Grinding disc structure

Abstract

The utility model discloses a polishing disc structure which comprises a polishing disc body, a baffle disc is arranged in the polishing disc body, a plurality of air inlet channels are arranged in the polishing disc body, and air inlets which are communicated with each other are arranged above the air inlet channels and the baffle disc. A plurality of air outlets are formed in the air inlet channel; a plurality of air outlet channels are further formed in the grinding disc body, and air outlets which are communicated with one another are formed between the air outlet channels and the end face of the baffle disc. The plurality of air inlet channels are arranged on the polishing disc body, and the air outlet channels are arranged among the air inlet channels, so that airflow can be quickly switched between the two end faces of the polishing disc body, heat and impurities can be quickly discharged from the air outlets, the polishing effect is good, and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding discs, and particularly relates to a grinding disc structure. Background Art

[0002] A grinding machine is a commonly used electric tool, which usually includes a grinding disc body, a motor and a dust suction device; when the motor works, it drives the grinding disc body to rotate, and at the same time the dust suction device works to suck out the impurities generated during the grinding process. Generally, the existing grinding disc body often only has several dust suction holes, resulting in poor air intake effect, so that the effect of the dust suction device in sucking impurities is relatively poor. At the same time, the number of dust suction hole positions on the grinding disc body is small, and there are no large heat dissipation hole positions, resulting in poor heat dissipation effect of the grinding disc body, affecting the grinding quality of the ground surface of the object to be ground. Therefore, it is necessary to design a grinding disc structure to overcome the above difficulties. Summary of the Invention

[0003] In view of the problems existing in the prior art, the utility model designs a grinding disc structure. The utility model is provided with a plurality of air inlet channels on the grinding disc body, and an air outlet channel is arranged between the air inlet channels, so that the air flow can quickly switch between the two end faces of the grinding disc body, and heat and impurities are quickly discharged from the air outlet, and the grinding effect is good and the service life is long.

[0004] The invention object of the utility model is realized by the following technical scheme: a grinding disc structure, including a grinding disc body, a retaining disc is arranged in the grinding disc body, a plurality of air inlet channels are arranged in the grinding disc body, and an air inlet which is mutually communicated is arranged above the air inlet channels and the retaining disc; a plurality of air outlet openings are arranged on the air inlet channels; a plurality of air outlet channels are also arranged on the grinding disc body, and an air outlet which is mutually communicated is arranged between the end face of the air outlet channel and the retaining disc.

[0005] Preferably, a limiting disc is arranged on the end face of the retaining disc, and an annular gasket is arranged between the retaining disc and the grinding disc body. A fastener for fixing the four is arranged among the grinding disc body, the annular gasket, the retaining disc and the limiting disc; the air outlet and the air inlet are arranged on the same horizontal end face.

[0006] Preferably, the air inlet channels include straight air inlet channels and zigzag air inlet channels; the straight air inlet channels are arranged in pairs, and the zigzag air inlet channels are also arranged in pairs. The two straight air inlet channels and the two zigzag air inlet channels are sequentially and annularly distributed in a staggered manner in the grinding disc body.

[0007] By arranging the straight air inlet channels and the zigzag air inlet channels, it is convenient for air to enter the inside of the grinding disc body from the air inlet, and then the air is discharged from the air outlet openings.

[0008] Preferably, an air inlet is provided between the straight air inlet channel and the outer edge of the baffle plate. A plurality of air outlet ports are arranged in the straight air inlet channel along its axial direction. The air inlet is arranged outside the air outlet ports, and each air outlet port extends from the outside to the inside along the radial direction of the grinding disc body.

[0009] After the dust collection device on the grinding disc works, gas enters the inside of the grinding disc body from the air inlet between the baffle plate and the grinding disc body, and then the gas is discharged from the air outlet ports, so that the gas can impact the surface of the object to be ground.

[0010] Preferably, an air inlet is provided between the zigzag air inlet channel and the outer edge of the baffle plate. A plurality of air outlet ports are arranged in the zigzag air inlet channel along its axial direction. The air inlet is arranged outside the air outlet ports, and each air outlet port extends from the outside to the inside along the zigzag air inlet channel. A first through hole is provided in the middle of the grinding disc body, and the end of each zigzag air inlet channel communicates with the first through hole.

[0011] After the dust collection device on the grinding disc works, gas enters the inside of the grinding disc body from the air inlet between the baffle plate and the grinding disc body, and then the gas is discharged from the air outlet ports. At the same time, the gas also enters the first through hole along the zigzag air inlet channel and is then discharged from the first through hole. Since the aperture of the first through hole is larger than that of the air outlet ports, rapid air intake can be achieved.

[0012] Preferably, the air outlet channel includes a first type of air outlet channel, a second type of air outlet channel, and a third type of air outlet channel. The first type of air outlet channel, the second type of air outlet channel, and the third type of air outlet channel are sequentially arranged in a ring-shaped and staggered manner inside the grinding disc body. One second type of air outlet channel is provided between any two first type of air outlet channels and third type of air outlet channels. A first air inlet is provided in each air outlet channel, and each first air inlet communicates with the air outlet.

[0013] By providing the first type of air outlet channel, the second type of air outlet channel, and the third type of air outlet channel, it is convenient for air to exchange between the grinding disc body and the object to be ground. Then, impurities will be sucked into the inside of the grinding disc body along the first air inlet with the air and then discharged from the air outlet, so that the impurities can be continuously sucked into the dust collection device. At the same time, the air outlet can also play a role in rapid heat dissipation.

[0014] Preferably, the first type of air outlet channel includes a first branch channel, a second branch channel, and a third branch channel. The first branch channel, the second branch channel, and the third branch channel communicate with each other, and all three communicate with the first air inlet. A second air inlet is provided in the first branch channel, a second air inlet is provided in the second branch channel, and a second air inlet is provided in the third branch channel. The outer contour of the first air inlet and the air outlet are mutually adapted, and the first air inlet and the air outlet are coaxially arranged.

[0015] Preferably, the second type of air outlet channel includes a first branch channel, a second branch channel and a third branch channel; the first branch channel, the second branch channel and the third branch channel are interconnected, and all three are interconnected with the first air inlet; a second air inlet is provided in the first branch channel, two second air inlets arranged side by side are provided in the second branch channel, and a second air inlet is provided in the third branch channel; the outer contours of the first air inlet and the air outlet are adapted to each other, the first air inlet is a waist-shaped hole, and the first air inlet and the air outlet are coaxially arranged.

[0016] Preferably, the third type of air outlet channel includes a first branch channel, a second branch channel and a third branch channel; the first branch channel, the second branch channel and the third branch channel are interconnected, and all three are interconnected with the first air inlet; a second air inlet is provided in the first branch channel, two second air inlets arranged side by side are provided in the second branch channel, and a second air inlet is provided in the third branch channel; the outer contours of the first air inlet and the air outlet are adapted to each other, the first air inlet is a circular hole, and the first air inlet and the air outlet are coaxially arranged.

[0017] Preferably, a first step is provided at the edge of the grinding disc body, and the edge of the baffle is clamped on the first step; a second step is provided in the middle of the grinding disc body, and the edge of the annular gasket is clamped on the second step; threaded holes for installing fasteners are provided inside the grinding disc body; each of the fasteners passes through the limit plate, the baffle and the annular gasket in sequence, and the fastener and the threaded hole are threadedly connected.

[0018] By setting the first step, it is convenient to limit the baffle; by setting the second step, it is convenient to limit the annular gasket; by setting the threaded hole, it is convenient to install the fastener.

[0019] Compared with the prior art, the utility model has the following beneficial effects: 1. By setting the air inlet channel and the air outlet channel, it is convenient to quickly switch the gas at the two end faces of the grinding disc body, which has a good heat dissipation effect; the service life of the grinding disc body is improved, and the grinding effect is better; 2. By setting a plurality of air inlet channels, the air inlet channels are evenly distributed on the grinding disc body, and the air inlet efficiency is higher; an air outlet channel is provided between any two air inlet channels, which facilitates gas exchange and improves ventilation efficiency; 3. The air inlet of the air inlet channel and the air outlet of the air outlet channel are arranged on the same end face, the air pressure is more balanced, and the ventilation efficiency is greatly improved; 4. An air outlet is provided at the end of the air outlet channel, which is convenient for exhaust and impurities are discharged synchronously with the gas. There are fewer impurities during the grinding process, which greatly improves the grinding effect and grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the utility model;

[0021] Figure 2 is a perspective view of another angle of the present utility model;

[0022] Figure 3 is the front view of the present utility model;

[0023] Figure 4 is the rear view of the present utility model;

[0024] Figure 5 is the exploded view of the present utility model;

[0025] Figure 6 is the perspective view of the grinding disc body;

[0026] Reference numerals in the figure: 1, grinding disc body; 2, retaining disc; 3, limiting disc; 4, annular gasket; 5, fastener; 6, air inlet; 7, air outlet; 8, air outlet; 9, straight air inlet channel; 10, folded air inlet channel; 11, first type of air outlet channel; 12, second type of air outlet channel; 13, third type of air outlet channel; 14, first air inlet; 15, first branch channel; 16, second branch channel; 17, third branch channel; 18, second air inlet; 19, first step; 20, second step; 21, threaded hole; 22, first through hole. Detailed implementation manners

[0027] The present utility model will be further described below in conjunction with the embodiments shown in the accompanying drawings:

[0028] As Figures 1 to 6 shown, this embodiment discloses a grinding disc structure, including a grinding disc body 1. A retaining disc 2 is provided inside the grinding disc body 1. A plurality of air inlet channels are provided inside the grinding disc body 1. An air inlet 6 that is mutually communicated is provided above the air inlet channels and the retaining disc 2. A plurality of air outlets 7 are provided on the air inlet channels. A plurality of air outlet channels are further provided on the grinding disc body 1. An air outlet 8 that is mutually communicated is provided between the air outlet channels and the end face of the retaining disc 2.

[0029] A limiting disk 3 is provided at the end face of the retaining disk 2, and an annular gasket 4 is provided between the retaining disk 2 and the grinding disk body 1. A fastener 5 for fixing the four components of the grinding disk body 1, the annular gasket 4, the retaining disk 2, and the limiting disk 3 is provided therebetween; the air outlet 8 and the air inlet 6 are provided on the same horizontal end face. The air inlet passage includes a straight air inlet passage 9 and a folded air inlet passage 10; the straight air inlet passages 9 are arranged in pairs, and the folded air inlet passages 10 are also arranged in pairs. The two straight air inlet passages 9 and the two folded air inlet passages 10 are sequentially distributed in a ring-shaped and staggered manner within the grinding disk body 1. An air inlet 6 is provided between the straight air inlet passage 9 and the outer edge of the retaining disk 2, and a plurality of air outlet ports 7 are provided in the straight air inlet passage 9 along its axial direction; the air inlet 6 is provided outside the air outlet ports 7, and each air outlet port 7 extends from the outside to the inside along the radial direction of the grinding disk body 1. An air inlet 6 is provided between the folded air inlet passage 10 and the outer edge of the retaining disk 2, and a plurality of air outlet ports 7 are provided in the folded air inlet passage 10 along its axial direction; the air inlet 6 is provided outside the air outlet ports 7, and each air outlet port 7 extends from the outside to the inside along the folded air inlet passage 10; a first through hole 22 is provided in the middle of the grinding disk body 1, and the end of each folded air inlet passage 10 is in communication with the first through hole 22.

[0030] The air outlet channels include a first type of air outlet channel 11, a second type of air outlet channel 12, and a third type of air outlet channel 13. The first type of air outlet channel 11, the second type of air outlet channel 12, and the third type of air outlet channel 13 are sequentially arranged in a ring and staggered with each other within the grinding wheel body 1. One second type of air outlet channel 12 is provided between any two of the first type of air outlet channels 11 and the third type of air outlet channels 13; a first air inlet 14 is provided in each of the air outlet channels, and each of the first air inlets 14 communicates with the air outlet 8. The first type of air outlet channel 11 includes a first branch channel 15, a second branch channel 16, and a third branch channel 17; the first branch channel 15, the second branch channel 16, and the third branch channel 17 communicate with each other, and all three communicate with the first air inlet 14; a second air inlet 18 is provided in the first branch channel 15, a second air inlet 18 is provided in the second branch channel 16, and a second air inlet 18 is provided in the third branch channel 17; the outer contour of the first air inlet 14 and the air outlet 8 are mutually adapted, and the first air inlet 14 and the air outlet 8 are coaxially arranged. The second type of air outlet channel 12 includes a first branch channel 15, a second branch channel 16, and a third branch channel 17; the first branch channel 15, the second branch channel 16, and the third branch channel 17 communicate with each other, and all three communicate with the first air inlet 14; a second air inlet 18 is provided in the first branch channel 15, two second air inlets 18 arranged side by side are provided in the second branch channel 16, and a second air inlet 18 is provided in the third branch channel 17; the outer contour of the first air inlet 14 and the air outlet 8 are mutually adapted, the first air inlet 14 is a waist-shaped hole, and the first air inlet 14 and the air outlet 8 are coaxially arranged. The third type of air outlet channel 13 includes a first branch channel 15, a second branch channel 16, and a third branch channel 17; the first branch channel 15, the second branch channel 16, and the third branch channel 17 communicate with each other, and all three communicate with the first air inlet 14; a second air inlet 18 is provided in the first branch channel 15, two second air inlets 18 arranged side by side are provided in the second branch channel 16, and a second air inlet 18 is provided in the third branch channel 17; the outer contour of the first air inlet 14 and the air outlet 8 are mutually adapted, the first air inlet 14 is a circular hole, and the first air inlet 14 and the air outlet 8 are coaxially arranged.

[0031] A first step 19 is provided at the edge of the grinding wheel body 1, and the edge of the retaining disc 2 is stuck on the first step 19; a second step 20 is provided in the middle of the grinding wheel body 1, and the edge of the annular gasket 4 is stuck on the second step 20; threaded holes 21 for installing fasteners 5 are provided inside the grinding wheel body 1; each of the fasteners 5 sequentially passes through the limiting disc 3, the retaining disc 2, and the annular gasket 4, and the fastener 5 is threadedly connected to the threaded hole 21.

[0032] The specific operation process of this embodiment is as follows. When the motor of the grinding machine drives the grinding disc body 1 to rotate, the dust suction device inside the grinding machine works synchronously; the gas enters the air inlet channel along the air inlet 6. The air inlet channel includes a linear air inlet channel 9 and a folded air inlet channel 10; the gas entering the linear air inlet channel 9 is directly discharged from the air outlet 7 to the surface of the object to be ground; for the gas entering the folded air inlet channel 10, a part of it is discharged from the air outlet 7 to the surface of the object to be ground, and the other part of the gas enters the first through hole 22 along the folded air inlet channel 10, and then is discharged to the surface of the object to be ground along the first through hole 22. During the grinding process, the dust suction device keeps working, and the gas and impurities will be synchronously sucked into the air outlet channel and then discharged along the air outlet 8. During the discharge process of the gas and impurities, the large-particle impurities are directly discharged from the air outlet 8, and some small-particle impurities are first sucked into the air outlet channel from the second air inlet 18 and then discharged from the air outlet 8. Since the aperture of the second air inlet 18 is smaller than that of the first air inlet 14, the gas can quickly enter the air outlet channel along the second air inlet 18, and then the gas is uniformly discharged from the air outlet 8.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A grinding disc structure, comprising a grinding disc body (1), characterized in that: A baffle plate (2) is provided inside a grinding disc body (1), and a plurality of air inlet channels are provided inside the grinding disc body (1), and mutually communicating air inlets (6) are provided above the air inlet channels and the baffle plate (2); a plurality of air outlets (7) are provided on the air inlet channels; and a plurality of air outlet channels are also provided on the grinding disc body (1), and mutually communicating air outlets (8) are provided between the air outlet channels and the end surfaces of the baffle plate (2).

2. The grinding disc structure according to claim 1, characterized in that: A limiting plate (3) is provided on the end surface of the baffle plate (2); an annular gasket (4) is provided between the baffle plate (2) and the grinding plate body (1); and a fastener (5) is provided between the grinding plate body (1), the annular gasket (4), the baffle plate (2) and the limiting plate (3) for fixing the four. The air outlet (8) and the air inlet (6) are arranged on the same horizontal end surface.

3. The grinding disc structure according to claim 1, characterized in that: The air inlet channels include a straight air inlet channel (9) and a folded-line air inlet channel (10); the straight air inlet channels (9) are arranged in pairs, and the folded-line air inlet channels (10) are also arranged in pairs, and the two straight air inlet channels (9) and the two folded-line air inlet channels (10) are sequentially distributed in an annular manner and staggered in the grinding disc body (1).

4. The grinding disc structure according to claim 3, characterized in that: An air inlet (6) is provided between the linear air inlet channel (9) and the outer edge of the baffle plate (2), and a plurality of air outlets (7) are provided in the linear air inlet channel (9) and are distributed along the axial direction thereof; the air inlet (6) is arranged outside the air outlet (7), and each of the air outlets (7) extends from the outside to the inside along the radial direction of the grinding disc body (1).

5. The grinding disc structure according to claim 3, characterized in that: An air inlet (6) is provided between the folded-line air inlet channel (10) and the outer edge of the baffle plate (2), and a plurality of air outlets (7) are provided in the folded-line air inlet channel (10) and are distributed along the axial direction thereof; the air inlet (6) is arranged outside the air outlet (7), and each of the air outlets (7) extends from the outside to the inside along the folded-line air inlet channel (10); a first through hole (22) is provided in the middle of the grinding disc body (1), and the end of each of the folded-line air inlet channels (10) and the first through hole (22) are in electrical communication with each other.

6. The grinding disc structure according to claim 1, characterized in that: The air outlet channels comprise a first type of air outlet channel (11), a second type of air outlet channel (12) and a third type of air outlet channel (13); the first type of air outlet channel (11), the second type of air outlet channel (12) and the third type of air outlet channel (13) are arranged in a circular and staggered manner in sequence in the grinding disc body (1); a second type of air outlet channel (12) is provided between any two of the first type of air outlet channels (11) and the third type of air outlet channels (13); each of the air outlet channels is provided with a first air inlet (14), and each of the first air inlet (14) and the air outlet (8) are connected to each other.

7. The grinding disc structure according to claim 6, characterized in that: The first type of air outlet channel (11) comprises a first branch channel (15), a second branch channel (16) and a third branch channel (17); the first branch channel (15), the second branch channel (16) and the third branch channel (17) are interconnected, and all three are interconnected with the first air inlet (14); a second air inlet (18) is provided in the first branch channel (15), a second air inlet (18) is provided in the second branch channel (16), and a second air inlet (18) is provided in the third branch channel (17); the outer contours of the first air inlet (14) and the air outlet (8) are adapted to each other, and the first air inlet (14) and the air outlet (8) are coaxially arranged.

8. The grinding disc structure according to claim 6, characterized in that: The second type of air outlet channel (12) comprises a first branch channel (15), a second branch channel (16) and a third branch channel (17); the first branch channel (15), the second branch channel (16) and the third branch channel (17) are interconnected, and all three are interconnected with the first air inlet (14); a second air inlet (18) is provided in the first branch channel (15), two second air inlets (18) arranged side by side are provided in the second branch channel (16), and a second air inlet (18) is provided in the third branch channel (17); the outer contours of the first air inlet (14) and the air outlet (8) are adapted to each other, the first air inlet (14) is a waist-shaped hole, and the first air inlet (14) and the air outlet (8) are coaxially arranged.

9. The grinding disc structure according to claim 6, characterized in that: The third type of air outlet channel (13) comprises a first branch channel (15), a second branch channel (16) and a third branch channel (17); the first branch channel (15), the second branch channel (16) and the third branch channel (17) are interconnected, and all three are interconnected with the first air inlet (14); a second air inlet (18) is provided in the first branch channel (15), two second air inlets (18) arranged side by side are provided in the second branch channel (16), and a second air inlet (18) is provided in the third branch channel (17); the outer contours of the first air inlet (14) and the air outlet (8) are adapted to each other, the first air inlet (14) is a circular hole, and the first air inlet (14) and the air outlet (8) are arranged coaxially.

10. The grinding disc structure according to claim 2, characterized in that: The edge of the grinding disc body (1) is provided with a first step (19), and the edge of the baffle plate (2) is clamped on the first step (19); a second step (20) is provided in the middle of the grinding disc body (1), and the edge of the annular gasket (4) is clamped on the second step (20); threaded holes (21) for installing fasteners (5) are provided inside the grinding disc body (1); each fastener (5) passes through the limiting disc (3), the baffle plate (2) and the annular gasket (4) in sequence, and the fastener (5) and the threaded hole (21) are threadedly connected.

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