JPS6241991Y2 - - Google Patents

Description

[Detailed description of the invention] [Subject of the invention] The present invention is a yarn feeding device for a hand-knitting machine that is equipped with a front yarn opening and a rear yarn opening that allow insertion and removal of knitting yarn at the front part of the carriage, and a yarn feeding auxiliary member. It is related to.

[Prior art]

As shown in Japanese Patent Application No. 57-071866, the latch of the knitting needle in this kind of conventional yarn feeding device is opened by the brushes on the left and right sides of the yarn feeding auxiliary member and the latch engaging edges of the yarn feeding auxiliary member. The yarn passes below the yarn feeding auxiliary member and is fed to the knitting needle from the yarn feeding port of the yarn opening.

[Problems with conventional technology and their technical analysis]

In the above-mentioned prior art mechanism, when the carriage is moved at high speed to perform two-color simultaneous knitting, the latch of the knitting needle in the knitting path moves blindly and stands up within the notch of the yarn feeding auxiliary member, and the latch of the knitting needle in the knitting path moves blindly and stands up in a part of the notch. There was an undesirable risk that the latch tip would hit the provided knitting yarn engaging edge, causing the latch to bend. In order to solve this problem, there is a technology (Utility Application No. 174850/1983) in which a latch prevention member is provided in the knitting yarn insertion/removal groove formed by the knitting yarn guide surfaces of the front yarn opening and the rear yarn opening. . Although this technical mechanism can prevent the knitting needle latch from standing up in a blind motion, since the blind motion prevention member is provided in the knitting yarn insertion/removal groove, the insertion and removal of the knitting yarn tends to lack smoothness. That is, if the time for inserting the yarn into the yarn feeder is delayed, there is a risk that the stitches will be dropped at the ends of the knitted fabric, and that the knitting yarn will be caught and the prevention member will be deformed.

[Technical issues]

An object of the present invention is to prevent the latch from colliding with the upright movement of the latch without providing a separate member for preventing blind movement of the latch, and to facilitate insertion and removal of knitting yarns.

[Technical means]

In the present application, the above-mentioned problem was solved by the following means.

That is, in order to insert the front and rear lower yarn feeding ports, a yarn feeding auxiliary member having a notch formed in the center is opened at a slightly higher position on both outsides of the yarn feeding ports. The thread latch was placed horizontally to maintain the opening.

One end of this notch forms a knitting yarn guide edge that cooperates with each yarn guiding surface, which is a backward facing surface at the front yarn opening and a forward facing surface at the rear yarn opening,
The open end side of the other end is an insertion part that is inserted into the insertion hole of the rear yarn opening, and the knitting yarn guided by the knitting yarn insertion/removal groove on the open end side is slightly higher than the lower payout opening of the front and rear yarn openings. A knitting yarn engaging edge that locks in position is provided. The line edge surface connecting the insertion portion and the knitting yarn engaging edge is adapted to engage with the rear surface of the latch of the knitting needle that stands up within the notch.

[Effect of technical means]

Therefore, the latch back surface of the knitting needle that stands up blindly within the notch of the yarn feeding auxiliary member engages with the line edge surface that connects the insertion portion and the knitting yarn engaging edge, so that the knitting needle is attached to the fabric presser plate. The front part of the carriage is raised slightly by the raised part, and the latch that opens during the carriage's retreat is closed by a retraction cam, swing cam, etc. on the underside of the carriage.

[Special effects of the present application]

Since the opened latch is reliably closed while the knitting needle is retracting, damage caused by the tip of the latch hitting the knitting yarn engaging edge is prevented, and since the latch blind movement prevention member has been eliminated, the front and rear yarn openings are protected. The knitting yarn can be inserted into the yarn feeder properly and quickly, and the yarn can be reliably fed to the knitting needle hook at the end of the knitted fabric. In addition, the reduction in parts contributes to rationalization in terms of assembly and production, costs, etc.

〔Example〕

Fig. 1 shows a hand knitting machine equipped with a carriage equipped with the yarn feeding device of the present invention, where 1 is a needle bed, 2 is a carriage, 3 and 3' are knitted fabric presser plates, 4 is a support plate, and 5 is a carriage. The front clue and 6 are the rear clues. Reference numeral 7 denotes a yarn feeding auxiliary member which is arranged at the upper front part of the knitted fabric pressing plates 3, 3', and whose base end is fixed to the support plate 4 together with the base end 5a of the front yarn opening 5. A notch 7a is provided into which the lower feeding ports 5b and 6b of the front and rear yarn ports 5 and 6 are inserted. The yarn feeding auxiliary member 7 is placed at a slightly higher position on both sides of the lower feeding ports 5b and 6b, and is held approximately horizontally so as to keep the latch R of the knitting needle 8 opened in advance for yarn feeding. Placed. Moreover, the notch 7
A knitting yarn guiding edge 7b is provided at one end of a to form a knitting yarn insertion/removal groove 11 for guiding the knitting yarn in cooperation with the yarn guide surfaces 9 and 10 of the front yarn opening 5 and the rear yarn opening 6,
An insertion portion 7c inserted into an insertion hole 6a provided in the rear thread opening 6 is provided on the other open end side.

Then, it engages with the knitting yarn guided by the knitting yarn insertion/removal groove 11 on the open end side, and locks the knitting yarn at a position slightly higher than the lower feeding ports 5b and 6b of the front and rear yarn ports 5 and 6. A yarn engaging edge 7d is provided. Therefore, the insertion portion 7c and the knitting yarn engaging edge 7d
The line edge surface connecting the two becomes an inclined knitting yarn guide edge 7e that guides the knitting yarn to the rear yarn opening 6. This guide edge 7e and the back surface of the latch of the knitting yarn standing up blindly within the notch 7a form an engaging relationship during knitting. (See Figures 5 to 7) That is, the latch that stands up during knitting engages with the guide edge 7e, and the front part of the knitting needle 8 is slightly raised by the raised part 3'a provided on the knitted fabric presser plate 3', and It closes while the carriage 2 is being retreated by a retraction cam 12 and a swing cam 13 on the lower surface of the carriage 2.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a hand knitting machine equipped with the yarn feeding device of the present invention, Fig. 2 is a bottom view of the carriage, Fig. 3 is a partially cutaway enlarged side view explaining the main parts of the present application, and Fig. 4 is a FIG. 5 is a plan view explaining the structure and action; FIG. 6 is an enlarged vertical cross-sectional view explaining the structure and action; and FIG. 7 is an enlarged longitudinal sectional view explaining the structure and action. It is a longitudinal cross-sectional view of the main part of the explanation. 1...needle bed, 2...carriage, 3, 3'...knitted fabric presser plate, 4...support plate, 5...front thread opening, 6...back thread opening,
7... Yarn feeding auxiliary member, 7e... Knitting yarn guide edge.

Claims (1)

[Scope of utility model registration request] The yarn feeding device is equipped with a front yarn opening, a rear yarn opening that allows knitting yarn to be exchanged, and a yarn feeding auxiliary member that maintains the latch open state, at the front of a carriage mounted on the needle bed so as to be able to move from side to side. The front yarn opening is provided with a rear facing surface extending left and right, and the rear yarn opening is configured with a forward facing surface extending left and right. A knitting machine in which a notch is provided in which the yarn feeding port of the front yarn opening and the rear yarn opening are inserted, and a knitting yarn insertion/extraction groove is formed at one end of the notch to guide the knitting yarn in cooperation with the knitting yarn guide surfaces on both sides. The other end of the yarn guiding edge has a knitting yarn engaging edge that engages and locks the knitting yarn guided by the insertion part inserted into the insertion hole of the rear yarn opening and the knitting yarn insertion/removal groove. A yarn feeder for a hand knitting machine, which is provided between the insertion portion and the yarn engaging edge to guide the yarn to the rear yarn opening and to engage with the back surface of the latch that stands up when the knitting needles retreat. Device.