Paperboard printing and drying device

Abstract

The paperboard printing and drying device comprises a drying box installed on a rack, a bottom opening of the drying box is located above a conveying belt, a hot air box is arranged on the inner top wall of the drying box, a plurality of air outlets are formed in the side wall of the hot air box, and a heating assembly is installed in the hot air box; and the air supply assembly is communicated with the inner cavity of the hot air box. When the paperboard drying device is used for drying paperboards, uniform heating of the paperboards can be guaranteed, deformation of the paperboards is effectively avoided, and product quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cardboard drying, and particularly relates to a cardboard printing and drying device. Background Art

[0002] After cardboard printing, a dryer is needed to accelerate the drying of the ink. However, the currently used dryers usually use hot air or infrared rays to dry the side with printed ink. This direct blowing or concentrated baking method is likely to cause uneven heating of the cardboard, resulting in warping or shrinking of the cardboard, affecting the flatness of the cardboard and subsequent processing. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a cardboard printing and drying device to solve the problem of uneven heating during the cardboard drying process.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A cardboard printing and drying device includes a drying box installed on a frame. The bottom of the drying box is open and located above a conveyor belt. The inner top wall of the drying box is provided with a hot air box. The side wall of the hot air box is provided with a plurality of air outlets, and a heating component is installed in the hot air box; it also includes a air supply component, and the air supply component is communicated with the inner cavity of the hot air box.

[0006] Compared with the prior art, the principle and beneficial effects of the utility model are as follows:

[0007] In this solution, the air supply component introduces air into the hot air box. After the introduced air is heated by the heating component, it is blown into the drying box through the air outlets on the side wall of the hot air box. Since the air outlets are facing the side wall of the drying box, the blown hot air diffuses evenly in all directions after reaching the side wall of the drying box, so that the hot air is evenly distributed in the drying box. After the cardboard enters the drying box, the hot air evenly covers the cardboard, realizing uniform heating and effectively avoiding deformation of the cardboard.

[0008] As a preferred embodiment of the utility model, the heating component includes a plurality of electric heating tubes evenly installed on the inner bottom wall of the hot air box, and heat conducting sheets are installed between adjacent electric heating tubes. In this solution, the heat generated by the electric heating tubes can be transferred to the heat conducting sheets. By setting the heat conducting sheets, on the one hand, the contact area with air can be increased to improve the heating efficiency of air, and on the other hand, the air can be guided. When the air enters the heating box, it flows in the gaps between adjacent heat conducting sheets, so that the air can be fully heated when flowing through the gaps, improving the heating effect.

[0009] As a preferred embodiment of the utility model, the upper part of the heat conducting sheet is inclined. In this solution, by setting the upper part of the heat conducting sheet to be inclined, the residence time of the air can be increased when it enters the gaps of the heat conducting sheets, so as to be fully heated and further improve the heating effect.

[0010] As a preferred embodiment of the present utility model, a channel for the cardboard to enter is formed between the drying box and the conveyor belt. Pressing plates are provided on both sides of the channel, and the pressing plates slide vertically on the frame to adapt to cardboard of different thicknesses. In this solution, the pressing plates are arranged on both sides of the channel. When the cardboard is conveyed on the conveyor belt, the pressing plates are located above the two side edges of the cardboard, which can play a role in limiting the cardboard and prevent the cardboard from shaking violently under the hot air.

[0011] As a preferred embodiment of the present utility model, hooks are respectively hinged at positions of the pressing plates close to the front and rear sides of the drying box. A plurality of adjusting rods are vertically distributed on the front and rear side walls of the drying box, and the hooks are hooked on the corresponding adjusting rods. In this solution, by hooking the hooks onto different adjusting rods, the height of the pressing plates can be changed, and then the distance between the pressing plates and the conveyor belt can be changed to adapt to cardboard of different thicknesses. The structure is simple and the operation is convenient.

[0012] As a preferred embodiment of the present utility model, a plurality of T-shaped sliders are evenly arranged along the length direction of one side of the pressing plate close to the frame, and a plurality of sliding grooves are formed on the frame to cooperate with the plurality of T-shaped sliders. In this solution, the cooperation between the T-shaped sliders and the sliding grooves can make the pressing plates slide more smoothly vertically.

[0013] As a preferred embodiment of the present utility model, heat insulation plates are installed on the inner side wall and the inner top wall of the drying box. In this solution, by providing the heat insulation plates, the loss of the hot air heat in the drying box can be reduced. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of area A in

[0016] Figure 3 is a partial structural cross-sectional view of an embodiment of the present utility model;

[0017] Figure 4 is Figure 2 an enlarged view of area B in

[0018] The reference numerals include:

[0019] Frame 1, sliding groove 11, drying box 2, adjusting rod 21, hot air box 3, air outlet 31, electric heating tube 4, heat conducting sheet 5, fan 6, conveyor belt 7, pressing plate 8, hook 81, cardboard 9. Detailed Embodiment

[0020] Typical embodiments embodying the features and advantages of the present utility model will be specifically described in the following description. It should be understood that the present utility model can have various variations in different embodiments, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present utility model.

[0021] In the description of the present application, the orientation or positional relationship indicated by terms such as "top", "bottom", "one end", "one side", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0022] See Figure 1 As shown, this embodiment discloses a cardboard printing and drying device, which includes a drying box 2 installed on a frame 1. The bottom of the drying box 2 is open and located above a conveyor belt 7. Among them, after the drying box 2 is installed on the frame 1, a channel for the cardboard 9 to enter is formed between its lower side and the conveyor belt 7. The cardboard 9 is conveyed from the channel to below the drying box 2 and dried using hot air. Specifically, see Figure 3 and Figure 4 As shown, a hot air box 3 with an open top is integrally formed on the inner top wall of the drying box 2. A air supply assembly is installed on the top of the drying box 2. The air supply assembly includes a fan 6 installed on the top of the drying box 2. An air inlet pipe is installed on the top of the drying box 2, and the air inlet pipe communicates the hot air box 3 and the fan 6. Air is introduced into the hot air box 3 under the action of the fan 6.

[0023] A heating assembly is installed in the hot air box 3. The heating assembly includes a number of electric heating tubes 4 evenly installed on the inner bottom wall of the hot air box 3. Among them, heat conducting sheets 5 are installed between adjacent electric heating tubes 4. The lower part of the heat conducting sheet 5 is upright and the upper part is inclined. In this embodiment, the heat of the electric heating tubes 4 is transferred to the heat conducting sheets 5. By installing the heat conducting sheets 5, on the one hand, the heat conducting sheets 5 can increase the contact area with the air, thereby improving the heating efficiency of the air. On the other hand, the heat conducting sheets 5 can guide the air so that the air flows in the gaps between adjacent heat conducting sheets 5 to ensure that the air is fully heated when flowing through the gaps, improving the heating effect. At the same time, the upper part of the heat conducting sheet 5 is set to be inclined, which can block the air in the gaps to a certain extent, thereby increasing the residence time of the air in the gaps and further enhancing the heating efficiency.

[0024] The side wall of the hot air box 3 is provided with a plurality of air outlets 31. In this embodiment, the air outlets 31 are only provided on the left and right side walls of the hot air box 3. In other embodiments, the air outlets 31 can be provided on all four side walls of the hot air box 3. By providing the air outlets 31 on the side wall of the hot air box 3, the blown hot air can evenly diffuse around after reaching the side wall of the drying box 2, so that the hot air in the drying box 2 is evenly distributed, so that when the cardboard 9 is dried, the cardboard 9 can be evenly covered, realizing uniform heating, so as to effectively avoid the deformation of the cardboard 9.

[0025] Furthermore, heat insulation plates are installed on the inner side wall and the inner top wall of the drying box 2. By providing the heat insulation plates, the loss of the heat of the hot air in the drying box 2 can be reduced.

[0026] Furthermore, pressing plates 8 are also provided on both sides of the conveyor belt 7. The pressing plates 8 are located above the two side edges of the cardboard 9 and are used to limit the cardboard 9 to prevent the cardboard 9 from shaking violently under the hot air. Specifically, as shown in Figure 2 As shown, a plurality of T-shaped sliders are integrally formed along the length direction of the pressing plate 8 on the side close to the frame 1. A plurality of sliding grooves 11 are formed on the frame 1 to cooperate with the plurality of T-shaped sliders. The T-shaped sliders are matched with the sliding grooves 11, and the pressing plate 8 can slide vertically on the frame 1. Hooks 81 are respectively hinged at the positions of the pressing plate 8 close to the front and rear side walls of the drying box 2. A plurality of adjusting rods 21 are respectively installed at the positions corresponding to the hooks 81 on the front and rear side walls of the drying box 2. The plurality of adjusting rods 21 are vertically distributed. By hooking the hooks 81 onto different adjusting rods 21, the height of the pressing plate 8 can be changed, and then the distance between the pressing plate 8 and the conveyor belt can be changed to adapt to cardboard 9 of different thicknesses.

[0027] The above-mentioned implementation manners are only the preferred implementation manners of the present invention and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the protection scope required by the present invention.

Claims

1. A cardboard printing drying device, comprising a drying box mounted on a frame, characterized in that: The bottom of the drying box is open and located above the conveyor belt. A hot air box is arranged on the inner top wall of the drying box. A plurality of air outlets are opened on the side wall of the hot air box. A heating component is installed in the hot air box. The hot air box also includes an air supply component which is connected to the inner cavity of the hot air box.

2. The cardboard printing and drying device according to claim 1 is characterized in that: The heating assembly comprises a plurality of electric heating tubes evenly installed on the inner bottom wall of the hot air box, and heat conducting sheets are installed between adjacent electric heating tubes.

3. The cardboard printing and drying device according to claim 2 is characterized in that: The upper part of the heat conducting sheet is arranged inclined.

4. The cardboard printing and drying device according to claim 1 is characterized in that: A passage for paperboard to enter is formed between the drying box and the conveyor belt. Pressing plates are arranged on both sides of the passage. The pressing plates slide vertically on the frame to adapt to paperboards of different thicknesses.

5. The cardboard printing and drying device according to claim 4 is characterized in that: The pressing plate is respectively hinged with hooks at positions near the front and rear sides of the drying box. A plurality of adjusting rods are vertically distributed on the front and rear side walls of the drying box, and the hooks are hooked on the corresponding adjusting rods.

6. The cardboard printing and drying device according to claim 5, characterized in that: A plurality of T-shaped sliding blocks are evenly arranged on one side of the pressing plate close to the frame along the length direction thereof, and a plurality of sliding grooves are provided on the frame to match the plurality of T-shaped sliding blocks.

7. The cardboard printing and drying device according to claim 1, characterized in that: The inner side wall and the inner top wall of the drying box are installed with heat insulation boards.

Images