CN113306197A

CN113306197A - Creasing method and creasing equipment for corrugated board

Info

Publication number: CN113306197A
Application number: CN202110633576.1A
Authority: CN
Inventors: 朱梁帅
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-08-27

Abstract

The invention provides an indentation method and indentation equipment for corrugated boards, wherein the indentation method comprises the following steps: conveying the corrugated boards one by one at a constant speed; the corrugated board is turned from top to bottom, glue spreading and film covering are sequentially carried out on the film covering surface of the corrugated board in the turning process, and the corrugated board is finally turned over for 180 degrees and turned from the film covering surface to the indentation surface upwards; processing continuous indentation lines on the indentation surface of the corrugated board; and stacking the paperboard subjected to indentation processing. According to the invention, the compression strength of the corrugated board indentation part is improved, the rapid indentation processing of the corrugated board is realized, the automation degree of the indentation equipment is higher, the corrugated board does not need to be carried frequently, the labor intensity is reduced, and the processing efficiency is improved.

Description

Creasing method and creasing equipment for corrugated board

Technical Field

The invention relates to the field of paperboard processing, in particular to a method and equipment for creasing a corrugated paperboard.

Background

The corrugated board is die-cut and unfolded to form a preset shape, then the line pressing is carried out on the appropriate position of the corrugated board, and then the corrugated board is turned over along the pressed indentation line, so that the corrugated board can be folded into a corrugated carton. At present, in the use process of corrugated case, the condition that corrugated board indentation takes place to damage often can appear. The reason is that the indentation part of the corrugated board has low strength and is easily crushed under the pressure of objects in the box for a long time. In order to solve the problem of insufficient strength of the corrugated board indentation part, sticking strip-shaped films or paper at corresponding positions on the back of the corrugated board indentation part can be considered.

Patent application No. 2018108863318 discloses a novel cardboard surface indentation device, pastes the scotch tape in corrugated container board's one side, and the another side carries out the indentation, can strengthen the compressive strength at corrugated container board indentation position, but the device still exists following not enoughly: (1) only one corrugated board can be indented at a time, the processing efficiency is low, and the indentation processing of the corrugated boards in batches is not suitable; (2) the feeding and the blanking of the corrugated board need to be carried out manually, and the transparent adhesive tape needs to be pulled or separated out of the corrugated board manually before and after the indentation, so that the labor intensity is high, and the automation degree is low.

Disclosure of Invention

The invention aims to provide a corrugated board creasing method and creasing equipment, which are used for improving the compressive strength of a corrugated board creasing part and realizing rapid creasing of a corrugated board.

The invention provides a method for indenting a corrugated board, which comprises the following steps:

s1, paperboard feeding: conveying the corrugated boards one by one at a constant speed;

s2, conveying paper boards: the corrugated board is turned from top to bottom, glue spreading and film covering are sequentially carried out on the film covering surface of the corrugated board in the turning process, and the corrugated board is finally turned over for 180 degrees and turned from the film covering surface to the indentation surface upwards;

s3, paperboard indentation: processing continuous indentation lines on the indentation surface of the corrugated board;

s4, paperboard stacking: and stacking the paperboard subjected to indentation processing.

Preferably, the specific step of S1 includes:

s11, bearing the paper boards stacked into the stock pile through the cross beam, and pushing the corrugated paper boards on the lowest layer of the stock pile out of the cross beam forwards along the transverse direction through the pushing block.

S12, enabling the pushing block to move backwards along the transverse direction, jacking the material pile in the moving process, and resetting to the initial position.

Preferably, the specific step of S2 includes:

and S21, horizontally feeding the corrugated board into a paper board inlet formed by the conveying belt and the conveying roller.

S22, after entering the paperboard inlet, the paperboard is clamped by the conveying belt and the conveying roller, attached to the curved surface of the conveying roller and overturned downwards from top to bottom.

S23, in the process that the paperboard is turned downwards, glue is distributed on the film covering surface of the corrugated paperboard through a glue distributing device, and strip-shaped films or paper are pasted on the film covering surface of the corrugated paperboard through the film covering device.

And S24, the paperboard penetrates out of the paperboard outlet, is turned from the film covering surface to the indentation surface upwards after being separated from the conveying roller, and is conveyed to an indentation station by the conveying belt.

Further, in S23, before the glue spreading device applies glue to the film covering surface of the corrugated cardboard, the corrugated cardboard is dedusted by the dedusting wheel.

The invention also provides creasing equipment for the corrugated board, which comprises a rack, a paper feeding device, a conveying device, a gluing device, a film covering device and a creasing device, wherein the paper feeding device, the conveying device, the gluing device, the film covering device and the creasing device are arranged on the rack; the paper feeding device is arranged at the top of the frame and is used for feeding out the corrugated boards one by one and feeding the corrugated boards to the conveying device at a constant conveying speed; the conveying device is used for receiving the paper boards conveyed by the paper feeding device, conveying the paper boards to the impressing device and turning the corrugated paper boards 180 degrees in the conveying process; the glue coating device is positioned at the outer side of the conveying roller and used for coating glue on the corrugated board in the turning motion process of the corrugated board; the film laminating device is positioned below the gluing device and comprises a plurality of film laminating mechanisms, and the plurality of film laminating mechanisms correspond to the plurality of glue guns and are used for adhering strip-shaped films or paper on the corrugated board; the indentation device is arranged at the bottom of the rack and is used for processing indentation lines on the indentation surface of the corrugated board.

Furthermore, the paper feeding device comprises a plurality of cross beams and a plurality of pushing blocks, the cross beams are loaded with corrugated boards in a stock pile form, and the pushing blocks are used for pushing out the corrugated boards on the lower layer of the stock pile one by one; the transverse beams extend along the transverse direction, a plurality of transverse beams are distributed at intervals in the longitudinal direction, a fixed block is arranged on one side of each transverse beam, and the stacked corrugated boards are abutted against one side face of the fixed block; the other side of the cross beam is provided with a clamping plate, the clamping plate extends along the transverse direction, part of the clamping plate is positioned above the cross beam, and a space for accommodating a corrugated board pile is formed between two adjacent clamping plates and the cross beam in a matched manner; the stop block is arranged on the clamping plate and is positioned on the inner side of the clamping plate, and a gap is formed between the stop block and the cross beam, and only one corrugated board can pass through the gap.

Furthermore, the pushing blocks are positioned between two cross beams which are matched with each other, the pushing blocks are connected through a connecting rod, the connecting rod can move transversely along a conveying track, and the conveying track extends transversely and is fixedly installed at the bottom of the cross beams; the propelling movement piece has a propelling movement face and an arc surface, propelling movement face and arc surface all are located the crossbeam top, the propelling movement face is located the front end of propelling movement piece, for the plane that can contact with corrugated container board, the arc surface is located the rear end of propelling movement piece.

Further, the conveying device comprises a first paper supply belt, a conveying roller, a plurality of guide wheels and a plurality of conveying belts; the first paper feeding belt is positioned at the downstream of the paper feeding device, extends along the transverse direction and can receive the corrugated board separated from the cross beam; the conveying roller is positioned at the downstream of the first paper supply belt, extends axially along the longitudinal direction, is in transmission connection with the driving mechanism and is driven by the driving mechanism to rotate; the guide wheels are positioned on the outer side of the conveying roller, are distributed in a staggered manner in the height direction and are distributed at intervals in the longitudinal direction, and the guide wheels positioned at different height positions are in transmission connection through a conveying belt; a gap for clamping the corrugated board is formed between the conveying belt and the conveying roller, a paperboard inlet and a paperboard outlet are formed in a matched mode, the paperboard inlet is located at the top of the conveying roller, and the paperboard outlet is located at the bottom of the conveying roller.

Further, the glue spreading device comprises a plurality of glue guns and glue tanks, wherein the glue guns are positioned on the outer side of the conveying belt and have a preset distance with the conveying roller; the glue gun is communicated with the glue tank and is provided with a nozzle which can be contacted with the corrugated board.

Further, the film covering device is positioned below the glue coating device and comprises a plurality of film covering mechanisms, the plurality of film covering mechanisms correspond to the plurality of glue guns, and each film covering mechanism comprises a material disc, an upper movable arm and a movable wheel; an upper telescopic cylinder, a cutting-off tool and a pinch roller; the material tray is rotationally connected to the rack, and strip-shaped films or paper used for film covering are wound on the periphery of the material tray; the upper end of the upper movable arm is hinged on the rack, and the lower end of the upper movable arm can be close to or far away from the conveying roller; the movable wheel is rotatably connected to the lower end of the upper movable arm, an arc-shaped clamping plate is further formed on the upper movable arm, and a channel for a strip-shaped film or paper to pass through is formed between the arc-shaped clamping plate and the movable wheel in a matched mode; the pressing wheel is positioned below the movable wheel and can be close to or far away from the conveying roller; the cutting-off knife is positioned between the movable wheel and the pressing wheel and is used for cutting off the strip-shaped film or paper between the movable wheel and the pressing wheel.

Further, conveyor still includes the dust removal wheel, the dust removal wheel is located glue the rifle top, and the dust removal brush is installed to the periphery wall, the dust removal brush can contact with corrugated container board's tectorial membrane face.

According to the technical scheme, the invention has the advantages and positive effects that:

according to the invention, the rapid creasing processing of the corrugated board is realized, the automation degree of the creasing equipment is higher, the corrugated board does not need to be frequently carried, the labor intensity is reduced, and the processing efficiency is improved.

The strip-shaped film or paper is firstly pasted on one surface of the corrugated board through the gluing device and the laminating device, and then the indentation is processed on the other surface of the corrugated board through the indentation device.

The corrugated board is conveyed by the conveying belt and the conveying roller in a matched manner, and the corrugated board is turned over by 180 degrees compared with the original state in the conveying process, so that on one hand, the phenomenon that the corrugated board is warped and deformed due to long-time stacking can be avoided, and the quality of the corrugated board is ensured; on the other hand, the glue spreading and film covering processing can be respectively carried out on the corresponding positions of the corrugated board through the glue spreading device and the film covering device in the conveying process, the procedure connection is smooth, and the processing efficiency is high; on the other hand, before the indentation device acts on the corrugated board, the conveying belt and the conveying roller can also play a role in motion guiding for the corrugated board, so that the paperboard is prevented from tilting or deviating in position in an indentation link, and the indentation processing effect is ensured.

Drawings

Fig. 1 is a schematic structural view of a paperboard creasing device in an embodiment of the present invention.

Figure 2 is a schematic structural view of a cardboard creasing device according to another embodiment of the present invention.

FIG. 3 is a schematic view of the structure of the conveying roll of the present invention.

FIG. 4 is a front view schematically showing the structure of the sheet feeding apparatus of the present invention.

Fig. 5 is a schematic plan view of the sheet feeding apparatus of the present invention.

Fig. 6 is a schematic view showing the structure of the second conveyor belt according to the present invention.

Fig. 7 is a schematic structural view of a portion where the conveying apparatus of the present invention is located.

Fig. 8 is a schematic structural view of a portion where the indentation apparatus of the present invention is located.

FIG. 9 is a schematic flow chart of the indentation method of the present invention.

The reference numerals are explained below: 101. corrugated board; 102. a paperboard inlet; 103. a paperboard outlet; 1. a conveying roller; 11. a roll shaft; 111. an air intake passage; 12. an air inlet nozzle; 13. a sleeve; 131. a connecting pipe; 132. a sleeve; 1321. an air outlet; 133. a second annular shoulder; 14. a sealing block; 141. locking the bolt; 142. a first annular shoulder; 15. an elastic tube; 16. a sealing cover; 2. a paper supply device; 21. a stop block; 22. a first paper supply tape; 23. a second paper supply tape; 231. a support; 232. a telescopic bracket; 233. a gear; 234. a lifting drive motor; 235. a rack; 236. a connecting member; 237. a fixed part; 238. a movable portion; 239. a spring; 24. a splint; 25. a pushing block; 26. a fixed block; 27. a connecting rod; 29. a cross beam; 3. a conveying device; 31. a guide wheel; 32. a dust removal wheel; 33. a conveyor belt; 4. a gluing device; 41. a glue gun; 5. an indentation device; 51. a lower telescopic cylinder; 52. an indentation wheel; 53. a lower movable arm; 54. an indentation wheel axle; 55. a pressure bearing wheel; 6. a stacking table; 7. a frame 7; 8. a film covering device; 81. a material tray; 82. an upper movable arm; 83. a movable wheel; 84. an upper telescopic cylinder; 85. a cutting knife; 86. and a pinch roller.

Detailed Description

The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection claimed herein.

Example 1

Referring to fig. 1 and 7, the paperboard creasing device of the present embodiment is used for making one or more creases in a corrugated paperboard sheet 101 (sheet). The paperboard creasing device in the present embodiment comprises a frame 7, a paper feeding device 2 mounted on the frame 7, a conveying device 3, a gluing device 4, a film covering device 8 and a creasing device 5.

Referring to fig. 1, the sheet feeding device 2 is installed at the top of the frame 7, and feeds out corrugated cardboards 101 one by one and to the conveying device 3 at a constant conveying speed. Referring to fig. 4 and 5, the sheet feeding device 2 includes a plurality of cross members 29 and a plurality of pushing blocks 25, the cross members 29 carry corrugated cardboard 101 in a pile, and the pushing blocks 25 are used for pushing out the corrugated cardboard 101 at the bottom of the pile one by one.

For convenience of the following description about the positional relationship, in the present embodiment, the horizontal conveying direction of the corrugated cardboard sheet 101 is defined as the transverse direction, the horizontal direction perpendicular to the transverse direction is defined as the longitudinal direction, the surface on which the strip-shaped film or paper is stuck to the corrugated cardboard sheet is defined as the film-covering surface, and the surface on which the corrugated cardboard creasing line is located is defined as the creasing surface.

The cross beams 29 extend along the transverse direction, a plurality of cross beams 29 are distributed at intervals in the longitudinal direction, a fixing block 26 is arranged on one side of each cross beam 29, and the stacked corrugated boards 101 are abutted against one side face of the fixing block 26; the other side of the cross beam 29 is provided with a clamping plate 24, the clamping plate 24 extends along the transverse direction, part of the clamping plate 24 is positioned above the cross beam 29, and a space for accommodating the corrugated board 101 pile is formed between two adjacent clamping plates 24 and the cross beam 29 in a matching manner. When the pushing block 25 pushes the cardboard, the cardboard sheet 101 can be guided by the movement of the clamping plate 24, so that the cardboard sheet 101 can be moved laterally on a predetermined trajectory. A stop block 21 is mounted on the clamping plate 24, and the stop block 21 is located on the inner side of the clamping plate 24 and has a gap with the cross beam 29, and the gap can only allow one corrugated cardboard sheet 101 to pass through.

The pushing blocks 25 are positioned between two cross beams 29 which are matched with each other, the pushing blocks 25 are connected through a connecting rod 27, the connecting rod 27 can move transversely along a conveying track, and the conveying track extends transversely and is fixedly arranged at the bottom of the cross beam 29; the propelling movement piece 25 has a propelling movement face and an arc surface, propelling movement face and arc surface all are located crossbeam 29 top, the propelling movement face is located the front end of propelling movement piece 25 is the plane that can contact with corrugated container board, the arc surface is located the rear end of propelling movement piece 25.

When the corrugated cardboard 101 is supplied, the connecting rod 27 is moved forward along the conveying track in a transverse direction, and when the pushing surface of the pushing block 25 contacts the corrugated cardboard 101, the pushing block 25 pushes a single corrugated cardboard 101 at the lowermost layer of the pile along the clamping plate 24. After the corrugated board 101 passes through the gap between the stop block 21 and the cross beam 29 and moves onto the conveying device 3, the connecting rod 27 is made to transversely move backwards along the conveying track, after the arc surface of the pushing block 25 contacts the corrugated board 101 at the lowest layer of the pile, the pushing block 25 jacks up the corrugated board 101 and continues to move backwards until the corrugated board 101 moves to the initial position, and the feeding process of a single corrugated board 101 is completed.

The conveying device 3 is used for receiving the paper board conveyed by the paper feeding device 2, then conveying the paper board to the creasing device 5, and turning the corrugated paper board 101 by 180 degrees in the conveying process. Referring to fig. 1 and 7, the conveying device 3 includes a first paper supply belt 22, a conveying roller 1, a plurality of guide wheels 31, and a plurality of conveying belts 33.

The first paper supply 22 is located downstream of the cross member 29 and extends in the transverse direction to receive the corrugated cardboard sheet 101 after it has been removed from the cross member 29.

The conveying roller 1 is located below the cross beam 29 and downstream of the first paper supply belt 22, and the conveying roller 1 extends axially along the longitudinal direction, is in transmission connection with a driving mechanism and is driven by the driving mechanism to rotate.

The guide wheels 31 are positioned outside the conveying roller 1, are distributed in a staggered manner in the height direction and are distributed at intervals in the longitudinal direction, the guide wheels 31 positioned at different height positions are in transmission connection through a conveying belt 33, and the conveying belt 33 is an annular belt and can rotate through the guide wheels 31. The conveyer belt 33 has a clamping portion (in dynamic change) matched with the shape of the conveyer roller 1, and a gap is formed between the clamping portion and the conveyer roller 1, so as to clamp and drive the corrugated board 101 to move along the curved surface of the conveyer roller 1. A paperboard inlet 102 and a paperboard outlet 103 are also formed between the conveyer belt 33 and the conveyer roller 1 in a matching manner, the paperboard inlet 102 is positioned at the top of the conveyer roller 1, and the paperboard outlet 103 is positioned at the bottom of the conveyer roller 1; the corrugated cardboard 101 leaving the paper feeder 2 enters the gap between the conveyor belt 33 and the conveying roller 1 through the cardboard inlet 102, and completely leaves the conveying roller 1 after passing through the cardboard outlet 103. Hereinafter, the operation of the conveying device 3 for conveying the corrugated cardboard sheet 101 will be described.

After the cardboard is pushed out by the pushing block 25, the cardboard first breaks away from the beam 29 and moves onto the first paper supply belt 22, is conveyed by the first paper supply belt 22 towards the cardboard inlet 102, is clamped by the plurality of conveyor belts 33 and the conveyor rollers 1 when passing through the cardboard inlet 102, moves downwards along the gap between the conveyor belts 33 and the conveyor rollers 1, is gradually turned over in the movement process, is just turned over by 180 degrees after passing through the cardboard outlet 103, and continues to move along the approximately horizontal part of the conveyor belts 33 towards the direction close to the creasing device 5.

Referring to fig. 1 and 7, the glue applicator 4 is located outside the conveying roller 1, and is used for applying glue to the corrugated cardboard 101 during the turning motion of the corrugated cardboard 101. The glue applying device 4 in the present embodiment includes a plurality of glue guns 41 and glue tanks (not illustrated).

The glue gun 41 is positioned outside the conveying belt 33 and has a preset distance with the conveying roller 1; the glue gun 41 is communicated with the glue tank and is provided with a nozzle which can be contacted with the corrugated board 101; can spout the glue in the glue jar through the nozzle, realize the even cloth glue on corrugated container board 101.

Further, conveyor 3 still includes dust removal wheel 32, and dust removal wheel 32 is located gluey rifle 41 top, and the dust removal brush is installed to the periphery wall, the dust removal brush is used for removing impurity such as the dust on corrugated container board surface before rubber coating and tectorial membrane, guarantees corrugated container board and the laminating effect of strip film or paper.

The film laminating device 8 is located below the gluing device 4, the film laminating device 8 comprises a plurality of film laminating mechanisms, and the plurality of film laminating mechanisms correspond to the plurality of glue guns 41 and are used for adhering strip-shaped films or paper to the corrugated board 101. Referring to fig. 7, the film coating mechanism in the present embodiment includes a tray 81, an upper movable arm 82, a movable wheel 83, an upper telescopic cylinder 84, a cutting blade 85, and a pressing wheel 86.

The tray 81 is rotatably connected to the frame 7, and has an axis extending in the longitudinal direction and a peripheral portion around which a strip film or paper for coating is wound.

The upper end of the upper movable arm 82 is hinged on the frame 7, and the lower end is in transmission connection with the movable end of the upper telescopic cylinder 84 and can be close to or far away from the conveying roller 1.

The movable wheel 83 is rotatably connected to the lower end of the upper movable arm 82, and the axis of the movable wheel extends along the longitudinal direction; an arc-shaped clamping plate 24 is further formed on the upper movable arm 82, and a channel for the strip-shaped film or paper to pass through is formed between the arc-shaped clamping plate 24 and the movable wheel 83 in a matching mode.

The pressing wheel 86 is located below the movable wheel 83, the pressing wheel 86 rotates on a wheel seat (not labeled), and the wheel seat is connected with the movable end of the pressing telescopic cylinder, so that the pressing wheel 86 can be close to or far away from the conveying roller 1.

The cutting knife 85 is positioned between the movable wheel 83 and the pressing wheel 86, is connected with the movable end of the cutting telescopic cylinder, and is used for cutting off strip-shaped films or paper between the movable wheel 83 and the pressing wheel 86.

Here, the operation of the glue application device 4 and the laminating device 8 for manufacturing the corrugated cardboard sheet 101 will be described.

During the corrugated cardboard 101 passes through the glue applying device 4, the nozzle of the glue gun 41 sprays glue on the corrugated cardboard 101; the upper telescopic cylinder 84 drives the upper movable arm 82 to move towards the direction close to the conveying roller 1, so that the strip-shaped films or paper on the outer sides of the arc-shaped clamping plate 24 and the movable wheel 83 are in contact with glue on the corrugated board 101, and the strip-shaped films or paper can be driven by the corrugated board 101 to move downwards; the gap between the pinch roller 86 and the conveying roller 1 is adjusted by the pinch cylinder, so that the pinch roller 86 presses the strip-shaped film or paper on the corrugated board 101. After the corrugated board 101 is covered by the strip-shaped film or paper with a preset length, the conveying roller 1 and the conveying belt 33 stop moving, the upper telescopic cylinder 84 drives the upper movable arm 82 to reset, the strip-shaped film or paper is tightened between the movable wheel 83 and the pressing wheel 86, the strip-shaped film or paper between the pressing wheel 86 and the movable wheel 83 is cut off by the cutting telescopic cylinder, and then the pressing wheel 86 is reset, and the conveying roller 1 and the conveying belt move again; after the corrugated board 101 with the film coated passes through the board outlet 103 between the conveying roller 1 and the conveying belt 33, the strip-shaped film or paper is just positioned on the lower surface of the corrugated board 101 and is conveyed by the conveying belt 33 towards the direction close to the creasing device 5.

Referring again to fig. 7, the creasing device 5 is used for creasing the corrugated cardboard 101 which is separated from the conveying roller 1, and a creasing line is processed on the upper surface, i.e. the creasing surface, of the corrugated cardboard 101. The indentation device 5 comprises a plurality of indentation assemblies, the plurality of indentation assemblies correspond to the glue gun 41 and the laminating mechanism one by one, and the indentation assemblies comprise indentation wheels 52, lower movable arms 53, indentation wheel shafts and pressure-bearing wheels 55.

The pressure bearing wheel 55 is rotatably connected to the frame 7 and located between two adjacent conveyor belts 33, the highest point of the top of the pressure bearing wheel is located below the upper surfaces of the conveyor belts 33 at the paperboard outlet 103, and a predetermined distance is formed between the two conveyor belts, and the predetermined distance is equivalent to the thickness of a strip-shaped film or paper. The pressure wheel 55 in this embodiment is used to match the creasing wheel 52 for creasing the corrugated cardboard.

One end of the lower movable arm 53 is hinged to the frame 7, the other end of the lower movable arm is in transmission connection with the movable end of the lower telescopic cylinder 51, and the lower telescopic cylinder 51 drives the lower movable arm to be close to or far away from the pressure bearing wheel 55; the indentation wheel shaft is rotationally connected to the lower movable arm 53, the axis of the indentation wheel shaft extends along the longitudinal direction, and the indentation wheel shaft is driven to rotate by an indentation motor; a plurality of creasing wheels 52 are mounted on the creasing-wheel axle at intervals and above the pressure-bearing wheel 55.

Controlling the expansion amount of the movable end of the lower expansion cylinder 51 according to the thickness of the corrugated board 101 so as to adjust the distance between the creasing wheel 52 and the pressure-bearing wheel 55; the creasing wheel 52 is driven to rotate by a creasing motor, the creasing wheel 52 is matched with the pressure-bearing wheel 55, and a section of continuous creasing line is processed on the corrugated board 101.

The corrugated cardboard 101 leaving the creasing device 5 will continue to move a distance along the conveyor belt 33 and will eventually be thrown onto the stacking table 6 where it is stacked into a pile.

The indentation equipment in this embodiment firstly pastes strip-shaped films or paper on one surface of the corrugated board 101 through the gluing device 4 and the film laminating device 8, and then processes indentations on the other surface of the corrugated board 101 through the indentation device 5.

According to the invention, the conveyer belt 33 and the conveyer roller 1 are matched to convey the corrugated board 101, and the corrugated board 101 is turned over by 180 degrees compared with the original state in the conveying process, so that on one hand, the phenomenon that the corrugated board 101 is warped and deformed due to long-time stacking can be avoided, and the quality of the corrugated board 101 is ensured; on the other hand, the glue spreading and film covering processing can be respectively carried out on the corresponding positions of the corrugated board through the glue spreading device and the film covering device in the conveying process, the procedure connection is smooth, and the processing efficiency is high; on the other hand, before the indentation device 5 acts on the corrugated board 101, the conveyer belt 33 and the conveying roller 1 can also play a role in motion guiding for the corrugated board 101, so that the paperboard is prevented from tilting or deviating in the indentation process, and the indentation processing effect is ensured.

Example 2

Fig. 2 is a schematic structural diagram of a paperboard creasing apparatus according to a modification, and the paperboard creasing apparatus shown in fig. 2 is suitable for creasing paperboards of different thicknesses. The difference from embodiment 1 is that the paperboard creasing apparatus in this embodiment adjusts the conveying device 3, and the structures of the paper feeding device 2, the glue applying device 4, the film covering device 8 and the creasing device 5 are identical to those in embodiment 1, and will not be described here for the sake of brevity.

The conveying device 3 in this embodiment further includes a second paper supply belt 23, and a position adjusting mechanism for adjusting the height position of the second paper supply belt 23.

A second paper supply 23 is located between the first paper supply 22 and the transport cylinder 1, and is adjustable in height for receiving the corrugated cardboard sheet 101 that has been removed from the first paper supply 22.

Referring to fig. 6, the position adjusting mechanism in this embodiment adjusts the position of the second paper supply belt 23 in height by using a rack and pinion mechanism, and adjusts the height of the second paper supply belt 23 by using the position adjusting mechanism according to the thickness of the corrugated cardboard 101, so that the corrugated cardboard 101 can be horizontally guided into the cardboard entrance 102 formed between the conveying belt 33 and the conveying roller 1.

The position adjusting mechanism comprises a lifting driving motor 234, a support 231, a telescopic support 232 and a gear rack mechanism, wherein the support 231 is installed on the telescopic support 232, a plurality of rotating rollers distributed along the transverse interval are connected to the support 231 in a rotating mode, the rotating rollers are connected with a paper tape 23 in a rotating mode through a second paper tape, the second paper tape 23 is connected with an annular tape, and the second paper tape is rotated through the rotating rollers.

The rack and pinion mechanism comprises a fixed part 237, a movable part 238, a gear 233, a rack 235 and a lifting drive motor 234; the fixing part 237 is arranged on the frame 7, and the middle part is provided with a shaft hole in a penetrating way; one end of the movable part 238 is fixedly connected to the support 231, the other end of the movable part passes through the fixing part 237 through the shaft hole, and a spring 239 is further arranged between the fixing part 237 and the movable part 238; the rack 235 can be connected to the frame 7 in a vertically sliding manner and is fixedly connected to the movable portion 238 through a connecting member 236, the gear 233 is rotatably connected to the frame 7 and is in meshing transmission with the rack 235, and the lifting driving motor 234 is in driving connection with the gear 233 and is used for driving the gear 233 to rotate.

The position adjusting mechanism drives the gear 233 to rotate by the lifting driving motor 234, the gear 233 rotates to drive the rack 235 to move in the height direction, and the moving direction of the rack 235 can be switched by changing the rotating direction of the gear 233, so that the rack 235 moves upward or downward. The rotation of the gear 233 is controlled by the lifting drive motor 234, so that the support 231 connected to the rack 235 can be adjusted, and thus the distance between the first paper supply strip 22 and the second paper supply strip 23 can be adjusted, so that the corrugated cardboard 101 can horizontally pass through the cardboard inlet 102 and enter the gap between the conveyor belt 33 and the conveyor roller 1.

Of course, the position adjusting mechanism may also adjust the position of the second paper feeding belt 23 in height through a transmission mechanism such as a worm gear and a ball screw, which are not illustrated in the present specification, but are designed to horizontally guide the corrugated cardboard sheet 101 into the cardboard inlet 102 formed between the conveying belt 33 and the conveying roller 1. The worm and gear mechanism and the ball screw mechanism are both transmission structures, and specifically both comprise a fixed part 237 and a movable part 238, the structures of the fixed part 237 and the movable part 238 are completely the same as those of a gear rack, and are not described herein again, but the difference is that the worm and gear mechanism adopts a rotating worm wheel to drive the movable part 238 to move upwards or downwards, so that the support 231 connected with the movable part 238 can be adjusted; the ball screw mechanism uses a screw nut for lifting to drive the movable portion 238 to move, so that the support 231 connected with the movable portion 238 can be adjusted.

Before the first corrugated cardboard sheet 101 enters the gap between the conveyor belt 33 and the conveyor roller 1 through the cardboard inlet 102, the gap between the conveyor belt 33 and the conveyor roller 1 needs to be adjusted according to the thickness of the corrugated cardboard sheet 101. In this embodiment, the gap between the conveyor belt 33 and the conveyor roller 1 is adjusted by changing the size of the conveyor roller 1, and the structure of the conveyor roller 1 in this embodiment will be described.

Referring to fig. 3, the transfer roller 1 includes a roller shaft 11, an air inlet nozzle 12, a sleeve 13, an elastic tube 15, and two sealing covers 16.

The roller shaft 11 has an air intake passage 111 open at one end, the air intake passage 111 extending in the longitudinal direction, the air intake passage 111 communicating with the intake nozzle 12.

The sleeve 13 is sleeved on the periphery of the roller shaft 11 and is of a hollow tubular structure, an air flow channel is arranged inside the sleeve 13, and the air flow channel is communicated with an air inlet channel 111 of the roller shaft 11 through a hollow connecting pipe 131; the outer peripheral walls of both ends of the sleeve 13 extend outward to form second annular shoulders 133.

The sleeve 13 periphery is located to the elastic tube 15 cover, is hollow tubular structure, the internal perisporium at elastic tube 15 both ends all outwards extends and forms first annular groove, the periphery wall at elastic tube 15 both ends all inwards extends and forms second annular groove.

The two sealing covers 16 are respectively sleeved on the second annular grooves of the elastic tube 15, the sealing covers 16 are of a cylindrical structure with one end open, the middle part of each sealing cover is penetratingly provided with a shaft hole for the roller shaft 11 to pass through, a sealing cavity is formed among the sealing covers 16, the elastic tube 15 and the sleeve 13, and a sealing block 14 is hermetically accommodated in the sealing cavity; the sleeve 13 and the elastic tube 15 are matched to form an air chamber 132, an air outlet 1321 communicated with the air chamber 132 and the air flow channel is formed in the outer peripheral wall of the sleeve 13, and the air outlet 1321 is located between the two second annular shoulders 133;

the sealing block 14 is of a hollow tubular structure, a first annular shoulder 141 is formed outwards on the outer peripheral wall of the sealing block 14, and the first annular shoulder 141 is arranged in a first annular groove; the sealing cover 16, the sealing block 14 and the second annular shoulder 133 are positioned by a locking bolt 141, specifically, a threaded hole is formed in the second annular shoulder 133, the threaded hole does not penetrate through the second annular shoulder 133, and one end of the locking bolt 141 enters the threaded hole of the second annular shoulder 133 through the sealing cover 16 and the sealing block 14 in sequence.

Next, the adjustment of the size of the transport cylinder 1 will be explained.

Air is blown into the air inlet channel 111 of the roller shaft 11 through the air inlet nozzle 12, the air sequentially passes through the air inlet channel 111, the connecting pipe 131 and the air channel to enter the sleeve 13 and the air chamber 132 of the elastic pipe 15, and the elastic pipe 15 is expanded by air pressure. The air pressure in the air chamber 132 can be adjusted according to the thickness of the corrugated board 101, so that the expansion degree of the elastic tube 15 is adjusted, the conveying roller 1 and the conveying belt 33 adapt to the corrugated boards 101 with different thicknesses, the application range of the conveying device 3 is widened, and the size of the conveying roller 1 is controlled by adopting air pressure, so that the adjustment is convenient and trouble-saving.

Through establishing sleeve 13 at roller axle 11 periphery cover, locate sleeve 13 with elastic tube 15 cover again on, compare in the mode that sleeve 13 was located to direct elastic tube 15 cover, reduced the size of the air chamber 132 that is used for adjusting elastic tube 15 expansion degree, more rapidly to the regulation of elastic tube 15 expansion degree, also can reduce the consumption to the air supply.

The cooperation of elastic tube 15 and second annular shoulder 133 has formed the first way sealed to air chamber 132, has carried out the second way through sealed piece to air chamber 132 and has sealed, has promoted the gas tightness to air chamber 132 through double seal, prevents to reveal because of the air in air chamber 132 and leads to elastic tube 15 to take place to warp, makes conveyor 3 obtain long-time stable work.

No matter how the thickness of the corrugated cardboard 101 changes, the outer surface of the corrugated cardboard 101 entering the gap between the conveyer belt 33 and the conveyer roller 1 through the cardboard inlet 102 is always in contact with the conveyer belt 33, so that the structure and the control mode of the gluing device 4 and the film covering device 8 do not need to be adjusted at all, and the control is simpler.

According to the thickness of the corrugated board 101, the gap between the creasing wheel 52 and the pressure-bearing wheel 55 is controlled by adjusting the expansion amount of the movable end of the lower telescopic cylinder 51 of the creasing device 5, so as to machine the crease with the preset depth on the corrugated board 101.

Referring to fig. 9, the creasing method of the paperboard creasing device of the present embodiment includes the following steps:

s1, paperboard feeding: the corrugated cardboard is conveyed one by one at a constant speed.

S11, enabling the connecting rod to move forwards in a transverse direction along the conveying track, and when the pushing surface of the pushing block is in contact with the corrugated boards, pushing the single corrugated boards at the lowest layer of the stock pile forwards along the clamping plate by the pushing block.

S12, enabling the corrugated board to pass through a gap between the stop block and the cross beam, moving the first paper supply belt backwards, enabling the connecting rod to transversely move backwards along the conveying track, and after the arc surface of the pushing block is contacted with the corrugated board at the lowest layer of the stock pile, jacking the corrugated board by the pushing block and continuing to move backwards until the corrugated board moves to the initial position.

S2, conveying paper boards: the paper is turned from top to bottom, glue spreading and film covering are sequentially carried out on the film covering surface of the corrugated board in the turning process, the corrugated board is finally turned over for 180 degrees, and the film covering surface is turned upwards to be the indentation surface upwards (the film covering surface of the corrugated board is upwards before the corrugated board enters the inlet of the paper board, and the indentation surface is upwards when the corrugated board passes through the outlet of the paper board).

S21, conveying the corrugated board to a paperboard inlet through a first paper supply tape, clamping the corrugated board by a plurality of conveying belts and conveying rollers when the corrugated board passes through the paperboard inlet, moving downwards along gaps between the conveying belts and the conveying rollers, and gradually turning over in the moving process.

S22, when the corrugated board passes through the glue gun, a nozzle of the glue gun sprays glue on the corrugated board, the upper telescopic cylinder drives the upper movable arm to move towards the direction close to the conveying roller, so that the arc-shaped clamping plate and the strip-shaped thin film or paper on the outer side of the movable wheel are in contact with the glue on the corrugated board, the film coating is realized, and the corrugated board drives the strip-shaped thin film or paper to move downwards.

S23, adjusting a gap between a pressing wheel and a conveying roller through a pressing cylinder to enable the pressing wheel to press the strip-shaped film or paper on the corrugated board; after the strip film or paper is covered on the corrugated board by a preset length, the conveying roller and the conveying belt stop moving, the upper telescopic cylinder drives the upper movable arm to reset, so that the strip film or paper is tightened between the movable wheel and the pressing wheel, the cutting telescopic cylinder cuts off the strip film or paper between the pressing wheel and the movable wheel, and then the pressing wheel resets, and the conveying roller and the conveying belt move again.

S24, after the corrugated board with the film coated passes through the paper board outlet, the coated film surface of the corrugated board faces downwards, the indentation surface faces upwards, and the corrugated board is conveyed towards the direction close to the indentation device by the conveying belt.

S3, paperboard indentation: continuous indentation lines are processed on the indentation surface of the corrugated board.

The creasing wheel is driven to rotate by the creasing motor, and acts on the corrugated board on the conveying belt in the rotating process, so that a section of continuous creasing line is formed on the corrugated board.

S4, paperboard stacking: the corrugated board moves for a certain distance along the conveying belt after being separated from the indentation device, and is finally thrown onto the stacking platform and stacked into a material stack on the stacking platform.

Although the present invention has been described in detail with reference to examples, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention.

Claims

1. A method for creasing corrugated cardboard, comprising the steps of:

2. The method for creasing a corrugated cardboard according to claim 1, wherein the step S1 comprises:

s11, bearing the paperboards stacked into a stock pile through a cross beam, and pushing the corrugated boards on the lowest layer of the stock pile out of the cross beam along the transverse direction through a pushing block;

3. The method for creasing a corrugated cardboard as claimed in claim 1, wherein the step S2 comprises:

s21, enabling the corrugated board to horizontally enter a paper board inlet formed by a conveying belt and a conveying roller;

s22, after entering a paperboard inlet, clamping the paperboard by a conveyer belt and a conveying roller, attaching the paperboard to a curved surface of the conveying roller, and turning the paperboard downwards from top to bottom;

s23, in the process that the paperboard is turned downwards, glue is distributed on the film covering surface of the corrugated paperboard through a glue distributing device, and strip-shaped films or paper are pasted on the film covering surface of the corrugated paperboard through the film covering device;

4. The creasing method of a corrugated cardboard of claim 3, wherein in S23, the corrugated cardboard is dedusted by a dedusting wheel before the gluing device applies glue to the film-coating surface of the corrugated cardboard.

5. The creasing equipment for the corrugated boards is characterized by comprising a rack, a paper feeding device, a conveying device, a gluing device, a film covering device and a creasing device, wherein the paper feeding device, the conveying device, the gluing device, the film covering device and the creasing device are arranged on the rack; the paper feeding device is arranged at the top of the frame and is used for feeding out the corrugated boards one by one and feeding the corrugated boards to the conveying device at a constant conveying speed; the conveying device is used for receiving the paper boards conveyed by the paper feeding device, conveying the paper boards to the impressing device and turning the corrugated paper boards 180 degrees in the conveying process; the glue coating device is positioned at the outer side of the conveying roller and used for coating glue on the corrugated board in the turning motion process of the corrugated board; the film laminating device is positioned below the gluing device and comprises a plurality of film laminating mechanisms, and the plurality of film laminating mechanisms correspond to the plurality of glue guns and are used for adhering strip-shaped films or paper on the corrugated board; the indentation device is arranged at the bottom of the rack and is used for processing indentation lines on the indentation surface of the corrugated board.

6. The apparatus for creasing a corrugated cardboard as claimed in claim 5, wherein said feeding means comprises a plurality of beams carrying the corrugated cardboard in the form of a pile and a plurality of pushing blocks for pushing out the corrugated cardboard sheet by sheet from the lower layer of the pile; the transverse beams extend along the transverse direction, a plurality of transverse beams are distributed at intervals in the longitudinal direction, a fixed block is arranged on one side of each transverse beam, and the stacked corrugated boards are abutted against one side face of the fixed block; the other side of the cross beam is provided with a clamping plate, the clamping plate extends along the transverse direction, part of the clamping plate is positioned above the cross beam, and a space for accommodating a corrugated board pile is formed between two adjacent clamping plates and the cross beam in a matched manner; the stop block is arranged on the clamping plate and is positioned on the inner side of the clamping plate, and a gap is formed between the stop block and the cross beam, and only one corrugated board can pass through the gap.

7. The creasing device of a corrugated cardboard of claim 6, wherein the pushing block is located between two mutually cooperating cross beams, the pushing block being connected by a connecting rod, the connecting rod being capable of lateral movement along a conveying track, the conveying track extending in a lateral direction and being fixedly mounted at the bottom of the cross beams; the propelling movement piece has a propelling movement face and an arc surface, propelling movement face and arc surface all are located the crossbeam top, the propelling movement face is located the front end of propelling movement piece, for the plane that can contact with corrugated container board, the arc surface is located the rear end of propelling movement piece.

8. A creasing device of corrugated cardboard according to claim 5, wherein said conveying means comprise a first paper supply belt, a conveying roller, a plurality of guide wheels and a plurality of conveyor belts; the first paper feeding belt is positioned at the downstream of the paper feeding device, extends along the transverse direction and can receive the corrugated board separated from the cross beam; the conveying roller is positioned at the downstream of the first paper supply belt, extends axially along the longitudinal direction, is in transmission connection with the driving mechanism and is driven by the driving mechanism to rotate; the guide wheels are positioned on the outer side of the conveying roller, are distributed in a staggered manner in the height direction and are distributed at intervals in the longitudinal direction, and the guide wheels positioned at different height positions are in transmission connection through a conveying belt; a gap for clamping the corrugated board is formed between the conveying belt and the conveying roller, a paperboard inlet and a paperboard outlet are formed in a matched mode, the paperboard inlet is located at the top of the conveying roller, and the paperboard outlet is located at the bottom of the conveying roller.

9. The creasing apparatus of a corrugated cardboard of claim 8, wherein said laminating device is located below said gluing device, said laminating device comprising a plurality of laminating mechanisms, said laminating mechanisms comprising a tray, an upper movable arm, a movable wheel; an upper telescopic cylinder, a cutting-off tool and a pinch roller; the material tray is rotationally connected to the rack, and strip-shaped films or paper used for film covering are wound on the periphery of the material tray; the upper end of the upper movable arm is hinged on the rack, and the lower end of the upper movable arm can be close to or far away from the conveying roller; the movable wheel is rotatably connected to the lower end of the upper movable arm, an arc-shaped clamping plate is further formed on the upper movable arm, and a channel for a strip-shaped film or paper to pass through is formed between the arc-shaped clamping plate and the movable wheel in a matched mode; the pressing wheel is positioned below the movable wheel and can be close to or far away from the conveying roller; the cutting-off knife is positioned between the movable wheel and the pressing wheel and is used for cutting off the strip-shaped film or paper between the movable wheel and the pressing wheel.

10. The creasing apparatus of a corrugated cardboard of claim 7 wherein the conveying means further comprises a dusting wheel located above the glue gun, the peripheral wall being fitted with a dusting brush capable of contacting the film-coating surface of the corrugated cardboard.