A laser etching auxiliary device special for 3D printing microwave absorbing material

Abstract

The application relates to the field of laser etching technology and discloses a special laser etching auxiliary device for 3D printing microwave absorbing material, which comprises a box body, a running assembly is arranged at the top end of the box body, a rectangular groove is arranged at the top end of the box body, and limit sliding rails are fixedly connected to the bottom end of the rectangular groove in a symmetrical mode. One connecting plate is pulled by a telescopic air cylinder, the V-shaped plates on the two connecting plates are moved towards each other, the limit wheels on the four shorter plates are pressed by the microwave absorbing material and rotate along the rotating shafts, the limit wheels on the longer plates on the V-shaped plates rotate, the torsion spring plates are compressed, the four corners of the microwave absorbing material can be relatively pressed, the microwave absorbing material can be automatically aligned and adjusted, the microwave absorbing material is aligned to the center, the deviation of the position of the manually placed material each time is effectively avoided, the position precision of etching lines is increased, and the working efficiency of the laser etching machine is improved.

Description

Technical Field

[0001] This invention relates to the field of laser etching technology, specifically to a laser etching auxiliary device for 3D printing microwave absorbing materials. Background Technology

[0002] Microwave-absorbing materials are materials that can absorb microwave and electromagnetic energy while reflecting and scattering them minimally; they are also known as radar-absorbing materials or radar stealth materials. The basic principle of microwave absorption is to convert microwave energy into other forms of motion energy through a certain physical mechanism, and then convert it into heat energy through the dissipation of this motion. All forms of lossy motion excited by microwaves can become absorption mechanisms. Using laser etching technology to create nanoscale pits and protrusions on the surface of microwave-absorbing materials can enhance the microwave absorption effect of the materials, thereby assisting the application of 3D printing technology in the field of microwave-absorbing materials and improving the performance and stability of microwave-absorbing materials.

[0003] However, in existing laser etching machines, when performing repeated processing, most of them use the template of the first material target for reprocessing. Since the material and pattern printed on the screen are misaligned, and the position of the material is deviated each time, the uncertainty caused by this deviation will lead to misalignment in etching, abnormal etching lines, and thus greatly reduce the positional accuracy of the etching lines.

[0004] Furthermore, in existing technologies, when using laser etching machines for processing, masking tape is mostly used to cover the areas of the worktable not covered by material in order to prevent defects caused by the material not being evenly absorbed. However, manually applying masking tape to the laser etching machine worktable undoubtedly increases the workload of the workers and reduces the processing efficiency of the laser etching machine.

[0005] Therefore, we propose a laser etching auxiliary device for 3D printing microwave absorbing materials that can automatically center-align and automatically seal the air intake holes. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] In view of this, and in view of the shortcomings of the prior art, the present invention provides a laser etching auxiliary device for 3D printing microwave absorbing materials, so as to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a laser etching auxiliary device for 3D printing microwave absorbing materials, comprising a housing, an operating component at the top of the housing, a rectangular groove at the top of the housing, limit rails symmetrically fixedly connected to the bottom of the rectangular groove, connecting plates symmetrically fixedly connected to the top of the limit rails, limit mechanisms symmetrically provided at the top of the connecting plates, a telescopic cylinder fixedly connected to the left side of the bottom of the rectangular groove, the piston rod of the telescopic cylinder fixedly connected to one side of the bottom of the connecting plate, a Z-shaped connecting rod rotatably connected to the center of the bottom of the rectangular groove, both ends of the Z-shaped connecting rod rotatably connected to the top of the connecting plate, and a purging mechanism provided at the top of the connecting plate.

[0010] Preferably, the operating component includes operating slide rails, all of which are fixedly connected to the left and right sides of the top of the housing. A gantry frame is slidably connected between the top ends of the operating slide rails, and a laser is slidably connected to the front end of the gantry frame.

[0011] Preferably, the limiting mechanism includes a rotating shaft, which is fixedly connected to the left and right sides of the top of the connecting plate. A V-shaped plate is rotatably connected to the top of the rotating shaft, and limiting wheels are rotatably connected to both sides of the top of the V-shaped plate. A torsion spring is fixedly connected between the top of the connecting plate and the bottom of the V-shaped plate.

[0012] Preferably, each of the V-shaped plates is fixedly connected to a connecting rod at its bottom end, and each of the top of the box body is rotatably connected to a rotating rod near the perimeter of the rectangular groove. Each rotating rod is fixedly connected to a roller at the center of its outer surface, and a shielding cloth is fixedly connected between the roller and the outer surface of the connecting rod. Each rotating rod is fixedly connected to a return spring at one end of its outer surface.

[0013] Preferably, the purging mechanism includes push rods, which are fixedly connected to the left and right sides of the top of the connecting plate. Each push rod has a piston head fixedly connected to its front end, and a rubber ring is fixedly installed on the outer surface of each piston head.

[0014] Preferably, piston cylinders are fixedly connected to both the left and right sides of the bottom of the rectangular groove, and air outlet pipes and air inlet pipes are fixedly connected to the outer surface of the piston cylinders.

[0015] Preferably, the inner surface of the piston cylinder is adapted to the outer surface of the piston head.

[0016] Preferably, a one-way valve is fixedly connected to the outer surface of both the air outlet pipe and the air inlet pipe, and a filter screen is fixedly connected to one end of the air inlet pipe.

[0017] Preferably, the top of the box is fixedly connected to the front and rear ends of the rectangular groove, and the bottom of the box is fixedly connected to the four corners of the outer wall.

[0018] Compared with the prior art, the present invention provides a laser etching auxiliary device for 3D printing microwave absorbing materials, which has the following beneficial effects:

[0019] 1. This laser etching auxiliary device for 3D printing microwave absorbing materials can squeeze the four corners of the microwave absorbing material relative to each other and automatically align the microwave absorbing material, making it aligned with the center. This effectively avoids the problem of deviation in the position of the material each time it is placed manually, thereby increasing the positional accuracy of the etching lines, greatly reducing the workload of the workers, and thus improving the working efficiency of the laser etching machine.

[0020] 2. This laser etching auxiliary device for 3D printing microwave absorbing materials can automatically cover the parts of the adsorption plate that are not covered by the microwave absorbing material while centering and aligning the microwave absorbing material. This can effectively prevent the processing defect rate caused by the material not being flattened, thereby improving the processing efficiency of the laser etching machine.

[0021] 3. This laser etching auxiliary device for 3D printing microwave absorbing materials utilizes two push rods at both ends of a connecting plate to push two piston heads at the front end to slide forward along the inner wall of the piston cylinder. This gradually increases the internal volume of the piston cylinder, creating a negative pressure state inside. This causes the piston cylinder to draw air from the external environment through the air inlet pipe, filling the piston cylinder with air. The air inside the piston cylinder is then discharged through the air outlet pipe, cleaning dust and impurities from the microwave absorbing material. Simultaneously, a filter screen installed at the outer end of the air inlet pipe can block dust and impurities near the device from entering the air inlet pipe, preventing a deterioration in the surface quality of the processed microwave absorbing material. This also prevents dust and impurities near the device from being blown back onto the microwave absorbing material through the piston cylinder, thus protecting the health of workshop workers. Attached Figure Description

[0022] Figure 1 This is a front-view stereoscopic structural diagram of a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention;

[0023] Figure 2 This is a top-view three-dimensional structural diagram of a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention;

[0024] Figure 3 A side-view stereoscopic structural diagram of a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention;

[0025] Figure 4 This is a schematic diagram of the adsorption plate in a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the internal structure of the rectangular groove in a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention.

[0027] Figure 6 This invention proposes a laser etching auxiliary device specifically for 3D printing microwave absorbing materials. Figure 5 Schematic diagram of the structure at point A;

[0028] Figure 7 This is a schematic diagram of the Z-shaped connecting rod in a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention.

[0029] Figure 8 This invention proposes a laser etching auxiliary device specifically for 3D printing microwave absorbing materials. Figure 7 Schematic diagram of the structure at point B;

[0030] Figure 9 This is a schematic diagram of the front part of the rectangular groove in a laser etching auxiliary device for 3D printing microwave absorbing materials proposed in this invention.

[0031] The attached diagram lists the components represented by each number as follows:

[0032] 1. Housing; 101. Support base; 102. Running slide rail; 103. Gantry frame; 104. Laser; 2. Adsorption plate; 3. Telescopic cylinder; 4. Rectangular groove; 401. Connecting plate; 402. Rotating shaft; 403. V-shaped plate; 404. Limiting wheel; 405. Torsion spring; 406. Z-shaped connecting rod; 407. Limiting slide rail; 5. Rotating rod; 501. Shielding cloth; 502. Connecting rod; 503. Return spring; 504. Roller; 6. Piston cylinder; 601. Inlet pipe; 602. Outlet pipe; 603. One-way valve; 604. Filter screen; 7. Push rod; 701. Piston head. Detailed Implementation

[0033] 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.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example 1

[0035] Please see Figure 5 , Figure 6 as well as Figure 9As shown, a laser etching auxiliary device for 3D printing microwave absorbing materials includes a housing 1. A running component is provided at the top of the housing 1. A rectangular groove 4 is provided at the top of the housing 1. Limiting slide rails 407 are symmetrically fixedly connected to the bottom of the rectangular groove 4. Connecting plates 401 are symmetrically slidably connected to the top of the limiting slide rails 407. Limiting mechanisms are symmetrically provided at the top of the connecting plates 401. A telescopic cylinder 3 is fixedly connected to the left side of the bottom of the rectangular groove 4. The piston rod of the telescopic cylinder 3 is fixedly connected to one side of the bottom of the connecting plate 401. A Z-shaped connecting rod 406 is rotatably connected to the center of the bottom of the rectangular groove 4. Both ends of the Z-shaped connecting rod 406 are rotatably connected to the top of the connecting plate 401. A blowing mechanism is provided at the top of the connecting plate 401.

[0036] The operating components include operating slide rails 102, which are fixedly connected to the left and right sides of the top of the housing 1. A gantry frame 103 is slidably connected between the tops of the operating slide rails 102, and a laser 104 is slidably connected to the front end of the gantry frame 103.

[0037] The limiting mechanism includes a rotating shaft 402, which is fixedly connected to the left and right sides of the top of the connecting plate 401. A V-shaped plate 403 is rotatably connected to the top of the rotating shaft 402. Limiting wheels 404 are rotatably connected to both sides of the top of the V-shaped plate 403. A torsion spring 405 is fixedly connected between the top of the connecting plate 401 and the bottom of the V-shaped plate 403.

[0038] The top of the box 1 is fixedly connected to the front and rear ends of the rectangular groove 4, and the bottom of the box 1 is fixedly connected to the four corners of the outer wall with a support base 101.

[0039] The effect achieved in Example 1 is that the microwave absorbing material can be automatically aligned and centered, effectively avoiding the problem of deviation in the position of the material each time it is manually placed. This increases the positional accuracy of the etching line, greatly reduces the workload of the workers, and thus improves the working efficiency of the laser etching machine. Example 2

[0040] Please see Figure 2 , Figure 4 as well as Figure 6 As shown, the bottom of the V-shaped plate 403 is fixedly connected to a connecting rod 502, the top of the box 1 is rotatably connected to the rectangular groove 4 around the perimeter, the outer surface of the rotating rod 5 is fixedly connected to a roller 504, the outer surface of the roller 504 and the outer surface of the connecting rod 502 are fixedly connected to a shielding cloth 501, and one end of the outer surface of the rotating rod 5 is fixedly connected to a return spring 503.

[0041] The effect achieved in Example 2 is that while aligning the microwave absorbing material at the center, it can automatically cover the part of the adsorption plate 2 that is not covered by the microwave absorbing material, thereby effectively preventing the processing defect rate caused by the material not being flattened, and thus improving the processing efficiency of the laser etching machine. Example 3

[0042] Please see Figure 5 , Figure 7 as well as Figure 8 As shown, the purging mechanism includes a push rod 7, which is fixedly connected to the left and right sides of the top of the connecting plate 401. A piston head 701 is fixedly connected to the front end of each push rod 7, and a rubber ring is fixedly installed on the outer surface of each piston head 701.

[0043] Piston cylinders 6 are fixedly connected to both the left and right sides of the bottom of the rectangular groove 4. An air outlet pipe 602 and an air inlet pipe 601 are fixedly connected to the outer surface of the piston cylinder 6.

[0044] The inner surface of the piston cylinder 6 is adapted to the outer surface of the piston head 701.

[0045] One-way valves 603 are fixedly connected to the outer surfaces of both the air outlet pipe 602 and the air inlet pipe 601, and a filter screen 604 is fixedly connected to one end of the air inlet pipe 601.

[0046] In the initial state: The X, Y, and Z axes of the laser 104 are all in the initial position of the non-started state, the piston rod of the telescopic cylinder 3 is extended to the farthest position, the two connecting plates 401 at the bottom of the rectangular groove 4 are both located at the farthest position of the opposite end of the limiting slide rail 407, and the Z-shaped connecting rod 406 is in the fully extended state, the four V-shaped plates 403 are all in the fully extended state, the torsion spring 405 is in the natural state unaffected by external force, the shielding cloth 501 around the adsorption plate 2 is all retracted on the outer surface of the roller 504, the reset spring 503 is in the natural state unaffected by external force, and the piston head 701 is attached to the inner wall of the opening of the piston cylinder 6.

[0047] When using this device to perform laser etching on microwave absorbing materials, the microwave absorbing material is first placed on the adsorption plate 2. Then, the telescopic cylinder 3 is activated, causing its piston rod to retract and pull a connecting plate 401 fixed to it to slide along the limiting slide rail 407. Subsequently, the Z-shaped connecting rod 406 retracts relative to each other, causing the two connecting plates 401 to slide towards each other simultaneously. The V-shaped plates 403 on the connecting plates 401 also move towards each other. When the limiting wheel 404 of the shorter plate on the V-shaped plate 403 contacts the side wall of the microwave absorbing material, the limiting wheels 404 on the four shorter plates are etched by the microwave absorbing material. The pressure is applied and rotated along the rotating shaft 402, causing the limiting wheel 404 of the longer plate on the V-shaped plate 403 to rotate accordingly. At the same time, the pressure is applied to the torsion spring 405 to contract and gradually adhere to the side wall of the microwave absorbing material. This allows the four corners of the microwave absorbing material to be squeezed relative to each other and can automatically align and straighten the microwave absorbing material, causing it to align towards the center. This effectively avoids the problem of deviation in the position of the material each time it is manually placed, thereby increasing the positional accuracy of the etching line, greatly reducing the workload of the workers, and improving the working efficiency of the laser etching machine.

[0048] When the two connecting plates 401 slide relative to each other along the limiting slide rail 407, the four V-shaped plates 403 on the two connecting plates 401 also move relative to each other. Then, the four limiting wheels 404 of the shorter plate on the V-shaped plate 403 pull the connecting rods 502 at the front and rear ends to move relative to each other, and pull the shielding cloth 501 on the rollers 504 at the front and rear ends to gradually extend. The two return springs 503 on the two rotating rods 5 retract accordingly, and then cover the air intake holes at the front and rear ends of the adsorption plate 2. When the limiting wheel 404 of the shorter plate on the V-shaped plate 403 contacts the side wall of the microwave absorbing material, it causes the limiting wheel 404 of the longer plate on the V-shaped plate 403 to gradually adhere to the side wall. When the material is placed on the side wall of the microwave absorbing material, the limiting wheel 404 of the longer plate on the V-shaped plate 403 pulls the connecting rod 502 at the bottom to move relative to each other, and pulls the shielding cloth 501 on the rollers 504 at both ends to gradually extend. The two return springs 503 on the two rotating rods 5 retract accordingly, and then cover the air suction holes at both ends of the adsorption plate 2. In this way, while aligning the microwave absorbing material in the center, the part of the adsorption plate 2 not covered by the microwave absorbing material can be automatically covered, which can effectively prevent the processing defect rate caused by the material not being flattened, and thus improve the processing efficiency of the laser etching machine.

[0049] When the two connecting plates 401 slide relative to each other along the limiting slide rail 407, the two push rods 7 at the left and right ends of one connecting plate 401 slide accordingly. Then, the two push rods 7 push the two piston heads 701 at their front ends to slide forward along the inner wall of the piston cylinder 6, so that the internal volume of the piston cylinder 6 gradually increases and the inside gradually enters a negative pressure state, causing it to draw air from the air inlet pipe 601 to the outside environment, so that the piston cylinder 6 is filled with air. At the same time, the filter screen 604 set at the outer end of the air inlet pipe 601 can block the dust and impurities near the device outside the air inlet pipe 601, preventing the dust and impurities near the device from being blown back onto the microwave absorbing material through the piston cylinder 6, which would lead to a deterioration in the surface quality of the microwave absorbing material and also affect the health of the workshop workers.

[0050] After the microwave absorbing material is processed, similarly, the telescopic cylinder 3 is closed, causing its piston rod to extend and push a connecting plate 401 to slide along the limiting slide rail 407. Subsequently, the Z-shaped connecting rod 406 unfolds relative to each other, causing the V-shaped plates 403 on the two connecting plates 401 to slide apart simultaneously. The limiting wheel 404 of the longer plate on the V-shaped plate 403 disengages from the microwave absorbing material, followed by the limiting wheel 404 on the shorter plate. The torsion spring 405 gradually resets, returning to its initial state. When the two connecting plates 401 slide apart along the limiting slide rail 407, the four limiting wheels 404 of the shorter plate on the V-shaped plate 403 pull the connecting rods 502 at both ends. As the rollers 504 at both ends move apart, the shielding cloth 501 on the front and rear ends of the rollers 504 gradually retracts, and the two return springs 503 on the two rotating rods 5 gradually return to their initial state. When the two connecting plates 401 slide apart along the limit slide rail 407, the two push rods 7 on the left and right ends of one connecting plate 401 slide accordingly. Then, the two push rods 7 pull the two piston heads 701 at their front ends to slide backward along the inner wall of the piston cylinder 6, so that the internal volume of the piston cylinder 6 gradually decreases, and the air inside the piston cylinder 6 is discharged through the air outlet pipe 602, and the dust and impurities on the microwave absorbing material are blown clean. Then, the piston head 701 is attached to the inner wall of the opening of the piston cylinder 6.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser etching auxiliary device for 3D printing microwave absorbing materials, comprising a housing (1), characterized in that, The top of the housing (1) is provided with a running component. A rectangular groove (4) is opened at the top of the housing (1). The bottom of the rectangular groove (4) is symmetrically fixedly connected with a limit slide rail (407). The top of the limit slide rail (407) is symmetrically slidably connected with a connecting plate (401). The top of the connecting plate (401) is symmetrically provided with a limit mechanism. A telescopic cylinder (3) is fixedly connected to the left side of the bottom of the rectangular groove (4). The piston rod of the telescopic cylinder (3) is fixedly connected to one side of the bottom of the connecting plate (401). The center of the bottom of the rectangular groove (4) is rotated. A Z-shaped connecting rod (406) is connected to the top of a connecting plate (401) at both ends. A purging mechanism is provided at the top of the connecting plate (401). The limiting mechanism includes a rotating shaft (402), which is fixedly connected to the left and right sides of the top of the connecting plate (401). A V-shaped plate (403) is rotatably connected to the top of the rotating shaft (402). Limiting wheels (404) are rotatably connected to both sides of the top of the V-shaped plate (403). The top of the connecting plate (401) and the bottom of the V-shaped plate (403) are fixedly connected. A torsion spring (405) is connected; a connecting rod (502) is fixedly connected to the bottom end of each V-shaped plate (403); a rotating rod (5) is rotatably connected to the top of the box (1) near the rectangular groove (4) around the perimeter; a roller (504) is fixedly connected to the middle of the outer surface of each rotating rod (5); a shielding cloth (501) is fixedly connected between the outer surface of each roller (504) and the connecting rod (502); a return spring (503) is fixedly connected to one end of the outer surface of each rotating rod (5); the blowing mechanism includes a push rod (7), and the push rod (7) is fixedly connected to On the top left and right sides of the connecting plate (401), the front end of the push rod (7) is fixedly connected to a piston head (701), and a rubber ring is fixedly installed on the outer surface of the piston head (701); on the bottom left and right sides of the rectangular groove (4), a piston cylinder (6) is fixedly connected, and an air outlet pipe (602) and an air inlet pipe (601) are fixedly connected on the outer surface of the piston cylinder (6); an adsorption plate (2) is fixedly connected at the front and rear ends of the rectangular groove (4) at the top of the box (1), and a support base (101) is fixedly connected at the four corners of the bottom outer wall of the box (1).

2. The laser etching auxiliary device for 3D printing microwave absorbing materials according to claim 1, characterized in that, The operating component includes a running slide rail (102), which is fixedly connected to the left and right sides of the top of the housing (1). A gantry frame (103) is slidably connected between the tops of the running slide rails (102), and a laser (104) is slidably connected to the front end of the gantry frame (103).

3. The laser etching auxiliary device for 3D printing microwave absorbing materials according to claim 1, characterized in that, The inner surface of the piston cylinder (6) is adapted to the outer surface of the piston head (701).

4. The laser etching auxiliary device for 3D printing microwave absorbing materials according to claim 1, characterized in that, One-way valves (603) are fixedly connected to the outer surfaces of the air outlet pipe (602) and the air inlet pipe (601), and a filter screen (604) is fixedly connected to one end of the air inlet pipe (601).

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