FI12831Y1 - Device for beveling a pipe end - Google Patents

Abstract

Device for chamfering a pipe end, characterized in that the device (5) comprises a flat body part (6), in the body part means for attaching it to an adapter (9) to be placed in the seat of a hand-held drilling machine, at least two shaped part which can be adapted to settle inside the pipe (1) to be chamfered and on the outer circumference of the body part (6) chamfering means for chamfering the outer edge of the end (2) of the pipe (1). In addition, protection requirements 2-7.

Description

A device for beveling the end of a pipe

Background of the invention

The invention is related to the beveling of the end of a pipe and especially to the beveling of the end of a plastic pipe.

For example, when installing sewer pipes, it is recommended to form a chamfer in the pipe before installing the pipe in a sleeve or other connection. Forming a bevel with, for example, a knife is difficult, laborious and uncertain in its end result, especially in construction site conditions. On the other hand, devices for chamfering are typically complex, cumbersome and expensive.

Brief description of the invention

The goal of the invention is thus to develop a new type of device for beveling the end of a pipe. The solution according to the invention is characterized by what is said in the independent protection claims. Some embodiments of the invention are subject to non-independent protection claims.

In the presented solution, the device for chamfering the end of the pipe has a flat body part with means for attaching it to an adapter to be placed in the chuck of a hand-held drill. Furthermore, the body part has at least two shaped parts directed forward from the body part, such as pins, which can be adjusted to fit inside the pipe to be chamfered. The outer circumference of the body part has — chamfering means for chamfering the outer edge of the tube end. Such a device is simple and easy to use even in construction site conditions. The bevel on the outer edge of the pipe can be made easily and reliably.

According to one embodiment, the chamfering means comprise saw blade teeth arranged in a slanted position forward of the body part. Such a ra-

The Q 25 kenne is efficient and reliable.

N According to one embodiment, the chamfering means comprise a bevelled rim formed on the outer circumference of the frame part of the wheel, fitted forward from the frame part, on the surface of which a pipe working surface is formed. Working on the pipe = the surface can include, for example, protrusions, grooves and/or roughening. Such a structure is simple and durable and functional in use.

O According to one embodiment, the body part has at least three,

S preferably at least four shaped parts directed forward from the body part, which are

N can be adjusted to fit inside the pipe to be chamfered. In this way, the pipe to be beveled can be aligned to be centered in relation to the device. In this case, the chamfer can be formed precisely and reliably in connection with the outer edge of the pipe end.

According to one embodiment, the shaped parts are formed in such a way that when the device is used, they remove the stub from the end of the pipe. In this case, the device creates a chamfer on the end of the pipe and at the same time the end of the pipe is made neat for installation.

Brief description of the patterns

The invention will now be explained in more detail in connection with some embodiments, referring to the accompanying drawings, of which:

Fig. 1a shows the end of a pipe cut off by sawing;

Fig. 1b shows the end of the tube shown in Fig. 1a with a chamfer formed on it;

Figure 2 schematically shows a device for chamfering the end of a pipe, viewed from the side;

Fig. 3 schematically shows the device according to Fig. 2 viewed obliquely from the front; and

Figure 4 schematically shows another device for chamfering the end of the pipe, viewed obliquely from below.

Detailed explanation

Figure 1a shows pipe 1 viewed from the side and in cross-section. Pipe 1 can be, for example, a plastic pipe made of, for example, polyethylene PE, polypropylene PP or cross-linked polyethylene PEX. Pipe 1 can be, for example, a so-called HTP sewer pipe or a Decibel sewer pipe. The outer diameter of pipe 1 can be something between, for example, 20-500 mm.

Q 25 In the embodiment of Figure 1a, the end 2 of the tube 1 is cut by sawing.

N The end 2 of the pipe 1 is, for example, after cutting the pipe such that the wall of the end 2 of the pipe has the same thickness as far as the end 2 of the pipe 1. Furthermore, the sawing 2 creates 2 braces 3 at the end of the pipe 1. The braces 3 are thus created as a result of the sawing and they can be, for example, pieces of the pipe or scraps or > 30 —unevennesses.

O So that end 2 of pipe 1 can be reasonably easily installed with another

S of a pipe, a hole made in another pipe, a connection sleeve or other similar connection cap-

N inside the pale, a chamfer 4 is formed at the end 2 of the tube 1, as shown in figure 1b. The formation of the chamfer 4 naturally removes the stubs 3 from the outer edge of the end 2 of the pipe 1. In the embodiment of Figure 1b, the ends 3 have also been removed from the inner edge of the end 2 of the pipe 1. According to one embodiment of the device 5 presented in this explanation, using the device to form the chamfer 4 simultaneously removes the ends 3 from the inner edge 2 of the end of the pipe 1.

The chamfer 4 is formed on the outer edge of the end 2 of the tube 1. Forming a chamfer at the end of a pipe is called chamfering, chamfering or chamfering. This procedure is also called seevaus.

Figures 2 and 3 show a device 5 for chamfering the end 2 of the pipe 1. The device 5 has a round and flat frame part 6. The outer diameter of the frame part 6 can be slightly larger than the outer diameter of the pipe 1 for which the device is intended to be used for chamfering.

Pins 7 are fitted to the front surface of the body part 6. The front surface of the body part 6 is the surface that is placed towards the end 2 of the pipe 1 when using the device 5. When the pins 7 are on the front surface of the frame part 6, i.e. they are located facing forward from the frame part 6, the pins 7 are placed inside the end 2 of the tube 1 when using the device 5.

The pins 7 are arranged at such a distance from the center of the body part 6 that they rest on the inner surface of the pipe 1 and thus center the device 5 in relation to the pipe 1.

In this way, the chamfer 4 can be symmetrically formed on the outer edge of the end 2 of the pipe 1.

There must be at least two pins 7 for centering. If there are three pins 7, the device 5 can be centered even more reliably and the reliability is further improved if there are four pins 7. If desired, more than four pins 7 can be fitted to the front surface of the body part 6.

The body part 6 can be metal such as steel. The pins 7 can also be metal. The pins 7 can be fitted to the body part 6 by, for example, welding or riveting.

The pins 7 form the form parts directed forward from the body part, o, which center the device 5 in relation to the pipe 1. In the embodiments shown in the figures

In AN dos, the shaped parts are round pins 7. If desired, the shaped parts can also have 5 other shapes, such as angular or equipped with a narrow outer edge or

A with a grumpy form.

N 30 When the device 5 is used, the shaped parts can be adapted to remove

E ground member 3 from the end of pipe 1 2 especially from the inner surface of pipe 1. The shaped parts can be fitted to the body part in such a way that the distance of the outer edge of the shaped part from the center of the body part = 6 corresponds to the radius of the inner surface of the pipe 1 to be processed or is only slightly

N smaller. Thus, when using the device 5, the shaped part slides along the inner surface of the tube 1

S 35 or is at least so close to the inner surface of the pipe 1 that it removes the stubs 3 from the end 2 of the pipe 1.

The outer circumference of the body part 6 has chamfering means for chamfering the outer edge of the end 2 of the tube 1. In the embodiment of figures 2 and 3, the chamfering means comprise saw blade teeth 8 adapted to a slanted position forward from the body part 6. The saw blade teeth 8 have a slanted cutting surface which forms a bevel 4.

In Figures 2 and 3, the device 5 is attached from the body part 6 to an adapter 9 to be placed in the chuck of a hand-held drill. The adapter 9 can be, for example, such that it has the central bolt 10 of the adapter and the nut 11 of the adapter that fits around the central bolt 10. The adapter 9 can still have an adapter support pins 12.

The device 5 is attached to the adapter 9 in such a way that the central bolt 10 of the adapter is fitted through the central hole 13 in the middle of the body part 6 and the body part 6 is tightened to the adapter 9 with the adapter nut 11. The support pins 12 of the adapter are fitted through the side holes 14 in the body part 6 . In this way, the frame part 6 remains reliably non-rotating with respect to the adapter 9.

The central hole 13 and the side holes 14 in the body part 6 are shown in connection with the embodiment of FIG. 4. In the embodiments shown in the figures, the central hole 13 and the side holes 14 form the means for attaching the body part 6 to the adapter 9 to be placed in the chuck of the hand-held drill.

In the embodiment of Figure 4, a bevelled rim 15 is formed on the outer circumference of the round body part 6, fitted forward from the body part 6. The device 5 is thus formed in the shape of a plate. A pipe-working surface 16 is formed on the surface of the beveled circumference 15. The pipe-working surface 16 forms chamfering means for beveling the outer edge of the end 2 of the pipe 1. With the pipe working surface 16, the outer edge of the end 2 of the pipe 1 is therefore shaped so that a chamfer 4 is formed on it. o The pipe working surface 16 is formed in such a way that when it is rotated

AN and it is pressed against the end 2 of the pipe 1, then the pipe working surface 16 wears, 5 grinds and/or roughens the pipe wall so that a chamfer 4 is formed.

The opening surface 16 may have ridges, grooves and/or roughening, such as sandpaper

N 30 — corresponding surface.

E It is obvious to a professional in the field that as technology develops, the basic idea o of the invention can be implemented in many different ways. The invention and its embodiments are therefore not limited to the examples described above, but may vary in terms of protection

Within the requirements of N.

S 35

Claims (7)

Protection requirements 1. A device for chamfering the end of a pipe, characterized in that the device (5) comprises - a flat frame part (6), - means in the frame part for its attachment in an adapter (9) which is placed in the chuck of a hand-held drilling machine, - at least two form parts facing forward from the frame part (6), which can be adapted for placement on the inside of the pipe (1) to be chamfered and - chamfering means for chamfering the outer edge of the pipe (1) end (2) on the frame part (6) ) outer ring. 2. A device according to protection claim 1, characterized in that the chamfering means comprise saw blade teeth (8) facing forward from the frame part (6) which are fitted in an oblique position. 3. A device according to protection claim 1, characterized in that the chamfering means comprise a skew ring (15) facing forward from the frame part, in the surface of which a pipe processing surface (16) has been adapted, which has been adapted to the outer ring of the round frame part (6). 4. A device according to protection claim 3, characterized in that the pipe-working surface (16) comprises one or more of the following: protrusion, rafter and a roughing. 5. A device according to any preceding protection requirement, characterized by the drainage frame part (6) has at least three, preferably at least four form parts facing forward from the frame part (6) which are adaptable for placement on the inside of the pipe (1) which is to be chamfered. 6. A device according to any preceding protection requirement, characterized by the shaped parts being pins (7). O 7. A device according to any preceding protection requirement, characterized in that the mold parts are shaped so that when the device (5) is used, they are adapted to remove beard (3) from the end (2) of the pipe (1). x a O S N >”