Tool for removing part of plastic anchors from building structures

Abstract

The invention relates to a tool for removing part of plastic dowels, preferably in building structures.

Description

[0001] After the end of its use, a plastic dowel often represents a visual impairment of the surface.

[0002] Various techniques are then used to try to remove the dowel and visually adapt the drill hole to the surrounding surface.

[0003] However, removal can be difficult and often damages the area around the borehole. After all, one of the main functions of a dowel is to provide secure anchoring.

[0004] The invention addresses the problem of simplifying the optical removal of drill holes using plastic dowels.

[0005] Technically, in most cases it is not necessary to remove the entire dowel.

[0006] To achieve an optical alignment of the borehole, it is sufficient to remove the rear part of the dowel shaft, which usually has no anchoring function.

[0007] The hole can then be filled with the remaining dowel and plastered over, or adapted to the substrate in another suitable way.

[0008] The problem is therefore solved by cutting off and pulling out the rear part of the dowel shaft.

[0009] The advantages achieved with the invention are that removing the dowel end with this tool is very easy.

[0010] The cutting and pulling out is carried out using the tool described in claim 1.

[0011] It consists of a shaft ① as a clamping mandrel with an integrally formed cutting edge ③ a centering ring ② sitting above it and a Stop disc ④ with non-slip surface ⑤.

[0012] The stop disc is slid over the tool shank with its non-slip surface facing the cutting edge, and then the tool is clamped into a cordless screwdriver (drill). The stop disc must be able to rotate freely.

[0013] The tool is then inserted into the plastic dowel as far as possible, and the cordless screwdriver is preferably operated first at low speed (screwing in) and then at high speed (cutting) for a few seconds.

[0014] The tool screws into the dowel shaft, is aligned by the centering ring, and cuts off the rear end of the dowel shaft.

[0015] The stop disc with its non-slip surface has the task of... 1. To protect sensitive surfaces from damage caused by the rotating drill chuck, 2. to prevent the drill chuck from being pulled into the dowel shaft.

[0016] When the cordless screwdriver is removed, the severed part of the dowel shaft is pulled out along with the tool. The rest of the dowel remains in the drill hole.

Claims

[1] Cutting tool with an elongated shaft which transitions at the lower end into a cutting edge angled at approximately 90° and which has a centering ring just above the angled cutting edge. [2] Cutting tool according to claim 1, characterized by that the shaft is round. [3] Cutting tool according to claim 1, characterized by that the transition from shank to cutting edge is curved. [4] Cutting tool according to claim 1, characterized by , that the cutting edge is at an angle α to the shank, at which it screws itself into the dowel shank during a rotational movement. [5] Cutting edge according to claim 4, characterized by , that the parting angle α can be adapted for right- or left-hand rotating machines. [6] Cutting tool according to claim 1, characterized by that the cutting edge has a length that matches the outer diameter of the dowel. [7] Cutting tool according to claim 1, characterized bythat the centering ring has a diameter that matches the inner diameter of the dowel shaft. [8] Centering ring according to claim 7, characterized by that it has a conical shape, tapering towards the cutting edge. [9] Cutting tool according to claim 1, characterized by , that a freely rotating stop disc is pushed onto the shaft. [10] Stop disc according to claim 9, characterized by that a non-slip, protective surface is present.

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