CN211103097U - Sanding machine - Google Patents

Abstract

The utility model relates to a sanding machine, comprising a casing, a dust cover and a dust suction box which are respectively fixedly connected to the casing, and a motor mounted on the casing. The wind wheel connected by the motor, and the dust box is provided with an air inlet and an air outlet respectively located on both sides of the wind wheel, and the dust cover is provided with a grinding wheel connected with the motor. The dust cover is provided with a dust collecting hole communicating with the air inlet. Since the grinding wheel and the wind wheel are connected to the motor at the same time, the same motor is used to drive the grinding wheel and the wind wheel to rotate at the same time, which not only effectively reduces the weight of the sanding machine, but also has relatively low energy consumption. At the same time, the handle rod is set as a hollow handle rod, which is convenient to use the inner space of the handle rod to collect dust or discharge dust without setting up an independent dust box, further reducing the weight of the sander.

Description

a sanding machine

technical field

The utility model relates to a grinding tool, in particular to a sanding machine.

Background technique

In the process of building construction or decoration, in order to ensure that the wall has a good flatness, it is usually necessary to polish it. The traditional grinding operation is usually completed with sandpaper. With the continuous development of grinding tools, most construction teams are currently Use a sander to complete the sanding of the walls.

When a grinder is used for grinding operations, a large amount of dust will inevitably be generated, so the existing grinder is usually equipped with a dust suction device. In essence, it is a grinder with a dust suction device; however, this type of grinder needs to install both the motor for driving the grinding wheel and the fan for dust suction on the casing of the grinder, resulting in the weight of the casing. Relatively large, it is not conducive to grinding operations, and the energy consumption is relatively high.

In view of this, the applicant has conducted in-depth research on the structure of the sanding machine, and this case came into being.

Utility model content

The purpose of the utility model is to provide a sanding machine with relatively small weight and relatively low energy consumption.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A sanding machine includes a casing, a dust cover and a dust suction box that are respectively fixedly connected to the casing, and a motor mounted on the casing, wherein the dust suction box is provided with a connection with the motor. A wind wheel connected by transmission, and the dust box is provided with an air inlet and an air outlet respectively located on both sides of the wind wheel, and the dust cover is provided with a grinding wheel that is connected to the motor. The dust cover is provided with a dust collecting hole communicating with the air inlet.

As an improvement of the present utility model, the output shaft of the motor is provided with a first bevel gear or a bevel tooth segment, the wind wheel is fixedly connected with a transmission shaft arranged coaxially with the wind wheel, and the transmission shaft A second bevel gear meshing with the first bevel gear or the bevel tooth segment is arranged on the top, and the grinding wheel is in driving connection with the transmission shaft.

As an improvement of the present invention, an output shaft is fixedly connected to the grinding wheel, an output gear is arranged on the output shaft, and a transmission gear or a gear portion meshing with the output gear is arranged on the transmission shaft.

As an improvement of the present utility model, the output gear is a helical gear.

As an improvement of the present invention, a support disc is fixedly connected to the output shaft, and the grinding wheel is indirectly fixedly connected to the output shaft by being fixedly connected to the support disc.

As an improvement of the present invention, it also includes a handle rod rotatably connected to the casing, the handle rod is a hollow handle rod, and the inner cavity of the handle rod is communicated with the air outlet through a hose.

As an improvement of the present utility model, the handle rod is a telescopic handle.

As an improvement of the present utility model, the handle bar jacket is provided with a holding sleeve.

Adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

1. Since the grinding wheel and the wind wheel are connected to the motor at the same time, the same motor is used to drive the grinding wheel and the wind wheel to rotate at the same time, which not only effectively reduces the weight of the sander, but also has relatively low energy consumption.

2. The handle rod is set as a hollow handle rod, which is convenient to use the inner space of the handle rod to collect dust or discharge dust without setting up an independent dust box, which further reduces the weight of the sander.

Description of drawings

Fig. 1 is the structural representation of the sanding machine of the present utility model;

2 is a schematic structural diagram of the sanding machine of the present invention after omitting the casing, the dust collecting box and part of the handle rod

The corresponding symbols in the figure are as follows:

10-chassis; 20-dust cover;

21-grinding wheel; 22-output shaft;

23-output gear; 24-support plate;

30-dust box; 31-wind wheel;

32-drive shaft; 33-second bevel gear;

34-gear part; 40-motor;

50-handle rod; 51-hose;

52 - Grip sleeve.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in FIGS. 1-2 , the sanding machine provided in this embodiment includes a casing 10 , a dust cover 20 and a dust suction box 30 respectively fixedly connected to the casing 10 , and a motor mounted on the casing 10 . 40, and also includes a handle bar 50 rotatably connected to the casing 10, wherein the dust collector 30 is provided with a wind wheel 31 that is connected to the motor 40, and the dust collector 30 is provided with two wind wheels 31 respectively located in the dust box 30. The air inlet and air outlet on the side, the dust cover 20 is provided with a grinding wheel 21 that is connected to the motor 40, so that the motor 40 can drive the wind wheel 31 and the grinding wheel 21 to rotate at the same time, effectively reducing the weight of the sanding machine and facilitating long-term use hand-held operation. It should be noted that, as with the conventional sanding machine, the grinding surface of the grinding wheel 21 needs to expose the dust cover 20, so that the grinding operation can be performed. In addition, the inner diameter of the dust cover 20 is larger than the outer diameter of the grinding wheel 21, and the dust cover 20 and the grinding wheel 21 are arranged coaxially.

The specific transmission connection structure between the motor 40 and the wind wheel 31 and the grinding wheel 21 can be a conventional structure, for example, a dual output shaft motor is used. In this embodiment, the output shaft of the motor 40 is provided with a first bevel gear or a bevel gear segment (that is, the output shaft of the motor 40 can be set as a gear shaft with bevel gear segments), and the wind wheel 31 is fixedly connected with the wind turbine. The transmission shaft 32 of the wheel 31 is arranged coaxially, and the transmission shaft 32 is provided with a second bevel gear 33 meshing with the first bevel gear or bevel gear segment, so as to realize the transmission connection between the motor 40 and the wind wheel 31; the grinding wheel 21 and the The transmission shaft 32 is in a transmission connection. Specifically, the grinding wheel 21 is directly or indirectly fixedly connected with the output shaft 22, the output shaft 22 is provided with an output gear 23, and the transmission shaft 32 is provided with a transmission gear or gear portion 34 that meshes with the output gear 23. (That is, the transmission shaft 32 can be set as a gear shaft with the gear part 34), so as to realize the transmission connection between the grinding wheel 21 and the motor 40, which helps to avoid the axial play or radial runout generated by the grinding wheel 21 from affecting the wind. The running stability of the wheel 31 .

Preferably, the output gear 23 is a helical gear, then the transmission gear or the teeth on the gear part 33 that cooperates with it must also be helical teeth. In addition, the output shaft 22 is detachably and fixedly connected with a support plate 24 through bolts, the support plate 24 and the dust cover 20 are not in contact with each other, and the grinding wheel 21 is indirectly fixedly connected to the output shaft 22 by being fixedly connected to the support plate 24, which is convenient for Replacing the grinding wheel 21 can form a better support for the grinding wheel 21 at the same time.

The dust cover 20 is provided with a dust collecting hole that communicates with the air inlet. Specifically, the dust collecting hole is communicated with the air inlet through a suction pipe integrally connected to the dust suction box 30 . The dust collection hole is located on the side of the support disc 24 away from the grinding wheel 21 . Preferably, the side of the support disc 24 facing the dust collection hole is integrally connected with a fan blade.

The handle rod 50 is a hollow handle rod, and the inner cavity of the handle rod 50 is communicated with the air outlet through a hose 51 . The inner cavity of the handle rod 50 can be directly used as a dust collection chamber, or the end of the handle rod 50 away from the hose 51 can be connected to an external dust collecting box (not part of the sanding machine provided in this embodiment), so that the handle rod 50 The inner cavity is used as a dust collection channel. Preferably, the handle bar 50 is a telescopic handle, and the handle bar 50 is covered with a holding sleeve 52 .

When in use, the grinding wheel 21 is pressed against the wall by holding the handle bar 50 to carry out the grinding operation. During the grinding process, the dust generated by grinding enters the dust cover 20 from the gap between the grinding wheel 21 and the dust cover 20. Driven by the fan blade or the support plate 24, the dust cover 20 rotates, and then the suction force generated by the wind wheel 31 is sucked into the dust collecting box 30 from the dust collecting hole, and finally discharged into the inner cavity of the handle rod 50, effectively Alleviate the dust flying during the grinding process.

The present utility model has been described in detail above in conjunction with the accompanying drawings, but the embodiments of the present utility model are not limited to the above-mentioned embodiments. Those skilled in the art can make various modifications to the present utility model according to the prior art, which all belong to the present utility model. A new range of protection.

Claims (8)

1. A sanding machine, characterized in that it comprises a casing, a dust cover and a vacuum box that are fixedly connected to the casing respectively, and a motor installed on the casing, and the dust box is A wind wheel connected to the motor is provided, and the dust box is provided with an air inlet and an air outlet respectively located on both sides of the wind wheel, and the dust cover is provided with a transmission connection with the motor. The dust-proof cover is provided with a dust-collecting hole communicating with the air inlet. 2 . The sanding machine according to claim 1 , wherein a first bevel gear or a bevel tooth segment is arranged on the output shaft of the motor, and the wind wheel is fixedly connected with a coaxial arrangement with the wind wheel. 3 . The transmission shaft is provided with a second bevel gear that meshes with the first bevel gear or the bevel gear segment, and the grinding wheel is in driving connection with the transmission shaft. 3. The sanding machine according to claim 2, wherein an output shaft is fixedly connected to the grinding wheel, an output gear is arranged on the output shaft, and an output gear is arranged on the transmission shaft to mesh with the output gear the transmission gear or gear section. 4. The sanding machine of claim 3, wherein the output gear is a helical gear. 5 . The sanding machine according to claim 3 , wherein a support disc is fixedly connected to the output shaft, and the grinding wheel is indirectly fixedly connected to the output shaft by being fixedly connected to the support disc. 6 . 6. The sanding machine according to any one of claims 1-5, further comprising a handle rod rotatably connected to the casing, the handle rod is a hollow handle rod, and the The inner cavity of the handle rod is communicated with the air outlet through a hose. 7. The sander of claim 6, wherein the handle bar is a telescopic handle. 8. The sanding machine according to claim 6, characterized in that, a grip sleeve is provided on the outer cover of the handle bar.

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