JPS6132424B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a needle selection device for knitting needles in the next knitting course in an automatic stockinette knitting machine.

In the conventional knit and tack needle selection device, the jack and needle selector are sequentially accommodated in the groove in which the knitting needles are accommodated, following the needle knitting, and the needle selector is first selected and the jack is activated. The accompanying knitting needles are used to selectively protrude the knitting needles at the knit position and the tuck position. It was inevitable that the mechanism for giving the jack and needle selector the knit and tuck selection movements, respectively, would become complicated.

The present invention improves the above-mentioned disadvantages and significantly improves the conventional selection mechanism by using two needle selectors following the jack in parallel, and using one of them for selecting between knit and tack. This is a simplified method in which knitting needles are housed in each needle groove of the needle bed, followed by one jack, followed by two needle selectors, which are arranged in parallel and moved up and down within the grooves. Both needle selectors are movable in the groove so that their upper parts can be engaged with and disengaged from the rear of the jack. A cam device that restores and lowers the jack from the protruding position to the inoperative retreat position, and a cam device that acts on the butt of the jack to guide it to two high and low height positions and then returns and lowers it to the starting position. Furthermore, a cam that individually moves the two needle selectors up and down a predetermined height, a selection device that tilts the two needle selectors individually so that they do not engage with the jack, and restoration of the tilting. It is characterized by being provided with a device.

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

In the drawing, 1 is a needle bed, 2 is a needle groove arranged in parallel in the length direction, and within the needle groove 2 is a knitting needle 3, followed by a jack 4, and further thereafter a knitting needle 2 as shown in the second figure.
This is different from the conventional method in that book needle selectors 5 and 6 are housed in parallel, and before the knitting operation, they wait in a lower inactive position and move upward in the groove 2 in response to an operation command to perform their respective operations. Instead, the two needle selectors 5 and 6 housed in parallel are housed in the groove 2 so that they can be raised and lowered around the middle lower edge, and in normal conditions, they are moved downward by a presser cam as will be described later. The upper end faces the rear of the jack 4.

As shown in FIG.
2b, and a spacer piece 2 between both grooves 2a and 2b.
By intervening the needle selector c, the individual raising and lowering movements of the needle selectors 5 and 6 are performed regardless of the other,
Eliminates the malfunction of raising and lowering one side while simultaneously raising and lowering the other.

In addition, knitting needles 3, jacks 4, and two needle selectors 5,
6 is held in the fixed position shown in FIGS. 1 and 2 by regulation control.

The cam plate 7 of the knitting carriage includes a cam device 8 that acts on the butt 3a of the knitting needle 3, a cam device 9 that acts on the butt 4a of the jack 4, and two butts for upward movement of the needle selectors 5 and 6 in front and behind. cams 10 and 11 that act separately on 5a and 6a, and butts 5b for downward movement;
A cam 12 that acts in common with 6b is provided.

In addition, two needle selectors 5 and 6 are housed in the groove 2 in parallel.
The upward movement butts 5a, 6a are provided with their positions shifted vertically.

As shown in FIG. 3, the cam device 8 is composed of a downward ridge that pushes down the knitting needle 3 to the above-described fixed position, and the cam device 9 moves the butt 4a of the jack 4 to courses a and b at two different height positions. The cams 10 and 11 are composed of a single chevron-shaped cam, which is connected to the upward movement butt 5a of the needle selectors 5 and 6. , 6a, and are arranged above and below to correspond to the positions of cam plates 7 and 6a, and cam plates 7 are arranged above and below to correspond to the positions of the reciprocating movement of the carriage.
One set of cams are arranged on the left and right sides from the center of the carriage, and the cams of the front set in the traveling direction of the carriage protrude from the surface of the cam plate 7 so that they are in the operating position, and the cams of the other sets are made to appear and disappear alternately so that they are recessed. . Also, a cam 12 that acts in common on the downward movement butts 5b and 6b.
is arranged long in the length direction of the cam plate 7, and the cam 1
Defect 12' on the cam surface at the position relative to 0,11
was formed.

The cam plate 7 further has a large number of grooves 2 arranged according to instructions.
A selection device 13 is provided which selects one of the needle selectors 5 and 6 and tilts it. This selection device 13 uses, for example, a protrusion 13a configured to instantaneously protrude and immediately retract in response to an electric signal, and presses protrusions 5c and 6c formed on both needle selectors 5 and 6, respectively. .

Further, this selection device 13 requires that the protrusions 13a advance to press the protrusions 5c, 6c of a large number of parallel needle selectors 5, 6 while the knitting carriage is running, and the operating time is extremely instantaneous. Therefore, in order to ensure a reliable pressing operation, a plurality of protrusions 5c and 6c are provided on the upper and lower sides (in the illustrated example, two protrusions each).
The same number of needle selectors 3a are provided opposite to the needle selectors 5, 6 to ensure that the needle selectors 5, 6 are pressed and tilted by the engagement between one of the protrusions 13a and the protrusions 5c, 6c. is provided in the center of the cam plate 7 so that one selection device 13 can be used for the knitting work of the reciprocating movement of the carriage. A pair of selection devices acting on the needle selectors 5, 6 may also be provided.

As mentioned above, the two needle selectors 5 and 6 housed in the needle grooves 2a and 2b respectively have their upper ends connected to the jack 4.
The cam plate 7 is moved so that it is in the downward movement position facing the rear tail.
The upper end is held down by a presser cam 14 provided on the
The presser cam 14 includes one whose upper end is moved upward by being tilted by the selection device 13 during forward operation, and the upper end is moved upward by the presser cam 14 before all the needle selectors face the selection device 13. It is provided in the front position of the selection device 13 so as to face the rear of the jack 4.

Incidentally, the one selected by the selection device 13 and tilted within the groove 2 so that the upper end floats upward from the rear of the jack 4 is no longer engaged with the jack 4.

In Figure 3, selection cam 1 appears for transfer.
5 and a corresponding operating cam 16 are shown.

Next, the operation of this device will be explained.

As shown in FIG. 3, when the selection device 13 is provided at the center of the cam plate 7 and used for the reciprocating movement of the carriage, the selection device 13 is attached to the needle selectors 5 and 6 of the needle row that has completed the knitting operation in the previous course knitting. The selection device 13 is actuated to instruct the knitting needles 3 to knit and tuck in the next course. Therefore, in the knitting course in which the cam plate 7 moves together with the carriage in the direction of the arrow in FIG. The selection device 13 selects needles 5 and 6 for each needle during the previous course.
The command has already been given to the needle selector, and the instructed needle selector tilts in the groove as described above, and its upper end floats above the tail end of the jack 4, and the other needle selectors, that is, select Since the needle selector which is not commanded by the device 13 does not tilt within the groove 2, its upper end is in engagement with the tail end of the jack 4.

Therefore, when the cam plate 7 travels in the direction of the arrow, the butts 5 of the needle selectors 5 and 6 are in engagement with the jack 4.
Since the needle selectors a and 6a abut against the cams 10 and 11, respectively, the needle selectors 5 and 6 move upward, and the upward movement of the needle selector 5 that abuts the cam 10 causes the needle row to be pushed up at its upper end. The jack 4 of the needle row is guided to the upper course a in the cam device 49, and the jack 4 of the needle row that collides with the cam 11 and is pushed up by the upward movement of the needle selector 6 is guided to the upper course a in the cam device 9. After being guided to the lower course b, these jacks 4 are lowered to predetermined old positions by the lowering jacks.

Therefore, the knitting needles 3 in the 4th row of jacks guided to the course a are pushed up by the jack 4 and reach the knitting position shown by 3' in FIG. 3, and the knitting needles 3 in the 4th row of jacks guided to the b course are '' and performs each knitting operation.

Further, as described above, needle selectors 5 and 6 provide predetermined knit and tack operations to the jack 4 and knitting needle 3, respectively.
maintains a tilted state within the groove, but this is then restored to the engagement position with respect to the jack 4 by being suppressed by the presser cam 14, and all the needle selectors 5 and 6 are tilted toward the jack 4.
When the needle selector 5 or 6 faces the selection device 13 in the engaging position, one of the needle selectors 5 and 6 is tilted within the groove in response to a knit or tack command for the next course.

Thus, when the selection device 13 gives a command to the needle selector 6 to tilt it within the groove, the needle selector 5 engages with the jack 4 and guides the jack 4 to the a course of the cam device 9. 3 is in the knit position, and when a command is given to the needle selector 5 to allow it to tilt within the groove, the needle selector 6 engages with the jack 4 and guides the jack 4 to the b course of the cam device 9. Knitting work is carried out at the tack position, and when commands are given to both needle selectors 5 and 6 at the same time, the jack 4 does not operate and the knitting needles 3 of that needle row are at rest.

In this way, according to the present invention, by giving a command to one of the two selectors housed in parallel at the rear of the needle row by the selection device, the selection device sends a command through the jack housed in the same groove. This can be done by providing a selection device that selects one of the needle selectors and tilts it within the groove, and by moving a jack linked to the needle selector in two stages, high and low. The operating means is extremely simple by only providing a cam device for guiding the knitting needles to the height position, and has the effect of reliably providing the knitting needle with a selection of knit and tuck operations.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention.
2 is a partial front view of the needle bed, and FIG. 3 is an inner view of the cam plate showing the relationship between the knitting needles, the jack, the needle selector, and its operating cam. 1... Needle bed, 2... Needle groove, 3... Knitting needle, 4...
Jack, 5, 6...needle selector, 7...cam plate,
8, 9, 10, 11, 12, 14... cam device,
13... Selection device.

Claims (1)

[Claims] 1. In each needle groove of the needle bed containing the knitting needles, one jack following the knitting needles and two needle selectors following this are housed in parallel so that they can move up and down in the respective grooves, and Both needle selectors are designed to be able to freely rise within the groove so that their upper parts can be engaged with and disengaged from the rear part of the jack, and the cam plate of the knitting carriage acts on the butt of the knitting needle to remove it from the knitting protruding position. A cam device that moves the jack down to restore it to the operating retreat position, a cam device that acts on the butt of the jack to guide it to two height positions, and then returns it to the starting position and moves it down, and two needle selectors. A cam that moves each needle up to a predetermined height and then lowered, a selection device that moves the two needle selectors individually so that they do not engage with the jack, and a restoring device for the tilting are provided. A needle selection actuation device for a horizontal stockinette knitting machine characterized by: