CN215703322U

CN215703322U - Rear mould and inclined top matching structure capable of preventing mould sticking

Info

Publication number: CN215703322U
Application number: CN202122385963.6U
Authority: CN
Inventors: 宋磊; 何海鸥
Original assignee: Shenzhen Sanjing Mould Co ltd
Current assignee: Shenzhen Sanjing Mould Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-02-01
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a rear mould and lifter matching structure capable of preventing mould sticking, which comprises: the device comprises a rear die, an inclined top, a thimble cover plate and an oil cylinder. The side wall of the forming cavity of the rear die is provided with a sliding groove, the sliding groove and the vertical direction form an included angle, and the inclined top slides in the sliding groove. The side wall of the sliding groove is also provided with a dovetail groove, and the oblique top is also provided with a dovetail slide bar in sliding fit with the dovetail groove. An inclined top seat is vertically fixed on the thimble cover plate, and the bottom end of the inclined top horizontally slides on the inclined top seat. The utility model has the beneficial effects that: through the spacing sliding fit of dovetail and forked tail draw runner between the spout of oblique top and back mould, can not appear oblique top and product glue together and follow the condition that the product moved together, drop easily between oblique top and the product, improved production efficiency greatly, moreover, the product can not the wholesale condition of pulling.

Description

Rear mould and inclined top matching structure capable of preventing mould sticking

Technical Field

The utility model relates to the technical field of dies, in particular to a rear die and lifter matching structure capable of preventing a die from being stuck.

Background

At present, for plastic products with undercut buckling positions, when a mold is designed, a lifter is designed on a rear mold, so that the lifter moves in a direction forming a certain angle with a mold opening direction in a demolding process to eject the products out of the rear mold. After the product is ejected out by the inclined top for a certain distance, the inverted hook buckling position of the product is completely released from the inclined top, and the product and the inclined top are completely demoulded. However, to the plastic product that has great overhead kick and detain the position, the ejection distance of oblique top is very big, and when current oblique top slided ejecting action in the spout of back mould, because do not set up limit structure between the spout of oblique top and back mould, the oblique top is not hard up easily, leads to oblique top and product adhesion together difficult coming off and follow the product and move together, has not only reduced production efficiency, and the product can also be in large batches pull.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a rear mold and lifter matching structure capable of preventing a mold from being stuck.

In order to achieve the above object, the present invention provides a rear mold and lifter matching structure capable of preventing mold sticking, which comprises: the device comprises a rear die for forming a plastic product, an inverted hook buckling position on the side wall of the formed plastic product, an inclined ejector for ejecting the plastic product, an ejector pin cover plate for driving the inclined ejector to eject the plastic product out of the rear die, and an oil cylinder for driving the ejector pin cover plate to move. The side wall of the forming cavity of the rear die is provided with a sliding groove, the sliding groove and the vertical direction form an included angle, and the inclined top slides in the sliding groove. The side wall of the sliding groove is also provided with a dovetail groove, and the oblique top is also provided with a dovetail slide bar in sliding fit with the dovetail groove. An inclined top seat is vertically fixed on the thimble cover plate, and the bottom end of the inclined top horizontally slides on the inclined top seat.

Preferably, the side wall of the forming cavity of the rear die is provided with a draft angle, and the angle of the included angle between the sliding groove and the vertical direction is consistent with the draft angle.

Preferably, the bottom of the rear mold is further provided with an ejection through hole, and the inclined top is further provided with an auxiliary ejecting part sliding in the ejection through hole.

Preferably, the top of the inclined top seat is provided with a clamping groove, and the bottom end of the inclined top is horizontally arranged in the clamping groove in a sliding manner.

Compared with the prior art, the utility model has the beneficial effects that: through the spacing sliding fit of dovetail and forked tail draw runner between the spout of oblique top and back mould, can not appear oblique top and product glue together and follow the condition that the product moved together, drop easily between oblique top and the product, improved production efficiency greatly, moreover, the product can not the wholesale condition of pulling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a plastic product being molded;

FIG. 2 is a schematic perspective view of an embodiment of the present invention;

FIG. 3 is a schematic structural view of the lifter after being engaged with the rear mold in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a rear mold according to an embodiment of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic structural diagram of a lifter according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 2 at B;

the objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The utility model provides a rear mould and lifter matching structure capable of preventing a mould from being stuck.

Referring to fig. 1 to 7, fig. 1 is a schematic structural view of a molded plastic product, fig. 2 is a schematic perspective structural view of an embodiment of the present invention, fig. 3 is a schematic structural view of a lifter and a rear mold according to an embodiment of the present invention, fig. 4 is a schematic structural view of the rear mold according to an embodiment of the present invention, fig. 5 is a partial enlarged view of a portion a in fig. 4, fig. 6 is a schematic structural view of the lifter according to an embodiment of the present invention, and fig. 7 is a partial enlarged view of a portion B in fig. 2.

As shown in fig. 1 to 6, in the embodiment of the present invention, the structure of the rear mold and the lifter of the anti-sticking mold comprises: the ejector pin cover plate comprises a rear die 200 for molding a plastic product 100, an inverted hook position 110 for molding the side wall of the plastic product 100, an inclined top 300 for ejecting the plastic product 100, an ejector pin cover plate 400 for driving the inclined top 300 to eject the plastic product 100 from the rear die 200, and an oil cylinder 500 for driving the ejector pin cover plate 400 to move. The side wall of the molding cavity of the rear mold 200 is provided with a chute 210, the chute 210 and the vertical direction form an included angle, and the lifter 300 slides in the chute 210. The side wall of the sliding groove 210 is further provided with a dovetail groove 211, and the slanted ejecting part 300 is further provided with a dovetail slide bar 310 in sliding fit with the dovetail groove 211. The inclined top seat 600 is vertically fixed on the thimble cover plate 400, and the bottom end of the inclined top 300 horizontally slides on the inclined top seat 600.

When the plastic product 100 is ejected from the molding cavity of the rear mold 200, the oil cylinder 500 drives the ejector pin cover plate 400 and the inclined ejector seat 600 to move together along the vertical mold opening direction, and the movement of the inclined ejector seat 600 drives the inclined ejector 300 to slide in the chute 210. Because the chute 210 and the vertical direction form an included angle, and the bottom end of the inclined top 300 horizontally slides on the inclined top seat 600, the inclined top 300 moves along the direction forming a certain angle with the mold opening direction, so that the plastic product 100 is ejected out of the molding cavity of the rear mold 200, and after the inclined top 300 ejects the product for a certain distance, the inverted hook position 110 of the product is completely released from the inclined top 300, and the complete demolding between the product and the inclined top 300 is realized. Because the dovetail groove 211 has still been seted up on the lateral wall of spout 210, oblique top 300 still is equipped with the forked tail draw runner 310 with dovetail groove 211 sliding fit, make oblique top 300 when spout 210 slides, through the spacing sliding fit of dovetail groove 211 and forked tail draw runner 310 between the spout 210 of oblique top 300 and back mould 200, the condition that oblique top 300 and product adhesion are in the same place and follow the product and move together can not appear, drop easily between oblique top 300 and the product, the production efficiency is greatly improved, moreover, the product can not the pull condition in batches.

Further, in the present embodiment, the sidewall of the molding cavity of the rear mold 200 is provided with draft angles, so that the plastic product 100 is more easily ejected from the molding cavity of the rear mold 200. The angle of the included angle between the chute 210 and the vertical direction is consistent with the draft angle, so that the depth of the chute 210 and the thickness of the lifter 300 are kept consistent in the length direction, and the chute 210 and the lifter 300 are convenient to process.

Further, in this embodiment, as shown in fig. 5, the bottom of the rear mold 200 is further provided with an ejection through hole 220, and the lifter 300 is further provided with an auxiliary ejecting part 320 sliding in the ejection through hole 220, so that the ejection area of the lifter 300 contacting the plastic product 100 is greatly increased, the plastic product 100 is more easily ejected from the molding cavity of the rear mold 200, and the ejection efficiency is greatly improved.

Further, in the present embodiment, as shown in fig. 2 and 7, a clamping groove 610 is formed at the top of the slanted ejecting base 600, and the bottom end of the slanted ejecting base 300 is horizontally slidably disposed in the clamping groove 610, so that the slanted ejecting base 300 is more stable and reliable when sliding in the direction perpendicular to the vertical mold opening direction during ejection.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a can prevent back mould and oblique top cooperation structure of sticking die which characterized in that includes: the device comprises a rear die for molding a plastic product, an inclined top for molding an inverted hook buckling position on the side wall of the plastic product and ejecting the plastic product, a thimble cover plate for driving the inclined top to eject the plastic product from the rear die and an oil cylinder for driving the thimble cover plate to move; a sliding groove is formed in the side wall of the forming cavity of the rear die, the sliding groove is arranged at an included angle with the vertical direction, and the inclined top slides in the sliding groove; a dovetail groove is further formed in the side wall of the sliding groove, and a dovetail sliding strip in sliding fit with the dovetail groove is further arranged on the oblique top; an inclined top seat is vertically fixed on the thimble cover plate, and the bottom end of the inclined top horizontally slides on the inclined top seat.

2. The anti-sticking back mold and lifter matching structure as claimed in claim 1, wherein the side wall of the forming cavity of the back mold is provided with a draft angle, and the included angle of the chute with the vertical direction is consistent with the draft angle.

3. The mold-releasable back mold and lifter structure according to claim 1, wherein the bottom of the back mold is further provided with an ejector through hole, and the lifter is further provided with an auxiliary ejector part sliding in the ejector through hole.

4. The anti-sticking back mold and lifter cooperation structure as claimed in claim 1, wherein the top of the lifter base is provided with a clamping groove, and the bottom end of the lifter is horizontally and slidably arranged in the clamping groove.