DE1241098B - Spreading device for preliminary examination and for inserting pneumatic vehicle tires to be soled or retreaded in soleplate frames - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

B 29h

German: 39 a6- 17/36

Number:
File number:
Registration date:
Display day:

1241098
P 32621X / 39 a6
September 19, 1963
May 24, 1967

The invention relates to a spreading device for the preliminary examination and for the insertion of Pneumatic vehicle tires to be soled or retreaded into appropriately aligned one-piece Sole frame with horizontally arranged, preferably rotatable and by means of a pressure cylinder mutually movable shafts fixed on one side, on which perpendicular to the shaft axis, preferably cross-shaped, cantilever for radially adjustable or adjustable brackets with expanding claws are and at least some of the brackets with the spreading claws on the booms Locks is lockable, according to patent 1224 477, at least one hydraulically or pneumatically operated pressure cylinder for the radial adjustment of the Spreading claws is provided.

It is known to equip spreading devices for pneumatic vehicle tires with pressure cylinders through which pivotably mounted spreading claws can be placed on the tire bead via lever gears. In these known spreader devices, the spreader bars are attached to swiveling cantilever arms, which leads to complex constructions at high expansion pressures and no parallel guidance of the allows inner and outer spreading.

To eliminate the specified disadvantages, in the above-mentioned spreading device according to Invention proposed that the piston rod of the pressure cylinder tangentially via a lever arm a centrically and rotatably mounted disc is articulated on the shaft holder, with which each expanding claw the inner side is connected via a steering lever.

This ensures that the otherwise customary application of the spreading ropes by hand is flawless Centering of the tires can be saved. The picking up and spreading of the tires can thus can be carried out faster with better centering and thus also with greater tire protection.

An exemplary embodiment of the spreading device and the mode of operation will be described with reference to the drawing explained.

F i g. Figures 1 and 2 show in side and elevation an unequipped spreader;

F i g. 3 shows the spreading device with the tire 1 placed on it and a retracted molding box 2;

F i g. 4 and 5 show details of the spreading device.

The spreading device consists of a basic box 3 in which, for example, a compressed air compressor for driving a pressure cylinder 4 and a cylinder (not shown) that drives the shaft 5, an expanding device for the preliminary examination and for
Insertion of to be resoled or
retreaded pneumatic vehicle tires in
Sole frame

Addendum to the patent: 1 224 447

Applicant:

Peters & Co. Inh. W. F. Peters and A. Svetlik,

Zirndorf via Nuremberg, Sandäckerstr. 2-8

Named as inventor:

Ludwig Praml, Zirndorf via Nuremberg

is ordered. The shaft 5 penetrates the shaft holder 6, which carries the boom 7. On the boom? Spreading claws 8 are pushed on using sleeves 9. Cantilever arms 10 rigidly connected to the shaft 5 carry adjustable expanding claws 11. A disk 12 is rotatably placed on the shaft holder 6 and connected to the piston rod 14 of the pressure cylinder 4 via a lever arm 13. On the disc 12 steering levers IS are pivoted rotatably in the edge zone, which in turn are connected to the sleeves 9 for the spreading claws 8;

Guide pins 16 are rigidly attached to the sleeves 9 and engage in matched sleeves 17 connected to the expanding claws so that the expanding claws 11 are inevitably moved radially with the claws 8.

The way in which the spreading device works is as follows: First, a tire 1 is hung over the upper claws 8, 11 and then pressure is applied to the cylinders 4. The lever arm 13 is thus moved in such a way that the disk 12 (FIG. 4) moves clockwise and thus presses the expanding claws 8, 11 outwards until they rest evenly on the bead of the tire 1. Now the actual spreading process can take place by placing the shaft 5 with the booms 10 and the spreading claws 11 opposite the booms? is shifted axially with the spreading claws8. The spread end position is shown in FIG. 3 can be seen. In this spread position the can now open

709 587/245

Claims (2)

A molding box 2 arranged on a carriage 18 is pushed over the spread tire 1 and the tire 1 is introduced into the molding box 2 by returning the shaft 5 to the position shown in FIG. The drive of the shaft 5, like the drive of the expanding claw 8, is expediently carried out by means of hydraulic or pneumatic pressure cylinders. Patent claims: 1. Spreading device for the preliminary examination and for the insertion of soles to be soled or to be retreaded Pneumatic vehicle tires in appropriately aligned one-piece sole frame with horizontally arranged, preferably rotatable and movable against one another by means of a pressure cylinder, Shafts fixed in place on one side, preferably at right angles to the shaft axis Cross-shaped, cantilever for radially adjustable brackets arranged with spreading claws are and at least some of the retaining bars with the spreading claws on the booms is lockable by locking, according to Patent 1224 477, at least one hydraulic or pneumatically operated pressure cylinder is provided for radial adjustment of the spreading claws, characterized in that the piston rod (14) of the pressure cylinder (4) has a Lever arm (13) tangentially on a centrally and rotatably mounted on the shaft holder Disc (12) is articulated with each expanding claw (8) of the inner side via a steering lever (15) is connected. 2. Spreading device according to claim 1, characterized in that the spreading claws (11) on the arms (10) remote from the shaft holder (6) via guide pins (16) with the from Pressure cylinder (4) driven expanding claws (8) are radially rigidly connected. Considered publications:
French Patent No. 1232,975;
U.S. Patent No. 2,905,435. 1 sheet of drawings 709 587/245 5.67 © Bundesdruckerei Berlin