Adjustable pressing frame of bag opening machine
By designing adjustable components for the length and width of the pressing frame, the problem of debugging time and cost when switching between different bag sizes in the bag opening machine is solved, achieving automated adaptation and efficient pressing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-11
- Publication Date
- 2026-04-14
AI Technical Summary
Existing bag-opening machines require parts replacement and professional adjustments when switching between different bag sizes, which is time-consuming and increases production costs, and cannot achieve automated adaptation to bags of different shapes and sizes.
An adjustable pressing frame, including a length adjustment component and a width adjustment component, was designed. The pressing frame is automatically adjusted by a cylinder and a linkage assembly to adapt to the shape and size of different pockets.
It achieves automatic adjustment of the clamping frame, improves production efficiency, reduces manual debugging time and cost, has a wider range of applications, and improves clamping efficiency.
Smart Images
Figure CN121853281A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of bag opening machine technology, and specifically relates to an adjustable clamping frame for a bag opening machine. Background Technology
[0002] A pocket opening machine is an automated device used for sewing pockets. It integrates multiple traditional manual processes (such as opening the pocket, folding the edge, and reinforcing the stitching) into one machine through integrated design. It is a specialized device for the processes of opening, folding, and sewing pockets in the garment, bag and other manufacturing industries. It can significantly improve production efficiency, reduce labor costs, and ensure processing accuracy and product consistency.
[0003] When sewing pockets, different garment sizes require different designs and requirements, resulting in pocket shapes, widths, and lengths. Automatic sewing machines must adjust the frame to perfectly fit the pocket's length and width to hold the fabric in place before sewing. A good fit between the presser frame and the pocket shape is crucial for stable operation and meeting quality requirements on an automatic machine. Current technology requires changing parts and technicians to adjust the frame according to the desired pocket size when switching between different pocket sizes, which is time-consuming and impacts production. Furthermore, it necessitates preparing various pocket size adapters, increasing production costs. Therefore, designing an adjustable presser frame for a pocket opening machine is a problem we need to solve. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an adjustable pressing frame for a bag opening machine.
[0005] To achieve the above objectives, the present invention provides an adjustable pressing frame for a bag opening machine, comprising two connecting arms. The outer walls of the two connecting arms are provided with two length adjustment components and two width adjustment components. The outer walls of the two connecting arms are provided with a connecting rod assembly, which is connected to the two width adjustment components and one length adjustment component. The two width adjustment components are fixedly connected between the two length adjustment components. The two length adjustment components, together with the two width adjustment components, form a rectangular profile. One end of each connecting arm is provided with a length adjustment locking component. The outer wall of the length adjustment locking component is provided with a lifting component. One side of the length adjustment component is provided with a length adjustment drive component. The bottom of the length adjustment locking component is provided with a telescopic component and a width adjustment drive component. The length adjustment assembly includes a length adjustment component and a length locking component; The width adjustment assembly includes a width adjustment component and a width locking component; The connecting rod assembly includes two fifth cylinders fixedly installed on the outer walls of two connecting arms. The output shaft ends of the two fifth cylinders are fixedly connected to connecting rods. The ends of the two connecting rods away from the corresponding fifth cylinders are fixedly connected to connecting columns. The outer walls of the two connecting columns are fitted with first grooved connecting rods. The outer walls of the two connecting columns are slidably connected with second grooved connecting rods.
[0006] In the above technical solution, further, the length adjusting component includes two sliders disposed on the outer walls of the two connecting arms. A connecting plate is fixedly mounted on the top of each slider. A first cylinder is fixedly mounted on the top of the connecting plate. A first connecting rod is fixedly connected to the output shaft end of the first cylinder. A first connecting block is fixedly connected to the bottom of the connecting plate. A first small pressing block is fixedly connected to the bottom of the first connecting block. A second connecting block is fixedly connected to the bottom of the first small pressing block. A first ejector is fixedly connected to one side of the first small pressing block. A second ejector is slidably disposed between the first small pressing block and the second connecting block. A sliding groove is provided on both the first and second ejectors. The second ejector is fixedly connected to the outer wall of the first connecting rod. The bottom of the second connecting block is provided with a plurality of second small pressure blocks. A first cylinder is fixedly connected to one end of each of the plurality of second small pressure blocks. A slot is opened on the outer wall of each of the plurality of second small pressure blocks. A pressure rod is provided on the top of the second small pressure block. The outer wall of the pressure rod is fixedly connected with the same number of positioning pieces as the second small pressure blocks. The end of the positioning piece away from the pressure rod is turned outward, and the outer contour of the turned-out edge of the positioning piece matches the inner contour of the slot. The bottom of each of the two connecting plates is fixedly connected with a second connecting rod. The outer wall of each of the two second connecting rods is fixedly connected with a first rack. The two first racks are rotated 180 degrees. A first gear meshes between the two first racks. A support plate is provided at the bottom of the connecting plate.
[0007] In the above technical solution, the length locking component further includes a sleeve sleeved on the outer wall of the first rack, a first plunger fixedly connected to one side of the sleeve, a first air nozzle sleeved on the outer wall of the first plunger, the first air nozzle fixedly installed on one side of the support plate, four guide sleeves fixedly installed on one side of the support plate, the four guide sleeves being divided into upper and lower pairs in pairs, a guide rod fixedly connected to the side of the first connecting block near the corresponding support plate, and the two guide rods being staggered vertically, and the two guide rods being slidably connected inside the upper and lower pairs of guide sleeves respectively, a base plate fixedly installed at the bottom of the sleeve, a second small pressure block being disposed on the top of the base plate, and the pressure rod and the support plate being fixedly connected to the top of the base plate.
[0008] In the above technical solution, the width adjusting component further includes a groove formed at the bottom of the connecting arm. A plurality of second cylinders are inserted into the groove. A third small pressure block is fixedly connected to the outer wall of each of the plurality of second cylinders. A fourth small pressure block is provided on one side of the third small pressure block. A top rod is inserted into the groove. The top rod is close to the third small pressure block. A slide rail is fixedly connected to the outer wall of the top rod. The slide rail is inserted into the interior of the connecting arm. The slider is slidably connected to a top groove formed on one side of the outer wall of the slide rail. The second cylinder is inserted into the interior of the top groove.
[0009] In the above technical solution, the width locking member further includes a locking member fixedly installed on the top of the connecting plate, a second air nozzle is fixedly connected to the top of the locking member, and a second plunger is slidably connected inside the locking member.
[0010] In the above technical solution, the length adjustment locking assembly further includes two third connecting members fixedly connected to the ends of the two connecting arms. Each of the two third connecting members has a slide rail slidably connected to its outer wall. Each of the two slide rails has a first connecting member slidably connected to its outer wall via a slider. Each of the two first connecting members has a first support plate fixedly connected to its bottom. The two first support plates are staggered. A second rack and a third rack are fixedly connected to the top of each of the two first support plates, respectively. A second gear meshes between the second rack and the third rack. A locking block is provided on the top of the second gear. The output shaft of a second cylinder is fixedly connected to the top of the locking block. A second support plate is slidably connected to the bottom of each of the two first support plates.
[0011] In the above technical solution, the lifting assembly further includes a third cylinder fixedly installed on one side of the two first connecting members that are close to each other. The output shaft end of the third cylinder is fixedly connected to a fourth rack. The bottom of the fourth rack is meshed with a gear shaft. The gear shaft is rotatably connected inside the first connecting member. A lifting connecting member is fixedly connected to the outer wall of one end of the gear shaft. The lifting connecting member is rotatably connected to the outer wall of the third connecting member.
[0012] In the above technical solution, the length adjustment drive assembly further includes a pin fixedly installed on the outer wall of one of the first connectors. A pin plate is provided on one side of the pin. A sliding sleeve is fixedly connected inside the pin plate. A lead screw is threadedly connected inside the sliding sleeve. A first power-off locking switch is fixedly connected to one side of the lead screw. A synchronous belt is tensioned on the outer wall of the lead screw. A first toothed rod is tensioned inside the synchronous belt. A first toothed disc meshes with the top of the first toothed rod.
[0013] In the above technical solution, the telescopic component further includes a fifth rack fixedly installed at the bottom of the second support plate, a double-layer gear shaft meshing at the bottom of the fifth rack, a sixth rack meshing at the outer wall of the double-layer gear shaft, and the output shaft of the fourth cylinder fixedly connected to the outer wall of the sixth rack.
[0014] In the above technical solution, the width adjustment drive assembly further includes a second connector disposed at the bottom of the second support plate. A seventh rack is fixedly installed on one side of the second connector. A second toothed rod is engaged with the outer wall of the seventh rack. A second power-off locking switch is fixedly installed at one end of the second toothed rod. A second toothed disc is engaged with the outer wall of the second toothed rod. The second connector is slidably connected to the outer wall of the base plate of the length adjustment assembly near the first connector. A support frame is slidably connected to the outer wall of the second connector. The slide rail is disposed on one side of the support frame. The second toothed rod is rotatably connected to the inside of the support frame. The double-layer gear shaft is rotatably connected to the inside of the support frame.
[0015] Compared with the prior art, the present invention has the following advantages: the pressing range of the pressing frame can be adjusted according to the size of the pocket, so as to press the pockets and fabrics of different sizes, improve the applicability of the pressing frame, eliminate the need for workers to change different pressing frames according to the size of the pocket, and improve the pressing efficiency of the pockets and fabrics. Attached Figure Description
[0016] Figure 1 This is a first-view schematic diagram of the pressure frame structure proposed in this invention; Figure 2 This is a second-view schematic diagram of the pressure frame structure proposed in this invention; Figure 3 This is a schematic diagram of the length adjustment component structure proposed in this invention; Figure 4 This is a first-view exploded view of a partial structure of the length adjustment component proposed in this invention; Figure 5 This is a second-view exploded view of a partial structure of the length adjustment component proposed in this invention; Figure 6 This is an exploded view of the overall structure of the length adjustment component proposed in this invention; Figure 7 This is a schematic diagram of the width adjustment component structure proposed in this invention; Figure 8 The present invention proposes Figure 7 Enlarged view of the A-section structure; Figure 9 This is a schematic diagram of the cooperation between the pressure frame and the driving structure proposed in this invention; Figure 10 This is a first-view schematic diagram of the driving structure proposed in this invention; Figure 11 This is a second-view sectional view of the driving structure proposed in this invention; Figure 12 This is a second-view schematic diagram of the driving structure proposed in this invention; Figure 13 The present invention proposes Figure 12 Enlarged view of the structure of part B.
[0017] In the diagram: 1. Connecting arm; 2. Slider; 3. Connecting plate; 4. First cylinder; 5. First connecting rod; 6. First connecting block; 7. First small pressure block; 8. Second connecting block; 9. First ejector; 10. Second ejector; 11. Second small pressure block; 12. First cylinder; 13. Slot; 14. Pressure rod; 15. Positioning piece; 16. Second connecting rod; 17. First rack; 18. First gear; 19. Sleeve; 20. Support plate; 21. Guide sleeve; 22. Guide rod; 23. Base plate; 24. Slide groove; 25. Second cylinder; 26. Third small pressure block; 27. Fourth small pressure block; 28. Push rod; 29. Top groove; 30. Slide rail; 31. First connecting piece; 32. Second rack; 33. Third rack; 34. Second gear; 35. Locking block; 36. Second cylinder; 37. First support plate; 38. 39. Second support plate; 40. Third cylinder; 41. Fourth rack; 42. Gear shaft; 43. Lifting connector; 44. Pin; 45. Pin plate; 46. Sliding sleeve; 47. Lead screw; 48. First power-off locking switch; 49. Synchronous belt; 50. First belt rack; 51. First belt disc; 52. Fifth rack; 53. Double-layer gear shaft; 54. Sixth rack; 55. Fourth cylinder; 56. Second connector 56. Seventh rack; 57. Second toothed rod; 58. Second power-off locking switch; 59. Second toothed disc; 60. Support frame; 61. Third connecting piece; 62. Slide rail; 63. First air nozzle; 64. First plunger; 65. Locking piece; 66. Second air nozzle; 67. Second plunger; 68. Fifth cylinder; 69. Connecting rod; 70. Connecting column; 71. First grooved connecting rod; 72. Second grooved connecting rod. Detailed Implementation
[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0019] like Figures 1 to 13An adjustable pressing frame for a bag opening machine is shown, comprising two connecting arms 1. The two connecting arms 1 have two length adjustment components and two width adjustment components on their outer walls. A connecting rod assembly is also provided on the outer walls of the two connecting arms 1. The connecting rod assembly is connected to the two width adjustment components and one length adjustment component. The two width adjustment components are fixedly connected between the two length adjustment components. The two length adjustment components, together with the two width adjustment components, form a rectangular outline. A length adjustment locking component is provided at one end of each connecting arm 1. A lifting component is provided on the outer wall of the length adjustment locking component. A length adjustment drive component is provided on one side of the length adjustment component. A telescopic component and a width adjustment drive component are provided at the bottom of the length adjustment locking component. The length adjustment assembly includes a length adjustment component and a length locking component; The width adjustment assembly includes a width adjustment component and a width locking component; The connecting rod assembly includes two fifth cylinders 68 fixedly installed on the outer walls of two connecting arms 1. The output shaft ends of the two fifth cylinders 68 are fixedly connected to connecting rods 69. The ends of the two connecting rods 69 away from the corresponding fifth cylinders 68 are fixedly connected to connecting posts 70. The outer walls of the two connecting posts 70 are fitted with first grooved connecting rods 71. The two first grooved connecting rods 72 are connected to the push rods 28 in the width adjustment assembly. The outer walls of the two connecting posts 70 are slidably connected to second grooved connecting rods 72. The second grooved connecting rods 72 are connected to the ejector 10 on the length adjustment assembly. It should be noted that only one length adjustment assembly is equipped with a first cylinder to drive the second small pressure block 11 to be pushed out, while the second small pressure block 11 on the remaining length adjustment assembly and the third small pressure block 26 on the two width adjustment assemblies are pushed out through the connecting rod assembly; Specifically, firstly, the two fifth cylinders 68 are activated, causing the fifth cylinders 68 to move the connecting column 70 via the connecting rod 69. The moving connecting column 70 slides along the waist-shaped grooves on the first grooved connecting rod 71 and the second grooved connecting rod 72, and drives the first grooved connecting rod 71 and the second grooved connecting rod 72 to move. After the first grooved connecting rod 71 adjusts the width of the width adjustment component via the push rod 28, the third small pressure block 26 that is not fully ejected is ejected. The second grooved connecting rod 72 drives the connected second ejector 10 to eject the corresponding second small pressure block 11, so that the length adjustment component without the first cylinder can adjust the length and eject the second small pressure block 11 that is not fully ejected.
[0020] The length adjusting component includes two sliders 2 disposed on the outer walls of two connecting arms 1. A connecting plate 3 is fixedly mounted on the top of each slider 2. A first cylinder 4 is fixedly mounted on the top of the connecting plate 3. A first connecting rod 5 is fixedly connected to the end of the output shaft of the first cylinder 4. A first connecting block 6 is fixedly connected to the bottom of the connecting plate 3. A first small pressure block 7 is fixedly connected to the bottom of the first connecting block 6. A second connecting block 8 is fixedly connected to the bottom of the first small pressure block 7. A first ejector 9 is fixedly connected to one side of the first small pressure block 7. A second ejector 9 is slidably disposed between the first small pressure block 7 and the second connecting block 8. Part 10, the first ejector 9 and the second ejector 10 are provided with sliding grooves. The second ejector 10 is fixedly connected to the outer wall of the first connecting rod 5. The bottom of the second connecting block 8 is provided with a plurality of second small pressure blocks 11. The outer wall of one end of each of the plurality of second small pressure blocks 11 is fixedly connected with a first cylinder 12. The outer wall of each of the plurality of second small pressure blocks 11 is provided with a slot 13. The top of the second small pressure block 11 is provided with a pressure rod 14. The outer wall of the pressure rod 14 is fixedly connected with a positioning piece 15 in the same number as the second small pressure blocks 11. The end of the positioning piece 15 away from the pressure rod 14 is turned outward. 5. The outer contour of the flange matches the inner contour of the slot 13. A second connecting rod 16 is fixedly connected to the bottom of each of the two connecting plates 3. A first rack 17 is fixedly connected to the outer wall of each of the two second connecting rods 16, and the two first racks 17 are rotated 180 degrees. A first gear 18 meshes between the two first racks 17. A support plate 20 is provided at the bottom of the connecting plate 3. The length locking component includes a sleeve 19 fitted onto the outer wall of the first rack 17. A first plunger 64 is fixedly connected to one side of the sleeve 19. A first air nozzle 63 is fitted onto the outer wall of the first plunger 64. The nozzle 63 is fixedly installed on one side of the support plate 20. Four guide sleeves 21 are fixedly installed on one side of the support plate 20. The four guide sleeves 21 are divided into two pairs, upper and lower. The first connecting block 6 is fixedly connected to the guide rod 22 on the side of the corresponding support plate 20. The two guide rods 22 are staggered vertically and are slidably connected inside the upper and lower pairs of guide sleeves 21 respectively. The bottom plate 23 is fixedly installed at the bottom of the housing 19. The second small pressure block 11 is set on the top of the bottom plate 23. The pressure rod 14 and the support plate 20 are fixedly connected to the top of the bottom plate 23.
[0021] The flange on the positioning piece 15 that matches the slot 13 is used to limit and fix the second small pressure block 11. After the second small pressure block 11 is adjusted and pushed out, the slot 13 on the second small pressure block 11 will be locked on the positioning piece 15 of the pressure rod 14 to limit and fix the second small pressure block 11 after adjustment and pushing out, so that the second small pressure block 11 can carry out subsequent processing steps. The first gear 18 is used to cooperate with the two first racks 17. When one of the connecting plates 3 moves, the first rack 17 on the connecting plate 3 will drive the first gear 18 to rotate, so that the first gear 18 drives the first rack 17 on the other connecting plate 3 to move, so that the two connecting plates 3 can move synchronously, avoiding errors in the movement of the two connecting plates 3 and affecting the adjustment accuracy of the length. Among them, the two guide sleeves 21 and the guide rod 22 are used to improve the stability of the length adjustment component when it moves. When one of the connecting plates moves, it will drive the corresponding guide rod 22 to move together. In turn, the guide rod 22 slides and guides along the inside of the guide sleeve 21, thereby improving the stability of the two connecting plates when they are displaced. This prevents the length adjustment component from shaking when it is displaced, thus avoiding affecting the stability of the length adjustment. Specifically, when the compression length needs to be adjusted according to the size of the pocket, the two connecting plates 3 in the length adjustment component can be controlled to move closer or further apart until the compression requirement of the pocket is met, thus allowing the length adjustment component to adapt to the length of the pocket. During this process, the connecting plate 3 drives the second connecting block 8 and the first ejector 9 to move through the first connecting block 6 and the first small pressing block 7. The connecting plate 3 will then drive the second ejector 10 to follow the second connecting block 8 and the first ejector 9 through the first cylinder 4 and the first connecting rod 5. The first ejector 9 and the second ejector 10 move together, and the movement of the first ejector 9 and the second ejector 10 will drive the corresponding sliding grooves to cooperate and form a staggered sliding groove to guide and squeeze the first cylinder 12 out, so that the first cylinder 12 is squeezed and moved towards the pressure rod 14, which in turn causes the first cylinder 12 to drive the second small pressure block 11 and the slot 13 to move together until the slot 13 is engaged with the positioning piece 15 and then stops. At this time, the second small pressure block 11 is adjusted and ejected and separates from the first ejector 9 and the second ejector 10. After the second small pressure block 11 is completely ejected, it will be with The first small pressing block 7 is parallel and can be used to compress the pocket and fabric in subsequent processes. When the length adjustment component reaches the required compression length, the first cylinder 4 is controlled to work, causing the first cylinder 4 to retract and move the first connecting rod 5. This causes the first connecting rods 5 of the first cylinders 4 on the two connecting plates 3 to move closer together, which in turn causes the first connecting rods 5 to move the second ejector 10 closer together until the length adjustment component reaches the required compression length. During this process, the second ejector 10 will slide along the top outer wall of the second connecting block 8. Until the second connecting block 8 moves to the end of the groove inside the second ejector 10, the second ejector 10 pushes the second small pressing block 11 that has not been ejected out to make up for it. The second ejector 10 then drives the first small pressing block 7 to move through the second connecting block 8, so that the first small pressing block 7 and the ejected second small pressing block 11 cooperate to form a whole, so as to subsequently press and fix the pocket, so as to achieve the effect of adjusting the pressing frame pressing range according to the pocket size, so as to adjust and press the pocket and fabric according to different pocket sizes. Furthermore, after adjusting the compression length, gas can be injected into the first air nozzle 63 through the air tube, causing the first air nozzle 63 to push the first plunger 64 to move. The first plunger 64 then pushes the housing 19 to compress and fix the two first racks 17 and the first gear 18. After the length adjustment component is adjusted, it can be locked to prevent the length of the length adjustment component from changing during subsequent processing, which would affect the compression effect on the pocket.
[0022] The width adjusting component includes a groove 24 at the bottom of the connecting arm 1. Multiple second cylinders 25 are inserted into the groove 24. A third small pressure block 26 is fixedly connected to the outer wall of each of the multiple second cylinders 25. A fourth small pressure block 27 is provided on one side of the third small pressure block 26. A top rod 28 is inserted into the groove 24. The top rod 28 is close to the third small pressure block 26. A slide rail 30 is fixedly connected to the outer wall of the top rod 28. The slide rail 30 is inserted into the connecting arm 1. A top groove 29 is provided on one side of the outer wall of the slide rail 30. The second cylinders 25 are inserted into the top groove 29. The width locking component includes a locking component 65 fixedly installed on the top of the connecting plate 3. A second air nozzle 66 is fixedly connected to the top of the locking component 65. A second plunger 67 is slidably connected inside the locking component 65. Specifically, when it is necessary to adjust the lateral compression length, the width adjustment drive component can be used to control the two length adjustment components to gradually move away from each other and pull the two width adjustment components to extend. During this process, one of the length adjustment components will move relative to the connecting arm 1, causing the slider 2 of this length adjustment component to move through the connected top rod 28. This causes the top rod 28 to gradually disengage from the groove 24 of the connecting arm 1, allowing the top groove 29 on the top rod 28 to press the second cylinder 25, pressing the second cylinder 25 towards the fourth small pressure block 27. This causes the second cylinder 25 to drive the third small pressure block 26 to be pushed out and aligned with the fourth small pressure block 27, thereby achieving the effect of adjusting the lateral compression length. This makes it convenient to use the length adjustment component to adjust the size of the compression structure to the size of the pocket, so as to compress the pocket and the fabric, improve the applicability of the compression structure, and eliminate the need for staff to change different compression structures according to the pocket size requirements, thus improving the compression efficiency of the pocket and the fabric. Furthermore, gas can be injected or extracted into the second air nozzle 66 through the air tube to drive the second plunger 67 inside the locking member 65 to rise or fall, thereby locking or loosening the width adjustment component, locking and fixing the width adjustment component after the width has been adjusted and pressed, or stopping the locking and fixing of the width adjustment component.
[0023] The length adjustment locking assembly includes two third connectors 61 fixedly connected to the ends of two connecting arms 1. The outer walls of the two third connectors 61 are slidably connected to slide rails 62. The outer walls of the two slide rails 62 are slidably connected to first connectors 31 via sliders. The bottoms of the two first connectors 31 are fixedly connected to first support plates 37. The two first support plates 37 are staggered. The tops of the two first support plates 37 are respectively fixedly connected to second racks 32 and third racks 33. A second gear 34 meshes between the second racks 32 and third racks 33. A locking block 35 is provided on the top of the second gear 34. The top of the locking block 35 is fixedly connected to the output shaft of a second cylinder 36. The bottoms of the two first support plates 37 are slidably connected to second support plates 38. The first support plates 37 are slidably connected to the top of the second support plates 38 via guide rails. The length adjustment locking component is used to lock and fix the length adjustment component after the length has been adjusted. Specifically, after the length adjustment component is adjusted to the desired length, the second cylinder 36 can be controlled to extend and push the locking block 35 to press against the top of the second rack 32, the third rack 33, and the second gear 34, thereby limiting and fixing the second rack 32, the third rack 33, and the second gear 34. This, in turn, limits and fixes the first connecting piece 31 that connects the second rack 32 and the third rack 33, and finally limits and fixes the length adjustment component through the third connecting piece 61 and the connecting arm 1.
[0024] The lifting assembly includes a third cylinder 39 fixedly installed on one side of two first connectors 31 that are close to each other. The output shaft end of the third cylinder 39 is fixedly connected to a fourth rack 40. The bottom of the fourth rack 40 is meshed with a gear shaft 41. The gear shaft 41 is rotatably connected inside the first connector 31. A lifting connector 42 is fixedly connected to the outer wall of one end of the gear shaft 41. The lifting connector 42 is rotatably connected to the outer wall of the third connector 61. The lifting assembly is used to lift the pressure frame. Specifically, when it is necessary to raise or lower the pressure frame, the third cylinder 39 can be controlled to work, causing the third cylinder 39 to push the fourth rack 40 to move, which in turn causes the fourth rack 40 to drive the gear shaft 41 to rotate. The rotation of the gear shaft 41 will drive the lifting connector 42 to rotate, allowing the lifting connector 42 to pull the third connector 61 to slide up or down along the outer wall of the slide rail 62. The third connector 61 drives the pressure frame to rise or fall through the connecting arm 1, so as to cooperate with the pressure frame to press the fabric.
[0025] The length adjustment drive assembly includes a pin 43 fixedly installed on the outer wall of one of the first connectors 31. A pin plate 44 is provided on one side of the pin 43. A sliding sleeve 45 is fixedly connected inside the pin plate 44. A lead screw 46 is threadedly connected inside the sliding sleeve 45. A first power-off locking switch 47 is fixedly connected to one side of the lead screw 46. The first power-off locking switch 47 is used to lock and fix the lead screw 46 when it loses transmission. A timing belt 48 is tensioned on the outer wall of the lead screw 46. A first toothed rod 49 is tensioned inside the timing belt 48. A first toothed disc 50 is engaged at the top of the first toothed rod 49. The length adjustment drive component is used to drive the length adjustment component to expand or contract to adapt to pockets of different lengths; Specifically, when the length of the length adjustment component needs to be adjusted, the control pin 43 is inserted into the pin plate 44, and the power source (not shown) connected to the first toothed disc 50 is controlled to rotate the first toothed disc 50. The first toothed disc 50 drives the synchronous belt 48 to rotate through the meshing first toothed rod 49. The synchronous belt 48 then drives the sliding sleeve 45 to move along the length direction of the length adjustment component through the lead screw 46. The sliding sleeve 45 drives the pin 43 to move through the pin plate 44. The movement of the pin 43 will drive one of the first connecting parts 31 to move. The movement of 103 will drive the corresponding connecting arm 1 to move through the slide rail 62 and the third connecting part 61. At the same time, the movement of the first connecting part 31 will drive the second rack 32 to pull the other first connecting part 31 to move towards each other through the third rack 33 and the second gear 34. Finally, the two connecting arms 1 will move closer or further apart, thereby controlling the unfolded length of the length adjustment component to adapt to different sized pockets.
[0026] The telescopic assembly includes a fifth rack 51 fixedly installed at the bottom of the second support plate 38. The bottom of the fifth rack 51 is engaged with a double-layer gear shaft 52. The outer wall of the double-layer gear shaft 52 is engaged with a sixth rack 53. The outer wall of the sixth rack 53 is fixedly connected to the output shaft of the fourth cylinder 54. The telescopic component is used to control the forward and backward movement of the pressure frame, allowing the pressure frame to be moved to the top of the pocket for pressing. Specifically, when it is necessary to control the forward and backward movement of the pressing frame, the fourth cylinder 54 can be controlled to work, causing the fourth cylinder 54 to push the sixth rack 53 to move, which in turn causes the sixth rack 53 to drive the double-layer gear shaft 52 to rotate, causing the double-layer gear shaft 52 to drive the fifth rack 51 to move forward and backward, causing the fifth rack 51 to drive the second support plate 38 of the length adjustment locking assembly to move forward and backward, and finally causing the length adjustment locking assembly to drive the lifting assembly and the pressing frame to move forward and backward, allowing the pressing frame to move to the top of the pocket. The telescopic assembly, in conjunction with the lifting assembly, can move down to the top of the pocket to press it when it is necessary to press it. After the pressed pocket is processed, it can be raised and moved away for placement and replacement of the pocket fabric.
[0027] The width adjustment drive assembly includes a second connector 55 disposed at the bottom of the second support plate 38. A seventh rack 56 is fixedly installed on one side of the second connector 55. A second toothed rod 57 is engaged with the outer wall of the seventh rack 56. A second power-off locking switch 58 is fixedly installed at one end of the second toothed rod 57. The second power-off locking switch 58 is used to lock the second toothed rod 57 that has lost transmission. A second toothed disc 59 is engaged with the outer wall of the second toothed rod 57. The second connector 55 is slidably connected to the outer wall of the base plate 23 of the length adjustment assembly near the first connector 31. A support frame 60 is slidably connected to the outer wall of the second connector 55. The second support plate 38 is slidably connected to the top of the support frame 60 via a guide rail 62 disposed on one side of the support frame 60. The second toothed rod 57 is rotatably connected to the inside of the support frame 60. A double-layer gear shaft 52 is rotatably connected to the inside of the support frame 60. The width adjustment drive component is used to control the width of the width adjustment component to accommodate pockets of different widths. Specifically, the second toothed disc 59 is first rotated by a power source (not shown), which drives the meshing second toothed rod 57 to rotate. The second toothed rod 57 drives the second connecting member 55 to slide along the outer wall of the support frame 60 through the seventh rack 56. This causes the second connecting member 55 to move the connected length adjustment component relative to the other length adjustment component, changing the distance between the two length adjustment components. Consequently, the two length adjustment components pull the width adjustment component to change the unfolded width to accommodate pocket fabrics of different widths.
[0028] Working principle: When the operator needs to adjust the clamping range of the clamping structure according to the size of the pocket, the length adjustment drive component can be used to control the length adjustment component to extend until the clamping length is reached and then stop. During this process, the length adjustment component will push out the second small clamping block 11. At this time, the two first cylinders 4 on the length adjustment component are controlled to work, so that the first cylinders 4 drive the second ejector 10 through the first connecting rod 5 to push out the first small clamping block 7 that has not been fully pushed out to fill the gap. The first small clamping block 7 and the ejected second small clamping block 11 form a whole that is adapted to the clamping length, thereby clamping the pocket and the fabric to achieve the effect of adjusting the clamping length. Then, the width adjustment drive component is controlled to control the width adjustment component to change the width, thereby achieving the effect of adjusting the clamping width. This makes it easy to adjust the size of the clamping structure to the size of the pocket, so as to clamp the pocket and the fabric, improve the applicability of the clamping structure, and eliminate the need for the operator to change different clamping structures according to the size of the pocket, thereby improving the clamping efficiency of the pocket and the fabric.
[0029] 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 in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.
Claims
1. An adjustable clamping frame for a bag opening machine, comprising two connecting arms (1), characterized in that, The outer walls of the two connecting arms (1) are provided with two length adjustment components and two width adjustment components. The outer walls of the two connecting arms (1) are provided with a connecting rod assembly. The connecting rod assembly is connected to the two width adjustment components and one length adjustment component. The two width adjustment components are fixedly connected between the two length adjustment components. The two length adjustment components cooperate with the two width adjustment components to form a rectangular outline. One end of the two connecting arms (1) is provided with a length adjustment locking component. The outer wall of the length adjustment locking component is provided with a lifting component. One side of the length adjustment component is provided with a length adjustment drive component. The bottom of the length adjustment locking component is provided with a telescopic component and a width adjustment drive component. The length adjustment assembly includes a length adjustment component and a length locking component; The width adjustment assembly includes a width adjustment component and a width locking component; The connecting rod assembly includes two fifth cylinders (68) fixedly installed on the outer walls of two connecting arms (1). The output shaft ends of the two fifth cylinders (68) are fixedly connected to connecting rods (69). The ends of the two connecting rods (69) away from the corresponding fifth cylinders (68) are fixedly connected to connecting columns (70). The outer walls of the two connecting columns (70) are fitted with first grooved connecting rods (71). The outer walls of the two connecting columns (70) are slidably connected with second grooved connecting rods (72).
2. The adjustable pressing frame of a bag opening machine according to claim 1, characterized in that, The length adjusting component includes two sliders (2) disposed on the outer walls of two connecting arms (1). A connecting plate (3) is fixedly installed on the top of each slider (2). A first cylinder (4) is fixedly installed on the top of the connecting plate (3). A first connecting rod (5) is fixedly connected to the output shaft end of the first cylinder (4). A first connecting block (6) is fixedly connected to the bottom of the connecting plate (3). A first small pressure block (7) is fixedly connected to the bottom of the first connecting block (6). A second connecting block (8) is fixedly connected to the bottom of the first small pressure block (7). A first ejector (9) is fixedly connected to one side of the first small pressure block (7). A second ejector (10) is slidably disposed between the first small pressure block (7) and the second connecting block (8). A groove is provided on the first ejector (9) and the second ejector (10). The second ejector (10) is fixedly connected to the outer wall of the first connecting rod (5). A groove is provided on the bottom of the second connecting block (8). Multiple second small pressure blocks (11) are provided. A first cylinder (12) is fixedly connected to the outer wall of one end of each of the multiple second small pressure blocks (11). A slot (13) is provided on the outer wall of each of the multiple second small pressure blocks (11). A pressure rod (14) is provided on the top of each second small pressure block (11). A positioning piece (15) of the same number as the second small pressure block (11) is fixedly connected to the outer wall of the pressure rod (14). The end of the positioning piece (15) away from the pressure rod (14) is turned outward, and the outer contour of the turned edge of the positioning piece (15) is adapted to the inner contour of the slot (13). A second connecting rod (16) is fixedly connected to the bottom of each of the two connecting plates (3). A first rack (17) is fixedly connected to the outer wall of each of the two second connecting rods (16). The two first racks (17) are rotated at 180 degrees. A first gear (18) meshes between the two first racks (17). A support plate (20) is provided at the bottom of the connecting plate (3).
3. The adjustable clamping frame of a bag opening machine according to claim 2, characterized in that, The length locking component includes a sleeve (19) fitted on the outer wall of the first rack (17). A first plunger (64) is fixedly connected to one side of the sleeve (19). A first air nozzle (63) is fitted on the outer wall of the first plunger (64). The first air nozzle (63) is fixedly installed on one side of the support plate (20). Four guide sleeves (21) are fixedly installed on one side of the support plate (20). The four guide sleeves (21) are divided into two pairs, upper and lower. A guide rod (22) is fixedly connected to the side of the first connecting block (6) near the corresponding support plate (20). The two guide rods (22) are staggered vertically. The two guide rods (22) are slidably connected inside the upper and lower pairs of guide sleeves (21). A base plate (23) is fixedly installed at the bottom of the sleeve (19). The second small pressure block (11) is set on the top of the base plate (23). The pressure rod (14) and the support plate (20) are fixedly connected to the top of the base plate (23).
4. The adjustable clamping frame of a bag opening machine according to claim 1, characterized in that, The width adjustment component includes a groove (24) at the bottom of the connecting arm (1). Multiple second cylinders (25) are inserted into the groove (24). A third small pressure block (26) is fixedly connected to the outer wall of each of the multiple second cylinders (25). A fourth small pressure block (27) is provided on one side of the third small pressure block (26). A top rod (28) is inserted into the groove (24). The top rod (28) is close to the third small pressure block (26). A slide rail (30) is fixedly connected to the outer wall of the top rod (28). The slide rail (30) is inserted into the connecting arm (1). The slider (2) is slidably connected to a top groove (29) on one side of the outer wall of the slide rail (30). The second cylinder (25) is inserted into the top groove (29).
5. The adjustable pressing frame of a bag opening machine according to claim 4, characterized in that, The width locking component includes a locking component (65) fixedly installed on the top of the connecting plate (3), a second air nozzle (66) fixedly connected to the top of the locking component (65), and a second plunger (67) slidably connected inside the locking component (65).
6. The adjustable clamping frame of a bag-opening machine according to claim 1, characterized in that, The length adjustment locking assembly includes two third connectors (61) fixedly connected to the ends of the two connecting arms (1). The outer walls of the two third connectors (61) are slidably connected to slide rails (62). The outer walls of the two slide rails (62) are slidably connected to first connectors (31) via sliders. The bottoms of the two first connectors (31) are fixedly connected to first support plates (37). The two first support plates (37) are staggered. The tops of the two first support plates (37) are respectively fixedly connected to second racks (32) and third racks (33). A second gear (34) meshes between the second rack (32) and the third rack (33). A locking block (35) is provided on the top of the second gear (34). The top of the locking block (35) is fixedly connected to the output shaft of a second cylinder (36). The bottoms of the two first support plates (37) are slidably connected to second support plates (38).
7. The adjustable clamping frame of a bag opening machine according to claim 6, characterized in that, The lifting assembly includes a third cylinder (39) fixedly installed on one side of the two first connectors (31) close to each other. The output shaft end of the third cylinder (39) is fixedly connected to a fourth rack (40). The bottom of the fourth rack (40) is meshed with a gear shaft (41). The gear shaft (41) is rotatably connected inside the first connector (31). One end of the gear shaft (41) is fixedly connected to a lifting connector (42). The lifting connector (42) is rotatably connected to the outer wall of the third connector (61).
8. The adjustable clamping frame of a bag opening machine according to claim 6, characterized in that, The length adjustment drive assembly includes a pin (43) fixedly installed on the outer wall of one of the first connectors (31). A pin plate (44) is provided on one side of the pin (43). A sliding sleeve (45) is fixedly connected inside the pin plate (44). A lead screw (46) is threadedly connected inside the sliding sleeve (45). A first power-off locking switch (47) is fixedly connected on one side of the lead screw (46). A timing belt (48) is tensioned on the outer wall of the lead screw (46). A first toothed rod (49) is tensioned inside the timing belt (48). A first toothed disc (50) meshes with the top of the first toothed rod (49).
9. The adjustable clamping frame of a bag opening machine according to claim 6, characterized in that, The telescopic assembly includes a fifth rack (51) fixedly installed at the bottom of the second support plate (38), the bottom of the fifth rack (51) meshing with a double-layer gear shaft (52), the outer wall of the double-layer gear shaft (52) meshing with a sixth rack (53), and the outer wall of the sixth rack (53) fixedly connected to the output shaft of the fourth cylinder (54).
10. The adjustable clamping frame of a bag-opening machine according to claim 6, characterized in that, The width adjustment drive assembly includes a second connector (55) disposed at the bottom of the second support plate (38). A seventh rack (56) is fixedly installed on one side of the second connector (55). A second toothed rod (57) is engaged on the outer wall of the seventh rack (56). A second power-off locking switch (58) is fixedly installed at one end of the second toothed rod (57). A second toothed disc (59) is engaged on the outer wall of the second toothed rod (57). The second connector (55) is slidably connected to the outer wall of the base plate (23) of the length adjustment assembly near the first connector (31). A support frame (60) is slidably connected to the outer wall of the second connector (55). A slide rail (62) is disposed on one side of the support frame (60). The second toothed rod (57) is rotatably connected to the inside of the support frame (60). The double-layer gear shaft (52) is rotatably connected to the inside of the support frame (60).