CN212351335U

CN212351335U - Flush mechanism of flush cut

Info

Publication number: CN212351335U
Application number: CN202020673170.7U
Authority: CN
Inventors: 方永龄; 匡升权; 蒋冬林; 李奇烘
Original assignee: Nanxing Machinery Co Ltd
Current assignee: Nanxing Machinery Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-01-15
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to the technical field of edge sealing, in particular to a flat-cutting flush mechanism, which comprises a fixed seat, a first translation mechanism arranged on the fixed seat and a first cutting mechanism arranged on the fixed seat in a sliding way, wherein the first translation mechanism is used for driving the first cutting mechanism to move transversely; the first cutting mechanism comprises a first base, a first rotating assembly, a first pushing mechanism, a first cutting device and a first sliding block, the fixed base is provided with a sliding rail, and the first sliding block is arranged on the sliding rail in a sliding manner; the first sliding block is arranged at one end of the first base, the first rotating assembly is rotatably arranged at the other end of the first base, the first cutting device is arranged on the first rotating assembly, and the first pushing mechanism is used for driving the first rotating assembly to rotate along the first base. An object of the utility model is to provide a flush mechanism of concora crush has solved the lower problem of traditional bag sealer belt cutting work efficiency.

Description

Flush mechanism of flush cut

Technical Field

The utility model relates to a banding technical field, concretely relates to flush mechanism of flush cut.

Background

The existing edge sealing technology is that when a wood plate is subjected to edge sealing by an edge sealing machine, a cutter and the wood plate move relatively, the relative position of the cutter and the wood plate is sensed by an inductor, the wood plate is subjected to front and back belt cutting when the wood plate is moved to a certain position, the included angle between the cutter and the edge sealing belt is 45 degrees, the stroke of the belt cutting cutter is 225 plus 250mm, the belt cutting time is long, so that the belt cutting work can be finished only when the operation speed of a workpiece on a chain conveying plate is 400mm/s, the operation speed of the workpiece is slow, and the work efficiency of the edge sealing machine is influenced. If the sealing tape thickness is more than 3mm, the cutting time is longer, the working running speed is reduced, and therefore the working efficiency of the edge bonding machine is reduced.

Disclosure of Invention

In order to overcome the shortcoming and the deficiency that exist among the prior art, the utility model aims to provide a flush joint mechanism of concora crush has solved the lower problem of traditional bag sealer belt cutting work efficiency.

The utility model discloses a realize through following technical scheme:

a flat-cutting flush mechanism comprises a fixed seat, a first translation mechanism arranged on the fixed seat and a first cutting mechanism arranged on the fixed seat in a sliding manner, wherein the first translation mechanism is used for driving the first cutting mechanism to move transversely;

the first cutting mechanism comprises a first base, a first rotating assembly, a first pushing mechanism, a first cutting device, a first sliding block and a first profiling mechanism, the fixed base is provided with a sliding rail, and the first sliding block is arranged on the sliding rail in a sliding manner; the first sliding block is arranged at one end of the first base, the first profiling mechanism is arranged at one side of the first base, and the first profiling mechanism is used for abutting against a workpiece; the first rotating assembly is rotatably arranged at the other end of the first base, the first cutting device is arranged on the first rotating assembly, and the first pushing mechanism is used for driving the first rotating assembly to rotate along the first base.

The first translation mechanism comprises a first linear cylinder and a first accelerating cylinder, the first accelerating cylinder is arranged at one end of the fixing base, the first linear cylinder is arranged at the positions of the two ends of the fixing base, and the first base is connected with the output end of the first linear cylinder.

The first base comprises a first y-axis buffer component and a first x-axis buffer component; the first y-axis buffer assembly comprises a first y-axis sliding block, a first y-axis sliding rail, a first y-axis buffer cylinder and a first y-axis fixing plate, the first x-axis buffer assembly comprises a first x-axis sliding block, a first x-axis sliding rail, a first x-axis buffer cylinder and a first x-axis fixing plate, the first sliding block is arranged on one end face of the first y-axis fixing plate, the first y-axis sliding rail and the first y-axis buffer cylinder are arranged on the other end face of the first y-axis fixing plate, the first y-axis sliding block is arranged on one end face of the first x-axis fixing plate, and the first y-axis sliding block is arranged on the first y-axis sliding rail in a sliding manner; the first x-axis sliding rail and the first x-axis buffer cylinder are arranged on the other end face of the first x-axis fixing plate, the first x-axis sliding block is arranged on the first rotating assembly, and the first x-axis sliding block is arranged on the first x-axis sliding rail in a sliding mode.

The first rotating assembly comprises a first rotating bottom plate, a first transverse adjusting seat and a first rotating seat, one end face of the first rotating bottom plate is connected with the first base, and the first transverse adjusting seat is arranged on the other end face of the first rotating bottom plate in a sliding mode; the first rotating seat is rotatably arranged on the first transverse adjusting seat, the output end of the first pushing mechanism is connected with the first rotating seat, and the first cutting device is arranged on the first rotating seat.

The cutting device comprises a fixed seat, a first rotating assembly, a second rotating assembly, a first cutting mechanism, a second cutting mechanism and a limiting piece, wherein a first abutting wheel is arranged on one side of the first rotating assembly;

when the first translation mechanism drives the first cutting mechanism to move and enables the first abutting wheel to abut against the first inclined surface, the first abutting wheel rolls along the first inclined surface and drives the first rotating assembly to rotate in the direction away from the first cutting device.

The fixing seat is provided with a first base, a second base and a third base, wherein one end of the fixing seat close to the first cutting mechanism is further provided with a first buffer, and the first buffer is used for abutting against the first base.

The first profiling mechanism comprises a first profiling bottom plate, a first profiling sliding block, a first profiling sliding rail, a first profiling lifting cylinder and a first profiling pressing piece, one end face of the first profiling bottom plate is arranged on the first base, the first profiling lifting cylinder is arranged on one side of the first profiling bottom plate, and the first profiling sliding block is arranged on the other end face of the first profiling bottom plate; the first profiling sliding block is arranged on a first profiling sliding rail in a sliding mode, the first profiling sliding rail is arranged on a first profiling pressing piece, and the output end of the first profiling lifting cylinder is connected with the first profiling pressing piece.

The flush cutting mechanism further comprises a second translation mechanism arranged on the fixed seat and a second cutting mechanism arranged on the fixed seat in a sliding mode, the second translation mechanism is used for driving the second cutting mechanism to transversely move, and the structure of the second cutting mechanism is mirror-symmetrical to that of the first cutting mechanism.

The second translation mechanism comprises a second linear cylinder and a second acceleration cylinder, the second acceleration cylinder is arranged at the other end of the fixing seat, the second linear cylinder is arranged at the positions, not at the two ends, of the fixing seat, and the second cutting mechanism is connected with the output end of the second linear cylinder.

The utility model has the advantages that:

the problem of the banding machine cut area work efficiency lower is solved: the utility model discloses a flush joint mechanism of truncation compares with traditional tangential belt mode, the utility model discloses a mode of rotating first cutting device cuts off the banding area of work piece, because the pivoted stroke is less, so the time of cutting is shorter, can greatly reduce the off-time to the banding area, increases the work efficiency that the banding machine tangential belt.

Drawings

The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.

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

Fig. 2 is a schematic view of a part of the structure of the present invention.

Fig. 3 is a schematic structural diagram of the first cutting mechanism of the present invention.

Fig. 4 is an exploded view of the first cutting mechanism of the present invention.

Reference numerals

A fixed seat-1, a slide rail-11, a first buffer-12, a second buffer-13,

a first translation mechanism-2, a first linear cylinder-21, a first acceleration cylinder-22,

a first cutting mechanism-3, a first slide-31,

a first base-32, a first y-axis buffer component-321, a first y-axis slider-3211, a first y-axis slide rail-3212, a first y-axis buffer cylinder-3213, a first y-axis fixing plate-3214, a first x-axis buffer component-322, a first x-axis slider-3221, a first x-axis slide rail-3222, a first x-axis buffer cylinder-3223, a first x-axis fixing plate-3224,

a first rotating assembly-33, a first rotating base-plate-331, a first lateral adjusting seat-332, a first rotating seat-333,

a first pushing mechanism-34, a first cutting device-35,

a first profiling mechanism-36, a first profiling bottom plate-361, a first profiling slider-362, a first profiling slide-363, a first profiling lifting cylinder-364, a first profiling press-piece-365, a first contact wheel-37,

a second translation mechanism-4, a second linear cylinder-41, a second acceleration cylinder-42, a second cutting mechanism-5, a second contact wheel-51,

a limiting piece-6, a first inclined surface-61 and a second inclined surface-62.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

It should be noted that the structures shown in the drawings are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used for limiting the practical limitations of the present invention, so that the modifications or adjustments of any structure do not have the essential meaning in the art, and the technical contents disclosed in the present invention should still fall within the scope that the functions and the achievable objects of the present invention can be achieved without affecting the present invention.

As shown in fig. 1 to 4, a flush cutting and head aligning mechanism includes a fixed seat 1, a first translation mechanism 2 disposed on the fixed seat 1, and a first cutting mechanism 3 slidably disposed on the fixed seat 1, wherein the first translation mechanism 2 is configured to drive the first cutting mechanism 3 to traverse; the first cutting mechanism 3 comprises a first base 32, a first rotating assembly 33, a first pushing mechanism 34, a first cutting device 35, a first sliding block 31 and a first profiling mechanism 36, the fixed seat 1 is provided with a sliding rail 11, and the first sliding block 31 is slidably arranged on the sliding rail 11; the first sliding block 31 is arranged at one end of the first base 32, the first profiling mechanism 36 is arranged at one side of the first base 32, and the first profiling mechanism 36 is used for pressing a workpiece; the first rotating assembly 33 is rotatably disposed at the other end of the first base 32, the first cutting device 35 is mounted on the first rotating assembly 33, and the first pushing mechanism 34 is configured to drive the first rotating assembly 33 to rotate along the first base 32.

The embodiment also discloses a processing method of the flat cutting and head aligning mechanism on the basis of the flat cutting and head aligning mechanism, and the method comprises the following steps:

A. the edge bonding machine drives the workpiece to move to a working area of the first cutting mechanism 3;

B. when the workpiece is driven to be in an aligned state with the first cutting mechanism 3, the first translation mechanism 2 drives the first cutting mechanism 3 to move, so that the whole first cutting mechanism 3 and the workpiece keep a relatively static state in the moving direction of the workpiece, and meanwhile, the first profiling mechanism 36 moves towards the direction close to the workpiece until the first profiling mechanism 36 is pressed against the workpiece;

C. the first pushing mechanism 34 drives the first rotating assembly 33 to rotate in a direction close to the workpiece, and the first cutting device 35 cuts off the edge sealing belt arranged on the workpiece;

D. the first translation mechanism 2 drives the first cutting mechanism 3 away from the workpiece and resets, and the first die mechanism 36 and the first pushing mechanism 34 reset simultaneously.

The flush mechanism of a concora crush of this embodiment compares with traditional tangential belt mode, the utility model discloses a mode that rotates first cutting device 35 cuts off the banding area of work piece, because the pivoted stroke is less, so the time of cutting is shorter, can greatly reduce the off-time to the banding area of work piece, increases the work efficiency that the banding machine cut the area.

Specifically, the first translation mechanism 2 includes a first linear cylinder 21 and a first acceleration cylinder 22, the first acceleration cylinder 22 is disposed at one end of the fixing base 1, the first linear cylinder 21 is disposed at the non-two end positions of the fixing base 1, and the first base 32 is connected to an output end of the first linear cylinder 21. After the sensor of the edge bonding machine detects that the workpiece moves to the corresponding position, the output end of the first accelerating cylinder 22 directly impacts the first cutting mechanism 3, so that a transverse accelerating force is applied to the first cutting mechanism 3, and the uniform-speed translation of the first cutting mechanism 3 is more stable.

Specifically, the first base 32 includes a first y-axis buffer assembly 321 and a first x-axis buffer assembly 322; the first y-axis buffer assembly 321 includes a first y-axis slider 3211, a first y-axis slide rail 3212, a first y-axis buffer cylinder 3213, and a first y-axis fixing plate 3214, the first x-axis buffer assembly 322 includes a first x-axis slider 3221, a first x-axis slide rail 3222, a first x-axis buffer cylinder 3223, and a first x-axis fixing plate 3224, the first slider 31 is disposed on one end surface of the first y-axis fixing plate 3214, the first y-axis slide rail 3212 and the first y-axis buffer cylinder 3213 are both disposed on the other end surface of the first y-axis fixing plate 3214, an output end of the first y-axis buffer cylinder 3213 is connected to the first x-axis fixing plate 3224, the first y-axis slider 3211 is disposed on one end surface of the first x-axis fixing plate 3224, and the first y-axis slider 1 is slidably disposed on the first y-axis slide rail 3212; the first x-axis slide rail 3222 and the first x-axis buffer cylinder 3223 are both disposed on the other end surface of the first x-axis fixing plate 3224, an output end of the first x-axis buffer cylinder 3223 is connected to the first rotating assembly 33, the first x-axis slider 3221 is disposed on the first rotating assembly 33, and the first x-axis slider 3221 is slidably disposed on the first x-axis slide rail 3222.

Specifically, the flat-cut flush head mechanism further includes a first profiling mechanism 36, the first profiling mechanism 36 includes a first profiling bottom plate 361, a first profiling slider 362, a first profiling slide rail 363, a first profiling lifting cylinder 364 and a first profiling pressing part 365, one end surface of the first profiling bottom plate 361 is disposed on the first base 32, and specifically, one end surface of the first profiling bottom plate 361 is disposed on the first y-axis fixing plate 3214; the first profiling lifting cylinder 364 is arranged on one side of the first profiling bottom plate 361, and the first profiling slider 362 is arranged on the other end face of the first profiling bottom plate 361; the first profile slide 362 is slidably disposed on a first profile slide rail 363, the first profile slide rail 363 is disposed on a first profile pressing member 365, and an output end of the first profile lifting cylinder 364 is connected to the first profile pressing member 365. As shown in FIG. 4, by providing the first y-axis damping member 331, the tightness between the first fence mechanism 36 and the workpiece can be well controlled.

Specifically, the first rotating assembly 33 includes a first rotating base plate 331, a first lateral adjusting seat 332, and a first rotating seat 333, one end surface of the first rotating base plate 331 is connected to the first base 32, and the first lateral adjusting seat 332 is slidably disposed on the other end surface of the first rotating base plate 331; the first rotating seat 333 is rotatably disposed on the first lateral adjusting seat 332, the output end of the first pushing mechanism 34 is connected to the first rotating seat 333, and the first cutting device 35 is disposed on the first rotating seat 333. In the present embodiment, the first cutting device 35 is formed by a combination of a conventional cutting blade and a motor, and the position of the first cutting device 35 can be adjusted by adjusting the position of the first transverse adjusting seat 332; the first pushing mechanism 34 is preferably an air cylinder, and the first cutting device 35 has a heavy weight, so the arrangement of the first x-axis buffer assembly 322 can play a certain buffer role on the first cutting device 35 when the first pushing mechanism 34 pulls back the first rotating assembly 33, thereby avoiding the damage of the components caused by inertia.

Specifically, a first contact wheel 37 is arranged on one side of the first rotating assembly 33, a limiting member 6 is arranged on one side of the fixed seat 1 close to the first cutting mechanism 3, and the limiting member 6 is provided with a first inclined surface 61 for contacting the first contact wheel 37; when the first translating mechanism 2 drives the first cutting mechanism 3 to move and the first contact wheel 37 abuts against the first inclined surface 61, the first contact wheel 37 rolls along the first inclined surface 61 and drives the first rotating assembly 33 to rotate away from the first cutting device 35. Through setting up locating part 6, shift by force the removal of first cutting mechanism 3 to prevent to scotch the sheet material.

Specifically, the fixing base 1 is provided with a first buffer 12 at one end close to the first cutting mechanism 3, the first buffer 12 is used for abutting against the first base 32, and the first buffer 12 acts on the first cutting mechanism 3 to increase the braking effect of the first cutting mechanism 3 in the high-speed movement.

In this embodiment, the accessible drives first cutting mechanism 3 twice respectively to the realization is to cutting off of work piece front and back both ends banding area, but the operation can reduce cutting efficiency like this, so in this embodiment, through increasing a set of second cutting mechanism 5 with 3 mirror symmetry of first cutting mechanism and the second translation mechanism 4 that drives 5 removals of second cutting mechanism, thereby the work piece gets into from the one end that fixing base 1 is close to first cutting mechanism 3 and arrives the utility model discloses a work area, first cutting mechanism 3 and second cutting mechanism 5 synchronous motion afterwards to cut the banding area around the work piece respectively, and the theory of operation of second cutting mechanism 5 is unanimous basically with the theory of operation of first cutting mechanism 3, no longer gives details here. Meanwhile, the other end of the fixed seat 1 is also provided with a second buffer 13, and the second buffer 13 acts on the second cutting mechanism 5 to increase the braking effect of the second cutting mechanism 5 in high-speed movement; in addition, a second contact wheel 51 is also arranged at a corresponding position of the second cutting mechanism 5, a second inclined surface 62 for the second contact wheel 51 to contact is also arranged on the limiting member 6, the direction of the inclined surface of the second inclined surface 62 is opposite to that of the first inclined surface 61, and the second contact wheel 51 is matched with the second inclined surface 62, so that the second cutting mechanism 5 is physically limited at the beginning, the second cutting mechanism 5 is prevented from being rubbed with the workpiece when the workpiece moves to the corresponding position, the second contact wheel 51 is gradually separated from the second inclined surface 62 after the second cutting mechanism 5 moves, and then the workpiece can be normally cut.

Specifically, the second translation mechanism 4 includes a second linear cylinder 41 and a second acceleration cylinder 42, the second acceleration cylinder 42 is disposed at the other end of the fixing base 1, the second linear cylinder 41 is disposed at the non-end position of the fixing base 1, the second cutting mechanism (5) is connected to the output end of the second linear cylinder 41, the second acceleration cylinder 42 has a function identical to that of the first acceleration cylinder 22, and the second linear cylinder 41 has a function identical to that of the first linear cylinder 21, which is not described herein again.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a flush mechanism of flush cut which characterized in that: the cutting device comprises a fixed seat (1), a first translation mechanism (2) arranged on the fixed seat (1) and a first cutting mechanism (3) arranged on the fixed seat (1) in a sliding manner, wherein the first translation mechanism (2) is used for driving the first cutting mechanism (3) to transversely move;

the first cutting mechanism (3) comprises a first base (32), a first rotating assembly (33), a first pushing mechanism (34), a first cutting device (35), a first sliding block (31) and a first profiling mechanism (36), the fixed seat (1) is provided with a sliding rail (11), and the first sliding block (31) is arranged on the sliding rail (11) in a sliding manner; the first sliding block (31) is arranged at one end of the first base (32), the first profiling mechanism (36) is arranged at one side of the first base (32), and the first profiling mechanism (36) is used for abutting against a workpiece; the first rotating assembly (33) is rotatably arranged at the other end of the first base (32), the first cutting device (35) is arranged on the first rotating assembly (33), and the first pushing mechanism (34) is used for driving the first rotating assembly (33) to rotate along the first base (32).

2. A flush mechanism as claimed in claim 1, wherein: first translation mechanism (2) include first straight line cylinder (21) and first accelerated cylinder (22), the one end of fixing base (1) is located in first accelerated cylinder (22), the non-both ends position of fixing base (1) is located in first straight line cylinder (21), first base (32) are connected with the output of first straight line cylinder (21).

3. A flush mechanism as claimed in claim 1, wherein: the first base (32) comprises a first y-axis buffer assembly (321) and a first x-axis buffer assembly (322); the first y-axis buffer component (321) comprises a first y-axis sliding block (3211), a first y-axis sliding rail (3212), a first y-axis buffer cylinder (3213) and a first y-axis fixing plate (3214), the first x-axis buffer component (322) comprises a first x-axis slider (3221), a first x-axis slide rail (3222), a first x-axis buffer cylinder (3223) and a first x-axis fixing plate (3224), the first sliding block (31) is arranged on one end surface of the first y-axis fixing plate (3214), the first y-axis slide rail (3212) and the first y-axis buffer cylinder (3213) are both arranged on the other end surface of the first y-axis fixing plate (3214), the output end of the first y-axis buffer cylinder (3213) is connected with a first x-axis fixing plate (3224), the first y-axis sliding block (3211) is arranged on one end surface of the first x-axis fixing plate (3224), the first y-axis sliding block (3211) is arranged on a first y-axis sliding rail (3212) in a sliding manner; the first x-axis sliding rail (3222) and the first x-axis buffer cylinder (3223) are both arranged on the other end face of the first x-axis fixing plate (3224), the output end of the first x-axis buffer cylinder (3223) is connected with the first rotating assembly (33), the first x-axis sliding block (3221) is arranged on the first rotating assembly (33), and the first x-axis sliding block (3221) is slidably arranged on the first x-axis sliding rail (3222).

4. A flush mechanism as claimed in claim 1, wherein: the first rotating assembly (33) comprises a first rotating bottom plate (331), a first transverse adjusting seat (332) and a first rotating seat (333), one end face of the first rotating bottom plate (331) is connected with the first base (32), and the first transverse adjusting seat (332) is arranged on the other end face of the first rotating bottom plate (331) in a sliding mode; the first rotating seat (333) is rotatably arranged on the first transverse adjusting seat (332), the output end of the first pushing mechanism (34) is connected with the first rotating seat (333), and the first cutting device (35) is arranged on the first rotating seat (333).

5. A flush mechanism as claimed in claim 1, wherein: a first contact wheel (37) is arranged on one side of the first rotating assembly (33), a limiting piece (6) is arranged on one side, close to the first cutting mechanism (3), of the fixed seat (1), and a first inclined surface (61) used for abutting against the first contact wheel (37) is arranged on the limiting piece (6);

when the first translation mechanism (2) drives the first cutting mechanism (3) to move and enables the first contact wheel (37) to contact the first inclined surface (61), the first contact wheel (37) rolls along the first inclined surface (61) and drives the first rotating assembly (33) to rotate in the direction away from the first cutting device (35).

6. A flush mechanism as claimed in claim 1, wherein: one end of the fixed seat (1) close to the first cutting mechanism (3) is further provided with a first buffer (12), and the first buffer (12) is used for abutting against the first base (32).

7. A flush mechanism as claimed in claim 1, wherein: the first profiling mechanism (36) comprises a first profiling bottom plate (361), a first profiling sliding block (362), a first profiling sliding rail (363), a first profiling lifting cylinder (364) and a first profiling pressing piece (365), one end face of the first profiling bottom plate (361) is arranged on the first base (32), the first profiling lifting cylinder (364) is arranged on one side of the first profiling bottom plate (361), and the first profiling sliding block (362) is arranged on the other end face of the first profiling bottom plate (361); the first profiling sliding block (362) is arranged on a first profiling sliding rail (363) in a sliding mode, the first profiling sliding rail (363) is arranged on a first profiling pressing piece (365), and the output end of the first profiling lifting cylinder (364) is connected with the first profiling pressing piece (365).

8. A flush head mechanism according to any one of claims 1 to 7, wherein: the flush cutting and head aligning mechanism further comprises a second translation mechanism (4) arranged on the fixed seat (1) and a second cutting mechanism (5) arranged on the fixed seat (1) in a sliding mode, the second translation mechanism (4) is used for driving the second cutting mechanism (5) to transversely move, and the structure of the second cutting mechanism (5) is mirror-symmetrical to the structure of the first cutting mechanism (3).

9. A flush mechanism as claimed in claim 8, wherein: the second translation mechanism (4) comprises a second linear cylinder (41) and a second acceleration cylinder (42), the second acceleration cylinder (42) is arranged at the other end of the fixing seat (1), the second linear cylinder (41) is arranged at the non-two-end position of the fixing seat (1), and the second cutting mechanism (5) is connected with the output end of the second linear cylinder (41).