TWM542317U - Wet chemical processing equipment for printed circuit boards - Google Patents

Description

Printed circuit board wet chemical processing equipment

This novel creation belongs to the field of printed circuit board manufacturing, for example, to a wet chemical processing equipment for printed circuit boards.

The production of printed circuit boards (PCBs) requires many mechanical and chemical processing steps. The chemical processing steps typically involve several different processing steps using different chemicals (for chemical reactions) and water (for washing/removing residual chemicals), which can be performed in either horizontal or vertical mode. Herein, the apparatus for performing such processing is referred to herein as a "wet chemical processing apparatus" and may be provided in a horizontal or vertical form. In the production of a circuit board in the related art, the processing liquid (medicine liquid) is pumped by a pump. However, in the specific use, bubbles are easily generated during pumping, the treatment liquid is easily deteriorated, the pump body is easy to fail, the bearing needs to be replaced frequently, the cost is relatively high, and the shaft and the outer casing also have sealing problems, and a high degree is generated. Noise, equipment consumes a lot of energy and generates a lot of heat. The use of waterjet also has the following disadvantages. Firstly, the waterjet is easy to block, which easily affects the performance of the treatment fluid, and the liquid inlet is only on one side, but the outlet runs through the entire length of the waterjet, the flow uniformity is limited, and the waterjet structure High precision and frequent maintenance, resulting in high application cost, especially for horizontal processing equipment, requiring multiple waterjets with high cost. Operators need to constantly monitor to adjust the performance of the waterjet. Due to the different viscosity of the treatment fluid, it is different. The task requires different waterjet designs, and the water knife dead angle also creates the risk of degradation of the treatment fluid. Poor reliability.

Therefore, PCB manufacturers have long hoped to provide alternatives, but have not been successful. In the related art, it is generally considered that the pump is irreplaceable.

The purpose of the novel creation is to overcome the deficiencies of the above related art, and to provide a wet chemical processing device for a printed circuit board, which has good reliability and low cost. Thus, the novel authoring embodiment can overcome the above limitations with a relatively simple principle: the use of a propeller for conveying liquid and for generating eddy currents. The thruster is a fan-like structure that transfers power by converting rotational motion into thrust. A pressure differential is created between the forward and rearward surfaces of the propeller-shaped blades such that fluid (such as air or water) is accelerated behind the blades.

The novel creation embodiment provides a printed circuit board wet chemical processing apparatus comprising a processing component disposed on a wet chemical processing line of a printed circuit board, wherein the processing component houses at least one of the processing liquid for transporting the processing liquid from the liquid storage tank to the chemical The position of the propeller or at least one agitator for generating a vortex at the aforementioned chemical treatment location.

Optionally, the aforementioned processing component is a horizontal processing tank or a vertical processing tank for wet chemical processing of the printed circuit board.

Optionally, the aforementioned chemical processing location is a wet chemically treated location on the surface of the aforementioned printed circuit board.

The present invention also provides a printed circuit board wet chemical processing apparatus, including a liquid storage tank for containing a processing liquid and a processing tank for accommodating a circuit board, and the aforementioned wet chemical processing equipment for the printed circuit board is also included for processing a pushing device that is pushed from the liquid storage tank to the processing tank, the pushing device includes a propeller and a driver for driving the rotation of the propeller, the propeller has at least two blades, and the propeller is disposed in the liquid storage tank .

Optionally, the aforementioned propeller is a low pressure propeller.

Optionally, the aforementioned driver is coupled to the aforementioned thruster.

Optionally, the liquid storage tank communicates with the processing tank through a communication groove.

Optionally, a transition groove communicating with the liquid storage tank is disposed above the liquid storage tank, and the transition groove has a guiding port leading to the processing tank.

Optionally, the foregoing driver includes a rotating shaft, and the rotating shaft is longitudinally disposed and protrudes into the liquid storage tank and is connected to the propeller.

Optionally, the foregoing driver further includes a first motor for driving the rotation of the rotating shaft, and the first motor is located above the liquid storage tank.

Optionally, a return line is disposed between the processing tank and the liquid storage tank.

Optionally, when the aforementioned printed circuit board wet chemical processing apparatus is placed in an operating state, the liquid storage tank is lower than the processing tank.

Optionally, the processing tank is provided with a stirrer, and the agitator is connected with a driven plate located in the processing tank, and the active groove of the driven disk is disposed outside the processing tank, and the active disk is connected. A driving device for driving the rotation of the aforementioned driving disk. Optionally, the agitator is disposed in the processing tank, the agitator is connected to the driving shaft, and the driving shaft is coupled to the second motor.

The present invention also provides a printed circuit board wet chemical processing apparatus comprising at least one push device disposed on a wet chemical processing line of a printed circuit board, the push device comprising at least one pusher for transporting the treatment liquid to a wet chemical processing position Or including at least one agitator that produces turbulence at the aforementioned wet chemical processing location.

According to the creation embodiment of the present invention, the disadvantages of the pump can be overcome, that is, the treatment liquid is not easy to generate bubbles, the performance of the treatment liquid is not easily deteriorated, and the pump body in contact with the chemical treatment liquid is not required, and the pump body in the related art is avoided. Easy to fail, no need to change bearings frequently, no sealing problems, low noise, low energy consumption, low heat generation, low application cost, no water knife, low application cost, no dead angle, avoiding treatment liquid The problem of degradation and reliability is good, which is beneficial to ensure the production quality and efficiency of the circuit board, and the loss of the treatment liquid is low, and can be applied to the transmission modes such as horizontal and vertical transmission.

1‧‧‧ reservoir

2‧‧‧Processing tank

3‧‧‧ propeller

4‧‧‧ drive

5‧‧‧Connecting slot

6‧‧‧Transition trough

31‧‧‧ blades

41‧‧‧ shaft

42‧‧‧First motor

61‧‧‧ Guide port

92‧‧‧Agitator

93‧‧‧ driven disk

94‧‧‧Active disk

910‧‧‧ slots

911‧‧‧ socket

921‧‧‧Agitator shaft

922‧‧‧Agitating blades

923‧‧‧Drive shaft

924‧‧‧Second motor

941‧‧‧Active shaft

942‧‧‧ bearing

943‧‧‧Rotating wheel

944‧‧‧Drive belt

In order to more clearly illustrate the technical means in the present creative embodiment, the drawings used in the embodiments will be briefly described below, and the drawings in the following description are only some embodiments of the novel creation, here The wet chemical processing apparatus in horizontal mode is shown by way of example only, and other figures may be obtained from those of ordinary skill in the art, which may also include wet chemical treatment in a vertical mode. Icon for the device.

1 is a plan view of a wet chemical processing apparatus for a printed circuit board according to a first embodiment of the present invention. 2 is a schematic partial partial view of a wet chemical processing device for a printed circuit board provided by the second embodiment of the present invention; FIG. 3 is a plan view showing a planar portion of a stirrer in a wet chemical processing device for a printed circuit board according to the second embodiment of the present invention; schematic diagram.

Using the technical means of the novel authoring embodiment, those skilled in the art will appreciate that the thruster can include two, three or even more blades. The form of three of the blades is an optional type described in the specific embodiment, but the type of the blade is also a type that can produce efficacy, and is included in the protection scope of the novel creation embodiment. Inside. Suitable propellers for use in the present creative embodiment are preferred designs based on fluid engineering. In particular, the aforementioned thrusters should be cavitation resistant propellers. Further, the number of the propellers in each of the containers for accommodating the above-described propellers (such as the above-described liquid storage tank), and the number of blades of each propeller, the arrangement manner, the rotational direction, and the like may be determined according to the use environment. (For example, the size parameters such as length, width, depth, volume, and structural strength of the reservoir and/or treatment tank, and other related components, etc.) are determined.

In order to make the objects, technical means and advantages of the present inventions more clearly understood, the present invention will be described with reference to the drawings and embodiments. It is to be understood that the alternative embodiments described herein are merely illustrative of the inventive embodiments and are not intended to limit the inventive embodiments.

It should be noted that when the component is called "fixed to" or "set to" another Elements, which may be directly on another element or may have a centered element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or a central element.

It should also be noted that the left, right, up, down, and other orientation terms in the present creative embodiment are only relative concepts or reference to the normal use state of the product, and should not be considered as restrictive. of. The features of the embodiments and the embodiments may be arbitrarily combined with each other without conflict.

Example

Embodiment 1:

1 is a plan partial schematic view of a wet chemical processing apparatus for a printed circuit board according to a first embodiment of the present invention. Referring to Figure 1, the present creative embodiment provides a printed circuit board wet chemical processing apparatus comprising a processing component (such as the processing tank 2 described above) disposed on a wet chemical processing line of a printed circuit board, the processing component housing at least one of the processing components a propeller for transporting the treatment fluid from a reservoir (such as the reservoir 1 described above) to a chemical treatment location (such as the propeller 3 described above) or at least one agitator for generating a vortex at the aforementioned chemical treatment location (for example, the agitator 92 described above), by causing a pressure difference between the blades 31 of the pusher 3 to cause the treatment liquid to be driven to flow from the reservoir 1 to the treatment tank 2, the treatment liquid is less likely to generate bubbles, and the performance of the treatment liquid It is not easy to deteriorate, no need to use the pump body, avoiding the problem that the pump body in the related art is easy to be broken, and there is no need to change the bearing frequently, there is no sealing problem, the equipment has low noise, low energy consumption, small heat generation, low application cost, and also low cost. There is no need to use a water jet, the application cost is low, there is no dead angle, the problem of degradation of the treatment liquid is avoided, the reliability is good, and the production quality and efficiency of the circuit board are ensured, and low cost.

Optionally, the aforementioned processing component is for wet chemical processing of the printed circuit board Horizontal processing tank or vertical processing tank. That is, if the processing tank 2 is used as the processing component in the present embodiment, the processing tank 2 may be in a horizontal mode, a vertical mode, or even a tilting, and may be selected according to actual conditions.

Optionally, the aforementioned chemical processing location is a wet chemically treated location on the surface of the aforementioned printed circuit board. The wet chemical treatment position may be the treatment tank 2.

Optionally, the agitator 92 is disposed in the treatment tank 2 to effectively slow down the overall flow rate of the liquid medicine, does not bring bubbles into the liquid medicine, effectively prolongs the service life of the liquid medicine, and has low production cost. The drive shaft 923 can be directly connected to the drive shaft 923. The drive shaft 923 can be directly connected to the second motor 924, that is, the agitator 92 is directly driven by the second motor 924 and the drive shaft 923. The driving mode of the agitator 92 can be driven by the driving shaft 923 as shown in FIG. 1 , and can also be driven by a belt, a chain, etc., or can be driven by a magnetic transmission method, as long as the agitator 92 can be driven to rotate. can.

Optionally, the aforementioned driver 4 is connected to the aforementioned propeller 3 and located above the propeller 3.

Optionally, the liquid storage tank 1 communicates with the processing tank 2 through the communication groove 5 . The thruster 3 is disposed longitudinally or laterally to push the treatment liquid upwardly out of the liquid storage tank 1 and enter the treatment tank 2 through the communication tank 5.

Optionally, a top of the liquid storage tank 1 is provided with a transition groove 6 communicating with the liquid storage tank 1, and the transition groove 6 has a guiding port 61 leading to the processing tank 2 to facilitate the circulation of the processing tank 2, The arrow in 1 indicates the flow direction of the treatment liquid.

Optionally, the foregoing driver 4 includes a rotating shaft 41. The rotating shaft 41 is longitudinally disposed and extends into the liquid storage tank 1 and is connected to the propeller 3, and the propeller 3 is longitudinally arranged to be driven. The liquid flows upward into the reservoir 1.

Optionally, the driver 4 also includes a first motor 42 for driving the rotation of the rotating shaft 41. The first motor 42 is located above the liquid storage tank 1. The first motor 42 can be directly connected to the rotating shaft 41, and can also drive the driving belt or the speed reducer to be connected to the rotating shaft 41.

Optionally, a return line is disposed between the processing tank 2 and the liquid storage tank 1 to allow the processing liquid to be recirculated in time.

Optionally, the liquid storage tank 1 is lower than the processing tank 2, and the propeller 3 can push the processing liquid in the liquid storage tank 1 into the processing tank 2.

Alternatively, the pusher 3 may have two or three or more blades 31, preferably two to six blades 31, particularly preferably three or four blades 31, the size of which may be set according to actual conditions. The speed of the pusher 3 can be between 500 and 1500 rpm.

Embodiment 2:

As shown in FIG. 2 and FIG. 3 , a printed circuit board wet chemical processing apparatus provided by the present invention includes a liquid storage tank 1 for containing a processing liquid (medicine liquid) and a processing tank 2 for accommodating a circuit board. The aforementioned printed circuit board wet chemical processing apparatus also includes a pushing device for pushing the processing liquid from the liquid storage tank 1 to the processing tank 2, the pushing device including the propeller 3 and the driver 4 for driving the rotation of the propeller 3 The thruster 3 has at least two blades 31, and the pusher 3 is disposed in the liquid storage tank 1. By driving the pusher 3 to rotate by the driver 4, the pressure difference between the blades 31 of the pusher 3 is generated, so that the processing liquid can be driven to flow from the liquid storage tank 1 to the processing tank 2, and bubbles are not easily generated, and the performance of the processing liquid is not easily deteriorated. No need to use the pump body, avoiding the problem that the pump body in the related art is easy to fail, and there is no need to change the bearing frequently, there is no sealing problem, the equipment has low noise, low energy consumption, small heat generation, low application cost, and no need to adopt water The knife has low application cost, no dead angle, avoids the problem of degradation of the treatment liquid, and has good reliability, which is beneficial to ensure the production quality and efficiency of the circuit board, and has low cost. The wet chemical treatment of the printed circuit board can be set either longitudinally or laterally. A plurality of pushers 3 may be provided in the treatment tank 2 to provide sufficient fluid. The push device can be set horizontally or vertically.

Optionally, the aforementioned propeller 3 is a low pressure propeller and has a long service life.

Optionally, the aforementioned driver 4 is connected to the aforementioned propeller 3 and located above the propeller 3.

Optionally, the liquid storage tank 1 communicates with the processing tank 2 through the communication groove 5 . The thruster 3 is disposed longitudinally or laterally to push the treatment liquid upwardly out of the liquid storage tank 1 and enter the treatment tank 2 through the communication tank 5.

Optionally, a top of the liquid storage tank 1 is provided with a transition groove 6 communicating with the liquid storage tank 1, and the transition groove 6 has a guiding port 61 leading to the processing tank 2 to facilitate the circulation of the processing tank 2, The arrow in 1 indicates the flow direction of the treatment liquid.

Optionally, the foregoing driver 4 includes a rotating shaft 41. The rotating shaft 41 is longitudinally disposed and extends into the liquid storage tank 1 and is connected to the propeller 3, and the propeller 3 is arranged in a longitudinal direction to drive the processing liquid upwardly out of the liquid storage tank 1.

Optionally, the driver 4 also includes a first motor 42 for driving the rotation of the rotating shaft 41. The first motor 42 is located above the liquid storage tank 1. The first motor 42 can be directly connected to the rotating shaft 41, and can also drive the driving belt or the speed reducer to be connected to the rotating shaft 41.

Optionally, a return line is disposed between the processing tank 2 and the liquid storage tank 1 to allow the processing liquid to be recirculated in time.

Optionally, the foregoing liquid storage tank 1 is lower than the foregoing processing tank 2, and the propeller 3 can store liquid The treatment liquid in the tank 1 is pushed into the treatment tank 2.

Alternatively, the pusher 3 may have two or three or more blades 31, preferably two to six blades 31, particularly preferably three or four blades 31, the size of which may be set according to actual conditions. The speed of the pusher 3 can be between 500 and 1500 rpm.

Optionally, the processing tank 2 is provided with an agitator 92, and the agitator 92 is connected with a driven disk 93 located in the processing tank 2. The processing tank 2 is provided with an active external force of the driven disk 93. The disk 94 is connected to the driving disk 94 for driving the driving of the driving disk 94. The driving force between the driving plate 94 and the driven plate 93 is driven by a magnetic force to form a non-contact chemical stirring structure. Without the use of the pump, the rotation of the agitator 92 can effectively slow down the overall flow rate of the liquid medicine. The bubble is brought into the liquid medicine, effectively prolonging the service life of the liquid, the production cost is low, and the quality of the printed circuit board after the treatment is good. The agitator 92 may have two or three or more blades, preferably two to six blades, particularly preferably three or four blades, and the size may be set according to actual conditions.

Optionally, the active disk 94 and the driven disk 93 are disposed on the inner and outer sides of the bottom wall or the side wall of the processing tank 2 and are disposed opposite to each other, and the transmission effect is good. At least one of the active disk 94 and the driven disk 93 is provided. It is made of a magnetic material, such as a magnet, or an electromagnet structure. In the present embodiment, the active disk 94 and the driven disk 93 are both made of a magnet, and the magnets of the opposite ends of the active disk 94 and the driven disk 93 are magnetic. Different; or, as an alternative to magnetic drive.

Alternatively, the aforementioned driven disk 93 is a magnet having a disk shape.

Optionally, the bottom wall of the inside of the processing tank 2 is provided with a disk holder 911 having a circular groove for accommodating the driven disk 93, and the driven disk 93 can be reliably rotated in the processing tank 2.

Optionally, the bottom wall of the outer surface of the processing tank 2 is provided with a slot 910 for mounting the foregoing active disk 94. The driving disk 94 is located below the driven disk 93 and separated by the processing slot 2. Made of magnetically permeable material.

Optionally, the agitator 92 includes a stirring shaft 921 and at least two agitating blades 922 fixedly connected to one end of the agitating shaft 921. The other end of the agitating shaft 921 is fixedly connected to the driven plate 93. The agitating blade 922 can push the drug solution in the axial direction to agitate the drug solution.

Optionally, the driving device comprises a second motor, and the rotating shaft of the second motor is connected to the active disk 94 or connected to the active disk 94 by a driving belt 944.

Optionally, the driving disk 94 is connected to the driving shaft 941. One end of the driving shaft 941 is fixedly connected to the driving disk 94. The other end of the driving shaft 941 is rotatably disposed through the bearing 942. The rotating shaft is fixed in the middle of the driving shaft 941. 943, the foregoing transmission belt 944 is sleeved between the rotating wheel 943 and the rotating shaft of the second motor.

Optionally, the foregoing motor is connected with an FM module to adjust the rotation speed of the motor.

The present invention also provides a printed circuit board wet chemical processing apparatus, comprising at least one pushing device disposed on a wet chemical processing line of a printed circuit board, the pushing device comprising at least one for conveying the processing liquid to the wet chemical processing position The pusher 3, or including at least one agitator 92 that produces a vortex at the aforementioned wet chemical processing position; the aforementioned push device is used to replace the function of the pump. The wet chemical treatment location can be located in the reservoir or in the treatment tank described above. The pushing device is the above pushing device, and the pushing device can be set horizontally or vertically.

The above description is only an optional embodiment of the novel creation, and is not intended to limit the creation of the novel. Any modification, equal replacement or improvement made within the principles of the novel creation should be included in the novel creation. Within the scope of protection.

Industrial utilization

The wet chemical processing equipment of the printed circuit board provided by the novel creation does not need to adopt a pump body, and the equipment has low noise, low energy consumption, small heat generation, and no water knife is needed, the application cost is low, no dead angle exists, and the treatment liquid is prevented from being degraded. The problem is that the reliability is good, which is beneficial to ensure the production quality and efficiency of the circuit board, and the cost is low.

1‧‧‧ reservoir

2‧‧‧Processing tank

3‧‧‧ propeller

4‧‧‧ drive

5‧‧‧Connecting slot

6‧‧‧Transition trough

31‧‧‧ blades

41‧‧‧ shaft

42‧‧‧First motor

61‧‧‧ Guide port

92‧‧‧Agitator

923‧‧‧Drive shaft

924‧‧‧Second motor

Claims (15)

A printed circuit board wet chemical processing apparatus, characterized in that it comprises processing components disposed on a wet chemical processing line of a printed circuit board, wherein the processing component houses at least one for transporting the processing liquid from the liquid storage tank to the chemical treatment The position of the propeller, or at least one agitator for generating turbulence at the aforementioned chemical treatment location. The wet chemical processing apparatus according to claim 1, wherein the processing member is a horizontal processing tank or a vertical processing tank for wet chemical treatment of a printed circuit board. The wet chemical processing apparatus according to claim 1 or 2, wherein the chemical treatment position is a position at which the surface of the printed circuit board is subjected to wet chemical treatment. A printed circuit board wet chemical processing apparatus, characterized in that it comprises a liquid storage tank for accommodating a processing liquid and a processing tank for accommodating a circuit board, and the wet chemical processing equipment of the printed circuit board is also included for storing the processing liquid from the storage The liquid tank is pushed to the pushing device of the processing tank, and the pushing device includes a propeller and a driver for driving the propeller rotation. The propeller has at least two blades, and the propeller is disposed in the liquid storage tank. The printed circuit board wet chemical processing apparatus according to claim 4, wherein the propeller is a low pressure propeller. The printed circuit board wet chemical processing apparatus according to claim 4, wherein the actuator is connected to the pusher. The printed circuit board wet chemical processing apparatus according to claim 4, wherein the liquid storage tank communicates with the processing tank through a communication groove. A printed circuit board wet chemical processing apparatus as recited in claim 4, wherein The upper side of the liquid storage tank is provided with a transition groove communicating with the liquid storage tank, and the transition groove has a guiding port leading to the processing tank. The printed circuit board wet chemical processing apparatus according to any one of claims 4 to 8, wherein the driver comprises a rotating shaft, wherein the rotating shaft is longitudinally disposed and extends into the liquid storage tank and connects the thruster . The printed circuit board wet chemical processing apparatus according to claim 9, wherein the driver system further includes a first motor for driving the rotation of the rotating shaft, and the first motor is located above the liquid storage tank. The printed circuit board wet chemical processing apparatus according to any one of claims 4 to 8, wherein the processing tank and the liquid storage tank are provided with a return line. The printed circuit board wet chemical processing apparatus according to any one of claims 4 to 8, wherein the liquid storage tank is lower than the foregoing treatment when the printed circuit board wet chemical processing apparatus is placed in an operating state. groove. The printed circuit board wet chemical processing apparatus according to any one of claims 4 to 8, wherein the processing tank is provided with a stirrer, and the agitator is connected to a driven disk located in the processing tank. A driving disk for driving the driven disk by magnetic force is disposed outside the processing tank, and the driving disk is connected with a driving device for driving the rotation of the driving disk. The printed circuit board wet chemical processing apparatus according to any one of claims 4 to 8, wherein the processing tank is provided with a stirrer, the agitator is connected to a drive shaft, and the drive shaft is connected to the Two motors. A printed circuit board wet chemical processing apparatus, characterized in that it comprises at least one push device disposed on a wet chemical processing line of a printed circuit board, the push device comprising at least one for processing The liquid is delivered to the propeller at the wet chemical processing location or includes at least one agitator that produces turbulence at the aforementioned wet chemical processing location.