DE2021376A1 - Device for actuating the pinching scissors of a tip pinching machine - Google Patents

Description

Dipl. "Ing. Heinz Bardehle Λ 2Ό2Ί376

Paisnfanwalf

D-8 Munich 20, P.O. Box 4

Telephone 08IJ / 29 25 55,;

Munich, April 30, 187Ö S.

My Seichen: P 946

Applicant: German United
Shoe machines GmbH

6 Frankfurt M 9
Friedrich Ebert Annex 13-31

Device for actuating the pinching scissors of a tip pinching machineν

The invention relates to a device for actuating the pinching scissors of a pointed pinching machine, in which the pinching scissors are guided into grooves on their fixed guide tube. In this case, the slots in known pointed pinching machines of this type give the pinching scissors such a guide that m the scissor parts rotate inward about a common axis. Before this reeving process, the pinch scissors are brought into a starting position with a scissor head, for which purpose the scissors head is moved forward with the pinch scissors in the direction of the shoe to be pinched. After pinching the cutter head is moved back accordingly. It is necessary to move the shear head forwards and backwards so that there is even space to insert a shoe to be pinched into the machine. .

The invention is based on the object of saving the process of moving the shaving head back and forth. According to the invention

109848/0099

■ ^BAD original

this is done by the fact that the grooves each in one to the outside bent branch with such an inclination to the longitudinal axis of a ssu pinching shoe end that when you pull back the pinching scissors the two parts of the scissors run away to the side from the axis "around which they rotate when reeving".

This sideways movement of the scissor parts causes the scissors torn apart, so to speak, "thereby creating the necessary space is created «in order to be able to insert a new shoe. It is not necessary to retract the shear head.

It is advisable to give the branches such a slanting stretcher the length of the sideways movement of the scissor parts corresponds approximately to that of the retraction movement. This results in the advantage "that when they reach their outer end position, the scissor parts with their edge in an approximately constant" distance stand from the edge of the shoe.

In the figure, an embodiment of the invention is shown.

The shoe 1 is shown, which is pressed forward from its heel by a heel support 2 against a known abutment, not shown. Opposite the tip of the shoe is the Pinch scissors with their two »scissor parts 3 and 4, which are in their outer end division! Solid lines} · Off the scissor parts 3 and 4 protrude downwards as guide pieces Serving roles 5 «6 and 7,8 out« those in hats 9, IO and 11,12 to run. These hats are connected to branches 13, 14 and 15, 16, which are bent across from them, as continuations of hats 9-12 Guide the roles 5-8. The hats 9-12 and the branches 13-16 continuing them are in sine under the scissor parts 3 and 4 permanently arranged hat splits 17 milled in

In the position of the rollers 5-8 nelsiesi fil® "'scissor parts 3 and 4 marked with a, the position drawn with rolling lines.

109848 / 0Ό99

ORIGINAL

If now the two scissor parts 3 and 4 by the below the mechanism described in the direction of the shoe * the rollers 5-8 slide in the branches 13-16 up to the position marked b, the scissor parts 3 and 4 being brought together in such a way that an axis is formed at 18 for the subsequent reeving. In the further course of the movement of the scissor parts 3 and 4 in the direction of the shoe 1, the rollers then slide 5-8 down in the butts 9-12, the scissor parts stepping over the edge of the shoe 1 and at the same time moving around the axis 18 to turn inwards.

When the scissor parts 3 and 4 are withdrawn, the rollers pass through 5-8 first again the branches 9-12, until the rollers 5-8 the position b, with the scissor parts 3 and 4 turning back around the axis and the scissor parts running away from the shoe 1. The common axis 18 of the scissor parts 3 and 4 is thus initially retained. When the rollers 5-8 pass into the branches 13-16, the scissor parts 3 and 4 are separated from one another, whereby the common axis ceases to exist. Reach it finally the roles 5-8 the position a, in which the dem Shoe 1 facing edge of the scissor parts 3 and 4 is located at approximately the same distance from the shoe edge. In this situation the Space in front of the scissor parts 3 and 4 is easily accessible, so that a new shoe to be tweaked can easily be inserted.

For the movement of the scissor parts 3 and 4 is the hydraulic Device 19 is provided with a piston 20, which the StOQeI 21 hex pushes in front of him. A crossbeam 22 is seated on the Stöfiel 21, on which the two tabs 23 and 24 hang. The tabs 23 and are on the other hand attached to the scissor parts 3 and 4. In order to during the advance movement of the cross member 22, the tabs 23 and 24 can follow the sideways movement of the scissor parts 3 and 4, hang the tabs 23 and 24 on the cross member 22 or the scissor parts 3 and 4 above bolts, which give the tabs 23 and 24 a rotational mobility.

1 pig.

2 claims

, -. 109848/0099 originally inspected

Claims (2)

L · hf S; PISC 1 ■ & \ l} Device for fastening the pinch scissors of a pinch scissors, up to the pinch scissors, by means of a guide attached to it © stitcfce. is guided in grooves, because the grooves f9 ".10-, 11,12 $ each with an outwardly bent branch (13,14,15,16) with such an inclination to the longitudinal axis of a shoe to be clamped | 1 | The end of the process is that when the sash legs are withdrawn, the two parts of the catfish C3-, 4) run away to the side from the axis | 18 |, about which they rotate when reeving. 2. The apparatus of claim I _{0 s} geXennzeichnet characterized in that the coast "13.14" 15-16) have such a Schrägeteilung that the SeitwMrtsbewagimg the seer parts £ 3.4) that their length corresponds to approximately the Zurüekziehbewegung _o T G-S β 4 β AOCt- BATH ORIGINAL