Method for machining a thermal equalization channel of a mold

Abstract

The present application relates to the technical field of mould, particularly relates to a processing method of heat balance water channel of mould, first S-shaped grooves and second S-shaped grooves are respectively set up as mirror images through first steel plate and second steel plate, first S-shaped grooves and second S-shaped grooves form S-shaped water channel through diffusion welding of first steel plate and second steel plate, compared with traditional heat balance water channel structure, since S-shaped grooves are set up, compared with drilling, processing difficulty is small, quality requirement of steel is not high, ordinary steel can be used, and it is not necessary to plug the drilling position in later period, it is not necessary to consider that liquid leakage occurs in the plugging position in later period, and the water channel avoids pure right-angle butt joint, cooling liquid flows more smoothly, so that it has the advantages of long service life, low manufacturing cost and good heat balance performance.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a method for processing a heat balance channel in a mold. Background Technology

[0002] In the mold structure, the water channel is an important component, which is responsible for the temperature control of the mold. By circulating coolant in the water channel, excess heat inside the mold is carried out to the outside of the mold.

[0003] In the traditional mold thermal balance channel processing technology, referring to Figure 1 The process involves deep-hole drilling of the entire core steel, creating multiple crisscrossing straight water channels. The cross-section of each water channel must be circular, and the channels are connected by their intersection. The excess holes left during drilling need to be plugged. This structure results in poor water flow and can easily lead to coolant leakage.

[0004] Therefore, it is urgent to improve the processing method of the thermal balance channel of the mold so that the resulting mold balance channel has the advantages of long service life, low manufacturing cost and good thermal balance performance. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to improve the processing method of the thermal balance channel of the mold so that the resulting mold balance channel has the advantages of long service life, low manufacturing cost and good thermal balance performance.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A method for processing a heat balance channel in a mold includes the following steps:

[0008] Step 1: Process the steel plate to obtain a first rectangular parallelepiped shape, and then process the steel plate to obtain a second rectangular parallelepiped shape;

[0009] Step 2: A first S-shaped groove is made on a rectangular plane of the first steel plate, and a second S-shaped groove is made on a rectangular plane of the second steel plate. The first S-shaped groove and the second S-shaped groove are mirror images of each other.

[0010] Step 3: Weld the plane of the first S-shaped groove of the first steel plate and the plane of the second S-shaped groove of the second steel plate together to form an S-shaped water channel, which is the heat balance water channel of the mold.

[0011] Furthermore, in the above-mentioned processing method for the heat balance channel of the mold, step 3 specifically includes: fabricating a first positioning pin, the side of which matches the inlet end of the first S-shaped groove, and the side of which matches the inlet end of the second S-shaped groove; fabricating a second positioning pin, the side of which matches the outlet end of the second S-shaped groove, and the side of which matches the outlet end of the first S-shaped groove; placing the first S-shaped groove of the first steel plate facing upwards, placing the first positioning pin at the inlet end of the first S-shaped groove, and placing the second positioning pin at the outlet end of the first S-shaped groove. At the outlet end of the S-shaped groove, the side of the second S-shaped groove of the second steel plate is attached to the side of the first S-shaped groove of the first steel plate, so that the inlet end of the second S-shaped groove is attached to the side of the first positioning pin, and the outlet end of the second S-shaped groove is attached to the side of the second positioning pin. The first positioning pin and the second positioning pin are respectively separated from the first steel plate and the second steel plate. The plane of the first S-shaped groove of the first steel plate and the plane of the second S-shaped groove of the second steel plate are diffusely welded together to form an S-shaped water channel, which is the heat balance water channel of the mold.

[0012] Furthermore, in the above-mentioned processing method for the thermal balance water channel of the mold, the material of the first positioning pin and the second positioning pin is ice.

[0013] Furthermore, in the above-mentioned method for processing the thermal balance channel of the mold, the diameter of the S-shaped channel gradually increases from the inlet end to the outlet end.

[0014] Furthermore, in the above-mentioned processing method for the heat balance channel of the mold, the inlet diameter of the S-shaped channel is 10mm and the outlet diameter of the S-shaped channel is 16mm.

[0015] Furthermore, in the above-mentioned method for processing the heat balance channel of the mold, the S-shaped channel includes multiple parallel straight channels, and the spacing between adjacent straight channels gradually increases from the inlet end to the outlet end of the S-shaped channel.

[0016] Furthermore, in the above-mentioned method for processing the heat balance channel of the mold, the S-shaped channel is composed of multiple straight lines and multiple bends, with each bend having an angle of 90 degrees.

[0017] Furthermore, in the above-mentioned method for processing the heat balance channel of the mold, the number of bends is 8.

[0018] Furthermore, in the above-mentioned method for processing the thermal balance channel of the mold, the inlet end and outlet end of the S-shaped channel coincide on the same axis.

[0019] Furthermore, in the above-mentioned method for processing the heat balance channel of the mold, the diameter difference between adjacent straight channels from the inlet end to the outlet end is 2mm.

[0020] The beneficial effects of this invention are as follows: by opening a first S-shaped groove and a second S-shaped groove that are mirror images of each other on the first steel plate and the second steel plate respectively, and by diffusion welding of the first steel plate and the second steel plate, the first S-shaped groove and the second S-shaped groove form an S-shaped water channel. Compared with the traditional heat balance water channel structure, this structure is easier to process than drilling holes, does not have high requirements for the quality of steel, and can use ordinary steel. It also eliminates the need to plug the drilled hole in the later stage, and there is no need to worry about leakage caused by plugging the hole in the later stage. In addition, the water channel avoids pure right angle docking, and the coolant flows more smoothly. Therefore, it has the advantages of long service life, low manufacturing cost and good heat balance performance.

[0021] Furthermore, before welding the first and second steel plates, the inlet and outlet ends of the waterway can be positioned by using the first and second positioning pins made of ice material, respectively, so that the alignment of the first S-shaped groove and the second S-shaped groove is more accurate and the smoothness of the inner wall of the waterway is guaranteed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the thermal balance water channel structure of a mold in the prior art.

[0023] Figure 2 An exploded view of a heat balance water channel structure of a mold according to a specific embodiment of the present invention;

[0024] Figure 3 An exploded view of a heat balance water channel structure of a mold for a specific embodiment of the invention;

[0025] Figure 4 A schematic diagram of the thermal balance water channel of a mold according to a specific embodiment of the invention;

[0026] Figure 5 A top view of the heat balance water channel of a mold according to a specific embodiment of the invention;

[0027] Label Explanation:

[0028] 1. First steel plate; 11. First S-shaped groove;

[0029] 2. Second steel plate; 21. Second S-shaped groove;

[0030] 3. S-shaped waterway; 31. Inlet end; 32. Outlet end. Detailed Implementation

[0031] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] Embodiment 1 of the present invention is as follows:

[0033] A method for processing a heat balance channel in a mold includes the following steps:

[0034] Step 1: Process the steel plate to obtain a first rectangular parallelepiped shape, and then process the steel plate to obtain a second rectangular parallelepiped shape;

[0035] Step 2: A first S-shaped groove is made on a rectangular plane of the first steel plate, and a second S-shaped groove is made on a rectangular plane of the second steel plate. The first S-shaped groove and the second S-shaped groove are mirror images of each other.

[0036] Step 3: Fabricate a first locating pin, the side of which matches the inlet end of the first S-shaped groove, and the side of which matches the inlet end of the second S-shaped groove; fabricate a second locating pin, the side of which matches the outlet end of the second S-shaped groove, and the side of which matches the outlet end of the first S-shaped groove; place the first S-shaped groove of the first steel plate facing upwards, place the first locating pin at the inlet end of the first S-shaped groove, place the second locating pin at the outlet end of the first S-shaped groove, and place the side of the second steel plate with the second S-shaped groove on the side of the first steel plate with the first S-shaped groove, so that the inlet end of the second S-shaped groove is aligned with the side of the first locating pin, and so that the second S-shaped groove... The side of the second positioning pin is attached to the outlet end. The first positioning pin and the second positioning pin are respectively separated from the first steel plate and the second steel plate. The plane where the first S-shaped groove of the first steel plate is located and the plane where the second S-shaped groove of the second steel plate is located are diffusely welded together to form an S-shaped water channel. The S-shaped water channel is the heat balance water channel of the mold. The material of the first positioning pin and the second positioning pin is ice. Specifically, water can be poured into the mold by designing the mold with the required shape of the first positioning pin and the second positioning pin. After cooling and freezing, the mold is demolded and used as a temporary limiting mold for the alignment of the first steel plate and the second steel plate. After the alignment is completed, the first positioning pin and the second positioning pin do not need to be removed. The first positioning pin and the second positioning pin will automatically dissolve into water.

[0037] In the above scheme, a first S-shaped groove and a second S-shaped groove that are mirror images of each other are respectively opened on the first steel plate and the second steel plate. Through diffusion welding of the first steel plate and the second steel plate, the first S-shaped groove and the second S-shaped groove form an S-shaped water channel. Compared with the traditional heat balance water channel structure, this structure is easier to process than drilling holes, has lower requirements for the quality of steel, can use ordinary steel, and does not require the drilling part to be plugged later, so there is no need to worry about leakage due to the plugging part. In addition, the water channel avoids pure right angle docking, and the coolant flows more smoothly. Therefore, it has the advantages of long service life, low manufacturing cost and good heat balance performance.

[0038] Before welding the first and second steel plates, the inlet and outlet ends of the waterway can be positioned by using the first and second positioning pins made of ice material, respectively, so that the alignment of the first S-shaped groove and the second S-shaped groove is more accurate and the smoothness of the inner wall of the waterway is guaranteed.

[0039] Please refer to Figures 2-5 Embodiment two of the present invention is as follows:

[0040] The thermal balance channel structure of the mold obtained by this invention includes a first steel plate 1 and a second steel plate 2. One side of the first steel plate 1 has a first S-shaped groove 11, with its two ends located on opposite sides of the first steel plate 1. One side of the second steel plate 2 has a second S-shaped groove 21, which is a mirror image of the first S-shaped groove 11. The side of the first steel plate 1 containing the first S-shaped groove 11 and the side of the second steel plate 2 containing the second S-shaped groove 21 are integrally welded together, forming an S-shaped channel 3. The S-shaped channel 3 has a circular cross-section and includes an inlet end 31 and an outlet end 32. The diameter of the inlet end 31 of the S-shaped channel 3 is smaller than the diameter of the outlet end 32. The diameter of the S-shaped channel 3 gradually increases from the inlet end 31 to the outlet end 32. The diameter of the inlet end 31 of the S-shaped channel 3 is 10 mm. The outlet end 32 of the S-shaped waterway 3 has a diameter of 16 mm. The S-shaped waterway 3 comprises multiple parallel straight waterways, with the spacing between adjacent straight waterways gradually increasing from the inlet end 31 to the outlet end 32. The S-shaped waterway 3 is formed by connecting multiple straight lines and multiple bends, each bend being 90 degrees. There are eight bends. The axes of the inlet end 31 and the outlet end 32 of the S-shaped waterway 3 coincide. The diameter difference between adjacent straight waterways from the inlet end 31 to the outlet end 32 is 2 mm.

Claims

1. A method for processing the thermal balance water channel of a mold, characterized in that, Includes the following steps: Step 1: Process the steel plate to obtain a first rectangular parallelepiped shape, and then process the steel plate to obtain a second rectangular parallelepiped shape; Step 2: A first S-shaped groove is made on a rectangular plane of the first steel plate, and a second S-shaped groove is made on a rectangular plane of the second steel plate. The first S-shaped groove and the second S-shaped groove are mirror images of each other. Step 3: Weld the plane of the first S-shaped groove on the first steel plate and the plane of the second S-shaped groove on the second steel plate together to form an S-shaped water channel, which is the mold heat balance water channel. Step 3 specifically involves: fabricating a first positioning pin, the side of which matches the inlet end of the first S-shaped groove, and the side of which matches the inlet end of the second S-shaped groove; fabricating a second positioning pin, the side of which matches the outlet end of the first S-shaped groove, and the side of which matches the outlet end of the second S-shaped groove; placing the first S-shaped groove of the first steel plate facing upwards, placing the first positioning pin at the inlet end of the first S-shaped groove, placing the second positioning pin at the outlet end of the first S-shaped groove, attaching the side of the second S-shaped groove of the second steel plate to the side of the first S-shaped groove of the first steel plate, so that the inlet end of the second S-shaped groove is attached to the side of the first positioning pin, and the outlet end of the second S-shaped groove is attached to the side of the second positioning pin; separating the first positioning pin and the second positioning pin from the first steel plate and the second steel plate respectively; and performing diffusion welding on the plane of the first S-shaped groove of the first steel plate and the plane of the second S-shaped groove of the second steel plate to form an S-shaped channel, which is the heat balance channel of the mold. The first and second positioning pins are both made of ice.

2. The method for processing the thermal balance water channel of the mold according to claim 1, characterized in that, The diameter of the S-shaped waterway gradually increases from the inlet to the outlet.

3. The method for processing the thermal balance water channel of the mold according to claim 2, characterized in that, The inlet diameter of the S-shaped waterway is 10mm, and the outlet diameter of the S-shaped waterway is 16mm.

4. The method for processing the thermal balance water channel of the mold according to claim 1, characterized in that, The S-shaped waterway comprises multiple parallel straight waterways, and the distance between adjacent straight waterways gradually increases from the inlet end to the outlet end.

5. The method for processing the thermal balance water channel of the mold according to claim 1, characterized in that, The S-shaped waterway is composed of multiple straight lines and multiple bends, with each bend having an angle of 90 degrees.

6. The method for processing the thermal balance water channel of the mold according to claim 5, characterized in that, The number of bends is 8.

7. The method for processing the thermal balance water channel of the mold according to claim 1, characterized in that, The inlet and outlet axes of the S-shaped waterway coincide.

8. The method for processing the thermal balance water channel of the mold according to claim 4, characterized in that, The diameter difference between adjacent straight waterways from the inlet to the outlet is 2 mm.

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