Workpiece etching liquid flow direction guiding equipment

The installation mechanism, which combines a worm gear-worm wheel-screw mechanism with a pull rope-positioning pin-positioning tooth head, solves the problem of inconvenient disassembly and assembly of etching nozzles and flow guide mold bases, enabling rapid disassembly and assembly and stable installation, thereby improving the maintenance efficiency and etching accuracy of the etching equipment.

CN120905674APending Publication Date: 2025-11-07JIANGSU BAIYUANHONG METAL TECH CO LTD
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Patent Information

Application Number
CN202511100044.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-07
Publication Date
2025-11-07

AI Technical Summary

Technical Problem

Existing workpiece etching solution flow guidance equipment has problems with the ease of disassembly and maintenance of etching nozzles and flow guide mold bases, as well as the reliability of installation, resulting in a decrease in etching accuracy and efficiency.

Method used

The installation mechanism adopts a combination of worm gear-worm wheel-screw mechanism and pull rope-positioning pin-positioning tooth head. The etching nozzle and flow guide mold seat can be quickly disassembled and securely installed by turning the hand, combined with the sealing ring and elastic compression component for sealing.

Benefits of technology

It enables rapid disassembly and maintenance of etching nozzles and flow guide mold bases, improving maintenance efficiency, ensuring the firmness and sealing effect of installation, and avoiding the cumbersome operation of traditional bolt tightening.

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Abstract

The invention discloses workpiece etching liquid flow direction guiding equipment. The workpiece etching liquid flow direction guiding equipment comprises a mounting base mounted on etching equipment, a liquid conveying pipe connector fixedly connected to the mounting base, a flow guiding mold base movably mounted at the bottom of the mounting base, and a plurality of etching nozzles fixedly arranged at the bottom of the flow guiding mold base. According to the invention, people can conveniently and quickly disassemble the flow guide die holder and the etching nozzle, so that people can conveniently clean and maintain the blocked flow guide die holder and etching nozzle, and meanwhile, the flow guide die holder and etching nozzle are convenient to mount after being cleaned, and can be quickly disassembled and maintained only through one rotating handle, so that the whole use is very convenient and fast, and the working efficiency is improved. The trouble that bolts need to be unscrewed or screwed one by one by using a special tool during disassembly and assembly due to the fact that a plurality of bolts are adopted for fastening in the prior art is avoided, the disassembly and assembly difficulty is smaller, the maintenance efficiency is improved, meanwhile, the disassembly and assembly are very firm after being installed, subsequent normal etching operation of the etching nozzle and the flow guide die holder is ensured, and the device is suitable for being popularized and used.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of etching technology, in particular to a workpiece etching liquid flow direction guiding device. BACKGROUND

[0002] In the field of workpiece processing, etching process is often widely used in the production and manufacturing of PCB boards, metal parts and other products. As a key component of the etching process, the performance of the workpiece etching liquid flow direction guiding device directly affects the etching precision, efficiency and processing quality of the workpiece. The device mainly sprays etching liquid to the surface of the workpiece in a specific flow direction through etching nozzles, and guides the flow path of the etching liquid with the help of a flow guide base, so as to ensure that the etching liquid can uniformly and stably act on the etching area. However, in actual production process, as the components directly contacted with the etching liquid, the etching nozzles and the flow guide base are prone to performance degradation due to corrosion of the etching liquid, blockage of impurities and long-term wear and tear, so regular disassembly and maintenance is needed, such as cleaning the blockage in the nozzle hole, replacing the worn nozzle or flow guide base, etc.

[0003] However, in the prior art, the connection structure of the etching nozzle and the flow guide base with the device mainly adopts multiple bolts fastening. When disassembling, the workers need to use special tools to loosen or tighten the bolts one by one, which not only has many operation steps and takes a long time, but also has a greater difficulty in disassembling and assembling the bolts, which seriously affects the maintenance efficiency. In addition, the reliability of the existing connection structure after installation is also difficult to guarantee. Since the fastening degree of the bolt depends on the operation experience of the workers, if the fastening force is insufficient, the etching nozzle and the flow guide base are prone to loosen and displace under the action of high-pressure spraying of the etching liquid, which leads to deviation of the etching liquid flow direction from the preset path, resulting in uneven etching of the workpiece and problems such as over-etching or under-etching.

[0004] Therefore, the existing workpiece etching liquid flow direction guiding device has great problems in the disassembly and maintenance convenience and the installation reliability of the etching nozzle and the flow guide base, which has become an important factor restricting the improvement of the etching process efficiency and processing quality. Therefore, the present application proposes a workpiece etching liquid flow direction guiding device. SUMMARY

[0005] Based on the technical problems existing in the background technology, the present application proposes a workpiece etching liquid flow direction guiding device.

[0006] The workpiece etching liquid flow direction guiding equipment provided by the application comprises a mounting seat mounted on an etching equipment, a liquid delivery pipe interface fixedly connected to the mounting seat, a flow guide die holder movably mounted at the bottom of the mounting seat, and a plurality of etching nozzles fixedly arranged at the bottom of the flow guide die holder, wherein a flow guide cavity is arranged on the flow guide die holder, a plurality of flow guide through slots are arranged on the inner wall of the bottom side of the flow guide cavity, the etching nozzles are connected to the flow guide cavity through the flow guide through slots, and an electromagnetic control valve for controlling the flow is arranged in the flow guide through slots; a through hole is arranged on the top side of the inner wall of the flow guide cavity, a liquid delivery hole is arranged on the mounting seat, and the liquid delivery pipe interface is connected to the flow guide cavity in sequence through the liquid delivery hole and the through hole; a sealing ring is further fixedly arranged on the flow guide die holder outside the circumferential side of the through hole; a mounting mechanism is arranged on the mounting seat, and the etching nozzles and the flow guide die holder are movably mounted on the bottom of the mounting seat through the mounting mechanism. The mounting mechanism comprises a transmission cavity symmetrically arranged on the mounting seat, a rotating cavity and a mounting groove arranged below the transmission cavity, mounting blocks fixedly connected to the two ends of the top of the flow guide die holder and movably inserted into the mounting groove, a clamping hole arranged on the mounting block, a clamping column movably arranged in the rotating cavity and movably clamped into the clamping hole at one end, a screw rod threadedly connected to the other end of the clamping column through a threaded groove, a rotating wheel fixedly sleeved on the screw rod, a pull rope fixedly wound on the rotating wheel, a first fixed pulley and a second fixed pulley rotatably arranged in the transmission cavity, a positioning pin movably connected to the other end of the pull rope through the first fixed pulley and the second fixed pulley, a positioning hole arranged on the top side of the inner wall of the clamping hole, and the bottom end of the positioning pin movably penetrating through the positioning hole, a plurality of positioning tooth heads fixedly arranged on the bottom end of the positioning pin, a tooth groove arranged on the top of the clamping column, and the positioning tooth heads being engaged with the tooth groove for positioning, an activity block fixedly connected to the left top of the positioning pin, an L-shaped support fixedly arranged on the bottom side of the inner wall of the transmission cavity, and a spring fixedly connected between the activity block and the top side of the inner wall of the L-shaped support. The inner part of the two ends of the mounting seat is provided with a movable cavity, a worm is rotatably arranged in the movable cavity, the left end of the screw rod rotatably penetrates into the movable cavity and is fixedly connected with a worm wheel, and the worm is engaged with the worm wheel.

[0007] As a further setting of the application, the bottom of the mounting seat outside the circumferential side of the liquid delivery hole is further provided with an annular groove, an activity ring is sealingly and slidably sleeved in the annular groove, a rubber sealing ring is fixedly connected to the bottom side of the activity ring, and the rubber sealing ring is in sealing cooperation with the sealing ring; a compression groove is arranged on the top side of the inner wall of the annular groove, a spring compression member is fixedly connected in the compression groove, and the bottom of the spring compression member is fixedly connected with the activity ring.

[0008] As a further setting of the application, the right top of the positioning pin is fixedly connected with a first sliding block, a first guide rail is arranged on the side wall of the transmission cavity, and the first sliding block is slidably mounted on the first guide rail in the vertical direction.

[0009] As a further setting of the application, the bottom side of the clamping column is fixedly provided with a second sliding block, and the inner wall of the bottom side of the rotating cavity is provided with a second guide rail, and the second sliding block is slidingly installed on the second guide rail in the horizontal direction.

[0010] As a further setting of the application, the top inner wall of the rotating cavity is provided with a transmission hole, and the pull rope is movably penetrated through the transmission hole.

[0011] As a further setting of the application, the sidewall of the rotating cavity is provided with a mounting hole, the mounting hole is provided with a bearing, and the screw rod is rotatably installed on the bearing.

[0012] As a further setting of the application, the inner wall of the mounting groove is provided with a movable hole, and the clamping column is movably penetrated through the hole in the horizontal direction.

[0013] As a further setting of the application, a plurality of etching nozzles are uniformly arranged in an annular array at the bottom of the flow guide die holder.

[0014] The beneficial effects of the application are: 1、In the application, the worm is rotated by rotating the hand, the worm is meshed and transmitted with the worm gear when rotating, and the screw rod is rotated to drive the rotating wheel and wind the pull rope, the pull rope is transmitted through the first and second fixed pulleys to drive the positioning pin and the positioning tooth head to move up, and the positioning pin drives the movable block to press the spring, so that the meshing positioning of the positioning tooth head on the tooth groove of the clamping column can be first released; and when the screw rod rotates, the clamping column is driven by the screw groove to rotate left based on the screw rod, so that the clamping column can be moved out of the clamping hole, then the flow guide die holder and the etching nozzle are moved downward, and the mounting block is taken out of the mounting groove, so that the flow guide die holder and the etching nozzle can be quickly disassembled, which can facilitate the cleaning and maintenance of the blocked flow guide die holder and etching nozzle. 2、In the application, when the etching nozzle and the mounting block on the flow guide die holder are inserted into the mounting groove upward after cleaning and maintenance, and the hand is reversely rotated, the positioning tooth head can be meshed and positioned on the tooth groove of the clamping column under the action of the spring, so that after installation, the clamping column and the clamping hole can be clamped and matched to realize the clamping positioning of the mounting block, and the positioning tooth head and the tooth groove can be meshed and positioned to position the clamping column, so that the mounting block can be more stably installed and positioned in the mounting groove, so that the final flow guide die holder and etching nozzle can be firmly installed and fixed on the mounting seat, and the loosening phenomenon is not easy to occur, so as to ensure the stable etching operation of the etching nozzle in the subsequent process. 3、The sealing ring of the sealing ring and the rubber sealing ring are sealed and connected, and the elastic compression member generates elastic reaction, so that the rubber sealing ring and the sealing ring are tightly abutted, and the sealing effect after installation is better; In summary, the workpiece etching liquid flow guiding device not only facilitates people to quickly disassemble the flow guiding die holder and the etching nozzle for cleaning and maintenance of the blocked flow guiding die holder and the etching nozzle, but also facilitates installation after cleaning, and the disassembly and assembly maintenance can be quickly realized through one turn, so that the whole use is very convenient, the difficulty of disassembly and assembly is smaller, the maintenance efficiency is improved, and the etching nozzle and the flow guiding die holder are very firm after installation, so that normal etching operation is ensured, and the workpiece etching liquid flow guiding device is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of a workpiece etching liquid flow guiding device is provided. Figure 2 A whole schematic view of the flow guiding die holder and the mounting seat after section is provided. Figure 3 A structure schematic view of part A in the application is provided. Figure 2 Figure 4 A local structure schematic view between the positioning pin and the clamping column is provided. Figure 5 A direct structure schematic view of the worm, the worm wheel and the screw rod is provided.

[0016] In the figure: 1, etching nozzle; 101, flow guiding die holder; 102, flow guiding groove; 103, electromagnetic control valve; 104, flow guiding cavity; 105, through hole; 106, sealing ring; 107, mounting block; 108, clamping hole; 2, mounting seat; 201, liquid conveying hole; 202, rubber sealing ring; 203, mounting groove; 204, transmission cavity; 205, rotating cavity; 206, movable cavity; 207, groove; 208, positioning hole; 3, liquid conveying pipe interface; 4, turn; 5, worm; 6, worm wheel; 7, screw rod; 8, clamping column; 801, thread groove; 802, tooth groove; 9, rotating wheel; 10, pull rope; 11, first fixed pulley; 12, second fixed pulley; 13, positioning pin; 131, positioning tooth head; 14, movable block; 15, spring; 16, L-shaped support; 17, first sliding block; 18, second sliding block; 19, movable ring; 20, elastic compression member; 21, annular groove; 22, compression groove; 23, bearing; 24, transmission hole. DETAILED DESCRIPTION

[0017] ​The application will be further described below with reference to specific embodiments. Embodiment

[0018] Reference Figures 1-5 In this embodiment, a workpiece etching liquid flow guiding device is provided, which comprises a mounting seat 2 mounted on an etching device, a liquid delivery pipe interface 3 fixedly connected to the mounting seat 2, a flow guide die holder 101 movably mounted at the bottom of the mounting seat 2, and a plurality of etching nozzles 1 fixedly arranged at the bottom of the flow guide die holder 101. The flow guide die holder 101 is provided with a flow guide cavity 104, and a plurality of arrayed flow guide through slots 102 are arranged on the inner wall of the bottom side of the flow guide cavity 104. The etching nozzles 1 are connected to the flow guide cavity 104 through the flow guide through slots 102, and an electromagnetic control valve 103 for controlling the flow is arranged in the flow guide through slots 102. A through hole 105 is arranged on the top side inner wall of the flow guide cavity 104, and a liquid delivery hole 201 is arranged on the mounting seat 2. The liquid delivery pipe interface 3 is connected to the flow guide cavity 104 in sequence through the liquid delivery hole 201 and the through hole 105. A sealing ring 106 is fixedly arranged on the flow guide die holder 101 outside the circumference of the through hole 105. The mounting seat 2 is provided with a mounting mechanism, and the etching nozzles 1 and the flow guide die holder 101 are movably mounted at the bottom of the mounting seat 2 through the mounting mechanism. Reference Figures 2-4The installation mechanism comprises a transmission cavity 204 symmetrically arranged on the mounting seat 2, a rotating cavity 205 and a mounting groove 203 arranged below the transmission cavity 204 respectively, and mounting blocks 107 fixedly connected to the top of both ends of the guide flow die holder 101 and movably inserted into the mounting groove 203.

[0019] Referring to Figures 2-3 The bottom of the mounting seat 2 outside the circumference of the infusion hole 201 is further provided with an annular groove 21, the annular groove 21 is movably sleeved with an elastic ring 19, the bottom of the elastic ring 19 is fixedly connected with a rubber sealing ring 202, and the rubber sealing ring 202 is in sealing contact with the sealing ring 106; the top inner wall of the annular groove 21 is provided with a compression groove 22, the compression groove 22 is fixedly connected with an elastic compression member 20, and the bottom of the elastic compression member 20 is fixedly connected with the elastic ring 19.

[0020] Referring to Figures 2-3 The right top of the positioning pin 13 is fixedly connected with a first sliding block 17, and the sidewall of the transmission cavity 204 is provided with a first guide rail, and the first sliding block 17 is slidably installed on the first guide rail in the vertical direction; the bottom of the clamping column 8 is fixedly provided with a second sliding block 18, and the bottom inner wall of the rotating cavity 205 is provided with a second guide rail, and the second sliding block 18 is slidably installed on the second guide rail in the horizontal direction.

[0021] Referring to Figures 2-3In the middle, the top side of the rotating cavity 205 is provided with a transmission hole 24, and the pull rope 10 is movably penetrated in the transmission hole 24; the side wall of the rotating cavity 205 is provided with a mounting hole, and the bearing 23 is arranged in the mounting hole, and the screw rod 7 is rotatably arranged on the bearing 23.

[0022] Wherein, the inner wall of the installation groove 203 is provided with a movable hole, and the clamping column 8 is movably penetrated in the hole; a plurality of etching nozzles 1 are uniformly arranged in an annular array on the bottom of the flow guide die holder 101.

[0023] As Figures 1-5The workpiece etching liquid flow direction guide device is shown, when the etching nozzle and the flow guide die block need to be regularly disassembled and maintained due to etching liquid corrosion, impurity blockage and other factors, the flow guide die block 101 and the etching nozzle 1 can be conveniently disassembled for cleaning the blockage in the nozzle hole. In the specific disassembly, only the forward and reverse rotation of the worm 5 by the rotating handle 4 is needed. When the rotating handle 4 rotates the worm 5, the worm 5 meshes with the worm wheel 6 to drive the screw 7 to rotate. When the screw 7 rotates, the rotating wheel 9 rotates and the pull rope 10 is wound and pulled. The pull rope 10 drives the positioning pin 13 and the positioning tooth head 131 to move up through the first fixed pulley 11 and the second fixed pulley 12. At the same time, the positioning pin 13 drives the movable block 14 to press the spring 15. In this way, the meshing positioning of the positioning tooth head 131 to the tooth groove 13 on the clamping column 8 can be first released. When the screw 7 rotates, the clamping column 8 is driven by the screw thread groove 801 based on the screw 7 to the left, so that the clamping column 8 is moved out of the clamping hole 108. Then the flow guide die block 101 and the etching nozzle 1 are moved downward, and the mounting block 107 is taken out of the mounting groove 203. In this way, the flow guide die block 101 and the etching nozzle 1 can be quickly disassembled, so that the blocked flow guide die block 101 and the etching nozzle 1 can be conveniently cleaned and maintained. Similarly, when the installation is needed after cleaning and maintenance, the mounting block 107 on the etching nozzle 1 and the flow guide die block 101 is inserted into the mounting groove 203, and the worm 5 meshes with the worm wheel 6 to drive the screw 7 to rotate reversely through the reverse rotation of the rotating handle 4. In this way, the clamping column 8 can be driven by the screw thread groove 801 based on the screw 7 to the right, so that the right end of the clamping column 8 can be moved into the clamping hole 108. At the same time, when the screw 7 reversely rotates, the rotating wheel 9 releases the pull rope 10. Under the action of the spring 15, the positioning tooth head 131 can finally mesh with the tooth groove 13 on the clamping column 8. In this way, after installation, the clamping column 8 and the clamping hole 108 can be clamped and matched to realize the clamping positioning of the mounting block 107. The positioning tooth head 131 and the tooth groove 13 can be meshed and positioned to position the clamping column 8. In this way, the mounting block 107 can be more stably installed and positioned in the mounting groove 203, so that the finally obtained flow guide die block 101 and the etching nozzle 1 can be firmly installed and fixed on the mounting seat 2, and the loosening phenomenon is not easy to occur. In this way, the etching nozzle 1 can be stably etched in the subsequent etching operation.

[0024] In addition, after installation, the sealing ring 106 on the etching nozzle 1 is also in sealing abutment with the rubber sealing ring 202, and the elastic compression member 20 generates an elastic reaction force, which can further make the rubber sealing ring 202 tightly abut against the sealing ring 106, so that the sealing effect after installation is better, and the problem that in the prior art, multiple bolts are used for fastening, and during disassembly, a special tool is needed to loosen or tighten the bolts one by one, is avoided, so that the disassembly difficulty is smaller, the maintenance efficiency is improved, and after installation, the etching nozzle and the flow guide die holder are very firm, so that in subsequent normal etching operation, only one turn is needed to quickly realize disassembly and maintenance, so that the overall use effect is better, and the application is suitable for popularization and use.

[0025] The above is only a preferred specific embodiment of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the application within the technical range disclosed by the application, which should be covered by the protection scope of the application.

Claims

1. A workpiece etching liquid flow direction guiding device, comprising a mounting base (2) mounted on an etching device, a liquid supply pipe interface (3) fixedly connected to the mounting base (2), a flow guide die holder (101) movably mounted at the bottom of the mounting base (2), and a plurality of etching nozzles (1) fixedly arranged at the bottom of the flow guide die holder (101), characterized in that, The flow guide die base (101) is provided with a flow guide cavity (104), a plurality of arrayed flow guide through slots (102) are arranged on the inner wall of the bottom side of the flow guide cavity (104), the etching nozzle (1) is connected with the flow guide cavity (104) through the flow guide through slots (102), and the flow guide through slots (102) are provided with electromagnetic control valves (103) for controlling the flow guide flow; the top side inner wall of the flow guide cavity (104) is provided with a through hole (105), the mounting base (2) is provided with a transfusion hole (201), and the transfusion tube interface (3) is connected with the flow guide cavity (104) in sequence through the transfusion hole (201) and the through hole (105); the flow guide die base (101) located on the circumferential outer side of the through hole (105) is further fixedly provided with a sealing ring (106); the mounting base (2) is provided with a mounting mechanism, and the etching nozzle (1) and the flow guide die base (101) are movably mounted on the bottom of the mounting base (2) through the mounting mechanism; The mounting mechanism comprises transmission cavities (204) symmetrically arranged on the mounting base (2), a rotating cavity (205) and a mounting groove (203) are arranged below the transmission cavities (204), mounting blocks (107) are fixedly connected to the top of both ends of the flow guide die base (101), and the mounting blocks (107) are movably inserted into the mounting groove (203); the mounting blocks (107) are provided with clamping holes (108), clamping columns (8) are movably arranged in the rotating cavities (205), one end of the clamping columns (8) is movably clamped in the clamping holes (108), the other end of the clamping columns (8) is threadedly connected with a screw rod (7) through a threaded groove (801), the screw rod (7) is further fixedly sleeved with a rotating wheel (9), the rotating wheel (9) is fixedly wound with a pull rope (10), first and second fixed pulleys (11) and (12) are rotatably arranged in the transmission cavities (204), the other end of the pull rope (10) is movably connected with a positioning pin (13) in sequence through the first and second fixed pulleys (11) and (12), the top side inner wall of the clamping hole (108) is provided with a positioning hole (208), and the bottom end of the positioning pin (13) movably penetrates the positioning hole (208); the bottom end of the positioning pin (13) is fixedly provided with a plurality of positioning tooth heads (131), the top of the clamping column (8) is provided with a tooth groove (802), the positioning tooth heads (131) are in engagement with the tooth groove (802) for positioning, the left top of the positioning pin (13) is fixedly connected with a movable block (14), an L-shaped support (16) is fixedly arranged on the bottom side inner wall of the transmission cavity (204), and the movable block (14) is fixedly connected with the L-shaped support (16) through a spring (15); Both ends of the mounting base (2) are internally provided with movable cavities (206), a worm (5) is rotatably arranged in the movable cavities (206), the left end of the screw rod (7) rotatably penetrates into the movable cavities (206) and is fixedly connected with a worm wheel (6), and the worm (5) is in engagement with the worm wheel (6); the bottom of the mounting base (2) is provided with a recess (207), the bottom end of the worm (5) rotatably penetrates into the recess (207) and is fixedly connected with a rotating handle (4).

2. The workpiece etching liquid flow direction guiding apparatus according to claim 1, wherein The bottom of the mounting base (2) located outside the circumference of the infusion hole (201) is also provided with an annular groove (21), an active ring (19) is sealingly sleeved in the annular groove (21), the bottom side of the active ring (19) is fixedly connected with a rubber sealing ring (202), and the rubber sealing ring (202) is in abutting and sealing cooperation with the sealing ring (106); the top side inner wall of the annular groove (21) is provided with a compression groove (22), a spring compression piece (20) is fixedly connected in the compression groove (22), and the bottom of the spring compression piece (20) is fixedly connected with the active ring (19).

3. The workpiece etching fluid flow direction guiding apparatus according to claim 1, wherein The right side top of the positioning pin (13) is fixedly connected with a first sliding block (17), a first guide rail is arranged on the side wall of the transmission cavity (204), and the first sliding block (17) is slidingly installed on the first guide rail in the vertical direction.

4. The workpiece etching fluid flow direction guiding apparatus according to claim 1, wherein The bottom side of the clamping column (8) is fixedly provided with a second sliding block (18), a second guide rail is arranged on the bottom side inner wall of the rotating cavity (205), and the second sliding block (18) is slidingly installed on the second guide rail in the horizontal direction.

5. The workpiece etching fluid flow direction guiding apparatus according to claim 1, wherein The top side inner wall of the rotating cavity (205) is provided with a transmission hole (24), and the pull rope (10) is movably penetrated in the transmission hole (24).

6. The workpiece etching fluid flow direction guiding apparatus according to claim 1, wherein The side wall of the rotating cavity (205) is provided with a mounting hole, a bearing (23) is arranged in the mounting hole, and the screw rod (7) is rotatably installed on the bearing (23).

7. The workpiece etching fluid flow direction guiding apparatus according to claim 1, wherein The inner wall of the mounting groove (203) is provided with a movable hole, and the clamping column (8) is movably penetrated in the hole.

8. The workpiece etching fluid flow direction guiding apparatus according to claim 1, wherein A plurality of etching nozzles (1) are uniformly arranged in an annular array on the bottom of the flow guide die base (101).