CN219838065U - Inner shrinking structure of whole circle back-off - Google Patents

Abstract

The utility model provides a whole circle back-off inward shrinking structure, which comprises a die body, wherein a core is arranged in a movable die plate of the die body, a back-off inward shrinking device is arranged in the core, the back-off inward shrinking device comprises a main body moving block, the side walls of the main body moving block are inclined planes, the small ends of the main body moving block are arranged at the lower upper and the upper ends, the outer sides of the main body moving block are in sliding connection with a group of first inward shrinking blocks and a group of second inward shrinking blocks, the lower sides of the first inward shrinking blocks and the second inward shrinking blocks are provided with a fixed ring, the fixed ring is fixedly connected with the core, the lower side of the fixed ring is provided with a guide ring, the guide ring is connected with the movable die plate, the lower side of the main body moving block is fixedly connected with a driving connecting block, and the driving connecting block is connected with a supporting plate in the die body. The inward shrinking structure has the advantages of high stability, simple structure and low manufacturing cost, and effectively solves the problem that the oblique jacking mechanism cannot be used when the inner ring of the product is a whole-ring reverse buckle.

Description

Inner shrinking structure of whole circle back-off

Technical Field

The utility model relates to the technical field of dies, in particular to a whole-circle back-off inward shrinking structure.

Background

The mould can be divided into a hardware mould and a nonmetal mould according to different molding materials, wherein the nonmetal mould comprises a plastic mould sand mould and the like, the plastic mould is closely related to the life of people along with the rapid development of high polymer plastics, the current common plastic mould structure comprises a two-plate mould, a three-plate mould, a sliding block, an inclined top and other mechanisms, wherein the inclined top of the mould is also called an inclined tip and an inclined top, is a mechanism for forming an internal barb of a product in the mould design, is suitable for the condition of relatively simple barbs, but when the inner ring of the product is a full-circle back-off, the inclined top mechanism cannot be used for providing a full-circle back-off inward shrinkage structure for the inventor.

Disclosure of Invention

The utility model provides a whole circle back-off inward shrinking structure, which comprises a die body, wherein a core is arranged in a movable die plate of the die body, a back-off inward shrinking device is arranged in the core, the back-off inward shrinking device comprises a main body moving block, the side walls of the main body moving block are inclined planes, the small ends of the main body moving block are arranged at the lower upper large ends, the outer sides of the main body moving block are in sliding connection with a group of first inward shrinking blocks and a group of second inward shrinking blocks, the lower sides of the first inward shrinking blocks and the second inward shrinking blocks are provided with fixing rings, the fixing rings are fixedly connected with the core, the lower sides of the fixing rings are provided with guide rings, the guide rings are connected with the movable die plate, the lower sides of the main body moving block are fixedly connected with a driving connecting block, and the driving connecting block is connected with a supporting plate in the die body.

Preferably, the side walls of the main body moving blocks are provided with trapezoid sliding blocks, and the small ends of the trapezoid sliding blocks are connected with the main body moving blocks.

Preferably, the joint surface of the first shrinkage block and the main body moving block is provided with a first trapezoid groove, the first trapezoid groove is in sliding connection with the trapezoid sliding block, the outer side of the first shrinkage block is provided with a first limiting seat, and the first limiting seat is arranged on the upper end surface of the fixing ring.

Preferably, the joint surface of the second inward shrinking block and the main body moving block is provided with a second trapezoidal groove, the second trapezoidal groove is in sliding connection with the trapezoidal sliding block, the outer side of the second inward shrinking block is provided with a second limiting seat, and the second limiting seat is arranged on the upper end surface of the fixing ring.

Preferably, a positioning pin is further arranged at the joint of the fixing ring and the core.

Preferably, the driving connection block is slidably disposed inside the guide ring.

The utility model has the beneficial effects that: the inward shrinking structure has high stability, simple structure and low manufacturing cost, and when the inward shrinking structure is used, the first inward shrinking block and the second inward shrinking block move forwards along the inclined sliding rail by opening the supporting plate and the movable mould plate, so that the inward shrinking aim is fulfilled, and the aim that the oblique jacking mechanism cannot be used when the inner ring of a product is a whole circle of back-off is effectively fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Wherein:

FIG. 1 is a schematic view of the basic structure of the present utility model;

FIG. 2 is a perspective view of the back-off retraction device of the present utility model;

FIG. 3 is a second perspective view of the back-off retraction device of the present utility model;

FIG. 4 is a schematic view of a connection structure of a guide ring and a movable mold plate according to the present utility model;

FIG. 5 is a perspective view of a body moving block according to the present utility model;

FIG. 6 is a side view of a first pinch block of the present utility model;

fig. 7 is a side view of a second necked-in block of the present utility model.

Icon: 1-moving a template; 2-cores; 3-retraction means; 3.1-a body movement block; 3.2-a first retraction block; 3.3-a second retraction block; 3.4-fixing ring; 3.5-guide ring; 3.6-drive connection block; 3.11-trapezoidal sliding blocks; 3.21-a first trapezoidal recess; 3.22-a first limiting seat; 3.31-a second trapezoidal recess; 3.32-a second limit seat; 3.41-locating pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the utility model, are within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. 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.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the present utility model will be understood in detail by those skilled in the art.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a whole circle back-off structure of shrinking includes the mould body, be equipped with core 2 in the movable mould board 1 of mould body, the inside of core 2 is equipped with back-off device 3 that contracts, back-off device 3 includes main part movable block 3.1, the lateral wall of main part movable block 3.1 is the inclined plane, all be equipped with trapezoidal sliding block 3.11 on the inclined plane of main part movable block 3.1, trapezoidal sliding block 3.11 is parallel with the inclined plane of main part movable block 3.1, trapezoidal sliding block 3.11's tip with main part movable block 3.1 is connected, and main part movable block 3.1 tip is under at the upper large end.

The outside sliding connection of main part movable block 3.1 is three first in shrink piece 3.2 and three second in shrink piece 3.3, and first in shrink piece 3.2 and the crisscross setting of second in shrink piece 3.3, the laminating face of first in shrink piece 3.2 and main part movable block 3.1 is equipped with first trapezoidal recess 3.21, first trapezoidal recess 3.21 with trapezoidal sliding block 3.11 sliding connection, the outside of first in shrink piece 3.2 is equipped with first spacing seat 3.22, first spacing seat 3.22 sets up the up end of solid fixed ring 3.4, the laminating face of second in shrink piece 3.3 and main part movable block 3.1 is equipped with second trapezoidal recess 3.31, second trapezoidal recess 3.31 with trapezoidal sliding block 3.11 sliding connection, the outside of second in shrink piece 3.3 is equipped with second spacing seat 3.32, second spacing seat 3.32 sets up the fixed ring 3.4 and just can be assembled to the direction in order to the clearance setting up in two sides can be in the fixed ring 3.4 the direction of freedom of the die set up in order to two sides.

The fixed ring 3.4 is arranged on the lower side of the first inner shrinking block 3.2 and the second inner shrinking block 3.2, the fixed ring 3.4 is fixedly connected with the core 2 through bolts, the connecting part of the fixed ring 3.4 and the core 2 is further provided with a positioning pin 3.41, the positioning pin is additionally arranged to ensure the installation precision of the fixed ring 3.4 better, the whole mechanism can be ensured to run more stably, the guide ring 3.5 is arranged on the lower side of the fixed ring 3.4, the guide ring 3.5 is connected with the movable die plate 1, the lower side of the main body moving block 3.1 is fixedly connected with a driving connecting block 3.6, the driving connecting block 3.6 is slidably arranged in the guide ring 3.5, and the driving connecting block 3.6 is connected with a supporting plate in the die body.

When the sliding support is used, the supporting plate and the movable template are opened, so that the first inward shrinking block and the second inward shrinking block move forwards along the inclined sliding rail, the purpose of inward shrinking is achieved, and the purpose that the oblique jacking mechanism cannot be used when the inner ring of a product is a whole circle of back-off is effectively achieved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (6)

1. The utility model provides a complete circle back-off's structure of shrinking, includes the mould body, be equipped with the core in the movable mould board of mould body, the inside of core is equipped with back-off device, its characterized in that: the back-off internal shrinkage device comprises a main body moving block, the side wall of the main body moving block is an inclined surface, the small end of the main body moving block is arranged at the lower end of the upper large end, a group of first internal shrinkage blocks and a group of second internal shrinkage blocks are connected to the outer side of the main body moving block in a sliding mode, a fixed ring is arranged on the lower side of the first internal shrinkage blocks and the lower side of the second internal shrinkage blocks, the fixed ring is fixedly connected with a mold core, a guide ring is arranged on the lower side of the fixed ring, the guide ring is connected with the movable mold plate, the lower side of the main body moving block is fixedly connected with a driving connecting block, and the driving connecting block is connected with a supporting plate in the mold body.

2. The full-circle back-off retraction structure according to claim 1, wherein: the side wall of the main body moving block is provided with a trapezoid sliding block, and the small end of the trapezoid sliding block is connected with the main body moving block.

3. The full-circle back-off retraction structure according to claim 2, wherein: the laminating face of first shrink piece and main part movable block is equipped with first trapezoidal recess, first trapezoidal recess with trapezoidal sliding block sliding connection, the outside of first shrink piece is equipped with first spacing seat, first spacing seat sets up the up end of solid fixed ring.

4. The full-circle back-off retraction structure according to claim 2, wherein: the laminating face of second shrink piece and main part movable block is equipped with the trapezoidal recess of second, the trapezoidal recess of second with trapezoidal sliding block sliding connection, the outside of second shrink piece is equipped with the spacing seat of second, the spacing seat of second sets up the up end of solid fixed ring.

5. The full-circle back-off retraction structure according to claim 1, wherein: and a locating pin is further arranged at the joint of the fixing ring and the core.

6. The full-circle back-off retraction structure according to claim 1, wherein: the driving connecting block is arranged in the guide ring in a sliding manner.