JP2604657B2 - Needle control device at the time of transfer in flat knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitting needle control device for transferring stitches performed using a flat knitting machine.

[0002]

2. Description of the Related Art In recent years, it has been demanded that the knitting structure and pattern of a knitted fabric be complicated and colorful in accordance with diversification of fashion. In order to meet such demands, for example, a knitted fabric knitted with a front knitting needle by a flat knitting machine in which a needle bed having a plurality of knitting needles arranged side by side and a pair of front and rear arranged with the teeth of the knitting needles facing each other. In order to knit with a rear knitting needle or to knit a knitted fabric using both knitting needles, it is necessary to perform a so-called "transfer" for transferring a loop hooked on the knitting needle.

In this "transfer", a loop in which a transfer side knitting needle is hung by a loop expanding member formed on a side surface of a knitting needle is expanded by a loop expanding member, a so-called "blade", and is expanded. The transfer side knitting needle is lowered while the loop is hooked on the receiving side knitting needle, and the transfer is performed by clearing the loop from the hook of the transfer side knitting needle.

A knitting needle in a flat knitting machine is roughly classified into a latch, a so-called "bella", which is pivotally supported at a base end thereof at an opening of a hook formed at the tip of the knitting needle.
The opening and closing of the hook is opened and closed by a brush or a knitting yarn passing therethrough, and the opening of the knitting needle is opened and closed by a slider operated by a cam provided on a carriage. There is a compound needle.

In a flat knitting machine equipped with a latch needle, when a stitch is transferred from a knitting needle of a rear needle bed to a knitting needle of a front needle bed while the carriage is traveling to the left, a transfer side knitting needle (Tr) is used. The trajectory of the knitting needle with the receiving knitting needle (Rcv) is as shown in FIG. 1. In a flat knitting machine equipped with a compound needle, the trajectory of the knitting needle with the receiving knitting needle (Tr) and the receiving knitting needle (Rcv) is shown in FIG. It becomes as shown in.

[0006]

However, whether the transfer is performed by a flat knitting machine having a latch needle or a flat knitting machine having a compound needle, it can be seen from FIGS. 1 and 2. In addition, since the movement of the knitting needle on the receiving side is performed within a relatively short time (T1), the needle tends to be excessively lowered.

If the receiving side knitting needle descends excessively,
Not only does the knitting needle simply drop, but also the phase of the knitting needle bat and the presser that operates the knitting needle deviate, so that the knitting needle cannot be operated accurately. Such a problem is such that when the traveling speed of the carriage is increased or the knitting needle on the receiving side is pushed up, an excessive rise occurs.

The present invention has been proposed in view of the above problems, and an object of the present invention is to make it possible to prevent excessive elevation of a receiving knitting needle during transfer with a simple structure and reliably.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a knitting needle control device at the time of transfer in a flat knitting machine according to the present invention comprises a plurality of knitting needles arranged on a pair of front and rear needle beds. A knitting needle and / or a flexible jack connected to the knitting needle, and a knitting and / or transfer acting on the knitting needle bat on a carriage for operating the bat to adjust the knitting needle forward / backward. A lock, and a retractable or fixed transfer lasing cam that acts on a knitting needle bat and guides a transfer side knitting needle to a stitch transfer track between left and right needle lasing cams that form a single knitting and / or transfer lock. Arranged below the transfer lasing cam,
Forming a cavity through which the bat can pass, a transfer receiving cam having a raising cam surface that acts on the bat and guides the knitting needle to the stitch receiving track, and a transfer lasing cam facing the void. In a flat knitting machine having a carriage formed by forming a lower cam surface for guiding a bat of a knitting needle to a stitch receiving orbit on a lower surface, an excessive rise of a receiving side knitting needle pushed up by a raising cam surface of a transfer receiving cam is performed. The transfer lasing cam is provided with a surface that prevents excessive rise and a surface that prevents excessive lowering of the receiving knitting needle that has been pushed down by the lower cam surface of the transfer lasing cam. It is assumed that.

[0010] Further, the excessive lowering prevention surface is formed above the transfer receiving cam, on the cam base plate portion of the empty space where the trailing stitch receiving track is formed from the lowering cam surface of the transfer lasing cam. is there.

Another feature is that an excessive lowering prevention surface is formed on the upper surface portion of the raising cam surface which is located on the trailing side from the lowering cam surface of the needle lasing cam formed on the shoulder of the transfer receiving cam.

[0012]

A needle bed having a plurality of knitting needles arranged side by side is arranged in a pair at the front and rear with the teeth of the knitting needles abutting each other, and a loop is formed by a flat knitting machine having a loop expanding member formed on one side of each knitting needle. When transferring from the stopped transfer side knitting needle to the loop receiving knitting needle facing the transfer side knitting needle, first, the transfer side knitting needle whose loop is hooked by the needle lasing cam and the transfer lasing cam of the carriage rises.

Following the elevation of the transfer side knitting needle, the receiving side knitting needle is raised on the raised surface of the transfer receiving cam, and the hook portion of the receiving side knitting needle locks the loop of the transfer side knitting needle expanded by the loop expanding member. I do. At this time, the knitting needle on the receiving side is vigorously raised by the raising cam surface, and attempts to further rise from the regular position. However, the excessive rising prevention surface receives this and prevents excessive rising.

Thereafter, when the transfer side knitting needle is lowered while the hook is closed and / or closed, the loop hooked on the transfer side knitting needle is reliably transferred to the receiving side knitting needle.
When the receiving side knitting needle descends in a short time, it tries to descend below the normal position due to its inertia, but this is received by the excessive descending prevention surface, and excessive descending is prevented.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One preferred embodiment for carrying out the present invention will be described below with reference to the drawings. <Embodiment 1> A flat knitting machine used in this embodiment is configured such that a needle bed (not shown) provided with a large number of knitting needles operated by a carriage is moved forward and backward with the teeth of the knitting needles facing each other. In a flat knitting machine arranged in a C-shape, a carriage 1 and a knitting needle 2 which is moved forward and backward by the carriage 1 are configured as shown in FIGS.

That is, the knitting needle 2 is a so-called compound needle in which a slider 3 is slidably mounted, and as shown in FIG.
A jack 6 connected to the rear end of the knitting needle body 5, and a select jack 7, a select spring 8, and a selector 9, which are sequentially arranged above the rear of the jack 6, are formed. The bats 10, 11, 12, and 13 protruding from the upper surfaces of the members of the selector jack 7 and the selector 9 are advanced and retracted by the corresponding cam groups of the carriage 1, and the knitting needle 2 is advanced and retracted. ing.

A knitting needle 2 is provided on one side of the knitting needle body 5.
A widening member 14 for widening the loop hooked on is provided. The loop widening member 14 is formed by bending a thin metal plate into a square groove shape in plan view, and forming one end thereof. The hook 4 is fixed to one side surface of the knitting needle body 5, and the other end of the hook 4 is urged to abut the one side surface portion of the knitting needle body 5.

The side surface of the knitting needle body 5 near the hook 4 of the loop expanding member 14 is formed on an inclined surface 15, and is formed at the tip of the hook 4 of the knitting needle 2 on the side that interferes with the loop expanding member 14 in a side view. Also, an inclined surface 16 is formed (see FIG. 4). The two carriages 1 disposed on the front and rear needle beds, respectively, are connected by a connecting rod (not shown) so as to accompany them.

As shown in FIG. 5, each carriage 1.1 is provided with a transfer lock 17 acting on a bat of the knitting needle 2 at a substantially central portion thereof. A cam 18 is formed, and the needle lasing cams 18
A transfer lasing cam 19 which acts on the butt 11 of the knitting needle 2 and guides the knitting needle 2 to the stitch transfer track is provided therebetween.

A cavity 20 through which the bat 11 of the knitting needle 2 can pass is formed below the transfer lasing cam 19, and acts on the bat 11 of the knitting needle 2 so that the knitting needle acts on the stitch receiving track. Cam surface 2 to guide to
1 and the transfer receiving cam 22 and
A lower cam surface 23 for guiding the bat 11 of the knitting needle 2 to a stitch receiving track is formed on the lower surface of the transfer lasing cam 19 facing the transfer lasing cam 19.

A slider guide cam 24 is disposed above the needle lasing cam 18 formed on the side and below the transfer lasing cam 19.

The upper half of the transfer receiving cam 22 is formed in a substantially trapezoidal shape, and the side surfaces of both ends of the upper side are formed on a raising cam surface 21 for raising the knitting needle 2. As shown in FIG. 6, an excessive rise prevention surface 26 is formed on the cam base plate 25 of FIG. Above the transfer receiving cam 22, an excessive descent prevention surface 27 for preventing the knitting needle 2 pushed down by the lower cam surface 23 from excessively lowering is provided on the cam base plate 25 of the space 20 located on the trailing side from the transfer receiving cam 22. It is formed at a position different from the excessive rise prevention surface 26 in the traveling direction of the carriage 1.

Reference numeral 28 in the drawing denotes a presser disposed below the transfer receiving cam 22 acting on the butt 12 of the select jack 7.

The loop of the knitting needle 2 (transfer-side knitting needle 2a) of the rear needle bed shown in, for example, FIGS. 8 to 13 is transferred to the front knitting needle 2 (transfer-side knitting needle 2b) by the flat knitting machine configured as described above. The case will be described next. Assuming that the carriage 1 runs on the needle bed from right to left, FIG.
As shown in the figure, the bats 10, 11, and 12 of the slider 3, the jack 6, and the select jack 7 are
In the cam group from left to right as indicated by arrows A, B and C.

When the position of the rear knitting needle 2a with respect to the carriage 1 reaches the position, the bat 11 of the jack 6 is pushed up by the action of the needle lasing cam 18 and the rear knitting needle 2a is raised, leaving the bat 10 of the slider 3 remaining. As a result, the slider 3 is gradually retracted as a relative movement, and the hook 4 is opened.

At this point, the butt 12 of the select jack 7 is sunk by the presser 28 at the front knitting needle 2b, the bats 11 and 10 of the slider 6 become inoperative positions, and are subjected to the action of the needle lasing cam 18. Jump.

When the rear knitting needle 2a comes to the position of the carriage 1, the needle razing cam 18 pushes up the butt 11 of the jack 6 and the bat 10 of the slider 3 is left.
Hook 4 is fully opened with the slider 3 retracted (see FIG. 8). When the rear knitting needle 2a reaches the position of the carriage 1, the slider 3 and the jack 6 are raised by the transfer lasing cam 19.

At this time, as shown in FIG. 9, the front knitting needle 2b has the upper end of the hook 4 formed on both ends of the upper side of the transfer receiving cam 22 (left side). Overlap with the inclined surface 15 part of the part,
It rises to a position where it does not interfere with the lower edge portion of the loop expanding member 14. At this time, the front knitting needle 2b is
Is raised vigorously, and attempts to rise further upward from the normal position. The excessive rise prevention surface 26 receives this and prevents excessive rise.

When the front knitting needle 2b rises to the normal position, the loop 30 which is going to rise as the rear knitting needle 2a advances is received by the hook 4 of the knitting needle 2b. When the position of the rear knitting needle 2a with respect to the carriage 1 reaches the position, the loop 30 is expanded to a state in which the outer periphery of the loop expanding member 14 is wound, and is set at a regular position (see FIG. 10).

When the rear knitting needle 2a reaches the position of the carriage 1, the front knitting needle 2b rises, and as shown in FIG. 11, the side portion of the knitting needle body 5 of the rear knitting needle 2a and the expanding member provided thereon. 14, the hook 4 portion of the front knitting needle 2b is pierced.

When the rear knitting needle 2a reaches the position of the carriage 1, the rear knitting needle 2a descends, and the loop 30 is hooked on the hook 4 of the front knitting needle 2b. Thereafter, while the rear knitting needle 2a moves to the position from the carriage 1, the slider 3 closes the hook 4 as shown in FIG. 12, and then the rear knitting needle 2a is pushed down by the lower cam surface 23. When the hook 30 of the rear knitting needle 2a is lowered and the loop 30 is closed, the loop 30 hooked on the rear knitting needle 2a becomes the front knitting needle 2a as shown in FIG.
It moves to b.

At the subsequent position, the receiving side knitting needle descends in a short time as indicated by reference numeral T1 in FIG. 14, so that the receiving side knitting needle, the jack or the like has excessive force, and the receiving side knitting needle descends beyond the normal descending position. Try to
Since the excessive lowering prevention surface 27 receives this, the rear knitting needle 2a is always kept at the normal lowering position.

<Embodiment 2> The flat knitting machine used in the present embodiment is a flat knitting machine formed substantially in the same manner as in the above-described embodiment, and particularly the carriage 1 for moving the knitting needles of the needle bed forward and backward. The transfer lock 17 is configured as shown in FIGS. That is, the transfer lock 17 is a so-called “knit run lock” having a knitting function. The transfer lock 17 includes a mountain-shaped cam 29 having raised cam surfaces 21 formed at both ends on the upper side of a transfer trapping cam 22 formed in a substantially trapezoidal shape. An excessively rising prevention surface 26 for preventing the knitting needle 2 pushed up by the raising cam surface 21 from excessively rising is formed on a portion of the needle lasing cam 18 which is formed to protrude and faces the raising cam surface 21. Of the cam 29 on both sides of the cam 29 act as the excessive lowering prevention surface 27.

As described above, the transfer receiving cam 22
The raised cam surface 21 and the raised cam surface 21
Excessive descent prevention surface 2
7, the locus (Rc) of the receiving knitting needle 2b
v) As shown in FIG. 17, the delivery side knitting needle 2a once rises to a position where it interferes with the loop expanding member 14, and securely receives the loop 30, and then descends to lower the loop expanding member 1.
After avoiding the interference with No. 4, it goes up again to receive the loop 30.

Other configurations and operations are the same as those in the first embodiment.

In each of the above embodiments, the case where the carriage 1 travels from right to left has been described as an example. Conversely, when the carriage 1 travels from left to right, the same operation as described above is performed. And the loop 30 hooked on the rear knitting needle 2a
Can be moved to the front knitting needle 2b,
The loop hooked on the front knitting needle 2b is connected to the rear knitting needle 2a.
It goes without saying that it can be moved to.

Furthermore, in the above embodiment, the knitting needle is described as a compound needle having a slider, but the present invention can of course be applied to a latch needle.

[0038]

As described above, in the present invention, when the receiving knitting needle is raised on the raising cam surface or during transfer, the loop of the receiving knitting needle is transferred to the receiving knitting needle, and the receiving knitting needle is moved downward. The receiving side knitting needle attempts to move up and down excessively due to its inertia, etc. in order to descend in a short time on the surface. It can be reliably prevented.

This has the advantage that the phase of the bat of the knitting needle and the presser for operating the same can be prevented from being out of phase, and the accurate operation of the knitting needle can be maintained to produce a high-quality knitted fabric. .

Further, the structure for preventing the receiving side knitting needle from excessively lowering has a simple structure in which an excessive lowering prevention surface is formed in the carriage, and is implemented at low cost without increasing the size of the carriage. There is also the advantage of being able to do it.

[Brief description of the drawings]

FIG. 1 is a view showing a locus of a knitting needle during transfer in a conventional latch needle flat knitting machine.

FIG. 2 is a diagram showing a locus of a knitting needle during transfer in a conventional compound needle flat knitting machine.

FIG. 3 is a side view showing a configuration of a compound needle.

FIG. 4 is a partial cross-sectional view of a hook of a knitting needle during transfer.

FIG. 5 is a perspective view showing a cam group of the carriage according to the first embodiment.

FIG. 6 is a sectional view taken along line XX of FIG. 5;

FIG. 7 is an explanatory diagram of a trajectory when a knitting needle passes through a cam group of the carriage according to the first embodiment.

FIG. 8 is a side view showing the state of the transfer side knitting needle and the receiving side knitting needle during transfer.

FIG. 9 is a side view showing the state of the transfer side knitting needle and the receiving side knitting needle during transfer.

FIG. 10 is a side view showing the state of the transfer side knitting needle and the receiving side knitting needle during transfer.

FIG. 11 is a side view showing the state of the transfer side knitting needle and the receiving side knitting needle during transfer.

FIG. 12 is a side view showing a state of a transfer side knitting needle and a receiving side knitting needle during transfer.

FIG. 13 is a side view showing the state of the transfer side knitting needle and the receiving side knitting needle during transfer.

FIG. 14 is a diagram showing the trajectory of the knitting needle during transfer according to the first embodiment of the present invention.

FIG. 15 is a perspective view illustrating a group of cams of the carriage according to the second embodiment.

16 is a sectional view taken along line YY of FIG.

FIG. 17 is a diagram illustrating a locus of a knitting needle during transfer according to the present invention according to the second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Carriage 2 ... Knitting needle (2a ... rear knitting needle, 2b ... front knitting needle) 11 ... Butt 18 ... Needle lasing cam 19 ... Transfer lasing cam cam 21 ... Raised cam surface 22 ・ ・ ・ Transfer receiving cam 23 ・ ・ ・ Down cam surface 25 ・ ・ ・ Cam base plate 26 ・ ・ ・ Excessive rise prevention surface 27 ・ ・ ・ Excessive fall prevention surface

Claims (3)

(57) [Claims] 1. A plurality of knitting needles are provided on a pair of front and rear needle beds, and a bat is projected from an upper surface of the knitting needle or a flexible jack connected to the knitting needle, and the bat is operated. A knitting and / or transfer lock acting on the knitting needle bat is provided on a carriage for adjusting the knitting needle forward and backward, and a knitting needle bat is provided between the left and right needle lasing cams forming one knitting and / or transfer lock. A retractable or fixed transfer lasing cam that acts to guide the transfer-side knitting needle to the stitch transfer track is provided, and a space through which the bat can pass is formed below the transfer lasing cam.
A transfer receiving cam having an up cam surface that acts on the bat to guide the knitting needle to the stitch receiving track, and a down cam surface that guides the bat of the knitting needle to the stitch receiving track on the lower surface of the transfer lasing cam facing the space. In a flat knitting machine having a carriage configured by forming a transfer knitting needle, an excessive rise prevention surface that prevents an excessive rise of a receiving side knitting needle pushed up by a raising cam surface of a transfer receiving cam, and a lower cam surface of a transfer lasing cam. A knitting needle control device at the time of transfer in a flat knitting machine, characterized in that an excessive lowering prevention surface for preventing an excessive lowering of a pressed-down receiving side knitting needle is provided in a space below a transfer lasing cam. 2. An over-descent prevention surface is formed above a transfer receiving cam on a base plate portion of a cam in an empty space where a stitch receiving track on a trailing side is formed from a lower cam surface of a transfer lasing cam. The knitting needle control device at the time of transfer in the flat knitting machine according to claim 1. 3. An excessive lowering prevention surface is formed at an upper surface portion of a raising cam surface which is a trailing side from a lowering cam surface of a needle lasing cam formed on a shoulder portion of a transfer receiving cam. A knitting needle control device at the time of transfer in the flat knitting machine described in the above.