Structure convenient for demolding of inclined top of front mold

Abstract

The invention relates to a structure facilitating demolding of a front mold pitched roof. The structure comprises a front mold fixing plate; the front mold and the rear mold are arranged below the front mold fixing plate and are closed to form a mold cavity; the front mold ejector plate is arranged in a cavity formed between the front mold fixing plate and the front mold; one end of the front mold linkage assembly is fixed on the front mold ejector plate, and the other end of the front mold linkage assembly penetrates through the front mold; the movable mold driving assembly is arranged on the working side of the rear mold and is connected with the front mold linkage assembly; and one end of the pitched roof assembly is fixed on the front mold ejector plate, and the other end of the pitched roof assembly penetrates through the front mold and is positioned in the mold cavity so as to prepare a back-off part of a plastic product. Compared with the prior art, according to the structure designed by the invention, the rear mold moves downwards, the movable mold driving assembly is separated from the front mold linkage assembly, the front mold linkage assembly loses support, and the front mold ejector plate moves downwards, so that the pitched roof in the pitched roof assembly is driven to be separated from a product, and pitched roof demolding is realized.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a structure that facilitates demoulding of a front mold by tilting a top. Background Art

[0002] In the mold industry, for plastic products with undercuts, the demoulding direction of the undercut part of the product is inconsistent with the mold opening direction, and a front mold inclined top structure is required.

[0003] The existing front mold inclined top demoulding structure needs to use the Belden standard part with model Z3-11-60-150 as auxiliary mold opening, see Figure 2 , 3 The ball head of this standard part has poor strength and is prone to wear and even breakage, which not only causes the mold to fail to open and close normally, but also seriously affects production efficiency and product yield. Summary of the invention

[0004] The purpose of the present invention is to provide a structure that facilitates demoulding of the front mold by tilting the top in order to overcome at least one of the defects of the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A structure for facilitating demoulding of a front mold by tilting a top, comprising:

[0007] Front mold fixing plate; front mold and rear mold arranged below the front mold fixing plate, the two are closed to form a mold cavity; front mold ejector plate, arranged in the cavity formed between the front mold fixing plate and the front mold; front mold linkage assembly, one end of which is fixed to the front mold ejector plate and the other end passes through the front mold; movable mold driving assembly, arranged on the working side of the rear mold and connected to the front mold linkage assembly; inclined ejector assembly, one end of which is fixed to the front mold ejector plate and the other end passes through the front mold and is located in the mold cavity to prepare the undercut part of the plastic product;

[0008] When the mold is opened, the rear mold moves downward, the movable mold driving assembly separates from the front mold linkage assembly, the front mold linkage assembly loses its support, and the front mold ejector plate moves downward, driving the inclined ejector in the inclined ejector assembly to separate from the product, thereby realizing the inclined ejector demoulding.

[0009] Furthermore, the front mold linkage assembly includes a connecting rod; one end of the connecting rod is fixed to the front mold ejector plate, and the other end passes through the front mold and is provided with a nylon mold locker.

[0010] Furthermore, a first bolt for connecting the connecting rod and the front mold ejector plate is provided between the connecting rod and the front mold ejector plate.

[0011] Furthermore, a second bolt for connecting the connecting rod and the nylon mold locker is provided between the connecting rod and the nylon mold locker.

[0012] Furthermore, the movable mold driving assembly includes a bushing fixed on the rear mold; the nylon mold locker is embedded in the bushing and abuts against the inner wall of the bushing. The embedded nylon mold locker and bushing control the up and down movement of the front mold ejector plate, and the bushing can reduce the wear of the nylon mold locker.

[0013] Furthermore, a third bolt is provided between the bushing and the rear mold for connecting the two.

[0014] Furthermore, the inclined ejector assembly includes an inclined ejector fixing seat and an inclined ejector; the inclined ejector fixing seat is fixed on the front mold ejector pin plate; one end of the inclined ejector is fixed on the inclined ejector fixing seat, and the other end passes through the front mold and is located in the mold cavity.

[0015] Furthermore, there are at least two inclined roofs which are arranged opposite to each other.

[0016] Furthermore, the cavity formed between the front mold fixing plate and the front mold is a rectangular cavity.

[0017] Furthermore, the height of the cavity formed between the front mold fixing plate and the front mold is greater than the thickness of the front mold ejector plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The structure designed in the present invention is that the rear mold moves downward, the movable mold driving assembly is separated from the front mold linkage assembly, the front mold linkage assembly loses support, and the front mold ejector plate moves downward, driving the inclined ejector in the inclined ejector assembly to separate from the product, thereby realizing the inclined ejector demolding.

[0020] (2) The present invention controls the up and down movement of the front mold ejector plate through the embedded nylon mold locker and bushing. The bushing can reduce the wear of the nylon mold locker. Compared with Belden standard parts, the nylon mold locker and bushing in the present invention are universal parts with a long service life and no strength defects in the structural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structure that facilitates demoulding of the front mold by tilting the top in the embodiment;

[0022] Figure 2 It is a schematic diagram of Belden standard parts in the prior art;

[0023] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0024] The numbers in the figure are as follows: 1. Front mold ejector plate; 2. Connecting rod; 3. First bolt; 4. Slant ejector fixing seat; 5. Slant ejector; 6. Product; 7. Pressing plate; 8. Second bolt; 9. Nylon mold locker; 10. Bushing; 11. Third bolt; 12. Front mold fixing plate; 13. Front mold; 14. Back mold; 15-Baitong standard part; 16-ball head. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0026] Example

[0027] See Figure 1 , a structure that facilitates demoulding of the front mold by tilting the top, comprising:

[0028] A front mold fixing plate 12; a front mold 13 and a rear mold 14 arranged below the front mold fixing plate 12, which are closed to form a mold cavity; a front mold ejector plate 1, which is arranged in the cavity formed between the front mold fixing plate 12 and the front mold 13; a front mold linkage assembly, one end of which is fixed to the front mold ejector plate 1, and the other end passes through the front mold 13; a movable mold driving assembly, which is arranged on the working side of the rear mold 14 and is connected to the front mold linkage assembly; an inclined ejector assembly, one end of which is fixed to the front mold ejector plate 1, and the other end passes through the front mold 13 and is located in the mold cavity to prepare an undercut portion of a plastic product;

[0029] See Figure 1 The inclined ejector assembly includes an inclined ejector fixing seat 4 and an inclined ejector 5; the inclined ejector fixing seat 4 is fixed on the front mold ejector plate 1; one end of the inclined ejector 5 is fixed to the inclined ejector fixing seat 4, and the other end passes through the front mold and is located in the mold cavity. There are at least two inclined ejectors 5 and they are arranged oppositely.

[0030] See Figure 1 In this embodiment, the cavity formed between the front mold fixing plate 12 and the front mold 13 is a rectangular cavity, and the height of the rectangular cavity is greater than the thickness of the front mold ejector plate 1.

[0031] See Figure 1 In this embodiment, the front mold linkage assembly includes a connecting rod 2; one end of the connecting rod 2 is fixed to the front mold ejector plate 1, and the other end passes through the front mold and is provided with a nylon mold locker 9. The connecting rod 2 is fixedly connected to the front mold ejector plate 1 by a first bolt 3. The connecting rod 2 is fixedly connected to the nylon mold locker 9 by a second bolt 8.

[0032] See Figure 1 In this embodiment, the movable mold driving assembly includes a bushing 10 fixed on the rear mold; the nylon mold locker 9 is embedded in the bushing 10 and abuts against the inner wall of the bushing 10. The bushing 10 is fixedly connected to the rear mold 14 by a third bolt 11.

[0033] Working principle:

[0034] The structure designed in this embodiment can be applied to injection molds. When the mold is opened, the rear mold 14 moves downward, the movable mold driving assembly separates from the front mold linkage assembly, the front mold linkage assembly loses support, and the front mold ejector plate 1 moves downward, driving the inclined ejector 5 in the inclined ejector assembly to separate from the product, thereby realizing inclined ejector demolding.

[0035] The above is only a preferred embodiment of the present invention, and does not limit the present invention in other forms. Any technician familiar with the profession may use the above disclosed technical content to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the technical solution of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A structure that facilitates demoulding of the front mold by tilting the top, characterized in that: include: Front mold fixing plate (12); A front mold (13) and a rear mold (14) are arranged below the front mold fixing plate (12), and the two are closed to form a mold cavity; A front mold ejector plate (1) is arranged in a cavity formed between a front mold fixing plate (12) and a front mold (13); A front mold linkage assembly, one end of which is fixed on the front mold ejector plate (1) and the other end of which passes through the front mold (13); A movable mold driving assembly is arranged on the working side of the rear mold (14) and is connected to the front mold linkage assembly; An inclined ejector assembly, one end of which is fixed on the front mold ejector plate (1), and the other end of which passes through the front mold (13) and is located in the mold cavity to prepare an undercut portion of a plastic product; When the mold is opened, the rear mold (14) moves downward, the movable mold driving assembly is separated from the front mold linkage assembly, the front mold linkage assembly loses support, and the front mold ejector plate (1) moves downward, driving the inclined ejector in the inclined ejector assembly to separate from the product, thereby realizing the inclined ejector demoulding.

2. A structure for facilitating demoulding of the front mold by tilting the top according to claim 1, characterized in that: The front mold linkage assembly comprises a connecting rod (2); one end of the connecting rod (2) is fixed to the front mold ejector plate (1), and the other end passes through the front mold and is provided with a nylon mold locker (9).

3. A structure for facilitating demoulding of the front mold by tilting the top according to claim 2, characterized in that: A first bolt (3) for connecting the connecting rod (2) and the front mold ejector plate (1) is provided between the connecting rod (2) and the front mold ejector plate (1).

4. A structure for facilitating demoulding of the front mold by tilting the top according to claim 2, characterized in that: A second bolt (8) for connecting the connecting rod (2) and the nylon mold locker (9) is provided between the connecting rod (2) and the nylon mold locker (9).

5. The structure for facilitating demoulding of the front mold by tilting the top according to claim 2, characterized in that: The movable mold driving assembly comprises a bushing (10) fixed on the rear mold; the nylon mold locker (9) is embedded in the bushing (10).

6. The structure for facilitating demoulding of the front mold by tilting the top according to claim 5, characterized in that: A third bolt (11) is provided between the bushing (10) and the rear mold (14) for connecting the two.

7. The structure for facilitating demoulding of the front mold by tilting the top according to claim 1, characterized in that: The inclined ejector assembly comprises an inclined ejector fixing seat (4) and an inclined ejector (5); the inclined ejector fixing seat (4) is fixed on the front mold ejector pin plate (1); one end of the inclined ejector (5) is fixed on the inclined ejector fixing seat (4), and the other end passes through the front mold and is located in the mold cavity.

8. The structure for facilitating demoulding of the front mold by tilting the top according to claim 7, characterized in that: There are at least two inclined roofs (5) which are arranged opposite to each other.

9. The structure for facilitating demoulding of the front mold by tilting the top according to claim 1, characterized in that: The cavity formed between the front mold fixing plate (12) and the front mold (13) is a rectangular cavity.

10. The structure for facilitating demoulding of the front mold by tilting the top according to claim 1, characterized in that: The height of the cavity formed between the front mold fixing plate (12) and the front mold (13) is greater than the thickness of the front mold ejector plate (1).

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