CN111421763A

CN111421763A - Error-proofing structure for injection mold

Info

Publication number: CN111421763A
Application number: CN202010226656.0A
Authority: CN
Inventors: 周超群; 陈涛; 王正雨; 陈明; 杨臣
Original assignee: Wuhu Hengxin Auto Interior Trim Co ltd
Current assignee: Wuhu Hengxin Auto Interior Trim Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-07-17

Abstract

The invention provides a mistake proofing structure for an injection mold, and relates to the field of household kitchens. This a mistake proofing structure for injection mold, including mould main part, first plastic body, second plastic body, the surface of mould main part is provided with first inlay needle and second and inlays the needle, the first interior external diameter of inlaying the needle is different with the second, and the first interior external diameter of inlaying the needle all is less than the second and inlays the interior external diameter of needle, the surface of mould main part just is located the first one side fixedly connected with mistake proofing needle of inlaying the needle, the inside of first plastic body is provided with first metal insert, and the inside of second plastic body is provided with second metal insert. Through the design of mistake proofing hole and mistake proofing needle for the mould effectively hinders the installation of other specification inserts when adding man-hour of inserts, avoids the installation dislocation, and can not produce the pleasing to the eye degree that the product was influenced to the heterosexual structure, has effectively avoidd prior art's shortcoming.

Description

Error-proofing structure for injection mold

Technical Field

The invention relates to the technical field of insert processing, in particular to a mistake proofing structure for an injection mold.

Background

With the popularization of plastic products, the plastic products are provided with fastening pieces, the plastic strength and rigidity are weak, the fastening pieces can only bear 5 +/-1 N.m of torque, if the torque of the used standard parts is larger than 5 +/-1 N.m, the plastic can have the phenomenon of rupture and crushing in use, and when the plastic is used at the present stage, metal inserts are added in the areas where the standard parts are arranged to improve the local strength and prevent the phenomenon of crushing.

However, if a plurality of specifications of metal inserts are involved in one product, the inserts are usually made into special-shaped structures in the conventional scheme, for example, the inserts with different specifications are made into a triangular shape, an oval shape and the like, which are convenient to distinguish, but the mode still causes fatigue installation errors in mechanical operation, and the plurality of special-shaped structures affect the product appearance, so that an error-proof scheme is needed to avoid the errors.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an error-proof structure for an injection mold, which solves the problems that when the product is subjected to injection molding, standard parts with different specifications sometimes exist in the product, and inserts with different specifications are needed, and in the existing scheme, if metal inserts with various specifications are involved in a pair of molds, although the inserts with different specifications are made into a triangle shape, an oval shape and the like, the inserts are convenient to distinguish, the mode still causes fatigue installation errors in mechanical operation, and the attractiveness of the product is influenced by various special-shaped structures.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a mistake proofing structure for injection mold, includes mould main part, first plastic body, second plastic body, the surface of mould main part is provided with first inlay needle and second and inlays the needle, the first interior external diameter that inlays the needle with the second is different, and the first interior external diameter that inlays the needle all is less than the second and inlays the interior external diameter of needle, the surface of mould main part just is located the first one side fixedly connected with mistake proofing needle of inlaying the needle, the inside of first plastic body is provided with first metal insert, and the inside of second plastic body is provided with second metal insert.

Preferably, the specifications of the first metal insert and the second metal insert are different, and the inner diameter and the outer diameter of the second metal insert are both larger than those of the first metal insert.

Preferably, the surface of the first plastic body and one side of the first metal insert are provided with error-proof holes, and the positions and structures of the error-proof holes are matched with the error-proof needles.

Preferably, the center distance between the position of the error-proof pin and the first insert pin is greater than the outer diameter radius of the first metal insert and less than the outer diameter radius of the second metal insert.

The working principle is as follows: when the first plastic body 5 is matched with the first metal insert 6, the inner diameter and the outer diameter of the first metal insert 6 are smaller than those of the second metal insert 9, so that the problem that the first metal insert 6 is wrongly mounted on the second insert pin 3 does not exist, when the first metal insert 6 is mounted on the first insert pin 2, the distance from the error-proof pin 4 to the center of the first insert pin 2 is larger than the outer diameter of the first metal insert 6, and the error-proof hole 7 is matched with the error-proof pin 4, so that the mounting of the first metal insert 6 cannot be influenced, and when the second metal insert 9 is wrongly mounted on the first insert pin 2, the mounting of the second metal insert 9 cannot be realized due to the fact that the distance from the error-proof pin 4 to the center of the first insert pin 2 is smaller than the outer diameter of the second metal insert 9.

(III) advantageous effects

The invention provides a mistake proofing structure for an injection mold. The method has the following beneficial effects:

1. through the design of mistake proofing hole and mistake proofing needle for the mould effectively hinders the installation of other specification inserts when the man-hour of inserts, avoids the installation dislocation, and can not produce the pleasing to the eye degree that the product was influenced to the heterosexual structure, consequently this patent has effectively avoidd prior art's shortcoming.

2. Through reasonable structural design, even the workman produces tiredly also can not appear the phenomenon of misloading when using, and then the operation of being convenient for improves work efficiency.

Drawings

FIG. 1 is a schematic view of the mold structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the plastic body and the metal insert;

fig. 3 is a schematic view of the internal structure of another plastic body and metal insert of the present invention.

Wherein, 1, a mould main body; 2. a first insert pin; 3. a second insert pin; 4. preventing wrong needles; 5. a first plastic body; 6. a first metal insert; 7. a mistake proofing hole; 8. a second plastic body; 9. a second metal insert.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 3, an embodiment of the present invention provides an error-proofing structure for an injection mold, which includes a mold main body 1, a first plastic main body 5, and a second plastic main body 8, wherein a first insert pin 2 and a second insert pin 3 are disposed on a surface of the mold main body 1, so as to meet the requirement of a pair of molds for processing metal parts of multiple specifications, inner and outer diameters of the first insert pin 2 and the second insert pin 3 are different, so as to mount the metal parts of different specifications, and an inner diameter and an outer diameter of the first insert pin 2 are both smaller than an inner diameter and an outer diameter of the second insert pin 3, an error-proofing pin 4 is fixedly connected to a surface of the mold main body 1 and located on one side of the first insert pin 2, so as to prevent an error-mounting phenomenon, a first metal insert 6 is disposed inside the first plastic main body 5, and a second metal insert 9 is.

The specifications of the first metal insert 6 and the second metal insert 9 are different, and the inner diameter and the outer diameter of the second metal insert 9 are both larger than those of the first metal insert 6.

Mistake proofing hole 7 has been seted up on the surface of first plastic body 5 and the one side that is located first metal insert 6, and the position and the structure in mistake proofing hole 7 all mutually support with mistake proofing needle 4, the cooperation installation of the first metal insert 6 of being convenient for and first inlay needle 2.

The distance from the position of the mistake proofing needle 4 to the first insert needle 2 at the center is larger than the outer diameter radius of the first metal insert 6 and smaller than the outer diameter radius of the second metal insert 9, so that the installation of the first metal insert 6 is not influenced, and the mistake proofing effect is realized on the installation of the second metal insert 9.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mistake proofing structure for injection mold, includes mould main part (1), first plastic body (5), second plastic body (8), its characterized in that: the surface of mould main part (1) is provided with first inlay needle (2) and second and inlays needle (3), first inlay needle (2) and second inlay the inside and outside footpath of needle (3) different, and the inside and outside footpath of first inlaying needle (2) all is less than the inside and outside footpath of second inlay needle (3), the surface of mould main part (1) just is located one side fixedly connected with mistake proofing needle (4) of first inlaying needle (2), the inside of first plastic body (5) is provided with first metal insert (6), and the inside of second plastic body (8) is provided with second metal insert (9).

2. A mistake proofing structure for an injection mold according to claim 1, wherein: the specifications of the first metal insert (6) and the second metal insert (9) are different, and the inner diameter and the outer diameter of the second metal insert (9) are both larger than those of the first metal insert (6).

3. A mistake proofing structure for an injection mold according to claim 1, wherein: mistake proofing hole (7) have been seted up on the surface of first plastic body (5) and the one side that is located first metal insert (6), the position and the structure in mistake proofing hole (7) all mutually support with mistake proofing needle (4).

4. A mistake proofing structure for an injection mold according to claim 1, wherein: the distance between the position of the mistake-proofing needle (4) and the first insert needle (2) at the center is larger than the outer diameter radius of the first metal insert (6) and smaller than the outer diameter radius of the second metal insert (9).