Shell drawing die with water cooling function

Abstract

The utility model relates to the technical field of stamping dies, in particular to a shell drawing die with a water cooling function, and aims to solve the problems of poor cooling effect and low production efficiency when an existing drawing die is provided with a cooling water channel for a cavity with a complicated shape. The mold comprises two main mold bases which form a mold cavity after mold closing; at least one main die holder comprises a plurality of sub-die holders, and at least one sub-die holder is provided with a water channel cavity; when the sub-die holders are combined into the main die holder, cooling water channels for cooling the main die holder are formed among the sub-die holders; one end of the cooling water channel serves as a cooling water inlet, the other end of the cooling water channel serves as a cooling water outlet, and the cooling water inlet and the cooling water outlet are connected with cooling water circulation equipment respectively and used for circulating cooling water. According to the mold, the split type sub-mold bases are adopted to form the main mold base, so that the cooling water channel can be arranged according to the shape of the cavity, the cooling effect of the cavity is kept consistent, local hot nodes cannot be caused, the cooling effect is good, the downtime can be shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, and particularly relates to a shell stretching die with a water cooling function. Background Art

[0002] Stamping processing is a production technology that relies on the power of conventional or special stamping equipment to directly deform a sheet metal in a die, thereby obtaining product parts with a certain shape, size, and performance. The sheet metal, die, and equipment are the three elements of stamping processing. Among them, the stretching die is a relatively widely used die.

[0003] After the stretching die in the prior art is used for a period of time, the temperature of the stretching die will rise due to the heat generated by the deformation of the sheet metal. If the temperature of the stretching die is not lowered in time, the temperature of the stretching die will rise and cause deformation, resulting in a decrease in the forming quality of the sheet metal and even scrapping of the die. The common method for cooling treatment of the existing stretching die is to open cooling water channels on the die and cool it through circulating cooling water. However, the existing method for opening the cooling water channels is relatively simple. By drilling holes on the outer side of the die to form multiple straight water channels arranged in parallel at intervals, since the straight water channels are not connected, it is also necessary to open connecting water channels perpendicular to the straight water channels to form interconnected cooling water channels. Due to the use of straight water channels, the shape of the cooling water channels is relatively simple, the cooling effect is poor, and it cannot effectively cool the stretching die with a complex cavity shape. There are cooling dead corners, which will cause heat nodes to appear in some cavities of the stretching die. Therefore, for a stretching die with a complex cavity, in the prior art, it is necessary to perform shutdown cooling treatment after using a certain period, resulting in low production efficiency. Therefore, a shell stretching die with a water cooling function is needed to solve the problems of poor cooling effect and low production efficiency when setting cooling water channels for the cavity with a complex shape in the existing stretching die. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a shell stretching die with a water cooling function, which can effectively solve the problems of poor cooling effect and low production efficiency when setting cooling water channels for the cavity with a complex shape in the existing stretching die.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A shell stretching die with a water cooling function includes two main die seats that form a cavity after being closed. At least one main die seat includes several sub-die seats, and at least one of the sub-die seats is provided with a water channel cavity. When the sub-die seats are combined into the main die seat, cooling water channels for cooling the main die seat are formed between them. One end of the cooling water channel is used as the cooling water inlet, and the other end is used as the cooling water outlet. The cooling water inlet and the cooling water outlet are respectively connected with a cooling water circulation device for circulating the cooling water.

[0007] Among them, the two main die bases include an upper die base and a lower die base. The upper die base is provided with a convex template and a core in the shape of a shell, and the lower die base is provided with a concave template and a cavity in the shape of a shell. When the upper die base and the lower die base are closed, a stretching cavity of the shell is formed between the cavity and the core.

[0008] Among them, the upper die base includes two sub-die bases, and the two sub-die bases are respectively provided with water channel cavities. When the two sub-die bases are combined, a cooling water channel adapted to the shape of the core is formed between them.

[0009] Among them, the two sub-die bases are welded into one body by setting a welding layer.

[0010] Among them, the lower die base is an integrally formed structure, and a plurality of first water channel cavities parallel to the core are arranged at intervals along the body of the lower die base. The plurality of first water channel cavities are interconnected with each other by setting a second water channel cavity to form a cooling water channel for cooling the lower die base.

[0011] Among them, the first water channel cavity and the second water channel cavity are arranged perpendicular to each other, and one end of the second water channel cavity far from the first water channel cavity extends to the outside of the lower die base to form an opening of the second water channel cavity, and a plug is arranged at the opening.

[0012] Among them, one end of each of the plurality of first water channel cavities extends to the outside of the lower die base to form an opening of the first water channel cavity. The plurality of first water channel cavities are arranged at intervals in the horizontal direction, and the openings of the first water channel cavities at both ends form the water inlet and outlet of the cooling water channel of the lower die base, and plugs are arranged at the openings of the first water channel cavities in the middle.

[0013] Among them, a plurality of partitions are arranged in parallel at intervals in the cooling water channel, and the partitions are arranged in a staggered manner with each other to form a continuous S-shaped cooling water channel.

[0014] Among them, a plurality of water pipe connectors are respectively connected to the cooling water inlet and the cooling water outlet for connecting to a cooling water circulation device through connecting water pipes.

[0015] Among them, internal threads are respectively provided at the cooling water inlet and the cooling water outlet, and the water pipe connectors are threadedly connected to the cooling water inlet and the cooling water outlet through external threads.

[0016] Compared with the prior art, the beneficial effects of this application are as follows:

[0017] 1. In the above technical solution, the shell stretching die with a water cooling function adopts a split sub-die base on at least one main die base, and at least one sub-die base is provided with a water channel cavity, so that when the sub-die bases are combined into the main die base, a cooling water channel of the main die base is formed on the main die base. In this application, the split sub-die bases are used to form the main die base, so as to set the cooling water channel according to the shape of the stretching die cavity, so that the cooling effects of all cavities of the stretching die are kept consistent, local thermal nodes will not be caused, the cooling effect is good, the downtime can be reduced, and the production efficiency can be improved.

[0018] 2. On the basis of the above, according to the characteristics of the main die base of the stretching die in this application, since the upper die base with a convex template has uneven wall thickness distribution of the seat body at the core position due to the existence of the core, thermal nodes are likely to appear. In this application, the upper die base adopts a split sub-die base structure, so that the cooling water channel of the upper die base can effectively cool the seat body at the core position and avoid the situation of uneven cooling. The lower die base is of a concave structure, and this application adopts the same cooling water channel setting as in the prior art to ensure the cooling effect while reducing the cost of the die.

[0019] 3. On the basis of the above, in this application, two sub-die bases are connected into one body by setting a welding layer welding method, so as to improve the overall strength of the upper die base, reduce the difficulty of the die production process, and save costs. In addition, threaded holes are provided at the cooling water inlet and outlet of the stretching die in this application to connect the cooling water pipe joints, which is convenient for installation, and the threaded connection method can also play a role in preventing water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the upper die base of the shell stretching die with a water cooling function according to this embodiment;

[0021] Figure 2 It is a schematic structural diagram of the upper sub-die base of the upper die base according to this embodiment;

[0022] Figure 3 It is a schematic structural diagram of the lower sub-die base of the upper die base according to this embodiment;

[0023] Figure 4 It is a top view of the sub-die base of the upper die base according to this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the purpose and advantages of the present utility model clearer, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically requested by the present utility model.

[0025] Please refer to Figures 1-4, the technical solution adopted in this application is shown in the figure. A shell stretching die with a water cooling function includes two main die seats that form a cavity after being closed. The two main die seats include an upper die seat 1 and a lower die seat (not shown), and the upper die seat is provided with a convex template (not shown), a core (not shown) that forms the shape of the shell, the lower die seat is provided with a concave template, and a cavity that forms the shape of the shell. When the upper die seat and the lower die seat are closed, a stretching cavity of the shell is formed between the cavity and the core. Among them, the upper die seat 1 of this embodiment includes two sub-die seats 2, and each sub-die seat is provided with a water channel cavity 3. When the two sub-die seats are combined into the main die seat, a cooling water channel for cooling the main die seat is formed between them, and the two sub-die seats are welded into one body by setting a welding layer 4. One end of the cooling water channel serves as the cooling water inlet 5, and the other end serves as the cooling water outlet 6. The cooling water inlet and the cooling water outlet are respectively connected with a cooling water circulation device for circulating the cooling water.

[0026] And the lower die seat of this embodiment is an integrally formed structure, and a plurality of first water channel cavities parallel to the core are arranged at intervals along the lower die seat body. The plurality of first water channel cavities are connected to each other through a second water channel cavity to form a cooling water channel for cooling the lower die seat. Among them, the first water channel cavity and the second water channel cavity are arranged perpendicular to each other, and one end of the second water channel cavity far from the first water channel cavity extends to the outside of the lower die seat to form an opening of the second water channel cavity, and a plug is arranged at the opening. One end of the plurality of first water channel cavities respectively extends to the outside of the lower die seat to form an opening of the first water channel cavity. The plurality of first water channel cavities are arranged at intervals in the horizontal direction, and the openings of the first water channel cavities at both ends constitute the water inlet and outlet of the cooling water channel of the lower die seat, and a plug is arranged at the opening of the middle first water channel cavity.

[0027] In addition, a plurality of partition plates 7 are arranged at intervals and in parallel in the cooling water channel of this embodiment, and the partition plates are arranged in a staggered manner with each other to form a continuous S-shaped cooling water channel. At the same time, a plurality of water pipe joints are respectively connected to the cooling water inlet and the cooling water outlet of this embodiment for connecting to the cooling water circulation device through connecting water pipes. Among them, internal threads are respectively arranged at the cooling water inlet and the cooling water outlet, and the water pipe joints are threadedly connected to the cooling water inlet and the cooling water outlet through external threads.

[0028] Working principle: When manufacturing the shell stretching die with water-cooling function in this embodiment, first, according to the shape of the shell, the core of the upper die base and the cavity of the lower die base are set to form the shell stretching cavity. When manufacturing the upper die base, according to the shape of the core, water channel cavities are respectively opened on the sub-die bases, so that when the sub-die bases are combined, a cooling water channel with a shape adapted to the shape of the core is formed. By the same principle, when manufacturing the lower die base, holes are drilled for the first water channel cavity and the second water channel cavity according to the shape of the cavity to form the cooling water channel. Then the two sub-die bases are combined by welding, and a welding layer is formed between them. Finally, threaded holes are made to form the inlet and outlet of the cooling water channel, and then water pipe joints are installed and connected to the cooling water circulation equipment.

[0029] During operation, as the production of product stretching progresses, the temperature of the stretching die will rise with production. After the cooling water circulation equipment is started, the heat of the stretching die is carried out by the cooling water and dissipated through the cooling equipment. The cooled cooling water flows back into the stretching die, and this process repeats to ensure that the temperature of the stretching die can be maintained at the normal working temperature. The operator only needs to control the circulation speed according to the cooling water temperature of the cooling water circulation equipment.

[0030] The above has described the embodiments of the present application in detail in combination with the embodiments. However, the present application is not limited to the above embodiments. For those of ordinary skill in the art in this technical field, after learning the content recorded in the present application, without departing from the principle of the present application, several equivalent transformations and substitutions can still be made, and these equivalent transformations and substitutions should also be regarded as belonging to the protection scope of the present application.

Claims

1. A shell drawing die with water cooling function, comprising two main die seats that form a cavity after being clamped; characterized in that: At least one main mold base includes a plurality of sub-mold bases, and at least one of the sub-mold bases is provided with a water channel cavity; when the sub-mold bases are combined into the main mold base, they form a cooling water channel for cooling the main mold base; one end of the cooling water channel serves as a cooling water inlet, and the other end serves as a cooling water outlet, and the cooling water inlet and the cooling water outlet are respectively connected to cooling water circulation equipment for circulating cooling water; The two main mold bases include an upper mold base and a lower mold base, and the upper mold base is provided with a convex mold base and a core forming a shell shape, and the lower mold base is provided with a concave mold base and a cavity forming a shell shape; when the upper mold base and the lower mold base are molded together, a stretching cavity of the shell is formed between the cavity and the core; The upper mold base includes two sub-mold bases, and the two sub-mold bases are respectively provided with the water channel cavity. When the two sub-mold bases are combined, a cooling water channel matching the shape of the core is formed between the two. The lower die base is an integrally formed structure, and a plurality of first water channel cavities arranged parallel to the core are spaced apart along the lower die base body; the plurality of first water channel cavities are interconnected by setting a second water channel cavity to form a cooling water channel for cooling the lower die base.

2. The shell stretching die with water cooling function according to claim 1, characterized in that: The two sub-mold seats are welded into one body by arranging a welding layer.

3. The shell stretching die with water cooling function according to claim 1, characterized in that: The first water channel cavity and the second water channel cavity are arranged perpendicular to each other, and one end of the second water channel cavity away from the first water channel cavity extends to the outside of the lower mold base to form an opening of the second water channel cavity, and a plug is arranged at the opening.

4. The shell stretching die with water cooling function according to claim 3, characterized in that: One end of several of the first water channel cavities respectively extends to the outside of the lower mold base to form the opening of the first water channel cavity; several of the first water channel cavities are arranged at intervals in the horizontal direction, and the openings of the first water channel cavities at both ends constitute the water inlet and outlet of the cooling water channel of the lower mold base, and a plug is provided at the opening of the middle first water channel cavity.

5. The shell stretching die with water cooling function according to claim 1, characterized in that: A plurality of partitions are arranged in parallel at intervals in the cooling water channel, and the partitions are arranged in a staggered manner to form a continuous S-shaped cooling water channel.

6. The shell stretching die with water cooling function according to claim 1, characterized in that: The cooling water inlet and the cooling water outlet are respectively connected with a plurality of water pipe joints for connecting with cooling water circulation equipment through connecting water pipes.

7. The shell stretching die with water cooling function according to claim 6, characterized in that: The cooling water inlet and the cooling water outlet are respectively provided with internal threads, and the water pipe joint is installed at the cooling water inlet and the cooling water outlet through external threads and internal threads.

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