Carton surface high-temperature molten film treatment device

Abstract

The utility model relates to the technical field of carton film melting, in particular to a carton surface high-temperature film melting treatment device which comprises a conveying mechanism used for conveying a carton, a first supporting frame is arranged above the conveying mechanism, and a film melting roller used for conducting film melting on the surface of the carton is rotationally connected to the first supporting frame. A first supporting frame is arranged on the conveying mechanism, a second supporting frame is further arranged on the conveying mechanism, the second supporting frame is located on the downstream portion of the first supporting frame, a cooling compression roller with the interior of a hollow structure is arranged in the second supporting frame through an adjusting assembly, and the cooling compression roller is used for cooling the surface of a carton subjected to film melting. When a carton on the conveying mechanism is subjected to surface film melting treatment through the film melting roller, the carton passes through the cooling pressing roller, at the moment, the cooling pressing roller makes contact with the surface of the carton, the surface of the carton can be evenly rolled while the surface of the carton is cooled, and the flatness and smoothness of the surface of a film are improved.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box melt-film technology, and in particular to a high-temperature melt-film treatment device for cardboard box surfaces. Background Technology

[0002] High-temperature melt-coating of cardboard boxes is a technical method for surface processing of cardboard boxes. It mainly involves melting materials such as plastic film at high temperatures and adhering them to the surface of the cardboard box to achieve purposes such as protecting the cardboard box, enhancing its performance, and improving its appearance. It is usually done using specialized equipment, such as a thermal laminator. The plastic film is placed on the surface of the cardboard box, and then heated by heat pipes on the thermal laminator. A certain pressure is also applied to the film, so that the molten film can be tightly adhered to the surface of the cardboard box, forming a whole with the cardboard box. After that, it is cooled to allow the molten film to solidify and set quickly.

[0003] However, the common cooling methods currently used are natural cooling, which allows air to circulate and carry away heat. However, the cooling speed is slow, and the cooling effect is greatly affected by factors such as ambient temperature and wind speed. Another method is to use fans, blowers, and other equipment to blow cold air onto the surface of the item after melting and coating to accelerate airflow and cool it. However, it is difficult to achieve a completely uniform distribution of the airflow on the cardboard box surface. Areas closer to the air outlet or in the direct impact path of the airflow will cool faster, while corners or areas that are difficult for the airflow to reach will cool slower. This will lead to different cooling levels on different parts of the cardboard box surface, generating internal stress. This may cause air marks or flow marks to form on the film covering the cardboard box surface, affecting the flatness and smoothness of the film surface. Based on the above, it is necessary to design a high-temperature melting and coating treatment device for cardboard box surfaces to solve the above problems. Utility Model Content

[0004] This invention provides a high-temperature melting film treatment device for cardboard box surfaces to solve the problem that in the prior art, some corners or areas that are difficult for airflow to reach have a slower cooling rate, which leads to different cooling degrees on different parts of the cardboard box surface, generating internal stress, which may cause air marks or flow marks to form on the film covering the cardboard box surface, affecting the flatness and smoothness of the film surface.

[0005] The technical problem solved by this utility model is achieved by the following technical solution:

[0006] A high-temperature melt-film treatment device for cardboard box surfaces includes a conveying mechanism for conveying cardboard boxes. A support frame 1 is provided above the conveying mechanism. A melt-film roller for melting the cardboard box surface is rotatably connected to the support frame 1. A second support frame is also provided on the conveying mechanism. The second support frame 2 is located downstream of the first support frame. The interior of the second support frame 2 is equipped with a hollow cooling roller through an adjusting component. The cooling roller is used to cool the surface of the cardboard box after melting. The device also includes a cooling mechanism for cooling the surface of the cooling roller, thereby cooling the surface of the cardboard box.

[0007] Preferably, the adjustment assembly includes an adjustment frame rotatably connected to both ends of the cooling roller and an adjustment screw rotatably on the adjustment frame. The adjustment screw is threadedly connected to the support frame 2. The adjustment frame is provided with a guide rod, one end of which passes through the support frame 2 and is slidably connected to the support frame 2.

[0008] Preferably, the cooling mechanism includes a cooling water tank with a cooler inside, a cooling water pipe in contact with the inner wall of the cooling roller, and a water delivery hose connected to both ends of the cooling water pipe. The water delivery hose is connected to the cooling water tank, and a water pump is provided on the water delivery hose.

[0009] Preferably, both ends of the cooling water pipe are provided with rotating connectors, and the water delivery hose is rotatably connected to the rotating connectors.

[0010] Preferably, the cooling water pipe is spiral-shaped and its inner diameter gradually decreases from the middle to both ends.

[0011] Preferably, the conveying mechanism is provided with a support frame three, which is located upstream of the support frame one and is equipped with a hot air blower for preheating the surface of the carton.

[0012] The beneficial effects of this utility model are: the cooling mechanism cools the cooling pressure roller. After the carton undergoes surface melting treatment by the melting roller on the conveying mechanism, it will pass through the cooling pressure roller. At this time, the cooling pressure roller contacts the surface of the carton, and while cooling the surface of the carton, it can also uniformly roll the surface of the carton, thereby improving the flatness and smoothness of the film surface. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1This is a schematic diagram of the isometric structure provided by this utility model;

[0015] Figure 2 Schematic diagram of the cross-sectional structure provided by this utility model Figure 1 ;

[0016] Figure 3 Schematic diagram of the cross-sectional structure provided by this utility model Figure 2 ;

[0017] Figure 4 This is a partial structural schematic diagram of the present invention;

[0018] Figure 5 This utility model Figure 1 A magnified 20v6.0 diagram of A.

[0019] In the diagram, 1. Conveying mechanism; 2. Support frame one; 3. Melting film roller; 4. Support frame two; 51. Adjusting frame; 52. Adjusting screw; 6. Cooling pressure roller; 71. Cooling water tank; 72. Cooling water pipe; 73. Water delivery hose; 8. Guide rod; 9. Water pump; 10. Rotary connector; 11. Support frame three; 12. Hot air blower; 13. Refrigerator. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0021] Reference Figures 1-5 As shown, a high-temperature melt-film treatment device for cardboard boxes includes a conveyor mechanism 1 for transporting the cardboard boxes. The conveyor mechanism 1 is a conveyor belt. During the melt-film treatment of the cardboard box surface, the cardboard box can be placed flat on the conveyor mechanism 1, and then the conveyor mechanism 1 drives the cardboard box to move. The cardboard box will first pass through a support frame 2 on the conveyor mechanism 1, and then a melt-film roller 3 is rotatably connected to the support frame 2. The melt-film roller 3 usually has a heating element inside, and can be driven by a motor to rotate during operation. The direction of its rotation is opposite to the direction of movement of the conveyor mechanism 1. The two work together to make the melt-film roller 3... The film contacts the surface of the carton and heats it, so that the molten film can adhere tightly to the surface of the carton. After the film melts, the carton continues to move under the conveying action of the conveying mechanism 1, and then passes through the support frame 2 downstream of the support frame 2. Inside the support frame 2 4, there is a cooling roller 6 with a hollow internal structure through the adjusting component. The surface of the cooling roller 6 is cooled by the cooling mechanism. Then, the cooling roller 6 makes uniform contact with the surface of the carton and cools the surface of the carton. At the same time, it can also roll the surface of the carton evenly, improving the flatness and smoothness of the film surface.

[0022] Reference Figures 1-4As shown, further, in order to adjust the height of the cooling roller 6, the adjustment assembly includes an adjustment frame 51 rotatably connected to both ends of the cooling roller 6 and an adjustment screw 52 rotating on the adjustment frame 51. The adjustment screw 52 is threadedly connected to the support frame 4. By rotating the adjustment screw 52, ​​the cooling roller 6 on the adjustment frame 51 moves up and down. At the same time, in order to prevent the cooling roller 6 from shaking, a guide rod 8 is provided on the adjustment frame 51. One end of the guide rod 8 passes through the support frame 4 and is slidably connected to the support frame 4, so that the cooling roller 6 can move up and down without shaking, maintaining the stability of the cooling roller 6. When the cooling roller 6 contacts the surface of the carton, it can roll on the surface of the carton, which plays a role in laying the film flat. In order to facilitate the rolling of the cooling roller 6, a bearing can be set between the cooling roller 6 and the adjustment frame 51 to lubricate the rotation of the cooling roller 6 and make it easier for the cooling roller 6 to roll.

[0023] Reference Figures 1-4 As shown, further, in order to cool the cooling roller 6, the cooling mechanism includes a cooling water tank 71 with an internal cooler 13 (which can be an absorption cooler, semiconductor cooler, or other device that can cool water), a cooling water pipe 72 in contact with the inner wall of the cooling roller 6, and a water delivery hose 73 connected to both ends of the cooling water pipe 72. The water delivery hose 73 is connected to the cooling water tank 71, and a water pump 9 is provided on the water delivery hose 73. In use, the water pump 9 pumps the cooled water in the water tank into the cooling water pipe 72 through the water delivery hose 73, and then into the water tank through the other end of the water delivery hose 73, realizing the circulation of water. It can also keep the water in the cooling water pipe 72 in a cooled state, improving the efficiency of cooling the surface of the carton.

[0024] Reference Figure 5 As shown, furthermore, in order to ensure that the cooling roller 6 can rotate without obstruction, both ends of the cooling water pipe 72 are provided with rotating connectors 10. The water supply hose 73 is rotatably connected to the rotating connectors 10. When the cooling roller 6 rotates, it will drive the cooling water pipe 72 to rotate. At this time, due to the function of the rotating connectors 10, the water supply hose 73 can be kept stationary. In order to prevent water leakage at the rotating connectors 10, a mechanical seal is required. The mechanical seal consists of components such as a stationary ring, a rotating ring, and a spring. The stationary ring is installed on the water supply hose 73, and the rotating ring rotates synchronously with the rotating connectors 10. The spring provides elasticity to make the rotating ring and the stationary ring fit tightly together to form a sealing surface. During rotation, a very small gap is maintained between the sealing surfaces to prevent water leakage. At the same time, it can withstand a certain pressure and speed. The above is the prior art, which should be known to those skilled in the art, and will not be described in detail here.

[0025] Reference Figure 4As shown, the cooling water pipe 72 is spiral-shaped and its inner diameter gradually decreases from the middle to both ends. Since the heat dissipates quickly at both ends of the cooling roller 6 and relatively slowly in the middle, if the diameter of the cooling water pipe 72 is uniform, it will lead to over-cooling at both ends and insufficient cooling in the middle. By reducing the diameter of the cooling water pipe 72 near both ends of the cooling roller 6, the flow rate of the cooling medium can be increased, enhancing the cooling effect at both ends. By increasing the diameter of the cooling water pipe 72 in the middle of the cooling roller 6, the flow rate of the cooling medium can be appropriately reduced, the residence time of the cooling medium in the middle can be extended, and the heat absorption can be increased, thereby balancing the cooling rate of different parts of the entire cooling roller 6 and achieving uniform cooling.

[0026] Reference Figures 1-2 As shown, further, in order to pre-treat the surface of the carton, the conveying mechanism 1 is provided with a support frame 3 11. The support frame 3 11 is located upstream of the support frame 1 2 and is equipped with a hot air blower 12 for preheating the surface of the carton. The hot air blower 12 generally converts energy such as electricity or gas into heat energy and then blows out the heated air to achieve the function of heating the object. By preheating the surface of the carton with the hot air blower 12 before the melting film is applied, the adhesive on the surface of the carton can better exert its adhesiveness, thereby improving the firmness of the subsequent lamination on the surface of the carton, making the lamination tightly adhere to the carton, and making it less likely to have problems such as bubbling or delamination.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A carton surface high-temperature film melting treatment device, comprising a conveying mechanism (1) for conveying cartons, a support frame I (2) is arranged above the conveying mechanism (1), a film melting roller (3) for melting the surface of the carton is rotatably connected to the support frame I (2), characterized in that, The conveying mechanism (1) is further provided with a second supporting frame (4) located downstream of the first supporting frame (2), and the second supporting frame (4) is internally provided with a cooling pressure roller (6) with a hollow structure through an adjusting assembly, and the cooling pressure roller (6) is used for cooling the surface of the carton after film melting. The cooling mechanism is further used for cooling the surface of the carton.

2. A carton surface high temperature melt film treatment apparatus according to claim 1, wherein, The adjusting assembly comprises an adjusting frame (51) rotationally connected to both ends of the cooling pressure roller (6) and an adjusting screw (52) rotationally arranged on the adjusting frame (51), the adjusting screw (52) is threadedly connected with the second supporting frame (4), the adjusting frame (51) is provided with a guide rod (8), one end of the guide rod (8) penetrates through the second supporting frame (4) and is slidably connected with the second supporting frame (4).

3. A carton surface high temperature melt film treatment apparatus as claimed in claim 1, wherein, The cooling mechanism comprises a cooling water tank (71) internally provided with a refrigerating device (13), a cooling water pipe (72) in contact with the inner wall of the cooling pressure roller (6), and water delivery hoses (73) respectively connected with both ends of the cooling water pipe (72), the water delivery hoses (73) are in communication with the cooling water tank (71), and the water delivery hoses (73) are provided with a water pump (9).

4. A carton surface high temperature melt film treatment apparatus as claimed in claim 3, wherein, Both ends of the cooling water pipe (72) are provided with rotary connecting heads (10), and the water delivery hoses (73) are rotationally connected with the rotary connecting heads (10).

5. A carton surface high temperature melt film treatment apparatus as claimed in claim 3, wherein, The cooling water pipe (72) is spiral-shaped and the inner diameter gradually decreases from the middle to both ends.

6. A carton surface high temperature melt film treatment apparatus as claimed in claim 1, wherein, The conveying mechanism (1) is provided with a third supporting frame (11) located upstream of the first supporting frame (2) and provided with a hot air blower (12) used for preheating the surface of the carton.

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