Automatic ring dismounting structure

Abstract

The utility model relates to an automatic ring dismounting structure which comprises a working table, a cover plate is arranged on the upper side of the working table, a material moving channel is formed between the cover plate and the working table, and the cover plate is provided with a first through hole and a second through hole. The material frame is used for placing the membrane expanding ring to be disassembled; the splitting mechanism is arranged at the position of the second through hole and is used for splitting the inner ring and the outer ring of the membrane expansion ring; the third through hole is formed in the lower side of the second through hole of the workbench, and the inner ring and the outer ring which are split move to the lower side of the workbench through the third through hole; and the material pushing mechanism is used for moving the film expanding rings, the inner rings and the outer rings out, pushing the stacked film expanding rings to the lower side of the splitting mechanism in sequence at the position of the material moving channel, separating the inner rings from the outer rings under the action of the splitting mechanism, and moving the inner rings and the outer rings out at the position of the third through hole, so that the full-automatic splitting process of the film expanding rings is completed, the splitting efficiency of the film expanding rings is improved, and the labor intensity of workers is reduced. The inner ring and the outer ring which are split are assembled and used again according to the original assembly relation, and the inner ring and the outer ring are used in the same group in multiple times of use.

Description

Technical Field

[0001] This utility model relates to the field of chip sorting equipment, and in particular to an automatic ring-removal structure. Background Technology

[0002] In the post-processing of LED chips, the chips need to be sorted into different grades. To sort the chips, the blue film on which the chips are placed must be expanded with an expansion ring before being put into the sorting machine. After the sorting machine completes its work, the expansion ring needs to be removed, the sorted blue film removed, a new blue film installed, and then sorted again.

[0003] The film expansion ring consists of an inner ring and an outer ring, with the blue film sandwiched between them. During film expansion, the inner and outer rings are compressed very tightly, making it difficult for operators to disassemble manually, resulting in low disassembly efficiency. Furthermore, the inner and outer rings may deform during prolonged use. If the film expansion rings are disassembled uniformly, the inner and outer rings are collected separately after disassembly. When they need to be assembled into film expansion rings again, the inner and outer rings are randomly selected, which may lead to mismatch due to deformation, affecting normal production. Utility Model Content

[0004] Therefore, it is necessary to provide an automatic ring-breaking structure to address the problems in the existing technology.

[0005] An automatic ring-removal structure is characterized by including a worktable, a cover plate provided on the upper side of the worktable, a material transfer channel being formed between the cover plate and the worktable, and the cover plate being provided with a first through hole and a second through hole;

[0006] The material rack is set on the upper side of the first through hole of the cover plate and is used to place the film expansion ring to be disassembled. The film expansion ring at the material rack position moves to the material transfer channel position through the first through hole.

[0007] The disassembly mechanism is located at the second through hole position and is used to separate the inner ring and outer ring of the expansion ring.

[0008] The third through hole is located below the second through hole on the worktable. The disassembled inner and outer rings are moved to the lower side of the worktable through the third through hole.

[0009] The pushing mechanism is used to move the expanding ring in the material transfer channel from the first through hole position to the second through hole position, and to remove the inner ring and outer ring that have moved to the lower side of the worktable after passing through the third through hole position.

[0010] In one embodiment, the splitting mechanism includes a support plate structure and a pressure-dividing structure. Both the support plate structure and the pressure-dividing structure are provided in two sets, located on both sides of the second through hole. The support plate structure is used to support the outer ring of the expansion ring, and the pressure-dividing structure is located on the upper side of the first through hole to separate the inner ring of the expansion ring from the outer ring.

[0011] In one embodiment, the pallet structure includes a pallet cylinder disposed outside the second through hole. The piston rod of the pallet cylinder is connected to a support block. The support block has a first step and a second step with stepped distribution. The first step is flush with the material transfer channel, and the second step is set lower than the first step. The second step is close to the axis of the third through hole. When the expanding ring moves to the second channel position, the outer ring of the expanding ring abuts against the first step, and the inner ring of the expanding ring projects downward to the second step position. When the pressure dividing structure separates the inner ring from the outer ring, the inner ring moves to the second step position. When the support block moves outward under the action of the pallet cylinder, the outer ring at the first step position moves to the second step position.

[0012] In one embodiment, the workbench is provided with a receiving groove communicating with the third through hole. There are two receiving grooves, located on both sides of the third through hole, and the first step and the second step of the support block move within the receiving groove.

[0013] In one embodiment, the pressure-dividing structure includes a pressure-dividing cylinder, which is fixed to the upper side of the cover plate. The piston rod of the pressure-dividing cylinder is connected to a pressure-dividing rod, which moves up and down within the second through hole. When the film-removing ring moves to the position of the second through hole, the pressure-dividing rod moves downward under the action of the pressure-dividing cylinder and abuts against the inner ring of the film-expanding ring.

[0014] In one embodiment, the splitting mechanism further includes a membrane removal structure for removing the membrane between the inner and outer rings.

[0015] In one embodiment, the film removal structure includes a film removal cylinder fixed to the upper side of the worktable by a bracket, the piston rod of the film removal cylinder being connected to a vertical rod located above the center of the third through hole.

[0016] In one embodiment, a connecting block is provided on the lower side of the vertical rod, the connecting block is provided with a plurality of connecting grooves around the axis of the vertical rod, the connecting rod is provided with an inclined rod at the position of the connecting groove, and a pressure roller is provided on the lower side of the inclined rod.

[0017] In one embodiment, the feeding mechanism includes an infeed structure and an outfeed structure. The infeed structure includes an infeed cylinder, the piston rod of which is connected to a feeding push block. The feeding push block moves within the material transfer channel, and the front side of the feeding push block is provided with an arc-shaped portion.

[0018] In one embodiment, the ring ejection structure includes an ejection cylinder disposed at the bottom of the worktable. The piston rod of the ejection cylinder is connected to an ejection pusher block. The bottom of the worktable is also provided with two ejection guide blocks, which together with the worktable form an ejection guide groove. The ejection pusher block is used to eject the inner or outer ring that has fallen to the second step position through the ejection guide groove to the outside of the worktable.

[0019] The aforementioned automatic ring-separation structure, under the action of the pushing mechanism, sequentially pushes the stacked film-expanding rings to the underside of the separation mechanism at the material transfer channel. Under the action of the separation mechanism, the inner and outer rings are separated and moved out at the third through hole, thereby completing the fully automatic separation process of the film-expanding rings and improving the separation efficiency of the film-expanding rings. At the same time, the separated inner and outer rings are reassembled and used according to the original assembly relationship, thus ensuring that the inner and outer rings are used in the same group in multiple uses and can be matched even if deformation occurs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the automatic ring-removing structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the bottom structure of the automatic ring-removing structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the bottom structure of the automatic ring-removing structure of this utility model;

[0023] Figure 4 for Figure 1 Enlarged view of the structure at point A in the middle;

[0024] Figure 5 for Figure 2 Enlarged view of the structure at point B;

[0025] Among them, 1. workbench; 11. third through hole; 12. receiving groove;

[0026] 2. Cover plate; 23. Material transfer channel; 21. First through hole; 22. Second through hole;

[0027] 3. Material rack;

[0028] 4. Disassembly mechanism; 41. Pallet structure; 411. Pallet cylinder; 412. Pallet block; 413. First step; 414. Second step;

[0029] 42. Pressure dividing structure; 421. Pressure dividing cylinder; 422. Pressure dividing rod;

[0030] 43. Membrane removal structure; 431. Membrane removal cylinder; 432. Vertical rod; 433. Connecting block; 434. Inclined rod; 435. Pressure roller;

[0031] 5. Material pushing mechanism; 51. Infeed ring pushing structure; 511. Pushing cylinder; 512. Feeding push block;

[0032] 52. Outgoing ring ejection structure; 521. Ejection cylinder; 522. Discharge push block; 523. Discharge guide block. Detailed Implementation

[0033] To make the above-mentioned objects, 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. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0034] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figures 1 to 5 As shown, an automatic ring-removal structure is characterized by including a workbench 1, a cover plate 2 on the upper side of the workbench 1, a material transfer channel 23 being formed between the cover plate 2 and the workbench 1, and the cover plate 2 having a first through hole 21 and a second through hole 22.

[0037] The material rack 3 is set on the upper side of the first through hole 21 of the cover plate 2 and is used to place the film expansion ring to be disassembled. The film expansion ring at the material rack 3 position moves to the material transfer channel 23 position through the first through hole 21.

[0038] The splitting mechanism 4 is located at the second through hole 22 and is used to split the inner ring and outer ring of the expansion ring.

[0039] The third through hole 11 is located below the second through hole 22 of the workbench 1. The disassembled inner ring and outer ring are moved to the lower side of the workbench 1 through the third through hole 11.

[0040] The pushing mechanism 5 is used to move the expanding ring in the material transfer channel 23 from the position of the first through hole 21 to the position of the second through hole 22, and to remove the inner ring and outer ring that have been moved to the lower side of the worktable 1 through the position of the third through hole 11.

[0041] Under the action of the pushing mechanism 5, the stacked film expansion rings are pushed sequentially to the lower side of the splitting mechanism 4 at the transfer channel 23. Under the action of the splitting mechanism 4, the inner ring and outer ring are separated and moved out at the third through hole 11, thereby completing the fully automatic splitting process of the film expansion rings and improving the splitting efficiency of the film expansion rings. At the same time, the split inner ring and outer ring are reassembled and used according to the original assembly relationship, so as to ensure that the inner ring and outer ring are used in the same group in multiple uses, and can be matched even if deformation occurs.

[0042] In order to separate the inner and outer rings of the expanding film ring, in this embodiment, the separation mechanism 4 includes a support plate structure 41 and a pressure dividing structure 42. Both the support plate structure 41 and the pressure dividing structure 42 are provided in two sets, located on both sides of the second through hole 22. The support plate structure 41 supports the outer ring of the expanding film ring, and the pressure dividing structure 42 is located above the first through hole 21 and is used to separate the inner and outer rings of the expanding film ring. In the initial state, the support plate structure 41 supports the outer ring. That is, under the action of the pushing structure, the expanding film ring with separation first moves to the position of the support plate structure 41, then the support plate structure 41 supports the outer ring, and the pressure dividing structure 42 presses down the inner ring, thus separating the inner and outer rings.

[0043] Specifically, the pallet structure 41 includes a pallet cylinder 411 located outside the second through hole 22. The piston rod of the pallet cylinder 411 is connected to a support block 412. The support block 412 has a stepped first step 413 and a second step 414. The first step 413 is flush with the material transfer channel 23, and the second step 414 is lower than the first step 413. The second step 414 is located near the axis of the third through hole 11. When the expanding ring moves to the second channel position, the outer ring of the expanding ring abuts against the first step 413, and the inner ring of the expanding ring projects downward to the position of the second step 414. When the pressure dividing structure 42 separates the inner ring from the outer ring, the inner ring moves to the position of the second step 414. When the support block 412 moves outward under the action of the pallet cylinder 411, the outer ring at the position of the first step 413 moves to the position of the second step 414.

[0044] Under the action of the pallet cylinder 411, the support block 412 moves. During this movement, both support blocks 412 move simultaneously toward or away from the axis of the second through hole 22, thus supporting the outer or inner ring of the expanding film ring. At this time, the pallet includes a stepped first step 413 and a stepped second step 414. The second step 414 is at a lower position and close to the axis of the second through hole 22, while the first step 413 is flush with the transfer channel 23, meaning the second step 414 is lower than the transfer channel 23. Under the action of the pushing mechanism 5, the expanding film ring to be separated moves through the transfer channel 23 to the position of the first step 413. When positioned, the outer ring of the expanding film ring is located above the first step 413, while the inner ring located inside the outer ring will not contact the first step 413. At this time, the pressure-dividing structure 42 at the upper position of the second channel acts on the inner ring, that is, presses the inner ring downward, which can make the inner ring move downward, so that the inner ring falls out from the inside of the outer ring. Since the inner ring of the expanding film ring is projected downward to the position of the second step 414 at this time, the inner ring that falls out just lands at the position of the second step 414 (through the third through hole 11 of the worktable 1). In this way, the second step 414 can be used to receive the inner ring, and then under the action of the pushing structure, the inner ring is pushed out from the position of the second step 414 to the outside of the worktable 1.

[0045] After the inner ring is pushed out, the pallet is moved outward by the pallet cylinder 411. At this time, the distance between the two first steps 413 increases, so the outer ring located on the upper side of the first step 413 falls to the position of the second step 414. Then, under the action of the pushing structure, the outer ring is pushed out to the outside of the worktable 1. At this time, under the action of the pallet structure 41 and the pressure dividing structure 42, the separation process of the inner ring and the outer ring is completed. After separation, both are pushed out to the outside of the worktable 1 at the position of the second step 414. In this way, the subsequent process only needs one corresponding structure to receive the inner ring and the outer ring, thereby simplifying the receiving structure of the subsequent process.

[0046] Since both the inner and outer rings fall to the lower side of the workbench 1 through the third through hole 11, requiring the support plate to move back and forth within the third through hole 11, in this embodiment, the workbench 1 is provided with a receiving groove 12 communicating with the third through hole 11. Two receiving grooves 12 are provided, located on either side of the third through hole 11. The first step 413 and the second step 414 of the support block 412 move within the receiving groove 12. At this time, the receiving groove 12 is located on both sides of the third through hole 11, so the support plate is also located on both sides of the third through hole 11. When the first step 413 and the second step 414 move within the receiving groove 12, they are positioned just outside the third through hole 11, allowing the separated inner and outer rings to fall through the third through hole 11 to the lower side of the workbench 1.

[0047] The pressure-dividing structure 42 acts on the inner ring of the film-expanding plate, thereby separating the inner ring from the outer ring. In this embodiment, the pressure-dividing structure 42 includes a pressure-dividing cylinder 421, which is fixed on the upper side of the cover plate 2. The piston rod of the pressure-dividing cylinder 421 is connected to a pressure-dividing rod 422. The pressure-dividing rod 422 moves up and down within the second through hole 22. When the film-removing ring moves to the position of the second through hole 22, the pressure-dividing rod 422 moves downward under the action of the pressure-dividing cylinder 421 and abuts against the inner ring of the film-expanding ring. The pressure-dividing cylinder 421 is fixed on the upper side of the cover plate 2, near the second through hole 22. Under the action of the pressure-dividing cylinder 421, the pressure-dividing rod 422 moves up and down. At this time, the pressure-dividing rod 422 is on the upper side of the inner ring when it moves to the position of the first step 413. When the pressure-dividing rod 422 moves down, it can press down on the inner ring, while the outer ring abuts through the first step 413, thereby separating the inner ring from the outer ring and completing the separation of the inner ring and the outer ring.

[0048] At this time, in order to ensure the accuracy of the position of the expanding ring during the splitting process, the width of the transfer channel 23 is adapted to the outer diameter of the expanding ring (the width of the transfer channel 23 is slightly larger than the outer diameter of the expanding ring). In this way, the expanding ring can move within the transfer channel 23. At the same time, in the initial state, the distance between the upper sidewalls of the two first steps 413 is the same as the width of the transfer channel 23. In this way, when the expanding ring moves to the position of the second through hole 22, under the limiting action of the upper sidewall of the first step 413, the expanding ring, the second through hole 22, and the third through hole 11 are coaxially distributed. This ensures that when the expanding ring moves to the position of the second through hole 22, when the pressure dividing cylinder 421 controls the pressure dividing rod 422 to move downward, it acts on the upper side of the inner ring, thereby ensuring that the inner ring can be stably pressed down.

[0049] After the film expansion machine expands the film, the expansion ring still has the blue film sandwiched between it, that is, the blue film is sandwiched between the inner ring and the outer ring. Therefore, the blue film needs to be removed during the ring disassembly process. In this embodiment, the disassembly mechanism 4 also includes a film removal structure 43, which is used to remove the film between the inner ring and the outer ring.

[0050] Specifically, the film removal structure 43 includes a film removal cylinder 431 fixed to the upper side of the workbench 1 by a bracket. The piston rod of the film removal cylinder 431 is connected to a vertical rod 432, which is located above the center of the third through hole 11. The film removal cylinder 431 is located on the upper side of the cover plate 2. Under the action of the film removal cylinder 431, the vertical rod 432 moves up and down. After separating the inner ring from the outer ring, the film removal cylinder 431 controls the vertical rod 432 to move downward. At this time, the vertical rod 432 moves downward from the upper side, thereby pressing the blue film downward and causing the blue film to move downward. During the downward movement of the blue film, the outer ring is still located on the upper side of the first step 413. Therefore, the blue film can be separated from the outer ring. As the vertical rod 432 continues to move downward, it passes through the third through hole 11, allowing the blue film to be moved out from the third through hole 11 to the lower side of the workbench 1. A corresponding collection bucket is set at the corresponding position on the lower side of the workbench 1 (directly opposite the lower side of the third through hole 11) to complete the removal and collection of the blue film.

[0051] During the downward movement of the vertical rod 432, in order to better separate the blue film from the outer ring, in this embodiment, a connecting block 433 is provided on the lower side of the vertical rod 432. The connecting block 433 has multiple connecting grooves around the axis of the vertical rod 432. The connecting rod is rotatably provided with an inclined rod 434 at the position of the connecting groove, and a pressure roller 435 is rotatably provided on the lower side of the inclined rod 434. Specifically, three connecting grooves are set and evenly distributed around the vertical rod 432 with the vertical rod 432 as the axis. At this time, the pressure roller 435 is at the lowest position, so the pressure roller 435 first contacts the blue film. When the pressure roller 435 continues to descend under the control of the vertical rod 432, it is closer to the outer ring when it contacts the blue film. At the same time, three pressure rollers 435 are set so that when the pressure roller 435 moves downward, it can provide a more stable force to the blue film, so that the blue film is not easily torn when separating from the outer ring, thereby avoiding the blue film sticking to the outer ring after tearing and affecting the normal use of the outer ring.

[0052] The second through hole 22 is mainly for facilitating the vertical movement of the corresponding parts of the pressure dividing structure 42 and the film removal structure 43. Therefore, the shape of the second through hole 22 is not limited to a circle. It can be set to other shapes according to actual needs. For example, in this embodiment, it can be set to a hole structure with multiple annular processing shapes. It is only necessary to ensure that it can operate normally during the downward inner ring and blue film process.

[0053] The feeding mechanism 5 includes a mechanism for pushing the film expansion ring to the position of the second through hole 22 and for pushing the disassembled inner and outer rings to the outside of the worktable 1. These two processes are quite independent. Therefore, in this example, two independent structures are set up to realize the corresponding functions respectively. Specifically, the feeding mechanism 5 includes an infeed ring pushing structure 51 and an outfeed ring pushing structure 52. The infeed pushing structure includes an infeed cylinder 511. The piston rod of the infeed cylinder 511 is connected to the infeed pushing block 512. The infeed pushing block 512 moves in the material transfer channel 23. The front side of the infeed pushing block is provided with an arc-shaped part. The feeding block moves within the transfer channel 23. After the feeding block moves out from the side of the first through hole 21, the expansion ring to be separated at the bottom of the material rack 3 moves to the transfer channel 23. Then, under the action of the pushing cylinder 511, the feeding block moves toward the second through hole 22, thereby moving the expansion ring that has fallen to the position of the transfer channel 23 to the position of the second through hole 22. At this time, the expansion ring at the bottom of the material rack 3 is located above the feeding block. After the feeding block moves the previous expansion ring to the second through hole 22, it retreats to the outside of the first through hole 21. At this time, the expansion ring to be separated at the bottom moves to the transfer channel 23, thereby realizing the automatic movement of the expansion ring to be separated to the position of the transfer channel 23.

[0054] After separating the inner ring and the outer ring, the inner ring and the outer ring need to be pushed out to the outside of the workbench 1. Specifically, in this embodiment, the ring pushing structure 52 includes a pushing cylinder 521 set at the bottom of the workbench 1. The piston rod of the pushing cylinder 521 is connected to a material pushing block 522. The bottom of the workbench 1 is also provided with two material guiding blocks 523. The two material guiding blocks 523 and the workbench 1 form a material guiding groove. The material pushing block 522 is used to push the inner ring or the outer ring that has fallen to the second step 414 position through the material guiding groove to the outside of the workbench 1. At this time, a discharge guide block 523 is provided on the lower side of the workbench 1. The two discharge guide blocks 523 form a discharge guide groove. The height of the discharge guide groove is flush with the second step 414. After the inner ring and outer ring move to the position of the second step 414, the discharge push block 522 moves back and forth through the action of the side push cylinder 521. This can push the inner ring and outer ring at the position of the second step 414 to the outside of the workbench 1 through the discharge guide groove, thereby realizing the stable removal of the inner ring and outer ring.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] 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. An automatic ring opening structure, characterized by, The workbench includes a cover plate on its upper side, forming a material transfer channel between the cover plate and the workbench. The cover plate has a first through hole and a second through hole. The material rack is set on the upper side of the first through hole of the cover plate and is used to place the film expansion ring to be disassembled. The film expansion ring at the material rack position moves to the material transfer channel position through the first through hole. The disassembly mechanism is located at the second through hole position and is used to separate the inner ring and outer ring of the expansion ring. The third through hole is located below the second through hole on the worktable. The disassembled inner and outer rings are moved to the lower side of the worktable through the third through hole. The pushing mechanism is used to move the expanding ring in the material transfer channel from the first through hole position to the second through hole position, and to remove the inner ring and outer ring that have been moved to the lower side of the worktable after passing through the third through hole position.

2. The automatic ring-opening structure according to claim 1, characterized in that, The separation mechanism includes a support plate structure and a pressure dividing structure. Both the support plate structure and the pressure dividing structure are provided in two sets, located on both sides of the second through hole. The support plate structure is used to support the outer ring of the expansion ring, and the pressure dividing structure is located on the upper side of the first through hole to separate the inner ring of the expansion ring from the outer ring.

3. The automatic ring-opening structure according to claim 2, characterized in that, The pallet structure includes a pallet cylinder located outside the second through hole. The piston rod of the pallet cylinder is connected to a support block. The support block has a first step and a second step with stepped distribution. The first step is flush with the material transfer channel, and the second step is set lower than the first step. The second step is close to the axis of the third through hole. When the expanding ring moves to the second channel position, the outer ring of the expanding ring abuts against the first step, and the inner ring of the expanding ring projects downward to the second step position. When the pressure dividing structure separates the inner ring from the outer ring, the inner ring moves to the second step position. When the support block moves outward under the action of the pallet cylinder, the outer ring at the first step position moves to the second step position.

4. The automatic ring-opening structure according to claim 3, characterized in that, The workbench is provided with a receiving groove communicating with the third through hole. There are two receiving grooves, located on both sides of the third through hole respectively. The first step and the second step of the support block move within the receiving groove.

5. The automatic ring-opening structure according to any one of claims 3 to 4, characterized in that, The pressure-dividing structure includes a pressure-dividing cylinder, which is fixed on the upper side of the cover plate. The piston rod of the pressure-dividing cylinder is connected to a pressure-dividing rod, which moves up and down within the second through hole. When the expanding ring moves to the position of the second through hole, the pressure-dividing rod moves downward under the action of the pressure-dividing cylinder and abuts against the inner ring of the expanding ring.

6. The automatic ring-opening structure according to claim 5, characterized in that, The splitting mechanism also includes a membrane removal structure for removing the membrane between the inner and outer rings.

7. The automatic ring-opening structure according to claim 6, characterized in that, The film removal structure includes a film removal cylinder fixed to the upper side of the workbench by a bracket. The piston rod of the film removal cylinder is connected to a vertical rod, which is located above the center of the third through hole.

8. The automatic ring-opening structure according to claim 7, characterized in that, A connecting block is provided on the lower side of the vertical rod. The connecting block has multiple connecting grooves around the axis of the vertical rod. An inclined rod is rotatably provided on the connecting block at the position of the connecting groove. A pressure roller is rotatably provided on the lower side of the inclined rod.

9. The automatic ring-opening structure according to claim 5, characterized by The feeding mechanism includes an infeed ring pushing structure and an outfeed pushing structure. The infeed ring pushing structure includes a pushing cylinder. The piston rod of the pushing cylinder is connected to a feeding push block. The feeding push block moves within the material transfer channel. The front side of the feeding push block is provided with an arc-shaped portion.

10. The automatic ring-opening structure according to claim 9, characterized in that, The out-of-ring pushing structure comprises a pushing cylinder arranged at the bottom of the workbench, a discharging pushing block is connected to the piston rod of the pushing cylinder, and the bottom of the workbench is further provided with two discharging guide blocks, the two discharging guide blocks and the workbench form a discharging guide groove, and the discharging pushing block is used for pushing the inner ring or the outer ring falling to the second step position out of the workbench through the discharging guide groove.

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