CN210026104U - One-to-four structure of injection mold for plastic part with inverted buckles at two ends - Google Patents

Abstract

The utility model aims at providing a two-end back-off plastic part injection mold one-to-four structure, the injection molding cavities of four molded plastic part products are arranged in a regular four-side rhombus, the center of the rhombus is a single-nozzle hot runner main glue inlet, the length of a pouring gate from the main glue inlet to the four injection molding cavities keeps an equal distance, a main slide is respectively arranged at the rhombus corner position, and the mold opening and the return of two adjacent small slides are controlled; when the mold is opened, under the action of the inclined guide post, the four main slide positions are simultaneously pulled open, and the two adjacent small slide positions are driven to move, so that the two ends of the plastic part are reversely buckled and demolded; when the die is closed, under the action of the inclined guide post, the four main slide positions return simultaneously, and two adjacent small slide positions are driven to return; the structure is compact and reasonable, the processing is convenient and easy, the slide movement is stable and reliable, the use of a hot nozzle is reduced on the premise of meeting the requirement that the die is one to four, the size of the die is controlled, and the cost of the die is greatly reduced.

Description

One-to-four structure of injection mold for plastic part with inverted buckles at two ends

Technical Field

The utility model relates to an injection mold field especially relates to a piece injection mold goes out four structures are moulded to both ends back-off.

Background

In an automobile plastic part product, a small structural part with a section similar to a channel steel shape is provided, and barbs are designed at two ends as buckles; because the injection mold is a small-structure component, one mold with multiple cavities, submerged glue and a hot runner are often required for the injection mold in order to be suitable for automatic injection molding production, improve injection molding efficiency and stabilize injection molding quality. The traditional solution is that the barb is provided with a slide mold stripping, a single-nozzle hot runner is used for one mold and two cavities, which does not meet the customer requirements of one mold and multiple cavities, and the injection molding efficiency is difficult to improve; if the mould is changed into four cavities, the mould is restricted by the slide structure, and only the double-nozzle hot runner can be used, so that the size of the mould is increased, the using number of the hot runners is increased, and the economy of the mould is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a four-end structure of a two-end back-off plastic injection mold, wherein injection molding cavities of four molded plastic products are arranged in a regular quadrilateral rhombus, the center of the rhombus is a single-nozzle hot runner main glue inlet, the length of a pouring gate from the main glue inlet to the four injection molding cavities keeps equal distance, a main slide is respectively arranged at the rhombus four-diamond-corner position, and the mold opening and the return of two adjacent small slides are controlled; when the mold is opened, under the action of the inclined guide post, the four main slide positions are simultaneously pulled open, and the two adjacent small slide positions are driven to move, so that the two ends of the plastic part are reversely buckled and demolded; when the die is closed, under the action of the inclined guide post, the four main slide positions return simultaneously, and two adjacent small slide positions are driven to return; the structure is compact and reasonable, the processing is convenient and easy, the slide movement is stable and reliable, the use of a hot nozzle is reduced on the premise of meeting the requirement that the die is one to four, the size of the die is controlled, the cost of the die is greatly reduced, and the problems in the background art are solved.

The utility model aims at providing a two-end back-off plastic part injection mold with a four-outlet structure, which comprises a square back mold, wherein four injection molding cavities are arranged on the inner side of the back mold, the four injection molding cavities are arranged in a regular four-side rhombus, the rhombus center formed by the four injection molding cavities is a main glue inlet of a single-nozzle hot runner, a pouring gate is arranged at the main glue inlet in the direction of the four injection molding cavities, and the pouring gate is inserted into the corresponding injection molding cavity; the rear mould is provided with four main row positions which are positioned on four rhombus water caltrops formed by four injection molding cavities; eight small row bits are arranged in the rear die, and two sides of each main row bit are provided with small row bits adjacent to the main row bit; each main row bit is connected with two small row bits adjacent to the main row bit into a whole.

The further improvement lies in that: the main line position drives two adjacent small line positions to open and return; and the small slide realizes the molding and demolding of the reverse buckles at the two ends of the plastic part.

The further improvement lies in that: the main slide is connected with the rear die through a slide seat.

The further improvement lies in that: the main line position and the small line position are both provided with line position pressing plates; the line pressing plates on the main line and the small line are respectively fastened to the line seat or the rear die through screws, and the positions and the movement of the main line and the small line are controlled.

The further improvement lies in that: the length of a pouring channel from the main glue inlet to the four injection molding cavities is kept equidistant.

The utility model has the advantages that: the utility model arranges the injection molding cavities of four molded plastic products in a regular quadrilateral rhombus, the center of the rhombus is a single-nozzle hot runner main glue inlet, the length of a pouring gate from the main glue inlet to the four injection molding cavities keeps an equal distance, and a main slide is respectively arranged at the rhombus corner position to control the die sinking and returning of two adjacent small slides; when the mold is opened, under the action of the inclined guide post, the four main slide positions are simultaneously pulled open, and the two adjacent small slide positions are driven to move, so that the two ends of the plastic part are reversely buckled and demolded; when the die is closed, under the action of the inclined guide post, the four main slide positions return simultaneously, and two adjacent small slide positions are driven to return; the structure is compact and reasonable, the processing is convenient and easy, the line movement is stable and reliable, and on the premise of meeting the requirement of one die to four, the use of one hot nozzle is reduced, the size of the die is controlled, and the cost of the die is greatly reduced; the regular four sides of the plastic product are arranged in a diamond shape and the runners are arranged at equal intervals, so that the improvement of injection molding process parameters is facilitated, the stability of injection molding quality is improved, and the mold meets the requirements of customers.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Wherein: 1-rear mould, 2-injection mould cavity, 3-main glue inlet, 4-pouring channel, 5-main slide, 6-small slide and 7-slide pressing plate.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be described in detail with reference to the following embodiments, which are only used for explaining the present invention and do not limit the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a two-end-reverse-buckling injection mold with a four-part structure, which includes a square rear mold 1, four injection cavities 2 are arranged inside the rear mold 1, the four injection cavities 2 are arranged in a regular quadrilateral rhombus, a rhombus center formed by the four injection cavities 2 is a main glue inlet 3 of a single-nozzle hot runner, a pouring gate 4 is arranged on the main glue inlet 3 in a direction from the four injection cavities 2, and the pouring gate 4 is inserted into the corresponding injection cavity 2; the rear mould 1 is provided with four main rows 5, and the four main rows 5 are positioned on four rhombus corners formed by the four injection molding cavities 2; eight small row bits 6 are arranged in the rear die 1, and two sides of each main row bit 5 are provided with the small row bits 6 adjacent to the main row bit; each main row bit 5 is connected with two small row bits 6 adjacent to the main row bit. The main row position 5 drives two adjacent small row positions 6 to open and return; and the small slide 6 realizes the molding and demolding of the reverse buckles at the two ends of the plastic part. The main slide 5 is connected with the rear mould 1 through a slide seat. The main slide 5 and the small slide 6 are both provided with slide pressing plates 7; the row pressing plates 7 on the main row 5 and the small row 6 are respectively fastened to the row seat or the rear die 1 through screws, and the positions and the movement of the main row 5 and the small row 6 are controlled. The length of the pouring channel 4 between the main glue inlet 3 and the four injection molding cavities 2 is kept equal.

Arranging injection molding cavities of four molded plastic part products in a regular quadrilateral rhombus, wherein the center of the rhombus is a single-nozzle hot runner main glue inlet 3, the lengths of pouring channels 4 from the main glue inlet 3 to the four injection molding cavities 2 are kept at equal intervals, a main slide 5 is respectively arranged at the rhombus position, and the mould opening and the return of two adjacent small slides 6 are controlled; when the mold is opened, under the action of the inclined guide post, the four main slide positions 5 are simultaneously pulled open, and the two adjacent small slide positions 6 are driven to move, so that the two ends of the plastic part are reversely buckled and demolded; when the die is closed, under the action of the inclined guide post, the four main slide positions 5 return simultaneously, and the two adjacent small slide positions 6 are driven to return; the structure is compact and reasonable, the processing is convenient and easy, the line movement is stable and reliable, and on the premise of meeting the requirement of one die to four, the use of one hot nozzle is reduced, the size of the die is controlled, and the cost of the die is greatly reduced; the regular four sides of the plastic product are arranged in a diamond shape and the runners are arranged at equal intervals, so that the improvement of injection molding process parameters is facilitated, the stability of injection molding quality is improved, and the mold meets the requirements of customers.

Claims (5)

1. The utility model provides a two ends back-off moulds a piece injection mold and goes out four structures, including back mould (1) of square, its characterized in that: four injection molding cavities (2) are arranged on the inner side of the rear mold (1), the four injection molding cavities (2) are arranged in a regular quadrilateral rhombus, the centers of rhombuses formed by the four injection molding cavities (2) are main glue inlets (3) of a single-nozzle hot runner, pouring channels (4) are arranged in the directions of the main glue inlets (3) towards the four injection molding cavities (2), and the pouring channels (4) are inserted into the corresponding injection molding cavities (2); the rear mould (1) is provided with four main rows (5), and the four main rows (5) are positioned on four rhombus water chestnuts formed by the four injection molding cavities (2); eight small row positions (6) are arranged in the rear die (1), and two sides of each main row position (5) are provided with the small row positions (6) adjacent to the main row position; each main row bit (5) is connected with two small row bits (6) adjacent to the main row bit into a whole.

2. The injection mold for plastic parts with two inverted ends as claimed in claim 1 has four structures, wherein: the main row position (5) drives two adjacent small row positions (6) to open and return; and the small slide (6) realizes the molding and demolding of the reverse buckles at the two ends of the plastic part.

3. The injection mold for plastic parts with two inverted ends as claimed in claim 1 has four structures, wherein: the main slide (5) is connected with the rear die (1) through a slide seat.

4. The injection mold for plastic parts with two inverted ends as claimed in claim 3 has four structures, wherein: the main slide (5) and the small slide (6) are both provided with slide pressing plates (7); the line pressing plates (7) on the main line (5) and the small line (6) are respectively fastened to the line seat or the rear die (1) through screws, and the positions and the movement of the main line (5) and the small line (6) are controlled.

5. The injection mold for plastic parts with two inverted ends as claimed in claim 1 has four structures, wherein: the lengths of pouring channels (4) between the main glue inlet (3) and the four injection molding cavities (2) are kept equidistant.