EP2146823B1 - Verfahren zum betreiben eines motorisch betätigten handverpressgerätes - Google Patents

Verfahren zum betreiben eines motorisch betätigten handverpressgerätes Download PDF

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Publication number
EP2146823B1
EP2146823B1 EP08759675.5A EP08759675A EP2146823B1 EP 2146823 B1 EP2146823 B1 EP 2146823B1 EP 08759675 A EP08759675 A EP 08759675A EP 2146823 B1 EP2146823 B1 EP 2146823B1
Authority
EP
European Patent Office
Prior art keywords
pressing
time
pressure
intermediate position
return
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.)
Active
Application number
EP08759675.5A
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German (de)
English (en)
French (fr)
Other versions
EP2146823A2 (de
Inventor
Egbert Frenken
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.)
Gustav Klauke GmbH
Original Assignee
Gustav Klauke GmbH
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 Gustav Klauke GmbH filed Critical Gustav Klauke GmbH
Priority to PL08759675T priority Critical patent/PL2146823T3/pl
Priority to EP14151750.8A priority patent/EP2722133B1/de
Priority to EP17177348.4A priority patent/EP3243604B1/de
Priority to PL14151750T priority patent/PL2722133T3/pl
Publication of EP2146823A2 publication Critical patent/EP2146823A2/de
Application granted granted Critical
Publication of EP2146823B1 publication Critical patent/EP2146823B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/166—Electrical control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B21D39/048—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods using presses for radially crimping tubular elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/042—Hand tools for crimping

Definitions

  • the invention relates to a method for operating a motor-operated hand-pressing device according to the features of the preamble of claim 1.
  • Such methods for operating a pressing device are known. For example, be on the WO 99/19947 directed.
  • the pressing device known therefrom is hydraulically driven.
  • directly driven by electric motor such pressing devices are known.
  • pressing devices are known.
  • two compression jaws and only one be provided against a fixed counter-stop to be moved pressing jaw. See, for example US 5,727,417 ,
  • the invention has the object to be able to achieve the advantage of the intermediate position without having to intervene in similar operations, on the other hand specify a method for operating a pressing device, the achievement and in the simplest possible way Compliance with a certain pressure in a safe manner allows.
  • the release is not necessarily interrupted in the case of the aforementioned intermediate position even in such a case. But it can be interrupted.
  • the pressing device is variably usable, so that it (only) interrupts the release when suitably actuated at the intermediate position. Similar processes can always be carried out starting from the same intermediate position.
  • it may be provided in terms of operation technology, which is also explained below, that with regard to the respective interruption at the intermediate position no special operation is required, but if no more interruption at the intermediate position should take place, this - more preferably: once - is reached by a special operation of the device.
  • a special operation of the device ie in particular a special switch operation, an interruption of the press jaw release at the desired intermediate position, but not otherwise.
  • the storage of said measure or measured value always takes place during each pressing process. Regardless of whether the interruption is applied using this measure or not.
  • a first workpiece contact is determined and a path or time mark assigned to this first workpiece contact is detected.
  • the workpiece contact can basically be detected by a pressure sensor arranged, for example, in a pressing jaw.
  • the workpiece contact can continue, for example, by evaluating the motor current. As soon as there is a significant increase in the motor current, this can be interpreted as a workpiece contact.
  • the pressure of the hydraulic fluid can also be detected by means of a pressure sensor. Since the hydraulic fluid pressure due to the friction of the piston in the cylinder and the force of the return spring has an approximately linear pressure increase and pressure drop on the way back and forth of the piston, the actual position of the piston in the cylinder can be determined hereby also with a certain tolerance. In this respect, a pressure value measured over time can be converted into a displacement value and insofar as subsequently also explained with reference to a displacement value, are converted with respect to the position of the piston and thus ultimately the pressing jaws or used as an analog value for this purpose become.
  • the assigned position of the pressing jaws acting actuator can thus be detected and subsequently, after pressing, in the course of the release of the pressing jaws, then this measure can be made according to the interruption to achieve the intermediate position.
  • the addition to the travel, pressure or time measure can be between 0 and 50% of the measure, this bandwidth also including all intermediate values, in particular in 1/10% steps.
  • the addition may therefore be between 0 and 40.9% and 0 and 40.8% etc. But also between 0.1 and 50%, 0.2 and 50%, 0.3 and 50% and on the other hand also between 0.1 and 40.9%, 02 and 40.9%, 0.2 and 40.8 % etc. Of these values, 0 to 10% inclusive, in turn, is preferred as indicated.
  • a further possibility for determining the intermediate position is also given by the fact that the time from the workpiece contact to the completion of the compression is measured and the press jaw release after the passage of a measured time corresponding path, since the completion of the compression, is interrupted.
  • the interruption is thus (only) time-dependent, due to the given relationships (the return there is virtually no interference to be considered, so that a certain time since the beginning of the return corresponds quite accurately to a specific piston travel) the way is readily determinable (eg over a factor applied to the measured time).
  • the end of the compression itself will suitably be detected in a conventional manner. For example, due to the pressure drop and / or opening of a return or overload valve. If necessary, also only on the expiry of a certain period of time, for example measured since the beginning of the Verpresszyklus.
  • the intermediate position can be stored and, depending on a specific actuation or non-confirmation of the pressing device during the following pressing operations, the return is in each case carried out only up to the intermediate position.
  • This can be achieved, for example, by the fact that the interruption at the intermediate position takes place only as long as it is repeated, as a start key of the device remains pressed continuously.
  • the start button As soon as the start button is no longer pressed, the device then returns to its original start position.
  • the pressed start button can then nevertheless a shutdown of the engine, be it the hydraulic motor or the electric motor, after completion of the compression done.
  • the - further depressed start button then ensures that at the assigned intermediate position, the interruption of the return or the press jaw release takes place.
  • the interruption of the return at a desired location has the consequence that the pressing jaws or a movable pressing jaw with fixed counter-stop, only a maximum of such interruption associated, opening, then, when the interruption has occurred.
  • This may mean, for example, that a displacement on the same tubing to a further injection point is possible, but the complete removal of the device from the pipe in question is not possible.
  • a security aspect is given that the device, for example, can not fall down.
  • the travel and / or pressure and / or time measurement is detected according to a freely selected interruption. So as soon as, for example, by briefly tapping the shutter button for a pressing operation, an interruption occurs (see above-mentioned German patent application 10 2006 026 552 ) this associated distance and / or pressure and / or time measure (Zeitrnanna about regarding the time that has passed since the completion of the pressing process) can be detected and then take place at a next pressing operation at the same point the interruption automatically. It then only requires, for example by briefly pressing the start button, an initiation of the next pressing process, which then without any other operation is required, automatically ends at the selected intermediate position again. If you want to return to the starting position, this can be done by long pressing, double-pressing the start button or the like; depending on which "detection" on the device is preset or preprogrammed.
  • the displacement and / or pressure and / or time measurement can be detected according to a change in the operating rhythm. This can happen, for example, that up to the desired intermediate position, now starting with the start position (on the "way out” to a - first - pressing), by repeated short-term pressing a start button of the device, the advancement of the biasing member for the dies takes place. As soon as the desired intermediate position has been reached, the start button can be pressed continuously until the compression is completed. Then the start button can be released and the release of the pressing jaws then takes place automatically only up to the intermediate position. Pressing the start button again, whether with constant holding or only short-term operation, the next Verpressrhythmus runs accordingly in the same way.
  • the invention proposes that the reaching of the predetermined pressing force is checked by means of a pressure sensor detecting the pressure of the hydraulic medium becomes.
  • the above-mentioned pressure sensor can therefore also be used in this context.
  • the check can be carried out in detail, for example, by a comparison between a predetermined minimum pressure value and an actually achieved pressure value. If, for example, the compression should have reached at least a pressure value of 500 bar, this value can be preset as a minimum pressure value and compared with a pressure value reached, for example 600 bar or 650 bar. As long as the difference between the actually achieved pressure value and the predetermined pressure value is positive, such a compression can be considered to be in order.
  • such a pressure sensor can also be used to check by means of the pressure detection a desired automatic opening of the return valve.
  • a desired automatic opening of the return valve By storing corresponding curves corresponding to a complete pressing operation, the actual setting and function of the automatically opening return valve can be checked for the large pressure drop occurring upon automatic opening of the return valve.
  • a corresponding value storage can be used during maintenance work to set the return valve without having to actually perform an actual pressurization.
  • the provision of the pressure transmitter can be used to that by setting a pressure threshold, which is below a to be reached for the completion of a press cycle maximum pressure, a stop of the moving member is performed to achieve a pressure maintenance.
  • the maximum pressure would be in the case of the automatically opening return valve correspond to the triggering pressure set with respect to the return valve.
  • the pressure threshold value is selected correspondingly below the release pressure of the return valve in this case.
  • the pumping operation can then be continued.
  • the predetermined actuation of the trigger switch can proceed accordingly automatically and take place after expiration of a, optionally freely selectable, period of time from stopping the engine after reaching the pressure threshold.
  • a repeated actuation under pressure that is to say at the approximately predetermined pressure threshold
  • the return valve is opened at the same time as the second actuation, since then the pressurization desired for this treatment purpose is achieved and a repeated pressure increase until the automatic opening of the return valve (in the usual cycle) is no longer needed.
  • a hydraulic pressing device 1 with an electric motor 2, a hydraulic fluid reservoir 3, a pump assembly 4 and a plunger 5, which is directly connected to a pressing jaw 6.
  • the electric motor 2 is operated in the embodiment via stored in an accumulator 7, not shown in detail electrical energy.
  • the electric motor 2 will begin to run on the operation of the switch 8 and accordingly by means of Pump 4 pumped from the hydraulic fluid reservoir 3 in the hydraulic cylinder 9 hydraulic fluid, whereupon the hydraulic piston 5 together with the pressing jaw 6 from the in Fig.1 shown starting position in the in Fig. 2 moved shown pressing position.
  • a current sensor may be provided, which detects a current profile over the path of the hydraulic piston 5, as it qualitatively in the FIGS. 10, 11 is shown.
  • the Fig. 10 in this case relates to a hydraulic pump of conventional design or the qualitatively quite fundamental course of the current curve.
  • the Figure 11 relates to the course of the current curve in a two-stage hydraulic pump, but not exactly reproduced here, but qualitatively represented. Especially such a two-stage hydraulic pump as that from the EP 0 927 305 B1 is known.
  • a very high current pulse is initially detected.
  • a practical value is here, for example, at 80 amps.
  • This current value decays very quickly with the starting up of the electric motor, to a value which is only slightly above the no-load current of the motor.
  • the motor current increases. If a certain threshold is exceeded in the FIGS. 10, 11 associated with the path S1 (in the same way this is also a time measurement, whereby the way can understandably be applied only to the closing of the compression jaws), this path value is stored approximately in a memory chip accommodated in the device, which for this purpose has a volatile memory can have. Thereafter, the increase in the current curve up to a maximum value is evident. This corresponds to the completion of the compression or the triggering of the return valve, after which the Hydraulic pressure drops sharply or also the hydraulic pump is switched off automatically.
  • the interruption can be carried out, for example, as in the above-mentioned patent application 10 2006 026 552 is explained in detail.
  • the relationship between motor current and path, approximately according to Fig. 10 can be stored in a non-volatile memory during the manufacture of the device. From the above it is also clear that in principle the same way with corresponding time measurements can be used.
  • a storage of this associated path value takes place approximately in a stored in the device memory chip, which may have a volatile memory for this purpose.
  • the path value can be done, for example, by converting the motor current detected over time, since a sufficiently precise (at least when averaging: linear) relationship exists between the travel of the piston and the (only) required motor current up to a first workpiece contact. There then takes place an interruption of the return of the hydraulic piston 5 after completion of pressing at this associated way mark S1. The interruption can be carried out, for example, as in the above-mentioned patent application 10 2006 026 552 is explained in detail.
  • the relationship between motor current and path, approximately according to Fig. 5 can be stored in a non-volatile memory during the manufacture of the device.
  • the relative position between the hydraulic cylinder and the hydraulic piston in the case of a piston device, for example, can be detected.
  • the completion of the compression can for example be recognized by the fact that, associated with the opening of a return valve, strong waste the motor current is carried out, which waste is then used to detect the end of the compression.
  • the time that elapses from the workpiece contact to the completion of the pressing is not the same for each pressing, but rather can depend on individual pressing conditions, in particular the pressed materials, the time can additionally or alternatively also be measured, that of the first workpiece contact , as detected in the manner described above, passes until the completion of the compression and this time measure then used accordingly to then trigger the interruption after completion of the compression and elapse of this time measure, so that-in the example - the hydraulic piston assumes the desired intermediate position.
  • a timer such as in the form of a microchip. In the event that a period of time is to be detected, this timer will start to count at a certain triggering time and then at a certain end time point the time interval thus determined will be detected and stored, for example, in the volatile memory.
  • Fig. 2 is the injection condition of the device according to Fig.1 shown.
  • Fig. 3 is the device according to Fig.1 represented in the retracted then then due to the procedure described intermediate position.
  • a device is shown with two pressing jaws.
  • a pressure sensor 10 is arranged in a partially schematic view of a pressing device in which a pressure sensor 10 is arranged.
  • the pressure sensor is associated with the return channel 11 of the hydraulic fluid disposed over which return passage, the hydraulic fluid flows to the return valve 12 and from there, with the return valve open, in the storage area 13.
  • a branch channel 14 is provided, see Fig. 6 , communicates with a receiving channel 15 of the pressure sensor 10.
  • the pressure sensor is thus arranged circumferentially offset to the return valve 12 and / or the return channel 11.
  • Fig. 7 the quality of the pressure measured by a pressure sensor over the piston stroke during compression is shown qualitatively. This already corresponds to a conversion. Because the actual pressure detection is usually preferred only over time. In principle, however, an additional displacement sensor can also be provided, for example.
  • the curve is drawn here only up to the event that a first significant workpiece contact and thus pressure increase is given.
  • Corresponding the pressure scale is also designed for very low pressures, for example up to 10 bar, in the illustration.
  • the pressure is preferably measured at regular time intervals. In the embodiment, at intervals of five milliseconds.
  • Fig. 7 Due to this relationship according to Fig. 7 can also be closed or calculated back to the position of the piston outside a workpiece contact from the measured pressure. This can be exploited, for example, that, by comparing the measured values, that piston position is determined which still corresponds to the linear relationship before a significant pressure increase due to the workpiece contact then occurs. A piston position determined in this way can subsequently be used as an intermediate position or holding position, from which then the next pressing can be started.
  • Fig. 8 In reference to Fig. 8 is in basically the same representation (pressure over the way) as in Fig. 7 the qualitative pressure curve is shown at a complete compression.
  • the grouting process begins at point A, here assuming a completely receded compression piston. There is first the slight increase in pressure up to the point B, which represents the workpiece contact and the beginning of a significant compression pressure increase. The compression takes place until the point C is reached, specifically in accordance with a first pressure gradient. After reaching point C, the pressing jaws lie on one another, but the triggering pressure at the end of the pressing or opening of the return valve has not yet been reached. It then comes to an increase in the pressure gradient until the point D is reached. At point D, the return valve opens or the compression is stopped and the pressure drops again to point E, whereupon the return of the piston, in the given case up to the point A in turn, then takes place.
  • Fig. 9 For clarity, the pressure curve (or a current measured at the pressure sensor) is plotted over time. It is in terms of a typical course for a real compression. Again, the above-mentioned points A, B, C, D and E can basically be distinguished.
EP08759675.5A 2007-05-16 2008-05-16 Verfahren zum betreiben eines motorisch betätigten handverpressgerätes Active EP2146823B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL08759675T PL2146823T3 (pl) 2007-05-16 2008-05-16 Sposób działania ręcznego urządzenia prasującego napędzanego silnikiem
EP14151750.8A EP2722133B1 (de) 2007-05-16 2008-05-16 Verfahren zum Betreiben eines motorisch betätigten Handverpressgerätes und Handverpressgerät
EP17177348.4A EP3243604B1 (de) 2007-05-16 2008-05-16 Motorisch betriebenes hand-verpressgerät und verfahren zum betreiben eines motorisch betätigten hand-verpressgerätes
PL14151750T PL2722133T3 (pl) 2007-05-16 2008-05-16 Sposób używania ręcznego urządzenia prasującego z napędem silnikowym oraz ręczne urządzenie z napędem silnikowym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007023068 2007-05-16
PCT/EP2008/056033 WO2008138987A2 (de) 2007-05-16 2008-05-16 Verfahren zum betreiben eines motorisch betätigten handverpressgerätes und handverpressgerät

Related Child Applications (3)

Application Number Title Priority Date Filing Date
EP14151750.8A Division EP2722133B1 (de) 2007-05-16 2008-05-16 Verfahren zum Betreiben eines motorisch betätigten Handverpressgerätes und Handverpressgerät
EP17177348.4A Division EP3243604B1 (de) 2007-05-16 2008-05-16 Motorisch betriebenes hand-verpressgerät und verfahren zum betreiben eines motorisch betätigten hand-verpressgerätes
EP14150453 Division-Into 2014-01-08

Publications (2)

Publication Number Publication Date
EP2146823A2 EP2146823A2 (de) 2010-01-27
EP2146823B1 true EP2146823B1 (de) 2014-02-12

Family

ID=39712176

Family Applications (3)

Application Number Title Priority Date Filing Date
EP14151750.8A Active EP2722133B1 (de) 2007-05-16 2008-05-16 Verfahren zum Betreiben eines motorisch betätigten Handverpressgerätes und Handverpressgerät
EP08759675.5A Active EP2146823B1 (de) 2007-05-16 2008-05-16 Verfahren zum betreiben eines motorisch betätigten handverpressgerätes
EP17177348.4A Active EP3243604B1 (de) 2007-05-16 2008-05-16 Motorisch betriebenes hand-verpressgerät und verfahren zum betreiben eines motorisch betätigten hand-verpressgerätes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP14151750.8A Active EP2722133B1 (de) 2007-05-16 2008-05-16 Verfahren zum Betreiben eines motorisch betätigten Handverpressgerätes und Handverpressgerät

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17177348.4A Active EP3243604B1 (de) 2007-05-16 2008-05-16 Motorisch betriebenes hand-verpressgerät und verfahren zum betreiben eines motorisch betätigten hand-verpressgerätes

Country Status (12)

Country Link
US (3) US8056473B2 (da)
EP (3) EP2722133B1 (da)
KR (1) KR101467828B1 (da)
CN (3) CN103624740B (da)
AU (1) AU2008249954B2 (da)
DE (1) DE102008024018B4 (da)
DK (1) DK2146823T3 (da)
ES (2) ES2665902T3 (da)
PL (2) PL2722133T3 (da)
PT (1) PT2146823E (da)
RU (1) RU2483861C2 (da)
WO (1) WO2008138987A2 (da)

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CN108883523A (zh) * 2016-01-28 2018-11-23 古斯塔夫.克劳克有限责任公司 运行工作设备的方法和工作设备

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US10562254B2 (en) 2020-02-18
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EP2722133A2 (de) 2014-04-23
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CN102528743B (zh) 2014-10-15
CN102528743A (zh) 2012-07-04
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AU2008249954A1 (en) 2008-11-20
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US8056473B2 (en) 2011-11-15
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