JPH09290203A - Coating applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to uniformly and stably apply a coating material to a long-sized object which is introduced from a mouthpiece for an inlet and passes the inside of a easing by supplying the coating material into this easing, diffusing the coating material by rotating rotary vanes, the mouthpiece for the inlet and a mouthpiece for an outlet and applying the coating material on the long-sized object. SOLUTION: For example, a release agent is supplied at a constant rate into the casing 2 from a supplying port 13. A driving motor 6 is then driven to rotate the spiral rotary vanes 3 in the casing 2, the mouthpiece 4 for the inlet and the mouthpiece 5 for the outlet, by which the release agent is diffused and is applied to a cable K which is introduced from the mouthpiece 4 for the inlet and passes the inside of the casing 2. The cable K coated with the release agent is transferred through the mouthpiece 5 for the outlet to a device to be used in the ensuing stage. The excess release agent is extruded by the rotary vanes 3 and is discharged outside the casing 2. The excess release agent is gathered via a hopper 12 to a bottom 12a and is circulated to a fixed delivery pump so as to be reutilized for coating application.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a coating apparatus,
In particular, the present invention relates to a coating device for uniformly coating a powder release agent such as talc on the surface of a long object such as an ABS (Antilock Brake System) sensor cable.

[0002]

2. Description of the Related Art Generally, in the process of manufacturing an ABS sensor cable used in an automobile brake system, in order to stabilize the adhesion between the twisted core and the polyurethane sheath, and between the primary sheath and the secondary sheath, Apply a powder release agent such as talc on the surface.

The conventional release agent coating device includes a scraping method and an electrostatic method. The scraping type coating device supplies the release agent to the scraping chamber using a metering pump or the like, and the scraping agent is diffused by two scraping impellers provided in the scraping chamber. The release agent is applied to the surface of the cable as the cable passes through the diffusion chamber.

[0004] The electrostatic coating device utilizes an ionic current between high-voltage static electrodes to adsorb a release agent on the surface of the cable.

[0005]

In the scraping-type coating apparatus, in order to uniformly spread the release agent, the scraping impeller must be made large, and accordingly,
The raising room becomes larger. When the volume of the scraping chamber becomes large, the level of the release agent at the bottom of the impeller becomes unstable and the diffusion amount becomes unstable.As a result, the coating amount becomes uneven and the desired coating amount is adjusted. It was very difficult to do.

In the electrostatic type coating device, the amount of coating is insufficient, so that the release agent cannot be stably coated.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a coating apparatus that can coat a long object uniformly and stably.

[0008]

In order to solve the above-mentioned problems, the coating apparatus of the present invention comprises a main body having an inlet and an outlet through which a long object passes, and the main body provided inside the main body. An object passes, a hollow casing having a supply port and a discharge port for the coating material, a spiral rotary blade provided inside the casing, and the elongated product being arranged so as to be the axis of rotation, The present invention is characterized by comprising a mouthpiece rotatably supported at an inlet and an outlet of the main body, and drive means for rotationally driving the rotary blade and the mouthpiece.

According to the present invention, the coating material is supplied from the supply port into the casing, and the drive means rotates the spiral rotary blade, the inlet die and the outlet die in the casing. As a result, the coating material supplied into the casing is diffused, and is applied to the long material introduced from the inlet die and passing through the casing. Since the amount of diffusion by the spiral rotary blade can be kept constant, it is possible to apply the applied material evenly to the surface of a long object.Cables coated with a release agent pass through the outlet mouthpiece and The excess release agent supplied to the apparatus used in the process is extruded by the spiral rotary blade and is discharged to the outside of the casing from the discharge port.

Further, since rotatable mouthpieces are provided at the inlet and outlet of the main body, a swirl flow is generated during rotation, which prevents the coated material from flowing out, and further enhances the sealing property. be able to.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side sectional view showing a coating apparatus of the present invention, and FIG. 2 is a side sectional view showing an internal structure of a casing. The coating apparatus of the present invention, for example,
ABS (Antilo) used in automobile braking systems
ck Brake System) Used in the sheath process of sensor cables to apply powder release agents such as talc, Teflon powder, and limonite to the surface of the cable.

As shown in FIG. 1, the coating apparatus A of the present invention.
Is a body 1 provided with an inlet 1a and an outlet 1b through which the cable K passes, and a casing 2 provided inside the body 1.
A spiral rotary blade 3 provided inside the casing 2, an inlet base 4 provided at the inlet 1a of the main body 1, and an outlet base 5 provided at the outlet 1b of the main body 1.
And a drive motor 6 (driving means) for rotating the rotary blade 3, the inlet mouthpiece 4, and the outlet mouthpiece 5.

The main body 1 is assembled from a steel plate, and a housing portion 10 for housing the casing 2 and the like, and a housing portion 1
The pockets 11 and 11 provided at both ends of 0, the bottom part 1 and the release agent discharged from the storage part 10 and the pocket part 1
2a and a hopper portion 12 for collecting.

The casing 2 is formed of an elongated cylindrical body made of aluminum, and is horizontally arranged so that the cable K can pass therethrough. A supply port 13 for supplying a release agent to the inside of the casing 2 is provided at an upper portion of the casing 2, and both ends of the supply port 13 are provided for discharging the release agent in the casing 2 to the hopper portion 12 of the main body 1. A discharge port 14 is provided.

The rotary blade 3 is made of a hard resin, and the cable K is arranged so as to become the axis of rotation. A hollow pulley 15 for transmitting a rotational force to the rotary blade 3 is attached to one end (right side in FIG. 1) of the rotary blade 3. The rotary blade 3 is rotatably supported by bearings 16 and 17 (see FIG. 2) provided at both ends of the casing 2. Since the bearings 16 and 17 are used under the scattering of talc or the like, it is preferable that the bearings 16 and 17 are made of a material that is a combination of ceramic and Teflon and can withstand oil-free lubrication.

The inlet base 4 is made of silicone rubber,
It is rotatably supported by a bearing 18 provided in the pocket portion 11 of the main body 1. A pulley 19 for transmitting a rotational force to the inlet cap 4 is provided on the outer peripheral portion of the inlet cap 4.

The outlet base 5 is made of silicone rubber,
It is rotatably supported by the main body 1 by a bearing 20 provided in the pocket portion 11 of the main body 1. A pulley 21 for transmitting a rotational force to the outlet cap 5 is provided on the outer peripheral portion of the outlet cap 5.

On the upper part of the main body 1, four pulleys 30, 3 are provided.
An intermediate shaft 34 to which 1, 32 and 33 are attached is rotatably supported. Pulley 30 and pulley 19
Belts 35, 36 and 37 are respectively wound around the space, between the pulley 32 and the pulley 15, and between the pulley 33 and the pulley 21, and the rotational force from the intermediate shaft 34 is generated by the inlet mouthpiece 4, the rotary blade 3, It is transmitted to the outlet base 5.

The drive motor 6 is a variable type motor whose rotation speed can be controlled. A pulley 40 is attached to the output shaft of the drive motor 6, and the belt 4 is provided between the pulley 40 and the pulley 31 attached to the intermediate shaft 34.
1, the rotational force from the drive motor 6 is transmitted to the intermediate shaft 34.

A discharge damper 5 is provided below the pocket portion 11.
0 and 51 are attached so that they can be opened and closed. The discharge dampers 50 and 51 are opened at regular time intervals by a timer (not shown), and release agent that has leaked from the inlet mouthpiece 4 and the outlet mouthpiece 5 and accumulated in the lower portion of the pocket portion 11 is transferred to the hopper portion 12. Let it fall.

Next, the operation of the coating apparatus A of the present invention will be described.

First, the release agent is supplied to the inside of the casing 2 from the supply port 13 in a fixed amount by a constant pump or the like. Next, the drive motor 6 is driven to rotate the spiral rotary blade 3, the inlet cap 4 and the outlet cap 5 in the casing 2 at 20 to 300 rpm via the pulley. As a result, the release agent supplied into the casing 2 is diffused and applied to the cable K introduced from the inlet cap 4 and passing through the casing 2. The hole diameter of the spiral rotary blade 3 is 60 mm, and the casing 2
The amount of the release agent in the inside can be always maintained at a level up to the pore size, and the amount of diffusion by the spiral rotary blade 3 can always be kept constant. The amount of the release agent applied can be arbitrarily adjusted by controlling the rotation speed of the spiral rotary blade 3 with the drive motor 6.

The cable K coated with the release agent passes through the outlet base 5 and is transferred to a device used in the next step, such as a crosshead.

Excessive release agent is extruded by the spiral rotary blade 3 and discharged to the outside of the casing 2. The released release agent passes through the hopper portion 12 and the bottom portion 1
It is collected in 2a, circulated to a metering pump and reused for coating.

According to the present invention, since the release agent can be uniformly applied to the surface of the cable K by the spiral rotary blade 3, the adhesion of the cable K is stabilized and the quality yield is improved. In addition, productivity can be improved.

Further, since the release agent is diffused by the spiral rotary blades 3 inside the casing 2, the diffusion volume of the release agent becomes small, and the diffusion of the release agent can be stabilized. As a result, the reliability of application of the release agent is improved.

Further, since the inlet cap 4 and the outlet cap 5 respectively provided at the inlet 1a and the outlet 1b of the main body 1 rotate, a swirl flow is generated inside the inlet cap 4 and the outlet cap 5, As a result, the release agent is prevented from flowing out, and the sealing property can be further enhanced.

The present invention is not limited to the above embodiment, and various changes can be made within the technical scope described in the claims.

For example, the structures, arrangements, materials, etc. of the main body 1, the casing 2, the rotary vanes 3, the inlet mouthpiece 4, the outlet mouthpiece 5, the drive motor 6 and the like are not limited to those described above, but may be changed as appropriate. can do.

Further, in the coating apparatus A of the present invention, the inlet 1a is rotated by rotating the inlet mouthpiece 4 and the outlet mouthpiece 5.
Since the sealing property of the outlet 1b is improved, it is not always necessary to provide the pocket portion 11 and the discharge dampers 50 and 51.

The coating apparatus A of the present invention can also be used for uniformly coating a coating material other than a release agent on the surface of a long material such as an electric cable or an optical fiber cable.

[0032]

According to the present invention, since the coating material can be uniformly applied to the surface of the long object by the spiral rotary blade, the adhesion of the long object is stable and the yield of quality is high. And productivity can be improved.

Further, since the coating material is diffused by the spiral rotary blades inside the casing, the diffusion volume of the coating material becomes small and the diffusion of the coating material can be stabilized. It leads to improvement of reliability.

Further, since rotatable mouthpieces are provided at the inlet and the outlet of the main body, a swirl flow is generated during rotation, which prevents the coated material from flowing out, and further enhances the sealing property. be able to.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a coating apparatus of the present invention.

FIG. 2 is a side sectional view showing an internal structure of a casing.

[Explanation of symbols]

 A: Coating device K: Cable (long product) 1: Main body 1a: Inlet 1b: Outlet 2: Casing 3: Rotating blade 4: Inlet mouthpiece 5: Outlet mouthpiece 6: Drive motor (driving means)

Claims (1)

[Claims] 1. A hollow casing provided with an inlet and an outlet through which a long product passes, and a hollow casing provided inside the main body, through which the long product passes, and which has a supply port and a discharge port for the coating material. A spiral rotary blade provided inside the casing and arranged so that the elongated object is aligned with a rotation axis; a spinner rotatably supported at an inlet and an outlet of the main body; And a driving unit that rotationally drives the spinneret, and a coating device.