Automatic purging device and method for honeycomb preparation

Abstract

The invention belongs to the field of aviation honeycomb manufacturing, and particularly relates to an automatic purging device and method for honeycomb preparation. In the dipping process, lattice holes of the honeycomb are easily blocked, the machinability of the honeycomb is influenced, and the realization of functions is influenced in serious cases. The automatic blowing device comprises a honeycomb lifting system, a transmission system, a mounting system and an air knife system, the honeycomb lifting system comprises a frame, a screen plate and a screen plate lifting mechanism, the screen plate lifting mechanism controls the screen plate to move in or out of the frame in the vertical direction, and a honeycomb block is placed on the screen plate; the transmission system is used for controlling the mounting system to reciprocate in the length direction of the frame; and an air knife system is mounted at the lower end of the mounting system. According to the invention, automatic purging can be realized, and the appearance quality and performance of the honeycomb are improved while the production efficiency is not reduced. The problems of appearance quality and performance reduction caused by hole blockage of the multifunctional honeycomb are solved. The product yield is greatly improved, the cost is saved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aviation honeycomb manufacturing, and particularly relates to an automatic blowing device and method for honeycomb preparation. BACKGROUND

[0002] Aramid paper honeycomb composite material has low density, high strength, good impact resistance, and the advantages of vibration reduction, wave transmission, and strong designability. It has been widely used in aerospace and high-speed trains and other fields, and gradually replaces early metal honeycomb in some structural parts, thereby achieving the purpose of weight reduction and speed increase.

[0003] With the wide application of aramid honeycomb composite material, researchers are increasingly conducting research in the field of multifunctional honeycomb material, such as radar-absorbing honeycomb with radar-absorbing function, heat-conducting honeycomb with high heat conduction, etc. Most of these honeycombs are prepared by solution impregnation method, which is simple, stable and economical.

[0004] However, for multifunctional honeycomb such as radar-absorbing honeycomb, various fillers need to be added to the impregnation solution to achieve the above-mentioned functions such as wave absorption and heat conduction, which makes it more likely to cause cell plugging and other problems during impregnation, affecting the processability of the honeycomb, and in severe cases, affecting the realization of the function. A honeycomb blowing device is urgently needed to solve the problem of honeycomb plugging. SUMMARY

[0005] The present application mainly aims at the plugging problem of the impregnation solution containing fillers during the honeycomb impregnation process, and provides an automatic blowing device and method for honeycomb preparation.

[0006] The present application provides an automatic blowing device for honeycomb preparation, which is used for blowing the impregnated honeycomb cells. The device comprises a honeycomb lifting system, a transmission system, a mounting system and an air knife system. The honeycomb lifting system comprises a frame, a mesh plate and a mesh plate lifting mechanism. The mesh plate lifting mechanism controls the mesh plate to move in and out of the frame in the up-down direction, and the honeycomb block is placed on the mesh plate. The transmission system is used to control the mounting system to move back and forth in the length direction of the frame. The air knife system is installed at the lower end of the mounting system.

[0007] Advantageously, the transmission system comprises a rail frame, a reciprocating screw, a pulley nut assembly, a sliding rail and a power source. The rail frame is installed on the upper side of the frame at both ends, a pair of sliding rails is installed on the rail frame, the reciprocating screw is installed on the upper side of the frame in the middle, the nut of the pulley nut assembly is engaged with the reciprocating screw, the pulley of the pulley nut assembly is arranged on the upper end of the sliding rail, and the power source provides the moving power of the pulley nut assembly.

[0008] Advantageously, the power source adopts a pneumatic pump, and the pneumatic pump is supplied with air through a transmission air inlet pipe.

[0009] Advantageously, the gear belt drive is provided between the pneumatic pump and the reciprocating screw.

[0010] Advantageously, the reciprocating screw has a bidirectional circulation channel.

[0011] Advantageously, the rotation speed of the rotation shaft of the pneumatic pump is adjusted by the gas flow.

[0012] Advantageously, the mounting system comprises an adjusting screw rod and a rhombus chain, the upper end of the rhombus chain is connected with the nut of the pulley nut assembly, and the lower end is connected with the air knife system, and the opening height of the rhombus chain is adjusted by adjusting the length of the rhombus chain by rotating the adjusting screw rod.

[0013] Advantageously, the upper end of the rhombus chain is connected with the nut through a connecting frame.

[0014] Advantageously, the air knife system comprises an air knife air inlet pipe and an air knife.

[0015] The application also provides an automatic blowing method for honeycomb preparation, which utilizes the automatic blowing device, and comprises the following steps: Step 1: placing the shaped honeycomb block on a screen plate; Step 2: lowering the screen plate and the honeycomb block into the impregnation glue solution by the honeycomb lifting system, and the screen plate is completely immersed in the solution; Step 3: after soaking for a period of time, lifting the screen plate and the honeycomb block to be completely above the liquid level of the impregnation solution by the honeycomb lifting system; Step 4: starting the transmission system, controlling the mounting system to reciprocate in the length direction of the frame, and controlling the air knife system to blow the upper surface of the honeycomb block; Step 5: stopping the transmission system, removing and purifying the honeycomb block.

[0016] Beneficial effects: the application can realize automatic blowing, improve the appearance quality and performance of the honeycomb without reducing the production efficiency, solve the appearance quality problem and performance reduction problem of the multifunctional honeycomb caused by hole blockage, greatly improve the product yield, save costs, and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall structure of the automatic blowing device; Fig. 2 It is a schematic diagram of the power part structure.

[0018] 1-frame, 2-rail frame, 3-screen plate, 4-air knife, 5-adjusting screw rod, 6-rhombus chain, 7-pneumatic pump, 8-reciprocating screw, 9-transmission air inlet pipe, 10-gear belt drive, 11-connecting frame, 12-air knife air inlet pipe, 13-pulley nut assembly, 14-sliding rail DETAILED DESCRIPTION As Figs. 1-2 shown for the embodiment of automatic blowing device for honeycomb preparation, including honeycomb lifting system, transmission system, mounting system and air knife system.

[0019] Honeycomb lifting system includes frame 1, screen plate 3 and screen plate lifting mechanism. The screen plate 3 can move up and down along the vertical direction under the action of screen plate lifting mechanism. When the screen plate 3 moves downward, the screen plate 3 drops out of the frame 1 and enters the solution impregnation. After impregnation, the screen plate 3 moves upward and is embedded in the frame 1 for blowing. The screen plate 3 is made of metal wire and is used to place the honeycomb to be blown.

[0020] Transmission system includes track frame 2, pneumatic pump 7, reciprocating screw 8, transmission air pipe 9, gear transmission belt 10, pulley nut assembly 13 and slide rail 14. The track frame 2 is installed on the upper side of the frame 1, and a pair of slide rails 14 is installed on the track frame 2. The reciprocating screw 8 is installed on the upper side of the frame 1, and the reciprocating screw 8 has a bidirectional circulation channel. The nut of the pulley nut assembly 13 is engaged with the reciprocating screw 8, and the pulley of the pulley nut assembly 13 is arranged on the upper end of the slide rail 14. When a certain flow of gas is introduced into the pneumatic pump 7 through the transmission air pipe 9, the rotating shaft of the pneumatic pump 7 rotates, and the rotating speed is adjusted according to the gas flow. The rotating shaft drives the reciprocating screw 8 to rotate through the gear transmission belt 10, and the helical motion is converted into the linear reciprocating motion of the pulley nut assembly 10 through the reciprocating screw 8.

[0021] The mounting system includes adjusting rotary rod 5, diamond chain 6 and connecting frame 11. The upper end of the diamond chain 6 is connected with the pulley nut 10 through the connecting frame 11, and the lower end of the diamond chain is connected with the air knife system. According to the relative position of the honeycomb and the air knife 4, the opening height of the diamond chain 6 is adjusted by adjusting the length of the diamond chain 6 by rotating the adjusting rotary rod 5.

[0022] The air knife system includes air knife air inlet pipe 12 and air knife 4. The gas enters the air knife 4 through the air knife air inlet pipe 12, and then is blown out through the end face of the air knife. The function of the air knife 4 is to convert a large flow of gas into an air surface with a certain length, which can continuously blow the honeycomb cells.

[0023] The automatic blowing method for honeycomb preparation after using the device is as follows: Step 1, place the shaped honeycomb block on the screen plate 3; Step 2, lower the screen plate 3 and the honeycomb block into the impregnation solution completely through the honeycomb lifting system; Step 3, after soaking for a period of time, lift the screen plate 3 and the honeycomb block to be completely above the impregnation solution through the honeycomb lifting system, and in some embodiments, the screen plate 3 is lifted into the frame 1 to a height close to the air knife 4; Step 4, start the pneumatic pump 7, and control the air knife 4 to reciprocally blow the upper surface of the honeycomb block; Step 5, after back and forth blowing the surface of the honeycomb block, stop the air pump 7, remove the honeycomb block and clean it.

[0024] Example 1 An automatic device for honeycomb block blowing includes a honeycomb lifting system, a transmission system, a hanging system and a wind knife system. The frame 1 of the honeycomb lifting system includes 4 supports, with a height of about 1000 mm, and a mesh plate 3 made of metal wire with a length x width of 2500 x 600 mm.

[0025] The air pump 7 of the transmission system has a rotation speed of 1 r / min-60 r / min, and the reciprocating screw 8 has a length of 2500 mm. The transmission air inlet pipe 9 has a diameter of 10 mm. The reciprocating screw 8 is connected to the air pump 7 at one end through the gear transmission belt 10, and the rotation of the air pump 7 drives the rotation of the reciprocating screw 8.

[0026] The diamond chain 6 of the hanging system has a height adjustable from 50 mm to 500 mm.

[0027] The wind knife air inlet pipe 12 of the wind knife system has a diameter of 20 mm, and the wind knife has a length of 650 mm.

[0028] The method for honeycomb block impregnation is as follows: Step 1, place the shaped honeycomb block with a length x width x height of 2400 mm x 550 mm x 300 mm on the mesh plate 3; Step 2, lower the honeycomb block into the impregnation solution through the honeycomb lifting system, and make the honeycomb block completely immersed in the solution. The impregnation solution contains micron-sized silica particles with a solid content of 20%; Step 3, after soaking for 1 min, lift the honeycomb block to a position 100 mm above the liquid level of the impregnation solution; Step 4, start the air pump 7, adjust the flow to 20 L / min, and set the rotation speed to 30 r / min, so that the wind knife 4 reciprocally blows the surface of the honeycomb block; Step 5, after back and forth blowing the surface of the honeycomb block, stop the air pump 7, remove the honeycomb block and clean it. After cleaning, the impregnation solution is uniformly distributed in the cells of the honeycomb block, there is no blockage, and there is no obvious accumulation of impregnation solution. The honeycomb block has a uniform bulk density distribution, with a dispersion CV≤3%. The comprehensive performance is high.

Claims

1. An automatic purging device for honeycomb fabrication, used to purge impregnated honeycomb pores, characterized in that: The device comprises a honeycomb lifting system, a transmission system, a mounting system and an air knife system, the honeycomb lifting system comprises a frame (1), a net plate (3) and a net plate lifting mechanism, the net plate (3) is controlled to move into or out of the frame (1) along the up-down direction by the net plate lifting mechanism, and the honeycomb block is placed on the net plate (3); the transmission system is used for controlling the mounting system to reciprocate in the length direction of the frame (1); the air knife system is installed at the lower end of the mounting system.

2. The automatic purging device according to claim 1, characterized in that: The transmission system comprises a rail frame (2), a reciprocating screw (8), a pulley nut assembly (13), a sliding rail (14) and a power source, the rail frame (2) is installed at the upper two ends of the frame (1), a pair of sliding rails (14) are installed on the rail frame (2), the reciprocating screw (8) is installed at the upper middle of the frame (1), the nut of the pulley nut assembly (13) is engaged with the reciprocating screw (8), the pulley of the pulley nut assembly (13) is arranged on the upper end of the sliding rail (14), and the moving power of the pulley nut assembly (13) is provided by the power source.

3. The automatic purging device of claim 2, wherein: The power source adopts a pneumatic pump (7), and air is supplied to the pneumatic pump (7) through a transmission air inlet pipe (9).

4. The automatic purging device of claim 3, wherein: The pneumatic pump (7) and the reciprocating screw (8) are driven through a gear transmission belt (10).

5. The automatic purging device of claim 4, wherein: The reciprocating screw (8) has a bidirectional circulation channel.

6. The automatic purging device of claim 5, wherein: The rotation speed of the rotating shaft of the pneumatic pump (7) is adjusted by gas flow.

7. The automatic purging device of claim 1, wherein: The mounting system comprises an adjusting rotary rod (5) and a rhombus chain (6), the upper end of the rhombus chain (6) is connected with the nut of the pulley nut assembly (13), the lower end is connected with the air knife system, and the opening height of the rhombus chain (6) is adjusted by adjusting the length of the rhombus chain (6) by rotating the adjusting rotary rod (5) into the rhombus chain (6).

8. The automatic purging device of claim 7, wherein: The upper end of the rhombus chain (6) is connected with the nut through a connecting frame (11).

9. The automatic purging device of claim 8, wherein: The air knife system comprises an air knife air inlet pipe (12) and an air knife (4).

10. An automated purging method for honeycomb fabrication, characterized by, The method utilizes the automatic blowing device according to any one of claims 1-9, comprising the following steps: Step 1, placing the shaped honeycomb block on the net plate (3); Step 2, lowering the net plate (3) and the honeycomb block into the impregnation glue solution by the honeycomb lifting system, and the honeycomb block is completely immersed; Step 3, after soaking for a period of time, lifting the net plate (3) and the honeycomb block to be completely above the liquid level of the impregnation solution by the honeycomb lifting system; Step 4, starting the transmission system, controlling the mounting system to reciprocate in the length direction of the frame (1), and controlling the air knife system to blow the upper surface of the honeycomb block; Step 5, stopping the transmission system, removing and purifying the honeycomb block.

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