• 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 holding device for holding a wire blank in a working position in a bending machine, the holding device comprising a base part with a seat having a semi-circular recess for the wire, against which the wire is held during bending, a holding part having a semi-circular recess is switched between a holding position pre-holding the wire and at least one releasing position in which the wire can be moved relative to the seat, and a drive mechanism driven by a drive motor to effect the adjustment movement, and wherein the holding member is arranged to move towards and from the seat with the adjusting member. front, outer end of a drive arm included in the drive mechanism, where the drive arm is suspended in the drive mechanism at its inner end and where the holder part is supported by a sliding surface (20) fixed in the base part which cooperates with a movable sliding surface on the holder part (6). The advantage of the invention is that a single holding of a wire in a bending machine is made possible, which at the same time allows a rapid release of the wire so that a fast and reliable bending process is obtained. (Fig. 1)
    公开号:SE1050480A1
    申请号:SE1050480
    申请日:2010-05-17
    公开日:2011-11-18
    发明作者:Bengt Forsberg
    申请人:Bengt Forsberg；
    IPC主号:
    专利说明:

    Fig. 3 is a partially broken side view of the holding device in holding position, and Fig. 4 schematically shows a bending machine, provided with the holding device according to the invention.
    PREFERRED EMBODIMENT The holding device 1 shown in Figs. 1, 2 and 3 is intended to hold an object 2, such as a wire or a wire blank, in a bending machine during the bending process itself. The holding device 1 is mounted in the bending machine on a laterally movable carriage, which means that the holding device can move laterally to the different bending positions on the wire. The wire is held by a centrally located center holder which can also rotate the wire around its longitudinal axis if necessary. The longitudinal direction of the wire is oriented in the x-direction, in which the center axis of the wire also 3 runs. In the exemplary embodiment shown, the holding device 1 is mounted together with a bending tool which also comprises a bending unit is formed. In the example shown, the bending pad does not include a bending pad and a bending resistance, so that a bending element for bending the wire.
    When the bending process is performed, the holding device can quickly release the wire so that it moves sideways to the bending position. The holding device 1 comprises a base part 5 which is fixed to the bending unit can next be mounted on the body 4 of the holding device, and a holding part 6 which is movable between a holding position where the wire 2 is held, and several releasing positions, where the wire in a released position is released but held in place and where the wire in another released position can be inserted into and removed from the holding device.
    The holder part 6 consists of a front part of a drive arm 10. The holder part 6 cooperates with a seat 7 fixedly mounted on the base part 5 which has a semi-circular recess 8 directed forwards, which is intended as a support surface for the wire 2. The front part of the holder part is formed with a hook-shaped projection so as to form a semicircular recess 9, which faces the seat 7. The holder part 6 is intended to perform a main movement in the direction of the seat 7, i.e. in the y-direction, to achieve the holding position. With a movement in the opposite direction from the seat 7, the holder part reaches the releasing position. During this movement, the holder part will also perform a small movement in z-direction so that the front, lower edge 24 of the holder part ends up above the wire in height when the holder part is in an outer releasing position. In the holding position, the recess 8 of the seat and the recess 9 of the holder part are positioned in the same plane. The recess 9 of the holder part is substantially semicircular with a radius slightly larger than the wire material and the recess 8 of the seat constitutes a smaller part of a semicircle, also with a radius slightly larger than the wire material. This means that the wire will be clamped between the surfaces of the recesses when the holder part is in the holding position.
    The movement of the holder part is effected by the drive arm 10 being moved substantially forwards and backwards, i.e. along the y-axis. This movement is obtained by a drive mechanism 11, which consists of a drive motor 12. In this example, the drive motor is of the rotary type, e.g. an electric motor, a pneumatic motor or a hydraulic motor with a gear 13 and an eccentric mechanism in the form of an eccentrically arranged drive pin 14 on a wheel 15.
    The drive arm 10 is arranged to transmit large forces, however with some flexibility to compensate for tolerances, and is, as best seen in Fig. 1, strongly made of, for example, solid square steel of a slightly resilient material type, such as capercaillie steel. The drive arm is formed with a substantially straight horizontal portion 16 which is arranged substantially in the y-direction, an arcuate portion 17 and a shorter vertical portion 18 which is arranged in the z-direction. The drive shaft terminates in a hub portion 19 having a central hole which forms the bearing point for the drive pin 14. As a result, the rotational movement of the drive motor will be transmitted to a substantially reciprocating movement of the drive arm 10, the holder part and its recesses 9 moving between the holding position and the releasing the positions of the wire 2. Depending on the rotation of the wheel 15 and thus on the movement of the drive arm, the holder part and its recess 9 can assume four fixed positions, partly a holding position, partly an internal releasing position where the wires can be rotated and displaced relative to the holder part is poured into place, partly an outer releasing position where the trees can be inserted in and removed from the pouring device in a direction transverse to the longitudinal direction of the trees, and partly an outer end position where the drive arm 10 can be easily replaced to a drive arm with a holder part 9 for another tree dimension. It is also possible to fasten the holder part to the drive arm with a fastening element in order in this way only having to change the holder part when changing the tree dimension.
    The drive arm 10 is thus suspended in its rear or inner end in the drive pin 14 and is supported at its front or outer end, i.e. at the holder part, of at least one upwardly directed fixed sliding surface 20 on the base part 5, the holder part having a movable sliding surface 21 directed downwards towards the fixed support surface. is directed mainly leaky and intact, respectively and y-led. between inner releasing The movement to the outer releasing position also involves a lifting movement of the holder part in z-direction so that the recess 8 of the seat 7 becomes freely accessible straight from the front to facilitate insertion of a new tree ready-bent tree. This is achieved in that the holder part is formed with an angled portion 22 which cooperates with a corresponding solid surface 23 on the base part or against at least one edge of the fixed sliding surface 20. In order to be able to insert or remove a tree straight from the front, the lower edge of the holder part should be removed. of a 24 in the front releasing position be raised to a level which lies above the upper edge of the recess 8 on the seat 7. Advantageously, the distance in height between the lower edge 24 of the holder part and the upper edge of the recess 8 is of the order of a tree diameter, which is illustrated in Fig. 1 In this way, a tree can be inserted into or removed from the bending hob in a safe manner even if it is slightly bent, which is often the case when long trees are to be bent.
    In order for the drive arm 10 to be able to absorb large forces in the longitudinal direction of the trees, i.e. in the x-direction, it is advantageous for the drive arm to be supported laterally by opposite support surfaces on the bending bracket which in the holding-on position can absorb the tensile forces acting on the wire, and which thereby act laterally on the drive arm 10, e.g. a bending moment. According to an advantageous embodiment, the frame has a lateral guide for the drive arm 10 in the form of a side wall 26 which cooperates with a support lug 27 on the holder part 6. The support lug and the side wall are advantageously designed so that the opposite support surfaces are active, i.e. cooperates in at least the restraining position but also in the two releasing positions. However, it is advantageous that they do not cooperate in the extreme position, i.e. in the end position, but those in the end position are so mutually offset that they are free from each other. This allows the drive arm to be removed with a side motion. As a result, the drive arm can easily be exchanged for another drive arm, usually when the holder part and thus the drive arm is to be adapted to a different tree dimension. If the holder part is detachably attached to the drive arm, the support surfaces can also cooperate in the end position. The mechanism is designed in such a way that the drive arm is allowed to be pulled off from the pin when the holder part is in the end position, but not in any of the operating positions. In other positions, the arm is blocked against peeling off either the support surfaces and / or another locking part. A simple pulling and fitting of the drive arm is an important feature as the bending holder must be adapted for different wire dimensions.
    Fig. 3 shows the holder part with the recess 8 in its outer, elevated releasing position. lines show the recess 8 of the holder part and the surface of the recess 9 of the seat.
    The changeover from releasing position to holding position takes place by the drive motor 12 rotating the rotating mechanism in Fig. 2 counterclockwise, which means that the drive arm 10 is pulled backwards until the holding position is assumed. Because the drive arm 10 is designed as an angular arm with an arcuate portion and because the arm is made of a high-strength material with a high degree of rigidity, but still with a certain elasticity, i.e. resilience, it is ensured that the wire is held securely without causing damage to the wire or with unnecessary stresses in the mechanism, by the drive arm exhibiting a certain elasticity, above all in the arcuate portion 17 but also in the straight portions 16 and 18. This means that a certain prestress can be applied by the holding part against the wire 2 in the seat 7. By adjusting the angle of the drive pin 14 in the holding position, a high gear ratio of the power transmission from the drive motor in the holding position is obtained.
    The internal release position deviates slightly from the restraint position. The distance between the positions in the y-direction is advantageously smaller than one wire diameter, so that the holding force on the trees ceases and the wire is free to be rotated around its longitudinal direction or displaced in its longitudinal direction. At the same time, the thread is held in place laterally, i.e. in y-direction and z-direction during rotation and displacement.
    Fig. 4 shows a work table 28 or equivalent in a bending machine for bending an object 2 such as a wire or a wire blank by means of bending tools. The bending machine shown comprises two holding devices 1, two bending tools 29 and a central, fixed center holder 30. Similar bending tools are known to the person skilled in the art and are not described in more detail. In the example shown, the bending tools are integrated with the pouring devices into a bending unit, the holding device 1 according to the invention described above being included in the machine and serving as a holder for the wire 2 during its bending. The center holder 30 is intended both to hold the wire when the bending units move sideways in the bending machine when the pouring devices are in the inner releasing position and also to turn the wire about its longitudinal axis. The bending units are movably mounted on a carriage or the like and can be moved in the longitudinal direction of the wire to selected positions along the wire, where bending should take place in a relative direction selected by the rotational position of the wire selected by the center holder for each bending.
    The holding device 1 has a reliable and simple construction, which can be achieved at a low cost. Furthermore, it is easily accessible when the holding device is to be adapted for different wire blanks and in the event of maintenance and adjustment. Because bending can be performed in the vicinity of the pouring device, the working operation becomes stable. The operating problems that often occur with known devices due to lack of space, is completely eliminated when using the pouring device 1 according to the invention.
    Without exceeding the scope of the inventive idea, modifications of the device according to the invention should be possible. The pouring device is thus not limited to what has been shown and described in connection with the exemplary embodiment but only by the appended claims. For example, the drive arm can be designed with a circular cross-section where the pouring part is designed for lifting action in the outer releasing position and with lateral support.
    The drive motor can also be a linear motor, e.g. a hydraulic cylinder acting on the drive arm which may be straight, whereby a suitable resilience can be achieved by selecting suitable properties of the drive motor.
    权利要求:
    Claims (5)
    [1]
    Holding device (1) for holding an elongate object (2), such as a wire blank, in a working position in a working machine for processing or processing the object in one or more working operations, the holding device (1) comprising a base part (5) comprising a seat (7) with a sub-circular recess (8) for the object (2) against which the object is held during the work operations, a holder part (6) with a sub-circular recess (9), the holder part (6) being arranged to be switched between a holding position for holding of the object (2) and at least one releasing position in which the object (2) can be moved relative to the seat (7), and a drive mechanism (11) for effecting the adjustment movement driven by a drive motor (12), characterized in that the holder part ( 6) is arranged to move towards and away from the seat with the adjustment movement, that the holder part (6) is arranged on the front, outer end of a drive arm (10) included in the drive mechanism, that the drive arm (10) is suspended ngd in the drive mechanism at its inner end and that the holder part (6) is supported by a sliding surface (20) fixed in the base part (5) which cooperates with a movable sliding surface (21) on the holder part (6).
    [2]
    Holding device according to claim 1, characterized in that the drive motor (12) and the driving mechanism (11) are arranged to switch the holding part between two different releasing positions, where an inner releasing position enables a lateral displacement and a rotation of the wire in the seat (7), and where an outer releasing position enables a movement of the object (2) to and from the seat (7).
    [3]
    Holding device according to claim 1, characterized in that the drive arm (10) has a horizontally lying portion (16) in the front end of which the holding part (6) is arranged, and a vertically standing portion (18) which is coupled to a member included in the drive mechanism. eccentric mechanism, which are connected by an arcuate portion (17), the arcuate portion being arranged to create a rigid, but at tensile load on the drive arm (10) in the holding position slightly resilient, transition between the drive device (12) and the holding part (6).
    [4]
    Holding device according to claim 3, characterized in that the base part (5) and the drive arm (10) have cooperating portions with mutually opposite side support surfaces (26, 27), which are directed and positioned so that in the holding position they can absorb the tensile forces which acts on the holder part (6) laterally.
    [5]
    Holding device according to claim 4, characterized in that the drive arm (10) is adjustable to an outer end position, in which the opposite support surfaces are mutually offset so that they do not cooperate, but allow removal of the drive arm laterally for, for example, switching to another drive arm.
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    同族专利:
    公开号 | 公开日
    JP5746327B2|2015-07-08|
    EP2571638A1|2013-03-27|
    CN102917814B|2015-04-22|
    CN102917814A|2013-02-06|
    JP2013527035A|2013-06-27|
    SE534834C2|2012-01-17|
    WO2011144562A1|2011-11-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3627502C2|1986-08-13|1995-06-14|Schwarze Rigobert|Pipe bending machine|
    JPH0829378B2|1987-01-28|1996-03-27|株式会社森田鉄工所|Tal coil spring manufacturing equipment|
    US4870849A|1987-09-25|1989-10-03|Eaton Leonard Technologies, Inc.|Method for tube bending with controlled clamp die arrangement|
    IT1220843B|1988-02-26|1990-06-21|Omes Officina Meccanica Di E S|DOUBLE BENDING MACHINE FOR BUILDING IRONS.|
    JPH02118628U|1989-03-03|1990-09-25|
    JPH08174121A|1994-12-27|1996-07-09|Toyo Kensetsu Koki Kk|Bending method of reinforcing bar material|
    JP4002465B2|2002-04-24|2007-10-31|丸昭機械株式会社|Wire material bending machine|
    JP2004249322A|2003-02-20|2004-09-09|Shindai:Kk|Method and device for bending wire|
    CN2629861Y|2003-07-26|2004-08-04|张家港和丰机械制造有限公司|Clamping device for pipe bending machine|
    ITRM20040402A1|2004-08-05|2004-11-05|Cml Int Spa|VICE FOR LOCKING AN ELONGATED ELEMENT TO BE CURVED ON A BENDING MACHINE MATRIX.|
    CN201132183Y|2007-12-10|2008-10-15|浙江金马逊机械有限公司|Collision-avoiding clamping mechanism for pipe bender|
    SE534218C2|2009-10-20|2011-06-07|Bengt Forsberg|Holding device for holding an object such as a thread blank|
    法律状态:
    2014-01-02| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050480A|SE534834C2|2010-05-17|2010-05-17|Holding device for holding a thread blank|SE1050480A| SE534834C2|2010-05-17|2010-05-17|Holding device for holding a thread blank|
    EP11719284A| EP2571638A1|2010-05-17|2011-05-16|Holder device for securing a wire blank|
    JP2013510578A| JP5746327B2|2010-05-17|2011-05-16|Holder device for fixing wire material|
    CN201180024267.9A| CN102917814B|2010-05-17|2011-05-16|Holder device for securing a wire blank|
    PCT/EP2011/057866| WO2011144562A1|2010-05-17|2011-05-16|Holder device for securing a wire blank|
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