CN218089874U - Gold wire and gold groove filtering device - Google Patents

Gold wire and gold groove filtering device Download PDF

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Publication number
CN218089874U
CN218089874U CN202122363797.XU CN202122363797U CN218089874U CN 218089874 U CN218089874 U CN 218089874U CN 202122363797 U CN202122363797 U CN 202122363797U CN 218089874 U CN218089874 U CN 218089874U
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gold
liquid
liquid outlet
circulating pipe
liquid inlet
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CN202122363797.XU
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潘宏名
李政福
谢明运
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Guangzhou Guanghe Technology Co Ltd
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Guangzhou Guanghe Technology Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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Abstract

The utility model discloses a gold wire and gold groove filtering device, which comprises a gold groove, a liquid inlet circulating pipe, a liquid outlet circulating pipe and a filtering unit positioned outside the gold groove, wherein the liquid outlet circulating pipe positioned inside the gold groove comprises a horizontally arranged liquid outlet end, the liquid outlet pipe end comprises at least one liquid outlet, and the opening direction of the liquid outlet faces to the side wall direction away from the fixed liquid inlet circulating pipe and the liquid outlet circulating pipe; the liquid inlet circulating pipe positioned in the metal groove comprises a liquid inlet end, the liquid inlet end comprises at least one liquid inlet, and the height of the liquid inlet is higher than that of the liquid outlet. The utility model provides a pair of be different from current circulating and filtering device, go out the liquid end through the L type and be located the liquid end formation oval-shaped liquid circulation system at L type play liquid end top, ensure liquid medicine concentration evenly distributed in the gold groove, ensure that the metal level thickness after the metallization is even, prolong liquid medicine life simultaneously.

Description

Gold wire and gold groove filtering device
Technical Field
The utility model relates to a printed circuit board makes technical field, especially relates to a gold thread gold groove filter equipment.
Background
Through holes on a PCB (printed circuit board) can be communicated with a circuit of the PCB or electronic components are assembled after being metallized, and metallization refers to a process that a layer of conductive metal is blocked and plated on the wall of an insulated hole by a chemical plating or electroplating method in the through hole by a printed conductor to ensure that the through holes are communicated with one another reliably. The metallization is the core in the PCB manufacturing process, so the process requirements are extremely strict, and the finally formed metal layer is required to have good mechanical toughness and electrical conductivity and to be uniform and complete.
The metallization is usually electroplated in a gold tank, and after the liquid in the gold tank is maintained for a period of time, the liquid needs to be subjected to circulating filtration to remove impurities in the liquid and ensure stable electroplating performance. The filtering device of gold slot in prior art is shown in figure 1, comprising a filtering pump 14 and a filtering barrel 15 located outside the gold slot, a liquid inlet circulating pipe 12 and a liquid outlet circulating pipe 13 located at two sides of the filtering pump 14 and the filtering barrel 15, wherein one end of the liquid inlet circulating pipe 12 and one end of the liquid outlet circulating pipe 13 need to be arranged inside the gold slot 11. As shown in the attached figure 1, a liquid inlet circulating pipe 12 extends into the gold slot 11 from the top end of the gold slot 11, and a liquid outlet end of a liquid outlet circulating pipe 13 is arranged at the bottom of the gold slot 11, so that a circulating and filtering system which sprays liquid from the bottom of the gold slot and then returns to a filtering pump from the side edge of the gold slot is formed.
As shown in fig. 1, in order to make the liquid outlet uniformly discharge liquid, one end of a liquid outlet circulation pipe containing the liquid outlet is generally arranged in an H shape, the liquid outlet with an upward opening is uniformly arranged at the liquid outlet end in the H shape, and the liquid medicine flows in a circulation manner from bottom to top, wherein the filtration pressure is only 0.5kg/cm by the circulation design method 2 The liquid medicine circulation volume is small, the local gold salt concentration difference is large, so that the integral gold thickness uniformity of the product is poor, in particular For example, when the difference of the thickness difference of the metal layer between the position of the metalized large gold surface and the PAD size of 2X 2mm is measured by X-ray and is 0.5 micron, and when 8-9 MTOs (the addition amount is a multiple of the cylinder opening amount) are in the end stage of the service life of the gold bath, the gold reddening bad quality phenomenon is caused because the liquid medicine exchange capacity is gradually deteriorated, and the bath body has to be replaced.
In order to ensure the uniform thickness of the metallized metal layer and to prolong the service life of the liquid medicine in the gold tank, a novel circulating filter device needs to be designed.
SUMMERY OF THE UTILITY MODEL
The present invention aims to solve one of the problems in the related art at least to a certain extent. Therefore, the utility model aims at providing a be different from current circulating filter device, go out liquid end and be located the L type and go out the liquid inlet end at liquid end top and form oval-shaped liquid circulation system through the L type, ensure that liquid medicine concentration evenly distributed in the gold groove, ensure that the metal level thickness after the metallization is even, prolong liquid medicine life simultaneously.
In order to achieve the purpose, the utility model provides a gold melting and gold plating tank filtering device which is used for circularly filtering the liquid in the gold melting and gold plating tank; the gold plating solution circulating device comprises a gold groove, a liquid inlet circulating pipe, a liquid outlet circulating pipe and a filtering unit positioned outside the gold groove, wherein one end of the liquid inlet circulating pipe and one end of the liquid outlet circulating pipe are fixed inside the same side wall of the gold groove, and the other end of the liquid inlet circulating pipe and the other end of the liquid outlet circulating pipe are respectively and fixedly connected with two ends of the filtering unit;
The liquid outlet circulating pipe positioned in the gold groove comprises a liquid outlet end arranged horizontally, the liquid outlet end comprises at least one liquid outlet, and the opening direction of the liquid outlet faces to the direction far away from the side walls of the fixed liquid inlet circulating pipe and the liquid outlet circulating pipe;
the liquid inlet circulating pipe positioned in the metal groove comprises a liquid inlet end, the liquid inlet end comprises at least one liquid inlet, and the height of the liquid inlet is higher than that of the liquid outlet.
Further, the liquid outlet end is an L-shaped liquid outlet end, the L-shaped liquid outlet end comprises a first L-shaped liquid outlet end and a second L-shaped liquid outlet end which are perpendicular to each other, and the first L-shaped liquid outlet end and the second L-shaped liquid outlet end are both fixed inside the same side wall of the gold groove; the second L-shaped liquid outlet end is horizontally arranged, and the first L-shaped liquid outlet pipe is vertically arranged.
Further, the second L-shaped liquid outlet end is positioned at the bottom of the gold groove.
Further, the liquid outlet is a horizontal liquid outlet, and the opening direction of the horizontal liquid outlet is parallel to the bottom surface of the golden groove.
Further, the filter unit comprises a filter pump and a filter vat, the liquid inlet circulating pipe is connected to the filter pump, and the liquid outlet circulating pipe is connected to the filter vat.
Further, the gold groove is a rectangular gold groove.
Further, the liquid inlet end is vertically arranged.
Furthermore, the liquid inlet is one and is located at the bottom of the liquid inlet end.
Further, the ratio of the inner diameters of the liquid inlet circulating pipe and the liquid outlet circulating pipe is as follows: 1:0.9.
Further, the metal tank comprises a metal-containing liquid medicine.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: in the utility model, the liquid inlet and the liquid outlet are positioned in the same side wall of the metal tank, the height of the liquid inlet is higher than that of the liquid outlet, and the liquid outlet is arranged to horizontally spray the filtered liquid, so that the liquid in the metal tank forms elliptical circulation flow, and the concentration of the liquid medicine in the metal tank is ensured to be uniform; further ensuring the uniformity of the metallized metal layer. The circulating filter device can reduce the metal thickness range of the large metal panel from 0.5 micron to 0.2 micron, and prolong the service life of the liquid medicine in the metal tank from 8 MTOs to 12 MTOs; the filtration pressure was adjusted from 0.5kg/cm 2 Increased to 1.0kg/cm 2 (ii) a Meanwhile, the uniformity can be improved, the cost of gold salt is saved, and the phenomenon of poor redness in the gold groove is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
In the drawings:
FIG. 1 is a schematic view of a prior art recycling apparatus;
FIG. 2 is a schematic structural diagram of the middle circulation device of the present invention;
reference numerals: 11-gold groove; 12-liquid inlet circulating pipe; 13-liquid outlet circulating pipe; 14-a filtration pump; 15-a filter vat.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.
It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are merely for convenience in describing the present technical solution and are not to be construed as indicating or implying any relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
A gold melting and plating bath filtering device is used for circularly filtering liquid in a gold bath; liquid can be for containing gold liquid in the gold groove in this application, nickeliferous liquid, copper-containing liquid etc. and the gold groove is arranged in carrying out the metallization to through-hole in the PCB board, consequently, liquid can set up according to actual need in the gold groove, only need ensure to contain in the liquid can electrically conductive metal. The metal layer after metallization realizes the interconnection conduction of the subsequent process.
Specifically, change gold thread gold groove filter equipment in this application and include gold groove, feed liquor circulating pipe, play liquid circulating pipe and be located the outside filter unit in gold groove, notice: the feed liquor circulating pipe, play liquid circulating pipe are for the filter unit in this application for, and the pipeline that is arranged in transporting liquid to the filter unit is named feed liquor circulating pipe, and the pipeline that is arranged in exporting liquid from the filter unit is named play liquid circulating pipe. If naming for the gold groove, then above-mentioned feed liquor with go out the naming of liquid pipeline reverse can, can not influence the utility model discloses scope of protection. The following examples of the present application are given by way of example with respect to a filtration unit.
Example 1
Referring to fig. 1, in this embodiment, one end of the liquid inlet circulation pipe 12 and one end of the liquid outlet circulation pipe 13 are fixed inside the same side wall of the gold tank 11, and the other end of the liquid inlet circulation pipe 12 and the other end of the liquid outlet circulation pipe 13 are respectively fixedly connected to two ends of the filtering unit; wherein, the gold groove is preferably a rectangular parallelepiped structure, and one sidewall means any one sidewall except for the bottom and the top. Correspondingly, the filter unit is arranged outside the side wall. Therefore, one part of the liquid inlet circulating pipe and one part of the liquid outlet circulating pipe are positioned inside the gold tank and used for liquid inlet or liquid outlet, and the other part of the liquid inlet circulating pipe and the liquid outlet circulating pipe are positioned outside the gold tank and used for connecting the filtering unit.
In order to change the circulation flow direction of the liquid medicine in the gold slot, the following structure is arranged: the liquid outlet circulating pipe positioned in the metal groove comprises a liquid outlet end which is horizontally arranged, the liquid outlet end comprises at least one liquid outlet, the opening direction of the liquid outlet faces to the direction away from the side wall of the fixed liquid inlet circulating pipe and the side wall of the liquid outlet circulating pipe, in the embodiment, if the side walls for fixing the liquid inlet end and the liquid outlet end are fixed side walls, the liquid flowing direction of the liquid outlet is sprayed towards the direction away from the fixed side walls, and preferably, the liquid can be sprayed towards the horizontal direction or the downward horizontal direction. When the liquid outlet end of the liquid outlet is positioned at the bottom of the golden groove, the spraying can be carried out towards the horizontal direction and the direction away from the fixed side wall.
The liquid inlet circulating pipe positioned in the metal groove comprises a liquid inlet end, the liquid inlet end comprises at least one liquid inlet, and the height of the liquid inlet is higher than that of the liquid outlet. Therefore, the filtered liquid is sprayed into the gold groove from the bottom of the side wall, and meanwhile, a liquid outlet is also arranged on the same side of the liquid inlet, and the height of the liquid outlet is higher than that of the liquid inlet.
The liquid enters the filtering unit from the liquid inlet at the upper end of the liquid outlet, and the sprayed liquid continuously moves forwards until the sprayed liquid is converted into upward movement by touching the side wall of the gold slot due to certain acceleration, and the upward liquid continuously moves towards the direction of the liquid inlet under the action of suction at the liquid inlet, as shown in figure 2, so that the liquid in the liquid outlet forms an ellipse-like circulation in the gold slot, and the concentration of the liquid in the whole gold slot is ensured to be uniform and equal.
Example 2
Referring to fig. 2, one end of the liquid inlet circulation pipe 12 and one end of the liquid outlet circulation pipe 13 are fixed inside the same side wall of the gold tank 11, and the other end of the liquid inlet circulation pipe and the other end of the liquid outlet circulation pipe are respectively fixedly connected to two ends of the filtering unit. The part of the liquid inlet circulating pipe positioned in the gold slot is defined as a liquid inlet end, and the part of the liquid outlet circulating pipe positioned in the gold slot is defined as a liquid outlet end. The present embodiment is configured as follows: the liquid outlet end is an L-shaped liquid outlet end, the L-shaped liquid outlet end comprises a first L-shaped liquid outlet end and a second L-shaped liquid outlet end which are vertical to each other, and the first L-shaped liquid outlet end and the second L-shaped liquid outlet end are both fixed in the same side wall of the gold slot; the second L-shaped liquid outlet end is horizontally arranged, and the first L-shaped liquid outlet pipe is vertically arranged. The liquid outlet pipe end comprises a plurality of liquid outlets, the liquid outlets are horizontal liquid outlets, and the opening direction of each horizontal liquid outlet is parallel to the bottom surface of the metal groove.
As a preferred embodiment, a second L-shaped liquid outlet end can be arranged at the bottom of the gold groove, so that the solution in the whole gold groove is ensured to participate in the circulating flow.
The liquid inlet end is vertically arranged, and one liquid inlet is arranged at the bottom of the liquid inlet end. Meanwhile, the liquid inlet is higher than the liquid outlet.
Therefore, the filtered liquid is horizontally sprayed into the gold groove from the bottom of the side wall, meanwhile, the liquid outlet is arranged on the same side of the liquid inlet, the height of the liquid outlet is higher than that of the liquid inlet, the liquid enters the filtering unit from the liquid inlet at the upper end of the liquid outlet, the sprayed liquid continuously moves forwards until the sprayed liquid touches the side wall of the gold groove and then moves upwards, the upward liquid continuously moves towards the direction of the liquid inlet under the action of suction force at the liquid inlet, and as shown in the arrow direction in figure 2, the liquid in the liquid outlet forms an ellipse-like circulation in the gold groove, so that the concentration of the liquid in the whole gold groove is ensured to be uniform and equal.
In this embodiment, in view of the number of the liquid outlets is greater than that of the liquid inlets, the ratio of the inner diameters of the liquid inlet circulating pipe and the liquid outlet circulating pipe is set as follows: 1:0.9.
Compared with the circulating filter device shown in the attached drawing 1, the circulating filter device in the embodiment can reduce the metal thickness range of the large metal panel from 0.5 micron to 0.2 micron, and prolong the service life of the liquid medicine in the gold bath from 8 MTOs to 12 MTOs; the filtration pressure was adjusted from 0.5kg/cm 2 Increased to 1.0kg/cm 2 (ii) a Meanwhile, the circulation volume and exchange capacity of the liquid medicine can be enhanced, so that the concentration of local gold salt is more uniform, the phenomenon of bad redness in the gold groove is improved, and the service life of the liquid medicine is prolonged.
Example 3
With reference to fig. 2, in the present application, the filtering unit includes a filtering pump 14 and a filtering barrel 15, the liquid inlet circulation pipe 12 is connected to the filtering pump 14, the liquid outlet circulation pipe 13 is connected to the filtering barrel 15, the filtering pump 14 generates a suction force on the liquid at the liquid inlet, so that the liquid in the gold bath enters the filtering pump 14 through the liquid inlet circulation pipe 12, the liquid passing through the filtering pump 14 can be buffered in the filtering barrel 15, and the liquid can smoothly enter the gold bath 11 through the liquid outlet circulation pipe 13 due to the difference in the upper and lower pressures generated by the liquid in the filtering barrel 15, thereby completing the circulation of the liquid medicine in the gold bath. Preferably, a filter screen and other devices can be arranged in the filter vat, so that impurities are prevented from being recycled into the gold tank, the uniformity of the liquid medicine in the gold tank is further improved, and the thickness of a metal layer formed after metallization is uniform.
In the utility model, the liquid inlet and the liquid outlet are positioned in the same side wall of the metal tank, and the height of the liquid inlet is higher than that of the liquid outlet, and the liquid outlet is arranged to horizontally spray filtered liquid, so that the liquid in the metal tank forms elliptical circulation flow, and the concentration of the liquid medicine in the metal tank is ensured to be uniform; further ensuring the uniformity of the metallized metal layer.

Claims (10)

1. A gold melting and plating bath filtering device is used for circularly filtering liquid in a gold bath; the gold plating bath is characterized by comprising a gold bath, a liquid inlet circulating pipe, a liquid outlet circulating pipe and a filtering unit positioned outside the gold bath, wherein one end of the liquid inlet circulating pipe and one end of the liquid outlet circulating pipe are fixed inside the same side wall of the gold bath, and the other ends of the liquid inlet circulating pipe and the liquid outlet circulating pipe are respectively fixedly connected with two ends of the filtering unit;
the liquid outlet circulating pipe positioned in the gold groove comprises a liquid outlet end arranged horizontally, the liquid outlet end comprises at least one liquid outlet, and the opening direction of the liquid outlet faces to the direction far away from the side walls of the fixed liquid inlet circulating pipe and the liquid outlet circulating pipe;
the liquid inlet circulating pipe positioned in the metal groove comprises a liquid inlet end, the liquid inlet end comprises at least one liquid inlet, and the height of the liquid inlet is higher than that of the liquid outlet.
2. The filtration device for the gold wire and gold groove of claim 1, wherein the liquid outlet end is an L-shaped liquid outlet end, the L-shaped liquid outlet end comprises a first L-shaped liquid outlet end and a second L-shaped liquid outlet end which are vertical, and the first L-shaped liquid outlet end and the second L-shaped liquid outlet end are both fixed in the same side wall of the gold groove; the second L-shaped liquid outlet end is horizontally arranged, and the first L-shaped liquid outlet pipe is vertically arranged.
3. The filtration device for gold-melting wire and gold groove as claimed in claim 2, wherein the second L-shaped liquid outlet is located at the bottom of the gold groove.
4. The filtration device of claim 1, wherein the liquid outlet is a horizontal liquid outlet, and the opening direction of the horizontal liquid outlet is parallel to the bottom surface of the gold tank.
5. The filtration device of claim 1, wherein the filtration unit comprises a filtration pump and a filtration barrel, the liquid inlet circulation pipe is connected to the filtration pump, and the liquid outlet circulation pipe is connected to the filtration barrel.
6. The gold-to-wire gold bath filter device according to claim 1, wherein the gold bath is a rectangular gold bath.
7. The gold-melting wire and gold groove filtering device as claimed in claim 1, wherein the liquid inlet end is vertically arranged.
8. The gold-melting wire and gold groove filtering device as claimed in claim 7, wherein the liquid inlet is one and is located at the bottom of the liquid inlet end.
9. The gold melting wire and groove filtering device as claimed in claim 1, wherein the ratio of the inner diameters of the liquid inlet circulating pipe and the liquid outlet circulating pipe is: 1:0.9.
10. The filtering device of claim 1, wherein the gold bath contains a metal-containing liquid chemical.
CN202122363797.XU 2021-09-28 2021-09-28 Gold wire and gold groove filtering device Active CN218089874U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122363797.XU CN218089874U (en) 2021-09-28 2021-09-28 Gold wire and gold groove filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122363797.XU CN218089874U (en) 2021-09-28 2021-09-28 Gold wire and gold groove filtering device

Publications (1)

Publication Number Publication Date
CN218089874U true CN218089874U (en) 2022-12-20

Family

ID=84443542

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122363797.XU Active CN218089874U (en) 2021-09-28 2021-09-28 Gold wire and gold groove filtering device

Country Status (1)

Country Link
CN (1) CN218089874U (en)

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