A disc shear mechanism for a tension and leveling machine

Abstract

The present invention discloses a circular shear mechanism of a straightening machine, the circular shear mechanism comprises a fixed seat, an upper knife is arranged at the upper end of the fixed seat, an upper knife shaft is connected to the center of the upper knife, a lower knife is arranged at the lower end of the fixed seat, a lower knife shaft is connected to the center of the lower knife, both the upper knife shaft and the lower knife shaft are provided with a reference part and a spacer body; the reference part is arranged inside the spacer body; the spacer body is arranged between the upper knife / lower knife and the reference part, a groove body is arranged at the contact end face of the spacer body and the upper knife / lower knife, a plurality of screw holes are arranged in an annular shape at the groove body, and an adjustment bolt is arranged in the screw hole; a washer is arranged inside the groove body, and the washer separates the adjustment bolt from the side of the upper knife / lower knife. The present invention realizes the adjustability of the end face parallelism after the knife is equipped, and solves the technical problems of poor product quality, high scrap rate, easy damage of the circular knife and high cost in the existing strip steel processing process.

Description

Technical Field

[0001] The invention relates to a disc shear mechanism of a tension and leveling machine, belonging to the technical field of strip steel processing equipment. Background Art

[0002] The stretching and bending straightening unit is referred to as "stretching and straightening machine". It is a straightening equipment developed to meet the high requirements for the straightness of strip materials. It combines the advantages of roller straightening machine and stretching straightening machine. Its working characteristic is that under the combined action of tension roller stretching and bending roller continuous alternating and repeated bending, the strip material produces plastic extension to obtain plate and strip straightening. It can eliminate the three-dimensional shape defects of the strip, such as scooping, edge wave shape and sickle bend, and significantly improve the plate shape quality.

[0003] The steel spacer is one of the key parts of the disc shear, and it is also a part that requires very high precision. The existing disc shear steel spacer is a simple precision part. After the equipment disc cutter is installed, the end face parallelism cannot be adjusted, and the end face runout of the disc cutter cannot be adjusted. Since most of the cantilever shear disc cutters are ground on the end face in a single piece, the grinding accuracy is different each time, and the cutter shaft will have more or less errors in the reference surface after long-term use. This causes the end face runout of the installed disc cutter to exceed the standard each time, and the gap on the rear side is uneven when the disc cutter rotates, sometimes large and sometimes small.

[0004] The uniformity of the side gap directly affects the shearing quality, blade life and restricts production efficiency. The side with a large gap will have burrs, ridges, or edge waves on the edge of the strip cut, while the side with a small gap will have problems such as blade gnawing, blade collapse, notches on the edge of the steel strip, too much or too little meat, or burrs. Every time the above problems occur, the machine must be stopped to replace the blade, which seriously affects production efficiency and causes cost waste. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a disc shear mechanism for a straightening machine, which realizes the adjustability of the end face parallelism after the knife is equipped, and solves the technical problems of poor product quality, high scrap rate, easy damage of the disc knife and high cost in the prior strip steel processing process.

[0006] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: a disc shear mechanism of a tensioning and straightening machine, the disc shear mechanism includes a fixed seat, an upper knife is provided at the upper end of the fixed seat, the center of the upper knife is connected to an upper knife shaft, a lower knife is provided at the lower end of the fixed seat, the center of the lower knife is connected to a lower knife shaft, the upper knife shaft and the lower knife shaft are both provided with a reference portion and a spacer body; the reference portion is arranged on the inside of the spacer body; the spacer body is arranged between the upper knife / lower knife and the reference portion, a groove body is provided on the contact end surface of the spacer body and the upper knife / lower knife, a plurality of screw holes are provided in an annular shape on the spacer body at the groove body, and an adjustment bolt is provided in the screw hole; a gasket is provided inside the groove body, and the gasket spaces the adjustment bolt from the side of the upper knife / lower knife.

[0007] In the above-mentioned circular shear mechanism of a tension and leveling machine, the upper knife and the lower knife are staggered front and back, and the blades of the upper knife and the lower knife overlap to form a scissor mouth. The circular shear mechanism adopts a double-sided cantilever shear design, with an upper knife and a lower knife respectively arranged on both sides, and the blades of the upper knife and the lower knife are staggered front and back, and the blades of the upper knife and the lower knife overlap to form a scissor mouth to process the strip steel.

[0008] In the above-mentioned circular shear mechanism of a tension and straightening machine, the outer diameter of the reference part is smaller than the outer diameter of the spacer body, and the screw hole is opened on the spacer body not covered by the reference part. The outer diameter of the reference part is smaller than that of the spacer body, so that the edge of the spacer body is exposed to the outside, and the screw hole is opened in the exposed area of ​​the spacer body, so that the parallelism of the upper blade / lower blade end surface can be adjusted by adjusting the bolt.

[0009] In the above-mentioned straightening machine disc shear mechanism, the trough body is annular, the washer is annular, the thickness of the washer is smaller than the thickness of the trough body, and the outer diameter of the washer is smaller than the outer diameter of the trough body. The outermost circle of the end surface of the spacer body in contact with the upper knife / lower knife is buckled out of the trough body, and the washer installed in the trough body is used to isolate the contact between the adjusting bolt and the upper knife / lower knife.

[0010] In the above-mentioned straightening machine circular shear mechanism, an outer shear body is provided on the outer side of the upper blade / lower blade, and the outer shear body is connected to the upper blade shaft / lower blade shaft. The outer shear body is used to limit and fix the outer end surface of the upper blade / lower blade.

[0011] Furthermore, the outer end of the upper cutter shaft / lower cutter shaft is connected with a hydraulic nut, and the hydraulic nut is located outside the outer casing. The hydraulic nut is arranged at the outer end of the upper cutter shaft / lower cutter shaft to press and fix the inner outer casing, the reference part and the spacer body.

[0012] In the above-mentioned circular shear mechanism of a tension and straightening machine, the trough body is arranged outside the spacer body, and the trough body is formed by extending the outer edge of the trough body toward the inside.

[0013] In the above-mentioned straightening machine disc shear mechanism, the outer diameter of the spacer body is smaller than the outer diameter of the upper knife / lower knife. The outer diameter of the spacer body is small, so that a certain gap is reserved between the spacer bodies to prevent the spacer bodies from colliding and rubbing during the operation of the straightening machine.

[0014] In the above-mentioned straightening machine disc shear mechanism, after the blade of the upper knife / lower knife is worn, the parallelism of the upper knife / lower knife end face is adjusted by adjusting the bolt. When the blade of the upper knife / lower knife is worn, the parallelism of the upper knife / lower knife end face changes, and a large error will be generated at this time. The parallelism of the upper knife / lower knife end face can be adjusted by adjusting the tightness of the adjusting bolt.

[0015] In the above-mentioned straightening machine disc shear mechanism, after the reference part is worn, the parallelism of the upper blade / lower blade end surface is adjusted by adjusting the bolt. When the reference part is used for too long, the reference part is worn or a large error occurs, the parallelism of the upper blade / lower blade end surface can be adjusted by adjusting the tightness of the adjusting bolt.

[0016] The beneficial effects of the present invention are: solving the technical problems of poor product quality, high scrap rate, easy damage of the upper blade / lower blade, and high cost in the existing strip processing process, and realizing the adjustability of the end face parallelism after the upper blade / lower blade is equipped. The parallelism of the blade end face is partially adjusted by adjusting the bolt to ensure that the upper and lower blade side clearances are always the same when the upper and lower blade shafts rotate, thus avoiding the problems of burrs, ridges, edge waves, gnawing blades, broken blades, gaps, and more or less meat when adjusting the clearances. Moreover, each time the upper blade / lower blade is replaced, it can be used until normal wear is eliminated before being removed from the machine, thus preventing abnormal damage to the upper blade / lower blade, reducing the frequency of blade changes, and making production smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the disc shear mechanism of the tension and leveling machine;

[0018] Figure 2 It is a top view of the spacer body of the disc shear mechanism of the tension and straightening machine;

[0019] Figure 3 It is a schematic cross-sectional view of the spacer body along the central axis;

[0020] Figure 4 Schematic diagram of the gasket structure. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a circular shear mechanism of a straightening machine, the circular shear mechanism includes a fixed seat 1, an upper knife 2 is provided at the upper end of the fixed seat 1, an upper knife shaft 3 is connected to the center of the upper knife 2, a lower knife 4 is provided at the lower end of the fixed seat 1, a lower knife shaft 5 is connected to the center of the lower knife 4, the upper knife shaft 3 and the lower knife shaft 5 are both provided with a reference portion 6 and a spacer body 7; the reference portion 6 is arranged on the inner side of the spacer body 7; the spacer body 7 is arranged between the upper knife 2 / lower knife 4 and the reference portion 6, a groove body 8 is provided on the contact end surface of the spacer body 7 and the upper knife 2 / lower knife 4, the spacer body 7 is provided with a plurality of screw holes 9 in an annular shape at the groove body 8, and an adjusting bolt 10 is provided in the screw hole 9; a washer 11 is provided inside the groove body 8, and the washer 11 separates the adjusting bolt 10 from the side of the upper knife 2 / lower knife 4.

[0024] In one embodiment of the circular shear mechanism of the tension and leveling machine, the upper knife 2 and the lower knife 4 are staggered front and back, and the blades of the upper knife 2 and the lower knife 4 overlap to form a scissor mouth. The circular shear mechanism adopts a double-sided cantilever shear design, with an upper knife 2 and a lower knife 4 respectively provided on both sides, and the blades of the upper knife 2 and the lower knife 4 are staggered front and back, and the blades of the upper knife 2 and the lower knife 4 overlap to form a scissor mouth to process the strip steel.

[0025] In one embodiment of the circular shear mechanism of the tension and straightening machine, the outer diameter of the reference portion 6 is smaller than the outer diameter of the spacer body 7, and the screw hole 9 is opened on the spacer body 7 not covered by the reference portion 6. The outer diameter of the reference portion 6 is smaller than that of the spacer body 7, so that the edge of the spacer body 7 is exposed to the outside, and the screw hole 9 is opened in the exposed area of ​​the spacer body 7, so that the parallelism of the end surface of the upper knife 2 / lower knife 4 can be adjusted by adjusting the bolt 10.

[0026] In one embodiment of the circular shear mechanism of the tension and leveling machine, the groove body 8 is in a circular ring shape, the washer 11 is in a circular ring shape, the thickness of the washer 11 is less than the thickness of the groove body 8, and the outer diameter of the washer 11 is less than the outer diameter of the groove body 8. The outermost circle of the end surface of the spacer body 7 in contact with the upper knife 2 / lower knife 4 buckles out of the groove body 8, and the washer 11 installed in the groove body 8 is used to isolate the contact between the adjusting bolt 10 and the upper knife 2 / lower knife 4.

[0027] In one embodiment of the circular shear mechanism of the tension and straightening machine, an outer sheath 12 is provided on the outer side of the upper knife 2 / lower knife 4, and the outer sheath 12 is connected to the upper knife shaft 3 / lower knife shaft 5. The outer sheath 12 is used to limit and fix the outer end surface of the upper knife 2 / lower knife 4. A hydraulic nut 13 is connected to the outer end of the upper knife shaft 3 / lower knife shaft 5, and the hydraulic nut 13 is located on the outer side of the outer sheath 12. The hydraulic nut 13 is arranged on the outer end of the upper knife shaft 3 / lower knife shaft 5 to press and fix the inner outer sheath 12, the reference part 6 and the spacer body 7.

[0028] In one embodiment of the circular shear mechanism of the straightening machine, the trough body 8 is arranged outside the spacer body 7, and the trough body 8 is formed by extending the outer edge of the trough body inward. The outer diameter of the spacer body 7 is smaller than the outer diameter of the upper knife 2 / lower knife 4. The outer diameter of the spacer body 7 is small, so that a certain gap is reserved between the spacer bodies 7 to prevent the spacer bodies 7 from colliding and rubbing during the operation of the straightening machine. After the blade of the upper knife 2 / lower knife 4 is worn, the parallelism of the end face of the upper knife 2 / lower knife 4 is adjusted by adjusting the bolt 10. When the blade of the upper knife 2 / lower knife 4 is worn, the parallelism of the end face of the upper knife 2 / lower knife 4 changes, and a large error will be generated at this time. The parallelism of the end face of the upper knife 2 / lower knife 4 can be adjusted by adjusting the tightness of the adjusting bolt 10. After the reference part 6 is worn, the parallelism of the end face of the upper knife 2 / lower knife 4 is adjusted by adjusting the bolt 10. When the reference part 6 is used for too long, it is worn or has a large error. Similarly, the parallelism of the end faces of the upper blade 2 / lower blade 4 can be adjusted by adjusting the tightness of the adjustment bolt 10 .

[0029] In one embodiment of the disc shear mechanism of the straightening machine, 10 1 / 4 screw holes 9 with a diameter of 10 mm are evenly arranged on the outer circle of the spacer body 7, and each screw hole 9 is equipped with a 40 mm φ10 mm long hexagonal screw. The outermost circle of the contact end face of the spacer body 7 and the upper knife 2 / lower knife 4 is buckled with a 1.5×15 mm groove 8, and a 1×14.5 mm washer 11 is installed in the groove 8 to isolate the contact between the adjusting bolt 10 and the disc knife, which solves the technical problems of poor product quality, high scrap rate, easy damage of the upper knife 2 / lower knife 4 and high cost in the existing strip processing process, and realizes the adjustability of the end face parallelism after the upper knife 2 / lower knife 4 is equipped. The parallelism of the blade end faces can be partially adjusted using the adjusting bolts to ensure that the clearance between the upper and lower blade sides is always the same when the upper and lower blade shafts rotate. This avoids burrs, ridges, edge waves, blade gnawing, blade breakage, notches, and more or less meat when adjusting the clearance. Moreover, each time the upper / lower blade is replaced, it can be used until normal wear occurs before being removed from the machine, thus preventing abnormal damage to the upper / lower blade, reducing the frequency of tool change, and making production smoother.

[0030] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A circular shear mechanism of a tension and leveling machine, the circular shear mechanism comprising a fixed seat, an upper knife is provided at the upper end of the fixed seat, the center of the upper knife is connected to the upper knife shaft, a lower knife is provided at the lower end of the fixed seat, the center of the lower knife is connected to the lower knife shaft, characterized in that: The upper blade shaft and the lower blade shaft are both provided with a reference portion and a spacer body; the reference portion is arranged inside the spacer body; the spacer body is arranged between the upper blade / lower blade and the reference portion, the contact end surface of the spacer body with the upper blade / lower blade is provided with a groove body, the spacer body is provided with a plurality of screw holes in an annular shape at the groove body, and an adjustment bolt is arranged in the screw hole; a washer is arranged inside the groove body, and the washer separates the adjustment bolt from the side of the upper blade / lower blade; The groove body is in a circular ring shape, the gasket is in a circular ring shape, the thickness of the gasket is smaller than the thickness of the groove body, and the outer diameter of the gasket is smaller than the outer diameter of the groove body; The groove body is arranged outside the spacer body, and the groove body is formed by extending the outer edge of the groove body toward the inside; After the blade of the upper knife / lower knife is worn, the parallelism of the end surface of the upper knife / lower knife is adjusted by adjusting the bolt; After the reference portion is worn, the parallelism of the upper blade / lower blade end faces is adjusted by adjusting the bolts.

2. A circular shear mechanism for a tension and leveling machine according to claim 1, characterized in that: The upper knife and the lower knife are staggered front and back, and the blades of the upper knife and the lower knife overlap to form a scissor edge.

3. The circular shear mechanism of a tension and leveling machine according to claim 1, characterized in that: The outer diameter of the reference portion is smaller than the outer diameter of the spacer body, and the screw hole is opened on the spacer body not covered by the reference portion.

4. The circular shear mechanism of a tension and leveling machine according to claim 1, characterized in that: An outer sleeve is provided on the outer side of the upper knife / lower knife, and the outer sleeve is connected to the upper knife shaft / lower knife shaft.

5. The circular shear mechanism of a tension and leveling machine according to claim 4, characterized in that: The outer end of the upper cutter shaft / lower cutter shaft is connected with a hydraulic nut, and the hydraulic nut is located outside the outer casing.

6. The circular shear mechanism of a tension and leveling machine according to claim 1, characterized in that: The outer diameter of the spacer body is smaller than the outer diameter of the upper knife / lower knife.

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