Bottom sewing device for polyethylene film ton bag production
The automatic smoothing of polyethylene film ton bags via conveyor belt and threaded rod structure, combined with ultrasonic sewing machine and infrared positioner, solves the problem of misalignment of the seam bottom caused by manual feeding and smoothing, and achieves efficient and accurate sewing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-03-13
AI Technical Summary
The current production process of polyethylene film ton bags requires manual feeding and smoothing, which leads to misalignment of the seam bottom, low efficiency, and the existing equipment cannot effectively smooth the seam, affecting the sewing quality.
The system employs a combination of first and second conveyor belts, threaded rods, and pressure plates to automatically flatten polyethylene film ton bags. Automatic sewing is achieved using an ultrasonic sewing machine and an infrared positioner, ensuring accurate positioning.
It improves the sewing efficiency and quality of polyethylene film ton bags, reduces wrinkles and sewing misalignment, and enhances production efficiency and product aesthetics.
Smart Images
Figure CN223989822U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic products technology, and in particular to a device for sewing the bottom of polyethylene film ton bags. Background Technology
[0002] Polyethylene film ton bags (also called PE ton bags or polyethylene woven bags) are commonly used for packaging bulk goods such as fertilizers, grains, chemicals, and plastic granules. During the production of polyethylene film ton bags, the bottom of the bag needs to be sewn. Currently, the sewing of some polyethylene film ton bags is still done manually. Manual sewing is not only inefficient but may also result in uneven stitches requiring secondary cutting, affecting the appearance of the polyethylene film ton bag. Existing polyethylene film ton bag sewing devices also require manual feeding and cannot smooth the polyethylene film ton bag, easily leading to misalignment of the sewn bottom, resulting in low sewing efficiency. Therefore, to address these problems, a bottom sewing device for polyethylene film ton bag production is being developed. Utility Model Content
[0003] In order to overcome the shortcomings of existing devices, such as the need for manual feeding, inability to smooth out polyethylene film ton bags, easy misalignment of the bottom of the polyethylene film ton bags, and low bottom sewing efficiency, this utility model provides a bottom sewing device for polyethylene film ton bag production.
[0004] The technical implementation scheme of this utility model is as follows: a device for sewing the bottom of a polyethylene film ton bag, including an installation platform, a side plate installed on the upper surface of the installation platform, an installation plate provided on one side of the side plate, an installation groove opened on the top of the installation plate, an electric push rod provided on the upper surface of the installation groove, a placement plate provided on the top of the electric push rod, and the placement plate being at the same horizontal height as the second conveyor belt, a driving mechanism provided inside the upper part of the side plate, the smoothing mechanism including a side support plate, the side support plate being located on the side of the installation plate, two side support plates being provided, a first conveyor belt being provided between the two side support plates, a second conveyor belt being provided below the first conveyor belt, both the first and second conveyor belts being equipped with motors, the motor of the first conveyor belt being fixedly connected to the top of the side support plate, the motor of the second conveyor belt being fixedly connected to the side wall of the installation groove, and the side support plate being arranged in a "7" shape.
[0005] Optionally, the driving mechanism includes a first slide rod located inside the side plate. A fixing block is provided on the surface of the first slide rod, and a first telescopic rod is provided on one side of the fixing block. A fixing plate is provided at the end of the fixing block away from the inside of the side plate. A second slide rod is provided inside the fixing plate. A connecting block is provided on the surface of the second slide rod, and a second telescopic rod is provided on one side of the second slide rod. A top plate is provided at the end of the connecting block away from the inside of the fixing plate. A third slide rod is provided inside the top plate, and a slider is provided on the surface of the third slide rod. A third telescopic rod is provided on one side of the slider.
[0006] Optionally, one end of the fixing block is located inside the side plate, and the fixing block is slidably connected to the first sliding rod. The two ends of the first telescopic rod are respectively installed inside the top of the side plate and on the side of the fixing block. The slider is slidably connected to the third sliding rod, and the two ends of the third telescopic rod are respectively installed inside the top plate and on the side of the slider.
[0007] Optionally, the device further includes an ultrasonic suture machine disposed on the lower surface of the slider, a suture head disposed on the lower surface of the ultrasonic suture machine, an infrared positioner disposed on one side of the suture head, and the infrared positioner and the suture head being located on the same horizontal line.
[0008] Optionally, the smoothing mechanism further includes a pressure plate located on the upper part of the side support plate near the second conveyor belt. A threaded rod and a spring are provided between the top of the pressure plate and the side support plate, and the threaded rod is rotatably connected to the pressure plate. The threaded rod passes through the side support plate and is threadedly connected to the side support plate. A buffer pad is provided on the lower surface of the pressure plate.
[0009] Optionally, the smoothing mechanism further includes a guide rod located between the mounting groove and the side support plate, the guide rod passing through the pressure plate, and the guide rod being slidably connected to the pressure plate.
[0010] This utility model has the following advantages:
[0011] 1. The first and second conveyor belts can flatten the polyethylene film ton bags. During the flattening process, a rotating threaded rod is set up to rotate inside the side support plate. Since the threaded rod is rotatably connected to the pressure plate, the position of the pressure plate is changed during the rotation of the threaded rod, thereby adapting to the side fixing work of polyethylene film ton bags of different thicknesses. This allows the pressure plate and the buffer pad to smooth the polyethylene film ton bags and transport them to the placement plate surface, reducing the possibility of wrinkles in the polyethylene film ton bags, improving the stitching effect of the device, and increasing the practicality of the device.
[0012] 2. The connecting block is driven to slide on the surface of the second slide rod by the second telescopic rod, so that the top plate can move vertically, thereby allowing the ultrasonic suture machine and suture head to move vertically. At the same time, the slider is pushed to slide on the surface of the third slide rod by the third telescopic rod, so that the ultrasonic suture machine and suture head can move laterally, thereby increasing the flexibility of the device and improving work efficiency.
[0013] 3. The infrared locator installed on the side of the sewing head can determine the position of the polyethylene film ton bag, preventing positional deviation during the sewing process and thus reducing product quality. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This utility model Figure 1 Sectional view of AA.
[0016] Figure 3 This is the front view of the present invention.
[0017] Figure 4 This utility model Figure 1 Enlarged view of section B in the middle.
[0018] Figure 5 This utility model Figure 2 Enlarged view of point C in the middle.
[0019] The meanings of the reference numerals in the attached diagram are as follows: 1. Mounting platform; 2. Side plate; 3. Mounting plate; 4. Top plate; 5. Fixing block; 6. First telescopic rod; 7. First sliding rod; 8. First conveyor belt; 9. Second conveyor belt; 10. Placement plate; 11. Electric push rod; 12. Fixing plate; 13. Second sliding rod; 14. Second telescopic rod; 15. Connecting block; 16. Ultrasonic suture machine; 17. Suture head; 18. Infrared positioner; 19. Third telescopic rod; 20. Slider; 21. Third sliding rod; 22. Side support plate; 23. Motor; 24. Pressure plate; 25. Threaded rod; 26. Buffer pad; 27. Guide rod. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.
[0021] A device for sewing the bottom of a polyethylene film ton bag includes a mounting platform 1. A side plate 2 is mounted on the upper surface of the mounting platform 1. A mounting plate 3 is provided on one side of the side plate 2. A mounting groove is opened on the top of the mounting plate 3. An electric push rod 11 is provided on the upper surface of the mounting groove. A placement plate 10 is provided on the top of the electric push rod 11. The placement plate 10 is at the same horizontal height as the second conveyor belt 9. A drive mechanism is provided inside the upper part of the side plate 2. The smoothing mechanism includes a side support plate 22. The side support plate 2 is located on the side of the mounting plate 3. There are two side support plates 22. A first conveyor belt 8 is provided between the two side support plates 22. A second conveyor belt 9 is provided below the first conveyor belt 8. Both the first conveyor belt 8 and the second conveyor belt 9 are equipped with motors 23. The motor 23 of the first conveyor belt 8 is fixedly connected to the top of the side support plate 22. The motor 23 of the second conveyor belt 9 is fixedly connected to the side wall of the mounting groove. The side support plate 22 is arranged in a "7" shape.
[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the driving mechanism includes a first slide rod 7 located inside the side plate 2. A fixing block 5 is provided on the surface of the first slide rod 7. A first telescopic rod 6 is provided on one side of the fixing block 5. A fixing plate 12 is provided at the end of the fixing block 5 away from the inside of the side plate 2. A second slide rod 13 is provided inside the fixing plate 12. A connecting block 15 is provided on the surface of the second slide rod 13. A second telescopic rod 14 is provided on one side of the second slide rod 13. A top plate 4 is provided at the end of the connecting block 15 away from the inside of the fixing plate 12. A third slide rod 21 is provided inside the top plate 4. A slider 20 is provided on the surface of the third slide rod 21. A third telescopic rod 19 is provided on one side of the slider 20. One end of the fixing block 5 is located inside the side plate 2, and the fixing block 5 is slidably connected to the first sliding rod 7. The two ends of the first telescopic rod 6 are respectively installed inside the top of the side plate 2 and on the side of the fixing block 5. The slider 20 is slidably connected to the third sliding rod 21. The two ends of the third telescopic rod 19 are respectively installed inside the top plate 4 and on the side of the slider 20. An ultrasonic suture machine 16 is provided on the lower surface of the slider 20. A suture head 17 is provided on the lower surface of the ultrasonic suture machine 16. An infrared locator 18 is provided on one side of the suture head 17. The infrared locator 18 and the suture head 17 are located on the same horizontal line.
[0023] It should be noted that the second telescopic rod 14 drives the connecting block 15 to slide on the surface of the second slide rod 13, allowing the top plate 4 to move vertically. This enables the ultrasonic sewing machine 16 and the sewing head 17 to move vertically. At the same time, the third telescopic rod 19 pushes the slider 20 to slide on the surface of the third slide rod 21, allowing the ultrasonic sewing machine 16 and the sewing head 17 to move laterally. This increases the flexibility of the device and improves work efficiency. In addition, the infrared positioner 18 set on the side of the sewing head 17 can determine the position of the polyethylene film ton bag, preventing positional deviation during the sewing process and thus reducing product quality.
[0024] like Figure 2 and Figure 5 As shown, the smoothing mechanism also includes a pressure plate 24, which is located on the upper part of the side support plate 22 near the second conveyor belt 9. A threaded rod 25 and a spring are provided between the top of the pressure plate 24 and the side support plate 22, and the threaded rod 25 is rotatably connected to the pressure plate 24. The threaded rod 25 passes through the side support plate 22 and is threadedly connected to the side support plate 22. A buffer pad 26 is provided on the lower surface of the pressure plate 24. The smoothing mechanism also includes a guide rod 27, which is located between the mounting groove and the side support plate 22. The guide rod 27 passes through the pressure plate 24 and is slidably connected to the pressure plate 24.
[0025] It should be noted that the first conveyor belt 8 and the second conveyor belt 9 can flatten the polyethylene film ton bag. During the flattening process, the rotating threaded rod 25 is set to rotate inside the side support plate 22. Since the threaded rod 25 is rotatably connected to the pressure plate 24, the position of the pressure plate 24 is changed during the rotation of the threaded rod 25, thereby adapting to the side fixing work of polyethylene film ton bags of different thicknesses. This allows the pressure plate 24 and the buffer pad 26 to flatten the polyethylene film ton bag and transport it to the surface of the placement plate 10, reducing the possibility of wrinkles in the polyethylene film ton bag, improving the stitching effect of the device, and increasing the practicality of the device.
[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 invention.
Claims
1. A device for sewing the bottom of polyethylene film ton bags, characterized in that, The application relates to a device for flattening and positioning a workpiece, which comprises a mounting table (1) and a flattening mechanism, the upper surface of the mounting table (1) is provided with a side plate (2), one side of the side plate (2) is provided with a mounting plate (3), the top of the mounting plate (3) is provided with a mounting groove, the upper surface of the mounting groove is provided with an electric push rod (11), the top of the electric push rod (11) is provided with a placing plate (10), the horizontal height of the placing plate (10) is consistent with that of a second conveying belt (9), the inside of the side plate (2) is provided with a driving mechanism, the flattening mechanism comprises side edge supporting plates (22), the side edge supporting plates (22) are arranged on the side of the mounting plate (3), the side edge supporting plates (22) are provided with two first conveying belts (8), the lower side of the first conveying belts (8) is provided with the second conveying belt (9), the first conveying belts (8) and the second conveying belt (9) are provided with motors (23), the motor (23) of the first conveying belt (8) is fixedly connected with the top of the side edge supporting plate (22), the motor (23) of the second conveying belt (9) is fixedly connected with the side wall of the mounting groove, and the side edge supporting plates (22) are arranged in a 7-shaped mode.
2. A device for sewing the bottom of a polyethylene film ton bag according to claim 1, characterized in that, The driving mechanism comprises a first sliding rod (7), the first sliding rod (7) is arranged in the inside of the side plate (2), the surface of the first sliding rod (7) is provided with a fixed block (5), one side of the fixed block (5) is provided with a first telescopic rod (6), one end of the fixed block (5) away from the inside of the side plate (2) is provided with a fixed plate (12), the inside of the fixed plate (12) is provided with a second sliding rod (13), the surface of the second sliding rod (13) is provided with a connecting block (15), one side of the second sliding rod (13) is provided with a second telescopic rod (14), one end of the connecting block (15) away from the inside of the fixed plate (12) is provided with a top plate (4), the inside of the top plate (4) is provided with a third sliding rod (21), the surface of the third sliding rod (21) is provided with a sliding block (20), one side of the sliding block (20) is provided with a third telescopic rod (19).
3. A device for sewing the bottom of a polyethylene film ton bag according to claim 2, characterized in that, One end of the fixed block (5) is arranged in the inside of the side plate (2), and the fixed block (5) is slidably connected with the first sliding rod (7), the two ends of the first telescopic rod (6) are respectively arranged at the top end in the inside of the side plate (2) and the side of the fixed block (5), the sliding block (20) is slidably connected with the third sliding rod (21), and the two ends of the third telescopic rod (19) are respectively arranged at the inside of the top plate (4) and the side of the sliding block (20).
4. A device for sewing the bottom of a polyethylene film ton bag according to claim 3, wherein The lower surface of the sliding block (20) is provided with an ultrasonic suture machine (16), the lower surface of the ultrasonic suture machine (16) is provided with a suture head (17), one side of the suture head (17) is provided with an infrared positioner (18), and the infrared positioner (18) and the suture head (17) are located on the same horizontal line.
5. A device for sewing the bottom of a polyethylene film ton bag according to claim 1, characterized in that, The smoothing mechanism further comprises a pressing plate (24) located on the upper side of the side support plate (22) close to the second conveying belt (9), a threaded rod (25) and a spring are arranged between the top of the pressing plate (24) and the side support plate (22), the threaded rod (25) is rotationally connected with the pressing plate (24), the threaded rod (25) passes through the side support plate (22) and is threadedly connected with the side support plate (22), and the lower surface of the pressing plate (24) is provided with a buffer pad (26).
6. A device for sewing the bottom of a polyethylene film ton bag according to claim 5, wherein The smoothing mechanism further comprises a guide rod (27) located between the mounting groove and the side support plate (22), the guide rod (27) passes through the pressing plate (24), and the guide rod (27) is slidingly connected with the pressing plate (24).