CN-224224409-U - Injection mold

CN224224409UCN 224224409 UCN224224409 UCN 224224409UCN-224224409-U

Abstract

The utility model discloses an injection mold. The injection mold comprises a main mold plate, a push plate, a bottom plate, an inclined guide post, a sliding block and a first ejector rod. After the main die plate is opened, the push plate pushes towards the main die plate, so that the sliding block pushes the first ejector rod to push the workpiece to the top end of the first ejector rod, the sliding block slides towards the top end of the inclined guide post to be far away from the first ejector rod, and when the sliding block is separated from the first ejector rod, the first ejector rod stops moving. After the push plate pushes a certain distance, the sliding block can be separated from the first ejector rod, at the moment, the push plate can not drive the first ejector rod to move forward any more after being pushed forward, and the push plate can drive other ejector rods in the injection mold to eject a workpiece to be demolded, so that the workpiece and the first ejector rod can be mutually separated, the problem of difficult demolding of a complex part of the workpiece is solved, and the injection mold is simple in structure and easy to improve on the existing injection mold.

Inventors

TANG ZHONGBAO
QIU JIANFENG
JIANG LI

Assignees

四维尔丸井(广州)汽车零部件有限公司

Dates

Publication Date: 20260512
Application Date: 20250528

Claims (10)

1. Injection mold, its characterized in that includes: a master template having a cavity for molding a workpiece; the pushing plates are distributed with the main template at intervals; The bottom plate is arranged on one side of the push plate, which is away from the main template; The bottom end of the inclined guide post is fixedly arranged on the bottom plate, and the top end of the inclined guide post extends towards the end face of one side of the push plate relative to the bottom plate; the sliding block is sleeved on the inclined guide post and is slidably arranged on one side, facing the bottom plate, of the push plate; The bottom end of the first ejector rod is abutted against the sliding block, the top end of the first ejector rod is used for being abutted against the workpiece, and the inclined guide pillar is far away from the first ejector rod along the horizontal plane from bottom to top; After the main template is opened, the push plate pushes towards the main template, so that the sliding block pushes the first ejector rod, the top end of the first ejector rod pushes the workpiece, the sliding block slides towards the top end of the inclined guide post to be far away from the first ejector rod, and when the sliding block is separated from the first ejector rod, the first ejector rod stops moving.
2. The injection mold of claim 1 further comprising a second ejector pin, one end of the second ejector pin being mounted to the push plate, the other end of the second ejector pin being positioned in the cavity, the push plate being configured to push the second ejector pin into movement to cause the second ejector pin to eject the workpiece against the workpiece.
3. The injection mold of claim 1, wherein the injection mold comprises a positioning column, the positioning column is mounted on the bottom plate, the positioning column can stretch and retract relative to the upper end face of the bottom plate, a positioning hole is formed in one side of the sliding block, facing the bottom plate, and when the first ejector rod abuts against the sliding block, the top end of the positioning column is located in the positioning hole.
4. The injection mold of claim 1, further comprising a mounting portion fixedly mounted to a side surface of the push plate facing the bottom plate, the mounting portion being provided with a chute in a horizontal direction, the slider being slidably disposed in the chute.
5. The injection mold of claim 1, wherein the first ram includes a first abutment surface and the slide includes a second abutment surface, the first abutment surface being located above the second abutment surface, the first abutment surface abutting the second abutment surface when the first ram abuts the slide, the first abutment surface progressively sloping downward from the slide toward the first ram relative to a horizontal plane.
6. The injection mold of claim 1, wherein the first ejector rod comprises a first section and a second section, the first section is detachably connected with the second section, the first section is arranged through the push plate, and the second section is arranged through the main template.
7. The injection mold of claim 1, wherein the oblique guide post is inclined at an angle α,15 ° or less α or less than 25 ° relative to a vertical plane.
8. The injection mold of claim 7, wherein a maximum length of a contact surface of the slider and the first ejector pin in a sliding direction is L, and L is 2 mm≤l≤5 mm.
9. The injection mold of claim 1, further comprising a stopper fixedly mounted to the main mold plate, the stopper abutting the first ejector rod, the stopper being configured to restrict rotation of the first ejector rod about its central axis.
10. The injection mold of claim 1, wherein the injection mold comprises a molding block mounted on the top end of the first ejector rod, and wherein a molding groove is formed in the outer circumferential surface of the molding block along the vertical direction, and the molding groove is used for molding the reinforcing rib of the workpiece.

Description

Injection mold Technical Field The utility model relates to the technical field of injection molding, in particular to an injection mold. Background In the technical field of mold forming, raw materials are required to be injected into a mold, then the mold is maintained and cooled, and then the mold is opened to take out a piece and the finished product is polished to perform detail treatment. In the process of opening the die and taking out the workpiece, a lifting mechanism is often required to be designed in the die to eject the formed workpiece, then the lifting mechanism is retracted again to wait for the next demolding, and the technical problem that the workpiece is difficult to separate and demold from the lifting element due to the fact that the ejection time and the ejection distance of the lifting element are long in the workpiece demolding process aiming at the parts with complex shapes and large contact areas with the lifting element exists in the workpiece demolding process. Disclosure of utility model The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the injection mold which can enable a workpiece to be easily demolded. The injection mold comprises a main template, a push plate, a bottom plate, an inclined guide post, a sliding block and a first ejector rod. The master template has a cavity for shaping a workpiece. The push plate and the main template are distributed at intervals. The bottom plate set up in the push pedal deviates from one side of master template, the bottom fixed mounting of oblique guide pillar in the bottom plate, the top of oblique guide pillar for the bottom plate orientation the terminal surface of push pedal one side stretches out. The sliding block is sleeved on the inclined guide post, the sliding block is slidably mounted on one side, facing the bottom plate, of the push plate, the bottom end of the first ejector rod is abutted to the sliding block, the top end of the first ejector rod is used for being abutted to the workpiece, and the inclined guide post is far away from the first ejector rod along a horizontal plane from bottom to top. After the main template is opened, the push plate pushes towards the main template, so that the sliding block pushes the first ejector rod, the top end of the first ejector rod pushes the workpiece, the sliding block slides towards the top end of the inclined guide post to be far away from the first ejector rod, and when the sliding block is separated from the first ejector rod, the first ejector rod stops moving. According to the injection mold disclosed by the embodiment of the utility model, the first ejector rod is used for ejecting the complex part of a workpiece, the inclined guide columns are arranged on the fixed bottom plate by additionally arranging the structures of the group of sliding blocks and the inclined guide columns at the bottom end of the first ejector rod, the sliding blocks are sleeved on the inclined guide columns and abut against the first ejector rod, after the main mold plate is opened, the push plate is pushed forward, so that the sliding blocks slide relative to the inclined guide columns, the sliding blocks are gradually far away from the first ejector rod from bottom to top, the sliding blocks are gradually far away from the first ejector rod while sliding forward, after the push plate is pushed for a certain distance, the sliding blocks are separated from the first ejector rod, at the moment, the push plate is pushed forward continuously and does not drive the first ejector rod to move forward any more, and the other ejector rods in the injection mold are driven by the push plate to eject the workpiece continuously, so that the workpiece and the first ejector rod are mutually far away from each other, the problem of difficult demolding of the complex part of the workpiece is solved, and the core pulling structure is not required to be additionally arranged, so that the structure is simple and the improvement is easy on the existing injection mold. According to some embodiments of the utility model, the injection mold further comprises a second ejector rod, one end of the second ejector rod is mounted on the pushing plate, the other end of the second ejector rod is located in the cavity, and the pushing plate can push the second ejector rod to move so that the second ejector rod abuts against the workpiece to perform demolding. According to some embodiments of the utility model, the injection mold comprises a positioning column, the positioning column is mounted on the bottom plate, the positioning column can stretch and retract relative to the upper end face of the bottom plate, a positioning hole is formed in one side of the sliding block, which faces the bottom plate, and when the first ejector rod abuts against the sliding block, the top end of the positioning column is located in the positioning hole. A