Special-shaped copper strip deburring and shearing device

Abstract

A special-shaped copper strip deburring and shearing device comprises a base, special-shaped positioning guide wheels, a disc shearing mechanism, a pressing roller, a burr grinding mechanism, a guide roller and fixing plates, the fixing plates are arranged on the two sides of the base, and the two special-shaped positioning guide wheels are arranged at the front ends of the two fixing plates correspondingly; a disc shearing mechanism and a pressing roller are sequentially arranged behind the special-shaped positioning guide wheel and fixed to the fixing plate, the burr grinding mechanism is located below the pressing roller and fixed to the fixing plate, and a guide roller is arranged at the tail end of the fixing plate. The device is easy to operate and convenient to use, produced strips have the advantages of being free of burrs and curled edges and the like, product scrapping caused by the burrs and the curled edges of the strips can be greatly reduced, the yield of the strips is increased, and the quality meets the use requirements of customers.

Description

Technical Field

[0001] The utility model belongs to the field of rolling of non-ferrous metal profiled strips, and particularly relates to a deburring and shearing device for profiled copper strips. Background Art

[0002] Due to excellent electrical and thermal conductivity and special cross-sectional shapes, profiled copper alloy strips are key base materials for manufacturing lead frames, and are widely used in fields such as IGBTs and discrete devices. As the electronic market gradually develops towards miniaturization, safety, and functional diversification, the requirements for the required base materials are also gradually increasing. Generally, lead frames are mainly produced by stamping processes. Since high-precision punching presses have high requirements for the cutting quality of products during stamping, defects such as burrs and curled edges are not allowed on the edges of the strips. The main reasons for the generation of strip burr size and curled edge defects are controlled by the gap between the upper and lower knives of the slitting machine and the cooperation of the knife pads. However, the adjustment of the upper and lower tool gaps for strip shearing has high requirements and is difficult, which is not convenient for production personnel to operate, and it is difficult to control the burr size of the sheared strip. Content of the Utility Model

[0003] The purpose of the utility model is to provide a deburring and shearing device for profiled copper strips, which includes a base, profiled positioning guide wheels, a circular disk shearing mechanism, pressure rollers, a burr grinding mechanism, guide rollers, and fixing plates. Fixing plates are arranged on both sides of the base. Two groups of profiled positioning guide wheels are respectively arranged at the front ends of the two fixing plates. A circular disk shearing mechanism and pressure rollers are successively arranged behind the profiled positioning guide wheels and are fixed to the fixing plates. The burr grinding mechanism is located below the pressure rollers and is fixed to the fixing plates. Guide rollers are arranged at the ends of the fixing plates.

[0004] The profiled positioning guide wheels include upper and lower rollers. The upper roller is a profiled roller that matches the cross-section of the copper strip; the lower roller is a flat roller for supporting the plane of the copper strip. Among them, when installing the profiled positioning guide wheels, the end of the guide wheel shaft is connected to the fixing plate.

[0005] The circular disk shearing mechanism includes an upper knife shaft and a lower knife shaft. A profiled rubber isolation ring is arranged on the upper knife shaft, and a flat rubber isolation ring is arranged on the lower knife shaft. The upper knives on the upper knife shaft are placed on both sides of the profiled rubber isolation ring, and the lower knives on the lower knife shaft are located on both sides of the flat rubber isolation ring.

[0006] The outer diameter of the upper knife is 2 - 5 mm larger than the outer diameter of the profiled rubber isolation ring, the outer diameter of the lower knife is 2 - 5 mm smaller than the outer diameter of the rubber isolation ring, the offset between the inner side of the upper knife and the outer side of the lower knife is 1 - 3 mm, and the overlapping amount of the upper knife and the lower knife is 1 - 2 mm.

[0007] The burr grinding mechanism includes a motor and two symmetrically arranged polishing tables. The motor is movably connected to the central shaft of the polishing table through a belt.

[0008] The utility model is simple to operate and convenient to use. The strip produced has characteristics such as no burrs and curled edges, which can greatly reduce the product scrapping caused by burrs and curled edges of the strip, improve the qualified rate of the strip, and the quality meets the usage requirements of customers. Description of the Drawings

[0009] The following further details the specific embodiments of the utility model in conjunction with the drawings.

[0010] Figure 1 It is a schematic structural diagram of the utility model.

[0011] Figure 2 It is the front view of the utility model.

[0012] Figure 3 It is the top view of the utility model.

[0013] Figure 4 It is a partial schematic diagram of the disk shearing mechanism of the utility model.

[0014] In the figure: 1 - base; 2 - special-shaped positioning guide wheel; 3 - disk shearing mechanism, 3-1 - upper tool shaft, 3-2 - lower tool shaft, 3-3 - special-shaped rubber isolation ring, 3-4 - flat rubber isolation ring, 3-5 - lower tool, 3-6 - upper tool; 4 - pressure roller; 5 - burr grinding mechanism; 6 - motor; 7 - guide roller; 8 - fixing plate; 9 - polishing table. Specific Embodiments

[0015] Such as Figures 1-4 A special-shaped copper strip deburring and shearing device, including a base 1, special-shaped positioning guide wheels 2, a disk shearing mechanism 3, a pressure roller 4, a burr grinding mechanism 5, a guide roller 7 and a fixing plate 8. Fixing plates 8 are provided on both sides of the base 1. Two groups of special-shaped positioning guide wheels 2 are respectively provided at the front ends of the two fixing plates 8. A disk shearing mechanism 3 and a pressure roller 4 are successively arranged behind the special-shaped positioning guide wheels 2 and fixed to the fixing plate 8. The burr grinding mechanism 5 is located below the pressure roller 4 and fixed to the fixing plate 8. A guide roller 7 is provided at the end of the fixing plate 8.

[0016] The special-shaped positioning guide wheel 2 includes an upper roller and a lower roller. The upper roller is a special-shaped roller, and the lower roller is a flat roller.

[0017] The disk shearing mechanism 3 includes an upper tool shaft 3-1 and a lower tool shaft 3-2. A special-shaped rubber isolation ring 3-3 is provided on the upper tool shaft 3-1, and a flat rubber isolation ring 3-4 is provided on the lower tool shaft 3-2. The upper tool 3-6 on the upper tool shaft 3-1 is placed on both sides of the special-shaped rubber isolation ring 3-3, and the lower tool 3-5 on the lower tool shaft 3-2 is located on both sides of the flat rubber isolation ring 3-4.

[0018] The outer diameter of the upper tool 3-6 is 2-5 mm larger than that of the special-shaped rubber isolation ring 3-3, and the outer diameter of the lower tool 3-5 is 2-5 mm smaller than that of the rubber isolation ring. The dislocation amount between the inner side of the upper tool 3-6 and the outer side of the lower tool 3-5 is 1-3 mm, and the overlapping amount between the upper tool 3-6 and the lower tool 3-5 is 1-2 mm.

[0019] The burr grinding mechanism 5 includes a motor 6 and two symmetrically arranged polishing tables 9. The motor 6 is movably connected to the central axis of the polishing table 9 through a belt.

[0020] During use, select the special-shaped positioning guide wheel 2 that matches the special-shaped copper strip specification, install the two groups of special-shaped positioning guide wheels 2 on the fixed plate 8 in sequence, and adjust the straightness of the front and rear special-shaped positioning guide wheels 2; then, install the disc shearing mechanism 3 on the fixed plate 8, and adjust the upper and lower tool clearances according to the thickness of the strip. After the above work is ready, slowly thread the copper strip into the special-shaped positioning guide wheel position 2. After the head of the copper strip reaches the disc shearing mechanism 3 and is successfully sheared, thread the sheared copper strip through the burr grinding mechanism 5 and the guide roller 7 in sequence, and finally fix the copper strip on the coiling machine to complete the shearing and threading work. During normal operation, start the motor 6 below the grinding mechanism to make the polishing table rotate, and at the same time manually adjust the height of the pressure roller 4 to ensure that the copper strip does not jump during the shearing process. Complete the burr grinding process of the copper strip.

[0021] The above is the preferred embodiment of the present invention. Those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiment. Therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or variation made by those skilled in the art on the basis of the present invention belongs to the protection scope of the present invention.

Claims

1. A deburring and shearing device for special-shaped copper strips, characterized in that: The invention comprises a base (1), a special-shaped positioning guide wheel (2), a disc shearing mechanism (3), a pressure roller (4), a burr grinding mechanism (5), a guide roller (7) and a fixed plate (8), wherein the base (1) is provided with fixed plates (8) on both sides, two groups of special-shaped positioning guide wheels (2) are provided at the front ends of the two fixed plates (8), the disc shearing mechanism (3) and the pressure roller (4) are provided behind the special-shaped positioning guide wheels (2) in sequence and are fixed to the fixed plate (8), the burr grinding mechanism (5) is located below the pressure roller (4) and is fixed to the fixed plate (8), and the guide roller (7) is provided at the end of the fixed plate (8).

2. The deburring and shearing device for special-shaped copper strip according to claim 1, characterized in that: The special-shaped positioning guide wheel (2) comprises an upper roller and a lower roller, the upper roller is a profile roller, and the lower roller is a flat roller.

3. The deburring and shearing device for special-shaped copper strip according to claim 1, characterized in that: The disc shearing mechanism (3) comprises an upper cutter shaft (3-1) and a lower cutter shaft (3-2); the upper cutter shaft (3-1) is provided with a special-shaped rubber isolation ring (3-3); the lower cutter shaft (3-2) is provided with a plane rubber isolation ring (3-4); the upper cutter (3-6) of the upper cutter shaft (3-1) is arranged on both sides of the special-shaped rubber isolation ring (3-3); and the lower cutter (3-5) of the lower cutter shaft (3-2) is arranged on both sides of the plane rubber isolation ring (3-4).

4. The deburring and shearing device for special-shaped copper strip according to claim 3, characterized in that: The outer diameter of the upper cutter (3-6) is 2-5 mm larger than the outer diameter of the special-shaped rubber isolation ring (3-3), the outer diameter of the lower cutter (3-5) is 2-5 mm smaller than the outer diameter of the rubber isolation ring, the inner side of the upper cutter (3-6) and the outer side of the lower cutter (3-5) are misaligned by 1-3 mm, and the upper cutter (3-6) and the lower cutter (3-5) overlap by 1-2 mm.

5. The deburring and shearing device for special-shaped copper strip according to claim 1, characterized in that: The burr grinding mechanism (5) comprises a motor (6) and two symmetrically arranged polishing tables (9), wherein the motor (6) is movably connected to the central axis of the polishing table (9) via a belt.

Images