JP3424367B2 - Shedding control device in loom - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shed control device for a loom.

[0002]

BACKGROUND ART One of the heald frames and the one dedicated drive motor connected in a one-to-one, opening controller Hei 4-22224 No.8 driven separately by a dedicated motor a plurality of heald frames Japanese Patent Laid-Open No. 4-289240 and Japanese Patent Laid-Open No. 4-34240
It is disclosed in Japanese Patent No. 3733 and Japanese Patent Laid-Open No. 6-2244.

[0003] In the apparatus of JP-A 4-22224 8 discloses detects a deviation between the actual rotation amount and the target amount of rotation of the drive motor, and feedforward control of the drive motor based on the detected deviation . By such feedforward control, the response delay of the drive motor is prevented.

In the apparatus disclosed in Japanese Unexamined Patent Publication No. 4-289240, the forward / reverse direction of the drive motor is determined based on the created movement pattern of the heald frame, the upper limit value (upper opening position) and the lower limit value (lower opening position) of the heald frame. Determines the target rotation amount of. The rotation of the drive motor is controlled based on the determined target rotation amount. By such control, the stroke (vertical momentum) of the heddle frame can be adjusted.

In the apparatus disclosed in Japanese Patent Laid-Open No. 4-343733, the target rotation amount of the drive motor is made to follow the stored opening pattern of the heald frame. When the loom is stopped, the rotation amount of the drive motor is determined based on the designation of a specific opening pattern. By such a rotation amount control, the rotation of the loom and the rotation of the drive motor are automatically synchronized.

In the apparatus disclosed in Japanese Patent Laid-Open No. 6-2244, an encoder for detecting the rotation amount of the drive motor stores rewritably its output information, and this output information and the output information of the encoder for detecting the rotation angle of the loom are stored. The rotation of the drive motor is controlled so that By such rotation control, the movement pattern of the heddle frame set can be performed.

In this type of opening control device, a cam plate for swinging a lever for vertically moving the heddle frame is attached to the output shaft of each drive motor, or a driving force is applied to an operating mechanism for vertically moving the heddle frame. An eccentric wheel in which a rocking lever for transmission is rotatably supported is attached to an output shaft of a drive motor. Further, as the drive motor, a high rotation type combined with a speed reduction mechanism is generally used.

Further, in Japanese Patent Laid-Open No. 3-185149,
A device is disclosed in which a rack (not shown) is formed on both outer side surfaces of each heddle frame, and a heddle frame is moved up and down by a servomotor having a pinion that meshes with the rack. 17 and 1
As shown in FIG. 8, each heald frame 51 is supported by a pair of servomotors 53 to which a pinion 52 that meshes with a rack is attached, and is vertically moved by the forward and reverse rotations of the servomotors 53. In order to avoid the interference between the output shaft and the heald frame 51 which is not driven, each servo motor 53 sequentially reduces the width of the heald frame 51 as shown in FIG. 17 or the same width as shown in FIG. It is arranged by shifting in the direction. The positions of the servo motors 53 corresponding to the different heddle frames are vertically shifted.

[0009]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The opening device disclosed in Japanese Patent No. 9 discloses a pinion 52 that engages with a rack formed on a heddle frame 51 and a servo motor 53.
Since it is directly driven by, the structure is simpler than that of an opening device provided with a link mechanism for vertically moving the heddle frame. However, two drive motors are required to drive one heddle frame 51, which significantly increases the cost. Also, the heddle frame 5
The width of 1 becomes wider than the width required for the warp opening,
It becomes heavy and power consumption increases. Further, in the case of the configuration shown in FIG. 17, heald frames 51 having different widths are required, which causes a problem that the number of types of parts increases.

Further, a cam plate and an eccentric wheel as a driving force transmitting member for transmitting a driving force to an actuating mechanism for moving the heddle frame up and down are fixed to the output shafts of the respective independent drive motors. Therefore, when a large number of heddle frames are provided, in order to arrange the drive motors so that they do not interfere with each other,
A large space was required, and it was difficult to increase the number of heddle frames. Further, since the output shafts of a large number of drive motors cannot be arranged on the same axis, even if the cam plates and the eccentric wheels have the same shape and the drive motors are controlled in the same manner, it is not always possible to cause the heddle frame to make the same vertical movement. Can not.
Therefore, the control of the drive motor becomes complicated.

Further, in any of the above-mentioned conventional apparatuses, substantially the upper limit value (upper opening position) and the lower limit value (lower opening position) of the heald frame are substantially the same as those disclosed in Japanese Patent Laid-Open No. 4-289240.
Must be specified. If a large number of heddle frames are used, the number of upper opening positions and lower opening positions of the heddle frame becomes large, and the work of changing the stroke amount of the heddle frame, that is, the maximum opening amount of the heddle frame becomes troublesome.

Further, the driving force of a dedicated drive motor for driving the heald frame is transmitted to the heald frame through a driving force transmission system such as a gear mechanism and a crank mechanism. Since there is backlash on such a driving force transmission system, exact coincidence between the rotational position of the drive motor and the actual height position of the heddle frame cannot be guaranteed.

The present invention has been made in view of the above problems. A first object of the present invention is to make it possible to efficiently use a space for disposing a drive motor and to increase the size of the loom as a whole. An object of the present invention is to provide an opening control device for a loom that can increase the number of heddle frames without inviting.

A second object is to further provide an opening control device for a loom which can easily set the maximum opening amount of the heddle frame and easily set the limit opening positions such as the upper opening position and the lower opening position. To provide.

[0015]

In order to achieve the first object, according to the invention described in claim 1, one heald frame and one drive motor are connected in a one-to-one manner, and a plurality of heald frames are connected. Is a shed control device in a loom that drives each separately by a dedicated drive motor, and an operating mechanism provided corresponding to each heald frame to move the heddle frame up and down, and along the arrangement direction of the heddle frames. a support shaft disposed so as to extend, the said support shaft at positions corresponding to the respective heald frames are rotatably supported on the support shaft as the pivot center Rutotomoni shaft support to its eccentric position is formed
And the driven gear that is rotatably supported by the shaft support.
And an oscillating member both connected to the actuating mechanism.
A driving force transmitting means for transmitting a driving force to the actuating mechanism,
The driven gear is provided with a drive gear for driving the driven gear.
And a controllable means for controlling the drive motor.

In the invention according to claim 2, one heald frame
And one drive motor are connected in a one-to-one manner, and multiple healds
For looms that individually drive the frames with their own drive motors
Opening control device for moving the heddle frame up and down
The operating mechanism provided for each heald frame and the heald frame
A support shaft arranged so as to extend along the arrangement direction, and
At the position corresponding to each heddle frame
It is rotatably supported by the spindle and the cam is formed integrally.
Driven gear that transmits the driving force to the operating mechanism.
Driving force transmitting means and the actuating mechanism correspond to the cam.
Drive gear for driving the driven gear with a cam lever
And is arranged along the circumferential direction of the driven gear.
A variable speed drive motor and a control for controlling the drive motor.
It is equipped with means .

In the invention according to claim 3, one heald frame
And one drive motor are connected in a one-to-one manner, and multiple healds
For looms that individually drive the frames with their own drive motors
Opening control device for moving the heddle frame up and down
The operating mechanism provided for each heald frame and the heald frame
A support shaft arranged so as to extend along the arrangement direction, and
At the position corresponding to each heddle frame
It is rotatably supported by the supporting shaft and connected to the operating mechanism.
It is a driven gear that is connected and transmits the driving force to the operating mechanism.
Drive force transmitting means and drive teeth for driving the driven gear
It is equipped with a vehicle and is arranged along the circumferential direction of the driven gear.
Variable speed drive motor configured to rotate forward and backward
And a control means for controlling the drive motor .

[0018]

According to a fourth aspect of the invention, in the third aspect of the invention, a sector gear is used as the driven gear. In the invention described in claim 5 , claims 1 to
In the invention according to any one of 4 above, a worm wheel is provided as the driven gear, and the output shaft of the drive motor is provided with a worm that meshes with the worm wheel as a drive gear and is flush with a corresponding heald frame. Above it is arranged along the circumferential direction of the driven gear .

Further, in order to achieve the second object, claim 6
In the invention according to claim 1, in the invention according to any one of claims 1 to 5 , a height for detecting a height position including a lower opening position or an upper opening position of the heddle frame including upper and lower limit opening positions. The position detecting means, one of the limit opening positions serving as a reference for one of the lower opening position and the upper opening position of the heddle frame, and the heddle frame.
A reference value storage means for storing a reference value, which is a reference warp opening angle that serves as a reference for one of the lower shed position and the upper shed position, and a loom rotation angle detection means for detecting the rotation angle of the loom. The loom rotation angle information obtained from the loom rotation angle detection means, other limit opening positions are calculated based on the reference opening position and the reference warp opening angle, and the heddle frame of the heald frame detected by the height position detection means is calculated. A shift control means is provided to shift control the rotational speed of the drive motor based on the height position and the limit opening position.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, there is provided a reference opening position correction means for correcting and changing the reference limit opening position stored in the reference value storage means.

[0022]

In the invention described in claims 1 to 7 , the plurality of heald frames are moved up and down by the operating mechanism. When the drive motor dedicated to each heald frame is operated and the drive gear is rotated, the corresponding driven gear supported by the common support shaft is rotated and the drive force is transmitted to each operation mechanism through the drive force transmission means. To be done. Each actuating mechanism has the same distance from the support shaft, and each heald frame moves up and down so as to have the same movement amount with respect to the same rotation amount of each drive motor. Also, the drive motor is activated
When the drive gear is rotated, the driven gear rotates around the spindle.
At the same time, the shaft support rotates eccentrically. And the swing member
It is rocked and the driving force is transmitted to each operating mechanism. Other
The operation is the same as that of the invention described in claim 1.

[0023]

According to the second aspect of the present invention, when the drive motor is actuated to rotate the drive gear, the driven gear rotates integrally with the cam around the support shaft. Then, the driving force is transmitted via the cam lever of the operating mechanism .

In the invention described in claims 3 and 4 ,
The drive motor is operated in the forward and reverse directions, and the driven gear is reciprocally rotated via the drive gear. The driving force is transmitted to the operating mechanism by the reciprocating rotation of the driven gear .

According to the fifth aspect of the invention, when the drive motor is actuated to drive the worm, the worm wheel rotates about the support shaft. And claim 1 to claim 4
The worm wheel plays the role of the driven gear in the invention described in 1. Other operations are the same as those of the structure described in claims 1 to 4.

According to a sixth aspect of the present invention, in the first to fifth aspects of the invention, the gear shift control means sets all healds based on the reference limit opening position and the stored reference warp thread opening angle. The other upper opening position and lower opening position of the frame are calculated. Then, the shift control means controls the rotation of the shift drive motor so that the difference between the height position detected by the height position detection means and the limit opening position becomes zero.

According to the invention described in claim 7 , in the invention described in claim 6 , the reference opening position is corrected by the reference opening position correcting means in response to a change of the weft type.

[0029]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. Swing levers 3A and 3B are rotatably supported inside the left and right side frames 1 and 2 of the loom. The swing of the swing lever 3A is transmitted to the swing lever 3B via the transmission rod 4, and both swing levers 3A and 3B swing synchronously. Connecting rods 5A and 5B are vertically attached to the swing levers 3A and 3B. Multiple heald frames S ₁ ,
S ₂ , S ₃ , S ₄ , and S ₅ (5 sheets in this embodiment as shown in FIGS. 2 and 3) are supported by a pair of connective rods 5A and 5B, respectively. Swing lever 3
The swing of A and 3B is converted into vertical movement of the heald frame Sn (n = 1 to 5) via the connecting rods 5A and 5B.
The vertical movement of the heddle frame Sn is guided by the U-shaped guides 6A and 6B.

A window 1a is formed in the first side frame 1, and a support shaft 7 is arranged in the window 1a so as to extend along the arrangement direction of the heald frames Sn (the direction perpendicular to the plane of FIG. 1). A jack lever 8 is rotatably supported on the support shaft 7 at a position corresponding to each heald frame Sn. Each jack lever 8 is connected to the swing lever 3A via a connecting rod 9. The swing levers 3A and 3B, the transmission rod 4, the connecting rods 5A and 5B, the jack lever 8 and the connecting rod 9 constitute a link mechanism as an operating mechanism.

A support shaft 10 is arranged in the window 1a in parallel with the support shaft 7. The support shaft 10 has a large number of gears 11G ₁ , 11G ₂ , 11 as driven gears, the number of which is the same as that of the heald frame Sn.
G ₃ , 11G ₄ and 11G ₅ are rotatably supported. Each gear 11Gn (n = 1 to 5) is provided with a shaft support portion 12 at an eccentric position, and a swing lever 13 as a swing member is rotatably supported on each shaft support portion 12. Each gear 11
The outer diameter of Gn is formed larger than the outer diameter of the swing lever 13. As shown in FIG. 3, the thickness of each support portion 12 is formed slightly smaller than the thickness of the rocking lever 13, and each gear 11
The thickness of Gn including the shaft supporting portion 12 is formed to be substantially equal to the arrangement pitch of the heald frames. The swing lever 13 is rotatably connected to the jack lever 8. Each gear 11Gn and the rocking lever 13 constitute a power transmission means for transmitting a driving force to each operating mechanism.

As shown in FIG. 3, servomotors M ₁ , M ₂ , M ₃ , M ₄ and M ₅ (only a part of which are shown) as variable speed drive motors are provided on the front surface of the first side frame 1. It is fixed. The servo motors Mn (n = 1 to 5) are arranged at equal or unequal intervals along the circumferential direction of the gear 11Gn. A drive gear 14 that meshes with the corresponding gear 11Gn is fixed to the drive shaft of each servo motor Mn. When each servo motor Mn is used in a high rotation range, the drive gear 14 can drive the rocking lever 13 in a state of being decelerated to a speed corresponding to the rotation speed of the loom only by meshing with the gear 11Gn without a speed reducer. It is set to the number of teeth. Each servo motor Mn is equipped with a rotary encoder (not shown) that outputs its rotation angle information. The servo motor Mn is controlled by an opening control computer C ₁ as a control means. The opening pattern of each heald frame Sn is input in advance to the opening control computer C ₁ . The opening pattern means an opening position pattern of the heald frame Sn in one cycle of the loom.

The loom control computer C ₀ controls the operation of the loom drive motor M ₀ . The loom control computer C ₀ operates the loom drive motor M in response to the ON operation of the start switch 15.
_{When 0} is started, a start signal is output to the opening control computer C ₁ . The shed control computer C ₁ is a rotary encoder 1 as a loom rotation angle detection means for detecting a start signal input, a shed pattern, and a rotation angle of the loom.
Drive control of each servo motor Mn is performed based on the angle detection information obtained from 6 and the rotation angle information from the rotary encoder of each servo motor Mn.

The servomotor Mn is operated to drive the gear 1
4 is rotated, the gear 11G meshes with the drive gear 14
n rotates around the support shaft 10. Then, the shaft support 12 is eccentrically rotated and the swing lever 13 is swung, and the heald frame Sn is vertically moved via the link mechanism. Since the rocking lever 13 that transmits power to the link mechanism is driven by the gear 11Gn supported by the common support shaft 10, even if each link mechanism and the rocking lever 13 are composed of parts having the same size, The gear 14 moves at the same rate with respect to the same amount of rotation.
Further, since the plurality of servo motors Mn are arranged along the circumferential direction of the gear 11Gn on the same mounting surface, the space for disposing the servo motors Mn can be efficiently used.

When the eccentric wheel that drives the rocking lever 13 is directly driven by a motor and a motor that does not require a speed reducer corresponding to the number of revolutions of the loom is used, it is necessary to use a low-rotation high-torque motor. This increases the volume of the motor itself. Conventionally, in order to miniaturize each drive motor, a high rotation type motor equipped with a speed reducer is used, but the volume is increased by the speed reducer equipped with each motor, and the corresponding arrangement is required. Space is required. However, in this embodiment, since the reduction mechanism is constituted by the gear 11Gn and the drive gear 14, the high rotation type servo motor Mn directly drives the drive gear 14.
Even if is driven, the rocking lever 13 is decelerated to rock at a speed corresponding to the rotation speed of the loom and rocks. Therefore, the servomotor M
The arrangement space of n can be made small.

Further, the number of drive motors that can be arranged on the same mounting plane can be increased as compared with the following embodiment in which the swing lever 13 is directly swung by the sector gear. Further, in this embodiment, even if the gear 11Gn is rotated in one direction, the swing lever 1
Since 3 is oscillated, it is not necessary to use a motor capable of rotating in the forward and reverse directions as the servo motor Mn, which reduces the cost and simplifies the control.

(Second Embodiment) Next, a second embodiment will be described with reference to FIGS.
It will be described based on. In this embodiment, the link mechanism is swung by a sector gear as a power transmission means, and the point is configured so that the heald frame can be accurately arranged at the limit opening positions of the upper opening position and the lower opening position. It is significantly different from the above embodiment. Further, in this embodiment, the number of heald frames Sn is four, which is one less than that in the above-mentioned embodiment. The same parts as those in the above embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

Height position detectors F ₁ , F ₂ , F ₃ , F ₄ as height position detecting means are attached to the inner surface of the side frame 1. The height position detector F ₁ is a heald frame S ₁
The height position detector F ₂ detects the height position of the heald frame S ₂
The height position of is detected. The height position detector F ₃ is a heald frame S
The height position detector F ₄ detects the height position of _{3 and} the heald frame S
Detect the height position of ₄ .

The link mechanism is the support shaft 7 and the jack lever.
8 is not provided, and the inside of the window 1a of the side frame 1 is
Sector gear 17G with the same number as the heald frame Sn₁, 17G₂, 17
G₃, 17G_FourIs rotatably supported with respect to the spindle 10.
ing. Each sector gear 17Gn (n = 1 to 4) is connected
It is connected to the swing lever 3A via the pad 9.
Each sector gear 17Gn has a servomotor that can rotate in forward and reverse directions.
M₁, M₂, M₃, M _FourDrive gear 14 is meshing
It Each servo motor Mn (n = 1 to 4) has a rotary
Coder m₁, M₂, M₃, M_FourIs provided. Strange
Servo motor Mn, which is a high speed drive motor, is used for opening
Computer C₁Receive the operation control. Shift control means and reference
Aperture control computer C as value storage means₁Type in
The device 18 is connected. The input device 18 is for the warp T
Standard warp opening angle φ, heddle frame S_FourLower opening position L_Four ⁰And Hara
The point height position Y is set to the aperture control computer C.₁Input to
It is something. Lower opening position L_Four ⁰Is the heddle frame S_FourLowest of
It is the height position and is represented by the distance from the origin height position Y.
It Aperture control computer C₁Is the input reference warp
Opening angle φ, lower opening position L_Four ⁰Reference value and origin height position
Store Y. Origin warp position Y is warp yarn T
It is the height position of the heddle frame Sn arranged on the screen. Also, the opening
Control computer C₁Is the opening pattern of each heald frame Sn
Has been entered in advance. The opening pattern is for each weft insertion
Limiting opening that is the upper opening position or lower opening position of the heddle frame Sn
It is either above or below the position.

The loom control computer C ₀ controls the operation of the loom drive motor M ₀ . The loom control computer C ₀ operates the loom drive motor M in response to the ON operation of the start switch 15.
_{When 0} is started, a start signal is output to the opening control computer C ₁ . The shed control computer C ₁ receives the start signal, the shed pattern, and the angle detection information obtained from the rotary encoder 16 that detects the rotation angle of the loom.
Based on the height position detection information of each heald frame Sn obtained from the height position detector Fn, the opening control program shown in the flowcharts of FIGS. 7 and 8 is executed.

Aperture control computer C₁Is the activation signal
Servo motor M in response to force_FourReverse operation, this reverse
By operation, heald frame S_FourMoves down. Aperture control computer
Ta C ₁Is the height position detector F_FourHeddle frame detected by
S_FourHeight position X_FourAnd lower opening position L_Four ⁰Compare with. High
Position X_FourIs the lower opening position L_Four ⁰, The aperture control
Computer C₁Is the servomotor M_FourStop the operation of.
Hazel frame S_FourIs the lower opening position L_Four ⁰Placed at the limit opening position
After that, the opening control computer C₁Is the origin height position
Y, reference warp opening angle φ, and detected lower opening position L_Four ⁰To
Based on the upper opening position Hn of the heddle frame Sn⁰Limit opening
Position and lower opening position Lj of the heddle frame Sj (j = 1 to 3)⁰
Is calculated and stored. Upper opening position H
n⁰And the lower opening position Lj⁰Is the distance from the origin height position Y
It is represented by.

After calculating the upper opening position Hn ⁰ and the lower opening position Lj ⁰ , the opening control computer C ₁ determines the servomotor Mn.
To operate in reverse. The opening control computer C ₁ detects the height position X of the heald frame Sn detected by the height position detector Fn.
n is compared with the origin height position Y. When the height position Xn coincides with the origin height position Y, the opening control computer C ₁ stops the operation of the servo motor Mn. When the height positions of all the heald frames Sn are aligned with the origin height position Y, the warp yarns T are aligned with the warp line. When the warp yarns T are aligned at the initial position on the warp line, the opening control computer C ₁ controls the rotation speed of each servo motor Mn based on the set opening pattern.

The opening control computer C ₁ compares the height position Xn of the heald frame Sn detected by the height position detector Fn with the limit opening position Ln ⁰ or the limit opening position Hn ⁰ . Based on this comparison, the opening control computer C ₁ sets the height position Xn to the limit opening position Ln ⁰ or the limit opening position Hn.
The rotation speed of the servo motor Mn is controlled on the basis of the opening motion pattern that matches ⁰ . The opening movement pattern is a vertical movement speed pattern of the heddle frame Sn, that is, a rotation speed pattern of the servo motor Mn. The aperture control computer C ₁ uses the rotary encoders m ₁ , m ₂ ,
Feedback control is performed to match the rotation speed grasped based on the rotation angle information from m ₃ and m ₄ with the rotation speed pattern.

When the heald frame Sn reaches the limit opening position Ln ⁰ or the limit opening position Hn ⁰ , the opening control computer C
₁ controls the rotation speed of each servo motor Mn in the same manner as described above based on the opening pattern in the next rotation of the loom. Opening the control computer C ₁ In such rotation speed control is the limit open position Ln ⁰ or static timing a predetermined loom heald frames Sn at the limit open position Hn ⁰ based on the rotation angle information of the loom obtained from the rotary encoder 16 Synchronize with the rotation angle.

When the weaving stop signal is transmitted, the loom control command
Computer C₀Is the loom drive motor M ₀Stop the operation of
It This stop time is just before beating and warp T warps
It's time to line up. Loom control computer C₀
Is a weaving stop signal and the opening control computer C₁Output to
Aperture control computer C₁Responds to input of weaving stop signal
Then, the servo motor Mn is operated based on the closing movement pattern.
Stop moving. The origin of the closing movement pattern is each heddle frame Sn
It is a control pattern for aligning with the height position Y. Each height position inspection
The height position Xn detected by the output device Fn is the origin height position.
If it matches the position Y, the aperture control computer C₁Is a servo
The operation of the motor Mn is stopped.

[0046] When a start signal after the weaving stop is input to the loom control computer C _0, the loom control computer C ₀ outputs an activation signal to open the control computer C _1, similarly to the opening control computer C ₁ is the aperture pattern The rotation speed control of each servo motor Mn is performed according to the above.

The other lower open position L ₁ ⁰ by setting the lower opening position L ₄ ⁰ reference warp shed angle φ and heald frames S ₄ in this embodiment, L ₂ ^0, L ₃ ^0, and the upper open position H ₁ ⁰ , H ₂ ⁰ , H ₃ ⁰ , H
₄ ⁰ limiting aperture position is calculated as. Therefore, it is not necessary to input and set all the limit opening positions, and the maximum opening amount of each heald frame Sn can be easily set. There is backlash in the driving force transmission system from the servo motor Mn to the heald frame Sn, and it is not possible to guarantee an exact match between the rotation angle position of the servo motor Mn and the height position of the heald frame Sn. However, since the rotation speed control of the servo motor Mn is performed based on the actual height position detection of the heald frame Sn, the influence of the backlash is eliminated. In a loom such as a jet loom, it is important to accurately arrange the heddle frame at the limit opening position for a predetermined period in order to achieve good weft insertion. However, the heddle frame Sn of this embodiment has a predetermined heddle frame Sn. It is precisely located at the limit opening position of.

Also in this embodiment, since the servo motor Mn is arranged along the circumferential direction of the sector gear 17Gn,
The arrangement space of the drive motor is effectively used. Further, in this embodiment, since the support shaft 7 and the jack lever 8 are not provided, the structure of the link mechanism is simplified, and the sector gear 17
Since the driving force is directly transmitted to the link mechanism by Gn, the structure of the entire driving mechanism becomes simpler.

(Third Embodiment) Next, a third embodiment will be described.
In the jet loom, the lower opening position may be adjusted and changed according to the type of weft. For example, in the spun yarn, the lower opening position may be slightly changed to the lower side, and in the filament yarn, the lower opening position may be slightly changed to the upper side. In this embodiment, the aperture control computer C ₁ is shown in FIG.
Also, the opening control program shown in the flowchart of FIG. 10 is stored, and by executing the program, it is possible to cope with the adjustment change of the limit opening position.

[0050] functions as a reference aperture position correcting means input device 18 in this embodiment, the correction amount of the lower open position L ₄ ⁰ [Delta] L
₄ ⁰ is inputted to the aperture control computer C ₁ by an input operation of the input device 18, the opening control computer C ₁ is storing the correction amount [Delta] L ₄ ⁰ input. If there is no storage of the correction amount of the lower open position L ₄ ^0, the opening control computer C ₁ performs the same opening control and the examples. Under open position L ₄ ⁰
If there is a correction amount storage of [Delta] L ₄ ^0, opening the control computer C ₁ is adopted ^{_{(L 4 0 + ΔL 4 0}} ) as the lower open position,
The lower opening position with ^{_{(L 4 0 + ΔL 4 0}} ) is calculated other lower opening position ^{(Lj 0 + ΔLj 0) (} j = 1~3). ΔLj ⁰ is a correction amount for the lower opening position Lj ⁰ . The opening control computer C ₁ determines the lower opening position (Ln ⁰ +
ΔLn ⁰ ) and the upper opening position Hn ⁰ are used to perform the same opening control as in the above embodiment.

The present invention is limited to the above embodiments.
For example, it may be embodied as follows. (1) As shown in FIG. 11, the servomotor M₁, M₂，
M₃, M_FourDrive force of worm 19 and sector shape
The heddle frame S through the worm wheel 20₁, S ₂，
S₃, S_FourConfigured to communicate to. That is, the driven gear
As a drive gear, a worm wheel 20 is provided as
Home 19 is provided. Worm 19 and worm wheel
The self-locking mechanism is used for the servo motor Mn.
Does not require a special locking mechanism. Also, the servo motor M
n are arranged adjacent to each other in parallel, and the arrangement space is effective.
It can be used efficiently.

(2) The worms 19 meshing with the adjacent worm wheels 20 are arranged at positions where they do not overlap each other when viewed from the axial direction of the worm wheel 20, for example, as shown in FIG. . Generally, the outer diameter of the worm 19 is larger than the thickness of the worm wheel 20, but with this structure, even if the interval between the adjacent worm wheels 20 is narrowed, the worm 19 and the servomotors do not interfere with each other, and even in a narrow space. More heald frames Sn can be arranged.

(3) Instead of directly engaging the drive gear 14 with the gear 11Gn, as shown in FIG.
The intermediate gear 21 may be arranged between the n and the drive gear 14. Further, as shown in FIG. 14, the intermediate gear 21 may be arranged between the drive gear 14 of every other servo motor Mn (n = 1 to 8) and the corresponding gear 11Gn. In any case, the number of installable drive motors can be increased for the gear 11Gn having the same outer diameter. Similarly, in the case of the sector gear 17Gn, the intermediate gear may be arranged.

(4) Gear 11 instead of providing an intermediate gear
The outer diameter of Gn or the sector gear 17Gn may be increased. (5) In the first embodiment, a worm wheel is provided as a driven gear instead of the gear 11Gn, and each servo motor Mn is provided.
A worm that meshes with the worm wheel may be provided on the output shaft as a drive gear. In this case, as in (2), if the worms that mesh with the adjacent worm wheels are arranged at positions that do not overlap each other when viewed from the axial direction of the worm wheel, more heald frames Sn can be provided in a narrow space.
Can be installed.

(6) Servo motor M as in the first embodiment
In the case of a configuration in which the gear 11Gn is rotated by the drive gear 14 provided in the n, the servomotor Mn is used as shown in FIG.
By mounting not only on the front surface of the side frame but also on the rear surface, a double number of heald frames Sn can be arranged.

(7) Instead of providing the shaft support 12 on the gear 11Gn in the first embodiment, the cam 22 may be integrally rotatable as shown in FIG. 16 and the cam lever 23 may be provided on the link mechanism side. The cam lever 23 is constantly urged by a spring (not shown) in a direction in which the cam follower 23 a contacts the cam 22.

(8) In the first embodiment, the jack lever 8 may be omitted and the swing lever 13 may be connected to the swing lever 3A. (9) In the second embodiment, a gear may be provided instead of the sector gear 17Gn, and the gear may be connected to the swing lever 3A via the connecting rod 9. In this case, the number of servo motors Mn that can be arranged on the same circumference increases.

(10) Also in the second and third embodiments, the same structure as in the first embodiment or the structure of (7) is adopted as the means for transmitting the driving force to the operating mechanism of the heald frame. You may. However, in the structure using the cam, the structure in which the cam is rotated normally is not preferable.

(11) In the configuration of (1), an ordinary (circular) worm wheel may be used instead of the sector-shaped worm wheel 20. In this case, the degree of freedom of the arrangement position of the servo motor Mn increases.

(12) In the second and third embodiments, the other limit opening positions are calculated based on the actual height position of one heald frame arranged at the lower opening position based on the start command. Alternatively, another limit opening position may be calculated from the value of one preset lower opening position or upper opening position.

(13) A height position detector may be provided in the device of the opening mechanism of the first embodiment to perform the same opening control as in the second and third embodiments. (14) A stepper motor or a motor controlled via an inverter may be used as the drive motor.

Inventions other than those described in the claims that can be grasped from the respective embodiments and modifications will be described below together with their effects. (1) In the invention described in any one of claims 1 to 3 , the driving gear is engaged with the driven gear via the intermediate gear. In this case, the number of drive motors that can be installed can be increased even if the driven gears have the same outer diameter.

(2) In the invention described in claim 5 , the worms meshing with the adjacent worm wheels are arranged at positions where they do not overlap each other when viewed in the axial direction of the worm wheel. In this case, the worms do not interfere with each other even if the distance between the adjacent worm wheels is narrowed.

[0064]

As described in detail above, the first to seventh aspects of the invention are described.
In the invention described in (1), the drive motor can be arranged by efficiently using the arrangement space, and the number of heddle frames can be increased while suppressing the increase in size of the entire loom.

In the invention described in claims 3 and 4 ,
Since the actuating mechanism is directly driven by the driven gear, the structure is simple as compared with the configuration in which the actuating mechanism is driven by the swinging member or cam supported by the shaft supporting portion that rotates at the eccentric position.

Further, the inventions according to claim 6 and claim 7 are further based on one reference limit opening position and reference warp thread opening angle, and other upper opening positions and lower opening positions of all heddle frames. Is calculated and the rotational speed of the speed change drive motor is controlled based on the actual detection of the height position of the heddle frame. Therefore, the heddle frame can be easily set at the limit opening position.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a first embodiment.

FIG. 2 is a partially omitted perspective view.

FIG. 3 is a partial sectional view.

FIG. 4 is a partially cutaway front view of the second embodiment.

FIG. 5 is a partially omitted perspective view.

FIG. 6 is a side view.

FIG. 7 is a flowchart showing an opening control program.

FIG. 8 is a flowchart showing an opening control program.

FIG. 9 is a flowchart showing an opening control program of the third embodiment.

FIG. 10 is a flowchart showing an opening control program.

FIG. 11 is a partially omitted perspective view showing a modified example.

FIG. 12 is a partial schematic perspective view of another modification.

FIG. 13 is a partial front view showing the arrangement of a drive motor according to another modification.

FIG. 14 is a partial front view showing the arrangement of a drive motor according to another modification.

FIG. 15 is a partial cross-sectional view of another modification.

FIG. 16 is a partial front view showing the arrangement of a drive motor according to another modification.

FIG. 17 is a schematic plan view of a conventional device.

FIG. 18 is a schematic plan view of a conventional device.

[Explanation of symbols]

3A, 3B ... Spaces forming a link mechanism as an operating mechanism
Ing lever, 4 ... Same transmission rod, 5A, 5B ... Same
Reconnecting rod, 8 ... Also Jack Lever
-, 10 ... spindle, 11G₁~ 11G_Five, 11Gn ... driven
Gears as gears, 12 ... Shaft support, 13 ... Oscillating members
Swing lever, 14 ... Drive gear, 17G ₁~ 17
G_Four, 17Gn ... Sector gears as driven gears, 19 ...
Worm as a driving gear, 20 ... W as a driven gear
Home wheel, 16 ... As a loom rotation angle detection means
Rotary encoder, 18 ... As reference opening position correcting means
Input device, 22 ... Cam, 23 ... Cam lever, S₁，
S₂, S₃, S_Four, S_Five, Sn ... Heald frame, F₁, F₂，
F₃, F_Four... Height position detection as height position detection means
Bowl, M₁, M₂, M₃, M_Four, M_Five, Mn ... Drive motor
Servo motor as C₁... Reference value storage means and shift
An opening control computer as a control means.

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) D03C 13/00 D03C 5/00 D03C 1/14

Claims (7)

(57) [Claims] 1. One heald frame and one drive motor
An opening control device in a loom that is connected in a pair and drives a plurality of heald frames separately by dedicated drive motors, and an operation provided corresponding to each heald frame for moving the heald frames up and down. a mechanism, a support shaft disposed so as to extend along the arrangement direction of the heald frame, wherein Ru is rotatably supported on the support shaft as a rotation around the support shaft at positions corresponding to the respective heald frames With its eccentric position
A driven gear with a shaft supporting part formed on it and rotatable on the shaft supporting part
A rocking member that is supported by and is connected to the actuating mechanism.
And a driving gear for driving the driven gear, the driving gear transmitting means configured to transmit the driving force to the operating mechanism, and the driven gear.
A shedding control device in a loom, comprising: a variable speed drive motor arranged along the circumferential direction of the loom and control means for controlling the drive motor. 2. One heald frame and one drive motor
Connected in a pair 1 and multiple heald frames are each driven by a dedicated drive model.
It is a shed control device in a loom that is driven separately by
It is provided corresponding to each heald frame to move the heald frame up and down.
Operating mechanism and a support shaft arranged to extend along the arrangement direction of the heddle frame
With the spindle as the center of rotation at a position corresponding to each heddle frame
Is rotatably supported by the support shaft and the cam is integrally formed.
It is a driven gear that is formed and transmits driving force to the operating mechanism.
The driving gear transmitting means for reaching, the actuating mechanism includes a cam lever corresponding to the cam, the driving gear for driving the driven gear, and the driven gear.
Drive motor arranged along the circumferential direction of
And an opening control device in a loom , comprising: a control unit that controls the drive motor . 3. A pair of one heald frame and one drive motor
1 and connect multiple heald frames to their own drive mode.
There an opening control equipment in a loom that drives separately in data
It is provided corresponding to each heald frame to move the heald frame up and down.
Operating mechanism and a support shaft arranged to extend along the arrangement direction of the heddle frame
With the spindle as the center of rotation at a position corresponding to each heddle frame
Is rotatably supported by the support shaft and the actuating mechanism
Is a driven gear connected to the
The driven gear includes a driving force transmitting means for transmitting the driving force and a driving gear for driving the driven gear.
It is arranged along the circumferential direction of the
A shedding control device for a loom , comprising a variable speed drive motor and a control means for controlling the drive motor . 4. A sector gear is used as the driven gear.
A shedding control device for a loom according to claim 3 . 5. A worm wheel as the driven gear
The output shaft of the drive motor includes a drive gear
When a worm that meshes with the worm wheel is provided
In the circumferential direction of the driven gear on the same plane as the heald frame corresponding to
It is arranged along any one of claims 1 to 4.
The shedding control device in the loom according to item 1 . 6. The method according to any one of claims 1 to 5.
In the invention described above, the lower opening position or the upper opening position of the heddle frame
Height to detect the height position including the upper and lower limit opening position
The position detection means serves as a reference for one of the lower opening position and the upper opening position of the heddle frame.
One of the limit opening positions and the lower opening position or upper opening of the heddle frame
The standard value of the standard warp opening angle
A reference value storage means for storing and a loom rotation angle detection means for detecting the rotation angle of the loom are provided.
And the loom rotation angle detection means as the control means.
Loom rotation angle information, the reference opening position and the reference warp
While calculating other limit opening positions based on the opening angle,
Height of the heald frame detected by the height position detecting means
Rotation of the drive motor based on position and limit opening position
An opening control device for a loom, which is provided with a shift control means for controlling the speed shift . 7. A reference stored in the reference value storage means
Reference aperture position correction means for correcting and changing the limit aperture position
The shedding control device in the loom according to claim 6, further comprising: