JPS5949354B2 - Needle selection device in knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a needle selection device for a knitting machine that sorts knitting needles into two groups, front and back, for pattern knitting. To provide a needle selection device for a knitting machine which can obtain a state in which no sorting is performed without any sorting, and which can be switched by an extremely simple operation.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. 4. Knitting needle 6 through 5
are supported in a row so that they can be moved back and forth and up and down.

Reference numeral 7 denotes a butt protruding upward from the middle part of the needle stem 6a of the knitting needle 6, which is used to connect the needles of the grooved plate 8 mounted between the first member 2 and the second member 3 of the needle bed 1. It passes through the groove 9 upward,
On the other hand, on the lower surface of the needle shaft 6a in the vicinity of the butt 7, each tip of a spring member, for example, a comb-like leaf spring 11, whose base end is supported by the third member 10 below the first member 2, is pressed from below. The plate spring 11 pushes each knitting needle 6 up to a position where it touches the fourth member 12 at the rear of the upper part of the second member 3, so that it is always placed in the upper position.

Reference numeral 13 denotes a selective support member, so-called pattern plate, which is provided below the fourth member 12 and further below the needle stem 6a of the knitting needles 6. The convex portions 13a provided at intervals of every eight of the knitting needles 6 and shifted by one pitch of the knitting needles 6 as a whole correspond to the needle stems 6 of the knitting needles 6.
The receiver supports the needle stem 6a in correspondence with each one of the needle stems 6a.

However, this pattern plate 13 has a groove 14 around it behind it.
a, and a signal (
In this embodiment, the detectors 16 (24 in this embodiment) are displaced to two positions up and down according to 24), and when the detectors 16 are in the raised position, they engage with the short rod portion 16a and lengthen it. A rotary cam 17 that swings left and right around the rod portion 16b, and a hanging plate that is connected to the short rod portion 16a of the detector 16 and supports its intermediate portion in response to the swinging thereof, is used as a fulcrum to horizontally swing the tip portion. The above-mentioned lateral movement is carried out by a mechanism 19 known, for example, in Japanese Patent Publication No. 7900/1983, which comprises operating rods 18 (24 in this embodiment) that laterally moves each of the pattern plates 13 by half a pitch of the knitting needles 6. Therefore, the convex portion 13a does not correspond to the working position corresponding to the needle stem 6a of the knitting needle 6. In other words, the needle stem 6a
The rotary cam 17 in the mechanism 19 is linked to the sliding movement of the carriage 20, which will be described next. One state is shown in FIG.

Now, the carriage 20 is mounted on the needle bed 1 so as to be able to slide from side to side, and is equipped with a needle selection cam 21 in the shape of an approximately right triangle shown in FIG. 5 at the rear. The rear end of the needle stem 6a of the knitting needle 6 is bent to form a protrusion 22 that protrudes upward, and the protrusion 22 is inserted into the needle selection cam 21, especially when the knitting needle 6 is placed in the normal upper position. It is designed to engage with the oblique side part.

Further, the carriage 20 has a well-known structure capable of forming various passages 23, such as a tuck passage and a front and rear knitting passage for two-color simultaneous knitting lines as shown in the figure, for guiding the butt 7 of the knitting needles 6 in the front and rear intermediate portions of the carriage 20. A knitting cam unit consisting of a fixed cam, a movable cam, etc. is provided.

Reference numeral 24 denotes a suppressing member, which is vertically movably inserted into vertical through-holes 25 corresponding to the butt passages at the front and rear intermediate portions on both left and right sides of the carriage 20, and which suppresses the butt of the knitting needles 6. The lower end in contact with 7 forms a V-shape as shown in FIG. 4, and a hole 26 is formed in the middle part above this.

Reference numeral 27 indicates the base plate 2 of the carriage 20 in close proximity to the pressing member 24.
The bent end of the leaf spring attached to the plate spring 8 is engaged with the hole 26 of the pressing member 24, and the pressing member 2
4 is always kept in an upper, inactive position where it does not press the butt 7 of the knitting needle 6.

Reference numeral 29 denotes a rotary lever located behind the suppressing member 24 and supported so as to be movable up and down by a shaft 31 fixed to a support 30 shown in FIG. Together with the switching member 33, the rotary lever 29 has its front tip resting on the upper surface of the pressing member 24, and the intermediate portion between the tip and the shaft 31. It has a trapezoidal projection 29a on its upper surface.

The operating piece 32 is disposed on the carriage board 28 side by side with the rotary lever 29 so as to be movable back and forth by means of a screw 34 and a long hole 35, and has a substantially inverted shape and also serves as a knob above it. An operating portion 32a exists above the rotating lever 29 and faces the projection 29a from the rear.

Note that 36 and 37 are the horizontal base 3 of the operation piece 32.
2b, there are V-shaped recesses formed in the front and rear parts on the side edge opposite to the rotary lever 29, and the plate spring 38 mounted on the carriage base plate 28, especially the V-shape The tip is adapted to engage with a corresponding one at either the front or rear of the operation piece 3-2, and the first
In the state shown in the figure, the leaf spring 38 engages with the front four parts 36 to keep the operating piece 32 in the rearward position shown.

Next, to describe the operation, first assume that the entire body is in the state shown in FIG.
When moved to the forward position, the rear recess 37 engages with the leaf spring 38 instead of the front recess 36, as shown in FIG. The rotation lever 29 is operated by the operating section 32a.
is pressed against the protrusion 29a, and the rotary lever 29, which has been pressed against the protrusion 29a, rotates as shown in FIG. However, the pressed suppressing member 24 is held at the operating position.

Next, the carriage 20 is slid to perform pattern knitting and needle selection, and when the carriage 20 is slid, for example, in the direction of the arrow shown in FIG. The butts 7 of the knitting needles 6 are guided separately to the front and rear knitting paths shown by chain lines, and two-color simultaneous knitting is performed by a well-known method. After merging at the knitting cam on the opposite side in the moving direction and being aligned and guided as shown in the figure, they are sequentially forcibly moved downward by the pressing member 24.

However, at this time, the convex portion 13a of the pattern plate 13, which is activated by the mechanism 19 depending on the presence or absence of the pattern signal hole 15a of the pattern card 15, can be lowered depending on whether or not the convex portion 13a of the pattern plate 13 exists below the needle stem 6a. There are some that cannot be lowered and others that can be lowered, and of these, the one that cannot be lowered because it is supported by the protrusion 13a of the handle 13 because the protrusion 13a of the handle 13 is located below the needle stem 6a is shown in FIG. As shown in FIG. 6
As a result, the protrusion 22 at the rear end, which has been slightly raised, comes into contact with the needle selection cam 21 and is engaged with the needle selection cam 21, so that it is guided by its oblique side and moves rearward as shown in FIG. Thereafter, it is guided by the cam surface 39 shown in the same figure and moved backward to the rear position, which is the knitting preparation position, and comes out of the carriage.

On the other hand, the convex portion 13a of the pattern plate 13 is not located below the needle stem 6a, and the knitting needles 6, which can go down, go down as they are when they receive the pressing blade from the aforementioned pressing member 24, as shown by the two-dot chain line in FIG. Since the protrusion 22 is placed at a lower position to avoid the needle selection cam 21, the butt 7 of the knitting needle 6 is guided in the lateral direction without being moved in the front-rear direction and comes out of the carriage.

In this way, the knitting needles 6 can be sorted into two groups: those in which the knitting needles 6 are kept at the front position for pattern knitting, and those in which the knitting needles 6 are moved to the rear position.

It goes without saying that such sorting of the knitting needles 6 is performed uniformly in both directions by sliding the carriage 20 in both left and right directions.

Now, in contrast to the above, when the operation piece 32 is moved to the rear position, the front recess 36 is pressed against the leaf spring 38 as described above.
The operating piece 32 is held at the rear position by engaging with the operating piece 32, and at this time, the operating part 32a of the operating piece 32 separates rearward from the protrusion 29a of the rotating lever 29 to prevent the rotating lever 29 from being depressed. Therefore, as shown in FIG.
It is held in the upper position, which is the inactive position, by
Therefore, all of the knitting needles 6 are kept in the upper position by the leaf spring 11, and the protrusion 22 at the rear end is engaged with the needle selection cam 21, and all of them are moved rearward in the same manner as described above.

All of these needles are used for ordinary plain knitting, and the knitting needles 6 sorted into the two groups of front and back mentioned above are used for pattern knitting.

In the above embodiment, the needle selection cam 21 engages with the protrusion 22 of the knitting needle 6 in the upper position to move the knitting needle 6 backward, but the present invention is not limited to this. It may be possible to move the knitting needles 6 at the position, and the direction of movement may also be forward, opposite to the above-mentioned direction.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be implemented with appropriate modifications within the scope of the invention.

As explained above, the present invention is a needle selection device in a knitting machine that sorts knitting needles into two groups, front and back, for pattern knitting, and in which a pressing member is placed in an operating position by a switching member provided therein. If this is done, knitting needles can be sorted into upper and lower groups by the pressing member and the selection support member, and based on the upper and lower sorting, the knitting needles can be sorted into two groups, front and rear, by the needle selection cam. By arranging the member in the inactive position, the knitting needles can be made independent of the pressing member and the selection support member, so that it is possible to prevent the knitting needles from being sorted into two groups, the front and rear groups, and in particular, it is possible to prevent the knitting needles from being sorted into the front and rear groups. Since the switching simply involves switching the suppressing member from the active position to the non-active position or vice versa by the switching member, the desired effect can be achieved with an extremely simple operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of the entire device with the pressing member in its inactive state, FIG. 2 is a plan view of the carriage portion in its activated state, and FIG. The figure is a longitudinal sectional side view of the entire device, FIG. 4 is a rear view of the same, and FIG. 5 is a bottom view of the carriage portion. In the figure, 1 is a needle bed, 6 and 6a are knitting needles and their needle stems, and 11
13 and 13a are leaf springs (spring members), 13 and 13a are pattern plates (selective support members) and their protrusions, 20 is a carriage, 21 is a needle selection cam, 22 is a protrusion (the rear end of the knitting needle), 24 is a suppressing member, 2
9 and 29a are rotating levers and their projections, 32 and 32
33 is a switching member.

Claims (1)

[Scope of Claims] 1. A selective support member is provided on a needle bed in which knitting needles are arranged and supported so as to be movable back and forth and up and down, and selectively receives the lower surface of the needle stem of the knitting needle and positions the knitting needle in an upper position, The carriage, which is mounted on the needle bed so as to be slidable from side to side, engages with the rear end of only the knitting needles placed in either the upper or lower position by the selection support member to move the knitting needles forward or backward. In a needle selection device equipped with a needle selection cam that performs moving selection, each of the knitting needles is always placed in an upper position by a spring member, and the knitting needles are sequentially pushed down onto a carriage corresponding to the needle selection cam. A suppressing member is provided, which causes the knitting needles to act on the selection support member, thereby sorting the knitting needles vertically into those that engage with the needle selection cam and those that do not engage, by a cooperative action with the selection support member; The suppressing member is movably arranged between an active position in which it engages with each of the knitting needles and presses down, and an inactive position in which it does not press down, and the pressing member is moved from one of the two positions to the other. A needle selection device for a knitting machine, characterized by comprising a switching member for switching. 2. A rotary lever that moves and arranges the pressing member from one of the two positions to the other by rotating the switching member around a single axis, and a rotary lever that rotates the rotary lever and holds it in the rotated position. A needle selection device in a knitting machine according to claim 1, characterized in that the needle selection device is constituted by an operation piece.