阅读说明：本技术 脱芯机构 (Core-releasing mechanism ) 是由 陈金官 于 2021-08-31 设计创作，主要内容包括：本发明涉及一种脱芯机构,包括上模组件以及下模组件,所述上模组件包括限位板以及设于所述限位板朝向下模组件一侧的斜插块,所述下模组件包括垫块以及滑动连接在所述垫块朝向所述上模组件一侧并可与所述斜插块滑动连接的第一滑块,所述脱芯机构设置有闭模状态以及脱芯状态；在所述脱芯机构的闭模状态,所述限位板可与产品上端内壁相抵,所述第一滑块可与产品下端内壁及产品台阶部内壁相抵；在所述脱芯机构的脱芯状态,所述限位板与斜插块可向远离所述下模组件的方向运动,所述第一滑块可相对所述斜插块滑动并逐渐靠近所述脱芯机构的轴线,直至所述下模组件可由产品上端脱出。该脱芯机构可保证台阶部外的R角角度以及产品下端底部到台阶部的高度。(The invention relates to a core-pulling mechanism, which comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a limiting plate and an inclined insertion block arranged on one side of the limiting plate, which faces towards the lower die assembly, the lower die assembly comprises a cushion block and a first slide block which is connected to one side of the cushion block, which faces towards the upper die assembly, in a sliding manner and can be connected with the inclined insertion block in a sliding manner, and the core-pulling mechanism is provided with a die closing state and a core-pulling state; in the mold closing state of the core-releasing mechanism, the limiting plate can abut against the inner wall of the upper end of the product, and the first sliding block can abut against the inner wall of the lower end of the product and the inner wall of the step part of the product; in the depoling state of the depoling mechanism, the limiting plate and the inclined insertion block can move towards the direction far away from the lower die assembly, and the first sliding block can slide relative to the inclined insertion block and gradually approach to the axis of the depoling mechanism until the lower die assembly can be deplated from the upper end of a product. The core-pulling mechanism can ensure the angle of the R angle outside the step part and the height from the bottom of the lower end of the product to the step part.)

1. A core-stripping mechanism characterized by: the core removing mechanism comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a limiting plate and an inclined insert block arranged on one side of the limiting plate, which faces the lower die assembly, the lower die assembly comprises a cushion block, a first slide block which is connected to one side of the cushion block, which faces the upper die assembly in a sliding mode and can be connected with the inclined insert block in a sliding mode, and a second slide block which is connected with the inclined insert block in a sliding mode, and the core removing mechanism is set to be in a die closing state and a core removing state;

in the mold closing state of the core-releasing mechanism, the limiting plate can abut against the inner wall of the upper end of the product, and the first sliding block can abut against the inner wall of the lower end of the product and the inner wall of the step part of the product;

in the depoling state of the depoling mechanism, the limiting plate and the inclined insertion block can move towards the direction far away from the lower die assembly, and the first sliding block can slide relative to the inclined insertion block and gradually approach to the axis of the depoling mechanism until the lower die assembly can be deplated from the upper end of a product.

2. The decoring mechanism of claim 1, wherein: the lower die assembly further comprises a connecting rod, and the connecting rod is connected to the cushion block in a sliding mode along the radial direction of the core-releasing mechanism and is connected with the first sliding block.

3. The decoring mechanism of claim 2, wherein: a sliding hole is formed in the cushion block, and the cross section of the sliding hole in the direction perpendicular to the axis of the core-pulling mechanism is an oblong cross section extending along the radial direction of the core-pulling mechanism;

the connecting rod passes through the sliding hole and is connected with the first sliding block.

4. The decoring mechanism of claim 2, wherein: the first sliding blocks are arranged along the circumferential direction of the inclined insertion block, and a gap is formed between every two adjacent first sliding blocks;

the connecting rod is provided with a plurality ofly, and is a plurality of the connecting rod with first slider one-to-one sets up.

5. The decoring mechanism of claim 1, wherein: the section of the inclined insertion block along the axial direction of the core-pulling mechanism is trapezoidal, and the width of the section of the inclined insertion block along the axial direction of the core-pulling mechanism is gradually increased from the direction close to the lower die assembly to the direction far away from the lower die assembly;

the section of the first sliding block along the axial direction of the core-pulling mechanism is trapezoidal, and the width of the section of the first sliding block along the axial direction of the core-pulling mechanism is gradually reduced from the direction close to the lower die assembly to the direction far away from the lower die assembly.

6. The core pulling mechanism according to claim 5, wherein: a first protruding sliding rail is formed on the side wall of the oblique insertion block, a first sliding groove matched with the first protruding sliding rail is formed in the position, corresponding to the first protruding sliding rail, of the first sliding block, and the first protruding sliding rail is connected with the first sliding groove in a sliding mode.

7. The decoring mechanism of claim 6, wherein: the outer wall of the first protruding sliding rail is recessed towards the axis direction of the core-pulling mechanism to form a limiting groove, and the groove bottom surface of the limiting groove is parallel to the axis of the core-pulling mechanism;

the groove bottom of the first sliding groove protrudes towards the axial direction of the core-pulling mechanism to form a limiting boss, and the surface of one side, close to the axial line of the core-pulling mechanism, of the limiting boss is parallel to the axial line of the core-pulling mechanism;

in the mold closing state of the core-pulling mechanism, a gap is formed between the bottom surface of the limiting groove and the limiting boss;

in the core-releasing state of the core-releasing mechanism, the first sliding block can slide relative to the inclined insertion block and gradually approach to the axis of the core-releasing mechanism until the bottom surface of the limiting groove abuts against the limiting boss.

8. The decoring mechanism of claim 1, wherein: the first sliding blocks and the second sliding blocks are provided with a plurality of sliding blocks, the second sliding blocks and the first sliding blocks are arranged at intervals along the circumferential direction of the oblique insertion block, and the second sliding blocks are in sliding contact with the adjacent first sliding blocks;

in the core removing state of the core removing mechanism, the second sliding block can slide relative to the inclined insertion block and gradually approaches to the axis of the core removing mechanism, and meanwhile, the second sliding block can move in the direction far away from the cushion block.

9. The core pulling mechanism according to claim 8, wherein: a second sliding groove is formed in the side wall of the oblique insertion block, a second protruding sliding rail matched with the second sliding groove is formed in the position, corresponding to the second sliding groove, of the second sliding block, and the second protruding sliding rail is connected with the second sliding groove in a sliding mode.

10. The core pulling mechanism according to claim 8, wherein: the upper die assembly further comprises a plurality of elastic abutting modules arranged on the limiting plate;

in the mold closing state of the core-releasing mechanism, part of the elastic abutting modules can abut against the first sliding block, and other elastic abutting modules can abut against the second sliding block.

Technical Field

The invention relates to the technical field of closing and core removing, in particular to a core removing mechanism.

Background

Conventionally, when a product 1a having the structure shown in fig. 1 is depoling, the product 1a generally includes an upper end 11a having a small diameter and a lower end 12a having a large outer diameter, and a stepped portion 13a is formed at a position where the upper end 11a and the lower end 12a are in contact with each other. Because of the shape and characteristics of the product 1a, a necking mode is often required to be adopted for core removal, and most necking in the prior art is realized in a pneumatic necking forming mode.

The air compression closing-up forming mode has the following defects: because there is no material inside the step part 13a of the product 1a, the inner wall of the product 1a is in a semi-free state, and problems that the height from the bottom to the step part 13a is difficult to control, the forming of the outer R corner of the step part 13a is unstable, and the terrace surface of the step part 13a is recessed in some cases easily occur during extrusion.

Disclosure of Invention

Based on the above, the invention provides a core-stripping mechanism, which can ensure that a first slide block can be abutted against the inner wall of the lower end of a product and the inner wall of a step part of the product in a mold closing state of the core-stripping mechanism, thereby achieving the purposes of ensuring the angle of an R angle outside the step part and the height from the bottom of the lower end of the product to the step part.

A core removing mechanism comprises an upper die assembly and a lower die assembly, wherein the upper die assembly comprises a limiting plate and an inclined insert block arranged on one side of the limiting plate, which faces towards the lower die assembly, the lower die assembly comprises a cushion block, a first slide block and a second slide block, the first slide block is connected to one side of the cushion block, which faces towards the upper die assembly, in a sliding manner, the first slide block can be connected with the inclined insert block in a sliding manner, the second slide block is connected with the inclined insert block in a sliding manner, and the core removing mechanism is provided with a die closing state and a core removing state;

in the mold closing state of the core-releasing mechanism, the limiting plate can abut against the inner wall of the upper end of the product, and the first sliding block can abut against the inner wall of the lower end of the product and the inner wall of the step part of the product;

in the depoling state of the depoling mechanism, the limiting plate and the inclined insertion block can move towards the direction far away from the lower die assembly, and the first sliding block can slide relative to the inclined insertion block and gradually approach to the axis of the depoling mechanism until the lower die assembly can be deplated from the upper end of a product.

In one embodiment, the lower die assembly further comprises a connecting rod which is connected to the cushion block in a sliding manner along the radial direction of the core-pulling mechanism and is connected with the first sliding block.

In one embodiment, the cushion block is provided with a sliding hole, and the cross section of the sliding hole along the direction vertical to the axis of the core-pulling mechanism is an oblong cross section extending along the radial direction of the core-pulling mechanism;

the connecting rod passes through the sliding hole and is connected with the first sliding block.

In one embodiment, a plurality of first sliding blocks are arranged, the plurality of first sliding blocks are arranged along the circumferential direction of the oblique insertion block, and a gap is formed between every two adjacent first sliding blocks;

the connecting rod is provided with a plurality ofly, and is a plurality of the connecting rod with first slider one-to-one sets up.

In one embodiment, the cross section of the inclined insertion block along the axial direction of the core-pulling mechanism is trapezoidal, and the width of the cross section of the inclined insertion block along the axial direction of the core-pulling mechanism gradually increases from the direction close to the lower die assembly to the direction far away from the lower die assembly;

the section of the first sliding block along the axial direction of the core-pulling mechanism is trapezoidal, and the width of the section of the first sliding block along the axial direction of the core-pulling mechanism is gradually reduced from the direction close to the lower die assembly to the direction far away from the lower die assembly.

In one embodiment, a first protruding slide rail is formed on a side wall of the oblique insertion block, a first sliding groove matched with the first protruding slide rail is formed in a position, corresponding to the first protruding slide rail, of the first sliding block, and the first protruding slide rail is connected with the first sliding groove in a sliding mode.

In one embodiment, the outer wall of the first protruding sliding rail is recessed towards the axial direction of the core-pulling mechanism to form a limiting groove, and the groove bottom surface of the limiting groove is parallel to the axial line of the core-pulling mechanism;

the groove bottom of the first sliding groove protrudes towards the axial direction of the core-pulling mechanism to form a limiting boss, and the surface of one side, close to the axial line of the core-pulling mechanism, of the limiting boss is parallel to the axial line of the core-pulling mechanism;

in the mold closing state of the core-pulling mechanism, a gap is formed between the bottom surface of the limiting groove and the limiting boss;

in the core-releasing state of the core-releasing mechanism, the first sliding block can slide relative to the inclined insertion block and gradually approach to the axis of the core-releasing mechanism until the bottom surface of the limiting groove abuts against the limiting boss.

In one embodiment, the first slide block and the second slide block are provided with a plurality of slide blocks, the plurality of second slide blocks and the plurality of first slide blocks are arranged at intervals along the circumferential direction of the oblique insertion block, and the second slide blocks are in sliding contact with the adjacent first slide blocks;

in the core removing state of the core removing mechanism, the second sliding block can slide relative to the inclined insertion block and gradually approaches to the axis of the core removing mechanism, and meanwhile, the second sliding block can move in the direction far away from the cushion block.

In one embodiment, a second sliding groove is formed in the side wall of the oblique insertion block, a second protruding sliding rail matched with the second sliding groove is formed in the position, corresponding to the second sliding groove, of the second sliding block, and the second protruding sliding rail is connected with the second sliding groove in a sliding mode.

In one embodiment, the upper die assembly further comprises a plurality of elastic abutting modules arranged on the limiting plate;

in the mold closing state of the core-releasing mechanism, part of the elastic abutting modules can abut against the first sliding block, and other elastic abutting modules can abut against the second sliding block.

In the core-pulling mechanism, in the mold-closing state of the core-pulling mechanism, the limiting plate can abut against the inner wall of the upper end of the product, and the first sliding block can abut against the inner wall of the lower end of the product and the inner wall of the step part of the product, so that the angle of an R angle outside the step part and the height from the bottom of the lower end of the product to the step part are ensured; in the core removing state of the core removing mechanism, the limiting plate and the inclined insertion block can move towards the direction far away from the lower die assembly, and the first sliding block can slide relative to the inclined insertion block and gradually approach to the axis of the core removing mechanism until the lower die assembly can be removed from the upper end of a product, so that the core removing process of the core removing mechanism is realized.

Drawings

FIG. 1 is a schematic structural diagram of a conventional product;

FIG. 2 is a schematic structural view of a core-releasing mechanism of the present invention;

FIG. 3 is an exploded view of the decoring mechanism shown in FIG. 2;

FIG. 4 is a schematic view of the assembly of the slanted insertion block with the first and second slides shown in FIG. 3 (the core release mechanism is in a mold closed state);

FIG. 5 is a schematic view of the structure of FIG. 4 with the decoring mechanism in a decored state;

FIG. 6 is an exploded view of FIG. 4;

FIG. 7 is a schematic view of the assembly of the core stripping mechanism of the present invention with a prior art product;

FIG. 8 is a schematic cross-sectional view of FIG. 7;

FIG. 9 is a schematic diagram of the core-pulling mechanism of the present invention.

The meaning of the reference symbols in the drawings is:

1 a-product; 11 a-upper end; 12 a-lower end; 13 a-a step portion;

100-a core-stripping mechanism;

1-an upper die assembly; 11-a limiting plate; 111-a limiting hole; 112-convex ring; 12-oblique inserting blocks; 120-screw hole; 121-a first raised slide rail; 1211-limit groove; 122-a second runner; 13-a screw; 14-an elastic abutment module; 141-a top rod; 142-an elastic member; 143-stop screw; 15-pins;

2-a lower die assembly; 21-cushion blocks; 211-a slide hole; 22-a first slider; 221-a first chute; 2211-limit boss; 23-a connecting rod; 24-a second slide; 241-a second raised slide rail;

3-an upper die main body; 31-an upper supporting plate; 32-upper foot pad; 33-a body spring; 34-an upper die holder; 35-pressing the blocks;

4-lower die main body; 41-lower limiting plate; 42-a lower positioning plate; 43-a lower die holder; 44-ejector pin.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 9, a core-pulling mechanism 100 according to an embodiment of the present invention is shown.

As shown in fig. 1, the core-pulling mechanism 100 includes an upper die assembly 1 and a lower die assembly 2, where the upper die assembly 1 includes a limit plate 11 and an inclined insert block 12 disposed on a side of the limit plate 11 facing the lower die assembly 2, and preferably, the limit plate 11 and the inclined insert block 12 may be connected by a screw 13, and the screw 13 may be screwed through the limit plate 11 and a screw hole 120 on the inclined insert block 12. The lower die assembly 2 comprises a cushion block 21 and a first sliding block 22 which is connected to one side of the cushion block 21 facing the upper die assembly 1 in a sliding mode and can be connected with the inclined insertion block 12 in a sliding mode, and the core removing mechanism 100 is set to be in a die closing state and a core removing state.

In the mold closing state of the core-releasing mechanism 100, the limiting plate 11 can abut against the inner wall of the upper end 11a of the product 1a, and the first slider 22 can abut against the inner wall of the lower end 12a of the product 1a and the inner wall of the step 13a of the product 1 a.

In the depoling state of the depoling mechanism 100, the limiting plate 11 and the inclined insertion block 12 can move towards the direction far away from the lower die assembly 2, and the first sliding block 22 can slide relative to the inclined insertion block 12 and gradually approach the axis of the depoling mechanism 100 until the lower die assembly 2 can be released from the upper end 11a of the product 1 a.

In the core-pulling mechanism 100, in the mold closing state of the core-pulling mechanism 100, the limit plate 11 can abut against the inner wall of the upper end 11a of the product 1a, and the first slider 22 can abut against the inner wall of the lower end 12a of the product 1a and the inner wall of the step part 13a of the product 1a, so that the angle R outside the step part 13a and the height from the bottom of the lower end 12a of the product 1a to the step part 13a are ensured; in the core removing state of the core removing mechanism 100, the limiting plate 11 and the inclined insertion block 12 can move in the direction away from the lower die assembly 2, and the first sliding block 22 can slide relative to the inclined insertion block 12 and gradually approach to the axis of the core removing mechanism 100 until the lower die assembly 2 can be removed from the upper end 11a of the product 1a, so that the core removing process of the core removing mechanism 100 is realized.

In one embodiment, to ensure that the lower die assembly 2 can be removed from the upper end 11a of the product 1a, the cross-sectional dimension of the pad 21 should be smaller than the cross-sectional dimension of the inner wall of the upper end 11a of the product 1 a.

In an embodiment, as shown in fig. 2, 3 and 8, the lower die assembly 2 further includes a connecting rod 23, and the connecting rod 23 is slidably connected to the block 21 along a radial direction of the core removing mechanism 100 and is connected to the first slider 22, so as to mount the first slider 22 on the block 21 and enable the first slider 22 to slide relative to the block 21 along the radial direction of the core removing mechanism 100.

In an embodiment, as shown in fig. 3 and 8, the pad block 21 is provided with a slide hole 211, and a cross section of the slide hole 211 along a direction perpendicular to an axis of the core removing mechanism 100 is an oblong cross section extending along a radial direction of the core removing mechanism 100.

The connecting rod 23 passes through the sliding hole 211 to be connected with the first sliding block 22, so that the first sliding block 22 can slide relative to the cushion block 21 along the radial direction of the core-pulling mechanism 100.

In an embodiment, as shown in fig. 2 to 9, the first sliding block 22 is provided in a plurality, the first sliding blocks 22 are provided in a plurality along the circumferential direction of the oblique insertion block 12, and a gap is formed between two adjacent first sliding blocks 22. By arranging a plurality of first sliding blocks 22, the supporting of the step part 13a of the product 1a is enhanced, and the angle of the R angle outside the step part 13a and the height from the bottom of the lower end 12a of the product 1a to the step part 13a are ensured.

Further, a plurality of connecting rods 23 are provided, and the plurality of connecting rods 23 and the first sliding blocks 22 are arranged in a one-to-one correspondence manner, so that each first sliding block 22 can slide relative to the cushion block 21 along the radial direction of the core-pulling mechanism 100.

In other embodiments not shown in the drawings, a plurality of connecting rods may be correspondingly disposed on each first sliding block to enhance the connection of the first sliding blocks. It can be understood that each first sliding block is provided with at least one corresponding connecting rod, and when a plurality of corresponding connecting rods are provided for each first sliding block, a plurality of corresponding connecting rods for the same first sliding block are located in the same plane intersecting with the axis of the core-pulling mechanism, so as to ensure that the first sliding blocks can slide along the radial direction of the core-pulling mechanism.

In one embodiment, as shown in fig. 5, 6 and 8, a cross section of the inclined insertion block 12 along the axial direction of the core removing mechanism 100 is trapezoidal, and a width of the cross section of the inclined insertion block 12 along the axial direction of the core removing mechanism 100 is gradually increased from a direction close to the lower mold assembly 2 to a direction away from the lower mold assembly 2, that is, a cross section of the inclined insertion block 12 along the axial direction of the core removing mechanism 100 is inverted trapezoidal, and a distance between an outer wall of the inclined insertion block 12 and the axial line of the core removing mechanism 100 is gradually increased from a direction close to the lower mold assembly 2 to a direction away from the lower mold assembly 2.

The cross section of the first slider 22 along the axial direction of the core-pulling mechanism 100 is trapezoidal, and the width of the cross section of the first slider 22 along the axial direction of the core-pulling mechanism 100 gradually decreases from the direction close to the lower die assembly 2 to the direction away from the lower die assembly 2, that is, the cross section of the inclined insert block 12 along the axial direction of the core-pulling mechanism 100 is trapezoidal.

By configuring the shapes of the oblique insertion block 12 and the first slider 22, when the oblique insertion block 12 moves along the axis of the core removing mechanism 100, the first slider 22 slides relative to the oblique insertion block 12, so that the first slider 22 can be ensured to gradually approach the axis of the core removing mechanism 100.

In an embodiment, as shown in fig. 6, a first protrusion slide rail 121 is formed on a side wall of the oblique insertion block 12, a first sliding groove 221 adapted to the first protrusion slide rail 121 is formed on the first slider 22 at a position corresponding to the first protrusion slide rail 121, and the first protrusion slide rail 121 is slidably connected to the first sliding groove 221 to realize the sliding connection between the oblique insertion block 12 and the first slider 22.

Preferably, the cross section of the first protruding sliding rail 121 is trapezoidal, and the width of the first protruding sliding rail 121 gradually decreases from one side away from the axis of the core removing mechanism 100 to one side close to the axis of the core removing mechanism 100. The shape of the cross section of the first sliding groove 221 is adapted to the shape of the cross section of the first protruding sliding rail 121, and the width of the first sliding groove 221 is also gradually reduced from one side away from the axis of the core-pulling mechanism 100 to one side close to the axis of the core-pulling mechanism 100. Through setting up first protruding slide rail 121 with the shape of first spout 221 prevents oblique inserted block 12 when keeping away from lower mould component 2's direction motion, first slider 22 with oblique inserted block 12 breaks away from, guarantees first slider 22's motion.

In other embodiments not shown in the drawings, a first sliding groove may be formed on a side wall of the oblique insertion block, and a first protruding sliding rail is formed on the first sliding block, so that sliding connection between the first sliding block and the oblique insertion block is ensured, and the first sliding block and the oblique insertion block are not separated.

In an embodiment, as shown in fig. 6, an outer wall of the first protruding sliding rail 121 is recessed toward an axial direction of the core removing mechanism 100 to form a limiting groove 1211, and a groove bottom surface a of the limiting groove 1211 is parallel to the axial direction of the core removing mechanism 100.

The groove bottom of the first sliding groove 221 protrudes towards the axial direction of the core-pulling mechanism 100 to form a limiting boss 2211, and a side surface b, close to the axial direction of the core-pulling mechanism 100, of the limiting boss 2211 is parallel to the axial direction of the core-pulling mechanism 100, that is, the groove bottom surface a of the limiting groove 1211 is always parallel to a side surface b, close to the axial direction of the core-pulling mechanism 100, of the limiting boss 2211.

In the mold closing state of the core release mechanism 100, a gap is formed between the groove bottom surface a of the limit groove 1211 and the limit boss 2211.

In the core-releasing state of the core-releasing mechanism 100, the first sliding block 22 can slide relative to the inclined insertion block 12 and gradually approach to the axis of the core-releasing mechanism 100 until the groove bottom a of the limiting groove 1211 abuts against the limiting boss 2211.

When the first protrusion slide rail 121 slides to a predetermined position relative to the first slide groove 221, due to the interaction between the limiting groove 1211 and the limiting projection 2211, the inclined insertion block 12 and the first slide block 22 cannot slide relative to each other, and under the mutual cooperation between the first protrusion slide rail 121 and the first slide groove 221, the first slide block 22 cannot be separated from the inclined insertion block 12, so that the lower mold assembly 2 can be driven to move upward and be separated from the upper end 11a of the product 1 a.

Further, the depth of the limiting groove 1211 gradually increases from a direction approaching the lower mold assembly 2 to a direction away from the lower mold assembly 2.

The distance between the side surface b of the limit boss 2211 close to the axis of the core-pulling mechanism 100 and the groove bottom of the first sliding groove 22 gradually increases from the direction close to the lower die assembly 2 to the direction far away from the lower die assembly 2.

In an embodiment, as shown in fig. 2 to 9, the first sliding block 22 is provided in plurality, the lower die assembly 2 further includes a plurality of second sliding blocks 24 slidably connected to the inclined insertion block 12, the plurality of second sliding blocks 24 and the plurality of first sliding blocks 22 are arranged at intervals along the circumferential direction of the inclined insertion block 12, and the second sliding blocks 24 are in sliding contact with the adjacent first sliding blocks 22.

In the mold closing state of the core-releasing mechanism 100, both the first slider 22 and the second slider 24 can abut against the inner wall of the lower end 12a of the product 1a and the inner wall of the step part 13a of the product 1a, so as to enhance the support of the step part 13a of the product 1a, and ensure the angle of the R-angle outside the step part 13a and the height from the bottom of the lower end 12a of the product 1a to the step part 13 a.

In the core removing state of the core removing mechanism 100, the second slider 24 can slide relative to the inclined insertion block 12 and gradually approach to the axis of the core removing mechanism 100, meanwhile, as the first slider 22 slides relative to the cushion block 21 in the axis direction of the core removing mechanism 100, the second slider 24 moves in the direction away from the cushion block 21 under the combined action of the first slider 22 and the inclined insertion block 12, but the moving distance of the second slider 24 is smaller than that of the inclined insertion block 12.

In an embodiment, as shown in fig. 6, a second sliding groove 122 is formed on a side wall of the oblique insertion block 12, a second protruding sliding rail 241 adapted to the second sliding groove 122 is formed on the second slider 24 at a position corresponding to the second sliding groove 122, and the second protruding sliding rail 241 is slidably connected to the second sliding groove 122, so as to achieve the sliding connection between the oblique insertion block 12 and the second slider 24.

Preferably, the cross section of the second protruding sliding rail 241 is shaped like a diamond, the shape of the cross section of the second sliding groove 122 is matched with the shape of the cross section of the second protruding sliding rail 241, and is also shaped like a diamond, and by setting the shapes of the second protruding sliding rail 241 and the second sliding groove 122, the second sliding block 24 is prevented from being separated from the inclined insertion block 12 when the inclined insertion block 12 moves in the direction away from the lower die assembly 2, so that the movement of the second sliding block 24 is ensured.

In an embodiment, as shown in fig. 3 and 8, the upper die assembly 1 further includes a plurality of elastic abutting modules 14 disposed on the limiting plate 11.

In the mold closed state of the core release mechanism 100, some of the elastic abutment modules 14 may abut against the first slide 22, and the other elastic abutment modules 14 may abut against the second slide 24.

By providing the elastic abutment module 14, the inclined insertion block 12 can be ensured to be separated from the lower die assembly 2 in the core removing process of the core removing mechanism 100.

In an embodiment, as shown in fig. 3 and 8, the limiting plate 11 is provided with a limiting hole 111, the elastic abutting module 14 includes a top rod 141, an elastic member 142 and a stop screw 143, the top rod 141 and the elastic member 142 are disposed in the limiting hole 111, the stop screw 143 is disposed at an opening of one end of the limiting hole 111 facing away from the lower mold component 2, the elastic member 142 is supported between the top rod 141 and the stop screw 143, and the top rod 141 can be partially exposed out of the limiting hole 111 and open at one end facing the lower mold component 2 to abut against the first slider 22 or the second slider 24.

In an embodiment, as shown in fig. 3 and 8, the upper die assembly 1 further includes a pin 15 disposed between the limiting plate 11 and the inclined insert 12, and the pin 15 is disposed to provide a guide for the installation and connection of the limiting plate 11 and the inclined insert 12, so as to prevent the upper die assembly from deflecting during installation.

In an embodiment, as shown in fig. 9, the core removing assembly 100 further includes an upper mold body 3 and a lower mold body 4, and at this time, the core removing assembly 100 will form a complete mold opening device, so as to realize the whole mold opening process.

In an embodiment, as shown in fig. 8, the upper mold main body 3 includes an upper supporting plate 31, an upper pad 32, a body spring 33, an upper mold seat 34, and an upper pressing block 35, the upper mold seat 34, the upper pad 32, and the upper supporting plate 31 are sequentially disposed in a direction away from the lower mold assembly 2, and the body spring 33 is supported between the upper supporting plate 31 and the limiting plate 11.

In the mold closing state of the core releasing mechanism 100, the upper press block 35 can abut against the outer wall of the upper end 11a of the product 1a and the outer wall of the step 13a of the product 1 a.

In the core-releasing state of the core-releasing mechanism 100, the upper press block 35 can drive the limiting plate 11 to move towards the direction far away from the lower die assembly 2.

Preferably, the periphery of the limiting plate 11 is provided with a convex ring 112 which can be clamped with the upper pressing block 35, and when the upper die main body 3 moves towards the direction far away from the lower die assembly 2, the upper pressing block 35 can be clamped with the convex ring 112, so as to drive the limiting plate 11 to move.

In an embodiment, as shown in fig. 9, the lower die body 4 includes a lower limiting plate 41, a lower positioning plate 42, a lower die holder 43 and an ejector rod 44, the lower limiting plate 41, the lower positioning plate 42 and the lower die holder 43 are sequentially disposed in a direction away from the upper die assembly 1, the ejector rod 44 is disposed on a side of the lower limiting plate 41 facing away from the upper die assembly 1 and can be in sliding contact with the lower die holder 43 and the ejector rod 44, that is, the lower die holder 43 and the ejector rod 44 are respectively in sliding connection with the ejector rod 44.

The lower limiting plate 41 can abut against the outer wall of the lower end 11a of the product 1 a.

The working principle of the core removing assembly provided by the embodiment of the invention is as follows:

(1) in the mold-closed state of the core-releasing mechanism 100:

the upper pressing block 35 abuts against the outer wall of the upper end 11a of the product 1a and the outer wall of the step part 13a of the product 1a, the limiting plate 11 abuts against the inner wall of the upper end 11a of the product 1a, the first sliding block 22 and the second sliding block 24 abut against the inner wall of the lower end 12a of the product 1a and the inner wall of the step part 13a of the product 1a, and the lower limiting plate 41 abuts against the outer wall of the lower end 11a of the product 1a to guarantee the angle of the R angle outside the step part 13a and the height from the bottom of the lower end 12a of the product 1a to the step part 13 a.

(2) In the decored state of the decoring mechanism 100:

the upper die main body 3 moves towards the direction far away from the lower die assembly 2, and the upper die assembly 1 is ejected out from the upper pressing plate 35 under the action of the body spring 33 until the upper pressing plate 35 is clamped with the convex ring 112 on the limiting plate 11.

Then, the upper die body 3 drives the limit plate 11 and the inclined insert block 12 to move in a direction away from the lower die assembly 2, so that the first slider 22 and the second slider 24 respectively slide relative to the inclined insert block 12 and gradually approach to the axis of the core-pulling mechanism 100 until the bottom surface of the limit groove 1211 of the inclined insert block 12 abuts against the limit boss 2211 of the first slider 22, the inclined insert block 12 cannot slide relative to the first slider 22 and the second slider 24, and the first slider 22 and the second slider 24 cannot be separated from the inclined insert block 12 even under the mutual matching of the first protruding slide rail 121 and the first slide groove 221 and the mutual matching of the second protruding slide rail 241 and the second slide groove 122, so that the lower die assembly 2 can be driven to move upwards and be pulled out from the upper end 11a of the product 1 a. In this process, since the frictional force between the product 1a and the lower retainer plate 41 is greater than the frictional force between the product 1a and the upper die assembly 1, the product 1a will remain on the lower die body 4.

Finally, the product 1a remaining on the lower die body 4 is taken out.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.