Complex side core-pulling mechanism of injection mold for automobile lamp lens

Abstract

The utility model provides a complex side core-pulling mechanism of an injection mold for an automobile lamp lens, and belongs to the technical field of molds. The die comprises an upper die plate and a lower die plate, two forming cavities are symmetrically formed between the upper die plate and the lower die plate, the lower die plate is provided with a combined insert structure forming the forming cavities, and the combined insert structure comprises a fixed insert, a movable insert and a limiting insert. The movable insert forming the forming cavity corresponds to the front end of the lens product, and due to the fact that the pulling force of the position of the lens product is large during ejection, in order to prevent the product from being damaged, the tunnel type core pulling assembly can drive the movable insert to obliquely move in the direction away from the forming cavity during mold opening, so that the movable insert and the product can be separated, and the mold opening efficiency is improved. The fixed insert is arranged on the movable insert, so that stress at all positions is balanced when the product is separated from the movable insert, other parts of the product can be supported through the fixed insert when the movable insert moves, and the possibility that the product is damaged is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a complex side core-pulling mechanism of an injection mold for a light distribution mirror of an automobile lamp. Background Art

[0002] Automobile headlight mirrors are generally molded by mold injection. The outer surface of the headlight mirror is curved. During injection molding, the connection between the front end of the mirror product and the lower mold plate is infinitely close to vertical. This causes a huge pulling force between the front end of the mirror product and the lower mold plate when the product is ejected, which can easily cause product damage.

[0003] For example, a Chinese patent discloses an injection mold for a headlight lens for an automobile [application number: 202021798017.3], comprising an upper mold and a lower mold arranged opposite to the upper mold, wherein a first parting surface is provided on the lower surface of the upper mold, and an inwardly concave molding cavity is provided on the first parting surface, and a second parting surface is provided on the upper surface of the lower mold, and a molding boss matching the molding cavity is provided on the second parting surface; wherein the first parting surface and the second parting surface are concave and convex matching inclined surfaces; the upper mold and the lower mold are matched, the molding boss is embedded in the molding cavity, and the first parting surface is fitted with the second parting surface to form a molding cavity located between the upper mold and the lower mold. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a complex side core-pulling mechanism for an injection mold of a light distribution mirror for a car lamp.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A complex side core pulling mechanism of an injection mold for a headlight mirror of an automobile comprises an upper mold plate and a lower mold plate, two molding cavities are symmetrically arranged between the upper mold plate and the lower mold plate, a combined insert structure constituting the molding cavity is arranged on the lower mold plate, the combined insert structure comprises a fixed insert, a movable insert and a limit insert, a tunnel core pulling assembly capable of driving the movable insert to move obliquely away from the molding cavity is arranged on the lower mold plate, an outer core pulling assembly No. 1 and an outer core pulling assembly No. 2 respectively connected to the fixed insert and the movable insert are arranged on the outer side of the molding cavity, and two inner core pulling assemblies No. 1 connected to the fixed insert and a No. 2 inner core pulling assembly connected to the movable insert are arranged on the inner side of the molding cavity.

[0007] In the above-mentioned complex side core-pulling mechanism of the automobile headlight mirror injection mold, the tunnel-type core-pulling assembly includes a tunnel slider slidably arranged in the lower mold plate and located below the fixed insert, the tunnel slider is connected to the movable insert through an oblique guide structure, and an inclined limiting structure is also provided between the movable insert and the limiting insert. The upper mold plate is provided with a drive rod mounting seat inserted into the lower mold plate, and an inclined No. 1 drive rod is fixedly connected to the bottom of the drive rod mounting seat, and the No. 1 drive rod is obliquely inserted into the tunnel slider.

[0008] In the above-mentioned complex side core pulling mechanism of the automobile headlight mirror injection mold, the inclined guide structure includes an inclined slide groove obliquely arranged at the inner end of the tunnel slider, and the movable insert is protrudingly provided with a guide slider inserted into the inclined slide groove, and the cross-section of the inclined slide groove and the guide slider is T-shaped.

[0009] In the above-mentioned complex side core pulling mechanism of the automobile headlight mirror injection mold, a limit slider with a T-shaped cross-section is protruded on the inner end surface of the limit insert, the limit slider and the guide slider are perpendicular, and the limit slider is inserted into the movable insert and slidably connected to the movable insert.

[0010] In the above-mentioned complex side core pulling mechanism of the automobile headlight mirror injection mold, the No. 1 outer core pulling component includes a No. 1 outer core pulling seat arranged on the outside of the molding cavity, and the inner end of the No. 1 outer core pulling seat is fixedly connected to a No. 1 outer core block connected to a fixed insert, and the upper mold plate is also fixedly connected to an inclined No. 2 drive rod, and the No. 2 drive rod is inserted into the No. 1 outer core pulling seat.

[0011] In the above-mentioned complex side core pulling mechanism of the automobile headlight mirror injection mold, the No. 2 outer core pulling assembly includes a No. 2 outer core pulling seat arranged on the outside of the molding cavity, and the inner end of the No. 2 outer core pulling seat is fixedly connected to the No. 2 outer core block connected to the movable insert, and the upper mold plate is also fixedly connected to an inclined No. 3 driving rod, and the No. 3 driving rod is inserted into the No. 2 outer core pulling seat.

[0012] In the above-mentioned complex side core pulling mechanism of the automobile headlight mirror injection mold, the No. 1 inner core pulling component includes a No. 1 inner core pulling seat arranged on the inner side of the molding cavity, and the inner end of the No. 1 inner core pulling seat is fixedly connected to a No. 1 inner core block connected to a fixed insert, and the upper mold plate is also fixedly connected to an inclined No. 4 drive rod, and the No. 4 drive rod is inserted into the No. 1 inner core pulling seat.

[0013] In the above-mentioned complex side core-pulling mechanism of the automobile headlight mirror injection mold, the No. 2 inner core-pulling assembly includes a No. 2 inner core-pulling seat arranged on the inner side of the molding cavity, and the inner end of the No. 2 inner core-pulling seat is fixedly connected to a No. 2 inner core block connected to the movable insert, and the upper mold plate is also fixedly connected to an inclined No. 5 drive rod, and the No. 5 drive rod is inserted into the No. 2 inner core-pulling seat.

[0014] In the above-mentioned complex side core-pulling mechanism of the automobile headlight mirror injection mold, the upper mold plate is provided with a top mold constituting a molding cavity, and the top mold is detachably connected to the upper mold plate by a plurality of screws.

[0015] In the above-mentioned complex side core-pulling mechanism of the automobile headlight mirror injection mold, the fixed insert and the limit insert are both detachably connected to the lower mold plate through a plurality of screws.

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

[0017] 1. The movable insert constituting the molding cavity corresponds to the front end of the photosensitive lens product. Since the pulling force at this position of the photosensitive lens product is relatively large during ejection, in order to prevent the product from being damaged, the tunnel-type core-pulling assembly in the present application can drive the movable insert to move obliquely away from the molding cavity when the mold is opened, thereby separating the movable insert from the product, so that the force at each position is balanced when the product and the movable insert are separated, and when the movable insert moves, the rest of the product can be supported by the fixed insert, further reducing the possibility of product damage.

[0018] 2. When the mold is opened, the upper template moves vertically upward. The upward movement of the upper template can drive the No. 1 driving rod to move vertically upward through the driving rod mounting seat. The vertical upward movement of the No. 1 driving rod can drive the tunnel slider to move horizontally away from the moving insert. The movement of the tunnel slider can drive the moving insert to move obliquely away from the molding cavity through the oblique guide structure, thereby separating the moving insert from the product. The inclined limiting structure between the moving insert and the limiting insert can limit the moving insert.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the upper template;

[0021] Figure 2 It is a schematic diagram of the external structure of the lower template;

[0022] Figure 3 It is a schematic diagram of the local structure of the lower template;

[0023] Figure 4 It is a schematic diagram of the local structure of the upper template;

[0024] Figure 5 It is an exploded diagram of the tunnel core pulling assembly.

[0025] In the figure, an upper template 1, a lower template 2, a combined insert structure 4, a fixed insert 5, a movable insert 6, a limit insert 7, a tunnel type core pulling assembly 8, an outer core pulling assembly No. 1 9, an outer core pulling assembly No. 2 10, an inner core pulling assembly No. 1 11, an inner core pulling assembly No. 2 12, a tunnel slider 13, a drive rod mounting seat 14, a drive rod No. 1 15, an inclined slide 16, a guide slider 17, a limit slider 18, an outer core pulling seat No. 1 19, a drive rod No. 2 20, an outer core pulling seat No. 2 21, a drive rod No. 3 22, an inner core pulling seat No. 1 23, a drive rod No. 4 24, an inner core pulling seat No. 2 25, a drive rod No. 5 26, and a top mold 27. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, a complex side core pulling mechanism of an injection mold for a headlight mirror of an automobile comprises an upper mold plate 1 and a lower mold plate 2, two molding cavities are symmetrically arranged between the upper mold plate 1 and the lower mold plate 2, a combined insert structure 4 constituting the molding cavity is arranged on the lower mold plate 2, the combined insert structure 4 comprises a fixed insert 5, a movable insert 6 and a limit insert 7, a tunnel core pulling assembly 8 capable of driving the movable insert 6 to move obliquely away from the molding cavity is arranged on the lower mold plate 2, an outer core pulling assembly No. 1 9 and an outer core pulling assembly No. 2 10 respectively connected to the fixed insert 5 and the movable insert 6 are arranged on the outer side of the molding cavity, and two inner core pulling assemblies No. 1 11 connected to the fixed insert 5 and a inner core pulling assembly No. 2 12 connected to the movable insert 6 are arranged on the inner side of the molding cavity.

[0027] In the present invention, the movable insert 6 constituting the molding cavity corresponds to the front end of the photometric lens product. Since the pulling force at this position of the photometric lens product is relatively large during ejection, in order to prevent the product from being damaged, the tunnel-type core-pulling assembly 8 in the present application can drive the movable insert 6 to move obliquely away from the molding cavity during mold opening, thereby separating the movable insert from the product, so that the forces at each position are balanced when the product and the movable insert are separated, and the fixed insert can also support the rest of the product when the movable insert moves, further reducing the possibility of product damage;

[0028] When the mold is opened, the No. 1 outer core pulling assembly 9, the No. 2 outer core pulling assembly 10, the No. 1 inner core pulling assembly 11 and the No. 2 inner core pulling assembly 12 can all automatically perform core pulling without setting up a driving cylinder, which can reduce the mold cost.

[0029] Specifically, the tunnel core pulling assembly 8 includes a tunnel slider 13 slidably arranged in the lower mold plate 2 and located below the fixed insert 5. The tunnel slider 13 is connected to the movable insert 6 through an oblique guide structure. An oblique limiting structure is also arranged between the movable insert 6 and the limiting insert 7. The upper mold plate 1 is provided with a driving rod mounting seat 14 inserted into the lower mold plate 2. The bottom of the driving rod mounting seat 14 is fixedly connected with an obliquely arranged No. 1 driving rod 15, and the No. 1 driving rod 15 is obliquely inserted into the tunnel slider 13. When the mold is opened, the upper mold plate moves vertically upward. The upward movement of the upper mold plate can drive the No. 1 driving rod to move vertically upward through the driving rod mounting seat. The vertical upward movement of the No. 1 driving rod can drive the tunnel slider to move horizontally away from the movable insert. The movement of the tunnel slider can drive the movable insert 6 to move obliquely away from the molding cavity through the oblique guide structure, so that the movable insert and the product can be separated. The oblique limiting structure between the movable insert 6 and the limiting insert 7 can limit the movable insert.

[0030] Specifically, the oblique guide structure includes an inclined slide groove 16 obliquely arranged at the inner end of the tunnel slider 13, and a guide slider 17 protruding from the movable insert 6 and inserted into the inclined slide groove 16, and the cross-section of the inclined slide groove 16 and the guide slider 17 is T-shaped. The movement of the tunnel slider 13 can achieve the push and pull of the movable insert through the cooperation of the inclined slide groove 16 and the guide slider 17.

[0031] Specifically, a limiting slider 18 with a T-shaped cross section is protruded from the inner end surface of the limiting insert 7, the limiting slider 18 is perpendicular to the guide slider 17, and the limiting slider 18 is inserted into the moving insert 6 and is slidably connected with the moving insert 6. When the moving insert is subjected to the force of the tunnel slider, the limiting slider on the limiting insert 7 can limit the moving insert so that the moving insert can be obliquely moved toward or away from the molding cavity.

[0032] Specifically, the No. 1 outer core pulling assembly 9 includes a No. 1 outer core pulling seat 19 arranged outside the molding cavity, the inner end of the No. 1 outer core pulling seat 19 is fixedly connected to the No. 1 outer core block connected to the fixed insert 5, and the upper mold plate 1 is also fixedly connected to the No. 2 driving rod 20 arranged obliquely, and the No. 2 driving rod 20 is inserted into the No. 1 outer core pulling seat 19. When the upper mold plate moves upward, the No. 1 outer core pulling seat 19 can be driven by the No. 2 driving rod arranged obliquely to move away from the molding cavity, so that the No. 1 outer core block and the product can be separated.

[0033] Specifically, the No. 2 outer core pulling assembly 10 includes a No. 2 outer core pulling seat 21 arranged outside the molding cavity, the inner end of the No. 2 outer core pulling seat 21 is fixedly connected to the No. 2 outer core block connected to the movable insert 6, and the upper mold plate 1 is also fixedly connected to the No. 3 driving rod 22 arranged obliquely, and the No. 3 driving rod 22 is inserted into the No. 2 outer core pulling seat 21. When the upper mold plate moves upward, the No. 2 outer core pulling seat can be driven to move away from the molding cavity through the No. 3 driving rod arranged obliquely, so that the No. 2 outer core block and the product can be separated.

[0034] Specifically, the No. 1 inner core pulling assembly 11 includes a No. 1 inner core pulling seat 23 arranged inside the molding cavity, the inner end of the No. 1 inner core pulling seat 23 is fixedly connected to a No. 1 inner core block connected to the fixed insert 5, and the upper mold plate 1 is also fixedly connected to a No. 4 driving rod 24 arranged obliquely, and the No. 4 driving rod 24 is inserted into the No. 1 inner core pulling seat 23. When the upper mold plate moves upward, the No. 1 inner core pulling seat can be driven to move away from the molding cavity through the No. 4 driving rod arranged obliquely, so that the No. 1 inner core block and the product can be separated.

[0035] Specifically, the No. 2 inner core pulling assembly 12 includes a No. 2 inner core pulling seat 25 arranged inside the molding cavity, the inner end of the No. 2 inner core pulling seat 25 is fixedly connected to the No. 2 inner core block connected to the moving insert 6, and the upper mold plate 1 is also fixedly connected to the No. 5 driving rod 26 arranged obliquely, and the No. 5 driving rod 26 is inserted into the No. 2 inner core pulling seat 25. When the upper mold plate moves upward, the No. 2 inner core pulling seat can be driven to move away from the molding cavity through the inclined No. 5 driving rod, so that the No. 2 inner core block and the product can be separated.

[0036] Specifically, the upper mold plate 1 is provided with a top mold 27 constituting a molding cavity, and the top mold 27 is detachably connected to the upper mold plate 1 through a plurality of screws. The detachable connection between the top mold 27 and the upper mold plate 1 can facilitate disassembly and replacement when damaged.

[0037] Specifically, the fixed insert 5 and the limiting insert 7 are both detachably connected to the lower template 2 by a plurality of screws, so that they can be easily disassembled and replaced when damaged.

[0038] The working principle of the utility model is as follows: the moving insert 6 constituting the molding cavity corresponds to the front end of the photometric lens product. Since the pulling force at this position of the photometric lens product is relatively large during ejection, in order to prevent the product from being damaged, the tunnel-type core-pulling assembly 8 in the present application can drive the moving insert 6 to move obliquely away from the molding cavity during mold opening, thereby enabling the moving insert to separate from the product, so that the forces at each position are balanced when the product and the moving insert are separated, and the remaining parts of the product can also be supported by the fixed insert when the moving insert moves, further reducing the possibility of product damage; during mold opening, the No. 1 outer core-pulling assembly 9, the No. 2 outer core-pulling assembly 10, the No. 1 inner core-pulling assembly 11 and the No. 2 inner core-pulling assembly 12 can all automatically perform core pulling without the need to set up a driving cylinder, thereby reducing mold costs;

[0039] When the mold is opened, the upper template moves vertically upward. The upward movement of the upper template can drive the No. 1 driving rod to move vertically upward through the driving rod mounting seat. The No. 1 driving rod can drive the tunnel slider to move horizontally to the side away from the moving insert. The movement of the tunnel slider can drive the moving insert 6 to move obliquely away from the molding cavity through the oblique guide structure, so that the moving insert and the product can be separated. The inclined limiting structure between the moving insert 6 and the limiting insert 7 can limit the moving insert. The movement of the tunnel slider 13 can achieve the push and pull of the moving insert through the cooperation of the inclined slide groove 16 and the guide slider 17. When the moving insert is subjected to the force of the tunnel slider, the limiting slider on the limiting insert 7 can limit the moving insert, so that the moving insert can be moved obliquely toward or away from the molding cavity.

[0040] When the upper template moves upward, the inclined No. 2 driving rod can drive the No. 1 outer core pulling seat 19 to move away from the molding cavity, so that the No. 1 outer core block and the product can be separated. When the upper template moves upward, the inclined No. 3 driving rod can drive the No. 2 outer core pulling seat to move away from the molding cavity, so that the No. 2 outer core block and the product can be separated. When the upper template moves upward, the inclined No. 4 driving rod can drive the No. 1 inner core pulling seat to move away from the molding cavity, so that the No. 1 inner core block and the product can be separated. When the upper template moves upward, the inclined No. 5 driving rod can drive the No. 2 inner core pulling seat to move away from the molding cavity, so that the No. 2 inner core block and the product can be separated. The detachable connection between the top mold 27 and the upper mold 1 can be convenient for disassembly and replacement when damaged.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0042] Although this article uses the upper template 1, the lower template 2, the combined insert structure 4, the fixed insert 5, the movable insert 6, the limit insert 7, the tunnel core pulling assembly 8, the No. 1 outer core pulling assembly 9, the No. 2 outer core pulling assembly 10, the No. 1 inner core pulling assembly 11, the No. 2 inner core pulling assembly 12, the tunnel slider 13, the drive rod mounting seat 14, the No. 1 drive rod 15, the inclined slide 16, the guide slider 17, the limit slider 18, the No. 1 outer core pulling seat 19, the No. 2 drive rod 20, the No. 2 outer core pulling seat 21, the No. 3 drive rod 22, the No. 1 inner core pulling seat 23, the No. 4 drive rod 24, the No. 2 inner core pulling seat 25, the No. 5 drive rod 26, the top mold 27, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A complex side core pulling mechanism for an injection mold of a car light distribution mirror, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: Two molding cavities are symmetrically arranged between the upper mold plate (1) and the lower mold plate (2); a combined insert structure (4) constituting the molding cavity is arranged on the lower mold plate (2); the combined insert structure (4) comprises a fixed insert (5), a movable insert (6) and a limit insert (7); a tunnel core pulling assembly (8) capable of driving the movable insert (6) to move obliquely away from the molding cavity is arranged on the lower mold plate (2); an outer core pulling assembly No. 1 (9) and an outer core pulling assembly No. 2 (10) respectively connected to the fixed insert (5) and the movable insert (6) are arranged on the outer side of the molding cavity; two inner core pulling assemblies No. 1 (11) connected to the fixed insert (5) and an inner core pulling assembly No. 2 (12) connected to the movable insert (6) are arranged on the inner side of the molding cavity.

2. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 1 is characterized in that: The tunnel-type core-pulling assembly (8) comprises a tunnel slider (13) slidably arranged in the lower template (2) and located below the fixed insert (5); the tunnel slider (13) is connected to the movable insert (6) via an oblique guide structure; an inclined limiting structure is also provided between the movable insert (6) and the limiting insert (7); a driving rod mounting seat (14) inserted into the lower template (2) is provided on the upper template (1); a driving rod (15) arranged obliquely is fixedly connected to the bottom of the driving rod mounting seat (14); the driving rod (15) is obliquely inserted into the tunnel slider (13).

3. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 2 is characterized in that: The oblique guide structure comprises an inclined slide groove (16) obliquely arranged at the inner end of the tunnel slider (13); a guide slider (17) protruding from the movable insert (6) and inserted into the inclined slide groove (16); and the cross-sections of the inclined slide groove (16) and the guide slider (17) are T-shaped.

4. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 3 is characterized in that: A limiting slider (18) with a T-shaped cross section is protruded from the inner end surface of the limiting insert (7), the limiting slider (18) and the guide slider (17) are perpendicular, and the limiting slider (18) is inserted into the moving insert (6) and is slidably connected to the moving insert (6).

5. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 1 is characterized in that: The No. 1 outer core pulling assembly (9) includes a No. 1 outer core pulling seat (19) arranged on the outside of the molding cavity, and the inner end of the No. 1 outer core pulling seat (19) is fixedly connected to a No. 1 outer core block connected to the fixed insert (5), and the upper mold plate (1) is also fixedly connected to a No. 2 driving rod (20) arranged obliquely, and the No. 2 driving rod (20) is inserted into the No. 1 outer core pulling seat (19).

6. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 5 is characterized in that: The No. 2 outer core pulling assembly (10) includes a No. 2 outer core pulling seat (21) arranged on the outside of the molding cavity, and the inner end of the No. 2 outer core pulling seat (21) is fixedly connected to the No. 2 outer core block connected to the movable insert (6), and the upper mold plate (1) is also fixedly connected to an inclined No. 3 driving rod (22), and the No. 3 driving rod (22) is inserted into the No. 2 outer core pulling seat (21).

7. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 6 is characterized in that: The No. 1 inner core pulling assembly (11) includes a No. 1 inner core pulling seat (23) arranged on the inner side of the molding cavity, the inner end of the No. 1 inner core pulling seat (23) is fixedly connected to a No. 1 inner core block connected to the fixed insert (5), and the upper mold plate (1) is also fixedly connected to a No. 4 driving rod (24) arranged obliquely, and the No. 4 driving rod (24) is inserted into the No. 1 inner core pulling seat (23).

8. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 7 is characterized in that: The No. 2 inner core pulling assembly (12) includes a No. 2 inner core pulling seat (25) arranged on the inner side of the molding cavity, the inner end of the No. 2 inner core pulling seat (25) is fixedly connected with a No. 2 inner core block connected to the movable insert (6), and the upper mold plate (1) is also fixedly connected with an inclined No. 5 driving rod (26), and the No. 5 driving rod (26) is inserted into the No. 2 inner core pulling seat (25).

9. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 1, characterized in that: The upper mold plate (1) is provided with a top mold (27) constituting a molding cavity, and the top mold (27) is detachably connected to the upper mold plate (1) via a plurality of screws.

10. The complex side core-pulling mechanism of the automobile headlight mirror injection mold according to claim 1, characterized in that: The fixed insert (5) and the limiting insert (7) are both detachably connected to the lower template (2) via a plurality of screws.

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