High-precision copper strip trimming device

Abstract

The utility model discloses a high-precision copper strip trimming device, which comprises a leveling roller, a first die mechanism, a second die mechanism and a rubber roller which are sequentially arranged along the running direction of a copper strip, the first die mechanism and the second die mechanism respectively comprise two groups of adjustable die mechanisms which are symmetrically arranged, and each group of adjustable die mechanism comprises two trimming dies. Each trimming die can be adjusted in the direction perpendicular to the running direction of the copper strip. According to the utility model, the trimming efficiency of the transformer copper strip is improved, the delivery cycle of a product is shortened, and meanwhile, the edge quality, the plate shape quality and the flatness of the transformer copper strip are improved, so that the product quality of the transformer copper strip is improved.

Description

Technical Field

[0001] The utility model relates to a trimming device, in particular to a high-precision copper strip trimming device, belonging to the technical field of copper strip production. Background Art

[0002] The edge quality of the transformer copper belt has a great impact on the performance of the transformer. When there are burrs on the edge of the transformer copper belt, the hazards are mainly reflected in the following points: First, it affects the conductivity and resistance loss. If there are burrs on the edge of the copper belt, the contact resistance will increase, causing additional heat to be generated during the transmission of the current, that is, the copper loss will increase. This not only reduces the efficiency of the transformer, but may also accelerate the aging of the insulation material and affect the service life of the transformer; second, it affects the insulation performance and safety. If there are sharp burrs or unevenness on the edge of the copper belt, it may puncture the insulation material during the operation of the transformer, causing partial discharge or short circuit failure. This will not only damage the transformer itself, but may also cause greater power system failures and affect power supply safety; third, it affects mechanical strength and stability. If the edge is not properly handled, such as cracks, creases, etc., it may cause the copper belt to break or deform during the operation of the transformer, affecting the stability and reliability of the transformer; fourth, it affects maintenance costs and service life. Due to the various problems that may be caused by the poor quality of the copper belt edge, such as insulation damage, short circuit failure, etc., the maintenance cost of the transformer will increase. These failures require professional treatment and repair, and may even shorten the overall service life of the transformer due to premature failure, consuming a lot of manpower, material and financial resources. In summary, the quality of the transformer copper belt edge is crucial to the use of the transformer, including conductivity and resistance loss, insulation performance and safety, mechanical strength and stability, maintenance cost and service life. Therefore, in order to improve the quality of the transformer copper belt edge, the copper belt trimming accuracy should be overcome.

[0003] However, my country is still in the research stage in terms of transformer belt edge processing technology. Most transformer belts have not been specially processed, resulting in large burrs on the edges. The edge quality depends entirely on the precision of the shearing equipment and the technical level of the shear blade adjustment. This situation has led to the current situation that 80% of my country's transformer belts are imported. At present, the transformer copper belts produced mainly use the manual scraper method, which has a large fluctuation in edge quality, that is, the consistency of edge quality is insufficient, and the production speed is slow. At the same time, two workers are required to scrape the edges at the same time, increasing the production intensity. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-precision copper strip trimming device to improve the efficiency and quality of transformer copper strip trimming.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A high-precision copper strip trimming device comprises a leveling roller, a first mold mechanism, a second mold mechanism and a rubber roller which are sequentially arranged along the running direction of the copper strip, the first mold mechanism and the second mold mechanism respectively comprise two groups of symmetrically arranged adjustable mold mechanisms, each group of adjustable mold mechanisms comprises two trimming molds, and each trimming mold can be adjusted perpendicular to the running direction of the copper strip.

[0007] Furthermore, the adjustable mold mechanism includes a mechanism bracket, a first guide rail, a second guide rail, a first trimming mold, a first trimming mold bracket, a second trimming mold, a second trimming mold bracket, a first screw, a first hand wheel, a second screw and a second hand wheel. The first guide rail and the second guide rail are arranged perpendicular to the running direction of the copper strip, and the two ends of the first guide rail and the second guide rail are respectively fixed to the mechanism brackets on both sides. The first trimming mold is rotatably arranged on the first trimming mold bracket, and the two sides of the first trimming mold bracket are arranged on the first guide rail and the second guide rail through walking rollers. The second trimming mold is rotatably arranged on the first trimming mold bracket. The first trimming mold bracket is rotatably arranged on the second trimming mold bracket, and the two sides of the second trimming mold bracket are arranged on the first guide rail and the second guide rail through walking rollers. The two ends of the first screw are rotatably arranged on the mechanism brackets on both sides. The first hand wheel is fixed to one end of the first screw. The lower end of the first trimming mold bracket is sleeved on the outside of the first screw and is threadedly connected to the first screw. The second screw is sleeved on the outside of the first screw and the second screw is rotatably arranged on the mechanism bracket. The second hand wheel is fixed to one end of the second screw. The lower end of the second trimming mold bracket is sleeved on the outside of the second screw and is threadedly connected to the second screw.

[0008] Furthermore, the first trimming mold and the second trimming mold are vertically arranged cylindrical rollers, and a trimming groove is opened on the side of the cylindrical roller. The trimming groove consists of a semicircular bottom, a first opening inclination angle A and a second opening inclination angle B.

[0009] Furthermore, an arc-shaped chamfer is provided on the outer side of the trimming groove.

[0010] Furthermore, in the first mold mechanism and the second mold mechanism, the first opening inclination angle A of the trimming groove is 15°.

[0011] Furthermore, the radius of the semicircular bottom of the trimming groove in the first mold mechanism is 0.6 mm, and the angle of the second opening inclination angle B of the trimming groove in the first mold mechanism is 45°.

[0012] Furthermore, the radius of the semicircular bottom of the trimming groove in the second mold mechanism is 0.4 mm, and the angle of the second opening inclination angle B of the trimming groove in the second mold mechanism is 40°.

[0013] Furthermore, it also includes a first support roller, a second support roller, a third support roller and a fourth support roller, the first support roller is arranged on the front side of the leveling roller, the second support roller is arranged between the leveling roller and the first mold mechanism, the third support roller is arranged between the first mold mechanism and the second mold mechanism, and the fourth support roller is arranged between the second mold mechanism and the rubber roller.

[0014] Compared with the prior art, the utility model has the following advantages and effects: the utility model provides a high-precision copper strip trimming device, which improves the trimming efficiency of the transformer copper strip, shortens the product delivery cycle, and simultaneously improves the edge quality, plate shape quality and flatness of the transformer copper strip, thereby improving the product quality of the transformer copper strip; the invention realizes semi-automatic trimming of the transformer copper strip, can flexibly configure the position of the trimming mold to realize simultaneous slitting and trimming of a single, two or three transformer copper strips, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a high-precision copper strip trimming device.

[0016] Figure 2 It is a schematic diagram of the adjustable mold mechanism of the utility model.

[0017] Figure 3 It is a schematic diagram of the trimming groove of the utility model. DETAILED DESCRIPTION

[0018] In order to elaborate on the technical scheme adopted by the utility model to achieve the predetermined technical purpose, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a partial embodiment of the utility model, not all of the embodiments, and the technical means or technical features in the embodiment of the utility model can be replaced without paying creative labor. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0019] like Figure 1 As shown, a high-precision copper strip trimming device of the utility model comprises a leveling roller 1, a first mold mechanism 2, a second mold mechanism 3 and a rubber roller 4 arranged in sequence along the running direction of the copper strip, the first mold mechanism 2 and the second mold mechanism 3 respectively comprise two groups of symmetrically arranged adjustable mold mechanisms, each group of adjustable mold mechanisms comprises two trimming molds, and each trimming mold can be adjusted perpendicular to the running direction of the copper strip. In the utility model, the copper strip is first leveled to make the copper strip flatter, thereby ensuring the quality of subsequent trimming.

[0020] A high-precision copper strip trimming device of the utility model also includes a first support roller 5, a second support roller 6, a third support roller 7 and a fourth support roller 8. The first support roller 5 is arranged on the front side of the leveling roller 1, the second support roller 6 is arranged between the leveling roller 1 and the first mold mechanism 2, the third support roller 7 is arranged between the first mold mechanism 2 and the second mold mechanism 3, and the fourth support roller 8 is arranged between the second mold mechanism 3 and the rubber roller 4.

[0021] like Figure 2 As shown, the adjustable mold mechanism includes a mechanism bracket 9, a first guide rail 10, a second guide rail 11, a first trimming mold 12, a first trimming mold bracket 13, a second trimming mold 14, a second trimming mold bracket 15, a first screw 16, a first hand wheel 17, a second screw 18 and a second hand wheel 19. The first guide rail 10 and the second guide rail 11 are arranged perpendicular to the running direction of the copper strip, and the two ends of the first guide rail 10 and the second guide rail 11 are respectively fixed on the mechanism bracket 9 on both sides. The first trimming mold 12 is rotatably arranged on the first trimming mold bracket 13, and the two sides of the first trimming mold bracket 13 are arranged on the first guide rail 10 and the second guide rail 11 through walking rollers 20. The second trimming mold 14 is rotatably arranged on the second trimming mold bracket 15, and the two sides of the second trimming mold bracket 15 are arranged on the first guide rail 10 and the second guide rail 11 through walking rollers 20. In this embodiment, the first guide rail 10 and the second guide rail 11 are cylindrical rod bodies, and the walking roller 20 is provided with a semicircular annular groove matching the diameter of the first guide rail 10 and the second guide rail 11. The walking roller 20 is clamped on the first guide rail 10 and the second guide rail 11 through the annular groove and rolls along the first guide roller 10 and the second guide rail 11.

[0022] The two ends of the first screw 16 are rotatably arranged on the two side mechanism brackets 9, the first hand wheel 17 is fixed at one end of the first screw 16, the lower end of the first trimming mold bracket 13 is sleeved on the outside of the first screw 16 and is threadedly connected to the first screw 16, the second screw 18 is sleeved on the outside of the first screw 16 and the second screw 18 is rotatably arranged on the mechanism bracket 9, the second hand wheel 19 is fixed at one end of the second screw 18, and the lower end of the second trimming mold bracket 15 is sleeved on the outside of the second screw 18 and is threadedly connected to the second screw 18. In this embodiment, the second screw 18 is a hollow tubular structure, the second screw 18 is sleeved on the outside of the first screw 16, the second screw 18 is coaxially arranged with the first screw 16, and the inner diameter of the second screw 18 is larger than the outer diameter of the first screw 16, and the two do not interfere with each other. Therefore, one end of the first screw 16 is actually rotatably arranged on the inner side of the second screw 18 through a bearing, and does not directly contact the mechanism bracket 9. The above connection description is only a description of a relative position relationship. Since the second screw 18 is sleeved on the outside of the first screw 16, the position of the first trimming die 12 is adjusted by the first screw 16, and the position of the second trimming die 14 is adjusted by the second screw 18. The length of the second screw 18 directly determines the adjustment range of the first trimming die 12 and the second trimming die 14. Therefore, the length of the second screw 18 needs to be reasonably set according to the width specification of the copper strip to be produced.

[0023] The first trimming die 12 and the second trimming die 14 are vertically arranged cylindrical rollers, and the side of the cylindrical roller is provided with a trimming groove, which is composed of a semicircular bottom, a first opening angle A and a second opening angle B. The outer side of the trimming groove is provided with an arc chamfer to facilitate the threading of the copper strip at the beginning of production.

[0024] like Figure 3 As shown, in the first mold mechanism 2 and the second mold mechanism 3, the first opening angle A of the trimming groove is 15°. The radius of the semicircular bottom of the trimming groove in the first mold mechanism 2 is 0.6 mm, and the second opening angle B of the trimming groove in the first mold mechanism is 45°. The radius of the semicircular bottom of the trimming groove in the second mold mechanism 3 is 0.4 mm, and the second opening angle B of the trimming groove in the second mold mechanism is 40°. The trimming groove of the first mold mechanism 2 pre-trims both sides of the transformer copper strip, and then the trimming groove of the second mold mechanism 3 finely trims both sides of the transformer copper strip to improve the trimming quality of the copper strip.

[0025] When a high-precision copper strip trimming device of the utility model is used, when a single copper strip is produced, the first handwheels 17 in the adjustable mold mechanisms on both sides of the first mold mechanism 2 and the second mold mechanism 3 are adjusted respectively, so as to adjust the spacing between the two first trimming molds 12 in the adjustable mold mechanisms on both sides to match the width of the single copper strip, and perform trimming of the transformer copper strip. When two copper strips are produced, the two first trimming molds 12 in the adjustable mold mechanisms on both sides are first adjusted, and then the second handwheels 19 in the two adjustable mold mechanisms are respectively adjusted, and the spacing between the first trimming molds 12 and the second trimming molds 14 in the two groups of adjustable mold mechanisms are respectively adjusted to match the width of the two copper strips. When three copper strips are produced, the spacing between the two first trimming molds 12 in the two groups of adjustable mold mechanisms is first adjusted to match the width of the middle copper strip, and then the positions of the second trimming molds 14 in the two groups of adjustable mold mechanisms are respectively adjusted, so that the spacing between the first trimming molds 12 and the second trimming molds 14 in the two groups of adjustable mold mechanisms are respectively matched with the width of the two outer copper strips. The utility model adopts a very compact and reasonable adjustment structure, realizes that the trimming dies on both sides can be adjusted respectively, can be adjusted according to the number of copper strips produced, and improves the production efficiency of the equipment.

[0026] The utility model provides a high-precision copper strip trimming device, which improves the trimming efficiency of the transformer copper strip, shortens the product delivery cycle, and simultaneously improves the edge quality, plate shape quality and flatness of the transformer copper strip, thereby improving the product quality of the transformer copper strip; the utility model realizes the semi-automatic trimming of the transformer copper strip, can flexibly configure the position of the trimming mold, thereby realizing the simultaneous slitting and trimming of a single, two or three transformer copper strips, thereby improving the production efficiency and reducing the production cost.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. A high-precision copper strip trimming device, characterized in that: It comprises a leveling roller, a first mold mechanism, a second mold mechanism and a rubber roller which are arranged in sequence along the running direction of the copper belt. The first mold mechanism and the second mold mechanism respectively comprise two groups of symmetrically arranged adjustable mold mechanisms. Each group of adjustable mold mechanisms comprises two trimming molds, and each trimming mold can be adjusted perpendicular to the running direction of the copper belt.

2. A high-precision copper strip trimming device according to claim 1, characterized in that: The adjustable mold mechanism comprises a mechanism support, a first guide rail, a second guide rail, a first trimming mold, a first trimming mold support, a second trimming mold, a second trimming mold support, a first screw, a first hand wheel, a second screw and a second hand wheel. The first guide rail and the second guide rail are arranged perpendicular to the running direction of the copper strip. The two ends of the first guide rail and the second guide rail are respectively fixed to the mechanism supports on both sides. The first trimming mold is rotatably arranged on the first trimming mold support. The two sides of the first trimming mold support are arranged on the first guide rail and the second guide rail through walking rollers. The second trimming mold is rotatably arranged On the second trimming mold bracket, both sides of the second trimming mold bracket are arranged on the first guide rail and the second guide rail through walking rollers, both ends of the first screw are rotatably arranged on the mechanism brackets on both sides, the first hand wheel is fixed to one end of the first screw, the lower end of the first trimming mold bracket is sleeved on the outside of the first screw and is threadedly connected to the first screw, the second screw is sleeved on the outside of the first screw and the second screw is rotatably arranged on the mechanism bracket, the second hand wheel is fixed to one end of the second screw, and the lower end of the second trimming mold bracket is sleeved on the outside of the second screw and is threadedly connected to the second screw.

3. A high-precision copper strip trimming device according to claim 2, characterized in that: The first trimming die and the second trimming die are vertically arranged cylindrical rollers, and a trimming groove is opened on the side of the cylindrical roller. The trimming groove consists of a semicircular bottom, a first opening inclination angle A and a second opening inclination angle B.

4. A high-precision copper strip trimming device according to claim 3, characterized in that: The outer side of the trimming groove is provided with an arc-shaped chamfer.

5. The high-precision copper strip trimming device according to claim 3, characterized in that: In the first mold mechanism and the second mold mechanism, the first opening inclination angle A of the trimming groove is 15°.

6. A high-precision copper strip trimming device according to claim 5, characterized in that: The radius of the semicircular bottom of the trimming groove in the first mold mechanism is 0.6 mm, and the angle of the second opening inclination angle B of the trimming groove in the first mold mechanism is 45°.

7. A high-precision copper strip trimming device according to claim 6, characterized in that: The radius of the semicircular bottom of the trimming groove in the second mold mechanism is 0.4 mm, and the angle of the second opening inclination angle B of the trimming groove in the second mold mechanism is 40°.

8. The high-precision copper strip trimming device according to claim 1, characterized in that: It also includes a first support roller, a second support roller, a third support roller and a fourth support roller. The first support roller is arranged on the front side of the leveling roller, the second support roller is arranged between the leveling roller and the first mold mechanism, the third support roller is arranged between the first mold mechanism and the second mold mechanism, and the fourth support roller is arranged between the second mold mechanism and the rubber roller.

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