A bag opening machine circulating plate positioning and circulating mechanism

Abstract

The utility model relates to a kind of opening bag machine circulation plate positioning circulation mechanism, including rack, circulation device is arranged on the rack, circulation plate positioning device, bag lip positioning device, folding material mechanism, laser cutting mechanism and sewing mechanism, the circulation device is located in the side of circulation plate positioning device and bag lip positioning device, bag lip positioning device is located above circulation plate positioning device, the circulation device includes three-axis drive mechanism, mounting plate and two first pressure jaw assemblies, the drive end of three-axis drive mechanism is connected with mounting plate, two first pressure jaw assemblies are installed at the both ends of mounting plate, three-axis drive mechanism is used to drive two first pressure jaw assemblies to mount and move circulation plate on rack, the bag lip positioning device includes horizontally moving first cylinder and positioning assembly, and the drive end of first cylinder is connected with positioning assembly. The circulation plate positioning circulation mechanism realizes accurate circulation positioning of circulation plate, improves opening bag processing precision and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bag opening machine technology, and in particular to a bag opening machine circulation plate positioning and circulation mechanism. Background Technology

[0002] During the operation of a bag-opening machine, the circulating plate carries the bag material to be processed and needs to circulate and precisely position itself between different workstations to ensure the accuracy of processes such as bag opening and sewing. Existing circulating plate positioning mechanisms not only have low positioning accuracy, easily leading to bag material processing position deviations and affecting product quality, but also exhibit poor stability during cyclic conveying, with the circulating plate potentially shaking or jamming. Furthermore, they have complex structures, high maintenance costs, and are difficult to adapt to the processing needs of bag materials of different specifications. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bag opening machine circulation plate positioning and circulation mechanism, which realizes precise circulation positioning of the circulation plate and improves the accuracy and efficiency of bag opening processing.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a bag opening machine circulation plate positioning circulation mechanism, including a frame, on which are arranged a circulation device for circulating and conveying the circulation plate, a circulation plate positioning device for positioning the circulation plate, a bag lip positioning device for positioning the bag lip on the circulation plate, a folding mechanism, a laser cutting mechanism and a sewing mechanism. The circulation device is located on one side of the circulation plate positioning device and the bag lip positioning device, and the bag lip positioning device is located above the circulation plate positioning device.

[0005] The circulation device includes a three-axis drive mechanism, a mounting plate, and two first pressure claw assemblies. The drive end of the three-axis drive mechanism is connected to the mounting plate, and the two first pressure claw assemblies are installed at both ends of the mounting plate. The three-axis drive mechanism is used to drive the two first pressure claw assemblies to load and move the circulation plate on the frame.

[0006] In one embodiment, the first pressure claw assembly of the bag-opening machine's circulating plate positioning and circulating mechanism includes a horizontally movable second cylinder and a pressure claw. The driving end of the second cylinder is hinged to one end of the pressure claw, and the two side ends of the pressure claw are hinged to the mounting plate. The second cylinder is used to drive the pressure claw to flip up and down to perform loading and unloading operations on the circulating plate.

[0007] In one embodiment, the bag lip positioning device of the bag opening machine's circulating plate positioning mechanism includes a mounting base, a third cylinder, and a pressure rod. The mounting base is adjustablely mounted on the machine frame. The third cylinder is tilted and mounted on the top of the mounting base. The driving end of the third cylinder is hinged to the pressure rod, and the pressure rod is hinged to the mounting base. A positioning plate is provided on the pressure rod. The third cylinder is used to drive the pressure rod to move the positioning plate to position the circulating plate on the machine frame.

[0008] In one embodiment, the circulation plate of the bag-opening machine circulation plate positioning circulation mechanism is provided with a plurality of positioning holes for positioning and cooperating with the circulation plate positioning device, and the end of the circulation plate near the circulation device is provided with two first hook grooves for positioning and cooperating with the first pressure claw assembly, and the side end of the circulation plate is provided with an L-shaped support plate.

[0009] In one embodiment, the circulating plate positioning device of the bag-opening machine circulating plate positioning mechanism includes several positioning pin assemblies for positioning the circulating plate and a lifting assembly for positioning the fabric on the bag-opening machine. The positioning pin assembly includes a fourth cylinder for lifting and lowering movement and a positioning pin. The fourth cylinder is installed at the bottom of the frame, and the driving end of the fourth cylinder is connected to the positioning pin. The frame is provided with a through hole for the positioning pin to pass through. The fourth cylinder is used to drive the positioning pin to move upward to position the circulating plate.

[0010] In one embodiment, the lifting assembly of the bag-opening machine's circulating plate positioning and circulating mechanism includes a fifth cylinder for lifting and lowering movement and several top blocks. The fifth cylinder is installed at the bottom of the frame, and the driving end of the fifth cylinder is connected to several top blocks. The frame is provided with a second through hole for several top blocks to pass through. The circulating plate is provided with a notch for several top blocks to pass through. The fifth cylinder drives several top blocks to move upward.

[0011] In one embodiment, the three-axis drive mechanism of the bag-opening machine's circulating plate positioning and circulating mechanism includes a sixth cylinder that moves along the X-axis, a linear module that moves along the Y-axis, and a seventh cylinder that moves along the Z-axis. The sixth cylinder is mounted at the bottom of the frame, and the drive end of the sixth cylinder is connected to the linear module. The drive end of the linear module is connected to the seventh cylinder, and the drive end of the seventh cylinder is connected to the mounting plate.

[0012] In one embodiment, the folding mechanism of the bag-opening machine's circulating plate positioning and circulating mechanism includes a pressing device and a folding device. The pressing device includes a material-fixing component and a pressing component. One end of the material-fixing component is provided with two second pressure claw components for mounting and cooperating with the circulating plate. The circulating plate is provided with two second hook grooves for mounting and cooperating with the second pressure claw components. The bottom surface of the support plate of the material-fixing component is provided with a first magnet or a first iron sheet, and the circulating plate is provided with a second magnet or a second iron sheet.

[0013] The beneficial effects of this application are as follows:

[0014] This application provides a circulating plate positioning and circulation mechanism for a bag-opening machine. By incorporating a circulation device, it achieves the cyclical operation of two circulating plates, improving the machine's working efficiency. Simultaneously, by coordinating the circulating plate positioning device and the bag lip positioning device, it achieves the positioning operation of the circulating plate and the fabric, ensuring not only the accuracy of the circulating plate positioning but also the precision of the fabric positioning, thereby improving the sewing accuracy and production quality of the machine. This bag-opening machine's circulating plate positioning and circulation mechanism achieves precise cyclic positioning of the circulating plate, improving the accuracy and efficiency of bag opening processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram from one perspective of the bag-opening machine circulation plate positioning and circulation mechanism according to an embodiment of this application;

[0016] Figure 2 This is a schematic diagram from another perspective of the bag-opening machine circulation plate positioning and circulation mechanism according to an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the circulation device of the bag-opening machine circulation plate positioning circulation mechanism according to an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the bag lip positioning device of the bag opening machine circulation plate positioning circulation mechanism according to an embodiment of this application;

[0019] Figure 5 This is a schematic diagram of the circulation plate positioning device of the circulation plate positioning mechanism of the bag opening machine according to an embodiment of this application;

[0020] in:

[0021] 1. Frame; 2. Circulation device; 3. Circulation plate positioning device; 4. Bag lip positioning device; 5. Folding mechanism; 6. Laser cutting mechanism; 7. Sewing mechanism; 8. Circulation plate; 21. Three-axis drive mechanism; 22. Mounting plate; 23. First pressure claw assembly; 211. Sixth cylinder; 212. Linear module; 213. Seventh cylinder; 231. Second cylinder; 232. Pressure claw; 31. Positioning pin assembly; 32. Lifting assembly; 311. Fourth cylinder 312. Positioning pin; 321. Fifth cylinder; 322. Top block; 41. Mounting base; 42. Third cylinder; 43. Pressure rod; 44. Positioning plate; 51. Pressing device; 52. Folding device; 511. Second pressure claw assembly; 81. Positioning hole; 82. First hook groove; 83. L-shaped support plate; 84. Notch; 85. Second magnet; 86. Second iron sheet; 87. Second hook groove; 100. First circulation plate; 101. Second circulation plate. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, an embodiment of this application provides a bag-opening machine circulation plate positioning and circulation mechanism, including a frame 1. The frame 1 is provided with a circulation device 2 for circulating and conveying the circulation plate 8, a circulation plate positioning device 3 for positioning the circulation plate 8, a bag lip positioning device 4 for positioning the bag lip on the circulation plate 8, a folding mechanism 5, a laser cutting mechanism 6, and a sewing mechanism 7. The circulation device 2 is located on one side of the circulation plate positioning device 3 and the bag lip positioning device 4, and the bag lip positioning device 4 is located above the circulation plate positioning device 3.

[0024] like Figure 2 As shown, the circulation device 2 includes a three-axis drive mechanism 21, a mounting plate 22, and two first pressure claw assemblies 23. The drive end of the three-axis drive mechanism 21 is connected to the mounting plate 22, and the two first pressure claw assemblies 23 are installed at both ends of the mounting plate 22. The three-axis drive mechanism 21 is used to drive the two first pressure claw assemblies 23 to mount and move the circulation plate 8 on the frame 1.

[0025] Specifically, two circulation plates 8 are set on the frame 1, namely the first circulation plate 100 and the second circulation plate 101. The fourth cylinder 311 of the two positioning pin assemblies 31 of the circulation plate positioning device 3 drives the positioning pin 312 to move upward, so that the positioning pin 312 extends out of the frame 1. Then, the first circulation plate 100 is placed on the loading station of the frame 1, so that the two positioning pins 312 extend into the positioning holes 81 of the first circulation plate 100 to position the first circulation plate 100. After the first circulation plate 100 is positioned, the fourth cylinder 311 of the positioning pin assembly 31 drives the positioning pin 312 to move downward and disengage from the positioning holes 81 of the first circulation plate 100. The three-axis drive mechanism 21 of the circulation device 2 drives the two first pressure claw assemblies 23 to hang the two first hook slots 82 of the first circulation plate 100 and move the first circulation plate 100 along the X-axis to the side of the frame 1 close to the circulation device 2. Then, the second circulation plate 101 is placed on the frame 1 and positioned in conjunction with the positioning pin assembly 31 to achieve positioning of the second circulation plate 101. According to requirements, the first cylinder of the bag lip positioning device 4 drives the positioning assembly to move horizontally to adjust the positioning position. The third cylinder 42 of the positioning assembly drives the pressure rod 43 and the positioning plate 44 to be positioned on the second circulation plate 101, forming the positioning position. The fabric is then manually placed on the second circulation plate 101 along the positioning plate 44. Next, the pressing device 51 of the folding mechanism 5 moves above the second circulation plate 101 and the fabric. The second pressing claw assembly 511 of the pressing device 51 is attached to the second hook groove 87 of the second circulation plate 101. The pressing device 51 drives the second circulation plate 101 to move horizontally above the folding device 52 and below the laser cutting mechanism 6. The laser cutting mechanism 6 cuts the fabric, and the folding device 52 folds the fabric. Simultaneously, the circulation device 2 moves the first circulation plate 100 horizontally to the loading station of the frame 1 and positions it to one side of the bag lip positioning device 4. The circulation plate positioning device 3 positions the first circulation plate 100, and the positioning component of the bag lip positioning device 4 moves to the first circulation plate 100 to form a positioning position. The fabric is manually placed on the first circulation plate 100 along the positioning plate 44. The pressing device 51 drives the second circulation plate 101 to move above the first circulation plate 100. The lifting component 32 of the circulation plate positioning device 3 presses and positions the fabric on the second circulation plate 101. The circulation device 2 moves the second circulation plate 101 out from the bottom of the pressing device 51. The pressing device 51 hangs the first circulation plate 100 and the fabric and moves them to one side of the sewing mechanism 7. The sewing mechanism 7 performs the sewing operation. Simultaneously, the circulation device 2 pushes the second circulation plate 101 to the loading station of the frame 1. After the fabric on the first circulation plate 100 is sewn, the circulation device 2 moves to one side of the pressing device 51 and removes the first circulation plate 100 from the bottom of the pressing device 51. This process is repeated to complete the positioning and circulation operation of the circulation plate 8 and the fabric. The folding mechanism 5, the laser cutting mechanism 6, and the sewing mechanism 7 are existing technologies.

[0026] In the above structure, the circulation device 2 enables the cyclic operation of the two circulation plates 8, improving the working efficiency of the equipment. Furthermore, the circulation plate positioning device 3 and the bag lip positioning device 4 work together to achieve the positioning operation of the circulation plates 8 and the fabric, ensuring not only the positioning accuracy of the circulation plates 8 but also the positioning accuracy of the fabric, thereby improving the sewing precision and production quality of the equipment. This bag-opening machine's circulation plate positioning and circulation mechanism achieves precise cyclic positioning of the circulation plates 8, improving the accuracy and efficiency of bag opening processing.

[0027] like Figure 3 As shown, in one embodiment, the first pressure claw assembly 23 of the bag-opening machine's circulating plate positioning and circulating mechanism includes a horizontally movable second cylinder 231 and a pressure claw 232. The driving end of the second cylinder 231 is hinged to one end of the pressure claw 232, and the two side ends of the pressure claw 232 are hinged to the mounting plate 22. The second cylinder 231 is used to drive the pressure claw 232 to rotate up and down to perform loading and unloading operations on the circulating plate 8. The three-axis drive mechanism 21 of the circulating device 2 drives the two first pressure claw assemblies 23 to move towards the circulating plate 8. The second cylinder 231 of the first pressure claw assembly 23 drives the pressure claw 232 to rotate downward around the mounting plate 22, so that the pressure claw 232 is mounted in the first hook groove 82 of the circulating plate 8. When it is necessary to unload the circulating plate 8, the second cylinder 231 drives the pressure claw to rotate upward around the mounting plate 22 to release the circulating plate 8. The three-axis drive mechanism 21 can drive the first pressure claw assembly 23 to circulate and convey the two circulating plates 8. This arrangement improves the conveying efficiency of the circulating plate 8 and increases the production efficiency of the equipment.

[0028] like Figure 4 As shown, in one embodiment, the bag lip positioning device 4 of the bag opening machine's circulating plate positioning mechanism includes a mounting base 41, a third cylinder 42, and a pressure rod 43. The mounting base 41 is adjustablely mounted on the frame 1. The third cylinder 42 is inclinedly mounted on the top of the mounting base 41. The driving end of the third cylinder 42 is hinged to the pressure rod 43, and the pressure rod 43 is hinged to the mounting base 41. A positioning plate 44 is provided on the pressure rod 43. The third cylinder 42 is used to drive the pressure rod 43 to move the positioning plate 44 to position the circulating plate 8 on the frame 1. When the circulating plate 8 is located at the feeding station of the frame 1, the first cylinder drives the positioning component to adjust the positioning position according to the requirements. After the positioning component is adjusted to the correct position, the third cylinder 42 drives the pressure rod 43 to rotate the positioning plate 44 downward around the mounting base 41, so that the positioning plate 44 presses against the circulating plate 8 to form a positioning position, and the fabric can be placed on the circulating plate 8 along the positioning plate 44. This setting enables the positioning of the fabric, improving the positioning accuracy of the fabric, thereby improving the production accuracy and quality of the equipment.

[0029] like Figure 3 and Figure 4As shown, in one embodiment, the circulating plate 8 of the bag-opening machine's circulating plate positioning and circulating mechanism is provided with a plurality of positioning holes 81 for positioning and cooperating with the circulating plate positioning device 3. Two first hook grooves 82 are provided at the end of the circulating plate 8 near the circulating device 2 for positioning and cooperating with the first pressure claw assembly 23. An L-shaped support plate 83 is provided at the side end of the circulating plate 8. The two first hook grooves 82 of the circulating plate 8 achieve positioning and cooperating with the two first pressure claw assemblies 23 of the circulating device 2. The two positioning holes 81 of the circulating plate 8 achieve positioning and cooperating with the two positioning pin assemblies 31. When the pressing device 51 moves the second circulating plate 101 above the first circulating plate 100, the L-shaped support plate 83 on the first circulating plate 100 separates the first circulating plate 100 and the second circulating plate 101, preventing the first circulating plate 100 from causing uneven compression of the fabric on the second circulating plate 101. The positioning holes 81 and the first hook grooves 82 achieve positioning and cooperating with the circulating plate positioning device 3 and the circulating device 2, ensuring the positioning effect and conveying efficiency of the circulating plate 8. The L-shaped support plate 83 is designed to prevent interference between the two circulation plates 8, ensuring the neatness of the fabric.

[0030] like Figure 5 As shown, in one embodiment, the circulating plate positioning device 3 of the bag-opening machine's circulating plate positioning mechanism includes several positioning pin assemblies 31 for positioning the circulating plate 8 and a lifting assembly 32 for positioning the fabric on the bag-opening machine. Each positioning pin assembly 31 includes a fourth cylinder 311 for lifting and lowering movement and a positioning pin 312. The fourth cylinder 311 is installed at the bottom of the frame 1, and its drive end is connected to the positioning pin 312. The frame 1 has a through hole for the positioning pin 312 to pass through. The fourth cylinder 311 drives the positioning pin 312 upward to position the circulating plate 8. The circulating plate positioning device 3 includes two positioning pin assemblies 31. The fourth cylinder 311 drives the positioning pin 312 upward to extend it out of the frame 1 and position the circulating plate 8. The fourth cylinder 311 also drives the positioning pin 312 downward to release the circulating plate 8, facilitating its movement. The positioning pin assembly 31 enables the positioning and releasing operations of the circulation plate 8, improving the positioning efficiency and accuracy of the circulation plate 8.

[0031] like Figure 5As shown, in one embodiment, the lifting assembly 32 of the bag-opening machine's circulating plate positioning and circulating mechanism includes a fifth cylinder 321 for lifting and lowering movement and several top blocks 322. The fifth cylinder 321 is installed at the bottom of the frame 1, and the driving end of the fifth cylinder 321 is connected to the several top blocks 322. The frame 1 is provided with a second through hole for the several top blocks 322 to pass through, and the circulating plate 8 is provided with a notch 84 for the several top blocks 322 to pass through. The fifth cylinder 321 drives the several top blocks 322 to move upward. The driving end of the fifth cylinder 321 is connected to five top blocks 322, and the fifth cylinder 321 drives the five top blocks 322 to pass through the five notches 84 of the circulating plate 8 to press the fabric on the second circulating plate 101 of the pressing device 51. When the second circulating plate 101 is moved out, it prevents the fabric from falling off. The lifting component 32 is designed to press the fabric on the second circulation plate 101 firmly, ensuring the stability and neatness of the fabric and preventing it from loosening and affecting the next step of the operation.

[0032] like Figure 3 As shown, in one embodiment, the three-axis drive mechanism 21 of the bag-opening machine's circulating plate positioning and circulating mechanism includes a sixth cylinder 211 moving along the X-axis, a linear module 212 moving along the Y-axis, and a seventh cylinder 213 moving along the Z-axis. The sixth cylinder 211 is mounted at the bottom of the frame 1. The drive end of the sixth cylinder 211 is connected to the linear module 212, the drive end of the linear module 212 is connected to the seventh cylinder 213, and the drive end of the seventh cylinder 213 is connected to the mounting plate 22. The sixth cylinder 211 drives the linear module 212 and the seventh cylinder 213 to move the first pressure claw assembly 23 along the X-axis, the linear module 212 drives the seventh cylinder 213 to move the first pressure claw assembly 23 along the Y-axis, and the seventh cylinder 213 drives the first pressure claw assembly 23 to perform lifting and lowering movements. This three-axis drive mechanism 21 enables the first pressure claw assembly 23 to move in three axial directions, improving the conveying efficiency of the first pressure claw assembly 23 to the circulating plate 8.

[0033] like Figure 1 and Figure 2As shown, in one embodiment, the folding mechanism 5 of the bag-opening machine's circulating plate positioning and circulating mechanism includes a pressing device 51 and a folding device 52. The pressing device 51 includes a fixing component and a pressing component. One end of the fixing component is provided with two second pressing claw components 511 for engaging with the circulating plate 8. The circulating plate 8 is provided with two second hook grooves 87 for engaging with the second pressing claw components 511. The bottom surface of the support plate of the fixing component is provided with a first iron sheet or a first magnet. The circulating plate 8 is provided with a second magnet 85 or a second iron sheet 86. The second magnet 85 or the second iron sheet 86 is located at the end of the circulating plate 8 away from the second hook grooves 87. When the pressing device 51 moves to above the circulating plate 8 at the feeding station, the second pressing claw components 511 of the fixing component engage with the second hook grooves 87 of the circulating plate 8, and the two first magnets of the support plate of the fixing component attract the two second iron sheets 86 on the circulating plate 8, realizing the pressing, attracting, and moving of the circulating plate 8 by the pressing device 51. The folding device 52 folds the fabric cut by the laser cutting mechanism 6. The second pressure claw assembly 511 enables the mounting of the circulation plate 8, ensuring the stability of the circulation plate 8 during movement and operation. The first iron plate or first magnet enables the adsorption operation between the material fixing assembly and the circulation plate, further ensuring the stability of the circulation plate 8 during movement.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bag-opening machine circulation plate positioning and circulation mechanism, characterized in that, The machine includes a frame (1), on which are provided a circulation device (2) for circulating and conveying two circulation plates (8), a circulation plate positioning device (3) for positioning the circulation plates (8), a bag lip positioning device (4) for positioning the bag lip on the circulation plates (8), a folding mechanism (5), a laser cutting mechanism (6) and a sewing mechanism (7). The circulation device (2) is located on one side of the circulation plate positioning device (3) and the bag lip positioning device (4), and the bag lip positioning device (4) is located above the circulation plate positioning device (3). The circulation device (2) includes a three-axis drive mechanism (21), a mounting plate (22) and two first pressure claw assemblies (23). The drive end of the three-axis drive mechanism (21) is connected to the mounting plate (22), and the two first pressure claw assemblies (23) are installed at both ends of the mounting plate (22). The three-axis drive mechanism (21) is used to drive the two first pressure claw assemblies (23) to load and move the circulation plate (8) on the frame (1).

2. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 1, characterized in that, The first pressure claw assembly (23) includes a horizontally movable second cylinder (231) and a pressure claw (232). The driving end of the second cylinder (231) is hinged to one end of the pressure claw (232), and the two side ends of the pressure claw (232) are hinged to the mounting plate (22). The second cylinder (231) is used to drive the pressure claw (232) to flip up and down to perform loading and unloading operations on the circulation plate (8).

3. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 1, characterized in that, The bag lip positioning device (4) includes a mounting base (41), a third cylinder (42), and a pressure rod (43). The mounting base (41) is adjustablely mounted on the frame (1). The third cylinder (42) is inclinedly mounted on the top of the mounting base (41). The driving end of the third cylinder (42) is hinged to the pressure rod (43). The pressure rod (43) is hinged to the mounting base (41). A positioning plate (44) is provided on the pressure rod (43). The third cylinder (42) is used to drive the pressure rod (43) to drive the positioning plate (44) to position the circulating plate (8) on the frame (1).

4. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 1, characterized in that, The circulation plate (8) is provided with a plurality of positioning holes (81) for positioning and cooperating with the circulation plate positioning device (3). The end of the circulation plate (8) near the circulation device (2) is provided with two first hook grooves (82) for positioning and cooperating with the first pressure claw assembly (23). The side end of the circulation plate (8) is provided with an L-shaped support plate (83).

5. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 1, characterized in that, The circulating plate positioning device (3) includes several positioning pin assemblies (31) for positioning the circulating plate (8) and lifting assemblies (32) for positioning the fabric on the bag opening machine. The positioning pin assembly (31) includes a fourth cylinder (311) for lifting and lowering and a positioning pin (312). The fourth cylinder (311) is installed at the bottom of the frame (1). The driving end of the fourth cylinder (311) is connected to the positioning pin (312). The frame (1) is provided with a through hole for the positioning pin (312) to pass through. The fourth cylinder (311) is used to drive the positioning pin (312) to move upward to position the circulating plate (8).

6. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 5, characterized in that, The lifting assembly (32) includes a fifth cylinder (321) for lifting and lowering and several top blocks (322). The fifth cylinder (321) is installed at the bottom of the frame (1). The driving end of the fifth cylinder (321) is connected to several top blocks (322). The frame (1) is provided with a second through hole for several top blocks (322) to pass through. The circulation plate (8) is provided with a notch (84) for several top blocks (322) to pass through. The fifth cylinder (321) drives several top blocks (322) to move upward.

7. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 1, characterized in that, The three-axis drive mechanism (21) includes a sixth cylinder (211) that moves along the X-axis, a linear module (212) that moves along the Y-axis, and a seventh cylinder (213) that moves along the Z-axis. The sixth cylinder (211) is mounted on the bottom of the frame (1). The drive end of the sixth cylinder (211) is connected to the linear module (212). The drive end of the linear module (212) is connected to the seventh cylinder (213). The drive end of the seventh cylinder (213) is connected to the mounting plate (22).

8. The bag-opening machine circulation plate positioning and circulation mechanism according to claim 1, characterized in that, The folding mechanism (5) includes a pressing device (51) and a folding device (52). The pressing device (51) includes a fixing component and a pressing component. One end of the fixing component is provided with two second pressing claw components (511) for mounting and cooperating with the circulation plate (8). The circulation plate (8) is provided with two second hook grooves (87) for mounting and cooperating with the second pressing claw components (511). The bottom surface of the support plate of the fixing component is provided with a first iron sheet or a first magnet. The circulation plate (8) is provided with a second magnet (85) or a second iron sheet (86).

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