• 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 device (1) for coring a cast workpiece, wherein the device (1) comprises at least one hammer (2, 3, 4), wherein the device (1) at least one adjusting means (5, 6) for adjusting a Impact frequency of the at least one hammer (2, 3, 4).
    公开号:AT517385A1
    申请号:T50494/2015
    申请日:2015-06-15
    公开日:2017-01-15
    发明作者:Dipl Ing Sumereder Stefan
    申请人:Fill Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for coring a cast workpiece, wherein the device has at least one hammer.
    Furthermore, the invention relates to a method for coring a cast workpiece with at least two hammers.
    For coring or sanding workpieces which have been produced by means of a casting process, the workpieces can be vibrated by impacts with a hammer and in this way the core can be crushed.
    A device or a method of the type mentioned are known, for example, from DE 10136713 A1.
    A disadvantage of the known solutions is, above all, that can be set in this type of construction no defined beat frequency of the hammer. This has the disadvantage that no optimal energy transfer to the destruction of the core is possible.
    It is therefore an object of the invention to overcome the above-mentioned disadvantages of the prior art.
    This object is achieved with a device of the type mentioned in accordance with the invention in that the device has at least one adjusting means for setting a beat frequency of the at least one hammer.
    The solution according to the invention makes it easy to set a defined beat frequency. A defined beat frequency is understood here to be a predetermined beat frequency. The beat frequency can be selected and adjusted as required. Thus, the invention makes it possible to freely select the beat frequency of the hammer in a wide band range and to realize an optimal and defined energy transfer to the core.
    To enable a simple and reliable actuation of the actuating means, it can be provided that the device has at least one actuator for actuating the at least one actuating means.
    According to an advantageous variant of the invention, the at least one hammer may be a pneumatic hammer.
    It has proven to be particularly favorable when the at least one adjusting member comprises at least one valve which is arranged between at least one compressor and a piston / cylinder unit of the pneumatic hammer.
    Urn when using a pneumatic hammer in a reliable manner to achieve a defined beat frequency, can by the at least one valve ab-alternately on different sides of a hammer head acting and ver-slidably mounted in a longitudinal direction of a working cylinder of the piston / cylinder unit rests areas of the working cylinder be connected to the compressor.
    A high impact frequency with a low mechanical load of the valve can be achieved by the fact that the at least one valve is designed as a rotary valve.
    In order to enable an adjustment or preselection of the beat frequency in a simple manner, it can be provided that the device has at least one controller connected to the at least one actuator for controlling a beat frequency of the at least one hammer and an input unit connected to the controller for inputting Has values for the beat frequency.
    The energy transfer to the workpiece can be optimized in that the device has at least two hammers according to one of claims 1 to 7 with mutually phase-shifted impact movements.
    The time required for coring can be significantly reduced by having a plurality of hammer coupled with each other in phase-shifted striking motions, with the percussion movements of each hammer being out of phase with each of the percussive movements of the other hammers.
    The abovementioned object can also be achieved with a method of the type mentioned at the outset by setting a beat frequency for each hammer in a step i) and a phase shift between striking movements of the at least two hammers in a step ii) Steps i) - ii) subsequent to step iii) the at least two hammers with the set beat frequency and phase shift perform a striking motion and destroy a core present in the workpiece.
    For a better understanding of the invention, this will be explained in more detail with reference to the following figures.
    In each case, in a highly simplified, schematic representation:
    Fig. 1 is a block diagram of a device according to the invention;
    FIG. 2 shows a hammer from FIG. 1 with a rotary valve in more detail; FIG.
    3 shows a cross section of the hammer and the valve of Figure 2 in a first switching position of the rotary valve.
    Fig. 4 shows a cross section of the hammer and the valve of Fig. 2 in a second switching position of the rotary valve.
    By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same part designations, wherein the revelations contained in the full description can be applied mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and these position information in a change in position mutatis mutandis to transfer to the new location.
    1, a device 1 for coring a cast workpiece piece one or more hammer 2, 3, 4. Furthermore, the device 1 has one or more adjusting means 5, 6 for setting a striking frequency of the hammer 2, 3, 4. The hammer 2, 3, 4, may be fixedly mounted and, for example, act on a clamping plate, not shown here, on which the workpiece is clamped, and put them in vibration. Alternatively, the hammers can also act directly on the workpiece. As a result of the energy transferred by the hammering 2, 3, 4, a mold core, usually made of sand, of the workpiece is smashed. For actuating the actuators 5, 6, an actuator 7 may be provided. The actuator may be, for example, an electromechanical actuator, in particular in the form of an electric motor with controllable speed.
    As is apparent from Fig. 2. can be used as a hammer 2, 3, 4 a pneumatic hammer 9 are used. The adjusting member 5, 6 used to control the pneumatic hammer 9 may comprise a valve 8 which is arranged between a compressor provided with reference number 10 in FIG. 1 and a piston / cylinder unit 11 of the pneumatic hammer 9.
    Through the valve 8 can alternately on different sides of a hammer head 12 acting and in a longitudinal direction of a Arbeitszylin-ders 13 of a piston / cylinder unit 11 of the pneumatic hammer 9 slidably ge-mounted percussion piston 14 located areas of the working cylinder 13 are connected to the compressor 10.
    The valve 8 is, as shown in FIGS. 3 and 4, particularly preferably a rotary valve. The rotary valve may have a valve body through which the valve body is surrounded by a valve jacket. In the valve sleeve openings 17, 18, 19, 20 are arranged, which can be brought into coincidence with the outlets of the channels of the valve body. The valve body can sit on a shaft which is driven by means of the actuator 7. By the rotation of the valve body, the channels are alternately connected to the opening 19 of the valve 8 connected to the compressor 10 and to the openings 17 and 18 of the valve 8. The opening 20 of the valve 8 is used for ventilation and can be connected to the environment. The openings 17 and 18 of the valve 8 are connected to the two openings 21 and 22 of the piston / cylinder unit 11.
    In the upper position of the valve 8 in FIG. 2, which corresponds to the position of the valve 8 shown in FIG. 3, air is forced from the compressor 10 via the opening 21 into the working cylinder 13 of the piston / cylinder unit 11 and the percussion piston 14 in the direction the hammer head 15 moves. The opening 22 of the working cylinder 13 is in this case connected via the openings 18 and 20 of the valve 8 for venting a lying between the percussion piston 14 and the hammer head 15 portion of the working cylinder 13 with the environment.
    In the lower position of the valve 8 in FIG. 2, which corresponds to the position of the valve 8 shown in FIG. 4, the opening 22 of the working cylinder 13 is connected to the compressor 10 and the percussion piston 14 is moved away from the hammer head 15 by the compressed air. The opening 21 of the working cylinder 13 is in this case connected via the openings 17 and 20 of the valve 8 for venting a between the percussion piston 14 and a hammer head 15 opposite end wall of the working cylinder 13 located portion of the working cylinder 13 with the environment. The direction of movement of the percussion piston 14 is indicated in Figures 3 and 4 by arrows. The rotational speed of the shaft, on which the valve body is seated, in this case, the beat frequency of the hammer head 15 before. Between the two openings 21 and 22 of the working cylinder 13, a further, serving for ventilation opening 23 may be provided.
    As can be seen from Fig. 1, when using a plurality of hammers 3, 4, a single valve 8 can be used to control them, the number of openings 17-20 in the valve jacket and the channels in the valve body and the length of the valve body correspondingly must be increased. Alternatively to the arrangement of a long valve body in the case of using a single valve 8 for controlling a plurality of hammers 3, 4 but also several single-ne valve body can be arranged on the shaft driven by the actuator 7 test.
    If a plurality of hammers 2, 3, 4 are controlled by a valve 8, then the individual hammers 2, 3, 4, associated channels in the valve body or the valve bodies may be arranged so that a fixed phase offset between the beat movements the hammer 2, 3, 4 results. The hammers 2, 3, 4 move in this arrangement with the same frequency and phase shifted with a fixed phase offset to each other.
    For controlling a beat frequency of the hammer 2, 3, 5, the device may include a controller 15 connected to the actuator 5, 6, for example a suitably programmed processor, and an input unit 16 connected to the controller, for example a keyboard, for inputting values for the beat frequency.
    In the method according to the invention, a beat frequency is determined for each hammer in a step i) and a phase shift between hammer strokes is determined in a step ii). In a step i) - ii) in the following step iii) perform the hammer 2, 3, 4 with the set beat frequency and phase shift a flapping motion and destroy a present in the workpiece core.
    As already mentioned above, the selection of the frequency can take place by means of a corresponding input unit 16. The determination of the phase offset can be done by a corresponding arrangement of the valve body on the shaft connected to the actuator 7 or a corresponding arrangement of the channels. Alternatively, however, a plurality of valves 8 with a corresponding phase offset of the openings 17, 18, 19, 20 may be provided.
    For the sake of order, it should finally be pointed out that, for a better understanding of the structure of the device according to the invention, these or their components have been shown partly unevenly and / or enlarged and / or reduced in size.
    REFERENCE SIGNS LIST 1 Apparatus 2 Hammer 3 Hammer 4 Hammer 5 Adjusting means 6 Adjusting means 7 Actuator 8 Valve 9 Pneumatic hammer 10 Grain compressor 11 Piston / Cylinder unit 12 Hammer head 13 Working cylinder 14 Impact piston 15 Control 16 Input unit 17 Opening 18 Opening 19 Opening 20 Opening 21 Opening 22 Opening 23 Opening
    权利要求:
    Claims (10)
    [1]
    claims
    1. Device (1) for coring a cast workpiece, wherein the device (1) at least one hammer (2, 3, 4), characterized marked in that the device (1) at least one adjusting means (5, 6) for setting a beat frequency of the at least one hammer (2, 3, 4).
    [2]
    2. Apparatus according to claim 1, characterized in that it comprises at least one actuator (7) for actuating the at least one actuating means (5, 6).
    [3]
    3. Device according to claim 1 or 2, characterized in that the at least one hammer (2, 3, 4) is a pneumatic hammer (9).
    [4]
    4. The device according to claim 3, characterized in that the at least one actuator (5, 6) comprises at least one valve (8) that between at least one compressor (10) and a piston / cylinder unit (11) of the compressed air hammer (9 ) is arranged.
    [5]
    5. Apparatus according to claim 3, characterized in that by the at least one valve (8) alternately on different sides of a hammer head (12) acting and in a longitudinal direction of a Arbeitszylin-ders (13) of the piston / cylinder unit (11) displaceable mounted impact piston (14) located areas of the working cylinder (13) with the compressor (10) are connected ver.
    [6]
    6. Apparatus according to claim 4, characterized in that the at least one valve (8) is designed as a rotary valve.
    [7]
    7. Device according to one of claims 1 to 6, characterized in that it comprises at least one with the at least one actuator (5, 6) connected control (15) for controlling a beat frequency of the at least one hammer and an input unit connected to the control (16 ) for entering values for the beat frequency.
    [8]
    8. The device according to claim 1, characterized in that it comprises at least two hammers (2, 3, 4) according to one of claims 1 to 7 with zueinan the phase-shifted impact movements.
    [9]
    9. Device according to one of claims 1 to 8, characterized in that the device (1) has a plurality of mutually phase-shifted impact movements coupled hammer (2, 3, 4), wherein the impact movements of each hammer (2, 3, 4) to each the striking movements of the other hammer (2, 3, 4) is out of phase.
    [10]
    10. A method for coring a cast workpiece with at least two hammers (2, 3, 4), characterized in that in a step i) for each hammer 2, 3, 4) a beat frequency and in a step ii) a phase shift between striking movements of the at least two hammers, wherein in one of the steps i) - ii), the at least two hammers 2, 3, 4) with the fixed beat frequency and phase shift execute a striking movement in the subsequent step iii) and one in the factory smash piece of existing core.
    类似技术:
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    同族专利:
    公开号 | 公开日
    AT517385B1|2019-02-15|
    EP3307459B1|2020-01-15|
    MX2017014896A|2018-04-26|
    CN107743424A|2018-02-27|
    WO2016201475A1|2016-12-22|
    EP3307459A1|2018-04-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH551849A|1972-04-12|1974-07-31|Bauer Karlheinz|HYDRAULIC HAMMER.|
    US5022309A|1989-08-17|1991-06-11|Ingersoll-Rand Company|Variable frequency control for percussion actuator|
    EP0838290A1|1996-09-27|1998-04-29|VAW mandl & berger GmbH|Apparatus for monitoring the decoring of castings|
    EP1040884A1|1999-04-02|2000-10-04|Fata Aluminium Division of Fata Group S.p.A.|Vibratory decoring machine|
    WO2010142730A1|2009-06-09|2010-12-16|Artimpianti S.N.C. Di Genre Walter E Botta Alberto|Decoring machine|
    EP2607025A1|2011-12-19|2013-06-26|Robert Bosch Gmbh|Pneumatic tool device|
    EP2774727A1|2013-03-04|2014-09-10|TMT -BBG Research und Development GmbH|Control of the operating frequency of a striking mechanism|
    FR2242204A2|1973-08-28|1975-03-28|Gesab Automation Betonherstell|Control valve for pneumatic piston tool - is square box with outlet on each face and rotary valve spindle|
    US4006783A|1975-03-17|1977-02-08|Linden-Alimak Ab|Hydraulic operated rock drilling apparatus|
    DE2658455C3|1976-12-23|1981-01-22|Fried. Krupp Gmbh, 4300 Essen|Pressure medium operated striking mechanism|
    DE2928870A1|1979-07-17|1981-02-12|Koehring Gmbh Bomag Division|MASS COMPENSATED PAMPING AND / OR BLOWING SYSTEM|
    DE4343589C1|1993-12-21|1995-04-27|Klemm Guenter|Fluid operated hammer|
    DE4419499A1|1994-06-03|1995-12-07|Interoc Vertriebsgesellschaft|Hydraulic impact device with infinitely variable number of impacts and impact energy|
    JP2000079460A|1998-09-04|2000-03-21|Uinberu:Kk|Striking device|
    US6557652B2|2000-05-18|2003-05-06|Guenter Klemm|Method for performing ground or rock work and hydraulic percussion device|
    CN2851766Y|2005-10-31|2006-12-27|江兮夏|Two-way makeshift valve|
    KR100986853B1|2008-04-29|2010-10-08|현대자동차주식회사|A hammering apparatus for removing a sand from a molded product of cylinder block|
    FR2954195A1|2009-12-23|2011-06-24|Fonderie Du Poitou Aluminium|Hammering process for performing disintegration of molding insert to extract fixed part with frame, comprises hammering the part using a hammer, and controlling efficiency of hammering in function of a specified information|
    JP5526289B2|2010-08-09|2014-06-18|エルジー・ケム・リミテッド|Battery pack with new structure|
    DE102011088958A1|2011-12-19|2013-06-20|Robert Bosch Gmbh|Pneumatic tool device for hand-held power tool e.g. drilling hammer, has switching valves that are provided for switching pressurization of operating elements and designed as rotary valve|
    CN204151771U|2014-10-17|2015-02-11|国家电网公司|The self-propelled roller-compactor of transformer station's ground|DE102017222702A1|2017-12-14|2019-06-19|Bayerische Motoren Werke Aktiengesellschaft|Method for coring castings|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50494/2015A|AT517385B1|2015-06-15|2015-06-15|Device for coring|ATA50494/2015A| AT517385B1|2015-06-15|2015-06-15|Device for coring|
    PCT/AT2016/050202| WO2016201475A1|2015-06-15|2016-06-15|Device for core removal|
    CN201680034984.2A| CN107743424A|2015-06-15|2016-06-15|Equipment for decoring|
    EP16741843.3A| EP3307459B1|2015-06-15|2016-06-15|Device for core removal|
    MX2017014896A| MX2017014896A|2015-06-15|2016-06-15|Device for core removal.|
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