Gas-assisted segmented demolding mechanism for light guide strip of headlamp of four-wheel electric vehicle

Abstract

The utility model provides a gas-assisted segmented demolding mechanism for a light guide strip of a headlamp of a four-wheel electric vehicle, and belongs to the technical field of molds. The die comprises an upper die plate and a lower die plate, and two forming cavities are symmetrically arranged between the upper die plate and the lower die plate. The light guide strip main body forming groove and the light guide strip back plate forming groove can be used for respectively forming a light guide strip main body and a light guide strip back plate in an injection molding manner during injection molding, and the plurality of positioning block forming structures can be used for forming a plurality of positioning blocks on the inner side of the light guide strip back plate; the outer side plate forming groove in the upper die plate can form an outer side plate used for installing a light guide strip on the outer side of the light guide strip back plate, the side connecting hole forming structure can form a side connecting hole used for installing the light guide strip in the outer side plate, and the middle connecting hole forming structure can form a middle connecting hole in the light guide strip back plate. Therefore, the light guide strip does not need to be processed later, and the production efficiency of the light guide strip can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a gas-assisted segmented demoulding mechanism for a light guide strip of a headlight of a four-wheel electric vehicle. Background Art

[0002] The light guide strips of the headlights of four-wheel electric vehicles are generally formed by injection molding. After the headlight light guide strips are injection molded by the mold, due to the installation requirements of the light guide strips, a light guide strip installation structure for installing the light guide strips needs to be processed on the back panel of the headlight light guide strips. This results in the production process of the light guide strips being very complicated and the production efficiency being slow.

[0003] For example, a Chinese patent discloses an injection mold for a light guide strip of a motor housing with shock absorption and noise reduction functions [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 and the cavity are buckled 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 the side away from the center of the movable mold. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a gas-assisted segmented demoulding mechanism for a light guide strip of a headlight of a four-wheel electric vehicle.

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

[0006] A gas-assisted segmented demoulding mechanism for a light guide strip of a headlight of a four-wheel electric vehicle comprises an upper template and a lower template, wherein two molding cavities are symmetrically arranged between the upper template and the lower template, wherein the molding cavity is formed by a combination of a light guide strip main body molding groove and a light guide strip back plate molding groove which are recessed inwardly on the lower template, a glue inlet flow channel structure which can simultaneously pour glue into the two molding cavities is arranged in the middle of the lower template, a plurality of positioning block molding structures connected to the inside of the light guide strip back plate molding groove are arranged on the lower template, an outer plate molding groove which is recessed inwardly and connected to the outer side of the light guide strip back plate molding groove is also arranged on the upper template, a plurality of side connection hole molding structures connected to the outer plate molding groove are also arranged on the upper template, and a middle connection hole molding structure connected to the light guide strip back plate molding groove is also arranged on the upper template.

[0007] In the above-mentioned gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, the positioning block molding structure includes a positioning block molding groove which is recessed inwardly and arranged on the lower template, and the positioning block molding groove is connected to the light guide strip back panel molding groove.

[0008] In the above-mentioned gas-assisted segmented demolding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, the side connection hole forming structure includes an outer positioning column forming groove which is recessed inwardly and arranged on the upper template, and a No. 1 side connection hole forming rod is protrudingly arranged at the center of the bottom surface of the outer positioning column forming groove, and the end of the No. 1 side connection hole forming rod is abutted against the bottom surface of the outer plate forming groove.

[0009] In the above-mentioned gas-assisted segmented demolding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, the side connection hole forming structure also includes an upper positioning groove forming rod protrudingly arranged on the upper template, and a No. 2 side connection hole forming rod is protrudingly arranged at the center of the end face of the upper positioning groove forming rod, and the end of the No. 2 side connection hole forming rod is abutted against the bottom surface of the outer plate forming groove.

[0010] In the above-mentioned gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, the lower template is also provided with a plurality of lower positioning groove forming rods corresponding to the upper positioning groove forming rods.

[0011] In the above-mentioned gas-assisted segmented demolding mechanism for the headlight light guide strip of the four-wheel electric vehicle, the intermediate connecting hole forming structure includes an inner positioning column forming groove which is recessed inwardly on the upper template, an inner connecting hole forming rod is protruding at the center of the bottom surface of the inner positioning column forming groove, and the end of the inner connecting hole forming rod is connected to the light guide strip back panel forming groove.

[0012] In the above-mentioned gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, the lower template is also provided with a gas-assisted segmented demoulding structure connected to the outer plate forming groove.

[0013] In the above-mentioned gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, the gas-assisted segmented demoulding structure includes a plurality of gas top flow channels arranged on the lower template and connected to the outer plate forming groove on the upper template.

[0014] In the above-mentioned gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of the four-wheel electric vehicle, a valve member is arranged at the top end of the gas cap flow channel.

[0015] In the above-mentioned gas-assisted segmented demolding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle, the glue inlet flow channel structure includes a cross-shaped flow channel which is recessed inwardly and arranged on the lower template, and the two ends of the cross-shaped flow channel are respectively connected to two molding cavities, and the lower template is also provided with four residual material ejection rods corresponding to the four branch troughs of the cross-shaped flow channel.

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

[0017] 1. The light guide strip main body molding groove and the light guide strip back plate molding groove can be respectively injection molded during injection molding. A plurality of positioning block molding structures can form a plurality of positioning blocks on the inner side of the light guide strip back plate. The outer plate molding groove on the upper template can form an outer plate for installing the light guide strip on the outer side of the light guide strip back plate. The side connecting hole molding structure can form a side connecting hole for installing the light guide strip on the outer plate. The middle connecting hole molding structure can form a middle connecting hole on the light guide strip back plate. Therefore, there is no need to process the light guide strip later, thereby improving the production efficiency of the light guide strip.

[0018] 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

[0019] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is a structural diagram of the lower template;

[0022] Figure 4 It is a structural diagram of the upper template.

[0023] In the figure, an upper template 1, a lower template 2, a molding cavity 3, a light guide strip main body molding groove 4, a light guide strip back plate molding groove 5, a glue inlet flow channel structure 6, a positioning block molding structure 7, an outer plate molding groove 8, a side connecting hole molding structure 9, an intermediate connecting hole molding structure 10, a positioning block molding groove 11, an outer positioning column molding groove 12, a No. 1 side connecting hole molding rod 13, an upper positioning groove molding rod 14, a No. 2 side connecting hole molding rod 15, a lower positioning groove molding rod 16, an inner positioning column molding groove 17, an inner connecting hole molding rod 18, an air top flow channel 19, a cross-shaped flow channel 20, and a residual material ejection rod 21. DETAILED DESCRIPTION

[0024] like Figure 1-Figure 4As shown, a gas-assisted segmented demoulding mechanism for a light guide strip of a headlight of a four-wheel electric vehicle comprises an upper template 1 and a lower template 2, two molding cavities 3 are symmetrically arranged between the upper template 1 and the lower template 2, the molding cavity 3 is formed by a light guide strip main body molding groove 4 and a light guide strip back plate molding groove 5 which are recessed inwardly and arranged on the lower template 2, a glue inlet flow channel structure 6 which can simultaneously pour into the two molding cavities 3 is arranged in the middle of the lower template 2, a plurality of positioning block molding structures 7 connected to the inside of the light guide strip back plate molding groove 5 are arranged on the lower template 2, an outer plate molding groove 8 connected to the outer side of the light guide strip back plate molding groove 5 is also recessed inwardly on the upper template 1, a plurality of side connecting hole molding structures 9 connected to the outer plate molding groove 8 are also arranged on the upper template 1, and a middle connecting hole molding structure 10 connected to the light guide strip back plate molding groove 5 is also arranged on the upper template 1.

[0025] In the utility model, the light guide strip main body molding groove 4 and the light guide strip back plate molding groove 5 can be respectively injection molded into the light guide strip main body and the light guide strip back plate during injection molding, a plurality of positioning block molding structures 7 can mold a plurality of positioning blocks on the inner side of the light guide strip back plate, the outer plate molding groove 8 on the upper template 1 can be molded into an outer plate for installing the light guide strip on the outer side of the light guide strip back plate, the side connecting hole molding structure 9 can be molded into a side connecting hole for installing the light guide strip on the outer plate, and the middle connecting hole molding structure 10 can be molded into a middle connecting hole on the light guide strip back plate, so there is no need to process the light guide strip later, thereby improving the production efficiency of the light guide strip.

[0026] Specifically, the positioning block forming structure 7 includes a positioning block forming groove 11 that is recessed inwardly and is arranged on the lower template 2, and the positioning block forming groove 11 is connected to the light guide strip back plate forming groove 5. The positioning block forming groove 11 on the lower template 2 can form a positioning block on the inner side of the light guide strip back plate to facilitate positioning when the light guide strip is installed.

[0027] Specifically, the side connection hole forming structure 9 includes an outer positioning column forming groove 12 that is recessed inwardly and is arranged on the upper template 1. A No. 1 side connection hole forming rod 13 is protrudingly arranged at the center of the bottom surface of the outer positioning column forming groove 12. The end of the No. 1 side connection hole forming rod 13 abuts against the bottom surface of the outer side plate forming groove 8. The outer positioning column forming groove 12 can form an outer positioning rod protruding outward on the back of the outer side plate, and the No. 1 side connection hole forming rod 13 can form a No. 1 side connection hole that is set through on the outer positioning rod. The outer positioning rod can be positioned when the light guide strip is installed. The No. 1 side connection hole can be used to install and fix the outer side plate with bolts without the need for post-processing.

[0028] Specifically, the side connection hole forming structure 9 also includes an upper positioning groove forming rod 14 protruding from the upper template 1, and a No. 2 side connection hole forming rod 15 protruding from the center of the end surface of the upper positioning groove forming rod 14, and the end of the No. 2 side connection hole forming rod 15 abuts against the bottom surface of the outer plate forming groove 8. The upper positioning groove forming rod 14 can form an inwardly recessed upper positioning groove on the back of the outer plate, and the No. 2 side connection hole forming rod can form a No. 2 side connection hole that is set through the upper positioning groove. The upper positioning groove can be positioned when the light guide strip is installed, and the No. 2 side connection hole can be used for the installation and fixation of the outer plate with bolts without the need for post-processing.

[0029] Specifically, the lower template 2 is also provided with a plurality of lower positioning groove forming rods 16 corresponding to the upper positioning groove forming rods 14. The lower positioning groove forming rods 16 can form lower positioning grooves corresponding to the upper positioning grooves on the front side of the outer plate, and the lower positioning grooves can be positioned when the light guide strip is installed.

[0030] Specifically, the intermediate connection hole forming structure 10 includes an inner positioning column forming groove 17 that is recessed inwardly and is arranged on the upper template 1. An inner connection hole forming rod 18 is protrudingly arranged at the center of the bottom surface of the inner positioning column forming groove 17. The end of the inner connection hole forming rod 18 is connected to the light guide strip back plate forming groove 5. The inner positioning column forming groove 17 can form an inner positioning column protruding outward on the back of the light guide strip back plate, and the inner connection hole forming rod 18 can form an inner connection hole that is penetrated at the inner positioning column. The inner connection hole can be used for the installation and fixation of the light guide strip back plate with bolts without the need for post-processing.

[0031] Preferably, the lower template 2 is also provided with a gas-assisted segmented demoulding structure connected to the outer plate forming groove 8. The gas-assisted segmented demoulding structure can introduce high-pressure gas to the outer plate segment by segment before the product is ejected, so that the outer plate and the lower template can be separated segment by segment, thereby preventing the outer plate from being damaged during ejection.

[0032] Specifically, the gas-assisted segmented demoulding structure includes a plurality of gas top runners 19 arranged on the lower template 2 and connected to the outer plate forming groove 8 on the upper template 1. High-pressure gas can be introduced into the outer plate through the gas top runners 19, and segmented demoulding of the outer plate can be achieved by introducing high-pressure gas into the plurality of gas top runners one by one. A valve member is arranged at the top of the gas top runner 19. The valve member can close the gas top runner during injection molding.

[0033] Specifically, the injection flow channel structure 6 includes a cross-shaped flow channel 20 which is recessed inwardly and is arranged on the lower mold plate 2. The two ends of the cross-shaped flow channel 20 are respectively connected to the two molding cavities 3. The lower mold plate 2 is also provided with four residual material ejection rods 21 which correspond to the four branch grooves of the cross-shaped flow channel 20. After the injection molding liquid is injected into the cross-shaped flow channel, the injection molding liquid can be injected into the two molding cavities at the same time through the cross-shaped flow channel. The injection flow channel structure 6 is arranged in a cross shape so that two more residual material ejection rods can be arranged, so that the residual material can be ejected more completely when the residual material is ejected to prevent residual material from remaining.

[0034] The working principle of the utility model is as follows: the light guide strip body molding groove 4 and the light guide strip back plate molding groove 5 can respectively mold the light guide strip body and the light guide strip back plate during injection molding, a plurality of positioning block molding structures 7 can mold a plurality of positioning blocks on the inner side of the light guide strip back plate, the outer plate molding groove 8 on the upper template 1 can mold an outer plate for installing the light guide strip on the outer side of the light guide strip back plate, the side connection hole molding structure 9 can mold a side connection hole for installing the light guide strip on the outer plate, and the middle connection hole molding structure 10 can mold a middle connection hole on the light guide strip back plate, so there is no need to process the light guide strip later, thereby improving the production efficiency of the light guide strip;

[0035] The positioning block forming groove 11 on the lower template 2 can form a positioning block on the inner side of the back plate of the light guide strip to facilitate positioning when the light guide strip is installed. The outer positioning column forming groove 12 can form an outer positioning rod protruding outward on the back of the outer plate. The No. 1 side connecting hole forming rod 13 can form a No. 1 side connecting hole that is set through on the outer positioning rod. The outer positioning rod can be positioned when the light guide strip is installed. The No. 1 side connecting hole can be used for the installation and fixation of the outer plate with bolts without the need for post-processing. The upper positioning groove forming rod 14 can form an upper positioning groove that is recessed inward on the back of the outer plate. The No. 2 side connecting hole forming rod can be at the upper positioning groove A second side connection hole is formed to be set through, and the upper positioning groove can be used for positioning when the light guide strip is installed. The second side connection hole can be used for the installation and fixation of the outer plate with the bolt, without the need for post-processing. The lower positioning groove forming rod 16 can form a lower positioning groove corresponding to the upper positioning groove on the front side of the outer plate, and the lower positioning groove can be used for positioning when the light guide strip is installed. The inner positioning column forming groove 17 can form an inner positioning column protruding outward on the back side of the light guide strip back plate, and the inner connection hole forming rod 18 can form an inner connection hole set through at the inner positioning column, and the inner connection hole can be used for the installation and fixation of the light guide strip back plate with the bolt, without the need for post-processing.

[0036] The gas-assisted segmented demoulding structure can introduce high-pressure gas into the outer plate in segments before the product is ejected, so that the outer plate and the lower template can be separated in segments, thereby preventing the outer plate from being damaged during ejection. High-pressure gas can be introduced into the outer plate through the gas top flow channel 19. Segmented demoulding of the outer plate can be achieved by introducing high-pressure gas into several gas top flow channels one by one. The valve component can close the gas top flow channel during injection molding. After the injection liquid is injected into the cross-shaped flow channel, the injection liquid can be injected into two molding cavities at the same time through the cross-shaped flow channel. The glue feed flow channel structure 6 is set to a cross shape, and two more residual material ejection rods can be set, so that the residual material can be ejected more completely when ejecting the residual material, so as to prevent residual material from remaining.

[0037] 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.

[0038] Although this article uses the upper template 1, lower template 2, molding cavity 3, light guide strip main body molding groove 4, light guide strip back panel molding groove 5, glue inlet flow channel structure 6, positioning block molding structure 7, outer plate molding groove 8, side connecting hole molding structure 9, middle connecting hole molding structure 10, positioning block molding groove 11, outer positioning column molding groove 12, No. 1 side connecting hole molding rod 13, upper positioning groove molding rod 14, No. 2 side connecting hole molding rod 15, lower positioning groove molding rod 16, inner positioning column molding groove 17, inner connecting hole molding rod 18, air top flow channel 19, cross-shaped flow channel 20, residual material ejection rod 21, 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 gas-assisted segmented demoulding mechanism for a light guide strip of a headlight of a four-wheel electric vehicle, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: Two molding cavities (3) are symmetrically arranged between the upper template (1) and the lower template (2). The molding cavity (3) is formed by a combination of a light guide strip main body molding groove (4) and a light guide strip back plate molding groove (5) which are recessed inwardly on the lower template (2). A glue inlet flow channel structure (6) capable of simultaneously pouring into the two molding cavities (3) is arranged in the middle of the lower template (2). A plurality of positioning block molding structures (7) connected to the inside of the light guide strip back plate molding groove (5) are arranged on the lower template (2). An outer plate molding groove (8) connected to the outer side of the light guide strip back plate molding groove (5) is also recessed inwardly on the upper template (1). A plurality of side connection hole molding structures (9) connected to the outer plate molding groove (8) are also arranged on the upper template (1). An intermediate connection hole molding structure (10) connected to the light guide strip back plate molding groove (5) is also arranged on the upper template (1).

2. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 1, characterized in that: The positioning block forming structure (7) comprises a positioning block forming groove (11) which is recessed inwardly and arranged on the lower template (2); the positioning block forming groove (11) is connected to the light guide strip back plate forming groove (5).

3. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 1, characterized in that: The side connection hole forming structure (9) comprises an outer positioning column forming groove (12) which is recessed inwardly and arranged on the upper template (1); a No. 1 side connection hole forming rod (13) is protrudingly arranged at the center of the bottom surface of the outer positioning column forming groove (12); and the end of the No. 1 side connection hole forming rod (13) is abutted against the bottom surface of the outer plate forming groove (8).

4. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 3 is characterized in that: The side connection hole forming structure (9) further comprises an upper positioning groove forming rod (14) protruding from the upper template (1), a second side connection hole forming rod (15) protruding from the center of the end face of the upper positioning groove forming rod (14), and an end of the second side connection hole forming rod (15) abuts against the bottom surface of the outer plate forming groove (8).

5. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 4, characterized in that: The lower template (2) is also provided with a plurality of lower positioning groove forming rods (16) corresponding to the upper positioning groove forming rods (14).

6. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 1, characterized in that: The intermediate connection hole forming structure (10) comprises an inner positioning column forming groove (17) which is recessed inwardly and arranged on the upper template (1); an inner connection hole forming rod (18) is protrudingly arranged at the center of the bottom surface of the inner positioning column forming groove (17); and the end of the inner connection hole forming rod (18) is connected to the light guide strip back panel forming groove (5).

7. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 1, characterized in that: The lower mold plate (2) is also provided with a gas-assisted segmented demoulding structure connected to the outer plate forming groove (8).

8. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 7, characterized in that: The gas-assisted segmented demoulding structure comprises a plurality of gas top flow channels (19) arranged on the lower mold plate (2) and connected to the outer plate forming grooves (8) on the upper mold plate (1).

9. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 8, characterized in that: The top end of the gas cap flow channel (19) is provided with a valve member.

10. The gas-assisted segmented demoulding mechanism for the light guide strip of the headlight of a four-wheel electric vehicle according to claim 1, characterized in that: The glue inlet channel structure (6) comprises a cross-shaped channel (20) which is recessed inwardly and arranged on the lower mold plate (2). The two ends of the cross-shaped channel (20) are respectively connected to two molding cavities (3). The lower mold plate (2) is also provided with four residual material ejection rods (21) which respectively correspond to the four branch troughs of the cross-shaped channel (20).

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