JPS626149Y2 - - Google Patents

Description

[Detailed description of the invention] The stitch adjustment device for a flat knitting machine of this invention is a device that adjusts the amount of action of the stitches that determine the retraction amount of the knitting needles that determine the size of the stitch loop in the flat knitting machine. Then, using a stepping motor for the starting force,
By moving a plate cam with an inclined surface,
In addition to fine-tuning the power level with high precision by raising and lowering the power level appropriately, each time the carriage moves from side to side,
Preventing changes in the size of the ridges, and
This device is compatible with knitting machines of different gauges without changing the rotation angle of the stepping motor.

This will be explained with reference to the drawings.

Figure 1 is a front view of the main plate of the knitting machine, Figure 2 is the front view of the main plate of the knitting machine.
3 is a front view of the dowel lifting device, FIG. 4 is a side view thereof, and FIGS. 5 and subsequent figures are exploded slope views of parts of the dowel lifting device.

Reference numeral 1 designates the base plate of the knitting machine, in which a pair of long holes 2, 2 are provided in a V-shape, and members to be described later are fitted into the long holes 2, 2, respectively, but they are symmetrical to each other. They are different in that they are the same, but otherwise they are the same.
The description will be given using the same reference numerals. A sliding piece 3 that moves along the long holes 2, 2 is fitted into the long holes 2, 2, a back plate 4 is placed on the top surface of the sliding piece 3, a thread 5 is placed on the bottom surface of the sliding piece 3, and these three pieces are pinned together. The studs 6 and 6 are joined together, and the studs 7 are then planted thereon. A spring 1 is installed between the hanging pin 8 placed on the back plate 4 and the hanging pin 9 on the main plate 1.
Multiply by 0 to keep stud 7 on a downward trend.

The studs 7, 7 are supported by a horizontal bearing surface 11' on an upper plate cam 11.
The upper plate cam 11 is supported so as to be movable up and down by a case 13 having guide protrusions 12 on the left and right sides. The upper plate cam 11 has an inclined sliding surface 11" on its side, which engages with an inclined sliding surface 14' provided on the lower plate cam 14.
The lower plate cam 14 is provided with a rack 16, which is supported by a rack case 15 so as to be able to move horizontally by fitting the rack 16 into a groove 15' of the rack case 15. A pinion 17 is engaged with the rack 16, and its shaft is integrated with the motor shaft of a stepping motor 18.

When it becomes necessary to adjust the size of the stitches, the stepping motor 18 is rotated appropriately clockwise or counterclockwise, and the gear 17 and rack 16 are adjusted.
to move the lower plate cam 14 left and right. Then, the upper plate cam 11 mounted on it is lowered or raised, and the stud 7 mounted on the bearing surface 11' of this plate cam is moved appropriately in any direction to raise and lower the height and adjust the height. .

When the second adjustment is completed and the carriage is to be transferred, the leading height is raised by a leading height raising mechanism (not shown) so that it does not interfere with formation. At this time, the stud 7 of the leading bolt is separated from the bearing surface 11' of the upper plate cam 11, and the stud 7 of the trailing bolt comes into contact with the bearing surface 11'. When the carriage is inverted, the stud 7 of the leading bolt comes into contact with the bearing surface 11', and the stud of the trailing bolt moves away from the front surface 11' (contrary to the above). ). When the above-mentioned carriage is moved from side to side, the studs alternately rise and fall, but the upper plate cam 11 is not moved unless the position is changed and is always in the fixed position. Even when the stud moves up and down, the stop position of the downward movement is the contact position with the bearing surface 11', which remains constant. Therefore, there is no possibility of a change in pitch due to a change in the stop position of the stud.

Further, by changing the inclination angles of the inclined sliding surfaces 11'' and 14' of the upper plate cam 11 and the lower plate cam 14, the length of vertical movement of the upper plate cam 11 during one step rotation of the step motor can be changed. Therefore,
Even if there are multiple types of knitting machines with different gauges, it can be applied to each knitting machine by simply changing the cam plate, so there is no need to prepare multiple pulse motors with different step angles for stitch adjustment.

A stepping motor is a motor that rotates by a fixed angle in response to input pulse signals, and if one that rotates by 1.8 degrees with one input pulse is used, it will rotate by 9 degrees with 5 pulses input. Therefore, for example, the inclination angle of the slope surface should be set to 5 degrees 30
If the pinion gear is 1M and the number of teeth is 20, then one rotation (360
degree), the easy advance is 62.832 mm, the vertical movement of the upper plate cam 12 is 6.050 mm, and 1 pulse, or gear 1/2
Fine adjustment of 0.03mm is possible at 00 rotations.

In this way, since the stepping motor can arbitrarily select the rotation direction and rotation angle, it is possible to select the movement distance and direction of the stepping motor at will, and compared to the case of using a mechanical device. Fine adjustment with several orders of magnitude higher precision can be achieved.

In addition, in the device of the present invention, the left and right studs are supported by a common bearing surface, and the position of the bearing surface does not change once the position has been determined, so that when the carriage is moved to the left and when it is moved to the right. No change in degree occurs at all.

Further, by changing the inclination angle of the inclined sliding surfaces of the upper plate cam and the lower plate cam, the heap changing device can be made compatible with knitting machines of various gauges without changing the step angle of the step motor.

[Brief explanation of drawings]

Figure 1 is a front view of the main plate of the knitting machine, Figure 2 is a sectional view along the line shown in Figure 1, Figure 3 is a front view of the dowel lifting device, Figure 4 is a side view of the same, and Figure 5 to 8th
The figure is a parts diagram of the dowel lifting device, and FIG. 9 is an operational diagram of the dowel lifting device. 1... Main plate, 2... Long hole, 3... Sliding piece, 4...
... Back plate, 5 ... Dowel, 6 ... Pin, 7 ... Stud, 8, 9 ... Hanging pin, 10 ... Spring, 1
1...Top plate cam, 11'...Bearing surface, 11''...Slanted sliding surface, 12...Guiding convex edge, 13...Case, 1
4... Lower plate cam, 14'... Inclined sliding surface, 15...
...Rack case, 15'...Groove, 16...Rack, 17...Gear, 18...Stepping motor.

Claims (1)

[Scope of utility model registration request] The lower plate cam, which has a lug that meshes with the gear rotated by the stepping motor, and the upper plate cam are brought into contact with each other by inclined sliding surfaces provided on each plate cam, and the lower plate cam is rotated by the rotation of the stepping motor. The upper plate cam was made to slide left and right, and the upper plate cam was slidable up and down.The upper plate cam was slidably supported in a long groove by a horizontally extending linear bearing surface on the upper plate cam, and biased in one direction by a spring. A stitch adjustment device for a flat knitting machine that supports studs provided on the left and right stitches.