CN110774540B

CN110774540B - Injection mold of self-adaptation jump ring position circle

Info

Publication number: CN110774540B
Application number: CN201911195456.7A
Authority: CN
Inventors: 高克火
Original assignee: Yuhuan Auto Parts Industry Co ltd
Current assignee: Yuhuan Auto Parts Industry Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-08-20
Anticipated expiration: 2039-11-28
Also published as: CN110774540A

Abstract

The invention relates to an injection mold of a self-adaptive clamp spring positioning ring, which comprises a movable mold and a fixed mold, wherein a second cavity is formed in the movable mold, a first cavity is formed in the fixed mold, the second cavity and the first cavity are both semicircular, the movable mold further comprises a cylindrical sliding block, the sliding block is positioned in a circular cavity formed by the second cavity and the first cavity in mold closing, a positioning ring mold cavity is formed by the inner wall of the second cavity, the inner wall of the first cavity and the side wall of the sliding block together, and molten plastic enters the positioning ring mold cavity through various runners and gates. Compared with the prior art, the invention has the advantages that the self-adaptive clamp spring positioning ring can be formed by one-time injection molding, the manufacturing procedure is simplified, the cost is reduced, and the production efficiency is improved.

Description

Injection mold of self-adaptation jump ring position circle

Technical Field

The invention relates to an injection mold, in particular to an injection mold of a self-adaptive clamp spring positioning ring.

Background

The circlip is also called retainer ring or retainer ring, belongs to a kind of fastener, and is used for being installed in the shaft groove or hole groove of machine and equipment, and plays the role of preventing the axial movement of the parts on the shaft or hole. At present, in the widely used snap spring, the structure is single, and the function is single. And the clamp spring is directly fixed on the workpiece, so that the requirement on the precision of the workpiece is high, and the clamp spring is difficult to operate. Therefore, the clamp spring is required to be designed to be matched with the clamp spring, and the clamp spring can be indirectly arranged on a workpiece. Patent CN201820617440.5 discloses auto-lock fixing device of quick connector, wherein the position collar 6 of this jump ring of jump ring and cooperation installation including novel structure, as shown in figure 6, 7, 8, it has jump ring constant head tank 61 and supplementary jump ring constant head tank 62 to make on the position collar 6, jump ring constant head tank 61 wholly is approximately in the C font, and by sharp hook holding ring 64, fretwork ring 65 and spacing ring 66 are constituteed, the system has location step 67 on the sharp hook holding ring 64, supplementary jump ring constant head tank 62 is the same with jump ring constant head tank 61's structure, the bulge loop 63 has still been made to the outer wall of position collar 6, position collar 6 makes the loading and unloading of jump ring more simple and convenient. However, the positioning ring has a complex structure, the existing mold cannot be formed at one time, multiple times of manual processing are needed, the manufacturing process is complex, and the cost is high.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an injection mold capable of molding the self-adaptive clamp spring positioning ring at one time.

The technical scheme adopted by the invention for realizing the purpose is as follows:

the injection mold of self-adaptation jump ring position circle, including movable mould and cover half, the system has the second die cavity on the movable mould, the system has first die cavity on the cover half, the second die cavity with first die cavity all is semicircular, the movable mould still includes columniform slider, during the compound die the slider is located the circular die cavity that second die cavity and first die cavity enclose, the inner wall of second die cavity, the inner wall of first die cavity with the lateral wall of slider constitutes the position circle die cavity jointly, and molten plastics enters into through each runner and runner in the position circle die cavity.

As a further optimization of the above technical solution: the both sides of second die cavity inner wall all make twice arc chimb, and four arc chimbs are two rows and are listed as, bilateral symmetry sets up, and four arc chimbs are close to the one end at second die cavity inner wall middle part all makes the breach.

As a further optimization of the above technical solution: the inner wall of the first cavity is provided with two semicircular convex edges, the middle of each semicircular convex edge is provided with an arc-shaped first groove, the center of each first groove is provided with a convex block, and the convex blocks on the two semicircular convex edges extend outwards to the upper surface and the lower surface of the first cavity respectively.

As a further optimization of the above technical solution: when the die is closed, the semicircular convex edge is connected with the arc convex edge, and one side surface of the arc convex edge, one side surface of the semicircular convex edge and one side surface of the convex block are tightly attached to the side wall of the sliding block.

As a further optimization of the above technical solution: the inside of movable mould runs through the system and has the passageway, the opening of passageway one end wherein is located the middle part of second die cavity, still be equipped with the ejector pin in the passageway, the separation of mould plastics back movable mould and cover half that finishes, the slider is loosed the core, the ejector pin is followed the product is ejecting in the second die cavity.

As a further optimization of the above technical solution: the middle part of the positioning ring die cavity is provided with a circular second groove, and the second groove is tightly attached to one of the semicircular convex edges.

As a further optimization of the above technical solution: the inner side of the other semicircular convex edge is also connected with a positioning strip, the surface of the positioning strip and the groove bottom of the first groove are positioned on the same plane, and two end faces of the positioning strip are both made into inclined planes.

Compared with the prior art, the invention has the advantages that the self-adaptive clamp spring positioning ring can be formed by one-time injection molding, the manufacturing procedure is simplified, the cost is reduced, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a second cavity according to the present invention.

Fig. 3 is a schematic perspective view of a first cavity according to the present invention.

Fig. 4 is a schematic structural view of a second cavity in the invention.

Fig. 5 is a schematic structural view of a first cavity in the present invention.

FIG. 6 is a schematic structural view of an injection molded cage of the present invention.

FIG. 7 is a cross-sectional structural view of the cage of FIG. 6.

Fig. 8 is a schematic structural diagram of the snap spring positioning groove in fig. 6.

Detailed Description

The invention is further described with reference to the following figures and detailed description. As shown in fig. 1-8, the injection mold of the self-adaptive snap spring retainer ring comprises a movable mold 1 and a fixed mold 2, wherein a second cavity 11 is formed in the movable mold 1, a first cavity 21 is formed in the fixed mold 2, the second cavity 11 and the first cavity 21 are both semicircular, the movable mold 1 further comprises a cylindrical sliding block 7, the sliding block 7 is located in a circular cavity formed by the second cavity 11 and the first cavity 21 in the mold closing process, the inner wall of the second cavity 11, the inner wall of the first cavity 21 and the side wall of the sliding block 7 jointly form a retainer ring mold cavity 3, and molten plastic enters the retainer ring mold cavity 3 through each runner 4 and a gate 5. Fig. 1 is only one example of the arrangement of the present invention, and fig. 1 omits a part of the movable mold 1 and the slide 7 for easy observation.

In the above technical scheme: as shown in fig. 2 and 4, two arc flanges 111 are manufactured on two sides of the inner wall of the second cavity 11, the four arc flanges 111 are arranged in two rows and two columns and are arranged in bilateral symmetry, and the four arc flanges 111 are close to one end of the middle part of the inner wall of the second cavity 11 and are provided with a notch 1111.

In the above technical scheme: as shown in fig. 3 and 5, two semicircular convex edges 211 are formed on the inner wall of the first cavity 21, an arc-shaped first groove 2111 is formed in the middle of each semicircular convex edge 211, a protrusion 2112 is formed in the center of each first groove 2111, and the protrusions 2112 on the two semicircular convex edges 211 extend outwards to the upper surface and the lower surface of the first cavity 21 respectively. When the die is closed, the semicircular convex edge 211 is connected with the arc convex edge 111, and one side surface of the arc convex edge 111, one side surface of the semicircular convex edge 211 and one side surface of the convex block 2112 are tightly attached to the side wall of the sliding block 7. The semicircular convex edge 211 and the arc convex edge 111 correspondingly form a hollow ring 65, the first groove 2111 correspondingly forms a limit ring 66, the bump 211 enables the middle of the limit ring 66 to be isolated, a gap between two arc convex edges 111 in the same row correspondingly forms a pointed hook positioning ring 64, and the notch 1111 correspondingly forms a positioning step 67.

In the above technical scheme: the middle part of the positioning ring die cavity 3 is provided with a circular second groove 31, the second groove 31 is tightly attached to one of the semicircular convex edges 211, and the second groove 31 correspondingly forms a convex ring 63.

In the above technical scheme: the inner side of the other semicircular convex edge 211 is further connected with a positioning strip 212, the surface of the positioning strip 212 and the groove bottom of the first groove 2111 are located on the same plane, and two end faces of the positioning strip 212 are made into inclined planes 2121.

In the above technical scheme: a channel 12 is formed in the movable mold 1 in a penetrating manner, and an opening at one end of the channel 12 is located in the middle of the second cavity 11. The channel 12 is used for venting the cage cavity 3 during injection molding. And an ejector rod is further arranged in the channel 12, the fixed mold and the movable mold are separated after injection molding is finished, the slide block 7 looses a core, and finally the ejector rod ejects a product out of the second cavity 11.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concept of the present invention should fall within the scope of the present invention.

Claims

1. The injection mold of the self-adaptive clamp spring positioning ring comprises a movable mold (1) and a fixed mold (2), wherein a second cavity (11) is formed in the movable mold (1), a first cavity (21) is formed in the fixed mold (2), and the injection mold is characterized in that the second cavity (11) and the first cavity (21) are both semicircular, the movable mold (1) further comprises a cylindrical sliding block (7), the sliding block (7) is positioned in a circular cavity formed by enclosing the second cavity (11) and the first cavity (21) during mold closing, the inner wall of the second cavity (11), the inner wall of the first cavity (21) and the side wall of the sliding block (7) jointly form a positioning ring mold cavity (3), and molten plastic enters the positioning ring mold cavity (3) through each runner (4) and a pouring gate (5);

two sides of the inner wall of the second cavity (11) are respectively provided with two arc-shaped convex edges (111), four arc-shaped convex edges (111) are symmetrically arranged in two rows and two columns in a left-right mode, and one end, close to the middle of the inner wall of the second cavity (11), of each arc-shaped convex edge (111) is provided with a notch (1111);

the inner wall of the first cavity (21) is provided with two semicircular convex edges (211), the middle part of each semicircular convex edge (211) is provided with an arc-shaped first groove (2111), the center of each first groove (2111) is provided with a convex block (2112), and the convex blocks (2112) on the two semicircular convex edges (211) respectively extend outwards to the upper surface and the lower surface of the first cavity (21);

when the die is closed, the semicircular convex edge (211) is connected with the arc-shaped convex edge (111), and one side surface of the arc-shaped convex edge (111), one side surface of the semicircular convex edge (211) and one side surface of the convex block (2112) are tightly attached to the side wall of the sliding block (7);

the inside of movable mould (1) is run through the system and is had passageway (12), passageway (12) wherein the opening of one end is located the middle part of second die cavity (11), still be equipped with the ejector pin in passageway (12), the separation of the back movable mould and cover half that finishes of moulding plastics, slider (7) are loosed the core, the ejector pin is followed the product is ejecting in second die cavity (11).

2. The injection mold of the self-adaptive clamp spring positioning ring according to claim 1, wherein a circular second groove (31) is formed in the middle of the positioning ring mold cavity (3), and the second groove (31) is tightly attached to one of the semicircular convex edges (211).

3. The injection mold of the self-adaptive clamp spring positioning ring according to claim 2, wherein a positioning strip (212) is further connected to the inner side of the other semicircular convex edge (211), the surface of the positioning strip (212) and the groove bottom of the first groove (2111) are located on the same plane, and two end faces of the positioning strip (212) are made into inclined planes (2121).