CN213260715U

CN213260715U - Plastic injection mold

Info

Publication number: CN213260715U
Application number: CN202020995020.8U
Authority: CN
Inventors: 任珂
Original assignee: Dongguan Trk Technology Co ltd
Current assignee: Dongguan Trk Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-05-25
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses a plastic injection mold, which comprises an upper mold, the injection molding device comprises a fixed die and a lower die, wherein the fixed die is arranged at the middle position, the upper die is arranged on the fixed die, the lower die is arranged below the fixed die, the bottom of the upper die is provided with a die bottom plate, the middle position of the upper die is provided with a die cavity, a fixed plate is arranged on the fixed die, a pressing plate is arranged below the fixed plate, the bottom of the lower die is provided with a fixed die plate, symmetrical fixed die columns are arranged on the fixed die plate, a movable die push rod is fixedly arranged on the fixed die column, a movable push plate is arranged on the movable die push rod, a top plate is arranged on the movable die push rod, a heat source pore passage is arranged at the middle position of the top plate, an injection molding heat source pipe is arranged above the heat source pore passage, symmetrical fixed heat source blocks are arranged on two. The utility model relates to a plastics injection mold can realize the one-time molding of plastics product.

Description

Plastic injection mold

Technical Field

The utility model relates to an injection mold field specifically is a plastics injection mold.

Background

The injection molding mold is used for injection molding of plastic parts, and when a hollow convex column needs to be formed on a workpiece to be injection molded, the hollow convex column needs to be formed simultaneously during injection molding. The traditional injection molding method is that a thimble is arranged on an injection mold, a convex part is arranged on the thimble, plastic is coated outside the convex part during injection molding, and a hollow convex column can be formed after demolding. However, when the mold with the structure is demolded, the convex part on the ejector pin is easy to bend or break, the service life of the injection mold is short, secondary propulsion cannot be realized, and the traditional plastic injection mold only adopts pressurization treatment and is low in efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the plastics injection mold who proposes adopts hot pressing mode to process the plastic products, can the secondary propulsion, can realize the one-time shaping of plastic products.

In order to achieve the above object, the utility model provides a following technical scheme: a plastic injection mold comprises an upper mold, a fixed mold and a lower mold, wherein the fixed mold is arranged at the middle position, the upper mold is arranged above the fixed mold, the lower mold is arranged below the fixed mold, a mold bottom plate is arranged at the bottom of the upper mold, a mold cavity is arranged at the middle position of the upper mold, a fixed plate is arranged on the fixed mold, a pressing plate is arranged below the fixed plate, a fixed mold plate is arranged at the bottom of the lower mold, a symmetrical fixed mold column is arranged on the fixed mold plate, a movable mold push rod is fixedly arranged on the fixed mold column, a movable mold push plate is arranged on the movable mold push rod, a top plate is arranged on the movable mold push rod, a heat source pore passage is arranged at the middle position of the top plate, an injection heat source pipe is arranged above the heat source pore passage, symmetrical fixed heat source blocks are arranged at two sides of, a first pressurizing cylinder is movably arranged on the top plate, and a second pressurizing cylinder is arranged on the die bottom plate.

As an optimal technical proposal of the utility model, the movable push template is provided with symmetrical spring parts.

As an optimized technical proposal of the utility model, the upper die, the fixed die and the lower die all adopt hard alloy as main materials.

As an optimal technical scheme, through screw mode fixed connection between movable mould push rod and the activity push template.

As a preferable technical scheme of the utility model, the propulsion height of first pressure cylinder and second pressure cylinder is between 1cm-5 cm.

As an optimized technical proposal, the push rod of the movable mold is in a shape like a Chinese character 'ao'.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a plastics injection mold can carry out the hot-working to plastics raw materials through setting up the heat source pipe of moulding plastics and handle, realizes the secondary through setting up first pressurized cylinder and second pressurized cylinder and impel, carries out extrusion moulding to plastics raw materials fast, goes up the mould and can dismantle at any time, so only need dismantle it after mould cavity and the heat source pipe of moulding plastics of last mould inside damage alright change with it, need not change other parts, can reduce plastics injection mold's cost.

Drawings

FIG. 1 is a schematic view of the internal structure of a plastic injection mold of the present invention;

FIG. 2 is a schematic view of an external structure of a plastic injection mold according to the present invention;

fig. 3 is a schematic view of the upper die structure of the present invention.

In the figure: 1-upper mould; 2-a mould cavity; 3-a mould bottom plate; 4-a first pressurized cylinder; 5-a second pressurizing cylinder; 6-pressing a plate; 7-a top plate; 8-a spring element; 9-fixing the plate; 10-moving the mould push rod; 11-a fixed mould column; 12-fixing a template; 13-injection molding a heat source pipe; 14-fixed heat source block, 15-movable push template, 16-lower die, 17-heat source pore canal, and 18-fixed die.

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.

Example (b):

referring to fig. 1, fig. 2 and fig. 3, the present invention provides a technical solution: a plastic injection mold comprises an upper mold 1, a fixed mold 18 and a lower mold 16, wherein the fixed mold 18 is arranged at a middle position, the upper mold 1 is arranged on the fixed mold 18, the lower mold 16 is arranged below the fixed mold 18, a mold cavity 2 is arranged at the middle position of the upper mold 1, a fixed plate 9 is arranged on the fixed mold 18, a pressing plate 6 is arranged below the fixed plate 9, a fixed mold plate 12 is arranged at the bottom of the lower mold 16, a symmetrical fixed mold column 11 is arranged on the fixed mold plate 12, a movable mold push rod 10 is fixedly arranged on the fixed mold column 11, a movable mold push plate 15 is arranged on the movable mold push rod 10, a top plate 7 is arranged on the movable mold push rod 10, a heat source pore passage 17 is arranged at the middle position of the top plate 7, an injection molding heat source pipe 13 is arranged on the heat source pore 17, symmetrical fixed heat source blocks 14 are arranged, the two sides of the fixed heat source block 14 are both provided with a die bottom plate 3, the top plate 7 is movably provided with a first pressurizing cylinder 4, and the die bottom plate 3 is provided with a second pressurizing cylinder 5.

Further, in this embodiment, the movable stripper plate 15 is provided with symmetrical spring members 8.

Further, in the present embodiment, the upper die 1, the fixed die 18 and the lower die 16 are made of cemented carbide as a main material.

Further, in this embodiment, the movable mold push rod 10 and the movable mold push plate 15 are fixedly connected by screws.

Further, in the present embodiment, the advancing height of the first pressing cylinder 4 and the second pressing cylinder 5 is between 1cm and 5 cm.

Further, in the present embodiment, the movable mold ram 10 is in a concave shape.

The utility model discloses a theory of operation: when the injection molding machine works, the upper die 1 is manually opened, plastic raw materials are directly placed into the injection molding heat source pipe 13, after the plastic raw materials are melted in the injection molding heat source pipe 13, the first pressurizing cylinder 4 on the top plate 7 is pushed to the upper surface to drive the spring part 8 to stretch towards two sides, the movable template pushing plate 15 is pushed to the upper surface, the movable template pushing plate 15 is pushed to a certain distance and then is matched with the pressing plate 6, the die bottom plate 3 is further pushed to move upwards, the heated and melted plastic raw materials in the injection molding heat source pipe 13 are pushed into the die cavity 2, the plastic raw materials are extruded and formed under the action of the pushing force, and after the plastic raw materials are formed, the die bottom plate 3 drives the second pressurizing cylinder 5 to move downwards under the action of gravity, secondary pushing is achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a plastics injection mold, includes mould, fixed mould and lower mould, its characterized in that: the fixed die is arranged at the middle position, the upper die is arranged above the fixed die, the lower die is arranged below the fixed die, a die bottom plate is arranged at the bottom of the upper die, a die cavity is arranged at the middle position of the upper die, a fixed plate is arranged on the fixed die, a pressing plate is arranged below the fixed plate, a fixed die plate is arranged at the bottom of the lower die, a symmetrical fixed die column is arranged on the fixed die plate, a movable die push rod is fixedly arranged on the fixed die column, a movable push plate is arranged on the movable die push rod, a top plate is arranged on the movable die push rod, a heat source pore passage is arranged at the middle position of the top plate, an injection heat source pipe is arranged above the heat source pore passage, symmetrical fixed heat source blocks are arranged at two sides of the injection heat source pipe, the die bottom plates are arranged at two sides of, and a second pressurizing cylinder is arranged on the die bottom plate.

2. A plastic injection mold as defined in claim 1, wherein: symmetrical spring parts are arranged on the movable push template.

3. A plastic injection mold as defined in claim 1, wherein: the upper die, the fixed die and the lower die are all made of hard alloy.

4. A plastic injection mold as defined in claim 1, wherein: the movable mold push rod is fixedly connected with the movable push template in a screw mode.

5. A plastic injection mold as defined in claim 1, wherein: the propulsion height of the first pressurizing cylinder and the second pressurizing cylinder is between 1cm and 5 cm.

6. A plastic injection mold as defined in claim 1, wherein: the movable mold push rod is in a concave shape.