JPS5931181Y2 - Cladding layer removal tool for cladding tube - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tool for removing the coating layer of cladding tubes used in water supply, hot water supply, air conditioning equipment, etc.

When connecting cladding pipes to fittings or equipment, it is necessary to remove the cladding layer from the part to be connected. Traditionally, this removal work has been done using a utility knife, a rotary cutter, or an electric cutter. However, there were many problems with such tools.

In other words, when using a cutter knife, when cutting into the coating layer, the cutter easily reaches the pipe and damages the pipe. Pipes that are damaged in this way are susceptible to thermal expansion and contraction in piping for hot water supply, air conditioning, etc. The damage caused by repeated stress will gradually become larger, leading to water leakage accidents.Also, in the case of a single rotary cutter, if the coating layer is made of soft material, it will be difficult to cut the pipe, deforming the pipe, or damaging the coating. Cutting is performed based on the outer diameter of the layer, so if the coating layer has uneven thickness, it may damage the pipe as with a cutter knife, and furthermore, with an electric cutter, the coating layer will melt and cut. Therefore, the melted coating material may be welded to the pipe,
The toxic fumes from the coating material may cause harm to the human body, and
None of these methods were desirable, as the coating material would melt in windy and rainy environments, leading to a decline in work performance.

This idea was made in view of the above points, and it is possible to quickly and cleanly cut the coating layer with a simple operation without damaging or deforming the tube when removing the coating layer. This makes it easier to remove the coating layer, and will be described in detail below with reference to the drawings.

The cladding layer removal tool of this invention includes a cylindrical body 1 and a through hole 1d formed in the cylindrical wall 1C of the cylindrical body 1 in the longitudinal direction.
An arm 3 that is inserted through the cylinder wall 1C and passes through the inside of the cylinder wall 1C, a cutting blade 4 that is attached to the distal end of the arm 3 and provided at one end of the cylinder body 1, and that rotates with the rotation of the arm 3; The core frame 2a is erected, and the core member 2 is screwably attached to the other end of the cylindrical body 1. The outer diameter and the diameter of the core frame 2a of the core material 2 are determined to match the inner diameter of the cladding tube.

Further, when the arm 3 is in contact with the outer wall of the cylindrical portion of the cylindrical body 1 and positioned on the front side, as shown by the solid line in FIG. The arm 3 is supposed to cut into the coating layer, and the arm 3 cuts into the cylindrical body 1 as shown by the chain line.
The length of the cutting blade 4 is determined by the thickness of the coating layer of the cladding tube. It is decided according to the situation.

The arm 3 is approximately U-shaped, and after passing through the inside of the cylindrical wall 1C of the cylindrical body 1, it is folded back and bent toward the cylindrical side. 1 and rotates together with the cylindrical body 1, allowing the cutting blade 4 to be fixed at a fixed position during cutting.

Further, knurls 5 are carved on the outer surface of the cylinder wall of the cylindrical body 1,
It is also possible to eliminate slippage during rotation.

The core material 2 is inserted into the tube of the cladding tube and has a core frame 2a erected in the center for positioning the cladding tube during cutting. The end of 1 is screwable and can be attached or detached as appropriate depending on where the cladding tube is to be cut.

That is, as shown in FIG. 5A, when removing the coating layer at the end of the cladding tube A, the core material 2 is screwed onto the cylindrical body 1. If the coating layer to be removed is long or if the coating layer in the middle of the cladding tube A is to be cut, the core material 2 can be removed.

FIG. 3 shows another implementation of this invention, in which the core material 2
The core frame 2a has a pointed tip, and a plurality of deburring blades 6 are formed on the peripheral surface of the tip, thereby cutting the coating layer of the cladding tube and simultaneously removing welding burrs inside the cladding tube. can also be removed.

The manner of use of the coating layer removal tool constructed in this way will be explained next with reference to FIG. 4.

The cladding tube A consists of a tube a1 and a coating layer a2. First, the arm 3 is raised from the cylindrical body 1 and the cutting blade 4 is removed from the opening side of the cylindrical body 1, and then the core frame 2 is inserted into the tube a1. Insert the cladding tube A into the tool.

Next, by tilting the arm 3 toward the front so that it comes into contact with the cylindrical body 1, the cutting blade 4 rotates together with the arm 3, and the cladding tube A
The coating layer a2 is cut by cutting into the coating layer a2 and further rotating the tool body once.

Then, by pulling out the cylindrical body 1 to the right, the cutting blade 4
Since the cut covering layer is pressed and locked into the cylindrical portion 1b, the covering layer is retained within the cylindrical portion and is removed as it is.

Therefore, according to the tool of this invention, by simply rotating the arm and the tool body after inserting the cladding tube, the cladding layer can be easily removed with an extremely easy operation, and the cladding tube can be removed from the core material. Since the position is determined by the core frame, even if the thickness of the coating layer is uneven, the pipe will not come into contact with the cutting blade, and the pipe will not be damaged at all.

Moreover, since the core material is removable from the cylindrical body, the coating layer can be removed not only from the ends of the cladding tube but also from all parts of the cladding tube.Furthermore, if a deburring blade is formed at the tip of the core frame, This has the practical effect of simultaneously removing paris inside the pipe.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the tool of this invention, Fig. 2 is a sectional view thereof, Fig. 3 is a sectional view of another embodiment, Figs. No. 9 is a sectional view showing how it is used. 1... Cylindrical body, 2... Core material, 2a...
... Core frame, 3 ... Arm, 4 ...
Cutting blade, 5...knurling, 6...deburring blade.

Claims (1)

[Claims for Utility Model Registration] 1. A cylindrical body, a blade provided on one end side of the cylindrical body and connected to an arm penetrating the inside of the cylindrical wall of the cylindrical body, a core frame erected in the center, and It consists of a core material that is screwably attached to the other end of the cylindrical body, and a cutting blade that cuts into the coating layer by the rotation of the arm against the cladding tube inserted into the cylindrical part of the cylindrical body. A coating layer removal tool for a cladding tube, characterized in that the tool cuts the coating layer. 2. The cladding layer removing tool for a cladding tube according to claim 1, wherein the tip of the core frame has a pointed shape, and a deburring blade is formed on the peripheral surface of the tip. 3. The cladding layer removing tool for a cladding tube according to claim 1, wherein the arm that passes through the wall of the cylindrical body is folded back into a substantially U-shape. 4. The cladding layer removing tool for a cladding tube according to claim 1, wherein knurls are carved on the outer surface of the cylindrical wall of the cylindrical body.