Metal wire extrusion die

Abstract

The utility model relates to a metal wire extrusion die which comprises an ejector block, a material pressing device and a wire discharging device, the ejector block is arranged on one side of the material pressing device, the wire discharging device is arranged on the other side of the material pressing device, an extrusion channel is arranged on the material pressing device, and the extrusion channel, the ejector block and the wire discharging device are coaxially arranged. The jacking block comprises a jacking part, a connecting part and a plurality of positioning strips, the radial size of the jacking part is smaller than that of the extrusion channel, the connecting part is fixedly arranged at the end, away from the extrusion channel, of the jacking part, the positioning strips are evenly arranged on the side wall of the connecting part at intervals, and the positioning strips are in sliding fit with the extrusion channel when the jacking block moves in the extrusion channel. After the scheme is adopted, the cast ingot can be peeled when the extrusion wire is produced, so that a thicker oxidation film and impurities on the surface of the cast ingot are cleaned, and the production quality and the production efficiency of the extrusion wire are improved. And meanwhile, the die can realize continuous extrusion of the wire, so that the length of the wire is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal wire processing technology, and in particular to a metal wire extrusion die. Background Technology

[0002] Hot extrusion is a commonly used method in the processing of metal wires. Hot extrusion involves heating and softening a pre-melted metal ingot, then placing it into the pressure cylinder of an extrusion device. Pressure is applied to one end of the ingot, forcing it through a die orifice of a specific shape to achieve plastic deformation, thereby producing extruded wires of different diameters. This method is very commonly used in the production of brazing materials such as welding wire.

[0003] In actual production, a thick oxide film forms on the surface of the molten brazing alloy as it cools into an ingot. At the same time, some impurities tend to accumulate on the surface of the ingot. If the ingot containing the oxide film and impurities is directly made into wire by hot extrusion, the oxide film and impurities on the surface will be squeezed into the wire, which will cause breakage during the subsequent fiber production process and seriously affect the brazing metallographic structure, processing and brazing performance. Even if it can be processed into a product, it will lead to poor welding and leakage during the subsequent welding process, which will seriously affect the welding quality.

[0004] To remove oxides and impurities from the surface of ingots, the produced ingots are usually polished and sawn to remove surface oxides and impurities. However, this method not only requires extra manpower and material resources, but it is also difficult to clean thick oxide films or deep impurities, and cannot achieve good treatment results. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a metal wire extrusion die that can peel off the ingot during the production of extruded wire, thereby cleaning up the thick oxide film and impurities on the surface of the ingot, so as to improve the production quality and efficiency of extruded wire.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0007] A metal wire extrusion die includes a top block, a pressing device, and a wire extrusion device. The top block is disposed on one side of the pressing device, and the wire extrusion device is disposed on the other side of the pressing device. The pressing device is provided with an extrusion channel. The extrusion channel, the top block, and the wire extrusion device are coaxially arranged. The top block includes a clamping part, a connecting part, and multiple positioning strips. The radial dimension of the clamping part is smaller than the radial dimension of the extrusion channel. The connecting part is fixedly disposed at the end of the clamping part away from the extrusion channel. The multiple positioning strips are evenly spaced on the side wall of the connecting part. When the top block moves in the extrusion channel, the positioning strips slide in cooperation with the extrusion channel.

[0008] In this mold, the end of the top block furthest from the pressure device is connected to the extrusion press rod. The wire exit device is installed at the head of the extrusion press, and the pressure device is installed between the top block and the wire exit device. The pressure device achieves contact and separation with the wire exit device through a hydraulic transmission device. During the extrusion wire production process, the ingot is placed into the extrusion channel. The wire exit device is in contact with the pressure device under the action of the transmission device. The top block moves towards the extrusion channel under the action of the extrusion press rod to extrude the ingot into wire. Because the top block is designed to include multiple parts, including a clamping part, a connecting part, and a positioning strip, the radial dimension of the clamping part, as the contact part with the ingot, is about 0.5 mm smaller than the radial dimension of the extrusion channel. Thus, when the clamping part extrudes the ingot, the outer 0.5 mm of the ingot will not be subjected to force. During the extrusion process, under the action of the reaction force of the outer ring at the head end of the ingot and the extrusion force of the inner ring at the tail end of the ingot, the oxides and impurities on the outer ring of the ingot will peel off backward and cover the top block to form an extrusion skin, thus achieving the effect of ingot extrusion peeling. This method of peeling the surface of ingots can quickly and effectively remove oxide films and impurities, thereby improving the production quality and efficiency of extruded wires. Because the size of the top clamping part is smaller than the size of the extrusion channel, the pressure applied to the ingot during extrusion is prone to unevenness. The positioning strip can contact the extrusion channel during extrusion, ensuring that the top block applies pressure evenly to the ingot, thus guaranteeing the peeling effect.

[0009] Furthermore, the wire extrusion device includes an extrusion die and an extrusion die base. The extrusion die is fixed at one end of the extrusion die base near the extrusion channel. The extrusion die includes a fixing part and an extrusion part. The fixing part has a mounting groove at one end near the extrusion channel, and the extrusion part is fixedly installed in the mounting groove. The extrusion part has multiple wire pressing holes spaced circumferentially, and the fixing part has multiple wire extrusion holes spaced circumferentially. The wire pressing holes and wire extrusion holes are correspondingly arranged. During the extrusion process, the wire extrusion device will be subjected to a large pressure. By designing the wire extrusion device as two separable parts, such as the extrusion die and the extrusion die base, the die manufacturing process only requires the use of high-strength metal materials on the extrusion die and ordinary metal materials on the extrusion die base. This can save on die manufacturing costs while meeting the structural strength requirements of the wire extrusion die. The circumferentially spaced wire extrusion holes and wire pressing holes ensure the uniform distribution of the wire during the wire extrusion process, avoid the tangling of the wires, and further improve the wire extrusion quality and efficiency.

[0010] Preferably, the length of the mounting groove is greater than the length of the extrusion section, thus forming a pressure residue cavity between the top of the extrusion section and the top of the fixing section. A cutter is provided above the pressing device and the wire extrusion device. When the top block moves to the end near the wire extrusion device, the cutter is used to separate the top block covered with the oxide film of the ingot from the remaining ingot material. The presence of the pressure residue cavity ensures that when the top block separates from the remaining ingot material, a portion of the ingot material that has not yet been extruded into wire is retained in the pressure residue cavity. Thus, when extruding the next ingot, the remaining ingot material in the pressure residue cavity continues to be extruded into wire along with the new ingot under the action of the top block, thereby achieving continuous wire extrusion and improving the production efficiency of extruded wire.

[0011] Preferably, the pressing device includes a pressing cylinder and a support cylinder. The pressing cylinder is fixedly mounted on the inner wall of the support cylinder, and the extrusion channel is located on the pressing cylinder and coaxially arranged with it. During the wire production process, the ingot moves in the extrusion channel under the action of the top block, and the inner wall of the extrusion channel will bear considerable pressure. By designing the pressing device into two parts, a pressing cylinder and a support cylinder, with the pressing cylinder using a metal with high structural strength and the support cylinder using ordinary metal, not only can its structural strength be improved, but the manufacturing cost of the mold can also be reduced.

[0012] Preferably, the end of the extrusion section away from the extrusion channel is provided with a mounting hole, and a positioning bolt is provided on the fixing section, which is fixedly installed in the mounting hole. The extrusion section is designed as a detachable component, which facilitates the replacement of extrusion sections with different wire pressing hole diameters, thereby enabling the production of wires with different wire diameters. The positioning bolt and mounting hole, as a stable and convenient fixing method, can effectively prevent relative movement or loosening between the extrusion section and the fixing section, ensuring the stability and reliability of the entire structure.

[0013] Preferably, the fixing part is provided with a demolding hole, which is parallel to the wire ejection hole. The presence of the demolding hole facilitates the replacement of the extrusion part. The extrusion part can be directly ejected through the demolding hole, making it easier to remove from the mold, reducing resistance during demolding, and avoiding product damage or mold wear caused by demolding difficulties.

[0014] Preferably, both ends of the support cylinder are provided with lifting grooves, and the extrusion die base is provided with lifting protrusions. Because the die is made of high-density metal and has a large volume and weight, the pressing device and wire extrusion device are installed on the extruder by lifting. The design of the lifting grooves and lifting protrusions facilitates their lifting, thereby ensuring that the die does not shake during operation.

[0015] Preferably, the end of the extrusion channel near the top block is provided with an inclined section, and the radial dimension of the end of the inclined section away from the extrusion channel is larger than the radial dimension of the extrusion channel. The design of the inclined section facilitates the smooth entry of the ingot into the extrusion channel, avoiding work-related injuries caused by the ingot getting stuck at the inlet and continuing to be extruded.

[0016] In summary, this metal wire extrusion die can peel off the ingot during the production of extruded wire, thereby cleaning up the thick oxide film and impurities on the surface of the ingot, improving the production quality and efficiency of extruded wire. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the wire feeding device of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fixing part of this utility model;

[0022] Figure 5 This is a schematic diagram of the extrusion section of this utility model;

[0023] The components include: top block-1, clamping part-11, connecting part-12, positioning strip-13, pressing device-2, extrusion channel-21, inclined part-211, pressing cylinder-22, support cylinder-23, lifting groove-231, wire exiting device-3, extrusion die-31, fixing part-311, positioning bolt-3111, demolding hole-3112, extrusion part-312, mounting hole-3121, mounting groove-313, pressing hole-314, wire exiting hole-315, pressure cavity-316, extrusion die base-32, and lifting protrusion-322. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] like Figure 1 The metal wire extrusion die shown includes a top block 1, a pressing device 2, and a wire extrusion device 3. The top block 1 is disposed on one side of the pressing device 2, and the wire extrusion device 3 is disposed on the other side of the pressing device 2. The pressing device 2 is provided with an extrusion channel 21. The extrusion channel 21, the top block 1, and the wire extrusion device 3 are coaxially arranged. The top block 1 includes a clamping part 11, a connecting part 12, and a plurality of positioning strips 13. The radial dimension of the clamping part 11 is smaller than the radial dimension of the extrusion channel 21. The connecting part 12 is fixedly disposed at the end of the clamping part 11 away from the extrusion channel 21. The plurality of positioning strips 13 are evenly spaced on the side wall of the connecting part 12. When the top block 1 moves in the extrusion channel 21, the positioning strips 13 slide in cooperation with the extrusion channel 21.

[0027] In this mold, the end of the top block 1 furthest from the pressing device 2 is connected to the extrusion press rod. The wire extrusion device 3 is installed at the head of the extrusion press. The pressing device 2 is installed between the top block 1 and the wire extrusion device 3. The pressing device 2 achieves contact and separation with the wire extrusion device 3 through a hydraulic transmission device. During the extrusion wire production process, the ingot is placed into the extrusion channel 21. The wire extrusion device 3 is in contact with the pressing device 2 under the action of the transmission device. The top block 1 moves towards the extrusion channel 21 under the action of the extrusion press rod to extrude the ingot into wire. Because the top block 1 is designed to include multiple parts, including a tightening part 11, a connecting part 12, and a positioning strip 13, the radial dimension of the tightening part 11, which is the contact part with the ingot, is about 0.5 mm smaller than the radial dimension of the extrusion channel 21. Thus, when the tightening part 11 extrudes the ingot, the outer 0.5 mm of the ingot will not be subjected to force. During the extrusion process, under the reaction force of the outer ring at the ingot's head end and the extrusion force of the inner ring at the ingot's tail end, the oxides and impurities on the outer ring of the ingot will peel off backward and coat the top block 1, forming an extrusion skin. This achieves the effect of ingot extrusion peeling. Using this method to peel the surface of the ingot can quickly and effectively remove the oxide film and impurities on the ingot surface, thereby improving the production quality and efficiency of extruded wire. Because the size of the tightening part 11 is smaller than the size of the extrusion channel 21, the pressure applied to the ingot during the extrusion process is prone to unevenness. However, the positioning strip 13 can contact the extrusion channel 21 during the extrusion process, ensuring that the top block 1 can apply pressure evenly to the ingot, thus guaranteeing the peeling effect.

[0028] Furthermore, such as Figure 3 and Figure 4 As shown, the wire extrusion device 3 includes an extrusion die 31 and an extrusion die base 32. The extrusion die 31 is fixed to one end of the extrusion die base 32 near the extrusion channel 21. The extrusion die 31 includes a fixing part 311 and an extrusion part 312. The fixing part 311 is provided with a mounting groove 312 at one end near the extrusion channel 21. The extrusion part 312 is fixedly disposed in the mounting groove 312. The extrusion part 312 is circumferentially spaced with a plurality of wire pressing holes 314. The fixing part 311 is circumferentially spaced with a plurality of wire exiting holes 315. The wire pressing holes 314 and the wire exiting holes 315 are correspondingly arranged. During the extrusion process, the wire extrusion device 3 will be subjected to a large pressure. By designing the wire extrusion device 3 into two separable parts, the extrusion die 31 and the extrusion die base 32, the extrusion die 31 only needs to use a high-strength metal material while the extrusion die base 32 uses an ordinary metal material. This can save on the manufacturing cost of the die while meeting the structural strength requirements of the wire extrusion die. The wire outlet holes 315 and wire pressing holes 314, which are set at corresponding intervals in the circumferential direction, ensure the uniform distribution of the wire during the wire output process, avoid the tangling between the wires, and further improve the wire output quality and efficiency.

[0029] As a preferred option, such as Figure 2 and Figure 3 As shown, the length of the mounting groove 312 is greater than the length of the extrusion section 312, thus forming a residual pressure cavity 316 between the top of the extrusion section 312 and the top of the fixing section 311. A cutter is provided above the pressing device 2 and the wire feeding device 3. When the top block 1 moves to the end near the wire feeding device 3, the cutter is needed to separate the top block 1, which is covered with the oxide film of the ingot, from the remaining ingot material. The presence of the residual pressure cavity 316 ensures that when the top block 1 is separated from the remaining ingot material, a portion of the ingot material that has not yet been extruded into wire is retained in the residual pressure cavity 316. Thus, when extruding the next ingot, the remaining ingot material in the residual pressure cavity 316 and the new ingot continue to be fed into wire under the action of the top block 1, thereby achieving continuous wire feeding and improving the production efficiency of extruded wire.

[0030] As a preferred option, such as Figure 1 and Figure 2 As shown, the pressing device 2 includes a pressing cylinder 22 and a support cylinder 23. The pressing cylinder 22 is fixedly mounted on the inner wall of the support cylinder 23, and the extrusion channel 21 is mounted on the pressing cylinder 22 and coaxially arranged with it. During the wire production process, the ingot moves in the extrusion channel 21 under the action of the top block 1, and the inner wall of the extrusion channel 21 will bear a large pressure. By designing the pressing device 2 into two parts, the pressing cylinder 22 and the support cylinder 23, with the pressing cylinder 22 using a metal with high structural strength and the support cylinder 23 using ordinary metal, not only can its structural strength be improved, but the manufacturing cost of the mold can also be reduced.

[0031] As a preferred option, such as Figure 4 and Figure 5 As shown, the end of the extrusion section 312 away from the extrusion channel 21 is provided with a mounting hole 3121, and a positioning bolt 3111 is provided on the fixing part 311, which is fixedly installed in the mounting hole 3121. The extrusion section 312 is designed as a detachable component, which facilitates the replacement of extrusion sections 312 with different diameters of wire pressing holes 314, thereby enabling the production of wires with different wire diameters. The positioning bolt 3111 and the mounting hole 3121, as a stable and convenient fixing method, can effectively prevent relative movement or loosening between the extrusion section 312 and the fixing part 311, ensuring the stability and reliability of the entire structure.

[0032] As a preferred option, such as Figure 4 As shown, the fixing part 311 is provided with a demolding hole 3112, which is parallel to the wire exit hole 315. The presence of the demolding hole 3112 facilitates the replacement of the extrusion part 312. The extrusion part 312 can be directly ejected through the demolding hole 3112, making it easier to remove from the mold, reducing the resistance during demolding, and avoiding product damage or mold wear caused by demolding difficulties.

[0033] As a preferred option, such as Figure 1 and Figure 2 As shown, both ends of the support cylinder 23 are provided with lifting grooves 231, and the extrusion die 31 is provided with lifting protrusions. Because the die is made of high-density metal and has a large volume and weight, the pressing device 2 and the wire extrusion device 3 are installed on the extruder by means of lifting. The design of the lifting grooves 231 and the lifting protrusions facilitates their lifting, thereby ensuring that the die will not shake during operation.

[0034] As a preferred option, such as Figure 1 and Figure 2 As shown, an inclined portion 211 is provided at one end of the extrusion channel 21 near the top block 1. The radial dimension of the end of the inclined portion 211 away from the extrusion channel 21 is larger than the radial dimension of the extrusion channel 21. The design of the inclined portion 211 facilitates the smooth entry of the ingot into the extrusion channel 21, avoiding work-related accidents caused by the ingot getting stuck at the inlet and continuing to be extruded, which could lead to the ingot flying out and injuring people.

[0035] In summary, this metal wire extrusion die can peel off the ingot during the production of extruded wire, thereby cleaning up the thick oxide film and impurities on the surface of the ingot, improving the production quality and efficiency of extruded wire.

[0036] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire extrusion die characterized by: The utility model provides an extrusion device, including top block (1), pressing device (2) and silk outlet device (3), top block (1) is arranged in pressing device (2) one side, silk outlet device (3) is arranged in pressing device (2) the other side, be provided with extrusion channel (21) on pressing device (2), extrusion channel (21), top block (1) and silk outlet device (3) coaxial arrangement is arranged, top block (1) includes tight part (11), connecting portion (12) and a plurality of positioning strip (13), the radial dimension of tight part (11) is less than the radial dimension of extrusion channel (21), connecting portion (12) is fixedly arranged in the one end of tight part (11) away from extrusion channel (21), a plurality of positioning strip (13) are evenly spaced and arranged on the side wall of connecting portion (12), when positioning strip (13) and extrusion channel (21) sliding fit, top block (1) moves in extrusion channel (21).

2. The wire extrusion die of claim 1, wherein: The utility model provides an extrusion device, including top block (1), pressing device (2) and silk outlet device (3), top block (1) is arranged in pressing device (2) one side, silk outlet device (3) is arranged in pressing device (2) the other side, be provided with extrusion channel (21) on pressing device (2), extrusion channel (21), top block (1) and silk outlet device (3) coaxial arrangement is arranged, top block (1) includes tight part (11), connecting portion (12) and a plurality of positioning strip (13), the radial dimension of tight part (11) is less than the radial dimension of extrusion channel (21), connecting portion (12) is fixedly arranged in the one end of tight part (11) away from extrusion channel (21), a plurality of positioning strip (13) are evenly spaced and arranged on the side wall of connecting portion (12), when positioning strip (13) and extrusion channel (21) sliding fit, top block (1) moves in extrusion channel (21).

3. The wire extrusion die of claim 2, wherein: The length of mounting groove (313) is greater than the length of extrusion part (312) to form pressure excess cavity (316) between the top end of extrusion part (312) and the top end of fixed part (311).

4. The wire extrusion die of claim 2, wherein: The utility model provides an extrusion device, including top block (1), pressing device (2) and silk outlet device (3), top block (1) is arranged in pressing device (2) one side, silk outlet device (3) is arranged in pressing device (2) the other side, be provided with extrusion channel (21) on pressing device (2), extrusion channel (21), top block (1) and silk outlet device (3) coaxial arrangement is arranged, top block (1) includes tight part (11), connecting portion (12) and a plurality of positioning strip (13), the radial dimension of tight part (11) is less than the radial dimension of extrusion channel (21), connecting portion (12) is fixedly arranged in the one end of tight part (11) away from extrusion channel (21), a plurality of positioning strip (13) are evenly spaced and arranged on the side wall of connecting portion (12), when positioning strip (13) and extrusion channel (21) sliding fit, top block (1) moves in extrusion channel (21).

5. The wire extrusion die of claim 2, wherein: The end of extrusion part (312) away from extrusion channel (21) is provided with mounting hole (3121), and fixed part (311) is provided with positioning bolt (3111), positioning bolt (3111) is fixedly installed in mounting hole (3121).

6. The wire extrusion die of claim 2, wherein: Fixed part (311) is provided with demoulding hole (3112), and demoulding hole (3112) is parallel with silk outlet hole (315).

7. The wire extrusion die of claim 4, wherein: Both ends of support cylinder (23) are provided with hoisting groove (231), and extrusion die holder (32) is provided with hoisting convex (322).

8. The wire extrusion die of claim 4, wherein: The end of extrusion channel (21) close to top block (1) is provided with inclined part (211), and the radial dimension of the end of inclined part (211) away from extrusion channel (21) is greater than the radial dimension of extrusion channel (21).

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