JP2006118080A - Warping comb - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a warping comb for arranging a number of yarns at regular intervals arbitrarily adjustable by the expansion and contraction of a pantograph mechanism while automatically correcting the deviation of the yarn intervals only at the center of the warping comb from the intervals at the other parts. <P>SOLUTION: Extension mechanisms 7R, 7L divided to the right and left are extended and contracted by operation shafts 3 movable in axial direction. When the extension mechanisms 7R, 7L are extended or contracted by the rotation of the operation shafts 3R, 3L, the right and left operation shafts 3R, 3L are axially moved to approach or separate at a definite ratio proportional to the extension or contraction amount of the extension mechanisms. The interval A between the two center yarns 32a is corrected by the operation to the interval equal to the intervals B of the other yarns. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a warp comb in which a plurality of yarns are arranged at a constant interval, and in particular, a stretching mechanism divided into left and right is expanded and contracted by a thread of an operation shaft arranged parallel to the expansion and contraction direction. Thus, the present invention relates to a warp comb that sets the interval between the yarns to a desired interval.

  When a warp is wound around a beam in preparation for weaving, a warp comb is used to align the intervals of a number of warps to be wound at intervals suitable for the fabric to be woven. A warp comb is provided with a number of comb teeth (needles) for guiding the yarns one by one, and the interval between the yarns is adjusted by adjusting the interval between the comb teeth when projected in the drawing direction of the yarn. Is called.

  That is, as shown in FIG. 5, when a plurality of unit combs 16 each having a predetermined number of comb teeth 15 are arranged in a zigzag shape and expanded or contracted in the left-right direction, the drawing direction of the yarn 32 and the comb teeth By using the fact that the angle θ formed by the 15 arrangement surfaces changes and the yarn interval B is B = Csinθ with respect to the comb interval C, the interval between the aligned yarns 32 is set to a desired interval. It is set.

  As a mechanism for arranging the unit combs 16 in a zigzag shape, a so-called pantograph mechanism in which a plurality of X links that pivotally connect the intersection points P is used is used, and the effective width D (FIG. 2) of the unit combs 16 is set to the X link. By setting the length equal to one of the link lengths, the yarn interval B does not vary between the unit combs 16 when the pantograph mechanism is expanded or contracted.

  On the other hand, it is desirable to change the winding width and the yarn interval when winding the warp around the beam symmetrically with respect to the center of the beam. Therefore, it is desired that the pantograph mechanism expands and contracts with the width center as a fixed point. Further, since the yarns are collected and aligned from the left and right creels toward the warp comb, the traveling direction of the left and right yarns is reversed with respect to the width center of the warp comb. This causes a problem that the interval between the yarns at the center of the warp comb is distorted.

  That is, as shown in FIG. 3, in the structure in which the intersection point P of the center X link is fixed to the center Q in the width direction of the warping comb, when the interval between the comb teeth 15a and 15a located on both sides is E, The distance A between the yarns guided by the two becomes A = Esin θ-d (d is the diameter of the comb teeth), and there is a difference between the change of A and the change of B when θ changes. The spacing A between the yarns is different from the spacing B between the other portions.

In addition, as shown in FIG. 4, when the pantograph mechanism is divided into left and right and expanded and contracted to the left and right with the intersection P ₀ at the inner end as a fixed point, The interval A of the yarn 32a changes greatly in the direction opposite to the yarn interval B of the other portion, and a large deviation occurs in the yarn interval A of this portion. Therefore, when such a structure is employed, conventionally, every time the angle θ is changed, the fixing point P _{0 is} manually set so that the central yarn interval A is the same as the yarn interval B of other portions. The position was adjusted.

  This invention solves the above-mentioned problem, that is, in a warp comb in which the interval between the aligned yarns can be arbitrarily set by expanding and contracting a pantograph mechanism and other expansion and contraction mechanisms, the thread interval is changed. Automatically corrects the phenomenon in which only the yarn interval A at the center of the warp comb is different from the yarn interval B at other locations, so that the yarn interval A at the center of the warp comb is changed to another portion. It is an object to obtain a warp comb that can be changed in the same manner as the yarn interval B.

  In the present invention, the above problem is solved by providing a mechanism for moving the operation shaft in the axial direction in conjunction with the rotation of the operation shafts 3L and 3R for extending and contracting the expansion and contraction mechanisms 7L and 7R divided into the left and right. That is, in the warp comb of the present invention, the operation shaft 3 for expanding and contracting the expansion mechanisms 7L and 7R divided in the left and right directions is provided so as to be movable in the axial direction, and the expansion and contraction mechanisms 7L and 7R are expanded and contracted by the rotation of the operation shafts 3L and 3R. When this is done, the distance A between the two central yarns 32a is corrected by axially moving the left and right operating shafts 3L, 3R in a direction to approach or separate from each other at a constant ratio proportional to the amount of expansion and contraction. Thus, the above problem is solved by providing a mechanism that automatically corrects the interval so as to be the same as the yarn interval B of other portions.

  The warp comb according to the first aspect of the present invention includes a pantograph mechanism 7 formed by connecting a plurality of X links 10 pivotally connected to an intersection P, and a pantograph mechanism that is arranged in the expansion and contraction direction of the pantograph mechanism. The operation shaft 3 including the thread 6 to be threaded and the unit comb 16 attached to each of the X links, and the yarns 32 guided by the comb teeth 15 of the plurality of unit combs 16 that are continuous in a zigzag shape. In the warp comb in which the interval B is set by the rotation of the operation shaft, the interval A between the yarns 32a at the adjacent boundary between the left and right pantograph mechanisms 7L, 7R is set by the axial movement of the operation shaft. A shaft feed screw 29 and a rotary coupling device 31 for rotating the screwing member 28 of the shaft feed screw at a predetermined rotation ratio with respect to the operation shaft are provided.

  The transmission gear ratio R of the rotary coupling machine 31 required to change the central thread interval A in the same manner as the other thread intervals B is the pitch P1 of the thread 6 for expanding / contracting the expansion / contraction mechanism 7. The pitch P2 of the shaft feed screw 29 changes, the number K of the X links 10 constituting the pantograph mechanism, and the number n of comb teeth planted in the unit comb. Usually, the pitches P1, P2 and the number K of the X links are constant, but the number n of comb teeth planted in the unit comb 16 varies depending on the thickness of the yarn used, the weave density, and the like. Since the rotary coupling machine 31 is used, when the number n of the comb teeth of the unit comb 16 is changed, it is preferable that the rotary coupling machine 31 is replaced with one having a different gear ratio or the gear ratio can be changed.

  The invention according to claim 2 of the present application is the warp comb according to claim 1, wherein the screwing member 28 is inserted into the operation shaft 3 so as to be relatively rotatable and not axially movable, and the operation shaft. The rotary coupling machine 31 that can be exchanged or shifted to couple the screwing member is provided.

  According to the present invention, when the operation shaft 3 is rotated and the interval between the yarns 32 guided by the warping comb is changed, the central yarn interval A is set to another portion as the operation shaft 3 rotates. The operation shaft 3 moves in the axial direction so as to have an interval equal to the yarn interval B. That is, when the expansion / contraction mechanism 7 is expanded / contracted to change the yarn interval, the central yarn interval A and the yarn interval B of other portions are always set to the same interval regardless of the amount of change. Since the adjustment and correction of the interval are automatically performed only by the rotation operation of the operation shaft 3, no special operation for making the center yarn interval A coincide with the yarn interval B of other portions is required. There is an effect.

Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a fixed guide frame having a U-shaped cross section, which is mounted in a direction orthogonal to a direction in which wefts to be aligned are pulled out. Inside the guide frame 1, a right operating shaft 3R and a left operating shaft 3L are arranged on the left and right of the longitudinal center 2, and the both operating shafts 3R and 3L are not rotatable relative to the longitudinal center 2 and are axially arranged. It is fitted so as to be relatively movable. A base end slide 4 is slidably provided along the guide frame 1 at the center end portion of the operation shafts 3R and 3L, and on both sides thereof (only the right side is shown in the figure). The telescopic slide 5 is slidably fitted to the guide frame 1. The base end slide 4 pivotally supports the center side end portions of the operation shafts 3R and 3L so as to be rotatable and not capable of relative movement in the axial direction. The telescopic slide 5 is screwed to a screw 6 provided on the operation shaft 3R. ing.

  The expansion / contraction mechanism 7 is a pantograph mechanism in which a plurality of (5 in the example shown in the figure) X links 10 each having the middle points of the long and short links 8 and 9 pivoted to each other are connected to each other at its inner end. Bolt insertion holes are provided in the shaft centers of the intersection pins 11b and 11a at the outer ends, and the bolts inserted into the bolt insertion holes are screwed into the female screw holes 13 provided in the center of the upper surfaces of the slides 4 and 5, A pantograph mechanism 7 is mounted on the guide frame 1 between the slides 4 and 5.

  The intersection pin 11 of each X link is fixed to the short link 9 to connect the long link 8 so as to be swingable. The base 17 of the unit comb 16 shown in FIG. The slit 18 to be inserted is provided so as to coincide with the direction of the short link 9. That is, by fitting and fixing the unit combs 16 into the slits 18 of the respective intersection pins, the warp combs 19 in a state where a plurality (5 in the figure) of unit combs 16 are connected in a zigzag manner are formed. Since the base end slide 4 is not movable in the axial direction with respect to the operation shaft 3 and the telescopic slide 5 is screwed, by rotating the operation shaft 3, the telescopic slide 5 is screwed back and forth, and the pantograph. The mechanism 7 is expanded and contracted, and the angle θ of the comb teeth array surface is changed to change the interval between the yarns guided thereby.

  A handle 20 is fixed to the outer end of the operation shaft 3 (3L, 3R). Gear boxes 21 are formed at both ends of the guide frame 1, and the operation shaft 3 passes through the gear box. The gear box 21 accommodates first to fourth gears 22, 23, 24, 25 supported in parallel with the operation shaft 3 from the driving side to the driven side. The first gear 22 is a set screw. 26, the second gear 23 and the third gear 24 are integrated, and the fourth gear 25 is axially formed by a boss 22a of the first gear 22 and a snap ring 27 fitted to the operation shaft 3R. It is mounted so as to be freely rotatable with respect to the operation shaft 3 and immovable in the axial direction.

  The fourth gear 25 is integrally provided with a cylindrical boss (screwing member) 28, and a male screw (axial feed screw) 29 provided on the outer peripheral surface of the boss is screwed with a female screw 30 provided on the gear box. is doing. That is, when the fourth gear 25 rotates, the fourth gear 25, and thus the operation shaft 3, moves in the axial direction by the screwing action of the screws 29 and 30. The second gear 23 that meshes with the first gear 22 and the third gear 24 that meshes with the fourth gear are wide so that the meshing with the first gear 22 and the fourth gear 25 is not disengaged by the movement of the operation shaft. It is a gear.

Here, the distance between the links of the X link 10 is S1, the distance between the intersection pins 11b at the center ends of the left and right pantograph mechanisms (the distance between the central links) is S2, and the number of links between the slides 4 and 5 is L (L = K−). 1) The number of comb teeth of the unit comb is n, the diameter of the comb teeth is d, the pitch of the expansion and contraction screw 6 is P1, the pitch of the shaft feed screw 29 is P2, and the rotation of the fourth gear 25 with respect to the handle rotational speed r1. If the ratio r2 / r1 of the number r2 is R (the reduction ratio of the gear trains 22 to 25),
R = (P1 / P2) ((n + 1) / n) (1 / 2L)
S2 = ((n + 1) / n) S1 + d
By setting the pitches P1 and P2 of the threads and the reduction ratio R of the gear trains 22 to 25 so that the following relationship is established, the center thread interval A and the other portion thread interval B are always the same. It can be an interval. The initial value of the center link distance S2 is set when the first gear 22 is fixed to the operation shaft 3 with a set screw.

Here, while the number of links L between the slides 4 and 5 and the pitches P1 and P2 of the threads 6 and 29 do not change, the number n of comb teeth of the unit comb may change. Therefore, the number of teeth of the first gear 22 is G1, the number of teeth of the second gear 23 is G2, the number of teeth of the third gear 24 is G3, and the number of teeth of the fourth gear 25 is G4.
G2 / G1 = n / (n + 1),
G4 / G3 = 2LP2 / P1
With this setting, when changing to a unit comb having a different number of comb teeth, it is possible to cope with the change of the comb teeth by exchanging the first gear 22 and the second gear 23 and screwing into the gear box 21. Since there is no need to replace the fourth gear 25, the gear ratio of the rotary coupling machine 31 can be easily converted.

The top view which separated and expressed the pantograph and operation part of the present invention up and down Top view of unit comb Plan view of conventional example Plan view of another conventional example Explanatory drawing of the thread interval drawn when unit combs are arranged in a zigzag shape

Explanation of symbols

3 Operation shaft 7a, b Telescopic mechanism
10 X-link
11 Intersection pin
16 unit comb
28 Threaded member
29 Male thread
31 Rotary coupling machine
32a, b Thread A A Center thread spacing B Other section thread spacing P Intersection

Claims (2)

A pantograph mechanism (7) formed by connecting a plurality of X links (10) pivotally connected to the intersection (P), and a screw (6) arranged in the expansion and contraction direction of the pantograph mechanism to expand and contract the pantograph mechanism A yarn guided by comb teeth (15) of a plurality of unit combs (16) arranged in a zigzag manner, comprising an operating shaft (3) provided and unit combs (16) mounted on each of the X links In the warp comb that sets the interval (B) between the strips (32) by rotation of the operation shaft,
A shaft feed screw (29) for setting the distance (A) between the yarns (32a) at the adjacent boundary of the left and right pantograph mechanisms (7L, 7R) arranged separately by the axial movement of the operation shaft, and the operation A warp comb comprising a rotary coupling machine (31) that rotates a screwing member (28) of the shaft feed screw at a predetermined rotation ratio with respect to a shaft.   The screw coupling member (28) that is inserted into the operation shaft (3) so as to be rotatable relative to the operation shaft and cannot be moved relative to the axial direction, and the rotary coupling machine capable of exchanging or shifting the operation shaft and the screw member. The warp comb according to claim 1, further comprising (31).

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