CN112680725B - Control method and control structure for tin-immersion wire prepreg liquid medicine - Google Patents
Control method and control structure for tin-immersion wire prepreg liquid medicine Download PDFInfo
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- CN112680725B CN112680725B CN202011487200.6A CN202011487200A CN112680725B CN 112680725 B CN112680725 B CN 112680725B CN 202011487200 A CN202011487200 A CN 202011487200A CN 112680725 B CN112680725 B CN 112680725B
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Abstract
The invention disclosesA control method and a control structure of tin immersion wire prepreg liquid medicine are provided, and the control method of tin immersion wire prepreg liquid medicine is as follows: the tin immersion line comprises a pre-immersion tank and a tin immersion tank, wherein an adding device for adding liquid medicine and a liquid medicine conveying device for communicating the pre-immersion tank with the tin immersion tank are arranged on the pre-immersion tank, and the production time of the pre-immersion tank is more than or equal to 100m 2 When the height of the liquid medicine in the pre-soaking tank is higher than the preset height, the liquid medicine in the pre-soaking tank is conveyed into the tin immersion tank through the liquid medicine conveying device, so that the height of the liquid medicine in the pre-soaking tank is lower than the preset height; and the pre-soaking tank is also provided with a filtering device for circulating the liquid medicine in the filtering tank. According to the tin immersion tank, the liquid medicine at the position higher than the preset liquid level in the pre-immersion tank is conveyed to the tin immersion tank through the arranged liquid medicine conveying device, so that the liquid medicine in the pre-immersion tank is updated and the liquid medicine in the tin immersion tank is added at the same time.
Description
Technical Field
The invention relates to the technical field of printed circuit board manufacturing, in particular to a control method and a control structure of tin-immersed wire prepreg liquid medicine.
Background
In the chemical tin deposition production process of the printed circuit board, different liquid medicines are required to be matched with different devices, and the existing tin deposition device has normal production but still has larger improvement space. With present preimpregnation groove, there is liquid medicine more the groove cycle short at present, and the filter bag blocks up seriously, leads to the circulation pumping to spout and presses the undersize, can appear in serious time that the water bed liquid level is not enough, leads to the phenomenon that the face leaks to plate.
The existing tin deposition equipment has the following defects:
1. because of the characteristic of the tin precipitation liquid medicine, the content of tetravalent tin in the liquid medicine is increased along with the increase of the slotting time, and because the liquid medicine can not be updated in time, a large amount of tetravalent tin can be crystallized and separated out on the heating coil, the bottom of the tank and the upper surface of the filter bag. Because the filter bag adopted in the existing filtration is used for filtration, a large amount of crystals can block the filter bag hole, so that liquid medicine cannot pass through, the liquid level of a water bed is insufficient, and the risk of plating leakage is caused;
2. as for the tin precipitation crystallization, the ideal treatment method is to dissolve the tin precipitation crystallization by alkali washing, wash the tin precipitation crystallization with acid after the tin precipitation crystallization is drained, and then open the cylinder again after the washing with acid and water, a large amount of on-site working hours can be consumed for one-time treatment, and the productivity is insufficient.
3. There is not the intercommunicating relationship between prepreg tank and the heavy tin bath between the two, adopts the different bucket that adds to add liquid medicine to both to can not compromise liquid medicine interpolation between them simultaneously.
Disclosure of Invention
The invention aims to overcome the technical defects in the prior art and provides a tin immersion wire prepreg liquid medicine control method.
In order to solve the technical problem, the invention provides a tin immersion wire prepreg liquid medicine control method, wherein a prepreg tank and a tin immersion tank are arranged on a tin immersion wire, an adding device for adding liquid medicine and a liquid medicine conveying device for communicating the prepreg tank with the tin immersion tank are arranged on the prepreg tank, and each production time on the prepreg tank is more than or equal to 100m 2 When the height of the liquid medicine in the pre-soaking tank is higher than the preset height, the liquid medicine in the pre-soaking tank is conveyed into the tin immersion tank through the liquid medicine conveying device, so that the height of the liquid medicine in the pre-soaking tank is lower than the preset height; and the pre-soaking tank is also provided with a filtering device for circulating the liquid medicine in the filtering tank.
Furthermore, a water level sensor is arranged at a preset height in the pre-soaking tank.
Further, the liquid medicine conveying device is a pneumatic pump.
Furthermore, the filtering device can continuously perform circulating filtration on the liquid medicine in the processing process of the production plate.
Furthermore, the filter device is a cotton core filter device, and the liquid medicine is filtered by using cotton cores in the cotton core filter device.
Further, the cotton core is replaced once a week.
Still provide a heavy tin wire preimpregnation liquid medicine management and control structure, including preimpregnation groove and heavy tin bath on heavy tin wire, be equipped with the interpolation device that is used for adding liquid medicine on the preimpregnation groove and be used for carrying the liquid medicine in the preimpregnation groove to the liquid medicine conveyor who sinks the tin bath, still be equipped with the filter equipment who is used for circulating filtration inslot liquid medicine on the preimpregnation groove.
Furthermore, a water level sensor for detecting the height of the liquid medicine is arranged in the pre-soaking tank.
Further, the liquid medicine conveying device is a pneumatic pump.
Further, the filter device is a cotton core filter device.
Compared with the prior art, the invention has the following beneficial effects:
in the invention, the production square number (specifically, more than or equal to 100 m) of the production plate is determined according to the production square number of the production plate 2 ) The liquid medicine is limited to be added into the pre-dipping tank, so that the problem of plate surface plating leakage caused by insufficient liquid level of a water bed in the tank can be avoided, in addition, in the process of continuously adding the liquid medicine into the pre-dipping tank, the purpose of avoiding overflow and achieving continuous updating of liquid in the tank is achieved, the liquid medicine at the position higher than the preset liquid level in the pre-dipping tank is conveyed into the tin dipping tank through the arranged liquid medicine conveying device, so that the liquid medicine is continuously discharged out in the process of continuously adding the liquid medicine, the original liquid medicine adding amount added into the tin dipping tank is changed into the liquid medicine adding amount conveyed and added into the tin dipping tank by the pre-dipping tank, the updating speed and the updating amount of the liquid medicine in the pre-dipping tank are ensured, the updating of the liquid medicine in the pre-dipping tank and the adding of the liquid medicine in the tin dipping tank are simultaneously realized, the content of tetravalent tin can be effectively reduced, and the problem of pipeline blockage is reduced; the filter bag in the pre-soaking tank is changed into a cotton core filter device, the cotton core in the cotton core filter device is used for filtering the liquid medicine, tetravalent tin precipitation in the liquid medicine can be effectively filtered, tetravalent tin in the liquid medicine is further reduced, the tetravalent tin in the tank liquor is maintained at a lower level, the problems that tetravalent tin is crystallized and separated out on a heating coil and the bottom of the tank and pipeline blockage is reduced are avoided, the service life of the tank liquor is prolonged, and the working hours consumed in replacing and washing the tank at ordinary times are reduced; also maintaining filtration by replacing the cotton core for filtration once a weekValidity, the stability of the water bed is guaranteed, the phenomenon of plating leakage is prevented, and the stability of product quality is guaranteed.
Drawings
FIG. 1 is a front view of a solder wire prepreg liquid management structure in an embodiment;
fig. 2 is a top view of an embodiment of a solder wire prepreg liquid management structure.
Detailed Description
In order to more fully understand the technical contents of the present invention, the technical solutions of the present invention will be further described and explained with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1-2, the immersion tin wire prepreg liquid medicine management and control structure shown in this embodiment includes a prepreg tank 1 and a prepreg tank 2 on the immersion tin wire, an adding device 3 for adding liquid medicine to the prepreg tank 1 and a liquid medicine conveying device 4 for conveying the liquid medicine in the prepreg tank 1 to the prepreg tank 2 are disposed on the prepreg tank 1, an input end of the liquid medicine conveying device 4 is provided with an input pipe 41 extending into the prepreg tank 1, an output end of the liquid medicine conveying device 4 is provided with an output pipe 42 extending into the prepreg tank 2, and the prepreg tank 1 is further provided with a filtering device 5 for circularly filtering the liquid medicine in the tank; in the in-service use, carry the tin bath through the liquid medicine conveyor who sets up in with the preimpregnation tank well-out liquid medicine of presetting the liquid level height department, thereby constantly add the in-process of liquid medicine and also constantly discharge outward, change the liquid medicine addition volume that originally adds to the tin bath into the preimpregnation tank and carry the interpolation to it, with the renewal speed and the renewal volume of guaranteeing the preimpregnation tank bath liquid, thereby realize the renewal of preimpregnation tank liquid medicine and the interpolation of tin bath liquid medicine simultaneously, still can effectively reduce the content of tetravalent tin, the problem of pipe blockage appears in the reduction.
Specifically, be equipped with water level sensor 6 that is used for detecting the liquid medicine height in preimpregnation tank 1, this water level sensor 6 sets up the predetermined liquid level height department at the inslot, the position of the mouth of pipe that makes input tube 41 in preimpregnation tank is less than water level sensor 6's height, when utilizing the continuous liquid medicine that adds to preimpregnation tank of interpolation device, highly reach water level sensor's position department when the inslot liquid level by it sense, at this moment control liquid medicine conveyor 4 carries the liquid medicine in the preimpregnation tank to tin bath, when liquid medicine in preimpregnation tank highly is less than water level sensor, water level sensor can not respond to liquid medicine and close liquid medicine conveyor 4 promptly, stop the transport of liquid medicine, thereby realize automatic control's purpose.
Specifically, the liquid medicine delivery device 4 is a pneumatic pump.
Specifically, the filter device 5 is a cotton core filter device, and the cotton core in the cotton core filter device is used for filtering the liquid medicine, so that tetravalent tin precipitates in the liquid medicine can be effectively filtered, tetravalent tin in the liquid medicine is further reduced, the tetravalent tin in the tank liquor is maintained at a lower level, the problems that tetravalent tin is crystallized and separated out on a heating coil and the bottom of a tank and a pipeline is blocked are avoided, the service life of the tank liquor is prolonged, and the working hours consumed in replacing and washing the tank at ordinary times are reduced; the cotton core can be replaced to keep the filtering effectiveness, so that the stability of the water bed is ensured, the phenomenon of plating leakage is prevented, and the stability of the product quality is ensured.
In other embodiments, the liquid medicine delivery device can also be a water pump or other delivery equipment capable of realizing the same function.
In other embodiments, the adding device is an adding barrel.
Example 2
As shown in fig. 1-2, in the method for managing and controlling solder dip wire prepreg liquid medicine in this embodiment, the structure for managing and controlling solder dip wire prepreg liquid medicine in embodiment 1 is used for management and control, and specifically: including on sinking tin wire preimpregnation groove 1 and heavy tin bath 2, be equipped with on preimpregnation groove 1 and be used for adding the interpolation device 3 of liquid medicine and intercommunication preimpregnation groove 1 and the liquid medicine conveyor 4 who sinks tin bath 2, the input of this liquid medicine conveyor 4 is equipped with the input tube 41 that extends into in preimpregnation groove 1, the output of liquid medicine conveyor 4 is equipped with the output tube 42 that extends into in sinking tin bath 2, every production is more than or equal to 100m on preimpregnation groove 1 2 When the production board, through adding device 3 to adding liquid medicine once in preimpregnation groove 1 promptly, the volume of adding liquid medicine at every turn sets for according to the actual production needs be before production promptly to automatic interpolation in the production process, when liquid medicine in preimpregnation groove 1 highly is higher than predetermined height, carry the dress through liquid medicine4, conveying the liquid medicine in the pre-soaking tank 1 to the tin precipitation tank 2, so that the height of the liquid medicine in the pre-soaking tank 1 is lower than a preset height; still be equipped with the filter equipment 5 that is used for circulating filtration inslot liquid medicine on the preimpregnation groove 1, this filter equipment is in production board course of working incessantly to liquid medicine carry out loop filter always.
It is specific, the department of predetermineeing height in preimpregnation groove 1 is equipped with level sensor 6, make the position of the mouth of pipe of input tube 41 in the preimpregnation groove be less than level sensor 6's height, when utilizing the continuous interpolation device to add liquid medicine to the preimpregnation inslot, highly being sensed by it when reaching level sensor's position department when the inslot liquid level, at this moment control liquid medicine conveyor 4 carries the liquid medicine in the preimpregnation inslot to the tin immersion tank in, when liquid medicine height in the preimpregnation inslot is less than level sensor, level sensor can not respond to liquid medicine and close liquid medicine conveyor 4 promptly, stop the transport of liquid medicine, thereby realize automatic control's purpose.
Specifically, the liquid medicine delivery device 4 is a pneumatic pump.
Specifically, the filter device is a cotton core filter device, the cotton core in the cotton core filter device is used for filtering the liquid medicine, tetravalent tin precipitates in the liquid medicine can be effectively filtered, tetravalent tin in the liquid medicine is further reduced, the tetravalent tin in the tank liquid is kept at a low level, the tetravalent tin is prevented from being crystallized and separated out on the heating coil and the bottom of the tank, the problem of pipeline blockage is solved, the service life of the tank liquid is prolonged, and the working hours consumed in replacing and washing the tank at ordinary times are reduced; and the cotton core is replaced once by replacing the cotton core for one week, so that the filtering effectiveness is maintained, the stability of the water bed is ensured, the phenomenon of plating leakage is prevented, and the stability of the product quality is ensured.
In other embodiments, the liquid medicine delivery device can also be a water pump or other delivery equipment capable of realizing the same function.
In other embodiments, the adding device is an adding barrel.
The technical solutions provided by the embodiments of the present invention are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present invention, and the descriptions of the embodiments above are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.
Claims (9)
1. The tin immersion wire prepreg liquid medicine control method is characterized in that a prepreg tank and a tin immersion tank are arranged on a tin immersion wire, an adding device for adding liquid medicine and a liquid medicine conveying device communicated with the prepreg tank and the tin immersion tank are arranged on the prepreg tank, and each production time on the prepreg tank is more than or equal to 100m 2 When the height of the liquid medicine in the pre-soaking tank is higher than the preset height, the liquid medicine in the pre-soaking tank is conveyed into the tin immersion tank through the liquid medicine conveying device, so that the height of the liquid medicine in the pre-soaking tank is lower than the preset height; and the pre-soaking tank is also provided with a filtering device for circulating the liquid medicine in the filtering tank.
2. The tinned wire prepreg liquid medicine management and control method according to claim 1, wherein a water level sensor is arranged at a preset height in the prepreg tank.
3. The tinning wire prepreg liquid medicine management and control method according to claim 1, wherein the liquid medicine conveying device is a pneumatic pump.
4. The tinned wire prepreg control method according to claim 1, wherein the filter device is used for continuously and circularly filtering the prepreg during the plate production process.
5. The method for managing and controlling the solder sink wire prepreg liquid medicine according to claim 1, wherein the filter device is a cotton core filter device, and the liquid medicine is filtered by using a cotton core in the cotton core filter device.
6. The method for managing and controlling prepreg liquid medicine with tin immersion wires according to claim 5, wherein the cotton cores are replaced once a week.
7. A tin immersion wire preimpregnation liquid medicine management and control structure is characterized in that a tin immersion wire comprises a preimpregnation groove and a tin immersion groove, wherein an adding device used for adding liquid medicine and a liquid medicine conveying device used for conveying the liquid medicine in the preimpregnation groove to the tin immersion groove are arranged on the preimpregnation groove, a filtering device used for circularly filtering the liquid medicine in the tin immersion groove is further arranged on the preimpregnation groove, and a water level sensor used for detecting the height of the liquid medicine is arranged in the preimpregnation groove; when the height of the liquid medicine in the pre-soaking tank is higher than the preset height, the liquid medicine in the pre-soaking tank is conveyed to the tin precipitation tank through the liquid medicine conveying device, so that the height of the liquid medicine in the pre-soaking tank is lower than the preset height.
8. The tinned wire prepreg liquid medicine management and control structure of claim 7, wherein the liquid medicine conveying device is a pneumatic pump.
9. The tinned wire prepreg liquid medicine management and control structure of claim 7, wherein the filter device is a cotton core filter device.
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| CN202011487200.6A CN112680725B (en) | 2020-12-16 | 2020-12-16 | Control method and control structure for tin-immersion wire prepreg liquid medicine |
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| CN112680725B true CN112680725B (en) | 2022-12-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100393906C (en) * | 2004-05-27 | 2008-06-11 | 国芳电子股份有限公司 | Tin immersion plating technique |
| CN201793799U (en) * | 2010-08-19 | 2011-04-13 | 宝山钢铁股份有限公司 | Device for relieving generation of tin sludge in tin-plating solution |
| JP2015048491A (en) * | 2013-08-30 | 2015-03-16 | 株式会社デンソー | Method and apparatus of producing composite material |
| CN103966838B (en) * | 2014-05-07 | 2015-11-25 | 北川天讯新材料有限公司 | A kind of flexible fabric vertical roll that is used for is around continuous chemical silver-coating method and device |
| KR101696796B1 (en) * | 2014-12-10 | 2017-01-16 | 주식회사피엔티 | A method for plating copper alloy with tin |
| CN108990301A (en) * | 2018-05-10 | 2018-12-11 | 昆山市正大电路板有限公司 | A kind of PCB printed circuit board production and processing method |
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