JP2593454Y2 - Cutting machine for synthetic resin pipe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device capable of cutting a synthetic resin pipe extruded from a die along an axial direction.

[0002]

2. Description of the Related Art Conventionally, when a synthetic resin pipe is extruded, a softened pipe extruded from a die is cooled with cooling water while being formed by a foamer, and the pipe is taken to a predetermined length by a take-up machine. I am disconnected. Since the molding conditions are not stable at the start-up stage of the extrusion molding, the pipe immediately after being extruded from the die is cut off with a cutter or the like and discarded.

[0003]

[Problems to be Solved by the Invention] However, in the past, the operator cut the pipe extruded from the base by hand using a cutter or the like, so that the worker accidentally touched the base and caused a burn. In some cases, the work could not be completed due to cutting of pipes or breakage of pipes.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a cutter which can easily and surely cut a synthetic resin pipe extruded from a die along an axial direction.

[0005]

In order to achieve the above object, the present invention provides an axially extending support plate on an outer periphery of a ring body fixed to an outer periphery of a tip of a base, and a front end of the support plate. The other end of the angle member is rotatably supported at one end, and a cutting blade is attached to the other end of the angle member. In addition, one end of the gripping member is rotatably supported at the intermediate portion of the angle member, and the intermediate portion of the gripping member and the rear end of the support plate are pivotally swingable via a connecting member. It is characterized by being supported.

[0006]

With the above construction, when the gripping member is swung to the front side where the cutting blade body is located and pushed down, the cutting blade body attached to the angle member descends and the synthetic resin pipe extruded from the die. Bites into the outer peripheral surface of.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a pipe cutter showing one embodiment of the present invention, and FIG. 2 is a front view of the cutter, wherein 1 is a ring body. The ring body 1 includes half members 1a and 1b, and one end of each of the half members 1a and 1b is
Are openably and closably connected. Also, the half member 1
A hook 12 and a hooking piece 13 are provided at the other end of the a and 1b. The hook 12 and the hooking piece 13 are engaged with each other to fix the ring body 1 to the outer periphery of the tip of the base D. ing.

A support plate 2 extending in the axial direction is provided on the outer peripheral upper surface of the ring body 1. One end of an angle member 3 bent in an L-shape is provided at the front end of the support plate 2 by a pin P1. It is supported rotatably. That is, a pair of angle members 3 are pivotally supported with both side surfaces of the support plate 2 held therebetween, and a support portion 31 is provided at the other end of the angle member 3 extending substantially in the horizontal direction. The cutting blade body 4 is inserted into the support portion 31 and is mounted so as to be slidable in the vertical direction, so that the cutting blade body 4 can be fixed at an appropriate position by the thumb screw 32.

One end of the gripping member 5 is rotatably supported by a pin P2 at an intermediate portion of the angle member 3. The intermediate portion of the gripping member 5 and the rear end of the support plate 2 are connected to each other. Are pivotally supported via a connecting member 6. That is,
One end of the connecting member 6 and an intermediate portion of the gripping member 5 are pin P3.
The other end of the connecting member 6 and the rear end of the support plate 2 are rotatably connected by a pin P4.

The pipe cutter according to the present invention has the above-mentioned structure. In the initial stage when the operation of the extruder is started, the handle 51 of the gripping member 5 is grasped by hand and the cutting blade body 4 is positioned in front. Push it down to the side. Then, as shown in FIG. 1, the pin P3 is set below the straight line L connecting the pins P2 and P4. Then, the angle member 3 rotates, and the cutting blade body 4 attached to the angle member 3
Descends into the outer peripheral surface of the synthetic resin pipe P extruded from the base D.

When the cutting blade body 4 bites into the outer peripheral surface of the synthetic resin pipe P, the angle member 3 receives the cutting resistance of the pipe P extruded from the mouthpiece D and generates a rotational force about the pin P1 in the angle member 3, and A thrust S acts along a straight line L. At this time, since the pin P3 connecting the intermediate portion of the gripping member 5 and the connecting member 6 is located below the straight line L,
Even when the grip 51 is released, the gripping member 5 does not return to its original position, and the synthetic resin pipe P extruded from the mouthpiece D is cut continuously along the axial direction. Next, after the operation of the extruder is stabilized, the cut synthetic resin pipe P is cut off, the handle 51 of the gripping member 5 is gripped by hand, and the cutting blade body 4 is flipped up. Start extrusion molding.

[0012]

[Effects of the Invention] As described in detail above, the pipe cutter of the present invention is used by being fixed to the outer periphery of the tip of the base, so that the operator does not inadvertently touch the base and cause burns. The synthetic resin pipe can be reliably cut along the axial direction.

[Brief description of the drawings]

FIG. 1 is a side view of a pipe cutter according to an embodiment of the present invention.

FIG. 2 is a front view of the pipe cutter shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ring body 2 Support plate 3 Angle member 4 Cutting blade body 5 Holding member 6 Connecting member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B26D 1/06 B29C 47/08 B26D 1/02

Claims (1)

(57) [Scope of request for utility model registration] 1. A cutting device for incising a synthetic resin pipe extruded from a die along an axial direction, wherein the cutting device is axially formed on an outer periphery of a ring body (1) fixed to an outer periphery of a tip end of a die (D). An extending support plate (2) is provided, one end of an angle member (3) is rotatably supported at a front end of the support plate (2), and a cutting blade is provided at the other end of the angle member (3). Body (4)
And one end of a gripping member (5) is rotatably supported at an intermediate portion of the angle member (3), and an intermediate portion of the gripping member (5) and the support plate (2) are supported. A synthetic resin pipe cutter, wherein the rear end is pivotally supported via a connecting member (6).