CN217324701U - Cutter device and cutting bed - Google Patents

Abstract

The embodiment of the application relates to the technical field of cutting equipment and discloses a cutter device and a cutting bed, wherein the cutter device comprises a cutter rest, a pressure plate, a cutter, a rotating part and two elastic parts; the pressure plate is connected with the tool rest and can move relative to the tool rest along a preset direction; the cutter penetrates through the cutter frame and the pressure plate in sequence, and the cutter can move along a preset direction relative to the cutter frame; the rotating piece is arranged on the pressure plate and can rotate around a preset direction along with the cutter relative to the pressure plate; the two elastic pieces are arranged between the rotating piece and the pressure plate and located on the rotating track of the rotating piece, one elastic piece is used for applying elastic force to the rotating piece when the rotating piece rotates clockwise, and the other elastic piece is used for applying elastic force to the rotating piece when the rotating piece rotates anticlockwise. The cutting deviation that the fabric appears can be caused because the cutting off knife deviates from the cutting off route of predesigned to cut off knife device and cutting bed that this application embodiment provided.

Description

Cutter device and cutting bed

Technical Field

The embodiment of the application relates to the technical field of cutting equipment, in particular to a cut-off knife device and a cutting bed.

Background

The cutting bed is a common cutting device used for cutting fabrics in the textile industry, and can receive a Computer Aided Design (CAD) instruction to realize automatic cutting of the fabrics so as to improve the fabric cutting efficiency. The cut-off knife is an important part in the cutting bed, the cutting bed controls the cut-off knife to move on the fabric according to a preset track, and controls the cut-off knife to vibrate back and forth relative to the fabric to cut the fabric, and the verticality between the cut-off knife and the fabric during movement directly influences the cutting precision of the fabric.

However, when the fabric is cut by the cutter in the existing cutting bed, the verticality between the cutter and the fabric during movement cannot be well ensured, so that the cutting route of the cutter during fabric cutting is easy to deviate from the pre-designed cutting route, and the fabric cutting deviation is caused.

SUMMERY OF THE UTILITY MODEL

An object of the embodiments of the present application is to provide a cutter device and a cutting bed, which can improve cutting deviation of a fabric caused by deviation of a cutter from a pre-designed cutting route.

In order to solve the above technical problem, an embodiment of the present application provides a cutting device, including a tool holder, a platen, a cutting knife, a rotating member, and two elastic members; the pressure plate is connected with the tool rest and can move relative to the tool rest along a preset direction; the cutter penetrates through the cutter frame and the pressure plate in sequence, and the cutter can move along a preset direction relative to the cutter frame; the rotating piece is arranged on the pressure plate and can rotate around a preset direction along with the cutter relative to the pressure plate; the two elastic pieces are arranged between the rotating piece and the pressure plate and located on the rotating track of the rotating piece, one elastic piece is used for applying elastic force to the rotating piece when the rotating piece rotates clockwise, and the other elastic piece is used for applying elastic force to the rotating piece when the rotating piece rotates anticlockwise.

The embodiment of the application also provides a cutting bed, which comprises the cutting knife device.

The utility model provides a cut-off knife device and cutting bed that this application embodiment provided, the cut-off knife tail end carries on spacingly through installing the rotation piece on the pressure disk, and rotate and be provided with two elastic components between piece and the pressure disk, the cut-off knife tail end has certain swing angle on the pressure disk promptly, when the yawing force that the cut-off knife blade both sides received appears changing, the tail end of cut-off knife can swing certain angle on the pressure disk with rotating the piece together, under the elastic force effect of elastic component, make the yawing force trend balanced that the cut-off knife blade both sides received, the part of avoiding the cut-off knife to cut into the surface fabric appears crooked phenomenon because of the yawing force unbalance that the cut-off knife blade both sides received, thereby ensure the straightness that hangs down between cut-off knife and the surface fabric when the motion, improve the cutting deviation that the cut-off knife leads to the surface fabric to appear because of skew predesigned cutting route.

In addition, the rotating part comprises a main body part and two extending parts, the main body part is rotatably arranged on the pressure plate, the cut-off knife penetrates through the main body part and can move along the relative main body part in the preset direction, the two extending parts are symmetrically arranged on the main body part relative to the cut-off knife, and the two extending parts are in one-to-one correspondence with the two elastic parts and are abutted against the corresponding elastic parts. In this way, the rotating member is rotatably connected to the pressure plate via the main body portion, and is brought into contact with the elastic member via the extending portion.

In addition, the cut-off knife device still includes two dampers with two extension one-to-one, and every damper sets up on the pressure disk, and the flexible end butt of every damper is established on the extension that corresponds to and is located the relative both sides of extension with the elastic component that corresponds on the direction that encircles the cut-off knife. Thus, the cutter can be prevented from swinging in a large angle in a short time by the damper.

In addition, the cut-off knife device still includes two jackshafts with two attenuator one-to-one, and the both ends of every jackshaft all are provided with rotatable axle sleeve, and the flexible of the attenuator that corresponds is established through the axle sleeve butt to the one end of every jackshaft is served, and the other end of every jackshaft is established on the extension that corresponds through the axle sleeve butt. In this way, the motion energy of the rotor during its oscillation on the pressure plate can be transferred smoothly to the damper via the intermediate shaft.

In addition, the cutting device also comprises a swinging sleeve, the swinging sleeve is rotatably connected with the pressure plate through a sliding sleeve, and the main body part and the swinging sleeve are fixed and can be rotatably arranged on the pressure plate. In this way, the rotary element can be rotatably arranged on the pressure plate via the wobble sleeve.

In addition, the cutting device also comprises a first rotary cutter shaft, the first rotary cutter shaft is arranged on the cutter rest and can rotate relative to the cutter rest along a preset direction, the cutting knife penetrates through the first rotary cutter shaft and can move along the preset direction relative to the first rotary cutter shaft, and the first rotary cutter shaft is fixed with the swing sleeve through a connecting piece. Therefore, the whole cutter can swing by a certain angle through the first rotary cutter shaft, so that the whole cutter is not deformed.

In addition, the cut-off knife device also comprises a connecting block and two cutter clamping pieces which are oppositely arranged on the connecting block, the connecting block is connected with the first cutter shaft, and the two cutter clamping pieces clamp the cut-off knife in the middle. Therefore, the part of the cutter between the cutter holder and the pressing plate can be clamped, and the part of the cutter between the cutter holder and the pressing plate is ensured not to be easily deformed.

In addition, a groove is arranged on the connecting block, and the connecting piece is arranged in the groove. Like this, can play the supporting role to the connecting piece through the connecting block, avoid the connecting piece cracked condition to appear easily.

In addition, the cutter device also comprises a second rotary cutter shaft, the second rotary cutter shaft is arranged at one end of the connecting block far away from the first rotary cutter shaft, and the cutter penetrates through the second rotary cutter shaft and can move along the preset direction relative to the second rotary cutter shaft. Like this, can play spacing effect through the part that second rotary cutter axle is located the cut-off knife between knife rest and the pressure disk to ensure the straightness of cut-off knife self.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

FIG. 1 is a schematic view of the forces applied to a cutter while cutting a fabric;

fig. 2 is a schematic perspective view of a cutting device provided in an embodiment of the present application;

fig. 3 is a schematic front view of a cutting device according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic view of a limiting structure of a cutter at a platen in the cutter device provided in the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following describes each embodiment of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in various embodiments of the present application in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present application, and the embodiments may be mutually incorporated and referred to without contradiction.

As shown in fig. 1, when the cutter in the cutting bed cuts the fabric, the cutter receives resistance force F from the fabric in a direction opposite to the blade edge when the cutter cuts the fabric along a pre-designed cutting path (indicated by a dotted line R), and in addition, the cutter receives lateral forces F1 and F2 from the fabric and acting on both sides of the blade body.

When the fabric is cut by the cutter in the cutting bed along a straight line, the lateral force from the fabric, which is received by the two sides of the cutter body, is in a balanced state, and when the fabric is cut by the cutter in the cutting bed along a curve, the lateral force from the fabric, which is received by the two sides of the cutter body, can be changed. For example, when the cutter is turned to the left side (with the direction of the blade as the front) in the cutting state shown in fig. 1, the lateral force f2 from the fabric on the left side of the cutter body increases, and the portion of the cutter closer to the bottom of the fabric is more likely to bend due to the increase of the lateral force on the left side of the cutter body. The cutting deviation is represented as uneven cutting surface in the thicker fabric, and is represented as inconsistent cutting surface of the fabric of the adjacent layer in the multilayer fabric.

The cutter can be bent when the lateral force received by the two sides of the cutter body changes because the rigidity of the cutter is limited, and meanwhile, the tail end of the cutter is limited by the pressing disc (used for pressing the fabric) and cannot swing on the pressing disc, so that when the lateral force received by the cutter at the two sides of the cutter body changes, the tail end of the cutter (namely one end of the cutter close to the fabric) cannot be adjusted in real time to avoid the bending phenomenon of the fabric cutting part of the cutter.

In order to make the cutter capable of adjusting when the lateral force applied to the two sides of the cutter body changes, so as to avoid the bending phenomenon of the fabric cut by the cutter, the applicant finds that the tail end of the cutter can have a certain free swing angle on the pressing disc so as to adapt to the situation that the lateral force applied to the two sides of the cutter body changes. Specifically, the tail end of the cutting knife is limited by rotating a rotating part arranged on the pressure plate, and an elastic part is arranged between the rotating part and the pressure plate, so that the tail end of the cutting knife has a certain free swinging angle on the pressure plate.

Like this, when the surface fabric was tailor along the curve to the cut-off knife in the cutting bed, the lateral force that comes from the surface fabric that the blade both sides of cut-off knife received changed, and the lateral force that the cut-off knife received in the blade both sides appears inequality, and the elastic force of elastic component can be overcome to the cut-off knife tail end, and appears swinging on the pressure disk for the lateral force trend that the blade both sides of cut-off knife received is balanced, and the bending phenomenon appears because of the unbalanced lateral force that the blade both sides of cut-off knife received in order to avoid the part that the surface fabric was cut out to the cut-off knife.

In the accompanying drawings, fig. 2 and fig. 3 respectively show a three-dimensional structure and a front view structure of a cutting device provided in an embodiment of the present application, fig. 4 shows a cross-sectional structure along a-a direction in fig. 3, and fig. 5 shows a limiting structure of a cutting knife at a platen in the cutting device provided in the embodiment of the present application.

The cutting device provided by the embodiment of the application comprises a tool rest 110, a pressure plate 120, a cutting knife 130, a rotating part 140 and two elastic parts 150; the platen 120 is connected to the tool holder 110 and is movable in a predetermined direction relative to the tool holder 110; the cutter 130 sequentially penetrates through the tool holder 110 and the platen 120, and the cutter 130 can move along a preset direction relative to the tool holder 110; the rotating member 140 is disposed on the platen 120 and can rotate in a predetermined direction with the cutter 130 relative to the platen 120; two elastic members 150 are disposed between the rotating member 140 and the pressure plate 120 on the rotation locus of the rotating member 140, one elastic member 150 for applying an elastic force to the rotating member 140 when the rotating member 140 rotates clockwise, and the other elastic member 150 for applying an elastic force to the rotating member 140 when the rotating member 140 rotates counterclockwise.

The tool rest 110 is a fixed base of the cutting device, the tool rest 110 can be connected with a moving mechanism of the cutting bed so as to drive the cutting tool 130 to move along a pre-designed cutting route under the control of the moving mechanism of the cutting bed, and meanwhile, the tool rest 110 can be connected with the pressure plate 120 and limit the cutting tool 130; the platen 120 is a component for pressing the fabric in the cutter device, and the platen 120 is connected with the tool holder 110 and can move along a preset direction relative to the tool holder 110 under the driving of a power source; the cutter 130 is a component used for cutting the fabric in the cutter device, and the cutter 130 is connected to a main shaft of the cutting bed and is driven by the main shaft to vibrate back and forth relative to the fabric; the rotating member 140 is a member of the cutter device for being mounted on the platen 120 to limit the cutter 130; the elastic member 150 may be a spring, a spring plate, or a disc spring, and the predetermined direction refers to a direction of a central axis (i.e., a central axis X in fig. 3) of the cutting blade 130.

The cutter device provided by the embodiment of the application, the tail end of the cutter 130 is limited by the rotating part 140 arranged on the pressing plate 120, two elastic parts 150 are arranged between the rotating part 140 and the pressing plate 120, namely, the tail end of the cutter 130 has a certain swinging angle on the pressing plate 120, when the lateral force received by the two sides of the cutter 130 body changes, the tail end of the cutter 130 and the rotating part 140 swing together for a certain angle on the pressing plate 120, under the action of the elastic force of the elastic parts 150, the lateral force received by the two sides of the cutter 130 body tends to be balanced, so that the bending phenomenon of the part of the fabric cut into by the cutter 130 due to the imbalance of the lateral force received by the two sides of the cutter 130 body is avoided, the verticality between the cutter 130 and the fabric during movement is ensured, and the cutting deviation of the fabric due to the deviation of the cutter 130 from a pre-designed cutting route is improved.

Here, when the elastic member 150 is a spring, the spring may be mounted on the pressure plate 120 through the guide post 151, one end of the guide post 151 is fixed on the pressure plate 120, the spring is sleeved on the guide post 151, two ends of the spring are respectively abutted against the rotating member 140 and the pressure plate 120, and the guide post 151 may guide the deformation of the spring.

In some embodiments of the present application, optionally, the rotating member 140 includes a main body 141 and two extending portions 142, the main body 141 is rotatably disposed on the pressing plate 120, the cutting knife 130 penetrates through the main body 141 and can move relative to the main body 141 along a predetermined direction, the two extending portions 142 are symmetrically disposed on the main body 141 with respect to the cutting knife 130, and the two extending portions 142 are in one-to-one correspondence with the two elastic members 150 and are disposed on the corresponding elastic members 150 in an abutting manner.

The main body 141 is a portion of the rotator 140 for limiting the position of the cutter 130, the extension 142 is a portion of the rotator 140 for abutting against the elastic member 150, and the two extension 142 are symmetrically disposed on the main body 141 with respect to the cutter 130, i.e., the two extension 142 are located on both sides of the body of the cutter 130. The tail end of the cutting knife 130 is limited by the main body 141 of the rotating member 140, the main body 141 of the rotating member 140 is provided with two pressing wheels 131 which can be aligned, the two pressing wheels 131 are in a group, and one group of pressing wheels 131 are oppositely arranged on two sides of the knife body of the cutting knife 130 to clamp the cutting knife 130, so that the cutting knife 130 can drive the rotating member 140 to swing on the pressing plate 120 by a certain angle while vibrating in a reciprocating manner relative to the main body 141 of the rotating member 140.

Here, the rotating member 140 is rotatably connected to the pressing plate 120 through the main body 141, and the cutting knife 130 is limited through the main body 141 to swing on the pressing plate 120 synchronously with the cutting knife 130, the rotating member 140 is abutted to the elastic member 150 through the two extending portions 142, when the cutting knife 130 drives the rotating member 140 to rotate clockwise relative to the pressing plate 120, one of the extending portions 142 compresses the corresponding elastic member 150 to apply an elastic force to the rotating member 140 through the elastic member 150, so that lateral forces on both sides of the cutting knife 130 tend to be balanced, and when the cutting knife 130 drives the rotating member 140 to rotate counterclockwise relative to the pressing plate 120, the other extending portion 142 compresses the corresponding elastic member 150 to apply an elastic force to the rotating member 140 through the elastic member 150, so that lateral forces on both sides of the cutting knife 130 tend to be balanced.

In some embodiments of the present application, optionally, the cutting device further includes two dampers 160 corresponding to the two extending portions 142 one by one, each damper 160 is disposed on the pressure plate 120, and a telescopic end of each damper 160 abuts against the corresponding extending portion 142 and is located on opposite sides of the extending portion 142 in a direction surrounding the cutting knife 130 with the corresponding elastic member 150. The damper 160 here may be an oil pressure damper.

The damper 160 is a member that provides resistance to reduce the energy of movement, and the cut-off knife 130 can be prevented from swinging at a large angle in a short time by the damper 160. When the cutting knife 130 performs corner cutting (i.e., the cutting knife 130 performs cutting in a direction changed), the lateral force of one side of the body of the cutting knife 130 is increased instantly, and the damper 160 can ensure that the cutting knife 130 can cut according to a pre-designed cutting route during corner cutting without large-angle swing, thereby ensuring the cutting accuracy of the corner cutting. Here, the two dampers 160 may be restrained by the end cap 121 on the pressure plate 120 to prevent the two dampers 160 from being separated from the pressure plate 120.

In some embodiments of the present application, optionally, the cutter device further includes two middle shafts 170 corresponding to the two dampers 160 one to one, two ends of each middle shaft 170 are provided with rotatable bushings 171, one end of each middle shaft 170 is abutted and arranged on the telescopic end of the corresponding damper 160 through the bushings 171, and the other end of each middle shaft 170 is abutted and arranged on the corresponding extending portion 142 through the bushings 171.

The intermediate shaft 170 is a member for transmitting the motion energy of the rotation member 140, which is disposed between the extension portion 142 of the rotation member 140 and the corresponding damper 160, and the bushings 171 disposed at both ends of the intermediate shaft 170 may function to smoothly transmit the motion energy of the rotation member 140, so that the motion energy of the rotation member 140 when swinging on the pressure plate 120 can be smoothly transmitted to the damper 160, thereby making the swinging of the rotation member 140 on the pressure plate 120 more stable.

Here, too, the position of the intermediate shaft 170 on the pressure plate 120 can be limited by the end cap 121 provided on the pressure plate 120, so that the intermediate shaft 170 is prevented from being detached from the pressure plate 120, and at the same time, the pressure plate 120 can be closed by the end cap 121.

In some embodiments of the present application, optionally, the cutting device further includes a swinging sleeve 180, the swinging sleeve 180 is rotatably connected to the pressure plate 120 via a sliding sleeve 181, and the main body portion 141 of the rotating member 140 is fixed to the swinging sleeve 180 so as to be rotatably disposed on the pressure plate 120.

The swing sleeve 180 is a part of the cutter device for rotatably connecting the rotation member 140 and the pressure plate 120, the swing sleeve 180 is rotatably connected to the pressure plate 120 through a sliding sleeve 181, the swing sleeve 180 may be formed in a ring shape to allow a sufficient space for the rotation member 140, and the body portion 141 of the rotation member 140 and the swing sleeve 180 are connected by a fastening member such as a bolt to be rotatably disposed on the pressure plate 120 through the swing sleeve 180.

In some embodiments of the present application, optionally, the cutting device further includes a first rotating shaft 190, the first rotating shaft 190 is disposed on the tool post 110 and can rotate around a preset direction relative to the tool post 110, the cutting knife 130 penetrates through the first rotating shaft 190 and can move along the preset direction relative to the first rotating shaft 190, and the first rotating shaft 190 is fixed with the swing sleeve 180 through a connecting member 220.

The first arbor 190 is a component for limiting the cutting knife 130 disposed on the knife rest 110, the first arbor 190 is also provided with two rotatable press wheels 131, two of the press wheels 131 are in a group, one group of press wheels 131 is disposed on two sides of the cutting knife 130 relatively to clamp the cutting knife 130, so that the cutting knife 130 can drive the first arbor 190 to swing on the knife rest 110 together with the first arbor 190 while vibrating reciprocally relative to the first arbor 190, the swing sleeve 180 is fixed with the swing sleeve 180 through a connecting member 220, and the connecting member 220 can be in the form of a connecting rod.

Through first arbor 190, can make cut-off knife 130 when the lateral force of blade both sides appears changing, not only the tail end of cut-off knife 130 can swing certain angle on pressure disk 120, and the part that cut-off knife 130 carried on spacingly through knife rest 110 in addition can swing on knife rest 110 equally to make the whole certain angle that can swing of cut-off knife 130, in order to ensure that the whole indeformable of cut-off knife 130.

In some embodiments of the present application, optionally, the cutter device further includes a connecting block 200 and two clamping members 210 oppositely disposed on the connecting block 200, the connecting block 200 is connected with the first spindle shaft 190, and the two clamping members 210 clamp the cutter 130 therebetween.

The connecting block 200 is a part of the cutting device connected to the first rotating shaft 190, and two clamping members 210 may be disposed on the connecting block 200, so that the part of the cutting knife 130 located between the knife rest 110 and the platen 120 is clamped by the two clamping members 210, thereby ensuring that the part of the cutting knife 130 located between the knife rest 110 and the platen 120 is not easily deformed. Here, the connecting block 200 may be integrally provided in a plate shape, and a length direction of the connecting block 200 is parallel to an axial direction of the cutter 130.

In some embodiments of the present application, optionally, a groove is provided on the connection block 200, and the connection member 220 is disposed in the groove.

In order to avoid the situation that the connecting piece 220 is broken due to insufficient strength, a groove can be formed in the connecting block 200, the connecting piece 220 is arranged in the groove of the connecting block 200 to support the connecting piece 220, the situation that the connecting piece 220 is broken easily is avoided, and meanwhile, the connecting block 200, the first rotating shaft 190 and the swing sleeve 180 can be driven to swing together.

In some embodiments of the present application, optionally, the cutter device further includes a second rotary cutter shaft 230, the second rotary cutter shaft 230 is disposed at an end of the connection block 200 away from the first rotary cutter shaft 190, and the cutter 130 penetrates through the second rotary cutter shaft 230 and is movable in a predetermined direction relative to the second rotary cutter shaft 230.

The second rotary knife shaft 230 is a component similar to the first rotary knife shaft 190 and has a limiting effect on the cutting knife 130, rotatable press wheels 131 are also arranged on the second rotary knife shaft 230, two press wheels 131 form a group, and one group of press wheels 131 is oppositely arranged on two sides of the cutting knife 130, so that the cutting knife 130 can drive the second rotary knife shaft 230 to swing together with the second rotary knife shaft 230 while vibrating in a reciprocating manner relative to the second rotary knife shaft 230, and the second rotary knife shaft 230 can limit the part of the cutting knife 130 between the knife rest 110 and the pressure plate 120, so as to ensure the straightness of the cutting knife 130.

The embodiment of the application also provides a cutting bed, which comprises the cutting knife device provided by the embodiment.

When the lateral force applied to the two sides of the blade of the cutting knife 130 changes, the tail end of the cutting knife 130 swings on the pressing plate 120 by a certain angle together with the rotating member 140, and under the action of the elastic force of the elastic member 150, the lateral force applied to the two sides of the blade of the cutting knife 130 tends to be balanced, so that the bending phenomenon of the fabric cut by the cutting knife 130 due to the unbalanced lateral force applied to the two sides of the blade of the cutting knife 130 is avoided, the verticality between the cutting knife 130 and the fabric during movement is ensured, and the cutting deviation of the fabric due to the deviation of the cutting knife 130 from the pre-designed cutting route is improved.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the present application, and that various changes in form and details may be made therein without departing from the spirit and scope of the present application in practice.

Claims (10)

1. A cutter device, comprising:

a tool holder;

the pressure plate is connected with the tool rest and can move relative to the tool rest along a preset direction;

the cutter penetrates through the cutter frame and the pressure plate in sequence, and can move along the preset direction relative to the cutter frame;

the rotating piece is arranged on the pressure plate and can rotate around the preset direction along with the cutter relative to the pressure plate;

two elastic components, set up rotate the piece with between the pressure disk, and be located on the rotation orbit of rotation piece, one the elastic component is used for rotating the piece along clockwise rotation when right it exerts the elastic force to rotate the piece, another the elastic component is used for rotating the piece along anticlockwise rotation when right it exerts the elastic force to rotate the piece.

2. The cutter device according to claim 1, wherein:

the rotating part comprises a main body part and two extending parts, the main body part is rotatably arranged on the pressure plate, the cut-off knife penetrates through the main body part and can be arranged in the opposite direction of the preset direction, the extending parts are arranged on the main body part and the elastic parts in a one-to-one correspondence mode and are connected with the corresponding extending parts in an abutting mode.

3. The cutter device according to claim 2, wherein:

the cut-off knife device still include with two dampers of extension one-to-one, every the damper sets up on the pressure disk, every the flexible end butt of damper is established corresponding on the extension, and with corresponding the elastic component is encircleing lie in the direction of cut-off knife the relative both sides of extension.

4. The cutter device according to claim 3, wherein:

the cut-off knife device still include with two the attenuator one-to-one two jackshafts, every the both ends of jackshaft all are provided with rotatable axle sleeve, every the one end of jackshaft is passed through the axle sleeve butt is established corresponding the flexible of attenuator is served, every the other end of jackshaft is passed through the axle sleeve butt is established corresponding on the extension.

5. The cutter device according to claim 2, wherein:

the cut-off knife device still includes the swing cover, the swing cover through the sliding sleeve with the pressure disk rotates and is connected, the main part with the swing cover is fixed, in order rotationally to set up on the pressure disk.

6. The cutter device according to claim 5, wherein:

the cut-off knife device still includes first arbor, first arbor sets up on the knife rest, and can wind it is relative to predetermine the direction the knife rest rotates, the cut-off knife runs through first arbor, can be relative first arbor is followed it removes to predetermine the direction, first arbor through the connecting piece with the swing cover is fixed.

7. The cutter device according to claim 6, wherein:

the cut-off knife device still includes the connecting block and sets up relatively two double-layered knife spare on the connecting block, the connecting block with first arbor is connected, two the double-layered knife spare will the cut-off knife centre gripping is in the centre.

8. The cutter device according to claim 7, wherein:

the connecting block is provided with a groove, and the connecting piece is arranged in the groove.

9. The cutter device according to claim 7, wherein:

the cut-off knife device still includes second commentaries on classics arbor, the setting of second commentaries on classics arbor is in the connecting block is kept away from the one end of first commentaries on classics arbor, the cut-off knife runs through second commentaries on classics arbor, can be relative second commentaries on classics arbor is followed predetermine the direction and removes.

10. A cutting bed, comprising:

a cutter device according to any one of claims 1 to 9.

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