阅读说明：本技术 一种沉锡线预浸药水管控方法及管控结构 (Control method and control structure for tin-immersion wire prepreg liquid medicine ) 是由 孙全 孙淼 肖德东 曲媛 于 2020-12-16 设计创作，主要内容包括：本发明公开了一种沉锡线预浸药水管控方法及管控结构,所述沉锡线预浸药水管控方法为：在沉锡线上包括预浸槽和沉锡槽,所述预浸槽上设有用于添加药水的添加装置以及连通所述预浸槽和沉锡槽的药水输送装置,在所述预浸槽上每生产≥100m～2的生产板时,通过所述添加装置向所述预浸槽添加药水,当所述预浸槽内的药水高度高于预设的高度时,通过所述药水输送装置将预浸槽内的药水输送至所述沉锡槽中,使预浸槽内的药水高度低于预设的高度；所述预浸槽上还设有用于循环过滤槽内药水的过滤装置。本发明通过设置的药水输送装置将预浸槽中高出预设液位高度处的药水输送到沉锡槽中,从而同时实现预浸槽药水的更新和沉锡槽药水的添加。(The invention discloses a control method and a control structure for tin immersion wire prepreg liquid medicine, wherein the control method for the tin immersion wire prepreg liquid medicine comprises the following steps: 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. The invention presets the height of the presoaking tank to be higher than the preset height through the arranged liquid medicine conveying deviceThe liquid medicine at the liquid level height is conveyed to the tin immersion tank, so that the liquid medicine in the pre-immersion tank is updated and the liquid medicine in the tin immersion tank is added.)

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 100m²When 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 method for managing and controlling prepreg liquid medicine of tin immersion wires according to claim 1, wherein the filtering device is used for continuously and circularly filtering the liquid medicine during the processing of the production board.

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. The utility model provides an it soaks liquid medicine management and control structure to sink tin line preimpregnate, its characterized in that includes the preimpregnation tank and sinks the tin bath on sinking the tin line, be equipped with the interpolation device that is used for adding liquid medicine on the preimpregnation tank and be used for carrying the liquid medicine in the preimpregnation tank to the liquid medicine conveyor who sinks the tin bath, still be equipped with the filter equipment who is used for circulating the interior liquid medicine of filter tank on the preimpregnation tank.

8. The tinned wire prepreg liquid medicine management and control structure of claim 7, wherein a water level sensor for detecting the liquid medicine level is arranged in the prepreg tank.

9. The tinning wire prepreg liquid medicine management and control structure of claim 7, wherein the liquid medicine conveying device is a pneumatic pump.

10. The tinned wire prepreg liquid medicine management and control structure of claim 7, wherein the filter device is a cotton core filter device.

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 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 groove and the upper surface of the filter bag. Because the filter bag adopted in the prior filtration is used for filtration, a large amount of crystals can block the filter bag holes, 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, and then to carry out acid washing and water washing after draining, and then to reopen the cylinder, a large amount of on-site labor hour will be consumed for one-time treatment, resulting in insufficient productivity.

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 methodThe liquid medicine conveying device of the pre-soaking tank and the tin immersion tank is used for conveying liquid medicine to the pre-soaking tank more than or equal to 100m per production²When 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 position 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 a cotton core 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 square number (more than or equal to 100m in particular) is determined according to the production square number of the production plate²) To inject the liquid medicine into the presoaking groove, thus avoiding the problem of plate surface plating leakage caused by insufficient liquid level of the water bed in the groove, and adding the medicine into the presoaking groove continuouslyIn the process of water, in order to avoid overflowing and achieve the aim of continuously updating liquid in the tank, the liquid medicine at the position higher than the preset liquid level height in the pre-immersion tank is conveyed into the tin immersion tank through the arranged liquid medicine conveying device, so that the liquid medicine is continuously discharged in the process of continuously adding the liquid medicine, the liquid medicine adding amount originally added into the tin immersion tank is changed into the liquid medicine adding amount originally added into the tin immersion tank, the liquid medicine is conveyed and added into the tin immersion tank, the updating speed and the updating amount of the liquid in the pre-immersion tank are ensured, the updating of the liquid medicine in the pre-immersion tank and the adding of the liquid medicine in the tin immersion tank are simultaneously realized, the content of tetravalent tin can be effectively reduced, and; 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; still through changing once every week and being used for filterable cotton core, keep filterable validity, guaranteed the stability of water bed, and then prevent that the phenomenon of plating leakage from taking place, guarantee product quality's stability.

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 1²When the height of the liquid medicine in the pre-soaking tank 1 is higher than the preset height, the liquid medicine in the pre-soaking tank 1 is conveyed to the tin precipitation tank 2 through the liquid medicine conveying device 4, so that the height of the liquid medicine in the pre-soaking tank 1 is lower than the 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 predetermined high department in preimpregnation groove 1 is equipped with level sensor 6, make the mouth of pipe of input tube 41 be less than level sensor 6's height in the position of preimpregnation inslot, when utilizing the continuous adding liquid medicine to the preimpregnation inslot of interpolation device, highly reach level sensor's position department when the inslot liquid level by it senses, at this moment control liquid medicine conveyor 4 carries the liquid medicine in the preimpregnation inslot to tin precipitation tank in, when liquid medicine in the preimpregnation inslot highly 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 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 tetravalent tin is prevented from being crystallized and separated out on a heating coil and the bottom of a tank, the problem of pipeline blockage is solved, 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; 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 the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments 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.