CN112264655B

CN112264655B - Flat-bed machine is opened to aluminium book based on adjustable length that cuts of production demand

Info

Publication number: CN112264655B
Application number: CN202011088555.8A
Authority: CN
Inventors: 赖宗剑
Original assignee: 佛山科帅精密机械有限公司
Current assignee: Foshan Keshuai Precision Machinery Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2022-04-19
Anticipated expiration: 2040-10-13
Also published as: CN112264655A

Abstract

The invention relates to an aluminum coil cutting device, in particular to an aluminum coil decoiling and flattening machine capable of adjusting cutting length based on production requirements, which comprises a bottom transmission roller frame, a guide rod, a top seat, an aluminum coil flattening component, an aluminum coil cutting length adjusting component and the like; a plurality of guide bars are fixedly installed on two sides of the bottom transmission roller frame and symmetrically arranged, and the top seat is fixedly installed on one side of the bottom transmission roller frame. According to the invention, the top transmission roller frame rotates anticlockwise when the bottom transmission roller frame rotates clockwise, so that the aluminum coil is continuously conveyed rightwards, the aluminum coil which can be bent is continuously pressed to be flattened in the conveying process, and the aluminum coil is cut into aluminum plates with different lengths, so that the device can adjust the cutting length of the aluminum coil, and realize small-specification cutting of the aluminum plates.

Description

Flat-bed machine is opened to aluminium book based on adjustable length that cuts of production demand

Technical Field

The invention relates to the technical field of aluminum coil cutting, in particular to an aluminum coil decoiling machine capable of adjusting cutting length based on production requirements.

Background

The aluminium book need cut the aluminium book when using, cut into the different aluminum plate of specification to different application scenes with it, the aluminium book is levelled and is had the bending, and the bending easily causes and cuts the limit of sticking up, can reduce aluminum plate's quality influence subsequent use, need to carry out the flattening to the aluminium book at the in-process of cutting in order to promote aluminum plate's production quality, current aluminium book cutting device generally can only carry out the tailorring of fixed specification to the aluminium book, the function is single, the aluminum plate of tailorring different specifications need change the operating equipment, therefore, need design one kind can level and smooth aluminum plate, be applicable to various specifications and cut the adjustable flat-bed machine of opening of aluminium book based on production demand that cuts the needs.

Disclosure of Invention

The invention aims to provide an aluminum coil uncoiling flat machine which can flatten an aluminum plate, is suitable for cutting requirements of various specifications and can adjust the cutting length based on production requirements, and aims to solve the problems in the background art.

The technical scheme of the invention is as follows: the utility model provides an aluminium book flat-bed machine of opening based on production demand is adjustable cuts length, includes that bottom drive roller frame, guide bar, footstock, aluminium book flatten the subassembly, the aluminium book cuts length adjusting part, spacing subassembly and guide wheel carrier, a plurality of guide bar fixed mounting just is the symmetry setting in bottom drive roller frame both sides, footstock fixed mounting is in bottom drive roller frame one side, the aluminium book flatten the subassembly and install on bottom drive roller frame and be connected with the guide bar, the aluminium book cuts length adjusting part and installs on the footstock and be connected with bottom drive roller frame, spacing subassembly mounting is in aluminium book and is cut length adjusting part one side, guide wheel carrier fixed mounting is in aluminium book subassembly one side of flattening.

In one of them embodiment, the subassembly that flattens is rolled up to aluminium includes top driving roller frame, first compression spring, meshing gear, sprocket and chain, top driving roller frame slidingtype is installed on the guide bar, first compression spring one end fixed mounting is on top driving roller frame, and the other end and guide bar fixed connection, and the guide bar passes first compression spring, and is a plurality of meshing gear fixed mounting is in the driving roller one end of top driving roller frame and bottom driving roller frame, and the meshing gear of top driving roller frame meshes with the meshing gear of the bottom driving roller frame that corresponds mutually, and is a plurality of sprocket fixed mounting is in the driving roller one end of bottom driving roller frame, the chain is around adorning at the sprocket.

In one embodiment, the aluminum roll cutting length adjusting assembly comprises a top plate, a guide rod, a cutting knife, a second compression spring, a bevel plate, a first driving shaft, an overrunning clutch, a driven sector gear, a rack, a second driving shaft, a belt pulley, a flat belt, a spline shaft, a first driving sector gear, a second driving sector gear, a third driving sector gear and a driving gear, wherein the top plate is fixedly installed on two sides of the top seat respectively, the guide rod is fixedly installed on the top plate, two ends of the cutting knife are slidably installed on the guide rod, one end of the second compression spring is fixedly installed on the cutting knife, the other end of the second compression spring is fixedly connected with one end of the guide rod, the guide rod penetrates through the second compression spring, the bevel plate is fixedly installed on one side of the top plate, the first driving shaft is rotatably installed on the upper part of the bevel plate, and the overrunning clutch is fixedly installed at one end of the first driving shaft, driven sector gear fixed mounting is in freewheel clutch one side, rack fixed mounting just can mesh with driven sector gear mutually at the sword one end of cutting, the second drive shaft rotary type is installed in the inclined plane board lower part, two the belt pulley is fixed mounting respectively in first drive shaft and second drive shaft, flat belt winding dress is on the belt pulley, integral key shaft one end rotary type is installed in inclined plane board one side, the other end and the driving roller fixed connection of bottom driving roller frame, first initiative sector gear, second initiative sector gear, third initiative sector gear all slidingtype install on the integral key shaft, drive gear fixed mounting is in the epaxial belt pulley one side of second drive, and can mesh with first initiative sector gear, second initiative sector gear and third initiative sector gear mutually.

In one embodiment, the limiting assembly comprises a guide frame, a limiting sleeve and a third compression spring, the guide frame is fixedly installed on one side of the inclined plane plate, the limiting sleeve is slidably installed on the guide frame and can be in contact with the spline shaft, one end of the third compression spring is fixedly installed on the guide frame, the other end of the third compression spring is fixedly connected with the limiting sleeve, and the limiting sleeve penetrates through the third compression spring.

In one of them embodiment, still including rectangular board, guide frame, fly leaf, reset spring, broach, thread bush and rotatory push pedal, the rectangular board fixed mounting is in footstock one side, and is a plurality of guide frame fixed mounting is on the rectangular board, the fly leaf slidable type is installed on the guide frame, reset spring one end fixed mounting is on the fly leaf, and the other end and guide frame fixed connection are a plurality of broach fixed mounting is in fly leaf one side, and with cut sword one side contact, thread bush fixed mounting is in cutting sword middle part, rotatory push pedal rotary type is installed on the thread bush, and rotatory push pedal can contact with the broach.

The invention has the beneficial effects that: 1. the aluminum coil flattening assembly provided by the invention can enable the top transmission roller frame to rotate anticlockwise when the bottom transmission roller frame rotates clockwise, so that an aluminum coil is continuously conveyed rightwards, and the top transmission roller frame slides downwards on the guide rod under the pressure action of the first compression spring, so that the aluminum coil which can be bent is continuously pressed by pressure in the conveying process; the aluminum roll cutting length adjusting assembly and the limiting assembly can fix different sector gears in the limiting sleeve through sliding the limiting sleeve and the sector gears, so that the different sector gears cooperate with the aluminum roll cutting length adjusting assembly to work to cut the aluminum roll into aluminum plates with different lengths, and the device can adjust the cutting length of the aluminum roll; can adjust the contact of rotatory push pedal and long sword through rotating rotatory push pedal for can carry out the fritter to aluminum plate and cut when rotatory push pedal contacts with long sword, cut into four little aluminum plates with a big aluminum plate, realize cutting aluminum plate's small dimension.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a third perspective view of the present invention.

Fig. 4 is a schematic perspective view of an aluminum coil flattening assembly according to the present invention.

FIG. 5 is a schematic view of a first partial body structure according to the present invention.

FIG. 6 is a schematic view of a second partial body structure according to the present invention.

Fig. 7 is a perspective view of a third embodiment of the present invention.

Fig. 8 is a perspective view of a fourth embodiment of the present invention.

Labeled as: 1. a bottom drive roll stand, 2, a guide bar, 3, a top mount, 4, an aluminum coil flattening assembly, 401, a top drive roll stand, 402, a first compression spring, 403, a meshing gear, 404, a sprocket, 405, a chain, 5, an aluminum coil cutting length adjustment assembly, 501, a top plate, 502, a guide bar, 503, a cutting knife, 504, a second compression spring, 505, a ramp plate, 506, a first drive shaft, 507, an overrunning clutch, 508, a driven sector gear, 509, a rack, 5010, a second drive shaft, 5011, a pulley, 5012, a flat belt, 5013, a spline shaft, 5014, a first drive sector gear, 5015, a second drive sector gear, 5016, a third drive sector gear, 5017, a spline shaft, 8, a long plate, 9, a guide frame, 10, a movable plate, 11. the device comprises a return spring 12, a long knife 13, a threaded sleeve 14 and a rotary push plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

An aluminum coil uncoiling flat machine capable of adjusting cutting length based on production requirements is shown in figures 1-8 and comprises a bottom transmission roller frame 1, guide rods 2, a top seat 3, an aluminum coil flattening component 4, an aluminum coil cutting length adjusting component 5, a limiting component 6 and a guide wheel frame 7, wherein the four guide rods 2 are fixedly arranged on two sides of the bottom transmission roller frame 1 and symmetrically arranged, the top seat 3 is fixedly arranged on one side of the bottom transmission roller frame 1, the aluminum coil flattening component 4 capable of conveying and flattening aluminum coils is arranged on the bottom transmission roller frame 1 and connected with the guide rods 2, the aluminum coil cutting length adjusting component 5 capable of cutting the aluminum coils into different lengths according to requirements is arranged on the top seat 3 and connected with the bottom transmission roller frame 1, the limiting component 6 capable of limiting sliding of limiting sector gears is arranged on one side of the aluminum coil cutting length adjusting component 5, and the guide wheel frame 7 for guiding the conveying of the aluminum coil is fixedly arranged on the left side of the aluminum coil flattening assembly 4.

Specifically, the aluminum coil flattening assembly 4 capable of conveying and flattening aluminum coils comprises a top transmission roller frame 401, a first compression spring 402, an engaging gear 403, a chain wheel 404 and a chain 405, the top driving roller frame 401 capable of flattening the aluminum coil is slidably mounted on the guide bar 2, one end of the first compression spring 402 is fixedly arranged on the top transmission roller frame 401, the other end is fixedly connected with the guide rod 2, and the guide bar 2 passes through the first compression spring 402, fourteen meshing gears 403 are fixedly arranged at one end of the transmission rollers of the top transmission roller frame 401 and the bottom transmission roller frame 1, and the meshing gear 403 of the top transmission roller frame 401 is meshed with the corresponding meshing gear 403 of the bottom transmission roller frame 1, seven chain wheels 404 are fixedly arranged at the right end of the transmission roller of the bottom transmission roller frame 1, and the chain 405 is wound on the chain wheels 404 and can drive the chain wheels to rotate.

Specifically, the aluminum roll cutting length adjusting assembly 5 capable of cutting the aluminum roll into different lengths according to requirements comprises a top plate 501, a guide rod 502, a cutting knife 503, a second compression spring 504, a bevel plate 505, a first driving shaft 506, an overrunning clutch 507, a driven sector gear 508, a rack 509, a second driving shaft 5010, a belt pulley 5011, a flat belt 5012, a spline shaft 5013, a first driving sector gear 5014, a second driving sector gear 5015, a third driving sector gear 5016 and a driving gear 5017, wherein the two top plates 501 are respectively and fixedly installed on two sides of the top base 3, the guide rod 502 is fixedly installed on the top plate 501, the top plate 501 and the guide rod 502 are located on two sides of the top base 3 and symmetrically arranged, two ends of the cutting knife 503 for cutting the aluminum plate are slidably installed on the guide rod 502, one end of the second compression spring 504 is fixedly installed on the cutting knife 503, and the other end of the second compression spring is fixedly connected with one end of the guide rod 502, and the guide rod 502 passes through the second compression bullet, the bevel board 505 is fixedly installed on the top plate 501 on the right side of the top seat by means of screws, the first driving shaft 506 is rotatably installed on the upper portion of the bevel board 505, the one-way rotation overrunning clutch 507 is fixedly installed at the left end of the first driving shaft 506, the driven sector gear 508 is fixedly installed at the left side of the overrunning clutch 507, the rack 509 is fixedly installed at the right end of the cutting knife 503 and can be engaged with the driven sector gear 508, the second driving shaft 5010 is rotatably installed at the lower portion of the bevel board 505, two pulleys 5011 are respectively fixedly installed on the first driving shaft 506 and the second driving shaft 5010, the flat belt 5012 is wound on the pulley 5011, the right end of the spline 5013 is installed on one side of the bevel board 505 by means of a bearing, the other end is fixedly connected with the driving roller of the bottom driving roller frame 1, the spline 5013 is located between the bevel board 505 and the bottom driving roller frame 1, the first driving sector gear 5014, the second driving sector gear 5015 and the third driving sector gear 5016 are all slidably mounted on the spline shaft 5013, the first driving sector gear 5014, the second driving sector gear 5015 and the third driving sector gear 5016 can move left and right on the spline shaft 5013 to adjust the positions of the first driving sector gear 5014, the second driving sector gear 5015 and the third driving sector gear 5016 to be suitable for cutting different lengths of aluminum coils, and the intermittently rotating driving gear 5017 is fixedly mounted on the left side of the belt pulley 5011 on the second driving shaft 5010 and can be meshed with the first driving sector gear 5014, the second driving sector gear 5015 and the third driving sector gear 5016.

Specifically, the limiting assembly 6 capable of limiting sliding of the sector gear comprises a guide frame 601, a limiting sleeve 603 and a third compression spring 602, wherein the guide frame 601 is fixedly installed on the lower side surface of the inclined plane plate 505, the limiting sleeve 603 is slidably installed on the guide frame 601 and can be in contact with the spline shaft 5013, one end of the third compression spring 602 is fixedly installed on the guide frame 601, the other end of the third compression spring is fixedly connected with the limiting sleeve 603, and the limiting sleeve 603 penetrates through the third compression spring 602.

Before the device is used for cutting the aluminum coil, firstly, a worker slides the top transmission roller frame 401 upwards, puts one end of the aluminum coil between the bottom transmission roller frame 1 and the top transmission roller frame 401, and places the aluminum coil below the guide wheel frame 7, so that a roller of the guide wheel frame 7 rotates to pull the aluminum coil to be unfolded when the aluminum coil is conveyed.

When the aluminum coil is placed, the power of the device is externally connected, the worker starts the external power to enable the driving roller on the bottom driving roller frame 1 to rotate clockwise to drive the chain wheel 404 on the driving roller to rotate to drive the chain 405 to drive rightwards, thereby driving the other chain wheels 404 on the right to rotate clockwise, causing all the driving rollers on the bottom driving roller frame 1 to rotate clockwise, driving the meshing gear 403 on the top driving roller frame 401 meshed with the meshing gear 403 on the bottom driving roller frame 1 to rotate anticlockwise, thereby driving the driving roller of the top driving roller frame 401 to rotate anticlockwise, transmitting the aluminum coil between the bottom driving roller frame 1 and the top driving roller frame 401 to the right, and the bottom transmission roller frame 1 and the top transmission roller frame 401 can flatten the aluminum coil while transmitting the aluminum coil.

When the driving roller on the bottom driving roller frame 1 rotates clockwise, the spline shaft 5013 fixedly connected with the driving roller on the bottom driving roller frame 1 is driven to rotate clockwise, so as to drive the sector gear on the spline shaft 5013 to rotate, if the third driving sector gear 5016 is limited on the spline shaft 5013 in the middle of the limiting sleeve 603 by the limiting sleeve 603, the spline shaft 5013 rotates clockwise to drive the third driving sector gear 5016 to rotate clockwise, the driving gear 5017 engaged with the third driving sector gear 5016 is driven to rotate counterclockwise, so as to drive the belt pulley 5011 to rotate counterclockwise, so that the flat belt 5012 drives the upper belt pulley 5011 and the first driving shaft 506 to rotate counterclockwise, so as to drive the overrunning clutch 507 and the driven sector gear 508 to rotate counterclockwise, so that the driven sector gear 508 moves downwards towards the engaged rack 509, the cutting knife 503 is driven to move downwards, so that the cutting knife 503 moves downwards onto the top plate 501 to cut the aluminum roll, when the driven sector gear 508 rotates to be not engaged with the rack 509, the second compression spring 504 is restored to move the cutting blade 503 and the rack 509 upward to return.

When the cutting length of the aluminum coil needs to be adjusted, the limiting sleeve 603 slides downwards, the corresponding sector gear slides to the position right above the limiting sleeve 603 according to the cutting length requirement, the limiting sleeve 603 is loosened, the third compression spring 602 resets to drive the limiting sleeve 603 to return to limit the sector gear to move, and the sector gear can be meshed with the driving gear 5017. When the sector gear is engaged with the drive gear 5017, the sector gear rotates to drive the drive gear 5017 to rotate, when the sector gear is not engaged with the drive gear 5017, the drive gear 5017 stops rotating, and under the effect of the counterclockwise one-way rotation of the overrunning clutch 507, the driven sector gear 508 engaged with the rack 509 stops rotating without being reset by the second compression spring 504. When the sector gear rotates for a period and is meshed with the driving gear 5017 again, the driving gear 5017, the belt pulley 5011 and the driven sector gear 508 are driven to rotate again, so that the rack 509 and the cutting knife 503 are driven to move downwards, the sector gear intermittently drives the driving gear 5017 to rotate, a first driving sector gear 5014 with three teeth rotates for ten weeks to drive the driving gear 5017 and the driven sector gear 508 to rotate for one week, the cutting knife 503 is driven to move downwards to cut the aluminum roll, a second driving sector gear 5015 with five teeth rotates for five weeks to drive the driving gear 5017 and the driven sector gear 508 to rotate for one week, the cutting knife 503 is driven to move downwards to cut the aluminum roll, and a third driving sector gear 5016 with ten teeth rotates for three weeks to drive the driving gear 5017 and the driven sector gear 508 to rotate for one week, so that the cutting knife 503 is driven to move downwards to cut the aluminum roll. The aluminum plate cut by the cutting blade 503 is made the shortest when the first active sector gear 5014 is used, the aluminum plate cut by the cutting blade 503 is made the longer when the second active sector gear 5015 is used, and the aluminum plate cut by the cutting blade 503 is made the longest when the first active sector gear 5014 is used.

Example two

On the basis of the first embodiment, as shown in fig. 1-8, the device further comprises a long plate 8, a guide frame 9, a movable plate 10, a return spring 11, a long knife 12, a threaded sleeve 13 and a rotary push plate 14, the long plate 8 for placing the cut aluminum plate is fixedly arranged on the lower side surface of the top seat 3, the six guide frames 9 are fixedly arranged on the long plate 8, the movable plate 10 is slidably mounted on the guide frame 9, one end of the return spring 11 is fixedly mounted on the movable plate 10, the other end of the return spring is fixedly connected with the guide frame 9, the three long knives 12 capable of cutting the aluminum plate are fixedly mounted on one side of the movable plate 10, and contacts with one side of the cutting blade 503, the movable plate 10 can drive the long blade 12 to slide up and down, threaded sleeve 13 fixed mounting cuts the sword 503 middle part, rotatory push pedal 14 rotary type is installed on threaded sleeve 13, and rotatory push pedal 14 can contact with long sword 12.

When the aluminum plate that needs cut carries out the fritter and cuts, rotate rotatory push pedal 14 and make rotatory push pedal 14 and long sword 12 contact, when cutting sword 503 downstream, drive long sword 12 and fly leaf 10 downstream for long sword 12 cuts aluminum plate when cutting sword 503 cuts aluminum plate and cuts into slices, cuts aluminum plate into four, and cuts sword 503 upward movement and drive long sword 12 and fly leaf 10 upward movement return. When the aluminum plate that need not cut carries out the fritter and cuts, rotate rotatory push pedal 14 to not contacting with long sword 12, be favorable to satisfying the demand that cuts aluminum plate small dimension.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. An aluminum coil uncoiling flat machine capable of adjusting cutting length based on production requirements is characterized by comprising a bottom transmission roller frame (1), guide rods (2), a top seat (3), an aluminum coil flattening assembly (4), an aluminum coil cutting length adjusting assembly (5), a limiting assembly (6) and a guide wheel frame (7), wherein the guide rods (2) are fixedly arranged on two sides of the bottom transmission roller frame (1) and are symmetrically arranged, the top seat (3) is fixedly arranged on one side of the bottom transmission roller frame (1), the aluminum coil flattening component (4) is arranged on the bottom transmission roller frame (1) and is connected with the guide rod (2), the aluminum coil cutting length adjusting component (5) is arranged on the top seat (3) and is connected with the bottom transmission roller frame (1), the limiting component (6) is arranged on one side of the aluminum coil cutting length adjusting component (5), the guide wheel carrier (7) is fixedly arranged on one side of the aluminum coil flattening component (4); the aluminum coil flattening component (4) comprises a top transmission roller frame (401), a first compression spring (402), an engaging gear (403), a chain wheel (404) and a chain (405), the top transmission roller frame (401) is slidably mounted on a guide rod (2), one end of the first compression spring (402) is fixedly mounted on the top transmission roller frame (401), the other end of the first compression spring is fixedly connected with the guide rod (2), the guide rod (2) penetrates through the first compression spring (402), the engaging gear (403) is fixedly mounted at one end of a transmission roller of the top transmission roller frame (401) and one end of a transmission roller of the bottom transmission roller frame (1), the engaging gear (403) of the top transmission roller frame (401) is meshed with the engaging gear (403) of the corresponding bottom transmission roller frame (1), and the chain wheel (404) is fixedly mounted at one end of the transmission roller of the bottom transmission roller frame (1), the chain (405) is wound on the chain wheel (404); the aluminum coil cutting length adjusting assembly (5) comprises a top plate (501), a guide rod (502), a cutting knife (503), a second compression spring (504), an inclined plane plate (505), a first driving shaft (506), an overrunning clutch (507), a driven sector gear (508), a rack (509), a second driving shaft (5010), a belt pulley (5011), a flat belt (5012), a spline shaft (5013), a first driving sector gear (5014), a second driving sector gear (5015), a third driving sector gear (5016) and a driving gear (5017), wherein the top plate (501) is fixedly arranged on two sides of a top seat (3) respectively, the guide rod (502) is fixedly arranged on the top plate (501), two ends of the cutting knife (503) are slidably arranged on the guide rod (502), one end of the second compression spring (504) is fixedly arranged on the cutting knife (503), and the other end of the second compression spring is fixedly connected with one end of the guide rod (502), and the guide arm (502) passes the second compression bullet, the bevel board (505) fixed mounting is in top board (501) one side, the first drive shaft (506) rotary type is installed on the bevel board (505) upper portion, freewheel clutch (507) fixed mounting is in first drive shaft (506) one end, driven sector gear (508) fixed mounting is in freewheel clutch (507) one side, rack (509) fixed mounting is in cutting sword (503) one end, and can mesh with driven sector gear (508), second drive shaft (5010) rotary type is installed in the bevel board (505) lower part, two belt pulleys (5011) are respectively fixed mounting on first drive shaft (506) and second drive shaft (5010), flat belt (5012) is wound on belt pulley (5011), integral key shaft (5013) one end rotary type is installed in bevel board (505) one side, the other end and the driving roller fixed connection of bottom driving roller frame (1), the first driving sector gear (5014), the second driving sector gear (5015) and the third driving sector gear (5016) are all arranged on the spline shaft (5013) in a sliding mode, the driving gear (5017) is fixedly arranged on one side of a belt pulley (5011) on the second driving shaft (5010) and can be meshed with the first driving sector gear (5014), the second driving sector gear (5015) and the third driving sector gear (5016); the limiting assembly (6) comprises a guide frame (601), a limiting sleeve (603) and a third compression spring (602), the guide frame (601) is fixedly installed on one side of the inclined plane plate (505), the limiting sleeve (603) is installed on the guide frame (601) in a sliding mode and can be in contact with a spline shaft (5013), one end of the third compression spring (602) is fixedly installed on the guide frame (601), the other end of the third compression spring is fixedly connected with the limiting sleeve (603), and the limiting sleeve (603) penetrates through the third compression spring (602); still including rectangular plate (8), guide frame (9), fly leaf (10), reset spring (11), spreader (12), thread bush (13) and rotatory push pedal (14), long plate (8) fixed mounting is in footstock (3) one side, and is a plurality of guide frame (9) fixed mounting is on long plate (8), fly leaf (10) slidable type is installed on guide frame (9), reset spring (11) one end fixed mounting is on fly leaf (10), and the other end is with guide frame (9) fixed connection, and is a plurality of spreader (12) fixed mounting is in fly leaf (10) one side, and with cut sword (503) one side contact, thread bush (13) fixed mounting is in cutting sword (503) middle part, rotatory push pedal (14) rotary type is installed on thread bush (13), and rotatory push pedal (14) can contact with spreader (12).