TWI470127B - Pusher for transferring stitches in a circular hosiery knitting machine - Google Patents

Abstract

A pusher, for transferring stitches in a circular hosiery knitting machine, has a shank (2), provided with a lower edge heel (3), and an active upper portion (4) which is suitable to transfer a stitch from one needle to another adjacent needle. The active upper portion has a bend (5) which, when viewed from the side, protrudes from the edge of the shank toward which the heel is directed and is formed by a first curved portion (6), by an intermediate portion (7) and by a rounded step (8); the intermediate portion is diverted to one side with respect to the plane of the shank, and ends, through the rounded step, with a second substantially straight portion (9); the second portion is parallel to the plane of the shank but offset with respect it; the second portion ends with a tip (11) through a third oblique portion (10) which is inclined in the opposite direction with respect to the intermediate portion; the tip protrudes, with respect to the plane of the shank, on the opposite side with respect to the one toward which the intermediate portion is diverted; at the second portion there is a first bevel (12) which allows the pusher, during the descending step, not to interfere with an adjacent pusher of the same fold and in an inactive position.

Description

Pusher for converting stitch length in a disc hosiery machine

The present invention relates to a pusher for converting a stitch length in a disc hosiery machine.

As is conventionally known, in a disc hosiery machine, when the shifting stitch length is required by the resulting knitting, the pusher is a member that converts the stitch length from one knitting needle to the other.

Due to the difficult folding and bending that is difficult to manufacture, the most common type of pusher manufacturing is quite complex.

Conventional pushers usually also cut the yarn.

It is an object of the present invention to provide a pusher that overcomes the shortcomings of the prior art.

It is an object of the present invention to provide a pusher that is simpler and less expensive than the conventional type of pusher.

Another object of the present invention is to provide a pusher that is likely to cut the yarns significantly less frequently.

This object, which will become more apparent hereinafter, and these and other objects are achieved by a pusher for converting the stitch length in a disc hosiery machine, the pusher comprising a handle provided with a lower portion The edge heel; and the upper portion of a movement, which is adapted to convert the stitch length from one knitting needle to another adjacent needle. The pusher is characterized in that the upper portion of the activity includes an elbow that protrudes from the edge of the handle toward the point pointed by the heel when viewed from the side; the elbow is caused by The first curved portion is formed by an intermediate portion and by a circular stepped portion; the intermediate portion is turned to a side with respect to the plane of the handle and passes through the circular shape The stepped portion ends with a second substantially straight portion; the second portion is parallel to the plane of the shank, but offset with respect to the plane of the shank; the second portion is third offset The inclined portion ends with a tip portion that is inclined with respect to the intermediate portion in the opposite direction; on the opposite side with respect to the one side surface, the tip portion protrudes with respect to the plane of the handle portion Further toward the intermediate portions, the pusher is characterized in that the first bevel is provided in the second portion, and during the step of descending, the pusher is allowed to not interfere with the same Fold the abutting pusher and in an inactive position.

Referring to the referenced drawings, the pusher according to the present invention is generally labeled with the reference numeral 1, which is formed by punching and bending a flat steel member. The pusher has a handle 2 that is provided with a lower edge heel 3 and an upper portion generally marked with the reference numeral 4.

Viewed from this side, the upper portion 4 of the movement is formed by an elbow 5 which projects from the edge of the shank towards the point where the heel 3 points.

The elbow 5 is formed by the first curved portion 6, by an intermediate portion 7, and by a circular stepped portion 8.

The intermediate portion 7 is turned to a side with respect to the plane of the handle 2, respectively to the right (as in FIG. 2) or to the left side, and passes through the circular stepped portion 8 to the second The part 9 of the straight line ends.

The second portion 9 is parallel to the plane of the shank 2 and is offset relative thereto.

The second portion 9 ends with a pointed portion 11 passing through a third deflecting portion 10 which is inclined with respect to the intermediate portion 7 in the opposite direction.

Therefore, on the opposite side with respect to the side on which the intermediate portion 7 is turned, the tip portion 11 protrudes with respect to the plane of the shank portion 2.

According to a particular aspect of the invention, the first bevel 12 is provided manually by a milling machine, grinder or another device, or even at the second portion 9. The first bevel 12 allows the pusher 1 to not interfere with the adjacent pusher of the same elbow and in an inactive position during the step of lowering.

The third deflecting portion 10 also has a second beveled angle 13 having a function similar to the first beveled angle 12.

Another feature of the present invention is constituted by a third grinding bevel 14 which is provided in the first curved portion 6, which is adapted to weaken the pusher because The curved portion 6 is relatively thin, leaving more room for expansion and contraction in the jaws of the cylinder, the pusher sliding in the cylinder.

The circular stepped portion 8 forms a groove 15 along with the second portion 9, the groove being sufficiently deep and having the function of a latch opener.

When the pusher loads the loop of the knitted fabric and configures itself for the needle, and the loop is to be conveyed on the needle, the needle tends to rise, and if the tongue is not When properly closed, the needle is opened and lowered by the yarn itself.

A sufficiently deep groove allows the knit yarn of the loop of the knitted fabric to be placed in position and is advantageously used as a needle opener.

According to another feature of the invention, inductive tempering is performed to obtain a tip that is stiffer than the body of the pusher, the body of the pusher has been tempered, but has insufficient hardness.

The induced tempering of the tip allows for an extension of the average operating life of the pusher.

All edges of the active portion of the pusher are rounded by machining to avoid cutting the yarns, and the warp yarns slide over the edges.

In a guide groove, the pusher according to the present invention is assembled in a disc hosiery machine by interleaving the pusher between the two needles 30 in a parallel configuration, as outlined in FIG. Displayer.

The pusher is configured such that the tip 11 enters the recess provided in the first needle 30 in a manner known per se, and such that the third deflected portion 10 is beyond the second needle On a plane of 31, the second knitting needle 31 is disposed on the other side of the pusher.

The second knitting needle 31 can pass between the handle of the pusher and the third deflecting portion 10 in a vertical direction, the third deflecting portion being parallel to the handle of the pusher.

The first knitting needle 30 is disposed on one side of the pusher, adjacent to the tip portion 11, and the second knitting needle 31 is disposed on the other side of the pusher, and has a rise in the elbow 5 The possibility to the top of the stepped portion 8.

In this way, the pusher can take a knitting loop from the first knitting needle 30 with the tip 11, and turn the knitting loop to the second knitting needle 31 to keep the knitting loop in the step shape. Part 8 until it is taken by the second knitting needle 31.

By being mounted on the cylinder of the hosiery machine, the pusher is turned to the right or to the left, as shown schematically in Figure 7, which may be conveyed by a knitting needle to another knitting needle. Knitting the loops to form a knitwear with any pattern.

In fact, it has been found that the present invention achieves the intended object and objects, and has provided an improved pusher that is capable of transferring stitch length more efficiently and reliably than conventional pushers.

This application claims priority to Italian Patent Application No. MI2007A001532, filed on July 30, 2007, the disclosure of which is incorporated herein by reference.

1‧‧‧ Pusher

2‧‧‧ handle

3‧‧‧Lower edge heel

4‧‧‧The upper part of the event

5‧‧‧ elbow

6‧‧‧First bend

7‧‧‧Intermediary part

8‧‧‧ into a circular stepped part

9‧‧‧Parts consisting of the second straight line

10‧‧‧ Third skewed part

11‧‧‧ tip

12‧‧‧First bevel

13‧‧‧second bevel

14‧‧‧ Third grinding angle

15‧‧‧ trench

30‧‧‧First knitting needle

31‧‧‧Second knitting needle

The features and advantages of the present invention will become more apparent from the following description of the preferred embodiments of the present invention. Side view of the pusher of the present invention, the pusher There is a right-handed elbow for moving to the left side; FIG. 2 is a front view of the pusher of the above-mentioned drawing; FIG. 3 is a detailed view of one of the upper parts of the pusher of the above-mentioned drawing: Figure 4 is a detailed view of a lower portion of the pusher of the above-mentioned drawings; Figure 5 is a cross-sectional view taken along the plane V-V of Figure 3; Figure 6 is taken from along and Figure 3 A cross-sectional view of the same cut-away plane showing a pusher having a right-handed elbow for movement to the left; FIG. 7 is a configuration of the pusher of the disc hosiery machine A schematic diagram of an example.

1‧‧‧ Pusher

2‧‧‧ handle

3‧‧‧Lower edge heel

4‧‧‧The upper part of the event

5‧‧‧ elbow

6‧‧‧First bend

7‧‧‧Intermediary part

8‧‧‧ into a circular stepped part

9‧‧‧Parts consisting of the second straight line

10‧‧‧ Third skewed part

11‧‧‧ tip

12‧‧‧First bevel

13‧‧‧second bevel

14‧‧‧ Third grinding angle

15‧‧‧ trench

Claims (6)

A pusher for converting a stitch length in a disc hosiery machine, the pusher comprising a handle portion provided with a lower edge heel portion; and a movable upper portion adapted to be adapted from a knitting needle to another An advancing needle converts the stitch length, the pusher being characterized in that the upper portion of the movement includes an elbow that protrudes from the edge of the handle toward the point pointed by the heel when viewed from the side The elbow is formed by the first curved portion, by an intermediate portion, and by a circular stepped portion; the intermediate portion is turned to a side with respect to the plane of the handle And passing through the circular stepped portion ending with a second substantially straight portion; the second portion being parallel to the plane of the shank, but offset with respect to the plane of the shank; The two portions end through a third deflecting portion that is inclined in the opposite direction with respect to the intermediate portion; on the opposite side of the side on which the intermediate portion is turned The tip protrudes about the plane of the handle; further, the pusher is characterized by a first bevel For the second portion, and during the descent step of allowing the same does not interfere with the pusher in a folded position and an inactive in the adjacent pushers. The pusher of claim 1, wherein the third deflecting portion has a second bevel angle, the second bevel angle allowing the pusher to not interfere with the same folding and being inactive during the step of descending Adjacent pusher in the position. The pusher of claim 2, wherein the pusher includes a third grinding bevel, the third grinding bevel is disposed at the first curved portion, and is adapted to weaken a certain point of the pusher so that Conducive to the activity The square portion is telescoped against the shank of an adjacent needle to limit friction. The pusher of claim 1, wherein the circular stepped portion forms a sufficiently deep groove with the second portion, the groove having a latch opener. A pusher according to claim 1, wherein the tip is subjected to induction tempering so that the tip is stiffer than the body of the pusher. A pusher according to claim 1, wherein all edges of the movable portion of the pusher are rounded by machining to avoid cutting the yarn, and the yarn is on the edges slide.