CN216579031U

CN216579031U - Eccentric injection mold is prevented to slender core

Info

Publication number: CN216579031U
Application number: CN202122871257.2U
Authority: CN
Inventors: 廖博华; 林振昌; 陈海洲; 陈维君
Original assignee: Xiamen Jixinda Precision Technology Co ltd
Current assignee: Xiamen Jixinda Precision Technology Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-24
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses an anti-eccentricity injection mold for a slender core, which comprises an upper mold, a lower mold, two groups of core positioning mechanisms, a movable block ejector rod, a long core, a core connecting block and a core oil cylinder, wherein the upper mold is provided with a first positioning mechanism and a second positioning mechanism; the two sets of core positioning mechanisms are respectively installed on the upper die and the lower die, the movable block is movably installed in the lower die, the movable block ejection rod is arranged between the movable block and the lower die, the cylinder body of the core oil cylinder is fixed on the outer wall of the movable block, the piston rod end of the core oil cylinder is connected with the outer end of the long core through a core connecting block, and the inner end of the long core extends into a parting surface between the upper die and the lower die. When the mold is opened, the inner needle of the ejector cylinder on the two sets of core positioning mechanisms is separated from the long core, so that smooth demolding of a fed product is ensured, the movable block ejects a plastic product under the action of the movable block ejecting rod, and the mold has the advantages of stable demolding action and reliable core positioning.

Description

Eccentric injection mold is prevented to slender core

Technical Field

The utility model relates to an injection mold, in particular to an anti-eccentric injection mold for a slender core.

Background

The sliding plastic injection mold is a tool for producing plastic products and has wide application. In the injection molding of plastic products, because some plastic products 10 (as shown in fig. 1) have long deep grooves, the cores used for molding are too long, the pressure at the sprue is high during injection, and the cores are deformed to the place without injection. It is desirable to develop a mechanism for positioning particularly long cores.

Disclosure of Invention

The utility model aims to provide an anti-eccentricity injection mold for a slender core, which is stable in demolding action and reliable in core positioning.

In order to achieve the purpose, the technical solution of the utility model is as follows:

the utility model relates to an anti-eccentricity injection mold for a slender core, which comprises an upper mold, a lower mold, two groups of core positioning mechanisms, a movable block ejection rod, a long core, a core connecting block and a core oil cylinder, wherein the upper mold is provided with a first mold cavity and a second mold cavity; the two groups of core positioning mechanisms are respectively arranged on the upper die and the lower die and are arranged oppositely, the movable block is movably arranged in the lower die, the inner end of the movable block is abutted against a sliding block in the core positioning mechanism, and the movable block ejection rod is arranged between the movable block and the lower die; the cylinder body of the core oil cylinder is fixed on the outer wall of the movable block, the rod end of a piston rod of the core oil cylinder is connected with the outer end of the long core through a core connecting block, and the inner end of the long core extends into a parting surface between the upper die and the lower die.

The core positioning mechanism comprises a sliding block oil cylinder, a wedge connecting block, a wedge, a sliding block, an inner guide pillar, a needle fixing plate and an ejector sleeve outer needle; the cylinder body of slider hydro-cylinder is fixed mounting on the outer wall of last mould or lower mould and is located the outer wall of last mould or lower mould of keeping away from the core hydro-cylinder, the piston rod end of slider hydro-cylinder is connected with the outer end of slide wedge through the slide wedge connecting block, the slide wedge cunning is in last mould or lower mould, the interior inclined plane of slide wedge supports with the outer inclined plane of slider and leans on, the outer end of interior guide pillar is fixed at the slider, on the needle fixed plate, fix its slider and needle fixed plate and pin, the outer end of department's section of thick bamboo outer needle is fixed on the needle fixed plate, the inner of department's section of thick bamboo inner needle stretches into the die cavity and supports with the lateral wall of long core and leans on for the location of long core.

The inner inclined plane of the inclined wedge and the outer inclined plane of the sliding block are of a groove block matching structure.

The utility model also includes a ramp block; the upper end of the inclined pressing block is fixed on the upper die, and the lower end of the inclined pressing block abuts against an inclined plane on the outer side of the core connecting block to lock the core connecting block.

And a guide mechanism is arranged between the upper die and the lower die.

After the scheme is adopted, the utility model comprises an upper die, a lower die, two groups of core positioning mechanisms, movable blocks, movable block ejector rods, long cores, core connecting blocks and core oil cylinders, wherein the two groups of core positioning mechanisms position the long cores from the upper direction and the lower direction during injection molding, and when the die is opened, inner needles of ejector cylinders on the two groups of core positioning mechanisms are separated from the long cores, so that smooth demolding of a fed product is ensured, and the movable blocks eject the plastic product under the action of the movable block ejector rods.

The utility model is further described with reference to the following figures and specific embodiments.

Drawings

FIG. 1 is an isometric view of a plastic article;

FIG. 2 is an isometric view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is an isometric view of the core positioning mechanism of the present invention;

FIG. 6 is a schematic view of a first step of opening the mold according to the present invention;

FIG. 7 is a schematic view of a second step of opening the mold according to the present invention;

FIG. 8 is a schematic view of a third step of opening the mold according to the present invention;

FIG. 9 is a schematic view of the fourth step of opening the mold according to the present invention.

Detailed Description

As shown in figures 2-4, the utility model relates to an anti-eccentricity injection mold for a slender core, which comprises an upper mold 1, a lower mold 2, two groups of core positioning mechanisms 3, a movable block 4, a movable block ejection rod 5, a long core 6, a core connecting block 7, a core oil cylinder 8 and an inclined pressing block 9.

The upper die 1 and the lower die 2 are arranged oppositely and connected through a guide mechanism, two groups of core positioning mechanisms 3 are respectively arranged on the upper die 1 and the lower die 2 and are arranged oppositely, a movable block 4 is movably arranged in the lower die 2, the inner end of the movable block 4 is abutted against a slide block in the core positioning mechanism 3, and a movable block ejection rod 5 is arranged between the movable block 4 and the lower die 2; the cylinder body of the core oil cylinder 8 is fixed on the outer wall of the movable block 4, the piston rod end of the core oil cylinder 8 is connected with the outer end of the long core 6 through a core connecting block 7, and the inner end of the long core 6 extends into a parting surface between the upper die 1 and the lower die 2. The upper end of the inclined pressing block 9 is fixed on the upper die 1, and the lower end of the inclined pressing block 9 abuts against the inclined plane on the outer side of the core connecting block 7 to lock the core connecting block 7.

As shown in fig. 4 and 5, the core positioning mechanism 3 includes a slider cylinder 31, a wedge connecting block 32, a wedge 33, a slider 34, an inner guide post 35, a needle fixing plate 36, and a slave cylinder outer needle 37; the cylinder body of the slide block oil cylinder 31 is fixedly installed on the outer wall of the upper die 1 or the lower die 2 and is positioned on the outer wall of the upper die 1 or the lower die 2 far away from the core oil cylinder 8, the piston rod end of the slide block oil cylinder 31 is connected with the outer end of the wedge 33 through the wedge connecting block 32, the wedge 33 is slidably connected in the upper die 1 or the lower die 2, the inner inclined plane 331 of the wedge 33 is abutted against the outer inclined plane 341 of the slide block 34, and in the embodiment, the inner inclined plane 331 of the wedge 33 and the outer inclined plane 341 of the slide block 34 are in a slot block matching structure; the outer end of the inner guide post 35 is fixed on the sliding block 34 and the needle fixing plate 36, the sliding block 34 and the needle fixing plate 36 are fixedly locked, the outer end of the ejector outer needle 37 is fixed on the needle fixing plate 36, and the inner end of the ejector inner needle 38 extends into the cavity and abuts against the side wall of the long core 6 for positioning the long core 6. It should be noted that: the inner ends described above all are based on parting planes.

The working principle of the utility model is as follows:

1. as shown in fig. 4 and 5, during injection molding, two sets of core positioning mechanisms 3 position two sides of the long core 6 from the upper and lower directions;

2. as shown in fig. 6, when the mold is opened, the slide block oil cylinders 31 on the two sets of core positioning mechanisms 3 draw out the wedges 33 through the wedge connecting blocks 32, and the wedges 33 drive the slide blocks 34 and the needle fixing plates 36 to separate the inner needles 38 of the ejector sleeve from the long cores 6, so that the smooth demolding of the fed products 10 is ensured;

3. as shown in fig. 7, the upper mold 1 is separated from the lower mold 2;

4. as shown in fig. 8, the movable block 4 is lifted up by the movable block ejection rod 5 to eject the plastic product 10 sleeved on the long core 6;

5. as shown in fig. 9, the core cylinder 8 mounted on the movable block 4 then extracts the long core 6 from the plastic 10 through the core connection block 7.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the utility model, which is defined by the appended claims and their equivalents and modifications within the scope of the description.

Claims

1. The utility model provides an eccentric injection mold is prevented to slender core which characterized in that: the core positioning device comprises an upper die, a lower die, two groups of core positioning mechanisms, a movable block ejector rod, a long core, a core connecting block and a core oil cylinder; the two groups of core positioning mechanisms are respectively arranged on the upper die and the lower die and are arranged oppositely, the movable block is movably arranged in the lower die, the inner end of the movable block is abutted against a sliding block in the core positioning mechanism, and the movable block ejection rod is arranged between the movable block and the lower die; the cylinder body of the core oil cylinder is fixed on the outer wall of the movable block, the rod end of a piston rod of the core oil cylinder is connected with the outer end of the long core through a core connecting block, and the inner end of the long core extends into a parting surface between the upper die and the lower die.

2. The elongate core anti-eccentricity injection mold according to claim 1, wherein: the core positioning mechanism comprises a sliding block oil cylinder, a wedge connecting block, a wedge, a sliding block, an inner guide pillar, a needle fixing plate, a sleeve ejector outer needle and a sleeve ejector inner needle; the cylinder body of slider hydro-cylinder is fixed mounting on the outer wall of last mould or lower mould and is located the outer wall of last mould or lower mould of keeping away from the core hydro-cylinder, the piston rod end of slider hydro-cylinder is connected with the outer end of slide wedge through the slide wedge connecting block, the slide wedge cunning is in last mould or lower mould, the interior inclined plane of slide wedge supports with the outer inclined plane of slider and leans on, the outer end of interior guide pillar is fixed at the slider, on the needle fixed plate, fix its slider and needle fixed plate and pin, the outer end of department's section of thick bamboo outer needle is fixed on the needle fixed plate, the inner of department's section of thick bamboo inner needle stretches into the die cavity and supports with the lateral wall of long core and leans on for the location of long core.

3. The elongate core anti-decentration injection mold according to claim 2, wherein: the inner inclined plane of the inclined wedge and the outer inclined plane of the sliding block are of a groove block matching structure.

4. The elongate core anti-eccentricity injection mold according to claim 1, wherein: the device also comprises an inclined pressing block; the upper end of the inclined pressing block is fixed on the upper die, and the lower end of the inclined pressing block abuts against an inclined plane on the outer side of the core connecting block to lock the core connecting block.

5. The elongate core anti-eccentricity injection mold according to claim 1, wherein: and a guide mechanism is arranged between the upper die and the lower die.