EP1120236B1 - Feeding device for the upper slide of a press - Google Patents

Feeding device for the upper slide of a press Download PDF

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Publication number
EP1120236B1
EP1120236B1 EP01101053A EP01101053A EP1120236B1 EP 1120236 B1 EP1120236 B1 EP 1120236B1 EP 01101053 A EP01101053 A EP 01101053A EP 01101053 A EP01101053 A EP 01101053A EP 1120236 B1 EP1120236 B1 EP 1120236B1
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EP
European Patent Office
Prior art keywords
drive motor
feed
piston tube
spindle
feed device
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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.)
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EP01101053A
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German (de)
French (fr)
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EP1120236A2 (en
EP1120236A3 (en
Inventor
Alois Seer
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Maschinen und Stahlbau Julius Lippert GmbH and Co KG
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Maschinen und Stahlbau Julius Lippert GmbH and Co KG
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Publication of EP1120236A3 publication Critical patent/EP1120236A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means

Definitions

  • the invention relates to a feed device for the upper slide of a press, in particular a pottery press, wherein a drive motor with a Feed spindle is connected, which is mounted in a casing tube, wherein the Feed screw is screwed through a spindle nut, which in a relative is fixed to the casing axially displaceable piston tube, and wherein the Piston tube mounted mounted on the upper slide.
  • Known feeding devices for the upper slide of a press have a single drive motor or hydraulic drive at greater forces, to the upper slide associated with the upper slide Deliver press to the corresponding subform. It is desirable that Delivery of the upper mold until just before the lower mold with a relatively large Feed rate to carry out, and this feed movement until shortly before Reaching the lower mold suitable to reduce to a defined squeezing and Perform impression movement. The return movement of the upper mold after Implementation of the pressing process in the initial or basic position can then again with correspondingly high speed. This movement conditionally in the known feed devices of the type mentioned with a single drive motor, a corresponding drive control.
  • a feed device of the type mentioned for a top slide a Press, wherein a drive motor is connected to a feed screw, which in a jacket tube is stored, is known from JP 6-18 25 99 A.
  • the Feed screw is screwed through a spindle nut, which in a relative is fixed to the casing axially displaceable piston tube.
  • the piston tube is attached to the upper slide of the press.
  • the invention is based on the object, a feed device of the above called type to create, with which in a relatively simple constructive Build up an exact feed movement of the upper mold or the upper slide of the Press to the lower mold with an adjoining precisely controlled Slowed pressure and impression movement as well as a fast Return movement is possible in the initial or basic position of the upper mold, wherein a long travel distance of the upper mold or the upper slide between its retracted starting or basic position and its extended impression position is feasible.
  • a first drive motor high speed and low torque is that the mounted on the upper slide piston tube with a second Anatriebsmotor is connected, which has a lower speed and a higher Torque has, as the first drive motor, that the spindle nut in the vom Upper slide remote end portion of the piston tube is fixed and that of the Spindle nut axially spaced at the associated piston tube end a Knuckle protection forming scraper is attached.
  • the first high-speed, low-torque drive motor is for Rapid movement of the upper slide and thus attached to the upper slide Upper form provided to the lower mold.
  • the first drive motor With the help of the first drive motor is during the Rapid traverse movement of the upper slide the feed spindle driven by rotation, so that the spindle nut with respect to the loc. Press-resistant casing axially adjusted becomes.
  • This rapid traverse movement of the upper slide with the upper mold towards the lower mold can be assisted by the second drive motor when simultaneously with the Drive the feed spindle by the first drive motor and the spindle nut is driven by means of the second drive motor via the piston tube with. Short before reaching the lower mold, the first drive motor is switched off.
  • the return movement of the upper slide and thus the upper mold into the starting or basic position is then again higher with the help of the first drive motor Speed and low torque.
  • This return movement can be through the second drive motor can be supported.
  • the first drive motor After reaching the starting or Basic position of the upper form and thus a predetermined donor value of Position sensor of the press, the first drive motor is turned off. Will the Retraction movement of the upper mold supported by the second drive motor, so also becomes the second drive motor upon reaching the home or home position off.
  • the spindle nut is fixed to the distal end of the upper slide in the piston tube and axially spaced from the spindle nut at the associated piston tube end a Ausknickêt forming scraper is attached, there is the advantage that a long path difference of the piston tube and thus the upper slide with the Upper mold between its retracted initial or basic position and its extended position impression is feasible.
  • Excellent operational reliability and long life can be achieved when the piston tube is filled with a lubricating oil, wherein the spindle nut has at least one through hole for the lubricating oil and the space provided between the spindle nut and the scraper forms a storage space for overflowing lubricating oil.
  • Such a design of the latter type ensures that the spindle nut runs during the rapid traverse movement in the oil bath, so that the friction between the spindle nut and the feed screw is reduced to a minimum.
  • the Feed spindle in the jacket tube by means of a remote from the upper slide End section provided pendulum ball bearings is stored and / or if that Piston tube is mounted on the upper slide by means of a second self-aligning ball bearing.
  • the first drive motor is a rapid traction servo drive motor is.
  • the second Drive motor is a slow speed servo drive motor.
  • the feed screw can be formed by a ball screw.
  • the first Drive motor with the remote from the upper slide end of the Feed screw is connected by means of a self-locking helical gear.
  • This helical gear may be a Doppelschraubgetriebe.
  • This here retroactive torque is self-locking via the feed spindle Transferring helical gear and added by this self-locking. This results in the advantage that this retroactive torque is not on the first drive motor is passed.
  • the first drive motor is needed therefore advantageously no special braking device.
  • the end position of the latter feed or Auspreßterrorism can precisely defined by a limit stop provided on the press be. Upon reaching this limit stop, the second drive motor connected. Immediately afterwards, the upper mold moves to produce the Imprint freely programmable a precisely defined distance with the help of second drive means from the lower mold.
  • the second drive motor can be used for the upper slide associated with adjacent end portion of the piston tube and with the piston tube be connected by means of a gear transmission.
  • this Gear transmission gearbox it is possible in an advantageous manner that the second Drive means the mentioned feed. Auspreßddling torque limited generated by the gear transmission gear.
  • the feed device according to the invention has the very significant advantage that very large compressive pressures at the same time high power purely mechanical are feasible.
  • Figure 1 shows a front view of a press 10 with a frame 12.
  • the frame 12 has a base plate 14 and guide pillars 16 which from the base plate 14th to stand vertically upwards.
  • a top slide 18th guided vertically.
  • position encoders 20 and 22 are provided with the Sensor organs 24 and 26 cooperate, which provided on the upper slide 18 are.
  • the position sensor 20 is the initial or basic position of the Upper slide 18 and by the position sensor 22 is the Auspreß- and impression position of the upper slide 18 and the attached upper slide 18 upper mold 28 defined.
  • a lower mold 30 On the frame 12 of the press 10 is axially aligned with the upper mold 28, a lower mold 30 provided.
  • the lower mold 30 sets, for example, the outer contour of a Clay pot and the upper mold 28 determines the inner contour of the clay pot.
  • other clay objects or Objects made of other materials are also provided.
  • the jacket tube 34 has a from Upper slide 18 on the distal end portion 38, on which in the casing tube 34 a Self-aligning ball bearing 40 is provided.
  • the self-aligning ball bearing 40 is used for storage one end section 42 of a feed screw 44 of the feed device 32.
  • the end portion 42 of the feed screw 44 is connected via a helical gear 46 with a first drive motor 48 operatively connected.
  • a self-locking Doppelschraubgetriebe. at the first drive motor 48 is preferably a rapid traction servo drive motor high speed and low torque, i. relatively smaller Power.
  • the feed screw 44 is screwed through a spindle nut 50, which in Piston tube 36 is fixed to its end remote from the upper slide 52.
  • the piston tube 36 is connected to its second end portion 54 by means of a second Self-aligning ball bearings 56 mounted on the upper slide 18 rotatably mounted.
  • the piston tube 36 is connected to a second drive motor 58 by means of a Gear transmission gear 60 connected to the second end portion 54 of Piston tube 36 is provided.
  • the second drive motor 58 is around a slow speed servo drive motor, i. lower by a drive motor Speed and high torque.
  • FIGS. 2 and 3 the same details with the same reference numerals as in Figure 1 are designated, so that it is unnecessary, in conjunction with Figures 2 and 3 all these details to describe again in detail.
  • the feed device 32 in its extended position and in Figure 3 in its retracted position shown.
  • the lubricating oil 68 in the drawn in Figure 3 retracted position of Feed device 32 can penetrate into the storage space 66, which is Spindle nut 50 with at least one (not shown) through hole educated.
  • Reference numeral 70 designates a drive motor in FIG Stroke limit of the upper slide 18 and thus to Hubbegrenzung the upper mold 28 is provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Description

Die Erfindung betrifft eine Vorschubeinrichtung für den Oberschlitten einer Presse, insbesondere einer Tonwaren-Presse, wobei ein Antriebsmotor mit einer Vorschubspindel verbunden ist, die in einem Mantelrohr gelagert ist, wobei die Vorschubspindel durch eine Spindelmutter durchgeschraubt ist, die in einem relativ zum Mantelrohr axial verstellbeweglichen Kolbenrohr fixiert ist, und wobei das Kolbenrohr am Oberschlitten gelagert angebracht ist.The invention relates to a feed device for the upper slide of a press, in particular a pottery press, wherein a drive motor with a Feed spindle is connected, which is mounted in a casing tube, wherein the Feed screw is screwed through a spindle nut, which in a relative is fixed to the casing axially displaceable piston tube, and wherein the Piston tube mounted mounted on the upper slide.

Bekannte Vorschubeinrichtungen für den Oberschlitten einer Presse, insbesondere einer Tonwaren-Presse, weisen einen einzigen Antriebsmotor bzw. Hydraulikantrieb bei größeren Kräften auf, um den mit einer Oberform verbundenen Oberschlitten der Presse zur zugehörigen Unterform zuzustellen. Dabei ist es erwünscht, die Zustellung der Oberform bis kurz vor die Unterform mit einer relativ großen Vorschubgeschwindigkeit durchzuführen, und diese Vorschubbewegung erst kurz vor Erreichen der Unterform geeignet zu reduzieren, um eine definierte Auspreß- und Abdruckbewegung durchzuführen. Die Rückstellbewegung der Oberform nach Durchführung des Preßvorgangs in die Ausgangs- bzw. Grundstellung kann dann wieder mit entsprechend großer Geschwindigkeit erfolgen. Dieser Bewegungsablauf bedingt bei den bekannten Vorschubeinrichtungen der eingangs genannten Art mit einem einzigen Antriebsmotor eine entsprechende Antriebs-Steuerung.Known feeding devices for the upper slide of a press, in particular a pottery press, have a single drive motor or hydraulic drive at greater forces, to the upper slide associated with the upper slide Deliver press to the corresponding subform. It is desirable that Delivery of the upper mold until just before the lower mold with a relatively large Feed rate to carry out, and this feed movement until shortly before Reaching the lower mold suitable to reduce to a defined squeezing and Perform impression movement. The return movement of the upper mold after Implementation of the pressing process in the initial or basic position can then again with correspondingly high speed. This movement conditionally in the known feed devices of the type mentioned with a single drive motor, a corresponding drive control.

Eine Vorschubeinrichtung der eingangs genannten Art für einen Oberschlitten einer Presse, wobei ein Antriebsmotor mit einer Vorschubspindel verbunden ist, die in einem Mantelrohr gelagert ist, ist aus der JP 6-18 25 99 A bekannt. Die Vorschubspindel ist durch eine Spindelmutter durchgeschraubt, die in einem relativ zum Mantelrohr axial verstellbeweglichen Kolbenrohr fixiert ist. Das Kolbenrohr ist am Oberschlitten der Presse angebracht.A feed device of the type mentioned for a top slide a Press, wherein a drive motor is connected to a feed screw, which in a jacket tube is stored, is known from JP 6-18 25 99 A. The Feed screw is screwed through a spindle nut, which in a relative is fixed to the casing axially displaceable piston tube. The piston tube is attached to the upper slide of the press.

Aus der JP 4-75 798 A ist eine Vorschubeinrichtung für eine Presse bekannt, die zwei Antriebsmotoren mit unterschiedlichen Drehzahlen und unterschiedlichen Drehmomenten aufweist, wobei der zweite Antriebsmotor eine Spindelmutter relativ zu einem Mantelrohr in Drehbewegung versetzt.From JP 4-75 798 A a feed device for a press is known, the two drive motors with different speeds and different Having torques, wherein the second drive motor relative to a spindle nut offset to a jacket tube in rotary motion.

Eine weitere Vorrichtung der oben genannten Gattung ist aus der US-A-5 488 880 bekannt.Another device of the above type is out US-A-5,488,880.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorschubeinrichtung der eingangs genannten Art zu schaffen, mit welcher bei einem relativ einfachen konstruktiven Aufbau eine exakte Zustellbewegung der Oberform bzw. des Oberschlittens der Presse zur Unterform mit einer daran anschließenden genau gesteuerten verlangsamten Anpreß- und Abdruckbewegung sowie eine schnelle Rückstellbewegung in die Ausgangs- bzw. Grundstellung der Oberform möglich ist, wobei eine große Wegstreckendistanz der Oberform bzw. des Oberschlittens zwischen seiner eingefahrenen Ausgangs- bzw. Grundposition und seiner ausgefahrenen Abdruckposition realisierbar ist.The invention is based on the object, a feed device of the above called type to create, with which in a relatively simple constructive Build up an exact feed movement of the upper mold or the upper slide of the Press to the lower mold with an adjoining precisely controlled Slowed pressure and impression movement as well as a fast Return movement is possible in the initial or basic position of the upper mold, wherein a long travel distance of the upper mold or the upper slide between its retracted starting or basic position and its extended impression position is feasible.

Diese Aufgabe wird bei einer Vorschubeinrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß der mit der Vorschubspindel verbundene Antriebsmotor ein erster Antriebsmotor hoher Drehzahl und niedrigen Drehmomentes ist, daß das am Oberschlitten gelagerte Kolbenrohr mit einem zweiten Anatriebsmotor verbunden ist, der eine niedrigere Drehzahl und ein höheres Drehmoment besitzt als der erste Antriebsmotor, daß die Spindelmutter in dem vom Oberschlitten entfernten Endabschnitt des Kolbenrohres fixiert ist und daß von der Spindelmutter axial beabstandet am zugehörigen Kolbenrohrende ein eine Ausknicksicherung bildender Abstreifer befestigt ist.This object is achieved in a feed device of the type mentioned According solved according to the invention that associated with the feed screw Drive motor, a first drive motor high speed and low torque is that the mounted on the upper slide piston tube with a second Anatriebsmotor is connected, which has a lower speed and a higher Torque has, as the first drive motor, that the spindle nut in the vom Upper slide remote end portion of the piston tube is fixed and that of the Spindle nut axially spaced at the associated piston tube end a Knuckle protection forming scraper is attached.

Der erste Antriebsmotor hoher Drehzahl und niedrigen Drehmomentes ist zur Eilgangbewegung des Oberschlittens und somit der am Oberschlitten angebrachten Oberform hin zur Unterform vorgesehen. Derartige Antriebsmotoren hoher Drehzahl und niedrigen Drehmomentes, d.h. entsprechend kleiner Antriebsleistung, stehen preisgünstig zur Verfügung. Mit Hilfe des ersten Antriebsmotors wird während der Eilgangbewegung des Oberschlittens die Vorschubspindel rotativ angetrieben, so daß die Spindelmutter in Bezug zum orts- d.h. pressefesten Mantelrohr axial verstellt wird. Diese Eilgangbewegung des Oberschlittens mit der Oberform hin zur Unterform kann durch den zweiten Antriebsmotor unterstützt werden, wenn gleichzeitig mit dem Antrieb der Vorschubspindel durch den ersten Antriebsmotor auch die Spindelmutter mit Hilfe des zweiten Antriebsmotors über das Kolbenrohr mit angetrieben wird. Kurz vor Erreichen der Unterform wird der erste Antriebsmotor abgeschaltet. Die weitere Vorschubbewegung, d.h. die Auspreßbewegung erfolgt nun nur noch mit Hilfe des zweiten Antriebsmotors. Das heißt, der zweite Antriebsmotor erzeugt nun die besagte Vorschub- bzw. Preßbewegung. An diese Auspreßbewegung schließt sich mit Hilfe des zweiten Antriebsmotors unmittelbar eine Abdruckbewegung der Oberform, d.h. des Oberschlittens der Presse an. Dabei bewegt sich der Oberschlitten mit der Oberform frei programmierbar eine definierte Wegstrecke in Richtung der Unterform.The first high-speed, low-torque drive motor is for Rapid movement of the upper slide and thus attached to the upper slide Upper form provided to the lower mold. Such drive motors high speed and low torque, i. correspondingly small drive power, stand reasonably priced. With the help of the first drive motor is during the Rapid traverse movement of the upper slide the feed spindle driven by rotation, so that the spindle nut with respect to the loc. Press-resistant casing axially adjusted becomes. This rapid traverse movement of the upper slide with the upper mold towards the lower mold can be assisted by the second drive motor when simultaneously with the Drive the feed spindle by the first drive motor and the spindle nut is driven by means of the second drive motor via the piston tube with. Short before reaching the lower mold, the first drive motor is switched off. The others Feed movement, i. the Auspreßbewegung now only with the help of second drive motor. That is, the second drive motor now generates the said feed or pressing movement. At this squeezing closes with the help of the second drive motor directly an impression movement of the Top form, i. of the upper slide of the press. It moves the Upper slide with the upper mold freely programmable a defined distance in Direction of the lower mold.

Die Rückstellbewegung des Oberschlittens und somit der Oberform in die Ausgangs- bzw. Grundstellung erfolgt dann wieder mit Hilfe des ersten Antriebsmotors hoher Drehzahl und niedrigen Drehmomentes. Auch diese Rückstellbewegung kann durch den zweiten Antriebsmotor unterstützt werden. Nach Erreichen der Ausgangs- bzw. Grundposition der Oberform und somit eines vorbestimmten Geberwertes eines Positionssensors der Presse wird der erste Antriebsmotor abgeschaltet. Wird die Rückzugbewegung der Oberform durch den zweiten Antriebsmotor unterstützt, so wird auch der zweite Antriebsmotor bei Erreichen der Ausgangs- bzw. Grundposition abgeschaltet.The return movement of the upper slide and thus the upper mold into the starting or basic position is then again higher with the help of the first drive motor Speed and low torque. This return movement can be through the second drive motor can be supported. After reaching the starting or Basic position of the upper form and thus a predetermined donor value of Position sensor of the press, the first drive motor is turned off. Will the Retraction movement of the upper mold supported by the second drive motor, so also becomes the second drive motor upon reaching the home or home position off.

Dadurch, das erfindungsgemäß die Spindelmutter an dem vom Oberschlitten entfernten Endabschnitt im Kolbenrohr fixiert ist und von der Spindelmutter axial beabstandet am zugehörigen Kolbenrohrende ein eine Ausknicksicherung bildender Abstreifer befestigt ist, ergibt sich der Vorteil, daß eine große Wegstreckendifferenz des Kolbenrohres und somit des Oberschlittens mit der Oberform zwischen seiner eingefahrenen Ausgangs- bzw. Grundposition und seiner ausgefahrenen Abdruckposition realisierbar ist.
Eine ausgezeichnete Betriebszuverlässigkeit und hohe Lebensdauer ist erreichbar, wenn das Kolbenrohr mit einem Schmieröl gefüllt ist, wobei die Spindelmutter mindestens ein Durchgangsloch für das Schmieröl aufweist und der zwischen der Spindelmutter und dem Abstreifer vorgesehene Raum einen Speicherraum für überströmendes Schmieröl bildet. Durch eine solche Ausbildung der zuletzt genannten Art wird erreicht, daß die Spindelmutter während der Eilgangbewegung im Ölbad läuft, so daß die Reibung zwischen der Spindelmutter und der Vorschubspindel auf ein Minimum reduziert ist.Thus, according to the invention, the spindle nut is fixed to the distal end of the upper slide in the piston tube and axially spaced from the spindle nut at the associated piston tube end a Ausknicksicherung forming scraper is attached, there is the advantage that a long path difference of the piston tube and thus the upper slide with the Upper mold between its retracted initial or basic position and its extended position impression is feasible.
Excellent operational reliability and long life can be achieved when the piston tube is filled with a lubricating oil, wherein the spindle nut has at least one through hole for the lubricating oil and the space provided between the spindle nut and the scraper forms a storage space for overflowing lubricating oil. Such a design of the latter type ensures that the spindle nut runs during the rapid traverse movement in the oil bath, so that the friction between the spindle nut and the feed screw is reduced to a minimum.

Zum konstruktiv einfachen Ausgleich von abmessungsbedingten Fluchtungsfehlem der erfindungsgemäßen Vorschubeinrichtung ist es bevorzugt, wenn die Vorschubspindel im Mantelrohr mittels eines an dem vom Oberschlitten entfernten Endabschnitt vorgesehenen Pendelkugellager gelagert ist und/oder wenn das Kolbenrohr am Oberschlitten mittels eines zweiten Pendelkugellagers gelagert ist.For structurally simple compensation of dimensional misalignment the feed device according to the invention, it is preferred if the Feed spindle in the jacket tube by means of a remote from the upper slide End section provided pendulum ball bearings is stored and / or if that Piston tube is mounted on the upper slide by means of a second self-aligning ball bearing.

Erfindungsgemäß ist es zweckmäßig, wenn der erste Antriebsmotor ein Eilgang-Servoantriebsmotor ist. Desgleichen ist es zweckmäßig, wenn der zweite Antriebsmotor ein Langsamgang-Servoantriebsmotor ist. Die Vorschubspindel kann von einer Kugelumlaufspindel gebildet sein.According to the invention it is expedient if the first drive motor is a rapid traction servo drive motor is. Likewise, it is expedient if the second Drive motor is a slow speed servo drive motor. The feed screw can be formed by a ball screw.

Bevorzugt ist es bei der erfindungsgemäßen Vorschubeinrichtung, wenn der erste Antriebsmotor mit dem vom Oberschlitten entfernten Endabschnitt der Vorschubspindel mittels eines selbsthemmenden Schraubgetriebes verbunden ist. Bei diesem Schraubgetriebe kann es sich um ein Doppelschraubgetriebe handeln. Während der oben erwähnten, zeitlich an die Eilgangbewegung der Oberform unmittelbar anschließenden Vorschub- bzw. Auspreßbewegung erfolgt diese - wie bereits erwähnt worden ist - mit Hilfe des zweiten Antriebsmotors. Das hierbei zurückwirkende Drehmoment wird über die Vorschubspindel zum selbsthemmenden Schraubgetriebe übertragen und von diesem in Selbsthemmung aufgenommen. Daraus resultiert der Vorteil, daß dieses rückwirkende Drehmoment nicht an den ersten Antriebsmotor weitergegeben wird. Der erste Antriebsmotor benötigt folglich deshalb in vorteilhafter Weise keine spezielle Bremseinrichtung.It is preferred in the feed device according to the invention, when the first Drive motor with the remote from the upper slide end of the Feed screw is connected by means of a self-locking helical gear. This helical gear may be a Doppelschraubgetriebe. During the above, in time to the rapid movement of the upper mold immediately following feed or Auspreßbewegung done this - how already mentioned - with the help of the second drive motor. This here retroactive torque is self-locking via the feed spindle Transferring helical gear and added by this self-locking. This results in the advantage that this retroactive torque is not on the first drive motor is passed. The first drive motor is needed therefore advantageously no special braking device.

Die Endposition der zuletzt genannten Vorschub- bzw. Auspreßbewegung kann durch einen an der Presse vorgesehenen Begrenzungsanschlag genau definiert sein. Beim Erreichen dieses Begrenzungsanschlages wird der zweite Antriebsmotor geschaltet. Daran unmittelbar anschließend fährt die Oberform zur Erzeugung des Abdruckes frei programmierbar eine genau definierte Wegstrecke mit Hilfe der zweiten Antriebseinrichtung aus der Unterform.The end position of the latter feed or Auspreßbewegung can precisely defined by a limit stop provided on the press be. Upon reaching this limit stop, the second drive motor connected. Immediately afterwards, the upper mold moves to produce the Imprint freely programmable a precisely defined distance with the help of second drive means from the lower mold.

Erfindungsgemäß kann der zweite Antriebsmotor dem zum Oberschlitten benachbarten Endabschnitt des Kolbenrohres zugeordnet und mit dem Kolbenrohr mittels eines Zahnradübersetzungsgetriebes verbunden sein. Mit Hilfe dieses Zahnradübersetzungsgetriebes ist es in vorteilhafter Weise möglich, daß die zweite Antriebseinrichtung die erwähnte Vorschub- d.h. Auspreßbewegung drehmomentbegrenzt über das Zahnradübersetzungsgetriebe erzeugt.According to the invention, the second drive motor can be used for the upper slide associated with adjacent end portion of the piston tube and with the piston tube be connected by means of a gear transmission. With the help of this Gear transmission gearbox, it is possible in an advantageous manner that the second Drive means the mentioned feed. Auspreßbewegung torque limited generated by the gear transmission gear.

Die erfindungsgemäße Vorschubeinrichtung weist den ganz erheblichen Vorteil auf, daß sehr große Preßdrücke bei gleichzeitig hoher Leistung rein mechanisch realisierbar sind.The feed device according to the invention has the very significant advantage that very large compressive pressures at the same time high power purely mechanical are feasible.

Weitere Einzelheiten, Merkmale und Vorteil ergeben sich aus der nachfolgenden Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispieles der erfindungsgemäßen Vorschubeinrichtung für den Oberschlitten einer Presse, insbesondere einer Tonwarenpresse. Es zeigen:

Figur 1
eine Presse mit einer Ausbildung der Vorschubeinrichtung, die in der eingefahrenen Grund- bzw. Ausgangsstellung gezeichnet ist,
Figur 2
die Vorschubeinrichtung gemäß Figur 1 in der ausgefahrenen End-, d.h. Auspreß- bzw. Abdruckposition, und
Figur 3
die Vorschubeinrichtung allein in der eingefahrenen Grundstellung - wie auch in Figur 1 dargestellt-.
Further details, features and advantages will become apparent from the following description of an embodiment of the inventive feed device for the upper slide of a press, in particular a pottery press shown in the drawing. Show it:
FIG. 1
a press with a design of the feed device, which is drawn in the retracted basic or initial position,
FIG. 2
the feed device according to Figure 1 in the extended end, ie Auspreß- or impression position, and
FIG. 3
the feed device alone in the retracted home position - as shown in Figure 1.

Figur 1 zeigt in einer Vorderansicht eine Presse 10 mit einem Gestell 12. Das Gestell 12 weist eine Grundplatte 14 und Führungssäulen 16 auf, die von der Grundplatte 14 lotrecht nach oben stehen. An den Führungssäulen 16 ist ein Oberschlitten 18 vertikal geführt.Figure 1 shows a front view of a press 10 with a frame 12. The frame 12 has a base plate 14 and guide pillars 16 which from the base plate 14th to stand vertically upwards. At the guide columns 16 is a top slide 18th guided vertically.

An den Führungssäulen 16 sind Positionsgeber 20 und 22 vorgesehen, die mit Sensororganen 24 und 26 zusammenwirken, die am Oberschlitten 18 vorgesehen sind. Durch die Positionsgeber 20 ist die Ausgangs- bzw. Grundstellung des Oberschlittens 18 und durch die Positionsgeber 22 ist die Auspreß- und Abdruck-Position des Oberschlittens 18 bzw. der am Oberschlitten 18 befestigten Oberform 28 definiert.At the guide columns 16 position encoders 20 and 22 are provided with the Sensor organs 24 and 26 cooperate, which provided on the upper slide 18 are. By the position sensor 20 is the initial or basic position of the Upper slide 18 and by the position sensor 22 is the Auspreß- and impression position of the upper slide 18 and the attached upper slide 18 upper mold 28 defined.

Am Gestell 12 der Presse 10 ist mit der Oberform 28 axial fluchtend eine Unterform 30 vorgesehen. Die Unterform 30 legt beispielsweise die Außenkontur eines Tontopfes und die Oberform 28 legt die Innenkontur des Tontopfes fest. Selbstverständlich sind mit Hilfe der Presse 10 auch andere Tongegenstände bzw. Gegenstände aus anderen Materialien herstellbar.On the frame 12 of the press 10 is axially aligned with the upper mold 28, a lower mold 30 provided. The lower mold 30 sets, for example, the outer contour of a Clay pot and the upper mold 28 determines the inner contour of the clay pot. Of course, with the help of the press 10, other clay objects or Objects made of other materials.

Zum Antrieb des Oberschlittens 18 mit der Oberform 28 entlang den Führungssäulen 16 des Gestelles 12 der Presse 10 dient eine Vorschubeinrichtung 32, die ein gestellfestes Mantelrohr 34 und ein in Bezug zum gestellfesten Mantelrohr 34 axial verstellbares Kolbenrohr 36 aufweist. Das Mantelrohr 34 weist einen vom Oberschlitten 18 entfernten Endabschnitt 38 auf, an welchem im Mantelrohr 34 ein Pendelkugellager 40 vorgesehen ist. Das Pendelkugellager 40 dient zur Lagerung des einen Endabschnittes 42 einer Vorschubspindel 44 der Vorschubeinrichtung 32. Der Endabschnitt 42 der Vorschubspindel 44 ist über ein Schraubgetriebe 46 mit einem ersten Antriebsmotor 48 wirkverbunden. Bei dem Schraubgetriebe 46 handelt es sich zweckmäßigerweise um ein selbsthemmendes Doppelschraubgetriebe. Bei dem ersten Antriebsmotor 48 handelt es sich vorzugsweise um einen Eilgang-Servoantriebsmotor hoher Drehzahl und niedrigen Drehmomentes, d.h. relativ kleiner Leistung.To drive the upper slide 18 with the upper mold 28 along the guide columns 16 of the frame 12 of the press 10 is a feed device 32, the one frame-fixed jacket tube 34 and with respect to the frame-fixed jacket tube 34 axially adjustable piston tube 36 has. The jacket tube 34 has a from Upper slide 18 on the distal end portion 38, on which in the casing tube 34 a Self-aligning ball bearing 40 is provided. The self-aligning ball bearing 40 is used for storage one end section 42 of a feed screw 44 of the feed device 32. The end portion 42 of the feed screw 44 is connected via a helical gear 46 with a first drive motor 48 operatively connected. In the helical gear 46 is it is expediently a self-locking Doppelschraubgetriebe. at the first drive motor 48 is preferably a rapid traction servo drive motor high speed and low torque, i. relatively smaller Power.

Die Vorschubspindel 44 ist durch eine Spindelmutter 50 durchgeschraubt, die im Kolbenrohr 36 an dessen vom Oberschlitten entfernten Endabschnitt 52 fixiert ist. Das Kolbenrohr 36 ist mit seinem zweiten Endabschnitt 54 mittels eines zweiten Pendelkugellagers 56 am Oberschlitten 18 drehbar gelagert angebracht.The feed screw 44 is screwed through a spindle nut 50, which in Piston tube 36 is fixed to its end remote from the upper slide 52. The piston tube 36 is connected to its second end portion 54 by means of a second Self-aligning ball bearings 56 mounted on the upper slide 18 rotatably mounted.

Das Kolbenrohr 36 ist mit einem zweiten Antriebsmotor 58 mittels eines Zahnradübersetzungsgetriebes 60 verbunden, das am zweiten Endabschnitt 54 des Kolbenrohres 36 vorgesehen ist. Bei dem zweiten Antriebsmotor 58 handelt es sich um einen Langsamgang-Servoantriebsmotor, d.h. um einen Antriebsmotor niedriger Drehzahl und hohen Drehmomentes.The piston tube 36 is connected to a second drive motor 58 by means of a Gear transmission gear 60 connected to the second end portion 54 of Piston tube 36 is provided. The second drive motor 58 is around a slow speed servo drive motor, i. lower by a drive motor Speed and high torque.

An dem vom Oberschlitten 18 entfernten Kolbenrohrende 62 ist ein Abstreifer 64 für die Vorschubspindel 44 vorgesehen. Die Spindelmutter 50 weist vom Abstreifer 64 einen axialen Abstand auf, so daß zwischen dem eine Ausknicksicherung bildenden Abstreifer 64 und der Spindelmutter 50 ein Speicherraum 66 für Schmieröl 68 ausgebildet ist. Das Schmieröl 68 ist in den Figuren 2 und 3 verdeutlicht, in welchen gleiche Einzelheiten mit denselben Bezugsziffern wie in Figur 1 bezeichnet sind, so daß es sich erübrigt, in Verbindung mit den Figuren 2 und 3 alle diese Einzelheiten noch einmal detailliert zu beschreiben. In Figur 2 ist die Vorschubeinrichtung 32 in ihrer ausgefahrenen Position und in Figur 3 in ihrer eingefahrenen Position dargestellt.At the remote from the upper slide 18 piston tube end 62 is a scraper 64 for the feed screw 44 is provided. The spindle nut 50 points away from the scraper 64 an axial distance, so that between which a Ausknicksicherung forming Wiper 64 and the spindle nut 50, a storage space 66 for lubricating oil 68th is trained. The lubricating oil 68 is illustrated in FIGS. 2 and 3, in which the same details with the same reference numerals as in Figure 1 are designated, so that it is unnecessary, in conjunction with Figures 2 and 3 all these details to describe again in detail. In Figure 2, the feed device 32 in its extended position and in Figure 3 in its retracted position shown.

Damit das Schmieröl 68 in der in Figur 3 gezeichneten eingefahrenen Position der Vorschubeinrichtung 32 in den Speicherraum 66 eindringen kann, ist die Spindelmutter 50 mit mindestens einem (nicht gezeichneten) Durchgangsloch ausgebildet.Thus, the lubricating oil 68 in the drawn in Figure 3 retracted position of Feed device 32 can penetrate into the storage space 66, which is Spindle nut 50 with at least one (not shown) through hole educated.

Mit der Bezugsziffer 70 ist in Figur 1 ein Antriebsmotor bezeichnet, der zur Hubbegrenzung des Oberschlittens 18 und somit zur Hubbegrenzung der Oberform 28 vorgesehen ist.Reference numeral 70 designates a drive motor in FIG Stroke limit of the upper slide 18 and thus to Hubbegrenzung the upper mold 28 is provided.

Claims (9)

  1. Feed device for the top slide (18) of a press (10), in particular an earthenware press, a drive motor (48) being connected to a feed spindle (44) which is mounted in a tubular casing (34), the feed spindle (44) being screwed through a spindle nut (50) which is fixed in a piston tube (36) which is axially adjustable relative to the tubular casing (34), and the piston tube (36) being mounted on the top slide (18), the drive motor connected to the feed spindle (44) being a first drive motor (48) of high speed and low torque, the piston tube (36) mounted on the top slide (18) being connected to a second drive motor (58) which has a lower speed and a higher torque than the first drive motor (48), the spindle nut (50) being fixed in that end section (52) of the piston tube (36) which is remote from the top slide (18), and a wiper (64) which forms buckling protection and is intended for the feed spindle being fastened to the associated piston tube end (62) at an axial distance from the spindle nut (50).
  2. Feed device according to Claim 1, characterized in that the piston tube (36) is filled with a lubricating oil (68), the spindle nut (50) having at least one through-hole for the lubricating oil (68), and the space provided between the spindle nut (50) and the wiper (64) forming a reservoir space (66) for overflowing lubricating oil (68).
  3. Feed device according to either of Claims 1 and 2, characterized in that the feed spindle (44) is mounted in the tubular casing (34) by means of a self-aligning ball bearing (40) provided on the end section (38) remote from the top slide (18).
  4. Feed device according to one of Claims 1 to 3, characterized in that the piston tube (36) is mounted on the top slide (18) by means of a second self-aligning ball bearing (56).
  5. Feed device according to Claim 1, characterized in that the first drive motor (48) is a rapid-traverse servo drive motor.
  6. Feed device according to Claim 1, characterized in that the second drive motor (58) is a slow-traverse servo drive motor.
  7. Feed device according to Claim 1, characterized in that the feed spindle (44) is formed by a recirculating ball screw.
  8. Feed device according to one of Claims 1 to 7, characterized in that the first drive motor (48) is connected by means of a self-locking helical gear (46) to that end section (42) of the feed spindle (44) which is remote from the top slide (18).
  9. Feed device according to one of Claims 1 to 8, characterized in that the second drive motor (58) is assigned to that end section (54) of the piston tube (36) which is adjacent to the top slide (18) and is connected to the piston tube (36) by means of a step-up gear (60).
EP01101053A 2000-01-27 2001-01-18 Feeding device for the upper slide of a press Expired - Lifetime EP1120236B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10003325A DE10003325C2 (en) 2000-01-27 2000-01-27 Feed device for the top slide of a press
DE10003325 2000-01-27

Publications (3)

Publication Number Publication Date
EP1120236A2 EP1120236A2 (en) 2001-08-01
EP1120236A3 EP1120236A3 (en) 2002-10-30
EP1120236B1 true EP1120236B1 (en) 2005-07-27

Family

ID=7628788

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01101053A Expired - Lifetime EP1120236B1 (en) 2000-01-27 2001-01-18 Feeding device for the upper slide of a press

Country Status (3)

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EP (1) EP1120236B1 (en)
DE (2) DE10003325C2 (en)
PT (1) PT1120236E (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10255693B3 (en) * 2002-11-29 2004-09-23 Maschinen- Und Stahlbau Julius Lippert Gmbh & Co. Kg Method and device for producing ceramic objects such as cups, mugs or the like.
DE10307669B3 (en) * 2003-02-21 2004-10-14 Maschinen- Und Stahlbau Julius Lippert Gmbh & Co. Kg Pressure casting machine for producing beakers and cups comprises a casting station having a first mold side part, an adjustable second mold side part, a mold upper part and a mold lower part
DE102005038583B4 (en) * 2005-08-16 2007-12-27 Schuler Pressen Gmbh & Co. Kg Press drive module and method for providing a press series
DE102006014705B3 (en) * 2006-03-30 2007-07-05 Krauss-Maffei Kunststofftechnik Gmbh Punching apparatus for plastic molding, has drive with spindle/nut combination, where movement of punching device relative to base plate is effected by relative rotation of spindle and nut by electric motor
JP5555172B2 (en) 2007-11-09 2014-07-23 ヴァムコ・インターナショナル・インコーポレイテッド Driving device and method for press machine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2458796A1 (en) * 1974-12-12 1976-06-16 Wilhelm Platz High capacity ball spindle press - has recirculating ball or roller spindles operated by motor driven nut
JPS58502159A (en) * 1981-12-18 1983-12-15 ラルス・インタ−ナショナル・ソシエテ・アノニム・ルクセンブルグ Linear drive with two motors
DE3234520A1 (en) * 1982-09-17 1984-03-22 G. Siempelkamp Gmbh & Co, 4150 Krefeld SPINDLE PRESS
JPS61106221A (en) * 1984-10-30 1986-05-24 Meiki Co Ltd Driving device in injection molding machine
US4870898A (en) * 1988-09-19 1989-10-03 Spencer William D Trash compactor with pivoting platen portion
JP3357358B2 (en) * 1990-07-18 2002-12-16 株式会社アマダ Press machine
IT1241375B (en) * 1990-12-27 1994-01-10 Prima Ind Spa TWO-SPEED LINEAR ACTUATOR WITH HIGH PUSHING FORCE AND HIGH TRANSLATION SPEED FOR AN OPERATING MACHINE, IN PARTICULAR FOR A FOLDING PRESS.
JPH06182599A (en) * 1992-12-16 1994-07-05 Hitachi Shonan Denshi Co Ltd Press controller

Also Published As

Publication number Publication date
PT1120236E (en) 2005-09-30
DE50106834D1 (en) 2005-09-01
EP1120236A2 (en) 2001-08-01
DE10003325C2 (en) 2002-09-12
DE10003325A1 (en) 2001-08-09
EP1120236A3 (en) 2002-10-30

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