JPH042847A - Operating needle cam for weft knitting machine - Google Patents

Abstract

PURPOSE:To obtain the small-size title cam capable of carrying out transfer by integrally providing a cam for knitting stitch and cam for transfer in a cam of isosceles triangle containing a needle raising cam in specific conditions. CONSTITUTION:A needle-raising top cam 26 is provided so as to be able to freely go out and draw in on the top of rectangle needle-raising cam 22. A center cam 28, transfer course guide cam 30 and the raising cam 22 are arranged in a form of isosceles triangle and outer edge thereof is formed into needle bat contact face. Stitch delivery course 32 is closed at the end part of the center cam and guard cam 31 and a knitting course guide cam 33 capable of penetrating needle bat raised in needle bat contact face of needle raising cam into a course 29 is provided so as to able to freely go out and draw in and the cam 33 is interlocked with the above mentioned cam 30 so as to alternately go out and draw in.

Description

[Detailed description of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle steering cam capable of knitting and transferring knitted fabrics.

[Conventional technology]

Cams that move up and down needles for knitting fabrics include cams that are used to raise the needles that knit stitches to the knitting or tuck position, and cams that lower the needles for the purpose of transfer. . The cam that lowers the needle for the purpose of transfer 1 is the cam on the stitch transfer side that raises the needle on the stitch transfer side to the highest position,
The stitch receiver inserts the side needle into the knitted fabric loop that is locked to the stepped part on the shank of the needle on the stitch transfer side that has risen to the highest position. The stitch holder that raises the stitch is twisted with a cam on the side. The above-mentioned stitch amount side cam and stitch transfer side cam are usually provided on both carriages so that the stitch amount can be transferred to either the front or rear needle. These cams simply raise and lower the needles that effect the preselected transfer. However, the needles that are raised to the knit or tuck position for stitch knitting are divided into the needles that accumulate at the tuck position after being raised to the tuck position and the needles that rise further to the knit position, and the needles that select the knit position further We have to increase it from 1 to that extent. To this end, in the needle raising cam that raises the needles to the knit and tuck positions, an area must be provided in the needle advancement course to separate the needles that accumulate at the tuck position from the needles that are raised to the knit position. When performing a transfer, the needle is raised to a transfer stitch position higher than the knitting position when the selection in the above area is completed. The area for this must be parallel to the direction in which the carriage travels, so the length of the cam must be increased accordingly. The height of the cam that raises and lowers the needle is determined by the highest position at which the needle is raised, and is determined by the inclination angle of the raising and lowering surface that the butt of the needle comes into contact with and raises and lowers the needle butt. If the above-mentioned needles are not separated between the needles that take the knit position and the needles that take the tuck position, the cam for raising the needle will have its peak at the point where the needle is raised to its highest point, and will be at an angle determined by the model. The length of the base of an isosceles triangle with a needle lifting surface having an inclined angle is the lateral size of the cam. However, as detailed above, it is a knit! Since it is necessary to select the needle for selecting the tuck position and the needle for selecting the tuck position, as well as the selection area for the stitch passing needle of the transfer, the conventional cam extends stepwise from side to side in the middle part of the isosceles triangle. A selection area will appear,
The length of the base is larger than that of the isosceles triangular cam,
Therefore, the size of the cam also increased. This is not preferable because it increases the size and weight of the carriage. Problems to be Solved by the Invention] In view of the above points, the present invention provides knit and tuck fabrics. To obtain a small cam having a triangular shape, which is a cam for operating a needle, which allows the needle to select the three positions of welts, and which can perform transfer 1. Means for Solving Problem K] A center cam 28 is provided on the upper part of the trapezoidal needle raising cam 22, which has a needle raising top cam 26 retractably provided on the top thereof, with the course 29 of the knitting needles interposed therebetween. A transfer route guide cam 30 is provided within the course so as to be able to appear and retract, including a center cam and a transfer route guide cam. The needle raising cam has a substantially isosceles triangular shape with the center cam as its apex, its outer edge is the needle butt abutting surface, and the needle raising cam has an inverted V-shape that faces across the center cam and the stitch transfer course 32 provided on its outer periphery. guard cam 31
A knitting path guide cam 33 is removably installed at the end of the knitting needle, which closes the stitch passing course 32 and allows the needle butt raised on the needle butt contact surface of the needle raising cam to enter the course of the knitting needles. The transfer route guide cam and the knitting route guide cam are interlocked so that they appear and disappear alternately. ] During normal knitting, the knitting route guide cam is protruded and the transfer route guide cam is recessed, so the needle bat raised on the rising cam surface of the needle raising cam,
The tuck and knitting needles are introduced into the course of the knitting needles by the knitting path guide cam. Then, tuck needles and knitting needles are sorted out within the knitting needle course. During transfer, the knitting route guide cam is retracted and the transfer route guide cam is protruded, so the transfer needle does not enter the knitting needle course but enters the stitch transfer course. Knitting route guide cam and transf above? Transfer needles, knits and tuck needles are sorted by selecting whether or not the route guide cam appears, and the sorting of knits and tank needles is carried out by a breather 51, which will be described later, and a needle raising top cam provided at the top of the needle raising cam. As a result, the transfer needle is raised at the outer periphery of the isosceles triangular cam group including the needle raising cam, and the needles are sorted into knits and tucks inside the transfer needle. K Embodiment An example of the implementation of the device of the present invention will be described below with reference to the drawings. FIG. 1 shows the cam lock 1 of the carriage viewed from below, and FIG. 2 shows the needle 2 installed at the position corresponding to the cam lock 1. Select jack 3, selector 4. A side view of the select jack prefix 5 and the like is shown. The needle 2 used in the present invention is a compound needle, and a slider 7 is slidably inserted into the top of the tip of the needle body 6, and by operating a slider butt 8, the slider 7 moves the needle body 6. The hook 9 can be opened and closed. 10 is a needle butt provided on the needle body 6. Select Jack Butt 1
1 is provided with concave portions 12, 13, and 14 at its base, and is engaged with a wire 15 provided through a needle bed (not shown), thereby regulating the position of the select jack butt 11. When the wire 15 is engaged with the recess 12, it is in the welt position, when it is engaged with the recess 13, it is in the tuck position, and when it is engaged with the recess 14, it is in the knit position. Select Jack Breather 5 is a mouth-shaped elastic plate.
Strip 1 inserted through needle bed (not shown)
6 and presses the select jack 3 with its end, urging the select jack butt 11 in the upward direction. 17 is a selector bat of the selector 4. The lock 1 is provided on a cam plate 21, and a cam for stitch knitting and a cam for transfer 1 are mixed together. The needle raising cam 22 provided at the center has a trapezoidal shape with rising cam surfaces 22a on both sides, and has horizontal straight edges 24 on both sides of the central convex portion 23 at the top, and the central convex portion 2
A needle lasing top cam 26 having a butt passing slope 25 is provided on the inner edge of 3 so as to be freely retractable. A triangular center cam 2 whose apex 27 is the intersection of the extension lines of the rising cam surfaces 22a, 22a on both sides of the needle raising cam 22.
8 are provided above the needle raising cam 22 with the same center line. The center cam 28 has a height sufficient to raise the needle 2 to the stitch transfer position. The lower edge of the center cam 28 has a concave cam surface 28a, and forms a knit course 29 between it and the needle raising cam 26. The knit course 29 is provided with a transfer route guide cam 30 that can freely appear and retract, and whose cam surface 30a is a line connecting the rising cam surface 28b of the center cam 28 and the rising cam surface 22a of the needle raising cam 22. The upper part of the center cam 28 and its rising cam surface 28b. A guard cam 31 is provided in a V-shape to seal with 28b. A stitch transfer course 32 is defined between the descending cam surface 31a of the lower edge of the guard cam 31 and the ascending cam surface 28t of the center cam 28, and the upper end of the descending cam surface 31a of the guard cam 31 corresponding to the entrance of the course and the center cam 28 The knitting path guide cam 33 is located between the lower ends of the rising cam surface 28b of the
are set up so that they can appear freely. The same cam 33 is the stitch passing course 32
When the needle butt 10 protrudes into the knitting course 32, the needle butt 10 cannot enter the same course 32 and enters the knitting course 29. A chevron-shaped sliding surface 35 is formed at the center of a concave portion 34 extending in the left-right direction provided at the center of the needle raising cam 22, and the stitch receiver is formed by a cam 36 for raising the side needles and a stitch whose base is pivotally supported on the cam 36. The receiver is provided with a two dollar raising cam 37. The needle butt 10 is attached to the concave portion 34 at both ends of the concave portion 34.
A slope 38 is provided to facilitate entry. The stitch receiver is provided with stoppers 39 and 40 on both sides of the needle raising cam 37 when the cam 37 swings in the left and right direction. Further, in the stitch receiver, the butt passing slope 25 of the needle raising cam 26 described above is located above the swinging range of the needle raising cam 37. A slider guide cam 41 is provided above the guard cam 31. On both sides of the needle raising cam 22, the same cam 2 is provided.
Knitting cams 42A and 42B having a descending slope 42a are provided opposite to the ascending cam surface 22a of No. 2 so as to be slidably movable up and down with respect to the cam plate 21. The details are as follows. Knitting cam 42A,
Since 42B is symmetrical, only the knitting cam 42B will be explained. The knitting cam 423 is the needle raising cam 22
The surface opposite to the ascending cam surface 22a is a loop-forming descending cam surface 42a, and the central portion is a concave portion 43,
A slope 44 extends toward the concave portion 43 from a portion located slightly inward from the loop-forming descending cam surface 42a. Further, a guide cam 46 having an extension portion 45 extending into the recessed portion 43 of the knitting cam 42B is provided at a fixed position adjacent to the knitting cam 42B. The extension part 45 has one side as a lowering cam surface 45a for tuck knots and a stitch receiver, and a lower cam surface 45a for tuck knots and a stitch receiver for a needle. It is parallel to the cam surface 42a. The needle raising cam 22 acts on the select jack butt 11 located at the knit position 1 below the needle raising cam 22.
a pair of pressers 50A and 50B that push down the bat 10 of the select jack 10 to the half position, and a pair of breathers 5 that act on and push down the select jack butt 11 in the tuck position.
1A, 51B, a breather 51 located between them, and a breather 52 which is wider than the width of the needle raising cam 42 and acts on the select jack butt 11 in the welt position. Next, the organizing effect will be explained. It is assumed that the carriage moves in the direction of the arrow in FIG. 3 during knitting. The means for selecting the knit, tuck, and welt positions of the needles 2 during knitting is performed by conventionally known means, and the select jack butt 11 corresponding to the needle to be raised to the knit part is located at the height of the knitting. At this time, the breathers 50A and 50B are turned off and do not act on the select jack butt 11. Therefore, the butt 10 of the needle is attached to the raging cam 2 as shown in the third drawing'.
2 and rises along the cam surface 22a. At this time, the knitting route guide cam 33 protrudes and closes the stitch transfer course 32, and the transfer route guide cam 30 sinks and opens the knitting course 29, so that the needle butt 10 is moved to the knitting route guide cam 33.
, enters the knit course 29, reaches the top 23 of the needle raising top cam 26, and assumes the highest position. During this time, the slider butt 8 also moves as shown by line I# in FIG.
When the slider butt 8 is approximately at the lower edge straight portion 41a of the slider guide cam 41, the tip of the slider 7 separates from the hook 9 due to the difference in elevation between the needle body 6 and the slider 7, and the hook 9 opens. Then, the needle butt 10 rises to the top 23 of the top cam 26 of the needle raising cam 22, and the concave cam surface 28 of the center cam 28
a, but at this time, the slider butt does not descend because it is moving horizontally along the trajectory of the machine, and as a result, the hook is closed. As the carriage advances, the needle butt 10 is lowered in contact with the lowering cam surface 31a of the guard cam 31 and the lowering cam surface 42a of the knitting cam 42B. The slider butt 41 descends at a gentle angle along the slider butt descending path 41b, and during this time the needle 2 descends at a steeper angle, so the end of the slider 7 relatively approaches the hook 9 and closes the hook 9. Needle butt 1 of needle 2 being pulled down by descending slope 42a of tip cam 42B
0 is at full height because the breather 50B is depressed and the select jack butt 11 is not pressed as described above, and is pulled down to the lowest end of the knitting cam 42B, and the yarn is fed first. The knitted yarn is pulled in to create a standard knitted fabric. When knitting tuck stitches, use Select Jack Butt 1
1 is in the position of ■. Assuming that the carriage moves as shown by the arrow, the butt 11 of the select jack 3 and the needle 2
The needle butt 1◇ will move along lines n and n', respectively. At this time, the pressers 51A and 51B are depressed and the presser 51 is protruded. needle butt 10
comes into contact with the rising cam surface 22a of the raising cam 22 and rises along with it, but since the knitting path guide cam 33 is protruding as in the case of knitting, it comes into contact with it and enters the course 29 of the knitting needle. However, because the select jack butt 11 is pushed in by the protruding presser 51, the needle butt 10 transitions across the needle raising top cam 26 rather than reaching the top. At this time, the slider butt 8 moves horizontally while remaining in the highest position as the needle body 6 rises, as in the case of the needle rising to the knitting position, so that the hook 9 is moved to the tip of the slider 7 as the needle butt 10 of the needle body 6 rises. The hook 9 moves upward and opens. But needle butt 1
As mentioned above, since the slider butt 8 does not reach the top 23 of the needle raising top cam 26 and moves across it, the slider butt 8 does not rise any further and passes under the slider guide cam 41 with the hook 9 open. , is pulled down by the descending cam surface 41c of the slider guide cam 41 and thereafter moves horizontally. The needle butt 10 that has crossed the top 23 of the needle raising top cam 26 then descends down the descending slope 42a of the knitting cam 42B in the same way as the first dollar 2 of the knitting course, and reaches the above-mentioned knit position! The knitting cam 42B runs on the same course as the needle 2 which ascends and descends to the lowest end of the knitting cam 42B, and knits the second tuck stitch of standard size. When adopting a welt position that does not raise the needle 2 at all, set the select jack butt 11 to the breather 52 position! I! Make it m. The breather 52 is always in a protruding position, and when the carriage is moved, the select jack butt 11 is pushed in by the breather 52, and the needle butt 10 is also sunk into the needle groove. ．． The slider butts 8 do not come into contact with each other and pass through the positions I' and I'', respectively, and the needle 2 does not act at all. Next, the transfer will be explained. In the cam lock of the carriage shown in Fig. 4, the The following explanation assumes that the stitches are transferred from the needles of the rear needle bed by the cam lock of the rear carriage B to the needles of the front needle bed by the cam lock of the front carriage F shown at the bottom.Both the front and rear carriages F and B are knitting path guide cams. 3
3. The needle lasing top cam 26 is in the recessed position and the transfer path guide cam 30 is in the out position. It is assumed that the front and rear carriages F and 8 move from the fourth right to the left, and the slider butt 8 and needle butt 10 move along the courses of {circle around (2)} and X, respectively. The needle bat 10 on the transfer side, which has proceeded along the course X, comes into contact with the rising cam surface 22a of the needle raising cam 22 after passing the point ■ and ascends the slope, but the slider bat 8 moves straight even after passing the point ■. Therefore, the position of the slider 7 is lowered relative to the needle body 6, and the hook 9 is in an open state. While maintaining this state, the needle butt 10 moves up the rising cam surface 22a of the needle raising cam 22 to the upper part thereof, and then moves up the rising slope 30a of the transfer path guide cam 30. Since the knitting route guide cam 33 is recessed, the center cam 28 is not affected by the knitting route guide cam 33.
It ascends the ascending slope 28a and reaches the highest position (Fig. 4, position ①). On the other hand, for the needles on the receiving side, the slider butt 8 moves along the course ■', and the needle butt 10 moves along the course X', respectively, on the carriage F side. When the needle butt 10 comes into contact with the ascending slope 22a of the needle raising cam 22, the selector butt 11 is pushed in because the breather 51A is protruding, and the needle butt 10 is also pushed in accordingly.
jumps the ascending slope 22a of the needle raising cam 22 without engaging it, and moves from the slope 38 to the concave portion 3.
4, and the stitch amount provided in the center of the concave portion 34 is the needle raising cam 36. The transfer needle comes into contact with the raising cam 37 and is raised (Fig. 4 ■◎ position),
Since the needle raising top cam 26 is recessed, the stitch amount slightly lower than the knit needle course 29 is included in the course. At this time, at the ◎ position, the side needle of the receiver is raised the most, and the spring 55 (
The hook 9 is inserted into the receiver (second figure shown), and the hook is inserted into the receiver loop. After passing the 0 point, the stitch amount on the side needle maintains the same height for a while, but at this time, the needle on the stitch transfer side is being lowered first by the descending slope 31a of the guard cam 31, and the needle on the stitch transfer side has begun to escape from the shifting loop. Then, the needle butt 10 on the stitch passing side that has descended along the descending slope 31a of the guard cam 31 is further pulled down by the descending slope 42a of the knitting cam 423, and is released from the stitch that had been locked up until then (Fig. 4). ■Position). On the other hand, the amount of stitches raised by the transfer needle raising cam 37 and inserted into the stitch loop where the needle on the stitch transfer side is locked is the amount of stitches when the needle on the stitch transfer side starts descending. It descends through the concave cam 30a of the transfer path guide cam 30 and the slope 22b provided inside the top of the needle raising cam 22 and enters the concave portion 34 (position 3 in FIG. 4). The stitch amount up to now is that when the needle body 6 of the side needle is lowered, the slider butt 8 is not operated by the slider guide cam 41, so it moves horizontally, and as a result, the stitch amount is that the hook of the side needle is closed. Become. The amount of stitches that have entered the concave portion 34 increases as the side needle butt 10 moves along the slope 3 as the carriage advances.
8 and comes off the needle raising cam 22. At this time, the selector butt 11 is again set by the breather 51B.
By being pushed, the needle butt 10 jumps the descending slope 42a of the knitting cam 42B, comes into contact with the descending slope 45a of the extension portion 45 of the guide cam 46, and is pulled down and returns to its original position. [Effects of the Invention] A center cam 28 is provided at the top of the trapezoidal needle raising cam 22, which has a needle raising top cam 26 provided at the top so that it can appear and retract freely, and a center cam 28 is provided across the course 29 of the knitting needles. , a transfer route guide cam 30 is provided that can appear and retract freely, and includes a center cam and a transfer route guide cam. The needle raising cam is formed into a substantially isosceles triangle with the center cam as its apex, and its outer edge is the needle butt contact surface, and an inverted V-shaped needle raising cam faces the center cam and the stitch transfer course 32 provided on its outer periphery. guard cam 31
A knitting path guide cam 33 is removably provided at the end of the knitting path guide cam 33, which closes the stitch passing course 32 and allows the needle butt raised on the needle butt contact surface of the needle raising cam to enter the course of the knitting needles. Since the transf 1 route guide cam and the knitting route guide cam are linked so that they appear and disappear alternately, the stitch knitting cam and the transf 7? The cam and the needle raising cam can be integrated into an isosceles triangular cam including the needle raising cam, and by making these cams into an isosceles triangle, the width of the cam can be reduced. Therefore, regardless of the cam that can perform the transfer 1, the carriage width and weight can be reduced, contributing to high-speed knitting.

[Brief explanation of drawings]

The drawings show an embodiment of the device of the present invention. Fig. 1 is a cam layout diagram showing the cam lock provided on the cam plate of the carriage viewed from below, and Fig. 2 is a side view of the needle, select jack, selector, etc. Figures 3 and 3 are cam layout diagrams showing the running locus of the butt when knitting, tucking, and welting, and Figure 4 shows the running locus of the bat during transfer. 22...Needle Raging Cam. 26...Needle raising top cam. 28...Center cam. 29...Knitting needle course. 30...transf 1 route guidance cam. 31...Guard cam, 32...Stitch passing course. 33...knitting route guide cam patent applicant: Shima Seiki Seisakusho Co., Ltd. Agent: Patent attorney Katsu Ohno Attorney: Reiko Ohno

Claims (1)

[Claims] 1. At the top of the trapezoidal needle raising cam 22, a needle raising top cam 26 is provided at the top so that it can freely appear and retract.
Center cam 28 across knit needle course 29
A transfer route guide cam 30 is provided in the course of the knitting needle so as to be able to appear and retract freely, and the center cam, transfer route guide cam, and needle raising cam are formed into a substantially isosceles triangle with the center cam as the apex. The outer edge is used as the needle butt contact surface, and the stitch passing course 32 is closed at the end of the center cam and the opposite V-shaped guard cam 31 sandwiching the stitch passing course 32 provided on the outer periphery of the center cam. A needle steering cam for a flat knitting machine, which is provided with a knitting path guide cam 33 that is removable and capable of moving the needle butt that has raised the needle butt contact surface of the cam into the course of the knitting needles. 2. The needle steering cam for a flat knitting machine according to claim 1, wherein the transfer route guide cam and the knitting route guide cam are interlocked so that they alternately appear and disappear.