JPH0473237A - Shedding motion in jacquard machine - Google Patents

Abstract

PURPOSE:To remove the error of lasting-width and reduce the weight of the subject shedding motion by adjusting the upper shedding position or the lower shedding position of respective connecting points at a time of shedding to the height of the shed and inclining it. CONSTITUTION:The lower end of a rod 6 pivoting the other and part 4b of an arm 4 is connected through a shaking plate 7 and a rod 8 to the outer periphery part of a rotary disc and plural knife boxes 43 are arranged in parallel in a frame body 42. The other end part 5b of a subarm 5 is movably pivoted through a rod 10, a shaking plate 11 and a rod 12 to the middle part of the shaking plate 7 and a bottom plate 51 is connected to the upper part of the subarm 5. By rotation of the arm 4 in the direction of I and by rotation of the subarm 5 in the direction of II, the knife box 43 and the bottom plate 51 are vertically moved in an inclined state and the upper and lower shedding positions of the connecting point between the weft yarns and the warp yarns at a time of shedding are inclined in order in accordance with the height of the shed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a red thread shedding device for a shagger machine.

<Prior art> A jacquard loom is fixedly supported at the upper part of a loom, and moves a knife for moving the warp needles up and down in conjunction with the rotation of the loom to select the warp threads connected to these warp needles. Instead of moving the loom up and down, the loom is opened upward or downward, allowing the shedding movement of the loom to occur.

Usually, a large number of knives are fixedly installed in a knife box, and the knife box is moved up and down via a suitable drive mechanism. Further, the vertical needle is used, for example, with its upper end bent into a hook shape, and by hooking a knife to this hook-shaped portion and moving the vertical needle up and down together with the knife, the upper opening is formed.

A neck cord made of synthetic resin is attached to the lower side of the vertical needle so that it can swing freely relative to the vertical needle, and the warp threads are connected to the S tube fixed to the lower end of the neck cord via a thread thread. . That is, the threads and the warp threads are connected through the heddles at the connection point. An arrow is connected to the lower end of the heald to press it downward.

Arrows are used to push the healds downward, and usually a weight is used, or a structure that elastically presses the healds downward using rubber or springs may also be used. Further, the vertical needle is normally supported on a main plate fixed to a loom frame (not shown). Then, by moving this base plate up and down together with the unselected warp yarns, a lower opening is formed.

On the other hand, the mechanism for selectively moving the warp threads up and down is to selectively push the horizontal needles depending on the presence or absence of punched holes formed in the patterned paper, which have punched holes corresponding to the weaving pattern, and move the horizontal needles in conjunction with each horizontal needle. Conventionally, a structure has been used in which the warp threads inserted into the warp threads are selectively pulled up by removing the warp needles from the knife to select the warp needles that will be pulled up together with the knife when the knife rises. Recently, warp threads are selected by electrical signals corresponding to the weaving pattern, for example, warp threads are selected by appropriately energizing a solenoid that drives the corresponding weft needles based on this electrical signal, or based on the above electrical signals. It has been proposed that the warp threads be selected by appropriately energizing a solenoid that directly attracts the corresponding warp needle.

By the way, when using this type of Jacquard machine, 900
Since weaving is carried out by manipulating ~1800 or more warp threads, a very large number of warp needles are engaged with the knife in the knife box, and these many warp needles are connected to one knife. Since the knife cannot be fully engaged in one line, the knife can be
A structure is adopted in which about 20 knives are arranged side by side in a knife box and the above-mentioned large number of vertical needles are distributed and supported among these knives.

Similarly, the heddles that connect the threads and the warp threads and the arrows attached to the lower ends of the warp threads have a certain width, so these and the battens that hold the threads together at the top of the heddles are used to adjust the warp length. A structure is adopted in which a large number of them are arranged in a horizontal direction.

<Invention or Problem to be Solved> However, in the above-mentioned structure in which the healds, that is, the connection points between threads and warp threads are distributed and arranged in the warp length direction, as shown in FIG. The longitudinal width d of the threads attached to the threads and arrows can reach up to 100 to 200 mm, and in conventional equipment, the connection points of the warp threads are placed at the same height (upper opening position, lower opening position), upper opening position, lower opening position, and lower opening position. Since it is a so-called parallel opening that opens downward, there is essentially a useless or extra movement part (the shaded part in the figure) of about 8 to 9 degrees at most, and therefore there is an error in the hanging width. I have a problem with Deruna. In Figure 4, the left side of the opening is the weaving front, from the front to the back is the weaving width, and the left and right direction is the warp length direction, and D is the weaving direction in which the fabric is woven. Nato no Shuttle H passes from the front to the back or in the opposite direction.

In addition, in the conventional opening device, both the upper and lower openings are parallel openings, and the knife box is directly moved up and down, so the force required to move the knife box up and down is large, and the opening weight is large. There is also the problem that it is difficult to move up and down smoothly, and vibrations are large during up and down movement, which may become an obstacle when increasing the speed of the loom.

An object of the present invention is to provide an edge thread shedding device for a Chaggart machine that is free from the above-mentioned problems and is equipped with a novel movement mechanism.

<Means to avoid the problem> The warp selection device for the Chaggart machine of the present invention moves a knife for moving the vertical needles or a fixedly supported knife box up and down in conjunction with the operation of the loom, and threads the vertical needles through the vertical needles. In a jacquard machine, in which warp threads connected via threads are shedding motion, and connection points between the threads and warp threads are sequentially provided in the longitudinal direction of the warp threads, one end is rotatably supported. The knife box further includes an arm whose other end extends in the warp length direction, and an arm rotation mechanism that rotates the other end of the arm up and down in conjunction with the operation of the loom. The gist is that by connecting to the other end of the arm and moving it up and down together with the arm, the upper opening position of the connecting point at the time of opening is sequentially inclined in accordance with the opening height.

When rotating the arm as described above, the arm is usually rotated between a horizontal position and an upper position, but is not limited to this, for example, between a lower position and a horizontal position. It may be rotated up and down, and in short, it is sufficient to rotate it up and down about a fixed axis.

In addition, in this application, even when making a Jacquard machine that can handle large quantities, for example, by arranging three 900 knife boxes to make a 2,700 knife box, or by arranging two 1,800 knife boxes to make a 3,600 knife box, Yongchang Moreover, it can be handled reliably. That is, in this case, if the total weight of these knife boxes cannot be supported by the arms and books, a plurality of arms should be arranged in parallel in the axial direction of the fixed shaft, and one end of each of these arms should be made rotatable for each of the fixed shafts. The two or three knife boxes may be supported between these arms. Alternatively, for example, it is also possible to arrange arms as many as the number of knife boxes in parallel, connect the knife boxes to these arms, and move them up and down together.

In addition, if a conventional parallel-opening type Chaggart machine is used to handle large quantities like this, two or three Chaggart machines that move two or three knife boxes up and down, respectively, are installed in parallel in the weaving width direction. Regardless of the structure or configuration, each Shaggard machine has screws protruding from the end to adjust the opening height, etc., so it is not possible to install multiple Shaggard machines closely together, and for this reason, each Since the spacing between the knife boxes is quite wide, it is necessary to adjust the thread length, and vibrations caused by the loom operation cause each Shaggat machine and the knife box integrated with it to move separately. There are drawbacks. In the case of the present invention, as described above, the arms are arranged in parallel to the fixed shaft and the knife box is firmly attached to the knife box, so this drawback can be eliminated.

On the other hand, in addition to the above configuration, a sub-arm is provided, one end of which is rotatably supported and the other end extends in the warp length direction, and a base plate for opening the bottom is connected to this sub-arm, and the loom is operated. By rotating the other end of the sub-arm toward the bottom stop in conjunction with It is also possible to open the warp threads connected to the warp needles (which are not connected to the vertical needles) via threads, and to sequentially incline the lower opening positions of these connection points in accordance with the opening height.

In this case, if the other end of the sub-arm is connected to the arm drive mechanism through an appropriate rank, the arm rotation mechanism can be rotated to the lower stop, and the arm and sub-arm can be rotated to the lower stop. Although the drive mechanism is preferable because it is simple, it is not limited to this, and it goes without saying that the arm rotation mechanism may be rotated by a mechanism other than the arm rotation mechanism.

<Operation> The other end of the above arm is rotated up and down, and a knife box is connected to the other end of this arm and rotated together, so that the upper opening position of each connection point at the time of opening is adjusted to the opening height. If the structure is such that the warps are tilted according to the shape of the opening (slanted opening), each warp thread can be moved up and down according to the shape of the opening without wasting or unnecessary movement. The same applies to the case of the lower opening, and by inclining the lower opening position of each connection point in accordance with the opening height, each warp can be moved up and down without wasting or unnecessary movement. As a result, there is no error in the recessed width as in the case of conventional parallel apertures.

In addition, the knife box is moved up and down by pivoting one end of the arm that connects the knife box and rotating the other end of the arm up and down, so the knife box moves up and down using the principle of leverage. The force is significantly reduced and the opening weight can be significantly reduced.

<Example> Examples will be described below.

Fig. 1 shows a Jacquard machine equipped with an opening device according to the present invention, in which fixed shafts are installed at the upper and lower parts of a base 1, which is erected sequentially from the front to the back (direction W). 2 and 3 are in communication with each other, and a plurality of arms 4.2 and 3 are connected to this fixed shaft 2.3. and one end 4a 5a of the sub arm 5
Both are rotatably supported. This Jacado loom is mounted on the top of the loom parallel to the loom, that is, in the figure, with the left-right direction or warp length direction facing, and the direction W facing the weaving width.

In a frame 42 connected to the other end portion 4b of the arm 4 via a rod 41, a plurality of knife boxes 43 are placed and supported in parallel in the direction W. Each knife box 43 has a large number of knives arranged side by side. By engaging the required vertical needles with these knives and moving them up and down together with the knives, the neck cords attached to the vertical needles in a manner that allows them to swing freely, the S tube fixed to the lower end of the neck cords, and the threads are connected. The selection operation of the warp thread groups connected to the healds via threads is performed in the same manner as in the prior art. In the figure, reference numeral 44 denotes a central shaft fixed to the end of the frame 42, which is held in a gap 45a provided in a support 45 fixed to the frame F like the base 1, and moves up and down.

Arm 4. The sub arm 5 performs vertical movement as described later by the following power transmission mechanism. That is, in FIG. 1 and FIGS. 2(A) and 2(B), the lower end of the rod 6, on which the other end portion 4b of the arm 4 is movably pivoted, is located at the other end on the right side in the figure. is movably supported on one end of a swing plate 7 that is supported on a fixed shaft. The other end of the rocking plate 7 is pivotally supported on the outer peripheral portion of a rotating disk 9 via a rod 8.

On the other hand, the other end 5b of the sub arm 5 is connected to a swing plate 11 whose center portion of the rod 10° is pivotally supported by a fixed shaft. It is also movably pivotally supported at the center of the swing plate 7 via a rod 12. In Figure 2 (^) and (B), 51 is the vertical needle N1 to N
This is the base plate that supports the lower part of 4. This base plate 51 is connected to the upper part of the sub-arm 5 and rotates together with the sub-arm 5 in the lower stop direction. At the time of warp selection, as will be described later, the vertical needles N2. N4 is knife 43a
(see Fig. 2 (^)), and the vertical needles Nl connected to other unselected warp threads.
, N3 moves downward together with the main plate 51.

Figure 2 (^) shows the operation of the warp shedding device with the above configuration.
, (B).

FIG. 2(A) shows the state when the mouth is closed, and in this state, the arm 4. The secondary arms 5 are parallel. and,
When the timing for shedding the warp threads comes, the power transmission mechanism works to move the arms 4. The auxiliary arms 5 rotate in directions III in the figure, and in conjunction with these rotations, the following warp shedding motion is performed.

Immediately, by rotating the arm 4 in the direction ■, the knife box 43 connected to the arm 4 moves upward, and the vertical needle connected to the selected warp engages the knife 43a, causing the knife box 4 to move upward.
As shown in FIG. 3, threads Tl, T2 . T3...Tn.

and heald S1. N2. Warp threads Yl, Y2. Y3...Yn move upward to form an upper opening. In addition, the remaining warp threads ti, t2. t3...
・tn rotates the heald s by rotating the sub arm 5 in the direction ■.
1. s2. The lower opening is made by moving downward together with s3...sn.

At this time, the upper opening position of each heddle or warp is sequentially inclined in accordance with the height of the opening. In other words, the warp Y1. Y2
．． The upper opening position of Y3... is sequentially increased in accordance with the opening height (along the opening shape). Similarly, the lower opening positions of each heddle or warp thread are sequentially inclined according to the height of the shedding, and the lower opening positions of the warp threads yl, y2+y3...yn are sequentially located from the left open end side to the right warp length direction. is gradually decreasing.

By sequentially changing the upper opening position or the upper and lower opening positions in this way, compared to the parallel opening of the conventional device,
The opening can be made larger at the front (front) of the weaving width, and smaller at the back.

In this state, the shuttle H passes from the front to the back or in the opposite direction at the left side of the opening to insert the weft, and after beating the weft, the arm 4 and sub arm 5 are
It rotates in the direction of ■ and returns to its original state, which causes the warp Y
1. , Y 2 , Y 3 and Yn are below, and the warp Y1 . Y2. Y3...yn move upward, and all the warp threads return to the closed position, completing the weaving for that round.

The above operations are sequentially performed in conjunction with the operation of the loom to weave a predetermined pattern.

<Effects of the Invention> As described above, according to the present invention, since the upper opening position or the lower opening position of each connection point at the time of shedding is made to be inclined in accordance with the opening height, the vertical movement of each warp thread can be controlled. This can be done without unnecessary or extra movements according to the shape of the opening, and as a result, there is no error in the hanging width.

In addition, the force required to move the knife box up and down is greatly reduced, and the opening weight is also significantly reduced, so the up and down movement can be performed smoothly with less vibration, and many other excellent effects are achieved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the edge thread shedding device in an embodiment of the present invention, Figs. 2 (^), , (B) are explanatory diagrams of its operation, and Fig. 3 is a connection point between thread threads and warp threads. FIG. 4 is an explanatory diagram of the opening height of a certain heald. FIG. 4 is an explanatory diagram of the opening height of a heald in a conventional device. ]... Base, 23... Fixed axis, 4... Arm, 5...
...Secondary arm, 43...knife box. Patent Applicant Kuhe Ironworks Co., Ltd. Rijin Omata Ichoo

Claims (1)

[Scope of Claims] 1. A knife box in which a knife for moving the warp needles is fixedly supported is moved up and down in conjunction with the operation of the loom, and the shedding movement of the warp threads connected to the warp needles via threads is controlled. In addition, in a jacquard machine in which the connection points between the threads and the warp are sequentially provided in the warp length direction, one end is rotatably supported and the other end extends in the warp length direction. an arm, and an arm rotation mechanism that rotates the other end of the arm up and down in conjunction with the operation of the loom, and further connects the knife box to the other end of the arm and rotates the knife box up and down together with the arm. A warp shedding device for a jacquard machine, characterized in that by moving, the upper opening position of the connection point at the time of shedding is sequentially inclined in accordance with the shedding height. 2. The warp shedding device according to claim 1, wherein a plurality of the arms are arranged in parallel in the axial length direction of the fixed shaft, and each of the plurality of arms is pivotally supported by the fixed shaft. 3. A base plate for opening the bottom is connected to a sub-arm whose one end is rotatably supported and whose other end extends in the warp length direction, and the other end of the sub-arm is moved in conjunction with the operation of the loom. 3. The warp threads of a jacquard machine according to claim 1 or 2, wherein the lower opening position of the connection point of the warp threads for lower shedding is sequentially inclined in accordance with the shedding height by rotating the warp threads downward and upward. Opening device. 4. The warp shedding device according to claim 3, wherein the sub arm is rotated downward and upward by the arm rotation mechanism.