JPH0324619Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an intermittent rotation device for a knitting machine, and in particular, prevents reversal of the gear until the initial period when the intermittent rotation shaft and the gear for preventing reversal are rotated in one direction. In addition, the gear is mechanically linked with the rotation of the feed pawl to prevent the gear from reversing.

(Prior Art) In a knitting machine, a mechanism for intermittently rotating in one direction a rotating shaft inserted through the center of a cam cylinder that controls the protrusion and retraction of the butt of a knitting needle or a sinker needle connected to the knitting needle onto the needle bed. There are various configurations. For example, as shown in Fig. 7, a ratchet wheel b is fixed to an intermittent rotating shaft a, and a back-rotation prevention pawl d, which is pivotally supported by the action of a spring, is fixed around the ratchet wheel b. A rod h engages with a lock tooth c inclined in the direction, and performs a fixed amount of reciprocating motion in the direction of the solid line and the arrow on the feed piece g, which is fitted into the boss part f of the ratchet wheel b and connected via a one-way clutch. When the rod h moves in the direction of the solid line, the feed piece g is rotated by one clutch to rotate the ratchet wheel b and the intermittent rotating shaft a clockwise, and the rod h moves back in the direction of the dotted line. When , the anti-reverse claw d
The mechanism is such that the ratchet wheel b is locked and only the feed piece g is rotated in the reverse direction. However, in the above case, when the ratchet wheel b and the intermittent rotating shaft a are intermittently rotated clockwise by the feed piece g, the inertia thereof may cause inertial rotation that exceeds the momentum of the rod h in the direction of the actual arrow. It has the disadvantage of disrupting the organization operation.

In addition, Japanese Patent Publication No. 39-22436 discloses a configuration in which an intermittent rotating shaft is rotated intermittently, but it is an essential component to form a cam on the positioning rod. The present invention provides a structure that allows the required intermittent rotation of the knitting machine to occur without the need for such a cam.

(Problems to be solved by the invention) The invention creates a mechanical relationship between the movement of the feed pawl and the reverse prevention pawl by the amount of reciprocating movement of the rod,
The objective is to make the operation simple and accurate.

(Means for Solving the Problems) The present invention aims to specifically solve the problems mentioned in the previous section. A gear 10 is supported on a shaft 20 around the gear 10, and a spring 21 engages the reverse prevention pawl 18 at one end with the gear 10, and flips up the disengagement arm 19 at the other end. A lock lever 17, a bracket 13 in which the ring portion 14 is loosely fitted onto the rotating shaft 5 and connected to an intermittent operating rod 15 to reversibly rotate between a first position and a second position; The shaft 23 is fitted at a position closer to the axis of the gear 10 than the shaft 20, and is engaged with the gear 10 by the elasticity of the spring 24, so that when the bracket 13 rotates from the first position to the second position, the shaft 23 is locked with the lock lever. The disengagement arm 17 of 17 is mounted on the upper corner 19a of the free end and held down, and the anti-reverse claw 18 is released from the gear 10, and the gear 10 is rotated in conjunction with the return rotation to the first position, and the shaft 23 is engaged. An intermittent rotation device for a knitting machine characterized by being provided with a feed pawl 22 that engages a reversal prevention pawl 18 between the teeth of the gear 10 at the same time when it is released from the pressure of the uncoupling arm 19. It is.

A preferred embodiment of the present invention will be described next.

(Embodiment) FIG. 3 shows an example of a flat knitting machine, in which a needle bed frame 3 is slidably fitted onto a guide shaft 2 which is passed horizontally between both sides of a knitting machine frame 1. A cam cylinder 4 that projects the butt of a knitting needle, etc. by rotation.
One end of the intermittent rotating shaft 5 passed through the center of the needle bed frame 3 is rotatably supported, and the other end of the intermittent rotating shaft 5 is connected to the needle bed frame 3.
It protrudes from the side part of the knitting machine frame 1 and freely slides through one side plate 7 of the knitting machine frame 1 to protrude.

A spline 6 is provided on the intermittent rotating shaft 5 from the vicinity of the portion passing through the side plate 7 to the end thereof.

A mounting plate 8 is fixed to the outer surface of the side plate 7 and loosely inserts the spline 6 of the intermittent rotation shaft 5, and the shaft is supported by passing the outer periphery of the spline 6 of the intermittent rotation shaft 5 through the mounting plate 8. The support piece 9 is attached, and a gear 10 having 40 teeth is fitted and fixed to the intermittent rotating shaft 5 by an outer spline 11 that engages with the spline 6, and a bracket 13 is attached to the boss portion 12 of the gear 10. The ring part 14 of the bracket 13 is fitted in a rotatable manner, and the rod 15 is connected to the bracket 13.

A shaft supporting protrusion 16 is fixed to the mounting plate 8, and a reversal prevention pawl 18 is provided on the protruding end surface of the protruding piece 16 to fit tightly between the teeth of the gear 10 and come out, and the other end is disengaged. The central part of the F-shaped lock lever 17 provided with an arm 19 is supported by a shaft 20, and a pull-up spring 21 is attached to the shaft support protrusion 16 and the disengagement arm 19.
Multiply both ends of. The disengagement arm 19 is provided with a substantially perpendicular guide surface from the upper corner 19a of the free end. The bracket 13 has a lock lever 17 with one end of which is fitted between the teeth of the gear 10 by the elasticity of a spring 24, and has a shaft 23 of a feed pawl 22 that engages and disengages.
The shaft 20 of the gear 10 is fitted at a position closer to the axis of the gear 10 than the shaft 20 of the gear 10. The bracket 13 is reversibly rotatably moved between the first position shown in FIG. 1 and the second position shown in FIG. When the reversal prevention pawl 18 is in the non-pressing released state, the gear 1
Set the positional relationship to engage 0. lock lever 17
When the disengagement arm 19 is pressed by the shaft 23, a reversal occurs that causes the reversal prevention pawl 18 to escape from engagement with the gear 10.

The lower end of the rod 15 is passed between a pair of shaft support arms 25 attached to the side plate 7 below the mounting plate 8, and is pivotally connected to a lever 27 of a shaft 26 whose one end protrudes outward. A drive lever 28 is attached to the Y-shaped swing arm 2 via a link.
Connect to 9. 30 is the axis of the Y-shaped swing arm 29. As shown in FIG. 6, the Y-shaped portion of the swing arm 29 has a one-way rotation clutch (not shown) attached to the shaft 31.
Insert the eccentric cam 32 fitted through the cam 3
2 is provided with a disk portion 33 centered on the shaft 31, a stopper 34 is provided at one location of the disk portion 33, and the solenoid is energized by a signal instructing intermittent rotation of the intermittent rotation shaft 5. The bracket 13 is stopped at the first position in FIG. 1 via the rod 15 etc. at the angle at which the stopper 34 abuts against the ram 36 of the bracket 35 and the eccentric cam 32 is stopped. When the ram 36 is retracted by energizing the solenoid 35, the eccentric cam 3
2 is rotated by the one-way clutch and the bracket 1
3 is moved to the second position and immediately returned to the first position, during which time the solenoid 35 is de-energized, the ram 36 is advanced to the position where it hits the stopper 34, and the eccentric cam 32 that has rotated once is stopped again. It is configured.

(Function) When the bracket 13 and the rod 15 are stopped at the first position shown in FIG. Feed claw 2
2 fits between another tooth of gear 10 by the action of spring 24, making gear 10 and rotating shaft 5 irreversible.

When the rod 15 performs an upward movement to the second position, the bracket 13, which is concentric with the gear 10, moves into the second position.
At the beginning of the rotation, the shaft 23 that supports the feed pawl 22 on the bracket 13 at a position closer to the axis of the gear 10 than the shaft 20 of the lock lever 17 releases the disengagement arm 19. The lock lever 17 moves in an arc in the direction of the upper surface and eventually hits the guide surface and presses the vicinity of the upper corner 19a of the disengagement arm 19.
8 out of engagement between the teeth of gear 10. The feed claw 22 moves the gear 10 and the rotating shaft 5 by one tooth pitch of the gear 10 by disengaging and disengaging the reversal prevention claw 18 as described above. (See FIG. 5) (FIG. 4 shows the state immediately before the reversal prevention pawl 18 is released).

On the other hand, at the final stage when the shaft 23 rides on the disengagement arm 19 and moves in the rotational direction, the feed pawl 22 is moved by the spring 2.
4 and slips off the teeth 10a of the gear 10, interrupting the feeding of the gear 10 and the rotating shaft 5.
(Figure 4 shows just before escape).

When the bracket 13 is rotated back to the first position by the rod 15, the moment the shaft 23 falls from the upper corner 19a of the disengagement arm 19 into the guide surface,
The feed pawl 22 is caused to fit between the teeth of the gear 10 by the spring 24, and the gear 10 and the rotating shaft 5 are rotated in conjunction with each other by one tooth of the gear 10, and then the disengagement arm 19 of the shaft 23 is rotated. As the pressing is released (described above), the lock lever 17 continues to move back from the reversal by the spring 21, and the reversal prevention pawl 18 continues to fit between the teeth of the gear 10, thereby locking the gear 10 and restraining its rotation.

(Effects) The present invention includes a locking gear 10 fitted on a required rotating shaft 5 of a knitting machine, and a shaft 20 around the gear 10.
The anti-reverse claw 18 at one end is supported by a spring 21.
is engaged with the gear and flips up the disengagement arm 19 at the other end, and the ring portion 14 is loosely fitted onto the rotating shaft 5 and connected to the intermittent operating rod 15 to set the lock lever 17 to the first position. a bracket 13 that is reversibly rotated to a second position;
The gear 10 is connected to the shaft 20 of the lock lever 17.
Fit the shaft 23 at a position close to the axis of the spring 2
When the bracket 13 rotates from the first position to the second position, the shaft 23 rides on the upper corner 19a of the free end of the disengagement arm 19 of the lock lever 17 and is held down. At the same time, the anti-reverse pawl 18 escapes from the gear 10 , the teeth of the engaged gear 10 slide, and the gear 10 rotates in conjunction with the return rotation to the first position, and the shaft 23 releases the disengagement arm 19 . A feed pawl 22 is provided which engages the reversal prevention pawl 18 between the teeth of the gear 10 at the same time when the pressure is released.
A feed pawl 22 is mechanically supported by a bracket 13 that rotatably moves concentrically with the gear 10 between a first position and a second position. Since the rotational movement of the bracket 13 to the two positions can be controlled, the required intermittent rotation of the intermittent rotation shaft 5 of the knitting machine can be controlled.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the present invention, where Figure 1 is a front view in the first position, Figure 2 is a perspective view, Figure 3 is a view of the knitting machine frame 1 seen from the front of the work, and Figure 4. 5 is a front view of the bracket 13 being moved from the first position to the second position, FIG. 5 is a front view of the second position, FIG. 6 is a side view of the interlocking mechanism, and FIG. 7 is an example of the conventional device. FIG. ...First position, ...Second position, 5...Intermittent rotating shaft, 8...Mounting plate, 10...Gear, 13...
Bracket, 15... Rod, 17... Lock lever, 18... Reverse prevention claw, 19... Engagement release arm, 19a... Upper corner, 22... Feed claw, 23...
…shaft.

Claims (1)

[Scope of utility model registration request] A gear 10 for preventing rotation is fitted onto a required rotating shaft 5 of the knitting machine, and a shaft 20 around the gear 10 is pivotally supported, and a reversal prevention pawl 18 at one end is engaged with the gear 10 by a spring 21. , an F-shaped lock lever 17 that flips up the disengagement arm 19 at the other end, and a ring portion 14 that is loosely fitted onto the rotating shaft 5 and connected to an intermittent actuating rod 15 to be reversible between the first position and the second position. A rotating bracket 13 and the bracket 13
The gear 10 is connected to the shaft 20 of the lock lever 17.
Fit the shaft 23 at a position close to the axis of the spring 2
When the bracket 13 rotates from the first position to the second position, the shaft 23 rides on the upper corner 19a of the free end of the disengagement arm 19 of the lock lever 17 and is held down. , the reverse prevention pawl 18 escapes from the gear 10, and the first
The gear 10 is rotated in conjunction with the return rotation to the position,
Intermittent rotation of a knitting machine characterized by being provided with a feed pawl 22 that engages the reversal prevention pawl 18 between the teeth of the gear 10 at the same time when the shaft 23 is released from the pressure of the disengagement arm 19. Device.