The method of processing sewing thread and device for its implementation

 

(57) Abstract:

Usage: in the garment industry for processing sewing thread during sewing. The inventive method includes the following stages: wrap the thread from the reel, the surface treatment thread beads of thermoplastic material during the rotation of the cone-shaped rotating the vessel around the thread, passing the thread through the guide nodes sewing machine, hit the thread in the seam. Devices implement the proposed method, receiving motion from the main shaft, the rotating cone capacity around the threads. The invention improves the surface quality of the threads in the processing of thermoplastic polymeric material, reduces the complexity and power consumption of the method increases productivity by reducing breakage of the thread. 3 S. and 3 C. p. F.-ly, 3 ill. 2 table.

The invention relates to the textile and apparel industries textile industry and can be used for processing cotton, viscose staple, Mylar and other threads, used in the manufacture of garments of both regular and special purpose shoes, skin and fancy goods.

In modern sewing machines is its length without thickening and fluffiness. General loss of strength from abrasion of the yarn during the formation of the Shuttle stitches is 12-40% , and when the movement of the reciprocating through the eye of a needle thread loses 20-40% strength and 20% of the friction of the fabric and details of the machine. In the presence of bulges along the length of the thread occur hooks the leg for the eye of the needle, and breakdown occurs. In those cases, when breakage does not occur, on the borders of thickening thread damped, and this leads to a decrease in strength of the thread connections. The speed of the thread is functionally connected with the revolutions of the main shaft of the machine, and it is therefore advisable processes stihopisaniya and processing sewing thread to connect.

Used in industry processing method sewing thread based on the use of organosilicon compounds [1] , in which a spool of sewing thread impregnated at room temperature in a water bath containing the dispersion 6-20 wt. % organosilicon compounds, dried up to 25-70 wt. the % content of impregnating substances and finally dried to remove adsorbed moisture.

The disadvantage of this method is that the solution based on organosilicon compounds does not provide stabilization of the geometrical parameters for DL the major obstacles in the form of thickenings with the passage of the thread through the nodes of the sewing machine, what is the cause of breakage of the needle thread during execution of stachelhaus-obmetochnye operations.

Known methods of processing sewing thread based on the use of hydrophobic, including organosilicon compounds [2] , when the thread after impregnation technological solution and spinning up to 80-85% humidity is subjected to two-way contact heat, "heat stroke". Such a process operation intensifies the process of wetting and impregnation, i.e., contributes to the transfer of non-volatile reagents from the surface to the center line and each fiber separately, but exacerbates the geometry of the threads increases thickening, existing, due flatten when pressed.

The disadvantage of these methods is that the individual fibers committed after impregnation and drying, on the one hand when passing through the eye of a needle form part of the non-volatile reagents on the surface, on the other hand contribute to the increased breakage due to the geometric increase swelling in the plane of spin. Although this treatment 25-30% less breakage sewing thread when sewing, still the stabilization of geometrical parameters along the length of sewing thread may be what the action scene is that thread, wound with packing, impregnated under tension technological solution, wring out, and before drying effect flow circular air jet directed opposite to the motion of the thread at an angle of 40-50aboutto its axis with a speed of 2 to 16 m/s

The drawback of this method is that the air flow acting on the perimeter surface macroalgae thread, provides adhesion single, loosely held fibers along the generatrix line, thereby creating separate zones on the convexity of plies of thread thickenings that form natural barriers with the passage of the thread through the eye of a needle. In addition, processed technological solution thread throughout the thickness has a high rigidity, and is located on the surface of the cured thermosetting resin is an obstacle to the eye of a sewing needle, and in places thickening practical break place. The method does not stabilize the geometry does not provide the elasticity of the thread, does not create the possibility of combining the process of sewing and processing. The disadvantages include the fact that in the process of stihopisaniya created unwanted selection, which can affect the bodies of dtci cotton sewing thread [4] , namely, that thread is processed technological solution under tension, hydrodynamic rotating flow solution, wrung out and dried. Combining the rotation of the solution and the direction of twist, achieve a more uniform thickness throughout the length of sewing thread. But this thread is inherent in almost all the disadvantages of the previous method, namely increased stiffness, lack of alignment, i.e., the processing thread and use it immediately in the process of stihopisaniya, air pollution in the area of sewing because of the presence of unreacted thermosetting resin.

A common disadvantage of all the methods is that they provide furnish thread and not in conjunction with the process of sewing, and separately, in addition, all systems use liquid processing, which is not always appropriate technological characteristics, because the full impregnation of the thread makes it hard, malolactic.

A device for processing sewing thread [1] , containing smatyvai site, guide rollers, tension device, spring-loaded napraviti to ensure contact of the yarn with the surface of the ring, winding the node.

It is also known a device for the mi shafts, counter-heated cylinders, the drying chamber with natural or forced convection and wind-node.

The disadvantage of the considered devices is that the design of the devices do not allow to achieve a high surface quality sewing thread, since the thread after impregnation and subsequent spin is directed into the camera with convective drying, which captures consisting of the surface of the yarn after spinning. Usually broken geometry of the thread, single fiber, which lagged behind the "trunk" of the thread on the previous technological transitions are recorded, but due to the film-forming polymer, deposited on the surface, become a natural barrier by passing it through the nodes of the sewing machine and primarily through the eye of a needle.

The closest to the technical nature of the claimed device is selected as a prototype device for processing cotton sewing thread [4] , containing smatyvai site, guide rollers, tension regulator, impregnating bath tanks communicating and magnetic stirrer is used to form a rotating hydrodynamic flow and impregnation of the threads technological preparation, sushi, what is that device implements a two-stage processing, because there is a device for the treatment of thread and a sewing machine that implements these threads. The disadvantage of the prototype is the difficulty of sealing sites impregnation of the thread. In addition, the thread being wound condition during storage, acquires increased stiffness due to the natural process of polymerization of the resin.

The aim of the invention is to improve the quality of the surface of the skin, reducing the complexity and intensity with short cycle times and simultaneous use in a sewing machine, as well as increase productivity by reducing breakage of the thread and the heating temperature of the needle.

In the proposed device the thread after winder runs through the center of the cone-shaped rotating the vessel in the form of a funnel, where due to centripetal and centrifugal forces of the rotating balls is subjected to mechanical and physico-chemical effects, leading to lubricate its surface and the sticking of the fibers due to the adhesion of the drug.

Rotating balls that put the impact of the thread, this is a technological product, including paraffin, SCTN brand And the product 22-N, bee wax,stuydy in the direction of the angle of twist of the thread, provides oiling of the surface of the yarn, and putting behind the "trunk" of the thread fibers between its plies and sticking them due to adhesion of the drug, smooth knots and the removal of loosely held fibers, which ensures alignment of the threads along its entire length, reducing the frictional characteristics between the thread and the stitching material, reducing the temperature of the needle tip and, consequently, increase the length of the seam seamless transfer.

A device for processing sewing thread, containing cone-shaped rotating tank in the form of a funnel, case, bearing, cover, bevel gear mounted on the sleeve sewing machine. The operation of the device is directly connected with the movement of the main shaft of the sewing machine.

The orientation of the fibers in the direction of the recesses between the plies of the yarn is determined by the relationship between the speed of movement of the yarn along the cone-shaped rotating the vessel in the form of a funnel VLW.nand speed of this vessel VBP. VLW.n= 0.2 m/c tg36o= 0,7265 Vminthe threads= VLW.n.tg36o= 0,1453 m/c

Vcontainer= = 986,67 with-1< / BR>
W =

n = 154 min-1< / BR>
Calculation of gear ratio gear or re the sleeve sewing machine can significantly reduce energy consumption in the processing of sewing thread. In addition, no additional production space for pre-treatment sewing thread.

The essence of the method lies in the fact that the proposed odnotsiklovoy processing, comprising the following stages: wrap the thread from the reel, the surface treatment thread beads of thermoplastic material during the rotation of the cone-shaped rotating the vessel around the threads of the mechanical and physico-chemical methods, the origin of the threads on the guide nodes sewing machine, hit the thread in the seam. The proposed method can improve the surface quality of the threads in the processing of thermoplastic polymeric material, reduce the complexity and power consumption of the way through odnotsiklovoy processing threads, to increase productivity by reducing breakage of the thread, i.e., to increase the length of seamless transfer suture (PL. 1) and the heating temperature of the needle by lowering the frictional characteristics of the threads on the surface of the eye of a needle.

The distinction of the proposed technical solutions existing in the art is that in the processing method applied mechanical-physical-chemical treatment revolving around the threads of the drug located in the highly elastic state, the process of the thread is made cone-shaped rotating tank in the form of a funnel, filled polymer beads special composition comprising the polymer of vegetable oil, and bevel gear, linking the movement of the main shaft of the machine with a conical rotating capacity installed directly on the sleeve sewing machine. Thus, the claimed technical solution to meet the criterion of "novelty."

After processing, sewing thread and technological preparation during the rotation capacity with this drug around the threads of the mechanical and physico-chemical methods to determine their physico-mechanical properties, which are compared to physical-mechanical properties of sewing threads, processed industrial technology and technology prototype.

Assessment of physico-mechanical properties hold as gastropanel methods and specially designed in accordance with the recommendations of the various instructions.

Clearly indicate the improved condition of the front surface and the reduction of the instantaneous loads encountered when passing knots through the guides of the machine, a needle and stitched materials, waveform capture the state of the front surface of the thread.

Mathematical analysis of the results obtained on the and quality indicators obtained in the laboratory sewing thread, processed by the proposed technology, were industrial tests were conducted, which showed that the breakage of the yarn treated according to the proposed technology, decreased by operations such as joining the lateral sections cuffs and turning of the collar 2 and 2.5 times, respectively.

In Fig. 1 and 2 shows a diagram of a method of processing sewing thread and device for its implementation; Fig. 3 (a, b, C) node for processing threads in a rotating conical receptacle in the form of a funnel.

The device (Fig. 1) implements a scheme to transmit the movement of the V-belt transmission and represents in statics the following elements: thread 1, statehouse from the reel (Fig. 1 not shown), the thread guide 2, hole 3, the top cover 4, a cone-shaped rotating tank 5 in the form of a funnel, the gear 6, the pulley 7, the belt 8, the pulley 9, the axis of splenetically 10, the gear that is in the machine casing (Fig. 1 not shown), the platform 11, the controller 12 of the tension plate 13 and the gear 14.

Presents the device in Fig. 1 operates as follows.

Thread 1, sativas from the reel (Fig. 1 not shown), through the thread guide 2 is sent into the hole 3 of the top cover 4 cone-shaped rotating eat what falls on one axis of splenetically 10 with the gear, in the case of the machine (Fig. 1 is not shown). Cone-shaped rotating tank 5 in the form of a funnel and the thread guide 2 is mounted on the platform 11, and the pulley 7 and the controller 12 of the belt 8 are mounted on the plate 13.

The device has a mild stroke and does not create a strong dynamic loads on the main shaft of the machine, but are more difficult to manufacture.

The second device implements a scheme to transmit motion through two gears, one of which is installed on the main shaft of the machine, and represents in statics the following elements: thread 1, statehouse from the reel (Fig. 2 is not shown), the thread guide 2, hole 3, the top cover 4, a cone-shaped rotating tank 5 in the form of a funnel, the slot of the bearing 15, the support plate 16, the bevel gear 17, the bevel gear 18, the main shaft 19 of the machine.

Presents the device in Fig. 2 operates as follows.

Thread 1, sativas from the reel (Fig. 2 is not shown), through the thread guide 2 is sent into the hole 3 of the top cover 4 cone-shaped rotating tank 5 in the form of a funnel which receives the rotation of a bevel gear transmission, bevel gear 17, the bevel gear 18, the main shaft 19 of the machine. the spruce 2 are mounted on a support plate 16.

This device is compact, dematerialism, it is easy to manufacture.

The speed of the rotating conical receptacle in the form of a funnel designed in such a way that the drug is in the tank and having the form of balls, acts in the direction of the angle of twist of the thread, ensuring smooth behind the "trunk" of the thread fibers and sticking them due to adhesion of the drug, smoothes nodules, clears subsecretaria fiber, and also gives the thread an additional twist that improves its front surface and increases the strength.

P R I m e R implementing the method.

The method was tested both in laboratory and industrial conditions in the cotton thread series "Extra" linear density of 50 Tex (trade room 40), right twist (GOST 6309-80).

The processing sequence of thread on the method comprises the following process steps:

winding yarn from bobbins;

processing threads technological preparation during the rotation capacity with this drug around the threads (mechanical-physical-chemical methods);

the passage of the thread through the guide nodes sewing machine;

hit the thread in the seam.

The application developed with the regional prototype provides the receiving thread with a lower coefficient of friction when in contact with the main bodies of the sewing machine, especially with the needle, due to the fact that the treated thread glides on technological transitions snap-in sewing machines, providing bezopasnosti seam.

The advantage of this method compared with the prototype is that the thread enters the seam immediately after treatment, with reduced friction during the passage of the thread through the material, it also reduces the loss of strength during repeated passage of the thread through the eye of the needle and the working elements of the machine and as a result reduces the breakage of the thread when sewing. And this ultimately leads to increased productivity by reducing preservat sewing machine thread by reducing its breakage. (56) 1. French patent N 2372268, class D 06 M 15/06, 1978.

2. The magazine "Clothing industry", 1981, N 2, c. 38.

3. USSR author's certificate N 1320297, class D 06 B 3/06, 1987.

4. USSR author's certificate N 1602904, class D 06 B 3/06, 1990.

THE METHOD OF PROCESSING SEWING THREAD AND DEVICE FOR ITS IMPLEMENTATION

1. The method of processing sewing thread, including winding, impregnation technological preparation and drying and then using the thread on the sewing machine by its passing through the nodes of the sewing machine, characterized in that coditel.net labor, the impregnated yarn is carried out directly by sewing on the sewing machine by contact of the thread with rotating beads of thermoplastic polymeric sizing drugs placed in conical containers, for forward and reverse motion of the machine.

2. The method according to p. 1, characterized in that the cone-shaped container rotates synchronously with the main shaft of the sewing machine in direct and return during the sewing threads.

3. A device for processing sewing thread, containing smatyvai node, the node of the tension thread, the capacity for technological preparation and the means for drying the skin, characterized in that, to reduce breakage of the thread and the temperature needle, improve the surface quality of the threads and productivity, capacity for technological preparation is installed on the sleeve sewing machine and has a tapered shape, wherein the drug is a balls with a thermoplastic polymer of a sizing coating, and the tank is mounted for rotation through a pair of bevel gears, one of which is connected to the main shaft of the sewing machine.

4. A device for processing sewing thread, containing smatyvai node, the node of the tension thread, emxt thread and temperature needles, improve surface quality threads and productivity, capacity for technological preparation is installed on the sleeve sewing machine and has a tapered shape, wherein the drug is a balls with a thermoplastic polymer of a sizing coating, and capacity through a pair of bevel gears and a belt drive connected to the main shaft of the sewing machine to its rotation.

5. The device according to PP. 3 and 4, characterized in that the diameter of the balls is 4 to 8 mm, and the conical part has a tilt angle of 40 - 70odepending on the speed of the main shaft of the sewing machine and the number of threads.

6. The device according to p. 4, characterized in that one of the pulleys of a belt mounted on the axis of splenetically sewing machine.

 

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