DE1994153U - PNEUMATICALLY ACTING NOZZLE FOR A DEVICE FOR REPLACING BEVEL CUT CORD STRIPS. - Google Patents

Description

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Berstorff Maschinenbau GmbH., Hanover, An der Breiten Wiese 5-5

Pneumatically acting nozzle for a device for moving very saw-cut cord fabric strips

The furnace refers to a pneumatically operated nozzle for a device for moving very saw-cut pieces Cord fabric strips for tire carcasses from a bevel cutting machine on a silent when filing » standing storage belt, the nozzle being a fixed ;, with a suction line connectable housing, in which a serving as a suction tube and connected to the suction cup Hollow cylindrical part with sliding piston can be moved up and down is. -

Nozzles of this type are known, in which the hollow cylinder The rope is firmly connected to the housing

stands so that axial movement of the same is prevented It is not uncommon for bevel cutting machines that as a result of inaccurate value the support table has bumps that are invisible to the naked eye, but the Operation of the bevel cutting machines is sometimes quite sensitive disturb. The malfunction is based on the fact that a rope of the nozzles arranged in rows on the cord fabric strip is already in place and the suction process begins while the remaining part of the nozzles is not yet in contact, i.e. the suction process has not yet started.

This object is achieved according to the invention in that to compensate for unevenness of the Auflagetisehes Bevel cutting machine of the sliding piston under the action an upwardly resilient member, in particular a compression spring.

By the elastic member it is made that In fact, all nozzles are in operation at the same time and the suction process starts at the same time »The Unevenness of the Auflagetisehes are so by the elastic Member of each nozzle balanced »

There is also a need to switch off some of the nozzles in a row by simple means »The number of Nozzles required for operation depend on the cutting angle away. If this angle of intersection is larger, fewer nozzles are required than in the opposite case! * The excess nozzles are based on a further feature of the hiring, thereby ex- * switched so that a stop designed as a locking spring is in front

is seen which when driving over in the release position of Lock spring with the movement of the hollow cylindrical rope Sliding piston in the blocking division and after loosening in this position a downward movement of the hollow cylindrical Part with sliding piston prevents »

Advantages are in the upper part of the housing Holes provided, which in the Blockferstellung of the hollow cylindrical rope are covered in such a way that with it the connection to the suction line is interrupted «

Difficulties also arise in practice because the suction cup is during the suction process the very labile and sensitive tissue pulls into you and permanently deformed. These inconveniences can be remedied according to a further suggestion of the innovation that in the suction cup concentric to the lip arranged, annular channels forming webs are provided, and that openings are arranged in these webs, which connect the ring channels with each other.

Cross-shaped bars also divide the ring channels into four to better maintain the vacuum Zones and also give the suction cup the necessary strength,

An exemplary embodiment of the pneumatically operating Dfise according to the invention is shown below with reference to the drawing

_ 4 "

illustrated in more detail. In this show in a purely seminal manner

lig. 1 is a partial view of a device for transferring diagonally cut cord fabric strips en, this device being equipped with nozzles according to the innovation

lig. 2 shows a view or partial section through the nozzle according to the invention in the suction position

lig. 3 is an isometric view of the locking spring of the nozzle according to the invention

lig. 4 is a vertical partial section through the

New nozzle in the blocking division

lig. 5 shows a vertical section through the suction cup of the nozzle according to the invention

lig. 6 a bottom view of the arrangement according to

With 1 (lig.1) is a transport table with a Conveyor belt denotes which transports the cord fabric web 2 to be cut. This cord fabric panel 2 is of one not shown in the drawing: Sehneid-; device diagonally or transversely to the transport direction in strips cut.

The diagonally cut cord fabric strip is then from the conveyor belt of the conveyor belt 1 to a Storage belt implemented, which at. Repositioning is at a standstill, after the end of the repositioning process, however, a (translation = · Movement is carried out and the cord fabric strips 2 are transported away.

The implementation takes place with the help of the suction line 3 connected grippers 4 on which with Distance adjacent suction nozzles 5 are arranged »

Details of these suction nozzles can be found in the figures 2 and 4 to 6. Each nozzle 5 has a housing 6 which is firmly connected to the suction line 3 and which has bores 7 can be connected to the suction line 3. This housing 6 receives a hollow cylindrical part 8 on which the lower end of the suction cup 9 is attached. In the middle of the hollow cylinder-shaped part 8, a sliding piston 1o is mounted, the movement of which is downwardly controlled by a snap ring 1o is limited. The upward movement, on the other hand, is made by one Limit stop in 2Porm a locking spring 11, their design from IPigur 3 can be seen.

The sliding piston Io is under the action of an upwardly elastically flexible member which, in the embodiment shown in the drawing, is designed as a compression spring. This resilient ^; The link has the purpose of compensating for unevenness in the support table of the bevel cutting machine.

If the two legs 11a of the locking spring 11 are pressed together, this is converted into the bad division, their effect as a stop for the sliding piston 1o canceled, which is now in the blocking position shown in Mg. 4 can be moved. If the two tendons 11a released, the locking spring 11 moves back into the locking position, thus securing the G-guide piston 1o against Downward movement. In this blocking position, the upper end of the hollow cylindrical rope 8 covers the bores ■ 7 and thus interrupts the connection to the suction line 3 »Die Nozzle 5 is now switched off.

The suction cup 9, which is preferably made of elastic material, for example plastic, has a lip 13, with webs 14 to 16 arranged concentrically to this, through which ring channels are formed (fig. 6). In the webs 14 to 16 openings Ha to 16a are provided, through which the ring channels are connected to one another.

-Protection claims-

Claims (6)

Protection claims 1. Pneumatically acting nozzle for a device for transferring of very saw-cut cord fabric strips for air-tire launches from a bevel cutting machine to a conveyor belt which is stationary during the deposition, with each nozzle on has a fixed housing that can be connected to the suction line and in which a suction tube is used and attached to the suction cup connected hollow cylinder-shaped part with sliding piston can be moved up and down, characterized in that that to compensate for unevenness of the support table of the inclined cutting machine the & guide piston (1o) is under the action of an upwardly resiliently resilient member, in particular a compression spring (-12). 2. Nozzle, with a stop that limits the working stroke of the nozzle, according to claim 1, characterized in that g e k e η η ζ e I e h η e t, that the stop is designed as a locking spring (11) which, when driven over into its release position, the movement of the hollow cylinder-shaped Part (6) with sliding piston (1o) allows in the blocking position and after loosening in this position a downward movement of the hollow cylindrical part (6) with Sliding piston (1o) prevented. 3. Nozzle, with bores arranged in the upper part of the housing, according to claim 1 and 2, dadurehgeke η η ζ eie h-η et that in the blocking position the hollow cylindrical part (6) covers the two bores (7) and thus the " Connection to the suction line (3) is interrupted. 4. Nozzle according to claim 1 to 3, characterized '■': ■■. ■ -. ■■. '' '■■ "■ - ■. -A2 - -A2 - ζ e i ο η η e t that the suction cup (9) on the hollow cylinder-shaped Part (6) can be attached. 5. nozzle, with lip arranged on the circumference of the suction cup, according to claim 1 to 4 _? thereby geke η η ζ ' ei c hn et that in the suction cup (9) ^{K arranged} concentrically to the lip (13), annular channels forming webs (H to 16) are provided, and that in these webs (H to 16) openings (Ha to 16a) are arranged, which connect the ring channels with each other® 6. Nozzle according to claim 5 * geke η η ζ ei ch η et by cross-shaped webs (17) »which subdivide the annular channels into four zones.