DE255196C

DE255196C -

Info

Publication number: DE255196C
Application number: DENDAT255196D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Bei den Pressen mit in einer geschlossenen Bahn schrittweise wandernden Formen, insbesondere bei den Drehtischpresse-n, sollen die an sich bekannten Vorrichtungen zum Vorpressen und Pressen des in die Formen gefüllten Preßgutes, zum Ausdrücken der Preßlinge aus den Formen und zum Senken der Stempel in möglichst einfacher und doch zweckentsprechender Weise angetrieben werden. DieIn the case of presses with molds moving gradually in a closed path, in particular in the case of the turntable presses, the pre-pressing devices known per se should be used and pressing the material to be pressed into the molds, for pressing the pressed parts out of the molds and for lowering the Stamp are driven in the simplest possible yet appropriate manner. the

ίο bis jetzt bekannten Antriebsvorrichtungen für Pressen sind jedoch zu wenig einheitlich, in ihren Teilen nicht genügend übersichtlich und zugänglich, außerdem zu verwickelt und zu teuer in der Herstellung und im Betriebe.ίο previously known drive devices for However, presses are not uniform enough, and their parts are not sufficiently clear accessible, too involved, and too expensive to manufacture and operate.

Gemäß der Erfindung sollen diese Nachteile nach Möglichkeit beseitigt werden.According to the invention, these disadvantages are to be eliminated as far as possible.

Den Gegenstand der Erfindung bildet eine Antriebsvorrichtung für Pressen, bei der eine sich drehende Hauptwelle eine Hauptpendelwelle und durch diese gegebenenfalls auch eine Nebenpendelwelle in schwingende Bewegung versetzt, von denen aus die einzelnen Vorrichtungen zum Vorpressen und Pressen des Preßgutes, zum Ausdrücken der Preßlinge und zum Zurückholen der Stempel durch Exzenter oder Hebel angetrieben werden.The object of the invention forms a drive device for presses, in which a rotating main shaft a main pendulum shaft and through this possibly also a secondary pendulum wave set in oscillating motion, from which the individual Devices for pre-pressing and pressing the material to be pressed, for pressing out the pressed parts and driven by eccentrics or levers to retrieve the punches.

Es ist zwar schon bekannt, Wellen mit schwingender Bewegung (Pendelwellen) zum Antrieb der Preßvorrichtung zu verwenden, jedoch werden hierbei die Vorrichtungen zum Vorpressen des Preßgutes und zum Ausdrücken der Preßlinge nicht von der Pendelwelle, sondern von der sich drehenden Hauptwelle aus bewegt, und die Pendel welle ist neben dem Drehtisch so gelagert, daß die Kolben für die Hauptpressung mittels schwerer Hebelwerke angetrieben werden müssen. Der Aufbau dieser Pressen ist verwickelt, die Presse selbst schwer zugänglich, teuer und gestattet nur langsamen Gang. Bekannt sind auch Pressen, bei denen die Kolben für die Hauptpressung von der sich drehenden Hauptwelle, die Vorrichtung zum Ausdrücken der Preßlinge dagegen von einer Pendelwelle aus angetrieben werden. Auch diese Pressen haben die angeführten Nachteile.Although it is already known, waves with oscillating motion (pendulum waves) for To use drive of the pressing device, however, this will be the devices for Pre-pressing of the material to be pressed and for pressing out the pressed parts not from the pendulum shaft, but moved from the rotating main shaft, and the pendulum shaft is next to that Turntable mounted in such a way that the pistons for the main pressing are carried out by means of heavy lever mechanisms need to be driven. The construction of these presses is involved, the press itself difficult to access, expensive and only allows slow walking. Presses are also known in which the pistons for the main pressure from the rotating main shaft, the device to express the compacts, however, are driven by a pendulum shaft. These presses also have the ones listed Disadvantage.

Demgegenüber ist die Antriebsvorrichtung für Pressen nach der Erfindung durch vorteilhaftere. Anordnung und Ausbildung der Hauptpendelwelle und durch die Anordnung einer dieser ähnlich ausgebildeten Nebenpendelwelle (für Pressen mit zweiseitigem Druck) gekennzeichnet. Die Anordnung der Hauptpendelwelle ermöglicht es, durch ein Exzenter den Kolben für die Hauptpressung unmittelbar in der Preßrichtung anzutreiben. Für Drehtischpressen ergibt dies zwei Ausführungsformen des Erfindungsgegenstandes, indem die Hauptpendelwelle entweder ungefähr radial zum Drehtisch oder ungefähr tangential zum Mittelkreis von dessen Formen gelagert werden kann. Die Ausbildung der Haupt-In contrast, the drive device for presses according to the invention is more advantageous. Arrangement and design of the main pendulum shaft and by the arrangement of one of these similarly designed secondary pendulum shaft (for presses with double-sided printing). The arrangement of the main pendulum shaft makes it possible to drive the piston for the main pressing directly in the pressing direction by means of an eccentric. For Rotary table pressing results in two embodiments of the subject matter of the invention by the main pendulum shaft either approximately radially to the turntable or approximately tangentially to the center circle of whose shapes can be stored. The training of the main

pendel welle ist durch die Anordnung eines Exzenters zum Antrieb des Kolbens für die Hauptpressung und von Hebeln zum Antrieb der Nebenpendelwelle und der noch später zu erwähnenden übrigen Vorrichtungen näher gekennzeichnet. Bei Pressen mit zweiseitigem Druck, welche mit einer Hauptpendelwelle und einer Nebenpendelwelle versehen sind, treibt jede von diesen einen Kolben für diePendulum shaft is due to the arrangement of an eccentric to drive the piston for the Main compression and levers to drive the secondary pendulum shaft and that later Other devices to be mentioned are identified in more detail. For presses with two-sided Pressure, which are provided with a main pendulum shaft and a secondary pendulum shaft, each of these drives a piston for the

ίο Hauptpressung an, während die übrigen Vorrichtungen teils von der einen, teils von der anderen Pendelwelle angetrieben werden. Den Antrieb . von der sich drehenden Hauptwelle empfängt immer die schwingende Hauptpendelwelle, und zwar gewöhnlich in an sich bekannter Weise durch eine Pleuelstange, die einerseits an eine Kurbel der Hauptwelle, andererseits an den Zapfen eines Hebels oder Hebelpaares der Haupt pendel welle angelenkt ist. Eine besonders günstige Ausführungsform des Erfindungsgegenstandes ergibt die Verbindung der neuen Antriebsvorrichtung mit einer bekannten Drehtischpresse mit parallel zur Preßrichtung stehender Hauptwelle, wobei aber die Pleuelstange, welche die Hauptpendelwelle . von der Hauptwelle aus antreibt, allseitig gelenkig ausgebildet werden muß, sei es, daß die Kurbel der Hauptwelle und der Zapfen am Hebel der Pendelwelle kugelförmig ausgebildet sind oder daß zwei Hooksche Schlüssel oder kardanisch^ Gelenke in die Pleuelstange eingeschaltet werden. Dies ergibt eine besonders einfache, billige, betriebssichere und vorteilhafte Bauart der Pressen. Die erhöhte Betriebssicherheit beruht hierbei mit darauf, daß die Kurbel zum zwangläufigen Vorrücken des Drehtisches mit den Antriebsvorrichtungen für Vorpressung, Pressung sowie mit dem Ausdrücker und Stempelsenker in zwangläufiger Hebelverbindung steht. Hierdurch wird ein falsches Zusammensetzen der Antriebsvorrichtung verhütet, wie es möglich war, solange jene Verbindung durch Zahnräder vermittelt wurde, die an unrichtiger Stelle zusammengesetzt werden konnten. Außerdem fallen durch diese zwangläufige Hebelverbindung die bei Zahnrädern vorkommenden Stöße und die starke Abnutzung einzelner Zähne fort, so daß die Drehung des Formentisches nunmehr schneller ausgeführt und damit die Leistungsfähigkeit der Presse erhöht werden kann.ίο Main pressing on, while the other devices driven partly by one and partly by the other pendulum shaft. The drive. from the rotating main shaft always receives the oscillating main pendulum shaft, usually in a manner known per se through a connecting rod, on the one hand to a crank of the main shaft, on the other hand to the pin of a lever or Lever pair of the main pendulum shaft is articulated. A particularly favorable embodiment of the subject matter of the invention results in the connection of the new drive device with one known turntable press with the main shaft parallel to the pressing direction, but with the connecting rod, which is the main pendulum shaft. drives from the main shaft in all directions must be articulated, be it that the crank of the main shaft and the pin are spherical on the lever of the pendulum shaft or that two Hooks' keys or cardanic ^ joints are switched into the connecting rod. This makes one special simple, cheap, reliable and advantageous design of the presses. The increased Operational reliability is based on the fact that the crank for inevitable advancement of the turntable with the drive devices for pre-compression, pressing as well as with the The extractor and die countersink are in an inevitable lever connection. This will prevent incorrect assembly of the drive device, as was possible, as long as that connection was mediated by gears that were in the wrong place could be put together. Also fall through this inevitable lever connection the impacts occurring with gears and the heavy wear and tear of individual teeth continue, so that the rotation of the mold table is now carried out faster and thus the efficiency the press can be increased.

Die Antriebsvorrichtung nach der Erfindung ist ohne Schwierigkeit anwendbar für Pressen mit wagerecht oder senkrecht laufendem Drehtisch, ferner für Pressung von einer oder von beiden Seiten des Drehtisches, ebenso können auch Vorpreßstempel, Ausdrückkolben und Stempelsenker je nach Erfordernis von der einen oder anderen Seite des Drehtisches wirken und angetrieben werden.The drive device according to the invention can be used for presses without difficulty with horizontally or vertically rotating turntable, also for pressing one or from both sides of the turntable, also pre-press rams, ejector pistons and die countersinks from one side or the other of the turntable as required act and be driven.

In den Fig. 1 bis 8 sind zwei Ausführungsformen der Erfindung veranschaulicht. In Figs. 1 to 8, two embodiments of the invention are illustrated.

Die Fig. 1 bis 4 stellen eine Drehtischpresse mit ungefähr tangential zum Mittelkreis der Formen des Drehtisches gelagerter Hauptpendelwelle dar, und zwar zeigtFigs. 1 to 4 represent a rotary table press with the main pendulum shaft mounted approximately tangentially to the center circle of the forms of the turntable represents, namely shows

Fig. ι einen Schnitt durch den Drehtisch, die Preßvorrichtung und den Stempelsenker im Aufriß,Fig. Ι a section through the turntable, the pressing device and the die countersink in elevation,

Fig. 2 einen Schnitt durch Hauptwelle und Antrieb im Aufriß,Fig. 2 is a section through the main shaft and drive in elevation,

. Fig. 3 einen Schnitt in Höhe der Nebenpendelwelle im Grundriß und. Fig. 3 is a section at the level of the secondary pendulum wave in plan and

Fig. 4 einen Schnitt in Höhe der Hauptpendelwelle im Grundriß dar.Fig. 4 is a section at the level of the main pendulum wave in plan.

Die Presse nach Fig. 1, 2, 3 und 4 besteht im wesentlichen aus dem Untergestell 1, dem Obergestell 2, den beide miteinander verbindenden Säulen 3, 4, 5, dem um die Säule 3 drehbaren Formentisch 6, der bei 7 und 8 im Untergestell und bei 9 im Obergestell drehbar gelagerten Hauptwelle 10 (Fig. 2), dem Füllbehälter 11 und den noch später zu beschreibenden Vorrichtungen zur Herbeiführung der Vor- und Hauptpressung, zum Antrieb des Ausdrückers für die Formlinge und des Stempelsenkers.The press of Fig. 1, 2, 3 and 4 consists essentially of the base 1, the Upper frame 2, the two connecting columns 3, 4, 5, the one around the column 3 rotatable mold table 6, which is rotatable at 7 and 8 in the lower frame and at 9 in the upper frame mounted main shaft 10 (Fig. 2), the filling container 11 and the one to be described later Devices for bringing about the pre-pressing and main pressing, for driving the ejector for the moldings and the Die countersink.

Der Drehtisch 6 hat beispielsweise acht Formen, in denen die Stempel 12 auf und nieder verschiebbar sind. Diese Stempel werden durch eine der bekannten Vorrichtungen in jeder Stellung nachgiebig festgehalten.The turntable 6 has, for example, eight shapes in which the stamp 12 and can be moved down. These stamps are made by one of the known devices Resiliently held in every position.

Die Hauptwelle 10 wird in bekannter Weise, z. B. durch konische Räder 13, angetrieben. Sie rückt durch eine Kurbel 14 oder eine der sonst bekannten Vorrichtungen den Drehtisch 6 bei jeder Umdrehung um eine Formentfernung weiter und bewegt in dem Füllbehälter ii ein Rührwerk 15. Zwischen ihren Lagerungen 7 und 8 bildet sie eine Kurbel 16, die durch eine Pleuelstange 17 mit einem Zapfen 18 gelenkig verbunden ist. Die Kurbel 16 und der Zapfen 18 sind in bekannter Weise kugelig ausgebildet, um die allseitige Gelenkigkeit der Pleuelstange 17 zu sichern. Der Zapfen 18 liegt zwischen zwei Hebeln 19 und 20, die auf einer Hauptpendelwelle 21 sitzen. Letztere ruht im Untergestell 1 in Lagern 22, 23 und 24 und ist ungefähr tangential zum Mittelkreis der Formen des Drehtisches 6 sowie senkrecht ' zur Preßrichtung gelagert. Außer den Hebeln 19 und 20 trägt die Pendelwelle 21 noch ein Exzenter 25 und zu dessen beiden Seiten die Hebel 26 und 27, in Verbindung mit dem Hebel 26 den Hebel 28 und außerdem den Hebel 29. An das Exzenter ist der untere Preßkolben 30 angelenkt, der im Untergestell 1 bei 31 verschiebbar gelagert ist. Der Hebel 28 ist mit einem Zapfen 39 versehen, den die Stange 40 mitThe main shaft 10 is in a known manner, for. B. by conical wheels 13, driven. It moves the turntable 6 by a crank 14 or one of the otherwise known devices one mold distance further with each revolution and moves in the filling container ii an agitator 15. Between its bearings 7 and 8 it forms a crank 16, which is articulated to a pin 18 by a connecting rod 17. The crank 16 and the pin 18 are spherical in a known manner to the all-round To secure the articulation of the connecting rod 17. The pin 18 lies between two levers 19 and 20, which sit on a main pendulum shaft 21. The latter rests in the base 1 in Bearings 22, 23 and 24 and is approximately tangent to the center circle of the turntable's shapes 6 and perpendicular 'to the pressing direction. Except for levers 19 and 20 the pendulum shaft 21 still has an eccentric 25 and on both sides of which the levers 26 and 27, in connection with the lever 26, the lever 28 and also the lever 29. The lower plunger 30 is hinged to the eccentric, which is slidably mounted at 31 in the underframe 1. The lever 28 is with a Pin 39 is provided, which the rod 40 with

Claims

and let it move down. These stamps are resiliently held in any position by one of the known devices. The main shaft 83 is in a known manner, for. B. driven by conical wheels 86. By means of a crank 87 or one of the other devices commonly used for this purpose, it advances the turntable 79 by one mold distance with each revolution and moves an agitator 88 in the filling container 84 an arm 90 is articulated to a pin 91. The crank 89 and the pin 91 are designed as ball bearings in order to ensure the mobility of the arm 90 in all directions. However, the same purpose can also be achieved by using the known double universal joints. The pin 91 is attached to two levers 92 and 93, which sit on a main pendulum shaft 94. The latter is rotatable in the underframe 73 at 95, 96 and 97 and is mounted in an approximately radial direction to the turntable and perpendicular to the pressing direction. In addition to the levers 92 and 93, the pendulum shaft 94 also carries an eccentric 98 and a lever 99 and a lever 100. The lever 99 is firmly connected to the lever 93, the Hebei 100 to the lever 92. The lower plunger 101 is articulated to the eccentric 98 and is mounted displaceably in the subframe 73 at 102. The lever 100 is provided with a pin 103, which the rod 104 connects in an articulated manner to a pin 105 fastened in the plunger piston 106. The plunger countersink piston 106 is mounted displaceably in the subframe 73 at 107 and has two tong-like arms. The lever 99 is provided with two pins 108 and 109. The ejector piston 110, which is slidably mounted in the subframe 73 at in, is hinged to the pin 108. In the upper frame 74, a secondary pendulum shaft 114 is rotatably mounted at 112 and 113, on which a lever 115, an eccentric 116 and a lever 117 are attached. The lever 115 carries a pin 118, which a link rod 119 connects to the pin 109 of the lever 99 in an articulated manner. At the eccentric 116 is the. hinged upper plunger 120 which is slidably mounted in a press box 121 fixedly connected to the upper frame 74. The lever 117 has a pin 122 which the articulated rod 123 connects in an articulated manner to a pin 124 which is fastened to the upper spring plate 125 of the pre-pressing device. The pre-compression device, which does not form part of the invention, consists of the pre-compression piston 126 and two rods 127 and 128 attached to it, on which the lower spring plate 129 and the upper (125) sit. A spring 130 is clamped between these spring plates 129 and 125. The lower spring plate 129 is fixed immovably on the rods 127, 128, while the upper spring plate 125 can be displaced thereon and can be adjusted upward by the screw nuts 131 and 132. As a result of this adjustment of the spring plate 125, the spring 130 can be tensioned. The spring plate 125 is slidably mounted in the upper frame 74 at 133, the prepressing piston 126 in the prepressing box 134. The prepress box 134 is connected to the filling container 84 through a wide opening and is fastened to the upper frame 74. The press described works essentially in the same way as that according to FIGS. 1 to 4. The following need only be briefly noted: When the main shaft 83 rotates, the crank 89 displaces the main pendulum shaft through the connecting rod 90 and the levers 92, 93 94 in swinging motion. As a result, lever 100 in turn sets the die countersink, eccentric 98 sets the lower plunger 101 and lever 99 once sets the expression no, the other time also the secondary pendulum shaft 114 through the rod 119 and lever 115, the latter also receives an oscillating movement and sets the upper plunger 120 through the eccentric 116 and the pre-plunger 126 through the lever 117 and the rod 123 in motion. Godfather ν τ claims:

1. Drive device for presses with

Shapes gradually wandering in a closed path, characterized by a perpendicular to the pressing direction main pendulum shaft (21 or 94), which through an eccentric (25 or 98) directs the main compression piston (30 or roi), the ejection piston and, on the other hand, drives the die countersink by means of lever mechanisms and which are driven by lever mechanisms (26, 27, 56, 52, 53 or 99, 119, 115) a second, on the opposite side of the mold table horizontal pendulum shaft (50 or 114) set in motion by an eccentric (51 or 116) the counter-compression piston (58 or 120) directly, the pre-compression piston on the other hand drives through the mediation of leverage.

2. Embodiment of the drive device for presses according to claim 1, characterized characterized in that the main pendulum shaft is approximately tangential to the center circle of the

the pin 41 of one arm of an angle lever rotatably mounted at 42 in the underframe 1 articulately connects. The pin 43 on the other arm of this angle lever connects the rod 44 in an articulated manner with one Pin 45 in the die countersink piston 46, which in turn is displaceable in the underframe 1 at 47 is mounted and two pincer-like arms reaching over a lower piston attachment Has. The lever 29 is provided with a pin 32, a rod 33 with the pin 34 of the one arm of an angle lever rotatably mounted at 35 in the underframe ι articulated connects. The ejector piston 37 is hinged to the pin 36 of the other arm of this angle lever, which in turn is slidably mounted in the base 1 at 38.

In the upper frame 2, a secondary pendulum shaft 50 is rotatably mounted at 48 and 49, on the an eccentric 51 sits, on both sides of which the levers 52 and 53 are attached, while a lever 54 is attached to one end of the shaft 50. The levers 52 and 53 are through a pin 55 connected to each other, which in turn is the rod 56 with the between the levers 26 and 27 pivotally connects lying pin. At the eccentric 51 is the upper plunger 58 is articulated and is displaceable in the press box 59 on the upper frame is stored. The lever 54 is provided with a pin 60, which a rod 61 with a pin 62 of the upper spring plate 63 of the pre-pressing device articulated.

The pre-press device, which does not form part of the invention, consists of a pre-press ram 64 and two attached rods 65 and 66, on which the lower Spring plate 67 is stuck, while the upper

(63) slidable and adjustable upwards by means of screw nuts 68 and 69 the rods 65 and 66 is mounted so that the spring 70 can thereby be retightened. The spring plate 63 is in the upper frame 2 at 72, the prepress ram 64 is slidably mounted in the prepress box 71. The latter is with the Filling container 11 is connected by a wide opening and fastened to the upper frame 2.

When the main shaft 10 rotates, the crank 14 moves the turntable 6 every revolution to divide the shape in the direction of the arrow. While the turntable 6 is stationary, takes a form of material to be pressed from the filling container 11; in a second filled one The pre-pressing takes place in a third form, the pressed part receives the main pressing in a third form, the finished molding is pressed out of a fourth, and the The punch 12 is pulled down by the punch countersink 46, which is all going on at the same time. The pre-compression box 71 is filled with pressed material from the filling container 11 by either the turntable takes it in as it moves forward or the agitator 15 such a thing.

The rotating main shaft 10 is displaced by the crank 16 and the connecting rod 17 the levers 19, 20 and thus the main pendulum shaft 21 in an oscillating motion, whereby firstly the lever 28 through the rod 40, the angle lever and the rod 44 the punch plunger 46 moves up and down, which with its pincer-like arms the stamp 12 in turn grabs and pulls down; second, the lever 29 through the rod 33 and the angled lever moves the ejector piston 37 up and down, which the Punches 12 one after the other up to the surface of the molding table lifts and thus pushes the moldings out of the molds; third, that Eccentric 25 moves the lower plunger 30 up and down, the when the rise Lifts punch 12 and thereby exerts the main pressure from below; fourth, the Hebei 26, 27 through the rod 56 the levers 52, 53 and also the secondary pendulum shaft 50 in offset oscillating movement, so that on the one hand the eccentric 51 the upper plunger 58 moves up and down, which exerts the main pressure from above and on the other hand the lever 54 moves the pre-pressing device up and down by the rod 61 and the prepress ram 64 when descending to be pressed material from the prepress box 71 into the one below presses standing form into it.

5 to 8 show a rotary table press with a main pendulum shaft mounted approximately radially to the rotary table shows, namely:

Fig. 5 is a section through the main shaft and drive in elevation,

6 shows a section through the pressing device in elevation,

Fig. 7 is a section at the level of the secondary pendulum wave in plan and

Fig. 8 is a section at the level of the main pendulum wave in plan.

The press of Fig. 5, 6, 7 and 8 consists essentially of the base 73, the Upper frame 74, the two columns 75, 76, 77 connecting one another, the one around an axis 78 rotatable mold table 79, the one at 80 and 81 in the lower frame and at 82 in the upper frame rotatably mounted main shaft 83, the filling container 84 and the later to be described Devices for driving the pre-press and main press ram, the extractor for the Moldings and the die countersink.

The turntable 79 has a number, e.g. B. eight forms in which punch 85 is on

Forms of the turntable is stored (Fig. Ι to 4).

3. Embodiment of the drive device for presses according to claim 1, characterized characterized in that the main pendulum shaft is mounted approximately radially to the turntable.

4. embodiment of the drive device according to claim 1, wherein the Drive shaft is mounted parallel to the pressing direction, characterized in that the Power transmission from the drive shaft (10 or 83) to the main pendulum shaft (21 or 94) is carried out by a double-articulated arm (17 or 90).

1 sheet of drawings.