Zigzag sewing machine

FIELD: textile, paper.

SUBSTANCE: handle 27 of stitch selection, handle 11 of stitch length control, needle pusher 22, interacting with swinging cross beam 21, pusher 18 of cloth mover, interacting with three-arm yoke 67, lever 29 to change direction of cloth mover displacement are mounted onto a single block-frame of control, arranged in the form of two supports 43 with needle pusher axis 23 fixed in them, which also bears swinging cross beam 21, cloth mover pusher 18, three-arm yoke 67. At the same time in position prepared for alignment of sewing machine with block-frame of control, needle pusher 22, cloth mover pusher 18 interact in a contact manner accordingly with one of guide blocks in assembly of guide blocks 4 and cam 13 of smooth control of stitch length, and the third arm of three-arm yoke interacts in a contact manner with control crank 16. At the same time needle pusher axis 23 is equipped with mounting support ends protruding at both sides of supports 43, by means of which block-frame of control is mounted in supports 44 of machine frame.

EFFECT: simplified alignment of machine, simplified control in process of sewing.

2 cl, 7 dwg

 

The technical field to which the invention relates.

The invention relates to the garment industry, particularly to sewing machines full of zigzag, which in addition to straight and zigzag stitches can perform a number of decorative and special lines. A program for executing these lines laid in Cams (copiers), which is integrated into the machine and inform the needle together with the frame needle bar oscillating motion in the plane perpendicular to the direction of movement of the material.

The level of technology

Known sewing machine, containing kinematically connected to the main shaft mechanisms needle, zigzag and block copiers, thread takeup, dropship, engine tissue. The latter contains the means of smooth regulation of stitch length and the automatic regulation of the feed material, which is made in the form placed on the axis of the Cam, kinematically associated with the plunger within the contact with the spring loaded lever for regulating the stitch length and reverse flow of the fabric. Means smooth regulation of stitch length is made in the form of a disk with a curved groove, which includes a roller, a lever system connected to the lever rack (Avid. No. 1089188, D05 3/02).

On a separate detachable units mounted mechanisms of the needle bar, the thread take-up lever and presser La is key, the main shaft, the mechanisms dropship and engine tissue.

However, the mechanism of the zigzag is not a finished site, because it contains a compound cravings that you must connect to the machine casing. Moreover, the handle of the selection dial and handle regulation of stitch length are located on different blocks and also at different heights.

The above is the disadvantages of constructive solutions of the sewing machine.

Also known sewing machine (Avid. No. 1089189), containing mounted in the housing and kinematically connected to the main shaft by a toothed-belt transmission mechanisms of the needle bar, the thread take-up, dropship, zigzag unit, copiers, associated with the frame deviations of the needle bar and having a case of the zigzag mechanism, bearing in contact with one of the copiers, mounted on an axis, the plunger of the needle, and the handle of the selection dial mechanism of the engine of the fabric and the mechanism of motor control tissue. Last kinematically connected via the control crank and rocker with the engine tissue.

The machine also includes a device for changing the direction of movement of the motor tissue, the handle smooth regulation of stitch length, the axis of which is fixed a Cam software for engine control tissue and Cam smooth regulation of stitch length, and the handle of choice quickly is key, on the axis of which is fixed a drum drive pointer type lines. The latter by means of a flexible connection is associated with a pointer-type lines. Moreover, the type pointer lines installed movably relative to the scale carrier graphic lines.

The disadvantages of the known machines are as follows:

- the complexity of its construction, including due to the presence of two toothed-belt transmission, a flexible connection with the drum for pointer types lines;

the inconvenience of driving associated with the location of the control levers the machine: select the type of line management and promotion material. These arms are located at different levels, namely the first is located on the horizontal part of the sleeve of the machine, and the second in a zone close to the platform of the machine;

- arm belong to different blocks, and the fixing of their axes is made directly in the body of the machine, and with the subsequent mounting on one drive gear of the follower, the Cam changes the direction of movement of the motor tissue, drive index lines, and on the other of the Cam smooth regulation of stitch length.

The technical result of the invention is:

- address the above shortcomings by placing the mount on the same block-the block (module) arm selection dial and handle regulated the I length of stitch, pusher needle and pusher engine tissue, swinging beam and triplecheck rocker, lever changes the direction of movement of the engine tissue and Cam, interacting with him, drive pusher needle and drive pusher engine tissue, and also:

- quick and easy mounting block housing (module) in the body of the machine.

The invention

This technical result is ensured by the fact that in the sewing machine zigzag, containing mounted in the machine casing and kinematically connected to the main shaft mechanisms zigzag unit, copiers, needle bar, the thread take-up, rotary hook, engine tissue with the horizontal movement mechanism of the engine tissue and regulation of stitch length, including the handle, mounted on the axis regulation, and the Cam smooth regulation of stitch length is kinematically associated with the lever of the engine tissue and managing the crank shaft of the advancement mechanism of the engine tissue, pusher engine tissue mounted with a possibility of longitudinal movement, while the zigzag mechanism includes kinematically associated with the frame deflection the needle bar carrying a needle, and a swinging yoke in contact with one of the copiers in the block copiers pusher needle pivotally mounted on the axis of the plunger and the die-casting is the actuator longitudinal movement, includes rack-and-pinion transmission gear which is mounted on the axis of the arm selection dial the bearing of the Cam changes the direction of movement of the motor tissue, kinematically connected through a lever changes the direction of movement of the engine tissue and tripleone rocker mentioned managing the crank, and also contains the mechanism of the presser foot, and a pointer of the form of lines, according to the invention the handle of the selection dial, crank regulation of stitch length, needle pusher, interacting with the oscillating walking beam, pusher engine tissue interacting with threapleton the rocker lever changes the direction of movement of the engine of fabric mounted on a single block case management, designed as two poles with fixed in them the axis of the follower needle bearing while also swinging yoke, tappet engine tissue, tripleone arm, one leg fixed axis arm selection lines, and the second support fixed axis arm adjustment stitch length, with arms freely planted on the corresponding axis, and the hub freely planted holder with longitudinal grooves in which the hinge is mounted on the lever changes the direction of movement of the engine tissue, and he made two shoulders, one shoulder which interacts with the above-mentioned re the s ' Cam, and the second shoulder interacts with threapleton the rocker and Cam made in one piece with the hub arm selection dial and the needle pusher and pusher engine fabrics made triplicity, and the third on the shoulder of each of which is designed for longitudinal movement on the axis of the pusher needle, the actuator longitudinal movement of the pusher engine fabrics are identical to the drive of the pusher needle that includes a rack-and-pinion transmission gear which is mounted on the axis of the arm regulating the length of stitch, and Reiki both gear also mounted on the block body is in position, prepared to align the sewing machine unit-case management, needle pusher, pusher engine tissue interact contact respectively with one of the copiers in the block copiers, and Cam smooth regulation of stitch length, and the third shoulder triplezero beam interacts contact with the steering crank, the axis of the pusher needle provided with protruding on both sides of the bearings mounting the supporting ends, through which the block body control is mounted in the bearings of the machine housing made in the form of a wedge-shaped seats, partially protruding from them for fixing their patch plates with screws screwed into threaded holes in the housing mash the us, and the fixation unit housing management from turning about the axis of the pusher needle provided with a groove formed in each support, interacting with a corresponding protrusion in the machine casing, and a pointer of the line made in the form printed on the handle of the selection dial digital information and the scale carrier corresponding to the digital information on the hilt types of lines executed on the cover of the machine. And the fact that the handle of the selection dial and handle regulation of stitch length are located at the same level on the machine body.

Brief description of drawings

In figure 1 there is shown a sewing machine zigzag, General view;

figure 2 is a kinematic diagram;

figure 3 - block building in a disassembled state;

figure 4 - body of the sewing machine;

figure 5 - block-body, front view;

figure 6 - block building, view from above;

figure 7 - types of lines that are performed on the sewing machine.

The implementation of the invention

Sewing machine zigzag contains mounted in the housing 1 of the machine and kinematically connected to the main shaft 2 mechanisms zigzag 3 block copiers 4, the needle bar 5, the thread take-up lever 6, the hook 7, the engine tissue 8 with mechanism 9 horizontal movement of the engine tissue and the device 10 regulation of stitch length, including the handle 11 mounted on the axis 12 reg is the way, and the Cam 13 smooth regulation of stitch length, kinematically connected with the lever 14 of the engine tissue 15 and managing the crank shaft 16 advancing mechanism 17 8 engine tissue, pusher engine tissue 18, mounted with a possibility of longitudinal displacement. While the zigzag mechanism 3 includes kinematically associated with the frame 19 of the deviation of the needle bar carrying a needle bar 20, and a swinging yoke 21 in contact with one of the copiers 4.1 unit copiers 4 a plunger 22 of the needle pivotally mounted on the axis 23 of the pusher needle and provided with a drive 24 longitudinal movement, including rack-and-pinion transmission 25, the gear 25.1 which is mounted on the axis 26 of the handle select lines 27, the bearing of the Cam 28 changes the direction of movement of the motor tissue, kinematically connected through a lever 29 changes the direction of movement of the engine tissue and tripleone rocker 30 with the said managing crank 16. In addition, the machine includes mechanism presser foot 31 and the pointer 32 species lines. According to the invention the handle of the selection lines 27, grip regulate the stitch length dial 11, the plunger of the needle 22, interacting with bobble head plate 21, the pusher engine tissue 18, interacting with threapleton the rocker 30, the lever 29 changes the direction of movement of the engine tissue are mounted on a single block-cor is truncated management 33, made in the form of two bearings 34, 35 attached to them by the axis of the pusher needle 23, the carrier while also swinging yoke 21, the pusher engine tissue 18, tripleone rocker 30. One bearing 34 fixed axis 26 of the handle select lines 27, and the second support 35 is fixed axis 12 of the arm control the stitch length dial 11. These arms 27, 11 freely planted on the appropriate axis 26, 12 and the hub 36, 37 freely planted holder 38 with the longitudinal grooves 39, 40, on which is pivotally mounted a lever 29 changes the direction of movement of the engine tissue. And he made two shoulders, one shoulder 29.1 which communicates with the said Cam 28, and a second shoulder 29.2 interacts with threapleton the rocker 30. The Cam 28 is made in one piece with the hub 36 of the handle of the selection lines, and the plunger of the needle 22 and the pusher engine fabric 18 is made triplicity, and the third shoulder 22.3, 18.3 each of which is designed for longitudinal movement on the axis of the pusher needle 23. The actuator 41 longitudinal movement of the pusher engine fabric 18 is made identical to the actuator 24 of the pusher needle that includes a rack-and-pinion transmission 42, the gear 41.1 which is mounted on the axis of the arm 12 regulation of stitch length, and Reiki 25.2, 42.2 both gear also mounted on the block body 33. When in this position, prepared the ohms for the adjustment of the sewing machine with the block body control 33, the plunger of the needle 22, the pusher engine tissue 18 interact contact respectively with one of the copiers 4.1 unit copiers 4 and the Cam 13 smooth regulation of stitch length, and the third shoulder 30.3 triplezero rocker 30 interacts contact with the managing crank 16. Thus the axis of the pusher needle 23 is equipped with speakers on both sides of the bearings mounting the supporting ends 43, through which the block body control 33 is mounted in bearings 44 of the housing 1 of the machine, made in the form of a wedge-shaped seats, partially protruding from them for fixing their overhead plate 45 by screws 46 are screwed into threaded holes 47 in the housing 1 of the machine. And the fixation unit housing management 33 against rotation about the axis of the pusher needle 23 is secured by means of a groove 48 formed in each support, interacting with the corresponding protrusion 49 in the housing 1 of the machine.

The pointer type of the line 32 is made in the form printed on the handle of the selection lines 27 digital information and 27.1 scale 50, the carrier corresponding to the digital information 27.1 on the handle 27 types of lines 50.1 made on the cover 51 of the machine. Handle selection lines 27 and arm regulating the stitch length dial 11 are located on the same level on the base 1 of the machine.

Sewing machine zigzag works as follows.

Motor 52 through a timing belt 53, máchovo the wheel 54 and the clutch 55, the rotation is transmitted to the main shaft 2 and kinematically related mechanisms: zigzag 3, block copiers 4, the needle bar 5, the thread take-up lever 6, the hook 7, the engine tissue 8.

For simple zigzag lines with different values for the width shown on the scale 50 species lines (figure 5), the unit of the copier 4 contains a number of copiers 4.1, 4.2, 4.3, 4.4, etc. (digital information on the scale 50 and the handle of the selection dial 27 "7", "8", "9", "10", "11"), providing these lines.

Straight stitch in the center of the groove in the needle plate 56 is depicted under the digital information is "5"and straight stitch offset to the left from the center of the groove shown under digital information "b".

Under the digital information"1", "2", "3", "4" on the scale 50 and the pointer 32 shows the details of the loop.

Under the digital information"12", "13", "14", "15", "16", "17" displayed decorative and target lines that can be run on the machine.

To get lines under the digital information from "5" to "17" and making a loop under the digital information"1", "2", "3", "4" the lever 27 to rotate in one direction or another, combining the digital information on the handle 27, the corresponding graphical image of the lines on the Chalet 50 index 32.1 on the cover 51. Easy and convenient.

For a full and clear view of obtaining any lines consider a mechanism for the needle bar 5, the associated mechanisms zigzag 3 and block copiers 4. M is the mechanism of the needle bar 5-bar slider-crank type. The reciprocating movement of the needle bar 20 with the needle 57 is provided through the crank 58, the rod 59 and the lead 60, fixed to the needle bar 20. The latter together with the needle makes the reciprocating movement in the guide frame deviations 19 of the needle, and when run on a sewing machine zigzag stitch is rejected together with the frame across the line of stitching. For this frame deviations 19, kinematically connected with the zigzag mechanism 3, provided with a horizontal arm 61 in contact with two shoulders lever 62, pivotally mounted on the main shaft 2, the receiving swinging movement of the swinging beam 21. In constant contact with the latter is the plunger of the needle 22.

The selection lines are provided as follows.

When turning the knobs select line 27 gear 25.1 moves the rake 25.2 finger 63, which one end is located in the groove 39 of the holder 38 and the other end into the groove of the third shoulder 22.3 pusher needle 22. The first shoulder 22.1 the last contact with the block copiers 4 (one of the copiers in the block copiers 4), and the second shoulder 22.2 contact with bobble head plate 21, kinematically connected with the frame of the deviation of the needle bar 19, and depending on which figure on the handle 27 will coincide with the pointer 32.1 (a vertical line on the lid 51), the sewing machine will meet the ü one of the types of lines, displayed on the scale 50.

To change the stitch length dial (step line) when sewing a straight stitch or zigzag stitch the handle of regulating the stitch length dial 11 is turned in one direction or another, combining digital information "0"to"5" on the handle with the pointer 11.1 on the cover 51 (vertical line). So, at the very right position of the arm 11 (POS."5") stitch length will be the maximum, and in the far left position (POS."0") stitch length almost equal to zero.

For a full understanding of changes in the length of stitch consider the mechanism 8 engine tissue and the device 10 regulation of stitch length. As is known, the mechanism 8 engine tissue consists of mechanism 9 horizontal movement of the engine fabric and mechanism for vertical movement of the engine tissue.

Horizontal movement of the engine of fabric 15 is provided through trehtsentrovye Cam 64 mounted on the main shaft 2, the plunger 65, the connecting link 66 and the control crank 16 spring triplezero lever 67, which rotational motion of the main shaft 2 is converted into oscillating motion of the crank shaft 68 and promotion 17, and with it the rocker arm 69 and lever engine tissue 14 with the engine tissue 15.

During the rotation of the arm 11 of the regulation of stitch length gear 42.1 moves the rack 42.2 finger 70 in the groove 40 of the tool holder 38. The village is olcu finger 70 is in the groove of the third shoulder 18.3 pusher engine tissue 18, the latter will be moved along the axis 23 of the pusher needle. The first shoulder 18.1 interacting with the Cam 13 smooth regulation of stitch length, passes through the second shoulder 18.2 pusher engine fabric 18, the swing treplace the rocker 30 on the axis 23 of the pusher needle 22, which will go up or down depending on the position of the pusher engine tissue 18.

At the rightmost position of the pusher engine tissue 18 stitch length is maximum, i.e. when tripleone the rocker 30 is rotated down, it turns managing the crank 16 triplezero lever 67. This will move the suspension point swivel connecting link 66 with the control crank 16 and will be located in the rightmost position as viewed from the front of the machine, or the same, closer to the operator. The plunger 65 receives the maximum oscillatory movement in a vertical plane, through which the kinematic connection is transmitted to the lever 14 of the engine tissue.

When the pusher engine fabric 18 is in its extreme left position, i.e. tripleone arm 30 is raised, the hinged connection of the connecting link 66 is coincident with the longitudinal axis of the plunger 65, the plunger 65 swinging about the hinge connection of the crank 68, the crank 68 remains stationary and promotion material p is essentially zero.

Vertical movement of the engine of fabric 15 is connected with the mechanism 7 Shuttle. Rotational movement of the main shaft 2 through the knee 70, the rod 71 and the crank 72 is converted into a swinging movement of the Shuttle shaft 73, which, in turn, through the conical toothed sector 74 and bevel gear 75 is rigidly fixed by the engine of the Shuttle 76 is converted into a swinging movement of the Shuttle 77 and attached to the engine of the Shuttle Cam 78 that communicates with the lever 14, is converted into its vertical movement together with the engine tissue 15.

The machine has prawojazdy Central bobbin oscillating Shuttle, swing axis which is perpendicular to the axis of the Shuttle shaft 73. Mechanism 6 of the thread take-up lever hinge-rod type.

During the rotation of the main shaft 2 the eye of the lever 79 of the thread take-up lever, pivotally linked through a connecting link 80 with the crank 58, moves along a closed curve, ensuring timely submission of the upper thread to the needle 57 and tightening the stitch in sewing.

The device changes the direction of movement of the motor tissue, including the Cam 28 and lever 29, as already mentioned in relation to the Cam and lever, mounted on a block body control.

It is mainly used for making loops for identical sewn whip left and right sides of the loop. It is enabled after serging the left side of the loop when performing pos.2 (7) by turning the knob 27. This left shoulder 29.1 lever 29 interacts with the Cam 28, and the right shoulder 29.2 lever interacting with the first shoulder 30.1 triplezero rocker 30, rotate it at a certain angle or in a certain position, wherein the third shoulder 30.3 out of the contact (contact) with a control crank 16 spring triplezero lever 67. So will turn the connecting link 66, and the point of suspension that is adjustable connection of the connecting link 66 and the control of the crank 16 will be located on the other side of the pusher 65, that is further from the operator. In this case, the movement of the plunger 65 will be communicated upwards and material (loop) will move in the opposite direction (to the operator). The stitch length specifies the Cam 28 in the range of 0.5-1 mm.

Before turning to the operation of the machine after the installation of the material under the presser foot 81 mechanism 31 of the presser foot, the presser foot is lowered to the material by means of the lever 82 of the manual lifting, interacting with holder 83, secured to the rod 84, the supporting leg 81.

To ensure material moving manually in the opposite direction is a spring-loaded arm 85 reverse flow, which is kinematically connected with the spring loaded threapleton lever 67, and hence the Manager of the crank 16.

On offer sewing machine can produce (the IC) as a normal flat products, and cylindrical products. Why the housing 1 of the machine is made with the free flight of the sleeve, i.e. it has a bag platform 86 and 87 attached, which allows you to convert it into a car with a flat platform. The console is equipped with a section 88 for storing sewing supplies. Secure attachment by means of spring latches 89.

From the front side to close the front of the machine (the mechanism of the needle, the thread take-up lever, presser foot serves as the front cover 90.

The proposed construction of the sewing machine makes it possible to simplify the set up and align, simplify maintenance, and ease of management by the location of the control levers at the same level.

1. Sewing machine zigzag, containing mounted in the machine casing and kinematically connected to the main shaft mechanisms zigzag unit, copiers, needle bar, the thread take-up, rotary hook, engine tissue with the horizontal movement mechanism of the engine tissue and regulation of stitch length, including the handle, mounted on the axis regulation, and the Cam smooth regulation of stitch length is kinematically associated with the lever of the engine tissue and managing the crank shaft of the advancement mechanism of the engine tissue, pusher engine tissue mounted with a possibility of longitudinal displacement, PR is the zigzag mechanism includes kinematically associated with the frame deviations of the needle bar, bearing needle bar, and swinging the yoke in contact with one of the copiers in the block copiers, needle pusher, pivotally mounted on the axis of the plunger and provided with a longitudinal displacement drive of the including rack-and-pinion transmission gear which is mounted on the axis of the arm selection dial the bearing of the Cam changes the direction of movement of the motor tissue, kinematically connected through a lever changes the direction of movement of the engine tissue and tripleone rocker mentioned managing the crank, and also contains the mechanism of the presser foot, and a pointer of the form of lines, characterized in that the handle of the selection dial, crank regulation of stitch length, needle pusher, interacting with swinging walking beam, pusher engine tissue interacting with threapleton the rocker lever changes the direction of movement of the engine tissue are mounted on a single block case management, designed as two poles with fixed them in the axis of the follower needle bearing while also swinging yoke, tappet engine tissue, tripleone arm, one leg fixed axis of the handle of the selection lines and the second support fixed axis arm adjustment stitch length, with arms freely planted on the corresponding axis, and the hub freely planted derganc the longitudinal grooves, where marnina mounted lever changes the direction of movement of the engine tissue, and he made two shoulders, one shoulder which cooperates with the said Cam, and a second shoulder interacts with threapleton the rocker and Cam made in one piece with the hub arm selection dial and the needle pusher and pusher engine fabrics made triplicity, and the third on the shoulder of each of which is designed for longitudinal movement on the axis of the pusher needle, the actuator longitudinal movement of the pusher engine fabrics are identical to the drive of the pusher needle that includes a rack-and-pinion transmission gear which is mounted on the axis of the arm regulation of stitch length, and Reiki both gear also mounted on the block body is in position, prepared to align the sewing machine with the block body control, needle pusher, pusher engine tissue interact contact respectively with one of the copiers in the block copiers and Cam smooth regulation of stitch length, and the third shoulder triplezero beam interacts contact with the steering crank, the axis of the pusher needle provided with protruding on both sides of the bearings mounting the supporting ends, through which the block body control is mounted in the bearings is of orpus machine, made in the form of a wedge-shaped seats, partially protruding from them for fixing their patch plates with screws screwed into threaded holes in the machine body, and the fixation unit housing management from turning about the axis of the pusher needle provided with a groove formed in each support, interacting with a corresponding protrusion in the machine casing, and a pointer of the line made in the form printed on the handle of the selection dial digital information and the scale carrier corresponding to the digital information on the hilt types of lines, made on the sewing machine cover.

2. Sewing machine zigzag according to claim 1, characterized in that the handle of the selection dial and handle regulation of stitch length are located at the same level on the machine body.



 

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