Board forming apparatus

Abstract

The present application relates to paperboard forming equipment, relates to the technical field of paperboard forming, including base paper conveying system, core paper conveying and forming system, face paper preheating system, rack and output drying system, the core paper conveying and forming system includes two forming roller devices and lower glue coating device, the two forming roller devices are engaged with each other, the lower glue coating device is attached to the forming roller device close to the output drying system side, the lower side of the forming roller device is provided with a base paper attachment reference roller, each forming roller device includes an oil injection core roller and a corrugated surface roller, the corrugated surface roller is sleeved outside the oil injection core roller, adjacent positions of the two oil injection core rollers are provided with oil injection channels, the inner side wall of the corrugated surface roller is provided with a plurality of material blocking strips along the inner side wall generatrix of the corrugated surface roller, the lower glue coating device is installed below the two corrugated surface rollers, the corrugated surface roller is attached and rolled with the base paper attachment reference roller, the corrugated surface roller is transversely staggered on the top of the base paper attachment reference roller, effectively increasing the surface friction coefficient of the paperboard, and improving the subsequent transfer conveying performance.

Description

Technical Field

[0001] This invention relates to the field of paperboard forming technology, and in particular to a paperboard forming device. Background Technology

[0002] Paperboard forming equipment is widely used in the packaging industry, especially in the production of corrugated cardboard. The traditional paperboard forming process typically includes conveying, gluing, pressing, and drying of the base liner, core liner, and face liner. However, existing equipment still has some shortcomings in actual production: on the one hand, the surface of the base liner is relatively smooth, resulting in a low coefficient of friction on the surface of the cardboard formed after pressing with the core liner. This makes the cardboard prone to slipping during subsequent stacking and transport, affecting the stability and efficiency of carton forming; on the other hand, the lubrication and glue distribution of the core liner forming rollers are not uniform enough, easily causing wear on the corrugated rollers or uneven glue application, thus affecting the bonding strength and overall quality of the cardboard.

[0003] In addition, the temperature control accuracy and adaptability of the paper preheating and output drying system need to be improved. Summary of the Invention

[0004] To overcome the technical defects of the existing technology, the present invention provides a paperboard forming device that wets the bottom paper and uses the transverse movement of the corrugated roller to create micro-folds, effectively increasing the surface friction coefficient of the paperboard and improving the subsequent transfer and conveying performance.

[0005] The technical solution adopted in this invention is: A cardboard forming machine includes a bottom liner conveying system, a core liner conveying and forming system, a face liner preheating system, a frame, and an output drying system. The bottom liner conveying system, core liner conveying and forming system, and face liner preheating system are respectively mounted on the frame from bottom to top. A bottom liner lower layer wetting roller is provided on the frame. The core liner conveying and forming system includes two forming roller assemblies and a lower layer gluing assembly. The two forming roller assemblies mesh with each other, and the lower layer gluing assembly is attached to the forming roller assembly closest to the output drying system. The bottom side is provided with a base paper bonding reference roller. Each forming roller device includes an oil injection core roller and a corrugated roller. The corrugated roller is sleeved on the outside of the oil injection core roller. An oil injection channel is provided at the adjacent position of the two oil injection core rollers. The inner side wall of the corrugated roller is provided with several baffle strips along the generatrix of the inner side wall of the corrugated roller. The lower layer glue coating device is installed on the bottom side of the two corrugated rollers. The two corrugated rollers mesh with each other. The corrugated roller is bonded and rolled with the base paper bonding reference roller. The corrugated roller moves laterally at the top of the base paper bonding reference roller.

[0006] Preferably, the bottom paper conveying system includes a bottom paper conveying device, a bottom paper heating device, and a bottom paper gluing device. The bottom paper conveying system, the bottom paper heating device, and the bottom paper gluing device are all mounted on the frame, and the bottom paper heating device and the bottom paper gluing device are arranged opposite to each other.

[0007] Preferably, the bottom paper conveying device includes a plurality of bottom paper conveying rollers.

[0008] Preferably, the bottom paper heating device includes a bottom paper heating tank and a hot air blower, wherein the bottom paper heating tank is connected to the hot air blower.

[0009] Preferably, the base paper gluing device includes a gluing lifting block and a gluing lifting screw, the gluing lifting screw is mounted on the frame, and the gluing lifting block is connected to the gluing lifting screw in a transmission connection.

[0010] Preferably, the paper preheating system is an electrically heated paper heating plate.

[0011] Preferably, the top of the electric heating paper heating plate is provided with two opposing limiting plates.

[0012] Preferably, the output drying system includes two mutually adapted upper output heating rollers and lower output heating rollers. The lower output heating roller is rotatably mounted on the frame, and the upper output heating roller is mounted on the frame via a slider, and the upper output heating roller is rotatably mounted on the slider.

[0013] The beneficial effects of this invention are: Significantly improving the surface friction coefficient of cardboard and enhancing its adaptability to subsequent processes: By pre-wetting the bottom layer paper with a dampening roller and combining this with the lateral movement of the corrugated roller on top of the base roller, uniform micro-wrinkles are created on the surface of the bottom layer paper, effectively increasing the surface roughness and friction coefficient of the cardboard. This structural improvement effectively solves the problem of slippage in traditional cardboard during stacking, transfer, and carton forming, significantly improving the stability and efficiency of subsequent cardboard processing and conveying.

[0014] To improve the uniformity of lubrication on the core paper forming roll and extend equipment life: The forming roll device adopts a combination structure of an oil-injected core roll and a corrugated roll, with baffles along the generatrix on the inner wall of the corrugated roll. These baffles create controllable resistance to the lubricating oil flowing from the oil injection channel, ensuring a uniform oil film distribution in the inter-roller area. Simultaneously, changes in oil pressure guide slight lateral misalignment of the corrugated roll. This design not only ensures adequate lubrication of the forming roll and reduces localized wear, but also avoids poor adhesive distribution due to uneven lubrication, thereby extending equipment maintenance cycles and service life.

[0015] Improve the bonding strength and overall quality of paperboard: The lower coating device is attached to the forming roller device near the output drying system. With the uniform movement of the corrugated roller and the micro-fold structure of the bottom paper, the glue is more evenly distributed and more tightly bonded to the core paper and the bottom paper during the pressing process. This significantly improves the bonding strength and overall structural strength of the paperboard and reduces the risk of delamination or delamination. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure from another perspective of the present invention.

[0018] Figure 3 This is a side view of the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly relationship of the forming roller device.

[0020] Explanation of reference numerals in the attached figures: 1. Bottom paper conveying system; 11. Bottom paper conveying device; 12. Bottom paper heating device; 13. Bottom paper gluing device; 2. Core paper conveying and forming system; 21. Forming roller device; 211. Oil injection core roller; 2111. Oil injection channel; 212. Corrugated roller; 22. Lower layer glue coating device; 2121. Material stop bar; 3. Facial paper preheating system; 31. Limiting plate; 4. Rack; 5. Output drying system; 51. Upper output heating roller; 52. Lower output heating roller; 6. The base paper is bonded to the reference roller; 7. Wetting roller. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 — Figure 4 As shown, this embodiment provides a paperboard forming equipment, including a bottom paper conveying system 1, a core paper conveying and forming system 2, a face paper preheating system 3, a frame 4, and an output drying system 5. The bottom paper conveying system 1, the core paper conveying and forming system 2, and the face paper preheating system 3 are respectively installed on the frame 4 from bottom to top. The frame 4 is provided with a bottom paper lower layer wetting roller 7, so that the bottom paper is wetted. The core paper conveying and forming system 2 includes two forming roller devices 21 and a lower layer glue coating device 22. The two forming roller devices 21 mesh with each other. The lower layer glue coating device 22 adheres to the forming roller device 21 on the side close to the output drying system 5, and a bottom paper adhesion reference roller 6 is provided on the lower side of the forming roller device 21.

[0022] Each forming roller device 21 includes an oil injection core roller 211 and a corrugated roller 212. The corrugated roller 212 is sleeved outside the oil injection core roller 211. Oil injection channels 2111 are provided at adjacent positions of the two oil injection core rollers 211. The inner sidewall of the corrugated roller 212 is provided with several baffles 2121 along the generatrix of the inner sidewall of the corrugated roller 212. The lower coating device 22 is installed on the lower side of the two corrugated rollers 212, and the two corrugated rollers 212 mesh with each other. Due to the obstruction of the baffles 2121, the oil flowing out of the oil injection channel 2111 encounters the obstruction of each baffle 2121. Between the corrugated roller 212 and the oil injection core roller 211, the oil, encountering resistance, forms a pad of oil between them. When the oil injection channel 2111 points towards the area between two adjacent baffles 2121, the oil resistance is lower, and the oil flow between the corrugated roller 212 and the oil injection core roller 211... As the gap between them decreases, the oil resistance increases when the oil injection channel 2111 points to the baffle strip 2121. The gap between the corrugated roller 212 and the oil injection core roller 211 increases. That is, the two oil injection channels 2111 are respectively in the corresponding corrugated roller 212. Under the action of each baffle strip 2121, the two intermeshing corrugated rollers 212 are driven to move closer or further away from each other, causing the corrugated roller 212 to move laterally. The corrugated roller 212 rolls in contact with the bottom paper bonding reference roller 6. The corrugated roller 212 moves laterally at the top of the bottom paper bonding reference roller 6. The movement at the position of the wet bottom paper causes the bottom paper to wrinkle, increasing the surface friction coefficient of the paperboard. This facilitates the transfer and conveying of the paperboard when it is formed into a carton. By wetting the bottom paper and using the lateral movement of the corrugated roller 212 to create micro-wrinkles, the surface friction coefficient of the paperboard is effectively increased, improving the subsequent transfer and conveying performance.

[0023] Specifically, the bottom paper conveying system 1 includes a bottom paper conveying device 11, a bottom paper heating device 12, and a bottom paper gluing device 13. The bottom paper conveying system 1, the bottom paper heating device 12, and the bottom paper gluing device 13 are all installed on the frame 4. The bottom paper heating device 12 and the bottom paper gluing device 13 are arranged opposite to each other to realize the conveying and gluing of the bottom paper.

[0024] Specifically, the bottom paper conveying device 11 includes several bottom paper conveying rollers to realize the conveying of the bottom paper.

[0025] Specifically, the bottom paper heating device 12 includes a bottom paper heating tank and a hot air blower. The bottom paper heating tank is connected to the hot air blower to achieve preheating of the bottom paper.

[0026] Specifically, the bottom paper gluing device 13 includes a gluing lifting block and a gluing lifting screw. The gluing lifting screw is installed on the frame 4, and the gluing lifting block and the gluing lifting screw are connected in a transmission manner to realize the gluing of the bottom paper.

[0027] Specifically, the face paper preheating system 3 is an electrically heated face paper heating plate to realize the conveying of the face paper.

[0028] Specifically, the top of the electric heating plate for the face paper is provided with two opposing limiting plates 31 to constrain the lateral position of the face paper.

[0029] Specifically, the output drying system 5 includes two mutually compatible upper output heating rollers 51 and lower output heating rollers 52. The lower output heating roller 52 is rotatably mounted on the frame 4, and the upper output heating roller 51 is mounted on the frame 4 via a slider. The upper output heating roller 51 is rotatably mounted on the slider, thereby achieving rapid drying and shaping of the cardboard.

[0030] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A cardboard forming equipment, characterized in that, The system includes a bottom paper conveying system, a core paper conveying and forming system, a face paper preheating system, a frame, and an output drying system. The bottom paper conveying system, core paper conveying and forming system, and face paper preheating system are respectively mounted on the frame from bottom to top. A bottom paper lower layer wetting roller is provided on the frame. The core paper conveying and forming system includes two forming roller assemblies and a lower layer glue coating assembly. The two forming roller assemblies mesh with each other. The lower layer glue coating assembly is attached to the forming roller assembly closest to the output drying system, and the lower side of the forming roller assembly is... The device includes a base paper bonding reference roller, and each forming roller assembly includes an oil injection core roller and a corrugated surface roller. The corrugated surface roller is sleeved outside the oil injection core roller. An oil injection channel is provided at an adjacent position of the two oil injection core rollers. The inner sidewall of the corrugated surface roller is provided with several baffle strips along the generatrix of the inner sidewall of the corrugated surface roller. The lower layer glue coating device is installed on the lower side of the two corrugated surface rollers. The two corrugated surface rollers mesh with each other. The corrugated surface roller is bonded and rolled with the base paper bonding reference roller. The corrugated surface roller moves laterally at the top of the base paper bonding reference roller.

2. The cardboard forming equipment according to claim 1, characterized in that, The bottom paper conveying system includes a bottom paper conveying device, a bottom paper heating device, and a bottom paper gluing device. The bottom paper conveying system, the bottom paper heating device, and the bottom paper gluing device are all mounted on the frame, and the bottom paper heating device and the bottom paper gluing device are arranged opposite to each other.

3. The cardboard forming equipment according to claim 1, characterized in that, The bottom paper conveying device includes several bottom paper conveying rollers.

4. The cardboard forming equipment according to claim 1, characterized in that, The bottom paper heating device includes a bottom paper heating tank and a hot air blower, and the bottom paper heating tank is connected to the hot air blower.

5. The cardboard forming equipment according to claim 1, characterized in that, The base paper gluing device includes a gluing lifting block and a gluing lifting screw. The gluing lifting screw is mounted on the frame, and the gluing lifting block is connected to the gluing lifting screw in a transmission manner.

6. The cardboard forming equipment according to claim 1, characterized in that, The paper preheating system is an electrically heated paper heating plate.

7. The cardboard forming equipment according to claim 6, characterized in that, The top of the electric heating paper heating plate is provided with two opposing limiting plates.

8. The cardboard forming equipment according to claim 1, characterized in that, The output drying system includes two mutually compatible upper output heating rollers and lower output heating rollers. The lower output heating roller is rotatably mounted on the frame, and the upper output heating roller is mounted on the frame via a slider, and is rotatably mounted on the slider.

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