An electric vehicle tail lamp plastic outer decorative panel integrated injection molding mold

Abstract

The application relates to an integrally injection molding die for a plastic outer decorative panel of an electric vehicle tail lamp, which comprises a fixed mold, a movable mold, a driving part one, a positioning block and a hot runner assembly. The driving part one drives the positioning block to slide on the fixed mold. The hot runner assembly comprises a main runner, a hot runner plate and multiple hot nozzles. The hot runner plate is installed on the fixed mold and is used for connecting the main runner and the multiple hot nozzles. The first nozzle closest to the insert among the multiple hot nozzles is provided. A through hole is formed in the positioning block, and the first nozzle penetrates the through hole. When the positioning block is in a working position, a gap is left between the first nozzle and the inner wall of the through hole. When the positioning block is in a avoiding position, the first nozzle is attached to one side of the inner wall of the through hole. The residual heat of the hot runner of the die is utilized to preheat the insert, the energy cost of long-term use is greatly reduced, and the equipment investment and space occupation are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of molds, in particular to a one-piece injection molding mold for an electric vehicle tail lamp plastic outer decorative panel. BACKGROUND

[0002] Insert injection molding is a kind of integrated molding process that pre-places an insert (usually metal, fiber or other prefabricated parts) in the injection mold, and then makes the insert firmly combined with the plastic after the molten plastic is injected and cooled and solidified.

[0003] The electric vehicle tail lamp plastic outer decorative panel, as shown in Figure 1 , needs to be integrally formed on one side of the decorative panel, and the insert, as shown in Figure 2 , is a mounting seat for installing an external sensing device. The insert 11 is made of metal material, and mounting holes 12 and two threaded holes 13 are formed on the insert 11. The mounting holes 12 are matched with the positioning blocks 23, and the two threaded holes 13 are used for installing the sensing assembly. In order to increase the firmness of the integrally formed insert 11 and the decorative panel, the insert 11 has flaps 14 on both sides, and the flaps 14 have mesh holes, which can form an "anchoring" effect after the plastic is formed.

[0004] In order to make the molten plastic fill the mesh pattern on the flaps more, the insert needs to be preheated. The current way is to store the insert in an electric oven or a hot air circulating box. When the operator installs the insert on the positioning block, he needs to wear special heatproof gloves to take out the insert and install it on the positioning block. Since the oven needs to maintain high temperature in the cavity to keep the temperature of the insert, the long-term use cost is high. SUMMARY

[0005] In order to reduce the cost of preheating the insert, the present application provides a one-piece injection molding mold for an electric vehicle tail lamp plastic outer decorative panel.

[0006] The one-piece injection molding mold for an electric vehicle tail lamp plastic outer decorative panel provided by the present application adopts the following technical solution:

[0007] The one-piece injection molding mold for an electric vehicle tail lamp plastic outer decorative panel comprises a fixed mold, a movable mold, a driving member one, a positioning block and a hot runner assembly. The driving member one drives the positioning block to slide on the fixed mold. The hot runner assembly comprises a main runner, a hot runner plate and a plurality of hot nozzles. The hot runner plate is installed on the fixed mold, and is used to connect the main runner and the plurality of hot nozzles. The first nozzle closest to the insert among the plurality of hot nozzles. A through hole is formed on the positioning block, and the first nozzle penetrates the through hole. When the positioning block is in the working position, a gap is left between the first nozzle and the inner wall of the through hole. When the positioning block is in the avoiding position, the first nozzle is in close contact with one side of the inner wall of the through hole.

[0008] By adopting the above technical solution, and by placing the first nozzle close to the insert, the injection pressure for integral molding of the molten plastic and the insert can be increased, thus improving the molding effect. By passing the first nozzle through the through-hole of the positioning block, when the positioning block is in the clearance position, the first nozzle is in contact with the inner wall of one side of the through-hole. The heat generated during the operation of the hot runner assembly can be transferred to the positioning block through the first nozzle, thereby preheating the insert installed on the positioning block. No additional electric oven or hot air circulation box is needed; the preheating of the insert is achieved using the residual heat of the mold's own hot runner, significantly reducing long-term energy costs while also reducing equipment investment and space occupation.

[0009] Preferably, the driving component is a hydraulic cylinder, which is fixedly mounted on the fixed mold. The piston rod end of the hydraulic cylinder is provided with a first boss, and a first connecting groove is provided through the positioning block. The first boss slides in the first connecting groove along the sliding direction of the positioning block.

[0010] It also includes a first spring, a plug block, a slot and a second driving component. The first spring is sleeved on the piston rod of the oil cylinder. The first spring is located on the side of the first nozzle away from the plastic part. The two ends of the first spring abut against the oil cylinder and the positioning block respectively, and are used to drive the positioning block to move toward the working position side.

[0011] The first connecting groove has a sliding groove through its sidewall, the insert block slides in the sliding groove, and the driving member drives the insert block to slide. The first protrusion has a slot that matches the end of the insert block. When the insert block is inserted into the slot, the first protrusion abuts against the end face of the first connecting groove facing the plastic part.

[0012] By adopting the above technical solution, when the positioning block is in the clearance position, the first nozzle is in contact with the inner wall of the through hole. The positioning block will conduct heat from the first nozzle, causing its own temperature to always be much higher than the temperature of other parts of the mold. Operators can easily perceive the temperature of other parts of the mold, but it is difficult to perceive the local high temperature of the positioning block. If the positioning block is accidentally touched during installation under unknown high temperature conditions, it can easily cause injury to the operator. Therefore, the position of the positioning block is further positioned by the cooperation of the second driving component, the first spring, and the insert and slot, so that the positioning block only begins to conduct heat after the insert is installed, avoiding burns.

[0013] Preferably, the second driving component includes a locking component and an unlocking component. The locking component drives the insert block to always move toward the slot side. The unlocking component is used to drive the insert block to disengage from the slot when the plastic part moves to the outside of the positioning block during the mold opening process. After the insert block disengages from the slot, the insert block always abuts against the outer wall of the first boss. The positioning block moves to the side wall of the first connecting groove away from the plastic part and abuts against the first boss. A gap is left between the first nozzle and the inner wall of the through hole.

[0014] By adopting the above technical solution, when the positioning block is in the working position, the insert block is inserted into the slot, and the hydraulic cylinder can fully act on the positioning block to resist the injection pressure. At this time, there is a gap between the first nozzle and the inner wall of the through hole, so the heat of the first nozzle will not be transferred to the positioning block, and the cooling of the injection molded part will not be affected. After injection molding, the positioning block is pulled out first. During the core pulling process, the insert block and the slot are always engaged. After the core pulling is completed, the first nozzle is in contact with one side of the inner wall of the through hole, and the positioning block begins to conduct heat. Then the next step is to open the mold. When the moving mold moves to the point where the plastic part is outside the positioning block, the unlocking component controls the insertion block to unlock. Under the action of the first spring, the positioning block moves away from the cylinder. At this time, there is a gap between the first nozzle and the inner wall of the through hole without external force. Then, the operator installs the insert on the positioning block and presses the insert until the insertion block and the slot are engaged again. At this time, the first nozzle is in contact with the inner wall of one side of the through hole, the positioning block begins to conduct heat, and the positioning block is in the clearance position. When injection begins, the mold closes normally, and then the cylinder drives the positioning block to move to the working position.

[0015] Preferably, the locking component includes a second spring, a bottom block, and a movable block. A sliding groove is provided through the fixed mold. The movable block is slidably connected in the sliding groove along a sliding direction parallel to the slot. The end of the insert block away from the first boss is slidably connected to the movable block along a sliding direction parallel to the positioning block.

[0016] The bottom block is fixed to the fixed mold by screws. The bottom block is located between the fixed mold and the moving mold. The two ends of the second spring abut against the bottom block and the moving block, respectively.

[0017] By adopting the above technical solution, the second spring, the base block, and the moving block work together to continuously drive the insert block towards the slot; the unlocking component, during mold opening, drives the insert block to disengage from the slot after the plastic part moves to the outside of the positioning block. This eliminates the need for manual switching of the positioning block's working position and clearance position, achieving automated mold operation and improving production efficiency.

[0018] Preferably, the unlocking component includes an unlocking block, a third spring, a first magnet, a second magnet, and a separating component;

[0019] The slide includes a first groove and a second groove, the radial dimension of the second groove is larger than that of the first groove, the moving block includes an I-shaped block and two extension blocks, one end of the I-shaped block slides in the first groove and is slidably connected to the insert block, the two extension blocks are respectively fixed on the two sides of the other end of the I-shaped block, the two extension blocks slide in the second groove, the second spring is located in the second groove, and the two ends of the second spring abut against the extension block and the bottom block respectively.

[0020] The unlocking block has a second connecting groove. The end of the I-shaped block away from the insert block slides in the second connecting groove. Two extension blocks extend out from both sides of the unlocking block. The fixed mold has a third groove. The radial dimension of the third groove is between the first groove and the second groove. A stepped surface is formed at the connection between the third groove and the first groove. The unlocking block has an extension rod on the side facing the bottom block. A through hole is opened in the center of the bottom block for the extension rod to slide through. The third spring is sleeved on the extension rod. The two ends of the third spring abut against the unlocking block and the bottom block respectively. The second spring surrounds the third spring.

[0021] The first magnet is fixed to the end of the extension rod facing the moving mold, and the second magnet is fixed inside the moving mold. The first magnet and the second magnet attract each other. The separating member is used to drive the first magnet and the second magnet to separate after the insert block is disengaged from the slot.

[0022] By adopting the above technical solution, during mold closing, the moving mold and the fixed mold are close to each other, the first magnet attracts the second magnet, and the unlocking block abuts against the step surface. The unlocking block will not affect the moving block. The moving block and the insert block are maintained by the second spring with driving force towards the slot side. During the mold opening stage, before the plastic part moves to the outside of the positioning block, the first magnet and the second magnet are always in an attracted state. At this time, the unlocking block will overcome the elastic force of the third spring and follow the moving mold. As the moving distance increases, when the plastic part is about to move to the outside of the positioning block, the unlocking block moves to abut against the I-shaped block, driving the moving block to move down against the elastic force of the second spring until the slot is disengaged from the slot. At this time, under the action of the first spring, the positioning block moves towards the plastic part without hitting the plastic part. As the moving distance increases further, under the action of the separating component, the first magnet and the second magnet separate. After losing the magnetic force, the unlocking block will move back to abut against the step surface under the action of the third spring.

[0023] By balancing the magnetic attraction force and the spring force, the timing of the unlocking action is precisely controlled, ensuring that the plastic part is unlocked only after it has detached from the positioning block, thus avoiding interference between the plastic part and the positioning block.

[0024] Preferably, the separating component includes a retaining ring, which is fixed to the bottom block. The outer wall of the retaining ring is in contact with the inner wall of the second groove, and the inner wall of the retaining ring is located in the third groove. The end of the second spring away from the extension block abuts against the retaining ring, and the retaining ring surrounds the third spring. When the insert block disengages from the slot, the unlocking block abuts against the retaining ring.

[0025] By adopting the above technical solution, when the insert block is disengaged from the slot, the unlocking block abuts against the fixing ring, and the fixing ring restricts the continued movement of the unlocking block, thereby realizing the separation of the first magnet and the second magnet.

[0026] Preferably, the end of the unlocking block facing the step surface is provided with a cushioning pad.

[0027] By adopting the above technical solution, when the first magnet separates from the second magnet, the unlocking block will move and reset towards the step surface under the action of the third spring. By setting a buffer pad, the collision force between the unlocking block and the step surface can be buffered, reducing the frequency of mold maintenance.

[0028] The main technical effects of this invention are reflected in the following aspects:

[0029] 1. This invention improves the molding effect by placing the first nozzle close to the insert, thereby increasing the injection pressure for integral molding of the molten plastic and the insert. By passing the first nozzle through the through-hole of the positioning block, when the positioning block is in the clearance position, the first nozzle is in contact with the inner wall of one side of the through-hole. The heat generated during the operation of the hot runner assembly can be transferred to the positioning block through the first nozzle, thus preheating the insert mounted on the positioning block. No additional electric oven or hot air circulation box is needed; the residual heat of the mold's own hot runner is used to preheat the insert, significantly reducing long-term energy costs while also reducing equipment investment and space occupation.

[0030] 2. In this invention, when the positioning block is in the working position, the insert block is inserted into the slot, and the hydraulic cylinder can fully act on the positioning block to resist the injection pressure. At this time, there is a gap between the first nozzle and the inner wall of the through hole, and the heat of the first nozzle will not be transferred to the positioning block, thus not affecting the cooling of the injection molded part. After injection molding, the positioning block is first pulled out. During the core pulling process, the insert block and the slot are always engaged. After the core pulling is completed, the first nozzle is in contact with one side of the inner wall of the through hole, and the positioning block begins to conduct heat. Then, the mold is opened. When the moving mold moves to the point where the plastic part is outside the positioning block, the unlocking component controls the insert block to unlock. Under the action of the first spring, the positioning block moves away from the hydraulic cylinder. At this time, there is a gap between the first nozzle and the inner wall of the through hole without external force. Then, the operator installs the insert on the positioning block and presses the insert until the insert block and the slot are engaged again. At this time, the first nozzle is in contact with one side of the inner wall of the through hole, and the positioning block begins to conduct heat. At the same time, the positioning block is in the clearance position. When injection molding begins, the mold is closed normally, and then the hydraulic cylinder drives the positioning block to move to the working position. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of the plastic outer decorative panel for the electric vehicle taillight in this application.

[0032] Figure 2 This is a schematic diagram of the structure of the insert in this application.

[0033] Figure 3 This is a schematic diagram of the structure of the injection molding mold in the embodiment of this application.

[0034] Figure 4This is a cross-sectional view of the mold when the positioning block is in the working position during the injection molding process, according to an embodiment of this application.

[0035] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0036] Figure 6 This is a schematic diagram showing the state in which the insert and decorative panel are integrally formed according to an embodiment of this application.

[0037] Figure 7 This is a schematic diagram of the structure of the second driver component in the embodiment of this application.

[0038] Figure 8 This is a cross-sectional view of the mold opening process of the embodiment of this application, in which the positioning block is still in the clearance position when the insert block just disengages from the slot.

[0039] Explanation of reference numerals in the attached drawings: 10. Plastic part; 11. Insert; 12. Mounting hole; 13. Threaded hole; 14. Wing; 21. Fixed mold; 22. Moving mold; 23. Locating block; 231. Through hole; 232. First connecting groove; 233. Sliding groove; 24. First groove; 25. Second groove; 26. Third groove; 27. Stepped surface; 38. Hot runner assembly; 31. Main runner; 32. Hot runner plate; 33. Hot nozzle; 331. First... 4. Nozzle; 5. Cylinder; 6. First boss; 7. First spring; 8. Insert block; 9. Slot; 10. Locking element; 11. Second spring; 12. Base block; 13. Moving block; 14. I-shaped block; 15. Extension block; 16. Unlocking element; 17. Unlocking block; 18. Second connecting groove; 19. Third spring; 10. First magnet; 11. Second magnet; 12. Extension rod; 13. Fixing ring; 14. Buffer pad. Detailed Implementation

[0040] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0041] This application discloses an integrated injection molding mold for the plastic outer decorative panel of an electric vehicle taillight.

[0042] Reference Figures 1-6This embodiment of an integrated injection molding mold for an electric vehicle taillight plastic outer decorative panel includes a fixed mold 21, a moving mold 22, a drive component 1, a positioning block 23, and a hot runner assembly 3. The drive component 1 drives the positioning block 23 to slide on the fixed mold 21. The hot runner assembly 3 includes a main runner 31, a hot runner plate 32, and multiple hot nozzles 33. The hot runner plate 32 is mounted on the fixed mold 21 and is used to connect the main runner 31 and the multiple hot nozzles 33. The hot nozzle 33 closest to the insert 11 is the first nozzle 331. The positioning block 23 has a through hole 231, and the first nozzle 331 passes through the through hole 231. When the positioning block 23 is in the working position, there is a gap between the first nozzle 331 and the inner wall of the through hole 231. When the positioning block 23 is in the clearance position, the first nozzle 331 is in contact with one side of the inner wall of the through hole 231.

[0043] Reference Figures 4-6 By positioning the first nozzle 331 close to the insert 11, the injection pressure for integral molding of the molten plastic and the insert 11 can be increased, thus improving the molding effect. By passing the first nozzle 331 through the through-hole 231 of the positioning block 23, when the positioning block 23 is in the clearance position, the first nozzle 331 is in contact with the inner wall of one side of the through-hole 231. The heat generated during the operation of the hot runner assembly 3 can be transferred to the positioning block 23 through the first nozzle 331, thereby preheating the insert 11 mounted on the positioning block 23. No additional electric oven or hot air circulation box is required; the residual heat of the mold's own hot runner is used to preheat the insert 11, significantly reducing long-term energy costs while also reducing equipment investment and space occupation.

[0044] Reference Figures 4-6 The driving component is a hydraulic cylinder 4, which is fixedly mounted on the fixed mold 21. The piston rod end of the hydraulic cylinder 4 is provided with a first boss 41. A first connecting groove 232 is provided through the positioning block 23. The first boss 41 slides in the first connecting groove 232 along the sliding direction of the positioning block 23.

[0045] Reference Figures 4-6 It also includes a first spring 51, a plug 52, a slot 53 and a second driving component. The first spring 51 is sleeved on the piston rod of the oil cylinder 4. The first spring 51 is located on the side of the first nozzle 331 away from the plastic part 10. The two ends of the first spring 51 abut against the oil cylinder 4 and the positioning block 23 respectively, and are used to drive the positioning block 23 to move toward the working position side.

[0046] Reference Figures 4-6 The first connecting groove 232 has a sliding groove 233 through the side wall. The plug 52 slides in the sliding groove 233. The driving member 2 drives the plug 52 to slide. The first boss 41 has a slot 53 that matches the end of the plug 52. When the plug 52 is inserted into the slot 53, the first boss 41 abuts against the end face of the first connecting groove 232 facing the plastic part 10.

[0047] Reference Figures 4-6 When the positioning block 23 is in the clearance position, the first nozzle 331 is in contact with the inner wall of one side of the through hole 231. The positioning block 23 will conduct heat from the first nozzle 331, causing its own temperature to always be much higher than the temperature of other parts of the mold. Operators can easily perceive the temperature of other parts of the mold, but it is difficult to perceive the local high temperature of the positioning block 23. If the positioning block 23 is accidentally touched during installation under unknown high temperature conditions, it can easily cause injury to the operator. Therefore, the position of the positioning block 23 is further positioned by the cooperation of the second drive component, the first spring 51, and the insert 52 and the slot 53, so that the positioning block 23 only begins to conduct heat after the insert 11 is installed, thus avoiding burns.

[0048] Reference Figures 4-8 The second driving component includes a locking component 6 and an unlocking component 7. The locking component 6 drives the insert 52 to always move toward the slot 53 side. The unlocking component 7 is used to drive the insert 52 to disengage from the slot 53 when the plastic part 10 moves to the outside of the positioning block 23 during the mold opening process. After the insert 52 disengages from the slot 53, the insert 52 always abuts against the outer wall of the first boss 41. The positioning block 23 moves to the side of the first connecting groove 232 away from the plastic part 10 and abuts against the first boss 41. A gap is left between the first nozzle 331 and the inner wall of the through hole 231.

[0049] Reference Figures 4-8 When the positioning block 23 is in the working position, the insert block 52 is inserted into the slot 53, and the hydraulic cylinder 4 can fully act on the positioning block 23 to resist the injection pressure. At this time, there is a gap between the first nozzle 331 and the inner wall of the through hole 231, so the heat of the first nozzle 331 will not be transferred to the positioning block 23, and will not affect the cooling of the injection molded part. After the injection is completed, the positioning block 23 is pulled out first. During the core pulling process, the insert block 52 and the slot 53 are always engaged. After the core pulling is completed, the first nozzle 331 is in contact with one side of the inner wall of the through hole 231, and the positioning block 23 begins to conduct heat. Then the next step is to open the mold. When the moving mold 22 moves to the plastic When part 10 is located outside the positioning block 23, the unlocking part 7 controls the insertion block 52 to unlock. Under the action of the first spring 51, the positioning block 23 moves away from the oil cylinder 4. At this time, there is a gap between the first nozzle 331 and the inner wall of the through hole 231 without external force. Then, the operator installs the insert 11 on the positioning block 23 and presses the insert 11 until the insertion block 52 and the slot 53 cooperate again. At this time, the first nozzle 331 is in contact with one side of the inner wall of the through hole 231, the positioning block 23 begins to conduct heat, and the positioning block 23 is in the clearance position. When injection begins, the mold is closed normally, and then the oil cylinder 4 drives the positioning block 23 to move to the working position.

[0050] Reference Figures 4-8The locking component 6 includes a second spring 61, a bottom block 62, and a moving block 63. A sliding groove is provided through the fixed mold 21. The moving block 63 is slidably connected in the sliding groove along the sliding direction parallel to the slot 53. The end of the insert block 52 away from the first boss 41 is slidably connected to the moving block 63 along the sliding direction parallel to the positioning block 23.

[0051] Reference Figures 4-8 The bottom block 62 is fixed to the fixed mold 21 by screws. The bottom block 62 is located between the fixed mold 21 and the moving mold 22. The two ends of the second spring 61 abut against the bottom block 62 and the moving block 63 respectively.

[0052] Reference Figures 4-8 Through the cooperation of the second spring 61, the bottom block 62, and the moving block 63, the insert block 52 is always driven to move toward the slot 53; the unlocking component 7 drives the insert block 52 to disengage from the slot 53 after the plastic part 10 moves to the outside of the positioning block 23 when the mold is opened. There is no need for manual operation to switch the working position and the clearance position of the positioning block 23, realizing the automated operation of the mold and improving production efficiency.

[0053] Reference Figures 4-8 The unlocking component 7 includes an unlocking block 71, a third spring 72, a first magnet 73, a second magnet 74, and a separating component.

[0054] Reference Figures 4-8 The slide includes a first groove 24 and a second groove 25. The radial dimension of the second groove 25 is larger than that of the first groove 24. The moving block 63 includes an I-shaped block 631 and two extension blocks 632. One end of the I-shaped block 631 slides in the first groove 24 and is slidably connected to the insert block 52. The two extension blocks 632 are respectively fixed on the two sides of the other end of the I-shaped block 631. The two extension blocks 632 slide in the second groove 25. The second spring 61 is located in the second groove 25. The two ends of the second spring 61 abut against the extension block 632 and the bottom block 62 respectively.

[0055] Reference Figures 4-8 The unlocking block 71 has a second connecting groove 711. The end of the I-shaped block 631 away from the insert block 52 slides in the second connecting groove 711. Two extension blocks 632 extend out from both sides of the unlocking block 71. The fixed mold 21 has a third groove 26. The radial dimension of the third groove 26 is between the first groove 24 and the second groove 25. A stepped surface 27 is formed at the connection between the third groove 26 and the first groove 24. The unlocking block 71 has an extension rod 75 on the side facing the bottom block 62. The bottom block 62 has a through hole in the center for the extension rod 75 to slide through. The third spring 72 is sleeved on the extension rod 75. The two ends of the third spring 72 abut against the unlocking block 71 and the bottom block 62 respectively. The second spring 61 surrounds the third spring 72.

[0056] Reference Figures 4-8The first magnet 73 is fixed to one end of the extension rod 75 facing the moving mold 22, and the second magnet 74 is fixed inside the moving mold 22. The first magnet 73 and the second magnet 74 attract each other. The separator is used to drive the first magnet 73 and the second magnet 74 to separate after the insert 52 is disengaged from the slot 53.

[0057] Reference Figures 4-8 When the mold is closed, the moving mold 22 and the fixed mold 21 are close to each other. The first magnet 73 attracts the second magnet 74, and the unlocking block 71 abuts against the step surface 27. The unlocking block 71 will not affect the moving block 63. The moving block 63 and the insert block 52 are held together by the second spring 61 with a driving force toward the slot 53. At this time, there is a gap between the moving block 63 and the unlocking block 71 that allows the insert block 52 to move away from the slot 53. During the mold opening stage, before the plastic part 10 moves to the outside of the positioning block 23, the first magnet 73 and the second magnet 74 are always in an adsorption state. At this time, the unlocking block 71 will overcome the elastic force of the third spring 72 and follow the moving mold 22. As the moving distance increases, when the plastic part 10 is about to move to the outside of the positioning block 23, the unlocking block 71 moves to abut against the I-shaped block 631, causing the moving block 63 to move down against the elastic force of the second spring 61 until the slot 53 disengages from the slot 53. At this time, under the action of the first spring 51, the positioning block 23 moves towards the side of the plastic part 10 without bumping into the plastic part 10. As the moving distance increases, under the action of the separating part, the first magnet 73 and the second magnet 74 separate. After losing the magnetic force, the unlocking block 71 will move back to abut against the step surface 27 under the action of the third spring 72.

[0058] Reference Figures 4-8 By balancing the magnetic attraction force and the spring force, the timing of the unlocking component 7 is precisely controlled, ensuring that the plastic component 10 is unlocked only after it is separated from the positioning block 23, thus avoiding interference between the plastic component 10 and the positioning block 23.

[0059] Reference Figures 4-8 The separating component includes a retaining ring 81, which is fixed to the bottom block 62. The outer wall of the retaining ring 81 fits against the inner wall of the second groove 25, and the inner wall of the retaining ring 81 is located in the third groove 26. The end of the second spring 61 away from the extension block 632 abuts against the retaining ring 81, and the retaining ring 81 surrounds the third spring 72. When the insert block 52 disengages from the slot 53, the unlocking block 71 abuts against the retaining ring 81.

[0060] Reference Figures 4-8 When the insert block 52 disengages from the slot 53, the unlocking block 71 abuts against the retaining ring 81, and the retaining ring 81 restricts the continued movement of the unlocking block 71, thereby separating the first magnet 73 from the second magnet 74.

[0061] Reference Figures 4-8The unlocking block 71 has a cushioning pad 82 at the end facing the step surface 27.

[0062] Reference ​ When the first magnet 73 separates from the second magnet 74, the unlocking block 71 will move and reset towards the step surface 27 under the action of the third spring 72. By setting the buffer pad 82, the collision force between the unlocking block 71 and the step surface 27 can be buffered, reducing the frequency of mold maintenance.

[0063] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. An integrated injection molding mold for an electric vehicle tail light plastic outer trim panel, characterized by: The injection molding machine comprises a fixed mold (21), a movable mold (22), a driving member one, a positioning block (23) and a hot runner assembly (3), the driving member one drives the positioning block (23) to slide on the fixed mold (21), the hot runner assembly (3) comprises a main runner (31), a hot runner plate (32) and a plurality of hot nozzles (33), the hot runner plate (32) is installed on the fixed mold (21), the hot runner plate (32) is used for connecting the main runner (31) and the plurality of hot nozzles (33), the first nozzle (331) closest to the insert (11) among the plurality of hot nozzles (33) is provided, a through hole (231) is formed in the positioning block (23), and the first nozzle (331) penetrates the through hole (231); when the positioning block (23) is in a working position, a gap is left between the first nozzle (331) and the inner wall of the through hole (231); when the positioning block (23) is in a avoiding position, the first nozzle (331) is attached to one side of the inner wall of the through hole (231).

2. The one-piece injection molding die for an electric vehicle tail lamp plastic outer trim panel of claim 1, wherein: The driving member one is an oil cylinder (4), the oil cylinder (4) is fixedly arranged on the fixed mold (21), a first boss (41) is arranged at the piston rod end of the oil cylinder (4), a first connecting groove (232) is formed in the positioning block (23), and the first boss (41) slides in the first connecting groove (232) along the sliding direction of the positioning block (23); The injection molding machine further comprises a first spring (51), an insertion block (52), an insertion groove (53) and a driving member two, the first spring (51) is sleeved on the piston rod of the oil cylinder (4), the first spring (51) is located on the side, away from the plastic part (10), of the first nozzle (331), and the two ends of the first spring (51) are respectively abutted on the oil cylinder (4) and the positioning block (23), so as to drive the positioning block (23) to move towards the working position side; A sliding groove (233) is formed in the side wall of the first connecting groove (232), the insertion block (52) slides in the sliding groove (233), the driving member two drives the insertion block (52) to slide, and the first boss (41) is provided with the insertion groove (53) matched with the end of the insertion block (52); when the insertion block (52) is inserted into the insertion groove (53), the first boss (41) is abutted on the end face of the first connecting groove (232) towards the plastic part (10).

3. The one-piece injection molding die for an electric vehicle tail lamp plastic outer trim panel of claim 2, wherein: The driving member two comprises a locking member (6) and an unlocking member (7), the locking member (6) drives the insertion block (52) to always move towards the side of the insertion groove (53); the unlocking member (7) is used for driving the insertion block (52) to be separated from the insertion groove (53) when the plastic part (10) moves to the outside of the positioning block (23) during mold opening; after the insertion block (52) is separated from the insertion groove (53), the insertion block (52) is always abutted on the outer wall of the first boss (41), the positioning block (23) is moved to the side end wall of the first connecting groove (232) away from the plastic part (10) and is abutted on the first boss (41), and a gap is left between the first nozzle (331) and the inner wall of the through hole (231).

4. The one-piece injection molding die for an electric vehicle tail lamp plastic outer trim panel of claim 3, wherein: The locking member (6) comprises a second spring (61), a bottom block (62) and a moving block (63), a sliding groove is formed in the fixed die (21), the moving block (63) is slidingly connected in the sliding groove in a sliding direction parallel to the insertion slot (53), and an end of the insertion block (52) away from the first boss (41) is slidingly connected with the moving block (63) in a sliding direction parallel to the positioning block (23); The bottom block (62) is fixed on the fixed die (21) by a screw, and the bottom block (62) is located between the fixed die (21) and the movable die (22), and the two ends of the second spring (61) are respectively abutted on the bottom block (62) and the moving block (63).

5. The one-piece injection molding die for an electric vehicle tail lamp plastic outer trim panel of claim 4, wherein: The unlocking member (7) comprises an unlocking block (71), a third spring (72), a first magnet (73), a second magnet (74) and a separating member; The sliding groove comprises a first groove (24) and a second groove (25), the radial dimension of the second groove (25) is greater than that of the first groove (24), the moving block (63) comprises a work-shaped block (631) and two extension blocks (632), one end of the work-shaped block (631) is slidingly connected in the first groove (24) and slidingly connected with the insertion block (52), the two extension blocks (632) are respectively fixed on the two side faces of the other end of the work-shaped block (631), and the two extension blocks (632) are slidingly connected in the second groove (25), the second spring (61) is located in the second groove (25), and the two ends of the second spring (61) are respectively abutted on the extension blocks (632) and the bottom block (62); A second connecting groove (711) is formed in the unlocking block (71), one end of the work-shaped block (631) away from the insertion block (52) is slidingly connected in the second connecting groove (711), the two extension blocks (632) respectively extend on the two sides of the unlocking block (71), a third groove (26) is formed in the fixed die (21), the radial dimension of the third groove (26) is between those of the first groove (24) and the second groove (25), a stepped face (27) is formed at the connection between the third groove (26) and the first groove (24), the unlocking block (71) has an extension rod (75) on the side facing the bottom block (62), a through hole is formed in the center of the bottom block (62) for slidingly connecting the extension rod (75), the third spring (72) is sleeved on the extension rod (75), the two ends of the third spring (72) are respectively abutted on the unlocking block (71) and the bottom block (62), and the second spring (61) surrounds the third spring (72); The first magnet (73) is fixed on one end of the extension rod (75) facing the movable die (22), the second magnet (74) is fixed in the movable die (22), the first magnet (73) and the second magnet (74) are mutually adsorbed, and the separating member is used to drive the first magnet (73) and the second magnet (74) to separate after the insertion block (52) is separated from the insertion slot (53).

6. The one-piece injection molding die for an electric vehicle tail lamp plastic outer trim panel of claim 5, wherein: The separating piece comprises a fixing ring (81) fixed on the bottom block (62), the outer wall of the fixing ring (81) is attached to the inner wall of the second groove (25), the inner wall of the fixing ring (81) is located in the third groove (26), the end of the second spring (61) away from the extending block (632) is abutted on the fixing ring (81), and the fixing ring (81) surrounds the third spring (72) inside; when the plug-in block (52) is separated from the plug-in groove (53), the unlocking block (71) is abutted on the fixing ring (81).

7. The one-piece injection molding die for an electric vehicle tail lamp plastic outer trim panel of claim 5, wherein: The end of the unlocking block (71) towards the step face (27) is provided with a buffer soft pad (82).

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