CN218700868U - Injection mold for molding product with micropores - Google Patents

Abstract

The utility model relates to the technical field of micropore product injection molds, in particular to an injection mold for molding products with micropores, which solves the problem that the end part can be bent under the influence of gravity because the size of an insert pin is too thin in the existing production, thereby causing poor micropore molding precision; the die comprises a movable die with a movable die core arranged inside and a fixed die with a fixed die core arranged inside, wherein a die cavity for molding is formed by the movable die core and the fixed die core when the movable die core and the fixed die core are closed; the point end of the insert needle with the arc-shaped structure can play a certain guiding role, so that the end part of the insert needle slides into the hole, and the butt joint block with the hole plays a role in protecting the insert needle and also plays a role in supporting the insert needle relative to the sheath, so that the insert needle is kept straight on the transverse direction to avoid bending.

Description

Injection mold for molding product with micropores

Technical Field

The utility model relates to a micropore product injection mold technical field, concretely relates to shaping has injection mold of micropore product.

Background

The existing molding product with micropores generally adopts the method that a needle-shaped insert is poked into a mold cavity, and the micropores are formed at the original position after the insert is drawn out through injection molding around the insert. When the size of the micro-hole is sufficiently small, for example 1mm or less, the diameter of the corresponding insert end does not exceed 1mm. Because the layout of injection molding machine or corresponding equipment is inconvenient to change, therefore this company still adopts the production mode of common mould closing about, and the inlay needle also transversely places, but discovery when production, because the size of inlaying the needle is too thin, can produce slight bending by the influence of gravity at its tip, this precision that has seriously influenced product production, the mould is after the mould is opened the die assembly many times, and the tip of inlaying the needle also easily wears out, and the mould is short-lived. Therefore, an injection mold is designed in the background to change the above problems.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model provides an injection mold of shaping product with micropore to in solving current production, because inlay the needle size and lead to the tip can receive gravity to influence the bending, and then cause the poor problem of micropore shaping precision too thin.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the injection mold of shaping product that has a micropore, including the inside movable mould that is provided with movable mould benevolence and the cover half that is provided with the cover half of cover half benevolence inside, movable mould benevolence and cover half benevolence form when the compound die and are used for fashioned die cavity, be provided with the needle of inlaying that stretches into the die cavity in the movable mould benevolence, inlay on the terminal surface that the cover half benevolence is close to the die cavity and be equipped with the butt joint piece, set up on the terminal surface of butt joint piece and hold the hole that inlays the needle point end, the most advanced formation arc of inlaying the needle.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, a groove is formed in the end face, far away from the die cavity, of the movable die core, a driving cylinder is embedded in the groove, and the insert pin is embedded in the driving cylinder.

Further, the insert pin comprises a base, a main body, a forming end and an extending end, the base is attached to the end face of the ejector sleeve and is flush with the end face of the movable die core, the main body is arranged inside the ejector sleeve, the forming end extends into the die cavity, and the extending end extends into the hole.

Further, the end of the protruding end is hemispherical.

Further, the cover half tip is provided with the runner, the runner passes through the runner and connects in each die cavity, the tip of runner is provided with the subchannel, the subchannel symmetry is provided with two sets ofly, and inserts from the both sides of die cavity.

Furthermore, notches are formed in four side lines of the movable mold and the fixed mold, and a concave block and a convex block which are in butt joint are arranged in each notch.

Furthermore, a water channel is arranged in the fixed die and the fixed die core, penetrates through the top of the fixed die, then bends to enter the fixed die core, extends downwards in the fixed die core, bends to penetrate into the fixed die, and finally penetrates out of the bottom of the fixed die.

Furthermore, the die cavity is provided with four symmetrical groups, the water channels are provided with two symmetrical groups, and the water channels are arranged on the outer sides of the butt-joint blocks.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

the tip of the insert needle with the arc-shaped structure can play a certain guiding role to enable the end part of the insert needle to slide into the hole, and the butt-joint block with the hole plays a role in protecting the insert needle relative to the sheath and also plays a role in supporting the insert needle so as to keep straight in the transverse direction and avoid bending; the holes can prevent the insert pins from being rapidly bent due to repeated die assembly and die opening under the condition that the insert pins are not bound by the pointed ends, so that the frequency of replacing the pins is reduced, the cost is reduced, and the production efficiency is improved; the extension end of the insert pin has a certain length, is durable and wear-resistant under the collision and scraping of repeated die assembly, and can effectively prolong the service life.

Drawings

FIG. 1 is a general schematic view of the external structure of the present mold;

FIG. 2 is a schematic view of a portion of the component structure at the mold cavity;

FIG. 3 is a schematic structural view of FIG. 1 with the movable mold and the fixed mold removed;

FIG. 4 is a schematic view of the core shown in FIG. 2 with the core removed;

FIG. 5 is a cross-sectional view at the mold cavity;

FIG. 6 is an enlarged view of the area A in FIG. 5;

fig. 7 is an exploded view of the insert, the cartridge and the product.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a movable mould core; 2. fixing a mold core; 3. inserting a pin; 31. a base; 32. a main body; 33. a forming end; 34. An extension end; 4. a butt joint block; 5. a ejector sleeve; 6. a gate; 7. a flow channel; 8. dividing the channel; 9. a concave block; 10. A bump; 11. a water channel; 12. and (5) producing the product.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application 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.

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 application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that spatial relationship terms, such as "under" \823030, "" under "\823030" "," under "\8230", "over", and the like, may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "at 8230, below" and "at 8230, below" may include both an upper and a lower orientation. In addition, the device may comprise additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

As shown in fig. 1 to 7, an injection mold for molding a product 12 with micropores includes a movable mold having a movable mold core 1 therein and a fixed mold having a fixed mold core 2 therein, the movable mold core 1 and the fixed mold core 2 form a mold cavity for molding when closing the mold, an insert pin 3 extending into the mold cavity is provided in the movable mold core 1, a butt-joint block 4 is embedded on an end surface of the fixed mold core 2 close to the mold cavity, a hole for accommodating an tip of the insert pin 3 is provided on an end surface of the butt-joint block 4, and the tip of the insert pin 3 forms an arc shape.

The 3 pointed ends of the insert needle of the arc-shaped structure can play a certain guiding role, so that the end part of the insert needle 3 slides into the hole, the butt joint block 4 with the hole plays a role in protecting the insert needle 3 relative to the sheath, the insert needle 3 is prevented from being fast bent due to repeated die assembly and die sinking under the condition of no pointed constraint, the needle changing frequency can be greatly improved, and the production efficiency is improved, so that the cost is reduced. The butt-joint block 4 is embedded on the end face of the fixed die core 2 and can be replaced at any time along with different insert pins 3, and the hole of the butt-joint block 4 is worn and lost along with the production, so that the butt-joint block 4 can be arranged into a rectangular structure, and the square butt-joint block 4 can be rotated by 90 degrees or 180 degrees after being worn and can be used for multiple times.

The end face, away from the die cavity, of the movable die core 1 is provided with a groove, an ejector sleeve 5 is embedded in the groove, and the insert pin 3 is embedded in the ejector sleeve 5. The ejector 5 improves the assembly precision and the wear resistance, and the ejector 5 and the insert pin 3 are more convenient to replace regularly. The insert pin 3 comprises a base 31, a main body 32, a forming end 33 and an extending end 34, wherein the base 31 is attached to the end face of the ejector sleeve 5 and is flush with the end face of the movable die core 1, the main body 32 is arranged inside the ejector sleeve 5, the forming end 33 extends into the die cavity, and the extending end 34 extends into the hole. Base 31 plays the fixed effect of butt, and main part 32 is slightly bigger than the micropore diameter, plays the effect that main part 32 supported, and shaping end 33 requires the design according to the shaping, and the important end 34 that stretches out that lays needle 3 in this scheme, the end 34 that stretches out has certain length, and under the collision scraping of compound die many times, it can receive the wearing and tearing to stretch out end 34 and shorten, and the end 34 that stretches out that has certain length can effectively improve life. The end of the protruding end 34 is preferably hemispherical for easier interfacing with the bore.

Specifically, a sprue 6 is arranged at the end part of the fixed die, the sprue 6 is connected to each die cavity through a runner 7, a branch 8 is arranged at the end part of the runner 7, and the branch 8 is symmetrically provided with two groups and is accessed from two sides of the die cavity. The lane 8 is designed as usual with a cold well and a waste well. Due to the small size of the product 12, the problem of underfilling is likely to occur during injection molding due to liquid tension. The bilaterally symmetrical lane 8 is designed in the scheme, so that the injection molding effect can be improved for the 12 bases 31 of the annular products, the problem of flowability in the structure is solved, and the filling is fuller.

Notches are formed in four side lines of the movable mold and the fixed mold, a concave block 9 and a convex block 10 which are in butt joint are arranged in the notches respectively, the concave block 9 and the convex block 10 can correspond to the movable mold and the fixed mold at will, and the butt joint of an external mold frame is more accurate.

Specifically, water channels 11 are arranged in the fixed die and the fixed die core 2, the water channels 11 penetrate through the top of the fixed die, then are bent to enter the fixed die core 2, extend downwards in the fixed die core 2, are bent to penetrate into the fixed die, and finally penetrate out of the bottom of the fixed die. The water channel 11 can also penetrate through the side part or the bottom part of the fixed die and penetrate out from the opposite side.

In this scheme, preferably, the die cavity is provided with four groups of symmetry, namely bilateral symmetry, longitudinal symmetry, and water course 11 is provided with two groups of bilateral or longitudinal symmetry, and water course 11 locates the outside of butt joint piece 4, the direction of keeping away from the middle part die cavity promptly.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. The injection mold of shaping product with micropore, including the inside movable mould that is provided with movable mould benevolence and the cover half that is provided with the cover half of cover half benevolence inside, movable mould benevolence and cover half benevolence form when the compound die and are used for fashioned die cavity, be provided with the inlay needle that stretches into the die cavity in the movable mould benevolence, its characterized in that, inlay on the terminal surface that the cover half benevolence is close to the die cavity and be equipped with the butt joint piece, set up on the terminal surface of butt joint piece and hold the hole of inlaying the needle point end, the most advanced formation arc of inlaying the needle.

2. The injection mold for molding a product with micropores according to claim 1, wherein a groove is formed on an end surface of the movable mold core away from the mold cavity, a sleeve is embedded in the groove, and the insert pin is embedded in the sleeve.

3. The injection mold for molding the product with the micropores according to claim 2, wherein the insert pin comprises a base, a main body, a molding end and an extending end, the base is attached to the end surface of the ejector sleeve and is flush with the end surface of the movable mold core, the main body is arranged inside the ejector sleeve, the molding end extends into the mold cavity, and the extending end extends into the hole.

4. The injection mold for molding a product having micro-holes as claimed in claim 3, wherein the end of the protruding end is a hemisphere shape.

5. An injection mold for molding a product with micropores according to claim 1, wherein the fixed mold is provided at an end thereof with a gate, the gate is connected to each mold cavity through a runner, and the end of the runner is provided with two sets of runners, and the runners are symmetrically arranged and accessed from two sides of the mold cavity.

6. The injection mold for molding the product with the micropores according to claim 1, wherein notches are formed at four side lines of the movable mold and the fixed mold, and a concave block and a convex block which are butted with each other are respectively arranged in the notches.

7. The injection mold for molding a product having micro-holes as claimed in claim 1, wherein the fixed mold and the fixed mold core are provided with water channels therein, the water channels are penetrated from the top of the fixed mold, then bent into the fixed mold core, extended downward in the fixed mold core, bent into the fixed mold and finally penetrated from the bottom of the fixed mold.

8. The injection mold for molding a product having micro-holes as claimed in claim 7, wherein said mold cavity is provided with four symmetrical groups, said water passages are provided with two symmetrical groups, and said water passages are provided outside said butt blocks.

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