A flexible curved glass etching device

Abstract

The present invention belongs to the field of glass etching, and particularly relates to a flexible curved glass etching device, which includes a supporting plate, a swing rod, motor A, a square frame, motor B, slide block B, motor C, and an acid spraying mechanism. An arc-shaped supporting plate for placing the curved glass is installed on the bracket, and two swing rods are hinged and swing around the axis of the supporting plate under the drive of motor A. The upper ends of the two swing rods are provided with a square frame, and the slide block B moves in the square frame along the plane where the square frame is located under the combined drive of motor B and motor C. During the process of spraying acid on the etching film to etch the glass, the acid spraying mechanism in the present invention can effectively recover the harmful gases generated by the chemical reaction between HF acid and the glass, ensuring that the HF acid vapor generated during the glass etching will not escape into the working environment and cause harm to the health of the staff.

Description

Technical Field

[0001] The present invention belongs to the field of glass etching, and particularly relates to a flexible curved glass etching device. Background Art

[0002] Flexible curved glass is an important field in the development of glass technology. Flexible curved glass is widely used in the national defense and civilian fields. In the processing of flexible curved glass, an etching process is often used to etch various patterns on the glass surface.

[0003] The current glass etching method is to coat a protective layer on the glass surface, then coat a photoresist layer on the protective layer, use a laser to remove the photoresist layer corresponding to the pattern, and apply HF acid to the glass part corresponding to the pattern where the photoresist layer has been removed to etch the glass.

[0004] For flexible curved glass, the glass may be etched in a curved state, and the HF acid may flow on the curved surface of the glass, resulting in different etching depths at different parts of the pattern, thus unable to ensure the etching quality.

[0005] During the etching process, the HF acid is consumed due to the inability to be recycled in time.

[0006] For the case where HF acid is sprayed onto the curved surface of the glass by spraying, the HF acid vapor generated in the HF acid etching reaction will be emitted into the construction environment and endanger human health. At the same time, the concentration distribution of the sprayed HF acid on the curved surface of the glass is uneven, resulting in uneven etching.

[0007] The present invention designs a flexible curved glass etching device to solve the above problems. Summary of the Invention

[0008] To solve the defects in the prior art, the present invention discloses a flexible curved glass etching device, which is implemented by the following technical solutions.

[0009] A flexible curved glass etching device includes a support plate, swing rods, motor A, a square frame, motor B, slide block B, motor C, and an acid spraying mechanism. An arc-shaped support plate for placing the curved glass is installed on the support, and two swing rods are hinged and swing around the axis of the support plate under the drive of motor A. A square frame is installed at the upper ends of the two swing rods. Slide block B moves in the square frame along the plane where the square frame is located under the combined drive of motor B and motor C. An acid spraying mechanism driven by an electric push rod moves in the chute in the middle of slide block B in a direction perpendicular to the plane where the square frame is located and sprays acid on the curved glass on the lower support plate for etching. An etching film that evenly spreads HF acid to the etching parts thereon by capillary action is covered on the curved glass.

[0010] The acid spraying mechanism includes a round rod, cone A, cone B, spherical bent part, spherical ring, cone C, nozzle, filter, air pump, and electric push rod. The round rod slides in the middle chute of slide B driven by the electric push rod. The lower end of the liquid chute in the middle of the round rod is equipped with a nozzle. A cone B is installed around the nozzle. A cone A is installed outside the cone B, and a cone C is installed outside the cone A. The annular cavity formed between cone A and cylinder B is connected to the filter on the round rod through a hose. The filter is connected to the air pump on the round rod through a hose. The air pump is connected to the annular cavity formed between cone B and cylinder C through a hose. The lower end of cone B has an inward-rolled spherical bent part. A spherical ring with the same center of the sphere as the spherical bent part is installed inside the lower end of cone A.

[0011] As a further improvement of the present technology, the etching film includes an etching layer, capillary material, indicating coating, and pulling part. A layer of capillary material is covered on the surface of the etching layer with an etched hollow etching pattern and made of acid-resistant and water-impermeable material. A layer of indicating coating capable of indicating the acid-base concentration is covered on the surface of the capillary material. One end of the etching layer has a strip-shaped pulling part.

[0012] As a further improvement of the present technology, a slide A driven by motor A moves axially along the hinge axis of the swing rod in the square frame. A slide B driven by motor B moves in the slide A in a direction perpendicular to the hinge axis of the swing rod within the plane of the square frame.

[0013] As a further improvement of the present technology, two screw rods A threadedly engaged with the slide A are installed on the square frame. Sprockets are installed on both of the two screw rods A, and the two sprockets are connected by chain drive. One screw rod A is in transmission connection with the output shaft of motor A.

[0014] As a further improvement of the present technology, two screw rods B threadedly engaged with the slide B are installed on the slide B. Gear A is installed on both of the two screw rods B, and the two gear As are simultaneously engaged with gear B on the slide A.

[0015] As a further improvement of the present technology, the pallet can be a flat plate adapted to flat glass.

[0016] As a further improvement of the present technology, it includes side plates, squeezing roller A, motor D, support roller A, support roller B, adsorption belt, water tank, squeezing roller D, and guide plate, wherein the squeezing roller A, support roller A and support roller B installed between the two side plates are installed with adsorption belt, and squeezing roller A is driven by motor D. The plane where the axis of squeezing roller A and the axis of support roller A are located is inclined to ensure that the HF acid liquid on the etched film squeezed by squeezing roller A and squeezing roller D can completely fall on the adsorption belt. Support roller B presses the adsorption belt into the running water in the bottom water tank; squeezing roller D for squeezing the etched film by cooperating with squeezing roller A and the guide plate for guiding the etched film between squeezing roller A and squeezing roller D are installed between the two side plates; a structure for squeezing and dehydrating the adsorption belt coming out of the water tank and a structure for providing pulling force for the etched film squeezed by squeezing roller A and squeezing roller D are installed between the two side plates.

[0017] As a further improvement of the present technology, the support roller B is installed in the water tank through two fixing rods on the side plate; the bottom side wall of the water tank has a water inlet pipe and a water outlet pipe for allowing the water in it to flow.

[0018] As a further improvement of the present technology, an extrusion roller B and an extrusion roller C for squeezing the water outlet adsorption belt are installed between the two side plates; two telescopic rods A that are extended and retracted along the radial direction and fixed to the side plates are installed at both ends of the roller shaft where the extrusion roller C is located; each telescopic rod A has a spring A for retracting and resetting it; a traction roller A and a traction roller B that are extruded and pulled on the pulling part on the etching film are installed between the two side plates; the roller shaft where the extrusion roller A is located is transmission-connected to the output shaft of the motor E on the side plate; two telescopic rods C that are extended and retracted along the radial direction and fixed to the side plates are installed at both ends of the roller shaft where the extrusion roller B is located; each telescopic rod C has a spring C for retracting and resetting it; two telescopic rods B that are extended and retracted along the radial direction and fixed to the side plates are installed at both ends of the roller shaft where the extrusion roller D is located; each telescopic rod B has a spring B for retracting and resetting it.

[0019] As a further improvement of the present technology, the telescopic rod A is composed of an outer sleeve A and an inner rod A which are mutually nested, and the spring A is located inside the outer sleeve A; the telescopic rod B is composed of an outer sleeve B and an inner rod B which are mutually nested, and the spring B is located inside the outer sleeve B; the telescopic rod C is composed of an outer sleeve C and an inner rod C which are mutually nested, and the spring C is located inside the outer sleeve C.

[0020] Compared with traditional glass etching equipment, the present invention etches various patterns of glass by covering the curved glass with an etching film of a unique structure, so that HF ​​acid can be evenly distributed on the part of the curved glass that needs to be etched without flowing, thereby ensuring the uniformity and etching quality of the curved glass.

[0021] During the process of spraying acid on the etching film to etch the glass in the present invention, the harmful gases generated by the chemical reaction between HF acid and glass can be effectively recovered, ensuring that the HF acid vapor generated during the glass etching process will not escape into the working environment and cause harm to the health of the staff.

[0022] The HF acid recovery equipment in the present invention can completely recover the HF acid carried in the etching film after the glass etching is completed, reducing the loss of HF acid during the glass etching process.

[0023] The structure of the present invention is simple and has a good usage effect. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the overall etching equipment.

[0025] Figure 2 is a schematic cross-sectional view of the etching equipment from two perspectives.

[0026] Figure 3 is a schematic cross-sectional view of the driving structure of the slide A in the etching equipment from two perspectives.

[0027] Figure 4 is a schematic cross-sectional view of the driving structure of the slide B in the etching equipment.

[0028] Figure 5 is a schematic cross-sectional view of the acid spraying mechanism from two perspectives.

[0029] Figure 6 is a schematic cross-sectional view of the cooperation between the etching film and the pallet.

[0030] Figure 7 is a schematic diagram of the HF acid recovery equipment from two perspectives.

[0031] Figure 8 is a schematic cross-sectional view of the cooperation between the HF acid recovery equipment and the etching film.

[0032] Figure 9 is a schematic cross-sectional view of the structure where the support roller B is located in the HF acid recovery equipment.

[0033] Figure 10 is a schematic cross-sectional view of the cooperation between the pressing roller A and the pressing roller D in the HF acid recovery equipment.

[0034] Figure 11 is a schematic cross-sectional view of the cooperation between the traction roller A and the traction roller B in the HF acid recovery equipment.

[0035] Figure 12 is a schematic cross-sectional view of the cooperation between the pressing roller B and the pressing roller C in the HF acid recovery equipment.

[0036] Names of the reference numerals in the figure: 1, support; 2, pallet; 3, swing rod; 4, motor A; 5, square frame; 6, slide A; 7, screw A; 8, motor B; 9, sprocket; 10, chain; 11, slide B; 12, screw B; 13, motor C; 14, gear A; 15, gear B; 16, pickling mechanism; 17, round rod; 18, liquid tank; 19, cone A; 20, cone B; 21, spherical bend; 22, spherical ring; 23, cone C; 24, nozzle; 25, filter; 26, air pump; 27, electric push rod; 28, etching film; 29, etching layer; 30, etching pattern; 31, capillary material; 32, indicating coating; 33, pulling part; 34, HF acid recovery equipment; 35, side plate; 36, pressing roller A; 37, motor D; 38, supporting roller A; 39, supporting roller B; 40, fixing rod; 41, adsorption belt; 42, pressing roller B; 43, pressing roller C; 44, telescopic rod A; 45, outer sleeve A; 46, spring A; 47, inner rod A; 48, water tank; 49, water inlet pipe; 50, water outlet pipe; 51, pressing roller D; 52, telescopic rod B; 53, outer sleeve B; 54, spring B; 55, inner rod B; 56, guiding plate; 57, traction roller A; 58, motor E; 59, traction roller B; 60, telescopic rod C; 61, outer sleeve C; 62, spring C; 63, inner rod C; 64, glass. Detailed implementation mode

[0037] The attached drawings are all schematic diagrams of the implementation of the present invention for facilitating the understanding of the structural operation principle. The specific product structure and proportional dimensions can be determined according to the use environment in combination with conventional technologies.

[0038] As Figure 1 、 2 shown, it includes a pallet 2, a swing rod 3, a motor A 4, a square frame 5, a motor B 8, a slide B 11, a motor C 13, and a pickling mechanism 16. Among them, as Figure 1 、 2 shown, an arc-shaped pallet 2 for placing the curved glass 64 is installed on the support 1, and two swing rods 3 that swing around the axis of the pallet 2 under the drive of the motor A 4 are hinged, and a square frame 5 is installed at the upper ends of the two swing rods 3; as Figure 3 、 4 shown, the slide B 11 moves in the square frame 5 along the plane where the square frame 5 is located under the combined drive of the motor B 8 and the motor C 13; as Figure 2 、 5 shown, in the chute in the middle of the slide B 11, a pickling mechanism 16 that is driven by the electric push rod 27 and pickles and etches the curved glass 64 on the lower pallet 2 moves in a direction perpendicular to the plane where the square frame 5 is located; as Figure 1 、 2 、6 shown, an etching film 28 that evenly spreads HF acid to the etching part thereon through capillary action is covered on the curved glass 64.

[0039] like Figure 5 As shown, the acid spraying mechanism 16 includes a round rod 17, a cone A19, a cone B20, a ball bend 21, a ball ring 22, a cone C23, a nozzle 24, a filter 25, an air pump 26, and an electric push rod 27, wherein Figure 5 As shown, the round rod 17 slides in the middle slide groove of the slide seat B11 driven by the electric push rod 27, a nozzle 24 is installed at the lower end of the liquid tank 18 in the middle of the round rod 17, a cone B20 is installed around the nozzle 24, a cone A19 is installed outside the cone B20, and a cone C23 is installed outside the cone A19; the annular cavity formed between the cone A19 and the cylinder B is connected to the filter 25 on the round rod 17 through a hose, the filter 25 is connected to the air pump 26 on the round rod 17 through a hose, and the air pump 26 is connected to the annular cavity formed between the cone B20 and the cylinder C through a hose; the lower end of the cone B20 has an inwardly rolled ball bend 21, and the inner side of the lower end of the cone A19 is installed with a ball ring 22 with the same spherical center as the ball bend 21.

[0040] like Figure 6 As shown, the etching film 28 includes an etching layer 29, a capillary material 31, an indicator coating 32, and a pulling portion 33. Figure 6 As shown, the etching layer 29 having an etched hollow etching pattern and being made of acid-resistant and waterproof material is covered with a layer of wicking material 31, and the surface of the wicking material 31 is covered with a layer of indicating coating 32 that can indicate acid and alkali concentration; one end of the etching layer 29 has a long strip pulling portion 33.

[0041] like Figure 3 As shown, in the frame 5, a slide A6 driven by a motor A4 moves axially along the hinge axis of the rocker 3, and a slide B11 driven by a motor B8 moves in the slide A6 in a direction perpendicular to the hinge axis of the rocker 3 within the plane where the frame 5 is located.

[0042] like Figure 3 As shown, the square frame 5 is equipped with two screws A7 that are threadedly matched with the slide seat A6, and sprockets 9 are installed on the two screws A7. The two sprockets 9 are connected by a chain 10; one screw A7 is connected by a transmission to the output shaft of the motor A4.

[0043] like Figure 4 As shown, two screws B12 threadedly matched with the slide B11 are installed on the slide B11, and gears A14 are installed on the two screws B12. The two gears A14 are meshed with the gear B15 on the slide A6 at the same time.

[0044] like Figure 1 , 2 As shown, the support plate 2 can be a flat plate adapted to the flat glass 64 .

[0045] like Figure 7 ,8 As shown, it includes side plates 35, extrusion roller A36, motor D37, support roller A38, support roller B39, adsorption belt 41, water tank 48, extrusion roller D51, and guide plate 56. Among them, as Figure 7 , 8 , and as shown in 10, an adsorption belt 41 is installed on the extrusion roller A36, support roller A38, and support roller B39 installed between the two side plates 35, and the extrusion roller A36 is driven by the motor D37. The plane where the axis of the extrusion roller A36 and the axis of the support roller A38 are located is inclined to ensure that the HF acid solution at the extrusion points of the etching film 28 by the extrusion roller A36 and the extrusion roller D51 can completely fall on the adsorption belt 41. The support roller B39 presses the adsorption belt 41 into the flowing water in the bottom water tank 48; between the two side plates 35, an extrusion roller D51 that squeezes the etching film 28 in cooperation with the extrusion roller A36 and a guide plate 56 that guides the etching film 28 between the extrusion roller A36 and the extrusion roller D51 are installed; between the two side plates 35, a structure for squeezing and dewatering the adsorption belt 41 coming out of the water tank 48 and a structure for providing a pulling force for the etching film 28 squeezed by the extrusion roller A36 and the extrusion roller D51 are installed.

[0046] As Figure 8 , 9 shown, the support roller B39 is installed in the water tank 48 through two fixing rods 40 on the side plate 35; the bottom side wall of the water tank 48 has a water inlet pipe 49 and a water outlet pipe 50 for making the water body flow therein.

[0047] As Figure 8 , 12 shown, an extrusion roller B42 and an extrusion roller C43 for squeezing the water outlet adsorption belt 41 are installed between the two side plates 35; two telescopic rods A44 that extend radially along its axis and are fixed to the side plate 35 are installed at both ends of the roller shaft where the extrusion roller C43 is located; each telescopic rod A44 has a spring A46 for its telescopic reset; as Figure 8 , 11 shown, a traction roller A57 and a traction roller B59 for squeezing and pulling the pulling part 33 on the etching film 28 are installed between the two side plates 35; the roller shaft where the extrusion roller A36 is located is in transmission connection with the output shaft of the motor E58 on the side plate 35; two telescopic rods C60 that extend radially along its axis and are fixed to the side plate 35 are installed at both ends of the roller shaft where the extrusion roller B42 is located; each telescopic rod C60 has a spring C62 for its telescopic reset; as Figure 8 , 10 shown, two telescopic rods B52 that extend radially along its axis and are fixed to the side plate 35 are installed at both ends of the roller shaft where the extrusion roller D51 is located; each telescopic rod B52 has a spring B54 for its telescopic reset.

[0048] As Figure 10 , 11As shown in Fig. 12, the telescopic rod A44 is composed of an outer sleeve A45 and an inner rod A47 which are sleeved with each other, and a spring A46 is located inside the outer sleeve A45; the telescopic rod B52 is composed of an outer sleeve B53 and an inner rod B55 which are sleeved with each other, and a spring B54 is located inside the outer sleeve B53; the telescopic rod C60 is composed of an outer sleeve C61 and an inner rod C63 which are sleeved with each other, and a spring C62 is located inside the outer sleeve C61.

[0049] The working process of the present invention is as follows:

[0050] When the present invention is needed to etch the curved glass 64, the pallet 2 is replaced with an arc shape, the curved glass 64 is placed on the pallet 2 and an etching film 28 is pasted on the surface of the glass 64, and the motor B8 and the motor C13 are started to drive the acid spraying mechanism 16 to move above one end of the glass 64 and be in the middle of the slide seat A6.

[0051] The electric push rod 27 is started to drive the acid spraying mechanism 16 to move a certain amplitude towards the glass 64, so that the lower end of the acid spraying mechanism 16 is close to the glass 64. The air pump 26 is started and acid spraying etching is carried out through the nozzle 24. The air pump 26 discharges the air in the annular space between the cone A19 and the cone B20 into the annular space between the cone C23 and the cone A19 through the filter 25. A negative pressure is generated in the annular space between the cone A19 and the cone B20. The air in the annular space between the cone C23 and the cone A19 is exhausted to the surrounding to form an air wall to prevent the acid vapor from escaping to the surrounding. A space is formed between the spherical ring 22 and the lower end of the cone A19 to form a vortex to weaken the air entering the cone B20 or the space between the cone B20 and the cone A19. At the same time, the motor A4 is started to drive the acid spraying mechanism 16 to reciprocate swing for one cycle, so that the acid spraying mechanism 16 completes the acid spraying etching of a section of the glass 64. Then the motor B8 is started to drive the acid spraying mechanism 16 to move a certain amplitude along the axial direction of the curved glass 64. At the same time, the motor A4 drives the acid spraying mechanism 16 to reciprocate swing and completes the acid spraying etching of the second section of the glass 64. In this way, the whole acid spraying etching of the curved glass 64 is finally completed.

[0052] When the present invention is needed to etch the flat glass 64, the pallet 2 is replaced with a flat plate, the flat glass 64 is placed on the pallet 2 and an etching film 28 is pasted on the surface of the glass 64, and the motor A4 is started to drive the square frame 5 to be in a horizontal state.

[0053] Start the electric push rod 27 to drive the acid spraying mechanism 16 to move a certain distance towards the glass 64, so that the lower end of the acid spraying mechanism 16 is close to the glass 64. Start the air pump 26 and spray acid for etching through the nozzle 24. The air pump 26 discharges the air in the annular space between the cone A 19 and the cone B 20 to the annular space between the cone C 23 and the cone A 19 through the filter 25. A negative pressure is generated in the annular space between the cone A 19 and the cone B 20. The air in the annular space between the cone C 23 and the cone A 19 is exhausted to the surroundings and forms an air wall to prevent the acid vapor from escaping to the surroundings. The space formed between the spherical ring 22 and the lower end of the cone A 19 forms a vortex to weaken the air of the air wall from entering the cone B 20 or the space between the cone B 20 and the cone A 19. At the same time, start the motor B 8 and the motor C 13 to drive the acid spraying mechanism 16 to move in the horizontal plane, so that the acid spraying mechanism 16 completes the acid spraying and etching of the flat glass 64.

[0054] During the process of spraying acid on the glass 64 for etching, the acid liquid sprayed by the nozzle 24 is rarely scattered to the surroundings under the guidance of the spherical bending part 21 at the lower end of the cone B 20. The acid-containing air that escapes is guided by the spherical ring 22 and under the negative pressure in the space between the cone A 19 and the cone B 20, and reaches the space between the cone A 19 and the cone C 23 through the filter 25 and the air pump 26 and replenishes to form an air wall. The filter 25 filters and absorbs the HF acid in the air, avoiding the HF acid being discharged through the space between the cone A 19 and the cone C 23 and polluting the outside air.

[0055] After the etching film 28 on the glass 64 receives the acid liquid, the indicator coating 32 on it will show a color to ensure that the capillary material 31 in the etching film 28 uniformly adsorbs a certain concentration of acid liquid. The capillary material 31 in the etching film 28 uniformly penetrates the absorbed acid liquid and etches the glass 64 uniformly, and avoids the acid liquid from flowing on the curved glass 64.

[0056] After the etching of the glass 64 is completed, remove the etching film 28 from the glass 64 and place it on the guide plate 56 of the HF acid recovery device 34, so that the pulling part 33 on the etching film 28 passes through between the squeezing roller A 36 and the squeezing roller D 51 and is clamped between the traction roller A 57 and the traction roller B 59.

[0057] At the same time, start the motor D 37 and the motor E 58. The motor D 37 drives the squeezing roller A 36 to rotate, the squeezing roller A 36 drives the adsorption belt 41 to move, and the adsorption belt 41 drives the support roller A 38, the support roller B 39, the squeezing roller B 42 and the squeezing roller C 43 to rotate. At the same time, the motor E 58 drives the traction roller A 57 to rotate. The traction roller A 57 pulls the etching film 28 outwards under the pressing cooperation of the traction roller B 59, and the etching film 28 drives the squeezing roller D 51 to rotate.

[0058] The acid solution in the etching film 28 flows onto the adsorption belt 41 under the extrusion of the extrusion roller D51 and is adsorbed by the adsorption belt 41. The adsorption belt 41 carries the acid solution into the water tank 48 and is washed clean by the running water in the water tank 48. The adsorption belt 41 with the washed acid solution carries water and moves between the extrusion roller B42 and the extrusion roller C43. The water in the adsorption belt 41 falls into the water tank 48 after being extruded by the extrusion roller B42 and the extrusion roller C43.

[0059] After the etching film 28 completely passes through the extrusion roller A36 and the extrusion roller D51, the recovery of the acid solution therein is completed. The etching film 28 after the acid solution recovery can be used again for etching the new glass 64.

[0060] In summary, the beneficial effects of the present invention are as follows: The present invention etches various patterns on the curved glass 64 by covering the etching film 28 with a specific structure, so that the HF acid can be evenly distributed on the parts of the curved glass 64 that need to be etched and will not flow, ensuring the uniformity and etching quality of the etching of the curved glass 64.

[0061] During the process of spraying acid on the etching film 28 to etch the glass 64, the spraying acid mechanism 16 in the present invention can effectively recover the harmful gases generated by the chemical reaction between the HF acid and the glass 64, ensuring that the HF acid vapor generated during the etching of the glass 64 will not be lost into the working environment and cause harm to the health of the staff.

[0062] The HF acid recovery device 34 in the present invention can completely recover the HF acid carried in the etching film 28 after etching the glass 64, reducing the loss of HF acid during the etching process of the glass 64.

Claims

1. A flexible curved glass etching device, characterized in that: It includes a pallet, a swing rod, Motor A, a square frame, Motor B, Slide B, Motor C, and an acid spraying mechanism. An arc-shaped pallet for placing the curved glass is installed on the bracket, and two swing rods are hinged, which swing around the axis of the pallet under the drive of Motor A. A square frame is installed at the upper ends of the two swing rods. Slide B moves within the square frame along the plane of the square frame under the combined drive of Motor B and Motor C; in the chute in the middle of Slide B, an acid spraying mechanism that is driven by an electric push rod and sprays acid etch on the curved glass on the lower pallet moves in a direction perpendicular to the plane of the square frame; an etching film that evenly spreads HF acid to the etched part thereon through capillary action covers the curved glass; The acid spraying mechanism includes a round rod, Cone A, Cone B, a spherical bend, a spherical ring, Cone C, a nozzle, a filter, an air pump, and an electric push rod. The round rod slides in the chute in the middle of Slide B under the drive of the electric push rod. A nozzle is installed at the lower end of the liquid groove in the middle of the round rod. Cone B is installed around the nozzle. Cone A is installed outside Cone B, and Cone C is installed outside Cone A; the annular cavity formed between Cone A and Cylinder B is connected to the filter on the round rod through a hose. The filter is connected to the air pump on the round rod through a hose. The air pump is connected to the annular cavity formed between Cone B and Cylinder C through a hose; the lower end of Cone B has an inward-rolled spherical bend, and a spherical ring concentric with the spherical bend is installed inside the lower end of Cone A; In the square frame, Slide A driven by Motor A moves axially along the hinge axis of the swing rod. Slide B driven by Motor B moves within Slide A along a direction perpendicular to the hinge axis of the swing rod in the plane of the square frame; Two screw rods A that are threadedly engaged with Slide A are installed on the square frame. Sprockets are installed on both of the two screw rods A, and the two sprockets are connected by chain drive; one screw rod A is in transmission connection with the output shaft of Motor A; Two screw rods B that are threadedly engaged with Slide B are installed on Slide B. Gears A are installed on both of the two screw rods B, and the two Gears A are simultaneously engaged with Gear B on Slide A.

2. The flexible curved glass etching device according to claim 1, wherein: The etching film includes an etching layer, a capillary material, an indicating coating, and a pulling part. A layer of capillary material covers the surface of the etching layer that has an etched hollow etching pattern and is made of acid-resistant and water-impermeable material. An indicating coating that can indicate the acid-base concentration covers the surface of the capillary material; one end of the etching layer has a strip-shaped pulling part.

3. The flexible curved glass etching device according to claim 1, characterized in that: The pallet can be a flat plate suitable for flat glass.

4. A flexible curved glass etching device according to claim 1, characterized in that: It also includes an HF acid recovery device. The HF acid recovery device includes side plates, Squeezing Roller A, Motor D, Supporting Roller A, Supporting Roller B, an adsorption belt, a water tank, Squeezing Roller D, and a guiding plate. An adsorption belt is installed on Squeezing Roller A, Supporting Roller A, and Supporting Roller B installed between the two side plates. Squeezing Roller A is driven by Motor D. The plane where the axis of Squeezing Roller A and the axis of Supporting Roller A are located is inclined. Supporting Roller B presses the adsorption belt into the flowing water in the bottom water tank; between the two side plates, Squeezing Roller D that squeezes the etching film in cooperation with Squeezing Roller A and a guiding plate that guides the etching film to between Squeezing Roller A and Squeezing Roller D are installed; between the two side plates, a structure for squeezing and dewatering the adsorption belt coming out of the water tank and a structure for providing a pulling force for the etching film squeezed by Squeezing Roller A and Squeezing Roller D are installed.

5. A flexible curved glass etching device according to claim 4, characterized in that: The supporting roller B is installed in the water tank through two fixing rods on the side plates; the side wall at the bottom of the water tank is provided with a water inlet pipe and a water outlet pipe for the water flow inside.

6. A flexible curved glass etching device according to claim 4, characterized in that: An extrusion roller B and an extrusion roller C for extruding the water outlet adsorption belt are installed between the two side plates; two telescopic rods A that extend radially along its axis and are fixed to the side plates are installed at both ends of the roller shaft where the extrusion roller C is located; a spring A for telescopic reset is provided in each telescopic rod A; a traction roller A and a traction roller B for squeezing and pulling the pulling part on the etching film are installed between the two side plates; the roller shaft where the extrusion roller A is located is in transmission connection with the output shaft of the motor E on the side plate; two telescopic rods C that extend radially along its axis and are fixed to the side plates are installed at both ends of the roller shaft where the extrusion roller B is located; a spring C for telescopic reset is provided in each telescopic rod C; two telescopic rods B that extend radially along its axis and are fixed to the side plates are installed at both ends of the roller shaft where the extrusion roller D is located; a spring B for telescopic reset is provided in each telescopic rod B.

7. A flexible curved glass etching device according to claim 6, characterized in that: The telescopic rod A is composed of an outer sleeve A and an inner rod A that are sleeved with each other, and the spring A is located inside the outer sleeve A; the telescopic rod B is composed of an outer sleeve B and an inner rod B that are sleeved with each other, and the spring B is located inside the outer sleeve B; The telescopic rod C is composed of an outer sleeve C and an inner rod C that are sleeved with each other, and the spring C is located inside the outer sleeve C.

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