CN113442506A

CN113442506A - Automatic cutting equipment of corrugated box

Info

Publication number: CN113442506A
Application number: CN202110620742.4A
Authority: CN
Inventors: 邱联强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-09-28

Abstract

The invention belongs to the field of cutting equipment, and particularly relates to corrugated carton automatic cutting equipment which comprises a support; the top swing joint of support has cutting equipment, cutting equipment's outside fixedly connected with dustcoat, cutting equipment includes the bottom plate. This automatic cutting equipment of corrugated box is through setting up slewing mechanism, when the double-end cam rotates, the bull stick slides along the spacing groove, the bull stick drives the ejector pin motion, when the double-end cam is perpendicular, the splint of bottom contact with the fixture block under the action of gravity, along with ejector pin extrusion carton, the bull stick is crowded into the draw-in groove with the fixture block, the skew takes place in the pivot of fixture block, the power arm is less than the resistance arm gradually, the slewing mechanism card dies, so relapse, utilize gravity and reaction force, under lever principle's effect, prevent that slewing mechanism from skidding, the double-end cam rotates the round and can work twice, the slow problem of traditional corrugated box cutting equipment work efficiency has been solved.

Description

Automatic cutting equipment of corrugated box

Technical Field

The invention belongs to the field of cutting equipment, and particularly relates to automatic cutting equipment for corrugated cartons.

Background

The corrugated paper board is made into a corrugated paper box through die cutting, indentation, box nailing or box gluing. The corrugated case is a packaging product, and the using amount is always the first of various packaging products. Corrugated boxes gradually replace transport packaging containers such as wooden boxes and the like with excellent service performance and good processing performance, and become the leading force of transport packaging. It not only protects the goods, is convenient for storage and transportation, but also beautifies the goods and publicizes the goods. The corrugated case belongs to green environmental protection product, and it does benefit to the environmental protection, does benefit to the loading and unloading transportation.

When traditional corrugated box cuts, adopt metal cutting dish linear cutting method more, this method can be tailor the shaping with the carton fast, however, to the corner that is less than the cutting dish diameter of similar dovetail groove form, traditional linear cutting need the repeated sword that advances and retreats, wasted time and material, and efficiency is not high to, linear cutting produces easily and sticks up limit and sharp edge, sticks up the limit and can increase the defective percentage, and sharp edge can cut injury operating personnel and raw materials.

Disclosure of Invention

The invention aims to provide an automatic cutting device for corrugated cartons, which aims to solve the problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to corrugated carton automatic cutting equipment, which comprises a support; the top swing joint of support has cutting equipment, cutting equipment's outside fixedly connected with dustcoat, cutting equipment includes the bottom plate, the external surface fixedly connected with connector of bottom plate, the internal surface rotation of connector is connected with the transmission shaft, the external surface fixedly connected with cylinder of transmission shaft, the external surface rotation of cylinder is connected with the conveyer belt, open in the wall of conveyer belt and be equipped with the inlet port.

The outer surface of conveyer belt and the internal surface swing joint of bottom plate, the outer fixed surface of bottom plate is connected with pneumatic mechanism, pneumatic mechanism is located between conveyer belt and the bottom plate, pneumatic mechanism's both sides swing joint has the slide bar, the outer surface swing joint of slide bar has step mechanism, the internal surface of slide bar and the outer surface sliding connection of bottom plate.

Step mechanism is including leading to the groove, it sets up in the wall of slide bar to lead to the groove, the upper surface sliding connection of slide bar has the driver, the internal surface of driver rotates and is connected with slewing mechanism, slewing mechanism's bottom is provided with reciprocating mechanism, reciprocating mechanism's surface passes through the surface sliding connection of spout and slide bar.

The reciprocating mechanism comprises a slide block, a fixed rod is fixedly connected in the wall of the slide block, the top end of the fixed rod is fixedly connected with the lower surface of the driver, the bottom end of the fixed rod is rotatably connected with an inclined rod, the bottom end of the inclined rod is rotatably connected with a pressing plate through an elastic steel sheet, the lower surface of the pressure plate is rotatably connected with a roller, the outer surface of the roller is contacted with the outer surface of the conveyor belt, the top of the roller is provided with a top rod, the top end of the top rod is contacted with the lower surface of the rotating mechanism, the outer surface of the top rod is movably connected with a limiting rod, the left end of the limiting rod is fixedly connected with the outer surface of the fixed rod, the lower surface of the limiting rod is fixedly connected with a compression spring which is positioned outside the ejector rod, the outer fixed surface of ejector pin is connected with the connecting rod, the connecting rod is located the bottom of gag lever post, the both ends of connecting rod contact with the surface of down tube.

Slewing mechanism includes the double-end cam, the spacing groove has been seted up in the wall of double-end cam, the internal surface swing joint in spacing groove has the bull stick, the bottom of bull stick rotates with the top of ejector pin to be connected, the both sides on bull stick top are provided with splint, the surface of splint rotates with the surface of double-end cam to be connected, the draw-in groove has been seted up in the wall of splint, the left side below of splint is provided with the fixture block, the surface of fixture block rotates with the surface of double-end cam to be connected, fixedly connected with reset spring in the wall of fixture block, reset spring's bottom is connected with the internal surface fixed connection of fixture block, reset spring's top is connected with the surface rotation of double-end cam.

Pneumatic mechanism includes the fixed block, swivelling joint has the screw rod in the wall of fixed block, the left end of screw rod rotates with the internal surface of connector to be connected, the surface of screw rod and the internal surface threaded connection of slide bar, the back story of screw rod is connected with the bifurcated pipe, the last fixed surface of bifurcated pipe is connected with the breathing pipe, the top fixedly connected with jet-propelled pipe of bifurcated pipe, jet-propelled pipe is located the top of conveyer belt, the bottom and the air pump of bifurcated pipe are connected.

The invention has the following beneficial effects:

1. the invention arranges the slide bar, when the device is running, the stepping mechanism slides left and right along the outer surface of the slide bar under the action of the chute, when the transmission shaft rotates, the transmission shaft drives the screw to rotate under the action of the connector, the screw drives the slide bar to move back and forth, because the screw is symmetrically arranged at two sides of the fixed block, the motion of the slide bar is not influenced mutually, the stepping mechanism can move to any point in the stroke at the horizontal X axis and the horizontal Y axis, under the action of the rotating mechanism and the reciprocating mechanism, the stepping mechanism moves vertically, the Z axis can also be changed, the cutting of different thicknesses and shapes can be realized by changing X, Y, Z three-point values, the flexibility is increased, meanwhile, the stepping mechanism adopts a vertical nail hole type cutting method, the cutting effect can be realized, the carton corners can be prevented from being too sharp, the problem that the straight cutting range and the angle of the traditional corrugated carton are limited is solved, and the cut edges are easy to cut.

2. The invention has the advantages that through the arrangement of the reciprocating mechanism, when the carton is conveyed to the bottom of the stepping mechanism from the conveyor belt, the roller moves upwards, the roller and the conveyor belt clamp the carton, when the rotating mechanism rotates, the ejector rod reciprocates up and down, the ejector rod extends out and retracts when stopping working, the inclined rod and the pressing plate play a certain protection role while adjusting the height, because the surface area of the roller is larger, the roller has smaller pressure on the upper surface of the carton under the same pressure, the situation of edge warping of the carton in the cutting process can be reduced by matching with a nail hole type cutting method, the air suction pipe pumps air downwards under the action of the air pump, the air flow can be sprayed out by the air injection pipe, under the action of vortex, the additional pressure is provided by utilizing the downward pressure difference, the air pump can directly pump out, so that the inner part of the outer cover forms negative pressure, the additional pressure is provided by utilizing the air pressure difference, the clamping is assisted, the problem of fixed linear cutting thickness of the traditional corrugated carton is solved, and the edge is easy to warp.

3. According to the invention, the rotating mechanism is arranged, when the double-head cam rotates, the rotating rod slides along the limiting groove, the rotating rod drives the ejector rod to move, when the double-head cam is vertical, the clamping plate at the bottom is in contact with the clamping block under the action of gravity, the opening angle of the clamping plate at the top is increased, the rotating rod is pushed to move upwards by the reaction force along with the extrusion of the carton by the ejector rod, the clamping block is extruded into the clamping groove by the rotating rod, the reset spring contracts, the rotating shaft of the clamping block deviates, the power arm is gradually smaller than the resistance arm, the rotating mechanism is clamped under the action of the lever, the rotating mechanism is unlocked along with the rotation of the double-head cam, and the operation is repeated, so that the rotating mechanism is prevented from slipping under the action of the lever principle by utilizing the gravity and the reaction force, the double-head cam can work twice when rotating for one circle, and the problem of slow working efficiency of the traditional corrugated carton cutting equipment is solved.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the base plate of the present invention;

FIG. 4 is a schematic structural view of the step movement mechanism of the present invention;

FIG. 5 is a schematic view of the reciprocating mechanism of the present invention;

FIG. 6 is a schematic view of the construction of the rotating mechanism of the present invention;

fig. 7 is a schematic structural view of the pneumatic mechanism of the present invention.

In the figure: the cutting device comprises a bracket 1, a cutting device 2, an outer cover 3, a bottom plate 10, a connector 11, a transmission shaft 12, a roller 13, a conveyor belt 14, an air inlet 15, a pneumatic mechanism 16, a sliding rod 17, a stepping mechanism 18, a through groove 20, a driver 21, a rotating mechanism 22, a sliding groove 23, a reciprocating mechanism 24, a sliding block 30, a fixed rod 31, an inclined rod 32, an elastic steel sheet 33, a pressing plate 34, a roller 35, a top rod 36, a limiting rod 37, a compression spring 38, a connecting rod 39, a double-head cam 40, a limiting groove 41, a rotating rod 42, a clamping plate 43, a clamping groove 44, a clamping block 45, a reset spring 46, a fixed block 50, a screw rod 51, a branch pipe 52, an air suction pipe 53 and an air injection pipe 54.

Detailed Description

An automated cutting apparatus for corrugated cardboard boxes according to an embodiment of the present invention will be described below with reference to fig. 1 to 7.

As shown in fig. 1 to 7, an automatic cutting apparatus for corrugated cardboard boxes of the present invention comprises a frame 1; the top swing joint of support 1 has cutting equipment 2, cutting equipment 2's outside fixedly connected with dustcoat 3, cutting equipment 2 includes bottom plate 10, the external fixed surface of bottom plate 10 is connected with connector 11, connector 11's internal surface rotates and is connected with transmission shaft 12, the external fixed surface of transmission shaft 12 is connected with cylinder 13, the external surface of cylinder 13 rotates and is connected with conveyer belt 14, has seted up inlet port 15 in the wall of conveyer belt 14.

The outer surface of the conveyor belt 14 is movably connected with the inner surface of the bottom plate 10, the outer surface of the bottom plate 10 is fixedly connected with a pneumatic mechanism 16, the pneumatic mechanism 16 is located between the conveyor belt 14 and the bottom plate 10, two sides of the pneumatic mechanism 16 are movably connected with slide rods 17, the outer surface of each slide rod 17 is movably connected with a stepping mechanism 18, and the inner surface of each slide rod 17 is slidably connected with the outer surface of the bottom plate 10.

The stepping mechanism 18 comprises a through groove 20, the through groove 20 is arranged in the wall of the sliding rod 17, the upper surface of the sliding rod 17 is connected with a driver 21 in a sliding mode, the inner surface of the driver 21 is connected with a rotating mechanism 22 in a rotating mode, the bottom of the rotating mechanism 22 is provided with a reciprocating mechanism 24, and the outer surface of the reciprocating mechanism 14 is connected with the outer surface of the sliding rod 17 in a sliding mode through a sliding groove 23.

The reciprocating mechanism 24 comprises a sliding block 30, a fixed rod 31 is fixedly connected in the wall of the sliding block 30, the top end of the fixed rod 31 is fixedly connected with the lower surface of the driver 21, the bottom end of the fixed rod 31 is rotatably connected with an inclined rod 32, the bottom end of the inclined rod 32 is rotatably connected with a pressing plate 34 through an elastic steel sheet 33, the lower surface of the pressing plate 34 is rotatably connected with a roller 35, the outer surface of the roller 35 is contacted with the outer surface of the conveyor belt 14, the top end of the roller 35 is provided with a top rod 36, the top end of the top rod 36 is contacted with the lower surface of the rotating mechanism 22, the outer surface of the top rod 36 is movably connected with a limiting rod 37, the left end of the limiting rod 37 is fixedly connected with the outer surface of the fixed rod 31, the lower surface of the limiting rod 37 is fixedly connected with a compression spring 38, the compression spring 38 is positioned outside the top rod 36, the outer surface of the top rod 36 is fixedly connected with a connecting rod 39, and the connecting rod 39 is positioned at the bottom of the limiting rod 37, the two ends of the connecting rod 39 contact with the outer surface of the diagonal rod 32, the reciprocating mechanism 24 is arranged, when the carton is conveyed from the conveyor belt 14 to the bottom of the stepping mechanism 18, the roller 35 moves upwards, the roller 35 and the conveyor belt 14 block the carton, when the rotating mechanism 22 rotates, the ejector rod 36 reciprocates up and down, the ejector rod 36 extends out and retracts when the carton stops working, the diagonal rod 32 and the pressing plate 34 play a certain protection role while adjusting the height, because the surface area of the roller 35 is larger, the roller 35 has smaller pressure on the upper surface of the carton under the same pressure, and the situation that the carton is warped in the cutting process can be reduced by matching with a nail hole type cutting method, the air suction pipe 53 sucks air downwards under the action of an air pump, the air flow can be sprayed out by the air spraying pipe 54, under the action of vortex, additional pressure is provided by utilizing the downward pressure difference, and the air can also be directly pumped out by the air pump, so that negative pressure is formed inside the outer cover 3, utilize the atmospheric pressure difference to provide extra pressure, the supplementary clamp is tight, has solved traditional corrugated box straight line and has cut thickness fixed, and the problem on limit sticks up easily.

The rotating mechanism 22 comprises a double-head cam 40, a limiting groove 41 is formed in the wall of the double-head cam 40, a rotating rod 42 is movably connected to the inner surface of the limiting groove 41, the bottom end of the rotating rod 42 is rotatably connected with the top end of the ejector rod 36, clamping plates 43 are arranged on two sides of the top end of the rotating rod 42, the outer surfaces of the clamping plates 43 are rotatably connected with the outer surface of the double-head cam 40, a clamping groove 44 is formed in the wall of the clamping plate 43, a clamping block 45 is arranged on the lower left side of the clamping plate 43, the outer surface of the clamping block 45 is rotatably connected with the outer surface of the double-head cam 40, a return spring 46 is fixedly connected in the wall of the clamping block 45, the bottom end of the return spring 46 is fixedly connected with the inner surface of the clamping block 45, the top end of the return spring 46 is rotatably connected with the outer surface of the double-head cam 40, by arranging the rotating mechanism 22, when the double-head cam 40 rotates, the rotating rod 42 slides along the limiting groove 41, the rotating rod 42 drives the ejector rod 36 to move, when the double-head cam 40 is vertical, the splint 43 of bottom contacts with fixture block 45 under the action of gravity, the splint 43 field angle at top increases, along with ejector pin 36 extrusion carton, reaction force promotes bull stick 42 upward movement, bull stick 42 extrudes fixture block 45 in draw-in groove 44, reset spring 46 contracts, the skew takes place for the pivot of fixture block 45, the power arm is less than the resistance arm gradually, under leverage, slewing mechanism 22 blocks and dies, slewing mechanism 22 is along with the rotation unblock of double cam 40, so relapse, utilize gravity and reaction force, under the effect of lever principle, prevent that slewing mechanism 22 from skidding, double cam 40 rotates the round and can work twice, the slow problem of traditional corrugated box cutting equipment work efficiency has been solved.

The pneumatic mechanism 16 comprises a fixed block 50, a screw rod 51 is rotatably connected in the wall of the fixed block 50, the left end of the screw rod 51 is rotatably connected with the inner surface of the connector 11, the outer surface of the screw rod 51 is in threaded connection with the inner surface of the slide rod 17, a branch pipe 52 is connected with the back surface of the screw rod 51, an air suction pipe 53 is fixedly connected with the upper surface of the branch pipe 52, an air jet pipe 54 is fixedly connected with the top end of the branch pipe 52, the air jet pipe 54 is positioned at the top of the conveyor belt 14, the bottom end of the branch pipe 52 is connected with an air pump, through the arrangement of the slide rod 17, when the equipment runs, the stepping mechanism 18 slides left and right along the outer surface of the slide rod 17 under the action of the chute 23, when the transmission shaft 12 rotates, the transmission shaft 12 drives the screw rod 51 to rotate under the action of the connector 11, the screw rod 51 drives the slide rod 17 to move back and forth, because the screw rod 51 is symmetrically arranged at two sides of the fixed block 50, the motion of the slide rod 17 is not influenced by each other, the stepping mechanism 18 can move to any point in the horizontal X axis and the Y axis, under the effect of slewing mechanism 22 and reciprocating mechanism 24, the vertical removal of step mechanism 18, the Z axle also can change, through changing X, Y, Z three point number values, realizes cutting of different thickness and shape, has increased the flexibility, and simultaneously, step mechanism 18 adopts vertical nail hole formula cutting method, when reaching the cutting effect, also can prevent that the carton corner is too sharp, has solved traditional corrugated box straight line cutting range and angle limited to the problem of cut edge cuts easily.

The specific working process is as follows:

when the automatic paper cutting machine works, the stepping mechanism 18 slides left and right along the outer surface of the sliding rod 17 under the action of the sliding chute 23, when the transmission shaft 12 rotates, the transmission shaft 12 drives the screw rod 51 to rotate under the action of the connector 11, the screw rod 51 drives the sliding rod 17 to move back and forth, the screw rod 51 is symmetrically arranged on two sides of the fixed block 50, the movement of the sliding rod 17 is not influenced mutually, the stepping mechanism 18 can move to any point in the stroke on the horizontal X axis and the horizontal Y axis, the stepping mechanism 18 vertically moves under the action of the rotating mechanism 22 and the reciprocating mechanism 24, the Z axis can also be changed, the cutting of different thicknesses and shapes is realized by changing X, Y, Z three-point values, the flexibility is increased, meanwhile, the stepping mechanism 18 adopts a vertical nail hole type cutting method, the cutting effect is achieved, and meanwhile, the corner of a paper box can be prevented from being too sharp;

when the carton is conveyed to the bottom of the stepping mechanism 18 from the conveyor belt 14, the roller 35 moves upwards, the roller 35 and the conveyor belt 14 clamp the carton, when the rotating mechanism 22 rotates, the ejector rod 36 reciprocates up and down, the ejector rod 36 extends out, and retracts when the operation is stopped, the inclined rod 32 and the pressing plate 34 also play a certain protection role while adjusting the height, because the surface area of the roller 35 is larger, the roller 35 has smaller pressure on the upper surface of the carton under the same pressure, and the situation of the carton edge warping in the cutting process can be reduced by matching with a nail hole type cutting method, the air suction pipe 53 draws air downwards under the action of an air pump, the air flow can be sprayed out by the air injection pipe 54, under the action of vortex, additional pressure can be provided by utilizing downward pressure difference, the air pump can also directly draw out, so that negative pressure is formed inside the outer cover 3, and additional pressure is provided by utilizing the air pressure difference to assist in clamping;

when the double-head cam 40 rotates, the rotating rod 42 slides along the limiting groove 41, the rotating rod 42 drives the ejector rod 36 to move, when the double-head cam 40 is vertical, the clamping plate 43 at the bottom is in contact with the clamping block 45 under the action of gravity, the opening angle of the clamping plate 43 at the top is increased, the carton is extruded along with the ejector rod 36, the rotating rod 42 is pushed to move upwards by the reaction force, the clamping block 45 is extruded into the clamping groove 44 by the rotating rod 42, the reset spring 46 contracts, the rotating shaft of the clamping block 45 deviates, the power arm is gradually smaller than the resistance arm, under the action of lever, the rotating mechanism 22 is clamped, the rotating mechanism 22 is unlocked along with the rotation of the double-head cam 40, the operation is repeated, the rotating mechanism 22 is prevented from slipping under the action of the lever principle, and the double-head cam 40 can work twice after rotating for one circle.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An automatic cutting device for corrugated cartons comprises a bracket (1); the method is characterized in that: the top swing joint of support (1) has cutting equipment (2), outside fixedly connected with dustcoat (3) of cutting equipment (2), cutting equipment (2) are including bottom plate (10), the external fixed surface of bottom plate (10) is connected with connector (11), the internal surface rotation of connector (11) is connected with transmission shaft (12), the external fixed surface of transmission shaft (12) is connected with cylinder (13), the external surface rotation of cylinder (13) is connected with conveyer belt (14), open in the wall of conveyer belt (14) and be equipped with inlet port (15).

2. An automated corrugated box cutting apparatus as claimed in claim 1, wherein: the surface of conveyer belt (14) and the internal surface swing joint of bottom plate (10), the surface fixed connection of bottom plate (10) has pneumatic mechanism (16), pneumatic mechanism (16) are located between conveyer belt (14) and bottom plate (10), the both sides swing joint of pneumatic mechanism (16) has slide bar (17), the surface swing joint of slide bar (17) has step mechanism (18), the internal surface of slide bar (17) and the surface sliding connection of bottom plate (10).

3. An automated corrugated box cutting apparatus as claimed in claim 2, wherein: step mechanism (18) are including leading to groove (20), lead to groove (20) and set up in the wall of slide bar (17), the upper surface sliding connection of slide bar (17) has driver (21), the internal surface rotation of driver (21) is connected with slewing mechanism (22), the bottom of slewing mechanism (22) is provided with reciprocating mechanism (24), the surface of reciprocating mechanism (14) passes through the surface sliding connection of spout (23) and slide bar (17).

4. An automated corrugated box cutting apparatus as claimed in claim 3, wherein: the reciprocating mechanism (24) comprises a sliding block (30), a fixed rod (31) is fixedly connected in the wall of the sliding block (30), the top end of the fixed rod (31) is fixedly connected with the lower surface of a driver (21), the bottom end of the fixed rod (31) is rotatably connected with an inclined rod (32), the bottom end of the inclined rod (32) is rotatably connected with a pressing plate (34) through an elastic steel sheet (33), the lower surface of the pressing plate (34) is rotatably connected with a roller (35), the outer surface of the roller (35) is in contact with the outer surface of the conveyor belt (14), a top rod (36) is arranged at the top of the roller (35), the top end of the top rod (36) is in contact with the lower surface of the rotating mechanism (22), a limiting rod (37) is movably connected with the outer surface of the top rod (36), and the left end of the limiting rod (37) is fixedly connected with the outer surface of the fixed rod (31), the lower surface fixedly connected with compression spring (38) of gag lever post (37), compression spring (38) are located the outside of ejector pin (36), the external fixed surface of ejector pin (36) is connected with connecting rod (39), connecting rod (39) are located the bottom of gag lever post (37), the both ends of connecting rod (39) contact with the surface of down tube (32).

5. An automated corrugated box cutting apparatus as claimed in claim 3, wherein: the rotating mechanism (22) comprises a double-head cam (40), a limit groove (41) is arranged in the wall of the double-head cam (40), the inner surface of the limit groove (41) is movably connected with a rotating rod (42), the bottom end of the rotating rod (42) is rotatably connected with the top end of the top rod (36), clamping plates (43) are arranged on two sides of the top end of the rotating rod (42), the outer surfaces of the clamping plates (43) are rotationally connected with the outer surface of the double-head cam (40), a clamping groove (44) is arranged in the wall of the clamping plate (43), a clamping block (45) is arranged at the lower left of the clamping plate (43), the outer surface of the clamping block (45) is rotationally connected with the outer surface of the double-head cam (40), a return spring (46) is fixedly connected in the wall of the clamping block (45), the bottom end of the return spring (46) is fixedly connected with the inner surface of the clamping block (45), the top end of the return spring (46) is rotationally connected with the outer surface of the double-head cam (40).

6. An automated corrugated box cutting apparatus as claimed in claim 2, wherein: pneumatic mechanism (16) are including fixed block (50), it is connected with screw rod (51) to rotate in the wall of fixed block (50), the left end of screw rod (51) rotates with the internal surface of connector (11) to be connected, the surface of screw rod (51) and the internal surface threaded connection of slide bar (17), the back story of screw rod (51) is connected with fork (52), the last fixed surface of fork (52) is connected with breathing pipe (53), the top fixedly connected with jet-propelled pipe (54) of fork (52), jet-propelled pipe (54) are located the top of conveyer belt (14), the bottom and the air pump of fork (52) are connected.