Pushing structure of flat seaming machine

Abstract

The utility model relates to the technical field of flat seaming vehicles, and discloses a pushing structure of a flat seaming vehicle, which comprises a driving shell, an inner shell is fixedly arranged in the driving shell, a disc is rotatably connected in the inner shell, a motor box is fixedly connected outside the driving shell, a motor is arranged in the motor box, and a push rod is arranged in the motor box. The disc is fixedly connected to the output end of the motor, an outer rod is fixedly connected to the edge of the exterior of the disc, the outer rod is sleeved with a first connecting rod, a second connecting rod is arranged at one end of the first connecting rod, rotating shafts are rotationally connected to the interiors of the first connecting rod and the second connecting rod, and an inner cylinder is fixedly connected to the bottom of the driving shell. Compared with the prior art, the needle pushing device has the advantages that through linkage of the first connecting rod and the second connecting rod, the needle is contracted inwards and expanded outwards in the inner cylinder, the purpose of pushing the needle is achieved, in the process, the needle does not need to bear pressure, and the service life of the needle is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of interlock sewing machines, in particular to a pushing structure of an interlock sewing machine. Background Art

[0002] A flat stitch sewing machine is an industrial sewing machine used to sew knitted garments that are worn next to the body. It uses a needle and a shuttle thread to form a single-sided covered chain stitch on the bottom of the sewing material, or adds a covering thread on the front of the sewing material to form a double-sided covered chain stitch. It is an industrial sewing machine that sews two or more layers of sewing material. The covering thread on the front mainly serves as an aesthetic decoration. The covering chain stitches sewed by the flat stitch sewing machine have greater elasticity, which can stretch as the garment is worn and recover after wearing. Therefore, it is suitable for sewing knitted garments that are worn next to the body.

[0003] However, when the existing interlock sewing machine needle is in use, the air pump is started and stopped to drive the needle to extend and retract inside the needle shell to achieve the purpose of pushing the needle. During this process, the air pump will generate great pressure when punching the needle, which will reduce the service life of the needle over time, so improvement is needed. Utility Model Content

[0004] The utility model aims to provide a pushing structure of a stretch sewing machine, which has the effect of increasing the service life of the needle.

[0005] The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: a pushing structure of a seaming machine, comprising a driving shell, an inner shell fixedly installed inside the driving shell, a disc rotatably connected inside the inner shell, a motor box fixedly connected outside the driving shell, a motor provided inside the motor box, the disc fixedly connected to the output end of the motor, an outer edge of the outer disc fixedly connected to an outer rod, a first connecting rod sleeved on the outer side of the outer rod, a second connecting rod provided at one end of the first connecting rod, the first and second connecting rods are both rotatably connected to a rotating shaft inside, the bottom of the driving shell is fixedly connected to an inner cylinder, the second connecting rod extends to the inside of the inner cylinder, a needle is fixedly installed on the bottom of the second connecting rod, the inside of the inner cylinder is fixedly connected to a pulley frame, and the inside of the pulley frame is rotatably connected to a pulley.

[0006] By adopting the above technical solution, during the process of extending and retracting the needle, the motor is started, so that the motor drives the disc to rotate wholeheartedly inside the inner shell, the outer rod is fixed at the edge of the outer side of the disc, and the first connecting rod is rotatably connected to the outside of the outer rod, so that the first connecting rod can swing in a circular form around the outer rod, and the first connecting rod is rotatably connected to the second connecting rod through the rotating shaft, and the second connecting rod is inserted into the interior of the inner cylinder and limited inside the inner cylinder. The first connecting rod swings, so that the first connecting rod and the second connecting rod are linked, and the second connecting rod will be extended and retracted inside the inner cylinder, and the needle is fixed at the bottom end of the second connecting rod. Through the linkage of the first connecting rod and the second connecting rod, the needle is retracted and expanded inside the inner cylinder, so as to achieve the purpose of pushing the needle, and in this process, the needle does not need to bear pressure, which greatly improves the service life of the needle.

[0007] The present invention is further configured as follows: the number of the pulleys is several, and the several pulleys are divided into two groups, and the pulleys in each group are symmetrical to each other.

[0008] By adopting the above technical solution, the second connecting rod contacts each set of pulleys, and friction is generated between the second connecting rod and the pulleys, causing the pulleys to rotate. The second connecting rod is limited by the pulleys to prevent the second connecting rod from deviating during the extension and retraction process.

[0009] The utility model is further configured as follows: a threading hole is provided inside the needle.

[0010] By adopting the above technical solution, the thread end is connected to the needle through the threading hole.

[0011] The present invention is further configured as follows: a column is overlapped on the bottom of the driving shell, a first bolt is connected to the internal thread of the column, and a cloth pressing block is provided on the bottom of the column.

[0012] By adopting the above technical solution, a groove adapted to the needle is opened inside the cloth pressing block, the needle extends into the inside of the cloth pressing block, the cloth pressing block contacts the cloth to prevent the cloth from shaking, and the needle improves the sewing quality during sewing.

[0013] The present invention is further configured as follows: an inner hole is opened inside the column, a spring is fixedly connected to the inner hole, and a top rod is fixedly connected to the bottom of the spring.

[0014] By adopting the above technical solution, when the cloth pressing block applies pressure to the cloth, the push rod drives the spring to contract, thereby achieving the effect of increasing the tensioning force, thereby improving the pressure quality on the cloth.

[0015] The present invention is further configured such that: both sides of the interior of the column are fixedly connected with slide rails, and the interior of the slide rails is slidably connected with a limit rod.

[0016] By adopting the above technical solution, one end of the limit rod is slidably connected to the inside of the slide rail, and the other end of the limit rod is fixedly connected to the push rod, thereby limiting the push rod and preventing the push rod from deflecting.

[0017] The present invention is further configured as follows: an anti-slip strip is fixedly connected to the bottom of the cloth pressing block, and anti-slip grooves are provided on the bottom of the anti-slip strip.

[0018] By adopting the above technical solution and setting the anti-skid strips and the anti-skid patterns, the effect of improving friction can be achieved.

[0019] The present invention is further configured as follows: mounting blocks are fixedly connected to both sides of the exterior of the drive housing, and the interior of the mounting blocks is threadedly connected to a second bolt.

[0020] By adopting the above technical solution, the mounting block and the second bolt can fix the drive housing in the head of the flat seam sewing machine.

[0021] The present invention is further configured as follows: the number of the second bolts is four, and the four second bolts are distributed in the form of a ring array.

[0022] By adopting the above technical solution, the number of the second bolts and the number of the mounting blocks are both four, and each second bolt is threadedly connected to the inside of each mounting block, thereby improving the fixing effect.

[0023] The present invention is further configured as follows: a groove is provided on the inner wall of the motor box, and sound insulation cotton is fixedly connected to the inside of the groove.

[0024] By adopting the above technical solution and providing the sound insulation cotton, the noise generated by the motor can be isolated inside the motor box, thereby reducing noise pollution.

[0025] The beneficial effects of the utility model are:

[0026] The outer ring is fixed at the edge of the outer ring, and the first connecting rod is rotated and connected to the outside of the outer rod, so that the first connecting rod can swing in a circumferential form around the outer rod, and the first connecting rod is rotatably connected to the second connecting rod through the rotating shaft, and the second connecting rod is inserted into the interior of the inner cylinder and limited in the interior of the inner cylinder. The first connecting rod swings, so that the first connecting rod and the second connecting rod are linked, and the second connecting rod will be extended and retracted inside the inner cylinder, and the needle is fixed at the bottom end of the second connecting rod. Through the linkage of the first connecting rod and the second connecting rod, the needle is retracted and expanded inside the inner cylinder, so as to achieve the purpose of pushing the needle, and in this process, the needle does not need to bear pressure, which greatly improves the service life of the needle.

[0027] 2. The utility model, through the arrangement among the cloth pressing block, the inner hole, the spring, the push rod, the slide rail and the limit rod, a groove adapted to the needle is opened inside the cloth pressing block, the needle extends into the inside of the cloth pressing block, the cloth pressing block contacts the cloth to prevent the cloth from shaking, and the needle improves the sewing quality when sewing. When the cloth pressing block applies pressure to the cloth, the push rod drives the spring to contract, thereby achieving the effect of increasing the tension force, thereby improving the pressure quality on the cloth. One end of the limit rod is slidably connected to the inside of the slide rail, and the other end of the limit rod is fixedly connected to the push rod, thereby being able to limit the push rod to prevent the push rod from deflecting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the structure of the utility model;

[0030] Figure 2 This is a side view of the internal structure of the drive housing of the utility model;

[0031] Figure 3 This is a schematic diagram of the front view of the internal structure of the drive housing of the utility model;

[0032] Figure 4 This is a schematic diagram of the internal structure of the column of the utility model.

[0033] In the figure, 1. drive housing; 2. inner housing; 3. disc; 4. motor box; 5. motor; 6. outer rod; 7. first connecting rod; 8. second connecting rod; 9. rotating shaft; 10. inner cylinder; 11. needle; 12. pulley frame; 13. pulley; 14. threading hole; 15. column; 16. second bolt; 17. first bolt; 18. cloth pressing block; 19. inner hole; 20. spring; 21. push rod; 22. slide rail; 23. limit rod; 24. anti-slip strip; 25. mounting block. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0035] Reference Figure 1-4A push structure of a flat sewing machine includes a drive shell 1, an inner shell 2 is fixedly installed inside the drive shell 1, a disc 3 is rotatably connected inside the inner shell 2, a motor box 4 is fixedly connected to the outside of the drive shell 1, a motor 5 is arranged inside the motor box 4, the disc 3 is fixedly connected to the output end of the motor 5, an outer edge of the outer disk 3 is fixedly connected to an outer rod 6, a first connecting rod 7 is sleeved on the outer side of the outer rod 6, a second connecting rod 8 is arranged at one end of the first connecting rod 7, and a rotating shaft 9 is rotatably connected to the inside of the first connecting rod 7 and the second connecting rod 8. The bottom of the drive shell 1 is fixedly connected to an inner cylinder 10, the second connecting rod 8 extends to the inside of the inner cylinder 10, a needle 11 is fixedly installed on the bottom of the second connecting rod 8, the inside of the inner cylinder 10 is fixedly connected to a pulley frame 12, and the inside of the pulley frame 12 The outer rod 6 is fixed at the edge of the outer surface of the disc 3, and the first connecting rod 7 is rotatably connected to the outside of the outer rod 6, so that the first connecting rod 7 can swing in a circular form around the outer rod 6. The first connecting rod 7 and the second connecting rod 8 are rotatably connected through the rotating shaft 9, and the second connecting rod 8 is inserted into the interior of the inner tube 10 and limited in the interior of the inner tube 10. The first connecting rod 7 swings, so that the first connecting rod 7 and the second connecting rod 8 are linked, and the second connecting rod 8 will be extended and retracted inside the inner tube 10, and the needle 11 is fixed at the bottom end of the second connecting rod 8. Through the linkage between the first connecting rod 7 and the second connecting rod 8, the needle 11 is 11 is retracted and expanded inside the inner tube 10 to achieve the purpose of pushing the needle 11, and in this process, the needle 11 does not need to bear pressure, which greatly improves the service life of the needle 11. The number of pulleys 13 is several, and the pulleys 13 are divided into two groups. Each group of pulleys 13 is symmetrical to each other. The second connecting rod 8 contacts each group of pulleys 13, and the second connecting rod 8 and the pulley 13 generate friction, so that the pulley 13 rotates. The second connecting rod 8 is limited by the pulley 13 to prevent the second connecting rod 8 from deviating during the extension and retraction process. A threading hole 14 is opened inside the needle 11, and the thread head is connected to the needle 11 through the threading hole 14. The bottom of the drive shell 1 is overlapped with a column 15, and the internal thread of the column 15 is connected to the first bolt 17 The bottom of the column 15 is provided with a cloth pressing block 18, and the interior of the cloth pressing block 18 is provided with a groove adapted to the needle 11. The needle 11 extends into the interior of the cloth pressing block 18, and the cloth pressing block 18 contacts the cloth to prevent the cloth from shaking. The needle 11 improves the sewing quality when sewing. The interior of the column 15 is provided with an inner hole 19, and the interior of the inner hole 19 is fixedly connected with a spring 20. The bottom of the spring 20 is fixedly connected with a push rod 21. When the cloth pressing block 18 applies pressure to the cloth, the push rod 21 drives the spring 20 to contract, thereby achieving the effect of increasing the tension force, thereby improving the pressure quality on the cloth. Both sides of the interior of the column 15 are fixedly connected with slide rails 22, and the interior of the slide rail 22 is slidably connected to a limit rod 23. One end of the limit rod 23 is slidably connected to the interior of the slide rail 22.The other end of the limiting rod 23 is fixedly connected to the top rod 21, thereby limiting the top rod 21 and preventing the top rod 21 from deflecting. The bottom of the cloth pressing block 18 is fixedly connected to an anti-slip strip 24, and the bottom of the anti-slip strip 24 is provided with anti-slip grooves. The setting between the anti-slip strip 24 and the anti-slip grooves can achieve the effect of improving friction. Both sides of the outside of the drive housing 1 are fixedly connected to mounting blocks 25. The internal thread of the mounting block 25 is connected to the second bolt 16. The mounting block 25 and the second bolt 16 can fix the drive housing 1 in the head of the seam sewing machine. The number of the second bolts 16 is four, and the four second bolts 16 are distributed in the form of a circular array. The number of the second bolts 16 and the mounting block 25 is four. Each second bolt 16 is threadedly connected to the inside of each mounting block 25 to improve the fixing effect. The inner wall of the motor box 4 is provided with a groove, and the inside of the groove is fixedly connected with sound insulation cotton. Through the setting of the sound insulation cotton, the noise generated by the motor 5 can be isolated inside the motor box 4 to reduce noise pollution.

[0036] In the present invention, during the process of extending and retracting the needle 11, the motor 5 is started, so that the motor 5 drives the disc 3 to rotate wholeheartedly inside the inner shell 2, the outer rod 6 is fixed at the edge of the outer surface of the disc 3, and the first connecting rod 7 is rotatably connected to the outside of the outer rod 6, so that the first connecting rod 7 can swing in a circular form around the outer rod 6, and the first connecting rod 7 is rotatably connected to the second connecting rod 8 through the rotating shaft 9, and the second connecting rod 8 is inserted into the interior of the inner cylinder 10 and limited inside the inner cylinder 10. The first connecting rod 7 swings, so that the first connecting rod 7 and the second connecting rod 8 are linked, and the second connecting rod 8 will be extended and retracted inside the inner cylinder 10, and the needle 11 is fixed at the bottom end of the second connecting rod 8. Through the linkage between the first connecting rod 7 and the second connecting rod 8, the needle 11 is The interior of the cylinder 10 retracts and expands to achieve the purpose of pushing the needle 11, and in this process, the needle 11 does not need to bear pressure, which greatly improves the service life of the needle 11. The interior of the cloth pressing block 18 is provided with a groove adapted to the needle 11, and the needle 11 extends to the interior of the cloth pressing block 18. The cloth pressing block 18 contacts the cloth to prevent the cloth from shaking. The needle 11 improves the sewing quality when sewing. When the cloth pressing block 18 applies pressure to the cloth, the push rod 21 drives the spring 20 to contract, thereby achieving the effect of increasing the tension, thereby improving the quality of pressure on the cloth. One end of the limit rod 23 is slidably connected to the inside of the slide rail 22, and the other end of the limit rod 23 is fixedly connected to the push rod 21, thereby being able to limit the push rod 21 to prevent the push rod 21 from deflecting.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A push structure for a flat seam sewing machine, comprising a drive housing (1), characterized in that: The inner shell (2) is fixedly installed inside the driving shell (1), and the inner shell (2) is rotatably connected to the disc (3). The outer shell (1) is fixedly connected to the motor box (4), and the motor (5) is arranged inside the motor box (4). The disc (3) is fixedly connected to the output end of the motor (5). The outer edge of the disc (3) is fixedly connected to the outer rod (6). The outer portion of the outer rod (6) is sleeved with a first connecting rod (7), and one end of the first connecting rod (7) is provided with a second connecting rod (8). The inner portions of the first connecting rod (7) and the second connecting rod (8) are both rotatably connected to a rotating shaft (9). The bottom of the driving shell (1) is fixedly connected to an inner cylinder (10), and the second connecting rod (8) extends to the inner portion of the inner cylinder (10). A needle (11) is fixedly installed at the bottom of the second connecting rod (8). The inner portion of the inner cylinder (10) is fixedly connected to a pulley frame (12), and the inner portion of the pulley frame (12) is rotatably connected to a pulley (13).

2. The push structure of a flat seaming machine according to claim 1, characterized in that: There are a plurality of pulleys (13), and the plurality of pulleys (13) are divided into two groups, and the pulleys (13) in each group are symmetrical to each other.

3. The push structure of a flat seaming machine according to claim 1, characterized in that: A threading hole (14) is provided inside the needle (11).

4. The push structure of a flat seaming machine according to claim 1, characterized in that: The bottom of the driving housing (1) is overlapped with a column (15), the internal thread of the column (15) is connected with a first bolt (17), and the bottom of the column (15) is provided with a cloth pressing block (18).

5. The push structure of a flat seaming machine according to claim 4, characterized in that: An inner hole (19) is provided inside the column (15), a spring (20) is fixedly connected to the inner hole (19), and a top rod (21) is fixedly connected to the bottom of the spring (20).

6. The push structure of a flat seaming machine according to claim 5, characterized in that: Both sides of the interior of the column (15) are fixedly connected with slide rails (22), and the interior of the slide rails (22) is slidably connected with a limit rod (23).

7. The push structure of a flat seaming machine according to claim 4, characterized in that: The bottom of the cloth pressing block (18) is fixedly connected with an anti-slip strip (24), and the bottom of the anti-slip strip (24) is provided with anti-slip grooves.

8. The push structure of a flat seaming machine according to claim 1, characterized in that: Both sides of the exterior of the drive housing (1) are fixedly connected with mounting blocks (25), and the interior of the mounting blocks (25) is threadedly connected with a second bolt (16).

9. The push structure of a flat seaming machine according to claim 8, characterized in that: The number of the second bolts (16) is four, and the four second bolts (16) are distributed in the form of a circular array.

10. The push structure of a flat seaming machine according to claim 1, characterized in that: A groove is provided on the inner wall of the motor box (4), and sound insulation cotton is fixedly connected inside the groove.

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