CN210256417U

CN210256417U - Shears and shear assembly line

Info

Publication number: CN210256417U
Application number: CN201920618013.3U
Authority: CN
Inventors: 张志勤
Original assignee: Kingboard Laminates Shenzhen Ltd
Current assignee: Kingboard Laminates Shenzhen Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-04-07
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a cutter and shear assembly line, this cutter includes: a frame; the cutter is arranged on the frame; the first roller is arranged on the frame and can be connected with the first driving device so as to rotate relative to the frame under the driving of the first driving device; the second roller is arranged on the rack, is parallel to the first roller and is used for being matched with the first roller to clamp the prepreg, so that the prepreg can be driven to move to the cutter when the first roller rotates, and the prepreg is wound on a roller of the winding device; the cloth storage device is used for applying force to the prepreg between the first roller and the roller so as to increase the length of a movement path of the object to be unreeled between the roller and the first roller when the first roller stops rotating, so that the prepreg between the first roller and the roller is tightened.

Description

Shears and shear assembly line

Technical Field

The utility model relates to a copper-clad plate field especially relates to a cutter and shear assembly line.

Background

The prepreg is one of important materials for producing the copper-clad plate, and the prepreg is made of glass cloth and resin according to a certain production process and then is wound on a roller. The semi-cured sheets need to be cut in the subsequent production, and the semi-cured sheets (defined as semi-cured sheets) wound on the roller need to be unwound and unfolded through the unwinding device. Wherein, the power that the prepreg unreeled and unfolded comes mainly from the cutter: two power rollers of cutter step up the prepreg, can drive the prepreg of rolling on the cylinder and expand (drive the cylinder and rotate the blowing promptly) when two power rollers rotate, and when the shearing prepreg of cutter, the power roller stall, but the cylinder can continue to rotate because of factors such as inertia and put the blowing this moment, makes the prepreg between cylinder and the power roller relax and hang down and draw down, can bring adverse effect to subsequent shearing, for example lead to the prepreg to scurry and roll up etc..

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a shearing machine and a shearing line for solving the problem of prepreg looseness between an unwinding device and the shearing machine when the prepreg is sheared.

A shear, comprising: a frame; the cutter is arranged on the rack; the first roller is arranged on the frame and can be connected with a first driving device so as to rotate relative to the frame under the driving of the first driving device; the second roller is arranged on the rack, is parallel to the first roller and is used for being matched with the first roller to clamp the object to be cut so that the object to be cut can be driven to move to the cutter when the first roller rotates, and the object to be cut is wound on a roller of a winding device; the cloth storage device is used for applying force to the object to be cut between the first roller and the drum so as to increase the length of a motion path of the object to be cut between the drum and the first roller when the first roller stops rotating, so that the object to be cut between the first roller and the drum is tightened.

Further, the cloth storage device includes: the connecting mechanism is arranged on the rack; the cloth storage roller is arranged on the connecting mechanism so as to be capable of moving up and down relative to the rack; the cloth storage roller is pressed on the object to be sheared between the first roller and the roller, and can drive the object to be sheared to move downwards when the first roller stops rotating so as to tighten the object to be sheared; and can ascend with the object to be sheared when the first roller drives the object to be sheared to move.

Furthermore, the shearing machine also comprises a second driving device, and the second driving device is connected with the cloth storage roller and can drive the cloth storage roller to move up and down.

Furthermore, the second driving device comprises two rodless cylinders, cylinder bodies of the two rodless cylinders are fixed on the rack, and two ends of the cloth storage roller are respectively installed on movable parts of the two rodless cylinders.

Further, the cloth storage roller comprises a third roller and a fourth roller which are arranged in parallel, and the third roller and the fourth roller move up and down relative to the rack; the shearing machine further comprises a fifth roller fixedly arranged on the rack, and the fifth roller is positioned between the third roller and the fourth roller and is arranged in parallel with the third roller.

Further, the shearing machine further comprises a transmission mechanism, wherein the transmission mechanism is respectively connected with the third roller and the fourth roller so as to enable the third roller and the fourth roller to move synchronously.

Further, the cutter still includes the tensioning roller, the tensioning roller is installed in the frame, and with first roller parallel arrangement, the tensioning roller with first roller sets up respectively hold cloth device both sides, be used for to the process hold cloth device wait to cut the thing and provide the holding power.

A shear line, comprising: the coil feeding machine is used for installing a roller for winding the object to be sheared; the shearing machine is used for driving the roller to move so as to unreel the object to be sheared and shearing the unreeled object to be sheared.

Further, the coil feeder comprises a support frame, and the support frame is provided with a mounting position so as to be used for mounting a roller for winding the object to be cut; still be equipped with two on the support frame and rectify the roller, two are rectified the roller and all can be relative the support frame rotates to set up respectively the both ends of cylinder are used for treating when treating that the thing is scurried and is rolled up, treats that the thing of cutting applys the effort opposite with the drunkenness direction, with right treat that the thing is rectified.

Furthermore, the assembly line further comprises a supporting platform and a conveying platform which are arranged from top to bottom, wherein the supporting platform is used for supporting the object to be sheared which is conveyed out of the shearing machine, so that the shearing machine can conveniently shear the object to be sheared; the supporting platform can be opened with an opening so as to enable the cut object to be cut to fall to the conveying platform, and the conveying platform is used for conveying the cut object to be cut to a preset station.

The utility model provides a cutter is provided with holds cloth device, can be when the cutter action (when the first roller of cutter stall promptly), increase the length in prepreg motion route between cylinder and the first roller, thereby this newly-increased route can be used to store the prepreg that the cutter during operation discharged because of factors such as inertia thereby make treating between first roller and the cylinder and cut the thing and tighten, avoid scurrying the appearance of rolling up the scheduling problem because of the prepreg that the prepreg relaxes droops to pull down and lead to prepreg.

Drawings

Fig. 1 is a schematic side view of a shearing line provided by the present invention;

fig. 2 is a top view of the shearing line provided by the present invention;

fig. 3 is a cross-sectional view taken along the line a-a of fig. 2 according to the present invention;

fig. 4 is a schematic transmission diagram of the transmission mechanism provided by the present invention;

fig. 5 is a simple schematic view of the supporting platform provided by the present invention.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the utility model provides a cut assembly line, wherein, use the shearing prepreg 500 to describe this assembly line as the example in this embodiment, of course this assembly line also can be used for cutting other things of waiting to cut, for example, be used for cutting cloth, paper etc..

In this embodiment, the production line mainly includes a reel feeder 100, a shearing machine 200, and a conveyor 300. The roll feeder 100 is used for installing a roller 500 for winding the prepreg 400 (the roller 500 is rotatably installed on the roll feeder 100, and when the prepreg 400 is unwound, the roller 500 rotates); the shearer 200 can clamp one end of the prepreg 400 and pull the prepreg 400 to move so as to unreel, and the shearer 200 is further configured to shear the unreeled prepreg 400 by a predetermined length; the conveyor 300 is used to transport the cut prepreg 400 to a predetermined position.

As shown in fig. 1 and fig. 2, in the present embodiment, the shearing machine 200 mainly includes: the cloth storage device comprises a rack 1, a cutting knife 2, a first roller 3, a second roller 4 and a cloth storage device 5, wherein the cutting knife 2, the first roller 3, the second roller 4 and the cloth storage device 5 are all installed on the rack 1.

As shown in fig. 1, in the present embodiment, the first roller 3 can be connected to a first driving device 6 so as to rotate relative to the frame 1 under the driving of the first driving device 6, wherein the first driving device 6 comprises a motor and a speed reducer connected to the motor.

The second roller 4 is arranged in parallel with the first roller 3 (i.e. the axes of the two rollers are parallel), and the second roller 4 is used for cooperating with the first roller 3 to clamp the prepreg, so that the prepreg 400 can be driven to move forward when the first roller 3 rotates, and the prepreg 400 is conveyed to the cutter 2. In this embodiment, the second roller 4 is rotatably mounted on the frame 1, and when the first roller 3 rotates, the second roller 4 may also rotate, so that the unwinding and conveying of the prepreg 400 is smoother.

In addition, in this embodiment, the shearing machine 200 further includes two lifting cylinders, the cylinders of the two lifting cylinders are both installed on the frame 1, two ends of the second roller 4 are respectively installed on the piston rods of the two lifting cylinders, and the second roller 4 can be driven by the two lifting cylinders to move up and down relative to the first roller 3. When second roller 4 kept away from first roller 3 (lift cylinder drives second roller 4 upward movement promptly, and first roller 3 is kept away from to second roller 4 during), the prepreg is conveniently installed, and when second roller 4 was close to first roller 3, second roller 4 cooperated with first roller 3 in order to press from both sides tight prepreg. Specifically, in this embodiment, the piston rods of the two lifting cylinders are provided with bearing mounting positions, and the two ends of the second roller 4 are provided with bearings matching with the bearing mounting positions.

In the present embodiment, the cloth storage device 5 is closer to the roll feeder 100 than the first roll 3, and the prepreg 400 passes through the cloth storage device 5 and then on the conductive first roll 3. The cloth storage device 5 is used for applying force to the prepreg 400 between the first roller 3 and the drum 500, so that the length of a motion path of the prepreg 400 between the drum 500 and the first roller 3 is increased when the cutter 2 works, and the newly increased path can be used for storing the prepreg 400 discharged when the cutter 2 works due to factors such as inertia and the like, so that a to-be-sheared object between the first roller 3 and the drum 500 is tightened, and the problems that the prepreg 400 is loosened and pulled down to cause the scurry-rolling of the prepreg 400 and the like are avoided.

When the cutter 2 is working, namely the cutter 2 shears the prepreg 400, at this time, the first roller 3 stops rotating, and the roller 500 continues to rotate, so that the prepreg 400 wound on the roller 500 can continue to unwind a length of the prepreg 400. The length of the moving path of the prepreg 400 between the drum 500 and the first roller 3 means the length of the path taken by a certain point of the prepreg 400 moving from the drum 500 to the first roller 3 in a taut state, and the increase of the length of the moving path of the prepreg 400 between the drum 500 and the first roller 3 means the increase of the cloth storage capacity between the drum 500 and the first roller 3.

As shown in fig. 1, in the present embodiment, the cloth storage device 5 includes a connection mechanism 51 and a cloth storage roller 52, the connection mechanism 51 is mounted on the frame 1, the cloth storage roller 52 is mounted on the connection mechanism 51, and the cloth storage roller 52 is movable up and down relative to the frame 1 by the connection mechanism 51. In the present embodiment, the connecting mechanism 51 includes guide rails 511 respectively disposed at both ends of the accumulating roller 52, and a slider 512 slidably mounted on the guide rails, wherein the guide rails 511 are vertically fixed on the frame 1, and both ends of the accumulating roller 52 are respectively fixed on the slider 512.

When the cloth storage roller 52 is pressed on the prepreg 400 between the first roller 3 and the roller 500, the cloth storage roller 52 can drive the prepreg 400 to move downwards under the action of self gravity when the first roller 3 stops rotating, so that the prepreg 400 is tightened; meanwhile, when the first roller 3 moves the prepreg 400, the cloth accumulation roller 52 ascends together with the prepreg 400. That is, contact is maintained between the cloth accumulating roller 52 and the prepreg 400 at all times, so that the prepreg 400 between the cloth accumulating roller 52 and the drum 500 and between the cloth accumulating roller 52 and the first roller 3 are in a taut state. It is understood that, in the present embodiment, the reason why the accumulating roller 52 ascends together with the prepreg 400 is mainly to retain a certain accumulating capability of the accumulating device 5.

As shown in fig. 1 and 2, in the present embodiment, the shearing machine 200 further includes a tension roller 7 rotatably mounted on the frame 1, and the tension roller 7 is disposed in parallel with the first roller 3. Wherein, the tension roller 7 and the first roller 3 are respectively disposed at both sides of the cloth storage device 5 for providing a supporting force to the prepreg 400 passing through the cloth storage device 5.

In this embodiment, the shearing machine 200 further comprises a second driving device, which is connected with the accumulating roller 52 and is used for providing driving force for the accumulating roller 52 so as to drive the accumulating roller 52 to move up and down. Normally, when the prepreg 400 is disposed between the cutter 200 and the roll feeder 100, the cloth storage roller 52 falls to the lowest position of the connecting mechanism 51 by gravity. Before the shearing machine 200 is used, the semi-solidified end needs to be installed between the first roller 3 and the second roller 4 through manual operation, and at this time, the cloth storage roller 52 needs to be driven to ascend by using a second driving device so as to conveniently pass the semi-solidified sheet 400 below the cloth storage roller 52. When the whole production line acts, the second driving device is in an unpowered state. Of course, in other embodiments provided by the present disclosure, the raising and lowering of the accumulating roller 52 may be driven by the second roller.

In this embodiment, the second driving device includes two rodless cylinders, the cylinder bodies of the two rodless cylinders are fixed on the frame 1, and two ends of the cloth storage roller 52 are respectively installed on the movable portions of the two rodless cylinders. The space occupied by the second driving means can be reduced by the rodless cylinder, and at the same time, the cylinder body of the rodless cylinder can be used as the guide rail 511 of the connecting mechanism 51, and the movable portion of the rodless cylinder can be used as the slider 512 of the connecting mechanism 51, so that the structure of the cloth storage device 5 can be made simpler. It can be understood that, in other embodiments provided by the present invention, the number of the rodless cylinders may be one, and of course, the second driving device may also be a motor power device, etc.

As shown in fig. 1 and 2, the cloth accumulating roller 52 includes a third roller 521 and a fourth roller 522 which are arranged in parallel, and both the third roller 521 and the fourth roller 522 can move up and down relative to the frame 1. The shearing machine 200 further comprises a fifth roller 8 fixedly arranged on the frame 1, wherein the fifth roller 8 is positioned between the third roller 521 and the fourth roller 522 and is arranged in parallel with the third roller 521. In use, the fifth roller 8 is fixed in the vertical direction relative to the frame 1, that is, the semi-cured sheet 400 can be stored while the third roller 521 and the fourth roller 522 move downwards, so that the storage amount of the storage device 5 can be increased. It can be understood that, in the utility model provides another embodiment, it can also be including one or more relative frame 1 up-and-down motion's sub-cloth storage roller (third roller 521 and fourth roller 522 just belong to sub-cloth storage roller) to hold cloth roller, when the quantity of these sub-cloth storage rollers is a plurality of, still be equipped with a backing roll between two adjacent sub-cloth storage rollers, the backing roll is fixed for frame 1 in vertical direction supporting roll, fifth roller 8 that can understand just belongs to a backing roll. Each sub-accumulating roller is rotatable relative to the frame 1, and each support roller is also rotatable relative to the frame 1.

As shown in fig. 1, in the present embodiment, the shearing machine 200 further includes a transmission mechanism 9, and the transmission mechanism 9 is respectively connected to the third roller 521 and the fourth roller 522 so as to synchronously move the third roller 521 and the fourth roller 522. Thus, when the rodless cylinder drives the fourth roller 522 to ascend, the rodless cylinder can drive the third roller 521 to ascend simultaneously.

As shown in fig. 4, the transmission mechanism 9 includes: a first chain drive 91, a second chain drive 92, a third chain drive 93, a fourth chain drive 94, a fifth chain drive 95, a first rotational axis 96 and a second rotational axis 97. The first rotating shaft 96 and the second rotating shaft 97 are uniformly arranged in parallel with the third roller 521, and the first rotating shaft 96 and the second rotating shaft 97 are both rotatably arranged on the rack 1;

the first chain transmission mechanism 91, the second chain transmission mechanism 92, the third chain transmission mechanism 93 and the fourth chain transmission mechanism 94 are all vertically arranged, and the chain wheel 98 positioned above the four chain transmission mechanisms is rotatably arranged on the machine frame 1, and the chain wheel 98 positioned below the four chain transmission mechanisms are respectively arranged on two rotating shafts; the fifth chain drive 95 is used to connect a first rotary shaft 96 and a second rotary shaft 97, on which two chain wheels 98 are arranged in each case.

Specifically, the first chain transmission mechanism 91 and the second chain transmission mechanism 92 are respectively disposed at two ends of the fourth roller 522, the chain wheels located at the lower portions of the two chain transmission mechanisms are respectively disposed at two ends of the first rotating shaft 96, in addition, the chain 99 of the first chain transmission mechanism 91 is connected with the fourth roller 522, and when the fourth roller 522 rotates, the first chain transmission mechanism 91 can be driven to rotate. The third chain transmission mechanism 93 and the fourth chain transmission mechanism 94 are respectively arranged at two ends of the third roller 521, the chain wheels 98 positioned below the two chain transmission mechanisms are respectively arranged at two ends of the second rotating shaft 97, and the chains 99 of the two chain transmission mechanisms are respectively connected with two ends of the third roller 521.

The working process of the transmission mechanism is approximately as follows: when the fourth roller 522 moves up and down, the first chain transmission mechanism 91 is driven to rotate, and the first rotating shaft 96 and the second chain transmission mechanism 92 are driven to rotate; when the first rotating shaft 96 rotates, the fifth chain transmission mechanism 95 can drive the second rotating shaft to rotate 97; when the second rotating shaft 97 rotates, the third chain transmission mechanism 93 and the fourth chain transmission mechanism 94 are driven to rotate, and then the third roller 521 is driven to move up and down, so that the third roller 521 and the fourth roller 522 are synchronously moved.

It will be appreciated that in other embodiments provided by the present invention, the five chain drives may be replaced with belt drives or the like.

As shown in fig. 1 and 2, the roll feeder 100 includes a support frame 101, and the support frame 101 is provided with a mounting position for mounting a drum 500 on which the prepreg 400 is wound. Specifically, the supporting frame 101 includes a first bracket 1011 and a second bracket 1012, and the mounting positions include mounting grooves respectively disposed on the two brackets, and the mounting grooves are respectively used for matching with bearings disposed at two ends of the drum 500.

The two supports are also respectively provided with a deviation rectifying roller 102 which can rotate relative to the supports, and the deviation rectifying rollers 102 are respectively positioned at two ends of the roller 500 and used for rectifying deviation of the prepreg 400 when the prepreg is rolled. Specifically, the two deviation rectification rollers 102 are respectively spaced from the drum 500 by a certain distance, when the prepreg 400 is subjected to roll change in the unwinding process, the prepreg 400 may deviate to the outer side of the drum 500, and when the deviation exceeds an allowable value, the edge of the prepreg 400 may contact one of the deviation rectification rollers 102. At this time, the deviation rectification roller 102 can prevent the prepreg 400 from continuously moving outwards, and meanwhile, the prepreg 400 can drive the deviation rectification roller 102 to rotate, so that the deviation rectification roller 102 can apply a thrust opposite to the moving direction of the prepreg 400 to the prepreg 400, and thus the deviation rectification can be performed on the prepreg 400.

In addition, in the present embodiment, a driving device (defined as a fifth driving device 103) is further disposed on the supporting frame 101 of the roll feeder 100, and the fifth driving device 103 is used for providing a driving force for the rotation of the drum 500 (the fifth driving device 103 is a motor driving mechanism) to prevent the prepreg 400 from being damaged. This is because the drum 500 has a large weight, and if the prepreg 400 is rotated only by the tensile force of the prepreg 400, the prepreg 400 (which is the prepreg located between the drum 500 and the first roller) needs to bear a large force, and the tensile force borne by the prepreg can be reduced by the provision of the fifth driving device 103.

In this embodiment, a sensor is provided at the bottom of the rodless cylinder, when the first roller 3 stops rotating, the fifth driving device 103 drives the drum 500 to rotate, and the cloth storage roller 52 moves downward, and when the sensor detects the cloth storage roller 52, a corresponding electric signal is sent to the control device, and the control device controls the fifth driving device 103 to stop rotating according to the electric signal. The sensor can be a proximity switch, a travel switch and the like. The control device can be a single chip microcomputer, a PLC and the like and is used for controlling the work of the whole shearing assembly line.

As shown in fig. 1, fig. 2 and fig. 5, in the present embodiment, the conveyor 300 includes a supporting platform 31 and a conveying platform 32 disposed from top to bottom, and the supporting platform 31 is used for supporting the prepregs 400 conveyed out of the shearer 200, so that the shearer 200 shears the prepregs 400. The supporting platform 31 includes a first supporting plate 311, a second supporting plate 312, and a third driving device 313 and a fourth driving device 314 that can respectively drive the two supporting plates to move. Specifically, in this embodiment, the third driving device 313 includes a motor 3131, and a rack and pinion mechanism 3132 for connecting the motor 3131 to the first support plate 311, wherein the motor 3131 is connected to a gear 3132a, and the first support plate 311 is connected to a rack 3132b, and can rotate with the first support plate 311 moving horizontally. The fourth driving device 314 and the third driving device 313 may adopt the same structural design, and the two driving devices may drive the two support plates to translate in opposite directions when operating, so as to open an opening on the support platform 31 (even if the distance between the two support plates increases), and then make the cut prepreg 400 drop on the conveying platform 32, of course, the two driving devices may also drive the two support plates to translate, so as to reduce the distance between the two support plates, so as to be used for supporting the prepreg 400. The conveying platform 302 includes a conveying belt 321 and a driving motor 322 for driving the conveying belt to move, and the conveying platform 32 is used for conveying the cut prepregs 400 to a predetermined station.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A shear, comprising:

a frame;

the cutter is arranged on the rack;

the first roller is arranged on the frame and can be connected with a first driving device so as to rotate relative to the frame under the driving of the first driving device;

the second roller is arranged on the rack, is parallel to the first roller and is used for being matched with the first roller to clamp the object to be cut so that the object to be cut can be driven to move to the cutter when the first roller rotates, and the object to be cut is wound on a roller of a winding device;

the cloth storage device is used for applying force to the object to be cut between the first roller and the drum so as to increase the length of a motion path of the object to be cut between the drum and the first roller when the first roller stops rotating, so that the object to be cut between the first roller and the drum is tightened.

2. A shear according to claim 1, wherein the cloth accumulation means comprises:

the connecting mechanism is arranged on the rack;

the cloth storage roller is arranged on the connecting mechanism so as to be capable of moving up and down relative to the rack; the cloth storage roller is pressed on the object to be sheared between the first roller and the roller, and can drive the object to be sheared to move downwards when the first roller stops rotating so as to tighten the object to be sheared; and can ascend with the object to be sheared when the first roller drives the object to be sheared to move.

3. A shear according to claim 2, further comprising a second drive means, the second drive means being connected to the accumulation roller and being capable of driving the accumulation roller in an up and down motion.

4. A shear according to claim 3, wherein the second drive means comprises two rodless cylinders, the cylinders of both rodless cylinders being fixed to the frame, and the ends of the accumulation roller being mounted on the movable parts of both rodless cylinders.

5. A shear according to claim 2, wherein the accumulation roller comprises a third roller and a fourth roller arranged in parallel, the third roller and the fourth roller being movable up and down relative to the frame;

the shearing machine further comprises a fifth roller fixedly arranged on the rack, and the fifth roller is positioned between the third roller and the fourth roller and is arranged in parallel with the third roller.

6. A shear according to claim 5, further comprising a drive mechanism interfacing with the third and fourth rollers, respectively, for causing the third and fourth rollers to move in synchronism.

7. A shear according to claim 1, further comprising tension rollers mounted on the frame and arranged parallel to the first roller, the tension rollers and the first roller being arranged on either side of the cloth storage device for providing support to the material to be sheared passing through the cloth storage device.

8. A shear line, comprising:

the coil feeding machine is used for installing a roller for winding the object to be sheared;

a shearing machine as claimed in any one of claims 1 to 7, adapted to drive said roller to move, so as to unwind said object to be sheared, and shear the unwound object to be sheared.

9. The shearing assembly line of claim 8, wherein the reel feeder comprises a support frame, and the support frame is provided with a mounting position for mounting a roller for winding the object to be sheared; still be equipped with two on the support frame and rectify the roller, two are rectified the roller and all can be relative the support frame rotates to set up respectively the both ends of cylinder are used for treating when treating that the thing is scurried and is rolled up, treats that the thing of cutting applys the effort opposite with the drunkenness direction, with right treat that the thing is rectified.

10. The shearing assembly line of claim 9, further comprising a supporting platform and a conveying platform arranged from top to bottom, wherein the supporting platform is used for supporting the object to be sheared conveyed out of the shearing machine so as to facilitate the shearing machine to shear the object to be sheared; the supporting platform can be opened with an opening so as to enable the cut object to be cut to fall to the conveying platform, and the conveying platform is used for conveying the cut object to be cut to a preset station.