A rapid reset thermoplastic nylon carbon plate double-layer injection mold and a method of using the same

Abstract

The application discloses a thermoplastic nylon carbon plate double-layer injection mold with quick reset and a use method thereof, and relates to the technical field of injection molding processing. The device comprises an upper mold and a lower mold, the lower mold is provided with an ejection frame, the lower fixed plate is provided with an ejection cylinder, the ejection frame is connected with the lower fixed plate through a reset unit, the reset unit comprises a plurality of reset springs, the reset springs are connected with a first connecting plate, the rotating block is provided with a detection unit for detecting the rebounding capacity of the reset springs, and the lower fixed plate is provided with a rotating unit for driving the rotating block to rotate in the circumferential direction of the first connecting plate. The rotating unit drives the rotating block to rotate, drives the detection unit to rotate in the circumferential direction of the first connecting plate, detects the rebounding capacity of each reset spring in sequence, and replaces the reset springs with poor rebounding capacity, so that the reset springs can be conveniently detected by the user, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of mold processing, and in particular to a rapid reset thermoplastic nylon carbon plate double-layer injection mold and its usage method. Background Technology

[0002] Molds are various molds and tools used in industrial production to obtain the desired products through injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. Double-layer injection molds can be used to injection mold two different plastics into one product. Double-layer injection molds are used in the processing of nylon carbon sheets.

[0003] A search revealed a Chinese patent with publication number CN217648880U, which discloses a quick-reset double-layer injection mold. By setting up a lifting and resetting device, the moving block can drive the upper mold body to move up and down under the action of the drive motor, rotating rod, first bevel gear, second bevel gear, threaded rod and moving groove. This allows the upper mold body to quickly reset after injection molding, avoiding affecting the next operation of the entire double-layer injection mold.

[0004] However, the above invention has the following shortcomings: When the injection-molded finished product is demolded, it needs to be ejected by an ejection mechanism. After ejecting the finished product, the ejection mechanism needs to return to its original position under the action of a return spring. After a period of use, the return spring will experience spring force decay, and its rebound ability will weaken. The spring force decay of each return spring will also be different due to different production batches. This will cause the ejection mechanism to deviate from the center when returning to its original position due to the different rebound abilities of the return springs. Therefore, it is often necessary to test the rebound ability of different return springs in order to ensure the normal operation of the ejection mechanism. However, the current mold does not have the function of testing the rebound ability of the return spring. Currently, the return spring is usually removed for testing, which is time-consuming and labor-intensive.

[0005] Based on this, a rapid reset thermoplastic nylon carbon plate double-layer injection mold that can solve the above problems and its application method are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a rapid reset thermoplastic nylon carbon plate double-layer injection mold and its usage method, so as to solve the problems mentioned in the background art.

[0007] The technical solution of this invention is: a fast-resetting thermoplastic nylon carbon sheet double-layer injection mold, including an upper mold and a lower mold, the upper mold and the lower mold are connected by guide pillars, the ends of the guide pillars are connected to a lower fixed plate, the upper mold is provided with a pouring gate, the lower mold is provided with an ejection frame, the lower fixed plate is provided with an ejection cylinder, the ejection cylinder is used to provide power for the ejection frame to eject the finished product, the ejection frame is connected to the lower fixed plate through a reset unit, the reset unit includes multiple reset springs, the multiple reset springs are evenly arranged in the circumferential direction of the ejection frame, the reset springs are connected to a first connecting plate, the first connecting plate is connected to a rotating block, the rotating block is provided with a detection unit for detecting the rebound capacity of the reset springs, and the lower fixed plate is provided with a rotating unit for driving the rotating block to rotate in the circumferential direction of the first connecting plate.

[0008] Preferably, the upper mold is provided with a forming cavity, the lower mold is provided with a forming block, the ejector frame is disposed in the forming block, the upper mold is fixedly connected with an upper fixing plate, and the lower mold is fixedly connected with a barrier plate by a plurality of fourth connecting rods.

[0009] Preferably, the shape of the first connecting plate corresponds to the shape of the ejector frame, the first connecting plate is connected to the output end of the ejector cylinder, an ejector rod is fixedly connected to the first connecting plate, the upper end of the ejector rod narrows and is connected to the ejector frame, the return spring is sleeved on the outer wall of the ejector rod, and the ejector rod passes through the barrier plate.

[0010] Preferably, a first motor is fixedly connected to the lower end of the rotating block, and a rotating plate is fixedly connected to the output end of the first motor.

[0011] Preferably, the detection unit includes a first connecting rod fixedly connected to the rotating plate, an infrared length detector is fixedly connected to the side of the first connecting rod, and an adjustment unit for adjusting the length of the reset spring is provided on the first connecting rod.

[0012] Preferably, the adjustment unit includes a through groove formed on the first connecting rod, an arc-shaped adjustment rod is engaged in the through groove, a first insert rod is fixedly connected in the through groove, the arc-shaped adjustment rod is provided with a slot that mates with the first insert rod, a first inclined surface is provided on the downward side of the arc-shaped adjustment rod, a deep groove is formed on the side of the slot away from the first inclined surface, a first engaging groove is formed on the inner wall of the through groove, a push block is engaged in the first engaging groove, and the push block is connected to the inner wall of the deep groove through a first spring for providing elastic force.

[0013] Preferably, the rotating unit includes a connecting ring, which is connected to the lower fixed plate via an elastic connecting rod. A second motor is fixedly connected to the lower end of the connecting ring, and a rotating gear is fixedly connected to the output end of the second motor. A rotating gear ring is provided on the inner side of the connecting ring, and the rotating gear ring meshes with the rotating gear. An annular snap-fit ​​protrusion is fixedly connected to the rotating gear ring, and an annular snap-fit ​​groove that mates with the annular snap-fit ​​protrusion is provided on the connecting ring. A connecting inner rod is fixedly connected to the inner side of the rotating ring, and a connecting outer rod is fixedly connected to the side of the rotating block. The connecting outer rod is sleeved on the outside of the connecting inner rod, and a second snap-fit ​​groove is provided inside the connecting outer rod. A first snap-fit ​​plate is fixedly connected to the end of the connecting inner rod, and the first snap-fit ​​plate is connected to the inner wall of the second snap-fit ​​groove via a second spring that provides elastic force. The second spring is sleeved on the outside of the connecting inner rod, and a third snap-fit ​​groove is provided on the first connecting plate. A snap-fit ​​plate that snaps into the third snap-fit ​​groove is fixedly connected to the side of the rotating block.

[0014] Preferably, the rotating plate is provided with a material-removing unit for removing the reset spring. The material-removing unit includes a second connecting rod fixedly connected to the rotating plate. A plurality of second inserts are inserted into the second connecting rod in an array. One end of the second insert is fixedly connected to an anti-detachment plate, and the other end of the second insert is fixedly connected to a moving rod. The moving rod is connected to the second connecting rod through a third spring for providing elasticity. The third spring is sleeved on the outside of the second insert. Symmetrically arranged, back-facing material-removing plates are provided on the side of the moving rod. The lower end of the material-removing plate is fixedly connected to the second connecting rod. Each of the material-removing plates is provided with a material-removing curved surface. A third connecting rod is fixedly connected to the side of the second connecting rod. A third insert is inserted into the third connecting rod. One end of the third insert is fixedly connected to the upper end of the material-removing plate. The other end of the third insert is fixedly connected to a second connecting plate. The second connecting plate is connected to the third connecting rod through a fourth spring for providing elasticity. The fourth spring is sleeved on the outside of the third insert.

[0015] Preferably, the return spring is connected to both the upper and lower sides with fixing rings. The return spring is sleeved on the outside of the guide rod. The fixing ring at the lower end is fixedly connected to the guide rod, and the fixing ring at the upper end is sleeved on the outside of the guide rod. An insertion protrusion is fixedly connected to the guide rod, and a fifth snap-fit ​​groove that cooperates with the guide rod is provided on the ejector rod.

[0016] A method for using a fast-resetting thermoplastic nylon carbon plate double-layer injection mold, the steps of which include:

[0017] Step 1: Injection liquid is introduced into the sprue. With the cooperation of the molding cavity and the molding block, the mold forming operation is carried out. The ejector cylinder drives the ejector frame to eject the finished product and compress the return spring.

[0018] Step 2: The rebound capability of the return spring is tested by the detection unit, and the return springs that fail the rebound capability test are marked.

[0019] Step 3: Remove the unqualified return springs using the material handling unit for replacement.

[0020] This invention provides an improved double-layer injection mold for rapid reset of thermoplastic nylon carbon sheet and its method of use, which has the following improvements and advantages compared with the prior art:

[0021] After the upper and lower molds are closed, the injection liquid is introduced through the sprue. With the cooperation of the molding cavity and the molding block, the mold forming operation is carried out. The ejector cylinder drives the ejector frame to eject the finished product and compress the return spring. When the return spring needs to be tested, the rotating unit drives the rotating block to rotate, which in turn drives the testing unit to rotate in the circumferential direction of the first connecting plate. The rebound ability of each return spring is tested in turn, and the return spring with poor rebound ability is replaced. This makes it convenient for users to test the return spring and improves work efficiency. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a partial structural diagram of the present invention. Figure 1 ;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0027] Figure 5 for Figure 3 Enlarged structural diagram at point B;

[0028] Figure 6 This is a schematic diagram of the connection between the reset spring and the retaining ring in this invention;

[0029] Figure 7 This is a partial structural diagram of the present invention. Figure 2 ;

[0030] Figure 8 for Figure 7 Enlarged structural diagram at point C;

[0031] Figure 9 for Figure 7 Enlarged structural diagram at point D;

[0032] Figure 10 This is a cross-sectional view of the annular snap-fit ​​protrusion and the annular snap-fit ​​groove in the present invention.

[0033] Figure 11 This is a cross-sectional view of the connection between the inner rod and the outer rod in this invention.

[0034] Figure 12 This is a partial structural diagram of the present invention. Figure 3 ;

[0035] Figure 13 for Figure 12 Enlarged structural diagram at point E;

[0036] Figure 14 This is a cross-sectional view of the adjustment unit in this invention.

[0037] Reference numerals: 1. Upper mold; 2. Lower mold; 3. Guide pillar; 4. Lower fixed plate; 5. Sprue; 6. Ejector frame; 7. Ejector cylinder; 8. Return spring; 9. First connecting plate; 10. Rotating block; 11. Molding cavity; 12. Molding block; 13. Upper fixed plate; 14. Ejector rod; 15. First motor; 16. Rotating plate; 17. First connecting rod; 18. Infrared length detector; 19. Through slot; 20. Arc-shaped adjusting rod; 21. First insert rod; 22. Slot; 23. First inclined surface; 24. Deep groove; 25. First snap-fit ​​groove; 26. Push block; 27. First spring; 28. Connecting ring; 29. ​​Elastic connecting rod; 30. Second motor; 3 1. Rotating gear; 32. Rotating gear ring; 33. Annular snap-fit ​​protrusion; 34. Annular snap-fit ​​groove; 35. Connecting inner rod; 36. Connecting outer rod; 37. Second snap-fit ​​groove; 38. First snap-fit ​​plate; 39. Second spring; 40. Third snap-fit ​​groove; 41. Snap-fit ​​plate; 42. Second connecting rod; 43. Second insert rod; 44. Anti-detachment plate; 45. Moving rod; 46. Third spring; 47. Material picking plate; 48. Material picking curved surface; 49. Third connecting rod; 50. Third insert rod; 51. Second connecting plate; 52. Fourth spring; 53. Fixing ring; 54. Guide rod; 55. Insertion protrusion; 56. Fifth snap-fit ​​groove; 57. Fourth connecting rod; 58. Barrier plate. Detailed Implementation

[0038] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figures 1 to 14As shown, this embodiment of the invention provides a fast-resetting thermoplastic nylon carbon sheet double-layer injection mold, including an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 are connected by a guide post 3. The end of the guide post 3 is connected to a lower fixed plate 4. The upper mold 1 is provided with a pouring gate 5. The lower mold 2 is provided with an ejector frame 6. The lower fixed plate 4 is provided with an ejector cylinder 7. The ejector cylinder 7 is used to provide power for ejecting the finished product from the ejector frame 6. The ejector frame 6 is connected to the lower fixed plate 4 through a reset unit. The reset unit includes multiple reset springs 8. The multiple reset springs 8 are evenly arranged in the circumferential direction of the ejector frame 6. The reset springs 8 are connected to a first connecting plate 9. The first connecting plate 9 is connected to a rotating block 10. The rotating block 10 is provided with a detection unit for detecting the rebound capacity of the reset springs 8. The lower fixed plate 4 is provided with a rotating unit for driving the rotating block 10 to rotate in the circumferential direction of the first connecting plate 9.

[0040] The upper mold 1 is provided with a forming cavity 11, the lower mold 2 is provided with a forming block 12, the ejector frame 6 is provided in the forming block 12, the upper mold 1 is fixedly connected with an upper fixing plate 13, and the lower mold 2 is fixedly connected with a barrier plate 58 through multiple fourth connecting rods 57.

[0041] The shape of the first connecting plate 9 corresponds to the shape of the ejection frame 6. The first connecting plate 9 is connected to the output end of the ejection cylinder 7. An ejection rod 14 is fixedly connected to the first connecting plate 9. The upper end of the ejection rod 14 narrows and is connected to the ejection frame 6. The return spring 8 is sleeved on the outer wall of the ejection rod 14. The ejection rod 14 passes through the barrier plate 58.

[0042] In actual use, after the upper mold 1 and the lower mold 2 are closed, the injection liquid is introduced through the sprue 5. The molding operation is carried out with the cooperation of the molding cavity 11 and the molding block 12. After molding, the ejector cylinder 7 drives the ejector frame 6 to eject the finished product and compress the return spring 8. When the return spring 8 needs to be tested, the rotating unit drives the rotating block 10 to rotate, which in turn drives the testing unit to rotate in the circumferential direction of the first connecting plate 9. The rebound ability of each return spring 8 is tested in turn, and the return spring 8 with poor rebound ability is replaced.

[0043] The lower end of the rotating block 10 is fixedly connected to a first motor 15, and the output end of the first motor 15 is fixedly connected to a rotating plate 16.

[0044] Combination Figure 6The return spring 8 is connected to both the upper and lower sides with fixing rings 53. The return spring 8 is sleeved on the outside of the guide rod 54. The lower fixing ring 53 is fixedly connected to the guide rod 54, and the upper fixing ring 53 is sleeved on the outside of the guide rod 54. The guide rod 54 is fixedly connected with an insertion protrusion 55. The ejector rod 14 is provided with a fifth snap-fit ​​groove 56 that cooperates with the guide rod 54.

[0045] Combination Figure 13 and Figure 14 The detection unit includes a first connecting rod 17 fixedly connected to the rotating plate 16. An infrared length detector 18 is fixedly connected to the side of the first connecting rod 17. An adjustment unit for adjusting the length of the reset spring 8 is provided on the first connecting rod 17.

[0046] The adjustment unit includes a through groove 19 formed on the first connecting rod 17. An arc-shaped adjustment rod 20 is engaged in the through groove 19. A first insert rod 21 is fixedly connected in the through groove 19. The arc-shaped adjustment rod 20 is provided with a slot 22 that mates with the first insert rod 21. A first inclined surface 23 is provided on the downward side of the arc-shaped adjustment rod 20. A deep groove 24 is formed on the side of the slot 22 away from the first inclined surface 23. A first engaging groove 25 is formed on the inner wall of the through groove 19. A push block 26 is engaged in the first engaging groove 25. The push block 26 is connected to the inner wall of the deep groove 24 through a first spring 27 for providing elasticity.

[0047] When the above-mentioned detection unit is actually used, the first motor 15 rotates and drives the rotating plate 16 to rotate, which in turn drives the first connecting rod 17 on the rotating plate 16 to move towards the ejector rod 14. Before the arc-shaped adjusting rod 20 contacts the ejector rod 14, the arc-shaped adjusting rod 20 contacts the upper fixing ring 53. Under the guidance of the first inclined surface 23, the return spring 8 is compressed. After the arc-shaped adjusting rod 20 contacts the ejector rod 14, the arc-shaped adjusting rod 20 moves in the direction of the first locking groove 25. After moving to the position of the deep groove 24, under the elastic force of the first spring 27, the push block 26 drives the arc-shaped adjusting rod 20 to move upward, and the first insert rod 21 is inserted into the deep groove 24. At this time, the return spring 8 returns to its length before compression. The length of the return spring 8 is detected by the infrared length detector 18 and compared with its calibrated length to obtain the rebound capacity of the return spring 8.

[0048] Combination Figure 4 , Figure 8 , Figure 9 , Figure 10 and Figure 11The rotating unit includes a connecting ring 28, which is connected to the lower fixed plate 4 via an elastic connecting rod 29. A second motor 30 is fixedly connected to the lower end of the connecting ring 28, and a rotating gear 31 is fixedly connected to the output end of the second motor 30. A rotating gear ring 32 is provided on the inner side of the connecting ring 28, meshing with the rotating gear 31. An annular snap-fit ​​protrusion 33 is fixedly connected to the rotating gear ring 32, and an annular snap-fit ​​groove 34 is provided on the connecting ring 28 to mate with the annular snap-fit ​​protrusion 33. A connecting inner rod 35 is fixedly connected to the inner side of the rotating gear ring 32. A connecting outer rod 36 is fixedly connected to the side of the rotating block 10. The connecting outer rod 36 is sleeved on the outside of the connecting inner rod 35. A second snap-fit ​​groove 37 is opened in the connecting outer rod 36. A first snap-fit ​​plate 38 is fixedly connected to the end of the connecting inner rod 35. The first snap-fit ​​plate 38 is connected to the inner wall of the second snap-fit ​​groove 37 through a second spring 39 for providing elastic force. The second spring 39 is sleeved on the outside of the connecting inner rod 35. A third snap-fit ​​groove 40 is opened on the first connecting plate 9 in an annular arrangement. A snap-fit ​​plate 41 that snaps into the third snap-fit ​​groove 40 is fixedly connected to the side of the rotating block 10.

[0049] When the above-mentioned rotating unit is actually used, the second motor 30 rotates to drive the rotating gear 31 to rotate, which in turn drives the rotating gear ring 32 to rotate, causing the inner connecting rod 35, the outer connecting rod 36, and the rotating block 10 to rotate. The second spring 39 can adjust the length of the inner connecting rod 35 extending out of the outer connecting rod 36 to ensure that the rotating block 10 is always in contact with the side of the first connecting plate 9, which is convenient for the detection unit to perform detection.

[0050] Combination Figure 13When a return spring 8 with insufficient rebound capacity is detected, it needs to be removed and replaced. The rotating plate 16 is equipped with a material-removing unit for removing the return spring 8. The material-removing unit includes a second connecting rod 42 fixedly connected to the rotating plate 16. Multiple arrayed second inserts 43 are inserted into the second connecting rod 42. One end of each second insert 43 is fixedly connected to an anti-detachment plate 44, and the other end is fixedly connected to a moving rod 45. The moving rod 45 is connected to the second connecting rod 42 via a third spring 46 that provides elasticity. The third spring 46 is sleeved on the outside of the second insert 43. The side of 45 is provided with symmetrically arranged, back-facing material-receiving plates 47. The lower end of the material-receiving plate 47 is fixedly connected to the second connecting rod 42. Each of the material-receiving plates 47 is provided with a material-receiving curved surface 48. The side of the second connecting rod 42 is fixedly connected to a third connecting rod 49. A third insert rod 50 is inserted into the third connecting rod 49. One end of the third insert rod 50 is fixedly connected to the upper end of the material-receiving plate 47. The other end of the third insert rod 50 is fixedly connected to a second connecting plate 51. The second connecting plate 51 is connected to the third connecting rod 49 through a fourth spring 52 for providing elasticity. The fourth spring 52 is sleeved on the outside of the third insert rod 50.

[0051] When the above-mentioned material handling unit is actually in use, the first motor 15 rotates and drives the rotating plate 16 to rotate. At this time, the rotation direction of the first motor 15 is opposite to the rotation direction during detection. The moving rod 45 on the moving rod 45 also rotates accordingly. The material handling plate 47 contacts the fixing ring 53. Under the action of the fourth spring 52, the material handling plate 47 contacts the fixing rings 53 at both ends and has a clamping force on them. As the rotating plate 16 rotates, the moving plate moves, and the third spring 46 is stretched. When the rotating plate 16 drives the moving plate to the position facing the fifth locking groove 56, under the elastic force of the third spring 46, the guide rod 54 is driven to disengage from the fifth locking groove 56. The first motor 15 then reverses and the reset spring 8 is removed and replaced.

[0052] A method for using a fast-resetting thermoplastic nylon carbon plate double-layer injection mold, the steps of which include:

[0053] Step 1: The injection liquid is introduced into the sprue 5. With the cooperation of the molding cavity 11 and the molding block 12, the mold forming operation is carried out. The ejector cylinder 7 drives the ejector frame 6 to eject the finished product and compress the return spring 8.

[0054] Step 2: The rebound capability of the return spring 8 is tested by the detection unit, and the return spring 8 that fails the rebound capability test is marked.

[0055] Step 3: Remove the unqualified return spring 8 through the material handling unit for replacement.

[0056] Working principle: After the upper mold 1 and lower mold 2 are closed, injection liquid is introduced through the sprue 5. The molding process is carried out with the cooperation of the molding cavity 11 and the molding block 12. After molding, the ejector cylinder 7 drives the ejector frame 6 to eject the finished product and compress the return spring 8. When the return spring 8 needs to be tested, the rotating unit drives the rotating block 10 to rotate, which in turn drives the testing unit to rotate in the circumferential direction of the first connecting plate 9. The rebound ability of each return spring 8 is tested sequentially, and return springs 8 with poor rebound ability are replaced. The first motor 15 rotates, driving the rotating plate 16 to rotate. The first connecting rod 17 on the rotating plate 16 moves towards the ejector rod 14. Before the arc-shaped adjusting rod 20 contacts the ejector rod 14, the arc-shaped adjusting rod 20 contacts the upper fixing ring 53. Guided by the first inclined surface 23, it compresses the return spring 8. After the arc-shaped adjusting rod 20 contacts the ejector rod 14, it moves in the direction of the first locking groove 25. After moving to the position of the deep groove 24, under the elastic force of the first spring 27, the push block 26 drives the arc-shaped adjusting rod 20 to move upward, and the first insert rod 21 is inserted into the deep groove 24. At this time, the return spring 8 returns to its uncompressed state. The length of the return spring 8 is measured by an infrared length detector 18, and compared with its calibrated length to determine the springback capacity of the return spring 8. The second motor 30 rotates, driving the rotating gear 31 to rotate, which in turn drives the rotating gear ring 32 to rotate, causing the inner connecting rod 35, the outer connecting rod 36, and the rotating block 10 to rotate. The second spring 39 can adjust the length of the inner connecting rod 35 extending beyond the outer connecting rod 36, ensuring that the rotating block 10 always fits against the side of the first connecting plate 9, facilitating detection by the detection unit. The first motor 15 rotates, driving the rotating plate 16 to rotate. At this time, the first motor 15... The rotation direction is opposite to the rotation direction during testing. The moving rod 45 on the moving rod 45 also rotates accordingly. The picking plate 47 contacts the fixing ring 53. Under the action of the fourth spring 52, the picking plate 47 contacts the fixing rings 53 at both ends and has a clamping force on them. As the rotating plate 16 rotates, the moving plate moves, and the third spring 46 is stretched. When the rotating plate 16 drives the moving plate to the position facing the fifth locking groove 56, under the elastic force of the third spring 46, the guide rod 54 is driven to disengage from the fifth locking groove 56. The first motor 15 then reverses and the reset spring 8 is removed and replaced.

[0057] The foregoing description enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-layer injection mold for rapid reset of thermoplastic nylon carbon sheet, characterized in that, The system includes an upper mold (1) and a lower mold (2), which are connected by a guide post (3). The end of the guide post (3) is connected to a lower fixed plate (4). The upper mold (1) is provided with a pouring gate (5), and the lower mold (2) is provided with an ejector frame (6). The lower fixed plate (4) is provided with an ejector cylinder (7), which provides the power for the ejector frame (6) to eject the finished product. The ejector frame (6) is connected to a reset unit. The reset unit is connected to the lower fixing plate (4) and includes multiple reset springs (8). The multiple reset springs (8) are evenly arranged in the circumferential direction of the ejector frame (6). The first connecting plate (9) is connected to the rotating block (10). The rotating block (10) is provided with a detection unit for detecting the rebound capability of the reset springs (8). The lower fixing plate (4) is provided with a rotating unit for driving the rotating block (10) to rotate in the circumferential direction of the first connecting plate (9). The lower end of the rotating block (10) is fixedly connected to a first motor (15), and the output end of the first motor (15) is fixedly connected to a rotating plate (16). The detection unit includes a first connecting rod (17) fixedly connected to the rotating plate (16), an infrared length detector (18) is fixedly connected to the side of the first connecting rod (17), and an adjustment unit for adjusting the length of the reset spring (8) is provided on the first connecting rod (17). The adjustment unit includes a through groove (19) on the first connecting rod (17), an arc-shaped adjustment rod (20) is engaged in the through groove (19), a first insert rod (21) is fixedly connected in the through groove (19), a slot (22) is provided on the arc-shaped adjustment rod (20) to cooperate with the first insert rod (21), a first inclined surface (23) is provided on the downward side of the arc-shaped adjustment rod (20), a deep groove (24) is provided on the side of the slot (22) away from the first inclined surface (23), a first snap-fit ​​groove (25) is provided on the inner wall of the through groove (19), a push block (26) is engaged in the first snap-fit ​​groove (25), and the push block (26) is connected to the inner wall of the deep groove (24) through a first spring (27) for providing elastic force.

2. The double-layer injection mold for rapid reset thermoplastic nylon carbon sheet according to claim 1, characterized in that: The upper mold (1) is provided with a forming cavity (11), the lower mold (2) is provided with a forming block (12), the ejector frame (6) is provided in the forming block (12), the upper mold (1) is fixedly connected with an upper fixing plate (13), and the lower mold (2) is fixedly connected with a barrier plate (58) through multiple fourth connecting rods (57).

3. The double-layer injection mold for rapid reset thermoplastic nylon carbon sheet according to claim 2, characterized in that: The shape of the first connecting plate (9) corresponds to the shape of the ejection frame (6). The first connecting plate (9) is connected to the output end of the ejection cylinder (7). An ejection rod (14) is fixedly connected to the first connecting plate (9). The upper end of the ejection rod (14) narrows and is connected to the ejection frame (6). The ejection rod (14) passes through the barrier plate (58).

4. The double-layer injection mold for rapid reset thermoplastic nylon carbon sheet according to claim 3, characterized in that: The rotating unit includes a connecting ring (28), which is connected to the lower fixed plate (4) via an elastic connecting rod (29). A second motor (30) is fixedly connected to the lower end of the connecting ring (28), and a rotating gear (31) is fixedly connected to the output end of the second motor (30). A rotating gear ring (32) is provided on the inner side of the connecting ring (28), and the rotating gear ring (32) meshes with the rotating gear (31). An annular snap-fit ​​protrusion (33) is fixedly connected to the rotating gear ring (32), and an annular snap-fit ​​groove (34) that mates with the annular snap-fit ​​protrusion (33) is provided on the connecting ring (28). A connecting inner rod (35) is fixedly connected to the inner side of the rotating gear ring (32). A connecting outer rod (36) is fixedly connected to the side of the rotating block (10). The connecting outer rod (36) is sleeved on the outside of the connecting inner rod (35). A second snap-fit ​​groove (37) is opened in the connecting outer rod (36). A first snap-fit ​​plate (38) is fixedly connected to the end of the connecting inner rod (35). The first snap-fit ​​plate (38) is connected to the inner wall of the second snap-fit ​​groove (37) through a second spring (39) for providing elastic force. The second spring (39) is sleeved on the outside of the connecting inner rod (35). A third snap-fit ​​groove (40) is opened on the first connecting plate (9) in an annular arrangement. A snap-fit ​​plate (41) that snaps into the third snap-fit ​​groove (40) is fixedly connected to the side of the rotating block (10).

5. The double-layer injection mold for rapid reset thermoplastic nylon carbon sheet according to claim 4, characterized in that: The rotating plate (16) is provided with a material-removing unit for removing the reset spring (8). The material-removing unit includes a second connecting rod (42) fixedly connected to the rotating plate (16). A plurality of arrayed second inserts (43) are inserted into the second connecting rod (42). One end of the second insert (43) is fixedly connected to an anti-detachment plate (44), and the other end of the second insert (43) is fixedly connected to a moving rod (45). The moving rod (45) is connected to the second connecting rod (42) through a third spring (46) for providing elasticity. The third spring (46) is sleeved on the outside of the second insert (43). The side of the moving rod (45) is provided with symmetrically arranged back-facing... The material taking plate (47) at the lower end is fixedly connected to the second connecting rod (42). The material taking plate (47) is provided with a material taking curved surface (48). The side of the second connecting rod (42) is fixedly connected to a third connecting rod (49). A third insert rod (50) is inserted into the third connecting rod (49). One end of the third insert rod (50) is fixedly connected to the material taking plate (47) at the upper end. The other end of the third insert rod (50) is fixedly connected to a second connecting plate (51). The second connecting plate (51) is connected to the third connecting rod (49) through a fourth spring (52) for providing elasticity. The fourth spring (52) is sleeved on the outside of the third insert rod (50).

6. The double-layer injection mold for rapid reset thermoplastic nylon carbon sheet according to claim 5, characterized in that: The return spring (8) is connected to a fixing ring (53) on both the upper and lower sides. The return spring (8) is sleeved on the outside of the guide rod (54). The fixing ring (53) at the lower end is fixedly connected to the guide rod (54), and the fixing ring (53) at the upper end is sleeved on the outside of the guide rod (54). An insertion protrusion (55) is fixedly connected to the guide rod (54). The ejector rod (14) is provided with a fifth snap-fit ​​groove (56) that cooperates with the guide rod (54).

7. A method for using a double-layer injection mold made of thermoplastic nylon carbon sheet for rapid reset, characterized in that: The method includes a double-layer injection mold for rapid reset thermoplastic nylon carbon sheet as described in claim 6, comprising the following steps: Step 1: The injection liquid is introduced into the sprue (5), and the mold forming operation is carried out with the cooperation of the molding cavity (11) and the molding block (12). The ejector cylinder (7) drives the ejector frame (6) to eject the finished product and compress the reset spring (8). Step 2: The rebound capacity of the return spring (8) is tested by the detection unit, and the return spring (8) with unqualified rebound capacity is marked. Step 3: Remove the unqualified return spring (8) through the material handling unit for replacement.

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