JP2007107128A - Selvedge shedding device in loom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a selvedge shedding device reducing a load on a driving motor side on shedding the selvedge thread. <P>SOLUTION: This woven selvedge texture W is woven by continuing selvedge shedding motion such that the one directional continuous rotation of a servo motor 7 continuously rotates a rotary body 15 on a shaft 11 in one direction, a link 17 moves up and down by a crank motion accompanying the rotation of the rotary body 15 to swing the swinging member 21 in up and down direction, when the swinging member 21 is swung in a counter-clockwise direction, a first sliding body 32 and a heddle 42 are pushed downward through a first rod 24, the selvedge thread Y held at a thread-inserting hole 43 is shed on the lower side, on one hand, a second sliding body 33 and heddle 50 are pulled up through a second rod 25, the selvedge thread held at the thread-inserting hole is shed on the upper side, on further rotating the rotary body 15, the swinging member 21 is swung in reverse direction, and the selvedge thread Y held by the heddle 42 and heddle 50 is shed in the opposite direction to the above direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an ear thread opening device used for a weaving ear or a discarding ear of a loom.

  Ear yarns are arranged in parallel to the warp group, and are used to form a discarded ear for processing the weft ends or to form a woven ear tissue at the end of the woven fabric. Various configurations of the ear yarn opening device have been proposed. ing.

  For example, Patent Document 1 discloses an ear thread opening device having the following configuration. That is, in the ear thread opening device shown in FIGS. 1 to 4 of Patent Document 1, the ear guide yarns 8 and 9 are held, and the yarn guides 2 and 3 that linearly move in the vertical direction are connected to the connecting rods 16 and 17. The cranks 14 and 15 are connected to the motor shaft 13 of the stepping motor 12 that reciprocally rotates the cranks 14 and 15.

Japanese National Patent Publication No. 10-503563

  The ear thread opening device disclosed in Patent Document 1 is configured to directly transmit the swinging motion of the cranks 14 and 15 attached to the stepping motor 12 to the thread guides 2 and 3 of the ear weaving yarns 8 and 9. A large load due to the tension of the yarn, the weight of the yarn guide and the like, and the sliding resistance is directly applied to the motor shaft 13. As a result, the motor bearing is easily damaged, and there is a big problem that the life of the ear thread opening device is shortened.

  An object of the present invention is to provide an ear thread opening device configured to reduce a load applied to a drive motor side when an ear thread is opened.

  According to a first aspect of the present invention, a rotating body connected to a drive motor and rotated on a side of a warp and a swinging member supported so as to be swingable are provided, and the rotating body and the swinging member are arranged. Are connected by a link to transmit the motion of the rotating body to the swinging member as a reciprocating swinging motion, and the swinging member is connected to the bag by a connecting mechanism including a sliding member arranged to be linearly movable. This is an ear thread opening device.

  According to the first aspect of the present invention, the rotating body rotated by the drive motor and the swinging member that gives the reciprocating motion to the heel are separated, and both are connected by a link to swing the load when the ear thread is opened. It can be received by the member, and the load on the drive motor side can be reduced.

  According to the second aspect of the present invention, since the rotating body is configured in a lever shape, the rotating body can also be reduced in size and weight, so that it can contribute to load reduction on the drive motor side.

  According to a third aspect of the present invention, the rotating body is configured to continuously rotate in one direction by the drive motor, and the diameter of the rotation locus of the rotating body is shorter than the maximum length of the link.

  According to the third aspect of the present invention, the load is less than when the drive motor is reciprocally rotated, and the rotation control of the drive motor and the timing control of the ear thread opening motion are easy. Further, since the rotating body can be made compact, it is possible to generate a crank motion in a small space, so that the ear thread opening device can be made compact, and it contributes to the load reduction on the drive motor side.

  In the present invention of claim 4, since the reduction gear train is interposed between the drive motor and the rotating body, the torque required for the drive motor is small, and a small motor can be used. .

  According to the fifth aspect of the present invention, since the rotating body and the swinging member are arranged on the same plane, a space for installing the ear thread opening device can be reduced.

  According to the sixth aspect of the present invention, since the link is connected at a position close to the swing fulcrum of the swing member, transmission of load, vibration and impact generated when the ear thread is opened to the rotating body side is reduced. Can do.

  The present invention can reduce the load on the drive motor side when the ear thread is opened.

Hereinafter, the best embodiment of the present invention will be described with reference to FIGS.
The ear thread opening device in the present embodiment is located on the end side of a warp opening heel frame (not shown) and is disposed on the front side of the loom of the heel frame, and the ear tissue W at the end of the woven fabric (see FIG. 2). An example used for weaving is shown.
A mounting plate 2 formed in a U-shape and a mounting plate 3 on a flat plate are superimposed on the top rail 1 forming a part of the frame of the loom toward the rear side of the loom, and the bolt 4 is vertically suspended. It is fixed by. An L-shaped mounting bracket 5 is fixed to the front surface of the mounting plate 3 (the surface facing the right side in FIG. 2) with bolts 6.

A servo motor 7 as a drive motor is fixed on the mounting bracket 5 with bolts 8, and a motor shaft 9 of the servo motor 7 protrudes toward the mounting plate 3, and has a small-diameter gear 10 at the tip thereof. The servomotor 7 is controlled to rotate continuously in one direction.
A shaft 11 having a large-diameter gear 13 is rotatably supported on the top of the mounting plate 3 by a bearing 12 fixed to the front surface of the mounting plate 3. The large-diameter gear 13 meshes with the small-diameter gear 10 provided on the motor shaft 9 to constitute a reduction gear train.

  The shaft 11 also protrudes from the back surface of the mounting plate 3 (the surface facing the left side in FIG. 2), and a lever-shaped rotating body 15 formed in a rectangular parallelepiped shape is fixed to the tip of the mounting plate 3 by a bolt (not shown). Yes. As shown in FIG. 1, the rotating body 15 has two mounting holes 16 with different phases in the radial direction in an arm protruding in one direction around the shaft 11, and two similar mounting positions in the symmetrical position of the other arm. It has a hole 16.

Below the mounting plate 3, a shaft 19 is rotatably supported by a bearing 20 fixed to the front surface of the mounting plate 3. The shaft 19 protrudes from the back surface of the mounting plate 3, and a lever-shaped swinging member 21 is fixed to the tip of the mounting plate 3 by a bolt 22.
The arrangement position of the swing member 21 is set to be on the same plane as the rotating body 15. This setting can be appropriately performed by selecting the length of the sleeve 14, for example.

One end of a link 17 is rotatably attached to a selected mounting hole 16 of the rotating body 15 by a bolt 18 and a bearing (not shown), and the rotating body 15 and the link 17 constitute a crank. The maximum length of the link 17 is set longer than the diameter of the rotation locus of the rotating body 15. The amount of movement of the link 17 is set by selecting the mounting hole 16.
The other end of the link 17 is rotatably attached to the swing member 21 by a bolt 23. As the attachment position of the other end of the link 17, a position close to the shaft 19 that is the pivot point of the swing member 21 is selected. The distance from the shaft 19 to the position at which the link 17 is attached to the swing member 21 is an element that determines the swing amount of the swing member 21 together with the attachment position of the link 17 on the rotating body 15 side. Further, bringing the attachment position of the link 17 close to the swing fulcrum of the swing member 21 can be expected to have an effect of making it difficult to transmit the load, vibration, and impact to the rotating body 15 side.

  On the other hand, the upper end of the guide body 28 extending downward is fixed to the recess of the mounting plate 2 by a bolt 29. Details of the guide body 28 are shown in FIG. 1B, which is a cross-sectional view taken along line AA of FIG. The guide body 28 has a T-shaped first guide groove 30 extending in the entire longitudinal direction of the guide body 28 on the back surface thereof, and a T-shaped second guide groove extending in the entire longitudinal direction of the guide body 28 on the front surface. 31 is engraved.

A first sliding body 32 having a predetermined length is attached to the first guide groove 30 of the guide body 28 and guided so as to be capable of linear movement in the vertical direction. A second sliding body 33 having a length is attached and guided so as to be capable of linear movement in the vertical direction.
The first sliding body 32 and the second sliding body 33 are both made of carbon tape and have high durability due to high strength and non-lubricating performance.

  The upper end of the first rod 24 that connects the swing member 21 and the first sliding body 32 has a bolt 26 and a bearing (see FIG. 1) on the back side of the end of one arm of the swing member 21 (left side of FIG. 1A). The lower end is rotatably attached to the upper back side of the first sliding body 32 by a pin 34.

  Similarly, the second rod 25 connecting the swing member 21 and the second sliding body 33 has a bolt 27 on the front side of the end of the other arm of the swing member 21 (the right side in FIG. 1A). And a bearing (not shown) is rotatably attached, and a lower end is rotatably attached to the upper front side of the second sliding body 33 by a pin 35.

  The first rod 24 and the second rod 25 are in a state of being accommodated in the recess portion of the mounting plate 2 while being connected to the swing member 21, the first sliding body 32, and the second sliding body 33. Further, as shown in FIG. 2, the guide body 28 has a predetermined thickness (not shown) so that the second rod 25 is accommodated between the front surface of the guide body 28 and the back surface of the recessed portion of the mounting plate 2. It is being fixed to the hollow part via.

  One end of a first upper frame 36 and a first lower frame 37 having a predetermined length extending in the lateral direction are fixed to the upper and lower ends of the first sliding body 32 by bolts 40 and 41 through blocks 38 and 39, respectively. Yes. The first upper frame 36 and the first lower frame 37 are in a state of projecting to the back side of the guide body 28, and a plurality of hooks 42 (only three are shown in FIG. 1) having threading holes 43 in that portion. ) Is built up and down.

  Similarly, one end of a second upper frame 44 and a second lower frame 45 of a predetermined length extending in the lateral direction is attached to the upper end and the lower end of the second sliding body 33 by bolts 48 and 49 via blocks 46 and 47, respectively. It is fixed. The second upper frame 44 and the second lower frame 45 are in a state of projecting to the front side of the guide body 28, and a plurality of hooks 50 (only three are shown in FIG. 1) provided with threading holes 51 in that portion. ) Is built up and down.

  As is clear from FIG. 1B, the first upper frame 36, the first lower frame 37, the second upper frame 44, and the second lower frame 45 have a configuration in which a thin plate is protruded laterally from the guide body 28. Therefore, only these frames may be arranged between the warp heel frame and the heel located in the forefront not shown, and there is an advantage that a large space in the front-rear direction of the loom is not required.

  The ear threads Y shown in FIG. 2 are inserted into the threading holes 43 and 51 of the hooks 42 and 50, respectively, and an ear thread opening is formed by the vertical movement of the hooks 42 and 50 in opposite directions. The weft yarn (not shown) is inserted here, and the woven ear tissue W is woven.

The operational effects of the present embodiment configured as described above will be described below.
By pressing an operation button of a control panel (not shown), the servo motor 7 of the ear thread opening device shown in FIG. One-way continuous rotation of the servo motor 7 is transmitted from the drive gear 9 to the driven gear 13 at a reduced speed, and the rotating body 15 on the shaft 11 is continuously rotated in one direction.

  As the rotating body 15 rotates, the link 17 moves up and down by the crank motion, and the swinging member 21 swings in the vertical direction. For example, as shown in FIG. 3, when the swing member 21 is swung counterclockwise, the first sliding body 32 is pushed downward via the first rod 24, so that the collar 42 is positioned below and the yarn 42 The ear thread Y held in the through hole 43 opens downward.

On the other hand, since the second sliding body 33 is pulled upward via the second rod 25, the hook 50 is positioned upward, and the ear thread Y held in the threading hole 51 opens upward.
When the rotating body 15 further rotates, the swinging member 21 swings in the clockwise direction contrary to the case of FIG. 3, and the hooks 42 and 50 open the ear yarn Y in the opposite direction. By continuing this ear thread opening movement, the woven ear tissue W is woven together with the weft not shown.

  In the present embodiment, the servo motor 7 does not directly drive the swing member 21 with a large load, but drives the rotating body 15 with a relatively small load, so that a motor with a small capacity can be employed. As a result, the entire ear thread opening device can be reduced in size, and can be appropriately disposed even in a very narrow space surrounded by the warp opening reed frame, the reed and the loom frame.

In addition, since all the mechanisms including the motor 7 and the small-diameter gear 10 can be attached to one attachment plate 2 and 3, the ear thread opening device is unitized and attached to and removed from the loom. Can be facilitated.
Moreover, since the 1st sliding body 32 and the 2nd sliding body 33 were comprised with the carbon tape, thickness can be made thin and it contributes further to size reduction of an ear thread | yarn opening device.

(Second Embodiment)
The second embodiment shown in FIGS. 4 and 5 is a modification of the swing member 21 in the best embodiment. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The oscillating member 52 is formed in a three-pronged lever shape provided with a protruding portion 53 that protrudes upward when in the horizontal intermediate position in FIG. The rotating body 15 is arranged on the right side of FIG. 4, and its shaft 11 is connected to the motor shaft 9 of the servo motor 7 via the large diameter gear 13 and the small diameter gear 10 on the front side of the mounting plate 3. The other end of the link 17 rotatably connected to one of the mounting holes 16 of the rotating body 15 by a bolt 18 and a bearing (not shown) is rotatably connected to the protrusion 53 by a pin 54.

Therefore, the swing member 52 of the second embodiment is configured to transmit the driving force from the left and right directions in FIG. 4, but the ear thread opening motion is performed in the same manner as in the best embodiment.
In the second embodiment, the rotating body 15 can be arranged in a direction away from a warp opening hook frame (not shown), and the arrangement of the constituent members can be provided with a degree of freedom.

  The present invention is not limited to the configuration of each embodiment described above, and various modifications are possible within the scope of the gist of the invention, and can be implemented as follows.

(1) The rotating body 15 is not limited to a rectangular parallelepiped, and may be formed of a disk or a rotating body of another shape.
(2) The swing member 21 is not limited to a lever-shaped object, and may be a disk shape. In this way, the connecting position of the link 17 can be freely set without the need for the projection 53 as in the second embodiment.

(3) As the drive motor 7, a stepping motor or another motor capable of rotation control can be used.
(4) The rotation control of the drive motor 7 can be performed not by continuous rotation in one direction but by reciprocal rotation at a predetermined angle.

(5) The mounting plates 2 and 3 are not configured as separate members, but are configured as a single mounting plate, and each component can be attached to the mounting plate as a unit.
(6) The guide body 28 can be configured by bonding a plate having the first guide groove 30 and a plate having the second guide groove 31 bonded together.

(7) The first sliding body 32 and the second sliding body 33 can use a resin tape or a fiber reinforced resin tape instead of the carbon tape.
(8) The reduction gear train including the small-diameter gear 10 of the motor 7 and the large-diameter gear 13 of the rotating body 15 can be replaced with a configuration using a timing belt.

  (9) The small-diameter gear 10 and the large-diameter gear 13 can be omitted, and the motor shaft 9 of the motor 7 can be directly connected to the shaft 11 of the rotating body 15. In this way, the ear thread opening device can be further simplified.

(10) The number of ear threads to be used is not limited to six in the embodiment, and can be up to about 2 to 80, and is appropriately set according to the tissue.
(11) Although each of the above embodiments has been described for forming a woven ear tissue, it can be implemented as an ear thread opening device for forming a discarded ear that grips the end of the weft yarn when the weft is inserted on the side of the woven fabric.
(12) The ear thread opening device can be arranged behind the last warp opening hook frame.

(A) is a front view showing an ear thread opening device. (B) is the sectional view on the AA line of (a). It is a side view of Fig.1 (a). It is a front view which shows operation | movement of an ear thread | yarn opening apparatus. It is the front view which abbreviate | omitted a part of ear thread opening device which shows 2nd Embodiment. FIG. 5 is a side view of FIG. 4.

Explanation of symbols

2, 3 Mounting plate 7 Servo motor 10 Drive gear 13 Driven gear 15 Rotating body 17 Link 21, 52 Swing member 24 First rod 25 Second rod 28 Guide body 30 First guide groove 31 Second guide groove 32 First slide Moving body 33 Second sliding body 36 First upper frame 37 First lower frame 42, 50 ４３ 43, 51 Threading hole 44 Second upper frame 45 Second lower frame

Claims (6)

Ears that provide hooks that hold at least two ear threads arranged on the sides of the warp group, and that reciprocate in the opposite directions by the driving force transmitted from the drive motor to form the ear thread openings. In the yarn opening device,
A rotating body connected to the drive motor for rotation and a swinging member supported so as to be swingable are disposed on the side of the warp yarn, and the rotating body and the swinging member are connected by a link. Transmitting the motion of the rotating body to the rocking member as a reciprocating rocking motion;
An ear thread opening device in a loom, wherein the swinging member is connected to the heel by a connecting mechanism including a sliding body arranged to be linearly movable. 2. The ear thread opening device for a loom according to claim 1, wherein the rotating body is configured in a lever shape. The ear in the loom according to claim 1 or 2, wherein the rotating body is configured to continuously rotate in one direction by the drive motor, and a diameter of a rotation locus of the rotating body is shorter than a maximum length of the link. Yarn opening device. The ear yarn opening device for a loom according to any one of claims 1 to 3, wherein a reduction gear train is interposed between the drive motor and the rotating body. The ear thread opening device for a loom according to any one of claims 1 to 4, wherein the rotating body and the swinging member are arranged on the same plane. The ear thread opening device for a loom according to any one of claims 1 to 5, wherein the link is connected at a position close to a swing fulcrum of the swing member.

Images