JPS6229539B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn feeding conversion device for a flat knitting machine.

The yarn path of a flat knitting machine is attached to a plurality of yarn path carriers that are slidably installed on a required number of yarn path rails constructed along the needle bed. The means for selecting and entraining during traveling is supported in a casing that reciprocates integrally with the carriage so as to be freely protrusive and retractable in the direction of engagement with the thread guide carrier.
It is constructed with a required number of carrier interlocking pins, but the yarn feed change in the yarn path entrainment device with this structure is carried out exclusively on the machine side at the turning point when the carriage reaches the left or right end of the needle bed. in the extended position by direct association with the carrier linkage pin or indirectly via a part of the displacement actuating mechanism of the carrier linkage pin. The carrier interlocking pin is retracted and the selectable carrier interlocking pin is controlled to the extended position.

Therefore, with such conventional devices, the disadvantage is that the impact sound is large when the carriage reaches the turning point of its stroke, and the yarn feeding conversion signal is not able to detect the impact sound when the carriage reaches the turning point of its stroke. Only this could be given, and therefore it was impossible to convert it in the middle of the process. Therefore, in order to start or end the conveyance of the thread guide carrier in the middle of one stroke, it is necessary to act on the carrier interlocking pin in the protruding position and move it to the retracted position. A thread guide stopper with a pushing surface was required.

In order to eliminate all of the above-mentioned drawbacks of the conventional device, the present invention provides a device for displacing the carrier interlocking pin in direct or related relation to the turning point of the carriage. By eliminating the mechanical means, even when the carriage reaches the turn-around point, there will be no impact noise for memorizing the pattern signal from the yarn feed converter, and the mechanism as described above on the yarn guide rail will not be generated. In order to be able to start the feeding of any yarn path carrier at any position in the carriage stroke or to interrupt it in the middle without providing a yarn path stopper, a yarn feed conversion signal is sent at the turning point of the carriage. By completely changing the concept of the conventional device, in which the same number of solenoids as the carrier interlocking pins are arranged in the casing, each carrier interlocking pin is
The solenoid is interlocked with the movable iron core of each solenoid within the casing, and a control signal for moving the carrier interlocking pin into and out of the solenoid is separately inputted to each solenoid.

To explain the embodiment with reference to the figures, in the figures,
Reference numeral 1 denotes a yarn guide rail which is bridged above the opening 3 along the longitudinal direction of the needle bed 2 of this flat knitting machine.
A required number of thread guide carriers 4 are slidably dovetail-fitted on each of the book thread guide rails 1. A gate arm 6 integrally connects the front and rear carriages 5, 5 by straddling this thread guide rail 1.
The casing 7 is fixed on top,
Inside the casing 7 is the following yarn feeding and converting device according to the present invention.

That is, the casing 7 of this embodiment includes a main body 8, a lid 10 secured to the main body 8 by screws 9, and a block 12 secured to the inside of the lid 10 by screws 11.
and a solenoid mounting plate 14 fixed to the block 12 with screws 13, and the block 12 has a required number of carrier interlocking pins 15 that are individually connected to the lid 10 in the vertical direction. A required number of guide grooves 16 having a U-shaped cross section for slidably supporting the carrier, and a support shaft 18 of the lever 17 provided for each carrier interlocking pin 15.
A groove 19 for holding the levers 17 between the levers 17 and the solenoid mounting plate 14, and a comb-shaped groove 20 for positioning each lever 17 respectively are formed. In the illustrated embodiment, a groove 21 communicating with 6 is formed.
Six carrier interlocking pins 15 are slidably supported in the guide grooves 16, and six levers 17 respectively connected thereto are located in the grooves 20 and 21 and pivotably pivoted. supported.

Each carrier interlocking pin 15 has a spring 22 interposed between a hole 15a formed at its upper end and a plate 12a fixed to the upper end of the block 12 and blocking the guide groove 16. By this spring 22, the recess 4 of the thread guide carrier 4 is always pushed in a direction that projects downward from the casing 7.
a, and the urging force is applied to the pin 2 protruding from the carrier interlocking pin 15.
3 is placed in a hole 24 drilled in the lid body 10 to be locked in a predetermined lowered position. The point 17a forms a recess 15b that can be fitted into the recess 15b, and each carrier interlocking pin 15 attaches the force point 17b side of the lever 17, which is engaged and connected to the recess 15b, to the mounting plate 14, respectively. 6 solenoids 2
5 through the lever 17 to each movable iron core 25a,
When the movable iron core 25a is urged in the protruding direction, the carrier interlocking pin 15 is connected in a direction in which it is raised against the pressure of the spring 22 (dotted line in FIG. 3).

Each solenoid 25 has a carriage 5.
When the needle reaches a pre-programmed position on the needle bed 2, signal power is input to it to move the movable iron core 2.
A cable (not shown) for controlling the downward appearance and retraction of the solenoid 25 is connected, and the solenoid 25 of the embodiment is a self-holding type solenoid.
When signal power is momentarily input to the solenoid 25, the movable iron core 25a is of a type that is self-maintained at least in the protruding position at least in the protruding position.

Since the yarn feed conversion device according to the present invention has the above-described configuration, it is completely different from the conventional device in that the carriage reaches the turning point at or near both ends of the yarn guide rail 1. When there is a clear lack of mechanical means for selectively displacing the carrier linkage pin 15 either in direct contact with the carrier linkage pin or in connection with a part of the carrier linkage pin displacement actuation mechanism. A thread guide stopper 26 is provided on the thread guide lever 1 and has an operating surface 26a that acts on the carrier interlocking pin in the protruding position to push it up to the retracted position.
Unlike conventional devices, this is not necessarily required.

The illustrated embodiment shows an example in which a thread guide stopper 26 is provided, but according to the present invention, such a thread guide stopper 26 is not necessarily required. It will become clearer more easily.

That is, since the yarn feed converting device of the present invention has the above-described configuration, even if the carriage 5 is in the middle of its stroke when the carriage 5 is running,
Regardless of the positional relationship, as long as signal power is input to the desired solenoid 25, only the desired solenoid 25 to which the signal power has been input will immediately operate, regardless of the positional relationship. Only the carrier interlocking pin 15 is controlled to be switched to the protruding position or the retracted position. Unless signal power is input to each solenoid 25 separately arranged for each interlocking pin 15,
The carrier interlocking pin 15, which is interlocked and connected to the movable iron core of the solenoid 25, remains in the extended or retracted position, and remains in that state even when the carriage 5 reaches the turning point. Needless to say, it will be kept and returned.

Therefore, according to the yarn feeding and converting device of the present invention, a special yarn path stopper is provided on the yarn path rail, and when the carriage runs, the interlocking of the yarn path carrier is started between the action positions of the yarn path stopper. Even if the carriage is running, any carrier interlocking pin reaches a certain position on the needle bed, that is, a position where it can enter into engagement with the thread guide carrier on the thread guide rail. At this point, if signal power is input to the solenoid disposed on the carrier interlocking pin,
That is, if a desired carrier interlocking pin is electrically controlled by a pre-programmed electrical signal so as to hold it in the protruding position only for a certain traveling section, each Each of the yarn guide carriers on the yarn guide rail can be interlocked to feed the yarn in an arbitrary predetermined section. In the above program, a solenoid is arranged for each carrier interlocking pin, so the control point of each solenoid is completely unrestricted in relation to the control point of other solenoids. , it goes without saying that they can be selected and changed at will.

However, as shown in the embodiment, the carrier interlocking pin is always urged by the spring in the direction of engagement with the thread guide carrier, and the space between the carrier interlocking pin and the movable iron core of the solenoid is as described above. If the carrier is connected via an interlocking mechanism that can transmit the force of the movable iron core only in the direction in which the carrier interlocking pin is retracted against the force, the carrier in a protruding position on the thread guide rail. It is no problem to provide a thread guide stop device with an operating surface capable of acting on the interlocking pin and pushing it up into the retracted position.

When the present invention is implemented by installing a thread guide stop device like a conventional device on the thread guide rail, the electric signal for controlling the appearance and retraction of the carrier interlocking pin to the solenoid is It may be applied by using an arbitrary section when the turning point is reached, and it is not necessarily necessary to apply it to the extreme limit when the carrier interlocking pin reaches a position where it can be thrust into engagement with the recess of the thread guide carrier. Since it is not necessary to selectively give a signal at the moment when the carriage is moving, it is necessary to synchronize it with the movement of the carriage. Needless to say, the advantage of being able to set the input time limit in the signal power input program more roughly than in the case where a carrier stopper is not provided is obtained, and even in such a case, the present invention still applies. According to the device, the protrusion and retraction control of the carrier interlocking pin is not performed directly or indirectly by direct contact with the cam or thrust rod at the end of the carriage, as in conventional devices, but by a solenoid. Since the operation is performed in conjunction with only the applied electrical signal and the displacement of the movable iron core of the solenoid activated by the signal, the advantage is that it is performed extremely quietly without any impact noise. have.

In any case, the yarn feed converting device of the present invention can convert any carrier interlocking pin to a carrier by controlling the signal power input to the same number of arbitrary solenoids as the number of carrier interlocking pins as described above. Since it is possible to freely control the appearance and retrieval of the carriage at any traveling position, it has the advantage that at least the generation of impact noise at the turning point of the carriage, which was associated with conventional equipment, can be completely eliminated. If necessary, you can respond to changes in the knitting width during forming knitting by simply controlling the input point of signal power to the solenoid, without having to install a moving device for the yarn guide stopper like in conventional equipment. By controlling the carrier interlocking pin to move in and out, the thread path carrier is interlocked by the width most suitable for the knitting width of the course, and the interlocking width of the thread path carrier changes in accordance with changes in the knitting width. It is possible to form and knit without causing problems such as changes in stitch size or dropped stitches that would otherwise occur.

In addition, unlike conventional devices, there is no need to install a control device to move a large number of thread guide stoppers.
Pattern knitting patterns (for example, inter-knit patterns) are obtained by gradually moving the positions where the thread paths alternate during the knitting process of the knitted fabric for each course, and changing the width of the knitting section shared by each thread path. This can be achieved only by electrical operation, in which the input point of the signal power to the solenoid is synchronized with the stroke of the carriage and changed according to a preprogrammed position. be.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a flat knitting machine equipped with a yarn feeding conversion device according to the present invention, FIG. 2 is a partially cutaway view of the casing in FIG.
FIG. 3 is an enlarged cross-sectional view taken along the - line in FIG. 2. 1... Thread guide rail, 4... Thread guide carrier, 5
...Carriage, 7...Casing, 15...Carrier interlocking pin, 25...Solenoid, 25a
...Movable iron core.

Claims (1)

[Scope of Claims] 1. A required number of carrier interlocking pins are provided in a casing that reciprocates integrally with the carriage so as to be freely retractable from the casing in a direction in which they engage with recesses in the thread guide carrier on the thread guide rail. At the same time, the same number of solenoids as the carrier interlocking pins are arranged in the casing, and each carrier interlocking pin is interlockingly connected to the movable iron core of each solenoid, and each of the carrier interlocking pins is connected to each of the solenoids. 1. A yarn feeding conversion device for a flat knitting machine, characterized in that the control signal for moving the pins in and out is inputted separately. 2. The yarn feeding conversion device in a flat knitting machine according to claim 1, wherein the solenoid is a self-holding solenoid. 3. A thread guide stop device is missing on the thread guide rail having an operating surface that acts on the carrier interlocking pin in the protruding position to push it up into the retracted position. Or the yarn feeding conversion device in a flat knitting machine according to any one of item 2. 4. A thread guide stop device is provided on the thread guide rail and has a working surface that acts on the carrier interlocking pin in the protruding position to push it up to the retracted position. A yarn feeding conversion device in a flat knitting machine according to any one of Item 2. 5. The carrier interlocking pins are each urged by a spring in a protruding direction that engages with the thread path carrier, and the distance between the carrier interlocking pins and the movable iron core of the solenoid is such that the fulcrum of the lever is positioned within the casing. The patent is pivotally supported at a proper location, and its point of force is connected to the movable iron core, and its point of action is connected to the carrier interlocking pin, respectively, by levers associated with each other in the direction of retracting the carrier interlocking pin. A yarn feeding conversion device in a flat knitting machine according to any one of claims 1 to 4. 6. The flat knitting machine lacks mechanical means at or near both ends of the yarn guide rail for directly or indirectly relating to and displacing the carrier interlocking pin. A yarn feeding conversion device in a flat knitting machine according to any one of items 1 to 5.