Tensioning device for cold-rolled strip steel before annealing

Abstract

The utility model relates to the technical field of cold-rolled strip steel production, and provides a cold-rolled strip steel pre-annealing tensioning device which comprises a base, guide rollers are rotationally connected to the two sides of the top end of the base, a fixing frame is fixedly connected to one end of the top end of the base, and a threaded rod is rotationally connected to the inner bottom wall of a reserved groove. The surface of the threaded rod is in threaded connection with a threaded block, a tensioning roller is arranged at the top end of the self-tensioning assembly, the self-tensioning assembly, the threaded block and the threaded rod are arranged, the height of the tensioning roller is changed through threaded fit of the threaded block and the threaded rod, primary tensioning of the cold-rolled strip steel is achieved, and then elastic force of a second tensioning box is used for tensioning the cold-rolled strip steel. The tensioning roller can elastically move up and down within a certain range, the tensioning roller can descend when the cold-rolled strip steel is too tight, the tensioning roller ascends when the cold-rolled strip steel is too loose, automatic elastic tensioning adjustment is achieved, the good tensioning degree is guaranteed when the cold-rolled strip steel is conveyed, and the practicability of the tensioning roller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-rolled strip steel production, in particular to a tensioning device before annealing of a cold-rolled strip steel. Background Art

[0002] Cold-rolled strip steel refers to hot-rolled strip steel and steel plate as raw materials, which are rolled into strip steel and thin plates by cold rolling mill at room temperature. It has the advantages of good surface finish, good flatness, high dimensional accuracy and good mechanical properties. Therefore, it is widely used nowadays. During the annealing process, it needs to be tensioned to avoid deformation during annealing and ensure further processing after annealing, so corresponding tensioning devices are required.

[0003] After searching, the existing patent (Announcement No.: CN211079275U) discloses a galvanized strip pre-annealing tensioning device, including an adjustment component, a transmission component and a shock-absorbing component, both sides of the shock-absorbing component are fixedly installed with support components, both sides of the top of the shock-absorbing component are fixedly installed with support plates, the adjustment component is fixedly installed between the support plates, the bottom of the adjustment component is fixedly installed with an auxiliary component, one end of the auxiliary component is fixedly installed with a motor, the bottom of the auxiliary component is movably installed with a transmission component, one side of the transmission component is equidistantly installed with a driven roller, and the bottom of the shock-absorbing component is equidistantly installed with a walking wheel. The utility model is provided with a series of structures to make the parts made of elastic materials deform under the action of external force during the use of the device, and return to their original state after the external force is removed, and use the action and reaction force of the reset spring to reduce the shock of the device, thereby improving the stability of the device.

[0004] However, in the above scheme, it is inconvenient to self-adjust the tension. The tension is adjusted by adjusting the components, and it is fixed after adjustment. However, in the actual transportation process, the tension of the cold-rolled strip changes. Therefore, it is impossible to adapt the tension of the cold-rolled strip during transportation, resulting in the phenomenon that a small section of the cold-rolled strip is still too loose during transportation, which in turn affects the quality of subsequent annealing.

[0005] In view of this, the utility model proposes a tensioning device before annealing of cold-rolled strip steel. Utility Model Content

[0006] The utility model provides a tensioning device before annealing of cold-rolled strip steel, which solves the problem of inconvenience in self-adjusting tensioning in the related technology.

[0007] The technical solution of the utility model is as follows: a tensioning device before annealing of cold-rolled strip steel, comprising a base, guide rollers are rotatably connected to both sides of the top of the base, a fixing frame is fixedly connected to one end of the top of the base, a reserved groove is opened at the upper end inside the fixing frame, a threaded rod is rotatably connected to the inner bottom wall of the reserved groove, a rotating handle extending to the outside of the fixing frame is fixedly connected to the top of the threaded rod, a threaded block is threadedly connected to the surface of the threaded rod, a self-tensioning component is arranged at one end of the threaded block, a tensioning roller is arranged at the top of the self-tensioning component, and guide components are arranged at both ends of the guide roller and the surface of the tensioning roller.

[0008] The self-tensioning assembly includes a first tensioning box, the first tensioning box is arranged at one end of the tensioning roller, one end of the threaded block is fixedly connected to the second tensioning box, the inner bottom walls of the first tensioning box and the second tensioning box are fixedly connected to a return spring, the top of the return spring is fixedly connected to a sliding rod extending to the outside of the first tensioning box and the second tensioning box, the top of the sliding rod is fixedly connected to a connecting seat, one end of the connecting seat is rotatably connected to the two ends of the tensioning roller, during the conveying process of the cold-rolled strip, if the cold-rolled strip is too tight, the tensioning roller will be further driven to descend and compress the return spring, and when the cold-rolled strip is too loose, the elastic force of the return spring can be used to make the tensioning roller rise to tension the cold-rolled strip, thereby realizing automatic elastic tensioning adjustment of the tensioning roller within a certain range, ensuring good tensioning degree during the conveying of the cold-rolled strip, and improving its practicality.

[0009] Preferably, limiting grooves are provided on both sides of the inner walls of the first tensioning box and the second tensioning box, and the bottom ends of both sides of the sliding rod are fixedly connected with limiting blocks that slide in cooperation with the inside of the limiting grooves, so that the sliding rod can slide up and down more smoothly.

[0010] Preferably, a fixing plate is fixedly connected to one end of the top of the base away from the fixing frame, a sliding groove is provided at the upper end of one end of the fixing plate, and the first tensioning box is fixedly connected to a slider that slides with the inside of the sliding groove to improve the stability of the up and down sliding adjustment of the tensioning roller.

[0011] Preferably, the guide assembly includes an adjusting slot, the adjusting slot is opened at two ends of the guide roller and the tensioning roller surface, the two ends of the guide roller and the tensioning roller surface are slidably connected with guide plates, the inner wall of the guide plate is fixedly connected with an adjusting block, one side of the guide plate is fixedly connected with a fixing block, the top of the fixing block is threadedly connected with an adjusting screw that penetrates the fixing block, the bottom end of the adjusting screw is fixedly connected with a pressure plate through a bearing, and the bottom end of the pressure plate is fixedly connected with a rubber pad, pushing the guide plate until the distance between the two is slightly larger than the width of the cold-rolled strip, and then rotating the adjusting screw in the opposite direction, so that the pressure plate descends and drives the rubber pad to descend and tightly contact the guide roller or the tensioning roller surface, so as to realize the limited fixing of the guide plate after sliding, which is convenient for limiting the guiding of cold-rolled strips of different widths, avoiding their deviation on the guide roller or the tensioning roller surface and affecting subsequent annealing operations.

[0012] Preferably, a sliding groove is provided on one side of the guide disk, and a sliding block slidingly matched with the inside of the sliding groove is fixedly connected to one side of the clamping plate to prevent the clamping plate from rotating with the rotation of the adjusting screw, thereby making the up and down sliding of the clamping plate smoother.

[0013] Preferably, the rubber pad is arc-shaped, and an anti-skid pattern is provided at the bottom end of the rubber pad to increase the contact friction between the rubber pad and the surface of the guide roller or the tensioning roller, thereby improving the stability of the limit fixation after the guide plate slides.

[0014] Preferably, an elastic block is fixedly connected to the middle position of the bottom end of the rubber pad, and an elastic engaging structure is formed between the elastic block and the upper end inside the adjustment groove, so as to further improve the stability of the limit fixation after the guide plate slides.

[0015] Preferably, a sliding structure is formed between the adjusting block and the inside of the adjusting groove, and the cross-section of the adjusting groove and the adjusting block is convex, thereby improving the smoothness of the sliding of the guide disk on the surface of the guide roller or the tensioning roller.

[0016] The working principle and beneficial effects of the utility model are:

[0017] 1. The utility model provides a guide roller, a rotating handle, a self-tensioning assembly, a threaded block and a threaded rod. The rotating handle drives the threaded rod to rotate, so that the threaded block moves and drives the second tensioning box to move, and then drives the tensioning roller to move up and down to adjust the tension of the cold-rolled strip to maintain a certain tension. Then, the tensioning roller is pressed down a certain distance. In the process of conveying the cold-rolled strip, if the cold-rolled strip is too tight, the tensioning roller will be further driven to descend and compress the reset spring. When the cold-rolled strip is too loose, the elastic force of the reset spring can be used to make the tensioning roller rise to tension the cold-rolled strip. Then, the elastic force of the reset spring can be used to realize automatic elastic tension adjustment of the tensioning roller within a certain range, thereby ensuring a good tension during the conveying of the cold-rolled strip, avoiding the inconvenience of subsequent annealing caused by too loose or too tight, improving its practicality, and realizing the function of facilitating self-adjustment of tension.

[0018] 2. In the utility model, the guide assembly is provided to adjust the spacing between the guide disks according to the width of the cold-rolled strip. At this time, the adjusting screw is rotated to drive the clamping plate to rise to a suitable position, and then the guide disk is pushed to slide until the spacing between the two is slightly larger than the width of the cold-rolled strip. Then the adjusting screw is rotated in the opposite direction, so that the clamping plate descends and drives the rubber pad to descend and tightly contact the surface of the guide roller or the tensioning roller, and the elastic block will be stuck to the upper end of the inner part of the adjusting groove, so as to realize the limited fixation after the guide disk slides, which is convenient for limiting the guidance of cold-rolled strips of different widths, ensuring the accurate and smooth conveying operation of the cold-rolled strip, avoiding its deviation on the surface of the guide roller or the tensioning roller and affecting the subsequent annealing operation, improving its practicality, and realizing the role of facilitating limited guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the explosion structure at the guide plate of the utility model;

[0022] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0023] Figure 4 It is a schematic diagram of a partially exploded and enlarged structure of a guide component of the utility model;

[0024] Figure 5 It is a schematic diagram of an enlarged partial cross-section of the self-tensioning component of the utility model.

[0025] In the figure: 1. guide roller; 2. guide assembly; 201. guide plate; 202. adjusting screw; 203. fixing block; 204. clamping plate; 205. rubber pad; 206. elastic block; 207. adjusting groove; 208. adjusting block; 209. sliding groove; 210. sliding block; 3. turning handle; 4. fixing frame; 5. base; 6. fixing plate; 7. self-tensioning assembly; 701. first tensioning box; 702. sliding rod; 703. limiting groove; 704. second tensioning box; 705. reset spring; 706. limiting block; 707. connecting seat; 8. tensioning roller; 9. sliding groove; 10. sliding block; 11. threaded block; 12. threaded rod; 13. reserved groove. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Example 1

[0028] The preferred embodiment of the cold-rolled strip steel annealing pre-tensioning device provided by the utility model is as follows Figures 1 to 5 As shown: a tensioning device before annealing of cold-rolled strip steel, including a base 5, guide rollers 1 are rotatably connected to both sides of the top of the base 5, a fixing frame 4 is fixedly connected to one end of the top of the base 5, a reserved groove 13 is opened at the upper end inside the fixing frame 4, a threaded rod 12 is rotatably connected to the inner bottom wall of the reserved groove 13, a rotating handle 3 extending to the outside of the fixing frame 4 is fixedly connected to the top of the threaded rod 12, a threaded block 11 is threadedly connected to the surface of the threaded rod 12, a self-tensioning component 7 is arranged at one end of the threaded block 11, a tensioning roller 8 is arranged at the top of the self-tensioning component 7, and guide components 2 are arranged at both ends of the surface of the guide roller 1 and the tensioning roller 8.

[0029] The self-tensioning assembly 7 includes a first tensioning box 701, which is arranged at one end of the tensioning roller 8, and one end of the threaded block 11 is fixedly connected to the second tensioning box 704, and the inner bottom walls of the first tensioning box 701 and the second tensioning box 704 are fixedly connected to a return spring 705, and the top of the return spring 705 is fixedly connected to a sliding rod 702 extending to the outside of the first tensioning box 701 and the second tensioning box 704, and the top of the sliding rod 702 is fixedly connected to a connecting seat 707, and one end of the connecting seat 707 is rotatably connected to the two ends of the tensioning roller 8. During the transportation of the cold-rolled strip, if the cold-rolled strip is too tight, the tensioning roller 8 will be further driven to descend and compress the return spring 705. When the cold-rolled strip is too loose, the elastic force of the return spring 705 can be used to make the tensioning roller 8 rise to tension the cold-rolled strip, thereby realizing automatic elastic tensioning adjustment of the tensioning roller 8 within a certain range.

[0030] In this embodiment, limiting grooves 703 are provided on both sides of the inner walls of the first tensioning box 701 and the second tensioning box 704, and the bottom ends of both sides of the sliding rod 702 are fixedly connected with limiting blocks 706 that slide with the inside of the limiting grooves 703. The limiting blocks 706 slide inside the limiting grooves 703, so that the sliding rod 702 can slide up and down more smoothly.

[0031] In this embodiment, a fixing plate 6 is fixedly connected to one end of the top of the base 5 away from the fixing frame 4, a slide groove 9 is provided at the upper end of one end of the fixing plate 6, and a slider 10 slidably matched with the inside of the slide groove 9 is fixedly connected to the first tensioning box 701. The sliding of the slider 10 in the slide groove 9 improves the stability of the up and down sliding adjustment of the tensioning roller 8.

[0032] Example 2

[0033] On the basis of Example 1, a preferred embodiment of the cold-rolled strip annealing pre-tensioning device provided by the utility model is as follows: Figures 1 to 5 As shown: the guide assembly 2 includes an adjustment groove 207, which is provided at both ends of the surface of the guide roller 1 and the tensioning roller 8, and the guide discs 201 are slidably connected at both ends of the surface of the guide roller 1 and the tensioning roller 8, and the inner wall of the guide disc 201 is fixedly connected with an adjustment block 208, and one side of the guide disc 201 is fixedly connected with a fixed block 203, and the top of the fixed block 203 is threadedly connected with an adjusting screw 202 that penetrates the fixed block 203, and the bottom end of the adjusting screw 202 is fixedly connected with a clamping plate 204 through a bearing, and the bottom end of the clamping plate 204 is fixedly connected with a rubber pad 205, and the guide disc 201 is pushed until the distance between the two is slightly larger than the width of the cold-rolled strip, and then the adjusting screw 202 is rotated in the opposite direction, so that the clamping plate 204 descends and drives the rubber pad 205 to descend and closely contact the surface of the guide roller 1 or the tensioning roller 8, so as to realize the limited fixation of the guide disc 201 after sliding, so as to facilitate the limited guidance of cold-rolled strips of different widths.

[0034] In this embodiment, a sliding groove 209 is opened on one side of the guide disk 201, and a sliding block 210 that slides with the inside of the sliding groove 209 is fixedly connected to one side of the clamping plate 204. The sliding of the sliding block 210 in the sliding groove 209 can prevent the clamping plate 204 from rotating with the rotation of the adjusting screw 202, thereby making the up and down sliding of the clamping plate 204 smoother.

[0035] In this embodiment, the rubber pad 205 is arc-shaped, and an anti-skid pattern is provided at the bottom of the rubber pad 205. The arc-shaped rubber pad 205 with anti-skid patterns is used to increase the contact friction between the rubber pad 205 and the surface of the guide roller 1 or the tensioning roller 8, thereby improving the stability of the limit fixation of the guide plate 201 after sliding.

[0036] In this embodiment, an elastic block 206 is fixedly connected to the middle position of the bottom end of the rubber pad 205, and an elastic snap-fit ​​structure is formed between the elastic block 206 and the upper end inside the adjustment groove 207. The elastic snap-fit ​​between the elastic block 206 and the upper end inside the adjustment groove 207 further improves the stability of the limit fixation of the guide plate 201 after sliding.

[0037] In this embodiment, a sliding structure is formed between the adjustment block 208 and the interior of the adjustment groove 207. The cross-sections of the adjustment groove 207 and the adjustment block 208 are convex. The sliding of the convex adjustment block 208 and the interior of the adjustment groove 207 is utilized to improve the smoothness of the sliding of the guide plate 201 on the surface of the guide roller 1 or the tensioning roller 8.

[0038] The working principle and use process of the utility model are as follows: first, the spacing between the guide disks 201 is adjusted according to the width of the cold-rolled steel strip. At this time, the adjusting screw 202 is rotated to drive the clamping plate 204 to rise until the elastic block 206 is completely separated from the inside of the adjusting groove 207. Then, the guide disk 201 is pushed, and the adjusting block 208 is used to slide inside the adjusting groove 207, so that the guide disk 201 slides smoothly until the spacing between the two is slightly larger than the width of the cold-rolled steel strip. Then, the adjusting screw 202 is rotated in the opposite direction, so that the clamping plate 204 descends and drives the rubber pad 205 to descend and closely contact the surface of the guide roller 1 or the tensioning roller 8, and the elastic block 206 will be stuck to the upper end of the adjusting groove 207, so that the guide disk 201 can be limited and fixed after sliding, which is convenient for limiting and guiding the cold-rolled steel strips of different widths, so as to avoid deviation on the surface of the guide roller 1 or the tensioning roller 8 and affect the subsequent annealing operation.

[0039] Afterwards, the cold-rolled strip passes through the guide roller 1, the tensioning roller 8 and the guide roller 1 in sequence, and then the handle 3 is rotated to drive the threaded rod 12 to rotate. The threaded cooperation of the threaded rod 12 and the threaded block 11 makes the threaded block 11 move and drive the second tensioning box 704 to move, thereby driving the tensioning roller 8 to move up and down to adjust the tension of the cold-rolled strip to maintain a certain tension. Then, the tensioning roller 8 is pressed to drive the connecting seat 707 to slide, so that the sliding rod 702 descends and compresses the return spring 705 to a suitable position. Then, during the transportation of the cold-rolled strip, if it is too tight, it will further drive the tensioning roller 8 to descend and compress the return spring 705. When the cold-rolled strip is too loose, the elastic force of the return spring 705 can be used to make the tensioning roller 8 rise to tension the cold-rolled strip, and then the elastic force of the return spring 705 can be used to realize a certain range of automatic elastic tensioning adjustment of the tensioning roller 8, thereby ensuring a good tension during the transportation of the cold-rolled strip, avoiding the inconvenience of subsequent annealing caused by being too loose or too tight, and improving its practicality.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tensioning device for cold-rolled strip before annealing, comprising a base (5), characterized in that: Guide rollers (1) are rotatably connected to both sides of the top of the base (5); one end of the top of the base (5) is fixedly connected to a fixing frame (4); a reserved groove (13) is provided at the upper end of the fixing frame (4); a threaded rod (12) is rotatably connected to the inner bottom wall of the reserved groove (13); a rotating handle (3) extending to the outside of the fixing frame (4) is fixedly connected to the top of the threaded rod (12); a threaded block (11) is threadedly connected to the surface of the threaded rod (12); a self-tensioning component (7) is provided at one end of the threaded block (11); a tensioning roller (8) is provided at the top of the self-tensioning component (7); guide components (2) are provided at both ends of the surfaces of the guide roller (1) and the tensioning roller (8); The self-tensioning assembly (7) includes a first tensioning box (701), which is arranged at one end of the tensioning roller (8), and one end of the threaded block (11) is fixedly connected to the second tensioning box (704), and the inner bottom walls of the first tensioning box (701) and the second tensioning box (704) are fixedly connected to a return spring (705), and the top end of the return spring (705) is fixedly connected to a sliding rod (702) extending to the outside of the first tensioning box (701) and the second tensioning box (704), and the top end of the sliding rod (702) is fixedly connected to a connecting seat (707), and one end of the connecting seat (707) is rotatably connected to the two ends of the tensioning roller (8).

2. The cold-rolled strip pre-annealing tensioning device according to claim 1, characterized in that: Limiting grooves (703) are provided on both sides of the inner walls of the first tensioning box (701) and the second tensioning box (704), and limiting blocks (706) that are slidably matched with the inside of the limiting grooves (703) are fixedly connected to the bottom ends of both sides of the sliding rod (702).

3. The cold-rolled strip pre-annealing tensioning device according to claim 1, characterized in that: A fixing plate (6) is fixedly connected to one end of the top of the base (5) away from the fixing frame (4), a slide groove (9) is provided at the upper end of one end of the fixing plate (6), and a slider (10) that slidably cooperates with the inside of the slide groove (9) is fixedly connected to the first tensioning box (701).

4. The cold-rolled strip pre-annealing tensioning device according to claim 1, characterized in that: The guide assembly (2) comprises an adjustment groove (207), wherein the adjustment groove (207) is provided at both ends of the surface of the guide roller (1) and the tension roller (8), and the two ends of the surface of the guide roller (1) and the tension roller (8) are slidably connected with a guide disk (201), an adjustment block (208) is fixedly connected to the inner wall of the guide disk (201), a fixed block (203) is fixedly connected to one side of the guide disk (201), an adjustment screw (202) that passes through the fixed block (203) is threadedly connected to the top end of the fixed block (203), the bottom end of the adjustment screw (202) is fixedly connected to a clamping plate (204) via a bearing, and the bottom end of the clamping plate (204) is fixedly connected to a rubber pad (205).

5. The cold-rolled strip pre-annealing tensioning device according to claim 4, characterized in that: A sliding groove (209) is provided on one side of the guide plate (201), and a sliding block (210) is fixedly connected to one side of the clamping plate (204) and is slidably matched with the inside of the sliding groove (209).

6. The cold-rolled strip pre-annealing tensioning device according to claim 4, characterized in that: The rubber pad (205) is in an arc shape, and an anti-slip pattern is provided at the bottom end of the rubber pad (205).

7. The cold-rolled strip pre-annealing tensioning device according to claim 4, characterized in that: An elastic block (206) is fixedly connected to the middle position of the bottom end of the rubber pad (205), and an elastic engaging structure is formed between the elastic block (206) and the upper end inside the adjustment groove (207).

8. The cold-rolled strip pre-annealing tensioning device according to claim 4, characterized in that: A sliding structure is formed between the adjusting block (208) and the inside of the adjusting groove (207); the cross-sections of the adjusting groove (207) and the adjusting block (208) are convex.

Images