JP2718965B2 - Loom beating position control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a beating position control device for a loom.

2. Description of the Related Art In a reed driving device for a pile loom, a beating is performed according to a so-called terry motion weaving pattern in which a pile beating to form a pile and other blind beating are combined. Therefore, as shown in, for example, Japanese Patent Application Laid-Open No. 56-49056, the advance limit position of the reed (the beating position) can be changed between pile beating and blind beating. However, looking at the position of the blind beating, the pile length (pile height 2)
Times) is uniquely determined.

Problems to be Solved by the Invention When weaving a pile weaving unit and a border weaving unit continuously with a loom using a reed driving device in which the blind beating position is uniquely determined, the border weaving unit performs every weaving cycle. Since the warp is switched up and down, the density of the weft increases, and as a result, the weave is before the weaving than the normal position (the heald side).
Stop by. For this reason, even when the blind beating position is normal in the initial stage of the transition from the border weaving unit to the pile weaving unit, the distance between the blind beating position and the position before weaving is inevitably shorter than normal. As a result, it has been pointed out that the initial pile length transferred from the border weaving section to the pile weaving section becomes short and the pile height becomes uneven.

Means for Solving the Problems A pattern signal generator, a beating position moving device for changing the distance between the beating position and the weave, and a first blind beating position setting for outputting a first blind beating position setting signal The beating position is set relatively to the back side of the first blind beating position in the first blind beating position setting unit according to the movement amount of the first blind beating position setting unit in accordance with the movement amount to the back side before weaving. A second blind beating position setting unit for outputting a second blind beating position setting signal; a pattern signal from the pattern signal generating unit; a first blind beating position setting signal from the first blind beating position setting unit; Receiving the second blind beating position setting signal from the two-blind beating position setting unit, the reed is not weaved between the pile beating in the pile weaving unit and the beating in the border weaving unit. The second beating position setting signal is used for the blind beating when the weaving pattern is changed from the border weaving unit to the pile weaving unit. A control function section for selectively outputting a blind beating position setting signal to the beating position moving device.

The beating position when the weaving pattern is changed from the border weaving unit to the pile weaving unit is shifted rearward from the normal first blind beating position according to the amount of movement to the back side before weaving before weaving. The drive is controlled so as to be the second blind beating position, and the distance between the second blind beating position and the weave is made substantially the same as the distance between the first blind beating position and the weave.

Embodiment As shown in FIG. 1, a beating position control device for a loom of this embodiment roughly includes a pattern signal generator 1, a beating position moving device 2, and a first blind beating position setting unit 3. And second blind beating position setting section 4 and control function section 5
And

Pattern signal generating unit 1 Yes previously programmed weave pattern corresponding to the pile weaving portion and a border made Oribe Metropolitan required fabric 17 to be woven, and outputs a pattern signal Q ₁ according to the program . Beating position moving unit 2 has been made to change the distance between the front P ₁ weave assembled to reed driving device 6 and the beating position, the motor 21 as an actuator for driving the crank 20 as a working member And a control unit 22 for this.
A power transmission mechanism 63 for connecting a drive source 60 such as a cam or a crankshaft of a reed driving device 6 and a threshold 62 fixed to a rotatably supported threshold shaft 61 is connected to the eccentric shaft portion 20a of the crank 20. Have been. Specifically, the power transmission mechanism 63 is a connecting rod 64 connected to the drive source 60.
A first link plate 66 having one end connected to an arm 65 protruding from the threshold 62; a substantially rectangular second link plate 67 connected to the other end of the first link plate 66 and the free end of the connecting rod 64; The vertex of the second link plate 67 is rotatably fitted to the eccentric shaft 20a. A fan-shaped driven gear 23 as a worm wheel is fixed to the center shaft portion 20b of the crank 20, and a drive gear 24 as a worm gear meshing with the driven gear 23 is fixed to an output shaft 21a of the motor 21. A reed holder 7 is fixed to the upper free end of the threshold 62, and a reed 8 is attached to the reed holder 7.

The first blind beating position setting unit 3 and outputs a first blind beating position setting signal Q _3. The first blind beating position is a normal blind beating position A shown by a dashed line in FIG.

Movement amount to the rear second blind beating position setting unit 4 weave fabric prior P ₁ beating position in response to (the first distance P ₁ and point P ₂ before weave shown in FIG.) L is first and outputs a second blind beating position setting signal Q ₄ is set rearward weave relatively than the first blind beating position a of the blind beating position setting unit 3. The second blind beating position is blind beating position B shown by a dotted line in FIG. 1, the moving amount of the rear P ₂ weave distance L (woven in the previous P ₁ rearward woven from the first blind beating position A and L ₁ the same) away.

The control function unit 5 executes a pattern signal Q ₁ from the pattern signal generation unit 1, a first blind beating position setting signal Q ₃ from the first blind beating position setting unit 3, and a second blind reed by a preset program. Hitting position setting part 4
Receiving a second blind beating position setting signal Q ₄ from, beating to beating before P ₁ reed 8 is woven in a beating operation of the pile beating time and a border weaving of pile weaving section A position setting signal (applied, simply referred to as a pre-weave beating position setting signal) Q _5-1 is a second blind beating position setting signal at the time of blind beating when the weaving pattern is changed from the border weaving unit to the pile weaving unit. the Q _4, at the time of other blind beating and outputs a first blind beating position setting signal Q _3, selectively to the control unit 22 of the beating position moving unit 2.

In FIG. 1, 9 is a yarn beam, 10 is a back roller, 11 is a heald, 12 is a breast beam, 13 is a surface roller, 14 is a press roller, 15 is a guide roller, 16 is a cross beam, and 17 is a woven fabric. Reference numerals 25, 26 denote stoppers for regulating the maximum rotation range of the driven gear 23.

According to the structure of the above embodiment, the weaving operation of the loom
Control function unit 3 has received the pattern signal to Q ₁ from the pattern signal generator 1, the woven fabric 17 and pile weaving portion and a border weaving portion are woven successively while repeated, breast beam 12, surface In the case of being wound around the cross beam 16 via the roller 13, the press roller 14, and the guide roller 15, this will be described by dividing it into (1) a pile weaving unit and (2) a border weaving unit.

(1) Pile weaving section (an example of a so-called Delhi motion beating motion in which two blind beatings and one pile beating are combined) First weaving cycle (blind beating) Reed 8 In the beating movement of the second link plate 67, the rotating movement of the crank as the drive source 60 is performed by the connecting rod 64.
To the oscillating motion around the eccentric shaft portion 20a,
The light is transmitted by the link plate 66 and converted into a swinging motion of the threshold 62. Accordingly since the first blind beating position setting eccentric shaft portion 20a is rotated driven gear 23 in the arrow Y direction while outputting a signal Q ₃ is in the position of FIG. 1, retracted limit position of the reed 8 This is the position indicated by the solid line, and the forward position is the position A indicated by the dashed line. This reed 8
1, the reed 8 is located near the retreat limit position as shown by the solid line in FIG. 1, and the weft insertion time when the warp shedding becomes almost maximum is reached. It is weft-inserted into the warp shedding between ₁ . The inserted weft yarn W is beaten to the position A by the forward movement of the reed 8.
Next, the reed 8 is swung toward the retreat limit position. During the retreat of the reed 8, the upper and lower warps Y intersect, but the pile yarn P does not intersect.

Second weaving cycle (blind beating) When the weft W is inserted, the reed 8
After being beaten to the blind beating position A, it returns to the retreat limit position. In this weaving cycle, the upper and lower warps Y do not intersect, and only the pile yarn P intersects up and down.

Third weaving cycle (pile beating) When the weft thread W is inserted, the control function unit 5 outputs a pre-weaving approach beating position setting signal _Q5-1 to the control unit 22, and the beating position moving device. The deflection angle, ie, the position of the eccentric shaft portion 20a with respect to the retreat limit position indicated by the solid line of the threshold shaft 61 centered on the drive shaft 61 driven by the second drive is rotated in the direction of the arrow X, and the position of the eccentric shaft portion 20a is change. This retraction limit position of the reed 8 is also advanced limit position A indicated by a solid line position of Figure 1 is advanced to the beating position C close to the previous P ₁ weave as shown in phantom in FIG. 1, the pile A pile is formed by the yarn P. Thereafter, in the course of the reed 8 is moved to the retracted limit position indicated by the solid line, the control function unit 5 outputs the first blind position setting signal Q ₃ to the control unit 22, a crank 20 driven by the beating position moving unit 2 Pivots in the direction of arrow Y and stops at a predetermined position, so that the reed 8 retreats to the retreat limit position indicated by the solid line, and then swings between this position and the A position. During the retreat of the reed 8, the upper and lower warp yarns Y and the pile yarns P intersect.

In the pile weaving section, the above-described weaving cycle is repeated.

(2) Border weaving unit When the weft yarn W is inserted in each weaving cycle, the control function unit 5 outputs a weaving beating position setting signal Q _5-1 to the control unit 22 and rotates the driven gear 23 by a predetermined angle. By moving the reed 8, the reed 8 swings between the position near the solid line and the position C.

Here, in the border weaving section, the warp Y
A pile yarn P is replaced by the top and bottom, by the weft density is increased, the cloth fell P ₁ is a position P ₂ of the rear side woven according to the weaving length of border weaving section with. Therefore, when the weaving pattern is changed from the border weaving unit to the pile weaving unit,
After weft insertion in the first weaving cycle of pile weaving section, the control function unit 5 outputs the second blind beating position setting signal Q ₄ to the control unit 22. Then, the motor 21 is driven to rotate, the crank 20 is rotated, and the eccentric shaft portion 20a is displaced by a predetermined amount from the position shown in FIG.
The first blind reed from P ₁ before deflection angle relative to the retracted limit position indicated by the solid line in Suresodo 62 around the thread Sword shaft 61 in accordance with the amount of displacement woven as indicated by the dotted line in Figure 1 the normal Before weaving P ₁
Is moved to a second blind beating position B which is substantially the same distance as the moving amount L of the second blind. Thereafter, the reed 8 is moved to the second position indicated by the dotted line.
In the process of moving from the blind beating position B to the retreat limit position indicated by the solid line, the control function unit 5 sets the retreat position setting signal Q
_5-2 is output to the control unit 22, the motor 21 is driven to rotate in the direction opposite to the above, the eccentric shaft part 20a is displaced by a predetermined amount in the direction of the arrow X, and returns to the position shown in FIG. 8 is the position indicated by the solid line and A
Swing between position. During the retreat of the reed 8, the upper and lower warps Y intersect, but the pile yarns P do not intersect (see the above weaving cycle; however, the weaving cycle assumes that the pile weaving section is continuous). Some differences). After this weaving cycle, the pile weaving section is woven by repeating the above weaving cycle.

Incidentally, in the process of weaving the border weaving section, the amount of movement cloth fell P ₁ is moved to the position P ₂ is those determined from the weaving length and weft density of the border weaving section is heuristically grasped Therefore, the second blind beating position setting unit 4 calculates the moving amount L obtained from the empirical rule based on the weaving length and the weft density of the border weaving unit, and calculates the second blind beating based on the calculation result. The position signal Q ₄ is output to the control function unit 5.

In the above embodiment, an example in which the present invention is applied to a so-called swing lead type beating apparatus has been described. However, the present invention may be applied to a shifting fel type. In other words, the amount of movement of the ground warp at the time of blind beating when changing from the border weaving unit to the pile weaving unit is made larger than that at the time of blind beating of the normal pile weaving unit, and as a result, the distance between the weaving position and the blind beating position What is necessary is just to make it equal to the distance between them at the time of normal blind beating.

Advantageous Effects of the Invention As described above, according to the present invention, the beating position when the weaving pattern is changed to the border weaving unit or the pile weaving unit is changed according to the amount of movement to the back side of the weaving before weaving. Drive control can be performed so as to be a second blind beating position relatively set behind the one blind beating position relative to the weaving side, so that the pile height at the time of the first pile formation is substantially equal to the other pile heights. It is possible to obtain a pile woven part having the same pile height and uniform pile height.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Pattern signal generation part, 2 ... Beating position moving device, 3 ... First blind beating position setting part, 4 ... Second blind beating position setting part, 5 ... Control function part, 6
... Reed driving device, 8... Reed, P ₁ ... Weave before, L... Travel distance, A... 1st blind beating position, B. Beating position, Q
₁ ...... pattern signal, Q ₃ ...... first blind beating position setting signal, Q ₄ ...... second blind beating position setting signal, Q _5-1 ...... cloth fell beating position setting signal, Q _5-2 …… Reverse position setting signal.

Claims (1)

(57) [Claims] A pattern signal generator, a beating position moving device for changing a distance between the beating position and the weaving front, and a first blind beating position setting unit for outputting a first blind beating position setting signal. A second blind in which the beating position is set relatively rearward of the first blind beating position in the first blind beating position setting unit in accordance with the amount of movement to the back side of the weaving before weaving; A second blind beating position setting unit for outputting a beating position setting signal; a pattern signal from the pattern signal generating unit; a first blind beating position setting signal from the first blind beating position setting unit; and a second blind. Receiving the second blind beating position setting signal from the beating position setting section, the reed is beaten before weaving between the pile beating in the pile weaving section and the beating in the border weaving section. The second blind beating position setting signal is used for the blind beating when the weaving pattern is changed from the border weaving unit to the pile weaving unit, and the first blind beating is used for other blind beating. A control function unit for selectively outputting a position setting signal to the beating position moving device, a beating position control device for a loom, comprising: