Transformer core silicon steel large roll slitting device

Abstract

The utility model belongs to the field of silicon steel roll slitting equipment, concretely relates to a transformer core silicon steel big roll slitting device, is arranged between unwinding machine and winding machine, the slitting device includes cutting knife pair of rollers, the key lies in, a group of upper slitting knife and lower slitting knife are arranged in array on cutting knife pair of rollers, upper slitting knife, lower slitting knife are all single -sided blade, the blade edge of upper slitting knife is consistent in direction, the blade edge of lower slitting knife is consistent in direction, and the back of upper slitting knife, lower slitting knife is back to back and is matched and set up in scissors formula, this slitting device can effectively avoid the bending deformation of narrow plate material after slitting, provides good basis for the flatness of silicon steel sheet product.

Description

Technical Field

[0001] This utility model belongs to the field of silicon steel coil slitting equipment, specifically relating to a large silicon steel coil slitting device for transformer cores. Background Technology

[0002] The silicon steel sheet slitting process involves unwinding a large coil of silicon steel into a sheet, adjusting the distance between the cutters on the slitting shaft according to the required width, and then slitting the sheet into narrow sheets. These sheets continue to be conveyed in the same direction and finally wound up by a winding shaft on the same winding machine into multiple adjacent narrow sheet rolls for punching silicon steel sheets. In existing technology, the cutting edges of adjacent slitting blades on the slitting shaft are typically arranged in a staggered pattern, such as... Figure 5 As shown, after slitting, the narrow plate tends to arch due to the clamping of the beveled edges of the two adjacent slitting blades. The narrow plate bends and deforms, affecting the flatness of the subsequent silicon steel sheet products. In addition, the friction between the edge of the narrow plate and the slitting blade is large, which easily leads to burrs on the edge of the narrow plate. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides a transformer core silicon steel large coil slitting device, which can effectively prevent the narrow plates after slitting from bending and deforming, and provide a good foundation for the flatness of silicon steel sheet products.

[0004] The specific technical solution adopted in this utility model is as follows: A transformer core silicon steel coil slitting device is installed between an unwinding machine and a winding machine. The slitting device includes a pair of cutting rollers. The key feature is that the pair of cutting rollers is equipped with an array of upper and lower slitting blades. Both the upper and lower slitting blades are single-edged, with the cutting edges of the upper and lower slitting blades facing the same direction. The backs of the upper and lower slitting blades are arranged back-to-back in a scissor-like configuration.

[0005] A leveling roller is provided between the cutter roller and the winding machine. The leveling roller is horizontally axially positioned. A straightening roller is provided between the leveling roller and the cutter roller.

[0006] The leveling rollers include a lower roller and an upper roller, with the upper roller having the freedom to adjust its height relative to the lower roller.

[0007] Two sets of leveling rollers are provided between the cutting roller and the winding machine. The two sets of leveling rollers are arranged at different heights. A guide roller is also provided between the leveling roller and the straightening roller.

[0008] The straightening roller is inclined upward on the side adjacent to the beveled edge of the lower slitting knife, and the inclination angle of the straightening roller decreases sequentially along the conveying direction of the sheet material.

[0009] The slitting device also includes a set of blade clamps. The overhanging ends of the blade clamps are respectively inclined to the cutting edge side of the upper slitting blade and the lower slitting blade. The overhanging ends of the blade clamps are respectively fitted onto the upper slitting blade and the lower slitting blade through the clamping gap.

[0010] The beneficial effects of this utility model are: This utility model adopts a technical solution where the cutting edges of the upper and lower slitting blades face the same direction. The width of the channel formed between adjacent slitting blade groups for the narrow sheet material to pass through is consistent. After slitting, the narrow sheet material tends to tilt along the inclined surface of the lower slitting blade. The two sides of the narrow sheet material are not excessively squeezed by the inclined surface of the blade, which can effectively prevent the narrow sheet material from forming an arch shape.

[0011] A leveling roller is installed between the cutter roller and the winding machine. The leveling roller is set horizontally along its axis. A straightening roller is installed between the leveling roller and the cutter roller. The straightening roller supports the narrow sheet material that has just been separated from the upper and lower slitting blades and flexibly straightens the narrow sheet material to avoid stretching or creases caused by directly straightening the narrow sheet material. After being straightened by the straightening roller, the narrow sheet material is conveyed to the leveling roller, which further levels the narrow sheet material. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Sectional view along axis AA; Figure 3 for Figure 1 BB-direction sectional view; Figure 4 This is a schematic diagram of the assembly of the upper slitting blade, the lower slitting blade, and the straightening roller; Figure 5 This is a schematic diagram of the structure of a slitting blade for cutting sheet metal in the prior art; In the attached diagram, 1 is the cutting roller pair, 101 is the upper dividing cutter, 102 is the lower dividing cutter, 2 is the leveling roller pair, 201 is the upper roller, 202 is the lower roller, 3 is the straightening roller, 4 is the guide roller, and 5 is the blade clamp. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Specific implementation examples Figure 1-3As shown, this utility model relates to a transformer core silicon steel large coil slitting device, which is set between the unwinding machine and the winding machine. The slitting device includes a cutting roller 1, on which a set of upper slitting blades 101 and lower slitting blades 102 are arranged in an array. The cutting edges of the upper slitting blades 101 and the lower slitting blades 102 face the same direction. Both the upper slitting blades 101 and the lower slitting blades 102 are single-edged, and the backs of the upper slitting blades 101 and the lower slitting blades 102 are set back to back in a scissor-like configuration. The width of the channel formed between adjacent slitting blade sets for narrow plates to pass through is consistent. The narrow plates after slitting tend to tilt along the inclined surface of the cutting edge of the lower slitting blade 102. The two sides of the narrow plates are not excessively squeezed by the inclined surface of the cutting edge, which can effectively prevent the narrow plates from forming an arched shape.

[0014] A leveling roller 2 is installed between the cutter roller 1 and the winding machine. The leveling roller 2 is horizontally axially positioned. A straightening roller 3 is installed between the leveling roller 2 and the cutter roller 1, with the side of the straightening roller 3 adjacent to the beveled edge of the lower slitting cutter 102 inclined upwards. A set of straightening rollers 3 is installed in the conveying direction of each narrow sheet material. The straightening rollers 3 corresponding to two adjacent narrow sheets are arranged alternately back and forth. Figure 4 As shown, the tilt angle of each set of straightening rollers 3 decreases sequentially along the conveying direction of the narrow plate. Under the action of shearing stress, the narrow plate is slightly tilted. The straightening rollers 3 support the narrow plate that has just detached from the upper slitting blade 101 and the lower slitting blade 102. By using the straightening rollers 3 to extend the distance between the upper slitting blade 101, the lower slitting blade 102 and the leveling rollers 2, the extension distance of the tilted narrow plate is extended. With the help of the metal toughness of the narrow plate itself, it is gradually straightened under the support of the straightening rollers 3, thereby achieving flexible straightening of the narrow plate and avoiding the stretching or creases caused by directly straightening the narrow plate. After being straightened by the straightening rollers 3, the narrow plate is conveyed to the leveling rollers 2, and the leveling rollers 2 further level the narrow plate.

[0015] The leveling roller 2 includes a lower roller 202 and an upper roller 201. The upper roller 201 has the freedom to adjust its height relative to the lower roller 202. Adjusting the gap between the upper roller 201 and the lower roller 202 can accommodate different thicknesses of the board. The upper roller 201 and the lower roller 202 extrude the narrow board in both directions to further level it, thereby improving the flatness of the narrow board.

[0016] Two sets of leveling rollers 2 are installed between the cutter roller 1 and the winding machine. The two sets of leveling rollers 2 are staggered in height. A guide roller 4 is also installed between the leveling roller 2 and the straightening roller 3. The guide roller 4 guides two adjacent narrow plates to be diverted, so that the two adjacent narrow plates are conveyed to the two sets of leveling rollers 2 respectively. After diversion, there is a large gap between the narrow plates, which avoids edge friction caused by deviation in winding speed during subsequent conveying.

[0017] The slitting device also includes a set of blade clamps 5. The overhanging ends of the blade clamps 5 are respectively inclined to the cutting edge sides of the upper slitting blade 101 and the lower slitting blade 102. The overhanging ends of the blade clamps 5 are respectively fitted onto the upper slitting blade 101 and the lower slitting blade 102 through the clamping gap. The overhanging ends of the blade clamps 5 provide support for the side walls of the upper slitting blade 101 and the lower slitting blade 102, ensuring that the cutting edge direction of the upper slitting blade 101 and the lower slitting blade 102 is perpendicular to the material conveying direction, thereby improving the slitting accuracy. At the same time, it disperses the force on the upper slitting blade 101 and the lower slitting blade 102, improving the stability of the upper slitting blade 101 and the lower slitting blade 102, and helping to improve the service life of the upper slitting blade 101 and the lower slitting blade 102.

Claims

1. A transformer core silicon steel coil slitting device, disposed between an unwinding machine and a winding machine, the slitting device comprising a pair of cutting rollers (1), characterized in that: The cutter roller (1) is arrayed with a set of upper cutting blades (101) and lower cutting blades (102). Both the upper cutting blades (101) and the lower cutting blades (102) are single-edged. The cutting edges of the upper cutting blades (101) face the same direction, and the cutting edges of the lower cutting blades (102) face the same direction. The backs of the upper cutting blades (101) and the lower cutting blades (102) are back-to-back in a scissor-like arrangement.

2. The transformer core silicon steel large coil slitting device according to claim 1, characterized in that: A leveling roller (2) is provided between the cutter roller (1) and the winding machine. The leveling roller (2) is set horizontally in the axial direction. A straightening roller (3) is provided between the leveling roller (2) and the cutter roller (1).

3. The transformer core silicon steel large coil slitting device according to claim 2, characterized in that: The leveling roller (2) includes a lower roller (202) and an upper roller (201) that are matched together. The upper roller (201) has the freedom to adjust its height relative to the lower roller (202).

4. The transformer core silicon steel large coil slitting device according to claim 2, characterized in that: Two sets of leveling rollers (2) are provided between the cutter roller (1) and the winding machine. The two sets of leveling rollers (2) are arranged at different heights. A guide roller (4) is also provided between the leveling roller (2) and the straightening roller (3).

5. A transformer core silicon steel large coil slitting device according to claim 2, characterized in that: The straightening roller (3) is inclined upward on the side adjacent to the cutting edge of the lower slitting knife (102), and the inclination angle of the straightening roller (3) decreases sequentially along the conveying direction of the plate.

6. The transformer core silicon steel large coil slitting device according to claim 1, characterized in that: The slitting device also includes a set of blade clamps (5). The overhanging ends of the blade clamps (5) are respectively inclined to the cutting edge side of the upper slitting blade (101) and the lower slitting blade (102). The overhanging ends of the blade clamps (5) are respectively fitted onto the upper slitting blade (101) and the lower slitting blade (102) through the clamping seam.

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