CN113955405B

CN113955405B - Manufacturing system for electronic device and manufacturing method for electronic device

Info

Publication number: CN113955405B
Application number: CN202110806070.6A
Authority: CN
Inventors: 马塞尔·弗赖穆特
Original assignee: Muehlbauer & CoKg GmbH
Current assignee: Muehlbauer & CoKg GmbH
Priority date: 2020-07-21
Filing date: 2021-07-16
Publication date: 2023-08-08
Anticipated expiration: 2041-07-16
Also published as: DE102020004376A1; CN113955405A; DE102020004376B4

Abstract

A manufacturing system for electronic devices comprises at least one transfer device arranged for transferring device elements of an electronic device, and a transfer drum having a plurality of drum sectors arranged for at least partly causing a transfer movement of the transfer device by means of a rotation about a rotation axis. The placement device is arranged to provide at least one electronic component and to arrange it at a placement point on the equipment element conveyed by said conveying device. Control means provided for preparing a correction value for each of a plurality of roller sectors to control movement of the transfer roller and the placement means based on the correction value for the roller sector having the smallest spatial distance (d) from the placement point.

Description

Manufacturing system for electronic device and manufacturing method for electronic device

Technical Field

A manufacturing system for an electronic device, such as for an RFID tag, and a manufacturing method for an electronic device are described herein.

Background

Devices for producing RFID tags are known in which electronic components are transported on a transport path or transport means, wherein the device elements transported on the respective further transport path, for example RFID antennas or textile layers, are arranged on the transported electronic components, in particular glued to the transported electronic components. For example, document WO 2018/01396 A1 discloses such a device.

It is also known to drive a conveyor track or conveyor belt for electronic devices or for components of electronic devices by means of rotatable conveyor rollers. One advantage here is that the conveyor track or conveyor belt can be received without sliding by a conveyor drum, which can be configured, for example, as a vacuum drum, and is set in motion by the rotation of the vacuum drum.

However, the known transfer cylinders, in particular vacuum transfer cylinders, have the disadvantage that they cannot be constructed as at least almost ideal cylinders and are arranged with ideal concentric support, or only with very high technical outlay. Thereby creating a small or minimal imbalance, surface irregularities and/or slight eccentric rotation of the transfer drum. These asymmetries, which are often even imperceptible to the naked eye, and due to the almost unavoidable mechanical tolerances of the manufacture, may cause fluctuations in the speed of the conveyor belt and/or the conveyor track driven by means of the conveyor rollers. Thereby, a repeated displacement of the components to be arranged on the conveyor belt and/or the conveyor track in the conveying direction of the conveyor belt and/or the conveyor track may occur.

In certain fields of application, such as in the manufacture of electronic devices, such undesirable placement shifts of a few micrometers have required correction and/or affected the quality of the manufactured product.

To overcome this problem, attempts have been made to improve the manufacturing accuracy of manufacturing systems for electronic devices, in particular of (vacuum) transfer drums, so as to reduce the displacement of the device elements due to asymmetry or manufacturing errors. The disadvantage here is that this can further greatly increase the additional costs of production and manufacture of the device for the application of the manufacture of electronic devices of device elements which have been manufactured very precisely, and that so far no ideal precision of any measurable manufacturing tolerances is at least practically impossible to achieve.

It is also known to make or equip rotation speed and/or position adjustments of the (vacuum) transfer drum during the placement process. However, a disadvantage here is that the production of electronic devices, for example for RFID tags, is generally designed with a high transport throughput or a high number of mass productions, so that the rotational speed of the (vacuum) transport cylinder used for this is very high. Active real-time adjustment of the high-speed rotating drum requires, on the one hand, a very high computational power for the adjustment process alone, for a position sensor, which is arranged to detect and output the current position of the high-speed rotating drum almost in real time exactly to a micron, and for continuously and exactly to a micron repositioning of the moving actuator of the rotating transfer drum or drum suspension. Furthermore, since not all the physical variables required for adjusting a rotating drum at high speed (e.g. the torque of the rotating drum or the current rotational acceleration of the drum) can be measured directly with the sensor, a virtual estimator for the required adjustment variables has to be formed by the control device, which on the one hand further increases the computational effort of the adjustment circuit to be formed and on the other hand at least radically reduces the adjustment accuracy.

Another possibility for reducing undesired displacement of the conveyor track or conveyor belt guided on the (vacuum) conveyor drum is that the device elements to be conveyed or the devices to be conveyed are arranged on the conveyor track or conveyor belt, respectively, spaced apart from one another in such a way that only a single device element or only a single device is conveyed past the placement point per rotation of the (vacuum) conveyor drum. In such a case, the placement offset caused by an asymmetry or manufacturing error in the (vacuum) transfer cylinder can be substantially compensated for by a constant placement offset. It is very disadvantageous here that the manufacturing speed of the entire manufacturing system for electronic devices, for example for RFID tags, is severely limited, wherein the transport of the device elements or devices by means of a conveyor track or conveyor belt guided on (vacuum) conveyor rollers constitutes a bottleneck for the entire manufacturing process, while only a small fraction of the transport capacity of the conveyor track or conveyor belt is used. The use of (vacuum) transfer drums, i.e. the efficient operation of the transfer rail or the transfer belt, does not function in such a way that the use of the drum even becomes disadvantageous with respect to other known drive devices for transfer rails or transfer belts, and therefore in operational practice it is very inefficient and thus meaningless to arrange only one device element per rotation of the drum on the transfer rail or the transfer belt.

Thus, despite existing manufacturing systems for electronic devices, such as for RFID tags, and known manufacturing methods for electronic devices, there continues to be a need for improved manufacturing systems or improved manufacturing methods to overcome the above-described drawbacks.

Disclosure of Invention

In order to solve the technical problems, a manufacturing system and a corresponding manufacturing method are provided.

A manufacturing system for electronic devices, comprising at least one transfer device arranged for transferring device elements of an electronic device, and a transfer drum having a plurality of drum sectors, arranged for at least partly causing a transfer movement of the transfer device by means of a rotation about a rotation axis.

In this case, the transfer drum may be configured as a vacuum drum, and the transfer device is configured to be at least partially contacted at the side of the vacuum drum. The vacuum drum can suck the conveyor belt at least partially, in particular without sliding, by means of vacuum or by means of a relative negative pressure, so that a rotation of the vacuum drum causes a corresponding movement of the conveyor belt that is guided at least partially over the vacuum drum. The rotation of the transfer cylinder or vacuum cylinder can be produced here by means of an electromechanical rotary drive which is regulated or controlled.

Placement means are also provided to provide at least one electronic component and to arrange it at a placement point on the equipment element conveyed by the conveying means.

Here, a placement point means a point or position in space at which a component placed by the placement device, respectively, comes into physical contact with the equipment element conveyed by the conveying device. Here, a placement point is a point or position in space that also exists independently of the actual ongoing placement process. In other words, a placement point is a point and location in space at which physical contact of the placed component with the equipment element conveyed by the conveyor is ideally planned. The placement points are the same point or position in space for each component to be placed by the placement device or to be arranged on the equipment element conveyed by the conveying device, respectively. In other words, a placement point is a predetermined point or location in space that is defined or definable independent of the actual operation of the manufacturing system. Alternatively, the placement point may also be described as a predetermined or predeterminable one-dimensional point or a predetermined or predeterminable two-dimensional surface in space, which is limited in its extent, in particular on the surface of the conveyor and/or the device element of the conveyor.

The arrangement of the electronic components on the device element may take place, for example, by the placement device dropping, ejecting, placing and/or transferring the corresponding electronic component. In a variant, the placement device may at least partially and/or temporarily contact or touch the transfer device and/or the separately transferred device element, in particular at the placement point. However, this is not necessary in all embodiments.

Control means provided for each of said plurality of cylinder sectors for preparing a predetermined correction value for controlling and/or adjusting the (rotational) movement of the transfer cylinder and the placement means based on the correction value for the cylinder sector with the smallest spatial distance from the placement point at the time.

Here, a cylinder sector means an especially imaginary spatial sector of a transfer cylinder having a bottom or end face at least approximately in the shape of a circular sector. If the transfer drum is at least substantially cylindrical, the drum sector is a cylinder sector. A drum sector is a tub sector if the transfer drum arches at least substantially in a tub shape towards or away from the central longitudinal axis or axis of rotation.

Here, the distance of the drum sector from the placement point means the shortest spatial distance of the surface of the drum sector from the predetermined or predefinable placement point, wherein the surface of the drum sector comprises at least a part of the surface of the transfer drum. In other words, the spatial distance of a roller sector from a placement point can be described as the length of the shortest possible path between the point on the surface of the roller sector and the placement point.

In embodiments in which the transfer drum partially and/or temporarily touches or touches the transfer device at the placement point, the drum sector that touches the transfer device at least at the placement point is the drum sector that has the smallest spatial distance from the transfer point. In other words, the minimum spatial distance of the cylinder sector from the placement point can also be definitely zero or have a value of substantially "0 mm".

If both cylinder sectors are the same distance from the placement point and the distance is the minimum distance from the placement point, the control means may control and/or adjust the placement means and/or the conveyor cylinder based on the correction values of the two cylinder sectors, respectively, which are the same distance from the placement point. Alternatively, in such a case, the control means may also implement the control of the placement means and/or the transfer drum based on only the correction value of the drum sector that is or is to be moved in the direction of rotation of the transfer drum towards the transfer point. In other words, if, in exception, the distance of the two cylinder sectors from the transfer point is the same and/or such equal distance is determined or assumed by the control, the control is performed based on the correction values of the two cylinder sectors or on the correction value of one of the cylinders.

One advantage of the manufacturing system is that placement accuracy of electronic components to be arranged on the device elements is improved, thereby reducing the number of misplaced electronic components.

Another advantage of the manufacturing system is that a correction value ("offset") can be determined for each roller sector, either once or iteratively, which can compensate for placement offset caused by manufacturing errors and/or slight eccentric rotation of the transfer roller. For this purpose, the cylinder can be divided at least conceptually or virtually into any number of cylinder sectors, wherein each cylinder sector can correspond to a fixed or iteratively evaluable correction value. The roller sector specific correction values may be maintained and/or stored by a controller.

On the one hand, it is thus possible to dispense with complex dynamic adjustments of the position of the placement device and/or the position or rotational speed of the transfer drum by means of feedback and/or a virtually equipped estimator of the physical parameters of the drum which cannot be detected directly. On the other hand, the entire surface of the conveyor belt driven by the conveyor rollers can be used for receiving and conveying the device elements, since correction values ("offsets") are determined and/or assigned for each roller sector, so that generally periodically repeated placement offsets, which are caused by manufacturing errors and/or slight eccentric rotation of the conveyor rollers and, as a result, fluctuations in the conveying speed of the conveyor belt, can be compensated, respectively.

In a variant of the manufacturing system, the roller sectors may be designed or divided in accordance with the spatial volume of the individual device elements to be transported by the conveyor belt, so that the individual device elements transported by the conveyor belt can be assigned to a roller sector with correction values. It can be stated in other words that each roller sector can have exactly one correction value, which corresponds to the desired placement offset for the device element of the electronic device conveyed by the conveying means, respectively. An advantage here is that the offset or correction value accuracy of each individual device element conveyed by the conveyor can be maximized, wherein the conveyor conveying capacity is not limited by the asymmetry or manufacturing errors of the conveyor rollers driving the conveyor.

In a further variant, the drum sector can be designed or divided in such a way that a plurality of device elements conveyed by the conveyor each correspond to a common correction or deviation value. It can be stated in other words that each roller sector can have exactly one correction value which corresponds to the desired placement offset of the plurality of equipment elements conveyed by the conveying means, respectively. An advantage here is that the implementation effort of the manufacturing system and the number of control interventions and/or movement instructions required for the conveying device and/or the conveying roller can be reduced, wherein each device element conveyed by the conveying device can each correspond to an at least acceptable correction or offset value.

Optionally, the control and/or regulation of the movement of the transfer drum and/or the placement device by the control device may comprise a control and/or regulation of the rotational speed of the transfer drum. In other words, the control and/or regulation of the transfer drum may comprise at least temporary acceleration and/or braking of the transfer speed of the transfer device and/or the rotational speed of the transfer drum. Here, the rotation speed of the transfer drum may determine the transfer speed of the transfer device. Thereby, the transport speed of the transport device can be changed or accelerated and/or braked by adjusting and/or controlling the rotational speed of the transport cylinder.

An advantage here is that by varying the transport speed of the transport means and/or the rotational speed of the transport cylinder, at least one placement offset ("offset in the F direction; offset in the X direction") of the equipment element with respect to the transport direction of the transport means can be corrected, wherein no movement of the transport means and/or the transport cylinder itself is required for this purpose. In particular in the mass production of electronic devices with high throughput of components and device elements, it is advantageous if, at the same time, there is a high precision requirement for the production of individual electronic devices, no production system is provided which can be moved freely in space or can be positioned with respect to the transport means, transport rollers and/or placement means. In order to correct/compensate for at least one placement offset of the equipment element in the component transport direction, the transport speed of the transport device and/or the rotational speed of the transport cylinder can be influenced/controlled/regulated by a controller. Another advantage of such (rotational) speed control is that it can be achieved with less energy more precisely than a (continuous) repositioning of the entire system component, especially in case of high throughput of the manufacturing system and correspondingly high rotational or transport speeds.

Alternatively or additionally, the movement of the transfer drum and/or the transfer device controlled by the control device may comprise a displacement and/or a swinging of the transfer drum and/or the placement device. In other words, the control may cause repositioning of the conveyor and/or the conveyor roller and/or the placement device or components of the placement device to compensate for the placement offset. The advantage of (continuous) repositioning of the conveyor and/or the conveyor roller and/or the placement device to compensate for the respective placement offset of the respective roller sectors is that placement errors of components on the equipment element can be counteracted in each of the three spatial directions.

For moving or (re) positioning the conveyor and/or the conveyor roller and/or the placement device, the manufacturing system may have in particular an electromechanically driven actuator arranged for moving the conveyor and/or the conveyor roller and/or the placement device in one, two or three spatial directions. In particular, the transfer drum and/or the transfer device may be displaceable and/or swingably movable or (re-) positionable. In other words, the conveyor roller and/or the placement device may be displaceable and/or swingably movable using an electromechanical drive.

Alternatively, the control means may be arranged for controlling the conveying means and/or the conveying roller and/or the placement means based on correction values for the roller sector with the smallest spatial distance from the placement point and based on correction values for the roller sector adjoining the roller sector with the smallest spatial distance from the placement point against the direction of rotation. In other words, the control means may take into account correction values of the roller sector currently closest to the transfer point and the roller sector expected to be next closest to the transfer point for controlling the transfer means and/or the transfer roller and/or the placement means. An advantage here is that the movement change control and/or acceleration change control of the conveyor and/or the conveyor roller and/or the placement device can be smoothed, in particular sharp changes in the movement direction and/or the acceleration of the conveyor speed and/or the rotational speed can be avoided.

The transfer drum may be rotated or rotated continuously or intermittently. Intermittent means that the transfer drum is stationary or not rotated during the placement of the electronic component at the place for a period of at least a few milliseconds, in particular for a period of at least a millisecond.

The conveyor may be configured as a conveyor belt, in particular an endless conveyor belt. In one variant, the device element conveyed by the conveyor, which may be in particular a conveyor belt, is attached in particular adhesively to the conveyor. One advantage here is that unintentional movements/displacements of the device elements during the passage/arrangement of the components by the placement device are counteracted.

Furthermore, the manufacturing system may have at least one first optical detection sensor arranged and configured for detecting the position of the equipment element on the conveyor. Alternatively or additionally, the manufacturing system may also have at least one second optical detection sensor detecting the position of the electronic component provided and/or placed by the placement device. An optionally present third optical detection sensor is arranged and configured for detecting characteristic errors and/or positioning errors of components arranged on the device element.

In a further development, the control device may also be provided for storing the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor. The control device may determine correction values for the respective cylinder sectors of the transfer cylinder based on the detection of the first optical registration sensor and/or the second optical registration sensor and/or the third optical registration sensor.

In other words, the control device may be provided for determining, during a continuous production run of the production system or during a calibration run of the production system specifically intended for this purpose, one or more periodically occurring placement errors or deviations of the electronic components on the individual device components using the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor, and, based on the determination, dividing the transport cylinder (for example conceptually or logically and/or virtually) into a plurality of cylinder sectors and/or for each of the plurality of cylinder sectors to correspond to a correction value ("deviation") that is required or measured for correcting the respective determined placement error or deviation.

If the determination of the periodically occurring placement errors or placement deviations is carried out during the continuous operation of the manufacturing system, the end of the determination process and/or the start of the control of the conveyor and/or the conveyor drum can be initiated automatically, for example after a certain number of placement errors have been determined, on the basis of correction values entered on the control device, which are generalized by the operator.

Instead of dividing the cylinder sectors (conceptually or virtually) by the control device, this can also be permanently assigned to the production system, whereby the control device only assigns the corresponding correction values determined for this purpose to the corresponding assigned cylinder sectors or stores the correction values for the cylinder sectors.

Each of the roller sectors may be configured similar to or different from each other. In other words, the cylinder sectors may divide the transfer cylinder into sectors of the same or different shape or different size from each other. The number of cylinder sectors may be even or odd. For example, the transfer drum may have 2, 3, 4, 5, 6, 7, 8 or more drum sectors. An odd number of cylinder sectors is particularly advantageous for periodically repeated placement errors not caused by a slight eccentric rotation, but by manufacturing errors of the cylinder surface.

In a variant, the cylinder sectors can also be infinitely small, so that the number of cylinder sectors is infinite, i.e. when the correction value is determined using a function equation.

In order to determine which cylinder sector is least distant from the placement point, the manufacturing system may have a position sensor for the transfer cylinder, which is provided for detecting the rotational position of the transfer cylinder and/or for transmitting it to the control device. The position sensor may for example determine the position of the transfer drum using a magnetic sensor or using an additional optical detection sensor. For this purpose, the transfer cylinder can have optically identifiable markings and/or magnetic elements associated therewith.

Alternatively or additionally, the manufacturing system, in particular the control device, can also determine the rotational position of the transfer drum using a second optical detection sensor and/or by means of a separate optical detection drum sensor, which can also be provided, for example, for detecting optically identifiable markings on the side of the transfer drum. Furthermore, the manufacturing system, in particular the transfer drum, may also have an electronic rotational position sensor and/or control means, which may interpolate the rotational position of the transfer drum based on the initial value of the transfer drum and the known rotational speed profile.

In a further development, the control device may also be provided for evaluating the correction values for the cylinder sectors, in particular iteratively, on the basis of the detection of the first optical registration sensor and/or the second optical registration sensor and/or the third optical registration sensor. The evaluation may be performed continuously for a predetermined or predefinable time interval and/or initiated by an operator. In this way, correction values for the individual cylinder sectors can be improved continuously or more precisely on the one hand, and on the other hand, for example, changes caused by wear of the transport cylinder and/or of the suspension of the transport cylinder can be taken into account. However, in contrast to the actual feedback of the detected placement errors or errors of the device elements to the controller by means of a PID controller, the evaluation of the correction values only takes a small part of the computing power which is originally required. In addition, the correction values, once determined, may be readily stored or prepared for subsequent manufacturing runs of the manufacturing system, so that the manufacturing system does not require a restart or start-up (PID) adjustment.

Alternatively, the correction value of the respective cylinder sector or at least a first approximation of the respective correction value of the cylinder sector can also be determined on the basis of a function having periodic, in particular trigonometric, function elements. If the transfer drum is divided into several drum sectors, the function determining the correction value can be discretized. In other words, several discrete correction values or first approximations of correction values can be determined by means of a periodic function. If the transfer cylinder is divided into infinitely small cylinder sectors, a correction value curve, in particular periodic, can also be determined by means of a function.

Optionally, the control device may be further arranged to control and/or adjust the conveyor device and/or the conveyor roller and the placement device based on correction values for the roller sector with the smallest spatial distance from the placement point and based on the detection of the first optical registration sensor and/or the second optical registration sensor and/or the third optical registration sensor. In other words, in addition to the correction values of the cylinder sectors, the direct detection results of the first and/or second and/or third optical recording sensors can additionally be taken into account when controlling and/or adjusting the drive device and/or the drive cylinder. An advantage here is that, for example, detected, disposable or sporadic placement errors of the individual device elements on the conveyor, in particular placement errors which are independent of rotational asymmetry and/or production errors of the conveyor drum, can be compensated for by the already implemented control device.

An advantage here is that no additional adjustment structures, apart from the control device described here, are necessary in order to compensate for errors in the position of the components and/or the device elements determined by the optical detection sensor. Furthermore, the transfer device and/or the transfer drum and/or the placement device may be controlled or adjusted by taking into account the current detection results of the first optical detection sensor and/or the second optical detection sensor and/or the third optical detection sensor, and/or the correction of the determined placement errors may be further improved.

In a variant of the manufacturing system, the placement device may have a carrier receptacle for a component carrier, for example a wafer foil or a glass substrate. The component carrier may be constructed and arranged to provide a number of electronic components for placement on the equipment element conveyed by the conveyor.

Furthermore, the placement device may have a UV light source and/or a laser light source and/or a mechanical detachment device for detaching the electronic component from the component carrier. Alternatively, the component may be attached to the component carrier with a hot melt or temperature dependent adhesive. Here, the attachment of the component to the carrier may be reduced or eliminated by heating the adhesive with a laser, thereby releasing the component from the component carrier for positioning on one of the device elements. Alternatively or additionally, the detachment of the components from the component carrier may also be supported or effected by a mechanical detachment device which exerts a mechanical force on each component so as to detach it from the component carrier.

Furthermore, the control means may be arranged for controlling the displaceable and/or oscillatory movement of the laser light source and/or the mechanical decoupling device and/or the carrier receiver. Alternatively, the control device can evaluate or take into account the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor for this purpose. In other words, the control means may be arranged for controlling and/or adjusting the displaceable and/or oscillatory movement of the laser light source and/or the mechanical decoupling device and/or the carrier receiver based on the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor.

A manufacturing method for an electronic device, comprising at least the steps of:

-transporting an equipment element for an electronic equipment with a transporting means, wherein a transporting movement of the transporting means is caused at least in part by a rotation of a transporting roller having a plurality of roller sectors;

-arranging at least one electronic component with a placement device at a placement point on an equipment element transported by a transport device, wherein

A control device that prepares a correction value for each of a plurality of roller sectors, and controls movement of the conveying roller and the placement device based on the correction value for the roller sector having the smallest spatial distance from the placement point.

Drawings

Further features, characteristics, advantages and possible variants will be clear to the skilled person from the following description with reference to the accompanying drawings. Here, the drawings schematically show variants of the manufacturing system, and variants of the described object are not limited to these variants.

Fig. 1 shows schematically and exemplarily a conveyor drum, wherein a part of a conveyor belt is guided via the conveyor drum.

Fig. 2 shows schematically and exemplarily a placement device for electronic components, which is provided for arranging the components at a placement point on an equipment element conveyed by a conveyor belt.

Fig. 3 schematically and exemplarily shows a manufacturing system for electronic components.

Fig. 4a and 4b schematically and exemplarily show a part of the system shown in fig. 1.

Fig. 5 shows schematically and exemplarily the division of the transfer cylinder into cylinder sectors and the allocation of correction values specific to the cylinder sectors.

Detailed Description

Fig. 1 schematically and exemplarily shows a vacuum drum 40 rotatable about an axis of rotation D. The rotatable vacuum drum 40 is in partial contact with a conveyor belt 10 guided on the vacuum drum 40, which is partially fixed to the vacuum drum 40 by means of a negative pressure. For this purpose, the vacuum drum 40 has a plurality of openings (not shown) in the side. In other words, the conveyor belt 10 is at least partially sucked by the vacuum drum 40, such that a rotation of the vacuum drum 40 about the rotation axis D causes an especially slip-free movement of the conveyor belt 10 in the conveying direction F (or against the conveying direction F).

As shown in fig. 2, the conveyor belt 10 is provided for conveying a conductor structure of a device element a, such as an antenna element, a lighting assembly (LED) and/or a printed circuit, of an electronic device. The equipment element a here passes a placement point 42, which in the example shown is located above a rotatable conveyor drum 40, which at least (carries) the drive conveyor belt 10.

As also schematically shown in fig. 2, the placement device 60 is designed and arranged to arrange electronic components B, such as transponder chips for RFID tags or electronic components adapted to emit light, respectively, on the conveyed equipment elements. For this purpose, the placement device 60 shown schematically in fig. 2 comprises a carrier receptacle (not shown in fig. 2 for the sake of clarity) for a component carrier W which provides a plurality of components B for arrangement on the apparatus element a (only one component B representing a plurality of electronic components is shown on the underside of the component carrier W for the sake of clarity). The component carrier W may be, for example, a wafer.

The carrier receiving portion and therewith the component carrier W can be (re) positioned in at least two spatial directions at least substantially perpendicular to the surface normal of the conveyor 10 at the placement point 42 and can be swung about an axis parallel to the rotation axis D of the conveyor drum 40. Thus, the placement of the components B provided by the component carrier W can be effected at the placement points 42, respectively.

In order to disengage the component B from the component carrier W, the illustrated placement device 60 further comprises a mechanical disengaging device 62 which uses mechanical forces to disengage the component B from the component carrier W. In other embodiments (not shown), the placement device 60 may also have a laser light source, which is provided for deactivating the adhesive properties of the temperature-sensitive and/or UV-sensitive pressure-sensitive adhesive by means of which the component B is fixed to the carrier W, in order to release the component B for placement on the device element a.

Fig. 3 schematically and exemplarily shows a part of a manufacturing system 100 for an electronic device. The system 100 shown comprises a conveyor belt 10 arranged for conveying the device elements a in a conveying direction F past the respective processing stations. In the example shown, the conveying means is a conveyor belt and the conveying direction F corresponds at least partially to the spatial direction X. However, this is not necessary in all embodiments of the manufacturing system.

Conveyor 10 conveys device element a through individual processing stations, wherein these processing stations perform or carry out processing steps on or with device element a, respectively. The number, arrangement and form of the individual processing stations may vary depending on the type of electronic device to be manufactured and are not specified. Thus, in fig. 3, only one adhesive applicator 20 is schematically shown, representing a plurality of processing stations, constructed and arranged for applying adhesive to the equipment elements a conveyed by the conveyor belt 10 in the conveying direction F.

As further shown in fig. 3, the first optical detection sensor 30 is arranged and configured to detect the respective position of the conveyed equipment element a or the position error of the respective equipment element a on the conveyor belt 10.

The position data determined with the optical detection sensor 30 may be applied, for example, to control the movement of the placement device 60 and/or the movement of the vacuum drum 40 and/or the movement of the conveyor belt 10, wherein the control may also include other position data and/or detection results of other sensors (not shown), such as electronic position sensors/encoders, respectively.

In addition, the position of the drum is then corrected by the correction value to improve the placement accuracy.

Furthermore, similar to fig. 2, fig. 3 shows a rotatable vacuum drum 40 about an axis of rotation D, which is arranged and constructed for at least fixing a part of the conveyor belt 10 and driving it at least partly (along with it), and a placement device 60. For the sake of clarity, neither the process of arranging the equipment elements a on the conveyor belt 10 nor the component carriers W is shown in fig. 3. It goes without saying, however, that both the conveyor belt 10 and the placement device 60 may be equipped continuously or quasi-cyclically with the equipment elements a or the components B, and that the illustrated manufacturing system 100 may for this purpose comprise equipment element application equipment and component carrier exchangers. Such a device element applying device may for example be a printing device for producing a device element a on the conveyor 10.

The second optical detection sensor 50 is constructed and arranged to detect a position error of the electronic component B on the component carrier W or a position error of each component B provided by the component carrier W with respect to the placement point 42. Further, a sensor 50 shown in fig. 3 is provided for detecting the rotational position of the vacuum drum 40 or the position of the vacuum drum 40 in space. For this purpose, the vacuum drum 40 may have visually perceptible markings on its sides.

Fig. 3 also shows that after the arrangement of the component B on the device element a, the device element a and the component B (a+b) arranged thereon continue to be conveyed in the conveying direction F.

The third optical detection sensor 70 is arranged and provided for detecting the respective position of the equipment element being conveyed on the conveyor belt 10 and the component (a+b) positioned thereon and/or the position of the respective component B relative to the equipment element a. Further, in the illustrated example, a third optical detection sensor 70 is provided for detecting the electronic component B arranged on the device element a and/or a characteristic error on the device element a. If a characteristic error and/or a positioning error of the device element a and/or the component B is determined, the device element a with the component B arranged thereon can be transferred into a reject receptacle (not shown). Alternatively, the device element a and the component B arranged thereon may also be marked with a marking device (not shown).

Fig. 4a and 4b schematically illustrate that the vacuum drum 40 may be divided into several drum sectors S1, S8. Alternatively, in each case one device element a can be assigned to one cylinder sector.

Fig. 4a shows schematically in an enlarged and clearly not to scale, the arrangement or placement of the electronic component B on the device element a takes place at the placement point 42. More precisely, in each case the component B is arranged on the equipment element a positioned at the placement point 42 on the conveyor 10. Fig. 4a, which is explicitly and schematically enlarged and not to scale, is used here to clearly show the placement point 42 and the corresponding shortest distance d between the placement point 42 to the vacuum drum 40. As shown in fig. 1 to 3, the respective shortest distance d may in particular be zero or have a value of 0 mm, so that the vacuum drum 40 is in contact with the conveyor belt 10 directly below the placement point 42. However, this is obviously not necessarily the case in all implementations of manufacturing systems. In some embodiments, placement points 42 may also be located in front of or behind vacuum drum 40 from a perspective along the conveyor path of conveyor 10.

Due to manufacturing errors or slight eccentric rotation of the vacuum drum 40, depending on the rotational position of the vacuum drum 40, a periodically repeated displacement offset or displacement error of the component B on the device element a, which may correspond in particular to the drum sectors S1, … …, S8, respectively, may occur due to the continued rotation of the vacuum tube. The displacement is here caused by a slightly periodically fluctuating conveying speed of the conveyor belt 10, which in the example shown is guided on the vacuum drum 40 without slipping, due to a slightly eccentric rotation of the vacuum drum 40.

As shown in fig. 5, it is thus possible to have a correction value for each roller sector, for example in the spatial direction X or in the conveying direction F of the conveyor belt 10.

In certain variations, the calculation or correspondence of correction values for the respective drum sectors may for example comprise an evaluation of the detection results of the optical detection sensors 30, 50, 70 and/or of the electronic position sensors/encoders (not shown) by the control device or by a separate computing apparatus. The correction values may be "millimeter offset (millimeter) to be compensated," conveyor speed (m/s) to be achieved, "conveyor acceleration (m/s) ² ) "," angular velocity of vacuum drum to be reached (rad/s) "and/or" angular acceleration of vacuum drum (rad/s) ² ) "and/or combinations of the above. Since the conveyor belt 10 can be guided on the vacuum drum without slipping, the nominal values can be at least partially redundant to one another or can be converted from one another, so that in a variant of the device it is sufficient to provide only a single value as correction value for the respective drum sector.

The control device (not shown) can store correction values for the respective roller sector and, based on the respective correction value for the roller sector at the smallest distance d from the placement point 42, cause the vacuum roller 40 and/or the conveyor belt 10 and/or the placement device 60 to be repositioned to compensate for the placement errors or placement offsets occurring in each case. To this end, the vacuum drum 40 and/or the conveyor belt 10 and/or the placement device 60 may each have one or more electromechanical drive actuators for repositioning. Furthermore, the individual components of the placement device 60, for example the carrier receiver and/or the disengaging device 62 for the component carrier W, can also each have one or more electromechanical drive actuators for repositioning, which are controlled by the control device.

Alternatively, in order to compensate for the placement error or the placement offset in the spatial direction X or the conveying direction F of the conveyor belt 10, the rotational speed of the vacuum drum 40 or the conveying speed of the conveyor belt 10 guided without sliding on the vacuum drum 40, i.e. the deceleration or acceleration, may also be adjusted to compensate for the placement error or the placement offset in the spatial direction X or the conveying direction F of the conveyor belt 10.

In other words, it can be stated that if only a placement error or a placement offset in the spatial direction X or the conveying direction F is to be compensated or eliminated as shown in fig. 5, the control device can be used instead of or in addition to repositioning the conveyor belt 10 and/or the vacuum drum 40 and/or the placement device 60, and the rotational speed of the vacuum drum 40 and/or the conveying speed of the conveyor belt 10 can also be changed or adjusted such that a corresponding offset or placement error of the components in the conveying direction F or the spatial direction X is compensated.

The control device can determine which cylinder sector of the rotating vacuum cylinder 40 has the smallest distance d from the placement point 42, for example by means of the second optical detection sensor 50 and/or by means of a separate distance sensor (not shown). The control means may also calculate the cylinder sector with the smallest distance d from the placement point 42 by the control means using the known actual position of the vacuum cylinder 40 and the known rotational speed of the vacuum cylinder.

The division of the vacuum drum 40 into drum sectors S1, the.i., S8 may be physically achieved, for example, by physically shaping portions of the vacuum drum or the outer surface of the vacuum drum into different sectors. Alternatively or additionally, the control device may also logically or virtually or conceptually divide the vacuum drum into different drum sectors, without in this case requiring the individual drum sectors to be physically separated from one another.

The above-described variants of the system and structural aspects thereof are only for a better understanding of the structure, mode of operation and characteristics; they are not intended to limit the disclosure to these embodiments. The figures are schematic in which some basic characteristics and effects are shown greatly exaggerated in order to clarify the function, principle of action, technical design and characteristics. Any operating mode, any principle, any technical design and any feature disclosed in the drawings or the text may be freely and arbitrarily combined with any feature in all claims, the text and other figures, other operating modes, principles, technical designs and features contained in or derived from the present disclosure, whereby all possible combinations may be assigned to the described method. Also included herein are combinations of all individual statements herein, i.e., combinations between all individual statements in the claims and throughout each of the parts of the specification, as well as combinations between different variants in the text, in the claims and in the drawings. The claims also do not limit the present disclosure so that all combinations between the listed features are possible. All disclosed features are also expressly disclosed herein both individually and in combination with all other features.

Claims

1. A manufacturing system (100) for an electronic device, comprising

A transfer device (10) arranged for transferring a device element (a) of the electronic device;

a transfer drum (40) having a plurality of drum sectors, which is provided for at least partially causing a transfer movement of the transfer device by means of rotation about a rotation axis (D);

-placement means (60) provided for providing at least one electronic component (B) and arranging it at a placement point (42) on the equipment element (a) conveyed by the conveying means (10); and

control means for preparing a correction value for each of the plurality of roller sectors and arranged for controlling the movement of the transfer roller (40) and the placement means (60) based on the correction value of the roller sector having the smallest spatial distance (d) from the placement point (42).

2. The manufacturing system of claim 1, wherein

The control means controlling the movement of the transfer drum (40) and/or the placement means (60) comprises controlling the rotational speed of the transfer drum (40), and/or

The movement of the transfer drum (40) and/or the placement device (60) controlled by the control device comprises a movement and/or a swinging of the transfer drum (40) and/or the placement device (60).

3. The manufacturing system (100) according to claim 1 or 2, wherein

The transfer cylinder (40) is configured as a vacuum cylinder, and/or

The conveyor device (10) is designed as a conveyor belt, and/or

The transfer cylinder (40) can be displaced and/or can be moved in a pivotable manner by means of an electromechanical drive, and/or

The conveyor device (10) can be displaced and/or can be moved in a pivotable manner by means of an electromechanical drive, and/or

The placement device (60) is displaceable and/or swingably movable using an electromechanical drive.

4. The manufacturing system (100) of claim 1, wherein

The control device is provided for controlling the transport cylinder (40) and the placement device (60) on the basis of a preliminary correction value for a cylinder sector having the smallest spatial distance (d) from the placement point (42) and on the basis of a preliminary correction value for a cylinder sector adjoining the cylinder sector having the smallest spatial distance (d) from the placement point (42) against the direction of rotation.

5. The manufacturing system (100) of claim 1, further comprising

At least one first optical detection sensor (30) arranged and configured for detecting the position of the device element (a) of the electronic device on the conveyor (10), and/or

At least one second optical detection sensor (50) arranged and configured for detecting the position of the electronic component (B) provided by the placement device (60), and/or

At least one third optical detection sensor (70) arranged and configured for detecting characteristic errors and/or positioning errors of the device element (a) arranged on the electronic component (B).

6. The manufacturing system (100) of claim 5, wherein

The control device is further configured to store the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor, and/or

The control device is further configured to determine a correction value for the drum sector based on the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor, and/or

The control device is further configured to evaluate the correction value of the drum sector on the basis of the detection of the first optical registration sensor and/or the second optical registration sensor and/or the third optical registration sensor.

7. The manufacturing system (100) of claim 5, wherein

The control device is further configured to control and/or adjust the transport cylinder (40) and the placement device (60) based on the correction value of the cylinder sector with the smallest spatial distance (d) from the placement point (42) and based on the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor.

8. The manufacturing system (100) of claim 1, wherein

The placement device (60) has a carrier receiver for the component carrier (W), and/or

The placement device (60) has a laser light source and/or a mechanical detachment device, and/or

The laser light source and/or the mechanical decoupling device and/or the carrier receiver can be displaceable and/or swingably movable with an electromechanical drive, and/or

The control means are arranged for controlling a displaceable and/or swingable movement of the laser light source and/or the mechanical detachment device and/or the carrier receiver.

9. A manufacturing method for an electronic device, comprising the steps of:

-transporting an equipment element (a) for an electronic equipment with a transporting means (10), wherein a transporting movement of the transporting means (10) is caused at least in part by a rotation of a transporting roller (40) having a plurality of roller sectors;

-arranging at least one electronic component (B) with a placement device (60) on an equipment element (a) conveyed by the conveying device (10) at a placement point (42), wherein

A control device for preparing a correction value for each of the plurality of roller sectors, controlling the movement of the transfer roller (40) and the placement device (60) based on the correction value of the roller sector with the smallest spatial distance (d) from the placement point (42).