Electric vehicle headlamp mask forming mold with sliding block inner pulling demolding mechanism

Abstract

The utility model provides an electric vehicle headlamp mask forming mold with a sliding block inner pulling demolding mechanism, and belongs to the technical field of molds. The double-pipe injection mold comprises an upper mold plate and a lower mold plate, a forming cavity is formed between the upper mold plate and the lower mold plate, a double-pipe injection molding assembly connected with the forming cavity is arranged on the upper side of the upper mold plate, and two symmetrically-arranged sliding block inner pulling demolding mechanisms are further arranged on the lower mold plate. And the sliding block inner-pulling demolding mechanism is connected with the side part of a forming insert which is arranged on the lower mold plate in a protruding manner. Injection molding liquid is injected into the molding cavity through the double-pipe injection molding assembly, the injection molding efficiency can be improved, the sliding block inner pulling demolding mechanism can mold a buckle structure on the inner side wall of the mask during mask injection molding and can automatically pull a core inwards before demolding, later machining is not needed, the mask production procedures can be reduced, the production efficiency is improved, and the production cost is reduced. The multi-point ejection mechanism can apply thrust to the product through multiple points, so that the product can be ejected out of the lower mold plate without damage.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a molding mold for electric vehicle headlight cover with a slider internal demolding mechanism. Background Technology

[0002] Electric vehicle headlight covers are generally injection molded using molds. The inside of the electric vehicle headlight cover needs to be machined with a snap-fit ​​structure after molding, making the production process relatively complex.

[0003] For example, a Chinese patent discloses a headlight dual-color mask anti-loosening mold [application number: 201711063810.1], which includes a moving mold and a fixed mold. The feature is that: at least two sets of moving mold sliders are arranged around the outer sides of the first moving mold cavity and the second moving mold cavity; at least two sets of fixed mold locking blocks are arranged around the outer sides of the first fixed mold cavity and the second fixed mold cavity, and the moving mold sliders on the moving mold and the fixed mold locking blocks on the fixed mold are symmetrically arranged. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned problems by providing a molding die for an electric vehicle headlight cover with an internal sliding block demolding mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A molding die for an electric vehicle headlight cover with a slider internal ejection mechanism includes an upper mold plate and a lower mold plate. A molding cavity is provided between the upper mold plate and the lower mold plate. A double-tube injection molding assembly connected to the molding cavity is provided on the upper side of the upper mold plate. Two symmetrically arranged slider internal ejection mechanisms are also provided on the lower mold plate. The slider internal ejection mechanisms are connected to the side of the molding inserts protruding on the lower mold plate. A multi-point ejection mechanism is also provided on the lower side of the lower mold plate.

[0007] In the above-mentioned electric vehicle headlight cover molding mold with a slider inner extraction demolding mechanism, the slider inner extraction demolding mechanism includes a bracket fixed to the bottom of the lower template, a lifting component is provided on the lower side of the bracket, and an inner extraction slider connected to the lifting component is provided on the upper side of the bracket. A core block mounting block is also horizontally slidably connected inside the molding insert. A core block is provided on the side of the core block mounting block away from the inner extraction slider and connected to the molding cavity. The core block mounting block is connected to the inner extraction slider through an inclined guide structure.

[0008] In the above-mentioned electric vehicle headlight cover molding mold with a slider inner ejection mechanism, the inclined guide structure includes an inclined guide groove recessed inward on the inclined surface of the inner ejection slider and an inclined guide block protruding on the inclined surface of the core block mounting block, wherein the inclined guide block is inserted into the inclined guide groove.

[0009] In the above-mentioned electric vehicle headlight cover molding mold with slider internal ejection mechanism, the cross-section of the inclined guide block and the inclined guide groove is T-shaped.

[0010] In the above-mentioned electric vehicle headlight cover molding mold with slider inner extraction demolding mechanism, the lifting assembly includes a lifting cylinder fixed to the bottom of the bracket, and the output shaft of the lifting cylinder passes through the bracket and is connected to the inner extraction slider.

[0011] In the above-mentioned electric vehicle headlight cover molding mold with slider inner extraction demolding mechanism, the bottom of the inner extraction slider is provided with a T-shaped connecting groove, and the output shaft end of the lifting cylinder has a T-shaped joint that slides with the connecting groove. The T-shaped joint and the connecting groove slide with each other.

[0012] In the above-mentioned electric vehicle headlight cover molding mold with slider internal ejection mechanism, the dual-tube injection molding assembly includes a V-shaped injection plate disposed on the upper side of the upper mold plate, two injection tubes are fixedly connected to the V-shaped injection plate, and two inlet channels are respectively connected to the two injection tubes in the inward recess of the lower mold plate.

[0013] In the above-mentioned electric vehicle headlight cover molding mold with slider internal ejection mechanism, the multi-point ejection mechanism includes a top plate disposed on the lower side of the lower template, and the top plate is provided with a plurality of straight ejector rods, wherein the top of the plurality of straight ejector rods is provided with a straight ejector block.

[0014] In the above-mentioned electric vehicle headlight cover molding mold with slider internal demolding mechanism, two inclined push rods are symmetrically arranged on the top plate.

[0015] In the above-mentioned electric vehicle headlight cover molding mold with a slider internal demolding mechanism, the lower template is also provided with several detachable inserts.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. Injecting injection liquid into the molding cavity through the dual-tube injection molding assembly can improve injection molding efficiency. The slider-in-mold ejection mechanism can form a snap-fit ​​structure on the inner wall of the mask during injection molding and can automatically pull the core inward before demolding, eliminating the need for post-processing. This reduces the production steps of the mask and improves production efficiency. The multi-point ejection mechanism can apply pushing force to the product through multiple points, thereby ejecting the product from the lower template without damage.

[0018] 2. After the product is injection molded, the lifting component drives the inner sliding block to move downwards, which can drive the core block mounting block and the core block to move horizontally to the inside of the molding insert through the inclined guide structure, thereby realizing the automatic core pulling of the core block.

[0019] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 3 This is a structural diagram of the lower template;

[0023] Figure 4 This is a partial structural diagram of the lower template;

[0024] Figure 5 This is a schematic diagram of the internal ejection mechanism of the slider. Detailed Implementation

[0025] like Figures 1-5 As shown, a molding die for an electric vehicle headlight cover with a slider internal ejection mechanism includes an upper mold plate 1 and a lower mold plate 2. A molding cavity is provided between the upper mold plate 1 and the lower mold plate 2. A double-tube injection molding assembly 3 connected to the molding cavity is provided on the upper side of the upper mold plate 1. Two symmetrically arranged slider internal ejection mechanisms 4 are also provided on the lower mold plate 2. The slider internal ejection mechanisms 4 are connected to the side of the protruding molding insert 5 on the lower mold plate 2. A multi-point ejection mechanism 6 is also provided on the lower side of the lower mold plate 2.

[0026] In this invention, the injection of injection liquid into the molding cavity through the dual-tube injection molding assembly 3 can improve injection efficiency. The slider-in-mold-release mechanism 4 can form a snap-fit ​​structure on the inner wall of the mask during injection molding and can automatically pull the core inward before demolding, eliminating the need for post-processing, reducing the production steps of the mask and improving production efficiency. The multi-point ejection mechanism can apply pushing force to the product through multiple points, thereby ejecting the product from the lower template without damage.

[0027] Specifically, the inner ejection mechanism 4 includes a bracket 7 fixed to the bottom of the lower mold plate 2. A lifting assembly is located on the lower side of the bracket 7, and an inner ejection slider 8 connected to the lifting assembly is located on the upper side of the bracket 7. A core block mounting block 9 is horizontally slidably connected within the molding insert 5. A core block 10, connected to the molding cavity, protrudes from the side of the core block mounting block 9 away from the inner ejection slider 8. The core block mounting block 9 is connected to the inner ejection slider 8 via an oblique guide structure. After injection molding, the lifting assembly drives the inner ejection slider downwards, which, through the oblique guide structure, causes the core block mounting block and the core block to move horizontally towards the inside of the molding insert, thus achieving automatic core extraction.

[0028] Specifically, the inclined guide structure includes an inclined guide groove 11 recessed inward on the inclined surface of the inner sliding block 8 and an inclined guide block 12 protruding from the inclined surface of the core block mounting block 9. The inclined guide block 12 is inserted into the inclined guide groove 11. The vertical movement of the inner sliding block can drive the core block mounting block to move horizontally reciprocally through the cooperation of the inclined guide groove 11 and the inclined guide block.

[0029] Specifically, the cross-sections of the inclined guide block 12 and the inclined guide groove 11 are T-shaped.

[0030] Specifically, the lifting assembly includes a lifting cylinder 13 fixed to the bottom of the bracket 7. The output shaft of the lifting cylinder 13 passes through the bracket 7 and is connected to the inner sliding block 8. The action of the lifting cylinder can drive the inner sliding block to rise and fall vertically.

[0031] Specifically, the bottom of the inner sliding block 8 is provided with a T-shaped connecting groove 14, and the output shaft end of the lifting cylinder 13 has a T-shaped connector that slides in conjunction with the connecting groove 14. The T-shaped connector and the connecting groove 14 slide in conjunction. The T-shaped connecting groove 14 and the T-shaped connector facilitate the disassembly and removal of the lifting cylinder and the inner sliding block.

[0032] Specifically, the dual-tube injection molding assembly 3 includes a V-shaped injection plate 15 disposed on the upper side of the upper mold plate 1. Two injection tubes 16 are fixedly connected to the V-shaped injection plate 15. The lower mold plate 2 has two inwardly recessed injection channels 17, which are respectively connected to the two injection tubes 16. During injection molding, the V-shaped injection plate can divert the injection liquid into the two injection tubes, and the injection liquid injected into the injection tubes can enter the molding cavity through the injection channels.

[0033] Specifically, the multi-point ejection mechanism 6 includes a top plate 18 disposed on the lower side of the lower template 2. The top plate 18 is provided with a plurality of straight ejector rods 19, each with a straight ejector block 20 at its top. Two inclined ejector rods 21 are also symmetrically disposed on the top plate 18. When the top plate moves upward, it can apply a vertically upward thrust to the product through the straight ejector rods and straight ejector blocks. The upward movement of the top plate can also apply an obliquely upward thrust to the product through the two inclined ejector rods. The cooperation of the straight and inclined ejector rods can prevent damage to the product during ejection.

[0034] Preferably, the lower template 2 is also provided with a plurality of detachable inserts 22. The detachable inserts facilitate replacement in case of damage.

[0035] The working principle of this utility model is as follows: the injection of injection liquid into the molding cavity through the double-tube injection molding component 3 can improve the injection efficiency; the slider internal demolding mechanism 4 can form a buckle structure on the inner side wall of the mask during injection molding and can automatically pull the core inward before demolding, without the need for post-processing, which can reduce the production process of the mask and improve production efficiency; the multi-point ejection mechanism can apply pushing force to the product through multiple points, thereby ejecting the product from the lower template without damage.

[0036] After the product is injection molded, the lifting component drives the inner sliding block to move downward, which can drive the core block mounting block and the core block to move horizontally to the inside of the molding insert through the inclined guide structure, thereby realizing the automatic core removal of the core block. The inner sliding block moves vertically, which can drive the core block mounting block to move horizontally back and forth through the cooperation of the inclined guide groove 11 and the inclined guide block. The lifting cylinder can drive the inner sliding block to rise and fall vertically. The T-shaped connecting groove 14 and the T-type joint can facilitate the disassembly of the lifting cylinder and the inner sliding block.

[0037] During injection molding, the V-shaped injection plate can divert the injection liquid into two injection tubes. The injection liquid injected into the injection tubes can enter the molding cavity through the injection channel. When the top plate moves upward, it can apply a vertical upward thrust to the product through the straight ejector rod and straight ejector block. When the top plate moves upward, it can also apply an oblique upward thrust to the product through the two angled ejector rods. The cooperation of the straight and angled ejectors can prevent the product from being damaged during ejection.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A molding die for an electric vehicle headlight cover with an internal sliding block demolding mechanism, comprising an upper template (1) and a lower template (2), characterized in that, A molding cavity is provided between the upper template (1) and the lower template (2). A double-tube injection molding assembly (3) connected to the molding cavity is provided on the upper side of the upper template (1). Two symmetrically arranged slider internal ejection mechanisms (4) are also provided on the lower template (2). The slider internal ejection mechanism (4) is connected to the side of the protruding molding insert (5) on the lower template (2). A multi-point ejection mechanism (6) is also provided on the lower side of the lower template (2).

2. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 1, characterized in that, The inner ejection mechanism (4) of the slider includes a bracket (7) fixed to the bottom of the lower template (2). A lifting component is provided on the lower side of the bracket (7). An inner ejection slider (8) connected to the lifting component is provided on the upper side of the bracket (7). A core block mounting block (9) is also horizontally slidably connected inside the molding insert (5). A core block (10) connected to the molding cavity is provided on the side of the core block mounting block (9) away from the inner ejection slider (8). The core block mounting block (9) is connected to the inner ejection slider (8) through an inclined guide structure.

3. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 2, characterized in that, The oblique guide structure includes an oblique guide groove (11) recessed inward on the inclined surface of the inner sliding block (8) and an oblique guide block (12) protruding on the inclined surface of the core block mounting block (9), wherein the oblique guide block (12) is inserted into the oblique guide groove (11).

4. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 3, characterized in that, The cross-sections of the inclined guide block (12) and the inclined guide groove (11) are T-shaped.

5. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 3, characterized in that, The lifting assembly includes a lifting cylinder (13) fixed to the bottom of the bracket (7), and the output shaft of the lifting cylinder (13) passes through the bracket (7) and is connected to the inner sliding block (8).

6. The electric vehicle headlight cover molding die with a slider internal ejection mechanism according to claim 5, characterized in that, The bottom of the inner sliding block (8) is provided with a T-shaped connecting groove (14), and the output shaft end of the lifting cylinder (13) has a T-shaped joint that slides with the connecting groove (14). The T-shaped joint and the connecting groove (14) slide with each other.

7. The electric vehicle headlight cover molding die with a slider internal ejection mechanism according to claim 1, characterized in that, The dual-tube injection molding assembly (3) includes a V-shaped injection plate (15) disposed on the upper side of the upper template (1), and two injection tubes (16) are fixedly connected to the V-shaped injection plate (15). The lower template (2) is recessed inward and has two glue inlet channels (17) respectively connected to the two injection tubes (16).

8. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 1, characterized in that, The multi-point ejection mechanism (6) includes a top plate (18) disposed on the lower side of the lower template (2), and a plurality of straight ejector rods (19) are disposed on the top plate (18), wherein a straight ejector block (20) is disposed on the top of the plurality of straight ejector rods (19).

9. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 8, characterized in that, Two inclined top rods (21) are symmetrically arranged on the top plate (18).

10. The electric vehicle headlight cover molding mold with a slider internal ejection mechanism according to claim 8, characterized in that, The lower template (2) is also provided with several detachable inserts (22).

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