A fully automatic crystal expander

Abstract

The present application relates to a kind of full-automatic crystal expander, including iron ring feeding mechanism, disassembly ring feeding mechanism, move ring and expand lower platform, expand upper mechanism, iron ring receiving mechanism, finished product receiving mechanism and discharge moving mechanism, disassembly ring feeding mechanism is equipped with the inner ring feeding position and outer ring feeding position of transverse distribution, expand upper mechanism is longitudinally moved between pressing position and discharge position, iron ring feeding position, pressing position, inner ring feeding position, outer ring feeding position are sequentially distributed from left to right to form inner transverse station, move ring and expand lower platform is laterally moved in the lower side of inner transverse station, discharge position both sides are equipped with iron ring receiving mechanism and finished product receiving mechanism, three form outer transverse station, discharge moving mechanism is arranged between iron ring receiving mechanism and finished product receiving mechanism, tear residual film structure tears residual film and straightens, through inner and outer transverse station layout, make feeding, expand, move ring, tear film, receiving and other processes short-distance link, effectively shorten production rhythm, improve output efficiency.

Description

Technical Field

[0001] This invention relates to the field of crystal expansion machines, and in particular to a fully automatic crystal expansion machine. Background Technology

[0002] Die expanders (also known as film expanders or die expanders) are widely used in LED packaging, semiconductor wafer manufacturing and other fields. Their main function is to expand the blue film with attached dies, so that the spacing between the dies is increased, which facilitates subsequent processes such as dicing, sorting or die bonding. The common die expander process includes: fitting an iron ring and a fixing ring (usually divided into an inner ring and an outer ring) together to tension and fix the blue film. After the die expander is completed, the fixing ring with the expanded dies (located on the outside of the blue film) and the iron ring need to be collected together.

[0003] Most equipment has the iron ring loading station, ring unloading loading station, crystal expansion and pressing station, and finished product receiving station scattered. There is a lack of compact linear connection between the stations. The ring shifting and crystal expansion lower platform (carrying the inner and outer rings) needs to move frequently and over long distances between multiple stations, resulting in a long single crystal expansion cycle time and affecting the overall output efficiency.

[0004] Meanwhile, in actual production, after crystal expansion, a ring of residual film usually remains on the inner edge of the iron ring. If it is manually removed, the efficiency is low. If a robot is used to remove it directly, the residual film is light and may scatter in the working environment, possibly getting tangled on other parts (such as moving parts) and causing malfunctions. Summary of the Invention

[0005] Therefore, it is necessary to provide a fully automated die expansion machine to address the problems in the existing technology.

[0006] A die expander, comprising The iron ring feeding mechanism includes an iron ring storage rack, an iron ring moving structure, and an iron ring feeding position. The ring-disassembly and feeding mechanism includes a fixed ring storage rack and a ring-disassembly structure. The ring-disassembly structure has horizontally distributed inner ring feeding positions and outer ring feeding positions. The ring-disassembly structure splits the fixed ring into an inner ring and an outer ring, and moves them to the inner ring feeding position and the outer ring feeding position, respectively. The ring-shifting die expansion platform includes the laterally moving outer ring stage and the inner ring stage. The die expansion upper mechanism, located above the transfer ring platform, includes a die expansion upper die, which moves longitudinally between the pressing position and the discharge position via a longitudinal moving structure. The iron ring loading position, pressing position, inner ring loading position, and outer ring loading position are arranged sequentially from left to right to form an inner transverse station. The outer ring platform and inner ring platform of the ring-shifting and crystal expansion lower platform move under two adjacent inner transverse stations. The discharge position is provided with an iron ring receiving mechanism and a finished product receiving mechanism on both sides. A discharge moving mechanism is provided between the iron ring receiving mechanism and the finished product receiving mechanism. The discharge moving mechanism includes a residual film tearing structure, which is used to tear off the annular residual film remaining on the inside of the iron ring and pull it into a straight line.

[0007] At this point, the working process of the die expander is as follows: Iron ring feeding: When the iron ring feeding mechanism is activated, the iron rings in the iron ring storage rack are taken out by the iron ring moving structure and transferred to the iron ring feeding position to wait.

[0008] Fixed ring splitting and feeding: The ring splitting and feeding mechanism works simultaneously. The fixed rings in the fixed ring storage rack enter the ring splitting structure. The ring splitting structure splits the fixed rings into independent inner rings and outer rings, and then transfers them to the horizontally distributed inner ring feeding positions and outer ring feeding positions respectively.

[0009] Ring transfer die expansion lower platform ring removal: The ring transfer die expansion lower platform (including the outer ring platform and the inner ring platform) moves laterally. First, it moves to below the outer ring loading position and the inner ring loading position to receive the outer ring and the inner ring. Then the platform continues to move laterally, moving the inner ring to the iron ring loading position. At this time, the outer ring is exactly located on the lower side of the die expansion upper mold of the die expansion upper mechanism.

[0010] Iron ring and outer ring transfer: The inner ring platform of the lower platform of the transfer ring expander moves upward, and the iron ring is transferred from the iron ring loading position to the upper side of the inner ring platform of the lower platform of the transfer ring expander. At the same time, the upper die of the expander moves downward and clamps the outer ring on the lower side of the upper die of the expander.

[0011] Pressing and expanding the die: The lower platform of the moving ring die expander moves, causing the inner ring platform to move to the lower side of the upper die expander. The upper die expander and the lower platform of the moving ring die expander are pressed together to complete the die expander.

[0012] Finished product and iron ring discharge: The finished product and iron ring (with annular residual film) that have completed crystal expansion are located at the upper die position of the crystal expansion mold. The upper die moves the finished product and iron ring (with annular residual film) to the discharge position. Then, they are collected by the finished product collection mechanism and the iron ring collection mechanism respectively. During the collection of the iron ring (with annular residual film), the residual film tearing structure clamps and tears off the annular residual film remaining on the inside of the iron ring, and further pulls it into a straight line. The straight residual film falls into the collection box located below the residual film tearing structure to collect the residual film.

[0013] At this point, the ring-disassembly and loading mechanism automatically separates the fixed ring into an inner ring and an outer ring, and sends them to the corresponding loading positions. In conjunction with the dual platforms (outer ring platform and inner ring platform) of the ring-shifting die expansion platform, the iron ring loading position, pressing position, inner ring loading position, and outer ring loading position are distributed from left to right to form an inner lateral workstation. This allows the ring-shifting die expansion platform to complete a series of actions such as ring picking, ring delivery, and pressing by only making short lateral movements between adjacent workstations. Compared with the distributed layout, this compact linear workstation design significantly reduces the platform's idle travel time, ensures smooth connection between processes, effectively shortens the production cycle of a single die expansion, and significantly improves the output per unit time.

[0014] By integrating a film-tearing structure into the discharge moving mechanism, the annular film on the inner side of the iron ring can be automatically torn off during the discharge process, and the soft annular film can be further stretched into a straight line. The straight film is less likely to entangle or stick together, making it easier to collect in a unified manner. At the same time, it avoids the annular film from getting tangled on the guide rails, cylinder rods and other moving parts of the equipment during the collection or conveying process, thereby reducing the equipment failure rate and improving the stability and reliability of the whole machine operation.

[0015] In one embodiment, the discharge moving mechanism includes a lateral moving module. The moving end of the lateral moving module is provided with a connecting plate. The outer side of the connecting plate is provided with a push ring structure and a finished product moving structure. The film tearing structure is located between the push ring structure and the iron ring receiving mechanism and moves synchronously with the push ring structure. The iron ring receiving mechanism, the discharge position, and the finished product receiving mechanism are distributed from left to right to form an outer lateral station. The film tearing structure and the finished product moving structure move under two adjacent outer lateral stations.

[0016] In one embodiment, the film-tearing structure is fixed to a vertical film-tearing cylinder with a connecting plate. The piston rod of the vertical film-tearing cylinder is connected to a horizontal film-clamping cylinder. The moving end of the horizontal film-clamping cylinder is equipped with a film-clamping claw. A pulling cylinder is provided on the outside of the iron ring receiving mechanism. The piston rod of the pulling cylinder is equipped with a pull rod. The iron ring is pushed to the iron ring receiving mechanism under the action of the push ring structure. The film-clamping claw of the horizontal film-clamping cylinder moves to the inside of the iron ring and clamps the residual film. The horizontal moving module and the vertical film-tearing cylinder control the film-clamping claw to move outward. The residual film gradually separates from the iron ring. The separated residual film gradually moves out from the lower side of the pull rod to the outside of the iron ring receiving mechanism. When the film-clamping claw moves to the outside of the pull rod, the pull rod moves down and inserts into the inner side of the separated residual film ring. The distance between the pull rod and the film-clamping claw gradually increases, and the residual film is pulled into a straight line.

[0017] In one embodiment, the iron ring receiving mechanism includes a side baffle, with the receiving iron ring and the pulling cylinder located on the inner and outer sides of the side baffle, respectively. A guide wheel is provided on the lower side of the side baffle, and the iron ring enters the inner side of the side baffle from the lower side of the guide wheel. When the residual film is completely peeled off from the lower side of the iron ring, the last separated residual film is stuck on the outer side of the pull rod.

[0018] In one embodiment, the ring-disassembly and feeding mechanism includes a base plate, a cover plate on the upper side of the base plate, and a material transfer channel formed between the cover plate and the base plate. The cover plate has a first through hole and a second through hole, and a corresponding third through hole is provided below the second through hole. A material rack is provided above the first through hole of the fixed material rack. The fixed ring in the material rack moves from the first through hole to the material transfer channel. A first pushing structure is provided in the material transfer channel to move the fixed ring from the first fixed through hole to the second through hole. A splitting structure is provided at the second through hole to split the fixed ring into an inner ring and an outer ring. The inner ring moves to the underside of the base plate through the third through hole. The underside of the base plate is provided with a guide rail, a second pushing structure, and an inner ring storage position. The underside of the second through hole is provided with a support structure. The support structure includes a moving block that moves in and out at the position of the second through hole. The moving block has an upper step flush with the upper side of the base plate and a lower step flush with the guide rail. The inner ring falls from the position of the third through hole to the position of the lower step and moves to the inner ring storage position under the action of the second pushing structure. When the ring-shifting die expansion lower platform moves to the underside of the base plate, the outer ring platform and the inner ring platform are located below the third through hole and the inner ring storage position, respectively.

[0019] In one embodiment, the upper side of the base plate is further provided with a guide structure, the guide structure including a vertical cylinder fixed to the upper side of the cover plate by a bracket, the piston rod of the vertical cylinder is fixed with a guide plate, the guide plate is generally conical, the guide plate moves up and down at the second through hole and the third through hole, the lower side of the guide plate is provided with a pressure rod, the pressure rod is located above the center of the third through hole, the outer ring platform of the ring-shifting expansion platform is provided with a waste film hole corresponding to the pressure rod, when the pressure rod moves downward, the pressure rod separates the waste blue film from the outer ring and inserts it into the lower side of the ring-shifting expansion platform from the waste film hole.

[0020] In one embodiment, the die expansion upper mechanism includes an upper template fixed by a bracket. The die expansion upper mold and the upper template are connected by a guide rail slider structure. The die expansion upper mold includes a movable plate located below the upper template. The movable plate is fixed to the lower side of the upper template by the guide rail slider. A pressing upper mold is provided on the lower side of the movable plate. The pressing upper mold is provided with a buckle for fixing the inner ring. An upper cylinder is provided on the upper side of the movable plate to drive the pressing upper mold to move up and down. A pressing plate is connected to the lower side of the movable plate by a pressing cylinder. A communicating hole corresponding to the inner ring platform is provided in the middle of the pressing plate. An iron ring suction cup is provided around the communicating hole of the pressing plate. The iron ring suction cup extends to the lower side of the pressing plate.

[0021] In one embodiment, the iron ring storage rack includes a double-layered feeding rack and a discharging rack. The feeding rack has a lifting structure at its end. The lifting structure includes a lifting cylinder located at the bottom of the feeding rack. The piston rod of the lifting cylinder has a top plate at its top. The top plate moves up and down on the upper side of the feeding rack. The feeding rack has a push-out structure for pushing the iron ring frame on the upper side of the feeding rack to the upper side of the top plate of the lifting structure. The upper side of the top plate has a push-back structure. When the top plate is flush with the discharging rack, the push-back structure pushes the iron ring frame on the upper side of the top plate to the discharging rack.

[0022] In one embodiment, the iron ring moving structure includes a double-headed cylinder fixed by a bracket. The two moving ends of the double-headed cylinder are provided with guide plates. A linear moving module is provided on the outer side of the guide plates. The moving end of the linear moving module is connected to a feeding cylinder, which is a finger cylinder. The moving end of the finger cylinder is fixed with a feeding gripper. The feeding gripper takes the iron ring out of the iron ring storage rack and moves it to the upper side of the guide plate. When the ring-shifting die-expanding lower platform moves to the lower side of the guide plate, the guide plate moves outward under the action of the double-headed cylinder, and the iron ring is transferred to the upper side of the inner ring platform of the ring-shifting die-expanding lower platform.

[0023] In one embodiment, the ring-shifting die expansion platform includes a lateral movement module. The upper side of the lateral movement module is provided with a ring-shifting body. The inner ring stage and the outer ring stage are located in the middle of the upper side of the ring-shifting body. The lower side of the inner ring stage is provided with a lifting structure for controlling the up and down movement of the inner ring stage. The inner ring stage and the outer ring stage are respectively provided with positioning steps corresponding to the inner ring and the outer ring.

[0024] The aforementioned fully automatic crystal expansion machine arranges the iron ring loading position, pressing position, inner ring loading position, and outer ring loading position from left to right to form an inner transverse workstation, while the iron ring receiving mechanism, discharge position, and finished product receiving mechanism form an outer transverse workstation. This compact and orderly workstation layout, combined with the transverse movement of the ring-shifting crystal expansion lower platform, allows various actions (such as loading, crystal expansion, ring shifting, film tearing, and material collection) to be performed in parallel or in short-distance connections, greatly shortening the time of a single crystal expansion cycle and increasing the output per unit time of the equipment.

[0025] By integrating a specially designed film-tearing structure into the discharge moving mechanism, the annular film remaining on the inner side of the iron ring after crystal expansion can be automatically clamped, pulled, and completely separated from the iron ring. At this time, the structure can further pull the separated annular film into a straight shape, which completely solves the problems of loose annular film, easy adhesion, and difficulty in collection. It realizes full automation from crystal expansion to finished product collection and waste film treatment without manual intervention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the fully automatic crystal expansion machine of the present invention; Figure 2 This is a schematic diagram of the iron ring storage rack structure of the fully automatic die expander of the present invention; Figure 3 This is a schematic diagram of the lifting structure of the fully automatic crystal expander of the present invention; Figure 4 This is a schematic diagram of the iron ring moving structure of the fully automatic crystal expander of the present invention; Figure 5 This is a schematic diagram of the transverse station distribution structure inside the fully automatic crystal expander of the present invention; Figure 6 This is a schematic diagram of the upper die expansion mechanism of the fully automatic die expansion machine of the present invention; Figure 7 This is a schematic diagram of the upper die expansion mechanism of the fully automatic die expansion machine of the present invention; Figure 8 This is a schematic diagram of the lower platform structure of the fully automatic die expander of the present invention; Figure 9 This is a schematic diagram of the fully automatic crystal expansion machine ring-removal and feeding mechanism of the present invention; Figure 10 Figure 9 Enlarged view of the structure at point A in the middle; Figure 11 Figure 9 Enlarged view of the structure at point B; Figure 12 The bottom of the fully automatic die expander ring removal and feeding mechanism of this invention. Figure 13 for Figure 12 Enlarged structural diagram at point C; Figure 14 This invention relates to a fully automatic die expander discharge moving mechanism; Figure 15 The bottom of the fully automatic crystal expander discharge moving mechanism of the present invention. Figure 16 for Figure 15 Enlarged structural diagram at point D; Among them, 1. Iron ring feeding mechanism; 11. Iron ring storage rack; 111. Feeding rack; 112. Discharging rack; 113. Lifting structure; 1131. Lifting cylinder; 1132. Top plate; 114. Pushing out structure; 115. Pushing back structure; 12. Iron ring moving structure; 121. Double-headed cylinder; 122. Guide plate; 123. Feeding cylinder; 124. Feeding gripper; 2. Ring-disassembly feeding mechanism; 21. Fixed ring storage rack; 22. Ring-breaking structure; 221. Base plate; 222. Cover plate; 223. First through hole; 224. Second through hole; 225. Third through hole; 226. Material rack; 227. First pushing structure; 228. Split structure; 229. Guide rail; 2210. Support structure; 22101. Moving block; 22102. Upper step; 22103. Lower step; 2211, Inner ring storage bit; 2212, Second push structure; 2212, Guide structure; 22121, Vertical cylinder; 22122, Guide plate; 22123, Pressure rod; 3. Lower platform for ring-shifting and crystal expansion; 31. Outer ring stage; 32. Inner ring stage; 33. Waste film hole; 34. Ring-shifting body; 35. Lifting structure; 4. Die expansion upper mechanism; 41. Die expansion upper mold; 411. Moving plate; 412. Pressing upper mold; 413. Buckle; 414. Upper cylinder; 415. Pressing plate; 416. Iron ring suction cup; 42. Upper template; 5. Iron ring receiving mechanism; 51. Side baffle; 52. Guide wheel; 6. Finished product receiving mechanism; 7. Material discharge moving mechanism; 71. Residual film tearing structure; 711. Vertical film tearing cylinder; 712. Horizontal film clamping cylinder; 713. Film clamping claw; 714. Pulling cylinder; 715. Pull rod; 72. Push ring structure; 73. Finished product moving structure; 100, Iron ring loading position; 200, Inner ring loading position; 300, Outer ring loading position; 400, Pressing position; 500, Discharge position. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention 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 thorough understanding of the present invention. However, the present invention can be practiced 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 the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] 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.

[0029] 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 in the description of the invention 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.

[0030] like Figures 1 to 16 As shown, a fully automatic die expansion machine includes... The iron ring feeding mechanism 1 includes an iron ring storage rack 11, an iron ring moving structure 12, and an iron ring feeding position 100. The ring-disassembly and feeding mechanism 2 includes a fixed ring storage rack 21 and a ring-disassembly structure 22. The ring-disassembly structure 22 has a transversely distributed inner ring feeding position 200 and outer ring feeding position 300. The ring-disassembly structure 22 splits the fixed ring into an inner ring and an outer ring, and moves them to the inner ring feeding position and the outer ring feeding position 300 respectively. The ring-shifting die expansion lower platform 3 includes a laterally movable outer ring stage 31 and an inner ring stage 32. The die expansion upper mechanism 4, located above the transfer ring platform, includes a die expansion upper mold 41. The die expansion upper mold 41 moves longitudinally between the pressing position 400 and the discharge position via a longitudinal moving structure. The iron ring loading position 100, pressing position, inner ring loading position 200, and outer ring loading position are arranged sequentially from left to right to form an inner transverse work station. The outer ring platform 31 and inner ring platform of the ring-shifting and crystal expansion lower platform 3 move under two adjacent inner transverse work stations. The discharge position 500 is provided with an iron ring receiving mechanism 5 and a finished product receiving mechanism 6 on both sides. A discharge moving mechanism 7 is provided between the iron ring receiving mechanism 5 and the finished product receiving mechanism 6. The discharge moving mechanism 7 includes a film tearing structure 71, which is used to tear off the annular film remaining on the inner side of the iron ring and pull it into a straight line.

[0031] The iron ring loading position 100, pressing position, inner ring loading position 200, and outer ring loading position 300 are arranged from left to right to form an inner transverse workstation. At the same time, the iron ring receiving mechanism 5, the discharge position 500, and the finished product receiving mechanism 6 form an outer transverse workstation. This compact and orderly workstation layout, combined with the transverse movement of the ring-shifting and crystal expansion lower platform 3, allows various actions (such as loading, crystal expansion, ring shifting, film tearing, and material collection) to be performed in parallel or in short-distance connections, greatly shortening the time of a single crystal expansion cycle and increasing the output of the equipment per unit time.

[0032] By integrating a specially designed film-tearing structure 71 into the discharge moving mechanism 7, the annular residual film remaining on the inner side of the iron ring after crystal expansion can be automatically clamped, pulled and completely separated from the iron ring. At this time, the structure can further pull the separated annular residual film into a straight shape, which completely solves the problems of loose annular residual film, easy adhesion and difficult collection, and realizes full automation from crystal expansion to finished product collection and waste film treatment without manual intervention.

[0033] First, the iron ring feeding mechanism 1 moves the iron ring to the iron ring feeding position 100; at the same time, the ring disassembly feeding mechanism 2 disassembles the fixed ring into an inner ring and an outer ring, and moves them to the inner ring feeding position 200 and the outer ring feeding position 300 respectively.

[0034] Then, the ring-shifting die-expanding lower platform 3 moves laterally below the inner ring loading position 200 and the outer ring loading position 300. The outer ring platform receives the outer ring, and the inner ring platform 32 receives the inner ring, thereby transferring the separated inner and outer rings to the positions of the inner ring platform 32 and the outer ring. The ring-shifting die-expanding lower platform 3 continues to move laterally below the iron ring loading position 100, receiving the iron ring. At this time, the iron ring is stacked on the upper side of the inner ring on the inner ring platform 32, while the outer ring platform is located exactly below the die-expanding upper mold. In the side position, the die expansion upper mold moves down, transferring the outer ring on the upper side of the outer ring stage 31 to the lower side of the die expansion upper mold 41. In this way, the die expansion lower platform 3 is positioned so that the inner ring stage and the outer ring stage 31 correspond to the iron ring loading position and the die expansion upper mold 41 respectively, reducing the movement of the die expansion lower platform 3. Then, the inner ring stage of the die expansion lower platform 3 is controlled to move laterally to below the pressing position (that is, below the die expansion upper mold), and the die expansion upper mold and the inner ring stage are pressed together to complete the die expansion.

[0035] After the crystal expansion is completed, the upper mold 41 (with the finished product and the iron ring) moves to the discharge position 500. At the discharge position 500, the iron ring and the finished product are moved to the iron ring collection mechanism 5 and the finished product collection mechanism 6 respectively for collection. The discharge moving mechanism 7 is equipped with a film tearing structure 71. During the movement, the annular blue film on the lower side of the iron ring is torn off and pulled into a straight line.

[0036] By arranging the iron ring loading position 100, pressing position 400, inner ring loading position, and outer ring loading position 300 sequentially from left to right to form an inner transverse workstation, the discharge moving mechanism 7 can complete all actions by making only short-distance transverse movements between adjacent workstations. This significantly shortens the travel and waiting time of the ring-shifting crystal expansion lower platform 3, improving production efficiency. Simultaneously, by integrating a residual film tearing structure 71 into the discharge moving mechanism 7, the residual film is automatically torn off and straightened during the iron ring discharge process. This avoids the problem of annular residual film entanglement on moving parts of the equipment. The straightened residual film is easy to collect, achieving full-process automation and improving equipment operational reliability.

[0037] The iron ring loading position 100, pressing position 400, inner ring loading position 200, and outer ring loading position 300 are arranged sequentially from left to right to form an inner transverse workstation. The term "inner transverse workstation" refers to these workstations arranged in a straight line in the horizontal direction. The outer ring stage 31 and inner ring stage 32 of the ring-shifting die-expanding lower platform 3 move laterally below these inner transverse workstations, passing through each workstation in sequence. At this time, the spacing between each workstation is equal, so that the ring-shifting die-expanding lower platform 3 can be positioned using a constant-step movement method. The arrangement order of the workstations in the inner transverse workstation is not limited to left to right; it can also be set from right to left according to the actual production line layout needs, as long as the transverse distribution is maintained. Of course, the transverse and longitudinal directions are only described by the angular positions shown in the attached diagram and are not completely limited.

[0038] The outer ring stage 31 and inner ring stage 32 of the ring-shifting die expansion lower platform 3 move under two adjacent inner lateral workstations. Specifically, when the outer ring stage 31 and inner ring stage move laterally synchronously, they can reciprocate between any two adjacent workstations. At this time, when the outer ring stage 31 is under the iron ring loading position 100, the inner ring stage 32 is exactly located under the pressing position 400 (die expansion upper mold). In this way, the two workstations can complete independent actions simultaneously without affecting each other. For example, they can move to the inner ring loading position and the outer ring loading position 300 at the same time. In coordination with the ring-removing loading mechanism 2, the transfer of the inner and outer rings can be completed simultaneously, thereby achieving efficient movement of the inner and outer rings, improving the production rhythm, and reducing the movement of the ring-shifting die expansion lower platform 3.

[0039] The die expansion upper mechanism 4 is set longitudinally, that is, the die expansion upper mold 41 moves longitudinally, thus forming a longitudinally distributed pressing position 400 and a discharge position 500. Then, an iron ring receiving mechanism 5 and a finished product receiving mechanism are respectively set on both sides of the discharge position 500. In this way, the iron ring receiving mechanism 5, the discharge position 500, and the finished product receiving mechanism 6 are distributed from left to right to form an outer transverse station. This distribution can reduce the number of movements and the movement distance of the discharge moving mechanism 7, thereby improving efficiency.

[0040] The so-called "ring-shaped residual film" refers to the blue film in the middle of the iron ring after crystal expansion is clamped between the inner and outer rings, leaving a ring-shaped residual blue film in the middle of the iron ring. The residual film tearing structure 71 clamps the ring-shaped residual film and applies an outward pulling force to separate the ring-shaped residual film from the iron ring and continue to stretch it into a straight line for easy collection. A collection frame is provided on the lower side of the residual film tearing structure 71, so that the straight residual film can fall directly into the collection frame without any mess.

[0041] At this point, of course, the residual film being stretched into a straight line does not refer to a standard straight line. Compared to the scattered residual film in the prior art, the residual film is stretched at both ends to maintain a straight line as a whole and has a certain stiffness. This way, it will not be scattered and will not drift around during the fall. It will basically fall in a straight line to the collection box or collection trough. The material discharge moving mechanism 7 needs to simultaneously complete three actions: finished product transfer, iron ring transfer, and film tearing. If the three actions are executed by independent drive mechanisms, it will lead to complex structure and increased cost. In addition, additional synchronization control logic is required between each action, which is prone to action interference or timing disorder. Therefore, a compact moving mechanism that can collaboratively complete multiple material discharge actions is needed. In one embodiment, the material discharge moving mechanism 7 includes a lateral moving module. The moving end of the lateral moving module is provided with a connecting plate. The outer side of the connecting plate is provided with a push ring structure 72 and a finished product moving structure. The film tearing structure 71 is located between the push ring structure 72 and the iron ring receiving mechanism 5 and moves synchronously with the push ring structure 72. The iron ring receiving mechanism 5, the discharge position 500, and the finished product receiving mechanism 6 are distributed from left to right to form an outer lateral station. The film tearing structure and the finished product moving structure 73 move under two adjacent outer lateral stations.

[0042] Specifically, the lateral movement module can be a synchronous belt linear module, a lead screw guide rail module, or a rodless cylinder, as long as it can achieve lateral reciprocating linear movement. The outer side of the connecting plate is provided with a push ring structure 72 and a finished product movement structure. The push ring structure is used to push the empty iron ring from the discharge position 500 to the side of the iron ring receiving mechanism 5. The finished product movement structure is used to move the crystal-expanded finished product from the discharge position to the finished product receiving mechanism. The iron ring receiving mechanism 5, the discharge position, and the finished product receiving mechanism 6 are arranged from left to right to form an outer lateral workstation. When the lateral movement module drives the connecting plate to move laterally, the film tearing structure 71 and the push ring structure 72 move synchronously and can reciprocate between the iron ring receiving mechanism 5 and the discharge position 500. The finished product movement structure reciprocates between the discharge position 500 and the finished product receiving mechanism 6.

[0043] When the iron ring is being collected, the push ring structure 72 needs to be moved to the discharge position 500 first (so that the finished product moving structure 73 is located outside the discharge position 500). The connecting plate controls the tearing film structure 71 and the push ring structure 72 to move simultaneously toward the iron ring collecting mechanism 5, and the finished product moving structure 73 to move toward the discharge position. When the iron ring is pushed to the iron ring collecting mechanism 5, the finished product moving structure 73 moves exactly to the discharge position, and the finished product can be transferred to the finished product moving structure position. Then the connecting plate controls the tearing film structure 71 and the push ring structure 72 to move simultaneously away from the iron ring collecting mechanism 5. The finished product moving structure 73 will also move towards the finished product receiving mechanism 6 to facilitate the collection of finished products. At the same time, the residual film tearing structure 71 and the push ring structure 72 move away from the iron ring receiving mechanism 5. The residual film tearing structure 71 tears the residual film from the underside of the iron ring and pulls it into a straight line, thereby completing the tearing and sorting of the residual film, which facilitates the subsequent collection of the residual film. At this time, the finished product moving structure 73 continues to move to the underside of the finished product receiving mechanism 6 to complete the collection of finished products. At the same time, the push ring structure 72 also moves to the discharge position 500 to receive and move the next iron ring that needs to be collected.

[0044] By setting the push ring structure 72, the finished product moving structure 73, and the film tearing structure 71 on the same connecting plate and driving them synchronously by the same transverse moving module, the three discharge actions are coordinated. Compared with the scheme where each is driven independently, this embodiment reduces the number of drive sources, makes the structure more compact, simplifies the control logic, avoids action interference, and reduces manufacturing costs.

[0045] The push ring structure 72 and the tear film structure 71 can also be controlled by independent lateral drive mechanisms instead of being driven by the same lateral movement module. However, this would increase the cost and the complexity of synchronous control. As another variation, the moving end of the lateral movement module can also be free of the connecting plate, and the push ring structure 72, the finished product moving structure 73 and the tear film structure 71 can be directly fixed to the moving end.

[0046] The film-tearing structure 71 needs to completely separate the annular film from the underside of the iron ring and straighten the separated annular film into a straight line for easy collection. At this point, the annular film is a soft film material, and relying solely on clamping and unidirectional pulling is insufficient to ensure complete separation from the iron ring. Furthermore, the annular film naturally exhibits irregular curling or folding, which can easily clog the collection channel if collected directly. Therefore, a specific mechanical structure is needed that can reliably clamp the film, gradually peel it from the iron ring, and ultimately straighten it into a straight line. In one embodiment, the film-tearing structure is fixed to a vertical film-tearing cylinder 711, and the piston rod of the vertical film-tearing cylinder 711 is connected to a horizontal film-clamping cylinder 712. The movement of the horizontal film-clamping cylinder 712... The end is provided with a film clamping claw 713. The outer side of the iron ring receiving mechanism 5 is provided with a pulling cylinder 714. The piston rod of the pulling cylinder 714 is provided with a pull rod. Under the action of the push ring structure 72, the iron ring is pushed to the iron ring receiving mechanism 5. The film clamping claw of the horizontal film clamping cylinder 712 moves to the inner side of the iron ring and clamps the residual film. The horizontal moving module and the vertical tearing cylinder 711 control the film clamping claw 713 to move outward. The residual film gradually separates from the iron ring. The separated residual film gradually moves out from the lower side of the pull rod 715 to the outer side of the iron ring receiving mechanism 5. When the film clamping claw 713 moves to the outer side of the pull rod 715, the pull rod 715 moves down and inserts into the inner side of the separated residual film ring. The distance between the pull rod 715 and the film clamping claw gradually increases, and the residual film is pulled into a straight line.

[0047] Specifically, the film-tearing structure includes a vertical film-tearing cylinder 711, a horizontal film-clamping cylinder, and film-clamping claws. The vertical film-tearing cylinder 711 is fixedly connected to the connecting plate, and its cylinder body is fixed on the connecting plate. Its piston rod extends and retracts in the vertical direction. The vertical film-tearing cylinder 711 is used to control the up-and-down movement of the film-clamping claws 713, so that the film-clamping claws 713 can approach or move away from the residual film on the iron ring. The horizontal film-clamping cylinder 712 is fixedly connected to the end of the piston rod of the vertical film-tearing cylinder 711. The horizontal film-clamping cylinder 712 is a finger cylinder, and its two moving ends move relative to each other in the horizontal direction. The moving ends of the horizontal film-clamping cylinder 712 are fixed with film-clamping claws 713. Under the drive of the horizontal film-clamping cylinder, the film-clamping claws 713 move closer to each other to clamp the residual film, or move away from each other to release the residual film.

[0048] A pulling cylinder 714 is provided on the outside of the iron ring receiving mechanism 5. The cylinder body of the pulling cylinder 714 is fixed on the outside of the iron ring receiving mechanism 5. Its piston rod extends and retracts in the vertical direction. A pull rod 715 is provided at the end of the piston rod. The pull rod 715 is a slender rod used to insert into the inner side of the ring of residual film as the point of force for pulling the residual film.

[0049] The specific film-tearing work is as follows: (1) Iron ring positioning: The horizontal moving module drives the connecting plate to move, so that the push ring structure 72 pushes the iron ring to the position of the iron ring receiving mechanism 5 and stores and fixes the iron ring. After the iron ring is stored in the iron ring receiving mechanism 5, it cannot move horizontally, and there is an annular residual film on its inner side.

[0050] (2) Film clamping: The vertical film tearing cylinder 711 extends, causing the horizontal film clamping cylinder 712 and the film clamping claw 713 to move upward to the residual film position inside the iron ring. The horizontal film clamping cylinder 712 is activated, and the film clamping claw 713 moves relative to each other to clamp the residual film.

[0051] (3) Initial film tearing: The horizontal moving module drives the connecting plate to move outward (i.e. away from the iron ring receiving mechanism 5), and the vertical film tearing cylinder 711 simultaneously contracts and moves downward. Under the combined action of horizontal and vertical motion, the film clamping claw 713 clamps the residual film and moves outward, and the residual film gradually separates from the inner edge of the iron ring.

[0052] (4) Inserting the pull rod: When the clamping claw 713 moves to the outside of the pull rod (that is, most of the residual film has separated from the iron ring, and only a small part is still attached), the pull rod 715 moves downward under the drive of the pulling cylinder 714 and inserts into the inner side of the separated residual film ring. The clamping claw 713 holds the residual film and continues to move outward until the residual film is completely separated from the iron ring. Since the pull rod 715 is close to the iron ring and is located outside the last separation position of the iron ring and the residual film, after the residual film is separated from the iron ring, the residual film hangs on the pull rod in a ring shape.

[0053] (5) Straightening the residual film: The transverse moving module continues to drive the connecting plate to move outward, and the film clamping claw 713 continues to clamp the residual film to move outward. Since the position of the pull rod 715 is fixed, the distance between the film clamping claw 713 and the pull rod 715 gradually increases. The annular residual film on the pull rod 715 is gradually straightened under the action of the pulling force, and finally forms a straight film strip.

[0054] At this point, the reliable separation and shape transformation of the annular residual film are achieved through the three-step action of "clamping, pulling, and straightening". The film clamping claw first clamps the residual film, and under the combined movement of the horizontal moving module and the vertical tearing cylinder 711, the residual film is gradually peeled off from the iron ring. Then, the pull rod 715 is inserted into the inner side of the annular residual film, and the film clamping claw continues to move outward. Using the pull rod 715 as a fixed fulcrum, the annular residual film is straightened into a straight line. This structure cleverly transforms the annular film into a straight strip, completely solving the problems of loose, easy to entangle, and difficult to collect annular residual film. At the same time, the entire action process is completed in coordination by the horizontal moving module, the vertical tearing cylinder 711, and the horizontal clamping cylinder 712, and is synchronized with the return of the push ring structure (and the movement of finished product collection), without increasing the additional production cycle time.

[0055] At this point, the vertical film-tearing cylinder 711 and the horizontal film-clamping cylinder 712 are not limited to processing vertically or horizontally; they can also be tilted at a certain angle, as long as it does not affect the normal movement of the iron ring into the iron ring storage mechanism.

[0056] Furthermore, to ensure that the pull rod can accurately insert into the center of the residual film ring when it moves downward, the iron ring receiving mechanism 5 includes a side baffle 51. The received iron ring and the pulling cylinder are located on the inner and outer sides of the side baffle 51, respectively. A guide wheel 52 is provided on the lower side of the side baffle. The iron ring enters the inner side of the side baffle from the lower side of the guide wheel 52. When the residual film is completely peeled off from the lower side of the iron ring, the last separated residual film is stuck on the outer side of the pull rod. The pulling cylinder is fixed on the outer side of the side baffle. In this way, before the residual film separates from the iron ring, the pull rod can be inserted into the inner side of the torn residual film. Moreover, since the distance between the pull rod and the final separation position of the residual film and the iron ring is short, after the residual film separates from the iron ring, when the transverse moving module continues to control the film clamping claw 713 to continue moving, the residual film can abut against the pull rod, thereby preventing the residual film from separating from the pull rod. This ensures that the residual film can be stretched and deformed during separation.

[0057] The separation of the fixed ring (separating the inner and outer rings) is usually done manually or semi-automatically, which is inefficient. Alternatively, as in the previous application, the separated inner and outer rings need to be moved to specific positions twice, and then the ring-shifting die-expanding platform 3 needs to be moved to the lower side of the specific position twice to transfer the inner and outer rings to the ring-shifting die-expanding platform 3 respectively. In this case, the components are independent of each other, and their actions are not related, nor is the production cycle, resulting in low efficiency. In this application, the ring-separating and loading mechanism 2 needs to automatically separate the fixed ring (which is an assembly of the inner and outer rings) into independent inner and outer rings, and accurately transfer them to the corresponding inner ring loading position 200 and outer ring loading position 300 respectively, so that the ring-shifting die-expanding platform 3 can pick them up. In one embodiment, the ring-disassembly and feeding mechanism 2 includes a base plate 221, with a cover plate 222 on the upper side of the base plate 221. A material transfer channel is formed between the cover plate 222 and the base plate 221. The cover plate has a first through hole 223 and a second through hole 224. A corresponding third through hole is provided below the second through hole 224. A material rack 226 is provided above the first through hole of the fixed material rack 226. The fixed ring in the material rack 226 moves from the first through hole 223 to the material transfer channel. A first pushing structure 227 is provided in the material transfer channel to move the fixed ring from the first fixed through hole to the second through hole 224. A splitting structure 228 is provided at the second through hole to split the fixed ring into an inner ring and an outer ring. The inner ring moves through the third through hole 225. To the lower side of the base plate, the lower side of the base plate is provided with a guide rail 229, a second pushing structure 2212 and an inner ring storage position 2211. A support structure is provided on the lower side of the second through hole 224. The support structure 2210 includes a moving block 22101 that moves in and out at the position of the second through hole. The moving block is provided with an upper step 22102 that is flush with the upper side of the base plate and a lower step 22103 that is flush with the guide rail 229. The inner ring falls from the position of the third through hole 225 to the position of the lower step 22103, and moves to the inner ring storage position 2211 under the action of the second pushing structure 2212. When the moving ring die expansion lower platform 3 moves to the lower side of the base plate 221, the outer ring platform 31 and the inner ring platform 32 are respectively located on the lower side of the third through hole 225 and the inner ring storage position 2211.

[0058] Specifically, the ring-removing and feeding mechanism 2 includes a base plate 221, which is horizontally set and serves as the installation base for the entire ring-removing and feeding mechanism 2. A cover plate 222 is provided on the upper side of the base plate 221, and a material transfer channel is formed between the cover plate 222 and the base plate. The height of the material transfer channel is slightly greater than the thickness of the fixed ring, so that the fixed ring can slide horizontally within the material transfer channel.

[0059] The cover plate 222 is provided with a first through hole 223 and a second through hole 224. Both the first through hole 223 and the second through hole are through holes that penetrate the cover plate 222 in a vertical direction. The first through hole 223 is used to allow the fixing ring to fall into the transfer channel from above. The second through hole 224 is used to allow the fixing ring to move to the disassembly position in the transfer channel. A corresponding third through hole 225 is provided on the lower side of the second through hole 224. The third through hole 225 penetrates the bottom plate 221 and is aligned with the second through hole 224 in a vertical direction. The third through hole is used to allow the disassembled inner ring and outer ring to fall down through the bottom plate to the lower side of the bottom plate.

[0060] The fixed ring storage rack 21 is located above the first through hole 223. The fixed rings in the material rack 226 (i.e., the bottom outlet of the fixed ring storage rack 21) move from the first through hole 223 to the material transfer channel under the action of gravity. Specifically, the fixed rings are stacked in the material rack 226, and the bottom fixed ring enters the material transfer channel at the first through hole 223. The material transfer channel is provided with a first pushing structure 227. The first pushing structure 227 is used to horizontally push the fixed ring located at the first through hole 223 to the second through hole 224. The first pushing structure 227 can be a cylinder-driven push plate structure or a spiral pushing structure.

[0061] A splitting structure 228 is provided at the second through hole 224. The splitting structure 228 is used to split the fixing ring into an inner ring and an outer ring. Specifically, the splitting structure 228 may include: a splitting cylinder disposed above the second through hole 224. The splitting cylinder is fixed on the upper side of the cover plate. The piston rod of the splitting cylinder extends to the upper side of the second through hole 224. That is, when the fixing ring moves to the position of the second through hole 224, its outer ring is pushed and the inner ring is located inside the second through hole 224. The piston rod of the splitting cylinder is located on the upper side of the inner ring. When the piston rod of the splitting cylinder extends, it directly acts on the inner ring, thereby causing the inner ring to detach from the middle of the outer ring and fall from the position of the third through hole 225 to the lower side of the bottom plate.

[0062] To ensure the outer ring is supported when separated from the inner ring, and also to allow it to be transferred to the underside of the base plate, a movable support structure 2210 is required. Specifically, a support structure is provided below the second through hole 224. This support structure includes a moving block 22101, which moves in and out of the second through hole 224. The moving block 22101 has an upper step 22102 and a lower step 22103. The upper step 22102 is flush with the second through hole 224 and is used to receive material from the transfer. The fixed ring that moves into the channel is positioned at the second through hole 224 when the fixed ring is disassembled. The lower step is flush with the guide rail and is used to receive the inner ring that falls from the third through hole 225. At this time, the outer side of the moving block is equipped with a cylinder for controlling the movement of the moving block 22101. By controlling the moving block 22101 to move in and out toward the center of the second through hole 224, the bearing of the outer ring when it is under pressure, the bearing of the inner ring when it is detached, and the transfer of the outer ring from the third through hole 225 to the lower side of the base plate 221 are achieved.

[0063] After the inner ring falls from the third through hole 225 to the lower step 22103, it moves along the guide rail 229 to the inner ring storage position 2211 under the action of the second pushing structure 2212. At this time, the second pushing structure is the same as the first pushing structure. It can be a cylinder-driven push plate structure or a spiral pushing structure. When the ring-shifting die expansion lower platform 3 moves to the lower side of the base plate 221, the outer ring platform 31 and the inner ring platform 32 are located below the third through hole 225 and the inner ring storage position 2211, respectively. That is, the outer ring platform 31 receives the outer ring directly below the third through hole 225 (the outer ring remains at the lower step 22102 on the moving plate of the second through hole 224 after disassembly), and the inner ring platform 32 receives the inner ring directly below the inner ring storage position 2211.

[0064] At this time, by forming a material transfer channel between the cover plate 222 and the base plate 221, and in conjunction with the first pushing structure 227 and the splitting structure 228, the automatic feeding, positioning and splitting of the fixed ring are realized. The support structure 2210 cleverly completes the switching between the fixed ring support and the inner ring receiving functions through the upper step 22102 and the lower step 22103 on a moving block 22101, reducing the number of parts and making the structure more compact. The setting of the guide rail 229 and the inner ring storage position 2211 enables the inner ring and the outer ring to be transferred to the precise position after splitting, and achieves precise docking with the outer ring platform 31 and the inner ring platform 32 of the moving ring expansion die lower platform 3. The entire ring splitting and loading process is completed automatically, improving the overall automation level and production efficiency of the expansion die machine.

[0065] The purpose of setting the inner ring storage position 2211 is to achieve time synchronization between the inner ring and the outer ring (when the outer ring falls from the third through hole 225, the inner ring is already waiting in the storage position), so that when the ring-shifting die expansion platform 3 retrieves the ring, the inner ring and the outer ring can be retrieved simultaneously, saving retrieval time. At this time, the inner ring storage position 2211 also includes a stepped moving plate 411. A cylinder is provided on the outer side of the moving plate 411. There are two moving plates 411, which are aligned with the guide rails 229 respectively. In this way, the inner ring can be moved to the position of the moving plate through the guide rails 229. Then, when it is necessary to transfer the inner ring to the inner ring platform 32, the inner ring platform 32 first moves upward to the lower side of the inner ring, and then the cylinder controls the moving plate 411 to move outward, so that the inner ring is accurately transferred to the upper side of the inner ring platform, and the accuracy of the inner ring after being transferred to the position of the inner ring platform 32 can be guaranteed.

[0066] During the crystal expansion and pressing process, the blue film (i.e., the thin film with grains) is tensioned and fixed between the inner and outer rings. After the crystal expansion is completed, the central area of ​​the blue film (i.e., the effective area with grains) is removed with the finished product. However, a ring of waste blue film (or waste film, edge material) remains between the inner and outer rings. This waste blue film is tightly attached to the inner and outer rings. The outer and inner rings need to be recycled and reused after the crystal expansion is completed. Therefore, the waste blue film must be separated from the outer and inner rings. At the same time, the waste blue film is a thin film material and is easy to disperse during the separation process. A guiding structure 2212 needs to be set to discharge it in an orderly manner.

[0067] Thus, in one embodiment, the upper side of the base plate is also provided with a guide structure. The guide structure 2212 includes a vertical cylinder 22121 fixed to the upper side of the cover plate 222 by a bracket. The piston rod of the vertical cylinder 22121 is fixed with a guide plate 22122. The guide plate 22122 is generally conical. The guide plate 22122 moves up and down at the positions of the second through hole 224 and the third through hole 225. The lower side of the guide plate 22122 is provided with a pressure rod 22123. The pressure rod 22123 is located on the upper side of the center of the third through hole 225. The outer ring platform 31 of the ring-shifting expansion lower platform 3 is provided with a waste film hole 33 corresponding to the pressure rod 22123. When the pressure rod 22123 moves downward, the pressure rod 22123 separates the waste blue film from the outer ring and inserts it into the lower side of the ring-shifting expansion lower platform 3 from the waste film hole 33.

[0068] Specifically, the upper side of the base plate 221 is also provided with a guide structure 2212. The guide structure 2212 includes a vertical cylinder 22121 fixed to the upper side of the cover plate by a bracket. The piston rod of the vertical cylinder 22121 is fixed with a guide plate 22122. The guide plate 22122 is generally conical. Specifically, the guide plate 22122 gradually slopes downward from the edge to the center, and is generally truncated cone-shaped (i.e., smaller at the top and larger at the bottom). The guide plate 22122 moves up and down at the positions of the second through hole 224 and the third through hole 225. When the guide plate 22122 moves downward to abut against the outer ring platform 31, its conical outer surface can guide the outer ring to the upper side of the outer ring platform. This allows the outer ring to move accurately to the position of the outer ring platform 31. At the same time, a pressure rod 22123 is provided on the lower side of the guide plate 22122. The pressure rod 22123 is vertically set and located on the upper side of the center of the third through hole 225. The pressure rod 22123 is fixedly connected to the guide plate 22122 and moves up and down with the guide plate 22122. The outer ring platform 31 of the ring expansion lower platform 3 is provided with a waste film hole 33 corresponding to the pressure rod 22123 in the middle. The waste film hole 33 is a through hole that penetrates the center of the outer ring platform 31. Its diameter is larger than the diameter of the pressure rod 22123 and smaller than the inner diameter of the outer ring (at this time, the waste film hole 33 is 5mm larger than the diameter of the pressure rod 22123).

[0069] After the inner and outer rings are separated and moved to their preset positions, the ring-shifting expansion die-expanding lower platform 3 moves to the lower side of the base plate 221. At this time, the outer ring platform is located directly below the third through hole 225, and the inner ring platform 32 is located below the inner ring storage position 2211. The vertical cylinder extends, and the guide plate 22122 and the pressure rod 22123 move downward. The pressure rod 22123 first contacts the central area of ​​the waste blue film and pushes the waste blue film downward to separate it from the outer ring. After the center of the waste blue film is pushed away from the surface of the outer ring by the pressure rod 22123, it continues to move under the action of the pressure rod 22123. When the lower side of the pressure rod 22123 passes through the waste film hole of the outer ring platform 31, the waste blue film moves simultaneously to the lower side of the ring-shifting expansion die-expanding lower platform 3 (a waste collection box is provided below) under the action of the pressure rod 22123. Then the outer ring can be accurately moved to the upper side of the outer ring platform 31 through the guide plate 22122.

[0070] At this time, the waste blue film is collected by pressing down through the waste film hole 33 by the pressure rod 22123. There are several elastic elements made of silicone or rubber inside the waste film hole 33. When the pressure rod moves upward, the elastic elements abut against the surface of the pressure rod 22123 to prevent the waste blue film from moving out with the pressure rod 22123. That is, the waste blue film is restricted to the lower side of the ring expansion platform 3, which makes it easier to collect the waste blue film. Moreover, when the waste blue film is separated from the outer ring by the pressure rod 22123 and passes through the waste film hole 33, the waste blue film is also deformed and kneaded. In this way, the waste blue film is not easy to float around when it is stored, and the collection effect is better.

[0071] By setting a conical guide plate 22122 and a pressure rod 22123 located in the center, the automatic separation and guided discharge of waste blue film is realized. The pressure rod 22123 pushes the waste blue film away from the outer ring from the center, so that the waste blue film can pass smoothly through the waste film hole 33 of the outer ring stage 31 and be discharged, thus avoiding the separation of waste blue film from the outer ring and the collection of waste blue film. At the same time, the entire separation process is carried out synchronously with the ring transfer action after crystal expansion, without adding extra process time, improving the operating efficiency of the equipment. Moreover, the waste film hole 33 is located in the middle of the outer ring stage 31, utilizing the central through hole structure of the outer ring itself, without the need to add extra space for the waste film channel.

[0072] The upper expansion mechanism 4 needs to move the upper expansion mold 41 downward at the pressing position, first transferring the outer ring to the upper expansion mold 41, and then cooperating with the lower expansion platform 3 to complete the blue film expansion. At the same time, after the expansion is completed, the iron ring and the finished product need to be transferred to the discharge position 500.

[0073] In one embodiment, the die expansion upper mechanism 4 includes an upper template 42 fixed by a bracket. The die expansion upper mold 41 is connected to the upper template 42 by a guide rail slider structure. The die expansion upper mold 41 includes a movable plate 411 located on the lower side of the upper template. The movable plate is fixed to the lower side of the upper template 42 by the guide rail slider. A pressing upper mold 412 is provided on the lower side of the movable plate 411. The pressing upper mold 412 is provided with a buckle for fixing the inner ring. An upper cylinder is provided on the upper side of the movable plate 411 to drive the pressing upper mold 412 to move up and down. A pressing plate 415 is connected to the lower side of the movable plate by a pressing cylinder. A communicating hole corresponding to the inner ring platform 32 is provided in the middle of the pressing plate 415. An iron ring suction cup 416 is provided around the communicating hole of the pressing plate 415. The iron ring suction cup 416 extends to the lower side of the pressing plate 415.

[0074] Specifically, the die expansion upper mechanism 4 includes an upper template 42 fixed by a bracket. The upper template 42 is horizontally fixed and serves as the overall support for the die expansion upper mold. The die expansion upper mold 41 and the upper template 42 are connected by a guide rail slider structure. The guide rail slider structure includes a guide rail fixed to the lower side of the upper template 42 and a slider fixed to the die expansion upper mold 41. The guide rail extends longitudinally, allowing the die expansion upper mold 41 to slide longitudinally relative to the upper template 42.

[0075] The die expansion mold includes a movable plate located below the upper template. The movable plate is fixed to the lower side of the upper template 42 by a guide rail slider structure, thereby allowing the movable plate 411 to move longitudinally. The lower side of the movable plate 411 is provided with a pressing upper mold 412. The pressing upper mold 412 has a circular structure and is used to press the blue film downward during die expansion pressing. The pressing upper mold 412 is provided with a buckle for fixing the inner ring. The buckle is a plurality of elastic claws distributed along the outer periphery of the pressing upper mold 412. When the pressing upper mold 412 is pressed down to the outer ring platform 31, the buckle pops out in the direction of the outer ring and locks the outer ring. At this time, the number of buckles 413 is preferably three or four, evenly distributed along the circumference.

[0076] The upper side of the movable plate 411 is provided with an upper cylinder 414 that drives the upper pressing mold 412 to move up and down. The cylinder body of the upper cylinder 414 is fixed to the upper side of the movable plate 411, and its piston rod passes through the movable plate 411 and is fixedly connected to the upper pressing mold 412. The upper cylinder 414 is used to control the up and down movement of the die expansion mold 41 and to remove the outer ring from the outer ring platform 31. The lower side of the movable plate 411 is connected to a pressing plate 415 through a pressing cylinder. The cylinder body of the pressing cylinder is fixed to the lower side of the movable plate, and its piston rod is fixedly connected to the pressing plate 415. The pressing plate 415 has a connecting hole in the middle. A plate-shaped structure is located on the periphery of the pressing upper mold 412. The middle of the pressing plate 415 is provided with a connecting hole corresponding to the inner ring platform 32. The diameter of the connecting hole is larger than the diameter of the inner ring platform 32, so as not to affect the up and down movement of the expanding die 41. Iron ring suction cups 416 are provided around the connecting hole of the pressing plate 415. The iron ring suction cups 416 are vacuum suction cups, and their lower ends extend to the lower side of the pressing plate 415. There are multiple iron ring suction cups 416, which are evenly distributed along the circumference of the connecting hole and are used to adsorb the upper surface of the iron ring. The iron ring suction cups 416 are connected to a vacuum source (not shown in the figure) through a pipeline.

[0077] Before the die expansion and pressing, when the iron ring is transferred to the upper side of the inner ring platform 32 of the die expansion lower platform 3, the outer ring platform 31 of the die expansion lower platform 3 is exactly located on the lower side of the die expansion lower mold (that is, the pressing position). The upper die expansion upper mold 41 is controlled by the upper cylinder 414 to move downward, so that the outer ring at the position of the outer ring platform 31 is transferred to the lower side of the die expansion upper mold 41. Then the die expansion lower platform 3 moves, so that the inner ring platform 32 moves to the lower side of the die expansion upper mold 41. The clamping cylinder extends, the clamping plate moves downward, and the clamping plate 415 presses the iron ring on the upper side of the die expansion lower platform 3. Then the inner ring platform 32 moves upward, lifting the blue film to perform die expansion. (Blue film deformation) After the inner ring stage moves upward to a certain distance, the expanded crystal upper film moves downward to the inner ring stage 32, thereby making the inner ring and outer ring snap together, thus realizing the positioning of the expanded crystal blue film. Then, the blue film is cut off by the cutter at the position of the inner ring stage 32. In this way, the blue film is separated into the circular part between the inner ring and the outer ring, as well as the annular residual film in the inner ring of the iron ring. The iron ring is attracted and fixed by the suction cup of the clamping plate 415. In this way, the iron ring (with the annular residual film) is located on the lower side of the clamping plate 415. The inner ring and the outer ring clamp the expanded crystal blue film and are located on the lower side of the expanded crystal upper mold. Then, it is moved to the discharge position 500 by the guide rail slider.

[0078] By setting a buckle 413 on the pressing mold 412, the outer ring is transferred before the crystal expansion process, and the transfer is completed synchronously with the transfer of the iron ring. By setting an iron ring suction cup 416 on the pressing plate 415, the pressing, adsorption and transfer of the iron ring are realized, so that the iron ring can be sent to the discharge position 500 together with the inner ring, outer ring and blue film. The independent drive of the pressing plate and the pressing mold 412 (controlled by the pressing cylinder and the upper cylinder 414 respectively) allows the pressing action and the adsorption action to be controlled in sequence separately without interference. The whole structure is compact and integrates multiple functions such as outer ring transfer, pressing, iron ring adsorption and moving discharge into one unit, saving equipment space.

[0079] The iron ring storage rack 11 needs to store a large number of iron rings and achieve automatic continuous feeding of iron rings. In the prior art, the iron ring storage rack 11 usually adopts a single material rack structure. When the iron rings in the material rack are used up, the machine needs to be stopped to replenish the material, which affects the production efficiency. At the same time, the iron ring frame (i.e., the tray that carries the iron rings) needs to be manually removed and the empty frame replaced after use, which increases the labor intensity. Therefore, there is a need to provide a double-layer iron ring storage rack 11 structure that can realize automatic feeding, positioning and discharging of iron ring frames to reduce manual intervention. In one embodiment, the iron ring storage rack 11 includes a feeding rack 111 and a discharging rack 112 distributed in two layers. The feeding rack 111 is provided with a lifting structure 11 at its end. 3. The lifting structure 113 includes a lifting cylinder 1131 located at the bottom of the feeding rack 111. The piston rod of the lifting cylinder is provided with a top plate 1132. The top plate moves up and down on the upper side of the feeding rack 226. The feeding rack 111 is provided with a push-out structure 114, which is used to push the iron ring frame on the upper side of the feeding rack 111 to the upper side of the top plate 1132 of the lifting structure 113. The top plate 1132 is provided with a push-back structure 115. When the top plate 1132 is flush with the discharge rack 226, the push-back structure 115 pushes the iron ring frame on the upper side of the top plate 1132 to the discharge rack.

[0080] The iron ring storage rack 11 includes a double-layered discharge rack 112 and a feed rack 111. The feed rack 111 is located on the lower layer and is used to store iron ring frames that are full of iron rings and ready for use. The discharge rack 226 is located on the upper layer and is used to store empty iron ring frames that have been used. The end of the feed rack 111 is provided with a lifting structure 113. The lifting structure 113 includes a lifting cylinder 1131 located at the bottom of the feed rack 111. The cylinder body of the lifting cylinder 1131 is fixed to the bottom support of the feed rack 111, and its piston rod extends vertically upward. The piston rod of 31 is provided with a top plate 1132. The top plate 1132 moves up and down on the upper side of the feed rack 111. The top plate 1132 is a horizontal plate structure used to support the iron ring frame. When the iron ring frame moves from the feed rack 111 to the position above the top plate 1132, it gradually rises under the action of the lifting structure 113, which facilitates the iron ring moving structure 12 to take out the iron rings at the corresponding height positions one by one. After all the iron rings are taken out, the empty iron ring frame is exactly flush with the discharge rack 112, which facilitates its movement to the position of the discharge rack 226.

[0081] At this time, the feeding rack 226 is equipped with a push-out structure 114, which is used to push the iron ring frame on the upper side of the feeding rack 111 to the upper position of the top plate of the lifting structure 113. The push-out structure 114 can be a cylinder-driven push rod, or a conveyor belt or screw push method. The top plate 1132 is equipped with a push-back structure 115, which is used to push the empty iron ring frame back from the top plate 1132 to the discharge rack 112. The push-back structure 115 can be a cylinder push rod or a claw mechanism. When the top plate is flush with the discharge rack, the push-back structure 115 pushes the iron ring frame on the upper side of the top plate to the discharge rack.

[0082] The double-layered feeding rack 111 and discharging rack 112 enable automatic feeding of fully loaded iron ring frames and automatic recycling of empty iron ring frames without manual intervention. The lifting structure 113 switches between the material pick-up position and the material discharge position 500, allowing the iron ring frames to be transferred from the feeding rack 111 to the discharging rack 112, thus completing the automatic circulation of the iron ring frames. At the same time, the lifting structure 113 controls the height of the iron ring frames, and also facilitates the removal of iron rings at different heights by the iron ring moving structure 12. Compared with the single material rack 226 structure, this embodiment greatly reduces the frequency of manual material replenishment and frame recycling, reduces the intensity of manual labor, and increases the continuous operation time of the equipment.

[0083] The iron ring moving structure 12 needs to remove the iron rings one by one from the iron ring frame of the iron ring storage rack 11 and transfer them to the iron ring loading position 100, and then remove them by the moving ring expansion die lower platform 3. Since the iron rings are thin-walled metal rings, they are easily deformed during the picking and placing process, and the iron rings are stacked tightly. It is necessary to prevent multiple iron rings from being picked up at once when picking up the material. This embodiment aims to provide an iron ring moving structure 12 that can accurately grasp a single iron ring, prevent deformation, and accurately position it to the iron ring loading position 100. At this time, the iron ring moving structure 12 includes a double-headed cylinder 121 fixed by a bracket. The two moving ends of the double-headed cylinder 121 are provided with guide plates 22122. A linear moving module is provided on the outer side of the guide plate. The moving end of the linear moving module is connected to a feeding cylinder 123. The feeding cylinder 123 is a finger cylinder. The moving end of the finger cylinder is fixed with a feeding gripper 124. The feeding gripper 124 takes the iron ring out from the position of the iron ring storage rack 11 and moves it to the upper side of the guide plate 22122. When the ring-shifting and die-expanding lower platform 3 moves to the lower side of the guide plate 22122, the guide plate 22122 moves outward under the action of the double-headed cylinder 121, and the iron ring is transferred to the upper side of the inner ring platform 32 of the ring-shifting and die-expanding lower platform 3.

[0084] Specifically, the iron ring moving structure 12 includes a double-headed cylinder 121 fixed by a bracket. The double-headed cylinder 121 is a double-piston rod cylinder, and its two moving ends move laterally relative to each other. The cylinder body of the double-headed cylinder is fixed on the bracket. The two moving ends of the double-headed cylinder 121 are provided with guide plates 22122. The guide plates 22122 are two oppositely arranged plate-like structures, which are respectively fixed on the two moving ends of the double-headed cylinder 121. The two guide plates 22122 form a positioning space for the iron ring. When the double-headed cylinder 121 extends, the two guide plates 22122 move closer to each other and can clamp the iron ring in the middle. When the double-headed cylinder 121 retracts, the two guide plates 22122 move away from each other and release the iron ring, that is, the iron ring is transferred from the guide plates 22122 to the inner ring platform 32 position.

[0085] At this time, in order to move the iron ring from the iron ring frame to the guide plate 22122, a linear motion module is provided on the outside of the guide plate 22122. The linear motion module is arranged longitudinally (perpendicular to the direction of action of the double-headed cylinder 121). The moving end of the linear motion module is connected to the feeding cylinder 123 through the bracket. The linear motion module is used to drive the feeding cylinder 123 to move back and forth between the iron ring storage rack 11 and the iron ring loading position 100. The feeding cylinder 123 is a finger cylinder. Its two moving ends are fixed with feeding claws 124 for clamping the iron ring. After clamping the iron ring, the feeding claws 124, under the action of the linear motion module, take the iron ring out from the iron ring frame along the direction of the guide plate 22122 and move it to the upper position of the guide plate 22122.

[0086] After the inner ring stage 32 of the ring-shifting expansion lower platform 3 moves to the lower side of the guide plate 22122, the inner ring stage 32 moves upward and comes into contact with the iron ring. Then the guide plate 22122 moves outward, thereby realizing the transfer of the iron ring.

[0087] At this time, the iron ring is gripped by the feeding claw 124, and the iron ring is transferred from the storage rack to the guide plate 22122 in conjunction with the linear motion module. The guide plate 22122 moves under the drive of the double-headed cylinder 121, realizing the movement positioning and separation positioning of the iron ring, so that the iron ring can fall accurately to the predetermined position on the inner ring platform 32.

[0088] The ring-shifting die expansion platform 3 needs to support the inner ring stage 32 and the outer ring stage 31, and move laterally between multiple workstations. At the same time, the inner ring stage 32 needs to withstand a large downward pressure during die expansion and pressing, and needs to be able to move up and down to avoid or cooperate with other mechanisms when picking up and putting down the inner ring. In one embodiment, the ring-shifting die expansion platform 3 includes a lateral movement module. The upper side of the lateral movement module is provided with a ring-shifting body 34. The inner ring stage 32 and the outer ring stage 31 are located in the middle of the upper side of the ring-shifting body 34. The lower side of the inner ring stage 32 is provided with a lifting structure 35 for controlling the up and down movement of the inner ring stage 32. The inner ring stage 32 and the outer ring stage 31 are respectively provided with positioning steps corresponding to the inner ring and the outer ring.

[0089] The moving ring expansion platform 3 includes a horizontal moving module, which is arranged horizontally. The moving end of the module is fixed with the moving ring body 34. The horizontal moving module can be a lead screw guide module driven by a servo motor to achieve precise stepping positioning. Both the inner ring platform 32 and the outer ring platform 31 are circular boss structures. The inner ring platform is used to support the inner ring, and its outer diameter is adapted to the inner diameter of the inner ring, that is, the inner ring is fitted on the inner ring platform 32. The outer ring platform 31 is used to support the outer ring, and its outer diameter is adapted to the inner diameter of the outer ring, that is, the inner ring platform 32 and the outer ring platform 31 are respectively provided with positioning steps corresponding to the inner ring and the outer ring. The lower side of the inner ring platform 32 is provided with a lifting structure 35 for controlling the up and down movement of the inner ring platform 32. The lifting structure 35 includes a lifting cylinder and a guide rod. At the same time, a platform for placing an iron ring is also provided on the outer side of the inner ring platform 32. When the iron ring is placed on the upper side of the inner ring platform 32, the iron ring part is located on the outer side of the inner ring platform 32. In this way, when the clamping plate 415 clamps the iron ring, it will not affect the up and down movement of the inner ring platform 32 in the middle of the iron ring / clamping plate 415, and thus will not affect the crystal expansion process.

[0090] 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.

[0091] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fully automatic crystal expansion machine, characterized in that, include The iron ring feeding mechanism includes an iron ring storage rack, an iron ring moving structure, and an iron ring feeding position. The ring-disassembly and feeding mechanism includes a fixed ring storage rack and a ring-disassembly structure. The ring-disassembly structure has horizontally distributed inner ring feeding positions and outer ring feeding positions. The ring-disassembly structure splits the fixed ring into an inner ring and an outer ring, and moves them to the inner ring feeding position and the outer ring feeding position, respectively. The ring-shifting die expansion platform includes the laterally moving outer ring stage and the inner ring stage. The die expansion upper mechanism, located above the transfer ring platform, includes a die expansion upper die, which moves longitudinally between the pressing position and the discharge position via a longitudinal moving structure. The iron ring loading position, pressing position, inner ring loading position, and outer ring loading position are arranged sequentially from left to right to form an inner transverse station. The outer ring platform and inner ring platform of the ring-shifting and crystal expansion lower platform move under two adjacent inner transverse stations. The discharge position is provided with an iron ring receiving mechanism and a finished product receiving mechanism on both sides. A discharge moving mechanism is provided between the iron ring receiving mechanism and the finished product receiving mechanism. The discharge moving mechanism includes a residual film tearing structure, which is used to tear off the annular residual film remaining on the inside of the iron ring and pull it into a straight line.

2. The fully automatic crystal expansion machine according to claim 1, characterized in that, The discharge moving mechanism includes a lateral moving module. The moving end of the lateral moving module is provided with a connecting plate. The outer side of the connecting plate is provided with a push ring structure and a finished product moving structure. The film tearing structure is located between the push ring structure and the iron ring receiving mechanism and moves synchronously with the push ring structure. The iron ring receiving mechanism, the discharge position, and the finished product receiving mechanism are distributed from left to right to form an outer lateral station. The film tearing structure and the finished product moving structure move under two adjacent outer lateral stations.

3. The fully automatic crystal expansion machine according to claim 2, characterized in that, The film-tearing structure is fixed to the vertical film-tearing cylinder of the connecting plate. The piston rod of the vertical film-tearing cylinder is connected to the horizontal film-clamping cylinder. The moving end of the horizontal film-clamping cylinder is equipped with a film-clamping claw. A pulling cylinder is provided on the outside of the iron ring receiving mechanism. The piston rod of the pulling cylinder is equipped with a pull rod. The iron ring is pushed to the iron ring receiving mechanism under the action of the push ring structure. The film-clamping claw of the horizontal film-clamping cylinder moves to the inside of the iron ring and clamps the residual film. The horizontal moving module and the vertical film-tearing cylinder control the film-clamping claw to move outward. The residual film gradually separates from the iron ring. The separated residual film is gradually moved out from the lower side of the pull rod to the outside of the iron ring receiving mechanism. When the film-clamping claw moves to the outside of the pull rod, the pull rod moves down and inserts into the inner side of the separated residual film ring. The distance between the pull rod and the film-clamping claw gradually increases, and the residual film is pulled into a straight line.

4. The fully automatic crystal expansion machine according to claim 3, characterized in that, The iron ring receiving mechanism includes a side baffle, with the receiving iron ring and the pulling cylinder located on the inner and outer sides of the side baffle, respectively. A guide wheel is provided on the lower side of the side baffle. The iron ring enters the inner side of the side baffle from the lower side of the guide wheel. When the residual film is completely peeled off from the lower side of the iron ring, the last separated residual film is stuck on the outer side of the pull rod.

5. The fully automatic crystal expansion machine according to any one of claims 1 to 4, characterized in that, The ring-disassembly and feeding mechanism includes a base plate, with a cover plate on the upper side of the base plate. A material transfer channel is formed between the cover plate and the base plate. The cover plate has a first through hole and a second through hole. A corresponding third through hole is provided below the second through hole. A material rack is provided above the first through hole of the fixed material rack. The fixed ring in the material rack moves from the first through hole to the material transfer channel. A first pushing structure is provided in the material transfer channel to move the fixed ring from the first fixed through hole to the second through hole. A splitting structure is provided at the second through hole to split the fixed ring into an inner ring and an outer ring. The inner ring is connected by a first pushing structure. The three-way hole moves to the lower side of the base plate. The lower side of the base plate is provided with a guide rail, a second pushing structure and an inner ring storage position. The lower side of the second through hole is provided with a support structure. The support structure includes a moving block that moves in and out at the position of the second through hole. The moving block is provided with an upper step flush with the upper side of the base plate and a lower step flush with the guide rail. The inner ring falls from the position of the third through hole to the position of the lower step and moves to the inner ring storage position under the action of the second pushing structure. When the moving ring die expansion lower platform moves to the lower side of the base plate, the outer ring platform and the inner ring platform are located below the third through hole and the inner ring storage position, respectively.

6. The fully automatic crystal expansion machine according to claim 5, characterized in that, The upper side of the base plate is also provided with a guide structure, which includes a vertical cylinder fixed to the upper side of the cover plate by a bracket. The piston rod of the vertical cylinder is fixed with a guide plate. The guide plate is generally conical. The guide plate moves up and down at the second through hole and the third through hole. A pressure rod is provided on the lower side of the guide plate. The pressure rod is located on the upper side of the center of the third through hole. The outer ring platform of the ring-shifting expansion platform is provided with a waste film hole corresponding to the pressure rod. When the pressure rod moves downward, the pressure rod separates the waste blue film from the outer ring and inserts it into the lower side of the ring-shifting expansion platform from the waste film hole.

7. The fully automatic crystal expansion machine according to any one of claims 1 to 4, characterized in that, The die expansion upper mechanism includes an upper template fixed by a bracket. The die expansion upper mold and the upper template are connected by a guide rail slider structure. The die expansion upper mold includes a movable plate located on the lower side of the upper template. The movable plate is fixed to the lower side of the upper template by the guide rail slider. A pressing upper mold is provided on the lower side of the movable plate. The pressing upper mold is provided with a buckle for fixing the inner ring. An upper cylinder is provided on the upper side of the movable plate to drive the pressing upper mold to move up and down. A pressing plate is connected to the lower side of the movable plate by a pressing cylinder. A communicating hole corresponding to the inner ring platform is provided in the middle of the pressing plate. An iron ring suction cup is provided around the communicating hole of the pressing plate. The iron ring suction cup extends to the lower side of the pressing plate.

8. The fully automatic crystal expansion machine according to any one of claims 1 to 4, characterized in that, The iron ring storage rack includes a double-layered feeding rack and a discharging rack. The feeding rack has a lifting structure at its end. The lifting structure includes a lifting cylinder located at the bottom of the feeding rack. The piston rod of the lifting cylinder has a top plate at its top. The top plate moves up and down on the upper side of the feeding rack. The feeding rack has a push-out structure for pushing the iron ring frame on the upper side of the feeding rack to the upper side of the top plate of the lifting structure. The upper side of the top plate has a push-back structure. When the top plate is flush with the discharging rack, the push-back structure pushes the iron ring frame on the upper side of the top plate to the discharging rack.

9. The fully automatic crystal expansion machine according to any one of claims 1 to 4, characterized in that, The iron ring moving structure includes a double-headed cylinder fixed by a bracket. The two moving ends of the double-headed cylinder are equipped with guide plates. A linear moving module is provided on the outer side of the guide plates. The moving end of the linear moving module is connected to a feeding cylinder, which is a finger cylinder. The moving end of the finger cylinder is fixed with a feeding gripper. The feeding gripper takes the iron ring out of the iron ring storage rack and moves it to the upper side of the guide plate. When the ring-shifting and die-expanding lower platform moves to the lower side of the guide plate, the guide plate moves outward under the action of the double-headed cylinder, and the iron ring is transferred to the upper side of the inner ring platform of the ring-shifting and die-expanding lower platform.

10. The fully automatic crystal expansion machine according to any one of claims 1 to 4, characterized in that, The ring-shifting die expansion platform includes a lateral moving module. The upper side of the lateral moving module is provided with a ring-shifting body. The inner ring stage and the outer ring stage are located in the middle of the upper side of the ring-shifting body. The lower side of the inner ring stage is provided with a lifting structure for controlling the up and down movement of the inner ring stage. The inner ring stage and the outer ring stage are respectively provided with positioning steps corresponding to the inner ring and the outer ring.

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