CN218489009U

CN218489009U - Injection mold positioning mechanism

Info

Publication number: CN218489009U
Application number: CN202222876996.5U
Authority: CN
Inventors: 许龙云
Original assignee: Huangyu Precision Technology Suzhou Co ltd
Current assignee: Huangyu Precision Technology Suzhou Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-02-17
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses an injection mold positioning mechanism, which is arranged in an injection mold; the positioning mechanism comprises a positioning pin and a telescopic column for positioning the nut; the positioning pin is arranged on the upper die; the telescopic column is arranged in the sliding block in a sliding mode along the vertical direction; a thimble used for pushing the telescopic column to slide is arranged in the lower die; when the die is closed, the axes of the telescopic column and the positioning pin are overlapped, the wave ball screw is abutted in the first limiting groove, and the nut is sleeved on the positioning pin; after the mould is opened, the sliding block moves to a second station, the axes of the ejector pin and the telescopic column are overlapped, the driving mechanism pushes the telescopic column to move upwards through the ejector pin, the telescopic column extends out of the sliding block and is used for sleeving a next nut, and the wave ball screw is abutted to the second limiting groove; avoid the slider to influence the injection moulding product drawing of patterns, improve injection moulding product's production efficiency.

Description

Injection mold positioning mechanism

Technical Field

The utility model belongs to the technical field of injection mold, a injection mold positioning mechanism is related to particularly.

Background

An injection mold generally comprises an upper mold and a lower mold, the upper mold is mounted on a movable mold plate of the injection molding machine, the lower mold is mounted on a fixed mold plate of the injection molding machine, the upper mold and the lower mold are closed to form a pouring system and a cavity during injection molding, and the upper mold and the lower mold are separated during mold opening so as to take out a plastic product.

For the injection molding product shown in fig. 1, the nut 3 needs to be embedded in the mounting hole 41 of the injection molding product 4 during the injection molding process; as shown in fig. 2, an existing injection mold includes an upper mold, a lower mold and a slider; the upper die, the lower die and the sliding block form a cavity in the die assembly process; the pre-embedded nut is arranged on the sliding block; the upper die is provided with a positioning pin for positioning a nut; the existing injection mold can only be applied to horizontal machine table forming, so that an injection product is not convenient to demold, and the production efficiency of the injection product is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold positioning mechanism can avoid the slider to influence the injection moulding product drawing of patterns, has further improved injection moulding product's production efficiency.

In order to solve the problem, the utility model adopts the following technical scheme: the positioning mechanism of the injection mold is arranged in the injection mold; the injection mold comprises an upper mold, a lower mold and a sliding block; a first station and a second station of the sliding block are arranged on the lower die; when the sliding block is positioned at a first station, the nut is sleeved on the sliding block; when the upper die, the lower die and the sliding block are assembled to form a cavity, the sliding block is positioned at a second station; the positioning mechanism comprises a positioning pin and a telescopic column for positioning the nut; the positioning pin is arranged on the upper die;

the telescopic column is arranged in the sliding block in a sliding mode along the vertical direction; a wave ball screw for limiting the telescopic column is arranged in the sliding block; a first limiting groove and a second limiting groove are formed in the side wall of the telescopic column from top to bottom; a thimble used for pushing the telescopic column to slide is arranged in the lower die;

when the die is closed, the axes of the telescopic column and the positioning pin are overlapped, the wave ball screw is abutted in the first limiting groove, and the nut is sleeved on the positioning pin;

after the die is opened, the sliding block moves to a second station, the ejector pins coincide with the axes of the telescopic columns, the peripheral driving mechanism pushes the telescopic columns to move upwards through the ejector pins, the telescopic columns stretch out of the sliding block and are used for sleeving a next nut, and the wave ball screws are abutted to the second limiting grooves.

Preferably, the sliding block is arranged in a Z shape; the motion direction of the sliding block is perpendicular to that of the upper die, so that the sliding block and the upper die are prevented from moving to interfere, and the sliding block and the upper die can move synchronously.

Preferably, the lower part of the sliding block is a stepped surface, and the stepped surface of the sliding block is attached to the side part of the lower die during die assembly, so that the sliding block is positioned.

Preferably, the slide block is internally provided with an installation block; a stepped hole is formed in the mounting block along the vertical direction; the telescopic column is arranged in the stepped hole, and the stepped hole comprises a first section of stepped hole and a second section of stepped hole; the telescopic column comprises a first shaft section and a second shaft section; the second shaft section is arranged in the second section stepped hole, and the shaft diameter of the second shaft section is larger than the hole diameter of the first section stepped hole; the sliding range of the telescopic column is limited through the stepped hole, and the first shaft section extends out of the mounting block through the first section of the stepped hole.

Preferably, the first limiting groove and the second limiting groove are arranged in an annular shape, a plurality of wave bead screws are arranged in the sliding block, and the wave bead screws are symmetrically distributed on two sides of the telescopic column.

Preferably, the distance between the first limiting groove and the second limiting groove is set to be 5mm.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

when the utility model is used for assembling the die, the axes of the telescopic column and the locating pin are superposed, the wave ball screw is propped in the first limiting groove, and the nut is sleeved on the locating pin; after the die is opened, the sliding block moves to a second station, the axes of the ejector pin and the telescopic column are overlapped, the telescopic column extends out of the sliding block and is used for sleeving a next nut, and the wave ball screw is abutted in the second limiting groove; avoid the slider to influence the injection moulding product drawing of patterns, improve injection moulding product's production efficiency.

Drawings

FIG. 1 is a schematic diagram of an injection molded product according to an embodiment of the present invention;

FIG. 2 is a block diagram of a prior art injection mold;

FIG. 3 is a structural view of the injection mold before injection molding according to the present embodiment;

FIG. 4 is a structural diagram of the injection mold after injection molding provided in the present embodiment;

FIG. 5 isbase:Sub>A sectional view taken along the line A-A in FIG. 3 according to the present embodiment;

fig. 6 is a structural view of the telescopic column provided in the present embodiment;

in the figure: 1-lower mould; 11-a thimble; 2-positioning pins; 3-a nut; 4-injection molding of the product; 41-mounting holes; 5-a slide block; 51-a mounting block; 511-a stepped hole; 5111-first section stepped bore; 5112-second section of stepped hole; 52-telescopic column; 521-a first limiting groove; 522-a second restraint slot; 523 a first shaft segment; 524 a second shaft section; 6-ball screw; and 7, forming an upper die.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, and the following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 3 to 6, an embodiment of the present invention provides a positioning mechanism for an injection mold, where the positioning mechanism is disposed in the injection mold; the injection mold comprises an upper mold, a lower mold 1 and a slide block 5; a first station and a second station of a sliding block 5 are arranged on the lower die 1; when the sliding block 5 is positioned at the first station, the nut 3 is sleeved on the sliding block 5; and when the upper die 7, the lower die 1 and the slide block 5 are assembled to form a cavity, the slide block 5 is positioned at a second station.

The sliding block 5 is Z-shaped; the moving direction of the sliding block 5 is vertical to that of the upper die 7, so that the sliding block 5 and the upper die 7 are prevented from moving to generate interference, and the sliding block and the upper die can move synchronously; the lower part of the sliding block 5 is provided with a step surface, and the step surface of the sliding block 5 is attached to the side part of the lower die 1 during die assembly, so that the sliding block is positioned.

The positioning mechanism comprises a positioning pin 2 for positioning the nut 3 and a telescopic column 52; the positioning pin 2 is arranged on the upper die;

the slide block 5 is internally provided with a mounting block 51; a stepped hole 511 is formed in the mounting block 51 along the vertical direction; the telescopic post 52 is disposed in the stepped hole 511. The stepped hole 511 comprises a first section of stepped hole 5111 and a second section of stepped hole 5112; the telescoping column 52 includes a first shaft segment 523 and a second shaft segment 524; the second shaft section 524 is disposed in the second section stepped hole 5112, and the shaft diameter of the second shaft section 524 is greater than the diameter of the first section stepped hole 5111; the sliding range of the telescopic column 52 is limited by the stepped hole 511, and the first shaft segment 523 can extend out of the mounting block 51 from the first-segment stepped hole 5112.

The telescopic column 52 is slidable in the vertical direction; a plurality of wave ball screws 6 for limiting the telescopic column 52 are arranged in the sliding block 5; a first limiting groove 521 and a second limiting groove 522 are formed in the side wall of the telescopic column 52 from top to bottom; the first limiting groove 521 and the second limiting groove 522 are annular, and the wave ball screws 6 are symmetrically distributed on two sides of the telescopic column 52; the distance between the first and

second limit grooves

521 and 522 is set to 5mm.

When the die is closed, the axes of the telescopic column 52 and the positioning pin 2 are overlapped, the wave ball screw 6 is abutted in the first limiting groove 521, and the nut 3 is sleeved on the positioning pin 2; a thimble 11 for pushing the telescopic column to slide is arranged in the lower die 1; after the die is opened, the sliding block moves to a second station, the axes of the ejector pin 11 and the telescopic column 52 are overlapped, the peripheral driving mechanism pushes the telescopic column 52 to move upwards through the ejector pin 11, the telescopic column 52 extends out of the sliding block 5 to be sleeved with a next nut 3, and the wave ball screw 6 is abutted to the second limiting groove 522.

The working principle is as follows: converting the initial state of the injection mold into a mold opening state; the sliding block 5 moves to a first station, and the wave ball screw 6 is abutted in the second limit groove 522; the top of the telescopic column 52 extends out of the sliding block 5, and the nut 3 is sleeved on the top of the telescopic column 52;

the slide block 5 moves to a second station, the upper die 7, the lower die 1 and the slide block 5 are assembled to form a cavity, the positioning pin 3 pushes the telescopic column 52 into the slide block 5, the wave ball screw 6 is abutted to the first limiting groove 521, and the nut is accurately positioned through the positioning pin 3; performing injection molding on the injection mold to form an injection molding product, and embedding the nut 3 in the mounting hole 41 of the injection molding product 4;

moving an upper die of the injection mold upwards, moving the slide block 5 back to the first station, pushing the telescopic column 52 to move upwards by the external driving mechanism through the ejector pin 11, extending the telescopic column 52 out of the slide block 5 for sleeving the next nut 3, and abutting the wave ball screw 6 in the second limiting groove 522; the above-described actions are repeated to produce the next injection-molded product 4.

Compared with the prior art, the nut is sleeved on the boss of the sliding block in the prior art, and when the mold is opened, the nut and the injection product are formed into a whole by injection molding and cannot directly slide out of a cavity of the injection product; in this application 3 promotion flexible post 52 to slider 5 of locating pin, 6 supports to locate of ripples pearl screw in the first spacing groove 521, slider 5 can be by direct roll-off in injection moulding product's the cavity during die sinking, and first station is returned in the motion of slider 5, and peripheral hardware actuating mechanism promotes flexible post 52 upward movement through thimble 11, makes flexible post 52 auto-eject slider 5, has improved injection moulding product's production efficiency.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The positioning mechanism of the injection mold is characterized in that the positioning mechanism is arranged in the injection mold; the injection mold comprises an upper mold (7), a lower mold (1) and a sliding block (5); a first station and a second station of the sliding block (5) are arranged on the lower die (1); when the sliding block (5) is positioned at a first station, the nut (3) is sleeved on the sliding block (5); when the upper die (7), the lower die (1) and the sliding block (5) are assembled to form a cavity, the sliding block (5) is positioned at a second station; the positioning mechanism comprises a positioning pin (2) for positioning the nut (3) and a telescopic column (52); the positioning pin (2) is arranged on the upper die (7);

the telescopic column (52) is arranged in the sliding block (5) in a sliding manner along the vertical direction; a wave bead screw (6) used for limiting the telescopic column (52) is arranged in the sliding block (5); a first limiting groove (521) and a second limiting groove (522) are formed in the side wall of the telescopic column (52) from top to bottom; a thimble (11) for pushing the telescopic column (52) to slide is arranged in the lower die (1);

when the die is closed, the axes of the telescopic column (52) and the locating pin (2) are overlapped, the wave bead screw (6) is abutted in the first limiting groove (521), and the nut (3) is sleeved on the locating pin (2);

after the mould is opened, slider (5) move to the second station, the axis coincidence of thimble (11) and flexible post (52), actuating mechanism promote flexible post (52) upward movement through thimble (11), flexible post (52) stretch out slider (5) and are used for the cover to establish next nut (3), ripples pearl screw (6) are supported and are located in second spacing groove (522).

2. An injection mould positioning mechanism according to claim 1, wherein the slide (5) is arranged in a zigzag pattern; the moving direction of the sliding block (5) is vertical to the moving direction of the upper die (7).

3. An injection mold positioning mechanism as claimed in claim 1, wherein the lower part of the slider (5) is provided with a stepped surface, and the stepped surface of the slider (5) is attached to the side of the lower mold (1) during mold closing.

4. An injection mould positioning mechanism as claimed in claim 1, wherein a mounting block (51) is provided within the slide (5); a stepped hole (511) is formed in the mounting block (51) along the vertical direction; the telescopic column (52) is arranged in the stepped hole (511), and the stepped hole (511) comprises a first section of stepped hole (5111) and a second section of stepped hole (5112); the telescopic column (52) comprises a first shaft section (523) and a second shaft section (524); the second shaft section (524) is arranged in the second section stepped hole (5112), and the shaft diameter of the second shaft section (524) is larger than that of the first section stepped hole (5111); the sliding range of the telescopic column (52) is limited by the stepped hole (511), and the first shaft section (523) extends out of the mounting block (51) from the first section stepped hole (5111).

5. The injection mold positioning mechanism according to claim 1, wherein the first limiting groove (521) and the second limiting groove (522) are annular, a plurality of wave bead screws (6) are disposed in the slider (5), and the wave bead screws (6) are symmetrically distributed on two sides of the telescopic column (52).

6. An injection mold positioning mechanism as claimed in claim 1, wherein the distance between the first and second retaining grooves (521, 522) is set to 5mm.