JP3459278B2 - Dial cam actuator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a make-up (bag by transfer) for knitting a motif pattern (gala pattern) on a rubber opening of a sock in a circular knitting machine. The present invention relates to a dial cam actuating device for preventing omission of knitting. [0002] In a generally used circular knitting machine,
The standard knitting process for knitting a sock or the like is as follows: a rubber cuff, a make-up (bag knitting), a leg, a heel,
It is performed in the order of the sole part, the toe part, and the waste thread (pulled thread). As shown in FIG. 3, the circular knitting machine has a knitting needle cylinder 1, and a knitting needle 2 is provided on the knitting needle cylinder 1 so as to be vertically slidable by a cam mechanism (not shown). A dial cap 3 is provided upright on a frame (not shown) immediately above the knitting needle cylinder 1, and a dial rotating shaft 4 is mounted on the dial cap 3 so as to rotate synchronously with the knitting needle cylinder 1 with a bearing 4 a. A rotary dial 5 having a frusto-conical shape is integrally provided at the lower end of the dial rotary shaft 4. A number of guide grooves are formed radially on the upper surface of the rotary dial 5,
A transfer jack 6 is fitted in each guide groove so as to be able to advance and retreat in the radial direction. As shown in FIG. 7, there are two types of transfer jacks, a transfer jack 6 having a short bat 6a and a transfer jack 6 having a long bat 6b.
The rotary dial 5 is arranged on half of the entire circumference. The short bat 6a of the short bat transfer jack 6 and the long bat 6b of the long bat transfer jack 6 have the same width t but different heights. In the knitting process of the circular knitting machine, the motif pattern is usually inserted and knitted mainly into the instep portion of the leg portion or the sole portion. The demand for inserting and knitting motif patterns in parts has also increased. Therefore, a dial cam actuator was developed to insert and knit a motif pattern in the rubber mouth. As shown in FIGS. 3 and 4, the dial cam actuating device includes an inside ring cam 7 and an outside ring cam 8 fixed to the lower surface of the dial cap 5 and a lower surface of the dial cap 3. It has a press-out cam 10 and a press-in cam 11, which are provided to be able to move up and down. The inside ring cam 7 and the outside ring cam 8 move the short butt transfer jack 6 and the long butt transfer jack 6 arranged in half of the entire circumference of the rotary dial 5 in a radial direction. The press-out cam 10 and the press-in cam 11 move the short bat transfer jack 6 and the long bat transfer jack 6 between an operation position and a non-operation position by a link mechanism using a lever (not shown). A circular cutter 9 is provided outside the outside ring cam 8 so as to cut the supplied yarn. When the motif pattern is not knitted on the rubber portion of the sock, the dial cam operating device moves the press-out cam 10 and the press-in cam 11 to the inoperative position raised from the moving passage of the transfer jack 6, and Is moved along the inner peripheral surface of the outside ring cam 8. Therefore, as shown in FIG. 5, the transfer jack 6 is located at a position where its tip slightly protrudes from the outer periphery of the rotary dial 5, that is, is slightly retracted from the back side of the knitting needle 2. When the motif pattern is knitted on the rubber portion of the sock, the dial cam operating device moves the press-out cam 10 and the press-in cam 11 to an operating position for engaging with the bats 6a and 6b of the transfer jack 6,
The transfer jack 6 is moved along the outer peripheral surface of the inside ring cam 7 by the press-in cam 11, and the leading end of the transfer jack 6 projects from the outer periphery of the rotary dial 5 by the press-out cam 10. Therefore, the transfer jack 6 moves from the position where the distal end shown in FIG. 3 is drawn inward from the outer periphery of the rotary dial 5 to the position where the distal end shown in FIG. This allows the transfer jack 6
Is to knit a loop without hooking a motif pattern thread 2
Transfer to That is, the press-out cam 10 is moved to the operating position at the time of make-up (bag knitting by transfer), and at the start of make-up, the transfer jack 6 is pushed outward in the radial direction, and the loop of the knitting needle 2 is moved through the transfer jack 6. When the makeup is completed, the transfer jack 6 is pushed outward in the radial direction, and the loop of the transfer jack 6 is transferred to the knitting needle 2. [0012] However, the above-described dial cam operating device, when knitting a sock of a type that inserts and knits a motif pattern into a rubber mouth, knits a transfer jack with a press-out cam as shown in FIG. At the end of make-up knitting, the loop at the boundary between the first long bat transfer jack and the last adjacent short bat transfer jack is stretched, and the loop is knitted from the long bat transfer jack. There is a problem in that eyesight occurs at the stage before transfer to the side, which not only impairs knitting of makeup but also impairs product quality. [0013] In order to solve the above-mentioned problem, the present invention provides a sock of a type in which a motif pattern is inserted and knitted in a rubber mouth portion, at the end of make-up knitting, the last long butt transfer jack adjacent to the end of the first long bat transfer jack. By reducing the distance from the tip of the short butt transfer jack, the length of the loop transferred from the transfer jack to the knitting needle side is eliminated, preventing the loop transferred from the transfer jack side to the knitting needle from dropping and improving the product quality. It is an object of the present invention to provide a dial cam actuating device for improving the performance. According to the present invention, there is provided an inside ring cam for radially moving a short bat transfer jack and a long bat transfer jack which are arranged by half of the entire circumference of a rotary dial. And an outside ring cam, a press-in cam that pulls each transfer jack into the rotary dial, and a press-out cam that pushes each transfer jack out of the rotary dial. In a dial cam actuating device for transferring to a transfer jack and transferring the loop of the transfer jack to a knitting needle at the end of make-up, an auxiliary press-out cam is provided so as to be movable up and down immediately before the press-out cam. Make To reduce the distance between the tip of the first long butt transfer jack at the beginning of the operation of the press outcome and the tip of the adjacent short bat transfer jack at the end of the non-operation of the press outcome. According to the dial cam operating device of the present invention, the auxiliary press-out cam is operated at the end of make-up, so that the leading end of the first long bat transfer jack on which the press-out cam operates and the final end where the press-out cam does not operate. The gap between the end of the short butt transfer jack and the loop transferred from the transfer jack to the knitting needle side is eliminated, preventing loops transferred to the knitting needle side from falling off and making up. Product quality can be improved without impairing knitting. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In the present invention, the same components as those in the above-described specific example will be described with the same reference numerals. 1 and 2, reference numeral 20 denotes an auxiliary press outcome, and the auxiliary press outcome 20 is provided immediately before and after the press outcome 11 so as to be able to move up and down. The auxiliary press-out cam 20 is provided so as to float on the dial cap 3 by the elastic force of the coil spring 21, and the floating position is regulated by a stopper 22 provided in the middle of the dial cap 3. . An actuator 23 using, for example, an air cylinder device is screwed on the upper portion of the dial cap 3. The output shaft 23 a of the actuator 23 is connected to the upper part of the auxiliary press-out cam 20. An air supply pipe 24 is connected to an upper portion of the actuator 23 via a pipe joint 25, and the actuator 23 is connected to a knitting control circuit (not shown). Accordingly, when the actuator 23 is operated based on a signal from the knitting control circuit at the end of the makeup for ending the knitting of the motif pattern in the rubber mouth portion, the auxiliary press-out cam 20 is moved from the raised inoperative position to the coil position. The lower butt transfer jack 6 and the shorter butt transfer jack 6 are pushed out to the operating position against the elasticity of the spring 21. Next, the operation of the present invention will be described. In a stage before make-up in which a motif pattern is knitted in the mouth rubber portion, the knitting needle cylinder 1 is rotated to knit one or two courses with the knitting needles 2 in the mouth rubber portion. At the start-up stage of knitting the motif pattern in the rubber mouth portion, the press-out cam 10 and the press-in cam 11 are moved to the operating position, and the long butt transfer jack 6 and the short bat transfer jack 6 are moved by the press outcam 10 as shown in FIG. The loop of the knitting needle 2 is transferred to the long butt transfer jack 6 and then the loop of the knitting needle 2 is transferred to the short butt transfer jack 6. The long bat transfer jack 6 and the short bat transfer jack 6 whose loops have been transferred
Is moved by the press intercom 11 to a position where it is drawn inward of the rotary dial 5 shown in FIG. In the make-up stage for knitting the motif pattern in the rubber mouth portion, the rotary dial is maintained while the long bat transfer jack 6 and the short bat transfer jack 6 are pulled into the rotary dial 5 shown in FIG. The make-up knitting is performed by rotating the knitting needle 5 synchronously with the knitting needle cylinder 1. At the end of make-up, which ends knitting of the motif pattern in the rubber mouth, the auxiliary press outcome 20
Is moved from the inoperative position raised by the operation of the actuator 23 to the operating position lowered, and the long butt transfer jack 6 and the short bat transfer jack 6 are pushed outward by the auxiliary press-out cam 20. The long butt transfer jack 6 and the short bat transfer jack 6 are
After moving one course by 0, press outcome 10
Is moved to the operating position, the long butt transfer jack 6 and the short bat transfer jack 6 are moved to the position shown in FIG. Transfer to knitting needle 2. When the loop of the long butt transfer jack 6 is transferred to the knitting needle 2 by the press outcome 10,
Since the short butt transfer jack 6 has been pushed outward by the auxiliary press outcome 20 in the previous course, the short butt transfer jack 6 has the leading end of the last short bat transfer jack 6 and the leading end of the first long bat transfer jack following it. The interval is reduced, and the elongation of the loop transferred from the long butt transfer jack 6 to the knitting needle 2 is eliminated.
As a result, omission of the loop transferred from the transfer jack to the knitting needle is prevented, and the make-up knitting is not impaired, so that the quality of the product can be improved. As described above, in the dial cam operating device according to the present invention, the auxiliary press-out cam is provided so as to be able to move up and down immediately before the press-out cam, and at the end of make-up, the transfer jack is detached by the auxiliary press-out cam. The end of the loop that is transferred from the transfer jack to the knitting needle can be eliminated at the end of make-up, which completes the knitting of the motif pattern in the rubber mouth, so that the transfer jack can be moved from the transfer jack to the knitting needle. Since the loops to be transferred can be prevented from being missed and the make-up knitting is not impaired, the quality of the product can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a cross section of a half of a main part of a dial cam operating device of the present invention. FIG. 2 is a bottom view along the chain line AA in FIG. 1; FIG. 3 is a front view showing a cross section of a half of a main part of a conventional dial cam operating device. FIG. 4 is a bottom view taken along a chain line BB in FIG. 3; FIG. 5 is a diagram for explaining the operation of a conventional dial cam operating device. FIG. 6 is a view for explaining the operation of a conventional dial cam operating device. FIG. 7 is a perspective view of a transfer jack incorporated in the dial cam operating device. [Description of Signs] 5 rotary dial 6 transfer jack 7 inside ring cam 8 outside ring cam 10 press-out cam 11 press-in cam 20 auxiliary press-out cam 23 actuator

──────────────────────────────────────────────────の Continuation of the front page (56) References JP-A-58-8165 (JP, A) JP-B-50-39746 (JP, B1) JP-B-48-43989 (JP, B1) JP-B-48-48 43988 (JP, B1) Japanese Patent Publication No. 44-2076 (JP, B1) Japanese Patent Publication No. 38-1526 (JP, B1) Patent 66568 (JP, C2) (58) Fields investigated (Int. Cl. ⁷ , DB name) ) D04B 9/46-9/56 D04B 1/26

Claims (1)

(57) [Claims 1] An inside ring cam and an outside ring cam for radially moving a short bat transfer jack and a long bat transfer jack arranged half a circumference of the rotary dial. A press intercom that pulls each transfer jack inward of the rotary dial, and a press outcomb that pushes each transfer jack out of the rotary dial are provided.At the time of make-up, the loop of the knitting needle is transferred to the transfer jack, At the end of the up, in the dial cam operating device that transfers the loop of the transfer jack to the knitting needle, an auxiliary press outcam is provided so as to be able to move up and down immediately before the press out cam. At the beginning of action Dial cam actuating device, characterized in that the small distance between the tip of the last short butt transfer jack adjacent without the action of the tip portion and the press outcomes length butt transfer jack.