JPS6211987Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the structure of a leveling cam in a sock knitting machine, etc., by recessing the upper surface of the tip of the needle lowering picker so that the action surface of the needle lowering picker against the butt of the needle is used as a needle guide of the leveling cam. In order to align the lower end of the leveling cam at approximately the same height as the lower end of the leveling cam, there is a concave part cut out on the lower surface of the leveling cam. The gist is that a baffle plate is provided vertically across the lower ends of the needle guide surface.

To knit the heel part of socks, the cylinder is rotated forward and backward, and the fifth cylinder is rotated for both left and right rotations.
The first two of the needles 1 at the rest level shown in the figure are pressed against the action surface 2' of the needle lowering picker 2 to lower them to the knitting level (Fig. 6).The needle lowering picker performs the stitch increasing operation. 2 are released from engagement with the needles 1 and loosely contact the lower surfaces of the butts of the needles 1, which are at the position shown in FIG. cam 3
When a group of needles 1... pass through, the loose contact with the needles 1 is released, and the elastic force of the spring 4 lowers the needles into the recesses 3'' cut out on the lower surface of the leveling cam 3. The upper part of the picker 2 retracts and returns to the original position where the operating surface 2' of the needle lowering picker 2 and the lower end of the needle guide surface 3' of the leveling cam 3 are approximately at the same height, and by reverse rotation of the cylinder, they are moved to the opposite side. The normal operation of heel knitting is for the needles 1 to press against the action surface 2' and perform the same operation as above, but the number of reciprocating rotations of the cylinder during heel knitting has changed from the current 250 to 260 revolutions per minute. When the speed is increased to 500 revolutions per minute, the strength of the spring 4 must be increased in order to quickly and accurately perform the multiple motion of the needle lowering picker 2. Spring 4
If you tighten it, the needle lowerer 2 will move to the leveling cam 3.
The lower surfaces of the butts of some needles 1... that are passing through the lower rest level are raised and pressed against the recesses 3'' of the leveling cam 3 to detect an abnormality in which the needle lowering picker 2 is above the normal position shown in Fig. 7. Therefore, the needle 1, which is aligned with the needle guide surface 3' of the leveling cam 3 and is at the normal rest level, collides with the corner of the working surface 2' of the needle lowering picker 2, causing the needle to break. (Figure 8) This invention prevents troubles such as needle breakage caused by the needles at rest level colliding with the corners of the needle dropper when knitting the heel part of socks at high speed. The purpose of this device is to describe an embodiment thereof with reference to the drawings.As shown in FIGS. 1 to 3, there is a recessed portion into which the top surface of the tip of the needle lowering picker 2 is pressed by the elasticity of a spring 4 so as to be freely retractable. In the leveling cam 3 having a 3" cutout on the lower surface, the tip of the needle lowering picker 2 swings along the guide curve of the guide plate 5 which is erected substantially parallel to the leveling cam 3 with a gap maintained therebetween. The top surface of the needle lowering picker 2 is in a position where it does not touch the top surface, and the top surface of the tip of the needle dropper 2 is in the recessed part 3
When pressed, the butt of the needle 1 comes into contact with the working surface 2' of the needle lowering picker 2, and the needle lowering picker 2 rotates back and forth to perform heel knitting, and the first two needles 1, 1 touch the working surface 2'. When the needle lowering picker 2 is pressed down against the elasticity of the spring 4 and the two needles 1, 1 are pulled down to increase stitches, the rotation of the cylinder starts after the first two needles 1, 1. At the same time, the needles 1 are prevented from being raised above the rest level by the needle guide surface 3' of the leveling cam 3 at a position where the upper surfaces of the respective butts of the needles 1 are brought into contact with each other, which are aligned at a rest level of a certain height. In another embodiment, as shown in FIG. 4, if there is an attached object such as a cam below the central part of the leveling cam 3, the needle lowering The pickers 2, 2 are brought into pressure contact with the recesses 3'', 3'' provided on the lower surface of both ends of the leveling cam 3 so as to be freely protrusive and retractable, and the baffle plates 6, 6 are suspended from the recesses 3'', 3'' as in the previous embodiment. It is what it is.

Since the present invention is constructed in this way, the cylinder rotates back and forth during heel knitting, and the first two needles 1 of the group of needles 1 are aligned at the rest level on the needle guide surface 3' of the leveling cam 3. , 1 are engaged with the working surface 2' of the needle lowering picker 2, and the needle lowering picker 2 is pushed down to bring the two needles 1, 1 to the knitting level to increase the number of lowered stitches. At this time, a group of needles 1 following the first two needles 1, 1 pass below the leveling cam 3 while maintaining a fixed position at the rest level along the baffle plate 6 provided on the leveling cam 3, The needle lower picker 2 is released from engagement with the first two needles 1, 1 and returns to its original position due to the elasticity of the spring 4. However, in order to quickly return the needle lower picker 2 to knit heels at high speed, the spring When the elasticity of 4 is made stronger, the leveling cam 3
Even if the lower surface of the butt of the needle 1 which is at the lower rest level is struck, the upper surface of the butt of the needle 1 will come into contact with the baffle plate 6 to prevent it from rising and to secure the fixed position at the rest level, the needle lowering picker 2 is also This prevents the needle group from rising above a fixed position where it can pass below the leveling cam 3, thereby preventing problems such as the needle 1 colliding with the corner of the needle lowering picker 2 and causing needle breakage. Even when the needle lowering pickers 2, 2 are provided at both ends of the leveling cam 3, even if the needle lowering pickers 2, 2 return rapidly, the needle 1... will be raised above the rest level by the baffle plates 6, 6. In order to reliably prevent this, the needle 1 is also prevented from breaking.

As described above, the present invention is a useful device that has a simple structure, is easy to manufacture, and is reliable in operation.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an embodiment of the present invention, Fig. 2 is a left side view of the same, Fig. 3 is a bottom view of the same, and Fig. 4 is a partially cutaway front view showing another embodiment. FIG. 5 is a front view showing the relative position of the conventionally known leveling cam and needle lowering picker, FIG. 6 is a front view showing the relative position where the needle lowering picker is pushed down, and FIG. 7 is a front view showing the relative position of the needle lowering picker when it is pushed down. Fig. 8 is a front view showing the position relative to the needle when the needle is returned to its original position.The needle lowering picker hits the needle strongly and returns to a higher position than the normal position. FIG. 1...Needle, 2...Needle lowering, 3...
Leveling cam, 3'...needle guide surface,
3″... recess, 6... baffle plate.

Claims (1)

[Scope of utility model registration request] In order to recess the upper surface of the tip of the needle lowering picker and aligning the action surface of the needle lowering picker against the butt of the needle at approximately the same height as the lower end of the needle guide surface of the leveling cam, the needle lowering picker is inserted into the recess provided on the lower surface of the leveling cam. A baffle plate is vertically installed at a position that does not contact the upper surface of the tip of the needle but contacts the butt of the needle, facing the circumferential side of the cylinder and extending between the lower ends of the needle guide surface to prevent the needle from sinking into the recess. The structure of a leveling cam in a sock knitting machine, etc.