CN212826558U

CN212826558U - Front mold insert pin structure for injection molding of mobile phone camera lens barrel

Info

Publication number: CN212826558U
Application number: CN202021166888.3U
Authority: CN
Inventors: 罗义勇; 曾广昭; 冉强
Original assignee: Hubei Huaxin Photoelectric Co ltd
Current assignee: Hubei Huaxin Photoelectric Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-03-30
Anticipated expiration: 2030-06-22

Abstract

The utility model provides a front mould inlays needle structure for cell-phone camera lens injection moulding, includes the front mould and inlays the needle main part, the front mould inlay needle main part tip be equipped with the boss, the equal contained angle equipartition is equipped with two at least air guide grooves on the boss, epaxial air guide channel that is equipped with of front mould inlay needle main part, the one end in air guide groove extends to the boss periphery, the other end extends to and is connected with air guide channel terminal surface, is equipped with the steady voltage hole on the lateral wall of front mould inlay needle main part, steady voltage hole intercommunication air guide channel. This novel adoption of above-mentioned structure can effectively solve the production of "stranded gas" in the forming process, improves product quality.

Description

Front mold insert pin structure for injection molding of mobile phone camera lens barrel

Technical Field

The utility model relates to an injection moulding field, specific be a front mould inlay pin structure for cell-phone camera lens barrel injection moulding.

Background

The mobile phone camera lens barrel is generally formed by an injection molding process, the thickness of the mobile phone camera lens barrel is small, a rapid high-pressure filling mode is generally adopted during accommodation, a pin needs to be inserted in place in advance before injection molding, a cavity can be reserved in a mold, residual gas after plastic particles are dissolved in the plastic can not be discharged from the cavity, gas trapping is formed, the glue is lacking at the thinnest part of a glue position of a product, a middle hole of the lens barrel is not round, and the quality of the product is affected.

Disclosure of Invention

The utility model aims to solve the technical problem that a front mould inlay pin structure for cell-phone camera lens barrel injection moulding is provided, can effectively solve the production of "stranded gas" in the forming process, improve product quality.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a front mould inlays needle structure for cell-phone camera lens injection moulding, includes the front mould and inlays the needle main part, the front mould inlay needle main part tip be equipped with the boss, the equal contained angle equipartition is equipped with two at least air guide grooves on the boss, epaxial air guide channel that is equipped with of front mould inlay needle main part, the one end in air guide groove extends to the boss periphery, the other end extends to and is connected with air guide channel terminal surface, is equipped with the steady voltage hole on the lateral wall of front mould inlay needle main part, steady voltage hole intercommunication air guide channel.

In the preferred scheme, the mold further comprises a mold and a rear mold insert needle main body, the front mold insert needle main body penetrates through the top of the mold, a rear mold support is arranged below the mold, a rear mold insert needle main body is arranged in the rear mold support, and the rear mold insert needle main body penetrates through the bottom of the mold.

In a preferable scheme, the side wall of the mold is provided with injection molding holes.

In the preferred scheme, an annular cavity is arranged on the inner wall of the rear mold support, an annular bulge is arranged on the outer side wall of the rear mold insert needle main body, the annular bulge is arranged in the annular cavity, a spring is arranged in the annular cavity, and the top surface of the spring is in contact with the bottom surface of the annular bulge.

The utility model provides a front mould inlay pin structure for cell-phone camera lens barrel injection moulding through adopting above-mentioned structure, has following beneficial effect:

(1) the problems of non-round holes in the lens barrel and influenced product quality caused by 'air trapping' caused by rapid high-pressure filling can be solved;

(2) the front die can be detached in advance in the die opening process, so that the phenomenon that the front die is bonded with a product to influence the product forming quality is avoided.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic view of the main structure of the front mold insert pin of the present invention.

Fig. 2 is a schematic structural diagram of the injection molding process of the present invention.

Fig. 3 is a schematic diagram of the product structure.

In the figure: the front mould inlay pin comprises a front mould inlay pin body 1, a boss 2, an air guide groove 3, an air guide channel 4, a pressure stabilizing hole 5, a mould 6, an injection molding hole 7, a rear mould support 8, an annular cavity 801, a rear mould inlay pin body 9, an annular bulge 901 and a spring 10.

Detailed Description

As shown in fig. 1-3, a front mold insert pin structure for injection molding of a lens of a mobile phone camera comprises a front mold insert pin body 1, wherein a boss 2 is arranged at the end of the front mold insert pin body 1, at least two air guide grooves 3 are uniformly distributed on the boss 2 at equal included angles, an air guide channel 4 is arranged on a center shaft of the front mold insert pin body 1, one end of each air guide groove 3 extends to the periphery of the boss 2, the other end of each air guide groove extends to be connected with the end face of the air guide channel 4, a pressure stabilizing hole 5 is arranged on the side wall of the front mold insert pin body 1, and the pressure stabilizing hole 5 is communicated with the air guide channel 4.

In the preferred scheme, the mold further comprises a mold 6 and a rear mold insert needle main body 9, the front mold insert needle main body 1 penetrates through the top of the mold 6, a rear mold support 8 is arranged below the mold 6, the rear mold insert needle main body 9 is arranged in the rear mold support 8, and the rear mold insert needle main body 9 penetrates through the bottom of the mold 6.

In a preferable scheme, the side wall of the mould 6 is provided with an injection molding hole 7.

In a preferable scheme, an annular cavity 801 is arranged on the inner wall of the rear mold support 8, an annular protrusion 901 is arranged on the outer side wall of the rear mold insert needle main body 9, the annular protrusion 901 is arranged in the annular cavity 801, a spring 10 is arranged in the annular cavity 801, and the top surface of the spring 10 is in contact with the bottom surface of the annular protrusion 901.

When the device is used:

as shown in fig. 2, after the mold 6 is installed, the front mold moves downwards and drives the front mold insert needle main body 1 to extend into the mold 6, the front mold insert needle main body is contacted with the rear mold insert needle main body 9 and then presses the rear mold insert needle main body 9 tightly, at the moment, the boss 2 is just positioned in the cavity of the mold 6, due to the downward pressing of the front mold insert needle main body 1, the spring 10 is compressed and generates elasticity, the rapid high-pressure injection molding is carried out through the injection molding hole 7, the 'trapped air' in the cavity enters the air guide channel 4 through the air guide groove 3 and is removed, and the problem of non-circular formed middle hole is effectively solved;

after accomplishing the injection moulding operation, the die sinking in-process because mould 6 no longer plays limiting displacement to annular arch 901, under the effect of spring 10, the little amplitude of back mould inlay needle main part 9 rises and withstands front mould inlay needle main part 1, can realize the quick extraction of the front mould inlay needle main part 1 of die sinking in-process, promotes product quality.

The number of the injection molding holes 7 is the same as that of the air guide grooves 3, for example, in fig. 1, when three air guide grooves 3 with an included angle of 120 ° are provided, three injection molding holes 7 are provided, and a projection included angle between a single injection molding hole 7 and two adjacent air guide grooves 3 on a horizontal plane is 60 °.

The depth of the air guide groove 3 is determined according to the selected raw material, and the depth is tested as follows:

when the PC S3000R is adopted, the thickness of the air guide groove 3 is preferably controlled to be 0.005 mm;

when LCP is adopted, the thickness of the air guide groove 3 is preferably controlled to be 0.003 mm;

when ABS is used, the thickness of the air guide groove 3 is preferably controlled to be 0.007 mm.

The final conclusion is that: the higher the flowability of the raw material, the smaller the thickness of the air guide groove 3 needs to be.

Claims

1. The utility model provides a needle structure is inlayed to front mould for cell-phone camera lens injection moulding, includes front mould inlay needle main part (1), its characterized in that: front mould inlay needle main part (1) tip be equipped with boss (2), the equal contained angle equipartition is equipped with two at least air guide groove (3) on boss (2), epaxial air guide channel (4) that are equipped with of front mould inlay needle main part (1), the one end in air guide groove (3) extends to boss (2) periphery, the other end extends to and is connected with air guide channel (4) terminal surface, be equipped with steady voltage hole (5) on the lateral wall of front mould inlay needle main part (1), steady voltage hole (5) intercommunication air guide channel (4).

2. The front mold insert pin structure for injection molding of the lens barrel of the mobile phone camera according to claim 1, characterized in that: still include mould (6) and back mould inlay needle main part (9), front mould inlay needle main part (1) pass and set up at mould (6) top, mould (6) below is equipped with back mould and supports (8), is equipped with back mould inlay needle main part (9) in back mould support (8), back mould inlay needle main part (9) pass and set up in mould (6) bottom.

3. The front mold insert pin structure for injection molding of the lens barrel of the mobile phone camera according to claim 2, characterized in that: and the side wall of the mould (6) is provided with an injection molding hole (7).

4. The front mold insert pin structure for injection molding of the lens barrel of the mobile phone camera according to claim 2, characterized in that: the inner wall of the rear die support (8) is provided with an annular cavity (801), the outer side wall of the rear die insert needle main body (9) is provided with an annular protrusion (901), the annular protrusion (901) is arranged in the annular cavity (801), a spring (10) is arranged in the annular cavity (801), and the top surface of the spring (10) is in contact with the bottom surface of the annular protrusion (901).