A billet positioning and extrusion integrated device for copper strip breakdown

Abstract

The utility model discloses a billet positioning and extrusion integrated equipment for copper strip blooming, include: base, feed mechanism, it includes feed frame and elastic centering unit, elastic centering unit includes spring and the guide block of installation in spring, extrusion mechanism, it includes extrusion frame, first extrusion unit and second extrusion unit, first extrusion unit includes first backing plate and first roller, first backing plate is towards the bearing surface of copper material and is set with an arc recess, second extrusion unit includes second backing plate and second roller, wherein, when copper material enters feed mechanism, its both sides are corrected to the intermediate position of predetermining through the elastic constraint of guide block, when copper material enters first extrusion unit, copper material is primarily extruded and is further positioned in the middle part of arc recess. The equipment can improve the centering stability and deformation uniformity of billet in the extrusion process under the premise of not increasing the equipment complexity and operation difficulty significantly.

Description

Technical Field

[0001] This utility model relates to the field of copper strip billet forming technology, and in particular to an integrated equipment for billet positioning and extrusion for copper strip blanking. Background Technology

[0002] As a crucial industrial material, the quality of copper strip billet production directly impacts the efficiency of subsequent finishing rolling processes and the performance of the final product. In copper strip billet production, preheated copper billets are typically shaped using extrusion or rolling to obtain intermediate products of specific widths and thicknesses. During this process, the alignment accuracy of the billet before entering the extrusion rollers and the uniformity of stress during extrusion are key factors affecting the dimensional consistency and surface quality of the billet.

[0003] In existing production technologies, feed guidance often employs fixed guide devices or simple mechanical limiting structures. These structures have limited adaptability to initial positional deviations and slight misalignment of the billet during its journey, potentially leading to jamming or increased friction on one side at the extrusion inlet. When the billet fails to enter the extrusion zone in an ideal centered state, uneven extrusion load distribution can easily occur, resulting in problems such as excessive thickness tolerances on both sides of the product, edge cracking, or surface scratches, affecting the stability of the production process and the yield.

[0004] Therefore, it is necessary to design a preliminary forming device that can keep the position of the copper billet relatively stable, so as to improve the centering stability and deformation uniformity of the billet during the extrusion process without significantly increasing the complexity of the equipment and the difficulty of operation. Utility Model Content

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides an integrated billet positioning and extrusion device for copper strip blanking. This device can improve the centering stability and deformation uniformity of the billet during the extrusion process without significantly increasing equipment complexity or operational difficulty.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an integrated billet positioning and extrusion device for copper strip blanking, comprising:

[0008] The base includes support legs and support plates;

[0009] A feeding mechanism is mounted on the support plate; it includes a feeding frame and two symmetrically arranged elastic centering units, the working surfaces of the two elastic centering units facing each other; each elastic centering unit includes a spring whose tail is connected to the feeding frame and a guide block fixedly installed on the free end of the spring.

[0010] An extrusion mechanism is mounted on the support plate and located downstream of the feeding mechanism; it includes an extrusion frame, a first extrusion unit, and a second extrusion unit.

[0011] The first extrusion unit includes a first pad and a first roller rotatably mounted on the extrusion frame; an arc-shaped groove is formed on the bearing surface of the first pad facing the copper material;

[0012] The second extrusion unit is located downstream of the first extrusion unit and includes a second pad and a second roller rotatably mounted on the extrusion frame;

[0013] in,

[0014] When the copper material enters the feeding mechanism, its two sides are corrected to a preset middle position by the elastic constraint of the guide block;

[0015] When the copper material enters the first extrusion unit, it is initially extruded and further positioned in the center of the arc-shaped groove.

[0016] Furthermore, the rolling working surface of the first roller is a rotating ellipsoid, with its central diameter being larger than its two end diameters.

[0017] Furthermore, the maximum contour radius of curvature of the rotational ellipsoid of the first roller is R1;

[0018] The radius of curvature of the arc-shaped groove in the first pad is R2;

[0019] R1 is greater than R2.

[0020] Furthermore, the ratio of R1 to R2 ranges from 1.02 to 1.15.

[0021] Furthermore, each of the elastic centering units includes at least two springs positioned at the same height along the copper feed direction.

[0022] Furthermore, for each of the elastic centering units, the elastic stiffness of the spring located downstream of the copper material is greater than the elastic stiffness of the spring located upstream of the copper material.

[0023] Furthermore, in each of the elastic centering units, along the direction of copper material movement, the elastic stiffness of adjacent springs increases sequentially, and the stiffness ratio coefficient of adjacent springs is not less than 1.25.

[0024] Furthermore, the outer peripheral working surface of the guide block of each of the elastic centering units is covered with a solid lubricating coating with a thickness of not less than 1 mm.

[0025] This utility model has at least the following advantages or beneficial effects:

[0026] This invention employs an elastic centering unit with springs and guide blocks, which provides flexible guidance and automatic centering for the copper material. It also utilizes a first extrusion unit with a first pad having an arc-shaped groove that cooperates with a first roller. This structure provides initial extrusion of the copper material and guides it for further centering. A second extrusion unit is used for final forming. Overall, this invention enables continuous centering and multi-stage extrusion forming of copper billets on a single machine, helping to improve the consistency of billet dimensions.

[0027] This invention employs a first roller with a rotating ellipsoidal working surface. This structure generates a centripetal force during the extrusion process, helping to guide the copper material towards the extrusion centerline. Overall, this invention improves the uniformity of copper material flow in the width direction.

[0028] This invention employs a spring arrangement with progressively increasing elastic stiffness along the feeding direction. This structure provides gradually increasing guiding and restraining force to the copper material before it enters the extrusion unit. Overall, this invention achieves a smooth transition and correction of the copper material's position, avoiding vibration or jamming caused by sudden changes in force. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the overall structure of an integrated equipment for billet positioning and extrusion used for copper strip blanking;

[0031] Figure 2 This is a schematic diagram of the feeding mechanism.

[0032] Figure 3 for Figure 2 Left view of the feeding mechanism;

[0033] Figure 4 for Figure 2 A top view of the feeding mechanism;

[0034] Figure 5 This is a schematic diagram of the extrusion mechanism.

[0035] Figure 6 for Figure 5 Left view of the extrusion mechanism;

[0036] Figure 7 for Figure 5 Top view of the extrusion mechanism.

[0037] Figure label:

[0038] 1-Base; 11-Support leg; 12-Support plate;

[0039] 2-Feeding mechanism; 21-Feeding rack; 22-Elastic centering unit; 221-Spring; 222-Guide block;

[0040] 3-Extrusion mechanism; 31-Extrusion frame; 32-First extrusion unit; 321-First pad; 3211-Arc-shaped groove; 322-First roller; 33-Second extrusion unit; 331-Second pad; 332-Second roller. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0042] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limitations on this utility model.

[0045] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0046] The embodiments of this utility model will be described in detail below.

[0047] This utility model discloses an integrated billet positioning and extrusion device for copper strip blanking. The device mainly includes a base 1, a feeding mechanism 2, and an extrusion mechanism 3.

[0048] Figure 1 This is a schematic diagram of the overall structure of an integrated equipment for blank positioning and extrusion of copper strip.

[0049] The base 1 serves to provide a stable installation foundation and working platform for the entire equipment. It consists of support legs 11 and support plates 12. The support legs 11 are fixed to the ground with anchor bolts, and the support plates 12 are welded to the top of the support legs 11 to form a working surface. The support plates 12 provide an installation reference for the feeding mechanism 2 and the extrusion mechanism 3.

[0050] Figure 2 This is a schematic diagram of the feeding mechanism. Figure 3 for Figure 2 Left view of the feeding mechanism; Figure 4 for Figure 2 A top view of the feeding mechanism.

[0051] The feeding mechanism 2 is fixedly installed on the support plate 12 by bolts, and its function is to perform preliminary positioning and guidance of the copper material transported from upstream.

[0052] The feeding mechanism 2 includes a feeding rack 21 and two symmetrically arranged elastic centering units 22.

[0053] The feed rack 21 is made of welded steel sections and its function is to support the elastic centering unit 22.

[0054] The working surfaces of the two elastic centering units 22 are arranged facing each other to form an adjustable-width guide channel. Each elastic centering unit 22 includes a spring 221 and a guide block 222.

[0055] The tail of the spring 221 is fixed to the feed rack 21 by a threaded connection, and the guide block 222 is installed on the free end of the spring 221.

[0056] Each elastic centering unit 22 includes at least two springs 221 arranged at the same height along the copper feed direction. In this embodiment, each elastic centering unit 22 is provided with two springs 221, with a center distance of 80 mm; in other embodiments, each elastic centering unit 22 may also be provided with three or four springs 221, with a center distance of 60-100 mm.

[0057] For each elastic centering unit 22, the elastic stiffness of the spring 221 located downstream of the copper material is greater than that of the spring 221 located upstream of the copper material. Within each elastic centering unit 22, along the copper material's advancing direction, the elastic stiffness of adjacent springs 221 increases sequentially, and the stiffness ratio coefficient between adjacent springs is not less than 1.25. In this embodiment, the stiffness ratio coefficient between adjacent springs is 1.3, with the upstream spring stiffness at 80 N / mm and the downstream spring stiffness at 105 N / mm; in other embodiments, the stiffness ratio coefficient between adjacent springs can also be 1.25 or 1.35, with spring stiffness ranging from 60 to 120 N / mm. This stiffness gradient design allows the copper material to be subjected to progressively increasing guiding constraints before entering the extrusion unit, which is beneficial for achieving smooth positional transition correction.

[0058] The function of guide block 222 is to contact the side of the copper material and provide elastic constraint force during the movement of the copper material.

[0059] The outer peripheral working surface of the guide block 222 of each elastic centering unit 22 is covered with a solid lubricant coating with a thickness of not less than 1 mm. The function of the solid lubricant coating is to reduce the coefficient of friction between the guide block 222 and the copper material, thereby reducing wear. In this embodiment, the solid lubricant coating is made of molybdenum disulfide-based composite material, produced by thermal spraying, with a coating thickness of 1.2 mm; in other embodiments, the solid lubricant coating can also be made of graphite-based or polytetrafluoroethylene composite material, with a coating thickness ranging from 1.0 to 2.0 mm, and the application process can be plasma spraying or flame spraying. The presence of the solid lubricant coating can reduce the sliding frictional resistance between the guide block 222 and the copper material, helping to maintain centering accuracy.

[0060] Figure 5 This is a schematic diagram of the extrusion mechanism. Figure 6 for Figure 5 Left view of the extrusion mechanism; Figure 7 for Figure 5 Top view of the extrusion mechanism.

[0061] The extrusion mechanism 3 is bolted to the support plate 12 and is located downstream of the feeding mechanism 2. Its function is to perform multi-stage extrusion molding on the pre-positioned copper material. The extrusion mechanism 3 includes an extrusion frame 31, a first extrusion unit 32, and a second extrusion unit 33.

[0062] The extrusion frame 31 adopts a welded steel plate structure, and its function is to provide mounting support for the first extrusion unit 32 and the second extrusion unit 33.

[0063] The first extrusion unit 32 includes a first pad 321 and a first roller 322.

[0064] The first pad 321 is fixed to the support plate 12 by bolts. An arc-shaped groove 3211 is formed on the bearing surface of the first pad 321 facing the copper material. The function of the arc-shaped groove 3211 is to guide the copper material to gather towards its center. In this embodiment, the arc-shaped groove 3211 is formed by milling; in other embodiments, the arc-shaped groove 3211 can also be formed by grinding or electrical discharge machining, with a groove depth ranging from 10-20 mm and a groove width ranging from 100-150 mm.

[0065] The first roller 322 is rotatably mounted on the extrusion frame 31 via a shaft and bearings.

[0066] In this embodiment, the rolling working surface of the first roller 322 is a rotating ellipsoid, with its central diameter being larger than its two end diameters. This shape can generate a centripetal force during the extrusion process, promoting the accumulation of copper material towards the center. In addition, the maximum contour radius of curvature of the rotating ellipsoid of the first roller 322 is R1, and the radius of curvature of the arc-shaped groove 3211 of the first pad 321 is R2, with R1 being greater than R2.

[0067] In this embodiment, R1 is 150mm, R2 is 130mm, and the ratio of R1 to R2 is 1.12 to 1.2; in other embodiments, the ratio of R1 to R2 can also be between 1.02 and 1.15, with R1 ranging from 140 to 160mm and R2 ranging from 125 to 145mm.

[0068] In other embodiments, the rolling working surface of the first roller 322 may also be a double conical surface or a drum-shaped surface.

[0069] The second extrusion unit 33 is located downstream of the first extrusion unit 32, and includes a second pad 331 and a second roller 332.

[0070] The second pad 331 is fixed to the support plate 12 by bolts.

[0071] The second roller 332 is rotatably mounted on the extrusion frame 31 via a shaft and bearings. The function of the second roller 332 is to perform the final shaping of the copper material after preliminary extrusion.

[0072] Both the first roller 322 and the second roller 332 are driven by a motor (not shown in the figure). The motor provides rotational power to the rollers to achieve the extrusion operation. In this embodiment, the motor is directly connected to the roller shaft via a coupling; in other embodiments, the motor can also drive the rollers via belt drive or gear drive. The motor type can be a servo motor or a variable frequency motor.

[0073] Specifically, when the copper material enters the feeding mechanism 2, its two sides are corrected to the preset middle position by the elastic constraint of the guide block 222; when the copper material enters the first extrusion unit 32, the copper material is initially extruded and further positioned in the middle of the arc-shaped groove 3211; then it enters the second extrusion unit 33 to complete the final forming.

[0074] Overall, this invention employs an elastic centering unit 22 with a spring 221 and a guide block 222, a first extrusion unit 32 with an arc-shaped groove 3211 cooperating with a first roller 322, and a second extrusion unit 33. The elastic centering unit 22 provides flexible guidance and automatic centering for the copper material, and its elastic constraint mechanism can adapt to the dimensional fluctuations of the copper material. The first extrusion unit 32 performs preliminary extrusion on the copper material and guides it to further center, and the cooperation between the arc-shaped groove 3211 and the rotating ellipsoidal roller can generate a centripetal extrusion effect. The second extrusion unit 33 performs the final forming. This multi-stage cooperative structural design can improve the centering stability and deformation uniformity of the copper material during the extrusion process to a certain extent, which helps to improve the consistency of the billet forming size and has a certain positive effect on improving the quality of copper strip blanking and production efficiency.

[0075] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An integrated billet positioning and extrusion device for copper strip blanking, characterized in that, include: The base (1) includes a support leg (11) and a support plate (12); The feeding mechanism (2) is mounted on the support plate (12); it includes a feeding frame (21) and two symmetrically arranged elastic centering units (22), the working surfaces of the two elastic centering units (22) are arranged facing each other; the elastic centering unit (22) includes a spring (221) whose tail is connected to the feeding frame (21) and a guide block (222) fixedly installed on the free end of the spring (221). The extrusion mechanism (3) is mounted on the support plate (12) and located downstream of the feeding mechanism (2); it includes an extrusion frame (31), a first extrusion unit (32) and a second extrusion unit (33). The first extrusion unit (32) includes a first pad (321) and a first roller (322) rotatably mounted on the extrusion frame (31); an arc-shaped groove (3211) is formed on the bearing surface of the first pad (321) facing the copper material. The second extrusion unit (33) is located downstream of the first extrusion unit (32), and includes a second pad (331) and a second roller (332) rotatably mounted on the extrusion frame (31). in, When the copper material enters the feeding mechanism (2), its two sides are corrected to the preset middle position by the elastic constraint of the guide block (222); When the copper material enters the first extrusion unit (32), the copper material is initially extruded and further positioned in the middle of the arc-shaped groove (3211).

2. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 1, characterized in that, The rolling working surface of the first roller (322) is a rotating ellipsoid, with its central diameter being larger than the diameters at both ends.

3. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 2, characterized in that: The maximum contour radius of curvature of the rotating ellipsoid of the first roller (322) is R1; The radius of curvature of the arc-shaped groove (3211) of the first pad (321) is R2; R1 is greater than R2.

4. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 3, characterized in that, The ratio of R1 to R2 ranges from 1.02 to 1.

15.

5. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 1, characterized in that, Each of the elastic centering units (22) includes at least two springs (221) arranged at the same height along the copper feed direction.

6. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 5, characterized in that, For each of the elastic centering units (22), the elastic stiffness of the spring (221) located downstream of the copper material is greater than that of the spring (221) located upstream of the copper material.

7. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 6, characterized in that, In each of the elastic centering units (22), along the direction of copper material advance, the elastic stiffness of adjacent springs (221) increases sequentially, and the stiffness ratio coefficient of adjacent springs is not less than 1.

25.

8. The integrated billet positioning and extrusion equipment for copper strip blanking according to claim 1, characterized in that, The outer peripheral working surface of the guide block (222) of each of the elastic centering units (22) is covered with a solid lubricating coating with a thickness of not less than 1 mm.

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