JPS5917618Y2 - Continuous manufacturing equipment for plastic rectangular insulated metal tubes - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for continuously manufacturing a plastic rectangular insulated metal tube used for central heating or cooling.

Traditionally, plastic insulated metal pipes used for central heating, cooling, etc. are made by guiding the metal pipe and band-shaped plastic through a trumpet-shaped guide with a narrow end, and wrapping the plastic vertically around the metal pipe. A plastic insulated metal tube with a circular external shape was manufactured by joining both end faces.

However, in place of this type 1 plastic insulated metal tube, a rectangular plastic insulated metal tube that is easy to install, has no gaps between the tube and the wall to which it is attached, and is aesthetically pleasing has come to be required.

In order to meet such requirements, the present invention has developed a continuous manufacturing apparatus for plastic rectangular insulated metal tubes that has excellent productivity and excellent finished external dimensional accuracy.

That is, the present invention disposes a guide mechanism in which an upper lid guide roller and a lower lid guide roller are provided in parallel with each other at a distance and perpendicular to the direction of movement of the material at the front end of a metal guide in which an insertion hole is formed. A pressure roller and a width determining roller are respectively disposed at the front through a bonding mechanism that adheres or fuses the bonding surfaces of the upper cover and the lower cover, and the metal tube is inserted into the metal tube guide and is moved in the vertical direction. After guiding the strip-shaped plastic that will become the top lid below the top lid guide roller so as to cover it, and guiding the odd-shaped plastic that will become the bottom lid, which has a groove into which the metal tube is inserted, above the bottom lid guide roller. , the two are connected continuously.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 and 2 show an embodiment of the present invention,
In the figure, 1 is a base, and on this base 1 there are a metal tube guide 2, a guide mechanism 3, guide rollers 4, 4, a joining mechanism 5, a pressure roller 6..., and width determining rollers 7, 7. are arranged sequentially along the material progress direction (arrow direction).

The metal tube guide 2 has two parallel insertion holes 8, 8 each having a narrow trumpet-like end, and a bracket 9 provided at the bottom of the metal tube guide 2 is connected to a stud bolt installed in the base 1. It is fixedly supported by 10.

The guide mechanism 3 provided in front of the metal tube guide 2 has an upper lid guide roller 11 at the top and a lower lid guide roller 12 at the bottom perpendicular to the direction of movement of the material and parallel to it at intervals. be.

Furthermore, annular collar plates 13 and 13 are provided at both ends of the upper lid guide roller 11, respectively, to position the upper lid 14 in the width direction.

Further, a rectangular introduction port 16 for drawing the lower lid 15 into the apparatus is formed in a portion of the base 1 where the metal tube guide 2 and the guide mechanism 3 are located.

Further, in front of the guide mechanism 3, a guide roller 4° 4 is supported by a bracket 17.17, and further below the guide rollers 4, 4, a plate-shaped pedestal 18 is provided along the direction of movement of the material. This is the support post 19 installed at the four corners.
It is supported by...

Further, a width determining guide 20 is protruded from this pedestal 18, and an adjusting screw 21 for positioning is provided on the tip side, and a plate-shaped heating iron 22 is horizontally protruded above this. A joining mechanism 5 is provided.

Brackets 17, 17 arranged in front of this joining mechanism 5
Two pressure rollers 6... are attached to the base 1 in upper and lower stages, and in front of the pressure rollers 6, two width determining rollers 7. It is installed protrudingly.

To explain the operation of the device having the above structure, a rounded metal tube 24.24 such as a steel tube is continuously inserted into the insertion holes 8, 8 of the metal tube guide 2, and both metal tubes 24.24.
The vehicle is run while performing positioning in step 24.

On the other hand, as shown in Figure 3, a strip of plastic that will become the top cover 14 is continuously fed into the guide mechanism 3 from above the device.
It is guided below the upper lid guide roller 11.

In this case, the upper lid 14 has upper lid guide rollers 11 on both sides.
Since it is guided by the collar plate 13.13, positioning in the width direction is performed.

On the other hand, the lower cover 15 is made of a deformed plastic with an E-shaped cross section, in which two grooves 25 and 25 into which the metal tubes 24, 24 are inserted are formed along the longitudinal direction, and this is inserted through the inlet 16 formed in the base 1. It is pulled into the device and guided above the lower lid guide roller 12 of the guide mechanism 3.

The metal tubes 24, 24, the upper lid 14 and the lower lid 15, which are continuously fed in this way, are connected to the pedestal 18, the guide roller 4,
The metal tube 2
4.24 are sequentially fitted into the grooves 25 of the lower lid 15, and the upper lid 14 is placed over the top of the lower lid 15 and moved on the pedestal 18.

As the material moves toward the tip of the pedestal 18 in this way,
The joining surfaces 14a and 15a of the upper lid 14 and the lower lid 15 are melted by contacting the heating iron 22 of the joining mechanism 5 provided so as to be inserted between the joining surfaces 14a and 15a.

In this molten state, the bonding surfaces 14a, 15 are sent between the pressure rollers 6.6 and pressurized from above and below.
a is fused.

In this case, since they are restrained from both sides by the width determining rollers 7.7, the upper cover 14 and the lower cover 15 are fused together without coming apart.

The material joined in this manner is continuously taken off by a not-shown taking-off device to obtain a plastic rectangular heat-insulating metal tube 26 as shown in FIG.

Examples of the plastic material for the upper lid 14 and the lower lid 15 include foamed polyolefin such as foamed polyethylene and foamed polypropylene, and foamed polyvinyl chloride.

In addition, when low foam polyethylene is incorporated into an insulated metal pipe, the surface temperature becomes high and the amount of heat dissipated is relatively large. is improved and can exhibit excellent heat insulation properties.

In the above embodiment, the joining mechanism 5 for joining the upper lid 14 and the lower lid 15 is shown to be fused using a heating iron 22, but the present invention is not limited to this. It may also be something that glues both together.

As explained above, according to the continuous manufacturing apparatus for plastic rectangular insulated metal tubes according to the present invention, the metal tube is inserted into the groove of the lower lid, which has a groove into which the metal tube is inserted, while being guided by the guide mechanism. The metal tube guided through the tube guide is inserted, a top cover is placed over it, and the metal tube is guided and joined using a pressure roller and a width determining roller, resulting in excellent productivity and It is possible to obtain a plastic rectangular insulated metal tube with good finished external dimensional accuracy.

[Brief Description of the Drawings] Fig. 1 is a front view showing one embodiment of the present invention, and Fig. 2 is a front view showing an embodiment of the present invention.
FIG. 3 is a plan view of the figure, FIG. 3 is a perspective view showing the state before the metal tube, upper cover, and lower cover are assembled, and FIG. 4 is a perspective view showing the finished shape after combining FIG. 3.

Claims (1)

[Scope of utility model registration request] In front of the metal tube guide in which the insertion hole is formed, a guide mechanism in which an upper lid guide roller and a lower lid guide roller are arranged perpendicularly to the material traveling direction and parallel to each other with an interval is arranged, and further in front of this. A pressure roller and a width determining roller are respectively arranged through a bonding mechanism that adheres or fuses the bonding surfaces of the upper cover and the lower cover, so that the metal tube is inserted into the metal tube guide and covered from above and below. After guiding the strip-shaped plastic that will become the top lid below the top lid guide roller, and guiding the deformed plastic that will become the bottom lid, which has a groove into which the metal tube is inserted, above the bottom lid guide roller, both of them are Continuous production equipment for plastic rectangular insulated metal tubes that are continuously joined.