ITMI990478U1 - JACQUARD KNITTING MACHINE WITH BOTTOM KNIT CONTROLLED WITH PROCESSOR - Google Patents

Description

Title: "BOTTOM KNIT JACQUARD KNITTING MACHINE CONTROLLED WITH PROCESSOR"

TEXT OF THE DESCRIPTION

The present invention relates to a computer controlled base knit jacquard knitting machine, and more particularly to such a computer controlled base knit jacquard knitting machine in which each yarn feeder has a recessed part for receiving a corresponding change head of color.

Most of the manufacturers of knitting machines are heavily seeking to improve jacquard knitting techniques in order to knit versatile jacquard fabrics. In order to produce a multi-colored jacquard design, color change heads are installed to supply threads of different colors. When using the color change heads, the thread feeders must be removed from the jacquard knitting machine. If the color changing heads are installed directly into the jacquard knitting machine without removing the thread feeders, the thread feeders will be damaged by the thread changing table at each color changing head.

The present invention has been designed to provide a computer controlled bottom knit jacquard knitting machine which eliminates the aforementioned problem. According to the present invention, the yarn feeders each have a recessed part. When the color change heads are installed, they are respectively received in the recessed part of each yarn feeder. Therefore the yarn feeders and the color changing heads can be installed concomitantly in the jacquard knitting machine without causing any disturbance.

In the accompanying drawings:

Figs. 1A-1D illustrate the mutual positions of the needles, the first needle sinkers, the second needle sinkers, the lifting cams and the needle selector in accordance with the present invention.

Fig. 2 is an enlarged view of a part of a yarn feeder according to the present invention.

Figs. 3A and 3B illustrate an action of the needles in the lifting cams.

Figs. 4A and 4B illustrate another action of the needles in the lifting cams.

Figs. 5A and 5B illustrate yet another action of the needles in the lifting cams.

Fig. 6 is an enlarged view of a bottom knitted jacquard fabric worked in accordance with the present invention.

Referring to Figs. 1A to 1D, a computer controlled bottom knit jacquard knitting machine is shown consisting of a series of thread feeders 1 supported on the machine base (not shown) thereof, a series of needles 2 mounted in the needle cylinder (not shown), a first series of needle sinkers 4 respectively coupled to the needles 2 at the bottom side, a series of second needle sinkers 5 respectively coupled to the first needle sinkers 4 at the bottom side , pairs of lifting cams 3 and 3 'controlled to lift the first needle sinkers 4 and needles 2, and a needle selector 6 mounted in a cap (not shown) and controlled so as to selectively raise the second sinkers d 'Aug 5.

The thread feeders 1 each comprise a threading hole 11 or 12 through which a bottom thread 7 or front thread 8 is inserted, a recessed part 13 and a ceramic hole 14. The needles 2 each comprise a needle bead 21 and a coupling part 22 adjacent to the needle heel 21. The first needle sinkers 4 each comprise a head 41 and a front coupling part 42 coupled to the coupling part 22 in correspondence with one of the needles 2. The second needle sinkers 5 each comprise a head 51 and a front housing 52 which receives the rear end of one of the first needle sinkers 4. The pairs of lifting cams 3 and 3 'each include a first lifting cam 3 and a second lifting cam 3 '. The first lifting cam 3 comprises an outer rail 31, an inner rail 32, a first protruding block 31a in the outer rail 31 and a second protruding block 32a in the inner rail 32. The second lifting cam 3 'comprises an outer rail 31', an inner rail 32 ', a first protruding block 31a' and a second protruding block 31b 'in the outer rail 31', and a third protruding block 32a 'in the inner rail 32 .

The needle selector 6 is controlled by an external processor comprising a plurality of selector sinkers 61 corresponding to the second needle sinkers 5. The selector sinkers 61 are moved selectively between a horizontal position and a vertical position. When a selection plate 61 is moved to the horizontal position, it is stopped under the head 51 of the corresponding second needle plate 5, to allow the corresponding second needle plate 5 to be moved to raise the corresponding first needle plate. 4 and the corresponding needle 2.

Referring to Fig. 2, the recessed part 13 at each of the yarn feeders 1 is provided to receive corresponding color change heads 15 of a color change unit of the computer controlled bottom stitch jacquard knitting machine, and therefore the yarn feeders 1 are not an obstacle to the color change heads 15. Furthermore, the ceramic hole is provided at the bottom end of the recessed part 13. When using the jacquard knitting machine with controlled bottom mesh with computer for knitting an elastic fabric, the elastic thread can be arranged in the ceramic hole 14.

Referring to Figs. 3A and 3B, the lifting cams 3 and 3 'are rotated by the knitting machine, the needle bead 21 of each needle 2 and the head 41 of each first needle plate 4 are respectively moved into the outer rail 31 and rail 32 at a first lifting cam 3, and the needle bead 21 of each needle 2 is moved over the left slope of the second protruding block 32a to the corresponding first lifting cam 3, so that the needle 2 is raised. Thereafter, each needle 2 is lowered along the first protruding block 31a into the first corresponding lifting cam 3 to pick up a bottom thread 7. Then the needle bead 21 of each needle 2 and the head 41 of each first platen. needle 4 are respectively moved in the outer rail 31 'and in the inner rail 32' in correspondence with a second lifting cam 3 ', and the needle bead 21 of each needle 2 is moved on the left slope of the third protruding block 32a' to the corresponding second lifting cam 3 'so as to cause the needle 2 to be raised, and therefore the needle 2 is moved along the second protruding block 31b' in the external rail 31 'to the corresponding second lifting cam 3' to make part A shown in Fig. 6.

Referring to Figs. 4A and 4B, after passing through the corresponding first lifting cam 3, the needle bead 21 of each needle 2 and the head 41 of each first needle sinker 4 are respectively moved into the outer rail 31 'and into the inner rail 32 'at a second lifting cam 31. When each needle 2 is moved along the first protruding block 31a' at a second lifting cam 3 ', the selection plates 61 of the needle selector 6 are in the state selection plates 61 are respectively stopped at the head 51 of each of the second needle sinkers 5 to raise the second needle sinkers 5 and the first needle sinkers 4 and therefore the head 41 of each of the first needle sinkers 4 is respectively spaced above the third protruding block 32a 'at each of the second lifting cams 3', i.e. each needle 2 is moved through the outer side of the corresponding third protruding block 32a 'and then lowered along the corresponding second protruding block 31b' to complete a vacuum knitting stroke, i.e. to make a bottom knitting jacquard knitting ( see part B shown in Fig. 6).

Referring to Figs. 5A and 5B, when the needle bead 21 of each needle 2 and the head 41 of each first needle sinker 4 are respectively moved into the outer rail 31 and inner rail 32 of a first lifting cam 3, and the bead of needle 21 of each needle 2 is moved above the left slope of the second protruding block 32a to the corresponding first lifting cam 3, each needle 2 is raised and then moved towards the first protruding block 31a to the corresponding first lifting cam 3. When the needle bead 21 of a needle 2 is raised towards the flat surface part of the corresponding first protruding block 31a and the corresponding selection plate 61 is selected, the head 51 of the corresponding needle plate 5 is pushed upwards by the corresponding selection plate 6 so as to cause the corresponding first needle plate 4 to be raised by the second protruding block 32a and therefore the needle 2 is moved through the side of the corresponding second protruding block 32a and after this the needle 2 is lowered along the corresponding first protruding block 31a to pick up a bottom thread 7, and therefore the needle bead 21 of the needle 2 and the head 41 of the corresponding first needle sinker 4 are respectively moved in the outer rail 31 'and in the inner rail 32' to the corresponding second lifting cam 3 ', and the needle bead 21 of each needle 2 is moved above the left slope of the third block protruding 32a 'to the corresponding second lifting cam 3' so as to cause the needle 2 to be raised, and therefore the needle 2 is lowered along the second protruding block 31b 'in the external rail 31' to the corresponding second lifting cam 31 'to pick up a front thread 8 so as to make part C shown in Fig. 6.

Claims (4)

CLAIMS 1. Computer controlled bottom knit jacquard knitting machine comprising: a series of thread feeders (1), said thread feeders (1) each comprising a recessed part (13) corresponding to the color change heads of the machine for jacquard knitwear; a set of needles (2) mounted on a needle cylinder in the jacquard knitting machine; a series of first needle sinkers (4) respectively coupled to said needles (2) at a bottom side; a series of second needle sinkers (5) respectively coupled to said first needle sinkers (4) at a bottom side; lifting cam means (3, 3 ') controlled for lifting said needles (2) and said first needle sinkers (4), said lifting cam means (3, 3') comprising an external rail (31, 31 '), an inner rail (32, 32'), said outer rail comprising needle lifting guide blocks (31a, 3ia '), flat guide blocks and needle drop guide blocks (31b') respectively arranged in the order, said inner rail (32, 32 ') comprising needle lifting guide blocks (32a, 32a'); and a needle selector (6) mounted below said lifting cam means (3, 3 '); characterized in that said lifting cam means (3, 3 ') are driven so as to move said needles (2) and said first needle sinkers (4), and said needle selector (6) is controlled to drive selectively said second needle sinkers (5) causing the corresponding first needle sinkers (4) to be moved away from the descent guide blocks (31b ') in said inner rail (32, 32') so as to provide a jacquard knit effect at the bottom. 2. Computer controlled bottom knit jacquard knitting machine of claim 1 characterized in that said yarn feeders (1) each comprise a ceramic hole (14) at a bottom end of the recessed part (13). 3. Computer controlled bottom knit jacquard knitting machine of claim 1 characterized in that a color change head (15) is disposed over the recessed portion (13) at each of said yarn feeders (1) . 4. Computer controlled bottom knit jacquard knitting machine of claim 2 characterized in that an elastic thread is arranged in the recessed part (13) at each of said thread feeders (1).