Corrugated board spraying device

Abstract

The utility model discloses a corrugated board spraying device which comprises a cross beam plate and pipe supports arranged at the two ends of the surface of the cross beam plate, two multi-point spraying structures distributed up and down are installed on the outer walls of the same sides of the two pipe supports, and a U-shaped pipe used for keeping a liquid path unobstructed is installed at one end of each multi-point spraying structure. An F-shaped liquid inlet pipe is mounted at the other ends of the two multi-point spraying structures, and a filter is mounted at the bottom end of the F-shaped liquid inlet pipe. The two atomization areas are formed below the paperboard, the contact area of water mist is increased, it is ensured that water can permeate the paperboard more effectively, and therefore the overall water content of the paperboard is improved, due to the design of the two multi-point-position spraying structures, the spraying angles are staggered, a plurality of different atomization paths are formed, and the atomization effect is improved. When the paperboard passes through the front spraying area and the rear spraying area, different sprayers work at the same time, and water mist can be sprayed in a wider area.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated cardboards, in particular to a corrugated cardboard spray device. Background Art

[0002] Spray devices in corrugated cardboard processing are primarily used for humidification to prevent cracking during the die-cutting process, improving the cardboard's processing quality and subsequent printing results. This device sprays fine water droplets to increase the cardboard's moisture content, thereby increasing its flexibility and reducing the risk of brittle fracture. Furthermore, proper humidity improves the cardboard's ink absorption, ensuring uniform and vibrant printing. At the same time, humidification enhances the cardboard's compressive strength, reducing the risk of damage during stacking and transportation. The basic structure of this type of spray device includes a water tank, water pump, nozzle, control system, and bracket. The water tank stores water, while the water pump draws and delivers it to the nozzle, ensuring spray stability and pressure. The nozzle is a key component for atomizing water. Its specific design converts the water flow into fine droplets, ensuring uniform spraying. The flow control valve, pressure sensor, and PLC controller in the control system enable operators to flexibly adjust the spray frequency, flow rate, and timing to meet the humidity requirements of different cardboard types.

[0003] For example, a spray device for corrugated cardboard production disclosed in the authorization announcement number CN211994458U includes a fuselage, a belt conveyor, a hydraulic lift and a support frame. The belt conveyor is fixedly installed at the bottom end of the fuselage by bolts, the hydraulic lift is fixedly installed at the top end of the fuselage by bolts, the support frame is fixedly installed at the bottom end of the hydraulic lift by bolts, a plurality of upper sprayers are fixedly installed at the top end of the support frame by bolts, side sprayers are provided on both sides of the support frame, an opening is provided at the top end of the fuselage, baffles are provided on both sides of the fuselage, and the baffles are fixedly installed above by bolts. It is equipped with a spring, which can spray evenly to make the corrugated paper moist and soft as a whole, and prevent the corrugated paper from cracking near the edges. However, the above technical solution only performs one atomization and humidification treatment when the corrugated paper passes through the atomization area of ​​the sprayer. The corrugated paper after watermarking is often transferred faster, and the water mist cannot quickly and fully penetrate the paperboard, resulting in insufficient humidity in some areas and failing to meet the expected standards. This uneven humidity distribution causes some parts to have cracking lines or uneven ink absorption due to too low humidity in subsequent processing links, such as die-cutting and printing, thereby affecting the overall quality of the product. Utility Model Content

[0004] The purpose of the utility model is to provide a corrugated cardboard spray device, which adds two multi-point spray structures that spray upward at the starting section of the corrugated cardboard conveyor line. The spray angles of the multi-point spray structures are staggered. When the sensing unit senses the corrugated cardboard, the PLC control panel controls the solenoid valve to be normally open, so that water source enters the multi-point spray structure and is sprayed out in atomized form. At this time, the two multi-point spray structures form two regional atomization zones below the corrugated cardboard to wait for the corrugated cardboard to enter in sequence, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a corrugated cardboard spray device, comprising a crossbeam plate and pipe supports arranged at both ends of the crossbeam plate surface, two multi-point spray structures distributed up and down are installed on the outer wall on the same side of the two pipe supports, one end of the two multi-point spray structures is installed with a U-shaped tube for keeping the liquid path unobstructed, the other end of the two multi-point spray structures is installed with an F-type liquid inlet pipe, and the bottom end of the F-type liquid inlet pipe is installed with a filter, and the end of the filter away from the F-type liquid inlet pipe is installed with an electromagnetic valve, sensing units for detecting cardboard are installed on both sides of the crossbeam plate surface, and a PLC control panel is provided on one side of the crossbeam plate surface, the output end of the PLC control panel is electrically connected to the input end of the sensing unit, and the input end of the electromagnetic valve is electrically connected to the output end of the PLC control panel.

[0006] Preferably, Y-axis distance adjusters for controlling the Y-axis position of the pipe support are provided on both sides of the surface of the crossbeam plate.

[0007] Preferably, the Y-axis distance adjuster includes a support arm fixed to one end of the surface of the crossbeam plate, a guide column slidably installed inside the support arm, and a locking pin installed at the top of the support arm, the bottom end of the locking pin abuts against the upper surface of the guide column, and one end of the guide column passes through the outside of the support arm and is fixedly connected to the outer wall of one side of the pipe support.

[0008] Preferably, the sensing unit includes a column fixed on one side of the beam plate surface, a support bolted to one end of the column surface, and a photoelectric switch installed on the outer wall of one side of the support, and the output end of the photoelectric switch is electrically connected to the input end of the PLC control panel.

[0009] Preferably, the multi-point spray structure includes a straight pipe installed on the outer wall of one side of the pipe support and a plurality of atomizing nozzles installed on the surface of the straight pipe at equal intervals.

[0010] Preferably, the angle between the extended lines of the central axes of the two atomizing nozzles at the upper and lower positions is 20 to 70 degrees.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the corrugated cardboard spray device is provided with a multi-point spray structure, a solenoid valve, an F-shaped liquid inlet pipe and other structures that cooperate with each other, so that two atomization areas can be formed under the cardboard, thereby increasing the contact area of ​​the water mist and ensuring that the moisture can penetrate the cardboard more effectively, thereby improving the overall moisture content of the cardboard. The design of the two multi-point spray structures makes the spray angles staggered, thereby forming multiple different atomization paths. When the cardboard passes through the front and rear spray areas, different nozzles work simultaneously, and water mist can be sprayed over a wider area, avoiding the problem of too low humidity in a specific area. The uniform humidity distribution not only improves the processing quality of the cardboard, but also ensures stability in the subsequent printing and die-cutting processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model Figure 4 .

[0017] In the figure: 1. Crossbeam; 2. Y-axis distance adjuster; 201. Support arm; 202. Guide column; 203. Locking pin; 3. Pipe support; 4. Multi-point spray structure; 401. Straight pipe; 402. Atomizing nozzle; 5. U-shaped pipe; 6. F-type liquid inlet pipe; 7. Filter; 8. Solenoid valve; 9. PLC control panel; 10. Sensing unit; 1001. Column; 1002. Support; 1003. Photoelectric switch. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-5The utility model provides an embodiment: a corrugated cardboard spray device, comprising a crossbeam 1 and pipe supports 3 arranged at both ends of the surface of the crossbeam 1, two multi-point spray structures 4 distributed up and down are installed on the outer wall of the same side of the two pipe supports 3, one end of the two multi-point spray structures 4 is installed with a U-shaped tube 5 for keeping the liquid path unobstructed, the other end of the two multi-point spray structures 4 is installed with an F-type liquid inlet pipe 6, and the bottom end of the F-type liquid inlet pipe 6 is installed with a filter 7, and the end of the filter 7 away from the F-type liquid inlet pipe 6 is installed with an electromagnetic valve 8, sensing units 10 for detecting cardboard are installed on both sides of the surface of the crossbeam 1, and a PLC control panel 9 is provided on one side of the surface of the crossbeam 1, the output end of the PLC control panel 9 is electrically connected to the input end of the sensing unit 10, and the input end of the electromagnetic valve 8 is electrically connected to the output end of the PLC control panel 9;

[0020] During the entire process, the PLC control panel 9 not only controls the opening and closing of the solenoid valve 8 according to the movement of the cardboard, but also adjusts the intensity and time of the spray as needed. For example, when the cardboard moves too fast, the PLC control panel 9 will increase the duration of the spray of the solenoid valve 8 and the multi-point spray structure 4 to ensure that the water mist can be fully absorbed by the cardboard, avoiding subsequent processing problems caused by insufficient humidity;

[0021] Both sides of the surface of the crossbeam plate 1 are provided with Y-axis distance adjusters 2 for controlling the Y-axis position of the pipe support 3;

[0022] The Y-axis distance adjuster 2 includes a support arm 201 fixed to one end of the surface of the crossbeam plate 1, a guide column 202 slidably installed inside the support arm 201, and a locking pin 203 installed at the top of the support arm 201. The bottom end of the locking pin 203 abuts against the upper surface of the guide column 202, and one end of the guide column 202 passes through the outside of the support arm 201 and is fixedly connected to the outer wall of one side of the pipe support 3. The staff can manually slide the guide column 202 so that the guide column 202 drives the pipe support 3, the multi-point spray structure 4, the F-type liquid inlet pipe 6 and other structures to slide in the Y-axis direction, thereby adjusting the positions of the multi-point spray structure 4, the F-type liquid inlet pipe 6 and other components in the Y-axis direction, and then use the locking pin 203 to lock the guide column 202;

[0023] The sensing unit 10 includes a column 1001 fixed to one side of the surface of the crossbeam 1, a support 1002 bolted to one end of the column 1001, and a photoelectric switch 1003 mounted on the outer wall of one side of the support 1002. The output end of the photoelectric switch 1003 is electrically connected to the input end of the PLC control panel 9. The photoelectric switch 1003 consists of a light-emitting element and a receiving element. The light-emitting element emits light of a certain wavelength, usually infrared light or visible light. When the light encounters an object such as corrugated cardboard, it is reflected or blocked, thereby affecting the intensity and time it takes for the light to reach the receiving element. The PLC control panel 9 determines whether the cardboard is in the predetermined position based on the received electrical signal. If the signal reaches a set threshold, the system will determine that the cardboard has passed the photoelectric switch 1003, thereby controlling the opening and closing of the solenoid valve 8.

[0024] The multi-point spray structure 4 includes a straight tube 401 installed on the outer wall of one side of the pipe support 3 and several equally spaced atomizing nozzles 402 installed on the surface of the straight tube 401. The angle between the extended lines of the central axes of the two atomizing nozzles 402 at the upper and lower positions is 20 to 70 degrees. When the solenoid valve 8 is in the normally open state, clean water enters two of the straight tubes 401 through the filter 7 and the F-shaped liquid inlet pipe 6, and the U-shaped tube 5 serves to connect the other straight tube 401. Then, clean water under high pressure is sprayed out through each atomizing nozzle 402. Fine water droplets quickly diffuse through the air and penetrate into the cardboard, enhancing the flexibility of the cardboard.

[0025] When the embodiment of the present application is in use, the staff first connects the solenoid valve 8 to the external water supply end, such as a water pump, through a water pipe. At this time, the staff can turn on the water pump and use the water pump and water pipe to pump clean water into the solenoid valve 8, the filter 7, the F-type liquid inlet pipe 6, the multi-point spray structure 4, and the U-shaped tube 5 to ensure a stable water supply. In this process, the design of the F-type liquid inlet pipe 6 enables water to flow into the multi-point spray structure 4 quickly and smoothly, while the U-shaped tube 5 is responsible for evenly distributing the water to the two multi-point spray structures 4. Before the water flows into the multi-point spray structure 4, it is filtered through the filter 7 to remove impurities and particles in the water. This step ensures the normal operation of the spray structure and avoids clogging of the nozzle, thereby ensuring uniform atomization and spraying of the water mist. Effect: When the sensing unit 10 detects that the corrugated cardboard enters the device, it will immediately transmit the signal to the PLC control panel 9. According to the instruction of the PLC control panel 9, the solenoid valve 8 will be activated and in the normally open state, opening the water flow channel. At this time, the filtered water begins to flow through the U-tube 5 to the multi-point spray structure 4. The efficient response of the sensing unit 10 and the solenoid valve 8 enables the device to spray instantly when the cardboard passes, ensuring the synchronization and effectiveness of the humidification treatment. After the water flow enters the multi-point spray structure 4, since the nozzles in the two multi-point spray structures 4 are respectively set at different angles, two spray areas that are staggered front and back are formed, so that the water mist can cover a larger cardboard surface and improve the wetting uniformity.

Claims

1. A corrugated cardboard spray device, characterized in that: The invention comprises a crossbeam (1) and pipe supports (3) arranged at both ends of the crossbeam (1) surface; two multi-point spray structures (4) distributed in an upper and lower direction are installed on the outer wall of the same side of the two pipe supports (3); one end of the two multi-point spray structures (4) is installed with a U-shaped tube (5) for keeping the liquid path unobstructed; the other end of the two multi-point spray structures (4) is installed with an F-type liquid inlet pipe (6); a filter (7) is installed at the bottom end of the F-type liquid inlet pipe (6); an electromagnetic valve (8) is installed at one end of the filter (7) away from the F-type liquid inlet pipe (6); sensing units (10) for detecting cardboard are installed on both sides of the crossbeam (1) surface; a PLC control panel (9) is provided on one side of the crossbeam (1) surface; the output end of the PLC control panel (9) is electrically connected to the input end of the sensing unit (10); and the input end of the electromagnetic valve (8) is electrically connected to the output end of the PLC control panel (9).

2. A corrugated cardboard spray device according to claim 1, characterized in that: Y-axis distance adjusters (2) for controlling the Y-axis position of the pipe support (3) are provided on both sides of the surface of the crossbeam plate (1).

3. The corrugated cardboard spray device according to claim 2, characterized in that: The Y-axis distance adjuster (2) comprises a support arm (201) fixed to one end of the surface of the crossbeam plate (1), a guide column (202) slidably mounted inside the support arm (201), and a locking pin (203) mounted on the top end of the support arm (201), wherein the bottom end of the locking pin (203) abuts against the upper surface of the guide column (202), and one end of the guide column (202) penetrates to the outside of the support arm (201) and is fixedly connected to an outer wall of one side of the pipe support (3).

4. The corrugated cardboard spray device according to claim 1, characterized in that: The sensing unit (10) comprises a column (1001) fixed to one side of the surface of the crossbeam plate (1), a support (1002) bolted to one end of the surface of the column (1001), and a photoelectric switch (1003) mounted on an outer wall of one side of the support (1002); the output end of the photoelectric switch (1003) is electrically connected to the input end of the PLC control panel (9).

5. The corrugated cardboard spray device according to claim 1, characterized in that: The multi-point spray structure (4) comprises a straight tube (401) mounted on the outer wall of one side of the tube support (3) and a plurality of atomizing nozzles (402) mounted on the surface of the straight tube (401) at equal intervals.

6. The corrugated cardboard spray device according to claim 5, characterized in that: The included angle between the extended lines of the central axes of the two atomizing nozzles (402) at the upper and lower positions is 20 to 70 degrees.

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