CN211492609U

CN211492609U - Joint injection molding mold

Info

Publication number: CN211492609U
Application number: CN201922142722.1U
Authority: CN
Inventors: 陈杰; 郝永平
Original assignee: Hokky Electronics Shanghai Co ltd
Current assignee: Hokky Electronics Shanghai Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-09-15
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to a connect injection moulding mould, it includes: the male die is provided with a placing platform for placing a plurality of pins in the connector, and is also provided with an insert which supports the pins below; the female die is provided with an insert needle, the insert needle corresponds to the material belt among the pins, the insert needle is provided with a cutting end, and the cutting end is positioned above the material belt; when the mold is closed, the insert and the insert pin are matched to break the material belt. The male die is provided with the insert, the female die is provided with the insert pin, the pin is placed in the placing platform before injection molding, the insert pin supports the insert below the pin, the insert pin on the female die is arranged above the material belt, and when the die is closed, the insert pin and the insert pin are matched to break the material belt, so that the material belt between the pins is removed after injection molding is completed.

Description

Joint injection molding mold

Technical Field

The utility model relates to an injection moulding mould especially relates to a connect injection moulding mould.

Background

In some connectors, such as a brushless motor substrate connector for an automobile, a plurality of pins are provided, and the pins are connected with each other through a material belt. Part of the periphery of the stitch is formed by injection molding, and the stitch is partially wrapped in the plastic part. Because the material belt is arranged between the stitches for conveniently placing the stitches before injection molding, the material belt is not needed after injection molding, otherwise, the functional characteristics of the product can be influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a connect injection moulding mould can get rid of the material area between the stitch after the completion of moulding plastics.

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

the utility model provides a connect injection moulding mould, it includes:

the male die is provided with a placing platform for placing a plurality of pins in the connector, and is also provided with an insert which supports the pins below;

the female die is provided with an insert needle, the insert needle corresponds to the material belt among the pins, the insert needle is provided with a cutting end, and the cutting end is positioned above the material belt;

when the mold is closed, the insert and the insert pin are matched to break the material belt.

Optionally, the length direction of the insert pin is on a vertical line.

Optionally, the insert pins correspond to the tapes one to one.

Optionally, the insert pin has a hardness greater than a hardness of the insert.

Optionally, a groove for embedding the pin is arranged on the placing platform.

Optionally, an avoiding hole corresponding to the insert pin is formed in the insert.

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 connect injection moulding mould owing to set up the mold insert on public mould, has set up the inlay needle on the master model, before moulding plastics, the place the platform is put into to the stitch, and the mold insert is at stitch below bearing mold insert, and the inlay needle setting on the master model is in the top in material area, and when the compound die, the mold insert breaks with inlaying the cooperation of needle and taking the material area to after the completion of moulding plastics, the material area between the stitch is got rid of promptly.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration 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 drawn to scale. In the drawings:

FIG. 1 is a perspective view of a connector with a tape between the stitches of the connector prior to die modification;

FIG. 2 is a perspective view of another connector made using the injection mold of the preferred embodiment of the present invention, with the material tape between the pins removed after injection molding;

FIG. 3 is a schematic perspective view of a male mold of a preferred embodiment of the joint injection mold of the present invention;

FIG. 4 is an enlarged schematic view of the cavity A of FIG. 3;

FIG. 5 is an enlarged schematic view at B of FIG. 4;

FIG. 6 is a schematic view of the placement of pins in the mold cavity prior to injection molding;

FIG. 7 is a schematic view of the insert pin cutting the strip when the female mold and the male mold are closed;

FIG. 8 is a schematic diagram of a needle cutting strip;

wherein the reference numerals are as follows:

1. a male die;

2. a female die;

3. placing a platform;

4. an insert;

5. inserting a needle;

6. cutting the end;

7. a groove;

8. avoiding holes;

9. a cavity;

10. a joint;

11. a plastic portion;

12. a stitch;

13. a material belt.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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, the connector 10 is a substrate connector of a brushless motor of an automobile, and the connector 10 includes a plurality of pins 12 and a plastic portion 11 wrapping the outer periphery of the pins 12. The plastic part 11 is made by injection moulding, and the pins 12 are placed in the mould cavity before injection moulding. The material belt 13 is arranged between the stitches 12, the material belt 13 is used for conveniently placing the stitches 12 into the cavity, integrity of the stitches 12 can be guaranteed, and the material belt 13 is an unnecessary part after injection molding is completed, so that attractiveness of the connector 10 is affected to a certain extent. The strip of material 13 therefore needs to be removed to form the connector 10 of the type shown in figure 2.

The joint 10 of fig. 2 is made using the joint injection mold of the preferred embodiment of the present invention, and after the injection molding is completed, the material tape 13 is removed.

The utility model discloses a joint injection moulding mould includes public mould 1 and master model 2 (refer to fig. 1, fig. 7).

As shown in fig. 3, four identical cavities 9 are provided in the male mold 1.

Referring to fig. 4, this figure is an enlarged schematic view of the cavity a in fig. 3, a placing platform 3 is disposed in the cavity, and the placing platform 3 is used for placing the pins 12. The placing platform 3 is provided with a groove 7, and the groove 7 is used for embedding the pin 12, so as to stabilize the pin 12, as shown in fig. 6. An insert 4 is also arranged in the cavity, and one function generated by the insert 4 is to place the pin 12.

As shown in fig. 5, which is an enlarged schematic view of a portion B of fig. 4, three avoiding holes 8 are formed in the insert 4, and the avoiding holes 8 correspond to positions of the material tape 13 between the stitches 12. As shown in fig. 6, the stitches 12 are placed in the mould cavity, the strip of material 13 between the stitches 12 ensures the integrity of the stitches 12, and the relief holes 8 in fig. 5 are provided below the strip of material 13.

As shown in fig. 7, the master model 2 is provided with three insert pins 5, and the insert pins 5 correspond to the tapes 13 one by one. The lower end of the insert pin 5 is provided with a cutting end 6, and the cutting end 6 can be a blade, a heat treatment end or no special treatment, and is mainly used for cutting the material belt 13. The front cutting end 6 of the die assembly is positioned above the material belt 13, and when the female die 2 and the male die 1 are matched, the insert pin 5 extrudes the material belt 13 so as to break the material belt 13. The insert pin 5 has a hardness greater than that of the insert 4, so that the insert pin 5 can smoothly cut the tape 13.

The three pins 5 of this example are independent of each other, which facilitates replacement of only the damaged pin when damaged, thereby reducing maintenance costs.

The insert pins 5 of this example are arranged in a vertical line in the longitudinal direction, so that the insert pins 5 can cut the tape 13 more strongly.

As shown in fig. 8, according to the cutting principle, when the mold is closed, for example, c on the left side, the male mold moves upward, so that the insert 4 carries the pins 12 to move upward until the insert 5 abuts against the strip 13, at which time the male mold continues to move upward, and the insert 5 presses the strip 13 to break the strip 13 from the pins 12, for example, d on the right side. Followed by an injection molding operation. After the injection moulding is completed, the strip of material 13 has been cut off from the stitches 12.

The avoiding hole 8 in the insert 4 can avoid the strip 13 and the insert pin 5, so that the insert pin 5 can break the strip 13 more smoothly.

As described above, in the joint injection mold of the present embodiment, since the insert 4 is provided on the male mold 1 and the insert pin 5 is provided on the female mold 2, the insert 4 pushes the pin 12 upward during mold closing, the insert pin 5 is used as a main assist force for cutting the tape 13, so that the tape 13 is punched during mold closing, and the tape 13 is cut off from the pin 12 after the injection is completed.

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, so as not to 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 by the protection scope of the present invention.

Claims

1. A joint injection molding mold is characterized by comprising:

the connector comprises a male die (1), wherein a placing platform (3) used for placing a plurality of pins in the connector is arranged on the male die (1), an insert (4) is further arranged on the male die (1), and the pins are supported below the insert (4);

the female die (2) is provided with insert needles (5), the insert needles (5) correspond to the material belt among the stitches, the insert needles (5) are provided with cutting ends (6), and the cutting ends (6) are located above the material belt;

when the die is closed, the insert (4) is matched with the insert pin (5) to break the material belt.

2. The joint injection molding mold according to claim 1, wherein: the length direction of the insert pin (5) is on a vertical line.

3. The joint injection molding mold according to claim 1, wherein: the insert pins (5) correspond to the material belts one by one.

4. The joint injection molding mold according to claim 1, wherein: the hardness of the insert pin (5) is greater than that of the insert (4).

5. The joint injection molding mold according to claim 1, wherein: the placing platform (3) is provided with a groove (7) for embedding the pins.

6. The joint injection molding mold according to claim 1, wherein: the insert (4) is provided with an avoiding hole (8) corresponding to the insert pin (5).