A full-circle reverse-drawing automatic demolding mechanism for eyeglass frames
By designing an automatic demolding mechanism for eyeglass frames with efficient demolding and shock absorption mechanisms, the problems of low demolding efficiency and poor shock absorption in existing technologies have been solved, achieving efficient production and long equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN MOBANG IND TECHNOLOGY CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-06-16
AI Technical Summary
Existing automatic demolding mechanisms for eyeglass frames have low demolding efficiency and poor cushioning and shock absorption, resulting in high production costs and short equipment lifespan, making them unsuitable for small-batch production.
An automatic demolding mechanism was designed, which includes a high-efficiency demolding mechanism and a buffer and shock absorption mechanism. Automatic demolding is achieved by driving the ejector rod and stop rod assembly with a cylinder, and buffer and shock absorption are achieved by buffer plate and shock absorber when the mold frame is closed.
It improves demolding efficiency, reduces production costs, and extends equipment lifespan, making the automatic demolding mechanism more practical and durable.
Smart Images
Figure CN224360627U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of eyeglass frame manufacturing technology, specifically to a mechanism for automatic demolding of eyeglass frames with full-circumference undercut. Background Technology
[0002] Eyeglasses play an increasingly important role in people's lives. Eyeglass frames consist of a frame and temples. However, existing injection molds for eyeglass frames can only injection mold the frame or temples separately. Therefore, two sets of molds are required to produce eyeglass frames. Existing automatic demolding mechanisms require manual removal of the product after injection molding, resulting in low production efficiency, high labor costs, and operation only by men with strong hands. To meet market needs, an automatic demolding mechanism that solves the problem of full-circumference inverted snap-out of eyeglass frames is required.
[0003] Existing automatic demolding mechanisms have high investment and production costs, with a single automated machine costing tens or hundreds of thousands of yuan. The production cycle for a single product is long, making them suitable only for large-volume orders and not for small-batch production. Moreover, the demolding efficiency of existing automatic demolding mechanisms is low, which reduces the efficiency of demolding the molded product and increases the cost of use, making them impractical. In addition, the cushioning and shock absorption effect of existing automatic demolding mechanisms needs further improvement, which reduces the cushioning and shock absorption effect when closing the upper and lower mold frames, thus shortening the service life of the automatic demolding mechanism. Utility Model Content
[0004] The purpose of this utility model is to provide an automatic demolding mechanism for the full circumference of eyeglass frames, thereby addressing the problems mentioned in the background art, such as low demolding efficiency and the need for further improvement in buffering and shock absorption effects.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic demolding mechanism for the full circumference of eyeglass frames with inverted fastening, comprising a cylinder, a top plate on one side of the cylinder, an upper mold frame mounted on the surface of the top plate, a lower mold frame on the side of the upper mold frame away from the top plate, the inner walls of the upper mold frame and the lower mold frame being in contact, a base mounted on the surface of the lower mold frame away from the upper mold frame, an upper mold core and a lower mold core mounted inside the upper mold frame, a product body on the surface of the lower mold core, a hydraulic cylinder fixing block on one side of the upper mold frame, a right stop guide block and a left stop guide block mounted on the surface of one side of the upper mold frame, a high-efficiency demolding mechanism on the surface of the hydraulic cylinder fixing block, and a buffer and shock absorption mechanism on the inner walls of the upper and lower mold frames.
[0006] Preferably, the upper mold frame and the lower mold frame are equipped with circulating cooling pipes. Inlet pipes and outlet pipes are installed on the surfaces of the circulating cooling pipes, respectively, and are connected to the interior of the circulating cooling pipes. A movable plate is installed inside the base. An ejector plate is installed on one side of the movable plate. Springs are installed at the corners of the ejector plate, with one end of each spring fixed to the surface of the lower mold frame. A mold nozzle is installed at the center of the top plate, with one end of the nozzle penetrating the top plate and the upper mold frame and extending into the interior of the upper mold core. The surfaces of the movable plate are all equipped with top... The rod has one end extending into the interior of the lower mold core. A second shim track pin and a first shim track pin are installed inside the lower mold core. A grooved shim is provided inside the lower mold core. Ejector pins are threaded onto the surface of the lower mold core. One end of each ejector pin passes through the rod and is threadedly fastened to the inner wall of the lower mold core. The output end of the cylinder is fixed to the surface of the hydraulic cylinder fixing block. The surface of the hydraulic cylinder fixing block and the surface of the cylinder are fixed together by screws. Ejector bodies are installed on the surface of the moving plate, and hooks are installed on the surface of the moving plate. One end of each hook and ejector body extends into the interior of the lower mold core.
[0007] Preferably, the high-efficiency demolding mechanism comprises a slider seat, a left stop rod body, a right stop rod body, an upper stop rod, a left stop rod silicone sleeve, a lower stop rod body, a lower stop rod silicone sleeve, and a right stop rod silicone sleeve. The slider seat is mounted on the surface of the cylinder fixing block, the right stop rod body is mounted on the surface of the slider seat, the left stop rod body is mounted on the surface of the slider seat away from the right stop rod body, one end of the right stop rod body passes through the right stop rod guide block and is fitted with the right stop rod silicone sleeve, and the right stop rod body and the inner wall of the right stop rod guide block slide against each other.
[0008] Preferably, one end of the left stop lever body passes through the left stop lever guide block and is fitted with a left stop lever silicone sleeve. The left stop lever body and the inner wall of the left stop lever guide block slide against each other. An upper stop lever is mounted on the surface of the slider seat, and a lower stop lever body is mounted on the surface of the slider seat. The lower stop lever body is located below the upper stop lever, and a lower stop lever silicone sleeve is mounted on the surface of the lower stop lever body.
[0009] Preferably, the buffer and shock absorption mechanism consists of a buffer plate, a buffer groove, a shock absorber, and a guide groove. The surface of the upper mold frame is equipped with a buffer plate, and the inner wall of the lower mold frame is provided with a buffer groove. The diameter of the buffer groove is larger than the diameter of the buffer plate, and one end of the buffer plate extends into the interior of the buffer groove.
[0010] Preferably, the inner walls of the buffer grooves are all equipped with shock absorbers, one end of which is fixed to the surface of the buffer plate. The inner walls of the lower mold frame are all provided with guide grooves, which slide in cooperation with the surface of the buffer plate.
[0011] Compared with the prior art, the beneficial effects of this utility model are: the automatic demolding mechanism for the full circumference inverted snap-down of eyeglass frames not only improves the demolding efficiency of the product body after injection molding, making the automatic demolding mechanism more cost-effective and practical, but also improves the buffering and shock absorption effect of the automatic demolding mechanism when closing the upper and lower mold frames, and makes the service life of the automatic demolding mechanism longer.
[0012] 1. Equipped with a high-efficiency demolding mechanism, after the ejector pin pushes the product body inside the lower mold core to a certain height, the cylinder starts, driving the hydraulic cylinder fixing block, slider seat, left stop rod body, right stop rod body, upper stop rod, left stop rod silicone sleeve, lower stop rod body, lower stop rod silicone sleeve, and right stop rod silicone sleeve to move forward together. At this point, the product body has been ejected to the specified distance. Based on the structural characteristics of the product body on the surface of the lower mold core, three specific positions of the ejected product are fixed. The moving plate and ejector plate drive the ejector pin to retract, and under the action of the spring, the product body moves to the specified position. The ejector plate and the moving plate are reset. Under the directional movement of the first and second pad track pins, and with the ejector rod fixed and swinging at the effective ejection angle of the grooved pad, the grooved pad swings out under the specific tracks of the first and second pad track pins, detaching from the product body. Finally, the robot arm takes away the product, realizing the high-efficiency demolding function of the automatic demolding mechanism. This makes the automatic demolding mechanism more efficient in demolding the product body after injection molding, and makes the automatic demolding mechanism more cost-effective and practical.
[0013] 2. By incorporating a buffer and shock absorption mechanism, when the upper and lower mold frames are closed, the upper mold frame drives the buffer plate to move into the buffer groove. The buffer plate presses against the shock absorber inside the buffer groove, causing the shock absorber to contract. At this time, the buffer plate slides inside the guide groove, which guides the buffer plate. Under the action of the guide groove, the shock absorber inside the buffer groove buffers and dissipates the impact force received by the upper and lower mold frames during mold closing, making the upper and lower mold frames more stable during mold closing. This achieves the buffer and shock absorption function of the automatic demolding mechanism, resulting in better buffer and shock absorption when the automatic demolding mechanism closes the upper and lower mold frames, and extending the service life of the automatic demolding mechanism. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2This is a three-dimensional cross-sectional structural diagram of the present invention;
[0016] Figure 3 This is a three-dimensional exploded structural diagram of the present invention;
[0017] Figure 4 This is a top view enlarged cross-sectional structural diagram of the lower mold frame of this utility model;
[0018] Figure 5 This is an enlarged structural schematic diagram of the main cross-section of this utility model;
[0019] Figure 6 This is a three-dimensional enlarged structural diagram of the high-efficiency demolding mechanism of this utility model;
[0020] Figure 7 For the present utility model Figure 5 A three-dimensional enlarged structural diagram of the intermediate buffer shock absorption mechanism.
[0021] In the diagram: 1. Cylinder; 101. Top plate; 102. Mold nozzle; 103. Upper mold base; 104. Lower mold base; 105. Base; 106. Moving plate; 107. Ejector plate; 108. Lower mold core; 109. First shim track pin; 110. Second shim track pin; 111. Upper mold core; 112. Liquid inlet pipe; 113. Liquid outlet pipe; 114. Circulating cooling pipe; 115. Product body; 116. Groove shim; 117. Spring; 118. Right stop guide block; 11 9. Hook; 120. Ejector pin body; 121. Ejector rod; 122. Hydraulic cylinder fixing block; 123. Left stop rod guide block; 124. Ejector pin pin; 2. High-efficiency demolding mechanism; 21. Slider seat; 22. Left stop rod body; 23. Right stop rod body; 24. Upper stop rod; 25. Left stop rod silicone sleeve; 26. Lower stop rod body; 27. Lower stop rod silicone sleeve; 28. Right stop rod silicone sleeve; 3. Buffer and shock absorption mechanism; 31. Buffer plate; 32. Buffer groove; 33. Shock absorber; 34. Guide groove. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] This utility model provides a structure for an automatic demolding mechanism that solves the problem of full-circumference undercutting of eyeglass frames, as follows: Figures 1 to 5As shown, the device includes a cylinder 1, a top plate 101 on one side of the cylinder 1, an upper mold frame 103 mounted on the surface of the top plate 101, a lower mold frame 104 mounted on the side of the upper mold frame 103 away from the top plate 101, the inner walls of the upper mold frame 103 and the lower mold frame 104 in contact, a base 105 mounted on the surface of the lower mold frame 104 away from the upper mold frame 103, an upper mold core 111 mounted inside the upper mold frame 103, a lower mold core 108 mounted inside the upper mold frame 103, a product body 115 mounted on the surface of the lower mold core 108, and a circulation device mounted inside the upper mold frame 103 and the lower mold frame 104. Cooling pipe 114, with an inlet pipe 112 and an outlet pipe 113 installed on its surface. The outlet pipe 113 and the inlet pipe 112 are respectively connected to the interior of the circulating cooling pipe 114. A movable plate 106 is provided inside the base 105. An ejector plate 107 is installed on one side of the movable plate 106. Springs 117 are installed at the corners of the ejector plate 107. One end of the spring 117 is fixed to the surface of the lower mold base 104. A mold nozzle 102 is installed on the surface of the center of the top plate 101. One end of the nozzle 102 passes through the top plate 101 and the upper mold base 103 and extends into the interior of the upper mold core 111. Ejector pins 121 are mounted on the surface of the movable plate 106, with one end of each ejector pin 121 extending into the interior of the lower mold core 108. Second shim track pins 110 and first shim track pins 109 are installed inside the lower mold core 108. Grooved shims 116 are provided inside the lower mold core 108. Ejector pins 124 are threaded onto the surface of the lower mold core 108, with one end of each ejector pin 124 passing through the ejector pin 121 and connecting to the lower mold core 108. The inner wall is threaded and fastened. A cylinder fixing block 122 is provided on one side of the upper mold frame 103. The output end of the cylinder 1 is fixed to the surface of the cylinder fixing block 122. The surface of the cylinder fixing block 122 and the surface of the cylinder 1 are fixed by screws. A right stop rod guide block 118 is installed on one side of the upper mold frame 103. A left stop rod guide block 123 is installed on one side of the upper mold frame 103. Ejector pin bodies 120 are installed on the surface of the moving plate 106. Hooks 119 are installed on the surface of the moving plate 106. One end of the hooks 119 and the ejector pin bodies 120 extend into the interior of the lower mold core 108.
[0024] Furthermore, such as Figure 3 , Figure 4 and Figure 6As shown, the surface of the cylinder fixing block 122 is provided with a high-efficiency demolding mechanism 2. The high-efficiency demolding mechanism 2 consists of a slider seat 21, a left stop rod body 22, a right stop rod body 23, an upper stop rod 24, a left stop rod silicone sleeve 25, a lower stop rod body 26, a lower stop rod silicone sleeve 27, and a right stop rod silicone sleeve 28. The slider seat 21 is mounted on the surface of the cylinder fixing block 122, the right stop rod body 23 is mounted on the surface of the slider seat 21, the left stop rod body 22 is mounted on the side of the slider seat 21 away from the right stop rod body 23, and one end of the right stop rod body 23 passes through the right stop rod. The guide block 118 is fitted with a right stop rod silicone sleeve 28. The right stop rod body 23 slides against the inner wall of the right stop rod guide block 118. One end of the left stop rod body 22 passes through the left stop rod guide block 123 and is fitted with a left stop rod silicone sleeve 25. The left stop rod body 22 slides against the inner wall of the left stop rod guide block 123. An upper stop rod 24 is mounted on the surface of the slider seat 21. A lower stop rod body 26 is mounted on the surface of the slider seat 21. The lower stop rod body 26 is located below the upper stop rod 24. A lower stop rod silicone sleeve 27 is mounted on the surface of the lower stop rod body 26.
[0025] During implementation, after the ejector rod 121 pushes the product body 115 inside the lower mold core 108 to a certain height, the cylinder 1 starts, driving the cylinder fixing block 122, slider seat 21, left stop rod body 22, right stop rod body 23, upper stop rod 24, left stop rod silicone sleeve 25, lower stop rod body 26, lower stop rod silicone sleeve 27, and right stop rod silicone sleeve 28 to move forward together. At this time, they have just moved to the distance the product body 115 has been ejected. Based on the structural characteristics of the product body 115 on the surface of the lower mold core 108, three specific positions of the ejected product are fixed. At this time, the external ejection drive device drives the moving plate 106. The movement of the ejector plate 107 causes the moving plate 106 and the ejector plate 107 to drive the ejector rod 121 to retract. Under the action of the spring 117, the ejector plate 107 and the moving plate 106 are reset. Under the directional movement of the first pad track pin 109 and the second pad track pin 110, plus the fixing and swinging of the ejector rod 121 at the effective ejection angle of the grooved pad 116, the grooved pad 116 swings out under the specific track of the first pad track pin 109 and the second pad track pin 110, and separates from the product body 115. Finally, the robot arm takes away the product to realize the high-efficiency demolding function of the automatic demolding mechanism.
[0026] Furthermore, such as Figure 5 and Figure 7As shown, the inner walls of the upper mold frame 103 and the lower mold frame 104 are provided with a buffer and shock absorption mechanism 3. The buffer and shock absorption mechanism 3 consists of a buffer plate 31, a buffer groove 32, a shock absorber 33, and a guide groove 34. The surface of the upper mold frame 103 is equipped with a buffer plate 31, and the inner wall of the lower mold frame 104 is provided with a buffer groove 32. The diameter of the buffer groove 32 is larger than the diameter of the buffer plate 31. One end of the buffer plate 31 extends into the interior of the buffer groove 32. The inner wall of the buffer groove 32 is equipped with a shock absorber 33. One end of the shock absorber 33 is fixed to the surface of the buffer plate 31. The inner wall of the lower mold frame 104 is provided with a guide groove 34, and the guide groove 34 slides and engages with the surface of the buffer plate 31.
[0027] During implementation, when the upper mold frame 103 and the lower mold frame 104 are closing the mold, the upper mold frame 103 drives the buffer plate 31 to move into the buffer groove 32. The buffer plate 31 presses against the shock absorber 33 inside the buffer groove 32, causing the shock absorber 33 to contract. At this time, the buffer plate 31 slides inside the guide groove 34. Under the action of the guide groove 34, the buffer plate 31 is guided. Under the action of the shock absorber 33 inside the buffer groove 32, the impact force received by the upper mold frame 103 and the lower mold frame 104 during mold closing is buffered and unloaded, making the upper mold frame 103 and the lower mold frame 104 more stable during mold closing, so as to realize the buffering and shock absorption function of the automatic demolding mechanism.
[0028] Working principle: When in use, first install cylinder 1 in the designated position. The injection slurry enters the upper mold core 111 and lower mold core 108 inside the upper mold base 103 and lower mold base 104 through the mold nozzle 102. Coolant is introduced into the circulating cooling pipe 114 through the cylinder fixing block 122. The coolant circulates inside the circulating cooling pipe 114 to cool and shape the product body 115 inside the upper mold core 111 and lower mold core 108. After cooling is completed, the coolant inside the circulating cooling pipe 114 is discharged into the upper mold core 111 and lower mold core 108 through the outlet pipe 113.
[0029] Subsequently, the external ejection drive device drives the moving plate 106 and the ejector plate 107 to move, thereby driving the ejector rod 121 to move upward. The ejector rod 121 drives the grooved gasket 116 to move upward. At this time, the spring 117 is compressed by the moving plate 106 and the ejector plate 107 and contracts. Because the first gasket track pin 109 and the second gasket track pin 110 are fixed in the lower mold core 108, they remain static. When the ejector rod 121 pushes the product body 115 inside the lower mold core 108 to a certain height, the cylinder 1 starts, driving the cylinder fixing block 122, the slider seat 21, the left stop rod body 22, the right stop rod body 23, the upper stop rod 24, the left stop rod silicone sleeve 25, the lower stop rod body 26, the lower stop rod silicone sleeve 27, and the right stop rod silicone sleeve 28 to move forward together. At this time, they have just moved to the distance that the product body 115 has been ejected. According to the structural characteristics of the product body 115 on the surface of the lower mold core 108, After the product is ejected, it is positioned at three specific locations. At this time, the external ejection drive device drives the moving plate 106 and the ejector plate 107 to move, causing the moving plate 106 and the ejector plate 107 to drive the ejector rod 121 to retract. Under the action of the spring 117, the ejector plate 107 and the moving plate 106 are reset. Under the directional movement of the first pad track pin 109 and the second pad track pin 110, plus the fixing and swinging of the ejector rod 121 at the effective ejection angle of the grooved pad 116, the grooved pad 116 swings and breaks off under the specific track of the first pad track pin 109 and the second pad track pin 110, separating it from the product body 115. Finally, the robot arm takes away the product, so as to realize the high-efficiency demolding function of the automatic demolding mechanism. This makes the automatic demolding mechanism more efficient in demolding the product body 115 after injection molding, and makes the automatic demolding mechanism more cost-effective and practical.
[0030] Subsequently, when the upper mold base 103 and lower mold base 104 are closed during injection molding, a certain impact force will be generated. Prolonged use will cause damage to the upper mold base 103 and upper mold core 111, as well as the lower mold core 108 and lower mold base 104. When the upper mold base 103 and lower mold base 104 are closed, the upper mold base 103 drives the buffer plate 31 to move into the buffer groove 32. The buffer plate 31 presses against the shock absorber 33 inside the buffer groove 32, causing the shock absorber 33 to contract. At this time, the buffer plate 31 slides inside the guide groove 34. Under the action of 4, the buffer plate 31 is guided, and under the action of the shock absorber 33 inside the buffer groove 32, the impact force on the upper mold frame 103 and the lower mold frame 104 during mold closing is buffered and unloaded, making the upper mold frame 103 and the lower mold frame 104 more stable during mold closing, so as to realize the buffering and shock absorption function of the automatic demolding mechanism. This makes the buffering and shock absorption effect of the automatic demolding mechanism better when closing the upper mold frame 103 and the lower mold frame 104, and makes the service life of the automatic demolding mechanism longer, thus completing the use of the automatic demolding mechanism.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.
Claims
1. A full circumference inverted automatic demolding mechanism for eyeglass frames, comprising a pneumatic cylinder (1), characterized in that: A top plate (101) is provided on one side of the cylinder (1). An upper mold frame (103) is mounted on the surface of the top plate (101). A lower mold frame (104) is provided on the side of the upper mold frame (103) away from the top plate (101). The upper mold frame (103) is in contact with the inner wall of the lower mold frame (104). A base (105) is mounted on the surface of the lower mold frame (104) away from the upper mold frame (103). An upper mold core (111) is installed inside the upper mold frame (103). A lower mold core (111) is installed inside the upper mold frame (103). The mold core (108) has a product body (115) on its surface. A cylinder fixing block (122) is provided on one side of the upper mold frame (103). A right stop rod guide block (118) is installed on one side of the upper mold frame (103). A left stop rod guide block (123) is installed on one side of the upper mold frame (103). A high-efficiency demolding mechanism (2) is provided on the surface of the cylinder fixing block (122). A buffer and shock absorption mechanism (3) is provided on the inner walls of the upper mold frame (103) and the lower mold frame (104).
2. The automatic demolding mechanism for the full circumference undercutting of eyeglass frames according to claim 1, characterized in that: The upper mold frame (103) and lower mold frame (104) are equipped with circulating cooling pipes (114). An inlet pipe (112) and an outlet pipe (113) are installed on the surface of the circulating cooling pipes (114). The outlet pipe (113) and the inlet pipe (112) are respectively connected to the interior of the circulating cooling pipes (114). A movable plate (106) is provided inside the base (105). The movable plate (106) has a surface on one side... A top plate (107) is mounted on the surface of the mold base (104). Springs (117) are installed at the corners of the top plate (107). One end of each spring (117) is fixed to the surface of the lower mold base (104). A mold nozzle (102) is mounted on the surface of the center of the top plate (101). One end of the mold nozzle (102) passes through the top plate (101) and the upper mold base (103) and extends into the interior of the upper mold core (111). Top plates (106) are mounted on the surface of the moving plate (106). The ejector rod (121) extends one end into the interior of the lower mold core (108). A second shim track pin (110) is installed inside the lower mold core (108). A first shim track pin (109) is installed inside the lower mold core (108). A grooved shim (116) is provided inside the lower mold core (108). Ejector pins (124) are threaded onto the surface of the lower mold core (108). One end of the ejector pin (124) passes through the ejector rod (121). And is threadedly fastened to the inner wall of the lower mold core (108). The output end of the cylinder (1) is fixed to the surface of the oil cylinder fixing block (122). The surface of the oil cylinder fixing block (122) and the surface of the cylinder (1) are fixed by screws. The surface of the moving plate (106) is equipped with ejector bodies (120). The surface of the moving plate (106) is equipped with hooks (119). One end of the hooks (119) and the ejector bodies (120) extend into the interior of the lower mold core (108).
3. The automatic demolding mechanism for the full circumference undercut of eyeglass frames according to claim 1, characterized in that: The high-efficiency demolding mechanism (2) is composed of a slider seat (21), a left stop rod body (22), a right stop rod body (23), an upper stop rod (24), a left stop rod silicone sleeve (25), a lower stop rod body (26), a lower stop rod silicone sleeve (27), and a right stop rod silicone sleeve (28). The slider seat (21) is mounted on the surface of the cylinder fixing block (122). The right stop rod body (23) is mounted on the surface of the slider seat (21). The left stop rod body (22) is mounted on the side of the slider seat (21) away from the right stop rod body (23). One end of the right stop rod body (23) passes through the right stop rod guide block (118) and is fitted with the right stop rod silicone sleeve (28). The inner walls of the right stop rod body (23) and the right stop rod guide block (118) slide against each other.
4. The automatic demolding mechanism for the full circumference undercutting of eyeglass frames according to claim 3, characterized in that: One end of the left stop rod body (22) passes through the left stop rod guide block (123) and is fitted with a left stop rod silicone sleeve (25). The left stop rod body (22) and the inner wall of the left stop rod guide block (123) slide against each other. An upper stop rod (24) is installed on the surface of the slider seat (21). A lower stop rod body (26) is installed on the surface of the slider seat (21). The lower stop rod body (26) is located below the upper stop rod (24). A lower stop rod silicone sleeve (27) is installed on the surface of the lower stop rod body (26).
5. The automatic demolding mechanism for the full circumference undercut of eyeglass frames according to claim 1, characterized in that: The buffer and shock absorption mechanism (3) consists of a buffer plate (31), a buffer groove (32), a shock absorber (33), and a guide groove (34). The surface of the upper mold frame (103) is equipped with a buffer plate (31), and the inner wall of the lower mold frame (104) is provided with a buffer groove (32). The diameter of the buffer groove (32) is larger than the diameter of the buffer plate (31), and one end of the buffer plate (31) extends into the interior of the buffer groove (32).
6. The automatic demolding mechanism for the full circumference undercutting of eyeglass frames according to claim 5, characterized in that: The inner wall of each buffer groove (32) is equipped with a shock absorber (33), one end of which is fixed to the surface of the buffer plate (31). The inner wall of each lower mold frame (104) is provided with a guide groove (34), which slides in cooperation with the surface of the buffer plate (31).