Film laminating machine

Abstract

The utility model relates to a film laminating machine. The film laminating machine comprises a feeding module, a pressing module and a discharging module, the feeding module comprises a first conveying belt and a humidity adjusting assembly installed on the first conveying belt. The humidity adjusting assembly is used for adjusting the humidity distribution uniformity of the paper. The pressing module comprises a rack, and a material roller, a first driving compression roller and a first driven compression roller which are respectively mounted on the rack; the first driving compression roller is of a hot roller structure. And the first driving compression roller and the first driven compression roller jointly form a hot roller pressing structure. The discharging module comprises a second conveying belt adjacent to the rack and a drying assembly installed on the second conveying belt. And the drying assembly is used for drying the laminated paper. According to the water-based laminating adhesive, the humidity is adjusted when paper is fed so as to adjust the humidity distribution uniformity of the paper, and after the paper is laminated, the paper is dried, so that the water-based laminating adhesive is fully bonded with the paper, the generation of bubbles is reduced, and the purpose of improving the product yield is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a laminating machine. Background Art

[0002] In the printing industry, especially in the production process of color-printed packaging products, it is often necessary to laminate the printed paper. Laminating can not only protect the surface, but also improve the toughness of the paper. At present, based on environmental protection and safety considerations, most manufacturers use pre-coated plastic films, and the pre-coated glue on the plastic film is also water-based laminating glue. Water-based laminating glue is a white emulsion adhesive composed of water as a dispersant and a high molecular polymer as a dispersed phase. It does not contain any organic solvents, and the residual organic monomer is less than 0.1%. It smells odorless or has a slight aroma of alcohol or ester. Moreover, the solid content of water-based laminating glue is about 1 times higher than that of oil-based glue, and it is wet laminating. After laminating, the glue is first dried and transparent by the absorption and emission of water by the paper fibers, and firmly bonded to the plastic film.

[0003] The disadvantages of traditional laminating machines are: water-based laminating adhesive is very sensitive to the moisture content of paper, and before laminating, most of the paper is stored in a stacked manner, which makes the edge area of ​​the paper more susceptible to moisture absorption, while the center area is relatively dry, which is reflected in the humidity of the edge area of ​​the paper being greater than that of the center area, causing the edge area of ​​the paper to be prone to wrinkles, forming the so-called ruffles. After laminating, bubbles will remain at the ruffles, resulting in poor product quality. In addition, the temperature requirement for pressing and drying water-based laminating adhesive is 70℃~80℃, while traditional laminating machines are only equipped with hot roller pressing and no drying process, that is, the paper enters natural cooling after the hot pressing and laminating is completed, which is not conducive to the full adhesion of water-based laminating adhesive and paper. It is easy to bubble after laminating, which is also one of the reasons for poor product quality. Utility Model Content

[0004] Based on this, the utility model provides a laminating machine, which performs humidity adjustment when paper is fed in to adjust the uniformity of moisture distribution of the paper, and after the paper is laminarized, dries the paper so that the water-based laminating glue is fully bonded to the paper, reducing the generation of bubbles and achieving the purpose of improving product yield.

[0005] A laminating machine, comprising:

[0006] Feeding module; the feeding module comprises: a first conveyor belt and a humidity regulating assembly mounted on the first conveyor belt; the first conveyor belt is used to carry the paper to be coated; the humidity regulating assembly is used to adjust the uniformity of humidity distribution of the paper;

[0007] The laminating module for the feeding module; the laminating module includes: a frame adjacent to the first conveyor belt, and a material roller, a first driving pressing roller, and a first driven pressing roller respectively installed on the frame; the material roller is used to carry the film roll; the first driving pressing roller is of a hot roller structure; the first driving pressing roller and the first driven pressing roller together constitute a hot roller pressing structure for pressing the paper and the plastic film together; and

[0008] The discharging module for the feeding module; the discharging module includes: a second conveyor belt adjacent to the frame and a drying component installed on the second conveyor belt; the second conveyor belt is used to receive the paper after laminating; the drying component is used to dry the paper after laminating.

[0009] In the above laminating machine, during operation, the paper to be laminated is input through the first conveyor belt and the humidity distribution of the paper is adjusted by the humidity adjustment component to improve the humidity uniformity of the paper. Then, the paper enters the frame and undergoes hot roller pressing treatment through the first driving pressing roller and the first driven pressing roller, so that the paper and the plastic film are pressed together. Then, the paper after laminating enters the second conveyor belt for output and is dried by the drying component. Through the above design, the humidity of the paper is adjusted during feeding to adjust the humidity distribution uniformity of the paper, and after the paper is laminated, the paper is dried, so that the water-based laminating adhesive is fully bonded to the paper, reducing the generation of bubbles and achieving the purpose of improving the product yield.

[0010] In one embodiment, the humidity adjustment component includes: a first shield erected on the first conveyor belt, and a heater and a humidifier respectively installed inside the first shield. The first shield is used to internally protect the heater and the humidifier and improve the safety of the operation. The heater is used to adjust the humidity by drying, while the humidifier is used to adjust the humidity by humidifying.

[0011] In one embodiment, the heater includes: a plurality of first infrared heat pipes distributed in an array. The paper is dried by the heat radiation of the infrared heat pipes, and the heating uniformity is good and the safety is good.

[0012] In one embodiment, the laminating module further includes: a tensioning roller installed on the frame; the tensioning roller is arranged between the material roller and the first driving pressing roller; the tensioning roller is used to adjust the tightness of the film roll feeding. The tensioning roller can adjust the winding tension of the material roller and reduce the risk of bubbles and deformation on the paper after laminating.

[0013] In one embodiment, the laminating module further includes: a second driving pressing roller and a second driven pressing roller adjacent to the first driving pressing roller; the second driving pressing roller and the second driven pressing roller are used to perform secondary pressing on the paper after laminating. The secondary pressing can improve the adhesion between the plastic film and the paper and improve the laminating effect.

[0014] In one embodiment, the second active pressure roller has a hot roller structure. Secondary heat pipe pressing is adopted to further improve the film laminating effect.

[0015] In one embodiment, the pressing module further includes: a vision detection component mounted on the frame and a cutting component connected to the vision detection component; the cutting component is located between the second conveyor belt and the first active pressure roller; the vision detection component is used to determine the position of the plastic film between two adjacent sheets with film laminated thereon to send a cutting electrical signal to the cutting component; the cutting component is used to cut off the plastic film between two adjacent sheets with film laminated thereon. By using image analysis technology, the vision detection component captures the position of the plastic film between two adjacent sheets with film laminated thereon, and the cutting component quickly completes the cutting and separation.

[0016] In one embodiment, the drying component includes: a plurality of second infrared heat pipes distributed in an array. The paper is dried by the heat radiation of the infrared heat pipes, with better heating uniformity and good safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of a film laminating machine according to an embodiment of the present invention;

[0018] Figure 2 is Figure 1 A perspective view of the film laminating machine shown from another angle;

[0019] Figure 3 is Figure 1 A cross-sectional view of the film laminating machine shown;

[0020] Figure 4 is Figure 1 A perspective view of the pressing module of the film laminating machine shown;

[0021] Figure 5 is Figure 4 A perspective view of the pressing module shown from another angle;

[0022] Figure 6 is Figure 4 A perspective view of the adjustable elastic lifting seat in the pressing module shown;

[0023] Figure 7 is Figure 1 A perspective view of the feeding module in the film laminating machine shown;

[0024] Figure 8 is Figure 7 A perspective view of the humidity adjustment component in the feeding module shown;

[0025] Figure 9 isFigure 1 Working principle diagram of the film laminating machine shown

[0026] The meanings of the reference numerals in the accompanying drawings are as follows

[0027] 100 - Film laminating machine

[0028] 10 - In - feeding module, 11 - First conveyor belt, 12 - Humidity adjustment component, 121 - First shield, 122 - Heater

[0029] 20 - Pressing module, 21 - Frame, 22 - Material roller, 221 - First driving pressing roller, 222 - First driven pressing roller, 23 - Tensioning roller, 24 - Adjustable elastic lifting seat, 241 - Slide seat, 242 - Adjusting screw, 243 - Spring, 25 - Second driving pressing roller, 26 - Second driven pressing roller, 27 - Vision detection component, 271 - Camera, 28 - Cutting component, 281 - Cutting driver, 282 - Electric heating cutter

[0030] 30 - Out - feeding module, 31 - Second conveyor belt, 32 - Drying component Specific embodiments

[0031] In order to make the above - mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model is given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0036] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0037] As Figures 1 to 9 shown, it is a film laminating machine 100 of an embodiment of the present utility model.

[0038] As Figure 1 and Figure 2As shown, the laminating machine 100 includes: a feeding module 10, a laminating module 20, and a discharging module 30 arranged in sequence. Among them, the feeding module 10 is used to receive the paper to be laminated and perform humidity adjustment treatment on the paper before laminating to improve the humidity uniformity of the paper. The laminating module 20 is used to thermally laminate the paper to be laminated and the plastic film together to complete the laminating process. The discharging module 30 is used to output the laminated paper and perform drying treatment to enhance the adhesion between the water-based laminating adhesive and the paper.

[0039] Below, in combination with Figures 1 to 9 , the above-mentioned laminating machine 100 will be further described.

[0040] As Figure 1 , Figure 3 , Figure 7 , and Figure 8 As shown, the feeding module 10 includes: a first conveyor belt 11 and a humidity adjustment component 12 installed on the first conveyor belt 11. Among them, the first conveyor belt 11 is used to carry the paper to be laminated. The humidity adjustment component 12 is used to adjust the humidity distribution uniformity of the paper.

[0041] Generally, there are two ways of humidity adjustment. The first is to promote water evaporation by heating, and the second is to adjust the water distribution by humidification. Each of the two humidity adjustment methods has its own advantages. Therefore, in this embodiment, the two different heating methods are integrated together to improve the flexibility of use.

[0042] For example, as Figure 7 shown, in this embodiment, the humidity adjustment component 12 includes: a first shield 121 erected on the first conveyor belt 11, and a heater 122 and a humidifier (not shown in the figure) respectively installed inside the first shield. The first shield 121 is used to internally protect the heater 122 and the humidifier and improve the safety of the operation. The heater 122 is used to adjust the humidity by drying, while the humidifier is used to adjust the humidity by humidification.

[0043] Furthermore, as Figure 8 shown, in this embodiment, the heater 122 includes: a plurality of first infrared heat pipes distributed in an array. The paper is dried by the heat radiation of the infrared heat pipes, and the heating uniformity is good and the safety is good. It can be understood that in other embodiments, the heater 122 can also be a heat copper tube structure.

[0044] As Figures 3 to 5As shown in the figure, the laminating module 20 includes: a frame 21 disposed adjacent to the first conveyor belt 11, and a material roll 22, a first driving pressure roller 221, and a first driven pressure roller 222 respectively mounted on the frame 21. Among them, the material roll 22 is used to carry the film roll. The first driving pressure roller 221 is a hot roller structure. The first driving pressure roller 221 and the first driven pressure roller 222 together form a hot roller laminating structure for laminating paper and plastic film together. During operation, the paper and the plastic film enter between the first driving pressure roller 221 and the first driven pressure roller 222 and are laminated together.

[0045] As Figure 3 and Figure 4 shown in the figure, the laminating module 20 may further include: a tension roller 23 mounted on the frame 21. The tension roller 23 is disposed between the material roll 22 and the first driving pressure roller 221. The tension roller 23 is used to adjust the tightness of the film roll feeding. The tension roller 23 can adjust the winding tension of the material roll 22, reducing the risk of bubbles and deformation on the paper after film coating.

[0046] It should be noted that considering the market demand for paper film coating, there are requirements for single-sided film coating and double-sided film coating. Therefore, in order to meet the different customer needs, in this embodiment, the film coating machine 100 is a double-sided film coating device. For example, in this embodiment, the material roll 22 includes: a loading roll 22 and an unloading roll 22. Among them, the loading roll 22 is used to load the top surface film roll, and the unloading roll 22 is used to load the bottom surface film roll. Correspondingly, the tension roller 23 also includes: an upper tension roller and a lower tension roller.

[0047] In addition, in this embodiment, in order to facilitate the operator to adjust the tightness of the plastic film according to the actual situation of the plastic film and paper used, in this embodiment, both ends of the loading roll and the unloading roll are provided with adjustable elastic lifting seats 24. As Figure 6 shown in the figure, the adjustable elastic lifting seat 24 includes: a sliding seat 241, an adjusting screw 242 passing through the sliding seat 241, and a spring 243 sleeved on the adjusting screw 242. One end of the spring 243 abuts against the sliding seat 241, and the other end abuts against the head of the adjusting screw 242.

[0048] As Figure 3 and Figure 4 shown in the figure, the laminating module 20 may further include: a second driving pressure roller 25 and a second driven pressure roller 26 disposed adjacent to the first driving pressure roller 221. The second driving pressure roller 25 and the second driven pressure roller 26 are used for secondary lamination of the paper after film coating. Secondary lamination can improve the adhesion between the plastic film and the paper and improve the film coating effect.

[0049] Furthermore, the second driving pressure roller 25 is a hot roller structure. By adopting secondary hot tube lamination, the film coating effect can be further improved.

[0050] In addition, in this embodiment, adjustable elastic lifting seats 24 can also be provided at both ends of the first driven pressure roller 222 and the second driven pressure roller 26, so as to control the magnitude of the pressure on the paper.

[0051] As Figure 3 and Figure 5 shown, in this embodiment, the lamination module 20 may further include: a visual detection component 27 installed on the frame 21 and a cutting component 28 connected to the visual detection component 27. The cutting component 28 is located between the second conveyor belt 31 and the first driving pressure roller 221. The visual detection component 27 is used to determine the position of the plastic film between two adjacent sheets of paper after lamination and send a cutting electrical signal to the cutting component 28. The cutting component 28 is used to cut the plastic film between two adjacent sheets of paper after lamination. By using image analysis technology, the position of the plastic film between two adjacent sheets of paper after lamination is captured by the visual detection component 27, and the cutting and separation are quickly completed by using the cutting component 28.

[0052] In this embodiment, the visual detection component 27 includes: a camera 271 installed on the frame 21 and a controller (not shown in the figure) connected to the camera 271, and the controller is electrically connected to the cutting component 28. The cutting component 28 includes: a cutting driver 281 installed on the frame 21 and a hot wire cutter 282 connected to the driver. When the cutting driver 281 receives the cutting electrical signal from the controller, it controls the hot wire cutter 282 to act to quickly cut the plastic film between two adjacent sheets of paper after lamination, realizing automatic film cutting.

[0053] As Figure 2 and Figure 3 shown, the discharging module 30 includes: a second conveyor belt 31 arranged adjacent to the frame 21 and a drying component 32 installed on the second conveyor belt 31. Among them, the second conveyor belt 31 is used to receive the sheets of paper after lamination. The drying component 32 is used to perform drying treatment on the sheets of paper after lamination.

[0054] In this embodiment, the structure of the drying component 32 is similar to the structure of the above-mentioned heater 122, that is, the drying component 32 includes: a plurality of second infrared heat pipes distributed in an array. The paper is dried by the heat radiation of the infrared heat pipes, and the heating uniformity is good and the safety is good.

[0055] Brief description of the working principle:

[0056] As Figure 9As shown, during operation, the paper to be laminated is input through the first conveyor belt 11 and the humidity distribution of the paper is adjusted via the humidity adjustment component 12 to improve the humidity uniformity of the paper. Next, the paper enters the frame 21, and the paper and the plastic film are subjected to hot roll laminating treatment by the first driving roller 221 and the first driven roller 222, so that the paper and the plastic film are laminated together. Then, the laminated paper enters the second conveyor belt 31 for output and is dried via the drying component 32. It should be noted that the laminating machine 100 of this solution can not only complete hot lamination (hot film lamination), but also complete cold lamination (cold film lamination). When cold lamination is required, the heating functions of the above-mentioned hot roll structures are all turned off.

[0057] For the above-mentioned laminating machine 100, the humidity of the paper is adjusted during paper feeding to adjust the humidity distribution uniformity of the paper. Moreover, after the paper is laminated, the paper is dried to enable the water-based laminating adhesive to fully adhere to the paper, reduce the generation of bubbles, and achieve the purpose of improving the product yield.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0059] The above embodiments only represent the preferred implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A laminating machine, characterized in that: include: Feeding module; The feeding module comprises: a first conveyor belt and a humidity regulating component installed on the first conveyor belt; the first conveyor belt is used to carry the paper to be coated; the humidity regulating component is used to adjust the uniformity of humidity distribution of the paper; a pressing module connected to the feeding module; the pressing module comprises: a frame arranged adjacent to the first conveyor belt, and a material roller, a first active pressing roller, and a first driven pressing roller respectively installed on the frame; the material roller is used to carry a film roll; the first active pressing roller is a hot roller structure; the first active pressing roller and the first driven pressing roller together constitute a hot roller pressing structure for pressing paper and plastic film together; and A discharging module docked with the feeding module; the discharging module comprises: a second conveyor belt arranged adjacent to the frame and a drying component installed on the second conveyor belt; the second conveyor belt is used to receive the laminated paper; the drying component is used to dry the laminated paper.

2. The laminating machine according to claim 1, characterized in that: The humidity regulating assembly comprises: a first protective cover mounted on the first conveyor belt, and a heater and a humidifier respectively installed in the first protective cover.

3. The laminating machine according to claim 2, characterized in that: The heater comprises: a plurality of first infrared heat pipes distributed in an array.

4. The laminating machine according to claim 1, characterized in that: The pressing module also includes: a tension roller installed on the frame; the tension roller is arranged between the material roller and the first active pressure roller; the tension roller is used to adjust the tightness of the film material roll unwinding.

5. The laminating machine according to claim 1, characterized in that: The lamination module further includes: a second active pressing roller and a second driven pressing roller disposed adjacent to the first active pressing roller; the second active pressing roller and the second driven pressing roller are used for performing secondary lamination on the laminated paper.

6. The laminating machine according to claim 5, characterized in that: The second active pressure roller is a hot roller structure.

7. The laminating machine according to claim 1, characterized in that: The pressing module also includes: a visual detection component installed on the frame and a cutting component connected to the visual detection component; the cutting component is located between the second conveyor belt and the first active pressure roller; the visual detection component is used to determine the position of the plastic film between two adjacent laminated papers to send a cutting electrical signal to the cutting component; the cutting component is used to cut the plastic film between two adjacent laminated papers.

8. The laminating machine according to claim 1, characterized in that: The drying component includes: a plurality of second infrared heat pipes distributed in an array.

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