CN201815742U - Three-knife-edge cutting knife - Google Patents

Abstract

This utility model discloses a three-blade cutter, comprising a support, a disc cutter, and a handle. A disc cutter is mounted on the front end of the support via a pin. A nut sleeve is located at the rear end of the support, and a screw is installed inside the nut sleeve. The rear end of the screw is the handle, and the front end of the screw is connected to a tool holder slidably mounted on a slide rail of the support. Two disc cutters are mounted on the tool holder via pins. It features a simple structure, small size, and light weight, allowing for use in confined spaces. Three disc cutters work simultaneously on a radial cutting plane, cutting metal pipes with a rotation angle not exceeding 180°. The processed pipe ends are burr-free, deformation-free, and shrinkage-free.

Description

Three-edged knife

technical field

The utility model relates to a pipe material cutting tool, in particular to a three-edged cutting knife for cutting pipe materials.

Background technique

At present, the hob cutting metal pipe has the advantages of high efficiency, no debris, smooth incision, etc., and is widely used in the production, processing and use of metal pipes. However, the hob cutting tools or equipment in the prior art generally have disadvantages such as complex structure, large volume, and inconvenient use. For example: in the up-drawing casting method of copper pipes, the up-drawing copper pipes are drawn out continuously, and when drawn out to the specified length of the billet, they need to be cut off for the next step of processing. Due to the upward casting method, each furnace needs to lead out multiple copper tubes at the same time. After the copper tubes are drawn out, the gaps between the copper tubes arranged side by side are very small. It is inconvenient to use a large cutting machine and it is not possible to use ordinary cutting tools for 360° rotary cutting.

Contents of the invention

The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a three-edged cutter with simple structure and suitable for cutting pipes in narrow spaces.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions: a three-edged cutter, which includes a bracket, a disc cutter, and a handle, and is characterized in that a circular cutter is installed on the front end of the bracket through a pin shaft. Disc cutting knife, there is a nut sleeve at the rear end of the bracket, a screw rod is installed on the nut sleeve, the rear end of the screw rod is a handle, and the front end of the screw rod is connected to a knife rest that is slidably installed on the slideway of the bracket, and the knife rest passes Pin shaft installs two disc cutters.

The pin shaft of the disc cutter installed is installed on the support and the knife rest through an axle sleeve or a bearing.

Compared with the prior art, the utility model has the following advantages: it is mainly composed of a bracket, a knife holder, three disc cutters, a screw rod and a handle, and has a simple structure, small volume and light weight, and can be used in a narrow space. On a radial cutting plane, three disc cutting knives work simultaneously, and the rotation angle does not exceed 180° to cut the metal pipe, which improves the cutting speed. The knife rest is slidably installed on the slideway on one side of the support and is connected with the top of the screw rod, which ensures that the blades of the three disc cutters are on a plane. The pipe fittings cut by the utility model have no burr, no deformation, and no shrinkage at the mouth of the pipe, thereby improving the processing efficiency of the entire pipe fitting.

Description of drawings

Fig. 1 is the schematic diagram of three-dimensional structure of three-edged cutter of the present invention and clamped copper tube;

Fig. 2 is a three-dimensional structure schematic diagram of the utility model three-edged cutter;

Fig. 3 is a schematic view of the side structure of the three-edged cutter and the clamped copper pipe of the present invention;

In the figure: 1. Handle, 2. Screw, 3. Nut sleeve, 4. Bracket, 5. Knife holder, 6. Slide, 7. Disc cutter, 8. Disc cutter, 9. Disc cutter Knife, 10. Brass pipe.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, a kind of three-edged cutter comprises bracket 4, disc cutter 7, 8, 9 and handle 1; Disc cutter 9 has nut sleeve 3 at the rear end of support 4, screw rod 2 is installed on nut sleeve 3, the rear end of screw rod 2 is handle 1, and the front end of screw rod 2 connects one end and is installed on the support slideway slidingly A knife rest 5 on the 6, two disc cutting knives 7,8 are installed by axle sleeve and bearing pin on the knife rest 5. When in use, at first, put the copper tube 10 between the disc cutters 7, 8, 9 and fix it. Put it in, and rotate the adjusting screw rod 2 to make the disc cutters 7, 8, 9 contact the copper pipe 10 at the same time to achieve the fixing purpose. Then, after the copper pipe 10 is fixed, hold the handle 1 to make the disc cutters 7, 8, 9 rotate and cut along the diameter of the copper pipe.

Claims (2)

1. sword cutter, it comprises support (4), wheel cutter (7,8,9), handle (1), it is characterized in that: the front end at support (4) is installed a wheel cutter (9) by bearing pin, in the rear end of support (4) ut socket (3) is arranged, go up installation screw rod (2) at ut socket (3), the rear end of screw rod (2) is handle (1), the front end of screw rod (2) connects an end and is slidably mounted on a knife rest (5) on the support slideway (6), and knife rest (5) is gone up by bearing pin two wheel cutters (7,8) are installed.

2. according to the described three sword cutteves of claim 1, it is characterized in that: the bearing pin of described installation wheel cutter (7,8,9) is to be installed on support (4) and the knife rest (5) by axle sleeve or bearing.

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