Inverted buckle inner-pulling demolding mechanism of automobile headlamp mask mold

Abstract

The utility model provides a reverse buckle inner-pulling demolding mechanism of an automobile headlamp mask mold, and belongs to the technical field of molds. The mold comprises a lower mold plate, two forming parts are symmetrically arranged on the lower mold plate, two obliquely-arranged forming cavities are symmetrically formed in each forming part, and two ejection mechanisms and a bottom glue feeding mechanism which are arranged corresponding to the two forming parts respectively are further arranged on the lower side of the lower mold plate. The bottom of the forming cavity is provided with a tunnel type back-off inner demolding assembly, and two partition plates are arranged between the two ejection mechanisms. The two forming parts each provided with the two forming cavities can be used for forming four mask products in an injection molding mode at a time, after the mask products are formed in an injection molding mode, the tunnel type inverted buckle inner disengaging assembly can enable inverted buckles on the products to be disengaged from the lower mold plate, and therefore the situation that the inverted buckle positions of the mask products are damaged when the mask products are ejected out can be prevented; the vertical guiding outward pushing type inner core pulling assembly can achieve automatic core pulling of a core block in the center of the lower die plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and relates to an internal core-pulling demolding mechanism for undercuts of an automobile headlamp mask mold. Background Technique

[0002] Automobile headlamp masks are generally injection-molded through molds. There are undercut structures on the automobile headlamp mask products. However, in the prior art, when the automobile headlamp mask is ejected, it is generally forced to eject through the elasticity of the mask itself. However, this ejection method often causes damage to the undercut position of the mask, and the production qualification rate of the product is low.

[0003] For example, a Chinese patent discloses an automobile headlamp mask mold with an inclined ejection mechanism [Application No.: 201821905452.4], which includes a bottom plate, a movable template, a fixed template, and an injection plate. The forming cavity is located between the movable template and the fixed template. The injection plate has an injection port, and the injection port is communicated with the forming cavity. It also includes an inclined ejection mechanism with one end pressed on the bottom plate and the other end extending to the bottom surface of the forming cavity. The ejection direction of the inclined ejection mechanism is not parallel to the mold opening direction. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above problems and provide an internal core-pulling demolding mechanism for undercuts of an automobile headlamp mask mold.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An internal core-pulling demolding mechanism for undercuts of an automobile headlamp mask mold includes a lower template. Two forming parts are symmetrically arranged on the lower template. Two inclined forming cavities are symmetrically arranged on each forming part. Two ejecting mechanisms and two bottom gating mechanisms corresponding to the two forming parts are further arranged on the lower side of the lower template. A tunnel-type undercut internal core-pulling component is arranged at the bottom of the forming cavity. Two partition plates are arranged between the two ejecting mechanisms. Two vertically-guided outward-pushing internal core-pulling components are arranged on the partition plates. The four vertically-guided outward-pushing internal core-pulling components on the two partition plates are respectively connected to the bottoms of the four forming cavities on the lower template.

[0007] In the above internal core-pulling demolding mechanism for undercuts of an automobile headlamp mask mold, the tunnel-type undercut internal core-pulling component includes a tunnel slider horizontally inserted into the lower template. The tunnel slider is slidably connected to the lower template, and a translation driving component connected to the tunnel slider is arranged on the lower template. The inner end of the tunnel slider is connected to the forming cavity, and the undercut part of the forming cavity is formed on the outer edge of the inner end face of the tunnel slider.

[0008] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the translation drive assembly includes a translation driver fixed on the lower template, and the end of the output shaft of the translation driver is connected to the outer end of the tunnel slider.

[0009] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the vertical guiding and outward-pushing internal core-pulling assembly includes an internal core-pulling slider slidably arranged in the middle of the lower template. The end of the internal core-pulling slider abuts against the outer edge of the inner end face of the tunnel slider. A core block outward-pushing assembly capable of driving the internal core-pulling slider to move away from the molding cavity is arranged on the partition plate.

[0010] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the core block outward-pushing assembly includes a lifting driver arranged inside the partition plate. The end of the output shaft of the lifting driver is fixedly connected with a push rod fixing block. The top of the push rod fixing block is fixedly connected with an inclined push rod. The push rod is inserted into the internal core-pulling slider and is in sliding fit with the internal core-pulling slider.

[0011] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the bottom of the push rod fixing block is recessed inward to form a connecting groove with a T-shaped cross section. The end of the output shaft of the lifting driver is fixedly connected with a T-shaped joint. The T-shaped joint and the connecting groove are in sliding fit.

[0012] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, limiting pressing plates are arranged on both sides of the push rod fixing block.

[0013] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the ejecting mechanism includes a top plate arranged on the lower side of the lower template. A plurality of straight ejecting rods are arranged on the top plate. A plurality of straight ejecting blocks are also arranged on the lower template. The straight ejecting blocks are connected to the top plate through ejecting rods.

[0014] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the ejecting mechanism further includes a plurality of lifting drivers capable of driving the top plate to lift and lower in the vertical direction.

[0015] In the above-mentioned undercut internal core-pulling and demolding mechanism of the automobile headlight mask mold, the bottom gating mechanism includes an injection plate arranged on the lower side of the lower template. The injection plate is arranged on the upper side of the top plate. A plurality of injection tubes connected to the molding cavity are arranged on the injection plate.

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

[0017] 1. The two molding parts each with two molding cavities can injection-mold four mask products at one time. After the mask products are injection-molded, the tunnel-type reverse buckle internal demolding assembly can separate the reverse buckles on the products from the lower template, thereby preventing damage to the reverse buckle positions of the mask products when they are ejected. The vertical guiding and outward-pushing internal core-pulling assembly can achieve automatic core-pulling of the core block at the center position of the lower template.

[0018] 2. The ejection mechanisms independently arranged on the lower side of each molding part can enable the mask products molded on each of the two molding parts to be demolded sequentially. The bottom gating mechanisms independently arranged on the lower side of each molding part can ensure the injection pressure.

[0019] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the lower template;

[0021] Figure 2 is a schematic structural diagram at the molding part;

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

[0023] Figure 4 is a schematic structural diagram of the tunnel-type reverse buckle internal demolding assembly.

[0024] In the figure, lower template 1, molding part 2, molding cavity 3, ejection mechanism 4, bottom gating mechanism 5, tunnel-type reverse buckle internal demolding assembly 6, partition plate 7, vertical guiding and outward-pushing internal core-pulling assembly 8, tunnel slider 9, translation drive 10, internal core-pulling slider 11, lifting drive 12, push rod fixing block 13, push rod 14, T-shaped joint 15, limit pressing plate 16, top plate 17, straight ejector rod 18, straight ejector block 19, lifting drive 20, injection plate 21, injection pipe 22. Detailed Embodiments

[0025] Such as Figures 1 - 4As shown in the figure, an undercut internal ejection and demolding mechanism for the front headlight mask mold of an automobile includes a lower template 1. Two forming parts 2 are symmetrically arranged on the lower template 1. Two inclined forming cavities 3 are symmetrically arranged on each forming part 2. Two ejecting mechanisms 4 and bottom gating mechanisms 5 corresponding to the two forming parts 2 are respectively arranged on the lower side of the lower template 1. A tunnel-type undercut internal demolding component 6 is arranged at the bottom of the forming cavity 3. Two partition plates 7 are arranged between the two ejecting mechanisms 4. Two vertically guided and externally pushed internal core-pulling components 8 are arranged on the partition plates 7. The four vertically guided and externally pushed internal core-pulling components 8 on the two partition plates 7 are respectively connected to the bottoms of the four forming cavities 3 on the lower template 1.

[0026] In the present utility model, the two forming parts 2 each provided with two forming cavities can injection mold four mask products at one time. After the mask products are injection molded, the tunnel-type undercut internal demolding component 6 can separate the undercuts on the products from the lower template, thereby preventing damage to the undercut positions of the mask products when the mask products are ejected. The vertically guided and externally pushed internal core-pulling component 8 can realize the automatic core-pulling of the core block at the center position of the lower template.

[0027] Secondly, the independent arrangement of the ejecting mechanism 4 under each forming part can enable the sequential demolding of the mask products formed on the two forming parts. The independent arrangement of the bottom gating mechanism 5 under each forming part can ensure the injection pressure.

[0028] Specifically, the tunnel-type undercut internal demolding component 6 includes a tunnel slider 9 horizontally inserted on the lower template 1. The tunnel slider 9 is slidably connected to the lower template 1, and a translation driving component connected to the tunnel slider 9 is arranged on the lower template 1. The inner end of the tunnel slider 9 is connected to the forming cavity 3, and the undercut part of the forming cavity 3 is formed at the outer edge of the inner end face of the tunnel slider 9. The translation driving component includes a translation driver 10 fixed on the lower template 1. The end of the output shaft of the translation driver 10 is connected to the outer end of the tunnel slider 9. After the product is injection molded, the translation driver 10 can drive the tunnel slider 9 to translate outwards, so that the inner end face of the tunnel slider 9 can be separated from the undercut part of the product, and damage to the undercut part will not occur when the product is ejected.

[0029] Those skilled in the art should understand that the translation driver can be an oil cylinder, a cylinder or a linear motor, etc.

[0030] Specifically, the vertical guiding and outward pushing inner core-pulling assembly 8 includes an inner core-pulling slider 11 slidably disposed in the middle of the lower template 1. The end of the inner core-pulling slider 11 abuts against the outer edge of the inner end surface of the tunnel slider 9. A core block outward pushing assembly capable of driving the inner core-pulling slider 11 to move away from the molding cavity 3 is provided on the partition plate 7. The core block outward pushing assembly includes a lifting driver 12 disposed inside the partition plate 7. The end of the output shaft of the lifting driver 12 is fixedly connected with a push rod fixing block 13. A tilted push rod 14 is fixedly connected to the top of the push rod fixing block 13. The push rod 14 is inserted into the inner core-pulling slider 11 and is slidably matched with the inner core-pulling slider 11. Before the product is ejected, the lifting driver 12 can drive the push rod fixing block 13 and the push rod to move vertically downward. The vertical downward movement of the push rod can drive the inner core-pulling slider to translate away from the molding cavity, so that the inner core-pulling slider can be disengaged from the product.

[0031] Those skilled in the art should understand that the lifting driver can be an oil cylinder, a cylinder or a linear motor, etc.

[0032] Preferably, a connection groove with a T-shaped cross-section is recessed inwardly at the bottom of the push rod fixing block 13. The end of the output shaft of the lifting driver 12 is fixedly connected with a T-shaped joint 15. The T-shaped joint 15 and the connection groove are slidably matched. The lifting driver 12 is connected to the push rod fixing block through the T-shaped joint and the connection groove on the push rod fixing block, which facilitates the assembly and disassembly of the push rod fixing block and the lifting driver.

[0033] Preferably, limiting pressing plates 16 are provided on both sides of the push rod fixing block 13, and the limiting pressing plates can limit the inner core-pulling slider.

[0034] Specifically, the ejection mechanism 4 includes a top plate 17 disposed on the lower side of the lower template 1. A plurality of straight ejector rods 18 are provided on the top plate 17. A plurality of straight ejector blocks 19 are further provided on the lower template 1. The straight ejector blocks 19 are connected to the top plate 17 through ejector rods. The ejection mechanism further includes a plurality of lifting drivers 20 capable of driving the top plate 17 to lift and lower in the vertical direction. The lifting driver can drive the top plate to lift and lower in the vertical direction. The upward movement of the top plate can apply a vertically upward thrust to the product through the straight ejector rods, ejector rods and straight ejector blocks, so as to eject the product from the lower template.

[0035] Those skilled in the art should understand that the lifting driver can be an oil cylinder, a cylinder or a linear motor, etc.

[0036] Specifically, the bottom gating mechanism 5 includes an injection plate 21 disposed on the lower side of the lower template 1. The injection plate 21 is disposed above the top plate 17. A plurality of injection tubes 22 connected to the molding cavity 3 are provided on the injection plate 21. Through the injection plate and the injection tubes, glue can be injected into the molding cavity from the bottom of the molding cavity, so that the gate formed by the injected glue is formed on the inner side of the mask product, so as to reduce the influence of the gate on the outer surface quality of the mask product.

[0037] The working principle of the present utility model is as follows: The two forming parts 2 each provided with two forming cavities can injection-mold four mask products at one time. After the mask products are injection-molded, the tunnel-type reverse buckle inner demolding assembly 6 can separate the reverse buckle on the product from the lower template, thereby preventing damage to the reverse buckle position of the mask product when the mask product is ejected. The vertically guided outward-pushing inner core-pulling assembly 8 can realize the automatic core-pulling of the core block at the center position of the lower template. The ejection mechanism 4 is independently arranged on the lower side of each forming part, which can enable the mask products formed on each of the two forming parts to be demolded sequentially. The bottom gating mechanism 5 is independently arranged on the lower side of each forming part, which can ensure the injection pressure;

[0038] After the product is injection-molded, the translation driver 10 can drive the tunnel slider 9 to translate outward, so that the inner end surface of the tunnel slider 9 can be separated from the reverse buckle part of the product, preventing damage to the reverse buckle part when the product is ejected. Before the product is ejected, the lifting driver 12 can drive the push rod fixing block 13 and the push rod to move vertically downward. The vertical downward movement of the push rod can drive the inner core-pulling slider to translate away from the forming cavity, so that the inner core-pulling slider can be separated from the product. The lifting driver 12 is connected to the push rod fixing block through a T-shaped joint and the connecting groove on the push rod fixing block, which is convenient for the assembly and disassembly of the push rod fixing block and the lifting driver;

[0039] The lifting driver can drive the top plate to lift and lower in the vertical direction. When the top plate moves upward, it can apply a vertically upward thrust to the product through the direct ejector rod, ejector rod and direct ejector block, so as to eject the product from the lower template. Through the injection plate and the injection pipe, glue can be fed into the forming cavity from the bottom of the forming cavity, so that the gate formed by the glue feeding is formed inside the mask product, reducing the influence of the gate on the outer surface quality of the mask product.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0041] Although terms such as lower template 1, forming part 2, forming cavity 3, ejection mechanism 4, bottom gating mechanism 5, tunnel-type reverse buckle inner demolding assembly 6, partition plate 7, vertically guided outward-pushing inner core-pulling assembly 8, tunnel slider 9, translation driver 10, inner core-pulling slider 11, lifting driver 12, push rod fixing block 13, push rod 14, T-shaped joint 15, limit pressing plate 16, top plate 17, direct ejector rod 18, direct ejector block 19, lifting driver 20, injection plate 21, injection pipe 22, etc. are used more in this article, using these terms is only for more convenient description and explanation of the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. An undercut inner-drawing demoulding mechanism for a car headlight mask mold, comprising a lower mold plate (1), characterized in that: The lower template (1) is symmetrically provided with two molding parts (2), and each molding part (2) is symmetrically provided with two inclined molding cavities (3). The lower side of the lower template (1) is also provided with two ejection mechanisms (4) and a bottom glue feeding mechanism (5) respectively corresponding to the two molding parts (2). The bottom of the molding cavity (3) is provided with a tunnel-type inverted inner stripping component (6). Two partition plates (7) are provided between the two ejection mechanisms (4). Two vertically guided outward-pushing inner core pulling components (8) are provided on the partition plate (7). The four vertically guided outward-pushing inner core pulling components (8) on the two partition plates (7) are respectively connected to the bottoms of the four molding cavities (3) on the lower template (1).

2. The undercut inner-pull demoulding mechanism of the automobile headlight mask mold according to claim 1 is characterized in that: The tunnel-type undercut inner stripping component (6) comprises a tunnel slider (9) horizontally inserted on the lower template (1); the tunnel slider (9) and the lower template (1) are slidably connected and a translation drive component connected to the tunnel slider (9) is provided on the lower template (1); the inner end of the tunnel slider (9) is connected to the molding cavity (3) and the undercut portion of the molding cavity (3) is formed on the outer edge of the inner end surface of the tunnel slider (9).

3. The undercut inner-pull demoulding mechanism of the automobile headlight mask mold according to claim 2 is characterized in that: The translation drive assembly comprises a translation drive (10) fixed on the lower template (1), and the output shaft end of the translation drive (10) is connected to the outer end of the tunnel slider (9).

4. The undercut inner-drawing demoulding mechanism of the automobile headlight mask mold according to claim 2 is characterized in that: The vertically guided outward-pushing inner core-pulling assembly (8) comprises an inner-pulling slider (11) slidably arranged in the middle of the lower mold plate (1), the end of the inner-pulling slider (11) abuts against the outer edge of the inner end surface of the tunnel slider (9), and the partition plate (7) is provided with a core block outward-pushing assembly capable of driving the inner-pulling slider (11) to move away from the molding cavity (3).

5. The undercut inner-pull demoulding mechanism of the automobile headlight cover mold according to claim 4 is characterized in that: The core block push-out assembly includes a lifting drive (12) arranged in the partition plate (7), the output shaft end of the lifting drive (12) is fixedly connected to a push rod fixing block (13), the top of the push rod fixing block (13) is fixedly connected to an inclined push rod (14), and the push rod (14) is inserted into the inner pull-out slider (11) and slidably cooperates with the inner pull-out slider (11).

6. The undercut inner-drawing demoulding mechanism of the automobile headlight mask mold according to claim 5 is characterized in that: The bottom of the push rod fixing block (13) is inwardly recessed and provided with a connecting groove with a T-shaped cross section. The end of the output shaft of the lifting driver (12) is fixedly connected with a T-shaped joint (15), and the T-shaped joint (15) and the connecting groove are slidably matched.

7. The undercut inner-drawing demoulding mechanism for the automobile headlight cover mold according to claim 6 is characterized in that: Limiting pressure plates (16) are arranged on both sides of the push rod fixing block (13).

8. The undercut inner-drawing demoulding mechanism for the automobile headlight cover mold according to claim 1 is characterized in that: The ejection mechanism (4) comprises a top plate (17) arranged at the lower side of the lower template (1), a plurality of straight ejector rods (18) are arranged on the top plate (17), and a plurality of straight ejector blocks (19) are also arranged on the lower template (1), and the straight ejector blocks (19) are connected to the top plate (17) via the ejector rods.

9. The undercut inner-drawing demoulding mechanism for the automobile headlight cover mold according to claim 8, characterized in that: The ejection mechanism also includes a plurality of lifting drivers (20) capable of driving the top plate (17) to rise and fall in a vertical direction.

10. The undercut inner-drawing demoulding mechanism for the automobile headlight mask mold according to claim 9, characterized in that: The bottom glue feeding mechanism (5) comprises an injection molding plate (21) arranged on the lower side of the lower mold plate (1), the injection molding plate (21) being arranged on the upper side of the top plate (17), and a plurality of injection molding tubes (22) connected to the molding cavity (3) being arranged on the injection molding plate (21).

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