TW202012285A - Electronic component stabilizing device and appearance inspection apparatus therefor - Google Patents

Abstract

An electronic component stabilizing device is applied to an appearance inspection apparatus whose rotating disc carries electronic components dropped from a feeding track and makes the electronic components move along a material traveling line. The electronic component stabilizing device includes a guiding wheel disposed on an outer side of the material traveling line and has a curved surface, a motor connected with the guiding wheel to drive rotation of the guiding wheel, and a negative pressure generator disposed at a bottom of the guiding wheel and generating suction force, so that the electronic components dropped from the feeding track are sucked to attach to the curved surface of the guiding wheel and move forward along with the rotation of the guiding wheel. The linear velocity of the guide wheel is the same as the traveling linear velocity of the electronic components on the rotating disk. When the electronic component is no longer sucked by the suction force of the negative pressure generator and is separated from the guiding wheel, the electronic component can stably move along the material traveling line on the rotating disk.

Description

Electronic component stabilization device and applicable appearance inspection equipment

This case is about an electronic component stabilization device, especially an electronic component stabilization device suitable for appearance inspection equipment.

Existing electronic component appearance inspection equipment generally arranges the electronic components by vibrating discs and arranges them on a rotating disc. The rotating discs transport the electronic components to the front of the lens to take an image for inspection of appearance. The test results are collected separately.

Figure 1 shows a schematic diagram of the conveying mechanism of the current appearance inspection equipment, and Figure 2 shows a partial cross-sectional view of the blanking place in Figure 1. As shown in FIG. 1 and FIG. 2, the current appearance inspection equipment includes a feeding device 11, a blanking rail 12, a low-vibration block 13, a glass disc 14 and a material guide block 15. The feeding device 11 sends out the electronic component 10 through the blanking rail 12, and the bottom of the blanking rail 12 is provided with a low-vibration block 13, which is locked under the blanking rail 12 by a fixing screw 131, to provide for receiving the electronic component 10 from the blanking The track 12 falls on the bridge of the glass disc 14. After the electronic component 10 vibrates forward from the blanking track 12 and falls to the low-vibration block 13, the electronic component 10 on the low-vibration block 13 is pushed forward and dropped onto the rotating glass disc 14 through the rear, and the glass disc 14 accepts the drop Electronic components 10, and the linear speed of the glass disc 14 is faster than the feeding speed of the blanking track 12, so that the electronic components 10 can be separated from each other after falling on the glass disc 14, so that the rear lens can take pictures After visual inspection, the electronic component 10 is finally collected into the aggregate device 16.

Since the rotating speed of the glass disc 14 is faster than the feeding speed of the blanking track 12, the electronic component 10 falling on the glass disc 14 is prone to the problem of deflection and instability of the blank, so a material guide block is provided above the glass disc 14 15. It is fixed near the blanking place and has an arc surface. By the rotation of the glass disk 14, the edge of the electronic component 10 touches the arc surface of the material guide block 14, so that the electronic component 10 is guided to all lines Direction.

This conventional technology can overcome the problem of material skew and instability for the appearance inspection equipment of the glass disc 14 at a low speed (below 5 rpm) capacity, but when the speed of the glass disc 14 is more than twice the current capacity speed, the material The problem of skew instability cannot be overcome, and the proportion of skew will increase as the speed increases.

In addition, in the conventional technology, in order to attract the electronic component 10 to the glass disc 14 for transportation, the glass disc 14 is charged, so that the electronic component 10 is attracted to the glass disc 14 by the electrostatic adsorption force. However, whether the static electricity is provided by means such as electrostatic brushes, ionizers or conductive plates, the cost of the equipment is increased, and the operator may be charged by the static electricity and have safety problems. In addition, the static electricity supply device is also prone to stick to dust, thereby increasing the difficulty of cleaning.

Therefore, in order to improve the lack of conventional technology, it is necessary to provide an electronic component stabilization device to overcome the problem of unstable blanking and skew, thereby improving the productivity of appearance inspection equipment.

The purpose of this case is to provide an electronic component stabilization device and its applicable appearance inspection equipment, which is based on improving the blanking stability, overcoming the problem of the instability of the blanking skew of the conventional technology, and thereby increasing the productivity of the appearance inspection equipment.

Another object of this case is to provide an electronic component stabilization device and its applicable appearance inspection equipment, which can eliminate the configuration of the static electricity supply device by improving the blanking stability, so it can reduce equipment costs, increase the safety of operators, And avoid the problem of cleaning the static electricity supply device.

To achieve the above purpose, this case provides an electronic component stabilizing device, which is suitable for an appearance inspection device. The appearance inspection equipment includes a material discharging track and a rotating disc, which carries a plurality of electronic components falling from the material discharging track and moves the plurality of electronic components along a material walking line. The electronic component stabilization device includes: a material guide wheel, which is arranged outside the material walking line, and has a circular arc surface; a motor is connected to the material guide wheel to drive the rotation of the material guide wheel; and a negative pressure generator, It is arranged at the bottom of the guide wheel and is constructed to generate a suction force, so that each electronic component falling from the feeding track is sucked to the guide wheel and attached to the arc surface of the guide wheel, and follows the guide wheel Rotate and push forward. Among them, the linear speed of the guide wheel is the same as the linear speed of the electronic component on the rotating disc. When the electronic component is no longer attracted by the suction of the negative pressure generator and is separated from the guide wheel, the electronic component can be stably on the rotating disc Follow the material walking line.

In one embodiment, the electronic component stabilizing device is disposed at the end exit of the blanking track.

In one embodiment, the arc surface of the material guide wheel is tangent to the material travel line.

In one embodiment, the direction of rotation of the guide wheel is opposite to the direction of rotation of the rotating disc.

In one embodiment, the gap between the bottom of the guide wheel and the surface of the rotating disk is 1/3 to 2/3 of the thickness of the electronic component.

In one embodiment, the negative pressure generator includes a pipe, and the pipe arrangement direction is substantially perpendicular to the tangent direction of the material travel line.

In one embodiment, the tube has an opening near the end where the electronic component drops.

In one embodiment, the distance between the arc surface of the guide wheel corresponding to the opening of the pipe and the outlet of the end of the blanking track is approximately equal to the length of the electronic component.

In one embodiment, when the electronic component is separated from the material guide wheel, the angle between the longitudinal direction of the electronic component and the material travel line is about 0 to 15 degrees.

In one embodiment, the negative pressure generator is a vacuum tube device.

To achieve the above purpose, the present case provides an appearance inspection device, which includes a feeding device, a rotating disk, an electronic component stabilizing device, a plurality of image capturing devices, and a collecting device. The feeding device has a feeding track, which is based on pushing a plurality of electronic components. The rotating disc structure carries a plurality of electronic components falling from the blanking track, and moves the plurality of electronic components along a material walking line. The electronic component stabilization device includes: a material guide wheel, which is arranged outside the material walking line, and has a circular arc surface; a motor is connected to the material guide wheel to drive the rotation of the material guide wheel; and a negative pressure generator, It is installed at the bottom of the guide wheel and is constructed to generate a suction force, so that each electronic component falling from the blanking track is attracted to the guide wheel, and is attached to the arc surface of the guide wheel and follows the guide The wheel rotates and pushes forward; where the linear speed of the guide wheel is the same as the linear speed of the electronic component walking on the rotating disc. When the electronic component is no longer attracted by the suction of the negative pressure generator and leaves the guide wheel, the electronic The element can be stably advanced along the material walking line on the rotating disc. A plurality of image capturing devices are based on capturing images from various viewing angles of electronic components for visual inspection. The aggregate device is configured to collect electronic components based on the appearance inspection results.

In one embodiment, the appearance inspection device further includes a material guiding device, which is disposed downstream of the electronic component stabilizing device.

In one embodiment, the material guiding device includes a material guiding block, which is disposed inside the material walking line and has a circular arc surface.

Some embodiments embodying the features and advantages of this case will be described in detail in the following paragraphs. It should be understood that this case can have various changes in different forms, and all of them do not deviate from the scope of this case, and the descriptions and drawings therein are essentially for illustrative purposes, rather than to limit this case.

This case mainly provides an electronic component stabilization device, which is suitable for appearance inspection equipment and is structured to improve the blanking stability, thereby enhancing the productivity of appearance inspection equipment. Figures 3 and 4 show different perspective views of the appearance inspection device of this case. As shown in FIGS. 3 and 4, the appearance inspection device 2 includes a conveying device 3, a feeding device 4, an electronic component stabilization device 5, an imaging device 6 and a collecting device 7, all of which are installed in the appearance inspection device 2 on the base 21.

The conveying device 3 includes a rotating disk 31 and a motor 32. In one embodiment, the rotating disk 31 is a circular transparent disk made of glass. The rotating disk 31 is arranged horizontally and is power-connected to the motor 32, whereby it can be driven by the motor 32 to rotate horizontally, and serves as a carrier for the electronic component 10. The platform moves the electronic component 10 to each station of the imaging device 6 for inspection of appearance through rotation, and moves to the collecting device 7 for final collecting operation. Among them, the path of the electronic component 10 moving with the rotating disk 31 is defined as a material travel line (as shown by the dotted line on the rotating disk 31 in FIG. 6 ), which is a circular path with a radius slightly smaller than the radius of the rotating disk 31.

The feeding device 4 includes a vibration plate 41 and a blanking rail 42. In one embodiment, the vibrating plate 41 is a circular plate, which is based on transferring the electronic component 10 from the center of the plate according to the disc spiral path by circular vibration, and sequentially arranged to the outermost path to enter the blanking track 42. The blanking track 42 is connected to the vibrating plate 41, which is a linear concave groove, which can carry the electronic component 10 and form the linear arrangement of the electronic component 10, and push the electronic component 10 straight forward to fall onto the rotating plate 31. The end of the blanking rail 42 extends to be close to but not in contact with the surface of the rotating disk 31, and the blanking rail 42 is preferably arranged along a tangent direction of the rotating direction of the rotating disk 31.

The appearance detection device 2 includes a plurality of imaging devices 6 arranged around the rotating disk 31, and each imaging device 6 is arranged adjacent to the rotating disk 31 at different angles according to different imaging angles. Each imaging device 6 includes a photographing lens 61 and an upright slide rail 62. The photographing lens 61 is slidably disposed on the upright slide rail 62, and is configured to capture images from various viewing angles of the electronic component 10 for appearance inspection. The imaging device 6 may further include a reflecting mirror as required, which corresponds to the rotating disk 31 and is configured to reflect the electronic component 10 carried on the rotating disk 31 for the photographing lens 61 to capture the image of the electronic component 10; With this arrangement, the number of imaging devices 6 arranged on the rotating disk 31 can be reduced.

The collecting device 7 includes a plurality of collecting boxes 71 and a plurality of blowing nozzles 72 corresponding to the plurality of collecting boxes 71, and each blowing nozzle 72 is arranged toward the corresponding collecting box 71, and is respectively connected to a stable positive pressure with adjustable pressure Gas source. Each nozzle 72 is provided with a solenoid valve, and each solenoid valve is electrically connected to the controller, so the controller can control the time point when each nozzle 72 blows through the solenoid valve, thereby according to the detection result of each electronic component 10 Each electronic component 10 is blown into the corresponding collection box 71. In one embodiment, the collecting device 7 includes four collecting boxes 71, of which two collecting boxes 71 collect electronic components 10 detected as defective, and can be set to collect electronic components 10 with different degrees of defectiveness (for example: One collecting box 71 is responsible for collecting electronic components 10 with damaged appearance, and the other collecting box 71 is responsible for collecting electronic components 10 with uneven plating. The electronic components 10 with such uneven plating can be re-plated and then re-processed (Used after testing), one collection box 71 collects the electronic components 10 that are detected as qualified, and the other collection box 71 collects electronic components 10 that need to be retested, such as electronic components 10 that have not been successfully imaged. Of course, the number and use configuration of the collecting box 71 can be adjusted according to different requirements without being limited to the foregoing embodiments.

In order to effectively obtain images from various viewing angles of the electronic component 10, the electronic component 10 must maintain a certain distance on the rotating disk 31 to facilitate the imaging lens 61 of the imaging device 6 to take an image, so the rotation speed of the rotating disk 31 must be greater than that of the electronic component 10. The blanking speed is to pull apart the electronic components 10 from each other. Therefore, when the electronic component 10 falls on the rotating disk 31 with a faster rotation speed, it is inevitable that a skew phenomenon occurs and affects the quality of the rear-end imaging. Therefore, in order to improve this deficiency, the appearance inspection device 2 of the present case further includes an electronic component stabilization device 5, which is designed to increase the stability of the blanks for effective appearance inspection.

Figure 5 to Figure 8 show the partial structure of the appearance inspection equipment and the schematic diagram of the electronic components carried to clearly explain the design of the electronic component stabilization device in this case. Please also refer to Figure 3 to Figure 8. The electronic component stabilizing device 5 is disposed at the end exit of the blanking rail 42 (that is, the blanking place), and is disposed outside the material travel line of the rotating disk 31 (as indicated by the circular broken line on the rotating disk 31). The electronic component stabilizing device 5 includes a guide wheel 51, a motor 52, and a negative pressure generator 53. The guide wheel 51 has a substantially disc shape, is arranged horizontally like the rotating disk 31, and is power-connected to the motor 52, whereby the motor 52 can be driven to rotate horizontally. The guide wheel 51 is disposed outside the material running line, and has a smooth arc surface 511. In one embodiment, the arc surface 511 is tangent to the material walking line. When the electronic component 10 touches the arc surface 511 of the guide wheel 51, it can be guided to be arranged on the material walking line in sequence as the guide wheel 51 rotates.

In one embodiment, the tangent speed of the arc surface 511 of the guide wheel 51 is the same as the tangential speed of the contact surface of the position where the rotating disk 31 carries the electronic component 10, in other words, the linear speed V2 of the guide wheel 51 and the electronic component 10 are rotating The traveling linear velocity V1 on the disc 31 is the same, so the distance between the front and back materials can be stabilized. In addition, the rotation direction of the guide wheel 51 is opposite to the rotation direction of the rotary disk 31, for example, the rotary disk 31 rotates in a counterclockwise direction and the guide wheel 51 rotates in a clockwise direction to take the electronic component 10 away from the drop The imaging device 6 moves. Or, when the arrangement direction of the blanking track 42 is changed, the rotating disk 31 can also be rotated counterclockwise and the guide wheel 51 can be rotated clockwise.

In one embodiment, the gap H between the bottom of the guide wheel 51 and the surface of the rotating disk 31 is about 1/3 to 2/3 of the thickness of the electronic component 10, so that the electronic component 10 can abut the circle of the guide wheel 51 The curved surface 511 does not fall into the bottom of the guide wheel 51.

The negative pressure generator 53 is disposed at the bottom of the guide wheel 51, but does not rotate with the guide wheel 51. In an embodiment, the negative pressure generator 53 is disposed on a side close to the outlet of the end of the blanking rail 42. The negative pressure generator 53 includes a pipe 531. The arrangement direction of the pipe 531 is substantially perpendicular to the tangent direction of the material travel line, and the pipe 531 has an opening 532 at an end close to the blanking place. When the negative pressure generator 53 forms a negative pressure on the pipe 531 by, for example, a suction method, a suction force is generated through the opening 532, so that the electronic component 10 falling from the blanking rail 42 is sucked to the guide wheel 51 and attached to The arc surface 511 of the guide wheel 51 and the surface of the rotating disk 31 are pushed forward as the guide wheel 51 rotates. Since the tangent speed of the arc surface 511 of the guide wheel 51 is the same as the tangential speed of the contact surface of the rotating disk 31 carrying the electronic component 10, when the electronic component 10 is no longer attracted by the suction force of the negative pressure generator 53 to leave the guide wheel 51 The advancement speed of the electronic component 10 is the same as the tangential speed of the contact surface of the rotary disk 31 carrying the electronic component 10 position, which can stably advance along the material travel line on the rotary disk 31, so the blanking stability can be further improved.

In one embodiment, when the electronic component 10 is separated from the material guide wheel 51, the angle q between the longitudinal direction of the electronic component 10 and the material travel line is maintained at an angle range of about 0 to 15 degrees.

In an embodiment, the negative pressure generator 53 may be a vacuum tube device, but not limited thereto.

In one embodiment, the arc surface 511 of the guide wheel 51 corresponds to the distance W between the opening 532 of the pipe 531 of the negative pressure generator 53 and the outlet of the end of the blanking track 42 is approximately the material distance of one material, That is, it is roughly equivalent to the length of the electronic component 10, and this distance W can also be adjusted according to the length of different electronic components 10.

In one embodiment, since the electronic component stabilizing device 5 improves the blanking stability, the end of the blanking rail 42 does not need to be equipped with a low-vibration block.

In an embodiment, the appearance inspection device 2 may optionally include a material guiding device 8 disposed downstream of the electronic component stabilizing device 5. The material guiding device 8 includes a material guiding block 81, which is arranged above the rotating disc 31 and located inside the material walking line. The material guide block 81 has a smooth arc surface 811 on the side facing the material walking line. When the edge of the electronic component 10 touches the arc surface 811 of the material guide block 81, the electronic component 10 can be further guided to all lines Direction. In addition, since the electronic component stabilizing device 5 has generally avoided the problem of blanking and skew, when the electronic component 10 is separated from the material guide wheel 51, most of them are already arranged on the material walking line, so in one embodiment, the appearance The detection device 2 may not need to be provided with a material guide device 8.

In summary, by the design of the electronic component stabilizing device 5 of this case, when the electronic component 10 falls from the exit of the feeder rail 42 of the feeding device 4 onto the surface of the rotating disk 31, the electronic component 10 will be firstly subjected to the negative pressure generator The suction force of 53 is attracted to the guide wheel 51, and is attached to the guide wheel 51 and pushed forward as the guide wheel 51 rotates. Since the linear velocity of the guide wheel 51 is the same as the linear velocity of the electronic component 10 running on the rotating disk 31, when the electronic component 10 is no longer attracted by the suction of the negative pressure generator 53 to leave the guide wheel 51, the electronic component 10 is It can stably and positively move along the material walking line on the rotating disk 31. Therefore, the electronic component stabilization device 5 in this case can further improve the blanking stability and overcome the problem of the unstable blanking skew of the conventional technology, so that the back-end imaging device 6 can effectively capture images and improve the detection performance of the appearance inspection device 2. On the other hand, since the blanking stability is greatly improved, the rotation speed of the rotating disk 31 can also be increased to about 5 rpm to 12 rpm (preferably 10 rpm to 12 rpm), thereby improving the productivity of the appearance inspection device 2, such as one minute The production capacity of 8000 or even more than 10,000 materials has greatly improved the industrial application value of appearance inspection equipment 2. In addition, through the design of the electronic component stabilizing device 5, the appearance inspection device 2 of this case does not need to use an electrostatic supply device to make the electronic component 10 be attracted to the rotating disk 31 through electrostatic adsorption force, so compared to the conventional appearance with an electrostatic supply device Inspection equipment, the appearance inspection equipment 2 in this case can reduce equipment cost, increase the safety of the operator, and avoid the problem of cleaning the static electricity supply device.

Even though the present invention has been described in detail by the above-mentioned embodiments and can be modified by any person skilled in the art, it can be modified in any way as long as it is attached to the scope of protection of the patent application.

10: Electronic components 11: Feeding device 12: Feeding rail 13: Low vibration block 131: Fixing screw 14: Glass disc 15: Guide block 16: Aggregate device 2: Appearance inspection device 21: Base 3: Conveying Device 31: rotating disk 32: motor 4: feeding device 41: vibrating disk 42: blanking track 5: electronic component stabilizing device 51: guide wheel 511: arc surface 52: motor 53: negative pressure generator 531: pipeline 532: opening 6: imaging device 61: photographic lens 62: upright slide 7: collecting device 71: collecting box 72: mouthpiece 8: guide device 81: guide block 811: arc surface V1: electronic component Traveling linear velocity on the rotating disc V2: rotating linear velocity of the guide wheel H: gap between the bottom of the guiding wheel and the surface of the rotating disc q: angle between the electronic component and the material walking line W: the pipe opening of the negative pressure generator and The distance between the exits of the end of the blanking track

Figure 1 shows a schematic diagram of the delivery mechanism of current appearance inspection equipment. Figure 2 shows a partial cross-sectional view of the blanking point in Figure 1. Figures 3 and 4 show different perspective views of the appearance inspection device of this case. Figure 5 to Figure 8 show the partial structure of the appearance inspection equipment and the schematic diagram of the electronic components carried.

10: Electronic components

31: Rotating disk

42: blanking track

51: Guide wheel

511: Arc surface

52: Motor

53: Negative pressure generator

531: Pipeline

532: opening

81: Guide block

811: Arc surface

V1: Linear speed of electronic components on the rotating disk

V2: rotating linear speed of the guide wheel

θ: the angle between the longitudinal direction of the electronic component and the material walking line

W: The distance between the pipe opening of the negative pressure generator and the outlet of the end of the blanking track

Claims (13)

An electronic component stabilizing device is suitable for an appearance inspection device. The appearance inspection device includes a blanking track and a rotating disc. The rotary disc carries a plurality of electronic components dropped from the blanking rail and makes the plurality of electronic components follow A material walking line moves, the electronic component stabilizing device includes: a material guide wheel, which is arranged outside the material walking line, and has an arc surface; a motor is connected to the material guide wheel to drive the material guide wheel Rotation; and a negative pressure generator, which is arranged at the bottom of the guide wheel and is constructed to generate a suction force, so that each electronic component falling from the blanking track is sucked to the guide wheel and attached to the guide wheel The arc surface of the material guide wheel is pushed forward with the rotation of the material guide wheel; wherein, the linear speed of the material guide wheel is the same as the linear velocity of the electronic component running on the rotating disc, when the When the electronic component is no longer attracted by the suction force of the negative pressure generator and disengages from the material guide wheel, the electronic component can stably advance along the material walking line on the rotating disc. The electronic component stabilization device according to claim 1, which is provided at the end exit of the blanking track. The electronic component stabilization device according to claim 1, wherein the arc surface of the material guide wheel is tangent to the material travel line. The electronic component stabilization device according to claim 1, wherein the rotation direction of the material guide wheel is opposite to the rotation direction of the rotary disk. The electronic component stabilization device according to claim 1, wherein the gap between the bottom of the material guide wheel and the surface of the rotating disk is 1/3 to 2/3 of the thickness of the electronic component. The electronic component stabilization device according to claim 1, wherein the negative pressure generator includes a pipe, and the arrangement direction of the pipe is substantially perpendicular to the tangent direction of the material travel line. The electronic component stabilization device as claimed in claim 6, wherein the pipe has an opening at an end close to where the electronic component drops. The electronic component stabilization device according to claim 7, wherein the distance between the opening of the arc guide wheel of the feed wheel and the exit of the end of the blanking track is approximately equal to the length of the electronic component. The electronic component stabilization device according to claim 1, wherein when the electronic component is separated from the material guide wheel, the angle between the longitudinal direction of the electronic component and the material travel line is about 0 to 15 degrees. The electronic component stabilization device according to claim 1, wherein the negative pressure generator is a vacuum tube device. An appearance inspection device, including: a feeding device with a feeding track, which is configured to push a plurality of electronic components; a rotating disk, which is configured to carry the plurality of electronic components dropped from the cutting rail, and make the plurality of electronic components The electronic component moves along a material walking line; an electronic component stabilizing device, including: a material guide wheel, which is arranged outside the material walking line and has a circular arc surface; a motor is connected to the material guide wheel to drive The rotation of the material guide wheel; and a negative pressure generator, which is arranged at the bottom of the material guide wheel and is configured to generate a suction force, so that each electronic component falling from the material discharge track is sucked to the material guide wheel , And attached to the arc surface of the guide wheel, and push forward with the rotation of the guide wheel; wherein, the linear speed of the guide wheel and the walking line of the electronic component on the rotating disc The speed is the same, when the electronic component is no longer attracted by the suction of the negative pressure generator to leave the guide wheel, the electronic component can stably advance along the material walking line on the rotating disc; a plurality of image capturing devices , Based on capturing images from various viewing angles of the electronic component for appearance inspection; and a collecting device, based on collecting the electronic component based on the appearance inspection results. The appearance inspection device according to claim 11 further includes a material guiding device, which is disposed downstream of the electronic component stabilizing device. The appearance inspection device according to claim 12, wherein the material guiding device includes a material guiding block, which is disposed inside the material walking line and has a circular arc surface.

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