JPH08109552A - Automatic reed drawing-in machine - Google Patents

Abstract

PURPOSE: To provide an automatic reed drawing-in machine capable of surely threading a warp between reed dents and provided with a malfunction checking function at a low cost. CONSTITUTION: A reed drawing-in device 22 movable in the longitudinal direction of a reed 8 is placed in a warp-supporting frame 1 movable in the longitudinal direction of the reed 8 held in horizontal state with a reed holding mechanism 9. The reed drawing-in device 22 hooks a warp 5 with a hook part 31 at a protruded edge tiltable in vertical direction and swingable in lateral direction and successively passes the warp through the space between the reed dents of the reed 8. The original position of the swinging motion of the reed drawing-in device 22 is detected by an electrical contact and the reed drawing-in device 22 is shifted between the adjacent reed dents by one pitch by the detection signal. The shifted amount of the reed drawing-in device 22 is detected and the rightness of the shifted amount is judged by a computing function, by comparing the detected signal with a standard signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic reed threading machine for sequentially passing a large number of warp threads stretched in parallel between the reed blades of a reed in a weaving preparation step.

[0002]

2. Description of the Related Art Conventionally, various automatic reeding machines have been proposed, as disclosed in Japanese Patent Laid-Open Nos. 49-116362 and 5-98544.

[0003]

However, the conventional automatic reed threading machine is not only uncertain in the operation of pulling the warp thread between the reed blades, but also has many functions not to check it. . Further, it is known that an image processing technique is applied to have a check function, but in this case, it is inevitable that the cost is increased.

Therefore, an object of the present invention is to provide an automatic reed threading machine which can reliably pass warps between reed blades and has a check function at low cost.

[0005]

According to the present invention, in order to achieve the above-mentioned object, a reciprocating warp yarn provided on a base so as to be movable in a longitudinal direction of the reed is stretched on both sides thereof. Warp support frame, a reed holding mechanism provided on the base for holding the reeds facing the warp groups stretched by the warp support frame, and movement of the reeds in the longitudinal direction within the warp support frame. And a reed threader that sequentially pulls the warp thread hooked at the hook portion of the tip edge that can be rotated in the vertical direction and swinging in the horizontal direction between the reed blades of the reed,
An origin position detecting means for detecting the origin position of the swinging motion of the reed threader, a moving means for moving the reed threader by one pitch between the descending reed blades, and a movement amount of the reed threader. There is provided an automatic reeding machine comprising a moving amount detecting means and a calculating means for comparing an output signal of the moving amount detecting means with a reference signal to determine whether the moving amount is appropriate.

[0006]

In the reed threading machine of the present invention, the hook is provided in the warp support frame so that the reed can be moved in the longitudinal direction and can be pivoted in the vertical direction and can be swung in the lateral direction. It has, and the warp hooked by this hook is sequentially passed between the reed blades of the reed. On the other hand, the origin position of the swinging motion of the reed is detected by the origin position detecting means, and the moving means moves the reed through the pitch of the reed one by one pitch. The movement of the reeds is repeated in sequence using the reed wing. As a result, the reed threader can reliably pull out the warp between the reeds at its hook portion.

Further, since the output signal of the moving amount detecting means is compared with the reference signal by the calculating means and the suitability thereof is determined, it is automatically checked whether or not the reeder has actually moved at a predetermined pitch. be able to.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

The automatic reed threading machine shown in FIG. 1 has a warp support frame 1 formed in an H shape, and this warp support frame 1 has a pair of clips 2 and 3 provided at both upper edges thereof. The warp yarn group 5 pulled out through the heddle frame 4 is stretched by. When the handle 7 of the screw mechanism 6 fixing one of the clips 2 is rotated, the clip 2 moves forward and backward, so that an appropriate tension can be applied to the warp group 5. One end of the reed 8 is sandwiched by a clip-shaped reed holding mechanism 9 in a state where the longitudinal direction thereof is orthogonal to the warp group 5, whereby the horizontal position facing the warp group 5 is maintained. . The warp support frame 1 is a traveling wheel 1
0 and a guide wheel 11, and can be moved in a longitudinal direction of the reed 8 on a pair of running tracks 13, 13 laid on a base 12. The support base 14 that supports the reed holding mechanism 9 is fixed to the base 12. A drive motor 15 and a gear 16 for moving the warp support frame 1 are provided.

The reed threading unit 17 provided in combination with the warp support frame 1 has a pair of rails 18 laid on the base 12, wheels 19 traveling on a pair of rails 18 and a feed screw 20 for traveling drive. are doing. Both legs of the rail receiver 21 with respect to the pair of rails 18, 18 have a pair of running tracks 1
It is fixed in contact with 3, 3 respectively. Both ends of the feed screw 20 for traveling drive are fixed to the base 12, and a feed nut screwed to the feed screw 20 rotates as described later. With this rotation, the reed unit 17 moves stepwise in the longitudinal direction of the reed 8.

The reed threading unit 17 includes a reed threader 22,
A reed thread cutter 23, a warp separator 24, a reed thread clip 25, a thread hooking lever 26, a thread guide 27, a thread wiping rotary disk 28, a controller 29 and the like are mounted. As will be described later, the reciprocator 22 has a hook portion 31 at the tip end edge thereof, which is capable of pivoting in the up-down direction and swinging in the left-right direction about the support shaft portion 30. Further, the warp yarn separator 24 has a traverse pipe 32 that swings by a twill string inserted, and the rotary disc 28 for yarn wiping has the yarn wiping claw 3
Three. Reference numeral 5a in the figure denotes a warp drawn through the reed between the reeds.

As shown in FIGS. 2 and 3, the reed threader 22 has a frame-shaped first movable body 34 which is rotatable about a support shaft portion 30 in a vertical direction, and a first movable body 34. A metal L-shaped second movable body 36, which is housed inside and is capable of swinging in the left-right direction about the support shaft portion 35 and has a hook portion 31 at the tip edge, and the swing amount is adjusted. And a conductive contact 38 for forming an open / closed contact type switch between the knob 37 with a screw and a second movable body 36, and the rear end edge of the second movable body 36 is always pulled toward the knob 37 side. And a spring 39 having a suction action. In addition, 3 in the figure
6a is a protruding edge of the second movable body 36, and 8a to 8d are reeds 8
Reeds are shown respectively.

The operation of the reed threading device 22 constructed as above will be described with reference to FIGS. 3 and 4. FIG.
In the initial stage shown in (3), the protruding edge 36a of the second movable body 36 of the reed threader 22 enters between the reed blades 8a and 8b and contacts the reed blade 8b. Then, the rear end edge of the second movable body 36 comes into contact with the conductive contact 38 to close the switch by both, and from this stage, the first movable body 34 rotates about the support shaft portion 30. (In the direction indicated by arrow A ′ in FIG. 3), the second
The entire movable body 36 descends in the direction of arrow A. The second movable body 36 having the protruding edge 36a escaped from between the reed blades 8a and 8b by this descending movement of the second movable body 36 in the direction shown by the arrow B in FIG. As a result, the switch turns to the open state. This swinging motion is obtained by the spring pressure of the spring 39, and the amount of swinging motion is determined by a preset distance X between the screw knob 37 and the second movable body 36. And
The protruding end edge 36a of the second movable body 36 that has made a swinging motion is
It has moved to an intermediate position between the reed blades 8b and 8c.

Next, since the first movable body 34 pivots upward about the support shaft portion 30, the second movable body 36 is indicated by an arrow C in FIG. 4C while maintaining the swinging state. Rise in the direction. Then, the protruding edge 36a enters between the reed blades 8b and 8c.

Next, since the whole reeding unit 17 is moved in the direction shown by arrow E in FIG. 4D by the feed screw 20 for driving the traveling, the projecting edge 36 of the second movable body 36 is moved.
a contacts the reed wing 8c. Then, while maintaining this contact state, the second movable body 36 itself rotates about the support shaft portion 35 in the direction indicated by the arrow D. That is, the swinging motion is returned to the original position, and the switch is closed at the end of this rotation. That is, the switch serves as an origin position detecting means for the swinging motion. Therefore, this switch is used to selectively drive an electromagnetic clutch and an electromagnetic brake, which will be described later, thereby controlling the movement of the reed unit 17.

By such an operation, one cycle of the reed feeding operation is completed, and the warp group 5 is hooked and lowered by the hook portion 31 sequentially in each cycle. At the stage shown in FIG. 4 (b), the thread-displacement rotary disc 2
The thread clearing claw 33 of 8 brushes off the warp from the reed threading device 22, and the dropped off warp thread 5a hangs down between the reed blades.

The traveling drive feed screw 20 is incorporated in the moving device shown in FIGS. 5 and 6. A gear 42 fixed to a main shaft 41 of the moving device 40 is connected to a drive motor (not shown). When the main shaft 41 rotates, the drive gear 45 mounted together with the electromagnetic clutch 43 and the electromagnetic brake 44 rotates. This guy 45
The gear 46 meshing with the feed nut shaft 47 is integral with the feed nut shaft 47, and the feed nut portion 49 connected to the feed nut shaft 47 via the bracket 48 is provided with a feed screw 20.
Both ends of the feed screw 20 that rotates by being screwed on the base 12
Since it is fixed to, only the moving device 40 moves.
The feed nut portion 49 has a split nut structure, and 50 denotes a feed nut cleaning brush holder.

The gear 52 of the rotary encoder 51 is
The rotary encoder 51, which meshes with the drive gear 45, detects the amount of movement of the reed unit 17 for each cycle and outputs a detection signal. Therefore, the detection output of the rotary encoder 51 is input to the arithmetic unit of the controller 29 and compared with a preset reference value to determine whether the movement amount is appropriate. It is desirable that the reference value be updated with the average value of the detection outputs detected by the rotary encoder 51 three or several times. As an example, the determination by the computing unit gives a warning as "small movement amount" if it is 50% or less of the reference value and "large movement amount" if it is 150% or more, and the operation of the reed unit 17 To stop.

The reed threader 22 according to another embodiment of the present invention.
Is shown in FIGS. 7 and 8. Here, the same reference numerals are given to members common to the above-described embodiments. The first movable body 34 of the reciprocator 22 shown in FIG. 7 is equipped with a second movable body 36, a conductive contact 38 and a spring 39, but the second movable body 36 serves as a center of the swinging motion. It is connected to the lower arm 53 near the shaft portion 35, and the lower reed passing piece 54 having the hook portion 31 and the spring piece 55 are fixed to the tip end portion of the lower arm 53. Furthermore, the upper reed thread 5
An arch-shaped upper arm 57 in which 6 is fixed to the tip is engaged with the lower arm 53 by two gears 58 and 59 meshing with each other. The center shafts 60 and 61 of the two gears 58 and 59 are screw rods, and the two gears 58 and 5 are
A pair of central shafts 60 and 61 that rotate in synchronization with each other allows the gap between the lower reed passing piece 54 and the upper reed passing piece 56 to be adjusted.

In the initial stage shown in FIG. 8A, the lower reed passing piece 54 and the spring piece 55 enter between the reed blades 8a and 8b, and the lower reed passing piece 54 contacts the reed blade 8b. There is. Therefore, the switch constituted by the second movable body 36 and the conductive contact 38 is closed, and the reed unit 17 stops traveling. The gap G between the lower reed passing piece 54 and the upper reed passing piece 56 is wider than the plate thickness T of the reed blade,
The pitch is set narrower than the pitch of reed wing.

Next, the reed threader 22 rotates about the support shaft portion 30 and descends in the direction shown by the arrow A, so that the state shown in FIG. 8B is entered. At this stage, the upper reed piece 56 is inserted between the reed blades 8b and 8c, so that the spring piece 55 is curved by the reed blade 8b in a direction away from the upper reed piece 56. Then, by continuing further lowering, the state shifts to the state shown in FIG. 8C, where the spring piece 55 returns by the spring pressure of itself. Then, the spring 39 shown in FIG. 7 draws the second movable body 36, and the second movable body 36 makes a swinging motion in the direction of the arrow B around the support shaft portion 35, so that the switch is turned to the open state.

From this state, the reeder 22 is shown in FIG. 8 (d).
When it rises in the direction indicated by arrow C, the tip end of the spring piece 55 enters between the reed blades 8b and 8c. Then, by continuing to rise, the state moves to the state shown in (e) of FIG. 8, the lower reed passing piece 54 also enters between the reed blades 8b and 8c, and then shifts to the state shown in (f) of FIG. .

Here, the lower reed thread 54 is the spring 3
The spring pressure of 9 causes the head to swing further in the direction indicated by the arrow B, but since the second movable body 36 does not contact the conductive contact 38 even if the lower reed passing piece 54 contacts the reed blade 8c, The entire reed unit 17 starts moving in the direction indicated by arrow D. As a result, the lower reed passing piece 36 is reed 8c.
The movement in the direction of arrow D continues even after the contact with. Therefore, the first movable body 36 rotates in the direction indicated by the arrow E in FIG. 8G, returns to the state before the swinging motion, and the switch is closed to reed. The traveling of the unit 17 is stopped, and the reed operation for one cycle is completed.

At the stage shown in FIG. 8 (a), the traversing pipe 32 of the warp separator 24 operates to separate the warped yarn, which is held by the reed thread clip 25. Then, the reed thread cutter 23 cuts only this warp, and the thread hooking lever 26 hooks this warp on the hook portion 31 of the lower reed thread 54.

At the stage shown in FIG. 8 (c), the rotary disk 28 for thread wiping rotates, and the thread wiping claw 33 has its hook portion 3 formed.
Hook the warp hanging on 1 and pull it out below the reed 8.

At the stage shown in FIG. 8 (f), the electromagnetic clutch 4 of the moving device 40 with respect to the reed unit 17 is moved.
3 is energized (at the same time, the electromagnetic brake is turned off), the feed nut portion 49 rotates, and the entire reed unit 17 moves.

Then, at the stage shown in FIG. 8 (g), the lower reed passing piece 54 is pressed by the reed blades, and the switch constituted by the second movable body 36 and the conductive contact 38 is closed. , The electromagnetic clutch 43 is turned off, and the electromagnetic brake 44 is turned on.

In this reeding operation, the distance that the reeding unit 17 has moved stepwise is detected by the output signal of the rotary encoder 51. In other words, by comparing this detection signal with the reference value in the arithmetic unit,
It is determined whether or not the pitch has been accurately moved, and based on this determination result, the reed is continued or interrupted.

[0029]

As described above, according to the present invention, the protruding edge having the hook portion of the reed threader is generated when the reed blade moves vertically and swings horizontally. Since the reed threading device is moved stepwise by the generated electric signal, the operation of pulling the warp thread between the reed blades can be surely obtained, and it is automatically and costly whether or not it is operating at a predetermined moving amount. It can be checked at low cost and the efficiency of reed work can be improved.

[Brief description of drawings]

FIG. 1 is a side view of an automatic reeding machine according to an embodiment of the present invention.

FIG. 2 is a perspective view of a reed threader according to an embodiment of the present invention.

FIG. 3 is a partially cutaway perspective view of a reed threader according to an embodiment of the present invention.

FIG. 4 is an operation explanatory diagram of the reed threader according to the embodiment of the present invention.

FIG. 5 is a side sectional view of a traveling drive unit of the reed unit according to the embodiment of the present invention.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a schematic perspective view of a reed threader according to another embodiment of the present invention.

FIG. 8 is a diagram for explaining the operation of the reed threader according to another embodiment of the present invention.

[Explanation of symbols]

 1 Warp Support Frame 5 Warp Group 8 Reed 17 Reed Unit 20 Travel Drive Feed Screw 22 Reed Threader 29 Controller 31 Hook 34 First Movable Body 36 Second Movable Body 38 Conductive Contact 39 Spring

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[Procedure amendment]

[Submission date] November 22, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

FIG.

[Fig. 2]

[Figure 3]

[Figure 6]

[Figure 4]

[Figure 5]

[Figure 7]

[Figure 8]

Front page continued (72) Inventor Kameda Naojo 391 Gojoshitaru Osaka-cho, Karasuma-dori, Shimogyo-ku, Kyoto Prefecture 391 No. 10 Hase Building, 5th floor Todo Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A warp support frame, which is provided on a base so as to be movable in the longitudinal direction of the reed and stretches the crossed warp on both sides thereof, and a warp group stretched by the warp support frame. And the reed holding mechanism provided on the base to hold the reed, and the reed can be moved in the longitudinal direction within the warp support frame, and can be rotated in the vertical direction and the swinging motion in the left and right directions. The reed threader that sequentially draws the warp hooked by the hook part of the tip edge between the reed blades of the reed, and the origin position detection means that detects the origin position of the swinging motion of the reed threader, and the reed thread A moving means for moving the bowl by one pitch between the reed blades, a moving amount detecting means for detecting the moving amount of the reed threading device, and a moving signal comparing the output signal of the moving amount detecting means with a reference signal. It is characterized in that it comprises an arithmetic means for judging the suitability of the quantity. And an automatic reed machine.