COMPONENT HANDLING
20220330465 · 2022-10-13
Inventors
Cpc classification
H05K13/0812
ELECTRICITY
H01L21/67144
ELECTRICITY
H05K13/0413
ELECTRICITY
International classification
H05K13/00
ELECTRICITY
Abstract
A device for handling components that is designed and equipped to handle components with multiple lateral surfaces and/or edges of the lateral surfaces. The device has at least one receiving tool, which is arranged on a turning device, for a respective component of the components, where the receiving tool is designed and equipped to receive the respective component on one of the component cover surfaces. The turning device is designed and equipped to rotate the receiving tool on a turning plane about a turning axis, and in the process optionally convey a component located on the receiving tool from a receiving position to one or more orientation positions, optionally one or more inspecting positions, a setting-down position, and optionally an ejecting position. The device also has a holding and supplying device, which faces the receiving position, for a component supply, and a discharge device.
Claims
1. An apparatus for handling components, wherein the apparatus is set up to handle components with several lateral surfaces and/or edges of the lateral surfaces, the apparatus has at least one receiving tool, arranged on a turning device, for one of the components, where the tool is set up to receive the respective component at one of its top surfaces, the turning device is set up to, rotate the pick-up tool in a turning plane about a turning axis, and to convey a component located on the pick-up tool from a pick-up position optionally into one or more orientation positions, optionally into one or more inspection positions, to a set-down position, and optionally into an ejection position, whereby the apparatus comprises a holding and feeding device for a component stock facing the receiving position, wherein a discharge device is intended and set up to convey one of the components at a time from the component stock located in the holding and feed device towards or to the respective pick-up tool located in the pick-up position, and the holding and feeding device is set up to align from the component stock to at least the respective component to be dispensed relative to the receiving tool located in the receiving position in such a way that a lateral surface of the component which encloses an acute angle with the turning plane encloses an angle of about 30° to about 60° with the turning plane, or a lateral surface of the component, which encloses an obtuse angle with the turning plane, encloses an angle of about 120° to about 150° with the turning plane, characterized in that the turning device is further set up to convey the component from the pick-up position to the set-down position in an angular orientation of the lateral surfaces relative to the turning plane, and wherein a component inspection device is set up to inspect the component conveyed by the turning device with the angular orientation of the lateral surfaces relative to the turning plane in the inspection position.
2. The apparatus for handling components according to claim 1, wherein at each inspection position, as optical component inspection device, two imaging devices and their illumination devices are distributed in an X arrangement in such a way that a first lateral surface of the component is inspected with the first illumination device and the first imaging device, and a second lateral surface adjacent to the first is inspected with the second illumination device and the second imaging device.
3. The apparatus for handling components according to claim 1, wherein the pickup tool is adapted and set up to pick up a component having four lateral surfaces to be optically inspected, and along the transport path of the component two pairs of optical component inspection devices are arranged in an angular arrangement outside the transport path of the component along the circumference of the turning device, the transport path of the component being substantially circular segment-shaped.
4. The apparatus for handling components according to claim 2, wherein as illumination devices for infrared transmitted-light inspection the imaging devices are each assigned an infrared OR) illumination device opposite them, wherein each illumination device is activated by a control arrangement when the pick-up tool with the component is located in the detection range of the respective imaging device, or the illumination devices are permanently activated.
5. The apparatus for handling components according to claim 1, wherein the orientation position serves to correct the position and orientation of the component on the pick-up tool, wherein a device for aligning the component is provided and set up to align the component relative to a center of the pick-up tool in at least one orientation angled to the transport path and/or in a direction of rotation relative to the central longitudinal axis of the pick-up tool.
6. The apparatus for handling components according to claim 1, wherein the device for alignment comprises two sliders which are movable towards and away from each other and which comprise mutually oriented slider sections which are intended and arranged to come into contact, at least in sections, with two mutually opposite, first side or lateral surfaces of the component located on the receiving tool, in order to align the component.
7. The apparatus for handling components according to claim 6, wherein the sliders are arranged to move the component in at least one of the following ways one of the two sliding sections toward an inspection position and rotate it while the pick-up tool holds the component.
8. The apparatus for handling components according to claim 1, the apparatus comprising 8, 16, 24, 32, 48 or more pick-up tools arranged at equal angular intervals along the circumference of the turnover device, which has a circular or star shape.
9. The apparatus for handling components according to claim 1, wherein at the pick-up position of the component from the component stock located in the holding and feeding device, the orientation position for centering and aligning the component on the holding tool, and/or the set-down position for setting down the component a stroke device is provided to effect a radial move of the pick-up tool away from the axis of rotation of the turnover device in the direction of the component stock located in the holding and feeding device to pick up the component, the device for centering and aligning the component, and/or the receiving device to set down the component.
10. The apparatus for handling components according to claim 9, wherein the stroke device for the radial stroke comprises a servo motor or a cam/rocker arm arrangement at the respective position in order to move the pick-up tool in a controlled manner in the longitudinal direction of the pick-up tool.
11. A method of handling components having a plurality of lateral surfaces and/or edges of the lateral surfaces, comprising the steps: providing a component stock in a holding and feeding device for the component stock so that it faces a pickup position, conveying one of the components at a time by a discharge device from the component stock located in the holding and feed device in the direction of or to the respective pick-up tool located in the pick-up position, picking up one of the components by at least one pick-up tool arranged on a turning device on a top surface of the component, rotating of the pickup tool in a turning plane around a turning axis, conveying the component located on the pick-up tool from a pick-up position to at least one inspection position, optionally moving the component from the pick-up position to one or more inspection positions, orientation positions, a set-down position, and optionally an ejection position, aligning the component stock in the holding and feeding device in such a way that at least the respective component to be dispensed is positioned relative to the pick-up tool located in the pick-up position such that a lateral surface of the component which encloses an acute angle with the turning plane encloses an angle of about 30° to about 60° with the turning plane, or a lateral surface of the component, which encloses an obtuse angle with the turning plane, encloses an angle of about 120° to about 150° with the turning plane, characterized in that the turning device conveys the component from the pick-up position to the set-down position in an angular orientation of the lateral surfaces relative to the turning plane, and in that a component inspection device inspects the component conveyed by the turning device with the angular orientation of the lateral surfaces relative to the turning plane in the inspection position.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0094] Further features, characteristics, advantages and possible variations will become clear to a person skilled in the art from the following description, in which reference is made to the accompanying drawings. Here, Figs. schematically show an optical inspection device for a component.
[0095]
[0096]
[0097]
[0098]
[0099]
[0100]
[0101]
[0102]
[0103]
[0104]
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0105]
[0106] In the illustrated variant, see also
[0107] The component handling apparatus 100 has a turning device 150 in the form of a turning wheel. At the radially outer edge region of the turning device 150, a plurality of (in the variant shown 16, but there may also be, for example, 8, 24, 32 or another number) pick-up tools 160 are arranged at equal angular intervals along the circumference of the turning device 150, which has a circular ring or star shape.
[0108] Each of the pick-up tools 160 serves to pick up one of the components C at its top surface e in the pick-up position 20 from the component stock BV. The turning device 150 has a motor drive 170 for rotating the turning device 150 in a turning plane WE about a turning axis WA. In this case, the turning plane coincides with the plane in which the pick-up tools 160 rotate. The turning axis WA coincides with the center axis of the wheel-shaped turning device 150. In the variant shown, a component C located at the pick-up tool 160 is conveyed during rotation from the pick-up position 20 to one or more, here one, orientation positions 22, 24, one or more inspection positions 26, 28, to a set-down position 32, and optionally to an ejection position 34.
[0109] For this purpose, the pick-up tools 160 are arranged facing radially outward on the (imaginary) circumference of the star-shaped or wheel-shaped turning device 150 and carry the components C. In the variant shown, the pick-up tools 160 can be moved radially with respect to the turning axis WA of the turning device 150. Thus, these pick-up tools 160 can pivot and convey the components C, each fixed to one of the pick-up tools 160, within a pivot angle—here between 0° and 180°—between the pick-up position 20 and the set-down position 32 (or up to the ejection position 34).
[0110] In the variant shown, a discharge device 180 comprises a needle controlled by a control system or operates, for example, in a non-contact manner with a laser beam to release the components C individually from the component stock BV to be fed to the turning device 150. Each of the pick-up tools 160 is arranged, when it is closest to the discharge device 180 at the 0° position of the turning device 150, to receive a component from the component stock BV at the pick-up position 20. Thus, the discharge device 180 conveys one of the components C at a time from the component stock BV located in the holding and feeding device 30 to the respective pick-up tool 160 located in the pick-up position 20.
[0111] The holding and feeding device 30 is rotatably mounted about its central longitudinal axis in such a way that, from the component stock BV, the respective component C to be dispensed can be aligned relative to the receiving tool 160 located in the receiving position 20 in such a way that a optically inspectable lateral surface a, b, c, d of the component C, which encloses an acute angle with the turning plane WE, encloses an angle alpha of about 30° to about 60° with the turning plane WE, or an optically inspectable lateral surface of the component C, which encloses an obtuse angle with the turning plane WE, encloses an angle beta of about 120° to about 150° with the turning plane WE. This is illustrated in
[0112] In other words, a side edge g of the component C oriented substantially perpendicular to the top or bottom surface of the component C precedes two lateral surfaces a, b of the component C adjacent to the side edge g on the turning or transport path WB of the component C along the circumference of the turning device 150 from the pick-up position 20 to the set-down position 32 (or to the ejection position 34). This is illustrated in
[0113] This ensures that the lateral surfaces of the component C to be inspected optically do not lie in an orientation transverse to the turning plane WE along the circumference of the turning device 150. Thus, the inspection of the lateral surfaces of the component C to be inspected can be carried out without the imaging devices and their illumination devices having to enter the transport path WB or the transport path of the component C, or without the component C having to be moved radially outward or inward at the pick-up tool 160 in order to enter the optical path of the imaging devices and their illumination devices. Nevertheless, (for example in the case of a component C with four lateral surfaces) all four lateral surfaces can be inspected during the transport path of the component C from the pick-up position 20 to the set-down position 32 at the one (um) turning device 150. This is not possible with previously known devices, which require two mutually orthogonally oriented turning devices, in which the component is transferred from one to the other turning device.
[0114] For suction of the component C in the pick-up tool 160, for holding the component C on the pick-up tool 160, for depositing the component C with or without controlled blow-off impulse, and for free blow-off of the component C from the pick-up tool 160, the pick-up tools 160 are connected to a pneumatic unit not further illustrated. The pneumatic unit, controlled by the controller, applies positive or negative pressure to the individual pick-up tools 160 in a valve-controlled manner at the respective time or period required in order to pick up, hold and release the components C individually.
[0115]
[0116] In the variant illustrated here, the component C is conveyed from the pick-up position to the set-down position 32 in an angular orientation of 45° or 135° (± about 30°) of the lateral surfaces a, b, c, d relative to the turning plane WE. In this case, the turning or transport path WB of the component C along the circumference of the turning device 150 is free/unaffected by components of optical component inspection devices.
[0117]
[0118] Thus, in each of the two successive inspection positions, two lateral surfaces can be inspected optically at the same time when the component C is at the corresponding position, without the imaging devices and their illumination devices having to enter the transport path of the component C, or the component C having to be moved radially outward or inward on the pick-up tool 160 in order to enter the optical path of the imaging devices and their illumination devices.
[0119] In particular,
[0120] Thus, at the first inspection position 26, the first pair of imaging devices 302A, 304A and their illumination devices 306A, 308A inspect the adjacent lateral surfaces d and a of the component C in transmitted light, and at the second inspection position 28, the second pair of imaging devices 302B, 304B and their illumination devices 306B, 308B inspect the adjacent lateral surfaces c and b of the component C in transmitted light.
[0121] In a variant of the apparatus, to further reduce cycle time, the first pair of imaging devices 302A, 304A and the second pair of imaging devices 302B, 304B may each be associated with a separate image data processing device for evaluating acquired image data of the lateral surfaces of component C, which may be connected to a central machine control device.
[0122] In the variant shown, the component C is inspected in transmitted light (with infrared light). In this case, an arrangement for inspection with reflected light is also possible in addition or instead, in which the illumination devices 306, 308, for example, surround the imaging devices 302, 304 in an annular manner or are designed as an array (LEDs) emitting two different wavelengths and are oriented to the location at which the lateral surfaces a, b, c, d to be inspected are located in the respective inspection position 26, 28.
[0123] Here, the pairs of optical component inspection devices are each arranged at the edge outside a corridor bounded by two lines K in
[0124] Thus, infrared (IR) and/or reflected light illumination devices 306, 308 are associated with each of the imaging devices 302, 304 as illumination devices for infrared transmitted light inspection and/or reflected light inspection. Each illumination device 306, 308 is to be activated by a control arrangement which also synchronizes an image acquisition by the imaging devices 302, 304 when the pickup tool 160 with the component C is in the detection range of the respective imaging device 302, 304. In another variant, the illumination devices 306, 308 are permanently activated.
[0125] Before the component C is inspected optically, in a variant, provision is made for correcting the position and orientation of the component C on the pick-up tool 160 in one or more orientation positions 22, 24, or for orienting it appropriately for the subsequent inspection. In the variant illustrated in
[0126] Provided that the component C is aligned in two orientation positions 22, 24, the focusing effort of the imaging devices and/or their illumination devices is reduced in the two subsequent inspection positions. In another variant, it is envisaged to align the component C in only one direction at an angle to the transport path WB, then to detect the position of the component C relative to the pick-up tool 160 or its suction pipette 162 by means of a radially outer imaging device 320, optionally also to detect the properties of the top surface of the component C lying away from the pick-up tool, and to determine the focusing paths of the imaging devices 302, 304 in the subsequent inspection positions 26, 28 and/or their illumination devices 306, 308.
[0127] Based on these determined focusing paths, the imaging devices 302, 304 and/or their illumination devices are then moved by a controller to focus in one of the subsequent inspection positions or in both of the subsequent inspection positions before/when/during/after the component C moves to the corresponding inspection position 26, 28. In a further variant not illustrated, no orientation position at all is provided to which the component C is to be aligned. Rather, the position of the component C taken over from the component stock BV, possibly with a twist of a few degrees and a few 1/100 mm up to a few mm, is directly detected by means of a radially outer imaging device 320 and from this the focusing paths of the imaging devices 302, 304 and/or their illumination devices 306, 308 in the two subsequent inspection positions 26, 28 is determined accordingly. Subsequently, with a control, the imaging devices and/or their illumination devices are then moved to focus before/when/during/after the component C reaches the corresponding inspection position 26, 28.
[0128] Provided that at least one alignment device 400 is provided with the two slides 402, 404 movable towards and away from each other, the slides 402, 404 serve to push and/or rotate the component C towards an inspection position in a direction oriented towards at least one of the two sliding sections 406, 408, while the pick-up tool 160 holds the component C.
[0129]
[0130]
[0131]
[0132] The variant illustrated in
[0133] If necessary, in a variant—see also
[0134] In a variant, the present arrangement has only one turning device with, for example, 24 pick-up tools. The turning device is rotated by 45° (or in a range between 30°-60°) to the X, Y main axes. In this variant, the component stock is arranged above the turning device and the deposit below it. The inspection system with (four) imaging sensors, beam deflectors (mirrors) for lateral surface inspection of the components at two inspection positions is able to directly inspect the lateral surfaces at two non-parallel edges each and without a Z-stroke of the pick-up tools during a rotation or movement of the turning device. The absence of a Z-stroke on the pick-up tools in the inspection position for the lateral surfaces can lead to time savings and thus more component throughput.
[0135] The variants of the apparatus described above, as well as its construction and operating aspects, are merely intended to provide a better understanding of the structure, operation and features; they do not limit the disclosure to the variants, for example. The Figs. are partially schematic, with significant features and effects shown, in some cases significantly enlarged, to illustrate the functions, operating principles, technical variants and features. In this regard, each mode of operation, principle, technical variant and feature disclosed in the Fig. or in the text can be combined with all claims, each feature in the text and in the other Fig., other modes of operation, principles, technical variants and features contained in or resulting from the present disclosure may be freely and arbitrarily combined so that all conceivable combinations are attributable to the described procedure. Combinations between all individual variants in the text, i.e., in each section of the description, in the claims, and also combinations between different variants in the text, in the claims, and in the Figs. are included. Also, the claims do not limit the disclosure and thus the possible combinations of all disclosed features with each other. All disclosed features are also explicitly disclosed herein individually and in combination with all other features.