CN212636408U

CN212636408U - Injection mold for U-shaped piece

Info

Publication number: CN212636408U
Application number: CN201922499825.3U
Authority: CN
Inventors: 敖绪华
Original assignee: Guangdong Aopro Automation Technology Co ltd
Current assignee: Guangdong Aopro Automation Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-03-02
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an injection mold for U-shaped parts, which comprises a bottom mold, a top mold matched with the bottom mold and a mold cavity component for workpiece forming, wherein the mold cavity component comprises an upper mold core arranged on the top mold, a lower mold core arranged below the bottom mold and a side mold core; the top die is provided with an inclined guide post and a lateral positioning block for assisting in moving the side die core, the bottom die is provided with a stroke groove and a positioning groove matched with the lateral positioning block, the side die core is provided with an outer edge matched with the stroke groove and a guide hole corresponding to the inclined guide post, when the bottom die is closed with the top die, the side die core blocks on two sides move to the lower die core, and the bottom end of the lateral positioning is inserted into the positioning groove so as to stabilize a die cavity formed by the upper die core, the lower die core and the side die core. Adopt the utility model discloses, die cavity stable in structure just can alleviate the load of slope guide pillar.

Description

Injection mold for U-shaped piece

Technical Field

The utility model relates to an injection mold technical field especially relates to an injection mold for U-shaped spare.

Background

The existing common injection mold has the limitation of workpiece demolding, and if the workpiece has the requirement of side surface hole opening, additional punching processing is needed, so that the smoothness of the processing surface of the workpiece is influenced. And also increased production process and cost.

If a plurality of mould blocks are adopted for glue injection molding, the inclined guide post is stressed greatly and is easy to deform outwards when the mould is closed, and the stress condition of the inclined guide post is correspondingly influenced due to the fact that the opening and closing times of the mould are frequent, the mould closing force is large and is generally large, and meanwhile, the mould closing speed is high. Therefore, as the number of times of opening and closing the dies increases, gaps are easily generated between the die blocks, and stripe burrs are generated on the final workpiece.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an injection mold for U-shaped spare is provided, die cavity stable in structure, and can alleviate the load of the guide pillar of inclining.

In order to solve the technical problem, the utility model provides an injection mold for a U-shaped piece, which comprises a bottom mold, a top mold matched with the bottom mold and a mold cavity assembly for workpiece forming, wherein the mold cavity assembly comprises an upper mold core arranged on the top mold, a lower mold core arranged below the bottom mold and a side mold core;

the top die is provided with an inclined guide post and a lateral positioning block for assisting in moving the side die core, the bottom die is provided with a stroke groove and a positioning groove matched with the lateral positioning block, the side die core is provided with an outer edge matched with the stroke groove and a guide hole corresponding to the inclined guide post, when the bottom die is closed with the top die, the side die core blocks on two sides move to the lower die core, and the bottom end of the lateral positioning is inserted into the positioning groove so as to stabilize a die cavity formed by the upper die core, the lower die core and the side die core.

As an improvement of the scheme, the injection mold is further provided with an ejection mechanism for ejecting the workpiece, and the ejection mechanism is arranged below the bottom mold.

As an improvement of the above scheme, the ejection mechanism comprises an ejector pin for ejecting the workpiece, a reset column and a mounting plate, the ejector pin and the reset column are mounted on the mounting plate, the reset column is sleeved with a spring, and two ends of the spring are respectively connected with the mounting plate and the bottom die.

As an improvement of the scheme, the bottom die and the lower die core are respectively provided with an ejection hole corresponding to the ejection pin.

As an improvement of the above scheme, the bottom die is further provided with a column hole matched with the reset column, so that the reset column moves along the column hole.

As an improvement of the above scheme, inclined planes corresponding to each other are arranged between the lateral positioning block and the lateral mold core, so that the lateral mold core can be pushed when the lateral positioning block moves downwards.

As a modification of the scheme, the lower mold core is provided with a forming ridge for forming the workpiece, and the ejection hole is formed in the top of the forming ridge.

As an improvement of the above scheme, the upper mold core is provided with a feeding ridge corresponding to the forming ridge, and when the bottom mold and the top mold are closed, the feeding ridge and the forming ridge are clamped between the side mold cores on two sides.

As a modification of the scheme, the feeding ridge and the top die are provided with feeding holes which are communicated with each other.

As an improvement of the scheme, the bottom die is provided with a die closing guide post, and the top die is provided with a die closing guide hole matched with the die closing guide post.

Implement the utility model discloses, following beneficial effect has:

the utility model discloses an injection mold, including the die block, with the die cavity subassembly of the top mould of die block looks adaptation and being used for the work piece shaping, the die cavity subassembly is including locating last mold core on the top mould, locating lower mold core and side form core under the die block, so when top mould and die block are closed, go up the mold cavity that mold core, lower mold core and side mold core are constituteed, when the die sinking, make things convenient for taking out of work piece simultaneously.

The top die is provided with an inclined guide post and a lateral positioning block for assisting in moving the lateral die core, the bottom die is provided with a stroke groove and a positioning groove matched with the lateral positioning block, and the lateral die core is provided with an outer edge matched with the stroke groove and a guide hole corresponding to the inclined guide post.

Therefore, when the bottom die and the top die are closed, the side die cores on two sides can move downwards to the lower die core under the pushing of the side positioning blocks so as to reduce the load of the inclined guide post during die assembly, and meanwhile, the bottom ends of the side positioning blocks are inserted into the positioning grooves so as to prevent the side die cores from loosening, so that a die cavity formed by the upper die core, the lower die core and the side die cores is stabilized.

Drawings

FIG. 1 is a schematic structural view of the injection mold of the present invention;

FIG. 2 is a schematic view of a bottom mold structure of the injection mold of the present invention;

FIG. 3 is a schematic view of a top mold structure of the injection mold of the present invention;

fig. 4 is a schematic structural diagram of the ejection mechanism in an open state;

fig. 5 is a schematic structural view of the lower mold core of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, the utility model provides an injection mold for U-shaped parts, which comprises a bottom mold 1, a top mold 2 matched with the bottom mold 1 and a mold cavity assembly for workpiece forming, wherein the mold cavity assembly comprises an upper mold core 3 arranged on the top mold, a lower mold core 4 arranged below the bottom mold 1 and a side mold core 5;

the top die 2 is provided with an inclined guide post 21 and a lateral positioning block 22 for assisting in moving the side die cores, the bottom die is provided with a stroke groove 11 and a positioning groove 12 matched with the lateral positioning block, the side die cores 5 are provided with outer edges 51 matched with the stroke groove 12 and guide holes 52 corresponding to the inclined guide post, when the bottom die 1 and the top die 2 are closed, the side die cores 5 on two sides move towards the lower die core 4, and the bottom ends of the lateral positioning blocks 22 are inserted into the positioning grooves 12 so as to stabilize a die cavity formed by the upper die core 3, the lower die core 4 and the side die cores 5.

Specifically, the bottom die is provided with a die closing guide column 13, and the top die is provided with a die closing guide hole 23 matched with the die closing guide column. The inclined planes corresponding to each other are arranged between the lateral positioning block 22 and the lateral mold core 5, so that the lateral positioning block can push the lateral mold core 5 when moving to the bottom mold, and the lateral acting force applied to the inclined guide post 21 when closing the mold is reduced.

The injection mold is further provided with an ejection mechanism 6 for ejecting a workpiece, and the ejection mechanism is arranged below the bottom mold 1. The ejection mechanism 6 comprises an ejector pin 61 for ejecting a workpiece, a reset column 62 and a mounting plate 63, the ejector pin 61 and the reset column 62 are mounted on the mounting plate 63, the reset column 62 is sleeved with a spring 64, and two ends of the spring are respectively connected with the mounting plate 63 and the bottom die 1. The bottom die 1 and the lower die core 4 are both provided with ejection holes 41 corresponding to the ejector pins 61, and the bottom die 1 is further provided with column holes matched with the reset columns 62, so that the reset columns 62 can move along the column holes. Because the thimble 61 is generally thin and long, and is easily bent and deformed when it receives a radial acting force, the arrangement of the post hole and the reset post 62 can effectively counteract the radial acting force. It should be noted that the mounting plate 63 is connected to a telescopic device of the injection molding machine, the spring 64 is compressed by the telescopic device to extend the ejector pin 61 to eject the finished workpiece, and the spring 64 is reset to retract the ejector pin 61 to avoid affecting the shape of the injection molded workpiece.

The lower mold core 4 is provided with a forming ridge 42 for forming a workpiece, and the ejection hole 41 is provided at the top of the forming ridge 42. The upper mold core 3 is provided with a feeding ridge 31 corresponding to the forming ridge 42, when the bottom mold 1 and the top mold 2 are closed, the feeding ridge 31 and the forming ridge 42 are clamped between the side mold cores 5, and the feeding ridge 31 and the top mold 2 are provided with feeding holes 32 communicated with each other. Therefore, the forming ridge 42 and the inner side wall of the side mold core 5 can be provided with a required shape, so that after glue enters the mold cavity through the feeding hole, the side surface of the glue injection workpiece can be formed into a hole or other shapes which cannot be normally ejected by the conventional common mold.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. An injection mold for a U-shaped part is characterized by comprising a bottom mold, a top mold matched with the bottom mold and a mold cavity assembly for workpiece molding, wherein the mold cavity assembly comprises an upper mold core arranged on the top mold, a lower mold core arranged below the bottom mold and a side mold core;

2. The injection mold of claim 1, further comprising an ejection mechanism for ejecting the workpiece, wherein the ejection mechanism is disposed below the bottom mold.

3. The injection mold according to claim 2, wherein the ejection mechanism comprises an ejector pin for ejecting the workpiece, a reset column and a mounting plate, the ejector pin and the reset column are mounted on the mounting plate, the reset column is sleeved with a spring, and two ends of the spring are respectively connected with the mounting plate and the bottom mold.

4. The injection mold of claim 3, wherein the bottom mold and the bottom mold core are provided with ejection holes corresponding to the ejection pins.

5. The injection mold of claim 3, wherein the bottom mold further comprises a post hole adapted to the return post such that the return post moves along the post hole.

6. The injection mold of claim 1, wherein the lateral positioning block and the lateral mold core are provided with inclined surfaces corresponding to each other so that the lateral positioning block pushes the lateral mold core when moving downward.

7. An injection mold according to claim 4, wherein the lower mold core is provided with a forming ridge for forming the workpiece, and the ejection hole is provided at a top of the forming ridge.

8. The injection mold of claim 7, wherein the upper mold core is provided with a feeding ridge corresponding to the forming ridge, and the feeding ridge and the forming ridge are sandwiched between the side mold cores on both sides when the bottom mold and the top mold are closed.

9. An injection mold according to claim 8, wherein the feed ridge and the top mold are provided with feed holes communicating with each other.

10. The injection mold of claim 1, wherein the bottom mold is provided with mold clamping guide posts and the top mold is provided with mold clamping guide holes adapted to the mold clamping guide posts.