CN107855593B

CN107855593B - Hand-held dust-collecting cutting machine

Info

Publication number: CN107855593B
Application number: CN201710986220.XA
Authority: CN
Inventors: 向广宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2023-04-11
Anticipated expiration: 2037-10-20
Also published as: CN107855593A

Abstract

The invention discloses a handheld dust collecting cutting machine which comprises a shell, a handle arranged outside the shell, a motor arranged inside the shell and a dust collecting shell arranged on one side of the shell and covering a saw blade, wherein the dust collecting shell comprises a dust preventing shell covering the upper part of the saw blade, a dust collecting outlet for discharging chips generated by cutting the saw blade and a guide shell for communicating the dust preventing shell with the dust collecting outlet, the dust collecting outlet deviates towards the handle, and the guide shell is provided with a guide surface for spirally guiding the chips in the dust preventing shell to the dust collecting outlet. The cutting machine has an intelligent dust collection function, dust which is cut can be effectively discharged and collected without an external dust collector, and if the external dust collector is arranged, the dust collection effect can reach more than 95%.

Description

Hand-held dust-collecting cutting machine

Technical Field

The invention relates to the field of electric tools, in particular to a handheld dust collecting cutting machine for decoration.

Background

With the development of modern machining industry, the requirements on the cutting quality, the cutting precision and the environment protection and health of workers are continuously improved, and the requirements on improving the production efficiency, reducing the production cost and having a highly intelligent automatic cutting function are also improved. The handheld dust collecting cutting machine is also called a stone cutting machine, an electric circular saw and a marble machine, can be used for cutting materials such as stone materials, ceramic tiles and wood, and can also be used for wall slotting during water and electricity installation.

Cutting machine of the prior art, comprising: a circular saw blade; the shell is provided with a fixed shield, the fixed shield comprises an accommodating groove and a dust collecting pipe communicated with the accommodating groove, and at least part of the circular saw blade is accommodated in the accommodating groove; the motor is accommodated in the shell and is provided with a motor shaft axis, and the motor is used for driving the circular saw blade to rotate around the rotating axis.

When the cutting machine is used for cutting, the rotation of the circular saw blade causes chips to be lifted and scattered. In contrast, the upper portion of the circular saw blade is covered with the housing groove of the fixed guard, so that scattering of chips can be prevented, and a dust collecting device for collecting the scattered chips is connected to the fixed guard. Direct and accepting groove top surface collision when the smear metal that the circular saw blade cutting produced scatters among the prior art, only partial smear metal passes through the dust leg and discharges, and another part dust is rebound when the collision is brought out by the circular saw blade again, because do not have transition structure, can not prevent the smear metal well and scatter, reaches the collection effect of ideal to the dust leg is in on the surface of revolution of circular saw blade, is unfavorable for overall structure operation flexibility, stability.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provided is a hand-held dust collecting cutter which prevents scattering of chips and has a stable structure.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a handheld dust collection cutting machine comprises a shell, a handle arranged outside the shell, a motor arranged inside the shell and a dust collection shell arranged on the left side of the shell and covering a saw blade, wherein the dust collection shell comprises a dust prevention shell covering the upper part of the saw blade, a dust collection outlet for discharging chips generated by cutting the saw blade and a guide shell communicated with the dust prevention shell and the dust collection outlet, the dust collection outlet deviates to the handle, and the guide shell is provided with a guide surface for guiding the chips in the dust prevention shell to the dust collection outlet in a spiral mode.

Further, the axis of the dust collection outlet is located between the plane of revolution of the saw blade and the handle and parallel to the plane of revolution of the saw blade.

Furthermore, the guide surface is an oblique arc surface which gradually and smoothly transits to the dust collection outlet from the end surface of the dust-proof shell far away from the handle in an arc shape.

The scheme is the expression of the structure that the saw blade is arranged on the left side of the cutting machine, and the principle is also applicable to the structure that the saw blade is arranged on the right side of the cutting machine.

The beneficial effects of the invention are:

the cutting machine has an intelligent dust collection function, can effectively discharge and collect the cut dust without an external dust collector, and has a dust collection effect of over 95 percent. The design is that the dust collection outlet is deviated to the handle, the dust collection outlet is positioned between the saw blade and the handle, the gravity center of the cutting machine is close to the handle at the moment, and the stability and the flexibility of the structure of the whole cutting machine are improved. The guiding surface (transition structure) on the inner side of the guiding shell effectively guides the cutting chips generated by the cutting of the saw blade to the dust collecting outlet and discharges the cutting chips, so that the cutting chips are better prevented from flying apart, and the ideal dust collecting effect is achieved.

Drawings

FIG. 1 is a schematic front view of the cutting machine of the present invention;

FIG. 2 is a schematic right side view of the cutting machine of the present invention;

FIG. 3 is a schematic top view of the cutting machine of the present invention;

FIG. 4 is a perspective view of the present invention;

FIG. 5 is a schematic cross-sectional view of the left portion of the cutting machine of the present invention;

FIG. 6 is a schematic view, partly in section, of the invention in the right direction;

fig. 7 is a perspective view of fig. 6.

In the figure: 1-shell, 2-saw blade, 3-handle, 4-dust collecting shell, 401-dustproof shell, 402-guide shell, 4021-guide surface, 403-dust collecting outlet and 5-motor.

Detailed Description

In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 7, a cutting machine includes a housing 1, a saw blade 2, a handle 3, a dust collection case 4, and a motor 5, wherein the motor 5 is fixedly installed inside the housing 1, a power output end thereof is connected with the saw blade 2 to drive the saw blade 2 to rotate, the handle 3 is installed outside the housing 1, the handle 3 and the housing 1 are integrally formed, and the dust collection case 4 is installed at a left end of the housing 1.

As shown in fig. 5, 6 and 7, the dust collection case 4 has a pump case structure, and includes a dust proof case 401, a guide case 402 and a dust collection outlet 403, the guide case 402 communicates the dust proof case 401 and the dust collection outlet 403, the dust collection outlet 403 is offset toward the handle 3 and is located between the rotation surface of the saw blade 2 and the handle 3, the upper portion of the saw blade 2 is accommodated in the dust proof case 401, chips generated by cutting the saw blade 2 enter the dust proof case 401, are spirally centrifuged by the guide surface 4021 inside the guide case 402, and finally enter the dust collection outlet 403 and are discharged. The guiding surface 4021 may be an oblique arc surface, which gradually and smoothly transitions from the left end surface of the dust-proof housing 401 to the dust collection outlet 403 in an arc shape.

The above embodiments are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the above embodiments should be included in the scope of the present invention.

Claims

1. The utility model provides a handheld collection dirt cutting machine, includes casing (1), installs at the outside handle (3) of casing (1), installs motor (5) inside casing (1) and installs collection dirt shell (4) that cover saw bit (2) in casing (1) one side, its characterized in that: the dust collection shell (4) comprises a dust prevention shell (401) covering the upper part of the saw blade (2), a dust collection outlet (403) discharging chips generated by cutting the saw blade (2), and a guide shell (402) communicating the dust prevention shell (401) with the dust collection outlet (403), wherein the dust collection outlet (403) is deviated to the handle (3), and the guide shell (402) is provided with a guide surface (4021) spirally and centrifugally guiding the chips in the dust prevention shell (401) to the dust collection outlet (403);

the axis of the dust collection outlet (403) is positioned between the revolution surface of the saw blade (2) and the handle (3) and is parallel to the revolution surface of the saw blade (2);

the guide surface (4021) is an inclined arc surface, and the inclined arc surface is gradually and smoothly transited to the dust collection outlet (403) from the end surface of the dust-proof shell (401) far away from the handle (3) in an arc shape.