CN113955405A

CN113955405A - Manufacturing system for electronic device, and manufacturing method for electronic device

Info

Publication number: CN113955405A
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: 2022-01-21
Anticipated expiration: 2041-07-16
Also published as: CN113955405B; DE102020004376A1; DE102020004376B4

Abstract

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

Apparatuses for manufacturing RFID tags are known in which electronic components are conveyed on a conveying path or conveyor, wherein apparatus elements, such as RFID antennas or fabric layers, which are conveyed on respective further conveying paths, are arranged on the conveyed electronic components, in particular glued thereto. For example, document WO2018/011396a1 discloses such a device.

It is also known to drive a conveying track or belt for an electronic device or for a component of an electronic device by means of a rotatable conveying drum. One advantage here is that the transport rail or the transport belt can be received without sliding by means of the transport drum, which can be designed as a vacuum drum, for example, and is set in motion by means of the rotation of the vacuum drum.

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

In certain application areas, such as in the manufacture of electronic devices, such undesirable placement offsets of a few microns have required correction and/or affected the quality of the manufactured products.

To overcome this problem, attempts have hitherto been made to improve the manufacturing accuracy of manufacturing systems for electronic devices, in particular of (vacuum) transfer drums, in order to reduce placement deviations of device components due to asymmetries or manufacturing errors. The disadvantage here is that this further adds considerably to the additional costs of production manufacture of devices for applications in the manufacture of electronic devices for which the device elements have been manufactured very precisely, and that the desired accuracy without any measurable manufacturing tolerances has hitherto not been possible at least in practice.

It is also known to carry out a rotational speed adjustment and/or a position adjustment of the (vacuum) transport drum during the placement process or to equip the (vacuum) transport drum with a rotational speed adjustment and/or a position adjustment. However, a disadvantage here is that the production of electronic devices, for example for RFID tags, is usually designed with a high transport throughput or high number of mass-production runs, and therefore the rotational speed of the (vacuum) transport drum used for this purpose is very high. Active real-time adjustment of the rotating drum at high speed requires on the one hand a very high computing power alone for the adjustment process, for position sensors arranged to detect and output the current position of the rotating drum at high speed, almost in real time, precisely to microns, and for repositioning the moving actuators of the rotating transfer drum or drum suspension continuously and precisely to microns. Furthermore, since not all physical variables required for adjusting the cylinder rotating at high speed (for example the torque of the rotating cylinder or the current rotational acceleration of the cylinder) can be measured directly with the sensor, a virtual estimator for the required adjusting variables has to be formed by the control device, which on the one hand further increases the computational expenditure of the adjusting circuit to be formed and on the other hand at least fundamentally reduces the adjusting accuracy.

Another possibility for reducing undesired placement deviations on the conveyor track or belt guided on the (vacuum) conveyor drum is to arrange the device components to be conveyed or the devices to be conveyed, respectively, on the conveyor track or belt at a distance from one another such that only a single device component or a single device is conveyed past the placement point per revolution of the (vacuum) conveyor drum. In such a case, placement offsets caused by asymmetries or manufacturing errors in the (vacuum) transfer drums can be substantially compensated by constant placement offsets. It is very disadvantageous here that the production speed of the entire production 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 transport rail or belt guided over a (vacuum) transport drum constitutes a bottleneck of the entire production process, while only a small part of the transport capacity of the transport rail or belt is used. The use of (vacuum) transport rollers has the advantage that the effective operation of the transport rail or belt, in the case of such use of rollers, does not function and even becomes disadvantageous in relation to other known drive devices for transport rails or belts, so that in operational practice the arrangement of only one device element per rotation of a roller on a transport rail or belt is very inefficient and therefore meaningless.

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 that overcome the above-mentioned disadvantages.

Disclosure of Invention

To solve the technical problem, a manufacturing system and a corresponding manufacturing method according to claim 1 are proposed.

A manufacturing system for electronic devices comprises at least one transport device which is provided for transporting device elements of an electronic device, and a transport drum having a plurality of drum sectors which is provided for causing a transport movement of the transport device at least partially by means of a rotation about an axis of rotation.

In this case, the transport rollers may be configured as vacuum rollers, the transport means being configured to at least partially contact at the sides of the vacuum rollers. The vacuum drum can in this case hold the conveyor belt at least partially, in particular without slipping, by means of a vacuum or by means of a relative underpressure, so that a rotation of the vacuum drum causes a corresponding displacement of the conveyor belt which is at least partially guided on the vacuum drum. The rotation of the transport drum or the vacuum drum can be generated by means of an electromechanical rotary drive which is regulated or controlled.

A placement device is 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 device.

The placement points here mean points or positions in space at which the components respectively placed by the placement devices come into physical contact with the equipment elements conveyed by the conveying device. A placement point is here a point or position in space, which also exists independently of the actually ongoing placement process. In other words, a placement point is a point and location in space where 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 location in space for each component to be placed by the placement device or to be arranged respectively on an equipment element conveyed by the conveying device. In other words, a placement point is a predetermined point or location in space that is defined or definable independently of the actual operation of the manufacturing system. Alternatively, the placement point can also be described as a predetermined or predeterminable one-dimensional point or a predetermined or predeterminable two-dimensional surface in space, the extent of which is limited, in particular a two-dimensional surface on the surface of the conveyor and/or of the apparatus element of the conveyor.

The arrangement of the electronic components on the equipment elements may take place, for example, by dropping, ejecting, placing and/or transferring the respective electronic components by means of a placement device. In one variant, the placement device can at least partially and/or temporarily, in particular at the placement point, contact or touch the conveying device and/or the respectively conveyed apparatus element. However, this is not necessary in all embodiments.

Control means are provided for preparing a predetermined correction value for each of the plurality of cylinder sectors, for controlling and/or regulating the (rotational) movement of the transport cylinder and the depositing means on the basis of the correction value for the cylinder sector whose spatial distance to the depositing point at the time is smallest.

Here, a drum sector denotes a particularly imaginary spatial sector of the transport drum having a bottom or end face which is at least approximately in the shape of a circular sector. If the transfer drum is at least substantially cylindrical, the drum sectors are cylinder sectors. A drum sector is a tub sector if the transfer drum is arched at least substantially tub-shaped towards or away from the central longitudinal or rotational axis.

The distance of a cylinder sector from a deposit point means here the shortest spatial distance of the surface of the cylinder sector, which comprises at least a part of the surface of the conveying cylinder, from a predetermined or predeterminable deposit point. In other words, the spatial distance of a drum sector from a placement point can be described as the length of the shortest possible path between the point on the surface of the drum sector and the placement point.

In the embodiment in which the conveying cylinder at the deposit point partially and/or temporarily contacts or touches the conveying device, the cylinder sector which touches the conveying device at least at the deposit point is the cylinder sector which has the smallest spatial distance to the conveying point. In other words, the minimum spatial distance of the drum sector from the deposition point may also be definitely zero or have a value of substantially "0 mm".

If both cylinder sectors are at the same distance from the depositing point and the distance is the smallest distance from the depositing point, the control device can control and/or adjust the depositing device and/or the transport cylinder on the basis of the correction values of the two cylinder sectors which are at the same distance from the depositing point. Alternatively, in such a case, the control device may also effect the control of the depositing device and/or the transport drum solely on the basis of the correction values of the drum sectors moved or to be moved in the direction of rotation of the transport drum towards the transport point. In other words, if the distance of the two cylinder sectors from the transfer point is exceptionally the same and/or is determined or assumed by the control, the control is carried out on the basis of the correction values of the two cylinder sectors or on the basis of the correction value of one of the cylinders.

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

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

On the one hand, therefore, the complex dynamic adjustment of the position of the depositing device and/or of the position or rotational speed of the transport drum by means of feedback and/or virtually equipped estimators of physical parameters of the drum which cannot be detected directly can be dispensed with. 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 a correction value ("offset") is determined and/or assigned for each roller sector, so that generally periodically repeating placement offsets, which are produced by manufacturing errors and/or slight eccentric rotations of the conveyor rollers and the resulting fluctuations in the conveyor belt conveying speed, can be compensated for in each case.

In a variant of the production system, the drum sectors can be designed or divided according to 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 drum sector with a correction value. It can be stated in other words that each drum sector can have exactly one correction value which respectively corresponds to a desired placement offset for the device elements of the electronic device transported by the transport device. One advantage here is that the offset or correction value accuracy of each individual apparatus element conveyed by the conveyor can be maximized, wherein the conveyor conveying capacity is not limited by the asymmetry or manufacturing errors of the conveying rollers driving the conveyor.

In a further variant, the drum sectors can be designed or divided in such a way that a plurality of device elements conveyed by the conveyor each have a common correction or offset value. It can be stated in other words that each drum sector can have exactly one correction value which respectively corresponds to the desired placement offset of a plurality of apparatus elements conveyed by the conveyor. One advantage here is that the implementation expenditure of the production system and the number of control interventions and/or movement commands required for the transport device and/or the transport drum can be reduced, wherein each apparatus element transported by the transport device can respectively correspond to at least one acceptable correction or offset value.

Optionally, the control and/or adjustment of the movement of the transfer drum and/or the placement device by the control device may comprise a control and/or adjustment of the rotational speed of the transfer drum. In other words, the control and/or regulation of the transport drum may comprise at least a temporary acceleration and/or braking of the transport speed of the transport device and/or the rotational speed of the transport drum. Here, the rotational speed of the transport rollers may determine the transport speed of the transport 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 drum.

One advantage here is that at least one placement offset ("offset in the F direction; offset in the X direction") of the equipment component relative to the conveying direction of the conveying device can be corrected by changing the conveying speed of the conveying device and/or the rotational speed of the conveying rollers, wherein for this purpose the conveying device and/or the conveying rollers themselves do not need to be moved. In particular in the high-volume production of electronic devices with high throughput of components and device elements, it is advantageous if the production system is not equipped with freely movable or positionable conveying means, conveying rollers and/or placement devices, while at the same time having high precision requirements for the production of individual electronic devices. In order to correct/compensate for at least one placement offset of the apparatus element in the component conveying direction, the conveying speed of the conveying device and/or the rotational speed of the conveying drum can be influenced/controlled/adjusted by the controller. Another advantage of such (rotational) speed control is that it can be achieved more accurately with less energy than a (continuous) repositioning of the entire system assembly, 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 oscillation of the transfer drum and/or the depositing device. In other words, the control may cause repositioning of the conveyor and/or the conveyor rollers and/or the placement device or components of the placement device to compensate for the placement offset. An advantage of the (continuous) repositioning of the conveying means and/or the conveying rollers and/or the depositing means to compensate for the respective deposition offset of the individual roller sectors is that deposition errors of components on the equipment element can be counteracted in each of the three spatial directions.

For moving or (re) positioning the transport device and/or the transport drum and/or the depositing device, the production system can have an actuator, in particular an electromechanically driven actuator, which is provided for moving the transport device and/or the transport drum and/or the depositing device in one, two or three spatial directions. In particular, the transport rollers and/or the transport device can be displaceable and/or pivotable moved or (re) positioned. In other words, the transport device, the transport rollers and/or the placement device may be displaceable and/or swingably movable with an electromechanical drive.

Alternatively, the control device can be provided for controlling the conveying device and/or the conveying drum and/or the depositing device on the basis of the correction value for the drum sector having the smallest spatial distance to the depositing point and on the basis of the correction value for the drum sector adjoining the drum sector having the smallest spatial distance to the depositing point counter to the direction of rotation. In other words, the control device can take into account the correction values of the cylinder sector currently closest to the transfer point and the cylinder sector expected to be next closest to the transfer point for the purpose of controlling the transfer device and/or the transfer cylinders and/or the depositing device. One advantage here is that the control of the change in movement and/or the control of the change in acceleration of the transfer device and/or the transfer drum and/or the placement device can be smoothed, in particular sharp changes in the acceleration of the direction of movement and/or the transfer speed and/or the rotational speed can be avoided.

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

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

Furthermore, the production system can have at least one first optical detection sensor, which is arranged and configured to detect 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. The optionally present third optical detection sensor is arranged and configured to detect a characteristic error and/or a positioning error of a component arranged on the device element.

In a further development, the control device can also be provided for storing the detections 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 the correction values for the individual drum sectors of the transport drum on the basis of the detections of the first and/or second and/or third optical recording sensors.

In other words, the control device can be provided to determine one or more placement errors or placement deviations of the periodically occurring electronic components on the respective installation components during successive manufacturing runs of the manufacturing system or during a calibration run of the manufacturing system specifically intended for this purpose, using the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor, and, based on this determination, to divide the transport drum (for example conceptually or logically and/or virtually) into a plurality of drum sectors and/or to associate each of the plurality of drum sectors with a correction value ("deviation") which is required or measured to correct the respective determined placement error or placement deviation.

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

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

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

In one variant, the cylinder sectors may also be infinitely small, so that the number of cylinder sectors is infinite, i.e. when the correction values are determined using a functional equation.

In order to determine which roller sector is the smallest distance from the depositing point, the production system can have a position sensor for the transport roller, which is provided to detect the rotational position of the transport roller and/or to transmit it to the control device. The position sensor may determine the position of the transfer drum, for example, using a magnetic sensor or using an additional optical detection sensor. For this purpose, the transport rollers can have optically recognizable markings and/or magnetic elements corresponding thereto.

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

In a further refinement, the control device can also be provided for evaluating, in particular iteratively, the correction values for the drum sectors on the basis of the detections of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor. The evaluation may be performed continuously within a predetermined or predeterminable time interval and/or initiated by an operator. In this way, on the one hand, the correction values for the individual drum sectors can be continuously or more precisely improved, and on the other hand, changes caused by wear of the transport drum and/or the suspension of the transport drum can be taken into account, for example. However, in contrast to the actual feedback of detected placement errors or placement errors of the plant elements to the controller by means of the PID controller, the evaluation of the correction values takes only a small part of the calculation power that would otherwise be required. In addition, the correction values, once determined, can be readily stored or prepared for subsequent manufacturing runs of the manufacturing system, so that the manufacturing system does not need to be restarted or started up for (PID) adjustment.

Alternatively, the correction values of the individual drum sectors or at least a first approximation of the individual correction values of the drum sectors may also be determined on the basis of a function having a periodicity, in particular a trigonometric function element. If the transport cylinder is divided into several cylinder sectors, the function determining the correction value can be discretized. In other words, several discrete correction values or a first approximation of a correction value can be determined by means of a periodic function. If the transport drum is divided into infinitely small drum sectors, a particularly periodic correction value profile can also be determined by means of a function.

Optionally, the control device can also be provided for controlling and/or adjusting the transport device and/or the transport drum and the depositing device on the basis of the correction values for the drum sectors having the smallest spatial distance from the depositing point and on the basis of the detections by the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording 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 also be taken into account when controlling and/or regulating the drive device and/or the drive cylinder. One advantage here is that, for example, detected, one-time or sporadic placement errors of individual equipment elements on the conveying device, in particular placement errors which are not related to rotational asymmetries and/or manufacturing errors of the conveying rollers, can be compensated by the already implemented control device.

One advantage here is that no additional adjustment structure needs to be provided in addition to the control device described here in order to compensate for positional errors of the component and/or the equipment element determined by the optical detection sensor. Furthermore, it is possible to control or adjust the transport device and/or the transport drum and/or the placement device by taking into account the current detection result of the first optical detection sensor and/or the second optical detection sensor and/or the third optical detection sensor and/or to further improve the correction of the determined placement error.

In a variant of the production system, the placement device can have a carrier receptacle for the component carrier, for example a wafer foil or a glass substrate. The component carrier may be constructed and arranged to provide a large number of electronic components for arrangement on a device element transported by the transport device.

Furthermore, the placement device can 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 parts may be attached to the parts carrier with a hot melt or temperature dependent adhesive. Here, the component can be released from the component carrier for positioning on one of the device elements by weakening or eliminating the adhesion of the component on the carrier by heating the adhesive with a laser. Alternatively or additionally, the detachment of the components from the component carrier may also be supported or achieved by a mechanical detachment device which exerts a mechanical force on each component in order to detach it from the component carrier.

Furthermore, the control device may be provided for controlling the displaceable and/or oscillatory movement of the laser light source and/or the mechanical detachment device and/or the carrier receiver. Optionally, the control device can also 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 detachment 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:

-conveying a device element for an electronic apparatus with a conveyor, wherein a conveying movement of the conveyor is caused at least in part by a rotation of a conveying drum having a plurality of drum sectors;

-arranging at least one electronic component on the equipment element conveyed by the conveying device at a placement point with a placement device, wherein

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

Drawings

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

Fig. 1 shows schematically and exemplarily a transfer drum, wherein a portion of the conveyor belt is guided via the transfer 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 a machine element conveyed by a conveyor belt.

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

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

Fig. 5 shows schematically and exemplarily the division of the transport drum into drum sectors and the assignment of drum sector-specific correction values.

Detailed Description

Fig. 1 shows schematically and exemplarily a vacuum drum 40 which can be rotated about a rotation axis D. The rotatable vacuum drum 40 is in partial contact with the conveyor belt 10 guided over the vacuum drum 40, which conveyor belt is partially fixed on the vacuum drum 40 by means of underpressure. 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 up by the vacuum drum 40, so that a rotation of the vacuum drum 40 about the axis of rotation D causes a particularly slip-free movement of the conveyor belt 10 in (or against) the conveying direction F.

As shown in fig. 2, the conveyor belt 10 is provided for conveying conductor structures of equipment components a of the electronic device, such as antenna elements, lighting assemblies (LEDs) and/or printed circuits. The apparatus component a passes here through a depositing point 42, which in the example shown is located above a rotatable transport drum 40, which at least (carries) the drive conveyor belt 10.

As is also schematically shown in fig. 2, the placement device 60 is designed and arranged to arrange electronic components B, for example transponder chips for RFID tags or electronic components suitable for emitting light, respectively on the transported equipment elements. To this end, the placement device 60 schematically shown 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 equipment element a (for the sake of clarity, only one component B represents a plurality of electronic components shown on the underside of the component carrier W). The component carrier W may be, for example, a wafer.

The carrier receptacle and the component carrier W together therewith can be (re) positioned in at least two spatial directions at least substantially perpendicular to the surface normal of the transport device 10 at the placement point 42 and can be pivoted about an axis parallel to the rotational axis D of the transport cylinder 40. Therefore, the placement of the components B provided by the component carriers W can be achieved at the placement points 42, respectively.

In order to detach the component B from the component carrier W, the shown placement device 60 further comprises a mechanical detachment apparatus 62, which uses mechanical force to detach the component B from the component carrier W. In a further embodiment (not shown), the placement device 60 can also have a laser light source which is provided to deactivate the adhesive properties of the temperature-sensitive and/or UV-sensitive pressure-sensitive adhesive by means of which the component B is fixed on the carrier W, in order to release the component B for arrangement on the apparatus element a.

Fig. 3 schematically and exemplarily illustrates a portion of a manufacturing system 100 for an electronic device. The system 100 shown comprises a conveyor belt 10 arranged to convey the device components a in a conveying direction F through the various 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 production system.

The conveyor 10 transports the component a past the individual processing stations, wherein the processing stations respectively carry out or carry out processing steps on or with the component a. The number, arrangement and form of the individual processing stations may vary depending on the type of electronic device to be manufactured and is not specified. Thus, in fig. 3, only one adhesive applicator 20 is schematically shown, representing a plurality of processing stations, which is constructed and arranged for applying adhesive to the equipment component 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 for detecting a respective position of the equipment component a conveyed on the conveyor belt 10 or a position error of the respective equipment component a.

The position data determined with the optical detection sensor 30 can 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 can also comprise further sensors (not shown), for example further position data and/or detection results of electronic position sensors/encoders, respectively.

Further, 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 a rotational axis D, which is arranged and configured for fixing at least a part of the conveyor belt 10 and at least partially (concomitantly) driving it, and a placement device 60. For the sake of clarity, neither the arrangement of the device elements a on the conveyor belt 10 nor the component carrier W is shown in fig. 3. It goes without saying, however, that both the conveyor belt 10 and the placement device 60 can be continuously or quasi-cyclically equipped with equipment elements a or components B, and that the illustrated manufacturing system 100 can comprise equipment element application equipment and component carrier exchangers for this purpose. Such a device element application device may be, for example, 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 the position of the electronic components B on the component carrier W or position errors of the individual components B provided by the component carrier W relative to the placement points 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. To this end, the vacuum drum 40 may have visually perceptible markings on its sides.

Fig. 3 also shows that after component B is arranged on equipment component a, equipment component a and component B (a + B) arranged thereon continue to be conveyed in conveying direction F.

The third optical detection sensor 70 is arranged and provided for detecting the respective position of the apparatus element conveyed on the conveyor belt 10 with the component (a + B) positioned thereon and/or the position of the respective component B relative to the apparatus element a. Furthermore, in the example shown, a third optical detection sensor 70 is provided for detecting characteristic errors on the electronic components B arranged on the device element a and/or on the device element a. If characteristic errors and/or positioning errors of the equipment element a and/or the component B are determined, the equipment element a with the component B arranged thereon can be conveyed into a reject receptacle (not shown). Alternatively, the device element a with the component B arranged thereon can 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. Alternatively, one machine element a can be assigned to each drum sector.

Fig. 4a shows schematically in an enlarged manner and in a clear manner not to scale, the arrangement or placement of the electronic component B on the device element a taking place at the placement point 42. More precisely, the component B is arranged in each case on an equipment element a positioned at a placement point 42 on the conveyor 10. Fig. 4a, which is explicitly schematically enlarged here and not to scale, serves here for the purpose of clearly showing the placement point 42 and the respective shortest distance d between the placement point 42 and 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 a manufacturing system. In some embodiments, the placement point 42 may also be located in front of or behind the vacuum drum 40, as viewed from a perspective along the conveying path of the conveyor belt 10.

Due to manufacturing tolerances or slight eccentric rotation of the vacuum drum 40, depending on the rotational position of the vacuum drum 40, the component B on the apparatus element a can experience a periodically repeated placement offset or placement error due to the continuous rotation of the vacuum tube, which can specifically correspond to the drum sectors S1, S. The displacement is caused by a slightly periodically fluctuating conveying speed of the conveyor belt 10, which is guided on the vacuum drum 40 without sliding in the example shown, as a result of a slight eccentric rotation of the vacuum drum 40.

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

In some variants, the calculation or correspondence of the correction values of 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 means or by a separate computing device. The correction value may be "millimeter offset to compensate (millimeter)", "conveyor speed to reach (m/s)", "conveyor acceleration (m/s)", or²) "," angular velocity of the vacuum drum to be achieved (rad/s) "and/or" angular acceleration of the vacuum drum (rad/s)²) "and/or combinations thereof. Since the conveyor belt 10 can be guided on the vacuum drum without slipping, the nominal values can be at least partially redundant with one another or can be switched over to one another, so that in a variant of the apparatus it is sufficient to provide only a single value as a correction value for the respective drum sector.

The control means (not shown) can store the correction values for the respective cylinder sectors and, on the basis of the respective correction values for the cylinder sector having the smallest distance d from the depositing point 42, cause the vacuum cylinder 40 and/or the conveyor belt 10 and/or the depositing means 60 to be repositioned to compensate for the deposition error or the deposition offset which occurs in each case. To this end, the vacuum drum 40 and/or the conveyor belt 10 and/or the depositing device 60 may each have one or more electromechanically driven actuators for repositioning. Furthermore, the individual components of the placement device 60, for example the carrier receptacle and/or the detachment apparatus 62 for the component carrier W, can also each have one or more electromechanically driven actuators for repositioning, which are controlled by the control device.

Alternatively, in order to compensate for placement errors or placement deviations in the spatial direction X or in the conveying direction F of the conveyor belt 10, it is also possible to adjust the rotational speed of the vacuum drum 40 or the conveying speed of the conveyor belt 10 guided without slipping on the vacuum drum 40, i.e. to decelerate or accelerate, in order to compensate for placement errors or placement deviations in the spatial direction X or in the conveying direction F of the conveyor belt 10.

In other words, it can be stated that if, as shown in fig. 5, only placement errors or placement deviations in the spatial direction X or the conveying direction F need to be compensated or eliminated, 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, it being possible for the rotational speed of the vacuum drum 40 and/or the conveying speed of the conveyor belt 10 to be varied or adjusted so that corresponding deviations or placement errors of the components in the conveying direction F or the spatial direction X are compensated.

It can be determined by the control means, for example, with the second optical detection sensor 50 and/or by means of a separate distance sensor (not shown), which drum sector of the rotating vacuum drum 40 has the smallest distance d to the deposit point 42. The control means can also calculate, by means of the control means, the cylinder sector with the smallest distance d from the placement point 42 using the known real 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,......, S8 may be achieved physically, 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 can also logically or virtually or conceptually divide the vacuum drum into different drum sectors, without the individual drum sectors needing to be physically separated from one another in such a case.

The above-described variations of the system and its structural aspects are merely intended for a better understanding of structure, mode of operation, and characteristics; they do not limit the disclosure to these embodiments. The drawings are schematic, in which some basic features and effects are shown greatly exaggerated, in order to clarify functions, principles of action, technical design and features. Any mode of operation, any principle, any technical design and any feature disclosed in the drawings or in the text may be freely and arbitrarily combined with any feature in all claims, text and other figures, other modes of operation, principles, technical designs and features contained in or derived from the disclosure, whereby all possible combinations may be assigned to the described method. Also included herein are combinations between all of the individual statements in the text, i.e., in each part of the specification, in the claims, and different variations in the text, in the claims, and in the drawings. The claims are also not intended to limit the disclosure to the combinations possible between all the listed features. 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 conveying device (10) provided for conveying an equipment element (A) of an electronic apparatus;

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 a rotation about a rotation axis (D);

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

a control device which prepares a correction value for each of the plurality of cylinder sectors and is provided for controlling the movement of the conveying cylinder (40) and the depositing device (60) on the basis of the correction value for the cylinder sector having the smallest spatial distance (d) from the depositing point (42).

2. Manufacturing system according to the preceding claim, 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 depositing means (60) controlled by the control means comprises a movement and/or an oscillation of the transfer drum (40) and/or the depositing means (60).

3. Manufacturing system (100) according to one of the preceding claims, wherein

The transfer roller (40) is designed as a vacuum roller, and/or

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

The transfer roller (40) can be displaced and/or pivoted by means of an electromechanical drive, and/or

The conveying device (10) can be displaced and/or pivoted by means of an electromechanical drive, and/or

The placement device (60) can be displaced and/or swivelably moved by means of an electromechanical drive.

4. Manufacturing system (100) according to one of the preceding claims, wherein

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

5. Manufacturing system (100) according to one of the preceding claims, further comprising

At least one first optical detection sensor (30) which is arranged and designed to detect the position of the device element (A) for the electronic device on the transport device (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) which is arranged and designed to detect a characteristic error and/or a positioning error of the device element (A) arranged on the electronic component (B).

6. Manufacturing system (100) according to the preceding claim, wherein

The control device is also 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, and/or

The control device is further provided for determining a correction value for the drum sector on the basis of 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 also provided for evaluating a correction value for the drum sector on the basis of the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor.

7. Manufacturing system (100) according to the preceding claim, wherein

The control device is also provided for controlling and/or regulating the transport drum (40) and the depositing device (60) on the basis of the correction value for the drum sector with the smallest spatial distance (d) from the depositing point (42) and on the basis of the detection of the first optical recording sensor and/or the second optical recording sensor and/or the third optical recording sensor.

8. Manufacturing system (100) according to one of the preceding claims, wherein

The placement device (60) has a carrier receptacle 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 detachment device and/or the carrier receiver can be displaceable and/or pivotably movable by means of an electromechanical drive, and/or

The control device is provided for controlling the displaceable and/or pivotable 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 a device element (a) for an electronic apparatus with a transport device (10), wherein a transport movement of the transport device (10) is caused at least in part by a rotation of a transport drum (40) having a plurality of drum sectors;

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

A control device which prepares a correction value for each of the plurality of cylinder sectors, controls the movement of the transfer cylinder (40) and the depositing device (60) based on the correction value for the cylinder sector having the smallest spatial distance (d) from the depositing point (42).