CN102435614A

CN102435614A - Reverse cover screening system

Info

Publication number: CN102435614A
Application number: CN2011103996805A
Authority: CN
Inventors: 章峰
Original assignee: Epcos Technology Wuxi Co Ltd
Current assignee: RF360 Technology Wuxi Co Ltd
Priority date: 2011-12-06
Filing date: 2011-12-06
Publication date: 2012-05-02
Anticipated expiration: 2031-12-06
Also published as: CN102435614B

Abstract

The invention provides a reverse cover screening system which can improve the efficiency of automatically screening reverse covers and well avoids product appearance and performance defects. The reverse cover screening system comprises a vibration plate, wherein the vibration plate is provided with a circular orbit, the tail end of the circular orbit is provided with a pickup orbit, the pickup orbit is a section of straight vibration orbit, and an optical recognition system is positioned in front of the pickup orbit and above the circular orbit. The reverse cover screening system provided by the invention is characterized in that the initial position of the circular orbit is provided with a pre-screening area, a first inductor is arranged in the pre-screening area, the first inductor is positioned at the edge of a cover close to the inner side of the circular orbit, the middle section of the circular orbit is provided with a second inductor, the second inductor is positioned at the frontmost edge of the cover along the advancing direction of the orbit, and an optical lens of the optical recognition system faces the frontmost edge of the cover on the circular orbit along the advancing direction of the orbit.

Description

The other system of sieve that a kind of lid is reverse

Technical field

The present invention relates to SMD (surface mount device) product packaging technology, the other system of sieve of a series of functions such as the positive and negative classification of particularly special gold-tin alloy lid, identification, screening is specially the other system of the reverse sieve of a kind of lid.

Background technology

Along with communication, the fast development of relevant industries such as electronics, the encapsulation of SMD product requires also increasingly high, and any encapsulation defective all can not be accepted by the client.The SMD product comprises lid and shell; Lid and shell are assembled into one are called encapsulation, adopt golden tin solder Reflow Soldering technology, through moment high temperature lid welded with ceramic package be fixed up; And in actual production process, tend to occur defective anti-on the lid.Fig. 1 sees in the reverse other system of sieve of existing lid, is the principle of work that adopts optical recognition system, and optical recognition system 7 is arranged on the vibrating disk top; Be positioned at lid 2 and pick up track 8 the place aheads; Its optical lens face be placed on the vibrating disk, the complete area 3 of 1 lid 2 on the circuit orbit, can utilize the different reflective characteristic in lid positive and negative to sieve through optical recognition system and not go out reverse lid, still; Because the difference characteristic of golden tin solder lid surface is not obvious; There is certain fluctuation again in the solder characteristics of lid surface, and therefore the reverse other system of sieve of existing lid can't choose reverse lid fully, and just the lid by the band defective has got into the lid picking region; Cause the other efficient of sieve lower, finally influence product quality.

Summary of the invention

To the problems referred to above, the invention provides the other system of the reverse sieve of a kind of lid, can improve reverse other efficient of lid Automatic sieve, avoided product appearance and performance deficiency well.

Its technical scheme is such: its involving vibrations dish; On said vibrating disk, be provided with circuit orbit, pick up track in the end setting of said circuit orbit, the said track that picks up is one section track that directly shakes; Above said circuit orbit; Be positioned at the said track the place ahead of picking up optical recognition system is set, it is characterized in that: the initial position of said circuit orbit is the prescreen zone, in said prescreen zone first inductor is set; Said first inductor is positioned near the inboard lid edge of track; The stage casing of said circuit orbit is provided with second inductor, and said second inductor is positioned at the edge foremost along the track direct of travel of said lid, and the optical lens of said optical recognition system is facing to the edge foremost along the track direct of travel of the said lid on the said circuit orbit.

Its further characteristic also is: said first inductor is highly sensitive optical fiber digital display inductor; Said second inductor is an optical recognition system external trigger inductor; Saidly pick up the end that track is said circuit orbit; At the said head end that picks up track the material inductor is set etc.

The present invention adopts after the said structure, with on the circuit orbit, the initial position placed of lid is made as the prescreen zone, in the prescreen zone first inductor is set; And this inductor is arranged at lid edge, and like this, the front and the smooth existence of reverse side that make full use of golden its edge scolder of tin solder lid are than the big-difference characteristics; Filter out most reverse lid in advance, also because this process of sieving in advance makes that continuity is arranged on circuit orbit, turn to the circuit orbit stage casing simultaneously; Just the lid of the position of optical recognition system is upset; Become uncontinuity, form single lid and advance in orbit, more help optical recognition system and accurately discern; In addition, in the circuit orbit stage casing second inductor is set, this inductor is arranged on the lid leading edge; Cooperate optical recognition system to play a role; Make optical recognition system can get into recognizer in advance, simultaneously the optical lens of optical recognition system is faced toward the edge foremost of the lid on the circuit orbit, enlarged the identification range of optical recognition system like this lid; Improve the recognition capability of optical recognition system, thereby guarantee screening effeciency; And first inductor adopts highly sensitive optical fiber digital display inductor, and second inductor adopts optical recognition system external trigger inductor, has further improved the recognition capability and the screening effeciency of optical recognition system; In addition, wait the setting of material inductor, in case there is lid to come, pick device can receive signal in the very first time and pick up, and can further guarantee the quality of screening effeciency and product like this.

Description of drawings

Fig. 1 is the prior art constructions synoptic diagram;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is a forward lid front view;

Fig. 4 is reverse lid front view;

Fig. 5 acts on the fundamental diagram of forward lid for highly sensitive optical fiber digital display inductor;

Fig. 6 acts on the fundamental diagram of reverse lid for highly sensitive optical fiber digital display inductor.

Embodiment

See Fig. 2, the present invention includes vibrating disk, on vibrating disk, be provided with circuit orbit 1; Lid 2 places on the circuit orbit 1, with on the circuit orbit 1, the initial position placed on it of lid 2 is made as prescreen zone 3, in prescreen zone 3 first inductor 4 is set; First inductor 4 is a highly sensitive optical fiber digital display inductor (Keyemce fiber sensor), and first inductor 4 is positioned at the edge of circuit orbit 1 inboard, lid 2, lid 2 oblong tracks 1 Centrifugal vibration; It is optical recognition system external trigger inductor that the middle section position 5 of circuit orbit 1 is provided with second inductor, 6, the second inductors 6, and second inductor 6 is positioned at the edge of lid; Optical recognition system 7 is positioned at the top of circuit orbit middle section position 5, picks up the place ahead of track 8, and its optical lens 7-1 is facing to the edge foremost along the track direct of travel of the lid 2 on the circuit orbit 1; Pick up the end that track 8 is circuit orbit; That is the end that picks up directly at circuit orbit 1 of lid 2 carries out, and 9 for picking up inductor among the figure, is provided with at the head end that picks up track 8 12 places etc. to expect inductor 10; When lid goes to this position; Sense the edge of lid 2 Deng material inductor 10, this moment from etc. the location point of material inductor 10 to the end that picks up track 8, both picked up the location point of inductor 9; Arranged out a part of qualified lid and waited and pick up, therefore this design has improved the work efficiency of picking up lid.

Below in conjunction with the description of drawings course of work of the present invention, and utilize the principle of work of highly sensitive optical fiber digital display inductor to the lid prescreen:

See Fig. 2, Fig. 3, Fig. 4; Go the lid 2 behind the static to pour in the vibrating disk degaussing through manually-operated; Press the button of starting working then, lid 2 is transported to prescreen zone 3 by the circuit orbit on the vibrating disk 1 automatically, after judging through highly sensitive optical fiber digital display inductor 4; The lid 2 of forward is let slip, and is advanced into the middle section position 5 of circuit orbit 1 before the continuation; Sense the edge of lid 2 when being arranged on the optical recognition system external trigger inductor 6 here; Optical recognition system 7 is promptly started working; Through judging that the reverse lid 2 that belongs to is blown back in the vibrating disk; Again circulation, and process optical recognition system 7 is judged as the lid 2 of forward, is then let slip and continues to move ahead; When forward lid 2 arrives head end 12 places of picking up track 8; After expecting that inductor 10 is sensed the edge of forward lid 2; Forward lid 2 just is in and begins to wait for the state that picks up, and picks up track 8 and arrives track ends when forward lid 2 gets into, after picking up inductor 9 and sensing forward lid 2; Automatically forward lid 2 (not providing automatic pick-up head among the figure) is picked up in pick-up head work, and pick-up head is put into forward lid 2 the lid pallet (figure does not provide the lid pallet) of program appointment automatically automatically.

See Fig. 2, Fig. 5, Fig. 6; When forward lid 2 got into the prescreen zone 3 on the circuit orbits 1, the highly sensitive optical fiber digital display inductor 4 that is positioned at lid edge was sensed lid 2, and the optical fiber inductive head 4-1 that connects it on just receives the light that comes from lid 2 edges and reflects; Because the forward lid edge has golden tin solder circle 11; So that the light that optical fiber inductive head 4-1 receives reflection is less, highly sensitive optical fiber digital display inductor 4 is judged as no reflection events, the digital display value is 0; When reverse lid 2 gets into the prescreen zone 3 on the circuit orbits 1; The highly sensitive optical fiber digital display inductor 4 that is positioned at reverse lid 2 edges is sensed reverse lid 2; The optical fiber inductive head 4-1 that connects on it just receives the light reflection that comes from reverse lid 2 edges, and because reverse lid 2 edges do not have golden tin solder circle 11, institute is so that the light that optical fiber inductive head 4-1 receives reflects more; Highly sensitive optical fiber digital display inductor 4 has been judged as reflection, and the digital display value is 1.

Claims

1. other system of sieve that lid is reverse, its involving vibrations dish is provided with circuit orbit on said vibrating disk; Track is picked up in end setting at said circuit orbit; The said track that picks up is one section track that directly shakes, and above said circuit orbit, is positioned at the said track the place ahead of picking up optical recognition system is set; It is characterized in that: the initial position of said circuit orbit is the prescreen zone; In said prescreen zone first inductor is set, said first inductor is positioned near the inboard lid edge of track, and the stage casing of said circuit orbit is provided with second inductor; Said second inductor is positioned at the edge foremost along the track direct of travel of said lid, and the optical lens of said optical recognition system is facing to the edge foremost along the track direct of travel of the said lid on the said circuit orbit.

2. the other system of sieve that a kind of lid according to claim 1 is reverse is characterized in that: said first inductor is highly sensitive optical fiber digital display inductor.

3. the other system of sieve that a kind of lid according to claim 1 is reverse is characterized in that: said second inductor is an optical recognition system external trigger inductor.

4. the other system of sieve that a kind of lid according to claim 1 is reverse is characterized in that: saidly pick up the end that track is said circuit orbit.

5. the other system of sieve that a kind of lid according to claim 4 is reverse is characterized in that: at the said head end that picks up track the material inductor is set etc.