EP3359302A1 - Procédé et dispositif permettant de masquer des trous de fixation dans des jantes - Google Patents

Procédé et dispositif permettant de masquer des trous de fixation dans des jantes

Info

Publication number
EP3359302A1
EP3359302A1 EP16763012.8A EP16763012A EP3359302A1 EP 3359302 A1 EP3359302 A1 EP 3359302A1 EP 16763012 A EP16763012 A EP 16763012A EP 3359302 A1 EP3359302 A1 EP 3359302A1
Authority
EP
European Patent Office
Prior art keywords
masking
rim
handling device
unmasked
mounting hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16763012.8A
Other languages
German (de)
English (en)
Inventor
Eckhard Riemrich
Roland STECK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eisenmann SE
Original Assignee
Eisenmann SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eisenmann SE filed Critical Eisenmann SE
Publication of EP3359302A1 publication Critical patent/EP3359302A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/20—Masking elements, i.e. elements defining uncoated areas on an object to be coated
    • B05B12/30—Masking elements, i.e. elements defining uncoated areas on an object to be coated specially adapted for vehicle wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies

Definitions

  • the invention relates to a method for masking mounting holes in rims before the rims are painted or otherwise coated.
  • the invention further relates to a device which is suitable for carrying out the method.
  • rims as they are intended in particular for use on vehicles made of metallic materials such as steel or aluminum.
  • Such rims are provided with a coating comprising one or more layers.
  • the coating serves as corrosion protection for the metallic material and often also to improve the aesthetic effect of the vehicle wheels.
  • Wet coating methods and powder coating methods are usually used as the coating method for the vehicle wheels, and these can also be combined with one another.
  • the rim has holes with which the rim can be attached to an end flange of a vehicle axle.
  • a first group of holes is formed by mounting holes such as wheel bolt holes, which have contact surfaces for the heads of the wheel bolts.
  • a rim usually has a central bore, which serves to center the rim with respect to the wheel axle and can receive a cover cap.
  • the mounting holes should, in contrast to the other surface areas of the rim, after performing the coating of the rim at least substantially free of coatings. This ensures in particular that the mating geometry between the wheel bolt and the rim in the region of the contact surface can ensure the necessary frictional engagement during operation. In the case of a coating remaining in the region of the contact surface, this is changed, in particular by Setting operations, the surface pressure between wheel bolt and rim, which could affect the functional safety.
  • the z. B. may be formed as a robot, masking elements such as balls or plugs placed on the mounting holes and thereby closed.
  • the robot is equipped with a multiple gripper as a tool whose gripping units are rigidly arranged according to the mounting hole pattern of the rim.
  • Such a multiple gripper is thus usable only for a rim type. If rims of various types are to be masked on a coating system, then multiple robots adapted to the rim types must be made available to the robot, which entails high system costs. Furthermore, a change of the rim types is only possible after a change of multiple grippers on such coating systems. The required tool change times reduce the throughput of the coating system.
  • the object of the invention is also to provide a device which is suitable for carrying out such a method and is composed of particularly few components.
  • this object is achieved by a method for masking fastening bores of rims which are moved on a transport device of a rim coater, the method comprising the following steps: a) determining the position and number of unmasked fastening bores; b) starting a first unmasked mounting hole of a rim and masking the first unmasked mounting hole with a first masking element by means of a handling device; and c) starting a second unmasked mounting hole of the same rim and masking the second unmasked mounting hole with a second masking element by means of the handling device, wherein steps b) and c) are carried out successively.
  • the invention is based on the recognition that, if each unmasked mounting hole can be approached and masked individually, rims with almost any mounting hole pattern can be masked. As a result, different types of rims can be machined without changing tools on the same coating system. This contributes to a reduction of plant and process costs. Such a method can be adapted much more flexibly to the current needs of the coating system.
  • an image recorded by a camera can be evaluated.
  • a thermal imaging camera or a laser scanning system can be used.
  • position information for example, the pitch diameter and the absolute or relative altitude of the mounting holes are evaluated.
  • a pitch circle is understood to mean a circle concentric with the center of the rim on which the wheel bolt bore centers are arranged.
  • other data such as the diameter of the mounting holes can be detected.
  • step a) it is determined to which rim type a rim supplied by the transport device belongs. Rim information such as rim diameter and, if necessary, the shape and design of rim spokes can be recorded for this purpose.
  • a masking element adapted to the rim type can then be used for masking a fastening bore from a plurality of different masking elements.
  • masking elements in this case, for example, ball or plug can be used.
  • this information or at least a part thereof can also be obtained by reading out an information carrier arranged on the rim with the aid of a data exchange device. Furthermore, this information can be provided by a higher-level system control of the device.
  • the handling device has exactly one gripper, which is designed to receive the masking elements.
  • the handling device receives the first masking element from an element memory before step b). Between step b) and step c), ie, before the second fastening bore is approached, the handling device receives the second masking element from the same element memory or another element memory. Since the handling device has only one gripper, very fast movements can be realized.
  • the gripper is preferably a pneumatically operated Sucker for use, which can be very simple. Alternatively, a mechanical or magnetic gripper can be used.
  • the element memory can be embodied, for example, as a turntable, which is externally populated with the exact number of masking elements required in a specific time window.
  • a turntable which is externally populated with the exact number of masking elements required in a specific time window.
  • an "arbitrarily large" element memory which is designed for example as a so-called Rüttel formater, from which the masking elements are removed.
  • the handling device has two grippers, which are designed to receive the masking elements. Before step b), the handling device receives the first and second masking elements. In any case, if the additional gripper with the masking element received therefrom does not significantly increase the weight to be moved by the handling device, this allows a shortening of the travel paths and thus the process time necessary for masking the mounting holes of a single rim. On the other hand, if the additional weight becomes too large, the travel times can even be longer. Corresponding considerations apply to handling devices with three or more grippers.
  • the masking elements are received by different element memories.
  • the different element storage are arranged, for example, at different locations along the conveying direction, so that there is always an optimal element storage with minimal travel for the handling device for a rim moved past the element storage.
  • the element store may be moved in the direction of the rim before receiving the masking elements.
  • Such active element memory can be used advantageously both when using single grippers and multiple grippers.
  • the handling device comprises at least two differently designed grippers which are designed to grasp differently configured masking elements.
  • the grippers can be arranged for example on the handling device by means of a turret and be rotatable about a turret axis, so that at a certain time only a gripper a mounting hole of the rim masked.
  • At least two independent handling devices mask mounting holes of the same rim with masking elements. Due to this division of labor, the masking of a rim may take place at up to twice the speed, so that the throughput of the device can be doubled accordingly. Because of the continuous movement of the rims on the transport device, this procedure is more favorable than when the handling devices completely mask the rims alternately.
  • a device for masking mounting holes of rims which are moved on a conveyor of a rim coater
  • the device comprising a workpiece detection unit, which is adapted to determine the location and number of unmasked mounting holes.
  • the device further comprises a handling device which is adapted to approach a first unmasked mounting bore of a rim and mask it with a first masking element, and offset in time to approach a second unmasked mounting hole of the same rim and with a second Mask masking element.
  • a workpiece detection unit a camera and / or a data exchange device may be provided as a workpiece detection unit.
  • the device may comprise exactly one gripper, which is designed to receive the masking elements, and have a control which is adapted to control the handling device so that the handling device a) receives the first masking element from an element memory before the first Mounting hole anong and masked, and b) the second masking element from the same or from another element memory receives after the first mounting hole was masked.
  • the handling device has two grippers, which are designed to receive the masking elements, and that the device has a controller that is configured to control the handling device such that the handling device receives the first masking element from an element memory and receives the second masking element of the same or another element storage before it starts the first and the second mounting hole.
  • the apparatus may include a controller configured to control movements of the element storage such that the storage element is moved toward the rim prior to receiving the masking elements.
  • the device is set up to mask rims of different rim types, and that the workpiece recognition unit is set up to determine to which rim type a rim supplied by the transport device belongs.
  • the workpiece recognition unit is set up to determine to which rim type a rim supplied by the transport device belongs.
  • determine the rim type an image of the supplied rim recorded by the camera as a workpiece recognition unit can be evaluated here.
  • data can also be read from an information carrier by means of a data exchange device.
  • the device has a controller which is set up to control the handling device such that a masking element adapted to the rim type is used for masking a fastening bore, depending on the determined rim type of a plurality of different masking elements.
  • the device has a control which is adapted to control movements of the element memory so that the element memory is moved in the direction of the rim before picking up the masking elements depending on the rim type.
  • the handling device comprises at least two grippers of different design, which are designed to grasp differently configured masking elements.
  • the device comprises at least two independent handling devices, and that the device has a controller which is adapted to control the two handling device so that both handling devices mask mounting holes of the same rim with masking elements
  • the above object is achieved with respect to the device by a device for masking mounting holes of rims, which are moved on a conveyor of a rim coater, which includes a workpiece detection unit, which is arranged location and number of unmasked Determine mounting holes.
  • the device further comprises a handling device having at most two grippers, which are adapted to grip masking elements, which are designed to mask the mounting holes.
  • the handling device comprises exactly one gripper, with which this anatoma mounting holes of the rim individually and masked.
  • Figure 1 is a plan view of different types of rims with unmasked mounting holes, which are moved on a transport device of a rim coating plant;
  • Figure 2 is a front view of a device for masking mounting holes of rims according to a first embodiment of the invention
  • Figure 3 is a view in the conveying direction of the device shown in Figure 2;
  • Figure 4 is a view in the conveying direction of a device according to a second embodiment of the invention, which has a handling device with a multi-gripper;
  • FIGS. 5a to 5d show four schematic plan views of a rim, in which different travel paths of the handling device according to the invention are shown;
  • Figure 6 is a schematic plan view of a rim and the travel of an element memory according to the inventive method.
  • a masking device is shown in a vehicle rim system 12, not specifically shown.
  • the rims 12 include various types of rims 12a, 12b and 12c, differing in diameter and each having mounting holes 14 in the form of Radschraubenbohrungen.
  • the fastening bores 14a, 14b and 14c differ in their number, their diameter and their pitch circle.
  • a pitch circle is understood to mean a circle arranged concentrically to the center of the rim on which the wheel bolt boring centers are arranged.
  • the rims 12a, 12b, 12c central hub bores 16a, 16b and 16c, which may differ in diameter depending on the rim type.
  • FIG. 2 shows a front view of a first embodiment of the device 10 according to the invention.
  • the rims 12 are arranged on rotatable spindles 20 of a transport device 18 by means of a mandrel 19 passing through the hub bores 16a, 16b, 16c, as shown in FIG.
  • the masking device 10 comprises a workpiece detection area 22, a masking area 24 and a control area 26.
  • a camera 28 and a data exchange device 30 are arranged in each case.
  • the data exchange device 30 communicates with a not specifically shown information carrier, which is on the rim 12 or on the spindle 20 which receives the rim 12, and stores rim-specific data.
  • the masking area 24 accommodates a handling device in the form of a robot, in particular a delta robot 32, with which particularly high travel speeds can be achieved.
  • the delta robot 32 has a pneumatically operated single gripper 34 with which it can receive a masking element.
  • the single gripper can be operated mechanically or magnetically.
  • FIG. 3 shows a view of the device 10 according to the invention in the conveying direction of the transport device 18.
  • FIG. 4 also shows a delta robot 32 which carries a multiple gripper 34 'with a plurality of gripping units 35-1, 35-2, 35-3. These are arranged in the present embodiment on a turret 38 and thus rotatably mounted about a central turret axis 39. If the turret 38 is rotated, then another gripping unit is used.
  • Masking elements 36 in the form of balls 36a and plugs 36b are provided in each case in an element memory in the form of a removal magazine 40 and can be used by the Single gripper 34 or from the multiple gripper 34 'of the delta robot 32 are received.
  • the balls 36a and the plugs 36b each include various types of ball and plugs not specifically shown, which differ from one another depending on the attachment holes.
  • the rims 12 are fed to the workpiece detection area 28 of the masking device 10 in the rim coating installation by means of the transport device 18.
  • data such as rim diameter, number of mounting holes, diameter of the mounting holes, pitch circle diameter of the mounting holes and location of the mounting holes with respect to the conveying direction determined and passed to a control unit 42 of the device.
  • the data exchange device 30 a data exchange between the control unit 42 of the device 10 and the supplied rim 12.
  • a ball 36a or a plug 36b is to be provided as a masking element 36 for the rim 12. If a clear recognition of the rim 12 can be achieved solely by the camera 28, then the data exchange device 30 can be dispensed with.
  • the rim 12 is then supplied to the masking region 24 without interruption of the conveying movement. While the rim 12 is being conveyed on the conveyor 18, the required masking elements 36 are provided to the picking magazines. In this case, the rim 12 is preferably moved in one degree of freedom, namely in the conveying direction, at a predetermined conveying speed. In this way, the control unit 42 of the device can at any time calculate the position data of the mounting holes 14 to be masked from the data transmitted by the camera 28. If, nevertheless, a rotation of the rim 12 takes place, a dynamic offset is calculated from the movement parameters of the spindle 20 and transmitted to the control unit 42 of the device 10 with which the determined position data are corrected.
  • the delta robot 32 carries an additional camera not shown separately, which is used only for determining the position of a free mounting hole in unwanted rotation of the rim 12.
  • this camera is an additional load for the delta robot 32, which could degrade the dynamic properties. This could be prevented by another stationary camera.
  • the delta robot 32 masks the unmasked mounting holes 14.
  • the delta robot 32 first receives a first masking element 36, for example a ball 36a, from a removal magazine 40. Thereafter, the delta robot 32 drives a first unmasked mounting hole 14 of the supplied rim 12 and masks it with the recorded first masking element 36 by depositing the masking element 36 on the mounting hole 14 so that it covers the mounting hole 14. In this way it is prevented that in a subsequent coating process coating material can penetrate into the mounting hole 14 and can be deposited there.
  • a first masking element 36 for example a ball 36a
  • the delta robot 32 moves on to the same removal magazine 40 and picks up the second masking element 36 from the same removal magazine 40. Then, the delta robot 32 drives the second unmasked mounting hole 14 of the same rim and masks it with the second recorded masking element 36. All other mounting holes 14 of the rim 12 are masked in the same way.
  • FIG. 5b an embodiment of the device 10 is shown schematically, in which around the rim 12 around several different removal magazines 40-1, 40-2, 40-3, 40-4 are arranged.
  • the acceptance magazines 40-1, 40-2, 40-3, 40-4 can hereby be provided with the same or different masking elements as required.
  • the masking of the mounting holes 14 of a rim 12 with the same masking elements 36, such as balls 36a is carried out so that between the start and masking of each Radschraubenbohrung 14, a new masking element 36 is taken from each other pickup magazine of the single gripper 34.
  • the arrangement of the removal magazines 40-1, 40-2, 40-3, 40-4 along the device to the rim type of the rim 12 and the conveying speed of the Transport device 18 adapted that the delta robot 32 total traverses minimal traverses, whereby a high processing speed is achieved.
  • the masking of the mounting holes 14 of a rim 12 can be made, for example, according to the schematic illustration in FIG. 5c for the case of a take-off magazine 40 and according to the schematic Representation in Fig. 5d for the case of several acceptance magazines 40-1, 40-2, 40-3, 40-4 done.
  • the gripping units of one or more take-off magazines 40, 40-1, 40-2, 40-3, 40-4 each receive a masking element 36 until all the required masking elements 36 have been received. Subsequently, the unmasked mounting holes 14 of the rim 12 are approached one after the other and masked each with a masking element 36.
  • the multiple gripper 34 'wearing masking elements 36 As long as the multiple gripper 34 'wearing masking elements 36, the mounting holes 14 are approached and masked without further masking elements 36 are removed therefrom from a removal magazine. In this way, compared with a single gripper 34 of the travel of the delta robot 32 can be reduced.
  • FIG. 6 schematically shows a further embodiment of the device 10, in which an active removal magazine 40 'is moved in the direction of the rim 12 before the masking elements 36 are picked up.
  • a dashed line is a storage position and a solid line
  • a removal position of the removal magazine 40 ' is shown.
  • the removal magazine is arranged above the rim 12, alternatively, a removal position at the same height laterally of the rim 12 may be advantageous.
  • the acceptance position is determined as a function of the determined rim type, wherein, for example, the height or the outer diameter of the rim 12 is taken into account.
  • the device 10 comprises a further delta robot which operates parallel to or in the conveying direction behind the first delta robot 32 in the conveying direction.
  • the two delta robots are controlled so that they mask mounting holes 14 of the same rim 12 with masking elements 36.
  • At the outlet of the device 10 is controlled in the control area 26 by means of the camera 28, whether not masked mounting holes 14 are still present or not.
  • the image processing of the camera 28 in the control area 26 can be made simpler than in the workpiece detection area 22. If a rim 12 is recognized as defective, it is marked by the data exchange device 30, the data set of the rim 12 is modified on the not specifically shown information carrier. Such a rim 12 is subsequently sorted out, and in an additional step, its unmasked attachment bore 14 is masked manually or by another robot.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Manipulator (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)

Abstract

L'invention concerne un procédé permettant de masquer des trous de fixation (14) de jantes (12) qui sont déplacées sur un dispositif de transport (18) d'une installation de revêtement de jantes, le procédé comprenant l'étape consistant à déterminer la position et le nombre de trous de fixation (14) non masqués. Selon l'invention, un premier trou de fixation non masqué (14) d'une jante (12) est atteint et ce premier trou de fixation non masqué (14) est masqué avec un premier élément de masquage (36) au moyen d'un dispositif manipulateur (32). C'est seulement à l'étape suivante qu'un deuxième trou de fixation non masqué (14) de la même jante (12) est atteint et que ce deuxième trou de fixation non masqué (14) est masqué avec un deuxième élément de masquage (36) au moyen du dispositif manipulateur (32).
EP16763012.8A 2015-10-09 2016-09-06 Procédé et dispositif permettant de masquer des trous de fixation dans des jantes Withdrawn EP3359302A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015013117.6A DE102015013117A1 (de) 2015-10-09 2015-10-09 Verfahren und Vorrichtung zum Maskieren von Befestigungsbohrungen in Felgen
PCT/EP2016/070948 WO2017060016A1 (fr) 2015-10-09 2016-09-06 Procédé et dispositif permettant de masquer des trous de fixation dans des jantes

Publications (1)

Publication Number Publication Date
EP3359302A1 true EP3359302A1 (fr) 2018-08-15

Family

ID=56889065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16763012.8A Withdrawn EP3359302A1 (fr) 2015-10-09 2016-09-06 Procédé et dispositif permettant de masquer des trous de fixation dans des jantes

Country Status (5)

Country Link
US (1) US20180304294A1 (fr)
EP (1) EP3359302A1 (fr)
CN (1) CN108025324B (fr)
DE (1) DE102015013117A1 (fr)
WO (1) WO2017060016A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016112797B3 (de) 2016-07-12 2017-12-21 Eisenmann Se Vorrichtung und Verfahren zum Maskieren von Befestigungsbohrungen in Felgen
DE102017116007A1 (de) 2017-07-17 2019-01-17 Eisenmann Se Vorrichtung und Verfahren zum Auftragen einer Beschichtung auf einer Innenfläche einer Bohrung eines Kraftfahrzeugrads
CN107597472A (zh) * 2017-08-31 2018-01-19 中信戴卡股份有限公司 一种用于铝合金车轮喷涂的防护装置
CN108714500B (zh) * 2018-07-31 2023-11-03 中信戴卡股份有限公司 一种车轮螺栓孔防护堵放置装置
CN113499882B (zh) * 2021-06-25 2022-05-31 江苏苏美达铝业有限公司 一种轮毂自动化喷漆装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4527300A (en) * 1983-10-12 1985-07-09 Wayne C. Kunde Apparatus for cleaning the bead seating profile of a tire rim
DE19701194C1 (de) * 1997-01-15 1998-03-12 Stahlschmidt & Maiworm Verfahren und Vorrichtung zum Abdecken von Befestigungslöchern und Wiederfreilegen derselben bei der Herstellung von Rädern für Kraftfahrzeuge
JPH1157557A (ja) * 1997-08-26 1999-03-02 Topy Ind Ltd マスキングプラグのホイールナット座への装着方法および装置
CN101602042B (zh) * 2009-07-10 2011-07-27 广州市金钟汽车零件制造有限公司 一种汽车轮毂装饰件自动喷粉线

Also Published As

Publication number Publication date
CN108025324A (zh) 2018-05-11
DE102015013117A1 (de) 2017-04-13
CN108025324B (zh) 2021-11-19
US20180304294A1 (en) 2018-10-25
WO2017060016A1 (fr) 2017-04-13

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