Car lamp light guide strip injection mold with tooth pattern insert

Abstract

The utility model provides a car lamp light guide strip injection mold with a tooth pattern insert, and belongs to the technical field of molds. The mold comprises a lower mold plate and two upper inserts arranged on an upper mold plate, two forming cavities are formed between the two upper inserts and the lower mold plate, the forming cavities are in an arc shape, the two ends of each forming cavity face the same side, and the lower mold plate is provided with a side core-pulling assembly and a sliding block type bottom pouring assembly which are connected with the two ends of each forming cavity respectively. Two forming cavities formed by combining the two upper inserts and the lower mold plate can be used for forming two automobile lamp light guide strips in an injection molding mode at a time, and during injection molding, the injection molding plate can distribute injection molding liquid and inject glue into the two forming cavities through the two injection molding pipes at the same time. The sliding block type bottom pouring assembly connected with the injection molding pipe and the forming cavity can achieve glue feeding from the bottom of the forming cavity, so that the influence of a glue opening on the quality of the outer surface of the car lamp light guide strip is reduced, and during mold opening, the side core pulling assembly and the sliding block type bottom pouring assembly can automatically conduct core pulling.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an injection mold for a light guide strip of a vehicle lamp with a toothed pattern insert. Background Art

[0002] The light guide strips for vehicle lights are generally formed by injection molding. In the prior art, when the light guide strips for vehicle lights are injected, the injection mechanism in the mold directly injects glue from the outer surface and side of the light guide strips for vehicle lights, which affects the outer surface quality of the light guide strips for vehicle lights.

[0003] For example, a Chinese patent discloses an injection mold for a light guide strip [application number: 201720534865.5], which includes a fixed mold, a movable mold, a fixed plate, and a mold base connected in sequence, wherein the fixed mold is provided with a cavity, and the movable mold is provided with a core on the end face opposite to the fixed mold, and the core is buckled with the cavity to form a cavity, and the core includes a molding block slidably connected to the movable mold and a molding plate abutting against the molding block, and a molding groove for molding a connecting block is provided on the end face opposite to the molding block and the molding plate, and the molding block is inclined toward a side away from the center of the movable mold. Utility Model Content

[0004] The utility model aims to solve the above problems and provides an injection mold for a light guide strip of a vehicle lamp with a toothed pattern insert.

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

[0006] A vehicle light guide strip injection mold with toothed pattern inserts, comprising two upper inserts arranged on a lower mold plate and an upper mold plate, two molding cavities are formed between the two upper inserts and the lower mold plate, the molding cavities are arc-shaped and the two ends of the molding cavities face the same side, the lower mold plate is provided with a side core pulling assembly and a slider-type bottom pouring assembly respectively connected to the two ends of the molding cavity, and also includes a glue feeding mechanism, the glue feeding mechanism includes an injection molding plate, and an injection molding tube connected to the slider-type bottom pouring assembly is provided at each end of the injection molding plate.

[0007] In the above-mentioned injection mold for the light guide strip of a vehicle headlight with a toothed pattern insert, the slider-type bottom casting assembly includes a slider seat, the inner end of the slider seat is fixedly connected to a glue feed slider connected to the end of the molding cavity, and a bottom glue feed channel is provided at the bottom of the end of the glue feed slider connected to the molding cavity, and the glue inlet of the bottom glue feed channel is located at the bottom of the side wall of the glue feed slider close to the injection tube, and also includes a No. 1 drive rod obliquely fixed on the upper mold plate, and the No. 1 drive rod is inserted into the slider seat and slidably cooperates with the slider seat.

[0008] In the above-mentioned injection mold for the headlight light guide strip with toothed pattern inserts, the slider-type bottom inlet assembly also includes an external glue inlet channel arranged on the lower mold plate, the glue inlet end of the external glue inlet channel is connected to the injection tube, the glue outlet end of the external glue inlet channel is connected to the glue inlet port of the bottom glue inlet channel, and the height of the external glue inlet channel gradually decreases from the glue inlet end to the glue outlet end.

[0009] In the above-mentioned injection mold for the headlight light guide strip with toothed pattern inserts, the side core pulling assembly includes a core pulling seat, the inner end of the core pulling seat is fixedly connected to a side insert connected to the other end of the molding cavity, and also includes a No. 2 drive rod obliquely fixed on the upper mold plate, and the No. 2 drive rod is obliquely inserted into the core pulling seat and slidably cooperates with the core pulling seat.

[0010] In the above-mentioned injection mold for the headlight light guide strip with toothed pattern inserts, an outer insert block and two inner insert blocks are detachably fixed to the lower mold plate by a number of bolts. The two inner insert blocks are located inside the molding cavity and correspond to the two upper insert blocks.

[0011] In the above-mentioned injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert, a top plate is also provided on the lower side of the lower mold plate, and a combined ejection assembly and a residual material ejection assembly are arranged on the top plate.

[0012] In the above-mentioned injection mold for the headlight light guide strip with toothed pattern inlays, the excess material ejection assembly includes vertically arranged straight ejector rod No. 1, straight ejector rod No. 2 and straight ejector rod No. 3, the top end of the straight ejector rod No. 1 is connected to the bottom glue inlet channel, the straight ejector rod No. 2 is connected to the glue outlet end of the external glue inlet channel, and the straight ejector rod No. 3 is connected to the glue inlet end of the external glue inlet channel.

[0013] In the above-mentioned injection mold for the headlight light guide strip with toothed pattern inserts, the combined ejection assembly includes two inclined ejector blocks and two straight ejector blocks arranged on the periphery of the inner insert block, and the inclined ejector blocks and the straight ejector blocks are respectively connected to the top plate through an inclined ejector rod and a No. 4 straight ejector rod.

[0014] In the above-mentioned injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert, the two inclined top blocks and the two straight top blocks are arranged along the circumference of the molding cavity.

[0015] In the above-mentioned injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert, an arc-shaped toothed pattern belt is arranged on the top of the inner insert, and the toothed pattern belt extends from one end of the molding cavity to the other end.

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

[0017] 1. The two molding cavities formed by the combination of the two upper inserts and the lower template can be injection molded for two headlight light guide strips at one time. During injection molding, the injection plate can divert the injection liquid and inject glue into the two molding cavities through two injection molding tubes at the same time. The slider-type bottom inlet assembly connecting the injection molding tube and the molding cavity can realize the injection of glue from the bottom of the molding cavity, thereby reducing the influence of the glue port on the outer surface quality of the headlight light guide strip. In addition, when opening the mold, the side core pulling assembly and the slider-type bottom inlet assembly can also automatically pull the core.

[0018] 2. During injection molding, the injection tube can inject the injection liquid into the outer glue inlet runner. The injection liquid in the outer glue inlet runner can enter the bottom glue inlet runner through the glue inlet of the bottom glue inlet runner, and then be injected into the molding cavity through the glue outlet of the bottom glue inlet runner located at the bottom of the molding cavity. While the glue is being injected, the glue outlet is formed at the bottom of the light guide strip for the headlights, so as to reduce the influence of the glue outlet on the outer surface quality of the light guide strip for the headlights. When the mold is opened, the upward movement of the upper template can drive the No. 1 driving rod to move vertically upward. The vertical upward movement of the inclined No. 1 driving rod can drive the slider seat to move away from the molding cavity. The movement of the slider seat can drive the glue inlet slider to move away from the molding cavity, thereby realizing automatic core pulling.

[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 structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural diagram of the lower template;

[0022] Figure 3 It is a partial structural schematic diagram of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a combined ejection assembly and a residual material ejection assembly;

[0024] Figure 5 yes Figure 2 A magnified schematic diagram of center A.

[0025] In the figure, the lower template 1, the upper insert 2, the molding cavity 3, the side core pulling assembly 4, the slider type bottom pouring assembly 5, the injection plate 6, the injection tube 7, the slider seat 8, the glue feeding slider 9, the bottom glue feeding channel 10, the No. 1 driving rod 11, the external glue feeding channel 12, the core pulling seat 13, the side insert 14, the No. 2 driving rod 15, the external insert 16, the internal insert 17, the top plate 18, the combined ejection assembly 19, the residual material ejection assembly 20, the No. 1 straight ejector 21, the No. 2 straight ejector 22, the No. 3 straight ejector 23, the inclined ejector block 24, the straight ejector block 25, the inclined ejector 26, the No. 4 straight ejector 27, and the tooth pattern belt 28. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, an injection mold for a headlight light guide strip with a toothed pattern insert includes two upper inserts 2 arranged on a lower mold plate 1 and an upper mold plate, two molding cavities 3 are formed between the two upper inserts 2 and the lower mold plate 1, the molding cavities 3 are arc-shaped and the two ends of the molding cavities 3 face the same side, the lower mold plate 1 is provided with a side core pulling assembly 4 and a slider bottom pouring assembly 5 respectively connected to the two ends of the molding cavity 3, and also includes a glue feeding mechanism, the glue feeding mechanism includes an injection molding plate 6, and an injection molding tube 7 connected to the slider bottom pouring assembly 5 is provided at both ends of the injection molding plate 6.

[0027] In the utility model, two molding cavities formed by the combination of two upper inserts 2 and the lower template can be injection molded for two headlight light guide strips at one time. During injection molding, the injection molding plate can divert the injection liquid and simultaneously inject glue into the two molding cavities through two injection molding tubes. The slider-type bottom injection assembly 5 connecting the injection molding tube and the molding cavity can realize the injection of glue from the bottom of the molding cavity, thereby reducing the influence of the glue port on the outer surface quality of the headlight light guide strip. Moreover, when opening the mold, the side core pulling assembly 4 and the slider-type bottom injection assembly 5 can also automatically perform core pulling.

[0028] Specifically, the slider-type bottom casting assembly 5 includes a slider seat 8, the inner end of the slider seat 8 is fixedly connected to a glue feeding slider 9 connected to the end of the molding cavity 3, and the bottom of the glue feeding slider 9 connected to the molding cavity 3 is provided with a bottom glue feeding channel 10, and the glue feeding port of the bottom glue feeding channel 10 is located at the bottom of the side wall of the glue feeding slider 9 close to the injection tube 7, and also includes a No. 1 driving rod 11 obliquely fixed on the upper template, and the No. 1 driving rod 11 is inserted into the slider seat 8 and slidingly cooperates with the slider seat 8. The slider-type bottom casting assembly 5 also includes an external glue feeding channel 12 arranged on the lower template 1, and the glue feeding end of the external glue feeding channel 12 is connected to the injection tube 7, and the glue outlet end of the external glue feeding channel 12 is connected to the glue feeding port of the bottom glue feeding channel 10, and the height of the external glue feeding channel 12 gradually decreases from the glue feeding end to the glue outlet end. During injection molding, the injection tube can inject the injection liquid into the outer glue inlet runner, and the injection liquid in the outer glue inlet runner can enter the bottom glue inlet runner 10 through the glue inlet port of the bottom glue inlet runner 10, and then be injected into the molding cavity through the glue outlet of the bottom glue inlet runner 10 located at the bottom of the molding cavity. While the glue is being injected, the glue outlet is formed at the bottom of the light guide strip for the car lamp, so as to reduce the influence of the glue outlet on the outer surface quality of the light guide strip for the car lamp. When the mold is opened, the upward movement of the upper template can drive the No. 1 driving rod to move vertically upward, and the vertical upward movement of the inclined No. 1 driving rod can drive the slider seat to move away from the molding cavity, and the movement of the slider seat can drive the glue inlet slider to move away from the molding cavity, thereby realizing automatic core pulling.

[0029] Specifically, the side core pulling assembly 4 includes a core pulling seat 13, the inner end of which is fixedly connected to a side insert 14 connected to the other end of the molding cavity 3, and also includes a No. 2 driving rod 15 obliquely fixed on the upper mold plate, and the No. 2 driving rod 15 is obliquely inserted into the core pulling seat 13 and slidably cooperates with the core pulling seat 13. When the mold is opened, the upper mold plate moves upward to drive the No. 2 driving rod to move vertically upward, and the inclined No. 2 driving rod moves vertically upward to drive the core pulling seat to move away from the molding cavity, and the movement of the core pulling seat can drive the side insert to move away from the molding cavity, thereby realizing automatic core pulling.

[0030] Specifically, an outer insert block 16 and two inner insert blocks 17 are detachably fixed to the lower template 1 by a plurality of bolts, and the two inner insert blocks 17 are located inside the molding cavity 3 and correspond to the two upper insert blocks 2. The outer insert block 16 and the inner insert block 17 detachably connected to the lower template 1 can be easily disassembled and replaced, which can reduce the later maintenance cost.

[0031] Specifically, a top plate 18 is further provided on the lower side of the lower mold plate 1, and a combined ejection assembly 19 and a residual material ejection assembly 20 are provided on the top plate 18. The residual material ejection assembly 20 includes a No. 1 straight ejector rod 21, a No. 2 straight ejector rod 22 and a No. 3 straight ejector rod 23 which are vertically arranged. The top of the No. 1 straight ejector rod 21 is connected to the bottom glue feed channel 10, the No. 2 straight ejector rod 22 is connected to the glue outlet end of the external glue feed channel 12, and the No. 3 straight ejector rod 23 is connected to the glue feed end of the external glue feed channel 12. When moving, the first straight ejector rod 21, the second straight ejector rod 22 and the third straight ejector rod 23 can exert a vertical upward thrust on the residual material in the bottom glue feed channel and the outer glue feed channel, so that the residual material can be ejected; the combined ejection assembly 19 includes two inclined ejector blocks 24 and two straight ejector blocks 25 arranged on the periphery of the inner insert block 17, and the inclined ejector blocks 24 and the straight ejector blocks 25 are connected to the top plate 18 through the inclined ejector rod 26 and the fourth straight ejector rod 27, respectively. The two inclined ejector blocks 24 and the two straight ejector blocks 25 are arranged along the circumference of the molding cavity 3. When the top plate moves upward, the inclined ejector rod and the fourth straight ejector rod can respectively drive the inclined ejector block and the straight ejector block to move, and the movement of the inclined ejector block can exert an oblique upward thrust on the product, and the straight ejector block can thrust the product vertically upward, and the inclined ejector block and the straight ejector block can cooperate to eject the product from the lower template without damage.

[0032] Preferably, an arc-shaped tooth pattern belt 28 is provided on the top of the inner insert 17, and the tooth pattern belt 28 extends from one end to the other end of the molding cavity 3. The tooth pattern belt 28 on the inner insert can form a tooth pattern structure at the bottom of the product.

[0033] The working principle of the utility model is as follows: the two molding cavities formed by the combination of the two upper inserts 2 and the lower template can form two headlight light guide strips by injection molding at one time. During the injection molding, the injection molding plate can divert the injection liquid and simultaneously inject glue into the two molding cavities through the two injection molding tubes. The slider-type bottom injection assembly 5 connecting the injection molding tube and the molding cavity can realize the injection of glue from the bottom of the molding cavity, thereby reducing the influence of the glue port on the outer surface quality of the headlight light guide strip. In addition, when the mold is opened, the side core pulling assembly 4 and the slider-type bottom injection assembly 5 can also automatically perform core pulling.

[0034] During injection molding, the injection tube can inject the injection liquid into the outer glue inlet runner, and the injection liquid in the outer glue inlet runner can enter the bottom glue inlet runner 10 through the glue inlet port of the bottom glue inlet runner 10, and then be injected into the molding cavity through the glue outlet of the bottom glue inlet runner 10 located at the bottom of the molding cavity. While the glue is being injected, the glue outlet is formed at the bottom of the headlight light guide strip to reduce the influence of the glue outlet on the outer surface quality of the headlight light guide strip. When the mold is opened, the upward movement of the upper template can drive the No. 1 driving rod to move vertically upward, and the inclined No. 1 driving rod can move vertically upward. The movable slider seat moves away from the molding cavity, and the movement of the slider seat can drive the glue-feeding slider to move away from the molding cavity, thereby realizing automatic core pulling. When opening the mold, the upper template moves upward to drive the No. 2 driving rod to move vertically upward. The inclined No. 2 driving rod moves vertically upward to drive the core-pulling seat to move away from the molding cavity. The movement of the core-pulling seat can drive the side insert to move away from the molding cavity, thereby realizing automatic core pulling. The outer insert 16 and the inner insert 17 detachably connected to the lower template 1 can be easily disassembled and replaced, which can reduce the later maintenance cost;

[0035] When the top plate moves upward, the No. 1 straight push rod 21, the No. 2 straight push rod 22 and the No. 3 straight push rod 23 can apply a vertical upward thrust to the residual material in the bottom glue feed channel and the external glue feed channel, so that the residual material can be ejected. When the top plate moves upward, the inclined push rod and the No. 4 straight push rod can respectively drive the inclined push block and the straight push block to move. The movement of the inclined push block can apply an oblique upward thrust to the product, and the straight push block can apply a vertical upward thrust to the product. The inclined push block and the straight push block cooperate to eject the product from the lower template without damage, and the tooth pattern belt 28 on the inner insert block can form a tooth pattern structure at the bottom of the product.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0037] Although this article uses the lower template 1, upper insert 2, molding cavity 3, side core pulling assembly 4, slider type bottom pouring assembly 5, injection plate 6, injection tube 7, slider seat 8, glue feeding slider 9, bottom glue feeding channel 10, No. 1 driving rod 11, external glue feeding channel 12, core pulling seat 13, side insert 14, No. 2 driving rod 15, external insert 16, internal insert 17, ejector plate 18, combined ejector assembly 19, residual material ejector assembly 20, No. 1 straight ejector rod 21, No. 2 straight ejector rod 22, No. 3 straight ejector rod 23, inclined ejector block 24, straight ejector block 25, inclined ejector rod 26, No. 4 straight ejector rod 27, toothed pattern belt 28, 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. An injection mold for a light guide strip of a vehicle lamp with a toothed pattern insert, comprising two upper inserts (2) arranged on a lower mold plate (1) and an upper mold plate, characterized in that: Two molding cavities (3) are formed between the two upper inserts (2) and the lower mold plate (1). The molding cavities (3) are arc-shaped and the two ends of the molding cavities (3) face the same side. The lower mold plate (1) is provided with a side core pulling assembly (4) and a slider-type bottom pouring assembly (5) respectively connected to the two ends of the molding cavity (3). It also includes a glue feeding mechanism. The glue feeding mechanism includes an injection molding plate (6). The two ends of the injection molding plate (6) are provided with an injection molding tube (7) connected to the slider-type bottom pouring assembly (5).

2. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 1, characterized in that: The slider-type bottom casting assembly (5) comprises a slider seat (8), the inner end of the slider seat (8) is fixedly connected with a glue feeding slider (9) connected to the end of the molding cavity (3), the bottom of the glue feeding slider (9) connected to the molding cavity (3) is provided with a bottom glue feeding channel (10), the glue feeding port of the bottom glue feeding channel (10) is located at the bottom of the side wall of the glue feeding slider (9) close to the injection tube (7), and also comprises a No. 1 driving rod (11) obliquely fixed on the upper template, the No. 1 driving rod (11) is inserted into the slider seat (8) and slidably cooperates with the slider seat (8).

3. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 2, characterized in that: The slider-type bottom injection assembly (5) further comprises an external glue injection channel (12) arranged on the lower mold plate (1), the glue injection end of the external glue injection channel (12) is connected to the injection tube (7), the glue outlet end of the external glue injection channel (12) is connected to the glue inlet of the bottom glue injection channel (10), and the height of the external glue injection channel (12) gradually decreases from the glue injection end to the glue outlet end.

4. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 3, characterized in that: The side core pulling assembly (4) includes a core pulling seat (13), the inner end of the core pulling seat (13) is fixedly connected to a side insert (14) connected to the other end of the molding cavity (3), and also includes a No. 2 driving rod (15) obliquely fixed on the upper mold plate, and the No. 2 driving rod (15) is obliquely inserted into the core pulling seat (13) and slidably cooperates with the core pulling seat (13).

5. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 4, characterized in that: The lower mold plate (1) is detachably fixed with an outer insert block (16) and two inner insert blocks (17) by means of a plurality of bolts. The two inner insert blocks (17) are located inside the molding cavity (3) and correspond to the two upper insert blocks (2).

6. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 5, characterized in that: A top plate (18) is also provided on the lower side of the lower mold plate (1), and a combined ejection assembly (19) and a residual material ejection assembly (20) are provided on the top plate (18).

7. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 6, characterized in that: The residual material ejection assembly (20) comprises a first straight ejector rod (21), a second straight ejector rod (22) and a third straight ejector rod (23) which are vertically arranged, wherein the top end of the first straight ejector rod (21) is connected to the bottom glue feed channel (10), the second straight ejector rod (22) is connected to the glue outlet end of the external glue feed channel (12), and the third straight ejector rod (23) is connected to the glue feed end of the external glue feed channel (12).

8. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 6, characterized in that: The combined ejection assembly (19) comprises two inclined ejection blocks (24) and two straight ejection blocks (25) arranged on the periphery of the inner insert block (17); the inclined ejection blocks (24) and the straight ejection blocks (25) are connected to the ejection plate (18) via inclined ejection rods (26) and No. 4 straight ejection rods (27), respectively.

9. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 8, characterized in that: The two inclined top blocks (24) and the two straight top blocks (25) are arranged along the circumference of the molding cavity (3).

10. The injection mold for the light guide strip of a vehicle lamp with a toothed pattern insert according to claim 5, characterized in that: The top of the inner insert (17) is provided with an arc-shaped tooth pattern belt (28), and the tooth pattern belt (28) extends from one end of the molding cavity (3) to the other end.

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