Strip steel cutting mechanism

Abstract

The utility model discloses a strip steel cutting mechanism which comprises an installation frame arranged on conveying equipment, a linear guide rail is arranged on the installation frame, a plurality of movable frames capable of independently moving are evenly distributed on the linear guide rail, a liftable tool apron is arranged on each movable frame, and a cutting knife is arranged on each tool apron. Sensors extending towards the outer sides of the movable frames are arranged on the two sides of the movable frames respectively and used for preventing the movable frames from colliding with one another. According to the strip steel cutting device, the movable frames capable of independently moving are arranged on the mounting frame, the liftable cutter holders and the cutters are arranged on the movable frames, the corresponding number of cutters are selected and moved to corresponding stations according to the specification of strip steel needing to be cut, and the cutter holders and the cutters which are not used are lifted to be prevented from being in contact with the strip steel, so that the strip steel cutting efficiency is improved, and the service life of the strip steel cutting device is prolonged. The strip steel cutting device can adapt to the cutting operation of strip steel of different specifications, and the cutting knife can be selected and matched without disassembling, assembling and replacing the cutting roller, so that the workload of workers is reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel processing equipment, in particular to a strip steel cutting mechanism. Background Technique

[0002] After the strip steel is produced and wound up, it is generally a steel coil with a relatively wide width. During actual use, strip steels of different width specifications will be encountered. At this time, the whole strip steel needs to be cut. At this time, a roll of wide strip steel will be cut into multiple narrow strip steels. At present, when cutting the strip steel, first the steel coil needs to be unrolled, and then the conveying device conveys the unrolled strip steel in sequence. According to the specifications of the required narrow strip steel, a cutting roller is arranged in the cutting part, and cutting knives are arranged on the cutting roller according to production requirements. Generally, the number and position of the cutting knives are basically fixed, which results in that each group of cutting rollers and the cutting knives on them can only adapt to the cutting operation of strip steel of one specification. When cutting strip steel of other specifications, the original cutting roller needs to be disassembled and a new cutting roller needs to be assembled. Such operation is very inconvenient and brings great inconvenience to the production work. Content of the Utility Model

[0003] The purpose of the utility model is to avoid the deficiencies of the prior art and provide a strip steel cutting mechanism, thereby effectively solving the deficiencies existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a strip steel cutting mechanism, including a mounting frame placed on a conveying device, linear guide rails are arranged between the mounting frames, a number of independently movable movable frames are evenly arranged on the linear guide rails, a liftable tool holder is arranged on each movable frame, a cutting knife is arranged on the tool holder, and sensors extending outward are respectively arranged on both sides of the movable frame, and the sensors are used to prevent collision between the movable frames.

[0005] Further, the movable frame includes a cross plate, a slider is arranged at the upper end of the cross plate, the slider is installed on the linear guide rail, a vertical plate is arranged at the lower end of the cross plate, the rear end of the tool holder is hinged on the vertical plate, the front end of the tool holder extends to the front side of the vertical plate, the cutting knife is installed at the front end of the tool holder, the cutting knife is driven to rotate by a motor, and an adjusting air cylinder for driving the tool holder to swing along its hinge axis is also arranged on the cross plate.

[0006] Further, a connecting rod extending forward is arranged at the front end of the cross plate, the end of the cylinder barrel of the adjusting air cylinder is hinged to the connecting rod, the piston rod of the adjusting air cylinder is arranged vertically downward, and a hinge joint is arranged at the end of the piston rod, and the hinge joint is hinged to the front end of the tool holder.

[0007] Further, an installation plate is also provided on the cross plate at a position corresponding to the rear side of the slider. A displacement motor is provided at the rear side of the installation plate. A rack is provided on the installation frame at a position corresponding to the rear side of the linear guide rail. A gear is provided on the rotating shaft of the displacement motor. The gear meshes with the rack.

[0008] Further, the sensors are arranged on both sides of the slider. The sensing ends of the sensors on both sides are arranged facing the outside of the slider. The sensors are used to control the operation of the displacement motor.

[0009] Further, the sensors on both sides are arranged in a staggered manner. The left sensor is located at the lower part on the left side of the slider, and the right sensor is located at the upper part on the right side of the slider.

[0010] Further, the sensor is a proximity switch.

[0011] Further, the motor and the cutting knife are respectively arranged on both sides of the front end of the tool holder. The rotating shaft of the motor passes through the tool holder. The cutting knife is installed on the rotating shaft. A stop block for clamping the cutting knife on the rotating shaft is provided at the end of the rotating shaft. The stop block is fixedly arranged at the end of the rotating shaft through a plurality of quick-release locking pins.

[0012] Further, the rotating shaft is a stepped shaft rod with a wider left part and a narrower right part. The wider part of the rotating shaft passes through the tool holder. The cutting knife is installed on the narrower part of the rotating shaft. The quick-release locking pins are installed at the end of the narrower part of the rotating shaft.

[0013] Further, the quick-release locking pins are evenly arranged along the circumferential direction of the end of the rotating shaft. The quick-release locking pin includes a pin rod fixedly arranged at the end of the rotating shaft. The thickness of the stop block is the same as the length of the pin rod. An installation hole adapted to the pin rod is provided on the stop block. A boss is provided at one end of the pin rod passing through the installation hole. The diameter of the boss is smaller than the diameter of the pin rod. A limiting ring is sleeved at the boss. The inner diameter of the limiting ring is larger than the diameter of the boss and its outer diameter is the same as the diameter of the pin rod. A lock nut for fixing the position of the limiting ring is also provided at the end of the boss.

[0014] Further, a threaded rod is provided at one end of the lock nut connected to the boss. A threaded hole adapted to the threaded rod is provided at the end of the boss. The lock nut is threadedly connected to the end of the boss.

[0015] The above technical solution of the present utility model has the following beneficial effects: By installing several movable frames that can move independently on the mounting frame, and arranging a liftable tool holder and a cutting knife on the movable frame, according to the required cutting specifications of the strip steel, the corresponding number of cutting knives is selected and moved to the corresponding workstations, while the unused tool holders and cutting knives are lifted to avoid contact with the strip steel. In this way, it can adapt to the cutting operations of strip steels of different specifications, and the selection of cutting knives can be completed without disassembling and replacing the cutting rollers, thereby reducing the workload of workers and greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 an enlarged view of part A in

[0018] Figure 3 is a schematic cross-sectional installation view at the stopper of an embodiment of the present utility model;

[0019] Figure 4 is Figure 3 an enlarged view of part B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0021] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0022] As Figures 1-4 shown, a strip steel cutting mechanism in this embodiment includes a mounting frame 1 placed on a conveying device. Linear guide rails 2 are arranged between the mounting frames 1. A number of movable frames that can move independently are evenly arranged on the linear guide rails 2. A liftable tool holder 3 is arranged on each movable frame. A cutting knife 4 is arranged on the tool holder 3. Sensors 5 extending outward are respectively arranged on both sides of the movable frame. The sensors 5 are used to prevent collisions between the movable frames.

[0023] The movable frame includes a horizontal plate 6. At the upper end of the horizontal plate 6, there is a slider 7 which is installed on the linear guide rail 2. At the lower end of the horizontal plate 6, there is a vertical plate 8. The rear end of the tool holder 3 is hinged to the vertical plate 8. The front end of the tool holder 3 extends to the front side of the vertical plate 8. The cutting knife 4 is installed at the front end of the tool holder 3. The cutting knife 4 is driven to rotate by a motor 9. On the horizontal plate 6, there is also an adjusting cylinder 10 used to drive the tool holder 3 to swing along its hinge axis.

[0024] At the front end of the horizontal plate 6, there is a connecting rod 11 extending forward. The end of the cylinder barrel of the adjusting cylinder 10 is hinged to the connecting rod 11. The piston rod of the adjusting cylinder 10 is arranged vertically downward. At the end of the piston rod, there is a hinge joint 12 which is hinged to the front end of the tool holder 3.

[0025] On the horizontal plate 6, at a position corresponding to the rear side of the slider 7, there is also an installation plate 13. At the rear side of the installation plate 13, there is a displacement motor 14. On the installation frame 1, at a position corresponding to the rear side of the linear guide rail 2, there is a rack 15. On the rotating shaft of the displacement motor 14, there is a gear 16 which meshes with the rack 15. When the displacement motor 14 starts, the gear 16 at its end rotates and moves along the rack 15, thereby driving the entire movable frame to move left and right along the linear guide rail 2, and further realizing the function of adjusting the position of the cutting knife 4.

[0026] The sensors 5 are arranged on both sides of the slider 7. The sensing ends of the sensors 5 on both sides are arranged towards the outside of the slider 7. The sensors 5 are used to control the operation of the displacement motor 14.

[0027] The sensors 5 on both sides are arranged in a staggered manner. The left sensor 5 is located at the lower part on the left side of the slider 7, and the right sensor 5 is located at the upper part on the right side of the slider 7.

[0028] Preferably, the sensor 5 is a proximity switch.

[0029] The motor 9 and the cutting knife 4 are arranged on both sides of the front end of the tool holder 3 respectively. The rotating shaft 17 of the motor 9 passes through the tool holder 3. The cutting knife 4 is installed on the rotating shaft 17. At the end of the rotating shaft 17, there is a stop block 18 used to clamp the cutting knife 4 on the rotating shaft 17. The stop block 18 is fixedly arranged at the end of the rotating shaft 17 through a number of quick-installation lock pins.

[0030] The rotating shaft 17 is a stepped shaft with a wider left part and a narrower right part. The wider part of the rotating shaft 17 passes through the tool holder 3. The cutting knife 4 is installed on the narrower part of the rotating shaft 17. The quick-installation lock pins are installed at the end of the narrower part of the rotating shaft 17.

[0031] The quick-installation lock pins are evenly arranged circumferentially at the end of the rotating shaft 17. The quick-installation lock pin includes a pin rod 19 fixedly arranged at the end of the rotating shaft 17. The thickness of the stop block 18 is the same as the length of the pin rod 19. An installation hole adapted to the pin rod 19 is arranged on the stop block 18. A boss 20 is arranged at one end of the pin rod 19 passing through the installation hole. The diameter of the boss 20 is smaller than that of the pin rod 19. A limit ring 21 is sleeved at the boss. The inner diameter of the limit ring 21 is larger than the diameter of the boss 20 and its outer diameter is the same as that of the pin rod 19. A lock nut 22 for fixing the position of the limit ring 21 is also arranged at the end of the boss 20.

[0032] A threaded rod 23 is arranged at one end of the lock nut 22 connected to the boss 20. A threaded hole adapted to the threaded rod 23 is arranged at the end of the boss 20. The lock nut 22 is threadedly connected to the end of the boss 20.

[0033] When the cutting knife 4 is installed, first install the cutting knife on the rotating shaft 17 of the motor 9, and then install the stop block 18 at the end of the rotating shaft 17. The quick-installation lock pin at the end of the rotating shaft 17 passes through the stop block 18. When the stop block 18 presses the cutting knife 4 tightly against the rotating shaft 17, one end of the boss 20 on the quick-installation lock pin just passes through the stop block 18 and extends out on one side. At this time, loosen the lock nut 22 at the end of the pin rod 19 to release its restriction on the limit ring 21. At this time, the inner wall on one side of the limit ring 21 contacts the outer wall of the boss 20, and one end of the limit ring 21 will extend outwards on the whole quick-installation lock pin. That is to say, at this time, the limit ring 21 is in an eccentric state relative to the pin rod 19. Then tighten the lock nut 22 and clamp the eccentric limit ring 21 at the boss 20. At this time, the stop block 18 is fixed at the end of the rotating shaft 17. When the cutting knife 4 needs to be disassembled and replaced, just loosen the lock nut 22 again and reset the limit ring 21 to the position coaxial with the pin rod 19, and the stop block 18 can be removed. The whole process is very convenient to operate, and the operation can be completed without the aid of tools, saving time and effort.

[0034] The working principle of the present utility model is as follows: First, according to the requirements of the strip cutting specifications, a corresponding number of cutting knives 4 are selected. By controlling the displacement motor 14, the entire movable frame and the tool holders 3 and cutting knives 4 thereon can be manipulated to move in position, so as to meet the cutting requirements. Subsequently, the adjusting cylinder 10 is controlled. When the piston rod of the adjusting cylinder 10 retracts, the tool holders 3 that do not need to work can rotate upward along the hinge axis, and then the cutting knives 4 are lifted upward. In this way, when the strip is being conveyed, the cutting knives 4 that do not need to work will not come into contact with the strip, ensuring the normal progress of the cutting work. After the positions of all the cutting knives 4 are determined, the strip is conveyed on the conveying device, and the motor 9 on the tool holder 3 for working is started to control the corresponding cutting knife 4 to rotate. When the strip passes through the mounting frame 1, the working cutting knife 4 will cut the entire strip. When it is necessary to change the cutting specifications of the strip, only a corresponding number of tool holders 3 and cutting knives 4 need to be reselected and controlled to move to the corresponding cutting stations, and the cutting operation can be quickly completed. The redundant cutting knives 4 will be lifted by the adjusting cylinder 10 and will not come into contact with the strip. Therefore, the present utility model can quickly complete the replacement of the number and position of the cutting knives 4 according to the production requirements without replacing the cutting rollers and cutting knives, greatly improving the working efficiency of the strip cutting equipment.

[0035] The sensors 5 are arranged on both sides of the slider 7 to ensure the safe displacement of the movable frame. The displacement motor 14 is controlled to drive a movable frame to perform position adjustment operations along the linear guide 2. Once the equipment malfunctions and causes the movable frame to have excessive displacement, the moving movable frame is likely to collide with other stationary movable frames, which is likely to cause damage to the movable frame and the tool holders 3 and cutting knives 4 thereon. After the sensors 5 are arranged on both sides of the slider 7, when the movable frame has excessive displacement due to misoperation, the sensor 5 will first come into contact with the slider 7 on the adjacent stationary movable frame. After the stationary slider 7 touches the sensing end of the sensor 5 on the moving slider 7, the sensor 5 will send a signal to control its corresponding displacement motor 14 to stop working, which can avoid the rigid collision between adjacent movable frames and thus avoid the occurrence of accidents.

[0036] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A strip cutting mechanism, characterized in that: It includes a mounting frame placed on a conveying device, a linear guide rail is arranged between the mounting frames, a plurality of independently movable movable frames are evenly arranged on the linear guide rail, each of the movable frames is provided with a liftable knife seat, the knife seat is provided with a cutting knife, and sensors extending outwards thereof are respectively arranged on both sides of the movable frames, and the sensors are used to prevent collisions between the movable frames.

2. A strip steel cutting mechanism according to claim 1, characterized in that: The movable frame includes a horizontal plate, a slider is provided at the upper end of the horizontal plate, and the slider is installed on the linear guide rail. A vertical plate is provided at the lower end of the horizontal plate. The rear end of the knife seat is hinged on the vertical plate, and the front end of the knife seat extends to the front side of the vertical plate. The cutting knife is installed at the front end of the knife seat, and the cutting knife is driven to rotate by a motor. The horizontal plate is also provided with an adjusting cylinder for driving the knife seat to swing along its hinge axis.

3. A strip steel cutting mechanism according to claim 2, characterized in that: A connecting rod extending forward is arranged at the front end of the horizontal plate, and the end of the adjusting cylinder barrel is hinged to the connecting rod. The piston rod of the adjusting cylinder is arranged vertically downward, and a hinged head is arranged at the end of the piston rod, and the hinged head is hinged to the front end of the knife seat.

4. A strip steel cutting mechanism according to claim 2, characterized in that: A mounting plate is also provided on the transverse plate at a position corresponding to the rear side of the slider, a shift motor is provided on the rear side of the mounting plate, a rack is provided on the mounting frame at a position corresponding to the rear side of the linear guide rail, a gear is provided on the rotating shaft of the shift motor, and the gear and the rack are meshed with each other.

5. A strip steel cutting mechanism according to claim 4, characterized in that: The sensors are arranged on both sides of the slider, and the sensing ends of the sensors on both sides are arranged toward the outside of the slider. The sensors are used to control the operation of the shift motor.

6. A strip steel cutting mechanism according to claim 5, characterized in that: The sensors on both sides are staggered, the left sensor is located at the lower part of the left side of the slider, and the right sensor is located at the upper part of the right side of the slider.

7. A strip steel cutting mechanism according to claim 6, characterized in that: The sensor is a proximity switch.

8. A strip steel cutting mechanism according to claim 2, characterized in that: The motor and the cutting knife are arranged on both sides of the front end of the knife seat, the rotating shaft of the motor passes through the knife seat, the cutting knife is installed on the rotating shaft, and a stopper is provided at the end of the rotating shaft for clamping the cutting knife on the rotating shaft. The stopper is fixed to the end of the rotating shaft by a plurality of quick-release locking pins.

9. A strip steel cutting mechanism according to claim 8, characterized in that: The quick-release locking pin is evenly arranged along the circumference of the end of the rotating shaft, and the quick-release locking pin includes a pin rod fixedly mounted on the end of the rotating shaft, the thickness of the block is the same as the length of the pin rod, and the block is provided with a mounting hole adapted to the pin rod, and a boss is provided at one end of the pin rod passing through the mounting hole, and the diameter of the boss is smaller than the diameter of the pin rod, and a limiting ring is sleeved on the boss, and the inner diameter of the limiting ring is larger than the diameter of the boss and the outer diameter thereof is the same as the diameter of the pin rod, and a locking cap for fixing the position of the limiting ring is also provided at the end of the boss.

10. A strip steel cutting mechanism according to claim 9, characterized in that: One end of the locking cap connected to the boss is provided with a threaded rod, the end of the boss is provided with a threaded hole matched with the threaded rod, and the locking cap is threadedly connected to the end of the boss.

Images