A cold-rolled steel strip cutting equipment

Abstract

This utility model discloses a cold-rolled steel strip cutting device, relating to the technical field of cutting equipment. The device includes a cutting box, inside which a cutting driven shaft is movably connected via bearings. A cutting blade is mounted on the top of the cutting box, a drive box is located on one side of the cutting blade, a straightening box is fixedly connected to one side of the cutting box, and an uncoiler is fixedly connected to one side of the straightening box. A grinding assembly is mounted on the top of the cutting blade. This utility model achieves online real-time blade edge maintenance by integrating a hydraulically driven grinding assembly and an atomizing cooling assembly. During equipment operation, a hydraulic cylinder pushes eleven symmetrically distributed grinding plates to synchronously grind the cutting blade in both directions, eliminating the need to stop the machine to disassemble the blade. Combined with the inclined design of the cooling groove and the spraying of atomized coolant, heat dissipation is achieved quickly, and grinding debris is absorbed. This design extends the continuous operation time of the equipment, reduces the frequency of downtime maintenance, and significantly improves production capacity and equipment utilization.

Description

Technical Field

[0001] This utility model belongs to the field of cutting equipment technology, and in particular relates to a cold-rolled steel strip cutting device. Background Technology

[0002] Cold-rolled steel strip slitting is a precision machining process that cuts wide cold-rolled steel strips into multiple narrow strips using machinery or cutting tools. It is widely used in automobile manufacturing, appliance housings, and architectural decoration. Its core requirement is to ensure a smooth, burr-free cut surface to meet the stringent standards of downstream products for dimensional accuracy and surface quality.

[0003] Traditional slitting equipment relies on high-speed rotating disc cutters to continuously cut steel strips. However, the cutters are prone to wear and dulling during long-term use, leading to problems such as cutting burrs and edge warping, which seriously affects the finished product qualification rate. Currently, the industry generally adopts a maintenance method of manually disassembling the cutters for offline grinding after machine shutdown. This method has the following drawbacks: frequent machine shutdowns for cutting or grinding interrupt continuous production and reduce equipment utilization. To address these issues, we provide a cold-rolled steel strip cutting equipment to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a cold-rolled steel strip cutting device. By combining the grinding component and the cooling component, it solves the problem of frequent shutdowns for tool replacement or grinding interrupting continuous production and reducing equipment utilization in existing cutting equipment.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0006] This utility model relates to a cold-rolled steel strip cutting device, comprising a cutting box, a cutting driven shaft movably connected inside the cutting box via bearings, a cutting blade mounted on the top of the cutting box, a drive box mounted on one side of the cutting blade, a straightening box fixedly connected to one side of the cutting box, an uncoiler fixedly connected to one side of the straightening box, and a grinding assembly mounted on the top of the cutting blade. The grinding assembly includes a grinding box fixedly connected to the top of the cutting box, a slide rod fixedly connected inside the grinding box, and a first grinding plate and a second grinding plate slidably connected to the surface of the slide rod. A cooling assembly is provided inside both the first and second grinding plates, and the cooling assembly includes a cooling groove formed inside the first and second grinding plates, a cooling pipe fixedly connected inside the cooling groove, and a cooling nozzle communicating with the bottom of the cooling pipe.

[0007] The present invention is further configured such that there are eleven of the first grinding plates and eleven of the second grinding plates, and a connecting rod is fixedly connected inside the first grinding plate and the second grinding plate.

[0008] The present invention is further configured such that a first hydraulic cylinder is fixedly connected to one side of the grinding box, the output end of the first hydraulic cylinder extends into the interior of the grinding box and is fixedly connected to the first grinding plate.

[0009] The present invention is further configured such that a second hydraulic cylinder is fixedly connected to the other side of the grinding box, the output end of the second hydraulic cylinder extends into the interior of the grinding box and is fixedly connected to the second grinding plate.

[0010] The present invention is further configured such that the first grinding plate and the second grinding plate are designed to face each other, and the first grinding plate and the second grinding plate are located on both sides of the cutting blade.

[0011] The present invention is further configured such that the bottom of the cooling groove is designed to be inclined downwards, and the cooling nozzle is an atomizing nozzle.

[0012] The present invention is further configured such that a water inlet pipe is connected to the top of the cooling pipe, one end of the water inlet pipe extends to the top of the grinding box, and the other end of the water inlet pipe is connected to an external delivery pump.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model achieves online real-time cutting edge maintenance by integrating a hydraulically driven grinding assembly and an atomizing cooling assembly. During equipment operation, the hydraulic cylinder pushes eleven symmetrically distributed grinding plates to simultaneously grind the cutting blade in both directions, eliminating the need to stop the machine to disassemble the tool. Combined with the inclined design of the cooling groove and the atomized coolant spray, heat dissipation is achieved quickly, and grinding debris is absorbed. This design extends the continuous operation time of the equipment, reduces the frequency of downtime maintenance, and significantly improves productivity and equipment utilization.

[0015] 2. This invention utilizes the synergistic effect of online grinding and cooling to maintain the cutting edge of the cutting tool at a consistently sharp edge. The atomized coolant stabilizes the tool temperature, preventing a decrease in hardness caused by high-temperature annealing. Simultaneously, grinding debris is wet-absorbed, reducing burr height on the slitting surface, improving cutting accuracy and finished product yield, extending tool life, and significantly reducing maintenance costs.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a cold-rolled steel strip cutting device.

[0019] Figure 2This is a perspective view of a grinding box in a cold-rolled steel strip cutting device.

[0020] Figure 3 This is a cross-sectional view of a grinding box in a cold-rolled steel strip cutting device.

[0021] Figure 4 This is a perspective view of a grinding component in a cold-rolled steel strip cutting device.

[0022] Figure 5 This is a three-dimensional view of a cooling component in a cold-rolled steel strip cutting device.

[0023] In the attached diagram: 1. Cutting box; 2. Cutting driven shaft; 3. Cutting blade; 4. Drive box; 5. Straightening box; 6. Uncoiler; 7. Grinding box; 8. Slide rod; 9. First grinding plate; 10. Second grinding plate; 11. Cooling groove; 12. Cooling pipe; 13. Cooling nozzle; 14. Connecting rod; 15. First hydraulic cylinder; 16. Second hydraulic cylinder; 17. Water inlet pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-5 This utility model relates to a cold-rolled steel strip cutting device, comprising a cutting box 1, a cutting driven shaft 2 movably connected inside the cutting box 1 via bearings, a cutting blade 3 mounted on the top of the cutting box 1, a drive box 4 mounted on one side of the cutting blade 3, a straightening box 5 fixedly connected to one side of the cutting box 1, an uncoiler 6 fixedly connected to one side of the straightening box 5, and a grinding assembly mounted on the top of the cutting blade 3. The grinding assembly includes a grinding box 7 fixedly connected to the top of the cutting box 1, a sliding rod 8 fixedly connected inside the grinding box 7, and a first grinding plate 9 and a second grinding plate 10 slidably connected to the surface of the sliding rod 8. Through the setting of the grinding assembly, when needed... The cutting edges on both sides of the cutting blade 3 can be ground simultaneously, avoiding the cumbersome operation of disassembling the blade during traditional shutdown, ensuring that the blade remains sharp. Both the first grinding plate 9 and the second grinding plate 10 are equipped with cooling components. The cooling components include cooling grooves 11 formed inside the first grinding plate 9 and the second grinding plate 10, cooling pipes 12 fixedly connected inside the cooling grooves 11, and cooling nozzles 13 connected to the bottom of the cooling pipes 12. Through the setting of the cooling components, during the grinding process, the atomizing nozzles spray coolant onto the cutting blade 3, quickly removing frictional heat and preventing the blade from losing hardness due to high-temperature annealing.

[0027] Example 2

[0028] Please see Figures 1-5 Based on Embodiment 1, there are eleven first grinding plates 9 and eleven second grinding plates 10. Each of the first grinding plates 9 and 10 has a connecting rod 14 fixedly connected inside. The connecting rod 14 connects the eleven first grinding plates 9 and 10 to each other. A first hydraulic cylinder 15 is fixedly connected to one side of the grinding box 7. The output end of the first hydraulic cylinder 15 extends into the grinding box 7 and is fixedly connected to the first grinding plate 9. The first hydraulic cylinder 15 is used to push the first grinding plate 9 to move. A second hydraulic cylinder 16 is fixedly connected to the other side of the grinding box 7. The output end of the second hydraulic cylinder 16 extends into the grinding box 7 and is fixedly connected to the second grinding plate 10. The second hydraulic cylinder 16 is used to push the second grinding plate 10 to move. The first grinding plate 9 and the second grinding plate 10 are designed to be opposite each other, and are located on both sides of the cutting blade 3. After the first grinding plate 9 and the second grinding plate 10 come into contact with the cutting blade 3, the cutting blade 3 is ground. The bottom of the cooling groove 11 is designed to be inclined downward. The cooling nozzle 13 is an atomizing nozzle. The cooling nozzle 13 atomizes and sprays cooling liquid during grinding to cool and reduce dust on the cutting blade 3. The top of the cooling pipe 12 is connected to a water inlet pipe 17. One end of the water inlet pipe 17 extends to the top of the grinding box 7, and the other end of the water inlet pipe 17 is connected to an external delivery pump. The water inlet pipe 17 is used to deliver cooling liquid to the cooling pipe 12.

[0029] The working principle of this utility model is as follows: the steel strip coil that needs to be slit is placed on the uncoiler 6 for uncoiling. After uncoiling, the steel strip is straightened by the straightening box 5. After straightening, the steel strip enters the cutting driven shaft 2 and the cutting knife 3. The drive box 4 drives the cutting knife 3 to rotate. The cutting knife 3 and the cutting driven shaft 2 cooperate to slit the steel strip.

[0030] During the cutting process, it is necessary to check the slitting edges in a timely manner to observe whether burrs appear. When burrs appear, the first hydraulic cylinder 15 and the second hydraulic cylinder 16 are activated. The first hydraulic cylinder 15 drives the first grinding plate 9 to move towards the cutting blade 3, and the second hydraulic cylinder 16 drives the second grinding plate 10 to move towards the cutting blade 3, so that both the first grinding plate 9 and the second grinding plate 10 are in contact with the cutting blade 3, and the cutting blade 3 is ground by the first grinding plate 9 and the second grinding plate 10.

[0031] During the grinding process, the external pump delivers cooling liquid to the water inlet pipe 17, which then enters the cooling pipe 12. The cooling liquid is atomized and sprayed through the cooling nozzle 13 at the bottom of the cooling pipe 12. The cooling liquid falls onto the cutting blade 3 to cool it down, preventing the high temperature during grinding from affecting the hardness of the cutting blade 3. It also prevents metal chips generated during grinding from splashing outwards. Once grinding is complete, the first hydraulic cylinder 15 and the second hydraulic cylinder 16 can retract.

[0032] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cold-rolled steel strip cutting device, comprising a cutting box (1), characterized in that: The cutting box (1) is movably connected to the cutting driven shaft (2) through the bearing. The cutting box (1) is equipped with a cutting blade (3) on the top. The cutting blade (3) is equipped with a drive box (4) on one side. The cutting box (1) is fixedly connected to a straightening box (5) on one side. The straightening box (5) is fixedly connected to an uncoiler (6) on one side. The cutting blade (3) is provided with a grinding assembly at the top. The grinding assembly includes a grinding box (7) fixedly connected to the top of the cutting box (1), a slide rod (8) fixedly connected inside the grinding box (7), and a first grinding plate (9) and a second grinding plate (10) slidably connected to the surface of the slide rod (8). Both the first grinding plate (9) and the second grinding plate (10) are provided with a cooling component. The cooling component includes a cooling groove (11) opened inside the first grinding plate (9) and the second grinding plate (10), a cooling pipe (12) fixedly connected inside the cooling groove (11), and a cooling nozzle (13) connected to the bottom of the cooling pipe (12).

2. The cold-rolled steel strip cutting equipment according to claim 1, characterized in that: There are eleven of the first grinding plate (9) and the second grinding plate (10), and a connecting rod (14) is fixedly connected inside the first grinding plate (9) and the second grinding plate (10).

3. The cold-rolled steel strip cutting equipment according to claim 1, characterized in that: A first hydraulic cylinder (15) is fixedly connected to one side of the grinding box (7). The output end of the first hydraulic cylinder (15) extends into the interior of the grinding box (7) and is fixedly connected to the first grinding plate (9).

4. The cold-rolled steel strip cutting equipment according to claim 1, characterized in that: A second hydraulic cylinder (16) is fixedly connected to the other side of the grinding box (7). The output end of the second hydraulic cylinder (16) extends into the interior of the grinding box (7) and is fixedly connected to the second grinding plate (10).

5. The cold-rolled steel strip cutting equipment according to claim 1, characterized in that: The first grinding plate (9) and the second grinding plate (10) are designed to face each other, and the first grinding plate (9) and the second grinding plate (10) are located on both sides of the cutting blade (3).

6. The cold-rolled steel strip cutting equipment according to claim 1, characterized in that: The bottom of the cooling groove (11) is designed to be inclined downwards, and the cooling nozzle (13) is an atomizing nozzle.

7. The cold-rolled steel strip cutting equipment according to claim 1, characterized in that: The cooling pipe (12) is connected to a water inlet pipe (17) at the top. One end of the water inlet pipe (17) extends to the top of the grinding box (7), and the other end of the water inlet pipe (17) is connected to an external delivery pump.

Images