Internal-drawing auxiliary demolding mechanism of automobile rearview mirror shell injection mold

Abstract

The utility model provides an internal-drawing auxiliary demolding mechanism of an injection mold of an automobile rearview mirror shell, and belongs to the technical field of molds. The mold comprises a lower mold plate, two forming cavities are symmetrically formed in the lower mold plate, a front ejection assembly and a rear ejection assembly which are connected with the forming cavities are arranged on the lower mold plate, and an inner pulling sliding block connected with the rear ejection assembly is further arranged on the lower mold plate. The connecting face of the inner pulling sliding block and the rear ejection assembly is an inclined face, a protruding block inserted into the forming cavity is arranged on the inclined face of the inner pulling sliding block in a protruding mode, and an inner pulling auxiliary demolding assembly connected with the inner pulling sliding block is further arranged on the lower mold plate. After the product is subjected to injection molding, pushing force can be applied to the product through the front ejection assembly and the rear ejection assembly, the inner-pulling auxiliary demolding assembly can drive the inner-pulling sliding block to obliquely move downwards when the product is ejected out, so that a convex block, inserted into the molding cavity, on the inner-pulling sliding block can be separated from the product, and the product is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an inner-drawing auxiliary demoulding mechanism of an injection mold for a car rearview mirror shell. Background Art

[0002] The automobile rearview mirror shell is generally formed by injection molding. After the automobile rearview mirror shell is injection molded, it is necessary to first perform core pulling when ejecting. However, the core pulling slider of the automobile rearview mirror shell mold is provided with a shell slot forming block that is obliquely inserted into the molding cavity. In the prior art, the shell slot forming block is generally forcibly extruded from the molding cavity when the slider is core pulling. However, the forced extrusion of the slider sometimes causes damage to the automobile rearview mirror shell.

[0003] For example, a Chinese patent discloses an injection molding mold for the rear shell of a car rearview mirror [application number: 202221161659.1], which includes a core pulling block and a core pulling rod. The core pulling block is provided with a mounting groove, and the end of the mounting groove is provided with an opening. The end of the core pulling rod is slidably connected in the mounting groove, and the end of the core pulling rod can slide out from the opening; it also includes a mounting bolt, the length direction of the mounting bolt is parallel to the sliding direction of the end of the core pulling rod, the mounting bolt passes through the core pulling rod, and the end of the mounting bolt is threadedly connected to the groove wall of the mounting groove. Utility Model Content

[0004] The utility model aims to solve the above problems and provides an inner-drawing auxiliary demoulding mechanism for an injection mold of a rearview mirror housing of an automobile.

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

[0006] An inner-drawing auxiliary demoulding mechanism of an injection mold for a car rearview mirror housing comprises a lower template, wherein two molding cavities are symmetrically arranged on the lower template, a front ejection assembly and a rear ejection assembly connected to the molding cavities are arranged on the lower template, an inner-drawing slider connected to the rear ejection assembly is also arranged on the lower template, the connecting surface between the inner-drawing slider and the rear ejection assembly is an inclined surface, and a convex block inserted into the molding cavity is protruded on the inclined surface of the inner-drawing slider, and the lower template is also provided with an inner-drawing auxiliary demoulding assembly connected to the inner-drawing slider.

[0007] In the above-mentioned inner-pull auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, the inner-pull auxiliary demoulding component includes a core-pulling slider slidably matched with the lower mold plate, and the core-pulling slider is connected to the inner-pull slider through an oblique guide structure.

[0008] In the above-mentioned inner-pull auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, the oblique guide structure includes a push-pull slide groove obliquely arranged on the core-pulling slider, and the inner-pull slider is protrudingly provided with a push-pull slider inserted into the push-pull slide groove.

[0009] In the above-mentioned inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing, the cross-sections of the push-pull slide groove and the push-pull slider are T-shaped.

[0010] In the above-mentioned inner-drawing auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, a top plate is further provided on the lower side of the lower mold plate, and the front ejection assembly and the rear ejection assembly are both connected to the top plate.

[0011] In the above-mentioned internal extraction auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, the front ejection assembly includes three No. 1 inclined ejector blocks arranged outside the molding cavity, and the bottom of the No. 1 inclined ejector block is hinged to the ejector plate through a No. 1 inclined ejector rod.

[0012] In the above-mentioned inner-drawing auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, the front ejection assembly also includes a straight ejector block arranged in the middle of the molding cavity, and the bottom of the straight ejector block is fixedly connected to the ejector plate through a straight ejector rod.

[0013] In the above-mentioned internal extraction auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, the No. 1 inclined ejector block and the No. 1 inclined ejector rod are integrally arranged, and the straight ejector block and the straight ejector rod are integrally arranged.

[0014] In the above-mentioned internal pull-out auxiliary demoulding mechanism of the automobile rearview mirror housing injection mold, the rear ejection assembly includes two No. 2 inclined ejector blocks, the No. 2 inclined ejector blocks are hinged through No. 2 inclined ejector rods and the ejector plate, and the No. 2 inclined ejector blocks are connected to the internal pull-out slider and the connection is inclined.

[0015] In the above-mentioned inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing, the No. 2 inclined ejector block and the No. 2 inclined ejector rod are integrally arranged.

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

[0017] 1. After the product is injection molded, the front ejector assembly and the rear ejector assembly can apply thrust to the product. The inner pull-out auxiliary demoulding assembly can drive the inner pull-out slider to move obliquely downward when the product is ejected, so that the protrusion on the inner pull-out slider inserted into the molding cavity can be detached from the product to prevent the product from being damaged.

[0018] 2. When the core-pulling slider moves horizontally, it can drive the inner pull-out slider to move obliquely upward or downward through the push-pull slide groove and the push-pull slider. After the product is injection molded, the core-pulling slider moves horizontally outward and can drive the inner pull-out slider to move obliquely downward through the push-pull slide groove and the push-pull slider, so that the bump on the inner pull-out slider can be separated from the product.

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

[0020] Figure 1 It is a schematic diagram of the overall structure 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 schematic diagram of the structure of the front ejector assembly and the rear ejector assembly.

[0024] In the figure, the lower template 1, the molding cavity 3, the front ejection assembly 4, the rear ejection assembly 5, the inner pull-out slider 6, the protrusion 7, the core-pulling slider 8, the push-pull slide 9, the push-pull slider 10, the top plate 11, the No. 1 inclined ejector block 12, the No. 1 inclined ejector rod 13, the straight ejector block 14, the straight ejector rod 15, the No. 2 inclined ejector block 16, and the No. 2 inclined ejector rod 17. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 4 As shown, an inner-drawing auxiliary demoulding mechanism of an injection mold for a rearview mirror housing of an automobile comprises a lower template 1, on which two molding cavities 3 are symmetrically arranged, on which a front ejection assembly 4 and a rear ejection assembly 5 connected to the molding cavities 3 are arranged, and on which an inner-drawing slider 6 connected to the rear ejection assembly 5 is also arranged on the lower template 1, and the connecting surface between the inner-drawing slider 6 and the rear ejection assembly 5 is an inclined surface, and a protrusion 7 inserted into the molding cavity 3 is protruding on the inclined surface of the inner-drawing slider 6, and the lower template 1 is also provided with an inner-drawing auxiliary demoulding assembly connected to the inner-drawing slider 6.

[0026] In the utility model, after the product is injection molded, a thrust can be applied to the product through the front ejection assembly 4 and the rear ejection assembly 5, and the inner pull-out auxiliary demoulding assembly can drive the inner pull-out slider 6 to move obliquely downward when the product is ejected, so that the protrusion on the inner pull-out slider inserted into the molding cavity can be detached from the product to prevent the product from being damaged.

[0027] Specifically, combined with Figure 1-Figure 4As shown, the inner-pull auxiliary demoulding assembly includes a core-pulling slider 8 that is slidably matched with the lower mold plate 1. The core-pulling slider 8 is connected to the inner-pulling slider 6 through an oblique guide structure. The oblique guide structure includes a push-pull slide groove 9 obliquely arranged on the core-pulling slider 8. The inner-pulling slider 6 is protrudingly provided with a push-pull slider 10 inserted into the push-pull slide groove 9. The push-pull slide groove 9 and the push-pull slide groove 10 have a T-shaped cross section. When the core-pulling slider 8 moves horizontally, it can drive the inner-pulling slider to move obliquely upward or downward through the push-pull slide groove 9 and the push-pull slide groove 10. After the product is injection molded, the core-pulling slider 8 moves horizontally outward and can drive the inner-pulling slider to move obliquely downward through the push-pull slide groove 9 and the push-pull slide groove 10, so that the protrusion on the inner-pulling slider 6 can be separated from the product.

[0028] Specifically, a top plate 11 is further provided on the lower side of the lower mold plate 1, and the front ejection assembly 4 and the rear ejection assembly 5 are both connected to the top plate 11. When the top plate moves upward, it can drive the front ejection assembly 4 and the rear ejection assembly 5 to move, thereby applying an upward thrust to the product.

[0029] Specifically, the front ejector assembly 4 includes three No. 1 inclined ejector blocks 12 arranged outside the molding cavity 3, the bottom of the No. 1 inclined ejector block 12 is hinged to the top plate 11 through the No. 1 inclined ejector rod 13, and the front ejector assembly 4 also includes a straight ejector block 14 arranged in the middle of the molding cavity 3, and the bottom of the straight ejector block 14 is fixedly connected to the top plate 11 through the straight ejector rod 15. When the top plate moves upward, the No. 1 inclined ejector block and the straight ejector block can be driven to move synchronously through the No. 1 inclined ejector rod and the straight ejector rod to apply an upward thrust to the product.

[0030] Preferably, the No. 1 inclined ejector block 12 and the No. 1 inclined ejector rod 13 are integrally arranged, and the straight ejector block 14 and the straight ejector rod 15 are integrally arranged, which can facilitate the production and processing of parts.

[0031] Specifically, the rear ejector assembly 5 includes two No. 2 inclined ejector blocks 16, which are hinged to the top plate 11 through the No. 2 inclined ejector rods 17, and the No. 2 inclined ejector blocks 16 are connected to the inner slide block 6 and the connection is inclined. When the top plate moves upward, the No. 2 inclined ejector rods 17 can drive the No. 2 inclined ejector blocks to move upward to apply thrust to the product.

[0032] Preferably, the second lift block 16 and the second lift rod 17 are integrally arranged to facilitate the production and processing of parts.

[0033] The working principle of the utility model is as follows: after the product is injection molded, the front ejection assembly 4 and the rear ejection assembly 5 can apply thrust to the product, and the inner-drawing auxiliary demoulding assembly can drive the inner-drawing slider 6 to move obliquely downward when the product is ejected, so that the convex block on the inner-drawing slider inserted into the molding cavity can be separated from the product to prevent the product from being damaged;

[0034] When the core-pulling slider 8 moves horizontally, it can drive the inner pull-out slider to move obliquely upward or downward through the push-pull slide groove 9 and the push-pull slider 10. After the product is injection molded, the core-pulling slider 8 moves horizontally outward and can drive the inner pull-out slider to move obliquely downward through the push-pull slide groove 9 and the push-pull slider 10, so that the protrusion on the inner pull-out slider 6 can be separated from the product. When the top plate moves upward, it can drive the front ejection component 4 and the rear ejection component 5 to move, so as to apply an upward thrust to the product. When the top plate moves upward, it can drive the No. 1 inclined ejector block and the straight ejector block to move synchronously through the No. 1 inclined ejector rod and the straight ejector rod to apply an upward thrust to the product. When the top plate moves upward, it can drive the No. 2 inclined ejector block to move upward through the No. 2 inclined ejector rod 17 to apply thrust to the product.

[0035] 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.

[0036] Although this article uses the lower template 1, molding cavity 3, front ejector assembly 4, rear ejector assembly 5, inner pull-out slider 6, protrusion 7, core-pulling slider 8, push-pull slide 9, push-pull slider 10, top plate 11, No. 1 inclined ejector block 12, No. 1 inclined ejector rod 13, straight ejector block 14, straight ejector rod 15, No. 2 inclined ejector block 16, No. 2 inclined ejector rod 17, 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 internal extraction auxiliary demoulding mechanism for an injection mold of a rearview mirror housing of an automobile, comprising a lower mold plate (1), characterized in that: The lower template (1) is symmetrically provided with two molding cavities (3), the lower template (1) is provided with a front ejection assembly (4) and a rear ejection assembly (5) connected to the molding cavities (3), the lower template (1) is also provided with an inner pull-out slider (6) connected to the rear ejection assembly (5), the connecting surface between the inner pull-out slider (6) and the rear ejection assembly (5) is an inclined surface, and a protrusion (7) inserted into the molding cavity (3) is protruded on the inclined surface of the inner pull-out slider (6), and the lower template (1) is also provided with an inner pull-out auxiliary demoulding assembly connected to the inner pull-out slider (6).

2. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 1, characterized in that: The inner-pulling auxiliary demoulding component comprises a core-pulling slider (8) slidably matched with the lower mold plate (1); the core-pulling slider (8) is connected to the inner-pulling slider (6) via an oblique guide structure.

3. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 2, characterized in that: The oblique guide structure comprises a push-pull slide groove (9) obliquely arranged on the core-pulling slider (8), and the inner-pulling slider (6) is protrudingly provided with a push-pull slider (10) inserted into the push-pull slide groove (9).

4. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 3, characterized in that: The push-pull slide groove (9) and the push-pull slider (10) have T-shaped cross sections.

5. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 1, characterized in that: A top plate (11) is also provided on the lower side of the lower template (1), and the front ejection assembly (4) and the rear ejection assembly (5) are both connected to the top plate (11).

6. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 5, characterized in that: The front ejection assembly (4) comprises three No. 1 inclined ejector blocks (12) arranged outside the molding cavity (3), and the bottom of the No. 1 inclined ejector block (12) is hingedly connected to the ejector plate (11) through a No. 1 inclined ejector rod (13).

7. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 6, characterized in that: The front ejection assembly (4) further comprises a straight ejection block (14) arranged in the middle of the molding cavity (3), and the bottom of the straight ejection block (14) is fixedly connected to the ejection plate (11) via a straight ejection rod (15).

8. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 7, characterized in that: The first inclined ejector block (12) and the first inclined ejector rod (13) are integrally arranged, and the straight ejector block (14) and the straight ejector rod (15) are integrally arranged.

9. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 1, characterized in that: The rear ejection assembly (5) comprises two No. 2 inclined ejector blocks (16), wherein the No. 2 inclined ejector blocks (16) are hingedly connected to the ejector plate (11) via a No. 2 inclined ejector rod (17), and the No. 2 inclined ejector blocks (16) are connected to the inner sliding block (6) and the connection is inclined.

10. The inner-drawing auxiliary demoulding mechanism of the injection mold for the automobile rearview mirror housing according to claim 9, characterized in that: The second inclined ejector block (16) and the second inclined ejector rod (17) are integrally arranged.

Images