Sewing machine and methods of forming stitch with its use. RU patent 2508424.

FIELD: textiles, paper.

SUBSTANCE: sewing machine 1 comprising two needles comprises a platform 3, a rack 5, a console 6, a needle shaft 11 which is located on the front part of the console 6, two sewing needles 13, 14 which are attached to the needle shaft 11, two horizontal hooks 15 and 16 which grasp the corresponding loops of needle threads of two sewing needles 13, 14, and a moving member 21 which moves the sewn material 40 in a direction approximately orthogonal to the platform 3. In the sewing machine 1 comprising two needles the sewing needle 13 which is situated at the location more remote from the rack 5, is situated closer to the side of the displacement of the sewn material 40 than the sewing needle 14 which is located at the location closer to the rack 5.

EFFECT: improvement of strength of the convex curved part due to bringing the pairs of stitches closer to each other, when sewing the sewn product that contains a convex curved part.

3 cl, 28 dwg

The technical field

The present invention relates to the creation of containing two sewing machine needles, with the help of which two stitches are formed that can be stapled materials such as fabric, leather etc. at the expense of the reciprocating motion of two sewing needles, and to the creation of methods of formation of a stitch using containing two sewing machine needles.

Prerequisites for the creation of the invention

In accordance with the prior art, containing standard twin needle sewing machine contains the platform on which is placed a materials such as fabric, leather etc., rack serving up with one hand (right hand side) platform, console, which is located mainly parallel to the platform and runs from the top of the rack. Agulhas shaft, which makes reciprocating movement vertically with the help of a drive motor in the front part (in the left side of the console. Two sewing needle installed on neddle shaft. The platform contains two horizontal hooks that grab the loop needle thread two sewing needles, and the element of movement, moving materials such as fabric, leather etc. in the direction of mostly orthogonal to the platform.

The standard contains two needle sewing machine forms with the help of two sewing needles two located close to each other stitch. As shown in fig.26, two sewing needle 91 and 92 are located in the direction T move material is 30 with the set interval from each other, to receive durable stitch, and stitch 95A, formed with the help of a sewing needle 91, and stitch 96A, formed with the help of a sewing needle 92, entered into close contact with each other (see, for example, U.S. patent for useful model No. 52-10527 and U.S. patent No. 4456846).

Disclosure of the invention

The above contains two needle sewing machine leaps and bounds (periodically) delivers the link material 30 at the front using the move, but the sewing occurs when the link material 30 press by two hands. In containing the twin needle sewing machine when the link material 30 linearly stitch in the direction of T move, formed two stitches 95A and 96A, located close to each other, as shown in fig.26, but when link material 30 riddled with a turn of direction of T move an item to move, in accordance with its shape, formed two stitches 95 and 96V, separated from each other, as shown in fig.27. Thus, when containing twin needle sewing machine sews link material around 30 material 30, rotatable from the direction of T move an item to move, then a pair of sewing needles 91 and 92 in the direction of approximately orthogonal to the direction of the P5 sewing, separated from each other, and the result is a couple stitches 95 and 96V, separated from each other. Thus, the standard contains the twin needle sewing machine, the problem arises in the case of a curved work performed by the needle, as the width of the couple stitches increases, leading to loss of strength sewing, owing to the location of the couple stitches close to each other.

As shown in fig.28 when the link material 40, having convex sections 46 and 48, riddled with standard containing two sewing machine needles, on the line sections 41 and 45 formed a couple stitches 95A and 96A, located close to each other, but in curved parts of 42 and 44 of the convex sections 46 and 48 formed a couple stitches 95 and 96V, which are separated from each other. Link material 40 usually takes the form of his pocket and inserted the other filling materials, so the forces applied to the convex sections 46 and 48, is large, so you have more durable binding on curved parts of 42 and 44, than linear sections 41 and 45. However, when the curved part 42 and 44 stitch using the above containing two sewing machine needles, as the stitches 95 and 96V separated from each other, seam strength decreases and a couple stitches 95 and 96V can easily tear, resulting in a fall filling materials. Thus, using a standard containing two sewing machine needles when stitch link material 40, having convex sections 46 and 48, the width of the stitch 95 and 96V, which flashed the periphery of the convex sections 46 and 48, becomes wider, resulting in reduced strength of the weld. Thus, there is a problem with low durability material. In particular, when sew a piece of leather for car seats are required for a solid and reliable seam, with good appearance, however, since there are several curved plots have a couple stitches will be separated from each other and durability of a seam is lost. The force applied to the piece of leather for car seats, far more than the applied to the normal panel, resulting in a couple stitches breaks or diverges. When this gets out part of the filling of the pillows from , resulting in lost appearance.

The objective of the present invention is to eliminate the above problems, namely, the object of the present invention is to create containing two sewing machine needles and methods of formation of a stitch using containing two sewing machine needles, which allow to increase durability of a seam by placing a pair of stitches closer to each other when require high strength convex curves parts, for example, material in the form of pocket.

To solve the problem, offered containing twin needle sewing machine, which contains: platform which is placed link material; rack serving up with one side of the platform; the console, which is located mainly parallel to the platform and runs from the top of the rack; and Agulhas shaft provided in the front of the console, which makes reciprocating movement vertically with the help of the electric motor drive; two sewing needles, installed on the neddle shaft; two horizontal hook provided on the platform, which capture the matching loops needle thread two sewing needles; the element of movement, which moves the material link in the direction, approximately orthogonal to the platform; and sewing needles are located on both sides in the direction of approximately orthogonal to the direction of movement material, sewing needle, which is in a location that is more remote from the stand will be located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front.

To solve the problem, it is also proposed the method of forming stitches at the aid containing two sewing machine needles, which contains: platform which is placed link material; rack serving up with one side of the platform; the console, which is located mainly parallel to the platform and runs from the top of the rack; the Agulhas shaft provided in the front of the console, which makes reciprocating movement vertically with the help of the electric motor drive; two sewing needles, installed on the neddle shaft; two horizontal hook provided on the platform, which capture the matching loops needle thread two sewing needles; the element of movement, which moves the material link in the direction, approximately orthogonal to the platform, and sewing needles are located on both sides in the direction of approximately orthogonal to the direction of movement material, sewing needle, which is in a location that is more remote from the stand will be located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front, this method includes the following operations: the formation of a couple of stitches, with a total width of the stitch with a pair of sewing needles, due to the supply material in the direction of move an item to move, and the formation of a couple of stitches, with the width of the stitch is less than the total width of the stitch with a pair of sewing needles, due to the supply material in the direction of more remote from the front than the direction to move the item move.

To solve the problem, it is also proposed the method of forming stitches at the aid containing two sewing machine needles, which contains: a platform, on which is placed link material; rack serving up with one side of the platform; the console, which is the main a way parallel to the platform and runs from the top of the rack; the Agulhas shaft provided in the front of the console, which makes reciprocating movement vertically with the help of the electric motor drive; two sewing needles, installed on the neddle shaft; two horizontal hook provided on the platform, which capture the matching loops needle thread two sewing needles; the element of movement, which moves the material link in the direction of approximately orthogonal to the platform, and sewing needles are located on both sides in the direction of approximately orthogonal to the direction of movement material, sewing needle, which is in a location that is more remote from the stand will be located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front, this method includes the following operations: the formation of a couple of stitches, with a total width of the stitch with a pair of sewing needles, due to the supply material in the direction of move an item to move, and the formation of a couple of stitches, with the width of the stitch is less than the width of the stitch on the periphery of convex plot with a pair of sewing needles, due to the supply material in the direction of more remote from the front than the direction to move the item move

In containing the twin needle sewing machine and in the process of forming stitches at the aid containing two sewing machine needles in accordance with the present invention, as link material, such as cloth, leather etc., is placed on a platform, so that the periphery material facing the reception, the flash can be smoothly carried out without contact material to the reception. In containing the twin needle sewing machine and in the process of forming stitches at the aid containing two sewing machine needles in accordance with the present invention, when the result of the action contains the twin needle sewing machine, then Agulhas shaft moves vertically, and loops needle thread formed when a pair of sewing needles returned after penetration through link material captured by the pointed ends of the horizontal hooks to produce work that is performed by a needle, an element of movement abruptly moves link material in the direction of movement, to form a couple of stitches. In containing the twin needle sewing machine and in the process of forming stitches at the aid containing two sewing machine needles in accordance with the present invention, as sewing needle, which is in a location that is more remote from the stand will be located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front, when the link move material mainly parallel to the direction of travel, a couple stitches with a total width of the stitch is formed in material, but when the link material turn in the direction, more remote from the rack, than direction of travel, the gap between a pair of sewing needles in the direction of approximately orthogonal direction sewing, narrowed, resulting in a couple stitches closely overlaps with each other, so that the width of the stitch will tend to zero. Thus, containing two needle sewing machine and in the process of forming stitches at the aid containing two sewing machine needles in accordance with the present invention a couple stitches will be located close to each other when performing a curved work performed needle, resulting in increased strength stitch. Thus, containing two needle sewing machine and in the process of forming stitches at the aid containing two sewing machine needles in accordance with the present invention, when stitch material in the form of pocket strength can be increased through the placement of stitches close to each other on convex curves areas requiring enhanced durability.

Brief description of drawings

Figure 1 shows a General view in the long term, the full variant of implementation contains two sewing machine needles in accordance with the present invention.

Figure 2 shows the explanatory scheme of the primary components containing two sewing machine needles, shown in figure 1.

Figure 3 shows an explanatory diagram illustrating the General method of forming stitches at the aid containing two sewing machine needles, shown in figure 1.

Figure 4 shows an explanatory diagram illustrating the method of formation of oblique stitch using containing two sewing machine needles, shown in figure 1.

Figure 5 shows an explanatory diagram illustrating the method of formation of oblique stitch using containing two sewing machine needles, shown in figure 1.

Figure 6 shows an explanatory diagram explaining the way of formation of oblique stitch using containing two sewing machine needles, shown in figure 1.

Figure 7 shows the explanatory scheme material that sew using containing two sewing machine needles, shown in figure 1.

On Fig.8 shows a perspective view material that sew using containing two sewing machine needles, shown in figure 1.

Figure 9 shows the explanatory scheme of the state in which link the material shown in Fig.7, overturn.

Figure 10 shows the explanatory scheme of the primary components of material shown in figure 9, where (a) the incision line (b) - section along the line b-b, and (C) the section on the C-C.

Figure 11 shows a perspective view, full first sequence of sewing using containing two sewing machine needles, shown in figure 1.

On fig.12 shows a perspective view, full second sequence sewing using containing two sewing machine needles, shown in figure 1.

On fig.13 shows a perspective view, full third sequence sewing using containing two sewing machine needles, shown in figure 1.

On figure 14 shows a perspective view, full fourth sequence sewing using containing two sewing machine needles, shown in figure 1.

On fig.15 shows a perspective view, full fifth sequence sewing using containing two sewing machine needles, shown in figure 1.

On fig.16 shows a perspective view, full sixth sequence sewing using containing two sewing machine needles, shown in figure 1.

On fig.17 shows a perspective view, full detailed example material.

On fig.18 shows a cut on the d-d primary components shown in fig.17.

On fig.23 shows an explanatory diagram illustrating the method of formation of oblique stitch using containing two sewing machine needles shown in fig.19.

On fig.24 shows an explanatory diagram illustrating the method of formation of oblique stitch using containing two sewing machine needles shown in fig.19.

On fig.25 shows the explanatory scheme material which sew using containing two sewing machine needles shown in fig.19.

On fig.26 shows an explanatory diagram illustrating the General method of formation stitch using a standard containing two sewing machine needles.

On fig.27 shows an explanatory diagram illustrating the method of formation of oblique stitch using a standard containing two sewing machine needles.

On fig.28 shows the explanatory scheme material that sew using a standard containing two sewing machine needles.

Detailed description of the invention

Containing twin needle sewing machine 1 contains platform 3, on which is placed materials, rack 5, protruding up with one hand (right side) platform 3, console 6, which is located mainly parallel to the platform 3 and goes from the top of the rack 5, Agulhas shaft 11 envisaged in front of the console 6, which makes reciprocating movement vertically with the help of the driving motor, two sewing needle 13 and 14, installed on the neddle shaft 11, two horizontal hook 15 and 16 provided on platform 3, which capture the matching loops needle thread two sewing needles 13 and 14, and item 21 moving, moving materials in the direction of the main way orthogonal to the direction of the platform 3, as shown in figure 1. In containing the twin needle sewing machine 1, sewing needles 13 and 14 are located on both sides in the direction of approximately orthogonal to the direction of T move materials that can be stapled, and sewing needle 13, which is in a location that is more remote from the rack 5 will be located closer to the side of the displacement material than sewing needle 14 which is in the location located near by tram 5.

In the process of forming stitches at the aid containing two sewing machine needles 1 link material 30 moved in the direction of T move an item 21 of movement, resulting in a couple stitches 31A and 32A, with a total width of the D1 stitch, is formed by using a pair of sewing needles 13 and 14, as shown in figure 3. Further, as is shown in Fig.6, link material 30 moved in the direction of more remote from the rack 5 in the direction of T move an item 21 of movement, resulting in a couple stitches 31D and 32D, having width D4 stitch that is less than the total width of the D1 stitch, is formed by using a pair of sewing needles 13 and 14.

The above method of forming stitches at the aid containing two sewing machine needles 1 is a way of formation of a stitch on the periphery material 40 in the form of a pocket that contains the convex sections 46 and 48, and link the material 40 move in a direction to move the item 21 of movement, resulting in a couple stitches 31A and 32A, with a total width of the D1 stitch, is formed by using a pair of sewing needles 13 and 14, as shown in figure 7 and 8. Next, link the material 40 move in the direction of more remote from the rack 5 in the direction of T move an item 21 of movement, resulting in a couple stitches 31D and 32D, having width D4 stitch that is less than the total width of the D1 stitch, formed on the peripheries of the convex sections 46 and 48 pair of sewing needles 13 and 14.

In containing the twin needle sewing machine 1, as the link material 40 placed on platform 3 so that the periphery (the right line section 41) material 40, such as cloth, leather etc., facing the front 5, as shown in figure 11, the link material 40 can be smoothly flashed without contact with the stand 5. When containing twin needle sewing machine 1 actuate, Agulhas shaft 11 moves vertically, and loops needle thread formed when a pair of sewing needles 13 and 14 is returned after penetration through link material 40, captured by the pointed ends of the horizontal hooks 15 and 16 to to fix a stitch, item 21 moving abruptly moves link material 40 in the direction of T move to form a couple of stitches 31 and 32. In containing the twin needle sewing machine 1 sewing needle 13, which is in a location that is more remote from the rack 5 will be located closer to the side of the displacement material 40 than sewing needle 14 which is in the location located near by tram 5, so that when the link material 40 move mainly parallel to the direction of T move, a couple stitches 31A and 32A, with a total width of the D1 stitch, formed on material 40, as shown in fig.12. Further, as is shown in fig.13 when the link material 40 turn in the direction (left direction L), more remote from the rack 5 in the direction of T move, the gap between a pair of sewing needles 13 and 14 in the direction of approximately orthogonal to the direction of R sewing, narrowed, resulting in a couple stitches 31D and 32D closely overlaps with each other, so that the width of the stitch will tend to zero. Thus, containing two needle sewing machine 1, a couple stitches 31 and 32 is to be located close to each other in the course of a curved work performed needle, resulting in increased strength stitch. Thus, containing two needle sewing machine 1, when stitch link material 40 in the form of pocket, with convex sections 46 and 48, strength enhanced by the location of the stitches close to each other on convex curves parts of 42 and 44, require high strength.

Further details about containing the twin needle sewing machine in accordance with the present invention. As shown in figure 1, building 2 contains two sewing machine needles 1 contains platform 3, on which is placed materials such as fabric, leather etc., rack 5, protruding up with one hand (right hand side) platform 3, and console 6, which is located mainly parallel to the platform 3 and goes from the top of the rack 5.

Agulhas Val 11, which makes reciprocating movement vertically by using the drive motor (not shown)is foreseen in the front (left side) console 6. Support element 12 needles containing two sewing needle 13 and 14, fixed at the lower end of the needle shaft 11. In addition, two horizontal hook 15 and 16, which rotate synchronously with reciprocating needle shaft 11, are provided on the platform 3. Horizontal hook 16, which is located on the one hand (right hand side), configured to capture loop needle thread a sewing needle 14, and the horizontal hook 15, which is on the other side (left side) is configured to capture loop needle thread a sewing needle 13.

In addition, declining item 21 of movement, located between horizontal hooks 15 and 16, is provided on the platform 3. Declining item 21 move moves the reciprocating needle shaft 11 and configured for spasmodic movements that can be stapled materials such as fabric, leather etc. in the direction (front side of T direction, as shown in figure 1), approximately orthogonal to the platform 3.

As shown in figure 3, contains the twin needle sewing machine 1, link material 30, such as cloth, leather etc., move in the direction of P1 sewing, mainly parallel to the direction of T move declining item 21 of movement, resulting in a couple stitches 31A and 32A, with a total width of the stitch D1, is formed by using a pair of sewing needles 13 and 14. As shown in figure 4, containing the twin needle sewing machine 1, link material 30 move with a left turn in the direction of P2 sewing (angle of about 5 degrees), more remote from the rack 5 in the direction of T move declining item 21 of movement, resulting in a gap between the sewing needles 13 and 14 in the direction of approximately orthogonal direction P2 sewing, further narrows to form a couple of stitches 31 and 32V, with the width of the stitch D2 less than the total width of the stitch D1, by using a pair of sewing needles 13 and 14.

As shown in figure 5, containing two needle sewing machine 1, link material 30 move with a left turn in the direction of P3 sewing (at an angle of about 10 degrees), more remote from the rack 5 in the direction of T move declining item 21 of movement, resulting in a gap between the sewing needles 13 and 14 in the direction of approximately orthogonal direction P3 sewing, further narrows to form a couple of stitches 31 and 32C, having width D3 stitch less than the total width of the D2 stitch with a pair of sewing needles 13 and 14. As shown in Fig.6, containing two needle sewing machine 1, link material 30 move with a left turn in the direction P4 sewing (at an angle of 15 degrees), more remote from the rack 5 in the direction of T move declining item 21 of movement, resulting in a gap between the sewing needles 13 and 14 in the direction of approximately orthogonal direction P4 sewing, further narrows a couple stitches 31D and 32D, having width D4 stitch less than the total width of the D3 stitch with a pair of sewing needles 13 and 14. Stitches 31D and 32D entered into close contact with each other and approximately overlap. Thus, containing two needle sewing machine 1, when the angle turn to the left material 30 increases, the width of the stitch is shrinking. In some cases, containing two needle sewing machine 1, when the angle turn to the left material 30 increases, left stitch 31 moves to the right side and right stitch 32 moves toward the left, but even in these cases, as a couple stitches 31 and 32 is situated close to each other, can be obtained durable bead.

Link material 40 in the form of pocket stitch using containing two sewing machine needles 1, as shown in figure 7 and 8. Link material 40 formed from the pair of panels 40A and 40V, such as fabric, leather and Cloth etc. 40A and 40V contain the right bump 46 and left a bump 48, which are curved, and the Central concave plot 47, which is curved. The cloth 40A and 40V contain right straight section 41 and left straight section 45, which are located mainly in parallel to each other, the right curved plot of 42, which goes from right straight-line section 41, is mainly convex semi-circle, left curvilinear section 44, which goes from the left straight-line section 45, is mainly convex semi-circle, and the Central curvilinear section 43, which is a continuation of the right of a curved plot 42 and of the left curvilinear plot 44, is mainly concave in a semicircle. Right bump 46 limited right curve 42, left a bump 48 limited to the left of the curve 44, and the Central concave plot 47 limited to a Central curve 43.

As shown in figure 11, flashing carried out with a help containing two sewing machine needles 1 primarily in parallel along the right straight 41 material 40, contains a couple of sheets (panels) 40A and 40V, overlapping each other. As shown in fig.12, containing two needle sewing machine 1, as the link material 40 moves in the direction of P1 sewing, roughly parallel to the direction of T move declining item 21 of travel, a couple stitches 31A and 32A, with a total width of the D1 stitch, is formed by using a pair of sewing needles 13 and 14. As shown in fig.13, containing two needle sewing machine 1 when flashing produce right along the curvilinear part 42, and as the link material 40 has a slope and it move in a direction (left direction L), more remote from the rack 5 in the direction of T move declining item 21 of travel, stitch width, formed by a pair of sewing needles 13 and 14, narrowed to almost zero and a couple stitches 31D and 32D mainly closely overlaps with each other.

As shown in figure 14, contains the twin needle sewing machine 1 when flashing the produce on the right side of the 42 along the Central curvilinear plot 43, and as the link material 40 has a slope and it move in a direction (right direction R) near by tram 5 in the direction of T move declining item 21 of movement, the gap between a couple of stitches 31E and 32 formed by using a pair of sewing needles 13 and 14, becomes equal to the width D5 stitch, which is greater than the total width of the D1 stitch. As shown in fig.15, containing two needle sewing machine 1 when flashing the produce on the left side of 44 along the Central curvilinear plot 43, and as the link material 40 has a slope and it move in a direction (left direction L), more remote from the rack 5 in the direction of T move declining item 21 of travel, a couple stitches 31D and 32D, educated with a pair of sewing needles 13 and 14, will be mainly closely overlap each other, as described here above. As shown in fig.16, containing two needle sewing machine 1 when flashing produce along the left straight-line section 45, and as the link material 40 has a slope and it move in a direction (right direction R) near by tram 5 in the direction of T move declining item 21 of movement, the gap between a couple of stitches 31A and 32A, educated with a pair of sewing needles 13 and 14, becomes equal to the total width of the D1 stitch (see Fig.7).

As shown in figure 7 and 8, in material 40, stitches 31D and 32D, which flashed the periphery of the right convex plot 46 and left convex plot 48 closely overlap, and the gap between the stitches 31E and 32, which permeates through the periphery of the Central concave area 47, is broader. In material 40 force applied to the convex sections 46 and 48, is large, but here seam strength is increased, because the stitches 31D and 32D closely overlap, so that the stitches 31D and 32D is hard to break. Thus, the link material 40 has a strong and durable bead. As material 40 force applied to the section 47, is small, then even the big width of the stitch 31E and 32 not a problem.

Link material 40 when carrying out the work performed by the needle, overturn, as shown in figures 9 and 10, and the stitches 31A-31E the stitch on the outer fringes of material 40, with stitches 32A-32 located inside material 40, and right straight section 41, right curvilinear section 42, Central curvilinear section 43, the left curvilinear section 44 and left straight section 45 angled inwards. As the stitches 31D and 32D on the right a stretch of 46 and left a stretch of 48 closely overlap, these areas will have a strong joints, which are difficult to stretch and hard to break, even if these sites are provided filling materials. Central concave plot 47 has a slightly smaller durability, than the right bump 46 and left a bump 47 since the stitches 31E and 32 separated from each other, but as the load applied to the Central section 47, not as big as applied to the right convex section 46 and to the left convex section 48, the Central concave plot 47 can have good durability. In addition, the right bump 46 and left a bump 48, right curvilinear section 42 and the left curvilinear section 44 turned inward, but as the stitches 31D and 32D overlap with each other, the value of the coup right curvilinear plot 42 and of the left curvilinear plot 44 is small so right curvilinear section 42 and the left curvilinear section 44 rarely become an obstacle during input of filling material, so that the material filling can to be entered in the immediate vicinity of stitches 31D and 32D.

A case in which a link is a piece of leather for a covering of the car seat, is described below, with reference to fig.17 and 18. Lining of 100 seat backrest formed the front sheet 101, side sheets and 102 102 and rear sheet 103, and just beneath the skin of a lining of 105 and passenger 106, for example, of etc. Front sheet 101 and side sheet 102 sew along a curvilinear trajectory, and as the stitches 107 and 108 closely overlapping the seam is durable. Rear sheet 103 and side sheet 102 sew on a straight-line trajectory, the stitches 107 and 108 are separated from each other. During the operation, a very large force is applied to a front sheet 101 to support the movement of the driver, but as peripherals front sheet hardened linear firmware, it is unlikely that a stitch stretched or bursts, so that strength will be guaranteed, and it is unlikely that opened out of the cushion 106, that is unsightly. As usually materials in the form of pocket form using curved seams, when used for firmware sewing machine 1, always formed a couple stitches, located close to each other, that allows to obtain a durable bead.

As shown in fig.19 containing twin needle sewing machine 61 contains platform 63, on which is placed a materials such as fabric, leather etc., stand 65 serving up with one hand (right hand side) platform 63, and console 66, which is mainly parallel to the platform 63 and goes from the top of the rack 65. Agulhas shaft 67, which makes reciprocating movement vertically by using the drive motor (not shown)is foreseen in the front (left part) console 66. Two sewing needle 71 and 72 are installed on the neddle shaft 67. Platform 63 contains two horizontal hook 73 and 74, which capture the matching loops needle thread two sewing needles 71 and 72, item 75 of movement, which moves the material link in the direction of approximately orthogonal to the platform 63.

Sewing needles 71 and 72 are separated by approximately 3 mm or more, taking into account the external diameter of the sewing needle and the location of the horizontal hook, with the position of one of the sewing needle 71 and position of other sewing needles 72 rejected (separated) from each other in order to specify the width of the stitch is about 0.3 mm Thus, the gap between the sewing needles 71 and 72 corresponds to that described here previously, however, the gap between the sewing needles 71 and 72 in the direction of approximately orthogonal direction P1 sewing (see fig.21)is reduced, resulting width of the stitch will .

In containing the twin needle sewing machine 61 item 75 move abruptly moves link material to the front side, however sewing produce so that link the material of the press by two hands, visually control the position of a sewing needle 71 and 72, to exclude thread breakage due to deviations of the provisions of the needle relative to the material. Sewing produce when checking the provisions on the left side, because the console 66 a right side around a sewing needle 71 and 72. Link stitch material straightforward not all the time, and sewing can be a curved trajectory in accordance with a predetermined shape. In the case of sewing on a curved trajectory, when the embroidery is carried out due to rotation material in the right direction (direction R), so the link material will be closer to the front 65, than direction T move an item 75 move, stitch is not visible due to the presence of the console, 66, resulting in the possible thread breakage etc. In addition, when the link material turn in the right direction (direction R), as the link material in contact with the stand 65, the operator difficult to implement planned sewing. Therefore, containing two needle sewing machine 61 when sewing produce a curved trajectory, then sewing carried out due to rotation material in the left direction (direction L)that link the material will be further removed from the rack 65, than direction T move an item 75 of the move.

As shown in fig.21, containing two needle sewing machine 61, as the link material 30 moves in the direction of P1 sewing, roughly parallel to the direction of T move an item 75 of travel, a couple stitches 81A and 82, with a total width of the dl stitch, is formed by using a pair of sewing needles 71 and 72. As shown in fig.22, containing two needle sewing machine 61, link material 30 moves from left turn in the direction of P2 sewing (angle of about 5 degrees), more remote from the front 65, than direction T move an item 75 move, causing the gap between the sewing needles 71 and 72 in the direction of approximately orthogonal direction P2 sewing, further expands a couple stitches 81 and 82B, having width d2 stitch more than the total width of the dl stitch with a pair of sewing needles 71 and 72.

As shown in fig.23, containing two needle sewing machine 61, link material 30 moves from left turn in the direction of P3 sewing (angle of about 10 degrees), more remote from the rack 5 in the direction of T move an item 75 move, causing the gap between the sewing needles 71 and 72 in the direction of approximately orthogonal direction P3 sewing, further expands a couple stitches 81S and 82, having width d3 stitch more than the total width of the d2 stitch with a pair of sewing needles 71 and 72. As shown in fig.24, containing two needle sewing machine 61, link material 30 moves from left turn in the direction P4 sewing (at an angle of 15 degrees), more remote from the rack 5 in the direction of T move an item 75 move, causing the gap between the sewing needles 71 and 72 in the direction of approximately orthogonal direction P4 sewing, further expands a couple stitches 81D and 82D, having width d4 stitch more than width d3 stitch with a pair of sewing needles 71 and 72. Similar to that described in containing the twin needle sewing machine 61, the greater the angle turn to the left material is 30, the greater the width of the stitch.

As shown in fig.25, the above link material 40 in the form of pocket stitch using containing two sewing machine needles 61. Sewing produce mainly in parallel along the right straight 41 material 40, with a couple of overlapping sheets of 40 and 40A connect seam each other by means of containing two sewing machine needles 61. In containing the twin needle sewing machine 61, as the link material 40 moves in the direction of P1 sewing, mainly parallel to the direction of T move an item 75 move, a couple stitches 81A and 82, with a total width of the dl stitch, is formed by using a pair of sewing needles 71 and 72. In containing the twin needle sewing machine 61 when sewing produce along the right curvilinear plot 42, and as the link material 40 has a slope and it move in a direction (left direction L), more remote from the front 65, than direction T move an item 75 move, the stitches are formed 81D and 82D, the width of the d4 stitch, formed by a pair of sewing needles 71 and 72, will be more than the total width of the d1 stitch.

In containing the twin needle sewing machine 61 when sewing make along the Central curvilinear plot 43 from the right curvilinear plot 42, and as the link material 40 has a slope and it move in a direction (right direction R), located closer to the front 65, than direction T move an item 75 of travel, width d5 stitch, formed by a pair of sewing needles 71 and 72, narrowed, resulting in stitches 81 and 82 that overlap. In containing the twin needle sewing machine 61 when sewing produce along the left curvilinear plot 44 from the Central curvilinear plot 43, and as the link material 40 has a slope and it move in a direction (left direction L), more remote from the front 65, than direction T move an item 75 move, the stitches are formed 81D and 82D, the width of the d4 stitch, formed by a pair of sewing needles 71 and 72, is expanding. In containing the twin needle sewing machine 61 when sewing produce along the left curvilinear plot 45 from the left curvilinear plot 44, and as the link material 40 has a slope and it move in a direction, located closer to the front 65, than direction T move an item 75 of travel, a couple stitches 81A and 82, with a total width of the dl stitch, is formed by using a pair of sewing needles 71 and 72.

In material width 40 d4 stitches 81D and 82D, which flashed the periphery of the convex sections 46 and 48, more width d5 stitches 81 and 82, which permeates through the periphery of the concave area 47 and that overlap. When the link material 40 filling, since the force applied to the convex sections 46 and 48, is a big gap between the stitches 81D and 82D stretched and durability of a seam is reduced, resulting in stitches 81D and 82D can be easily broken. Thus, containing two needle sewing machine 61 when stitch link material 40, having convex sections 46 and 48, width d4 stitches 81D and 82D, which flashed the periphery of the convex sections 46 and 48, expands, so that strength is low, and when they enter filling materials in the convex sections 46 and 48, the stitches 81D and 82D stretch easily and easily torn, so durability decreases. Similarly, containing two needle sewing machine 61, curved sections width of the stitch is expanding, resulting in reduced strength, unlike containing two sewing machine needles 1. Thus, it should be borne in mind that contains the twin needle sewing machine 61 does not have the preferred configuration. Therefore be preferable to the containing two needle sewing machine sewing needle, which is in a location remote from the stand was located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front.

Industrial applicability

The present invention can be used in containing the twin needle sewing machine, forming two stitch in material.

List tagging

D1 stitch Width

D2 stitch Width

D3 stitch Width

D4 stitch Width

D5 stitch Width

L Left direction

R Direction sewing

P1 Direction stitch

P2 Direction stitch

P3 Direction stitch

P4 Direction stitch

P5 Direction stitch

R Right direction

T the Direction of movement

1 Containing the twin needle sewing machine

building 2 sewing machine

3 Platform

5 Hour front

6 Console

11 Agulhas shaft

12 Support element needle

13 Sewing needle

14 Sewing needle

15 Horizontal hook

16 Horizontal hook

21 Falling element move

30 Link material

31 Stitch 31A-31E Stitch

32 Stitch

32A-32 Stitch

40 material Link

40A Canvas

40V Canvas

41 Right straight line segment

42 Right curved plot

43 Central curvilinear section

44 the Left curvilinear section

45 Left straight line segment

46 the Right is a bump

47 Central concave plot

48 the Left is a bump

61 Containing twin needle sewing machine

63 Platform

66 Console

67 Agulhas shaft

71 Sewing needle

72 Sewing needle

73 Horizontal hook

74 Horizontal hook

75 Item move

81 Stitch

81A-81 Stitch

82 Stitch

82-82 Stitch

91 Sewing needle

1. Sewing machine, which contains: a platform, on which is placed link material; rack serving up with one side of the platform; the console, which is located mainly parallel to the platform and runs from the top of the rack; the Agulhas shaft provided in the front of the console, which makes reciprocating movement vertically with the help of the electric motor drive; two sewing needles, installed on the neddle shaft; two horizontal hook provided on the platform, which capture the matching loops needle two sewing threads needles; the element of movement, which moves the material link in the direction of approximately orthogonal to the platform; and sewing needles are located on both sides in the direction of approximately orthogonal to the direction of movement material, sewing needle, which is in a location that is more remote from the front, located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front.

2. Method of formation stitch using a sewing machine, which contains: a platform, on which is placed link material; rack serving up with one side of the platform; the console, which is located mainly parallel to the platform and runs from the top of the rack; the Agulhas shaft provided in the front of the console, which makes reciprocating movement vertically with the help of the electric motor drive; two sewing needles, installed on the neddle shaft; two horizontal hook provided on the platform, which capture the matching loops needle thread two sewing needles; the element of movement, which moves the material link in the direction of approximately orthogonal to the platform, and sewing needles are located on both sides in the direction of approximately orthogonal to the direction of movement material, sewing needle, which is in a location that is more remote from the stand will be located closer to the side of the displacement material than sewing needle, which is in the location, located closer to the front, and the method includes the following operations: the formation of a couple of stitches, with a total width of the stitch with a pair of sewing needles, due to the supply material in the direction of move an item to move, and the formation of a couple of stitches, with the width of the stitch is less than the total width of the stitch with a pair of sewing needles, due to the supply material in the direction of more remote from the front than the direction to move the item move.

3. Method of formation of a stitch on the periphery material, having convex detail, using a sewing machine, which contains: a platform, on which is placed link material; rack serving up with one side of the platform; the console, which is located mainly parallel to the platform and comes from the top part of the stand; Agulhas shaft provided in the front of the console, which makes reciprocating movement vertically with the help of the electric motor drive; two sewing needles, installed on the neddle shaft; two horizontal hook provided on the platform, which capture the matching loops needle thread two sewing needles; the element of movement, which moves the material link in the direction of approximately orthogonal to the platform, sewing needles are located on both sides in the direction of approximately orthogonal to the direction of movement material and sewing needle, which is in a location that is more remote from the stand will be located closer to the side of the displacement material than sewing needle, which is in the location closest to the front of the method includes the following operations: the formation of a couple of stitches, with a total width of the stitch with a pair of sewing needles, due to the supply material in the direction of move an item to move, and the formation of a couple of stitches, with the width of the stitch is less than the total width of the stitch on the periphery of convex parcel using a pair of sewing needles, due to the supply material in the direction of more remote from the front than the direction to move the item move.