CN218477028U

CN218477028U - Stable positioning mechanism for insert in mold

Info

Publication number: CN218477028U
Application number: CN202222829962.0U
Authority: CN
Inventors: 叶庆; 郝永平
Original assignee: Hokky Electronics Shanghai Co ltd
Current assignee: Hokky Electronics Shanghai Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-02-14
Anticipated expiration: 2032-10-26

Abstract

The utility model relates to a positioning mechanism is stabilized to inserts in mould, it is including extending the pilot pin in the mold core, set up the negative pressure route in the pilot pin, the negative pressure route communicates to the front end of pilot pin, still include with the vacuum pump of negative pressure route connection in order to make the negative pressure, the front end of pilot pin exposes and establishes in order to supply the metal insert cover in the mold core. Because the positioning needle is internally provided with the negative pressure passage, negative pressure is caused in the positioning needle through the vacuum pump, and when the metal insert is sleeved at the front end of the positioning needle, the metal insert is adsorbed through the negative pressure, so that the metal insert is not easy to drop.

Description

Stable positioning mechanism for insert in mold

Technical Field

The utility model relates to a positioning mechanism is stabilized to inserts in mould.

Background

In the production of injection molding products, the inserts need to be placed into a mold before injection molding, for example, the inserts are firstly sleeved on a front mold, and materials wrap the inserts during injection molding, so that the inserts are finally left in the products. The insert is easy to fall off when being put into a mould, and the die pressing risk and the product defect exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a positioning mechanism is stabilized to inserts in mould has solved the problem that prevents the inserts and drop.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a positioning mechanism is stabilized to inserts in mould, it is including extending the pilot pin in the mold core, set up the negative pressure route in the pilot pin, the negative pressure route communicates to the front end of pilot pin, still include with the vacuum pump of negative pressure route connection in order to make the negative pressure, the front end of pilot pin exposes and establishes in order to supply the metal insert cover in the mold core.

Preferably, the front end portion of the pilot pin has a slit extending rearward from the front end surface by a certain length, the slit penetrating the pilot pin in the width direction, the slit dividing the front end of the pilot pin into a first strip and a second strip, thereby allowing the front end of the pilot pin to be elastically inserted into the metal insert.

Preferably, the front end of the positioning needle is in interference fit with the metal insert.

Preferably, the periphery of the positioning pin is further sleeved with an insert sleeve.

Furthermore, the rear end of the positioning pin is flared and abutted against the rear end of the insert sleeve.

Further, the rear end of the insert is flared to prevent the insert from being ejected forward out of the core.

Still further, a backing plate is arranged at the rear end of the positioning needle.

Still further, a connecting passage communicated with the negative pressure passage is further formed in the base plate, and the connecting passage is connected with a vacuum pump.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a positioning mechanism is stabilized to inserts in mould, owing to seted up the negative pressure route in the pilot pin, cause the negative pressure through the vacuum pump in the pilot pin, establish when the front end of pilot pin is established to metal insert cover, adsorb metal insert through the negative pressure for metal insert is difficult for dropping.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:

FIG. 1 is a schematic diagram of a front mold to which the in-mold insert stabilizing and positioning mechanism of the present invention is applied, wherein a mold core is embedded in the front mold, and the in-mold insert stabilizing and positioning mechanism is located in the mold core;

FIG. 2 is an enlarged view taken at A in FIG. 1, showing the metal insert installed;

FIG. 3 is a sectional view through the central axis of the positioning pin in the mold core;

FIG. 4 is another view of the front end of the positioning pin (90 from the view of FIG. 3 of the positioning pin);

wherein the reference numerals are as follows:

1. a mold core;

2. a positioning pin; 21. a negative pressure passage; 22. grooving; 23. a first strip; 24. a second strip;

3. a metal insert; 31. blind holes;

4. sleeving;

5. a backing plate; 51. a connection path;

6. a vacuum pump.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a core 1 is fitted into a mating surface of the front mold. As shown in fig. 2, a plurality of metal inserts 3 are mounted on the mold core 1.

As shown in fig. 3, an insert 4 is embedded in the mold core 1, the insert 4 is a hollow tube, and the rear end (right end in fig. 3) of the insert 4 is flared to prevent the insert 4 from being removed from the mold core 1 forward. The positioning pin 2 is arranged in the insert sleeve 4, and the rear end (the right end in figure 3) of the positioning pin 2 extends outwards and is abutted against the rear end of the insert sleeve 4 so as to prevent the positioning pin 2 from being separated from the insert sleeve 4 forwards. Of course, the insert 4 may not be provided, and the positioning pin 2 may be directly provided in the core 1.

The front end (left end in figure 3) of the positioning needle 2 is sleeved with the metal insert 3. The left end of the metal insert 3 is closed, i.e. the metal insert 3 has a blind hole 31. The front end of the positioning pin 2 is slightly narrowed in the forward direction (leftward direction in fig. 3) and is exposed out of the mold core 1, so that the metal insert 3 can be sleeved conveniently. And the front end of the positioning needle 2 is in interference fit with the metal insert 3, so that the metal insert 3 is not easy to fall off.

As shown in fig. 3, a negative pressure passage 21 is provided in the pilot needle 2, and the negative pressure passage 21 extends in the center of the pilot needle 2. The negative pressure passage 21 extends from the rear end to the front end of the positioning needle 2. A shim plate 5 is provided at the rear end of the pilot pin 2, and a connection passage 51 communicating with the negative pressure passage 21 is opened in the shim plate 5. The connection passage 51 is connected to the vacuum pump 6. A negative pressure is produced in the negative pressure passage 21 by the vacuum pump 6. As shown in another view of the positioning pin 2 in fig. 4, the front end portion of the positioning pin 2 has a notch 22, and the notch 22 extends rearward from the front end by a certain length. The slit groove 22 penetrates the pilot pin 2 in the width direction, and the slit groove 22 is surrounded by the insert 4 so that negative pressure can be maintained. The slit 22 divides the front end of the positioning pin 2 into a first strip 23 and a second strip 24, so that the front end of the positioning pin 2 can be elastically inserted into the metal insert 3. The negative pressure passage 21 communicates with the slit groove 22.

The vacuum pump 6 works, and negative pressure is finally formed in the whole connecting passage 51, the negative pressure passage 21 and the blind hole 31, so that the metal insert 3 is firmly adsorbed at the front end of the positioning needle 2 and is not easy to fall off from the front end of the positioning needle 2, and the die pressing risk and the product defect are reduced.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The stable positioning mechanism for the insert in the mold is characterized by comprising a positioning needle (2) extending in a mold core (1), wherein a negative pressure passage (21) is formed in the positioning needle (2), the negative pressure passage (21) is communicated to the front end of the positioning needle (2), the stable positioning mechanism further comprises a vacuum pump (6) connected with the negative pressure passage (21) to produce negative pressure, and the front end of the positioning needle (2) is exposed out of the mold core (1) to be sleeved with a metal insert (3).

2. The in-mold insert stabilizing and positioning mechanism of claim 1, further comprising: the front end portion of the positioning pin (2) is provided with a cutting groove (22) which extends from the front end surface to the back by a certain length, the cutting groove (22) penetrates through the positioning pin (2) in the width direction, and the cutting groove (22) divides the front end of the positioning pin (2) into a first strip (23) and a second strip (24), so that the front end of the positioning pin (2) can be elastically inserted into the metal insert (3).

3. The in-mold insert stabilizing and positioning mechanism of claim 1, further comprising: the front end of the positioning needle (2) is in interference fit with the metal insert (3).

4. The in-mold insert stabilizing and positioning mechanism of claim 1, wherein: the periphery of the positioning pin (2) is also sleeved with an insert sleeve (4).

5. The in-mold insert stabilizing and positioning mechanism of claim 4, wherein: the rear end of the positioning pin (2) is flared and is abutted against the rear end of the embedding sleeve (4).

6. The in-mold insert stabilizing and positioning mechanism of claim 5, wherein: the rear end of the insert sleeve (4) extends outwards to prevent the insert sleeve (4) from being separated from the mold core (1) forwards.

7. The in-mold insert stabilizing and positioning mechanism of claim 6, wherein: the rear end of the positioning needle (2) is also provided with a backing plate (5).

8. The in-mold insert stabilizing and positioning mechanism of claim 7, wherein: and a connecting passage (51) communicated with the negative pressure passage (21) is further formed in the base plate (5), and the connecting passage (51) is connected with a vacuum pump (6).