CN111251656A

CN111251656A - Carton folding equipment

Info

Publication number: CN111251656A
Application number: CN201910980329.1A
Authority: CN
Inventors: 周欢生
Original assignee: Suzhou Weichuangdu Information Technology Co ltd
Current assignee: Suzhou Weichuangdu Information Technology Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-09

Abstract

The invention relates to a paper box folding device, which mainly solves the problems that the action linking beat of different stations of the existing paper box folding device is slow and the like. The invention is different from the existing equipment adopting a linear conveying mode, the paperboard is conveyed to a certain position by adopting a vertical conveying mode and a horizontal conveying mode, the paperboard is output to a position with a specified distance between two rollers, the paperboard is lowered to the paperboard folding station through a lifting plate, each step of action is carried out to complete folding, and finally, the paperboard is sucked and output through a sucking disc, so that the problem of slow station connection rhythm caused by linear conveying is better solved. The device mainly comprises a rack, a characteristic mechanism and a pneumatic control operation box, wherein the rack is used for supporting the characteristic mechanism, and the pneumatic control operation box is arranged above the characteristic mechanism and is used for setting the starting and the emergency stopping of the action of the device and displaying state information. The device is simple to operate, each station acts compactly, and the applicability is strong in the aspect of folding the paper box.

Description

Carton folding equipment

Technical Field

The present invention relates to a carton folding apparatus.

Background

In general carton folding equipment, a linear conveying line mode is mostly adopted for carrying out a carton folding process, and in the carton folding process, processes among all parts are separated, so that the time efficiency of the whole carton folding process is low, even the beat of the connection of partial carton folding actions is slow, and the time for folding the whole carton is further prolonged. In the existing carton folding technologies, a part of devices adopt an air blowing mode to fold the carton, so that the probability of wiping the carton is reduced, but the edges and corners of the carton are not easy to deal with relative to the complicated carton, and the folding is finished by means of the layout of a mechanical structure; there are also partial folding devices in the industry that integrate carton folding, but those devices are relatively simple and also shift in position during carton transfer, resulting in damaged folding of the entire carton. Therefore, it is necessary to provide a carton folding apparatus to solve the transportation problem during the carton folding process, so as to reduce the carton folding process steps, and at the same time, to complete the complicated carton folding, to ensure the accuracy of the carton at each station, and to finally solve the problem during the actual production process and to satisfy the demand for the variety of the carton in real life.

Disclosure of Invention

The invention provides a novel paper box folding device which overcomes the technical problems to be solved by the prior art, is different from the prior art in that a linear conveying mode is adopted, a paperboard is conveyed to a certain position by adopting a vertical conveying mode and a horizontal conveying mode, the paperboard is conveyed to a position with a specified distance through two rollers, the paperboard is lowered to a folding station through a lifting plate, each step of action is carried out to complete folding, and finally the paperboard is sucked and output through a sucking disc, so that the problem that the station connection rhythm is slow due to linear conveying is solved well, and the product production efficiency is improved more effectively.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the invention adopts a paper box folding device, which comprises a frame, a characteristic mechanism and a pneumatic control operation box, and is characterized in that: the characteristic mechanism is fixed above the rack; the pneumatic control operation box is fixed on a bracket in the middle of the rack and is positioned right above the characteristic mechanism; the characteristic mechanism comprises a feeding mechanism, a main body folding mechanism and a folding mechanism; the feeding mechanism is positioned on the left side of the characteristic mechanism; the edge folding mechanism is positioned at the middle lower part of the characteristic mechanism; the main body folding mechanism is positioned at the middle upper part of the characteristic mechanism.

Preferably, the feeding mechanism consists of an upper guide plate, a paper plate, a lower guide plate, a first cylinder, a first connecting rod head, a linear slide rail slider, a second connecting rod head, a second cylinder, a first lifting plate, a first bottom plate, a connecting plate, a slider, a suction nozzle, a synchronous motor, a synchronous belt, a first bearing seat, a synchronous belt wheel, a shaft sleeve, a driving shaft, a first roller, a driving gear, a second bearing seat, a driven shaft, a second roller, a driven gear and a thirteen cylinder; the upper guide plate is fixed on a bracket in the middle of the rack through a threaded nut and forms an included angle of 135 degrees with the horizontal plane; the lower guide plate is fixed on the first bottom plate through a threaded nut and forms an angle of 135 degrees with the horizontal plane; in a space formed by the upper guide plate and the lower guide plate, an inclined plane is formed at an angle of 45 degrees with a horizontal plane; the two cylinder thirteen are symmetrically arranged on a bracket of an inclined plane middle rack formed by the upper guide plate and the lower guide plate through threaded nuts, the shaft ends of the two cylinder thirteen are both connected with a stop block, and the two cylinder thirteen are in an output state in an initial state; the paper board is placed in a space formed by the upper guide plate and the lower guide plate under the action of the front end manipulator equipment, and two blocking blocks are arranged on two sides of the middle part of the paper board to prevent the paper board from falling; the first base plate is fixed on a vertical support on the rack through a threaded nut, and a rectangular groove is machined in the middle of the first base plate; the first air cylinder is fixed below the first bottom plate through a threaded nut, the shaft end of the first air cylinder is locked at one end of the first connecting rod through threads, the other end of the first connecting rod is connected with a connecting plate through a pin and fastened together, and the connecting plate can rotate around the central shaft of the pin; the connecting plate is fixed on the sliding block through a threaded nut; the slide block is fastened on the linear slide rail slide block and can slide back and forth along the linear slide rail slide block; the two suction nozzles are fastened on the connecting plate through threaded nuts; the first lifting plate is fixed below the first base plate through a pin, is parallel to the cylinder and is fixed on the first base plate, and can rotate around a central shaft of the pin; the linear slide rail sliding block is fixedly arranged on the first lifting plate through a screw; the second connecting rod head is fixed below the first lifting plate through a threaded nut; one end of the second air cylinder is fixed on a support on the rack through a threaded nut, the other end of the second air cylinder is fixed on a second connecting rod head through a pin, and the second air cylinder can rotate around the axis of the pin; the synchronous motor is fixed at the other end of the first bottom plate through a threaded nut, and synchronous belt wheels of the same type are arranged at the shaft end of the synchronous motor; the synchronous belt is connected with two synchronous belt wheels; the two first bearing blocks are fixed on a bracket of the rack through threaded nuts; the driving shaft is fixed on the first bearing seat and can rotate around a central shaft of the first bearing seat; the first roller is fastened in the middle of the driving shaft and can rotate along with the driving shaft; the shaft sleeve is fixed on the left side of the driving shaft; the synchronous belt pulley is fastened on the driving shaft under the action of the shaft sleeve and can rotate along with the driving shaft; the driving gear is fastened on the driving shaft and can rotate along with the driving shaft; the two bearing block II is fixed on a bracket of the rack through a threaded nut and is positioned below the bearing block I; the driven shaft is fixed on the second bearing seat and can rotate around the central shaft of the second bearing seat; the second roller is fastened in the middle of the driven shaft and can rotate along with the driven shaft; the driven gear is fastened on the driven shaft and can rotate along with the driven shaft; the driving gear is meshed with the driven gear.

Preferably, the main body folding mechanism consists of a sucker hanging block, a sucker, a discharging inclined plate, an aluminum profile, a guide shaft II, a moving block, a floating joint I, a cylinder ten, a guide shaft III, a linear bearing, a cylinder eleven, a cylinder twelve, an upper plate, an upright post, a floating joint II, a die, a floating joint III and a pressing die; the four upright posts are fixed on a bracket of the characteristic mechanism through threaded nuts; the upper plate is fixed on the upper surfaces of the four stand columns through threaded nuts; the cylinder twelve is fixed on the upper surface of the upper plate through a threaded nut; the two cylinders eleven are fixed on the upper surface of the upper plate through threaded nuts; the cylinder twelve and the two cylinders eleven are arranged in three rows, and the cylinder twelve is positioned between the two cylinders eleven; the shaft end of the cylinder twelve is fastened at one end of the floating joint three; the other end of the floating joint III is fastened above the pressing die through internal thread matching; the shaft ends of the first two cylinders are respectively fastened at one end of the second floating joint; the other end of the floating joint II is fastened above the die in a matched manner through internal threads; two sides of the first cylinder and the second cylinder are respectively provided with a third guide shaft and a linear bearing; the linear bearing is fastened on the upper plate through a threaded nut; the third guide shaft penetrates through the linear bearing, and the lower end of the third guide shaft is fastened with the die through threaded connection; the third guide shaft can move back and forth along the central axis of the linear bearing; the cylinder ten is fixed on a support on the upper plate through a threaded nut and is positioned at the left side of the upper surface of the upper plate; one end of the floating joint I is fastened with the shaft end of the cylinder ten through threads; the other end of the first floating joint is fastened with a moving block through threads; the aluminum profile is fastened on the bracket on the upper plate through a threaded nut and is positioned below the cylinder ten; the second guide shaft is fixed on the aluminum profile through a threaded nut; a cylindrical hole is formed in the middle of the moving block and penetrates through the second guide shaft, and the moving block can move back and forth along the central axis of the second guide shaft; the sucker hanging block is fastened on the moving block through a threaded nut and can move back and forth along with the moving block; the sucker is fastened on the sucker hanging block through a threaded nut, and the sucker hanging block can move back and forth together; the discharging inclined plate is fastened at the left edge of the die through a threaded nut.

Preferably, the edge folding mechanism consists of a second bottom plate, a third air cylinder, a first push plate, a fourth air cylinder, a second push plate, a third bottom plate, a first end plate, a fifth air cylinder, a second end plate, a guide rod, a spring, an edge folding plate, a sixth air cylinder, a rack, a gear, a rolling shaft, a third bearing seat, an outlet clamping plate, a seventh air cylinder, a fourth bottom plate, a third push plate, a thin air cylinder, a side folding block, an eighth air cylinder, a third end plate, a first guide shaft, a fourteen air cylinder, a cylindrical support, a second lifting plate, a ninth air cylinder, an inclined block and; the cylindrical support is fixed on the middle support of the rack through a threaded nut; the air cylinder fourteen is fixed on the cylindrical support through a threaded nut; the two lifting plates are symmetrically fastened on a piston rod of the air cylinder fourteen through threaded nuts; the bottom plate II is fixed on a middle support of the rack through a threaded nut and is positioned above the cylindrical support; the cylinder nine is fixed on the left side of the middle part of the bottom plate II through a threaded nut; one end of the inclined block is fastened at the shaft end of the cylinder nine through threaded connection, can move back and forth along with the stretching of the cylinder nine and is positioned on the upper surface of the bottom plate II; the cylinder six is fixed at the lower left corner of the bottom plate II through a threaded nut, and the shaft end of the cylinder six is matched and fixed with the internal thread of the rack through an external thread; the bearing seat tee joint is fastened below the base plate II through a threaded nut; the rolling shaft is fixed in a shaft hole of the bearing seat III and can rotate along with the axis of the bearing seat III; the gear is fastened at the lower end of the rolling shaft and can rotate along with the rolling shaft, and the gear is matched with the rack and can carry out meshing transmission; the folding plate is welded in the middle of the rolling shaft and folds the folded left side plate of the paperboard; the end plate tee joint is fastened at the right lower part of the second bottom plate through a threaded nut; the two cylinders eight are fixed on the end plate three in parallel through threaded nuts; eight shaft ends of the two cylinders are connected with a third push plate through threads; one ends of the first guide shafts are fastened on the third end plate through threaded nuts, and the other ends of the first guide shafts penetrate through two round holes of the third push plate; the third push plate can move back and forth along the central shafts of the two cylindrical holes of the third push plate under the action of the eighth cylinder; the left side and the right side of the third push plate are fixed with the thin cylinder through bolts; the morning shaft end of the thin cylinder is connected with the side folding block through threads; the push plate III, the thin cylinder, the side folding block, the cylinder IV, the end plate III and the guide shaft I are integrally and bilaterally symmetrically arranged on the left side of the bottom plate II; the two cylinders five are respectively fastened on the two end plates I through threaded nuts; the two first end plates are fastened at the front end and the rear end of the second bottom plate through threaded nuts, and two cylindrical holes are formed in the first end plates; the shaft end of the cylinder V is connected with the end plate II through threads; one ends of the two guide rods are fastened on the second end plate through threaded nuts and are positioned on two sides of the fifth cylinder; the other ends of the two guide rods respectively penetrate through two cylindrical holes in the first end plate and are connected with the flanging plate through threads, and the central axis of each guide rod is parallel to the central axis of the fifth cylinder; the guide rod can move back and forth along the central axis of the cylindrical hole on the first end plate; a spring is arranged between the folded edge plate and the first end plate; the cylinder tee joint is fixed on the left side of the bottom plate II through a threaded nut and is symmetrically arranged at an included angle of 45 degrees from top to bottom; the first push plate is fixed with the shaft end of the third air cylinder through threads; the cylinder cross is fixed on the right side of the bottom plate II through a threaded nut and symmetrically arranged at an included angle of 45 degrees from top to bottom; the second push plate is fixed with the shaft end of the fourth cylinder through threads; the bottom plate tee joint is fastened above the right side of the bottom plate II through a threaded nut and forms an included angle of 30 degrees with the bottom plate II; the bottom plate four-way joint is fastened on the upper side and the lower side of the right side of the bottom plate II through threaded nuts, and has an included angle of 30 degrees with the bottom plate II as with the bottom plate III; the cylinder seventh is fixed on the bottom plate IV through a threaded nut; and the outlet clamping plate is connected with the shaft end of the cylinder seven through threaded connection.

Preferably, the rack is built by aluminum alloy sectional materials, and the periphery of the underframe is sealed by stainless steel so as to ensure safety; explosion-proof glass is arranged in a frame built by aluminum profiles on the working table; the table top plate is blackened by a carbon steel plate. The panel of the pneumatic control operation box is provided with a start button and an emergency stop button, the start button is pressed when the pneumatic control operation box is started, and the stop button is pressed when the pneumatic control operation box is stopped. The machine operates by pressing the start button. If some unpredictable problems are met in the operation process, an operator can press the emergency stop button in time, and loss caused by misoperation of machines or personnel is avoided.

The second technical solution adopted by the present invention to solve the above technical problems is as follows:

a folding method based on a carton folding apparatus, comprising the steps of:

firstly, manually checking whether safety hazards exist at the periphery of equipment, placing a paperboard in a space formed by an upper guide plate and a lower guide plate through front end mechanical arm equipment, limiting the dropping of the paperboard through a stop block connected with the ends of two symmetrically arranged cylinders thirteen, ventilating a cylinder II, enabling a piston rod of the cylinder II to move upwards, enabling a lifting plate I to move upwards to a specified stroke position, enabling the cylinders thirteen at two ends to move, resetting the piston rod simultaneously, returning the stop block, enabling the paperboard to drop onto symmetrically arranged suction nozzles, sucking the paperboard by the suction nozzles, ventilating a cylinder I, enabling the piston rod of the cylinder I to push the specified stroke distance forwards, and enabling a connecting plate to move to the specified stroke position along a linear slide rail slide block due to the fact that the connecting plate is fixed with a connecting rod head I at the end of the cylinder I and the cylinder II, enabling the paperboard to just enter the inlet end of a, the second air cylinder and the first air cylinder piston rod reset, the synchronous motor is started, the driving shaft and the first roller rotate, the driven shaft and the second roller rotate due to the meshing transmission of the driving gear and the driven gear, and the paper board is conveyed to a specified stroke position to stop in a gap formed by the first roller and the second roller through the rotation of the two rollers.

And secondly, when the paperboard is conveyed to a specified position through the rotation of the two rollers, the eleven cylinders positioned on the two sides of the upper plate are simultaneously ventilated, the piston rods of the eleven cylinders move downwards at a specified stroke distance simultaneously to push the mold to stop at a certain distance, the lower surface of the mold contacts the upper surface of the paperboard, the piston rods of the twelve cylinders positioned in the middle position move downwards at a specified stroke distance, the pressing mold contacts the upper surface of the paperboard, and the paperboard is molded into a rectangle with a certain depth through the mold.

Thirdly, ventilating with a fourteen cylinder, moving a piston rod downwards for a specified stroke distance, lowering a second lifting plate and a paperboard above the second lifting plate to a specified stroke position, enabling the second lifting plate to be flush with a second bottom plate, pushing an inclined block forwards by a ninth cylinder to fold the left side of the paperboard, ventilating with a sixth cylinder, enabling an external thread at the shaft end of the piston rod to be matched and fixed with an internal thread of a rack, pushing the rack forwards for a certain distance, rotating with a gear meshed and driven by the rack, enabling a rolling shaft to rotate with the rack for a certain angle, enabling a folding plate arranged at the middle position of the rolling shaft to fold side plates folded by the paperboard, arranging an eighth cylinder at the front end and the rear end of the second bottom plate, connecting the shaft end of the eighth cylinder with a third push plate, simultaneously installing first guide shafts at two symmetrical sides of the eight cylinder, installing one end of the first guide shafts on the third end plate, fixing a thin cylinder on, in addition, a fifth cylinder is arranged at the front end and the rear end of the second bottom plate, a second end plate is connected with the shaft end of the fifth cylinder, guide rods are installed on two symmetrical sides of the fifth cylinder, one end of each guide rod is installed on the second end plate, a flanging plate is installed at one end of each guide rod, a spring is installed between the flanging plate and the first end plate, the fifth cylinders at two ends are simultaneously ventilated, piston rods of the fifth cylinders simultaneously move the same distance from the guide rods on two sides of the cylinder along the appointed stroke, the flanging plate carries out flanging on the front side and the rear side of the paper board, a third cylinder is symmetrically arranged on the left side of the second bottom plate at an upper included.

Fourthly, the paper board which finishes the edge folding action is sucked by the sucker, the cylinder is ventilated, the piston rod of the cylinder is pushed forwards, the moving block moves along with the piston rod, and the sucker on the cylinder also moves for a certain stroke distance along with the piston rod, so that the output action is realized. And the lid is turned over and sealed through the rear-end equipment.

The invention is different from the existing equipment adopting a linear conveying mode, the paperboard is conveyed to a certain position by adopting a vertical conveying mode and a horizontal conveying mode, the paperboard is output to a position with a specified distance between two rollers, the paperboard is lowered to the folding station through a lifting plate, each step of action is carried out to complete folding, and finally the paperboard is sucked and output through a sucking disc, so that the problem that the station connection street-shooting is slow due to linear conveying is solved well.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a carton folding apparatus of the present invention;

FIG. 2 is a schematic view of a characteristic mechanism of the carton folding apparatus of the present invention;

FIG. 3 is a schematic view of a feeding mechanism in the characteristic mechanism of the carton folding apparatus of the present invention;

FIG. 4 is a planar view of a loading mechanism in the characterizing mechanism of the carton folding apparatus of the present invention;

FIG. 5 is a partially enlarged view of a feeding mechanism of the characteristic mechanism of the carton folding apparatus of the present invention;

FIG. 6 is a three-dimensional schematic view of a feeding mechanism in the characteristic mechanism of the carton folding apparatus of the present invention;

FIG. 7 is a schematic view of a folding mechanism of the characteristic mechanism of the carton folding apparatus of the present invention;

fig. 8 is a three-dimensional partial schematic view of a folding mechanism in the characteristic mechanism of the carton folding apparatus of the present invention.

Fig. 9 is a schematic view of a main body folding mechanism in the characteristic mechanism of the carton folding apparatus of the present invention.

Fig. 10 is a planar view of the main body folding mechanism in the characteristic mechanism of the carton folding apparatus of the present invention.

Fig. 11 is a schematic view showing a state before and after folding of a paper cassette in the paper cassette folding apparatus of the present invention.

In the drawings:

1. frame 2, characteristic mechanism 3, gas accuse operation box

4. Feed mechanism 5, main part folding mechanism 6, hem mechanism

8. Upper guide plate 9, paperboard 10 and lower guide plate

11. First cylinder 12, first connecting rod head 13 and linear slide rail slide block

14. Second connecting rod head 15, second air cylinder 16 and first lifting plate

17. First bottom plate 18, connecting plate 19 and sliding block

20. Suction nozzle 21, synchronous motor 22, synchronous belt

23. Bearing seat I24, synchronous pulley 25 and shaft sleeve

26. A driving shaft 27, a roller I28 and a driving gear

29. Bearing block II 30, driven shaft 31 and roller II

32. Driven gear 78, cylinder thirteen

34. A second bottom plate 35, a third cylinder 36 and a first push plate

37. Cylinder four 38, push plate two 39 and bottom plate three

40. End plate I41, cylinder five 42 and cylinder five

43. Guide rod 44, spring 45 and edge folding plate

46. Six 47 air cylinders, 48 racks and gears

49. Roller 50, bearing seat III 51 and outlet clamping plate

52. Seven 53 air cylinders, four 54 bottom plates and three push plates

55. Thin cylinder 56, side folding block 57 and eight cylinders

58. End plate three 59, guide shaft one 79 and cylinder fourteen

80. Cylinder support 81, second lifting plate 82 cylinder nine

83. Oblique block 84, folding plate

60. Suction cup hanging block 61, suction cup 62 and discharge sloping plate

63. Aluminum profile 64, second guide shaft 65 and moving block

66. Floating joint I67, cylinder IV 68 and guide shaft III

69. Linear bearing 70, cylinder eleven 71 and cylinder twelve

72. Upper plate 73, upright 74 and floating joint II

75. Die 76, floating joint III 77 and pressing die

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in fig. 1 and 2, the carton folding device comprises a rack 1, a characteristic mechanism 2 and a pneumatic control operation box 3, and is characterized in that: the characteristic mechanism 2 is fixed above the frame 1; the pneumatic control operation box 3 is fixed on a bracket in the middle of the frame 1 and is positioned right above the characteristic mechanism 2; the characteristic mechanism 2 comprises a feeding mechanism 4, a main body folding mechanism 5 and a folding mechanism 6; the feeding mechanism 4 is positioned on the left side of the characteristic mechanism 2; the edge folding mechanism 6 is positioned at the middle lower part of the characteristic mechanism 2; the main body folding mechanism 5 is located at the middle upper part of the characteristic mechanism 2.

As shown in fig. 3, 4, 5, and 6, the feeding mechanism 4 is composed of an upper guide plate 8, a paper plate 9, a lower guide plate 10, a first cylinder 11, a first link head 12, a linear slide rail slider 13, a second link head 14, a second cylinder 15, a first lifting plate 16, a first bottom plate 17, a connecting plate 18, a slider 19, a suction nozzle 20, a synchronous motor 21, a synchronous belt 22, a first bearing seat 23, a synchronous pulley 24, a shaft sleeve 25, a driving shaft 26, a first roller 27, a driving gear 28, a second bearing seat 29, a driven shaft 30, a second roller 31, a driven gear 32, and a thirteen cylinder 78; the upper guide plate 8 is fixed on a bracket in the middle of the rack 1 through a threaded nut and forms an included angle of 135 degrees with the horizontal plane; the lower guide plate 10 is fixed on the first bottom plate 17 through a threaded nut and forms an angle of 135 degrees with the horizontal plane; the space formed by the upper guide plate 8 and the lower guide plate 10 is a space, namely, an inclined plane is formed at an angle of 45 degrees with the horizontal plane; the two cylinder thirteen 78 are symmetrically arranged on a bracket of the inclined plane middle frame 1 formed by the upper guide plate 8 and the lower guide plate 10 through threaded nuts, the shaft ends of the two cylinder thirteen 78 are both connected with a stop block, and the two cylinder thirteen 78 are in an initial state of an output state; the paper board 9 is placed in a space formed by the upper guide plate 8 and the lower guide plate 10 under the action of front end manipulator equipment, and two blocking blocks are arranged on two sides of the middle part of the paper board 9 to prevent the paper board 9 from falling; the first base plate 17 is fixed on a vertical support on the rack 1 through a threaded nut, and a rectangular groove is machined in the middle of the first base plate 17; the cylinder I11 is fixed below the base plate I17 through a threaded nut, the shaft end of the cylinder I11 is locked at one end of the connecting rod head I12 through threads, the other end of the connecting rod head I12 is connected and fastened with the connecting plate 18 through a pin, and the connecting plate 18 can rotate around the central shaft of the pin; the connecting plate 18 is fixed on the sliding block 19 through a threaded nut; the slide block 19 is fastened on the linear slide rail slide block 13 and can slide back and forth along the linear slide rail slide block 13; the two suction nozzles 20 are fastened on the connecting plate 18 through threaded nuts; the lifting plate I16 is fixed below the base plate I17 through a pin, is parallel to the cylinder I11 and is fixed on the base plate I17, and can rotate around the central shaft of the pin; the linear slide rail sliding block 13 is fixedly arranged on the first lifting plate 16 through a screw; the second connecting rod head 14 is fixed below the first lifting plate 16 through a threaded nut; one end of the second air cylinder 15 is fixed on a support on the rack 1 through a threaded nut, the other end of the second air cylinder 15 is fixed on the second connecting rod head 14 through a pin, and the second air cylinder 15 can rotate around the axis of the pin; the synchronous motor 21 is fixed at the other end of the first base plate 17 through a threaded nut, and the shaft end of the synchronous motor 21 is provided with synchronous belt wheels 24 of the same type; the synchronous belt 22 is connected with two synchronous belt wheels 24; the two first bearing blocks 23 are fixed on a bracket of the rack 1 through threaded nuts; the driving shaft 26 is fixed on the bearing seat I23 and can rotate around the central shaft of the bearing seat I23; the first roller 27 is fastened in the middle of the driving shaft 26 and can rotate along with the driving shaft 26; the shaft sleeve 25 is fixed on the left side of the driving shaft 26; the synchronous belt wheel 24 is fastened on the driving shaft 26 under the action of a shaft sleeve and can rotate along with the driving shaft 26; the driving gear 28 is fastened on the driving shaft 26 and can rotate along with the driving shaft 26; the two second bearing blocks 29 are fixed on the bracket of the frame 1 through threaded nuts and are positioned below the first bearing blocks 23; the driven shaft 30 is fixed on the second bearing seat 29 and can rotate around the central shaft of the second bearing seat 29; the second roller 31 is fastened in the middle of the driven shaft 30 and can rotate along with the driven shaft 30; the driven gear 32 is fastened on the driven shaft 30 and can rotate along with the driven shaft 30; the drive gear 28 is in meshing engagement with the driven gear 32.

As shown in fig. 7 and 8, the folding mechanism 5 is composed of a second bottom plate 34, a third cylinder 35, a first push plate 36, a fourth cylinder 37, a second push plate 38, a third bottom plate 39, a first end plate 40, a fifth cylinder 41, a second end plate 42, a guide rod 43, a spring 44, a folding plate 45, a sixth cylinder 46, a rack 47, a gear 48, a roller 49, a third bearing seat 50, an outlet clamp plate 51, a seventh cylinder 52, a fourth bottom plate 53, a third push plate 54, a thin cylinder 55, a side folding block 56, an eighth cylinder 57, a third end plate 58, a first guide shaft 59, a fourteenth cylinder 79, a cylindrical support 80, a second lifting plate 81, a ninth cylinder 82, an inclined block 83 and a folding plate 84; the cylindrical support 80 is fixed on the middle support of the frame 1 through a threaded nut; the air cylinder fourteen 79 is fixed on the cylindrical support 80 through a threaded nut; the two second lifting plates 81 are symmetrically fastened on a piston rod of the air cylinder fourteen 79 through threaded nuts; the second bottom plate 34 is fixed on a middle support of the rack 1 through a threaded nut and is positioned above the cylindrical support 80; the cylinder nine 82 is fixed on the left side of the middle part of the second bottom plate 34 through a threaded nut; one end of the inclined block 83 is fastened at the shaft end of the cylinder nine 82 through threaded connection, can move back and forth along with the stretching of the cylinder nine 82, and is positioned on the upper surface of the second bottom plate 34; the cylinder six 46 is fixed at the lower left corner of the bottom plate two 34 through a threaded nut, and the shaft end of the cylinder six 46 is matched and fixed with the internal thread of the rack 47 through an external thread; the third bearing seat 50 is fastened below the second base plate 34 through a threaded nut; the roller 49 is fixed in the shaft hole of the bearing seat III 50 and can rotate along with the axis of the bearing seat III 50; the gear 48 is fastened at the lower end of the roller 49 and can rotate along with the roller 49, and the gear 48 is matched with the rack 47 and can carry out meshing transmission; the folding plate 84 is welded at the middle position of the roller 49 and folds the folded left side plate of the paper board 9; the third end plate 58 is fastened to the lower right of the second bottom plate 34 through a threaded nut; the two cylinders eight 57 are fixed on the end plate three 58 in parallel through threaded nuts; the shaft ends of the two cylinders eight 57 are connected with a third push plate 54 through threads; one ends of the two guide shafts one 59 are fastened on the end plate three 58 through threaded nuts, and the other ends of the two guide shafts one 59 penetrate through two round holes of the push plate three 54; the third push plate 54 can move back and forth along the central axes of the two cylindrical holes of the third push plate under the action of the eight cylinder 57; the left side and the right side of the third push plate 54 are fixed with a thin cylinder 55 through bolts; the morning shaft end of the thin cylinder 55 is connected with a side folding block 56 through threads; the whole of the third push plate 54, the thin cylinder 55, the side folding block 56, the eighth cylinder 57, the third end plate 58 and the first guide shaft 59 are arranged on the left side of the second bottom plate 34 in a bilateral symmetry mode; the two cylinders five 41 are respectively fastened on the two end plates one 40 through threaded nuts; the two first end plates 40 are fastened at the front end and the rear end of the second bottom plate 34 through threaded nuts, and two cylindrical holes are formed in the first end plates 40; the shaft end of the cylinder fifth 41 is connected with an end plate second 42 through threads; one end of each guide rod 43 is fastened on the second end plate 42 through a threaded nut and is positioned on two sides of the fifth cylinder 41; the other ends of the two guide rods 43 respectively penetrate through two cylindrical holes in the first end plate 40 and are connected with the flanging plate 45 through threads, and the central axes of the guide rods 43 are parallel to the central axis of the fifth cylinder 41; the guide rod 43 can move back and forth along the central axis of the cylindrical hole on the first end plate 40; a spring 44 is arranged between the folded edge plate 45 and the first end plate 40; the third air cylinder 35 is fixed on the left side of the second bottom plate 34 through a threaded nut and symmetrically arranged at an included angle of 45 degrees from top to bottom; the first push plate 36 is fixed with the shaft end of the third air cylinder 35 through threads; the cylinder IV 37 is fixed on the right side of the bottom plate II 34 through a threaded nut and is symmetrically arranged at an included angle of 45 degrees up and down; the second push plate 38 is fixed with the shaft end of the fourth air cylinder 37 through threads; the third bottom plate 39 is fastened above the right side of the second bottom plate 34 through a threaded nut and forms a 30-degree included angle with the second bottom plate 34; the fourth bottom plate 53 is fastened on the upper side and the lower side of the right side of the second bottom plate 34 through threaded nuts, and has an included angle of 30 degrees with the second bottom plate 34 like the third bottom plate 39; the cylinder seven 52 is fixed on the bottom plate four 53 through a threaded nut; the outlet clamp plate 51 is connected with the shaft end of the air cylinder seven 52 through a threaded connection.

As shown in fig. 9, 10 and 11, the main body folding mechanism 6 comprises a suction cup hanging block 60, a suction cup 61, a discharge sloping plate 62, an aluminum profile 63, a second guide shaft 64, a moving block 65, a first floating joint 66, a cylinder ten 67, a third guide shaft 68, a linear bearing 69, a cylinder eleven 70, a cylinder twelve 71, an upper plate 72, a vertical column 73, a second floating joint 74, a die 75, a third floating joint 76 and a pressing die 77; the four upright posts 73 are fixed on the bracket of the characteristic mechanism 2 through threaded nuts; the upper plate 72 is fixed on the upper surfaces of the four columns 73 through threaded nuts; the cylinder twelve 71 is fixed on the upper surface of the upper plate 72 through a threaded nut; the two cylinders eleven 70 are fixed on the upper surface of the upper plate 72 through threaded nuts; the one cylinder twelve 71 and the two cylinders eleven 70 are arranged in three rows, and the cylinder twelve 71 is positioned in the middle of the two cylinders eleven 70; the shaft end of the cylinder twelve 71 is fastened at one end of the floating joint three 76; the other end of the floating joint III 76 is fastened above the pressing die 77 through internal thread fit; the shaft ends of the two cylinders eleven 70 are respectively fastened at one end of the floating joint II 74; the other end of the second floating joint 74 is fastened above the die 75 through internal thread fit; two sides of the eleven cylinder 70 and the twelve cylinder 71 are respectively provided with a third guide shaft 68 and a linear bearing 69; the linear bearing 69 is fastened to the upper plate 72 by a threaded nut; the third guide shaft 68 penetrates through the linear bearing 69, and the lower end of the third guide shaft is fastened with a die 75 through threaded connection; the third guide shaft 68 can move back and forth along the central axis of the linear bearing 69; the cylinder ten 67 is fixed on a bracket on the upper plate 72 through a threaded nut and is positioned at the left side of the upper surface of the upper plate 72; one end of the first floating joint 66 is fastened with the shaft end of the cylinder 67 through threads; the other end of the first floating joint 66 is fastened with a moving block 65 through threads; the aluminum profile 63 is fastened on a bracket on the upper plate 72 through a threaded nut, and the aluminum profile 63 is positioned below the cylinder cross 67; the second guide shaft 64 is fixed on the aluminum section bar 63 through a threaded nut; a cylindrical hole is formed in the middle of the moving block 65 and penetrates through the second guide shaft 64, and the moving block 65 can move back and forth along the central axis of the second guide shaft 64; the sucker hanging block 60 is fastened on the moving block 65 through a threaded nut and can move back and forth along with the moving block 65; the sucker 61 is fastened on the sucker hanging block 60 through a threaded nut, and the sucker hanging block 60 can move back and forth; the discharge chute 62 is fastened to the left edge of the die 75 by a threaded nut.

The folding method based on the carton folding equipment comprises the following steps:

firstly, manually checking whether safety hazards exist at the periphery of equipment, placing a paper board 9 in a space formed by an upper guide plate 8 and a lower guide plate 10 through front end mechanical arm equipment, limiting the falling of the paper board 9 through a stop block connected with the shaft ends of two symmetrically arranged cylinders thirteen 78 at the middle position of a formed inclined plane, ventilating a cylinder two 15, enabling a piston rod of the cylinder two to move upwards, enabling a lifting plate one 16 to move upwards to a specified stroke position, enabling the cylinders thirteen 78 at two ends to move, simultaneously resetting the piston rod, returning the stop block, enabling the paper board 9 to fall onto symmetrically arranged suction nozzles 20, sucking the paper board 9 by the suction nozzles 20, ventilating a cylinder one 11, enabling the piston rod of the cylinder one to push forwards for a specified stroke distance, and enabling the connecting plate 18 to move to the specified stroke position along a linear sliding rail sliding block 13 because the connecting plate 18 is fixed with a connecting rod head 12 at the shaft end of the cylinder one 11, enabling the paper board 9 to just, the piston rods of the second air cylinder 15 and the first air cylinder 11 are reset, the synchronous motor 21 is started, the driving shaft 26 and the first roller 27 rotate, the driven shaft 30 and the second roller 31 rotate due to the meshing transmission of the driving gear 28 and the driven gear 32, and the paper board 9 is conveyed to a specified stroke position and stopped in a gap formed by the first roller 27 and the second roller 31 through the rotation of the two rollers.

Secondly, when the paper board 9 is conveyed to a specified position through the rotation of the two rollers, the air cylinders eleven 70 positioned on both sides of the upper plate 72 are simultaneously ventilated, piston rods of the air cylinders eleven move downwards at a specified stroke distance simultaneously to push the die 75 to a certain distance position to stop, the lower surface of the die 75 contacts with the upper surface of the paper board 9, the piston rods of the air cylinders twelve 71 positioned in the middle position move downwards at a specified stroke distance, the pressing die 77 contacts with the upper surface of the paper board 9, and the paper board 9 is molded into a rectangle with a certain depth through the die 75.

Thirdly, ventilating a fourteen 79 air cylinder, moving a piston rod downwards for a specified stroke distance, lowering a second lifting plate 81 and a paperboard 9 above the second lifting plate to a specified stroke position, enabling the second lifting plate 81 to be flush with a second bottom plate 34, pushing a sloping block 83 forwards by an air cylinder nine 82, folding the left side of the paperboard 9, ventilating an air cylinder six 46, matching and fixing external threads at the shaft end of the piston rod with internal threads of a rack 47, enabling the rack 47 to push forwards for a certain distance, enabling a gear 48 meshed with the rack 47 to rotate along with the rack, enabling a rolling shaft 49 to rotate for a certain angle along with the rack, enabling a folding plate 84 arranged at the middle position of the rolling shaft 49 to fold side plates folded by the paperboard 9, arranging eight 57 air cylinders at the front and rear ends of the second bottom plate 34, connecting the shaft ends of the eight 57 air cylinders with a pushing plate 54, simultaneously installing first guide shafts 59 at two symmetrical sides of the eight cylinders 57, installing one ends, fixing a thin cylinder 55 on a third push plate 54 through bolts, installing a side folding block 56 at the shaft end of the thin cylinder 55, arranging five cylinders 41 at the front end and the rear end of a second bottom plate 34, connecting the shaft ends of the five cylinders 41 with a second end plate 42, installing guide rods 43 at two symmetrical sides of the five cylinders 41, installing one ends of the guide rods 43 on the second end plate 42, installing a folding plate 45 at one end, installing springs 44 between the folding plate 45 and the first end plate 40, ventilating the five cylinders 41 at two ends simultaneously, moving piston rods of the five cylinders simultaneously by a specified stroke and moving the same distance from the guide rods 43 at two sides of the cylinders simultaneously, folding the front side and the rear side of the paper plate 9 by the folding plate 45, arranging the three cylinders 35 symmetrically at the upper side and the lower side of the second bottom plate 34 by an included angle of 45 degrees, ventilating simultaneously, and.

Fourthly, the paper board 9 which finishes the edge folding action is sucked by the suction cup 61, the cylinder 67 is ventilated, the piston rod of the cylinder is pushed forwards, the moving block 65 moves along with the piston rod, and the suction cup 61 on the cylinder moves for a certain stroke distance along with the piston rod, so that the output action is realized. And the lid is turned over and sealed through the rear-end equipment.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims

1. The utility model provides a carton folding equipment, includes frame (1), characteristic mechanism (2), gas accuse operation box (3), its characterized in that: the characteristic mechanism (2) is fixed above the rack (1); the pneumatic control operation box (3) is fixed on a support in the middle of the rack (1) and is positioned right above the characteristic mechanism (2); the characteristic mechanism (2) comprises a feeding mechanism (4), a main body folding mechanism (5) and a folding mechanism (6); the feeding mechanism (4) is positioned on the left side of the characteristic mechanism (2); the edge folding mechanism (6) is positioned below the middle part of the characteristic mechanism (2); the main body folding mechanism (5) is positioned above the middle upper part of the characteristic mechanism (2).

2. The carton folding device according to claim 1, characterized in that the feeding mechanism (4) is composed of an upper guide plate (8), a paperboard (9), a lower guide plate (10), a first cylinder (11), a first connecting rod head (12), a linear slide rail slider (13), a second connecting rod head (14), a second cylinder (15), a first lifting plate (16), a first bottom plate (17), a connecting plate (18), a slider (19), a suction nozzle (20), a synchronous motor (21), a synchronous belt (22), a first bearing seat (23), a synchronous belt wheel (24), a shaft sleeve (25), a driving shaft (26), a first roller (27), a driving gear (28), a second bearing seat (29), a driven shaft (30), a second roller (31), a driven gear (32) and a thirteen cylinder (78); the upper guide plate (8) is fixed on a bracket in the middle of the rack (1) through a threaded nut and forms an included angle of 135 degrees with the horizontal plane; the lower guide plate (10) is fixed on the first bottom plate (17) through a threaded nut and forms an angle of 135 degrees with the horizontal plane; the space formed by the upper guide plate (8) and the lower guide plate (10) is a space, namely, an inclined plane is formed at an angle of 45 degrees with the horizontal plane; the two cylinders thirteen (78) are symmetrically arranged on a bracket of the inclined plane middle frame (1) formed by the upper guide plate (8) and the lower guide plate (10) through threaded nuts, the shaft ends of the two cylinders thirteen (78) are both connected with a blocking block, and the initial state of the two cylinders thirteen (78) is an output state; the paper board (9) is placed in a space formed by the upper guide plate (8) and the lower guide plate (10) under the action of the front end mechanical arm equipment, and two blocking blocks are arranged on two sides of the middle part of the paper board (9) to prevent the paper board (9) from falling; the first base plate (17) is fixed on a vertical support on the rack (1) through a threaded nut, and a rectangular groove is machined in the middle of the first base plate (17); the cylinder I (11) is fixed below the base plate I (17) through a threaded nut, the shaft end of the cylinder I (11) is locked at one end of the connecting rod I (12) through threads, the other end of the connecting rod I (12) is fastened with the connecting plate (18) through pin connection, and the connecting plate (18) can rotate around the central shaft of the pin; the connecting plate (18) is fixed on the sliding block (19) through a threaded nut; the sliding block (19) is fastened on the linear sliding rail sliding block (13) and can slide back and forth along the linear sliding rail sliding block (13); the two suction nozzles (20) are fastened on the connecting plate (18) through threaded nuts; the lifting plate I (16) is fixed below the base plate I (17) through a pin, is parallel to the cylinder I (11), is fixed on the base plate I (17), and can rotate around a central shaft of the pin; the linear slide rail sliding block (13) is fixedly arranged on the first lifting plate (16) through a screw; the second connecting rod head (14) is fixed below the first lifting plate (16) through a threaded nut; one end of the second air cylinder (15) is fixed on a support on the rack (1) through a threaded nut, the other end of the second air cylinder (15) is fixed on the second connecting rod head (14) through a pin, and the second air cylinder (15) can rotate around the axis of the pin; the synchronous motor (21) is fixed at the other end of the first bottom plate (17) through a threaded nut, and synchronous belt wheels (24) of the same type are arranged at the shaft end of the synchronous motor (21); the synchronous belt (22) is connected with two synchronous belt wheels (24); the two first bearing blocks (23) are fixed on a bracket of the rack (1) through threaded nuts; the driving shaft (26) is fixed on the first bearing seat (23) and can rotate around the central shaft of the first bearing seat (23); the first roller (27) is fastened in the middle of the driving shaft (26) and can rotate along with the driving shaft (26); the shaft sleeve (25) is fixed on the left side of the driving shaft (26); the synchronous belt wheel (24) is fastened on the driving shaft (26) under the action of the shaft sleeve and can rotate along with the driving shaft (26); the driving gear (28) is fastened on the driving shaft (26) and can rotate along with the driving shaft (26); the two second bearing blocks (29) are fixed on a bracket of the rack (1) through threaded nuts and are positioned below the first bearing blocks (23); the driven shaft (30) is fixed on the second bearing seat (29) and can rotate around the central shaft of the second bearing seat (29); the second roller (31) is fastened in the middle of the driven shaft (30) and can rotate along with the driven shaft (30); the driven gear (32) is fastened on the driven shaft (30) and can rotate along with the driven shaft (30); the driving gear (28) is meshed and matched with the driven gear (32).

3. The carton folding apparatus according to claim 1, wherein the main body folding mechanism (5) is composed of a suction cup hanging block (60), a suction cup (61), a discharge sloping plate (62), an aluminum profile (63), a second guide shaft (64), a moving block (65), a first floating joint (66), a tenth air cylinder (67), a third guide shaft (68), a linear bearing (69), an eleventh air cylinder (70), a twelfth air cylinder (71), an upper plate (72), an upright post (73), a second floating joint (74), a mold (75), a third floating joint (76) and a pressing mold (77); the four upright posts (73) are fixed on a bracket of the characteristic mechanism (2) through threaded nuts; the upper plate (72) is fixed on the upper surfaces of the four upright posts (73) through threaded nuts; the cylinder twelve (71) is fixed on the upper surface of the upper plate (72) through a threaded nut; the eleven cylinders (70) are fixed on the upper surface of the upper plate (72) through threaded nuts; the one cylinder twelve (71) and the two cylinders eleven (70) are arranged in three rows, and the cylinder twelve (71) is positioned in the middle of the two cylinders eleven (70); the shaft end of the cylinder twelve (71) is fastened at one end of the floating joint three (76); the other end of the floating joint III (76) is fastened above the pressing die (77) through internal thread fit; the shaft ends of the two cylinders eleven (70) are respectively fastened at one end of the floating joint II (74); the other end of the second floating joint (74) is fastened above the die (75) through internal thread fit; two sides of the eleven cylinder (70) and the twelve cylinder (71) are respectively provided with a guide shaft III (68) and a linear bearing (69); the linear bearing (69) is fastened on the upper plate (72) through a threaded nut; the third guide shaft (68) penetrates through the linear bearing (69), and the lower end of the third guide shaft is fastened with a die (75) through threaded connection; the third guide shaft (68) can move back and forth along the central axis of the linear bearing (69); the cylinder ten (67) is fixed on a bracket on the upper plate (72) through a threaded nut and is positioned at the left side of the upper surface of the upper plate (72); one end of the floating joint I (66) is fastened with the shaft end of the cylinder II (67) through threads; the other end of the floating joint I (66) is fastened with a moving block (65) through threads; the aluminum profile (63) is fastened on a support on the upper plate (72) through a threaded nut, and the aluminum profile (63) is positioned below the cylinder ten (67); the second guide shaft (64) is fixed on the aluminum profile (63) through a threaded nut; a cylindrical hole is formed in the middle of the moving block (65) and penetrates through the second guide shaft (64), and the moving block (65) can move back and forth along the central axis of the second guide shaft (64); the sucker hanging block (60) is fastened on the moving block (65) through a threaded nut and can move back and forth along with the moving block (65); the sucker (61) is fastened on the sucker hanging block (60) through a threaded nut, and the sucker hanging block (60) can move back and forth together; the discharging inclined plate (62) is fastened at the left edge of the die (75) through a threaded nut.

4. A carton folding apparatus as claimed in claim 1, characterised in that said creasing mechanism (5) consists of a second base plate (34), a third cylinder (35), a first push plate (36), a fourth cylinder (37), a second push plate (38), a third base plate (39), a first end plate (40), a fifth cylinder (41), a second end plate (42), a guide rod (43), a spring (44), a creasing plate (45), a sixth cylinder (46), a rack (47), a gear (48), a roller (49), the device comprises a bearing seat III (50), an outlet clamping plate (51), a cylinder VII (52), a bottom plate IV (53), a push plate III (54), a thin cylinder (55), a side folding block (56), a cylinder VIII (57), an end plate III (58), a guide shaft I (59), a cylinder fourteen (79), a cylindrical support (80), a lifting plate II (81), a cylinder nine (82), an inclined block (83) and a pressing folding plate (84); the cylindrical support (80) is fixed on a middle support of the rack (1) through a threaded nut; the air cylinder fourteen (79) is fixed on the cylindrical support (80) through a threaded nut; the two second lifting plates (81) are symmetrically fastened on a piston rod of the air cylinder fourteen (79) through threaded nuts; the second bottom plate (34) is fixed on a middle support of the rack (1) through a threaded nut and is positioned above the cylindrical support (80); the cylinder nine (82) is fixed on the left side of the middle part of the second bottom plate (34) through a threaded nut; one end of the inclined block (83) is fastened at the shaft end of the cylinder nine (82) through threaded connection, can move back and forth along with the stretching of the cylinder nine (82), and is positioned on the upper surface of the second bottom plate (34); the six air cylinders (46) are fixed at the lower left corner of the second bottom plate (34) through threaded nuts, and the shaft ends of the six air cylinders (46) are matched and fixed with the internal threads of the rack (47) through external threads; the third bearing seat (50) is fastened below the second base plate (34) through a threaded nut; the roller (49) is fixed in a shaft hole of the bearing seat III (50) and can rotate along with the axis of the bearing seat III (50); the gear (48) is fastened at the lower end of the roller (49) and can rotate along with the roller (49), and the gear (48) is matched with the rack (47) and can carry out meshing transmission; the folding plate (84) is welded in the middle of the roller (49) and folds the folded left side plate of the paperboard (9); the third end plate (58) is fastened to the lower right of the second bottom plate (34) through a threaded nut; the two cylinders eight (57) are fixed on the end plate three (58) in parallel through threaded nuts; the shaft ends of the two cylinders eight (57) are connected with the third push plate (54) through threads; one ends of the two guide shafts I (59) are fastened on the end plate III (58) through threaded nuts, and the other ends of the two guide shafts I (59) penetrate through two round holes of the push plate III (54); the third push plate (54) can move back and forth along the central axes of the two cylindrical holes of the third push plate under the action of the eighth cylinder (57); the left side and the right side of the third push plate (54) are fixed with a thin cylinder (55) through bolts; the morning shaft end of the thin cylinder (55) is connected with a side folding block (56) through threads; the push plate III (54), the thin cylinder (55), the side folding block (56), the cylinder IV (57), the end plate III (58) and the guide shaft I (59) are integrally and bilaterally symmetrically arranged on the left side of the bottom plate II (34); the two cylinders (41) are respectively fastened on the two end plates (40) through threaded nuts; the two first end plates (40) are fastened at the front end and the rear end of the second bottom plate (34) through threaded nuts, and two cylindrical holes are formed in the first end plates (40); and the shaft end of the cylinder five (41) is connected with the end plate two (42) through threads.