JP2012190432A - Component quantity measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a component quantity measuring device which easily performs management on a component loss by automatically, speedily, and accurately measuring the quantity of a plurality of components loaded on a tray and improving efficiency of a component quantity measuring process, and improves productivity by preventing or minimizing loss cost due to the component loss.SOLUTION: The component quantity measuring device includes a scanning unit 100 which scans a tray 20 loaded with a plurality of components 10 by a laser to generate a beam for signal for measuring the quantity of the plurality of components 10; and a detection unit 200 which receives the beam for signal and detects the quantity of the plurality of components 10.

Description

  The present invention relates to a parts quantity measuring apparatus, and more particularly, by automatically measuring the number of parts loaded in a tray to improve the efficiency of the part quantity measuring process, thereby reducing manufacturing costs and productivity. The present invention relates to a component quantity measuring apparatus that is intended to be improved.

  In general, a part quantity measurement process is required for measuring the quantity of parts in order to manage the flow loss between processes for small parts such as MLCCs and semiconductor chips.

  Usually, the measurement of the quantity of small parts uses a quantity measurement method based on the sampling weight method and a quantity measurement method based on the simple weight method.

  In the sampling weight method, in order to measure the quantity of the whole part, the weight of the part is measured by sampling, and then the weight of the whole part is converted into the weight of the sampled part. Measure quantity.

  However, when measuring the total number of parts by the sampling weight method, in the case of a part of about 400 μm or less, not only sampling measurement is difficult, but the weight of the sampled part becomes smaller as the part weight is smaller and lighter. When the weight of the entire part is converted, the error rate increases. For this reason, there is a problem in that it is difficult to manage the quantity of all parts due to the loss of parts corresponding to the error rate.

  As described above, since it is difficult to accurately measure the quantity of all parts by sampling light and small parts, the simple weight method converts the weight of the whole part by converting the weight of the whole part with the standard weight of the one part. The quantity of parts is being measured.

Korean Published Patent No. 10-2005-0094976

  However, while parts such as semiconductor chips are becoming more and more precise and miniaturized, it becomes difficult to accurately measure the quantity of whole parts even with the simple weight method, and this makes it possible to accurately measure the quantity of whole parts one by one. Development of measuring devices is required.

  As mentioned above, if the total quantity of parts between processes cannot be accurately grasped and the error rate is large in the quantity measurement, loss costs due to parts loss will occur and productivity will be reduced. There was a problem.

  The present invention has been made in view of the above problems, and its purpose is to automatically and quickly and accurately measure the quantity of a plurality of parts loaded on a tray, thereby improving the efficiency of the part quantity measurement process. It is an object of the present invention to provide a part quantity measuring apparatus that facilitates part loss management and improves the productivity by preventing or minimizing loss costs due to part loss.

  In order to solve the above-described object, according to the present invention, a scanning unit for generating a signal beam for laser scanning of a tray on which a plurality of parts are stacked and measuring the number of the plurality of parts is provided. , And a detection unit for detecting the quantity of the plurality of parts, to which the signal beam is input.

  The plurality of parts are stacked along the plane XY axis direction of the tray, and the scanning unit performs line scanning along one of the plane XY axis directions of the tray. The line scanning is moved along another axis in the plane XY axis direction of the tray.

  The scanning unit includes a laser beam irradiator that emits a laser beam for the laser scanning, a laser beam input to the laser beam, the laser beam being emitted to the tray, and laser scanning the tray. And a scanner that receives a reflected beam reflected from the plurality of components and emits the reflected beam to the detection unit.

  The detection unit includes a detector that receives a reflected beam emitted from the scanner and detects a reflected beam signal corresponding to the reflected beam to measure the number of the plurality of components. The

  The component quantity measuring device is configured to guide the laser beam emitted from the laser beam irradiator to the scanner and to guide the reflected beam emitted from the scanner to the detector. And a beam splitter provided between the scanner and the scanner. The detector is provided on one side of the beam splitter and receives a reflected beam reflected by the beam splitter.

  The component quantity measuring device further includes a lens that is provided on the emission side of the scanner and that allows the laser beam emitted from the scanner to be emitted to the tray uniformly.

  In order to solve the above object, according to another preferred embodiment of the present invention, a laser beam is scanned on a tray on which a plurality of parts are stacked, and a signal beam for measuring the quantity of the plurality of parts is provided. There is provided a method for measuring a quantity of parts, including a step of generating and detecting a quantity of the plurality of parts by inputting the signal beam.

  According to the embodiment of the present invention, the following effects can be obtained.

  First, according to the present invention, the quantity of a plurality of parts loaded on a tray can be automatically and quickly measured with a laser scanning method, and the efficiency of the part quantity measurement process can be improved. There is.

  Secondly, according to the present invention, by improving the speed, accuracy and convenience of measuring the quantity of parts, it is possible to prevent parts from being lost and to suppress an increase in manufacturing costs due to parts being lost, There is an advantage that productivity can be improved.

1 is a schematic perspective view of a parts quantity measuring device according to an embodiment of the present invention. 1 is a schematic configuration diagram of a component quantity measuring device according to an embodiment of the present invention. FIG. 2 is a plan view schematically showing a state in which a plurality of components are stacked on the tray in FIG. 1. It is a graph which shows the reflected beam signal detected by the detector in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Each embodiment shown below is given as an example so that those skilled in the art can sufficiently communicate the idea of the present invention. Therefore, the present invention is not limited to the embodiments described below, but can be embodied in other forms. In the drawings, the size and thickness of the device can be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

  The terminology used herein is for the purpose of describing embodiments and is not intended to limit the invention. In this specification, the singular includes the plural unless specifically stated otherwise. As used herein, “includes” a stated component, step, action, and / or element does not exclude the presence or addition of one or more other components, steps, actions, and / or elements. Want to be understood.

  FIG. 1 is a schematic perspective view of a part quantity measuring apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a part quantity measuring apparatus according to an embodiment of the present invention. FIG. 4 is a plan view schematically showing a state in which a plurality of parts are loaded on the tray in FIG. 1, and FIG. 4 is a graph showing reflected beam signals detected by the detector in FIG.

  Referring to FIGS. 1 and 2, the component quantity measuring apparatus according to an embodiment of the present invention is roughly configured to include a scanning unit 100 and a detection unit 200.

  The scanning unit 100 laser-scans the tray 20 on which the plurality of components 10 are stacked, and generates a signal beam for measuring the number of the plurality of components 10 stacked on the tray 20.

  The detection unit 200 receives the signal beam generated by the scanning unit 100 and detects the quantity of the plurality of components 10 loaded on the tray 20.

  That is, the component quantity measuring apparatus according to the present embodiment generates a reflected beam by irradiating each component 10 loaded on the tray 20 with a laser when the tray 20 is laser-scanned by the scanning unit 100 and reflecting the laser beam. The detection unit 200 detects a reflected beam reflected from each component 10 and measures the quantity of the plurality of components 10 loaded on the tray 20.

  More specifically, the part quantity measuring apparatus according to the present embodiment is a process in which the transfer unit 30, that is, a tray 20 on which a plurality of parts 10 are loaded by a belt-type or chain-type conveyor is transferred between parts manufacturing processes. The quantity of the plurality of parts 10 loaded on the tray 20 is measured.

  As shown in FIG. 3, the plurality of components 10 can be arbitrarily stacked along the plane XY axis direction of the tray 20. Here, any one of the plane X-Y axis directions of the tray 20 forms the same axial direction as the transfer direction of the tray 20 by the transfer unit 30. In the present embodiment, it is indicated that the Y-axis direction is the same axial direction as the transfer direction of the tray 20.

  Accordingly, the scanning unit 100 performs line scanning along the plane X-axis direction of the tray 20 that is orthogonal to the transfer direction of the tray 20 in the plane XY axis direction of the tray 20, and the plane X-axis direction of the tray 20. The tray 20 loaded with a plurality of components 10 is laser-scanned while moving the line scanning along the direction of the plane Y of the tray 20 along the Y-axis direction.

  The detection unit 200 receives a signal beam reflected from each component 10 loaded on the tray 20 during the laser scanning by the scanning unit 100, that is, a reflected beam, and the quantity of the plurality of components 10 loaded on the tray 20. Detect and measure.

  Therefore, the scanning unit 100 includes a laser beam irradiator 110 that emits a laser beam for laser scanning, and a scanner 120 that receives the laser beam and emits it to the tray 20 to laser scan the tray 20. Composed.

  In the laser scanning, the laser beam is incident on the plurality of components 10 loaded on the tray 20, and then a reflected beam reflected from each component is input again and emitted to the detection unit 200.

  The detection unit 200 receives a reflected beam emitted from the scanner 120 and reflected from each component loaded on the tray 20, and detects a reflected beam signal corresponding to the reflected beam. This includes a detector for measuring the quantity of the parts 10.

  The component quantity measuring apparatus according to the present embodiment guides the laser beam emitted from the laser beam irradiator to the scanner 120 and guides the reflected beam emitted from the scanner 120 to the detection unit 200, that is, the detector. In addition, a beam splitter 310 provided between the laser beam irradiator 110 and the scanner 120 is included. The detection unit 200, that is, the detector, is provided on one side of the beam splitter 310, receives the reflected beam reflected by the beam splitter 310, detects a reflected beam signal corresponding to the reflected beam, and detects the tray 20. The quantity of a plurality of parts 10 loaded on the is measured.

  The component quantity measuring apparatus according to the present embodiment is provided on the emission side of the scanner 120 so that the laser beam emitted from the scanner 120 is emitted in a direction perpendicular to the plane XY direction of the tray 20. The lens 320 is further included.

  The process of measuring the quantity of the plurality of components 10 loaded on the tray 20 by the scanning unit 100 and the detection unit 200 configured as described above is as follows.

  First, when a laser beam is emitted from the laser beam irradiator 110, the emitted laser beam is semi-transmitted through the beam splitter 310, and the laser beam semi-transmitted through the beam splitter 310 is incident on the scanner 120. . The scanner 120 emits the incident laser beam to the tray 20 and laser scans the tray 20 along the plane XY axis direction.

  The laser beam emitted through the scanner 120 is emitted uniformly through the lens 320 in a direction orthogonal to the plane XY axis direction of the tray 20, and the efficiency of laser beam irradiation from the scanner 120 to the tray 20 can be improved.

  Further, during laser scanning of the tray 20 by the scanner 120, a laser beam is reflected on the upper surface of each component 10 while a laser beam is irradiated on each component 10 loaded on the tray 20, and the reflected beam is generated. The light enters the scanner 120 through the lens 320, and the scanner 120 emits the incident reflected beam to the beam splitter 310.

  Then, the reflected beam emitted from the scanner 120 to the beam splitter 310 is reflected by the beam splitter 310 and enters the detection unit 200, that is, the detector. Here, the beam splitter 310 may have a characteristic of transmitting approximately 50% of the laser beam and reflecting the remaining 50%. As a result, the reflected beam is transmitted approximately 50% through the beam splitter 310 and the remaining 50% is reflected to the detector.

  Thus, when the reflected beam is incident on the detection unit 200, that is, the detector, the detector detects a reflected beam signal corresponding to the incident reflected beam. According to one embodiment, the detection unit 200 may amplify and detect the reflected beam signal in order to increase the detection efficiency of the reflected beam signal.

  That is, at the time of laser scanning of the tray 20, the detection unit 200, that is, the detector amplifies the signal strength of the reflected beam signal, and detects the signal strength of the reflected beam signal with respect to time as shown in FIG. By detecting the peak of the detected reflected beam signal, the number of parts loaded on the tray 20 is measured.

  In other words, during laser scanning of the tray 20, when each component 10 loaded on the tray 20 is irradiated with a laser beam and reflected from the laser beam, the detection unit 200, that is, the detector, includes a plurality of components 10 loaded on the tray 20. A peak of the reflected beam signal is generated for the quantity. That is, the peak of the reflected beam signal corresponds to a signal corresponding to one component. Thereby, the detection unit 200 can accurately detect and measure the quantity of the parts 10 loaded on the tray 20.

  Therefore, according to the component quantity measuring apparatus according to the present embodiment, the quantity of the plurality of components 10 loaded on the tray 20 can be automatically and quickly measured by the laser scanning method, which occurs during the manufacturing process of the components. In addition to preventing the parts from being lost, it is possible to suppress an increase in manufacturing cost due to the parts being lost in advance, thereby improving the yield of the parts.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

10 parts 20 tray 30 transfer unit 100 scanning unit 110 laser beam irradiator 120 scanner 200 detection unit 310 beam splitter 320 lens

Claims (6)

A scanning unit that laser-scans a tray on which a plurality of parts are loaded and generates a signal beam for measuring the quantity of the plurality of parts;
A detection unit that receives the signal beam and detects the quantity of the plurality of parts;
Including parts quantity measuring device. The plurality of parts are stacked along a plane XY axis direction of the tray,
The scanning unit performs line scanning along any one of the planes in the plane X-Y axis direction of the tray, and performs the line scanning on the other one of the planes in the plane X-Y axis direction of the tray. The part quantity measuring apparatus according to claim 1, wherein the part quantity measuring apparatus is moved along an axis. The scanning unit includes a laser beam irradiator that emits a laser beam for the laser scanning;
A scanner that receives the laser beam and emits the laser beam to the tray, laser scans the tray, and receives a reflected beam reflected from the plurality of components and emits the laser beam to the detection unit during the laser scanning; Comprising and including
The detection unit includes a detector that receives a reflected beam emitted from the scanner and measures a quantity of the plurality of parts by detecting a reflected beam signal corresponding to the reflected beam. The part quantity measuring apparatus according to 1. In order to guide the laser beam emitted from the laser beam irradiator to the scanner and guide the reflected beam emitted from the scanner to the detector, between the laser beam irradiator and the scanner, A beam splitter is further provided,
The apparatus according to claim 3, wherein the detector is provided on one side of the beam splitter, and a reflected beam reflected by the beam splitter is input.   5. The component quantity measuring device according to claim 3, further comprising a lens provided on an emission side of the scanner and configured to emit a laser beam emitted from the scanner to the tray uniformly. 6. Laser scanning a tray loaded with a plurality of parts and generating a signal beam for measuring the quantity of the parts;
Receiving the signal beam and detecting a quantity of the plurality of parts;
Method for measuring the quantity of parts including

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