CN106454678A - Pin type microphone detecting device - Google Patents
Pin type microphone detecting device Download PDFInfo
- Publication number
- CN106454678A CN106454678A CN201610910103.0A CN201610910103A CN106454678A CN 106454678 A CN106454678 A CN 106454678A CN 201610910103 A CN201610910103 A CN 201610910103A CN 106454678 A CN106454678 A CN 106454678A
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- Prior art keywords
- contact pin
- substrate
- pin
- station
- plate
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a pin type microphone detecting device, relating to the technical field of detecting device. The pin type microphone detecting device comprises a bottom board and a base board, wherein a feedstock guide rail is arranged on the left end of the base board, a linear vibrator is arranged between the feedstock guide rail and the bottom board, a circular cavity is arranged on the top surface of the base board, a disk is arranged in the circular cavity, a vertical spindle is arranged in the center of the circular cavity, a cam graduator connected with the spindle is arranged on the bottom board, four limit notches are circumferentially arranged in the edge of the disc, a pin correcting board is arranged right above the detecting station on the base board, two pin location holes are arranged on the pin correcting board, two nether cone holes coaxially connected with the pin location holes are arranged on the nether side of the pin correcting board, an elevating mechanism of the pin correcting board is arranged on the base board, a detecting head component is arranged on the pin correcting board, a sound hole is arranged at the detecting station on the undersurface of the circular cavity, and the sound source connected with the sound hole is arranged on the bottom board. The pin type microphone detecting device disclosed by the invention has a beneficial effect that the feeding is stabile, the detecting efficiency is high, and the detecting accuracy is high.
Description
Technical field
The present invention relates to detect device technique field, particularly relate to a kind of pin type miaow head detection device.
Background technology
Miaow head is being commonly called as of microphone, and the species of miaow head is a lot, can be divided into bonding wire type miaow head, contact pin according to pin difference
Type miaow head, patch-type miaow head.The structure of pin type miaow head (is just generally including shell, back pole plate, film ring, pcb board, two contact pins
Negative pole pin), these parts are just made for complete pin type miaow head by crimping machine edge sealing, before miaow head dispatches from the factory after assembling
Have to detect, also cry sorting, i.e. filter out the product of DB value (sensitivity) scope meeting the requirements of the customers, with a collection of miaow
After head manufactures, its DB value is in a wider scope, and different clients is worth area requirement different for DB,
It is thus desirable to carried out detecting by detecting the DB value to all of miaow head for the device, sort, i.e. provide a source of sound to miaow head, then
Specified electric current is provided between individual contact pin, detects the voltage between two contact pins, then automatically calculate DB value according to voltage.
Current detection mode is divided into manual detection and machine automatically to detect, and manual detection efficiency is low, is progressively washed in a pan
Eliminate；Machine detection efficiency improves a lot, and two contact pins of pin type miaow head require vertical with pcb board in theory, during detection two
It is connected, detects by root probe and two contact pins, but the contact pin of the most of miaow head produced all is difficult to keep and pcb board
Completely vertical, the angle of contact pin and pcb board is qualified products between 80 degree of-90 degree, and this results in actually detected process
In, the contact position between probe from contact pin is different, thus produces different contact resistances, after being passed through electric current between contact pin, by
There are differences in contact resistance, there is deviation in the magnitude of voltage therefore obtaining and actual value, accuracy of detection is relatively low, in particular for mesh
Some high-end digital products front, this kind of detection error is fatal for enterprise, it is likely that owing to detection error causes bus
Run off in family.
Content of the invention
The present invention is to solve the problem that miaow head of the prior art detection device precision is low, provide a kind of detection efficiency
The pin type miaow head detection device high, accuracy of detection is high.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of pin type miaow head detection device, including the substrate that base plate is parallel with base plate, the bottom surface both sides of described substrate are by erecting
Plate is fixing with base plate to be connected, and the left end of described substrate is provided with feed lead rail, is provided with straight line and shakes between described feed lead rail and base plate
Dynamic device, the end face of described substrate is provided with circular-shaped, concave cavity, is provided with disk, at the bottom of described disk and circular-shaped, concave cavity in described circular-shaped, concave cavity
Being provided with charging gap between face, the center of described circular-shaped, concave cavity is provided with vertical rotating shaft, and described base plate is provided with and is connected with rotating shaft
Cam protractor, the input of described cam protractor is provided with driving motor, and the output of cam protractor is connected with rotating shaft,
The upper end of described rotating shaft and the center of disk are fixing to be connected, the edge of described disk be circumferentially uniformly provided with four spacing scarce
Mouthful, the openend of described spacing breach is provided with guiding breach, and on substrate, the rotation direction along disk is respectively equipped with spacing with four
Breach feed station one to one, detection station, defective products discharging station, non-defective unit discharging station, feed station is led with charging
Rail connects；The surface being positioned at detection station on described substrate is provided with contact pin rectification plate, and described contact pin rectification plate is provided with two
Individual contact pin positions hole, and contact pin rectification plate downside is provided with the lower cone hole with contact pin positioning hole coaxial communication, and substrate is provided with slotting
Pin rectification plate elevating mechanism, described contact pin rectification plate be arranged over detect head assembly, the bottom surface of described circular-shaped, concave cavity is positioned at
Being provided with sound hole at detection station, described base plate is provided with the source of sound being connected with sound hole.
Drive motor by cam protractor drive disk do batch (-type) rotary motion, miaow head enter from feed lead rail into
At material station, two on miaow head piece contact pin is spacing in entering spacing breach, and the miaow head at feed station is moved to by disk rotational
At detection station, contact pin rectification plate declines, and contact pin is introduced into lower cone hole and enters in contact pin positioning hole along the conical surface, now two
The position of contact pin is corrected, and two pin contact pins are all vertical with pcb board, is then connected with contact pin by detection head assembly, often again
During the detection of individual miaow head, the position consistency of contact pin, so that contact resistance during detection is consistent, reduces detection error, improve inspection
Survey precision；After tested, if its DB value is not in the range of setting (defective products), then miaow head is from defective products discharging work for miaow head
Discharge at Wei, if the DB value of miaow head is in the range of setting, then discharge at non-defective unit discharging station.
As preferably, described contact pin rectification plate elevating mechanism includes two vertical guide pillars, the lower end of guide pillar and substrate
Fixing connection, is slidably connected between described contact pin rectification plate and guide pillar, described substrate is additionally provided with contact pin rectification plate screw thread even
The vertical screw rod connecing, the bottom surface of described substrate is provided with the motor being connected with screw rod.Driven by motor screw rod rotates and realizes contact pin
Moving up and down of rectification plate.
As preferably, described contact pin rectification plate be arranged over gripper shoe, the two ends of described gripper shoe respectively by
Dagger is fixing with substrate to be connected, and described gripper shoe is provided with lift cylinder, and described detection head assembly is fixed on the axle of lift cylinder
End.The axle head of lift cylinder stretches and realizes being contacting and separating of detection head assembly and contact pin.
As preferably, described detection head assembly includes connecting plate, two three-jaw chucks, and the upper end of described three-jaw chuck sets
Having connection post, connecting and threaded between post and connecting plate, the axis of three-jaw chuck is coaxial with contact pin positioning hole；Described contact pin is rectified
The upper side of positive plate is provided with the upper taper hole with contact pin positioning hole coaxial communication.After contact pin enters in contact pin positioning hole, three-jaw presss from both sides
Set declines and is enclosed within outside contact pin, and three-jaw chuck continues to be clamped contact pin by the effect of upper taper hole when declining, thus realizes two
Electrical connection between person, then detects.
As preferably, the three-jaw inwall of described three-jaw chuck is equipped with electroconductive resin coating.There is hair in some pin heads
Thorn, if when three-jaw chuck contacts with contact pin can therefore burr and cause loose contact, by electroconductive resin coating in this structure
Hold tightly with contact pin and contact, even if pin head exists burr and also ensures that both directly completely attach to, thus keep contact resistance
Uniformity is good, improves accuracy of detection.
As preferably, described substrate is positioned at defective products discharging station and is provided with the discharging connecting with circular-shaped, concave cavity and leads to
Road, the bottom surface of described circular-shaped, concave cavity is positioned at and is provided with horizontal pushing block at defective products discharging station, the downside of described substrate sets
There is the pusher cylinder that the horizontal pushing block of driving moves；It is positioned on the bottom surface of described circular-shaped, concave cavity and be provided with blanking at non-defective unit discharging station
Hole.When being judged to defective products after the detection of miaow head, disk drives miaow head to defective products discharging station, and now pusher cylinder drives water
Horizontal sliding block moves, thus defective products miaow head is released at tapping channel.
As preferably, the head of described horizontal pushing block is provided with v-notch, and the top that described substrate is positioned at tapping channel sets
Having material blocking rod, one end of described material blocking rod is connected with substrate by rotating bar, and described rotation bar is provided with torsion spring.Material blocking rod energy
Prevent the centrifugal force producing during disk rotational from throwing away miaow head at tapping channel.
As preferably, the discharge end both sides of described feed lead rail are respectively provided with a piece of guide plate, form Y between two panels guide plate
Shape regulates gap.The direction of Y shape regulation gap energy just successive step contact pin, the contact pin of such miaow head can more quickly enter spacing
In breach.
As preferably, the bottom surface of described circular-shaped, concave cavity is positioned at feed station and is provided with infrared reflection sensor.Infrared
Line reflection sensor is used for detecting whether miaow head enters in feed station, if miaow head does not enters in spacing breach, drives electricity
Chance stops operating, until the contact pin of miaow head is completely in spacing breach, drives motor just can rotate, it is ensured that stable charging.
Therefore, the present invention has the beneficial effect that charging is stable, detection efficiency is high, accuracy of detection is high.
Brief description
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the connection diagram of feed lead rail and substrate.
Fig. 3 is close-up schematic view at A in Fig. 1.
Fig. 4 is contact pin rectification plate, the structural representation of detection head assembly.
Fig. 5 is the structural representation that miaow head is in detection state.
Fig. 6 is close-up schematic view at B in Fig. 4.
Fig. 7 is the cross sectional representation of three-jaw chuck.
In figure：The 6th, base plate the 1st, substrate the 2nd, feed lead rail the 3rd, disk the 4th, rotating shaft the 5th, spacing breach guides breach the 7th, infrared reflection
The 12nd, sensor the 8th, tapping channel the 9th, horizontal pushing block the 10th, v-notch the 11st, material blocking rod rotates bar the 13rd, material-dropping hole the 14th, contact pin rectification plate
15th, the 20th, guide pillar the 16th, screw rod the 17th, motor the 18th, gripper shoe the 19th, circular-shaped, concave cavity feeds gap the 21st, sound hole the 22nd, support column the 23rd, lifting air
It is fixed that the 26th, cylinder the 24th, connecting plate the 25th, three-jaw chuck connects post the 27th, electroconductive resin coating the 28th, guide plate the 30th, Y shape deflector chute the 31st, contact pin
The 200th, position hole the 150th, lower cone hole the 151st, upper taper hole the 152nd, feed station detects station the 201st, defective products discharging station the 202nd, non-defective unit and goes out
Material station the 203rd, miaow head the 100th, contact pin 101.
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings：
A kind of pin type miaow head detection device as depicted in figs. 1 and 2, including the substrate 2 that base plate 1 is parallel with base plate, the end of substrate
Both sides, face are connected by riser and base plate are fixing, and the left end of substrate is provided with feed lead rail 3, are provided with straight between feed lead rail and base plate
Linearly coupled device, the left end of feed lead rail is connected with vibrating disk；The end face of substrate 2 is provided with circular-shaped, concave cavity 20, is provided with in circular-shaped, concave cavity
Disk 4, as shown in Figure 4, is provided with charging gap 21 between disk and circular-shaped, concave cavity bottom surface, it is vertical that the center of circular-shaped, concave cavity is provided with
Rotating shaft 5, base plate is provided with the cam protractor being connected with rotating shaft, and the input of cam protractor is provided with driving motor, and cam divides
The output of degree device is connected with rotating shaft, and the upper end of rotating shaft is fixing with the center of disk 4 to be connected, as it is shown on figure 3, the edge of disk
Circumferentially being uniformly provided with four spacing breach 6, the openend of spacing breach is provided with guiding breach 7, the discharge end two of feed lead rail 3
Side is respectively provided with a piece of guide plate 30, forms Y shape regulation gap 31, along the rotation direction of disk on substrate 2 between two panels guide plate
It is respectively equipped with four spacing breach feed station one to one that the 200th, to detect station the 201st, defective products discharging station the 202nd, good
Product discharging station 203, feed station is connected with feed lead rail；
It is positioned on the bottom surface of circular-shaped, concave cavity 20 at feed station and be provided with infrared reflection sensor 8；The bottom surface of circular-shaped, concave cavity is upper
Being provided with sound hole 22 at detection station, base plate is provided with the source of sound being connected with sound hole；It is positioned on substrate 2 at defective products discharging station
It is provided with the tapping channel 9 connecting with circular-shaped, concave cavity 20, the bottom surface of circular-shaped, concave cavity 20 is positioned at and at defective products discharging station, is provided with water
Horizontal sliding block 10, the downside of substrate is provided with the pusher cylinder that the horizontal pushing block of driving moves, and the head of horizontal pushing block 10 is provided with V-type
Breach 11, what substrate was positioned at tapping channel is arranged over material blocking rod 12, and one end of material blocking rod is by rotating bar 13 with substrate even
Connect, rotate bar and be provided with torsion spring；It is positioned on the bottom surface of circular-shaped, concave cavity 20 and be provided with material-dropping hole 14 at non-defective unit discharging station.
As shown in Figure 4 and Figure 5, surface substrate 2 being positioned at detection station is provided with contact pin rectification plate 15, contact pin rectification plate
15 are provided with two contact pin positioning holes 150, and contact pin rectification plate downside is provided with the lower cone hole with contact pin positioning hole coaxial communication
151, the upper side of contact pin rectification plate is provided with the upper taper hole 152 with contact pin positioning hole coaxial communication, and substrate 2 is provided with contact pin and rectifys
Positive plate elevating mechanism, contact pin rectification plate elevating mechanism includes two vertical guide pillars 16, and the lower end of guide pillar is fixing with substrate to be connected,
It is slidably connected between contact pin rectification plate and guide pillar, described substrate is additionally provided with the vertical screw rod threadeded with contact pin rectification plate
17, the bottom surface of substrate is provided with the motor 18 being connected with screw rod；
Contact pin rectification plate 15 be arranged over gripper shoe 19, the two ends of gripper shoe are fixing even by support column 23 and substrate respectively
Connecing, gripper shoe is provided with lift cylinder 24, and the axle head of lift cylinder is provided with detection head assembly, as shown in Figure 6 and Figure 7, detects head
Assembly includes connecting plate the 25th, two three-jaw chucks 26, and the upper end of three-jaw chuck is provided with connection post 27, connects between post and connecting plate
Threaded, the axis of three-jaw chuck is coaxial with contact pin positioning hole, and the three-jaw inwall of three-jaw chuck is equipped with electroconductive resin coating
28.
In conjunction with accompanying drawing, the using method of the present invention is as follows：Motor is driven to drive disk to do batch (-type) by cam protractor
Rotary motion, miaow head 100 first passes through Y shape regulation gap from feed lead rail, and now the direction of contact pin 101 is tentatively conditioned, miaow
When head enters feed station, two on miaow head piece contact pin is spacing in entering spacing breach, and disk rotational, by the miaow at feed station
Head move to detection station at, electric machine rotation by screw rod drive contact pin rectification plate decline, contact pin be introduced into lower cone hole and along
The conical surface enters in contact pin positioning hole, and now the position of two contact pins is corrected, and two pin contact pins are all vertical with pcb board, then lift
Cylinder drives detection head assembly to decline, and two three-jaw chucks are respectively protruding in taper hole, and contact pin upper end enters in three-jaw chuck, and three
Pawl chuck clamps contact pin, electroconductive resin coating and contact pin contacts side surfaces under the effect of the upper conical surface, and three-jaw chuck upper end is by number
Access in detecting instrument according to line；During the detection of each miaow head, the position consistency of contact pin, so that contact resistance when detecting every time
Unanimously, reduce detection error, improve accuracy of detection；Miaow head after tested, if its DB value not set in the range of (bad
Product), when miaow head enters at defective products discharging station, pusher cylinder drives horizontal pushing block to release defective products at tapping channel；
And the DB value of miaow head is in the range of setting, then blanking port at non-defective unit discharging station is discharged, thus realize non-defective unit with bad
The separation of product.
Claims (9)
1. a pin type miaow head detection device, including the substrate that base plate is parallel with base plate, the bottom surface both sides of described substrate are passed through
Riser is fixing with base plate to be connected, and the left end of described substrate is provided with feed lead rail, is provided with straight line between described feed lead rail and base plate
Vibrator, is characterized in that, the end face of described substrate is provided with circular-shaped, concave cavity, is provided with disk, described disk in described circular-shaped, concave cavity
And being provided with charging gap between circular-shaped, concave cavity bottom surface, the center of described circular-shaped, concave cavity is provided with vertical rotating shaft, described base plate sets
Having the cam protractor being connected with rotating shaft, the input of described cam protractor is provided with driving motor, the output of cam protractor
End is connected with rotating shaft, and the upper end of described rotating shaft is fixing with the center of disk to be connected, and the edge of described disk circumferentially uniformly sets
Having four spacing breach, the openend of described spacing breach is provided with guiding breach, and on substrate, the rotation direction along disk sets respectively
Have and four spacing breach feed station one to one, detection station, defective products discharging station, non-defective unit discharging station, charging
Station is connected with feed lead rail；The surface being positioned at detection station on described substrate is provided with contact pin rectification plate, and described contact pin is rectified
Positive plate is provided with two contact pin positioning holes, and contact pin rectification plate downside is provided with the lower cone hole with contact pin positioning hole coaxial communication,
Substrate is provided with contact pin rectification plate elevating mechanism, described contact pin rectification plate be arranged over detect head assembly, described circular-shaped, concave cavity
Bottom surface on be positioned at detection station at be provided with sound hole, described base plate is provided with the source of sound being connected with sound hole.
2. a kind of pin type miaow head detection device according to claim 1, is characterized in that, described contact pin rectification plate lifting
Mechanism includes two vertical guide pillars, and the lower end of guide pillar is fixing with substrate to be connected, and slides between described contact pin rectification plate and guide pillar
Connect, described substrate is additionally provided with the vertical screw rod threadeded with contact pin rectification plate, the bottom surface of described substrate be provided with
The motor that screw rod connects.
3. a kind of pin type miaow head detection device according to claim 1, is characterized in that, described contact pin rectification plate upper
Side is provided with gripper shoe, and the two ends of described gripper shoe are connected by support column and substrate are fixing respectively, and described gripper shoe is provided with liter
Sending down abnormally ascending cylinder, described detection head assembly is fixed on the axle head of lift cylinder.
4. a kind of pin type miaow head detection device according to claim 3, is characterized in that, described detection head assembly includes
Connecting plate, two three-jaw chucks, the upper end of described three-jaw chuck is provided with connection post, connects and threadeds between post and connecting plate,
The axis of three-jaw chuck is coaxial with contact pin positioning hole；The upper side of described contact pin rectification plate is provided with and coaxially connects with contact pin positioning hole
Logical upper taper hole.
5. a kind of pin type miaow head detection device according to claim 4, is characterized in that, in the three-jaw of described three-jaw chuck
Wall is equipped with electroconductive resin coating.
6. a kind of pin type miaow head detection device according to claim 1, is characterized in that, described substrate is positioned at bad
It is provided with the tapping channel connecting with circular-shaped, concave cavity at product discharging station, the bottom surface of described circular-shaped, concave cavity is positioned at defective products discharging work
Being provided with horizontal pushing block at Wei, the downside of described substrate is provided with the pusher cylinder that the horizontal pushing block of driving moves；Described circle is recessed
It is positioned on the bottom surface in chamber and be provided with material-dropping hole at non-defective unit discharging station.
7. a kind of pin type miaow head detection device according to claim 6, is characterized in that, the head of described horizontal pushing block sets
Have v-notch, described substrate be positioned at the material blocking rod that is arranged over of tapping channel, one end of described material blocking rod by rotate bar with
Substrate connects, and described rotation bar is provided with torsion spring.
8. a kind of pin type miaow head detection device according to claim 1, is characterized in that, the discharge end of described feed lead rail
Both sides are respectively provided with a piece of guide plate, form Y shape regulation gap between two panels guide plate.
9. a kind of pin type miaow head detection device according to claim 1, is characterized in that, on the bottom surface of described circular-shaped, concave cavity
It is positioned at feed station and be provided with infrared reflection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610910103.0A CN106454678A (en) | 2016-10-12 | 2016-10-12 | Pin type microphone detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610910103.0A CN106454678A (en) | 2016-10-12 | 2016-10-12 | Pin type microphone detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106454678A true CN106454678A (en) | 2017-02-22 |
Family
ID=58176324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610910103.0A Pending CN106454678A (en) | 2016-10-12 | 2016-10-12 | Pin type microphone detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106454678A (en) |
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| CN201684732U (en) * | 2010-04-09 | 2010-12-29 | 福建省德传电子科技有限公司 | Fully automatic electret microphone tester |
| CN102495301A (en) * | 2011-11-14 | 2012-06-13 | 福建联迪商用设备有限公司 | Testing device and testing method of narrow interval pin headers on PCB (printed circuit board) |
| CN202856139U (en) * | 2012-09-10 | 2013-04-03 | 中国核工业二三建设有限公司 | Aligning and positioning tool for welding coaxial cable contact pins |
| CN203265084U (en) * | 2013-04-28 | 2013-11-06 | 东莞市台工电子机械科技有限公司 | Full-automatic digital microphone testing sorter |
| CN104874550A (en) * | 2015-04-13 | 2015-09-02 | 浙江理工大学 | Microphone sorting device capable of charging automatically |
| CN104891139A (en) * | 2015-04-20 | 2015-09-09 | 傅晓琳 | Microphone feeding mechanism capable of being directly abutted against conveying belt |
| CN104907267A (en) * | 2015-04-13 | 2015-09-16 | 浙江理工大学 | Pin-type microphone fast sorting device |
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2016
- 2016-10-12 CN CN201610910103.0A patent/CN106454678A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050034303A (en) * | 2003-10-09 | 2005-04-14 | 에버테크노 주식회사 | Microphone auto-testing system |
| CN201118988Y (en) * | 2007-10-26 | 2008-09-17 | 何纪法 | Mic header testing device |
| CN201684732U (en) * | 2010-04-09 | 2010-12-29 | 福建省德传电子科技有限公司 | Fully automatic electret microphone tester |
| CN102495301A (en) * | 2011-11-14 | 2012-06-13 | 福建联迪商用设备有限公司 | Testing device and testing method of narrow interval pin headers on PCB (printed circuit board) |
| CN202856139U (en) * | 2012-09-10 | 2013-04-03 | 中国核工业二三建设有限公司 | Aligning and positioning tool for welding coaxial cable contact pins |
| CN203265084U (en) * | 2013-04-28 | 2013-11-06 | 东莞市台工电子机械科技有限公司 | Full-automatic digital microphone testing sorter |
| CN104874550A (en) * | 2015-04-13 | 2015-09-02 | 浙江理工大学 | Microphone sorting device capable of charging automatically |
| CN104907267A (en) * | 2015-04-13 | 2015-09-16 | 浙江理工大学 | Pin-type microphone fast sorting device |
| CN104891139A (en) * | 2015-04-20 | 2015-09-09 | 傅晓琳 | Microphone feeding mechanism capable of being directly abutted against conveying belt |
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Application publication date: 20170222 |
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