A preheating device combining tip heating and arc plate to increase the speed of the tile production line

Abstract

This invention discloses a preheating device that combines corrugated tip heating and curved plate heating, which can increase the speed of corrugated board production line. Belonging to the field of corrugated processing equipment, it includes a front pre-pressing assembly, a rear pre-pressing assembly, and a steam device located below the front pre-pressing assembly. The front pre-pressing assembly includes a set of input guide rollers and a set of pre-pressing guide rollers. The corrugated board can pass through the input guide rollers from above, then from below the input guide rollers to above the pre-pressing guide rollers, and then from between the pre-pressing guide rollers to below, so that the corrugated tip can be heated by steam generated by the steam device. This invention preheats the corrugated board once through the steam device of the front pre-pressing assembly, while simultaneously increasing the moisture content of the corrugated board. Then, the forming guide rollers pre-shape the corrugated board with increased moisture content, and finally, the heating corrugated rollers perform a second preheating, reducing deformation, curling, and breakage during preheating.

Description

Technical Field

[0001] This invention discloses a corrugated processing equipment, and in particular relates to a preheating device that combines corrugated tip heating and arc plate heating to increase the speed of the corrugated board production line. Background Technology

[0002] Corrugated paper is a sheet-like material made by bonding linerboard and corrugated paper with a wave-like shape formed by corrugating rollers. It is commonly used as packaging material for food or digital products.

[0003] Existing corrugated paper requires preheating during processing to ensure adhesion during subsequent gluing and lamination. Most existing preheating devices are only capable of preheating straight boards. During preheating, the temperature rises due to the decrease in moisture content, which can easily cause the paperboard to curl, deform, or break. Furthermore, they cannot preheat corrugated paper with curved or arc-shaped surfaces, and cannot be adapted to corrugated paper with different board shapes. Summary of the Invention

[0004] The purpose of this invention is to provide a preheating device that combines tip heating and arc plate heating to solve the above-mentioned problems and improve the speed of the tile production line.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a preheating device combining corrugated tip heating and curved plate heating that can improve the speed of corrugated board production line, comprising a front pre-pressing assembly, a rear pre-pressing assembly, and a steam device located below the front pre-pressing assembly. The front pre-pressing assembly includes a set of input guide rollers and a set of pre-pressing guide rollers. The corrugated board can pass through the input guide rollers from above, then pass through the input guide rollers from below to above the pre-pressing guide rollers, and then pass through the space between the pre-pressing guide rollers to below, so that the corrugated tip of the corrugated board can be heated by steam generated by the steam device.

[0006] Preferably, the steam device includes a water supply tank for continuous water supply, a heater for heating water to generate steam, and a steam spray plate with dry steam nozzles. The steam spray plate is provided in two sets, and the two sets are respectively located below the input guide roller and the pre-compression guide roller.

[0007] Preferably, the pre-compression guide roller is provided with several heat-conducting bushings at equal intervals.

[0008] Preferably, the post-pre-compression assembly includes a shaping guide roller group and a heating roller assembly, wherein the shaping guide roller group includes a front tension roller, a rear tension roller and a conveying guide roller.

[0009] Preferably, the heating roller assembly includes a liftable lifting platform and a swing arm frame rotatably connected to a plurality of heating rollers, wherein the lifting platform can drive the swing arm frame to move via a pneumatic telescopic rod.

[0010] Preferably, the swing arm frame is provided with a pneumatic sleeve at the shaft end near the heated roller, and the pneumatic sleeve can intermittently clamp the shaft end of the heated roller.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Firstly, the steam device of the pre-pressing component preheats the corrugated cardboard and increases its moisture content. Then, the forming guide roller group pre-shapes the corrugated cardboard with increased moisture content. Finally, the heating rollers preheat the corrugated cardboard a second time, reducing deformation, curling, and cracking during the preheating process.

[0013] Secondly, the lifting platform, swing arm and pneumatic telescopic rod of the heating roller assembly can adjust the pressure angle of the heating corrugated roller to adapt to corrugated cardboard with curved and arc-shaped surfaces, and the pneumatic jacket can intermittently provide pre-tightening force to the shaft end of the heating corrugated roller to prevent the corrugated cardboard from curling during preheating. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a preheating device that combines tip heating and arc plate heating to increase the speed of a tile production line.

[0015] Figure 2 This is a structural schematic diagram of the pre-pressurization assembly, the post-pressurization assembly, and the steam unit;

[0016] Figure 3 A simplified diagram of the cardboard conveying between the front and rear pre-compression assemblies;

[0017] Figure 4 This is a schematic diagram of the pre-compression assembly.

[0018] Figure 5 This is a schematic diagram of the post-preloading assembly.

[0019] Figure 6 This is a simplified flow chart of the preheating process.

[0020] Reference numerals: 1. Front pre-compression assembly; 2. Rear pre-compression assembly; 3. Steam device; 4. Input guide roller; 5. Pre-compression guide roller; 6. Shaping guide roller group; 7. Heating roller assembly; 8. Steam injection plate; 9. Steam injection head; 10. Heat-conducting bushing; 11. Conveying guide roller; 12. Front tension roller; 13. Rear tension roller; 14. Swing arm frame; 15. Pneumatic jacket; 16. Heated rib roller; 17. Pneumatic telescopic rod; 18. Lifting platform. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1

[0023] A preheating device combining tip heating and arc plate, which can increase the speed of the tile production line, such as... Figures 1-5 As shown, it includes a front pre-compression assembly 1, a rear pre-compression assembly 2, and a steam device 3 located below the front pre-compression assembly 1. The front pre-compression assembly 1 includes a set of input guide rollers 4 and a set of pre-compression guide rollers 5. The corrugated cardboard can be wound from above through the input guide rollers 4, then from below the input guide rollers 4 to above the pre-compression guide rollers 5, and then from between the pre-compression guide rollers 5 to below, so that the corrugated tips of the corrugated cardboard can be heated by the steam generated by the steam device 3.

[0024] The steam device 3 includes a water supply tank for continuous water supply, a heater for heating water to generate steam, and a steam spray plate 8 with multiple steam spray nozzles 9. The steam spray plate 8 is provided in two sets, and the two sets are located below the input guide roller 4 and the pre-compression guide roller 5, respectively. The heater heats and evaporates the water continuously supplied by the water supply tank to form steam. The steam can be sprayed from multiple steam spray nozzles 9 on the two sets of steam plates onto the corrugated cardboard conveyed by the input guide roller 4 and the pre-compression guide roller 5.

[0025] Among them, the pre-compression guide roller 5 is provided with several heat-conducting bushings 10 at equal intervals. The heat-conducting bushings 10 can be made of materials with high thermal conductivity, such as aluminum alloy. The heat-conducting bushings 10 can absorb the heat conducted by steam and conduct it evenly to the corrugated cardboard, so that the corrugated cardboard is heated evenly during preheating. The spacing between the heat-conducting bushings 10 can accommodate the diffusion of steam heat flow.

[0026] The post-pre-compression assembly 2 includes a shaping guide roller group 6 and a heating roller assembly 7. The shaping guide roller group 6 includes a front tension roller 12, a rear tension roller 13 and a conveying guide roller 11. The front tension roller 12 and the rear tension roller 13 can shape the corrugated cardboard pressed by the conveying guide roller 11 to ensure that the corrugated cardboard whose moisture content changes after being heated by steam can enter the next process in a suitable shape.

[0027] The heating roller assembly 7 includes a liftable lifting platform 18 and a swing arm frame 14 rotatably connected to several heating corrugated rollers 16. The lifting platform 18 can drive the swing arm frame 14 to move via a pneumatic telescopic rod 17. The swing arm frame 14 is rotatably connected to the frame on both sides. The lifting platform 18 can drive the pneumatic telescopic rod 17 to rise and fall. By extending and retracting the pneumatic telescopic rod 17, the rotation angle of the swing arm frame 14 can be changed, thereby changing the pressure angle of the heating corrugated rollers 16 on the corrugated cardboard, thus adapting to corrugated cardboard of different shapes. The heating corrugated rollers 16 can be copper rollers that are internally heated by electromagnetic heating. The surface of the heating corrugated rollers 16 is provided with several corrugated patterns adapted to the corrugated cardboard. During the first preheating, the steam heat flow increases the moisture content of the corrugated cardboard, so that the temperature of the heating corrugated rollers 16 can be increased during the second preheating.

[0028] Among them, the swing arm frame 14 is provided with a pneumatic clamp 15 near the shaft end of the heating corrugated roller 16. The pneumatic clamp 15 can intermittently clamp the shaft end of the heating corrugated roller 16. When the corrugated cardboard with curved surface and arc shape passes through the heating corrugated roller 16, the curved surface and arc shape change the tension and pressure angle of the heating corrugated roller 16 and other rollers during conveying. It is necessary to pre-tighten the heating corrugated roller 16 by clamping the shaft end of the pneumatic clamp 15 to prevent the corrugated cardboard from curling and deforming during preheating.

[0029] Example 2

[0030] A preheating device combining tip heating and arc plate, which can increase the speed of the tile production line, such as... Figures 1-6 As shown, where Figure 6 The diagram shows a simplified flow chart of the preheating process. When the corrugated cardboard is conveyed through the pre-compression assembly 1, it passes through the top of the upper input guide roller 4 between the upper and lower input guide rollers 4, and then passes through the top of the upper pre-compression guide roller 5 between the upper and lower pre-compression guide rollers 5. The water in the water supply tank of the steam device 3 is heated by the heater to generate steam, which is sprayed from the steam nozzles 9 of the two sets of steam spray plates 8 onto the extended corrugated cardboard for the first preheating. While the corrugated cardboard is preheated by steam, its moisture content increases.

[0031] When the corrugated cardboard is conveyed through the rear pre-pressing assembly 2, it first passes through the conveying guide roller 11 in the shaping guide roller group 6 and is shaped between the front tension roller 12 and the rear tension roller 13. After shaping, it is conveyed into the heating roller assembly 7. The height of the lifting platform 18 and the pneumatic telescopic rod 17 can be adjusted according to the thickness of the corrugated cardboard. The rotation angle of the swing arm frame 14 is driven by the extension and retraction of the pneumatic telescopic rod 17, thereby changing the pressure angle of the heating corrugated roller 16 to adapt to different corrugated cardboard shapes. When the corrugated cardboard has curved or arc-shaped surfaces, the interval time of the pneumatic clamp 15 intermittently clamping the shaft end can be adjusted according to the design dimensions of the curved or arc-shaped surfaces. This increases the pre-tension force when the curved or arc-shaped corrugated cardboard passes through the heating corrugated roller 16. The heating corrugated roller 16 performs secondary preheating of the corrugated cardboard with the help of internal electromagnetic heating, thus completing the preheating process of the corrugated cardboard.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A preheating device combining tip heating and arc plate, which can increase the speed of the tile production line, characterized in that: The device comprises a front pre-press assembly (1), a rear pre-press assembly (2), and a steam device (3) below the front pre-press assembly (1). The front pre-press assembly (1) comprises a group of input guide rollers (4) and a group of pre-press shaped guide rollers (5). The corrugated board can be threaded from above through the input guide rollers (4), then from below the input guide rollers (4) to above the pre-press shaped guide rollers (5), and then from below the pre-press shaped guide rollers (5) to heat the corrugated board with steam generated by the steam device (3). The steam device (3) comprises a water supply tank that can continuously supply water, a heater that can heat water to generate steam, and a steam spraying plate (8) with a plurality of steam spraying heads (9). The steam spraying plate (8) is provided with two groups, and the two groups are respectively located below the input guide rollers (4) and the pre-press shaped guide rollers (5). A plurality of heat-conducting bushings (10) are provided at equal intervals on the pre-press shaped guide rollers (5). The rear pre-press assembly (2) comprises a shaping guide roller group (6) and a heating roller assembly (7). The shaping guide roller group (6) comprises front tension rollers (12), rear tension rollers (13), and conveying guide rollers (11).

2. The combined preheating device for tip heating and arc plate, which can improve the speed of the tile production line, as described in claim 1, is characterized in that: The heating roller assembly (7) comprises a lifting platform (18) that can be lifted and a swing arm frame (14) connected with a plurality of heating corrugated rollers (16). The lifting platform (18) can drive the swing arm frame (14) to move through a pneumatic telescopic rod (17).

3. The preheating device of claim 2, wherein the device is characterized in that: The swing arm frame (14) is provided with a pneumatic clamping sleeve (15) near the shaft end of the heating corrugated roller (16). The pneumatic clamping sleeve (15) can intermittently clamp the shaft end of the heating corrugated roller (16).

Images