Film covering device

Abstract

The film laminating device comprises an automatic film laminating machine and a hot air assembly, the automatic film laminating machine comprises a protective cover, a feeding port and a discharging port are formed in the two opposite sides of the protective cover respectively, a heat conduction pipe and a supporting rod are arranged on the opposite sides of the feeding port and the discharging port respectively, and the heat conduction pipe and the supporting rod are both fixedly connected with the inner wall of the protective cover; the protective cover is provided with a through hole, the through hole is fixedly communicated with a guide pipe facing the supporting rod, the hot air assembly is communicated with one end of the heat conduction pipe, the other end of the heat conduction pipe is communicated with the through hole, and the hot air assembly, the heat conduction pipe and the through hole are arranged in series to form a structure for heating the label twice before and after film coating; and after the film is preheated by the hot air, the label laminated on the supporting rod can be dried, so that the utilization rate of the hot air is effectively improved, meanwhile, the adhesion between the film and the label is enhanced, and the laminating effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and specifically to a coating device. Background Technology

[0002] During label production, a digital printing machine first prints the pattern on the label. Then, workers transport the rolled-up printed labels to a laminating machine. By laminating the labels, the protective properties of the pattern on the label are improved. For example, the utility model patent with authorization announcement number CN208263720U, entitled "A High-Efficiency Defoaming Laminating Device for a Label Printing Machine," includes a main body, a mounting frame, and a control box. A first roller is movably mounted on the upper right side surface of the main body. A first rotating shaft and a heating shaft are fixedly mounted on one side of the top inner wall of the main body. A laminating roller and a pressing roller are movably mounted on the inner wall of the main body through a partition. A flexible brush is fixedly mounted on the surface of the pressing roller. A second roller and a third roller are movably mounted sequentially on the left and right ends of the mounting frame. A second rotating shaft is movably mounted on the inner side of the mounting frame. A motor is fixedly mounted on the bottom surface of the mounting frame. A heating shaft is movably mounted on the inner wall of the main body, and the electric heating wire is controlled by the control box to preheat the film and reduce the generation of air bubbles during the laminating operation.

[0003] However, the aforementioned high-efficiency defoaming and coating device cannot dry the coated labels, resulting in low adhesion between the labels and the film and poor coating effect. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a coating device to solve the technical problem that the existing technology cannot dry the coated labels, resulting in low adhesion between the labels and the film and poor coating effect.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a film coating device, including an automatic film coating machine and a hot air assembly. The automatic film coating machine includes a protective cover, with an inlet and an outlet respectively opened on opposite sides of the protective cover. A heat-conducting pipe and a support rod are respectively provided on the side opposite to the inlet and the outlet, and the heat-conducting pipe and the support rod are fixedly connected to the inner wall of the protective cover. The protective cover has a through hole, and a guide pipe facing the support rod is fixedly connected to the through hole. The hot air assembly is connected to one end of the heat-conducting pipe, and the other end of the heat-conducting pipe is connected to the through hole.

[0007] In some embodiments, the automatic laminating machine further includes a film roller, a material roller, a pair of laminating rollers and a take-up roller. The film roller and the material roller are installed at the feed inlet. The two laminating rollers are arranged adjacent to each other and rotatably connected inside the protective cover. The take-up roller is installed at the discharge outlet.

[0008] In some embodiments, the automatic laminating machine further includes a first motor and a second motor, the first motor being connected to the laminating roller and used to drive the laminating roller to rotate, and the second motor being connected to the take-up roller and used to drive the take-up roller to rotate.

[0009] In some embodiments, the hot air assembly includes a fan, an electric heating box, a first connecting pipe, and a second connecting pipe. The fan is connected adjacent to the electric heating box. One end of the first connecting pipe is connected to the electric heating box, and the other end of the first connecting pipe is connected to one end of the heat-conducting pipe. One end of the second connecting pipe is connected to the other end of the heat-conducting pipe, and the other end of the second connecting pipe is connected to the through hole.

[0010] In some embodiments, a shunt pipe is connected between the second connecting pipe and the through hole.

[0011] In some embodiments, a control panel is mounted on the outer surface of the protective cover.

[0012] In some embodiments, the end of the guide tube facing the support rod is funnel-shaped.

[0013] In some embodiments, a repressing component is further included, the repressing component being installed at the discharge port, and the bottom end of the repressing component being abutted against the bottom end of the discharge port.

[0014] In some embodiments, the repressing assembly includes a repressing plate and a repressing roller. The repressing roller is rotatably connected to the bottom end of the repressing plate. Slide grooves are provided on both sides of the discharge port. Protrusions are fixedly connected to both sides of the repressing plate. The two protrusions are slidably embedded in the two slide grooves. The repressing roller is in contact with the bottom end of the discharge port.

[0015] In some embodiments, the bottom end of the discharge port is arc-shaped.

[0016] Compared with the prior art, the coating device provided by this utility model forms a two-stage heating structure for the label before and after coating by connecting the hot air assembly, the heat conduction pipe and the through hole in series. Then, by setting up the support rod and the guide tube, the hot air preheats the film and dries the coated label on the support rod, which effectively improves the utilization rate of the hot air. At the same time, it also strengthens the adhesion between the film and the label and improves the coating effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of a coating device provided in an embodiment of this utility model;

[0018] Figure 2 yes Figure 1 Top view;

[0019] Figure 3 yes Figure 2 Sectional view of AA.

[0020] Explanation of reference numerals in the attached drawings: 1. Automatic laminating machine; 11. Protective cover; 111. Feed inlet; 112. Discharge outlet; 113. Through hole; 114. Guide tube; 115. Control panel; 116. Slide groove; 12. Heat conduction pipe; 13. Support rod; 14. Film roller; 15. Material roller; 16. Laminating roller; 17. Rewinding roller; 18. First motor; 19. Second motor; 2. Hot air assembly; 21. Fan; 22. Heating box; 23. First connecting pipe; 24. Second connecting pipe; 25. Diverter pipe; 3. Repressing assembly; 31. Repressing plate; 311. Raised strip; 32. Repressing roller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0022] To address the technical problem of poor adhesion between labels and film and poor coating effect caused by labels not being dried after lamination, this utility model provides a lamination device that can improve the lamination effect.

[0023] It should be noted that the coating device described in this utility model is used for, but not limited to, labels, etc. For ease of explanation, this utility model only uses the application of a coating device to labels as an example for explanation. The principle of applying a coating device to other types of equipment is essentially the same as the principle of applying it to labels, and will not be described in detail here.

[0024] Please see Figure 1 - Figure 3 ,in Figure 1 This is a schematic diagram of a coating device according to an embodiment of the present invention. The coating device includes an automatic coating machine 1 and a hot air assembly 2. The automatic coating machine 1 includes a protective cover 11. The protective cover 11 has an inlet 111 and an outlet 112 on opposite sides. A heat-conducting pipe 12 and a support rod 13 are respectively provided on the opposite side of the inlet 111 and the outlet 112. The heat-conducting pipe 12 and the support rod 13 are fixedly connected to the inner wall of the protective cover 11. The protective cover 11 has a through hole 113. The through hole 113 is fixedly connected to a guide pipe 114 facing the support rod 13. The hot air assembly 2 is connected to one end of the heat-conducting pipe 12, and the other end of the heat-conducting pipe 12 is connected to the through hole 113.

[0025] In this embodiment, the series connection of the hot air assembly 2, the heat pipe 12, and the through hole 113 forms a two-stage heating structure for the label before and after lamination. The support rod 13 and the guide tube 114 allow the hot air to preheat the film and then dry the laminated label on the support rod 13, effectively improving the utilization rate of the hot air. At the same time, it also strengthens the adhesion between the film and the label, improving the lamination effect.

[0026] Furthermore, a support frame is fixedly installed on the bottom surface of the protective cover 11 to increase the height of the protective cover 11 and facilitate operation by staff.

[0027] In one embodiment, the automatic laminating machine 1 further includes a film roller 14, a material roller 15, a pair of laminating rollers 16 and a take-up roller 17. The film roller 14 and the material roller 15 are installed at the feed inlet 111. The two laminating rollers 16 are arranged adjacent to each other and rotatably connected inside the protective cover 11. The take-up roller 17 is installed at the discharge outlet 112.

[0028] In this embodiment, the film roller 14 is used to install the film. The film roller 14 is located at the feed port 111 and is detachably connected to the protective cover 11 for easy film replacement. The material roller 15 is used to install the label to be coated. The material roller 15 is also located at the feed port 111 and is detachably connected to the protective cover 11 for easy material roller replacement. The two coating rollers 16 complete the coating work by squeezing the film and the label. The take-up roller 17 is located at the discharge port 112 and is detachably connected to the protective cover 11 for easy recycling of the coated label.

[0029] In one embodiment, the automatic laminating machine 1 further includes a first motor 18 and a second motor 19. The first motor 18 is connected to the laminating roller 16 and is used to drive the laminating roller 16 to rotate. The second motor 19 is connected to the take-up roller 17 and is used to drive the take-up roller 17 to rotate.

[0030] In this embodiment, both the first motor 18 and the second motor 19 are servo motors. Under the action of the second motor 19, the laminated label is always in a taut state, which makes it easier for the take-up roller 17 to recycle more evenly. At the same time, the first motor 18 and the second motor 19 are electrically connected to the control panel 115 on the PLC computer. Through the automatic control of the PLC computer, the first motor 18 and the second motor 19 do not interfere with each other during operation, avoiding the large difference in speed between the first motor 18 and the second motor 19, which would cause the film, label or laminated label to be pulled apart or not taut.

[0031] Furthermore, servo motors can also be installed on the film roller 14 and the material roller 15 to improve the smoothness of the lamination process. The automatic laminating machine 1 is existing equipment in the art, and those skilled in the art are aware of its principles, so it will not be described in detail.

[0032] In one embodiment, the hot air assembly 2 includes a fan 21, an electric heating box 22, a first connecting pipe 23 and a second connecting pipe 24. The fan 21 is connected adjacent to the electric heating box 22. One end of the first connecting pipe 23 is connected to the electric heating box 22, and the other end of the first connecting pipe 23 is connected to one end of the heat-conducting pipe 12. One end of the second connecting pipe 24 is connected to the other end of the heat-conducting pipe 12, and the other end of the second connecting pipe 24 is connected to the through hole 113.

[0033] In this embodiment, the generation of hot air by the fan 21 and the electric heating box 22 is existing technology in the field, so it will not be described in detail.

[0034] In one embodiment, a diversion pipe 25 is connected between the second connecting pipe 24 and the through hole 113.

[0035] In this embodiment, there are several through holes 113, and each through hole 113 is arranged in parallel on the top surface of the protective cover 11. The diversion pipe 25 allows the hot air guided by the second connecting pipe 24 to enter the protective cover 11 more evenly, so that the label on the support rod 13 after being coated is heated more evenly, thus improving the coating effect.

[0036] Furthermore, the outer surfaces of the first connecting pipe 23, the second connecting pipe 24, and the diversion pipe 25 are all covered with flame-retardant insulation cotton to prevent excessive heat loss caused by hot air in the first connecting pipe 23, the second connecting pipe 24, and the diversion pipe 25.

[0037] In one embodiment, a control panel 115 is mounted on the outer surface of the protective cover 11.

[0038] In this embodiment, the control panel 115 is electrically connected to the first motor 18, the second motor 19, the fan 21, and the electric heating box 22 via a PLC computer, which makes it convenient for the staff to control the operation of each mechanism by operating the control panel 115.

[0039] In one embodiment, the end of the guide tube 114 facing the support rod 13 is funnel-shaped.

[0040] In this embodiment, the hot air is blown more evenly and over a wider area onto the label on the support rod 13 after coating, thereby improving the coating effect.

[0041] In one embodiment, a repressing component 3 is also included, which is installed at the discharge port 112 and the bottom end of the repressing component 3 is in contact with the bottom end of the discharge port 112.

[0042] In one embodiment, the repressing assembly 3 includes a repressing plate 31 and a repressing roller 32. The repressing roller 32 is rotatably connected to the bottom end of the repressing plate 31. Slide grooves 116 are provided on both sides of the discharge port 112. Protrusions 311 are fixedly connected to both sides of the repressing plate 31. The two protrusions 311 are slidably embedded in the two slide grooves 116. The repressing roller 32 is in contact with the bottom end of the discharge port 112.

[0043] In this embodiment, to avoid the re-pressing component 3 being too heavy and causing the coated label to be unable to move smoothly during the secondary extrusion process, both the re-pressing plate 31 and the re-pressing roller 32 are made of flame-retardant lightweight plastic panels. By utilizing the weight of the re-pressing plate 31 and the re-pressing roller 32 themselves, the re-pressing roller 32 is made to fit against the bottom end of the discharge port 112. When the coated label passes between the re-pressing roller 32 and the bottom end of the discharge port 112, the re-pressing component 3 itself is subjected to secondary extrusion under its own weight, thereby further improving the coating effect.

[0044] In one embodiment, the bottom end of the discharge port 112 is arc-shaped.

[0045] In this embodiment, the bottom end of the discharge port 112 is arc-shaped. Preferably, the bottom end of the discharge port 112 has the same diameter as the re-pressure roller 32, so that the label after coating is squeezed more smoothly during the secondary extrusion.

[0046] Furthermore, the bottom end of the discharge port 112 is also equipped with the same roller as the re-pressure roller 32, so that the upper and lower extrusion surfaces of the laminated label can rotate during the secondary extrusion, which further improves the smoothness of the laminated label during the secondary extrusion.

[0047] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0048] First, the label to be coated is mounted on the material roller 15, and the film is mounted on the film roller 14. Then, the hot air assembly 2 is started, and under the action of the fan 21 and the electric heating box 22, hot air passes through the first connecting pipe 23, the heat-conducting pipe 12, the second connecting pipe 24, the diverting pipe 25, the through hole 113, and the guide pipe 114 in sequence before being blown onto the support rod 13. Next, after the heat-conducting pipe 12 reaches the expected temperature, the coating process begins. The first motor 18 and the second motor 19 are started, causing the label and film to move autonomously. The film is preheated by the heat-conducting pipe 12 and then enters between the two coating rollers 16, while the label enters between the two coating rollers 16 and is squeezed once between the two coating rollers 16. Subsequently, the coated label is dried by the support rod 13. Next, the dried label is squeezed a second time by the repress roller 32. Finally, the take-up roller 17 collects the coated label. The whole process effectively improves the utilization rate of hot air and strengthens the adhesion between the film and the label, thus improving the coating effect.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A film coating device characterized by comprising: The application relates to an automatic film covering machine. The automatic film covering machine comprises a protective cover, a feeding port and a discharging port are arranged on opposite sides of the protective cover, a heat conducting pipe and a supporting rod are arranged on the side opposite to the feeding port and the discharging port, the heat conducting pipe and the supporting rod are fixedly connected with the inner wall of the protective cover, a through hole is arranged in the protective cover, and a guide pipe is fixedly connected with the through hole and faces the supporting rod. A hot gas assembly is connected with one end of the heat conducting pipe, and the other end of the heat conducting pipe is connected with the through hole. The automatic film covering machine further comprises a film roller, a material roller, a pair of film covering rollers and a winding roller, the film roller and the material roller are arranged in the feeding port, the film covering rollers are arranged in an upper-lower mode and are rotationally connected in the protective cover, and the winding roller is arranged in the discharging port.

2. The film coating apparatus of claim 1, wherein The automatic film covering machine further comprises a first motor and a second motor, the first motor is connected with the film covering rollers and is used for driving the film covering rollers to rotate, and the second motor is connected with the winding roller and is used for driving the winding roller to rotate.

3. The film coating apparatus of claim 2, wherein The hot gas assembly comprises a fan, an electric heating box, a first connecting pipe and a second connecting pipe, the fan is connected with the electric heating box, one end of the first connecting pipe is connected with the electric heating box, the other end of the first connecting pipe is connected with one end of the heat conducting pipe, one end of the second connecting pipe is connected with the other end of the heat conducting pipe, and the other end of the second connecting pipe is connected with the through hole.

4. The film coating apparatus of claim 1, wherein A shunt pipe is connected between the second connecting pipe and the through hole.

5. The film coating apparatus of claim 4, wherein A control panel is arranged on the outer surface of the protective cover.

6. The film coating apparatus of claim 1, wherein One end of the guide pipe faces the supporting rod and is in a funnel shape.

7. The film coating apparatus of claim 1, wherein A re-pressing assembly is arranged in the discharging port, and the bottom end of the re-pressing assembly is attached to the bottom end of the discharging port.

8. The film coating apparatus of claim 1, wherein The re-pressing assembly comprises a re-pressing plate and a re-pressing roller, the re-pressing roller is rotationally connected with the bottom end of the re-pressing plate, sliding grooves are arranged on opposite sides of the discharging port, protrusions are fixedly connected with opposite sides of the re-pressing plate, the protrusions are slidably arranged in the sliding grooves, and the re-pressing roller is attached to the bottom end of the discharging port.

9. The film coating apparatus of claim 8, wherein, The bottom end of the discharging port is in an arc shape.

10. The film coating apparatus of claim 1, wherein ​

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