Metal casting hot press molding device

Abstract

The utility model discloses a hot press molding device for a metal casting. The hot press molding device comprises an upper die and a lower die, the suction assembly is arranged in the lower mold and comprises an air cylinder driven to extract or exhaust air, and a spraying core is arranged at a port of the air cylinder; the condensing cylinder is arranged on the air cylinder and is used for accommodating condensate; the first end of the water storage cavity is communicated with the condensation cylinder through a water outlet pipe, and the second end opposite to the first end is integrally assembled with the spray core; and the one-way valve is arranged on the inner wall of the inflator and penetrates through the water outlet pipe. According to the hot-press forming device for the metal casting, gas generated below the interior of the lower mold is pumped into the gas cylinder through the gas cylinder, the problem that the metal casting is bubbled due to the gas is avoided, then the gas cylinder is controlled to exhaust gas, condensate is driven to be sprayed out, the lower portion of a raw material is cooled, and the demolding efficiency between the raw material and the lower mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal casting processing, in particular to a metal casting hot pressing forming device. Background Art

[0002] Hot pressing of metal castings is a metal processing process that places the heated and softened metal castings in a hot press and plastically deforms them under high temperature and high pressure to obtain metal parts of the desired shape and size.

[0003] In conjunction with publication number CN215544405U, publication date 2022-01-18, a hot pressing forming device for metal casting processing is disclosed.

[0004] In the prior art including the above patents, the hydraulic cylinder can be activated to drive the upper mold to perform hot pressing on the metal casting on the lower mold, and the metal casting can be positioned under the cooperation of the two first inclined blocks and the two second inclined blocks to prevent it from shifting during hot pressing. However, due to the high temperature of the metal casting itself, a small high-temperature enclosed space is generated after being surrounded by the upper and lower molds and the positioning plate. The high-temperature enclosed space may cause the original residual compounds to vaporize and gather under the metal casting, causing the metal casting to bubble as the upper mold is pressed downward. Utility Model Content

[0005] The utility model aims to provide a metal casting hot pressing forming device to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal casting hot pressing forming device, comprising an upper mold and a lower mold;

[0007] The suction assembly disposed inside the lower mold includes:

[0008] A driven pump for extracting or exhausting air, the port of which is provided with a nozzle;

[0009] A condensation cylinder arranged on the gas cylinder and used to contain condensate;

[0010] A water storage chamber, a first end of which is connected to the condensation cylinder through a water outlet pipe, and a second end opposite thereto is integrally assembled with the spray core;

[0011] A one-way valve is arranged on the inner wall of the gas cylinder, and the water outlet pipe runs through the one-way valve.

[0012] Preferably, a bucket neck is provided at the first end of the water storage chamber, and the water storage chamber is divided by the bucket neck into two chambers of uneven sizes and interconnected, and the first end of the water storage chamber is a small chamber.

[0013] Preferably, a conical plug for sealing the small chamber is provided inside the neck of the bucket, and the conical plug is pushed by water pressure.

[0014] Preferably, an elastic member is provided on the conical plug.

[0015] Preferably, a sliding block is slidably arranged in the air cylinder, an inclined block is arranged on the upper mold, and a sliding fit is formed between the inclined block and the sliding block, and a return spring is arranged on the sliding block.

[0016] Preferably, the nozzle is a triangular prism structure that is larger at the top and smaller at the bottom, and a triangular folded metal sheet is movably abutted inside the nozzle.

[0017] In the above technical scheme, the utility model provides a metal casting hot pressing forming device, which has the following beneficial effects: through the air cylinder suction, the gas generated at the lower part of the lower mold is sucked into the air cylinder to avoid the gas causing bubbling of the metal casting, and then the air cylinder is controlled to exhaust and drive the condensate to spray out, so as to cool the bottom of the raw material and speed up the demolding efficiency between the raw material and the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 An overall three-dimensional schematic diagram provided for an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the overall cutaway position provided for an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of a suction assembly provided in an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the interior of a suction assembly provided by an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of a water storage chamber and a conical plug provided in an embodiment of the utility model;

[0024] Figure 6 Schematic diagram of the nozzle core and the three-sided folded metal sheet provided in the embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Upper mold; 11. Oblique block; 2. Lower mold; 3. Suction assembly; 31. Spray core; 311. Triangular folded metal sheet; 32. Condensation cylinder; 33. Air cylinder; 331. Sliding block; 34. Water outlet pipe; 35. Water storage chamber; 351. Bucket neck; 352. Conical plug. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1-6 As shown, a metal casting hot pressing forming device comprises an upper mold 1 and a lower mold 2;

[0029] The suction assembly 3 disposed inside the lower mold 2 includes:

[0030] A driven air cylinder 33 for pumping or exhausting air, the port of which is provided with a spray core 31;

[0031] A condensation cylinder 32 for containing condensate;

[0032] The water storage chamber 35 has a first end connected to the condensation cylinder 32 through the water outlet pipe 34, and a second end opposite thereto is integrally assembled with the spray core 31;

[0033] A one-way valve is arranged on the inner wall of the air cylinder 33, and the water outlet pipe 34 runs through the one-way valve.

[0034] Specifically, a high-temperature metal casting raw material is placed on the lower mold 2, the upper mold 1 is moved downward and the air cylinder 33 is driven to evacuate air, and the gas generated at the lower part of the lower mold 2 is sucked into the air cylinder 33, so that the gas generated during the hot pressing process passes through the one-way valve and enters the air cylinder 33. After the hot pressing is completed, the upper mold 1 moves upward, and the air cylinder 33 is driven to exhaust air again. The gas cannot pass through the one-way valve and can only enter the condensation cylinder 32, so that the air pressure of the condensation cylinder 32 is higher than the internal hydraulic pressure, so that the condensate in the condensation cylinder 32 enters the water storage chamber 35 through the water outlet pipe 34, and splashes onto the spray core 31 to be atomized into a spray, thereby cooling the lower part of the raw material and accelerating the demolding efficiency between the raw material and the lower mold 2; the driving of the air cylinder 33 can control the suction mechanism to evacuate or exhaust air at a fixed time through a timing program, or manually control the evacuation or exhaust air, or any control method known to technicians in this field.

[0035] In the above technology, the gas generated inside the lower part of the lower mold 2 is sucked into the gas cylinder 33 through the air cylinder 33 to avoid the gas causing bubbling problems in the metal casting. Then the gas cylinder 33 is controlled to exhaust and drive the condensate to spray out, so as to cool the lower part of the raw material and speed up the demolding efficiency between the raw material and the lower mold 2.

[0036] As an embodiment further provided by the present invention, a bucket neck 351 is provided at the first end of the water storage chamber 35, and the water storage chamber 35 is divided by the bucket neck 351 into two chambers of uneven sizes and interconnected with each other, and the first end of the water storage chamber 35 is a small chamber.

[0037] Specifically, the cross section of the water storage chamber 35 is an uneven funnel shape. The condensate in the water outlet pipe 34 is first stored in the large chamber, and then enters the small chamber and contacts the spray core 31. Since the channel connecting the large and small chambers is narrow, the condensate is pressurized and accelerated when passing through the channel.

[0038] As another embodiment further provided by the present invention, a conical plug 352 for sealing the small chamber is provided in the bucket neck 351, and the conical plug 352 is pushed by water pressure.

[0039] Specifically, the condensate is pressurized and accelerated in the channel, thereby overcoming the elastic force of the elastic member to push the conical plug 352, so that the conical plug 352 no longer blocks the small chamber, and the condensate is separated by the conical plug 352 when spraying outward to form a conical liquid surface, which contacts the spray core 31 and atomizes. When the condensate is sprayed, the water pressure is insufficient, and the conical plug 352 blocks the small chamber under the elastic action of the elastic member, blocking the condensate in the large chamber, preventing the condensate with insufficient pressure from contacting the spray core 31 to form droplets, thereby achieving a better anti-drip effect. The above-mentioned elastic member can be a spring, or an elastic paddle, or other elastic mechanisms known to those skilled in the art.

[0040] As another embodiment further provided by the present invention, a sliding block 331 is slidably arranged in the air cylinder 33, an inclined block 11 is arranged on the upper mold 1, and a sliding fit is formed between the inclined block 11 and the sliding block 331, and a return spring is arranged on the sliding block 331.

[0041] Specifically, during the downward movement of the upper mold 1, the inclined block 11 is driven to move downward and slide with the sliding block 331. During the sliding, the sliding block 331 is pushed to slide away from the air cylinder 33 and a negative pressure environment is created in the air cylinder 33, driving the air cylinder 33 to evacuate air. When the upper mold 1 moves upward, it no longer pushes the sliding block 331, so that the sliding block 331 approaches the air cylinder 33 under the action of the return spring, thereby achieving the exhaust of the air cylinder 33.

[0042] As another embodiment further provided by the present invention, the riser 31 is a triangular prism structure with a larger top and a smaller bottom, and a triangular folded metal sheet 311 is movably abutted inside the riser.

[0043] Specifically, the triangular pyramid structure allows the liquid droplets to splash outward when they contact the side of the triangular pyramid, thereby expanding the splashing range of the liquid droplets. At the same time, the triangular folded metal sheet 311 that is movably abutted inside the spray core 31 has a certain elasticity, and produces slight vibrations after being pushed by water pressure, thereby turning the liquid droplets into tiny droplets through vibration, and at the same time driving the spray core 31 to tremble as a whole, thereby improving the atomization efficiency.

[0044] Working principle: Place the high-temperature metal casting raw material on the lower mold 2, move the upper mold 1 downward, drive the inclined block 11 to move downward and slide with the sliding block 331, push the sliding block 331 to slide away from the gas cylinder 33 during the sliding, and make the gas cylinder 33 present a negative pressure environment, drive the gas cylinder 33 to evacuate, and draw the gas generated below the lower mold 2 into the gas cylinder 33, so that the gas generated during the hot pressing process passes through the one-way valve and enters the gas cylinder 33. After the hot pressing is completed, the upper mold 1 moves upward and no longer pushes the sliding block 331, so that the sliding block 331 approaches the gas cylinder 33 under the action of the return spring, thereby achieving the exhaust of the gas cylinder 33, and the gas cannot pass through the one-way valve and can only enter the condensation cylinder 32, so that the air pressure of the condensation cylinder 32 is higher than that of the internal The hydraulic pressure is high, so that the condensate in the condensation cylinder 32 enters the water storage chamber 35 through the water outlet pipe 34, first enters the large chamber for storage, and then enters the small chamber and contacts the spray core 31. Since the channel connecting the large and small chambers is narrow, the condensate is pressurized and accelerated when passing through the channel, thereby overcoming the elastic force of the elastic member to push the conical plug 352, so that the conical plug 352 no longer blocks the small chamber. When the condensate is sprayed outward, it is separated by the conical plug 352 to form a conical liquid surface, which contacts the spray core 31 and atomizes. When the condensate is sprayed, the water pressure is insufficient, and the conical plug 352 blocks the small chamber under the elastic action of the elastic member, blocking the condensate in the large chamber, preventing the condensate with insufficient pressure from contacting the spray core 31 to form droplets, and achieving a better anti-drip effect.

[0045] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hot pressing forming device for metal castings, It is characterized in that It comprises an upper mold (1) and a lower mold (2); The suction assembly (3) disposed inside the lower mold (2) comprises: A gas cylinder (33) driven to pump or exhaust air, the port of which is provided with a nozzle core (31); A condensation cylinder (32) disposed on the gas cylinder (33) and used to contain condensate; A water storage chamber (35), a first end of which is connected to the condensation cylinder (32) through a water outlet pipe (34), and a second end opposite thereto is integrally assembled with the spray core (31); A one-way valve is arranged on the inner wall of the air cylinder (33), and a water outlet pipe (34) passes through the one-way valve.

2. A metal casting hot pressing forming device according to claim 1, It is characterized in that The first end of the water storage chamber (35) is provided with a bucket neck (351), and the water storage chamber (35) is divided by the bucket neck (351) into two chambers of uneven sizes and interconnected with each other, and the first end of the water storage chamber (35) is a small chamber.

3. A metal casting hot pressing forming device according to claim 2, It is characterized in that A conical plug (352) for sealing the small chamber is arranged in the bucket neck (351), and the conical plug (352) is pushed by water pressure.

4. A metal casting hot pressing forming device according to claim 3, It is characterized in that The conical plug (352) is provided with an elastic member.

5. A metal casting hot pressing forming device according to claim 1, It is characterized in that A sliding block (331) is slidably arranged in the air cylinder (33), an inclined block (11) is arranged on the upper mold (1), and a sliding fit is formed between the inclined block (11) and the sliding block (331), and a return spring is arranged on the sliding block (331).

6. A metal casting hot pressing forming device according to claim 1, It is characterized in that The spray core (31) is a triangular prism-shaped structure that is larger at the top and smaller at the bottom, and a triangular folded metal sheet (311) is movably abutted inside the spray core.

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