JPH01298237A - Apparatus for controlling dobby machine - Google Patents

Abstract

PURPOSE:To reduce the size of an electromagnetic actuator and prevent the lowering of the durability of the actuator by applying a driving force to swing a selector lever with a vibration shaft and using the electromagnetic actuator solely to incline a band plate. CONSTITUTION:Opposing face of each selection lever 43, 45 is provided with a pusher lever 61, a selector lever 81, a vibration shaft 90, a band plate 91, an engaging member 95 and an electromagnetic actuator 97. The driving force of the selector lever is applied with the vibration shaft and the electromagnetic actuator is used solely for the inclination of the band plate to engage the engaging member with a member 93 to be engaged.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention comprises a selection lever disposed adjacent to a knife portion or a hook portion of a dobby machine, and a means for swinging the selection lever. Control of a passive double-acting dobby machine, which is equipped with a pressing part and has a configuration in which the pressing part presses either a knife part or a hook part to a position where it can be engaged with the other by swinging a selection lever with a swinging means. This invention relates to an improvement of a device (hereinafter abbreviated as “control device j”).

In this specification, the knife section refers to a pair of members that swing to pull the heald frame and engage with the hook section.

Further, the hook portion refers to a portion that engages with the knife portion.

<Prior Art> An example of a conventional control device 1 is shown in FIG. This control device l includes a pair of selection levers 3, 13 and this selection lever 3.
, 13 swinging means 20 and a locking mechanism 30.

The selection lever 3.13 has a base portion 4, 14 and a pressing portion 5.15.
and a secured arm 6.16. Base 4, 14
are pivotally mounted on support shafts 7 and 17, respectively. Further, an L-shaped pressing portion 5.15 is formed on the left side in the figure, and an engaged arm 6.16 is formed on the right side. Each engaged arm 6.1
A compression coil spring 10 is installed between the selection lever 3 and the selection lever 3.
is biased clockwise, and the selection lever 13 is biased counterclockwise. Note that the reference numeral 8.18 in the figure is a stopper.

The swinging means 20 includes a pusher lever 21 and a cam device 23 for swinging the pusher lever 21. pusher lever 21
A pressing head 25 is provided at the free end of.

The lock mechanism 30 consists of an L-shaped lock lever 31 and a solenoid (t61 actuator) 33. The lock lever 31 is pivotally connected to the support @35, and the tension coil spring 3
7, it is biased counterclockwise. In addition, an engaged arm 6.16 is provided at a portion facing the selection lever 3.13.
A retaining step portion 39 is formed which can be engaged with.

In the figure, reference numeral 2.12 is a knife portion, reference numeral 9.19 is a hook portion, and reference numeral 26 is a jack lever.

The pusher lever 21 presses the selection lever 3.13 in accordance with the shape of the cam 23 (a concave portion and a convex portion are formed at positions shifted by 180 degrees), causing them to swing. Thereby, the knife part 2.12 is pressed with its pressing parts 5, 15 to a position where it can engage the hook part 9.19. The pressing time of the pusher lever 21 is determined by the shape of the cam 23.
One example is instantaneous. And knife part 2.12
The engagement of the hook portion 9.19 with the hook portion 9.19 is controlled by a locking mechanism 30. That is, the knife part 2.12 and the hook part 9.
19, the lock lever 31 is rotated clockwise by the solenoid 33, and the engagement step 39 is engaged with the selection lever 3.13 which is being swung by the pusher lever 21. 6. Engage with the coupling arm 6, ]6.

Then, the engagement between the two is maintained by the biasing force of the spring 0, and the selection levers 3, 13 are fixed in a state where their pressing portions 5.15 press against the knife 2.12. This results in
Knife part 2.12 and hook part 9.19 are no longer able to engage.

On the other hand, when engaging the hook portion 2.12 and the knife portion 9.19, the engaging step portion 39 of the lock lever 31 is not engaged with each engaged arm 6.16 of the selection lever 3.13. (does not operate solenoid 33). Then, the knife part 2.1 is moved to the pusher lever 21.
The selection lever 3° 13, which has been swung to engage the hook 119, 19, is returned to its original position by the spring 10. Therefore, the knife part 2.12 and the hook part 9
．． 19 becomes engageable (see Japanese Unexamined Patent Publication No. 70732/1983).

Also, as a publication related to this invention, JP-A-59-1
99833. Please refer to Publication No. 61-225343.

<Problems to be Solved by the Invention> However, the control device 1 having the above configuration has the following problems.

In other words, an elongated locking lever 31 is required to directly control the actuation of the selection lever 3.13. Since the lock lever 31 has a large rotational moment, the solenoid 33 is required to have a large output. Then, the solenoid 33 becomes too large to fit into the dobby machine in which a plurality of knife parts and hook parts are arranged side by side.

Further, when a large output is required from the solenoid 33, its durability tends to decrease, and maintenance becomes labor-intensive.

Means for Solving the Problems> As a result of intensive studies to solve the above problems, the inventor came up with a control device for a dobby machine having the following configuration.

The dobby machine includes a selection lever disposed adjacent to each of a pair of knife parts or a pair of hook parts, and a means for swinging the selection lever. A control device for a passive double-acting dobby machine in which a pressing part presses one of a knife part or a hook part to a position where it can engage with the other by swinging, the control device having a configuration in which the opposing surface of each selection lever is includes a pusher lever, a selector lever, a vibration shaft, a band plate, an engaging member, and an electromagnetic actuator, in which a concave portion and a convex portion are arranged in the longitudinal direction of the selection lever, and a swinging means has the following configuration requirements. A control device for a dobby machine, characterized in that the pusher lever swings between the selection levers, has a pressing head on one end that can come into contact with the convex part of the selection lever, and a pusher lever on the other end that swings between the selection levers. The selector lever is pivotally connected to the selector lever, and the selector lever has one end pivotally connected to the fixed shaft with the pusher lever being pivoted approximately at the center, and the other end is provided with an engaged portion at a predetermined location. The band plates are connected to each other, and the vibration shaft that contacts the back of the selector lever vibrates in the direction in which the concave and convex portions of the selection lever are arranged, causing the selector lever to swing around the fixed shaft, causing the pusher lever to move. and the band plate are vibrated in the direction in which the concave portion and the convex portion are arranged in the selection lever, and an engaging member that can engage with the engaged portion is provided near the band plate, and the band plate is tilted at a predetermined timing. An electromagnetic actuator is disposed, and the operation of the electromagnetic actuator causes the band plate to be tilted at a predetermined timing, and the engaged portion and the engaging portion engage with each other, thereby fixing the selector lever.

<Example> Hereinafter, this invention will be explained in more detail based on examples.

First Embodiment (Figs. 1 and 2) Fig. 1 shows the control device 41 with the electromagnet 97 in the on state,
FIG. 2 shows the control device 41 with the electromagnet 97 in an off state.

The control device 41 in the exemplary embodiment consists of a selection lever 43.45 and its rocking means 60.

A pair of selection levers 43.45 are provided corresponding to the knife parts 101, 103, and the base part 4 is pivotally connected to a support shaft 47.48.
3a, 45a and pressing parts 43b, 45b that can come into contact with the knife parts 101 and 103. Both selection levers 43.45
A tension coil spring 50 is installed between them. Stoppers 49.51 are provided to prevent each selection lever 43.45 from falling down. In addition, the base 43a
, 45a, a concave portion 53.55 and a convex portion 57.59 are sequentially provided from right to left on the section side.

Incidentally, this selection lever 43.45 presses the knife portion 101.103 at a predetermined timing, and pushes this into the hook portion 105.
, 107. Knife part 101
．． 103 reciprocates in response to the swinging of the swinging rod 109;
For example, as shown in FIG.
While engaged, the jack lever 111 is pulled by the knife portion 101. This causes the heald frame to move.

The swinging means 60 is a pusher lever 61. Selector lever 81. Vibration axis 90. Band plate 91. It comprises an engaging member 95 and an i-magnet 97.

The pusher lever 61 has a pressing head 63 at its upper end. As shown in FIG. 1, when the pusher lever 61 swings, this pressing head 63 can selectively come into contact with the convex portion 57.59 of the bar 43.45. A swinging arm 71 is pivotally attached to approximately the middle end of the pusher lever 61, and a selector lever 81 is pivotally attached to the lower end. The pivoting means is not particularly limited, but a bottle or the like may be used.

The swing arm 71 consists of a vertical lever 73 connected to the middle of the pusher lever 61 and a horizontal lever 77 fixed to the vibration shaft 75, and both levers are pivotally connected to each other. The swing shaft 75 swings in the circumferential direction in synchronization with the swing rod 109 by a cam mechanism (not shown). As a result, the pusher lever 61 swings about the pivot point to the selector lever 81. Note that this rocking motion has a stopping time at the top dead center and the bottom dead center. Knife part 101°103
This is because in order to engage the knife parts 101 and 107 with the hook parts 105 and 107, it is necessary to keep pressing the knife parts 101 and 103 with the selection levers 43 and 45 for a predetermined period of time.

The selector lever 81 is arranged perpendicularly to the pusher lever 61, has one end pivotally connected to a shaft 83, and has a band plate 91 connected to the other end. Further, a pin 87 protrudes from the edge on the pivot side, and a tension coil spring 89 is installed there. As a result, the selector lever 81 is urged in the clockwise direction, thereby eliminating looseness between the back portion 86 and the vibration shaft 90.

The vibration shaft 90 is moved from left to right in the figure (the recess 53.55 and the convex 57 of the selection lever 43.45) by a cam mechanism (not shown).
．． 59).

This vibration is synchronized with the swinging of the swinging rod 109 and the swinging arm 71.

This vibration causes the selector lever 81 to swing about the shaft 83. Note that it is preferable to make the vibration trajectory of the vibration shaft 90 coincide with the virtual circumference centered on the shaft 83, since the vibration shaft 90 and the selector lever 81 will not slide against each other.

The strip plate 91 is made of spring steel, and has a through hole 92 formed in its upper end. A peripheral portion 93 of this through hole 92 becomes an engaged portion (see FIG. 3). When this strip plate 91 is in an unloaded state, as shown by the solid line in FIG. 1, the reference numeral 99 in FIG. 6, which is in contact with the guide 94, is also a guide. The shape of this guide 99 is not particularly limited, and may be a roller.

This band plate 91 reciprocates in the left-right direction in the drawing as the selector lever 81 swings, and is held at a position corresponding to the through hole 92 when the band plate 91 is located at the left dead center. A mating member 95 is provided. This engaging member 95 has a pawl portion 96, and when the strip plate 91 is inclined, the pawl portion 96 engages with the peripheral wall 93 of the through hole 92, as shown by the imaginary two-dot chain line in FIG. The electromagnet 97 is an actuator for tilting the strip plate 91, and is controlled by the CPU based on a memory storing pattern information corresponding to the pattern of the woven fabric.

In addition, the engaging member 95! The magnet 97 is held by a retainer (not shown).

Next, the control device 41 of the embodiment will be explained.

When the electromagnet 97 is on (Fig. 1), as the vibration shaft 90 moves to the left, the selector lever 8
1 swings counterclockwise (that is, when the strip plate 91 reaches the left dead center), the electromagnet 97 is turned on based on a command from the CPU. Then, the strip plate 91 is attracted to the electromagnet 97 and is bent away from the guide 99 and tilted as shown in the figure, and the peripheral wall 93 of the through hole 92 engages with the claw portion 96. Thereby, even if the vibration shaft 90 moves to the right, the band plate 91 is maintained at the left dead center. Therefore, the selector lever 81 is maintained in the state shown by the solid line in FIG.
It will be located at the same height as the convex portions 57 and 59 of No. 5.

The pusher lever 61, which is swung by the oscillating arm 71, is moved by the selection lever 43 by its pressing head 63.
(selection lever 45) is tilted counterclockwise (clockwise), and the knife parts 101 and 103 are moved to the hook part 105, respectively.
, 107 (at this time, the vibration shaft 90 is located at the bottom dead center, see the tentative 52-point dashed line in Figure 2). In the case of the nursery school, the heald frame (not shown) will be towed.

In order to maintain the traction state of the heald frame, the electromagnet 97 is kept on.

When releasing the traction of the heald frame, the electromagnet 97 is turned off when the vibration shaft 90 reaches the dead center on the left side and comes into contact with the back part 86 of the selector lever 81. Then, the strip plate 91 made of spring steel returns to the state shown by the solid line in FIG. 1 due to its spring elastic force. Therefore, the claw portion 96 and the peripheral edge 9 of the through hole 92
3 is released, and the selector lever 81 and pusher lever 61 are guided to the state shown in FIG.

When the electromagnet 97 is off (Fig. 2) When the electromagnet 97 is off, the selector lever 81
is the peripheral wall 9 of the through hole 92 that oscillates along with the vibration shaft 90.
This is because 3 and the claw portion 96 do not engage with each other. Then, when the vibration shaft 90 is located at the bottom dead center, the pusher lever 61
The pressing head 63 of the selection lever 45 (selection lever 43
), the selection lever 45 (selection lever 43) can be rotated clockwise (counterclockwise). Therefore, the knife parts 101, 103 and the hook parts 105, 107 is not engaged. This state is a state in which the heald frame is not towed.

In order to maintain the non-traction state of the heald frame, the electromagnet 97 is kept turned off.

When the heald frame is towed, the electromagnet 97 may be turned on again.

Modifications of this embodiment will be described below with reference to the drawings (FIGS. 4 to 7).

Note that FIG. 3 shows the band plate 91 and the engaging member 95 in FIG. 1.
and FIG. 9 is a perspective view showing the positional relationship of an electromagnet 97.

FIG. 4 shows a configuration in which the electromagnet 97 is replaced by a solenoid 97a in the configuration shown in FIG. Thereby, the strip plate 91 can be formed of a non-magnetic material (plastic or the like).

In FIG. 5, a pair of solenoids 97a are arranged facing each other with a strip 91 in between. According to this, since the engagement between the peripheral edge 93 of the through hole 92 and the claw portion 96 is controlled by the pair of solenoids 97a, the strip plate 91 does not need to have spring elasticity. Of course, the solenoid 97a can be an electromagnet 97, and as shown in FIG. Further, the pair of electromagnetic actuators disposed via the strip plate 91 may be an electromagnet 97 and a solenoid 97a, respectively.
A protrusion 93a (engaged portion) is provided on the engaging member 95a.
It is characterized in that an engagement groove 96a is provided in the.

Second Embodiment (Figs. 8.9.10) The control device 141 of this embodiment is different from that of the first embodiment in that the control device 141 is different from that of the first embodiment in that it has a locking lever 1 to a selection lever 43, 45, respectively.
43, 153 are arranged, and the button shear lever
61 is provided with a release member 160, and furthermore, engaged claws 148, 158 are provided at the lower end of each selection lever 43, 45. Note that the same members as in the first embodiment are given the same reference numerals, and their explanations will be partially omitted.

Each locking lever 143, 153 has a vertical arm 145.1
55 and horizontal arms 146 and 156, which are pivotally mounted on support shafts 144 and 154, respectively. The vertical arms 145, 155 have engaged claws 148, 1.
Step portions 149 and 159 are provided which can be engaged with 58, respectively. These stepped portions 149 and 159 are located on the selection lever 43.
．． 45 respectively connect the knife parts 101 and 103 to the hook part 1.
05.107, it is designed to spring elastically engage with the engaged claws 148, 158. In other words, as shown in FIG.
is not pressing the convex portion 57,59 of the selection lever, the stepped portions 149, 159 and the engaged claws 148, 158 are in an unengaged state, and each engaged claw 148, 158 is connected to the vertical arm. It is in a state where it rides on the thick part of 145.155.

The horizontal arms 146, 156 are arranged so as to be able to come into contact with the release member 160. The release member 160 projects from the right side of the suppression head 63 in the vertical direction in the pusher lever 61 .

In addition, numerals 147 and 157 are tension coil springs,
The lock lever 143 (lock lever 153) is biased clockwise (counterclockwise).

Incidentally, FIG. 9 shows the control device 141 of this embodiment applied to other types of dobby machines. This dobby machine has knife parts 101a, 103a and hook parts 105a, 107a.
The hook portion 105a is selected by the selection lever 43°45.
, 107a are operated. FIG. 10 also shows the control device 141 of this embodiment applied to other types of dobby machines. This dobby machine has a knife section 101b.
, 103b and hook parts 105b, 107b, and the hook parts 105b, 107b are operated by a selection lever 43.45. These knife parts 101b, 103
b are the swing shaft 113, 115 and the engagement arm 11, respectively.
It consists of 7,119 units.

The control device 141 of this embodiment is also the control device 4 of the first embodiment.
1, the electromagnet 97 is activated by a command from the CPU (not shown).
It is activated by turning on or off. The lock levers 143 and 145 provide the following unique effects.

Taking the lower middle lock lever 143 as an example, when the pusher lever 61 swings with the peripheral edge 93 of the through hole 92 in the strip plate 91 engaged with the pawl 96, the pressing head 63 presses the convex portion 57 of the selection lever 43 downward and rotates the selection lever 43 counterclockwise. Then, the engaged pawl 148 that had been riding on the thick portion of the vertical arm 145 moves six times to the stepped portion 149. Then, the lock lever 143 is moved by the tension coil spring 147.
is rotated clockwise, so that the engaged claw 148 and the stepped portion 149 are elastically engaged with each other.

When the engaged claw 148 and the stepped portion 149 engage in this manner, the selection lever 43 moves this knife portion 101 to the hook portion 1.
05 in a state where it can be engaged. Therefore, the time for which the selection lever 43 is pressed can be shortened as much as possible by the pressing head 63 of the button lever 61. This leads to faster Dobby machines.

On the other hand, to release the engagement between the knife part 101 and the hook part 105, do as follows.

When the knife part 101 is not engaged with the hook part 105, the electromagnet 9 is turned off, the selector lever 81 rotates clockwise, and the pressing head 63 vibrates between each recess 53.55 of the selection member 43.45. are doing. At this time, the release member 160 formed on the right side of the pressing head 63 presses the horizontal arm 146, and the lock lever 1
43 is rotated counterclockwise against the biasing force of the spring 147. Then, the engagement between the engaged claw 148 and the stepped portion 149 is released, and the pressing of the knife portion 101 by the selection lever 43 (for engaging with the hook portion 105) is also released.

Third Embodiment (FIG. 11) The control device 241 of this embodiment is a modification of that of the second embodiment. Components that are the same as those in FIG. 1 or FIG. 2 are given the same reference numerals, and their explanations will be partially omitted.

In this control device 241, lock levers 243, 253
In this case, only the vertical arms 245 and 255 were used. And a release member 26o.

270, the case 102 of the knife parts 101, 103;
．． 104 is characterized in that a pin-like member is provided at the lower end of each. Step 2 in vertical arms 245, 255
The design concept of 49,259 is the same as that of the second embodiment.

Next, the operation of this control device 241 will be explained.

The control device 241 of this embodiment is also the control device 4 of the first embodiment.
1, it operates by turning on or off the electromagnet 9 according to a command from a CPU (not shown). Then, by the lock levers 143, 145, each selection lever 43, 45 presses each knife part 101, 103, as in the second embodiment, and the knife part 101, 103 is moved to the hook part 105,
107 in a state capable of engagement.

On the other hand, the knife part iot, 103 and the hook part 105.10
7 is released by pressing the distal ends of the vertical arms 245 and 255 with release members 260 and 270, respectively.

<Operations and Effects of the Invention> As explained above, the control device of the present invention has a selection lever disposed adjacent to each of the pair of knife parts or the pair of hook parts of the dobby machine, and the swinging of the selection lever. The selection lever includes a suppressing part, and by swinging the selection lever with the swinging means, the pressing part presses either the knife part or the hook part to a position where it can be held with the other part. A control device for a passive double-acting dobby machine having the following configuration, in which a concave portion and a convex portion are provided in the longitudinal direction of the selection lever on the opposing surface of each selection lever, and the swinging means has the following structural requirements. Pusher lever, selector lever, vibration shaft, band plate,
A control device for a dobby machine characterized by comprising an engaging member and an electromagnetic actuator; the pusher lever swings between the selection levers, and has a pressing head on one end that can come into contact with the convex part of the selection lever. The other end of the selector lever is pivoted to the selector lever, and the -i side of the selector lever is pivoted to the fixed shaft, with the -i side pivoted to the fixed shaft, and the selector lever is pivoted to the fixed shaft at the other end, and the selector lever is pivoted to the fixed shaft at the other end. The band plates with engaged parts are connected, and the vibration shaft in contact with the back of the selector lever vibrates in the direction in which the concave part and the convex part of the selection lever are arranged, so that the selector lever moves around the fixed shaft. The pusher lever and the band plate are oscillated in the direction in which the concave portion and the convex portion of the selection lever are arranged in sequence, and an engaging member that can engage with the engaged portion and a predetermined member are provided near the band plate. An electromagnetic actuator that tilts the strip at a certain timing is provided, and the operation of the electromagnetic actuator causes the strip to tilt at a predetermined timing, and the engaged portion and the engaging portion engage, thereby operating the selector lever. This is a fixed configuration.

In this configuration, the selector lever is long and heavy like the lock lever (reference numeral 31) in the conventional example, but the driving force for swinging the selector lever is now provided by the vibration shaft. Since the electromagnetic actuator is used only to incline the strip in order to engage the engaged part with the engaging member, its output can be small, so the electromagnetic actuator can be made smaller and This will ensure the durability required for

[Brief explanation of the drawing]

1.2 is a diagram showing the control device 41 of the first embodiment, FIG. 3 is a perspective view showing the arrangement relationship of the strip plate 91, the engaging member 95, and the electromagnet 97, and FIGS. 4 to 7 show modified forms. 8 to 10 are diagrams showing the control device 141 of the second embodiment, FIG. 11 is a diagram showing the control device 241 of the third embodiment, and FIG. 12 is a diagram showing the control device 1 of the conventional example. Aru 1, 41
, 141, 241...control device, 2, 12. 10
1. 101a, 101b. 103a, 103b...-knife section, 3.13, 43, 45... selection lever, 5.15, 4
3b, 45b...pressing portion, 9, 19. 105.
105a, 105b. 107.107a, 107b --- Hook part, 53.5
5... Concave portion, 57.59... Convex portion, 60... Swinging means, 61... Pusher arm, 63... Pressing head, 81... Selector lever, 90... Vibration shaft , 91... Band plate, 93... Secured portion (periphery 93 of through hole 92), 95...
...Engagement member, 97...Electromagnetic actuator (electromagnet).

Claims (1)

[Scope of Claims] A dobby machine comprising a selection lever disposed adjacent to each of a pair of knife parts or a pair of hook parts, and a swinging means for the selection lever, the selection lever comprising a pressing part. , the control of a passive double-acting dobby machine configured such that, by swinging the selection lever with the swinging means, the pressing part presses one of the knife part or the hook part to a position where it can engage with the other. In the device, a concave portion and a convex portion are sequentially provided in the longitudinal direction of the selection lever on the opposing surface of each of the selection levers, and the swinging means includes a pusher lever, a selector lever, and a vibration shaft having the following configuration requirements. , a strip plate, an engaging member, and an electromagnetic actuator. The selector lever is provided with a press head that can be brought into contact, the other end of the selector lever is pivotally connected to the selector lever, and the selector lever has one end that is pivotally connected to the fixed shaft, with the selector lever being approximately centered on the part to which the pusher lever is pivotally connected. , a band plate having an engaged portion at a predetermined portion is connected to the other end side, and the vibration shaft is in contact with the back of the selector lever,
By vibrating in the direction in which the concave portion and the convex portion of the selection lever are arranged, the selector lever is swung about the fixed shaft, and the pusher lever and the band plate are moved into the concave portion of the selection lever. and an engaging member that can engage the engaged portion and an electromagnetic actuator that tilts the strip at a predetermined timing. and the strip plate is tilted at a predetermined timing by the operation of the electromagnetic actuator,
The selector lever is fixed by the engagement between the engaged portion and the engaging portion.