EP2563541A2 - Installation, procédé et commande pour l'amenée d'un agent auxiliaire - Google Patents

Installation, procédé et commande pour l'amenée d'un agent auxiliaire

Info

Publication number
EP2563541A2
EP2563541A2 EP11732413A EP11732413A EP2563541A2 EP 2563541 A2 EP2563541 A2 EP 2563541A2 EP 11732413 A EP11732413 A EP 11732413A EP 11732413 A EP11732413 A EP 11732413A EP 2563541 A2 EP2563541 A2 EP 2563541A2
Authority
EP
European Patent Office
Prior art keywords
drive means
pneumatic cylinder
controllable
piston rod
loose part
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Withdrawn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
EP11732413A
Other languages
German (de)
English (en)
Inventor
Johann Kaussler
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP2563541A2 publication Critical patent/EP2563541A2/fr
Withdrawn legal-status Critical Current

Links

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
    • B23K3/00—Tools, devices or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/06—Solder feeding devices; Solder melting pans
    • B23K3/0607—Solder feeding devices
    • B23K3/0623—Solder feeding devices for shaped solder piece feeding, e.g. preforms, bumps, balls, pellets, droplets
    • 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
    • B23K3/00—Tools, devices or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
    • B23K3/06—Solder feeding devices; Solder melting pans
    • B23K3/0607—Solder feeding devices
    • B23K3/063—Solder feeding devices for wire feeding
    • 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
    • B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
    • B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
    • B23K9/1336—Driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/18—Gripping devices with linear motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/36—Wires

Definitions

  • excipient refers to in the production of working materials, which enter into the production of products only as an insignificant ingredient in a product.
  • excipients which are in solid and continuous form, for example welding wire, solder ribbon or solder wire.
  • a solder refers to a metal alloy that is suitable for soldering metals or alloys.
  • Lotband (Lotbandvorschubsysteme) known which have a com ⁇ plex construction and build correspondingly large volume. This entails a high expenditure on control and high toysskos ⁇ th to be.
  • the complex structure in the known Lotband- feed systems is due to the special requirements of high quality soldering processes.
  • an arrangement for the supply of an excipient which has a controllable drive means, which is set up to feed a loose part by a feed length ⁇ and for returning the loose part to a consumption length.
  • the arrangement further comprises a passive drive means, which is set up for returning the loose part by a tear-off length.
  • the arrangement includes a first controllable clamping means, which is adapted for clamping the excipient to the loose part.
  • the arrangement includes a second controllable Clamping means, which is adapted for clamping the excipient to a fixed part.
  • a controllable drive means advances a release part by a feed length.
  • a passive drive means returns the loose part by a tear-off length.
  • the controllable drive means returns the loose part by a consumption length.
  • a first êtba ⁇ res clamping means clamps the adjuvant temporarily participate in the Los.
  • a second controllable clamping means clamps the auxiliary material ⁇ temporarily to a fixed part.
  • the control of a supply of an adjuvant includes a microprocessor programmed to carry out the method just described.
  • the arrangement, the method and the control have numerous advantages, which are described below.
  • the return to the starting position is similar to the
  • the arrangement has a control which is programmed for clamping the auxiliary substance to the loose part with the first controllable clamping means. Programming is hereby guarantees that the clamping during the advance of the Losteils using the controllable to ⁇ drove by and during the return of the Losteils done with the help of the passive ⁇ drive means.
  • the controller is further programmed, during the return of the Losteils using the controllable drive means clamping the excipient to the fixed part with the second controllable
  • a controller controls the first controllable clamping means so that the auxiliary material is clamped to the loose part. This takes place during the feed of the loose part by means of the controllable drive means, as well as during the return of the loose part by means of the passive drive means. Furthermore, the controller controls the second controllable clamping means so that the excipient is clamped to the fixed part, while the loose part is returned by means of the controllable drive means.
  • the controllable drive means is a double-acting pneumatic cylinder.
  • a front piston rod of the double-acting pneumatic cylinder is connected to the release part.
  • the controllable driving means a double-acting pneumatic cylinder, which has a front piston rod which is connected to the Los ⁇ part.
  • the double-acting pneumatic cylinder ei ⁇ ne rear piston rod which extends in a direction opposite to the Losteil direction. Furthermore, the arrangement includes a sensor which is arranged to monitor the rear piston rod. The controller is programmed to detect a faulty introduction or faulty melting of the auxiliary substance on the basis of a signal from the sensor.
  • a sensor monitors a rear piston rod of the double-acting pneumatic cylinder, which extends in a direction opposite to the loose part.
  • the controller detects a faulty insertion or faulty melting of the excipient on the basis of a signal from the sensor.
  • the passive drive means of the arrangement is a single-acting pneumatic cylinder, which is permanently acted upon for the return of the loose part by the tear length.
  • the passive drive means is a single-acting pneumatic cylinder, which is permanently acted upon and has a piston ⁇ rod, which is passed through the loose part.
  • a stop ⁇ flange abuts the end of the piston rod of the single-acting pneumatic cylinder on the loose part, whereupon the piston rod is taken to the Abr whatsoever.
  • the double-acting pneumatic cylinder is depressurized maral ⁇ tet.
  • the single-acting pneumatic cylinder returns the loose part by the tear-off length.
  • the double-acting pneumatic cylinder returns the loose part by the consumption length.
  • the arrangement comprises an adjusting screw which is arranged to shift Ver ⁇ a piston rod of the single-acting pneumatic cylinder.
  • the consumption length ie a consumable per soldering ⁇ de length of the excipient, can be easily adjusted by means of the adjusting screw.
  • the loose part on a removable and replaceable guide unit which provides a guide for the excipient.
  • the arrangement of the auxiliary material is a solder, especially a solder strip or lot ⁇ wire.
  • the arrangement is a Lotvorschub.
  • the controller detects a faulty introduction of the excipient and does not turn on a soldering current.
  • the transmitter does not signal that the back ⁇ tere piston rod moves back, whereupon the control switches on a soldering current, with the soldering is carried out of the workpieces.
  • two cases are distinguished after the soldering of the workpieces has already taken place.
  • the transmitter sor signals that the rear piston rod of the double acting pneu matic cylinder ⁇ returns because the single-acting pneumatic cylinder, the loose part to the back Abr discloseuben ⁇ leads.
  • the sensor does not signal that the rear piston rod is retracting, whereupon the controller recognizes a faulty melting of the auxiliary substance.
  • FIG. 4 shows operating states of an arrangement for supplying an auxiliary in a plan view, the four operating states of the arrangement in a side view, the time sequence of a pneumatic control during a complete feed cycle, a pneumatic circuit diagram,
  • FIG. 5 two views of the arrangement
  • 6 shows a plan view, a side view and a cross section of the arrangement ⁇
  • Figure 7 is an exploded view of the arrangement
  • Figure 8 another view of the arrangement.
  • FIG. 1 shows four operating states of an arrangement for supplying an auxiliary substance in a plan view, wherein a section through the arrangement is shown.
  • the four operating states are a first operating state 11, a second operating state 12, a third operating state 13 and a fourth operating state 14.
  • the arrangement which consists of a release part 7, a fixed part 8, a sensor 9, a first controllable clamping means 1, a second controllable clamping means 2, a controllable drive means 3 and egg ⁇ nem passive drive means 4 consists.
  • the arrangement may include other elements such as a controller, such as a pneumatic controller.
  • FIG. 1 also shows an adjuvant 5 which, although not belonging to the arrangement, is advanced by it.
  • the adjuvant 5 is for example a solder tape or a solder wire. In this case, the arrangement is a Lotvorschub.
  • the first controllable clamping means 1 is designed for example as a single-acting cylinder with return spring. In this case, a clamping of the excipient 5 to the loose part 7 is pneumatically by air pressure and opening on the return spring.
  • the second controllable clamping means 2 may be flat ⁇ if designed as single-acting cylinder. Here is a clamping of the excipient 5 to the fixed part 8 by a spring and opening pneumatically by air pressure.
  • the controllable drive means 3 is designed in figure 1 as a double-acting pneumatic cylinder ⁇ which a front piston rod 31 in the direction of Losteils 7 and a rear piston rod 32 in the direction of the sensor 9 has.
  • the front piston rod 31 is in this case connected to the release part 7.
  • This connection can be made, for example, by means of a clamping handle, whereby a feed length x, by which the loose part 7 can be advanced maximally with respect to the fixed part 8, is adjustable. Be set as the feed length x Kings ⁇ nen for example, 0-16 mm.
  • the controllable drive means 3 serves the advance of the Los ⁇ part 7 by the feed length x, as can be seen from the transition from the first operating state 11 to the second operating state 12 in Figure 1.
  • the sensor 9 is arranged so that it can monitor the rear piston ⁇ rod 32. For example, the sensor 9 generates a signal when the rear piston rod 32 is pushed into or in front of it. Based on the signals of the sensor 9, both a faulty introduction and a faulty melting of the excipient 5 can be detected, as will be explained below.
  • the passive drive means 4 is in Figure 1 is a single-acting pneumatic cylinder, which angeord ⁇ net for returning the loose part 7 by a tear length z and this is permanently applied.
  • the loose part is at a stop flange 42 of a piston rod 41 of the passive drive means 4 so that a further stroke of the controllable drive means 3, the loose part 7 continues to advance and thereby the piston rod 41 of the passive drive means 4 entrains the tear length z.
  • the controllable Antriebsmit ⁇ tel 3 and the loose part 7 has its maximum feed position he ⁇ reaches.
  • the auxiliary material 5 is located between two workpieces 50, which are also shown in Figure 1 in a plan view.
  • electrodes are closed, while the excipient 5 is clamped between the workpieces 50 to be soldered.
  • the controllable drive means 3 is depressurized.
  • the compressed air in the passive drive-medium 4 generates a belt tension in adjuvant 5 and tries to push back in the direction of the first Radiozu was ⁇ starting position shown 11, the loose part.
  • the passive drive means 4 succeeds in this situation in returning the loose part 7 by the tear-off length z. This is detected by the sensor 9, since it registers a corresponding return movement of the rear piston rod 32. In this case, no soldering current is released.
  • the sensor 9 registers no movement of the loose part 7, the soldering current is switched on and the soldering is carried out. In this case, the clamped excipient 5 melts off, whereupon the passive drive means 4 pushes the loose part 7 back by the tear-off length z. This prevents soldering of the excipient 5 on the workpieces 50.
  • the sensor 9 detects the return movement of the loose part 7 and serves in this case to check the melting of the excipient 5. Fin ⁇ det after the soldering in case of failure, no movement of the Los- part 7 instead, the excipient 5 is not melted off and the process is stopped.
  • a stable position of the loose part 7 is achieved by a compression spring 44 between the loose part 7 and the fixed part 8.
  • the excipient 5 in the fixed ⁇ part 8 by means of the second controllable clamping means 2 ge ⁇ clamped and released in the loose part 7.
  • the controllable drive means 3 now returns the loose part 7 to its original position, whereby a consumption length y is covered.
  • a catch movement between loose part 7 and auxiliary 5 is carried out, which compensates for the consumed consumption length y of the auxiliary substance 5 and again for the subsequent soldering operation defined length of the excipient 5 provides.
  • the fourth operating state 14 shows the return to the starting ⁇ position. Both the feed length x and the consumption length y are directly adjustable. The setting of the feed length x via a clamping handle has been described previously.
  • Figure 1 shows an adjusting screw 43, which is arranged for displacement of the piston ⁇ rod 41 of the passive drive means 4.
  • the consumption length y can be set directly.
  • FIG. 2 shows the first operating state 11, the second operating state 12, the third operating state 13 and the fourth operating state 14 of the arrangement in a side view. Also shown in Figure 2, the sensor 9 and a line along the sensor 9 scans and possibly the rear ⁇ re piston rod 32 registered. Only in the second operating state 12 does the rear piston rod 32 not intersect the scanning line of the sensor 9. FIG. 2 again shows the different positions of the loose part 7 relative to the fixed part 8, depending on the operating state. In the first operating state 11 and in the fourth operating state 14, the piston rod 41 projects with the stop flange 42 with respect to the release part 7. It can also be seen in Figure 2, as the excipient 5 is clamped between the workpieces 50. Furthermore, FIG. 2 shows a guide unit 51 which provides a guide for the auxiliary substance 5.
  • the first operating state 11 is a basic position.
  • two ⁇ th operation state 12 the excipient is clamped between the 5 to be soldered workpieces 50th Then, a voltage is applied to the excipient 5 via the loose part 7.
  • the third operating state 13 shows the end of a Abr michbewe ⁇ tion.
  • a follow-up movement for the consumption length y has already taken place.
  • Figures 1 and 2 thus show a complete feed cycle for the
  • FIG. 3 shows the chronological sequence of a pneumatic control during a complete supply cycle.
  • a first path-time diagram 71 relates here to the first controllable clamping means 1 and a second path-time diagram 72 to the second controllable clamping means 2.
  • the two path-time diagrams follow from left to right a temporal History and bewe ⁇ gen between an open state 63 and 64.
  • Figure 3 shows a third path-time diagram 73 for the controllable drive means 3 and a four-th path-time diagram 74 for the passive drive means 4 ,
  • FIG. 3 also shows time windows or times, during which the operating states shown in FIG. 1 and FIG. 2 apply.
  • the first operating state 11 applies at the beginning of the path-time diagrams
  • the second operating state 12 during the first time interval 81 and the second time interval 82
  • the third operating state 13 at the beginning of the third time interval 83
  • the fourth operating state 14 at the end of the third time interval 83.
  • the first operation state 11 refers here to a basic position, as can be seen also from the distance-time diagrams: In the initial position, both drive means are in a ⁇ up state 62.
  • the first controllable clamping means 1 is open and the second controllable Clamping means 2 is ge ⁇ clamped. Subsequently, the first controllable clamping means 1 is clamped in the loose part 7 before the second controllable clamping means 2 is released in the fixed part 8.
  • the first controllable drive means 3 is extended, wherein it entrains the passive drive means 4, as soon as the end face of the Losteils 7 abuts the stop flange 42 of the passive drive means 4. Finally, the controllable drive means 3 is fully extended, ie the loose part 7 has been advanced by the feed ⁇ length x maximum.
  • the second operating state 12 begins in FIG. 3 with the first time interval 81, in which the
  • Excipient is clamped between the workpieces 50 to be soldered, for example by electrodes are closed. Then the controllable drive means 3 is depressurized. Since ⁇ is waited and checked during the second time interval 82, whether the rear piston rod 32 as written down be ⁇ drives back, because the passive drive means 4 leads the loose part 7 by the Abr fabricatin z, whereupon detects a faulty introduction of the excipient 5 and no Lötstrom would be switched on.
  • the excipient 5 is first clamped with the second controllable clamping means 2 in the fixed part 8 and on ⁇ closing solved with the first controllable clamping means in the Losteil 7, whereby as shown in Figure 3, the third operating ⁇ state 13 is reached.
  • the conditions for the follow-up movement during the third time interval 83 are given, wherein the controllable drive means 3 is completely moved back into the retracted state 62 and thus into the fourth operating state 14.
  • FIG. 4 shows a pneumatic circuit diagram 100 for the basic position or the first operating state 11 of the arrangement.
  • a first section 110 and a second section 120 for the compressed air distribution are shown.
  • the first section 110 is located in front of a safety valve and the second section 120 behind a safety valve.
  • FIG. 4 shows a first valve 101, which is designed as a 3/2-way valve and can be actuated either by muscle power or series actuation (by means of electrical actuation and magnetic coil). that can.
  • the first valve 101 is provides ⁇ Kohlge by a spring. The same applies to a fourth valve 104 and a fifth valve 105.
  • a manual valve 102 is a 3/2-way valve which is actuated only with muscle force and serves for venting before the introduction of the auxiliary substance 5 into the arrangement ,
  • a shuttle valve 103 is arranged at a suitable position in front of the clamping means.
  • Figure 4 shows the second Ab ⁇ section 120 nor a flow control valve 106 and an air tank 107, which complement the driving of the third controllable drive means 3 via the fourth valve 104 and the fifth valve 105th
  • FIG. 5 shows u. A. the loose part 7, the fixed part 8, the guide unit 51, the adjusting screw 43, the rear piston rod 32 and the sensor 9. Also, the stop flange 42 can be clearly seen in the right-hand illustration.
  • FIG. 6 shows in the upper illustration a view of the arrangement from below, in the middle representation a side view of the arrangement and in the lower representation a view from above (with a section through the arrangement), which is again designed as a solder feed 6.
  • the loose part 7, the fixed part 8, the sensor 9 and the Philosophsein ⁇ unit 51 are shown.
  • the front piston rod 31 toward ⁇ tere piston rod 32, the piston rod 41, the stopper ⁇ flange 42 and the adjusting screw 43 can be seen in the upper and lower display.
  • the section of the lower illustration further allows an insight into the cylinders of the controllable drive means 3 and the passive drive means 4.
  • FIG. 7 shows an exploded view of the arrangement, which is again designed as a solder feed 6.
  • FIG 7 also shows a clamping handle for fast justage of the feed length x.
  • the clamping ⁇ handle results from the recess shown in Figure 7 in the loose part 7 and two screws 33. By tightening the screws 33, the front piston rod 31 to the loose part 7 ge ⁇ clamped.
  • FIG. 8 shows a further view of the arrangement, the perspective of which corresponds to the exploded view of FIG.
  • the Lotvorschub 6 is fully assembled here. Again clearly visible is the loose part 7, the fixed part 8, the sensor 9, the guide unit 51, the adjusting screw 43 and the rear piston rod 32nd

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Automatic Assembly (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

L'invention concerne un système très compact d'avancement de bande de soudure qui traite des bandes de soudure de dimensions quelconques avec une reproductibilité et une sécurité de processus élevées. Il comporte un cylindre asservi en permanence et à action pneumatique simple, ce cylindre exerçant une précontrainte nécessaire sur une bande de soudure et induisant un mouvement d'arrachage de force définie, à des fins d'analyse du processus. Seul un cylindre pneumatique réglable à double action supplémentaire est nécessaire pour effectuer trois mouvements ou positionnements différents. Cette réduction de moyens se traduit par une diminution notable de la complexité technique de la commande et de la régulation et par une conception très compacte qui permet un accès aisé à l'emplacement de soudure et de multiples positions de montage. Il est possible de régler de manière définie les longueurs de rupture et de consommation par opération de soudure. Un seul capteur contrôle à la fois l'introduction correcte et la fusion de la bande de soudure. Ceci contribue à la fois au contrôle de la qualité et à la sécurité de processus puisque le serrage correct de la bande de soudure entre les pièces à souder est contrôlé avant la mise en route du courant de soudure.
EP11732413A 2010-07-06 2011-07-06 Installation, procédé et commande pour l'amenée d'un agent auxiliaire Withdrawn EP2563541A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010026173 2010-07-06
DE201010041203 DE102010041203A1 (de) 2010-07-06 2010-09-22 Anordnung, Verfahren und Steuerung zur Zufuhr eines Hilfsstoffs
PCT/EP2011/061431 WO2012004313A2 (fr) 2010-07-06 2011-07-06 Installation, procédé et commande pour l'amenée d'un agent auxiliaire

Publications (1)

Publication Number Publication Date
EP2563541A2 true EP2563541A2 (fr) 2013-03-06

Family

ID=44628518

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11732413A Withdrawn EP2563541A2 (fr) 2010-07-06 2011-07-06 Installation, procédé et commande pour l'amenée d'un agent auxiliaire

Country Status (3)

Country Link
EP (1) EP2563541A2 (fr)
DE (1) DE102010041203A1 (fr)
WO (1) WO2012004313A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014006357B3 (de) * 2014-04-30 2015-06-25 Festo Ag & Co. Kg Druckluftsystem mit Sicherheitsfunktion und Verfahren zum Betreiben eines solchen Druckluftsystems
DE102015218478A1 (de) * 2015-09-25 2017-03-30 Siemens Aktiengesellschaft Anordnung, Verfahren und Steuerung zur Zufuhr eines Hilfsstoffs
CN105478955A (zh) * 2016-01-08 2016-04-13 成都市宏山科技有限公司 改进型手机维修卡具
DE102016203081A1 (de) * 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Verfahren, Anordnung und Steuerung zur Zufuhr eines Hilfsstoffs
CN109592483A (zh) * 2018-11-26 2019-04-09 浙江伟星实业发展股份有限公司 一种金属线材送料装置
CN110422665B (zh) * 2019-07-23 2024-09-13 浙江川禾新材料有限公司 一种用于焊带分段扭转的加工流水线

Citations (1)

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Publication number Priority date Publication date Assignee Title
US2849106A (en) * 1956-07-06 1958-08-26 Sylvania Electric Prod Feeder device

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Publication number Priority date Publication date Assignee Title
DE924208C (de) * 1953-07-01 1955-02-28 Wilhelm Roecker Ges Mit Beschr Vorrichtung zum Vorschieben eines Drahtes, Metallbandes od. dgl. bei Werkzeugmaschinen, insbesondere Drahtvorschubeinrichtung fuer Drahtstiftmaschinen
DE3727343A1 (de) * 1987-08-17 1989-03-02 Bosch Gmbh Robert Verfahren zum dosieren der lotmenge bei einer loetvorrichtung
DE4140603B4 (de) * 1991-12-10 2005-06-09 Robert Bosch Gmbh Löt- beziehungsweise Schweißvorrichtung mit automatischer Zuführung von Zusatz werkstoff

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
US2849106A (en) * 1956-07-06 1958-08-26 Sylvania Electric Prod Feeder device

Also Published As

Publication number Publication date
WO2012004313A2 (fr) 2012-01-12
WO2012004313A3 (fr) 2012-07-05
DE102010041203A1 (de) 2012-01-12

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