CN202965072U - A plastic injection mold base - Google Patents

Abstract

The utility model belongs to the technical field of molds, in particular to a plastic injection mold blank, which comprises a fixed mold and a movable mold, wherein the lower end of the movable mold is provided with a cavity, and a hot runner is arranged in the movable mold; from top to bottom, the movable mould comprises an upper template, an upper top plate and a concave mould which are fixedly connected; from bottom to top, the fixed die comprises a lower die plate, a lower top plate and a male die which are fixedly connected, a guide pillar penetrates between the male die and the female die, and a guide sleeve is sleeved on the outer wall of the guide pillar positioned in the female die; a small guide post penetrates through the upper die plate, the upper top plate and the female die, a return pin is arranged between the lower top plate and the male die and abuts against the small guide post, and a spring is arranged on the return pin. Compared with the prior art, the utility model discloses simple structure, low in production cost injects the die cavity into through the direct method of moulding plastics with machinery of hot runner with the raw materials, again through the cooling, and the delivery mould just can obtain the plastic part, because the shape and the size of die cavity are unchangeable, consequently can guarantee the quality and the uniformity of the product of production.

Description

A plastic injection mold base

technical field

The utility model belongs to the technical field of moulds, in particular to a plastic injection molding blank. the

Background technique

In the prior art, plastic parts are generally made with simple tools, but the production efficiency of this method is low, and it is difficult to guarantee the quality and consistency of injection molded parts, which cannot meet industrial production. the

In order to meet the needs of industrial production, people have gradually developed some plastic injection molds, but the structure of these molds is too complicated and the production cost is high, which is not conducive to improving the production competitiveness of enterprises. the

In view of this, it is indeed necessary to provide a plastic injection molding blank with simple structure, low production cost and guaranteed product quality and consistency. the

Utility model content

The purpose of the utility model is to provide a plastic injection molding blank with simple structure, low production cost and guaranteed product quality and consistency in view of the deficiencies of the prior art. the

In order to achieve the above object, the utility model adopts the following technical solutions:

A plastic injection molding base, including a fixed mold and a movable mold, the lower end of the movable mold is provided with a cavity, the movable mold is provided with a hot runner, one end of the hot runner communicates with the outside world, and the other end communicates with the The cavity is connected; from top to bottom, the movable mold includes a fixedly connected upper template, an upper top plate and a die; from bottom to top, the fixed mold includes a fixedly connected lower template, a lower top plate and a punch, and the convex mold A guide post is provided between the die and the die, and a guide sleeve is provided on the outer wall of the guide post in the die; a guide sleeve is provided between the upper template, the upper top plate and the die There is a small guide post, a return needle is arranged between the lower top plate and the punch, the return needle withstands the small guide post, and a spring is arranged on the return needle.

As an improvement of the plastic injection molding base of the present invention, a piece of square iron is provided at both ends of the lower formwork, wherein one piece of square iron is fixedly connected with the lower formwork by screws, and the other piece of square iron is passed through Pipe nails are respectively fixedly connected with the punch and the lower template. the

As an improvement of the plastic injection molding base of the present invention, the lower template, the lower top plate and the punch are fixedly connected by screws. the

As an improvement of the plastic injection molding base of the present invention, two lower backing plates are arranged inside the lower top plate, and the two lower backing plates are fixedly connected by screws. the

As an improvement of the plastic injection mold blank of the utility model, a middle support edge is arranged in the lower template, the lower top plate and the punch, and the middle support edge passes through the two bottom backing plates. A part of the outer wall is provided with a center support. the

As an improvement of the plastic injection molding base of the present invention, the upper template and the upper top plate are fixedly connected by screws, and the upper top plate and the concave mold are fixedly connected by screws. the

As an improvement of the plastic injection molding base of the utility model, the outer wall of the part where the small guide post passes through the upper top plate and the concave mold is provided with a guide sleeve. the

Compared with the prior art, the utility model has simple structure and low production cost. The raw materials are directly injected into the mold cavity through the hot runner by mechanical injection molding, and then cooled, and the mold is taken to obtain plastic parts. Due to the shape of the mold cavity And the size is constant, so the quality and consistency of the products produced can be guaranteed. Moreover, in order to meet the needs of different plastic parts, it can also be realized by simply replacing the cavities with different shapes and sizes, which has strong applicability. the

Description of drawings

Fig. 1 is a sectional view of the utility model. the

Detailed ways

As shown in Figure 1, a plastic injection molding blank provided by the utility model includes a fixed mold 1 and a movable mold 2, the lower end of the movable mold 2 is provided with a cavity 3, and a hot runner is arranged in the movable mold 2, and the hot runner One end communicates with the outside world, and the other end communicates with the cavity 3; from top to bottom, the movable mold 2 includes a fixedly connected upper template 21, an upper top plate 22, and a concave mold 23; from bottom to top, the fixed mold 1 includes a fixedly connected lower template 11. The lower top plate 12 and the punch 13, the guide post 4 runs through the punch 13 and the die 23, and the outer wall of the guide post 4 in the die 23 is covered with a guide sleeve 5; the upper template 21, the upper A small guide post 6 is provided through between the top plate 22 and the die 23 , and a return needle 7 is arranged between the lower top plate 12 and the punch 13 , the return needle 7 withstands the small guide post 6 , and the return needle 7 is provided with a spring. Wherein, the guide sleeve 5 has the function of positioning and guiding when the mold is opened. the

Wherein, two ends of the lower template 11 are respectively provided with a piece of square iron 8, wherein one piece of square iron 8 is fixedly connected with the lower template 11 by screws 9, and the other piece of square iron 8 is respectively fixed with the punch 13 and the lower template 11 through pipe nails 10. connect. the

The lower template 11, the lower top plate 12 and the punch 13 are fixedly connected by screws 9. the

Two lower backing plates 14 are arranged in the lower top plate 12 , and the two lower backing plates 14 are fixedly connected by screws 9 . the

The lower formwork 11 , the lower top plate 12 and the punch 13 are provided with a middle supporting edge 30 , and the outer wall of the part where the middle supporting edge 30 passes through the two lower backing plates 14 is provided with a middle supporting edge 31 . the

The upper template 21 and the upper top plate 22 are fixedly connected by screws 9 , and the upper top plate 22 and the die 23 are fixedly connected by screws 9 . the

The outer wall of the part where the small guide post 6 passes through the upper top plate 22 and the die 23 is provided with a guide sleeve 5 . the

When in use, first close the fixed mold 1 and the movable mold 2, inject glue from the hot runner into the cavity 3, keep the pressure and cool for a certain period of time, and then use the return needle 7 to lift and fix the small guide post fixed in the movable mold 2 , so that the fixed mold 1 and the movable mold 2 are opened, and the plastic parts can be taken out, and the operation is very simple. the

In a word, the utility model has simple structure and low production cost. The raw materials are directly injected into the cavity 3 through the hot runner by mechanical injection molding, and then cooled, and the mold is taken to obtain the plastic parts. Due to the shape and size of the cavity 3 It is constant, so it can guarantee the quality and consistency of the products produced. Moreover, in order to meet the requirements of different plastic parts, it can also be realized by simply replacing the cavity 3 with different shapes and sizes, which has strong applicability. the

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also make appropriate changes and modifications to the above embodiment. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model. the

Claims (7)

1. plastic-injection mold base, it is characterized in that: comprise fixed half and moving half, the lower end of described dynamic model is provided with die cavity, is provided with hot flow path in described dynamic model, and an end of described hot flow path communicates with the external world, and the other end is communicated with described die cavity; From top to bottom, described dynamic model comprises cope match-plate pattern, upper plate and the die that is fixedly connected with; From bottom to up, described cover half comprises lower bolster, lower roof plate and the punch that is fixedly connected with, and has provided guide pillar between described punch and described die, and the outer wall that is positioned at the guide pillar of described die is arranged with guide pin bushing; Provided little guide pillar between described cope match-plate pattern, described upper plate and described die, be provided with back stitching between described lower roof plate and described punch, described back stitching is withstood described little guide pillar, and is provided with spring on described back stitching.

2. plastic-injection mold base according to claim 1, it is characterized in that: the two ends of described lower bolster respectively are provided with a square iron, wherein a described square iron is screwed with described lower bolster and is connected, and the described square iron of another piece is followed closely respectively by pipe and is fixedly connected with described lower bolster with described punch.

3. plastic-injection mold base according to claim 1, it is characterized in that: described lower bolster, described lower roof plate and the punch of being connected are screwed connection.

4. plastic-injection mold base according to claim 1, it is characterized in that: be provided with two lower bolsters in described lower roof plate, two described lower bolsters are screwed connection.

5. plastic-injection mold base according to claim 4 is characterized in that: be provided with middle holder limit in described lower bolster, described lower roof plate and described punch, and the described middle holder limit outer wall that passes the part of two described lower bolsters is provided with middle holder department.

6. plastic-injection mold base according to claim 1 is characterized in that: described cope match-plate pattern be connected upper plate and be screwed connection, described upper plate be connected die and be screwed connection.

7. plastic-injection mold base according to claim 1, it is characterized in that: the outer wall that described little guide pillar passes the part of described upper plate and described die is arranged with guide pin bushing.

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