A corrugated paper indentation device

Abstract

The present application discloses a corrugated paper creasing device, including a corrugated roller, a heating inner cavity is provided in the corrugated roller, which is used to receive high-temperature steam and condensed water, a steam inlet pipe is provided at one end of the corrugated roller, which is used to transport high-temperature steam into the heating inner cavity; a drainage device is provided in the middle of the heating inner cavity, which is used to collect condensed water; a heat exchange device is provided on the inner wall of the heating inner cavity, which is used to adjust the temperature of the top and bottom of the corrugated roller; and an extrusion device is provided in the heat exchange device, which is used to provide power to the heat exchange device. Through the rolling of the roller, the gravity cylinder in the annular groove rotates synchronously, and when the gravity cylinder at the top rotates downward, the gravity cylinder will gradually slide toward the outer side of the corrugated roller, pulling the deformable rubber here to deform into the annular groove, so that the deformed deformable rubber here and the friction rubber here form a low-pressure space, so that the condensed water or water film adhering to the inner wall of the heating inner cavity around it flows into the low-pressure space under suction.

Description

Technical Field

[0001] This application relates to the technical field of cardboard processing, and particularly to a corrugated paper indentation device. Background Art

[0002] Corrugated paper is a plate-shaped object formed by bonding a facing paper and corrugated paper with corrugations formed by processing through a corrugating roll. Corrugated paper is generally divided into three layers, namely the core paper in the middle and the facing papers surrounding both sides of the core paper. The core paper is processed into a corrugated shape by the corrugating roll to improve the overall strength of the corrugated paper.

[0003] A corrugating roll is a roll with corrugations on its surface, generally divided into an upper roll and a lower roll. When the core paper passes through the pressing surface of the upper roll and the lower roll, the corrugations on the corrugating roll will squeeze the core paper, causing the core paper to be pressed out with uniform corrugations. In this process, it is necessary to heat the upper roll. Since steam heating has low cost and good safety performance, steam heating is generally used for heating the upper roll.

[0004] In the existing steam-heated corrugating roll, a relatively large cavity is opened inside the corrugating roll, and then high-temperature steam is input into the cavity through a pipeline. At this time, the high-temperature steam in the cavity will continuously exchange heat with the inner wall of the corrugating roll, thereby heating and raising the temperature of the entire corrugation. In this process, the core paper passing through the corrugating roll will absorb the heat on the corrugating roll, and the high-temperature steam will release heat and turn into condensed water under continuous heat exchange, which is stored at the bottom of the inner cavity of the roll. Then, the condensed water is discharged through a siphon under the steam pressure. However, this process takes a long time. Therefore, a liquid water film will be formed on the inner wall of the roll, hindering the heat transfer efficiency of the steam. Especially at the bottom of the roll, affected by the stored water, the temperature at the bottom of the roll is always lower than that of other parts. Uneven heating easily causes the roll to have a "banana effect", or a necking phenomenon where the two sides of the roll expand thermally and the middle contracts. At the same time, the bottom of the corrugating roll contacts the core paper, which results in a smaller heat absorption of the core paper, a smaller pressure of the deformed roll on the core paper, and affects the processing efficiency and finished product quality of the core paper. Summary of the Invention

[0005] This application provides a corrugated paper indentation device, which has the advantages of a gravity cylinder sliding and pulling a deformable rubber, the deformable rubber deforming to change the air flow state in the annular groove, the deformed deformable rubber and the friction rubber forming a low-pressure space to attract the surrounding condensed water, the deformable rubber expanding to open the friction rubber to form a protrusion, the protrusion guiding the condensed water to slide down, and the friction rubber rubbing the deformable rubber to converge the condensed water, so as to solve the problems of temperature difference caused by the accumulation of condensed water in the corrugating roll, the formation of a water film on the inner wall of the corrugating roll affecting heat transfer, and the large heat consumption at the contact part between the corrugating roll and the core paper.

[0006] To achieve the above object, the present application adopts the following technical solutions: A corrugated paper indentation device includes a corrugated roll. A heating cavity is provided inside the corrugated roll for receiving high-temperature steam and condensed water. An inlet steam pipe is provided at one end of the corrugated roll for conveying high-temperature steam into the heating cavity;

[0007] A drainage device is provided in the middle of the heating cavity for collecting condensed water;

[0008] A heat exchange device is provided on the inner wall of the heating cavity for adjusting the temperatures at the top and bottom of the corrugated roll;

[0009] An extrusion device is provided inside the heat exchange device for providing power to the heat exchange device;

[0010] Friction rubber is provided on the heat exchange device for cooperating with the extrusion device and the heat exchange device to absorb the condensed water on the inner wall of the heating cavity.

[0011] Preferably, the drainage device includes a converging plate fixedly connected to the middle of both ends of the heating cavity for receiving condensed water. A drain pipe is fixedly connected to the middle of the top end of the converging plate. Water absorption openings are provided on both sides of the drain pipe for discharging the condensed water accumulated on the converging plate.

[0012] Preferably, both sides of the converging plate are close to the inner side wall of the heating cavity for increasing the water receiving range of the converging plate. The positions of both sides of the converging plate are higher than the middle position, so that the condensed water falling on the converging plate slides towards the middle of the converging plate and converges.

[0013] Preferably, the heat exchange device includes annular grooves evenly distributed in the upper part of the heating cavity. A deformable rubber is fixedly connected to the groove opening of the annular groove. A gas is filled in the closed space formed by the annular groove and the deformable rubber for heat exchange with the high-temperature steam and the corrugated roll.

[0014] Preferably, the extrusion device includes evenly distributed limiting rods fixedly connected to the bottom of the annular groove. A gravity cylinder is movably sleeved on the limiting rods, so that when the force direction changes, the gravity cylinder slides on the limiting rods. The sleeved part of the limiting rod and the gravity cylinder is T-shaped for limiting the sliding range of the gravity cylinder.

[0015] Preferably, one end of the gravity cylinder facing the center of the heating cavity is fixedly connected to one end of the deformable rubber facing the bottom of the annular groove, so that the gravity cylinder pulls the deformable rubber when sliding.

[0016] Preferably, two symmetric friction rubbers are provided at the groove opening of the annular groove. A drainage groove is formed between the two friction rubbers for providing space for the expansion of the deformable rubber.

[0017] Preferably, the friction rubber covers the deformable rubber and is used to receive the power provided by the deformable rubber. The width value of the drainage groove is small and is used to cooperate with the deformable rubber to form a low-pressure space.

[0018] Preferably, the part of the friction rubber close to the gravity cylinder is not fixedly connected to the notch of the annular groove, and the part of the friction rubber far from the gravity cylinder is fixedly connected to the notch of the annular groove to prevent the displacement of the friction rubber.

[0019] Preferably, evenly distributed water guide grooves are formed at one end of the deformable rubber facing the center of the heating cavity. The water guide grooves are on the same straight line as the gravity cylinder and are used to guide the condensed water on the deformable rubber and the friction rubber.

[0020] In a corrugated paper indentation device provided by the present application, through the rolling of the roller, the gravity cylinders in the annular groove rotate synchronously. When the gravity cylinder at the upper part rotates downward, the gravity cylinder will gradually slide outward in the direction of the corrugating roller, pulling the deformable rubber here to deform into the annular groove, so that the deformed deformable rubber here forms a low-pressure space with the friction rubber here, causing the condensed water or water film adhering to the inner wall of the heating cavity around to flow into the low-pressure space under suction and adhere to the deformable rubber and the friction rubber here, so that the condensed water cannot form a water film or accumulate condensed water on the inner wall of the corrugating roller, avoiding the influence of the water film and condensed water on the heat exchange of the corrugating roller.

[0021] At the same time, when the gravity cylinder at the lower part rotates upward, the gravity cylinder will gradually slide in the direction of the center of the heating cavity, causing the gravity cylinder to pull the deformable rubber here to deform and expand in the direction of the center of the heating cavity, so that the deformable rubber here presses on the two friction rubbers here and gradually passes through the drainage groove, causing the parts of the two friction rubbers here to expand and deform to both sides, rub against the deformable rubber, converge the water adhering to the opposite surfaces of the friction rubber and the deformable rubber, and then discharge the converged water from the water guide groove and fall onto the converging plate, avoiding the problem that the condensed water accumulates on the deformable rubber and the friction rubber and affects the heat exchange of the corrugating roller.

[0022] At the same time, through the continuous deformation of the deformable rubber, the deformable rubber continuously presses the gas in the annular groove, causing the gas in the annular groove to continuously flow and form a chaotic turbulent flow, so that the hot air flow at the upper part can be mixed with the relatively cold air flow at the lower part (the air flow at the lower part needs to exchange heat with the core paper, so the temperature is lower), keeping the air flow at the lower part at a high temperature state all the time. Therefore, when the corrugating roller contacts the core paper and releases heat, the corrugating roller can still be quickly reheated through the high-temperature air flow, reducing the temperature difference between the middle and both sides of the corrugating roller. Description of the Drawings

[0023] The accompanying drawings, which form a part of the specification, illustrate the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0024] Referring to the accompanying drawings, the present disclosure can be more clearly understood from the following detailed description, wherein:

[0025] Figure 1 It is a schematic structural diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the position of the deformation rubber of the present invention;

[0027] Figure 3 It is a schematic structural diagram of the converging plate of the present invention;

[0028] Figure 4 It is a schematic structural diagram of the deformation rubber of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the friction rubber of the present invention;

[0030] Figure 6 It is a schematic diagram of the cooperation between the limiting rod and the gravity cylinder of the present invention.

[0031] 1. Corrugated roller; 2. Heating inner cavity; 3. Steam inlet pipe; 4. Converging plate; 5. Drain pipe; 6. Water suction port; 7. Annular groove; 8. Limiting rod; 9. Gravity cylinder; 10. Deformation rubber; 101. Water guide groove; 11. Friction rubber; 12. Drainage groove. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0033] Embodiment 1

[0034] Please refer to Figures 1 to 3, A corrugated paper indentation device, including a corrugated roll 1. Below the corrugated roll 1 is the core paper. Inside the corrugated roll 1 is provided with a heating cavity 2. One end of the corrugated roll 1 is provided with a steam inlet pipe 3. The steam inlet pipe 3 extends into the heating cavity 2, so that high-temperature steam is introduced into the heating cavity 2 through the steam inlet pipe 3, conducts heat exchange with the corrugated roll 1, and stores the condensed water formed by the heat release of the high-temperature steam. In the middle of both ends of the heating cavity 2 are fixedly connected with converging plates 4. The positions on both sides of the converging plate 4 are higher than the middle position. The two sides of the converging plate 4 are close to the inner side wall of the heating cavity 2, so that the condensed water from the deformation rubber 10 and the friction rubber 11 can fall on the converging plate 4 and converge towards the middle of the converging plate 4. In the middle of the top of the converging plate 4 is fixedly connected with a drain pipe 5. On both sides of the drain pipe 5 are provided with water absorption ports 6, so that the condensed water converged in the middle of the converging plate 4 can enter the drain pipe 5 through the water absorption ports 6 and then be drained away through the drain pipe 5.

[0035] Refer to Figures 1 to 2 , Figure 4 , Figure 6, on the inner wall of the heating cavity 2, evenly distributed annular grooves 7 are provided. At the bottom of the annular groove 7, evenly distributed limiting rods 8 are fixedly connected. A gravity cylinder 9 is movably sleeved on the limiting rod 8. The sleeved part of the limiting rod 8 and the gravity cylinder is T-shaped, so that when the gravity cylinder 9 slides on the limiting rod 8, it will not break away from the limiting rod 8. One end of the gravity cylinder 9 facing the center of the heating cavity 2 is fixedly connected with a deformable rubber 10, so that when the corrugating roll 1 rotates, the gravity cylinder 9 can rotate synchronously. When the gravity cylinder 9 above rotates downward, the gravity cylinder 9 will gradually slide outward from the corrugating roll 1, pulling the deformable rubber 10 here to deform into a groove in the annular groove 7. When the gravity cylinder 9 below rotates upward, the gravity cylinder 9 will gradually slide toward the center of the heating cavity 2, pulling the deformable rubber 10 here to expand and deform toward the center of the heating cavity 2 to form a bulge. At this time, the deformed deformable rubber 10 will pull the surface of the deformable rubber 10, destroying the water film formed on the surface of the deformable rubber 10. Moreover, the bulge formed by the bulge causes the surrounding condensed water to slide and converge toward the bulge of the bulge, and then fall onto the converging plate. And the water adhering to the wall of the heating cavity 2 around will flow toward the surface of the deformable rubber 10 that expands and deforms under the attraction of water, destroying the formation of the water film on the wall of the heating cavity 2. The deformable rubber 10 is fixedly connected to the notch of the annular groove 7. A gas is filled in the closed space formed by the annular groove 7 and the deformable rubber 10. The gas can be air, which is mainly used to exchange heat with high-temperature steam and then transfer the heat to the corrugating roll 1. At the same time, when the deformable rubber 10 is continuously deformed under the pull of the gravity cylinder 9, the deformable rubber 10 continuously squeezes the gas in the annular groove 7, causing the gas in the annular groove 7 to continuously flow to form a chaotic turbulent flow, so that the hot air flow above can be mixed with the relatively cold air flow below, keeping the air flow below at a high temperature state all the time. Thus, when the corrugating roll 1 contacts the core paper and releases heat, the corrugating roll 1 can still be quickly warmed up by the high-temperature air flow, reducing the temperature difference between the middle and both sides of the corrugating roll 1.

[0036] Embodiment Two

[0037] On the basis of Embodiment One

[0038] Please refer to Figure 2 , Figure 4 , on one end of the deformable rubber 10 facing the center of the heating cavity 2, evenly distributed water guide grooves 101 are provided. The water guide grooves 101 are on the same straight line as the gravity cylinder 9, so that when the gravity cylinder 9 pulls the deformable rubber 10 to expand and deform toward the center of the heating cavity 2, the water guide grooves 101 here can also deform and expand in diameter.

[0039] Refer to Figures 1 to 2 , Figure 5, there are two symmetrical friction rubbers 11 at the notch of the annular groove 7. When the two friction rubbers 11 on one annular groove 7 open, a drainage groove 12 is formed. The width of the drainage groove 12 is small. The friction rubber 11 covers the deformation rubber 10. The part of the friction rubber 11 close to the gravity cylinder 9 is not fixedly connected to the notch of the annular groove 7, and the part of the friction rubber 11 far from the gravity cylinder 9 is fixedly connected to the notch of the annular groove 7. When the deformation rubber 10 here expands towards the center of the heating inner cavity 2, it will squeeze on the two friction rubbers 11 here and gradually push open the drainage groove 12, causing the drainage groove 12 to expand, so that the expanded part of the deformation rubber 10 gradually passes through the expanded drainage groove 12, causing the parts of the two friction rubbers 11 here to expand and deform towards both sides, and friction with the deformation rubber 10 to converge the water adhered to the opposite surfaces of the friction rubber 11 and the deformation rubber 10, and then make the converged water drain from the water guide groove 101 and fall onto the converging plate 4. At the same time, when the deformation rubber 10 here expands towards the annular groove 7 to form a groove, a low-pressure space will be formed with the friction rubber 11 here, so that the condensed water or water film adhered to the inner wall of the heating inner cavity 2 around will flow into the low-pressure space under suction and adhere to the deformation rubber 10 and the friction rubber 11 here, so that the condensed water cannot form a water film or accumulate condensed water on the inner wall of the corrugating roll 1.

Claims

1. A corrugated paper indentation device, characterized in that, it includes a corrugating roll (1), a heating inner cavity (2) is opened in the corrugating roll (1) for receiving high-temperature steam and condensed water, and a steam inlet pipe (3) is provided at one end of the corrugating roll (1) for conveying high-temperature steam into the heating inner cavity (2); a drainage device is provided in the middle of the heating inner cavity (2) for collecting condensed water; a heat exchange device is provided on the inner wall of the heating inner cavity (2) for adjusting the temperatures at the top and bottom of the corrugating roll (1); the heat exchange device includes uniformly distributed annular grooves (7) opened on the inner surface of the heating inner cavity (2), and a deformable rubber (10) is fixedly connected to the notch of the annular groove (7), and a gas is filled in the closed space formed by the annular groove (7) and the deformable rubber (10) for heat exchange with the high-temperature steam and the corrugating roll (1); an extrusion device is provided in the heat exchange device, and the extrusion device includes uniformly distributed limiting rods (8) fixedly connected to the bottom of the annular groove (7), and a gravity cylinder (9) is movably sleeved on the limiting rods (8), so that when the force direction of the gravity cylinder (9) changes, it slides on the limiting rods (8), and the socket joint of the limiting rods (8) and the gravity cylinder is T-shaped for limiting the sliding range of the gravity cylinder (9); a friction rubber (11) is provided on the heat exchange device for cooperating with the extrusion device and the heat exchange device to absorb the condensed water on the inner wall of the heating inner cavity (2); when the corrugating roll (1) rotates, the gravity cylinder (9) can rotate synchronously.

2. The corrugated paper indentation device according to claim 1, characterized in that, the drainage device includes a converging plate (4) fixedly connected to the middle of both ends of the heating inner cavity (2) for receiving condensed water, a drain pipe (5) is fixedly connected to the middle of the top end of the converging plate (4), and water absorption ports (6) are opened on both sides of the drain pipe (5) for discharging the condensed water accumulated on the converging plate (4).

3. The corrugated paper indentation device according to claim 2, characterized in that, both sides of the converging plate (4) are close to the inner side wall of the heating inner cavity (2) for increasing the water receiving range of the converging plate (4), and the positions of both sides of the converging plate (4) are higher than the middle position, so that the condensed water falling on the converging plate (4) slides and converges towards the middle of the converging plate (4).

4. The corrugated paper indentation device according to claim 1, characterized in that, one end of the gravity cylinder (9) facing the center of the heating inner cavity (2) is fixedly connected to one end of the deformable rubber (10) facing the bottom of the annular groove (7), so that the gravity cylinder (9) pulls the deformable rubber (10) when sliding.

5. The corrugated paper indentation device according to claim 1, characterized in that, two symmetric friction rubbers (11) are provided at the notch of the annular groove (7), and a drainage groove (12) is formed when the two friction rubbers (11) are opened for providing a space for the expansion of the deformable rubber (10).

6. The corrugated paper indentation device according to claim 5, characterized in that, the friction rubber (11) covers the deformable rubber (10) for receiving the power provided by the deformable rubber (10).

7. The corrugated paper indentation device according to claim 5, characterized in that, the part of the friction rubber (11) close to the gravity cylinder (9) is not fixedly connected to the notch of the annular groove (7), and the part of the friction rubber (11) far from the gravity cylinder (9) is fixedly connected to the notch of the annular groove (7) to prevent the displacement of the friction rubber (11).

8. The corrugated paper indentation device according to claim 5, characterized in that, a uniformly distributed water guide groove (101) is provided at one end of the deformation rubber (10) facing the center of the heating cavity (2), and the water guide groove (101) is on the same straight line as the gravity cylinder (9) to guide the condensed water on the deformation rubber (10) and the friction rubber (11).

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