Die-casting die for hook
By introducing lower position avoidance groove and core pulling design into the die-casting mold, combined with the use of thimble and casting head, the problem of core pulling movement under high pressure is solved, and the dimensional accuracy and quality of the hook product are improved.
Patent Information
- Application Number
- CN202421407285.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-06-19
AI Technical Summary
When forming and hanging hooks in existing die-casting molds, the core pulling is prone to move due to high pressure, resulting in a decrease in product dimensional accuracy and affecting product quality.
A hook die casting mold is designed. By setting the lower avoidance groove and the core pulling core on the lower mold, the lower half of the core pulling core fits with the lower avoidance groove, and an upper avoidance groove is provided on the upper mold. Combined with a thimble and a casting head, the stability of the core pulling core is achieved and high-pressure displacement is avoided. At the same time, the casting head and the first runner are used as separate components for easy replacement and cleaning.
Ensure the stability of the core extraction position, improve product dimensional accuracy, reduce blockage, and improve production efficiency and product quality.
Smart Images
Figure CN223043616U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of mold processing, and particularly relates to a die-casting mold for a hook. Background Art
[0002] A die-casting mold is a tool for casting metal parts, a tool for completing the die-casting process on a dedicated die-casting forging machine. The basic die-casting process is as follows: the molten metal is first cast into the mold cavity at a low speed or a high speed. The mold has a movable cavity surface, which is pressurized and forged during the cooling process of the molten metal, eliminating the shrinkage cavity and porosity defects of the blank, and also making the internal structure of the blank reach the broken grains in the forged state. Therefore, die-casting molds are widely used in manufacturing some parts required in furniture. However, for some hooks composed of an installation part and a hook part, a buckle position is provided on the side of the installation part of the hook. Currently, the general die-casting mold is provided with a movable core-pulling mechanism in the lateral direction to complete the forming and demolding of the buckle position. However, during the die-casting process, when the molten metal rushes in at a high speed, high pressure is easily formed inside the mold, which may cause the core-pulling to move due to the high pressure, reducing the dimensional accuracy of the product and the product quality. Content of the Utility Model
[0003] The purpose of the present application is to provide a die-casting mold for a hook, with a stable core-pulling position to ensure the dimensional accuracy of the product.
[0004] To achieve the above purpose, the technical solution adopted by the present utility model is: a die-casting mold for a hook, including an upper mold and a lower mold. The upper mold is provided with an upper cavity that fits the outer wall of the upper part of the hook, and the lower mold is provided with a lower cavity that fits the outer wall of the lower part of the hook. The upper cavity and the lower cavity cooperate to form the hook. The lower mold is provided with a lower avoidance groove and a core-pulling. The core-pulling is placed in the lower avoidance groove, and the lower avoidance groove fits the lower half of the core-pulling. One end of the core-pulling facing the lower cavity is used to cooperate with the forming of the buckle position of the hook. The upper mold is correspondingly provided with an upper avoidance groove that fits the upper half of the core-pulling. The lower mold is also provided with a casting head and a first runner. One end of the first runner is connected to the casting head, and the other end of the first runner is embedded in the lower avoidance groove and connected to the lower cavity. A thimble for demolding is further provided at the bottom of the lower mold. The thimble is located below the first runner and is used to push up the first runner for demolding.
[0005] By adopting the above technical solution, the molten metal enters from the casting head, passes through the first runner, and enters the lower cavity and the upper cavity, where it cools and forms the hook. During demolding, the upper mold moves upward to separate from the lower mold, and the ejector pin drives the first runner and the casting head to rise. Since the first runner is embedded in the lower avoidance groove, the first runner winds around the bottom of the core-pulling mechanism. When the first runner is lifted, it drives the core-pulling mechanism to move upward, enabling the core-pulling mechanism and the hook to move upward synchronously, thus achieving demolding. Since the lower half of the core-pulling mechanism is placed in the lower avoidance groove, the groove wall of the lower avoidance groove plays a limiting role on the core-pulling mechanism, making the position of the core-pulling mechanism more stable, preventing the core-pulling mechanism from shifting due to high pressure during the molding process, thereby ensuring the dimensional accuracy of the product. At the same time, the casting head and the first runner are separate components, facilitating replacement and cleaning, reducing the blockage of the first runner, and further improving the product quality.
[0006] Preferably, a limiting block is detachably and fixedly arranged on the side surface of the lower mold. The lower avoidance groove penetrates through the side surface of the lower mold, and one end of the core-pulling mechanism away from the lower cavity abuts against the limiting block.
[0007] By adopting the above solution, the setting of the limiting block enables the core-pulling mechanism to abut against the limiting block, making the position of the core-pulling mechanism more stable.
[0008] Preferably, the number of the lower cavities and the upper cavities is specifically four groups, and the four groups of upper cavities and lower cavities are respectively located around the casting head.
[0009] By adopting the above technical solution, the mold can simultaneously form four hooks, improving the production efficiency.
[0010] Preferably, a plurality of connecting nozzles are arranged at the connection between the first runner and the lower cavity or the upper cavity, and the connecting nozzles are flat.
[0011] By adopting the above solution, the flat connecting nozzles are beneficial for the molten metal to quickly fill the lower cavity and the upper cavity, making the product quality better and reducing the generation of bubbles.
[0012] Preferably, an opening is provided at the top of the hook. An insert is fixedly arranged on the upper mold. The insert passes through the upper mold and the lower end of the insert is inserted into the upper cavity. The insert is used to cooperate in forming the opening of the hook.
[0013] Preferably, a protrusion is provided on the hooked portion of the hook, and a groove corresponding to the protrusion of the hook is formed in the upper cavity.
[0014] Preferably, an exhaust channel is further formed in the lower mold. One end of the exhaust channel is communicated with the lower cavity, and the other end of the exhaust channel extends to the side surface of the lower mold.
[0015] By adopting the above scheme, the exhaust channels are arranged such that during molding, when the molten metal fills the lower cavity and the upper cavity, the gas originally in the lower cavity and the upper cavity can be quickly discharged through the exhaust channels, thus facilitating the molding of the product.
[0016] In summary, the beneficial technical effects of this application are as follows:
[0017] 1. The groove walls of the lower relief grooves play a limiting role in the core pulling, making the position of the core pulling more stable, avoiding displacement of the core pulling due to high pressure during the molding process, thus ensuring the dimensional accuracy of the product. At the same time, as a separate component, the first runner is convenient for replacement and cleaning, reducing the blockage of the first runner and further improving the quality of the product.
[0018] 2. The flat-shaped connecting nozzle is conducive to the molten metal quickly filling the lower cavity and the upper cavity, making the quality of the product better and reducing the generation of bubbles. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the upper mold in this embodiment.
[0020] Figure 2 is a schematic structural diagram of the lower mold in this embodiment.
[0021] Figure 3 is a schematic structural diagram of the lower mold with the hook hidden in this embodiment.
[0022] Figure 4 is a schematic structural diagram of the first runner in this embodiment.
[0023] DESCRIPTION OF THE REFERENCE NUMERALS:
[0024] 1. Upper mold; 2. Lower mold; 3. Hook; 4. Upper cavity; 5. Lower cavity; 6. Lower relief groove; 7. Core pulling; 8. Upper relief groove; 9. Casting head; 10. First runner; 11. Ejector pin; 12. Limiting block; 13. Insert; 14. Groove; 15. Connecting nozzle; 16. Exhaust channel; 17. Second runner. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model.
[0026] This application discloses a die-casting mold for a hook, as Figures 1 - 3As shown in the figure, it includes an upper die 1 and a lower die 2. The upper die 1 is provided with an upper cavity 4 that fits the outer wall of the upper part of the hook 3, and the lower die 2 is provided with a lower cavity 5 that fits the outer wall of the lower part of the hook 3. The upper cavity 4 and the lower cavity 5 cooperate to form the hook 3. The lower die 2 is provided with a lower avoidance groove 6 and a core-pulling mechanism 7. The core-pulling mechanism 7 is placed in the lower avoidance groove 6, and the lower avoidance groove 6 fits the lower half of the core-pulling mechanism 7. One end of the core-pulling mechanism 7 facing the lower cavity 5 is used to cooperate in forming the buckle position of the hook 3. The upper die 1 is correspondingly provided with an upper avoidance groove 8 that fits the upper half of the core-pulling mechanism 7. The lower die 2 is also provided with a casting head 9 and a first runner 10. The upper end of the casting head 9 penetrates the upper die 1 and is used for injecting molten metal. One end of the first runner 10 is connected to the casting head 9, and the other end of the first runner 10 is embedded in the lower avoidance groove 6 and connected to the lower cavity 5. The bottom of the lower die 2 is also provided with ejector pins 11 for demolding. The ejector pins 11 are located below the first runner 10. The ejector pins 11 are used to lift the first runner 10 for demolding. Molten metal enters from the casting head 9, passes through the first runner 10, and enters the lower cavity 5 and the upper cavity 4, and cools to form the hook 3. During demolding, the upper die 1 moves upward to separate from the lower die 2, and the ejector pins 11 drive the first runner 10 and the casting head 9 to lift. Since the first runner 10 is embedded in the lower avoidance groove 6, the first runner 10 wraps around the bottom of the core-pulling mechanism 7. When the first runner 10 is lifted, it drives the core-pulling mechanism 7 to move upward, so that the core-pulling mechanism 7 and the hook 3 move upward synchronously, thus realizing demolding. Since the lower half of the core-pulling mechanism 7 is placed in the lower avoidance groove 6, the groove wall of the lower avoidance groove 6 plays a limiting role on the core-pulling mechanism 7, making the position of the core-pulling mechanism 7 more stable, avoiding displacement of the core-pulling mechanism 7 due to high pressure during the forming process, and thus ensuring the dimensional accuracy of the product. At the same time, the casting head 9 and the first runner 10 are separate components and can be detached from the lower die 2, which is convenient for replacement and cleaning, reduces the blockage of the first runner 10, and further improves the quality of the product.
[0027] In this embodiment, as Figure 2 and Figure 3 shown, the number of the lower cavity 5 and the upper cavity 4 is specifically four groups. The four groups of upper cavities 4 and lower cavities 5 are respectively located around the casting head 9, so that the mold can form four hooks 3 at the same time, improving production efficiency. A limiting block 12 is detachably and fixedly arranged on the side of the lower die 2. The limiting block 12 is fixed to the side of the lower die 2 by bolts to make the position of the limiting block 12 stable. The lower avoidance groove 6 penetrates the side of the lower die 2. One end of the core-pulling mechanism 7 far from the lower cavity 5 abuts against the limiting block 12. The setting of the limiting block 12 enables the core-pulling mechanism 7 to abut against the limiting block 12, making the position of the core-pulling mechanism 7 more stable.
[0028] As Figure 1 and Figure 2As shown, an opening is provided at the top of the hook 3. An insert 13 is fixedly arranged on the upper die 1. The insert 13 passes through the upper die 1 and the lower end of the insert 13 is inserted into the upper cavity 4. The insert 13 is used to cooperate in forming the opening of the hook 3. A protrusion is provided on the hooked portion of the hook 3, and a groove 14 corresponding to the protrusion of the hook 3 is provided in the upper cavity 4.
[0029] As Figure 4 shown, a plurality of connecting nozzles 15 are provided at the connection between the first runner 10 and the lower cavity 5 or the upper cavity 4. The connecting nozzles 15 are flat-shaped to increase the connection area between the first runner 10 and the lower cavity 5. The flat-shaped connecting nozzles 15 are beneficial for the molten metal to quickly fill the lower cavity 5 and the upper cavity 4, making the quality of the product better and reducing the generation of bubbles. The lower die 2 is also provided with an exhaust channel 16. One end of the exhaust channel 16 is connected to the lower cavity 5, and the other end of the exhaust channel 16 extends to the side of the lower die 2. The setting of the exhaust channel 16 enables the original gas in the lower cavity 5 and the upper cavity 4 to be quickly discharged through the exhaust channel 16 during the process of the molten metal filling the lower cavity 5 and the upper cavity 4 during molding, which is thus beneficial for the molding of the product. A second runner 17 is also provided on the lower die 2. The second runner 17 is used to connect the exhaust channel 16 with the lower cavity 5, and a flat-shaped connecting nozzle 15 is also provided at the connection between the second runner 17 and the lower cavity 5, and is connected to the lower cavity 5 through the connecting nozzle 15.
[0030] The implementation principle of this embodiment is as follows:
[0031] During molding, the upper die 1 and the lower die 2 are combined. The molten metal enters from the casting head 9 and enters the lower cavity 5 and the upper cavity 4 through the first runner 10. The molten metal quickly fills the upper cavity 4 and the lower cavity 5 under the action of the connecting nozzles 15, and the hook 3 is cooled and formed. During demolding, the upper die 1 moves upward to separate from the lower die 2, and the ejector pin 11 drives the first runner 10 and the casting head 9 to be lifted. Since the first runner 10 is embedded in the lower avoidance groove 6, the first runner 10 winds around the bottom of the core-pulling 7. When the first runner 10 is lifted, it drives the core-pulling 7 to move upward, so that the core-pulling 7 and the hook 3 move upward synchronously, thus realizing demolding.
[0032] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0033] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model; the above is only the preferred implementation mode of the present utility model. It should be noted that due to the limitation of literal expression and objectively existing infinite specific structures, for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements, retouches or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.
Claims
1. A die-casting mold for a hook, characterized in that: The invention comprises an upper mold (1) and a lower mold (2), wherein the upper mold (1) is provided with an upper mold cavity (4) which matches with the outer wall of the upper part of the hook (3), and the lower mold (2) is provided with a lower mold cavity (5) which matches with the outer wall of the lower part of the hook (3), and the upper mold cavity (4) and the lower mold cavity (5) are used to form the hook (3), and the lower mold (2) is provided with a lower avoidance groove (6) and a core pull (7), and the core pull (7) is placed in the lower avoidance groove (6), and the lower avoidance groove (6) matches with the lower half of the core pull (7), and one end of the core pull (7) facing the lower mold cavity (5) is used to cooperate with the forming hook (3). The upper mold (1) is provided with an upper avoidance groove (8) which matches with the upper half of the core puller (7); the lower mold (2) is also provided with a casting head (9) and a first flow channel (10); one end of the first flow channel (10) is connected with the casting head (9); the other end of the first flow channel (10) is embedded in the lower avoidance groove (6) and is connected with the lower cavity (5); the bottom of the lower mold (2) is also provided with an ejector pin (11) for demoulding; the ejector pin (11) is located below the first flow channel (10); the ejector pin (11) is used to lift the first flow channel (10) for demoulding.
2. The die-casting mold for a hook according to claim 1, characterized in that: A limit block (12) is detachably fixedly provided on the side of the lower die (2); the lower avoidance groove (6) passes through the side of the lower die (2); and one end of the core pulling (7) away from the lower cavity (5) abuts against the limit block (12).
3. The die-casting mold for a hook according to claim 2, characterized in that: The number of the lower mold cavities (5) and the upper mold cavities (4) is specifically four groups, and the four groups of the upper mold cavities (4) and the lower mold cavities (5) are respectively located around the casting head (9).
4. The die-casting mold for a hook according to claim 1, characterized in that: A plurality of connecting nozzles (15) are provided at the connection point between the first flow channel (10) and the lower cavity (5) or the upper cavity (4), and the connecting nozzles (15) are flat.
5. The die-casting mold for a hook according to claim 1, characterized in that: An opening is provided at the top of the hook (3); an insert (13) is fixedly provided on the upper mold (1); the insert (13) passes through the upper mold (1) and the lower end of the insert (13) is inserted into the upper cavity (4); the insert (13) is used to cooperate with the opening of the molding hook (3).
6. The die-casting mold for a hook according to claim 1, characterized in that: A protrusion is arranged on the bent hook portion of the hook (3), and a groove (14) corresponding to the protrusion of the hook (3) is opened in the upper cavity (4).
7. The die-casting mold for a hook according to claim 4, characterized in that: The lower mold (2) is also provided with an exhaust passage (16), one end of which is connected to the lower mold cavity (5), and the other end of which extends to the side surface of the lower mold (2).