JPS5891843A - Apparatus for heat treatment of rope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rope heat treatment apparatus, and more specifically,
The present invention relates to a rope heat treatment apparatus characterized in that a pitch voice is used in the part where the rope is introduced into a sealed container in which the rope is heat treated and the part where the rope is led out from the sealed container to prevent steam leakage.

Conventionally, ropes have been heat-treated by so-called dielectric heating, in which a high-frequency electric field is applied after strands are twisted into a rope.

The purpose of heat treatment is to eliminate the repulsive force caused by the twisting inside the rope, prevent it from losing its shape and kinking, increase flexibility, and suppress changes over time.
The principle is that by heating the rope to a temperature slightly below the softening point of the material, the direction of the molecular arrangement is corrected in the direction of twist, and the twisted state is the natural state for the molecular arrangement of P-P. After making it so that it becomes , it is cooled and fixed in that state to eliminate the repulsive force. Note that "kink" refers to the strands that make up the rope being twisted by the repulsive force caused by twisting due to rapid expansion and contraction of the rope.

However, although dielectric heating is highly effective in generating heat for materials such as nylon, which has a relatively large loss coefficient, it generates almost no heat for materials such as polyolefin materials, which have a very small loss coefficient. Therefore, it was not effective. Therefore, for polyolefin materials,
Attempts have also been made to add water with a very large loss coefficient, heat the water by dielectric heating, and use the heated water to heat the rope, but the pressure between the electrodes to which the high-frequency electric field is applied must be raised to above atmospheric pressure. It was very difficult to raise it. This is because the part that guides the rope between the electrodes and the part that guides the rope outside between the electrodes after the heat treatment must be opened. Therefore, the water temperature is also 100
The temperature of 100°C is far below the softening point of polyolefin materials, such as polypropylene, and therefore the heat treatment could hardly be expected to have any effect. Furthermore, uniform heat treatment could not be expected due to uneven adhesion of water.

The present invention has been made in view of the above drawbacks of conventional heat treatment devices using dielectric heating, and provides a rope heat treatment device that can perform uniform and effective heat treatment by using steam. It is.

That is, the present invention includes a sealed container (8) containing steam (9),
The sealed container (8) is rotatably attached to the sealed container (8) by the rotary joint αυ (introduction pitch voice Φυ for introducing the rope (6) into the illusion), and the sealed container (8) is rotatably attached to the sealed container (8) by the rotary joint 0υ. The present invention relates to a heat treatment apparatus for a rope (6), which is comprised of a lead-out pitch voice, which leads out the rope (6) from within a sealed container (8) attached to the rope.

The present invention will be described below with reference to the drawings.

As mentioned above, the heat treatment of the rope (6) is performed by heating the strand (2).
) is twisted and formed into a rope (6), so the heat treatment device according to the present invention may be incorporated in the final stage of the manufacturing process of the rope (6). After manufacturing the rope (6), the rope (6) may be set again in the heat treatment apparatus according to the present invention.

When incorporating a heat treatment device in the final stage of the rope (6) manufacturing process, as shown in Figures 1 and 2, the front
It is preferable to incorporate it between the capstan roll (7) and the rear capstan roll (7). If this happens, use the rope (
The net making and heat treatment in 6) are carried out continuously as follows.

That is, as shown in FIGS. 1, 2, and 3, the wires are set in each of the three strand bobbins (3) of the net making machine.
From each of the three strand coils (1) around which the strands (2) are wound, the strands (2) pass through the cylinder (
After being guided through the outer periphery of the pitch voice (5)
), and as the cylinder rotates, each strand (2) is twisted into a single rope (6) at the pitch voice (5), and the front capstan roll (7
). At this time, due to the rotation of the cylinder (4), twisting also occurs in the opposite direction, that is, in the direction of the strand coil (1), but this is because the strand (2) is twisted in the opposite direction to the twisting of the rope (6) in advance. This can be offset by keeping the

The rope (6) wound around the front capstan roll (7) is then passed from the introduction pitch voice 6υ to the sealed container (
8) and undergoes heat treatment with steam (9).

The pitch voice (5) is a member having a cross-sectional shape as shown in FIG. 4, and the uneven shape of the internal hole corresponds to and matches the uneven shape of the rope (6) to be guided. Usually, the pitch voice (5) means that the strand (2) is connected to the rope (6).
) is used as shown in FIG. 1 or FIG. 2, but in the heat treatment apparatus according to the present invention,
Connect the pitch voice (5) to the rope (6) into the sealed container (8).
) and the lead-out part of the rope (6) from inside the sealed container (8), it prevents leakage of steam (9) from the sealed container (8) and improves the sealing effect. .

That is, the outline of the guided rope (6) and the pitch voice (5
) match the inner shape of the hole, so if the pitch voice (5) is used at the introduction and outlet parts to the sealed container (8), the rope (6) and pitch voice (5) will come into close contact, p
- There is almost no air gap between the pipe (6) and the pitch voice (5), and therefore leakage of steam (9) from the inlet and outlet parts is almost completely prevented. be.

However, in this case, in order to advance the rope (6),
It is necessary to rotate the pitch voice (5) used in the introduction part and the lead-out part about the center of the rope (6). Anyway, as it is, it's pitch voice (5)
This is because the unevenness of the inner wall of the hole is interlocked with the unevenness of the rope (6), which prevents the rope (6) from advancing. Another way to advance the rope (6) is to keep the pitch voice (5) fixed and move the rope (6) forward.
There is also a way to do this by rotating the
This method not only has the negative effect of easily disturbing the twist of the rope (6), but is also very difficult in practice. This is because, as described later, the rope (6) is placed in a sealed container (8).
), it may be necessary to reciprocate several times using the guide roll 00, and it is extremely difficult to give rotation to the rope (6).

Rotation of the pitch voice (5) is made possible by attaching the pitch voice (5) to the sealed container (8) via a p-tally joint 0υ, as shown in FIGS. 5 and 6.

That is, in the case of FIG. 5, the pitch voice (5) is fitted into the rotating part (2) of the rotary joint, and the rotating part a of the rotary joint is connected to the rotating part a through the gasket α and the oil seal αG. It is held by the fixed part (2) of the rotary joint so that it can rotate smoothly,
The fixed part α field of the rotary joint is in a sealed container (8
) is attached to. Therefore, it is possible to rotate the pitch voice (5) as the rope (6) advances.

Note that a gear (IQ) is carved on the outer periphery of the rotating part (2) of the rotary joint, and the gear OQ is connected to the shaft 0 that transmits the rotation of the torque motor (to) shown in Figure 6.
Since it is meshed with the rotating gear αη, by rotating the torque motor (to), the rotating part (2) of the rotary joint and the rotating part (2) of the rotary joint can be rotated.
) can be rotated. Here, the reason for using the torque motor is to synchronize the rotational speed of the pitch voice (5) with the advancing speed of the rope (6).
) to prevent excessive force from being applied. This is because the advancement of the rope (6) and the rotation of the pitch voice (5) are performed by separate motors, so the rotation of the pitch voice (5) is synchronized with the advancement speed of the rope (6). It is necessary to prevent excessive force from being applied, and a torque motor is suitable for this purpose. That is, the torque motor (g) is a motor whose rotational speed can be controlled by the advancing speed of the rope (6).

In this way, the introduction pitch voice 6υ is sealed in a sealed container (
8) The rope (6) guided into the sealed container (8) is heated with steam (9) inside the sealed container (8). The time required for the treatment is the time required for sufficient heat to be transmitted to the center of the rope (6), and this is determined by the thickness of the rope (6) and the temperature of the steam (9). pressure), saturated steam at Haat °C.
When heating the cIII rope (6), at least 60
It takes about seconds. To do this, the speed of the rope (6) should be slowed down, and the rope (6) should be moved into the sealed container (8).
), it is preferable to make the rope (6) exposed to the steam (9) for a long time by reciprocating it several times using the guide roll a1, thereby securing the above-mentioned necessary time.

In the case of saturated steam, the temperature of the steam (9) is uniquely determined by determining the pressure. For example, if the pressure is 1 kq/cd, it will be 11α61°C, which is the temperature of the rope (6).
If the material is polypropylene, the temperature is suitable for heat treatment. Further, as the steam (9), heated steam that can obtain a high temperature at a relatively low pressure may be used.

The steam (9) is supplied through an air supply pipe (E) connected to the sealed container (8), and the steam (9) in the sealed container (8) is supplied with air.
Since the pressure and temperature of ) are kept substantially constant, uniform and even heat treatment is possible.

The rope (6) that has been heat-treated by the steam (9) is then guided out of the heat-treating device from the lead-out pitch voice,
After being wound around the rear capstan roll (7), the moisture that adheres to the rope (6) is evaporated by the residual heat of the rope (6) itself.
Guided out of the net making machine.

The derived pitch voice ring also rotates as the rope (6) advances, and the principle and method thereof are the same as in the case of the introduction pitch voice 6υ.

Note that the rotational speed of the rear capstan roll (7) is preferably slightly slower than the rotational speed of the front capstan roll (7) if the rope (6) shrinks due to heat treatment.

As described above, a rope (6) that has been subjected to heat treatment by the heat treatment apparatus according to the present invention is manufactured.

The advantage of the heat treatment apparatus according to the present invention is that it utilizes heating by steam (9), and that the rope (
Pitch voice (5) is introduced in the part where 6) is introduced and derived.
Since the steam (9) is almost completely sealed, uniform and even heating can be achieved.

In other words, unlike dielectric heating, steam heating can heat materials with a small loss coefficient, and since steam (9) can be set to any desired temperature by changing the pressure, high temperatures can be easily obtained, and therefore materials with high softening points can be heated. Furthermore, by using the pitch voice (5), the steam (9) is almost completely sealed, making it possible to heat evenly and evenly.

[Brief explanation of drawings]

Figure 1 is a plan view of a net making machine incorporating a heat treatment device, Figure 2
The figure is a side view of a net making machine incorporating a heat treatment device, Figure 3 is a schematic side view of the cylinder and strand bobbin, Figure 4 is a sectional view of the pitch voice, and Figure 5 is a pitch voice connected to the rotary joint. The assembled sectional view and FIG. 6 are plan views of the heat treatment apparatus. Explanation of symbols in the diagram

Claims (1)

[Claims] A sealed container containing steam, an introduction pitch voice for introducing a rope into the sealed container rotatably attached to the container by a rotary joint, and an introduction pitch voice for introducing a rope into the sealed container rotatably attached to the container by a rotary joint. A rope heat treatment device consisting of a lead-out pitch voice for leading out the rope.