CN112340111A

CN112340111A - Carton packaging machine

Info

Publication number: CN112340111A
Application number: CN202011297053.6A
Authority: CN
Inventors: 贺晓辉; 杨艳; 游青山; 陈浩; 赵世纪; 冷泉清
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-02-09
Anticipated expiration: 2040-11-19
Also published as: CN112340111B

Abstract

A carton packaging machine realizes automatic bending closing of a carton through a carton sealing module and then realizes adhesive tape packaging of the carton by using an adhesive tape module; the method comprises the following steps: the machine frame is used for conveying the paper boxes; the carton sealing module is used for bending and gathering folded plates opened on the carton so as to seal the carton; the adhesive tape module is used for adhering an adhesive tape on the carton and moving the adhesive tape to complete the adhesion of the carton; when the carton sealing machine is used, the carton is conveyed by the rack, the carton sealing module is used for sealing the folded plate on the carton, and the adhesive tape module is used for packaging the carton through the adhesive tape. The automatic carton boxing and packaging machine is simple in structure, and can realize full automation of boxing and packaging of products and cartons by combining with an automatic carton unpacking machine and an automatic carton packing machine. The box sealing module can realize automatic bending and box sealing of the folded plate, thereby providing a foundation for subsequent adhesive tape packaging. The adhesive tape module can realize that the adhesive tape is automatically adhered to the gap at the folded part of the folded plate of the carton, thereby realizing automatic packaging.

Description

Carton packaging machine

Technical Field

The invention relates to a carton packaging technology, in particular to a carton packaging machine.

Background

Along with the increasing development of the packaging industry and the express delivery industry, the adhesive tape packaging of the carton becomes one of the problems that the carton packaging is seriously influenced at present, and the cross-shaped adhesive tape is required to be pasted on the carton based on the carton packaging so as to be reinforced and packaged. At present, the process is mainly operated manually, and the reason is mainly that four folding plates of the carton need to be bent in place (closed) manually, and the adhesive tape is only carried along at the moment, so that the carton does not need to be placed into equipment for packaging through automatic adhesive tape equipment. However, the prior art can automatically load goods into the carton and then realize full-automatic operation by combining the equipment for automatically closing the carton and the adhesive tape equipment, and the prior problem is that the goods are just clamped on the carton after being automatically packed.

The inventor designs a carton packaging machine, which realizes automatic bending and closing of a carton through a carton sealing module and then realizes adhesive tape packaging of the carton by utilizing an adhesive tape module.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a carton packaging machine.

To achieve the above object, the present invention provides a carton packaging machine comprising:

the machine frame is used for conveying the paper boxes;

the carton sealing module is used for bending and gathering folded plates opened on the carton so as to seal the carton;

the adhesive tape module is used for adhering an adhesive tape on the carton and moving the adhesive tape to complete the adhesion of the carton;

the box sealing device comprises a rack, a box sealing module and a box sealing module, wherein the rack comprises two first vertical plates and two pairs of second vertical plates which are arranged in parallel, each pair of second vertical plates comprises two second vertical plates which are arranged in parallel, an included angle is formed between the two pairs of second vertical plates, a first conveying belt and a second conveying belt are respectively arranged between the two first vertical plates and the two second vertical plates, the box sealing module is arranged between the first conveying belt and the second conveying belt close to the first conveying belt, and the adhesive tape modules are respectively arranged on each pair of second vertical plates;

corners are installed at the joints of the two pairs of second vertical plates, the top surface of the corner plate is not higher than that of the second conveying belt, a pushing plate groove is formed in the position, located on the corner plate, of one second vertical plate, a pushing plate frame is installed on the outer side of the pushing plate groove, a hollow pushing plate sliding groove is formed in the inner side of the pushing plate frame, the pushing plate sliding groove penetrates through the pushing plate frame and is communicated with the pushing plate groove, a pushing plate is installed in the pushing plate sliding groove in a clamping and sliding mode, and the pushing plate can penetrate out of the pushing plate and then enters the top of the corner plate, so that a carton is pushed to.

Preferably, one end of the push plate sliding groove, which is far away from the push plate groove, is sealed by an end plate, the push plate is respectively assembled with one end of a push plate telescopic shaft and one end of a push plate guide shaft, and the other end of the push plate telescopic shaft penetrates out of the end plate and then is installed in a push plate electric cylinder; the other end of the push plate guide shaft penetrates through the end plate and can be axially assembled with the end plate in a sliding mode.

Preferably, the box sealing module comprises a box sealing top plate and a box sealing sliding seat, and the box sealing top plate is installed on the box sealing side plate; the box sealing device is characterized in that a box sealing sliding seat is mounted on the box sealing top plate, a box sealing sliding groove is formed in the box sealing sliding seat, the box sealing sliding groove is clamped with a box sealing sliding block and can be assembled in a sliding mode, the box sealing sliding block is arranged on a box sealing rack, two box sealing racks are arranged and are respectively meshed with two sides of a box sealing gear to form a gear rack transmission mechanism, the box sealing gear can be sleeved on a box sealing gear shaft in a circumferential rotating mode, and the box sealing gear shaft is mounted on the box sealing sliding seat;

one end of each of the two box sealing racks is fixedly assembled with two different box sealing side plates respectively, and each box sealing side plate is fixedly connected with the box sealing mounting plate through a box sealing lower pressing plate; the box sealing side plates are sleeved on a box sealing side plate shaft in an axially sliding manner, two ends of the box sealing side plate shaft are respectively assembled with a box sealing support plate, and one box sealing side plate is assembled with one end of a box sealing telescopic shaft of the box sealing electric cylinder;

the carton sealing device comprises a carton sealing mounting plate, a carton sealing guide shaft, a carton sealing nut, a carton sealing spring and a carton sealing spring, wherein the carton sealing mounting plate is provided with a carton sealing travel switch, the triggering end of the carton sealing travel switch is opposite to the carton sealing induction plate, the carton sealing induction plate is assembled with one end of the carton sealing guide shaft, the other end of the carton sealing guide shaft penetrates through the carton sealing mounting plate and then is assembled with the carton sealing nut, the carton sealing nut cannot penetrate through the carton sealing mounting plate, the part, located between the carton sealing mounting plate and the carton sealing induction plate, of the carton sealing guide shaft is sleeved with the carton sealing spring, the carton sealing spring is used for applying elastic force for preventing the carton sealing induction plate from moving towards the carton sealing mounting plate, so that the carton sealing travel switch is in an unfired state when the carton sealing travel switch is triggered, the two carton sealing induction plates are judged to be mutually pressed, namely;

the joint of the sealing box lower pressing plate and the sealing box mounting plate is provided with a lower pressing inclined plane, and the lower pressing inclined plane is arranged from one end connected with the sealing box mounting plate to the other end of the sealing box lower pressing plate in a gradually downward inclined mode.

Preferably, the automatic box sealing machine further comprises a rotating mechanism, wherein the rotating mechanism comprises a box sealing bottom plate, a box sealing seat, a box sealing support plate and a box sealing vertical plate are arranged on the box sealing bottom plate, a box sealing top plate and a box sealing transverse plate are respectively arranged on the box sealing support plate and the box sealing vertical plate, the box sealing transverse plate and the box sealing bottom plate are respectively assembled with two box sealing screws in a circumferential rotating mode and in an axial non-moving mode, the two box sealing screws penetrate through the box sealing bottom plate and then are respectively assembled with two different box sealing screw belt pulleys, and the two box sealing screw belt pulleys are connected through a box sealing screw belt to form a belt transmission mechanism; two sealing box screws respectively penetrate through the sealing box lifting plate and are assembled with the sealing box lifting plate in a screwing mode through threads; the sealing lifting plates are arranged on two sides of the sealing conveying belt respectively, sealing guide plates are arranged on two sides of the two sealing lifting plates respectively, and the two sealing guide plates can be used for smoothly connecting the top surfaces of the first conveying belt and the sealing conveying belt, and the top surfaces of the sealing conveying belt and the second conveying belt respectively.

Preferably, the box sealing transverse plate and the box sealing bottom plate are respectively assembled with two ends of two screw guide shafts, and the two screw guide shafts penetrate through the box sealing lifting plate and are assembled with the box sealing lifting plate in an axial sliding manner;

a first bevel gear is mounted on one box sealing screw rod, the first bevel gear is in meshing transmission with a first second bevel gear, the first second bevel gear is sleeved on a lifting power shaft, two ends of the lifting power shaft can rotate circumferentially with a first box sealing shaft plate and a second box sealing shaft plate respectively, and the first box sealing shaft plate and the second box sealing shaft plate are mounted on a box sealing bottom plate; the lifting power shaft is further sleeved with a second bevel gear, the second bevel gear is in meshing transmission with the second first bevel gear, the second first bevel gear is sleeved on a lifting output shaft, the lifting output shaft is arranged in the box sealing base and can rotate circumferentially and can not move axially, a box sealing base groove is formed in the box sealing base, a worm part is arranged on the part, located in the box sealing base groove, of the lifting output shaft, and the worm part is meshed with a worm wheel to form a worm and gear transmission mechanism; one end of the lifting output shaft penetrates out of the packaging base and then is connected with an output shaft of the lifting motor; the worm wheel is sleeved or arranged on the rotating main shaft, the top of the rotating main shaft is fixedly assembled with the rotating seat, and the bottom of the rotating main shaft is circumferentially and rotatably assembled with the box sealing base.

Preferably, two main shaft locking grooves distributed at an included angle are formed in the bottom of the rotating main shaft, and the main shaft locking grooves can be clamped and assembled with the main shaft locking block, so that the rotating main shaft is locked in the circumferential direction; the spindle locking block is arranged at one end of the locking rod, the other end of the locking rod is sleeved with a locking rod spring and fixedly assembled with a locking rod nut after penetrating through the spring partition plate, the locking rod nut cannot penetrate through the spring partition plate, and the spring partition plate is arranged on the box sealing bottom plate; the lock rod spring is used for applying elastic force for pushing the main shaft lock block to the main shaft lock groove; and two sides of the main shaft locking block are respectively provided with a locking block inclined plane.

Preferably, the rotating seat is provided with two rotating seat plates which are arranged in parallel, the two rotating seats are respectively assembled with a rotating guide rod, and the rotating guide rod respectively passes through the rotating side shifting plate and the rotating conveying frame and can be axially assembled with the rotating side shifting plate and the rotating conveying frame in a sliding manner;

a side shifting limiting plate and a side shifting connecting plate are respectively arranged at two ends of the rotary side shifting plate, and a side shifting push plate is arranged on the side shifting connecting plate; the rotary conveying frame is provided with two parallel rotary conveying plates, the two rotary conveying plates are respectively assembled with two rotary belt wheel shafts in a circumferential rotating mode, rotary belt wheels are sleeved on the rotary belt wheel shafts, the two rotary belt wheels are connected through a box sealing conveying belt to form a belt transmission mechanism, one of the rotary belt wheel shafts is also assembled with a first rotary belt wheel, the first rotary belt wheel is connected with a second rotary belt wheel through a rotary belt to form the belt transmission mechanism, the second rotary belt wheel is sleeved on a rotary conveying motor shaft, and the rotary conveying motor shaft is installed in the rotary conveying motor;

the rotary base plate and the rotary conveying plate are respectively assembled with a side-shifting screw rod in a circumferential rotation mode and in a non-axial movement mode, and one end of the side-shifting screw rod is installed in a side-shifting motor; the side shift screw rod penetrates through one of the rotary side shift plates and is assembled with the rotary side shift plate in a screwing way through threads; the two rotating side shifting plates are respectively arranged on two sides of the box sealing conveying belt, the bottoms of the two rotating side shifting plates are respectively laterally shifted with different rotating racks, the two rotating side shifting racks are respectively meshed with two sides of the rotating side shifting teeth to form a gear and rack transmission mechanism, the rotating side shifting teeth are sleeved on a rotating side shifting gear shaft, and two ends of the rotating side shifting gear shaft are respectively assembled with the rotating conveying frame and the rotating base in a circumferential rotating mode.

Preferably, the adhesive tape module comprises a box sealing mechanism, the packaging mechanism is used for bonding and packaging the carton box after box sealing through an adhesive tape, the adhesive tape is wound on an adhesive tape roll, the adhesive tape roll is sleeved on a unreeling shaft, and the unreeling shaft penetrates through the lifting frame and then is loaded into the unreeling motor;

the end part of the adhesive tape is tightly sucked or adhered with the adhesive wheel after respectively bypassing the first guide wheel and the second guide wheel, the first guide wheel and the second guide wheel are respectively sleeved on the first guide wheel shaft and the second guide wheel shaft in a circumferential rotating manner, and the first guide wheel shaft and the second guide wheel shaft are arranged on the lifting frame;

the adhesive wheel is arranged on an adhesive wheel shaft, two ends of the adhesive wheel shaft are respectively assembled with an adhesive wheel plate in a circumferential rotating mode, the adhesive wheel plate is arranged at one end of the adhesive wheel plate, the middle part of the adhesive wheel plate is hinged with the second hinge frame through a second adhesive pin, and one end, far away from the adhesive wheel, of the adhesive wheel plate is hinged with the first hinge frame through a first adhesive pin; first articulated frame is installed on articulated frame piece, the articulated frame piece is installed on the viscose mounting panel, the assembly of second articulated frame and viscose slide-bar one end, the viscose slide-bar other end passes and assembles with the viscose bolt after the groove of stepping down, the viscose slide-bar with step down groove block, slidable assembly, the groove of stepping down sets up on the viscose mounting panel, the viscose slide-bar is located the cover and is equipped with the viscose spring on the part between second articulated frame, the viscose installation, the viscose spring is used for applying the elasticity that hinders its removal to the viscose mounting panel to the second articulated frame.

Preferably, the adhesive wheel is provided with an adhesive sliding hole, an adhesive air guide groove and an adhesive communication hole, the adhesive air guide groove is arranged along the length direction of the adhesive sliding hole but does not completely penetrate through the adhesive sliding hole in the axial direction, one end of the adhesive sliding hole penetrates through the adhesive wheel, the other end of the adhesive sliding hole is communicated with one end of the adhesive communication hole, and the other end of the adhesive communication hole is communicated with the wheel shaft ring groove; the end, far away from the viscose intercommunicating pore, of the viscose sliding hole is provided with a viscose limiting ring, the viscose sliding ring is clamped, sealed and slidably arranged in the viscose sliding hole, the viscose sliding ring is sleeved outside the adsorption shaft, an air suction hole is arranged in the adsorption shaft along the axial direction of the adsorption shaft, one end, close to the viscose intercommunicating pore, of the air suction hole is a closed end, the end is communicated with one end of an air inlet hole, and the other end of the air inlet hole penetrates through the adsorption shaft; the air inlet hole is not communicated with the viscose slide hole in the initial state;

the viscose slip ring can not penetrate through the viscose limiting ring, the viscose slip hole is not provided with a viscose air guide groove at the position close to the viscose limiting ring, and the viscose slip ring and the viscose limiting ring are assembled in a sealing mode at the position not provided with the viscose air guide groove in the initial state; the viscose slide hole is directly or indirectly communicated with the negative pressure in the negative pressure pipe;

and a return spring is arranged between the adhesive slip ring and the end face of the adhesive slip hole close to the adhesive communication hole and used for applying elastic force for pushing the adhesive slip ring to the adhesive limiting ring.

Preferably, the wheel shaft annular groove is arranged on a viscose wheel shaft, the viscose wheel shaft is further provided with a viscose air passage and a viscose air passing hole respectively, the viscose air passing hole is used for communicating the viscose air passage with the wheel shaft annular groove, one end of the viscose air passage is sealed by a sealing plug, the other end of the viscose air passage is in sealed communication with the inner side of an air cover, the air cover is arranged on a viscose connecting plate corresponding to the air cover, the inner part of the air cover is communicated with one end of an air pipe, the other end of the air pipe is connected with an air valve in series and then is connected into a negative;

the outside cover of viscose wheel is equipped with the seal cover, but the seal cover is sealed with viscose slide opening open end and is adsorbed the sealed, the axial slip assembly of axle.

The invention has the beneficial effects that:

1. the automatic carton boxing and packaging machine is simple in structure, and can realize full automation of boxing and packaging of products and cartons by combining an automatic carton unpacking machine and an automatic carton packing machine, so that the efficiency is greatly improved.

2. The box sealing module can realize automatic bending and box sealing of the folded plate, thereby providing a foundation for subsequent adhesive tape packaging.

3. The adhesive tape module can realize that the adhesive tape is automatically adhered to the gap at the folded part of the folded plate of the carton, thereby realizing automatic packaging and greatly improving the efficiency and the standardization degree of products.

Drawings

Fig. 1-2 are schematic structural views of the present invention.

Fig. 3-13 are schematic structural views of the enclosure module. Wherein figure 10 is a cross-sectional view at a central plane of the rotational side shift tooth axis.

Fig. 14-20 are schematic views of the construction of the adhesive tape module. Wherein fig. 18 is a sectional view at a center plane of the axis of the adhesive spool, and fig. 19 is an enlarged view at F1 in fig. 18.

Fig. 21-22 are schematic views of the structure of the adhesive tape mechanism. Wherein fig. 22 is a cross-sectional view of the center plane of the adhesive wheel axis.

Fig. 23 to 24 are schematic views showing the structure of the cutting mechanism. Wherein figure 24 is a cross-sectional view at the center plane of the cut guide bar axis.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-24, the carton enclosing machine of the present embodiment comprises:

a frame for conveying the carton 900;

the carton sealing module A is used for bending and gathering folded plates opened on the carton so as to seal the carton;

and the adhesive tape module B is used for adhering an adhesive tape on the carton and moving the adhesive tape to complete the adhesion of the carton.

The machine frame comprises two mutually parallel second vertical plates 120 and a first vertical plate 110, wherein each pair of second vertical plates 120 comprises two mutually parallel second vertical plates 120, the two pairs of second vertical plates 120 are arranged at an angle of 90 degrees, a first conveying belt 210 and a second conveying belt 220 are respectively arranged between the two first vertical plates 110 and the two second vertical plates 120, the box sealing module A is arranged between the first conveying belt 210 and the second conveying belt 220 close to the first conveying belt 210, and the viscose glue belt module B is respectively arranged on each pair of second vertical plates 120;

the top of each pair of second vertical plates 120 is respectively provided with a transverse plate 130, the joint of the two pairs of second vertical plates 120 is provided with a corner plate 330, the top surface of the corner plate 330 is not higher than the top surface of the second conveyor belt 220, one of the second vertical plates 120 is provided with a push plate groove 121 at the corner plate 330, the outer side of the push plate groove 121 is provided with a push plate frame 320, the inner side of the push plate frame 320 is provided with a hollow push plate sliding groove 321, the push plate sliding groove 321 penetrates through the push plate frame 320 and is communicated with the push plate groove 121, a push plate 310 is clamped and slidably mounted in the push plate sliding groove 321, and the push plate 310 can pass through the push plate groove 121 and then enter the corner plate 330, so that the carton is pushed onto the second conveyor;

one end of the push plate sliding groove 321, which is far away from the push plate groove 121, is sealed by an end plate 322, the push plate 310 is respectively assembled with one end of a push plate telescopic shaft 511 and one end of a push plate guide shaft 410, the other end of the push plate telescopic shaft 511 penetrates out of the end plate 322 and then is loaded into the push plate electric cylinder 510, and the push plate electric cylinder 510 can drive the push plate telescopic shaft 511 to axially move after being started; the other end of the push plate guide shaft 410 extends through the end plate 322 and is axially slidably mounted thereto. When the carton sealing machine is used, the second conveyor belt close to the carton sealing module A conveys cartons to the corner plates, then the push plate electric cylinder 510 is started, the push plate 310 drives the packaged cartons 901 to enter another second conveyor belt 220, and finally the packaged cartons are output.

The box sealing module A comprises a box sealing bottom plate A110, a box sealing seat A150, a box sealing support plate A121 and a box sealing vertical plate A130 are mounted on the box sealing bottom plate A110, a box sealing top plate A120 and a box sealing horizontal plate A140 are mounted on the box sealing support plate A121 and the box sealing vertical plate A130 respectively, the box sealing horizontal plate A140 and the box sealing bottom plate A110 are assembled with two box sealing screw rods A212 in a circumferential rotation mode and cannot move axially, the two box sealing screw rods A212 penetrate through the box sealing bottom plate A110 and then are assembled with two different box sealing screw rod belt pulleys A341 respectively, and the two box sealing screw rod belt pulleys A341 are connected through a box sealing screw rod belt A340 to form a belt transmission mechanism. Two box sealing screws A212 respectively penetrate through the box sealing lifting plate A410 and are assembled with the box sealing lifting plate A through thread screwing. The two sealing lifting plates are respectively positioned on two sides of the sealing conveying belt A330, the sealing guide plates A420 are respectively installed on two sides of the two sealing lifting plates, and the two sealing guide plates A420 can respectively connect the top surfaces of the first conveying belt 210, the sealing conveying belt A330 and the second conveying belt 220 in a smooth mode, so that the carton 900 can be conveniently conveyed to the sealing conveying belt A330 from the first conveying belt 210 and then conveyed to the second conveying belt 220 from the sealing conveying belt A330. Preferably, the box sealing transverse plate a140 and the box sealing bottom plate a110 are further respectively assembled with two ends of two screw guide shafts a211, and the two screw guide shafts a211 penetrate through the box sealing lifting plate a410 and are axially slidably assembled with the box sealing lifting plate a410, and this design is mainly to provide guidance for the lifting of the box sealing lifting plate a 410. When the sealing screw rotates circumferentially, the sealing lifting plate A410 moves along with the sealing screw.

A first bevel gear A511 is mounted on one box sealing screw A212, the first bevel gear A511 is in meshing transmission with a first second bevel gear A512, the first second bevel gear A512 is sleeved on a lifting power shaft A230, two ends of the lifting power shaft A230 can rotate circumferentially with a first box sealing shaft plate A111 and a second box sealing shaft plate A112 respectively, and the first box sealing shaft plate A111 and the second box sealing shaft plate A112 are mounted on a box sealing bottom plate A110; still be equipped with second bevel gear A522 on the lift power shaft A230, second bevel gear A522 and the meshing transmission of second bevel gear A521, the suit of second bevel gear A521 is on lift output shaft A250, but lift output shaft A250 packs into in the joint sealing base A150 and with it circumferencial rotation, the assembly of axial displacement not, be provided with joint sealing base A151 on the joint sealing base A150, the part that lift output shaft A250 is located joint sealing base A151 is provided with worm part A540, worm part A540 meshes and constitutes worm gear drive mechanism with worm wheel A550. One end of the lifting output shaft A250 penetrates through the packaging base A150 and then is connected with an output shaft of the lifting motor A320 through a coupler, and the lifting motor A320 can drive the lifting output shaft A250 to rotate circumferentially after being started, so that the box sealing screw A212 and the worm wheel A550 are driven to rotate circumferentially respectively.

The worm wheel A550 is sleeved or arranged on the rotary main shaft A280, the top of the rotary main shaft A280 is fixedly assembled with the rotary seat A630, the bottom of the rotary main shaft A280 is circumferentially and rotatably assembled with the box sealing base A150, two main shaft locking grooves A281 which are 90 degrees apart are formed in the bottom of the rotary main shaft A280, the main shaft locking grooves A281 can be clamped and assembled with a main shaft locking block A810, so that the rotary main shaft A280 is locked in the circumferential direction, the main shaft locking block A810 is arranged on one end of a locking rod A820, the other end of the locking rod A820 is sleeved with a locking rod spring A830, penetrates through a spring partition plate A113 and is fixedly assembled with a locking rod nut A821, the locking rod nut A821 cannot penetrate through the spring partition plate A113, and the spring partition plate A113 is. The locking bar spring a830 is used to apply an elastic force pushing the main shaft locking block a810 to the main shaft locking groove, thereby maintaining the main shaft locking block and the main shaft locking groove in a snap-fit manner. The two sides of the main shaft locking block A810 are respectively provided with a locking block inclined plane A811, when the main shaft locking groove is clamped with the main shaft locking block, the main shaft locking block can be driven to exit the main shaft locking groove by overcoming the elasticity of the locking rod spring A830 only by applying enough torsion force to the rotating main shaft, and therefore automatic unlocking is achieved.

The rotary seat A630 is provided with two rotary seat plates A631 which are arranged in parallel, the two rotary seat plates A631 are assembled with a rotary guide rod A270 respectively, and the rotary guide rod A270 passes through the rotary side shifting plate A620 and the rotary conveying frame A610 respectively and is assembled with the rotary side shifting plate A270 in an axial sliding mode. A side shifting limiting plate A621 and a side shifting connecting plate A622 are respectively arranged at two ends of the rotating side shifting plate A620, and a side shifting push plate A623 is arranged on the side shifting connecting plate A622; the carton conveying device comprises a rotary conveying frame A610, wherein two parallel rotary conveying plates A611 are mounted on the rotary conveying frame A610, the two rotary conveying plates A611 are respectively assembled with two rotary pulley shafts A260 in a circumferential rotating mode, rotary pulleys A331 are sleeved on the rotary pulley shafts A260, the two rotary pulleys A331 are connected through a carton sealing conveying belt A330 to form a belt transmission mechanism, one of the rotary pulley shafts A260 is further assembled with a first rotary pulley A391, the first rotary pulley A391 is connected with a second rotary pulley A392 through a rotary belt A390 to form a belt transmission mechanism, the second rotary pulley A392 is sleeved on a rotary conveying motor shaft A371, the rotary conveying motor shaft A371 is installed in a rotary conveying motor A370, and the rotary conveying motor A370 can drive the rotary conveying motor shaft A371 to rotate circumferentially after being started, so that the carton sealing conveying belt A330 is driven to convey cartons.

The rotating seat plate A631 and the rotating conveying plate A611 are respectively assembled with a side-moving screw rod A381 in a circumferential rotating and axial-non-movable mode, one end of the side-moving screw rod A381 is installed in a side-moving motor A380, the side-moving motor A380 can drive the side-moving screw rod A381 to circumferentially rotate after being started, the side-moving screw rod A381 penetrates through one rotating side-moving plate A620 and is assembled with the rotating side-moving plate A620 in a threaded rotating and engaging mode, and the rotating side-moving plate A620 can be driven to axially move when the side-moving screw rod A381 circumferentially rotates; the box sealing conveying belt A330 is characterized in that two rotating side moving plates A620 are arranged on two sides of the box sealing conveying belt A330 respectively, the bottoms of the two rotating side moving plates A620 are respectively provided with a different rotating side moving rack A640, the two rotating side moving racks A640 are respectively meshed with two sides of a rotating side moving rack A560 to form a gear-rack transmission mechanism, the rotating side moving rack A560 is sleeved on a rotating side moving rack A561, two ends of the rotating side moving rack A561 are respectively assembled with a rotating conveying frame A610 and a rotating base A630 in a circumferential rotating mode, a rotating base sliding groove A632 is arranged on the rotating base A630, the rotating base sliding groove A632 is clamped with a rotating side moving slide block A641 in a sliding mode and assembled in a sliding mode, and the rotating side moving slide block A641 is installed on the rotating side moving rack A640. In use, the side-shifting screw a381 rotates to drive the rotating side-shifting plate a620 assembled therewith to move along the axial direction thereof, and to drive the other rotating side-shifting plate a620 to move closer to or away from each other to adjust the spacing between the two side-shifting push plates a623, thereby adapting to cartons 900 of different widths, so that the two side-shifting push plates a623 are respectively clamped on two sides of the carton 900.

A sealing sliding seat A720 is mounted on the sealing top plate A120, a sealing sliding groove A721 is arranged on the sealing sliding seat A720, the sealing sliding groove A721 is clamped with a sealing sliding block A741 and can be assembled in a sliding mode, the sealing sliding block A741 is arranged on a sealing rack A740, two sealing racks A740 are respectively meshed with two sides of a sealing gear A530 to form a gear-rack transmission mechanism, the sealing gear A530 can be sleeved on a sealing gear shaft A531 in a circumferential rotating mode, and the sealing gear shaft A531 is mounted on the sealing sliding seat A720;

one end of each of two box sealing racks A740 is respectively assembled and fixed with two different box sealing side plates A710, each box sealing side plate A710 is fixedly connected with a box sealing installation plate A712 through a box sealing lower pressing plate A711, the box sealing stroke switch A350 is installed on the box sealing installation plate A712, the triggering end of the box sealing stroke switch A350 is placed into the box sealing stroke switch A760 to be opposite to the box sealing induction plate A760, the box sealing induction plate A760 is assembled with one end of a box sealing guide shaft A750, the other end of the box sealing guide shaft A750 penetrates through the box sealing installation plate A712 to be assembled with a box sealing nut A751, the box sealing nut A751 cannot penetrate through the box sealing installation plate A712, a box sealing spring A730 is sleeved on a part, located between the box sealing installation plate A712 and the box sealing induction plate A760, the box sealing spring A730 is used for applying elastic force for preventing the box sealing induction plate A760 from moving towards the box sealing installation plate A712, so that the box sealing stroke switch A350 is in an unfired state in an initial state, when the box-sealing travel switch a350 is triggered, it is determined that the two box-sealing induction plates a760 are pressed against each other, that is, the two parallel folding plates 910 are pressed and bent in place.

The joint of the sealing box lower pressing plate A711 and the sealing box mounting plate A712 is provided with a lower pressing inclined surface A7111, and one end of the sealing box lower pressing plate A711 connected with the sealing box mounting plate A712 is gradually inclined downwards towards the other end of the sealing box lower pressing plate A. When the two box sealing induction plates A760 approach each other, the two pressing slopes A7111 guide the corresponding folded plate 910 to bend downwards, and then the bottom surface of the box sealing pressing plate A711 is flattened. The box sealing side plate A710 can be axially slidably sleeved on the box sealing side plate shaft A220, two ends of the box sealing side plate shaft A220 are respectively assembled with the box sealing support plate A121, one end of the box sealing side plate A710 is assembled with one end of a box sealing telescopic shaft A311 of the box sealing electric cylinder A310, and the box sealing electric cylinder A310 can drive the box sealing telescopic shaft A311 to axially move after being started, so that the box sealing side plate A710 is driven to axially move along the box sealing side plate shaft A220, and two box sealing side plates A710 are driven to be away from or approach to each other to move, and therefore the distance between the two box sealing induction plates A760 can be quickly adjusted.

When the carton sealing device is used, the carton sealing guide plate A420 moves downwards to a position which is not higher than the top surfaces of the first conveyor belt 210, the second conveyor belt 220 and the carton sealing conveyor belt A330, then the carton 900 is conveyed onto the carton sealing conveyor belt A330 from the first conveyor belt 210, then the side-shifting motor A380 is started, so that the rotating side-shifting plates A620 are driven to move close to each other, and the two side-shifting push plates A623 move close to the carton 900 to clamp the two sides of the carton 900. The electric cylinder a310 is actuated to move the two sealing induction plates a760 toward each other, so that the corresponding flap 910 is bent toward the carton to close the carton. After two blocks of folded plates that are parallel to each other are closed, two block sealing induction plate A760 of block sealing electric cylinder A310 drive are kept away from each other and are removed until reseing, then start elevator motor A320, elevator motor drive roating seat A630 rotates, joint sealing screw A212 rotates, thereby at first drive joint sealing guide plate A420 is located rotatory bedplate A631 top, roating seat A630 slowly rotates 90 simultaneously, make two folded plates that do not buckle correspond with two block sealing induction plate A760 respectively, then two block sealing induction plate A760 are close to each other so that these two folded plates buckle to the carton, accomplish the joint sealing of carton. After the carton sealing is completed, the lifting motor A320 rotates reversely to reset, so that the carton sealing guide plate A420 resets, then the rotary conveying motor A370 is started, and the carton sealing box 900 is output to the second conveying belt 220 close to the carton sealing box through the carton sealing conveying belt A330.

The adhesive tape module B comprises a lifting electric cylinder B310 and a box sealing mechanism, wherein the lifting electric cylinder B310 is installed on a transverse plate 130, a lifting telescopic shaft 311 of the lifting electric cylinder B310 penetrates through the transverse plate 130 and then is assembled with a lifting mounting plate B111, the lifting mounting plate B111 is installed on a lifting frame B110, the lifting mounting plate B111 is also assembled with one end of a lifting frame guide rod B210, the other end of the lifting frame guide rod B210 penetrates through the transverse plate 130 and then is assembled with a guide rod bolt B211, and the lifting electric cylinder B310 can drive the lifting telescopic shaft 311 to axially move after being started, so that the lifting frame B110 is driven to synchronously move;

the lifting frame B110 is provided with a packaging mechanism B500 and a cutting mechanism B400, the packaging mechanism B500 is used for bonding and packaging the carton after box sealing through an adhesive tape 800, the adhesive tape 800 is wound on an adhesive tape roll 801, the adhesive tape roll 801 is sleeved on an unwinding shaft B321, the unwinding shaft B321 penetrates through the lifting frame B110 and then is loaded into an unwinding motor B320, and the unwinding motor B320 can drive the adhesive tape roll 801 to rotate forward and backward in the circumferential direction after being started;

the end of the adhesive tape 800 respectively winds around the first guide wheel B611 and the second guide wheel B612 and then is tightly sucked or adhered (relatively fixed) with the adhesive wheel B540, the first guide wheel B611 and the second guide wheel B612 are respectively sleeved on the first guide wheel shaft B221 and the second guide wheel shaft B222 in a circumferentially rotatable manner, and the first guide wheel shaft B221 and the second guide wheel shaft B222 are installed on the lifting frame B110;

the adhesive wheel B540 is arranged on an adhesive wheel shaft B560, two ends of the adhesive wheel shaft B560 are respectively assembled with an adhesive wheel plate B531 in a circumferential rotating manner, the adhesive wheel plate B531 is arranged on one end of an adhesive wheel plate B530, the middle part of the adhesive wheel plate B531 is hinged with a second hinge frame B522 through a second adhesive pin B262, and one end, far away from the adhesive wheel B540, of the adhesive wheel plate B530 is hinged with a first hinge frame B521 through a first adhesive pin B261; first articulated frame B521 is installed on articulated frame block B511, articulated frame block B511 is installed on viscose mounting panel B510, the assembly of second articulated frame B522 and viscose slide-axis B290 one end, the assembly with viscose bolt B291 after the viscose slide-axis B290 other end passes groove B512 of stepping down, viscose slide-axis B290 with step down groove B512 block, slidable assembly, step down groove B512 sets up on viscose mounting panel B510, the cover is equipped with viscose spring B710 on the part that viscose slide-axis B290 is located between second articulated frame B522, the viscose mounting panel B510, viscose spring B710 is used for applying the elasticity that hinders its removal to viscose mounting panel B510 to second articulated frame B522.

In the initial state, the end of the adhesive tape 800 connected to the adhesive wheel B540 is located at the position where the carton needs to be adhered (in the carton running direction) after the carton is sealed and below the position where the carton needs to be adhered. When the carton passes through adhesive wheel B540, sticky tape 800 has scribbled sticky glue one side and bonds with the carton, along with the removal of carton, unreels the motor and slowly rotates to release sticky tape 800 on the sticky tape roll 801 gradually so that sticky tape 800 encapsulates the carton, cut off sticky tape 800 after the carton passes adhesive wheel B540, accomplish sticky. In the gluing process, the adhesive tape 800 is pressed on the carton by the adhesive wheel B540 all the time, so that the adhesive tape is ensured to be tightly adhered to the carton.

Preferably, the adhesive wheel B540 is provided with an adhesive sliding hole B541, an adhesive air guide groove B542 and an adhesive communication hole B544, the adhesive air guide groove B542 is arranged along the length direction of the adhesive sliding hole B541, but does not completely penetrate through the adhesive sliding hole B541 in the axial direction, one end of the adhesive sliding hole B541 penetrates through the adhesive wheel B540, the other end of the adhesive sliding hole B541 is communicated with one end of the adhesive communication hole B544, and the other end of the adhesive communication hole B544 is communicated with the wheel axle ring groove B561; an adhesive limiting ring B543 is mounted at one end, far away from the adhesive communication hole B544, of the adhesive sliding hole B541, an adhesive sliding ring B820 is mounted in the adhesive sliding hole B541 in a clamping, sealing and slidable mode, the adhesive sliding ring B820 is sleeved outside the adsorption shaft B810, a suction hole B811 is axially arranged inside the adsorption shaft B810, one end, close to the adhesive communication hole B544, of the suction hole B811 is a closed end and is communicated with one end of the air inlet hole B812, and the other end of the air inlet hole B812 penetrates through the adsorption shaft B810. In the initial state, the air inlet hole B812 is not communicated with the adhesive slide hole B541.

The viscose sliding ring B820 cannot penetrate through the viscose limiting ring B543, the position, close to the viscose limiting ring B543, of the viscose sliding hole B541 is not provided with a viscose air guide groove B542, and in an initial state, the viscose sliding ring B820 and the viscose limiting ring B543 are not provided with the viscose air guide groove B542 in a sealing assembly mode. And a return spring B730 is arranged between the end faces of the adhesive slip ring B820 and the adhesive slip hole B541 close to the adhesive communication hole B544, and the return spring B730 is used for applying elastic force to the adhesive slip ring B820 to push the adhesive limiting ring B543.

Wheel shaft annular B561 sets up on viscose wheel shaft B560, still be provided with viscose air flue B562, viscose air passing hole B563 on the viscose wheel shaft B560 respectively, viscose air passing hole B563 is with viscose air flue B562, wheel shaft annular B561 intercommunication, viscose air flue B562 one end is sealed through sealing plug B620, the other end and the inboard sealed intercommunication of air cap B630, air cap B630 is installed on the viscose even board B531 that corresponds with it and its inside and trachea B631 one end intercommunication, the trachea B631 other end is inserted in the negative pressure jar behind the series connection pneumatic valve, and the inside negative pressure or the vacuum state of negative pressure jar. When in use, the inside of the negative pressure tank is communicated with the adhesive sliding hole B541. When the adhesive tape 800 is required to be tightly sucked on the air suction hole B811, the adhesive tape is only required to be pressed towards the adsorption shaft B810, so that the adsorption shaft B810 drives the adhesive slip ring B820 to move towards the adhesive slip hole B541 until the adhesive slip ring B820 and the adhesive air guide groove B542 are assembled, at this time, the air inlet hole B812 is communicated with the inside of the negative pressure tank through the adhesive air guide groove B542, and negative pressure is generated at the air suction hole B811 to tightly suck the adhesive tape. When the carton passes through the adhesive wheel B540, the carton draws the adhesive tape, so that the adhesive tape is separated from the air suction hole B811, the adhesive tape is continuously adhered to the carton along with the traction of the carton, and when the adhesive wheel is pressed on the carton, the air suction hole B811 is restored to be tightly sucked with the adhesive tape, but because the suction force is not enough to resist the traction force of the carton on the adhesive tape, the adhesive wheel only compresses the adhesive tape on the carton, after the carton passes through the adhesive wheel, the adhesive tape is restored to be tightly sucked with the air suction hole B811, the adhesive tape is cut off at the moment, and then the next adhesive packaging is waited.

The outside of the adhesive wheel B540 is sleeved with a sealing sleeve B550, and the sealing sleeve B550 seals the opening end of the adhesive sliding hole B541, seals the adsorption shaft B810 and can be assembled in an axial sliding mode.

The cutting mechanism B400 comprises a cutting support B410, the cutting support B410 is installed on the lifting frame B110, a cutting support plate B411 is installed on the cutting support B410, a cutting bolt B230 penetrates through the cutting support plate B411 and a cutting adjusting frame B420 and then is assembled with a cutting nut B231, therefore, the cutting support B410 and the cutting adjusting frame B420 are assembled and fixed, the included angle between the cutting support B410 and the cutting adjusting frame B420 can be adjusted after the cutting nut B231 is loosened, and later debugging is facilitated.

The cutting adjusting frame B420 is provided with a debugging support plate B421, the debugging support plate B421 is provided with a cutting installation seat B422, the cutting installation seat B422 is provided with a cutting electric cylinder B330, a cutting telescopic shaft B331 of the cutting electric cylinder B330 penetrates through the cutting installation seat B422 and then is assembled and fixed with a cutting sliding end B332, the cutting sliding end B332 is clamped and slidably installed in a cutting side moving groove B452, the cutting side moving groove B452 is also clamped and slidably assembled with a cutting guide sliding end B242, the cutting guide sliding end B242 is installed at one end of a cutting guide rod B240, the other end of the cutting guide rod B240 penetrates through the cutting installation seat B422 and then is assembled with a cutting limit nut B241, and the cutting guide rod B240 and the cutting installation seat B422 are axially slidably assembled.

The cutting-off side moving groove B452 is arranged on a cutting-off seat B450, a cutting-off knife board B460 is arranged on the cutting-off seat B450, a plurality of cutting-off sharp teeth B461 are arranged on the cutting-off knife board B460, two ends of the cutting-off seat B450 are respectively assembled with a cutting-off wheel board B451 and one end of a cutting-off side moving shaft B250, the other end of the cutting-off side moving shaft B250 is sleeved with a cutting-off spring B720 and penetrates out of a cutting-off slide block B470, the cutting-off slide block B470 is assembled with a cutting-off slide groove B441 in a clamping and sliding manner, the cutting-off slide groove B441 is arranged on a cutting-off guide block B440, the cutting-off guide block B440 is arranged on one end of a cutting-mounting seat B422, the cutting-off spring B720 is used for applying elastic force for preventing the cutting-off seat B450 from moving to the cutting-off guide block B440, a cutting-off travel switch B340 is arranged at the bottom of the cutting-off slide groove B441, a triggering end, the industrial personal computer judges that the cutting is in place, so that the cutting telescopic shaft stops to continue to extend.

The cutting wheel plate B451 is assembled with a cutting wheel shaft B830, a cutting wheel B831 is sleeved on the cutting wheel shaft B830 in a circumferential rotating mode, the cutting wheel B831 is tightly pressed with a cutting chute B431, the cutting chute B431 is arranged on a cutting side moving block B430, the cutting side moving block B430 is installed on a cutting installation seat B422, and the cutting chute B431 is gradually inclined towards the cutting side moving block B430 from one end assembled with the cutting installation seat B422 to the other end. When the cutting seat B450 moves to the cutting travel switch, the cutting chute B431 drives the cutting seat B450 to move to the cutting side moving block B430, so that the cutting knife plate B460 moves in the axial direction of the cutting guide rod and the cutting side moving shaft, and the cutting sharp teeth B461 pierce the adhesive tape 800 and then move axially along with the cutting side moving shaft to completely cut the adhesive tape 800. The design enables the adhesive tape not to have the problem of continuous cutting, simultaneously enables the adhesive tape to be cut more easily, and enables the pulling force generated at the position of the air suction hole for sucking the adhesive tape to be smaller, thereby preventing the adhesive tape from falling off from the air suction hole to cause faults.

The invention is not described in detail, but is well known to those skilled in the art.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. A carton enclosing machine, comprising:

the machine frame is used for conveying the paper boxes;

2. A carton packaging machine as claimed in claim 1, characterized in that the end of the push plate chute far from the push plate chute is closed by an end plate, the push plate is respectively assembled with one end of a push plate telescopic shaft and one end of a push plate guide shaft, and the other end of the push plate telescopic shaft penetrates through the end plate and then is loaded into a push plate electric cylinder; the other end of the push plate guide shaft penetrates through the end plate and can be axially assembled with the end plate in a sliding mode.

3. A carton enclosing machine according to claim 1, wherein the carton enclosing module comprises a top box enclosing plate, a box enclosing slide, the top box enclosing plate being mounted on side box enclosing plates; the box sealing device is characterized in that a box sealing sliding seat is mounted on the box sealing top plate, a box sealing sliding groove is formed in the box sealing sliding seat, the box sealing sliding groove is clamped with a box sealing sliding block and can be assembled in a sliding mode, the box sealing sliding block is arranged on a box sealing rack, two box sealing racks are arranged and are respectively meshed with two sides of a box sealing gear to form a gear rack transmission mechanism, the box sealing gear can be sleeved on a box sealing gear shaft in a circumferential rotating mode, and the box sealing gear shaft is mounted on the box sealing sliding seat;

4. The carton packaging machine according to claim 3, further comprising a rotating mechanism, wherein the rotating mechanism comprises a box sealing bottom plate, a box sealing seat, a box sealing support plate and a box sealing vertical plate are mounted on the box sealing bottom plate, a box sealing top plate and a box sealing transverse plate are respectively mounted on the box sealing support plate and the box sealing vertical plate, the box sealing transverse plate and the box sealing bottom plate are respectively assembled with two box sealing screws in a circumferential rotation mode and in an axial movement mode, the two box sealing screws penetrate through the box sealing bottom plate and are respectively assembled with two different box sealing screw belt wheels, and the two box sealing screw belt wheels are connected through a box sealing screw belt to form a belt transmission mechanism; two sealing box screws respectively penetrate through the sealing box lifting plate and are assembled with the sealing box lifting plate in a screwing mode through threads; the sealing lifting plates are arranged on two sides of the sealing conveying belt respectively, sealing guide plates are arranged on two sides of the two sealing lifting plates respectively, and the two sealing guide plates can be used for smoothly connecting the top surfaces of the first conveying belt and the sealing conveying belt, and the top surfaces of the sealing conveying belt and the second conveying belt respectively.

5. The carton sealing machine of claim 4, wherein the transverse sealing plate and the bottom sealing plate are respectively assembled with two ends of two screw guide shafts, and the two screw guide shafts penetrate through the lifting sealing plate and are assembled with the lifting sealing plate in an axially sliding manner;

6. The carton packaging machine according to claim 5, characterized in that the bottom of the rotating spindle is provided with two spindle locking grooves distributed at an included angle, and the spindle locking grooves can be assembled with the spindle locking block in a clamping manner, so as to lock the rotating spindle in the circumferential direction; the spindle locking block is arranged at one end of the locking rod, the other end of the locking rod is sleeved with a locking rod spring and fixedly assembled with a locking rod nut after penetrating through the spring partition plate, the locking rod nut cannot penetrate through the spring partition plate, and the spring partition plate is arranged on the box sealing bottom plate; the lock rod spring is used for applying elastic force for pushing the main shaft lock block to the main shaft lock groove; and two sides of the main shaft locking block are respectively provided with a locking block inclined plane.

7. A carton enclosing machine according to claim 5, characterized in that two swivel base plates are mounted on said swivel base in parallel with each other, the two swivel base plates being respectively fitted with swivel guide rods which respectively pass through the swivel side shift plate, the swivel carriage and are axially slidably fitted therewith;

8. The carton packaging machine according to claim 1, wherein the adhesive tape module comprises a box sealing mechanism, the packaging mechanism is used for bonding and packaging the carton after box sealing through an adhesive tape, the adhesive tape is wound on an adhesive tape roll, the adhesive tape roll is sleeved on a unreeling shaft, and the unreeling shaft passes through the lifting frame and then is loaded into the unreeling motor;

9. A carton packaging machine according to claim 8, characterized in that the adhesive wheel is provided with an adhesive sliding hole, an adhesive air guide groove and an adhesive communication hole, the adhesive air guide groove is arranged along the length direction of the adhesive sliding hole but does not penetrate through the adhesive sliding hole in the axial direction, one end of the adhesive sliding hole penetrates through the adhesive wheel, the other end of the adhesive sliding hole is communicated with one end of the adhesive communication hole, and the other end of the adhesive communication hole is communicated with the wheel shaft ring groove; the end, far away from the viscose intercommunicating pore, of the viscose sliding hole is provided with a viscose limiting ring, the viscose sliding ring is clamped, sealed and slidably arranged in the viscose sliding hole, the viscose sliding ring is sleeved outside the adsorption shaft, an air suction hole is arranged in the adsorption shaft along the axial direction of the adsorption shaft, one end, close to the viscose intercommunicating pore, of the air suction hole is a closed end, the end is communicated with one end of an air inlet hole, and the other end of the air inlet hole penetrates through the adsorption shaft; the air inlet hole is not communicated with the viscose slide hole in the initial state;

10. A carton packaging machine according to claim 9, characterized in that the wheel axle ring groove is arranged on a viscose wheel axle, the viscose wheel axle is further provided with a viscose air passage and a viscose air passing hole respectively, the viscose air passing hole communicates the viscose air passage and the wheel axle ring groove, one end of the viscose air passage is sealed by a sealing plug, the other end of the viscose air passage is sealed and communicated with the inner side of an air cover, the air cover is arranged on a viscose connecting plate corresponding to the air cover, the inner part of the air cover is communicated with one end of an air pipe, the other end of the air pipe is connected with an air valve in series and then is connected into a negative pressure tank, and;