TWI663111B - Electronic component stabilizing device and appearance inspection apparatus therefor - Google Patents

Abstract

The electronic component stabilization device in this case is suitable for appearance inspection equipment. The rotating disk of the appearance detection equipment carries the electronic components dropped by the blanking track and moves it along the material walking line. The electronic component stabilization device includes: a material guide wheel, which is disposed outside the material traveling line and has an arc surface; a motor, which is connected to the material guide wheel to drive the rotation of the material guide wheel; and a negative pressure generator, which is provided on the material guide wheel. At the bottom, a suction force can be generated so that the electronic components falling from the feeding track are sucked to the guide wheel and attached to the arc surface of the guide wheel, and pushed forward with the rotation of the guide wheel. The linear speed of the material guide wheel is the same as the linear speed of the electronic component on the rotating disk. When the electronic component is no longer attracted by the suction of the negative pressure generator and detaches from the material guide wheel, the electronic component can stably run along the rotating disk. The material walking line advances.

Description

Electronic component stabilization device and applicable appearance inspection equipment

This case relates to an electronic component stabilization device, and more particularly to an electronic component stabilization device suitable for appearance inspection equipment.

Existing electronic component appearance inspection equipment generally arranges electronic components by a vibrating disk and arranges them on a rotating disk. The rotating disk transports the electronic components to the front of the lens to take an image for testing the appearance. The test results are collected by category.

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 track 12, a low-vibration block 13, a glass disc 14, and a material guide block 15. The feeding device 11 sends out the electronic components 10 through the feeding rail 12, and a low-vibration block 13 is provided at the bottom of the feeding rail 12, and is fixed under the feeding rail 12 by a fixing screw 131 to provide the receiving electronic component 10 from the feeding. The track 12 falls on a bridge of a glass disc 14. When the electronic component 10 is shaken 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, and the glass disc 14 undertakes the fall Electronic component 10, and the linear velocity of the glass disc 14 is greater than the feeding speed of the feeding track 12, so that after the electronic components 10 fall on the glass disc 14, the distance between them can be pulled apart to facilitate the rear-end lens image acquisition. Appearance inspection, and finally collect the electronic components 10 into the collecting device 16.

Because the rotation speed of the glass disc 14 is higher than the feeding speed of the blanking track 12, the electronic component 10 falls on the glass disc 14 and is prone to falling and deflection. Therefore, a guide block is provided above the glass disc 14 15. It is fixed near the blanking place and has a curved surface. By the rotation of the glass disc 14, the edge of the electronic component 10 touches the curved surface of the material guide block 14, so that the electronic component 10 is aligned on all lines. Direction.

This conventional technology can overcome the problem of material instability and instability for the appearance inspection equipment of the glass disc 14 at a low speed (below 5 rpm) production capacity, but when the speed of the glass disc 14 is more than twice the current production speed, the material The problem of skew instability cannot be overcome, and the skew ratio 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 to facilitate transportation, the glass disc 14 is charged, so that the electronic component 10 is adsorbed to the glass disc 14 by an electrostatic adsorption force. However, whether to provide static electricity through a device such as an electrostatic brush, an ionizer, or a conductive plate, it will increase the cost of the equipment, and the operator may also be electrostatically charged and have safety issues. In addition, the electrostatic supply device is also prone to sticking to dust, thereby increasing the difficulty of cleaning.

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

The purpose of this case is to provide an electronic component stabilization device and an applicable appearance inspection device, which are structured to improve the stability of blanking, overcome the problem of instability and instability of blanking in the conventional technology, and thereby increase the capacity of the appearance inspection equipment.

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

In order to achieve the above object, the present invention provides an electronic component stabilization device, which is suitable for an appearance inspection device. The appearance detection device includes a feeding track and a rotating disk. The rotating disk carries a plurality of electronic components dropped by the feeding 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 disposed outside the material traveling line and has a circular arc surface; a motor connected to the material guide wheel to drive the material guide wheel to rotate; and a negative pressure generator, It is arranged on the bottom of the guide wheel and is structured 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. The linear speed of the material guide wheel is the same as the linear speed of the electronic component on the rotating disk. When the electronic component is no longer attracted by the suction of the negative pressure generator and detaches from the material guide wheel, the electronic component can be stably on the rotating disk. Follow the material walking line.

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

In one embodiment, the arc surface of the material guide wheel is circumscribed with the material running line.

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

In one embodiment, 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.

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 walking line.

In one embodiment, the pipe has an opening near one end of the electronic component.

In one embodiment, the distance between the arcuate surface of the material guide wheel corresponding to the opening of the pipe and the end exit of the blanking track is substantially equal to the length of the electronic component.

In an 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 running line is about 0 to 15 degrees.

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

In order to achieve the above object, the present invention provides an appearance inspection device including a feeding device, a rotating disk, an electronic component stabilization device, a plurality of image taking devices, and a collecting device. The feeding device has a feeding track and is structured to push a plurality of electronic components. The rotating disk structure carries a plurality of electronic components that are dropped by a 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 disposed outside the material traveling line and has a circular arc surface; a motor connected to the material guide wheel to drive the material guide wheel to rotate; and a negative pressure generator, It is arranged on the bottom of the guide wheel and is structured 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 The wheel rotates and pushes forward; among them, the linear speed of the material guide wheel is the same as the linear speed of the electronic component on the rotating disk. When the electronic component is no longer attracted by the suction force of the negative pressure generator and leaves the material guide wheel, the electronic The component can stably advance on the rotating disk along the material walking line. The plurality of image capturing devices are configured to capture images from various perspectives of the electronic component for appearance inspection. The collecting device is configured to collect electronic components according to the appearance inspection results.

In one embodiment, the appearance detection device further includes a material guide device, which is disposed downstream of the electronic component stabilization device.

In one embodiment, the material guiding device includes a material guiding block, which is arranged on the inner side of the material running line and has an arc surface.

Some embodiments embodying the features and advantages of this case will be described in detail in the description of the subsequent paragraphs. It should be understood that this case can have various changes in different aspects, all of which do not depart from the scope of this case, and the descriptions and drawings therein are essentially for the purpose of illustration, rather than limiting the case.

This case mainly provides an electronic component stabilization device, which is suitable for appearance inspection equipment, and is structured to improve the stability of blanking, thereby increasing the productivity of the appearance inspection equipment. Figures 3 and 4 show different perspective views of the appearance inspection equipment 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 image pickup device 6, and a collecting device 7. These devices are all provided in the appearance detection device. 2 of the base 21.

The conveyance device 3 includes a rotating disk 31 and a motor 32. In one embodiment, the rotating plate 31 is a circular transparent plate made of glass. The rotating plate 31 is horizontally arranged and is power-connected to the motor 32, thereby being capable of being driven by the motor 32 to rotate horizontally, and as a bearing for the electronic component 10. The platform moves the electronic component 10 to each station of the imaging device 6 for appearance inspection through rotation, and moves to the collecting device 7 for final collecting operation. The path that the electronic component 10 moves with the rotating disk 31 is defined as a material walking line (as shown by the dotted line on the rotating disk 31 in FIG. 6), which is a circular path having a radius slightly smaller than the radius of the rotating disk 31.

The feeding device 4 includes a vibration plate 41 and a feeding rail 42. In one embodiment, the vibrating disk 41 is a circular disk, which is structured to transfer the electronic component 10 from the center of the disk to the spiral path of the disk through a circular vibration, and sequentially arrange to the outermost path to enter the blanking track 42. The unloading track 42 is connected to the vibration plate 41, which is a linear concave groove, which can carry the electronic components 10 and form the electronic components 10 in a linear arrangement, and pushes the electronic components 10 straight forward and falls onto the rotating disk 31. The end of the blanking track 42 extends to a surface close to but not in contact with the rotating disk 31, and the blanking track 42 is preferably arranged along a tangential direction of the rotating direction of the rotating disk 31.

The appearance detection device 2 includes a plurality of image capturing devices 6 arranged around the rotating disk 31, and each image capturing device 6 is respectively arranged adjacent to the rotating disk 31 at different angles according to different image capturing angles. Each image capturing 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 perspectives of the electronic component 10 for appearance inspection. The image capturing device 6 may further include a reflecting mirror as required, which is configured corresponding to the rotating disk 31 so as to reflect the electronic component 10 carried on the rotating disk 31 for the photographing lens 61 to capture an image of the electronic component 10; This arrangement can reduce the number of the image capturing device 6 disposed on the rotating disk 31.

The aggregate device 7 includes a plurality of aggregate boxes 71 and a plurality of blowing nozzles 72 corresponding to the plurality of aggregate boxes 71. Each of the mouthpieces 72 is arranged toward the corresponding aggregate box 71, and is connected to a stable positive pressure with adjustable pressure. Gas source. Each mouthpiece 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 of blowing by each mouthpiece 72 through the solenoid valve, thereby based on the detection result of each electronic component 10 Each electronic component 10 is blown into a corresponding header 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 failure (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 appearance plating. These electronic components 10 with uneven plating can be re-plated and then re-plated. Use after inspection), one collection box 71 collects electronic components 10 that pass the test, 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 acquired. Of course, the number and usage configuration of the collecting box 71 can be adjusted according to different needs without being limited to the foregoing embodiment.

In order to effectively obtain the images of the electronic component 10 from various angles of view, the electronic component 10 must maintain a certain distance on the rotating disk 31 to facilitate the image capturing of the imaging lens 61 of the imaging device 6, so the rotation speed of the rotating disk 31 is necessarily greater than the electronic component 10. The blanking speed is used to open the distance between the electronic components 10. Therefore, when the electronic component 10 falls on the rotating disk 31 with a relatively fast rotation speed, it is unavoidable that a skew phenomenon occurs to affect the image quality of the rear end. 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 structured to increase the stability of the blanking for effective appearance inspection.

Figures 5 to 8 show the partial structure of the appearance inspection equipment and schematic diagrams of the electronic components carried in order to clearly explain the design of the electronic component stabilization device in this case. Please refer to Figures 3 to 8 at the same time. The electronic component stabilization device 5 is disposed at the end exit of the blanking track 42 (ie, the blanking place), and is disposed outside the material running line of the rotary disc 31 (shown by a circular dotted line on the rotary disc 31). The electronic component stabilization device 5 includes a material guide wheel 51, a motor 52, and a negative pressure generator 53. The guide wheel 51 has a substantially disk shape, and is arranged horizontally like the rotating disk 31 and is power-connected to the motor 52, thereby being capable of being driven by the motor 52 to rotate horizontally. The material guide wheel 51 is provided outside the material traveling line and has a smooth arc surface 511. In one embodiment, the circular arc surface 511 is circumscribed with the material running line. When the electronic component 10 touches the arcuate surface 511 of the material guide wheel 51, it can be guided to be sequentially arranged on the material running line as the material guide wheel 51 rotates.

In an embodiment, the tangent speed of the arcuate surface 511 of the guide wheel 51 is the same as the tangent speed of the contact surface of the rotary disc 31 carrying the electronic component 10, in other words, the rotational 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 material guide wheel 51 is opposite to the rotation direction of the rotating disk 31. For example, the rotation plate 31 rotates in a counterclockwise direction and the material guide wheel 51 rotates in a clockwise direction to bring the electronic component 10 away from the falling material. The image pickup device 6 moves. Alternatively, when the arrangement direction of the blanking track 42 is changed, the rotary disk 31 may be rotated in a counterclockwise direction and the guide wheel 51 may be rotated in a clockwise direction.

In an embodiment, the gap H between the bottom of the material guide wheel 51 and the surface of the rotating plate 31 is about 1/3 to 2/3 of the thickness of the electronic component 10 so that the electronic component 10 can abut against the circle of the material 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 one embodiment, the negative pressure generator 53 is disposed on one side of the outlet near 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 walking line, and the pipe 531 has an opening 532 at one end near the blanking place. When the negative pressure generator 53 forms a negative pressure on the pipe 531 by using a suction method, for example, a suction force is generated through the opening 532, so that the electronic component 10 falling from the feeding rail 42 is sucked to the guide wheel 51 and attached to the guide wheel 51. The arc surface 511 of the material guide wheel 51 and the surface of the rotating disk 31 are pushed forward as the material guide wheel 51 rotates. Since the tangent speed of the arc surface 511 of the guide wheel 51 is the same as the tangent speed of the contact surface of the rotary disc 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 and leaves the guide wheel 51 The advance speed of the electronic component 10 is the same as the tangential speed of the contact surface of the rotary plate 31 carrying the electronic component 10, and the electronic component 10 can stably advance along the material walking line on the rotary plate 31, so the stability of blanking can be further improved.

In an 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 running line is maintained in an angle range of about 0 to 15 degrees.

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

In an embodiment, the distance W between the arcuate surface 511 of the material guide wheel 51 corresponding to the opening 532 of the pipe 531 of the negative pressure generator 53 and the end exit of the blanking track 42 is approximately the material distance of one material. That is, the length W is substantially equal to the length of the electronic component 10. The distance W can also be adjusted according to the length of different electronic components 10.

In one embodiment, because the electronic component stabilization device 5 improves the stability of blanking, the end of the blanking track 42 does not need to be provided with a low-vibration block.

In one embodiment, the appearance detection device 2 may optionally include a material guide device 8 disposed downstream of the electronic component stabilization device 5. The material guide device 8 includes a material guide block 81, which is disposed above the rotating disk 31 and located inside the material walking line. The guide block 81 has a smooth arc surface 811 on one side facing the material walking line. When the edge of the electronic component 10 touches the arc surface 811 of the 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 substantially avoided the problem of blanking and skewing, when the electronic component 10 is separated from the material guide wheel 51, most of the electronic components 10 are aligned on the material walking line. Therefore, in one embodiment, the appearance The detection device 2 does not need to be provided with a material guide device 8.

In summary, with the design of the electronic component stabilization device 5 of the present case, when the electronic component 10 falls from the outlet of the feeding rail 42 of the feeding device 4 to the surface of the rotating disk 31, the electronic component 10 will be firstly subjected to a negative pressure generator. The suction force of 53 is sucked 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 speed of the material guide wheel 51 is the same as the linear speed of the electronic component 10 on the rotating disk 31, when the electronic component 10 is no longer attracted by the suction of the negative pressure generator 53 and leaves the material guide wheel 51, the electronic component 10 is It can advance stably and correctly along the material running line on the rotating disk 31. Therefore, the electronic component stabilization device 5 in this case can further improve the stability of blanking, overcome the problem of instability and instability of blanking in the conventional technology, enable the image capturing device 6 at the back end to effectively capture images, and improve the detection performance of the appearance inspection device 2. On the other hand, due to the greatly improved stability of blanking, 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 increasing the production capacity of the appearance inspection device 2, such as one minute The detection capacity of 8,000 or even 10,000 materials has greatly enhanced the industrial application value of appearance inspection equipment 2. In addition, by the design of the electronic component stabilization device 5, the appearance inspection device 2 of this case does not need to use a static electricity supply device to make the electronic component 10 be adsorbed on the rotating disk 31 by electrostatic attraction, so it is compared with the conventional appearance of a static electricity supply device Inspection equipment, the appearance inspection equipment 2 in this case can further reduce the equipment cost, increase the safety of the operator, and avoid the cleaning problem of the electrostatic supply device.

Even though the present invention has been described in detail in the above embodiments and can be modified in various ways by those skilled in the art, it is not inferior to those protected by the scope of the attached patent.

10‧‧‧Electronic components

11‧‧‧feeding device

12‧‧‧ unloading track

13‧‧‧Low vibration block

131‧‧‧ set screw

14‧‧‧ glass disc

15‧‧‧Guide block

16‧‧‧Collecting device

2‧‧‧Appearance Inspection Equipment

21‧‧‧ base

3‧‧‧ Conveying device

31‧‧‧Rotating disk

32‧‧‧ Motor

4‧‧‧feeding device

41‧‧‧Vibration plate

42‧‧‧Unloading track

5‧‧‧Electronic component stabilization device

51‧‧‧Guide wheel

511‧‧‧arc surface

52‧‧‧Motor

53‧‧‧ negative pressure generator

531‧‧‧pipe

532‧‧‧ opening

6‧‧‧Image taking device

61‧‧‧Photographic lens

62‧‧‧ Upright Slide

7‧‧‧ aggregate device

71‧‧‧collection box

72‧‧‧ mouthpiece

8‧‧‧ Guide device

81‧‧‧Guide block

811‧‧‧arc surface

V1‧‧‧ Traveling linear speed of electronic components on rotating disc

V2‧‧‧Rotating linear speed of material guide wheel

H‧‧‧Gap between the bottom of the guide wheel and the surface of the rotating disk

q‧‧‧ Angle between electronic component and material walking line

W‧‧‧ The distance between the opening of the pipe of the negative pressure generator and the end of the discharge track

Figure 1 shows the schematic diagram of the conveying mechanism of the current appearance inspection equipment. Fig. 2 shows a partial sectional view of the blanking place in Fig. 1. Figures 3 and 4 show different perspective views of the appearance inspection equipment of this case. Figures 5 to 8 show the partial structure of the appearance inspection equipment and schematic diagrams of the electronic components carried by it.

Claims (13)

An electronic component stabilizing device is suitable for an appearance detection device. The appearance detection device includes a feeding track and a rotating disk. The rotating disk carries a plurality of electronic components dropped by the feeding track and makes the plurality of electronic components along A material traveling line moves, and the electronic component stabilizing device includes: a material guide wheel disposed outside the material traveling line and having a circular arc surface; a motor connected to the material guide wheel to drive the material guide wheel Rotation; and a negative pressure generator, arranged at the bottom of the material guide wheel, and configured to generate a suction force, so that each of the electronic components dropped from the material feeding track is sucked to the material guide wheel and attached to the material guide wheel. The arc surface of the material guide wheel is pushed forward as the material guide wheel rotates; wherein, the linear speed of the material guide wheel is the same as the linear speed of the electronic component on the rotating disk. When the electronic component is no longer attracted by the suction force of the negative pressure generator and detaches from the material guide wheel, the electronic component can stably advance along the material walking line on the rotating disk. The electronic component stabilization device according to claim 1, which is provided at an 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 circumscribed with the material running 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 rotating 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 a direction of the pipe arrangement is substantially perpendicular to a tangent direction of the material walking line. The electronic component stabilization device according to claim 6, wherein the pipe has an opening near one end of the electronic component. The electronic component stabilizing device according to claim 7, wherein the distance between the opening of the guide wheel facing the opening corresponding to the pipe and the end exit of the blanking track is substantially equal to the length of the electronic component. The electronic component stabilization device according to claim 1, wherein when the electronic component is detached from the material guide wheel, the angle between the longitudinal direction of the electronic component and the material walking 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 includes: a feeding device having a feeding track configured to push a plurality of electronic components; a rotating disk configured to carry the plurality of electronic components dropped by the feeding track and making the plurality of electronic components The electronic component moves along a material traveling line; an electronic component stabilizing device includes: a material guide wheel disposed outside the material traveling line and having a circular arc surface; a motor 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 of the electronic components dropped from the material delivery track is sucked toward the material guide wheel And attached to the arc surface of the guide wheel and pushed 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 disk The speed is the same. When the electronic component is no longer attracted by the suction force of the negative pressure generator and detached from the guide wheel, the electronic component can stably advance along the material walking line on the rotating disk; The image capturing device is configured to capture images from various perspectives of the electronic component for appearance inspection; and an aggregate device is configured to collect the electronic component according to the appearance detection result. The appearance inspection device according to claim 11, further comprising a material guide device, which is disposed downstream of the electronic component stabilization device. The appearance inspection device according to claim 12, wherein the material guiding device comprises a material guiding block, which is arranged inside the material walking line and has an arc surface.