Front pinch type three-roller deviation rectifying device of circle shear

Abstract

The utility model relates to the technical field of steel belt production accessory equipment, and discloses a circle shear front pinch type three-roller deviation rectifying device which comprises a base, a movable frame and a circle shear, the top of the movable frame is fixedly connected with a machine frame, a lower deviation rectifying roller is rotationally connected into the machine frame, a photoelectric sensor is arranged at the top of the base, and the photoelectric sensor is connected with the lower deviation rectifying roller. According to the front pinch type three-roller deviation rectifying device for the circle shear, the deviation rectifying hydraulic cylinder pushes the three-roller pinch device on the movable frame to move between the operation side and the transmission side, and the three rollers clamp a steel belt and drive the steel belt through friction force to achieve movement of the operation side and the transmission side. Proportional deviation correction and integral deviation correction are superposed in the same direction, the deviation correction speed is high and is in direct proportion to the speed of the strip steel, compared with P-type deviation correction, the required strip steel constraint distance is short, a remarkable deviation correction effect can be achieved for a short-distance operation line similar to a rewinding line, and meanwhile a strip steel position detector is arranged on the strip outlet side.

Description

Technical Field

[0001] The utility model relates to the technical field of incidental equipment for steel strip production, in particular to a three-roller deviation correction device with clamping before a disc shear. Background Art

[0002] At present, the rewinding unit production line mostly uses a side guide roller device set on the entrance side of the disc shear to guide the steel strip to the center and enter the disc shear. However, while the side guide roller device guides the steel strip to the center, there are also many problems. When the steel strip deviates, the side guide roller device mechanically limits the width direction of the steel strip through the vertical bars on both sides of the production line, so that the steel strip is located at the center line position of the unit and enters the disc shear for edge trimming. Since the path of the steel strip in the width direction is forcibly restricted, it will certainly cause certain damage to the edge of the steel strip. The rewinding unit production line produces finished coils and has very high quality requirements for the steel coils. In order to ensure the quality of the steel coils, the side guide roller device damages the edge of the steel strip and needs to cut off the damaged edge after entering the disc shear to ensure the quality of the finished steel coils, which increases the time for edge trimming and the waste generated by edge trimming, thereby reducing the production efficiency and economy of the production line.

[0003] The solution of invention patent application No. 201822246689.2 "A rewinding unit pinch roller" is a correction device composed of a roller and two vertically arranged pinch wheels. The roller is installed on the correction frame, the steel belt is located on the top surface of the roller, and the roller rotates with the movement of the strip. A slide rail is fixedly connected between the top surfaces of the two correction frames. The slide rail is a rectangular structure with a square groove on the top surface, and a square through hole is provided on the bottom surface of the square groove. The output shafts of two sliding gear boxes are slidably connected in the through hole. The bottom end of the output shaft of the sliding gear box is keyed to a pinch wheel. The pinch wheel is a U-shaped groove wheel. The top of the piston rod of the push rod is fixedly connected at the center of the outer side of the sliding gear box. The cylinder sleeve of the push rod is fixedly connected to the top of the correction frame and connected to the hydraulic pump through a pipeline. The sliding gear box is controlled by the hydraulic pump to slide in the slide rail, so that the two sides of the strip are stuck in the groove of the pinch wheel. The strip is kept in a fixed position by the thrust of the pinch wheel to achieve the correction effect. The second invention patent application number 201720267113.7 "A three-roller correction device on a steel belt transmission line" is a solution that the three-roller correction device consists of a fixed frame, a roller mounting frame, a first correction roller, a second correction roller, a third correction roller and a power mechanism. After the belt is threaded, the third correction roller is pressed down. When the steel belt located at the front or rear end of the correction device is offset, the power mechanism pushes the hydraulic pump telescopic shaft to push the roller mounting frame to swing to the left or right around the rotating mechanism, so that the offset steel belt is corrected; the implementation principle of the above-mentioned first patent is to clamp the steel belt from the width direction of the steel belt through a U-shaped clamping groove wheel to correct and center it. The principle is similar to that of the side guide roller. The disadvantage of this solution is that it will also cause damage to the steel belt. The edge of the strip is damaged to a certain extent, resulting in an increase in the amount of trimming, waste of raw materials, an increase in waste, and an increase in the time for recycling waste. In addition, the structure is too complicated and the investment cost is high, which is not conducive to the efficient and economical operation of the production line. The disadvantage of the second solution is that the overall size of the equipment is large and it is not suitable for installation in a relatively narrow space. However, the equipment layout of many rewinding unit production lines is very compact. It is difficult to add a correction device to the unit while changing the original unit as little as possible. In addition, the correction roller of this solution is a passive roller, which is rotated by the strip steel. Manual traction and threading are required during threading, which reduces production efficiency and threading difficulty. Therefore, a three-roller correction device with front-clamping type in front of the disc shear is urgently needed to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a three-roller deviation correction device with clamping and feeding in front of a disc shear, which has the advantages of deviation correction function and solves the problem that forced restriction of the path in the width direction of the steel strip will certainly cause certain damage to the edge of the steel strip.

[0006] (II) Technical solution

[0007] The utility model solves the above-mentioned technical problem with the following technical solution: a three-roller deviation correction device with front clamping of a disc shear, comprising a base, a movable frame and a disc shear, the top of the movable frame is fixedly connected to the frame, the lower deviation correction roller is rotatably connected inside the frame, a photoelectric sensor is arranged on the top of the base, a lifting device is arranged on the top of the frame, an upper deviation correction roller is arranged on the bottom of the lifting device, a deviation correction hydraulic cylinder is fixedly connected to the top of the base, the output end of the deviation correction hydraulic cylinder is hinged to the movable frame, the lifting device comprises a lifting hydraulic cylinder fixedly connected to the top of the frame, a rack shaft is fixedly connected to the output end of the lifting hydraulic cylinder, a synchronous shaft is rotatably connected to the inside of the frame, synchronous gears meshing with the rack shaft are respectively installed at both ends of the synchronous shaft, and the bottom of the rack shaft is fixedly connected to the bearing seat of the upper deviation correction roller.

[0008] The beneficial effects of the utility model are:

[0009] The disc shear front clamping three-roller deviation correction device, the deviation correction hydraulic cylinder pushes the three-roller clamping device on the movable frame to move between the operating side and the transmission side. The three rollers clamp the steel strip and drive the steel strip through friction to achieve the movement of the operating side and the transmission side. The proportional deviation correction and the integral deviation correction are superimposed in the same direction. The deviation correction speed is fast and proportional to the strip speed. Compared with the P-type deviation correction, it requires a short strip constraint distance. For short-distance operation lines similar to rewinding lines, significant deviation correction effects can be achieved. At the same time, a strip position detector is set on the strip outlet side.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, slide plates are respectively provided on the left and right sides of the upper deviation-correcting roller bearing seat, a slide groove is provided inside the frame, and the slide plates are slidably connected to the inside of the slide groove.

[0012] Furthermore, a gear motor is fixedly installed on the outside of the movable frame, and the output shaft of the gear motor is fixedly connected to the lower deviation-correcting roller. The number of the gear motors is two.

[0013] Furthermore, there are two lower deviation-correcting rollers, and a transition guide plate is provided at the gap between the two lower deviation-correcting rollers.

[0014] Furthermore, a connecting rod is hinged on the top of the base, and one end of the connecting rod away from the base is hinged to the movable frame.

[0015] Furthermore, a slide is provided on the top of the base, and rollers are rotatably connected to the bottom of the movable frame. The rollers are movably connected to the inside of the slide, and there are four rollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a side view of the structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the disc shear in the utility model.

[0019] In the figure: 1. base; 2. movable frame; 3. slide; 4. roller; 5. connecting rod; 6. frame; 7. lower correction roller; 8. upper correction roller; 9. lifting device; 10. correction hydraulic cylinder; 11. gear motor; 12. photoelectric sensor; 13. disc shear; 14. rack shaft; 15. synchronization shaft; 16. slide plate. DETAILED DESCRIPTION

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

[0021] In the embodiment, Figure 1-3 A three-roller deviation correction device with clamping before a circular shear is provided. The device is arranged at the outlet side of the head shear of the rewinding unit and the inlet side of the circular shear 13. The main function of the device is to correct the deviation of the steel strip before entering the circular shear, so that the steel strip is located at the center line of the unit when entering the circular shear, thereby improving the cutting quality of the circular shear and reducing the generation of cutting waste.

[0022] The utility model comprises a base 1, a movable frame 2 and a disc shear 13, the top of the movable frame 2 is fixedly connected with a frame 6, the interior of the frame 6 is rotatably connected with a lower deviation-correcting roller 7, a lifting device 9 is arranged on the top of the frame 6, an upper deviation-correcting roller 8 is arranged on the bottom of the lifting device 9, a deviation-correcting hydraulic cylinder 10 is fixedly connected with the top of the base 1, a photoelectric sensor 12 is arranged on the top of the base 1, the output end of the deviation-correcting hydraulic cylinder 10 is hinged with the movable frame 2, the lifting device 9 comprises a lifting hydraulic cylinder fixedly connected to the top of the frame 6, a rack shaft 14 is fixedly connected on the output end of the lifting hydraulic cylinder, a synchronous shaft 15 is rotatably connected with the interior of the frame 6, synchronous gears meshing with the rack shaft 14 are respectively installed at both ends of the synchronous shaft 15, the bottom of the rack shaft 14 is fixedly connected with the bearing seat of the upper deviation-correcting roller 8, slide plates 16 are respectively arranged on the left and right sides of the bearing seat of the upper deviation-correcting roller 8, a slide groove is opened inside the frame 6, and the slide plate 16 is slidably connected to the inside of the slide groove.

[0023] A gear motor 11 is fixedly installed on the outside of the movable frame 2, and the output shaft of the gear motor 11 is fixedly connected to the lower deviation-correcting roller 7. There are two gear motors 11 and two lower deviation-correcting rollers 7. A transition guide plate is provided at the gap between the two lower deviation-correcting rollers 7.

[0024] A connecting rod 5 is hinged on the top of the base 1, and one end of the connecting rod 5 away from the base 1 is hinged to the movable frame 2. A slide 3 is arranged on the top of the base 1, and a roller 4 is rotatably connected to the bottom of the movable frame 2. The roller 4 is movably connected to the inside of the slide 3, and there are four rollers 4.

[0025] One side of the frame 6 with a gear motor 11 is the transmission side, and the opposite side of the transmission side is the operating side. The lifting device 9 is provided with a lifting hydraulic cylinder on the transmission side and the operating side respectively. The piston rod of the lifting hydraulic cylinder is connected to a rack shaft 14 by bolts. A synchronous shaft 15 is provided in the middle of the transmission side and the operating side. A synchronous gear is installed at each end of the synchronous shaft 15 through a key connection. When the piston rod of the lifting hydraulic cylinder on one side drives the rack shaft 14 to extend and retract, the rack shaft 14 drives the synchronous gear to rotate, and the rotation is transmitted to the other side by the synchronous shaft 15, thereby ensuring that the rack shaft 14 on the transmission side and the operating side can be extended and retracted synchronously. A card slot is provided on the rack shaft 14, which is connected to the bearing seat of the upper deviation correction roller 8 through a card plate. The bearing seats on both sides of the upper deviation correction roller 8 are provided with Slide plate 16, a slide groove is provided at the middle opening of frame 6, the bearing seat of the upper correcting roller 8 can slide vertically in the slide groove of frame 6 along the height direction at the opening of frame 6, the two lower correcting rollers 7 are active rollers and can be driven to rotate by gear motor 11, the two lower correcting rollers 7 and gear motor 11 are installed on the movable frame 2, when the belt threading operation is carried out, the cylinder piston rods of the lifting hydraulic cylinders on both sides of the lifting device 9 are retracted, driving the upper correcting roller 8 to slide upward in the slide groove of frame 6 to leave enough space for belt threading, the two gear motors 11 drive the two lower correcting rollers 7 to rotate so that the strip on the roller surface moves horizontally into the subsequent equipment to complete the belt threading, and a transition guide plate is provided at the gap between the two lower correcting rollers 7 to prevent the belt head from falling into the gap.

[0026] It should be noted that the base 1 and the movable frame 2 each have two hinges connected by two connecting rods 5, so that the movement of the movable frame 2 is limited to the range of rotation around the hinge of the base 1. The movable frame 2 also has another hinge connected to the piston rod joint of the correcting hydraulic cylinder 10.

[0027] In this embodiment, in actual use, when the steel strip deviates to the operating side (when the photoelectric sensor at the outlet of the deviation correction device detects that the steel strip has deviated), the piston rod of the deviation correction hydraulic cylinder 10 retracts and drives the movable frame 2 and the lower deviation correction roller 7, upper deviation correction roller 8 and other components installed thereon to move toward the transmission side around the two hinge points of the base 1 through the movable frame 2 connecting the hinge point. At the same time, the two lower deviation correction rollers 7 and the upper deviation correction rollers 8 clamp the upper and lower surfaces of the steel strip and drive the steel strip to move toward the transmission side through friction to correct the deviation of the steel strip toward the operating side.

[0028] In this embodiment, in actual use, when the steel belt deviates to the transmission side, the piston rod of the correcting hydraulic cylinder 10 extends to drive the movable frame 2 and the lower correcting roller 7, upper correcting roller 8 and other components installed thereon to move toward the operating side around the two hinge points of the base 1. At the same time, the two lower correcting rollers 7 and the upper correcting rollers 8 clamp the upper and lower surfaces of the steel belt and drive the steel belt to move toward the operating side through friction, thereby correcting the deviation of the steel belt to the transmission side, thereby achieving the purpose of correction, so that the steel belt is accurately located in the center of the unit before entering the disc shear 13, which can effectively reduce the generation of trimming waste of the disc shear 13, reduce the time and labor cost of collecting waste, and greatly improve the material.

[0029] Since the two lower correcting rollers 7 are active rollers driven by a gear motor 11, they can not only shorten the time of manual threading, but also play a certain role in tension compensation or tension distribution for the steel strip. A speed encoder is installed at the tail of the driving motor of the active roller, which forms a closed-loop control with the unwinding and winding speed of the unit. The correcting process always ensures that the speed of the correcting roller is synchronized with the speed of the strip. Compared with the passive roller, the phenomenon of scratches on the surface of the steel strip caused by the asynchronous speed of the roller and the strip is reduced, thereby improving the surface quality and production efficiency of the finished coils of the unit.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-roller deviation correction device with front clamping of a circular shear, comprising a base (1), a movable frame (2) and a circular shear (13), characterized in that: The top of the movable frame (2) is fixedly connected to a frame (6), the interior of the frame (6) is rotatably connected to a lower deviation correction roller (7), the top of the frame (6) is provided with a lifting device (9), the bottom of the lifting device (9) is provided with an upper deviation correction roller (8), the top of the base (1) is fixedly connected to a deviation correction hydraulic cylinder (10), the output end of the deviation correction hydraulic cylinder (10) is hinged to the movable frame (2), and the top of the base (1) is provided with a photoelectric sensor (12); The lifting device (9) comprises a lifting hydraulic cylinder fixedly connected to the top of the frame (6); a rack shaft (14) is fixedly connected to the output end of the lifting hydraulic cylinder; a synchronous shaft (15) is rotatably connected inside the frame (6); synchronous gears meshing with the rack shaft (14) are respectively installed at both ends of the synchronous shaft (15); and the bottom of the rack shaft (14) is fixedly connected to the bearing seat of the upper deviation correction roller (8).

2. The three-roller deviation correction device before the disc shear according to claim 1 is characterized by: Slide plates (16) are respectively provided on the left and right sides of the bearing seat of the upper deviation-correcting roller (8); a slide groove is provided inside the frame (6); and the slide plate (16) is slidably connected to the inside of the slide groove.

3. The three-roller deviation correction device before the disc shear according to claim 1 is characterized by: A gear motor (11) is fixedly mounted on the outside of the movable frame (2), the output shaft of the gear motor (11) is fixedly connected to the lower deviation-correcting roller (7), and there are two gear motors (11).

4. The three-roller deviation correction device before the disc shear according to claim 1 is characterized by: The number of the lower deviation-correcting rollers (7) is two, and a transition guide plate is provided at the gap between the two lower deviation-correcting rollers (7).

5. The three-roller deviation correction device before the disc shear according to claim 1 is characterized by: A connecting rod (5) is hinged on the top of the base (1), and one end of the connecting rod (5) away from the base (1) is hinged to the movable frame (2).

6. The three-roller deviation correction device before the disc shear according to claim 1 is characterized by: A slideway (3) is arranged on the top of the base (1), and a roller (4) is rotatably connected to the bottom of the movable frame (2). The roller (4) is movably connected to the inside of the slideway (3), and there are four rollers (4).

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