Straightening device for hot-rolled coil plate machining

Abstract

The utility model relates to the technical field of hot-rolled coil plate machining, in particular to a straightening device for hot-rolled coil plate machining, which comprises a bottom plate, an unwinding component, a limiting component and a straightening component. The straightening assembly comprises a plurality of first straightening rollers arranged on the fixing frame at intervals, the first straightening rollers rotate under the action of the transmission assembly, a plurality of second straightening rollers are rotatably arranged on the portion, above the first straightening rollers, of the lifting frame, and two sliding blocks are arranged on the two sides of the lifting frame correspondingly and slidably connected with sliding grooves in the two sides of the fixing frame correspondingly. The rotating shaft is rotatably arranged above the second straightening roller under the driving of the rotating assembly, when the rotating shaft rotates, two first gears on the rotating shaft are driven to rotate, the two first gears are meshed with two first racks which are vertically arranged, and the lower ends of the first racks are connected with the tops of the corresponding sliding blocks. The straightening device has the advantages that the distance between the upper straightening roll and the lower straightening roll is convenient to adjust, a hot-rolled coil is prevented from deviating, and the straightening effect on the hot-rolled coil is good.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-rolled coil processing, in particular to a straightening device for hot-rolled coil processing. Background Art

[0002] The hot-rolled coil will bend when it is coiled. Therefore, in order to ensure the convenience of subsequent processing and to prevent the unevenness of the coil and internal stress from affecting the precision of subsequent products, the hot-rolled coil needs to be straightened between the upper and lower rows of straightening rollers during unwinding.

[0003] However, when the device is in use, some of them adjust the distance between the two rows of straightening rollers by setting springs on both sides of the upper straightening roller, and the force instability of the springs is relatively large. The stiffness and force transmission effect of the springs may be difficult to accurately predict and control, and may not be able to achieve accurate straightening effects; on the other hand, if the edge of the hot-rolled coil cannot be limited when unwinding, the hot-rolled coil may be offset during straightening. Utility Model Content

[0004] In view of this, the utility model provides a straightening device for hot-rolled coil processing, which has the advantages of facilitating adjustment of the spacing between upper and lower straightening rollers, preventing the hot-rolled coil from deviating, and having a good straightening effect on the hot-rolled coil.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A straightening device for hot rolled coil processing, comprising:

[0007] It includes a bottom plate, and an unwinding assembly, a limiting assembly, and a straightening assembly arranged thereon in sequence according to the traveling direction of the hot-rolled coil;

[0008] A stop assembly for keeping the hot rolled coil moving in a straight line; and

[0009] The straightening assembly is used to straighten the hot rolled coil, specifically comprising:

[0010] The fixed frame is arranged on the bottom plate, and a plurality of first straightening rollers are arranged at intervals along the traveling direction of the hot-rolled coil, and rotate synchronously under the action of the transmission assembly.

[0011] A lifting frame is rotatably arranged above the plurality of first straightening rollers, and a plurality of second straightening rollers rotatably arranged on the lifting frame correspond one to one with the plurality of first straightening rollers.

[0012] Two sliders are respectively arranged on both sides of the lifting frame, and each slider is slidably connected and adapted to a slide groove vertically arranged on one side of the fixing frame.

[0013] A rotating shaft is rotatably arranged on the top plate of the fixed frame above the second straightening roller under the driving of the rotating assembly, and two first gears are arranged on the rotating shaft at intervals.

[0014] Two first racks are vertically arranged and meshed with the two first gears respectively. The lower ends of the first racks extend into the slide grooves and are connected with the corresponding tops of the slide blocks.

[0015] A further improvement of the utility model is that the rotating assembly comprises:

[0016] A second gear, disposed in the middle of the rotating shaft; and

[0017] The second rack is horizontally slidably disposed on the upper surface of the top plate under the drive of the first hydraulic cylinder and is meshed with the second gear.

[0018] A further improvement of the utility model is that the number of teeth of the first gear is greater than the number of teeth of the second gear.

[0019] A further improvement of the utility model is that the limit assembly comprises:

[0020] A screw rod is parallel to the first straightening roller and is rotatably arranged above the bottom plate under the drive of a first motor;

[0021] Two moving blocks are respectively threadedly connected to two threaded sections on the screw rod with opposite rotation directions, and the two moving blocks are slidably connected and adapted to an optical axis parallel to the screw rod; and

[0022] Two limiting rollers are respectively arranged vertically and rotatably on the lower surfaces of the two moving blocks, and the outer circumferential surfaces of the limiting rollers are provided with annular grooves.

[0023] A further improvement of the utility model is that the unwinding assembly comprises:

[0024] Two support plates are respectively arranged on the bottom plate on both sides of the unwinding roller;

[0025] A plurality of support rollers are respectively arranged below and on the left and right sides of the unwinding roller, and both ends of each of the support rollers are respectively connected to the two support plate rotating shafts; and

[0026] The material pressing component is arranged on a mounting plate at one side of the support plate away from the limiting assembly, and is used for pressing the unwinding roller in the unwinding process.

[0027] A further improvement of the utility model is that the pressing member comprises:

[0028] A mounting shaft, parallel to the support roller and rotatably disposed on the mounting plate;

[0029] Two connecting rods, the first ends of which are respectively connected to the two mounting shafts, and the second ends of the two connecting rods are respectively connected to the two end shafts of the nip roller, and the middle parts of the two connecting rods are connected by a connecting shaft; and

[0030] The second hydraulic cylinder has a cylinder body bottom hinged to the mounting plate, and a piston rod end connected to the connecting shaft rotating shaft.

[0031] A further improvement of the utility model is that the outer circumferential surface of the nip roller is coated with a rubber coating.

[0032] A further improvement of the utility model is that a dovetail-shaped slide plate is provided on the first rack and is slidably connected with and penetrates the top plate.

[0033] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0034] The utility model provides a straightening device for hot-rolled coil processing. After unwinding, the hot-rolled coil passes through a limiting assembly, which can limit the two sides of the hot-rolled coil so that it can keep moving in a straight line without offset, which is convenient for subsequent straightening operations. The hot-rolled coil is straightened by rolling with multiple first straightening rollers and multiple second straightening rollers. The spacing between the multiple first straightening rollers and the multiple second straightening rollers is easy to adjust, which can adapt to the straightening of hot-rolled coils of different sizes, and the pressure is more stable and the straightening effect is better.

[0035] The above technical progress is mainly achieved by the following detailed technical improvements:

[0036] After the hot rolled coil is unrolled, in order to keep the hot rolled coil moving horizontally without deviation, the two sides of the hot rolled coil are limited. The first motor drives the screw to rotate, so that the two moving blocks are close or far away, and the distance between the two limiting rollers is adjusted, and the two sides of the hot rolled coil are placed in the annular grooves on the two limiting rollers to prevent it from running off, so as to achieve a better straightening effect on the hot rolled coil in the future.

[0037] In the straightening assembly, when the first hydraulic cylinder drives the second rack to move horizontally, it meshes with the second gear, driving the rotating shaft and the two first gears thereon to rotate, and the two first gears respectively mesh with the two first racks, so that the two first racks respectively drive the two sliders to rise and fall synchronously, and adjust the spacing between the first straightening roller and the second straightening roller. The height of the slider is adjusted according to different coil thicknesses. It has stronger adaptability and can provide more uniform and stable pressure on the hot-rolled coil, resulting in better straightening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 This is a schematic diagram of the overall structure of the straightening device of the utility model;

[0040] Figure 2 It is a structural schematic diagram of the unwinding assembly of the utility model;

[0041] Figure 3 It is a structural schematic diagram of the limit assembly of the utility model;

[0042] Figure 4 This is a schematic diagram of the structure of the straightening assembly of the utility model;

[0043] Description of reference numerals:

[0044] 10-bottom plate, 11-fixed frame, 111-slide groove, 112-top plate, 12-mounting plate, 21-support plate, 22-support roller, 23-mounting shaft, 24-connecting rod, 25-connecting shaft, 26-second hydraulic cylinder, 27-pressing roller, 30-limiting assembly, 31-screw, 32-first motor, 33-moving block, 34-optical axis, 35-limiting roller, 351-annular groove, 40-straightening assembly, 41-first straightening roller, 421-second motor, 422-sprocket, 423-chain, 43-lifting frame, 44-second straightening roller, 45-slider, 46-rotating shaft, 47-rotating assembly, 471-second rack, 472-second gear, 473-first hydraulic cylinder, 48-first gear, 49-first rack. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, in the following description, specific details such as specific system structures and technologies are proposed for the purpose of explanation rather than limitation, so as to thoroughly understand the embodiments of the utility model. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from hindering the description of the utility model.

[0046] The utility model provides a straightening device for hot-rolled coil processing. Figure 1 -Attached Figure 4It can be seen that a straightening device for hot-rolled coil processing includes a base plate 10 and an unwinding assembly, a limiting assembly 30, and a straightening assembly 40 arranged in sequence according to the traveling direction of the hot-rolled coil; the unwinding assembly is used to unwind the hot-rolled coil; the limiting assembly 30 is used to keep the hot-rolled coil moving in a straight line; the straightening assembly 40 is used to straighten the hot-rolled coil, and specifically includes a fixed frame 11 arranged on the base plate 10, a plurality of first straightening rollers 41 arranged at intervals along the traveling direction of the hot-rolled coil, which rotate synchronously under the action of the transmission assembly, and a lifting frame 43 is arranged above the plurality of first straightening rollers 41 and can be lifted and lowered, and the lifting frame 43 can be lifted and lowered. A plurality of second straightening rollers 44 are rotatably arranged, corresponding one to one with the plurality of first straightening rollers 41, two sliders 45 are respectively arranged on both sides of the lifting frame 43, each slider 45 is slidably connected and adapted to a slide groove 111 vertically arranged on one side of the fixed frame 11, and a rotating shaft 46 is rotatably arranged on a top plate 112 of the fixed frame 11 above the second straightening roller 44 under the drive of a rotating assembly 47, two first gears 48 are arranged at intervals on the rotating shaft 46, two first racks 49 are vertically arranged and respectively meshed with the two first gears 48, and the lower end of the first rack 49 extends into the slide groove 111 and is connected to the top of the corresponding slider 45.

[0047] After the hot rolled coil is unwound, in order to keep the hot rolled coil moving horizontally without deviation, the hot rolled coil is limited during the moving process by the limiting assembly 30. Then the hot rolled coil enters the straightening assembly 40, and the lifting frame 43 and the plurality of second straightening rollers 44 thereon are raised and lowered according to the thickness of the hot rolled coil, and the pressure on the hot rolled coil can be controlled to be consistent, so as to achieve a better straightening effect.

[0048] When adjusting, the rotating shaft 46 is driven to rotate through the rotating component 47, so that the two first gears 48 on it rotate synchronously, and the first gear 48 is meshed with the first rack 49, so that the two first racks 49 drive the two sliders 45 to slide synchronously in the slide groove 111, and drive the lifting frame 43 to rise and fall, so as to adjust the distance between the first straightening roller 41 and the second straightening roller 44, and adjust the height of the slider 45 according to different coil thicknesses, so that it has stronger adaptability and can provide more uniform and stable pressure on the hot-rolled coil.

[0049] The transmission assembly includes a plurality of sprockets 422 , which are respectively arranged at the ends of a plurality of first straightening rollers 41 penetrating the fixed frame 11 , and the plurality of sprockets 422 are connected by a chain 423 , wherein one of the first straightening rollers 41 is connected to the output end of the second motor 421 .

[0050] As an embodiment, according to the attached Figure 4It can be seen that the rotating assembly 47 includes: a second gear 472 is arranged in the middle of the rotating shaft 46; the second rack 471 is horizontally slidably arranged on the upper surface of the top plate 112 under the drive of the first hydraulic cylinder 473, and is meshed with the second gear 472.

[0051] When the first hydraulic cylinder 473 drives the second rack 471 to move horizontally, the second rack 471 meshes with the second gear 472, and can drive the rotating shaft 46 to rotate. The structure is simple and easy to use.

[0052] In this embodiment, according to the specification Figure 4 It can be seen that the number of teeth of the first gear 48 is greater than the number of teeth of the second gear 472. When the second gear 472 drives the rotating shaft 46 to rotate one circle, the lifting distance of the first rack 49 is less than the moving distance of the second rack 471, so that the lifting speed of the lifting frame 43 driven by the first rack 49 can be slowed down, the adjustment is more precise, and the lifting is stable, which is convenient for fine-tuning the distance between the multiple first straightening rollers 41 and the second straightening rollers 44 according to the thickness of the hot-rolled coil.

[0053] As an embodiment, according to the attached Figure 3 It can be seen that the limiting assembly 30 includes: a screw rod 31 which is parallel to the first straightening roller 41 and is rotatably arranged above the base plate 10 under the drive of the first motor 32; two moving blocks 33 are respectively threadedly connected to two threaded sections with opposite rotation directions on the screw rod 31, and the two moving blocks 33 are slidably connected and adapted to the optical axis 34 which is parallel to the screw rod 31; two limiting rollers 35 are respectively vertically and rotatably arranged on the lower surfaces of the two moving blocks 33, and the outer circumferential surface of the limiting roller 35 is provided with an annular groove 351.

[0054] The two sides of the hot-rolled coil are limited. The first motor 32 drives the screw 31 to rotate, and the two moving blocks 33 are threadedly connected to the screw 31. Under the guidance of the optical axis 34, the two moving blocks 33 are synchronously moved closer or farther away, driving the two limiting rollers 35 to move horizontally, adjusting the spacing, and limiting the two sides of the hot-rolled coil in the annular grooves 351 on the two limiting rollers 35 to prevent it from running off and keep it moving horizontally, so as to achieve a better straightening effect on the hot-rolled coil in the future.

[0055] As an embodiment, according to the attached Figure 2 It can be seen that the unwinding assembly includes: two support plates 21 are respectively arranged on the bottom plate 10 on both sides of the unwinding roller; a plurality of support rollers 22 are respectively arranged below and on the left and right sides of the unwinding roller, and the two ends of each support roller 22 are respectively connected to the rotating shafts of the two support plates 21; a pressing member is arranged on the mounting plate 12 on the side of the support plate 21 away from the limiting assembly 30, and is used to press the unwinding roller during unwinding.

[0056] The unwinding roller is placed above a plurality of supporting rollers 22, and the outer circumferential surface of the supporting roller 22 is in rolling connection with the hot rolled coil on the unwinding roller, which plays a role of supporting and assisting the unwinding when the unwinding is being carried out. Preferably, two supporting rollers 22 are arranged below the unwinding roller, one on each side. A material pressing member is also provided to prevent the hot rolled coil from being loosened when unwinding.

[0057] In this embodiment, according to the specification Figure 2 It can be seen that the pressing component includes: a mounting shaft 23 parallel to the supporting roller 22, and rotatably arranged on the mounting plate 12; the first ends of the two connecting rods 24 are respectively connected to the rotating shafts of the two mounting shafts 23, and the second ends of the two connecting rods 24 are respectively connected to the rotating shafts of the two ends of the pressing roller 27, and the middle parts of the two connecting rods 24 are connected by a connecting shaft 25; the bottom of the cylinder body of the second hydraulic cylinder 26 is hinged to the mounting plate 12, and the end of its piston rod is connected to the rotating shaft of the connecting shaft 25.

[0058] In the pressing member, the piston rod of the second hydraulic cylinder 26 extends, and the two connecting rods 24 are driven to swing with the hinge point of the first end and the mounting shaft 23 as the center through the connecting shaft 25. During the unwinding process, the amount of hot-rolled coil on the unwinding roller gradually decreases, and the piston rod of the second hydraulic cylinder 26 gradually extends, so that the pressing roller 27 always fits the surface of the hot-rolled coil on the unwinding roller, thereby avoiding the unwinding of the hot-rolled coil and causing adverse effects on subsequent processing.

[0059] In this embodiment, the outer circumferential surface of the nip roller 27 is coated with a rubber coating to increase the friction between the nip roller 27 and the hot-rolled coil.

[0060] In this embodiment, according to the specification Figure 4 It can be seen that a dovetail-shaped slide plate is provided on the first rack 49 , which is slidably connected to and penetrates the top plate 112 , and plays a guiding role in the lifting and lowering of the first rack 49 .

[0061] It should be noted that, in this patent application, 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 more restrictions, the sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A straightening device for hot rolled coil processing, characterized in that: It includes a bottom plate, and an unwinding assembly, a limiting assembly, and a straightening assembly arranged thereon in sequence according to the traveling direction of the hot-rolled coil; A limiter assembly is used to keep the hot rolled coil moving in a straight line; and The straightening assembly is used to straighten the hot rolled coil, specifically comprising: The fixed frame is arranged on the bottom plate, and a plurality of first straightening rollers are arranged at intervals along the traveling direction of the hot-rolled coil, and rotate synchronously under the action of the transmission assembly. A lifting frame is rotatably arranged above the plurality of first straightening rollers, and a plurality of second straightening rollers rotatably arranged on the lifting frame correspond one to one with the plurality of first straightening rollers. Two sliders are respectively arranged on both sides of the lifting frame, and each slider is slidably connected and adapted to a slide groove vertically arranged on one side of the fixing frame. A rotating shaft is rotatably arranged on the top plate of the fixed frame above the second straightening roller under the driving of the rotating assembly, and two first gears are arranged on the rotating shaft at intervals. Two first racks are vertically arranged and meshed with the two first gears respectively. The lower ends of the first racks extend into the slide grooves and are connected with the corresponding tops of the slide blocks.

2. A straightening device for hot rolled coil processing according to claim 1, characterized in that: The rotating assembly comprises: A second gear, disposed in the middle of the rotating shaft; and The second rack is horizontally slidably disposed on the upper surface of the top plate under the drive of the first hydraulic cylinder and is meshed with the second gear.

3. A straightening device for hot rolled coil processing according to claim 2, characterized in that: The number of teeth of the first gear is greater than the number of teeth of the second gear.

4. A straightening device for hot rolled coil processing according to claim 1, characterized in that: The limiting component comprises: A screw rod is parallel to the first straightening roller and is rotatably arranged above the bottom plate under the drive of a first motor; Two moving blocks are respectively threadedly connected to two threaded sections on the screw rod with opposite rotation directions, and the two moving blocks are slidably connected and adapted to an optical axis parallel to the screw rod; and Two limiting rollers are respectively arranged vertically and rotatably on the lower surfaces of the two moving blocks, and the outer circumferential surfaces of the limiting rollers are provided with annular grooves.

5. A straightening device for hot rolled coil processing according to claim 4, characterized in that: The unwinding assembly comprises: Two support plates are respectively arranged on the bottom plate on both sides of the unwinding roller; A plurality of support rollers are respectively arranged below and on the left and right sides of the unwinding roller, and both ends of each of the support rollers are respectively connected to the two support plate rotating shafts; and The material pressing component is arranged on a mounting plate at one side of the support plate away from the limiting assembly, and is used for pressing the unwinding roller in the unwinding process.

6. A straightening device for hot rolled coil processing according to claim 5, characterized in that: The pressing member comprises: A mounting shaft, parallel to the support roller and rotatably disposed on the mounting plate; Two connecting rods, the first ends of which are respectively connected to the two mounting shafts, and the second ends of the two connecting rods are respectively connected to the two end shafts of the nip roller, and the middle parts of the two connecting rods are connected by a connecting shaft; and The second hydraulic cylinder has a cylinder body bottom hinged to the mounting plate, and a piston rod end connected to the connecting shaft rotating shaft.

7. A straightening device for hot rolled coil processing according to claim 6, characterized in that: The outer circumferential surface of the nip roller is coated with a rubber coating.

8. A straightening device for hot rolled coil processing according to any one of claims 1 to 7, characterized in that: The first rack is provided with a dovetail-shaped slide plate, which is slidably connected with and penetrates the top plate.

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