JPH08260281A - High-speed warper - Google Patents

Abstract

PURPOSE: To carry out the high-speed warping with good stability by performing the reciprocation freed of loss in normal and reverse rotation changeover by controlling the reciprocation of a bracket connected to a warping reed part by the operation of an AC servo motor and a ball screw. CONSTITUTION: An AC servo motor 1 is driven based on signals from left and right proximity switches 8 and 8' to normally and reversibly rotate a ball screw 3 in a warper. Thereby, a bracket 5 screwed onto the ball screw 3 is reciprocated. As a result, a warping reed part A linked to the bracket 5 is reciprocated to perform the operation of the warping reed part A reciprocated in response to the warping width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed warper for warping a warp knitting yarn into a beam.

[0002]

2. Description of the Related Art In a conventional warper, a bar having a tip bearing is engaged with a cam groove portion of a rotating cam, and the cam rotates to reciprocate at a constant speed with respect to the yarn through the bar. Was being given. However, a part of the groove of the cam that imparts the constant-speed reciprocating motion receives a sudden load. As a result, the groove is heavily worn and often damaged. Moreover, the width of the cam groove must be a little wider than the diameter of the bearing at the tip of the bar, it is easily subject to impact, the noise is severe, only low speed movement is possible, and the warping effect is low.

Therefore, for the purpose of high-speed rotation, a forward / reverse rotation clutch capable of transmitting rotation to the ball screw has been proposed (see Japanese Patent Laid-Open No. 5-9832), but the input side of the forward / reverse rotation clutch is constantly rotating. It was assumed that no problems would occur, but it was revealed that the reaction of the forward rotation and reverse rotation on the output side also affected the input side, which slightly impacted the reducer. Further, the transmission of rotation from the output side of the forward / reverse rotation clutch to the ball screw is performed by the timing belt and the pulley.
It affected the timing belt, which caused a loss in transmission of reciprocating constant velocity motion.

In view of the above, the present invention has been made with the object of eliminating such problems and achieving higher speeds without any problems.

[0005]

SUMMARY OF THE INVENTION The present invention, which achieves the above object and solves the above problems, provides a warper for reciprocating a warping reed portion according to the warp width. A high-speed warping machine having the following mechanism. (1) A bracket connected to the warping reed to give a reciprocating motion (2) A ball screw equipped to give a reciprocating motion to the bracket (3) An AC servomotor that gives forward and reverse rotation to the ball screw (4) AC A left and right proximity switch that gives a signal to a servo motor to control the reciprocating distance of the bracket. Further, the warping reed portion has a warping reed plate that rotates between two shafts as described in claim 2. It is preferable that it can be reciprocated by being connected to the.

[0006]

In the high-speed warping machine having the above structure, in order to reciprocate with the bracket with respect to the warping reed portion, the AC servo motor rotates the ball screw, and the ball screw temporarily moves the bracket rightward. When actuated, a part of the bracket moves to the right until it contacts the right proximity switch, and when the proximity switch is contacted and a signal is given to the AC servo motor, the AC servo motor reverses from the previous operation. The movement is transmitted to the ball screw, which in turn moves the bracket to the left, moving until a portion of the bracket contacts the left sensor. Then, when the signal is applied to the AC servo motor by contacting the proximity switch on the left side, the AC servo motor can return to the original operation. By these operations, the bracket is reciprocated, and the bracket is reciprocated with respect to the warping reed portion, so that the yarn can be warped on the beam by the warp width. The warp width can be adjusted by adjusting the distance between the left and right proximity switches.

Particularly, regarding the warp reed portion, when the warp reed plate is connected to the rotating plastic roller between the two shafts so as to be able to reciprocate, the friction resistance is reduced. The reciprocating motion can be applied.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing the warping reed part A.
The outline of a high-speed warping machine for reciprocating is shown. In the figure, 1 is an AC servomotor having both a deceleration function and a forward / reverse rotation function, 3 is a ball screw interlocking forward / reverse rotation from the AC servomotor 1 through a coupling 2, and 4 and 4'are ball screws. Pillow blocks 5 pivotally supporting both sides of 3 are brackets which can be reciprocated by the rotation of the ball screw 3. The bracket 5 is provided with a bearing 50 as a part thereof through a bar 51.
A lever 6 is connected to the bracket 5 with respect to the warped reed portion A so as to reciprocate the warped reed portion A. Reference numerals 8 and 8 ′ are proximity switches for detecting the reciprocating movement of the bearing 50 which is a part of the bracket 5. The AC servo motor 1 sends a signal to control the reciprocating movement of the bracket 5.
Connected to. The rotation direction of the AC servomotor 1 can be switched instantaneously. Reference numerals 9 and 9'indicate limit switches for driving safety. Proximity switch 8, 8 '
And a mount 10 having limit switches 9, 9 ',
10 'is fitted and held on the support shaft 11, and can be moved and adjusted by the left screw shaft 12 and the right screw shaft 12', respectively, so that the reciprocating distance of the bracket 5 for warping can be adjusted. That is, since it is not shown in FIG. 1 because it is hidden by other parts, the left and right screw shafts 1 as shown in the partial view of FIG.
2, 12 'are supported by the intermediate support block 13,
By operating the right and left screw shafts 12 and 12 'from the handle 14 through the bevel box 15 to the right rotation or the left rotation, the proximity switch interval can be widened or narrowed to reduce the reciprocating distance (0 to 200 mm) of the bracket 5. You will have control.

FIG. 3 shows an outline of the flow of the yarn Y,
The yarn Y is warped from the creel stand side C to the beam side B via the warping reed portion A. FIG. 4 shows an operating portion of the warp reed plate a. The warp reed plate a and the plastic roller R are connected by a pin 7, and the plastic roller R has two longitudinal pipe-shaped shafts 20, 2.
The warp reed portion A is allowed to travel while rotating, and the left and right reciprocating movements of the plate a of the warp reed portion A are slid by the plastic roller R, so that the warp reed plate a on the conventional shaft is moved. It has less friction than a slippery one, and is considered to be suitable for high speed operation. Shafts 20 and 20 'sandwiching the plastic roller R are inserted into a fixed bracket 21, and the fixed bracket 21 is fixedly supported by a support shaft 22.

Further, although not shown in the embodying apparatus,
In order not to damage the thread at the time of starting, the rotation of the beam and the reciprocating movement of the warp reed part are driven by a separate inverter motor so that the speed can be slowly rotated and the speed gradually increased. There is. As described above, according to the device of the present invention, the left and right proximity switches 8 and 8'and the AC servomotor 1 are transmitted as a unit to the ball screw 3 so that the bracket 5 is controlled to reciprocate. Therefore, the yarn can be warped by the operation described in the section of action.

[0011]

As described above, according to the present invention, the left and right movements, which are reciprocating movements with respect to the warp reed portion, are operated by the AC servomotor by the signals from the left and right proximity switches to operate the ball screw. By making the bracket reciprocate above and transmitting it to the warping reed part,
There is no loss of transmission for switching between forward and reverse rotation, and much faster warping is possible compared to the past, shortening operating time and speeding up, and lowering the operating noise of the device, high speed stability, Also for the adjustment of the warp width, there is an effect that the selection can be easily made by the distance between the left and right proximity switches, the number of parts can be reduced, and the advantage that the equipment can be installed without taking up the device space is great.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing the present invention.

FIG. 2 is a schematic diagram of a proximity switch portion.

FIG. 3 is a side view showing an outline of a yarn flow.

FIG. 4 is a vertical sectional side view showing a reciprocating operation portion of the warp reed plate.

[Explanation of symbols]

 A Warp reed part a Plate 1 AC servo motor 3 Ball screw 5 Bracket 6 Lever 8, 8'Left and right proximity switch Y thread

Claims (2)

[Claims] 1. A high-speed warper having the following mechanism in a warper that reciprocates a warping reed portion according to a warp width. (1) A bracket connected to the warping reed to give a reciprocating motion (2) A ball screw equipped to give a reciprocating motion to the bracket (3) An AC servomotor that gives forward and reverse rotation to the ball screw (4) AC Left and right proximity switches that give a signal to the servomotor to control the reciprocating distance of the bracket 2. The high-speed warping machine according to claim 1, wherein the warping reed part is configured such that a warping reed plate is connected between two rotating shafts and is connected to a rotating plastic roller so as to be able to reciprocate.