CN116588411A

CN116588411A - Laminating machine and laminating method

Info

Publication number: CN116588411A
Application number: CN202310452750.1A
Authority: CN
Inventors: 林坚; 桂志斌
Original assignee: Xiamen Youpai New Life Technology Co ltd
Current assignee: Xiamen Youpai New Life Technology Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-08-15

Abstract

The application relates to the technical field of waste storage and provides a film laminating machine, which comprises a film guiding mechanism, a film laminating mechanism, a cutting mechanism and a shrinking device, wherein a U-shaped film is arranged on the film guiding mechanism, the U-shaped film is divided into two parts which are symmetrically folded to form a first connecting part and a second connecting part, a U-shaped opening is formed between the first connecting part and the second connecting part, the first connecting part and the second connecting part are vertically attached and conveyed onto the film laminating mechanism through the film guiding mechanism, and when the U-shaped film is conveyed onto the film laminating mechanism, the first connecting part and the second connecting part are vertically symmetrically separated, and the U-shaped opening is in an open state; the film covering mechanism comprises a first conveying belt, a first supporting piece and a second supporting piece, wherein the first conveying belt is used for conveying products. Based on the method, the whole process of the application does not need to help overturning the product manually, the whole process is automatically covered with film for packaging, the packaging time is short, and the production efficiency is improved. In addition, a film coating method is also provided.

Description

Laminating machine and laminating method

Technical Field

The application relates to the technical field of waste storage, in particular to a film laminating machine and a film laminating method.

Background

The film laminating machine is special equipment for carrying out outer surface film lamination on paper, board and other products, and the film is matched with the conveyed products in the conveying process to finish the film lamination packaging process of paper and plastic integration, and the film laminating machine is widely applicable to color printing, packaging paper, soft sheets, soft adhesive plates and other film lamination, so that the surface of the film laminating machine is bright, the color and luster are bright, and the film laminating machine has a waterproof function.

The existing film laminating machine on the market is simple in structure, the product overturning is generally required to be manually assisted in the film laminating process to realize the packaging process of the periphery of the product, the process packaging time is long, the production efficiency is low, and therefore, how to design a film laminating machine capable of automatically packaging is needed to be solved by the technical staff in the field.

Disclosure of Invention

In order to solve the problem of long packaging time in manual auxiliary operation, the application aims to provide a film laminating machine and a film laminating method.

In a first aspect, the present application provides a film laminating machine, which adopts the following technical scheme:

the film laminating machine comprises a film guiding mechanism, a film laminating mechanism, a cutting mechanism and a shrinking device, wherein a U-shaped film is arranged on the film guiding mechanism, the U-shaped film is divided into two parts which are symmetrically folded to form a first connecting part and a second connecting part, a U-shaped opening is formed between the first connecting part and the second connecting part, the first connecting part and the second connecting part are vertically attached and conveyed onto the film laminating mechanism through the film guiding mechanism, and when the U-shaped film is conveyed onto the film laminating mechanism, the first connecting part and the second connecting part are vertically symmetrically separated, and the U-shaped opening is in an open state; the laminating mechanism comprises a first conveying belt, a first supporting piece and a second supporting piece, wherein the first conveying belt, the first supporting piece and the second supporting piece are used for conveying products, the first supporting piece and the second supporting piece are distributed up and down by taking the first conveying belt as a symmetrical center, a supporting rod is arranged on one side, facing the first conveying belt, of the first supporting piece, the supporting rod is connected with the first supporting piece, a first clearance cavity is formed between the first supporting piece and the supporting rod, and a second clearance cavity is formed between the second supporting piece and the first conveying belt; the first connecting part is positioned in the first clearance cavity, the second connecting part is positioned in the second clearance cavity, and the U-shaped opening faces the first conveying belt; the cutting mechanism comprises an electric heating cutter, the electric heating cutter is L-shaped, the electric heating cutter is positioned at the upper part of the U-shaped film, the electric heating cutter cuts off the end part of the U-shaped film in advance to realize pre-sealing edges, when one end of a product is abutted to the edge sealing edges along the U-shaped opening by the first conveyor belt, the electric heating cutter cuts off the opening of the U-shaped opening, and the U-shaped film covers the outer surface of the product at the moment; the shrinkage device is used for heating the surface of the product after film lamination, and the film shrinks to be more closely attached to the outer surface of the product after being heated.

By adopting the technical scheme, the film for packaging products is conveyed and used by adopting the whole film folded into the U-shaped film, the U-shaped film is conveyed on the film covering mechanism by utilizing the film guiding mechanism, when the film is installed, the U-shaped opening of the U-shaped film faces to the left, the first connecting part is supported by the supporting rod, the second connecting part is supported by the second supporting piece, and by utilizing the structure, the U-shaped opening is always in an open state, the first connecting part and the second connecting part are not attached up and down in the conveying process, and finally the first connecting part and the second connecting part are discharged from the end part of the first conveying belt;

the product is placed on first conveyer belt and is carried towards the direction of electric heat cutter, when product one end is covered by U-shaped membrane when the U-shaped mouth butt in the preliminary banding by first conveyer belt, product is close to U-shaped membrane one side this moment, the vertical opening part of realizing the U-shaped mouth to U-shaped membrane downwards of "L" shape electric heat cutter cuts off, the tectorial membrane operation of whole surface is accomplished to the product this moment, this structure product utilizes the mode that U-shaped membrane straight line was carried at the in-process of tectorial membrane, utilize "L" shape electric heat cutter to cut off the banding simultaneously, the holistic tectorial membrane process of completion that can be quick, whole process need not to overturn with the help of the manual work to the product, whole automatic tectorial membrane packing, the packing time is few, production efficiency promotes.

Optionally, the membrane guiding mechanism contains the frame, be provided with in the frame be used for placing the feed cylinder place the roller, be used for the winding first tensioning roller and the power roller of U-shaped membrane, place roller, first tensioning roller and power roller all rotate connect in the frame, the power roller is provided with two and the level sets up relatively, the one end of power roller extends to all to be provided with intermeshing's gear in the frame, one of them still meshing has the rotating member of taking the gear on the gear of power roller.

Through adopting above-mentioned technical scheme, place the film feed cylinder that will prepare on placing the roller, utilize to place the roller and realize the support to the feed cylinder, U-shaped membrane twines in first tensioning roller, U-shaped membrane carries the circulation towards tectorial membrane mechanism under the traction action of outside, U-shaped membrane is at the in-process of carrying, the rotating member during operation drives one of them power roller and rotates, this power roller utilizes intermeshing's gear synchro control another power roller to rotate, U-shaped membrane wears to locate between two power rollers, produce opposite direction of rotation when two power rollers mesh, and then auxiliary film is carried towards tectorial membrane mechanism on the butt film.

Optionally, still be provided with swing mechanism in the frame, contain dead lever, pivot and a plurality of second tensioning roller, the dead lever be provided with two and with the pivot rotates to be connected, a plurality of second tensioning rollers are parallel to each other and both ends are fixed in on the dead lever, the both ends fixed connection of pivot in the frame.

By adopting the technical scheme, when the film works under external traction, the second tensioning roller swings towards the film conveying direction under the action of the tension of the film synchronously, and the second tensioning roller can buffer the film under the action of the buffer force in the swinging process, so that the local stress generated in the tensioning process of the film is reduced better, and the hidden danger of film damage is further reduced; meanwhile, when external traction force is suspended, the second tensioning roller can reset to an original state under the action of gravity, in the resetting process of the swinging mechanism, the film can be controlled to be prestretched for a section, when the subsequent external traction force is restarted, the local stress of the film is prevented from being increased due to the large tensioning degree, and the stress generated in the conveying process of the film can be effectively reduced by the integral structure under the tensioning force for keeping the normal film.

Optionally, the laminating mechanism further comprises a lifting device, the lifting device comprises a fixing column, a fixing block, a screw rod and a lifting block, the fixing block is connected to the upper portion of the fixing column, the fixing column is vertically arranged, the lifting block is slidingly connected to the fixing column, the screw rod sequentially penetrates through the fixing block and the lifting block in a threaded mode, and the lifting block is connected with the first supporting piece.

Through adopting above-mentioned technical scheme, when the screw rod clockwise or anticlockwise rotates, steerable elevating block is along the fixed column oscilaltion, and the elevating block links with first support piece, and when the elevating block removed, the synchronous first support piece that drives goes up and down, when first support piece goes up and down, the U-shaped mouth internal diameter altitude mixture control of steerable U-shaped membrane to the required height of different product packaging processes of adaptation, it is convenient to adjust, and the compatibility is strong.

Optionally, the bracing piece orientation one side of first conveyer belt is provided with the gas blowing pipe, the gas blowing direction of gas blowing pipe orientation banding, the tip is provided with main gas blowing hole, and whole body array distributes has a plurality of vice gas blowing holes.

By adopting the technical scheme, the upper film and the lower film at the U-shaped opening are not adhered to each other by utilizing the main air blowing hole on the air blowing pipe, and meanwhile, the film surface in the U-shaped opening can be blown, so that the local drying is kept, the film mounting operation can be better realized when a product enters, and meanwhile, the dryness of the product surface is kept; meanwhile, by utilizing the auxiliary air blowing holes, the film surface inside the U-shaped opening can be blown in a large range, and the drying area is enlarged.

Optionally, the cutting mechanism further comprises a second conveying belt, the first conveying belt conveys the products onto the second conveying belt, the electric heating cutter is located on the upper portion of the second conveying belt, the electric heating cutter comprises a transverse trimming and a longitudinal trimming, the transverse trimming is perpendicular to the conveying direction of the U-shaped film, and the longitudinal trimming is perpendicular to the transverse trimming.

Through adopting above-mentioned technical scheme, U-shaped membrane is when continuous forward carrying, finally flows to the second conveyer belt, and the U-shaped membrane is when realizing one side of product and cover, utilizes horizontal side cut to cut off the U-shaped membrane, utilizes vertical side cut to realize the seal to the U-shaped mouth, finally accomplishes the film mounting operation of product periphery, utilizes the electric heat cutter of this structure, promotes process sealing efficiency, and then promotes the packaging process.

Optionally, the second support piece is close to the position department of second conveyer belt is provided with the connecting plate, be provided with displacement sensor on the connecting plate, displacement sensor orientation first conveyer belt, displacement sensor is used for perception product position and by the system control electric heat cutter realizes to the U-shaped membrane cuts off.

Through adopting above-mentioned technical scheme, utilize the displacement sensor of this position, can in time discern the position of product, can give the system controller with the position signal real-time transmission of product simultaneously, the final control electric heat cutter of system controller realizes cutting off in time of U-shaped membrane, and the process beat is good, and the cutting is more accurate.

Optionally, the device also comprises a film pulling mechanism, and comprises a driving piece and a material rolling piece, wherein the driving piece comprises a plurality of rollers which are vertically symmetrical, driving belts are respectively arranged on the upper and lower rollers, bract points are arranged on the surfaces of the driving belts, gaps are formed between the driving belts, and edge waste materials of the U-shaped film flow through the gaps; the material rolling part comprises a vertical frame, an upper roller, a lower roller and a storage roller, wherein the lower roller slides on the vertical frame, the upper roller is arranged on the upper portion of the vertical frame, edge waste of the U-shaped film is sequentially wound on the upper roller, the lower roller and the storage roller, and a motor is arranged in the storage roller.

Through adopting above-mentioned technical scheme, the running roller of upper and lower symmetry drives the drive belt rotation respectively, when the drive belt rotates, utilize the bud point on surface and the edge butt of U-shaped membrane, thereby after the product tectorial membrane is accomplished, the edge waste material of U-shaped membrane can continue to accomodate towards the coil stock spare under the effect of drive belt, coil stock spare during operation, the waste material of U-shaped membrane twines roller and lower roller in proper order, until being connected on accomodating the roller, when the motor on accomodating the roller rotates, the U-shaped membrane drives down the roller and rises along vertical frame, with reduce the local stress of film in accomodating the in-process, prevent to lead to local fracture because of the stress is too big.

Optionally, the shrinking device comprises a plurality of horizontal rollers and heating fans which are horizontally distributed, a gap is reserved between each horizontal roller, the heating fans blow air from bottom to top through the gaps, and when a product after film lamination flows through the horizontal rollers, the film is shrunk and stuck to the product when meeting hot air.

Through adopting above-mentioned technical scheme, the product after the tectorial membrane is good is carried on horizontal roller by the second conveyer belt, at the in-process of carrying, and the air blowing is permeated through the clearance from bottom to top to the heating fan, and the membrane on product surface meets shrink and pastes tightly in the product after the steam for the whole roughness of product outward appearance is good, more pleasing to the eye.

In a second aspect, the present application provides a film laminating method, which adopts the following technical scheme:

the film laminating method adopts the film laminating machine, and specifically comprises the following steps:

s1, conveying the U-shaped film on the film covering mechanism by utilizing the film guiding mechanism, so that the first connecting part is positioned in the first clearance cavity, and the second connecting part is positioned in the second clearance cavity;

s2, placing a product to be coated on a first conveyor belt, and when the product is positioned in the U-shaped opening, flows and is abutted against the edge sealing at the end part of the U-shaped film, cutting off the opening of the U-shaped opening by the electric heating cutter, and sealing and adhering the periphery of the U-shaped film at the moment to realize coating of the product;

and S3, heating the surface of the coated product by using the shrinkage device.

By adopting the technical scheme, the product film coating process is realized by using the method, the packaging progress can be effectively improved, and the production efficiency is high.

In summary, the present application includes at least one of the following beneficial effects:

1. when one end of the product is abutted to the pre-sealed edge along the U-shaped opening by the first conveyor belt, one side of the product, which is close to the U-shaped film, is covered and wrapped by the U-shaped film, the L-shaped electric heating cutter vertically and downwards cuts off the opening of the U-shaped film, and the product completes the film covering operation of the whole outer surface.

2. The swing mechanism is utilized to avoid local stress increase of the film caused by larger tensioning degree, and the whole structure can effectively reduce the stress generated in the conveying process of the film under the condition of keeping the normal tensioning force of the film;

3. the running roller of upper and lower symmetry drives the drive belt rotation respectively, when the drive belt rotates, utilize the bud point of surface and the edge butt of U-shaped membrane to after the product tectorial membrane is accomplished, the edge waste material of U-shaped membrane can continue to accomodate towards the coil stock spare under the effect of drive belt, coil stock spare during operation, the waste material of U-shaped membrane twines roller and lower roller in proper order, until being connected on accomodating the roller, when the motor on accomodating the roller rotates, the U-shaped membrane drives down the roller and rises along vertical frame, in order to reduce the local stress of film in accomodating the in-process, prevent to lead to local fracture because of the stress is too big.

Drawings

FIG. 1 is a schematic view of a first view angle structure of the present application;

FIG. 2 is a schematic view of the U-shaped membrane structure of the present application;

FIG. 3 is a schematic view of a second view structure of the hidden portion of the housing of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the structure of the roller and the needle point of the present application;

FIG. 6 is a schematic view of the hidden portion of the housing of FIG. 1;

FIG. 7 is a schematic view of the structure of the film laminating mechanism of the present application;

fig. 8 is an enlarged view of a portion B in fig. 7.

Reference numerals illustrate:

100. a film guiding mechanism; 110. a frame; 120. placing a roller; 130. a first tension roller; 140. a power roller; 141. a rotating member; 150. a swinging mechanism; 151. a fixed rod; 152. a rotating shaft; 153. a second tension roller; 160. a fluff roll; 170. a support bar; 180. punching the hole assembly; 181. a connecting block; 182. a protective cover; 183. a rotating wheel; 184. a needle tip; 185. a tension spring; 186. a fastener; 200. a film covering mechanism; 210. a first conveyor belt; 220. a first support; 221. a support rod; 222. a first interstitial cavity; 230. a second support; 231. a second interstitial cavity; 240. a lifting device; 241. fixing the column; 242. a fixed block; 243. a screw; 244. a lifting block; 250. an air blowing pipe; 251. a main air blowing hole; 252. an auxiliary air blowing hole; 260. a connecting plate; 261. a displacement sensor; 300. a cutting mechanism; 310. an electric heating cutter; 311. transversely trimming; 312. longitudinally trimming; 320. a second conveyor belt; 400. a film pulling mechanism; 410. a driving member; 411. a roller; 412. a drive belt; 413. a bud point; 420. a coil stock; 421. a vertical frame; 422. an upper roller; 423. a lower roller; 424. a receiving roller; 500. a constriction device; 510. a horizontal roller; 520. a heating fan; 600. a U-shaped membrane; 610. a first connection portion; 620. a second connecting portion; 630. a U-shaped opening; 640. and (5) edge sealing.

Detailed Description

The present application will be described in further detail with reference to fig. 1 to 8.

Example 1: referring to fig. 1 and 2, the film laminating machine comprises a film guiding mechanism 100, a film laminating mechanism 200, a cutting mechanism 300 and a shrinking device 500, wherein a U-shaped film 600 is arranged on the film guiding mechanism 100, the U-shaped film 600 is divided into two symmetrical folding parts to form a first connecting part 610 and a second connecting part 620, a U-shaped opening 630 is formed between the first connecting part 610 and the second connecting part 620, and the U-shaped film is tensioned on the film guiding mechanism 100 and conveyed to the film laminating mechanism 200.

The film laminating mechanism 200 comprises a first conveying belt 210, a first supporting member 220 and a second supporting member 230, wherein the first supporting member 220 is located at the upper part of the first conveying belt 210, the second supporting member 230 is located at the lower part of the second conveying belt 320, the first supporting member 220 and the second supporting member 230 are symmetrically arranged, a supporting rod 221 is arranged on one side of the first supporting member 220, which faces the first conveying belt 210, the supporting rod 221 is in an L shape, one end of the supporting rod 221 is fixedly connected with the first supporting member 220, a first clearance cavity 222 is formed between the supporting rod 221 and the first supporting member 220, a second clearance cavity 231 is formed between the second supporting member 230 and the first conveying belt 210, when the U-shaped film 600 is conveyed on the film laminating mechanism 200, the first connecting portion 610 is located in the first clearance cavity 222, the second connecting portion 620 is located in the second clearance cavity 231, at the moment, the inner diameter of the U-shaped opening 630 is increased under the expanding action of the supporting rod 221 and the second supporting member 230, and meanwhile the U-shaped opening 630 faces the surface of the first conveying belt 210.

Specifically, referring to fig. 3, a rack 110 is provided on the film guiding mechanism 100, placing rollers 120 are provided on the rack 110, the placing rollers 120 are provided with two horizontally opposite rollers, each of which is rotatably connected to the rack 110, a cylinder wound with a U-shaped film 600 is directly placed on the two placing rollers 120, and when external traction force pulls the U-shaped film 600 to be conveyed, the placing rollers 120 realize autorotation under the gravity action of the cylinder. The frame 110 is also provided with a plurality of first tensioning rollers 130, the first tensioning rollers 130 are distributed in an S shape according to the up-down or left-right positions, the U-shaped film 600 is sequentially wound on the first tensioning rollers 130, tension control on the U-shaped film 600 in the conveying process is realized by using the first tensioning rollers 130, the U-shaped film 600 cannot be wrinkled in the conveying process, and flat package of the surface is maintained.

In order to better assist the smooth conveying of the U-shaped film 600, damage to the U-shaped film 600 caused by overlarge stress in the tension process is avoided, a group of power rollers 140 are rotatably arranged on the frame 110, one ends of the power rollers 140 extend to the inside of the frame 110 and are all provided with gears (not shown in the figure) meshed with each other, a rotating member 141 with a gear is further meshed with the gear of one power roller 140, in this embodiment, the rotating member 141 is a driving motor, the U-shaped film 600 is pulled by external traction force, the rotating member 141 is synchronously started, the rotating member 141 drives one power roller 140 to rotate during operation, the power roller 140 synchronously controls the other power roller 140 to rotate by utilizing the gears meshed with each other, the U-shaped film 600 is arranged between the two power rollers 140 in a penetrating manner, and opposite rotating directions are generated during the meshing of the two power rollers 140, and then the auxiliary film on the film is abutted to be conveyed towards the film covering mechanism 200.

Similarly, in order to further reduce the local stress generated during the conveying process of the U-shaped film 600, in this embodiment, the film guiding mechanism 100 is further provided with a swinging mechanism 150, which includes a fixing rod 151, a rotating shaft 152 and a plurality of second tensioning rollers 153, wherein two ends of the rotating shaft 152 are fixedly connected to the frame 110, the fixing rod 151 is provided with two parallel rollers which are rotatably connected to the rotating shaft 152, the second tensioning rollers 153 are parallel to each other and two ends of the second tensioning rollers are fixedly connected to the fixing rod 151,

by utilizing the swinging mechanism 150, when the U-shaped film 600 works under external traction, the second tensioning roller 153 swings towards the conveying direction of the U-shaped film 600 under the action of the tension of the U-shaped film 600, and the second tensioning roller 153 can buffer the U-shaped film 600 in the swinging process, so that the local stress generated by the U-shaped film 600 in the tensioning process is reduced better, and the hidden danger of damage to the U-shaped film 600 is further reduced; meanwhile, when external traction force is suspended, the second tensioning roller 153 can be reset to an original state under the action of gravity, in the resetting process of the swinging mechanism 150, the U-shaped film 600 on the placing roller 120 can be controlled to be prestretched for a section, so that when the subsequent external traction force is restarted, the local stress of the U-shaped film 600 is prevented from being increased due to the large tensioning degree, and the stress generated in the conveying process of the U-shaped film 600 can be effectively reduced under the normal tensioning force of the U-shaped film 600 due to the integral structure.

Referring to fig. 3 and 4, a fur roller 160 is further rotatably disposed on the frame 110, fur is distributed on the whole body array of the fur roller 160, a supporting bar 170 is disposed on the upper portion of the fur roller 160, the supporting bar 170 is fixedly connected with the frame 110, a pricking hole is formed on the supporting bar 170 in a sliding manner, the pricking hole assembly 180 comprises a connecting block 181, a protecting cover 182 and a rotating wheel 183, the protecting cover 182 is hinged with the connecting block 181, the rotating wheel 183 is rotatably connected in the protecting cover 182, the protecting cover 182 is in a semi-open state, when the roller rotating wheel 183 is mounted in the protecting cover 182, a half structure of the rotating wheel 183 can be observed from the side edge of the protecting cover 182, a plurality of needle points 184 are distributed along the outer Zhou Dengjiao degrees of the rotating wheel 183, the needle points 184 are in a V-shaped structure, the needle points 184 are inserted in the rotating wheel 183, the tip points face outwards, the U-shaped film 600 is simultaneously abutted to the fur roller 160 in the tensioning conveying process, the connecting block 181 and the left side and right side surfaces of the protecting cover 182 are symmetrically connected with a group of tension springs 185, and the protecting cover 182 can be turned up and down along the hinging points under the action of the tension springs 185.

Referring to fig. 4 and 5, when the protective cover 182 turns over toward the direction of the fluff roller 160, the needle tip 184 on the rotary wheel 183 abuts against the U-shaped film 600, and when the U-shaped film 600 is moved and conveyed, the needle tip 184 performs hole punching operation on the film, and the film does not need to perform pre-hole punching operation in advance by using an external hole punching process by using the hole punching assembly 180, so that local air blowing is not generated when the film is coated on the product later, and the film is better coated on the product. In this embodiment, after the needle tip 184 is used for a long time, the tip portion is easy to affect the hole punching effect of the U-shaped film 600 due to abrasion, so that the fastening piece 186 for fixing the needle tip 184 is arranged on the rotating wheel 183, the fastening piece 186 is an inner hexagon bolt, the fastening piece 186 is in threaded connection with the rotating wheel 183, the end portion is abutted to the needle tip 184, the needle tip 184 is spliced on the rotating wheel 183, detachable installation is achieved, process replacement and maintenance are convenient, meanwhile, the fastening piece 186 is abutted and fixed, stability is improved, and the needle tip 184 cannot break away from in the continuous rotation process of the rotating wheel 183.

Referring to fig. 6 and 7, the film covering mechanism 200 further includes a lifting device 240, the lifting device 240 includes two fixing columns 241, two fixing blocks 242, two screws 243 and two lifting blocks 244, the fixing columns 241 are vertically and parallel, the fixing blocks 242 are connected to the upper portions of the fixing columns 241, the lifting blocks 244 are vertically slidably connected to the two fixing columns 241, the screws 243 sequentially pass through the fixing blocks 242 and the lifting blocks 244 from top to bottom in a threaded manner, and one end of the lifting block 244 facing the first supporting member 220 is fixedly connected with the supporting member. When the screw 243 rotates clockwise or anticlockwise, the lifting block 244 can be controlled to lift up and down along the fixed column 241, the lifting block 244 is connected with the first supporting member 220, when the lifting block 244 moves, the first supporting member 220 is synchronously driven to lift, and when the first supporting member 220 lifts, the height adjustment of the inner diameter of the U-shaped opening 630 of the U-shaped film 600 can be controlled to adapt to the heights required by different product packaging processes.

Referring to fig. 7 and 8, an air blowing pipe 250 is disposed on one side of the support bar 221 facing the first conveyor belt 210, the air blowing direction of the air blowing pipe 250 is the same as the conveying direction of the U-shaped film 600, the air blowing pipe 250 is located in the U-shaped opening 630, a main air blowing hole 251 is disposed at the end of the air blowing pipe 250, a plurality of auxiliary air blowing holes 252 are distributed in a whole array, the upper film and the lower film at the U-shaped opening 630 are not adhered to each other by the main air blowing holes 251 on the air blowing pipe 250, and meanwhile, air can be blown to the film surface in the U-shaped opening 630, so that partial dryness is kept, film mounting operation is better realized when products enter, and meanwhile, dryness of the product surface is kept; meanwhile, the auxiliary air blowing holes 252 can be used for blowing air to a large extent on the film surface in the U-shaped opening 630, and the drying area can be enlarged.

Referring to fig. 1 and 6, the cutting mechanism 300 includes a second conveying belt 320 and an electrothermal cutter 310, the second conveying belt 320 is abutted against the first conveying belt 210 and is flush with the first conveying belt 210, the electrothermal cutter 310 is located above the second conveying belt 320, the first conveying belt 210 conveys products onto the second conveying belt 320, the electrothermal cutter 310 is L-shaped and includes a transverse trimming 311 and a longitudinal trimming 312, during conveying of the U-shaped film 600, the first connecting portion 610 is conveyed onto the second conveying belt 320 by the first gap cavity 222, the second connecting portion 620 flows out from the second gap cavity 231 through a gap between the first conveying belt 210 and the second conveying belt 320, and then is jointly conveyed onto the second conveying belt 320 with the first connecting portion 610, when the first product is coated, the electrothermal cutter 310 cuts off the end portion of the U-shaped film 600 in advance to achieve a pre-sealing edge 640 of the end portion of the U-shaped film 600, when one end of the products is abutted against the edge sealing edge by the first conveying belt 210 along the U-shaped opening 630, and the electrothermal cutter 310 achieves covering the outer surface of the U-shaped film 600 at the opening of the cut opening. In this embodiment, the transverse trimming 311 is perpendicular to the conveying direction of the U-shaped film 600, the longitudinal trimming 312 is perpendicular to the transverse trimming 311, when one end of the product is abutted against the edge sealing 640, the U-shaped film 600 is cut off by the transverse trimming 311 when one side of the product is covered, the sealing of the U-shaped opening 630 is realized by the longitudinal trimming 312, the film mounting operation of the periphery of the product is finally completed, and the sealing efficiency of the process is improved by using the electric heating cutter 310 of the structure, thereby further improving the packaging process.

It should be noted that, the electric heating cutter 310 is vertically slidably disposed, the electric heating cutter 310 is provided with an electric heating wire (not shown in the figure) towards the end of the second conveying belt 320, the periphery of the electric heating wire is provided with a high temperature cloth (not shown in the figure) for wrapping, the electric heating wire is heated by electrifying, the high temperature cloth is used for preventing the risk of scald caused by the local overhigh temperature of the electric heating wire, and the U-shaped film 600 is fused by the electric heating wire.

In this embodiment, the second supporting member 230 is provided with a connecting plate 260 near the inlet of the second conveying belt 320, the connecting plate 260 is provided with a displacement sensor 261, the displacement sensor 261 faces the surface of the first conveying belt 210 and is used for sensing the position of a product and realizing cutting of the U-shaped film 600 by the system control electrothermal cutter 310, the position of the product can be timely identified by utilizing the displacement sensor 261 at the position, and meanwhile, the position signal of the product can be transmitted to the system controller in real time, and the system controller finally controls the electrothermal cutter 310 to realize timely cutting of the U-shaped film 600.

Specifically, the side edge of the trimming mechanism is further provided with a film pulling mechanism 400, which comprises a driving piece 410 and a coil piece 420, the driving piece 410 comprises a plurality of rollers 411 which are vertically symmetrical, the rollers 411 are arranged in a straight line, the upper part and the lower part are respectively provided with a driving belt 412, the driving belts 412 are in a ring structure, the outer surfaces of the driving belts 412 are provided with bracts 413, gaps are reserved between the driving belts 412 between the upper part and the lower part, the edge part of the U-shaped film 600 flows through the gaps between the driving belts 412 in the process of finishing film coating, the bracts 413 on the surfaces are utilized to abut against the edge of the U-shaped film 600, so that after the film coating of a product is finished, edge scraps of the U-shaped film 600 can be continuously stored towards the coil piece 420 under the action of the driving belts 412, and the driving belts 412 are also used as main power sources of external traction force of the U-shaped film 600 in the embodiment.

The coiling material piece 420 contains vertical frame 421, go up roller 422, lower roller 423 and take-up roller 424, lower roller 423 is provided with a plurality of slips on vertical frame 421, go up roller 422 and be provided with a plurality of upper portions that set up at vertical frame 421, the edge waste material of U-shaped membrane 600 twines in proper order on last roller 422, lower roller 423 and take-up roller 424, in this embodiment, be provided with the motor (not shown in the figure) on the take-up roller 424, during the coiling material piece 420 work, the waste material of U-shaped membrane 600 twines roller 422 and lower roller 423 in proper order, until being connected on take-up roller 424, when the motor on the take-up roller 424 rotates, U-shaped membrane 600 drives lower roller 423 and rises along vertical frame 421, in order to reduce the local stress of film in the take-up process, prevent to lead to local fracture because of the stress is too big.

Referring to fig. 1 and 6, the shrinking device 500 is located at the outlet of the second conveying belt 320, and comprises a plurality of horizontal rollers 510 and heating fans 520 which are horizontally distributed, the height of each horizontal roller 510 is flush with that of the second conveying belt 320, gaps are reserved between each horizontal roller 510, the heating fans 520 blow hot air from bottom to top through the gaps, when products on the second conveying belt 320 are conveyed onto the horizontal rollers 510, films of the products are tightly attached to the products when the films shrink due to heat, and therefore the appearance of the products is good in overall flatness and attractive.

The implementation principle of the embodiment of the application is as follows: when one end of a product is abutted against the pre-sealed edge 640 along the U-shaped opening 630 by the first conveying belt 210, one side of the product, which is close to the U-shaped film 600, is covered and wrapped by the U-shaped film 600, the L-shaped electrothermal cutter 310 vertically downwards cuts off the opening of the U-shaped opening 630 of the U-shaped film 600, and the product completes the film covering operation of the whole outer surface.

Example 2: the film coating method based on the film coating machine comprises the following steps:

s1, conveying the U-shaped film 600 onto the film covering mechanism 200 by utilizing the film guiding mechanism 100, so that a first connecting part 610 of the U-shaped film 600 is positioned in the first clearance cavity 222, a second connecting part 620 is positioned in the second clearance cavity 231, and a first conveying belt 210 is positioned in a U-shaped opening 630;

s2, placing a product with a film on the first conveyor belt 210, and when the product is positioned in the U-shaped opening 630, flows and is abutted against the edge sealing 640 at the end part of the U-shaped film 600, cutting off the opening of the U-shaped opening 630 by the electric heating cutter 310, and sealing and adhering the periphery of the U-shaped film 600 at the moment to realize film covering of the product;

s3, the shrinkage device 500 is utilized to heat the surface of the product after film coating, so that the film on the surface of the product cannot generate wrinkles, and the appearance degree is good.

The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A laminating machine, characterized in that: the film feeding device comprises a film guiding mechanism (100), a film covering mechanism (200), a cutting mechanism (300) and a shrinking device (500), wherein a U-shaped film (600) is arranged on the film guiding mechanism (100), the U-shaped film (600) is divided into two parts which are symmetrically folded to form a first connecting part (610) and a second connecting part (620), a U-shaped opening (630) is formed between the first connecting part (610) and the second connecting part (620), the first connecting part (610) and the second connecting part (620) are attached up and down and conveyed onto the film covering mechanism (200) through the film guiding mechanism (100), and when the U-shaped film (600) is conveyed onto the film covering mechanism (200), the first connecting part (610) and the second connecting part (620) are separated up and down symmetrically, and the U-shaped opening (630) is in an open state;

the laminating mechanism (200) comprises a first conveying belt (210), a first supporting piece (220) and a second supporting piece (230) for conveying products, wherein the first supporting piece (220) and the second supporting piece (230) are distributed up and down by taking the first conveying belt (210) as a symmetrical center, a supporting rod (221) is arranged on one side, facing the first conveying belt (210), of the first supporting piece (220), the supporting rod (221) is connected with the first supporting piece (220), a first clearance cavity (222) is formed between the first supporting piece (220) and the supporting rod (221), and a second clearance cavity (231) is formed between the second supporting piece (230) and the first conveying belt (210); the first connecting part (610) is positioned in the first clearance cavity (222), the second connecting part (620) is positioned in the second clearance cavity (231), and the U-shaped opening (630) faces the first conveying belt (210);

the cutting mechanism (300) comprises an electric heating cutter (310), the electric heating cutter (310) is L-shaped, the electric heating cutter (310) is positioned at the upper part of the U-shaped film (600), the electric heating cutter (310) cuts off the end part of the U-shaped film (600) in advance to realize a pre-sealing edge (640), when one end of a product is abutted to the sealing edge (640) along the U-shaped opening (630) by the first conveying belt (210), the electric heating cutter (310) cuts off the opening of the U-shaped opening (630), and at the moment, the U-shaped film (600) covers the outer surface of the product;

the shrinkage device (500) is used for heating the surface of the product after film lamination, and the film shrinks to be more closely attached to the outer surface of the product after being heated.

2. A laminator according to claim 1, wherein: the film guide mechanism (100) comprises a frame (110), a placing roller (120) for placing a charging barrel and a first tensioning roller (130) and a power roller (140) for winding the U-shaped film (600) are arranged on the frame (110), the placing roller (120), the first tensioning roller (130) and the power roller (140) are all rotationally connected to the frame (110), the power roller (140) is provided with two power rollers and horizontally oppositely arranged, one end of the power roller (140) extends to the frame (110) and is internally provided with gears meshed with each other, and a rotating piece (141) with gears is further meshed on one power roller (140) gear.

3. A laminator according to claim 2, wherein: still be provided with swing mechanism (150) on frame (110), contain dead lever (151), pivot (152) and a plurality of second tensioning roller (153), dead lever (151) be provided with two and with pivot (152) rotate and connect, a plurality of second tensioning rollers (153) are parallel to each other and both ends are fixed in on dead lever (151), the both ends fixed connection of pivot (152) in frame (110).

4. A laminator according to claim 1, wherein: the laminating mechanism (200) further comprises a lifting device (240), the lifting device (240) comprises a fixed column (241), a fixed block (242), a screw rod (243) and a lifting block (244), the fixed block (242) is connected to the upper portion of the fixed column (241), the fixed column (241) is vertically arranged, the lifting block (244) is slidingly connected to the fixed column (241), the screw rod (243) sequentially passes through the fixed block (242) and the lifting block (244) in a threaded mode, and the lifting block (244) is connected with the first supporting piece (220).

5. A laminator according to claim 1, wherein: one side of the supporting rod (221) facing the first conveying belt (210) is provided with a blowing pipe (250), the blowing direction of the blowing pipe (250) faces the edge sealing (640), the end part of the blowing pipe is provided with a main blowing hole (251), and a plurality of auxiliary blowing holes (252) are distributed in a whole body array.

6. A laminator according to claim 1, wherein: the cutting mechanism (300) further comprises a second conveying belt (320), the first conveying belt (210) conveys products to the second conveying belt (320), the electric heating cutter (310) is located on the upper portion of the second conveying belt (320), the electric heating cutter (310) comprises a transverse trimming (311) and a longitudinal trimming (312), the transverse trimming (311) is perpendicular to the conveying direction of the U-shaped film (600), and the longitudinal trimming (312) is perpendicular to the transverse trimming (311).

7. A laminator according to claim 6, wherein: the position of the second supporting piece (230) close to the second conveying belt (320) is provided with a connecting plate (260), the connecting plate (260) is provided with a displacement sensor (261), the displacement sensor (261) faces the first conveying belt (210), and the displacement sensor (261) is used for sensing the position of a product and controlling the electric heating cutter (310) by a system to cut off the U-shaped film (600).

8. A laminator according to claim 1, wherein: the film drawing mechanism (400) comprises a driving piece (410) and a material rolling piece (420), wherein the driving piece (410) comprises a plurality of rollers (411) which are vertically symmetrical, driving belts (412) are respectively arranged on the upper and lower rollers (411), bud points (413) are arranged on the surfaces of the driving belts (412), gaps are formed between the driving belts (412), and edge waste materials of the U-shaped film (600) flow through the gaps; the material rolling part (420) comprises a vertical frame (421), an upper roller (422), a lower roller (423) and a storage roller (424), wherein the lower roller (423) slides on the vertical frame (421), the upper roller (422) is arranged on the upper portion of the vertical frame (421), and edge waste of the U-shaped film (600) is sequentially wound on the upper roller (422), the lower roller (423) and the storage roller (424), and a motor is arranged in the storage roller (424).

9. A laminator according to claim 1, wherein: the shrinkage device (500) comprises a plurality of horizontal rollers (510) and heating fans (520) which are horizontally distributed, a gap is reserved between each horizontal roller (510), the heating fans (520) blow air from bottom to top through the gaps, and when a product after film lamination flows through the horizontal rollers (510), the film is shrunk and stuck to the product when meeting hot air.

10. A film coating method, characterized in that: use of a laminator according to any one of claims 1 to 9, comprising in particular the steps of:

s1, conveying the U-shaped film (600) on the film covering mechanism (200) by utilizing the film guiding mechanism (100) so that the first connecting part (610) is positioned in the first clearance cavity (222), and the second connecting part (620) is positioned in the second clearance cavity (231);

s2, placing a product to be coated on a first conveyor belt (210), and when the product is positioned in a U-shaped opening (630), flows and is abutted against an edge sealing (640) at the end part of the U-shaped film (600), cutting off the opening of the U-shaped opening (630) by the electric heating cutter (310), and sealing and adhering the periphery of the U-shaped film (600) at the moment to realize coating of the product;

and S3, heating the surface of the product after film coating by using the shrinkage device (500).