JP2012117186A - Driving control device of flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving control device of a flat knitting machine, which can change a load according to the direction of rotating an operation bar by the use of one tension spring.SOLUTION: A driving control device includes a rotation member 6, a tension spring 7, and a relay member 8. A pull pin 6b of the rotation member 6 receives a rotation moment in a counterclockwise direction through the relay member 8 by tension of the tension spring 7. A tip end side of a notch portion 8c of the relay member 8 is abutted on a follower arm 10b to generate a rotation moment in a counterclockwise direction with respect to a lever 10. A push pin 6c of the rotation member 6 receives a rotation moment in a clockwise direction through a drive arm 10a. In a neutral state, the rotation moment in both directions are balanced in the rotation member 6. When an operation bar 2 is rotated, a load by the tension spring 7 is directly applied through the relay member 8 on an operation side, and applied through the relay member 8 and the lever 10 on a stop side. The load on the stop side can be reduced by setting a length of the drive arm 10a of the lever 10 to be longer than that of the follower arm 10b.

Description

  The present invention relates to a drive control device for a flat knitting machine for controlling the driving state of the flat knitting machine by manual operation.

  Conventionally, in a flat knitting machine that is automatically operated by setting a knitting program, a drive control device including an operation bar that is rotatably supported by brackets provided on both sides of the front face is used. (For example, see Patent Document 1). In the drive control device, the operation bar is rotated to control the drive state of the knitting operation. For example, when the operation bar is turned slightly forward from the neutral state where it is stationary and then returned to the neutral state, the inching control is performed so that the operation for one step is performed at a very low speed. When the operation bar is fully turned forward and released, automatic operation is performed, and even when the operation bar is returned to the neutral state, control is performed to perform continuous operation at a speed specified by the knitting program. If the operation bar is held in a state of being largely turned, control is performed so that continuous operation is performed at a lower speed than the designated speed. The operation is controlled to stop when the operation bar is turned backward.

  The operation bar is provided with a mechanism including two tension springs in order to apply a load against rotation. In Patent Document 1, two sets of a driving spring and a driving link member, and a stopping spring and a stopping link member are used in the mechanism provided at the end of the operation bar. By dividing the tension spring into two parts, for example, at the time of control for operation that is turned forward, the load applied by the operation spring is increased so that malfunction does not occur as long as the operation bar is touched. The load applied by the stop spring is kept small so that a quick stop is possible by operating the operation bar.

Japanese Patent No. 2602747

  When two tension springs are used as in Patent Document 1, a large housing space is required for the bracket that supports the end of the operation bar and the cover that covers the mechanism, which increases in size and increases the number of parts. Design is also constrained. Such a problem can be solved if one tension spring can be used, but if only one tension spring is used, it is not possible to provide a function of changing the load according to the direction in which the operation bar is rotated.

  An object of the present invention is to provide a drive control device for a flat knitting machine capable of varying a load in accordance with a direction in which an operation bar is rotated by using one tension spring.

The present invention includes an operation bar that is rotatably supported in a state of protruding to the front side with brackets provided on both sides of a flat knitting machine, and controls the driving state of the knitting operation according to the rotation operation with respect to the operation bar. In a drive control device for a flat knitting machine,
Provided at one end of the operation bar in the axial direction and rotated together with the operation bar, a pulling portion and a pressing portion projecting in the axial direction with an interval in the circumferential direction are arranged on the working surface perpendicular to the axial direction. A rotating member;
A tension spring whose base end is supported by a bracket and applies a load when the operation bar is rotated;
A relay member having a connection portion connected to the distal end of the tension spring on the proximal end side, and a long engagement portion that engages with the pull portion of the rotating member in a predetermined length range on the distal end side;
The drive arm and the follower arm having different lengths are provided and have a substantially L-shape, and the drive arm is separated from the pulling portion in the circumferential direction of the action surface with respect to the push portion on the action surface of the rotating member. The driven arm is disposed so as to extend toward an intermediate portion between the distal end side and the proximal end side of the relay member, and a support shaft that swingably supports is provided at a connection portion between the driving arm and the driven arm. Including a lever,
The intermediate part of the relay member has a notch part into which at least the tip part of the driven arm of the lever can enter,
By rotating in one direction with respect to the operation bar, the pulling portion of the rotating member pulls the long engaging portion of the relay member toward the one direction, and the relay member pulls the tension spring on the base end side,
By rotating in the other direction with respect to the operation bar, the pushing portion of the rotating member pushes the drive arm of the lever toward the other direction in the circumferential direction, and the driven arm becomes the rotating member by swinging around the support shaft of the lever. Displace in the approaching direction, move the relay member to the rotating member side through the notch, and pull the tension spring on the base end side,
This is a drive control device for a flat knitting machine.

Further, in the one-way rotation of the present invention, it is set so that a plurality of operating states with different speeds can be switched,
The rotation in the other direction is set so that the operation to the stop state is possible,
The lever has a length of the driving arm longer than the length of the driven arm,
It is characterized by that.

In the present invention, the relay member includes
Between the base end side and the cutout portion, a guide portion that regulates a moving range of the relay member is provided,
An interference prevention unit is provided that prevents interference with the pressing unit during rotation in the one direction.
It is characterized by that.

  According to the present invention, when the operation bar is operated so as to rotate to one side, the tension spring is pulled via the relay member. If the operation bar is operated so as to rotate to the other side, the tension spring is pulled by the movement of the relay member accompanying the swing of the lever. Even if the load by one tension spring is the same, the lengths of the drive arm and the driven arm of the lever are different. Therefore, when the other side is rotated with the lever interposed between the rotating arm and the relay member, the load is changed to a different load. be able to. Since it is not necessary to use multiple sets of tension springs and relay members to apply different loads, it is possible to reduce the size and the number of parts, and to increase the degree of freedom in designing the outer shape of the bracket and cover. it can.

  Further, according to the present invention, when operating to the stop state, the load of the tension spring is applied through the lever whose length of the driving arm is longer than the length of the driven arm, so that the load can be reduced. At the time of the operation for switching the operation state, the load of the tension spring is directly applied via the relay member. Therefore, the operable angle range can be widened to easily perform the switching operation of a plurality of operation states.

  Further, according to the present invention, the moving range of the relay member can be restricted by the guide portion, and the turning range of the operation bar can be restricted via the turning member. Even if the pusher moves to one direction in the circumferential direction and moves closer to the relay member when rotating in one direction, the interference prevention part is provided to avoid interference and guide part The rotation range can be ensured within the regulation.

FIG. 1 is a left side view showing a configuration of a drive control apparatus 1 as an embodiment of the present invention. FIG. 2 is a front view showing a simplified configuration of the drive control device 1 of FIG. FIG. 3 is a plan view of main components used in the drive control device 1 of FIG. FIG. 4 is a left side view of the rotating member 16 used in the drive control device 1 of FIG. 1 and a partial front sectional view showing a configuration near the left end of the operation bar 2 including the rotating member 16. FIG. 5 is a left side view schematically showing the operation state of the drive control device 1 of FIG.

  Hereinafter, a drive control apparatus 1 as an embodiment of the present invention will be described with reference to FIGS. However, regarding the present embodiment, in the description of each drawing, the parts described previously may be referred to by describing reference numerals not shown in the drawing.

  1 and 2 show a configuration of a drive control apparatus 1 as an embodiment of the present invention. The drive control device 1 includes an operation bar 2 that is rotatably supported in a state of projecting to the front side of the flat knitting machine, and the driving state of the knitting operation according to the rotation operation around the axis 2a with respect to the operation bar 2 Can be controlled. The operation bar 2 is supported by the brackets 3 and 4 at both ends in the direction of the axis 2a. One side surface of the bracket 3 is covered with a cover 5 indicated by a virtual line. On the side surface of the bracket 3, a rotating member 6 attached to the end of the operation bar 2, a tension spring 7 that generates a load, a relay member 8 that relays between the tension spring 7 and the rotating member 6, and a rotation A sensor 9 for detecting the rotation state of the moving member 6 is attached. The surface of the cover 5 is also provided with a stop button 1a for shutting off the power supply in an emergency or the like. Since only one tension spring 7 should be used, the bracket 3 for supporting at the front end of the flat knitting machine and the cover 5 covering the side surface should be miniaturized, and the degree of freedom in designing the outer shape should be increased. Can do.

  The rotating member 6 is provided at one end of the operation bar 2 in the direction of the axis 2a, and has a working surface 6a perpendicular to the direction of the axis 2a. A pulling pin 6b and a push pin 6c that protrude in the direction of the axis 2a are arranged on the working surface 6a with an interval in the circumferential direction. The detection piece 6d protrudes from the rotating member 6 to the back side of the working surface 6a. Although the pull pin 6b and the push pin 6c are separate from the rotating member 6 and are erected on the action surface 6a, a projecting member different from these pins can also be used. A rotating member such as a roller can also be used. Further, the protruding portion can be formed as a part of the rotating member 6.

  The base end of the tension spring 7 is supported by the bracket 3 on the support pin 3 a and applies a load when the operation bar 2 is rotated. The relay member 8 has a connection hole 8 a serving as a connection portion connected to the distal end of the tension spring 7 on the proximal end side, and a long hole 8 b that engages with the pulling pin 6 b of the rotating member 6 on the distal end side. The lever 10 includes a driving arm 10a and a driven arm 10b having different lengths and has a substantially L-shape. The drive arm 10a is arranged so as to extend to the side away from the pull pin 6b in the circumferential direction of the action surface 6a with respect to the push pin 6c on the action surface 6a of the rotating member 6. The driven arm 10b is disposed so as to extend toward an intermediate portion between the distal end side and the proximal end side of the relay member 8. A support shaft 11 is provided at a connecting portion between the driving arm 10a and the driven arm 1b so as to be swingable. An intermediate portion of the relay member 8 has a notch portion 8c into which at least the distal end portion of the driven arm 10b of the lever 10 can enter, and the movement range of the relay member 8 is restricted between the base end side and the notch portion 8c. A guide hole 8d is provided as a guide portion. A guide pin 12 supported by the bracket 3 is inserted through the guide hole 8d.

  The relay member 8 and the lever 10 can be formed with a certain thickness using a metal plate as a material. A retaining ring 15 is attached to the top portion of the guide pin 12 inserted through the guide hole 8d of the relay member 8 to prevent it from coming off. A flat washer 16 is provided on the front side of the relay member 8, and a flat washer is provided on the back side. 17 is mounted. The pull pin 6b inserted through the long hole 8b of the relay member 8 and the vicinity of the top of the support shaft 11 that supports the lever 10 also have the same configuration as the retaining ring 15 and the plain washers 16 and 17 for the guide pin 12.

  FIG. 3 shows the configuration of the relay member 8, the lever 10, and the sensor 9 that are main components used in the drive control device 1 of FIG. 1. The relay member 8 is also provided with an interference prevention notch 8e as an interference prevention portion for preventing interference with the push pin 6c when the operation bar 2 is rotated clockwise in FIG. The lever 10 is provided with a shaft hole 10c through which the support shaft 11 is inserted between the driving arm 10a and the driven arm 10b.

  Note that the notches and holes provided in the relay member 8 and the lever 10 are penetrated in the thickness direction in order to engage with convex portions such as pins, but when the thickness of the relay member 8 and the lever 10 is increased, It can also be set as the recessed part which has a bottom part in the middle of the thickness direction. However, the depth as the concave portion needs to be able to accommodate the convex portion to be engaged, and it is also necessary to prevent the retaining ring 15 and the plain washers 16 and 17 from coming off. Further, in order to engage with the rotating member 6, a convex portion such as a pin can be provided on the relay member 8 or the lever 10 side, and a concave portion can be provided on the rotating member 6 side. The part and the other may be a recess.

  The sensor 9 includes an inching position sensor 9a, a continuous position sensor 9b, a stop position sensor 9c, and a substrate 9d. The inching position sensor 9a, the continuous position sensor 9b, and the stop position sensor 9c are arranged on the surface of the substrate 9d so as to detect a state in which the detection piece 6d of the rotating member 6 is inserted in the intermediate portion.

  4A shows a left side configuration of the rotating member 6 used in the drive control device 1 of FIG. 1 in FIG. 4A, and FIG. 4B shows a configuration near the left end of the operation bar 2 including the rotating member 6 in FIG. A support portion 6e extending toward the end surface of the bracket 3 is provided on the back surface side of the working surface 6a of the rotating member 6, and a space is provided between the end surface of the bracket 3 and the tip of the detection piece 6d. The rotating member 6 is fixed to the end of the operation bar 2 by screwing a fixing screw 18 into the screw hole 6f.

  FIG. 5 shows a simplified operation state of the drive control device 1 of FIG. The upper row shows the driving side operation state 1A, the middle row shows the neutral state 1B, and the lower row shows the stop state 1C. At the tip position 7a of the tension spring 7 in the neutral state 1B, the tension spring 7 is most contracted.

  In the neutral state 1B, the detection piece 6d of the rotating member 6 is in an intermediate position that is not detected by either the inching position sensor 9a or the stop position sensor 9c. By pulling by the tension spring 7, the pulling pin 6 b of the rotating member 6 abuts on the distal end side of the long hole 8 b of the relay member 8 and generates a rotational moment in the counterclockwise direction with respect to the rotating member 6. . On the other hand, the front end side of the notch 8c comes into contact with the driven arm 10b, and generates a counterclockwise rotational moment with respect to the lever 10. The driving arm 10 a is in contact with the push pin 6 c of the rotating member 6 and generates a rotational moment in the clockwise direction with respect to the rotating member 6. In the neutral state 1B, the rotational moments in both directions with respect to the rotating member 6 are balanced.

  When the operation bar 2 is turned forward from the neutral state 1B, the rotating member 6 is rotated in the clockwise direction to be in the driving side operation state 1A. In the relay member 8, the long hole 8 b is pulled by the pull pin 6 b of the rotating member 6, and the tension spring 7 is also pulled by the connection hole 8 a to give a load to the operation. In the figure, a position where the detection piece 6d of the rotating member 6 is detected by both the inching position sensor 9a and the continuous position sensor 9b is shown. Since the guide pin 12 is in contact with the left end of the guide hole 8d, the clockwise rotation of the rotating member 6 reaches the upper limit and is restricted. Since the position detected only by the inching position sensor 9a before reaching the upper limit can be identified, the driving side can detect two positions. In the lever 10, the driven arm 10 b abuts on the proximal end side of the notch 8 c of the relay member 8 and swings clockwise, and the drive arm 10 a is separated from the push pin 6 c of the rotating member 6. Although the push pin 6c moves toward the relay member 8, since the interference prevention notch 8e is provided, no interference occurs.

  When the operation bar 2 is rotated backward from the neutral state 1B, the rotating member 6 rotates counterclockwise, and the stop state 1C is obtained. Since the push pin 6c of the rotating member 6 pushes the driving arm 10a of the lever 10 in the counterclockwise direction around the axis 2a, the lever 10 swings around the support shaft 11 in the clockwise direction. Since the driven arm 10b pushes the front end side of the notch 8c of the relay member 8, the relay member 8 moves in the same direction as the operation state 1A. Although the pull pin 6b moves in the direction opposite to that of the operating state 1A, the pull pin 6b does not interfere with the movement of the relay member 8 as long as the relay member 8 stays within the long hole 8b. That is, since the long hole 8b that engages with the pull pin 6b is a long engagement portion, the pull pin 6b is within the range of the length of the long hole 8b as the engagement length as the long engagement portion. 8 is not pushed toward the tension spring 7 side. By making the length of the drive arm 10a of the lever 10 longer than the length of the driven arm 10b, the extension amount of the tension spring 7 from the tip position 7a in the neutral state 1B is reduced, and the operation bar 2 is rotated. Can be made lighter in the stop state 1C than in the driving side operation state 1A.

  As described above, the lever 10 does not act when the operation bar 2 is turned to the driving side, but acts when the operation bar 2 is turned to the stop side. However, if the driven arm 10b is made longer than the driving arm 10a of the lever 10 and the positional relationship between the relay member 8 and the lever 10 is reversed in the vertical direction in FIG. 5, the lever 10 acts on the driving side, It is possible to prevent the lever 10 from acting on the stop side.

DESCRIPTION OF SYMBOLS 1 Drive control apparatus 2 Operation bar 3, 4 Bracket 6 Rotating member 6a Action surface 6b Pull pin 6c Push pin 7 Tensile spring 8 Relay member 8a Connection hole 8b Long hole 8c Notch 8d Guide hole 8e Interference prevention notch 9 Sensor 10 Lever 10a driving arm 10b driven arm 11 support shaft

Claims (3)

Brackets provided on both sides of the flat knitting machine are provided with an operation bar that is pivotably supported in a state of projecting to the front side, and the drive state of the knitting operation can be controlled according to the rotation operation with respect to the operation bar In a flat knitting machine drive control device,
Provided at one end of the operation bar in the axial direction and rotated together with the operation bar, a pulling portion and a pressing portion projecting in the axial direction with an interval in the circumferential direction are arranged on the working surface perpendicular to the axial direction. A rotating member;
A tension spring whose base end is supported by a bracket and applies a load when the operation bar is rotated;
A relay member having a connection portion connected to the distal end of the tension spring on the proximal end side, and a long engagement portion that engages with the pull portion of the rotating member in a predetermined length range on the distal end side;
The drive arm and the follower arm having different lengths are provided and have a substantially L-shape, and the drive arm is separated from the pulling portion in the circumferential direction of the action surface with respect to the push portion on the action surface of the rotating member. The driven arm is disposed so as to extend toward an intermediate portion between the distal end side and the proximal end side of the relay member, and a support shaft that swingably supports is provided at a connection portion between the driving arm and the driven arm. Including a lever,
The intermediate part of the relay member has a notch part into which at least the tip part of the driven arm of the lever can enter,
By rotating in one direction with respect to the operation bar, the pulling portion of the rotating member pulls the long engaging portion of the relay member toward the one direction, and the relay member pulls the tension spring on the base end side,
By rotating in the other direction with respect to the operation bar, the pushing portion of the rotating member pushes the drive arm of the lever toward the other direction in the circumferential direction, and the driven arm becomes the rotating member by swinging around the support shaft of the lever. Displace in the approaching direction, move the relay member to the rotating member side through the notch, and pull the tension spring on the base end side,
A drive control device for a flat knitting machine. In the rotation in the one direction, it is set so that a plurality of operation states with different speeds can be switched,
The rotation in the other direction is set so that the operation to the stop state is possible,
The lever has a length of the driving arm longer than the length of the driven arm,
The drive control apparatus for a flat knitting machine according to claim 1. In the relay member,
Between the base end side and the cutout portion, a guide portion that regulates a moving range of the relay member is provided,
An interference prevention unit is provided that prevents interference with the pressing unit during rotation in the one direction.
The drive control device for a flat knitting machine according to claim 1 or 2,

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