JPH0640613Y2 - Knitting yarn switching device in sock knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a knitting yarn switching device in a sock knitting machine.

[Conventional technology]

When knitting socks, different yarns are used in each part of the sock, or it is common to switch and feed a plurality of types of yarns in order to produce a handle.

In the conventional example shown in FIG. 3, the yarn path for guiding the yarn to the needle is mechanically switched.

When knitting is performed in the cylinder 1, a plurality of yarn paths 2 through which various kinds of yarns respectively face the cylinder 1 and stand by in order to feed a needle (not shown), which is necessary for knitting. A yarn path 2 having a predetermined thread is selected, and the yarn path 2 which has been fed up to the yarn feeding position is withdrawn. Stop.
The switching of the yarn paths 2 is performed by operating the yarn path operating levers 3 connected to the respective yarn paths 2 by the operation of the yarn path operating cams 4 to advance and retract the predetermined yarn paths 2 with respect to the cylinder 1. That is, in the yarn path actuating cam 4, the feed claws 5 which are rocked by a crank motion (not shown) meshes with the rack wheel 6 integrated with the yarn path actuating cam 4. The feeding claws 5 are provided in the number corresponding to each yarn path.
Then, which yarn path is to be moved depends on the height of the chain 8 (Fig. 5) hanging on the chain wheel 7, and the chain lever 9 is swung to move the selector bar via the lever 10, rod 11 and lever 12. Slide 13 Selector bar
A groove 14 is cut on the upper edge of the feed claw 13, and the feed claw 5 that has fallen into the swing motion time groove 14 of the feed claw 5 itself engages with the rack wheel 6, and the feed claw 5 has In accordance with the swinging motion, the feed claw 5 that has fallen into the groove 14 engages with the rack wheel 6, rotates the yarn path actuating cam 4 as described above, and advances the yarn path 2 into the cylinder 1.

According to the yarn path selecting means as described above, the position of the mountain of the chain 8 has to be changed when the pattern of the knitted fabric is changed or when the yarn selection is changed. It becomes manual work, and the work efficiency is extremely reduced.

[Problems to be solved by the device]

In view of the above points, the present invention has an object to eliminate the chain operation for rod operation for moving the selector bar of the thread switching device.

[Means for Solving the Problems]

A feed claw that engages with a rack wheel provided integrally with the yarn path actuating cam, which is coaxial with the yarn path actuating cam that contacts the actuating lever connected to the yarn path, is provided so as to reciprocate and swivel. A selector bar having a claw engaging groove is provided reciprocally at a position where it engages with the tip portion of the feed claw, and when the feed claw moves downward and engages in the feed claw engaging groove, the feed In the knitting yarn switching device in which the pawl engages with the rack wheel and the reciprocating motion of the feed pawl rotates the yarn path actuating cam through the rack wheel to move the yarn path toward and away from the cylinder, the end of the separator bar A rack is provided, the gear of the output shaft of the pulse motor is engaged with the rack, and the separator bar is reciprocated by the rotation of the pulse motor.

〔Example〕

An embodiment of the device of the present invention will be described below with reference to the drawings. The same parts as those of the conventional example will be described with the same reference numerals as those of the conventional example.

At a position close to the needle head of the cylinder 1 in which needles (not shown) are inserted in needle grooves provided at an equal pitch on the outer peripheral surface,
A plurality of yarn paths 2 are provided. Each yarn path 2 is connected to the top of an operating lever 3 which is pivotally supported. A yarn path actuating cam 4 is in contact with the actuating lever 3. The yarn path actuating cam 4 is fixed integrally with the rack wheel 6 and is coaxially supported. The number of yarn path actuating cams 4 and the number of rack wheels 6 are provided corresponding to the number of yarn paths. The feed claw 5 engages with the rack wheel 6. The feed pawl 5 is supported so as to be rotatable and reciprocally movable. When the feed pawl 5 pivots and lowers its tip, it comes into contact with the selector bar 13. Selector bar
13 is swingably supported in a direction intersecting with the heads of a plurality of rows of feed claws 5, and a feed claw engagement groove 14 is provided at the upper edge of the selector bar 13. When the feed claw 5 that has swung is aligned with the groove 14, the feed claw 5
Swivel downward as much as possible, and the feed pawl 5 moves to the rack wheel 6
Engage with. Depending on the sliding position of the selector bar 13, the feed claw 5 and the feed claw engagement groove 14 do not coincide with each other, the feed claw 5 cannot be completely swung, and the feed claw 5 and the rack wheel 6 are not engaged with each other. Does not happen. At this time, the rack wheel 6 does not rotate even if the feed claw 5 reciprocates.

The selector bar 13 is supported by a mechanism (not shown), but as shown in FIG. 2, the rack 17 is fixed to the end thereof, meshes with the gear 16 of the pulse motor 15, and the rotation of the pulse motor 15 causes the selector bar 13 to rotate. Is reciprocated to a predetermined position.

The pulse motor 15 is given a pulse determined by an instruction from an encoder (not shown) and a controller, and rotates the gear 16 by a necessary amount according to the number of pulses, thereby rotating the gear 16.

[Effect of device]

The device of the present invention reciprocates and swivels a feed pawl that is coaxial with a yarn path actuating cam that contacts an operating lever connected to the yarn path and that engages with a rack wheel provided integrally with the yarn path actuating cam. A selector bar that is freely provided and has a feed claw engagement groove
Reciprocatingly provided at a position that engages the tip of the feed claw,
When the feed pawl is pivoted downward and is engaged in the feed pawl engagement groove, the feed pawl is engaged with the rack wheel, and the reciprocating movement of the feed pawl rotates the yarn path actuating cam through the rack wheel. In a knitting yarn switching device that moves the yarn path toward and away from the cylinder,
A rack is provided at the end of the separator bar, the output shaft gear of the pulse motor is engaged with the rack, and the separator bar is reciprocated by the rotation of the pulse motor. , It is no longer necessary for the operator to perform the chain operation in order to show the pattern or pattern of the knitted fabric.

[Brief description of drawings]

1 is a plan view of the device of the present invention, FIG. 2 is a perspective view of a pulse motor and a separator bar of the device of the present invention, and FIGS. 3 to 4 are commonly used by the device of the present invention and a conventional device. FIG. 3 is a side view of the yarn guide operation, FIG. 4 is a side view of the feed claw, FIG. 5 is a side view of the selector bar, and FIG.
FIG. 7 is a plan view of a conventional device, and FIG. 7 is a side view of a lever-related mechanism of the conventional device. 1 ... Cylinder, 2 ... Thread path, 3 ... Actuating lever, 4 ... Thread path actuating cam, 5 ... Feed claw, 6 ... Rack wheel, 13 ... Selector bar, 14 ... Feed claw engagement Groove, 15 …… Pulse motor, 16 …… Gear, 17 …… Rack

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A feed pawl that is coaxial with a yarn path operating cam that abuts an operating lever connected to the yarn path and that engages with a rack wheel provided integrally with the yarn path operating cam, reciprocates and swivels. A selector bar, which is freely provided and has a feed claw engaging groove, is reciprocally provided at a position where it engages with the tip portion of the feed claw, and the feed claw moves downward and engages in the feed claw engaging groove. In this case, in the knitting yarn switching device, the feed claw engages with the rack wheel, and the reciprocating motion of the feed claw rotates the yarn path actuating cam through the rack wheel to move the yarn path toward and away from the cylinder. A yarn switching device in a sock knitting machine, wherein a rack is provided at an end of the bar, a gear of an output shaft of a pulse motor is meshed with the rack, and a separator bar is reciprocated by rotation of the pulse motor.