DE1048191B - Roughing machine - Google Patents

Description

GERMAN

There are known roughening machines, which essentially consist of an endless run over two rollers Sanding belt and a part to be roughened, for example a sole, feeding and discharging Conveyor belt exist. The part to be roughened is placed on a plate, the plane of which is one of the two Sanding belt rollers affected. The conveyor belt is located above the sanding belt. With such a Machine it is possible to use one of the two surfaces of a sole or another plate-shaped part to roughen completely.

It is also known to put the abrasive, namely a sanding roller, under the workpiece and the To arrange the conveyor belt over this and to ensure that the grinding roller by controlled cams and conveyor belt are moved apart during the advancement of the workpiece, so that the latter, if it is partially roughened, it can be withdrawn by hand by the worker.

It is also known to use leather and elastic materials, such as rubber od. Like., in whole or in part, z. B. only in the area of the heel of a shoe sole, thereby to roughen that straight line, through one in the table for the advance of the to be roughened Good, crosswise to the direction of advance of the same attached narrow slot stepping scratching in perform a quick swinging movement on a horizontal plane, with each scratch moving in a moves in a different direction than the other. The material to be roughened is fed by grooved Cylinder, which act on its underside, while its other side against these cylinders and the scraping is pressed by a device with three more cylinders, which are above the Table attached to the machine and driven at the same speed as the material to be roughened are. In practice it turns out that such a machine can only be used to complete or partial roughening can be used when the material to be roughened is relatively hard. Want mau z. B. roughen so-called crepe, rubber or transparent soles, it happens that these are damaged during the roughening process.

With the machines described above, the removed grinding dust is not perfect away from the workpiece. Crepe, rubber and transparent soles in particular heat up during the roughening process considerable, so that the heated grinding dust settles on the roughened surface again, whereby the subsequent gluing process is impaired.

The invention is based on the object of designing a roughing machine so that optionally the Roughening the entire surface of a sole or the like.

Applicant:

Shoe machine company Hanke Sd Co. mb H. _r Alfeld / Leine, Am Bahnhof 8

Otto Quedenbaum, Bethein (Hann.),
has been named as the inventor

or only part of this area, for example the heel area, can be carried out. Is assumed from the machine described first.

According to the invention it is proposed to provide means for abruptly reversing the direction of movement Provide (reversing) the conveyor belt. Although it is basically sufficient to use a reversible motor to be provided as the drive motor of the conveyor belt and to reverse the direction of rotation of this motor by hand, on the other hand, it is useful to reverse the motor automatically allow. It is advantageous for this to have one in the plane in which the part to be machined is moved through the moving part, e.g. B. a sole, circulated, roughened on its circumference, for example Corrugated roller od. The like. To be arranged, which pivots an arm, which the switching of the Direction of rotation of the conveyor belt drive motor serving contactors influencing contacts controls. To the To be able to change the length of the surface to be roughened, it is ensured that the distance between the - Contacts of the surfaces of the arm or the bearing of the arm can be changed. By repenting the direction of movement of the conveyor belt is achieved when running back the sole that the through the Heat adhering grinding dust from the roughened surface by the grinding tool

+5 is removed wall-free.

The invention is explained schematically on the basis of an exemplary embodiment. It shows

Fig. 1 is a side view of the essential parts of a roughing machine,

Fig. 2 is a side view of the contact control device.

The part to be roughened, for example a sole 1, is placed on a feed plate 2 and a conveyor belt 3, which is guided by two rollers 4 and 5

809 727/61

Claims (3)

is forwarded. Above the conveyor belt 3 there is a vertically displaceable roller 6 which, when it comes into contact with the sole 1, is set in rotation and rotates at the same speed with which the sole is pushed into the machine by hand or through the conveyor belt the machine is moved through. A grinding belt 7 is guided and moved over rollers 8 and 9. The axis 10 of the roller 6 is connected via a gear (not shown), for example a worm drive, to an axis 11 (FIG. 2) on which an arm 12 is fixed. The pivoting range of the arm 12 corresponds to the path of the sole from the beginning of the first contact with the roller 6 to the reversal of the direction of movement of the sole. In the pivoting range of the arm 12, two levers 15 and 16 mounted at 13 and 14 are provided, at the free ends of which a roller 17 and 18 is mounted. On the levers 15 and 16 two springs 23 and 24 or 25 and 26 are fixed each - contacts 21 and 22 or 19 and 20 carrying contacts. Opposite the contacts 19, 20, 21 and 22, contacts 27, 28, 29 and 30 are arranged so that when the levers 15 and 16 are pivoted, first the contact pairs 21-29 and 19-27 and shortly thereafter also the contact pairs 22-30 or 20-28 come into contact with each other. The reversing motor is stopped via the contact pairs 21-29 or 19-27, the change in the direction of rotation of the conveyor belt drive motor is effected via the contact pairs 22-30 and 20-28. These pairs of contacts control contactors (not shown), which in turn carry out the necessary circuits. The bearings 13 and 14 can be shifted with the contacts 21 and 22j 19 and 20 so that the rollers 17 and 18 sooner or later come into contact with the arm 12 pivoted by the roller 6. If the surface to be roughened is to be reduced compared to a selected setting, the bearings 13 and 14 with the contacts are to be moved towards one another; if the area is to be enlarged, they must be removed from each other. This setting can be achieved by means of a spindle with a right-hand and left-hand thread, which can be rotated by a handwheel or the like. With a certain selected setting of the bearings 13 and 14 relative to the arm 12, when a sole or the like is inserted, the following occurs: The sole 1 rotates the roller 6 about its axis 10, whereby the arm 12 is pivoted about its axis 11. If the arm 12 rests, for example, against the roller 17 of the lever 15 under the action of a spring 31 and takes this 11m with it a certain amount, which corresponds to the contact spacings, the contact pair 21-29 is first closed, the conveyor roller drive motor is stopped and thereby that shortly after the pair of contacts 21-29 closes, the pair of contacts 22-30 is also closed, and the drive motor is started up again, now with the opposite direction of rotation. As a result, the conveyor belt 3 now moves in such a way that the sole 1 is guided back again. Correspondingly, the direction of rotation of the roller 6 is reversed and causes the arm 12 to pivot back standing lever 16 against the action of the spring force and closes the pair of contacts 19-27, whereby the conveyor belt drive motor is stopped. Shortly thereafter, the pair of contacts 20-28 is also closed and thus the direction of rotation of the drive motor is reversed. A new sole can now be introduced into the machine. Patent α ν s i> κ ο che: 1. Machine for roughening loose footwear parts, especially shoe soles, with a Grinding tool and a driven, endless supply and removal of the footwear parts Conveyor belt, characterized by means for abruptly reversing the direction of movement (Reversing) the conveyor belt (3). 2. roughening machine according to claim 1, characterized in that as a means for stopping and reversing the conveyor belt (3) in the direction of movement of the shoe parts (1) to be roughened by the passing shoe part (1) rotatable, an arm (12) pivoting roller (6 ) is arranged with a roughened, preferably grooved circumference, whereby the pivot arm (12) via contacts (19-27, 21-29; 20-28, 22-30) controlled by stop levers (15 and 16) stops and reversing contactors of the conveyor belt drive motor can be switched on. 3. Roughening machine according to claim 1 and 2, characterized in that both stop levers (15 and 16) for adjusting the length of the forward and reverse travel of the footwear part (1) can be displaced are stored (Fig. 3). Considered publications:
German Patent Nos. 846 817, 863 774;
U.S. Patent No. 2,715,301. 1 sheet of drawings © 809 727/61 12.58