CN214392613U - Cutting equipment - Google Patents

Abstract

The invention provides cutting equipment which comprises a dust suction cavity, a motor cavity and a cutting cavity, wherein a rotor penetrates through the dust suction cavity, the motor cavity and the cutting cavity; a driving motor is arranged in the motor cavity and connected with the rotor to drive the rotor to rotate; the rotor is provided with an impeller assembly, the impeller assembly is arranged in the dust collection cavity, and the cutting cavity comprises a cutting opening; the rotor rotates to drive the impeller assembly to form negative pressure in the dust suction cavity; the motor cavity with be equipped with the fixed plate between the dust absorption cavity, the casing in motor cavity the fixed plate with the casing in dust absorption cavity passes through a plurality of the connecting piece is connected. By arranging the fixing plate, the stability of the connection between the motor cavity and the dust suction cavity is enhanced, and the jitter of the equipment during operation is reduced; the noise is reduced, and the service life of the motor is prolonged.

Description

Cutting equipment

Technical Field

The invention relates to the technical field of cutting equipment, in particular to cutting equipment.

Background

Although the conventional electric saws can be classified into various types according to the size, the application and the like, the structural differences are different. The existing electric saw generally comprises a shell, a power device and a saw blade, wherein the power device generally adopts a motor and is arranged at the shell, and the power device is used for driving the saw blade to rotate so as to cut materials.

Among the prior art, for preventing that the saw bits that produce from splashing among the saw bit cutting process, can set up the saw bit cover in the saw bit outside usually, through setting up the saw bit cover, can block the saw bits better and splash to user's department and then realize the protection to the user. However, the saw blade cover in the prior art has the function of preventing sawdust from splashing, and only changes the direction of the sawdust splashing to protect a user; it still causes the sawdust to spread into the working environment, which is a severe working environment.

Disclosure of Invention

In order to overcome the technical defects, the invention aims to provide the cutting equipment which can reduce the integral shaking of the cutting equipment and prolong the service life of a motor.

A cutting device comprises a dust suction cavity, a motor cavity and a cutting cavity, wherein a rotor penetrates through the dust suction cavity, the motor cavity and the cutting cavity; a driving motor is arranged in the motor cavity and connected with the rotor to drive the rotor to rotate; the rotor is provided with an impeller assembly, and the impeller assembly is arranged in the dust collection cavity; the rotor rotates to drive the impeller assembly to form negative pressure in the dust suction cavity, and the cutting cavity is communicated with the dust suction cavity through a dust suction pipeline; the motor cavity with be equipped with the fixed plate between the dust absorption cavity, be equipped with a plurality of connecting piece on the fixed plate, the casing in motor cavity the fixed plate with the casing in dust absorption cavity passes through a plurality of the connecting piece is connected.

Preferably, the rotor is further provided with a blade, the cutting cavity comprises a cutting opening, one part of the blade is arranged in the cutting cavity, and the other part of the blade is exposed out of the cutting opening.

Preferably, the fixing plate is consistent with the radial cross sections of the motor cavity and the dust suction cavity in shape and size; the fixed plate comprises a middle opening area and a circular ring connecting area, the rotor is penetrated through the opening area, and the connecting area is provided with a plurality of connecting pieces.

Preferably, the connecting areas are circumferentially distributed with the connecting pieces, the number of the connecting pieces is 4, and the 4 connecting pieces are arranged at equal intervals.

Preferably, the dust suction duct is disposed along a surface of a housing of the cutting apparatus and penetrates the fixing plate.

Preferably, a first handle is arranged on a shell of the cutting cavity, and a second handle is arranged on a shell of the motor cavity; the first handle is arranged along the radial direction of the cutting cavity; the first handle includes a support plate disposed toward the cutting opening.

Preferably, the second handle is arranged along the radial direction of the motor cavity; the second handle comprises two holding pieces which are axially arranged, and the distance between the two holding pieces is larger than one fourth of the axial size of the motor cavity.

Preferably, the impeller assembly comprises a first impeller and a second impeller, and the rotor sequentially passes through the centers of the first impeller and the second impeller and is fixedly connected with the first impeller and the second impeller; the first impeller is arranged in the dust collection cavity, the second impeller is arranged in the motor cavity, and the first impeller and the second impeller are respectively arranged on two sides of the motor.

Preferably, the first impeller comprises first blades and the second impeller comprises second blades; the first blade is arc-shaped or spiral-shaped, and the second blade is linear, arc-shaped or spiral-shaped; when the rotor rotates, the first impeller sucks ambient air to circulate along the radial direction of the rotor, and the second blades are connected with the rotor, so that the contact area between the rotor and the air is enlarged.

Preferably, the rotor is further provided with carbon brushes, the carbon brushes are arranged between the motor and the second impeller, and the two carbon brushes are oppositely arranged on the rotor; the shell is also provided with a carbon brush hole, and the carbon brush is exposed out of the shell through the carbon brush hole; the dust collecting bag is communicated with the dust suction cavity and is detachably connected with the dust suction cavity.

After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:

1. the impeller assemblies are arranged in the dust suction cavity and the motor cavity, so that when equipment runs, the dynamic balance of the motor is influenced by the impeller assemblies on the two sides of the motor, the stability of connection between the motor cavity and the dust suction cavity is enhanced by arranging the fixing plate, and the jitter of the equipment during running is reduced; the noise is reduced, and the service life of the motor is prolonged;

2. the shapes and the sizes of the radial sections of the fixed plate, the motor cavity and the dust suction cavity are consistent, so that the force between the dust suction cavity and the motor cavity is completely transmitted through the fixed plate, and the connection between the motor cavity and the dust suction cavity is more stable through the reinforcement of the fixed plate;

3. the dust suction pipeline penetrates through the fixing plate, so that the vibration of the dust suction pipeline is reduced;

4. when the cutting machine is used for cutting objects with large resistance, such as the ground or a wall, large reverse thrust is often generated, force is not easily applied by a single hand, and by arranging the first handle, pressure is more easily applied to the ground or the wall by virtue of the first handle during cutting, so that smooth cutting work is facilitated.

Drawings

FIG. 1 is a first exploded view of a cutting apparatus provided in accordance with the present invention;

FIG. 2 is a second exploded view of the cutting apparatus provided by the present invention;

FIG. 3 is a third exploded view of the cutting apparatus provided in the present invention;

FIG. 4 is a schematic view of the overall structure of the cutting apparatus provided in the present invention

FIG. 5 is a schematic structural diagram of a motor cavity of the cutting apparatus provided in the present invention;

FIG. 6 is an exploded view of a motor cavity of a cutting apparatus provided in accordance with the present invention;

FIG. 7 is an exploded view of a dust extraction chamber of the cutting apparatus provided by the present invention;

FIG. 8 is a schematic structural view of a cutting chamber of the cutting apparatus provided in the present invention;

FIG. 9 is a schematic structural diagram of a cutting chamber cover plate of the cutting apparatus provided in the present invention;

fig. 10 is a schematic structural view of a fixing plate of the cutting apparatus provided in the present invention;

fig. 11 is a schematic structural view of a sealing plate of a dust suction chamber of the cutting apparatus according to the present invention.

Reference numerals: 1-cutting chamber, 2-dust suction pipe, 3-first impeller, 4-fixing plate, 5-first handle, 6-second handle, 7-dust suction port, 8-cutting depth adjusting module, 9-depth adjusting switch, 10-cutting angle adjusting module, 11-dust suction chamber cover plate, 12-dust suction chamber bottom plate, 13-dust suction chamber sealing plate, 14-cutting chamber cover plate, 15-dust suction chamber, 16-motor, 17-heat dissipation hole, 18-carbon brush, 19-carbon brush holder, 20-carbon brush hole, 21-mounting bottom plate, 22-first bearing, 23-second impeller, 24-angle adjusting switch, 25-motor chamber, 26-fixing block, 27-blade fixing block, 28-snap spring, 29-fixing bolt, 30-gear set.

Detailed Description

The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.

Referring to fig. 1-11, a cutting apparatus includes a dust chamber 15, a motor chamber 25, and a cutting chamber 1, and a rotor is disposed between the dust chamber 15, the motor chamber 25, and the cutting chamber 1. Be equipped with driving motor 16 in the motor chamber 25, driving motor 16 is connected in order to drive the rotor and rotate with the rotor, is equipped with impeller subassembly and blade on the rotor, and in dust absorption chamber 15 was located to the impeller subassembly, cutting chamber 1 included the cutting edge, and cutting chamber 1 was arranged in to blade partly locating, and another part exposes outside the cutting edge for cut the object.

The rotor rotates to drive the blade to rotate so as to cut and drive the impeller assembly to rotate, so that a strand of wind power is formed in the cavity, the pointing end of the wind power in the cavity is negative pressure, and the dust collection effect is achieved in the cutting equipment. The cutting cavity 1 is communicated with the dust suction cavity 15 through the dust suction pipeline 2 and is used for sucking cutting chips in the cutting cavity, the cutting chips enter the dust suction pipe from the dust suction port 7 of the cutting cavity 1 and then enter the dust suction cavity 15, and then the cutting chips leave the dust suction cavity 15 through the dust outlet and are discharged. When the blade cuts an object, the generated dust and flying chips are absorbed by the impeller assembly, so that the harm caused by the fact that the dust and flying chips are absorbed into the body II by a user is avoided, and the cleanness of the working environment of the cutting equipment is also ensured. The blade is provided with sawteeth, so that the cutting efficiency is improved.

Be equipped with fixed plate 4 between motor chamber 25 and the dust absorption chamber, be equipped with a plurality of connecting piece on fixed plate 4, the casing in motor chamber 25, fixed plate 4 and the dust absorption chamber is connected through a plurality of connecting piece for power transmission between dust absorption chamber 15 and the motor chamber 25 passes through fixed plate 4, and the warp the enhancement of fixed plate 4 makes motor chamber 25 with connection between the dust absorption chamber is more stable. The fixing plate 4 mainly contacts with the first bearing 22 in the motor cavity 25, and the motor 16 can be protected by stabilizing and protecting the bearing.

Preferably, the fixed plate 4 is consistent with the radial cross-section of the motor cavity 25 and the dust suction cavity in shape and size, the fixed plate 4 comprises a middle perforated area and a circular ring connecting area, the rotor is penetrated in the perforated area, and the connecting area is provided with a plurality of connecting pieces, so that the force transmission between the dust suction cavity 15 and the motor cavity 25 is completely strengthened through the fixed plate 4, and the vibration and the noise during the operation of the equipment are further reduced.

Preferably, the connecting region is circumferentially distributed with 4 connecting pieces, and the number of the connecting pieces is equal to that of the 4 connecting pieces, so that the force transmission between the dust suction cavity 15 and the motor cavity 25 is uniform and stable.

Preferably, the dust suction duct 2 is disposed along a surface of the housing of the cutting apparatus and penetrates the fixing plate 4, so that the dust suction duct 2 is also fixed by the fixing plate 4 to prevent large shaking and noise of the dust suction duct 2.

Preferably, the housing of the cutting chamber 1 is provided with a first handle 5, so that when cutting, pressure can be more easily applied to the ground or a wall by the first handle 5, which is beneficial to smooth cutting. The second handle 6 is arranged on the shell of the motor cavity 25, the second handle 6 is arranged along the radial direction of the motor cavity 25, and the second handle 6 is a main force application handle for being held by hand and used for being held by an operator. The first in command 5 is along the radial setting of cutting chamber 1, and the first in command 5 includes the backup pad, and the backup pad sets up towards the cutting cut, when the cutting, can directly press the backup pad in order to realize the application of force to the first in command 5, and is more convenient and humanized.

In this embodiment, the second handle 6 comprises only one grip. However, in other embodiments, the second handle 6 may further include two grip members axially arranged, a left grip portion and a right grip portion are formed on the motor cavity 25, a distance between the two grip members is greater than one fourth of an axial dimension of the motor cavity 25, and the force application range is wide, so that the position and the force application direction can be conveniently switched.

Preferably, the impeller assembly includes a first impeller 3 and a second impeller 23, and the rotor sequentially passes through the centers of the first impeller 3 and the second impeller 23 and is fixedly connected with the first impeller 3 and the second impeller 23. First impeller 3 locates in dust absorption chamber 15, and second impeller 23 locates in motor chamber 25, and first impeller 3 locates the both sides of motor 16 respectively with second impeller 23, and one side is used for forming the effect that the negative pressure realized the dust absorption, and the opposite side is used for accelerating motor 16's heat dissipation, extension motor 16's life.

Further, the casing of the motor cavity 25 is also provided with a heat dissipation hole 17, so that heat dissipation is further realized.

The dust collection cavity 15 comprises a dust collection cavity bottom plate 12 and a dust collection cavity cover plate 11, the first impeller 3 is arranged between the dust collection cavity bottom plate 12 and the dust collection cavity cover plate 11, and the fixing block is connected with the dust collection cavity bottom plate 12. And a dust suction cavity sealing plate 13 is further arranged at one end of the dust suction cavity 15, and a cutting cavity cover plate 14 is arranged at one end of the cutting cavity 1 and used for improving the integrity of the equipment. The cutting apparatus further comprises a mounting base plate 21 for supporting the cutting chamber 1 and the motor chamber 25.

Preferably, the first impeller 3 includes a first blade and a first disk set, the first blade is arc-shaped or spiral-shaped, a line connecting a tangent line of the first blade and a center of the first disk set is a blade tangent line, a line connecting a distal end of the first blade and the center of the first disk set is a reference line, and an included angle α between the blade tangent line and the reference line is: 5 DEG ≦ α ≦ 60 deg. In other embodiments, the first blade may also be helical, here with the aim of creating the wind at the first impeller 3, without limiting the shape of the blade.

The second impeller 23 includes a second blade and a second disk group, and the second blade is linear, circular arc or spiral. When the second vane is linear, the second vane has a radial length along the second disk set of 1/2 the radius of the second disk set. In other embodiments, the second blade may also be circular arc-shaped or spiral-shaped, and here, the purpose of increasing the heat dissipation area of the rotor is also taken, the shape of the second blade is not limited, and when the circular arc-shaped or spiral-shaped blade can achieve better heat dissipation effect, the circular arc-shaped or spiral-shaped blade can also be used. In other embodiments, the radial length of the second blade along the second pulley set may also be set to other values to meet the requirement of the heat dissipation area, which is not limited herein.

Preferably, the rotor is further provided with carbon brushes 18, the carbon brushes 18 are arranged between the motor 16 and the second impeller 23 through a carbon brush base 19, and the two carbon brushes 18 are oppositely arranged on the rotor; the shell is also provided with carbon brush holes 20, and the carbon brushes 18 are exposed out of the shell through the carbon brush holes 20. The dust collection device further comprises a dust collection bag, the dust collection bag is communicated with the dust collection port 7 in the dust collection cavity 15, dust and flying chips absorbed by the impeller directly enter the dust collection bag, the dust collection bag is detachably connected with the dust collection cavity 15, and a user can detach the dust collection bag at any time to clean the dust collection bag.

Further, a cutting depth adjusting module 8 and a cutting angle adjusting module 10 are further arranged on the shell of the cutting cavity 1, the cutting depth adjusting module and the cutting angle adjusting module respectively comprise a depth adjusting module 9 and an angle adjusting switch 24, and the cutting depth and the cutting angle of the blade can be adjusted through the cutting depth adjusting module 8 and the cutting angle adjusting module 10.

A gear set 30 is arranged between the rotor and the blade, the gear set 30 comprises a driving wheel and a driven wheel which are meshed with each other, the driving wheel is connected with the rotor, and the driven wheel is connected with the blade through a force transmission shaft. The rotor is provided with a sliding key matched with the driving wheel and is fixedly connected with the driving wheel through threads. The motor 16 drives the rotor to rotate, the rotor drives the driving wheel to rotate, force on the driving wheel is transmitted to the driven wheel through meshing, and the driven wheel continuously transmits the force to the blade through the force transmission shaft, so that the blade rapidly rotates to cut an object.

The blade is fixed through the blade fixing block 27 and is clamped and fixed through the two fixing blocks 26, so that cutting errors caused by inclination of the blade are avoided, the two fixing blocks 26 are thin blocks, and the two fixing blocks 26 are fixed through the fixing bolts 29.

Specifically, in this embodiment, the driving wheel and the driven wheel adopt an external meshing engagement mode, and the gear radius of the driving wheel is smaller than that of the driven wheel, so that the force transmission coefficient is larger. In other embodiments, the driving wheel and the driven wheel are meshed in an inner meshing mode, or the radius ratio between the driving wheel and the driven wheel is adjusted to obtain the optimal transmission ratio.

Further, a second bearing is arranged between the gear set 30 and the motor 16 and between the impeller and the motor 16, and the bearing is arranged through a clamp spring 28. The bearings provide support and protection for the rotor as the motor 16 drives the rotor to operate at high speeds.

It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.

Claims (10)

1. A cutting device is characterized by comprising a dust suction cavity, a motor cavity and a cutting cavity, wherein a rotor penetrates through the dust suction cavity, the motor cavity and the cutting cavity; a driving motor is arranged in the motor cavity and connected with the rotor to drive the rotor to rotate;

the rotor is provided with an impeller assembly, and the impeller assembly is arranged in the dust collection cavity;

the rotor rotates to drive the impeller assembly to form negative pressure in the dust suction cavity, and the cutting cavity is communicated with the dust suction cavity through a dust suction pipeline;

the motor cavity with be equipped with the fixed plate between the dust absorption cavity, be equipped with a plurality of connecting piece on the fixed plate, the casing in motor cavity the fixed plate with the casing in dust absorption cavity passes through a plurality of the connecting piece is connected.

2. The cutting apparatus of claim 1, wherein the rotor further comprises a blade, the cutting cavity comprises a cutting opening, and the blade is partially disposed in the cutting cavity and partially exposed outside the cutting opening.

3. The cutting apparatus of claim 1, wherein the fixing plate is in conformity with the shape and size of the radial cross section of the motor cavity and the dust suction cavity;

the fixed plate comprises a middle opening area and a circular ring connecting area, the rotor is penetrated through the opening area, and the connecting area is provided with a plurality of connecting pieces.

4. A cutting apparatus as claimed in claim 3, wherein said connecting region is circumferentially interspersed with said connecting members, said connecting members being 4 in number, 4 of said connecting members being disposed equidistant from one another.

5. The cutting apparatus of claim 1, wherein the dust suction duct is disposed along a surface of a housing of the cutting apparatus and passes through the fixing plate.

6. The cutting apparatus of claim 2, wherein a first handle is provided on the housing of the cutting chamber and a second handle is provided on the housing of the motor chamber;

the first handle is arranged along the radial direction of the cutting cavity; the first handle includes a support plate disposed toward the cutting opening.

7. The cutting apparatus of claim 6, wherein the second handle is disposed in a radial direction of the motor cavity;

the second handle comprises two holding pieces which are axially arranged, and the distance between the two holding pieces is larger than one fourth of the axial size of the motor cavity.

8. The cutting apparatus of claim 1, wherein the impeller assembly comprises a first impeller and a second impeller, and the rotor passes through centers of the first impeller and the second impeller in sequence and is fixedly connected with the first impeller and the second impeller;

the first impeller is arranged in the dust collection cavity, the second impeller is arranged in the motor cavity, and the first impeller and the second impeller are respectively arranged on two sides of the motor.

9. The cutting apparatus of claim 8, wherein the first impeller comprises a first blade and the second impeller comprises a second blade;

the first blade is arc-shaped or spiral-shaped, and the second blade is linear, arc-shaped or spiral-shaped;

when the rotor rotates, the first impeller sucks ambient air to circulate along the radial direction of the rotor, and the second blades are connected with the rotor, so that the contact area between the rotor and the air is enlarged.

10. The cutting apparatus according to claim 8, wherein the rotor further comprises carbon brushes disposed between the motor and the second impeller, the carbon brushes being disposed opposite to each other on the rotor; the shell is also provided with a carbon brush hole, and the carbon brush is exposed out of the shell through the carbon brush hole;

the dust collecting bag is communicated with the dust suction cavity and is detachably connected with the dust suction cavity.

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