A disc shear apparatus

Abstract

The application discloses a disc shearing device, which comprises a first disc shearing body and a second disc shearing body; the edge of the first disc shearing body is provided with a first shearing blade; the edge of the second disc shearing body is provided with a second shearing blade; the first disc shearing body and the second disc shearing body are arranged along a vertical direction and are staggered in a horizontal direction, so that the first shearing blade and the second shearing blade are aligned in the vertical direction; the edge of the first shearing blade is chamfered to form a first chamfered blade edge; the edge of the second shearing blade is chamfered to form a second chamfered blade edge; the first disc shearing body and the second disc shearing body rotate reversely to shear a shearing object between the first disc shearing body and the second disc shearing body by using the first chamfered blade edge and the second chamfered blade edge. The disc shearing device can improve the quality of the edge of a strip steel, reduce burrs and tearing of the edge of the strip steel, prolong the service life of the disc shearing device and reduce the labor intensity of operators.

Description

Technical Field

[0001] This utility model relates to the technical field of supporting equipment for strip steel production, and more specifically, to a disc shear device. Background Technology

[0002] In the strip steel industry, cold-rolled steel sheets offer superior surface quality, high dimensional accuracy, and excellent mechanical and processing properties, leading to their gradual replacement of hot-rolled steel sheets in numerous sectors such as automobile manufacturing, home appliance production, and construction decoration. To meet the demands of these industries for cold-rolled strip steel of varying widths, precise shearing equipment is required, giving rise to the rotary shears used in cold rolling. These rotary shears are used to cut cold-rolled strip steel to specified widths. With the diversification of the cold-rolled market, edge trimming processes are trending towards diversification of steel grades and pursuit of perfect edge quality. Different steel grades have different characteristics, resulting in varying requirements for shearing processes. Simultaneously, users are demanding increasingly higher edge quality from strip steel, such as burr-free cuts and smooth edges. This necessitates continuous improvements to the structure, tool materials, and process parameters of cold-rolled rotary shears to adapt to these diverse needs.

[0003] Currently, the repair of ordinary material shear blades mainly involves grinding the cut surface of the blade on a machine tool to make it smooth, with the cutting edge at a 90° right angle to the arc surface. Shear blades with a 90° right angle have thin and brittle cutting edges. While they can perform normal shearing when cutting thin materials or ordinary steel grades, they are prone to chipping when producing thick materials (above 2.5mm) or high-strength steel strips (780DP, 980DP), where the steel strips have high hardness and strength. This easily leads to defects such as burrs and gaps on the edges of the strip, affecting user experience. Furthermore, the short service life of shear blades (tools) necessitates frequent blade replacement by operators, resulting in high labor intensity and significant costs. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a disc shearing device that can improve the quality of the sheared edge of thick strip steel, reduce burrs and tears on the edge of thick strip steel, extend the service life of the disc shear, and reduce the labor intensity of operators.

[0005] The present invention provides a disc shear device, comprising a first disc shear body and a second disc shear body;

[0006] The edge of the first disc shear body has a first shear blade;

[0007] The edge of the second disc shear body has a second shear blade;

[0008] The first disc shear body and the second disc shear body are arranged vertically and staggered in the horizontal direction, so that the first shear blade and the second shear blade are aligned in the vertical direction;

[0009] The edge of the first shear blade is chamfered to form a first chamfered cutting edge;

[0010] The edge of the second shear blade is chamfered to form a second chamfered cutting edge;

[0011] The first and second disc shear bodies rotate in opposite directions to cut the object passing between them using the first and second chamfered cutting edges.

[0012] Preferably, in the above-mentioned disc shear device, the chamfer of the edge of the first shear blade is 30° to 45°.

[0013] Preferably, in the above-mentioned disc shear device, the distance between the first chamfered blade and the edge of the first disc shear body is 0.5mm to 1.0mm.

[0014] Preferably, in the above-mentioned disc shear device, the chamfer of the edge of the second shear blade is 30° to 45°.

[0015] Preferably, in the above-mentioned disc shear device, the distance between the second chamfered blade and the edge of the second disc shear body is 0.5mm to 1.0mm.

[0016] Preferably, in the above-mentioned disc shear device, both edges of the first shear blade are chamfered to form a first chamfered cutting edge.

[0017] Preferably, in the above-mentioned disc shearing device, both edges of the second shear blade are chamfered to form a second chamfered cutting edge.

[0018] Preferably, the above-described disc shear device further includes a lubricant supply device facing the first shear blade and the second shear blade, for lubricating the first shear blade and the second shear blade.

[0019] Preferably, in the above-mentioned disc shear device, the lubricant supply device includes a lubricant container and a first pipe and a second pipe communicating with the lubricant container, wherein the end of the first pipe faces the first shear blade, the second pipe faces the second shear blade, and both the first pipe and the second pipe are further provided with a switch device for controlling the opening or closing of the first pipe and the second pipe respectively.

[0020] Preferably, in the above-mentioned disc shear device, both the first pipe and the second pipe are equipped with filter screens to prevent dust or foreign objects from entering the first shear blade and the second shear blade along with the lubricant.

[0021] As can be seen from the above technical solution, the disc shear device provided by this utility model includes a first disc shear body and a second disc shear body; the edge of the first disc shear body has a first cutting edge; the edge of the second disc shear body has a second cutting edge; the first disc shear body and the second disc shear body are arranged vertically and staggered horizontally, so that the first cutting edge and the second cutting edge are aligned vertically; the edge of the first cutting edge is chamfered to form a first chamfered cutting edge; the edge of the second cutting edge is chamfered to form a second chamfered cutting edge; the first disc shear body and the second disc shear body rotate in opposite directions to use the first chamfered cutting edge and the second chamfered cutting edge to cut the object passing between them, thus improving the quality of the sheared edge of thick strip steel, reducing burrs and tears on the edge of thick strip steel during the shearing process, extending the service life of the disc shear, and reducing the labor intensity of the operator. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 A schematic diagram of the overall layout of an embodiment of a disc shear device provided by this utility model;

[0024] Figure 2 A front view of a disc shear, representing an embodiment of the disc shearing device provided by this utility model;

[0025] Figure 3 A schematic diagram of a disc shear device capable of being lubricated. Detailed Implementation

[0026] The core of this utility model is to provide a disc shearing device that can improve the quality of the sheared edge of thick strip steel, reduce burrs and tears on the edge of thick strip steel, extend the service life of the disc shear, and reduce the labor intensity of operators.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] An embodiment of the disc shear device provided by this utility model is as follows: Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the overall layout of an embodiment of a disc shear device provided by this utility model. Figure 2 The image shows a front view of a disc shear, which is an embodiment of the disc shear device provided by this utility model. The disc shear device may include a first disc shear body 1 and a second disc shear body 2. It should be noted that the two disc shear bodies may have the same shape and can be rotated after installation.

[0029] The edge of the first disc shear body 1 has a first shear blade 3. By utilizing the sharpness of this first shear blade 3, it is possible to cut strip steel.

[0030] The edge of the second disc shear body has a second shear blade, which is the same as the structure of the first disc shear body 1. It will not be described in detail here with reference to the figure. Moreover, the two shear blades work together to accurately cut the strip steel between them.

[0031] The first disc shear body 1 and the second disc shear body 2 are arranged vertically and staggered horizontally, so that the first shear blade 3 and the second shear blade are aligned vertically. That is, one of the two shear blades is on top and the other is on the bottom, forming a structure similar to the two shear blades of scissors. Effective cutting operations can be achieved by using these two shear blades.

[0032] The edge of the first shear blade 3 is chamfered to form the first chamfered cutting edge 4. In other words, after the original right-angled edge of the first shear blade 3 is chamfered, a chamfered cutting edge is formed, which avoids the problem that the right-angled cutting edge is relatively thin and easy to chip. At this time, the new cutting edge formed after chamfering can be used for cutting. This increases the thickness of the cutting edge and the force points during cutting, resulting in greater support and reducing the wear of the cutting edge and chipping caused by concentrated force on the cutting edge. Therefore, it can have a longer service life during cutting.

[0033] The edge of the second shear blade is chamfered to form a second chamfered cutting edge. It should be noted that the type of second chamfered cutting edge is the same as the first chamfered cutting edge 4, so it will not be described in detail here with reference to the figure.

[0034] The first disc shear body 1 and the second disc shear body 2 rotate in opposite directions to cut the object passing between them using the first chamfered blade 4 and the second chamfered blade.

[0035] It should be noted that during use, the first blade of the first disc shear body 1 and the second blade of the second disc shear body 2 are installed offset on the upper and lower bases, matched with certain parameters (overlap and gap values). The motor drives the upper and lower disc shear blades to rotate at the same speed but in opposite directions through the transmission device. When the cold-rolled strip steel is fed between the upper and lower disc shear blades, the strip steel is subjected to the circumferential force of the shear blades. Under the shearing action of the shear blades, the strip steel is separated into the required width. It can be seen that this solution can improve the durability of the shear blades by chamfering and grinding the cutting edge of the disc shear without increasing costs, thus avoiding the problem of cracks or chipping caused by stress concentration at the edge of the shear blade, thereby extending the service life. It can also improve the shearing quality because it makes the shearing process smoother and reduces problems such as burrs and tears on the strip steel edges. This disc shear equipment can be applied to the edge cutting of cold-rolled high-strength steel plates, such as in pickling mills, hot pickling mills, or slitting mills, to shear the edges of cold-rolled strip steel.

[0036] As can be seen from the above technical solution, in the embodiments of the disc shear equipment provided by this utility model, since it includes a first disc shear body and a second disc shear body; the edge of the first disc shear body has a first shear blade; the edge of the second disc shear body has a second shear blade; the first disc shear body and the second disc shear body are arranged vertically and staggered horizontally, so that the first shear blade and the second shear blade are aligned vertically; the edge of the first shear blade is chamfered to form a first chamfered cutting edge; the edge of the second shear blade is chamfered to form a second chamfered cutting edge; the first disc shear body and the second disc shear body rotate in opposite directions to use the first chamfered cutting edge and the second chamfered cutting edge to cut the object passing between them, thus improving the quality of the sheared edge of thick strip steel, reducing burrs and tears on the edge of thick strip steel during the shearing process, extending the service life of the disc shear, and reducing the labor intensity of the operator.

[0037] In a specific embodiment of the aforementioned disc shear device, the chamfer of the edge of the first shear blade 3 is preferably 30° to 45°, and more preferably 45°, for better symmetry. Furthermore, continuing to refer to... Figure 2 The distance 5 between the first chamfered cutting edge 4 and the edge of the first disc shear body 1 can be 0.5mm to 1.0mm, and more preferably 0.5mm. That is, by cutting the original shear blade at a 45° angle with a width of 0.5mm, a new first chamfered cutting edge is obtained, and then this first chamfered cutting edge can be used for shearing operations.

[0038] In another specific embodiment of the aforementioned disc shear device, the chamfer of the edge of the second shear blade can be 30° to 45°, and more preferably 45°, for better symmetry. Furthermore, the distance between the second chamfered blade and the edge of the second disc shear body can be 0.5mm to 1.0mm, and more preferably 0.5mm. That is, by cutting off the original blade at a 45° angle with a width of 0.5mm, a new second chamfered blade is obtained, which can then be used for shearing operations.

[0039] In another specific embodiment of the aforementioned disc shear device, both edges of the first shear blade 3 can be chamfered to form a first chamfered cutting edge 4, that is, as shown in... Figure 1 As shown, the first disc shear body 1 has a first chamfered blade edge 4 on both its left and right sides. This way, if the first chamfered blade edge 4 on the right side chips after a certain period of shearing, the first disc shear body 1 can be rotated and replaced with the first chamfered blade edge 4 on the left side to continue shearing. This effectively doubles the lifespan of the disc shear. Similarly, both edges of the second shear blade can be chamfered to form a second chamfered blade edge, for the same reason as the first shear blade having first chamfered blade edges on both edges; this will not be elaborated further here.

[0040] refer to Figure 3 , Figure 3This is a schematic diagram of a lubricated disc shear device. Based on any of the aforementioned embodiments of the disc shear device, this embodiment may further include a lubricant supply device 6 facing the first shear blade 3 and the second shear blade, used to lubricate the first and second shear blades. It should be noted that this lubricant supply device 6 can be used to supply lubricant to the first and second shear blades, thus continuously lubricating and cooling the shear blades during the shearing process, further reducing the probability of wear or chipping. This lubricant can be, but is not limited to, rust-preventive oil. Furthermore, the lubricant supply device 6 may specifically include a lubricant container 601 and a first pipe 602 and a second pipe 603 connected to the lubricant container. The lubricant container 601 may be an oil tank fixed on the disc shear head seat. The end of the first pipe 602 faces the first shear blade 3, and the second pipe 603 faces the second shear blade. Switches 604 may also be provided on the first pipe 602 and the second pipe 603 to control the opening or closing of the first pipe 602 and the second pipe 603 respectively. It should be noted that the switch 604 may be a switch with flow regulation function, so that the flow rate of lubricant entering the shear blade can be adjusted according to actual needs. The machine operator can appropriately adjust the switch 604 to increase or decrease the flow rate of lubricating oil by changing the service life of the shear blade, the cutting edge specifications, and the steel grade, thus expanding the applicability.

[0041] Further, continue to refer to Figure 3 Both the first pipe 602 and the second pipe 603 can be equipped with filters 605 to prevent dust or foreign objects from entering the first and second shear blades along with the lubricant, respectively. It should be noted that these filters 605 are preferably installed at the end of the pipes to prevent dust or foreign objects from contacting the strip and causing indentation defects, thereby ensuring higher strip quality.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A disc shearing device, characterized in that, Includes a first disc shear body and a second disc shear body; The edge of the first disc shear body has a first shear blade; The edge of the second disc shear body has a second shear blade; The first disc shear body and the second disc shear body are arranged vertically and staggered in the horizontal direction, so that the first shear blade and the second shear blade are aligned in the vertical direction; The edge of the first shear blade is chamfered to form a first chamfered cutting edge; The edge of the second shear blade is chamfered to form a second chamfered cutting edge; The first and second disc shear bodies rotate in opposite directions to cut the object passing between them using the first and second chamfered cutting edges.

2. The disc shear device according to claim 1, characterized in that, The chamfer of the edge of the first shear blade is 30° to 45°.

3. The disc shear device according to claim 2, characterized in that, The distance between the first chamfered cutting edge and the edge of the first disc shear body is 0.5 mm to 1.0 mm.

4. The disc shear device according to claim 1, characterized in that, The chamfer of the edge of the second shear blade is 30° to 45°.

5. The disc shear device according to claim 4, characterized in that, The distance between the second chamfered cutting edge and the edge of the second disc shear body is 0.5 mm to 1.0 mm.

6. The disc shear device according to claim 1, characterized in that, Both edges of the first shear blade are chamfered to form a first chamfered cutting edge.

7. The disc shear device according to claim 1, characterized in that, Both edges of the second shear blade are chamfered to form a second chamfered cutting edge.

8. The disc shear device according to any one of claims 1-7, characterized in that, It also includes a lubricant supply device disposed facing the first scissor blade and the second scissor blade for lubricating the first scissor blade and the second scissor blade.

9. The disc shear device according to claim 8, characterized in that, The lubricant supply device includes a lubricant container and a first pipe and a second pipe communicating with the lubricant container. The end of the first pipe faces the first shear blade, and the second pipe faces the second shear blade. Both the first pipe and the second pipe are also provided with a switch device for controlling the opening or closing of the first pipe and the second pipe, respectively.

10. The disc shear device according to claim 9, characterized in that, Both the first and second pipes are equipped with filters to prevent dust or foreign objects from entering the first and second shear blades along with the lubricant.

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