Safe uncoiler for cold-rolled sheet

Abstract

The invention relates to the field of metal processing, in particular to a cold-rolled sheet safety uncoiler which comprises an uncoiling base, an uncoiler body and a coiling block shaft and further comprises a connecting frame, stop levers, a feeding mechanism, a cutting mechanism and a protection assembly, the connecting frame is connected to the uncoiling base, the stop levers are connected to the left side and the right side of the connecting frame, and the ends of the stop levers are connected with the uncoiler body; a feeding mechanism used for conveying a steel coil is arranged on the uncoiling base, a cutting mechanism used for cutting a plastic film is installed at the bottom of the connecting frame, and protection assemblies used for preventing the steel coil from being scattered are arranged on the connecting frame and the stop rods. Guardrails in the protection assembly are automatically unfolded in the moving process of the steel coil, the left side and the right side of the steel coil are shielded, the steel coil is prevented from being bounced off after limitation is removed, a bent top plate with a torsional spring is arranged, it is guaranteed that when the steel coil is arranged on a winding drum shaft in a sleeving mode, a contact plate can be separated from the steel coil, and rebounding is achieved through a reset spring; and the plastic film can be scraped in the resetting process of the contact plate, so that automatic uncoiling is realized.

Description

Technical Field

[0001] The invention relates to the field of metal processing, and in particular to a safe uncoiler for cold-rolled plates. Background Art

[0002] Steel coil, as rolled steel coil, is an indispensable raw material in industrial production. Steel coil is usually further processed from hot-rolled steel coil, among which cold rolling is the key link in this process. Cold rolling is to use hot-rolled steel coil as raw material, remove the oxide scale after pickling, and then continuously cold-deform and roll to finally obtain hard-rolled coil. Due to the cold work hardening, the strength and hardness of this hard-rolled coil increase, while the toughness and plasticity index decrease, which is suitable for manufacturing parts that do not require complex deformation. The process of cold rolling production generally includes raw material preparation, pickling, rolling, degreasing, annealing and finishing, etc. This process requires high precision and high quality to ensure the performance of the final product.

[0003] In the existing unwinding process of steel coils, the unwinding machine plays a vital role. However, the current operation procedures of many unwinding machines are still relatively traditional. Specifically, when the steel coil is delivered to the vicinity of the unwinding machine, the operator usually uses a forklift to directly align the steel coil and put it on the reel shaft of the unwinding machine. Although this process is simple and direct, there are many inconveniences. The plastic film on the outside of the steel coil is ignored in this step and needs to be cut manually or mechanically in the subsequent unwinding process, which not only increases the operation steps, but may also affect the unwinding efficiency and steel coil quality.

[0004] However, the problems existing in the existing unwinding process are not limited to the coiling and plastic film processing. In particular, after the steel coil is released from restriction, that is, the plastic film is cut and the pressure roller is loosened, the steel coil will suddenly bounce open due to the elastic potential energy after bending, which not only poses a safety hazard to the equipment and operators, but may also cause scratches and deformation on the surface of the steel coil. Summary of the invention

[0005] In order to overcome the shortcomings of low uncoiling efficiency and potential safety hazards, the present invention provides an automatic safe uncoiling machine for cold-rolled plates.

[0006] A safe uncoiler for cold-rolled plates comprises an uncoiler base, an uncoiler and a reel shaft, wherein the uncoiler base is equipped with an uncoiler, the uncoiler is equipped with a reel shaft for placing steel coils, and further comprises a connecting frame, a baffle rod, a feeding mechanism, a cutting mechanism and a protective component, wherein the uncoiler base is connected with a connecting frame, baffle rods are connected with the left and right sides of the connecting frame, the ends of the baffle rods are connected to the uncoiler, a feeding mechanism for conveying steel coils is arranged on the uncoiler base, a cutting mechanism for cutting a plastic film wrapping the steel coils is arranged at the bottom of the connecting frame, and a protective component for preventing the steel coils from spreading is arranged on the connecting frame and the baffle rods.

[0007] Further explanation: the feeding mechanism includes a mobile base, wheels, an adjustment component and a placement plate. Several wheels are installed on both sides of the mobile base. The uncoiling base is provided with a groove. The wheels move in the groove. An adjustment component is provided on the mobile base. A placement plate for carrying the steel coil is provided on the adjustment component. The adjustment component is used to adjust the height of the placement plate, thereby adjusting the height of the steel coil.

[0008] Further explanation: the adjustment assembly includes a servo motor, a bidirectional threaded screw, a guide rod, a connecting sleeve, a connecting block and a connecting rod. A servo motor is installed on the movable base. The top front side of the movable base is rotatably connected to a bidirectional threaded screw, and the top rear side is fixedly connected to a guide rod. The servo motor is connected to one end of the bidirectional threaded screw. Two connecting sleeves are threadedly connected to the bidirectional threaded screw, and two connecting sleeves are slidably connected to the guide rod. The top of the connecting sleeve is rotatably connected to a connecting block, and the top of all connecting blocks are rotatably connected to a placement plate. A connecting rod is connected between the bidirectional threaded screw and the connecting blocks on the guide rod that are relatively located front and back.

[0009] Further description, the cutting mechanism includes a mounting frame, a limiting rod, a mounting block, a first elastic member, a cutting member and a buffer assembly. The mounting frame is connected in the middle of the connecting frame, the top of the mounting frame is slidably connected to the limiting rod, the bottom of the limiting rod is connected to the mounting block, the cutting member is installed in the mounting block, the limiting rod is sleeved with a first elastic member, one end of the first elastic member is connected to the mounting frame, and the other end is connected to the mounting block. A buffer assembly for reducing the impact of the steel coil is provided on the mounting frame.

[0010] Further description, the buffer assembly includes a telescopic tube, a telescopic rod, a bending plate and a second elastic member. The mounting frame is connected to the telescopic tube, the telescopic rod is slidably connected inside the telescopic tube, the bottom of the telescopic rod is connected to the bending plate, and the second elastic member is sleeved on the telescopic rod. One end of the second elastic member is connected to the telescopic tube, and the other end is connected to the bending plate.

[0011] Further description, the protection component includes a guardrail, a tension link, a return spring, a contact plate and an unlocking component. At least two guardrails are connected to the front side of the barrier rod, and at least two guardrails are slidably connected to the rear side of the barrier rod. A return spring is provided on the rear side of the barrier rod, and a return spring is connected between two adjacent guardrails on the rear side of the barrier rod. A contact plate is connected to the rearmost guardrail, and an unlocking component for squeezing the contact plate to move is provided at the rear end of the barrier rod.

[0012] Further explanation, the unlocking assembly includes an installation frame, a third elastic member, a fixing plate, a fixing member, a curved top plate and a torsion spring. The rear side of the rearmost side guardrail is connected to the installation frame, the contact plate is slidably connected to the installation frame, a third elastic member is arranged in the installation frame, one end of the third elastic member is connected to the installation frame, and the other end is connected to the contact plate. The rear end of the barrier rod is connected to a fixing plate, the fixing plate is connected to a fixing member, the fixing member is rotatably connected to the curved top plate, a docking hole is opened on the contact plate, the curved top plate passes through the docking hole, the curved top plate and the contact plate are squeezed together, a torsion spring is sleeved on the fixing member, one end of the torsion spring is connected to the fixing member, and the other end is connected to the curved top plate.

[0013] Further description, it also includes a buffer pad, and a buffer pad is arranged on the front side of the contact plate.

[0014] The beneficial effects of the present invention are:

[0015] 1. The steel coil is transported through the mobile base and wheels on the feeding mechanism, and the servo motor in the adjustment component drives the bidirectional threaded screw to rotate, so that the connecting sleeve drives the placement plate to move up and down, so as to adjust the height of the steel coil and facilitate the alignment of the steel coil with the reel shaft.

[0016] 2. The cutting member in the cutting mechanism automatically cuts the plastic film during the movement of the steel coil. At the same time, the bending plate and the telescopic rod cooperate with the second elastic member to open and buffer the plastic film on the surface of the steel coil, ensuring a smooth cutting process without causing damage to the steel coil, thereby completing the automatic cutting function.

[0017] 2. The guardrail in the protection component is automatically unfolded during the movement of the steel coil to block the left and right sides of the steel coil to prevent the steel coil from bouncing open after the restriction is released. A curved top plate with a torsion spring is provided to ensure that when the steel coil is sleeved on the reel shaft, the contact plate can be separated from the steel coil and rebounded by the reset spring, so that the plastic film can be scraped off during the reset process of the contact plate, thereby realizing automatic unwinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the specific structure of the uncoiler, the reel shaft and the connecting frame of the present invention.

[0020] Figure 3 It is a schematic diagram of the installation structure of the feeding mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the installation structure of the cutting mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of the installation structure of the protection component of the present invention.

[0023] Figure 6 It is a side view of the protection component of the present invention.

[0024] Figure 7 It is a schematic diagram of the connection structure of the contact plate, the mounting frame and the curved top plate of the present invention.

[0025] Figure 8 It is a schematic diagram of the connection structure of the torsion spring and the buffer pad of the present invention.

[0026] In the above figures: 1: unwinding base, 11: unwinding machine, 12: reel shaft, 13: connecting frame, 14: blocking rod, 2: feeding mechanism, 21: mobile base, 22: wheels, 23: adjustment assembly, 231: servo motor, 232: bidirectional threaded screw, 233: guide rod, 234: connecting sleeve, 235: connecting block, 236: connecting rod, 24: placing plate, 3: cutting mechanism, 31: mounting frame, 32: limiting rod, 33: mounting block, 34: first Elastic part, 35: cutting part, 36: buffer component, 361: telescopic tube, 362: telescopic rod, 363: bending plate, 364: second elastic part, 4: protection component, 41: guardrail, 42: stretching link, 43: return spring, 44: contact plate, 441: docking hole, 45: unlocking component, 451: installation frame, 452: third elastic part, 453: fixing plate, 454: fixing part, 455: bending top plate, 456: torsion spring, 46: buffer pad. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0028] Embodiment: A cold-rolled plate safety unwinding machine, such as Figure 1-Figure 8 As shown, it includes an uncoiling base 1, an uncoiling machine 11 and a reel shaft 12. The uncoiling base 1 is equipped with an uncoiling machine 11. The uncoiling machine 11 is equipped with a reel shaft 12 for placing steel coils, and the reel shaft 12 can support the steel coils. It also includes a connecting frame 13, a blocking rod 14, a feeding mechanism 2, a cutting mechanism 3 and a protective component 4. The uncoiling base 1 is connected to the connecting frame 13, and a blocking rod 14 passes through the middle of the connecting frame 13. The end of the blocking rod 14 is connected to the uncoiling machine 11. The uncoiling base 1 is provided with a feeding mechanism 2 for conveying the steel coil. The feeding mechanism 2 mainly drives the moving base 21 to move on the uncoiling base 1 through the driving wheel 22. A cutting mechanism 3 for cutting the plastic film wrapped around the steel coil is installed at the bottom of the connecting frame 13. The cutting mechanism 3 mainly cuts the plastic film of the steel coil through the cutting piece 35. The connecting frame 13 and the blocking rod 14 are provided with a protective component 4 for preventing the steel coil from spreading. The protective component 4 mainly blocks the unfolded steel coil through the guardrail 41.

[0029] The staff uses a forklift or other equipment to place the steel coil wrapped in plastic film on the feeding mechanism 2, then drives the wheel 22 to transport the steel coil, and adjusts the height of the steel coil up and down through the adjustment component 23. When the steel coil approaches the uncoiler 11, the plastic film on the top is cut by the cutting piece 35 of the cutting mechanism 3, and the steel coil is aligned with the reel shaft 12 and finally sleeved on the reel shaft 12. After the plastic film is completely cut, the end of the steel coil will pop outward, and the protective component 4 will be pushed during the movement of the steel coil. The movable guardrail 41 protects the left and right sides of the steel coil to reduce the length of the steel coil popping out, and also protects nearby staff. The uncoiler 11 drives the reel shaft 12 to open and fix the steel coil, and then pulls the end of the steel coil for subsequent processing.

[0030] like Figure 1-Figure 3 As shown, the feeding mechanism 2 includes a mobile base 21, wheels 22, an adjusting component 23 and a placing plate 24. Multiple wheels 22 are installed on both sides of the mobile base 21. The unwinding base 1 is provided with a groove, and the wheel 22 moves in the groove. A power device is provided in the mobile base 21, which can drive the wheel 22 to rotate. An adjusting component 23 is provided on the mobile base 21, and a placing plate 24 for carrying the steel coil is provided on the adjusting component 23. The adjusting component 23 is used to adjust the height of the placing plate 24, thereby adjusting the height of the steel coil, so as to facilitate the alignment of the middle through hole of the steel coil with the reel shaft 11.

[0031] like Figure 3 As shown, the adjustment assembly 23 includes a servo motor 231, a bidirectional threaded screw 232, a guide rod 233, a connecting sleeve 234, a connecting block 235 and a connecting rod 236. The servo motor 231 is installed on the mobile base 21. The front side of the top of the mobile base 21 is rotatably connected to the bidirectional threaded screw 232. The rear side of the top of the mobile base 21 is fixedly connected to the guide rod 233. The servo motor 231 is connected to one end of the bidirectional threaded screw 232. Two connecting sleeves 234 are threadedly connected to the bidirectional threaded screw 232. 4. The two connecting sleeves 234 on the bidirectional threaded screw 232 are symmetrically distributed. Two connecting sleeves 234 are slidably connected to the guide rod 233. The top of the connecting sleeve 234 is rotatably connected to a connecting block 235. The tops of the four connecting blocks 235 are rotatably connected to the placement plate 24. The placement plate 24 is high on the left and right sides and low in the middle, so that the steel coil can be placed stably. A connecting rod 236 is connected between the bidirectional threaded screw 232 and the connecting blocks 235 on the guide rod 233 that are opposite to each other in the front and rear positions, so that the front and rear connecting blocks 235 can move together.

[0032] After the steel coil is placed on the placement plate 24, the driving wheel 22 drives the mobile base 21 to move. According to the height of the steel coil axis, the servo motor 231 is started. The servo motor 231 drives the bidirectional threaded screw 232 to rotate, and the connecting sleeve 234 threadedly matched with it slides on the bidirectional threaded screw 232, thereby driving the placement plate 24 to move up and down through the connecting block 235. At the same time, the connecting rod 236 ensures the synchronous displacement of the connecting blocks 235 at the front and rear positions to maintain the stability of the placement plate 24 and keep the steel coil in a horizontal state. The mobile base 21 finally delivers the steel coil to the reel shaft 12. Since the threads on both sides of the bidirectional threaded screw 232 are reversed, the connecting sleeves 234 are close to or away from each other, the placement plate 24 will not tilt, and the bidirectional threaded screw 232 is stably connected to the connecting sleeve 234, thereby ensuring stability when adjusting the height of the steel coil.

[0033] like Figure 2 and Figure 4 As shown, the cutting mechanism 3 includes a mounting frame 31, a limiting rod 32, a mounting block 33, a first elastic member 34, a cutting member 35 and a buffer assembly 36. The mounting frame 31 is connected to the bottom middle side of the connecting frame 13. The top of the mounting frame 31 is slidably connected to the limiting rod 32. The top of the limiting rod 32 cannot pass downward through the mounting frame 31. The bottom of the limiting rod 32 is connected to the mounting block 33. The cutting member 35 is installed in the mounting block 33. The mounting block 33 is provided with a power device for driving the cutting member 35 to rotate, or the edge of the cutting member 35 is sharp enough to ensure the cutting effect on the plastic film. The limiting rod 32 is sleeved with a first elastic member 34. One end of the first elastic member 34 is connected to the mounting frame 31, and the other end is connected to the mounting block 33. The mounting frame 31 is provided with a buffer assembly 36 for reducing the impact of the steel coil.

[0034] like Figure 4 As shown, the buffer assembly 36 includes a telescopic tube 361, a telescopic rod 362, a bending plate 363 and a second elastic member 364. The mounting frame 31 is connected to the telescopic tube 361, and the telescopic rod 362 is slidably connected inside the telescopic tube 361. The bottom of the telescopic rod 362 is connected to the bending plate 363. The front and rear ends of the bending plate 363 are bent upward, so that the contact surface with the steel coil is an inclined surface. The second elastic member 364 is sleeved on the telescopic rod 362, and one end of the second elastic member 364 is connected to the telescopic tube 361, and the other end is connected to the bending plate 363.

[0035] During the movement of the steel coil, the top contacts the bending plate 363 and squeezes the bending plate 363 to move upward. The bending plate 363 pushes the telescopic rod 362 to slide upward in the telescopic tube 361 and compresses the second elastic member 364. The bending plate 363 squeezes the plastic film on the surface of the steel coil and stretches the plastic film to both sides. Then the steel coil contacts the cutting member 35, and the cutting member 35 cuts the stretched plastic film. During the squeezing process between the steel coil and the cutting member 35, the steel coil also pushes the cutting member 35 to slide upward. The mounting block 33 and the limiting rod 32 slide in the mounting frame 31, compressing the first elastic member 34 to ensure that the pressure of the cutting member 35 on the steel coil is not too large, resulting in damage to the steel coil. After the steel coil passes through the cutting member 35, the first elastic member 34 rebounds, and the cutting member 35, the mounting block 33 and the limiting rod 32 are reset downward under the action of the resilience of the first elastic member 34 and their own gravity. After the steel coil detaches from the bending plate 363, the resilience of the second elastic member 364 pushes the bending plate 363 and the telescopic rod 362 to reset.

[0036] like Figure 5-Figure 8 As shown, the protection component 4 includes a guardrail 41, a tension link 42, a return spring 43, a contact plate 44 and an unlocking component 45. Four guardrails 41 are fixedly connected to the front side of the baffle rod 14, and five guardrails 41 are slidably connected to the rear side of the baffle rod 14. A guardrail 41 is also connected to the rear side of the connecting frame 13. A return spring 43 is connected between two adjacent guardrails 41 on the rear side of the connecting frame 13. There are five return springs 43. A contact plate 44 is connected to the rearmost guardrail 41. The distance between the left and right contact plates 44 is less than the diameter of the steel coil. The height in the middle of the contact plate 44 is consistent with the height of the center point of the reel shaft 11 to ensure that the steel coil can contact the contact plate 44. An unlocking component 45 for squeezing the contact plate 44 to move is provided at the rear end of the baffle rod 14.

[0037] like Figure 6-Figure 8 As shown, the unlocking assembly 45 includes a mounting frame 451, a third elastic member 452, a fixing plate 453, a fixing member 454, a curved top plate 455 and a torsion spring 456. The rear side of the rearmost side guardrail 41 is connected to the mounting frame 451, the contact plate 44 is slidably connected to the mounting frame 451, a third elastic member 452 is arranged in the mounting frame 451, one end of the third elastic member 452 is connected to the mounting frame 451, and the other end is connected to the contact plate 44. The rear end of the blocking rod 14 is connected to the fixing plate 453, the fixing plate 453 is connected to the fixing member 454, the fixing member 454 is rotatably connected to the curved top plate 455, the contact plate 44 is provided with a docking hole 441, the curved top plate 455 passes through the docking hole 441, the curved top plate 455 is pressed and matched with the contact plate 44, and a torsion spring 456 is sleeved on the fixing member 454, one end of the torsion spring 456 is connected to the fixing member 454, and the other end is connected to the curved top plate 455.

[0038] After the rear end of the steel coil passes through the connecting frame 13, it contacts the contact plate 44 and pushes the contact plate 44 to move backward. The contact plate 44 drives the mounting frame 451 and the connected guardrail 41 to move backward. The return spring 43 between the guardrails 41 keeps the distance between them uniform, so that the guardrail 41 can completely wrap the left and right sides of the steel coil. As the steel coil moves, the contact plate 44 gradually approaches the curved top plate 455. When the steel coil is completely sleeved on the reel shaft 12, the curved top plate 455 passes through the docking hole 441 of the contact plate 44 and squeezes the contact plate 44 to slide to the left and right sides. During the sliding process of the mounting frame 451, the contact plate 44 stretches the third elastic member 452 and separates from the steel coil. At this time, the stretched return spring 43 rebounds, and the connecting frame 13 is behind The side guardrail 41 slides on the baffle bar 14 and approaches the connecting frame 13, thereby driving the mounting frame 451 and the contact plate 44 to move forward. During the forward movement of the contact plate 44, it disengages from the bent top plate 455. The third elastic member 452 rebounds to make the contact plate 44 contact the side of the steel coil, thereby taking away the plastic film on the surface of the steel coil to prevent the plastic film that is still connected to the steel coil after cutting from needing to be removed manually. Before the bent top plate 455 contacts the contact plate 44, the torsion spring 456 twists the bent top plate 455 to ensure that the front end of the bent top plate 455 can be aligned with the docking hole 441 of the contact plate 44. During the disengagement of the bent top plate 455 from the contact plate 44, the torsion spring 456 twists to reduce the resistance generated by the bent top plate 455 to the movement of the contact plate 44.

[0039] like Figure 8 As shown, a buffer pad 46 is further included. A buffer pad 46 is disposed on the front side of the contact plate 44 .

[0040] During the contact and extrusion process between the contact plate 44 and the steel coil, the buffer pad 46 can buffer the pressure of the steel coil on the contact plate 44, thereby reducing the friction loss of the steel coil on the contact plate 44. The elasticity of the buffer pad 46 also makes the connection between the steel coil and the contact plate 44 more stable, reducing the sliding of the contact plate 44 on the front side of the steel coil.

[0041] First, the steel coil is placed on the placement plate 24 of the feeding mechanism 2, and the placement plate 24 moves in the groove of the unwinding base 1 through the wheels 22 on the moving base 21, so as to transport the steel coil to the vicinity of the reel shaft 12 of the unwinding machine 11. The adjusting component 23 of the feeding mechanism 2 drives the bidirectional threaded screw 232 to rotate through the servo motor 231, so that the connecting sleeve 234 slides on the bidirectional threaded screw 232, and drives the placement plate 24 to move up and down through the connecting block 235 and the connecting rod 236, so as to accurately adjust the height of the steel coil to align it with the reel shaft 12. During the movement of the steel coil, the cutting member 35 of the cutting mechanism 3 slides on the top of the steel coil, and at the same time, the bending plate 363, through the cooperation of the telescopic rod 362 and the second elastic member 364, opens and buffers the plastic film on the surface of the steel coil, ensuring that the cutting member 35 can cut the plastic film smoothly and accurately. After the cutting is completed, the steel coil continues to move and pushes the contact plate 44 of the protection component 4 to move backward. The contact plate 44 drives the guardrail 41 to slide and unfold on the blocking rod 14, wrapping the left and right sides of the steel coil to prevent the steel coil from suddenly popping open after the restriction is released. When the steel coil is completely sleeved on the reel shaft 12, the curved top plate 455 of the unlocking component 45 passes through the docking hole 441 of the contact plate 44 and forces the contact plate 44 to slide apart to the left and right sides, so that the contact plate 44 is separated from the steel coil, and the reset spring 43 rebounds, driving the guardrail 41 and the contact plate 44 to reset. During the reset process, the contact plate 44 contacts the steel coil through the buffer pad 46 on its front side to scrape off the residual plastic film.

[0042] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A safe uncoiler for cold-rolled sheets, comprising an uncoiler base (1), an uncoiler (11) and a reel shaft (12), wherein the uncoiler base (1) is mounted with the uncoiler (11), and the reel shaft (12) for placing steel coils is mounted with the uncoiler (11), wherein: The invention also comprises a connecting frame (13), a blocking rod (14), a feeding mechanism (2), a cutting mechanism (3) and a protective assembly (4); the connecting frame (13) is connected to the unwinding base (1); the blocking rods (14) are connected to the left and right sides of the connecting frame (13); the ends of the blocking rods (14) are connected to the unwinding machine (11); the unwinding base (1) is provided with a feeding mechanism (2) for conveying the steel coil; the bottom of the connecting frame (13) is provided with a cutting mechanism (3) for cutting the plastic film wrapping the steel coil; the connecting frame (13) and the blocking rod (14) are provided with a protective assembly (4) for preventing the steel coil from spreading.

2. The cold-rolled sheet safety uncoiler according to claim 1, characterized in that: The feeding mechanism (2) comprises a movable base (21), wheels (22), an adjustment component (23) and a placement plate (24); wheels (22) are installed on both sides of the movable base (21); a groove is provided on the unwinding base (1); the wheels (22) move in the groove; an adjustment component (23) is arranged on the movable base (21); a placement plate (24) for carrying a steel coil is arranged on the adjustment component (23); the adjustment component (23) is used to adjust the height of the placement plate (24), thereby adjusting the height of the steel coil.

3. The cold-rolled sheet safety uncoiler according to claim 2, characterized in that: The adjusting assembly (23) comprises a servo motor (231), a bidirectional threaded screw (232), a guide rod (233), a connecting sleeve (234), a connecting block (235) and a connecting rod (236). The servo motor (231) is mounted on the movable base (21). The top front side of the movable base (21) is rotatably connected to the bidirectional threaded screw (232). The top rear side of the movable base (21) is fixedly connected to the guide rod (233). The servo motor (231) and the bidirectional threaded screw are connected to the movable base (21). (232) is connected at one end, two connecting sleeves (234) are threadedly connected on the bidirectional threaded screw rod (232), two connecting sleeves (234) are slidably connected on the guide rod (233), the top of the connecting sleeve (234) is rotatably connected with a connecting block (235), the top of all the connecting blocks (235) are rotatably connected to the placement plate (24), and a connecting rod (236) is connected between the bidirectional threaded screw rod (232) and the connecting blocks (235) on the guide rod (233) that are located in front and back positions and are opposite to each other.

4. The cold-rolled sheet safety uncoiler according to claim 3 is characterized in that: The cutting mechanism (3) comprises a mounting frame (31), a limiting rod (32), a mounting block (33), a first elastic member (34), a cutting member (35) and a buffer assembly (36); the mounting frame (31) is connected in the middle of the connecting frame (13); the top of the mounting frame (31) is slidably connected to the limiting rod (32); the bottom of the limiting rod (32) is connected to the mounting block (33); the cutting member (35) is installed in the mounting block (33); the limiting rod (32) is sleeved with a first elastic member (34); one end of the first elastic member (34) is connected to the mounting frame (31) and the other end is connected to the mounting block (33); and a buffer assembly (36) for reducing the impact of the steel coil is arranged on the mounting frame (31).

5. The cold-rolled sheet safety uncoiler according to claim 4 is characterized in that: The buffer assembly (36) comprises a telescopic tube (361), a telescopic rod (362), a bending plate (363) and a second elastic member (364); the mounting frame (31) is connected to the telescopic tube (361); the telescopic rod (362) is slidably connected inside the telescopic tube (361); the bottom of the telescopic rod (362) is connected to the bending plate (363); the second elastic member (364) is sleeved on the telescopic rod (362); one end of the second elastic member (364) is connected to the telescopic tube (361), and the other end is connected to the bending plate (363).

6. The cold-rolled sheet safety uncoiler according to claim 5, characterized in that: The protection component (4) comprises a guardrail (41), a tension link (42), a return spring (43), a contact plate (44) and an unlocking component (45); at least two guardrails (41) are connected to the front side of the blocking rod (14); at least two guardrails (41) are slidably connected to the rear side of the blocking rod (14); a return spring (43) is sleeved on the rear side of the blocking rod (14); a return spring (43) is connected between two adjacent guardrails (41) on the rear side of the blocking rod (14); a contact plate (44) is connected to the rearmost guardrail (41); and an unlocking component (45) for squeezing the contact plate (44) to move is arranged at the rearmost end of the blocking rod (14).

7. The cold-rolled sheet safety uncoiler according to claim 6, characterized in that: The unlocking assembly (45) comprises a mounting frame (451), a third elastic member (452), a fixing plate (453), a fixing member (454), a curved top plate (455) and a torsion spring (456); the rear side of the rearmost side guardrail (41) is connected to the mounting frame (451); the contact plate (44) is slidably connected to the mounting frame (451); the mounting frame (451) is provided with a third elastic member (452); one end of the third elastic member (452) is connected to the mounting frame (451) and the other end is connected to the contact plate (44); the blocking rod (14 ) is connected to a fixing plate (453) at the rear end, the fixing plate (453) is connected to a fixing member (454), a curved top plate (455) is rotatably connected to the fixing member (454), a docking hole (441) is formed on the contact plate (44), the curved top plate (455) passes through the docking hole (441), the curved top plate (455) and the contact plate (44) are pressed and matched, a torsion spring (456) is sleeved on the fixing member (454), one end of the torsion spring (456) is connected to the fixing member (454), and the other end is connected to the curved top plate (455).

8. The cold-rolled sheet safety uncoiler according to claim 7, characterized in that: The invention also comprises a buffer pad (46), wherein the buffer pad (46) is arranged on the front side of the contact plate (44).

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