• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a manual welding torch (1) for arc welding with consumable welding wire (9), with a wire feed unit (10) arranged within a burner housing (2) with a grip region (3) for conveying the welding wire (9) along a conveying axis (16). in which the wire feed unit (10) has a drive unit (12) with a rotation axis (13) arranged vertically to the feed axis (16) of the welding wire (9), a drive roll (14) with a rotation axis (17) and a counter roll (15) with a rotation axis (18) and with a torch button (8). According to the invention, the wire feed unit (10) has a gear stage (19), and the rotation axis (13) of the drive unit (12) is arranged in alignment with the conveying axis (16) of the welding wire (9).
    公开号:AT514316A4
    申请号:T50578/2013
    申请日:2013-09-12
    公开日:2014-12-15
    发明作者:Daniel Mayr；Christian Strumpfl；Rudolf Brandstötter；Walter Mitterhumer
    申请人:Fronius Int Gmbh；
    IPC主号:
    专利说明:

    1
    The present invention relates to a manual welding torch for arc welding with consumable welding wire, comprising a wire feed unit arranged within a burner housing with a handle portion for conveying the welding wire along a conveying axis, which wire feeding unit comprises a driving unit having a rotation axis arranged vertically to the conveying axis of the welding wire, a driving roller having a rotation axis and includes a counter roll with a rotation axis, and with a torch button.
    Manual welding torch with an integrated wire feed unit, so-called push-pull burners, are basically known from the prior art. A disadvantage of the known embodiments is in particular an unfavorable increase in weight, as due to the design relatively large and heavy drive units reach the application. This increased weight of the handwelding torch with integrated wire feed unit is of great disadvantage to the welder since he has to handle more weight. It is also accompanied by the fact that the drive units used so far are placed in such a way that they bring about a particularly unfavorable weight distribution. The reason is that the large or misshapen drive units can not be positioned in a space-saving and ergonomic sense. This has the consequence that at the same time a particularly unfavorable handle ergonomics is implemented or must be implemented. The previously used drive units can not be integrated in standard welding torches because they occupy too much space in the welding torch.
    As a result, currently only manual welding torch are on the market, which have exactly these disadvantages. For example, DE 40 09 391 A1 describes a welding torch which has a drive unit whose axis is positioned horizontally and transversely to the conveying axis of the welding wire. By installing transversely to the conveying axis but a large amount of space is needed so that bulges or projections in the housing of the welding torch are required for the drive unit. This in turn makes handling and accessibility difficult. Likewise, the unfavorable weight distribution as well as Griffergonomie is disadvantageous. The disadvantage is also the required angular gear with poor efficiency, which in turn has a strong influence on the heat loss. So the worse the efficiency, the more heat loss.
    Another variant is described in AT 413 662 B. In this case, the drive unit can be integrated in a robot welding torch or a manual welding torch, wherein the torch handle is guided vertically downwards, similar to a pistol grip. The drive unit is integrated directly into the torch handle, which is compulsory by hand by the user. Essentially, the size of the drive unit determines the size of the torch handle. In this case, it has proven to be particularly disadvantageous that the drive unit develops heat or releases it as a consequence, this heat being specified directly at the burner handle and at the hand of the welder, which the welder compulsorily covers. This is unavoidable in this type of execution, since the drive unit and the burner handle form a unit. Also here is the axis of rotation of the drive in alignment with the axis of rotation of the drive roller, that is arranged next to the conveying axis of the welding wire.
    Object of the present invention is to provide a manual welding torch with integrated drive unit, which essentially corresponds to the size of a manual welding torch without integrated drive unit and which is as good as possible to handle. The disadvantages of the prior art should be avoided.
    The object of the invention is achieved by a manual welding torch in which the wire feed unit has a gear stage, and the axis of rotation of the drive unit is arranged in alignment with the conveying axis of the welding wire. The gear stage acts essentially in the horizontal direction, so that the rotation of the centrally arranged drive unit can be transmitted to the staggered drive roller. By this arrangement of the components of the wire feed unit in the welding torch disadvantages such as heavy weight, poor ergonomics, unfavorable heat generation or heat dissipation can be avoided. Above all, however, the entire wire feed unit with integrated drive unit can be integrated into a standard manual welding torch.
    Likewise, it is advantageous according to the invention that, in contrast to conventional systems, no additional gear unit has to be grown separately. Conventional systems are constructed in such a way that fundamentally a drive unit, usually an inner rotor with a stationary outer winding, is used. Subsequently, a separate gear stage is then flanged by design to obtain the desired gear ratio and subsequently the melting wire electrode is then moved accordingly in the desired speed. The subject invention allows a smaller version of manual welding torches, in contrast to the known large-volume burner housings of manual welding torches with integrated wire feed units and thus allows a user-friendly and ergonomic design. With such a manual welding torch with a standard burner housing large delivery lengths of the welding wire can be achieved in the hose packages, for example, 10m, which was previously possible only with the large, heavy and bulky manual welding torches.
    Advantageously, the axis of rotation of the drive roller and the axis of rotation of the counter-roller are arranged vertically to the conveying axis of the welding wire.
    Preferably, the wire feed unit is arranged outside the gripping area of the burner housing. In this construction, the heat emanating from the drive unit is not emitted directly to the gripping area of the burner housing, which is covered by the welder. The wire feed unit or at least most of the parts thereof will be arranged in front of the gripping area of the welding torch, but theoretically may also be arranged behind the gripping area.
    According to a further feature, the conveying axis of the welding wire is arranged above the drive unit and the burner probe.
    Advantageously, the drive unit is arranged between a front end of the burner housing and the torch trigger. This results in a space-saving arrangement in the manual welding torch. Characterized in that the drive unit is arranged in a region outside the gripping area of the burner housing of the manual welding torch, which is not enclosed by the hand of the welder, the drive unit according to the invention can be thermally stressed more. Consequently, an increased power output of the drive unit is possible. The gripping area of the burner housing, which is enclosed by the hand of the welder, is thereby not heated more strongly and does not exceed the maximum temperature defined in this area by a standard.
    Optimal spatial relationships are achieved in that the axis of rotation of the drive roller and the axis of rotation of the counter-roller are arranged offset in the direction of the conveying axis of the welding wire and the axis of rotation of the counter-roller and the axis of rotation of the drive unit are arranged in a direction symmetrical to the conveying axis of the welding wire triangle.
    A space-saving design results from the fact that the drive unit, the axis of rotation of the drive roller and the gear stage are designed as a common unit. By such an integrated design, no additional space or only slightly more space for the gear stage is required and the components of the wire feed unit can thus find a place in a standard housing of a manual welding torch. Such a space-saving integration of the wire feed unit in the burner housing results in a favorable ergonomics of the manual welding torch, which was not given in previous welding torches with the described unfavorable surveys. Thus, in the manual welding torch of the subject type, such elevations, which are troublesome and impractical to handle for the welder, are eliminated. Optimal for the welder is a manual welding torch, which has the lowest possible weight, is handy, has no disturbing elevations and at the same time ergonomically well shaped in the hand. Such an ergonomically good implementation is only possible if the welder can grasp the torch handle with his hand without hindering disturbing elevations or the like. 5/17 5
    Preferably, the gear stage is designed as a two-stage spur gear.
    Preferably, the drive unit is designed as a brushless external rotor motor. An external rotor has a design-related small size and thus takes up little space. The diameter of the outer rotor essentially determines the width of the handle of the manual welding torch. It is an electric motor, which has a standing winding inside and in which rotating magnets rotate on the outside. The detection of the speed of this motor is accomplished according to the invention via Hall speed sensors. These are arranged on the stator and use the magnets from the rotor, so that the speed is known for the control. Thus, no additional space is required for the speed detection. In contrast, the prior art requires its own encoder. This type of construction, as already mentioned above, is characterized in particular by the fact that the space required for installation is low. In contrast, there are the so-called inner rotor. This type of construction is usually DC motors. These are constructed so that there are magnets on the outside and inside a rotating winding is arranged. Alternatively, brushless inner rotor can be used, in which case the winding is in the stator and the magnets rotate inside. In both types, it is problematic that this embodiment requires a relatively large amount of space. As a result, such an internal rotor results in that the advantages according to the invention described here can not be implemented. The use of an external rotor is essential to the invention as well as the special arrangement between the front end of the burner handle and torch button. In order to realize the effects according to the invention, such as weight saving, miniaturization or favorable grip ergonomics, it is necessary to use a relatively small drive unit as well as the clever arrangement of the individual components, since the advantageous effects can only be implemented by the arrangement of the drive unit according to the invention.
    The combination of small drive unit and gearbox 6/17 6 tufe massive weight reduction can be achieved. The use of an external rotor thus allows a weight reduction of up to 50% of the wire feed unit, since the external rotor also has a much lower weight due to the particularly small design. Of course, this has no limitations on the properties for wire conveying. Apart from the massive weight advantage of the use of an external rotor has a further significant advantage that can be cleverly used according to the invention. The circulating on the outside of the rotor magnets have a certain mass, which is set in rotation and acts as a flywheel. Overall, this results in a high moment of inertia, whereby disturbances in the wire feed can be suppressed and a constant wire feed speed results. In the event that, for example, the welding wire sticks to the contact tube, it is possible due to the high moment of inertia that the welding wire does not abruptly stop and stick, but that due to the flywheel this adhesive effect is overcome and the welding wire is further promoted. The force with which the welding wire is conveyed is constantly strong due to the high momentum and overcomes the adhesive effect. When using an internal rotor drive, which has no such flywheel, this can not or hardly be prevented. This advantageous effect is particularly relevant for aluminum welding wires. Likewise, the buckling of the welding wire is prevented immediately after the push wire feed by this effect. This favorable effect is reinforced by the fact that the external rotor is connected to the gear stage. In this case, the gear ratio acts as a gain.
    When using internal rotors as a drive unit integration of the wire feed unit in a standard burner housing is not possible due to the larger size. In known manual welding torches, for example, additional lateral elevations in the burner housing (see, for example, the construction according to DE 40 09 391 A1) or the arrangement of a pistol-like handle are necessary (for example according to AT 413 662 B) in order to integrate the entire drive unit. 7/17 7
    With the objective implementation, this is particularly advantageously possible because there are no disturbing elevations in contrast to the welding torches currently in use by the use of a brushless external rotor motor and its special arrangement.
    The invention will be explained in more detail with reference to the accompanying drawings. Show:
    1 shows a manual welding torch with the inventive arrangement of the drive unit in a partially sectioned side view.
    2 shows the burner handle of the manual welding torch according to FIG. 1 in a partially sectioned side view;
    3 shows the burner handle of the manual welding torch according to FIG. 1 in a partially sectioned front view; and FIG. 4 shows the burner handle of the manual welding torch according to FIG. 1 in a partially sectioned plan view.
    1 shows a manual welding torch 1 with the arrangement of the drive unit 12 according to the invention. The manual welding torch 1 has a burner housing 2 with a grip area 3. This is a standard handle shell, which has no unfavorable elevations or protrusions, as they are common in the existing hand welding torches with integrated wire feed unit. About a screw 6 of the pipe bend 4 is screwed with the gas nozzle 5 directly to the burner housing 2. The consumable welding wire 9 is guided via a wire core 7 in the burner housing 2 and further through the pipe bend 4 to the gas nozzle 5 and exits at this point from the manual welding torch 1. The welding wire 9 is driven by a wire feed unit 10 integrated in the burner housing 2, which comprises a drive unit 12, a gear stage 19, a drive roller 14 with a rotation axis 17 and a counter roller 15 with a rotation axis 18. The drive roller 14 and the counter roller 15 form the conveyor rollers eleventh
    The drive unit 12 is in communication with a wire feeder, which is placed substantially at a welding machine. The manual welding torch 1 is connected via a hose package 8/17 8 with the welding machine. In a push-pull system, the drive unit 12 contained in the burner housing 2 takes over the pull function and the wire feeder in the welding device, the push function for the promotion of the welding wire 9. The regulation for the wire feed takes over the welding machine, with a torch button 8 in the regulation is integrated. The burner button 8 is arranged on the lower side of the burner housing 2 below the grip area 3. Before the torch button 8, the drive unit 12 is arranged in a receptacle in the burner housing 2 in alignment with the torch button 8. In the illustrated embodiment of the manual welding torch 1, the torch trigger 8 is pulled or pressed in an operation from bottom to top, ie the actuation takes place in the vertical direction to the conveying direction 16 of the welding wire 9. This movement direction simultaneously forms the reference for all subsequent position descriptions of axes or the like , In this sense, therefore, a vertically arranged axis is an axis which is arranged from top to bottom, as long as the manual welding torch 1 is kept horizontal, that is, the conveying direction 16 of the welding wire 9 is arranged horizontally. The axis of rotation 13 of the drive unit 12 is arranged in alignment with the conveying axis 16 of the welding wire 9, that is, in the middle of the manual welding torch 1. The rotational movement of the axis of rotation 13 of the drive unit 12 is transmitted to the axis of rotation 17 of the drive roller 14 via the gear stage 19 acting in the horizontal direction.
    From Fig. 2, the arrangement of the wire feed unit 10 in the burner housing 2 of the manual welding torch 1 can be seen. The axis of rotation 13 of the drive unit 12 as well as the axis of rotation 17 of the drive roller 14 and the axis of rotation 18 of the counter roller 15 are arranged vertically to the conveying axis 16 of the welding wire 9. The axis of rotation 13 of the drive unit 12 does not coincide with the axis of rotation 17 of the drive roller 14 or with the axis of rotation 18 of the counter-roller 15, which are laterally offset to the conveying axis 16, ie left and right of the conveyor axis 16, respectively. The side surface 21 of the drive unit 12 are adjacent to the front end 20 of the burner housing 2, that is arranged in front of the screw 6. This is relevant in terms of weight savings, miniaturization and grip ergonomics. 9/17 9
    The drive unit 12 is arranged adjacent to the burner button 8 between the front end 20 of the burner housing 2 and the burner button 8. In this special positioning is also an essential difference to see the systems in use so far, which have a horizontally arranged axis of rotation 13 of the drive unit 12.
    Fig. 2 also shows how the drive unit 12 and gear 19 are arranged to save space. Advantageously, a toothing 22 is arranged on the axis of rotation 13 of the drive unit 12, which engages directly in a first Zwischenzadverzahnung 23 of a Zwischenradelements. The Zwischenradelement acts as an intermediate stage for the transmission of power to the axis of rotation 17 of the drive roller 14 by a arranged above the first Zwischenradverzahnung 23 Zwischenradverzahnung 24 of the Zwischenradelements engages in a drive roller teeth 25 of the rotation axis 17 of the drive roller 14, whereby it is driven at the desired speed and ultimately the Welding wire 9 promotes. It is particularly advantageous in this case if the intermediate wheel element is mounted in the housing of the drive unit 12, whereby the space requirement can be minimized. Thus, it is in the gear stage to a two-stage spur gear, which by the applied gear ratio or the arrangement of the spur gears (teeth 22 to 25) to each other, an extremely high efficiency of over 90%. The size or the diameter of the teeth 22 to 25 is adjusted accordingly to the required speed of the drive roller 14.
    FIG. 3 shows the burner housing 2 of the manual welding torch 1 according to FIG. 1 in a partially sectioned front view. Good to see here again the arrangements of the rotation axis 13 of the drive unit 12, the rotation axis 17 of the drive roller 14 and the rotation axis 18 of the counter roller 15 vertical to the conveying axis 16 of the welding wire 9. The axis of rotation 13 of the drive unit 12 is arranged in alignment with the conveying axis 16, whereas the axis of rotation 17 of the drive roller 14 and the axis of rotation 18 of the counter-roller 15 are arranged offset laterally to the conveying axis 16 left and right. As a result, a central arrangement of the wire feed unit 10 in the burner housing 2 of the hand welding 10/17 10 ners 1 is given. The axis of rotation 17 of the drive roller 14 or the axis of rotation 18 of the counter roller 15 are parallel, but spatially offset, arranged to the axis of rotation 13 of the drive unit 12.
    4 shows the burner housing 2 of the manual welding torch 1 according to FIG. 1 in a partially sectioned plan view. The axis of rotation 13 of the drive 12 and the axes of rotation 17 and 18 of the drive roller 14 and counter roller 15 are positioned in a symmetrical to the conveying axis 16 triangle. This arrangement is essential since only thereby the arrangement of the wire feed unit 10 in a standard handle of a manual welding torch 1 is made possible. The triangular shape is designed such that, starting from the axis of rotation 13 of the drive unit 12, which forms the front tip of the triangle and is arranged immediately behind the screw 6, the axis of rotation 17 of the drive roller 14 and the axis of rotation 18 of the counter roller 15 in the direction of the rear end of the burner housing 2 are positioned. Immediately to the axes of rotation 17, 18 of the drive roller 14 and counter roller 15 of the torch button 8 is arranged, which includes the wire feed unit 10 on one side. The burner button 8 is arranged in alignment with the axis of rotation 13 of the drive unit 12 and the horizontally arranged above conveying axis 16 of the welding wire 9. The entire wire feed unit 10 is thus arranged between the burner button 8 and the front end 20 of the burner housing 2. Thus, the grip area 3 of the burner housing 2 heats only slightly due to the heat generated by the drive unit 12, since both the torch button 8 and the conveyor rollers 11 are arranged therebetween. As a result, a temperature increase in the grip region 3 of the manual welding torch 1 is at least reduced, whereby the welder is not impaired in handling. 11/17
    权利要求:
    Claims (9)
    [1]
    A manual welding torch (1) for arc welding with a consumable welding wire (9), with a wire feed unit (10) arranged inside a burner housing (2) with a grip area (3) for conveying the welding wire (9) along a conveying axis (16 ), which wire feed unit (10) has a drive unit (12) with a rotation axis (13) arranged vertically to the feed axis (16) of the welding wire (9), a drive roll (14) with a rotation axis (17) and a counter roll (15) with a A rotation axis (18) includes, and with a torch probe (8), characterized in that the wire feed unit (10) has a gear stage (19), and the axis of rotation (13) of the drive unit (12) in alignment with the conveying axis (16) of the welding wire (9) is arranged.
    [2]
    2. Hand welding torch (1) according to claim 1, characterized in that the axis of rotation (17) of the drive roller (14) and the axis of rotation (18) of the counter roller (15) are arranged vertically to the conveying axis (16) of the welding wire (9).
    [3]
    3. Hand welding torch (1) according to claim 1 or 2, characterized in that the wire feed unit (10) outside the handle portion (3) of the burner housing (2) is arranged.
    [4]
    4. Hand welding torch (1) according to one of claims 1 to 3, characterized in that the conveying axis (16) of the welding wire (9) above the drive unit (12) and the burner key (8) is arranged.
    [5]
    5. manual welding torch (1) according to one of claims 1 to 4, characterized in that the drive unit (12) between a front end (20) of the burner housing (2) and the burner key (8) is arranged.
    [6]
    6. Hand welding torch (1) according to one of claims 1 to 5, characterized in that the axis of rotation (17) of the drive roller (14) and the axis of rotation (18) of the counter roller (15) in the direction of the conveying axis (16) of the welding wire (9 ) are arranged offset laterally and the axis of rotation (18) of the counter-roller (15) and 12/17 12 the axis of rotation (13) of the drive unit (12) in a to the conveying axis (16) of the welding wire (9) symmetrically arranged triangle are arranged.
    [7]
    7. manual welding torch (1) according to one of claims 1 to 6, characterized in that the drive unit (12), the axis of rotation (17) of the drive roller (14) and the gear stage (19) are designed as a common unit.
    [8]
    8. manual welding torch (1) according to one of claims 1 to 7, characterized in that the gear stage (19) is designed as a two-stage spur gear.
    [9]
    9. manual welding torch (1) according to one of claims 1 to 8, characterized in that the drive unit (12) is designed as a brushless external rotor motor. 13/17
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    同族专利:
    公开号 | 公开日
    DE102014216508A1|2015-03-12|
    CN104439626B|2017-04-12|
    US20150069040A1|2015-03-12|
    US9764412B2|2017-09-19|
    AT514316B1|2014-12-15|
    DE102014216508B4|2020-11-12|
    CN104439626A|2015-03-25|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50578/2013A|AT514316B1|2013-09-12|2013-09-12|Manual welding torch for arc welding|ATA50578/2013A| AT514316B1|2013-09-12|2013-09-12|Manual welding torch for arc welding|
    DE102014216508.3A| DE102014216508B4|2013-09-12|2014-08-20|Hand welding torch for arc welding|
    CN201410458134.8A| CN104439626B|2013-09-12|2014-09-10|Handheld welding torch for electric-arc welding|
    US14/483,323| US9764412B2|2013-09-12|2014-09-11|Handheld welding torch for electric-arc welding|
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