CN-224210446-U - Anti-sticking injection mold with front mold ejection assisting structure

CN224210446UCN 224210446 UCN224210446 UCN 224210446UCN-224210446-U

Abstract

The utility model relates to the technical field of injection molds and discloses an anti-sticking injection mold with a front mold ejection assisting structure. The die comprises an upper die seat, a static die plate, a movable die plate, a lower die seat, an upper die core and a lower die core, wherein a die cavity is formed between the static die plate and the movable die plate for product molding. The core innovation of the device is that a top assisting structure is additionally arranged, the structure is composed of a top assisting spring, a top assisting rod and a top assisting plate, one end of the top assisting spring is propped against the static template, the other end of the top assisting spring is connected with the top assisting rod, the top assisting plate is arranged in an upper die core sliding hole in a sliding mode, and one end of the top assisting plate is propped against the upper end face of the lower die core. The design effectively solves the problem that the deep-cavity thin product is easy to adhere to the side of a static template (an upper die core) during demoulding, changes the demoulding stress state of the product, enables the demoulding to be smoother, simultaneously remarkably improves the quality of the product, avoids scraping and deformation of the surface of the product during demoulding, improves the yield, and has extremely high practical value.

Inventors

LI TONG
JIANG HAIXIAO
WAN YUNGANG

Assignees

乐清瑞风精密模具有限公司

Dates

Publication Date: 20260508
Application Date: 20250513

Claims (6)

1. The anti-sticking injection mold with the front mold ejection assisting structure comprises an upper mold base, a static mold plate, a movable mold plate, a lower mold base, an upper mold core and a lower mold core, wherein the upper mold core and the lower mold core are arranged between the static mold plate and the movable mold plate, and a mold cavity for molding a product is arranged between the static mold plate and the movable mold plate; The top assisting structure comprises a top assisting spring, a top assisting rod connected with one end of the top assisting spring and a top assisting plate connected with one end of the top assisting rod, wherein one end of the top assisting spring, which is far away from the top assisting rod, is propped against the static template, the upper die core is provided with a mounting hole for mounting the top assisting spring and the top assisting rod, the top assisting plate is arranged in a sliding hole of the upper die core in a sliding manner, and one end of the top assisting plate, which is far away from the top assisting spring, is propped against the upper end face of the lower die core.
2. The anti-sticking injection mold with the front mold top supporting structure according to claim 1, wherein the top supporting structure is arranged on four corners of each mold cavity.
3. The anti-sticking injection mold with the front mold top supporting structure of claim 1, wherein the top supporting plate is of an L-shaped structure matched with the shape of the side wall of the mold cavity.
4. The anti-sticking injection mold with the front mold ejection assisting structure according to claim 1, wherein the ejection assisting rod and the ejection assisting plate are respectively provided with an anti-falling step I, and the mounting hole and the sliding hole are internally provided with an anti-falling step II which is matched with the anti-falling step I.
5. The anti-sticking injection mold with the front mold top supporting structure of claim 1, wherein the upper mold core comprises a first left half and a first right half, the lower mold core comprises a second left half and a second right half, positioning notches are formed in four corners of the second left half and the second right half, and positioning protruding blocks capable of being mutually clamped with the positioning notches are arranged on the first left half and the first right half.
6. The anti-sticking injection mold with the front mold top supporting structure of claim 5, wherein four mold cavities are arranged on the left half part II and the right half part II, and the four mold cavities are distributed in a square shape.

Description

Anti-sticking injection mold with front mold ejection assisting structure Technical Field The utility model relates to the technical field of injection molds, in particular to an anti-sticking injection mold with a front mold ejection assisting structure. Background The injection mold is used as key equipment for producing plastic products, and the performance quality of the injection mold directly relates to the product quality and the production efficiency. Under the current diversified demands of plastic products, the deep-cavity thin products are widely applied, and the design and the manufacture of injection molds are more challenging. Currently, when injection molds are used to form thin products with deep cavities, the demolding process has significant drawbacks. In the conventional operation, the molded product is easily adhered to the side of a static template (upper die core) of the die by simply relying on an ejection mechanism of a movable die. The adhesion phenomenon not only causes the difficult and heavy demolding process, but also causes damage such as scraping, deformation and the like to the surface of a product when serious, so that the yield of the product is reduced, the production cost is increased, and the further expansion of the injection molding process in the field of manufacturing complex products is limited. How to effectively solve the adhesion problem of deep cavity thin products in the injection molding and demolding process becomes a technical problem to be overcome. Disclosure of utility model The utility model provides an anti-sticking injection mold with a front mold ejection assisting structure aiming at the defects in the background technology. The technical scheme includes that the anti-sticking injection mold with the front mold ejection assisting structure comprises an upper mold base, a static mold plate, a movable mold plate, a lower mold base, an upper mold core and a lower mold core, wherein the upper mold core and the lower mold core are arranged between the static mold plate and the movable mold plate, a mold cavity for molding a product is arranged between the static mold plate and the movable mold plate, and the anti-sticking injection mold also comprises an ejection assisting structure for assisting ejection of the molded product from the mold cavity; The top assisting structure comprises a top assisting spring, a top assisting rod connected with one end of the top assisting spring and a top assisting plate connected with one end of the top assisting rod, wherein one end of the top assisting spring, which is far away from the top assisting rod, is propped against the static template, the upper die core is provided with a mounting hole for mounting the top assisting spring and the top assisting rod, the top assisting plate is arranged in a sliding hole of the upper die core in a sliding manner, and one end of the top assisting plate, which is far away from the top assisting spring, is propped against the upper end face of the lower die core. Further, the four corners of each die cavity are provided with the jacking-assisting structures. Further, the auxiliary top plate is of an L-shaped structure matched with the shape of the side wall of the die cavity. Furthermore, the auxiliary ejector rod and the auxiliary top plate are respectively provided with an anti-falling step I, and an anti-falling step II which is matched with the anti-falling step I is arranged in the mounting hole and the sliding hole. Further, the upper die core comprises a first left half and a first right half, the lower die core comprises a second left half and a second right half, positioning notches are formed in four corners of the second left half and the second right half, and positioning protruding blocks capable of being mutually clamped with the positioning notches are arranged on the first left half and the first right half. Further, four mold cavities are arranged on the left half part II and the right half part II, and the four mold cavities are distributed in a square shape. The beneficial effects of the utility model are as follows: Firstly, the problem of demoulding of deep-cavity thin products is effectively solved. When traditional injection mold only relies on the movable mould ejecting, the product very easily adhesion is in quiet template (go up mould benevolence) side, and this patent sets up at quiet template (go up mould benevolence) side and helps a structure, takes place when the opening mould action, helps the elastic potential energy release of top spring, promotes and helps the ejector pin, and then drives helping the roof with the supplementary ejecting of product from last mould benevolence. The design changes the stress state of the product during demolding, greatly reduces the condition that the product is difficult to demold due to adhesion on the side of the static template, and enables the demolding process to be smoother. And secondly, the product quality