JPH0791719B2 - Loom heald control - Google Patents

Description

The present invention is a heald control device for a loom, comprising a drive member that is intermittently rotatable, the drive member having a notch, and into the notch, A connecting member connected to the eccentric disc is connectable, and the connecting member connects an intermittently rotatable drive member to the eccentric disc, and the eccentric disc is rotatably supported in the crank rod. Relates to the type in which is connected to the heald.

In the heald control device, the risk of erroneous control increases as the control speed increases.

An object of the present invention is to provide a heald control device that can achieve a high control speed without the risk of erroneous control.

This problem is solved according to the invention by a heald control device having the features of patent claim 1.

According to the means of the present invention, in the switching operation from the lower position of the opening to the upper position of the opening or vice versa, the force necessary for maintaining the connected state and the connected state is always applied to the connecting member. The force required to release the connection is provided or transmitted by the eccentric disc-lock pawl. When the drive member and the eccentric disc reach the dead center position, in other words the stop position, the connecting member is connected according to the respective position of the switching member, or the eccentric disc-lock pawl is initially locked up to this point. In order to release the connection of the connecting member, the controllable locking member is released, and after a very short time, the connecting force is overcome and the connecting member is released. The decoupling action, which slides and thus results in relatively great wear, is no longer necessary or possible. Also, in order to avoid such wear, the system waits until it is in a stopped state and then transmits the external force necessary for disconnection to the connecting member for an unnecessarily long switching time and also with high wear. Nor is it necessary to carry out the conventional operations which would result in another part being taken. The disconnection is done softly, thus reducing the noise generated.

Furthermore, according to the present invention, when switching from the opening lower side position to the opening upper side position or vice versa, the switching can be already performed before reaching the dead center position or the zero position or the stop position, and the connection can be released. The required external force can be transmitted to the connecting member. The force required to release the connection is provided by the eccentric disc-lock claw.

The invention will now be described with reference to the illustrated embodiment.

In the first embodiment of the heald control device according to FIGS. 1 and 2, a ring-shaped drive member 1 is fitted onto a shaft 2 in a non-rotatable manner, which shaft 2 is not shown. Thus, it is possible to intermittently rotate by 180 degrees in the direction of arrow 3. After each 180 degree rotation, shaft 2 briefly stops at the dead center position and then rotates again 180 degrees. The drive member 1 has two oppositely located cutouts 4, 5. Key 6
Connects the shaft 2 and the drive member 1 so that they cannot rotate relative to each other.

An eccentric disc 9 is provided on the drive member 1 via a rolling bearing which is concentrically arranged with respect to the shaft 2 and which is not visible from the outside.
Is rotatably supported. In this case, the drive member 1 partially overlaps the eccentric disc 9.

The eccentric disc 9 has a pin 11 on which a connecting member 12 in the form of a two-arm lever is pivotably supported. The connecting member 12 has a claw shape. The connecting protrusion 10 fits in the notches 4 and 5. The connecting protrusion 10 forms one end of the two-arm lever. The other end is formed by the arm 15. The connecting member 12 has a bending member 16, which is spring loaded by a spring 7 so that the connecting member 12 can be engaged in one of the notches 4 or 5 of the drive member 1. ing.

In the connected state, the connecting member 12 connects the drive member 1 which is intermittently rotatable to the eccentric disc 9. The eccentric disc 9 is rotatably supported in the crank rod 17 by a rolling bearing 8. As long as the connecting member 12 is connected, when the drive member 1 rotates 180 degrees in the direction of arrow 3, the crank rod 1
A pivot point (not shown) located on the longitudinal axis 18 of 7, moves parallel to the direction of the arrow 19 by the eccentric distance of the eccentric disc 9. The pivot point is connected to the heald or heald frame of the loom via a connecting rod (not shown), so that this heald or heald frame is rotated from the upper opening position after 180 degrees of rotation of the drive member 1. , To the lower position of the opening or vice versa. In this case, the drive member 1, the eccentric disc 9, the crank rod 17 and the above-mentioned pivot point are in each case in the dead center position, and the force acting on the pivot point (18) is directed toward the central axis 26 of the shaft 2. Alternatively, it is directed away from the central axis 26 of the shaft 2.

For the switching of the connecting member 12, there is a switching member 20 controllable according to the handle, which switching member 20 is constructed as a lever and is shown in phantom from the position 20 shown in solid lines in FIG. To the open position 20 ', in which case it is subjected to a force P which is oriented approximately on the longitudinal axis 18. Following the handle, the switching member 20 is again unloaded and returned to the starting position.

The connecting member 12 can move from the connecting position to the disconnecting position and vice versa only when the drive member 1 and the eccentric disc 9 which are intermittently rotatable are in the dead center position, and during the rotational movement of the eccentric disc 9. The controllable locking member 29 prevents the position change in the direction from the connecting position to the releasing position.
The crank rod 17 is provided with a switchable eccentric disc-lock pawl 22 which is loaded in the direction which causes the lock position. The connection member 12 and the lock member 29 are disconnected or unlocked by the eccentric disc-lock claw 22. The eccentric disc-lock pawl 22 can be controlled by the switching member 20 or by a second switching member 21 of the same type, which is on the side opposite to the first switching member 20.

The locking member 29 has a locking claw 23, and the locking claw 23 is an arm.
It is supported on the end of 15 and fixed to the shaft 24. Locking claw 23
Is spring loaded in the locking direction by a spring 33.

The eccentric disc 9 has two oppositely located stoppers 27, 28 which serve as lateral guides for the eccentric disc-lock pawl 22 in the locking position. Lock member 29 of connecting member 12
Is the stopper in the connecting and locking position shown in FIG.
It is between 27 and 28, and in this case, the locking claw 23 is locked to the rear side of the step portion 30. The locking member 29 is pushed out of the locking position by the eccentric disc-locking claw 22 which is in the locking position. The spring 7 is supported by the stopper 28. Eccentric disc-lock claw
22 is supported by the crank rod 17 so as to be rotatable about a rotation center point 31. The locking pawl 22 has for its operation an arm 32 which is spring loaded by tension springs 34,35. Due to the springs 34, 35, the eccentric disc-lock claw 22 is always loaded in the unlocking direction. The springs 34, 35 are suspended on the crank rod 17.

FIG. 1 shows a position where the connecting members 12 are connected and a switching member 20.
Is shown at a position away from the central axis 26 of the shaft 2. This state is, for example, a state when the upper side position of the opening is separated. This is because the further rotation of the drive member 1 in the direction of the arrow 3 causes the eccentric disc 9 to move together. However, when the switching member 20 is moved to the position 20 ', the eccentric disc-lock claw 22 moves to the position 2 between the stoppers 27 and 28.
Immediately after being locked to 2 ", the locking claw 23 moves to the position 23 ', the arm 15 moves to the position 15', and the connecting projection 10 moves to the position 10 '. The eccentric 9 is locked by this, and eccentric. Unintentional entrainment of the board 9 cannot be carried out, the dead center position, or the respective reached position, that is to say the upper opening position or the lower opening position is ensured by the eccentric disk-lock pawl 22.

When the coupling member 12 is again removed from the coupling position of FIG.
This is done by moving the switching member 20 approximately in the direction towards the longitudinal axis 18 by the action of the force P controlled by the handle while the is still moving.

The switching member is further pressed against the eccentric disc-lock claw 22 and pushes the lock claw toward the locking claw 23 after reaching the dead center position, whereby the locking claw 23 reaches the position 23 '. Simultaneous connection protrusion
The 10 pivots against the force of the spring 7 into the position 10 ', whereby a disconnection is achieved.

According to FIG. 2, a second switching member 21 is provided on the opposite side of the switching member 20 for switching control. By means of a parallel guide mechanism, not shown, it is possible, for example, to ensure that both switching elements 20, 21 are always in parallel and act in the same direction at the same time. The switching member 21 can be loaded by the force P '. The second eccentric disc-lock pawl 22 'is pivotally mounted on the crank rod 17 about the center of rotation 31' with respect to the first eccentric disc-lock pawl. Second eccentric disc-
The locking pawl has an arm 32 'which is spring loaded by its tension springs 34', 35 'for its operation. Spring 34 ', 3
Due to 5 ', the eccentric disc-lock pawl 22' is always loaded towards the unlocked position. The springs 34 ', 35' are suspended on the crank rod 17.

1 and 2 schematically show one embodiment,
FIG. 3 is a view showing a part of another embodiment showing a more concrete structure of the full scale.

The eccentric disc 9 has circular holes 38 and 39 for reducing the mass to be moved. The eccentric disc-arm 32 'of the locking pawl 22 is provided with a bending member as soon as the device is in the dead center position.
Overlay on 16. Therefore, the switching member 20 ″ is simultaneously connected to the connecting projection 10
Also serves to forcibly transfer or hold the connection position.

The eccentric disc-lock pawl 22 is always loaded in the locking direction by a tension spring 36 suspended on the crank rod 17 '.
The switching member 20 "has moved to a position which is close to the center axis 26, so that the eccentric disc-arm 32 'of the locking pawl 22 is swung against the force of the spring 36. The locking pawl 22 cannot reach the locking position, the connecting member 12 remains in the connected state accordingly. To disconnect the connecting member 12, the switching member 20 ″
However, it must be returned in the direction of arrow 37 so that the eccentric disc-lock pawl 22 can reach the locking position, in other words the uncoupling position of the connecting member 12, by the action of the tension spring 36.

With respect to the other parts, the embodiment of FIG. 3 has the same individual components as the embodiment of FIGS. 1 and 2.

In FIG. 3, the connecting member 12 is connected, and the eccentric disc 9 has not yet reached the dead center position. Locking claw 23 is spring 33
The connecting member 12 is locked by the action of. If the drive member 1 is stopped and then further rotated 180 degrees or an integral multiple of 180 degrees according to the handle, the drive member carries the eccentric disc 9 so that the crank rod 17 'correspondingly exchanges its position.

Furthermore, according to the present invention, clockwise movement in the direction of arrow 3 and counterclockwise driving in the direction opposite to the direction of arrow 3 are also possible.

In the third embodiment of the heald control device according to FIGS. 4 and 5, the ring-shaped drive member 1 is fitted into the shaft 2 in a non-rotatable manner, and the shaft 2 is driven by a drive device (not shown). It can be intermittently rotated by 180 degrees in the direction of arrow 3. After each 180 degree rotation, axis 2 briefly stops at the dead center position and then again.
Further rotate 180 degrees. The drive member 1 has two opposite cutouts 4, 5. Key 6 is axis 2
And the driving member 1 are connected so as not to rotate relative to each other.

The eccentric disc is mounted on the drive unit 1 via rolling bearings which are concentrically arranged with respect to the shaft 2 and which are covered and not visible in the drawing.
109 is rotatably supported. In this case the drive member 1
Partially overlaps with the eccentric disc 109.

The eccentric disc 109 has a pin 111, and this pin 111 has 2 pins.
A connecting member 112 in the form of an arm lever is pivotably mounted. The connecting member 112 has a claw shape. The connecting protrusion 110 fits in the notches 4 and 5. The connecting protrusion forms one end of the two-arm lever. The other end is formed by a leaf spring 115, which ends in a spring eye 107. The second, upwardly bent end 116 of the leaf spring 115.
Thus, the connecting member 112 is spring loaded so that the connecting member can engage one of the notches 4 and 5 of the drive member 1.

In the coupled state, the coupling member 112 couples the intermittently rotatable drive member 1 to the eccentric disc 109. Eccentric disc 109 is rolling bearing 10
It is rotatably mounted in the crank rod 117 by means of 8. As long as the connecting member 112 is connected, when the drive member 1 rotates 180 degrees in the direction of the arrow 3, the crank rod 117
The pivot point 118 of the eccentric disc 109 is parallel to the direction of the arrow 119.
Move by the eccentric distance of. The pivot point 118 is connected to the heald or heald frame of the loom via a connecting rod (not shown), so that this heald or heald frame is opened from the opening upper position after the drive member 1 is rotated 180 degrees. Transferred to the lower position or vice versa. In this case, the drive member 1, the eccentric disc 109, the crank rod 117, and the pivot point 118 are provided each time.
Is in the dead center position, and the force acting on the pivot point 118 is directed toward the central axis 126 of the shaft 2 or away from the central axis 126.

A switching member 120, which can be controlled according to the handle, is provided for switching the connecting member 112. The switching member 120 is designed as a lever, which can be moved from the position shown in FIG. 5 to the position shown in FIG. Be loaded. Following the handle, the lever 120 is unloaded again and returned to the starting position.

The coupling member 112 can be operated from the coupling position to the coupling release position and vice versa only when the intermittently rotatable drive member 1 and the eccentric disc 109 are in the dead center position.
A controllable locking member 129 prevents displacement in the direction away from the coupling position during the rotational movement of the. The crank rod 117 is provided with a switchable eccentric disc-lock pawl 122 which is loaded in the direction of the lock position. Connecting member 112
The locking member 129 can be disconnected or locked by the eccentric disc-lock claw 122. Eccentric disc-lock claw 12
The 2 can be controlled by the switching member 120 or by a second switching member 121 of the same type, opposite the first switching member 121.

The lock member 129 has a locking claw 123, which is a shaft 124.
Is fixed to the shaft, which also carries a switching lever 125. The shaft 124 is pivotally supported in the spring eye 107 of the connecting member 112. The locking claw 123 is spring-loaded by a spring 133 in the locking direction.

The eccentric disc 109 has two stoppers 127, 128 located opposite to each other for laterally guiding the eccentric disc-lock pawl 122 in the locking position. The locking member 129 of the connecting member 112 is located between the stoppers 127 and 128 at the connecting position and the locking position shown in FIG. 4, in which case the locking claw 123 is locked to the rear side of the protrusion. The locking member 129 is pushed out to the locking position by the switching lever 125 by the eccentric disc-locking claw 122 coming to the locking position.

Eccentric disc-Lock claw 122 is attached to crank rod 117 at the center of rotation.
It is rotatably supported around 131. Eccentric disc-
For its operation, the locking pawl has a switching arm 132 which has a spring action, which forms a spring loop. Due to the weak spring 134, the connecting member 112 is always spring-loaded in the direction toward the connecting position.

FIG. 5 shows the connecting member 112 in the uncoupled position and the switching member 120 in a position that is also remote from the central axis 126 of the shaft 2. This position is, for example, the upper opening position, but this position is maintained because the drive member 1 does not carry the eccentric disc 109 together in the direction of arrow 3. A spring 135 supported by the crank rod 117 pivots the switching arm 132 in a clockwise direction so that the eccentric-lock pawl 122 is locked between the stoppers 127,128. This allows the eccentric 1
The unintended transfer of 09 is prevented. The dead point position, that is, the position reached each time, that is, the opening upper position or the opening lower position is secured by the eccentric disc-lock claw 122.
The eccentric disc-lock pawl 122 pushes the locking member 129 out of the locking position, which also pushes it towards the spring eye 107, which holds the connecting member 112 in the disconnected position.

When the connecting member 112 is moved from the position shown in FIG. 5 to the reconnected position, the switching member 120 is controlled according to the handle and the force P is applied while the drive member 1 is still in motion. By action, it is once moved toward the central axis 126. The switching member 120 is pushed toward the switching arm 132, and the switching arm 13
2 presses against the end 116 of the leaf spring 115, and as a result the connecting projection 110
Are connected by spring action, as shown in FIG. In this case, the eccentric disc-lock claw 122 cannot reach the lock position, and accordingly, the locking claw 123 of the lock member 129 enters the locking position.

As soon as the drive member 1 reaches the dead center position or the stop-zero position, the connecting member 112 engages with one of the notches 4 or 5 and at the same time the locking member 129 automatically locks the connecting position. Be done.

For switching, the already mentioned second switching element 121 is provided on the opposite side of the switching element 120. By means of a parallel guide mechanism, not shown, it is possible, for example, to ensure that the two switching elements 120, 121 are always in parallel and are simultaneously operated in the same direction. The force P ′ can be applied to the switching member 121. On the opposite side of the first eccentric-rock locking pawl 122, a second eccentric-rock locking pawl 122 'is pivotally mounted on the crank rod 117 about a center of rotation 131'. For its operation, this second eccentric disc-lock pawl has a switching arm 132 'with spring action, which arm forms a spring loop.

In contrast to FIGS. 4 and 5, FIGS. 6 and 7 are views showing a part of another embodiment of the actual size having a more specific structure.

The return spring of the locking member 129 is in this case configured as a compression spring 133 '. The spring 134 is omitted. Protrusion 130
Is also omitted. The eccentric disc 109 has circular holes 136 and 137 in order to reduce the moving mass. A leaf spring 115 ′ having a spring eye 107 is added to the leaf spring 115. Otherwise, the embodiment of FIGS. 6 and 7 has the same components as the embodiment of FIGS. 4 and 5.

According to FIG. 6, the connecting member 112 is still in the connecting position,
The eccentric disc 109 has not yet reached the dead center position. The eccentric disc-lock pawl 122 is already moving in the direction that causes the lock position. Eccentric disc-lock claw In this case, switching lever 125
The locking claw 123 has already been released via the force of the spring 133 'via the spring eye 107, and after a short time, the spring eye 107 receives a corresponding load to release the connection of the connecting member 112 at an appropriate time. . When the coupling member 112 remains in the released state as shown in FIG. 7, the drive member 1 follows the handle without taking the eccentric disc 109 together, and an integer of 180 degrees or 180 degrees. It is rotated twice, so that the crank rod 117 is secured in that position.

According to the invention, a clockwise drive in the direction of arrow 3 and a counterclockwise drive in the opposite direction to the direction of arrow 3 are also possible.
Also, the invention is not limited to the illustrated embodiments.

[Brief description of drawings]

The drawings show four embodiments of the heald control device of the present invention. FIG. 1 shows the first embodiment of the heald control device in a connected state, and FIG. 2 shows the heald control device of FIG. Detailed view, FIG. 3 is a view showing a second embodiment of the heald control device in a connected state, FIG. 4 is a view showing a third embodiment of the heald control device in a connected state, and FIG. 5 is the same as the heald control. FIG. 6 is a diagram showing the device in a disconnected state, FIG. 6 is a diagram showing the fourth embodiment of the heald control device in a coupled state, and FIG. 7 is a diagram showing the heald control device in FIG. 6 in a decoupled state. is there. 1 ... Driving member, 2 ... Shaft, 4,5 ... Notch, 6 ... Key, 7 ... Spring, 8 ... Rolling bearing, 9 ... Eccentric disc, 10
...... Connecting protrusion, 11 ...... pin, 12 ...... connecting member, 15 ...... arm, 16 ...... bending member, 17,17 '...... crank rod, 1
8 …… Vertical axis, 20,20 ″ …… Switching member, 21 …… Switching member,
22,22 ′, 22 …… Eccentric disc-lock claw, 23 …… Locking claw, 24
…… Axis, 26 …… Center axis, 27,28 …… Stopper, 29 ……
Lock member, 30 ..., Step, 31 '... Center of rotation, 32' ...
Arm, 33 ... Spring, 34,35,34 ', 35' ... Tension spring, 3
6 ... Spring, 38,39 ... hole, 107 ... Spring eye, 109 ... Eccentric disc, 110 ... Coupling protrusion, 112 ... Coupling member, 115,115 ′
...... Leaf spring, 116 …… End, 117 …… Crank rod, 11
8 ... Pivot point, 120 ... Switching member, 122, 122 '... Eccentric disc-lock claw, 123 ... Locking claw, 124 ... Shaft, 125 ... Switching lever, 126 ... Central axis line, 127, 128 ... Stoppers, 129
...... Lock member, 130 ...... Protrusion, 131 ′ ... Rotation center point,
132,132 ′ …… Switching arm, 133,133 ′ …… Spring, 134,13
5 ... Spring, 136,137 ... hole

Claims (9)

[Claims] 1. A heald control device for a loom, comprising a drive member that is intermittently rotatable, the drive member having a notch, and being connected to the eccentric disc in the notch. A connecting member is connectable, the connecting member connecting an intermittently rotatable drive member to an eccentric disc, the eccentric disc being rotatably supported in a crank rod, the crank rod being operatively connected to the heddle. Type, the connecting member (1
2) is always receiving a load in the direction that creates the connecting position,
And, only when the drive member (1) and the eccentric disc (9), which are intermittently rotatable, are in the dead center position, it is possible to move from the connection position to the connection release position and from the connection release position to the connection position, and During the rotational movement of the eccentric disc (9), the controllable locking member (29) locks the position change in the direction away from the coupling position, and the crank rod (17; 1).
7 ') switchable eccentric disc-lock claw (22; 22'; 22)
And has a connecting member (12) and a locking member (2
9) can be uncoupled or unlocked by the eccentric disc-lock claw (22,22), and the eccentric disc-lock claw (22,22 '; 22) is controlled according to at least one handle. A heald controller for a loom, which is controllable by a switching member (20, 21; 20 ″). 2. A switching member (20, 21) controllable according to a handle.
The external force (P,
P ') is transmitted to the eccentric disc-lock claws (22, 22') and the force necessary for releasing the connection of the connecting member (12) is passed through the eccentric disc-lock claws (22, 22 '). It is transmitted to the connecting member (12) or its locking member (29) and, for this purpose, can be detached from the eccentric disc (9) and the connecting member (12) via the eccentric disc-lock claws (22, 22 '). A heald control device according to claim 1, operatively connected. 3. A switching member (20 ″) controllable according to a handle.
Transmits the force necessary for releasing the lock of the eccentric disc-lock claw (22) to the eccentric disc-lock claw (22), and at the same time resists the connecting member (12) against the force of the spring (7). Forming a counter-bearing for the connecting member (12), which holds it in the connecting position or forces it into the connecting position, and for this purpose disengages the eccentric disc-lock claw (22) and the connecting member (12); A heald control according to claim 1, wherein the heald control is operably connected. 4. The connecting member (12) is configured as a two-arm lever pivotally supported by an eccentric disc (9).
One end of the arm lever has a connecting protrusion (10),
And, the lock member (29) is pivotally attached to the other end and suspended, and the eccentric disc (9) is laterally guided to the eccentric disc-lock claw (22, 22 '; 22) in the lock position. To serve as two oppositely located stoppers (2
7,28) and at least the connecting member (1
The locking member (29) of 2) is located between the stoppers (27, 28) at the connecting position and the locking position, and is moved to the locking position by the eccentric disc-locking claws (22, 22 '; 22) from the locking position. Extruded, Claims 1 to 3
The heald control device according to claim 1. 5. A stopper provided on the eccentric disc (9) at a locking position of the locking member (29) having a spring-loaded locking claw (23). One of the (27) is supported, in which case the locking pawl is pivotable forward from the stopper (27) by the locking of the eccentric disc-lock pawl (22, 22 '; 22). The heald control device according to item 4. 6. A spring (34,35; 3) in which an eccentric disc-lock pawl (22,22 '; 22) is supported on a crank rod (17; 17').
Held control device according to any one of claims 1 to 5, which is spring loaded by 4 ', 35'; 36). 7. A switching arm (116,1) in which the connecting member (112) and / or the eccentric disc-lock claw (122,122 ') have a spring action.
32, 132 '). A heald control device according to any one of claims 1 to 6 having the features 32, 132'). 8. The heald control according to claim 1, wherein the connection member (112) is spring-loaded by a weak spring (134) in a direction in which the connection position is always generated. apparatus. 9. A heddle controller for a loom, comprising a drive member that is intermittently rotatable, the drive member having a notch, and a connection to the eccentric disc that is connected to the notch. A member is connectable, the connecting member connecting an intermittently rotatable drive member to an eccentric disc, the eccentric disc being rotatably supported in a crank rod, the crank rod being operatively connected to the heddle; In the type that has
2) intermittently rotatable drive member (1) and eccentric disc (1)
Only when 09) is in the dead center position, it is possible to move from the connection position to the connection release position and from the connection release position to the connection position, and the controllable lock member (during the rotational movement of the eccentric disc (109) ( 129), the change in position in the direction away from the connecting position is locked, and at least one switching member (120, 121) controlled according to the handle applies an external force required for the connecting to the connecting member (120). Switchable eccentric disc-lock pawl (12) that is capable of being transmitted to the crank rod (117) and is loaded in the direction that causes the lock position.
2, 122 ') are provided, and the coupling member (112) and the locking member (129) can be decoupled or unlocked by the eccentric disc-lock claw (122,122'), and the eccentric disc-lock claw (122,122 '). ) Is controllable by a switching member (120, 121), a heald control device for a loom.