CN112757690B - Film laminating method for reducing paperboard warping - Google Patents

Film laminating method for reducing paperboard warping Download PDF

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Publication number
CN112757690B
CN112757690B CN202011634374.0A CN202011634374A CN112757690B CN 112757690 B CN112757690 B CN 112757690B CN 202011634374 A CN202011634374 A CN 202011634374A CN 112757690 B CN112757690 B CN 112757690B
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China
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conveying
carton board
carton
roller
fixedly connected
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CN202011634374.0A
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Chinese (zh)
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CN112757690A (en
Inventor
孙肇恩
孙鹏恩
于强
赵广忠
崔存房
丁状
黄龙昌
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Jinan Chencai Packaging Printing Co ltd
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Jinan Chencai Packaging Printing Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02Feeding or positioning sheets, blanks or webs
    • B31B50/04Feeding sheets or blanks
    • B31B50/042Feeding sheets or blanks using rolls, belts or chains
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006Controlling; Regulating; Measuring; Improving safety
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20Cutting sheets or blanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60Uniting opposed surfaces or edges; Taping
    • B31B50/62Uniting opposed surfaces or edges; Taping by adhesives
    • B31B50/624Applying glue on blanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74Auxiliary operations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74Auxiliary operations
    • B31B50/741Moistening; Drying; Cooling; Heating; Sterilizing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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Abstract

The application relates to the technical field of carton production, and discloses a film laminating method for reducing paperboard warpage, which mainly comprises the following steps of S1: feeding: placing the stacked carton boards on a conveying device one by using a feeding device; step S2: conveying: conveying the carton board into a hot-pressing film laminating machine by using a conveying device, and preheating the carton board by using the conveying device in the conveying process; and step S3: coating a film; adhering the carton board and the plastic film by using a hot-pressing film laminating machine and heating the carton board and the plastic film; and step S4: shaping: further heating the carton board and the plastic film which are adhered together by using a lamplight heating machine; step S5: slitting: and (4) cutting the plastic film by using a cutting device, and cutting the material film between two adjacent carton boards to finish film covering. This application has the effect that reduces warpage among the carton board tectorial membrane course of working.

Description

Film laminating method for reducing warping of paperboard
Technical Field
The application relates to the field of carton production, in particular to a film laminating method for reducing paperboard warping.
Background
The box is a most widely used packaging product, and has various specifications and models according to different materials, such as corrugated cartons, single-layer cartons and the like. The paper box is commonly used for three layers and five layers, seven layers are less in use, each layer is divided into inner paper, core paper and surface paper, the inner paper and the surface paper comprise tea board paper and kraft paper, the corrugated paper for the core paper has different colors and handfeel, and the paper produced by different manufacturers is different.
The film covering is a main technology of post-printing processing, and is that the plastic film coated with adhesive is heated and pressed together with paper printed matter to form a paper-plastic integrated product.
In the production process of the carton, a laminating machine is generally used for covering a layer of plastic film on the outer side of the carton board, so that the waterproof performance of the carton is improved, the patterns on the carton board are protected, and the service life of the patterns on the carton board is prolonged.
At present, chinese utility model patent of bulletin number CN209022444U discloses a two-sided laminating machine, change mouthful, second hutch, feeding conveyor, control panel, upper film import, upper film roller frame, unpowered roller group, conveyer motor, driving belt, lower membrane roller, lower roll axle, upper film roller, upper roll axle, spring frame including laminating machine organism, first hutch, access hole, lower membrane roller, set up first hutch, laminating machine organism side rear, set up access hole and lower membrane roller and change mouthful laminating machine organism side middle, and lower membrane roller changes mouthful and lower membrane roller passes through the hub connection.
In view of the above-mentioned related technologies, the inventor believes that after the plastic film and the carton board are bonded by glue during the laminating process of the carton board, the carton board may be stretched due to the absorption of water in the glue, which causes the carton board to warp, and thus the carton board has a defect that the quality of the carton is affected due to the warp of the carton board.
Disclosure of Invention
In order to reduce the influence of the warping of the carton board on the quality of the carton, the application provides a film laminating method for reducing the warping of the carton board.
The application provides a tectorial membrane method for reducing cardboard warpage, adopts following technical scheme:
a laminating method for reducing warping of a paperboard mainly comprises the following steps: step S1: feeding: placing the stacked carton boards on a conveying device one by using a feeding device; step S2: conveying: conveying the carton board into a hot-pressing film laminating machine by using a conveying device, and preheating the carton board by using the conveying device in the conveying process; and step S3: coating a film; adhering the carton board and the plastic film by using a hot-pressing film laminating machine and heating the carton board and the plastic film; and step S4: shaping: further heating the carton board and the plastic film which are adhered together by using a lamplight heating machine; step S5: slitting: and (4) cutting the plastic film by using a cutting device, and cutting the plastic film between two adjacent carton boards to finish film covering.
Through adopting above-mentioned technical scheme, in carton board transportation process, utilize conveyor to preheat the carton board that has not laminated yet, reduce the moisture in the carton board, reduce the possibility that carton board warp to through the roll-in, improve the planarization of carton board. Utilize the second warming mill to carry out the pressfitting with plastic film and carton board at the tectorial membrane in-process, make the smooth surface of laying at the carton board of plastic film, the carton board passes through glue and plastic film laminating together, utilizes the second warming mill to further heat the carton board, reduces the carton board because of absorbing the possibility that the moisture of glue warp to accelerate the speed that glue solidifies, improve the stability that carton board and plastic film are connected. After the plastic film is attached to the carton board, the plastic film is conveyed into the lamplight heating machine to be heated again, and the stability of connection of the plastic film and the carton board is further improved.
Optionally, the conveying device in step S1 includes two conveying beams arranged oppositely, two rotating rollers and a first motor, the conveying beams are arranged horizontally, the two rotating rollers are vertically and rotatably connected between the two conveying beams, the two rotating rollers are arranged horizontally, one of the rotating rollers is located at one end of the conveying beam close to the hot-pressing film covering machine, the other rotating roller is located at one end of the conveying beam close to the hot-pressing film covering machine body, the first motor is fixedly connected to one side of one of the conveying beams far from the other conveying beam, a main shaft of the first motor is coaxially and fixedly connected with one rotating roller close to the hot-pressing film covering machine body, and the two rotating rollers are connected through a belt in a transmission manner; two be provided with the backing roll between the live-rollers, the backing roll is perpendicular to rotate and is connected between two delivery beam, the axis of rotation of backing roll is parallel with the axis of rotation of live-rollers, the axis of rotation of backing roll is located the plane top at the axis of rotation place of two live-rollers, the belt cover is established on the backing roll, the backing roll top is provided with first warming mill, the surface temperature of first warming mill is between 40 degrees centigrade to 60 degrees centigrade.
Through adopting above-mentioned technical scheme, first motor drive live-rollers rotates, and two live-rollers pass through belt transmission and connect, and the belt removes under the drive of live-rollers, carries the carton board to the direction that is close to hot pressing laminating machine organism. The supporting roller is arranged between the two rotating rollers, and the moving path of the belt is changed by the supporting roller, so that the two partially overlapped carton boards are separated when passing over the supporting roller, the possibility of overlapping when the carton boards enter the hot-pressing film covering machine body is reduced, and the film covering quality of the film covering machine is improved. When the carton board moves to the supporting roll, the carton board is rolled through the matching of the first heating roller and the supporting roll, and the carton board is preheated by the first heating roller, so that the moisture in the carton board is reduced, the possibility of deformation of the carton board is reduced, and the smoothness of the carton board before film coating is improved.
Optionally, first warming mill includes roll body, bracing piece, heater strip and two connecting blocks, the roll body is connected with the coaxial rotation of bracing piece, heater strip fixed connection is on the bracing piece, two the connecting block is fixed connection respectively at the both ends of bracing piece length direction, two the equal fixedly connected with backup pad in transport beam top, two the spout has all been seted up on the relative lateral wall of backup pad, two the connecting block is sliding connection respectively in two spouts, the connecting block is close to the one end elastic connection who carries the crossbeam through spring and spout, backup pad top threaded connection has the bolt that is used for restricting the connecting block gliding.
Through adopting above-mentioned technical scheme, connecting rod length direction both ends respectively with two connecting block fixed connection, two connecting blocks are sliding connection respectively in two spouts, make the relative belt's of connecting rod distance adjustable to make the distance between backing roll and the first warming mill adjust according to the thickness of carton board, improve conveyor's suitability. The bottom of the sliding block is elastically connected with one end, close to the conveying beam, of the sliding groove through a spring, the distance between the first heating roller and the supporting roller is controlled through a bolt, and the adjustment is convenient.
Optionally, the feeding device in step S1 includes a reciprocating screw, a second motor, a guide rod, a connecting rod, a negative pressure fan, a three-way electromagnetic valve, and two negative pressure suction cups for adsorbing the carton board, the reciprocating screw is horizontally disposed, and the length direction of the reciprocating screw is parallel to the length direction of the conveying beam, the reciprocating screw is rotatably connected above one of the conveying beams, the main shaft of the second motor is coaxially and fixedly connected with the reciprocating screw, the second motor is fixedly connected with the conveying beam, and the rotating roller away from the hot-pressing laminator body is located at the middle position of the length direction of the reciprocating screw, the guide rod is fixedly connected to the other conveying beam, the guide rod is arranged opposite to the reciprocating screw, the guide rod is slidably connected with a sliding block, the two-way screw is in threaded connection with a nut, the connecting rod is fixedly connected between the nut and the sliding block, and the connecting rod is perpendicular to the conveying direction of the conveying device, the two negative pressure suction cups are respectively and fixedly connected at positions close to two ends of the length direction of the connecting rod, a first end of the three-way electromagnetic valve is communicated with the air inlet end of the negative pressure suction cup, a second end of the three-way electromagnetic valve is communicated with the atmosphere.
Through adopting above-mentioned technical scheme, the reciprocal lead screw of second motor drive rotates, and the nut reciprocating motion along the length direction of two-way lead screw in the reciprocal lead screw rotation process to drive the connecting rod at the direction of delivery reciprocating motion of material. The negative pressure fan is communicated with the two negative pressure suckers through the three-way electromagnetic valve, the two negative pressure suckers reciprocate along the conveying direction under the driving of the connecting rod, when the negative pressure suckers move to the upper part of the article placing mechanism, the negative pressure suckers are communicated with the negative pressure fan to enable the negative pressure suckers to be adsorbed on the carton board on the uppermost layer, the negative pressure suckers drive the carton board to move to the feeding end of the conveying device, when the negative pressure suckers move to the upper part of the belt, the negative pressure suckers are communicated with the external atmosphere, and the negative pressure suckers are separated from the carton board to complete feeding.
Optionally, the feeder is still including putting the thing mechanism, puts the thing mechanism and includes support base, bearing board and lifting unit, the bearing board level sets up, the bearing board passes through lifting unit and is connected with the support base, the bearing board is located between two transport beam, the bearing board is located the connecting rod below.
By adopting the technical scheme, the lifting assembly is arranged between the bearing plate and the supporting base, the distance between the bearing plate and the supporting base is adjustable, the lifting assembly pushes the bearing plate to move towards the direction far away from the supporting base in the feeding process of the feeding mechanism, so that the distance between the uppermost layer carton board and the negative pressure sucker in the vertical direction is kept unchanged, and the working stability of the feeding mechanism is improved.
Optionally, the lifting assembly comprises an electric push rod, the fixed end of the electric push rod is fixedly connected with the supporting base in a vertical mode, and the telescopic end of the electric push rod is fixedly connected with the supporting plate in a vertical mode.
Through adopting above-mentioned technical scheme, utilize electric putter to remove the bearing board, electric putter's flexible stability, flexible distance control is convenient, improves the stability of putting thing mechanism.
Optionally, the limiting rods vertically arranged are arranged at four corners of the bearing plate in a penetrating manner, the limiting rods are connected with the bearing plate in a sliding manner, and the four limiting rods are fixedly connected with the supporting base in a perpendicular manner.
Through adopting above-mentioned technical scheme, all wear to establish the gag lever post of vertical setting in the position in bearing board four corners, gag lever post and bearing board sliding connection utilize the gag lever post to lead to the removal of bearing board, reduce the bending stress that electric putter's flexible end received in the course of the work, improve electric putter's life.
Optionally, the hot-pressing film covering machine in step S3 includes a conveying roller, a second heating roller is disposed above the conveying roller, the second heating roller is fixedly connected to a machine body of the hot-pressing film covering machine, the conveying roller is rotatably connected to the machine body of the hot-pressing film covering machine, a rotation axis of the conveying roller and a rotation axis of the second heating roller are located on the same vertical plane, and a temperature of a surface of the second heating roller is 70 ℃ to 90 ℃.
Through adopting above-mentioned technical scheme, utilize the second warming mill of fixed connection on hot pressing laminating machine organism to be in the same place plastic film and carton board pressfitting. The surface temperature of the second heating roller is heated to 70 ℃ to 90 ℃, the second heating roller is used for heating the carton board in one step, the possibility that the carton board deforms due to the fact that moisture in glue is absorbed is reduced, the glue solidification speed is accelerated, and the stability of connection between the carton board and the plastic film is improved.
Optionally, the light heating machine in step S4 includes the organism, the one end at organism top articulates there is the aircraft bonnet, the aircraft bonnet is close to many heating fluorescent tubes of one side fixedly connected with of organism, the heating fluorescent tube is near infrared lamp, utilizes near infrared lamp to heat the carton board to 100 degrees centigrade to 120 degrees centigrade.
By adopting the technical scheme, the paper box board which is conveyed to the space between the hood and the machine body and is covered with the plastic film is further heated by the heating lamp tube, the temperature of the surface of the paper box board is heated to be between 100 ℃ and 120 ℃, and the adhesion stability between the paper box board and the plastic film is further improved under the condition that the surface of the paper box board is provided with ink.
Optionally, a temperature sensor is arranged on the machine body, and a detection end of the temperature sensor is abutted against one side of the carton board close to the near-infrared lamp.
Through adopting above-mentioned technical scheme, set up temperature sensor on the organism, utilize temperature sensor to detect the temperature on carton board surface, be convenient for adjust near infrared lamp.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through in carton board transportation process, utilize conveyor to preheat the carton board that has not yet laminated, reduce the moisture in the carton board, reduce the possibility that the carton board warp to through the roll-in, improve the planarization of carton board. The second heating roller is utilized to press the plastic film and the carton board in the film laminating process, so that the plastic film is flatly laid on the surface of the carton board, the carton board is adhered to the plastic film through glue, the carton board is further heated by the second heating roller, the possibility that the carton board is deformed due to the fact that the carton board absorbs water in the glue is reduced, the glue solidification speed is accelerated, and the connection stability of the carton board and the plastic film is improved;
2. the two ends of the connecting rod in the length direction are respectively and fixedly connected with the two connecting blocks, and the two connecting blocks are respectively and slidably connected into the two sliding grooves, so that the distance between the connecting rod and the belt can be adjusted, the distance between the supporting roller and the first heating roller can be adjusted according to the thickness of the carton board, and the applicability of the conveying device is improved;
3. the lifting assembly is arranged between the bearing plate and the supporting base, the distance between the bearing plate and the supporting base is adjustable, the lifting assembly pushes the bearing plate to move towards the direction far away from the supporting base in the feeding process of the feeding mechanism, the distance between the uppermost layer carton board and the negative pressure sucker in the vertical direction is kept unchanged, and the working stability of the feeding mechanism is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of a conveyor section according to an embodiment of the present application;
FIG. 3 is a schematic view of a first heated roller portion according to an embodiment of the present application;
FIG. 4 is a schematic view of the structure of a hot-press laminator section according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a lamp heater portion according to an embodiment of the present application.
Description of reference numerals: 100. a conveying device; 110. a transport beam; 120. a rotating roller; 130. a first motor; 140. a belt; 150. a support roll; 160. a limiting roller; 170. a first heating roller; 171. a roller body; 172. a support bar; 173. heating wires; 174. connecting blocks; 175. a support plate; 176. a chute; 178. a bolt; 200. a feeding device; 210. a reciprocating screw; 211. a screw nut; 220. a second motor; 230. a guide bar; 231. a slider; 240. a connecting rod; 250. a negative pressure fan; 260. a three-way electromagnetic valve; 270. a negative pressure sucker; 280. a placement mechanism; 281. a support base; 282. a lifting assembly; 283. a support plate; 284. an electric push rod; 285. a limiting rod; 300. a hot-pressing laminating machine; 310. a conveying roller; 320. a second heating roller; 400. a lamp light heater; 410. a body; 420. a hood; 430. a near infrared lamp; 440. and a temperature sensor.
Detailed Description
The present application is described in further detail below with reference to the attached figures X-X.
The embodiment of the application discloses a film laminating method for reducing paperboard warping. Referring to fig. 1, a laminating method for reducing warpage of a paperboard mainly comprises the following steps: step S1: feeding: the carton boards stacked together are placed one by one on the conveyor 100 by means of the feeding device 200. The carton boards stacked together are placed on the conveying device 100 one by the feeding device 200, and the carton boards are conveyed by the conveying device 100, so that the workload of workers is reduced. Step S2: conveying: the carton board is conveyed into the hot-pressing film coating machine 300 by the conveying device 100, and the carton board is preheated by the conveying device 100 in the conveying process. By utilizing the conveying device 100 to preheat the carton board which is not coated with the film in the carton board conveying process, the moisture in the carton board is reduced, the possibility of deformation of the carton board is reduced, and the smoothness of the carton board is improved through rolling. And step S3: coating a film; the carton board is attached to the plastic film and heated by a hot-press laminator 300. Carry out the pressfitting with plastic film and carton board through utilizing second warming mill 320 at the tectorial membrane in-process, make the smooth surface of laying at the carton board of plastic film, the carton board passes through glue and plastic film laminating together, utilizes second warming mill 320 to further heat the carton board, reduces the carton board because of absorbing the moisture in the glue and warp the possibility to accelerate the speed that glue solidifies, improve the stability that carton board and plastic film are connected. And step S4: shaping: the carton board and the plastic film, which are bonded together, are further heated by the lamp heater 400. After the plastic film and the carton board are adhered together, the plastic film and the carton board are conveyed into the lamplight heating machine 400 to be heated again, so that the connection stability of the plastic film and the carton board is further improved. Step S5: slitting: and (4) cutting the plastic film by using a cutting device, and disconnecting the plastic film between two adjacent carton boards to finish film coating. The plastic film between two adjacent carton boards is cut off through the slitting device, so that each carton board independently exists, and the carton is convenient to use in the later period.
Referring to fig. 1 and 2, in step S1, a conveying device 100 includes two conveying beams 110 disposed opposite to each other, and two horizontally disposed rotating rollers 120 are vertically and rotatably connected between the two conveying beams 110, wherein one rotating roller 120 is located at an end of the conveying beam 110 close to the hot-pressing laminator 300 body, and the other rotating roller 120 is located at an end of the conveying beam 110 close to the hot-pressing laminator 300 body 410. One side of one of the conveying beams 110, which is far away from the other conveying beam 110, is fixedly connected with a first motor 130, a main shaft of the first motor 130 is coaxially and fixedly connected with a rotating roller 120 close to the body of the hot-pressing film covering machine 300, and the two rotating rollers 120 are in transmission connection through a belt 140. The first motor 130 drives the rotating rollers 120 to rotate, the two rotating rollers 120 are in transmission connection through the belt 140, and the belt 140 is driven by the rotating rollers 120 to move so as to convey the carton board to a direction close to the body 410 of the hot-pressing laminating machine 300.
Referring to fig. 2, a supporting roller 150 is vertically and rotatably connected between the two conveying beams 110, the supporting roller 150 is located between the two rotating rollers 120, the rotating axis of the supporting roller 150 is parallel to the rotating axis of the rotating rollers 120, the rotating axis of the supporting roller 150 is located above the plane where the rotating axes of the two rotating rollers 120 are located, and the belt 140 is sleeved on the supporting roller 150. By arranging the supporting roller 150 between the two rotating rollers 120 and changing the moving path of the belt 140 by using the supporting roller 150, the two partially overlapped carton boards are separated when passing over the supporting roller 150, the possibility of overlapping when the carton boards enter the laminating machine body is reduced, and the laminating quality of the laminating machine is improved.
Referring to fig. 2 and 3, support plates 175 are fixedly connected to the upper portions of the two conveying beams 110, the two support plates 175 are arranged oppositely, a first heating roller 170 is slidably connected between the two support plates 175, and the first heating roller 170 is located above the support roller 150. First heating roller 170 includes roll body 171, bracing piece 172, heater strip 173 and two connecting blocks 174, roll body 171 is connected with bracing piece 172 coaxial rotation, heater strip 173 fixed connection is on bracing piece 172, two connecting blocks 174 fixed connection are at the both ends of bracing piece 172 length direction respectively, spout 176 has all been seted up on the lateral wall that two backup pads 175 are relative, two connecting blocks 174 are sliding connection respectively in two spouts 176, connecting block 174 is close to the one end elastic connection who carries crossbeam 110 through spring and spout 176, backup pad 175 top threaded connection has and is used for restricting the gliding bolt 178 of connecting block 174. The two ends of the connecting rod 240 in the length direction are respectively fixedly connected with the two connecting blocks 174, and the two connecting blocks 174 are respectively connected in the two sliding grooves 176 in a sliding manner, so that the distance between the connecting rod 240 and the belt 140 can be adjusted, the distance between the supporting roller 150 and the first heating roller 170 can be adjusted according to the thickness of the carton board, and the applicability of the conveying device 100 is improved. The bottom of the slider 231 is elastically connected with one end of the chute 176 close to the conveying beam 110 through a spring, and the distance between the first heating roller 170 and the supporting roller 150 is controlled by using a bolt 178, so that the adjustment is convenient.
Referring to fig. 2 and 3, the side walls of the two conveying beams 110 close to each other are rotatably connected with a limiting roller 160, the limiting roller 160 is located between the supporting roller 150 and one rotating roller 120 far away from the roller press body, the two limiting rollers 160 are coaxially arranged, the rotating axis of the limiting roller 160 is parallel to the rotating axis of the rotating roller 120, the lowest end of the limiting roller 160 abuts against the belt 140, and the lowest end of the limiting roller 160 and the highest end of the rotating roller 120 are located in the same horizontal plane. Utilize spacing roller 160 to restrict the change of belt 140 moving path, reduce belt 140 and receive backing roll 150 to influence and change the length of moving path, improve the stability that belt 140 carried to improve the efficiency that the material was carried.
Referring to fig. 2 and 3, the feeding device 200 in step S2 includes a reciprocating lead screw 210, the reciprocating lead screw 210 is rotatably connected above one of the conveying beams 110, the reciprocating lead screw 210 is horizontally disposed, and the length direction of the reciprocating lead screw 210 is parallel to the length direction of the conveying beam 110. A second motor 220 is fixedly connected to one of the conveying beams 110 fixedly connected with the reciprocating screw 210, a main shaft of the second motor 220 is coaxially and fixedly connected with the reciprocating screw 210, and a screw 211 is in threaded connection with the bidirectional screw. A guide rod 230 is fixedly connected to the other transport beam 110, the guide rod 230 is arranged opposite to the reciprocating screw rod 210, and a slide block 231 is slidably connected to the guide rod 230. A connecting rod 240 is fixedly connected between the screw 211 and the sliding block 231, and the connecting rod 240 is perpendicular to the conveying direction of the conveying device 100. The positions of the connecting rod 240 near both ends in the length direction are fixedly connected with negative pressure suckers 270. The two negative pressure suction cups 270 are both communicated with the negative pressure fan 250 through the three-way electromagnetic valve 260. The first end of the three-way electromagnetic valve 260 is communicated with the air inlet end of the negative pressure fan 250, the second end of the three-way electromagnetic valve 260 is communicated with the atmosphere, and the third end of the three-way electromagnetic valve 260 is communicated with the two negative pressure suckers 270. The second motor 220 drives the reciprocating screw 210 to rotate, and the nut 211 reciprocates along the length direction of the bidirectional screw in the rotating process of the reciprocating screw 210, so as to drive the connecting rod 240 to reciprocate in the conveying direction of the material. The negative pressure fan 250 is communicated with the two negative pressure suction cups 270 through the three-way electromagnetic valve 260, the two negative pressure suction cups 270 are driven by the connecting rod 240 to reciprocate along the conveying direction, when the negative pressure suction cups 270 move to the position above the article placing mechanisms 280, the negative pressure suction cups 270 are communicated with the negative pressure fan 250, the negative pressure suction cups 270 are enabled to be adsorbed on the carton boards on the uppermost layer, the negative pressure suction cups 270 drive the carton boards to move to the feeding end of the conveying device 100, when the negative pressure suction cups 270 move to the position above the belt 140, the negative pressure suction cups 270 are communicated with the external atmosphere, and the negative pressure suction cups 270 are separated from the carton boards to complete feeding.
Referring to fig. 2 and 3, the feeding device 200 further includes a placement mechanism 280, the placement mechanism 280 includes a supporting base 281, a lifting assembly 282 is connected to an intermediate position of one end of the supporting base 281 far from the ground, the supporting base 281 is connected to a horizontally disposed supporting plate 283 through the lifting assembly 282, the supporting plate 283 is located between the two transporting beams 110, and the supporting plate 283 is located below the connecting rod 240. The carton boards bundled together by stacking are placed on the bearing plate 283, the distance between the bearing plate 283 and the supporting base 281 is adjustable by arranging the lifting assembly 282 between the bearing plate 283 and the supporting base 281, and the lifting assembly 282 pushes the bearing plate 283 to move towards the direction far away from the supporting base 281 in the feeding process of the feeding device 200, so that the distance between the uppermost carton board and the negative pressure suction cup 270 in the vertical direction is kept unchanged, and the working stability of the feeding device 200 is improved.
Referring to fig. 2 and 3, the lifting assembly 282 includes an electric push rod 284, a fixed end of the electric push rod 284 is vertically and fixedly connected with the supporting base 281, and a telescopic end of the electric push rod 284 is vertically and fixedly connected with the supporting plate 283. The supporting plate 283 is moved by the electric push rod 284, the electric push rod 284 is stable in stretching and retracting, the stretching distance is convenient to control, and the stability of the article placing mechanism 280 is improved. The gag lever post 285 of vertical setting is all worn to be equipped with in the position in bearing board 283 four corners, gag lever post 285 and bearing board 283 sliding connection, four gag lever posts 285 all with support base 281 vertical fixation and be connected. Through all wearing to establish the gag lever post 285 of vertical setting in the position of bearing plate 283 four corners, gag lever post 285 with bearing plate 283 sliding connection, utilize gag lever post 285 to lead to the removal of bearing plate 283, reduce the bending stress that the flexible end that electric putter 284 receives at the course of the work, improve electric putter 284's life.
Referring to fig. 4, the hot-pressing laminator 300 in step S3 includes a nip roller, a second heating roller 320 is disposed above the conveying roller 310, the second heating roller 320 is fixedly connected to the body of the hot-pressing laminator 300, the nip roller is rotatably connected to the body of the hot-pressing laminator 300, the rotation axis of the nip roller and the rotation axis of the second heating roller 320 are located in the same vertical plane, and the temperature of the surface of the second heating roller 320 is between 70 degrees celsius and 90 degrees celsius.
Referring to fig. 5, the lamp heating machine 400 in step S4 includes a machine body 410, a cover 420 is hinged to one end of the top of the machine body 410, a plurality of heating lamps are fixedly connected to one side of the cover 420 close to the machine body 410, the heating lamps are near infrared lamps 430, and the carton board is heated to 100 ℃ to 120 ℃ by the near infrared lamps 430. The carton board which is conveyed into the space between the hood 420 and the machine body 410 and is covered with the plastic film is further heated by the heating lamp tube, the temperature of the surface of the carton board is heated to be between 100 ℃ and 120 ℃, and the adhesion stability between the carton board and the plastic film is further improved under the condition that ink is on the surface of the carton board.
Referring to fig. 5, a temperature sensor 440 is fixedly connected to the body 410, and a detection end of the temperature sensor 440 abuts on a side of the carton board close to the near-infrared lamp 430. Through fixed connection temperature sensor 440 on organism 410, utilize temperature sensor 440 to detect the temperature on carton board surface, be convenient for adjust near infrared lamp 430.
The implementation principle of the film laminating method for reducing paperboard warpage in the embodiment of the application is as follows: the carton board is preheated before the film is coated on the carton board, so that the moisture in the carton board is reduced, the possibility of deformation of the carton board is reduced, and the smoothness of the carton board is improved through rolling.
Carry out the pressfitting with plastic film and carton board through utilizing second warming mill 320 at the tectorial membrane in-process, make the smooth surface of laying at the carton board of plastic film, the carton board passes through glue and plastic film laminating together, utilizes second warming mill 320 to further heat the carton board, reduces the carton board because of absorbing the moisture in the glue and warp the possibility to accelerate the speed that glue solidifies, improve the stability that carton board and plastic film are connected.
After the plastic film is attached to the carton board, the carton board is conveyed into the lamp light heater 400 to be heated again, and the adhesion stability between the carton board and the plastic film is further improved under the condition that ink exists on the surface of the carton board.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. A film covering method for reducing paperboard warpage mainly comprises the following steps: step S1: feeding: placing the stacked carton boards one by one on a conveying device (100) by using a feeding device (200); step S2: conveying: conveying the carton board into a hot-pressing film laminating machine (300) by using a conveying device (100), and preheating the carton board by using the conveying device (100) in the conveying process; and step S3: coating a film; a hot-pressing film laminating machine (300) is used for bonding the carton board and the plastic film and heating the carton board and the plastic film; and step S4: shaping: further heating the carton board and the plastic film which are adhered together by using a lamplight heating machine (400); step S5: slitting: cutting the plastic film by using a cutting device, and cutting off the film between two adjacent carton boards to finish film covering;
the conveying device (100) in the step S1 comprises two conveying cross beams (110) which are arranged oppositely, two rotating rollers (120) and a first motor (130), wherein the conveying cross beams (110) are horizontally arranged, the two rotating rollers (120) are vertically and rotatably connected between the two conveying cross beams (110), the two rotating rollers (120) are horizontally arranged, one of the rotating rollers (120) is located at one end, close to the hot-pressing laminator (300), of the conveying cross beam (110), the other rotating roller (120) is close to one end, far away from the body of the hot-pressing laminator (300), of the conveying cross beam (110), the first motor (130) is fixedly connected to one side, far away from the other conveying cross beam (110), of one conveying cross beam (110), a main shaft of the first motor (130) is coaxially and fixedly connected with one rotating roller (120) close to the body (410) of the hot-pressing laminator (300), and the two rotating rollers (120) are in transmission connection through a belt (140); two be provided with backing roll (150) between live-rollers (120), backing roll (150) vertical rotation is connected between two delivery beam (110), the axis of rotation of backing roll (150) is parallel with the axis of rotation of live-rollers (120), the axis of rotation of backing roll (150) is located the plane top at the axis of rotation place of two live-rollers (120), belt (140) cover is established on backing roll (150), backing roll (150) top is provided with first warming mill (170), the surface temperature of first warming mill (170) is between 40 degrees centigrade to 60 degrees centigrade.
2. The laminating method for reducing the warpage of the paperboard as claimed in claim 1, wherein: first warming mill (170) include roll body (171), bracing piece (172), heater strip (173) and two connecting blocks (174), roll body (171) are connected with bracing piece (172) coaxial rotation, heater strip (173) fixed connection is on bracing piece (172), two connecting block (174) fixed connection respectively is at the both ends of bracing piece (172) length direction, two the equal fixedly connected with backup pad (175) in transport crossbeam (110) top, two spout (176) have all been seted up on the relative lateral wall in backup pad (175), two connecting block (174) sliding connection respectively is in two spout (176), connecting block (174) are close to the one end elastic connection who carries crossbeam (110) through spring and spout (176), backup pad (175) top threaded connection has and is used for restricting gliding bolt (178) of connecting block (174).
3. The laminating method for reducing the warpage of the paperboard as claimed in claim 1, wherein: the feeding device (200) in the step S1 comprises a reciprocating lead screw (210), a second motor (220), a guide rod (230), a connecting rod (240), a negative pressure fan (250), a three-way electromagnetic valve (260) and two negative pressure suction cups (270) used for adsorbing carton boards, wherein the reciprocating lead screw (210) is horizontally arranged, the length direction of the reciprocating lead screw (210) is parallel to the length direction of the conveying cross beam (110), the reciprocating lead screw (210) is rotatably connected above one of the conveying cross beams (110), a spindle of the second motor (220) is fixedly connected with the reciprocating lead screw (210) coaxially, the second motor (220) is fixedly connected with the conveying cross beam (110), a rotating roller (120) far away from a body of the hot-pressing film covering machine (300) is located in the middle position of the length direction of the reciprocating lead screw (210), the guide rod (230) is fixedly connected above the other conveying cross beam (110), the guide rod (230) is arranged opposite to the reciprocating lead screw (210), the guide rod (230) is connected with a sliding block (231) in a sliding manner, the lead screw (210) is fixedly connected with the reciprocating lead screw connecting rod (211), the reciprocating lead screw connecting rod (240) is fixedly connected between the two negative pressure suction cups (240) and the conveying cross beam (240) is perpendicular to the conveying cross beam (240), and the conveying cross beam (211), and the negative pressure suction cups (240) respectively The positions of the two ends are that the first end of the three-way electromagnetic valve (260) is communicated with the air inlet end of the negative pressure fan (250), the second end of the three-way electromagnetic valve (260) is communicated with the atmosphere, and the third end of the three-way electromagnetic valve (260) is communicated with the two negative pressure suckers (270).
4. A laminating method for reducing warpage of paperboard as recited in claim 3, wherein: the feeding device (200) further comprises an object placing mechanism (280), the object placing mechanism (280) comprises a supporting base (281), a bearing plate (283) and a lifting assembly (282), the bearing plate (283) is horizontally arranged, the bearing plate (283) is connected with the supporting base (281) through the lifting assembly (282), the bearing plate (283) is located between the two conveying cross beams (110), and the bearing plate (283) is located below the connecting rod (240).
5. The laminating method for reducing the warpage of the paperboard as claimed in claim 4, wherein: the lifting assembly (282) comprises an electric push rod (284), the fixed end of the electric push rod (284) is vertically and fixedly connected with the supporting base (281), and the telescopic end of the electric push rod (284) is vertically and fixedly connected with the bearing plate (283).
6. The laminating method for reducing the warpage of the paperboard as claimed in claim 5, wherein: the position of bearing board (283) four corners all wears to be equipped with gag lever post (285) of vertical setting, gag lever post (285) and bearing board (283) sliding connection, four gag lever post (285) all with support base (281) vertical fixed connection.
7. The laminating method for reducing the warpage of the paperboard as claimed in claim 1, wherein: the hot-pressing film laminating machine (300) in the step S3 comprises a conveying roller (310), a second heating roller (320) is arranged above the conveying roller (310), the second heating roller (320) is fixedly connected to a machine body of the hot-pressing film laminating machine (300), the conveying roller (310) is rotatably connected with the machine body of the hot-pressing film laminating machine (300), the rotating axis of the conveying roller (310) and the rotating axis of the second heating roller (320) are located in the same vertical plane, and the surface temperature of the second heating roller (320) is 70-90 ℃.
8. The laminating method for reducing paperboard warpage as recited in claim 1, wherein: the lamplight heating machine (400) in the step S4 comprises a machine body (410), a machine cover (420) is hinged to one end of the top of the machine body (410), a plurality of heating lamp tubes are fixedly connected to one side, close to the machine body (410), of the machine cover (420), the heating lamp tubes are near infrared lamps (430), and the carton board is heated to 100-120 ℃ by means of the near infrared lamps (430).
9. The laminating method for reducing the warpage of the paperboard as claimed in claim 8, wherein: the machine body (410) is provided with a temperature sensor (440), and the detection end of the temperature sensor (440) is abutted against one side, close to the near-infrared lamp (430), of the carton board.
CN202011634374.0A 2020-12-31 2020-12-31 Film laminating method for reducing paperboard warping Active CN112757690B (en)

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CN113578592B (en) * 2021-07-28 2023-02-28 歌尔科技有限公司 Preparation method of paper-plastic packaging structure and spraying tool
CN114889206A (en) * 2022-05-12 2022-08-12 上海彩金包装科技股份有限公司 Production process of packaging box

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