Extrusion structure for contact wire and stranded wire
By opening guide grooves on the rim of the compaction roller and adding a friction-enhancing structure, the problem of insufficient extrusion pressure was solved, the extrusion effect was improved, and the grain size and quality of the product were ensured.
Patent Information
- Application Number
- CN202422945056.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In the existing technology, insufficient extrusion pressure is present when extruding contact wires and stranded wires, resulting in substandard grain size and quality of the products.
A guide groove is opened on the rim of the compaction wheel, and a friction-enhancing structure is set in the guide groove to increase the friction force. The movement space and friction force of the bar material are further limited by the guide groove and the guide groove of the extrusion wheel.
The increased extrusion pressure stabilized the temperature inside the extrusion chamber, ensuring the grain size and quality of the final product.
Smart Images
Figure CN223513712U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to extruding machine technical field, concretely relates to a kind of extruding structure for contact wire and stranded wire. BACKGROUND
[0002] Extruding machine can be used for the extrusion of contact wire and stranded wire. Figure 1 It is composed of four parts: 1) extruding wheel 1, the rim of extruding wheel 1 is made of concave groove, which is driven by driving shaft to rotate; 2) fixed extruding shoe, the part contacting with extruding wheel is an arcuate slot block 4, the wrap angle of slot block 4 and extruding wheel 1 is generally 90 degrees, which plays a role in closing the concave groove of extruding wheel 1, forming a square extruding cavity 5, which is equivalent to a conventional extruding cylinder, but the three sides of this square extruding cylinder are the slot walls of rotating extruding wheel groove, and the fourth side is the fixed slot block; 3) plug fixed at the outlet end of extruding cavity, which plays a role in sealing the outlet end of extruding cavity, forcing the metal to flow out of the extruding die 6; 4) extruding die, which is installed on the plug to implement tangential extrusion, or installed on the shoe block to implement radial extrusion.
[0003] In this way, when continuously feeding rod material 3 from the inlet end of extruding cavity, extruding wheel 1 and compacting wheel 2 cooperate, and due to the three sides being movable edges moving forward, under the action of friction, the wheel groove bites the billet and drags the metal to move towards the die hole, when the clamping length is sufficient, the action of friction can make the temperature of the deformation zone rise by 400-500℃ without external heating to realize hot extrusion, and an extrusion stress as high as 1000MPa is generated near the die hole, forcing the metal to flow out of the die hole.
[0004] However, for low-melting-point metals such as aluminum and aluminum alloys, there is a situation of slipping due to insufficient friction during extrusion; during actual extrusion, the compacting wheel and the extruding wheel do not completely adhere to the surface of the rod material during rotation, and there is partial slipping, which causes insufficient extrusion force and unstable temperature in the extrusion cavity, and the grain size and quality of the final product do not meet the expected effect. INVENTION CONTENTS
[0005] The utility model provides a kind of extruding structure for contact wire and stranded wire to solve the technical problem that extrusion contact wire and stranded wire in prior art is insufficient, leading to the grain size and quality of product are poor.
[0006] To solve the above problems, the extruding structure for contact wire and stranded wire provided by the utility model adopts the following technical scheme:
[0007] An extrusion structure for contact wires and stranded wires includes a compaction wheel and an extrusion wheel arranged opposite to each other, with a channel for rod material to enter between the compaction wheel and the extrusion wheel. The extrusion wheel has a guide groove. The structure also includes a plug device, a forming die, and a cavity device arranged in the direction of rod material movement. The rim of the compaction wheel has a guide groove, and the guide groove also has a friction-enhancing structure to increase the friction force on the rod material.
[0008] The beneficial effects of the extrusion structure for contact wires and stranded wires provided by this utility model are as follows: by opening a guide groove on the rim of the compaction wheel, the movement space of the rod material is further limited. At the same time, the friction-enhancing structure is added to further increase the friction force. For easily slipping rod materials such as aluminum and aluminum alloys, the extrusion pressure is improved, so that the temperature in the extrusion chamber is kept in a stable state, ensuring the grain size and quality of the final product. This solves the technical problem of insufficient extrusion pressure when extruding contact wires and stranded wires in the prior art, which leads to poor grain size and quality of the product.
[0009] Furthermore, the guide groove is a rectangular groove, and each sharp edge is rounded to make the groove surface form a circular curved surface.
[0010] Furthermore, the guide groove has a width of 20.1 mm and a radius of 9.95 mm, and all sharp edges are rounded with an radius of 0.2. This design prevents the sharp edges from damaging the rod material.
[0011] Furthermore, the friction-enhancing structure is a textured surface provided inside the guide groove.
[0012] Furthermore, the processed texture consists of multiple rows of rectangular textures measuring 1mm x 2mm, with a depth of 1mm, and the multiple rows of rectangular textures are staggered.
[0013] Furthermore, the guide groove of the extrusion wheel is provided with the same friction-enhancing structure as the guide groove. This design further increases the friction between the extrusion wheel and the bar material, thus improving the extrusion effect. Attached Figure Description
[0014] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:
[0015] Figure 1 This is a schematic diagram of the extrusion structure of an extruder in the prior art;
[0016] Figure 2 This is a front view of a compaction wheel in the prior art;
[0017] Figure 3 This is a side view of a compaction wheel in the prior art;
[0018] Figure 4 This is an overall schematic diagram of the extrusion structure for contact wires and stranded wires provided by this utility model.
[0019] Figure 5 for Figure 4 Side view of the engagement of the intermediate pressure compactor and the extrusion roller;
[0020] Figure 6 for Figure 5 Enlarged diagram of point A in the middle.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Extrusion roller; 2. Compactor roller; 3. Rod material; 4. Groove sealing block; 5. Extrusion cavity; 6. Extrusion die; 7. Plug device; 8. Forming die; 9. Cavity device; 10. Guide groove; 11. Processing texture; 12. Guide groove. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] It should be noted that the main concept of this utility model is to further limit the movement space of the rod material 3 by opening a guide groove 10 on the rim of the compaction wheel 2, and at the same time add a friction-enhancing structure to further increase the friction force. For easily slipping rod materials such as aluminum and aluminum alloys, the extrusion pressure is improved, so that the temperature in the extrusion chamber is kept in a stable state, ensuring the grain size and quality of the final product. This solves the technical problem of insufficient extrusion pressure when extruding contact wires and stranded wires in the prior art, which leads to poor grain size and quality of the product.
[0025] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.
[0026] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.
[0027] Example 1 of the extrusion structure for contact wires and stranded wires provided by this utility model:
[0028] First, let's introduce the structure of the compaction wheel 2 in the existing technology, referring to... Figure 2 and Figure 3 In existing technologies, the compaction wheel 2 has a smooth surface and no special structure. The following will explain... Figures 4 to 6 This invention introduces the structure of the extrusion structure for contact wires and stranded wires provided by this utility model.
[0029] like Figures 4 to 6 As shown, an extrusion structure for contact wires and stranded wires includes a compaction wheel 2 and an extrusion wheel 1 arranged opposite to each other, with a channel for rod material 3 to enter between the compaction wheel 2 and the extrusion wheel 1. The extrusion wheel 1 has a guide groove 12, and also includes a plug device 7, a forming mold 8 and a cavity device 9 arranged in the moving direction of the rod material 3. The rim of the compaction wheel 2 is provided with a guide groove 10, and the guide groove 10 also has a friction-enhancing structure to increase the friction force on the rod material 3.
[0030] In this embodiment, the guide groove 10 is a rectangular groove, and all sharp edges are rounded to form a circular curved surface. Specifically, the guide groove 10 has a width of 20.1 mm and a radius of 9.95 mm, and all sharp edges are rounded with a radius of R0.2. This design avoids damage to the rod material 3 by the sharp edges.
[0031] Regarding the friction-enhancing structure: The friction-enhancing structure is a treatment pattern 11 disposed inside the guide groove 10. Specifically, the treatment pattern 11 is a multi-row rectangular pattern of 1mm x 2mm, the depth of the rectangular pattern is 1mm, and the multiple rows of rectangular patterns are staggered.
[0032] Compared to the original compaction roller 2, the contact area has increased by 57%, providing 56% more friction. The grooved circular curved surface reduces the vibration of the bar material 3 during continuous extrusion, improves the stability of the temperature of the bar material 3 entering the cavity, and the 1mm x 2mm staggered rectangular pattern increases the continuous extrusion pressure, reduces the grain size, and improves the overall surface and internal quality of the product.
[0033] To further enhance friction, the guide groove 12 of the extrusion roller 1 is equipped with the same friction-enhancing structure as the guide groove 10. This design further increases the friction between the extrusion roller 1 and the rod material 3, thereby improving the extrusion effect.
[0034] The working principle of the extrusion structure for contact wires and stranded wires provided by this utility model is as follows: Copper and copper alloy (or aluminum alloy and other non-ferrous metals) rods 3 are guided into the extrusion mold 6 and cavity device 9 through the guide groove 10 of the compaction roller 2 and the guide groove 12 of the extrusion roller 1 under friction and precise positioning. Under the continuous extrusion pressure of the extrusion roller 1 and the compaction roller 2, the material is blocked by the plug device 7 during its forward flow and thus changes direction. Under the continued extrusion pressure, it continues to move forward through the forming device and finally passes through the guide groove 10 to form various extruded copper and copper alloy products (or aluminum alloy and other non-ferrous metal products). The whole process increases the extrusion pressure, keeps the temperature in the extrusion cavity in a stable state, and ensures the grain size and quality of the final product.
[0035] Embodiment 2 of the extrusion structure for contact wires and stranded wires provided by this utility model:
[0036] Its main difference from Example 1 is:
[0037] In Example 1, the texture is a multi-row rectangular pattern of 1mm x 2mm with a depth of 1mm, and the multiple rows of rectangular patterns are staggered.
[0038] In this embodiment, the texture can also be other shapes, such as parallelograms.
[0039] Embodiment 3 of the extrusion structure for contact wires and stranded wires provided by this utility model:
[0040] Its main difference from Example 1 is:
[0041] In Example 1, the guide groove has a width of 20.1 mm and a radius of 9.95 mm, and all sharp edges are rounded with a radius of R0.2. This design prevents the sharp edges from damaging the rod material.
[0042] In this embodiment, the dimensions can also be adjusted according to actual needs.
[0043] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.
[0044] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.
Claims
1. An extrusion structure for contact wires and stranded wires, comprising a compaction wheel and an extrusion wheel arranged opposite to each other, a channel for feeding rod material between the compaction wheel and the extrusion wheel, the extrusion wheel having a guide groove, and further comprising a plug device, a forming die, and a cavity device arranged in the direction of rod material movement, characterized in that: The rim of the compaction wheel is provided with a guide groove, and the guide groove also has a friction-enhancing structure to increase the friction force on the rod material.
2. The extrusion structure for contact wires and stranded wires according to claim 1, characterized in that: The guide groove is a rectangular groove, and all sharp edges are rounded to make the groove surface form a circular curved surface.
3. The extrusion structure for contact wires and stranded wires according to claim 2, characterized in that: The guide groove has a width of 20.1 mm and a radius of 9.95 mm, and all sharp edges are rounded with a radius of R0.
2.
4. The extrusion structure for contact wires and stranded wires according to any one of claims 1 to 3, characterized in that: The friction-enhancing structure is a textured surface provided inside the guide groove.
5. The extrusion structure for contact wires and stranded wires according to claim 4, characterized in that: The texture is a multi-row rectangular pattern of 1mm x 2mm, with a depth of 1mm, and the multiple rows of rectangular patterns are staggered.
6. The extrusion structure for contact wires and stranded wires according to claim 5, characterized in that: The guide groove of the extrusion wheel has the same friction-enhancing structure as the guide groove.