CN111716474A

CN111716474A - Thick bamboo pole segmentation section cutting slitter

Info

Publication number: CN111716474A
Application number: CN202010627638.3A
Authority: CN
Inventors: 彭军民
Original assignee: Taizhou Xin'an Technology Co ltd
Current assignee: Taizhou Xin'an Technology Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-09-29

Abstract

The invention discloses a thick bamboo pole section slicing and slitting machine, which comprises a device base, wherein a section cutting machine body is fixedly arranged at the position, close to the front, of the upper side end face; according to the bamboo cutting device, the thick bamboo poles can be conveyed into the conveying cavity through the conveying belt, the whole thick bamboo pole is cut into a fixed length in a segmented mode through the matching of the trigger sensor on the left side wall of the conveying cavity and the segmented cutting device, the segmented and cut thick bamboo pole is pushed onto the slitting bearing table through the pushing device, and the thick bamboo pole on the slitting bearing table is cut into a thin strip shape through the matching of the pushing disc which reciprocates left and right and the Mi-shaped slitting blade.

Description

Thick bamboo pole segmentation section cutting slitter

Technical Field

The invention relates to the technical field related to a new process, in particular to a thick bamboo pole sectional slicing and slitting machine.

Background

Bamboo is as the material that the plasticity is high, all has high value of utilization in house, building and daily necessities field, in many bamboo article preparation, need cut into slender bamboo strip with thick bamboo pole, traditional cutting mode is the manual work mostly and cuts with the help of the cutter, this kind of mode is not only efficient extremely low, because the characteristic of bamboo itself, easy fish tail personnel's arm, and, the bamboo strip difference of manual cutting is great, the probability that appears the wastrel is higher, causes certain influence to follow-up processing use.

Disclosure of Invention

The invention aims to provide a thick bamboo pole section slicing and slitting machine which is used for overcoming the defects in the prior art.

The invention relates to a thick bamboo rod sectional slicing and slitting machine, which comprises a device base, wherein a sectional cutting machine body is fixedly arranged at the position, close to the front, of the upper side end face of the device base, a cutting cavity is formed in the right side end face of the sectional cutting machine body, a sectional cutting device capable of cutting the whole thick bamboo rod in a sectional manner is arranged in the cutting cavity, a conveying cavity is communicated and arranged in the left side wall of the cutting cavity, a conveying belt capable of conveying the thick bamboo rod leftwards is rotatably arranged between the front and rear walls of the conveying cavity, a diversion cover is fixedly arranged on the rear side end face of the sectional cutting machine body, a diversion cavity is communicated and arranged in the lower side end face of the diversion cover and the rear side wall of the conveying cavity, a strip-shaped cutting base is fixedly arranged on the upper side end face of the device base below the diversion cavity, a cutter frame ring is fixedly arranged at the position, close to the right side end face of the strip-shaped cutting, be located meter font slitting blade right side bar cutting base up end sets firmly the slitting plummer that can slide and place thick bamboo pole, be equipped with in the lateral wall before the transport chamber can with thick bamboo pole after the end cutting of one-tenth on the conveyer belt pushes away the thrust unit on the slitting plummer, the last side end face slidable mounting of bar cutting base has the slitting device that can control reciprocal circulation promotion thick bamboo pole and carry out the cutting.

On the basis of the technical scheme, a conveying motor is fixedly arranged in the front side wall of the conveying cavity close to the left position, the rear end of the conveying motor is provided with a rotating shaft which is rotatably arranged in the rear side wall of the belt wheel through a bearing, the rotating shaft is positioned on the right side of the rotating shaft, the conveying cavity is internally provided with a second rotating shaft which corresponds to the first rotating shaft through a second bearing, and the second rotating shaft is connected with the conveying belt through the first rotating shaft.

On the basis of the technical scheme, segmentation cutting device is including locating screw thread lift chamber in the lateral wall before the cutting chamber, set firmly in the diapire in screw thread lift chamber, the upper end be equipped with and rotate through No. three bearings and install threaded rod in the screw thread lift chamber roof, threaded connection has on the pole body of threaded rod can the screw thread slide of up-and-down motion in the cutting chamber, the screw thread slide is located one end fixed mounting in the cutting chamber has the cutting motor, cutting blade is installed to the left end of cutting motor, the roof in cutting chamber set firmly with cutting blade complex cutting frame, be equipped with on the left side wall in transport chamber with electric connection's trigger inductor.

On the basis of the technical scheme, the pushing device comprises a pushing block groove which is correspondingly arranged in the front side wall of the conveying cavity from left to right, a pushing rod groove is formed in the front side wall of the pushing block groove corresponding from left to right and is communicated with the front side end face of the segmented cutting machine body, a pushing rod is slidably arranged in the pushing rod groove corresponding from left to right, a bamboo pushing block capable of pushing a cut thick bamboo rod into the flow guide cavity is fixedly arranged at one end of the pushing rod corresponding from left to right in the pushing block groove, the upper side end surface of the push rod is provided with a tooth stripe, the left and right corresponding push rod grooves are connected through a connecting cavity, a pushing motor is fixedly arranged between the front wall and the rear wall of the connecting cavity, a third rotating shaft is correspondingly arranged at the left end and the right end of the pushing motor, no. three axis of rotation extend to through No. four bearings the push rod inslot one end fixed mounting with rack line meshing's pinion.

On the basis of the technical scheme, the slitting device comprises sliding grooves which are arranged in the upper side end face of the bar-shaped cutting base in a front-back corresponding mode, sliding plates are arranged in the sliding grooves in a sliding mode, the front side and the back side of the sliding plates correspond to each other, the upper ends of the sliding plates are fixedly installed on the lower side end face of the reciprocating motion machine body, and a pushing disc capable of pushing thick bamboo poles on the slitting bearing platform to perform slitting is fixedly installed on the left side end face of the reciprocating motion machine body through a connecting block.

On the basis of the technical scheme, a motor cavity is arranged in the reciprocating motion machine body above the bar-shaped cutting base, a slitting motor is fixedly arranged between the upper wall and the lower wall of the motor cavity, the front end and the rear end of the slitting motor are correspondingly provided with four rotating shafts which are rotatably arranged in the front wall and the rear wall of the motor cavity through five bearings, a first belt wheel is fixedly arranged on a shaft body at one side of the four rotating shafts which correspond to each other in the front and the rear direction and is far away from the slitting motor, belt wheel cavities which are communicated with the bottom walls at the front position and the rear position of the motor cavity are correspondingly arranged in the inner end surfaces of the reciprocating motion machine body at the front position and the rear position of the bar-shaped cutting base, five rotating shafts are rotatably arranged in a side wall of the belt wheel cavity which corresponds to each other in the front and the rear direction and is far away from the bar-shaped cutting base through six bearings, and a step, the ladder meshing belt pulley group with the band pulley passes through the belt and connects, the correspondence is equipped with in the front and back terminal surface of bar cutting base and meshes the pole chamber, it is located fixed mounting about to correspond the slide bar about between the upper and lower wall of position about in the pole chamber to mesh the pole, control and correspond slide bar body is gone up from top to bottom slidable mounting has reciprocal meshing board, and what correspond from beginning to end reciprocal meshing board is kept away from on one side terminal surface of bar cutting base control the range be equipped with the meshing of ladder meshing belt pulley group's two-sided meshing pole, the bilateral symmetry of two-sided meshing pole is equipped with and can pass through ladder meshing belt pulley group with the reciprocal circulation meshing's of two-sided meshing pole semicircle switching-over ring.

The invention has the beneficial effects that: according to the bamboo strip cutting machine, the thick bamboo rods can be conveyed into the conveying cavity through the conveying belt, the whole thick bamboo rods are cut into fixed lengths in a segmented mode through the matching of the trigger sensor on the left side wall of the conveying cavity and the segmented cutting device, the thick bamboo rods cut into segments are pushed onto the strip cutting bearing table through the pushing device, the thick bamboo rods on the strip cutting bearing table are cut into thin strips through the matching of the pushing disc reciprocating left and right and the strip cutting blades shaped like a Chinese character 'mi', the machine is driven by the motor, manpower is saved, working efficiency is greatly improved, and the cut bamboo strips are more standard and have extremely low size difference compared with manual work.

Drawings

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

FIG. 1 is a schematic view of the overall structure of a thick bamboo pole sectional slicing and slitting machine according to the present invention;

FIG. 2 is a schematic view of the structure in the direction of 'A-A' in FIG. 1;

FIG. 3 is a schematic view of the structure in the direction of 'B-B' in FIG. 1;

FIG. 4 is an enlarged schematic view of the slitting device of FIG. 3;

FIG. 5 is a schematic view of the structure in the direction of 'C-C' in FIG. 4.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for convenience of description, the following orientations will now be defined: 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.

Referring to fig. 1 to 5, a device base 14 of a segmented cutting machine body 40 is fixedly arranged on the upper side end surface of the device base 14 close to the front position, a cutting cavity 36 is arranged in the right side end surface of the segmented cutting machine body 40, a segmented cutting device 001 capable of cutting the whole thick bamboo rod in a segmented manner is arranged in the cutting cavity 36, a conveying cavity 60 is communicated with the left side wall of the cutting cavity 36, a conveying belt 24 capable of conveying the thick bamboo rod to the left is rotatably arranged between the front and rear walls of the conveying cavity 60, a diversion cover 63 is fixedly arranged on the rear end surface of the segmented cutting machine body 40, a diversion cavity 64 is communicated with the rear side wall of the conveying cavity 60 in the lower side end surface of the diversion cover 63, a strip-shaped cutting base 13 is fixedly arranged on the upper side end surface of the device base 14 below the diversion cavity 64, a cutter frame ring 12 is fixedly arranged on the upper side end surface of the strip-shaped cutting base 13 close to the right position, install in the knife rest ring 12 and can cut into thin banding rice font slitting blade 11 with thick bamboo pole, be located rice font slitting blade 11 right side bar cutting base 13 up end sets firmly can slide and place slitting plummer 15 of thick bamboo pole, be equipped with in the lateral wall before the transport chamber 60 can with thick bamboo pole after the one-tenth end cutting on the conveyer belt 24 pushes away thrust unit 002 on slitting plummer 15, the upside terminal surface slidable mounting of bar cutting base 13 has can control reciprocal circulation and promotes thick bamboo pole and carry out slitting device 003 that the cutting was carried out.

In addition, in one embodiment, a conveying motor 58 is fixedly arranged in the front side wall of the conveying cavity 60 close to the left, a first rotating shaft 59 which is rotatably arranged in the rear side wall of the first belt wheel 30 through a first bearing 62 is arranged at the rear end of the conveying motor 58, a second rotating shaft 46 which corresponds to the first rotating shaft 59 is rotatably arranged in the front side wall and the rear side wall of the conveying cavity 60 which are positioned at the right of the first rotating shaft 59 through a second bearing 47, and the second rotating shaft 46 and the first rotating shaft 59 are connected through the conveying belt 24; therefore, the first rotating shaft 59 can be driven to rotate by starting the conveying motor 58, and the conveying belt 24 arranged on the first rotating shaft 59 and the second rotating shaft 46 can convey thick bamboo poles to the left.

In addition, in one embodiment, the segmented cutting device 001 includes a threaded lifting cavity 43 arranged in the front side wall of the cutting cavity 36, a bottom wall of the threaded lifting cavity 43 is fixedly provided with a threaded rod 45, the upper end of the threaded rod 45 is provided with a threaded rod 44 rotatably arranged in the top wall of the threaded lifting cavity 43 through a third bearing 42, a threaded sliding plate 39 capable of moving up and down in the cutting cavity 36 is in threaded connection with the shaft of the threaded rod 44, one end of the threaded sliding plate 39, which is positioned in the cutting cavity 36, is fixedly provided with a cutting motor 37, the left end of the cutting motor 37 is provided with a cutting blade 38, the top wall of the cutting cavity 36 is fixedly provided with a cutting frame 41 matched with the cutting blade 38, and the left side wall of the conveying cavity 60 is provided with a trigger sensor 61 electrically connected with the threaded rod 45; therefore, after the thick bamboo rod is placed into the conveying cavity 60 from the cutting cavity 36, the thick bamboo rod moves leftwards under the conveying of the conveying belt 24, after the thick bamboo rod is conveyed to the left end of the conveying cavity 60 and is contacted with the trigger sensor 61, the threaded rod 44 is driven to rotate through the starting motor 45, the threaded sliding plate 39 which is in threaded connection with the rod body of the threaded rod 44 can drive the cutting blade 38 to move upwards and downwards, and then the cutting motor 37 is started to drive the cutting blade 38 to cut the thick bamboo rod in a segmented mode.

In addition, in one embodiment, the pushing device 002 includes a left pushing block groove 54 and a right pushing block groove 54 correspondingly disposed in the front side wall of the conveying cavity 60, a pushing rod groove 48 is disposed in the front side wall of the left pushing block groove 54 and the right pushing block groove 54 correspondingly and communicated with the front side end face of the segmented cutting machine body 40, a pushing rod 50 is slidably mounted in the left pushing rod groove 48 and the right pushing rod groove 50 correspondingly, a bamboo pushing block 53 capable of pushing the cut thick bamboo rod into the guiding cavity 64 is fixedly mounted at one end of the pushing rod 50 correspondingly and left in the pushing block groove 54, the upper side end surface of the push rod 50 is provided with a tooth stripe 49, the left and right corresponding push rod grooves 48 are connected through a connecting cavity 57, a pushing motor 56 is fixedly arranged between the front wall and the rear wall of the connecting cavity 57, a third rotating shaft 55 is correspondingly arranged at the left end and the right end of the pushing motor 56, a gear wheel 52 meshed with the tooth stripe 49 is fixedly arranged at one end of the third rotating shaft 55 extending into the push rod groove 48 through a fourth bearing 51; therefore, the pushing motor 56 can be started to drive the left and right corresponding third rotating shafts 55 to rotate, the meshed gears 52 fixedly arranged at one ends of the third rotating shafts 55, which are positioned in the push rod grooves 48, drive the left and right corresponding push rods 50 to move back and forth through meshing with the rack grains 49, and the push rods 50 drive the bamboo pushing blocks 53 to push the thick bamboo poles into the flow guide cavities 64.

In addition, in one embodiment, the slitting device 003 includes sliding grooves 16 which are correspondingly arranged in the front and back in the upper end surface of the bar-shaped cutting base 13, sliding plates 35 are slidably mounted in the sliding grooves 16, the upper ends of the sliding plates 35 which correspond in the front and back are fixedly mounted on the lower end surface of the reciprocating machine body 19, and a pushing disc 18 which can push thick bamboo poles on the slitting bearing table 15 to perform slitting processing is fixedly mounted on the left end surface of the reciprocating machine body 19 through a connecting block 21; therefore, the reciprocating machine body 19 can be driven to move left and right by the sliding plate 35 which is arranged in the sliding chute 16 in a front-back corresponding sliding mode, and the thick bamboo rod can be pushed by the pushing disc 18 connected with the left end face of the reciprocating machine body 19 through the connecting block 21 to collide with the m-shaped slitting blade 11 for cutting.

In addition, in an embodiment, be located bar cutting base 13 top be equipped with motor chamber 27 in the reciprocating motion organism 19, fixed mounting has slitting motor 28 between the upper and lower wall in motor chamber 27, the front and back end correspondence of slitting motor 28 is equipped with and rotates through No. five bearings 31 and installs No. four axis of rotation 29 in the front and back wall in motor chamber 27, and front and back correspondence No. four axis of rotation 29 is kept away from No. four axis of rotation 30 fixed mounting has a band pulley 30 on one side shaft body of slitting motor 28, is located bar cutting base 13 front and back position reciprocating motion organism 19 inner end in-plane correspondence be equipped with the band pulley chamber 65 of motor chamber 27 front and back diapire intercommunication of position, front and back correspondence band pulley chamber 65 is kept away from rotate through No. six bearings 33 in a lateral wall of bar cutting base 13 and install No. five axis of rotation 34, front and back correspondence No. five axis of rotation 34 is close to one end fixed mounting of bar cutting base 13 with No. one band pulley 30, the stepped meshing belt pulley group 25 is connected with the first belt pulley 30 through a belt 32, meshing rod cavities 22 are correspondingly arranged in the front and back end surfaces of the strip-shaped cutting base 13, slide rods 26 corresponding to left and right are fixedly arranged between the upper and lower walls of the left and right positions in the meshing rod cavities 22, reciprocating meshing plates 23 are arranged on the rods 26 corresponding to left and right in an up-and-down sliding manner, double-sided meshing rods 17 meshed with the stepped meshing belt pulley group 25 are arranged on the end surface of one side, far away from the strip-shaped cutting base 13, of the reciprocating meshing plates 23 corresponding to front and back in a left-and-right manner, and semicircular reversing rings 20 capable of transiting the stepped meshing belt pulley group 25 and the double-sided meshing rods 17 to be in a reciprocating and circulating meshing manner are symmetrically arranged at the left and right positions of the double-sided meshing; thereby can drive the rotation of the corresponding No. four axis of rotation 29 around through starting slitting motor 28, fixed mounting is kept away from the corresponding No. four axis of rotation 29 in front and back and is moved the rotation of corresponding ladder meshing belt pulley group 25 around the belt 32 drive of slitting motor 28 one end No. one belt pulley 30, with the ladder meshing belt pulley group 25 drive reciprocating motion organism 19 of two-sided meshing 17 upside meshing, mesh with the terminal point of two-sided meshing 17 with the downside meshing of two-sided meshing 17 under the transition of semicircle switching-over ring 20 as ladder meshing belt pulley group 25, ladder meshing belt pulley group 25 drive reciprocating motion organism 19 moves to the right, make reciprocating motion organism 19 can control reciprocating motion.

When the whole thick bamboo pole needs to be cut into strips and slices in a segmented manner, firstly, the whole thick bamboo pole is placed into the conveying cavity 60; then, the conveyor belt 24 is driven to run by starting the conveyor motor 58, the thick bamboo rod is conveyed towards the left side, when the left end of the thick bamboo rod touches the trigger sensor 61, the 45 is started, and the 45 drives the cutting blade 38 to move upwards; the thick bamboo pole is cut in sections by a cutting blade 38 driven by a cutting motor 37; then, the bamboo pushing blocks 53 corresponding to the left and right are driven by starting the pushing motor 56 to push the segmented and cut thick bamboo poles into the diversion cavity 64, and the thick bamboo poles are placed on the slitting bearing table 15 through the diversion cavity 64; then, the reciprocating body 19 is driven to reciprocate left and right by starting the slitting motor 28, the thick bamboo rod after being cut in sections and placed on the slitting bearing table 15 can be pushed into the tool rest ring 12 in a reciprocating and circulating manner by the pushing disk 18 fixedly installed on the left end face of the reciprocating body 19 through the connecting block 21, and the thick bamboo rod can be cut into thin strips by the Mi-shaped slitting blade 11 in the tool rest ring 12.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a thick bamboo pole segmentation section bar cutter, leans on preceding position to set firmly the device base of segmentation cutting organism including the upside terminal surface, its characterized in that: a cutting cavity is arranged in the right side end face of the segmented cutting machine body, a segmented cutting device capable of cutting the whole thick bamboo rod in a split mode is arranged in the cutting cavity, a conveying cavity is communicated with the left side wall of the cutting cavity, a conveying belt capable of conveying the thick bamboo rod to the left is rotatably arranged between the front wall and the rear wall of the conveying cavity, a flow guide cover is fixedly arranged on the rear end face of the segmented cutting machine body, a flow guide cavity is communicated with the rear side wall of the conveying cavity in the lower side end face of the flow guide cover, a strip-shaped cutting base is fixedly arranged on the upper side end face of the device base below the flow guide cavity, a cutter frame ring is fixedly arranged at the position, close to the right end, of the upper side end face of the strip-shaped cutting base, a strip-shaped strip cutting blade capable of cutting the thick bamboo rod into thin strips is arranged in the cutter frame ring, a strip-shaped strip bearing table capable of slidably placing the thick bamboo rod, the conveying cavity is internally provided with a pushing device capable of pushing the cut thick bamboo poles on the conveying belt to the slitting bearing platform, and the upper side end face of the bar-shaped cutting base is slidably provided with a slitting device capable of circularly pushing the thick bamboo poles to perform cutting in a left-right reciprocating mode.

2. The thick bamboo pole sectional slice slitter of claim 1, wherein: carry and lean on left position to set firmly conveying motor in the preceding lateral wall in chamber, conveying motor's rear end is equipped with to rotate through a bearing and installs No. one axis of rotation in the lateral wall behind the band pulley is located No. one axis of rotation right side carry the chamber in the preceding back wall through No. two bearing rotate install with No. two axis of rotation that an axis of rotation corresponds, No. two axis of rotation with a axis of rotation passes through the conveyer belt is connected.

3. The thick bamboo pole sectional slice slitter of claim 1, wherein: segmentation cutting device is including locating screw thread lift chamber in the lateral wall before the cutting chamber, set firmly in the diapire in screw thread lift chamber, the upper end be equipped with through No. three bearing rotation install threaded rod in the screw thread lift chamber roof, the pole body of threaded rod threaded connection have can the screw thread slide of up-and-down motion in the cutting chamber, the screw thread slide is located one end fixed mounting in the cutting chamber has the cutting motor, cutting blade is installed to the left end of cutting motor, the roof in cutting chamber set firmly with cutting blade complex cutting frame, be equipped with on the left side wall in transport chamber with electric connection's trigger inductor.

4. The thick bamboo pole sectional slice slitter of claim 1, wherein: pushing equipment corresponds including controlling and locates carry the ejector pad groove in the preceding lateral wall of chamber, the left and right sides corresponds the preceding lateral wall in ejector pad groove with the preceding side end face intercommunication of segmentation cutting organism is equipped with the push rod groove, corresponds about, push rod inslot slidable mounting has the catch bar, controls and corresponds the catch bar is located push rod inslot's one end fixed mounting has the thick bamboo pole that can promote after the cutting and gets into the bamboo piece that pushes away in the water conservancy diversion intracavity, the side end face that goes up of catch bar is equipped with the tooth strip, and the left and right sides corresponds connect through connecting the chamber between the push rod groove, fixed mounting has push motor between the preceding back wall in connection chamber, push motor's the left and right sides end corresponds installs No. three axis of rotation, No. three axis of rotation extend to through No. four bearings push rod inslot one end fixed mounting have with the meshing of rack strip.

5. The thick bamboo pole sectional slice slitter of claim 1, wherein: the slitting device is including being located correspond the spout that is equipped with around in the bar cutting base upside terminal surface, slidable mounting has the sliding plate in the spout, and the front and back corresponds sliding plate upper end fixed mounting is on the downside terminal surface of reciprocating motion organism, the left side terminal surface of reciprocating motion organism has through connecting block fixed mounting can the propelling movement dish that the thick bamboo pole on the slitting plummer carries out slitting processing.

6. The thick bamboo pole sectional slice slitter as claimed in claim 5, wherein: the slitting device comprises a motor cavity arranged in the reciprocating motion machine body above the bar-shaped cutting base, a slitting motor is fixedly arranged between the upper wall and the lower wall of the motor cavity, the front end and the rear end of the slitting motor are correspondingly provided with a fourth rotating shaft which is rotatably arranged in the front wall and the rear wall of the motor cavity through a fifth bearing, a belt wheel is fixedly arranged on a shaft body at one side, far away from the slitting motor, of the fourth rotating shaft corresponding to the front end and the rear end of the slitting motor, belt wheel cavities communicated with the bottom walls of the front position and the rear position of the motor cavity are correspondingly arranged in the inner end faces of the reciprocating motion machine body at the front position and the rear position of the bar-shaped cutting base, a fifth rotating shaft is rotatably arranged in a side wall, far away from the bar-shaped cutting base, of the belt wheel cavities corresponding to the front end and the rear end, the fifth rotating shaft corresponding to the front end and the, the ladder meshing belt pulley group with the band pulley passes through the belt and connects, the correspondence is equipped with in the front and back terminal surface of bar cutting base and meshes the pole chamber, it is located fixed mounting about to correspond the slide bar about between the upper and lower wall of position about in the pole chamber to mesh the pole, control and correspond slide bar body is gone up from top to bottom slidable mounting has reciprocal meshing board, and what correspond from beginning to end reciprocal meshing board is kept away from on one side terminal surface of bar cutting base control the range be equipped with the meshing of ladder meshing belt pulley group's two-sided meshing pole, the bilateral symmetry of two-sided meshing pole is equipped with and can pass through ladder meshing belt pulley group with the reciprocal circulation meshing's of two-sided meshing pole semicircle switching-over ring.