Circuit board etching equipment with recyclable liquid medicine

Abstract

The circuit board etching equipment comprises an etching box, a conveying device and a recycling pool, openings are symmetrically formed in the two sides of the etching box, a plurality of spraying nozzles are arranged on the inner wall of the etching box and connected to the top wall of the etching box, a liquid outlet box is arranged on the upper portion of the etching box, and a liquid outlet is formed in the lower portion of the etching box. And the plurality of spraying nozzles are communicated with the liquid outlet box. The conveying device is arranged in the etching box in a penetrating mode through the opening, the two ends of the conveying device extend out of the opening, the conveying device comprises a plurality of rollers, the rollers rotate to drive the circuit board to do linear motion in the length direction of the conveying device, the spraying nozzles are all located over the rollers, and a clearance position is formed between every two rollers. Therefore, the etching liquid flows down. The recycling pool is arranged in the etching box and located below the clearance position, the recycling pool comprises a flow guide groove and a recycling box, the flow guide groove is conical, the narrow end of the cone is communicated with the recycling box, and the recycling pool is communicated with the liquid outlet box through a guide pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing equipment, in particular to a circuit board etching equipment with circulatory chemical solution. Background Art

[0002] Printed circuit boards are used to connect various electronic components in electronic products. The use of printed circuit boards can greatly reduce wiring and assembly errors, improve the level of automation and production labor. Etching equipment is used in the automated production of circuit boards. The circuit board enters the etching equipment under the drive of the conveyor. A spray nozzle is set in the etching equipment to spray etching liquid. The etching liquid contacts the surface of the circuit board to produce a chemical reaction, thereby completing the manufacture of the circuit board. In the related art, the etching liquid remaining after the etching process of a single circuit board is completed still contains a large amount of effective substances, which can be used for recycling and secondary use, but manual recycling adds extra labor costs, and the etching liquid contains acidic and harmful substances. There are certain safety hazards in the recycling process, which is not conducive to production. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a circuit board etching device with a circulated chemical solution, which can automatically complete the etching of the circuit board and the recycling of the etching solution, so as to improve the utilization rate of the etching solution and reduce the labor cost and safety hazards caused by the recycling of the etching solution.

[0004] According to the first aspect of the utility model, a circuit board etching device with liquid circulation includes an etching box, a conveying device and a recovery pool. The two sides of the etching box are symmetrically arranged at the opening. The inner wall of the etching box is provided with a plurality of spray nozzles, and the plurality of spray nozzles are connected to the top wall of the etching box. The upper part of the etching box is provided with a liquid outlet box, and the plurality of spray nozzles are connected to the liquid outlet box. The conveying device is arranged in the etching box through the opening, and both ends of the conveying device extend out of the opening. The conveying device includes a plurality of rollers, and the plurality of rollers rotate to drive the circuit board to move linearly along the length direction of the conveying device. The plurality of spray nozzles are located directly above the rollers, and there is an avoidance position between the two rollers to accommodate the etching liquid flowing down. The recovery pool is arranged in the etching box and below the avoidance position. The recovery pool includes a guide groove and a recovery box. The guide groove is conical, and the narrow end of the cone is connected to the recovery box. The recovery pool is connected to the liquid outlet box through a conduit.

[0005] The circuit board etching equipment with liquid circulation according to the embodiment of the utility model has at least the following beneficial effects: the circuit board is placed on the conveying device, and as the roller rotates, it is driven into the etching box, and the spray nozzle starts to spray the etching liquid, so that the etching liquid fully contacts with the surface of the circuit board and reacts chemically, and after the etching is completed, the circuit board is driven out of the etching box by the conveying device. During etching, the etching liquid, due to its own gravity, passes through the inner wall or the avoidance position of the etching box, and is collected in the recovery pool located below, and then enters the recovery box, and enters the liquid outlet box again through the conduit for recycling and reuse, so as to make full use of the effective chemical substances in the etching liquid and improve the utilization rate of the etching liquid. In addition, the etching liquid is recovered during the etching process, without the need for additional labor costs, and the workers will not come into direct contact with the etching liquid, which reduces safety hazards.

[0006] According to some embodiments of the utility model, a liquid replenishing tank is connected to the side of the etching box, and the liquid replenishing tank is connected to the liquid outlet tank through a conduit to replenish new etching liquid.

[0007] According to some embodiments of the utility model, the etching box is further provided with a control device, a solenoid valve is provided between the etching box and the liquid replenishing tank, and the control device is electrically connected to the solenoid valve.

[0008] According to some embodiments of the utility model, the recovery box is provided with a concentration detector, and the concentration detector is electrically connected to the control device. When the etching liquid concentration in the recovery box is lower than a rated value, the control device controls the solenoid valve to open.

[0009] According to some embodiments of the present invention, the plurality of spray nozzles are all arranged obliquely or vertically toward the center line of the etching box.

[0010] According to some embodiments of the utility model, the conveying device includes a driving member, a driving shaft and multiple driven shafts, the rollers are arranged at intervals on the driven shafts, multiple driven shafts are connected to the driving shaft, and the driving member is connected to and drives the driving shaft to drive the rollers to rotate.

[0011] According to some embodiments of the utility model, the driving member includes a motor, a driving wheel, a driven wheel and a transmission belt, the driving wheel is connected to the output end of the motor, the driven wheel is connected to the driving shaft, the driving wheel and the driven wheel are arranged parallel to the axial direction of the driving shaft, and the driving wheel and the driven wheel are connected by the transmission belt sleeved on the outside.

[0012] According to some embodiments of the utility model, the driven shaft is arranged orthogonally to the driving shaft, a plurality of driving magnetic wheels are fixedly connected to the outer wall of the driving shaft, the driving magnetic wheel is arranged concentrically with the driving shaft, a driven magnetic wheel is fixedly connected to one end of the driven shaft close to the driving magnetic wheel, and the driven magnetic wheel is arranged concentrically with the driven shaft.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0015] Figure 1 A schematic diagram of a circuit board etching device with circulated liquid according to an embodiment of the utility model;

[0016] Figure 2 It is a partial schematic diagram of the conveying device of the circuit board etching equipment with circulating chemical solution according to an embodiment of the utility model.

[0017] Figure numerals: conveying device 100; roller 110; avoidance position 111; driving member 120; motor 121; driving wheel 122; driven wheel 123; transmission belt 124; driving shaft 130; driving magnetic wheel 131; driven shaft 140; driven magnetic wheel 141; etching box 200; spray nozzle 201; liquid outlet box 210; recovery pool 220; guide groove 221; recovery box 222; concentration detector 223; liquid replenishing tank 230; catheter 240. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0022] Etching equipment is used in the automated production of circuit boards. The circuit boards are driven into the etching equipment by a conveyor. A spray nozzle is set in the etching equipment to spray out etching liquid. The etching liquid contacts the surface of the circuit board to react chemically, thus completing the manufacture of the circuit board. In the related art, the remaining etching liquid after a single circuit board is etched still contains a large amount of effective substances, which can be recycled for secondary use. However, manual recycling increases labor costs, and the etching liquid contains acidic and harmful substances. There are certain safety hazards in the recycling process, which is not conducive to production.

[0023] For this purpose, refer to Figure 1The utility model provides a circuit board etching device with liquid circulation, including an etching box 200, a conveyor 100 and a recovery pool 220. The two sides of the etching box 200 are symmetrically arranged at the opening. The inner wall of the etching box 200 is provided with a plurality of spray nozzles 201, and the plurality of spray nozzles 201 are connected to the top wall of the etching box 200. The upper part of the etching box 200 is provided with a liquid outlet box 210, and the plurality of spray nozzles 201 are all connected to the liquid outlet box 210. The conveyor 100 is arranged in the etching box 200 through the opening, and both ends of the conveyor 100 extend out of the opening. The conveyor 100 includes a plurality of rollers 110, and the plurality of rollers 110 rotate to drive the circuit board to make a linear motion along the length direction of the conveyor 100. The plurality of spray nozzles 201 are all located directly above the rollers 110, and there is a clearance 111 between the rollers 110 to accommodate the etching liquid flowing down. The recovery pool 220 is arranged in the etching box 200 and is located below the avoidance position 111. The recovery pool 220 includes a guide groove 221 and a recovery box 222. The guide groove 221 is conical, and the narrow end of the cone is connected to the recovery box 222. The recovery pool 220 is connected to the liquid outlet box 210 through the conduit 240. It can be understood that the circuit board is placed on the conveying device 100, and as the roller 110 rotates, it is driven into the etching box 200, and the spray nozzle 201 starts to spray the etching liquid, so that the etching liquid fully contacts the surface of the circuit board and reacts chemically. After the etching is completed, the circuit board is driven by the conveying device 100 to leave the etching box 200. During etching, the etching liquid, due to its own gravity, passes through the inner wall of the etching box 200 or the avoidance position 111, and is collected in the recovery pool 220 located below, and then enters the recovery box 222, and enters the liquid outlet box 210 again through the conduit 240, and is recycled and reused, making full use of the effective chemical substances in the etching liquid and improving the utilization rate of the etching liquid. In addition, the etching liquid can be recovered during the etching process without any additional labor cost, and the workers will not come into direct contact with the etching liquid, thus reducing safety hazards.

[0024] Reference Figure 1 It can be understood that the side of the etching box 200 is connected to a replenishing tank 230, and the replenishing tank 230 is connected to the liquid outlet tank 210 through a conduit 240 to replenish new etching liquid. The etching box 200 is also provided with a control device, and an electromagnetic valve is provided between the etching box 200 and the replenishing tank 230, and the control device is electrically connected to the electromagnetic valve. The recovery box 222 is provided with a concentration detector 223, and the concentration detector 223 is electrically connected to the control device. When the etching liquid concentration in the recovery box 222 is lower than the rated value, the control device controls the electromagnetic valve to open. The etching liquid concentration in the recovery box 222 is obtained through the concentration detector 223, and then the controller controls the replenishing tank 230 to replenish the etching liquid stock solution to ensure that the etching liquid concentration sprayed from the spray nozzle 201 meets the standard, thereby ensuring the etching processing effect and optimizing the use.

[0025] Reference Figure 1 The multiple spray nozzles 201 are all inclined or vertically arranged toward the center line direction of the etching box 200 to maximize the contact between the etching liquid and the circuit board and improve the etching effect and efficiency.

[0026] Reference Figure 1 and Figure 2 The conveying device 100 includes a driving member 120, a driving shaft 130 and a plurality of driven shafts 140. The rollers 110 are arranged at intervals on the driven shafts 140. The plurality of driven shafts 140 are connected to the driving shaft 130. The driving member 120 is connected to and drives the driving shaft 130 to drive the rollers 110 to rotate. The driving member 120 includes a motor 121, a driving wheel 122, a driven wheel 123 and a transmission belt 124. The driving wheel 122 is connected to the output end of the motor 121, and the driven wheel 123 is connected to the driving shaft 130. The driving wheel 122 and the driven wheel 123 are arranged parallel to the axial direction of the driving shaft 130, and the driving wheel 122 and the driven wheel 123 are connected by a transmission belt 124 sleeved on the outside. The motor 121 drives the driving wheel 122 to rotate, and the driving wheel 122 drives the driven wheel 123 to rotate through the transmission belt 124, thereby driving the driving shaft 130 to rotate. Since the driving wheel 122 and the driven wheel 123 are arranged parallel to the axial direction of the driving shaft 130 and connected by the transmission belt 124, the driving wheel 122 and the driven wheel 123 rotate non-coaxially, which can improve the controllability of the rotation speed of the driving shaft 130, thereby improving the reliability of the transmission. The motor 121 can be a servo motor 121, a reduction motor 121 or a synchronous motor 121, etc., as long as it can drive the driving wheel 122 to rotate.

[0027] Reference Figure 2 The driven shaft 140 is arranged orthogonally to the driving shaft 130, and a plurality of driving magnetic wheels 131 are fixedly connected to the outer wall of the driving shaft 130, and the driving magnetic wheel 131 is concentrically arranged with the driving shaft 130. One end of the driven shaft 140 close to the driving magnetic wheel 131 is fixedly connected to the driven magnetic wheel 141, and the driven magnetic wheel 141 is concentrically arranged with the driven shaft 140. The rotation of the driving shaft 130 drives the driving magnetic wheel 131 to rotate. The driving magnetic wheel 131 and the driven magnetic wheel 141 are acted upon by magnetic force and inertia, so that the driven magnetic wheel 141 also rotates with the driving magnetic wheel 131, thereby driving the multiple driven shafts 140 to rotate synchronously, thereby causing the circuit boards on the driven shafts 140 to be transported in a direction. Since the driving magnetic wheel 131 and the driven magnetic wheel 141 are not in contact with each other, no friction occurs during the rotation process, thereby reducing wear and tear to extend the service life of the weighing transmission device and reduce operating noise. In addition, by using a driving shaft 130 to simultaneously drive the multiple driven shafts 140 to rotate synchronously, the stability of the synchronous rotation of the driven shafts 140 can be improved, thereby reducing the possibility of displacement or wear of the circuit boards due to the asynchronous rotation of the driven shafts 140.

[0028] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A circuit board etching device with circulated chemical solution, characterized in that: include: An etching box, with two sides symmetrically arranged at the opening, a plurality of spray nozzles are arranged on the inner wall of the etching box, the plurality of spray nozzles are connected to the top wall of the etching box, and a liquid outlet box is arranged on the upper part of the etching box, and the plurality of spray nozzles are connected to the liquid outlet box; A conveying device is arranged in the etching box through the opening, and both ends of the conveying device extend out of the opening. The conveying device includes a plurality of rollers, and the plurality of rollers rotate to drive the circuit board to move linearly along the length direction of the conveying device. The plurality of spray nozzles are located directly above the rollers, and there is a space between the rollers to accommodate the etching liquid to flow down. The recovery pool is arranged in the etching box and is located below the avoidance position. The recovery pool includes a guide groove and a recovery box. The guide groove is conical, and the narrow end of the cone is connected to the recovery box. The recovery pool is connected to the liquid outlet box through a conduit.

2. The circuit board etching equipment with circulated chemical solution according to claim 1, characterized in that: The side of the etching box is connected with a liquid replenishing box, and the liquid replenishing box is connected to the liquid outlet box through a conduit to replenish new etching liquid.

3. The circuit board etching equipment with circulated chemical solution according to claim 2, characterized in that: The etching box is further provided with a control device, an electromagnetic valve is provided between the etching box and the liquid replenishing tank, and the control device is electrically connected to the electromagnetic valve.

4. The circuit board etching equipment with circulated chemical solution according to claim 3, characterized in that: The recovery box is provided with a concentration detector, and the concentration detector is electrically connected to the control device. When the etching solution concentration in the recovery box is lower than a rated value, the control device controls the solenoid valve to open.

5. The circuit board etching equipment with circulated chemical solution according to claim 1, characterized in that: The plurality of spray nozzles are all arranged obliquely or vertically toward the center line direction of the etching box.

6. The circuit board etching equipment with circulated chemical solution according to claim 1, characterized in that: The transmission device includes a driving member, a driving shaft and a plurality of driven shafts, the rollers are arranged at intervals on the driven shafts, the plurality of driven shafts are connected to the driving shaft, and the driving member is connected to and drives the driving shaft to drive the rollers to rotate.

7. The circuit board etching equipment with circulated chemical solution according to claim 6, characterized in that: The driving member includes a motor, a driving wheel, a driven wheel and a transmission belt, the driving wheel is connected to the output end of the motor, the driven wheel is connected to the driving shaft, the driving wheel and the driven wheel are arranged parallel to the axial direction of the driving shaft, and the driving wheel and the driven wheel are connected by the transmission belt sleeved on the outside.

8. The circuit board etching equipment with circulated chemical solution according to claim 7, characterized in that: The driven shaft is arranged orthogonally to the driving shaft, a plurality of driving magnetic wheels are fixedly connected to the outer wall of the driving shaft, the driving magnetic wheel is arranged concentrically with the driving shaft, a driven magnetic wheel is fixedly connected to one end of the driven shaft close to the driving magnetic wheel, and the driven magnetic wheel is arranged concentrically with the driven shaft.

Images