CN-224210459-U - Demoulding structure with inclined drawing driven by straight top

CN224210459UCN 224210459 UCN224210459 UCN 224210459UCN-224210459-U

Abstract

The utility model relates to the technical field of injection mold stripping. The demolding mechanism comprises a rear mold core and a straight top piece, wherein the straight top piece is connected to the rear mold core in a sliding mode along the vertical direction, an oblique drawing motion sliding block is connected to the straight top piece in a sliding mode, an inclined groove is formed in the side wall of the straight top piece, the inclined groove is arranged in parallel with the oblique drawing motion sliding block, an auxiliary pin is arranged on the side wall of the oblique drawing motion sliding block, the end portion of the auxiliary pin is located in the inclined groove, a guide rail insert is arranged on the side edge of the straight top piece, an auxiliary groove is formed in the guide rail insert corresponding to the motion track of the oblique drawing motion sliding block, and the end portion of the auxiliary pin is located in the auxiliary groove. The utility model solves the problem of poor core pulling and demolding stability of the back-off structure.

Inventors

HE CHUN
HU XIAOFENG
YIN JIANMING
CHEN RUI

Assignees

深圳亿和模具制造有限公司

Dates

Publication Date: 20260508
Application Date: 20250513

Claims (7)

1. The demolding structure with the inclined drawing driven by the straight top is characterized by comprising a rear mold core, a straight top piece, an inclined drawing moving sliding block and a guide rail insert, wherein the straight top piece is connected to the rear mold core in a sliding mode in the vertical direction, the inclined drawing moving sliding block is connected to the straight top piece in a sliding mode in the inclined direction, an inclined groove is formed in the straight top piece, the forming direction of the inclined groove is consistent with the sliding direction of the inclined drawing moving sliding block, an auxiliary pin is arranged on the side wall of the inclined drawing moving sliding block, the end portion of the auxiliary pin is located in the inclined groove, the guide rail insert is arranged on the side edge of the straight top piece, an auxiliary groove is formed in the guide rail insert corresponding to the moving track of the inclined drawing moving sliding block, and the end portion of the auxiliary pin is located in the auxiliary groove.
2. The demoulding structure driven by the straight top to obliquely draw according to claim 1, wherein a sliding groove is obliquely formed on the straight top piece corresponding to the obliquely-drawing sliding block, and the oblique direction of the sliding groove is consistent with that of the oblique groove.
3. The demolding structure with the inclined drawing function driven by the straight top according to claim 1, wherein the rear mold core is provided with a straight top groove, the straight top piece is positioned in the straight top groove, the side wall of the straight top piece is provided with a limiting part in a protruding mode, and the inner wall of the straight top groove is provided with a limiting groove corresponding to the limiting part.
4. The demoulding structure with the inclined drawing driven by the straight top according to claim 2, wherein the guide rail insert is fixedly connected to the rear mould core, a mounting groove is formed in the rear mould core, which is close to the straight top groove, corresponding to the guide rail insert, an anti-falling part is arranged on the side wall of the guide rail insert, and a receiving table is arranged on the side wall of the mounting groove, which corresponds to the anti-falling part.
5. The demoulding structure with the inclined drawing driven by the straight top according to claim 1, wherein the end part of the inclined drawing motion sliding block is provided with a limiting part, the limiting part is a wedge-shaped bulge, the inner wall of the inclined groove, which is close to the end part of the straight top piece, is provided with an abutting part, and the inner wall of the abutting part abuts against the outer wall of the limiting part.
6. The demoulding structure with the inclined drawing driven by the straight top according to claim 1 or 4, wherein a stabilizing block is arranged at the end part of the straight top part, which is close to the guide rail insert, and protrudes towards the guide rail insert, a stabilizing groove is formed at the end part of the guide rail insert, corresponding to the stabilizing block, and the stabilizing block is positioned in the stabilizing groove.
7. The demoulding structure with the inclined drawing function driven by the straight top according to claim 1, wherein sliding strips are arranged on the side edges of the straight top piece along the vertical movement direction, sliding rails are arranged on the inner walls of the straight top grooves corresponding to the sliding strips, and the sliding strips are in transition fit with the sliding rails.

Description

Demoulding structure with inclined drawing driven by straight top Technical Field The utility model relates to the technical field of injection mold demolding, in particular to a demolding structure with a straight top driving oblique drawing. Background In the field of injection molds, when demolding a product with an inverted structure, a conventional setting mechanism cannot realize smooth demolding of the product due to the limitation of space interference of the inverted structure, and a specific core pulling mechanism is usually required to be designed to finish lateral parting. When the back-off structure is positioned in the product and the cavity space is relatively limited, the back-off structure is limited by the layout of the die and the movement track, and the oblique top core pulling mechanism becomes a mainstream solution due to the compact structural characteristics of the oblique top core pulling mechanism. The conventional oblique-ejection core-pulling mechanism still has a remarkable technical bottleneck in practical application, namely firstly, the design of the oblique-ejection angle has a strict restriction range. When the angle of the inclined top is too small, although the motion stability is good, the transverse core pulling displacement which can be obtained under the unit ejection stroke is obviously reduced, the requirement of the demoulding stroke is multiplied, the contradiction that the length of the inclined top exceeds the installation space of a mould possibly occurs in deep cavity products, and secondly, if the inclined top with a large angle is adopted, the core pulling efficiency can be theoretically improved, but the lateral component force between the inclined top and a mould guide groove can be increased in a nonlinear way in the ejection process, so that the friction and abrasion of the inclined top and a guide part are aggravated, the motion clamping stagnation and even the mechanism deformation are easily caused due to uneven stress, and the service life of the mould is seriously influenced. In addition, the large-angle inclined roof can cause the increase of the depth of the clearance groove of the die, weakens the structural strength of the die plate, and is easy to cause the failure problems of die cracking and the like under the action of long-term alternating load. In order to solve the contradiction, a scheme of multistage inclined top or adding an auxiliary guide mechanism is generally adopted, but the improvement modes can obviously increase the complexity and manufacturing cost of the die structure, and the effective layout is difficult to realize in a narrow space. Therefore, how to break through the restriction relation between the angle of the inclined top and the core pulling stroke in a limited space, and simultaneously ensure the motion stability and the structural reliability of the mold, is still a technical problem to be overcome in the field. Disclosure of utility model The utility model aims to solve the technical problem that the inverted buckle structure has poor core pulling and demoulding stability, and provides a demoulding structure with a straight top driving inclined drawing for overcoming the defects in the prior art. The technical scheme adopted for solving the technical problems is as follows: The demolding structure comprises a rear mold core and a straight top piece, wherein the straight top piece is connected onto the rear mold core in a sliding mode along the height direction, an oblique drawing motion sliding block is connected onto the straight top piece in a sliding mode, an inclined groove is formed in the side wall of the straight top piece, the inclined groove and the oblique drawing motion sliding block are arranged in parallel, an auxiliary pin is arranged on the side wall of the oblique drawing motion sliding block, the end portion of the auxiliary pin is located in the inclined groove, a guide rail insert is arranged on the side edge of the straight top piece, an auxiliary groove is formed in the guide rail insert corresponding to the motion track of the oblique drawing motion sliding block, and the end portion of the auxiliary pin is located in the auxiliary groove. Through adopting above-mentioned technical scheme, realized the in-process that straight top piece risees, through the interact of inclined groove and auxiliary pin, drive oblique drawing motion slider carries out tilting to accomplish the drawing of patterns action, this kind of structure has simplified the mould structure, has improved drawing of patterns efficiency again, has solved complicated, the fragile problem of oblique drawing of patterns mechanism in traditional mould, has improved the reliability and the life of mould. The design of the guide rail insert provides a stable movement track for the oblique drawing movement slide block, ensures the accuracy of demoulding action, improves the demoulding accuracy and reduces the damage to the mould and