DE2333671A1 - DEVICE FOR TRANSPORTING MATERIALS TO BE PROCESSED ON MACHINING MACHINES - Google Patents

Description

14,141 30 / egg

PATENTANWÄLTE ™ £ ^naf - DIETER LO.-Phy _s . CLAVS POHLAU ί.-Ιηβ-ΓΚΛΝΖ LOHRENTZ • 500 NUREMBERG KKSLERFLATZ I

SICAP DI GIANCARLOS SPIAIMTINI & C. S.η.C, Milan / Italy

Device for the transport of products to be processed Material on processing machines

The invention relates to a device for attachment to processing machines, in particular presses, embossing presses, Punching devices or the like, which is used for the programmed transport of the material to be processed.

Immediately, for example, in presses, embossing presses, punching devices or similar machines, the locomotion of the tape or other, generally tape-shaped, material to be processed with articulated lever mechanisms or-with the help of grippers that hold the material

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take away or forward, carried out. Apart from general functional difficulties, these are known Devices in particular no rapid and precisely determined movement of the material to be processed.

Proceeding from this, the aim of the invention is to create a device for transporting material to be processed with controlled feed, "which is able to perform exactly and with short cycle times in all desired Operating modes to work, and this with continuity in the method of operation and with such security, that neither repairs nor similar incidents will cause the processing machine to stand still for a long period of time.

To solve this problem it is proposed according to the invention in a device of the type mentioned at the outset, that the device has a central part in which a rotation of the main shaft serving to transport the material effecting, radially movable pistons are arranged, and that with the middle part two arranged on both sides, to distribute the pressure medium acting directly on the pistons of the main shaft or to block the Main shaft according to the machine program serving side parts are connected, one side part a body rotating with the main shaft and two lines for the supply and discharge of the coming from the outside

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Has pressure medium which are individually connected to as many hollow sectors of the rotating body, which in turn are in communication with the cylinders of the radially movable pistons, while the other, opposite side part a braking device for the momentary blocking of the main shaft accordingly the operation of the machine, which consists of two half-rings, which are simultaneously on the main shaft affect surrounding profile bodies or inserts. It should be mentioned that in itself the rotation of a shaft is known by means of a plurality of radially movable pistons.

A device of the type explained above is able to meet the requirements that are to be placed on it, to satisfy perfectly, i.e. in particular reliably ■ and precisely one transport of the material to be processed to enable the desired route.

■ Further features, details and advantages of the invention emerge from the following description of a preferred exemplary embodiment with reference to the drawing. Show it:

FIG. 1, seen from above and partially in section, a device according to the invention;

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FIG. 2 shows a section along line 2-2 in FIG. 1;

Figure 3 shows a section along line 3-3 in Figure 1 and

FIG. 4 shows a section along line 4-4 in FIG.

As can be seen in particular from Figure 1, there is Device according to the invention from a middle part A and the two side parts B and C on both sides of the middle part A are arranged. The side parts B and C serve on the one hand to distribute the rotation of the Main shaft causing pressure medium and on the other hand to block the main shaft according to the jex ^ hasty operation. The main shaft consists of two half-shafts 6A and 6b, which are coaxial with a torsion band by means of the Pin 50 are connected.

In a manner known per se, the middle part contains A, which is connected to the side parts B and C in such a way that it works with them together, several pairs of pistons 2, which in corresponding, the pressure medium receiving cylinders 3 slide diametrically opposite.

The side part B of the device according to the invention is intended to be attached to the individual pistons of the central part A from the outside via the inlet marked 51 in FIG.

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to distribute incoming pressure medium. The pressure medium exits in the following explained work phases via the discharge line 52, the lines 51 and 52 of course differing can be arranged from the representation in the drawing.

In the side part B, a rotating body is rotatable 53 (Figure 3) attached to the distribution of the pressure medium, which is provided with hollow sectors 54, 55, the speaking in the decision ^ work phases, the supply and discharge lines 51, 52 to the supply tubes 56, 57, 58, 59 of the cylinders 3 assigned to the piston 2. To move the half-shafts 6A and 6B of the device, the pistons 2 are connected to the device via eccentrically arranged drive rods 4, so that the main shaft 6A, 6B can rotate with great uniformity and without vibrations.

It is assumed that the device is in the position shown. In this case it works Pressure medium, which comes via the supply line 51, into the left of the cylinders 3 - according to FIG. 3 - namely via the channel 61, the hollow sector 54 and the line 56. The used pressure medium of the momentarily inoperative The cylinder flows outwards via the tubes 57, 58,

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59, the hollow sector 55, which is connected to the tubes, the outflow channel 62 and finally via the discharge line 52. The extension of the hollow sectors 54 and 55 and the radial offset of the aforementioned lines is selected so that one or more pistons 2 are consecutive and pressurized as a function of the continuous rotation of the main shaft 6A-6B can be.

The blocking side part C to be connected to the machine tool, which is assigned to the half-shaft 6B, contains, as can be clearly seen in particular from FIG. 4, two half-rings 63 arranged concentrically around the half-shaft 6B. These two half-rings end in two radial, beveled projections 64, which are located in the interior of likewise beveled cavities 65 of two bell-shaped pistons 66, which in turn slide within further cylinders 67. Each of the cylinders is equipped with a line 68 for the supply of pressure medium, the pressure medium supply being controlled from the outside by means of suitable devices. Springs 69 ensure that the half-rings 63 are held in a spaced-apart position, while further springs 70 keep the bell-shaped pistons 66 away from the radial projections 64 of the half-rings 63 when the side part C of the device is not to be effective, around

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to allow rotation of the main shaft 6A-6B.

A series of profiled inserts or other bodies 71 that can move freely with one or more Support housings 72, which resemble ball bearing housings, are connected between the half rings 63 and the half shaft 6B appropriate. The insert pieces 71 are at a leakage or loosening by means of suitable holders, which for reasons the brevity are not shown prevented. They are arranged at a slight angle to the radial position, so that they - as mentioned above - allow the main shaft to rotate freely.

If the half-wave 6B has to be stopped according to the work program of the processing machine, then Pressure medium introduced into the lines 68 with the aid of said devices. This introduction of compressed Air causes the bell-shaped pistons 66 to be displaced against the action of the springs 70 and consequently to an approach of the half rings 63 against the action of the springs 69 with the result that immediately the Half-wool 63 and thus also the half-shaft 6A is blocked, since the half-rings 63 force the insert pieces 71 to to straighten up radially, i.e. to reach a state of greatest radial expansion.

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In order to avoid excessive torsional loads on the half-shaft is provided according to the invention that simultaneously with the inlet of the pressure medium in the lines 68 the corresponding lines 51 or 52 through which the pressure medium exits from the cylinders 3 of the pistons 2, be throttled, namely by elements that are able to reduce the effective cross-section of the lines. In this way, the pistons 2 are braked during their inactive work step, whereby the half-wave 6a and consequently also the half-wave 6B is stopped. It goes without saying that this is a throttling process in the lines 51 or 52 take place with a corresponding time advance before the inlet of the pressure medium into the cylinder 67 got to.

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Claims (6)

Patent claims: 1. ) Device for attachment to processing machines, in particular presses, embossing presses, punching devices or the like, which is used for the programmed transport of the material to be processed, characterized in that the device has a central part (A) in which a rotation of the transport the main shaft serving the material (6A, 6B) causing, radially movable pistons (2) are arranged, and that with the middle part two arranged on both sides, serve to distribute the pressure medium acting directly on the pistons of the main shaft or to block the main shaft according to the machine program Side parts (B, C) are connected, one side part (B) having a body (53) rotating with the main shaft and two lines (51, 52) for supplying and discharging the pressure medium coming from the outside just as many hollow sectors (54, 55) of the rotating body (53) are connected, which in turn with the cylinders (3) of the radially movable hen piston (2) are in connection, while the other, opposite side part (C) has a braking device for instantaneous blocking of the main shaft 309886/0825 the operation of the machine, which consists of two Half-rings (63), the profile body (71) or insert pieces surrounding the main shaft at the same time act. 2. Device according to claim 1, characterized in that the hollow sectors (54, 55) of the rotating body (53) with the supply and discharge line for the pressure medium via channels (61, 62) are related. 3. Apparatus according to claim 1 or 2, characterized in that the half rings (63) of the braking device two pairs of diametrically opposed projections (64) each located within the cavity (65) of two bell-shaped pistons (66) are arranged in such a way that when the bell-shaped piston is displaced f shaped piston under the action of the pressure medium in Direction of the projections an approach of the projections each pair and consequently a blocking of the main shaft via the profile bodies or inserts (71) takes place, with both the projections as well as the walls of the cavities of the bell-shaped pistons run inclined. 309886/0825 4. Apparatus according to claim 3, characterized in that the projections (64) of the half-rings (63) and the bell-shaped pistons (66) cooperating with them are resiliently held in their rest position _{, preferably by means of helical springs (69, 7O) 1} . 5. Device according to one of the preceding claims, characterized in that the main shaft (6A, 6b) surrounding profile bodies or inserts (71) with one another by means of at least one mounting housing (72) are connected and inclined slightly with respect to the radial position to the main shaft, so that they are when the half rings (63) approach each other, move them to their greatest extent. 6. Device according to one of the preceding claims, characterized in that timed before the inlet of the Pressure medium into the cylinder (3) assigned to the radially movable piston (2), which is currently used as an outlet line Serving line (51, 52) can be throttled to the main shaft (6A, 6B) before the final blocking to slow down. 309886/0825