阅读说明：本技术 一种网格塑料板去毛刺机 (Grid plastic plate deburring machine ) 是由 徐学花 于 2021-08-24 设计创作，主要内容包括：本发明属于网格塑料板加工领域,尤其是涉及一种网格塑料板去毛刺机,包括底座,电机,输送模块,切割组件,毛刺塑料回收结构,其特征在于,所述底部底座为截面为日字形的长方体,所述底部底座一侧设有电机底座,所述电机底座上方固设有电机,所述底部底座两侧边缘上方分别设有挡板,每所述挡板中部设有调刀窗口,所述调刀窗口内设有切割组件,所述挡板下部靠近所述底部底座处设有光电感应窗口,所述底部底座内部设有输送模块,所述电机带动所述输送模块,在所述输送模块下方设有毛刺塑料回收结构本发明可以自动干净的切掉网格塑料板中格子边缘的飞边、毛刺,清理过程中无需人工,效率高的同时降低了工人受伤的风险。(The invention belongs to the field of grid plastic plate processing, and particularly relates to a deburring machine for a grid plastic plate, which comprises a base, a motor, a conveying module, a cutting assembly and a burr plastic recovery structure, and is characterized in that the bottom base is a cuboid with a section in a shape of Chinese character ri, the motor base is arranged on one side of the bottom base, the motor is fixedly arranged above the motor base, baffles are respectively arranged above the edges of two sides of the bottom base, a knife adjusting window is arranged in the middle of each baffle, the cutting assembly is arranged in the knife adjusting window, a photoelectric sensing window is arranged at the lower part of each baffle close to the bottom base, the conveying module is arranged in the bottom base, the motor drives the conveying module, and the burr plastic recovery structure is arranged below the conveying module, so that burrs and burrs at the edges of grids in the grid plastic plate can be automatically and cleanly cut off, need not artifical in the clearance process, the injured risk of workman has been reduced when efficient.)

1. A grid plastic plate deburring machine comprises a bottom base (1), a motor (2), a conveying module, a cutting assembly and a burr plastic recycling structure, and is characterized in that the bottom base (1) is a cuboid with a section shaped like a Chinese character 'ri', one side of the bottom base (1) is provided with the motor base (3), the motor (2) is fixedly arranged above the motor base (3), baffle plates (4) are respectively arranged above the edges of two sides of the bottom base (1), the middle part of each baffle plate (4) is provided with a cutter adjusting window (5), the cutting assembly is arranged in each cutter adjusting window (5), the lower part of each baffle plate (4) close to the bottom base (1) is provided with a photoelectric sensing window (30), each photoelectric sensing window (30) is internally provided with a correlation photoelectric sensor, the conveying module is arranged in the bottom base (1), and the motor (2) drives the conveying module, and a burr plastic recovery structure is arranged below the conveying module.

2. The machine for deburring grid plastic plates as claimed in claim 1, wherein: the conveying module comprises a plurality of conveyor belt rollers (32) which are arranged at equal intervals along the long side direction of the bottom base (1), ribs are arranged at equal intervals on the surface circumferences of the first conveyor belt roller (32) and the last conveyor belt roller (32), a conveyor belt roller shaft (35) is coaxially arranged in the conveyor belt rollers (32) in a rotating mode, a plurality of conveyor belt plates (33) are arranged at equal intervals on the outer surface of the conveyor belt rollers (32), each conveyor belt plate (33) is provided with conveyor belt plate connecting pieces (34) on two sides, and the conveyor belt plates (33) face opposite side surfaces of the conveyor belt rollers (32) and are fixedly provided with separation propulsion plates (31) at certain intervals.

3. The machine for deburring grid plastic plates as claimed in claim 2, wherein: the conveyor belt plates (33) are in meshed transmission on the surfaces of the first and the last conveyor belt rollers (32), each conveyor belt roller (32) is in chain transmission, the motor (2) is connected with the first conveyor belt roller (32), and each conveyor belt plate (33) is in rotary connection through a conveyor belt plate connecting piece (34).

4. The machine for deburring grid plastic plates as claimed in claim 1, wherein: the cutting assembly comprises screw holes (6) arranged at the upper side and the lower side of a cutter adjusting window (5), each screw hole (6) is internally and coaxially provided with a screw (7), the end surface of the screw (7) facing the upside at the lower side is fixedly provided with a lower cutter bearing plate (8), the end surface of the screw (7) at the upper side, which is smoothly shared by the screw, is fixedly provided with an upper cutter bearing plate (9), a plane cutter (10) is arranged between the lower cutter bearing plate (8) and the upper cutter bearing plate (9), the bottom surface of the plane cutter (10) is a planar right trapezoid, cutter dropping hydraulic cylinder bases (38) are respectively and fixedly arranged at the two sides of the bottom base (1) after the cutter adjusting window (5), cutter dropping hydraulic cylinders (11) are respectively and fixedly arranged at the upper end surface of each cutter dropping hydraulic cylinder base (38), and a cutter dropping hydraulic cylinder push rod (39) is arranged in each cutter dropping hydraulic cylinder (11) in a sliding sealing manner, a cutter dropping truss plate (12) is fixedly connected above the cutter dropping hydraulic cylinder push rod (39), an air box (15) is arranged below the falling knife truss plate (12), a one-way valve (14) is arranged on one side wall of the air box (15), an air chamber (37) is arranged in the air box (15), a piston plate (36) is arranged in the air chamber (37) in a sliding and sealing mode, two holes are symmetrically formed in the upper wall of the air box (15) above the piston plate (36) by taking the center line as an axis, a cutter falling piston column (13) is arranged in each hole in a sliding and sealing mode, one end of the cutter falling piston column (13) facing the air chamber (37) is fixedly connected with the piston plate (36), one end of the piston (13) facing to the opposite side of the air chamber is fixedly connected with the falling knife truss plate (12), the bottom of the air box (15) is in a grid shape with small aperture, and a grid edge burr cutter (16) is arranged in each grid in a sliding sealing mode.

5. The machine for deburring grid plastic plates as claimed in claim 4, wherein: the grid edge burr cutting knife (16) comprises three parts, wherein the first part is a double-end piston push rod (19), the second part is a grid edge burr cutting knife shell (28), the third part is a piston hollow knife rod (29) and a grid edge burr cutting knife head (26), a piston head of the double-end piston push rod (19) is arranged in the air box (15) in a sliding and sealing mode, a first air cavity (20) is arranged in the grid edge burr cutting knife shell (28) and close to one end of the air box (15), a second air cavity (22) is arranged below the first air cavity (20), the other piston head of the double-end piston push rod (19) is arranged in the first air cavity (20) and close to one end of the air box (15) in a sliding and sealing mode, the piston hollow knife rod (21) is arranged in the first air cavity (20) and close to one end of the second air cavity (22) in a sliding and sealing mode, the piston head (21) is arranged above the piston hollow knife rod (21) and close to the second air cavity (22) ) The air-conditioning device is characterized in that a first air inlet hole (40) is formed in one side wall of the first air cavity (40), the second air cavity (22) is internally provided with the piston hollow cutter bar (29) in a sliding sealing mode, the piston hollow cutter bar (29) is fixed with the piston head (21) of the piston hollow cutter bar in a sealing mode, an air passage (23) is formed in the piston hollow cutter bar (29), the four walls, close to the first air cavity (20), of the second air cavity (22) are respectively provided with a second air inlet hole (24), the four walls, above the lower end outlet of the second air cavity (22), of the piston hollow cutter bar (29) are respectively provided with a third air inlet hole (25), the lower end face of the piston hollow cutter bar (29) is fixedly provided with a grid edge burr cutter head (26), and an air outlet (27) is formed in the grid edge burr cutter head (26).

6. The machine for deburring grid plastic plates as claimed in claim 5, wherein: grid edge burr cutter head (26) are the square body for the outer wall, and the below is the shape that the cutting edge upwards thickens gradually, gas outlet (27) with air flue (23) intercommunication.

7. The machine for deburring grid plastic plates as claimed in claim 1, wherein: burr plastics retrieve structure is for setting up cutting assembly the high rear low inclined plane (18) in place ahead, inclined plane (18) least significant end is equipped with burr plastics and retrieves door (17).

Technical Field

The invention belongs to the field of grid plastic plate processing, and particularly relates to a deburring machine for a grid plastic plate.

Background

The flash is also called as flash, burr, etc., and mostly occurs at the parting and joining position of the mold, such as the parting surface of the movable mold and the static mold, the sliding fit position of the slide block, the clearance of the insert, the hole of the ejector rod, etc., and the flash is caused by the failure of the mold locking force of the mold or the machine table to a great extent. Generally, it is impossible to absolutely prevent the plastic part from generating the flash due to various factors, and the plastic part is manually removed in a general treatment manner after the flash is generated, and the manual removal takes a lot of time and is not necessarily capable of being cleaned up and easily causes injury to workers.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a deburring machine for grid plastic plates.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a net plastic slab burr-grinding machine, includes the base, the motor, carries the module, the cutting subassembly, burr plastics recovery structure, the bottom base is the cuboid that the cross-section is "day" font, bottom base one side is equipped with the motor base, motor base top has set firmly the motor, bottom base both sides edge top is equipped with the baffle respectively, every the baffle middle part is equipped with the accent sword window, be equipped with the cutting subassembly in the accent sword window, the baffle lower part is close to bottom base department is equipped with the photoelectric sensing window, be equipped with correlation photoelectric sensing ware in the photoelectric sensing window, the inside transport module that is equipped with of bottom base, the motor drives carry the module the transport module below is equipped with burr plastics recovery structure.

Preferably, the conveying module comprises a plurality of conveyor belt rollers which are arranged at equal intervals along the long side direction of the bottom base, the circumferences of the first and last conveyor belt rollers are provided with convex ribs at equal intervals, a conveyor belt roller shaft is coaxially arranged inside each conveyor belt roller in a rotating mode, a plurality of conveyor belt plates are arranged on the outer surface of each conveyor belt roller at equal intervals, conveyor belt plate connecting pieces are arranged on two sides of each conveyor belt plate, and separation pushing plates are fixedly arranged on the opposite side surfaces of the conveyor belt plates facing the conveyor belt rollers at certain intervals.

Preferably, the belt plates are in meshing transmission on the surfaces of the first and last belt rollers, each belt roller is in transmission through a chain, the motor is connected with the first belt roller, and each belt plate is in rotary connection through the belt plate connecting piece.

Preferably, the cutting assembly comprises screw holes arranged at the upper side and the lower side of the knife adjustment window, a screw is coaxially arranged in each screw hole, a lower knife bearing plate is fixedly arranged on the end surface of the lower side of the screw facing to the upper side, an upper knife bearing plate is fixedly arranged on the end surface of the upper side of the screw facing to the lower side of the knife adjustment window, a plane cutter is arranged between the lower knife bearing plate and the upper knife bearing plate, the bottom surface of the plane cutter is a planar right trapezoid, knife dropping hydraulic cylinder bases are fixedly arranged on the two sides of the bottom base respectively behind the knife adjustment window, knife dropping hydraulic cylinders are fixedly arranged on the upper end surface of each knife dropping hydraulic cylinder base respectively, a knife dropping hydraulic cylinder push rod is arranged in each knife dropping hydraulic cylinder in a sliding sealing manner, a knife dropping truss plate is fixedly connected above the knife hydraulic cylinder push rod, an air box is arranged below the knife dropping truss plate, one side wall of the air box is provided with a one-way valve, and an air chamber is arranged in the air box, sliding seal is equipped with the piston board in the air chamber, piston board top the air tank upper wall uses the central line to open as axisymmetric has two holes, and downthehole sliding seal is equipped with the piston post that falls, the piston post orientation that falls the air chamber one end fixed connection the piston board, the orientation of piston the air chamber offside one end with the truss plate fixed connection that falls, the air tank bottom is the very little latticed in aperture, and every equal sliding seal in net is equipped with a net edge burr cutter.

Preferably, the grid edge burr cutter comprises three parts, the first part is a double-end piston push rod, the second part is a grid edge burr cutter shell, the third part is a piston hollow cutter bar and a grid edge burr cutter head, a piston head of the double-end piston push rod is arranged in the air box in a sliding and sealing manner, a first air cavity is arranged at one end, close to the air box, in the grid edge burr cutter shell, a second air cavity is arranged below the first air cavity, the other piston head of the double-end piston push rod is arranged at one end, close to the air box, of the first air cavity in a sliding and sealing manner, a piston head of the piston hollow cutter bar is arranged above the piston hollow cutter bar, a first air inlet hole is arranged on one side wall of the first air cavity, close to the second air cavity, and the piston hollow cutter bar is arranged in the second air cavity in a sliding and sealing manner, the piston hollow cutter bar and the piston head of the piston hollow cutter bar are fixed in a sealing mode, an air passage is arranged inside the piston hollow cutter bar, a second air inlet hole is formed in each of the four walls of the second air cavity close to the first air cavity, a third air inlet hole is formed in each of the four walls of the piston hollow cutter bar above the lower end outlet of the second air cavity, a grid edge burr cutter head is fixedly arranged on the lower end face of the piston hollow cutter bar, and an air outlet is formed in each grid edge burr cutter head.

Preferably, the grid edge burr cutter head is the outer wall and is the square body, and the below is the shape that the cutting edge upwards thickens gradually, the gas outlet with the air flue intercommunication, first air cavity is located in the gas tank.

Preferably, burr plastics are retrieved the structure and are in for setting up the low inclined plane in the high rear in cutting assembly the place ahead, the inclined plane minimum is equipped with burr plastics and retrieves bin gate.

Has the advantages that:

1. the invention is provided with a longer conveying module, and can use a manipulator on an injection molding machine to place the molded plastic grid plate on the conveying module, thereby realizing full-automatic operation.

2. The height and the levelness of the plane cutter can be adjusted, the plane cutter can be suitable for grid plates with plate surfaces of different heights, burrs and fins on the upper surface are cut off under the action of the horizontal cutter under the pushing of the separating pushing plate, and the grid edge burr cutter adopts a plurality of small cutters which can be separated and move up and down, so that edge burrs of different grid shapes can be cut off.

3. The invention runs automatically in the whole process, the most dangerous cutting part does not need manual operation, and the risk of injury of workers can be avoided.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view B of FIG. 2;

FIG. 5 is an elevation view of a grid edge cutter of the present invention;

FIG. 6 is a cross-sectional view C-C of FIG. 5;

FIG. 7 is an enlarged view of FIG. 6 at D;

in the figure: the device comprises a bottom base 1, a motor 2, a motor base 3, a baffle 4, a knife adjusting window 5, a screw hole 6, a screw 7, a lower knife bearing plate 8, an upper knife bearing plate 9, a plane cutter 10, a knife dropping hydraulic cylinder 11, a knife dropping truss plate 12, a knife dropping piston column 13, a one-way valve 14, an air box 15, a grid edge burr cutter 16, a burr plastic recycling bin door 17, a burr plastic recycling bin bottom inclined plane 18, a double-end piston push rod 19, a first air cavity 20, a piston hollow knife rod 21, a second air cavity 22, an air channel 23, a first air inlet 24, a third air inlet 25, a grid edge burr cutter head 26, an air outlet 27, a grid edge burr cutter shell 28, a piston hollow knife rod 29, an optoelectronic induction window 30, a separation pushing plate 31, a conveyor belt roller 32, a conveyor belt plate 33, a conveyor belt plate connector 34, a roller conveyor belt shaft 35, a piston plate 36, an air chamber 37, a knife dropping hydraulic cylinder base 38, a knife dropping hydraulic cylinder base, a knife edge, a knife dropping plastic recycling bin, a knife dropping knife, a knife, A knife falling hydraulic cylinder push rod 39 and a first air inlet hole 40.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-7, a net plastic slab burr-grinding machine, including base 1, motor 2, transport module, cutting assembly, burr plastics retrieves the structure, bottom base 1 is the cuboid that the cross-section is the shape of day font, 1 one side of bottom base is equipped with motor base 3, motor base 3 top has set firmly motor 2, 1 both sides edge top in bottom base is equipped with baffle 4 respectively, 4 middle parts of per baffle are equipped with accent sword window 5, be equipped with cutting assembly in the accent sword window 5, 4 lower parts of baffle are close to bottom base 1 department and are equipped with photoelectric sensing window 30 behind the cutting assembly, be equipped with the correlation photoelectric sensing ware in the photoelectric sensing window 30, the inside transport module that is equipped with of bottom base 1, motor 2 drives transport module, be equipped with burr plastics and retrieve the structure below transport module.

The conveying module comprises a plurality of conveyor belt rollers 32 which are arranged at equal intervals along the long side direction of the bottom base 1, convex ribs are arranged on the first surface and the last surface of each conveyor belt roller 32 at equal intervals, a conveyor belt roller shaft 35 is coaxially arranged inside each conveyor belt roller 32 in a rotating mode, a plurality of conveyor belt plates 33 are arranged on the outer surface of each conveyor belt roller 32 at equal intervals, conveyor belt plate connecting pieces 34 are arranged on two sides of each conveyor belt plate 33, and a separation pushing plate 31 is fixedly arranged on the opposite side surface, facing the conveyor belt rollers 32, of each conveyor belt plate 33 at a certain interval.

The belt plates 33 are driven in engagement with the first and last surfaces of the belt rollers 32, each belt roller 32 is driven by a chain, the motor 2 is connected to the first one of the belt rollers 32, and each belt plate 33 is rotatably connected to each other by a belt plate connecting member 34.

The cutting assembly comprises screw holes 6 arranged at the upper side and the lower side of a knife adjusting window 5 of the knife adjusting window, a screw 7 is coaxially arranged in each screw hole 6, a lower knife bearing plate 8 is fixedly arranged on the end surface of the lower screw 7 facing the upper side, an upper knife bearing plate 9 is fixedly arranged on the end surface of the lower side, which the upper screw 7 is smooth, a plane cutter 10 is arranged between the lower knife bearing plate 8 and the upper knife bearing plate 9, the bottom surface of the plane cutter 10 is a planar right trapezoid, a knife dropping hydraulic cylinder base 38 is fixedly arranged at the two sides of a bottom base 1 after the knife adjusting window 5, a knife dropping hydraulic cylinder 11 is fixedly arranged at the upper end surface of each knife dropping hydraulic cylinder base 38, a knife dropping hydraulic cylinder push rod 39 is arranged in each knife dropping hydraulic cylinder 11 in a sliding and sealing manner, a knife dropping truss plate 12 is fixedly connected above the knife dropping hydraulic cylinder push rod 39, an air box 15 is arranged below the knife dropping truss plate 12, a one-way valve 14 is arranged on one side wall of the air box 15, an air chamber 37 is arranged in the air box 15, the air chamber 37 is provided with a piston plate 36 in a sliding sealing manner, the upper wall of the air box 15 above the piston plate 36 is symmetrically provided with two holes by taking a central line as an axis, a cutter falling piston column 13 is arranged in each hole in a sliding sealing manner, one end of the cutter falling piston column 13 facing the air chamber 37 is fixedly connected with the piston plate 36, one end of the piston 13 facing the opposite side of the air chamber is fixedly connected with the cutter falling truss plate 12, the bottom of the air box 15 is in a grid shape with small aperture, and each grid is provided with a grid edge burr cutter 16 in a sliding sealing manner.

The grid edge burr cutter 16 comprises three parts, wherein the first part is a double-end piston push rod 19, the second part is a grid edge burr cutter shell 28, the third part is a piston hollow cutter bar 29 and a grid edge burr cutter head 26, a piston head of the double-end piston push rod 19 is arranged in the air box 15 in a sliding and sealing manner, a first air cavity 20 is arranged at one end, close to the air box 15, in the grid edge burr cutter shell 28, a second air cavity 22 is arranged below the first air cavity 20, the other piston head of the double-end piston push rod 19 is arranged at one end, close to the air box 15, of the first air cavity 20 in a sliding and sealing manner, a piston hollow cutter bar piston head 21 is arranged above the piston hollow cutter bar piston head 21 in the sliding and sealing manner, a first air inlet hole 40 is arranged on one side wall of the first air cavity 40, close to the second air cavity 22, and a piston hollow cutter bar 29 is arranged in the second air cavity 22 in a sliding and sealing manner, the piston hollow cutter bar 29 is fixed with the piston head 21 of the piston hollow cutter bar in a sealing way, an air passage 23 is arranged in the piston hollow cutter bar 29, a second air inlet 24 is respectively arranged on the four walls of the second air cavity 22 close to the first air cavity 20, a third air inlet 25 is respectively arranged on the four walls of the piston hollow cutter bar 29 above the lower end outlet of the second air cavity 22, a grid edge burr cutter head 26 is fixedly arranged on the lower end face of the piston hollow cutter bar 29, an air outlet 27 is arranged in the grid edge burr cutter head 26, and the first air cavity 20 is positioned in the air box 15.

The grid edge burr cutter head 26 is a square body with an outer wall, the lower part is in a shape that the cutting edge gradually thickens upwards, and the air outlet 27 is communicated with the air passage 23.

The burr plastics recycling structure is an inclined plane 18 which is arranged at the high rear part in front of the cutting assembly and is low, and the lowest end of the inclined plane 18 is provided with a burr plastics recycling bin gate 17.

The working principle is as follows: the one end that motor 2 place is the feeding district, namely the front end of the device, the plastics net board is taken off at the manipulator of injection molding machine and is put between two separation propulsion boards 31 after coming out from the injection molding machine, get into the workspace under the promotion of separation propulsion board 31, confirm the height of the plastics net board that will cut before equipment starts, through the upper and lower height of the screw rod 7 that the adjustment lies in accent sword window 5, thereby reach the adjustment and hold sword board 8 under, thereby the height and the levelness of adjustment plane cutter 10 in gap and position between the upper knife board 9, confirm that the adjustment fixes starting equipment behind the plane cutter 10, put into the plastics net board that needs to cut height.

The plastic grid plate advances under the push of the separating pushing plate 31, when the plastic grid plate passes through the plane cutter 10 with adjusted height, burrs on the upper surface of the plastic grid plate, excess materials such as injection plastic part frame and the like are cut off, the gap between the separating pushing plates 31 is the width of a cutting assembly, after the previous separating pushing plate 31 reaches the photoelectric sensing window 30, an internal correlation photoelectric sensor is blocked, an electric signal is sent to enable a falling knife hydraulic cylinder push rod 39 to retract so as to enable the whole air box 15 and all assemblies therein to descend, when a grid edge burr cutter head 26 contacts a grid plastic plate, the falling knife truss plate 12 and a falling knife piston column 13 are pressed downwards, so that a piston plate 36 descends to enable the space in an air chamber 37 to be pressed, a double-head piston push rod 19 moves downwards, because the first air chamber 20 is positioned in the air box 15, the pressed air in the air box 15 enters the first air chamber 20 through a first air inlet hole 40, the grid edge burr cutter head 26 is always supported on the upper surface of the plastic grid plate, the grid plate in the plastic grid plate is subjected to strength detection under the action of continuously pressurized gas in the gas box 15, when the gas box 15 is continuously lowered to the second gas inlet hole 24, the high-pressure gas in the gas box 15 enters the second gas cavity 22, when the high-pressure gas enters the gas channel 23 from the third gas inlet hole 25, the gas is blown out from the gas outlet 27, simultaneously, the grid edge burr cutter head 26 can have enough force to cut off burrs at the grid edge of the grid plastic plate under the action of the high-pressure gas in the first gas cavity 2O, the chips are blown off by the gas blown out from the gas blowing hole 27, because the conveyor belt plate 33 and the conveyor belt roller 32 are arranged at intervals, a gap is arranged in the middle, and the plane cutter 10 is in a right-angle trapezoid shape, the chips on the cut-off upper surface can fall onto the inclined plane 18 at the bottom of the burr plastic recovery bin arranged below from the gaps, when the scraps are accumulated too much, the burr plastic recovery bin door 17 can be opened to recover the plastic scraps in the burr plastic recovery bin door, after the cutting is finished, the knife falling hydraulic cylinder push rod 39 rises to drive the whole cutting assembly to rise, all the assemblies in the air tank 15 return, and meanwhile, the lost air in the air tank 15 is supplemented under the action of the one-way valve 14.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.