DE410912C - Device on eyelet inserting machines for inserting eyelets into ring leaf shafts - Google Patents

Description

eyelet setting machines, their tools in the feed device of the workpiece are stored one behind the other and at an unchangeable distance from one another and where the tools swing back and forth in a continuous arc in one direction only, as is the case with the machine according to the main patent 373554, are not suitable easily for processing ring leaf shafts.

These ring blade shafts are at their lowest end, where the upper leather of the The shoe is sewn to the shaft using several threads, the so-called bartack seam, or tied together, and the prevailing fashion requires that the the lowest eyelet is placed close to the latch, d. H. in the finished shoe close to the edge of the sewn-on upper leather.

If such a shaft is processed on the machine according to the main patent, so the punch holder swings back and forth between the upper and lower shaft halves. Punching close to the bolt is possible, but not inserting an eyelet, because the punch holder, swinging sideways during the alternating movement, grips the bolt seam and pulls the shaft to the side, which of course means that the eyelet does not go into the pre-cut Hole, but is used next to it.

In order to process a ring blade shaft, it is therefore necessary to close close to the bolt seam punch and then the insertion tools come to act on the punched hole without grasping the bolt seam through the swinging hole punch abutment. The present invention now relates to a device for double eyelet insertion machines according to patent 373554, which is particularly suitable for processing ring blade shafts.

The drawings illustrate the invention, namely Figs. 1 and 2 show plan views of the new device, Fig. 3 is a section through Fig. 2 along the line AB and Fig. 4 is a side view of Fig. 1. Fig. 5 shows a partial side view of the double eyelet inserting machine with a section through the guides of the hole punch, as far as it is necessary to understand the invention.

As in the main patent, the upper of the shoe is pushed over a fixed guide tongue 1 in a known manner, just like in the main patent, and is held in place here by leaf springs or the like, which are not specifically shown in the drawing, whereupon the punching holes L first open the holes punch out for the eyelets. While the shaft now remains unchanged on the fixed tongue 1, the body 17, which is the guide

*; Former additional patent 37504g.

rungeii for punching and punching, with the aid of the lever arm 21 and the rod 33 by lifting disks around the pins 13 swinging sideways, behind the plane of the paper in Fig. 5, so that the Emseizstempelpaar, which is in Fig. 5 in front of the 1 .ochstanzen and therefore through the longitudinal cluiti. fori.gesJhnit.-en is under the hammer is brought and can come into effect here. Hole punches and insertion punches are sequentially through the Hit lever pair 4, 4 and pushed against the workpiece by the hammer, which are coupled to one another by a toothing 7, 8, from the main shaft 40 from a non-circular disc 5 and the lever arm 4 'their corresponding movement obtain.

In the main patent, punches and punches act on fixed abutments that give them opposite are stored in a tongue which is attached to the body 17 and which therefore also takes part in the swing movement of 1 '. Herein lies, as already above, eras clarifies, the reason why ring leaf shafts are not loosened close to the bartack seam because the swinging abutment tongue lacks the necessary freedom of movement to swing out near the Xaht. According to the invention, the Wideilagerzunge is now made particularly mobile for the hole punch and rotatably mounted in the fixed support tongue for the shaft, while they of the swinging with the body 17 abutment tongue for the insertion punch is inevitably controlled so that at the moment of punching the Opposite hole punching and when swinging out the abutment tongue for the insertion punch disappears in the hollow support tongue.

In Fig. 1 represents the fixed support tongue; for the shaft. Which is placed over the tongue that one shaft half over and the other is under the tongue and its bolt seam is at the top in Fig. 1 Edge of tongue 1 is located. The tongue ι is, as can be seen from Fig. 5, on Machine frame screwed on, and it is hollow in its front part. In this cavity lies the perforated tongue 200, which can swing around the screw pin 201. At the body 17 only sizt the replaceable punch tongue 202, which is the front of the counter punch 203 for the eyelets. When piercing the shaft, the device looks into the position according to Fig. 1, the tongue 202 following the angle leg 204 of the tongue 200 has moved down and therefore the tongue 200 has emerged from its cavity and is located opposite the punching machine as a punching abutment.

If the alternating movement now takes place, i. H. the movement that the eyelet stamp takes the place of the punch, the tongue 202 pivots the tongue 200 ■ laugh to the left (Fig. I) to the side, and stamp 203 takes the place of the tongue before Had taken 200. While this evades in the cavity of the fixed support tongue 1, without being hindered somehow by the bolt seam of the shaft, which, as I said, rests against the upper edge of the tongue 1 to be or to move the shaft. The eyelet can thus be placed about as close to the bartack seam as how the radius of the perforated tongue 200 is large.

During the subsequent advance of the workpiece, the tongue 202, depending on the setting of the machine, swings out more or less upwards (Fig. 2), while the perforated tongue remains quietly in its position until the tongue 202 returns to the position shown in Fig. 1 and the game starts all over again. Of course, the device can also easily be used when machining open shafts, e.g. B. Derby shafts, can be used.

Claims (1)

Patent claim: Device on eyelet inserting machines according to patent 373554 for inserting Eyelets in ring leaf shafts, which are connected to one another at the lower end by a seam and where the bottom eyelet should be placed as close as possible to the seam, marked with an abutment tongue swingably arranged in the hollow support tongue (1) (200) for the punches, which are made by the oscillating punch tongue (202) by means of angled legs (200 and 204) is controlled in such a way that it faces the punch as an abutment when punching, on the other hand, when the eyelet is inserted and when the workpiece is advanced, it is within the cavity of the support tongue is located. 1 sheet of drawings.