WO2014166864A1 - Procédé et dispositif de séparation de petites pièces - Google Patents

Procédé et dispositif de séparation de petites pièces Download PDF

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Publication number
WO2014166864A1
WO2014166864A1 PCT/EP2014/056918 EP2014056918W WO2014166864A1 WO 2014166864 A1 WO2014166864 A1 WO 2014166864A1 EP 2014056918 W EP2014056918 W EP 2014056918W WO 2014166864 A1 WO2014166864 A1 WO 2014166864A1
Authority
WO
WIPO (PCT)
Prior art keywords
small parts
small
small part
axis
lengthwise position
Prior art date
Application number
PCT/EP2014/056918
Other languages
English (en)
Inventor
Markus Feierabend
Jan Weber
Original Assignee
Newfrey Llc
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 Newfrey Llc filed Critical Newfrey Llc
Publication of WO2014166864A1 publication Critical patent/WO2014166864A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/20—Stud welding
    • B23K9/206—Stud welding with automatic stud supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
    • B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/001—Article feeders for assembling machines
    • B23P19/002—Article feeders for assembling machines orientating the articles

Definitions

  • the invention relates to a method for separating and supplying small parts which have a shaft section extending along an axis of the small part, and a flange section which has a larger diameter than the shaft section, and which in relation to the small parts axis can occupy a first small part lengthwise position and a second opposing small part lengthwise position. Furthermore the present invention relates to a device for separating and supplying small parts of this kind, particularly for carrying out the method mentioned above.
  • the present invention relates to a joining assembly with a joining tool and a device of this kind in order to supply the separated small part to the joining tool.
  • studs which have a shaft section and a flange section, onto a surface of a work- piece (sheet metal) through access on one side, wherein the studs then serve as anchors for further fastening systems.
  • the studs can thereby be formed by way of example as grounding studs wherein the shaft section hereby has as a rule a threaded section in order to fasten by way of example cable shoes by means of a nut.
  • small parts such as rivets or punch rivets are used to connect two workpieces to one another.
  • the shaft section of a small part of this kind can hereby be provided previously with a nut which to produce a solid assembly is then first unscrewed and after setting the cable shoes is screwed up again.
  • the first small part lengthwise position can be a position in which the flange section is at the front in the delivery direction, in which case the second small part lengthwise position designates a position in which the shaft section is at the front.
  • This definition can however also be reversed.
  • the small parts are moved into a holding device "from behind”, in which case the first lengthwise position of the small part is as a rule that position in which the flange section is at the front in the delivery direction.
  • small parts can be moved "from the front” into a holding device, in which case the first lengthwise position of the small parts is the one in which the shaft section is at the front in the delivery direction.
  • Small parts of the type described above are generally supplied as loose bulk material.
  • the loose bulk material is normally placed in a stepped conveyor which has a channel or a groove in which the small parts are lined up stochastically in one of the two lengthwise positions of small parts.
  • transfer the small parts then from the channel to a pair of rails whose spacing is selected so that the small parts are turned by the effect of gravity so that the shaft sections of the small parts extend between the rails.
  • the small parts are then delivered to a separating device successively in a position in which their axes are aligned perpendicular to the delivery direction.
  • the separating device can be formed as a simple slider.
  • a device of this kind is known by way of example from document DE-OS 1 506 457.
  • the object of the invention is to provide an improved method for separating and supplying small parts, an improved device for separating and supplying small parts as well as an improved joining assembly wherein in particular the reliability of the separation and supply is increased.
  • the object of the invention is achieved by a device for separating and supplying small parts of this kind, more particularly for carrying out the method according to the invention, with a position standardizing device for standardizing the lengthwise position of the small parts, and a separating device for separating the small parts, wherein the position standardizing device is operationally arranged after the separating device.
  • a joining assembly with a joining tool and a separating and supply device according to the invention in order to supply a separated single small part to the joining tool.
  • Supplied small parts can be delivered to the joining tool as usual, by way of example by means of blowing air.
  • this delivery section can be made simpler and with more robust contours so that the reliability of the delivery to the separating device can be increased.
  • the lengthwise position of the small parts can generally deviate somewhat from an ideal lengthwise position as a result of the outer diameters which are different over the length of the small parts.
  • the term small part lengthwise position is therefore here also to include such inclined positions which deviate somewhat from the ideal small part lengthwise position.
  • the step of setting the small parts into the first lengthwise position includes tilting the small parts each about a tilt axis transversely to the axis of the small part.
  • the tilting direction can thereby be different depending upon which lengthwise position the small part has previously occupied.
  • the lengthwise position of the small parts is consequently standardized, namely in particular into the first lengthwise position in which the small parts are to be delivered by way of example to a joining tool.
  • the small parts are thereby preferably already aligned parallel to an axis along which the small parts are discharged from the supply position, thus are delivered by way of example to a joining tool.
  • the small part axis of the small parts standardized as regards their position can be by way of example parallel to an axis of a connection of a delivery hose to a joining tool.
  • the step of setting the small parts into the first lengthwise position comprises moving a separated small part over a slot aligned parallel to the axis of the small part, with the width of the slot being larger or equal to the diameter of the shaft section and with the width being smaller than the diameter of the flange section, so that the separated small part tilts as a result of gravity into the first lengthwise position in which the shaft section extends into the slot.
  • the small parts preferably have a longitudinal centre of gravity which is offset against the axial centre of the flange section in the direction to the shaft section. It can hereby be achieved that the small parts which are moved over a slot of the said kind automatically tilt as a result of gravity into a standardized longitudinal position, namely independently of the lengthwise position in which they are moved over the slot.
  • the alignment of the small part lengthwise position changes during the tilting process, wherein the term lengthwise position of the small parts after the position standardization relates to the direction in which the small parts are then discharged, and by way of example in the case of a delivery to the separating device, relates to an axis in which the small parts are delivered.
  • the small parts are delivered to the separating device in a state in which their axes are aligned parallel to one another. In this case, the small parts can for example roll down a delivery path.
  • the small parts are preferably formed substantially rotationally symmetrical the delivery can hereby be configured structurally simpler, with a simultaneously higher robustness and consequently with an increased reliability.
  • the step of separating comprises moving a small part parallel to the small parts axis into a small parts pick-up of a slider which can be displaced in a direction transversely hereto between a pick-up position and a supply position.
  • slider is to be interpreted widely.
  • a slider is a component part which can slide longitudinally along a displacement axis.
  • the slider can however also be a rotary slider in the manner of a rotor.
  • the method according to the invention is preferably used in conjunction with a method for delivering separated small parts in the form of joining elements in a first lengthwise position to a joining tool wherein the joining elements are first separated individually by means of the method according to the invention and supplied in the first lengthwise position and then one separated joining element is delivered or discharged in the first lengthwise position to the joining tool.
  • the separating device has a slider which is displaceable at least between a pick-up position to receive a small part and a supply position to supply a small part, along a displacement direction, more particularly along a displacement axis.
  • Separation can take place in a particularly robust manner by means of such a slider which as stated can be a longitudinal slider or a rotary slider.
  • Small parts delivered in the longitudinal direction can hereby be taken up securely and reliably into the small parts pick-up.
  • a displacement direction parallel or inclined to the lengthwise position of the small parts is however also possible.
  • the device according to the invention contains a slider which is displaceable along a displacement direction between a pick-up position for receiving a small part and a supply position for supplying a small part, wherein the displacement direction is aligned transversely to the axis of a received small part and wherein the slider in the supply position is assigned a tilt device by means of which a small part moved from the pick-up position into the discharge position is tilted about a tilting axis which is aligned parallel to the displacement direction.
  • a preferred position orientation can take place in a mechanical manner.
  • the small parts can thereby have already been standardized as regards their lengthwise position before being transferred to the tilting device. It is however particularly preferred if the small parts are supplied to the tilting device in any lengthwise position. Then a standardization of the lengthwise position of the small parts can take place in the tilting device, wherein the tilting direction depends on the original lengthwise position when transferring into the tilting device.
  • the slider is assigned a slider base on which the slider is guided wherein a small parts pick-up of the slider is open towards the slider base and wherein the slider base has a slot assigned to the supply position of the slider and aligned parallel to the small parts axis of a received small part whose width is no less than the diameter of the shaft section and whose width is less than the diameter of the flange section so that as a result of gravity the small part tilts in the supply position about a tilt axis which is preferably aligned parallel to the displacement axis so that the shaft section extends into the slot.
  • the slot forms with this embodiment a tilting device, by means of which the position of the small parts can be standardized.
  • the slot is formed on a one-piece component in the form of the slider base, the slot, or its edges, can be well controlled as regards its tolerance position.
  • a ram can be moved into the slot in a direction transversely to the displacement direction in order to align the tilted small part with a discharge opening and/or to close a discharge chamber.
  • a position in the direction transverse to the displacement direction after the tilting process can be non-uniform.
  • the discharge position of the tilted small part can be aligned with a discharge opening (or a connection of a supply hose) via the ram which can be driven into the slot transversely to the displacement direction.
  • a substantially closed discharge chamber is formed by the slider base, the slider and the ram wherein blowing air can be supplied through the slot in order to eject a small part through the discharge opening from the slot and out of the discharge chamber, preferably in the direction of a joining tool.
  • the separating device has a blocking device which is assigned to a transfer device for rows of small parts and is designed to block the advancement of the row of small parts except for a foremost small part which is to be transferred into a small parts pick-up of the separating device.
  • a separation of the small parts can take place before turning into a discharge position. Due to the modified sequence, the turning or tilting movement of the small part is thereby decoupled from other dynamic movements and interactions with other small parts.
  • the transfer device for transfer to the separating device can be produced with a more robust contour, by way of example in the form of a simple chute, so that the sensitivity to tolerances of the small parts can be reduced.
  • the loading contour about which the small part tilts in the position standardizing device can be produced by a slot in a slider base and consequently in a single part so that the loading contour is better controlled as regards its tolerance position.
  • the small parts can be by way of example welding studs. It is particularly preferred if so-called grounding studs are used which can serve as connection for earth cables of electrical component groups, such as used in the vehicle industry. For here such grounding studs are frequently welded in several places on the metal body plate in order to produce at different locations a uniform earthing for the different electrical component groups of a motor vehicle.
  • Fig. 1 shows a diagrammatic view of a first embodiment of a joining assembly according to the invention
  • Fig. 2 shows a diagrammatic sectional view through an embodiment of a separating and supply device according to the invention, corresponding to a sectional view along the line ll-ll of Fig. 1 ;
  • Fig. 3 shows a diagrammatic sectional view along the line Ill-Ill of Fig. 2;
  • Fig. 4 shows a diagrammatic perspective view of a further embodiment of a device according to the invention for separating and supplying small parts, integral in a delivery device for small parts;
  • Fig. 5 shows a further illustration of the device of Fig. 4 with a slider in a supply position
  • Fig. 6 shows a diagrammatic sectional view through the separating and supply device of Figs. 4 and 5.
  • Fig. 1 shows diagrammatically a joining assembly marked generally by 10.
  • the joining assembly 10 has a joining tool 12 which can be configured by way of example as a stud welding tool, a riveting tool or as a punch riveting tool.
  • the joining tool 12 serves for carrying out a joining process by using a small part 14 in the form of a joining element.
  • a joining element 14 of such kind is welded onto a workpiece assembly 16, as shown diagrammatically in Fig. 1.
  • the small part 14 thereby comprises a flange section F which is welded onto the workpiece assembly 16, and a shaft section S which extends along an axis of the small part and which can be by way of example designed as a threaded section.
  • the small part 14 can thereby be formed in particular as an earthing stud. If the small part is designed as a rivet or punch rivet then it can serve in a joining process to connect two workpieces of a workpiece assembly to one another.
  • the joining tool 12 can be a manually guided tool.
  • the joining tool 12 is however preferably moved three-dimensionally by means of a robot 18 which can move the joining tool up to joining positions of a workpiece assembly 16, as is generally known.
  • the joining assembly 10 furthermore comprises a delivery device 20 for delivering the separated small parts individually to the joining tool 12.
  • the delivery device 20 thereby has a loose material container 22 in which the joining elements 14 are received unsorted as loose bulk material.
  • the delivery device 20 furthermore has a lining-up device 24 by means of which the small parts 14 can be removed from the loose material container 22 wherein the small parts are hereby aligned along their axis in a row in a channel of the lining-up device 24 wherein the small parts can occupy stochastically a first lengthwise position or a second lengthwise position (in the delivery direction with the flange section at the front or the shaft section at the front).
  • the delivery device 20 furthermore contains a transfer device 26 which can be designed by way of example in the form of a simple chute.
  • the small parts lined up in the lining-up device 24 are delivered via the transfer device 26 to a supply device 30.
  • the supply device 30 serves on the one hand to standardize the lengthwise position of the small parts and to separate the small parts in order that the separated small parts which are then standardized as regards their lengthwise position can be supplied to the joining tool 12.
  • the supply device 30 consequently has in Fig. 1 a diagrammatically illustrated separating device 32 and a position standardizing device 34 which is likewise only shown diagrammatically in Fig. 1 .
  • the position standardizing device 34 is thereby arranged behind the separating device 32.
  • the small parts which are standardized as regards their lengthwise position can then be transported by way of example by means of a supply hose 36 to the joining tool 12.
  • the delivery device 20 can have a compressed air generator 38 which is connected by a blowing air tube 40 to the position standardizing device 34 and through which blowing air 42 can be fed in order to move a separated single small part from the position standardizing device 34 via the supply tube 36 to the joining tool 12.
  • Fig. 1 It can furthermore be seen in Fig. 1 that the small parts are transferred with a non-uniform lengthwise position (14a or 14b) parallel to their axis 44 into the separating device 32.
  • the small parts are delivered to the joining tool 12 in a standardized lengthwise position 14a.
  • the joining tool 12 has a holding device 46 into which the delivered small parts are transferred in order then to be able to initiate a joining process by means of a small part of this kind.
  • FIG. 2 A preferred variation of a supply device 30 of the type described above is illustrated diagrammatically in Figs. 2 and 3.
  • the supply device 30 contains a housing 48 which is indicated only diagrammatically in Fig. 2 wherein a slider base 50 is set rigidly in the housing 48.
  • a slider 52 is mounted displaceably on the slider base 50, namely displaceably between a pick-up position which is shown in Figs. 2 and 3 at 52A, and a supply position, which is shown in Figs. 2 and 3 at 52B.
  • the slider 52 has a small parts pick-up 54 into which the small parts 14 can be introduced along a transfer axis which can be aligned parallel with the small parts axis 44 and is aligned transversely to a displacement axis 57.
  • the displacement of the slider 52 on the slider base 50 is shown diagrammatically in Fig. 2 at 56.
  • the small parts pick-up 54 is open towards the slider base 50.
  • the slider base 50 has a slot 58 running across the displacement axis 57 and having a width B.
  • the width B is greater than a diameter D F of the flange section, and smaller than a diameter D s of the shaft section S of a small part.
  • the position of the small parts is consequently standardized, namely in the first small parts position 14a in which the small parts are provided for the joining tool 12.
  • the small parts pick-up 54 is connected in a direction transversely to the displacement axis 57 to a discharge device which is here formed by way of example as a delivery tube 36.
  • a small part can then be conveyed by blowing air 42 (see Fig. 2) out from the slot 58 and out from the small parts pick-up 54 and on to the joining tool 12.
  • the supply device 30 of Figs. 2 and 3 thereby forms a separating device 32 and a position standardizing device 34 wherein the position standardizing device is designed as a tilting device and is operationally arranged after the separating device 32.
  • Figs. 4 to 6 show a further embodiment of a delivery device 20' which corresponds as regards structure and method of functioning in general to the delivery device 20 of Fig. 1 .
  • the same elements are therefore characterized by the same reference numerals. Basically only the differences will be explained below.
  • the lining-up device 24 comprises a channel element 66 with a channel facing the loose material container 22.
  • the channel element 66 is able to pivot via a lifting rod 68 which is connected to a lifting cylinder 70, as indicated by an arrow in Fig. 4.
  • Small parts lined up in the channel 66 and aligned along their axis can be transferred in this way via a pivotal movement 72 to the transfer device 26 which is designed as a simple chute and is consequently inclined relative to the horizontal so that the small parts slide down through gravity towards the supply device 30.
  • a pivotal axis 74 for the channel element 66 is shown in Fig. 4 at 74.
  • the supply device 30 is here assigned a blocking device 78 which is arranged in the region of the transition between the transfer device 26 and the supply device 30 and is designed to block the feed of the small parts lined up in the transfer device 26 except for a foremost small part which is to be transferred into the small parts pick-up 54 of the supply device 30. This can hereby prevent the slider 52 from becoming jammed as a received small part is transferred into the supply position.
  • the supply device 30 furthermore has in this embodiment a ram 82 which is movable via a ram cylinder 84 in a direction transversely to the displacement axis 57, namely out from the slot 58 or into the slot 58.
  • the ram 82 In the first position the ram 82 is received in a contour of the housing 48 so that it does not impede the displacement of the slider 52 into the supply position.
  • a small part In the supply device a small part is tilted as described above so that it is standardized as regards its lengthwise position and with its axis is aligned with a discharge device, by way of example in the form of a delivery tube 36.
  • the ram 82 can be driven into the slot 58 and into the small parts pick-up 54 in order to define the position of the small part in a direction transverse to the displacement axis 57, more particularly to align it with a discharge opening.
  • the ram 82 can furthermore be suitable for forming with the housing 48, the slider base 50 and the slider 52, a discharge chamber 86, as shown at 82' in Fig. 5.
  • Fig. 6 shows diagrammatically a sectional view through the supply device 30 of Figs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Automatic Assembly (AREA)

Abstract

L'invention concerne un procédé de séparation et de fourniture de petites pièces (14) comprenant une section d'arbre (S) s'étendant le long d'un axe des petites pièces (44) et une section de bord (F) qui présente un diamètre supérieur à celui de la section d'arbre (S), et pouvant occuper par rapport à l'axe des petites pièces (44) une première position dans le sens de la longueur des petites pièces (14a) et une seconde position opposée dans le sens de la longueur des petites pièces (14b), les petites pièces (14) devant être fournies dans une première position dans le sens de la longueur des petites pièces (14a) avec les étapes consistant à d'abord séparer les petites pièces (14) distribuées dans la première ou dans la seconde position dans le sens de la longueur des petites pièces indépendamment de leur position dans le sens de la longueur puis, après la séparation, à positionner celles-ci dans la première position dans le sens de la longueur des petites pièces (14a).
PCT/EP2014/056918 2013-04-12 2014-04-07 Procédé et dispositif de séparation de petites pièces WO2014166864A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013006315.9A DE102013006315A1 (de) 2013-04-12 2013-04-12 Kleinteil-Vereinzelungsverfahren und -vorrichtung
DE102013006315.9 2013-04-12

Publications (1)

Publication Number Publication Date
WO2014166864A1 true WO2014166864A1 (fr) 2014-10-16

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ID=50439402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/056918 WO2014166864A1 (fr) 2013-04-12 2014-04-07 Procédé et dispositif de séparation de petites pièces

Country Status (3)

Country Link
DE (1) DE102013006315A1 (fr)
TW (1) TW201446624A (fr)
WO (1) WO2014166864A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015001250A1 (de) 2015-01-31 2016-08-04 Andrew Hards Vorrichtung zur Vereinzelung von magnetischen Kleinteilen
CN108127385A (zh) * 2017-12-21 2018-06-08 无锡昌至盛机械制造有限公司 一种螺钉的上样分离装置
CN118510615A (zh) * 2021-12-22 2024-08-16 Tox机械工程股份有限公司 供送设备、供送系统和系统
DE102021134409A1 (de) 2021-12-22 2023-06-22 Tox Pressotechnik Gmbh & Co. Kg Vereinzelungsvorrichtung und Zuführsystem

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EP2394777A1 (fr) 2010-06-10 2011-12-14 SIM Automation GmbH & Co. KG Dispositif destiné à la séparation de pièces
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Publication number Priority date Publication date Assignee Title
US3104458A (en) * 1960-12-05 1963-09-24 Creative Res Corp Apparatus and method for positioning, arranging and coupling components
US3161274A (en) * 1961-09-25 1964-12-15 Omark Industries Inc Orientation apparatus and method
DE1478915A1 (de) * 1965-12-30 1969-03-27 Gaydon Richard Hart Verfahren und Vorrichtung zum Einrichten von Schrauben u.dgl.
DE1506457A1 (de) 1966-04-01 1969-07-17 Dahlberg Ab F Verfahren und Vorrichtung fuer den automatischen Vorschub von Massenteilen,welche aus einem Schaft- und einem Kopfteil bestehen
US3836048A (en) * 1972-11-28 1974-09-17 C Lowe Stud orienter
EP0181274A1 (fr) * 1984-10-30 1986-05-14 Edouard Perrillat Mécanisme spécial servant à placer des pièces de toutes formes dans une position bien déterminée, en vue de leur faire subir un usinage
US5067632A (en) 1989-07-07 1991-11-26 Trw Nelson Bolzenschweib-Technik Gmbh & Co. Kg Device for the individual feeding of studs or bolts
US5385434A (en) * 1992-12-09 1995-01-31 Molex Incorporated Electrical connector delivery system
US5735382A (en) * 1995-05-18 1998-04-07 Daewoo Electronics, Co., Ltd. Setscrew feeding apparatus
ES2147479A1 (es) * 1996-12-24 2000-09-01 Const Aeronauticas Sa Dispositivo automatico de suministro y montaje de remaches.
DE19934209C2 (de) 1999-07-21 2001-05-23 Heinz Soyer Bolzenschweistechn Vereinzelungsvorrichtung für Kleinteile
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EP1858659B1 (fr) 2005-02-14 2012-09-12 Newfrey LLC Procede et dispositif d'acheminement d'elements de connexion vers un appareil de traitement
DE102007042876A1 (de) 2007-09-08 2009-03-12 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zum Vereinzeln von Befestigungselementen
CN201261104Y (zh) 2008-08-29 2009-06-24 深圳市鸿栢科技实业有限公司 接地螺栓自动送料机
JP2011235632A (ja) 2010-04-12 2011-11-24 Fujifilm Corp インクセット及び画像形成方法
WO2011150925A1 (fr) * 2010-06-03 2011-12-08 Dencore Aps Appareil de mise en file d'attente de récipients
EP2394777A1 (fr) 2010-06-10 2011-12-14 SIM Automation GmbH & Co. KG Dispositif destiné à la séparation de pièces

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