JPH0139738Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a thread that automatically detects when the pattern threads on the pattern thread winding rod of a warp knitting machine are almost exhausted before the pattern threads fall. This invention relates to a device for attaching a terminal in a sensing device for preventing falling.

[Conventional technology]

The conventional terminal mounting structure of a sensing device for preventing thread drop is as shown in FIG. 6, in which a plate spring is attached to a horizontal rod 5, and a terminal 9 in the form of small particles is fixed to the tip of the plate spring. (Japanese Patent Application No. 57-191328) [Problem to be solved by the invention] The thread drop prevention sensing device detects the knitting machine when the amount of pattern thread winding decreases and the terminal comes into contact with the metal on the surface of the pattern thread winding pin. However, with the conventional one in which the terminal 9 is attached to the tip of the leaf spring, the timing at which the knitting machine stops differs depending on each leaf spring, and even if the leaf spring is the same, it is difficult to attach the leaf spring to the horizontal rod 5. Because the contact point of the terminal changes depending on the angle at which it is fixed,
It was impossible to control the timing of stopping the knitting machine.

When fixing a leaf spring to the horizontal rod 5, if the leaf spring is set close to horizontal and the pressure on the handle thread winding rod is weak, the terminal will not come into contact with the handle thread surface since the amount of winding of the handle thread is large at first. However, when the number of pattern threads decreases, even though there are pattern threads remaining,
When the leaf spring is completely sagged, the terminal may separate from the metal surface of the handle spool pin, and the thread may fall off. The distaff does not rotate smoothly, which affects the texture of the handle.

In addition, with conventional terminals, the part that contacts the pattern spool is a point contact, so if the metal part of the pattern spool is even slightly disturbed, the terminal will come into contact and the knitting machine will stop, resulting in a premature stop. The disadvantage was that there was a lot of yarn loss during the process.

Furthermore, since the terminal is fixed to a leaf spring and is immovable,
The following inconveniences occurred.

That is, before starting to wind the pattern thread on the pattern thread winding rod, the twill is normally adjusted so that there is a gap of several millimeters between the twills of the pattern threads, in order to prevent the pattern threads from overlapping each other. However, if the terminal is located in this gap, there will be a lot of pattern yarn left on the pattern thread winding rod, and the terminal will touch the metal surface of this gap even though it is much earlier than the timing when the knitting machine should be stopped. The knitting machine stops when it comes into contact with the knitting machine and turns on electricity.

In order to prevent this, the conventional sensing device moved the position of the hanging rod 1, but in this case, all the terminals attached to each leaf spring move the same distance and in the same direction, so the number of terminals attached to each leaf spring is usually reduced per knitting machine. The number of warped pattern threads wound around each pattern thread winding pin may vary depending on the pattern being knitted, and the number of warped pattern threads wound around each pattern thread winding pin may not be the same, but may vary, especially for thin products. In many cases, it is difficult to move the hanging rod.

Therefore, it was necessary to warp the pattern threads by making sure that each leaf spring terminal came into contact with the pattern threads at the stage of warping the pattern threads.

However, it is necessary to warp so that all the terminals are not located in the gaps between the twills, and all the terminals are in contact with the pattern yarn wound on the pattern thread winding pin under any warping conditions. was almost impossible.

However, in view of the above points, the present invention solves the inconvenience caused by the use of leaf springs, and by controlling the timing of stopping the knitting machine without using leaf springs,
This prevents residual thread loss and thread drop, increases the contact of the terminal with the handle thread winding rod, eliminates residual thread loss, and also allows the terminal to be moved.

[Means for solving problems]

In order to solve the above problems, the present invention has several horizontal rods 5 that are movable up and down on the hanging rod 1 suspended from the upper connecting pipe 17 of the pattern thread winding stand 15 installed on the side of the warp knitting machine. is installed, and the horizontal rod 5
In the sensing device that is attached to the terminal 9 and detects thread drop of the handle spool 16, an arm rod 8 is attached to the horizontal rod 5, and the handle spool 1 is attached to the arm rod 8.
The terminal 9 is movably suspended so that the contact portion with the terminal 6 is in line or surface contact.

[Effect]

Next, the operation of the present invention will be explained based on the drawings.
The terminals 9 are connected to the handle spools 16 according to the intervals between the handle spools 16 arranged on the handle spool hanging stand 15.
Slide the sliders 6 through which the horizontal rod 5 is inserted along the guide groove 2 so as to contact the handle thread 18 wound on the handle thread 1
After fixing the suspension ring 4 on the top of the hanging rod 1.
The connecting pipe 17 of the stand 15 for hanging the handle spool
If the terminal 9 is inserted through and suspended from the horizontal rod 5, the terminal 9 will be suspended from the arm rod 8 attached to the end of the horizontal rod 5.
is in contact with the pattern thread 18.

Then, when the pattern thread 18 is almost gone, the terminal 9
contacts the pattern thread winding rod 16, energizes it, and senses before the pattern thread 18 runs out.

The timing of stopping the knitting machine of the present invention is adjusted by utilizing the fact that as the amount of winding of the pattern thread 18 decreases, the area of the metal surface increases.

That is, the timing at which the terminal 9 comes into contact with the metal surface of the pattern spool 16 to stop the knitting machine is made possible by changing the length of the contact portion of the terminal 9 with the pattern spool 16.

Therefore, when the pattern thread 18 has a wide traverse width, a long terminal of the rectangular plate-shaped terminal 9 is used in the embodiment, and conversely, when the pattern thread 18 has a narrow traverse width,
Just use a terminal with a short width.

As a result, the pattern thread 1 wound on the pattern thread winding rod 16
By suspending terminals 9 that match the traverse width of 8 from the arm rod 8, each pattern thread 18 is used until the remaining amount becomes small, making it possible to reduce residual thread loss.

By providing the insulating parts 14 on both sides of the terminal 9, it is possible to prevent the knitting machine from stopping even if the terminal 9 comes into point contact with the metal surface of the pattern thread winding rod 16 at a tilted corner.

Furthermore, since the terminal 9 of the present invention can be attached back and forth through the sliding groove 10 or attachment hole 11 of the arm rod 8, the position of the terminal 9 can be changed according to the way the pattern thread 18 is wound, as shown in FIG. can be easily selected.

Furthermore, since the terminal 9 of the present invention is simply suspended from the arm rod 8, the terminal 9 can move freely and not only come into contact with the top of the handle spool 16, but also come into contact with the side surface. It also has a large contact width.

〔Example〕

Below, an embodiment of the present invention will be described based on the drawings. Reference numeral 1 is a hanging rod having a guide groove 2 in the vertical direction, and a hanging ring part 4 with an insulating rubber 3 abutted on the inside is formed at the top. At the same time, several sliders 6 having horizontal rods 5 inserted therein are slidably secured to the guide groove 2 by locking screws 7.

Further, arm rods 8 are attached to both ends of the horizontal rod 5, and terminals 9 are attached to the arm rods 8 in long grooves 10 or in the longitudinal direction as shown in FIG. 3 or 4 so that the terminals 9 can be movably suspended. A large number of holes 11 are bored.

Reference numeral 12 denotes a slider which hangs the terminal 9 and is attached to the arm rod 8. The terminal 9 is suspended from the slider 12 by a wire 13 so as to float thereon.

The terminal 9 may have any shape, such as a plate or a sphere, as long as the contact portion with the handle spool 16 is a wire or surface contact.

The terminal 9 shown in FIG. 5 is provided with insulating portions 14 on both sides, so that even if the terminal 9 is tilted and the corner portion makes point contact with the handle pin 16, the knitting machine will not stop.

15 is a stand for hanging the handle spool, 16 is the handle spool, 17 is a pipe connecting the left and right stands for hanging the handle spool, 18 is the handle thread wound around the handle spool 16, FIG. In the figure, 19 is a rod with one end fixed to the hanging rod 1, and 20 is a stand 1 for hanging the handle spool.
In addition, in the sensing device of the present invention, the handle spool 16, the stand 15 for hanging the handle spool, etc. are all made of conductive material, and the positive side of the electrode, for example, is used for hanging the handle spool. If the negative side of the stand 15 is connected to the hanging rod 1, the insulating rubber 3 is attached to the inside of the hanging ring 4 at the top of the device of the present invention.
The current is cut off unless the terminal 9 comes into contact with the handle spool 16.

Therefore, before the pattern thread 18 runs out, the terminal 9 connects to the pattern thread winding rod 1.
When it comes into contact with 6, it becomes energized, activates a relay circuit, and stops the knitting machine.

[Effect of idea]

According to the present invention, compared to the conventional case, the terminal 9 is suspended from the arm rod 8 in a floating manner and moves back and forth, so that the terminal 9 can freely move according to the surface condition of the handle spool 16. It is possible to eliminate residual yarn loss due to line or surface contact, and it is also possible to adjust the timing at which the knitting machine stops.

Further, since a leaf spring is not used, the pressure of the leaf spring against the surface of the pattern yarn 18 is eliminated, and the rotation of the pattern thread winding rod 16 becomes smooth during operation of the knitting machine.

Furthermore, since the position of each terminal 9 can be moved back and forth without changing the position of the hanging rod 1, there is an effect that it can correspond to the winding position of the pattern thread 18.

[Brief explanation of the drawing]

Fig. 1 is a front view of a sensing device for preventing thread drop equipped with the device of the present invention, Fig. 2 is a side view of the same, Figs. FIG. 6 is a side view showing the embodiment, and FIG. 6 is a partial side view of a conventional device. 1 is a hanging rod, 5 is a horizontal rod, 8 is an arm rod, 9 is a terminal, 15 is a handle spool stand, 16 is a handle spool, and 17 is a connecting pipe.

Claims (1)

[Scope of utility model registration request] Several horizontal rods 5 are attached to the hanging rod 1 suspended from the upper connecting pipe 17 of the pattern thread winding stand 15 installed on the side of the warp knitting machine so as to be movable up and down. In the sensing device that detects thread drop of the handle spool 16 using the terminal 9, an arm rod 8 is attached to the horizontal rod 5, and the contact portion of the arm rod 8 with the handle spool 16 is in line or surface contact. A terminal attachment device for a sensing device for preventing thread drop in a warp knitting machine, characterized in that a terminal 9 is movably suspended.