CN112297243A

CN112297243A - Automatic distance groover of pay-off

Info

Publication number: CN112297243A
Application number: CN202011223055.0A
Authority: CN
Inventors: 张会珏
Original assignee: Hangzhou Ruifangrong Technology Co ltd
Current assignee: Hangzhou Ruifangrong Technology Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-02-02

Abstract

The invention discloses an automatic feeding distance grooving machine, which comprises a machine body, wherein the machine body is provided with a receiving cavity, a feeding mechanism is arranged in the receiving cavity, the feeding mechanism comprises a supporting plate fixedly arranged between the inner walls at the front side and the rear side of the receiving cavity, a sliding plate is arranged on the supporting plate in a sliding manner, a fixed plate is fixedly arranged on the inner wall at the right side of the receiving cavity, the fixed plate is positioned at the lower side of the sliding plate, a first sliding block is arranged on the upper end surface of the fixed plate in a sliding manner, a first groove is arranged on the lower end surface of the first sliding block, a second sliding block is arranged between the inner walls at the left side and the right side of the first groove in a sliding manner, and a first spring is fixedly arranged between the second sliding block and the inner wall at the upper side of the first groove. And then the grooving mechanism can perform grooving on the surface of the stone block at a fixed distance, so that the groove depth is ensured to be uniform.

Description

Automatic distance groover of pay-off

Technical Field

The invention relates to the field of stone processing, in particular to an automatic feeding distance grooving machine.

Background

In the process of processing the stone, a plurality of grooves are often required to be formed on the surface of the stone for the stone to be attractive, most of the existing stone grooving work is manual operation and transportation, the depth of the groove and the direction of the groove have certain deviation, and the uniformity and the efficiency are not high enough, so that equipment is required to avoid the conditions.

Disclosure of Invention

The invention aims to solve the technical problem of providing an automatic feeding distance grooving machine, which overcomes the problems of low efficiency, low quality and the like of manual grooving.

The invention is realized by the following technical scheme.

The invention relates to an automatic feeding distance grooving machine, which comprises a machine body, wherein the machine body is provided with a receiving cavity, a feeding mechanism is arranged in the receiving cavity, the feeding mechanism comprises a supporting plate fixedly arranged between the inner walls at the front side and the rear side of the receiving cavity, a sliding plate is arranged on the supporting plate in a sliding manner, a fixed plate is fixedly arranged on the inner wall at the right side of the receiving cavity, the fixed plate is positioned at the lower side of the sliding plate, a first sliding block is arranged on the upper end surface of the fixed plate in a sliding manner, a first groove is arranged on the lower end surface of the first sliding block, a second sliding block is arranged between the inner walls at the left side and the right side of the first groove in a sliding manner, a first spring is fixedly arranged between the second sliding block and the inner wall at the upper side of the first groove, a second groove is arranged on the upper end surface of the fixed plate, the second groove is positioned at the left side of the, a driving gear is fixedly arranged on the first rotating shaft, the driving gear is meshed with the lower end face of the sliding plate and the upper end face of the first sliding block, a second spring is fixedly arranged between the first sliding block and the inner wall of the right side of the accommodating cavity, a baffle is fixedly arranged on the inner wall of the lower side of the accommodating cavity, the baffle is positioned on the left side of the fixed plate, a moving plate and a third sliding block are arranged on the baffle in a sliding mode, the third sliding block is positioned on the upper side of the moving plate, the moving plate penetrates through the left end face and the right end face of the baffle, a fixing bolt is fixedly arranged on the upper end face of the moving plate;

a clamping mechanism is arranged in the containing cavity, the clamping mechanism comprises two limiting plates fixedly arranged on the left end face of the third slider, the two limiting plates are distributed in the front and back directions, a first motor is fixedly arranged on the front end face of the limiting plate on the rear side, a second rotating shaft is rotatably arranged on the front end of the first motor, a fixing shell is fixedly arranged on the second rotating shaft, a bearing plate is fixedly arranged on the upper end face of the fixing shell, an air cavity is arranged in the fixing shell, a fourth slider is slidably arranged between the inner walls on the left side and the right side of the air cavity, a top plate is fixedly arranged on the upper end face of the fourth slider, the top plate penetrates through the upper end face and the lower end face of the supporting plate, a third spring is fixedly arranged between the fourth slider and the inner wall on the lower side of the air cavity, a third rotating shaft is rotatably arranged on the lower end face of the fourth slider, the third, the driving gear is located on the lower side of the fixed shell, a protective shell is fixedly arranged on the lower end face of the bearing plate, a second motor is fixedly arranged on the lower end face of the protective shell, a fourth rotating shaft is rotatably arranged at the upper end of the second motor and penetrates through the upper end face and the lower end face of the protective shell, a first rack and a second rack are symmetrically arranged on the upper end face of the protective shell in a left-right sliding mode by taking the fourth rotating shaft as a center, the first rack and the second rack are meshed with the driving gear, a first clamping plate is fixedly arranged on the upper end face of the first rack, the first clamping plate is located on the rear side of the fixed shell, a second clamping plate is fixedly arranged on the upper end face of the second rack, and the second clamping plate;

the containing cavity is internally provided with a grooving mechanism, the grooving mechanism comprises a limiting plate fixedly arranged between the inner walls of the front side and the rear side of the containing cavity, the right end face of the limiting plate is provided with a fifth sliding block in a sliding manner, the inner wall of the rear side of the containing cavity is fixedly provided with a third motor, the third motor is positioned on the right side of the limiting plate, the front end of the third motor is provided with a fifth rotating shaft in a rotating manner, the front end face of the fifth rotating shaft is rotatably arranged on the inner wall of the front side of the containing cavity, the fifth rotating shaft penetrates through the front end face and the rear end face of the fifth sliding block, the inner wall of the fifth sliding block is connected with the fifth rotating shaft through threads, the right end face of the fifth sliding block is fixedly provided with an air pressure shell, the upper end face of the air pressure shell is fixedly provided with an air pressure machine, the air pressure cavity is internally provided, the push rod lower end face is fixedly provided with a push plate, the push plate lower end face is fixedly provided with a fourth motor, the lower end of the fourth motor rotates to be provided with a fixed plate, and a sixth rotating shaft is fixedly arranged on the fixed plate.

Preferably, feeding mechanism includes accomodate the fixed fifth motor that is equipped with of chamber rear side inner wall, the fifth motor is located the backup pad left side, fifth motor front end rotates and is equipped with the seventh pivot, the terminal surface rotates the setting before the seventh pivot is in accomodate chamber front side inner wall, fixed first driving roll and the driving pulley of being equipped with in the seventh pivot, the driving pulley is located first driving roll front side, it is equipped with the eighth pivot to accomodate to rotate between the chamber front and back side inner wall, the eighth pivot is located the seventh pivot with between the backup pad, the fixed first driven roll that is equipped with in the eighth pivot, first driven roll with first driving roll passes through first track and connects.

Preferably, a ninth rotating shaft and a tenth rotating shaft are arranged between the inner walls of the front side and the rear side of the containing cavity in a rotating manner, the ninth rotating shaft and the ninth rotating shaft are located on the lower side of the limiting plate, the tenth rotating shaft is located on the right side of the ninth rotating shaft, a second driving roller and a driven gear are fixedly arranged on the ninth rotating shaft, the driven gear is located on the front side of the second driving roller, a second driven roller is fixedly arranged on the tenth rotating shaft and connected with the second driving roller through a second crawler belt, an eleventh rotating shaft is arranged on the inner wall of the front side of the containing cavity in a rotating manner and located between the seventh rotating shaft and the ninth rotating shaft, a driven pulley and a driving roller are fixedly arranged on the seventh rotating shaft, the driving roller is located on the rear side of the driven pulley, and the driven pulley is connected with the driving pulley through a belt, the driving roller is engaged with the driven gear.

The invention has the beneficial effects that: when the stone block slotting machine is used, the feeding mechanism can take out stone blocks block by block, the carrying efficiency is high, then the stone blocks are positioned and held by the clamping mechanism, the stability in processing is ensured, and then the slotting mechanism can slot the surfaces of the stone blocks at intervals, so that the uniformity of the slot depth is ensured.

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.

FIG. 1 is a schematic structural view of an example of the present invention;

FIG. 2 is a schematic view of the embodiment of the present invention in the direction of A-A in FIG. 1;

FIG. 3 is a schematic view of the embodiment of the present invention in the direction B-B in FIG. 1;

FIG. 4 is a schematic view of the embodiment of the present invention in the direction of C-C in FIG. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, 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 automatic feeding distance grooving machine described with reference to fig. 1-4 includes a machine body 10, the machine body 10 is provided with a receiving chamber 11, a feeding mechanism 80 is disposed in the receiving chamber 11, the feeding mechanism 80 includes a supporting plate 29 fixedly disposed between the front and rear inner walls of the receiving chamber 11, a sliding plate 30 is slidably disposed on the supporting plate 29, a fixed plate 74 is fixedly disposed on the right inner wall of the receiving chamber 11, the fixed plate 74 is located on the lower side of the sliding plate 30, a first slider 33 is slidably disposed on the upper end surface of the fixed plate 74, a first groove 34 is disposed on the lower end surface of the first slider 33, a second slider 37 is slidably disposed between the left and right inner walls of the first groove 34, a first spring 36 is fixedly disposed between the second slider 37 and the upper inner wall of the first groove 34, a second groove 38 is disposed on the upper end surface of the fixed plate 74, the second groove 38 is located on the left side of the first groove 34, a first rotating shaft 31 is slidably arranged between the inner walls of the front side and the rear side of the containing cavity 11, the first rotating shaft 31 is located between the sliding plate 30 and the first sliding block 33, a driving gear 32 is fixedly arranged on the first rotating shaft 31, the driving gear 32 is engaged with the lower end surface of the sliding plate 30 and the upper end surface of the first sliding block 33, a second spring 35 is fixedly arranged between the first sliding block 33 and the inner wall of the right side of the containing cavity 11, a baffle plate 41 is fixedly arranged on the inner wall of the lower side of the containing cavity 11, the baffle plate 41 is located on the left side of the fixed plate 74, a moving plate 40 and a third sliding block 44 are slidably arranged on the baffle plate 41, the third sliding block 44 is located on the upper side of the moving plate 40, the moving plate 40 penetrates through the left and right end surfaces of the baffle plate 41, a fixed bolt 39 is fixedly arranged on the upper end surface of the moving plate 40, the sliding plate 30 drives the driving gear 32 to rotate by meshing with the driving gear 32, the driving gear 32 drives the first slider 33 to rotate by meshing with the first slider 33, and the first groove 34 pushes the second slider 37 to clamp the second groove 38;

a clamping mechanism 81 is arranged in the accommodating cavity 11, the clamping mechanism 81 comprises two limiting plates 51 fixedly arranged on the left end face of the third slider 44, the two limiting plates 51 are distributed front and back, a first motor 45 is fixedly arranged on the front end face of the limiting plate 51 on the rear side, a second rotating shaft 46 is rotatably arranged at the front end of the first motor 45, a fixing shell 47 is fixedly arranged on the second rotating shaft 46, a bearing plate 54 is fixedly arranged on the upper end face of the fixing shell 47, an air cavity 48 is arranged in the fixing shell 47, a fourth slider 52 is slidably arranged between the left inner wall and the right inner wall of the air cavity 48, a top plate 53 is fixedly arranged on the upper end face of the fourth slider 52, the top plate 53 penetrates through the upper end face and the lower end face of the supporting plate 29, a third spring 49 is fixedly arranged between the fourth slider 52 and the lower inner wall of the air cavity 48, a third rotating shaft 50 is rotatably arranged on the lower end face of the fourth slider 52, and the third rotating, the third rotating shaft 50 is fixedly provided with a driving gear 55, the driving gear 55 is located on the lower side of the fixed shell 47, the lower end face of the bearing plate 54 is fixedly provided with a protective shell 75, the lower end face of the protective shell 75 is fixedly provided with a second motor 60, the upper end of the second motor 60 is rotatably provided with a fourth rotating shaft 61, the fourth rotating shaft 61 penetrates through the upper end face and the lower end face of the protective shell 75, the upper end face of the protective shell 75 is provided with a first rack 58 and a second rack 56 in a bilateral symmetry manner by taking the fourth rotating shaft 61 as a center, the first rack 58 and the second rack 56 are meshed with the driving gear 55, the upper end face of the first rack 58 is fixedly provided with a first clamping plate 59, the first clamping plate 59 is located on the rear side of the fixed shell 47, the upper end face of the second rack 56 is fixedly provided with a second clamping plate 57, the second clamping plate 57 is located on the front side of, the top plate 53 pushes the fourth slider 52 to slide downwards, the fourth slider 52 drives the third rotating shaft 50 to slide downwards, the fourth rotating shaft 61 is matched with the third rotating shaft 50, the second motor 60 drives the fourth rotating shaft 61 to rotate, the fourth rotating shaft 61 drives the driving gear 55 to rotate, and the driving gear 55 drives the first rack 58 and the second rack 56 to slide through meshing with the first rack 58 and the second rack 56;

the containing cavity 11 is internally provided with a slotting mechanism 82, the slotting mechanism 82 comprises a limiting plate 62 fixedly arranged between the inner walls of the front and rear sides of the containing cavity 11, the right end face of the limiting plate 62 is provided with a fifth sliding block 65 in a sliding manner, the inner wall of the rear side of the containing cavity 11 is fixedly provided with a third motor 63, the third motor 63 is positioned on the right side of the limiting plate 62, the front end of the third motor 63 is provided with a fifth rotating shaft 64 in a rotating manner, the front end face of the fifth rotating shaft 64 is rotatably arranged on the inner wall of the front side of the containing cavity 11, the fifth rotating shaft 64 penetrates through the front and rear end faces of the fifth sliding block 65, the inner wall of the fifth sliding block 65 is connected with the fifth rotating shaft 64 through threads, the right end face of the fifth sliding block 65 is fixedly provided with an air pressure shell 66, the upper end face of the air pressure shell 66 is fixedly provided with an air pressure machine 70, a, the fixed push rod 68 that is equipped with of lower terminal surface of piston 69, push rod 68 runs through pressure chamber 67 downside inner wall, the fixed push pedal 71 that is equipped with of lower terminal surface of push rod 68, the fixed fourth motor 72 that is equipped with of lower terminal surface of push pedal 71, the rotation of fourth motor 72 lower extreme is equipped with fixed plate 74, the fixed sixth pivot 73 that is equipped with on the fixed plate 74, the third motor 63 drive fifth pivot 64 rotates, fifth pivot 64 drives through threaded connection fifth slider 65 slides, fifth slider 65 drives pneumatic press casing 66 removes, the pneumatic press 70 drive piston 69 slides, piston 69 passes through push rod 68 drives push pedal 71 removes, the fourth motor 72 drive fixed plate 74 rotates, fixed plate 74 drives sixth pivot 73 rotates.

Beneficially, the feeding mechanism 80 includes a fifth motor 12 fixedly disposed on the inner wall of the rear side of the receiving cavity 11, the fifth motor 12 is located on the left side of the supporting plate 29, a seventh rotating shaft 13 is rotatably disposed at the front end of the fifth motor 12, the front end surface of the seventh rotating shaft 13 is rotatably disposed on the inner wall of the front side of the receiving cavity 11, a first driving roller 14 and a driving pulley 16 are fixedly disposed on the seventh rotating shaft 13, the driving pulley 16 is located on the front side of the first driving roller 14, an eighth rotating shaft 25 is rotatably disposed between the inner walls of the front side and the rear side of the receiving cavity 11, the eighth rotating shaft 25 is located between the seventh rotating shaft 13 and the supporting plate 29, a first driven roller 26 is fixedly disposed on the eighth rotating shaft 25, and the first driven roller 26 is connected to the first driving roller 14 through a first crawler 15.

Beneficially, a ninth rotating shaft 21 and a tenth rotating shaft 27 are rotatably disposed between the inner walls of the front and rear sides of the accommodating chamber 11, the ninth rotating shaft 21 and the ninth rotating shaft 21 are located at the lower side of the limiting plate 62, the tenth rotating shaft 27 is located at the right side of the ninth rotating shaft 21, a second driving roller 22 and a driven gear 24 are fixedly disposed on the ninth rotating shaft 21, the driven gear 24 is located at the front side of the second driving roller 22, a second driven roller 28 is fixedly disposed on the tenth rotating shaft 27, the second driven roller 28 is connected to the second driving roller 22 through a second crawler belt 23, an eleventh rotating shaft 18 is rotatably disposed on the inner wall of the front side of the accommodating chamber 11, the eleventh rotating shaft 18 is located between the seventh rotating shaft 13 and the ninth rotating shaft 21, a driven pulley 19 and a driving roller 20 are fixedly disposed on the seventh rotating shaft 13, and the driving roller 20 is located at the rear side of the driven pulley 19, the driven pulley 19 is connected to the driving pulley 16 via a belt 17, and the driving drum 20 is engaged with the driven gear 24.

In the initial state, the third spring 49 and the first spring 36 are in a compressed state, and the second spring 35 is in a normal state.

When the device is used, the fifth motor 12 is started, the fifth motor 12 drives the seventh rotating shaft 13 to rotate, the seventh rotating shaft 13 drives the first driving roller 14 and the driving pulley 16 to rotate, the first driving roller 14 drives the first driven roller 26 to rotate through the first crawler 15 and convey stones to the upper end of the fourth sliding block 52, the stones push the sliding plate 30 to slide right, the sliding plate 30 drives the driving gear 32 to rotate through meshing with the driving gear 32, the driving gear 32 drives the first sliding block 33 to rotate through meshing with the first sliding block 33, the first groove 34 pushes the second sliding block 37 to clamp the second groove 38, then the stones press down the top plate 53, the top plate 53 pushes the fourth sliding block 52 to slide downwards, the fourth sliding block 52 drives the third rotating shaft 50 to slide downwards, the fourth rotating shaft 61 is matched with the third rotating shaft 50, the second motor 60 drives the fourth rotating shaft 61 to rotate, the fourth rotating shaft 61 drives the driving gear 55 to rotate, the driving gear 55 drives the first rack 58 and the second rack 56 to slide through the meshing with the first rack 58 and the second rack 56, the stone is clamped, the first motor 45 is started, the first motor 45 drives the fixed shell 47 to rotate ninety degrees anticlockwise, the fourth motor 72 is started, the fourth motor 72 drives the fixed plate 74 to rotate, the fixed plate 74 drives the sixth rotating shaft 73 to rotate to cut the stone, the third motor 63 is started, the third motor 63 drives the fifth rotating shaft 64 to rotate, the fifth rotating shaft 64 drives the fifth sliding block 65 to slide through the threaded connection with the fifth sliding block 65, the fifth sliding block 65 drives the air pressure machine shell 66 to move and feed, the air pressure machine 70 is started, the air pressure machine 70 drives the piston 69 to slide, the piston 69 drives the push plate 71 to move through the push rod 68, and the push plate 71 drives the fourth motor 72 to move and adjust the slotting interval.

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. The utility model provides an autoloading's distance groover, includes the organism, its characterized in that: the machine body is provided with a containing cavity, a feeding mechanism is arranged in the containing cavity, the feeding mechanism comprises a supporting plate fixedly arranged between the inner walls of the front side and the rear side of the containing cavity, a sliding plate is arranged on the supporting plate in a sliding manner, a fixed plate is fixedly arranged on the inner wall of the right side of the containing cavity, the fixed plate is positioned on the lower side of the sliding plate, a first sliding block is arranged on the upper end surface of the fixed plate in a sliding manner, a first groove is arranged on the lower end surface of the first sliding block, a second sliding block is arranged between the inner walls of the left side and the right side of the first groove in a sliding manner, a first spring is fixedly arranged between the second sliding block and the inner wall of the upper side of the first groove, a second groove is arranged on the upper end surface of the fixed plate, the second groove is positioned on the left side of the first groove, a first rotating shaft is arranged between the inner, the driving gear is meshed with the lower end face of the sliding plate and the upper end face of the first sliding block, a second spring is fixedly arranged between the first sliding block and the inner wall of the right side of the containing cavity, a baffle is fixedly arranged on the inner wall of the lower side of the containing cavity and positioned on the left side of the fixed plate, a moving plate and a third sliding block are slidably arranged on the baffle, the third sliding block is positioned on the upper side of the moving plate, the moving plate penetrates through the left end face and the right end face of the baffle, a fixed bolt is fixedly arranged on the upper end face of the moving plate, and the fixed bolt is positioned on the lower; a clamping mechanism is arranged in the containing cavity, the clamping mechanism comprises two limiting plates fixedly arranged on the left end face of the third slider, the two limiting plates are distributed in the front and back directions, a first motor is fixedly arranged on the front end face of the limiting plate on the rear side, a second rotating shaft is rotatably arranged on the front end of the first motor, a fixing shell is fixedly arranged on the second rotating shaft, a bearing plate is fixedly arranged on the upper end face of the fixing shell, an air cavity is arranged in the fixing shell, a fourth slider is slidably arranged between the inner walls on the left side and the right side of the air cavity, a top plate is fixedly arranged on the upper end face of the fourth slider, the top plate penetrates through the upper end face and the lower end face of the supporting plate, a third spring is fixedly arranged between the fourth slider and the inner wall on the lower side of the air cavity, a third rotating shaft is rotatably arranged on the lower end face of the fourth slider, the third, the driving gear is located on the lower side of the fixed shell, a protective shell is fixedly arranged on the lower end face of the bearing plate, a second motor is fixedly arranged on the lower end face of the protective shell, a fourth rotating shaft is rotatably arranged at the upper end of the second motor and penetrates through the upper end face and the lower end face of the protective shell, a first rack and a second rack are symmetrically arranged on the upper end face of the protective shell in a left-right sliding mode by taking the fourth rotating shaft as a center, the first rack and the second rack are meshed with the driving gear, a first clamping plate is fixedly arranged on the upper end face of the first rack, the first clamping plate is located on the rear side of the fixed shell, a second clamping plate is fixedly arranged on the upper end face of the second rack, and the second clamping plate; the containing cavity is internally provided with a grooving mechanism, the grooving mechanism comprises a limiting plate fixedly arranged between the inner walls of the front side and the rear side of the containing cavity, the right end face of the limiting plate is provided with a fifth sliding block in a sliding manner, the inner wall of the rear side of the containing cavity is fixedly provided with a third motor, the third motor is positioned on the right side of the limiting plate, the front end of the third motor is provided with a fifth rotating shaft in a rotating manner, the front end face of the fifth rotating shaft is rotatably arranged on the inner wall of the front side of the containing cavity, the fifth rotating shaft penetrates through the front end face and the rear end face of the fifth sliding block, the inner wall of the fifth sliding block is connected with the fifth rotating shaft through threads, the right end face of the fifth sliding block is fixedly provided with an air pressure shell, the upper end face of the air pressure shell is fixedly provided with an air pressure machine, the air pressure cavity is internally provided, the push rod lower end face is fixedly provided with a push plate, the push plate lower end face is fixedly provided with a fourth motor, the lower end of the fourth motor rotates to be provided with a fixed plate, and a sixth rotating shaft is fixedly arranged on the fixed plate.

2. An autofeed distance groover according to claim 1, characterized in that: feeding mechanism includes accomodate the fixed fifth motor that is equipped with of chamber rear side inner wall, the fifth motor is located the backup pad left side, fifth motor front end rotates and is equipped with the seventh pivot, the terminal surface rotates before the seventh pivot and sets up accomodate chamber front side inner wall, fixed first driving roll and the driving pulley of being equipped with in the seventh pivot, the driving pulley is located first driving roll front side, it is equipped with the eighth pivot to accomodate the rotation of chamber front and back side inner wall within a definite time, the eighth pivot is located the seventh pivot with between the backup pad, the fixed first driven roll that is equipped with in the eighth pivot, first driven roll with first driving roll passes through first track and connects.

3. An autofeed distance groover according to claim 1, characterized in that: a ninth rotating shaft and a tenth rotating shaft are rotatably arranged between the inner walls of the front side and the rear side of the containing cavity, the ninth rotating shaft and the ninth rotating shaft are positioned at the lower side of the limiting plate, the tenth rotating shaft is positioned at the right side of the ninth rotating shaft, a second driving roller and a driven gear are fixedly arranged on the ninth rotating shaft, the driven gear is positioned at the front side of the second driving roller, a second driven roller is fixedly arranged on the tenth rotating shaft, the second driven roller is connected with the second driving roller through a second crawler belt, an eleventh rotating shaft is rotatably arranged on the inner wall of the front side of the containing cavity, the eleventh rotating shaft is positioned between the seventh rotating shaft and the ninth rotating shaft, a driven belt wheel and a driving roller are fixedly arranged on the seventh rotating shaft, the driving roller is positioned at the rear side of the driven belt wheel, the driven belt wheel is connected with the driving belt wheel through a belt, and the driving roller is meshed with the driven gear.