CN223043616U

CN223043616U - A die-casting mold for a hook

Info

Publication number: CN223043616U
Application number: CN202421407285.6U
Authority: CN
Inventors: 汪卫星; 万旭东
Original assignee: DONGGUAN GUANHUI HARDWARE CO LTD
Current assignee: DONGGUAN GUANHUI HARDWARE CO LTD
Priority date: 2024-06-19
Filing date: 2024-06-19
Publication date: 2025-07-01
Anticipated expiration: 2034-06-19

Abstract

The application relates to the field of die processing, in particular to a die casting die for hooks, which has the technical scheme that: the upper die is provided with an upper cavity matched with the outer wall of the hook, the lower die is provided with a lower cavity matched with the outer wall of the hook, the upper cavity is matched with the lower cavity to form the hook, the lower die is provided with a lower avoidance groove and a core pulling groove, the core pulling groove is arranged in the lower avoidance groove, the lower avoidance groove is matched with the lower half of the core pulling groove, one end of the core pulling groove, which faces the lower cavity, is used for matching with a buckling position of the hook, the upper die is correspondingly provided with an upper avoidance groove matched with the upper half of the core pulling groove, the lower die is further provided with a casting head and a first runner, one end of the first runner is communicated with the casting head, the other end of the first runner is embedded in the lower avoidance groove and is communicated with the lower cavity, the bottom of the lower die is further provided with a thimble for demolding, and the thimble is located below the first runner. The application has the beneficial effects that the position of the loose core is stable, and the dimensional accuracy of the product is ensured.

Description

Die casting die of couple

Technical Field

The application relates to the field of die processing, in particular to a die casting die for a hook.

Background

The die casting die is a tool for casting metal parts, and the die casting process is basically carried out by casting molten metal into a cavity of a die at a low speed or at a high speed, wherein the die is provided with a movable cavity surface, and the movable cavity surface is pressed and forged along with the cooling process of the molten metal, so that not only is the shrinkage cavity shrinkage defect of a blank eliminated, but also the internal structure of the blank reaches the broken crystal grains in a forged state, therefore, the die casting die is widely applied when manufacturing parts required in some furniture, but for hooks partially consisting of mounting parts and hook parts, the side surfaces of the mounting parts of the hooks are provided with buckling positions, the current die casting die is generally provided with a movable core pulling mechanism in the side direction to complete the forming and demolding of the buckling positions, but during the die casting process, the molten metal is easy to form high pressure in the die, thereby the movement due to the high pressure can be caused, the precision of the size of the products is reduced, and the quality of the products is reduced.

Disclosure of utility model

The application aims to provide a die casting die for a hook, which has stable core pulling position and ensures the dimensional accuracy of a product.

In order to achieve the above purpose, the die casting die for the hook comprises an upper die and a lower die, wherein the upper die is provided with an upper cavity matched with the outer wall of the upper part of the hook, the lower die is provided with a lower cavity matched with the outer wall of the lower part of the hook, the upper cavity is matched with the lower cavity to form the hook, the lower die is provided with a lower avoidance groove and a core pulling core, the core pulling core is arranged in the lower avoidance groove, the lower avoidance groove is matched with the lower half part of the core pulling core, one end of the core pulling core facing the lower cavity is used for matching with a buckling position for forming the hook, the upper die is correspondingly provided with an upper avoidance groove matched with the upper half part of the core pulling core, the lower die is further provided with a casting head and a first runner, one end of the first runner is communicated with the casting head, the other end of the first runner is embedded in the lower avoidance groove and is communicated with the lower cavity, the bottom of the lower die is further provided with a thimble for demolding, and the first runner is positioned below the thimble for demolding.

Through adopting above-mentioned technical scheme, the molten metal enters into lower die cavity and last die cavity through first runner from the casting head, cool off the shaping couple, during the drawing of patterns, go up the mould and shift upward and break away from the lower mould, the thimble drives first runner and casting head jack-up, because first runner inlays in keeping away the position groove down, therefore first runner winds the bottom of loosing core, it shifts up to drive the loose core when first runner is by the jack-up, make loose core and couple synchronous upward move, thereby realize the drawing of patterns, because the latter half of loose core is arranged in keeping away the position groove down, the cell wall of keeping away the position groove down plays limiting effect to loosing core, make the position of loosing core more stable, avoid loosing core because of the high pressure takes place the displacement in the shaping process, thereby guarantee the dimensional accuracy of product, casting head and first runner are as independent part simultaneously, conveniently change and wash, reduce the condition that first runner is blocked up, further improve the quality of product.

Preferably, a limiting block is detachably and fixedly arranged on the side surface of the lower die, the lower clearance groove penetrates through the side surface of the lower die, and one end of the core pulling away from the lower die cavity is abutted against the limiting block.

Through adopting above-mentioned scheme, the setting of stopper makes loose core and stopper carry out the butt to make the position of loosing core more stable.

Preferably, the number of the lower cavities and the upper cavities is specifically four, and the four upper cavities and the lower cavities are respectively located around the casting head.

By adopting the technical scheme, the mould can simultaneously form four hooks, so that the production efficiency is improved.

Preferably, a plurality of connecting nozzles are arranged at the communication part of the first runner and the lower cavity or the upper cavity, and the connecting nozzles are flat.

Through adopting above-mentioned scheme, the connecting nozzle of platykurtic is favorable to molten metal to be full of down die cavity and last die cavity fast for the quality of product is better, reduces the production of bubble.

Preferably, the top of the hook is provided with an opening, the upper die is fixedly provided with an insert, the insert penetrates through the upper die, the lower end of the insert is inserted into the upper cavity, and the insert is used for matching with the opening of the formed hook.

Preferably, a protrusion is arranged on the hook part of the hook, and a groove corresponding to the protrusion of the hook is arranged in the upper cavity.

Preferably, the lower die is further provided with an exhaust passage, one end of the exhaust passage is communicated with the lower cavity, and the other end of the exhaust passage extends to the side face of the lower die.

Through adopting above-mentioned scheme, when the setting of exhaust duct makes the shaping, the in-process that lower die cavity and last die cavity were filled to the molten metal, and original gaseous accessible exhaust duct in lower die cavity and the last die cavity is quick to be favorable to the shaping of product.

In summary, the beneficial technical effects of the application are as follows:

1. The setting cell wall of keeping away the position groove down plays limiting displacement to loosing core for the position of loosing core is more stable, avoids loosing core because of the high pressure takes place the displacement in the shaping in-process, thereby guarantees the dimensional accuracy of product, and first runner is as solitary part simultaneously, conveniently changes the washing, reduces the condition that first runner blockked up, further improves the quality of product.

2. The flat connecting nozzle is beneficial to the molten metal to quickly fill the lower cavity and the upper cavity, so that the quality of the product is better, and the generation of bubbles is reduced.

Drawings

Fig. 1 is a schematic diagram of the upper die in this embodiment.

Fig. 2 is a schematic diagram of the structure of the lower die in the present embodiment.

Fig. 3 is a schematic diagram of the structure of the lower die after the hooks are hidden in the present embodiment.

Fig. 4 is a schematic structural diagram of the first flow channel in the present embodiment.

Reference numerals illustrate:

1. The mold comprises an upper mold, a lower mold, a hook, an upper cavity, a lower clearance groove, a core pulling groove, an upper clearance groove, a casting head, a first flow passage, a thimble, a limiting block, a mold insert, a groove, a connecting nozzle, a vent passage, a second flow passage and a connecting nozzle.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.

The application discloses a die casting die for a hook, which is shown in figures 1-3, and comprises an upper die 1 and a lower die 2, wherein the upper die 1 is provided with an upper die cavity 4 which is matched with the outer wall of the upper part of the hook 3, the lower die 2 is provided with a lower die cavity 5 which is matched with the outer wall of the lower part of the hook 3, the upper die cavity 4 is matched with the lower die cavity 5 to form the hook 3, the lower die 2 is provided with a lower avoidance groove 6 and a core pulling 7, the core pulling 7 is arranged in the lower avoidance groove 6, the lower avoidance groove 6 is matched with the lower half part of the core pulling 7, one end of the core pulling 7 facing the lower die cavity 5 is used for matching with a buckling position for forming the hook 3, the upper die 1 is correspondingly provided with an upper avoidance groove 8 which is matched with the upper half part of the core pulling 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 through the upper die 1 and is used for injecting metal liquid, one end of the first runner 10 is communicated with the casting head 9, the other end of the first runner 10 is embedded in the lower avoidance groove 6 and is communicated with the lower cavity 5, a thimble 11 for demolding is further arranged at the bottom of the lower die 2, the thimble 11 is positioned below the first runner 10, the thimble 11 is used for jacking the first runner 10 for demolding, metal liquid enters the lower cavity 5 and the upper cavity 4 from the casting head 9 through the first runner 10, the hook 3 is cooled and molded, during demolding, the upper die 1 moves upwards to be separated from the lower die 2, the thimble 11 drives the first runner 10 and the casting head 9 to jack, the first runner 10 is wound at the bottom of the core-pulling 7 because the first runner 10 is embedded in the lower avoidance groove 6, the core-pulling 7 is driven to move upwards when the first runner 10 is jacked, the core-pulling 7 and the hook 3 synchronously move upwards, so that demolding is realized, the lower half part of the core-pulling 7 is arranged in the lower avoidance groove 6, the groove wall of the lower avoidance groove 6 plays a limiting role on the core-pulling 7, the position of the core pulling 7 is more stable, the core pulling 7 is prevented from being displaced due to high pressure in the forming process, so that the dimensional accuracy of a product is guaranteed, meanwhile, the casting head 9 and the first flow channel 10 are used as independent components, can be separated from the lower die 2, are convenient to replace and clean, reduce the blocking condition of the first flow channel 10, and further improve the quality of the product.

In this embodiment, as shown in fig. 2 and 3, the number of the lower cavity 5 and the upper cavity 4 is specifically four groups, the four groups of upper cavities 4 and the lower cavity 5 are respectively located around the casting head 9, so that the mold can simultaneously form four hooks 3, the production efficiency is improved, the limiting block 12 is detachably and fixedly arranged on the side surface of the lower mold 2, the limiting block 12 is fixed on the side surface of the lower mold 2 through bolts, so that the position of the limiting block 12 is stable, the lower clearance groove 6 penetrates through the side surface of the lower mold 2, one end of the core-pulling 7, far away from the lower cavity 5, is abutted against the limiting block 12, and the setting of the limiting block 12 enables the core-pulling 7 to be abutted against the limiting block 12, so that the position of the core-pulling 7 is more stable.

As shown in fig. 1 and 2, an opening is formed in the top of the hook 3, an insert 13 is fixedly arranged on the upper die 1, the insert 13 penetrates through the upper die 1, the lower end of the insert 13 is inserted into the upper die cavity 4, the insert 13 is used for matching with the opening of the formed hook 3, a protrusion is arranged on the hook part of the hook 3, and a groove 14 corresponding to the protrusion of the hook 3 is formed in the upper die cavity 4.

As shown in fig. 4, a plurality of connecting nozzles 15 are arranged at the connection position of the first runner 10 and the lower cavity 5 or the upper cavity 4, the connecting nozzles 15 are flat, so that the connection area of the first runner 10 and the lower cavity 5 is increased, the flat connecting nozzles 15 are favorable for the molten metal to quickly fill the lower cavity 5 and the upper cavity 4, the quality of products is better, the generation of bubbles is reduced, the lower die 2 is further provided with an exhaust passage 16, one end of the exhaust passage 16 is communicated with the lower cavity 5, the other end of the exhaust passage 16 extends to the side surface of the lower die 2, the exhaust passage 16 is arranged in such a way that when in forming, the molten metal is filled into the lower cavity 5 and the upper cavity 4, original gas in the lower cavity 5 and the upper cavity 4 can be quickly discharged through the exhaust passage 16, thereby being favorable for forming products, a second runner 17 is further arranged on the lower die 2, the second runner 17 is used for connecting the exhaust passage 16 with the lower cavity 5, and the connection position of the second runner 17 and the lower cavity 5 is also provided with the flat connecting nozzles 15, and the exhaust passage 15 is connected with the lower cavity 5 through the connecting nozzles 15.

The implementation principle of the embodiment is as follows:

during forming, the upper die 1 is combined with the lower die 2, molten metal enters from the casting head 9 and enters into the lower cavity 5 and the upper cavity 4 through the first runner 10, the molten metal is rapidly filled in the upper cavity 4 and the lower cavity 5 under the action of the connecting nozzle 15, the forming hook 3 is cooled, during demoulding, the upper die 1 moves upwards to be separated from the lower die 2, the thimble 11 drives the first runner 10 and the casting head 9 to jack up, and as the first runner 10 is embedded in the lower clearance groove 6, the first runner 10 winds around the bottom of the core-pulling 7, and when the first runner 10 is jacked up, the core-pulling 7 is driven to move upwards, so that the core-pulling 7 and the hook 3 synchronously move upwards, and demoulding is realized.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

While specific examples have been described herein for the purpose of illustrating the principles and embodiments of the present utility model, the above examples are provided only to assist in understanding the method and core ideas of the present utility model, and the above description is merely a preferred embodiment of the present utility model, it should be noted that there are objectively unlimited specific structures due to the limited text expressions, and that it is possible for those skilled in the art to make several improvements, modifications or variations without departing from the principles of the present utility model, and to combine the above technical features in an appropriate manner, and such improvements, modifications or combinations, or to apply the inventive concepts and technical solutions directly to other occasions, should be regarded as the scope of the present utility model.

Claims

1. The die casting die for the hook is characterized by comprising an upper die (1) and a lower die (2), wherein the upper die (1) is provided with an upper cavity (4) which is matched with the outer wall of the upper part of the hook (3), the lower die (2) is provided with a lower cavity (5) which is matched with the outer wall of the lower part of the hook (3), the upper cavity (4) is matched with the lower cavity (5) for forming the hook (3), the lower die (2) is provided with a lower clearance groove (6) and a core pulling (7), the core pulling (7) is arranged in the lower clearance groove (6), the lower clearance groove (6) is matched with the lower half part of the core pulling (7), one end of the core pulling (7) faces towards the lower cavity (5) for being matched with a buckle position for forming the hook (3), the upper die (1) is correspondingly provided with an upper clearance groove (8) which is matched with the upper half part of the core pulling (7), the lower die (2) is also provided with a first runner (9) and a second runner (10), the first runner (10) is further arranged in the lower die (2), the second runner (10) is communicated with the first runner (10), the ejector pin (11) is located below the first runner (10), and the ejector pin (11) is used for ejecting the first runner (10) to perform demolding.

2. The die casting die for the hooks, as set forth in claim 1, characterized in that a limiting block (12) is detachably and fixedly disposed on a side surface of the lower die (2), the lower clearance groove (6) penetrates through the side surface of the lower die (2), and one end of the core pulling core (7) far away from the lower die cavity (5) is abutted against the limiting block (12).

3. The die casting mold for hooks according to claim 2, wherein the number of the lower cavities (5) and the upper cavities (4) is specifically four, and the four groups of the upper cavities (4) and the lower cavities (5) are respectively positioned around the casting head (9).

4. The die casting die for hooks according to claim 1, wherein a plurality of connecting nozzles (15) are arranged at the communication position of the first runner (10) and the lower cavity (5) or the upper cavity (4), and the connecting nozzles (15) are flat.

5. The die casting die for hooks according to claim 1, wherein the top of the hooks (3) is provided with openings, inserts (13) are fixedly arranged on the upper die (1), the inserts (13) penetrate through the upper die (1) and the lower ends of the inserts (13) are inserted into the upper die cavity (4), and the inserts (13) are used for matching with the openings for forming the hooks (3).

6. The die casting die for the hooks, as set forth in claim 1, characterized in that the hooks (3) are provided with protrusions, and the upper cavity (4) is provided with grooves (14) corresponding to the protrusions of the hooks (3).

7. The die casting die for hooks, as set forth in claim 4, characterized in that the lower die (2) is further provided with an exhaust passage (16), one end of the exhaust passage (16) is communicated with the lower cavity (5), and the other end of the exhaust passage (16) extends to the side surface of the lower die (2).