JPS6119739B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for shedding pile warps in a jacquard machine for towel weaving.

In recent years, the number of rotations has increased due to the use of rapier towel looms, and the conventional single- or middle-opening method cannot keep up with the rotational speed of the jacquard machine, so full-opening jacquard machines have come to be used more frequently. There is.

On the other hand, when the jacquard pattern on the towel was composed of free curves such as a floral pattern, there was no problem with the full-opening method, but when the jacquard pattern was made of a frame-like pattern or a pattern composed of a frame-like frame, or vertical or horizontal lines, An inconvenience occurs in geometric patterns composed of .

In other words, if we look at the changing state of the pile on a certain weft line, for example, until now, over almost the entire width of a towel loom, only odd-numbered pile warp yarns were woven on the front surface, and only a small portion of even-numbered pile warp yarns were woven on the back side. A situation may occur in which almost all of the odd-numbered pile warp yarns are woven out on the back side, and only a few even-numbered pile warp yarns are woven out on the front side after the next weft line.

At this time, since it is fully opened, the jacquard held continues to occupy the raised (or lowered) position in the case of continuous raising (or lowering), and if the front and back conditions suddenly change as described above, the jacquard held will open all at once. As the card held changes position from raising to lowering and from lowering to raising, sudden tension changes occur in the few pile warp yarns that continue to raise (or lower) in the same way.
Until now, towels with an appropriate pile length were woven with the optimum tension for the pile structure, but now due to a sudden change in pile tension, the pile length becomes particularly short on the conversion line, and in some cases, the pile disappears. However, in woven towel fabrics, a fabric with transverse grooves may be woven in this portion.

The present invention is aimed at solving the above-mentioned drawbacks, and is intended to solve the problem when the upper pile warp yarns and the lower pile warp yarns collectively change their positions on a certain weft line during weaving, that is, when the pile warp yarns on the front side change the pile warp yarns on the back side, the pile warp yarns on the back side When launching the yarn onto the surface, the fixing force and main plate were used to ensure full shedding movement through the vertical needle movement by command perforations previously made in the jacquard paper several picks before the weft yarn. By instantly canceling its action and moving the vertical needles in a state similar to the middle opening method, the sudden tension load applied to a small number of pile warp yarns that continue to rise (or fall) at the same time is reduced. , the tension is applied evenly to all the pile warp threads.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for implementing the present invention will be described below with reference to the drawings.

In the following description, we will discuss weaving a three-width towel, and we will use a pattern paper saving device that is generally used in towel pattern weaving.

In other words, with a 3-weft pattern towel, the rotation of the cylinder is stopped while the 3 weft threads are being driven, and the same pattern paper is applied, saving 2/3 of the pattern paper. The movement is performed three times using a piece of paper. Of course, the present invention does not require a pattern paper saving device.

Therefore, the gist of the present invention can be applied to a four-width pattern towel in the same manner as the weaving of a three-width pattern towel described below.

FIG. 1 shows an upper pile vertical opening device, in which a fixed knife 1 is supported in a notch 3 of a side plate 2, and the head of the knife 1 is fitted into a recess 5 of a slide plate 4 to be positioned. Above slide plate 4
A pin 6 is fixed to the end of the connector 8, and the pin 6 is fitted into an elongated hole 9 of a connector 8 that is swingable about a shaft 7. Accordingly, by the horizontal movement of the slide plate 4 via the connector 8, the fixed knife 1 performs a pivoting motion about the lower edge of the fixed knife 1 as a fulcrum, thereby controlling the function of the vertical needle, which will be described later.

Further, the connector 8 is biased clockwise around the shaft 7 by a spring 10, and normally comes into contact with the stepped portion 12 of the fixed knife escape lever 11 and is regulated to the solid line position in FIG.

The lever 11 is pivotally supported 15 on a bracket 14 fixed to the machine frame 13, biased clockwise by a spring 16, and the end of the lever is connected with a string 17 to a signal lever to be described later.

Further, a fixed knife return lever 18 is pivotally supported 19 on the bracket 14, a connector pressing roller 20 is pivotally supported at one end of the lever, and the other end is connected to a signal lever to be described later with a string 21. Reference numeral 22 denotes a spring for returning the lever 18, which urges the lever 18 clockwise around the shaft 19.

In the above jiacard machine, normally the fixed knife 1 is located at the solid line position as shown in the first diagram, and the vertical needles 23,
24 forms a fully open shed. That is, vertical needle 2
3 is up, unless the vertical needle 23 is pushed by the horizontal needle (not shown) (that is, if there is a hole in the pattern paper), the lower hook 25 is in the position where it engages with the fixed knife 1a, so the knife Even if 26 descends, the vertical needle 2
3 doesn't go down.

When pushed by the horizontal needle, the lower hook 25 comes off the fixed knife 1a, so when the knife 26 descends, the vertical needle 23 follows the knife 26 and descends.

In addition, when the vertical needle 24 is downward, if the vertical needle 24 is pushed by a horizontal needle (not shown), the vertical needle 24 will not rise even if the knife 27 rises. If the vertical needle 24 is not pushed by the horizontal needle, the knife 27 will rise and the vertical needle 24 will rise due to the engagement of the hook 28 and the knife 27.

By providing the fixed knife 1 and the lower hook 25 in this way, a full opening is formed.

If you want to temporarily eliminate the full opening, pull the string 17 connected to the fixed knife escape lever 11 downward to connect the lever 11 and the connector 8.
is disengaged, the connector 8 pivots to the two-dot chain line position 8a, and the slide plate 4 that engages with the connector 8 with the pin moves a certain distance to the right, and the fixed knife fitted into the recess 5 of the slide plate moves to the right. 1
The fixed knives are rotated all at once using the lower ends of the fixed knives as a fulcrum, and positioned at the two-dot chain line position 1b. Therefore, the fixed knife 1 is in a position independent of the lower hook 25 of the vertical needle, and is in a state similar to the middle opening method.

FIG. 2 shows the opening device for the lower pile.
That is, the base plate 29 is placed and fixed on the frame 30, and is placed on the fixing member 31 together with the frame 30.
A large number of holes 32 are bored in the base plate 29, and a jacquard heald is fixed to a vertical needle 33 supported on the base plate by passing through the holes. Reference numeral 34 denotes a bracket fixed to the fixing member 31 at the front and rear of the base plate 29. Elongated holes 35 are formed in three places in the bracket 34,
A support member 37 inserted along a guide 36 fixed to the bracket 34 is fixed with a screw 38, and the side plate 2 supporting the fixed knife 1 is fixed to the upper end of the support member 37. Therefore, by changing the position at which the support member 37 is fixed to the bracket 34, it is possible to change the height of the fixed knife 1 and adjust the opening amount of the warp threads.

Note that FIG. 3 is a plan view showing the mounting state of the main plate 29, in which the main plate 29a to 29a, which are divided into a plurality of parts on the frame body 30, are attached.
29d is placed on the frame body 30 with bolts 39.
is fixed integrally with. 32 is the base plate 29a~
29d is a hole for penetrating the jacquard held.

Lever 41 connecting pins 40, 40 are screwed onto the front and rear of the frame 30. Further, guide shoes 42, 42 are fixed to both sides of the frame 30,
U-shaped guides 44, 44 fixed to the fixed member 43
It is slidably inserted inside.

V-shaped levers 45, 45 are pivotably supported on the front and rear fixed brackets 34, one end of the V-shaped levers 45, 45 is pivoted on a sliding rod 47, and the other end is pivoted on a sliding rod 47. is lever 41,41
are pivoted 49, 49, and the levers 45, 45 are supported by pins 40, 40 of the frame 30 on which the base plate 29 is placed and fixed.
is connected to. Therefore, the V-shaped levers 45, 45
By turning clockwise about the shafts 46, 46, the main plate 29 can be moved upward from the lower position shown by the broken line to the upper position shown by the two-dot chain line 29e.

A roller 50 is pivotally supported 51 at one end of the sliding rod 47, and the roller 50 is fitted into a recess 54 at the tip of a swinging arm 53 that is fixed to a shaft 52 and can swing as the shaft 52 rotates. . In addition, the above V-shaped lever 4
5, 45, and sliding rods 47 are similarly provided on the front and rear of the base plate 29, and only one side is shown in FIG. That is, swing arms 53 are fixed to both ends of a shaft 52 extending in a direction perpendicular to the plane of the drawing.

Further, another cam lever 55 is fixed to the shaft 52, and a roller 56 at the tip of the lever is connected to a cam plate 57.
As the cam plate 57 rotates, the cam lever 55 turns at a certain angle in the direction of arrow 58, and the swing arm 53 simultaneously moves in the direction of arrow 58 via the shaft 52 to which the cam lever 55 is fixed. Shake it.

4, 5, and 6 show a driving device for the cam plate 57. As shown in FIG. That is, the cam plate 57 is normally stopped, and only the drive shaft 59 and the disc body 60 fixed to the drive shaft 59 are constantly rotating, and only when necessary, the cam plate 57 rotates in conjunction with the disc body 60. I'm starting to do that.

5 and 6, a disc body 61 is fixed to the drive shaft 59, a disc body 60 is further fixed by bolts 62, and a cam plate 57 is attached to the disc body 60 via a bearing 63. are fitted. Therefore,
Normally, the rotation of the drive shaft 59 is not transmitted to the cam plate 57, and the drive shaft 59 and the disc body 60 only rotate integrally.

As shown in FIG. 5, the disk body 60 has a notch 64 carved in one place on its circumferential surface, and only when the engaging piece 65 provided on the end face of the cam plate 57 engages with the notch 64 does the cam plate 57 rotates.

The engaging piece 65 is mounted so as to slide in a radial slide groove 66 formed on the end face of the cam plate 57. That is, the engaging piece 65 is pivotally supported at the tip of a lever 68 that is pivotally supported 67 on the cam plate 57. , the lever 6
A spring 70 is applied to one end of another lever 69 which is pivotally supported integrally with the lever 69, and the levers 68 and 69 are biased counterclockwise about the shaft 67.
The upper end is always located outward from the circumferential surface 57a of the cam plate 57. 71 is the machine side fixed shaft 72
A stop lever pivoted on the lever 69 and biased counterclockwise by a spring 73.
The rotation of the cam plate 57 in the direction of the arrow 74 is prevented.

FIG. 4 shows the operating mechanism of the stop lever 71.

A receiving portion 77 is formed at one end of a clutch-on lever 76 that is pivotally supported by a fixed shaft 75, and supports a tip 79 of a lever 78 that rotates integrally with the stop lever 71. The lever 78 is biased counterclockwise by a spring 80, and is normally in the position shown in FIG. 4, in contact with the receiving portion 77 of the lever 76.

Furthermore, one end of a connecting rod 81 is connected to the lever 78, and the other end is connected to a lever 83 that is integrally supported with another stop lever 82 on the opposite side of the stop lever 71 by 180 degrees.

Therefore, the two stop levers 71 and 82 operate simultaneously. The other end of the lever 76 is connected via a string 84 to a clutch lever, which will be described later.

Therefore, when the string 84 is pulled downward, the lever 76 pivots around the shaft 75 in the direction of the arrow 85, so that the lever 78 follows and pivots in the direction of the arrow 86 against the spring 80, thus causing the stop lever to rotate. 71 also turns in the same direction. At this time, the stop lever 71 shown in FIG. The piece 65 descends along the slide groove 66 and engages with the notch 64 of the disc body 60 rotating together with the drive shaft 59, and the cam plate 57 begins to rotate integrally with the disc body 60.

The aperture switching operation command device T that controls the operations of the fixed blade 1 and the base plate 29 described above will be explained with reference to FIG.

A large gear 89 and a ratchet wheel 90 are loosely fitted integrally to one shaft 87 of parallel shafts 87 and 88, and the other shaft 8
A star-shaped cam 92 integral with a small gear 91 is pivotally supported on the shaft 87, and a first signal lever 93 is mounted on the shaft 87.
and a second signal lever 94 is loosely fitted. A bracket 95 is fixed to the first signal lever 93, and a pawl 96 is pivotally supported on the bracket. The pawl 96 is always urged in the direction of engagement with the pawl 90a of the ratchet wheel 90 by a spring 98 connected between the signal lever 93 and the pawl lever 97.

One end 93a of the first signal lever 93 has a vertical needle and a string 106 corresponding to a signal hole in a patterned paper (not shown).
and the other end 93b has a string 17 connected to the above-mentioned fixed knife escape lever (FIG. 11).
is fixed.

In addition, a cam roller 101 is pivotally supported at one end of an L-shaped lever 100 that is rotatably supported on a fixed shaft 99, and is biased against the circumferential surface of the star-shaped cam 92 by a spring (not shown). The other end is connected to the aforementioned clutch-on lever (see FIG. 4, 76) via a string 84.

Further, a second signal lever 94 is loosely fitted onto the shaft 87, a claw 102 is pivotally supported on the signal lever 94, and a spring 103 is biased in a direction to engage the claw 90a of the ratchet wheel 90. 94 is biased clockwise by a spring 104.

One end 94a of the signal lever 94 is connected with a string 105 to any signal needle located above the main plate, that is, at a lower position, and the other end 94b is connected to a fixed knife return lever (the first
18) via a string 21.

The gear ratio between the large gear 89 and the small gear 91 is 2:1, and the claws 90a of the ratchet wheel 90 are formed at 40 locations every 9 degrees.
are formed at five locations every 72 degrees, so that when the first signal lever 93 reciprocates three times, the cam roller 101 of the cam lever 100 moves to one top 92.
a, and the clutch-on lever operates.

A roller 107 prevents the ratchet wheel 90 from rotating freely and positions the ratchet wheel, and is supported by a lever 110 that is biased counterclockwise by a spring 109 around a shaft 108.

Next, the operation of the device of the present invention will be explained.

For example, when weaving the three-width towel 111 shown in FIG. 8, that is, when weaving a picture frame pattern towel fabric with a one-stitch average pile area S1 and a two-stitch average pile area S2 using a full-opening jacquard machine, one stitch average Pile area S
A longitudinal section of 1 is shown in FIG.

That is, the upper pile 112 and the lower pile 113 are formed P1' to P4' each time a weft is driven.

Figure 10 shows the 8th transition from 1 stitch to 2 stitches.
A longitudinal section of the pile in Figure B is shown. That is, at the driving position A2, the upper pile 112 and the lower pile 113 are collectively turned upside down. By making all the openings at the position A2 a middle opening method, sudden tension fluctuations can be prevented.

That is, in FIG. 11, A is the vertical movement of the knife 1, B is the vertical movement of the signal needle, and C is the vertical movement of the pile 1.
The opening of the needle level S1, d, the elevation of the base plate 29, and the opening of B when the pile length is changed from 1 stitch to 2 stitches.

In Fig. 11 B, by drilling a center opening command hole in the pattern paper N immediately before the position where the tension suddenly changes, that is, the switching point B from 1 stitch to 2 stitches, the command hole can be adjusted. When the signal needle 23 is moved up and down three times by the paper saving device, the first signal lever 93 shown in FIG. 7 is moved up and down three times. That is, the first lifting causes the fixed knife escape lever 11 shown in the first figure to pivot in the direction of arrow 114 via the string 17, and the connector 8 pivots clockwise around the shaft 7, causing the slide plate 4 to rotate. Through this, the fixed knife 1 is moved to the position 1b indicated by the two-dot chain line. Therefore, the fixed knife loses its original function and becomes open in the middle, so the first
If the illustrated vertical needle 23 is used as a signal needle, the signal needle 23 will move up and down three times with a stroke of 1/2 of the opening amount.

Therefore, by raising and lowering the signal needle 23, the first
The signal lever 93 moves up and down three times, and the pawl 96 of the lever 93 rotates the ratchet wheel 90 by three pawls, causing the large and small gear 8 to rotate.
As the star cam 92 rotates by one stroke via the cams 9 and 91, the cam roller 101 reaches the top 92a of the star cam 92, pivots the lever 100 counterclockwise, and pulls the string 84 downward.
That is, when the string 84 shown in the fourth figure is pulled downward, the clutching lever 76 turns in the direction of the arrow 85 about the shaft 75, and the cam plate 57 rotates 1/2 turn together with the drive shaft 59 as described above. Then, the swinging arm 53 shown in the second figure swings at a certain angle in the direction of the arrow 58, and the base plate 29 placed and fixed on the frame 30 via the sliding rod 47 is raised by 1/2 of the opening amount. I will do it.

Therefore, as shown in Figure 11 (c) and (d), the tension suddenly changes at point 1.
Both the upper pile 112 and the lower pile 113 are opened in a manner similar to the center opening method. That is, the warp thread tension that was present only in the width a of the one-stitch pile vertical S1 at the transition point B from the one-stitch pile to the two-stitch pile shown in FIG.
Since it is applied evenly across the entire length, horizontal lines at the switching point B are prevented.

Furthermore, a second signal lever 9 connected to a signal needle (for example, FIG. 1 24) other than the signal needle that activated the first signal lever 93 by lifting the main plate 29
4 is raised, the pawl 102 shown in FIG. 7 rotates the ratchet wheel 90 by one more pawl, and the cam roller 101 is guided to a position lower than the top 92a of the star-shaped cam 92, so that the clutch 102 shown in FIG. At the same time as the lever 76 is returned to its original position, the string 21 connected to the end of the second signal lever 94 is pulled downward, and the fixed knife return lever 18 shown in the first figure turns in the direction of the arrow 115.
The roller 20 presses the displaced side surface of the connector 8 to return it to its original position. Accordingly, the slide plate 4 also moves to the right, the fixed knife 1 returns to its original position, and weaving with the full opening is continued again.

Therefore, the signal needle 23 moves up and down three times on the Nth pattern paper, but the main plate 29 is raised only the third time, so that the upper pile warp thread is moved only at the point where the tension suddenly changes due to the action of the horizontal needle (not shown). By setting the center open state, the lower pile warp yarn and the lower pile warp yarn are in the center open state as shown in FIG. .

In addition, in Fig. 11B, Q1 is the middle opening command position of the upper opening, Q2 is the non-action area of the fixed knife, and Q3
Q4 is the lower middle opening command position, and Q4 is the upper middle opening release command position.

As described above, in the present invention, in a jacquard machine for towel pattern weaving that opens the upper and lower pile warp yarns by full shedding motion, at position B where the upper pile warp yarns and the lower pile warp yarns collectively switch vertically, A decimal number of upper and lower pile warp threads that keep in position,
Fig. 11C and the elimination of the pile that occurs at the switching point by opening the pile warp threads that switch vertically all at once in a state similar to the middle opening method;
Defects such as horizontal streaks can be eliminated, and since the center opening is made only at the switching point, instead of opening a few picks before the switching point, the pile warp threads that continue to maintain the upper or lower position are not vibrated. Therefore, the full opening is maintained until just before the switching point.
A stable pile is formed.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing the construction of an embodiment of a device that converts the full shedding motion of the upper pile warp yarn into a mid-shedding motion, and Fig. 2 shows the device that converts the full shedding motion of the lower pile warp yarns into a mid-sheath motion. Fig. 3 is a plan view showing the main plate placed and fixed, Fig. 4 is a front view showing the clutch for driving the cam plate, and Fig. 5 shows the connection between the cam plate and the drive shaft. FIG. 6 is a front view showing the drive transmission device, FIG. 6 is a cross-sectional side view showing the relationship between the cam plate and the drive shaft, FIG. 7 is a schematic configuration front view showing an embodiment of the aperture switching operation command device, and FIG. A plan view showing an example of a frame-patterned towel fabric, FIG. 9 is an explanatory view showing a vertical pile cross section of one stitch, and FIG. 10 is an explanatory view showing a vertical cross section of the pile at the transition from one stitch to two stitch. Figure 11A is an explanatory diagram showing the raising and lowering of the knife, Figure 11B is an explanatory diagram showing the raising and lowering of the signal needle, Figure 11C is an explanatory diagram showing an opening equivalent to one vertical needle in the pile, and Figures 11D and F are the main plate. Fig. 11E is an explanatory view showing the vertical movement of the pile when changing from one stitch to two stitches. 1...Fixed knife, 23...Signal needle, 29...
Base plate, 112... Upper pile warp thread, 113... Lower pile warp thread, B... Tension sudden change point, T... Operation command device for opening switching.

Claims (1)

[Claims] 1. In the part of the pattern where the tension of the pile warp threads of the jacquard machine for towel pattern weaving does not change suddenly, the warp needles supporting the lower pile warp threads are maintained in a continuously lowered position by the main plate, and the warp needles supporting the upper pile warp threads are held by a fixed knife. The pile warp yarn is opened by a full opening method by maintaining it in the continuously raised position by engagement with the warp needle, and only at the point where the tension of the pile warp yarn suddenly changes, through the movement of the signal needle according to the command of the jacquard pattern paper. and raise the base plate, and
The fixed knife is suddenly moved to a position where it does not engage with the pile warp needle, and each pile warp yarn is gathered at a resting position according to the center opening method, and then the pile warp threads are brought into an open state after a sudden change in tension. A method for opening pile warp threads in a jacquard machine for towel pattern weaving.