Intermittent pleating device of sewing machine

Abstract

The intermittent pleating device comprises a machine head, the machine head is provided with a driving shaft, the driving shaft is in transmission connection with a transmission mechanism, the transmission mechanism is in transmission connection with a transmission shaft, the transmission shaft is connected with a pleating mechanism, the transmission mechanism is in transmission connection with a power mechanism, and the power mechanism lifts the transmission mechanism; a driving shaft of the transmission mechanism is connected with the eccentric wheel, the eccentric wheel is connected with the first connecting rod, the first connecting rod is connected with the second connecting rod through a pin shaft screw, and the second connecting rod is connected with the transmission shaft through the transmission shaft crank; the end, away from the second connecting rod, of the closing mechanism is connected with the machine head. The machine head is rotationally connected with one end of a lever, the other end of the lever corresponds to the transmission mechanism, and the lever is connected with the power mechanism; by the adoption of the structure, the structure is applied to pleating of the clothes fabric, closing and separating operation of the transmission mechanism is convenient and fast, and the pleating mechanism is suitable for pleating of the clothes fabric.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing machine equipment, and in particular relates to an intermittent pleating device of a sewing machine. Background Art

[0002] The existing pleating machines cannot control the random switching between pleating and non-pleating, and cannot solve the problems of thread derailment and pleat removal at the start and end of sewing of thick materials. Summary of the invention

[0003] The purpose of the present invention is to provide an intermittent pleating device for a sewing machine, aiming to solve the problems pointed out in the background technology that the existing pleating machines cannot control the arbitrary switching between pleating and non-pleating, and cannot solve the problems of thread derailment and pleating at the beginning and end of sewing of thick materials.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] An intermittent pleating device for a sewing machine comprises a machine head, the machine head is provided with a driving shaft, the driving shaft is connected to a transmission mechanism, the transmission mechanism is connected to a transmission shaft, the transmission shaft is connected to a pleating mechanism, the transmission mechanism is connected to a power mechanism, and the power mechanism is used to lift the transmission mechanism;

[0006] The transmission mechanism comprises an eccentric wheel, a first connecting rod, a second connecting rod, a pin screw and a transmission shaft crank, wherein the drive shaft is connected to the eccentric wheel, the eccentric wheel is connected to the first connecting rod, the first connecting rod is connected to the second connecting rod via a pin screw, and the second connecting rod is connected to the transmission shaft via the transmission shaft crank;

[0007] One end of the second connecting rod is connected to the closing mechanism, and the closing mechanism is connected to the machine head away from the second connecting rod end;

[0008] The machine head is rotatably connected to one end of a lever, the other end of the lever corresponds to a transmission mechanism, and the lever is connected to the power mechanism.

[0009] Furthermore, the machine head is provided with a limiting plate, and the limiting plate corresponds to the second connecting rod.

[0010] Furthermore, the first connecting rod and the second connecting rod are located at one end of the pin screw, the other end of the pin screw corresponds to the transmission shaft crank, and the pin screw is located below the transmission shaft crank.

[0011] Furthermore, the closing mechanism includes a tension spring and a bracket, one end of the bracket is connected to the machine head, the other end of the bracket is connected to one end of the tension spring, and the other end of the tension spring is connected to the second connecting rod.

[0012] Furthermore, the power mechanism includes an electromagnet, a suction plate, a spring sheet and a traction wire, the electromagnet is connected to the machine head, the electromagnet is slidably connected to the suction plate, a spring sheet is provided between the electromagnet and the suction plate, the spring sheet is connected to the electromagnet, the suction plate is connected to one end of the traction wire away from the electromagnet, and the other end of the traction wire is connected to the second connecting rod.

[0013] Furthermore, there are a plurality of spring sheets, and each of the spring sheets is arranged at intervals along the circumference of the electromagnet.

[0014] Furthermore, the power mechanism also includes a guide block, which is connected to the machine head and is provided with a guide hole, which is adapted to the traction wire.

[0015] Furthermore, the pleating mechanism includes a feeding connector and a feeding shovel blade, one end of the feeding connector is connected to the transmission shaft, and the other end of the feeding connector is connected to the feeding shovel blade.

[0016] Furthermore, the feeding connection piece is in a flat "V" shape, and is provided with a plurality of through holes, each of which is arranged at intervals along the surface of the feeding connection piece; the angle of the feeding connection piece is arranged in an arc shape.

[0017] Furthermore, one end of the feeding shovel blade is rotatably connected to the feeding connecting piece, and a clamping bolt is provided between the feeding shovel blade and the feeding connecting piece. When the clamping bolt is in a clamping state, the feeding shovel blade is fixedly connected to the feeding connecting piece, and a serrated groove is provided at the free end of the feeding shovel blade, and the serrated groove is adapted to the machine needle.

[0018] Due to the adoption of the above structure, the present invention has the following technical advances compared with the prior art:

[0019] (1) The machine head of the present invention is provided with a driving shaft, which swings left and right. The driving shaft is connected to the transmission mechanism, and the transmission mechanism is connected to the transmission shaft. When the transmission mechanism is closed, the driving shaft swings left and right to drive the transmission shaft to swing left and right; when the transmission mechanism is lifted, the driving shaft swings left and right, and the transmission shaft does not swing left and right; the transmission shaft is connected to the pleating mechanism, and when the transmission shaft swings left and right, the pleating mechanism moves back and forth to pleat the material; when the transmission shaft does not swing left and right, the pleating mechanism does not move back and forth and the material does not pleat; the transmission mechanism is connected to the power mechanism, and the power mechanism is used to lift the transmission mechanism; the structure is applied to the pleating of clothing fabrics, which solves the problem pointed out in the background technology that the existing pleating mechanism cannot control the arbitrary switching between pleating and non-pleating, and cannot solve the problems of thread derailment and pleating at the beginning and end of sewing of thick materials;

[0020] (2) The transmission mechanism of the present invention includes an eccentric wheel, a first connecting rod, a second connecting rod, a pin screw and a transmission shaft crank, the driving shaft is connected to the eccentric wheel, the eccentric wheel is connected to the first connecting rod, the first connecting rod is connected to the second connecting rod through the pin screw, and the second connecting rod is connected to the transmission shaft through the transmission shaft crank; one end of the second connecting rod is connected to the closing mechanism, the closing mechanism is connected to the machine head away from the second connecting rod end, the machine head rotates and connects one end of the lever, the other end of the lever corresponds to the transmission mechanism, the lever is connected to the power mechanism, and the setting of the power mechanism and the closing mechanism makes the closing and lifting operations of the transmission mechanism convenient and quick, and realizes the arbitrary switching between pleating and non-pleating.

[0021] In summary, the present invention adopts the above-mentioned structure, so that the structure is applied to the pleating of clothing fabrics, and makes the closing and separation operations of the transmission mechanism convenient and quick, realizes the arbitrary switching between pleating and non-pleating, and solves the problems of the start and end of sewing of thick materials, and the de-threading and de-pleating, and is suitable for the pleating of clothing fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the machine head, the drive shaft, the transmission mechanism, the closing mechanism, the transmission shaft and the limit plate according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the first connecting rod, the second connecting rod, the pin screw, the transmission shaft crank, the traction wire, the guide block and the closing mechanism of the embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the machine head, electromagnet, suction piece, spring piece and traction wire according to an embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of a pleating mechanism according to an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of a lever according to an embodiment of the present invention.

[0030] Labeled parts: 1-machine head, 2-driving shaft, 3-transmission mechanism, 301-transmission shaft crank, 302-eccentric wheel, 303-first connecting rod, 304-second connecting rod, 4-transmission shaft, 5-pleating mechanism, 501-feeding connector, 502-feeding shovel, 503-through hole, 504-tightening bolt, 6-power mechanism, 601-electromagnet, 602-suction piece, 603-spring, 604-traction wire, 605-guide block, 7-closing mechanism, 701-tension spring, 702-bracket, 8-limiting piece, 9-pin screw, 10-lever. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] Embodiment: An intermittent pleating device for a sewing machine

[0033] This embodiment discloses an intermittent pleating device for a sewing machine, such as Figure 1 , Figure 2 , Figure 6As shown, it includes a machine head 1, the sewing machine model is 0303D, the machine head 1 is provided with a driving shaft 2, the power mechanism of the driving shaft 2 is the original driving mode of the sewing machine, the specification only describes the improved structure, and does not describe the parts of the sewing machine that have not been modified, the driving shaft 2 is connected to the transmission mechanism 3, the transmission mechanism 3 is connected to the transmission shaft 4, the transmission shaft 4 is the original structure of the sewing machine, the present invention changes the driving mode of the transmission shaft 4 through the transmission mechanism 3, the transmission shaft 4 is connected to the pleating mechanism 5, the transmission mechanism 3 is closed, the driving shaft 2 swings left and right, and the transmission shaft 4 swings left and right to drive the pleating mechanism 5 to swing back and forth to pleat the material, which is used for pleating clothing fabrics. Pleats, the transmission mechanism 3 is connected to the power mechanism 6, and the power mechanism 6 is used to lift the transmission mechanism 3. When the transmission mechanism 3 is lifted and the drive shaft 2 swings left and right, the transmission shaft 4 does not swing left and right, and the pleating mechanism 5 does not move forward and backward. The material is not pleated, which solves the problem that the existing pleating mechanism pointed out in the background technology cannot control the random switching between pleating and non-pleating, and the sewing start and end of thick materials, the problem of de-line and de-pleating cannot be solved. The present invention provides a transmission structure using a computer synchronous sewing machine, adds very few parts, and forms an intermittent pleating device, which solves the problem that the existing pleating machine cannot control the random switching between pleating and non-pleating, and the sewing start and end of thick materials, the problem of de-line and de-pleating cannot be solved. In particular, the details of the actual application of sewing boxing gloves, such as convenient turning, the stability of thick materials, the problem of de-pleating at the beginning and end, etc. This structure can also be applied to the pleating of thin materials, but the noise becomes louder when the improved pleating device pleats thin materials; the transmission mechanism 3 includes an eccentric wheel 302, a first connecting rod 303, a second connecting rod 304, a pin screw 9 and a transmission shaft crank 301, the eccentric wheel 302 is connected to the drive shaft 2, the eccentric wheel 302 is connected to one end of the first connecting rod 303, the other end of the first connecting rod 303 is rotatably connected to the second connecting rod 304 through the pin screw 9, and the second connecting rod 304 is connected to the transmission shaft 4 through the transmission shaft crank 301; one end of the second connecting rod 304 is connected to the closing mechanism 7, the closing mechanism 7 is connected to the machine head 1 away from the end of the second connecting rod 304, the closing mechanism 7 closes the transmission mechanism 3, and when the transmission mechanism 3 is closed, the drive shaft 2 swings left and right, and the transmission shaft 4 swings, and the swing of the transmission shaft 4 drives the pleating mechanism 5 to swing back and forth, and the pleating mechanism 5 swings back and forth to pleat the material.The machine head 1 rotates to connect one end of the lever 10, and the other end of the lever 10 corresponds to the transmission mechanism 3. The lever 10 is connected to the power mechanism 6 through a locking piece. The lever 10 is in the shape of a knife. When the handle end corresponds to the transmission mechanism 3, the pin screw 9 is lifted, and the knife head end is connected to the machine head 1 through the rotating shaft. The closing of the closing mechanism 7 and the lifting of the power mechanism 6 can both be manually operated. The closing of the closing mechanism 7 and the lifting of the power mechanism 6 can also be controlled by a controller. The number of needles at the start and end of 0-9 needles without pleating can be set by the controller. The closing of the closing mechanism 7 and the lifting of the power mechanism 6 can also be operated in a combination of manual and controller. This setting makes the closing and lifting of the transmission mechanism 3 convenient and quick, and realizes the arbitrary switching between pleating and non-pleating; this setting is convenient when pleating the material, and the 0-9 needles at the start and end are not pleated, and the 0-9 needles can be adjusted as needed. This operation can avoid the pleating part from being off-line and pleated, causing The pleating fails, which improves the qualified rate of the product and solves the problems of thread de-threading and pleating at the beginning and end of sewing of clothing fabrics; when pleating is not needed in the middle of pleating, the transmission mechanism 3 needs to be lifted manually to avoid pleating of the material; during operation, first, the operator places the material between the pleating mechanism 5 and the machine surface of the sewing machine, and then the power mechanism 6 lifts the transmission mechanism 3, and the material is not pleated, and then the closing mechanism 7 puts the transmission mechanism 3 in a closed state, and the drive shaft 2 swings left and right through the transmission mechanism 3 to drive the transmission shaft 4 to swing left and right, and the transmission shaft 4 swings left and right to drive the pleating mechanism 5 to swing back and forth to pleat the material, and finally, the power mechanism 6 lifts the transmission mechanism 3, and the material is not pleated, and the pleating of the material is completed; therefore, the advantage of this embodiment is that the above-mentioned setting is adopted for pleating clothing fabrics, and the closing and separation operations of the transmission mechanism are convenient and quick, so as to realize the arbitrary switching between pleating and non-pleating, and solve the problems of thread de-threading and pleating at the beginning and end of sewing of thick materials.

[0034] like Figure 1 , Figure 2 , Figure 3 As shown, the machine head 1 is connected to the limit plate 8 by a screw, the limit plate 8 corresponds to the second connecting rod 304, the limit plate 8 is an elastic plate, and the setting of the elastic plate can reduce the impact force between the transmission mechanism 3 and the limit plate 8. The setting of the limit plate 8 prevents the transmission mechanism 3 from tilting too much during movement, thereby improving the stability of the movement of the transmission mechanism 3.

[0035] like Figure 1 , Figure 2 , Figure 3As shown, the first connecting rod 303 and the second connecting rod 304 are located at one end of the pin screw 9, and the other end of the pin screw 9 corresponds to the second connecting member 304. The pin screw 9 is located below the transmission shaft crank 301. The pin screw 9 abuts against the second connecting member 304 to play a limiting role, thereby preventing the transmission mechanism 3 from tilting too much downward during movement, thereby improving the stability of the movement of the transmission mechanism 3.

[0036] like Figure 1 , Figure 2 , Figure 3 As shown, the closing mechanism 7 includes a tension spring 701 and a bracket 702, one end of the bracket 702 is connected to the machine head 1 by a screw, the other end of the bracket 702 is connected to one end of the tension spring 701, the other end of the tension spring 701 is connected to the second connecting rod 304, the bracket 702 is arranged in an arc shape, the main body of the arc-shaped bracket 702 is connected to the machine head 1 by a screw, one end of the bracket 702 is connected to the tension spring 701, and the other end of the bracket 702 corresponds to the second connecting rod 304, which can prevent the transmission mechanism 3 from warping up too much during the movement, thereby improving the movement stability of the transmission mechanism 3, and the arc-shaped bracket 702 and the limit plate 8 are arranged together. The body is formed to reduce the number of spare parts. This arrangement has a simple structure and low cost. When the power mechanism 6 applies force to the transmission mechanism 3 to make the transmission mechanism 3 in a lifted state, the stretch spring 701 is stretched and in a force storage state. When the power mechanism 6 does not apply force to the transmission mechanism 3, the stretch spring 701 is reset under the action of its own characteristics. The stretch spring 701 is reset to close the transmission mechanism 3. The stretch spring 701 resets the first connecting rod 303 and the second connecting rod 304. The pin screw 9 contacts the transmission shaft crank 301 to form a bottom dead point. The first connecting rod 303 and the second connecting rod 304 form a straight line. The pleating mechanism 5 pleats the material.

[0037] like Figure 1 , Figure 3 , Figure 4 , Figure 6As shown, the power mechanism 6 includes an electromagnet 601, a suction piece 602, a spring piece 603 and a traction wire 604. The electromagnet 601 is connected to the machine head 1 by screws. The electromagnet 601 is a reverse sewing electromagnet of the machine itself. The electromagnet 601 is slidably connected to the suction piece 602. A spring piece 603 is arranged between the electromagnet 601 and the suction piece 602. The spring piece 603 is connected to the electromagnet 601 by screws. There are multiple spring pieces 603, and the multiple spring pieces 603 are arranged at intervals along the circumference of the electromagnet 601. The spring pieces 603 can make The suction piece 602 is away from the electromagnet 601. The end of the suction piece 602 away from the electromagnet 601 is fixedly connected to one end of the traction wire 604 by welding. The other end of the traction wire 604 is fixedly connected to the lever 10 by a clip. The traction wire 604 is a steel wire. The outer surface of the steel wire is covered with a protective layer. The steel wire has no extensibility. The electromagnet 601 absorbs the suction piece 602, and the suction piece 602 moves toward the end of the electromagnet 601. The suction piece 602 moves to pull the traction wire 604 to make one end of the lever 10 rotate along the machine head 1. The lever 1 0 moves so that the pin screw 9 at the connection between the first connecting rod 303 and the second connecting rod 304 is lifted, the pleating mechanism 5 does not work and the material is not pleated, and the transmission mechanism 3 is lifted to stretch the tension spring 701 to store force; after the electromagnet 601 is turned off, the tension spring 702 at the other end of the second connecting rod 304 is reset to reset the first connecting rod 303 and the second connecting rod 304, the pin screw 9 contacts the transmission shaft crank 301 to form a bottom dead point position, the first connecting rod 303 and the second connecting rod 304 are closed, and the pleating mechanism 5 makes the material pleated; this arrangement makes it convenient and quick to lift the transmission mechanism 3, realizes the arbitrary switching between pleating and non-pleating, and makes full use of the control system of the machine to realize the control of the pleated transmission mechanism 3; the power mechanism 6 also includes a guide block 605, the guide block 605 is connected to the machine head 1 by screws, the guide block 605 is provided with a guide hole through the machine tool, the guide hole is adapted to the traction wire 604, the setting of the guide block 605 plays a guiding role, avoids lateral pulling, and improves the pulling stability of the power mechanism 6.

[0038] like Figure 1 , Figure 5As shown, the pleating mechanism 5 includes a feeding connector 501 and a feeding shovel 502. One end of the feeding connector 501 is connected to the transmission shaft 4 by a bolt, and the other end of the feeding connector 501 is connected to the feeding shovel 502. The feeding connector 501 is in a flat "V" shape, and the angle of the "V"-shaped feeding connector 501 is set in an arc shape. This setting increases the stability of the "V"-shaped feeding connector 501 during movement. The "V"-shaped feeding connector 501 whose angle is not set in an arc shape is easy to shake during movement and has poor stability; the feeding connector 501 is provided with a plurality of through holes 503 through the machine tool, and the plurality of through holes 503 are arranged at intervals along the surface of the feeding connector 501. The setting of hole 503 reduces the weight of the feeding connector 501; one end of the feeding shovel blade 502 is rotatably connected to the feeding connector 501, and a tightening bolt 504 is provided between the feeding shovel blade 502 and the feeding connector 501. When the tightening bolt 504 is in a tightening state, the feeding shovel blade 502 is fixedly connected to the feeding connector 501. This setting facilitates the adjustment of the angle of the free end of the feeding shovel blade 502 relative to the machine surface of the sewing machine; the free end of the feeding shovel blade 502 is provided with a plurality of serrated grooves through the machine tool, and the plurality of serrated grooves are spaced apart along the width direction of the feeding shovel blade 502, and the serrated grooves are adapted to the machine needle. This pleating mechanism 5 improves the stability of the feeding shovel blade 502 and increases the service life of the pleating mechanism.

[0039] The working principle of the embodiment of the present invention is as follows:

[0040] During operation, first, the operator sets the number of non-pleating stitches on the sewing machine control panel and places the material between the pleating mechanism 5 and the machine surface of the sewing machine. Then, the electromagnet 601 absorbs the suction sheet 602, and the suction sheet 602 drives the traction wire 604 to pull the lever 10. One end of the lever 10 rotates along the machine head 1, and the other end of the lever 10 lifts the pin screw 9 at the connection between the first connecting rod 303 and the second connecting rod 304. The pleating mechanism 5 does not work, and the material is not pleated. Then, the electromagnet 601 is disconnected. Open, the suction piece 602 leaves the electromagnet 601 under the action of the spring 603, and at the same time, the tension spring 701 resets the first connecting rod 303 and the second connecting rod 304, the pin screw 9 contacts the transmission shaft crank 301 to form a bottom dead point position, the first connecting rod 303 and the second connecting rod 304 form a straight line, and the material is pleated. Finally, the electromagnet 601 absorbs the suction piece 602, the lever 10 lifts the pin screw 9, the pleating mechanism 5 does not work, the material is not pleated, and the pleating of the material is completed.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An intermittent pleating device for a sewing machine, comprising a machine head (1), wherein the machine head (1) is provided with a driving shaft (2), characterized in that: The driving shaft (2) is connected to the transmission mechanism (3) in a transmission manner, the transmission mechanism (3) is connected to the transmission shaft (4), the transmission shaft (4) is connected to the pleating mechanism (5), the transmission mechanism (3) is connected to the power mechanism (6), and the power mechanism (6) is used to lift the transmission mechanism (3); The transmission mechanism (3) comprises an eccentric wheel (302), a first connecting rod (303), a second connecting rod (304), a pin screw (9) and a transmission shaft crank (301); the drive shaft (2) is connected to the eccentric wheel (302), the eccentric wheel (302) is connected to the first connecting rod (303), the first connecting rod (303) is connected to the second connecting rod (304) via the pin screw (9), and the second connecting rod (304) is connected to the transmission shaft (4) via the transmission shaft crank (301); One end of the second connecting rod (304) is connected to the closing mechanism (7), and the end of the closing mechanism (7) away from the second connecting rod (304) is connected to the machine head (1); The machine head (1) is rotatably connected to one end of a lever (10), the other end of the lever (10) corresponds to the transmission mechanism (3), and the lever (10) is connected to the power mechanism (6).

2. The intermittent pleating device for a sewing machine according to claim 1, characterized in that: The machine head (1) is provided with a limiting plate (8), and the limiting plate (8) corresponds to the second connecting rod (304).

3. The intermittent pleating device for a sewing machine according to claim 1, characterized in that: The first connecting rod (303) and the second connecting rod (304) are located at one end of the pin screw (9), the other end of the pin screw (9) corresponds to the transmission shaft crank (301), and the pin screw (9) is located below the transmission shaft crank (301).

4. The intermittent pleating device for a sewing machine according to claim 1, characterized in that: The closing mechanism (7) comprises a tension spring (701) and a bracket (702), one end of the bracket (72) is connected to the machine head (1), the other end of the bracket (702) is connected to one end of the tension spring (701), and the other end of the tension spring (701) is connected to the second connecting rod (304).

5. The intermittent pleating device for a sewing machine according to claim 1, characterized in that: The power mechanism (6) comprises an electromagnet (601), a suction piece (602), a spring piece (603) and a traction wire (604); the electromagnet (601) is connected to the machine head (1); the electromagnet (601) is slidably connected to the suction piece (602); a spring piece (603) is provided between the electromagnet (601) and the suction piece (602); the spring piece (603) is connected to the electromagnet (601); the end of the suction piece (602) away from the electromagnet (601) is connected to one end of the traction wire (604); and the other end of the traction wire (604) is connected to the second connecting rod (304).

6. The intermittent pleating device for a sewing machine according to claim 5, characterized in that: There are a plurality of spring sheets (603), and each of the spring sheets (603) is arranged at intervals along the circumference of the electromagnet (601).

7. The intermittent pleating device for a sewing machine according to claim 6, characterized in that: The power mechanism (6) further comprises a guide block (605), wherein the guide block (605) is connected to the machine head (1), and the guide block (605) is provided with a guide hole, wherein the guide hole is adapted to the traction wire (604).

8. The intermittent pleating device for a sewing machine according to claim 1, characterized in that: The pleating mechanism (5) comprises a feeding connection piece (501) and a feeding shovel piece (502), one end of the feeding connection piece (501) is connected to the transmission shaft (4), and the other end of the feeding connection piece (501) is connected to the feeding shovel piece (502).

9. The intermittent pleating device for a sewing machine according to claim 8, characterized in that: The feeding connection piece (501) is in a flat "V" shape, and is provided with a plurality of through holes (503). The through holes (503) are arranged at intervals along the surface of the feeding connection piece (501); the included angle of the feeding connection piece (501) is arranged in an arc shape.

10. The intermittent pleating device for a sewing machine according to claim 9, characterized in that: One end of the feeding shovel blade (502) is rotatably connected to the feeding connecting piece (501), and a tightening bolt (504) is provided between the feeding shovel blade (502) and the feeding connecting piece (501). When the tightening bolt (504) is in a tightening state, the feeding shovel blade (502) is fixedly connected to the feeding connecting piece (501), and a serrated groove is provided at the free end of the feeding shovel blade (502), and the serrated groove is adapted to the machine needle.

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