High-strength thick-film 3D net and preparation method and manufacturing equipment thereof

Abstract

The invention discloses a high-strength thick-film 3D net and a preparation method thereof, and relates to the technical field of tungsten wire net preparation, warps are of a linear structure, and wefts are of a wavy structure. The preparation method comprises the following steps: taking tungsten filaments threaded with flat metal healds and reeds as warp threads, feeding the warp threads onto a tatting mechanism, and adjusting the tatting mechanism to keep the same density and length of adjacent weft threads; then the fabric is woven into a net by a weaving mechanism; during tatting, the warps are always kept in a straight form and the wefts are kept in an up-and-down bending form by adjusting different elongation rates; when the printing steel mesh is used, in the SMT surface assembly technology, in order to guarantee the stability of the printing steel mesh, a three-dimensional interweaving structure with straight warps and bent wefts is formed, so that the thickness of the printing steel mesh is increased, and the problem that in the prior art, the printing steel mesh is thin, and elements are prone to high-temperature damage is solved.

Description

Technical Field

[0001] This invention relates to the field of 3D mesh technology, specifically to a high-strength thick-film 3D mesh and its preparation method. Background Technology

[0002] Tungsten wire stencils are a type of stencil specifically designed for SMT solder paste printing, catering to high-precision and high-wear-resistance requirements. These customized stencils use high-hardness, high-melting-point tungsten wire as the raw material, employing a precision weaving process to create a tungsten wire mesh with a specific mesh count and aperture size. After processes such as shaping, cutting, aluminum bonding, and laser hole finishing, the stencil is manufactured to fit the SMT production line, enabling precise printing of solder paste onto PCB pads.

[0003] In existing technologies, SMT (Surface Mount Technology) is a technology that assembles circuits by mounting leadless or short-lead surface mount components onto the surface of a PCB circuit board or other substrates, and then soldering them together using dip soldering or hot air reflow soldering. In SMT surface mount technology, the PCB printing process is the key process for surface mount quality. The role of the printing stencil is to print on the flat surface of the PCB board that has not been mounted with components. However, existing printing stencils are relatively thin and are prone to causing high-temperature damage to components.

[0004] Therefore, we propose a high-strength thick-film 3D mesh and its preparation method to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength thick-film 3D mesh and its preparation method, so as to solve the problem mentioned in the background art that thin printed stencils are prone to high-temperature damage to components.

[0006] This invention discloses a high-strength thick-film 3D tungsten wire mesh, which has warp and weft threads. The warp threads have a straight structure, and the weft threads have a wavy structure. Due to the special structure of the weft threads, the tungsten wire mesh of this invention has a certain thickness in the vertical direction, forming a 3D three-dimensional effect, increasing the thickness, and solving the problem of high-temperature damage.

[0007] This invention also discloses a method for preparing a high-strength thick-film 3D mesh, comprising the following steps: Step 1: On the tungsten wire braiding machine, the required mesh number of tungsten wire is first taken out from the winding shaft by the tungsten wire warping mechanism to relieve stress; Step 2: Select the steel heddles and reeds with the corresponding wire mesh count and wire diameter, and pass the tungsten wire processed in Step 1 through the steel heddles and reeds in sequence according to the arranged warp threads; Step 3: Take the tungsten wires that were threaded onto the steel heddles and reeds in Step 2 as warp threads, and put them onto the weaving mechanism. Adjust the weaving mechanism to make the adjacent weft threads maintain the same density and length. Step 4: The upper shuttle weaves the web; during weaving, by adjusting different elongation rates, the warp threads always remain straight while the weft threads remain curved up and down; Step 5: Inspection of raw and finished products. Step Six: Clean again using an ultrasonic cleaner; Step 7: Rolling and finished product inspection.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a tungsten wire weaving device for high-strength thick-film 3D mesh, the tungsten wire weaving device comprising a mounting plate, a weaving mechanism, a warping mechanism, and a stress relief assembly disposed on the mounting plate, the warping mechanism comprising a limiting frame, a plurality of take-up rollers being movably fitted inside the limiting frame, a plurality of warp threads being wound around the outer surface of the plurality of take-up rollers, a transmission gear for driving the release of the warp threads being fixed at the top of the plurality of take-up rollers, a plurality of tension sensors for detecting the tension of the warp threads being disposed on the outer surface of the limiting frame, and a stress relief assembly comprising a plurality of guide rollers for gently stretching the warp threads.

[0009] A stress-relieving component is installed between the weaving mechanism and the warping mechanism, allowing adjustment of the warp tension or elongation. For even better results, another stress-relieving component is installed between the weft winding component and the weaving mechanism to adjust the weft tension or elongation. The two stress-relieving components adjust the tension of the warp and weft threads differently. Even better, after adjustment, the weft tension is less than the warp tension, resulting in a curved, three-dimensional effect for the weft.

[0010] Preferably, the warping mechanism further includes a mounting frame, on the top of which a forward and reverse motor is fixedly mounted by screws, and a connecting shaft is fixedly mounted on the output end of the forward and reverse motor. A first internal drive belt meshes between the outer surfaces of the plurality of transmission gears, and three support frames are fixed on the outer surface of the limiting frame.

[0011] Preferably, the stress relief assembly further includes a pressure-resistant frame, and the plurality of guide rollers are divided into two groups. One group of guide rollers has a driven gear fixedly installed at one end, and the other group of guide rollers has a driving gear fixedly installed at one end. The outer surface of the pressure-resistant frame is fixedly installed with a plurality of support frames, and the outer surface of the plurality of support frames is fixedly installed with a servo motor by screws.

[0012] Preferably, the top of the mounting plate is further provided with a weft winding assembly, which includes a fixing frame. Multiple weft threads are wound inside the fixing frame via take-up rollers, and a drive gear is fixed to the top of each of the multiple take-up rollers.

[0013] Preferably, a second transmission inner drive belt meshes between the outer surfaces of the plurality of drive gears, a support bracket is fixed to the top of the fixed frame, a drive motor is fixed to the top of the support bracket by screws, and a drive shaft is fixed to the output end of the drive motor.

[0014] Preferably, the weaving mechanism includes a shuttle loom, on one side of the outer surface of the shuttle loom a warp reed is coupled to it, and the outer surface of the warp reed is coupled with a warp heald via an auxiliary plate. On the other side of the outer surface of the shuttle loom a weft reed is coupled to it, and the outer surface of the weft reed is coupled with a weft heald.

[0015] Preferably, the bottom of the limiting frame is fixedly connected to the top of the mounting plate, the top ends of the plurality of winding rollers extend movably through the outside of the limiting frame, the bottom of the mounting frame is fixedly connected to the top of the limiting frame, the bottom end of the connecting shaft extends movably through the outside of the mounting frame, and the bottom end of the connecting shaft is fixedly connected to the top of one of the transmission gears.

[0016] Preferably, the bottom of the pressure-resistant frame is fixedly connected to the top of the mounting plate, both ends of the plurality of guide rollers extend movably to the outside of the pressure-resistant frame, the outer surfaces of the plurality of driven gears are respectively meshed with the outer surfaces of the plurality of driving gears, and one end of the output shaft of the plurality of servo motors is respectively fixedly connected to the outer surfaces of the plurality of driving gears.

[0017] Preferably, the bottom of the fixing frame is fixedly connected to the top of the mounting plate, both ends of the plurality of take-up rollers extend movably through the outside of the fixing frame, the bottom end of the drive shaft extends movably through the outside of the support bracket, and the bottom end of the drive shaft is fixedly connected to the top end of one of the drive gears.

[0018] Furthermore, a method for preparing a high-strength thick-film 3D mesh includes the following steps: S1. In order to ensure the stability of the printed stencil, first move one end of multiple weft threads to the inside of their corresponding weft thread heddles, then insert one end of multiple warp threads into the corresponding holes in the warp thread heddles, and then insert them into the warp reed. S2. Start the drive motor to drive multiple weft threads to be released outward from their corresponding take-up rollers. Since the guide groove of the weft thread steel sheet hex is undulating, the weft thread will be forced to shuttle along the wave trajectory when passing through the guide groove, forming a curved shape with peaks and troughs. S3. At the same time as starting the drive motor, start the forward and reverse motors to release the warp threads set on the surfaces of multiple take-up rollers outward and pass through the tension sensors corresponding to them respectively to detect the tension of the warp threads until the tension sensor detects that the tension value reaches the required value. S4. Before the warp yarn enters the loom, it passes between the outer surfaces of two adjacent guide rollers. Multiple servo motors are activated, which drive the corresponding drive gears to rotate, thereby driving the guide rollers connected to them to rotate. During the rotation of the drive gears, the driven gears are driven to rotate in the opposite direction, thereby driving the guide rollers connected to them to rotate in the opposite direction. This gently smooths and kneads the warp yarns, automatically releasing the local bending and twisting stress of the warp yarns.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. In SMT surface mount technology, to ensure the stability of the printed stencil, one end of multiple weft threads is first moved to the corresponding weft thread heddle, then inserted into the loom, and the drive motor is started to release multiple weft threads outward from their corresponding take-up rollers, while ensuring that the warp threads remain straight. When the warp threads interweave with the wavy weft threads in the loom, the warp threads will be stuck between the crests and troughs of the weft threads, forming a three-dimensional interwoven structure with straight warp threads and curved weft threads. Due to the special structure of the weft threads, the tungsten wire mesh of this invention has a certain thickness in the vertical direction, forming a 3D three-dimensional effect, thereby increasing the thickness of the printed stencil and solving the problem that thin printed stencils in the prior art are prone to high-temperature damage to components. 2. In order to release the winding and tensile stress generated by the warp yarn during the warping process and avoid residual stress affecting the three-dimensional structure and weaving stability of the D-net, the warp yarn is passed between the outer surfaces of two adjacent guide rollers before entering the loom. Multiple servo motors are started to drive the drive gear to rotate, so that each pair of adjacent guide rollers makes a low-speed reverse micro-rotation. The warp yarn passes between the two adjacent guide rollers and is gently kneaded by the low-speed reverse micro-rotation of the two guide rollers. 3. During use, the warp threads, which are set on the surfaces of multiple take-up rollers, are released outward and pass through their corresponding tension sensors. The tension of the warp threads is detected. When the tension value is low, the speed of the forward and reverse motors is reduced through the external control system, thereby slowing down the release rate of the warp threads. When the tension value is high, the speed of the forward and reverse motors is increased, thereby accelerating the release rate of the warp threads, until the tension sensor detects that the tension value has reached the required value. Through the function of the tension sensor, precise tension is guaranteed for the core process of straight warp threads and curved weft threads in D-net. Through real-time monitoring and feedback, the weaving process is stabilized from the source, ensuring the quality of the finished product. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the present invention; Figure 2 This is a perspective view of the weaving mechanism portion of the present invention; Figure 3 This is a perspective view of the weft reed portion of the present invention; Figure 4 This is a perspective view of the warp reed portion of the present invention; Figure 5 This is a perspective view of the weft winding assembly of the present invention; Figure 6 This is a perspective view of the warping mechanism of the present invention; Figure 7 This is a perspective view of the mounting bracket portion of the present invention; Figure 8 This is a perspective view of a portion of the stress relief component of the present invention; Figure 9 This is a schematic diagram of the tungsten wire mesh with 3D effect obtained by the present invention; Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure.

[0021] In the picture: 1. Mounting plate; 2. Weaving mechanism; 201. Shuttle loom; 202. Warp reed; 203. Warp heald; 204. Weft reed; 205. Weft heald; 3. Weft take-up assembly; 301. Fixing frame; 302. Weft yarn; 303. Drive gear; 304. Second transmission inner drive belt; 305. Support bracket; 306. Drive motor; 307. Drive shaft; 4. Warping mechanism; 401. 402. Limiting frame; 403. Take-up roller; 404. Warp yarn; 405. Transmission gear; 406. First transmission inner drive belt; 407. Mounting frame; 408. Forward and reverse motors; 409. Connecting shaft; 410. Bearing frame; 410. Tension sensor; 511. Stress relief assembly; 501. Compression frame; 502. Guide roller; 503. Driven gear; 504. Drive gear; 505. Support frame; 506. Servo motor. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0023] Reference Figures 1-8As shown: A manufacturing device for high-strength thick film 3D mesh includes a mounting plate 1, a weaving mechanism 2 is provided on the top of the mounting plate 1 near one edge, a warping mechanism 4 is provided on the front side of the weaving mechanism 2, a weft winding assembly 3 is provided on the left side of the weaving mechanism 2, and a stress relief assembly 5 is provided between the weaving mechanism 2 and the warping mechanism 4.

[0024] The warping mechanism 4 includes a limiting frame 401, in which multiple take-up rollers 402 are movably fitted. Multiple warp threads 403 are wound around the outer surfaces of the multiple take-up rollers 402. A transmission gear 404 for driving the release of the warp threads 403 is fixed on the top of each of the multiple take-up rollers 402. Multiple tension sensors 410 for detecting the tension of the warp threads 403 are provided on the outer surface of the limiting frame 401.

[0025] The warping mechanism 4 also includes a mounting frame 406. A forward / reverse motor 407 is fixedly mounted on the top of the mounting frame 406 by screws. A connecting shaft 408 is fixedly mounted on the output end of the forward / reverse motor 407. Multiple transmission gears 404 are meshed with the same first transmission inner drive belt 405. Three support frames 409 are fixed on the outer surface of the limiting frame 401. The bottom of the limiting frame 401 is fixedly connected to the top of the mounting plate 1. The top ends of multiple take-up rollers 402 extend movably through the outside of the limiting frame 401. The bottom of the mounting frame 406 is fixedly connected to the top of the limiting frame 401. The bottom end of the connecting shaft 408 extends movably through the outside of the mounting frame 406. The bottom end of the connecting shaft 408 is fixedly connected to the top of one of the transmission gears 404. The forward / reverse motor 407 drives one transmission gear 404 to rotate via the connecting shaft 408, and then drives the other transmission gears 404 to rotate via the first transmission inner drive belt 405. One end of each take-up roller 402 is connected to a transmission gear 404, and the rotation of the transmission gear 404 drives the take-up roller 402 to rotate.

[0026] The top of the mounting plate 1 is also provided with a weft winding assembly 3. The weft winding assembly 3 includes a fixing frame 301. Several weft yarns 302 are sleeved inside the fixing frame 301 through take-up rollers. The top ends of the multiple take-up rollers are all fixed with drive gears 303. The outer surfaces of the multiple drive gears 303 are meshed with a second transmission inner drive belt 304. The top of the fixing frame 301 is fixed with a support bracket 305. The top of the support bracket 305 is fixed with a drive motor 306 by screws. The output end of the drive motor 306 is fixed with a drive shaft 307. The bottom of the fixing frame 301 is fixedly connected to the top of the mounting plate 1. Both ends of the multiple take-up rollers are movable through to the outside of the fixing frame 301. The bottom end of the drive shaft 307 is movable through to the outside of the support bracket 305. The bottom end of the drive shaft 307 is fixedly connected to the top end of one of the drive gears 303.

[0027] The stress relief assembly 5 includes multiple guide rollers 502 for gently stretching the warp 403. The stress relief assembly 5 also includes a pressure-resistant frame 501. The multiple guide rollers 502 are divided into two groups. One group of guide rollers 502 has a driven gear 503 fixedly installed at one end, and the other group of guide rollers 502 has a driving gear 504 fixedly installed at one end. Multiple support frames 505 are fixedly installed on the outer surface of the pressure-resistant frame 501. Servo motors 506 are fixedly installed on the outer surface of the multiple support frames 505 by screws. The bottom of the pressure-resistant frame 501 is fixedly connected to the top of the mounting plate 1. Both ends of the multiple guide rollers 502 extend movably to the outside of the pressure-resistant frame 501. The outer surfaces of the multiple driven gears 503 are respectively meshed with the outer surfaces of the multiple driving gears 504. One end of the output shaft of the multiple servo motors 506 is respectively fixedly connected to the outer surface of the multiple driving gears 504.

[0028] In this embodiment, in SMT surface mount technology, to ensure the stability of the printed stencil, it is first fitted onto... Figure 5 As shown, one end of one or more weft lines in weft line 302 moves into the interior of the corresponding weft line steel sheet heald 205, wherein, for example... Figure 3As shown, to allow multiple weft threads 302 to continue moving forward along the weft reed 204 and insert into the loom 201, one end of each warp thread 403 is inserted into the corresponding insertion hole in the warp heddle 203, then inserted into the warp reed 202, and finally installed inside the loom 201. The loom 201 operates through a cyclical process of warp thread 403 opening, weft thread 302 passing through, beating, weft interlacing, and continuous winding. The relative movement of the warp and weft threads is precisely controlled by a mechanical structure to ultimately form a fabric. Then, the drive motor 306 can be started by an external control system, causing it to drive the drive shaft 307 to rotate, which in turn drives the corresponding drive gear 303 to rotate, thereby driving the second transmission inner drive belt 30. 4. Rotation drives the remaining drive gears 303 to rotate, thereby releasing the warp threads 302 from their corresponding take-up rollers. Because the guide grooves of the weft thread heald 205 are wavy, the weft threads 302 are forced to follow a wave-like trajectory as they pass through the guide grooves, forming a curved shape with peaks and troughs. Simultaneously with starting the drive motor 306, the forward and reverse motors 407 are activated via an external control system, causing them to drive the corresponding transmission gears 404 to rotate. This, in turn, drives the first transmission inner drive belt 405 to rotate, causing the remaining transmission gears 404 to rotate. This releases the warp threads 403 from the surfaces of the multiple take-up rollers 402, allowing them to pass through their corresponding tension sensors 410. The tension sensor detects the tension of the warp thread 403. When the tension value is low, the external control system reduces the speed of the forward and reverse motors 407, thereby slowing down the release rate of the warp thread 403. When the tension value is high, the speed of the forward and reverse motors 407 is increased, thereby accelerating the release rate of the warp thread 403, until the tension sensor 410 detects that the tension value has reached the required value. The tension sensor 410 converts the tension exerted by the warp thread 403 on the tension sensor 410 into a measurable and readable electrical signal through a specific physical effect. After signal processing, the precise tension is obtained. When the warp thread passes through the tension sensor 410 and presses against the force-bearing element, the tension causes the elastic element to undergo slight deformation, and the strain gauge attached to it reacts accordingly. When stretched, the resistance of the warp yarn 403 changes accordingly. The sensor converts this resistance change into a voltage signal through a circuit, which, after calibration, corresponds to the tension value, thus ensuring that the warp yarn 403 remains straight. When it interweaves with the wavy weft yarn 302 in the loom 201, the warp yarn 403 gets caught between the crests and troughs of the weft yarn 302, forming a three-dimensional interwoven structure where the warp yarn 403 is straight and the weft yarn 302 is curved. The thickness of this three-dimensional mesh is no longer the single-layer thickness of the planar steel mesh (the diameter of the warp yarn 403 plus the diameter of the weft yarn 302), but rather the amplitude height of the weft yarn 302 wave. This is equivalent to increasing the three-dimensional thickness of the mesh through structural design, thereby increasing the thickness of the printed steel mesh and preventing the high-temperature damage to components caused by a thin printed steel mesh.This solves the problem in existing technologies where thin printed stencils easily cause high-temperature damage to components.

[0029] To achieve the effect of increasing the thickness of weft 302, refer to... Figure 3 As shown, the outer surface of the weft steel sheet helium 205 is wavy. When the weft yarn 302 is attached to the outer surface of the wavy weft steel sheet helium 205, under the same tensile force, the stress of the weft yarn 302 is changed due to the increased deformation of the wavy structure, resulting in a different deformation than that of the warp yarn 403. Therefore, after weaving, a 3D three-dimensional weaving structure is obtained with the warp yarn 403 straight and the weft yarn 302 curved.

[0030] To achieve a more effective three-dimensional effect, a heating structure can be provided on the weft steel sheet 205. After the weft 302 is heated and softened, it has a better deformation effect.

[0031] In another embodiment, to further improve the three-dimensional weaving effect, a stress relief component 5 is also provided between the weft winding assembly 3 and the weaving mechanism 2. The weft yarn 302 on the weft winding assembly 3 passes through the stress relief component 5 before entering the weft heald 205. Furthermore, the tension on the stress relief component 5 corresponding to the weft winding assembly 3 is different from, specifically smaller than, the tension on the stress relief component 5 corresponding to the warping mechanism 4. This results in a technical effect where the warp yarn 403 is pulled tighter and the weft yarn 302 is pulled looser. Figure 9 and Figure 10 As shown, meridian 403 is straight, while parallel 302 is curved and three-dimensional.

[0032] like Figure 1 and Figures 6-8 As shown, a high-strength thick-film 3D mesh includes a mounting plate 1, a weaving mechanism 2 near one edge of the top of the mounting plate 1, a warping mechanism 4, a limiting frame 401, a plurality of take-up rollers 402 movably fitted inside the limiting frame 401, a plurality of warp threads 403 wound around the outer surface of the plurality of take-up rollers 402, a transmission gear 404 for driving the release of the warp threads 403 fixed on the top of the plurality of take-up rollers 402, a plurality of tension sensors 410 for detecting the tension of the warp threads 403 provided on the outer surface of the limiting frame 401, and a stress relief assembly 5. In this embodiment, in order to release the winding and tensile stress generated by the warp yarn 403 during the warping process, avoid residual stress affecting the three-dimensional structure and weaving stability of the 3D mesh, and ultimately ensure the core technological goal of keeping the warp yarn 403 straight and the weft yarn 302 curved, the warp yarn 403 is passed through a... Figure 8Between the outer surfaces of two adjacent guide rollers 502, which are made of soft silicone, the spacing between the guide rollers 502 is slightly larger than the diameter of the warp 403. Then, multiple servo motors 506 can be started by an external control system, which drive the corresponding drive gears 504 to rotate, thereby driving the guide rollers 502 connected to them to rotate. During the rotation of the drive gears 504, the driven gears 503 are driven to rotate in the opposite direction, thereby driving the guide rollers 502 connected to them to rotate in the opposite direction. This achieves that each pair of adjacent guide rollers 502 makes a low-speed reverse micro-rotation. The warp 403 passes between two adjacent guide rollers 502. Through the low-speed reverse micro-rotation of the two guide rollers 502, the warp 403 is gently kneaded, thereby automatically releasing the local bending and kinking stress of the warp 403. There is no manual intervention and no new stress is generated, thus preventing the warp 403 from bending and loosening due to springback after being put on the machine.

[0033] In this invention, to ensure the stability of the printed stencil, it is first fitted onto... Figure 5 As shown, one end of one or more weft lines in weft line 302 moves into the interior of the corresponding weft line steel sheet heald 205, wherein, for example... Figure 3As shown, the outer surface of the weft heald 205 is wavy. This is to allow multiple weft threads 302 to continue moving forward along the weft reed 204 and insert into the loom 201. Then, one end of each warp thread 403 is inserted into the corresponding hole in the warp heald 203, and then into the warp reed 202. Finally, it is installed inside the loom 201. Then, the drive motor 306 can be started via the external control system, causing it to drive the drive shaft 307 to rotate, which in turn drives the corresponding drive gear 303 to rotate. The second drive belt 304 rotates, which in turn drives the remaining drive gears 303 to rotate, thereby releasing multiple weft yarns 302 from their corresponding take-up rollers. Because the guide grooves of the weft yarn heald 205 are wavy, the weft yarns 302 are forced to follow a wave-like trajectory as they pass through the guide grooves, forming a curved shape with peaks and troughs. Simultaneously with the start of the drive motor 306, the forward and reverse motors 407 are activated via an external control system, causing them to drive the corresponding drive gears 404 to rotate, thus driving multiple... The first drive belt 405 rotates, causing the other gears 404 to rotate. This releases the warp threads 403 from the surfaces of the multiple take-up rollers 402, which then pass through their corresponding tension sensors 410. The tension of the warp threads 403 is detected. When the tension is low, the external control system reduces the speed of the forward and reverse motors 407, thus slowing down the release rate of the warp threads 403. When the tension is high, the speed of the forward and reverse motors 407 is increased, thus accelerating the release rate of the warp threads 403, until the tension sensors 410 detect the tension. The required value is achieved. The thickness of this three-dimensional mesh structure is no longer the single-layer thickness of the diameter of the warp 403 plus the diameter of the weft 302 in a planar steel mesh, but rather the amplitude height of the weft 302 wave. This is equivalent to increasing the three-dimensional thickness of the mesh out of thin air through structural design. In order to release the winding stress and tensile stress generated by the warp 403 during the warping process, and to avoid residual stress affecting the three-dimensional structure and weaving stability of the 3D mesh, the core technological goal of ensuring that the warp 403 is straight and the weft 302 is curved is achieved. Before the warp 403 enters the shuttle loom 201, it is made to pass through... Figure 8Between the outer surfaces of two adjacent guide rollers 502, which are made of soft silicone, the spacing between the guide rollers 502 is slightly larger than the diameter of the warp 403. Then, multiple servo motors 506 can be started by an external control system to drive the corresponding drive gears 504 to rotate, thereby driving the guide rollers 502 connected to them to rotate. During the rotation of the drive gears 504, the driven gears 503 are driven to rotate in the opposite direction, thereby driving the guide rollers 502 connected to them to rotate in the opposite direction. This achieves that each pair of adjacent guide rollers 502 makes a low-speed reverse micro-rotation. The warp 403 passes between two adjacent guide rollers 502. Through the low-speed reverse micro-rotation of the two guide rollers 502, the warp 403 is gently kneaded, automatically releasing the local bending and kinking stress of the warp 403.

[0034] The wiring diagrams of the shuttle loom 201, drive motor 306, forward and reverse motor 407, tension sensor 410, and servo motor 506 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control methods and wiring arrangements of the shuttle loom 201, drive motor 306, forward and reverse motor 407, tension sensor 410, and servo motor 506 will not be explained in detail.

[0035] The high-strength thick-film 3D tungsten wire mesh prepared in this embodiment of the invention has high strength to ensure durability in complex environments. The fracture strength can reach 220N, and it can remain undamaged and undeformed for 2 hours in a high-temperature environment of 50°C, with normal performance.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-strength thick-film 3D mesh, having warp and weft threads, characterized in that, The meridians are straight lines, and the parallels are wavy.

2. A method for preparing a high-strength thick-film 3D mesh, characterized in that, Including the following steps: Step 1: On the tungsten wire braiding machine, the required mesh number of tungsten wire is first taken out from the winding shaft by the tungsten wire warping mechanism to relieve stress; Step 2: Select the steel heddles and reeds with the corresponding wire mesh count and wire diameter, and pass the tungsten wire processed in Step 1 through the steel heddles and reeds in sequence according to the arranged warp threads; Step 3: Take the tungsten wires that were threaded onto the steel heddles and reeds in Step 2 as warp threads, and put them onto the weaving mechanism. Adjust the weaving mechanism to make the adjacent weft threads maintain the same density and length. Step 4: The upper shuttle weaves the web; during weaving, by adjusting different elongation rates, the warp threads always remain straight while the weft threads remain curved up and down; Step 5: Inspection of raw and finished products. Step Six: Clean again using an ultrasonic cleaner; Step 7: Rolling and finished product inspection.

3. The method for preparing a high-strength thick-film 3D mesh according to claim 2, characterized in that, The tungsten wire weaving equipment includes a mounting plate (1), on which a weaving mechanism (2), a warping mechanism (4), and a stress relief assembly (5) are provided. The warping mechanism (4) includes a limit frame (401), and multiple take-up rollers (402) are movably fitted inside the limit frame (401). The outer surfaces of the multiple take-up rollers (402) are all wound with warp threads (403). The top of the multiple take-up rollers (402) is fixed with a transmission gear (404) for driving the release of the warp threads (403). The outer surface of the limit frame (401) is provided with multiple tension sensors (410) for detecting the tension of the warp threads (403). The stress relief assembly (5) includes multiple guide rollers (502) for stretching the tungsten wire to adjust the tungsten wire elongation.

4. The method for preparing a high-strength thick-film 3D mesh according to claim 3, characterized in that: The warping mechanism (4) also includes a mounting frame (406), on the top of which a forward and reverse motor (407) is fixedly mounted by screws. A connecting shaft (408) is fixedly mounted at the output end of the forward and reverse motor (407). A first transmission inner drive belt (405) meshes between the outer surfaces of the multiple transmission gears (404). Three bearing frames (409) are fixed on the outer surface of the limiting frame (401).

5. The method for preparing a high-strength thick-film 3D mesh according to claim 4, characterized in that: The stress relief assembly (5) also includes a pressure-resistant frame (501). The multiple guide rollers (502) are divided into two groups. One group of guide rollers (502) has a driven gear (503) fixedly installed at one end, and the other group of guide rollers (502) has a driving gear (504) fixedly installed at one end. Multiple support frames (505) are fixedly installed on the outer surface of the pressure-resistant frame (501). Servo motors (506) are fixedly installed on the outer surface of the multiple support frames (505) by screws.

6. The method for preparing a high-strength thick-film 3D mesh according to claim 5, characterized in that: The top of the mounting plate (1) is also provided with a weft winding assembly (3), which includes a fixing frame (301). Multiple weft threads (302) are sleeved inside the fixing frame (301) through a take-up roller. The top of each of the multiple take-up rollers is fixed with a drive gear (303). A second transmission inner drive belt (304) meshes between the outer surfaces of the multiple drive gears (303). A support bracket (305) is fixed to the top of the fixed frame (301). A drive motor (306) is fixed to the top of the support bracket (305) by screws. A drive shaft (307) is fixed to the output end of the drive motor (306).

7. The method for preparing a high-strength thick-film 3D mesh according to claim 6, characterized in that: The bottom of the limiting frame (401) is fixedly connected to the top of the mounting plate (1), and the top ends of the plurality of winding rollers (402) extend movably through to the outside of the limiting frame (401). The bottom of the mounting frame (406) is fixedly connected to the top of the limiting frame (401), and the bottom end of the connecting shaft (408) extends movably through to the outside of the mounting frame (406). The bottom end of the connecting shaft (408) is fixedly connected to the top of one of the transmission gears (404).

8. The method for preparing a high-strength thick-film 3D mesh according to claim 7, characterized in that: The bottom of the pressure-resistant frame (501) is fixedly connected to the top of the mounting plate (1). Both ends of the multiple guide rollers (502) extend movably through the outside of the pressure-resistant frame (501). The outer surfaces of the multiple driven gears (503) are respectively meshed with the outer surfaces of the multiple driving gears (504). One end of the output shaft of the multiple servo motors (506) is respectively fixedly connected to the outer surfaces of the multiple driving gears (504).

9. The method for preparing a high-strength thick-film 3D mesh according to claim 8, characterized in that: The bottom of the fixed frame (301) is fixedly connected to the top of the mounting plate (1), and both ends of the plurality of take-up rollers extend movably through the outside of the fixed frame (301). The bottom end of the drive shaft (307) extends movably through the outside of the support bracket (305), and the bottom end of the drive shaft (307) is fixedly connected to the top end of one of the drive gears (303).

10. The method for preparing a high-strength thick-film 3D mesh according to claim 9, characterized in that, Includes the following steps: S1. First, move one end of multiple weft lines (302) to the interior of the corresponding weft line steel heald (205), then insert one end of multiple warp lines (403) into the corresponding insertion holes in the warp line steel heald (203), and then insert them into the warp reed (202); S2. Start the drive motor (306) to drive multiple weft threads (302) to be released outward from their corresponding take-up rollers. Since the guide groove of the weft thread steel sheet heald (205) is wavy and undulating, when the weft thread (302) passes through the guide groove, it will be forced to shuttle along the wave trajectory, forming a curved shape with peaks and troughs. S3. At the same time as starting the drive motor (306), start the forward and reverse motor (407) to release the warp threads (403) set on the surface of multiple take-up rollers (402) outward and pass through the tension sensor (410) corresponding to them respectively to detect the tension of the warp threads (403) until the tension sensor (410) detects that the tension value reaches the required value. S4. Before the warp yarn (403) enters the loom (201), it passes between the outer surfaces of two adjacent guide rollers (502). Multiple servo motors (506) are started, which drive the corresponding drive gear (504) to rotate, thereby driving the guide roller (502) connected to it to rotate. During the rotation of the drive gear (504), the driven gear (503) is driven to rotate in the opposite direction, thereby driving the guide roller (502) connected to it to rotate in the opposite direction. The gentle kneading of the warp yarn (403) automatically releases the local bending and twisting stress of the warp yarn (403).

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