TW201625984A - Method and device for detection of feeding material - Google Patents

Abstract

A method and a device for detection of feeding material are disclosed, including: providing a material feeding channel, wherein a detection zone is formed; providing a detection pathway, wherein a light source transmitting signal is provided by an LED light source, and received by a photoelectric sensor through light energy guiding and delivering of an optical fiber with the LED light; having the material feeding channel and the detection pathway intersected in the detection zone, thereby enabling the feeding material to be detected when it is fed in the material feeding channel and passing through the detection zone.

Description

Blanking detection method and device

The invention relates to a detecting method and device, in particular to a blanking detecting method and device for detecting tiny electronic components falling through a channel.

According to the general electronic components, because of their different physical properties, they often need to be packaged or sorted through the process of detection and sorting. Due to the miniaturization and large quantity of electronic components, the devices used for detection and sorting must be provided quickly. With precise transport, these detected and sorted electronic components such as passive components or LED light-emitting diodes.

In the prior art, when the test is performed, a test wheel which can be intermittently rotated is used, and a groove having an equally spaced recess is arranged in the circumference of the test disc, whereby the transport channel of the self-vibration feeder carries the detected component to intermittently rotate. Road transport, after passing through the procedures of multiple test stations, according to the physical characteristics detected by them, and classified by the sorting mechanism according to the detection results of the detected components, and discharged to different classification tubes for delivery to a specific collection The container is collected; the detected component must be inspected by the detection container when it falls into the collection container to determine the number of detected components falling into the particular collection container. On the other hand, the detection count is used to confirm whether the discharge is Smooth.

The method and device for detecting the prior art are, for example, the patent No. M377579 "Small component detecting device" which the applicant has obtained, which is used to check whether the material passes, mainly consisting of two groups corresponding to each other and having a light beam ( a fiber optic) transmitter, a beam (fiber) receiver, and a detector in the interval between the two detection modules, in the detector A channel having a diameter smaller than the beam diameter is provided for the beam of the detection module to pass through, and the area to be tested is narrowed by the channel guide specification, and the small component is sensed by the light passing through the channel.

However, the prior art detects the light beam passing through the detector by using a beam (fiber) transmitter and a beam (fiber) receiver. Since the channel through which the beam passes is smaller than the beam diameter, the tiny gap makes the beam The transmitted and received signals are rather weak and unstable, and the detection effect is still not satisfactory when the speed of the detected components passing through is relatively fast and the volume is quite small! Therefore, it is necessary to detect the two sets of beam (fiber) transmitters and beam (fiber) receivers in an interleaved manner, so the cost is relatively high and not economical!

Accordingly, it is an object of the present invention to provide a blanking detection method which is low in cost, high in stability and high in sensitivity.

Another object of the present invention is to provide an apparatus for performing the blanking detection method according to any one of claims 1 to 9 of the application.

The blanking detection method according to the object of the present invention comprises: providing a blanking passage, wherein a detecting area is formed therein; providing a detecting path in which an LED light source is provided with a light source to emit a signal, and the optical light is transmitted through the optical fiber The light energy of the LED light source is transmitted to the photo-sensing device for signal reception; the blanking channel and the detection path meet in the detection interval, so that the detected component is inspected when it falls through the detection interval in the blanking channel. know.

A blanking detecting device according to another object of the present invention, comprising: a device for performing a blanking detecting method according to any one of claims 1 to 9.

The blanking detection method and device of the embodiment of the invention are only detected The corresponding sides of the area are detected to the detection area, and an LED light source is used to project the light source signal on one side, and the light energy of the LED light source is transmitted to the optical inductance detector after being received by the optical fiber on the other side. In addition to greatly reducing the cost, it is not necessary to detect in the slit, and the detected component 4 for capturing the fast falling and dropping channel can be more sensitive and fully grasped; and driven by a constant current circuit with a stable current. The LED light source and the passband filter amplifier perform signal filtering and the sensitivity adjustment circuit compares the signal size, so that the LED light source can be more stable and the sensitivity can be adjusted according to actual needs to achieve the optimization of the detection function; and the illumination detection circuit can monitor the LED. Whether the illuminance of the light source is attenuated to help detect and clean the first mask and the second mask in time. The first mask and the second mask can be used for the light source signal reception except for the LED light source to project through and through the fiber. In addition, it also has a blocking function for preventing the detected component from being caught in the first chamber and the second chamber of the detecting path.

1‧‧‧Transfer seat

11‧‧‧ Fixed seat

12‧‧‧Incoming channel

2‧‧‧Catalogue

21‧‧‧Connectors

3‧‧‧Detector

31‧‧‧Exhaust hole

32‧‧‧Detection interval

321‧‧‧Wall

322‧‧‧Wall

323‧‧‧ first gate

324‧‧‧second gate hole

33‧‧‧First room

34‧‧‧Second room

35‧‧‧LED light source

351‧‧‧Constant current circuit

36‧‧‧First mask

37‧‧‧Fiber

371‧‧‧Light Inductance Detector

372‧‧‧Photoelectric signal amplifier

373‧‧‧passband filter amplifier

374‧‧‧Signal Comparator

375‧‧‧Inductance adjustment circuit

376‧‧‧Signal Trigger Processing Circuit

377‧‧‧Open collector circuit

378‧‧‧Illumination detection circuit

38‧‧‧second mask

4‧‧‧Detected components

The first figure is a schematic perspective view of a blanking detection device in the embodiment of the present invention.

The second figure is a schematic view of blanking in the embodiment of the present invention.

The third figure is a schematic diagram of the detection circuit in the embodiment of the present invention.

As shown in the first and second figures, the embodiment of the present invention can be applied to the detecting device as shown in the figure, comprising: a transfer carrier 1 having a fixing seat 11 on one side thereof for driving the transfer carrier 1 The drive mechanism for shifting the distribution is coupled with the fixed mechanism, so that the transfer base 1 is moved on an X, Y path, and the displacement control of the drive mechanism and the transfer base 1 is not described in the present invention; The upper side of the seat 1 is coupled to the joint 21 at one end of a sorting tube 2, and the sorting tube 2 is ready for measurement. The fine materials such as the classified LEDs are transported by the measuring device from the top to the bottom by the measuring device, and are discharged to the discharge channel 31 of the detecting seat 3 at the lower end of the carrier 1, and are assigned to a predetermined one. The collection box, the measuring device of the front section of the sorting tube 2 and the collecting box after the discharge passage 31 are not described in the present invention.

Referring to the second and third figures, the transfer base 1 is provided with a feed passage 12 which is hollowed out and communicates with the classification pipe 2, and corresponds to the discharge hole 31 of the detection seat 3 fixedly disposed below; the detection seat 3 is provided with a detection section 32, which is a hollow section of a square section, and is surrounded by a group of walls 321 and 322 which are opposite to each other, and a group of first and second gates 323 and 324 which are relatively open. One end of the detecting section 32 is in communication with the sorting tube 2, and the other end is in communication with the discharge passage 31 of the detecting seat 3, and the three are connected together to form a blanking passage for the upper side of the detecting element 4 to be hollowed up from the top to the bottom. The detecting element 4 is discharged by the gas through the blanking passage through the discharge passage 31 of the detecting seat. Since the detecting member 4 is displaced in the blanking passage, the transfer carrier 1 is displaced to the preset collecting box, and discharged from the discharge passage 31. The detection component 4 will fall into the preset collection box; the detection section 32 has a first gate 323 communicating with a first chamber 33, and the other side is connected to a second chamber 34 by a second gate 324. , between the detection section 32, the first chamber 33, and the second chamber 34 And the three together form a light source signal detection path that is hollowed from one side to the other side; the blanking channel and the detection path meet in the detection interval 32; the first chamber in the detection path An LED light source 35 is provided with a light source emitting signal, and a first mask 36 made of a transparent material such as glass is disposed at a front gate 323 of the front surface; an optical fiber 37 is disposed in the second chamber 34 (for example, Most optical fiber splicing a second mask 38 made of a transparent material such as glass is disposed at the second gate 324 of the optical fiber 37. The first mask 36 and the second mask 38 respectively close the first gate 323 and the second gate 324. The detection zone 32 is surrounded by the surrounding walls 321 , 322 and the first mask 36 and the second mask 38 , and the LED light source 35 can only pass through the first mask. 36 is projected toward the detection section 32; the optical fiber 37 can only receive the light energy of the LED light source 35 from the detection section 32 via the second mask 38.

Referring to the third figure, the present invention adopts the LED light source 35 to project the detection method of the signal receiving by the optical fiber 37, and the constant current circuit 351 which can be adjusted slightly according to the actual demand drives the LED light source 35 to detect the current with a stable current. The section 32 projects the light source, and after receiving the optical fiber 37, the light energy of the LED light source 35 is guided to the photo-detector 371, and then the signal is amplified by the photoelectric signal amplifier 372, and filtered by the passband filter amplifier 373. The signal comparator 374 performs signal comparison by the control of the sensitivity adjustment circuit 375, acquires and converts the signals of 0 and 1 for digital control, and adjusts the output pulse time length according to the actual demand by the signal trigger processing circuit 376 to open the set. The pole circuit 377 outputs a trigger external external controller; and between the photoelectric signal amplifier 372 and the passband filtered signal amplifier 373, the illuminance detecting energy received by the photodetector 371 is compared by the illuminance detecting circuit 378 to monitor the brightness of the LED light source 35. Changes, if there is dust or LED aging, the brightness of the light source can be detected in time.

The blanking detection method and device of the embodiment of the present invention detects the light source signal by using one LED light source 35 on one side of the detecting area 32, and respectively, on one side corresponding to the detecting area 32, and the light source signal is respectively projected on one side. After the side is received by the optical fiber 37, the light energy of the LED light source 35 is guided to the photo-electrical sensor 371, which can be greatly reduced. In addition, it is not necessary to perform detection in the slit, and the detected component 4 for capturing the fast falling and dropping channel can be more sensitive and fully grasped; and the LED light source 35 is driven by the constant current circuit 355 with a stable current. The passband filter amplifier 373 performs signal filtering, and the sensitivity adjustment circuit 374 compares the magnitude of the signal, so that the LED light source 35 can be more stable and the sensitivity can be adjusted according to actual needs to achieve the optimization of the detection function; and the illumination detection circuit 377 can monitor Whether the illuminance of the LED light source is attenuated to help detect and clean the first mask 36 and the second mask 38 in time. The first mask 36 and the second mask 38 can be used for projecting the light through the LED light source 35 and the optical fiber. 37, through the light source signal reception, also has a blocking function for preventing the detection element 4 from being caught in the first chamber 33 and the second chamber 34 of the detection path.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

32‧‧‧Detection interval

321‧‧‧Wall

322‧‧‧Wall

35‧‧‧LED light source

351‧‧‧Constant current circuit

36‧‧‧First mask

37‧‧‧Fiber

371‧‧‧Light Inductance Detector

372‧‧‧Photoelectric signal amplifier

373‧‧‧passband filter amplifier

374‧‧‧Signal Comparator

375‧‧‧Inductance adjustment circuit

376‧‧‧Signal Trigger Processing Circuit

377‧‧‧Open collector circuit

378‧‧‧Illumination detection circuit

38‧‧‧second mask

Claims (10)

A blanking detection method includes: providing a blanking passage, forming a detecting area therein; providing a detecting path in which an LED light source is provided with a light source to emit a signal, and the light of the LED light source is transmitted through the optical fiber The energy guide is transmitted to the photo-sensing device for signal reception; the blanking channel and the detection path meet in the detection interval, so that the detected component is detected when it falls through the detection interval in the blanking channel. The blanking detection method according to claim 1, wherein the LED light source is driven by a constant current circuit, and after receiving the optical inductance detector, the signal is amplified by a photoelectric signal amplifier, and is performed by a passband filter amplifier. The signal is filtered, and then the sensitivity adjustment circuit compares the magnitude of the signal, and the signal is converted into 0 and 1 for digital control. For example, in the blanking detection method described in claim 2, the signal trigger processing circuit adjusts the length of the output pulse wave, and the open collector circuit output triggers the external main controller. The blanking detection method according to claim 2, wherein the illuminance detecting circuit compares the illuminance sensing energy received by the photo-sensing device between the photoelectric signal amplifier and the pass-band filtering signal amplifier to monitor the brightness of the LED light source. Variety. The blanking detection method according to claim 1, wherein the detection zone is disposed in a detection seat fixed on a transferable displacement carrier, and the detected component is in the blanking passage. The transfer seat is displaced. The blanking detection method according to item 5 of the patent application scope, wherein the blanking passage One end of the detecting section communicates with a sorting tube, and the other end communicates with one of the discharge passages of the detecting seat, and the three sides are formed together, and the detected component is pushed by the gas to be discharged through the discharge passage of the detecting seat through the blanking passage. The blanking detection method according to claim 5, wherein the detection path is a detection section on the detection seat, a first volume on the detection section side, and a other side of the detection section. The second chamber is formed by three. The blanking detection method according to the first aspect of the invention, wherein the LED light source is projected to the detection section via a first mask; the optical fiber receives the light energy of the LED light source through the second mask from the detection section. The blanking detection method according to the first aspect of the invention, wherein the first mask and the second mask are made of a transparent material. A blanking detecting device comprising: a device for performing a blanking detection method according to claims 1 to 9 of the patent application.