Roll changing device for working roll of temper mill

Abstract

A roll changing device for working rolls of a temper mill comprises a roll changing trolley located on one side of the temper mill, a transverse moving trolley, a traction frame and a tractor are arranged on the roll changing trolley, two roll changing stations arranged side by side are arranged on the transverse moving trolley, the transverse moving trolley can move and enable one roll changing station to stay at the roll changing position, and each roll changing station is provided with a cavity capable of containing two bearing seats. The calipers at the end of the tractor can clamp the ends of the roll shafts, the tractor can drive two bearing seats of the temper mill to move to the roll changing station located at the roll changing position, then after the roll changing station is switched through the movement of the transverse moving trolley, the calipers clamp the ends of the two roll shafts to be changed which are placed in advance, and the roll shafts to be changed are replaced. And then the two to-be-replaced bearing seats are driven to move to the temper mill, online roller replacement of the working roller of the temper mill can be achieved, the plate strip does not need to be cut off and the strip does not need to be threaded again during roller replacement, the roller replacement time is saved, the working efficiency is improved, and the yield loss is avoided.

Description

Technical Field

[0001] This invention relates to the field of roller changing equipment for leveling machines, and more particularly to a roller changing device for the working rollers of a leveling machine. Background Technology

[0002] With the increasing demand for sheet and strip materials from various industries, and the increasingly stringent requirements for rolling processes, there is an urgent need to improve the equipment and technological levels of sheet and strip production equipment. As a core piece of equipment in the sheet and strip leveling process, the leveling machine has been widely used. In actual production, to meet the quality requirements of products such as sheet shape and surface roughness, the work rolls of the leveling machine need to be replaced frequently after wear or surface damage. Therefore, the ease of use of the work roll changing device is crucial and directly affects the production efficiency of the leveling machine.

[0003] However, the existing work roll changing technology for leveling machines has the following problems: 1. During roll changing, the old upper work roll is pulled out along with the lower work roll via a pin. The new lower work roll is then pushed into the leveling machine together with the upper work roll, completing the roll changing process. Because the upper work roll is pulled out by the movement of the lower work roll via a pin, the entire production line needs to be shut down during the roll changing process. The strip also needs to be cut, and the strip needs to be re-threaded after the roll changing is completed. This results in low efficiency, significantly impacting production recovery time and consequently affecting output.

[0004] 2. The existing roll changing device adopts a single-storage work roll changing design structure. Since this roll changing structure can only store one set of work rolls, during the roll changing process, an overhead crane is needed to lift out the old work rolls that have been replaced, and then lift in the new work rolls for the roll changing, which greatly affects the roll changing time and efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a roller changing device for the working rollers of a leveling machine, which eliminates the need to cut the strip and re-thread it during the roller changing process, thus enabling online roller changing for the working rollers of the leveling machine.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a roller changing device for a leveling machine working roller, used to replace a pair of vertically distributed rollers of the leveling machine. The two rollers are respectively installed in their respective bearing seats. Multiple rollers are provided on both sides of the two bearing seats along the width direction. When the leveling machine switches to the roller changing state, the rollers on the two bearing seats can fall onto the roller changing track on the leveling machine so that the bearing seats and rollers can move along the roller changing track. The roller changing device includes a roller changing trolley located on one side of the leveling machine. The roller changing trolley can move between a waiting position away from the leveling machine and a roller changing position close to the leveling machine. One or more transverse tracks are installed on the upper surface of the roller changing trolley. The length direction of the transverse tracks is perpendicular to the axial direction of the roller shaft. A transverse trolley is provided on the transverse tracks. The transverse trolley has two parallel roller changing stations. The roller changing station has a cavity that can accommodate two bearing seats. Roller changing tracks are provided on both sides of the roller changing station along the width direction. The transverse trolley can move along the transverse tracks and stop either of the two roller changing stations at a roller changing position aligned with one end of the roller shaft of the leveling machine. The roller changing track of the roller changing station at the roller changing position can be aligned with the end of the roller changing track of the leveling machine. The roller changing car is also equipped with a traction frame and a traction vehicle. The traction frame has traction rails on both sides along the width direction, and the traction vehicle has pulleys on both sides along the width direction that can move along the traction rails. The end of the traction vehicle facing the leveling machine has two clamps. The two roller changing stations also have traction rails on both sides along the width direction. The traction rail of the roller changing station located at the roller changing position can be aligned with the end of the traction rail of the traction frame. When the traction vehicle moves to an empty roller changing station and clamps the ends of the two roller shafts of the leveling machine with the clamps, the traction vehicle can drive the two bearing seats of the leveling machine to move to the roller changing station located at the roller changing position. When the traction vehicle clamps the ends of the two roller shafts to be replaced placed in the roller changing station located at the roller changing position with the clamps, the traction vehicle can drive the two bearing seats to be replaced to move to the leveling machine.

[0007] Preferably, the tractor is provided with traction gears on both sides along the width direction, and traction racks are provided below the traction frame and the traction rail of the roller changing station. The movement of the traction gears on the traction racks when they rotate can drive the tractor to move along the traction rail.

[0008] Preferably, the upper surface of the roller changing car is provided with a transverse movement cylinder, one end of which is connected to the bottom end of the transverse movement car to facilitate the movement of the transverse movement car.

[0009] Preferably, the roller changing car is installed on a ground rail.

[0010] According to the above technical solution, the beneficial effects of the present invention are: This invention uses a tractor to move two bearing seats of the leveling machine to an empty roller changing station located at the roller changing position. After the roller changing station is switched by the movement of the traverse tractor, the two ends of the roller shafts to be changed, which are pre-placed in another roller changing station, can be clamped by calipers. Then, the two bearing seats to be changed are moved to the leveling machine. Therefore, online roller changing of the leveling machine's working rollers can be realized. During the roller changing, there is no need to cut the strip and re-thread the strip, saving roller changing time, improving work efficiency, and avoiding production loss. Attached Figure Description

[0011] Figure 1 This is a side view of the roller changing device and the leveling machine; Figure 2 This is a top view of the roller changing device and the leveling machine; Figure 3 This is an axial view of the bearing housing and the roller changing station; Figure 4 This is a side view of the two calipers; Figure 5 This is a top view of the caliper clamping the end of the roller.

[0012] The markings in the diagram are: 1. Ground rail, 2. Roller changing car, 3. Transverse track, 4. Transverse car, 5. Transverse cylinder, 6. Bearing seat, 7. Roller changing track, 8. Traction frame, 9. Traction car, 10. Traction track, 11. Traction rack, 12. Caliper, 13. Leveling machine. Detailed Implementation

[0013] Referring to the attached diagram, the specific implementation method is as follows: A roller changing device for a leveling machine working roller is provided for replacing a pair of vertically distributed rollers of a leveling machine 13. The two rollers are respectively installed in their respective bearing seats 6. Multiple rollers are provided on both sides of the two bearing seats 6 along the width direction. When the leveling machine 13 switches to the roller changing state, the rollers on the two bearing seats 6 can fall onto the roller changing track 7 on the leveling machine 13 so that the bearing seats 6 and the rollers can move along the roller changing track 7.

[0014] like Figure 1 , 2 As shown, the roller changing device includes a roller changing carriage 2 located on one side of the leveling machine 13. The roller changing carriage 2 is mounted on the ground rail 1. The roller changing carriage 2 can move along the axial direction of the roller shaft between the waiting position away from the leveling machine 13 and the roller changing position close to the leveling machine 13. Two transverse tracks 3 are installed on the upper surface of the roller changing carriage 2. The length direction of the transverse tracks 3 is perpendicular to the axial direction of the roller shaft. A transverse carriage 4 is provided on the transverse tracks 3. A transverse hydraulic cylinder 5 is provided on the upper surface of the roller changing carriage 2. One end of the transverse hydraulic cylinder 5 is connected to the bottom end of the transverse carriage 4. The transverse hydraulic cylinder 5 can drive the transverse carriage 4 to move along the transverse tracks 3.

[0015] like Figure 3 As shown, the transverse carriage 4 has two parallel roller changing stations. Each roller changing station has a cavity that can accommodate two bearing seats 6. Roller changing tracks 7 are provided on both sides of the roller changing station along the width direction. The transverse carriage 4 can make either of the two roller changing stations stop at a roller changing position that is aligned with one end of the roller shaft of the leveling machine 13. The roller changing track 7 of the roller changing station located at the roller changing position can be aligned with the end of the roller changing track 7 of the leveling machine 13. At this time, the bearing seat 6 and the roller shaft can move from the roller changing track 7 of the leveling machine 13 to the roller changing track 7 of the transverse carriage 4.

[0016] like Figure 1-3 As shown, the roller changing car 2 is also equipped with a traction frame 8 and a traction car 9. The traction frame 8 is provided with traction rails 10 on both sides along the width direction. The traction car 9 is provided with pulleys on both sides along the width direction that can move along the traction rails 10. The end of the traction car 9 facing the leveling machine 13 is provided with two clamps. The two roller changing stations are also provided with traction rails 10 on both sides along the width direction. The traction rails 10 of the roller changing station located at the roller changing position can be aligned with the end of the traction rails 10 of the traction frame 8.

[0017] like Figure 3 As shown, the tractor 9 is equipped with traction gears on both sides along its width. Traction racks 11 are provided below the traction frame 8 and the traction rail 10 of the roller changing station. The movement of the traction gears on the traction racks 11 when they rotate can drive the tractor 9 to move along the traction rail 10. When the tractor 9 moves to the empty roller changing station and clamps the ends of the two roller shafts of the leveling machine 13 with the clamps 12, the tractor 9 can drive the two bearing seats 6 of the leveling machine 13 to move to the roller changing station located at the roller changing position. When the tractor 9 clamps the ends of the two roller shafts to be replaced placed in the roller changing station located at the roller changing position with the clamps 12, the tractor 9 can drive the two bearing seats 6 to be replaced to move to the leveling machine 13.

[0018] The specific steps for changing the rollers in this embodiment are as follows: 1. When the leveling machine 13 is working normally, the roller changing car 2 is in the waiting position; one of the roller changing stations of the transverse moving car 4 is empty and is in the roller changing position, while the other roller changing station is in the center line of the frame and a new set of rollers is stored in advance.

[0019] 2. When it is necessary to change the rollers, the leveling machine 13 switches to the roller changing mode, and the rollers on the upper and lower bearing seats 6 fall on the roller changing track 7 of the leveling machine 13; at the same time, the roller changing carriage 2 moves forward to the roller changing position, and the roller changing carriage 2 is locked by the piston action of the locking cylinder.

[0020] 3. The tractor 9 moves to the empty roller changing station and clamps the ends of the two roller shafts of the leveling machine 13 with the clamp 12. Then the tractor 9 moves in the opposite direction and pulls the two bearing seats 6 of the leveling machine 13 out into the roller changing station. The clamp 12 opens.

[0021] 4. After the caliper 12 is opened, the transverse cylinder 5 drives the transverse carriage 4 to move along the transverse track 3, so that the roller changing station containing a new set of rollers moves to the roller changing position, and the other roller changing station with the old rollers stays on one side of the center line of the frame.

[0022] 5. The tractor 9 clamps the ends of two new rollers to be replaced by the caliper 12, and then pushes a set of new rollers stored in the roller changing station toward the leveling machine 13 until the set of new rollers moves onto the roller changing track 7 of the leveling machine 13 and finally leaves the roller changing station and stops on the leveling machine 13.

[0023] 6. The leveling machine 13 switches to normal working state, the roll change is completed, the traction car 9 returns from the traction station to the traction frame 8, the roll changing car 2 returns to the waiting position, and the transverse car 4 puts a new set of rollers into a roll changing station again as preparation for the next roll change.

Claims

1. A roller changing device for a leveling machine working roller, used to replace a pair of vertically distributed rollers of a leveling machine (13), wherein the two rollers are respectively installed in their respective bearing seats (6), and the two bearing seats (6) are provided with multiple rollers on both sides along the width direction. When the leveling machine (13) switches to the roller changing state, the rollers on the two bearing seats (6) can fall onto the roller changing track (7) on the leveling machine (13) respectively, so that the bearing seats (6) and the rollers can move along the roller changing track (7), characterized in that: The roller changing device includes a roller changing car (2) located on one side of the leveling machine (13). The roller changing car (2) can move between a waiting position away from the leveling machine (13) and a roller changing position close to the leveling machine (13). One or more transverse tracks (3) are installed on the upper surface of the roller changing car (2). The length direction of the transverse track (3) is perpendicular to the axial direction of the roller shaft. A transverse carriage (4) is provided on the transverse track (3). Two roller changing stations are provided on the transverse carriage (4). The roller changing station has a cavity that can accommodate two bearing seats (6). Roller changing tracks (7) are provided on both sides of the roller changing station along the width direction. The transverse carriage (4) can move along the transverse track (3) and make either of the two roller changing stations stop at a roller changing position aligned with one end of the roller shaft of the leveling machine (13). The roller changing track (7) of the roller changing station located at the roller changing position can be aligned with the end of the roller changing track (7) of the leveling machine (13). The roller changing car (2) is also equipped with a traction frame (8) and a traction vehicle (9). The traction frame (8) is provided with traction rails (10) on both sides along the width direction. The traction vehicle (9) is provided with pulleys on both sides along the width direction that can move along the traction rails (10). The traction vehicle (9) is provided with two clamps at one end facing the leveling machine (13). The two roller changing stations are also provided with traction rails (10) on both sides along the width direction. The traction rail (10) of the roller changing station located at the roller changing position can be connected with the traction rail of the traction frame (8). The ends of (10) are aligned with each other. When the tractor (9) moves to the empty roller changing station and clamps the ends of the two roller shafts of the leveling machine (13) with the caliper (12), the tractor (9) can drive the two bearing seats (6) of the leveling machine (13) to move to the roller changing station located at the roller changing position. When the tractor (9) clamps the ends of the two roller shafts to be replaced placed in the roller changing station located at the roller changing position with the caliper (12), the tractor (9) can drive the two bearing seats (6) to be replaced to move to the leveling machine (13).

2. The roller changing device for a leveling machine work roll according to claim 1, characterized in that: The tractor (9) is provided with traction gears on both sides along the width direction. Traction racks (11) are provided below the traction frame (8) and the traction rail (10) of the roller changing station. The movement of the traction gears on the traction rack (11) when they rotate can drive the tractor (9) to move along the traction rail (10).

3. The roller changing device for a leveling machine work roll according to claim 1, characterized in that: The upper surface of the roller changing car (2) is provided with a transverse oil cylinder (5), one end of which is connected to the bottom end of the transverse car (4) so ​​as to drive the transverse car (4) to move.

4. The roller changing device for a leveling machine work roll according to claim 1, characterized in that: The roller changing car (2) is installed on the ground rail (1).

Images