CN210702471U - Die-casting forming die - Google Patents

Abstract

The utility model belongs to the technical field of die-casting, and discloses a die-casting molding die, which comprises a fixed die. A die core is installed at the middle position of the upper surface wall of the fixed die, and the fixed die is installed inside and at the bottom end of the die core. There is a serpentine cooling pipe, one end of the serpentine cooling pipe is connected with a water inlet pipe, and one end of the serpentine cooling pipe away from the water inlet pipe is connected with a water outlet pipe, the water inlet pipe and the water outlet pipe both penetrate the fixed mold and extend to its side Outside the wall, the four corners of the upper surface wall of the fixed mold are connected with sliding rods. The utility model lays a serpentine cooling pipe at the bottom of the mold core for heat exchange, and the serpentine cooling pipe can increase the cooling capacity in the mold core. The contact area and contact time between the high-temperature metal and the cold water can fully absorb the heat in the short time when the cold water passes through the fixed die, and the cooling speed is fast. In addition, the cooling water flows out from the outlet pipe for collection after heat exchange, and can be repeated after cooling again. use to avoid waste of water resources.

Description

A die-casting mold

technical field

The utility model belongs to the technical field of die casting, in particular to a die casting mould.

Background technique

Die casting is a metal casting process, which is characterized by applying high pressure to the molten metal by using the inner cavity of the mold. Die casting is especially suitable for the manufacture of a large number of small and medium-sized castings. Therefore, die casting is the most widely used of various casting processes. Compared with technology, die casting has a flatter surface and higher dimensional consistency.

In the Chinese patent with the patent number of CN201720239418.7, a die-casting mold is disclosed. The patent describes that "the cooling of the castings by circulating water can shorten the molding time of the castings and improve the quality of the castings", but in the patent, the circulating water and the The metal contact time in the mold core is not long enough, the contact area is narrow, the heat exchange cannot be sufficient, and the cooling efficiency is low. In addition, there is no effective guide structure for the die-casting mold in the document, which is prone to deviation during die-casting, resulting in unqualified products. It can only be reworked or discarded, increasing the workload of the staff and causing waste of resources.

Utility model content

The purpose of this utility model is to provide a kind of die-casting mould, in order to solve the problem that the contact time between circulating water and the metal in the mould core is not long enough, the contact area is narrow, and the cooling efficiency is low in the reference document proposed in the above-mentioned background art. An effective guide structure is provided, which is prone to deviation problems during die casting.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a die-casting mold, comprising a fixed mold, a mold core is installed at the middle position of the upper surface wall of the fixed mold, and the fixed mold is located inside and at the bottom of the mold core. A serpentine cooling pipe is installed at the end, one end of the serpentine cooling pipe is connected with a water inlet pipe, and one end of the serpentine cooling pipe away from the water inlet pipe is connected with a water outlet pipe, and both the water inlet pipe and the water outlet pipe pass through the fixed mold and extend to Outside the side wall, the four corners of the upper surface wall of the fixed die are connected with sliding rods, the top of the sliding rod is connected with a first mounting plate, and a hydraulic pressure is installed at the middle position of the top of the first mounting plate. The bottom end of the hydraulic cylinder is connected with a hydraulic telescopic rod, the hydraulic telescopic rod penetrates the first mounting plate and extends below it, and the bottom end of the hydraulic telescopic rod is connected with a pressure plate, the upper surface wall of the pressure plate is four Each corner is provided with a through hole matching the sliding rod, and a movable mold is fixed on the lower wall of the pressing plate.

Preferably, a hollow column is symmetrically fixed on the upper surface wall of the fixed die and located on both sides of the die core, the inner bottom of the hollow column is connected with a guide column, the outer part of the guide column is sleeved with a return spring, and the moving The two side walls of the die are symmetrically connected with guide blocks, the middle position of the lower wall of the guide block is provided with a guide groove that is adapted to the guide column, and the lower wall of the guide block is located on the periphery of the guide groove. Hollow column is suitable for the through groove.

Preferably, the inner wall of the guide groove is bonded with a sound-absorbing cotton layer, and the inner wall of the sound-absorbing cotton layer is smooth without protrusions.

Preferably, the bottom end of the fixed mold is fixed with a second mounting plate, and the outer wall of the second mounting plate is provided with mounting holes.

Preferably, the outer cover of the hydraulic cylinder is provided with a protective cover, and the outer wall of the protective cover is provided with cooling holes.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model lays a serpentine cooling pipe at the bottom of the mold core for heat exchange, and the serpentine cooling pipe can increase the contact area and contact time between the high-temperature metal in the mold core and the cold water, and can pass through the fixed mold in the cold water. It can fully absorb heat in a short period of time, improve the efficiency of heat exchange, and the cooling speed is fast. In addition, the cooling water flows out from the outlet pipe for collection after heat exchange, and can be reused after cooling again, avoiding the waste of water resources.

(2) Through the cooperation of the hollow column, the guide column, the guide block and the guide groove, the utility model can ensure that the movable die and the fixed die match during die casting, prevent deviation during die casting, ensure the qualified rate of the product, and avoid Waste of resources and increased workload of rework, in addition, the return spring can effectively buffer the excessive pressure during die casting, avoid damage caused by the impact between the movable and fixed dies, and prolong the service life of the die.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the sectional view of the hollow column of the utility model;

Fig. 3 is the bottom view of the utility model guide block;

Fig. 4 is the sectional view of the utility model fixed mold;

Fig. 5 is the top view of the utility model pressing plate;

In the picture: 1-fixed die, 2-water inlet pipe, 3-hollow column, 4-slide rod, 5-pressing plate, 6-first mounting plate, 7-hydraulic telescopic rod, 8-hydraulic cylinder, 9-moving die, 10-Guide block, 11-Mold core, 12-Water outlet pipe, 13-Guide post, 14-Return spring, 15-Through groove, 16-Silence cotton layer, 17-Guide groove, 18-Snake cooling pipe, 19- Through hole, 20-Second mounting plate.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 5 , the present invention provides a technical solution: a die-casting mold, including a fixed mold 1 , a mold core 11 is installed at the middle position of the upper surface wall of the fixed mold 1 , and inside the fixed mold 1 And a serpentine cooling pipe 18 is installed at the bottom end of the mold core 11, one end of the serpentine cooling pipe 18 is connected with the water inlet pipe 2, and one end of the serpentine cooling pipe 18 away from the water inlet pipe 2 is connected with a water outlet pipe 12, and the water inlet pipe 2 Both the water outlet pipe 12 and the fixed mold 1 penetrate through the fixed mold 1 and extend to the outside of its side wall. After die casting, cooling water can be passed through the water inlet pipe 2, and then heat exchange is carried out through the serpentine cooling pipe 18, and the serpentine cooling pipe 18 can increase The contact area and contact time between the high-temperature metal in the large die core 11 and the cold water can fully absorb heat in a short time when the cold water passes through the fixed die 1, thereby improving the efficiency of heat exchange, and the cold water after heat exchange flows out from the water outlet pipe 12, After collecting and cooling, it can be reused, saving water resources. The four corners of the upper surface wall of the fixed die 1 are connected with sliding rods 4, and the top of the sliding rod 4 is connected with a first mounting plate 6. A hydraulic cylinder 8 is installed at the middle position of the top, the bottom end of the hydraulic cylinder 8 is connected with a hydraulic telescopic rod 7, the hydraulic telescopic rod 7 penetrates the first mounting plate 6 and extends to the bottom thereof, and the bottom end of the hydraulic telescopic rod 7 is connected with a pressure plate 5. The four corners of the upper surface wall of the pressing plate 5 are provided with through holes 19 matching with the sliding rods 4 , and the movable mold 9 is fixed on the lower wall of the pressing plate 5 .

Further, a hollow column 3 is symmetrically fixed on the upper surface wall of the fixed die 1 and located on both sides of the die core 11. The inner bottom of the hollow column 3 is connected with a guide column 13. The two side walls of 9 are symmetrically connected with guide blocks 10, the middle position of the lower wall of the guide block 10 is provided with a guide groove 17 that is adapted to the guide column 13, and the lower wall of the guide block 10 is located at the periphery of the guide groove 17. There is a through groove 15 which is matched with the hollow column 3. During die casting, the movable die 9 can be pressed down so that the hollow column 3 can be inserted into the through groove 15 opened on the lower wall of the guide block 10, so as to ensure the movable die 9 and the fixed die. 1, to prevent deviation during die-casting and ensure the qualified rate of the product. In addition, during die-casting, the return spring 14 shrinks, and the reverse elastic force generated can effectively buffer the excessive pressure during die-casting and reduce damage to the mold.

Further, the inner wall of the guide groove 17 is bonded with a sound-absorbing cotton layer 16, and the inner wall of the sound-absorbing cotton layer 16 is smooth without protrusions. The bonding of the sound-absorbing cotton layer 16 can reduce the sound produced by extrusion during die casting and reduce noise pollution.

Further, the bottom end of the fixed mold 1 is fixed with a second mounting plate 20, and the outer wall of the second mounting plate 20 is provided with mounting holes, and the abrasive tool can be stably installed by opening the second mounting plate 20 with the mounting holes. , to avoid shaking during operation.

Further, the outer cover of the hydraulic cylinder 8 is provided with a protective cover, and the outer wall of the protective cover is provided with heat dissipation holes. The protective cover can effectively protect the hydraulic cylinder 8 and avoid the collision and damage of the hydraulic cylinder 8. The heat dissipation holes opened are convenient for the hydraulic cylinder 8. Heat dissipation during operation.

The working principle and use process of the utility model: when the utility model is in use, the staff first injects the high-temperature liquid metal to be pressed into the mold core 11, and then uses the hydraulic movement of the hydraulic cylinder 8 to drive the hydraulic telescopic rod 7 to expand and contract, and then drives the The pressing plate 5 with the through hole 19 moves down along the sliding rod 4, so that the movable die 9 is attached to the fixed die 1 for die casting. During die casting, pressing the movable die 9 down allows the hollow column 3 to be inserted under the guide block 10. At the same time, the guide column 13 is inserted into the guide groove 17 to ensure that the movable mold 9 and the fixed mold 1 match, prevent deviation during die casting, and avoid the waste of resources and increase the workload of rework. , In addition, during die-casting, the return spring 14 is in a contracted state, and the reverse elastic force generated can effectively buffer the excessive pressure during die-casting. In addition, after die-casting, cooling water can be passed through the water inlet pipe 2, and then cooled by a serpentine The tube 18 performs heat exchange, and the serpentine cooling tube 18 can increase the contact area and contact time between the high temperature metal in the mold core 11 and the cold water, thereby improving the efficiency of heat exchange.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. A die-casting mold, characterized in that it comprises a fixed mold (1), a mold core (11) is installed at the middle position of the upper surface wall of the fixed mold (1), and the inside of the fixed mold (1) is A serpentine cooling pipe (18) is installed at the bottom end of the mold core (11), one end of the serpentine cooling pipe (18) is connected with a water inlet pipe (2), and the serpentine cooling pipe (18) is far away from the water inlet pipe (18). 2) One end is connected with a water outlet pipe (12), the water inlet pipe (2) and the water outlet pipe (12) both penetrate through the fixed mold (1) and extend to the outside of the side wall thereof, and the upper surface wall of the fixed mold (1) is A sliding rod (4) is connected to the four corners of the sliding rod (4), a first mounting plate (6) is connected to the top of the sliding rod (4), and a hydraulic A cylinder (8), the bottom end of the hydraulic cylinder (8) is connected with a hydraulic telescopic rod (7), the hydraulic telescopic rod (7) penetrates through the first mounting plate (6) and extends below it, and the hydraulic telescopic rod (7) The bottom end of (7) is connected with a pressure plate (5), the four corners of the upper surface wall of the pressure plate (5) are provided with through holes (19) matching the sliding rod (4), and the pressure plate (5) A movable die (9) is fixed on the bottom wall of the . 2. A die-casting mold according to claim 1, characterized in that: the upper surface wall of the fixed mold (1) is symmetrically fixed with hollow columns (3) on both sides of the mold core (11). The inner bottom of the hollow column (3) is connected with a guide column (13), the outside of the guide column (13) is sleeved with a return spring (14), and the two side walls of the movable die (9) are symmetrically connected with guide blocks (10), a guide groove (17) adapted to the guide column (13) is provided at the middle position of the lower wall of the guide block (10), the lower wall of the guide block (10) is located in the guide groove The periphery of (17) is provided with a through groove (15) adapted to the hollow column (3). 3. A die-casting mold according to claim 2, characterized in that: the inner wall of the guide groove (17) is bonded with a sound-absorbing cotton layer (16), and the inner wall of the sound-absorbing cotton layer (16) is smooth and free of Raised. 4. A die-casting mold according to claim 1, characterized in that: a second mounting plate (20) is fixed at the bottom end of the fixed mold (1), and an outer surface of the second mounting plate (20) is fixed. The wall is provided with mounting holes. 5 . The die-casting mold according to claim 1 , wherein the outer cover of the hydraulic cylinder ( 8 ) is provided with a protective cover, and the outer wall of the protective cover is provided with heat dissipation holes. 6 .

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