JPH0521345Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an outer layer stripper for multilayer pipes that peels off the multiple layers of a multilayer pipe coated with an outer layer of synthetic resin, vinyl, or the like.

[Conventional technology]

Scissors or a cutter knife have been used as conventional outer layer strippers for multilayer pipes, but when scissors are used, it is difficult to maintain a constant strip length of the outer layer and requires skill. In addition, when using a cutter knife, it may damage the core that does not require peeling, and if you try to avoid this, the cut into the outer layer will be shallow and peeling will be difficult, so it requires a great deal of skill to use. .

Therefore, there is a proposal in Japanese Utility Model Publication No. 12041/1983.
The cladding stripper described in this publication has the following configuration.

A rotatable cylinder is fitted onto the end of the cladding tube, and the cylindrical body is rotated while applying pressure in the axial direction, thereby creating a blade capable of peeling off the coating material on the outside of the tube in a spiral manner. , is attached to one end in the axial direction of the rotary operation cylinder.

A shaft-like guide member is fixed to the rotary operation cylinder so as to pass through the shaft core of the internal space thereof, and the tip of the shaft-like guide member protrudes further than the blade in the direction of progress of peeling. A stopper member is provided inside the cylindrical body so as to be movable and fixed in the axial direction, for controlling the progress of peeling by coming into contact with the tube end surface.

According to the above-mentioned stripper, even if the finished outer diameter differs due to the difference in coating thickness even though the inner diameter and outer diameter are the same, there is a shaft-like guide member that guides the inner circumference of the pipe during stripping work. Since this is provided, there is no need to replace the stripper with a stripper having a different cylindrical inner diameter, and there is an advantage that the range of application can be expanded with one stripper.

However, if the tube has the same outer diameter but a smaller inner diameter, it cannot be inserted into the shaft-like guide member. Therefore, there was a problem in that it was necessary to prepare multiple types of strippers for pipes with different inner diameters.

[Problem that the invention attempts to solve]

Therefore, the object of this invention is to provide an outer layer stripper for multilayer pipes that can be used for multilayer pipes having different inner diameters.

[Means for solving problems]

For this reason, in this invention, a horizontal hole 2 is formed that penetrates the cylindrical body 1 in the axial direction, and a guide 7 is installed inside the horizontal hole 2, and a guide shaft 6 having different diameters is provided at both ends of the horizontal hole 2. A cutting blade 11 is attached to both side surfaces 8 of the housing 1, and the cutting blade 11 is attached to the guide shaft 6.
An angle 10 is formed with respect to a perpendicular line to the center line 9.

[Effect]

In the multilayer tube outer layer stripper according to this invention, the guide shafts 6 provided at both ends of the guide 7 have different diameters.

Therefore, the outer layer of a multilayer tube having different inner diameters can be peeled off using the guide shaft 6 on the side corresponding to the inner diameter.

〔Example〕

Hereinafter, embodiments of this invention will be described with reference to the drawings.

FIGS. 1 and 2 are overall perspective views showing an embodiment of this invention. The cylindrical body 1 is made of metal, synthetic resin, etc., and has a horizontal hole 2 that penetrates in the axial direction of the housing 1, and a hole is formed from the top surface 3 of the housing 1 so as to connect with the upper end of the horizontal hole 2. A groove 4 of an appropriate width is provided perpendicular to the upper surface 3 of the casing.

Next, a cylindrical guide 7 is provided with a guide shaft 6 having a diameter corresponding to the multilayer pipe 5 made of synthetic resin, vinyl, etc. and protruding from the side surface 8 of the housing 1, and this guide 7 can be press-fitted or screwed. It is fixedly provided inside the horizontal hole 2 with a stopper or the like.

Further, the side surface 8 of the housing 1 is formed at an angle 10 with respect to a line perpendicular to the center line 9 of the guide shaft 6,
Furthermore, there are two screws 12, 1 on both sides 8 of the housing 1.
A cutting blade 11 is fixedly attached to the cutting blade 2 by a cutting blade stopper plate 13. Multilayer tube 5 inserted into guide shaft 6
When the housing 1 is rotated and pushed into the end face 15 of the guide 7 as shown in FIG.
1, cut only the outer layer 14 into a spiral shape, and cut the end surface 15
When the housing 1 is further rotated after contacting the housing 1, the end of the cut spiral is cut into an annular shape. Further, when the housing 1 is pulled in the direction in which the multilayer tube 5 is removed from the housing 1, the end thereof is cut into an annular shape, and the multilayer tube 5 is shifted, the desired multilayer tube 5 with the outer layer 14 peeled off can be obtained.

As clearly shown in FIGS. 1 and 2, the depth of the cut made by the cutting blade 11 is determined depending on the relationship between the set position of the cutting blade 11 and the mounting position of the multilayer pipe 5.
In order to prevent the cutting blade 11 from damaging the core of the multilayer tube 5, the depth of the cut into the outer layer 14 is made slightly smaller than the thickness of the outer layer 14, and when stripping, the thickness without the cut is Tear it off.

FIG. 3 is a perspective view of a safety cover showing an embodiment of this invention. The safety cover 16 is a frame made of metal or synthetic resin, into which the housing 1 shown in FIG. It is attached to the housing 1 with a set screw 19 so that the user can work safely.

The peeling operation parts are provided on both sides of the housing 1. That is, by providing the guide shafts 6 at both ends of the guide 7 with the horizontal hole 2 as a through-hole hole, and making the diameter of one guide shaft 6 larger than the other, the outer layer of the multilayer pipe 5 that is compatible with each guide shaft 6 is formed. can be peeled off.

Further, although it is desirable to use the safety cover 16 for the protection of the operator, the outer layer peeling operation can be performed without providing it.

[Effect of idea]

This device has the above-mentioned configuration, and since the outer layer of multilayer pipes with different inner diameters can be peeled off using the guide shaft 6 on the side corresponding to the inner diameter, it can also be used for multilayer pipes with different inner diameters. A multi-layer pipe outer layer stripper can be proposed.

[Brief explanation of drawings]

Figure 1 is a perspective view of the housing, Figure 2 is a perspective view of the housing with a safety cover, Figure 3 is a perspective view of the safety cover,
4 and 5 are plan views of the casing, and FIG. 6 is a perspective view of the multilayer tube with part of the outer layer removed. DESCRIPTION OF SYMBOLS 1... Housing, 2... Horizontal hole, 4... Groove, 6... Guide shaft, 7... Guide, 10... Angle of the side surface of the housing with respect to the center line of the guide shaft, 11... Cutting blade, 1
2, 12... Set screw, 13... Cutting blade stop plate, 1
6...Safety cover.

Claims (1)

[Claims for Utility Model Registration] A horizontal hole 2 passing through the casing 1 in the axial direction is formed, and the horizontal hole 2 has a guide 7 provided at both ends thereof with guide shafts 6 having different diameters. A cutting blade 11 is attached to both side surfaces 8 of the housing 1, and the cutting blade 11 is attached to the guide shaft 6.
An outer layer stripper for a multilayer pipe, characterized in that the outer layer stripper is at an angle 10 with respect to a right angle to a center line 9 of the pipe.