DE189756C

DE189756C -

Info

Publication number: DE189756C
Application number: DENDAT189756D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die Erfindung betrifft eine Maschine zum Aufziehen von Radreifen aus Metall in kaltem Zustande. Es sind bereits Maschinen dieser Art bekannt geworden, welche mit Hilfe von Klemmbacken arbeiten, die den Reifen seitlich zusammenpressen und in Blöcken verschiebbar gelagert sind; da bei diesen Ausführungsformen jedoch lediglich der eine der beiden Blöcke verschiebbar ist', während derThe invention relates to a machine for mounting wheel tires made of metal in the cold Conditions. There are already machines of this type become known, which with the help of Work clamping jaws that press the tire together laterally and can be moved in blocks are stored; since in these embodiments, however, only one of the two blocks can be displaced, while the

ίο andere fest mit dem Maschinengestell in Verbindung steht, ergibt sich der Nachteil, daß die Beanspruchung in ungünstiger Weise sich verteilt und insbesondere auf den festgehaltenen Block eine nachteilige Kippwirkung sich geltend macht.ίο others firmly connected to the machine frame stands, there is the disadvantage that the stress is unfavorable distributed and in particular a detrimental tilting effect on the retained block asserts itself.

Dieser Übelstand wird gemäß der Erfindung dadurch beseitigt, daß beide Blöcke zugleich und in entgegengesetzter Richtung verschiebbar angeordnet sind. HierdurchThis drawback is eliminated according to the invention in that both blocks at the same time and are arranged displaceably in the opposite direction. Through this

20. verteilt sich die Arbeitsleistung gleichmäßig auf die beiden Hälften des Radumfanges, so daß einerseits ein geringerer Verschleiß der Klemmbacken und eine gleichmäßigere Beanspruchung der einzelnen Maschinenteile eintritt und andererseits auch der aufzuziehende Radreifen einer gleichmäßigeren Wirkung ausgesetzt wird.20. the work is evenly distributed between the two halves of the wheel circumference, so that on the one hand there is less wear of the clamping jaws and more uniform wear The individual machine parts are stressed and, on the other hand, also the one to be opened Tire is exposed to a more even effect.

Der Erfindungsgegenstand ist auf beiliegender Zeichnung in einem Ausführungsbeispiel veranschaulicht, und zwar zeigtThe subject of the invention is shown in the accompanying drawing in an exemplary embodiment illustrates, namely shows

Fig. ι eine Draufsicht der Maschine,Fig. Ι a top view of the machine,

Fig. 2 einen Längsschnitt durch die Mittelachse derselben,Fig. 2 is a longitudinal section through the central axis of the same,

Fig. 3 einen Teil der Draufsicht mit in der Maschine eingespanntem, abgebrochen gezeichnetem Rade.3 shows a part of the top view with the broken-off drawing clamped in the machine Wheel.

Fig. 4 ist ein Querschnitt nach Linie x-x der Fig. 3.FIG. 4 is a cross section along line xx in FIG. 3.

Der Rahmen der Maschine besteht aus den ■ Längsteilen 1 und 1 ^a, in deren Führungen 2 und 2^a die Einsatzblöcke 3, 3* gleiten. Die Längsteile I und I ^a des Rahmens sind durch eine Stirnwand 4 und eine weitere Querwand S miteinander verbunden; diese Stirnwand 4 sowie die Querwand 5 bilden zugleich das Lager für die Welle 6. Der ganze Rahmen wird durch Füße 7 getragen. Die Welle 6 hat Rechts- und Linksgewinde 8, 9, welches bereits nahe an den äußeren Enden der Welle beginnt und sich bis in deren Mitte erstreckt. Mit diesem Rechts- und Linksgewinde stehen die Innengewinde 10, io^a, welche in Längsbohrungen der Einsatzblöcke 3, 3^a vorgesehen sind, in Eingriff, so daß eine Drehung der Welle in der einen Richtung eine gegenseitige Annäherung der beiden Blöcke bewirkt, während eine Drehung in der anderen Richtung die Blöcke voneinander entfernt. Das innere freie Ende der Welle 6 wird durch ein Lagerstück 11 gestützt undThe frame of the machine consists of the ■ longitudinal parts 1 and 1 ^a , in whose guides 2 and 2 ^a the insert blocks 3, 3 * slide. The longitudinal parts I and I ^{a of} the frame are connected to one another by an end wall 4 and a further transverse wall S; this end wall 4 and the transverse wall 5 at the same time form the bearing for the shaft 6. The entire frame is supported by feet 7. The shaft 6 has right-hand and left-hand threads 8, 9, which already begin close to the outer ends of the shaft and extend to the center thereof. With this right-hand and left-hand thread are the internal threads 10, io ^a , which are provided in longitudinal bores of the insert ^{blocks 3, 3 a} , in engagement, so that a rotation of the shaft in one direction brings about a mutual approach of the two blocks, while a rotation in the other direction the blocks away from each other. The inner free end of the shaft 6 is supported by a bearing piece 11 and

Claims

carries a bevel gear 12 which meshes with a second bevel gear 13; the latter is wedged on a transverse shaft 15 and at the same time has a fixed connection with a star wheel or ratchet wheel 14. A hand lever 16 rotatably arranged on the shaft 15 carries a double pawl 17, which is adjustable on two sides, so that the ratchet wheel 14 can be set in motion in one direction or the other depending on the setting of this pawl and the shaft with the mediation of the bevel gear 6 is reversed in one direction or the other, whereby the insert blocks 3 and 3 ″ are brought closer to or away from one another. Each of the two blocks has a recess, the walls 19 of which run obliquely to the shaft axis; the bottom 20 of these recesses is curved in this way designed that that end of the bottom which is located on the edge facing the other block is lower than the outer end narrow outer ends of these jaws have lateral lugs 24 to the wheel to be clamped ifen to give a condition. At the ends of the blocks facing each other, small recesses 25 are provided in which the ends of a connecting bridge 26 engage, the latter extending above the shaft 6 in the longitudinal direction of the machine and intended on the one hand to protect the shaft from contact with the wheel tire and on the other hand, press the wheel tire 27 against the wheel rim 27 to 4P. Cross bars 28, which are fastened by means of hooks or lugs 29, hold the wheel rim 27 ″ in place. The middle cross bar carries a block on its lower surface which protrudes downwards in order to lie against the wheel to be machined, while the other two cross bars are arranged in those places where they can lie against the inside of the wheel rim, so that it is clamped by the three cross bars. The flanges 22 hold the jaws in place; the latter, in conjunction with the lateral lugs 24, prevent that Turning or lifting of the wheel tires takes place or that the wheel spider is clamped in place of the wheel tire. The end faces of the bridge piece 26 are exposed, so that when the wheel to be machined is clamped between the clamping jaws below the crossbar 28, that on the bridge piece $ 0 applies making the pressure the same on both sides. Now move the blocks in one direction or the other shifted, the bridge piece remains in the same place, while the blocks can slide underneath it. This effectively prevents rotation of the wheel tire, while, on the other hand, if the bridge piece is rigidly fastened to the blocks and if the latter moves along with the latter, entrainment of the wheel tire would not be ruled out. Patent-A ν Proverbs:

1. Machine for mounting wheel tires made of metal in the cold state with the help of clamping jaws which compress the tire laterally and are mounted displaceably in blocks, characterized in that both blocks (3, 3 ^a ) are arranged displaceably at the same time and in opposite directions.

2. Embodiment of the machine according to claim 1, characterized in that the clamping jaws are provided at their outer ends with mutually facing lugs (24) to allow the clamped To give wheel tires an edition.

3 embodiment of the machine according to claim 1, characterized in that _go the facing ends of the two blocks have recesses (25) in which a plate (26) is loosely mounted so that the same undisturbed when changing the relative position of the two blocks on Able to stay.

1 sheet of drawings.