Automatic bag clamping and sewing device

Abstract

The utility model discloses an automatic bag clamping and sewing device, it includes: gear box, clamping plate and second threaded chamber, gear box inner wall rotationally connected with gear, gear side wall is connected with rack, one side of rack is fixedly connected with one side of second threaded chamber, both sides of second threaded chamber are all fixedly connected with horizontal plate, two the lower surface of horizontal plate is all fixedly connected with spring, four clamping plates adjacent two are a group, and the outer side of two groups of clamping plates is all provided with a plurality of thread grooves, and the outer side of two groups of clamping plates is all provided with vertical plate, and the middle part of two vertical plates is all spaced apart and is connected with two bolts in thread groove inside and extends. Through above -mentioned structure can prevent the phenomenon that sewing thread deviates and can satisfy the demand of the packaging bag sewing of different material.

Description

Technical Field

[0001] This utility model relates to the field of bag sewing technology, and in particular to an automatic bag clamping and sewing device. Background Technology

[0002] Traditional bag sewing requires manual handling to align and clamp the bag before sewing. This is not only inefficient, but also results in uneven clamping force and large positioning deviations, which can easily lead to irregular and inconsistent sewing positions. Ultimately, the quality of the sewn products varies, making it difficult to meet the needs of large-scale production. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic bag-clamping and sewing device, which can prevent the sewing thread from shifting and can meet the sewing needs of packaging bags of different materials.

[0004] To achieve the above objectives, an automatic bag-clamping and sewing device is provided, comprising: a gearbox, clamping plates, and a second threaded chamber. A gear is rotatably connected to the inner wall of the gearbox, and a rack is meshed with the side wall of the gear. One side of the rack is fixedly connected to one side of the second threaded chamber. Horizontal plates are fixedly connected to both sides of the second threaded chamber, and springs are fixedly connected to the lower surfaces of both horizontal plates.

[0005] According to the automatic bag-clamping and sewing device, there are four clamping plates. The four clamping plates are arranged in pairs. Multiple threaded grooves are opened on the outer side of both sets of clamping plates. Vertical plates are provided on the outer side of both sets of clamping plates. Two bolts are threadedly connected at intervals in the middle of the two vertical plates and extend into the threaded grooves.

[0006] According to the automatic bag-clamping and sewing device, a threaded rod is rotatably connected to the inner wall of the second threaded chamber, a second threaded block is threadedly connected to the outside of the threaded rod, a fixing block is fixedly connected to the lower surface of the second threaded block, and a first threaded chamber is fixedly connected to the lower surface of the fixing block.

[0007] According to the aforementioned automatic bag-clamping and sewing device, a bidirectional threaded rod is rotatably connected to the inner wall of the first threaded chamber, and a sliding rod is fixedly connected to the inner wall of the first threaded chamber. Two first threaded blocks are threadedly connected at intervals to the outside of the bidirectional threaded rod, and two sliders are slidably connected at intervals to the outside of the sliding rod.

[0008] According to the automatic bag-sewing device, two first threaded blocks and two sliders are grouped together, and the lower surfaces of the two groups of first threaded blocks and sliders are fixedly connected to connecting blocks. The lower surfaces of the four connecting blocks are respectively fixedly connected to the upper surfaces of two clamping plates.

[0009] According to the automatic bag-clamping and sewing device, a second motor is provided on the outer side of the second threaded rod, and the output end of the second motor is fixedly connected to one end of the threaded rod. A first motor is provided on the outer side of the first threaded rod, and the output end of the first motor is fixedly connected to one end of the bidirectional threaded rod.

[0010] According to the automatic bag-clamping and sewing device, a third motor is provided on the outside of the gearbox, and the output end of the third motor is fixedly connected to one side of the gear.

[0011] According to the automatic bag-clamping and sewing device, two springs are fixedly connected to the lower surfaces of each spring, and a limit rod is fixedly connected to the middle of the two fixed plates. The two limit rods are slidably connected to the middle of the two horizontal plates respectively.

[0012] According to the automatic bag clamping and sewing device, anti-slip pads are fixedly connected to the inner sides of the four clamping plates. A conveyor belt body is provided on the lower surface of the clamping plate. A sewing machine body is provided on one side of the clamping plate. A presser foot is provided on one side of the sewing machine body.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] 1. This utility model utilizes the symmetrical force distribution of the I-shaped clamps at the top and bottom, which allows the stitching to fit tightly against the bag opening, reducing gaps and enhancing the sealing effect. The I-shaped clamps adjust the bag tension by shortening the distance between the top and bottom. For elastic bags, tightening the tension prevents the bag from becoming loose during the sewing process, which could lead to crooked stitches or shifting of the sewing position.

[0015] 2. This utility model can ensure that the bag opening is always in the optimal sewing position by adjusting the height of the clamping plate. When the packaging bag has insufficient support or is easily deformed, it can be adjusted to the height of the packaging bag for clamping and then adjusted to the height of the sewing machine for sewing, adapting to bag openings in different states.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a perspective view of the clamping plate of an automatic bag-clamping and sewing device according to the present invention;

[0019] Figure 2 This is a cross-sectional view of an automatic bag-clamping and sewing device according to the present invention;

[0020] Figure 3This is a cross-sectional view of the clamping plate and the first threaded chamber of an automatic bag-clamping and sewing device according to this utility model;

[0021] Figure 4 This is a cross-sectional view of the gearbox of an automatic bag-clamping and sewing device according to this utility model.

[0022] Legend:

[0023] 1. Gearbox; 2. First motor; 3. Threaded groove; 4. Conveyor belt body; 5. Bolt; 6. Sewing machine body; 7. Presser foot; 8. Spring; 9. Limiting rod; 10. Bidirectional threaded rod; 11. First threaded block; 12. Second threaded block; 13. First threaded chamber; 14. Connecting block; 15. Threaded rod; 16. Second motor; 17. Horizontal plate; 18. Fixing plate; 19. Vertical plate; 20. Clamping plate; 21. Third motor; 22. Second threaded chamber; 23. Gear; 24. Rack; 25. Anti-slip pad; 26. Slide rod; 27. Slider. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model provides an automatic bag-clamping and sewing device, which includes: a gearbox 1, a clamping plate 20, and a second threaded chamber 22. The clamping plate 20 is used to clamp the opening of the bag for easy sewing. A gear 23 is rotatably connected to the inner wall of the gearbox 1. When rotating, it drives the rack 24 to move. The rack 24 is meshed with the side wall of the gear 23. When moving, it drives the second threaded chamber 22 to move up and down, thereby adjusting the height of the clamping plate 20. One side of the rack 24 is fixedly connected to one side of the second threaded chamber 22. Horizontal plates 17 are fixedly connected to both sides of the second threaded chamber 22 for sliding outside the limiting rod 9. Springs 8 are fixedly connected to the lower surface of both horizontal plates 17 to provide auxiliary support, so that the rack 24 moves with the second threaded chamber 22 more smoothly.

[0026] There are four clamping plates 20, with two adjacent clamping plates 20 forming a group. The outer sides of both groups of clamping plates 20 have multiple threaded grooves 3, which provide position selection for the height between the two clamping plates 20. When it is necessary to adjust the distance between the two clamping plates 20, the threaded groove 3 of the appropriate height is selected and fixed with bolts 5 to achieve fine adjustment of the distance between the two clamping plates 20. At the same time, the tension between the clamping plates 20 can be adjusted. The outer sides of both groups of clamping plates 20 are provided with vertical plates 19, which are used to connect the upper and lower clamping plates 20. The vertical plates 19 and the upper and lower clamping plates 20 are connected to form an "I" shape. The bag clamped between the upper and lower clamping plates 20 has a certain tension, which facilitates better sewing. There are two bolts 5 in the middle of the two vertical plates 19, which are threaded at intervals and extend into the threaded grooves 3. The bolts 5 and the threaded grooves 3 cooperate to fix the bag.

[0027] The inner wall of the second threaded chamber 22 is rotatably connected to a threaded rod 15, which drives the second threaded block 12 to move. The threaded rod 15 is externally threaded to the second threaded block 12, which drives the fixed block to move, thereby driving the first threaded chamber 13 to move. The lower surface of the second threaded block 12 is fixedly connected to a fixed block, and the lower surface of the fixed block is fixedly connected to the first threaded chamber 13, which is used to install the bidirectional threaded rod 10 and the slide rod 26.

[0028] The inner wall of the first threaded chamber 13 is rotatably connected to a bidirectional threaded rod 10, which drives the first threaded block 11 to move in a relative direction. The inner wall of the first threaded chamber 13 is fixedly connected to a slide rod 26. The slider 27 slides on the slide rod 26 through the movement of the first threaded block 11. The bidirectional threaded rod 10 is externally connected to two first threaded blocks 11 at intervals, which drives the connecting block 14 to move, thereby driving the clamping plate 20 to move. The slide rod 26 is externally connected to two sliders 27 at intervals.

[0029] The two first threaded blocks 11 and the two sliders 27 are grouped together. The lower surfaces of the two groups of first threaded blocks 11 and sliders 27 are fixedly connected with connecting blocks 14 to connect the clamping plate 20 and the first threaded blocks 11 and sliders 27. The two adjacent lower surfaces of the four connecting blocks 14 are fixedly connected to the upper surfaces of two of the clamping plates 20 respectively.

[0030] A second motor 16 is provided on the outside of the second threaded chamber 22, which drives the threaded rod 15 to rotate, thereby moving the clamping plate 20 left and right. The output end of the second motor 16 is fixedly connected to one end of the threaded rod 15. A first motor 2 is provided on the outside of the first threaded chamber 13, which drives the bidirectional threaded rod 10 to move in both directions, thereby causing the clamping plate 20 to open and close. The output end of the first motor 2 is fixedly connected to one end of the bidirectional threaded rod 10.

[0031] A third motor 21 is provided on the outside of the gearbox 1, which drives the gear 23 to rotate, thereby causing the rack 24 to move up and down, ultimately realizing the function of adjusting the height of the clamping plate 20. The output end of the third motor 21 is fixedly connected to one side of the gear 23.

[0032] Both springs 8 have fixed plates 18 fixedly connected to their lower surfaces to provide an installation location for the springs 8. Limiting rods 9 are fixedly connected to the middle of the two fixed plates 18, which cooperate with the horizontal plate 17 to make the second threaded chamber 22 move up and down more smoothly, prevent it from swinging during movement, and provide auxiliary support to distribute the load of the gears. The two limiting rods 9 are slidably connected to the middle of the two horizontal plates 17 respectively.

[0033] Anti-slip pads 25 are fixedly connected to the inner sides of the four clamping plates 20 to prevent the clamping plates 20 from slipping when they come into contact with the bags. A conveyor belt body 4 is provided on the lower surface of the clamping plates 20 to transport the bags that need to be sewn. A sewing machine body 6 is provided on one side of the clamping plates 20 to sew the bags. A presser foot 7 is provided on one side of the sewing machine body 6 to transfer the bags clamped by the clamping plates 20 to the sewing machine body 6.

[0034] Working principle: When in use, the third motor 21 drives the gear 23 to move the second threaded chamber 22, along with the clamping plate 20, up and down to a suitable height. After determining the height, the first motor 2 drives the bidirectional threaded rod 10 to clamp the bag with the clamping plate 20. The clamping plate 20 is in an "I" shape, making the bag fit more snugly between the upper and lower clamping plates 20. The second motor 16 drives the threaded rod 15 to move the clamping plate 20 towards the presser foot 7. At the same time, the conveyor belt 4 is started to send the bag to the sewing machine body 6 for sewing. When sewing bags of different materials, the distance between the vertical plate 19 and the clamping plate 20 can be adjusted. The vertical plate 19 is fixed by selecting a suitable threaded groove 3, thereby adjusting the distance between the upper and lower parts of the clamping plate 20. For elastic bags, the distance between the upper and lower parts of the clamping plate 20 is shortened, so that the bag tightens its tension and prevents the sewing position from shifting due to its elasticity during the sewing process. If the bag is not supported enough, the height of the clamping plate 20 can be lowered first to move it above the bag. After clamping the bag, the height of the clamping plate 20 is adjusted to the presser foot 7 for feeding and sewing. For bags that are higher than the presser foot 7, the clamping plate 20 is used to clamp the bag and lower its height to the presser foot 7 for feeding and sewing.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An automatic bag-sewing device, comprising: The gearbox (1), clamping plate (20), and second threaded chamber (22) are characterized in that a gear (23) is rotatably connected to the inner wall of the gearbox (1), a rack (24) is meshed with the side wall of the gear (23), one side of the rack (24) is fixedly connected to one side of the second threaded chamber (22), and a horizontal plate (17) is fixedly connected to both sides of the second threaded chamber (22), and a spring (8) is fixedly connected to the lower surface of both horizontal plates (17); The clamping plate (20) is provided in four pairs. The four clamping plates (20) are arranged in pairs. Multiple threaded grooves (3) are provided on the outer side of each pair of clamping plates (20). Vertical plates (19) are provided on the outer side of each pair of clamping plates (20). Two bolts (5) are threadedly connected at intervals in the middle of each pair of vertical plates (19) and extend into the threaded grooves (3).

2. An automatic bag clamping and sewing apparatus according to claim 1, wherein The inner wall of the second threaded chamber (22) is rotatably connected to a threaded rod (15), and the threaded rod (15) is externally threaded to a second threaded block (12). A fixing block is fixedly connected to the lower surface of the second threaded block (12), and the lower surface of the fixing block is fixedly connected to a first threaded chamber (13).

3. An automatic bag clamping and sewing apparatus according to claim 2, wherein The inner wall of the first threaded chamber (13) is rotatably connected to a bidirectional threaded rod (10), and the inner wall of the first threaded chamber (13) is fixedly connected to a slide rod (26). The bidirectional threaded rod (10) is externally connected to two first threaded blocks (11) at intervals, and the slide rod (26) is externally connected to two sliders (27) at intervals.

4. An automatic bag clamping and sewing apparatus according to claim 3, wherein The two first threaded blocks (11) and the two sliders (27) are grouped together. The lower surfaces of the two groups of first threaded blocks (11) and sliders (27) are fixedly connected to connecting blocks (14). The two adjacent lower surfaces of the four connecting blocks (14) are fixedly connected to the upper surfaces of two clamping plates (20) respectively.

5. An automatic bag clamping and sewing apparatus according to claim 2, wherein A second motor (16) is provided on the outside of the second thread chamber (22), and the output end of the second motor (16) is fixedly connected to one end of the thread rod (15). A first motor (2) is provided on the outside of the first thread chamber (13), and the output end of the first motor (2) is fixedly connected to one end of the bidirectional thread rod (10).

6. An automatic bag clamping and sewing apparatus according to claim 1, wherein A third motor (21) is provided on the outside of the gearbox (1), and the output end of the third motor (21) is fixedly connected to one side of the gear (23).

7. An automatic bag clamping and sewing apparatus according to claim 1, wherein A fixing plate (18) is fixedly connected to the lower surface of each of the two springs (8). A limit rod (9) is fixedly connected to the middle of the two fixing plates (18). The two limit rods (9) are slidably connected to the middle of the two horizontal plates (17) respectively.

8. An automatic bag clamping and sewing apparatus according to claim 1, wherein Anti-slip pads (25) are fixedly connected to the inner sides of the four clamping plates (20). A conveyor belt body (4) is provided on the lower surface of the clamping plate (20). A sewing machine body (6) is provided on one side of the clamping plate (20). A presser foot (7) is provided on one side of the sewing machine body (6).

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