Precise injection molding mold for automobile door panel horn meshes

Abstract

The utility model provides a precise injection molding mold for a loudspeaker mesh of an automobile door panel, and belongs to the technical field of molds. The device comprises an upper mold plate and a lower mold plate, a forming cavity with two closing parts is arranged between the upper mold plate and the lower mold plate, the closing parts can form through groove bodies in a door plate product formed in the forming cavity in an injection molding mode, and the lower mold plate is further provided with a loudspeaker mesh forming structure capable of forming loudspeaker meshes in the door plate product. The horn mesh forming structure can directly form a horn-shaped mesh structure on a door plate product during injection molding, and the inner and outer side synchronous glue feeding mechanism can inject injection molding liquid from the outside to the inside of a forming cavity and from the inside to the outside of a penetrating groove body at the same time, so that the flowing path of the injection molding liquid for filling the forming cavity can be reduced; not only can the time for filling the injection molding liquid be shortened, but also the injection molding liquid can be prevented from being cooled in advance, and the combined ejection mechanism can uniformly apply thrust to all parts of a door plate product to prevent the product from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a precision injection molding mold for a speaker mesh of an automobile door panel. Background Art

[0002] Automobile door panels are generally formed by injection molding. Due to the large volume of automobile panels, the molds in the prior art take a long time to inject. The injection liquid can easily solidify prematurely due to a drop in temperature during its flow in the molding cavity. The different or large differences in the solidification time of the injection liquid at different positions in the molding cavity can easily reduce the strength of the product.

[0003] For example, a Chinese patent discloses an injection mold for an automobile door panel trim [application number: 202020609267.1], comprising a device body, a top plate and a ejector plate, wherein the upper end of the device body is connected to a movable mold mechanism, and the front end of the movable mold mechanism is connected to a lifting assembly, the lower end of the top plate is connected to a film fixing mechanism, and the outer side of the film fixing mechanism is connected to an injection tube, the right end of the movable mold mechanism is connected to a cooling tube group, and the right end of the movable mold mechanism is connected to a heat flow tube group, and a travel switch is connected to the outer side of one end of the movable mold mechanism, one end of the travel switch is connected to a connecting rod, and the other end of the connecting rod is connected to a mounting seat, and a cylinder is provided in the mounting seat. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a precision injection molding die for a speaker mesh of a car door panel.

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

[0006] A precision injection molding mold for a speaker mesh of an automobile door panel, comprising an upper template and a lower template, a molding cavity with two closing parts is arranged between the upper template and the lower template, the closing part can form a through groove body on the door panel product injection molded in the molding cavity, the lower template is also provided with a speaker mesh molding structure capable of molding a speaker mesh on the door panel product, the upper side of the upper template is also provided with an inner and outer synchronous glue feeding mechanism, and the lower side of the lower template is provided with a combined ejection mechanism.

[0007] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the inner and outer synchronous glue feeding mechanism includes an injection liquid diverter plate, and the bottom of the injection liquid diverter plate is fixedly connected with four inner injection tubes respectively connected to the two closed parts and three outer injection tubes connected to the outside of the molding cavity.

[0008] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, three inner injection molding tubes are connected to the closed part away from the side of the outer injection molding tube, and one inner injection molding tube is connected to the closed part close to the side of the outer injection molding tube.

[0009] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the speaker mesh molding structure includes a speaker mesh molding block with a circular cross-section, and the speaker mesh molding block is detachably fixed to the lower mold plate by a plurality of screws.

[0010] In the above-mentioned automobile door panel speaker mesh precision injection molding die, the combined ejection mechanism includes a top plate and a door panel integral ejection assembly and a speaker mesh ejection assembly connected to the top plate.

[0011] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the speaker mesh ejection assembly includes three No. 1 inclined ejector blocks arranged along the circumference of the speaker mesh molding block and a number of fine ejector pins vertically penetrating the speaker mesh molding block, wherein the inner ends of two No. 1 inclined ejector blocks are against the speaker mesh molding block, and the bottoms of the several fine ejector pins are fixed on the connecting plate, the No. 1 inclined ejector block is connected to the ejector plate through a No. 1 inclined ejector rod and the top end of the No. 1 inclined ejector rod is inclined toward the center of the speaker mesh molding block.

[0012] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the door panel integral ejection component includes an inclined ejection component and a straight ejection component.

[0013] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the inclined top assembly includes a number of No. 2 inclined top blocks that are enclosed in a rectangular shape, and the No. 2 inclined top blocks are connected to the top plate through No. 2 inclined top rods.

[0014] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the second inclined top block is arranged at the edge of the molding cavity.

[0015] In the above-mentioned automobile door panel speaker mesh precision injection molding mold, the straight top assembly includes a plurality of straight top rods distributed in a rectangular array, and the bottom of the straight top rods is fixedly connected to the top plate.

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

[0017] 1. The trumpet mesh molding structure can directly form a trumpet-shaped mesh structure on the door panel product during injection molding. The inner and outer synchronous glue feeding mechanism can simultaneously inject the injection liquid from the outside of the molding cavity to the inside and from the inside to the outside through the groove body, thereby reducing the path required for the injection liquid to fill the molding cavity. It can not only reduce the time spent on filling the injection liquid, but also prevent the injection liquid from cooling down prematurely. The combined ejection mechanism can evenly apply thrust to various parts of the door panel product to prevent product damage.

[0018] 2. The four inner injection molding tubes can respectively inject the injection molding liquid into the molding cavity from the inside to the outside from the two closed parts, and the three outer injection molding tubes can inject the injection molding liquid into the molding cavity from the outside of the molding cavity.

[0019] 3. When the top plate moves upward, the door panel overall ejection assembly and the speaker mesh ejection assembly can respectively apply thrust to the door panel product as a whole and the speaker mesh position of the door panel product, thereby ejecting the product.

[0020] 4. When the top plate moves upward, it can apply an oblique upward thrust to the periphery of the trumpet-shaped mesh through the No. 1 inclined top rod and the No. 1 inclined top block, and can also apply a vertical upward thrust to the position of the trumpet-shaped mesh through the connecting plate and the fine top pin. The use of a fine top pin can prevent the trumpet-shaped mesh from being damaged.

[0021] 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

[0022] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0023] Figure 2 It is a partial structural schematic diagram of the utility model;

[0024] Figure 3 It is a structural diagram of the lower template;

[0025] Figure 4 It is a structural schematic diagram of a combined ejection mechanism.

[0026] In the figure, an upper template 1, a lower template 2, a closing part 3, a molding cavity 4, a speaker mesh molding structure 5, an inner and outer synchronous glue feeding mechanism 6, a combined ejection mechanism 7, an injection liquid diverter plate 8, an inner injection molding tube 9, an outer injection molding tube 10, a speaker mesh molding block 11, a top plate 12, an integral door panel ejection assembly 13, a speaker mesh ejection assembly 14, a No. 1 inclined ejector block 15, a thin ejector pin 16, a No. 1 inclined ejector rod 17, a connecting plate 18, a No. 2 inclined ejector block 19, a No. 2 inclined ejector rod 20, and a straight ejector rod 21. DETAILED DESCRIPTION

[0027] like Figure 1-Figure 4 As shown, a precision injection molding mold for a speaker mesh of an automobile door panel comprises an upper template 1 and a lower template 2, a molding cavity 4 with two closing parts 3 is arranged between the upper template 1 and the lower template 2, the closing part 3 can form a through groove body on the door panel product injection molded in the molding cavity 4, the lower template 2 is also provided with a speaker mesh molding structure 5 capable of molding a speaker mesh on the door panel product, the upper side of the upper template 1 is also provided with an inner and outer synchronous glue feeding mechanism 6, and the lower side of the lower template 2 is provided with a combined ejection mechanism 7.

[0028] In the utility model, the speaker mesh molding structure 5 can directly mold a speaker-shaped mesh structure on the door panel product during injection molding, and the inside and outside synchronous glue feeding mechanism 6 can simultaneously inject the injection liquid from the outside of the molding cavity to the inside and from the inside to the outside through the groove body, thereby reducing the path required for the injection liquid to flow to fill the molding cavity, which can not only reduce the time spent on filling the injection liquid, but also prevent the injection liquid from cooling down prematurely. The combined ejection mechanism 7 can evenly apply thrust to various parts of the door panel product to prevent product damage.

[0029] Specifically, the inner and outer synchronous glue feeding mechanism 6 includes an injection liquid diverter plate 8, and the bottom of the injection liquid diverter plate 8 is fixedly connected with four inner injection tubes 9 respectively connected to the two closed parts 3 and three outer injection tubes 10 connected to the outside of the molding cavity 4. The three inner injection tubes 9 are connected to the closed part 3 far away from the side of the outer injection tube 10, and one inner injection tube 9 is connected to the closed part 3 close to the side of the outer injection tube 10. The four inner injection tubes 9 can respectively inject the injection liquid into the molding cavity from the inside to the outside at the two closed parts, and the three outer injection tubes can inject the injection liquid into the injection liquid from the outside of the molding cavity.

[0030] Specifically, the speaker mesh forming structure 5 includes a speaker mesh forming block 11 with a circular cross section, and the speaker mesh forming block 11 is detachably fixed to the lower template 2 by a plurality of screws. The speaker mesh forming block 11 can directly form a speaker-shaped mesh structure on the door panel product during injection molding.

[0031] Specifically, the combined ejection mechanism 7 includes a top plate 12 and a door panel ejection assembly 13 and a speaker mesh ejection assembly 14 connected to the top plate 12. When the top plate moves upward, the door panel ejection assembly 13 and the speaker mesh ejection assembly 14 can respectively apply thrust to the door panel product as a whole and the speaker mesh position of the door panel product, thereby ejecting the product.

[0032] Specifically, the speaker mesh ejection assembly 14 includes three No. 1 inclined ejector blocks 15 arranged along the circumference of the speaker mesh forming block 11 and a number of fine ejector pins 16 vertically penetrating the speaker mesh forming block 11, wherein the inner ends of two No. 1 inclined ejector blocks 15 abut against the speaker mesh forming block 11, and the bottoms of the fine ejector pins 16 are fixed on the connecting plate 18, and the No. 1 inclined ejector block 15 is connected to the top plate 12 through the No. 1 inclined ejector rod 17, and the top end of the No. 1 inclined ejector rod 17 is inclined toward the center of the speaker mesh forming block 11. When the top plate moves upward, it can apply an oblique upward thrust to the periphery of the speaker mesh through the No. 1 inclined ejector rod 17 and the No. 1 inclined ejector block, and can also apply a vertical upward thrust to the position of the speaker mesh through the connecting plate 18 and the fine ejector pins, and the use of fine ejector pins can prevent the speaker mesh from being damaged.

[0033] Specifically, combined with Figure 4As shown, the door panel integral ejection assembly 13 includes an inclined ejection assembly and a straight ejection assembly, the inclined ejection assembly includes a plurality of No. 2 inclined ejection blocks 19 enclosing in a rectangular shape, the No. 2 inclined ejection blocks 19 are connected to the top plate 12 through the No. 2 inclined ejection rods 20, the No. 2 inclined ejection blocks 19 are arranged at the edge of the molding cavity 4, and the straight ejection assembly includes a plurality of straight ejection rods 21 distributed in a rectangular array, the bottom of the straight ejection rods 21 is fixedly connected to the top plate 12. When the top plate moves upward, it can apply an oblique upward thrust to the door panel product through the No. 2 inclined ejection rods 20 and the No. 2 inclined ejection blocks 19, and can also apply a vertical upward thrust to the product through the straight ejection rods.

[0034] The working principle of the utility model is as follows: the speaker mesh forming structure 5 can directly form a speaker mesh structure on the door panel product during injection molding, the inner and outer synchronous glue feeding mechanism 6 can simultaneously inject the injection liquid from the outside of the molding cavity to the inside and from the inside of the groove body to the outside, thereby reducing the path required for the injection liquid to fill the molding cavity, which can reduce the time spent on filling the injection liquid and prevent the injection liquid from cooling in advance, and the combined ejection mechanism 7 can evenly apply thrust to various parts of the door panel product to prevent product damage;

[0035] The four inner injection tubes 9 can respectively inject the injection liquid into the molding cavity from the inside to the outside from the two closed parts, and the three outer injection tubes can inject the injection liquid into the molding cavity from the outside of the molding cavity;

[0036] The speaker mesh forming block 11 can directly form a speaker-shaped mesh structure on the door panel product during injection molding. When the top plate moves upward, the door panel overall ejection component 13 and the speaker mesh portion ejection component 14 can respectively apply thrust to the door panel product as a whole and the speaker-shaped mesh position of the door panel product to eject the product. When the top plate moves upward, an oblique upward thrust can be applied to the periphery of the speaker-shaped mesh through the No. 1 inclined ejector rod 17 and the No. 1 inclined ejector block, and a vertical upward thrust can be applied to the speaker-shaped mesh position through the connecting plate 18 and the fine ejector pin. The use of a fine ejector pin can prevent the speaker-shaped mesh from being damaged. When the top plate moves upward, an oblique upward thrust can be applied to the door panel product through the No. 2 inclined ejector rod 20 and the No. 2 inclined ejector block 19, and a vertical upward thrust can be applied to the product through the straight ejector rod.

[0037] 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.

[0038] Although this article uses the upper template 1, the lower template 2, the closing part 3, the molding cavity 4, the speaker mesh molding structure 5, the inner and outer synchronous glue feeding mechanism 6, the combined ejection mechanism 7, the injection liquid diverter plate 8, the inner injection molding tube 9, the outer injection molding tube 10, the speaker mesh molding block 11, the top plate 12, the door panel integral ejection assembly 13, the speaker mesh ejection assembly 14, the No. 1 inclined ejector block 15, the thin ejector pin 16, the No. 1 inclined ejector rod 17, the connecting plate 18, the No. 2 inclined ejector block 19, the No. 2 inclined ejector rod 20, the straight ejector 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 precision injection molding mold for a car door panel speaker mesh, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: A molding cavity (4) having two closing parts (3) is provided between the upper mold plate (1) and the lower mold plate (2), and the closing part (3) can form a through groove on the door panel product injection-molded in the molding cavity (4). The lower mold plate (2) is also provided with a speaker mesh molding structure (5) capable of forming a speaker mesh on the door panel product. The upper side of the upper mold plate (1) is also provided with an inner and outer synchronous glue feeding mechanism (6), and the lower side of the lower mold plate (2) is provided with a combined ejection mechanism (7).

2. The automobile door panel speaker mesh precision injection molding mold according to claim 1 is characterized in that: The inner and outer synchronous glue feeding mechanism (6) comprises an injection liquid diverter plate (8), and the bottom of the injection liquid diverter plate (8) is fixedly connected with four inner injection tubes (9) respectively connected to the two closed parts (3) and three outer injection tubes (10) connected to the outer side of the molding cavity (4).

3. The automobile door panel speaker mesh precision injection molding mold according to claim 2 is characterized in that: Three inner injection tubes (9) are connected to the closed portion (3) on the side away from the outer injection tube (10), and one inner injection tube (9) is connected to the closed portion (3) on the side close to the outer injection tube (10).

4. The automobile door panel speaker mesh precision injection molding mold according to claim 1, characterized in that: The speaker mesh forming structure (5) comprises a speaker mesh forming block (11) with a circular cross section. The speaker mesh forming block (11) is detachably fixed to the lower template (2) by a plurality of screws.

5. The automobile door panel speaker mesh precision injection molding mold according to claim 4, characterized in that: The combined ejection mechanism (7) comprises a top plate (12), a door panel integral ejection assembly (13) and a speaker mesh ejection assembly (14) connected to the top plate (12).

6. The automobile door panel speaker mesh precision injection molding mold according to claim 5, characterized in that: The speaker mesh ejection assembly (14) comprises three No. 1 inclined ejection blocks (15) arranged along the circumference of the speaker mesh forming block (11) and a plurality of thin ejector pins (16) vertically penetrating the speaker mesh forming block (11), wherein the inner ends of two No. 1 inclined ejection blocks (15) abut against the speaker mesh forming block (11), the bottoms of the plurality of thin ejector pins (16) are fixed on the connecting plate (18), the No. 1 inclined ejection block (15) is connected to the ejection plate (12) via a No. 1 inclined ejector rod (17), and the top end of the No. 1 inclined ejector rod (17) is inclined toward the center of the speaker mesh forming block (11).

7. The automobile door panel speaker mesh precision injection molding mold according to claim 6, characterized in that: The door panel integral ejection assembly (13) comprises an inclined ejection assembly and a straight ejection assembly.

8. The automobile door panel speaker mesh precision injection molding mold according to claim 7, characterized in that: The inclined ejector assembly comprises a plurality of second inclined ejector blocks (19) which are enclosed in a rectangular shape. The second inclined ejector blocks (19) are connected to the ejector plate (12) via second inclined ejector rods (20).

9. The automobile door panel speaker mesh precision injection molding mold according to claim 8, characterized in that: The second inclined ejector block (19) is arranged at the edge of the molding cavity (4).

10. The automobile door panel speaker mesh precision injection molding mold according to claim 9, characterized in that: The straight top assembly comprises a plurality of straight top rods (21) distributed in a rectangular array, and the bottom of the straight top rods (21) is fixedly connected to the top plate (12).

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