CN214111281U

CN214111281U - Insertion positioning piece of injection mold and injection mold

Info

Publication number: CN214111281U
Application number: CN202022950854.XU
Authority: CN
Inventors: 李明辉; 潘林忠; 蔡栋晖
Original assignee: Megaforce Shanghai Electronic & Plastic Co ltd
Current assignee: Megaforce Shanghai Electronic & Plastic Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-09-03
Anticipated expiration: 2030-12-11

Abstract

The utility model relates to an insertion positioning piece of an injection mold and the injection mold, which comprises a male mold insert and a female mold insert, wherein the end part of the male mold insert is provided with an insertion column, and the end part of the female mold insert is correspondingly provided with an insertion hole; the cross section of the insertion column is a regular polygon, the aperture of the insertion hole is a regular polygon, and the insertion column can be inserted into the insertion hole in a matched mode. The regular polygonal insertion columns are matched with the regular polygonal insertion through holes, so that the insertion through columns are prevented from being excessively stressed in the insertion through holes, the failure rate of equipment is reduced, the service life of the equipment is ensured, and the maintenance frequency is reduced; the male mold insert and the female mold insert are positioned more accurately and stably after the shape is changed, the stable positioning can improve the dimensional stability of the injection molding product, and the poor output is reduced.

Description

Insertion positioning piece of injection mold and injection mold

Technical Field

The utility model relates to an injection mold field, concretely relates to injection mold's plug-in setting element and injection mold.

Background

In the processing process of an injection product, after the male die and the female die are closed, injecting rubber fluid or plastic fluid into the die, solidifying the fluid after the fluid is filled in the die, and separating the male die from the fixed die to obtain the injection product; in order to accurately mold the inner part of a product and the male mold and the female mold, a male mold insert is generally arranged in the male mold, a female mold insert is arranged in the female mold, an insertion column is generally arranged at the end part of the male mold insert, an insertion through hole is arranged at the end part of the corresponding female mold insert, on one hand, the shape of the male mold insert and the shape of the female mold insert enable the inner shape of an injection molded product to be molded, and on the other hand, the male mold insert is matched with the female mold insert to ensure the accurate mold closing of the male mold and the female mold.

Prior art for example, utility model patent No. 201821227704.2 discloses an injection mold, comprising a female mold and a male mold arranged oppositely, and a mold core arranged in the female mold and the male mold, wherein the mold core comprises two slide block inserts, a female mold insert, a male mold insert and a top block, the two slide block inserts are oppositely arranged, each slide block insert comprises a top surface and a bottom surface which are oppositely arranged, the mother mould insert is contacted with the top surfaces of the two slide block inserts, the top block is contacted with the bottom surfaces of the two slide block inserts, the male mold insert is arranged in the top block in a penetrating mode and extends to a position between the two slide block inserts, the female mold insert and the male mold insert jointly form a cavity for molding a product, the product is molded in the cavity in an injection mode, and the top block is used for ejecting the product.

In the practical production application, the inserting column is a cylindrical inserting column, the inserting hole is a cylindrical inserting hole, the cylindrical inserting column of the male mold insert is matched with the cylindrical inserting hole of the female mold insert, and when the cylindrical inserting column of the male mold insert is inserted into the cylindrical inserting hole of the female mold insert, the cylindrical inserting column is prone to breakage and abrasion due to uneven stress, and the failure rate is high.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an injection mold inserts setting element and injection mold inserts the fenestrate shape of inserting of post and female mould through changing the male mould insert, avoids inserting the post and inserts the downthehole atress of inserting and too concentrate, reduces the fault rate of equipment, guarantees equipment life, the technical purpose of the utility model is realized through following technical scheme:

an insertion positioning piece of an injection mold comprises a male mold insert and a female mold insert, wherein an insertion column is arranged at the end part of the male mold insert, and an insertion through hole is correspondingly arranged at the end part of the female mold insert; the cross section of the insertion column is a regular polygon, the aperture of the insertion hole is a regular polygon, and the insertion column can be inserted into the insertion hole in a matched mode.

Furthermore, the section of the insertion column is regular triangle, and the aperture of the insertion hole is regular triangle.

Furthermore, the male mold insert is in a pagoda shape, and the insertion column is arranged at the top of a pagoda of the pagoda-shaped male mold insert.

An injection mold comprises a male mold and a female mold, wherein a male mold insert is arranged in the male mold, a female mold insert is arranged in the female mold, the male mold insert is in a pagoda shape, an insertion column with a regular polygon-shaped cross section is arranged at the end of the male mold insert, an insertion hole with a regular polygon-shaped aperture is arranged at the end of the corresponding female mold insert, the insertion column is matched with the insertion hole, the insertion column is preferably a regular rhombus column, and the aperture of the insertion hole is preferably a regular triangle.

Further, the pagoda-shaped bottom of the male mold insert is mounted in the male mold.

Furthermore, the male die is a movable die, the female die is a fixed die, the ejector pin is further arranged in the male die, and the formed injection product is pushed away from the male die through the ejector pin, so that the demolding is facilitated.

Compared with the prior art, the utility model has the advantages that the regular polygon insertion column is matched with the regular polygon insertion hole to avoid the excessive concentration of the stress when the insertion column is inserted into the insertion hole, thereby reducing the failure rate of the equipment, ensuring the service life of the equipment and reducing the maintenance frequency; the male mold insert and the female mold insert are positioned more accurately and stably after the shape is changed, the stable positioning can improve the dimensional stability of the injection molding product, and the poor output is reduced.

Drawings

Fig. 1 is a schematic diagram of a conventional male mold insert structure.

Fig. 2 is a schematic view of a conventional master insert structure.

Fig. 3 is a schematic diagram of the male mold insert structure in this embodiment.

Fig. 4 is a schematic diagram of a structure of the mother mold insert in the present embodiment.

Fig. 5 is a schematic view showing the use of the male mold insert and the female mold insert in this embodiment.

FIG. 6 is a schematic view of the injection mold of the present embodiment.

In the figure, 1, a male mold insert; 2. a cylindrical insertion post; 3. inserting a mother mould; 4. a cylindrical insertion hole; 5. the regular triangle is inserted through the column; 6. inserting a hole in a regular triangle shape; 7. injection molding a product; 8. a male die; 9. a female die; 10. a thimble; 11. and (5) injection molding the product forming area.

Detailed Description

The technical solution of the present invention is further described below with reference to the following embodiments:

in the production process of a traditional injection product, after a male die and a female die are closed, fluid rubber or plastic is filled into the die, and after the fluid is solidified and formed, the male die and the female die are separated to obtain the injection product; in order to accurately mold the inner part of a product and match the male mold and the female mold, a male mold insert is generally arranged in the male mold, a female mold insert is arranged in the female mold, an insertion column is generally arranged at the end part of the male mold insert, an insertion through hole is arranged at the end part of the corresponding female mold insert, the conventional male mold insert 1 is shown in figure 1, a female mold insert 3 is shown in figure 2, a cylindrical insertion column 2 is arranged at the end part of the male mold insert 1, and a cylindrical insertion through hole 4 is correspondingly arranged at one end of the female mold insert 3; in the use, the external diameter of cylindrical insertion column 2 is generally less than the internal diameter of cylindrical insertion hole 4, and the contact surface of cylindrical insertion column 2 and cylindrical insertion hole 4 is mostly linear, easily causes the atress on cylindrical insertion column 2 to concentrate, and cylindrical insertion column 1 is easy to break, wearing and tearing.

In order to solve the problem, the embodiment provides an insertion positioning element of an injection mold, as shown in fig. 3-5, which includes a male mold insert 1 and a female mold insert 3, wherein an insertion column is disposed at an end of the male mold insert 1, and an insertion through hole is correspondingly disposed at an end of the female mold insert 3; the cross-section of inserting the post is regular polygon, and the aperture of inserting the perforation is regular polygon, and it can cooperate and insert in the perforation to insert the post, and the cross-section is regular polygon's the post of inserting and the aperture is regular polygon's the hole cooperation of inserting and can guarantee to insert the post and insert and be the face contact between the perforation, avoids inserting the post atress too concentrated and takes place fracture, wearing and tearing. The regular polygon may be a regular triangle, a regular quadrangle, a regular pentagon, a regular hexagon, etc., and it is preferable that the regular triangle insertion column 5 and the regular triangle insertion hole 6 are matched in this embodiment.

The male mold insert 1 is in a pagoda shape, the regular triangle insertion column 5 is installed at the top of the pagoda shape, the pagoda-shaped male mold insert 1 is convenient to demold, after the injection molding product 7 after injection molding is finished is molded, the pagoda-shaped male mold insert 1 penetrates through the injection molding product 7, and demolding of the pagoda-shaped male mold insert 1 is convenient to finish from one side during demolding.

The embodiment further provides an injection mold, as shown in fig. 6, which includes a male mold 8 and a female mold 9, the male mold insert 1 is installed in the male mold 8, the female mold insert 3 is installed in the female mold 9, in the embodiment, the male mold 8 is a movable mold, the female mold 9 is a fixed mold, when the male mold 8 is closed with respect to the female mold 9, the regular triangle insertion post 5 at the end of the male mold insert 1 is inserted into the regular triangle insertion through hole 6, so as to ensure the accurate closing of the male mold 8 and the female mold 9, after the closing of the molds, an injection molding region 11 is formed outside the male mold insert 1 and the female mold insert 3 and inside the male mold 8 and the female mold 9, fluid rubber and fluid plastic are poured into the injection molding region 11, after the molding, the male mold 8 is separated from the female mold 9, a thimble 10 is further arranged in the male mold 8, the thimble 10 can extend and contract with respect to the male mold 8, and the thimble 10 extends out to push out the injection molding 7 with respect to the male mold 8 during demolding, and (5) demolding is finished.

The present embodiment is only for further explanation of the present invention, and is not a limitation of the present invention, and those skilled in the art can make various inventive modifications to the present embodiment as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.

Claims

1. An insertion positioning piece of an injection mold comprises a male mold insert and a female mold insert, and is characterized in that an insertion column is arranged at the end part of the male mold insert, and an insertion through hole is correspondingly arranged at the end part of the female mold insert; the cross section of the insertion column is a regular polygon, the aperture of the insertion hole is a regular polygon, and the insertion column can be inserted into the insertion hole in a matched mode.

2. The inserting positioning piece of an injection mold according to claim 1, wherein the cross section of the inserting column is regular triangle, and the aperture of the inserting hole is regular triangle.

3. An insert positioning element for an injection mold according to claim 1 or 2, wherein the male mold insert is pagoda-shaped, and the insert column is arranged on the top of the pagoda-shaped male mold insert.

4. An injection mold, comprising a male mold and a female mold, wherein a male mold insert is arranged in the male mold, a female mold insert is arranged in the female mold, and the male mold insert and the female mold insert are respectively the male mold insert and the female mold insert as claimed in claim 3.

5. An injection mould according to claim 4, wherein the pagoda-shaped base of the male mould insert is mounted in the male mould.

6. An injection mold according to claim 4, wherein the male mold is a movable mold, the female mold is a fixed mold, and the male mold is further provided with a thimble therein.