JPH02191741A - Apparatus for picking of three-dimensional loom - Google Patents

Abstract

PURPOSE:To surely insert a weft yarn into a cloth fell position by providing a weft yarn inserting tool with reed beating function and simultaneously performing weft yarn inserting and reed beating operation. CONSTITUTION:A rapier 15 as nearly an L-shaped weft yarn inserting tool is rotatably supported at the base end thereof on a supporting shaft 14 of a weft yarn inserting device 9 arranged on the lateral side of a group of warp yarns (z) to insert a weft yarn (x) in a folded back form in a warp yarn shed for each picking. The pressing surface 20 of the rapier 15 is placed in a state parallel with the cloth fell line at the cloth fell position and moved to a position for inserting the weft yarn in a state of producing a pressure to the cloth fell side by action of an air cylinder 16.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field 1 The present invention is a method of applying a first weft y and a second weft This invention relates to a weft insertion device for a three-dimensional m-machine that weaves in a state perpendicular to 2.

[Prior art] A large number of warp threads Z, consisting of three types of threads: a first M thread y and a second weft X, which are woven perpendicularly to the warp threads 2 between the rows and rows of the warp Z groups. La-dimensional textiles and resin or! ! Composite materials with aircraft are expected to have a wide range of uses as structural materials for rockets, aircraft, automobiles, ships, and buildings. In order to increase the strength of this three-dimensional fiber,
, Y, and Z directions, it is necessary that the 3N yarns are woven in a state in which they are perpendicular to each other. In order to weave three types of yarns that intersect each other at high density, it is possible to beat the weft yarns in the same manner as in the weaving of ordinary flat 1A fabrics.

Conventionally, as shown in FIG. 8, in Japanese Patent Publication No. 51-14624, a large number of warp yarns GW are arranged in multiple layers, and one set of opening rods 51 is provided for each layer so that they can be opened sequentially. One weft W is sequentially inserted back and forth into the opening of the GW using a shuttle (1 not shown) to open the warp GW of all layers [1
With the weft W inserted inside rB, beat the weft W with the binding thread 13W and the warp G at the weaving front position.
A method for weaving a three-dimensional fabric by arranging it orthogonally to W is disclosed.

Furthermore, as shown in FIG. 9, Japanese Patent Application Laid-Open No. 61-296143 discloses that the warp threads T arranged in multiple layers are sequentially opened one layer at a time with a horizontal bar 53 so that the warp threads IfI[,] One continuous weft W is sequentially inserted back and forth between each warp [
Each time the weft W is compressed into the weft, a reed beating (weft beating) bar 54 is inserted into the warp opening, and this reeding bar 511 is driven against the fabric to perform reed beating, and the weft insertion and weft of the entire layer are performed. After the beating is completed, the tightening moves the bar 55 toward the light side and moves the binding yarn S to the opposite side, and then, as shown in FIG. A method for weaving a three-dimensional fabric is disclosed in which the steps 1 and 2 are repeated and the binding yarn S is tightened.

[Problem to be solved by the invention] However, in the former method, the weft W is added to the layer between each warp
2 is inserted and the binding yarn BW is stretched diagonally, the weft W is simultaneously reeded (-1), so the resistance is large and the reed 52
There is a problem that the reed is curved and cannot be reeded sufficiently.

On the other hand, in the latter method, each time the weft W is inserted into the warp shedding, beating is performed with the beating bar 54. [Each operation of sampling from 1 is required, and the number of operations is large, which not only makes it difficult to increase the speed but also complicates the device. In addition, since the weft W is inserted using a spool, the weft W must be inserted at a position with a wider warp opening interval than the weaving line. When the weft W is transferred to the reed and tied, the weft W may deviate from the beating bar 54 or the weft W formed by bundling a large number of fibers.
In the case of , the weft W cannot be scraped or beaten sufficiently,
Moreover, there was a problem that there was a possibility that the weft thread W might become loose.

The present invention has been made in view of the problem described in No. 011, and its purpose is to provide a weft insertion tool with a reed beating function, and to perform the weft insertion operation and the reed beating operation at the same time, thereby creating a three-dimensional fabric. To provide a weft insertion device for a three-dimensional loom that can reliably insert a weft into a position in front of Ia during weaving.

[Measures Pl for Solving the Problem] In order to achieve the above-mentioned object 1.1, in the present invention, a large number of warp yarns Z are stretched in multiple columns and multiple rows, and a first weft yarn is inserted between the rows and rows of two groups of weft yarns. In a three-dimensional textile machine that weaves y and second wefts X perpendicular to the warp l, there are a weft insertion position where the weft supplied from the weft supply unit is inserted into the warp 7 group, and a standby position where the weft is evacuated from the warp zn. When placed at the weft insertion position, the pressing surface extending parallel to the front position is formed to be longer than the width of the row of the second group of warp yarns, and when placed at the weft insertion position, the three-dimensional fabric is formed. A weft insertion tool having a thread threading mechanism for guiding the weft threads connected from the weft supply section to the fabric front side of the pressing surface, and moving the weft insertion tool 1L between a weft insertion position and a standby position, and moving the weft thread insertion tool to the weft insertion position. When the press 11. In contrast, a moving means for moving in a direction that generates a pressing force toward the woven fabric side is provided.

[Function] The device of the present invention is used to insert the second weft X between the warp threads z 11, and the weft inserter, unlike a spool or a spool, does not have the weft thread tied to the weft inserter itself. Instead, the weft supplied from the weft supply section is inserted into the warp opening in a folded manner for each weft insertion. When the L1 yarn insertion 1t is moved from the standby position outside the warp center to the weft insertion position within the warp space [1], the pressing surface of the weft insertion tool is placed in the front position parallel to the front line. At this time, the threads connected from the R-dimensional m object to the weft supply section are guided to the weaving front side of the pressing surface, and the weft inserter is woven by the action of one stage of movement f) 71
The yarn is moved to the weft insertion position while generating a pressing force on flllll, and the yarn guided to the front side of the pressing surface is pressed to the front (17,'fl) by the pressing surface, and weft insertion and beating are performed simultaneously. It will be done.

Example J In the following, the present invention will be described in which a second weft is inserted in a folded manner with a loop formed at the tip at the tip between the warp threads [1] formed one layer at a time between the rows of two groups of warp threads stretched in multiple layers. At the same time, an embodiment in which the first weft y is inserted between the rows of the warp z f17 using a belt into a 1L weft insertion device for the second weft x 11 of the three-dimensional giai is described in 1 to 1). This will be explained according to the diagram.

As shown in FIG. A plurality of warp threads are fixed to the warp support plate 3, which is moved from a position close to the warp support plate 3 (to the left in Fig. 1) by a drive mechanism (not shown) in the direction (to the left in Fig. +3 for columns and multiple rows! It is set up. There is a warp shedding device between the front frame 2 and the warp supply section 1! f4 is arranged, and the warp threads I are passed through separate belts 5 for each row, so that they can be opened one layer at a time as the belts 5 move up and down. Also, between the weaving frame 2 and the thread opening device 4, the first weft yarn y, which is reeled from the first weft supply section 6, is inserted into each row of the second group of warp yarns by lowering the first weft yarn y7. A belt 7 is disposed without the operation X), and a guide bar 8 is disposed between the first weft supply section 6 and the belt 7 above the warp spacing 11 ff = 1 in the 'Y row with the belt 7. ing.

The weft insertion device 9 for inserting the second L'l yarn
As shown in Figure 6, it is arranged on the ll1IJ side of the warp I edition. A support bracket 10 fixed to the frame of the three-dimensional textile machine has an elbow rod 11 fixed in a vertically extending state, and supported with respect to the guide rod 11. The body 12 is supported by a sliding shaft.A screw shaft 13 forming the side of the ball screw FR is rotatably mounted on the support bracket 10 parallel to both guides 17 and the shaft 11 via a bear link (not shown). A forward/reverse motor 11 (one-turn drive motor M) for driving the screw shaft 13 is fixed to the lower end of the support bracket 10. A nut portion (not shown) next to the ball screw 1 is fixed to the support 12. ), and the support body 12 is moved up and down as the screw shaft 13 rotates forward and backward.

The support shaft 14 protruding from the ]-plane of the support 12 has an approximately L angle.
A rapier 15 serving as a weft insertion device having a character shape is rotatably supported at its base end. Further, on the upper surface of the support body 12, an air cylinder 16 constituting a moving means is installed.
1: It is rotatably supported by the shaft 17 at FA'+, and the tip of the piston rod 16a is connected to the bottle 18.
The weft is rotatably connected to the rapier 15 via the air cylinder 1G, and when the air cylinder 1G is actuated, the via 15 inserts the second weft supplied from the second weft supply section 1 into the warp 7 group. It is arranged to move between the insertion position: V and a standby position where it is retracted from within the 7 groups of warp threads. When the rapier 15 is placed at the weft insertion position, the press-down surface 20 extending parallel to the front position is formed longer than the width of the row of the second group of warp yarns, and the tip has a push-down surface 20 that extends parallel to the weft insertion position. Three-dimensional fabric 1
? A yarn that guides the second weft X that continues from the 21st/a yarn supply section 19 to the fabric facing side of the pressing surface 20! ! 21 is formed. The numbers of the warp threads Z and the first weft threads y can be changed as appropriate depending on the weaving conditions.
The number of L2 threads y may be different from those in Figures 2 to 6.1
It is shown.

Next, we will explain the operation of the system 6 constructed as in 1ljj.

Now, in FIG. 2, the weft insertion device 9 repeatedly inserts the second weft X at each row spacing l\ from the bottom of the warp zWY. This shows a state in which the second weft X is being inserted in the most part of the space between the lines, and FIG. 3 is a 3P-plane view thereof. In addition, in flat jlrrlA, weaving frame 2 and 1 weaving 111
The first weft y behind frame 2 is omitted. In this state, of the belts 5 of the warp shedding device 4, only the belt 5 closest to the front frame 2 is placed in the raised position, and a warp gap [1] is formed at the upper leg l.

As shown by the chain line in FIG. 3, when the screw 17 thread 16a is in the retracted state, the rapier '15 is retracted from the warp thread group 7 and placed in standby (ny!1), and the air cylinder 1
When the piston 1 tip 16a protrudes due to the operation of step 6, the rapier 15 is rotated counterclockwise in FIG. 3 about the spindle 14, enters the warp opening, and reaches the weft insertion position shown by the solid line in FIG. Moved and placed. The 2nd a yarn
At first, as the rapier 15 rotates from the waiting position to the weft insertion position, the thread threading 21 is moved from the weaving area of the three-dimensional fabric F.
The rapier 15 is connected between the warp [
As it penetrates into 1, the slack is removed and rapier 1
Immediately after it is parallel to the pressing surface 20 of No. 5 and placed at the front position, it is pushed to the front position by the pressing surface 20 (beating).
At this time, the beating action for the first weft y inserted earlier between each row of the warp Z is simultaneously performed, and the first weft y becomes perpendicular to the warp Z. rapier 15
The selvage thread P is inserted into the tip end loop of the second weft X by a selvage thread insertion device (not shown) while the second weft X is placed at the weft insertion position. The piston rod 16a is retracted by the operation of the air cylinder 16, and the rapier 15 is rotated clockwise and moved to the standby position, so that the second weft X is folded into a folded shape as shown in FIG. is inserted into the warp opening. At this time, since the threading 21 of the rapier 15 is placed slightly forward of the extension line of the fabric front line, the second weft x
4i Be sure to insert it in a folded manner parallel to the fabric line.

Next, the motor M is driven to rotate in the normal direction, the screw shaft 13 is rotated in the normal direction by a predetermined amount, and the rapier 15 is moved upward along with the support 12 by one pitch of the warp threads 2. Then, the belt 5, which had been placed in the raised position, is placed in the lowered position, and the rapier 15 is moved to the weft insertion position by the operation of the air cylinder 16 in the same manner as described above, and the tip of the 2111th yarn insertion After the insertion of the selvage yarn P into the loop is completed, the rapier 15 is moved to the standby position by the operation of the air cylinder 16, thereby completing weft insertion of the second #B yarn X for all layers. As shown in , the belt 7 is moved downward, and the first weft y
is bent downward and weft is inserted between each row of seven groups of warp threads at once, resulting in the state shown in FIG.

Next, the belt 5 on the woven front side is placed in the raised position again.
As the warp space [1] is formed, the motor M is driven in reverse and the rapier 15 is moved downward to the position corresponding to the warp space [1] in the uppermost stage, and then inside the warp shedding in the same manner as described above. Weft insertion of the second ladle yarn X is carried out. Thereafter, each time the weft insertion for each row is completed, the belt 5 of the device 4 is placed at the I position in order from the front side to the warp space.
When 1 is moved downward one step at a time, the motor M is driven in the reverse direction and the CL via 15 is moved downward to the position corresponding to 1 between the warp yarns, and the air cylinder 16 is activated to move the second weft yarn. Weft insertion of X is performed. Belt 7 for first weft y
Since the belt has slipped from the 11γ position of the belt 7,
In the descending movement 11, the 1st u yarn y is diagonal to the warp Z, but when the rapier 15 hooks the rod 2 weft
``The first spinning force 111n is intersected with the yarn Z: 1. When the insertion of the second weft X into the female lower layer is completed, the belt 7 is moved up to ), and after the first weft y is bent upward, the belt 5 of device 1 is moved to the side opposite to the woven fabric and placed at the wound position, and the warp openings are opened one by one. J:, moved to tr), the motor M is driven in normal rotation, the rapier 15 is moved ten strokes to a position corresponding to the warp gap [], and the second
Weft insertion of the weft yarn X is performed in the same manner.

Note that the present invention is not limited to the above embodiments,
For example, the second. ! Thread (j!: A slack absorbing device [σ is provided between the feeding section 10 and the rapier 15') (the second weft X that connects from the three-dimensional sushi dish 1. Instead of holding the rapier in a straight line, rotate the rapier 5 and move it between the weft insertion position and the waiting position. The warp threads may be inserted between the rows of the groups in a state perpendicular to the first group of warp threads and moved toward the weaving front position, or-
When weaving a three-dimensional fabric with low density, instead of inserting the second weft X into the face one row at a time, rapiers are scattered in the number of rows (the second weft X is inserted between the rows of the warp zTl). The weft X may be inserted.Furthermore, as shown in FIG. 7, S number of reed feathers 22a are provided above the two groups of warp yarns and can enter between each row, and a drive mechanism (not shown) is provided. A driven reed 22 may be provided to perform beating by hand. In this case, it is possible to cope with higher density of three-dimensional textiles.

[Effect of the invention] As detailed above, according to the present invention, when inserting the weft, m
The weft is inserted securely at the +171 position with no slack, and the inserted weft is beaten by the weft inserter, so when weaving three-dimensional meI, the number of weft insertion operations can be reduced and speed can be increased. In addition to this, it becomes possible to simplify the structure of the three-dimensional machine without the need to install a reed. Furthermore, since the sewing thread is supplied from the weft supply section, a large amount of weft thread can be continuously supplied, unlike conventional devices that use shuttles or spools.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing the relationship between the weft thread insertion device and the warp threads zn.
2 and 5 are schematic side views showing the weaving state of the three-dimensional fabric, FIG. 3.4.6 is a schematic plan view, and FIG. 7 is a partial IR perspective view of a modified example. The figure is a schematic side view showing the weaving state of a conventional three-dimensional fabric, and FIGS. 9 and 10 are schematic side views showing the weaving state of another conventional three-dimensional loom. Weft insertion device ff1. A rapier 15 as a weft insertion shell, an air cylinder 16 as a moving means, and a second weft supply section 19
, pressing surface 20, yarn; n 21 , first weft y, second weft X, warp Z, three-dimensional mThF. Patent applicant Flff1 Automatic Loom Manufacturing Co., Ltd. Representative Patent attorney On 1) F8 Sen

Claims (1)

[Claims] 1. The first weft (y) and the second weft (
In a three-dimensional loom that weaves each of The press surface is provided so as to be movable between the standby position and the weft insertion position. a weft inserter equipped with a weft threader that guides the weft threads from the three-dimensional fabric to the weft side of the pressing surface; moving the weft inserter between a weft insertion position and a standby position; A weft insertion device for a three-dimensional loom, comprising a moving means for moving the pressing surface in a direction that generates a pressing force toward the cloth facing side when moving to a position.