DE4312472C1 - Deflecting device for heald-frame pull ropes on weaving machines - Google Patents

Abstract

The invention relates to a deflecting device for heald-frame pull ropes on weaving machines, the rope pulls connected to a heald loom working counter to tension springs and the respective rope pull being positively connected via a catch element to the pull rod of the corresponding heald frame, the coordination of the heald frames being brought about for the purpose of the article change and a device being connected to the weaving machine in the region of the exposed rope pulls in such a way that the rope pulls can be deflected out of their pulling plane and can be released from the pull rods of the heald frames. The solution according to the invention is characterised in that the device 1 consists of a tension bar 3 known per se, which is received by carrier elements 6 and can be applied to the rope pulls 2 and which is operatively connected to at least one drive 4 and allows an adjusting movement of the tension bar 3 in relation to the pulling plane 5 of the rope pulls 2, and the drive 4 has means for blocking the adjusting movement against returns in any phase. <IMAGE>

Description

The invention relates to a deflection device for shaft cables on looms, in connection with a dobby standing cables work against tension springs and the respective Cable via a locking element in a form-fitting manner with the pull rod of the Heald shaft or is directly connected to the heald shaft, and whereby for the purpose of changing articles, the equality of Heald frames are brought about, and a facility in the area the exposed cables are connected to the weaving machine in this way is that the cables can be deflected from their plane and from the Tension rods or the heald frames are detachable.

A known machine-independent shaft pull deflection device the applicant consists of an attachable to the cables Clamping beam. On both sides of the clamping beam there is an art a crank-trained support pin is available. This Support pins engage in a recess in the Loom wall existing and spaced apart arranged support elements.

At the free end of one of the support pins is a tension arm can be used, the with the manually applied swivel movement Support pin rotates and thus the clamping beam against the spring-loaded cables. The locking element that connects two single pull ropes to form a shaft pull from which respective guide in the drawbar or heald frame pulled out. The then under relatively high tension standing clamping arm is with one in the area of its Swiveling movement associated locking.

The tension arm now remains in the locking position until the article change, d. H. the shaft change is completed.  

However, such a solution has considerable handling Shortcomings. In particular, there is always the risk that in the event of handling errors by the operator during the Locking and releasing process of the tension arm, the tension arm strikes back against the tensioning direction. On the one hand, there is with the known shaft pull deflection device, there is always the risk an accident at work.

On the other hand, there are also considerable physical forces Realization of the deflection of the cables is necessary.

From EP-PS 0 161 375 a device for connecting the Cable with a shaft known. After that, each shaft instructs the crossbar extension elements in which one in the direction of Shaft movement running toothing is incorporated. In these Toothing engages a counter toothing of the top and lower cable connecting tab.

By means of a gripping around the attachment element and the tab Clamping element is a between the teeth non-positive connection established; with that is the respective one Shank operatively connected to the shaft drive device. This solution is rational and effective Article change unsuitable, which is particularly the case time-consuming disassembly and assembly of the connection of the shaft and shaft drive becomes clear.

The object of the invention is therefore a Shaft pull deflection device to create the risk of a Accident at work due to handling errors during the Avoids deflection of cables and at the same time an effective one Loosening and connection of shaft and shaft drive guaranteed.

The object is achieved in that the Clamping beam is operatively connected to at least one drive and the drive moves the clamping beam to the  Train level of the cables is allowed and the drive means has the adjustment movement in each phase of Block the shaft pull deflection against provisions independently.

In a preferred embodiment, the drive according to the invention is a gear means with self-locking, preferably a Electric motor or manually operated worm drive.

Instead of the swivel arm according to the known solution The applicant is with one of the support pins of the clamping beam according to the invention, the worm gear connected. The clamping beam with the support pin and that as a drive Worm gear used thus form a first version the deflection device according to the invention.

A second deflection device according to the invention formed that as support elements for the aforementioned Deflection device acting itself drive for the Deflection device are.

In this case, a worm gear is dispensed with. The carrier elements are no longer fixed to the Weaving machine wall connected, but in the same motor adjustable. Each carrier element is as Rack and pinion combination or as a piston rod one Piston-cylinder unit formed.

The support elements are thus in the transverse plane to the cables slidable in the loom wall, d. H. out of the wall and arranged mobile.

With the solutions according to the invention are those according to the known State of the art known risks of an accident at work are due to handling errors by the operator, completely turned off.

Another advantage is the absence of physical stress the operator.  

It is also advantageous that in the case of the machine-bound Drive for the clamping beam a link with the Loom control is possible and therefore largely based on one manual intervention in the process of shaft pull deflection can be dispensed with.

In the following the invention is based on an embodiment shown in more detail.

The drawing shows:

Fig. 1, the main components of the deflection device according to the prior art,

Fig. 2 equipped with a gear means deflection device.

In Fig. 1 the known prior art solution is shown. Half-sided heald frames 10 and the loom wall 7 with the carrier elements 6 firmly connected to it are shown here in a schematic representation.

For the sake of clarity, the pull rods 9 and the pull cables 2 engaging in the pull rod 9 are shown only on the outer heald frames.

It should be mentioned that the tie rods 9 can be omitted and the cables 2 engage directly in the longitudinal struts of the shafts, not shown in detail here.

At the outer ends of the clamping beam 3 , a support pin 3 a is fastened in such a way that its longitudinal axis runs parallel and at a distance from one another with respect to the longitudinal axis of the clamping beam 3 .

The support pins 3 a are received in an upwardly open recess 6 a of the respective carrier element 6 . One of the support pins 3 a can be connected to a swivel arm, not shown here.

A rotation of the support pin 3 a in the direction of arrow 11 then also swivels out the tensioning beam 3 resting on the cables 2 in the direction of arrow 11 .

The cables 2 , which are under the tension of a spring assembly (not shown), and the locking elements 2 a ( FIG. 2) connecting them are deflected from the tension plane 5 . The locking elements 2 a slide out of the guides 9 a of the pull rod 9 . An exemplary embodiment of the solution according to the invention is shown in FIG. 2.

Here is one of the support pin 3 a with the worm wheel of the worm drive 4 in connection. Tensioning beam 3 and worm drive 4 together form a machine-independent, ie transportable, deflection device for the cable pulls 2 .

The housing of the worm drive 4 is designed so that it can be plugged onto the free end of one of the carrier elements 6 .

A securing element 12 on the worm housing ensures that the deflection device 1 is locked on the carrier element 6 .

On the shaft 8 of the screw, for. B. an electromotive or manually driven drive means can be used.

Reference list

1 facility
2 shaft pull
2 a locking element
3 tension bars
3 a support pin
4 drive
5 train level
6 support element
6 a recess
7 weaving machine wall
8 wave
9 tie rod
9 a leadership
10 heald frame
11 direction of arrow
12 securing element.

Claims (11)

1.Deflection device for shaft ropes on looms, the cables connected to a shaft machine working against tension springs and the respective rope being positively connected to the pull rod of the corresponding heald frame via a latching element, the equality of the heald frames being brought about for the purpose of changing the article and one Device in the area of the exposed cable pulls is connected to the weaving machine in such a way that the cable pulls can be deflected out of their pulling plane and detached from the pull rods of the heald frames, characterized in that the device ( 1 ) consists of a known to the cable pulls ( 2nd ) attachable clamping bar ( 3 ), which is operatively connected to at least one drive and allows an adjustment movement of the clamping bar ( 3 ) on the pull plane ( 5 ) of the cable pulls ( 2 ) and the drive has means which block the adjustment movement in every phase against resetting . 2. Deflection device according to claim 1, characterized in that the deflection device with carrier elements ( 6 ) on the weaving machine wall ( 7 ) can be connected. 3. Deflection device according to claim 2, characterized in that the carrier elements ( 6 ) are firmly connected to the weaving machine wall ( 7 ). 4. Deflection device according to claim 2 and 3, characterized in that the carrier elements ( 6 ) are part of the deflection device. 5. Deflection device according to one of claims 2 to 4, characterized in that the carrier elements ( 6 ) are motor-adjustable in the weaving machine wall ( 7 ). 6. Deflection device according to claim 5, characterized in that each carrier element ( 6 ) is designed as a toothed rack with a drive pinion. 7. Deflection device according to claim 5, characterized in that each carrier element ( 6 ) is designed as a piston rod of a piston-cylinder unit. 8. Deflection device according to claim 1, characterized in that the drive is a gear means ( 4 ) with self-locking. 9. Deflection device according to claim 8, characterized in that the gear means ( 4 ) via a shaft ( 8 ) is motor-operated. 10. Deflection device according to claim 8, characterized in that the gear means ( 4 ) via the shaft ( 8 ) can be actuated manually. 11. Deflection device according to claim 1, characterized characterized in that the deflection device is preferably machine-independent.