Slotting tool assembly of bag opening machine
By using a modularly designed insert assembly, combined with a lifting platform and an XZ-axis displacement drive platform, the length and position of the insert can be flexibly adjusted, solving the problem of insufficient applicability of inserts in existing technologies and improving operational efficiency and garment pocket quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU WEIMAR AUTOMATION TECH CO LTD
- Filing Date
- 2025-05-17
- Publication Date
- 2026-04-24
AI Technical Summary
The existing bag-opening machine has a fixed blade length, which cannot be used for folding edges of different lengths, resulting in the need to frequently change the blade, making the operation complicated, time-consuming and labor-intensive.
It adopts a modular design including a lifting platform, a horizontal adjustment platform, an XZ axis displacement drive platform, a long-side inserter, and a short-side inserter. By combining the horizontal adjustment platform and the XZ axis displacement drive platform, the length and position of the inserter can be flexibly adjusted to adapt to the folding requirements of different sizes.
The applicability of the insert assembly has been improved, the operational complexity and equipment maintenance costs have been reduced, the accuracy and stability of the hemming process have been ensured, and the quality of garment pockets has been improved.
Smart Images

Figure CN224160834U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bag opening machines, and in particular to a knife insertion assembly for a bag opening machine. Background Technology
[0002] In garment manufacturing, pocket-opening machines are essential auxiliary processing machinery, mainly used to sew pockets into specific locations on the garment. When sewing a pocket, an opening is typically made in the garment first, then the fabric at the opening is folded over, and finally, the pocket fabric is placed inside for sewing. During the opening process, two opposing long folds and two opposing short folds are formed on the garment. Then, a cutting tool on the cutting tool mechanism inserts the long and short folds into the feed openings of the folding plate below, and finally, the folding plate completes the folding action.
[0003] The length of the insert knife in the existing bag opening machine is fixed. One size insert knife is only suitable for folding edges with a similar length range. It cannot be used for folding edges of different lengths. When folding edges of bags of different sizes, insert knives of different sizes need to be installed, which is time-consuming and labor-intensive. Utility Model Content
[0004] To improve the applicability of the insert assembly, this application provides an insert assembly for a bag opener.
[0005] The insert knife assembly of the bag opening machine provided in this application adopts the following technical solution:
[0006] A knife insertion assembly for a bag opening machine includes a lifting platform, a horizontal adjustment platform, two XZ axis displacement drive platforms, a pair of long-side inserts and a pair of short-side inserts;
[0007] The horizontal adjustment platform is mounted on the lifting platform and has a pair of horizontally adjustable movable platforms; the movable platforms are configured to drive the pair of movable platforms to move away from or towards each other.
[0008] The long-side insert includes a left insert and a right insert that can move relative to each other, and the left insert and the right insert are arranged one-to-one on two moving platforms;
[0009] Two XZ-axis displacement drive platforms are set one-to-one on two moving platforms; a pair of short-side inserts are set one-to-one on the XZ-axis displacement drive platforms so as to move along the XZ-axis direction driven by the XZ-axis displacement drive platforms.
[0010] By adopting the above technical solution, the horizontal adjustment platform can drive the two moving stages to move relative to each other along the X-axis. In conjunction with the XZ-axis displacement drive platform to drive the short side inserts in the XZ-axis direction, the length of the two long side inserts and the position of the two short side inserts can be flexibly adjusted to adapt to the requirements of different lengths of folding edges and pocket sizes. There is no need to frequently replace the inserts, which improves the applicability of the insert assembly. At the same time, this modular and adjustable structural design effectively reduces the complexity of operation and the cost of equipment maintenance.
[0011] Preferably, the XZ axis displacement drive platform includes a first cylinder, a first mounting frame, a second cylinder, and a second mounting frame. The first cylinder is fixedly mounted on the corresponding moving platform, and the piston rod of the first cylinder is fixedly mounted on the first mounting frame to drive the first mounting frame to move along the long side of the fabric cut. The second cylinder is fixedly mounted on the first mounting frame, and the piston rod of the second cylinder is vertically downward and fixed on the second mounting frame. The short-side insert is fixedly mounted on the second mounting frame.
[0012] By adopting the above technical solution, the drive assembly consisting of the first cylinder, the first mounting bracket, the second cylinder, and the second mounting bracket achieves precise displacement control of the short-side insert in the XZ axis direction; the first cylinder drives the first mounting bracket to move along the long side of the fabric cut, and the second cylinder drives the second mounting bracket and the short-side insert to rise and fall vertically, so that the short-side insert can accurately insert into the fabric fold and complete the edge-tightening action, ensuring the accuracy and stability of the folding process.
[0013] Preferably, the first cylinder is located on the back of the moving platform, the second cylinder is located on the front side of the moving platform, and both the first mounting bracket and the second mounting bracket are bent.
[0014] By adopting the above technical solution, while ensuring the normal driving function of the short-side inserter, the spatial layout of the inserter assembly is effectively optimized, interference between components is avoided, and the overall structure is more compact and reasonable, making it easier to install, debug and maintain.
[0015] Preferably, the piston rods of the two first cylinders are arranged facing each other.
[0016] By adopting the above technical solution, since there is a gap between the two moving platforms, the piston rod of the first cylinder extends to one side of the gap between the two moving platforms, which can further optimize the spatial layout of the inserting knife assembly.
[0017] Preferably, the bottom end of the short-side insert is bent toward the side away from the long-side insert to form a plug edge.
[0018] By adopting the above technical solution, the structural design can better guide the fabric into the stuffing hole of the folding plate when inserting the fabric folding edge, preventing the fabric from shifting or getting stuck. At the same time, it enhances the fixing effect of the fabric folding edge, makes the folding action smoother, and improves the quality of garment pocket production.
[0019] Preferably, the left insert and the right insert have the same structure, both including an integrally formed fixing part and a plug-in part. The fixing part is fixed to the corresponding moving platform by screws, and at least one side of its front or rear surface is flush with the surface of the fixing part. The fixing parts of the two long-side inserts are arranged on the same plane, and the plug-in parts are parallel and staggered to each other and are fitted together.
[0020] By adopting the above technical solution, no matter how the moving platform is adjusted, the two plug-in parts remain in a close-fitting plug-in state, and the connection between the two plug-in parts is stable, ensuring the consistency of the folded edge and the flatness of the pocket opening.
[0021] Preferably, the horizontal adjustment platform further includes a first motor, a bidirectional lead screw, and two drive frames. The first motor is fixedly mounted on the lifting platform, and the output shaft of the first motor is coaxially fixed on the bidirectional lead screw. The two drive frames are respectively fixed to two movable platforms by screws. The two ends of the bidirectional lead screw are respectively threaded to the two drive frames. The two movable platforms are located below the lifting platform, and the lifting platform has two through-holes for the two drive frames to move.
[0022] By adopting the above technical solution, the distance between the two moving platforms can be precisely adjusted to accommodate the hemming requirements of fabrics of different sizes.
[0023] Preferably, the movable platform and the lifting platform are slidably connected by a slide rail and a slider, and the first mounting bracket and the movable platform are slidably connected by a slide rail and a slider.
[0024] By adopting the above technical solution, the cooperation between the slide rail and the slider makes the sliding between the moving platform and the lifting platform, and between the first mounting bracket and the moving platform more stable and smooth, reduces the frictional resistance during the movement, improves the movement accuracy and response speed of the inserting knife assembly, enhances the durability of the structure, reduces mechanical wear, and extends the service life of the equipment.
[0025] The main technical effects of this utility model are reflected in the following aspects:
[0026] 1. The horizontal adjustment platform of this utility model can drive two moving platforms to move relative to each other along the X-axis direction. In conjunction with the XZ-axis displacement drive platform to drive the short side insert knife in the XZ-axis direction, the length of a pair of long side insert knives and the position of two short side insert knives can be flexibly adjusted to adapt to different lengths of folding edges and pocket size requirements. There is no need to frequently change insert knives, which improves the applicability of the insert knife assembly.
[0027] 2. By setting the insertion part of the long side insert, the two insertion parts of this utility model remain in a close and inserted state no matter how the moving table is adjusted. The connection between the two insertion parts is stable, ensuring the consistency of the folded edge and the flatness of the pocket opening. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the overall structure of the inserter assembly according to an embodiment of this application.
[0029] Figure 2 This is a schematic diagram of the structure of the inserter assembly cover after it is opened according to an embodiment of this application.
[0030] Figure 3 This is a structural schematic diagram of the cover from another angle after it is opened, according to an embodiment of this application.
[0031] Figure 4 This is a schematic diagram of the structure of the long-side insert in an embodiment of this application.
[0032] Explanation of reference numerals in the attached drawings: 61, lifting platform; 611, movable opening; 612, support block; 621, first motor; 622, double-acting lead screw; 623, drive frame; 63, moving platform; 641, long-side insert; 643, left insert; 644, right insert; 651, fixed part; 652, insertion part; 66, short-side insert; 661, ferrule part; 662, first cylinder; 663, first mounting bracket; 664, second cylinder; 665, second mounting bracket; 671, slide rail; 672, slider; 68, cover. Detailed Implementation
[0033] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail to make the technical solution of this application easier to understand and master.
[0034] This application discloses a knife insertion assembly for a bag opening machine.
[0035] Reference Figures 1-4 The inserting knife assembly of a bag opening machine in this embodiment includes a lifting platform 61, a horizontal adjustment platform, two XZ axis displacement drive platforms, a pair of long-side inserting knives 641 and a pair of short-side inserting knives 66.
[0036] Reference Figures 1-4 The horizontal adjustment platform is mounted on the lifting platform 61 and has a pair of horizontally adjustable moving platforms 63; the moving platforms 63 are configured to drive the pair of moving platforms 63 to move away from or towards each other.
[0037] Reference Figures 1-4 The long-side insert knife 641 includes a left insert knife 643 and a right insert knife 644 that can move relative to each other from left to right. The left insert knife 643 and the right insert knife 644 are arranged one-to-one on two moving platforms 63.
[0038] Reference Figures 1-4 Two XZ axis displacement drive platforms are set one-to-one on two moving stages 63; a pair of short-side inserters 66 are set one-to-one on the XZ axis displacement drive platforms so as to move along the XZ axis direction driven by the XZ axis displacement drive platforms.
[0039] Reference Figures 1-4 The X-axis direction is the direction of the long side of the fabric cut, and the Z-axis direction is the vertical direction.
[0040] Reference Figures 1-4 The horizontal adjustment platform can drive two moving stages 63 to move relative to each other along the X-axis. In conjunction with the XZ-axis displacement drive platform to drive the short side inserter 66 in the XZ-axis direction, the length of the two long side inserters 641 and the position of the two short side inserters 66 can be flexibly adjusted to adapt to different lengths of folding edges and pocket size requirements. This eliminates the need for frequent inserter replacements and improves the applicability of the inserter assembly. At the same time, this modular and adjustable structural design effectively reduces the complexity of operation and equipment maintenance costs.
[0041] Reference Figures 1-4 The XZ axis displacement drive platform includes a first cylinder 662, a first mounting bracket 663, a second cylinder 664, and a second mounting bracket 665. The first cylinder 662 is fixedly mounted on the corresponding moving platform 63, and the piston rod of the first cylinder 662 is fixedly mounted on the first mounting bracket 663 to drive the first mounting bracket 663 to move along the long side of the fabric cut. The second cylinder 664 is fixedly mounted on the first mounting bracket 663, and the piston rod of the second cylinder 664 is vertically downward and fixed on the second mounting bracket 665. The short-side insert knife 66 is fixedly mounted on the second mounting bracket 665.
[0042] Reference Figures 1-4 The drive assembly, consisting of the first cylinder 662, the first mounting bracket 663, the second cylinder 664, and the second mounting bracket 665, enables precise displacement control of the short-side insert 66 in the XZ axis direction. The first cylinder 662 drives the first mounting bracket 663 to move along the long side of the fabric cut, while the second cylinder 664 drives the second mounting bracket 665 and the short-side insert 66 to rise and fall vertically, so that the short-side insert 66 can accurately insert into the fabric fold and complete the edge-tightening action, ensuring the accuracy and stability of the folding process.
[0043] Reference Figures 1-4 The first cylinder 662 is located on the back of the moving platform 63, and the second cylinder 664 is located on the front side of the moving platform 63. Both the first mounting bracket 663 and the second mounting bracket 665 are bent.
[0044] Reference Figures 1-4While ensuring the normal driving function of the short-side inserter 66, the spatial layout of the inserter assembly is effectively optimized to avoid interference between components, making the overall structure more compact and reasonable, and facilitating installation, debugging and daily maintenance.
[0045] Reference Figures 1-4 The piston rods of the two first cylinders 662 are positioned directly opposite each other. Since there is a gap between the two moving platforms 63, the piston rods of the first cylinders 662 extend to one side of the gap between the two moving platforms 63, which can further optimize the spatial layout of the insert assembly.
[0046] Reference Figures 1-4 The bottom end of the short side insert 66 is bent toward the side away from the long side insert 641 to form the tucked edge part 661. This structural design can better guide the fabric into the tucked opening of the hem plate when inserting the fabric hem, preventing the fabric from shifting or getting stuck, while enhancing the fixing effect of the fabric hem, making the hem operation smoother, and improving the quality of garment pocket production.
[0047] Reference Figures 1-4 The left inserter 643 and the right inserter 644 have the same structure, both including an integrally formed fixing part 651 and a plugging part 652. The fixing part 651 is fixed to the corresponding moving stage 63 by screws. At least one of its front or rear surfaces is flush with the surface of the fixing part 651. The fixing parts 651 of the two long-side inserters 641 are arranged coplanarly, and the plugging parts 652 are parallel and staggered to each other and are fitted together.
[0048] Reference Figures 1-4 Regardless of how the moving platform 63 is adjusted, the two plug-in parts 652 remain in a close-fitting plug-in state, and the connection between the two plug-in parts 652 is stable, ensuring the consistency of the folded edge and the flatness of the pocket opening.
[0049] Reference Figures 1-4 The horizontal adjustment platform also includes a first motor 621, a bidirectional lead screw 622, and two drive frames 623. The first motor 621 is fixedly mounted on the lifting platform 61, and its output shaft is coaxially fixed to the bidirectional lead screw 622. The two drive frames 623 are respectively fixed to two movable platforms 63 by screws. The two ends of the bidirectional lead screw 622 are threadedly connected to the two drive frames 623. The two movable platforms 63 are located below the lifting platform 61, and the lifting platform 61 has two through-holes 611 for the two drive frames 623 to move. This allows for precise adjustment of the distance between the two movable platforms 63 to accommodate the hemming requirements of fabrics of different sizes.
[0050] Reference Figures 1-4A support block 612 is provided on the lifting platform 61. The other end of the bidirectional lead screw 622, which is away from the first motor 621, is rotatably connected to the support block 612. A cover 68 is fixed on the lifting platform 61 by screws, and the cover 68 covers the bidirectional lead screw 622 and part of the drive frame 623.
[0051] Reference Figures 1-4 The movable platform 63 and the lifting platform 61 are slidably connected by the cooperation of the slide rail 671 and the slider 672, and the first mounting bracket 663 and the movable platform 63 are slidably connected by the cooperation of the slide rail 671 and the slider 672.
[0052] Reference Figures 1-4 The cooperation between the slide rail 671 and the slider 672 makes the sliding between the moving platform 63 and the lifting platform 61, and between the first mounting bracket 663 and the moving platform 63 more stable and smooth, reduces the frictional resistance during the movement, improves the movement accuracy and response speed of the inserting knife assembly, enhances the durability of the structure, reduces mechanical wear, and extends the service life of the equipment.
[0053] Reference Figures 1-4 The overall operation of the inserting knife assembly is as follows: Based on the length of the opening, the positions of the two moving platforms 63 are adjusted via a horizontal adjustment platform, causing the left and right inserting knives 643 and 644 of the long-side inserting knife 641 to take their positions. Then, when the fabric after the bag opening is cut moves directly below the inserting knife assembly, the lifting platform 61 moves down, and the pair of long-side inserting knives 641 insert the two long sides into the material feeding openings of the two folding plates respectively. Then, the piston rod of the second cylinder 664 extends downward, driving the two short-side inserting knives 66 to push the two short sides downward. Then, the piston rod of the first cylinder 662 extends, directly inserting the two short sides into the corresponding folding plates in the horizontal direction.
[0054] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.
Claims
1. A knife insertion assembly for a bag opening machine, characterized in that: It includes a lifting platform (61), a horizontal adjustment platform, and a pair of long-side inserts (641); The horizontal adjustment platform is mounted on the lifting platform (61) and has a pair of horizontally adjustable movable platforms (63); the movable platforms (63) are configured to drive the pair of movable platforms (63) to move away from or towards each other. The long-side insert (641) includes a left insert (643) and a right insert (644) that can move relative to each other from left to right. The left insert (643) and the right insert (644) are arranged one-to-one on two moving platforms (63).
2. The insert knife assembly of a bag opening machine according to claim 1, characterized in that: It also includes two XZ-axis displacement drive platforms and a pair of short-side cutting tools (66). Two XZ-axis displacement drive platforms are set one-to-one on two moving platforms (63); a pair of short-side inserts (66) are set one-to-one on the XZ-axis displacement drive platforms to move along the XZ-axis direction driven by the XZ-axis displacement drive platforms; the XZ-axis displacement drive platform includes a first cylinder (662), a first mounting frame (663), a second cylinder (664) and a second mounting frame (665). The first cylinder (662) is fixedly set on the corresponding moving platform (63), and the piston rod of the first cylinder (662) is fixedly set on the first mounting frame (663) to drive the first mounting frame (663) to move along the long side of the fabric cut. The second cylinder (664) is fixedly set on the first mounting frame (663), and the piston rod of the second cylinder (664) is set vertically downward and fixed on the second mounting frame (665). The short-side inserts (66) are fixedly set on the second mounting frame (665).
3. The insert knife assembly of a bag opening machine according to claim 2, characterized in that: The first cylinder (662) is located on the back of the moving platform (63), and the second cylinder (664) is located on the front side of the moving platform (63). Both the first mounting bracket (663) and the second mounting bracket (665) are bent.
4. The insert knife assembly of a bag opening machine according to claim 3, characterized in that: The piston rods of the two first cylinders (662) are positioned opposite each other.
5. The insert knife assembly of a bag opening machine according to claim 2, characterized in that: The bottom end of the short-side insert (66) is bent toward the side away from the long-side insert (641) to form a lining portion (661).
6. The insert knife assembly of a bag opening machine according to claim 1, characterized in that: The left insert (643) and the right insert (644) have the same structure, both including an integrally formed fixing part (651) and a plug-in part (652). The fixing part (651) is fixed to the corresponding moving stage (63) by screws. At least one side of its front or rear surface is flush with the surface of the fixing part (651). The fixing parts (651) of the two long-side inserts (641) are arranged coplanarly, and the plug-in parts (652) are parallel and staggered to each other and are fitted together.
7. The insert knife assembly of a bag opening machine according to claim 1, characterized in that: The horizontal adjustment platform also includes a first motor (621), a bidirectional lead screw (622), and two drive frames (623). The first motor (621) is fixedly mounted on the lifting platform (61). The output shaft of the first motor (621) is coaxially fixed on the bidirectional lead screw (622). The two drive frames (623) are respectively fixed on the two moving platforms (63) by screws. The two ends of the bidirectional lead screw (622) are respectively threaded to the two drive frames (623). The two moving platforms (63) are located below the lifting platform (61). The lifting platform (61) has two movable openings (611) for the two drive frames (623) to move through.
8. The insert knife assembly of a bag opening machine according to claim 2, characterized in that: The movable platform (63) and the lifting platform (61) are slidably connected by the cooperation of the slide rail (671) and the slider (672), and the first mounting bracket (663) and the movable platform (63) are slidably connected by the cooperation of the slide rail (671) and the slider (672).