CN216442978U

CN216442978U - Improve mould of ferrite hole die joint burr of moulding plastics

Info

Publication number: CN216442978U
Application number: CN202122505198.7U
Authority: CN
Inventors: 杨龙; 王应扬
Original assignee: Hengdian Group DMEGC Magnetics Co Ltd
Current assignee: Hengdian Group DMEGC Magnetics Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-06
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a mold for improving injection molding ferrite inner hole parting surface burrs, which belongs to the technical field of injection molding and comprises a lower template, wherein a female mold is arranged above the lower template, a male mold is arranged above the female mold, an upper template is arranged above the male mold, an upper mold inner hole core with the end part positioned in a cavity is connected to the upper template, the upper mold inner hole core is statically assembled with the upper template, a lower mold inner hole core corresponding to the upper mold inner hole core is arranged inside the female mold, the contact surface of the upper mold inner hole core and the lower mold inner hole core is an inner hole parting surface, and a spring is arranged at the bottom of the lower mold inner hole core. Utility model lower mould hole core's bottom is equipped with the spring, and the spring plays and adjusts hole die joint complex effect, and when going up mould hole core and lower mould hole core wearing and tearing, the bounce-back effort of spring upwards pushes away lower mould hole core, ensures that the hole die joint cooperation is inseparable to avoid the hole die joint to produce and drape over one's shoulders cutting edge of a knife or a burr.

Description

Improve mould of ferrite hole die joint burr of moulding plastics

Technical Field

The utility model belongs to the technical field of injection molding, and particularly relates to a mold for improving burrs of an inner hole parting surface of an injection molding ferrite.

Background

In the process of producing injection molding ferrite by using a mold, the inner hole parting surface is burred or burred. This is influenced by several factors: the manufacturing precision of the die, the material of the die, the assembly precision of the die and the like. If there is the flash burr in injection moulding product hole, can influence product hole size, lead to the assembly undulant, also can cause the ferrite product of moulding plastics to produce the magnetic debris, bring the quality complaint.

The parting surface of an inner hole of the existing injection molding ferrite is tightly matched by an upper die forming core and a lower die forming core, and injection molding molten flow enters a die cavity. The upper and lower die forming cores are flatly bumped on the parting surface of the inner hole, the matching size is very high, burrs can be generated if the matching is not tight, and the cores can be extruded and damaged when the die is closed due to excessive matching. Therefore, in the prior art, the mould parts need to be maintained and replaced frequently, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a mold for improving burrs of an inner hole parting surface of injection molding ferrite, which has the characteristics of preventing parts from colliding and breaking when an upper mold core and a lower mold core of the mold are locked under high pressure, reducing the maintenance and replacement frequency of the mold and improving the production efficiency.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an improve mould plastics mould of ferrite hole die joint burr, including the lower bolster, the top of lower bolster is equipped with the die, the top of die is equipped with the terrace die, the top of terrace die is equipped with the cope match-plate pattern, the inside of die is equipped with the die cavity, be connected with the last mould hole core that the tip is located the die cavity on the cope match-plate pattern, go up mould hole core and cope match-plate pattern static assembly, the inside of die is equipped with and goes up the corresponding lower mould hole core of mould hole core, it is the hole die joint with the contact surface of lower mould hole core to go up the mould hole core, the bottom of lower mould hole core is equipped with the spring, the spring is connected with the lower bolster.

In order to enable the magnetic ring product to form radial multistage magnetism, furthermore, an oriented magnetic block is arranged on the outer side of the cavity in the female die.

In order to reduce the replacement frequency caused by the abrasion of accessories in the continuous production process, reduce the maintenance of a mould and greatly improve the production efficiency by depending on the characteristics of high abrasion resistance and high hardness of materials, an upper mould inner hole core and a lower mould inner hole core are all hard alloy components.

In order to improve the positioning concentricity of the inner hole and the excircle of the product, improve the injection molding quality of the product, reduce the reworking of the product and reduce the quality cost, furthermore, a positioning groove is arranged on the bottom surface of the inner hole core of the upper die. And a positioning lug corresponding to the positioning groove is arranged on the top surface of the lower die inner hole core.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the spring is arranged at the bottom of the lower die inner hole core and plays a role in adjusting the matching of the inner hole parting surfaces, when the upper die inner hole core and the lower die inner hole core are worn, the lower die inner hole core is pushed upwards by the rebound force of the spring to ensure that the inner hole parting surfaces are tightly matched, so that burrs or burrs are prevented from being generated on the inner hole parting surfaces; meanwhile, the parts can be prevented from colliding and breaking when the upper and lower mold cores of the mold are locked under high pressure;

2. according to the utility model, the upper die inner hole core and the lower die inner hole core are both hard alloy components, and the high wear resistance and high hardness properties of the materials are relied on, so that the replacement frequency caused by the wear of accessories in the continuous production process is reduced, the maintenance of the die is reduced, and the production efficiency is greatly improved;

3. according to the utility model, the positioning groove is arranged on the bottom surface of the inner hole core of the upper die, the positioning lug corresponding to the positioning groove is arranged on the top surface of the inner hole core of the lower die, and the positioning groove is matched with the positioning lug, so that the positioning concentricity of the inner hole and the excircle of the product is improved, the injection molding quality of the product is improved, the reworking of the product is reduced, and the quality cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged, fragmentary, schematic view of the connection of the upper die inner bore core and the lower die inner bore core of the present invention;

in the figure: 1. mounting a template; 2. a male die; 3. an inner hole core of the upper die; 31. a positioning groove; 4. an oriented magnetic block; 5. an inner hole parting surface; 6. a cavity; 7. a lower die inner hole core; 71. positioning the bump; 8. a female die; 9. a spring; 10. and a lower template.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Example 1

Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides an improve mould plastics mould of ferrite hole die joint burr, including lower bolster 10, the top of lower bolster 10 is equipped with die 8, the top of die 8 is equipped with terrace die 2, the top of terrace die 2 is equipped with cope match-plate pattern 1, the inside of die 8 is equipped with die

cavity

6, 1 upward be connected with the last mould hole core 3 that the tip is located die cavity 6 of cope match-plate pattern, go up

mould hole core

3 and 1 static assembly of cope match-plate pattern, the inside of die 8 is equipped with and goes up the corresponding lower mould hole core 7 of mould hole core 3, it is hole die joint 5 with the contact surface of lower mould hole core 7 to go up mould hole core 3, the bottom of lower mould hole core 7 is equipped with spring 9, spring 9's lower extreme is connected with lower bolster 10, spring 9's upper end is connected with the bottom of lower mould hole core 7.

By adopting the technical scheme, the spring 9 plays a role in adjusting the matching of the inner hole parting surface 5, when the upper die inner hole type core 3 and the lower die inner hole type core 7 are worn, the rebound acting force of the spring 9 pushes the lower die inner hole type core 7 upwards to ensure that the inner hole parting surface 5 is tightly matched, so that burrs or burrs are prevented from being generated on the inner hole parting surface 5; meanwhile, the parts can be prevented from colliding and breaking when the upper and lower cores of the mold are locked under high pressure.

Specifically, the upper die inner hole core 3 and the lower die inner hole core 7 are both hard alloy components.

By adopting the technical scheme, the replacement frequency caused by the abrasion of accessories in the continuous production process is reduced by depending on the characteristics of high abrasion resistance and high hardness of materials, the maintenance of a die is reduced, and the production efficiency is greatly improved.

Example 2

The present embodiment is different from embodiment 1 in that: specifically, a positioning groove 31 is arranged on the bottom surface of the upper die inner hole core 3. The top surface of the lower die inner hole core 7 is provided with a positioning lug 71 corresponding to the positioning groove 31.

Through adopting above-mentioned technical scheme, through positioning groove 31 and the cooperation of location lug 71, improve product hole and excircle location concentricity, promote the product quality of moulding plastics, reduce the product and rework, reduce the quality cost.

Example 3

The present embodiment is different from embodiment 1 in that: specifically, the oriented magnetic block 4 is arranged on the outer side of the cavity 6 in the female die 8.

By adopting the technical scheme, the oriented magnetic block 4 enables the magnetic ring product to form radial multistage magnetism.

In conclusion, the spring 9 is arranged at the bottom of the lower die inner hole core 7, the spring 9 plays a role in adjusting the matching of the inner hole parting surface 5, when the upper die inner hole core 3 and the lower die inner hole core 7 are worn, the rebound acting force of the spring 9 pushes the lower die inner hole core 7 upwards to ensure that the inner hole parting surface 5 is tightly matched, so that burrs or burrs are prevented from being generated on the inner hole parting surface 5; meanwhile, the parts can be prevented from colliding and breaking when the upper and lower mold cores of the mold are locked under high pressure; according to the utility model, the upper die inner hole core 3 and the lower die inner hole core 7 are both hard alloy components, and the high wear resistance and high hardness properties of the materials are relied on, so that the replacement frequency caused by the wear of accessories in the continuous production process is reduced, the maintenance of a die is reduced, and the production efficiency is greatly improved; according to the utility model, the positioning groove 31 is arranged on the bottom surface of the upper die inner hole core 3, the positioning lug 71 corresponding to the positioning groove 31 is arranged on the top surface of the lower die inner hole core 7, and the positioning groove 31 is matched with the positioning lug 71, so that the positioning concentricity of the inner hole and the excircle of the product is improved, the injection molding quality of the product is improved, the reworking of the product is reduced, and the quality cost is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an improve mould plastics ferrite hole die joint burr, includes the lower bolster, its characterized in that: the top of lower bolster is equipped with the die, and the top of die is equipped with the terrace die, and the top of terrace die is equipped with the cope match-plate pattern, and the inside of die is equipped with the die cavity, is connected with the last mould hole core that the tip is located the die cavity on the cope match-plate pattern, and the inside of die is equipped with and goes up the corresponding lower mould hole core of mould hole core, and the bottom of lower mould hole core is equipped with the spring, and the spring is connected with the lower bolster.

2. The mold for improving burrs of an inner hole parting surface of an injection molding ferrite as claimed in claim 1, wherein: and an oriented magnetic block is arranged on the outer side of the cavity in the female die.

3. The mold for improving burrs of an inner hole parting surface of an injection molding ferrite as claimed in claim 1, wherein: and the upper die inner hole core and the lower die inner hole core are both hard alloy components.

4. The mold for improving burrs of an inner hole parting surface of an injection molding ferrite as claimed in claim 1, wherein: and the upper die inner hole core is statically assembled with the upper die plate.

5. The mold for improving burrs of an inner hole parting surface of an injection molding ferrite as claimed in claim 1, wherein: and a positioning groove is arranged on the bottom surface of the upper die inner hole core.

6. The mold for improving burrs of an inner hole parting surface of an injection molding ferrite as claimed in claim 5, wherein: and a positioning lug corresponding to the positioning groove is arranged on the top surface of the lower die inner hole core.

7. The mold for improving burrs of an inner hole parting surface of an injection molding ferrite as claimed in claim 1, wherein: the contact surface of the upper die inner hole core and the lower die inner hole core is an inner hole parting surface.