JPS6118060Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stitch presser actuating device suitable for a horizontal stockinette knitting machine, particularly during stitch transfer operation. When the knitting carriage reaches each end of its reciprocating motion, the stitch presser mechanism alternately switches and tilts its presser to an appropriate posture in accordance with the change in direction, but the transfer cams before and after the stitch transfer operation are As shown in Figure 1, since the actuating cam surfaces are arranged close to each other, it is necessary to switch and tilt the presser within a limited range to adapt to this. The switching mechanism is not suitable for transfer cams, and in order to utilize the movement of the switching slider when the ground knitting is activated, it is necessary to move the transfer stitch within a limited narrow range using the movement of the slider. The tilting of the presser must be changed.

The purpose of the present invention is to obtain a device that allows the slider to change and tilt within a limited amount of movement and within a narrow range under these constraints. Mechanism base plate 1
A presser 2 consisting of a foot 3 and its supporting arm 4 is provided with the foot 3 protruding downward, and the presser 2 is reversed to a posture position suitable for holding stitches in each direction of movement during reciprocating movement of the stitch holding mechanism. In the switchable device, the middle of the support arm 4 of the presser 2 is pivoted and connected to the free end 7 of a link 6 which is swingably supported on the base plate 1 by a shaft 5, and the base plate 1 is moved back and forth. A slider 8 that slides against the base plate 1 at the end thereof is provided with a cam groove 9 that is long in the sliding direction with a V-shaped recess 9a in the middle of the lower side, and the pin 10 at the upper end of the support arm 4 of the presser 2 is connected to the cam. The spring 11 is fitted into the groove 9 and urges the support arm 4 downward, so that the reversal switching fulcrum X of the presser 2 is formed below the swinging support of the link 6. .

In the illustrated embodiment, the link 6 is configured in a fan shape with the shaft 5 at the center, and the stoppers 12 are attached to both sides of the link 6.
The swing range of the link 6 is restricted by the supporting edge.

Note that a leaf spring is used as the spring 11 that biases the support arm 4 downward, and this is bent and installed between the pivot point 7 of the support arm 4 and the pin 13 fixed to the slider 8 as a pressing spring. Although the actuated spring is shown, it is not limited to a leaf spring, but may be an elastic coil spring, and is not limited to a push spring; a space may be formed in the lower part of the base plate 1 to act as a traction spring. In the figure, 14 and 14' indicate front and rear transfer cams, and 15 indicates a knitting needle. During knitting work, when the bed plate 1 moves with the carriage to the left of the arrow in FIG. 1, the stitch pressing portion of the foot 3 of the presser 2 is located immediately behind the knitting needles 15, as shown by the solid line in the figure. Therefore, when traveling in the opposite direction, it is necessary to reverse the foot 3 so that it is located directly behind the left side as shown by the dotted line, and the switching tilt is controlled by the front and rear shifting cams 14, 1.
It is necessary to perform this within an extremely narrow range in terms of the arrangement of 4'.

The above switching tilting of the foot 3 in the device of the present invention is performed as follows.

When the base plate 1 moves together with the carriage in the direction shown in the first figure and reaches the end, the slider 8 slides a predetermined amount in the same direction with respect to the base plate 1 by known means. At this time, as the cam groove 9 of the slider 8 moves, the pin 10 at the upper end of the support arm 4, which is urged downward by the spring 11 as shown in FIG.
The pivot point 7 of the support arm 4 rotates about the shaft 5 while being regulated by the link 6. Thereafter, with the pin 10 engaged in the recess 9a, the pivot point 7 of the support arm 4 rotates while being regulated by the link 6, and the support arm 4 tilts as the cam groove 9 moves.
This tilting movement operates smoothly and lightly due to the extremely slight resistance of the rotating parts in the shaft supports 5 and 7, and the support arm 4
However, when the foot 3 tilts beyond the shaft support 5, the foot 3 reverses around the X point below the swing support part of the link 6, and when the cam groove 9 reaches the sliding end, the V-shaped recess 9
The pin 10 is pushed up against the force of the spring 11 by the beveled edge of a and stabilized in a fixed position, and the foot 3 is set to the inverted inclined position to adapt to the stitch pressing in the next backward movement. The reversal tilting operation is performed in the same manner even when the direction of movement is opposite to that of .

In the above device, the support arm 4 rotates in a tilting direction using the lower part of the shaft support 5, that is, the portion X near the needle bed, as a fulcrum. Therefore, the reverse tilting motion of the tip A of the presser 2 follows a trajectory as shown in FIG. This can be done in a narrow range l and can be adapted to the arrangement of the front and rear transfer cams.

In this way, according to the present invention, the presser 2
Since the reversal switching fulcrum X is formed as close to the needle bed as possible below, the foot 3 of the presser 2 can be reversed and tilted within a limited narrow range, and the sliding amount of the slider 8 used conventionally cannot be changed. It has the effect that it can be used to perform the desired operation.

[Brief explanation of the drawing]

FIG. 1 is a front view, FIG. 2 is a sectional view taken along the line 2, and FIG. 3 is a line diagram showing the operating mode. 1... Base plate, 2... Presser, 3... Foot, 4... Support arm, 5... Shaft, 6... Link, 7
...Flying end of the link, 8...Slider, 9...
Cam groove, 9a... V-shaped recess, 10... Pin, 11
...Spring.

Claims (1)

[Scope of utility model registration request] A presser 2 consisting of a foot 3 and its supporting arm 4 is provided on the base plate 1 of the stitch presser mechanism that reciprocates on the upper surface along the needle bed, with the foot 3 protruding downward, and the presser 2 is attached to the stitch presser mechanism. A link 6 in which the middle of the support arm 4 of the presser 2 is swingably supported on the base plate 1 by a shaft 5 is capable of being reversely switched to a posture position suitable for stitch pressing in each direction of movement during the reciprocating movement of the presser. A slider 8 that is pivoted and connected to the free end 7 of the base plate 1 and slides against the base plate 1 at the end of the reciprocating movement of the base plate 1 has a cam groove that is long in the sliding direction and has a V-shaped recess 9a in the middle of the lower side. 9 is provided, and the pin 10 at the upper end of the support arm 4 of the presser 2 is fitted into and engaged with the cam groove 9, and the spring 11 is actuated to bias the support arm 4 downward. A presser actuating device for pressing stitches in a horizontal stockinette knitting machine formed below a sliding support of a link 6.