DE1241378B - Shooter guard for looms - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

D03d

German: 86e ~ 28/01

Number: 1241378

File number- P18420 VII a / 86 e

Filing date: $ 2. April 1957

Opened on: May 24, 1967

The invention relates to a shuttle guard for weaving machines with a rotatable on the shop supports stored, engraver having engraver shaft, which with a their reciprocating pivoting movement damping device is coupled, as well as with one of the contactor box tongue in contact standing feeler lever.

With such riflemen it is important to take into account the fact that the web shuttle arrives in the contactor box at great speed and therefore the contactor box tongue pushes back quite violently. This has the consequence that the feeler lever in turn pushed back violently is, so that inevitable rebound between the shuttle, the shuttle box tongue and the feeler lever occurs, which creates a certain uncertainty in the operation of the cutter shaft, Disturbances in the operation of the automatic disengagement of the loom and vibrations for Which are always harmful to a machine. It is true that rubbing the contactor box tongue softens on the shuttle, the severity of the shuttle's blow against the picker of the baton, but causes wear of the web guard and suddenly brakes it, causing it to slip the thread layers of the weft bobbin can cause.

In a known contactor guard, as mentioned at the beginning, attempts have been made to do this by means of a to avoid braking device formed by a spring (US Pat. No. 2,296,398). There is a feather always has the same effect, it must each time the working speed of the loom changes this operating speed can be adapted by changing their preload. Further the spring force increases steadily as the shuttle enters its box and is greatest when the shuttle is at a standstill, as a result of which it is, so to speak, stuck in its box becomes, which makes it difficult to knock off.

The invention is based on the technical problem to eliminate these unpleasant effects of the well-known damping.

The solution to this problem is achieved in a contactor guard of the type mentioned in the essential in that the damping device as a hydraulically working, a piston rod and a damper having a compression spring is formed.

This ensures that the effectiveness of the damper ceases when the shuttle is in his box has come to a standstill or contactor guards for weaving machines

Applicant;

Jean Picanol-Camps, Bandol, Var (France)

Representative:

Dipl.-Ing. R. H. Bahr

and Dipl.-Phys. E. Betzier, patent attorneys,

Heme, Freiligrathstr. 19th

Named as inventor:

Jean Picanol-Camps, Bandol, Var (France)

Claimed priority:

France January 18, 1957 (729803)

that the damping effect of the speed of the shuttle to be braked is proportional. Through this the damping effect adapts automatically to the working speeds of the loom, d. H., it becomes stronger, the greater the speed of the web protection. Once the action of the damper drops to zero, which is the case when the shuttle is at a standstill, it will Knocking off the shuttle is made easier, and the shuttle is spared because of the impact mechanism apart from the activity of web protection, he has no other forces to overcome.

It has been found to be useful that Invention to realize that the damper with the piercer shaft via one on the piercer shaft attached arm is coupled by a longitudinally displaceable rod.

This coupling rod can be attached to the arm of the cutter shaft as well as to the piston rod of the Damper can be provided freely supportable when one of a further feature of the invention Makes use.

Finally, it is expedient to have one on the coupling rod on the one hand and on the other hand to provide on one of the coupling rod serving guide supporting spring which is dimensioned so that it just keeps the feeler lever in contact with the contactor housing tongue.

In the drawing, the subject matter of the invention is shown using an exemplary embodiment

The drawing shows the usual arrangement of the components of a loom, namely one

709 587/175

Claims (4)

Shop support 1, which is pivotable on a shaft 2 carried by the loom frame (not shown), a shuttle box bottom plate 3 attached to the upper end of the shop support 1, a shuttle guide 4 attached to the plate 3 by bolts 5 and 6, through an opening 7 of the plate 3 going upper end of a baton 8, a flange 9 attached to the plate 3, which serves as a holder for a guide 10 of the baton 8, a hunter 11 shown during its approach to the end of its stroke, one around an approximately vertical on the Plate 3 mounted axis 13 pivotable contactor box tongue 12, a sensing lever 14 which is in contact with the outside of the box tongue 12 and which is rigidly connected to a piercer shaft 15 mounted in a bearing 16 fastened to the shop support 1, and a piercer 15 fastened to the piercer shaft 15 a, which cooperates with a frog, not shown, which in the usual arrangement the Actuation of the disengagement and thus shutdown of the loom causes if the shuttle does not properly enter the shuttle box intended for his reception. An arm 17 is attached to the cutter shaft 15 and is in operative connection with a coupling rod 18 in such a way that its one end is inserted into a corresponding hole at the end of the arm 17. The other end of the coupling rod 18 slides in a holder-like guide 22 attached to the shop support 1. A first adjusting ring 19 adjusts the coupling rod 18 with respect to the arm 17, while a second adjusting ring 20 serves as a support for one end of a spring 21, while the other end of the spring 21 lies against the top of the guide 22. The spring 21 thus seeks to push the coupling rod 18 upwards and thus to pivot the cutter shaft 15 in the direction in which it presses the contactor box tongue 12 into the contactor box via the feeler lever 14. "The lower end of the coupling rod 18 rests against the head of a regulating screw 23, which is blök-Mert by a lock nut 24 on a piston rod 25 of a hydraulically operating damper 28, which contains oil and a compression spring 27. The springs 27 and 21 are like this dimensioned so that they are just sufficient to keep the feeler lever 14 in contact with the shuttle box tongue 12. The loom also has a device known per se for damping the baton 8, for example an oil damper 32 which is arranged on the slack by means of a flange 33 and the rod 31 of which is pushed back by a buffer 30 attached to the baton 8. The upper end of the baton 8 is provided with a picker 29 against which the hunter 11 hits at the end of its stroke. The device works as follows: When the shuttle 11 reaches the shuttle box, it pushes the shuttle box sideways length 12 in the direction of the arrow Λ (against the action of the damper 28, which is effective via the feeler lever 14, the cutter shaft 15 and the coupling rod 18). The shuttle 11 is hereby gently braked, so that during this time no rebound between the shuttle, the shuttle box tongue and the feeler lever 14 can take place and thus the automatic uncoupling device of the loom is not disturbed. At the very end of the stroke, the damper 32 of the baton 8 ensures that the shuttle is completely stopped in a manner known per se. As soon as the web shuttle has come to a standstill in its shuttle box, the damper is no longer effective. When the shuttle 11 starts moving again, it only has to overcome the very low pressure of the shuttle box tongue 12 resulting from the action of the springs 21 and 27. After knocking off the shuttle, all parts return to their rest position under the action of springs 21 and 27. In this way, the device according to the invention retains its effectiveness at any speed of the loom, since its operation is synchronized with that of the shuttle. Furthermore, the soft braking of the shuttle reduces the wear of the shuttle and that of the picker, while at the same time preventing the weft thread layers wound on the weft bobbin from slipping off. Patent claims: 1. Contactor guards for weaving machines with a rotatably mounted on the shop supports, Stecher having engraver shaft, which with a their reciprocating pivoting movement damping device is coupled, as well as with one of the contactor box tongue in contact standing sensing lever, characterized in that the damping device as hydraulically operating, having a piston rod (25) and a compression spring (27) Damper (28) is formed. 2. Contactor guard according to claim 1, characterized in that the damper (28) with the Digger shaft (15) via an arm (17) fastened to the piercer shaft (15) through a longitudinally displaceable arm Rod (18) is coupled. 3. Contactor guard according to claim 2, characterized in that the coupling rod (18) both on the arm (17) of the cutter shaft (15) as well as on the piston rod (25) of the damper (28) is provided freely supportable. 4. Contactor guard according to claim 3, characterized in that on the coupling rod (18) a guide serving on the one hand on this and on the other hand on one of the coupling rods (18) (22) supporting spring (21) is provided, which is dimensioned so that it touches the feeler lever (14) just keeps in contact with the contactor box tongue (12). Considered publications:
French Patent No. 852,683;
U.S. Patent No. 1 315 608, 2 296 398. 1 sheet of drawings 709 587/175 4.67 © Bundesdruckerei Berlin