CN104888936A - PCB (printed circuit board) screening machine and method - Google Patents
PCB (printed circuit board) screening machine and method Download PDFInfo
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- CN104888936A CN104888936A CN201510305762.7A CN201510305762A CN104888936A CN 104888936 A CN104888936 A CN 104888936A CN 201510305762 A CN201510305762 A CN 201510305762A CN 104888936 A CN104888936 A CN 104888936A
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- pcb
- mesh screen
- bad
- push pedal
- separation bin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The invention provides a PCB (printed circuit board) screening machine and method. The machine comprises a body, a first screen, a second screen, a separating chamber used for holding the first screen and provided within the body, and a second push plate used for pushing the second screen. The separating chamber comprises a deep water area and a shallow water area. The first screen is used with the deep water area of the separating chamber. The second screen is used with the shallow water area of the separating chamber. The second push plate is disposed on the bottom of the shallow area of the separating chamber and is vertically movably connected with the body through a second porous post; the second screen is disposed above the second push plate. The PCB screening machine and the method has the advantages that defective PCBs and non-defective PCBs can be quickly and accurately separated, screening efficiency is improved, and manpower and material resources are greatly saved for enterprises.
Description
Technical field
The present invention relates to PCB (Printed Circuit Board, printed circuit board (PCB)) technical field, more specifically, relate to a kind of PCB screening plant and screening technique.
Background technology
Along with a lot of electronic product is tending towards miniaturized gradually, the PCB of the electric interconnection between each electronic devices and components correspondingly realizing electronic product is also tending towards miniaturized.
Fig. 1 shows existing PCB structure.As shown in Figure 1, the PCB 11 of a justifying there is multiple small-sized PCB (comprising non-defective unit PCB 12 and bad PCB 13).Wherein, manufacturer generally with the form shipment of justifying, bad PCB 13 with blacking or beat fork form mark in PCB 11, so that manufacturer or client identify the non-defective unit PCB in justifying PCB and bad PCB.
When completed knocked down products, first need justifying PCB to cut into several small-sized PCB, then before completed knocked down products, the bad PCB of mark is chosen, or select while assemble when assembling product.
Can be found out by above-mentioned, the existing screening mode to PCB is comparatively strong to artificial dependence, and particularly for the PCB that size is less, screening effeciency is low and there is the risk of omitting.
Summary of the invention
In view of the above problems, the object of this invention is to provide a kind of PCB screening plant and screening technique, there is omission and inefficient problem to solve existing PCB screening mode.
The invention provides a kind of PCB screening plant, comprising main body, the first mesh screen, the second mesh screen, being arranged on the separation bin for placing the first mesh screen of body interior, and for promoting the second push pedal of the second mesh screen; Wherein, separation bin comprises profundal zone and phytal zone two parts, the profundal zone of the first mesh screen and separation bin with the use of, the phytal zone of the second mesh screen and separation bin with the use of; Second push pedal is arranged on the bottom surface, phytal zone of separation bin, and be vertically flexibly connected with main body by the second hole post, the second mesh screen is arranged on the top of the second push pedal.
In addition, preferred structure is, this PCB screening plant also comprises the first push pedal of the profundal zone sidewall being arranged on separation bin, and the height that the first push pedal is arranged is higher than the level height of the bottom surface of the phytal zone of separation bin, and the range distance of the first push pedal is the length of separation bin.
In addition, preferred structure is, the first push pedal is laterally flexibly connected with main body by the first hole post.
In addition, preferred structure is, the first push pedal is gathered porose, the size in hole is less than the size of PCB.
In addition, preferred structure is, the first mesh screen is for holding the PCB before screening, and PCB comprises non-defective unit PCB and bad PCB, and bad PCB is pasted with foam; Second mesh screen is for holding the bad PCB after screening.
In addition, preferred structure is, the first mesh screen is provided with the first handle, and the second mesh screen is provided with the second handle.
In addition, the invention provides a kind of method utilizing above-mentioned PCB screening plant to screen PCB, comprising: foam is pasted on the defective products of justifying PCB; Justifying PCB is separated into multiple small-sized PCB unit; Wherein, the multiple small-sized PCB unit after separation comprises non-defective unit PCB and bad PCB; Multiple small-sized PCB unit after being separated is positioned in the first mesh screen, the first mesh screen is sunk to and is contained with in the separation bin of cleaning fluid; Be separated non-defective unit PCB and the bad PCB being pasted with foam; Wherein, bad PCB floats up to the cleaning fluid surface in separation bin by the buoyancy of pasted foam; Collect the bad PCB after being separated with non-defective unit PCB; In the process of collecting bad PCB, the second push pedal is risen and is made bad PCB enter in the second mesh screen by the second mesh screen pushes away, and the second push pedal, in the process of the rising continued, drags out the second mesh screen away from cleaning fluid surface.
Utilize above-mentioned according to PCB screening plant of the present invention and screening technique, by mesh screen (the first mesh screen and the second mesh screen), the second push pedal and paste foam by bad PCB, and by the buoyancy of foam, the defective products on justifying PCB is filtered out, thus can fast and accurately bad PCB be separated with non-defective unit PCB, while raising screening effeciency, for enterprise saves a large amount of manpower and materials costs.
In order to realize above-mentioned and relevant object, will describe in detail and the feature particularly pointed out in the claims after one or more aspect of the present invention comprises.Explanation below and accompanying drawing describe some illustrative aspects of the present invention in detail.But what these aspects indicated is only some modes that can use in the various modes of principle of the present invention.In addition, the present invention is intended to comprise all these aspects and their equivalent.
Accompanying drawing explanation
By reference to the content below in conjunction with the description of the drawings and claims, and understand more comprehensively along with to of the present invention, other object of the present invention and result will more be understood and should be readily appreciated that.In the accompanying drawings:
Fig. 1 is existing PCB structural representation;
Fig. 2 is the stereo decomposing structural representation of the PCB screening plant according to the embodiment of the present invention;
Fig. 3 is the plane decomposition structural representation of the PCB screening plant according to the embodiment of the present invention.
In figure: PCB 11, PCB 12, bad PCB 13, main body 20, first hole post 21, first mesh screen 22, first handle 221, second mesh screen 23, second handle 231, separation bin 24, second push pedal 25, first push pedal 26, non-defective unit PCB 271, bad PCB 272, foam 28, second hole post 29
Label identical in all of the figs indicates similar or corresponding feature or function.
Detailed description of the invention
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Artificial dependence is there is strong for aforementioned existing PCB screening mode, the degree of accuracy of screening and inefficient problem, by PCB screening plant provided by the invention, by pasting foam on bad PCB, after justifying PCB is separated into several small-sized PCB unit, some small-sized PCB unit after being separated is put into the first mesh screen (now, PCB in first mesh screen is the mixing of non-defective unit PCB and bad PCB), then the first mesh screen sunk to separation bin and rock the first mesh screen, by the buoyancy of foam by the bad PCB in the first mesh screen and non-defective unit PCB quick separating, while raising screening effeciency, for enterprise uses manpower and material resources sparingly cost.
In order to PCB screening plant provided by the invention is described, Fig. 2 and Fig. 3 shows the decomposition texture of the PCB screening plant according to the embodiment of the present invention; Wherein, Fig. 2 shows the stereo decomposing structure of the PCB screening plant according to the embodiment of the present invention; Fig. 3 shows the plane decomposition structure of the PCB screening plant according to the embodiment of the present invention.
As shown in Figure 2 and Figure 3, PCB screening plant provided by the invention comprise main body 20, first mesh screen 22, second mesh screen 23, be arranged on main body 20 inside for placing the separation bin 24 of the first mesh screen 22 and the second push pedal 25 for promoting the second mesh screen 23.
Wherein, separation bin 24 comprises profundal zone and phytal zone two parts, the profundal zone of the first mesh screen 22 and separation bin 24 with the use of, for holding the PCB before screening.Before screening, PCB in first mesh screen 22 is the mixing of non-defective unit PCB 271 and bad PCB 272, and bad PCB 272 is pasted with foam 28, the phytal zone of the second mesh screen 23 and separation bin 24 with the use of, for holding the bad PCB 272 after screening, second mesh screen 23 is arranged on the top of the second push pedal 25, and the second push pedal 25 is vertically flexibly connected with main body 20 by the second hole post 29.
Wherein, in separation bin 24, be contained with cleaning fluid, with the surface making bad PCB 272 can float up to cleaning fluid by the buoyancy of foam 28, thus realize the quick separating of non-defective unit PCB 271 and bad PCB 272.It should be noted that at this, what hold in separation bin 24 both can be cleaning fluid, also can be the floating liquid of other bad PCB that can make to be pasted with foam 28 such as water.
After non-defective unit PCB 271 is separated with bad PCB 272, need bad PCB 272 to collect.In the present invention, the mode of collecting bad PCB 272 is realized by the first push pedal 26, second push pedal 25 and the second mesh screen 23.
Particularly, the first push pedal 26 is arranged on the sidewall of the profundal zone of separation bin 24, and the height of the first push pedal 26 is higher than the level height of the bottom surface of the phytal zone of separation bin 24.First push pedal 26 is laterally flexibly connected with main body 20 by the first hole post 21.When collecting the bad PCB 272 swum on cleaning fluid surface, first push pedal 26 runs from the sidewall of the profundal zone of separation bin 24 to the phytal zone of separation bin 24, till until the first push pedal 26 bad PCB 272 being pushed to the top of the second mesh screen 23 in the second push pedal 25.When the first push pedal 26 moves to the second push pedal 25, the range distance of the first push pedal 26 is the length of separation bin 24.
In addition, when collecting bad PCB 272, in order to prevent the cleaning fluid in separation bin 24 along with good PCB 272 1 pieces of movements, cause cleaning fluid and bad PCB 272 excessive, first push pedal 26 is densely covered with several holes, the size in hole need be less than the size of PCB, and so just can ensure that the first push pedal 26 is when pushing to bad PCB 272 above the second mesh screen 23, cleaning fluid can not move together along with bad PCB 272.
In addition, for the ease of operation, the first mesh screen 22 is provided with the first handle 221, the second mesh screen 23 is provided with the second handle 231, so that enable operator put down smoothly or mention the first mesh screen 22 or the second mesh screen 23.
In addition, the present invention also provides a kind of method utilizing above-mentioned PCB screening plant to screen PCB.Below will be described in detail to PCB screening technique provided by the invention.
The above-mentioned PCB screening plant provided is utilized to comprise the method that PCB screens: to be pasted on by foam on the defective products of justifying PCB; Justifying PCB is separated into multiple small-sized PCB unit; Wherein, the multiple small-sized PCB unit after separation comprises non-defective unit PCB and bad PCB; Multiple small-sized PCB unit after being separated is positioned in the first mesh screen, the first mesh screen is sunk to and is contained with in the separation bin of cleaning fluid; Be separated non-defective unit PCB and the bad PCB being pasted with foam; Wherein, by the buoyancy of foam, bad PCB floats up to the cleaning fluid surface in separation bin; Collect the bad PCB after being separated with non-defective unit PCB; In the process of collecting bad PCB, the second push pedal is risen and is made bad PCB enter in the second mesh screen by the second mesh screen pushes away, and the second push pedal, in the process of the rising continued, drags out the second mesh screen away from cleaning fluid surface.
Particularly, with an example, PCB screening technique provided by the invention is described below.For the PCB of justifying, the process that defective products wherein screens is comprised:
1, on the defective products of justifying PCB, foam is pasted;
2, after printing paster to justifying PCB, being separated this justifying PCB and making to be shaped as several small-sized PCB unit, now, is the mixing of non-defective unit PCB and bad PCB in several the small-sized PCB unit after separated;
3, several the small-sized PCB unit after separation are contained in the first mesh screen, and make the first mesh screen all sink in the profundal zone of the separation bin being contained with cleaning fluid by manual operation;
4, by people for rock or by ultrasonic wave make first mesh screen vibration, thus the bad PCB making to be pasted with foam floats up to cleaning fluid surface by the buoyancy of foam, non-defective unit PCB is then still in and sinks in the first mesh screen of cleaning fluid, so far, the mask work of non-defective unit PCB and bad PCB leaves it at that, and next carries out the collection work to bad PCB;
5, the bad PCB promoting to float up to cleaning fluid surface by the first push pedal moves to the phytal zone of separation bin, until the bad PCB floating up to cleaning fluid surface is passed the top to the second mesh screen by the first push pedal, first push pedal stops mobile, now, the stroke distances of the first push pedal is the length of separation bin profundal zone;
6, the second push pedal is risen, upwards pushed away by second mesh screen and make bad PCB enter in the second mesh screen, the second mesh screen, in the process of lasting rising, is released after cleaning fluid by the second push pedal, mention the second handle by artificial or instrument the second mesh screen is taken off, and then bad PCB is poured out;
7, the second push pedal regains original position with the second mesh screen, and meanwhile, the first push pedal also regains original position;
8, by manually mentioning the first handle, thus the non-defective unit PCB in the first mesh screen after screening is picked up from separation bin, and non-defective unit PCB is dried or dries.
It should be noted that, PCB screening plant provided by the invention and screening technique also have following replacement or close scheme:
One, additional cleaning machine in PCB screening plant, after being separated with bad PCB non-defective unit PCB, while the bad PCB of collection, is cleaned non-defective unit PCB by additional cleaning machine;
Two, other modes be can be replaced to the collection mode of the bad PCB after separation, such as, make cleaning fluid flow thus defective products is drifted about to the top of the second mesh screen.
By above-mentioned known, PCB screening plant provided by the invention and screening technique have the following advantages:
1, the buoyancy by foam makes bad PCB float, thus completes the quick separating of non-defective unit PCB and bad PCB;
2, saving a large amount of human costs and man-hour, is Reducing Cost in Enterprises;
3, eliminate hand picking and there is the drawback of omitting, improve efficiency and the degree of accuracy of screening.
Describe in an illustrative manner according to PCB screening plant of the present invention and screening technique above with reference to accompanying drawing.But, it will be appreciated by those skilled in the art that PCB screening plant and screening technique that the invention described above is proposed, various improvement can also be made on the basis not departing from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (10)
1. a PCB screening plant, comprising: main body, the first mesh screen, the second mesh screen, be arranged on the separation bin for placing described first mesh screen of described body interior, and for promoting the second push pedal of described second mesh screen; Wherein,
Described separation bin comprises profundal zone and phytal zone two parts, the profundal zone of described first mesh screen and described separation bin with the use of, the phytal zone of described second mesh screen and described separation bin with the use of;
Described second push pedal is arranged on the bottom surface, phytal zone of described separation bin, is vertically flexibly connected with described main body by the second hole post, and described second mesh screen is arranged on the top of described second push pedal.
2. PCB screening plant as claimed in claim 1, also comprise: the first push pedal being arranged on the profundal zone sidewall of described separation bin, the height that described first push pedal is arranged is higher than the level height of the bottom surface of the phytal zone of described separation bin, and the range distance of described first push pedal is the length of described separation bin.
3. PCB screening plant as claimed in claim 2, wherein, described first push pedal is laterally flexibly connected with described main body by the first hole post.
4. PCB screening plant as claimed in claim 3, wherein, described first push pedal is gathered porose, the size in described hole is less than the size of described PCB.
5. PCB screening plant as claimed in claim 1, wherein, described first mesh screen is for holding the PCB before screening, and described PCB comprises non-defective unit PCB and bad PCB, and described bad PCB is pasted with foam;
Described second mesh screen is for holding the bad PCB after screening.
6. PCB screening plant as claimed in claim 1, wherein, described first mesh screen is provided with the first handle, described second mesh screen is provided with the second handle.
7. a PCB screening technique, utilize as the PCB screening plant in claim 1 ~ 6 as described in any one screens PCB, described screening technique comprises:
Foam is pasted on the defective products of justifying PCB;
Described justifying PCB is separated into multiple small-sized PCB unit; Wherein, the multiple small-sized PCB unit after separation comprises non-defective unit PCB and bad PCB;
Multiple small-sized PCB unit after being separated is positioned in the first mesh screen, described first mesh screen is sunk to and is contained with in the separation bin of cleaning fluid;
Be separated non-defective unit PCB and the bad PCB being pasted with foam; Wherein, described bad PCB floats up to the cleaning fluid surface in separation bin by the buoyancy of pasted foam;
Collect the bad PCB after being separated with non-defective unit PCB; In the process that described bad PCB is collected, second push pedal is risen and is made described bad PCB enter in described second mesh screen by described second mesh screen pushes away, described second mesh screen, in the process of the rising continued, is dragged out away from described cleaning fluid surface by described second push pedal.
8. PCB screening technique as claimed in claim 7, wherein, in the process of collecting described bad PCB, by the first push pedal or make the cleaning fluid in separation bin flow to make described bad PCB move to the top of described second mesh screen.
9. PCB screening technique as claimed in claim 7, wherein, makes the bad PCB being pasted with foam float up to described cleaning fluid surface by rocking or vibrating described first mesh screen.
10. PCB screening technique as claimed in claim 7, wherein also comprises, is taken off by the second mesh screen dragging out described cleaning fluid surface away from, pour out the bad PCB in described second mesh screen, and described second push pedal regains original position with the second mesh screen;
Pick up described first mesh screen, the non-defective unit PCB in the first mesh screen picked up is carried out drying or drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305762.7A CN104888936B (en) | 2015-06-05 | 2015-06-05 | PCB (printed circuit board) screening machine and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510305762.7A CN104888936B (en) | 2015-06-05 | 2015-06-05 | PCB (printed circuit board) screening machine and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104888936A true CN104888936A (en) | 2015-09-09 |
| CN104888936B CN104888936B (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510305762.7A Active CN104888936B (en) | 2015-06-05 | 2015-06-05 | PCB (printed circuit board) screening machine and method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2194487A1 (en) * | 1972-08-02 | 1974-03-01 | Maguin Ste Nle Ets | |
| FR2213024A1 (en) * | 1973-01-09 | 1974-08-02 | Maguin Ste Nle Ets | Beetroot washing appts. with ascending water flow - for removal of stones and ligneous matter |
| CN1730158A (en) * | 2005-04-04 | 2006-02-08 | 李风宁 | Straw slices purifying machine |
| CN1935383A (en) * | 2006-09-30 | 2007-03-28 | 宁波韵升股份有限公司 | Magnetic steel disc classifier |
| UY33212A (en) * | 2010-02-02 | 2011-08-31 | Weyerhaeuser Co | BIOMASS CONDITIONING SYSTEM AND CONDITIONING METHOD |
| CN202570583U (en) * | 2012-04-28 | 2012-12-05 | 临泉县金禾面粉有限公司 | Kernel impurity removal device |
| CN204866158U (en) * | 2015-06-05 | 2015-12-16 | 歌尔声学股份有限公司 | PCB sieving mechanism |
-
2015
- 2015-06-05 CN CN201510305762.7A patent/CN104888936B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2194487A1 (en) * | 1972-08-02 | 1974-03-01 | Maguin Ste Nle Ets | |
| FR2213024A1 (en) * | 1973-01-09 | 1974-08-02 | Maguin Ste Nle Ets | Beetroot washing appts. with ascending water flow - for removal of stones and ligneous matter |
| CN1730158A (en) * | 2005-04-04 | 2006-02-08 | 李风宁 | Straw slices purifying machine |
| CN1935383A (en) * | 2006-09-30 | 2007-03-28 | 宁波韵升股份有限公司 | Magnetic steel disc classifier |
| UY33212A (en) * | 2010-02-02 | 2011-08-31 | Weyerhaeuser Co | BIOMASS CONDITIONING SYSTEM AND CONDITIONING METHOD |
| CN202570583U (en) * | 2012-04-28 | 2012-12-05 | 临泉县金禾面粉有限公司 | Kernel impurity removal device |
| CN204866158U (en) * | 2015-06-05 | 2015-12-16 | 歌尔声学股份有限公司 | PCB sieving mechanism |
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| Publication number | Publication date |
|---|---|
| CN104888936B (en) | 2017-05-24 |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: Goertek Inc. |
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