CN211387213U

CN211387213U - Metal material strap cutting equipment with crease-resistance function

Info

Publication number: CN211387213U
Application number: CN201922455334.9U
Authority: CN
Inventors: 史宏林; 张国冲; 姜连帅
Original assignee: Ludetong Electronic Equipment Beijing Co ltd
Current assignee: Ludetong Electronic Equipment Beijing Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-01
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a metal material belt cutting equipment with crease-resistance function, which comprises a cutting assembly, wherein the cutting assembly comprises a support frame, a support roller rotatably supported on the support frame, a cutting roller rotatably supported on the support frame and arranged in parallel with the support roller, and a driving motor arranged on the support frame for driving the cutting roller to rotate; the cutting roller comprises an installation roller and a cutter arranged around the side surface of the installation roller; the metal material belt cutting equipment further comprises an installation frame arranged on one side of the cutting assembly, a bearing roller rotatably supported on the installation frame, and a pressing roller rotatably supported on the installation frame and arranged in parallel with the bearing roller; there is less clearance between compression roller and the bearing roller, and the clearance size is with the thickness adaptation in metal material area. The utility model discloses a set up its structure, can flatten the fold on the metal material area, reduce the phenomenon that the fold appears on the metal material area, reduce the influence to the quality of product.

Description

Metal material strap cutting equipment with crease-resistance function

Technical Field

The utility model belongs to the technical field of metal processing's technique and specifically relates to a metal material area cutting equipment with crease-resistance function is related to.

Background

At present, domestic and foreign rotary die cutting technology is more and more extensive in application field, and the material of use is more comprehensive, like protection film, copper foil and aluminium foil etc. when using rotary die cutting technology to add man-hour to metal material, the cutter is processed the metal material area, processes into specific shape with it and is used for later production process, and metal material area cutting equipment is exactly one kind and carries out rotary die cutting's equipment to the metal material area.

Referring to fig. 1, the conventional metal material tape cutting apparatus includes a cutting assembly 1, where the cutting assembly 1 includes a supporting frame 11, a supporting roller 12 horizontally disposed and rotatably supported on the supporting frame, a cutting roller 13 horizontally rotatably supported on the supporting frame, and a driving motor 14 disposed on the supporting frame 11 for driving the cutting roller 13 to rotate; there is a small gap between cutting roller 13 and support roller 12, and cutting roller 13 includes a mounting roller 131 and a cutter 132 disposed around cutting roller 131.

When cutting the metal material area, the metal material area from cutting roller 13 and with the backing roll 12 between pass, pull through subsequent draw gear, drive the metal material area and remove, rotate through cutting roller 13 and cut the metal material area, process into specific shape with it, however, the position department of joint-cutting on the metal material area, the phenomenon of fold appears in the metal material area easily, can influence the holistic quality in the material area after the cutting, produce the influence to the quality of the product of production.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a metal material area cutting equipment with crease-resistance function, through setting up its structure, can flatten the fold on the metal material area, reduce the phenomenon that the fold appears on the metal material area, reduce the influence to the quality of product.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a metal material belt cutting device with a crease-resistant function comprises a cutting assembly, wherein the cutting assembly comprises a support frame, a supporting roller, a cutting roller and a driving motor, the supporting roller is rotatably supported on the support frame, the cutting roller is rotatably supported on the support frame and is arranged in parallel with the supporting roller, and the driving motor is arranged on the support frame and is used for driving the cutting roller to rotate; the cutting roller comprises an installation roller and a cutter arranged around the side surface of the installation roller; the metal material belt cutting equipment further comprises an installation frame arranged on one side of the cutting assembly, a bearing roller rotatably supported on the installation frame, and a pressing roller rotatably supported on the installation frame and arranged in parallel with the bearing roller; there is less clearance between compression roller and the bearing roller, and the clearance size is with the thickness adaptation in metal material area.

By adopting the technical scheme, when the metal material belt is processed, the metal material belt passes through the space between the cutting roller and the supporting roller, then passes through the space between the pressing roller and the supporting roller, then the end part of the metal material belt is connected with a subsequent traction device, the metal material belt is pulled to move forwards through the traction device, the cutter rotates to cut the metal material belt, the metal material belt passing through the cutting assembly has a wrinkle phenomenon at the position of a cutting joint, the metal material belt is pressed through the cooperation of the subsequent pressing roller and the subsequent supporting roller, the wrinkle on the metal material belt is flattened, the metal material belt which is cut can be conveniently flattened, the surface of the metal material belt which is cut through cutting is kept flat, the subsequent secondary processing is not needed, the operation is more convenient, the manpower is saved, and more time is saved, the production efficiency is improved.

The present invention may be further configured in a preferred embodiment as: the pressing roller is connected with the mounting frame in a sliding manner and slides in the vertical direction along the mounting frame; be provided with spacing subassembly on the mounting bracket, adjust and injectd the position of pinch roller through spacing subassembly.

Through adopting above-mentioned technical scheme, can cross the clearance between compressing roller and the bearing roller and adjust, pass compressing roller and bearing roller with the metal material area between, enlarge its clearance, can be comparatively convenient penetrate it, through adjusting its clearance, can with the metal material area adaptation of different thickness, process the metal material area of multiple different models.

The present invention may be further configured in a preferred embodiment as: the mounting frame comprises a bottom plate, two mounting blocks vertically arranged on two sides of the bottom plate and sliding columns vertically arranged on two sides of the upper side surface of each mounting opening; the cross section of each sliding column is U-shaped, and the openings of the two corresponding sliding columns on one mounting block are arranged oppositely; the mounting frame is provided with two sliding blocks, and the two sliding blocks are respectively arranged in the openings of the two corresponding sliding columns; two ends of the compression roller are rotatably supported on the two sliding blocks; the limiting assembly is arranged on the sliding block and used for adjusting and limiting the position of the sliding block.

Through adopting above-mentioned technical scheme, injecing gliding slip, can guaranteeing the stability that the pinch roller reciprocated the process, reduce the phenomenon that the dislocation was rocked at the in-process that removes to the pinch roller appears.

The present invention may be further configured in a preferred embodiment as: the limiting assembly comprises a screw and a limiting block; a transverse plate is arranged on the side surface of the mounting block; the two screw rods are vertically and rotatably supported on the transverse plate respectively; the two limiting blocks are respectively arranged on the two sliding blocks; the two screws respectively penetrate through the corresponding limiting blocks and are in threaded fit with the limiting blocks.

Through adopting above-mentioned technical scheme, rotate the screw rod and can drive two stopper lower vertical direction upwards slideings, drive the slider and slide on vertical direction, adjust and inject the position of clamping roller, when the position of clamping roller is adjusted as far as possible, the operation is more convenient, can be comparatively convenient realization to the fixed of the position of clamping roller.

The present invention may be further configured in a preferred embodiment as: the upper part of the screw rod is provided with a polished rod, the height of the part provided with the thread is the same as that of the sliding column, and the height of the polished rod part is larger than the thickness of the limiting block.

Through adopting above-mentioned technical scheme, rotate two screw rods and drive two stoppers and upwards slide, drive the compression roller upward movement promptly, the stopper removes the upside of seting up the screw thread part on the screw rod, and the stopper is located smooth rod part, and at this moment, the slider is located the upside of sliding post, can directly pull down the stopper from the upper end of screw rod, can be comparatively convenient change the compression roller.

The present invention may be further configured in a preferred embodiment as: the sliding block comprises an upper half block, a lower half block and a fastening bolt; a semicircular groove is formed in the lower side surface of the upper half block; the upper side surface of the lower half block is also provided with a semicircular groove, and the two semicircular grooves are matched to form a circular hole; the end parts of the pressing rollers are positioned in the two semicircular grooves; the fastening bolts are arranged in a plurality of ways, penetrate between the upper half block and the lower half block and are in threaded connection with the upper half block and the lower half block.

Through adopting above-mentioned technical scheme, dismantle the pinch roller from the mounting bracket after, through unscrewing fastening bolt, with first half with second half separation, can be comparatively convenient pull down the pinch roller from semicircular groove, install new pinch roller in the slider, fix first half and second half through fastening bolt, can be comparatively convenient dismantle and install the pinch roller, need not change slider and stopper, it is comparatively convenient and save the resource to operate.

The present invention may be further configured in a preferred embodiment as: the semicircular grooves are respectively provided with a limiting groove, and the radian of the limiting groove is the same as that of the semicircular groove; the end parts of the pressing rollers are respectively provided with a bearing, the inner rings of the bearings are in interference fit with the pressing rollers, the width of the inner rings of the bearings is matched with that of the limiting grooves, the bearings are embedded in the two limiting grooves, and the bearings are clamped by the upper half block and the lower half block in a matching mode.

Through adopting above-mentioned technical scheme, can guarantee the smoothness nature of compression roller rotation process, inject the position of compression roller through the spacing groove, at its pivoted in-process, can reduce the phenomenon that the dislocation appears on the mounting bracket in the compression roller for its installation is more stable.

The present invention may be further configured in a preferred embodiment as: an accommodating groove is formed in the upper end face of the screw, a rotating rod is arranged in the accommodating groove, and the diameter of the rotating rod is the same as that of the accommodating groove; the upper end surface of the screw is provided with a communicating groove which is communicated with the accommodating groove and the outer side surface of the screw; a rotating shaft is horizontally arranged in the accommodating groove, the rotating shaft is rotationally connected with the screw rod, and the lower end of the rotating rod is arranged on the rotating shaft; two sliding grooves are vertically arranged in two opposite directions on the side wall of the accommodating groove, and two ends of the rotating shaft are embedded in the two sliding grooves and are in sliding connection with the screw; the upper side of the sliding groove is positioned below the upper end surface of the screw and is higher than the lower side of the communicating groove; the rotating rod can be embedded in the communicating groove through rotation.

Through adopting above-mentioned technical scheme, when the position of rotating the screw rod to the compression roller is adjusted, rotate the dwang to horizontal position, it stretches out from the intercommunication groove, can comparatively convenient rotation screw rod through the dwang, when making the stopper rise to the part at polished rod place through rotating the screw rod, rotatory dwang to vertical position, with the dwang lapse, make the dwang imbed in the holding tank, make the dwang can not appear rotating under the condition that vertical state is in, later take down the stopper from the screw rod, reduce the influence of dwang to the stopper, it is comparatively convenient to operate.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the metal material belt cutting machine has the advantages that the phenomenon of wrinkles existing on the metal material belt can be reduced by flattening the cut metal material belt, so that the cut metal material belt is smoother, the influence on the quality of a produced product is reduced, the operation is more convenient when the metal material belt passes through the pressing roller and the bearing roller by adjusting the position of the extruding roller, and meanwhile, the metal material belt cutting machine can adapt to metal material belts with different thicknesses and process various metal material belts with different thicknesses;

2. after the installation frame is used for a long time, the pressing roller can be conveniently detached from the installation frame, the structure of the sliding block is erected, the pressing roller can be conveniently detached from the sliding block, and the operation of replacing the pressing roller is convenient;

3. through setting up the structure to the dwang, when rotating the screw rod, rotate the dwang to the level and change the state, rotate the more laborsaving of operation to the screw rod, when taking off the stopper from the screw rod, rotate the dwang to vertical state to with its lapse, make its lower extreme and the tank bottom contact of holding tank, inject the dwang, can reduce the influence that the dwang took off the process to the stopper.

Drawings

Fig. 1 is a schematic view of a conventional metal strip cutting apparatus;

fig. 2 is a schematic diagram of a metal strip cutting device in the embodiment;

FIG. 3 is a schematic view of the mounting bracket to show its construction;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

fig. 5 is a schematic view for showing the mounting structure of the rotating lever.

In the drawings, 1, a cutting assembly; 11. a support frame; 12. a support roller; 13. a cutting roller; 131. mounting a roller; 132. a cutter; 14. a drive motor; 2. a mounting frame; 21. a base plate; 22. mounting blocks; 221. a transverse plate; 23. sliding the column; 24. a slider; 241. the upper half block; 242. a lower half block; 243. fastening a bolt; 244. a semicircular groove; 245. a limiting groove; 3. a carrying roller; 4. a pressure roller; 41. a bearing; 5. a limiting component; 51. a screw; 511. accommodating grooves; 512. a communicating groove; 513. a sliding groove; 52. a limiting block; 6. rotating the rod; 61. a rotating shaft.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, the metal material belt cutting equipment with the anti-wrinkling function disclosed by the utility model comprises a cutting component 1, a mounting frame 2, a bearing roller 3 and a pressing roller 4; the cutting assembly 1 comprises a support frame 11, a support roller 12, a cutting roller 13 and a driving motor 14; the support frame 11 is arranged on the ground; the supporting roller 12 is horizontally arranged and rotatably supported on the supporting frame 11; the cutting roller 13 is horizontally arranged on the support frame 11, rotatably supported on the support frame 11 and positioned at the upper side of the support roller 12; the driving motor 14 is arranged on the support frame 11, and the output end of the driving motor is connected with the cutting roller 13 and used for driving the cutting roller 13 to rotate; a plurality of groups of cutters 132 are arranged on the cutting roller 13, and the cutters 132 are arranged on the side surface of the cutting roller 13 and surround the cutting roller 13 for one circle; the mounting frame 2 is arranged on one side of the cutting assembly 1; the bearing roller 3 is horizontally arranged, is rotatably supported on the mounting frame 2, and is positioned on the same horizontal plane with the supporting roller 12; the pressing roller 4 is horizontally arranged on the upper side of the bearing roller 3 and is rotatably supported on the mounting frame 2, a certain gap exists between the pressing roller 4 and the bearing roller 3, and the size of the gap is matched with the thickness of the metal material belt; the metal material belt passes through between cutting roller 13 and backing roll 12, later passes through between pinch roller 4 and the bearing roller 3, pulls through subsequent draw gear, and pinch roller 4 presss from both sides tightly the material belt with the cooperation of bearing roller 3.

When adding man-hour to the metal material area, pass the metal material area from between cutting roller 13 and the backing roll 12, later pass it in the clearance in the middle of from pinch roller 4 and bearing roller 3, later be connected its tip and subsequent draw gear, move forward through draw gear pulling metal material area, cutter 132 is rotatory to carry out cutting process to the metal material area, there is the phenomenon of fold in the position department of its lancing in the metal material area through cutting assembly 1, compress tightly the metal material area through subsequent pinch roller 4 and the cooperation of bearing roller 3, flatten the fold on the metal material area.

Through carrying out above setting, can be comparatively convenient flatten the metal material area through cutting process for the surface in the metal material area that cuts through the cutting keeps leveling, does not need follow-up to process it once more, and the operation is more convenient, has saved the manpower and the more time of saving, the production efficiency of improvement.

Referring to fig. 2 and 3, the mounting bracket 2 includes a bottom plate 21, a mounting block 22 and a sliding column 23; the bottom plate 21 is horizontally arranged; two mounting blocks 22 are vertically arranged at two ends of the bottom plate 21 respectively; four sliding columns 23 are vertically fixed on two opposite sides of the upper side surfaces of the two mounting blocks 22 respectively; the cross section of the sliding column 23 is U-shaped, and the openings of the two corresponding sliding columns 23 on each mounting block 22 are oppositely arranged; the carrier roller 3 is rotatably supported on the two mounting blocks 22; two sliding blocks 24 are arranged on the mounting frame 2, the two sliding blocks 24 are respectively arranged in the openings of the corresponding sliding columns 23, and the sliding blocks are in sliding connection with the sliding columns 23; two ends of the compression roller 4 are rotatably supported on the two sliding blocks 24, the compression roller 4 can slide in the vertical direction through the matching of the sliding blocks 24 and the sliding columns 23, and the distance between the compression roller 4 and the bearing roller 3 is adjusted; the utility model discloses still be provided with spacing subassembly 5 for adjust and injecing the position of slider 24.

When carrying out the level of the pressure to the metal material area through the cutting, adjust the interval between pinch roller 4 and the bearing roller 3 through sliding block 24, enlarge its interval, later pass the metal material area between pinch roller 4 and the bearing roller 3, adjust pinch roller 4 downstream, press from both sides tight to the metal material area, it removes to drive the metal material area through draw gear, the cutting and the wrinkle removal of complete metal material area, through carrying out above setting, can be simpler adjust the interval between pinch roller 4 and the bearing roller 3, it is comparatively convenient when passing the material area from pinch roller 4 and bearing roller 3, in addition can make with different thickness metal material area adaptations, the material area to different thickness flattens and removes the wrinkle, adaptability is better.

Referring to fig. 3, the mounting blocks 22 are respectively horizontally provided with a horizontal plate 221, and the two horizontal plates 221 are located on the side surfaces of the two mounting blocks 22 facing away from each other; the limiting assembly 5 comprises a screw 51 and a limiting block 52; two screw rods 51 are respectively vertically and rotatably supported on the two transverse plates 221; the two limit blocks 52 are respectively fixed on the side surfaces of the two sliders 24 facing the outer side of the mounting frame 2, the two screws 51 penetrate through the corresponding limit blocks 52, and the limit blocks 52 are in threaded fit with the screws 51.

The two limiting blocks 52 can be driven to slide in the vertical direction by rotating the screw 51, the sliding block 24 is driven to slide in the vertical direction, the position of the clamping roller is adjusted and limited, when the position of the clamping roller is adjusted as much as possible, the operation is more convenient, and the position of the clamping roller can be fixed conveniently.

Referring to fig. 2 and 3, the upper portion of the screw 51 is a polished rod, the height of the threaded portion is the same as the height of the sliding column 23, and the height of the polished rod at the upper end is greater than the thickness of the limiting block 52.

After the use through a period of time, the fold on pinch roller 4 and the metal material area is worn and torn for a long time, can have sunkenly on the pinch roller 4, need change it, in order to guarantee the better effect of flattening of fold on the material area, drive two stopper 52 upslidings through rotating two screw rods 51, drive pinch roller 4 upward movement promptly, stopper 52 removes the upside of seting up threaded portion on the screw rod 51, stopper 52 is located smooth rod portion, at this moment, slider 24 is located the upside that slides post 23, can directly pull down stopper 52 from screw rod 51's upper end, can be comparatively convenient change pinch roller 4.

Referring to fig. 3, the slider 24 includes an upper half 241, a lower half 242, and a fastening bolt 243; the limiting block 52 is fixedly connected with the lower half block 242; a semicircular groove 244 is formed on the lower side surface of the upper half block 241; a semicircular groove 244 is also formed in the upper side surface of the lower half block 242, the two semicircular grooves 244 are matched to form a circular hole, and the end part of the pressing roller 4 is positioned in the two semicircular grooves 244 and used for installing and fixing the pressing roller 4; two fastening bolts 243 penetrate through the upper half block 241 and the lower half block 242, and are in threaded connection with the upper half block 241 and the lower half block 242.

Through setting up above, after dismantling compressing roller 4 from mounting bracket 2, through unscrewing fastening bolt 243, with first 241 and second 242 separation, can be comparatively convenient pull down compressing roller 4 from semicircular groove 244, install new compressing roller 4 in slider 24, fix first 241 and second 242 through fastening bolt 243, can be comparatively convenient dismantle and install compressing roller 4, need not change slider 24 and stopper 52, it is comparatively convenient and save resources to operate.

Referring to fig. 3, two semicircular grooves 244 are respectively provided with a limiting groove 245, and the radian of the limiting groove 245 is the same as that of the semicircular groove 244; the end parts of the pressure roller 4 are respectively provided with a bearing 41, the inner ring of the bearing 41 is in interference fit with the pressure roller 4, the width of the bearing 41 is the same as that of the limiting grooves 245, the bearing 41 is embedded in the two limiting grooves 245, and the upper half block 241 and the lower half block 242 are matched to clamp the bearing 41.

Through carrying out above setting, can guarantee the smoothness nature of compressing roller 4 rotation process, inject the position of compressing roller 4 through spacing groove 245, at its pivoted in-process, can reduce the phenomenon that the dislocation appears on mounting bracket 2 in compressing roller 4 for its installation is more stable.

Referring to fig. 3, 4 and 5, a rotating rod 6 is arranged on the upper end surface of the screw 51; the upper end surface of the screw 51 is provided with an accommodating groove 511; a communicating groove 512 is arranged on the side surface of the screw 51, the communicating groove 512 is communicated with the interior of the accommodating groove 511, and the communicating groove 512 is communicated with the upper end surface of the screw 51; the lower end of the rotating rod 6 is provided with a rotating shaft 61, and the rotating shaft 61 is rotatably connected with the screw 51; two opposite sides of the side wall of the accommodating groove 511 are vertically provided with two sliding grooves 513, two ends of the rotating shaft 61 are embedded in the sliding grooves 513 on the two sides and can slide in the vertical direction, the bottom end of the sliding groove 513 is positioned at the bottom position of the groove, and the upper end of the sliding groove is slightly higher than the lower side surface of the communicating groove 512; the diameter of the rotating rod 6 is the same as the inner diameter of the groove, and the rotating rod 6 can be inserted into the accommodating groove 511 when rotating to a vertical state; the width of the communicating groove 512 is the same as the diameter of the rotating lever 6, and the rotating lever 6 is rotatably fitted in the communicating groove 512 with its end portion projecting to the outside of the screw 51.

When rotating screw 51 and adjusting the position of compression roller 4, rotate dwang 6 to horizontal position, it stretches out from intercommunication groove 512, rotation screw 51 that can be comparatively convenient through dwang 6, make stopper 52 rise to the part at polished rod place through rotating screw 51, rotatory dwang 6 to vertical position, slide dwang 6 downwards, make dwang 6 imbed in holding tank 511, make dwang 6 be in can not appear rotating under the condition of vertical state, later take stopper 52 off from screw 51, reduce the influence of dwang 6 to stopper 52, it is comparatively convenient to operate.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A metal material belt cutting device with a crease-resistant function comprises a cutting assembly (1), wherein the cutting assembly comprises a support frame (11), a support roller (12) rotatably supported on the support frame (11), a cutting roller (13) rotatably supported on the support frame (11) and arranged in parallel with the support roller (12), and a driving motor (14) arranged on the support frame (11) and used for driving the cutting roller (13) to rotate; the cutting roller (13) comprises a mounting roller (131) and a cutter (132) arranged around the side surface of the mounting roller (131); the method is characterized in that: the metal material belt cutting equipment further comprises an installation frame (2) arranged on one side of the cutting assembly (1), a bearing roller (3) rotatably supported on the installation frame (2), and a pressing roller (4) rotatably supported on the installation frame (2) and arranged in parallel with the bearing roller (3); a small gap exists between the pressing roller (4) and the bearing roller (3), and the size of the gap is matched with the thickness of the metal material belt.

2. The metal material belt cutting device with the crease-resistant function as claimed in claim 1, wherein: the pressing roller (4) is in sliding connection with the mounting rack (2) and slides along the mounting rack (2) in the vertical direction; be provided with spacing subassembly (5) on mounting bracket (2), adjust and prescribe a limit to the position of pinch roller (4) through spacing subassembly (5).

3. The metal material belt cutting device with the crease-resistant function as claimed in claim 2, wherein: the mounting rack (2) comprises a bottom plate (21), two mounting blocks (22) vertically arranged on two sides of the bottom plate (21) and sliding columns (23) vertically arranged on two sides of the upper side surface of each mounting opening; the cross section of each sliding column (23) is U-shaped, and the openings of the two corresponding sliding columns (23) on one mounting block (22) are arranged oppositely; the mounting rack (2) is provided with two sliding blocks (24), and the two sliding blocks (24) are respectively arranged in the openings of the two corresponding sliding columns (23); two ends of the compression roller (4) are rotatably supported on the two sliding blocks (24); the limiting assembly (5) is arranged on the sliding block (24) and used for adjusting and limiting the position of the sliding block (24).

4. The metal strip cutting device with the crease-resist function as claimed in claim 3, wherein: the limiting assembly (5) comprises a screw rod (51) and a limiting block (52); a transverse plate (221) is arranged on the side surface of the mounting block (22); two screw rods (51) are respectively vertically and rotatably supported on the transverse plate (221); the two limiting blocks (52) are respectively arranged on the two sliding blocks (24); the two screws (51) respectively penetrate through the corresponding limiting blocks (52), and are in threaded fit with the limiting blocks (52).

5. The metal material belt cutting device with the crease-resistant function as claimed in claim 4, wherein: the upper part of the screw rod (51) is set to be a polished rod, the height of the part provided with the thread is the same as that of the sliding column (23), and the height of the polished rod part is larger than the thickness of the limiting block (52).

6. The metal material belt cutting device with the crease-resistant function as claimed in claim 5, wherein: the sliding block (24) comprises an upper half block (241), a lower half block (242) and a fastening bolt (243); a semicircular groove (244) is arranged on the lower side surface of the upper half block (241); the upper side surface of the lower half block (242) is also provided with a semicircular groove (244), and the two semicircular grooves (244) are matched to form a circular hole; the ends of the pressure roller (4) are positioned in two semicircular grooves (244); the fastening bolts (243) are arranged between the upper half block (241) and the lower half block (242) in a penetrating mode and are in threaded connection with the upper half block (241) and the lower half block (242).

7. The metal material belt cutting device with the crease-resistant function as claimed in claim 6, wherein: the semicircular grooves (244) are respectively provided with a limiting groove (245), and the radian of the limiting groove (245) is the same as that of the semicircular groove (244); the end part of the pressing roller (4) is respectively provided with a bearing (41), the inner ring of the bearing (41) is in interference fit with the pressing roller (4), the width of the bearing is matched with the width of the limiting groove (245), the bearing (41) is embedded in the two limiting grooves (245), and the upper half block (241) and the lower half block (242) are matched to clamp the bearing (41).

8. The metal material belt cutting device with the crease-resistant function as claimed in claim 5, wherein: an accommodating groove (511) is formed in the upper end face of the screw rod (51), a rotating rod (6) is arranged in the accommodating groove (511), and the diameter of the rotating rod (6) is the same as that of the accommodating groove (511); a communicating groove (512) is formed in the upper end face of the screw (51), and the communicating groove (512) is communicated with the accommodating groove (511) and the outer side face of the screw (51); a rotating shaft (61) is arranged at the lower end of the rotating rod (6), and the rotating shaft (61) is in rotating connection with the screw rod (51); two sliding grooves (513) are vertically arranged in two opposite directions on the side wall of the accommodating groove (511), and two ends of the rotating shaft (61) are embedded in the two sliding grooves (513) and are in sliding connection with the screw rod (51); the upper side of the sliding groove (513) is positioned below the upper end surface of the screw (51) and is higher than the lower side of the communication groove (512); the rotating rod (6) can be embedded in the communicating groove (512) through rotation.