Cold extrusion forming die with cooling function

Abstract

The utility model provides a cold extrusion forming die with cooling function belongs to mechanical technical field. It solved the problem of the existing cold extrusion forming die scalds personnel. This cold extrusion forming die with cooling function includes mounting seat, mould core and the compression plate of ring shape, the mould core is located in the mounting seat, and the compression plate is fixedly connected with the mounting seat, and the compression plate is pressed in the mould core to make the mould core fixed, the compression plate is equipped with cooling runner, and the cooling runner has the water inlet and water outlet that communicate to the outside of compression plate, and the compression plate still has the sealing structure that prevents the leakage of cooling runner. The utility model will not damage the blank saponification layer, and the cooling effect is good, and the use safety is good.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a mold, particularly a cold extrusion forming mold with a cooling function. Background Technology

[0002] Cold extrusion forming is a processing method in which a metal blank is placed in the cavity of a cold extrusion forming die, and pressure is applied to the blank by a fixed punch on a press at room temperature, causing the metal blank to undergo plastic deformation to obtain a part.

[0003] Cold extrusion forming dies also include pressure plates that press the die core together. During continuous operation, the heat generated by the deformation of the metal blank is transferred to the pressure plate, causing the pressure plate temperature to reach as high as 80°C. Workers are prone to burns to their hands and arms when loading and unloading materials, making the use of the pressure plate less than ideal. The pressure plate needs to be cooled down. However, cold extrusion forming dies cannot be externally cooled like hot forging, warm forging, or machining. This is because the external spraying of graphite or coolant used in hot forging, warm forging, or machining will damage the saponification layer on the surface of the blank during cold extrusion forming, resulting in unqualified cold extrusion forming products. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a cold extrusion forming die with a cooling function that does not damage the saponification layer of the blank and has a good cooling effect.

[0005] The objective of this utility model can be achieved through the following technical solution: a cold extrusion forming die with cooling function, comprising a mounting base, a die core, and an annular pressure plate, wherein the die core is located inside the mounting base, the pressure plate is fixedly connected to the mounting base, and the pressure plate presses against the die core to fix the die core, characterized in that the pressure plate is provided with a cooling channel, the cooling channel having an inlet and an outlet connected to the outside of the pressure plate, and the pressure plate also having a sealing structure to prevent leakage of the cooling channel.

[0006] In the aforementioned cold extrusion forming die with cooling function, the pressure plate includes an upper plate and a lower plate, both of which are annular. The bottom surface of the upper plate is attached to the top surface of the lower plate. The inner ring of the upper plate is radially convex to form a pressing part between it and the inner ring of the lower plate. The top corner of the die core has a step for the pressing part to press and position. Several bolts pass through the upper plate and the lower plate and are threadedly connected to the mounting base. A cooling channel is provided between the upper plate and the lower plate.

[0007] In the aforementioned cold extrusion forming die with cooling function, the bottom surface of the upper plate has a cooling channel, and the inlet and outlet of the cooling channel are both connected to the top surface of the upper plate.

[0008] In the aforementioned cold extrusion forming die with cooling function, the cooling channel is a series of arc-shaped grooves connected end to end, with the two ends of the grooves connected to the inlet and outlet respectively.

[0009] In another scenario, in the aforementioned cold extrusion forming die with cooling function, the cooling channel is a spiral groove, with the two ends of the spiral groove connected to the inlet and outlet, respectively. This results in a large distribution area of ​​cooling channels, providing excellent cooling effect for the upper and lower plates.

[0010] In the aforementioned cold extrusion forming die with cooling function, the sealing structure includes an outer sealing ring and an inner sealing ring embedded in the lower plate, and a cooling channel is provided between the outer sealing ring and the inner sealing ring.

[0011] In another scenario, in the aforementioned cold extrusion forming die with cooling function, the sealing structure includes a sealing gasket. This gasket is embedded in the lower plate and seals the bottom surface of the upper plate, with the cooling channel located within the sealing area of ​​the gasket. The sealing gasket serves a sealing function, preventing cooling water leakage from the cooling channel.

[0012] Compared with existing technologies, this cold extrusion forming die with cooling function effectively cools the pressure plate, preventing burns to workers due to excessive pressure plate temperature, thus ensuring good safety. Furthermore, the built-in cooling channels prevent damage to the saponification layer on the blank surface, guaranteeing a high yield. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the structure of this cold extrusion forming die with cooling function.

[0014] Figure 2 This is a cross-sectional view of the pressure plate in this cold extrusion forming die with cooling function.

[0015] Figure 3 This is a bottom view of the upper plate of this cold extrusion forming die with cooling function.

[0016] In the diagram, 1 is the mounting base; 2 is the mold core; 3 is the pressure plate; 31 is the upper plate; 32 is the lower plate; 4 is the cooling channel; 5 is the water inlet; 6 is the water outlet; 7 is the bolt; 8 is the outer sealing ring; and 9 is the inner sealing ring. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1 , Figure 2 and Figure 3As shown, this cold extrusion forming die with cooling function includes a mounting base 1, a die core 2, and an annular pressure plate 3. The die core 2 is located inside the mounting base 1, and the pressure plate 3 is fixedly connected to the mounting base 1. The pressure plate 3 presses against the die core 2 to fix the die core 2. The pressure plate 3 is provided with a cooling channel 4, which has an inlet 5 and an outlet 6 that connect to the outside of the pressure plate 3. The pressure plate 3 also has a sealing structure to prevent leakage of the cooling channel 4.

[0019] When using this cold extrusion forming die with cooling function, the inlet 5 and outlet 6 are used to connect to the existing chiller. The chiller inputs cooling water into the cooling channel 4 through the inlet 5, and then returns it to the chiller through the outlet 6, thereby effectively cooling the pressure plate 3 and preventing the pressure plate 3 from overheating and burning the workers. It is safe to use. Moreover, the pressure plate 3 is cooled by the built-in cooling channel 4, which will not damage the saponification layer on the surface of the blank, thus ensuring the yield.

[0020] To elaborate further, the pressure plate 3 includes an upper plate 31 and a lower plate 32, both of which are annular. The bottom surface of the upper plate 31 is attached to the top surface of the lower plate 32. The inner ring of the upper plate 31 convexes radially inward to form a clamping part with the inner ring of the lower plate 32. The top corner of the mold core 2 has a step for clamping and positioning the clamping part. Several bolts 7 pass through the upper plate 31 and the lower plate 32 and are threadedly connected to the mounting base 1. A cooling channel 4 is provided between the upper plate 31 and the lower plate 32. In this way, the inner ring of the lower plate 32 abuts against the side wall of the step, the bottom wall of the step abuts against the bottom surface of the lower plate 32, and the bottom surface of the radially inward convex part of the upper plate 31 abuts against the top surface of the mold core 2. The pressure plate 3 has a good clamping effect on the mold core 2, and the bottom surface of the upper plate 31 and / or the top surface of the lower plate 32 are convenient for processing the cooling channel 4.

[0021] In this embodiment, the bottom surface of the upper plate 31 has a cooling channel 4, and the inlet 5 and outlet 6 of the cooling channel 4 are both connected to the top surface of the upper plate 31. The inlet 5 and outlet 6 at the top surface of the upper plate 31 facilitate connection to a chiller; during operation, the worker's hands or arms are basically in contact with the upper plate 31, and the cooling channel 4 is located at the upper plate 31, which makes the upper plate 31 cool down quickly and improves the safety of use.

[0022] In this embodiment, the cooling channel 4 is a series of arc-shaped grooves connected end to end, with the inlet 5 and outlet 6 connected to the two ends of the grooves, respectively. This reasonable layout of the cooling channel 4 covers a large area of ​​the upper plate 31, effectively removing heat from the upper plate 31 and lower plate 32, resulting in good cooling effect.

[0023] In this embodiment, the sealing structure includes an outer sealing ring and an inner sealing ring embedded in the lower plate 32, and a cooling channel 4 is located between the outer sealing ring 8 and the inner sealing ring 9. The outer sealing ring 8 and the inner sealing ring 9 serve a sealing function to prevent cooling water leakage in the cooling channel 4 and ensure safe use.

[0024] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A cold extrusion forming die with cooling function, comprising a mounting base (1), a die core (2), and an annular pressure plate (3), wherein the die core (2) is located inside the mounting base (1), the pressure plate (3) is fixedly connected to the mounting base (1), and the pressure plate (3) presses against the die core (2) to fix the die core (2), characterized in that, The pressure plate (3) is provided with a cooling channel (4), which has an inlet (5) and an outlet (6) connected to the outside of the pressure plate (3). The pressure plate (3) also has a sealing structure to prevent leakage of the cooling channel (4).

2. The cold extrusion forming die with cooling function according to claim 1, characterized in that, The pressure plate (3) includes an upper plate (31) and a lower plate (32) that are both annular. The bottom surface of the upper plate (31) is attached to the top surface of the lower plate (32). The inner ring of the upper plate (31) is radially convex to form a pressing part between it and the inner ring of the lower plate (32). The top corner of the mold core (2) has a step for pressing and positioning of the pressing part. Several bolts (7) pass through the upper plate (31) and the lower plate (32) and are threadedly connected to the mounting base (1). A cooling channel (4) is provided between the upper plate (31) and the lower plate (32).

3. The cold extrusion forming die with a cooling function according to claim 2, characterized in that, The bottom surface of the upper plate (31) has a cooling channel (4), and the inlet (5) and outlet (6) of the cooling channel (4) are connected to the top surface of the upper plate (31).

4. The cold extrusion forming die with a cooling function according to claim 3, characterized in that, The cooling channel (4) is a series of arc-shaped grooves connected end to end, with the inlet (5) and outlet (6) connected at both ends of the grooves respectively.

5. A cold extrusion forming die with cooling function according to claim 3, characterized in that, The cooling channel (4) is a spiral groove, and the two ends of the spiral groove are connected to the water inlet (5) and the water outlet (6), respectively.

6. The cold extrusion forming die with a cooling function according to claim 4 or 5, characterized in that, The sealing structure includes an outer sealing ring (8) and an inner sealing ring (9) embedded in the lower plate (32), and a cooling channel (4) is provided between the outer sealing ring (8) and the inner sealing ring (9).

7. The cold extrusion forming die with a cooling function according to claim 4 or 5, characterized in that, The sealing structure includes a sealing gasket, which is embedded in the lower plate (32) and sealed to the bottom surface of the upper plate (31). The cooling channel (4) is located within the sealing range of the sealing gasket.

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