Split type optical mold core structure

Abstract

The utility model discloses a split type optical mold core structure. The split type optical mold core structure comprises a mold core column and a lining, a cavity bottom convex column is integrally formed at the top of the mold kernel column, a first cavity wall hole is formed in the bushing, and the cavity bottom convex column is placed in the first cavity wall hole; an injection mold cavity is formed between the top face of the cavity bottom protruding column and the cavity wall hole, and a feeding channel is formed in the top face of the lining and communicates with the injection mold cavity. A second cavity wall hole is further formed in the lining, the mold kernel column is placed in the second cavity wall hole, and the height of the mold kernel column is smaller than the length of the second cavity wall hole; the injection mold further comprises at least one gasket which is placed in the second cavity wall hole and located at the bottom of the mold kernel column, and the gasket is used for adjusting the distance between the mold kernel column and the bottom of the second cavity wall hole so as to change the thickness of the injection mold cavity. A plurality of brand-new mold core structures do not need to be correspondingly designed and manufactured in advance, the requirements of optical injection molding products with different thicknesses can be met, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of optical mold cores, and particularly relates to a split-type optical mold core structure. Background Art

[0002] An optical mold core refers to a mold core structure used in an optical mold. The quality of the optical mold core directly affects the quality of optical products. A mold cavity structure is provided on the optical mold core. Different optical products require different mold cavity structures. Generally, the processing of complex structures inside the mold cavity is completed through machining such as turning and milling. The prior art 201921428959.X proposes a split-type optical mold core structure, which avoids the limitation of the processing of the bottom structure of the injection mold cavity through a split-type design and improves the processing accuracy to a certain extent. However, in this prior art, since the height of the cavity bottom convex column is fixed, the thickness of the optical product (such as a lens) formed by injection molding is a fixed value. Therefore, if optical products of multiple thicknesses need to be injection molded, multiple brand-new mold core structures need to be designed and manufactured in advance, which will affect the processing efficiency and the cost is also relatively high. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a split-type optical mold core structure, which does not need to design and manufacture multiple brand-new mold core structures in advance, can adapt to the requirements of optical injection products of different thicknesses, has a simple structure and a low cost.

[0004] To solve the above technical problem, the utility model discloses a split-type optical mold core structure, which includes a mold core column and a bushing; a cavity bottom convex column is integrally formed at the top of the mold core column, a first cavity wall hole is provided in the bushing, the cavity bottom convex column is placed in the first cavity wall hole, and the height of the cavity bottom convex column is less than the length of the first cavity wall hole; an injection mold cavity is formed between the top surface of the cavity bottom convex column and the cavity wall hole, a feeding channel is provided on the top surface of the bushing, and the feeding channel communicates with the injection mold cavity; wherein,

[0005] A second cavity wall hole is also provided in the bushing, the mold core column is placed in the second cavity wall hole, and the height of the mold core column is less than the length of the second cavity wall hole;

[0006] It further includes at least one gasket, the gasket is placed in the second cavity wall hole and at the bottom of the mold core column, and the gasket is used to adjust the distance between the mold core column and the bottom of the second cavity wall hole to change the thickness of the injection mold cavity.

[0007] As an optional implementation manner, the cavity bottom convex column is a section cylinder with two parallel sections, and the two parallel sections are parallel to the axis of the section cylinder.

[0008] As another alternative embodiment, an end structure is provided on the top surface of the cavity bottom convex post; the first cavity wall hole fits the side profile of the end structure.

[0009] As another alternative embodiment, an assembly guiding rod is further included; a first assembly guiding hole is provided on the gasket, a second assembly guiding hole is provided on the mold core post, and a third assembly guiding hole is provided on the bushing;

[0010] The first assembly guiding hole, the second assembly guiding hole and the third assembly guiding hole are coaxial, and the assembly guiding rod is used to pass through the first assembly guiding hole, the second assembly guiding hole and the third assembly guiding hole to guide the assembly.

[0011] As another alternative embodiment, an air vent groove and an exhaust hole are further provided on the bushing, two ends of the air vent groove are respectively communicated with the feeding channel and the exhaust hole, and the exhaust hole is communicated with the outside.

[0012] As another alternative embodiment, at least one groove surrounding the side surface is provided on the side surface of the mold core post.

[0013] As another alternative embodiment, a trimming is provided at the bottom end of the mold core post.

[0014] As another alternative embodiment, a relief through hole is provided in the bushing, a thimble hole is provided at the bottom of the feeding channel, and the thimble hole is communicated with the relief through hole.

[0015] Compared with the prior art, the embodiment of the present utility model has the following beneficial effects:

[0016] By providing at least one gasket in the embodiment of the present utility model, the position of the mold core post in the second cavity wall hole relative to the bottom of the second cavity wall hole can be flexibly raised, and then the thickness of the injection mold cavity can be adjusted. If optical products with multiple thicknesses need to be injection molded, only the number and / or thickness of the gaskets need to be changed to achieve the purpose, without the need to design and manufacture multiple brand-new mold core structures in advance, which can meet the requirements of optical injection products with different thicknesses, and has a simple structure and low cost. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a split optical mold core structure disclosed in the embodiment of the present utility model;

[0019] Figure 2 is a schematic cross-sectional structure diagram of a split optical mold core structure disclosed in an embodiment of the present utility model;

[0020] Figure 3 is a schematic structure diagram of a bushing of a split optical mold core structure disclosed in an embodiment of the present utility model;

[0021] Figure 4 is a schematic structure diagram of a mold core post and a cavity bottom convex post of a split optical mold core structure disclosed in an embodiment of the present utility model. Specific embodiments

[0022] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] See Figure 1 , an embodiment of the present utility model discloses a split optical mold core structure, including a mold core post 2 and a bushing 1; a cavity bottom convex post 3 is integrally formed at the top of the mold core post 2, a first cavity wall hole 11 is provided in the bushing 1, the cavity bottom convex post 3 is placed in the first cavity wall hole 11, and the height of the cavity bottom convex post 3 is less than the length of the first cavity wall hole 11; an injection mold cavity 12 is formed between the top surface of the cavity bottom convex post 3 and the cavity wall hole, a feed channel 13 is provided on the top surface of the bushing 1, and the feed channel 13 communicates with the injection mold cavity 12; wherein, a second cavity wall hole 14 is further provided in the bushing 1, the mold core post 2 is placed in the second cavity wall hole 14, and the height of the mold core post 2 is less than the length of the second cavity wall hole 14; at least one gasket 4 is further included, the gasket 4 is placed in the second cavity wall hole 14 and at the bottom of the mold core post 2, and the gasket 4 is used to adjust the distance of the mold core post 2 relative to the bottom of the second cavity wall hole 14 to change the thickness of the injection mold cavity 12.

[0024] By providing at least one gasket 4 in the embodiment of the present utility model, the position of the mold core post 2 in the second cavity wall hole 14 relative to the bottom of the second cavity wall hole 14 can be flexibly raised, and further the thickness of the injection mold cavity 12 can be adjusted. If optical products with multiple thicknesses need to be injection molded, only the number and / or thickness of the gaskets need to be changed to achieve the goal, without the need to design and manufacture multiple brand-new mold core structures in advance, which can meet the requirements of optical injection products with different thicknesses, and has a simple structure and low cost.

[0025] In an alternative embodiment, the cavity bottom boss 3 is a section cylinder having two parallel sections 31, and the two parallel sections are parallel to the axis of the section cylinder.

[0026] In yet another alternative embodiment, an end structure 32 is provided on the top surface of the cavity bottom boss 3; the side profile of the first cavity wall hole 11 fits the side profile of the end structure 32. The end structure 32 protrudes around relative to other parts of the cavity bottom boss 3.

[0027] In this embodiment, since the side profile of the first cavity wall hole 11 fits the side profile of the end structure 32, during processing, only the end structure 32 needs to be precision machined to improve its surface dimensional accuracy, and other parts of the cavity bottom boss 3 can be rough machined, which can not only ensure the fitting accuracy between the first cavity wall hole 11 and the end structure 32, but also improve the processing efficiency.

[0028] In yet another alternative embodiment, an assembly guiding rod 5 is further included; a first assembly guiding hole 41 is provided on the gasket 4, a second assembly guiding hole 21 is provided on the mold core post 2, and a third assembly guiding hole 15 is provided on the bushing 1; the first assembly guiding hole 41, the second assembly guiding hole 21 and the third assembly guiding hole 15 are coaxial, and the assembly guiding rod 5 is used to pass through the first assembly guiding hole 41, the second assembly guiding hole 21 and the third assembly guiding hole 15 to guide the assembly.

[0029] In this embodiment, during assembly, the guiding rod 5 can be first installed in the guiding hole 15 of the bushing 1, and then, under the guidance of the guiding rod 5, the mold core post 2 and the gasket 4 are installed in sequence.

[0030] In yet another alternative embodiment, an air vent groove 16 and an exhaust hole 17 are further provided on the bushing 1, both ends of the air vent groove 16 are respectively communicated with the feed channel 13 and the exhaust hole 17, and the exhaust hole 17 is communicated with the outside.

[0031] In yet another alternative embodiment, at least one groove 22 surrounding the side surface is provided on the side surface of the mold core post 2.

[0032] In yet another alternative embodiment, a trimming edge 23 is provided at the bottom end of the mold core post 2.

[0033] In yet another alternative embodiment, a relief through hole 18 is provided in the bushing 1, a thimble hole 19 is provided at the bottom of the feed channel 13, and the thimble hole is communicated with the relief through hole.

[0034] In yet another alternative embodiment, referring to Figure 2 , the gasket 4 can be provided with a through hole, and a threaded hole is provided at the bottom surface of the mold core post 2, and the gasket 4 is fixed on the mold core post 2 by screws.

[0035] The disclosure of the content disclosed in the embodiments of the present utility model only relates to the preferred embodiments of the present utility model, and is only used to illustrate the technical solutions of the present utility model, rather than limiting it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A split optical mold core structure, comprising a mold core column and a bushing; the top of the mold core column is integrally formed with a cavity bottom convex column, the bushing is provided with a first cavity wall hole, the cavity bottom convex column is placed in the first cavity wall hole, and the height of the cavity bottom convex column is less than the length of the first cavity wall hole; an injection mold cavity is formed between the top surface of the cavity bottom convex column and the cavity wall hole, the top surface of the bushing is provided with a feed channel, and the feed channel is connected to the injection mold cavity; characterized in that, The bushing is also provided with a second cavity wall hole, the mold core column is placed in the second cavity wall hole, and the height of the mold core column is less than the length of the second cavity wall hole; It also includes at least one gasket, which is placed in the second cavity wall hole and located at the bottom of the mold core column. The gasket is used to adjust the distance of the mold core column relative to the bottom of the second cavity wall hole to change the thickness of the injection mold cavity.

2. The split optical mold structure according to claim 1, characterized in that: The cavity bottom convex column is a section cylinder with two parallel sections, and the two parallel sections are parallel to the axis of the section cylinder.

3. The split optical mold structure according to claim 2, characterized in that: The top surface of the cavity bottom convex column is provided with an end structure; the first cavity wall hole is in contact with the side profile of the end structure.

4. The split optical mold structure according to claim 1, characterized in that: It also includes an assembly guide rod; the gasket is provided with a first assembly guide hole, the mold core column is provided with a second assembly guide hole, and the bushing is provided with a third assembly guide hole; The first assembly guide hole, the second assembly guide hole and the third assembly guide hole are coaxial, and the assembly guide rod is used to pass through the first assembly guide hole, the second assembly guide hole and the third assembly guide hole to guide assembly.

5. The split optical mold structure according to claim 1, characterized in that: A ventilation groove and an exhaust hole are also provided on the bushing, and the two ends of the ventilation groove are respectively connected to the feed channel and the exhaust hole, and the exhaust hole is connected to the outside.

6. The split optical mold structure according to claim 1, characterized in that: The side surface of the mold core column is provided with at least one groove surrounding the side surface.

7. The split optical mold structure according to claim 1, characterized in that: The bottom end of the mold core column is provided with a cutting edge.

8. The split optical mold structure according to claim 1, characterized in that: A clearance through hole is provided in the bushing, and an ejector hole is provided at the bottom of the feed channel, and the ejector hole is connected to the clearance through hole.

Images