Etching device for circuit board processing

Abstract

The present invention belongs to the technical field of electronic component manufacturing, and relates to an etching device for circuit board processing, including legs, a U-shaped box, a cover plate, a driving motor, a rotating shaft and a swivel, wherein two legs are provided, a U-shaped box is connected between the tops of the two legs, a cover plate is connected to the top of the U-shaped box, a driving motor is installed on the U-shaped box, a rotating shaft is connected to the output shaft of the driving motor, the rotating shaft is rotatably connected to the U-shaped box, and swivels are connected on both sides of the rotating shaft. During operation, the present invention can support the circuit board through a supporting plate, limit the edge position of the circuit board through a limiting plate, and then control the circuit board to rotate to the etching liquid for etching. During the etching process, no material presses the circuit board, which can avoid demolding of the protective film on the surface of the circuit board, thereby ensuring the etching effect.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic component manufacturing and relates to an etching device for circuit board processing. Background Art

[0002] Etching of integrated circuit boards is one of the most important processes in PCB manufacturing. Simply put, wet PCB etching is a process of controlling corrosion. PCB etching is the process of removing unwanted copper from the circuit board. During the operation, a protective coating is first applied to the position on the circuit board that does not need to be etched, and then an etching solution is used to remove the unwanted copper part of the circuit board, thereby etching the circuit board.

[0003] At present, when etching a circuit board, there are usually two etching methods, namely immersion and spraying. In the immersion etching process, the circuit board is usually placed on a conveyor, and the pressure roller of the conveyor gradually moves downward to slowly convey the circuit board downward into the etching solution. In the conveying process, the pressure roller will squeeze the circuit board downward. During etching, the surface of the circuit board is pressed by the pressure roller, which can easily cause the protective film on the surface of the circuit board to fall off and cause a defective finished product. There is also a method of hanging the circuit board on a clamping device, and driving the circuit board down for etching through the clamping device. However, when operating the clamping device, it is also necessary to manually operate the clamping device one by one to clamp the circuit board. The overall operation is cumbersome and inefficient. Summary of the invention

[0004] In view of this, the present invention provides an etching device for circuit board processing.

[0005] Technical solution: An etching device for circuit board processing, comprising a support leg, a U-shaped box, a cover plate, a drive motor, a rotating shaft, a swivel and a placement mechanism, wherein two support legs are provided, a U-shaped box is connected between the tops of the two support legs, a cover plate is connected to the top of the U-shaped box, a drive motor is installed on the U-shaped box, a rotating shaft is connected to the output shaft of the drive motor, the rotating shaft is rotatably connected to the U-shaped box, swivels are connected on both sides of the rotating shaft, the front end of the rotating shaft passes through the U-shaped box and is flush with the front side of the U-shaped box, the interior of the rotating shaft is hollow and the hollow position extends to the front side of the rotating shaft, the U-shaped box is provided with a discharge port for removing the etched circuit board, and a placement mechanism for placing the circuit board is provided between the two swivels.

[0006] In addition, it is particularly preferred that the placement mechanism includes a supporting plate, a guide rod, a bidirectional screw rod and a limit plate, a plurality of supporting plates for supporting circuit boards are evenly spaced and connected between the middle parts of the two rotating rings, a plurality of guide rods and a plurality of bidirectional screw rods are evenly spaced and connected between the outsides of the two rotating rings, the bidirectional screw rods are rotatably connected to the rotating rings, the number of the bidirectional screw rods and the guide rods is consistent with the number of the supporting plates, and limit plates for limiting the circuit boards are slidably connected on both sides of the guide rods, and the limit plates are threadably matched with the bidirectional screw rods.

[0007] In addition, it is particularly preferred that a clamping mechanism is also included, and the clamping mechanism includes a sliding block, an elastic member, a clamping plate and a convex shaft. The sliding block is slidably connected to the limit plate, and an elastic member is connected between the sliding block and the limit plate. Clamping plates are slidably connected to both sides of the limit plate. The two clamping plates can slide to clamp and fix the circuit board. The clamping plate is connected to the convex shaft, and oblique grooves are opened on both sides of the sliding block. The convex shaft is located in the oblique groove and is slidably connected to the oblique groove.

[0008] In addition, it is particularly preferred that it also includes a pushing mechanism, which includes an air pump, an air supply pipe, a sleeve, a pushing plate, an elastic member 2 and a mounting frame, the air pump is installed on the U-shaped box, the air supply end of the air pump is connected to the air supply pipe, the air supply pipe extends into the middle position inside the rotating shaft, the U-shaped box is connected to the mounting frame, the air supply pipe is connected to the mounting frame, the air outlet end of the air supply pipe faces the discharge port, the air outlet end of the air supply pipe is fitted with the inner wall of the rotating shaft, the rotating shafts are evenly spaced apart with a number of air outlet holes that is the same as the supporting plate, the rotation of the rotating shaft can drive the air outlet holes to rotate until they are fitted with the air outlet end of the air supply pipe, a plurality of sleeves are evenly spaced along the circumferential direction on the rotating shaft, the number of the sleeves is the same as the number of the air outlet holes and are connected to the air outlet holes, the sleeve is slidably connected with a pushing plate, the pushing plate passes through the supporting plate and is slidably connected to the supporting plate, and the elastic member 2 is connected between the pushing plate and the rotating shaft.

[0009] In addition, it is particularly preferred that a loading mechanism is also included, which includes a discharge plate, a baffle, a screw feeding rod, two bidirectional screws and a sliding frame, the top of the U-shaped box is connected to the discharge plate, the discharge plate is connected to the baffle, and there is a vertical gap between the baffle and the discharge plate for the circuit board to pass through, the baffle is rotatably connected to the two bidirectional screws, both sides of the two bidirectional screws are connected to the sliding frame by threads, the sliding frame is slidably connected to the baffle, and the sliding frame is rotatably connected to the screw feeding rod.

[0010] In addition, it is particularly preferred that a transmission mechanism is also included, and the transmission mechanism includes a sliding rack, a transmission gear and three elastic parts. The two sliding frames are slidably connected with sliding racks, and the spiral feeding rod is connected with a transmission gear through a one-way clutch. The sliding rack is meshed with the transmission gear, and three elastic parts are connected between the sliding rack and the sliding frame. The lower part of the sliding rack is provided with an inclined surface, and the inclined surface of the sliding rack is located at the moving track of the limit plate.

[0011] In addition, it is particularly preferred that an automatic unlocking mechanism is also included, which includes an extrusion frame 1, a pressure rod and an extrusion frame 2, the extrusion frame 1 is connected to the middle of the top of the U-shaped box, the lower part of the extrusion frame is provided with an inclined surface, the left side of the U-shaped box is connected to the position above the discharge port, the lower part of the extrusion frame 2 is also provided with an inclined surface, the top of the sliding block is connected to the pressure rod, and the extrusion frame 1 and the extrusion frame 2 are both located at the moving track of the pressure rod.

[0012] In addition, it is particularly preferred that a rubber scraper is further included, and the top and the bottom of the discharge port are both connected with rubber scrapers.

[0013] In addition, it is particularly preferred that a transmission mechanism is also included, which includes a belt drive group, a side frame and a conveying wheel axle. Two side frames are connected to the U-shaped box, and the side frames are located below the discharge port. Multiple conveying wheel axles for conveying etched circuit boards are rotatably connected evenly between the two side frames, and a belt drive group is provided between the rightmost conveying wheel axle and the rotating shaft.

[0014] Beneficial effects: 1. During operation, the present invention can support the circuit board through the support plate, limit the edge position of the circuit board through the limit plate, and then control the circuit board to rotate to the etching liquid for etching. During the etching process, there is no material pressing on the circuit board, which can avoid the protective film on the surface of the circuit board from being demolded, thereby ensuring the etching effect.

[0015] 2. When adding circuit boards, the present invention can place the circuit boards on the spiral feeding rods on both sides, and transport the circuit boards by rotating the spiral feeding rods, so that the circuit boards are added to the supporting plate. The rotation of the spiral feeding rods can be achieved through the transmission between the sliding rack and the transmission gear, without manual operation, thereby achieving the effect of automatically adding circuit boards, and there is no need for manual frequent addition of circuit boards during operation.

[0016] 3. After the etching of the circuit board is completed, when the circuit board is transported to the discharge port, the air pump can be controlled to supply gas through the air pipe and inject the gas into the sleeve through the air outlet, thereby squeezing the push plate in the sleeve, so that the push plate pushes out the etched circuit board, thereby achieving the effect of automatically pushing out the etched circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the placement mechanism of the present invention.

[0019] Figure 3 It is a cross-sectional view of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0021] Figure 5 This is a first cross-sectional view of the pusher mechanism of the present invention.

[0022] Figure 6 This is a second cross-sectional view of the pusher mechanism of the present invention.

[0023] Figure 7 It is a structural schematic diagram of the feeding mechanism and the transmission mechanism of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the feeding mechanism of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the spiral feeding rod and the bidirectional screw rod 2 of the present invention.

[0026] Fig.10 It is a schematic diagram of the first structure of the transmission mechanism of the present invention.

[0027] Fig.11 It is a second structural schematic diagram of the transmission mechanism of the present invention.

[0028] Fig.12 It is a structural schematic diagram of the automatic unlocking mechanism of the present invention.

[0029] Fig.13 It is a structural schematic diagram of the automatic unlocking mechanism of the U-shaped box after being cut open according to the present invention.

[0030] Fig.14 For the present invention Fig.13 Enlarged view of part A in .

[0031] Fig.15 For the present invention Fig.13 Enlarged view of part B in FIG.

[0032] Fig.16 It is a structural schematic diagram of the transmission mechanism of the present invention.

[0033] In the figure: 1. support leg, 2. U-shaped box, 21. discharge port, 22. cover plate, 3. drive motor, 4. rotating shaft, 5. swivel, 51. supporting plate, 52. guide rod, 53. two-way screw rod 1, 54. limiting plate, 61. sliding block, 62. elastic member 1, 63. clamping plate, 631. cam shaft, 71. air pump, 72. air pipe, 73. sleeve, 74. push plate, 75. mounting frame, 76. elastic member 2, 81. discharge plate, 82. baffle, 83. spiral feeding rod, 85. two-way screw rod 2, 86. sliding frame, 91. sliding rack, 92. transmission gear, 93. elastic member 3, 101. extrusion frame 1, 102. pressure rod, 103. extrusion frame 2, 12. rubber scraper, 131. belt drive group, 132. side frame, 133. conveying wheel shaft. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] An etching device for circuit board processing, such as Figure 1-Figure 4 As shown, it includes a support leg 1, a U-shaped box 2, a cover plate 22, a drive motor 3, a rotating shaft 4, a swivel 5 and a placing mechanism, wherein two support legs 1 are provided, a U-shaped box 2 is connected between the tops of the two support legs 1, a cover plate 22 is connected to the left side of the top of the U-shaped box 2, a drive motor 3 is installed in the middle of the rear side of the U-shaped box 2, a rotating shaft 4 is connected to the output shaft of the drive motor 3, the rotating shaft 4 is rotatably connected to the U-shaped box 2, and swivels 5 are connected to the front and rear sides of the rotating shaft 4, the front end of the rotating shaft 4 passes through the U-shaped box 2 and is flush with the front side surface of the U-shaped box 2, the interior of the rotating shaft 4 is hollow and the hollow position extends to the front side surface of the rotating shaft 4, a discharge port 21 is opened in the middle of the left side of the U-shaped box 2 for the removal of the etched circuit board, and a placing mechanism for placing the circuit board is provided between the two swivels 5.

[0036] like Figure 2-Figure 4As shown, the placement mechanism includes a supporting plate 51, a guide rod 52, a bidirectional screw 53 and a limit plate 54. A plurality of supporting plates 51 for supporting circuit boards are evenly spaced and connected between the middle parts of the two rotating rings 5. A plurality of guide rods 52 and a plurality of bidirectional screws 53 are evenly spaced and connected between the outsides of the two rotating rings 5. The bidirectional screw 53 is rotatably connected to the rotating ring 5. The number of the bidirectional screw 53 and the guide rods 52 is consistent with the number of the supporting plates 51. The front and rear sides of the guide rods 52 are both slidably connected with the limit plates 54. The two limit plates 54 are close to each other to resist the circuit board, thereby limiting the circuit board. The limit plates 54 are threadedly matched with the bidirectional screw 53 so that the rotation of the bidirectional screw 53 can drive the limit plates 54 to move.

[0037] like Figure 2-Figure 4 As shown, it also includes a clamping mechanism, which includes a sliding block 61, an elastic member 62, a clamping plate 63 and a convex shaft 631. The sliding block 61 is slidably connected to the limit plate 54, and an elastic member 62 is connected between the sliding block 61 and the limit plate 54. The elastic member 62 is a reset spring. The left and right sides of the limit plate 54 are slidably connected to the clamping plates 63. The two clamping plates 63 can slide to clamp and fix the circuit board. The clamping plate 63 is connected to the convex shaft 631, and oblique grooves are provided on both sides of the sliding block 61. The convex shaft 631 is located in the oblique groove and is slidably connected to the oblique groove, so that the sliding block 61 can squeeze the convex shaft 631 to move through the oblique groove when moving, thereby driving the clamping plate 63 to move.

[0038] When the circuit board needs to be etched, the etching device can be used. Initially, etching liquid is added into the U-shaped box 2. When in use, the uppermost sliding block 61 is first pressed downward to move the elastic member 62. When the sliding block 61 moves downward, the convex shafts 631 on both sides are squeezed away from each other through the inclined groove, thereby driving the two clamping plates 63 to move away from each other. Then the circuit board can be placed on the supporting plate 51, between the limit plates 54 on the front and rear sides of the placed circuit board and the clamping plates 63 on the left and right sides. Then the sliding block 61 can be released, and the sliding block 61 can be reset under the action of the elastic member 62. When resetting, the sliding block 61 can squeeze the clamping plates 63 on both sides close to each other through the inclined groove to clamp the circuit board, thereby limiting the circuit board through the limit plates 54 and the clamping plates 63 to avoid the circuit board position shifting during the transportation process. Then the drive motor 3 can be controlled to drive the rotating shaft 4 to rotate, thereby driving the rotating ring 5 to rotate. When the ring 5 rotates, it can drive the limit plate 54 and the clamping plate 63 to rotate, so as to transport the placed circuit board. When the other limit plates 54 rotate to the top of the U-shaped box 2, the drive motor 3 is controlled to stop running, and then a new circuit board is placed according to the above operation. This is repeated to achieve the addition and transportation of the circuit board. As the circuit board is transported to the lower part of the U-shaped box 2, the circuit board can be brought into contact with the etching liquid, so that the etching liquid is used to etch the circuit board. After the treatment, the circuit board continues to be transported, and the circuit board can be transported to the discharge port 21, and then the circuit board can be pulled out. In this way, the etching treatment of the circuit board can be achieved, and during the etching process, nothing presses on the circuit board, which can prevent the protective film on the surface of the circuit board from falling off, ensuring the etching effect, and can continuously add circuit boards and etch the circuit boards during transportation, so the overall efficiency is higher.

[0039] like Figure 3 , Figure 4 and Figure 6As shown, it also includes a pushing mechanism, which includes an air pump 71, an air pipe 72, a sleeve 73, a pushing plate 74, an elastic member 76 and a mounting bracket 75. The air pump 71 is installed on the front side of the U-shaped box 2, and the air delivery end of the air pump 71 is connected to the air pipe 72, and the air pipe 72 extends into the middle position inside the rotating shaft 4. The front side of the U-shaped box 2 is connected to the mounting bracket 75, and the mounting bracket 75 extends into the interior of the rotating shaft 4. The air pipe 72 is connected to the mounting bracket 75, so that the air pipe 72 is fixed, and the air outlet end of the air pipe 72 faces the discharge port 21 and fits the inner wall of the rotating shaft 4. The rotating shafts 4 are evenly spaced apart with air outlet holes whose number is the same as the supporting plate 51. The rotation of the rotating shaft 4 can drive the air outlet holes to rotate until they are in contact with the air outlet end of the air pipe 72. A plurality of sleeves 73 are evenly spaced apart and connected to the middle part of the outer side of the rotating shaft 4 along the circumferential direction. The number of the sleeves 73 is the same as the number of the air outlet holes and they are connected to the air outlet holes. A push plate 74 is slidably connected to the sleeve 73. The push plate 74 passes through the supporting plate 51 and is slidably connected to the supporting plate 51. An elastic member 76 is connected between the push plate 74 and the rotating shaft 4. The elastic member 76 is an elastic rope.

[0040] During the etching process, the air pump 71 can be started to allow the air pipe 72 to continuously spray air. When the rotating shaft 4 rotates to drive the supporting plate 51 and the circuit board to align with the discharge port 21, the push plate 74 and the sleeve 73 corresponding to the supporting plate 51 are also rotated to align with the outlet end of the air pipe 72. At this time, the exhaust of the air pipe 72 can allow the gas to enter the sleeve 73 through the air outlet and squeeze the push plate 74 to move to the left. The elastic member 76 is stretched, and the push plate 74 can push the etched circuit board out of the discharge port 21 when moving to the left, thereby achieving the effect of automatic unloading. After the circuit board is sent out, the rotating shaft 4 continues to rotate, which will cause the sleeve 73 to separate from the air pipe 72. At this time, the push plate 74 is reset under the action of the elastic member 76.

[0041] like Figure 7-Figure 9 As shown, it also includes a loading mechanism, which includes a discharge plate 81, a baffle 82, a spiral feeding rod 83, a bidirectional screw rod 85 and a sliding frame 86. The discharge plate 81 is connected to the right side of the top of the U-shaped box 2, and the baffle 82 is connected to the left side of the discharge plate 81. There is a vertical gap between the baffle 82 and the discharge plate 81, and the gap can allow a circuit board to pass through. The left side of the baffle 82 is rotatably connected to the bidirectional screw rod 85, and the front and rear sides of the bidirectional screw rod 85 are both connected to the sliding frame 86 by threads. The sliding frame 86 is slidably connected to the baffle 82, and the sliding frame 86 is rotatably connected to the spiral feeding rod 83. When placing the circuit board, it can be placed in the spiral groove of the spiral feeding rods 83 on both sides, so that the spiral feeding rods 83 can rotate to transport the circuit board.

[0042] like Figure 7, Fig.10 and Fig.11 As shown, it also includes a transmission mechanism, which includes a sliding rack 91, a transmission gear 92 and an elastic member 3 93. The two sliding frames 86 are slidably connected with the sliding racks 91. The left side of the spiral feeding rod 83 is connected to the transmission gear 92 through a one-way clutch. The sliding rack 91 is meshed with the transmission gear 92. An elastic member 3 93 is connected between the sliding rack 91 and the sliding frame 86. The elastic member 3 93 is a connecting spring. An inclined surface is provided on the lower left side of the sliding rack 91. The inclined surface of the sliding rack 91 is located at the moving track of the limit plate 54, so that the limit plate 54 can push the inclined surface of the sliding rack 91 when moving, thereby squeezing the sliding rack 91 to move.

[0043] Initially, the circuit boards can be placed at intervals in the spiral feeding grooves of the spiral feeding rods 83 on both sides. When the rotating shaft 4 rotates, the limit plate 54 will be driven to rotate. When the limit plate 54 rotates, it can contact the inclined surface of the sliding rack 91. Then, the limit plate 54 continues to move and can squeeze the sliding rack 91 upward through the inclined surface on the sliding rack 91. The elastic member 3 93 is compressed, and the sliding rack 91 rubs the transmission gear 92 to rotate when it moves upward. At this time, the rotation of the transmission gear 92 can drive the spiral feeding rod 83 to rotate. The spiral feeding rod 83 rotates When the circuit board is moved, it can transport the circuit board to the left, so that the circuit board moves to the gap between the baffle 82 and the discharge plate 81 and falls through the gap. At this time, the supporting plate 51 just moves below the gap, and the circuit board can fall on the supporting plate 51. Then the limit plate 54 continues to rotate and disengages from the sliding rack 91. Under the action of the elastic member 93, the sliding rack 91 moves downward and resets. When the sliding rack 91 moves downward and resets, it will rub the transmission gear 92 to rotate in the opposite direction. At this time, under the action of the one-way clutch, the transmission gear 92 will not drive the spiral feeding rod 83 to rotate.

[0044] like Figure 12-Figure 15As shown, it also includes an automatic unlocking mechanism, which includes an extrusion frame 101, a pressure rod 102 and an extrusion frame 2 103. The extrusion frame 101 is connected to the middle of the top of the U-shaped box 2. The lower left part of the extrusion frame 101 is provided with an inclined surface. The left side of the U-shaped box 2 is connected to the extrusion frame 2 103 above the discharge port 21. The lower part of the extrusion frame 2 103 is also provided with an inclined surface. The top of the sliding block 61 is connected to the pressure rod 102. The extrusion frame 101 and the extrusion frame 2 103 are both located at the moving track of the pressure rod 102, so that the pressure rod 102 can contact the inclined surfaces of the extrusion frame 101 and the extrusion frame 2 103 when moving, thereby being squeezed by the extrusion frame 101 and the extrusion frame 2 103, so that the pressure rod 102 moves downward, thereby driving the sliding block 61 to move downward. The downward movement of the sliding block 61 can drive the clamping plates 63 on both sides to move away from each other through the inclined groove and the convex shaft 631 on it to unlock the circuit board.

[0045] When the sliding block 61 rotates, it can drive the pressure rod 102 to rotate. When the pressure rod 102 rotates to contact the inclined surface of the extrusion frame 101, it will be squeezed by the inclined surface of the extrusion frame 101 and move downward, thereby driving the pressure rod 102 to move downward. When the pressure rod 102 moves downward, it can drive the sliding block 61 connected to it to move downward. When the sliding block 61 moves downward, it can drive the clamping plates 63 on both sides to move away from each other through the inclined groove and the convex shaft 631, thereby automatically controlling the clamping plates 63 on both sides to move away from each other for the convenience of adding circuit boards. As the sliding block 61 continues to drive the pressure rod 102 to rotate, the pressure rod 102 will rotate to contact the inclined surface of the extrusion frame 103, so as to squeeze the pressure rod 102 to move through the inclined surface on the extrusion frame 103, thereby driving the clamping plates 63 on both sides to move away from each other again. At this time, the circuit board is just aligned with the discharge port 21. At this time, the clamping plates 63 on both sides move away from each other, which can unlock the circuit board and reduce the friction of the circuit board when it is pushed out.

[0046] like Fig.15 As shown, a rubber scraper 12 is also included. The top and bottom of the discharge port 21 are connected to the rubber scraper 12. When the circuit board passes through the opening, it will pass through the rubber scraper 12. The rubber scraper 12 can generate friction with the surface of the circuit board to scrape off the etching liquid remaining on the surface of the circuit board.

[0047] like Fig.16As shown, a transmission mechanism is also included, and the transmission mechanism includes a belt transmission group 131, a side frame 132 and a conveying wheel shaft 133. Two side frames 132 are connected to the left side of the U-shaped box 2, and the two side frames 132 are symmetrically arranged front to back. The side frames 132 are located below the discharge port 21. A plurality of conveying wheel shafts 133 for conveying the etched circuit boards are rotatably connected evenly spaced between the two side frames 132. A belt transmission group 131 is provided between the rightmost conveying wheel shaft 133 and the rotating shaft 4, so that the rotation of the rotating shaft 4 can drive the rightmost conveying wheel shaft 133 to rotate through the belt transmission group 131, thereby assisting in conveying the circuit boards.

[0048] When the rotating shaft 4 rotates, the rightmost conveying wheel shaft 133 can be driven to rotate through the belt transmission group 131, and when the circuit board is sent out, it is located at the conveying wheel shaft 133, so that the circuit board is transported through the conveying wheel shaft 133 to avoid the circuit board being blocked at the discharge port 21.

[0049] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. An etching device for circuit board processing, characterized in that: The invention comprises a support leg (1), a U-shaped box (2), a cover plate (22), a driving motor (3), a rotating shaft (4), a rotating ring (5) and a placement mechanism. The support leg (1) is provided with two legs, a U-shaped box (2) is connected between the tops of the two support legs (1), a cover plate (22) is connected to the top of the U-shaped box (2), a driving motor (3) is installed on the U-shaped box (2), a rotating shaft (4) is connected to the output shaft of the driving motor (3), the rotating shaft (4) is rotatably connected to the U-shaped box (2), both sides of the rotating shaft (4) are connected to rotating rings (5), the front end of the rotating shaft (4) passes through the U-shaped box (2) and is flush with the front side of the U-shaped box (2), the interior of the rotating shaft (4) is hollow and the hollow position extends to the front side of the rotating shaft (4), the U-shaped box (2) is provided with a discharge port (21) for removing the etched circuit board, and a placement mechanism for placing the circuit board is provided between the two rotating rings (5).

2. An etching device for circuit board processing as claimed in claim 1, characterized in that: The placement mechanism comprises a supporting plate (51), a guide rod (52), a bidirectional screw rod (53) and a limiting plate (54); a plurality of supporting plates (51) for supporting circuit boards are evenly spaced and connected between the middle parts of the two rotating rings (5); a plurality of guide rods (52) and a plurality of bidirectional screw rods (53) are evenly spaced and connected between the outsides of the two rotating rings (5); the bidirectional screw rods (53) are rotatably connected to the rotating rings (5); the number of the bidirectional screw rods (53) and the guide rods (52) is the same as the number of the supporting plates (51); both sides of the guide rods (52) are slidably connected with limiting plates (54) for limiting the circuit boards; the limiting plates (54) are threadedly matched with the bidirectional screw rods (53).

3. An etching device for circuit board processing as claimed in claim 2, characterized in that: The etching device also includes a clamping mechanism, which includes a sliding block (61), an elastic member (62), a clamping plate (63) and a convex shaft (631); the sliding block (61) is slidably connected to the limit plate (54); the elastic member (62) is connected between the sliding block (61) and the limit plate (54); the clamping plates (63) are slidably connected to both sides of the limit plate (54); the two clamping plates (63) can slide to clamp and fix the circuit board; the clamping plates (63) are connected to the convex shaft (631); the sliding block (61) is provided with oblique grooves on both sides; the convex shaft (631) is located in the oblique grooves and is slidably connected to the oblique grooves.

4. An etching device for circuit board processing as claimed in claim 2, characterized in that: The etching device further comprises a material pushing mechanism, the material pushing mechanism comprising an air pump (71), an air delivery pipe (72), a sleeve (73), a material pushing plate (74), a second elastic member (76) and a mounting frame (75), the air pump (71) being mounted on the U-shaped box (2), the air delivery end of the air pump (71) being connected to the air delivery pipe (72), the air delivery pipe (72) extending into the middle position inside the rotating shaft (4), the mounting frame (75) being connected to the U-shaped box (2), the air delivery pipe (72) being connected to the mounting frame (75), the air outlet end of the air delivery pipe (72) facing the material outlet (21), the air outlet end of the air delivery pipe (72) being in contact with the rotating shaft (4), and the air outlet end of the air delivery pipe (72) being in contact with the rotating shaft (4). ) is fitted to the inner wall of the support plate (51), the rotating shafts (4) are evenly spaced apart with a number of air outlet holes that is the same as the number of the support plate (51), the rotation of the rotating shaft (4) can drive the air outlet holes to rotate until they are fitted to the air outlet end of the air delivery pipe (72), the rotating shaft (4) is evenly spaced apart with a plurality of sleeves (73) connected along the circumferential direction, the number of the sleeves (73) is the same as the number of the air outlet holes and they are connected to the air outlet holes, the sleeves (73) are slidably connected with a push plate (74), the push plate (74) passes through the support plate (51) and is slidably connected to the support plate (51), and an elastic member 2 (76) is connected between the push plate (74) and the rotating shaft (4).

5. An etching device for circuit board processing as claimed in claim 2, characterized in that: The etching device also includes a feeding mechanism, which includes a feeding plate (81), a baffle (82), a spiral feeding rod (83), a second bidirectional screw rod (85) and a sliding frame (86). The top of the U-shaped box (2) is connected to the feeding plate (81), the feeding plate (81) is connected to the baffle (82), a vertical gap is provided between the baffle (82) and the feeding plate (81) for the circuit board to pass through, the baffle (82) is rotatably connected to the second bidirectional screw rod (85), both sides of the second bidirectional screw rod (85) are connected to the sliding frame (86) by threads, the sliding frame (86) is slidably connected to the baffle (82), and the sliding frame (86) is rotatably connected to the spiral feeding rod (83).

6. An etching device for circuit board processing as claimed in claim 5, characterized in that: The etching device also includes a transmission mechanism, which includes a sliding rack (91), a transmission gear (92) and an elastic member three (93). The two sliding frames (86) are both slidably connected with the sliding rack (91). The spiral feeding rod (83) is connected with the transmission gear (92) via a one-way clutch. The sliding rack (91) is meshed with the transmission gear (92). The elastic member three (93) is connected between the sliding rack (91) and the sliding frame (86). The lower part of the sliding rack (91) is provided with an inclined surface, and the inclined surface of the sliding rack (91) is located at the moving track of the limiting plate (54).

7. An etching device for circuit board processing as claimed in claim 3, characterized in that: The etching device also includes an automatic unlocking mechanism, which includes an extrusion frame 1 (101), a pressure rod (102) and an extrusion frame 2 (103). The extrusion frame 1 (101) is connected to the middle of the top of the U-shaped box (2), and the lower part of the extrusion frame 1 (101) is provided with an inclined surface. The left side of the U-shaped box (2) is connected to the position above the discharge port (21), and the lower part of the extrusion frame 2 (103) is also provided with an inclined surface. The top of the sliding block (61) is connected to the pressure rod (102), and the extrusion frame 1 (101) and the extrusion frame 2 (103) are both located at the moving track of the pressure rod (102).

8. An etching device for circuit board processing as claimed in claim 1, characterized in that: The etching device also includes a rubber scraper (12), and the top and bottom of the discharge port (21) are both connected to the rubber scraper (12).

9. An etching device for circuit board processing as claimed in claim 1, characterized in that: The etching device also includes a transmission mechanism, which includes a belt transmission group (131), a side frame (132) and a conveying wheel shaft (133). The U-shaped box (2) is connected to two side frames (132), and the side frames (132) are located below the discharge port (21). A plurality of conveying wheel shafts (133) for conveying etched circuit boards are rotatably connected at even intervals between the two side frames (132), and a belt transmission group (131) is provided between the rightmost conveying wheel shaft (133) and the rotating shaft (4).

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