A packaging box drying apparatus and method

Abstract

A packaging box drying device and method includes a chain conveyor with a drying hood on it. The drying hood has an inlet and an outlet at both ends. Multiple sets of baking lamps are installed on the inner wall of the drying hood. Multiple sets of rotating box clamps are sequentially arranged on the chain conveyor. Each rotating box clamp includes a bearing seat connected to the chain conveyor, with a rotating shaft installed inside the bearing seat. The upper end of the rotating shaft is fixedly connected to a turntable. Multiple angle steels for positioning the packaging boxes are fixedly connected to the turntable. Guide bars are fixedly connected to the frame of the chain conveyor, with a chamfered end near the inlet. The outer edge of the turntable inside the drying hood adheres tightly to the guide bars. This invention solves the problem of uneven glue drying in existing packaging boxes.

Description

Technical Field

[0001] This invention relates to a packaging box drying apparatus and method. Background Technology

[0002] The body of a liquor packaging box is a square tube structure composed of four lining boards. To improve the strength of the box and make it more aesthetically pleasing, a layer of wrapping paper is pasted on the outside. Since the wrapping paper is fully glued, the box body needs to be dried after the wrapping paper is pasted. The existing drying method is natural ventilation drying, which is slow and not conducive to mass production. In order to improve the drying speed, existing technologies have also proposed corresponding solutions, such as patents "CN108168218 B, a drying device for packaging boxes" and "CN218034282 U, a drying device for processing packaging boxes". These use hot air to dry the packaging boxes. The problem is that when the packaging box is placed on the conveyor, the hot air outlet can only blow in one direction, usually the top surface of the packaging box. The side of the packaging box facing the conveyor and the side in contact with the conveyor cannot be fully exposed to the air, resulting in uneven drying of the glue on different sides of the packaging box, making the packaging box prone to deformation during the drying process. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a packaging box drying device and method to solve the problem of uneven drying of adhesive in existing packaging boxes.

[0004] To solve the above problems, the technical solution to be provided by the present invention is as follows:

[0005] A packaging box drying device includes a chain conveyor with a drying hood on it. The drying hood has an inlet and an outlet at both ends. Multiple drying lamps are installed on the inner wall of the drying hood. Multiple sets of rotating box clamps are arranged sequentially on the chain conveyor. Each rotating box clamp includes a bearing seat connected to the chain conveyor, and a rotating shaft is installed inside the bearing seat. The upper end of the rotating shaft is fixedly connected to a turntable. Multiple angle steels for positioning the packaging boxes are fixedly connected to the turntable. Guide bars are fixedly connected to the frame of the chain conveyor. The guide bars have a chamfer at the end near the inlet. The outer edge of the turntable inside the drying hood is pressed against the guide bars.

[0006] A rubber ring is attached and fixed to the outer edge of the turntable.

[0007] An exhaust fan is installed on top of the drying hood. The exhaust port of the exhaust fan is connected to the drying hood through multiple exhaust pipes, and the exhaust port of the exhaust fan is connected to the outside through a pipe.

[0008] Several elastic rods with outward bending at the top are fixedly connected to the turntable, and the elastic rods press against the surface of the packaging box.

[0009] A method for drying packaging boxes involves placing the packaging box onto an angle steel frame, then feeding the packaging box into a drying hood via a chain conveyor. Heat lamps inside the drying hood heat and dry both sides of the packaging box. During the heating and drying process, a turntable in contact with guide bars rotates under the drive of the chain conveyor, thus rotating and drying the packaging box.

[0010] The technical effect of this invention is that after the packaging box enters the drying hood, the packaging box can automatically rotate under the drive of the chain conveyor, so that the four sides of the packaging box are evenly irradiated by the baking lamp, making the packaging box heat more evenly, and the glue dries evenly and thoroughly, without the phenomenon of packaging box drying deformation. Attached Figure Description

[0011] The invention will be further described below with reference to the accompanying drawings:

[0012] Figure 1 This is a partial cross-sectional view of the main structure of the present invention.

[0013] Figure 2 This is a top view of a partial cross-sectional structure of the present invention.

[0014] Figure 3 This is a three-dimensional structural diagram of the turntable according to the present invention.

[0015] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Chain conveyor; 2. Drying fan; 3. Drying hood; 4. Baking lamp; 5. Exhaust pipe; 6. Turntable clamp; 7. Guide bar; 8. Packaging box; 61. Angle steel; 62. Elastic bar; 63. Turntable; 64. Rubber ring; 65. Bearing seat; 66. Rotating shaft. Detailed Implementation

[0018] like Figures 1 to 5 As shown, a packaging box drying device includes a chain conveyor 1, a drying hood 3 on the chain conveyor 1, an inlet and an outlet at both ends of the drying hood 3, multiple sets of baking lamps 4 installed on the inner wall of the drying hood 3, and multiple sets of rotating box clamps 6 arranged sequentially on the chain plate of the chain conveyor. The rotating box clamp 6 includes a bearing seat 65 connected to the chain plate, a rotating shaft 66 assembled inside the bearing seat 65, the upper end of the rotating shaft 66 fixedly connected to a turntable 63, four angle steels 61 for positioning the packaging boxes fixedly connected to the turntable 63, and the four corners of the packaging boxes respectively wrapped around the four angle steels 61. An "L"-shaped guide bar 7 is fixedly connected to the frame of the chain conveyor, and the guide bar 7 has a chamfer at the end near the inlet. The outer edge of the turntable 63 inside the drying hood 3 contacts the guide bar 7.

[0019] The working process of this invention is as follows: After the packaging box is wrapped onto the angle steel 61, the packaging box is fed into the drying hood 3 by the chain conveyor 1. The baking lamp 4 inside the drying hood 3 heats and dries both sides of the packaging box. During the heating and drying process, the turntable 63, which is in contact with the guide bar 7, rotates under the drive of the chain conveyor 1, and then rotates with the packaging box. The rotating packaging box can be evenly irradiated by the baking lamp 4, so that the packaging box is heated more evenly and the glue dries evenly and thoroughly, and there will be no deformation due to uneven drying of the packaging box.

[0020] A rubber ring 64 is attached and fixed to the outer edge of the turntable 63. The rubber ring 64 is made of high-temperature resistant rubber, which allows the rubber ring 64 to adhere tightly to the guide strip 7, increasing the friction of the turntable 63 and ensuring that the turntable 63 can rotate effectively.

[0021] An exhaust fan 2 is installed on top of the drying hood 3. The exhaust port of the exhaust fan 2 is connected to the drying hood 3 through multiple exhaust pipes 5, and the exhaust port of the exhaust fan 2 is connected to the outside through a pipe. When drying the packaging boxes, the exhaust gas generated during drying is drawn out of the workshop by the exhaust fan 2 to prevent the glue odor from spreading in the workshop.

[0022] Multiple elastic rods 62 with outwardly curved upper ends are fixedly connected to the turntable 63, and the elastic rods 62 press against the surface of the packaging box. During the drying process of the packaging box, the elastic rods 62 are pressed tightly against the surface of the packaging box, pressing and fixing the packaging paper on the surface of the packaging box, further preventing the packaging paper on the surface of the packaging box from curling and deforming due to uneven evaporation.

[0023] The heat lamp 4 located in the middle of the drying hood 3 has a higher power than the heat lamps 4 located at both ends of the drying hood 3. This allows the packaging boxes fed into the drying hood 3 to be baked at a gradually increasing temperature, and then the temperature of the packaging boxes to be baked at a gradually decreasing temperature as they are conveyed out by the chain conveyor, further preventing the packaging boxes from deforming due to sudden temperature changes.

Claims

1. A packaging box drying device, comprising a chain plate conveyor (1), a drying cover (3) is arranged on the chain plate conveyor (1), the drying cover (3) is respectively provided with an inlet and an outlet at two ends, and a plurality of baking lamps (4) are installed on the inner wall of the drying cover (3), characterized in that: A plurality of groups of rotating box clamps (6) are arranged and installed on the chain plates of the chain plate conveyor in sequence, the rotating box clamp (6) comprises a bearing seat (65) connected to the chain plate, a rotating shaft (66) is assembled in the bearing seat (65), the upper end of the rotating shaft (66) is fixedly connected with a rotating disc (63), a plurality of angle steels (61) for positioning the packaging box are fixedly connected to the rotating disc (63), a guide bar (7) is fixedly connected to the rack of the chain plate conveyor, the guide bar (7) is provided with a chamfer at the end close to the box inlet, the outer edge of the rotating disc (63) contacts the guide bar (7) in the drying cover (3); the power of the baking lamp (4) located in the middle of the drying cover (3) is greater than the power of the baking lamp (4) located at both ends of the drying cover (3), a plurality of elastic rods (62) with the upper end curved outward are fixedly connected to the rotating disc (63), and the elastic rods (62) are pressed on the surface of the packaging box.

2. The packaging box drying device according to claim 1, characterized in that: A rubber ring (64) is fixedly attached to the outer edge of the rotating disc (63).

3. The packaging box drying device according to claim 1 or 2, characterized in that: An air extractor (2) is installed on the top of the drying cover (3), the air suction port of the air extractor (2) is communicated with the drying cover (3) through a plurality of air extraction pipes (5), and the air exhaust port of the air extractor (2) is communicated with the outside through a pipeline.

4. A packaging box drying method using the packaging box drying apparatus according to claim 1 or 2, characterized by: After the packaging box is sleeved on the angle steel (61), the chain plate conveyor (1) sends the packaging box into the drying cover (3), the baking lamp (4) in the drying cover (3) heats and dries both sides of the packaging box, and in the heating and drying process, the rotating disc (63) in contact with the guide bar (7) rotates under the driving of the chain plate conveyor (1), and the rotating rotating disc (63) rotates and dries the packaging box.

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