Automatic clamping sewing apparatus

Abstract

The present application relates to the technical field of table clamping, and discloses an automatic clamping sewing device for improving the sewing efficiency of cotton clamping composite fabric, which comprises a rack, a sewing platform and a sewing head, the sewing platform comprises a first platform and a second platform, the first platform and the second platform are respectively arranged at the front and rear ends of the rack and fixedly arranged on the top of the rack, the rack is arranged between the first platform and the second platform to form a sewing space, the bottom of the sewing space is extended to the left side to be provided with a first mounting platform, the sewing head is slidably arranged on the first mounting platform, the upper surface of the needle plate of the sewing head is flush with the surfaces of the first platform and the second platform, the first mounting platform is provided with a sliding driving device for driving the sewing head to slide leftward and rightward, and the left and right sides of the first platform and the second platform are respectively provided with automatic clamping conveying devices for clamping and conveying the superposed fabric layers.

Description

Technical Field

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

[0002] When walking, backpacks bounce and rub against the back with each step, especially during outdoor hiking, where rough terrain exacerbates the impact. Therefore, most backpacks now feature a quilted back. A quilted back mainly consists of an outer fabric, a middle cotton core, and a bottom lining. The middle cotton core forms a cushioning layer that acts like a shock absorber, absorbing the impact of the backpack's movement and reducing stress on the back and lumbar spine. It also insulates the internal items from hard objects hitting the back.

[0003] Currently, there are two manufacturing processes for the back of quilted fabric: hot-press lamination and sewing lamination. Hot-press lamination involves bonding five layers: an outer fabric, a hot-melt adhesive film, a middle cotton core, another hot-melt adhesive film, and a bottom lining. These layers are first hot-pressed together and then cooled and set, fixing them into a single, unified quilted fabric. When needed, the quilted fabric is cut into pieces. Sewing, on the other hand, involves first cutting the outer layer, cotton core, and lining separately, then manually sewing the seams and securing them. Sewing relies excessively on manual alignment and stitching, limiting the processing efficiency of the quilted backing.

[0004] To address the aforementioned issues, this invention proposes an automatic clamping sewing device that automatically clamps the overlapping fabric of the outer layer, cotton core, and lining, automatically feeds the material, and automatically sews and fixes the thread. This device enables continuous sewing to prepare composite fabric, which is then cut as needed so that subsequent manual sewing of the cut pieces with other surface pieces can be used to form a bag. Summary of the Invention

[0005] Therefore, in view of the above problems, the present invention proposes an automatic clamping sewing device for improving the sewing efficiency of quilted composite fabrics.

[0006] To solve the above-mentioned technical problems, the solution adopted by the present invention is: an automatic clamping sewing device, including a frame, a sewing platform, and a sewing machine head, characterized in that: the sewing platform includes a first platform and a second platform, the first platform and the second platform are respectively located at the front and rear ends of the frame and fixedly disposed on the top of the frame, the frame is located between the first platform and the second platform to form a sewing space, a first mounting platform is provided extending to the left from the bottom of the sewing space, the sewing machine head is slidably disposed on the first mounting platform, and the upper surface of the needle plate of the sewing machine head is flush with the surfaces of the first platform and the second platform; the first mounting platform... The mounting platform is equipped with a sliding drive device for driving the sewing machine head to slide left and right; automatic clamping and conveying devices for clamping and automatically conveying stacked fabric layers are respectively provided on the left and right sides of the first platform and the second platform; the automatic clamping and conveying device includes an upper clamping seat and a lower clamping seat, the front and rear ends of the upper clamping seat are respectively provided with an upper front belt roller and an upper rear belt roller, and an upper conveyor belt is wound between the upper front belt roller and the upper rear belt roller; the front and rear ends of the lower clamping seat are respectively provided with a lower front belt roller and a lower rear belt roller, and a lower conveyor belt is wound between the lower front belt roller and the lower rear belt roller; the upper clamping seat and the lower clamping seat are respectively provided with a lower front belt roller and a lower rear belt roller, and a lower conveyor belt is wound between the upper clamping seat and the lower clamping seat. A plurality of clamping rollers are provided to increase the holding force of the conveyor belt on the stacked fabric. One clamping roller is rotatably mounted on the upper clamping seat, and the other clamping roller is rotatably mounted on the lower clamping seat. The lower clamping seat is fixedly mounted on the frame along the left and right sides of the first and second platforms, and the surface of the lower conveyor belt is flush with the first and second platforms. A lifting drive device for installing and driving the upper clamping seat to move up and down is provided between the upper and lower clamping seats. Two upper front belt rollers of the first platform are fixedly mounted with synchronously rotating first upper gears, and two lower front belt rollers are fixedly mounted with synchronously rotating second upper gears. The first upper gear meshes with the first lower gear for transmission; the second platform has two upper rear belt rollers with synchronously rotating second upper gears fixedly mounted on them, and two lower rear belt rollers with synchronously rotating second lower gears fixedly mounted on them, with the second upper gears meshing with the second lower gears for transmission; a first drive shaft is fixedly mounted between the two lower rear belt rollers of the first platform to synchronously drive the two lower rear belt rollers to rotate, and a second drive shaft is fixedly mounted between the two lower front belt rollers of the second platform to synchronously drive the two lower front belt rollers to rotate; the frame is equipped with a rotation drive device for synchronously driving the first drive shaft and the second drive shaft to rotate.

[0007] A further improvement is that a directional adjustment device is provided below the needle plate of the sewing machine head to adjust the sewing trajectory so as to sew a non-linear sewing trajectory.

[0008] A further improvement is made to the steering device, which includes a rotating platform and a second mounting platform. The rotating platform consists of an upper rotating plate and a lower rotating plate. The housing of the sewing machine head is fixedly mounted on the upper rotating plate. The second mounting platform is fixedly mounted on the frame within the sewing space below the needle plate of the sewing machine head. Two first slide rails are fixedly mounted parallel to each other on the second mounting platform in the left-right direction. First sliders are slidably mounted on the first slide rails. First electric screws are mounted on the two first sliders. Rotating mounting seats are respectively mounted on the front and rear ends of the first electric screws. The two rotating mounting seats are respectively fixedly mounted on the two first sliders. A positioning block is fixedly mounted on the rotating sleeve of the first electric screw. The positioning block has a positioning channel vertically downward from its upper surface. A positioning post with its outer wall fitting against the inner wall of the positioning channel is movably mounted in the positioning channel. The top of the positioning post is fixedly mounted on the lower surface of the needle plate of the sewing machine head. The sewing center point of the sewing machine head is located on the central axis of the positioning post.

[0009] A further improvement is made to the sliding drive device, which includes two second slide rails, four second sliders, and a second electric lead screw. The two second slide rails are arranged parallel to each other in the left-right direction on the first mounting platform. The second sliders are slidably arranged on the slide rails in pairs. The lower rotating plate is fixedly arranged on the four second sliders. The second electric lead screw is located below the second mounting platform and between the two second slide rails, and is fixedly arranged on the first mounting platform. The rotating sleeve of the second electric lead screw is fixedly arranged on the lower rotating plate.

[0010] A further improvement is made to the lifting drive device, which includes a fixed plate, a lifting plate, and a cylinder. The fixed plate is horizontally fixed to the lower clamping seat, the lifting plate is fixed to the upper clamping seat, the cylinder housing is vertically fixed to the upper surface of the lifting plate, and the cylinder piston rod passes through the lifting plate and is fixed to the fixed plate. Guide structures are respectively provided on both ends of the fixed plate and the lifting plate.

[0011] A further improvement is that the guide structure includes a guide sleeve and a guide rod. The guide sleeve is fixedly inserted into the fixed plate, and the guide rod slides through the inside of the guide sleeve. The top of the guide rod is fixedly disposed on the lower surface of the lifting plate.

[0012] A further improvement is made to the following: the rotation drive device includes a rotation motor, a three-axis commutator, two linkage shafts, several sprockets, and two chains. The housing of the rotation motor is fixedly mounted on the frame. The input shaft of the three-axis commutator is connected to the rotation shaft of the rotation motor. One end of each of the two linkage shafts is fixedly connected to the two output shafts of the three-axis commutator in the left-right direction, and the other end is rotatably mounted on the frame. Sprockets are fixedly sleeved on both ends of the first drive shaft, the second drive shaft, and the two linkage shafts. The chains are located at both ends of the first drive shaft, the second drive shaft, and the linkage shafts and are wound around the sprockets of the first drive shaft, the second drive shaft, and the linkage shafts.

[0013] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0014] The emergence of automated clamping sewing equipment not only solved the single pain point of relying on manual processing for the back of backpack padded fabric, but also promoted the technological upgrading and intelligent transformation of the entire backpack manufacturing industry from a technical perspective, injecting new momentum into the industry's development.

[0015] In terms of technological innovation, the equipment deeply integrates automation and precision control technologies with traditional sewing processes, breaking away from the traditional industry model of "heavy on manual labor and light on technology." Its integrated process of "automatic clamping - synchronous conveying - precision sewing - on-demand cutting" provides a standardized processing solution for backpack production, changing the traditional reliance on worker experience and shifting the processing of the quilted backing from "manual operation" to "standardized production." This is conducive to establishing unified quality standards in the industry and improving overall product quality.

[0016] From the perspective of intelligent transformation, the equipment connects with the enterprise's production management system through coordinate positioning to control the sewing path, enabling real-time adjustment of production parameters and automatic collection and analysis of production data. For example, by setting sewing trajectory parameters for different backpack styles through the system, the equipment can quickly switch production modes without manual readjustment, significantly improving the flexibility of the production line. This intelligent capability allows the stitching trajectory on the back of the backpack to go beyond simply fixing the seams; it can better adapt to current consumer demands for personalized backpacks, such as customizing different sewing patterns and presenting different pattern effects through visible stitching. The equipment's flexible sewing trajectory capability provides more possibilities for design innovation, further enriching product categories and driving the innovative development of the entire industry. It lays the technological foundation for enterprises to achieve "flexible production" and "on-demand manufacturing," promoting the industry's transformation from "mass production" to "precision and personalized production."

[0017] The automatic clamping and conveying device, through upper and lower conveyor belts and clamping rollers, stably clamps the composite fabric consisting of the outer layer, cotton core, and lining. With the synchronous control of the first and second drive shafts and the rotation drive device, it achieves uniform and precise fabric conveying, eliminating the need for manual intervention in fabric positioning and movement, and completely eliminating the inefficient "manual feeding - pause adjustment - continue sewing" mode. Compared to traditional processes, this equipment can continuously sew composite fabrics, increasing processing efficiency by at least three times. It is particularly suitable for scenarios with high demand for quilted backing, such as outdoor backpacks, significantly shortening production cycles and helping companies respond quickly to market orders. The automatic clamping sewing equipment offers various sewing trajectories, including straight lines, zigzag lines, curves, and closed loops. Based on the design requirements of the quilted backing, the same equipment can perform zoned and line-type sewing, and can also use denser sewing trajectories such as closed loop stitches to enhance the local strength of the quilted backing. Attached Figure Description

[0018] Figure 1 This is a top view of the automatic clamping sewing device according to an embodiment of the present invention.

[0019] Figure 2 This is a top view of the internal structure of the automatic clamping sewing device according to an embodiment of the present invention.

[0020] Figure 3 This is a side view of the sliding drive device and the adjusting device in the automatic clamping sewing equipment of this invention.

[0021] Figure 4 This is a side view of the automatic clamping and conveying device in the automatic clamping sewing equipment according to an embodiment of the present invention.

[0022] Figure 5 yes Figure 3 Enlarged view of the local structure at point A in the middle. Detailed Implementation

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0024] refer to Figures 1 to 5The present invention discloses an automatic clamping sewing device, including a frame 10, a sewing platform, and a sewing machine head 11. The sewing platform includes a first platform 12 and a second platform 13, which are respectively located at the front and rear ends of the frame 10 and fixedly disposed on the top of the frame 10. The frame 10 forms a sewing space 14 between the first platform 12 and the second platform 13, allowing the sewing machine head 11 to swing back and forth and move left and right to sew various sewing patterns. The bottom of the sewing space 14 extends to the left. A first mounting platform 15 is fixedly mounted on the frame 10. The sewing machine head 11 is slidably mounted on the first mounting platform 15. The upper surface of the needle plate 111 of the sewing machine head 11 is flush with the surfaces of the first platform 12 and the second platform 13. A sliding drive device for driving the sewing machine head 11 to slide left and right is provided on the first mounting platform 15. Automatic clamping and conveying devices for clamping and conveying stacked fabric layers are respectively provided on the left and right sides of the first platform 12 and the second platform 13.

[0025] The automatic clamping and conveying device includes an upper clamping seat 16 and a lower clamping seat 17. An upper front belt roller 18 and an upper rear belt roller 19 are respectively arranged at the front and rear ends of the upper clamping seat 16. An upper conveyor belt 20 is wound between the upper front belt roller 18 and the upper rear belt roller 19. A lower front belt roller 21 and a lower rear belt roller 22 are respectively arranged at the front and rear ends of the lower clamping seat 17. A lower conveyor belt 23 is wound between the lower front belt roller 21 and the lower rear belt roller 22. A plurality of spacings are provided on the upper clamping seat 16 and the lower clamping seat 17 to increase... The conveyor belt applies clamping force to the stacked fabric using clamping rollers 24. One clamping roller of the clamping rollers 24 is rotatably mounted on the upper clamping seat 16, and the other clamping roller is rotatably mounted on the lower clamping seat 17. The lower clamping seat 17 is fixedly mounted on the frame 10 along the left and right sides of the first platform 12 and the second platform 13. The surface of the lower conveyor belt 23 is flush with the first platform 12 and the second platform 13. A lifting drive device for installing and driving the upper clamping seat 16 to move up and down is provided between the upper clamping seat 16 and the lower clamping seat 17.

[0026] The first platform 12 has two upper front belt rollers 18 with synchronously rotating first upper gears 25 fixedly mounted on them, and two lower front belt rollers 21 with synchronously rotating first lower gears 26 fixedly mounted on them. The first upper gears 25 and the first lower gears 26 mesh and drive each other. The second platform 13 has two upper rear belt rollers 19 with synchronously rotating second upper gears fixedly mounted on them, and two lower rear belt rollers 22 with synchronously rotating second lower gears fixedly mounted on them. The second upper gears and the second lower gears mesh and drive each other. The first drive shaft 29 that synchronously drives the two lower rear belt rollers 22 is fixedly mounted between the two lower rear belt rollers 22 of the first platform 12. The second drive shaft 30 that synchronously drives the two lower front belt rollers 21 is fixedly mounted between the two lower front belt rollers 21 of the second platform 13. The frame 10 is equipped with a rotation drive device for synchronously driving the first drive shaft 29 and the second drive shaft 30.

[0027] Below the needle plate 111 of the sewing machine head 11, a directional adjustment device is provided for adjusting the sewing trajectory to sew a non-linear sewing trajectory. The directional adjustment device includes a rotating platform and a second mounting platform 32. The rotating platform consists of an upper rotating plate 311 and a lower rotating plate 312. The housing of the sewing machine head 11 is fixedly mounted on the upper rotating plate 311. The second mounting platform 32 is located within the sewing space 14 below the needle plate 111 of the sewing machine head 11 and is fixedly mounted on the frame 10. Two first slide rails 33 are fixedly mounted parallel to each other in the left-right direction on the second mounting platform 32. First sliders 34 slide on the first slide rails 33, and first electric lead screws 35 are mounted on the two first sliders 34. The first electric lead screw 35 is provided with a rotating mounting seat 36 at its front and rear ends respectively. The two rotating mounting seats 36 are respectively fixedly mounted on the two first sliders 34. A positioning block 38 is fixedly mounted on the rotating sleeve 37 of the first electric lead screw 35. The positioning block 38 has a positioning channel vertically downward from its upper surface. A positioning post 39 with its outer wall in contact with the inner wall of the positioning channel is movably mounted in the positioning channel. The top of the positioning post 39 is fixedly mounted on the lower surface of the needle plate table 111 of the sewing machine head 11. The sewing center point of the sewing machine head is located on the central axis of the positioning post 39.

[0028] The sliding drive device includes two second slide rails 40, four second sliders 41, and a second electric lead screw 42. The two second slide rails 40 are arranged parallel to each other in the left-right direction on the first mounting platform 15. The second sliders 41 are slidably arranged on the second slide rails 40 in pairs. The lower rotating plate 312 is fixedly arranged on the four second sliders 41. The second electric lead screw 42 is located below the second mounting platform 32 and between the two second slide rails 40, and is fixedly arranged on the first mounting platform 15. The rotating sleeve 43 of the second electric lead screw 42 is fixedly arranged on the lower rotating plate 312.

[0029] The lifting drive device includes a fixed plate 44, a lifting plate 45, and a cylinder 46. The fixed plate 44 is horizontally fixed to the lower clamping seat 17, and the lifting plate 45 is fixed to the upper clamping seat 16. The housing of the cylinder 46 is vertically fixed to the upper surface of the lifting plate 45, and the piston rod of the cylinder 46 passes through the lifting plate 45 and is fixed to the fixed plate 44. Guide structures are respectively provided at both ends of the fixed plate 44 and the lifting plate 45. The guide structure includes a guide sleeve 47 and a guide rod 48. The guide sleeve 47 is fixedly inserted into the fixed plate 44, and the guide rod 48 slides through the inside of the guide sleeve 47. The top of the guide rod 48 is fixedly disposed on the lower surface of the lifting plate 45.

[0030] The rotation drive device includes a rotation motor, a three-axis commutator, two linkage shafts, several sprockets, and two chains. The housing of the rotation motor is fixedly mounted on the frame 10. The input shaft of the three-axis commutator is connected to the rotation shaft of the rotation motor. One end of each of the two linkage shafts is fixedly connected to the two output shafts of the three-axis commutator in the left-right direction, and the other end is rotatably mounted on the frame 10. Sprockets are fixedly sleeved on both ends of the first drive shaft 29 and the second drive shaft 30, as well as on the two linkage shafts. The chains are located at both ends of the first drive shaft 29 and the second drive shaft 30 and are wound around the sprockets of the first drive shaft 29, the second drive shaft 30, and the linkage shafts.

[0031] Working principle of automatic clamping sewing equipment:

[0032] The outer layer, cotton core, and lining are stacked to form a composite layer. The left and right edges of the composite layer are fed into the automatic clamping and conveying devices on the left and right sides of the first platform 12 and the second platform 13. The upper conveyor belt 20 and the lower conveyor belt 23 clamp the main composite layer, so that the composite layer located in the sewing space 14 is in a suspended state. The sewing machine head 11 moves to fix the first composite layer with stitches. The left and right movement direction of the first electric screw 35 is taken as the X-axis, the front and back movement direction of the second electric screw 42 is taken as the Y-axis, and the initial position of the sewing center of the sewing machine head 11 is taken as the origin. The sewing path is positioned and controlled by coordinate method so that the sewing trajectory formed after sewing can be a straight sewing trajectory, a zigzag sewing trajectory, a curved sewing trajectory, or a closed circular sewing trajectory.

[0033] Specifically, the clamping and conveying of the composite layer is achieved by an automatic clamping and conveying device and a rotary drive device. The piston rod of cylinder 46 extends to lift the lifting plate 45. The lifting plate 45 moves smoothly upward under the action of the guide sleeves 47 and guide rods 48 on both sides. The composite layer is manually flattened and placed between the upper and lower clamping seats 17. Then the piston rod of cylinder 46 retracts, and the upper clamping seat 16 clamps the lower clamping seat 17. The first upper gear 25 meshes with the first lower gear 26, and the second upper gear meshes with the second lower gear. The rotary motor synchronously controls the rotation of two linkage shafts through a three-axis commutator. The linkage shafts drive the first drive shaft 29 and the second drive shaft 30 to rotate through chains and sprockets. This synchronously drives the two lower rear belt rollers 22 on the first platform 12 and the two lower front belt rollers 21 on the second platform 13 to rotate, causing the lower conveyor belt 23 and the upper conveyor belt 20 to synchronously clamp and convey the composite layer. After conveying the composite layer to the system set length, the conveying stops and the composite layer is continuously clamped.

[0034] Specifically, the sliding drive device drives the sewing machine head 11 to slide back and forth left and right, and the orientation device adjusts the position of the sewing center of the sewing machine head 11 in the front-back direction during the sliding process; the second electric screw 42 drives the lower rotating plate 312 to drive the sewing machine head 11 to slide back and forth left and right along the second slide rail 40; the rotating sleeve of the first electric screw 35 moves back and forth repeatedly, driving the positioning block 38 and the positioning column 39 inside the positioning block 38 to move back and forth, adjusting the position of the sewing center in the front-back direction; so that the left-right direction where the first electric screw 35 is located is the X-axis, the front-back direction where the second electric screw 42 is located is the Y-axis, and the initial position of the sewing center when the sewing machine head 11 moves to the leftmost end is the origin, and the operating system controls the sewing path by using the real-time sewing center as the new coordinate point in a coordinate manner, so that the sewing trajectory formed after sewing can be a straight sewing trajectory, a zigzag sewing trajectory, a curved sewing trajectory, or a closed circular sewing trajectory.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions above are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An automatic clamping sewing device, comprising a frame, a sewing platform, and a sewing machine head, characterized in that: The sewing platform includes a first platform and a second platform. The first platform and the second platform are fixedly mounted on the top of the frame at the front and rear ends, respectively. The frame forms a sewing space between the first platform and the second platform. A first mounting platform extends to the left from the bottom of the sewing space. The sewing machine head is slidably mounted on the first mounting platform. The upper surface of the needle plate of the sewing machine head is flush with the surfaces of the first platform and the second platform. A sliding drive device for driving the sewing machine head to slide left and right is provided on the first mounting platform. Automatic clamping and conveying devices for automatically conveying and stacking fabric layers are respectively provided on the left and right sides of the first platform and the second platform. The automatic clamping and conveying device includes an upper clamping seat and a lower clamping seat. The upper clamping seat has an upper front belt roller and an upper rear belt roller at its front and rear ends, respectively, with an upper conveyor belt wound between them. The lower clamping seat has a lower front belt roller and a lower rear belt roller at its front and rear ends, respectively, with a lower conveyor belt wound between them. Several clamping rollers are spaced apart on the upper and lower clamping seats to increase the holding force of the conveyor belt on the stacked fabric. One clamping roller is rotatably mounted on the upper clamping seat, and another is rotatably mounted on the lower clamping seat. The lower clamping seat is fixedly mounted on the frame along the left and right sides of the first and second platforms. The surface of the lower conveyor belt is flush with the first and second platforms. A lifting drive device is provided between the upper and lower clamping seats for installing and driving the upper clamping seat to move up and down. The first platform has two upper front belt rollers with synchronously rotating first upper gears fixedly mounted on them, and two lower front belt rollers with synchronously rotating first lower gears fixedly mounted on them, with the first upper gears meshing with the first lower gears for transmission. The second platform has two upper rear belt rollers with synchronously rotating second upper gears fixedly mounted on them, and two lower rear belt rollers with synchronously rotating second lower gears fixedly mounted on them, with the second upper gears meshing with the second lower gears for transmission. A first drive shaft for synchronously driving the two lower rear belt rollers is fixedly mounted between the two lower rear belt rollers of the first platform, and a second drive shaft for synchronously driving the two lower front belt rollers is fixedly mounted between the two lower front belt rollers of the second platform. The frame is equipped with a rotation drive device for synchronously driving the first drive shaft and the second drive shaft. Below the needle plate of the sewing machine head is a directional adjustment device for adjusting the sewing trajectory to produce a non-linear sewing trajectory. The directional adjustment device includes a rotating platform and a second mounting platform. The rotating platform consists of an upper rotating plate and a lower rotating plate. The housing of the sewing machine head is fixedly mounted on the upper rotating plate. The second mounting platform is located within the sewing space below the needle plate of the sewing machine head and is fixedly mounted on the frame. Two first slide rails are fixedly mounted parallel to each other in the left-right direction on the second mounting platform. First sliders are slidably mounted on the first slide rails. A first electric lead screw is provided on the first slider. Rotary mounting seats are provided at the front and rear ends of the first electric lead screw. The two rotating mounting seats are respectively fixedly provided on the two first sliders. A positioning block is fixedly provided on the rotating sleeve of the first electric lead screw. A positioning channel is vertically opened from the upper surface of the positioning block. A positioning post with its outer wall in contact with the inner wall of the positioning channel is movably provided in the positioning channel. The top of the positioning post is fixedly provided on the lower surface of the needle plate of the sewing machine head. The sewing center point of the sewing machine head is located on the central axis of the positioning post. The sliding drive device includes two second slide rails, four second sliders, and a second electric lead screw. The two second slide rails are arranged parallel to each other in the left-right direction on the first mounting platform. The second sliders are slidably arranged on the second slide rails in pairs. The lower rotating plate is fixedly arranged on the four second sliders. The second electric lead screw is located below the second mounting platform and between the two second slide rails, and is fixedly arranged on the first mounting platform. The rotating sleeve of the second electric lead screw is fixedly arranged on the lower rotating plate. Using the initial position of the sewing center of the sewing machine head as the origin, the sewing path is positioned and controlled by coordinates, so that the sewing trajectory formed after sewing can be a straight sewing trajectory, a zigzag sewing trajectory, a curved sewing trajectory, or a closed circular sewing trajectory.

2. The automatic clamping sewing equipment according to claim 1, characterized in that: The lifting drive device includes a fixed plate, a lifting plate, and a cylinder. The fixed plate is horizontally fixed to the lower clamping seat, the lifting plate is fixed to the upper clamping seat, the housing of the cylinder is vertically fixed to the upper surface of the lifting plate, and the piston rod of the cylinder passes through the lifting plate and is fixed to the fixed plate. Guide structures are respectively provided on both ends of the fixed plate and the lifting plate.

3. The automatic clamping sewing equipment according to claim 2, characterized in that: The guide structure includes a guide sleeve and a guide rod. The guide sleeve is fixedly inserted into the fixed plate, and the guide rod slides through the inside of the guide sleeve. The top of the guide rod is fixedly disposed on the lower surface of the lifting plate.

4. The automatic clamping sewing equipment according to claim 1, characterized in that: The rotation drive device includes a rotary motor, a three-axis commutator, two linkage shafts, several sprockets, and two chains. The housing of the rotary motor is fixedly mounted on the frame. The input shaft of the three-axis commutator is connected to the rotating shaft of the rotary motor. One end of each of the two linkage shafts is fixedly connected to the two output shafts of the three-axis commutator in the left-right direction, and the other end is rotatably mounted on the frame. Sprockets are fixedly sleeved on both ends of the first drive shaft, the second drive shaft, and the two linkage shafts. The chains are located at both ends of the first drive shaft, the second drive shaft, and the linkage shafts and are wound around the sprockets of the first drive shaft, the second drive shaft, and the linkage shafts.

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