A large-scale die-casting mold ejector plate motion balancing structure
By adding pads and wear-resistant blocks between the ejector plate and the mold frame, the wear problem caused by the unbalanced movement of the ejector plate was solved, thus improving the service life of the mold and the quality of the product.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG HONGTU (NANTONG) MOULD CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-06-19
Smart Images

Figure CN224372776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a die-casting mold, specifically to a motion balance structure for the ejector plate of a large die-casting mold. Background Technology
[0002] In large die-casting molds, there are situations where ejector plates and ejector pins are fitted together in the mold frame. The ejector plate is supported by ejector pins and moves in conjunction with the ejector pins over a long period of time to open and close the mold. Figure 1 This is a structural diagram of the ejector plate and mold frame in a typical mold. However, during production, it was found that the excessive weight of the ejector plate caused it to sag, which, when moving in conjunction with the ejector pins, could damage the ejector pins, leading to wear on the mold core and poor product quality.
[0003] Therefore, in order to ensure the ejector plate moves in a balanced and stable manner, reduce mold damage, and improve mold life and product quality, there is an urgent need to improve the ejector plate to meet production requirements. Utility Model Content
[0004] To address the problems of ejector pin damage and mold core wear, this utility model provides a motion balance structure for the ejector pin plate of a large die-casting mold.
[0005] This utility model provides the following technical solution:
[0006] A motion balancing structure for a large die-casting mold ejector plate includes an ejector plate body and a pad block placed between the ejector plate body and the mold frame below. The ejector plate body includes a first ejector plate and a second ejector plate. The bottom of the ejector plate body is provided with threads. The pad block is provided with screw through holes. The pad block and the ejector plate body are fixed together by threaded connection. The mold frame is provided with threaded holes and grooves. A wear-resistant block is placed in the groove. The pad block is placed on top of the wear-resistant block. The shape and size of the pad block and the wear-resistant block are matched and fit tightly together.
[0007] Furthermore, the wear-resistant block is provided with screw through holes, and the wear-resistant block is placed in the groove and connected and fixed together through threaded holes.
[0008] Furthermore, the pad block drives the ejector plate body to move smoothly on the wear-resistant block.
[0009] Furthermore, the first ejector plate and the second ejector plate are arranged adjacent to each other and are fixedly connected to the pad below.
[0010] Compared with the prior art, the beneficial effects of this utility model are: the ejector plate motion balance structure of this utility model includes an ejector plate, a pad, a wear-resistant block and a mold frame. The pad is added between the ejector plate and the mold frame. The pad can drive the ejector plate body to move smoothly on the wear-resistant block, which effectively solves the problem of ejector plate motion balance in large molds, reduces mold damage, and improves mold life and product quality. Attached Figure Description
[0011] Figure 1 This is a structural diagram of the ejector plate and mold frame of a typical mold;
[0012] Figure 2 This is a schematic diagram of the structure of this utility model;
[0013] Figure 3 This is a utility model Figure 2 Side view.
[0014] Among them: 1. First ejector plate, 2. Second ejector plate, 3. Pad block, 4. Wear-resistant block, 41. Groove, 5. Mold frame. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 2-3 This utility model relates to a motion balance structure for the ejector plate of a large die-casting mold.
[0017] The mold includes an ejector plate body, and a pad 3 is placed between the ejector plate body and the mold frame 5 below. The ejector plate body includes a first ejector plate 1 and a second ejector plate 2. The bottom of the ejector plate body is provided with threads, and the pad 3 is provided with screw through holes. The pad 3 and the ejector plate body are fixed together by threaded connection. The mold frame 5 is provided with threaded holes and grooves 41. Wear-resistant blocks 4 are placed in the grooves 41, and the pad 3 is on top of the wear-resistant blocks 4. The shape and size of the pad 3 and the wear-resistant blocks 4 are matched and fit tightly together.
[0018] The wear-resistant block 4 has a screw through hole, and the wear-resistant block 4 is placed in the groove 41 and connected and fixed together by the threaded hole.
[0019] The pad 3 can drive the ejector plate body to move smoothly on the wear-resistant block 4 without damaging the ejector plate and mold frame 5.
[0020] The first ejector plate 1 and the second ejector plate 2 are arranged adjacent to each other and are fixedly connected to the pad 3 below.
[0021] In order to enable the ejector plate to move in a balanced and stable manner, reduce mold damage, improve mold life and product quality, a pad 3 is placed between the ejector plate and the mold frame. The pad 3 is movable under the ejector plate, and the pad 3 drives the ejector plate body to move smoothly on the wear-resistant block 4.
[0022] This invention employs a shim block between the ejector plate and the mold frame, effectively solving the problem of balanced ejector plate movement in large molds. The specific structure for balancing ejector plate movement is: ejector plate + shim block + wear-resistant block + mold frame. This invention, while solving the problem of ejector plate movement balance in large molds, improves production efficiency and effectively reduces the occurrence of malfunctions.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A large-scale die-casting mold ejector plate movement balancing structure, characterized in that: The device includes an ejector plate body, and a pad (3) is placed between the ejector plate body and the mold frame (5) below. The ejector plate body includes a first ejector plate (1) and a second ejector plate (2). The bottom of the ejector plate body is provided with threads. The pad (3) is provided with screw through holes. The pad (3) and the ejector plate body are fixed together by threaded connection. The mold frame (5) is provided with threaded holes and grooves (41). A wear-resistant block (4) is placed in the groove (41). The pad (3) is above the wear-resistant block (4). The shape and size of the pad (3) and the wear-resistant block (4) are matched and fit tightly together.
2. The motion balance structure of the ejector plate of a large die-casting mold according to claim 1, characterized in that: The wear-resistant block (4) is provided with screw through holes, and the wear-resistant block (4) is placed in the groove (41) and connected and fixed together by threaded holes.
3. The motion balance structure of the ejector plate of a large die-casting mold according to claim 1, characterized in that: The pad (3) drives the ejector plate body to move smoothly on the wear-resistant block (4).
4. The motion balance structure of the ejector plate of a large die-casting mold according to claim 1, characterized in that: The first ejector plate (1) and the second ejector plate (2) are arranged adjacent to each other and are fixedly connected to the pad (3) below.