Adjustable cutting device for aluminum-zinc plated steel coil

Abstract

The invention discloses an adjustable cutting device for an aluminum-zinc plated steel coil, and relates to the technical field of steel coil machining. The adjustable cutting device for the aluminum and zinc plated steel coil comprises a portal frame and further comprises first rollers, the first rollers are symmetrically installed on the inner side of the portal frame, the two first rollers rotate in the output direction of a steel coil body, and the two first rollers slide oppositely in the vertical direction of the portal frame; hydraulic drive cutting knives matched with each other are installed on the first roller and used for cutting the steel coil body. According to the adjustable cutting device for the aluminum-zinc-plated steel coil, as the linear speed when the hydraulic driving cutter rotates is always consistent with the conveying speed of the steel coil main body, the first roller slides on the inner side of the portal frame, so that the first roller can deviate from the steel coil main body, namely, the hydraulic driving cutter can perform empty cutting on the first roller; the length of the steel coil body passing through the portal frame is controlled, and therefore the cutting length of the steel coil body is controlled.

Description

Technical Field

[0001] The invention relates to the technical field of steel coil processing, and in particular to an adjustable cutting device for galvanized steel coils. Background Art

[0002] The surface of galvanized steel sheet is uniquely smooth, flat and with gorgeous star patterns, and the base color is silver-white. The special coating structure makes it have excellent corrosion resistance. In the processing of galvanized steel sheet, the packing steel strip needs to be unwound first, and then the steel strip needs to be leveled and cut in turn.

[0003] The Chinese patent with publication number CN105364158B discloses a baling steel strap unwinding and shearing device. The device is provided with an upper shearing knife and a lower shearing knife on the shearing brackets on the upper and lower sides of the discharge port, respectively. The upper shearing knife is driven to rise and fall vertically by the rotation of the shearing cam, so that the baling steel strap can be efficiently and accurately sheared, thereby improving the efficiency and quality of the baling steel strap unwinding and shearing, and meeting the needs of use.

[0004] However, in actual use, we found that since the steel coil has a certain thickness, if the cutting blade cannot move synchronously with the steel coil during the unwinding process, the cut surface will be uneven, and the thrust generated in the conveying direction of the steel coil will act on the cutting knife, reducing the service life of the cutting knife. Therefore, in the Chinese patent publication number CN110508866B, a combined shear blade mode rolling shear machine was announced. The invention provides appropriate clamping force by pressing the oil cylinder through the pressure roller, and the pressure roller provides torque follower by the friction between the strip steel. The speed difference between the strip steel transmission speed and the shear body translation speed is compensated by the rolling speed of the pressure roller. When the difference between the unwinding speed of the strip steel and the pursuit speed of the shear body is zero, a shearing command is issued, and the shear blade gap adjustment device is connected to the upper knife table of the rolling shear device to adjust the gap between the upper and lower shear blades to obtain the optimal shearing quality.

[0005] However, in actual use, since the rotation speed of the first roller needs to be controlled to be the same as the unwinding speed of the steel coil when shearing the steel coil, this increases the difficulty in adjusting the shearing specifications of the steel coil. In addition, traditional equipment controls the rotation speed of the first roller through a motor, which has high requirements on the quality and precision of the motor, thereby increasing the cost of the equipment. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides an adjustable cutting device for galvanized aluminum steel coils, which solves the problems raised in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adjustable cutting device for aluminum-zinc-coated steel coils, comprising a gantry and a first roller, wherein the first roller is symmetrically installed on the inner side of the gantry, the two first rollers rotate along the output direction of the steel coil body, and the two first rollers slide vertically relative to each other along the gantry, and the first rollers are equipped with mutually adapted hydraulically driven cutting knives for cutting the steel coil body; a friction pressure cylinder, wherein the friction pressure cylinder is symmetrically installed on one side of the gantry, and the friction pressure cylinder is arranged upstream of the first roller, and the outer sides of the two friction pressure cylinders are against the steel coil body, so that the conveying speed of the steel coil body is the same as the linear speed of the edge of the friction pressure cylinder; a transmission assembly, wherein the transmission assembly is arranged between the first roller and the friction pressure cylinder, so as to transmit the linear speed at the edge of the friction pressure cylinder to the first roller, so that the linear speed of the hydraulically driven cutting knife on the first roller is the same as the speed of the steel coil body.

[0008] Furthermore, it also includes side plates, which are symmetrically arranged at both ends of the friction pressure cylinder, and a third slider is slidably installed on the side plates; a horizontal guide rod, which is installed on the inner side of the side plate, and both ends of the horizontal guide rod are slidably connected to the side plates in the vertical direction; wherein the third slider is provided with a sliding hole, and the sliding hole is slidably connected to the horizontal guide rod.

[0009] Furthermore, a linkage roller is rotatably mounted on the third slider, a first support arm is rotatably connected to the linkage roller, and the other end of the first support arm is rotatably connected to the first roller; a second support arm is rotatably mounted on the linkage roller, and one end of the second support arm is rotatably connected to the friction pressure cylinder.

[0010] Furthermore, the transmission assembly includes an active roller fixed at both ends of the friction pressure cylinder and rotatably connected to the second support arm, and a driven roller fixed at both ends of the first roller and rotatably connected to the first support arm; a spring is installed on the outer side of the horizontal guide rod between the third slider and one end of the side plate, and the elastic force of the spring is used to drive the third slider to move away from the gantry; the active roller is located inside the first support arm and a fixed sleeve is provided with a driving wheel, and the driven roller is located inside the second support arm and a fixed sleeve is provided with a driven wheel, and a transmission member is provided between the driven roller and the driven wheel.

[0011] Furthermore, an output roller is provided upstream of the friction pressure cylinder, and the output roller is used to drive the steel coil body to unwind. A speed sensor is installed at one end of one of the friction pressure cylinders, and the speed sensor detects the rotation speed of the friction pressure cylinder.

[0012] Further, connecting plates are installed on both sides of the side plate. One end of each connecting plate extends to the other side of the gantry. A discharge rotating shaft is rotatably installed between the two connecting plates. There are two discharge rotating shafts in total, and second rollers are installed on both of the two discharge rotating shafts. A discharge conveyor belt is arranged between the two second rollers. The upper surface of the discharge conveyor belt abuts against the lower surface of the cut steel coil body for outputting the cut steel coil body. A belt pulley is fixedly sleeved on one of the discharge rotating shafts and the driving roller, and a fourth synchronous transmission belt is installed between the two belt pulleys.

[0013] Further, the transmission member includes a linkage wheel provided on the linkage roller. There are two linkage wheels on the same first roller. A first synchronous transmission belt is installed between one of the linkage wheels and the driving wheel, and a second synchronous transmission belt is installed between the other linkage wheel and the driven wheel.

[0014] Further, the transmission member includes a third synchronous transmission belt provided between the driving wheel and the driven wheel. A limiting roller is rotatably installed at the connection between the inner side of the first support arm and the second support arm. The limiting rollers are symmetrically arranged on both sides of the third synchronous transmission belt for restricting the limiting rollers when the angle between the second support arm and the first support arm changes.

[0015] Further, first guide grooves are provided on both sides of the gantry. A first bidirectional lead screw is rotatably installed inside the two first guide grooves, and first sliders are symmetrically and slidably installed inside the first guide grooves. The first sliders are rotatably connected to one end of the driven roller and are threadedly connected to the first bidirectional lead screw. A transmission box is provided at the top of the gantry, and a first driving component is provided inside the transmission box for driving the first bidirectional lead screw to rotate. The first driving component includes a servo motor fixed to one end of the transmission box. A transmission shaft is installed at the output end of the servo motor. First bevel gears are symmetrically installed on the transmission shaft. The upper end of the first bidirectional lead screw extends into the transmission box and is fixedly sleeved with a second bevel gear. The second bevel gear meshes with the first bevel gear.

[0016] Further, a second guide groove is formed on the side plate. Second sliders rotatably connected to the driving roller are symmetrically and slidably installed inside the second guide groove, and a second bidirectional lead screw threadedly connected to the second sliders is rotatably installed inside the second guide groove. A base is provided at the bottom of the gantry and the side plate. Universal wheels are installed at the four corners of the base, and a transmission cavity is formed inside the base. A second driving component is installed inside the transmission cavity. The second driving component is used for driving the two second bidirectional lead screws to rotate synchronously and in opposite directions. The top orthographic projection of the side plate is a "U" - shaped structure, and vertical guide chutes are provided on both sides of the side plate. Fourth sliders are installed at both ends of the horizontal guide rod, and the fourth sliders are slidably connected to the vertical guide chutes.

[0017] The present invention has the following beneficial effects: (1) The adjustable cutting device for galvanized steel coil utilizes the friction between the friction pressure cylinder and the main body of the steel coil to make the linear speed at the edge of the friction pressure cylinder consistent with the linear speed of the main body of the steel coil. Then, a transmission effect is formed between the friction pressure cylinder and the first roller through the transmission component, so that the hydraulically driven cutting knife on the first roller is consistent with the linear speed of the main body of the steel coil. The linear speed of the hydraulically driven cutting knife during rotation can be accurately controlled, thereby avoiding the use of high-quality servo motor drive and reducing production costs.

[0018] (2) The adjustable cutting device for galvanized steel coils has a hydraulically driven cutting blade that rotates at a linear speed that is consistent with the conveying speed of the steel coil body. The first roller slides on the inner side of the gantry so that the first roller can deviate from the steel coil body. This allows the hydraulically driven cutting blade to perform air cutting on the first roller, thereby changing the time that the first roller is separated from the steel coil body. According to the equation distance = speed x time, the length of the steel coil body passing through the gantry is controlled, thereby controlling the cutting length of the steel coil body, so as to facilitate the adjustment of the cutting specifications of the steel coil body.

[0019] (3) The adjustable cutting device for galvanized steel coils adjusts the distance between the two second sliders on the same side, thereby changing the distance between the two friction pressing cylinders, thereby facilitating the cutting of steel coil bodies of different thicknesses and improving the practicability of the equipment.

[0020] (4) The adjustable cutting device for galvanized steel coil detects the rotation speed of the friction cylinder through a speed sensor and then compares it with the output speed of the output roller. When the rotation speed of the output roller is greater than that of the friction cylinder, it indicates that slippage occurs between the friction cylinder and the main body of the steel coil. At this time, it is necessary to adjust the distance between the two relative friction cylinders to increase the friction force between the friction cylinder and the main body of the steel coil until the rotation speed of the friction cylinder is the same as that of the output roller, thereby ensuring that the main body of the steel coil can stably drive the friction cylinder to rotate.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Another perspective of the picture; Figure 3 It is a schematic diagram of the installation structure of the side panel in the present invention; Figure 4 For the present invention Figure 3 The main view of Figure 5 For the present invention Figure 4 A magnified view of point A; Figure 6 It is a structural schematic diagram of the side plate in the present invention; Figure 7 It is a schematic diagram of the transmission structure between the active roller and the driven roller in the first embodiment of the present invention; Figure 8 For the present invention Figure 7 The main view of Fig. 9 It is a schematic diagram of the internal structure of the transmission box in the present invention; Fig.10 It is a schematic diagram of the internal structure of the transmission cavity in the present invention; Fig.11 It is a schematic diagram of the transmission structure between the active roller and the driven roller in the second embodiment of the present invention; Fig.12 For the present invention Fig.11 main view.

[0023] In the figure, 1, base; 2, gantry; 3, first guide groove; 4, first slider; 5, first roller; 6, first bidirectional screw rod; 7, transmission box; 8, first drive assembly; 81, servo motor; 82, transmission shaft; 83, first bevel gear; 84, second bevel gear; 9, steel coil body; 10, side plate; 11, friction pressure cylinder; 12, second guide groove; 13, second slider; 14, second bidirectional screw rod; 15, second drive assembly; 16, third slider; 17, horizontal guide rod; 18, vertical guide slide groove; 19, fourth slider; 20, hydraulically driven cutting knife; 21 , active roller; 22, second support arm; 23, first support arm; 24, driven roller; 25, linkage roller; 26, spring; 27, active wheel; 28, linkage wheel; 29, driven wheel; 30, first synchronous transmission belt; 31, second synchronous transmission belt; 32, transmission cavity; 33, third synchronous transmission belt; 34, limit roller; 35, speed sensor; 36, output roller; 37, connecting plate; 38, discharge conveyor belt; 39, supporting diagonal rod; 40, connecting slider; 41, connecting slide; 42, discharge shaft; 43, pulley; 44, fourth synchronous transmission belt; 45, second roller. DETAILED DESCRIPTION

[0024] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] Embodiment 1 See also Figure 1-Figure 10 The embodiment of the present invention provides a technical solution: an adjustable cutting device for galvanized aluminum steel coils, comprising a gantry 2 and a first roller 5, wherein the first roller 5 is symmetrically mounted on the inner side of the gantry 2, and two first rollers 5 are spaced apart on the gantry 2 in the height direction, and a steel coil body 9 passes between the two first rollers 5, and the two first rollers 5 slide vertically relative to each other along the gantry 2, and mutually adapted hydraulically driven cutting knives 20 are mounted on the first rollers 5 for cutting the steel coil body 9. It should be noted that during cutting, the hydraulically driven cutting knives 20 need to be fed perpendicularly to the steel coil body 9. In addition, by controlling the linear speed of the first roller 5 during rotation, the linear speed of the hydraulically driven cutting knives 20 thereon during rotation is consistent with the conveying speed of the steel coil body 9. It should be noted that in this solution, the longitudinal extension distance of the hydraulically driven cutting knives 20 is The distance between the hydraulically driven cutting knife 20 and the outer edge of the first roller 5 is much smaller than the inner diameter of the first roller 5, so as to avoid the error between the linear velocity of the blade and the linear velocity of the outer edge of the first roller 5 when the hydraulically driven cutting knife 20 is extended and retracted, which affects the cutting effect. At the same time, since the hydraulically driven cutting knife 20 cuts the steel coil body 9 for a very short time, it can be considered that the blade of the hydraulically driven cutting knife 20 and the steel coil body 9 are stationary during the cutting process, so that it will not hinder the transportation of the steel coil body 9. The first roller 5 slides on the inner side of the gantry 2, so that the first roller 5 can deviate from the steel coil body 9, that is, the hydraulically driven cutting knife 20 can perform air cutting on the first roller 5, so as to change the time length of the first roller 5 being separated from the steel coil body 9. According to the distance = speed x time, the length of the steel coil body 9 passing through the gantry 2 is controlled, thereby controlling the cutting length of the steel coil body 9, so as to facilitate the adjustment of the cutting specifications of the steel coil body 9. The hydraulically driven cutting knife 20 is an existing hydraulic cutting knife.

[0027] In addition, the adjustable cutting device for aluminum-zinc-coated steel coils provided in this embodiment also includes a friction pressure cylinder 11, which is installed on one side of the gantry 2. There are two friction pressure cylinders 11 arranged side by side in the height direction. The steel coil body 9 passes between the two friction pressure cylinders 11, and the friction pressure cylinder 11 is arranged upstream of the first roller 5. It can not only capture a more stable conveying speed of the steel coil body 9, but also provide support when the steel coil body 9 is cut, thereby improving the stability of the cutting process of the steel coil body 9. The outer sides of the two friction pressure cylinders 11 are against the steel coil body 9, so that the conveying speed of the steel coil body 9 is the same as the linear speed of the edge of the friction pressure cylinder 11.

[0028] In addition, in order to realize the transmission between the first roller 5 and the friction cylinder 11, the adjustable cutting device for the aluminum-zinc-coated steel coil provided in this embodiment also includes a transmission component, which is arranged between the first roller 5 and the friction cylinder 11 to transmit the linear velocity at the edge of the friction cylinder 11 to the first roller 5, so that the linear velocity of the hydraulically driven cutting knife 20 on the first roller 5 is the same as the speed of the steel coil body 9.

[0029] In the present scheme, by utilizing the friction force between the friction pressure cylinder 11 and the steel coil body 9, the linear speed at the edge of the friction pressure cylinder 11 is consistent with the linear speed of the steel coil body 9, and then a transmission effect is formed between the friction pressure cylinder 11 and the first roller 5 through the transmission component, so that the linear speed of the hydraulically driven cutting knife 20 on the first roller 5 is always consistent with that of the steel coil body 9, so that the linear speed of the hydraulically driven cutting knife 20 during rotation can be accurately controlled to ensure the smoothness of the incision of the steel coil body 9. In addition, the thrust on the hydraulically driven cutting knife 20 during the transportation of the steel coil body 9 can be avoided to increase the service life of the hydraulically driven cutting knife 20. During use, since the linear speed of the hydraulically driven cutting knife 20 during rotation is consistent with the transportation speed of the steel coil body 9, the control system only needs to control the hydraulically driven cutting knife 20 to cut when it contacts the steel coil body 9, which reduces the control difficulty.

[0030] like Figure 1 - Figure 4 As shown, the adjustable cutting device for the galvanized steel coil provided in this embodiment also includes a side plate 10, which is symmetrically arranged at both ends of the friction pressure cylinder 11, and a third slider 16 is slidably installed on the side plate 10, and a horizontal guide rod 17 is installed on the inner side of the side plate 10, the horizontal guide rod 17 is parallel to the conveying direction of the steel coil body 9, and both ends of the horizontal guide rod 17 are slidably connected to the side plate 10 in the vertical direction, wherein the third slider 16 is provided with a sliding hole, and the sliding hole and the horizontal guide rod 17 are slidably connected.

[0031] like Figure 1 - Figure 6 As shown, in order to compensate for the change of the straight-line distance between the friction cylinder 11 and the first roller 5, a linkage roller 25 is rotatably installed on the third slider 16, and a first support arm 23 is rotatably connected to the linkage roller 25. The other end of the first support arm 23 is rotatably connected to the first roller 5. A second support arm 22 is rotatably installed on the linkage roller 25. One end of the second support arm 22 is rotatably connected to the friction cylinder 11. The first support arm 23 and the second support arm 22 are connected by a bearing to facilitate the change of the angle between the first support arm 23 and the second support arm 22, thereby coping with the change of the straight-line distance between the friction cylinder 11 and the first roller 5.

[0032] like Figure 3 - Figure 8As shown, the transmission assembly provided in this embodiment includes an active roller 21 fixed at both ends of the friction cylinder 11 and rotatably connected to the second support arm 22, and a driven roller 24 fixed at both ends of the first roller 5 and rotatably connected to the first support arm 23.

[0033] To prevent the first support arm 23 and the second support arm 22 from excessively moving toward the gantry 2, a spring 26 is installed between the third slider 16 and one end of the side plate 10 on the outside of the horizontal guide rod 17. The elastic force of the spring 26 is used to drive the third slider 16 to move away from the gantry 2. The third slider 16 is pushed by the elastic force of the spring 26, so that the third slider 16 has a tendency to move away from the gantry 2, which is beneficial for the third slider 16 to move away from the gantry 2 when the angle between the first support arm 23 and the second support arm 22 changes, thereby preventing the first support arm 23 and the second support arm 22 from excessively moving toward the gantry 2.

[0034] In addition, a driving wheel 27 is provided on the driving roller 21 and is located in a fixed sleeve inside the first support arm 23. Preferably, the outer diameter of the driving wheel 27 is the same as the outer diameter of the friction cylinder 11. A driven wheel 29 is provided outside the driven roller 24 and is located in a fixed sleeve inside the second support arm 22. Preferably, the outer diameter of the driven wheel 29 is the same as the outer diameter of the first roller 5 to ensure that the belt transmission speed between the driving wheel 27 and the driven wheel 29 is the conveying speed of the steel coil body 9. A transmission part is provided between the driven roller 24 and the driven wheel 29.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, in order to realize the unwinding of the steel coil body 9, an output roller 36 is provided upstream of the friction pressing cylinder 11. The output roller 36 is used to drive the steel coil body 9 to unwind, and a flattening mechanism can also be provided between the output roller 36 and the unwinding machine to prevent the wave shape of the steel coil body from affecting the cutting accuracy. In addition, in order to ensure the stability of the transmission effect between the friction pressing cylinder 11 and the steel coil body 9, a speed sensor 35 is installed at one end of one of the friction pressing cylinders 11. The speed sensor 35 detects the rotation speed of the friction pressing cylinder 11. The speed sensor 35 detects the rotation speed of the friction pressing cylinder 11. The output speed of roller 36 is known, and the rotation speed of friction cylinder 11 is compared with the output speed of output roller 36. When the rotation speed of output roller 36 is greater than the rotation speed of friction cylinder 11, it indicates that slippage occurs between friction cylinder 11 and steel coil body 9. At this time, the distance between two relative friction cylinders 11 is adjusted to increase the friction force between friction cylinder 11 and steel coil body 9 until the rotation speed of friction cylinder 11 is the same as that of output roller 36, thereby ensuring that steel coil body 9 can stably drive friction cylinder 11 to rotate, thereby providing a stable speed basis for subsequent cutting of steel coil body 9.

[0036] In the present scheme, it should be noted that the outer diameters of the friction pressing cylinder 11 and the output roller 36 are preferably the same, so as to facilitate the speed comparison of the friction pressing cylinder 11 and the output roller 36, thereby facilitating operation. Of course, in the case of different outer diameters, they can be converted according to the conversion formula between angular velocity and linear velocity before comparison.

[0037] like Figure 1 - Figure 4 As shown, in order to realize the output of the steel coil body 9 after cutting, connecting plates 37 are installed on both sides of the side plate 10 provided in this embodiment, and one end of the connecting plate 37 extends to the other side of the gantry 2. Preferably, a connecting slide groove 41 is opened on the outside of the gantry 2, and a connecting slider 40 is slidably installed inside the connecting slide groove 41, and a supporting diagonal rod 39 is installed on the outside of the connecting slider 40. The supporting diagonal rod 39 is fixedly connected to the end of the connecting plate 37 away from the side plate 10, and a buffer can be installed inside the connecting slide groove 41 to improve the stability of the connecting plate 37 when in use. A discharge shaft 42 is rotatably installed between the two connecting plates 37. There are two discharge shafts 42, and second rollers 45 are installed on the two discharge shafts 42. A discharge conveyor belt 38 is provided between the two second rollers 45, and the upper surface of the discharge conveyor belt 38 is against the lower surface of the cut steel coil body 9 for outputting the cut steel coil body 9.

[0038] To achieve the driving of the discharge conveyor belt 38, a pulley 43 is fixedly mounted on one of the discharge shafts 42 and the active roller 21, and a fourth synchronous transmission belt 44 is installed between the two pulleys 43. The active roller 21 drives the discharge shaft 42 to rotate through the fourth synchronous transmission belt 44, and further rotates the discharge conveyor belt 38. In this scheme, it should be noted that in order to avoid the influence of the steel coil body 9 on the subsequent cutting after cutting, it is necessary to control the linear speed of the discharge conveyor belt 38 to be greater than the unwinding speed of the steel coil body 9. Therefore, it is preferred that the outer diameter of the pulley 43 is the same as the outer diameter of the friction pressure cylinder 11, and the outer diameter of the second roller 45 is twice the outer diameter of the pulley 43, so that the linear speed of the discharge conveyor belt 38 is greater than the unwinding speed of the steel coil body 9.

[0039] It should be noted that the first synchronous transmission belt 30, the second synchronous transmission belt 31, the third synchronous transmission belt 33 and the fourth synchronous transmission belt 44 in the present scheme mainly focus on maintaining the transmission ratio. The equidistantly distributed transverse teeth on the inner surface thereof transmit motion by meshing with the corresponding tooth grooves on the pulleys at the corresponding input and output ends, thereby ensuring a strict transmission ratio. Of course, it can also be achieved through sprockets and chains. In actual situations, there may be errors in the transmission ratios at both ends of the synchronous transmission belts during use, but this error is within the adjustable range and can be adjusted through regular inspection and maintenance, and does not affect the cutting effect of the present scheme.

[0040] like Figure 7 and Figure 8As shown, the transmission member provided in this embodiment includes a linkage wheel 28 arranged on the linkage roller 25, and there are two linkage wheels 28 on the same first roller 5. A first synchronous transmission belt 30 is installed between one linkage wheel 28 and the driving wheel 27, and a second synchronous transmission belt 31 is installed between the other linkage wheel 28 and the driven wheel 29. It should be noted that the specifications of the two linkage wheels 28 are the same, so that the linear speed transmission effect is more stable.

[0041] In this solution, two linkage wheels 28 are provided to separate the driving wheel 27 from the driven wheel 29 , thereby facilitating the change of the angle between the first support arm 23 and the second support arm 22 .

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig. 9 As shown, in order to adjust the distance between the two first rollers 5 relative to each other so as to separate the first rollers 5 from the steel coil body 9, first guide grooves 3 are provided on both sides of the gantry 2, and first bidirectional screw rods 6 are rotatably installed inside the two first guide grooves 3, and first sliders 4 are symmetrically slidably installed inside the first guide grooves 3, the first slider 4 is rotatably connected to one end of the driven roller 24, and the first slider 4 is threadedly connected to the first bidirectional screw rod 6, a transmission box 7 is provided on the top of the gantry 2, and a first drive assembly 8 is provided in the transmission box 7, the first drive assembly 8 includes a servo motor 81 fixed to one end of the transmission box 7, a transmission shaft 82 is installed at the output end of the servo motor 81, and first bevel gears 83 are symmetrically installed at both ends of the transmission shaft 82, the upper end of the first bidirectional screw rod 6 extends to the inside of the transmission box 7 and is fixedly sleeved with a second bevel gear 84, and the second bevel gear 84 is meshed with the first bevel gear 83.

[0043] In this solution, the servo motor 81 is started to rotate the transmission shaft 82, thereby driving the first bevel gear 83 to rotate. The first bidirectional screw rod 6 is rotated through the engagement between the first bevel gear 83 and the second bevel gear 84. The threaded connection between the first bidirectional screw rod 6 and the first slider 4 allows the two first sliders 4 on the same side to move toward each other inside the first guide groove 3, thereby realizing the adjustment of the distance between the two relative first rollers 5.

[0044] It should be noted that, during this process, the first support arm 23 pushes the third slider 16 to slide on the inner side of the side plate 10, so that the angle between the second support arm 22 and the first support arm 23 changes to compensate for the change in the distance from the active roller 21 to the driven roller 24. Through the setting of the spring 26, the third slider 16 slides in the direction away from the gantry 2 to avoid the second support arm 22 and the first support arm 23 both facing the direction of the gantry 2, resulting in insufficient length of the motion trajectory.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown, in order to facilitate the adjustment of the distance between the two friction cylinders 11 so that the two friction cylinders 11 can clamp the steel coil bodies 9 of different thicknesses, the present solution has a second guide groove 12 on the side plate 10, and the second sliders 13 rotatably connected to the active roller 21 are symmetrically slidably installed at both ends of the second guide groove 12, wherein the second slider 13 located at the bottom is fixedly connected to the connecting plate 37, so that the second slider 13 can drive the connecting plate 37 to rise and fall synchronously when it is lifted and lowered, thereby ensuring that the lower surface of the steel coil body 9 can accurately abut against the upper surface of the discharge conveyor belt 38, and the second bidirectional screw 14 threadedly connected to the second slider 13 is rotatably installed in the second guide groove 12. The threads at both ends of the second bidirectional screw 14 have opposite rotation directions.

[0046] In the scheme, through the threaded connection between the second bidirectional screw 14 and the second slider 13, the second slider 13 moves toward each other inside the second guide groove 12, thereby adjusting the distance between the two friction cylinders 11, so that the friction cylinder 11 and the steel coil body 9 are tightly abutted, so that the two friction cylinders 11 can clamp the steel coil bodies 9 of different thicknesses. It should be noted that during this process, the second support arm 22 pushes the third slider 16 to slide on the inside of the side plate 10, so that the angle between the second support arm 22 and the first support arm 23 changes, so as to compensate for the change in the distance from the active roller 21 to the driven roller 24.

[0047] In addition, to facilitate the movement of the equipment, a base 1 is provided at the bottom of the gantry 2 and the side plate 10, and universal wheels are installed at the four corners of the base 1 to facilitate the movement of the equipment and improve the practicability of the equipment. To facilitate the driving of the second bidirectional screw 14, a transmission chamber 32 is opened inside the base 1, and a second drive assembly 15 is installed in the transmission chamber 32. The second drive assembly 15 is used to drive the two second bidirectional screws 14 to rotate synchronously. It should be noted that the second drive assembly 15 has the same structure as the first drive assembly 8, wherein the second drive assembly 15 includes a second servo motor fixed at one end of the transmission chamber 32, a second transmission shaft is installed at the output end of the second servo motor, and a third bevel gear is symmetrically installed on the second transmission shaft. The lower end of the second bidirectional screw 14 extends into the transmission chamber 32 and is fixedly sleeved with a fourth bevel gear, and the third bevel gear is meshed with the fourth bevel gear.

[0048] like Figure 3 and Figure 4As shown in the figure, for the convenience of height adjustment of the horizontal guide rod 17, the top orthographic projection of the side plate 10 provided in this embodiment is a "U" - shaped structure to facilitate the installation of the horizontal guide rod 17. Vertical guide chutes 18 are provided on both sides of the side plate 10. Fourth sliders 19 are installed at both ends of the horizontal guide rod 17. The fourth sliders 19 are slidably connected to the vertical guide chutes 18, and the fourth sliders 19 slide inside the vertical guide chutes 18 to drive the horizontal guide rod 17 to translate in the vertical direction.

[0049] During use (operation), the second driving assembly 15 is started to make the two second bidirectional lead screws 14 rotate. Through the threaded connection between the second bidirectional lead screws 14 and the second sliders 13, the second sliders 13 move towards each other inside the second guide grooves 12, thereby adjusting the distance between the two friction pressing cylinders 11, making the friction pressing cylinders 11 tightly abut against the steel coil body 9. During this process, the second support arm 22 pushes the third slider 16 to slide inside the side plate 10, causing the angle between the second support arm 22 and the first support arm 23 to change to compensate for the distance change between the driving roller 21 and the driven roller 24.

[0050] The rotation speed of the friction pressing cylinder 11 is detected by the speed sensor 35. Since the output speed of the output roller 36 is known, the rotation speed of the friction pressing cylinder 11 is compared with the output speed of the output roller 36. When the rotation speed of the output roller 36 is greater than the rotation speed of the friction pressing cylinder 11, it indicates that slipping occurs between the friction pressing cylinder 11 and the steel coil body 9. At this time, the distance between the two opposite friction pressing cylinders 11 is continuously adjusted to make the friction pressing cylinders 11 approach each other, thereby squeezing the steel coil body 9 to increase the friction force between the friction pressing cylinder 11 and the steel coil body 9 until the rotation speeds of the friction pressing cylinder 11 and the output roller 36 are the same, so as to ensure that the steel coil body 9 can stably drive the friction pressing cylinder 11 to rotate, providing a stable speed basis for the subsequent cutting of the steel coil body 9.

[0051] After the rotation speeds of the friction pressing cylinder 11 and the output roller 36 are the same, due to the friction force between the steel coil body 9 and the friction pressing cylinder 11, the friction pressing cylinder 11 rotates with the steel coil body 9. Further, the driving roller 21 drives the driving wheel 27 to rotate. Through the first synchronous transmission belt 30, one of the linkage wheels 28 rotates, thereby making the linkage roller 25 drive the other linkage wheel 28 to rotate. Through the second synchronous transmission belt 31 between the linkage wheel 28 and the driven wheel 29, the driven wheel 29 drives the driven roller 24 to rotate, so that the first roller 5 and the hydraulic - driven cutting knife 20 rotate to ensure that the linear speed of the hydraulic - driven cutting knife 20 during rotation is consistent with the conveying speed of the steel coil body 9.

[0052] Start the servo motor 81 to rotate the transmission shaft 82 to drive the first bevel gear 83 to rotate. The first bevel gear 83 is meshed with the second bevel gear 84 to rotate the first bidirectional lead screw 6. The threaded connection between the first bidirectional lead screw 6 and the first slider 4 makes the two first sliders 4 on the same side move toward each other inside the first guide groove 3. During this process, the first support arm 23 pushes the third slider 16 to slide on the inner side of the side plate 10, so that the angle between the second support arm 22 and the first support arm 23 changes to compensate for the change in the distance from the active roller 21 to the driven roller 24. The third slider 16 slides in the direction away from the gantry 2 by the setting of the spring 26 to avoid the second support arm 22 and the first support arm 23 both facing the direction of the gantry 2, resulting in insufficient length of the motion trajectory.

[0053] Since the linear speed of the hydraulically driven cutting knife 20 during rotation is always consistent with the conveying speed of the steel coil body 9, when adjusting the cutting length of the steel coil body 9, the rotation speed of the servo motor 81 can be controlled to change the time it takes for the first roller 5 to separate from the steel coil body 9, and the cutting length of the steel coil body 9 can be controlled according to distance = speed x time.

[0054] After the cutting is completed, the active roller 21 drives the discharging shaft 42 to rotate through the fourth synchronous transmission belt 44, and further rotates the discharging conveyor belt 38, so as to output the cut steel coil body 9.

[0055] Embodiment 2 The embodiment of the present invention provides an adjustable cutting device for galvanized steel coils, which is different from the first embodiment in that: like Fig.11 and Fig.12 As shown, the transmission member includes a third synchronous transmission belt 33, which is arranged between the driving wheel 27 and the driven wheel 29. A limiting roller 34 is rotatably installed at the connection between the inner side of the first support arm 23 and the second support arm 22. The limiting roller 34 is symmetrically arranged on both sides of the third synchronous transmission belt 33 to limit the limiting roller 34 when the angle of the second support arm 22 and the first support arm 23 changes.

[0056] In the embodiment, when the angle between the inner side of the first support arm 23 and the second support arm 22 changes, the third synchronous transmission belt 33 will turn at the position of the limiting roller 34, thereby avoiding loosening of the third synchronous transmission belt 33 and improving the stability of the third synchronous transmission belt 33 during transmission. When in use, the third synchronous transmission belt 33 can be directly driven to rotate through the driving wheel 27, thereby causing the driven wheel 29 to rotate.

[0057] 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", "comprises" or any other variations 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.

[0058] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable cutting device for galvanized steel coils, comprising a gantry (2), characterized in that: Also includes: first rollers (5), the first rollers (5) being symmetrically mounted on the inner side of the gantry (2), the two first rollers (5) rotating along the output direction of the steel coil body (9), and the two first rollers (5) sliding vertically relative to each other along the gantry (2), the first rollers (5) being mounted with mutually matching hydraulically driven cutting knives (20) for cutting the steel coil body (9); A friction pressing cylinder (11), wherein the friction pressing cylinder (11) is symmetrically mounted on one side of the gantry (2), and the friction pressing cylinder (11) is arranged upstream of the first roller (5), and the outer sides of the two friction pressing cylinders (11) are against the steel coil body (9), so that the conveying speed of the steel coil body (9) is the same as the linear speed of the edge of the friction pressing cylinder (11); A transmission assembly is provided between the first roller (5) and the friction pressing cylinder (11) and is used to transmit the linear velocity at the edge of the friction pressing cylinder (11) to the first roller (5), so that the linear velocity of the hydraulically driven cutting knife (20) on the first roller (5) is the same as the velocity of the steel coil body (9).

2. The adjustable cutting device for galvanized steel coil according to claim 1, characterized in that: Also includes: Side plates (10), the side plates (10) being symmetrically arranged at two ends of the friction pressure cylinder (11), and a third sliding block (16) being slidably mounted on the side plates (10); A horizontal guide rod (17), wherein the horizontal guide rod (17) is mounted on the inner side of the side plate (10), and both ends of the horizontal guide rod (17) are slidably connected to the side plate (10) in a vertical direction; wherein The third sliding block (16) is provided with a sliding hole, and the sliding hole is slidably connected to the horizontal guide rod (17).

3. The adjustable cutting device for galvanized steel coil according to claim 2, characterized in that: A linkage roller (25) is rotatably mounted on the third slider (16), a first support arm (23) is rotatably connected to the linkage roller (25), and the other end of the first support arm (23) is rotatably connected to the first roller (5); A second support arm (22) is rotatably mounted on the linkage roller (25), and one end of the second support arm (22) is rotatably connected to the friction pressure cylinder (11).

4. The adjustable cutting device for galvanized steel coil according to claim 3, characterized in that: The transmission assembly comprises an active roller (21) fixed to both ends of the friction pressure cylinder (11) and rotatably connected to the second support arm (22), and a driven roller (24) fixed to both ends of the first roller (5) and rotatably connected to the first support arm (23); A spring (26) is installed on the outside of the horizontal guide rod (17) between the third slider (16) and one end of the side plate (10), and the elastic force of the spring (26) is used to drive the third slider (16) to move in a direction away from the gantry (2); The active roller (21) is located inside the first support arm (23) and is fixedly sleeved with an active wheel (27). The driven roller (24) is located inside the second support arm (22) and is fixedly sleeved with a driven wheel (29). A transmission member is provided between the driven roller (24) and the driven wheel (29).

5. The adjustable cutting device for galvanized steel coil according to claim 4, characterized in that: An output roller (36) is provided upstream of the friction pressure cylinder (11), and the output roller (36) is used to drive the steel coil body (9) to unwind. A speed sensor (35) is installed at one end of one of the friction pressure cylinders (11), and the speed sensor (35) detects the rotation speed of the friction pressure cylinder (11).

6. The adjustable cutting device for galvanized steel coil according to claim 5, characterized in that: A connecting plate (37) is installed on both sides of the side plate (10), one end of the connecting plate (37) extends to the other side of the gantry (2), a discharging shaft (42) is rotatably installed between the two connecting plates (37), there are two discharging shafts (42), and a second roller (45) is installed on each of the two discharging shafts (42), a discharging conveyor belt (38) is provided between the two second rollers (45), and the upper surface of the discharging conveyor belt (38) is against the lower surface of the cut steel coil body (9) so as to be used for discharging the cut steel coil body (9); A pulley (43) is fixedly sleeved on one of the discharging rotating shafts (42) and the driving roller (21), and a fourth synchronous transmission belt (44) is installed between the two pulleys (43).

7. The adjustable cutting device for galvanized steel coil according to claim 6, characterized in that: The transmission member comprises a linkage wheel (28) arranged on a linkage roller (25), wherein two linkage wheels (28) are provided on the same first roller (5), wherein a first synchronous transmission belt (30) is installed between one linkage wheel (28) and a driving wheel (27), and a second synchronous transmission belt (31) is installed between the other linkage wheel (28) and a driven wheel (29).

8. The adjustable cutting device for galvanized steel coil according to claim 6, characterized in that: The transmission member comprises a third synchronous transmission belt (33), and the third synchronous transmission belt (33) is arranged between the driving wheel (27) and the driven wheel (29); A limiting roller (34) is rotatably mounted at the connection between the inner side of the first supporting arm (23) and the second supporting arm (22); the limiting roller (34) is symmetrically arranged on both sides of the third synchronous transmission belt (33) to limit the limiting roller (34) when the angle of the second supporting arm (22) and the first supporting arm (23) is changed.

9. An adjustable cutting device for galvanized steel coil according to claim 7 or 8, characterized in that: Both sides of the gantry (2) are provided with first guide grooves (3), first bidirectional screw rods (6) are rotatably mounted inside the two first guide grooves (3), and first sliders (4) are symmetrically slidably mounted inside the first guide grooves (3), the first sliders (4) are rotatably connected to one end of the driven roller (24), and the first sliders (4) are threadedly connected to the first bidirectional screw rods (6); A transmission box (7) is provided on the top of the gantry (2), and a first driving assembly (8) is provided inside the transmission box (7) for driving the first bidirectional screw rod (6) to rotate; The first drive assembly (8) comprises a servo motor (81) fixed to one end of a transmission box (7); a transmission shaft (82) is mounted on the output end of the servo motor (81); a first bevel gear (83) is symmetrically mounted on the transmission shaft (82); an upper end of the first bidirectional lead screw (6) extends into the interior of the transmission box (7) and is fixedly sleeved with a second bevel gear (84); the second bevel gear (84) is meshed with the first bevel gear (83).

10. The adjustable cutting device for galvanized steel coil according to claim 9, characterized in that: The side plate (10) is provided with a second guide groove (12), a second slider (13) rotatably connected to the active roller (21) is symmetrically slidably mounted inside the second guide groove (12), and a second bidirectional screw rod (14) threadedly connected to the second slider (13) is rotatably mounted inside the second guide groove (12); A base (1) is provided at the bottom of the gantry (2) and the side plate (10). Universal wheels are installed at the four corners of the base (1), and a transmission cavity (32) is formed inside the base (1). A second driving assembly (15) is installed in the transmission cavity (32), and the second driving assembly (15) is used to drive two second bidirectional lead screws (14) to rotate synchronously and in opposite directions; The top orthographic projection of the side plate (10) is a "U"-shaped structure, and vertical guiding chutes (18) are provided on both sides of the side plate (10). Fourth sliders (19) are installed at both ends of the horizontal guiding rod (17), and the fourth sliders (19) are slidably connected to the vertical guiding chutes (18).

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