CN216066349U - Cutting device for steel coil - Google Patents

Abstract

The utility model relates to the technical field of steel coil cutting, in particular to a cutting device for a steel coil, which comprises a workbench, wherein an unreeling support is fixed at one end of the top of the workbench, a connecting frame is rotatably sleeved on the outer ring of a straight rod, a second cutting tool is rotatably installed at the other end of the connecting frame, a plurality of openings corresponding to the second cutting tool are formed in the top of the workbench in a penetrating mode, a limiting device is installed between the end part of the connecting frame and the workbench, and a rotation driving device is installed at the bottom of the workbench and drives the second cutting tool to rotate after the second cutting tool is turned upwards. This device passes through the setting of link and dwang for the device is adjusted the position of second cutting tool through the upset link, thereby makes the device can be when needs fixed connection frame cut the coil of strip, is convenient for to the cutting adjustment of coil of strip, is favorable to improving the adjustability of device cutting.

Description

Cutting device for steel coil

Technical Field

The utility model relates to the field of steel coil cutting, in particular to a cutting device for a steel coil.

Background

The steel coil, also known as coil steel, steel hot pressing, cold press forming are the coil shape, in order to make things convenient for storage and transportation, conveniently carry out various processing, and stainless steel coil has the quality light, and advantages such as corrosion resistance is good are by extensive application in each field, but the size of steel coil is fixed, and need use the steel sheet of different sizes in the use scene of difference, consequently need cut processing to the steel coil.

The prior art discloses an invention patent in the aspect of partial steel coil cutting, and the patent with the application number of 201921615894.X discloses a stainless steel coil specific size cutting device, which comprises a bottom plate, wherein an unwinding mechanism, two guide mechanisms, a first winding mechanism and a second winding mechanism are sequentially arranged at the top of the bottom plate from right to left, two third supporting blocks are arranged between the two guide mechanisms at the top of the bottom plate, a connecting rod is arranged between the two third supporting blocks, a T-shaped sliding groove is formed in one side of the connecting rod, a scale mark is arranged at the edge of one side of the T-shaped sliding groove at the top of the connecting rod, two cutting mechanisms are arranged in the T-shaped sliding groove, each cutting mechanism comprises a T-shaped sliding block, and a cutting blade is arranged on each T-shaped sliding block.

The cutting device of current is carrying out specific dimension's cutting in-process to the coil of strip, because the cutter can only carry out the horizontal migration of position, leads to the coil of strip to only can carry out the cutting of width and adjust and can't cut the steel sheet width after the coil of strip unreels, must can cut the width when the coil of strip passes through the device simultaneously to the cutting that leads to the device can't be adjusted as required, and application scope is little, has reduced the suitability. To this end, the present invention proposes a cutting device for steel coils to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a cutting device for a steel coil.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows: the utility model provides a cutting device for coil of strip, includes the workstation, the one end at workstation top is fixed with unreels the support, the middle part at workstation top rotates and is connected with the live-rollers, the other end fixed mounting at workstation top has cutting device, the bottom of workstation is fixed with the straight-bar, the outer lane of straight-bar rotates the cover and is equipped with the link, the other end of link rotates and installs second cutting tool, the top of workstation runs through and sets up a plurality of openings corresponding with second cutting tool, install stop device between the tip of link and the workstation, the rotation drive arrangement is installed to the bottom of workstation, the rotation drive arrangement drives its rotation after second cutting tool upwards overturns; when the cutting device works, in the process of cutting a steel coil by a specific size, because the cutter can only horizontally move, the steel coil only can be subjected to width cutting adjustment and cannot cut the width of a steel plate after the steel coil is unreeled, and meanwhile, the steel coil inevitably can be cut when passing through the device, so that the cutting of the device cannot be adjusted according to needs, the application range is small, and the applicability is reduced. The link can install second cutting tool, and the removal that the upset through the link drove second cutting tool is adjusted, second cutting tool can pass the opening and cuts the width of adjustment coil of strip thereby the stop device can be fixed with the link after the upset, make the link drive second cutting tool pass the opening, rotation drive arrangement can drive second cutting tool and rotate when the link is fixed by stop device, thereby make the device can overturn the link when needs cut the coil of strip and make second cutting tool pass the opening and rotate the cutting, can put down second cutting tool when need not to cut the coil of strip, make the coil of strip smoothly pass through not cut, thereby be favorable to improving the controllability when device cutting, thereby be favorable to controlling the size of coil of strip cutting.

Preferably, the cutting device comprises a support, the support is fixed to the top of the workbench, an air cylinder is fixed to the top of the support, and an output end of the air cylinder penetrates through the support and extends out of the support to be fixed with a first cutting tool; during operation, the support can be fixed the cylinder at the top of workstation, and the cylinder can drive reciprocating of first cutting tool, and first cutting tool can cut the coil of strip that unreels after reciprocating to adjust the length of coil of strip, make the device can cut the regulation to the size of coil of strip, thereby be favorable to carrying out the cutting of scaling-off to the coil of strip.

Preferably, the limiting device comprises a third limiting block and a plurality of fixing blocks, all the fixing blocks are fixed at the bottom of the workbench and correspond to the connecting frame, a limiting groove is formed in each fixing block, a fourth limiting block is movably inserted in each limiting groove, the third limiting block is fixed at the end of the connecting frame, round corners are formed in the opposite sides of the third limiting block and the fourth limiting block, the other end of the fourth limiting block penetrates through the fixing blocks and extends out to be fixed with a convex block, a second spring is fixed between the convex block and the fixing block, and the second spring is sleeved on the outer ring of the fourth limiting block; the during operation, the link drives third stopper rebound in-process that upwards overturns, insert the inside of spacing groove after the third stopper rebound, the inside of fixed block is seted up in the spacing groove, simultaneously the inside of fixed block is inserted and is equipped with the fourth stopper, third stopper rebound in-process passes through the fourth stopper through the fillet extrusion, the third stopper moves to third stopper department under the promotion of second spring through back fourth stopper, thereby make the burnishing surface of third stopper and fourth stopper extrude each other, thereby carry out spacing fixed to the fourth stopper, thereby fix the position of link, make the device can overturn the link and fix it when needs cutting, make the second cutting tool fixed cut after the opening that corresponds is inside, thereby be favorable to adjusting the cutting of coil of strip.

Preferably, the rotation driving device comprises a plurality of fixed disks, all the fixed disks are fixed at the bottom of the workbench, rotating rods are rotatably mounted in the fixed disks, the adjacent rotating rods are connected with each other through an inserting structure, second limiting blocks are fixed at the end parts of the adjacent rotating rods, first limiting blocks are fixed at two ends of a rotating shaft of the second cutting tool, the first limiting blocks are matched with the second limiting blocks, a motor is fixed on the side wall of the workbench through screws, and an output shaft of the motor is fixedly connected with one rotating rod; when the device works, the fixed disc can rotatably install the rotating rods, so that the rotating rods are installed at the bottom of the workbench, the output shaft of the motor drives the rotating rods to rotate, the adjacent rotating rods are connected with each other through the splicing structure to synchronously rotate, the rotating rods are extruded through the splicing structure after the second cutting tool is overturned and fixed, and simultaneously the first limiting block is butted with the second limiting block after passing through the splicing structure, so that the rotating rods drive the second limiting block to rotate after rotating, the second limiting block drives the first limiting block to rotate, the first limiting block drives the second cutting tool to rotate for cutting, so that the device can be connected with the rotating rods through the splicing structure to drive the second cutting tool to rotate when the second cutting tool is not overturned and fixed, and drive the second cutting tool to rotate after the second cutting tool is overturned and fixed, and simultaneously drive the adjacent rotating rods to rotate through the connection of the second cutting tool, thereby make the motor can drive whole dwangs and rotate to can drive the rotation of second cutting tool after the second cutting tool upset is fixed, thereby be favorable to adjusting the cutting of device.

Preferably, the inserting structure comprises two first springs, the two first springs are respectively rotatably sleeved on outer rings of two adjacent rotating rods, the other ends of the two first springs are respectively rotatably abutted against adjacent fixed disks, opposite sides of the two first springs are respectively fixed with a first inserting cylinder and a second inserting cylinder, side walls of the first inserting cylinder and the second inserting cylinder are symmetrically provided with two inserting grooves, inserting blocks are respectively inserted into the two groups of inserting grooves in a sliding manner, the two groups of inserting blocks are respectively fixedly connected with the two adjacent rotating rods, the first inserting cylinder and the second inserting cylinder are mutually inserted, and the bottoms of the first inserting cylinder and the second inserting cylinder are respectively provided with arc surfaces; when the device works, when the connecting frame is not turned and fixed, the first inserting cylinder and the second inserting cylinder are inserted with each other, the rotating rod drives the inserting block to rotate after rotating, the inserting block is inserted into the inserting groove to drive the first inserting cylinder to rotate, the first inserting cylinder drives the second inserting cylinder to rotate, so that the adjacent rotating rod is driven to rotate by the inserting groove and the inserting block on the side wall of the second inserting cylinder, in the turning process of the connecting frame, the second cutting tool extrudes the arc-shaped surfaces at the edges of the first inserting cylinder and the second inserting cylinder, so as to push the first inserting cylinder and the second inserting cylinder to be away from each other, after the connecting frame is turned and put down, the first spring pushes the first inserting cylinder and the second inserting cylinder to move relatively to restore the inserting, the device can drive all the rotating rods to rotate when the second cutting tool is fixed and removed, so that the device can adjust the second cutting tool to cut at any corresponding position, the cutting device is beneficial to improving the cutting adjustability of the device.

Preferably, the bottom of the connecting frame is provided with a supporting pad; during operation, after the connecting frame is overturned and put down, the supporting pad can support the connecting frame, so that the connecting frame can be stably placed on the bottom surface, and the stability of the device is improved.

Preferably, the rotating roller is an elastic rubber rotating roller; during operation, the live-rollers self of elastic rubber material can produce deformation to when making the coil of strip piece of different thickness pass through the live-rollers bottom, the live-rollers can provide the space of stepping down through the elasticity of self when producing the extrusion conveying to the coil of strip, thereby makes the device can cut the coil of strip of different thickness, thereby is favorable to improving the suitability of device.

Compared with the prior art, the utility model has the following beneficial effects: this device passes through the setting of link and dwang for the device can be adjusted the position of second cutting tool through the upset link, thereby makes the device can be when needs fixed link cuts the coil of strip, moves away second cutting tool when the coil of strip need not to carry out the width cutting, thereby is convenient for to the cutting adjustment of coil of strip, is favorable to improving the adjustable nature when device cutting.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic structural diagram of the worktable of the present invention after being sectioned.

Fig. 3 is a partially enlarged structural diagram of a portion a in fig. 2 according to the present invention.

Fig. 4 is a partially enlarged structural diagram of the utility model at B in fig. 2.

Fig. 5 is a schematic structural diagram of the workbench, the first insertion tube and the second insertion tube after cross-section.

Fig. 6 is a partially enlarged structural view of the part C in fig. 5 according to the present invention.

Fig. 7 is a partially enlarged structural view of the utility model at D in fig. 5.

Fig. 8 is a schematic structural diagram of the first socket barrel and the second socket barrel after explosion.

In the figure: 1. a work table; 2. unwinding the support; 3. a rotating roller; 4. a support; 5. a cylinder; 6. a first cutting tool; 7. a straight rod; 8. a connecting frame; 9. a second cutting tool; 10. a first stopper; 11. rotating the rod; 12. fixing the disc; 13. a first spring; 14. a first insertion tube; 15. a second insertion tube; 16. an insertion block; 17. inserting grooves; 18. a second limiting block; 19. an arc-shaped surface; 20. a third limiting block; 21. a fixed block; 22. a motor; 23. a limiting groove; 24. a fourth limiting block; 25. a bump; 26. a second spring; 27. and (4) opening.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1-8, the cutting device for a steel coil comprises a workbench 1, wherein an unreeling support 2 is fixed at one end of the top of the workbench 1, a rotating roller 3 is rotatably connected to the middle of the top of the workbench 1, a cutting device is fixedly installed at the other end of the top of the workbench 1, a straight rod 7 is fixed at the bottom of the workbench 1, a connecting frame 8 is rotatably sleeved on the outer ring of the straight rod 7, a second cutting tool 9 is rotatably installed at the other end of the connecting frame 8, a plurality of openings 27 corresponding to the second cutting tool 9 are formed in the top of the workbench 1 in a penetrating manner, a limiting device is installed between the end of the connecting frame 8 and the workbench 1, and a rotation driving device is installed at the bottom of the workbench 1 and drives the second cutting tool 9 to rotate after the second cutting tool 9 is turned upwards; when the cutting device works, in the process of cutting a steel coil with a specific size, because the cutter can only horizontally move, the steel coil only can be subjected to width cutting adjustment but cannot be used for adjusting the width of a steel plate after the steel coil is unreeled, the application range is small, the applicability is reduced, and meanwhile, the width is inevitably cut when the steel coil passes through the device, so that the cutting of the device cannot be adjusted according to the requirements, the technical scheme can solve the problems, and the specific implementation mode is as follows, the workbench 1 can support the whole device, the unreeling support 2 can sleeve the steel coil so as to support and unreel the steel coil, the rotating roller 3 can press the unreeled steel coil downwards, so that the steel coil is attached to the surface of the workbench 1 to unreel, and the cutting device can transversely cut the steel coil, thereby adjusting the length of the steel plate after the steel coil is cut, the straight rod 7 can support the end part of the connecting frame 8, the connecting frame 8 can install the second cutting tool 9, the second cutting tool 9 can be driven to move and adjust through the overturning of the connecting frame 8, the second cutting tool 9 can penetrate through the opening 27 to cut the steel coil so as to adjust the width of the steel coil, the limiting device can fix the overturning connecting frame 8, the connecting frame 8 can drive the second cutting tool 9 to penetrate through the opening 27, the rotary driving device can drive the second cutting tool 9 to rotate when the connecting frame 8 is fixed by the limiting device, so that the device can overturn the connecting frame 8 to enable the second cutting tool 9 to penetrate through the opening 27 to rotate and cut when the steel coil needs to be cut, the second cutting tool 9 can be put down when the steel coil does not need to be cut, the steel coil can smoothly pass through and is not cut, and the adjustability of the device during cutting can be improved, thereby being beneficial to controlling the cutting size of the steel coil, enlarging the application range and improving the applicability.

As an embodiment of the utility model, the cutting device comprises a bracket 4, the bracket 4 is fixed on the top of the workbench 1, an air cylinder 5 is fixed on the top of the bracket 4, and the output end of the air cylinder 5 penetrates through the bracket 4 and extends out to be fixed with a first cutting tool 6; during operation, support 4 can fix cylinder 5 at the top of workstation 1, and cylinder 5 can drive reciprocating of first cutting tool 6, can cut the coil of strip that unreels after first cutting tool 6 reciprocates to adjust the length of coil of strip, make the device can cut the regulation to the size of coil of strip, thereby be favorable to carrying out the cutting of scaling-off to the coil of strip.

As an embodiment of the utility model, the limiting device comprises a third limiting block 20 and a plurality of fixing blocks 21, all the fixing blocks 21 are fixed at the bottom of the workbench 1 and correspond to the connecting frame 8, a limiting groove 23 is formed in the fixing block 21, a fourth limiting block 24 is movably inserted in the limiting groove 23, the third limiting block 20 is fixed at the end of the connecting frame 8, the opposite sides of the third limiting block 20 and the fourth limiting block 24 are both provided with a circular corner, the other end of the fourth limiting block 24 penetrates through the fixing block 21 and extends out to be fixed with a convex block 25, a second spring 26 is fixed between the convex block 25 and the fixing block 21, and the second spring 26 is sleeved on the outer ring of the fourth limiting block 24; when the device works, the connecting frame 8 drives the third limiting block 20 to move upwards in the upwards turning process, the third limiting block 20 moves upwards and then is inserted into the limiting groove 23, the limiting groove 23 is arranged in the fixing block 21, meanwhile, the fourth limiting block 24 is inserted into the fixing block 21, the third limiting block 20 is extruded through the fourth limiting block 24 through a round angle in the upwards moving process, the third limiting block 20 moves towards the third limiting block 20 under the pushing of the second spring 26 through the fourth limiting block 24, so that the flat surfaces of the third limiting block 20 and the fourth limiting block 24 are mutually extruded, the fourth limiting block 24 is limited and fixed, the position of the connecting frame 8 is fixed, the device can turn over the connecting frame 8 and fix the connecting frame 8 when the steel coil needs to be cut, the second cutting tool 9 is fixed inside the corresponding opening 27 for cutting the steel coil, and the adjustment of the steel coil is facilitated, so that the second cutting tool 9 can cut stably at the cutting station.

As an embodiment of the present invention, the rotation driving device includes a plurality of fixed disks 12, all the fixed disks 12 are fixed at the bottom of the workbench 1, the fixed disks 12 are rotatably installed with rotating rods 11 inside, the adjacent rotating rods 11 are connected with each other through a plug-in structure, the end portions of the adjacent rotating rods 11 are fixed with second limit blocks 18, the two ends of the rotating shaft of the second cutting tool 9 are fixed with first limit blocks 10, the first limit blocks 10 are matched with the second limit blocks 18, the side wall of the workbench 1 is fixed with a motor 22 through screws, and the output shaft of the motor 22 is fixedly connected with one of the rotating rods 11; when the device works, the fixed disc 12 can rotatably mount the rotating rods 11, so that the rotating rods 11 are mounted at the bottom of the workbench 1, the output shaft of the motor 22 drives the rotating rods 11 to rotate, the adjacent rotating rods 11 are connected with each other through the splicing structure to synchronously rotate, the second cutting tool 9 is extruded through the splicing structure after being overturned and fixed, and simultaneously the first limiting block 10 is butted against the second limiting block 18 after passing through, so that the second limiting block 18 is driven to rotate after the rotating rods 11 are rotated, the second limiting block 18 drives the first limiting block 10 to rotate, the first limiting block 10 drives the second cutting tool 9 to rotate for cutting, so that the device can be connected with the rotating rods 11 through the splicing structure to drive the rotating rods 11 to rotate when the second cutting tool 9 is not overturned and fixed, and drive the second cutting tool 9 to rotate after being overturned and fixed, and simultaneously drive the adjacent rotating rods 11 to rotate through the connection of the second cutting tool 9, thereby make motor 22 can drive whole dwang 11 and rotate to can drive second cutting tool 9 and rotate after second cutting tool 9 overturns fixedly, thereby be favorable to adjusting the cutting of device.

As an embodiment of the present invention, the inserting structure includes two first springs 13, the two first springs 13 are respectively rotatably sleeved on outer rings of two adjacent rotating rods 11, the other ends of the two first springs 13 are respectively rotatably abutted against adjacent fixed disks 12, opposite sides of the two first springs 13 are respectively fixed with a first inserting barrel 14 and a second inserting barrel 15, side walls of the first inserting barrel 14 and the second inserting barrel 15 are respectively symmetrically provided with two inserting grooves 17, inserting blocks 16 are respectively slidably inserted inside the two groups of inserting grooves 17, the two groups of inserting blocks 16 are respectively fixedly connected with the two adjacent rotating rods 11, the first inserting barrel 14 and the second inserting barrel 15 are mutually inserted, and bottoms of the first inserting barrel 14 and the second inserting barrel 15 are both provided with arc surfaces 19; when the connecting frame 8 is not turned and fixed, the first inserting cylinder 14 and the second inserting cylinder 15 are inserted into each other, the rotating rod 11 rotates to drive the inserting block 16 to rotate, the inserting block 16 is inserted into the inserting groove 17 to drive the first inserting cylinder 14 to rotate, the first inserting cylinder 14 drives the second inserting cylinder 15 to rotate, so that the adjacent rotating rod 11 is driven to rotate by the inserting groove 17 and the inserting block 16 on the side wall of the second inserting cylinder 15, during the turning process of the connecting frame 8, the second cutting tool 9 extrudes the arc-shaped surfaces 19 at the edges of the first inserting cylinder 14 and the second inserting cylinder 15, so as to push the first inserting cylinder 14 and the second inserting cylinder 15 to be away from each other, after the connecting frame 8 is turned and put down, the first spring 13 pushes the first inserting cylinder 14 and the second inserting cylinder 15 to move relative to recover the inserting, and the device can drive all the rotating rods 11 to rotate when the second cutting tool 9 is fixed and moved away, therefore, the device can adjust the second cutting tool 9 to cut at any corresponding position, and the cutting adjustability of the device is improved.

As an embodiment of the present invention, a support pad is installed at the bottom of the connecting frame 8; during operation, after 8 upsets of link put down, the supporting pad can support link 8 for the bottom surface of placing that link 8 can be stable, thereby is favorable to improving the stability of device.

As an embodiment of the present invention, the rotating roller 3 is an elastic rubber rotating roller; during operation, the live-rollers 3 self of elastic rubber material can produce deformation to when making the coil of strip piece of different thickness pass through live-rollers 3 bottoms, live-rollers 3 can provide the space of stepping down through the elasticity of self when producing the extrusion conveying to the coil of strip, thereby makes the device can cut the coil of strip of different thickness, thereby is favorable to improving the suitability of device.

The working principle of the utility model is as follows: the technical scheme can solve the problems that in the process of cutting a steel coil by a conventional cutting device with a specific size, because a cutter can only horizontally move, the steel coil only can be subjected to width cutting adjustment and cannot be used for cutting the width of a steel plate after the steel coil is uncoiled, and meanwhile, the width of the steel coil inevitably can be cut when the steel coil passes through the device, so that the cutting of the device cannot be adjusted according to needs, the specific implementation mode is as follows, a workbench 1 can support the whole device, an uncoiling support 2 can sleeve the steel coil to support and uncoil the steel coil, a rotating roller 3 can press the uncoiled steel coil down to ensure that the surface of the steel coil laminating workbench 1 is uncoiled, the cutting device can transversely cut the steel coil, so as to adjust the length of the steel plate after the steel coil is cut, and a connecting frame 8 can be supported by a cutter 7, the connecting frame 8 can mount the second cutting tool 9, and the second cutting tool 9 is driven to move and adjust by the turnover of the connecting frame 8, the second cutting tool 9 can penetrate through the opening 27 to cut the steel coil so as to adjust the width of the steel coil, the limiting device can fix the connecting frame 8 after the turnover, so that the connecting frame 8 drives the second cutting tool 9 through the opening 27, the rotation driving device can drive the second cutting tool 9 to rotate when the connecting frame 8 is fixed by the limiting device, so that the device can turn the connecting frame 8 over when it is required to cut the steel coil so that the second cutting tool 9 performs a rotary cutting through the opening 27, the second cutting tool 9 can be put down when the steel coil does not need to be cut, so that the steel coil smoothly passes through without being cut, thereby being favorable to improving the adjustability of the device during cutting and being favorable to controlling the size of the steel coil cutting.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a cutting device for coil of strip, includes workstation (1), its characterized in that, the one end at workstation (1) top is fixed with unreels support (2), the middle part at workstation (1) top is rotated and is connected with live-rollers (3), the other end fixed mounting at workstation (1) top has cutting device, the bottom of workstation (1) is fixed with straight-bar (7), the outer lane of straight-bar (7) is rotated the cover and is equipped with link (8), the other end of link (8) is rotated and is installed second cutting tool (9), the top of workstation (1) run through set up a plurality of with the corresponding opening (27) of second cutting tool (9), the tip of link (8) with install stop device between workstation (1), rotation drive arrangement is installed to the bottom of workstation (1), and the rotation driving device drives the second cutting tool (9) to rotate after the second cutting tool is turned upwards.

2. The cutting device for steel coils according to claim 1, characterized in that, the cutting device comprises a bracket (4), the bracket (4) is fixed on the top of the worktable (1), a cylinder (5) is fixed on the top of the bracket (4), and the output end of the cylinder (5) penetrates through the bracket (4) and extends out to be fixed with a first cutting tool (6).

3. The cutting device for the steel coil according to claim 1, wherein the limiting device comprises a third limiting block (20) and a plurality of fixing blocks (21), all the fixing blocks (21) are fixed at the bottom of the workbench (1) and correspond to the connecting frame (8), a limiting groove (23) is formed in the fixing block (21), a fourth limiting block (24) is movably inserted in the limiting groove (23), the third limiting block (20) is fixed at the end of the connecting frame (8), round corners are formed on the opposite sides of the third limiting block (20) and the fourth limiting block (24), the other end of the fourth limiting block (24) penetrates through the fixing block (21) and extends out to be fixed with a convex block (25), and a second spring (26) is fixed between the convex block (25) and the fixing block (21), the second spring (26) is sleeved on the outer ring of the fourth limiting block (24).

4. The cutting device for steel coils according to claim 1, characterized in that said rotary driving means comprise a plurality of fixed disks (12), all of said fixed disks (12) being fixed to the bottom of said worktable (1), the fixed disc (12) is internally and rotatably provided with rotating rods (11), the adjacent rotating rods (11) are connected with each other through a splicing structure, the end parts of the adjacent rotating rods (11) are respectively and fixedly provided with a second limiting block (18), a first limiting block (10) is fixed at both ends of a rotating shaft of the second cutting tool (9), the first limiting block (10) is matched with the second limiting block (18), the lateral wall of workstation (1) is fixed with motor (22) through the screw, the output shaft and one of them of motor (22) dwang (11) fixed connection.

5. The cutting device for the steel coil according to claim 4, wherein the inserting structure comprises two first springs (13), the two first springs (13) are respectively rotatably sleeved on outer rings of two adjacent rotating rods (11), the other ends of the two first springs (13) are respectively rotatably abutted against the adjacent fixed plate (12), opposite sides of the two first springs (13) are respectively fixed with a first inserting tube (14) and a second inserting tube (15), side walls of the first inserting tube (14) and the second inserting tube (15) are respectively symmetrically provided with two inserting grooves (17), two inserting blocks (16) are respectively slidably inserted in the two inserting grooves (17), the two inserting blocks (16) are respectively fixedly connected with the two adjacent rotating rods (11), the first inserting tube (14) and the second inserting tube (15) are mutually inserted, the bottoms of the first inserting cylinder (14) and the second inserting cylinder (15) are provided with arc-shaped surfaces (19).

6. The cutting device for steel coils as claimed in claim 1, characterized in that the bottom of the connecting frame (8) is fitted with a support pad.

7. A cutting device for steel coils, according to claim 1, characterized in that said rotating rollers (3) are elastic rubber rotating rollers.

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