JP3065498U - Cutting equipment for pipe-shaped foamed resin insulation - Google Patents

Abstract

(57) [Problem] Conventionally, the joining of pipe-shaped heat insulating materials for preventing frost from forming on a refrigerant pipe has been performed manually by eye examination, and it is extremely difficult to create a joint end face having an appropriate curved surface. there were. A cutting blade body (20) comprising a support frame (20) having upper and lower opposed portions (20p) connected in a substantially U-shape, and a heating wire (21) stretched between the support frames. 2) is installed on the base (1), the cutting blade has a substantially vertical rotation center axis (C), and the heating wire is turned around the rotation center axis. A holding stand (4) for holding the pipe material (P) is provided on a base which is separated from the body and opposed to the rotation center axis. The mounting position of the cutting blade with respect to the base is made variable, and the turning radius of the heating wire is arbitrarily set. The holding table may be configured to be slidable toward the rotation center axis of the cutting blade, or the holding table may be configured to be swingable toward the rotation center axis.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 TECHNICAL FIELD The present invention relates to a cutting device for a pipe-shaped foamed heat insulating material, and more particularly to a cutting device for forming a joint end face between foamed resinous pipe-shaped heat insulating materials in a curved shape.

[0002]

[Prior art]

 In order to prevent frost on the refrigerant pipes of refrigeration equipment, etc., the refrigerant pipes are covered with a pipe-shaped heat insulating material made of foamed resin (hereinafter abbreviated as “pipe material”). On the other hand, in the case of a configuration in which the pipe material is abutted and joined, it is necessary to form the joining end face of the abutting pipe material into a curved surface. Conventionally, the formation of such a curved surface has been made by visual inspection while taking into consideration the outer diameter of the heat insulating pipe to be joined, and at present, it has been created manually by using a thread saw or the like.

[0003]

[Problems to be solved by the invention]

 However, since there are various diameters of the pipe material and various specifications of the joining angle, it was extremely difficult to manually prepare a joint end face having an appropriate curved surface by examining the eye. Defects in the joint surface had a large effect on the heat insulation effect, such as the formation of frost in the gaps.

[0004] Furthermore, the manual operation using a yarn saw has a very low working efficiency, resulting in a delay in the construction period and a problem in working cost.

[0005]

【Purpose】

 In view of the above, the present invention has been made in view of the above-mentioned problem, and a novel and useful pipe-shaped foamed resin insulation material cutting device for the purpose of extremely easily and quickly forming a joint curved surface of a pipe material. To provide.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is configured as follows.

[0007] That is, there is an opposing portion (20p) that is opposed to the substantially vertical upper and lower positions, and the opposing portion (20p) is curved or bent so as to secure a certain air space between the opposing portions (20p). ), And a cutting blade (2) composed of a support frame (20), and a heating wire (21) stretched between opposing portions (20p) of the support frame (20). 1) The cutting blade body (2) is installed on the base, the cutting blade body (2) has a rotation center axis (C) substantially perpendicular to the base (1), and the heating line is connected to the rotation center axis (C). And a pipe-shaped foamed resin insulation material (P) is provided on the base (1) which is separated from the cutting blade body (2) and opposed to the rotation center axis (C). ) Is provided and provided with a holding table (4) for holding.

In the above, the mounting position of the cutting blade body (2) with respect to the base (1) is variable, and the turning radius of the heating wire (21) with respect to the rotation center axis (C) is arbitrarily set. It is characterized by doing so. The holding table (4) may be configured so as to be able to slide or move toward the rotation center axis (C) of the cutting blade body (2) or to be swingable. .

Further, the holding table (4) may be configured to be swingable toward the rotation center axis (C) of the cutting blade body (2). In addition to the support, an angle indicating scale (44) for setting the swing angle may be arranged on the shaft support (41a).

[0010] In the above description, the reference numerals in parentheses are added for reference in order to facilitate understanding of the configuration of the present invention, and it goes without saying that the present invention is not limited to the form on the drawings.

[0011]

[Embodiment of the invention]

 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a cutting device for a pipe-shaped foamed resin insulation material according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing the entire cutting apparatus of the present embodiment. FIGS. 2, 4, and 7 are side views showing the cutting operation state, and FIGS. 3, 5, and 6 are plan views showing the cutting operation state. In the description of the present invention, directions in the drawings may be used, but the present invention is not limited thereto.

The cutting apparatus according to the present embodiment mainly includes a base 1 serving as an entire support base, a cutting blade body 2 serving as cutting means mounted and held on the base 1, and a cutting object. And a holding table 4 on which a certain pipe material P is placed and held.

The base 1 is formed by arranging legs 11 at four corners on the back side of a rectangular plate-shaped substrate 10, and has a guide groove 12 extending through a substantially central portion of the substrate 10 in a longitudinal direction. I have. A cutting blade 2 is disposed on the base 1 at one end of the guide groove 12. The cutting blade body 2 has opposing portions 20p opposed to each other in a substantially vertical upper and lower position, and connects the opposing portions 20p in a bent shape so as to secure a certain space between the opposing portions 20p. And a heating wire 21 stretched so as to connect between opposing portions 20p of the support frame 20. The lower frame portion 201 of the support frame 20 is connected to the base 1 via the universal mount 3. Mounted on top.

The free mount 3 is connected so that its upper end 30 is engaged and slid in a long slide hole 20 s formed in the lower frame portion 201 to be fixed at an appropriate position. In addition, a hinge portion 31 is formed below the upper end portion 30 so as to be swingable, and furthermore, a hinge 32 that rotatably supports the hinge portion 31 is formed.

In addition, a radius setting scale 20 m for adjusting the turning radius of the heating wire 21 to the radius of the pipe material on the joining side is engraved in the slide long hole 20 s. The heating wire 21 is made of, for example, a nickel chrome wire which is electrically insulated from the support frame 20 and is heated to a temperature at which the pipe material can be sufficiently blown by an external power supply means (not shown). ing. As the power supply means, for example, a power supply including an AC-DC conversion power supply, a generator, a battery and the like and a voltage / current regulator may be appropriately combined.

Next, the holding table 4 is slidably mounted in the guide groove 12. The holding base 4 is for placing and holding the pipe material P in position, and is provided with a sliding base 40 that engages with and slides in the guide groove 12, a column 41 erected on the sliding base 40, And it is arranged on the base 1 via a mounting piece 42 connected to a shaft support 41a at the top of the support 41.

More specifically, the slide pedestal 40 slides with the concave groove 40g formed on the opposite end face guided by the opposite side 12a along the longitudinal direction of the fitted guide groove 12, and slides the lever 40l. Thus, the guide groove 12 is temporarily fixed at an arbitrary position. Further, on the upper surface of the slide pedestal 40, a support column 41 in which two members are arranged side by side is integrally formed, a shaft support portion 41a is provided on the top thereof, and a mounting piece is provided on the upper portion of the shaft support portion 41a. The holding table 4 is attached via 42.

The holding table 4 has a substantially V-shaped gutter shape so that pipe materials P of various diameters can be placed horizontally and held, and the end on the side facing the cutting blade body 2 is removed at an acute angle. ing. Further, the shaft support portion 41a of the support 41 and the mounting piece 42 of the holding table 4 can be fixed at an arbitrary swing position along an imaginary plane perpendicular to the base 1 including the rotation center axis C of the cutting blade body 2. It is connected by the tightening screw 43 so that Further, an angle indicating scale 44 for setting the inclination angle of the holding table 4 is engraved on the mounting piece 42.

In addition to the holding table 4 on which the pipe members P of various diameters are placed along the direction of the guide groove 12, the base 1 has an end near the cutting blade 2 side of the guide groove 12. The guide body 5 is arranged at the center. The guide body 5 is a member having a wall shape with an inverted T-shaped cross section, and is mounted near the longitudinal edge piece of the guide groove 12 so as to be rotatable along the base 1 with a rotation axis.

[0021]

[Operation of this embodiment]

 The present embodiment configured as described above operates as follows. First, the abutment angle (for example, 90 degrees, 45 degrees, 30 degrees, etc.) to the pipe material to be joined is measured, and the inclination of the holding table 4 in the direction of the rotation center axis C with reference to the swing angle indicating graduation 44. The angle is set (arrow a). Here, FIGS. 2 and 3 are a side view and a plan view, respectively, showing settings when the butting angle is 90 degrees (T-shaped), and FIGS. 4 and 5 show settings when the butting angle is 45 degrees.

Next, the outer diameter of the pipe material to be joined is measured, and the turning radius of the heat generating wire 21 that rotates around the rotation center axis C is set by the radius setting scale 20 m (arrow b). After this setup, the cutting blade 2 is once rotated to avoid the heating wire 21 to the side, and the pipe material P to be cut is placed on the holding table 4.

Subsequently, when the center of the distal end of the pipe material P is extended to a position intersecting the rotation center axis C of the cutting blade body 2, the pipe material P is held and fixed by a hand or the like (arrow c), and the heating wire 21 is energized. The cutting blade 2 heated to a sufficient temperature is rotated substantially half a turn (arrow d). As a result, the pipe material P made of a foamed resin is easily blown off by the heat of the heating wire 21, and the cut surface is formed into a smooth, continuously curved and beautiful joint surface.

Separately from this, the pipe member P is placed horizontally along the guide body 5 on the base 1 and held, and the hinge portion 31 of the universal mount 3 holding the cutting blade 2 is loosened. Then, the cutting blade 2 is rotated toward the guide groove 12 to form a plane cut surface (a so-called ring-shaped shape) (arrow e). At this time, the pipe material P is cut at an appropriate cutting angle by appropriately setting the turning angle of the guide body 5 on the base 1. In order to obtain a flat cut surface, appropriate fixing means may be provided (not shown) so that the rotating pedestal does not turn during cutting.

[0025]

[Possibility of other embodiments]

 In order to achieve the object of the present invention, this embodiment can be modified as follows.

That is, in this embodiment, the holding table 4 is configured to match the joining angle of the pipe material P, and the heating wire 21 is used to form a cut surface that matches the outer diameter of the pipe material to be joined. However, the configuration of the present embodiment is not limited as long as the spatial arrangement between the pipe material P and the turning surface of the cutting blade can be arbitrarily set. Therefore, for example, it is also possible to adopt a configuration in which the cutting blade body 2 is turned around a tiltable axis. In this case, a swing mechanism around the shaft support portion 41a of the holding table 4 becomes unnecessary.

[0027]

【effect】

 According to the pipe-shaped foamed resin heat insulating material cutting device according to the present invention having the above-described structure, it is possible to extremely easily, accurately, and appropriately form a joint curved surface between the heat insulating pipe materials. Moreover, since the equipment itself can be transported, it can be brought to the site and responded promptly, and it has excellent on-site workability and no chip generation. It is worth noting.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire cutting device of the present embodiment.

FIG. 2 is a side view showing a cutting operation state of the embodiment.

FIG. 3 is a plan view showing a cutting operation state of the embodiment.

FIG. 4 is a side view showing a cutting operation state of the embodiment.

FIG. 5 is a plan view showing a cutting operation state of the embodiment.

FIG. 6 is a plan view showing a cutting operation state according to the embodiment.

FIG. 7 is a side view showing a cutting operation state of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 10 Substrate 11 Leg part 12 Guide groove 12a Opposite side 2 Cutting blade 20 Support frame 20p Opposition part 20l Lower frame part 20s Slide long hole 20m Radius setting scale 21 Heat generation wire 3 Free mounting base 30 Upper end part 31 Hinge part 32 Rotating pedestal 4 Holding pedestal 40 Sliding pedestal 40g Groove 40l Lever 41 Support 41a Shaft support 42 Mounting piece 43 Tightening screw 44 Angle indicating scale 5 Guide body C Rotating center axis CP Pipe material

Claims (5)

[Utility model registration claims] An opposing portion (2) opposing a substantially vertical upper and lower position.
0p), and has a curved or bent opposing portion (2p) so as to secure a certain air space between the opposing portions (20p).
0p), and a support frame (20)
0) The heating wire (2) stretched between the opposing portions (20p).
A cutting blade body (2) comprising: (1) is mounted on a base (1), and the cutting blade body (2) is substantially perpendicular to the base (1). And the heating wire is configured to rotate around the rotation center axis (C), and is separated from the cutting blade body (2) and opposed to the rotation center axis (C). An apparatus for cutting a pipe-shaped foamed resin insulation material, comprising a support (4) for placing and holding a pipe-shaped foamed resin insulation material (P) on the table (1). 2. The turning position of the heating wire (21) with respect to the rotation center axis (C) can be arbitrarily set by making the mounting position of the cutting blade (2) to the base (1) variable. The pipe-shaped foamed resin insulation material cutting device according to claim 1, characterized in that: 3. The holding table (4) is configured to be slidable toward a rotation center axis (C) of the cutting blade body (2). 3. The apparatus for cutting a pipe-shaped foamed resin insulation material according to 2. 4. The holding table (4) is configured to be capable of swinging toward a rotation center axis (C) of a cutting blade (2). 4. The cutting device for a pipe-shaped foamed resin heat insulating material according to 3. 5. In a configuration in which the holding table (4) can be swung, the holding table (4) is pivotally supported and the shaft supporting section (41) is supported.
5. A cutting device for a pipe-like foamed resin insulation material according to claim 4, wherein an angle indicating scale (44) for setting a swing angle is arranged in a).