CN215703310U

CN215703310U - Mould structure convenient to back-off demolding

Info

Publication number: CN215703310U
Application number: CN202121449704.9U
Authority: CN
Inventors: 易成芳
Original assignee: Baocheng Precision Mould Industrial Ltd
Current assignee: Baocheng Precision Mould Industrial Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-02-01
Anticipated expiration: 2031-06-28

Abstract

The utility model provides a die structure convenient for back-off demolding, which comprises a back die core, a back die insert embedded in the back die core and a back-off demolding assembly movably connected with the back die insert, wherein the back-off demolding assembly comprises a first pressing strip, a second pressing strip and a sliding block; the first pressing strip and the second pressing strip are arranged oppositely, and the sliding block comprises an embedding part partially embedded into the rear mold insert and a sliding part connected with the embedding part and simultaneously connected with the first pressing strip and the second pressing strip in a sliding manner; the rear mold insert is provided with a withdrawing cavity matched with the embedding part, and the sliding part slides relative to the first pressing strip and the second pressing strip and drives the embedding part to move in the withdrawing cavity. The utility model solves the problem of back-off demoulding by arranging the slidable back-off demoulding component and the back-off cavity arranged in the back mould insert, has simple structure and convenient use, does not need to change the mould structure too much, can be applied to products with various sizes and shapes, and is beneficial to reducing the cost and simplifying the demoulding process.

Description

Mould structure convenient to back-off demolding

Technical Field

The utility model relates to the technical field of dies, in particular to a die structure convenient for back-off demolding.

Background

When a product with a back-off structure is processed by using a mold, the product is generally demolded by using a mode of pitched roof or internal row position demolding, the molds adopted by the two demolding modes are complex, and the demolding process is complex.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a die structure convenient for back-off demolding, so as to solve the problem of inconvenient demolding of the back-off product.

In order to achieve the purpose, the utility model provides the following technical scheme: a die structure convenient for back-off demolding comprises a back die core, a back die insert embedded in the back die core and a back-off demolding assembly movably connected with the back die insert, wherein the back-off demolding assembly comprises a first pressing strip, a second pressing strip and a sliding block; the first pressing strip and the second pressing strip are arranged oppositely, and the sliding block comprises an embedding part partially embedded into the rear mold insert and a sliding part connected with the embedding part and simultaneously connected with the first pressing strip and the second pressing strip in a sliding manner; the rear mold insert is provided with a withdrawing cavity matched with the embedding part, and the sliding part slides relative to the first pressing strip and the second pressing strip and drives the embedding part to move in the withdrawing cavity.

Preferably, the embedding part is provided with a back-off piece, and the rear mold insert is provided with a first opening corresponding to the back-off piece; when the mold structure closes the mold, the reverse fastener protrudes out of the first opening, and when the mold structure opens the mold, the reverse fastener is driven by the sliding part to move towards the direction away from the first opening and close to the central shaft of the rear mold insert until the reverse fastener is completely located in the retreating cavity.

Preferably, the first pressing strip is provided with a first step, the second pressing strip is provided with a second step, the sliding part is provided with a first flange and a second flange which are respectively matched with the first step and the second step, the sliding part is respectively clamped on the first step and the second step through the first flange and the second flange, and the first flange and the second flange slide along the first step and the second step under the action of external force.

Preferably, the back-off die assembly further comprises a scoop base partially embedded within and moving synchronously with the runner.

Preferably, the sliding part comprises a mounting groove, the shovel base is provided with an embedded part which is matched with the mounting groove and embedded in the mounting groove, and the shovel base is driven by a power assembly arranged outside to drive the sliding part to move so that the shovel base and the sliding part can move synchronously.

Preferably, the engaging portion is in contact with an inner groove wall of the mounting groove, and a contact surface parallel to a sliding direction of the sliding portion is provided as an inclined surface.

Preferably, the shovel base is provided with a mounting hole penetrating through the shovel base and an ejection screw fixed in the mounting hole, and the shovel base is connected with the power assembly through the ejection screw.

Preferably, the sliding block is fixedly connected with a wear-resistant block.

Preferably, the wear-resistant blocks include a first wear-resistant block and a second wear-resistant block provided on both surfaces of the sliding portion facing away from each other.

The utility model solves the problem of back-off demoulding by arranging the slidable back-off demoulding component and the back-off cavity arranged in the back mould insert, has simple structure and convenient use, does not need to change the mould structure too much, can be applied to products with various sizes and shapes, and is beneficial to reducing the cost and simplifying the demoulding process.

Drawings

FIG. 1 is a perspective view of one of the views of a mold structure for facilitating back-off demolding in accordance with the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a perspective view of another perspective of a mold structure for facilitating back-off demolding in accordance with the present invention;

FIG. 4 is an exploded view of one perspective of a mold structure for facilitating back-off demolding in accordance with the present invention;

FIG. 5 is an exploded view of another perspective of a mold structure for facilitating back-off demolding in accordance with the present invention;

FIG. 6 is a schematic structural view of a slider according to the present invention;

FIG. 7 is a cross-sectional view from one perspective of the clamp of the present invention;

FIG. 8 is a cross-sectional view from the same perspective as the demolded condition of the present invention.

Reference numerals: 10. a rear mold core; 101. a rear mold insert; 1010. an insert hole; 20. back-off demolding the assembly; 30. a first compression bar; 40. a second pressing strip; 200. a slider; 201. an insertion section; 202. a sliding part; 1011. a retreat cavity; 2011. a back-off member; 1012. a first opening; 301. a first step; 401. a second step; 2021. a first flange; 2022. a second flange; 50. a shovel base; 2023. mounting grooves; 501. a fitting portion; 502. mounting holes; 60. ejecting a screw; 701. a first wear block; 702. a second wear block.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example (b): as shown in fig. 1 to 8, the present embodiment provides a mold structure for facilitating back-off demolding, including a back mold core 10, a back mold insert 101 embedded in the back mold core 10, and a back-off demolding assembly 20 movably connected to the back mold insert 101, where the back-off demolding assembly 20 includes a first molding bar 30, a second molding bar 40, and a sliding block 200; an insert hole 1010 is formed in the center of the rear mold core 10, and the rear mold insert 101 is clamped in the insert hole 1010; the first pressing strip 30 and the second pressing strip 40 are oppositely arranged, and the first pressing strip 30 and the second pressing strip 40 are fixed on the B plate through fixing screws. The slide 200 includes an embedding portion 201 partially embedded in the rear mold insert 101 and a sliding portion 202 connected to the embedding portion 201 and slidably connected to the first bead 30 and the second bead 40 at the same time; the rear mold insert 101 is provided with a withdrawing cavity 1011 matched with the embedding part 201, and the sliding part 202 slides relative to the first pressing strip 30 and the second pressing strip 40 and drives the embedding part 201 to move in the withdrawing cavity 1011. The first bead 30 is provided with a first step 301, the second bead 40 is provided with a second step 401, the sliding part 202 is provided with a first flange 2021 and a second flange 2022 which are respectively matched with the first step 301 and the second step 401, the sliding part 202 is respectively clamped on the first step 301 and the second step 401 through the first flange 2021 and the second flange 2022, and the first flange 2021 and the second flange 2022 slide along the first step 301 and the second step 401 under the action of external force. Specifically, the first and

second beads

30 and 40 fix the slider 200 to the B plate by the first and

second steps

301 and 401, and enable the slider 200 to slide relative to the B plate.

Referring to fig. 1 to 8, preferably, the insert portion 201 is provided with a back-off member 2011, and the rear mold insert 101 is provided with a first opening 1012 corresponding to the back-off member 2011; when the mold structure is closed, the reversing piece 2011 protrudes out of the first opening 1012, and when the mold structure is released from the mold, the reversing piece 2011 is driven by the sliding portion 202 to move in a direction away from the first opening 1012 and close to the central axis of the rear mold insert 101 until the reversing piece is completely located in the retreating cavity 1011. Alternatively, the undercut of undercut 2011 may be designed to accommodate different undercut features of different products, including but not limited to the undercut 2011 design shown in the drawings.

Referring to fig. 1-8, preferably, the reverse stripper module 20 further includes a scoop base 50 partially embedded within the runner 202 and moving in synchronization with the runner 202. The sliding part 202 comprises a mounting groove 2023 arranged on one side of the sliding part 202 far away from the embedding part 201, the shovel base 50 is provided with an embedding part 501 which is matched with the mounting groove 2023 and is embedded in the mounting groove 2023, and the shovel base 50 is driven by a power assembly arranged outside to further drive the sliding part 202 to move, so that the shovel base 50 and the sliding part 202 realize synchronous movement.

Preferably, the fitting portion 501 is in contact with an inner groove wall of the mounting groove 2023, and a contact surface parallel to the sliding direction of the sliding portion 202 is provided as an inclined surface.

Referring to fig. 4-8, preferably, blade base 50 is provided with a mounting hole 502 extending through blade base 50 and an ejector screw 60 fixed in mounting hole 502, and blade base 50 is connected to the power assembly via ejector screw 60. The reverse-buckling part 2011 on the sliding block 200 is driven to move by the shovel base 50 arranged on the B plate, so that the problem of reverse-buckling demolding is solved, the whole mold is not complicated, the production and processing procedures of complex product structures are effectively simplified, and the production efficiency is improved.

Preferably, a wear-resistant block is fixedly connected to the slider 200. The wear-resistant blocks include a first wear-resistant block 701 and a second wear-resistant block 702 provided on both surfaces of the runner 202 facing away from each other.

During assembly, the sliding block 200 provided with the inverted buckle 2011 is pressed on a B plate by the first pressing strip 30 and the second pressing strip 40, but the sliding block 200 can slide relative to the B plate; then, the shovel base 50 is arranged on the B plate, and the shovel base 50 drives the sliding block 200 to move reversely when the die is demoulded and ejected, so that the purpose of releasing and demoulding is achieved.

In conclusion, the slide block is driven by the shovel base to further drive the back-off demolding, so that the structural stability of the whole mold is improved while the problem of back-off demolding is solved, and a product is prevented from leaking a mantle; in addition, the utility model has simple structure and convenient use, does not need to change the mould structure too much, can be applied to product moulds with various sizes and shapes, is favorable for reducing the cost and simplifying the mould stripping process, and has strong applicability.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A die structure convenient for back-off demolding is characterized by comprising a back die core, a back die insert embedded in the back die core and a back-off demolding assembly movably connected with the back die insert, wherein the back-off demolding assembly comprises a first pressing strip, a second pressing strip and a sliding block; the first pressing strip and the second pressing strip are arranged oppositely, and the sliding block comprises an embedding part partially embedded into the rear mold insert and a sliding part connected with the embedding part and simultaneously connected with the first pressing strip and the second pressing strip in a sliding manner; the rear mold insert is provided with a withdrawing cavity matched with the embedding part, and the sliding part slides relative to the first pressing strip and the second pressing strip and drives the embedding part to move in the withdrawing cavity.

2. The mold structure convenient for back-off demolding according to claim 1, wherein the embedding portion is provided with a back-off member, and the back mold insert is provided with a first opening corresponding to the back-off member; when the mold structure is closed, the reversing piece protrudes out of the first opening, and when the mold structure is opened, the reversing piece is driven by the sliding part to move towards the direction away from the first opening and close to the central shaft of the rear mold insert until the reversing piece is completely positioned in the retreating cavity.

3. The mold structure facilitating the back-off demolding according to claim 1, wherein the first pressing bar is provided with a first step, the second pressing bar is provided with a second step, the sliding portion is provided with a first flange and a second flange respectively matched with the first step and the second step, the sliding portion is clamped on the first step and the second step through the first flange and the second flange respectively, and the first flange and the second flange slide along the first step and the second step under the action of external force.

4. The mold structure for facilitating back-off molding as claimed in claim 1, wherein said back-off molding assembly further comprises a blade base partially embedded in and moving synchronously with said runner.

5. The mold structure convenient for back-off demolding according to claim 4, wherein the sliding portion comprises a mounting groove, the shovel base is provided with an embedded portion which is matched with the mounting groove and embedded in the mounting groove, and the shovel base is driven by a power assembly arranged outside to drive the sliding portion to move, so that the shovel base and the sliding portion can move synchronously.

6. The mold structure for facilitating back-off molding according to claim 5, wherein the engaging portion is in contact with an inner wall of the mounting groove and is provided with an inclined surface along a contact surface parallel to a sliding direction of the runner.

7. The mold structure facilitating back-off demolding according to claim 5, wherein the shovel base is provided with a mounting hole penetrating through the shovel base and an ejection screw fixed in the mounting hole, and the shovel base is connected with the power assembly through the ejection screw.

8. The mold structure for facilitating back-off molding according to claim 1, wherein a wear-resistant block is fixedly connected to the slide block.

9. The mold structure for facilitating back-off of a mold as claimed in claim 8, wherein the wear-resistant blocks include a first wear-resistant block and a second wear-resistant block disposed on two surfaces of the runner portion facing away from each other.