Mechanical hand assisted ejection structure for long inverted product
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ORTHEY TECH (SHENZHEN) LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-21
AI Technical Summary
In plastic molds, the undercut stroke of long undercut products cannot be effectively ejected, resulting in increased mold thickness, higher processing and production costs, and the aging of the rubber material affecting product performance.
The structure employs a robotic arm to assist in mold removal. By synchronously operating the inclined ejector and ejector plate, combined with the robotic arm components, the ejection stroke of the inclined ejector is reduced, enabling the product to move horizontally and detach from the undercut position.
It effectively reduces the total thickness of the mold, lowers processing and production costs, reduces the residence time of the rubber material, ensures product performance, is suitable for smaller injection molding machines, and improves versatility.
Smart Images

Figure CN224527922U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic mold technology, and in particular to a robotic arm-assisted mold removal structure for long undercut products. Background Technology
[0002] In plastic molds, there are many times when the undercut stroke of the product is very long and cannot be moved out. If a conventional inclined ejector structure is used, the mold thickness will increase, the injection molding machine will be forced to be larger, and the mold processing cost and injection molding production cost will increase. At the same time, during injection, due to the large machine, the plastic material stays for a long time, which leads to plastic aging and affects the performance of the product. Utility Model Content
[0003] The purpose of this invention is to provide a robotic arm-assisted mold removal structure for long undercut products. When the product is ejected, the inclined ejector and the ejector plate move water synchronously until the limiting post of the ejector plate contacts the bottom of the mold blank B plate. The product is then fixed by the injection molding machine robotic arm assembly and moved again in the inclined ejector undercut direction until the undercut is completely disengaged. The robotic arm assembly continues to move and place the product on the worktable to complete the first injection. By adopting a robotic arm-assisted mold removal method, the ejection stroke of the inclined ejector is reduced, thereby effectively reducing the total thickness of the mold and making it highly practical.
[0004] To achieve the above objectives, the following technical solution is adopted:
[0005] A robotic arm-assisted mold removal structure for a long undercut product includes a mounting base plate, a square iron plate arranged on the mounting base plate, a B plate arranged on the square iron plate, and a rear mold core installed in the B plate. It also includes a robotic arm assembly and an ejector pin. An ejector pin base plate is arranged on the mounting base plate, and an ejector pin panel is also installed on the ejector pin base plate. A first fixed seat is installed on the ejector pin panel, and a slanted ejector rod is also installed on the first fixed seat. The upper part of the slanted ejector rod is inclined upwards, and after the upper part of the slanted ejector rod moves through the B plate, it is movably inserted into the rear mold core. The top of the slanted ejector rod is also connected to a slanted ejector top seat. The ejector pin is connected to the ejector pin base plate. The robotic arm assembly is arranged close to the B plate. The robotic arm assembly is used to grip the product and drive the product to move horizontally after it has been ejected a certain distance by the slanted ejector top seat.
[0006] Furthermore, the top of the first fixing base is provided with a first fixing hole that extends to its bottom, and a fixing block is installed on each of the inner walls on both sides of the first fixing hole; the lower part of the inclined push rod passes through the first fixing hole, and a locking block is installed on the lower part of the inclined push rod located in the first fixing hole; a locking hole is provided on each of the opposite sides of the two fixing blocks, and locking pins are provided on both sides of the locking block corresponding to the locking holes; the locking pins are inserted into the locking holes.
[0007] Furthermore, a first limiting hole is provided on the ejector plate, a first limiting groove is provided on the ejector base plate corresponding to the first limiting hole, and a second limiting hole is provided in the first limiting groove; the lower part of the first fixing seat is installed in the first limiting groove, and the upper part of the first fixing seat is arranged in the first limiting hole; a limiting step extends outward from each of the two outer walls of the first fixing seat, and the limiting step is arranged on the ejector base plate.
[0008] Furthermore, a limiting post is also installed on the top of the ejector plate.
[0009] Furthermore, a second fixing seat is installed at the bottom of the B plate, and the upper part of the inclined top rod passes through the second fixing seat.
[0010] Furthermore, one end of the inclined top seat is also connected to an inverted seat.
[0011] By adopting the above solution, the beneficial effects of this utility model are:
[0012] This invention reduces the ejection stroke of the inclined ejector by using a robotic arm to pick up the product, thereby reducing the total thickness of the mold, lowering mold processing costs and injection molding production costs, reducing the residence time of the plastic material, and ensuring the performance of the product. At the same time, a smaller injection molding machine can be selected to meet different usage needs, making it highly versatile. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 for Figure 1 Cross-sectional view;
[0015] Figure 3 This is a schematic diagram of the structure of this utility model omitting the B plate and the rear mold core;
[0016] Figure 4 This is an exploded view of the inclined push rod and the first fixed seat of this utility model;
[0017] Figure 5 This is an exploded view of the mounting base plate, ejector base plate, and ejector panel of this utility model;
[0018] The following are explanations of the labels in the attached diagram:
[0019] 1. Mounting base plate; 2. Square iron; 3. B plate; 4. Rear mold core; 11. Ejector pin base plate; 12. Ejector pin panel; 13. First fixed seat; 14. Angled ejector rod; 15. Angled ejector top seat; 16. Undercut seat; 31. Second fixed seat; 101. First limiting hole; 102. First limiting groove; 103. Second limiting hole; 104. Limiting step; 131. Fixing block; 132. Locking block; 133. Locking post. Detailed Implementation
[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0021] Reference Figures 1 to 5 As shown, this utility model provides a robotic arm-assisted mold removal structure for long undercut products, including a mounting base plate 1, a square iron 2 arranged on the mounting base plate 1, a B plate 3 arranged on the square iron 2, and a rear mold core 4 installed in the B plate 3. In one embodiment, it also includes a robotic arm assembly and an ejector rod. An ejector pin base plate 11 is arranged on the mounting base plate 1, and an ejector pin panel 12 is also installed on the ejector pin base plate 11. A first fixing seat 13 is installed on the ejector pin panel 12, and an inclined ejector rod 14 is also installed on the first fixing seat 13. The upper part of the inclined ejector rod 14 is inclined upward, and after the upper part of the inclined ejector rod 14 moves through the B plate 3, it is movably inserted into the rear mold core 4. An inclined ejector top seat 15 is also connected to the top of the inclined ejector rod 14. The ejector rod is connected to the ejector pin base plate 11. The robotic arm assembly is arranged close to the B plate 3. The robotic arm assembly is used to grip the product and drive the product to move horizontally after the product is pushed out a certain distance by the inclined ejector top seat 15.
[0022] In this embodiment, one end of the inclined top seat 15 is also connected to the undercut seat 16, and the top of the ejector plate 12 is also equipped with a limiting post. The robot arm assembly can use an existing robot arm, and this utility model does not limit it. When the product is ejected, the inclined top seat 15, the ejector plate 12, and the ejector base plate 11 move water synchronously under the action of the ejector roller until the limiting post of the ejector plate 12 contacts the bottom of the mold blank B plate 3. Then, the injection molding machine robot arm assembly fixes the product and moves it again in the inclined top undercut direction until the undercut position is completely disengaged. The robot arm assembly continues to move to place the product on the worktable to complete the first product. By using the robot arm to assist in taking out the mold, the ejection stroke of the inclined top is reduced, thereby effectively reducing the total thickness of the mold and making it highly practical.
[0023] Preferably, to ensure the stability of the inclined push rod 14, the top of the first fixing base 13 is provided with a first fixing hole extending to its bottom, and a fixing block 131 is installed on each of the inner walls on both sides of the first fixing hole; the lower part of the inclined push rod 14 passes through the first fixing hole, and a locking block 132 is installed on the lower part of the inclined push rod 14 located in the first fixing hole; a locking hole is provided on each opposite side of the two fixing blocks 131, and locking pins 133 are provided on both sides of the locking block 132 corresponding to the locking holes; the locking pins 133 are inserted into the locking holes; a first limiting hole 101 is provided on the ejector plate 12, and the ejector base plate... A first limiting groove 102 is provided on the plate 11 corresponding to the first limiting hole 101, and a second limiting hole 103 is provided in the first limiting groove 102 (the lower part of the inclined push rod 14 is arranged through the second limiting hole 103); the lower part of the first fixing seat 13 is installed in the first limiting groove 102, and the upper part of the first fixing seat 13 is arranged in the first limiting hole 101; a limiting step 104 extends outward from each of the two outer walls of the first fixing seat 13, and the limiting step 104 is arranged on the ejector pin base plate 11. At the same time, a second fixing seat 31 is also installed at the bottom of the B plate 3, and the upper part of the inclined push rod 14 is arranged through the second fixing seat 31.
[0024] In summary, this utility model reduces the ejection stroke of the inclined ejector by using a robotic arm to pick up the product, thereby reducing the total thickness of the mold, lowering mold processing costs and injection molding production costs, reducing the residence time of the plastic material, and ensuring the performance of the product. At the same time, a smaller injection molding machine can be selected to meet different usage needs, making it highly versatile.
[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A robotic arm-assisted mold removal structure for a long undercut product, comprising a mounting base plate, a square iron arranged on the mounting base plate, a B plate arranged on the square iron, and a rear mold core installed within the B plate, characterized in that, It also includes a robotic arm assembly and an ejector pin; an ejector base plate is arranged on the mounting base plate, and an ejector plate is also installed on the ejector base plate; a first fixed seat is installed on the ejector plate, and an inclined ejector rod is also installed on the first fixed seat; the upper part of the inclined ejector rod is inclined upward, and after the upper part of the inclined ejector rod moves through the B plate, it moves into the rear mold core; the top of the inclined ejector rod is also connected to an inclined ejector top seat; the ejector pin is connected to the ejector base plate, and the robotic arm assembly is arranged close to the B plate. The robotic arm assembly is used to grip the product and drive the product to move horizontally after the product is pushed out a certain distance by the inclined ejector top seat.
2. The robotic arm-assisted mold removal structure for long undercut products according to claim 1, characterized in that, The first fixing base has a first fixing hole extending to its bottom at the top, and a fixing block is installed on each of the inner walls on both sides of the first fixing hole; the lower part of the inclined push rod passes through the first fixing hole, and a locking block is installed on the lower part of the inclined push rod located in the first fixing hole; a locking hole is opened on each of the opposite sides of the two fixing blocks, and locking pins are provided on both sides of the locking block at the corresponding positions of the locking holes; the locking pins are inserted into the locking holes.
3. The robotic arm-assisted mold removal structure for long undercut products according to claim 2, characterized in that, The ejector pin panel is provided with a first limiting hole, and the ejector pin base plate is provided with a first limiting groove corresponding to the first limiting hole, and a second limiting hole is provided in the first limiting groove; the lower part of the first fixing seat is installed in the first limiting groove, and the upper part of the first fixing seat is arranged in the first limiting hole; the outer walls on both sides of the first fixing seat also extend outward by a limiting step, and the limiting step is arranged on the ejector pin base plate.
4. The robotic arm-assisted mold removal structure for long undercut products according to claim 1, characterized in that, The top of the ejector plate is also equipped with a limiting post.
5. The robotic arm-assisted mold removal structure for long undercut products according to claim 1, characterized in that, A second fixing seat is also installed at the bottom of the B plate, and the upper part of the inclined top rod passes through the second fixing seat.
6. The robotic arm-assisted mold removal structure for long undercut products according to claim 1, characterized in that, One end of the inclined top seat is also connected to an inverted seat.