CN216175807U - Integrated three-dimensional metal net and production equipment thereof - Google Patents

Abstract

An integrally formed three-dimensional metal net and production equipment thereof belong to the technical field of metal nets for lightning protection and electromagnetic shielding. The X and Y directions of the metal net are formed by arranging and combining rhombic meshes with uniform sizes, one surface of the Z-axis direction has a convex structure at the intersection point of the rhombuses, and the other surface of the Z-axis direction is smooth. The production equipment of the metal mesh sequentially comprises an unreeling machine, a hole cutting and stretching device, a deviation correcting device, a rolling device, an anti-corrosion treatment device and a reeling machine, wherein a metal foil coil is placed on the unreeling machine and is treated by a flow device, and a coiled metal mesh can be obtained on the reeling machine. The Z-axis protrusion of the metal net is firmly combined with the composite material, and when the metal net is struck by lightning, lightning current can be rapidly dispersed along X, Y, Z directions, so that the lightning protection effect is good. The metal net is of an integrally formed three-dimensional structure, the production equipment is good in synchronous matching performance, the production efficiency is high, the metal net can be subjected to anti-corrosion treatment, the service life is long, and the application scene is wide.

Description

Integrated three-dimensional metal net and production equipment thereof

Technical Field

The invention relates to the technical field of metal nets and metal net manufacturing, in particular to a metal net for lightning stroke protection and electromagnetic shielding used for composite materials.

Background

The composite material is widely used in various industries due to the strong specific strength and specific modulus and good performances of fatigue resistance, shock absorption, wear resistance, heat resistance, crack resistance and the like, and has more applications in the fields of wings and airframes of airplanes and wind power blades of wind generating sets. However, the composite material is an insulating material, working environments are all parts exposed in the air for a long time, such as aircrafts and wind power blades, when lightning strike occurs, if lightning strike protection does not exist, irreversible damage is caused to the composite material, especially in recent years, carbon fibers are applied more and more because the carbon fiber composite material has the advantages of light weight, high strength, high modulus and the like, but carbon fibers are poor conductors and are easy to attract lightning, the lightning cannot be transmitted in time, and the caused damage is undoubtedly huge, so the lightning strike protection is required to the composite material; meanwhile, more metal parts and circuit structures exist in the airplane, and electromagnetic shielding is needed. The metal mesh for lightning stroke protection and electromagnetic shielding in the current market has the following problems: (1) the woven structure metal mesh is formed by weaving metal wires in the warp direction and the weft direction, and the structure can be instantaneously collapsed due to large resistance at the lap joint after being hit by lightning. (2) The pressed metal net has smooth surface, poor adhesion with the composite material and easy shedding. (3) The finished metal net product has poor corrosion resistance, and cannot be subjected to corrosion prevention treatment during production. (4) The punching structure has large metal net thickness and large hardness of the finished metal net product, and is difficult to follow the shape of a die when being laid. (5) The production process and equipment for manufacturing the metal mesh are complex, and the production efficiency is low.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides an integrally-formed three-dimensional metal net and production equipment thereof, wherein the metal net is of an integrally-formed three-dimensional structure, and a Z-axis bulge and the metal net are integrally formed, so that the influence caused by the increase of resistance due to overlapping is avoided; meanwhile, the Z-axis bulge increases the bonding property of the metal mesh and the composite material, and the metal mesh is not easy to fall off. After rolling, the metal net is thinned to form Z-axis bulges, so that the metal net can have better shape following performance when being laid. In addition, the production equipment has good synchronous matching property and high production efficiency, and the metal mesh can be subjected to antiseptic treatment.

The technical scheme adopted by the invention is as follows: three-dimensional metal mesh of integrated into one piece formula which characterized in that: rhombic holes are uniformly distributed in the metal net, one side of the metal net is a plane, and Z-axis bulges arranged on the nodes of the rhombic holes are uniformly distributed on the other side of the metal net; the Z-axis bulge and the metal net are integrally formed, and the Z-axis bulge is arranged on the metal net in a non-lap joint mode.

The device comprises an unreeling machine and a reeling machine, wherein a hole cutting stretching device, a deviation correcting device, a rolling device and an anti-corrosion device are sequentially arranged between the unreeling machine and the reeling machine; the hole cutting stretching device comprises a cutter table and a supporting table, wherein a cutter edge is arranged below the cutter table, and a cutter groove corresponding to the cutter edge is arranged on the supporting table; the net inlet side of the supporting table is provided with a slide roller, and the net outlet side of the supporting table is provided with a stretching roller.

The upper part of the tool table is arranged on the top cover through an electric telescopic rod, the tool table is connected with one end of a mechanical arm, and the other end of the mechanical arm is arranged on the stretching roller; the rolling device adopts an upper roller and a lower roller which rotate oppositely, the surface of the lower roller is a smooth surface, female dies are uniformly distributed on the upper roller and act on diamond hole nodes, and the central point of the female die and the diamond hole nodes are in the same Z-axis direction; an adjustable gap is arranged between the upper roller and the lower roller. The unreeling machine is internally provided with an unreeling shaft, an unreeling buffer roller and an unreeling transition roller; a winding transition roller, a winding buffer roller and a winding shaft are arranged in the winding machine; a plurality of deviation correcting rollers are arranged in the deviation correcting device, a spraying roller wheel is arranged in the spraying machine of the anti-corrosion treatment device, and a drying roller wheel is arranged in the drying machine.

The generation method of the metal net comprises the following steps: a. the metal foil coil is arranged on an unreeling shaft of the reeling machine, the metal foil sequentially passes through the unreeling buffer roller and the unreeling transition roller and then enters the hole cutting stretching device, and the metal foil enters the supporting table and is placed in the cutter groove after passing through the sliding roller.

b. The electric telescopic rod extends to drive the cutting edge of the tool table to cut the metal foil downwards, and the electric telescopic rod contracts to drive the tool table to move upwards; the metal foil after hole cutting enters a deviation correcting device after passing through a stretching roller; when the number of the rows of the cutting edges is less, the mechanical arm drives the cutter table to move back and forth along the advancing direction of the metal foil to cut the hole; the support table is also configured to slide along the rail to meet a larger machining area, limited to the size of the tool table that slides.

c. After passing through a first deviation correcting roller, a second deviation correcting roller, a third deviation correcting roller and a fourth deviation correcting roller in sequence, the metal foil after hole cutting enters a compression roller device;

d. rolling the cut metal foil by an upper roller and a lower roller, and enabling the diamond hole junction to act with a female die, so that a Z-axis bulge is obtained at the diamond hole junction through integral forming, and a metal mesh with the bulge is obtained; then the mixture enters an antiseptic treatment device, sequentially passes through a spraying roller in a spraying machine and a drying roller in a drying machine, and then enters a coiling machine; and the winding roller sequentially passes through the winding transition roller and the winding buffer roller and then is wound on the winding shaft.

The metal net is a copper net, an aluminum net, a stainless steel net or a nickel net.

The spraying roller is provided with a precise hairbrush, the drying roller is provided with absorbent cotton, the spraying roller and the drying roller are arranged at intervals, and the spraying machine and the drying machine are arranged on the upper surface and the lower surface of the metal net.

And the winding machine is provided with a tension deviation rectifying system for adjusting tension and a meter for recording the winding length.

The X and Y directions of the metal net are formed by arranging and combining rhombic meshes with uniform sizes, one surface of the Z-axis direction has a raised three-dimensional structure at the intersection point of the rhombuses, and the other surface of the Z-axis direction is flat.

The unreeling machine comprises an unreeling shaft for placing the metal foil, a buffer roller for conveying the metal foil and a transition roller, the buffer roller enables the size of the metal foil coil on the unreeling shaft not to be limited, the transition roller sends the metal foil into the cutting and stretching device, and the transition roller is parallel to the cutter platform.

The hole cutting stretching device comprises a tool table and a supporting table, a cutting edge is arranged on the tool table, the cutting edge is a diamond-shaped special cutting edge at the rear end of a front triangle, an electric telescopic rod is arranged on the tool table and can move up and down, the electric telescopic rod is fixed on a top cover, the top cover can slide left and right, a mechanical arm is arranged on the tool table, a stretching roller is arranged at the tail end of the mechanical arm, and a copper net after hole cutting is stretched. The supporting table is provided with a sliding roller, metal foils are flattened and conveyed, a cutter groove is formed in the position, corresponding to the cutter table, of the supporting table, the cutter groove is matched with the cutting edge, baffles are arranged on two sides of the supporting table, a sliding rail is arranged below the supporting table, and the supporting table can slide left and right along the sliding rail. The hole cutting and stretching device is provided with a servo numerical control system.

The deviation correcting device comprises a plurality of deviation correcting rollers which are matched with each other and rotate synchronously, the deviation correcting rollers are provided with a tension correcting system and a pressure sensing system, the deviation correcting rollers can ensure that the edges of the metal net are parallel and level, the meshes are uniform, and meanwhile, the stress and the tension inside the metal net can be adjusted, so that the unevenness and the edge warping of the surface of the metal net are prevented.

The rolling device comprises an upper roller and a lower roller, the upper roller and the lower roller are matched with each other to rotate, the distance between the upper roller and the lower roller can be adjusted, the thickness and the surface quality of the metal mesh are controlled through the rolling device, the upper roller is provided with a precise female die, the center point of the female die is superposed with the diamond mesh nodes of the copper mesh, protrusions are pressed on the diamond nodes, the upper surface of the metal mesh is enabled to form a protruding three-dimensional structure, the surface of the lower roller is smooth, and the lower surface of the metal mesh is enabled to be smooth and flat.

Anticorrosive treatment device includes the sprayer, the spraying gyro wheel, drying-machine and stoving gyro wheel, the spraying chance will prevent that the antiseptic solution is even sprays on the metal mesh surface, the spraying gyro wheel has accurate brush, can be with the more even dispersion on the metal mesh of hydrojet, the drying-machine effect is with metal mesh surface fast drying, the stoving gyro wheel has the cotton that absorbs water, can inhale dry fast with the remaining moisture in metal mesh surface, the sprayer, the drying-machine all has the setting on the upper and lower surface of metal mesh, spraying gyro wheel and stoving gyro wheel interval set up.

The rolling machine comprises a transition roller for conveying the metal mesh, a buffer roller and a rolling shaft for rolling the metal mesh, the metal mesh can be quickly rolled, the rolling size is not limited, a tension deviation rectifying system is arranged on the rolling machine, a meter is arranged on the rolling machine, and the rolling length is recorded.

The invention has the following beneficial effects:

(1) the metal net is an integrally formed metal net, particularly, the Z-axis protrusions and the metal net are also integrally formed, and the phenomenon that the resistance at the lap joint is larger and is broken down instantly is avoided.

(2) One smooth surface of the three-dimensional metal mesh is provided with a raised three-dimensional structure, the smooth surface can be well attached to a mold, and the raised surface can be tightly inserted into a composite material and firmly combined with the composite material. The metal net has good shape following performance on the surface of the shield.

(3) Three-dimensional spatial structure metal mesh structural design is reasonable, hits the metal mesh after the thunder and lightning, and lightning current not only can be along X, Y direction dispersion, can also be along Z axle direction fast dispersion, and the density of electric current in every direction diminishes, compares better with the lightning protection effect of two-dimensional plane net.

(4) Unreel, the cutting hole is drawn, the school is deflected, the roll-in, anticorrosive and rolling action realizes cooperating the drive simultaneously, and production facility synchronization match nature is good, need not many assembly lines and unreels rolling operation, convenient operation, production efficiency height. Set up anticorrosive treatment device, can carry out quick even anticorrosive treatment to the metal mesh, the corrosion resistance of reinforcing metal mesh guarantees that the metal mesh uses not corrode in the environment that salt fog humidity is big.

Drawings

Fig. 1 is a schematic three-dimensional structure of a metal mesh.

Fig. 2 is a schematic view of a metal mesh production plant.

Fig. 3 is a structural view of the hole-cutting stretching apparatus.

Fig. 4 is a structural view of the rolling device.

Fig. 5 is a schematic view of rolled Z-axis protrusions.

Fig. 6 is a schematic view of the anticorrosion treatment of the metal mesh.

Fig. 7 is a composite cross-sectional view of a metal mesh and composite material.

In the figure: 1. 101, Z-axis bulges, 102, diamond holes, 103, diamond hole joints, 02, a metal foil coil, 3, an unreeling machine, 301, an unreeling shaft, 302, an unreeling buffer roller, 303, an unreeling transition roller, 4, a hole cutting stretching device, 401 a cutter table, 402 blades, 403 electric telescopic rods, 404 a top cover, 405 mechanical arms, 406 stretching rollers, 407 a supporting table, 408, sliding rollers, 409 cutter grooves, 410 baffles, 411 sliding rails, 5, a deviation correcting device, 501, a first deviation correcting roller, 502, a second deviation correcting roller 503, a third deviation correcting roller, 504, a fourth deviation correcting roller, 6, a rolling device, 601, an upper roller, 602, a lower roller, 603, a female die, 7, an anticorrosion treatment device, 701, a sprayer, 702, a spraying roller, 703, a dryer, 704, a drying roller, 8, a reeling machine, 801, a reeling transition roller, 802, a reeling buffer roller, 803, a reeling shaft, 9 and a composite material layer.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific examples, but the present invention is not limited thereto.

Example 1

The invention provides a three-dimensional metal net 1, which is shown in a schematic structural diagram of fig. 1, wherein the X direction and the Y direction of the metal net are formed by arranging and combining rhombic meshes with uniform sizes, one surface in the Z-axis direction is provided with a Z-axis bulge 101 at the intersection point of the rhombus, and the other surface is flat. The metal mesh may be made of any one of copper, aluminum, stainless steel and nickel.

The length of the metal net can be customized according to requirements, the width ranges from 100mm to 2000mm, and the thickness ranges from 0.05mm to 1 mm.

The invention also provides production equipment for the integral forming of the metal mesh, and a schematic diagram of the production and processing flow of the metal mesh is shown in fig. 2, and the production and processing flow of the metal mesh sequentially comprises an unreeling machine 03, a hole cutting stretching device 04 (fig. 3), a deviation correcting device 05, a rolling device 06 (fig. 4), an anti-corrosion treatment device 07 and a reeling machine 08.

When the metal mesh 1 is produced, a metal foil 02 roll is placed on an unreeling shaft 301 of an unreeling machine 03, the metal foil roll 2 is slowly unreeled, the metal foil roll 2 is sent to a hole cutting and stretching device 04 through an unreeling buffer roller 302 and an unreeling transition roller 303, and the unreeling transition roller 303 is parallel to a supporting table 407.

The hole cutting stretching device 04 comprises a cutter table 401 and a support table 407, wherein the cutter table 401 is provided with a cutting edge 402, the cutting edge 402 is a diamond-shaped special cutting edge with a triangular front end and a diamond rear end, the size of diamond-shaped meshes of the metal net 401 can be changed by adjusting the cutting edge 401, the cutter table 401 is provided with an electric telescopic rod 403, the cutter table 401 can move up and down, the electric telescopic rod 403 is fixed on a top cover 404, the top cover 404 can slide left and right, a mechanical arm 405 is arranged on the cutter table 401, the tail end of the mechanical arm 405 is provided with a stretching roller 406, and the copper net after hole cutting is stretched. A sliding roller 408 is arranged on the supporting platform 407, the copper foil is flattened and conveyed, a cutter groove 409 is arranged on the supporting platform 407 corresponding to the cutter platform 401, the cutter groove 409 is matched with the cutter blade 401, baffles 410 are arranged on two sides of the supporting platform 407, a sliding rail 411 is arranged below the supporting platform 407, and the supporting platform can slide left and right along the sliding.

The deviation correcting device 05 comprises a plurality of deviation correcting rollers (a first deviation correcting roller 501, a second deviation correcting roller 502, a third deviation correcting roller 503 and a fourth deviation correcting roller 504), the deviation correcting rollers are matched with each other and rotate synchronously, after the deviation correcting device, the edges of the metal net can be parallel and level, the meshes are uniform, meanwhile, the stress and the tension inside the metal net 1 can be adjusted, and the unevenness and the edge warping of the surface of the metal net 1 are prevented.

The rolling device 06 comprises an upper roller 601 and a lower roller 602, the upper roller and the lower roller are matched with each other to rotate, the distance between the upper roller and the lower roller can be adjusted, and the thickness and the surface quality of the metal mesh are controlled through the rolling device. As shown in figure 5, the upper roller is provided with a precise female die 603, the center point of the female die is superposed with the diamond mesh node of the copper mesh, a protrusion is pressed on the diamond node, so that the upper surface of the metal mesh forms a protruding three-dimensional structure, and the lower roller has a smooth surface, so that the lower surface of the metal mesh is smooth and flat.

The anticorrosion treatment device 7 comprises a spraying machine 701, a spraying roller 702, a drying machine 703 and a drying roller 704, wherein the spraying machine 701 can uniformly spray anticorrosion liquid on the surface of the metal mesh 01, the spraying roller 702 is provided with a precise hairbrush, the anticorrosion liquid can be more uniformly dispersed on the metal mesh 01, the drying machine 703 is used for rapidly drying the surface of the metal mesh, the drying roller 704 is provided with absorbent cotton, residual moisture on the surface of the metal mesh can be rapidly absorbed, the spraying machine 701 and the drying machine 703 are arranged on the upper surface and the lower surface of the metal mesh, and the spraying roller 702 and the drying roller 704 are arranged at intervals.

Finally, the metal net 1 in a coil can be obtained on a coiling machine 8. The winding machine 8 comprises a winding transition roller 801 and a winding buffer roller 802 for conveying the metal mesh and a winding shaft 803 for winding the metal mesh, the metal mesh 1 can be rapidly wound, the winding size is not limited, a tension deviation rectifying system is arranged on the winding machine 8, a meter is arranged on the winding machine, and the winding length is recorded.

Example 2

In embodiment 2, the metal mesh production and processing flow sequentially comprises an unreeling machine 3, a hole cutting and stretching device 4, a deviation correcting device 5, a rolling device 6 and a reeling machine 8; the metal net anti-corrosion treatment device 7 is arranged on the other production line.

After the metal foil passes through the unreeling machine 3, the hole cutting stretching device 4, the deviation correcting device 5, the rolling device 6 and the reeling machine 8, the device operation steps and the method steps are the same as those of the embodiment 1, and the coiled metal mesh 1 without antiseptic treatment is obtained.

The metal mesh 1 is separately subjected to a corrosion prevention treatment in another flow line as shown in fig. 6. Comprises an unreeling machine 3, an antiseptic treatment device 7 and a reeling machine 8 in sequence. The steps of the unreeling, reeling and antiseptic treatment method are the same as those of the embodiment 1.

Example 3

In example 3, the resulting finished expanded metal 1 was combined with a composite material 9, the schematic cross-sectional view of which is shown in fig. 7.

The common method for compounding the metal net 1 and the composite material 9 comprises the steps of laying the metal net on a corresponding mold, laying fiber cloth on the metal net, building a vacuum environment by using a vacuum bag after laying is finished, filling resin, and compounding the metal net and the composite material after the resin is cured and demoulded. The metal net can be firmly adhered to the surface of the composite material to protect the composite material.

The device of the present invention may have other forms than the above-described embodiments, and it should be understood that any simple modification, equivalent change and modification made to the above-described embodiments according to the technical spirit of the present invention fall within the scope of the present invention.

Claims (6)

1. Three-dimensional metal mesh of integrated into one piece formula which characterized in that: rhombic holes (102) are uniformly distributed on the metal net (1), one side of the metal net (1) is a plane, and Z-axis protrusions (101) arranged on rhombic hole nodes (103) are uniformly distributed on the other side of the metal net (1); the Z-axis protrusion (101) and the metal net (1) are integrally formed, and the Z-axis protrusion (101) is arranged on the metal net (1) in a non-lap joint mode.

2. The integrally formed three-dimensional metal mesh of claim 1, wherein: the metal net is a copper net, an aluminum net, a stainless steel net or a nickel net, the width of the metal net is 100mm-2000mm, and the thickness of the metal net is 0.05mm-1 mm.

3. The utility model provides a production facility for preparing three-dimensional metal mesh of integrated into one piece formula, it includes unreeling machine (3) and rolling machine (8), its characterized in that: the metal mesh is the metal mesh of claim 1 or claim 2;

a hole cutting stretching device (4), a deviation correcting device (5), a rolling device (6) and an anti-corrosion treatment device (7) are further sequentially arranged between the unreeling machine (3) and the reeling machine (8);

the hole cutting stretching device (4) comprises a cutter table (401) and a support table (407), wherein a cutter edge (402) is arranged below the cutter table (401), and a cutter groove (409) corresponding to the cutter edge (402) is arranged on the support table (407); a sliding roller (408) is arranged on the net inlet side of the supporting table (407), and a stretching roller (406) is arranged on the net outlet side;

the upper part of the cutter table (401) is arranged on the top cover (404) through an electric telescopic rod (403), the cutter table (401) is connected with one end of a mechanical arm (405), and the other end of the mechanical arm (405) is arranged on a stretching roller (406);

the rolling device (6) adopts an upper roller (601) and a lower roller (602) to rotate oppositely, the surface of the lower roller (602) is a smooth surface, concave dies (603) are uniformly distributed on the upper roller (601), the concave dies (603) act on diamond hole nodes (103), and the central points of the concave dies (603) and the diamond hole nodes (103) are in the same Z-axis direction; an adjustable gap is arranged between the upper roller (601) and the lower roller (602);

an unreeling shaft (301), an unreeling buffer roller (302) and an unreeling transition roller (303) are arranged in the unreeling machine (3); a winding transition roller (801), a winding buffer roller (802) and a winding shaft (803) are arranged in the winding machine (8);

a plurality of deviation correcting rollers are arranged in the deviation correcting device (5), a spraying roller (702) is arranged in a spraying machine (701) of the anticorrosion treatment device (7), and a drying roller (704) is arranged in a drying machine (703).

4. The production apparatus according to claim 3, wherein: the section of the front end of the blade (402) is triangular, and the section of the rear end of the blade is rhombic.

5. The production apparatus according to claim 3, wherein: the spraying roller (702) is provided with a precise hairbrush, the drying roller (704) is provided with absorbent cotton, the spraying roller (702) and the drying roller (704) are arranged at intervals, and the spraying machine (701) and the drying machine (703) are arranged on the upper surface and the lower surface of the metal mesh.

6. The production apparatus according to claim 3, wherein: and a tension deviation rectifying system for adjusting tension and a meter for recording the winding length are arranged on the winding machine (8).

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