A composite undercut secondary slider oblique core-pulling structure that can be used in products
By using a composite undercut secondary slider oblique core-pulling structure, the demolding problem of traditional molds in complex undercut structures is solved, realizing a simple and effective demolding process and avoiding damage to parts.
Patent Information
- Application Number
- CN202521612826.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
- Estimated Expiration
- 2035-07-30
AI Technical Summary
When dealing with complex undercut structures, traditional molds cannot meet the demolding requirements with a single core-pulling action, which can easily lead to demolding failure or damage to parts. Multi-directional core-pulling structures cannot accommodate core-pulling drive devices on the mold, resulting in limited stroke or structural interference.
The product adopts a composite inverted secondary slider oblique core-pulling structure. The slider assembly, consisting of a main slider, a slide block, a mounting base, and a drive cylinder, combined with an oblique guide rod and a dovetail structure, achieves sliding engagement of the secondary slider, enabling single-stage core pulling to disengage from the inverted structure.
The mold has a simple structure. It uses the opening power to release the inverted structure, and then uses a single-stage inclined core-pulling cylinder to release the core, ensuring that the product can be successfully demolded.
Smart Images
Figure CN224508421U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of die casting molds, specifically to a composite undercut secondary slider oblique core pulling structure that can be used for products. Background Technology
[0002] In die-casting mold design, undercut structures are a common but challenging feature. They typically refer to geometric shapes that interfere with the mold opening direction and cannot be directly demolded using conventional ejection or parting actions. Traditional molds often employ angled ejector mechanisms, slider core-pulling mechanisms, or hydraulic core-pulling to achieve one-time demolding when handling undercuts. However, for some complex, space-constrained, or multi-undercut workpieces (such as automotive parts, electronic housings, and complex connectors), a single core-pulling action often fails to meet demolding requirements, leading to the following problems: the undercut structure, core-pulling structure, and mold opening structure all have different directions. Therefore, traditional single core-pulling structures cannot achieve first removing the undercut before pulling the core; multi-directional core-pulling cannot accommodate a core-pulling drive device on the mold; and traditional core-pulling mechanisms, due to limited stroke or structural interference, cannot completely detach from the undercut surface, resulting in demolding failure or part damage. Summary of the Invention
[0003] To address the shortcomings of the existing technology, this utility model provides a composite undercut secondary slider oblique core-pulling structure that can be used for product composite undercut secondary slider oblique core-pulling. Its structure is simple and can achieve separation from the horizontal undercut structure and oblique core-pulling by single-stage core pulling.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A composite undercut secondary slider oblique core-pulling structure for products is characterized by comprising a core, a main slider, a slide block, and a mounting base. The core is disposed at the front end of the main slider, the main slider is slidably disposed on the slide block, and the mounting base is disposed at the rear end of the slide block. A drive cylinder is disposed on the mounting base, and the front end of the piston rod of the drive cylinder is connected to the main slider via a connecting block. A secondary slider assembly extending into the cavity of the core is disposed on the main slider. The secondary slider assembly comprises a triangular slider and an undercut slider. The triangular slider is slidably disposed within the main slider. There are two undercut sliders, symmetrically disposed on the two sides of the triangular slider. The undercut sliders and the triangular sliders are slidably connected by a dovetail structure. The front part of the undercut slider has an undercut structure that protrudes laterally from the cavity surface of the core. The rear end of the undercut slider has a limiting structure that limits its position to the front end face of the main slider. An obliquely arranged guide rod is disposed above the main slider, and the triangular slider has a guide hole that cooperates with the guide rod.
[0006] Furthermore, the slide block is provided with multiple sliding pads supporting the bottom surface of the main slider, the slide block is provided with a guide strip, the bottom of the main slider has a guide groove that slides with the guide strip, and the slide block is provided with limiting blocks that limit the top surfaces of both ends of the main slider.
[0007] Furthermore, the sliding pad is arranged at an angle with the front lower than the back.
[0008] Furthermore, the main slider is provided with a sliding groove, and the main slider is slidably fitted in the sliding groove, with limit plates provided at both ends of the sliding groove.
[0009] Furthermore, the guide rod is disposed on the moving mold side, and the top of the main slider has a clearance groove corresponding to the guide rod.
[0010] The beneficial effects of this utility model include: the mold structure is simple, the undercut structure is detached by the mold opening power, and the core is pulled out in two stages by the single-stage inclined core-pulling cylinder, thereby realizing the core detachment from the product and the product can be demolded smoothly. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model;
[0012] Figure 2 This is an exploded structural diagram of the present invention;
[0013] Figure 3 This is a longitudinal sectional view of the present invention. Detailed Implementation
[0014] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0015] One such Figure 1-3 The illustrated composite undercut secondary slider oblique core-pulling structure includes a core 1, a main slider 2, a slide block 3, and a mounting base 4 arranged sequentially from front to back. The core 1 is located at the front end of the main slider 2, which is slidably mounted on the slide block 3. The slide block 3 has multiple sliding pads 13 supporting the bottom surface of the main slider 2, arranged obliquely with the front lower than the rear. The slide block 3 has guide strips 14, and the bottom of the main slider 2 has guide grooves that slide in cooperation with the guide strips 14. The slide block 3 also has limiting blocks 15 that limit the top surfaces of both ends of the main slider 2.
[0016] Mounting base 4 is located at the rear end of slide block 3. Mounting base 4 is equipped with drive cylinder 5. The front end of piston rod of drive cylinder 5 is connected to main slide block 2 through connecting block 6. Main slide block 2 is equipped with secondary slide block assembly that extends into the cavity of core 1. Secondary slide block assembly includes triangular slide block 7 and inverted slide block 8. Triangular slide block 7 is slidably disposed in main slide block 2. Main slide block 2 is provided with sliding groove. Main slide block 2 is slidably disposed in sliding groove. Limiting plates 16 are provided at both ends of sliding groove.
[0017] Two undercut sliders 8 are symmetrically positioned on the two sides of the triangular slider 7, and are slidably connected to the triangular slider 7 via a dovetail structure. The front of the undercut slider 8 has an undercut structure 9 that protrudes laterally from the cavity surface of the core 1. The rear end of the undercut slider 8 has a limiting structure 10 that is positioned at the front end face of the main slider 2. A guide rod 11 is obliquely arranged above the main slider 2, and the triangular slider 7 has a guide hole 12 that mates with the guide rod 11. The guide rod 11 is located on the moving mold side, and the top of the main slider 2 has a clearance groove corresponding to the guide rod 11.
[0018] The working principle of this utility model is that when the mold is opened, the guide rod 11 moves upward, thereby driving the triangular slider 7 to retract backward. The two undercut sliders 8 retract inward relative to each other, thereby causing the undercut structure 9 to detach from the product. Then, the drive cylinder 5 drives the main slider 2 to move backward along the guide rail, and the main slider 2 drives the core 1 to detach from the product.
[0019] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A composite undercut secondary slider oblique core-pulling structure that can be used in products, characterized in that: The assembly includes a core (1), a main slider (2), a slide block (3), and a mounting base (4). The core (1) is located at the front end of the main slider (2), and the main slider (2) is slidably mounted on the slide block (3). The mounting base (4) is located at the rear end of the slide block (3). A drive cylinder (5) is mounted on the mounting base (4), and the front end of the piston rod of the drive cylinder (5) is connected to the main slider (2) via a connecting block (6). A secondary slider assembly extending into the cavity of the core (1) is mounted on the main slider (2). The secondary slider assembly includes a triangular slider (7) and an undercut slider (8). The triangular slider (7) slides... The main slider (2) is dynamically installed inside it. There are two inverted sliders (8), which are symmetrically arranged on the two sides of the triangular slider (7). The inverted sliders (8) and the triangular slider (7) are slidably connected by a dovetail structure. The front part of the inverted slider (8) has an inverted structure (9) that protrudes laterally from the cavity surface of the core (1). The rear end of the inverted slider (8) has a limiting structure (10) that is limited to the front end face of the main slider (2). A guide rod (11) is arranged obliquely above the main slider (2). The triangular slider (7) has a guide hole (12) that cooperates with the guide rod (11).
2. The product composite undercut secondary slider angle core structure of claim 1, wherein: The slide block (3) is provided with a plurality of sliding pads (13) supporting the bottom surface of the main slider (2). The slide block (3) is provided with a guide strip (14). The bottom of the main slider (2) has a guide groove that slides with the guide strip (14). The slide block (3) is provided with limiting blocks (15) that limit the top surfaces of both ends of the main slider (2).
3. The product composite undercut secondary slider angle core structure of claim 2, wherein: The sliding pad (13) is arranged at an angle with the front lower than the back.
4. The product composite undercut secondary slider angle core structure of claim 1, wherein: The main slider (2) is provided with a sliding groove, and the main slider (2) is slidably fitted in the sliding groove. Limiting plates (16) are provided at both ends of the sliding groove.
5. The product composite undercut secondary slider angle core structure of claim 1, wherein: The guide rod (11) is disposed on the moving mold side, and the top of the main slider (2) has a clearance groove corresponding to the guide rod (11).