A laminator and a laminating method

Abstract

The application discloses a film laminating machine and a film laminating method, and relates to the technical field of film laying, wherein the front end of a movable support of a material laying device is provided with a plurality of clamps and a spraying device. When the movable support moves backward, the spraying device sprays liquid on the film, so that the film is attached to a workpiece (such as a brick layer) to be laminated, and the film is prevented from moving randomly. Meanwhile, an image acquisition device acquires an upper surface image of the workpiece to be laminated, and according to the image, the spraying device is controlled to pass through the front, middle and rear sections of the workpiece to be laminated at different speeds, and the angle of the nozzle is adjusted to avoid the gap between two adjacent workpieces, so that the attachment of the film to the workpiece to be laminated is further ensured. When the material laying device performs intermittent clamping and stretching actions on the film, the material guiding device can well fix the film, and a section of the film is pre-stored for next use, so that the film can be accurately and stably controlled in the whole process. The film is cut by using a heated metal blade, so that the edge of the film is smooth and the cutting is complete.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of film laying, in particular to a film laminating machine and a film laminating method. BACKGROUND

[0002] The film laminating machine is an automatic material laying device for laying sheet-shaped pearl wool protective film between layers of stacked materials. As shown in the drawings, taking brick stacking as an example, in order to avoid collision between upper and lower layers of bricks during transportation, a layer of sheet-shaped pearl wool b needs to be laid on top of each layer of bricks a (each layer of bricks a is arranged by a plurality of bricks) before stacking, and another layer of bricks with sheet-shaped pearl wool is stacked on the sheet-shaped pearl wool b, and the process is repeated until a brick stack is formed. Figure 9

[0003] A Chinese invention patent with publication number CN 109178494 A discloses a rapid and accurate film laminating mechanism, which mainly includes a rack, a film conveying assembly, a film feeding and holding assembly, a film cutting assembly, a film holding assembly, etc. The film conveying assembly is a pneumatic cylinder or a hydraulic cylinder; the film feeding and holding assembly includes a transmission device and a clamping device; the film cutting assembly includes a transmission device and a cutting device, and the cutting device is provided with a high-temperature cutting wire; the film holding assembly includes a transmission device and a film clamping device; the film conveying assembly is distributed above the middle part of the rack, and the film feeding and holding assembly and the film cutting assembly are installed at the head end of the film conveying assembly. When in use, the film conveying assembly will drive the film feeding and holding assembly and the film cutting assembly to the side of the film holding assembly, then the film clamping device will clamp the film, the film conveying assembly will return to the original position with the film clamping device and the film clamping device, the cutting device will start to cut the film, the film clamping device will be released, and the film will fall on the bricks. However, it still has the following problems: first, the film falling on the bricks is easily blown away by the surrounding air flow due to its light weight, and even slides off the bricks, affecting production. Second, the film is suspended and cut by pure machinery, which may cause uneven cutting, film tearing, and even incomplete cutting, affecting the normal operation of the film laminating work. Finally, the entire device has a simple function, and the film stretching and cutting protection is not in place, which may cause film movement deviation, off-line, tearing, or incomplete cutting. SUMMARY

[0004] The main purpose of the present application is to provide a film laminating machine and a film laminating method, which can effectively solve the technical problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A film laminating machine, comprising a rack, the rack being provided with a material guiding device, a material laying device and a cutting device according to the process connection, the rack comprising a first mounting plate, the lower end of the first mounting plate being provided with the material guiding device, the material guiding device being provided with a film passage two; ​

[0007] The paving device comprises a movable support and a plurality of clamps, the movable support is movably arranged at the upper end of the first mounting plate, and a plurality of clamps are arranged at the front end of the movable support for clamping the film from the second film channel.

[0008] The front end of the movable support is further provided with a spraying device for spraying towards the upper surface of the film.

[0009] The front end of the first mounting plate is further provided with the cutting device.

[0010] Further, the spraying device comprises a plurality of nozzles, and the plurality of nozzles are arranged at the movable support in the left-right direction.

[0011] Further, the movable support is movably arranged at the first mounting plate through a one-dimensional sliding table, and is provided with a driving mechanism for moving the movable support.

[0012] Further, the driving mechanism comprises a rack, a driving gear and a servo motor, the rack is fixedly arranged at the movable support, the servo motor is fixedly arranged at the first mounting plate, and the output shaft of the servo motor is fixedly provided with the driving gear engaged with the rack.

[0013] Further, the clamp is a two-pronged finger air cylinder.

[0014] Further, the material guiding device comprises a tension roller set and a pressing mechanism, the lower end of the first mounting plate is provided with the tension roller set for winding the film, and the lower end of the first mounting plate is provided with the pressing mechanism at the front and rear ends of the tension roller set; the pressing mechanism comprises a fixed clamp plate, a movable clamp plate and a driving device one, the two ends of the fixed clamp plate are fixedly hung at the lower end of the first mounting plate; the movable clamp plate is movably arranged at the lower end of the first mounting plate towards the fixed clamp plate, and is provided with the driving device one for moving the movable clamp plate; the film channel two is formed by the gap between the fixed clamp plate and the movable clamp plate and the tension roller set.

[0015] Further, the tension roller set comprises a mounting seat, fixed roller shafts and movable roller shafts, a plurality of the fixed roller shafts are rotatably arranged at the lower end of the first mounting plate, the mounting seat is fixedly arranged at the lower end of the first mounting plate, and a plurality of the movable roller shafts are movably and rotatably arranged at the mounting seat.

[0016] Further, the rack is further provided with a feeding device, the feeding device comprises side plates, lifting roller sets, traction roller sets and a driving motor, the rack is provided with the lifting roller sets, and the rack is fixedly provided with the side plates at the two sides of the lifting roller sets to form a material groove for placing the film roll; the rack is further provided with the traction roller sets for winding the film, and is provided with the driving motor for driving the traction roller sets; the rack is further provided with the first film channel connecting the traction roller sets and the material guiding device.

[0017] Further, the cutting device comprises a heating element, a connecting element, a metal blade and a driving device, the connecting element is movably arranged on the front end of the first mounting plate, and the connecting element is fixedly connected with the metal blade, and is provided with the heating element for heating the metal blade.

[0018] Further, the connecting element is made of metal, and the connecting element is provided with a mounting hole, and the heating element is an electric heating tube which is fixedly embedded in the mounting hole.

[0019] Further, the front end of the rack is fixedly provided with an image acquisition device, which is used to acquire image data of the workpiece to be coated, and adjust the rear moving speed of the movable support and / or the spraying angle of the spraying device according to the image data.

[0020] A film coating method using any of the film coating machines described above, comprising the following steps:

[0021] (1) Place the film roll in the trough, and make the film pass through the traction roller group, the first film passage, the rear pressing mechanism, the tension roller group and the front pressing mechanism in sequence, and fix the free end of the film by the pressing mechanism; start the heating element to heat and warm up the metal blade.

[0022] (2) Push and stop the workpiece to be coated in front of the equipment;

[0023] (3) Fix the free end of the film by each clamp, loosen the front pressing mechanism; move the movable support forward, so that the pulled-out film completely covers the workpiece to be coated below, and then tighten the front pressing mechanism;

[0024] (4) Lower the metal blade to cut the film, loosen the clamp, and make the cut film piece automatically fall and lay flat on the workpiece to be coated due to gravity; at the same time, loosen the rear pressing mechanism, and start the driving motor to make the film roll roll and stretch the film, and use the tension roller group to store the film amount for the next time; then tighten the rear pressing mechanism and stop the driving motor;

[0025] (5) Move the movable support backward; at the same time, spray liquid onto the upper surface of the film piece by each nozzle; after the movable support is reset, stop the spraying of the nozzle.

[0026] Further, in the step (2), the upper surface image of the workpiece to be coated is scanned and acquired by the image acquisition device, and the workpiece to be coated is divided into a front section, a middle section and a rear section along the front-rear direction according to the upper surface image; in the step (4), when the movable support moves backward, the moving speed of the movable support is adjusted by the servo motor, so that the spraying device moves through the front section at a first speed, moves through the middle section at a second speed, and moves through the rear section at the first speed again; and the first speed is less than or equal to the second speed; the larger the upper surface area of the workpiece to be coated is, the smaller the distance between two adjacent nozzles is, and the larger the first speed is.

[0027] Further, the spraying device comprises a plurality of nozzles arranged at intervals along the left-right direction and swingably arranged at the front end of the movable support, and the workpiece to be coated comprises a plurality of workpieces arranged along the left-right direction; in the step (4), when the movable support moves backward, the nozzles are swingingly adjusted according to the upper surface image of the workpiece to be coated, so that the nozzles are directed to the middle of a single workpiece and avoid the gap between two adjacent workpieces.

[0028] Further, the workpiece to be coated is a brick layer, and the thin film is pearl wool.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] Firstly, in the present application, the first mounting plate of the rack is provided with a material guiding device, a material laying device and a cutting device; the movable support of the material laying device is movably arranged on the first mounting plate of the rack, and the front end of the movable support is provided with a plurality of clamps and a spraying device. The thin film is clamped by the clamps, then the thin film is laid by the forward movement of the movable support, and then the upper surface of the thin film is sprayed with liquid by the spraying device during the backward movement and resetting of the movable support, so that the thin film is attached to the upper surface of the workpiece to be coated (such as a brick layer), thereby preventing the thin film from moving relative to the workpiece to be coated and other problems. In addition, the spraying and attaching are performed simultaneously when the movable support moves backward and resets, the mechanical structure and mechanical movement of the equipment are fully utilized, and the operation timing of stretching the thin film, falling the thin film and spraying the thin film is reasonably arranged, so that the present application has the advantages of high work efficiency and good coating effect.

[0031] Secondly, in the present application, the spraying device comprises a plurality of nozzles arranged at intervals. When the movable support moves backward, the nozzles spray liquid on the upper surface of the thin film, so that a plurality of long strip-shaped wetting areas are formed on the upper surface of the thin film, thereby achieving the purpose of allowing the whole thin film to be well attached to the workpiece to be coated without wetting the whole thin film.

[0032] Thirdly, in the application, the rack is fixed on the movable support, the servo motor is fixed on the first mounting plate, and the output shaft of the servo motor is fixed with a driving gear meshing with the rack. It can be seen that the movable support is driven to move by the servo motor and the rack, and has the advantages of smooth movement, numerical control, etc. In actual production, the moving distance and speed of the movable support can be adjusted according to needs, and the film covering effect and time consumption of the film covering process are controlled and balanced.

[0033] Fourthly, in the application, the material guiding device includes a tension roller set and a pressing mechanism, the tension roller set is arranged at the lower end of the first mounting plate, and the lower end of the first mounting plate is provided with a pressing mechanism composed of a fixed clamping plate, a movable clamping plate and a driving device at the front and rear ends of the tension roller set; the rear pressing mechanism is tightened, the front pressing mechanism is loosened, and when the material laying device clamps and carries the film to move forward, the film pulled out and stretched by the material laying device is part of the film pre-stored in the tension roller set; after the material laying device moves to the frontmost position and stops, the front pressing mechanism is tightened again, then the metal blade moves downward to cut the film; and then the rear pressing mechanism is loosened, so that the rear film is pre-stored in the tension roller set for next use. It can be seen that when the material laying device performs intermittent clamping and stretching action on the film, the material guiding device can well fix the film and pre-store a section of the film for next use, so that the film can be accurately and stably controlled in the whole process, the film covering accuracy is ensured, and the film covering effect is improved.

[0034] Fifthly, the front end of the rack is fixed with an image acquisition device. The image acquisition device obtains the image of the upper surface of the workpiece to be covered on the front of the equipment, and performs image processing analysis on the upper surface image to obtain image data of the workpiece to be covered. When the spraying device is working, the controller of the equipment adjusts the rear moving speed of the movable support and / or the spraying angle of the spraying device according to the image data. Specifically, (1) when the movable support moves backward, the spraying device passes through the front, middle and rear three sections of the film covering workpiece at different speeds. By changing the moving speed, the liquid spraying amount of the spraying device at the front and rear ends of the film is greater than that at the middle of the film, so that the front and rear ends of the film are more attached to the upper surface of the workpiece to be covered and are not easy to be blown up by air flow, etc. (2) The orientation of the nozzle is adjusted by left and right swinging, so that the nozzle is directed to the middle of a single workpiece, avoiding the gap between adjacent two workpieces. Thus, the problem that the liquid is quickly lost through the gap, the surface of the workpiece wetted by the liquid is small, and the film is not attached to the workpiece to be covered tightly and is easy to move is avoided.

[0035] Sixthly, the cutting device comprises a heating piece, a connecting piece, a metal blade and a driving device, the connecting piece is movably arranged at the front end of the first mounting plate, the connecting piece is fixedly connected with the metal blade, and the heating piece is arranged to heat the metal blade. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 Fig. 1 is a schematic view of the three-dimensional structure of the film laminating machine according to the present application;

[0037] Figure 2 Fig. 2 is a rear view of the film laminating machine according to the present application;

[0038] Figure 3 Fig. 3 is a schematic view of the disassembled film laminating machine according to the present application.

[0039] Figure 4 Fig. 4 is a schematic view of the structure of the material laying device, the first mounting plate and the spraying device according to the present application.

[0040] Figure 5 Fig. 5 is a schematic view of the structure of the first mounting plate, the material guiding device and the cutting device according to the present application.

[0041] Figure 6 Fig. 6 is a schematic view of the disassembled first mounting plate, material guiding device and cutting device according to the present application.

[0042] Figure 7 Fig. 7 is a schematic view of the disassembled and inverted first mounting plate, material guiding device and cutting device according to the present application.

[0043] Figure 8 Fig. 8 is a schematic view of the structure of the heating piece, connecting piece and metal blade according to the present application.

[0044] Figure 9 Fig. 9 is a schematic view of the structure of the brick stacking according to the present application.

[0045] The drawings are as follows: frame-1, second mounting plate-11, third mounting plate-12, first mounting plate-14, first connecting seat-141, second connecting seat-142, mounting seat-15, feeding device-2, side baffle-21, lifting roller group-22, traction roller group-23, driving motor-24, material guiding device-3, tension roller group-31, fixed roller shaft-311, movable roller shaft-312, pressing mechanism-32, clamping plate-321, movable clamping plate-322, connecting plate-324, driving device-323, material laying device-4, movable support-41, first connecting piece-413, second connecting piece-414, rack-412, servo motor-42, clamp-43, first infrared sensor-442, first trigger piece-441, second infrared sensor-443, second trigger piece-444, cutting device-5, driving device-2-51, connecting piece-52, connecting part-521, heating piece-53, metal blade-54, spraying device-6, nozzle-61, image acquisition device-7, brick layer-a, sheet-shaped pearl wool-b, film roll-c. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0047] As shown in Figures 1-8 A film laminating machine, comprising a frame 1, which is provided with a feeding device 2, a material guiding device 3, a material laying device 4, a cutting device 5 and a spraying device 6 in sequence.

[0048] As shown in Figures 1 to 3 The upper end of the frame 1 is equipped with the feeding device 2. The feeding device 2 is used for placing and feeding the film roll c, and mainly comprises side baffles 21, a lifting roller group 22, a traction roller group 23 and a driving motor 24. The frame 1 comprises a second mounting plate 11 and a third mounting plate 12. The upper end of the second mounting plate 11 is rotatably provided with four roller shafts arranged in an arc shape, which constitute the lifting roller group 22. The frame 1 is fixedly provided with side baffles 21 on both sides of the lifting roller group. The lifting roller group 22 and the side baffles 21 on both sides form a trough for placing the film roll c. There is a gap between the second mounting plate 11 and the third mounting plate 12, which serves as a film channel one. The frame 1 is rotatably provided with two roller shafts that cooperate with each other between the second mounting plate 11 and the third mounting plate 12, which constitute the traction roller group 23 for winding the film, and are provided with the driving motor 24 for driving the traction roller group 23. In use, the film roll c is placed in the trough; the free end of the film of the film roll c is pulled out and wound around the traction roller group 23, which orients and pulls the film. When the film is stretched towards the film channel one by external force, the film roll c rolls in the trough.

[0049] As a preference, the film of the film roll c comprises, but is not limited to, pearl wool.

[0050] As shown in Figure 1 and Figure 3 , the front end of the rack 1 is fixedly provided with an image acquisition device 7. Specifically, the upper end of the second mounting plate 11 is fixedly provided with the image acquisition device towards the front of the device through the mounting seat. The image acquisition device 7 mainly includes a depth camera and an image processor. The upper surface image of the workpiece to be coated placed in front of the device is obtained by the depth camera, and the image data of the workpiece to be coated is obtained by the image processor through image processing and analysis, including but not limited to the size of the outer contour, the gap between the arranged workpieces, etc. The controller (such as a PLC controller) of the device adjusts the rear moving speed of the movable support 41 and / or the spray angle of the spraying device 6 according to the image data fed back by the image acquisition device 7.

[0051] As shown in Figures 1 to 5 , the rack 1 further comprises a first mounting plate 14, which comprises but is not limited to a steel plate. The lower end of the first mounting plate 14 is provided with a material guiding device 3, and the upper end is provided with a material laying device 4.

[0052] As shown in Figures 1 to 7 , the material guiding device 3 comprises a tension roller set 31 and a pressing mechanism 32. The tension roller set 31 is arranged at the lower end of the first mounting plate 14 and is used to wind the film.

[0053] Specifically, the tension roller set 31 comprises a mounting seat 15, a fixed roller shaft 311 and a movable roller shaft 312. Three fixed roller shafts 311 are rotatably arranged at the lower end of the first mounting plate 312, the upper ends of two mounting seats 15 are fixedly arranged at the lower end of the first mounting plate 14, and two movable roller shafts 312 are movably arranged at the mounting seat 15. Of course, the number of fixed roller shafts 311 is not limited to three, and the number of movable roller shafts 312 is not limited to two. Their number can be increased or decreased as needed. Since the tension roller set is common in the conveying device, the remaining specific structure will not be described here.

[0054] As shown in Figures 1 to 7 , the lower end of the first mounting plate 14 is provided with a pressing mechanism 32 at the front and rear ends of the tension roller set 31. The two pressing mechanisms 32 are the same in structure. The pressing mechanism 32 mainly comprises a fixed clamping plate 321, a movable clamping plate 322, a connecting plate 324 and a driving device 323. The two ends of the fixed clamping plate 321 are detachably fixedly hung on the lower end of the first mounting plate 14 through the connecting plate 324. The movable clamping plate 322 is movably arranged at the lower end of the first mounting plate 14 towards the fixed clamping plate 321, and is provided with the driving device 323 for moving the movable clamping plate 322.

[0055] As preferred, the lower end of the movable clamping plate 322 is fixedly connected with a rubber sheet, which can better clamp the film by the elasticity of the rubber sheet and avoid damaging the film.

[0056] Specifically, the driving device one 323 includes but is not limited to first telescopic cylinders. The upper end of the first mounting plate 14 is fixedly provided with a first connecting seat 141 on each side. Each first connecting seat 141 is fixedly provided with a first telescopic cylinder. The piston rods of the two first telescopic cylinders are fixedly connected to the left and right ends of the movable clamping plate 322 after passing through the first mounting plate 14, so that the movable clamping plate 322 is movably arranged at the lower end of the first mounting plate 14.

[0057] As shown in Figures 1 to 7 , the material guiding device 3 forms a film passage two through the gap between the fixed clamping plate 321 and the movable clamping plate 322 and the tension roller group 31. The rear end of the film passage two is communicated with the film passage one, so that the film of the traction roller group 23 extends and connects to the film passage two of the material guiding device 3 through the film passage one.

[0058] As shown in Figures 1 to 7 , the front end of the first mounting plate 14 is further provided with a cutting device 5.

[0059] The cutting device 5 mainly includes a heating member 53, a connecting member 52, a metal blade 54, and a driving device two 51. The connecting member 52 is movably arranged at the front end of the first mounting plate 14 and is provided with the driving device two 51 for moving the connecting member 52. The connecting member 52 is fixedly connected with the metal blade 14 and is provided with the heating member 53 for heating the metal blade 54.

[0060] As shown in Figure 1 , Figure 5 , Figure 7 , and Figure 8 , as a specific embodiment, the driving device two 51 includes but is not limited to two second telescopic cylinders, which are fixedly arranged at the front end of the first mounting plate 14 through a second connecting seat 142. The two ends of the connecting member 52 are integrally provided with connecting portions 521, and the piston rods of the two second telescopic cylinders are fixedly connected to the connecting portions 521 at the two ends of the connecting member 52. In addition, the connecting member 52 is a heat-conducting member, including but not limited to a metal material. The connecting member 52 is generally strip-shaped, and the inside of the connecting member 52 is provided with a mounting hole, and the heating member 53 is embedded in the inside of the mounting hole. The heating member 53 includes but is not limited to an electric heating tube, which is fixedly embedded in the mounting hole of the connecting member 52. One side of the connecting member 52 is detachably fixedly provided with the metal blade 14 by screws or the like. In use, the electric heating tube generates heat, which in turn heats the connecting member 52 and the metal blade 14. The heated metal blade 14 can better cut the pearl wool, ensuring that the pearl wool is completely cut and the cut is smooth.

[0061] like Figures 1 to 4 As shown, the material spreading device 4 mainly includes a movable support 41 and several clamps 43. The movable support 41 is movably mounted on the upper end of the first mounting plate 14 and is equipped with a drive mechanism for moving it. Several clamps 43 are arranged at intervals at the front end of the movable support 41 for clamping the film from the film channel.

[0062] Specifically, the movable support 41 includes, but is not limited to, a frame structure constructed from crisscrossing aluminum profiles. Two of the aluminum profiles extending forward and backward within the movable support 41 are movably mounted on the upper end of the first mounting plate 14 via a one-dimensional sliding table. A rack 412 is fixed to the side of one of the extending aluminum profiles, and a servo motor 42 is fixed to the upper end of the first mounting plate. The output shaft of the servo motor 42 is fixed with a drive gear, which meshes with the rack. The rack 412, the drive gear, and the servo motor 42 constitute the aforementioned drive mechanism.

[0063] Preferably, the system also includes a first infrared sensor 442, a first trigger plate 441, a second infrared sensor 443, and a second trigger plate 444 for setting the travel distance of the movable bracket 41. The first infrared sensor 442 is electrically connected to the controller of the servo motor 42 (the controller includes, but is not limited to, a PLC controller, shown in the figure) and is fixed to the upper front position of the first mounting plate 14. The front end of the movable bracket 41 is fixed with the first trigger plate 441 for engaging and triggering the first infrared sensor 442. When the movable bracket 41 moves backward, causing the first trigger plate 441 to move directly below the first infrared sensor 442, the first infrared sensor 442 is triggered, thereby stopping the servo motor 42. The second infrared sensor 443 is fixed to the upper rear position of the first mounting plate 14. The rear end of the movable bracket 41 is fixed with the second trigger plate 444 for engaging and triggering the second infrared sensor 443. When the movable bracket 41 moves forward, causing the second trigger plate 444 to move directly below the second infrared sensor 443, the second infrared sensor 443 is triggered, thereby stopping the servo motor 42.

[0064] The number of clamps 43 includes, but is not limited to, four, which are arranged at intervals on the aluminum profiles extending left and right in the movable bracket 41. Preferably, the clamps 43 are two-claw finger cylinders, and the cylinder body of the two-claw finger cylinder is detachably fixed to the aluminum profiles extending left and right in the movable bracket 41 through the first connector 413.

[0065] like Figures 1 to 4 As shown, the front end of the movable support 41 is also provided with a spraying device 6 for spraying onto the upper surface of the film. The spraying device includes a plurality of nozzles 61, which are arranged at intervals along the left-right direction on the movable support.

[0066] Specifically, the number of nozzles 61 includes but is not limited to three, and each of the three nozzles 61 is detachably fixed to the second connecting piece 414, and the other end of the second connecting piece 414 is adjustably connected to the aluminum profile extending left and right in the movable support 41 through the driving member such as a gimbal. Each nozzle 61 is connected to the main pipe (not shown in the figure) through a branch pipe, and the liquid such as clean water is sprayed from the nozzle 61 through the main pipe and the branch pipe. As a preferred embodiment, the branch pipe and the main pipe include but are not limited to both being flexible pipes, and the main pipe is embedded in the cavity of the aluminum profile.

[0067] As Figures 1 to 9 A film covering method using the film covering machine described above is performed as follows:

[0068] (1) Before the initial start of the equipment, the film roll a is placed in the above-mentioned trough by manual or other equipment, and the film is pulled out by manual, so that the film passes through the traction roller group 23, the film passage one, the rear compression mechanism 32, the tension roller group 31 and the front compression mechanism 32 in turn, and the free end of the film is fixed by the compression mechanism 32; the heating piece 53 is started to make the metal blade 54 warm up to a stable temperature.

[0069] (2) The workpiece to be covered with film is pushed and stopped in front of the equipment by the conveyor.

[0070] (3) The free end of the film is clamped by each clamp 43 of the material laying device 4, and the front compression mechanism 32 is loosened; the movable support 41 of the material laying device 4 is moved forward, so that the pulled-out film completely covers the workpiece to be covered with film below, and the front compression mechanism 32 is tightened.

[0071] As a preferred embodiment, in the step (2), the upper surface image of the workpiece to be covered with film is scanned and obtained by the image acquisition device 7, the length and width dimensions of the upper surface of the workpiece to be covered with film are obtained through image processing analysis of the upper surface image, and the workpiece to be covered with film is divided into a front section, a middle section and a rear section along the front and rear directions according to the length and width dimensions obtained in the upper surface image. As a preferred embodiment, the workpiece to be covered with film is equally divided into three parts, i.e. the length of the front section = the length of the middle section = the length of the rear section.

[0072] (4) The metal blade 54 is lowered to cut the film, and the clamp 43 is loosened, so that the cut film piece automatically falls and lays flat on the workpiece to be covered with film due to gravity. At the same time, the rear compression mechanism 32 is loosened, and the driving motor 24 is started to make the film roll a roll, stretch the film, and store the amount of film for the next time by the tension roller group 31 (the movable roller shaft 312 is lowered due to gravity, so that the film is unfolded between the fixed roller shaft 311 and the movable roller shaft 312); then the rear compression mechanism 32 is tightened, and the driving motor 24 is stopped.

[0073] As preferred, when the movable support moves backward, the speed of the movable support 41 is adjusted by the servo motor 42, so that the spraying device 6 moves at a first speed through the front section of the workpiece to be coated, at a second speed through the middle section of the workpiece to be coated, and at the first speed through the rear section of the workpiece to be coated; and the first speed is less than or equal to the second speed; the larger the area of the upper surface of the workpiece to be coated and the smaller the distance between two adjacent nozzles, the greater the first speed. By changing the moving speed, the liquid spraying amount of the spraying device 6 at the front and rear ends of the film is greater than that at the middle of the film, so that the front and rear ends of the film bear more weight and are more attached to the upper surface of the workpiece to be coated, and are not easily blown up by air flow. The liquid spraying amount at the middle of the film is small, so that the total liquid spraying amount can be saved.

[0074] As preferred, each nozzle is swingably arranged at the front end of the movable support by a driving member such as a pan-tilt head; the workpiece to be coated includes a plurality of workpieces arranged in the left-right direction, such as a brick layer. In the step (4), when the movable support 41 moves backward, the contour of each workpiece (brick) is obtained by image processing and analysis of the image of the upper surface of the workpiece to be coated, so as to determine the size and position of each brick and the position of the gap between two adjacent bricks; and then the pan-tilt head is controlled according to the information of the upper surface image, so that the nozzles are adjusted to face the middle of the single workpiece and avoid the gap between two adjacent workpieces. Thus, the problem that the liquid is quickly lost through the gap, the surface of the workpiece wetted by the liquid is small, and the film is not closely attached to the workpiece to be coated and is easily moved is avoided.

[0075] (5) The movable support 41 of the paving device 4 is moved backward; meanwhile, the liquid is sprayed to the upper surface of the film sheet by the nozzles 61; and after the movable support 41 is reset, the spraying of the nozzles 61 is stopped.

[0076] (6) The workpiece to be coated after the film is removed by the conveyor;

[0077] (7) The steps (2)-(6) are repeated to complete the continuous coating operation on each workpiece to be coated.

[0078] As preferred, in the above coating method, the workpiece to be coated includes but is not limited to a brick layer, and the film includes but is not limited to pearl wool.

[0079] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A film laminating machine comprising a frame provided with a material guiding device, a material laying device and a cutting device in series according to a process, characterized in that: The rack comprises a first mounting plate, a lower end of the first mounting plate is provided with the material guiding device, the material guiding device is provided with a film passage two; The material guiding device comprises a tension roller group and a pressing mechanism, a lower end of the first mounting plate is provided with the tension roller group for winding the film, and the lower end of the first mounting plate is provided with the pressing mechanism at both ends of the tension roller group; the pressing mechanism comprises a fixed clamping plate, a movable clamping plate and a driving device one, both ends of the fixed clamping plate are fixedly hung on the lower end of the first mounting plate; the movable clamping plate is movably arranged on the lower end of the first mounting plate towards the fixed clamping plate, and is provided with the driving device one for moving the movable clamping plate; the film passage two is formed by the gap between the fixed clamping plate and the movable clamping plate and the tension roller group; The material laying device comprises a movable support and a plurality of clamps, the movable support is movably arranged on the upper end of the first mounting plate, and a plurality of the clamps for clamping the film from the film passage two are arranged at the front end of the movable support at intervals; The front end of the movable support is further provided with a spraying device for spraying towards the upper surface of the film; the spraying device comprises a plurality of nozzles, and the plurality of nozzles are arranged at intervals in the left-right direction on the movable support; The front end of the first mounting plate is further provided with the cutting device; The upper end of the rack is assembled with a feeding device for placing and feeding the film roll; In use, the free end of the film is clamped by each of the clamps, and the front pressing mechanism is loosened; the movable support is moved forward, so that the pulled-out film completely covers the underlying workpiece to be coated, and then the front pressing mechanism is tightened; The metal blade of the cutting device is lowered to cut the film, the clamps are loosened, the cut film piece automatically falls and is laid flat on the workpiece to be coated due to gravity; at the same time, the rear pressing mechanism is loosened, and the driving motor of the feeding device is started to make the film roll roll, stretch the film, and store the film amount for the next time by the tension roller group; then the rear pressing mechanism is tightened, and the driving motor is stopped; the movable support is moved backward; at the same time, the liquid is sprayed to the upper surface of the film piece by each nozzle; after the movable support is reset, the spraying of the nozzles is stopped.

2. The film laminating machine according to claim 1, wherein: The rack further comprises a rack, a driving gear and a servo motor, the rack is fixedly arranged on the movable support, the servo motor is fixedly arranged on the first mounting plate, and the output shaft of the servo motor is fixedly provided with the driving gear engaged with the rack.

3. The film laminating machine according to claim 1, wherein: The cutting device comprises a heating element, a connecting element, a metal blade and a driving device two, the connecting element is movably arranged on the front end of the first mounting plate, the connecting element is fixedly connected with the metal blade, and the heating element for heating the metal blade is arranged.

4. The film laminating machine according to claim 1, wherein: The front end of the rack is fixedly provided with an image acquisition device, the image acquisition device is used for acquiring image data of the workpiece to be coated, and the rear moving speed of the movable support and / or the spraying angle of the spraying device are adjusted according to the image data. The front end of the rack is fixedly provided with an image acquisition device, the image acquisition device is used for acquiring image data of the workpiece to be coated, and the rear moving speed of the movable support and / or the spraying angle of the spraying device are adjusted according to the image data.

5. A film laminating machine according to any one of claims 1 to 4, characterized in that: The feeding device comprises side plates, a lifting roller set, a traction roller set and a driving motor, the rack is provided with the lifting roller set, and the rack is fixed with the side plates on both sides of the lifting roller set, forming a material groove for placing the film roll; the rack is further provided with the traction roller set for winding the film, and is provided with the driving motor for driving the traction roller set; the rack is further provided with a film channel I connecting the traction roller set and the material guiding device.

6. A film coating method characterized by: The film covering machine is used to perform the following steps: (1) placing the film roll in the material groove, and making the film pass through the traction roller set, the film channel I, the rear pressing mechanism, the tension roller set and the front pressing mechanism in sequence, and fixing the free end of the film by the pressing mechanisms; starting the heating member to heat and warm up the metal blade; (2) pushing and stopping the workpiece to be covered by film in front of the equipment; (3) clamping the free end of the film by the clamps, loosening the front pressing mechanism, moving the movable support forward, making the pulled-out film completely cover the workpiece to be covered by film below, and then tightening the front pressing mechanism; (4) lowering the metal blade to cut the film, loosening the clamps, and making the cut film piece automatically fall and lay on the workpiece to be covered by film due to gravity; simultaneously, loosening the rear pressing mechanism, and starting the driving motor to make the film roll roll and stretch the film, and pre-storing the film amount for the next time by the tension roller set; then tightening the rear pressing mechanism, and stopping the driving motor; (5) moving the movable support backward; simultaneously, spraying liquid to the upper surface of the film piece by the nozzles; after the movable support is reset, stopping the spraying of the nozzles.

7. The method of claim 6, wherein: In the step (2), the image acquisition device scans and acquires the upper surface image of the workpiece to be covered by film, and divides the workpiece to be covered by film into a front section, a middle section and a rear section along the front-rear direction according to the upper surface image; in the step (4), when the movable support moves backward, the servo motor adjusts the moving speed of the movable support, so that the spraying device passes through the front section at a first speed, passes through the middle section at a second speed, and then passes through the rear section at the first speed; and the first speed is less than or equal to the second speed, the larger the upper surface area of the workpiece to be covered by film is, the smaller the distance between adjacent nozzles is, and the larger the first speed is.

8. The method of claim 7, wherein: The spraying device comprises a plurality of nozzles which are arranged at intervals along the left-right direction and are swingably arranged at the front end of the movable support; the workpiece to be covered by film comprises a plurality of workpieces arranged along the left-right direction; in the step (4), when the movable support moves backward, the nozzles are swingingly adjusted according to the upper surface image of the workpiece to be covered by film, so that the nozzles are directed to the middle of a single workpiece and avoid the gap between adjacent workpieces.

9. The method of claim 7 or 8, wherein: The workpiece to be covered by film is a brick layer, and the film is pearl wool.

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