JP2608673B2 - Non-ceramic insulator manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a fiber reinforced synthetic resin (F
RP) and made of rods, it relates to manufacturing apparatus of a non-ceramic insulator having an insulation overcoat member made of elastic insulating material, more particularly to a front surface machining apparatus of the FRP rod.

[0002]

2. Description of the Related Art In recent years, demand for non-ceramic insulators has been increasing. In general, a non-ceramic insulator has a structure in which an outer peripheral portion of an FRP rod is covered with an insulating mantle.

A rod made of FRP has a cylindrical shape and is formed by impregnating and curing a fiber bundle arranged in the axial direction of an insulator or a knitted or woven fiber bundle with a synthetic resin such as an epoxy resin. I have. Therefore, the rod made of FRP has an extremely large tensile strength and a strength-to-weight ratio, has a high dielectric strength, and is most suitable as a core material of a non-ceramic insulator.

[0004] The insulating mantle is made of silicon rubber or EP.
It is made of an elastic insulating material such as DM (ethylene-propylene-butadiene copolymer) rubber, and seamlessly covers the outer peripheral portion of the FRP rod to improve weather resistance and tracking resistance.

[0005]

Incidentally, rods made of FRP are generally manufactured by drawing using a drawing die in order to increase productivity. Therefore, at the time of drawing, it is necessary to improve the slip between the FRP and the drawing die to lower the drawing resistance. Therefore, an internal release material is used. That is, a particulate internal release material is kneaded into the synthetic resin so that the internal release material is uniformly dispersed in the synthetic resin.
Then, by heating the synthetic resin during the drawing process, the internal release material dispersed in the synthetic resin is transferred to the surface of the rod being formed by the drawing process. The internal mold release material transferred to the surface of the rod acts as a lubricant, thereby improving the sliding between the FRP and the drawing die and reducing the drawing resistance.

However, a thin layer of an internal release material is formed on the surface of the rod made of FRP after the drawing process. The internal release material layer on the surface of the FRP rod also functions as a release material when covering the rod with the insulating mantle, preventing the rod surface from being bonded to the elastic insulating material of the insulating mantle. . For this reason, there is a problem that the secure fixation between the FRP rod and the insulating mantle is hindered. This problem also occurs in a case where the drawing process is performed while applying the release material to the drawing die without using the internal release material.

In order to solve this problem, the internal release material layer on the surface of the rod made of FRP may be polished and removed. Therefore, conventionally, sandpaper was manually applied to the surface of the rod made of FRP.

However, this operation must be performed for each rod made of FRP. in addition,
Skill is required to polish the surface of an FRP rod uniformly and reliably by hand. For this reason, there has been a problem that work efficiency is extremely poor and productivity cannot be increased.

The present invention has been made to solve this problem, and an object of the present invention is to polish the surface of an FRP rod uniformly and reliably with high working efficiency. It is an object of the present invention to provide a possible non-ceramic insulator manufacturing apparatus .

[0010]

[0011]

Since the present invention SUMMARY OF THE INVENTION The to solve the above problems, this invention is a non-ceramic insulator manufacturing instrumentation
And rotating at the same rotational speed in the same direction.
Position the hourglass rollers so that their centers are on a straight line.
And so that each axis is located on the same plane.
And each axis is perpendicular to the transport direction of the rod.
Before being arranged in rows so as to form a certain angle excluding corners
The transport device of the rod and the transport device
Sand blasting the surface of the coming rod
The gist of the present invention is to include a deblasting apparatus main body .

[0012]

[0013]

Therefore, according to this invention, the transport device, the fibers
A rod made of reinforced synthetic resin is
It is possible to advance (that is, transport)
Can be. Therefore, the sandblasting machine main body
Uniformly sand the surface of the rod made of fiber reinforced synthetic resin.
Can be blasted .

[0014]

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to solve the above problems, the surface of a rod made of FRP may be sandblasted. Less than,
One embodiment of a sandblasting apparatus for that purpose is shown in FIG.
This will be described with reference to FIG.

FIG. 1 is a plan view of a sandblasting apparatus according to this embodiment. FIG. 2 is a front view of the sandblasting apparatus as viewed from the direction of arrow A in FIG. FIG. 3 is a side view of the sandblasting apparatus viewed from the direction of arrow B in FIG.

As shown in FIGS. 1 to 3, the sand blasting device includes a transport device 10 for a cylindrical FRP rod (hereinafter abbreviated as a rod) W as a member to be polished, and a sand blasting device main body 11. It is composed of
The dimensions of the rod W are 16 to 100 mm in diameter and 10 mm in length.
It is 00 to 3000 mm.

The transport device 10 is constituted by a plurality of urethane drum-shaped rollers 12. Each drum-shaped roller 1
2 are arranged in line such that their centers are located on a straight line and their axes 12a are located on the same plane. Each drum-shaped roller 12 has its own axis 1 with respect to the traveling direction of the rod W (the direction of arrow B shown in FIG. 1).
2a are arranged so as to form a certain angle (θ shown in FIG. 1) except for a right angle. Here, the axis 1 of each drum roller 12
2a is driven by a drive device (not shown) including a bevel gear and a chain. Therefore, each drum-shaped roller 1
Reference numeral 2 is adapted to rotate at the same rotational speed in the same direction about the shaft 12a.

FIG. 4 is a perspective view of a main part showing a positional relationship between the rod W and each hourglass roller 12. As shown in FIG. FIG. 5 is a plan view of FIG. As shown in FIGS. 1 to 5, the rod W is placed on each hourglass roller 12. As shown in FIGS. 4 and 5, each hourglass roller 12 has a shaft 12 a as a center.
When each of the rods W is rotated in the direction of arrow C, the rod W has a force to rotate around the center axis of the rod W (in the direction of arrow D).
And a force that advances in the axial direction (the direction of arrow B). Therefore, the rod W causes a screw motion, and advances in the axial direction (the direction of the arrow B) while rotating around the center axis. That is, the rod W is conveyed in the direction of the arrow B while rotating around the center axis.

Here, the rotation speed and the traveling speed of the rod W vary depending on the angle formed between the shaft 12a of each hourglass roller 12 and the central axis of the rod W, and the rotational speed of each hourglass roller 12. In other words, to adjust the rotation speed and the traveling speed of the rod W, the shaft 12
What is necessary is just to change the angle formed by a and the central axis of the rod W, and the rotation speed of each hourglass roller 12. In this embodiment, since the angle (θ shown in FIGS. 1 and 5) formed by the shaft 12a of each hourglass roller 12 and the center axis of the rod W is fixed, the rotation speed and the traveling speed of the rod W In the case of adjustment, the rotation speed of each hourglass roller 12 is changed.

Since each hourglass roller 12 has the same shape (hourglass) and the same size, the center axis of the rod W is always positioned at the same position (that is, each axis) regardless of the diameter of the rod W. (On a straight line connecting the centers of the hourglass rollers 12).

Next, the sandblasting apparatus main body 11 will be described. Since the sand blasting apparatus main body 11 is very general, the description will be limited to only the main parts.

As shown in FIGS. 1 to 3, the sand blasting machine main body 11 includes three automatic nozzles 13, an automatic nozzle oscillating device 14, a cabinet 15, a blast material collecting device 16, a blast material hopper. 17, a dust collector 18, an air pipe 19, a control panel 20, a foot switch 21,
And two manual nozzles 22.

Each automatic nozzle 13 and manual nozzle 22
Is a gravity type projection nozzle. Ceramic (alumina or the like) particles having a diameter of 180 μm are used as the projection material. The blast conditions are: blast pressure;
1.5-3 kg / cm ² , flow rate: 25-30 m / sec.

The three automatic nozzles 13 are arranged in the traveling direction of the rod W (the direction of arrow B). Each of the automatic nozzles 13 is configured to perform a swinging motion in the same direction with respect to the traveling direction of the rod W by a crank type automatic nozzle swinging device 14 using an eccentric disk (number of times of swinging;
120 times / minute, swing angle; 0 to 34 ° (adjustable)).

Each automatic nozzle 13 and manual nozzle 22
Are housed in a steel plate cabinet 15. FIG.
As shown in FIG.
a and an inspection door 15 provided with a rubber glove 15b for manual work
c is provided so as to be openable and closable. Also, at the entrance of the rod W, four quadruple rubber curtains are provided,
The projection material is prevented from scattering outside the cabinet 15.

The blast material collecting device 16 employs a pneumatic transport system utilizing negative pressure of a dust collector 18, and blast material separation is cyclone separation. The projectile hopper 17 is made of steel and has an inspection window.

The dust collector 18 employs a dry external filtration system, and collects dust with a fan provided inside. The air pipe 19 is for blast and air blow.

The control panel 20 has switches 20a for control.
Is provided. The foot switch 21 is used when sandblasting is performed manually by the manual nozzle 22.
This is a switch for switching between projection and non-projection of the manual nozzle 22.

Next, the operation of the sandblasting apparatus configured as described above will be described. First, as shown in FIGS. 1 and 2, one rod W to be sandblasted is placed on each hourglass roller 12 one by one. Then, each drum-shaped roller 12 is rotationally driven. Then, the rod W is conveyed in the direction of the arrow B while rotating about the central axis as the axis, and passes through the rubber curtain 15d and moves through the cabinet 15D.
Conveyed inside.

Then, the rod W is subjected to sandblasting by the blast material projected from each automatic nozzle 13. Here, the three automatic nozzles 13 perform a swing motion in the same direction as the traveling direction of the rod W. Also,
The rod W rotates around a central axis. Therefore, the surface of the rod W is polished uniformly and reliably by sandblasting. The polishing depth is
The diameter is set to about 1/100 to 2/100 with respect to the diameter of the rod W. With this level of polishing, the internal release material layer on the surface of the rod W can be reliably removed.

At this time, the processing state of the rod W can be observed from the viewing window 15a on the side of the cabinet 15. Therefore, when there is uneven finish (polishing unevenness) in the processing state of the rod W by the automatic nozzle 13, manual sandblasting by the manual nozzle 22 can be performed instead of sandblasting by the automatic nozzles 13. . In other words, the worker can use the rubber glove 1 for manual work.
5b, the user operates the foot switch 21 while visually observing the processing state of the rod W through the viewing window 15a.
To cause the manual nozzle 22 to project the projectile onto the rod W. Also at this time, since the rod W is conveyed while rotating around the center axis, it is easy to uniformly polish the surface of the rod W.

As described above, in the present embodiment, the rod W is conveyed while being rotated about the central axis by the conveying device 10, and the surface of the rod W is sandblasted by the sandblasting device main body 11. ing. Therefore, the surface of the rod W can be polished uniformly and reliably with high work efficiency.

The present invention is not limited to the above embodiment. For example, the projection material may not be ceramic particles. Further, the diameter need not be 180 μm. Further, the automatic nozzle 13 does not need to perform the swing motion. Further, the material of the hourglass roller 12 may not be urethane.

[0035]

As described in detail above, according to the present invention, the surface of the rod made of FRP can be uniformly and reliably formed with high working efficiency.
There is an excellent effect that can be sandblasted .

[Brief description of the drawings]

FIG. 1 is a plan view of a sandblasting apparatus according to one embodiment of the present invention.

FIG. 2 is a front view of the sandblasting apparatus as viewed from the direction of arrow A in FIG.

FIG. 3 is a side view of the sandblasting apparatus as viewed from the direction of arrow B in FIG.

FIG. 4 is a perspective view of a main part showing a positional relationship between a rod W and each hourglass roller 12;

FIG. 5 is a plan view of FIG. 4;

[Explanation of symbols]

10: conveying device, 11: sandblasting device main body,
12: drum-shaped roller, 12a: drum-shaped roller shaft, W: FR
P rod

Claims (1)

(57) [Claims] 1. A rod (W) made of a fiber-reinforced synthetic resin,
Vulcanized adhesive elastic covering the outer periphery of the rod (W)
Non-ceramic insulator with an insulating mantle made of rim material
Before covering the outer periphery of the rod (W) of the child with an insulating mantle
A non-ceramic insulator manufacturing apparatus for sandblasting the surface of the rod (W). A plurality of hourglass-shaped rollers (12) rotating at the same rotational speed in the same direction at the center of each of them. So that they are located on a straight line, and their axes (12a) are located on the same plane,
A transfer device (10) for the rod (W) configured such that the respective shafts (12a) are arranged in rows so as to form a certain angle (θ) except for a right angle to the transfer direction of the rod (W).
And a sand blasting device main body (11) for sand blasting the surface of the rod (W) conveyed by the conveying device (10).