EP3746252A1 - WIDERSTANDSSCHWEIßVORRICHTUNG SOWIE VERFAHREN ZUM HERSTELLEN VON DRAHTNETZEN - Google Patents
WIDERSTANDSSCHWEIßVORRICHTUNG SOWIE VERFAHREN ZUM HERSTELLEN VON DRAHTNETZENInfo
- Publication number
- EP3746252A1 EP3746252A1 EP19710571.1A EP19710571A EP3746252A1 EP 3746252 A1 EP3746252 A1 EP 3746252A1 EP 19710571 A EP19710571 A EP 19710571A EP 3746252 A1 EP3746252 A1 EP 3746252A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- welding
- electrode
- current bridge
- resistance welding
- contact
- 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.)
- Pending
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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
- B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
- B23K11/008—Manufacturing of metallic grids or mats by spot welding
Definitions
- the invention relates to a resistance welding device for producing wire nets with longitudinal bars and transverse bars, and to a method for producing wire nets with longitudinal bars and transverse bars.
- DE1107855B discloses a mesh welding machine having a first and a second welding head. At the first welding head, a current bridge is arranged. On the second
- Welding head is arranged a first and a second welding electrode, wherein between the first welding electrode and the current bridge, a first longitudinal bar and a cross bar can be introduced and between the second welding electrode and the current bridge, a second longitudinal bar and the cross bar can be introduced.
- the first longitudinal bar and the second longitudinal bar are welded simultaneously with the transverse bar.
- a grid welding machine which has a first welding electrode, which is arranged on a first welding head and having a second welding electrode, which is arranged on a second welding head, wherein between the first welding electrode and the second welding electrode, a longitudinal bar and a cross bar can be brought to weld them together.
- the first welding head is coupled by means of consumers current-carrying with a first busbar.
- the second welding head is coupled by means of consumers energized with a second busbar.
- the grid welding machine known from DE1107855B has the disadvantage that the amount of current at the first and at the second longitudinal bar can not be regulated independently of one another. Thus, it is not possible to ensure reliable welding of both longitudinal bars. In addition, it is not possible to weld two longitudinal bars with different thicknesses to the transverse bar, as this would lead to different welding depths.
- the mesh welding machine known from AT292427B has the disadvantage that the first welding head can only be displaced in the transverse direction if no longitudinal bar is inserted into the mesh welding machine.
- Object of the present invention was to overcomes the disadvantages of the prior art and to provide an apparatus and a method available by means of the wire nets with longitudinal bars and transverse bars can be made flexible.
- a resistance welding device for producing wire nets with longitudinal bars, which are parallel to a longitudinal direction of the resistance welding device can be introduced and transverse bars, which are parallel to a perpendicular to the longitudinal direction aligned transverse direction of the resistance welding device, formed.
- the resistance welding device comprises:
- a first welding head having a first welding electrode
- a contact electrode is formed and at the second welding head, a current bridge is formed, which is electrically conductively coupled to the second welding electrode, wherein the contact electrode is directly brought into contact with the current bridge and wherein the longitudinal bars and cross bars to be welded simultaneously between the ers th Welding electrode and the second welding electrode are clamped.
- the resistance welding device has the advantage that the longitudinal rod and the cross bar are clamped between the first welding electrode and the second welding ßelektrode and thus the energy input for welding the longitudinal rod and the cross bar can be set exactly.
- the contact electrode is in this case electrically coupled to the current bridge, so that only at the first welding head, a power supply or power dissipation must be arranged and the second welding head, only the second current bridge can be arranged.
- the first welding head a transformer angeord net, which is electrically conductively coupled to the first welding electrode and the contact electrode rode.
- the advantage here is that the energy required for the welding process does not have to be supplied by a far away from the contact electrodes transformer by ei ner busbar, but that the lines which are arranged between the transformer and the welding electrode and thus have to conduct a high current , can be kept as short as possible. As a result, the energy loss at the resistance welding device can be kept as low as possible.
- first welding head is coupled to a first linear guide ge and is slidable along this and that the second welding head is coupled to a second linear guide and is slidable along this.
- the two linear guides are in this case aligned in the transverse direction of the resistance welding device, so that the two welding heads are ver pushed in the transverse direction of the resistance welding device.
- first welding heads are arranged on the first linear guide and at least two second welding heads are arranged on the second linear guide.
- the advantage here is that the individual pairs of welding heads can be operated parallel to each other and thus the production speed of the resistance welding device can be increased.
- the current bridge has a contact element which is conical and that the Kunststoffelek electrode is thus formed correspondingly hollow conical.
- the first welding electrode is coupled to a first actuator, in particular to a pneumatic cylinder, and in the direction of the second Welding electrode is displaceable.
- a first actuator in particular to a pneumatic cylinder
- the longitudinal bars and cross bars between the first welding electrode and the second welding electrode can be clamped.
- the contact electrode with a second actuator, in particular special with a pneumatic cylinder, coupled and is ver pushed in the direction of the current bridge.
- the contact electrode will lifted from the current bridge, so that the welding heads can be moved over already existing longitudinal bars away in the transverse direction of the resistance welding device.
- first actuator and the second actuator are independently operable.
- a first flexible current bridge is formed, by means of which the first welding electrode is coupled to the transformer.
- the welding electrode can be moved relative to the transformer.
- a second flexible current bridge is formed, by means of which the contact electrode is coupled to the transformer.
- the contact electrode can be moved relative to the transformer.
- the current bridge is coupled to an adjusting device by means of which it is displaceable in the direction of the first welding electrode.
- the current bridge can be adapted to differently designed wire nets.
- the adjusting device comprises an eccentric, which is coupled to a drive unit, in particular a servomotor.
- the current bridge has a cooling channel in which a cooling medium can be guided.
- first welding electrode and the contact electrode of the first welding head are offset relative to one another in the transverse direction of the resistance welding device. It can thereby be achieved that the contact electrode between tween the individual longitudinal bars and transverse bars can be passed through and thus can be brought directly into contact with the current bridge.
- the invention also provides a method for producing wire nets with longitudinal bars and transverse bars.
- the method comprises the following method steps:
- wire nets can be produced with increased flexibility.
- wire mesh is used for all structures having a grid structure with L Lucassstä ben and transverse bars.
- the longitudinal bars and cross bars can in this case be arranged in a belie bigen angle to each other and have any shape.
- the wire mesh may be formed, for example, as a reinforcement mat, which serves as a reinforcement in concrete structures.
- the wire mesh may be formed as a grid.
- the wire mesh may be formed as a grid.
- Fig. 1 is a perspective view of an embodiment of a resistor
- Fig. 2 is a perspective view of an embodiment of a first and a second welding head
- Fig. 3 is another perspective view of an embodiment of the first and the second welding head.
- the longitudinal bars 3 are guided in the resistance welding device 1 such that they run pa rallel to a longitudinal direction 5 of the resistance welding device 1.
- the transverse bars 4 are guided in the resistance welding device 1 such that they run parallel to egg ner transverse direction 6 of the resistance welding device 1.
- the longitudinal bars 3 and the transverse bars 4 of the wire nets 2 are arranged at right angles to each other.
- the wire mesh 2 is formed as a reinforcement mat.
- the longitudinal bars 3 and cross bars 4 are accordingly speaking as round material formed from a reinforcing steel.
- the longitudinal bars 3 and the cross bars 4 may in this case have different diameters.
- two mutually adjacent longitudinal bars 3 or two mutually adjacent transverse bars 4 have a different diameter.
- the cross bars 4 are all arranged on one side of the longitudinal bars 3 and welded by means of the resistance welding device 1 with the longitudinal bars 3.
- the resistance welding device 1 has at least one first welding head 7 with a first welding electrode 8 and a second welding head 9 with a second welding ⁇ electrode 10.
- the resistance welding device 1 has a plurality of first welding heads 7 or a plurality of second welding heads 9.
- the first welding heads 7 are arranged on a first linear guide 11, by means of which the welding heads 7 in the transverse direction 6 of the resistance welding device 1 are displaceable.
- the second welding heads 9 by means of the second linear guide 12 in Qu erraum 6 of the resistance welding device 1 can be displaced.
- the first linear guide 11 has a first guide rail 13, which is arranged on the base frame 14.
- Each of the first welding heads 7 may be coupled to a first guide carriage 15, which cooperates with the first guide rail 13.
- the first guide carriage 15 are slidably received in the first guide rail 13.
- a second guide rail 16 includes, which is also received on the base frame 14.
- each of the first welding heads 7 and each of the second welding heads 9 is coupled to a drive unit, so that the welding heads 7, 9 can be moved or positioned in the transverse direction 6 of the resistance welding device 1.
- each of the welding heads 7, 9 has its own drive unit and the welding heads 7, 9 can thus be moved or positioned independently of each other in the transverse direction 6 of the resistance welding device 1.
- a first welding head 7 and an associated second welding head 9 are coupled to a common drive unit and thus are always adjustable in pairs to each other.
- the drive unit for adjusting the welding heads 7, 9 may for example comprise an electric motor, which is arranged on the base frame 14 and ge coupled with a drive roller, which drives a circulating between the drive roller and a guide pulley timing belt.
- the toothed belt is in this case coupled to the welding head 7, 9.
- the drive unit is arranged directly on the welding heads 7, 9 and is coupled to a toothed wheel, which engages Ches in a arranged on the base frame 14 rack.
- FIG. 2 and 3 an embodiment of the first welding head 7 and the associated second welding head 9 is shown in various perspective views, the further description of the welding heads 7, 9 based on an inspection together Fig. 2 and 3 takes place.
- the first welding head 7 has a contact electrode 18 in addition to the first welding electrode 8.
- the contact electrode 18 can be brought directly into contact with a current bridge 19, which is arranged on the second welding head 9 in con tact.
- a contact element 20 is arranged on the current bridge 19, with which the contact electrode 18 can be contacted.
- the second welding electrode 10 and the contact element 20 are arranged directly on the current bridge 19.
- the first welding head 7 and the second welding head 9 are positioned to each other such that the first welding electrode 8 and the second welding electrode 10 are arranged opposite to each other and the contact electrode 18 and the Contact element 20 are arranged opposite to each other.
- the first welding electrode 8 is gekop pelt with a first actuator 21 and that the contact electrode 18 is coupled to a second actuator 22.
- the first actuator 21 and the second actuator 22 are designed as hydraulic or pneumatic cylinders.
- the first welding electrode 8 may in this case be arranged on a piston rod of the first actuator 21 and the contact electrode 18 may be arranged directly on a piston rod of the second actuator 22.
- the first actuator 21 and the second actuator 22 independently of each other, the first welding electrode 8 and the contact electrode 18 can move in a feed direction 23. By displacement of the contact electrode 18 in the direction of adjustment 23, this can be combined with the contact element 20. By shifting the first Welding electrode 8, this can be combined with the second welding electrode 10 who the.
- each of the first welding heads 7 has a eige NEN transformer 24 which is arranged directly on the welding head 7 and with the welding head 7 in the transverse direction 6 of the resistance welding device 1 is displaceable.
- first welding electrode 8 by means of a first flexible current bridge 25 is coupled to the transformer 24.
- first welding electrode 8 can be moved relative to the transformer 24 in the feed direction 23.
- the contact electrode 18 is coupled by means of a second flexible current bridge 26 to the transformer 24.
- the contact electrode 18 can be moved in the direction of adjustment 23 relative to the transformer 24.
- the first flexible current bridge 25 or the second flexible current bridge 26 the first welding electrode 8 and the contact electrode 18 are electrically conductively coupled to the transformer 24.
- the flexible current bridges 25, 26 have a large conductor cross-section in order to transmit the necessary for a resistance welding high currents can.
- the flexible current bridges 25, 26 may in this case have a composite of several individual plates or films structure, wel che the current bridges 25, 26 are flexible.
- the flexible current bridges 25, 26 are formed from a copper material.
- the current bridge 19 of the second welding head 9 is coupled with egg ner adjusting device 27, by means of which the current bridge 19 in Zustellrich device 23 is slidably disposed on the second welding head 9.
- the Ver adjusting device 27 may include an eccentric 28 which is coupled to a drive unit 29 which serves to rotate the eccentric 28. By the rotational movement of the eccentric 28 by means of the drive unit 29, the displacement in the feed direction 23 can be achieved.
- At the drive unit 29 may preferably be in the form of an electric motor, in particular a servo motor.
- a servomotor has the advantage that an exact delivery the current bridge 19 is made possible or that the position of the current bridge 19 can be exactly be true.
- the current bridge 19 of the second welding head 9 is arranged electrically isolated on the second welding head 9, so that it has no conductive connec tion with another component of the second welding head 9.
- the current bridge 19 has a cooling channel 30, which serves to guide a cooling medium, whereby the current bridge 19 can be cooled.
- Coolant connections 31, by means of which the cooling medium can be introduced into the cooling channel 30, can be connected to the cooling channel 30.
- a fluid such as a liquid, a gas or an aerosol may be used.
- a cooling channel can also be formed in the area of the first welding electrode 8 and the contact electrode 18. This cooling channel may also be formed in the power supply lines to the first welding electrode 8 and the contact electrode 18.
- a cooling channel is formed in the transformer 24.
- the first welding electrode 8 and the contact electrode 18 are spaced from each other at a transverse pitch 32 and at a longitudinal pitch 33.
- the second welding electrode 10 and the contact element 20 in a transverse direction spacing 32 and in a Llvesslegisab stood 33 spaced from each other.
- an overlap 34 of the longitudinal bar 3 and the transverse bar 4 between the first Sch healthelekt rode 8 and the second welding electrode 10 can be placed and at the same time between the contact electrode 18 and the contact element 20, neither a longitudinal bar 3 nor a transverse bar 4 are arranged.
- the transverse direction spacing 32 and the longitudinal spacing 33 be between 10 mm and 250 mm, in particular between 20 mm and 70 mm.
- the procedure for producing egg ner resistance welding connection between a longitudinal bar 3 and a cross bar 4 be written.
- the entire wire mesh 2 is positioned in the resistance welding device 1 such that the transverse bar 4 to be welded is at the same height as the first welding electrode 8 and the second welding electrode 10.
- the first welding head 7 and the second welding head 9 are displaced in the transverse direction 6, so that the overlap 34 of the longitudinal bar 3 and the transverse bar 4 is arranged exactly between the first welding electrode 8 and the second welding electrode 10 , This positioning situation is shown in FIG.
- the contact electrode 18 is moved by means of the second actuator 22 in the feed direction 23 to the contact element 20 until the contact electrode 18 and the contact element 20 touch each other. Thereby, a current-conducting connec tion between the contact electrode 18 and the contact element 20 can be made.
- the first welding electrode 8 can be moved in the direction of adjustment 23 for two th welding electrode 10 until the longitudinal bars to be welded 3 and transverse bars 4 between the first welding electrode 8 and the second welding electrode 10 ge be clamped.
- the longitudinal bar 3 at the first welding electrode 8 and the transverse bar 4 abut the second welding electrode 10.
- the transverse bar 4 rest against the first welding electrode 8 and the longitudinal bar 3 at the two-th welding electrode 10.
- the first welding electrode 8 is pressed at a predetermined pressure in the direction of the second welding electrode 10, so that the longitudinal bar 3 and the transverse bar 4 are pressed ge against each other with a predefined pressure.
- the contact electrode 18 provides here with the second welding electrode 10 a direct electrical line forth, so that from going from the transformer 24 can form a closed circuit, excluding Lich the first welding electrode 8 and the second welding electrode 10 are spaced from each other and the components to be welded between the first welding electrode 8 and the second welding electrode 10 are arranged.
- the welding current is switched off again and the first welding electrode 8 and the contact electrode 18 are removed from the current bridge 19. Subsequently, the two welding heads 7, 9 can be repositioned in the transverse direction 6 and / or in the longitudinal direction 5, so that a further longitudinal bar and another transverse bar 4 or the same longitudinal bar 3 with a white direct transverse bar 4 or the same cross bar 4 with a further longitudinal bar 3 can be welded.
- Reference numeral 11 Resistance welding device 31 Coolant connection Wire mesh 32 Transverse direction Distance from longitudinal bar 33 Longitudinal distance Transverse bar 34 Overlap
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Resistance Welding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50075/2018A AT520866B1 (de) | 2018-01-29 | 2018-01-29 | Widerstandsschweißvorrichtung sowie Verfahren zum Herstellen von Drahtnetzen |
PCT/AT2019/060030 WO2019144174A1 (de) | 2018-01-29 | 2019-01-25 | WIDERSTANDSSCHWEIßVORRICHTUNG SOWIE VERFAHREN ZUM HERSTELLEN VON DRAHTNETZEN |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3746252A1 true EP3746252A1 (de) | 2020-12-09 |
Family
ID=65763210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19710571.1A Pending EP3746252A1 (de) | 2018-01-29 | 2019-01-25 | WIDERSTANDSSCHWEIßVORRICHTUNG SOWIE VERFAHREN ZUM HERSTELLEN VON DRAHTNETZEN |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3746252A1 (de) |
AT (1) | AT520866B1 (de) |
WO (1) | WO2019144174A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111975185B (zh) * | 2020-09-11 | 2023-11-28 | 浙江坤德创新岩土工程有限公司 | 一种焊接装置、滚焊机及焊接方法 |
AT524244A1 (de) * | 2020-09-17 | 2022-04-15 | Evg Entwicklungs U Verwertungs Ges M B H | Schweißvorrichtung |
CN113600989B (zh) * | 2021-08-20 | 2023-05-12 | 珠海筑享云科技有限公司 | 焊接主机及焊接设备 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT267293B (de) * | 1966-04-07 | 1968-12-27 | Evg Entwicklung Verwert Ges | Verfahren zum Herstellen von geschweißten Drahtgittern und Gitterschweißmaschine zum Ausüben dieses Verfahrens |
AT295294B (de) * | 1968-10-14 | 1971-12-27 | Evg Entwicklung Verwert Ges | Gitterschweißmaschine mit stufenlos veränderbarer Längsdrahtteilung |
AT365492B (de) * | 1979-12-14 | 1982-01-25 | Evg Entwicklung Verwert Ges | Nach der elektrischen widerstandsmethode arbeitende vielpunkt-schweissmaschine zum herstellen von gittern aus laengs- und querdraehten |
US4343981A (en) * | 1980-09-08 | 1982-08-10 | Connolly James D | Resistance welding machine |
IT1392866B1 (it) * | 2009-02-20 | 2012-04-02 | Schnell Spa | Metodo e apparecchiatura per realizzare armature per cemento armato |
-
2018
- 2018-01-29 AT ATA50075/2018A patent/AT520866B1/de active
-
2019
- 2019-01-25 EP EP19710571.1A patent/EP3746252A1/de active Pending
- 2019-01-25 WO PCT/AT2019/060030 patent/WO2019144174A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
AT520866B1 (de) | 2021-12-15 |
AT520866A1 (de) | 2019-08-15 |
WO2019144174A1 (de) | 2019-08-01 |
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