JP3274851B2 - Partial warping machine for patterned warp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warping drum in which a conveyor belt parallel to an axis and a dividing rod parallel to the axis are disposed on a peripheral surface and held with rigidity in a torsional direction. , A rotary creel, and a yarn guide disposed in front of the warping drum and driven in synchronization with the creel, and these yarn guides pull out a single yarn from the rotary creel and feed the yarn onto a conveyor belt. Also, the present invention relates to a partial warping machine for a pattern warp, in which a separating device feeds a yarn above or below a dividing rod.

[0002]

2. Description of the Related Art Such a basic partial warper is known from EP 0 375 480. By means of the dividing rods, for example, shedding or cutting can be performed. The sorting device has a solenoid. This partial warper has defects,
In particular, there is a defect in tracing

The object of the present invention is to provide a partial warper for a handle warp of the type described at the outset, which operates very reliably.

[0004]

According to the present invention, there is provided, according to the present invention, a method in which a sorting device comprises an advancing angle dependent on an angular velocity (v).
The problem is solved by operating the sorting device in accordance with (α) and increasing the advance angle as the rotational speed of the yarn guide increases.

[0005] This configuration is based on the consideration that a certain time elapses from the operation of the sorting device to the actual displacement. This time depends on the mode of operation, for example pneumatic operation, and on the structure of the sorting device, for example the inertia of the machine parts to be displaced. However, according to the present invention, it is not sufficient to operate in consideration of the fixed advance angle. Rather,
This advance angle should be dependent on the rotational speed, that is, on the speed. At any speed, i.e., at very high speeds, this is achieved by performing the adjusting operation exactly where necessary to optimally grip the yarn. As a result, defects in the shedding and other defects can be prevented. As a particular advantage, this partial warper can be operated at speeds of 1000 m / min, which were hitherto unattainable, but on the other hand also operate without fault at low speeds of, for example, 40 m / min. .

If only one yarn guide is provided for feeding the single yarn onto the warping drum, this problem is not so significant yet. However, when a plurality of yarns are supplied at the same time, the sorting device is set so that the time difference between the yarn passing the side of the dividing rod and the next yarn is small and the wrong yarn is not caught. It is important to control very strictly (accurately) in terms of time.

[0007] Particularly preferably, the dividing rod carries a dividing hook near its end facing the yarn guide, the dividing hook being moved from the first position in front of the supplied yarn by an operating device. By being displaceable in a second position behind the yarn and vice versa, a sorting device is formed. The dividing hook ensures that the yarn is grasped.

[0008] In a further advantageous embodiment, the operating device is formed by a pneumatic piston and cylinder unit and an associated solenoid valve, both of which are arranged inside the dividing rod. In this configuration, the machine operation component is adjacent to the dividing hook, and the mass to be moved is reduced.

Preferably, the control device has a storage area for storing a function of a lead angle depending on an angular velocity. With this configuration, the lead angle required each time is automatically calculated by the control device.

Preferably, the advance angle is increased by 1 ° to 10 ° every time the speed is increased by 100 m / min.

Further, the present invention is configured so that the advance angle is constant up to a speed of about 30 to 50 m / min.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on preferred embodiments with reference to the drawings.

The warp partial warping machine shown in FIG. 1 has a warping drum 1, and a circumferential surface of the warping drum 1 is gently moved (conveyed) in a direction of an arrow 3 parallel to an axis. The conveyor belt 2 and dividing rods 4, 5, and 6 parallel to the axis are arranged. The dividing rods 4, 5, 6
Can also be called a lead rod or cutting rod, depending on their function.

The rotary creel 7 has a rotating body 8 which carries a number of bobbins 9 and is driven by a cardan shaft 17. The yarn guide 11 provided at one end of the warping drum 1 is driven in synchronization with the rotating body 8 of the rotary creel 7. The yarn guide 11 pulls out the yarn 12 from the rotary creel 7 and feeds it onto the conveyor belt 2, and selectively feeds it above or below the dividing rods 4, 5 and 6.

During this work process, the warping drum 1 is held with rigidity in the torsional direction, and a yarn layer moving in the direction of arrow 3 is obtained. Next, in the second work process, a plurality of yarns are simultaneously pulled out from the rotating warping drum 1, and a pattern warp composed of a large number of yarns is obtained.

As shown in FIG. 2, each of the yarn guides 11 is fixed to the radial spokes 14 via an arm 13 extending above (to the outer periphery of) the end of the warping drum 1. The spoke hub 15 is driven by a motor 16. Synchronization of the rotation of the rotary creel 7 with the rotary body 8 is easily achieved by the fact that both parts are connected to one another via a cardan shaft 17. Assume that the direction of rotation is clockwise (see arrow 18).
In doing so, the yarn 12 reaches the area of the dividing hooks 19 of the dividing rod 4, by means of which the yarn can be fed below or above the dividing rod 4. As mentioned above, here, the dividing hook 19 forms part of the sorting device 27.

FIG. 3 shows, in cross section, the end of a dividing rod 4 configured as a pipe. A solenoid valve 21 disposed inside a pipe is connected to a pneumatic piston / cylinder unit 24 via union joints 22 and 23. The piston rod 25 is connected to the guide part 26 of the dividing hook 19, while the piston-cylinder unit 24 and the solenoid valve 21 form an operating device 20 by which the dividing hook 19 is placed in a solid position. A can operate from A to dashed position B and vice versa. The dividing hook 19 is provided in the slot 2 in the wall of the dividing rod 4.
8, the dividing rod 4 terminates as a distal end 30 via the inclined portion 29.

The yarn 12 is substantially separated from the dividing hook 19.
Is supplied between the positions A and B. When the dividing hook 19 is at the position B, the yarn 12 is supplied onto the dividing rod 4, that is, the lower surface thereof in FIG. However, when the dividing hook 19 is at the position A, when the dividing hook 19 moves to the position B, the dividing hook 19 can take the yarn 12 and move in the direction of the tip 30, and thus the yarn 12 moves along the inclined portion 29. Dividing rod 4
3, that is, in FIG. 3, on the upper surface of the dividing rod 4. This mode of operation is schematically illustrated in FIG. 4, where the dividing hook 19 in the dividing rod 4 occupies the A position and the dividing hook in the dividing rod 5 occupies the B position.

On the basis of the inertia of the mechanical moving parts in the sorting device 27 and the duration of the operation steps (operation of the solenoid valve 21 and displacement of the pneumatic piston / cylinder unit), the device in which the attached thread guide 11 is in operation is operated. Before reaching the ding hook 19, the operation of the sorting device 27 takes place, that is, before reaching the dividing hook 19, an electrical command of the advance angle α (FIG. 1) is issued to the solenoid valve 21.
That is, the control device 31 sends an operation command 32 to the solenoid valve 21. The controller 31 has an input end 33 for the yarn feeding speed v and a storage area 34 in which the advance angle α is calculated as a function of the winding speed v. The control for accelerating this operation makes it possible to accurately operate the dividing hook 19 at the time when the yarn 12 has to be carried. As a result, there is no danger that the hook will grab the leading or trailing yarn 12 even at high speeds.

FIG. 5 shows a preferable correlation between the advance angle α and the yarn feeding speed v. The lead angle α is constant up to the value of v _min . v during speed increase up to the value of _max, the lead angle α linearly, each time a particular 100 m / min speed increasing 1-1
0 °, preferably 4-6 °.

[Brief description of the drawings]

FIG. 1 is a perspective view three-dimensionally showing a partial warper for a handle warp capable of realizing the present invention.

FIG. 2 is a schematic view showing the cooperative operation of a rotary creel and a thread guide having a slightly modified embodiment.

FIG. 3 is a longitudinal sectional view of a dividing rod end portion.

FIG. 4 is a view of two adjacent dividing rods as viewed from an outer side surface.

FIG. 5 is a diagram showing a correlation between a lead angle α and a yarn feeding speed v.

[Explanation of symbols]

 4 Dividing rod 12 Thread 27 Sorting device 31 Control device

Continued on the front page (72) Inventor Bogdan Bogki-Land Germany 63067 Offenbach am Main Rathenaustrasse 16a (56) References JP-A-62-62942 (JP, A) JP-A-10-168694 (JP, A) JP-A-8-60477 (JP, A) European publication 375480 (EP, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) D02H 3/00

Claims (6)

(57) [Claims] 1. A warping drum having a conveyor belt parallel to an axis and a dividing rod parallel to the axis arranged on its peripheral surface and rigidly held in a torsional direction; a rotary creel; A yarn guide disposed in front of the warping drum and driven in synchronization with the creel. These yarn guides pull out a single yarn from the rotary creel, feed the yarn onto a conveyor belt, and sort the yarn. In a partial warping machine for a pattern warp, wherein a yarn is fed above or below a dividing rod by a device, a control device (31) controls a lead angle depending on an angular velocity (v).
Operating the sorting device (27 ) in response to (α) , and
This advance angle (α) increases with the rotation speed of the yarn guide (11).
Partial warping machine for a pattern warp characterized by increasing the number of warps. 2. The dividing rod (4 to 6).
Carry a dividing hook (19) near its end facing the yarn guide (11), which is in a first position (A) in front of the yarn supplied by the operating device (20). 2. The sorting device according to claim 1, wherein the sorting device is configured to be displaceable in a second position (B) behind the yarn and vice versa. 3. Partial warping machine for patterned warp. 3. The operating device (20) comprises a pneumatic piston / cylinder unit (24) and an associated solenoid valve (21).
3. A warp machine according to claim 2, wherein both are arranged inside the dividing rod (4). 4. The control device according to claim 1, wherein the control unit is configured to control an angular velocity (v).
Area (3) for storing the function of the advance angle (α) depending on
The partial warping machine for a patterned warp according to any one of claims 1 to 3, wherein 4) is provided. 5. The patterned warp yarn according to claim 1, wherein the advance angle (α) increases by 1 ° to 10 ° every time the speed is increased by 100 m / min. Part warping machine. 6. The patterned warp portion according to claim 1, wherein the advancing angle (α) is constant up to a speed of about 30 to 50 m / min. Warping machine.