DE2461829C3 - Auxiliary device for inserting a knife block, equipped with a plurality of knives, of a loop cutting device into a tufting machine - Google Patents

Description

The invention relates to an auxiliary device for inserting one with a plurality of knives equipped knife block of a loop cutting device in a tufting machine according to the preamble of the claim.

Such an auxiliary device is obviously previously used by the applicant. With this well-known Auxiliary device, it is possible to move the knife blocks sideways in a rail Knives in plant mi: to bring the grippers. However, since the knife .inter tension on the associated Getting to grabs is: not only a lot of skill, but also, especially with long knife blocks with the corresponding »Anr-Jil of knives, considerable force is required to move the knife blocks when inserting them in the running rail and to press against the gripper.

The object of the invention is therefore the insertion of knife blocks equipped with a plurality of knives into a tufting machine to facilitate.

This object is achieved by the initially mentioned device according to the invention two double-armed levers are arranged by the cutter block engaging around the clamping plate profile U of flat * "f Her, at its one end by an actuating means of a spindle to the push rod, at its other end by a clamping bar provided with pins or the like engaging between the knives, articulated to one

Parallelogram are connected.

Let this auxiliary device according to the invention the knives are effortlessly pre-tensioned and brought into contact with the associated grippers. After the Inserting the knife blocks into the machine

ίο the clamp connection of the auxiliary device with the Knife block loosened and the auxiliary device removed.

The invention is explained in more detail below with reference to a drawing.

F i g. 1 shows a front view of the invention Contraption,

V i g. 2 shows the device according to FIG. 1 seen from above;
in Fig. 3 is an end view of the device shown.

On a clamping plate 2 of flat U-profile that by designated 7 screws via a terminal strip 10 on a dashed line Knife block 3 is clamped with knives 8 (Fig. 3), two double-armed levers 4 are arranged, the lower end by a push rod (not denoted), are articulated at the upper end by a safety bar 1 to form a parallelogram.

This Spannleistc 1 is with a number of pins 9 or the like corresponding to the number of knives 8. Mistake, which grip between the knives 8 (FIG. 2).

If the push rod is now moved to the right by turning the star grip 5, the moves Clamping bar 1 to the left and the ends of the knives 8 inserted into the knife block 3 at an angle are set straight (i.e. perpendicular to the knife block) so that the knife block 3 without the slightest Effort can be put into the tufting machine. As soon as the knives 8 with their «grippers are in contact and the knife block 5 is fixed in the machine, the one that acts on the knife 8 will be Bending stress is canceled by turning the star grip 5 in the opposite direction and the Auxiliary device removed from knife block 3 by loosening clamping screws 7.

1 sheet of drawings

Claims (1)

Claim; Auxiliary device for inserting a knife block equipped with a large number of knives a loop cutter in a tufting machine, the knives by lateral Moving can be brought into contact with the associated grippers and then the knife blocks can be fixed, characterized by a clamping plate (2) encompassing the knife block (3) of flat U-profile, on the two double-armed Lever (4) are arranged, which at one end by means of a spindle (6) to be actuated Push rod, at its other end by a with between the knife (8) engaging pins (9) or the like. provided clamping bar (1) are articulated to form a parallelogram.