Diffusion welding die

Abstract

The utility model discloses a diffusion welding die which comprises a die body, a plurality of cooling water channels are arranged in the die body, and a plurality of sections of cooling water channel units which are located on different plane layers and communicated with one another are arranged in each cooling water channel. The die body is horizontally divided into a plurality of unit plates according to the distribution structure of the cooling water channel units, water grooves forming the cooling water channel units are formed in the upper surfaces or the lower surfaces of the unit plates, and the unit plates are connected in a diffusion welding mode. According to the diffusion welding die provided by the utility model, the cooling water path can be specifically designed according to the cooling requirements of different parts of a die product, and the complex cooling water path is machined in a diffusion welding manufacturing mode.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, in particular to a diffusion welding mold. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In short, molds are tools used to shape objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of objects by changing the physical state of the molded material, and is known as the "mother of industry".

[0003] At present, in the design of injection molds, the manufacturing of most mold cooling channels is still completed by drilling and plugging methods. However, for special-shaped and complex product structures, the cooling channels cannot be designed arbitrarily, and the cooling effect is not good. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides a diffusion welding mold, which can design cooling water channels specifically according to the cooling requirements of different parts of the mold product, and complete the processing of complex cooling water channels through the diffusion welding manufacturing method.

[0005] The utility model is realized through the following technical solutions:

[0006] A diffusion welding mold comprises a mold body, wherein the mold body is provided with a plurality of cooling water channels, wherein a single cooling water channel comprises a plurality of cooling water channel units located in different plane layers and interconnected with each other; the mold body is horizontally divided into a plurality of unit plates according to the distribution structure of the cooling water channel units, wherein the upper surface or the lower surface of the unit plate is provided with a water groove constituting the cooling water channel units, and the plurality of unit plates are connected by diffusion welding; in the technical scheme, the mold body is firstly designed in layers according to the complex distribution of the cooling water channels inside, and the mold body is divided into a plurality of unit plates, and the C NC processes the corresponding structure of the cooling water channel on each layer of unit plate, then stacks the processed layers of unit plates in the designed order, and uses diffusion welding to connect them into the final parts. It can carry out targeted design according to the cooling needs of different parts of the mold product to complete the processing of complex cooling water channels of the mold, and the product processing efficiency and quality are high; among them, diffusion welding is a solid-state connection method, which makes the surface to be welded undergo slight plastic deformation under a certain temperature and pressure to achieve close contact over a large area, and after a certain period of heat preservation, the metallurgical bonding of the parts is achieved through the mutual diffusion of atoms between the contact surfaces and interface migration.

[0007] Preferably, the cooling water channel includes a first cooling water channel and a second cooling water channel; the first cooling water channel includes a first water inlet channel unit, a first intermediate channel unit and a first water outlet channel unit which are interconnected in sequence, and the first intermediate channel unit is located above the first water inlet channel unit and the first water outlet channel unit; the second cooling water channel includes a second water inlet channel unit, a second intermediate channel unit and a second water outlet channel unit which are interconnected in sequence, and the second intermediate channel unit is located below the second water inlet channel unit and the second water outlet channel unit; in the present technical solution, the cooling water channel includes a first cooling water channel and a second cooling water channel, and the first intermediate channel unit and the second intermediate channel unit which serve as the main heat dissipation sections are distributed at the upper and lower ends of the mold body, close to the outer surface of the mold body, and heat exchange can be performed simultaneously at the upper and lower ends of the mold body, which can more efficiently and evenly take away the temperature of the mold body, achieve better cooling effect, and improve the casting quality of the product; the first water inlet channel unit, the first water outlet channel unit, the second water inlet channel unit and the second water outlet channel unit are mainly used to connect with external pipelines.

[0008] Preferably, the unit plate includes an upper unit plate, a middle unit plate and a lower unit plate arranged in sequence from top to bottom, the upper surface of the middle unit plate is provided with a first water tank, and the lower surface is provided with a second water tank; the first water inlet channel unit and the first water outlet channel unit are located at both ends of the middle unit plate and are connected to the first water tank, the second water inlet channel unit and the second water outlet channel unit are located at both ends of the middle unit plate and are connected to the second water tank; the lower surface of the upper unit plate is provided with a third water tank, and the third water tank and the first water tank are combined into a first intermediate channel unit; the upper surface of the lower unit plate A fourth water trough is provided, and the fourth water trough and the second water trough are combined into a second intermediate channel unit; in the present technical solution, the unit plate is divided into an upper unit plate, a middle unit plate and a lower unit plate according to the water channel distribution of the first cooling water channel and the second cooling water channel, which can facilitate the processing of the first intermediate channel unit and the second intermediate channel unit; the first water inlet channel unit and the first water outlet channel unit are located at both ends of the middle unit plate to ensure the integrity of the processing of the connecting pipe section, improve the structural strength of the connecting part, and ensure the reliability of the connecting pipe section during the connection with the external pipeline.

[0009] Preferably, a shaping groove is provided on the mold body, and the first intermediate channel unit or the second intermediate channel unit is provided with a bending portion adapted to the shaping groove; in the present technical solution, the bending portion can fit the structural characteristics of the shaping processing surface to quickly and evenly cool down key parts to improve the processing quality.

[0010] Preferably, the cross-section of the water trough is a semicircular structure; in the present technical solution, the cross-section of the water trough is a semicircular structure. Compared with the directional groove, it can reduce the processing difficulty and improve the processing efficiency on the one hand, and eliminate the stress concentration phenomenon and improve the structural strength of the mold body on the other hand, and can reduce the fluid friction resistance, reduce the pipeline energy loss, and increase the flow rate.

[0011] Preferably, the cooling water channel units are connected via a transition channel arranged along the vertical direction; in the present technical solution, the transition channel is arranged along the vertical direction, which can reduce the processing difficulty and improve the processing efficiency.

[0012] The beneficial effects of the utility model are: 1. The cooling water channel of the mold fits the structural characteristics of the shaping processing surface, which can quickly and evenly cool down the key parts to improve the processing quality; 2. The mold can be designed in layers according to the distribution of the internal cooling water channels, and the mold body is divided into several layers of unit plates. The corresponding structure of the cooling water channel on each layer of unit plate is processed by CNC, and then the processed layers of unit plates are stacked in the design order, and connected to form the final parts by diffusion welding, which simplifies the processing form of the cooling water channel and reduces the processing difficulty; 3. The mold uses diffusion welding to connect the layers of unit plates into the final part, with small welding deformation and high product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of a diffusion welding mold described in Example 1;

[0014] Figure 2 is a schematic diagram of the direction of the first cooling water channel in Example 1;

[0015] Figure 3 This is a schematic diagram of the direction of the second cooling water channel in Example 1;

[0016] Figure 4 This is a schematic diagram of the first water tank on the middle unit plate in Example 1;

[0017] Figure 5 This is a schematic diagram of the second water tank on the middle unit plate described in Example 1;

[0018] Figure 6 A schematic diagram of the third water tank on the upper unit plate in the first embodiment;

[0019] Figure 7 A schematic diagram of the fourth water tank on the lower unit plate in the first embodiment;

[0020] In the figure: 1. upper unit plate; 11. third water trough; 2. middle unit plate; 21. first water trough; 22. second water trough; 3. lower unit plate; 31. fourth water trough; 4. first cooling water channel; 41. first water inlet channel unit; 42. first intermediate channel unit; 43. first water outlet channel unit; 5. second cooling water channel; 51. second water inlet channel unit; 52. second intermediate channel unit; 53. second water outlet channel unit; 6. transition channel; 7. shaping groove; 71. first shaping groove; 72. second shaping groove. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] like Figures 1 to 7As shown, a diffusion welding mold comprises a mold body, wherein the mold body is provided with a plurality of cooling water channels, wherein a single cooling water channel comprises a plurality of cooling water channel units located in different plane layers and interconnected with each other; the mold body is horizontally divided into a plurality of unit plates according to the distribution structure of the cooling water channel units, wherein the upper surface or the lower surface of the unit plate is provided with a water groove constituting the cooling water channel unit, and a plurality of the unit plates are connected by diffusion welding; specifically, the cooling water channel comprises a first cooling water channel 4 and a second cooling water channel 5; the first cooling water channel 4 comprises a first water inlet channel unit 41, a first intermediate channel unit 42 and a first water outlet channel unit 43 which are sequentially interconnected, and the The first intermediate channel unit 42 is located above the first water inlet channel unit 41 and the first water outlet channel unit 43; the second cooling water channel 5 includes a second water inlet channel unit 51, a second intermediate channel unit 52 and a second water outlet channel unit 53 which are connected in sequence, and the second intermediate channel unit 52 is located below the second water inlet channel unit 51 and the second water outlet channel unit 53. The first intermediate channel unit 42 and the second intermediate channel unit 52, which serve as the main heat dissipation sections, are distributed at the upper and lower ends of the mold body, close to the outer surface of the mold body, and can simultaneously perform heat exchange at the upper and lower ends of the mold body, which can more efficiently and evenly remove the temperature of the mold body, achieve better cooling effect, and improve the casting quality of the product; the first A water inlet channel unit 41, a first water outlet channel unit 43, a second water inlet channel unit 51 and a second water outlet channel unit 53 are mainly used to connect with external pipelines; the unit plate includes an upper unit plate 1, a middle unit plate 2 and a lower unit plate 3 arranged from top to bottom, the upper surface of the middle unit plate 2 is provided with a first water tank 21, and the lower surface is provided with a second water tank 22; the first water inlet channel unit 41 and the first water outlet channel unit 43 are located at both ends of the middle unit plate 2 and are connected to the first water tank 21, the second water inlet channel unit 51 and the second water outlet channel unit 53 are located at both ends of the middle unit plate 2 and are connected to the second water tank 22; the lower surface of the upper unit plate 1 is provided with a third water tank 11, and the third water tank 11 is connected to the lower surface of the upper unit plate 1. The first water trough 21 is combined into a first intermediate channel unit 42; a fourth water trough 31 is provided on the upper surface of the lower unit plate 3, and the fourth water trough 31 and the second water trough 22 are combined into a second intermediate channel unit 52; the mold body is divided into an upper unit plate 1, a middle unit plate 2 and a lower unit plate 3 according to the water channel distribution of the first cooling water channel 4 and the second cooling water channel 5, so that the first intermediate channel unit 42 and the second intermediate channel unit 52 located inside the mold body can be conveniently processed; the water inlet channel unit and the water outlet channel unit of the cooling water channel are located at both ends of the middle unit plate 2 to ensure the integrity of the processing of the connecting pipe section, improve the structural strength of the connecting part, and ensure the reliability of the connecting pipe section during the connection with the external pipeline.

[0024] Preferably, the mold body is provided with a shaping groove 7, including a first shaping groove 71 and a second shaping groove 72; the first intermediate channel unit 42 is provided with a bending portion adapted to the second shaping groove 72, and the second intermediate channel unit 52 is provided with a bending portion adapted to the second shaping groove 72, and the bending portion can fit the structural characteristics of the shaping processing surface of the mold body to quickly and evenly cool down the key parts to improve the processing quality; the cross-sections of the first water trough 21, the second water trough 22, the third water trough 11 and the fourth water trough 31 are semicircular structures. Compared with the direction groove, on the one hand, it can reduce the processing difficulty and improve the processing efficiency, and on the other hand, it can eliminate the need for The force concentration phenomenon improves the structural strength of the mold body, reduces the fluid friction resistance, reduces the pipeline energy loss, and improves the flow rate; the cooling water channel units are connected through a transition channel arranged along the vertical direction, which can reduce the processing difficulty and improve the processing efficiency; the first intermediate channel unit 42 is connected with the first water inlet channel unit 41 and the first water outlet channel unit 43 through a transition channel 6 arranged along the vertical direction, and the second intermediate channel unit 52 is connected with the second water inlet channel unit 51 and the second water outlet channel unit 53 through a transition channel 6 arranged along the vertical direction. The transition channel 6 is arranged in the vertical direction, which can reduce the processing difficulty and improve the processing efficiency.

[0025] In the process of making the mold, the mold body is first designed in layers according to the complex distribution of cooling water channels inside the mold, and the mold body is divided into several layers of unit plates. The corresponding structure of the cooling water channels on each layer of unit plates is processed by CNC, and then the processed layers of unit plates are stacked in the design order and connected to form the final parts by diffusion welding. It can carry out targeted design according to the cooling needs of different parts of the mold product to complete the processing of the complex cooling water channels of the mold, and the product processing efficiency and quality are high.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A diffusion welding mold, characterized in that: The invention comprises a mould body, wherein a plurality of cooling water channels are arranged in the mould body, wherein a single cooling water channel comprises a plurality of cooling water channel units which are located in different plane layers and are interconnected; the mould body is horizontally divided into a plurality of unit plates according to the distribution structure of the cooling water channel units, wherein the upper surface or the lower surface of the unit plate is provided with a water groove constituting the cooling water channel unit, and the plurality of unit plates are connected by diffusion welding.

2. A diffusion welding mold according to claim 1, characterized in that: The cooling water channel includes a first cooling water channel and a second cooling water channel; the first cooling water channel includes a first water inlet channel unit, a first intermediate channel unit and a first water outlet channel unit which are interconnected in sequence, and the first intermediate channel unit is located above the first water inlet channel unit and the first water outlet channel unit; the second cooling water channel includes a second water inlet channel unit, a second intermediate channel unit and a second water outlet channel unit which are interconnected in sequence, and the second intermediate channel unit is located below the second water inlet channel unit and the second water outlet channel unit.

3. A diffusion welding mold according to claim 2, characterized in that: The unit plate includes an upper unit plate, a middle unit plate and a lower unit plate which are arranged in sequence from top to bottom. The upper surface of the middle unit plate is provided with a first water tank, and the lower surface is provided with a second water tank; the first water inlet channel unit and the first water outlet channel unit are located at both ends of the middle unit plate and are connected to the first water tank, and the second water inlet channel unit and the second water outlet channel unit are located at both ends of the middle unit plate and are connected to the second water tank; the lower surface of the upper unit plate is provided with a third water tank, and the third water tank is combined with the first water tank to form a first intermediate channel unit; the upper surface of the lower unit plate is provided with a fourth water tank, and the fourth water tank is combined with the second water tank to form a second intermediate channel unit.

4. A diffusion welding mold according to claim 2, characterized in that: The mold body is provided with a shaping groove, and the first intermediate channel unit or the second intermediate channel unit is provided with a bending portion adapted to the shaping groove.

5. The diffusion welding mold according to claim 1, characterized in that: The cross section of the water tank is a semicircular structure.

6. The diffusion welding mold according to claim 1, characterized in that: The cooling water channel units are connected via transition channels arranged in a vertical direction.

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