Equipment and method for acid etching on the front side of glass and coating the back side with acid-resistant film

Abstract

The present invention provides a device and method for acid-etching the front side of glass and coating the back side with an acid-resistant film, comprising a rotating transition cabin, the rotating transition cabin performs axial rotation around a rotating shaft installed at the axis center thereof, the sealed telescopic tubes on both sides are fixedly connected to a detachable acid etching box at one end away from a telescopic sleeve, a negative pressure suction cup is fixedly installed on the telescopic arm of the electric hydraulic telescopic cylinder, a spherical liquid channel is provided in the middle of the rotating transition cabin, the gear connecting rods on both sides are movably meshed with driving racks respectively, and a glass matching groove is provided on the upper part of the coating platform. The present invention completely avoids the phenomenon of acid etching of the protective surface due to the adhesion of the acid etching liquid by coating the protective surface with an acid-resistant film during the acid etching process, the acid etching liquid is stored in the telescopic sleeve and the sealed telescopic tube, the film taking process does not need to contact the acid etching liquid, and the coating quality is high, which greatly reduces the harm of long-term exposure of workers to the air environment and improves the glass processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of glass processing equipment, in particular to equipment and method for acid etching the front side of glass and coating the back side with an acid-resistant film. Background Art

[0002] A glass processing protection device for glass acid etching with a publication number of "CN205907184U" in the prior art belongs to the technical field of glass processing equipment, and includes a base and a protection device. The base is also connected to an operating terminal. The protection device is composed of a plurality of glass adsorption devices, a support frame, a baffle, and a rubber protection plate. A sealing area is formed between the support frame, the baffle, the rubber protection plate and the glass adsorption device. The glass adsorption device includes a rubber suction cup, a piston, a cylinder and an air compressor. Two vacuum air holes are provided in the piston, and the two vacuum air holes include a negative pressure air inlet hole and a positive pressure air outlet hole. A through hole is provided in the rubber protection plate. The rubber suction cup and the piston are sealed and sleeved in the through hole. The rubber protection plate is composed of a hard protective layer and a flexible protective layer. The above device can adapt to glass acid etching processing of different sizes, effectively protect the protected surface of the glass, and prevent dust and pickling liquid from entering the vacuum air hole.

[0003] However, the above-mentioned glass processing protection device for glass acid etching still has obvious defects during use: 1. The above-mentioned device can only protect the protected surface of the glass from acid etching. After the glass is acid-etched, a small amount of acid etching liquid will still remain on the acid-etched surface. During the lamination process of the glass after acid etching, the remaining acid etching liquid contacts the protected cotton and easily causes acid etching of the protected surface, thereby causing problems such as a decrease in yield; 2. In the acid etching operating table in the prior art, the acid etching liquid is usually exposed to the air, and the film removal process often requires manual wearing of rubber gloves to remove the film. Due to the large amount of volatilization of the acid etching gas and the long-term contact with the acid etching liquid, it is easy to cause safety risks and is not conducive to the health of production personnel. Summary of the invention

[0004] The object of the present invention is to provide a device and method for acid etching the front side of glass and coating the back side with an acid-resistant film, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for acid etching on the front side of glass and coating the back side with an acid-resistant film, comprising a rotating transition cabin, the rotating transition cabin performs axial rotation around a rotating shaft installed at the axis center thereof, a pair of centrally symmetrical telescopic sleeves are arranged on the upper and lower sides of the rotating transition cabin, sealed telescopic tubes are movably inserted in the telescopic sleeves on both sides through telescopic springs, the sealed telescopic tubes on both sides are fixedly connected to a detachable acid etching box at one end away from the telescopic sleeve, a sealing groove is provided at the edge of the detachable acid etching box, a sealing rubber ring is installed in the sealing groove, a pair of electric hydraulic telescopic cylinders are also fixedly installed on the detachable acid etching boxes on both sides, negative pressure suction cups are also fixedly installed on the telescopic arms of the electric hydraulic telescopic cylinders, and the negative pressure suction cups are connected to the air inlet and outlet of a micro negative pressure pump arranged outside the detachable acid etching box through the telescopic arms;

[0007] A spherical liquid channel is provided in the middle of the rotating transition cabin, a ball valve is movably installed in the spherical liquid channel, an etching liquid channel connected to the telescopic sleeve is provided on the rotating transition cabins on the upper and lower sides of the spherical liquid channel, a rotating through hole movably matched with the upper and lower etching liquid channels is provided on the ball valve, gear connecting rods are fixedly installed on both sides of the ball valve, the gear connecting rods extend to the outside of the rotating transition cabin through the sealing holes provided on both sides of the rotating transition cabin, the gear connecting rods on both sides are movably meshed with the driving racks respectively, and the driving racks are fixedly installed on the outer sides of the upper and lower sealed telescopic tubes respectively;

[0008] A coating platform is provided below the rotating transition cabin for lifting, a glass matching groove is provided on the upper part of the coating platform, the upper and lower detachable acid etching boxes are alternately coordinated with the coating platform through the axis rotation of the rotating transition cabin, and cutting blades for entering the glass matching groove are also provided on the outer sides of the upper and lower detachable acid etching boxes.

[0009] Preferably, a liquid collecting trough is provided inside the coating platform, and the glass matching groove is connected to the liquid collecting trough through a liquid flow hole. The surface of the glass matching groove is covered with an exhaust film whose four corners are raised in the middle and flush with the bottom of the glass matching groove in an expanded state. Coil flow grooves for acid-resistant film to pass through are also provided on both sides of the coating platform.

[0010] Preferably, a boosting groove is further provided on one side of the liquid collecting groove, a boosting piston is movably installed in the boosting groove, and the boosting piston is connected to the inner side of the boosting groove via a boosting spring on the side of the boosting piston away from the liquid collecting groove.

[0011] Preferably, the coating station is located on both sides of the coil flow groove and has active rollers and driven rollers movably installed thereon through brackets, and the roller shaft of the active roller is fixedly connected to the driving shaft of the winding motor.

[0012] Preferably, the rotating shaft extends to the interior of the rotating transition cabin and is connected to the spherical liquid channel, the ball valve is provided with an etching liquid filling hole located in the radial direction of the rotating through hole, the etching liquid filling hole is connected to the rotating through hole, a one-way valve for one-way entry into the rotating through hole is arranged in the etching liquid filling hole, a filling channel is provided inside the rotating shaft, a liquid inlet hole connected to the filling channel is also provided on the side of the rotating shaft, a filling ring is movably sleeved on the outer side of the rotating shaft where the liquid inlet hole is located, and the outer side of the filling ring is connected to an external filling pump through a pipeline.

[0013] A method for acid-etching the front side of glass and coating the back side with an acid-resistant film, using the above-mentioned equipment for acid-etching the front side of glass and coating the back side with an acid-resistant film, comprises the following steps:

[0014] Step 1: The detachable acid etching box is kept fixed in the upper and lower positions by rotating the rotating shaft, and the glass piece to be etched and coated is installed in the upper detachable acid etching box, and the electric hydraulic telescopic cylinder on the same side is used to move to one side of the glass piece, so that the negative pressure suction cup is attached to the surface of the glass piece, and the glass piece is adsorbed by the micro negative pressure pump provided in the electric hydraulic telescopic cylinder, and the rotating shaft is driven by the motor to rotate 180 degrees so that the detachable acid etching box on the side where the glass piece is installed is at the lowest position;

[0015] Step 2: Add the etching liquid into the upper detachable acid etching box, and install the glass sheet to be etched and coated in the detachable acid etching box in the same manner as in step 1;

[0016] Step 3: The coating table is operated to rise by the lifting mechanism, so that the coating table cooperates with the detachable acid etching box below, and continues to push the detachable acid etching box and the sealed telescopic tube to rise. The rising of the sealed telescopic tube causes the driving rack to move upward until it meshes with the gear connecting rod, and then pushes the gear connecting rod to rotate. The rotation of the gear connecting rod drives the ball valve to rotate 90° so that the rotating through hole is connected with the upper and lower acid etching liquid channels. At this time, the acid etching liquid filled from the upper part can fall into the detachable acid etching box at the bottom, so that the acid etching liquid contacts the inner side of the glass sheet installed at the bottom, thereby completing the acid etching operation. Under the upward squeezing of the coating table, the glass sheet seals the internal and external environment of the detachable acid etching box. At this time, the electric hydraulic telescopic cylinder can be separated from the adsorption of the glass sheet, ensuring that all positions of the glass sheet are evenly etched;

[0017] Step 4: During the rising process of the laminating table, the cutting blade is used to cut the acid-resistant film, and the four corners of the central protrusion are acted upon by the exhaust film flush with the bottom of the glass matching groove, so as to ensure that the acid-resistant film is adsorbed from the middle to the surrounding of the glass sheet, effectively preventing bubbles from being generated during the laminating process. After the laminating and acid etching are completed, the lifting mechanism operates the laminating table to descend and separate from the detachable acid etching box, and the rotating shaft rotates 180° at this time;

[0018] Step 5: The glass piece that has been acid-etched and coated is transferred to the top. At this time, the electric hydraulic telescopic cylinder is used to lift the glass piece out, and step 1 is repeated to install a new glass piece to be processed. This cycle is repeated to achieve continuous coating and acid etching of the glass piece.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention effectively protects the protective surface by coating the protective surface with an acid-resistant film during the acid etching process, completely avoiding the phenomenon of the protective surface being etched by the acid etching liquid, greatly improving the glass acid etching yield, and simultaneously completing the glass etching and coating processes, greatly improving the glass processing efficiency;

[0021] 2. The etching liquid of the present invention is stored in the telescopic sleeve and the sealed telescopic tube, and contacts the glass sheet to be etched in sequence with the rotation of the rotating transition cabin 1. During the entire etching process, the etching liquid rarely contacts the external environment, thereby reducing the volatilization of the etching liquid. At the same time, the etched glass sheet is separated from the detachable etching box under the push of the electric hydraulic telescopic cylinder, and there is no need to enter the etching liquid with both hands to take the sheet, which greatly reduces the harm of long-term exposure of workers to the air environment;

[0022] 3. The present invention ensures that the gas is exhausted from the middle of the glass sheet to the surrounding during the coating process through the special structure of the exhaust film 25, thereby avoiding the generation of bubbles between the glass sheet and the acid-resistant film after coating, thereby improving the coating quality.

[0023] The present invention covers the protective surface with an acid-resistant film during the acid etching process, thereby completely avoiding the phenomenon that the protective surface is corroded due to the adhesion of the acid etching liquid. The acid etching liquid is stored in the telescopic sleeve and the sealed telescopic tube. The film taking process does not need to contact the acid etching liquid, and the coating quality is high, which greatly reduces the harm of long-term exposure of workers to the air environment and improves the glass processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the rotation state of the ball valve of the present invention;

[0026] Figure 3 It is a three-dimensional schematic diagram of the rotary transition cabin connection structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the overall structure of the laminating platform of the present invention;

[0028] Figure 5 It is a schematic diagram of the enlarged structure of the A region of the present invention;

[0029] Figure 6 It is a schematic diagram of the enlarged structure of the B region of the present invention;

[0030] Figure 7 It is a schematic diagram of the enlarged structure of the C region of the present invention;

[0031] Figure 8 It is a schematic diagram of the enlarged structure of the D region of the present invention;

[0032] Fig. 9 It is a schematic diagram of the connection structure of the acid etching liquid filling hole of the present invention.

[0033] In the figure: 1 rotating transition cabin, 2 rotating shaft, 3 telescopic sleeve, 4 telescopic spring, 5 sealing telescopic tube, 6 detachable acid etching box, 7 sealing groove, 8 sealing rubber ring, 9 electric hydraulic telescopic cylinder, 10 telescopic arm, 11 negative pressure suction cup, 12 micro negative pressure pump, 13 spherical liquid channel, 14 ball valve, 15 acid etching liquid channel, 16 rotating through hole, 17 gear connecting rod, 18 sealing hole, 19 driving rack, 20 coating table, 21 glass matching groove, 22 cutting blade, 23 collecting groove, 24 liquid flow hole, 25 exhaust film, 26 acid resistant film, 27 coil flow groove, 28 boosting groove, 29 boosting piston, 30 boosting spring, 31 bracket, 32 active roller, 33 driven roller, 34 winding motor, 35 acid etching liquid filling hole, 36 one-way valve, 37 filling channel, 38 liquid inlet hole, 39 filling ring, 40 pipeline, 41 glass sheet. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example:

[0036] See also Figure 1-9 , the present invention provides a technical solution:

[0037] Embodiment 1:

[0038] A glass front acid etching and back acid-resistant film coating equipment, comprising a rotating transition cabin 1, the rotating transition cabin 1 performs axial rotation around a rotating shaft 2 installed at its axis, a pair of centrally symmetrical telescopic sleeves 3 are arranged on the upper and lower sides of the rotating transition cabin 1, sealed telescopic tubes 5 are movably inserted in the telescopic sleeves 3 on both sides through telescopic springs 4, the sealed telescopic tubes 5 on both sides are fixedly connected to a detachable acid etching box 6 at one end away from the telescopic sleeve 3, a sealing groove 7 is opened at the edge of the detachable acid etching box 6, a sealing rubber ring 8 is installed in the sealing groove 7, a pair of electric hydraulic telescopic cylinders 9 are also fixedly installed on the detachable acid etching boxes 6 on both sides, and a negative pressure suction cup 11 is also fixedly installed on the telescopic arm 10 of the electric hydraulic telescopic cylinder 9, and the negative pressure suction cup 11 is connected to the air inlet and outlet of a micro negative pressure pump 12 arranged outside the detachable acid etching box 6 through the telescopic arm 10;

[0039] A spherical liquid channel 13 is provided in the middle of the rotary transition cabin 1, a ball valve 14 is movably installed in the spherical liquid channel 13, an etching liquid channel 15 connected to the telescopic sleeve 3 is provided on the rotary transition cabin 1 on the upper and lower sides of the spherical liquid channel 13, a rotating through hole 16 movably matched with the upper and lower etching liquid channels 15 is provided on the ball valve 14, and gear connecting rods 17 are fixedly installed on both sides of the ball valve 14, and the gear connecting rods 17 extend to the outside of the rotary transition cabin 1 through the sealing holes 18 provided on both sides of the rotary transition cabin 1, and the gear connecting rods 17 on both sides are movably meshed with the driving racks 19 respectively, and the driving racks 19 are fixedly installed on the outer sides of the upper and lower sealing telescopic tubes 5 respectively;

[0040] A coating platform 20 is provided for lifting below the rotating transition cabin 1, and a glass matching groove 21 is provided on the upper part of the coating platform 20. The upper and lower detachable acid etching boxes 6 are alternately matched with the coating platform 20 through the axial rotation of the rotating transition cabin 1, and the outer sides of the upper and lower detachable acid etching boxes 6 are also provided with cutting blades 22 that enter the glass matching groove 21.

[0041] In this embodiment, the rotating transition cabin 1 rotates by the rotation of the rotating shaft 2, and the rotating shaft 2 rotates under the drive of an external rotating motor. The rotation of the rotating transition cabin 1 drives the telescopic sleeve 3, the sealed telescopic tube 5 and the detachable acid etching box 6 connected thereto to rotate. The acid etching liquid flows downward under the action of gravity, so that the internal acid etching liquid can continuously contact the glass sheet 41 installed on the bottom of the detachable acid etching box 6, thereby etching it. During the acid etching process, the glass sheet 41 acts as a partition that seals the internal and external environments. The cooperation between the glass sheet 41 and the sealing rubber ring 8, combined with the upward extrusion of the coating platform 20, ensures the isolation of the internal and external environments of the detachable acid etching box 6. During the upward movement of the coating platform 20, the coating platform 20 squeezes the detachable acid etching box 6 so that the detachable acid etching box 6 together with the sealing telescopic tube 5 overcomes the elastic force of the telescopic spring 4 and is squeezed toward the telescopic sleeve 3. During the squeezing process, the driving rack 19 installed on the telescopic sleeve 3 is in contact and meshing with the gear connecting rod 17. At this time, the driving rack 19 moves to drive the gear connecting rod 17 to rotate, and the gear connecting rod 17 rotates to drive the ball valve 14 fixedly connected to it to rotate, thereby making the rotating through hole 16 and the acid etching liquid channel 15 connected together. At this time, the acid etching liquid at the upper part can enter the bottom through the rotating through hole 16. Through this arrangement, it can be ensured that the coating platform 20 at the bottom and the glass sheet 41 are fully squeezed. After that, the glass sheet 41 and the sealing rubber ring 8 fully cooperate with each other to prevent the acid etching liquid from leaking. At the same time, when the laminating platform 20 is squeezed upward, the negative pressure suction cup 11 of the electric hydraulic telescopic cylinder 9 is separated from the surface of the glass sheet 41. During the air outlet installation process of the glass sheet 41, due to the rotation and downward flipping of the rotating transition cabin 1, the negative pressure suction cup 11 is required to provide adsorption force for the glass sheet 41 to prevent the glass sheet 41 from falling. During the acid etching process, in order to prevent the negative pressure suction cup 11 from blocking the surface of the glass sheet 41, the negative pressure suction cup 11 is controlled to separate from the surface of the glass sheet 41. In this way, the acid etching surface can be completely etched. The micro negative pressure pump 12 is connected to the negative pressure suction cup 1 1 provides adsorption force, so that the glass sheet 41 is firmly adsorbed. An acid-resistant film 26 is provided on the coating platform 20. During the rising process of the coating platform 20, the acid-resistant film 26 contacts the protective surface of the glass sheet 41, so as to perform coating. During the coating process, the glass sheet 41 is larger than the thickness of the sealing groove 7 to ensure that the glass sheet 41 protrudes from the detachable acid etching box 6, so that the coating can be smoothly performed. The coating coil is cut by the cutting blade 22, so that the coated glass sheet 41 can be detached. After the coating and acid etching are completed, the negative pressure suction cup 11 of the electric hydraulic telescopic cylinder 9 contacts the glass sheet 41 again to adsorb it, so as to prevent the acid etching liquid from being pushed out of the detachable acid etching box 6 due to gravity.

[0042] Embodiment 2:

[0043] In this embodiment, a liquid collecting tank 23 is provided inside the coating platform 20, and the glass matching tank 21 is connected to the liquid collecting tank 23 through a liquid flow hole 24. The surface of the glass matching tank 21 is covered with an exhaust film 25 whose four corners are flush with the bottom of the glass matching tank 21 when in an expanded state and whose middle protrusions are flush with the bottom of the glass matching tank 21. Coil flow tanks 27 for the acid-resistant film 26 to pass through are also provided on both sides of the coating platform 20. Through the provision of the exhaust film 25, after the glass sheet 41 contacts the acid-resistant film 26, its central area contacts the acid-resistant film 26 first. As the coating platform 20 continues to rise, the acid-resistant film 26 is spread on the glass sheet 41 from the middle to the surrounding area, thereby effectively preventing the generation of bubbles during the coating process.

[0044] Embodiment three:

[0045] In this embodiment, a boosting groove 28 is further opened on one side of the liquid collecting groove 23, and a boosting piston 29 is movably installed in the boosting groove 28. The boosting piston 29 is connected to the inner side of the boosting groove 28 by a boosting spring 30 on the side away from the liquid collecting groove 23. When the coating table 20 is in contact with the glass sheet 41, the liquid that enters the glass matching groove 21 through the liquid flow hole 24 is squeezed by the glass sheet 41 and enters the liquid collecting groove 23 again. At this time, the internal pressure of the liquid collecting groove 23 increases, thereby pushing the boosting piston 29 to overcome the work of the boosting spring 30. When the glass sheet 41 is separated from the coating table 20, the boosting spring 30 pushes the boosting piston 29 to reset again, so that the exhaust film 25 continues to be in an expanded state.

[0046] Embodiment 4:

[0047] In this embodiment, the coating table 20 is located on both sides of the coil flow groove 27 and is also movably installed with an active roller 32 and a driven roller 33 through a bracket 31. The roller shaft of the active roller 32 is fixedly connected to the driving shaft of the winding motor 34. The active roller 32 is driven to rotate by the winding motor 34, thereby driving the coating waste installed on the active roller to be wound, and the continuous coating process is completed by winding.

[0048] Embodiment five:

[0049] In this embodiment, the rotating shaft 2 extends to the interior of the rotating transition cabin 1 and is connected to the spherical liquid channel 13. The ball valve 14 is provided with an etching liquid filling hole 35 in the radial direction of the rotating through hole 16. The etching liquid filling hole 35 is connected to the rotating through hole 16. A one-way valve 36 for one-way entry into the rotating through hole 16 is arranged in the etching liquid filling hole 35. A filling channel 37 is provided in the rotating shaft 2. A liquid inlet 38 connected to the filling channel 37 is also provided on the side of the rotating shaft 2. A filling ring 39 is movably sleeved on the outer side of the rotating shaft 2 where the liquid inlet 38 is located. The outer side of the filling ring 39 is connected to an external filling pump through a pipeline 40. Since a certain amount of the internal etching liquid will be consumed during the etching process, the etching liquid is regularly added to the filling ring 39 through the pipeline 40. The etching liquid enters the etching liquid filling hole 35 through the filling channel 37, and enters the interior as the etching liquid filling hole 35 is connected to the rotating through hole 16, thereby completing the continuous replenishment of the etching liquid.

[0050] A method for acid-etching the front side of glass and coating the back side with an acid-resistant film, using the above-mentioned equipment for acid-etching the front side of glass and coating the back side with an acid-resistant film, comprises the following steps:

[0051] Step 1: The detachable acid etching box 6 is kept fixed in the upper and lower positions by rotating the rotating shaft 2, and the glass sheet 41 to be etched and coated is installed in the upper detachable acid etching box 6, and the electric hydraulic telescopic cylinder 9 on the same side is used to move toward the side of the glass sheet 41, so that the negative pressure suction cup 11 is attached to the surface of the glass sheet, and the glass sheet 41 is adsorbed by the micro negative pressure pump 12 provided in the electric hydraulic telescopic cylinder 9, and the rotating shaft 2 is driven by the motor to rotate 180 degrees so that the detachable acid etching box 6 on the side where the glass sheet 41 is installed is at the lowest position;

[0052] Step 2: Add the etching liquid into the upper detachable etching box 6, and install the glass sheet 41 to be etched and coated in the detachable etching box 6 in the same manner as in step 1;

[0053] Step 3: The coating platform 20 is operated to rise by the lifting mechanism, so that the coating platform 20 cooperates with the detachable acid etching box 6 below, and continues to push the detachable acid etching box 6 and the sealing telescopic tube 5 to rise. The rising of the sealing telescopic tube 5 causes the driving rack 19 to move upward until it is meshed with the gear connecting rod 17, and then the gear connecting rod 17 is pushed to rotate. The rotation of the gear connecting rod 17 drives the ball valve 14 to rotate 90° so that the rotating through hole 16 is connected with the upper and lower acid etching liquid channels 15. At this time, the acid etching liquid filled from the upper part can fall into the detachable acid etching box 6 at the bottom, so that the acid etching liquid contacts the inner side of the glass sheet 41 installed at the bottom, thereby completing the acid etching operation. Under the upward squeezing of the coating platform 20, the glass sheet 41 seals the internal and external environment of the detachable acid etching box 6. At this time, the electric hydraulic telescopic cylinder 9 can be separated from the adsorption of the glass sheet 41, ensuring that all positions of the glass sheet 41 are evenly etched.

[0054] Step 4: During the rising process of the coating platform 20, the cutting blade 22 is used to cut the acid-resistant film 26, and is acted upon by the exhaust film 25 whose four corners of the middle protrusion are flush with the bottom of the glass matching groove 21, thereby ensuring that the acid-resistant film 26 is adsorbed from the middle to the surroundings of the glass sheet 41, effectively preventing bubbles from being generated during the coating process. After the coating and acid etching are completed, the lifting mechanism operates the coating platform 20 to descend and separate from the detachable acid etching box 6, and at this time, the rotating shaft 2 rotates 180°;

[0055] Step 5: The acid-etched and coated glass sheet 41 is transferred to the top. At this time, the electric hydraulic telescopic cylinder 9 is raised to eject the glass sheet 41, and step 1 is repeated to install a new glass sheet 41 to be processed. The cycle is repeated to achieve continuous coating and acid etching of the glass sheet 41.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glass front acid etching and back acid resistant film coating equipment, comprising a rotating transition chamber (1), characterized in that: The rotating transition chamber (1) performs axial rotation around a rotating shaft (2) installed at its axis. A pair of centrally symmetrical telescopic sleeves (3) are provided on the upper and lower sides of the rotating transition chamber (1). A sealed telescopic tube (5) is movably inserted into the telescopic sleeves (3) on both sides through a telescopic spring (4). The ends of the sealed telescopic tubes (5) on both sides away from the telescopic sleeves (3) are fixedly connected to a detachable acid etching box (6). A sealing groove (7) is provided at the edge of the detachable acid etching box (6). A sealing rubber ring (8) is installed in the sealing groove (7). A pair of electric hydraulic telescopic cylinders (9) are also fixedly installed on the detachable acid etching boxes (6) on both sides. A negative pressure suction cup (11) is also fixedly installed on the telescopic arm (10) of the electric hydraulic telescopic cylinder (9). The negative pressure suction cup (11) is connected to the air inlet and outlet of a micro negative pressure pump (12) arranged outside the detachable acid etching box (6) through the telescopic arm (10). A spherical liquid passage (13) is provided in the middle of the rotary transition chamber (1), a ball valve (14) is movably installed in the spherical liquid passage (13), an etching liquid passage (15) communicating with the telescopic sleeve (3) is provided on the rotary transition chamber (1) at the upper and lower sides of the spherical liquid passage (13), a rotating through hole (16) movably matched with the upper and lower etching liquid passages (15) is provided on the ball valve (14), gear connecting rods (17) are fixedly installed on both sides of the ball valve (14), the gear connecting rods (17) extend to the outside of the rotary transition chamber (1) through sealing holes (18) provided on both sides of the rotary transition chamber (1), the gear connecting rods (17) on both sides are movably meshed with driving racks (19), and the driving racks (19) are fixedly installed on the outer sides of the upper and lower sealing telescopic tubes (5) respectively; A coating platform (20) is provided below the rotating transition chamber (1) for lifting, and a glass matching groove (21) is provided on the top of the coating platform (20). The upper and lower detachable acid etching boxes (6) are alternately movably matched with the coating platform (20) through the axial rotation of the rotating transition chamber (1), and cutting blades (22) are also provided on the outer sides of the upper and lower detachable acid etching boxes (6) for entering the interior of the glass matching groove (21).

2. The glass front side acid etching and back side acid-resistant film coating equipment according to claim 1, characterized in that: A liquid collecting tank (23) is provided inside the coating platform (20), and the glass matching tank (21) is connected to the liquid collecting tank (23) through a liquid flow hole (24). The surface of the glass matching tank (21) is covered with an exhaust film (25) whose four corners are flush with the bottom of the glass matching tank (21) when in an expanded state. The coating platform (20) also has coil flow tanks (27) on both sides for the acid-resistant film (26) to pass through.

3. The glass front side acid etching and back side acid-resistant film coating equipment according to claim 2, characterized in that: A boosting groove (28) is also provided on one side of the liquid collecting groove (23), and a boosting piston (29) is movably installed in the boosting groove (28). The boosting piston (29) is connected to the inner side of the boosting groove (28) via a boosting spring (30) on the side away from the liquid collecting groove (23).

4. The glass front side acid etching and back side acid resistant film coating equipment according to claim 3, characterized in that: The coating platform (20) is located on both sides of the coil flow groove (27) and is also movably mounted with an active roller (32) and a driven roller (33) through a bracket (31), and the roller shaft of the active roller (32) is fixedly connected to the driving shaft of the winding motor (34).

5. The glass front side acid etching and back side acid resistant film coating equipment according to claim 1, characterized in that: The rotating shaft (2) extends to the interior of the rotating transition chamber (1) and is connected to the spherical liquid channel (13). The ball valve (14) is provided with an etching liquid filling hole (35) in the radial direction of the rotating through hole (16). The etching liquid filling hole (35) is connected to the rotating through hole (16). A one-way valve (36) for one-way entry into the rotating through hole (16) is arranged in the etching liquid filling hole (35). A filling channel (37) is provided inside the rotating shaft (2). A liquid inlet hole (38) connected to the filling channel (37) is also provided on the side of the rotating shaft (2). A filling ring (39) is also movably sleeved on the outer side of the rotating shaft (2) where the liquid inlet hole (38) is located. The outer side of the filling ring (39) is connected to an external filling pump through a pipeline (40).

6. A method for acid etching the front side of glass and coating the back side with an acid-resistant film, using the device for acid etching the front side of glass and coating the back side with an acid-resistant film as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: The removable acid etching box (6) is kept fixed in the upper and lower positions by rotating the rotating shaft (2), and the glass sheet (41) to be etched and coated is installed in the upper removable acid etching box (6), and the electric hydraulic telescopic cylinder (9) on the same side is used to move toward the side of the glass sheet (41), so that the negative pressure suction cup (11) is attached to the surface of the glass sheet, and the glass sheet (41) is adsorbed by the micro negative pressure pump (12) provided in the electric hydraulic telescopic cylinder (9), and the rotating shaft (2) is driven by the motor to rotate 180 degrees so that the removable acid etching box (6) on the side where the glass sheet (41) is installed is at the lowest position; Step 2: Adding etching liquid into the upper detachable etching box (6), and installing the glass sheet (41) to be etched and coated in the detachable etching box (6) in the same manner as in step 1; Step 3: The coating platform (20) is raised by the lifting mechanism, so that the coating platform (20) cooperates with the detachable acid etching box (6) below, and continues to push the detachable acid etching box (6) and the sealing telescopic tube (5) to rise. The sealing telescopic tube (5) rises so that the driving rack (19) moves upward until it meshes with the gear connecting rod (17), and then pushes the gear connecting rod (17) to rotate. The rotation of the gear connecting rod (17) drives the ball valve (14) to rotate 90 degrees, so that the rotating through hole (16) is aligned with the upper The lower acid etching liquid channel (15) is connected, and the acid etching liquid filled in the upper part can fall into the detachable acid etching box (6) at the bottom, so that the acid etching liquid contacts the inner side of the glass sheet (41) installed at the bottom, thereby completing the acid etching operation. Under the upward pressure of the coating platform (20), the glass sheet (41) seals the internal and external environment of the detachable acid etching box (6). At this time, the electric hydraulic telescopic cylinder (9) can be separated from the adsorption of the glass sheet (41), ensuring that all positions of the glass sheet (41) are evenly etched; Step 4: During the rising process of the coating platform (20), the cutting blade (22) is used to cut the acid-resistant film (26), and is affected by the exhaust film (25) whose four corners of the middle protrusion are flush with the bottom of the glass matching groove (21), thereby ensuring that the acid-resistant film (26) is adsorbed from the middle to the surroundings of the glass sheet (41), effectively preventing the generation of bubbles during the coating process. After the coating and acid etching are completed, the lifting mechanism operates the coating platform (20) to descend and separate from the detachable acid etching box (6), and at this time, the rotating shaft (2) rotates 180 degrees; Step 5: The glass sheet (41) that has been acid-etched and coated is transferred to the top. At this time, the electric hydraulic telescopic cylinder (9) is raised to eject the glass sheet (41). Step 1 is repeated to install a new glass sheet (41) to be processed. The cycle is repeated to achieve continuous coating and acid etching of the glass sheet (41).

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