Front-mounted split type core structure
By adopting a front-mounted split core structure, the core body and the core head are detachable structures, which solves the complex problems of easy breakage and replacement of traditional cores, and realizes rapid replacement and installation and disassembly of the core head, improving the flexibility and versatility of the core.
Patent Information
- Application Number
- CN202421220317.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The front-end molding part of the traditional magnesium alloy die-casting mold is prone to breakage, and replacing the mold core is complicated, which consumes a lot of manpower and material resources.
The front-mounted split core structure is adopted, and the core body and the core head are detachable structures. The core head is screwed to the core body and is equipped with a spring to prevent loosening, which is convenient for installation, disassembly and replacement.
It realizes rapid replacement, installation and disassembly of the core head, improves the flexibility and versatility of the core, and reduces manpower and material consumption during the replacement process.
Smart Images
Figure CN222552095U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of mold casting equipment, and more specifically to a front-mounted split core structure. Background technology:
[0002] The metal core is a core made of metal material in the casting process. During casting, its end is inserted into the mold and removed in time after the metal solidifies. At this time, the corresponding part of the casting will form the required cavity.
[0003] The cores of some traditional magnesium alloy die-casting molds are generally in the shape of long rods, with their ends extending into the mold to form a cavity for the casting during casting. However, when in use, the forming part at the front end is prone to breakage, and it is more complicated to replace it after it breaks. The magnesium alloy die-casting mold needs to be removed from the die-casting machine, and then the core of the mold needs to be removed before the core can be replaced, which consumes a lot of manpower and material resources. Utility model content:
[0004] The purpose of the utility model is to provide a front-mounted split core structure to address the deficiencies of the prior art. The front core head and the core body that extend into the mold to form the casting cavity are made into a detachable structure, so that when the front core head breaks, it only needs to be removed from the core body and replaced with a new front core head, and it is easy to install and disassemble.
[0005] The technical solutions of the utility model are as follows:
[0006] A front-mounted split core structure includes a core body, a screw hole is formed in the middle of the front end of the core body, a rear end screw portion of a front core head is screwed in the screw hole, and a core forming portion extending forward is formed in the middle of the front end of the front core head. With this structure, when the front core head is damaged or a front core head with a different core forming portion is needed, it is only necessary to rotate the front core head, remove it from the core body, and replace the corresponding front core head, which is convenient for installation and disassembly.
[0007] Furthermore, the front core head includes a rear threaded portion, a middle column portion and a front core molding portion, the front end of the rear threaded portion is molded in the middle of the rear end face of the middle column portion, the rear end face of the core molding portion is molded in the middle of the front end face of the middle column portion, and the outer diameter of the middle column portion is larger than the outer diameters of the rear threaded portion and the core molding portion.
[0008] The rear end surface of the middle column portion is pressed against the front end surface of the core body.
[0009] A spring is inserted into the screw hole, the front end of the spring is pressed against the rear end of the screw hole, and the front end of the spring is pressed against the rear end of the rear screw part. The spring has an anti-loosening effect to prevent the connection between the front core head and the core body from loosening.
[0010] The beneficial effects of the utility model are:
[0011] The front core head and the core body that extend into the mold to form the casting cavity are made into a detachable structure, so that when the front core head is broken, it only needs to be removed from the core body and replaced with a new front core head, and it is easy to install and disassemble.
[0012] Secondly, the front core head and the core body of this structure are detachable structures, so that the front core head of different shapes can be replaced without changing the core body. Similarly, the core body of different lengths or outer diameters can be changed without changing the structure of the front core head, which greatly improves the versatility and flexible use of the two. Description of the drawings:
[0013] Figure 1 It is a partial structural schematic diagram of the utility model in an exploded state;
[0014] Figure 2 It is a partial structural schematic diagram of the core body of the utility model;
[0015] Figure 3 It is a schematic diagram of the local structure of the core body of the utility model. Specific implementation method:
[0016] For example, see Figures 1 to 3 As shown, a front-mounted split core structure includes a core body 10, which is a cylindrical body with a circular cross section, and a radially extending positioning edge 19 is formed on the outer side wall of the rear end thereof. A screw hole 11 is formed in the middle of the front end of the core body 10, and a front core head 20 is located in front of the core body 10. The front core head 20 includes a rear screw connection part 21, a middle column part 23 and a front core molding part 22. The front end of the rear screw connection part 21 is formed in the middle of the rear end face of the middle column part 23, and the rear end face of the core molding part 22 is formed in the middle of the front end face of the middle column part 23. The outer diameter of the middle column part 23 is larger than the outer diameters of the rear screw connection part 21 and the core molding part 22. A chamfer is formed at the outer side wall of the rear end of the middle column part 23.
[0017] The rear end screw connection portion 21 of the front core head 20 is screwed into the screw connection hole 11 , and the rear end surface of the middle column portion 23 is pressed against the front end surface of the core body 10 .
[0018] The spring 1 is inserted into the screw hole 11 , and the front end surface of the spring 1 is pressed against the rear end surface of the screw hole 11 , and the front end of the spring 1 is pressed against the rear end surface of the rear screw portion 21 .
[0019] The spring 1 is pressed against the rear threaded portion 21 of the front core head 20 so that it is not easy to loosen when it is threaded into the threaded hole 11, including the rear end face of the middle column part 23 is closely against the front end face of the core body 10, thereby ensuring the product quality during the molding process.
[0020] When the present embodiment is in use, since the front core head 20 is screwed into the screw hole 11 by the rear end screw connection portion 21, there is no need to remove the core body 22 when installing and disassembling it. The front core head 20 only needs to be rotated to be removed from the screw hole 11 and replaced with a new one, which makes installation and disassembly convenient.
[0021] The front end of the core forming part 22 is formed with an extension rod 24, and the front end of the extension rod 24 is formed with a rotation block 25. The rotation block 25 is a rectangular block. When installing the front core head 20, the rotation block 25 can be clamped with a wrench to rotate, so that the front core head 20 can be rotated for installation;
[0022] The extension rod 24 is a rod body with an outer diameter of 1mm to 3mm and a circular cross-section, that is, the extension rod 24 is thin in diameter, so that after the front core head 20 is tightened, the rotating block 25 is rotated with force to twist the extension rod 24 until it breaks, so that the extension rod 24 and the rotating block 25 can be unscrewed from the core molding part 22 (when it cannot be unscrewed, it can be cut off with a handheld cutting machine, and then polished with a polishing machine or other components to remove the uncut part, so that the end face is flat and meets the needs of subsequent molding), so that it does not affect the subsequent extension of the core molding part 22 into the mold for casting molding (after the extension rod 24 and the core molding part 22 are broken, there may be burrs or smaller partial extension sections, which basically do not affect the subsequent molding, and when the extension section is relatively long, the end face of the core molding part 22 can be polished and polished by a grinder or a polishing machine to remove the protruding partial extension section or burrs to ensure subsequent normal molding use);
[0023] When the front core head 20 is damaged and needs to be disassembled, the middle column part 23 or the core forming part 22 can only be clamped with a wrench to rotate and disassemble it. At this time, the disassembled front core head 20 cannot be used again and can be directly replaced.
[0024] When the front core head 20 is not damaged but needs to be replaced, it is necessary to use a wrench to clamp the outer wall of the middle column part 23 and rotate it. It is necessary to clamp the anti-slip sheet between the clamping part of the wrench and the outer wall of the middle column part 23 and rotate it to reduce the wear on the outer wall of the middle column part 23. A rotating block can also be spot-welded on the outer wall of the middle column part 23. By clamping the rotating block, the middle column part 23 is rotated to loosen it. At the later stage, it is only necessary to break off the rotating block with force and polish and correct the spot welding to meet the subsequent installation needs.
[0025] In this embodiment, since the core body 10 and the front core head 20 are detachable structures, the front core head 20 with core molding parts 22 of different specifications can be installed on the same core body 10 as needed, so that the front core head 20 can be changed without changing the core body 10 to meet the molding needs of holes in castings of different molds. Similarly, the front core head 20 of the same specification can be installed in core bodies 10 of different lengths and outer diameters to meet processing needs. It has good versatility and is easy to use. The flexibility of use is greatly improved, and management is also convenient. The through holes for installing the core body 10 in the mold molding equipment can be set to through holes of uniform specifications, so that the core bodies 10 of the same specifications can be installed. It only needs the front core head 20 at the front end to be installed with the matching core molding part 22 according to the specifications of the holes of the casting to be manufactured. This design makes it possible to install all the core bodies 10 on the same mold without distinguishing them, which greatly improves the installation efficiency and facilitates the management of the core body 10.
[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A front-mounted split core structure, comprising a core body (10), characterized in that: A screw hole (11) is formed in the middle of the front end of the core body (10), a rear end screw portion (21) of the front core head (20) is screwed in the screw hole (11), and a core molding portion (22) extending forward is formed in the middle of the front end of the front core head (20); The front core head (20) comprises a rear screw-connecting portion (21), a middle column portion (23) and a front core molding portion (22); the front end of the rear screw-connecting portion (21) is molded in the middle of the rear end surface of the middle column portion (23); the rear end surface of the core molding portion (22) is molded in the middle of the front end surface of the middle column portion (23); and the outer diameter of the middle column portion (23) is greater than the outer diameters of the rear screw-connecting portion (21) and the core molding portion (22); A spring (1) is inserted into the screw hole (11), the front end surface of the spring (1) is pressed against the rear end surface of the screw hole (11), and the front end of the spring (1) is pressed against the rear end surface of the rear screw part (21).
2. The front-loading split core structure according to claim 1, characterized in that: The rear end surface of the middle column portion (23) is pressed against the front end surface of the core body (10).
3. The front-loading split core structure according to claim 1, characterized in that: An extension rod portion (24) is formed in the middle of the front end surface of the core molding portion (22), and a rotating block (25) is formed at the front end of the extension rod portion (24).
4. The front-loading split core structure according to claim 3, characterized in that: The rotating block (25) is a rectangular block.
5. The front-loading split core structure according to claim 4, characterized in that: The extension rod portion (24) is a rod body with an outer diameter of 1 mm to 3 mm and a circular cross-section.
6. The front-loading split core structure according to claim 1, characterized in that: The core body (10) is a column with a circular cross section, and a radially extending positioning edge (19) is formed on the outer side wall of the rear end thereof.