Device for tensioning roller of cold rolling mill

Abstract

The utility model discloses a device for a tension roller of a cold-rolling mill, which belongs to the technical field of cold-rolling mills and comprises a base, side frames are fixedly mounted on two sides of the top of the base, device frame welding assemblies are fixedly mounted on the inner sides of the two side frames, and each device frame welding assembly comprises an internal reinforcing rib and an external reinforcing rib. The device for the tensioning roller of the cold rolling mill is integrally designed, and the synchronism of actions on the two sides of the tensioning roller is enhanced by additionally arranging the racks; through the overall design concept, on the premise that the use difficulty and maintenance are not increased, stress concentration points are reduced by optimizing the synergistic effect of a frame welding assembly, a tensioning roller mechanism and a flat key, and therefore the problems that due to the fact that connection parts of an original device are frequently loosened and attached unfirmly, transmission torque is unbalanced, and the service life of the device is prolonged are solved. And finally, the stable operation of the double-rack irreversible cold rolling mill is realized, and the yield and efficiency are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of cold rolling mills, in particular to a device for tensioning rollers of cold rolling mills. Background Art

[0002] The world's most advanced twin-stand irreversible cold rolling mill is mainly used to roll milled surface strip into thinner coils, providing strips that meet the production process for subsequent finishing and deformation. Usually, the entrance of this type of rough rolling mill is equipped with a tensioning roller device. This tensioning roller device mainly plays the role of stabilizing the tension of the strip (such as copper strip) and ensuring the fluctuation value of the thickness difference of the coil rolling. It is an important auxiliary mechanism in the rolling of the equipment. Whether the function of this mechanism is stable is the key factor in whether the twin-stand irreversible cold rolling mill can achieve the goal of increasing production and increasing efficiency. The maintenance intensity is high during use, and the bearing seat often breaks due to untimely maintenance. Due to design defects, in order to save production costs, the broken bearing seat is usually repaired by welding, which makes subsequent maintenance more frequent, which is not conducive to increasing production and increasing efficiency of the twin-stand irreversible cold rolling mill.

[0003] To address the aforementioned technical issues, the present invention proposes a device for a tensioning roller in a cold rolling mill, thereby ensuring the service life of the tensioning roller and reducing the need for frequent maintenance. This ensures the rolling quality of the dual-stand irreversible cold rolling mill, thereby improving quality and increasing efficiency. Therefore, it is necessary to provide a new tensioning roller device to address the issues of frequent breakage and high maintenance intensity associated with existing tensioning rollers. Utility Model Content

[0004] The purpose of this utility model is to provide a device for the tensioning roller of a cold rolling mill to solve the problems of frequent breakage of the tensioning roller and high maintenance intensity in the prior art, thereby improving the production efficiency of the double-stand irreversible cold rolling mill and playing a role in increasing production and efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides a device for the tensioning roller of a cold rolling mill, comprising a base, a cylinder fixedly mounted on the top of the base, side frames fixedly mounted on both sides of the top of the base, a device frame welding assembly fixedly mounted on the inner sides of the two groups of side frames, the device frame welding assembly comprising internal reinforcement ribs and external reinforcement ribs, a tensioning roller mechanism is arranged above the internal reinforcement ribs, and the bottom of the external reinforcement ribs is assembled with the telescopic end of the cylinder.

[0006] Preferably, both ends of the tensioning roller mechanism are provided with flat keys, and the bottom of the flat key is movably mounted on the surface of the side frame through a movable component. The tensioning roller mechanism includes a shaft body provided above the internal reinforcement rib, and the outer portion of the shaft body is sleeved with a roller body. Both ends of the shaft body are connected to the side frame through flat keys, and bearings are installed at both ends of the shaft body, and sealing rings are fixedly installed on both sides of the bearing.

[0007] Preferably, a centering mechanism is provided on one side of the shaft for correcting the rolling direction of the copper strip to be processed.

[0008] Preferably, the movable component includes a graphite copper plate, a rack and a gear. The surface of the side frame is fixedly mounted with a rack, and the inner sides of the two groups of graphite copper plates are rotatably mounted with gears. The surface of the gear is engaged with the surface of the rack to fix the graphite copper plate to the side frame.

[0009] Preferably, a steel plate is provided on the surface of the graphite copper plate, and the steel plate is fixed to the surface of the graphite copper plate by bolts.

[0010] Preferably, both ends of the shaft are threadedly connected with locking nuts, and the surfaces of the two groups of sealing rings located on the outside are provided with clamping holes, one side of the locking nut is fitted with the inner wall of the clamping hole, and both ends of the tensioning roller are connected with oil filling nozzles.

[0011] Preferably, the centering mechanism includes a motor installed on one side of one group of the side frames, the output shaft of the motor is installed with a worm through a connecting shaft, the surface of the worm is engaged with a worm wheel, and the surface of the worm wheel is fixedly installed with a vertical roller.

[0012] Preferably, a flat roller 1 and a flat roller 2 are installed on the top of the internal reinforcing rib, and the flat roller 1 and the flat roller 2 are arranged corresponding to the shaft body.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model designs the device for the tensioning roller of the cold rolling mill as a whole, and enhances the synchronization of the movements of both sides of the tensioning roller by adding a rack; through the overall design concept, without increasing the difficulty of use and maintenance, the synergy between the frame welding assembly, the tensioning roller mechanism and the flat key is optimized to reduce stress concentration points, thereby solving the problems of the original device's connection parts being often loose and the loose fitting leading to unbalanced torque transmission, resulting in frequent breakage and high maintenance intensity, and ultimately achieving stable operation and increased production and efficiency of the double-stand irreversible cold rolling mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 For this utility model Figure 1 Schematic diagram of the left view structure;

[0017] Figure 3 For this utility model Figure 1 Schematic diagram of the top view structure;

[0018] Figure 4 For this utility model Figure 1 Enlarged view of point A in the middle.

[0019] In the figure: 1. Base; 2. Device frame welding assembly; 21. Internal reinforcement ribs; 22. External reinforcement ribs; 23. Rack; 24. Gear; 25. Graphite copper plate; 26. Tensioning roller mechanism; 261. Bearing; 262. Oil nozzle; 263. Sealing ring; 264. Locking nut; 265. Clamping hole; 266. Shaft; 267. Roller body; 27. Flat key; 28. Steel plate; 3. Side frame; 4. Flat roller 1; 5. Flat roller 2; 6. Centering mechanism; 61. Worm; 62. Worm gear; 63. Motor; 64. Coupling; 65. Vertical roller; 7. Cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-4 The present invention provides a device for tensioning rollers in a cold rolling mill, used for processing strip materials, such as copper strip. The device comprises a base 1, with a cylinder 7 fixedly mounted on the top of the base 1. Side frames 3 are fixedly mounted on both sides of the top of the base 1. A device frame welding assembly 2 is fixedly mounted on the inner sides of the two sets of side frames 3. The device frame welding assembly 2 includes internal reinforcing ribs 21 and external reinforcing ribs 22. A tensioning roller mechanism 26 is provided above the internal reinforcing ribs 21 for increasing the tension of the copper strip to be processed. The bottom of the external reinforcing ribs 22 is mounted together with the telescopic end of the cylinder 7.

[0022] Both ends of the tensioning roller mechanism 26 are provided with flat keys 27. The tensioning roller mechanism 26 includes a shaft body 266 arranged above the internal reinforcement rib 21. The outer portion of the shaft body 266 is sleeved with a roller body 267. Both ends of the shaft body 266 are connected to the side frame 3 through flat keys 27. Bearings 261 are installed at both ends of the shaft body 266. Sealing rings 263 are fixedly installed on both sides of the bearing 261. Locking nuts 264 are threadedly connected at both ends of the shaft body 266. The surfaces of the two groups of sealing rings 263 located on the outside are provided with card holes 265. One side of the locking nut 264 fits with the inner wall of the card hole 265. Both ends of the tensioning roller are connected with a fuel nozzle 262. Flat roller 14 and flat roller 25 are installed on the top of the internal reinforcement rib 21. Flat roller 14 and flat roller 25 are arranged corresponding to the shaft body 266.

[0023] In this embodiment, using copper strip processing as an example, incoming material (approximately 15 mm) is rolled through four passes into a coil approximately 1.2 mm thick. During rolling, the tensioning roller mechanism 26 is first moved forward (in the rolling direction) by the base 1, with guide plates assisting in threading and loading the material. Once the coil reaches the device, the centering mechanism 6 is operated to promptly correct the coil's deviation to the exact center of the rolling direction. As the copper strip nears the tensioning roller mechanism 26, the oil cylinder 7 raises the tensioning roller structure, raising its shaft 266 to facilitate passage of the copper strip through the tensioning roller mechanism 26. Once the copper strip passes through the tensioning roller mechanism 26 and enters the roller gap, the oil cylinder 7 lowers the tensioning roller structure, bringing the roller surface 267 into contact with the surface of the copper strip. This, in conjunction with flat rollers 1 (4) and 2 (5), compresses the copper strip.

[0024] Preferably, a centering mechanism 6 is provided on one side of the tensioning roller mechanism 26, and the centering mechanism 6 includes a motor 63 installed on one side of one group of side frames 3, and the output shaft of the motor 63 is installed with a worm 61 through a connecting shaft, and the surface of the worm 61 is meshed with a worm wheel 62, and the surface of the worm wheel 62 is fixedly installed with a vertical roller 65.

[0025] By setting the centering component, the material coil can be corrected to the center of the rolling direction. Specifically, when correcting the deviation, the user can drive the worm 61 to rotate through the motor 63 and the coupling 64, and then drive the vertical roller 65 to rotate through the worm gear 62. In this embodiment, two groups of vertical rollers 65 are provided, one on each side of the material coil, for correcting the deviation.

[0026] It is worth noting that the bottom of the flat key 27 is movably mounted on the surface of the side frame 3 through a movable component. The movable component includes a graphite copper plate 25, a rack 23 and a gear 24. The rack 23 is fixedly mounted on the surface of the side frame 3. The inner sides of the two sets of graphite copper plates 25 are rotatably mounted with gears 24. The surface of the gear 24 is engaged with the surface of the rack 23. The surface of the graphite copper plate 25 is provided with a steel plate 28, and the steel plate 28 is fixed to the surface of the graphite copper plate 25 by bolts.

[0027] By setting up the movable component, the stability of the movement of the tensioning roller mechanism 26 can be improved. When the tensioning roller mechanism 26 moves up and down, it will drive the graphite copper plate 25 to move. The movement of the graphite copper plate 25 will drive the gear 24 to rotate on the surface of the rack 23, thereby improving the stability of the movement of the tensioning roller mechanism 26. By setting up the steel plate 28, the steel plate 28 is covered on the surface of the graphite copper plate 25, which can improve its protection.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for tensioning rollers of a cold rolling mill, characterized in that: include: A base (1), with an oil cylinder (7) fixedly mounted on the top of the base (1); Side frames (3) are fixedly mounted on both sides of the top of the base (1), and device frame welding assemblies (2) are fixedly mounted on the inner sides of the two sets of side frames (3); The device frame welding assembly (2) includes an internal reinforcing rib (21) and an external reinforcing rib (22). A tensioning roller mechanism (26) for increasing the tension of the copper strip to be processed is provided above the internal reinforcing rib (21). Both ends of the tensioning roller mechanism (26) are provided with flat keys (27). The bottom of the flat key (27) is movably mounted on the surface of the side frame (3) through a movable component. The bottom of the external reinforcing rib (22) is assembled with the telescopic end of the oil cylinder (7).

2. The device for tensioning rollers of a cold rolling mill according to claim 1, characterized in that: The tensioning roller mechanism (26) includes a shaft (266) arranged above the internal reinforcing rib (21), a roller body (267) is sleeved on the outside of the shaft (266), both ends of the shaft (266) are connected to the side frame (3) through the flat key (27), bearings (261) are installed at both ends of the shaft (266), and sealing rings (263) are fixedly installed on both sides of the bearing (261).

3. The device for tensioning rollers of a cold rolling mill according to claim 2, characterized in that: The movable assembly includes a graphite copper plate (25), a rack (23) and a gear (24); A rack (23) is fixedly mounted on the surface of the side frame (3), and gears (24) are rotatably mounted on the inner sides of the two groups of graphite copper plates (25), and the surfaces of the gears (24) are meshed with the surfaces of the racks (23) to fix the graphite copper plates (25) to the side frame (3).

4. The device for tensioning rollers of a cold rolling mill according to claim 3, characterized in that: A steel plate (28) is provided on the surface of the graphite copper plate (25), and the steel plate (28) is fixed to the surface of the graphite copper plate (25) by bolts.

5. The device for tensioning rollers of a cold rolling mill according to claim 4, characterized in that: Both ends of the shaft (266) are threadedly connected with locking nuts (264), and the surfaces of the two groups of sealing rings (263) located on the outside are provided with clamping holes (265), one side of the locking nuts (264) is in contact with the inner wall of the clamping holes (265), and both ends of the tensioning roller are connected with oil nozzles (262).

6. The device for tensioning rollers of a cold rolling mill according to claim 5, characterized in that: A centering mechanism (6) is provided on one side of the shaft (266) for correcting the rolling direction of the copper strip to be processed.

7. The device for tensioning rollers of a cold rolling mill according to claim 6, characterized in that: The centering mechanism (6) includes a motor (63) installed on one side of one group of the side frames (3); the output shaft of the motor (63) is installed with a worm (61) through a connecting shaft; the surface of the worm (61) is meshed with a worm wheel (62); and the surface of the worm wheel (62) is fixedly installed with a vertical roller (65).

8. The device for tensioning rollers of a cold rolling mill according to claim 7, characterized in that: A flat roller 1 (4) and a flat roller 2 (5) are installed on the top of the internal reinforcing rib (21), and the flat roller 1 (4) and the flat roller 2 (5) are arranged corresponding to the shaft (266).

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