Stamping die for machining VR glasses parts

Abstract

The invention belongs to the technical field of stamping dies, and particularly provides a stamping die used for machining VR glasses parts, the stamping die comprises an upper die plate, an upper die base fixed to the bottom of the upper die plate, a lower die plate and a lower die base fixed to the lower die plate, a cavity is formed in the lower die base, and the cavity is opposite to a mold core at the bottom of the upper die base. The profile shape of the cavity is matched with that of VR glasses, one end of the movable cavity channel is bent upwards in an arc shape and then penetrates through the cavity to be communicated with the bottom face of the cavity, lubricating oil injected into the auxiliary cavity is conveyed to the inner wall of the cavity along the oil channel through the rotating action of the blades, the lubricating oil is smeared on a product piece through the inner wall of the cavity, and therefore the product piece is made to be smooth. After a product piece is formed, the material returning rod is used for pushing the bottom face of the product piece so as to assist the product piece to be ejected outwards from the cavity for material returning, the side face of the product piece is lubricated in a lubricating oil smearing mode, and the material returning efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of mold technology, and in particular to a stamping mold for processing VR glasses parts. Background Art

[0002] VR glasses are a head-mounted display with virtual display function, which consists of VR headset, lenses, mirror cover and straps. VR headset is a product that combines simulation technology, computer graphics, human-computer interface technology, multimedia technology, sensor technology, network technology and other technologies. It is a new human-computer interaction method created with the help of computers and the latest sensor technology. The mirror cover is made of metal or plastic. In order to improve production efficiency and achieve the purpose of mass production, the mirror cover is stamped by stamping die in actual industrial production. The production process is: install the mold on the press, use the upper and lower mold closing action of the mold to press the material, so that the material finally completes plastic deformation according to the shape of the mirror cover of the mold core and the mold cavity.

[0003] In most cases during the stamping process, in order to quickly eject the product after it is formed in the mold, one method is to manually apply lubricating oil to the corners of the mold core or cavity before the upper and lower molds are closed, and the other method is to set a material return rod in the mold. The former requires manual operation and poses a safety hazard. In addition, since the mold has at least two corners when oiling, it needs to be dipped in oil multiple times, and the work efficiency is low. Summary of the invention

[0004] The technical problem to be solved by the present invention is: utilizing the material withdrawal function of the material withdrawal rod, an oiling function is set in the lower mold cavity, so that when the parts in the mold are formed and withdrawn, the oiling function is automatically started to lubricate the corners of the mold cavity with oil. This oiling method improves work efficiency while avoiding safety hazards.

[0005] The technical solution of the present invention is a stamping die for processing VR glasses parts, including an upper template, an upper die base fixed to the bottom of the upper template, a lower template, and a lower die base fixed to the lower template. The lower die base is provided with a cavity which is opposite to the core at the bottom of the upper die base, and the cavity is provided with a multifunctional mechanism. The multifunctional mechanism includes a material return assembly, and the material return assembly includes an active cavity opened in the cavity and a material return rod arranged in the active cavity. An attached cavity is provided on the side of the active cavity, and a gear is provided in the attached cavity. Blades are provided at both ends of the gear. The attached cavity is communicated with the active cavity, and an oil channel is opened between the attached cavity and the cavity. The material return rod is provided with a tooth surface. When the material return rod moves with the tooth surface and utilizes the tooth surface to mesh the gear to rotate, the lubricating oil in the attached cavity enters the inner wall surface of the cavity along the oil channel.

[0006] As a further preference, one end of the movable cavity passes through the bottom surface of the cavity, the other end of the movable cavity passes through one side of the lower mold base, one end of the material return rod reaches the cavity, the other end of the material return rod slides in the middle of the movable cavity, a limit seat with a guide hole is fixed in the movable cavity, and a spring rod is provided on one end of the material return rod sliding in the middle of the movable cavity.

[0007] As a further preferred embodiment, the spring rod passes through the guide hole, one end of the movable cavity passing through the bottom surface of the cavity is in an upwardly curved arc shape, and one end of the movable cavity passing through the lower die seat extends horizontally.

[0008] As further preferred, one end of the ejector rod that reaches the cavity protrudes upward.

[0009] As a further preferred embodiment, locating pins are fixed on the left and right sides of the top surface of the lower mold base. There are two locating pins, and the two locating pins are symmetrical to the left and right sides of the cavity. The top ends of the locating pins protrude upward, and locating plates are fixed on the front and back sides of the top surface of the lower mold base, which are symmetrical to the front and back sides of the cavity.

[0010] As a further preferred embodiment, a ball head is fixed on one end of the material return rod protruding from the cavity, and the ball head is a spherical polyurethane transparent cover. The inner cavity of the ball head is filled with lubricating oil, and an oil pipe runs through the bottom end of the ball head and the material return rod. The bottom end of the oil pipe passes through the material return rod and communicates with the attached cavity, and the top end of the oil pipe runs through the inner cavity of the ball head and is provided with a plurality of oil filling holes communicated with the inner cavity of the ball head. The lubricating oil in the attached cavity is communicated with the lubricating oil in the ball head, and the amount of lubricating oil in the attached cavity is sufficient to fill the oil along the oil channel to close to the cavity. Immersion holes are provided on the inner wall surface of the cavity, and the immersion holes correspond to the corners of the cavity. The immersion holes are communicated with the top end of the oil pipe. Shallow grooves communicated with the immersion holes are provided on both sides of the corners of the cavity, and the shallow grooves are filled with foam.

[0011] As a further preference, the volume size of the attached chamber adjacent to one side of the oil passage is larger than the volume size of the attached chamber away from the other side of the oil passage, so that the capacity of the lubricating oil in the attached chamber adjacent to one end of the oil passage is larger than the capacity of the lubricating oil in the attached chamber away from the other side of the oil passage.

[0012] As a further preference, the blades are in two groups and are symmetrically fixed on both sides of the gear and installed in the attached cavity with the gear. The size of the blades is larger than the tooth size of the gear. When the blades rotate synchronously with the gear, hydraulic pressure is formed in the attached cavity, and the lubricating oil in the attached cavity is sent along the oil channel to the immersion hole and enters the shallow groove along the immersion hole.

[0013] As a further preference, the material return rod is a hollow thick-walled rubber tube, the tooth surface is evenly distributed along the outer wall of the material return rod, and the tooth surface is distributed along the side of the material return rod facing the gear and meshes with the gear. When the material return rod moves upward to push the ball head into the protrusion in the mold cavity, two-thirds of the tooth surface moves with the material return rod to the upper half of the attached cavity.

[0014] As a further preference, one end of the oil passage communicating with the attached cavity is provided with a trumpet surface through a grinding process, and the opening size of the trumpet surface gradually increases in a direction toward the blade.

[0015] As a further preference, the blade is a trapezoidal plate that gradually widens from one end connected to the end of the gear to the other end, and the trapezoidal bevel of the blade faces the horn surface.

[0016] The beneficial effect of the present invention compared with the prior art is that a movable cavity is arranged in the lower die base, and a material return rod is arranged in the movable cavity. One end of the material return rod penetrates into the open cavity, and the other end is arranged in the movable cavity through a spring rod. Through the reciprocating displacement action of the top end of the material return rod in the cavity, the formed product can be instantly returned, thereby improving the material return efficiency.

[0017] An auxiliary cavity is arranged on the side of the movable cavity, blades are arranged in the auxiliary cavity through gears, and lubricating oil is filled in the auxiliary cavity, and a tooth surface is arranged on the above-mentioned ejector rod. When the ejector rod is in motion, the gear is driven to rotate by the tooth surface. Since the gear is located in the auxiliary cavity, and the auxiliary cavity is communicated with the movable cavity, and the movable cavity is actually blocked by the ejector rod, and an oil channel is opened between the auxiliary cavity and the cavity, when the gear rotates with the blades installed at both ends, the blades will be equivalent to rotating in a relatively closed auxiliary cavity, similar to a homemade gear pump, and the rotating action of the blades will send the lubricating oil injected into the auxiliary cavity along the oil channel to the inner wall of the cavity, and the lubricating oil will be applied to the product part by the inner wall of the cavity, so that after the product part is formed, in addition to using the ejector rod to push its bottom surface to help it eject the material out of the cavity, the side surface of the product part (molding flange area) is lubricated by applying lubricating oil, thereby improving the ejection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention from a top view;

[0019] Figure 2 It is a schematic diagram of the structure of the present invention after partial cutting with a hatching line;

[0020] Figure 3 In the present invention, Figure 2 The schematic diagram of the internal structure when only the ball head area is cut open is shown;

[0021] Figure 4 It is a schematic diagram of the main plane structure of the present invention after only the bottom lower mold base is cut open and with a section line;

[0022] Figure 5 In the present invention, Figure 2A schematic diagram of the structure from another perspective without section lines is shown for ease of reading.

[0023] In the figure: 1. upper template; 2. lower template; 3. upper mold base; 4. lower mold base; 5. cavity; 6. multi-functional mechanism; 61. material removal assembly; 611. movable cavity; 612. material removal rod; 613. tooth surface; 7. limit seat; 71. guide hole; 8. spring rod; 9. auxiliary cavity; 10. oil channel; 11. gear; 111. blade; 12. positioning plate; 13. ball head; 14. oil pipe; 141. oil filling hole; 15. positioning pin; 16. immersion hole; 17. shallow groove; 18. foam; 19. horn surface. DETAILED DESCRIPTION

[0024] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0025] In one embodiment, Figure 1-5 shown.

[0026] The present embodiment provides a stamping die for processing VR glasses parts, which includes an upper template 1, an upper die base 3 fixed to the bottom of the upper template 1, a lower template 2, and a lower die base 4 fixed to the lower template 2. A cavity 5 is provided on the lower die base 4. The cavity 5 is opposite to the core at the bottom of the upper die base 3. The contour shape of the cavity 5 matches the VR glasses. A multifunctional mechanism 6 is provided on the cavity 5. The multifunctional mechanism 6 includes a material return component 61. The material return component 61 includes an active cavity 611 provided in the cavity 5 and a material return rod 612 arranged in the active cavity 611. One end of the active cavity 611 is bent upward in an arc shape and then penetrates to communicate with the bottom surface of the cavity 5. The other end of the active cavity 611 extends horizontally and then penetrates to one side of the lower die base 4. The material return rod 612 corresponds to the active cavity 611. The material rod 612 is a hollow rubber tube, one end of the material return rod 612 protrudes into the mold cavity 5, and the other end of the material return rod 612 slides in the middle of the movable cavity 611. A limited seat 7 is fixed in the movable cavity 611, and a guide hole 71 is provided on the limited seat 7. The material return rod 612 extends to the middle of the movable cavity 611 and one end is provided with a spring rod 8 that runs through the guide hole 71. An attached cavity 9 filled with lubricating oil is provided on the side of the movable cavity 611, and a gear 11 is provided in the attached cavity 9. The attached cavity 9 is communicated with the movable cavity 611, and an oil passage 10 is opened between the attached cavity 9 and the mold cavity 5. A tooth surface 613 is provided on the material return rod 612, and the tooth surface 613 is meshed with the gear 11, and when the gear 11 is driven to rotate, the lubricating oil in the attached cavity 9 is sent to the inner wall of the mold cavity 5 along the oil passage 10, and blades 111 are provided at both ends of the gear 11.

[0027] In this embodiment, when in use, the plate is placed on the top surface of the lower die seat 4, and the upper die seat 3 presses the plate into the cavity 5 (mold closing) under the downward push of the upper die plate 1, and the plate is pressed into the desired product according to the molding contour of the cavity 5 and the shape of the mold core on the upper die seat 3. When the product is formed, its bottom surface will be pressed on the bottom surface of the cavity 5, and the top end of the ejector rod 612 will be squeezed to force the end of the ejector rod 612 protruding in the cavity 5 to retreat into the active cavity 611. When the ejector rod 612 retreats into the active cavity 611, the rod section of the spring rod 8 will move smoothly to the left under the guidance of the guide hole 71. At the same time, the spring part of the spring rod 8 will be compressed and shortened between the limit seat 7 and the ejector rod 612 and store elastic force. When the press separates the upper die base 3 from the lower die base 4 through the upper die plate 1 (mold separation), at this time, since the core on the upper die base 3 and the cavity 5 on the lower die base 4 are separated from each other, the product remaining in the cavity 5 during molding loses pressure. At the same time, the end of the ejector rod 612 protruding in the cavity 5 is no longer squeezed by the product, that is, the spring part of the spring rod 8 will release the elastic force and quickly lengthen. The elastic force released instantly will act on the end of the ejector rod 612 and push the ejector rod 612 to move upward along the movable cavity 611 until the top end of the ejector rod 612 is pushed to protrude in the cavity 5 again. At this time, since the top end of the ejector rod 612 protrudes in the cavity 5, the product part is quickly ejected from the cavity 5 to complete the ejection.

[0028] In this embodiment, when the product is formed, in addition to squeezing the ejector rod 612 and pressing the top of the ejector rod 612 into the active cavity 611, the gear 11 is driven to rotate by the tooth surface 613. Since the gear 11 is located in the attached cavity 9, and the attached cavity 9 is connected to the active cavity 611, and the active cavity 61 is actually blocked by the ejector rod 612, and the oil passage 10 is opened between the attached cavity 9 and the cavity 5, when the gear 11 rotates with the blades 111 installed at both ends, the blades 111 are quite Then it rotates in a relatively closed attached cavity 9, similar to a homemade gear pump, and uses the rotation of the blade 111 to send the lubricating oil injected into the attached cavity 9 along the oil passage 10 to the inner wall of the cavity 5, and the lubricating oil is applied to the product by the inner wall of the cavity 5, so that after the product is formed, in addition to using the ejector rod 612 to push its bottom surface to help it eject the material from the cavity 5, the lubricating oil is also applied to the side of the product (molding flange area) to improve the efficiency of the ejection. The lubrication effect when the product is formed can prevent wrinkles on the surface during the side flange forming.

[0029] In this embodiment, positioning pins 15 are fixed on the left and right sides of the top surface of the lower mold base 4. There are two positioning pins 15, and the two positioning pins 15 are symmetrical to the left and right sides of the cavity 5. The top of the positioning pins 15 protrudes upward. The front and rear sides of the top surface of the lower mold base 4 are fixed with positioning plates 12 symmetrical to the front and rear sides of the cavity 5. Before the plate is formed, the left and right sides are positioned by the positioning pins 15, and the front and rear sides are positioned by the positioning plates 12. During forming, the product quality can be improved and the deviation of the formed product can be prevented. The specific structure of the positioning pins 15 and the positioning plates 12 is actually confirmed according to the outer contour of the plate, and the present invention does not limit it.

[0030] In this embodiment, a ball head 13 is fixed on one end of the ejector rod 612 protruding from the cavity 5. The ball head 13 is a spherical polyurethane transparent cover. The inner cavity of the ball head 13 is filled with lubricating oil. The wall thickness of the ball head 13 is sufficient to prevent it from being deformed or damaged when under pressure. An oil pipe 14 passes through the bottom end of the ball head 13 and the return rod 612. The bottom end of the oil pipe 14 passes through the return rod 612 and communicates with the attached cavity 9. The top end of the oil pipe 14 passes through the inner cavity of the ball head 13 and is provided with a plurality of oil filling holes 141 which are communicated with the inner cavity of the ball head 13. The lubricating oil in the attached cavity 9 is communicated with the lubricating oil in the ball head 13, and the amount of lubricating oil in the attached cavity 9 is sufficient to be filled along the oil passage 10 to close to the cavity 5. An immersion hole 16 is provided on the inner wall surface of the cavity 5. The immersion hole 16 corresponds to the corner of the cavity 5. The immersion hole 16 is communicated with the top end of the oil pipe 14. Shallow grooves 17 which are communicated with the immersion hole 16 are provided on both sides of the corner of the cavity 5, and the shallow grooves 17 are filled with foam 18. Since the end of the ejector rod 612 protruding from the cavity 5 is a ball head 13, that is, the end of the ejector rod 612 is a spherical surface, the spherical surface structure is used to press against the bottom surface of the product to eject the product from the cavity 5 upward, which can prevent the bottom surface of the product from being damaged. Lubricating oil is regularly injected into the ball head 13, and the oil level is observed according to the transparent cover structure of the ball head 13. When the oil level reaches the bottom of the ball head 13, the lubricating oil is replenished into the oil pipe 14 through the top of the ball head 13. When injecting oil, part of the lubricating oil will be replenished into the ball head 13 through the oil replenishing hole 141, and the other part of the lubricating oil will be directly filled into the attached cavity 9 along the oil pipe 14, so that the lubricating oil in the attached cavity 9 is always maintained to meet the oil pressure formed in the attached cavity 9 when the blades 111 on both sides rotate with the gear 11, which can replenish the lubricating oil into the cavity 5 along the oil channel 10. The lubricating oil is not discharged into the cavity 5 alone, but is distributed into the shallow groove 17 through the immersion holes 16 on the wall of the cavity 5, and finally smeared onto the outer wall surface of the flange forming area of ​​the product part through the foam 18.

[0031] In this embodiment, the volume size of the side of the attached cavity 9 adjacent to the oil passage 10 is larger than the volume size of the other side of the attached cavity 9 away from the oil passage 10, so that the capacity of the lubricating oil at one end of the attached cavity 9 adjacent to the oil passage 10 is larger than the capacity of the lubricating oil at the other side of the attached cavity 9 away from the oil passage 10. The blades 111 are in two groups, and are symmetrically fixed on both sides of the gear 11 and installed in the attached cavity 9 with the gear 11. The size of the blades 111 is larger than the gear teeth size of the gear 11. When the blades 111 rotate synchronously with the gear 11, hydraulic pressure is formed in the attached cavity 9, and the lubricating oil in the attached cavity 9 is sent to the immersion hole 16 along the oil passage 10 by hydraulic pressure, and enters the shallow groove 17 along the immersion hole 16. The blades 111 are in two groups and are symmetrically arranged so that when they rotate simultaneously, a higher oil pressure can be formed in the attached cavity 9. When the gear 11 rotates with the blades 111 on both sides in the attached chamber 9, it will form a stirring effect on the lubricating oil in the attached chamber 9, and cause the lubricating oil to form a larger oil pressure in the volume chamber adjacent to the oil channel 10 to ensure that the lubricating oil is delivered to the shallow groove 17 along the slender oil channel 10.

[0032] In this embodiment, the material return rod 612 is a hollow thick-walled rubber tube, and the tooth surface 613 is evenly distributed along the outer wall of the material return rod 612, and the tooth surface 613 is distributed along the side of the material return rod 612 facing the gear 11, and meshes with the gear 11. When the material return rod 612 moves upward to push the ball head 13 to the protrusion in the cavity 5, two-thirds of the tooth surface 613 is displaced to the upper half of the cavity 9 along with the material return rod 612. It can be seen that the length of the tooth surface 613 when the range of the material return rod 612 is expanded is greater than the length of the tooth bud surface on the gear 11 when it is expanded, so that the tooth surface 613 can drive the gear 11 to rotate for multiple cycles when the material return rod 612 is displaced, so as to ensure that when the blade 111 rotates for multiple cycles following the gear 11, the lubricating oil in the attached cavity 9 is sent to the shallow groove 17 along the oil passage 10.

[0033] In this embodiment, in order to allow the lubricating oil in the attached cavity 9 to smoothly enter the oil passage 10 after being stirred by the double-sided blades 111, a horn surface 19 is provided at one end of the oil passage 10 communicating with the attached cavity 9 through a grinding process, and the opening size of the horn surface 19 gradually increases in the direction toward the blades 111. In order to allow the lubricating oil in the attached cavity 9 to enter the oil passage 10 to the maximum extent after being stirred by the double-sided blades 111, the blades 111 are trapezoidal plates that gradually widen from one end connected to the end of the gear 11 to the other end, and the trapezoidal bevel of the blades 111 faces the horn surface 19.

[0034] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stamping die for processing VR glasses parts, characterized in that: The invention comprises an upper mold plate (1), an upper mold base (3) fixed at the bottom of the upper mold plate (1), a lower mold plate (2), and a lower mold base (4) fixed on the lower mold plate (2); a mold cavity (5) is provided on the lower mold base (4) and is opposite to the mold core at the bottom of the upper mold base (3); a multifunctional mechanism (6) is provided on the mold cavity (5); the multifunctional mechanism (6) comprises a material return assembly (61); the material return assembly (61) comprises an active cavity (611) provided in the mold cavity (5) and a material return rod (612) arranged in the active cavity (611); the active cavity (61 An attached cavity (9) is provided on the side of the mold (1), a gear (11) is provided in the attached cavity (9), blades (111) are provided at both ends of the gear (11), the attached cavity (9) is communicated with a movable cavity (611), an oil passage (10) is opened between the attached cavity (9) and the mold cavity (5), a tooth surface (613) is provided on the ejector rod (612), when the ejector rod (612) moves with the tooth surface (613) and rotates by meshing the gear (11) with the tooth surface (613), the lubricating oil in the attached cavity (9) enters the inner wall surface of the mold cavity (5) along the oil passage (10).

2. A stamping die for processing VR glasses parts according to claim 1, characterized in that: One end of the movable cavity (611) passes through the bottom surface of the cavity (5), and the other end of the movable cavity (611) passes through one side of the lower mold base (4). One end of the material return rod (612) reaches the cavity (5), and the other end of the material return rod (612) slides in the middle of the movable cavity (611). A limit seat (7) with a guide hole (71) is fixed in the movable cavity (611), and a spring rod (8) is provided on one end of the material return rod (612) that slides in the middle of the movable cavity (611).

3. A stamping die for processing VR glasses parts according to claim 2, characterized in that: The spring rod (8) passes through the guide hole (71), and one end of the movable cavity (611) passing through the bottom surface of the cavity (5) is in an upward curved arc shape, and one end of the movable cavity (611) passes through the lower die base (4) and extends horizontally.

4. A stamping die for processing VR glasses parts according to claim 3, characterized in that: One end of the ejector rod (612) that reaches the cavity (5) protrudes upward.

5. The stamping die for processing VR glasses parts according to claim 4, characterized in that: Positioning pins (15) are fixed on the left and right sides of the top surface of the lower mold base (4). There are two positioning pins (15), and the two positioning pins (15) are symmetrical to the left and right sides of the cavity (5). The top ends of the positioning pins (15) protrude upward. Positioning plates (12) symmetrical to the front and back sides of the top surface of the lower mold base (4) are fixed on the front and back sides of the cavity (5).

6. The stamping die for processing VR glasses parts according to claim 5, characterized in that: A ball head (13) is fixed to one end of the material return rod (612) protruding from the mold cavity (5). The ball head (13) is a spherical polyurethane transparent cover. The inner cavity of the ball head (13) is filled with lubricating oil. An oil pipe (14) runs through the bottom end of the ball head (13) and the material return rod (612). The bottom end of the oil pipe (14) passes through the material return rod (612) and communicates with the attached cavity (9). The top end of the oil pipe (14) runs through the inner cavity of the ball head (13) and is provided with a plurality of oil filling holes (14) that communicate with the inner cavity of the ball head (13). 1), the lubricating oil in the attached cavity (9) is in communication with the lubricating oil in the ball head (13), and the amount of the lubricating oil in the attached cavity (9) is sufficient to fill the lubricating oil along the oil passage (10) to a position close to the cavity (5), an immersion hole (16) is provided on the inner wall surface of the cavity (5), the immersion hole (16) corresponds to the corner of the cavity (5), the immersion hole (16) is in communication with the top end of the oil pipe (14), shallow grooves (17) in communication with the immersion hole (16) are provided on both sides of the corner of the cavity (5), and the shallow grooves (17) are filled with foam (18).

7. A stamping die for processing VR glasses parts according to claim 6, characterized in that: The volume size of the attached chamber (9) on one side adjacent to the oil passage (10) is larger than the volume size of the other side of the attached chamber (9) away from the oil passage (10), so that the capacity of the lubricating oil at one end of the attached chamber (9) adjacent to the oil passage (10) is larger than the capacity of the lubricating oil at the other side of the attached chamber (9) away from the oil passage (10).

8. The stamping die for processing VR glasses parts according to claim 7, characterized in that: The blades (111) are in two groups and are symmetrically fixed on both sides of the gear (11) and installed in the attached cavity (9) along with the gear (11). The size of the blades (111) is larger than the size of the gear teeth of the gear (11). When the blades (111) rotate synchronously with the gear (11), hydraulic pressure is formed in the attached cavity (9), and the lubricating oil in the attached cavity (9) is sent to the immersion hole (16) along the oil passage (10) by using the hydraulic pressure, and enters the shallow groove (17) along the immersion hole (16).

9. A stamping die for processing VR glasses parts according to claim 8, characterized in that: The material return rod (612) is a hollow thick-walled rubber tube, and the tooth surface (613) is evenly distributed along the outer wall of the material return rod (612). The tooth surface (613) is distributed along the side of the material return rod (612) facing the gear (11) and meshes with the gear (11). When the material return rod (612) moves upward to push the ball head (13) into the protrusion in the mold cavity (5), two-thirds of the tooth surface (613) moves with the material return rod (612) to the upper half of the cavity of the attached cavity (9).

10. A stamping die for processing VR glasses parts according to claim 9, characterized in that: One end of the oil passage (10) communicating with the attached cavity (9) is provided with a trumpet surface (19) through a grinding process, and the opening size of the trumpet surface (19) gradually increases in a direction toward the blade (111).

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