JPH04136247A - Device for changeover operation of stitch cam in flat knitting machine - Google Patents

Abstract

PURPOSE:To control left and right cam stitches simply by the extent of rotation of a specific annular grooved cam rotated with a motor by operating the left and right cam stitches through a pair of rocking pieces, fitted and engaging with the aforementioned annular grooved cam provided in a rotating disk. CONSTITUTION:A tumbler-shaped annular grooved cam 8 of a small circular arc groove (8a) continuous to eccentric grooves (8b) and (8b) is formed in a rotating disk rotating by a prescribed extent on a signal to a driving motor. Both ends of the groove (8a) are taken as basic positions (a) and (a'). One end each is fitted and engaged with the basic positions (a) and (a') so that a pair of rocking pieces 10 and 11 having the base ends (10b) and (11b) supported on shafts at symmetrical positions may be an interlocking mechanism with left and right cam stitches 2 and 2. The extent of stitch can be regulated with the grooves (8b) while keeping the other cam stitch in an inoperative state with the groove (8a).

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device that uses a pulse motor or a stepping motor as a drive source to adjust the amount of steering and notch of the left and right crests.

(Prior art) In a horizontal stockinette knitting machine, a pair of left and right stitches are both placed in an inactive upward position, and a switching operation at the knitting end causes the stitches located at the rear in the knitting direction to be placed in an activated downward position. , and the adjustment of the stitch amount according to the downward movement position is controlled using a pulse motor or a stepping motor as a drive source and an electric signal applied to the motor, for example, as disclosed in Japanese Patent Publication No. 1-567.
It is disclosed in Publication No. 14.

(Problem to be Solved by the Invention) The control of the left and right angles in the device using the above-mentioned conventional means is such that a spring is always applied in the downward direction by the drive of a motor, and both sides are moved to an inactive position against the spring. When it is moved upward, both sides are held in the upward movement position by locking devices that operate respectively.
For the hinges that require Ste/Sochi operation, release the locking device, move it downward under the force of the spring, and support the downward movement at a predetermined position against the spring force to achieve the desired Ste/Sochi position. Therefore, in order to control each stitch, a locking device that locks and releases the stitch in the upward movement position and a spring that always biases the stitch in the downward movement direction are required. Space for these equipment is required on the panel surface, the design and equipment are complicated, and the engagement operation is also particularly troublesome.

(Means for Solving the Problems) The present invention simplifies the configuration by omitting the attachment of the locking device for the left and right ridges and the traction spring for the lateral ridges in the conventional means, and
The left and right angle can be controlled only by the amount of rotation of the annular cam groove that is linked to the motor.
An annular grooved cam consisting of a small arc-shaped groove centered on the rotational axis of the rotational disc, and a curved eccentric groove that is continuous at both ends of the groove and gradually eccentric in the larger diameter direction. is provided, and both ends of the small arc-shaped groove are set as the basic position, and a pair of rocking pieces whose base ends are pivoted in symmetrical positions by fitting and engaging one end of each into the basic position are interlocked with the left and right mounts. and, by rotating the annular grooved cam by the operating motor, the stitch amount of the other stitch can be adjusted by the eccentric groove while one of the stitches is kept in an inactive state by the small arc-shaped groove. Features.

(Function) In the device of the present invention, the rotary plate 5 is activated by a signal to the drive motor.
Both ends of the small arcuate groove 8a are rotated by a predetermined amount to bring the engaging ends 10a, lla of the swinging pieces 10.11 on both sides to the basic position aa' of the annular groove cam 8 as shown in FIG. When the interlocking mechanism 12.1 including the swinging piece 1O111
3, the movable member 3.3 integral with the dowel 2.2 is held in the upward movement position, and both dowels 2.2 are held in the inactive upward movement position, thereby changing the direction of the reciprocating end of the carriage during knitting work. When knitting is performed in the direction of the arrow in FIG. 4, motor b moves the rotary plate 5 from the state shown in FIG. 3 by 120' in the direction of the half-hour hand.
When rotated, the engagement end (small roller) of the left side moving piece 10 is moved by the movement of the small circular arc groove 8a due to the rotation of the annular grooved cam 8.
changes from the basic position a to a', and during this movement, the engaging end 10a of the left rocking piece 10 remains stationary, but the engaging end (small roller) 11a of the right rocking piece 1206 of the grooved cam 8 moves. It rotates and moves from the basic position a in the eccentric groove 8b on one side until it reaches its end, and reaches the maximum eccentric position according to the eccentric curve of the eccentric groove 8b. The integral movable member 3 is moved to the lowest moving position, and along with this, the rear stitch 2 is activated in the knitting direction indicated by the arrow, and the stitch position of the maximum amount S is set.

In this way, in the upward movement position in which both the ridges 2.2 are inactive, the engagement ends 10a of the swinging pieces 10.11 are in symmetrical positions on both sides.
, Ila is located at the basic position a1a' of the grooved cam 8, but from this state, the rotary plate 5 is moved to 1 by a signal to the motor b.
If it is rotated in the left or right selection direction within the range of 20', one of the oscillating pieces that follows the engagement end or the small arcuate groove 8a remains stationary.
The dowel on this side remains in the inactive upward position, and the swinging piece whose other engagement end follows the inside of the eccentric groove 8b moves the dowel on this side via the interlocking mechanism by the amount of swing corresponding to the amount of eccentricity of the groove. The thread is rotated to the operating position, and the amount of downward movement thereof can be selected by the amount of signal sent to motor b, so the stitch thread can be set at a desired stitch amount position.

(Example) Embodiments of the present invention will be described with reference to the drawings.

Substrate 1 integrated with a knitting carriage in a horizontal stockinette knitting machine
As is well-known in
．． 2 are provided in a V-shape, and each of the joints 2 holds the substrate l and runs along the bottom surface of the substrate, and a movable piece 3 integrated therewith is positioned on the top surface so that it can be moved in an oblique direction according to the slot 4. It was established in

Reference numeral 5 denotes a rotary disk fixed to a rotary shaft 7 of a pulse motor or stepping motor 6 mounted on the upper surface of the substrate 1, and a small arc-shaped groove 8a centered on the rotary shaft 7 is formed on the lower surface of the rotary disk. A potbell-shaped annular groove cam 8 is formed by connecting the ends of curved eccentric grooves 8b, 8b which are continuous with each other at both ends of the small arcuate groove 88 and gradually eccentric in the direction of the larger diameter.

Therefore, the small arcuate groove 83 occupies 1/3 of the circumference of the annular groove 8, and the left and right eccentric grooves 8b, 8b continuous at both ends also occupy 1/3 of the circumference, and these three grooves 8a, 8b,
8c is continuous with a rotation angle of 120°.

Swing pieces 10 and 11 are provided at symmetrical positions on both sides of the rotary plate 5, and the base ends of the swing pieces 10 and 11 are pivotally supported on the frame 9 on the base plate 1.
With both ends of the small circular arc groove 8a in the basic positions a and a', the small wheels 10a and 10 at each end of the swinging piece 10.11
la was positioned at the basic positions a and a' and engaged.

Each of the swinging pieces 10.11 at both ends operates as a member of an interlocking mechanism 12.13 for operating the armature 2.2, and in the illustrated example, the interlocking mechanism 12.13 is connected to the swinging piece 10.11.
and the engaging pieces 14 that are combined with each other.

As shown in FIG.
It has a small roller ring 10a consisting of a bearing that fits into and engages with the inside, and the other end is rotatably fitted loosely to a shaft rod 16 fixedly supported between the base plate 1 and the support piece 15, as shown in FIG. and a protruding piece toe having a recessed hole 10d at the other end.
has been established.

Note that the swing piece 11 also has the same configuration as above.

As shown in FIG. 6, the engagement piece 14 has a shaft support piece 14a that rotatably fits loosely on the shaft rod 16 at one end, and two sleeve pieces 14b, 14b at the other end with a gap between them. At the same time, an engagement hole 14c is formed to engage with a protrusion 18 made of a bearing provided on each movable piece 3.3 integrated with each ridge 2.2, and engage with these swinging pieces l0111. In combination with the piece 14, an interlocking mechanism 12.1 between the annular groove cam 8 and the double-side dowels 2.2 is created.
3 was constructed. That is, the rocking pieces 10.11 and the engaging pieces 14 of each interlocking mechanism are rotatably inserted into the fixed shaft rod 16 at the respective shaft supports 10b and lla, and swing as shown in FIG. The protrusions 10c and lie of the pieces 10.11 are respectively positioned between the sleeve pieces 14b and 14b of the engagement piece 14, and the recesses 10d and lid of the protrusions 10c and 11C are elastically inserted between the lid and one of the sleeve pieces 14b. By interposing the spring 19, the rocking piece 1O111 and the distal end of the engaging piece 14 are elastically connected and move together, so that the engaging hole 14c of the engaging piece 14 is connected to the thread 2.2. When the dowel 2.2 is moved by fitting and engaging each protrusion 18 on the upper surface of the movable piece 3.3, or when an unexpected force is applied to the dowel due to an obstacle during formation, the bullet The shock absorber is actuated by the spring 19,
This makes it possible to prevent accidents such as thread breakage caused by the above-mentioned obstacles.

In this way, the small roller lOa that is fitted and engaged with the annular groove cam 8,
The swinging piece 10 when lla changes depending on the shape of the grooved cam 8 by the rotation of the rotating shaft 5 using the motor b as the driving source.
．． The position of the dowel 2.2 is changed by the amount of movement of the dowel 2.2 through the interlocking mechanism 12.13. Note that the interlocking mechanism is not based on the combination of the swinging piece 10.11 and the engagement piece 14, but the movable piece 3 is directly attached to a part of the swinging piece 1O111.
In some cases, the use of the engagement piece 14 may be omitted by providing an engagement hole that engages with the small wheel 18.

In the figure, reference numeral 20 denotes a proximity switch provided on the outside of the rotary disk 5, which detects the rotational position of the rotary disk 5 at a position facing the recessed notch 21 formed on the periphery of the rotary disk 5, for example. In the illustrated example, as shown in FIG. 4, the computer performs subsequent operations using the right stitch 2 as the maximum stitching position as the origin.

(Effects of the Invention) According to the present invention, both of the pair of dowels are locked in the inactive up position, and one dowel is placed in the inactive up position and the other dowel is moved down to operate. In addition, the stitch amount due to the downward movement can be set arbitrarily by simply controlling the amount of rotation of a rotation plate by a pulse motor or a stepping motor, and the stitch is engaged in an inactive upward movement position. The use of a locking means for stopping and a spring that urges the thread downwards is omitted, and the shape of the grooved cam used as the control means is a small arc groove with no deviation and continuous at both ends. The small arc-shaped groove and the eccentric grooves continuous on both sides each have a circumference of 1.
/ 31, and the rotation angle is set to 120'' at a time, and by setting the positions of the two driven members to be fitted into the grooved cams, it is possible to accurately regulate the operation of the abutment.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view with the drive motor removed, FIG. 2 is a sectional view taken along the line ■-■ of FIG. 1, and FIG.
The figure is a front view showing the relative position of the dowel position on the board and the groove cam, Figure 4 is a front line diagram showing the operating state, Figure 5 is a perspective view of the swinging piece, and Figure 6 is the engagement piece. FIG. 1... Board 3... Moving piece 6... Motor 8... Annular groove cam 8b... Eccentric groove 1O1 10a 5lla -... Small roller wheel 12, a, a'
... Basic position 2 ... Degree Mountain 5 ... Turning plate 7 ... Rotating shaft 8a ... Small circular arc groove 11 ... Rocking piece 13 ... Interlocking mechanism patent issued Requester: Mitsubishi Manufacturing Co., Ltd.
3 persons: Mr. Seishi Kitamura Figure 1 Figure 3 Figure 2 Procedural amendment 6゜ ``Detailed description of the invention'' column and drawings of the 2008 statement of the year subject to amendment

Claims (1)

[Claims] On the surface of a rotary disk that is linked to a pulse motor or a stepping motor, there is a small arc-shaped groove centered on the rotary axis of the rotary disk, and a curved line that is continuous and eccentric in the direction of the larger diameter at each end of the groove. An annular grooved cam is provided in which each end of the eccentric groove is continuous with each other, and both ends of the small arc groove are set as the basic position, and one end of each is fitted and engaged in the basic position, so that the base ends are pivoted to a symmetrical position. A pair of supported rocking pieces is used as an interlocking mechanism with the right and left dowels, and by rotating the annular grooved cam by the operating motor, one of the dowels is kept in an inoperable state by the small circular arc groove while the other dowel is moved. What is claimed is: 1. A conversion actuation device for stitches in a horizontal stockinette knitting machine, characterized in that the amount of stitches can be adjusted by an eccentric groove.