CN112122742B

CN112122742B - Automatic repairing device for roll surface of cement roll squeezer

Info

Publication number: CN112122742B
Application number: CN202010952181.3A
Authority: CN
Inventors: 谢家锡
Original assignee: Guilin South Cement Co ltd
Current assignee: Guilin South Cement Co.,Ltd.
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-06-08
Anticipated expiration: 2040-09-11
Also published as: CN112122742A

Abstract

The invention discloses an automatic repairing device for a roll surface of a cement roll squeezer, which comprises a machine body, wherein a working cavity with an upward opening is arranged in the machine body, the front and the back of the working cavity are symmetrically provided with supporting chutes with upward openings, guide sliding rods are fixedly arranged between the centers of the left and the right end walls of the supporting chutes, a supporting slide bar arranged in the supporting slide groove in a sliding manner is arranged on the outer circular surface of the guide slide bar, a supporting plate is fixedly arranged between the upper sides of the end surfaces of the supporting slide bars, which are close to one end of the symmetry center, the U-shaped sliding block is arranged on the outer end face of the supporting plate in a sliding manner, the roller system of the roller press can be directly repaired on the periphery of the roller press by disassembling the roller system of the roller press, the roller press does not need to be transported to a special repair unit for maintenance, the cost is saved, the downtime is relatively short, meanwhile, the roller surface damage detection and maintenance device can automatically detect and maintain roller surface damage without manual operation.

Description

Automatic repairing device for roll surface of cement roll squeezer

Technical Field

The invention relates to the technical field of surface repair of electromechanical products, in particular to an automatic repair device for a roll surface of a cement roll squeezer.

Background

The roller press is named as a calender and a double-roller machine, is novel cement energy-saving grinding equipment developed in the middle of eighties, has the functions of replacing a ball mill with high energy consumption and low efficiency and reducing steel consumption and noise, and consists of two extrusion rollers which synchronously rotate in opposite directions, wherein one extrusion roller is a fixed roller, the other extrusion roller is a fixed roller, the two roller surfaces of the roller press are damaged due to long-time extrusion work, the roller surfaces are easy to generate cracks, pits and other phenomena.

Disclosure of Invention

In order to solve the problems, the embodiment designs an automatic repairing device for the roll surface of the cement roll squeezer, which comprises a machine body, wherein a working cavity with an upward opening is arranged in the machine body, supporting sliding grooves with an upward opening are symmetrically arranged in the front and the back of the working cavity, a guide sliding rod is fixedly arranged between the centers of the left and right end walls of the supporting sliding grooves, a supporting sliding rod which is slidably arranged in the supporting sliding grooves is arranged on the outer circular surface of the guide sliding rod, a supporting plate is fixedly arranged between the upper sides of the end surfaces of the supporting sliding rod, which are close to one end of the symmetrical center, a U-shaped sliding block is slidably arranged on the outer end surface of the supporting plate, a repairing device is arranged at the lower end of the U-shaped sliding block, the repairing device comprises a connecting plate which is fixedly arranged on the lower end surface of the U-shaped sliding block, a repairing sliding groove is arranged on the rear, the front side of the repairing chute is fixedly provided with a second motor, the rear end of the second motor is in power connection with a second power shaft extending to the repairing chute, the outer circular surface of the second power shaft is provided with a repairing slide block arranged in the repairing chute in a sliding manner, the lower end surface of the repairing slide block is fixedly provided with a slide block arranged in the slide groove in a sliding manner, the working chamber is bilaterally and symmetrically provided with slide grooves with upward openings and communicated with the working chamber, the right end of the right side slide groove is provided with a meshing chamber with an opening facing the right and communicated with the right side slide groove, the slide groove is internally provided with a roller shaft with a right end extending to the meshing chamber in a sliding manner, the front side of the working chamber is provided with a detection device capable of detecting cracks on the roller shaft so as to repair the cracks through the repairing device, and the lower side of the working chamber, the sliding plate cavity is internally provided with a cutting device, the cutting device can cut a crack into an inclined table when the crack is not repaired, and the roller surface is cut into a regular plane after the crack is repaired.

Preferably, the repairing device further comprises a connecting rod fixing block fixedly arranged on the front side of the lower end face of the connecting plate, a first connecting rod is hinged to the lower end of the connecting rod fixing block, a second connecting rod is hinged to the rear end of the first connecting rod, a fixing connecting block is hinged to the front end of the second connecting rod, a repairing plate is fixedly arranged on the lower end of the fixing connecting block, a third connecting rod is hinged to the lower end of the sliding block, the middle of the third connecting rod is rotatably connected with the first connecting rod, a fourth connecting rod is hinged to the front end of the third connecting rod, the middle of the fourth connecting rod is rotatably connected with the second connecting rod, a hinged sliding block slidably arranged on the rear side of the upper end face of the repairing plate is hinged to the rear end of the fourth connecting rod, an electrifying clamp holder is rotatably arranged on the front side of the repairing plate, a, the rotary block lower extreme rotates and is provided with and extends to repair the outer pivot of board, the fixed splint that can the centre gripping of pivot lower extreme, the rotary block front end slides and is provided with reserve welding rod.

Preferably, detection device locates including the cover the roller right-hand member just is located the gear lid of meshing intracavity, the meshing of gear lid front end is provided with the straight-teeth gear, the fixed closed piece that is provided with of meshing chamber right side the place ahead, meshing chamber right side the place ahead is provided with the sprocket chamber, straight-teeth gear axle center department is fixed to be provided with and extends to driven sprocket shaft in the sprocket chamber, the fixed driven sprocket that is provided with of driven sprocket shaft right-hand member, the fixed first motor that is provided with in sprocket chamber the place ahead left side, first motor right-hand member power is connected and is provided with and extends to first power shaft in the sprocket chamber, the fixed drive sprocket that is provided with of first power shaft right-hand member, drive sprocket with it is provided with the chain to connect between the.

Preferably, the front side of the working cavity is provided with a connecting sliding groove communicated with the working cavity, the rear side of the left side of the connecting sliding groove is provided with a detector cavity communicated with the working cavity and the connecting sliding groove, a detection chute communicated with the connecting chute is arranged at the front side of the connecting chute, a belt pulley cavity is arranged at the right side of the detection chute, the left end of the first motor is provided with a detection screw rod which penetrates through the belt pulley cavity and extends into the detection chute in a power connection way, a rotating shaft controller positioned between the belt pulley cavity and the first motor is arranged on the right side of the detection screw rod, a detection slide block which is arranged in the detection chute in a sliding way is arranged on the left side of the outer circular surface of the detection screw rod, the rear end face of the detection slide block is fixedly provided with a detection connecting block which is arranged on the upper end wall and the lower end wall of the connecting chute in a sliding manner, the rear end face of the detection connecting block is fixedly provided with a detector which is arranged in the detector cavity and the working cavity in a sliding mode.

Preferably, the cutting device comprises a driving belt pulley fixedly arranged on the detection screw rod and positioned in the belt pulley cavity, a belt is arranged on the outer circular surface of the driving belt pulley, a driven belt pulley connected with the belt is rotatably arranged on the rear side below the driving belt pulley, a bevel gear cavity is arranged on the left side below the belt pulley cavity, a bevel gear shaft extending into the bevel gear cavity is fixedly arranged at the axis of the driven belt pulley, a second bevel gear is fixedly arranged at the left end of the bevel gear shaft, a first bevel gear is meshed with the left side of the upper end of the second bevel gear, a right slider cavity communicated with the slider cavity is arranged above the bevel gear cavity, a right slider shaft extending into the right slider cavity is fixedly arranged at the upper end of the first bevel gear, and a right slider slidably arranged in the right slider cavity is arranged on the outer circular surface of the right slider shaft, the slider comprises a left slider cavity, a left slider shaft, a slider left end, an electric slide bar, a blade, a left slider shaft, a right slider, a left slider shaft, a right slider shaft, a left slider shaft, an electric slide bar and a blade, wherein the upper end of the electric slide bar is fixedly provided with the blade.

The invention has the beneficial effects that: the roller system of the roller press can be directly repaired on the periphery of the roller press by disassembling the roller system of the roller press, the roller system does not need to be transported to a special repair unit for maintenance, the cost is saved, the downtime is relatively short, meanwhile, the roller surface damage can be automatically detected and maintained without manual operation, the cutting device can cut a crack into an inclined platform when the crack is not repaired, the repairing device is convenient to repair, the roller surface can be cut into a regular plane after the repairing, a cutter does not need to be frequently changed, and the roller surface repairing device is convenient for an operator to use.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

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

Fig. 2 is a schematic view of the structure a-a in fig. 1.

FIG. 3 is a schematic diagram of B-B in FIG. 1.

Fig. 4 is an enlarged schematic view of C in fig. 1.

Fig. 5 is an enlarged schematic view of D in fig. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an automatic roller surface repairing device of a cement roller press, which comprises a machine body 11, wherein a working cavity 13 with an upward opening is arranged in the machine body 11, supporting sliding grooves 36 with upward openings are symmetrically arranged in the front and back of the working cavity 13, a guide sliding rod 37 is fixedly arranged between the centers of the left and right end walls of the supporting sliding grooves 36, a supporting sliding rod 35 which is slidably arranged in the supporting sliding groove 36 is arranged on the outer circular surface of the guide sliding rod 37, a supporting plate 34 is fixedly arranged between the upper sides of the end surfaces of the supporting sliding rod 35 close to one end of the symmetrical center, a U-shaped sliding block 69 is slidably arranged on the outer end surface of the supporting plate 34, a repairing device is arranged at the lower end of the U-shaped sliding block 69, the repairing device comprises a connecting plate 57 which is fixedly arranged on the lower end surface of the U-shaped sliding block 69, a repairing sliding groove 76 is arranged at the, the front side of the repairing chute 76 is fixedly provided with a second motor 74, the rear end of the second motor 74 is provided with a second power shaft 75 extending to the repairing chute 76 in a power connection manner, the outer circular surface of the second power shaft 75 is provided with a repairing slide block 45 arranged in the repairing chute 76 in a sliding manner, the lower end surface of the repairing slide block 45 is fixedly provided with a slide block 63 arranged in the slide groove 47 in a sliding manner, the working cavity 13 is bilaterally and symmetrically provided with a chute 12 with an upward opening and communicated with the working cavity 13, the right end of the right side chute 12 is provided with a meshing cavity 16 with an rightward opening and communicated with the right side chute 12, the chute 12 is internally provided with a roller shaft 14 with a right end extending to the meshing cavity 16 in a sliding manner, the front side of the working cavity 13 is provided with a detection device capable of detecting cracks on the roller shaft 14, so as to repair through, the lower side of the working cavity 13 is provided with a sliding plate cavity 25 communicated with the working cavity 13, a cutting device is arranged in the sliding plate cavity 25, the cutting device can cut a crack into an oblique table when the crack is not repaired, and the roller surface is cut into a regular plane after the crack is repaired.

Beneficially, the repairing device further comprises a connecting rod fixing block 70 fixedly arranged on the front side of the lower end face of the connecting plate 57, the lower end of the connecting rod fixing block 70 is hinged with a first connecting rod 58, the rear end of the first connecting rod 58 is hinged with a second connecting rod 59, the front end of the second connecting rod 59 is hinged with a fixed connecting block 68, the lower end of the fixed connecting block 68 is fixedly provided with the repairing plate 60, the lower end of the sliding block 63 is hinged with a third connecting rod 64, the middle of which is rotatably connected with the first connecting rod 58, the front end of the third connecting rod 64 is hinged with a fourth connecting rod 65, the middle of which is rotatably connected with the second connecting rod 59, the rear end of the fourth connecting rod 65 is hinged with a hinged sliding block 66 slidably arranged on the rear side of the upper end face of the repairing plate 60, the front side of the repairing plate 60 is rotatably provided with an electrified clamp 67, the fixed turning block 71 that is provided with in circular telegram holder 67 front side, turning block 71 lower extreme rotates to be provided with and extends to repair the outer pivot 73 of board 60, the fixed splint 61 that is provided with of pivot 73 lower extreme can the centre gripping welding rod 62, the sliding of turning block 71 front end is provided with reserve welding rod 72, turning block 71 with pivot 73 and splint 61 cooperation use can realize automatic transposition welding rod.

Beneficially, detection device is located including the cover roller 14 right-hand member and being located gear cover 15 in the meshing chamber 16, the meshing of gear cover 15 front end is provided with spur gear 49, meshing chamber 16 right-hand member is fixed to be provided with closing block 17, meshing chamber 16 right side the place ahead is provided with chain wheel chamber 52, spur gear 49 axle center department is fixed to be provided with and extends to driven sprocket shaft 51 in the chain wheel chamber 52, driven sprocket shaft 51 right-hand member is fixed to be provided with driven sprocket 50, chain wheel chamber 52 the place ahead left side is fixed to be provided with first motor 56, first motor 56 right-hand member power connection be provided with extend to first power shaft 55 in the chain wheel chamber 52, first power shaft 55 right-hand member is fixed to be provided with drive sprocket 54, drive sprocket 54 with connect between the driven sprocket 50 and be provided with chain 53.

Beneficially, a connecting chute 43 communicated with the working chamber 13 is arranged at the front side of the working chamber 13, a detector cavity 42 communicated with the working chamber 13 and the connecting chute 43 is arranged at the rear left side of the connecting chute 43, a detection chute 44 communicated with the connecting chute 43 is arranged at the front side of the connecting chute 43, a pulley cavity 21 is arranged at the right side of the detection chute 44, a detection screw 40 passing through the pulley cavity 21 and extending into the detection chute 44 is arranged at the left end of the first motor 56 in a power connection manner, a rotating shaft controller 48 positioned between the pulley cavity 21 and the first motor 56 is arranged at the right side of the detection screw 40, a detection slide block 39 slidably arranged in the detection chute 44 is arranged at the left side of the outer circular surface of the detection screw 40, and detection connecting blocks 41 slidably arranged at the upper and lower end walls of the connecting chute 43 are fixedly arranged at the rear end surface of the detection slide block 39, the rear end face of the detection connecting block 41 is fixedly provided with a detector 38 which is slidably arranged in the detector cavity 42 and the working cavity 13.

Beneficially, the cutting device includes a driving pulley 46 fixedly disposed on the detection screw 40 and located in the pulley cavity 21, a belt 32 is disposed on an outer circumferential surface of the driving pulley 46, a driven pulley 22 connected by the belt 32 is rotatably disposed on a rear side below the driving pulley 46, a bevel gear cavity 28 is disposed on a left side below the pulley cavity 21, a bevel gear shaft 31 extending into the bevel gear cavity 28 is fixedly disposed at an axis of the driven pulley 22, a second bevel gear 30 is fixedly disposed at a left end of the bevel gear shaft 31, a first bevel gear 29 is engaged with a left side of an upper end of the second bevel gear 30, a right slider cavity 18 communicating with the slider cavity 25 is disposed above the bevel gear cavity 28, a right slider shaft 19 extending into the right slider cavity 18 is fixedly disposed at an upper end of the first bevel gear 29, be provided with on the outer disc of right side slider axle 19 slide set up in right slider 20 in the right slider chamber 18, right side slider 20 left end fixed be provided with slide from top to bottom set up in slide 33 in the slider chamber 25, slider chamber 25 left side be provided with left slider chamber 26 that slider chamber 25 is linked together, the fixed left slider axle 77 that is provided with between left slider chamber 26 upper and lower end wall center department, slide 33 left end fixed be provided with the cover locate left side slider axle 77 and slide set up in left slider 27 in the left slider chamber 26, slide 33 up end slides and is provided with electric slide bar 24, the fixed blade 23 that is provided with in electric slide bar 24 upper end.

The use steps herein are described in detail below with reference to fig. 1-5:

in the initial state, the slide plate 33 is located at the lowermost side of the slide plate cavity 25, the right slide block 20 is located at the lowermost side of the right slide block cavity 18, the detector 38 is located at the leftmost side of the detector cavity 42, the detection slide block 39 is located at the leftmost side of the detection chute 44, and the repair slide block 45 is located at the rearmost end of the repair chute 76.

In operation, the first motor 56 is started, so that the rotation of the detection screw 40 is controlled by the rotation shaft controller 48, and the detection slider 39 is driven to slide to the right, and the detector 38 is driven to move to the right by the detection connecting block 41, and the surface of the roller 14 is scanned for cracks, and the detection screw 40 is rotated to drive the driving pulley 46 to rotate, and the driven pulley 22 is driven to rotate by the belt 32, and the bevel gear shaft 31 is driven to rotate, and the second bevel gear 30 is driven to rotate, and the first bevel gear 29 is driven to rotate, and the right slider shaft 19 is driven to rotate, and the right slider 20 is driven to move upwards, and the slide plate 33 is driven to move upwards, so that the electric slide bar 24 and the blade 23 are driven to move upwards, and the cracked part of the roller 14 is primarily cut, so that the repairing device can perform electric welding, and when, the rotation of the detecting screw 40 is stopped by the control of the rotation shaft controller 48, and the power mechanism is stopped, at this time, the first power shaft 55 starts to rotate, so as to drive the driving sprocket 54 to rotate, so as to drive the driven sprocket 50 to rotate by the chain 53, so as to drive the driven sprocket shaft 51 to rotate, so as to drive the spur gear 49 to rotate, so as to drive the roll shaft 14 to rotate by the engagement rotation of the spur gear 49 and the gear cover 15, and the roll shaft 14 can be electrically welded and repaired without the movement operation of the repairing device, when the repairing device is operated, the second motor 74 is started, so as to drive the second power shaft 75 to rotate, so as to drive the repairing slider 45 to move forward, so as to drive the slide block 63 to move forward, so as to drive the hinge slider 66 to move forward by the third connecting rod 64 and the fourth connecting rod 65, so as to drive the repairing plate 60 to move, thereby driving the welding rod 62 to rotate and repairing the crack of the roll shaft 14.

After the use, the power-on clamper 67 stops rotating, the second motor 74 rotates reversely to drive the second power shaft 75 to rotate reversely, so as to drive the repairing slider 45 to move to the initial position, at this time, the first power shaft 55 stops rotating, the rotating shaft controller 48 controls the detecting screw 40 to rotate reversely, so as to drive the detecting slider 39 to move to the initial position, so as to drive the detector 38 to move to the initial position through the detecting connecting block 41, and further drive the right slider 20 and the sliding plate 33 to move to the initial position through the power mechanism.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic repairing device for a roll surface of a cement roller press comprises a machine body, wherein a working cavity with an upward opening is arranged in the machine body, supporting sliding grooves with an upward opening are symmetrically arranged in the front and the back of the working cavity, a guide sliding rod is fixedly arranged between the centers of the left and right end walls of the supporting sliding grooves, a supporting sliding rod arranged in the supporting sliding grooves in a sliding manner is arranged on the outer circular surface of the guide sliding rod, a supporting plate is fixedly arranged between the upper sides of the end surfaces of the supporting sliding rod, which are close to one end of the symmetrical center, a U-shaped sliding block is arranged on the outer end surface of the supporting plate in a sliding manner, a repairing device is arranged at the lower end of the U-shaped sliding block and comprises a connecting plate fixedly arranged on the lower end surface of the U-shaped sliding block, a repairing sliding groove is arranged on the rear side of the, the rear end of the second motor is connected with a second power shaft extending to the repairing chute in a power connection manner, a repairing slide block arranged in the repairing chute in a sliding manner is arranged on the outer circular surface of the second power shaft, a slide block arranged in the slide groove in a sliding manner is fixedly arranged on the lower end surface of the repairing slide block, slide grooves with upward openings and communicated with the working cavity are symmetrically arranged on the left and right of the working cavity, a meshing cavity with an upward opening and communicated with the slide groove on the right side is arranged at the right end of the slide groove, a roller shaft with a right end extending to the inside of the meshing cavity is arranged in the slide groove in a sliding manner, a detection device is arranged on the front side of the working cavity and can detect cracks on the roller shaft, so that the cracks can be repaired by the repairing device, a sliding plate cavity communicated with the working cavity is arranged on the, the cutting device can cut the crack into an inclined table when the crack is not repaired, and cut the roll surface into a regular plane after the crack is repaired.

2. The automatic repairing device for the roll surface of the cement rolling machine as claimed in claim 1, characterized in that: the repairing device also comprises a connecting rod fixing block fixedly arranged on the front side of the lower end face of the connecting plate, a first connecting rod is hinged to the lower end of the connecting rod fixing block, a second connecting rod is hinged to the rear end of the first connecting rod, a fixed connecting block is hinged to the front end of the second connecting rod, a repairing plate is fixedly arranged on the lower end of the fixed connecting block, a third connecting rod is hinged to the lower end of the sliding block, the middle of the third connecting rod is rotatably connected with the first connecting rod, a fourth connecting rod is hinged to the front end of the third connecting rod, the middle of the fourth connecting rod is rotatably connected with the second connecting rod, a hinged sliding block is hinged to the rear end of the fourth connecting rod and slidably arranged on the rear side of the upper end face of the repairing plate, an electrified clamp holder is rotatably arranged on the front side of the repairing plate, the rotary block lower extreme rotates and is provided with and extends to repair the outer pivot of board, the fixed splint that can the centre gripping of pivot lower extreme, the rotary block front end slides and is provided with reserve welding rod.

3. The automatic repairing device for the roll surface of the cement rolling machine as claimed in claim 2, characterized in that: detection device locates including the cover the roller right-hand member just is located the gear lid of meshing intracavity, the meshing of gear lid front end is provided with the straight-teeth gear, the fixed closed piece that is provided with of meshing chamber right-hand member, meshing chamber right side the place ahead is provided with the chain chamber, straight-teeth gear axle center department is fixed to be provided with and extends to the driven sprocket axle of chain wheel intracavity, the fixed driven sprocket that is provided with of driven sprocket axle right-hand member, the fixed first motor that is provided with in chain chamber the place ahead left side, first motor right-hand member power connection be provided with extend to the first power shaft of chain wheel intracavity, the fixed drive sprocket that is provided with of first power shaft right-hand member, drive sprocket with it is provided with the chain to connect between the.

4. The automatic repairing device for the roll surface of the cement rolling machine as claimed in claim 3, characterized in that: the front side of the working cavity is provided with a connecting chute communicated with the working cavity, the rear side of the left side of the connecting chute is provided with a detector cavity communicated with the working cavity and the connecting chute, a detection chute communicated with the connecting chute is arranged at the front side of the connecting chute, a belt pulley cavity is arranged at the right side of the detection chute, the left end of the first motor is provided with a detection screw rod which penetrates through the belt pulley cavity and extends into the detection chute in a power connection way, a rotating shaft controller positioned between the belt pulley cavity and the first motor is arranged on the right side of the detection screw rod, a detection slide block which is arranged in the detection chute in a sliding way is arranged on the left side of the outer circular surface of the detection screw rod, the rear end face of the detection slide block is fixedly provided with a detection connecting block which is arranged on the upper end wall and the lower end wall of the connecting chute in a sliding manner, the rear end face of the detection connecting block is fixedly provided with a detector which is arranged in the detector cavity and the working cavity in a sliding mode.

5. The automatic repairing device for the roll surface of the cement rolling machine as claimed in claim 4, characterized in that: the cutting device comprises a driving belt pulley which is fixedly arranged on the detection screw rod and is positioned in the belt pulley cavity, a belt is arranged on the outer circular surface of the driving belt pulley, a driven belt pulley which is connected through the belt is arranged on the rear side below the driving belt pulley in a rotating manner, a bevel gear cavity is arranged on the left side below the belt pulley cavity, a bevel gear shaft which extends into the bevel gear cavity is fixedly arranged at the axle center of the driven belt pulley, a second bevel gear is fixedly arranged at the left end of the bevel gear shaft, a first bevel gear is meshed with the left side of the upper end of the second bevel gear, a right slide block cavity which is communicated with the slide block cavity is arranged above the bevel gear cavity, a right slide block shaft which extends into the right slide block cavity is fixedly arranged at the upper end of the first bevel gear, and a right slide block which is, the slider comprises a left slider cavity, a left slider shaft, a slider left end, an electric slide bar, a blade, a left slider shaft, a right slider, a left slider shaft, a right slider shaft, a left slider shaft, an electric slide bar and a blade, wherein the upper end of the electric slide bar is fixedly provided with the blade.