JPS6211989Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of the thread guide device of an automatic flat knitting machine.
In particular, by using a magnetic force-based entrainment drive system for the thread guide mechanism in the switching type thread guide device, it is possible to prevent noise when switching the thread guide, as well as prevent damage to the holder and smooth initial sliding of the holder. This article relates to a thread guiding device that has made this possible.

Generally, in automatic flat knitting machines, the
A so-called switching type thread guiding device of the type shown in the figure is often used. That is, a thread guide rod 2 is attached to a plurality of thread guide rails 1, 1, . . . having a certain length arranged in parallel.
The holders 3, 3... with the proximal ends of the The holder 3 that guides the colored thread is selectively switched, and the selected holder 3 is carried by a carriage 4 for a certain distance on the thread guide rail 1.

As shown in FIGS. 2 and 3, the selection of the holder 3 is carried out by selectively moving the carrying rods 5a, 5a, . This is done by lowering the engaging rod 5a to fit into the engaging recess 3a formed on the upper surface side of the corresponding holder 3. In addition, the movement width of the holder 3 is restricted by the fourth
As shown in the figure, an engaging body 5c is inserted through a spring 5b into the tip of the driving rod 5a by the tip inclined surface 6a of the stopper 6 fixed to the thread guide rail 1.
This is done by lifting the engaging member 5c upward and releasing the engagement between the engaging member 5c and the recess side wall 3a', and the entraining rod 5a
As long as it does not move upward, the reciprocating movement of the carriage 4 causes the same holder 3 to reciprocate between the two stoppers 6, 6.

On the other hand, the yarn path switching device 5 is an electrically controlled type that controls driving solenoids, etc. that move the driving rods 5a, 5a, etc. up and down according to a preset program corresponding to the knitting pattern. There are two types: one is mechanically operated, and the other is a mechanically operated type that uses a cam mechanism to control the operation of each driving rod 5a, 5a, etc.
Generally, the former electrically operated yarn path switching device 5 is often used.

In addition, in FIGS. 1 to 4, 2a is a conductor hole, 3b is an adjustment piece, 3c is an adjustment spring, and 4
a is a carriage arm, and 7 is a stopper locking hole.

However, in the case of the conventional thread guide device, as shown in FIG. Union 5c and recess side wall 3
Since the structure is such that the holder 3 is moved along with the contact of a', even if the holder 3 is made of synthetic resin, when the engaging body 5c moves in the direction of the arrow and comes into contact with the recess side wall 3a'. The negative impact of this noise on workers in automatic high-speed flat knitting machines for five to six colors cannot be ignored.

In addition, there is a risk of damage such as abrasion and distortion to the side wall 3a' of the recess due to the impact when the engaging body 5c comes in contact with the engaging body 5c, and since the sliding movement of the holder 3 starts with an impact, various damages may be caused to the thread, etc. The problem is that it can have a negative impact.

The present invention aims to solve the above-mentioned problems in conventional thread guide devices for automatic flat knitting machines of this type, and instead of using the driving rod 5a, the selection of the holder 3 is switched by magnetic force. A flat knitting machine for use in a flat knitting machine, which has a configuration in which the holder 3 is moved by the carriage 4 very smoothly and without impact, with no noise or damage to the holder due to impact, by having a configuration that performs a driving drive. The purpose is to provide a thread guide device.

The present invention fixes an adsorption piece 9 or a permanent magnet 13 made of a magnetic material to the upper surface of the holder 3, and
The thread path switching device 5 of the carriage 4 is equipped with electromagnets 10, 10, .
The basic structure is to selectively switch the carrying of each holder 3, 3... by the carriage 4 by controlling the excitation of 0, 10... according to a predetermined fixed program. By doing so, it is possible to reduce noise, prevent damage to the holder 3, and facilitate initial sliding of the holder 3.

Hereinafter, the details will be explained based on an embodiment of the present invention shown in FIGS. 5 to 7. Incidentally, parts common to those in FIGS. 1 to 4 are given the same reference numbers.

In the diagram, 1 is the thread guide rail, 2 is the thread guide rod, and 3 is the thread guide rail.
4 is a holder, 4 is a carriage, and 5 is a thread path switching device equipped on the carriage.

The holder 3 is composed of a holder main body 8 made of synthetic resin and an adsorption piece 9 made of a magnetic material fixed to the upper surface thereof, and includes a sliding pressure adjustment piece 3b, a pressure adjustment spring 3c, and a pressure adjustment bolt 3e. etc. are each equipped.

On the other hand, the thread path switching device 5 equipped on the carriage 4
, a plurality of electromagnets 10, 10 are provided at positions vertically facing the adsorption pieces 9 of each holder 3, 3...
... are on sale, and an excitation current IC is supplied from a control device 12 to the excitation coil 11 of each electromagnet 10, 10, according to a fixed program set in advance in accordance with the knitting pattern. That is, by energizing a certain electromagnet 10, the attraction piece 9 of a certain holder 3 corresponding to the electromagnet 10 is attracted to it, and as the carriage 4 moves, that holder 3 is moved along with it. It turns out. Note that the movement width of the holder is regulated by controlling the energization time of the excitation current ic, and in this case, there is no contact between the stopper 6 and the holder 3, which is more convenient.

In the embodiment described above, the yarn path switching device 5 is equipped with an electromagnet 10, and the electromagnet 10 is energized to attract and carry the attracting piece 9 of the holder 3, but as shown in FIG. As shown in FIG.
Holder 3 to be carried in a position where they face each other.
A pulse excitation current may be applied to the electromagnet 10 facing each of the other holders 3, 3, . . . except for the holders 3, 3, . With this configuration, the excitation current only needs to be a demagnetizing pulse current, and power consumption can be significantly reduced.

As described above, the present invention has a structure in which the holder 3 is switched and carried by magnetic force via the electromagnet 10 of the thread path switching device 5, so compared to the conventional thread path device using the carrying rod 5a, the thread path switching device 5 is In addition to eliminating noise during operation, mechanical damage to the holder is also reduced, and the service life of the holder 3 is greatly extended.

Furthermore, since the switching is carried out by magnetic attraction, the carrying movement of the holder 3 is started without impact, which makes it possible to carry out extremely smooth carrying movement of the holder, and also to control the excitation of the electromagnet 10. Therefore, the movement width of the holder can be easily restricted without using the stopper 6 or the like.

As mentioned above, the present invention has excellent practical utility.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the main parts of a conventional suspension type thread guide device, and Fig. 2 is an enlarged front view of the holder section.
FIG. 3 is a sectional view taken along line A in FIG. 2, and FIG. 4 is an explanatory diagram of the operation of the stopper. FIG. 5 is a side view showing the main parts of the thread guide device according to the present invention, and FIG. 6 is an explanatory view of its operation. FIG. 7 is an explanatory diagram of the operation of another embodiment of the present invention. 1... Thread guide rail, 2... Thread guide rod, 3... Holder, 4... Carriage, 5... Thread guide switching device,
6...stopper, 9...adsorption piece, 10...electromagnet, 11...excitation coil, 12...control device, 1
3...Permanent magnet.

Claims (1)

[Scope of utility model registration request] A thread guide rod 2 is attached to a plurality of thread guide rails 1, 1... arranged in parallel.
The holders 3, 3... to which the holders 3, 3, etc. are fixed are slidably mounted, and the thread path switching device 5 of the carriage 4, which moves along the thread path rails 1, 1..., switches the carriage of each holder 3, 3... In the switching type thread guide device of an automatic flat knitting machine as described above, an attraction piece 9 made of a magnetic material or a permanent magnet 1 is attached to the upper surface of the holder 3.
At the same time, the thread path switching device 5 of the carriage 4 is equipped with electromagnets 10, 10, which face the adhesion pieces 9 or the permanent magnets 13 of the respective holders 3, 3..., and the electromagnets 10, 10... are excited. The transverse apparatus is characterized in that it is configured to switch the carrying of each holder 3, 3... and to regulate the movement width of each holder 3, 3... by controlling it according to a certain predetermined program. Thread guide device for knitting machines.