CN212194066U

CN212194066U - Exhaust structure for injection mold

Info

Publication number: CN212194066U
Application number: CN201922025863.5U
Authority: CN
Inventors: 陈仲华
Original assignee: 陈仲华
Current assignee: Wuhan jufutai Technology Co.,Ltd.
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-12-22
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses an exhaust structure that injection mold used, including outer mould, inner mold, sealed piece, electric telescopic device, the inside center of outer mould is provided with the inner mold, be formed with the chamber of moulding plastics between outer mould inside wall and the inner mold lateral surface, mould plastics the chamber top and be provided with the gas vent, outer mould upper end surface is provided with the spout, the gas vent is linked together with the spout, the inside sliding connection of spout has sealed piece, sealed piece upper end fixed surface is connected with electric telescopic device, electric telescopic device's telescopic link one end fixed connection be in on the inside wall of spout one side. The utility model has the advantages of can effectively exhaust the air fast, and can not block up the injection mold usefulness in exhaust hole, its mainly used discharges the inside air of injection mold.

Description

Exhaust structure for injection mold

Technical Field

The utility model relates to an injection mold technical field, specific exhaust structure that injection mold used that says so.

Background

At present, most of people's lives can not leave plastic products, and the production of current plastic products adopts injection mold to produce mostly, and melting plastics make carrying out injection mold, need the air escape of the intracavity of moulding plastics, and prior art center, the air escape of the intracavity of moulding plastics when moulding plastics, or the discharge in time all makes the condition that appears bubble, incomplete in the product of production easily to influence product quality.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model aims at providing a can effectively exhaust air fast, and can not block up the exhaust structure that injection mold used in exhaust hole.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides an exhaust structure that injection mold used, includes outer mould, inner mould, sealed piece, electric expansion bend, the inside center of outer mould is provided with the inner mould, outer mould inside wall with be formed with the chamber of moulding plastics between the inner mould lateral surface, mould plastics the chamber top and be provided with the gas vent, outer mould upper end surface is provided with the spout, the gas vent on mould plastics the chamber top is linked together with the tank bottom surface of spout, the inside sliding connection of spout has sealed piece, the recess rail has been seted up on the relative both sides side of spout, sealed piece corresponds both sides side sliding connection and is in the recess rail, sealed piece upper end fixed surface is connected with electric expansion bend, electric expansion bend's telescopic link one end fixed connection be in on the inside wall of spout one side.

The bottom of the inner die is fixedly connected with the sealing plate, and the upper end surface of the sealing plate is in abutting connection with the lower end surface of the outer die.

The sealing plate is provided with an injection molding hole, and the injection molding hole is communicated with the injection molding cavity.

The lower end surface of the sealing block is in abutting connection with the bottom surface of the chute bottom.

The lower end surface of the sealing block can be further provided with a vent groove, the interior of the vent groove is of a spherical structure, the shape and the size of a notch of the vent groove are the same as those of an exhaust port on the bottom surface of the sliding groove, and the edge of the notch of the vent groove is overlapped with the edge of an opening of the exhaust port on the bottom surface of the sliding groove.

When the vent groove slides to one side along with the sealing block, one end of the vent groove is communicated with the injection molding cavity, and the other end of the vent groove is communicated with the outside air of the outer mold.

The utility model has the advantages that: the device has simple structure, and the diameter of the through hole of the exhaust port can be determined according to the actual situation, thereby ensuring the effective and rapid air exhaust; after the injection molding is finished, the overflowing molten plastic of the exhaust port is removed through the edge of the side edge of the bottom of the sealing block, so that the exhaust port cannot be blocked when the injection molding machine is used next time.

Drawings

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

fig. 2 is the structure schematic diagram after the optimization of the utility model.

In the figure: the device comprises an outer die 1, an inner die 2, a sealing block 3, an electric expansion piece 4, an injection molding cavity 5, a sliding groove 6, a sealing plate 7, a groove rail 8, an injection molding hole 9 and a vent groove 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, an exhaust structure for an injection mold comprises an outer mold 1, an inner mold 2, a sealing block 3 and an electric expansion piece 4, wherein the inner mold 2 is arranged at the center inside the outer mold 1, an injection molding cavity 5 is formed between the inner side wall of the outer mold 1 and the outer side surface of the inner mold 2 and is used for injection molding of a product, an exhaust port is arranged at the top end of the injection molding cavity 5 and is used for exhausting air inside the injection molding cavity 5 in the injection molding process, a sliding chute 6 is arranged on the upper end surface of the outer mold 1, the exhaust port at the top end of the injection molding cavity 5 is communicated with the bottom surface of the sliding chute 6, the sealing block 3 is connected inside the sliding chute 6 in a sliding manner, when injected molten plastic overflows the exhaust port, the overflowing molten plastic is shoveled by the sealing block 3 and is sealed with the injection molding cavity 5, groove rails 8 are arranged on the two opposite side surfaces of the sliding chute, the surface fixed connection of 3 upper ends of sealed piece has electric telescopic device 4, and electric telescopic device 4's telescopic link one end fixed connection is on the inside wall of 6 one sides of spout for the sealed piece 3 of drive carries out the translation in spout 6 and slides.

In the utility model, the bottom of the inner mold 2 is fixedly connected with a sealing plate 7, the upper end surface of the sealing plate 7 is in contact connection with the lower end surface of the outer mold 1, and the sealing plate is used for preventing molten plastic from extruding into a gap between the sealing plate 7 and the outer mold 1, thereby generating burrs;

the sealing plate 7 is provided with an injection molding hole 9, and the injection molding hole 9 is communicated with the injection molding cavity 5 and used for injecting molten plastic;

the lower end surface of the sealing block 3 is in abutting connection with the bottom surface of the chute 6, and is used for preventing molten plastic from extruding into a gap between the sealing block 3 and the bottom surface of the chute 6, so that burrs are generated.

Referring to fig. 2, the further optimization scheme of the present invention is: the lower extreme surface of sealed piece 3 has been seted up air channel 10, and the inside spherical structure that sets up of air channel 10, the notch shape and the gas vent shape, the size of

air channel

10 and 6 bottom surfaces of spout are the same, and the notch edge of air channel 10 overlaps with the opening edge of the gas vent of 6 bottom surfaces of spout mutually, and when air channel 10 slided to one side along with sealed piece 3, air channel 10 one end was linked together with injection molding cavity 5, and the air channel 10 other end is linked together with the outside air of outer mould 1.

The utility model discloses a theory of operation is: when the injection molding device is used, molten plastic is slowly injected into the injection molding cavity 5 through the injection molding hole 9 until the molten plastic overflows from the exhaust port, when the molten plastic overflows, the molten plastic is stopped being injected into the injection molding hole 9, the electric expansion piece 4 is started to drive the sealing block 3 to slide, so that the overflowing molten plastic is removed, meanwhile, the injection molding cavity 5 is integrally sealed, and after the molten plastic is solidified, the sealing plate 7 and the inner mold 2 are taken out together, so that a product is demolded;

when the exhaust structure of the optimized scheme is used, injected molten plastic enters from one end of the vent groove 10 and overflows from the other end of the vent groove to the injection molding cavity 5, inward injection molding is stopped at the moment, the electric expansion piece 4 is started, the sealing block 3 slides inwards to overlap the edge of the notch of the vent groove 10 and the opening edge of the exhaust port on the bottom surface of the sliding groove 6, the injection molding cavity 5 is sealed integrally, and after the molten plastic is solidified, the sealing plate 7 and the inner mold 2 are taken out together, so that a product is demolded.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an exhaust structure that injection mold used, includes outer mould (1), inner mould (2), sealed piece (3), electronic expansion bend (4), its characterized in that: the inner mold (2) is arranged at the center of the inner part of the outer mold (1), an injection molding cavity (5) is formed between the inner side wall of the outer mold (1) and the outer side surface of the inner mold (2), an exhaust port is arranged at the top end of the injection molding cavity (5), a sliding groove (6) is arranged on the surface of the upper end of the outer mold (1), an exhaust port at the top end of the injection molding cavity (5) is communicated with the bottom surface of the groove bottom of the sliding groove (6), the sealing block (3) is connected in the sliding groove (6) in a sliding way, groove rails (8) are arranged on the two opposite side surfaces of the sliding groove (6), the side surfaces of the two corresponding sides of the sealing block (3) are connected in the groove rail (8) in a sliding way, the surface of the upper end of the sealing block (3) is fixedly connected with the electric expansion piece (4), one end of a telescopic rod of the electric expansion piece (4) is fixedly connected to the inner side wall of one side of the sliding groove (6).

2. The vent structure for an injection mold according to claim 1, wherein: the bottom of the inner die (2) is fixedly connected with a sealing plate (7), and the upper end surface of the sealing plate (7) is in abutting connection with the lower end surface of the outer die (1).

3. An air vent structure for an injection mold according to claim 2, wherein: injection molding holes (9) are formed in the sealing plate (7), and the injection molding holes (9) are communicated with the injection molding cavity (5).

4. The vent structure for an injection mold according to claim 1, wherein: the lower end surface of the sealing block (3) is in abutting connection with the bottom surface of the chute bottom of the chute (6).

5. The vent structure for an injection mold according to claim 1, wherein: the lower end surface of the sealing block (3) can be further provided with a vent groove (10), the interior of the vent groove (10) is arranged to be of a spherical structure, the shape and the size of a notch of the vent groove (10) are the same as those of an air outlet in the bottom surface of the sliding groove (6), and the edge of the notch of the vent groove (10) is overlapped with the edge of an opening of the air outlet in the bottom surface of the sliding groove (6).

6. An air vent structure for an injection mold according to claim 5, wherein: when the vent groove (10) slides to one side along with the sealing block (3), one end of the vent groove (10) is communicated with the injection molding cavity (5), and the other end of the vent groove (10) is communicated with the outside air of the outer mold (1).