CN217622268U

CN217622268U - Automatic two-sided laminating machine to version

Info

Publication number: CN217622268U
Application number: CN202220246385.XU
Authority: CN
Inventors: 林伟进; 陈奕选; 魏卢刚; 黄文亮
Original assignee: Shantou Youte Machinery Co ltd
Current assignee: Shantou Youte Machinery Co ltd
Priority date: 2022-01-30
Filing date: 2022-01-30
Publication date: 2022-10-21
Anticipated expiration: 2032-01-30

Abstract

A double-sided film laminating machine capable of automatically registering comprises a rack, a substrate layer unwinding device, a first laminating device, a second laminating device, a finished product winding device, a first color printing film unwinding device, a first clamping and conveying device, a second color printing film unwinding device, a second clamping and conveying device, a first hot melting film extruding device, a second hot melting film extruding device, a control device, a first vision camera and a second vision camera; the first vision camera is arranged between the first pressing device and the second pressing device, and the lens of the first vision camera faces the surface of the first color printing film; the first vision camera is arranged between the first pressing device and the second pressing device, and the lens of the first vision camera faces the surface of the second color printing film; the first vision camera and the second vision camera are respectively and electrically connected with corresponding input ends of the control device, and the first clamping and conveying device and the second clamping and conveying device are respectively and electrically connected with corresponding output ends of the control device. The double-sided laminating machine can automatically complete the double-sided laminating process of the substrate layer, realize the automatic register of double-sided patterns and improve the yield.

Description

Automatic double-sided laminating machine of register

Technical Field

The utility model relates to a laminating machine technical field, concretely relates to automatic two-sided laminating machine to version.

Background

The composite plastic woven cloth has been widely used in chemical industry, agriculture, food and cement industry, and it not only enhances the tensile strength of the woven cloth, but also has good air tightness and moisture resistance of the film bag, and is a good composite packaging material. In the prior art, a layer of polypropylene film (OPP film) is firstly compounded on the surface of plastic woven cloth by a film laminating machine, and then a plastic woven bag is manufactured; for marking products, patterns and characters are printed on the surface of an OPP film to form a color printing film, and then the color printing film is compounded with plastic woven cloth to prepare a plastic woven bag with the color printing patterns on the surface.

When patterns are required to be arranged on both sides of the woven bag, the patterns printed on both sides of the woven bag are generally required to be aligned, and if the patterns on both sides are not aligned, the patterns on both sides are offset, so that waste and defective products can be generated. Especially, the thickness of the color printing film compounded on the surface of the plastic woven cloth is thinner, and the color printing film is easy to deform when being fed, so that the phenomenon of pattern deviation of two sides of the plastic woven cloth is easy to occur. In order to prevent the patterns on the two sides of the woven plastic cloth from deviating, the conventional film laminating machine usually observes whether the patterns on the two sides deviate or not by an operator in the production process, and when the patterns deviate, the operator manually adjusts the patterns, for example, presses the surface of the woven plastic cloth or the color printing film, and applies a certain pressure to the surface of the OPP film or the plastic woven cloth to slow down the running speed of the OPP film or the plastic woven cloth and keep the patterns on the two sides of the woven plastic cloth aligned.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an automatic two-sided laminating machine to version is provided, this kind of two-sided laminating machine can accomplish the two-sided laminating process to the substrate layer automatically to can realize the automation of double-sided pattern and to the version, be favorable to carrying high yield. The technical scheme is as follows:

a double-sided film laminating machine capable of automatically registering comprises a rack, a substrate layer unwinding device, a first laminating device, a second laminating device, a finished product winding device, a first color printing film unwinding device, a first clamping and conveying device, a second color printing film unwinding device, a second clamping and conveying device, a first hot melt film extruding device and a second hot melt film extruding device, wherein the substrate layer unwinding device, the first laminating device, the second laminating device, the finished product winding device, the first color printing film unwinding device, the first clamping and conveying device, the second color printing film unwinding device, the second clamping and conveying device, the first hot melt film extruding device and the second hot melt film extruding device are all arranged on the rack; the substrate layer unreeling device, the first laminating device, the second laminating device and the finished product reeling device are sequentially arranged along the conveying direction of the substrate layer; the first color printing film unwinding device, the first clamping and conveying device and the first pressing device are sequentially arranged along the conveying direction of the first color printing film; the second color printing film unwinding device, the second clamping and conveying device and the second pressing device are sequentially arranged along the conveying direction of the second color printing film; the first laminating device and the second laminating device respectively comprise a cooling roller and a laminating roller which are mutually laminated and relatively rotate, the extrusion die head of the first hot melt film extruding device is positioned above the space between the cooling roller and the laminating roller of the first laminating device, and the extrusion die head of the second hot melt film extruding device is positioned above the space between the cooling roller and the laminating roller of the second laminating device; the method is characterized in that: the double-sided film laminating machine further comprises a control device, a first visual camera and a second visual camera; along the conveying direction of the substrate layer, the first vision camera is arranged between the first laminating device and the second laminating device, and a lens of the first vision camera faces the surface of the first color printing film; the second vision camera is arranged between the second color printing film unwinding device and the second clamping and conveying device along the conveying direction of the second color printing film, and a lens of the second vision camera faces the surface of the second color printing film; the first vision camera and the second vision camera are respectively and electrically connected with corresponding input ends of the control device, and the first clamping and conveying device and the second clamping and conveying device are respectively and electrically connected with corresponding output ends of the control device.

The substrate layer unwinding device, the first pressing device, the second pressing device and the finished product winding device are sequentially arranged along the conveying direction of the substrate layer, namely, the substrate layer is discharged from the substrate layer unwinding device, sequentially passes through the first pressing device and the second pressing device, and is wound at the finished product winding device after being laminated; the first color printing film unwinding device, the first clamping and conveying device and the first pressing device are sequentially arranged along the conveying direction of the first color printing film, namely, the first color printing film is unwound from the first color printing film unwinding device and enters the first pressing device for laminating under the clamping and conveying of the first clamping and conveying device; the second color printing film unwinding device, the second clamping and conveying device and the second pressing device are sequentially arranged along the conveying direction of the second color printing film, namely, the second color printing film is discharged from the second color printing film unwinding device and enters the first pressing device for laminating under the clamping and conveying of the second clamping and conveying device.

When the device works, the substrate layer sent out by the substrate layer unreeling device passes through the first laminating device, the front part of a lens of a first vision camera and the second laminating device in sequence under the driving of the first laminating device, the second laminating device and the finished product reeling device; when the base material layer passes through the first laminating device, the base material layer enters between a cooling roller and a laminating roller of the first laminating device, a first color printing film sent out by the first color printing film unwinding device enters between the cooling roller and the laminating roller of the first laminating device and is positioned on the front side of the base material layer under the driving of the first pinch device, a first hot melt film extruded by an extrusion die head of the first hot melt film extrusion device enters between the cooling roller and the laminating roller of the first laminating device and is positioned between the base material layer and the first color printing film (usually, the first hot melt film is firstly cooled and shaped on the cooling roller and then enters into a gap between the cooling roller and the laminating roller), and the base material layer entering the first laminating device and the first color printing film are smoothly laminated together through the first hot melt film under the combined action of the cooling roller and the laminating roller due to the certain temperature of the first hot melt film, so that the first color printing film is laminated on the front side of the base material layer; when the substrate layer coated with the first color printing film passes through the front of the lens of the first vision camera, the first vision camera shoots the patterns on the surface of the passing first color printing film and sends the patterns to the control device for processing; when the substrate layer coated with the first color printing film passes through the second laminating device, the substrate layer enters between a cooling roller and a laminating roller of the second laminating device, meanwhile, a second color printing film sent out by the second color printing film unreeling device enters between the cooling roller and the laminating roller of the second laminating device and is positioned at the rear side of the substrate layer under the driving of the second pinch device, meanwhile, a second hot melt film extruded by an extrusion die head of the second hot melt film extruding device enters between the cooling roller and the laminating roller of the second laminating device and is positioned between the substrate layer and the second color printing film (usually, the second hot melt film is firstly cooled and shaped on the cooling roller of the second laminating device and then enters into a gap between the cooling roller and the laminating roller), and the substrate layer and the first color printing film entering the first laminating device are smoothly coated together through the first hot melt film under the combined action of the cooling roller and the laminating roller due to the certain temperature of the first hot melt film, so that the second color printing film is coated at the rear side; and finally, winding the prepared laminated product by a finished product winding device. In the working process, the control device shoots the patterns on the surface of the first color printing film between the first pressing device and the second pressing device through the first vision camera, shoots the patterns on the surface of the second color printing film between the second color printing film unwinding device and the second clamping and conveying device through the second vision camera, compares and analyzes the patterns on the surface of the first color printing film and the patterns on the surface of the second color printing film, and adjusts the conveying speeds of the first clamping and conveying device and the second clamping and conveying device for the first color printing film and the second color printing film according to the comparison result, so that the automatic alignment of the double-sided patterns is realized, and the offset of the patterns of the first color printing film and the second color printing film which are covered on the two sides of the base material layer in the front-back direction is within an allowable range. The double-sided laminating machine can automatically complete the double-sided laminating process of the substrate layer, can realize automatic register of double-sided patterns, and is beneficial to improving the yield and reducing the skill requirement on operators.

Generally, the control device adopts a PLC controller or a single chip microcomputer.

In a preferred scheme, the double-sided film laminating machine further comprises a first light barrier, the first light barrier is installed on the rack and located between the first pressing device and the second pressing device, the first vision camera and the first light barrier are respectively located on two sides of the substrate layer, and the first light barrier is opposite to a lens of the first vision camera.

In a preferable scheme, the double-sided film laminating machine further comprises a second light blocking plate, the second light blocking plate is installed on the rack and located between the second color printing film unwinding device and the second clamping and conveying device, the second light blocking plate and the second vision camera are respectively located on two sides of the second color printing film, and the second light blocking plate is over against a lens of the second vision camera.

In a specific scheme, the pressing roller is a rubber roller.

In a preferred scheme, the cooling roller is rotatably arranged on the frame; the first pressing device and the second pressing device respectively comprise a swinging frame and a swinging cylinder, the middle part of the swinging frame is hinged on the rack, the pressing roller is rotatably arranged on the upper part of the swinging frame and positioned on one side of the cooling roller, the cylinder body of the swinging cylinder is arranged on the rack, and the piston rod of the swinging cylinder is hinged with the lower part of the swinging frame. When the film-penetrating device works, the piston rod of the swing cylinder can stretch to drive the swing frame to swing around the middle part of the swing frame, so that the pressing roller is driven to move towards or back to the cooling roller, and the film-penetrating operation is facilitated.

In a preferred scheme, the first pinch device and the second pinch device respectively comprise a pinch motor and two pinch rollers; the two pinch rollers are pressed mutually and rotate relatively; the pinch motor is arranged on the rack, an output shaft of the pinch motor is in transmission connection with one of the pinch rollers, and the pinch motor is electrically connected with the corresponding output end of the control device. When the pinch roll device works, the pinch motor drives one pinch roll to rotate and drives the other pinch roll to rotate relatively; the first color printing film and the second color printing film respectively penetrate through the two corresponding pinch rollers of the first pinch device and the second pinch device and respectively move towards the first pressing device and the second pressing device under the drive of the two pinch rollers. The control device can adjust the rotating speed of the two pinch rollers by controlling the rotating speed of the pinch motors, so that the conveying speed of the first color printing film or the second color printing film can be adjusted.

In a further preferred scheme, the first clamping and conveying device and the second clamping and conveying device respectively comprise two lifting guide rails, two lifting seats and two lifting mechanisms, the two lifting guide rails are installed on the rack and move up and down, the two lifting seats correspond to the two lifting guide rails one by one, and the lifting seats are installed on the lifting guide rails and are in sliding fit with the lifting guide rails; the two lifting mechanisms correspond to the two lifting seats one by one, the lifting mechanisms are arranged on the rack, and the power output ends of the lifting mechanisms are connected with the lifting seats; the two pinch rolls are arranged side by side up and down, the pinch roll at the lower side is rotatably arranged on the rack and is in transmission connection with an output shaft of the pinch motor, and two ends of the pinch roll at the upper side are rotatably connected with the two lifting seats. When the device works, the two lifting seats can be driven by the two lifting mechanisms to ascend or descend along the corresponding lifting guide rails simultaneously to drive the pinch roll at the upper side to ascend or descend by a certain height, so that the pinch roll moves towards or back to the other pinch roll, the first color printing film or the second color printing film is pressed or loosened by the two pinch rolls, and the film penetrating operation is facilitated.

In a further preferable scheme, the lifting mechanism comprises a lifting cylinder, a cylinder body of the lifting cylinder is installed on the rack, and a piston rod of the lifting cylinder faces downwards and is connected with the corresponding lifting seat. Therefore, the two lifting seats can be driven to respectively ascend or descend along the corresponding lifting guide rails by the expansion and contraction of the piston rods of the two lifting cylinders.

Generally, a plurality of first guide rollers are arranged between the substrate layer unreeling device and the finished product reeling device and used for guiding the trend of the substrate layer and keeping the substrate layer at a certain tension, so that the laminating quality of the substrate layer by the first laminating device and the second laminating device is favorably ensured; and a plurality of second guide rollers are arranged between the second color printing film unwinding device and the second clamping and conveying device and used for guiding the trend of the second color printing film and keeping the second color printing film at a certain tension, so that the shooting effect of the second vision camera on the second color printing film is favorably ensured.

The substrate layer unwinding device, the finished product winding device, the first color printing film unwinding device, the second color printing film unwinding device, the first hot melt film extrusion device and the second hot melt film extrusion device all adopt conventional structures, and detailed description is omitted here.

Compared with the prior art, the utility model, have following advantage:

the double-sided laminating machine can automatically complete the double-sided laminating process of the substrate layer, can realize automatic register of double-sided patterns, and is beneficial to improving the yield and reducing the skill requirement on operators.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a logic block diagram of the interior of the preferred embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the first clamping device or the second clamping device in the preferred embodiment of the present invention.

Detailed Description

As shown in fig. 1 to fig. 3, the automatic registering double-sided film laminating machine includes a frame 1, a substrate layer unwinding device (not shown), a first laminating device 3, a second laminating device 4, a finished product winding device, a first color printing film unwinding device 6, a first pinch device 7, a second color printing film unwinding device 8, a second pinch device 9, a first hot melt film extrusion device 10, a second hot melt film extrusion device 11, a first vision camera 12, a second vision camera 13, and a control device 14; the substrate layer unwinding device, the first pressing device 3, the second pressing device 4, the finished product winding device, the first color printing film unwinding device 6, the first clamping and conveying device 7, the second color printing film unwinding device 8, the second clamping and conveying device 9, the first hot melt film extruding device 10 and the second hot melt film extruding device 11 are all arranged on the rack 1; the substrate layer unreeling device, the first laminating device 3, the second laminating device 4 and the finished product reeling device are sequentially arranged along the conveying direction of the substrate layer 21; the first color printing film unwinding device 6, the first pinch device 7 and the first pressing device 3 are sequentially arranged along the conveying direction of the first color printing film 61; the second color printing film unwinding device 8, the second pinch device 9 and the second pressing device 4 are sequentially arranged along the conveying direction of the second color printing film 81; the first laminating device 3 and the second laminating device 4 both comprise a cooling roller 31 and a laminating roller 32 which are laminated with each other and rotate relatively, the extrusion die head 101 of the first hot melt film extruding device 10 is positioned above the space between the cooling roller 31 and the laminating roller 32 of the first laminating device 3, and the extrusion die head 111 of the second hot melt film extruding device 11 is positioned above the space between the cooling roller 31 and the laminating roller 32 of the second laminating device 4; along the conveying direction of the substrate layer 21, the first vision camera 12 is arranged between the first laminating device 3 and the second laminating device 4, and a lens of the first vision camera 12 faces the surface of the first color printing film 61; along the conveying direction of the second color printing film 81, the second vision camera 13 is arranged between the second color printing film unwinding device 8 and the second clamping and conveying device 9, and the lens of the second vision camera 13 faces the surface of the second color printing film 81; the first vision camera 12 and the second vision camera 13 are respectively and electrically connected with the corresponding input and output ends of the control device 14, and the first clamping and conveying device 7 and the second clamping and conveying device 9 are respectively and electrically connected with the corresponding output ends of the control device 14.

The double-sided film laminating machine of the embodiment further comprises a first light barrier 15 and a second light barrier 16, wherein the first light barrier 15 is installed on the machine frame 1 and located between the first pressing device 3 and the second pressing device 4, the first vision camera 12 and the first light barrier 15 are respectively located on two sides of the substrate layer 21, and the first light barrier 15 is over against a lens of the first vision camera 12; the second light blocking plate 16 is installed on the machine frame 1 and is positioned between the second color printing film unwinding device 8 and the second clamping and conveying device 9, the second light blocking plate 16 and the second vision camera 13 are respectively positioned on two sides of the second color printing film 81, and the second light blocking plate 16 is over against a lens of the second vision camera 13.

In this embodiment, the control device 14 is a PLC controller or a single chip microcomputer.

In the present embodiment, the cooling roller 31 is rotatably mounted on the frame 1; the first pressing device 3 and the second pressing device 4 both further comprise a swing frame 33 and a swing cylinder 34, the middle part of the swing frame 33 is hinged on the rack 1, the pressing roller 32 is rotatably installed on the upper part of the swing frame 33 and positioned on one side of the cooling roller 31, and the pressing roller 32 is a rubber roller; the cylinder body of the swing cylinder 34 is installed on the frame 1, and the piston rod of the swing cylinder 34 is hinged with the lower part of the swing frame 33. When the film-penetrating device works, the piston rod of the swing air cylinder 34 can stretch to drive the swing frame 33 to swing around the middle part of the swing frame, so that the pressing roller 32 is driven to move towards or back to the cooling roller 31, and the film-penetrating operation is facilitated.

In this embodiment, each of the first pinch device 7 and the second pinch device 9 includes a pinch motor 71, two pinch rollers 72, two lifting rails 73, two lifting seats 74, and two lifting cylinders 75; the two lifting guide rails 73 are both arranged on the frame 1 and move up and down, the two lifting seats 74 correspond to the two lifting guide rails 73 one by one, and the lifting seats 74 are arranged on the lifting guide rails 73 and are in sliding fit with the lifting guide rails 73; the two lifting cylinders 75 correspond to the two lifting seats 74 one by one, the cylinder bodies of the lifting cylinders 75 are installed on the rack 1, and the piston rods of the lifting cylinders 75 face downwards and are connected with the corresponding lifting seats 74; the pinch roll motor 71 is arranged on the rack 1, the two pinch rolls 72 are arranged side by side up and down and are pressed together, the pinch roll 72 on the lower side is rotatably arranged on the rack 1 and is in transmission connection with an output shaft of the pinch roll motor 71, and two ends of the pinch roll 72 on the upper side are rotatably connected with the two lifting seats 74; the pinch motor 71 is electrically connected to a corresponding output terminal of the control device 14. When the pinch roll device works, the pinch roll motor 71 drives the pinch roll 72 at the lower side to rotate, and drives the pinch roll 72 at the upper side to rotate relatively; the first color printing film 61 and the second color printing film 81 respectively pass through between the two corresponding pinch rollers 72 of the first pinch device 7 and the second pinch device 9, and are driven by the two pinch rollers 72 to respectively move towards the first pressing device 3 and the second pressing device 4. The control device 14 can adjust the rotation speed of the two pinch rollers 72 by controlling the rotation speed of the pinch motor 71, so as to adjust the conveying speed of the first color printing film 61 or the second color printing film 81; after the machine is stopped, the two lifting cylinders 75 can simultaneously drive the two lifting seats 74 to respectively ascend or descend along the corresponding lifting guide rails 73 to drive the corresponding pinch rollers 72 to move towards or back to the other pinch roller 72, so that the two pinch rollers 72 can press or loosen the first color printing film 61 or the second color printing film 81, and the film penetrating operation is facilitated.

In this embodiment, a plurality of first guide rollers 17 are arranged between the substrate layer unwinding device and the finished product winding device, and are used for guiding the trend of the substrate layer 21 and keeping the substrate layer 21 at a certain tension, which is beneficial to ensuring the laminating quality of the first laminating device 3 and the second laminating device 4 on the substrate layer 21; a plurality of second guide rollers 18 are arranged between the second color printing film unwinding device 8 and the second pinch device 9 and used for guiding the trend of the second color printing film 81 and keeping the second color printing film 81 at a certain tension, so that the shooting effect of the second vision camera 13 on the second color printing film 81 is favorably ensured.

The working principle of the double-sided laminating machine is briefly described as follows:

when the device works, the substrate layer 21 sent out by the substrate layer unreeling device passes through the first laminating device 3, the front part of the lens of the first vision camera 12 and the second laminating device 4 in sequence under the driving of the first laminating device 3, the second laminating device 4 and the finished product reeling device; when the substrate layer 21 passes through the first laminating device 3, the substrate layer 21 enters between the cooling roller 31 and the laminating roller 32 of the first laminating device 3, meanwhile, the first color printing film 61 sent out by the first color printing film unreeling device 6 enters between the cooling roller 31 and the laminating roller 32 of the first laminating device 3 and is positioned on the front side of the substrate layer 21 under the driving of the first pinch device 7, meanwhile, the first hot melt film extruded by the extrusion die head 101 of the first hot melt film extrusion device 10 enters between the cooling roller 31 and the laminating roller 32 of the first laminating device 3 and is positioned between the substrate layer 21 and the first color printing film 61 (the first hot melt film is firstly cooled and shaped on the cooling roller 31 and then enters into a gap between the cooling roller 31 and the laminating roller 32), and because the first hot melt film has a certain temperature, the substrate layer 21 and the first color printing film 61 entering into the first laminating device 3 are smoothly laminated together through the first hot melt film under the combined action of the cooling roller 31 and the laminating roller 32, and the first color printing film 61 is smoothly laminated on the front side of the substrate layer 21; when the substrate layer 21 coated with the first color printing film 61 passes through the front of the lens of the first vision camera 12, the first vision camera 12 shoots the patterns on the surface of the passing first color printing film 61 and sends the patterns to the control device 14 for processing; when the substrate layer 21 coated with the first color printing film 61 passes through the second laminating device 4, the substrate layer 21 enters between the cooling roller 31 and the laminating roller 32 of the second laminating device 4, meanwhile, the second color printing film 81 sent out by the second color printing film unreeling device 8 enters between the cooling roller 31 and the laminating roller 32 of the second laminating device 4 and is positioned at the rear side of the substrate layer 21 under the driving of the second pinch device 9, meanwhile, the second hot melt film extruded by the extrusion die head 111 of the second hot melt film extruding device 11 enters between the cooling roller 31 and the laminating roller 32 of the second laminating device 4 and is positioned between the substrate layer 21 and the second color printing film 81 (the second hot melt film is firstly cooled and shaped on the cooling roller 31 of the second laminating device 4 and then enters into a gap between the cooling roller 31 and the laminating roller 32), and because the first hot melt film has a certain temperature, the first hot melt film 21 entering into the first laminating device 3 and the first color printing film 61 are smoothly coated together through the first hot melt film under the combined action of the cooling roller 31 and the laminating roller 32, and the second color printing film 81 is coated on the second laminating side after the second color printing film 21 is coated; and finally, winding the prepared laminated product by a finished product winding device. In the working process, the control device 14 shoots the patterns on the surface of the first color printing film 61 between the first pressing device 3 and the second pressing device 4 through the first vision camera 12, shoots the patterns on the surface of the second color printing film 81 between the second color printing film unreeling device 8 and the second clamping device 9 through the second vision camera 13, compares and analyzes the patterns on the surface of the first color printing film 61 and the patterns on the surface of the second color printing film 81, and then adjusts the conveying speeds of the first clamping device 7 and the second clamping device 9 for the first color printing film 61 and the second color printing film 81 according to the results, so as to realize automatic registration of double-sided patterns, and enable the offset of the patterns of the first color printing film 61 and the second color printing film 81 which are covered on two sides of the base material layer 21 in the front-back direction to be within an allowable range.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A double-sided film laminating machine capable of automatically registering comprises a rack, a substrate layer unwinding device, a first laminating device, a second laminating device, a finished product winding device, a first color printing film unwinding device, a first clamping and conveying device, a second color printing film unwinding device, a second clamping and conveying device, a first hot melt film extruding device and a second hot melt film extruding device, wherein the substrate layer unwinding device, the first laminating device, the second laminating device, the finished product winding device, the first color printing film unwinding device, the first clamping and conveying device, the second color printing film unwinding device, the second clamping and conveying device, the first hot melt film extruding device and the second hot melt film extruding device are all arranged on the rack; the substrate layer unreeling device, the first laminating device, the second laminating device and the finished product reeling device are sequentially arranged along the conveying direction of the substrate layer; the first color printing film unwinding device, the first clamping and conveying device and the first pressing device are sequentially arranged along the conveying direction of the first color printing film; the second color printing film unwinding device, the second clamping and conveying device and the second pressing device are sequentially arranged along the conveying direction of the second color printing film; the first pressing device and the second pressing device respectively comprise a cooling roller and a pressing roller which are pressed with each other and rotate relatively, the extrusion die head of the first hot melt film extrusion device is positioned above the space between the cooling roller and the pressing roller of the first pressing device, and the extrusion die head of the second hot melt film extrusion device is positioned above the space between the cooling roller and the pressing roller of the second pressing device; the method is characterized in that: the double-sided film laminating machine further comprises a control device, a first visual camera and a second visual camera; the first vision camera is arranged between the first laminating device and the second laminating device along the conveying direction of the base material layer, and a lens of the first vision camera faces the surface of the first color printing film; the second vision camera is arranged between the second color printing film unwinding device and the second clamping and conveying device along the conveying direction of the second color printing film, and a lens of the second vision camera faces the surface of the second color printing film; the first vision camera and the second vision camera are respectively and electrically connected with corresponding input ends of the control device, and the first clamping and conveying device and the second clamping and conveying device are respectively and electrically connected with corresponding output ends of the control device.

2. An automatic registering double-sided film laminating machine according to claim 1, characterized in that: the double-sided laminating machine further comprises a first light barrier, the first light barrier is installed on the rack and located between the first pressing device and the second pressing device, the first vision camera and the first light barrier are located on two sides of the base material layer respectively, and the first light barrier is opposite to a lens of the first vision camera.

3. The automatic registering double-sided laminating machine according to claim 1, characterized in that: the double-sided laminating machine further comprises a second light blocking plate, the second light blocking plate is installed on the machine frame and located between the second color printing film unwinding device and the second clamping and conveying device, the second light blocking plate and the second vision camera are located on two sides of the second color printing film respectively, and the second light blocking plate is over against a lens of the second vision camera.

4. An automatic registering double-sided film laminating machine according to claim 1, characterized in that: the cooling roller is rotatably arranged on the frame; the first pressing device and the second pressing device both further comprise a swing frame and a swing air cylinder, the middle of the swing frame is hinged to the rack, the pressing roller is rotatably mounted on the upper portion of the swing frame and located on one side of the cooling roller, a cylinder body of the swing air cylinder is mounted on the rack, and a piston rod of the swing air cylinder is hinged to the lower portion of the swing frame.

5. An automatic registering double-sided laminating machine according to claim 1 or 4, characterized in that: the pressing roller is a rubber roller.

6. An automatic registering double-sided laminating machine according to any one of claims 1-4, characterized in that: the first pinch device and the second pinch device respectively comprise a pinch motor and two pinch rollers; the two pinch rollers are pressed mutually and rotate relatively; the pinch motor is arranged on the rack, an output shaft of the pinch motor is in transmission connection with one of the pinch rollers, and the pinch motor is electrically connected with the corresponding output end of the control device.

7. An automatic registering double-sided film laminating machine according to claim 6, characterized in that: the first clamping and conveying device and the second clamping and conveying device respectively comprise two lifting guide rails, two lifting seats and two lifting mechanisms, the two lifting guide rails are installed on the rack and move up and down, the two lifting seats correspond to the two lifting guide rails one by one, and the lifting seats are installed on the lifting guide rails and are in sliding fit with the lifting guide rails; the two lifting mechanisms correspond to the two lifting seats one by one, the lifting mechanisms are arranged on the rack, and the power output ends of the lifting mechanisms are connected with the lifting seats; the two pinch rolls are arranged side by side up and down, the pinch roll at the lower side is rotatably arranged on the rack and is in transmission connection with an output shaft of the pinch motor, and two ends of the pinch roll at the upper side are rotatably connected with the two lifting seats.

8. An automatic registering double-sided film laminating machine according to claim 7, characterized in that: the lifting mechanism comprises a lifting cylinder, a cylinder body of the lifting cylinder is installed on the rack, and a piston rod of the lifting cylinder faces downwards and is connected with the corresponding lifting seat.