An automated metallurgical etching device

Abstract

The present invention relates to the technical field of metal etching equipment, specifically to an automated metallurgical etching equipment, including a shell, a conveyor belt is arranged inside the shell, a coating mechanism is fixedly installed on the inner wall of the top plate of the shell, the coating mechanism includes a liquid storage tank and a fixed shaft, the fixed shaft is horizontally slidably inserted between the two side plates of the shell, a first spring is fixedly installed around the fixed shaft, a rotating ring is fixedly connected to the outer side of the first spring, a coating cylinder is rotatably sleeved on the outer side of the rotating ring, and two connecting frames are symmetrically fixedly installed on the fixed shaft. By using the coating mechanism, the present invention can coat the metal plate with photosensitive liquid when the metal plate passes through the coating cylinder, and by squeezing the airbag, the coating cylinder can be replenished with photosensitive liquid, so that the photosensitive liquid coating of the metal plate is more continuous, and in combination with the coating cylinders divided into several groups, the amount of photosensitive liquid used can be effectively saved.

Description

Technical Field

[0001] The invention relates to the technical field of metal etching equipment, in particular to automated metallurgical etching equipment. Background Art

[0002] Etching was first used to make copper plates, zinc plates and other printing embossed plates. It is also widely used to reduce the weight of instrument panels, nameplates and thin workpieces that are difficult to process using traditional methods. After continuous improvements and development of process equipment, it can also be used for the processing of precision etching products of electronic thin-film parts in the aviation, machinery and chemical industries. In particular, etching is an indispensable technology in semiconductor manufacturing.

[0003] The prior art has the following defects: when applying photosensitive liquid to the metal plate, the prior art cannot achieve continuous application, and it is often necessary to manually add photosensitive liquid or start the machine to replenish the photosensitive liquid. The operation is cumbersome, and it is easy to forget to replenish the photosensitive liquid, resulting in poor effect of photosensitive liquid application.

[0004] To this end, an automated metallurgical etching device is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an automated metallurgical etching equipment. By using a coating mechanism, the metal plate can be coated with photosensitive liquid when the metal plate passes through the coating cylinder, and the photosensitive liquid can be replenished on the coating cylinder by squeezing the air bag, so that the photosensitive liquid coating of the metal plate is more continuous. In addition, when combined with the coating cylinders divided into several groups, the amount of photosensitive liquid used can be effectively saved to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automated metallurgical etching device comprises a housing, a conveyor belt is arranged inside the housing, and a coating mechanism is fixedly installed on the inner wall of the top plate of the housing;

[0008] The smearing mechanism includes a liquid storage tank and a fixed shaft, the fixed shaft is horizontally slidably inserted between the two side plates of the shell, a first spring is fixedly installed around the fixed shaft, a rotating ring is fixedly connected to the outer side of the first spring, and a smearing cylinder is rotatably sleeved on the outer side of the rotating ring, two connecting frames are symmetrically fixedly installed on the fixed shaft, a connecting pipe is fixedly installed between the two connecting frames, the liquid storage tank is fixedly installed on the top surface of the shell, a liquid outlet pipe is installed through one side of the liquid storage tank, the liquid outlet pipe extends into the shell and is sleeved with a bellows, the bottom end of the liquid outlet pipe is communicated with the connecting pipe, an air bag is fixedly installed below the connecting pipe, the air bag is located directly above the smearing cylinder, a liquid spray port and an air intake port are arranged on the air bag, a one-way valve is arranged in the air intake port, and the liquid spray port faces the smearing cylinder.

[0009] When in use, the metal plate is placed on the conveyor belt, and the conveyor belt conveys the metal plate into the shell. When the metal plate contacts the coating cylinder, it is squeezed against the coating cylinder, causing the coating cylinder to be squeezed against the air bag above. The air bag is squeezed, and the photosensitive liquid in the air bag drips onto the coating cylinder through the spray port, and the negative pressure in the air bag is replenished through the suction port. In this way, the surface of the metal plate can be coated with photosensitive liquid while the metal plate moves, and as the metal plate squeezes the coating cylinder, the coating cylinder can be replenished with photosensitive liquid. In this way, the metal plate can be automatically and continuously coated with photosensitive liquid, which increases the convenience of the device.

[0010] Preferably, the coating cylinder, the rotating ring, the first spring and the fixed shaft are all grouped together, and the position and quantity of the airbags correspond one-to-one to the coating cylinder.

[0011] Since the sizes of metal plates in the assembly line are not the same, when metal plates of different widths pass through the coating cylinders, the metal plates can only be squeezed into a specific number of coating cylinders, and this specific number is determined by the size of the metal plates, which can better save the use of photosensitive liquid.

[0012] Preferably, a smoothing mechanism is fixedly installed on one side of the connecting tube, and the smoothing mechanism includes a diamond-shaped slider. A corrugated groove is provided on the surface of the smearing cylinder. A connecting plate is fixedly installed on one side of the connecting tube, and a fixing rod is fixedly installed on the bottom end of the connecting plate. The diamond-shaped slider is fixedly connected to the bottom end of the fixing rod, and the diamond-shaped slider is slidably connected in the corrugated groove. A sponge block is fixedly connected to the diamond-shaped slider, and the sponge block is in contact with the surface of the smearing cylinder.

[0013] After the photosensitive liquid drops onto the surface of the coating cylinder, as the coating cylinder rotates, the diamond slider moves left and right in the corrugated groove, driving the sponge block on the diamond slider to continuously rub the surface of the coating cylinder, and continuously spread the photosensitive liquid on the surface of the coating cylinder. This makes the photosensitive liquid applied to the metal plate better and more evenly, effectively ensuring the coating effect of the photosensitive liquid on the metal plate.

[0014] Preferably, a correction mechanism is provided on the two side plates of the shell, and the correction mechanism includes a first electric push rod, which is symmetrically embedded in the two side plates of the shell, and a push plate is fixedly installed on the output end of the first electric push rod. A trigger mechanism is also provided on the two side plates of the shell, and a first slot is opened on the two side plates of the shell, and an elastic contact and a fixed contact are fixedly installed in the first slot, and the elastic contact and the fixed contact are both electrically connected to the first electric push rod.

[0015] The metal plate on the conveyor belt may be in a tilted state. When the tilted metal plate moves to the trigger mechanism, the trigger mechanism squeezes the elastic contact and the fixed contact together, so that the first electric push rod is powered on and started. The two first electric push rods are started together to clamp the metal plate to correct its position and direction. In this way, when passing through the coating cylinder, the corner of the metal plate will not trigger the coating cylinder, causing the photosensitive liquid to drip on the coating cylinder, which can effectively save the photosensitive liquid.

[0016] Preferably, the trigger mechanism includes a connecting rod, which is slidably inserted in a first slot, a second spring is fixedly connected between the bottom end of the connecting rod and the first slot, the bottom end of the first slot is in contact with an elastic contact, the top end of the connecting rod is fixedly connected to a telescopic threaded rod, the top of the telescopic threaded rod is fixedly connected to a rotating connecting block, and a rotating wheel is rotatably connected to the rotating connecting block via a rotating shaft.

[0017] When setting the trigger mechanism, use a telescopic threaded rod to set the distance between the trigger mechanisms to the width of the metal plate, so that the trigger mechanism can fit the elastic contact and the fixed contact before the metal plate is squeezed by the first electric push rod until it is completely aligned, so that the metal plate can be perfectly aligned.

[0018] Preferably, the telescopic threaded rod comprises a bolt and a stud, the bolt is fixedly connected to the connecting rod, the stud is fixedly connected to the bottom surface of the rotating connecting block, the stud thread is movably inserted on the bolt, and the thread directions of the bolt and the stud are opposite.

[0019] When the bolt is screwed out in the right direction, it is screwed in the left direction relative to the stud, so that the stud is also screwed out relative to the bolt. This telescopic method can extend a longer length when the initial length is short, reducing the influence of the width of the conveyor belt on the trigger mechanism.

[0020] Preferably, a connecting cylinder is slidably inserted into the two side plates of the shell, the first electric push rod is fixedly connected in the connecting cylinder, and limiting grooves are evenly arranged on both sides of the connecting cylinder. The two side plates of the shell are symmetrically provided with second slots at the connection of the first electric push rod, and the second electric push rod is fixedly connected in the second slot, one end of the second electric push rod is fixedly connected to a limiting block, and the limiting block is movably inserted in the limiting slot.

[0021] In order to save space above the conveyor belt and ensure that all the coating cylinders can be used normally, the initial state of the first electric push rod is to be completely retracted into the connecting cylinder. When encountering a metal plate with a narrow width, the first electric push rod can be pulled out of the limit groove to increase the stroke of the first electric push rod, thereby effectively improving the convenience of the device.

[0022] Preferably, a mold replacement mechanism is also provided in the shell, and the mold replacement mechanism includes a mold bottom plate, on which a mold top plate is slidably inserted, and suction cups are fixedly installed at the four corners of the top surface of the mold top plate, and two connecting shafts are fixedly connected to both sides of the mold bottom plate, and the two connecting shafts are fixedly connected to the fixed shaft through a connecting frame.

[0023] During use, the user can adsorb a specific mold on the mold top plate through the suction cup. After the metal plate is coated with photosensitive liquid, the ultraviolet lamp passes through the mold installed on the mold top plate and irradiates the metal plate to react to the photosensitive liquid on the metal plate. The mold bottom plate and the mold top plate are connected between the connecting shaft and the fixed shaft, and can be raised and lowered simultaneously with the coating cylinder. This can adapt to different metal plate thicknesses and ensure the irradiation effect of the ultraviolet lamp.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention uses a coating mechanism to coat the metal plate with photosensitive liquid when the metal plate passes through the coating cylinder, and by squeezing the air bag, the photosensitive liquid can be replenished on the coating cylinder, so that the photosensitive liquid coating of the metal plate is more continuous, and in combination with the coating cylinders divided into several groups, the amount of photosensitive liquid used can be effectively saved.

[0026] 2. The present invention uses a smoothing mechanism to evenly smooth the photosensitive liquid on the coating cylinder after the photosensitive liquid drips onto the coating cylinder, thereby improving the coating effect on the metal plate and making the photosensitive liquid on the surface of the coating cylinder more uniform when the metal plate is coated.

[0027] 3. The present invention uses the cooperation between the first electric push rod and the trigger mechanism, and the trigger mechanism squeezes the elastic contact and the fixed contact together, so that the first electric push rod is electrically started, and the two first electric push rods are started together to clamp the metal plate so that its position and direction are correct. In this way, when passing through the coating cylinder, the corner of the metal plate will not trigger the coating cylinder and cause the photosensitive liquid to drip on the coating cylinder, which can effectively save the photosensitive liquid and is beneficial to the next step of ultraviolet lamp irradiation of the metal plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view of the present invention;

[0029] Figure 2 It is a left sectional view of the present invention;

[0030] Figure 3 is a top cross-sectional view of the present invention;

[0031] Figure 4 It is a schematic diagram of the connection between the smearing cylinder and the smearing mechanism of the present invention;

[0032] Figure 5 It is a schematic diagram of the smoothing mechanism of the present invention;

[0033] Figure 6 It is a schematic diagram of the mold bottom plate and the mold top plate of the present invention;

[0034] Figure 7 For the present invention Figure 1 Enlarged view of point A in the middle;

[0035] Figure 8 For the present invention Figure 3 Enlarged view of point B in the middle;

[0036] Fig. 9 For the present invention Figure 3 Enlarged view of center C.

[0037] In the figure: 1, housing; 2, conveyor belt; 3, liquid storage tank; 4, liquid outlet pipe; 5, bellows; 6, fixed shaft; 7, first spring; 8, rotating ring; 9, smear cylinder; 10, connecting frame; 11, air bag; 12, liquid spray port; 13, air suction port; 14, connecting pipe; 15, corrugated groove; 16, connecting plate; 17, fixed rod; 18, diamond slider; 19, sponge block; 20, first slot; 21, connecting rod; 22, second spring; 23 , telescopic threaded rod; 2301, bolt; 2302, stud; 24, rotating connecting block; 25, rotating wheel; 26, elastic contact; 27, fixed contact; 28, first electric push rod; 29, push plate; 30, connecting tube; 31, limiting groove; 32, second slot; 33, limiting block; 34, ultraviolet lamp; 35, mold bottom plate; 36, mold top plate; 37, suction cup; 38, connecting shaft; 39, second electric push rod; 40, third spring. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figures 1 to 9 The present invention provides an automated metallurgical etching device, and the technical solution is as follows:

[0040] An automated metallurgical etching device comprises a housing 1, a conveyor belt 2 is arranged inside the housing 1, and a coating mechanism is fixedly installed on the inner wall of the top plate of the housing 1;

[0041] The smearing mechanism includes a liquid storage tank 3 and a fixed shaft 6, which is horizontally slidably inserted between the two side plates of the shell 1. A first spring 7 is fixedly installed around the fixed shaft 6, and a rotating ring 8 is fixedly connected to the outer side of the first spring 7. A smearing cylinder 9 is rotatably sleeved on the outer side of the rotating ring 8. Two mounting frames 10 are symmetrically fixedly installed on the fixed shaft 6, and a connecting pipe 14 is fixedly installed between the two mounting frames 10. The liquid storage tank 3 is fixedly installed on the top surface of the shell 1, and a liquid outlet pipe 4 is installed through one side of the liquid storage tank 3. The liquid outlet pipe 4 extends into the shell 1 and is sleeved with a bellows 5. The bottom end of the liquid outlet pipe 4 is connected to the connecting pipe 14, and an air bag 11 is fixedly installed below the connecting pipe 14. The air bag 11 is located directly above the smearing cylinder 9. A liquid spray port 12 and an air intake port 13 are provided on the air bag 11. A one-way valve is provided in the air intake port 13, and the liquid spray port 12 faces the smearing cylinder 9.

[0042] When in use, the metal plate is placed on the conveyor belt 2, and the conveyor belt 2 conveys the metal plate into the shell 1. When the metal plate contacts the coating cylinder 9, it is squeezed onto the coating cylinder 9, so that the coating cylinder 9 is squeezed onto the air bag 11 above. The air bag 11 is squeezed, and the photosensitive liquid in the air bag 11 drips onto the coating cylinder 9 through the spray port 12, and the negative pressure in the air bag 11 is replenished through the air intake port 13, and the one-way valve in the air intake port 13 can prevent the photosensitive liquid from flowing out. In this way, the surface of the metal plate can be coated with photosensitive liquid while the metal plate moves, and as the metal plate squeezes the coating cylinder 9, the coating cylinder 9 can be replenished with photosensitive liquid, so that the metal plate can be automatically and continuously coated with photosensitive liquid, which increases the convenience of the device. The coating cylinder 9 is rotatably connected to the rotating ring 8, and the spring 7 is interconnected with the rotating ring 8, so the coating cylinder 9 will not generate torque between the spring 7 during the process of rotation generated by contact with the metal plate.

[0043] As an embodiment of the present invention, refer to Figure 2 The coating cylinder 9, the rotating ring 8, the first spring 7 and the fixed shaft 6 are all grouped together, and the position and quantity of the airbags 11 correspond one to one with the coating cylinder 9.

[0044] Since the sizes of metal plates in the assembly line are different, when metal plates of different widths pass through the coating cylinder 9, the metal plates can only be squeezed into a specific number of coating cylinders 9, and this specific number is determined by the size of the metal plates, which can better save the use of photosensitive liquid.

[0045] As an embodiment of the present invention, refer to Figure 2 , Figure 4 and Figure 5 A smoothing mechanism is fixedly installed on one side of the connecting tube 14, and the smoothing mechanism includes a diamond slider 18. A corrugated groove 15 is opened on the surface of the smear cylinder 9. A connecting plate 16 is fixedly installed on one side of the connecting tube 14. A fixed rod 17 is fixedly installed on the bottom end of the connecting plate 16, and the fixed rod 17 is an elastic rod made of rubber. The diamond slider 18 is fixedly connected to the bottom end of the fixed rod 17, and the diamond slider 18 is slidably connected in the corrugated groove 15. A sponge block 19 is fixedly connected to the diamond slider 18, and the sponge block 19 contacts the surface of the smear cylinder 9.

[0046] After the photosensitive liquid drops onto the surface of the coating cylinder 9, as the coating cylinder 9 rotates, the diamond slider 18 moves left and right in the corrugated groove 15, driving the sponge block 19 on the diamond slider 18 to continuously rub the surface of the coating cylinder 9, and continuously spread the photosensitive liquid on the surface of the coating cylinder 9. This makes the photosensitive liquid applied to the metal plate better and more uniform, and effectively ensures the coating effect of the photosensitive liquid on the metal plate. Since the fixed rod 17 is an elastic rod made of rubber, when the diamond slider 18 slides in the corrugated groove 15, it will be deformed under the action of its own elasticity and move along the contour of the corrugated groove 15.

[0047] As an embodiment of the present invention, refer to Figure 2 A correction mechanism is provided on the two side plates of the shell 1, and the correction mechanism includes a first electric push rod 28, which is symmetrically embedded in the two side plates of the shell 1, and a push plate 29 is fixedly installed on the output end of the first electric push rod 28. A trigger mechanism is also provided on the two side plates of the shell 1. First slots 20 are opened on the two side plates of the shell 1, and elastic contacts 26 and fixed contacts 27 are fixedly installed in the first slots 20. The elastic contacts 26 and the fixed contacts 27 are both electrically connected to the first electric push rod 28.

[0048] The metal plate on the conveyor belt 2 may be in a tilted state. When the tilted metal plate moves to the trigger mechanism, the trigger mechanism squeezes the elastic contact 26 and the fixed contact 27 together, so that the first electric push rod 28 is powered on and started. The two first electric push rods 28 are started together to clamp the metal plate to correct its position and direction. In this way, when passing through the coating cylinder 9, the corner of the metal plate will not trigger the coating cylinder 9, causing the photosensitive liquid to drip on the coating cylinder 9, which can effectively save the photosensitive liquid.

[0049] As an embodiment of the present invention, refer to Figure 2 and Figure 8 The trigger mechanism includes a connecting rod 21, which is slidably inserted in the first slot 20, a second spring 22 is fixedly connected between the bottom end of the connecting rod 21 and the first slot 20, the bottom end of the first slot 20 contacts the elastic contact 26, the top of the connecting rod 21 is fixedly connected to a telescopic threaded rod 23, the top of the telescopic threaded rod 23 is fixedly connected to a rotating connecting block 24, and a rotating wheel 25 is rotatably connected to the rotating connecting block 24 through a rotating shaft.

[0050] When setting the trigger mechanism, use the telescopic threaded rod 23 to set the distance between the trigger mechanisms to the width of the metal plate, so that the trigger mechanism can fit the elastic contact 26 and the fixed contact 27 before the metal plate is squeezed by the first electric push rod 28 until it is completely aligned, so that the metal plate can be perfectly aligned.

[0051] As an embodiment of the present invention, refer to Figure 8 The telescopic threaded rod 23 includes a bolt 2301 and a stud 2302. The bolt 2301 is threaded and movably inserted into the connecting rod 21. The stud 2302 is fixedly connected to the bottom surface of the rotating connecting block 24. The stud 2302 is threaded and movably inserted into the bolt 2301. The thread directions of the bolt 2301 and the stud 2302 are opposite.

[0052] When the bolt 2301 is screwed out in a clockwise direction, the bolt 2301 is counterclockwise relative to the stud 2302, so that the stud 2302 is also screwed out relative to the bolt 2301. This telescopic method can extend a longer length when the initial length is shorter, reducing the influence of the width of the conveyor belt 2 on the trigger mechanism.

[0053] As an embodiment of the present invention, refer to Figure 2 and Fig. 9 A connecting tube 30 is slidably inserted into the two side plates of the shell 1, the first electric push rod 28 is fixedly connected in the connecting tube 30, and limiting grooves 31 are evenly arranged on both sides of the connecting tube 30. The two side plates of the shell 1 are symmetrically provided with second slots 32 at the connection of the first electric push rod 28, and a second electric push rod 39 is fixedly connected in the second slot 32. One end of the second electric push rod 39 is fixedly connected to a limiting block 33, and the limiting block 33 is movably inserted in the limiting slot 31.

[0054] In order to save space above the conveyor belt 2 and ensure that all the coating cylinders 9 can be used normally, the initial state of the first electric push rod 28 is to be completely retracted into the connecting tube 30. When encountering a metal plate of a narrow width, the first electric push rod 28 can be pulled out of the limiting groove 31 to increase the stroke of the first electric push rod 28, thereby effectively improving the convenience of the device.

[0055] As an embodiment of the present invention, refer to Figure 2 and Figure 6 A mold replacement mechanism is also provided in the shell 1, and the mold replacement mechanism includes a mold bottom plate 35, on which a mold top plate 36 is slidably inserted, and suction cups 37 are fixedly installed at the four corners of the top surface of the mold top plate 36. Two connecting shafts 38 are fixedly connected to both sides of the mold bottom plate 35, and the two connecting shafts 38 are fixedly connected to the fixed shaft 6 through a connecting frame.

[0056] During use, the user can adsorb a specific mold on the mold top plate 36 through the suction cup 37. After the metal plate is coated with photosensitive liquid, the ultraviolet lamp 34 passes through the mold installed on the mold top plate 36 and irradiates the metal plate to react to the photosensitive liquid on the metal plate. The mold bottom plate 35 and the mold top plate 36 are connected through the connecting shaft 38 and the fixed shaft 6. The mold bottom plate 35, the mold top plate 3 and the coating cylinder 9 can be raised and lowered at the same time by controlling the second electric push rod 39. This can adapt to different metal plate thicknesses and ensure the irradiation effect of the ultraviolet lamp 34.

[0057] Working principle: When in use, place the metal plate on the conveyor belt 2, and the conveyor belt 2 conveys the metal plate to the shell 1. When the metal plate contacts the coating cylinder 9, it is squeezed onto the coating cylinder 9, causing the coating cylinder 9 to be squeezed onto the air bag 11 above. The air bag 11 is squeezed, and the photosensitive liquid in the air bag 11 drips onto the coating cylinder 9 through the liquid spray port 12, and the negative pressure in the air bag 11 is replenished through the air suction port 13. In this way, the surface of the metal plate can be coated with photosensitive liquid while the metal plate moves, and as the metal plate squeezes the coating cylinder 9, the coating cylinder 9 can be replenished with photosensitive liquid, so that the metal plate can be automatically and continuously coated with photosensitive liquid, which increases the convenience of the device.

[0058] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0059] 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. An automated metallurgical etching device, comprising a housing (1), wherein a conveyor belt (2) is arranged inside the housing (1), characterized in that: A coating mechanism is fixedly mounted on the inner wall of the top plate of the shell (1); the coating mechanism comprises a liquid storage tank (3) and a fixed shaft (6); the fixed shaft (6) is horizontally slidably inserted between the two side plates of the shell (1); a first spring (7) is fixedly mounted around the fixed shaft (6); a rotating ring (8) is fixedly connected to the outer side of the first spring (7); a coating cylinder (9) is rotatably sleeved on the outer side of the rotating ring (8); two mounting frames (10) are symmetrically fixedly mounted on the fixed shaft (6); a connecting pipe (14) is fixedly mounted between the two mounting frames (10); the liquid storage tank (3) is fixedly mounted on the top surface of the shell (1), a liquid outlet pipe (4) is installed through one side of the liquid storage tank (3), the liquid outlet pipe (4) extends into the shell (1) and is sleeved with a bellows (5), the bottom end of the liquid outlet pipe (4) is communicated with a connecting pipe (14), an air bag (11) is fixedly mounted below the connecting pipe (14), the air bag (11) is located directly above the smear cylinder (9), a liquid spray port (12) and an air suction port (13) are arranged on the air bag (11), a one-way valve is arranged in the air suction port (13), and the liquid spray port (12) faces the smear cylinder (9); The coating cylinder (9), the rotating ring (8), the first spring (7) and the fixed shaft (6) are all grouped together, and the position and number of the airbags (11) correspond to the coating cylinder (9) one by one; when the metal plate contacts the coating cylinder (9), it presses the coating cylinder (9), so that the coating cylinder (9) presses the airbag (11) above, and the airbag (11) is squeezed, so that the photosensitive liquid in the airbag (11) drips onto the coating cylinder through the liquid spraying port (12), and the negative pressure in the airbag is supplemented through the air suction port (13); The two side plates of the shell (1) are provided with a deviation correction mechanism, the deviation correction mechanism comprising a first electric push rod (28), the first electric push rod (28) is symmetrically embedded in the two side plates of the shell (1), a push plate (29) is fixedly installed on the output end of the first electric push rod (28), and a trigger mechanism is also provided on the two side plates of the shell (1), and the two side plates of the shell (1) are each provided with a first slot (20), and an elastic contact (26) and a fixed contact (27) are fixedly installed in the first slot (20), and the elastic contact (26) and the fixed contact (27) are both electrically connected to the first electric push rod (28); The trigger mechanism comprises a connecting rod (21), the connecting rod (21) is slidably inserted in a first slot (20), a second spring (22) is fixedly connected between the bottom end of the connecting rod (21) and the first slot (20), the bottom end of the first slot (20) contacts an elastic contact (26), the top end of the connecting rod (21) is fixedly connected to a telescopic threaded rod (23), the top of the telescopic threaded rod (23) is fixedly connected to a rotating connection block (24), and a rotating wheel (25) is rotatably connected to the rotating connection block (24) via a rotating shaft.

2. An automated metallurgical etching device according to claim 1, characterized in that: A smoothing mechanism is fixedly installed on one side of the connecting tube (14), and the smoothing mechanism includes a diamond-shaped slider (18). A corrugated groove (15) is provided on the surface of the smearing cylinder (9). A connecting plate (16) is fixedly installed on one side of the connecting tube (14). A fixing rod (17) is fixedly installed on the bottom end of the connecting plate (16). The diamond-shaped slider (18) is fixedly connected to the bottom end of the fixing rod (17). The diamond-shaped slider (18) is slidably connected in the corrugated groove (15). A sponge block (19) is fixedly connected to the diamond-shaped slider (18), and the sponge block (19) contacts the surface of the smearing cylinder (9).

3. The automated metallurgical etching equipment according to claim 1, characterized in that: The telescopic threaded rod (23) comprises a bolt (2301) and a stud (2302); the bolt (2301) is threadedly movably inserted into the connecting rod (21); the stud (2302) is fixedly connected to the bottom surface of the rotating connecting block (24); the stud (2302) is threadedly movably inserted into the bolt (2301); and the thread directions of the bolt (2301) and the stud (2302) are opposite.

4. The automated metallurgical etching equipment according to claim 1, characterized in that: A connecting tube (30) is slidably inserted into the two side plates of the housing (1), the first electric push rod (28) is fixedly connected in the connecting tube (30), and limiting grooves (31) are evenly provided on both sides of the connecting tube (30). Second slots (32) are symmetrically provided at the connection points of the two side plates of the housing (1) at the first electric push rod (28), a second electric push rod (39) is fixedly connected in the second slot (32), one end of the electric push rod (39) is fixedly connected to a limiting block (33), and the limiting block (33) is movably inserted in the limiting groove (31).

5. The automated metallurgical etching equipment according to claim 1, characterized in that: A mold replacement mechanism is also provided in the housing (1), and the mold replacement mechanism comprises a mold bottom plate (35), a mold top plate (36) is slidably inserted on the mold bottom plate (35), suction cups (37) are fixedly installed at the four corners of the top surface of the mold top plate (36), and two connecting shafts (38) are fixedly connected to both sides of the mold bottom plate (35), and the two connecting shafts (38) are fixedly connected to the fixed shaft (6) through a connecting frame.

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