CN1895796A - Method for projecting and screening microelectronic-packed tin ball - Google Patents
Method for projecting and screening microelectronic-packed tin ball Download PDFInfo
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- CN1895796A CN1895796A CN 200510045518 CN200510045518A CN1895796A CN 1895796 A CN1895796 A CN 1895796A CN 200510045518 CN200510045518 CN 200510045518 CN 200510045518 A CN200510045518 A CN 200510045518A CN 1895796 A CN1895796 A CN 1895796A
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- tin ball
- conveyer belt
- screening
- mechanical oscillation
- casting device
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Abstract
A throwing method for screening the tin beads used for microelectronic package features that its thrower is composed of a vibration-type spiral feeder, a throw unit consisting of motor, drive roller and conveying belt, three recepting boxes and a vacuum cover with vacuumizing pump.
Description
Technical field:
The present invention relates to a kind of screening technique of microelectronic-packed tin ball.
Background technology:
Along with the develop rapidly of electronic information technology, large-scale integrated circuit use amount is increasing, and IC chip wherein need encapsulate with the tin ball, and this just need produce large quantities of high-quality tin balls.In existing tin ball producing process, the tin ball that makes need screen through the pair roller of twice different gap, to filter out certified products tin ball and oversize and too small tin ball.But screen with pair roller and to have following shortcoming: 1, the influence of the bearing clearance of roller causes the screening precision lower; When 2, the tin ball flows, be prone to many row's overlapping phenomenons, cause bead to be stacked on the big ball, cause omission; 3, the tin ball easily is bonded on the roller, and material scraping plate is scraped unclean, and the tin ball is brought to following crimp; 4, screening effeciency is lower.Extensively retrieve at the problems referred to above, still find no desirable technical scheme.
Summary of the invention:
Purpose of the present invention is exactly for overcoming a kind of brand-new screening technique that the above-mentioned shortcoming that exists in the prior art proposes.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of method for projecting and screening microelectronic-packed tin ball, it is characterized in that casting device that it forms by the mechanical oscillation helixes feed equipment, by motor and live-roller and conveyer belt, three and casting device pulp-collecting box separated by a distance forms, match with conveyer belt in the casting device in the position of the discharging opening of mechanical oscillation helixes feed equipment, so that the tin ball is dropped on conveyer belt.The mechanical oscillation helixes feed equipment is common device, it adopts the mode of mechanical oscillation that the tin ball is risen along the helical duct on the charging tray, oral area has specific channel can make the tin ball arrange single ball to advance more, many row's tin balls drop on uniformly in the exit on the casting device, can throw a plurality of tin balls simultaneously and can overlappingly not throw along the conveyer belt tangential direction.Motor adopts VFC, can accurately control the speed of conveyer belt, the tin ball drops on the conveyer belt, the movement at the uniform velocity of conveyer belt will impose same initial velocity to each tin ball and throw away along the tangential direction of this drum, lightweight ball cast is far away, the ball cast of Heavy Weight is near, and the size of tin ball is reflected on the weight of weight, selects a rational interval to reach the purpose of screening in the position of falling sphere.Simultaneously because of pair spheroid Heavy Weights, and incomplete in light weight, in this device, can distinguish effectively.
Only have because of tin ball dimensional tolerance is little ± 0.01～± 0.02 millimeter, scope is narrower when selecting between ball-dropping area, for enlarging between ball-dropping area, reduce windage power, increase the impelling tin ball area that is scattered, the casting device of forming with described mechanical oscillation helixes feed equipment, by motor and live-roller and conveyer belt, three and casting device pulp-collecting box separated by a distance all is arranged in the vacuum (-tight) housing feed pipe that is connected with vavuum pump on the vacuum (-tight) housing and matches with the mechanical oscillation helixes feed equipment.To be evacuated in the guard shield with vavuum pump, reducing the resistance of air, thereby reach the purpose that enlarges between the certified products ball-dropping area.
The projecting and screening method that the present invention taked is compared prior art and is had following advantage: 1, screening precision height; 2, screening effeciency height; 3, false dismissal probability is little; 4, can not damage the tin ball.
For the present invention is described in further detail, one embodiment of the present of invention are provided below.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that the K of Fig. 1 is to view.
The specific embodiment:
Embodiment 1: as shown in Figure 1, on the supporting surface in the vacuum (-tight) housing 17 a mechanical oscillation helixes feed equipment 14 is set, connect vibratory feed unit 2 above it, be provided with branch row passage 2a (as shown in Figure 2) above the feed hopper 2, so that tin ball 4 is advanced along point single vibration of row passage 2a.On supporting surface, also be provided with a motor 13 and a pair of live-roller 8, live-roller 8 is connected on the supporting surface by bracing frame 9, the output shaft of motor 13 by synchronously with 12 be coupled to live-roller on synchronous pulley 11 be connected cooperation, be connected with conveyer belt 10 on the live-roller, the oral area of feed hopper 2 matches with conveyer belt 10 middle parts, so that making the tin ball fall into conveyer belt can not fall down, conveyer belt 10 can have certain inclination angle that makes progress, tin ball 3 is dished out forward with initial velocity V in the end of conveyer belt 10, and the tin ball 4 of dishing out is according to its size flight different distance.The supporting surface in the place ahead is provided with three pulp-collecting box 5,6,7, and lighter tin ball size is also little, and cast falls into pulp-collecting box 5 farthest, is defective tin ball; Heavier tin ball size is also big, and cast is nearest, falls into pulp-collecting box 7, is defective tin ball; Size tin ball placed in the middle then falls into pulp-collecting box 6, is qualified tin ball.Be provided with vavuum pump 16 below vacuum (-tight) housing 17, it will be pumped into certain vacuum by the pipeline 15 that is coupled to vacuum (-tight) housing in the vacuum (-tight) housing.Side at vacuum (-tight) housing connects the feed pipe 1 of carrying the tin ball, and its oral area is facing to mechanical oscillation helixes feed equipment 14, so that auto feed.
Claims (2)
1, a kind of method for projecting and screening microelectronic-packed tin ball, it is characterized in that its employing mechanical oscillation helixes feed equipment, the casting device of forming by motor and live-roller and conveyer belt, form tin ball projecting and screening device with casting device pulp-collecting box separated by a distance for three, match with conveyer belt in the casting device in the position of the discharging opening of mechanical oscillation helixes feed equipment, so that the tin ball that advances along the mechanical oscillation helixes feed equipment is dropped on conveyer belt, driven by motor conveyer belt uniform motion, the tin ball on conveyer belt of dropping thrown forward to penetrate go, cast depends on tin ball size, larger-size tin ball cast falls into nearest pulp-collecting box recently, be defective tin ball, the less tin ball cast of size falls into pulp-collecting box farthest farthest, also be defective tin ball, the tin ball that falls into the indirect magazine is qualified tin ball.
2, screening technique according to claim 1, the casting device that it is characterized in that described mechanical oscillation helixes feed equipment, is made up of motor and live-roller and conveyer belt, three and casting device pulp-collecting box separated by a distance all is arranged in the vacuum (-tight) housing tin ball feed pipe that is connected with vavuum pump on the vacuum (-tight) housing and matches with the mechanical oscillation helixes feed equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100455188A CN100395040C (en) | 2005-12-08 | 2005-12-08 | Method for projecting and screening microelectronic-packed tin ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100455188A CN100395040C (en) | 2005-12-08 | 2005-12-08 | Method for projecting and screening microelectronic-packed tin ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1895796A true CN1895796A (en) | 2007-01-17 |
| CN100395040C CN100395040C (en) | 2008-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100455188A Expired - Fee Related CN100395040C (en) | 2005-12-08 | 2005-12-08 | Method for projecting and screening microelectronic-packed tin ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100395040C (en) |
Cited By (12)
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| CN102083551A (en) * | 2008-04-02 | 2011-06-01 | 焚化炉底灰研究与发展公司 | Separation-apparatus |
| US9033157B2 (en) | 2010-07-28 | 2015-05-19 | Inashco R&D B.V. | Separation apparatus |
| CN105050736A (en) * | 2013-03-27 | 2015-11-11 | 贺利氏德国有限责任两合公司 | Solder sphere sorting |
| US9221061B2 (en) | 2011-02-28 | 2015-12-29 | Inashco R&D B.V. | Eddy current separation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus |
| CN106111545A (en) * | 2016-09-23 | 2016-11-16 | 潍坊职业学院 | Coin automatic sorting machine |
| CN106204874A (en) * | 2016-07-08 | 2016-12-07 | 武汉体育学院 | A kind of impact type coin sorter |
| CN106378308A (en) * | 2016-08-29 | 2017-02-08 | 芜湖银星汽车零部件有限公司 | Screening device |
| CN106881270A (en) * | 2017-04-11 | 2017-06-23 | 四川南格尔生物科技有限公司 | A kind of dropping funnel and waste material separation equipment and separate method |
| CN108636809A (en) * | 2018-04-20 | 2018-10-12 | 航天材料及工艺研究所 | A kind of spherical metal powder exclusion device and impurity-removing method |
| CN111215335A (en) * | 2019-11-14 | 2020-06-02 | 杭州魔象智能科技有限公司 | Rotation type disc pearl sieving mechanism |
| CN111957577A (en) * | 2020-08-07 | 2020-11-20 | 泰山学院 | Concrete is with screening sand machine in succession in grades |
| CN114405644A (en) * | 2022-01-21 | 2022-04-29 | 上海山美环保装备股份有限公司 | Dry aggregate pre-sorting system and floor type sand making process system |
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| IT1146772B (en) * | 1981-04-23 | 1986-11-19 | Daneco Danieli Ecologia Spa | AEROBALISTIC DEVICE FOR FRACTIONATION OF THE MATERIALS PRESENT IN PRE-TREATED URBAN SOLID WASTE |
| WO1987007187A1 (en) * | 1986-05-26 | 1987-12-03 | Comalco Aluminium Limited | Separation method and apparatus |
| JPH03169376A (en) * | 1989-11-23 | 1991-07-23 | Il Sin Ind Co Ltd | Talc selection device |
| NL1011628C2 (en) * | 1999-03-22 | 2000-09-27 | Tno | Device for aerodynamically separating particles. |
| TW577780B (en) * | 2001-07-26 | 2004-03-01 | Ind Des Poudres Spheriques | Device for producing spherical balls |
-
2005
- 2005-12-08 CN CNB2005100455188A patent/CN100395040C/en not_active Expired - Fee Related
Cited By (20)
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| US9409210B2 (en) | 2008-04-02 | 2016-08-09 | Adr Technology B.V. | Separation-apparatus |
| CN102083551A (en) * | 2008-04-02 | 2011-06-01 | 焚化炉底灰研究与发展公司 | Separation-apparatus |
| US10052660B2 (en) | 2008-04-02 | 2018-08-21 | Adr Technology B.V. | Separation-apparatus |
| US9033157B2 (en) | 2010-07-28 | 2015-05-19 | Inashco R&D B.V. | Separation apparatus |
| US9339848B2 (en) | 2010-07-28 | 2016-05-17 | Adr Technology B.V. | Separation apparatus |
| CN103118808B (en) * | 2010-07-28 | 2016-08-03 | Adr技术有限公司 | Separation equipment |
| US9221061B2 (en) | 2011-02-28 | 2015-12-29 | Inashco R&D B.V. | Eddy current separation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus |
| CN105050736A (en) * | 2013-03-27 | 2015-11-11 | 贺利氏德国有限责任两合公司 | Solder sphere sorting |
| CN106204874B (en) * | 2016-07-08 | 2022-06-07 | 武汉体育学院 | Hit and hit formula coin classification machine |
| CN106204874A (en) * | 2016-07-08 | 2016-12-07 | 武汉体育学院 | A kind of impact type coin sorter |
| CN106378308A (en) * | 2016-08-29 | 2017-02-08 | 芜湖银星汽车零部件有限公司 | Screening device |
| CN106111545A (en) * | 2016-09-23 | 2016-11-16 | 潍坊职业学院 | Coin automatic sorting machine |
| CN106881270A (en) * | 2017-04-11 | 2017-06-23 | 四川南格尔生物科技有限公司 | A kind of dropping funnel and waste material separation equipment and separate method |
| CN108636809A (en) * | 2018-04-20 | 2018-10-12 | 航天材料及工艺研究所 | A kind of spherical metal powder exclusion device and impurity-removing method |
| CN111215335A (en) * | 2019-11-14 | 2020-06-02 | 杭州魔象智能科技有限公司 | Rotation type disc pearl sieving mechanism |
| CN111215335B (en) * | 2019-11-14 | 2021-06-08 | 杭州魔象智能科技有限公司 | Rotation type disc pearl sieving mechanism |
| CN111957577A (en) * | 2020-08-07 | 2020-11-20 | 泰山学院 | Concrete is with screening sand machine in succession in grades |
| CN111957577B (en) * | 2020-08-07 | 2021-07-27 | 泰山学院 | Continuous grading sand screening machine for concrete |
| CN114405644A (en) * | 2022-01-21 | 2022-04-29 | 上海山美环保装备股份有限公司 | Dry aggregate pre-sorting system and floor type sand making process system |
| CN114405644B (en) * | 2022-01-21 | 2023-09-26 | 上海山美环保装备股份有限公司 | Dry aggregate pre-sorting system and building-type sand making process system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100395040C (en) | 2008-06-18 |
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Granted publication date: 20080618 Termination date: 20100108 |