Front mold core-pulling mold for injection molding part

Abstract

The front mold core-pulling mold comprises a bottom plate assembly and a top plate assembly, a guide rod is jointly connected between the bottom plate assembly and the top plate assembly, and the guide rod is fixed to the bottom plate assembly so that the top plate assembly can slide in the height direction of the guide rod. Core pulling structures are fixedly arranged on the two sides, close to the injection molding area, of the top of the bottom plate assembly. Through the core pulling structure and the driving structure, after the top plate assembly and the bottom plate assembly are closed to form pressurizing injection molding of an injection part, the top plate assembly slides in the height direction of the guide rod, so that the top plate assembly is separated from the bottom plate assembly, and the driving block and the driving terminal are synchronously driven to move in the separation process; and the driving terminal is matched with the inclined plane table to form driving lateral movement of the core-pulling plate, so that the pulling plate on the core-pulling plate and the core-pulling terminal on the core-pulling plate are opened, unlocking of the outer side of the injection molding part is formed, and the injection molding part is ejected out through the ejector pin below the injection molding area.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, in particular to a front mold core-pulling mold for injection molding parts. Background Art

[0002] Injection molding is a method of producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. Injection molding machine (referred to as injection machine or injection molding machine) is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Injection molding is achieved through injection molding machines and molds.

[0003] In the injection molding process, a core-pulling mold is usually involved. The core-pulling mold is designed to allow the mold to be well separated from the buckle of the injection molded part after the actual injection molding is completed, so as to realize the top mold material removal action. For this reason, we propose a front mold core-pulling mold for injection molding parts. Utility Model Content

[0004] The utility model aims to provide a front mold core-pulling mold for injection molding, which solves the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] A front mold core-pulling mold for injection molded parts includes a bottom plate assembly and a top plate assembly, wherein the bottom plate assembly and the top plate assembly are commonly connected with a guide rod, wherein the guide rod is fixed on the bottom plate assembly for allowing the top plate assembly to slide along its height direction, core-pulling structures are fixedly provided on both sides of the top of the bottom plate assembly near the injection molding area, and a driving structure for driving the core-pulling structure to move is provided at the bottom of the top plate assembly.

[0007] As a preferred technical solution of the present application, the core-pulling structure includes a fixed plate fixed on the base plate assembly and a core-pulling plate slidably arranged on the inner side of the fixed plate.

[0008] As a preferred technical solution of the present application, a bevel platform is provided inside the core-pulling plate;

[0009] The ramp platform is distributed in an inclined state toward the injection molding area as a whole.

[0010] As a preferred technical solution of the present application, the core pulling structure further includes a drawing groove opened on the inner side of the core pulling plate, and a drawing plate is slidably provided in the drawing groove.

[0011] As a preferred technical solution of the present application, one end of the pull plate extends outside the pull groove to form a core-pulling terminal, and the end of the core-pulling terminal is buckled on the outside of the injection molded part.

[0012] As a preferred technical solution of the present application, the driving structure includes a driving block fastened to the bottom of the top plate assembly by bolts, and the bottom of the driving block extends toward the core-pulling plate to form a driving terminal.

[0013] As a preferred technical solution of the present application, the driving terminal is adapted to the shape of the inclined platform;

[0014] When the top plate assembly moves up and down relative to the bottom plate assembly, the driving terminal slides in the inclined table to form a horizontal drive for the core pulling structure.

[0015] As a preferred technical solution of the present application, the same core-pulling plate has two pulling plates and is distributed on both sides of the pulling groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] Through the core pulling structure and driving structure, after the top plate assembly and the bottom plate assembly are closed to form the pressurized injection molding of the injection molded part, the top plate assembly slides along the height direction of the guide rod to separate it from the bottom plate assembly. During the separation process, the driving block and the driving terminal will be synchronously driven to move, so that the driving terminal cooperates with the inclined table to form a driving lateral shift of the core pulling plate, so that the pulling plate on the core pulling plate and the core pulling terminal on it are opened, thereby unlocking the outside of the injection molded part, so that the injection molded part can be ejected by the ejector pin under the injection molding area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the front mold core-pulling mold for injection molding provided in this application;

[0019] Figure 2 A schematic diagram of the opening structure of the front mold core-pulling mold for injection molding provided in this application;

[0020] Figure 3 A schematic diagram of the structure of the front mold core-pulling mold for injection molding provided in this application from a bottom view;

[0021] Figure 4 A schematic diagram of a portion of the structure of a front mold core-pulling mold for injection molding provided in this application;

[0022] Figure 5 This is a schematic diagram of the core pulling structure of this application;

[0023] Figure 6 for Figure 5 Enlarged structural diagram at A in the middle.

[0024] Indicated in the figure: 1. Bottom plate assembly; 2. Top plate assembly; 3. Guide rod; 4. Injection molding area; 5. Core pulling structure; 6. Driving structure;

[0025] 51. Fixed plate; 52. Pull-out plate; 53. Inclined table; 54. Drawing groove; 55. Pull-out plate; 56. Pull-out terminal;

[0026] 61. Driving block; 62. Driving terminal. DETAILED DESCRIPTION

[0027] like Figure 1-Figure 6 As shown, this embodiment proposes a front mold core-pulling mold for injection molding, including a bottom plate assembly 1 and a top plate assembly 2, a guide rod 3 is commonly connected between the bottom plate assembly 1 and the top plate assembly 2, the guide rod 3 is fixed on the bottom plate assembly 1 for the top plate assembly 2 to slide along its height direction, a core-pulling structure 5 is fixedly provided on both sides of the top of the bottom plate assembly 1 near the injection molding area 4, and a driving structure 6 for driving the core-pulling structure 5 to move is provided at the bottom of the top plate assembly 2;

[0028] The core pulling structure 5 includes a fixed plate 51 fixed on the bottom plate assembly 1 and a core pulling plate 52 slidably arranged inside the fixed plate 51; an inclined platform 53 is provided inside the core pulling plate 52;

[0029] The inclined platform 53 is distributed in an inclined state toward the injection molding area 4 as a whole. The core pulling structure 5 also includes a drawing groove 54 opened on the inner side of the core pulling plate 52. A drawing plate 55 is slidably arranged in the drawing groove 54.

[0030] One end of the pull plate 55 extends outside the pull groove 54 to form a core pulling terminal 56, and the end of the core pulling terminal 56 is buckled on the outside of the injection molded part;

[0031] The driving structure 6 includes a driving block 61 fastened to the bottom of the top plate assembly 2 by bolts, and the bottom of the driving block 61 extends toward the core-pulling plate 52 to form a driving terminal 62;

[0032] The driving terminal 62 is adapted to the shape of the inclined surface platform 53. When the top plate assembly 2 moves up and down relative to the bottom plate assembly 1, the driving terminal 62 slides in the inclined surface platform 53 to form a horizontal drive for the core pulling structure 5.

[0033] The same core pulling plate 52 has two pulling plates 55 disposed on both sides of the pulling groove 54 .

[0034] After the top plate assembly 2 and the bottom plate assembly 1 are closed to form the pressurized injection molding of the injection molded part, the plastic part after injection molding is cooled and molded, and the top plate assembly 2 is driven to slide along the height direction of the guide rod 3, so that it is separated from the bottom plate assembly 1. During the separation process, the driving block 61 and the driving terminal 62 are synchronously driven to move, so that the driving terminal 62 cooperates with the inclined table 53 to form a driving side shift of the core pulling plate 52, so that the pulling plate 55 on the core pulling plate 52 and the core pulling terminal 56 thereon are opened, so as to unlock the outside of the injection molded part, so as to eject the injection molded part through the ejector pin under the injection molding area;

[0035] Similarly, during the closing process of the top plate assembly 2 and the bottom plate assembly 1 before injection molding, the downwardly moved top plate assembly 2 also drives the driving block 61 to drive the driving terminal 62 thereon to slide in the corresponding inclined table 53, so that it drives the inclined table 53. The driven inclined table 53 will drive the core pulling plate 52 and the pulling plate 55 thereon to slide toward the injection molding area 4, so that the core pulling terminal 56 slides back to the injection molding area 4, so as to close and form a complete injection molding space waiting for the pressurized injection molding operation.

[0036] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A front mold core-pulling mold for injection molding, characterized in that: The invention comprises a bottom plate assembly (1) and a top plate assembly (2), wherein a guide rod (3) is connected between the bottom plate assembly (1) and the top plate assembly (2), wherein the guide rod (3) is fixed on the bottom plate assembly (1) so as to allow the top plate assembly (2) to slide along its height direction, core pulling structures (5) are fixedly provided on both sides of the top of the bottom plate assembly (1) near the injection molding area (4), and a driving structure (6) for driving the core pulling structure (5) to move is provided at the bottom of the top plate assembly (2).

2. A front mold core-pulling mold for injection molding according to claim 1, characterized in that: The core-pulling structure (5) comprises a fixed plate (51) fixed on the bottom plate assembly (1) and a core-pulling plate (52) slidably arranged inside the fixed plate (51).

3. A front mold core-pulling mold for injection molding according to claim 2, characterized in that: The core-pulling plate (52) is provided with an inclined platform (53) inside; The inclined platform (53) is distributed in an inclined state as a whole towards the injection molding area (4).

4. A front mold core-pulling mold for injection molding according to claim 3, characterized in that: The core pulling structure (5) further comprises a drawing groove (54) formed on the inner side of the core pulling plate (52), and a drawing plate (55) is slidably arranged in the drawing groove (54).

5. A front mold core-pulling mold for injection molding according to claim 4, characterized in that: One end of the pull plate (55) extends outside the pull groove (54) to form a core-pulling terminal (56), and the end of the core-pulling terminal (56) is buckled onto the outside of the injection molded part.

6. A front mold core-pulling mold for injection molding according to claim 5, characterized in that: The driving structure (6) comprises a driving block (61) fastened to the bottom of the top plate assembly (2) by means of bolts, and the bottom of the driving block (61) extends in the direction of the core pulling plate (52) to form a driving terminal (62).

7. A front mold core-pulling mold for injection molding according to claim 6, characterized in that: The driving terminal (62) is adapted to the shape of the inclined platform (53); When the top plate assembly (2) moves up and down relative to the bottom plate assembly (1), the driving terminal (62) slides in the inclined platform (53) to form a horizontal drive for the core pulling structure (5).

8. The front mold core-pulling mold for injection molding according to claim 5, characterized in that: The same core pulling plate (52) has two pulling plates (55) which are distributed on both sides of the pulling groove (54).

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