DE1985297U - RETAINING DEVICE FOR LOOMS. - Google Patents

Description

; RA.649 881 15.i1.67i56 Jj

Albert Haag KG ₉ , 7252 Weil der Stadt / Württ,

Protect catching device for looms

The invention relates to a gunner catching device with a buffer with a piston rod and a buffer head arranged on this for looms with a picker firmly attached to the baton, in particular a new and advantageous arrangement of the cooperating ones Parts.

The known shooting devices of this type, mostly with hydraulic buffers, are arranged so that the piston of the Buffer is arranged perpendicular to the baton located in its end position. The flat or slightly curved impact surface of the buffer head, which usually engages the baton, is arranged perpendicular to the buffer piston, as in FIG. 1 shown. Buffers in this arrangement have been used extensively for decades. However, this arrangement has the disadvantage that the baton slides approx. 2 * 3 mm upwards on the buffer head with each deceleration, causing a corresponding abrasion on the support of the buffer head arises, so that these are often replaced got to. This process will be briefly explained with reference to FIG. 1A. It is well known that the batons of the automatic looms do not have any fixed pivot point, because otherwise the pricker would move on an arc of a circle. The known straight guides make the picker but guided horizontally on a straight line »The baton therefore also moves horizontally in the upper area running straight lines, the inclination of the baton when it is in contact with the buffer head is 5-10 ° depending on the type of loom average inclination of the baton of 7 * 5 ° and one Braking distance B of the buffer of 22 mm, the vertical movement A of the buffer head is 3 * 1 mm, as shown in Fig. 1 A represents. The baton slips with every deceleration

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5.1 mm on the buffer head.

The purpose of the invention is to avoid this friction between the buffer head j and the baton »

This is achieved in the shooting device according to the invention in that the piston rod of the buffer accordingly the actual movement of the baton is arranged horizontally., d-h. no longer inclined and only the buffer head or the Impact surface of the buffer head of the inclination of the baton is adjusted. With this arrangement, the friction between the baton and the buffer head is avoided, so that the support of the Buffer head has a multiple service life »At the same time, this is otherwise not necessary on the machine side to achieve a exact contactor seat when changing the bobbin, readjustment of the buffer head is necessary.

The loom factories today often use the shuttle buffer Let it act directly on the picker «The same problem arises here as well. When using pickers from one Elastomers, i.e. a rubber-elastic plastic, can the use of the buffer head of the hydraulic buffer in the rifle catching device according to the invention can be omitted entirely »Es only the rear part of the picker, which is on the buffer head, is used is applied, dimensioned a little stronger. The picker replaces it the use of the buffer head, which is then made of steel can. This results in a particularly advantageous application of the present invention Invention.

The shooting device according to the invention is based on the Fig. 1-4 will be explained in more detail. From the hydraulic (or

i pneumatic) shooter stop buffer is only the piston rod

with the buffer head adjustable by means of screw - 2

F. 5.

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shown. Fig «1 shows the known arrangement of the hydraulic Buffer with the buffer piston standing vertically on the inclined baton 4.

Wig “ 2 to 5 show exemplary embodiments of the invention. In the Pig »2 version, the buffer piston runs horizontally and only the impact surface of the buffer head is inclined according to the position of the baton. The screw 2 has a hexagonal screw head 5 which is cast into the buffer head made, for example, of an elastomer. The buffer head is provided with a suspension slot 6 which reduces the initial shock when the shooter is intercepted. This Pederungsschlitz is of relatively great importance, as will be briefly explained below »

It is well known that the greatest shock that the web shooter occurs with his Run in the loom finds out when the shooter hits the picker. This shock is greater than the greatest acceleration when striking, as newer reliable measurements of the accelerations occurring on the shooter have clearly shown "This shock is therefore the cause of the dreaded knocking off of the bobbins »When the shooter hits the picker, the buffer head of the hydraulic buffer on the baton. Therefore, when the shooter hits the picker, besides the picker and baton also the relatively heavy iron piston rod of the hydraulic one

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Buffers worn buffer head are accelerated "The pederation slot now means that not all masses have to be accelerated at the same time." The impact on the shooter is reduced because the impact is distributed over two successive impacts, since the buffer piston only comes into contact of the relatively soft Pederbail 6 a located in front of the Pederungsschlitz is accelerated.

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The associated reduction in the impact on the shooter reduces the risk of the yarn being knocked off or it can be wound up more gently Invention are used ₀ With the known arrangement, the wear on the buffer head would be too great due to the above-described relative movement between the buffer head and baton »

In the embodiment according to FIG. 3, the hydraulic buffer engages directly to the picker. The buffer head no longer has an insert, but consists of a steel plate 7 with a rounded edge. The back of the picker, which is made of an elastomer, is like this designed so that it is vertical when the picker is in contact with the buffer head. The rear one between the baton and the buffer head Sensitive part 8 of the picker is therefore given a trapezoidal cross-section.

In. Fig. 4 to 5, a buffer head is shown, which is transverse to the baton is arranged. The screw head in this version is " example round and has a slot 9 to prevent rotation The plan view of the plane impact surface of the buffer head is slightly curved in the side view, as can be seen in FIG. at With this design of the buffer head, small differences in the inclination of the baton no longer play a role «,

Claims (1)

UMW 11/15/67 Albert Haag KG. , 7252 Because the city / Württ. ^ψ 1. Sehützenfang device acting on the baton or the picker, for looms with pickers fixed on the baton, in particular with a hydraulic buffer, characterized by the horizontal arrangement of the piston rod (l) of the buffer and an inclination corresponding to the inclination of the baton of the buffer head or a perpendicular impact surface of the buffer head and an impact surface arranged inclined to the baton on the picker or blow tockj that it runs vertically in the extreme end position of the baton. 2 »Sehützen catching device according to claim I ₅ which engages a picker made of a plastic from the group of elastomers, since *» characterized by the fact that the buffer head (7) is made of steel and has no insert « 5. Sehützen catching device according to claim 2, characterized in that that the picker, which is firmly attached to the baton, is at the rear The end is designed so that the surface resting on the buffer head extends vertically in the rearmost position of the baton. 4. Sehützen catching device according to claim 1 with a buffer head from one through a Elastomer, characterized by a suspension slot (6) yielding bow-shaped front part (6 a) ..