Combined die for producing large-specification silver-copper alloy strip blank

Abstract

The utility model relates to the technical field of silver-copper alloy strip billet production, in particular to a combined die for large-specification silver-copper alloy strip billet production, which comprises a divergent die and a forming die which are arranged in an extruder cavity, the divergent die is arranged at the outlet end of an extrusion cavity of an extruder, and the forming die is positioned on one side, far away from the outlet end of the extrusion cavity of the extruder, of the divergent die. An expansion cavity is formed in the divergent die, and a sizing belt is arranged on the forming die. The internal structure of a strip blank produced by an existing mold is not compact enough, and product strength and stability are affected. According to the utility model, the trapezoidal shunting block of the shunting die is matched with the shunting groove and the sizing belt of the forming die, so that alloy raw materials flow in the die more smoothly and are uniformly distributed. In the uniform flowing and distribution process, the alloy raw materials can be more tightly combined together, so that the compactness of the internal structure of the strip blank is improved, the strength and stability of the product are enhanced, the product quality can meet the standard requirement more easily, the production cost is reduced, smooth production is guaranteed, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of silver-copper alloy strip production technology, specifically a combined mold for the production of large-size silver-copper alloy strips. Background Technology

[0002] Silver-copper alloy strips are used in equipment such as circuit boards and wire-pressed components. During the production of silver-copper alloy strips, especially in the processing of large-size products, the design of the mold plays a decisive role in product quality. Currently, the widely used continuous extrusion process uses top-drawn copper rods as raw materials. In the production process, the top-drawn copper rod, under the synergistic action of the extrusion rollers and compaction rollers of the extrusion press, enters the die cavity along the grooves of the extrusion rollers. It then expands in the expansion cavity of the die cavity, and after processing by a C-shaped plate and forming die, it finally becomes the desired product.

[0003] However, existing extrusion dies have a triangular structure at the center and a flat structure at the edges. When this design is used to produce silver-copper alloy strip blanks with a width exceeding a certain specification, the products are prone to edge cracking, affecting the appearance and performance of the products. It also results in the strip blank having an insufficiently dense internal structure, reducing the product's strength and stability, making it difficult for the product quality to meet the standard requirements, thereby increasing production costs, hindering the smooth progress of production, and reducing production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a combined mold for the production of large-size silver-copper alloy strip blanks, which solves the problems mentioned in the background art, such as the tendency of products to crack at the edges and the insufficient density of the internal structure of the strip blank.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined mold for producing large-size silver-copper alloy strip blanks, comprising a diversion mold and a forming mold disposed in the extrusion chamber, wherein the diversion mold is disposed at the outlet end of the extrusion chamber of the extrusion machine, and the forming mold is located on the side of the diversion mold away from the outlet end of the extrusion chamber of the extrusion machine, the diversion mold having an expansion cavity, and the forming mold having a sizing strip.

[0006] Furthermore, the flow divider consists of two identical and symmetrically distributed C-shaped plates.

[0007] Furthermore, the C-shaped plate is provided with a trapezoidal diverter block, which is located in the middle of the expansion cavity.

[0008] Furthermore, the forming mold has a flow divider groove, which is connected to the sizing belt and located on the side close to the flow divider mold.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. Solving the edge cracking problem: Existing molds have a triangular structure at the center and a straight structure at the edges, which easily leads to edge cracking when producing large-size silver-copper alloy strip blanks. In this utility model, the expansion cavity of the flow divider and the flow divider groove of the forming mold are both designed with a figure-eight shape. This structure helps the alloy raw material to flow and distribute more evenly. During the flow process, the stress on the alloy raw material is more uniform, avoiding stress concentration at the edge of the strip blank, thereby effectively reducing edge cracking and improving the product's appearance and performance.

[0011] 2. Improved internal density of the strip blank: The internal structure of strip blanks produced by existing molds is not dense enough, affecting the strength and stability of the product. In this invention, the trapezoidal flow divider block of the flow divider mold and the flow divider groove and sizing band of the forming mold work together to make the alloy raw material flow more smoothly and be distributed more evenly within the mold. During this uniform flow and distribution process, the alloy raw material can be more tightly bonded together, thereby improving the density of the internal structure of the strip blank, enhancing the strength and stability of the product, making it easier for the product quality to meet standard requirements, reducing production costs, ensuring smooth production, and improving production efficiency. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present invention;

[0013] Figure 2 This is a structural diagram of the flow divider of this utility model;

[0014] Figure 3 This is a bottom view of the flow divider of this utility model;

[0015] Figure 4 This is a structural diagram of the molding die of this utility model;

[0016] Figure 5 This is a bottom view of the molding die of this utility model;

[0017] Figure 6 This is a structural diagram of the C-shaped plate of this utility model.

[0018] In the picture:

[0019] 1. Diverter mold; 2. Forming mold; 3. Expansion cavity; 4. Sizing belt; 5. C-shaped plate; 6. Diverter block; 7. Diverter groove. Detailed Implementation

[0020] Please see Figures 1 to 4 A combined die for producing large-size silver-copper alloy strip blanks comprises a flow divider die 1 and a forming die 2. Both the flow divider die 1 and the forming die 2 are installed within the extrusion chamber, with the flow divider die 1 located at the outlet end of the extrusion chamber, and the forming die 2 located on the side of the flow divider die 1 away from the outlet end of the extrusion chamber. The flow divider die 1 consists of two identical and symmetrically distributed C-shaped plates 5 (e.g., ...). Figure 2As shown, both C-shaped plates 5 have expansion cavities 3, and trapezoidal flow dividers 6 are provided on the C-shaped plates 5. The flow dividers 6 are located in the middle of the expansion cavities 3, so that the expansion cavities 3 form a figure-eight flow path. A flow divider groove 7 is provided on the side of the forming mold 2 near the flow divider mold 1. The flow divider groove 7 is also in the figure-eight shape. A sizing band 4 is provided on the other side. The flow divider groove 7 is connected to the sizing band 4.

[0021] Working principle of this utility model:

[0022] 1. Alloy Raw Material Enters the Die-Dividing Die: In the production process of silver-copper alloy strip billets, the upper copper rod is used as raw material. Under the synergistic action of the extrusion rollers and compaction rollers of the extrusion press, the raw material enters the extrusion chamber of the extrusion press along the grooves of the extrusion rollers. Subsequently, the raw material enters the die-dividing die 1 from the outlet end of the extrusion chamber. Since the die-dividing die 1 consists of two identical and symmetrically distributed C-shaped plates 5, and the C-shaped plates 5 are provided with trapezoidal diverting blocks 6 located in the middle of the expansion cavity 3, the expansion cavity 3 forms a figure-eight flow path. This structure allows the alloy raw material entering the expansion cavity 3 to be evenly diverted to both sides, preparing for subsequent forming.

[0023] 2. Raw material processing in the forming mold: After being diverted by the diversion mold 1, the alloy raw material enters the forming mold 2. A figure-eight shaped diversion groove 7 is provided on the side of the forming mold 2 closest to the diversion mold 1, further distributing the alloy raw material evenly after it enters the diversion groove 7. Next, the raw material passes through a sizing belt 4 connected to the diversion groove 7. The sizing belt 4 performs final shaping and dimensional determination on the alloy raw material, transforming it into a large-size silver-copper alloy strip blank that meets the specifications. It is then output from the end of the forming mold 2 furthest from the diversion mold 1.

Claims

1. A combined die for producing large-size silver-copper alloy strip billets, comprising a diversion die (1) and a forming die (2) disposed within the extrusion chamber of an extruder, wherein the diversion die (1) is located at the outlet end of the extrusion chamber of the extruder, and the forming die (2) is located on the side of the diversion die (1) away from the outlet end of the extrusion chamber of the extruder, characterized in that, The flow divider (1) has an expansion cavity (3), and the forming mold (2) has a sizing band (4).

2. The mold of claim 1, wherein, The flow divider (1) consists of two identical and symmetrically distributed C-shaped plates (5).

3. The mold of claim 2, wherein, The C-shaped plate (5) is provided with a trapezoidal diverter block (6), which is located in the middle of the expansion cavity (3).

4. The mold of claim 1, wherein, The forming mold (2) has a flow divider (7) which is connected to the sizing belt (4) and is located on the side close to the flow divider (1).

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