CN219044093U

CN219044093U - Slider core-pulling mechanism of front mould elastic block

Info

Publication number: CN219044093U
Application number: CN202223327487.3U
Authority: CN
Inventors: 宋宗燎; 王乐华; 丁玉
Original assignee: Suzhou Jinghuisi Mould Co ltd
Current assignee: Suzhou Jinghuisi Mould Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-19
Anticipated expiration: 2032-12-12

Abstract

The utility model belongs to the field of injection molds, and relates to a slide block core pulling mechanism of a front mold elastic block, which comprises a front mold plate and a front mold core assembly, wherein the front mold core assembly is arranged in a mold core cavity of the front mold plate; the front mould core assembly comprises a front mould elastic block and a front mould core, and the front mould core is embedded in a mould core hole of the front mould elastic block; a plurality of sliding blocks are arranged on the front mould elastic block in a sliding manner, the inner ends of the sliding blocks are inverted buckle forming ends, and the inverted buckle forming ends are used for forming inverted buckles of products; the outer end of the sliding block is provided with a T-shaped groove penetrating through the sliding block, and the bottom of the T-shaped groove is inclined inwards; the front template is fixedly provided with a slide block guide block for applying an outward pulling force to the slide block, the slide block guide block is provided with an inclined T-shaped table matched with the T-shaped groove, the inclined T-shaped table is inserted into the T-shaped groove, and when the front elastic block is stressed upwards, the slide block slides outwards along the inclined T-shaped table. The utility model is used for core pulling when the back-off structure of the injection molding product is adopted, the production stability of the mold is good, the clamping opening of the appearance surface of the product has no step difference, and the utility model is suitable for one mold with multiple holes.

Description

Slider core-pulling mechanism of front mould elastic block

Technical Field

The utility model belongs to the field of injection molds, and particularly relates to a slide block core pulling mechanism of a front mold elastic block.

Background

The front mould slide block core pulling mechanism is one of the common mechanism forms of injection mould, mainly solves the demoulding of the back-off structure on the appearance surface of the injection molding product, and the traditional solution is as follows:

1. the front mould is added with a spring plate, and the elastic force generated by the spring plate is used for driving the sliding block mechanism to loose core;

2. an independent oil cylinder is added, and the oil cylinder drives a sliding block mechanism to loose core, for example, the utility model patent of application number CN201611086974.1 describes: the C oil cylinder drives the C sliding block to move, the C core-pulling block is directly pulled out and separated from the product, meanwhile, the B core-pulling block is contracted centripetally, and the hook-fastening molded surface is separated from the annular back-fastening of the product; the A cylinder drives the A sliding block to move so that the A core-pulling block is directly separated from the product, and the core is pulled out and demoulded by the annular back-off structure of the injection molding product;

3. the front mould is made oblique out of the back-off mechanism, etc., for example, the utility model patent of application number CN201020584691.1 describes that the core slides and sets up the inner slide of the concave shape, the inboard of the inner slide of the concave shape passes the core and cooperates with back-off, and leave the interval between the inner wall of core, the outside top of the inner slide of the concave shape is made to have oblique to make the groove, connect the oblique to make the piece in the cavity, oblique to make the groove cooperate with oblique to make the piece in with, open and close the mould power to drive the slide to slide inwards and take off the back-off by the mould.

In production practice, the structure of these mechanisms is relatively complicated, the mould volume is easy to increase, the stability of the mould can be influenced during use, and especially when the periphery of the appearance surface of a plastic part product is provided with a back-off structure, when the periphery is required to be loose core by the front mould sliding blocks, the combined part between the two sliding blocks is difficult to carry out combined mould saving (polishing) treatment, the defect of poor clamping mouth section of the appearance surface of the plastic part product is easy to be caused, one mould is difficult to realize, and the improvement of injection molding production efficiency is not facilitated.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a slide block core pulling mechanism of a front mould elastic block, which is used for pulling a core during the back-off structure of an injection molding product, ensures that the stability of the injection molding production of a mould is good, has no section difference of a clamping opening of an appearance surface of the product, and is suitable for multiple cavities of one mould.

The utility model provides a slide block core pulling mechanism of a front mould elastic block, which comprises a front mould plate and a front mould core assembly, wherein the front mould plate is provided with a mould core cavity, and the front mould core assembly is arranged in the mould core cavity;

the front die core assembly comprises a front die elastic block and a front die core, the front die core is embedded in a die core hole of the front die elastic block, and a forming cavity is formed in the top of the front die core;

the front mould elastic block is provided with a plurality of sliding type sliding blocks, the inner ends of the sliding blocks are inverted buckle forming ends, and the inverted buckle forming ends are used for forming inverted buckle structures of products; the outer end of the sliding block is provided with a T-shaped groove penetrating through the sliding block, and the bottom of the T-shaped groove is inclined inwards;

the front template is fixedly provided with a slide block guide block, the slide block guide block is used for guiding the movement of the slide block, the slide block guide block is provided with an inclined T-shaped table matched with the T-shaped groove, the inclined T-shaped table is inserted into the T-shaped groove, and when the front module elastic block is stressed upwards, the slide block slides outwards along the inclined T-shaped table.

Preferably, the left side and the right side of the sliding block are provided with outer bosses; the front mould bullet piece is last to be equipped with the slider constant head tank, front mould bullet piece top installation clamp plate, every clamp plate is pressed simultaneously in the outer boss top of two adjacent sliders, outer boss's lateral wall and roof can laminate respectively the slider constant head tank with the clamp plate slides.

Preferably, the inner end surface of the slide block guide block and the outer end surface of the slide block are mutually matched inclined surfaces, and the inclined surfaces are the same as the inclination angles of the T-shaped grooves.

Preferably, the side all around of product is equipped with the back-off structure, and a plurality of sliders distribute around the shaping chamber of product, and adjacent two during the compound die the part closely laminates between the slider.

Preferably, the sliding blocks and the top surface of the pressing plate are all located on the same horizontal plane.

Preferably, a guide post is installed in the front mold core, the tail part of the guide post is fixed in the front mold core, the head part of the guide post is inserted into a post hole of the front mold elastic block, and the guide post is used for guiding the up-and-down movement of the front mold elastic block.

Preferably, a nitrogen spring is arranged in the cavity of the die core, and the upper end and the lower end of the nitrogen spring are respectively and fixedly connected with the bottom surface of the front die elastic block and the front die plate.

Preferably, at least two cavity modules are arranged on the front template, one of the slide block guide blocks is connected with two adjacent cavity modules, and the opposite ends of the slide block guide block are respectively provided with the inclined T-shaped table.

The beneficial effects of the utility model are as follows:

according to the utility model, a plurality of sliding blocks are slidably arranged on a front mould elastic block, the outer ends of the sliding blocks are provided with T-shaped grooves penetrating through the sliding blocks, and the bottoms of the T-shaped grooves incline inwards; and the slide block guide block is fixedly installed on the front template, the inclined T-shaped table of the slide block guide block is inserted into the T-shaped groove, and when the front mould elastic block is stressed upwards, the inclined T-shaped table applies an outward tensile force to the slide blocks, so that each slide block simultaneously slides outwards along the inclined T-shaped table, and synchronous core pulling of a plurality of groups of slide blocks is realized.

The left side and the right side of the sliding block are provided with outer bosses, the front mould elastic block is provided with a sliding block positioning groove, and the sliding block is positioned in the sliding block positioning groove; the clamp plate is installed at front mould bullet piece top, and the outer boss of slider is pushed down to the clamp plate, and when front mould bullet piece atress goes up, the lateral wall and the roof of outer boss laminating slider constant head tank and clamp plate outwards slide respectively, have guaranteed the stability that the slider removed.

When the front mold sliding blocks are needed to loose core around the appearance surface of the plastic part product, the combined part between the adjacent sliding blocks can be subjected to combined mold saving (polishing) treatment, so that the defect of poor clamping section of the appearance surface of the plastic part product is avoided. The slide block core-pulling structure can realize one die with multiple cavities, and is beneficial to improving the injection molding production efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the mounting structure of the present utility model;

FIG. 2 is an enlarged schematic view of the portion A of FIG. 1;

FIG. 3 is a schematic view of a front mold core assembly according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a front mold insert assembly according to the present utility model;

FIG. 5 is another cross-sectional schematic view of a front mold insert assembly according to the present utility model;

fig. 6 is a schematic view of the front mold core assembly according to another view angle.

Marked in the figure as: 1. a front template; 2. a cavity of the mold core; 3. a front mould spring block; 4. a front mold core; 5. a mold core hole; 6. a molding cavity; 7. a slide block; 8. a back-off forming end; 9. a T-shaped groove; 10. a slider guide block; 11. an inclined T table; 12. an outer boss; 13. a slide block positioning groove; 14. a pressing plate; 15. an inclined plane; 16. a guide post; 17. a sleeve; 18. a nitrogen spring; 19. and (5) a product.

Detailed Description

As shown in fig. 1 to 6, the present embodiment provides a slide block core pulling mechanism of a front mold elastic block, which is used for demolding core pulling of a product with a back-off structure all around, and referring to fig. 1, the slide block core pulling mechanism includes a front mold plate 1 and a front mold core 4 assembly, the front mold plate 1 is provided with a plurality of mold core cavities 2, the present embodiment uses two mold core cavities as an example for illustration, and the front mold core assembly is installed in the mold core cavity 2.

Referring to fig. 3 and 4, the front mold insert assembly includes a front mold insert 3 and a front mold insert 4, the front mold insert 3 has a plate-like structure, a mold insert hole 5 is provided in the middle of the front mold insert 3, the upper side of the front mold insert 4 is embedded in the mold insert hole 5, and a molding cavity 6 profiling the product is provided at the top of the front mold insert 4.

The front mould elastic block 3 is provided with a plurality of sliding blocks 7 in a sliding manner, in this embodiment, four sliding blocks 7 are arranged in each cavity for illustration, the four sliding blocks 7 are distributed around the forming cavity of the product 19, and the adjacent two sliding blocks are closely attached to each other at a position close to the inner end part during mould closing. The inner end of the sliding block 7 (i.e. the end close to the product forming cavity) is a back-off forming end 8, and the back-off forming end 8 is used for forming a back-off structure of the product. The outer end of the slider 7, i.e., the end opposite to the inverted molding end 8, is provided with a T-shaped groove 9, the T-shaped groove 9 penetrates the slider 7 in the up-down direction, and the bottom of the T-shaped groove 9 is inclined inward. The front template 1 is fixedly provided with the slide block guide blocks 10 by screws, and is used for applying external pulling force to the slide blocks 7, the slide block guide blocks 10 are provided with inclined T-shaped tables 11 matched with the T-shaped grooves 9, the inclined T-shaped tables 11 are inserted into the T-shaped grooves 9, when the front mould elastic block 3 is stressed upwards, each slide block 7 synchronously slides outwards along the inclined T-shaped tables 11, and the back-off structure of the product 19 is avoided, so that the demoulding of the product is realized.

Referring to fig. 6, the left and right sides of the slider 7 are provided with outer bosses 12, and the outer bosses 12 extend outwards from the bottom of the slider; the front die spring 3 is provided with a slide positioning groove 13, and the slide 7 is positioned in the slide positioning groove 13. The top of the front mould elastic block 3 is fixedly provided with pressing plates 14 by screws, four pressing plates 14 are arranged in each hole, and each pressing plate 14 can be pressed above two adjacent sliding blocks simultaneously. During demolding, the front mold elastic block 3 is forced to move upwards, the side wall and the top wall of the outer boss 12 are respectively attached to the slide block positioning groove 13 and the pressing plate 14 to slide outwards, and the moving stability of the slide block 7 is guaranteed. The outer boss 12 is positioned at the bottom of the sliding block 7, the pressing plate 14 is directly pressed above the outer boss 12, when the sliding block 7 needs to be disassembled, the screw of the pressing plate 14 is loosened, the pressing plate 14 is taken down, and then the sliding block 7 is pulled out upwards along the inclined T-shaped table 11.

The inner end face of the slide block guide block 10 and the outer end face of the slide block 7 are mutually matched inclined planes 15, and the inclination angles of the two inclined planes 15 are the same as the inclination angle of the T-shaped groove 9, so that the slide block 7 can be smoothly attached to the slide block guide block 10 to slide outwards.

The top surfaces of the slide block 7 and the pressing plate 14 are positioned on the same horizontal plane, so that the combined die-saving polishing treatment is convenient, and the defect of poor clamping section of the appearance surface of a plastic product is avoided.

Referring to fig. 5, a guide post 16 is installed in the front mold core 4, and a head of the guide post 16 is fixed in the front mold core 4, for example, but not limited to, the guide post is in threaded connection with the front mold core. The tail of the guide post 16 is inserted into a post hole of the front mould elastic block 3, and the guide post 16 is used for guiding the up-and-down movement of the front mould elastic block 3. The sleeve 17 is further installed in the column hole, the inner diameter of the sleeve 17 is matched with the outer diameter of the guide post 16, the guide post 16 is inserted into the sleeve 17, the sleeve is made of high-hardness alloy materials, friction between the guide post 16 and the front die elastic block 3 is reduced through the sleeve 17, and the service life of the front die elastic block 3 is prolonged.

Two nitrogen springs 18 are symmetrically arranged in each die cavity 2, the upper end and the lower end of each nitrogen spring 18 are respectively fixedly connected with the bottom surface of the front die elastic block 3 and the front die plate 1, and when the die is opened, the nitrogen springs 18 release pressure to drive the front die elastic block 3 to move upwards.

Because the front template 1 is formed with two cavity cavities 2, two adjacent cavity cavities 2 can share one slide block guide block, namely, the slide block guide block 10 positioned in the middle of the two cavity cavities is connected with the two cavity cavities 2, and the opposite ends of the slide block guide block 10 are provided with the inclined T-shaped tables 11, the slide block guide block 10 can guide the slide blocks in the two cavity cavities 2 at the same time, so that the die structure is more compact.

The working process of the utility model is as follows:

when the die is opened, the nitrogen spring 18 drives the front die elastic block 3 to ascend, under the cooperation of the T-shaped groove 9 between the slide block 7 and the slide block guide block 10 and the inclined T-shaped table 11, the inclined T-shaped table 11 applies an outward pulling force to the slide block 7, so that the outer convex table 12 of the slide block is attached to the pressing plate 14 to slide outwards, and synchronous core pulling of four groups of slide blocks is reliably realized; meanwhile, through the four guide posts 16, the stability and the flexibility of up-and-down movement of the front mould elastic block 3 and the four groups of sliding blocks are ensured.

When the die is closed, the front die elastic block 3 and the four groups of sliding blocks 7 are driven to move downwards by using the die clamping force for resetting.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The slide block core pulling mechanism of the front mould elastic block is characterized by comprising a front mould plate and a front mould core assembly, wherein the front mould plate is provided with a mould core cavity, and the front mould core assembly is arranged in the mould core cavity;

the front die core assembly comprises a front die elastic block and a front die core, the front die core is embedded in a die core hole of the front die elastic block, and a forming cavity copying a product is formed at the top of the front die core;

2. The core pulling mechanism of claim 1, wherein the inner end surface of the guide block and the outer end surface of the slider are mutually matched inclined surfaces, and the inclined surfaces are the same as the inclination angle of the T-shaped groove.

3. The slide block core pulling mechanism according to claim 2, wherein outer bosses are arranged on the left side and the right side of the slide block; the front mould bullet piece is last to be equipped with the slider constant head tank, front mould bullet piece top detachably installs the clamp plate, the lateral wall and the roof of outer boss can laminate respectively the slider constant head tank with the clamp plate slides.

4. A slide core pulling mechanism according to claim 3, wherein the outer bosses extend outwardly from the bottoms of the slides, and each pressing plate is pressed simultaneously over the outer bosses of two adjacent slides.

5. The slide block core pulling mechanism according to claim 3, wherein the four sides of the product are provided with reverse buckling structures, a plurality of slide blocks are distributed around the forming cavity of the product, and two adjacent slide blocks are partially and tightly attached during die assembly.

6. The slide core pulling mechanism according to claim 5, wherein: the sliding blocks and the top surface of the pressing plate are all located on the same horizontal plane.

7. The slide core pulling mechanism according to any one of claims 1 to 6, wherein: the front mold core is internally provided with a guide pillar, the tail part of the guide pillar is fixed in the front mold core, the head part of the guide pillar is inserted into a pillar hole of the front mold elastic block, and the guide pillar is used for guiding the up-and-down movement of the front mold elastic block.

8. The slide core pulling mechanism according to claim 7, wherein: and a nitrogen spring is arranged in the cavity of the die core, and the upper end and the lower end of the nitrogen spring are respectively and fixedly connected with the bottom surface of the front die elastic block and the front die plate.

9. The slide core pulling mechanism according to any one of claims 1 to 6, wherein: at least two die core cavities are arranged on the front template, one of the slide block guide blocks is connected with two adjacent die core cavities, and the inclined T-shaped tables are arranged at the opposite ends of the slide block guide blocks.