DE1527960A1 - Method and device for the production of sleeves closed on one side with bottom fold - Google Patents

Description

Method and device for the production of one-sided closed pods with bottom fold

The production of sleeves closed on one side, in particular Rimfire capsules for small-caliber ammunition have so far been carried out in several operations, with each operation a separate device is used. Between the individual work steps, i.e. before feeding the In a more or less finished state located capsules on the next following device is each one Cleaning of the capsules required, not to mention those associated with feeding the parts to the next device Difficulties are a frequent cause of disturbance.

The difficulties mentioned are partially avoided in another known method in which the sleeves in pole tools with the exception of the last upsetting of the head during all operations are held in the band by holding webs are left between circular incisions, which only after implementation the required practice steps separated will. The disadvantage of this method is the proportionate

moderately large material consumption as well as the requirement of a separate Device for the damming up of the head or the Bottom fold, whereby the need exists, the almost finished sleeve at the expense of the usual difficulties again to be fed to a device.

All of the above-mentioned disadvantages are avoided if, according to the proposal of the invention, continuously from a flat Band sinkers designed and 't' same operation

.2 -,; tests t / 0 _{t tg}

possibly also in one or more additional work Embellishments are drawn to sleeves closed on one side, (Then the open end of the sleeve is shaped like a cup and this Goblet-shaped end is then cut off and finally by axially upsetting the sleeves, the bottom fold is formed on them.

With such a procedure, there is no need either to clean the sleeves before the next operation or to do so of repeated feeding to different devices, and finally this method can be very material-saving because the boards are punched out in exactly the required size, but not for the bracket further material areas surrounding the board have to be used in the band.

In an expedient further development of the method according to the invention it is intended to separate the goblet-like ^ eformt »n Sleeve end by means of a guided in the direction of the sleeve axis To make a cut, which not only provides a very clean and smooth separation, but also in contrast to the well-known squeezing off a long service life for the cutting tool is also achieved.

For the implementation of the method according to the invention is a Proposed device, which is characterized by the design as a horizontal press with a straight line horizontally and movable punching, drawing, cutting and upsetting tools, the one with several turntables controlled by zwanzsgeateuerte for the reception and further transport of the sleeves among each other cd functionally connected fixed tool sticks work together *

In an advantageous embodiment, the Q tool for punching with bushing is also provided and attached to a curved auxiliary slide and the tool for the cn pulling or the first pulling process of the central axial ^{in a continuous N} Bore of the bushing guided drawing mandrel »

~ ³ "BATH ORIGINAL

to form and to attach to a long slide leading to the auxiliary slide. In this case, the arrangement is of course also made so that the auxiliary slide can be moved relative to the slide.

The invention eats shown in the drawing in an exemplary embodiment and is explained in more detail below with reference to this.

Show it

Pig. 1 In achematic representation and part

wise in section a plan view of a device for performing the method according to the invention!

Pig »2 a partial view,

Fig. 3 bie 9 in enlarged sections and in

Cut the various operations and

Pig, 10 to 13 the various processing stages

the sleeve.

In Figure 1, 1 denotes the double cranked crankshaft, which actuates the tappets \ 5 by means of the connecting rod 2.

Via the cure, venscheiben 4 are by means of the push rods 5 the two auxiliary tappets 6 actuated, of which in this case Case, however, only the left is operated.

U1 he a known feed 7 (Figure 2) the tool jib 8, the metal strip 19 is fed.

In the tool 8 with the double movement of the plunger 3 and punched out of the band 19 plates and drawn directly into cells. These cups are on the turntable 11 of the tool tock 9 and in this tool 9 to form sleeves

terverfor-t. 9098E1 / 0115

From the tool stock 9, the sleeves are placed on the turntable ' 12 pushed against the drawing direction into the turntable 13 In the turntable 13, the sleeves are compressed in the Werkeeugstock 10 and then ejected at 20 (Figure 2).

The turntables 11, 12 and 13 are from the crankshaft 1 over the bevel gears 14, the shaft 15, the spur gears 16 and the star gear 17 intermittently driven

According to Figure 2, the band 19 is reasonable schematically by means of the - ··, ■ indicated but known per se supply 7 in Pfeilriöhtung. is transported in front of the tool stick 8, not shown here. In addition, FIG. 2 shows the direction of rotation of the turntables 11, 12 and 13 with the aid of the arrows drawn for turntable 12 should first be subjected to a smoothing process in device 22. Accordingly, the delivery of the sleeve from the turntable 11 is then first to turntable 21 and from there to the turntable 12, and further 13 to turntable Brforderliehenfalls could au- to or instead dee GUiihprozeeses also be provided * 'additionally a Wasohprozeß.

As will be seen from Figure 2, handelt'es SiOH by 5-fold tools, that "there are each subjected to the same five part" the same Bearbeitungevorgang.

The stations I to VI shown in FIG. 2 are in the Figures 3 to 8 shown in more detail on a slightly larger scale.

^ The corresponding to station I Figure 3 shows the plunger 3 with to the drawing tool 3a and the auxiliary ram 6 with the punching

he produce 6a, with the drawing tool 3a in the central bore ^ 6b de β trained as a bushing punching plant 6a is performed. ° With 7 the feed device known to eioh is referred to - »and at 19 the metal band · 8 is the one behind the feeder 7 or the metal band 19 located tool stick »

into which the turntable 11 protrudes

As a result of the rotary movement of the crankshaft 1, the auxiliary plunger 6 with the punching tool 6a is first moved so that the latter punches a plate out of the band 19, which is then immediately pulled to the cup 23 by the practically simultaneous movement of the plunger 3 with the drawing tool 3a and thereby is transported through the tool 8 into the turntable 11, where it is held by the clamping jaws 11a. To ensure that the cup 23 ■ - ■: ■■. To ensure from the drawing tool 3a, the resiliently arranged jaws 8a are provided in the tool 8, which are pressed apart against the spring force when the drawing tool 3a presses the capsule 23 against the chamfer 8b. As soon as the capsule 23 is lifted through, the jaws 8a rest against the pulling tool 3a due to the spring force and thereby prevent the capsule 23 from being taken from the turntable 11 back into the tool when the tool 3a is withdrawn. / ■

The process described is repeated continuously for each full revolution of the crankshaft 1 while in unison thus between every 2 successive punching and drawing processes on the bevel gears 14, the shaft 15, the Spur gears 16 and the star gear 17 of the turntable! 1 is rotated further by a predetermined angle, according to FIG Figure 2, for example, by 90 °.

The gate corridors in Station II of Figure 2 are shown in FIGS. 4 and 5.

The bowl top moved by the turntable 11 by 90 ° here is activated by means of the further Zithwtrkeeugee 24 & ue, not shown in FIG. 1, on the left of the two tappets 3 the turntable 11 is inserted into the tool 8 and at the same time

909851/0115

further deformed (Figure 4) and with the same turntable position pulled back into the turntable 11 by means of the punch 25 (FIG. 5) “Instead of the tool stick 8, this process could of course also be carried out in the tool stick 9 will.

After the turntable has been rotated by a further 90 °, the process shown in FIG. 6 takes place in station III of FIG.

First of all, the two plungers 3 are attached to the left by means of the Tool 3b (Figure 1) the at its open end in the meantime (Figures 4 and 5) widened sleeve 23 from dome turntable 11 pushed into the tool post 9. For this purpose, the lower part of the tool stock 9 is sufficiently large Bore 9a and the springs in this part are flexible arranged jaws 9b are provided with a corresponding chamfer 9c, so that the expanded sleeve end is also unhindered can pass through this part. In contrast to this, the tool 3b is in the following part of the tool stick 9 or the part 26 arranged in this and serving as a cutting tool, so that when the Sleeve 23 in this part of the tool stock 9, the expanded sleeve end through the annular edge 26a of the cutting tool 26 is cut off, after which the sleeve 23 by the punch 3b during its further movement from the tool stock 9 into the turntable 12 arranged behind it is pushed in and is now transported further by this in the direction of the arrow in FIG will. The horizontal arrangement ensures that the cut end of the sleeve falls down, If necessary, flushing or another measure can also be provided to ensure that the cut sleeve ends aside properly be managed so that they cannot cause any disruption to operations.

- 7 -. 909851/0115

According to FIG. 7, in station IV of FIG Clock driven or "moving stamp 27 from the Turntable 12 pushed into the turntable 13, the open end in the tool 28 arranged in this the sleeve 23 is deformed.

In the turntable 13, the sleeve 23 is now transported to the station V of Figure 2 and there according to Figure 8, further deformed.

According to FIG. 8, the front end of the punch 30 attached to the right of the two plungers 3 (FIG. 1) and guided in the sleeve 29 moves with its offset front end into the sleeve 23 and then the bottom of the sleeve so geetauoht that forms dl · intended bottom fold.

The now fully formed sleeve 23 is further transported to the station of FIG 2 and TI ausgestoflen at 20 there ^ By denDrehteller. 13

As can be seen from FIG. horizontal arrangement on the pin 31 hanging sleeve 23 when retracting the pin is not pulled back into the tool 28 or the turntable 13 »which for easily understandable reasons would lead to a disruption of the smooth operation, if according to Figure 7 in the already occupied tool 28 a new sleeve would be inserted, the stripper plate 32 is swiveled in before the pin 31 is withdrawn.

- 8 909851/0115

The various shaping stages are shown in the example a capsule shown on an enlarged scale in FIGS. The capsule shape corresponds to this of FIG. 10 of station I of FIG. 2 or the machining process according to FIG. 3 »the capsule shape of 11 of the station II of FIG. 2 or the processing process according to FIGS. 4 and 5, the capsule shape of FIG Figure 12 of the station III of the Fipur 2 or, the final state of the machining process according to Figure 6 and the Capsule shape of Figure 13 of the desired band shape, such as ■ it in Strtion V of Figure 2 or when processing ' Process according to Figure 8 is achieved.

It is understood that in the manner described above and In this way, sleeves of other dimensions and shapes can also be manufactured * It is also understood that further processing steps that may be required can be switched on and that, for example, instead The 90 ° division on the turntables shown in FIG. 2 also selected one of 72 ° or 60 °, for example could be. And finally, it is also easy to see that deviating from the representation of the Figure 2 of course also a single tool or another multi-tool, for example a Dreifach-Werkeeug, could be provided.

Troisdorf, H. Sept. 1966

909851/0115

Claims (4)

Claims ί 1 · / Process for the production of sleeves which are closed on one side and J at their closed end with a bottom fold extending radially outwardly over the entire circumference, in particular cartridge cases for rimfire ignition, characterized in that blanks are continuously punched out of a flat strip (19) and in the same work step «; and possibly also in one or more further operations to form sleeves (23) closed on one side, then the open end of the sleeves is shaped like a cup and this cup-like end .sodann. , {is cut off and finally the bottom fold is formed on these by axially upsetting the sleeves. 2. The method according to claim 1, characterized in that the keloh-like shaped sleeve end by means of a in Riohtung the sleeve axis taking place cut is separated. 3 »Device for carrying out the method according to claim 1 , + * or 2, characterized by the design as a horizontal press with a straight, horizontally movable punching (6a), drawing (3a, 3b, 24), cutting (26 ) and upsetting tools (10, 27 »30), which with several · forced! controlled turntables (11 to 13) for the reception and the 'further transport of the sleeves (23) with each other in functional connection held fixed tool sticks work together. 4. Apparatus according to claim 3t, characterized in that further turntables (21) are provided in which washing and smoothing processes can be carried out between two deforming operations Troisdorf, Sept. 14, 1966 ^{Kg / Kn} 908851/0115