TWI519383B - Waterproof grinding machine - Google Patents

Description

Waterproof grinding machine

The invention relates to a grinding machine tool, in particular to a waterproof grinding machine tool.

According to the general tool machine, due to its small size and the ability to connect different application tools, various types of deformation, such as grinding discs, grinders, drilling machines, electric wrenches, etc., can be used to assist users in quickly grinding wood and automobiles. Articles such as paints, in addition to electric power-driven power tools, also have pneumatic tools driven by pressurized gas. A conventional pneumatic grinding tool includes a transmission mechanism, a linkage mechanism disposed on the transmission mechanism, and a grinding mechanism fixed to the linkage mechanism. When the pneumatic abrasive tool is actuated, the transmission mechanism transmits The grinding mechanism is rotated by a reciprocating grinding wheel to achieve the function of grinding the article.

However, since the pneumatic grinding machine tool is easy to generate dust during operation and affects the environment cleaning or clogging the machine tool, most of the general pneumatic grinding machine tools are provided with a dust cover to remove the pneumatic grinding machine tool during processing. As shown in the Chinese Patent Publication No. 517618, an exhaust structure of a pneumatic grinder is provided. The exhaust structure is provided with a grinding wheel having a dust collecting hole, the grinding wheel is provided with a dust cover, and the dust cover and a motor housing The motor housing is provided with a movable vane air motor unit, and an adjacent intake pipe and an air outlet pipe are disposed on one side of the motor casing, and the intake pipe and the air outlet pipe respectively receive a feed a gas valve group and an exhaust muffler group, and a chamber for accommodating a throttle valve and an adjusting button on the air inlet pipe and the air outlet pipe, the top surface of the motor casing is extended with a pair of a wing portion for fixing a movable air inlet plate machine, wherein the dust cover is provided with a receiving groove for pivoting the exhaust pipe of the motor casing, and the receiving groove is extended to the dust cover At the tube, and the motor casing of An exhaust pipe is provided with an L-shaped duct, and a lower end of the duct is provided with a deflector plate, so that the wind of the movable vane air motor group is discharged upward through an air outlet hole, and the lower end of the duct extends to the near dustproof The front end of the connecting portion of the cover portion of the cover can form a confluence between the exhaust of the motor and the outlet of the connecting portion of the dust cover, so that the dust after grinding can be quickly sucked out due to a large air outlet.

It can be seen from the above-mentioned pneumatic grinding machine that the dust collecting pipe and the dust cover are added to the pneumatic grinding machine tool, so that the pneumatic grinding machine can simultaneously perform the vacuuming operation, but since the pneumatic grinding machine is not only working, It can only be used on abrasives that generate dust. It may also require the use of liquid-related work or machine tools (such as ultra-fine water jet grinders). When the pneumatic grinding machine is used in operation, its angle of use is not only positive. It can be used in the vertical direction, or the machine tool can be used in the vertical direction or in the lateral direction, so that the liquid can easily enter the pneumatic grinding machine due to the angle of use between the dust cover and the base, or the gap of the mounting hole, and even invade the high speed. The rotating cylinder or the rotating bearing shaft causes the parts of the pneumatic grinding machine to be easily damaged.

The main object of the invention is to install on a machine tool to achieve the effect of waterproofing.

In order to achieve the above object, the present invention provides a waterproofing machine tool comprising a machine tool body, a waterproof cover body and a stop piece, the machine tool body comprising a casing portion accommodating a drive motor and being driven by the drive motor a driving plate for performing a rotation stroke and a grinding disk coupled to the driving plate and separated from the outer casing portion to form a gap, the waterproof cover body is sleeved on the machine tool body, and the waterproof cover body comprises at least covering a mask portion of the gap, a first closing portion attached to the outer casing portion, and a second closing portion integrally extending from the mask portion and sandwiched between the driving plate and the grinding disc The cover portion includes a venting hole penetrating the hood portion, and a accommodating portion between the hood portion and the outer casing portion is provided for driving the driving motor An accommodating space for the circulation of gas. The stop piece covers at least the vent hole, and the stop piece includes a stop portion having a diameter at least larger than the vent hole, and the stop piece surrounds and covers the vent hole.

In an embodiment, the second closure portion includes at least one first convex ring that is convex toward the driving plate.

In an embodiment, the second closing portion is provided with at least one second convex ring protruding toward the grinding disc.

In one embodiment, the driving board includes at least one first positioning hole, and the second closing portion includes at least one pair of fixing holes to be positioned, the first positioning hole and the fixing hole are locked by a lock The drive plate is coupled to the second closure portion.

In one embodiment, the grinding disc includes at least one pair of second positioning holes that should be fixed holes, and the second positioning holes and the fixing holes are locked by the lock to make the grinding disc and the second closing portion fixed.

In an embodiment, the buckle further includes a buckle that fastens the first closure portion to the outer casing portion.

In an embodiment, the mask portion includes at least one pair of positioning openings that should be fixed.

In an embodiment, the method further includes a stop piece covering at least the positioning opening, the stop piece having at least one closed portion relative to the positioning opening. According to the above technical solution, the beneficial effects that the present invention can achieve compared with the prior art are as follows: 1. The liquid can be prevented from flowing into the machine tool body by the gap between the driving plate and the grinding plate or the gap of the mounting hole, thereby achieving waterproofing. Purpose; Second, it can improve its fixation and tightness.

1‧‧‧Tool machine body

10‧‧‧ Shell Department

11‧‧‧Drive board

111‧‧‧First positioning hole

12‧‧‧ grinding disc

121‧‧‧Second positioning hole

13‧‧‧ gap

2‧‧‧Waterproof cover

20‧‧‧First closure

201‧‧‧ buckle

21‧‧‧Mask Department

211‧‧‧ venting holes

212‧‧‧Locating the opening

22‧‧‧ Second closure

221‧‧‧First convex ring

222‧‧‧second convex ring

223‧‧‧Fixed holes

3‧‧‧stop film

31‧‧‧stop

32‧‧‧Department

4‧‧‧Locker

1 is a schematic exploded perspective view of a first embodiment of a water-repellent grinding machine according to the present invention.

2 is another exploded perspective view of the first embodiment of the waterproof grinding machine tool of the present invention.

Fig. 3 is a schematic cross-sectional view showing the first embodiment of the waterproof abrasive working machine of the present invention.

Figure 4-1 is a schematic cross-sectional view showing a second embodiment of the water-repellent grinding machine of the present invention.

4-2 is a partially enlarged cross-sectional view showing the second embodiment of the waterproof grinding machine of the present invention.

Fig. 5 is a partially exploded perspective view showing the first embodiment of the waterproof grinding machine of the present invention.

Figure 6 is a cross-sectional view showing a partial structure of a first embodiment of the water-repellent grinding machine of the present invention.

The detailed description and technical contents of the present invention will now be described as follows:

1 to 3 are schematic exploded perspective views of the waterproof abrasive working machine of the present invention, another exploded perspective view of the three-dimensional structure, and a schematic cross-sectional view thereof, as shown in the figure: the waterproof grinding machine of the present invention comprises a machine tool body 1 and a waterproof cover 2, the machine tool body 1 comprises a housing portion 10, a driving plate 11 and a grinding disc 12, the housing portion 10 housing a driving motor (since the driving motor is a conventional technology, The driving plate 11 is driven by the driving motor to perform a rotation stroke, and the driving plate 11 is provided with at least one first positioning hole 111, and the grinding disk 12 is coupled to the driving. The plate 11 is disposed separately from the outer casing portion 10 to form a gap 13 . The waterproof cover 2 includes a first closing portion 20 , a mask portion 21 and a second closing portion 22 when the waterproof cover 2 is sleeved. The first closure portion 20 is attached to the outer casing portion 10 , and the mask portion 21 extends from the first closure portion 20 and covers at least the gap 13 . The second closure portion 22 is self-contained. The mask portion 21 extends integrally and is clamped to the drive Further, the second closing portion 22 is provided with at least one pair of fixing holes 223 which should be the first positioning holes 111, and the grinding disk 12 is provided with a second corresponding to the fixing holes 223. The positioning hole 121 is screwed into the first positioning hole 111, the fixing hole 223 and the second positioning hole 121 by a locking member 4 for being clamped to the driving plate 11 by the second closing portion 22. Between the grinding disc 12 and the second seal The closing portion 22 is fixedly coupled to the driving plate 11 and the grinding disc 12, and the waterproof cover 2 is sleeved and fixed to the machine tool body 1. The mask portion 21 covers at least the gap 13 and the covering portion. The outer casing portion 10 prevents the liquid from flowing into the machine tool body 1 from the gap between the driving plate 11 and the grinding disk 12 or the gap of the mounting hole, thereby achieving the purpose of waterproofing.

In the present embodiment, the first closing portion 20 can be fastened by a buckle 201, that is, when the waterproof cover 2 is sleeved on the outer casing portion 10, the first closing portion 20 is The buckle 201 is fastened for the first closure portion 20 to be attached and fixed to the outer casing portion 10, and the second closure portion 22 is sandwiched between the driving plate 11 and the polishing plate 12, and finally, The locking member 4 is interlocked with the first positioning hole 111, the second positioning hole 121, and the fixing hole 223, so that the waterproof cover 2 is fixed to the machine tool body 1 to avoid liquid from the driving plate. A gap between the grinding disc 12 and a slit of the mounting hole flows into the machine tool body 1 to improve waterproofing.

In addition, referring to FIGS. 5 and 6, a partial structural exploded view of a first embodiment of the waterproof abrasive working machine of the present invention and a partial structural cross-sectional view thereof, as shown in the figure, the waterproof cover 2 may further include a penetration. The venting hole 211 of the mask portion 21 and at least one pair of positioning holes 212 that should be fixed to the hole 223 are discharged between the hood portion 21 and the outer casing portion 10 through the vent hole 211 for providing driving The gas of the driving motor is provided with a stopper piece 3, and the stopper piece 3 is provided with a stopper portion 31 having a diameter larger than the vent hole 211 and a closing portion 32 opposite to the positioning opening 212. In the example, the positioning opening 212 is an opening having an inclined surface on one side, so that when the locking member 4 is locked, the locking member 4 is easily aligned by the positioning opening 212 having the inclined surface. a positioning hole 111, a second positioning hole 121, and the fixing hole 223, the locking degree is increased, and the stopping portion 31 is an annular protrusion, and the stopping piece 3 covers the positioning opening 212, and The fixing portion 32 is fixed to the positioning opening 212 to fix the stop piece 3 to the waterproof cover 2 On the cover portion 21, and because the diameter of the stop portion 31 is larger than the diameter of the vent hole 211, the stop portion 31 surrounds and covers the vent hole when the stop piece 3 covers the positioning opening 212. 211, by means of the stops 31 prevents liquid from flowing into the machine tool body 1 via the waterproof cover 2, and further, due to gas between the waterproof cover 2 and the outer casing portion 10 (that is, between the mask portion 21 and the outer casing portion 10) The pressure is greater than the pressure of the outside air of the machine tool body 1. When the liquid flows to the stops 31, the gas between the mask portion 21 and the outer casing portion 10 is caused by the internal gas pressure being greater than the external gas pressure. When the pressure discharges the gas, the liquid is discharged from the stopper portion 31, thereby preventing the liquid from intruding into the waterproof cover 2.

4-1 to 4-2 are a second embodiment of the waterproof abrasive working machine of the present invention and a partially enlarged cross-sectional view thereof, as shown in the figure: the waterproof grinding machine of the present embodiment is substantially similar to the first embodiment. The same, but the main difference is that the second closing portion 22 is provided with at least one first convex ring 221 protruding toward the driving plate 11 or/and a second convex ring 222 protruding toward the grinding disk 12, when the second The closing portion 22 is sandwiched between the driving plate 11 and the grinding disc 12, and the driving plate 11 or the grinding disc 12 can be pressed by the first protruding ring 221 or the second protruding ring 222. In this embodiment, The first surface of the second sealing portion 22 (the surface adjacent to the driving plate 11) is provided with a first convex ring 221 and a lower surface (the surface adjacent to the grinding disk 23) is provided with a second convex ring 222. The second closing portion 22 is sandwiched between the driving plate 11 and the grinding disc 12, and the driving plate 11 and the grinding disc 12 can be pressed by the first protruding ring 221 and the second protruding ring 222, that is, A convex ring is disposed on one or both surfaces of the second closing portion 22 to improve the fixability and the tightness.

In summary, the waterproof grinding machine of the present invention mainly includes a machine tool body and a waterproof cover. The machine body includes a casing portion, a driving plate and a grinding disk. The casing portion houses a driving motor. The driving plate is driven by the driving motor to perform a rotation stroke, and the grinding plate is coupled to the driving plate and separated from the outer casing portion to form a gap, and the waterproof cover body comprises a shielding portion, a first closing portion and a second closing portion extending integrally from the mask portion, and an accommodating space for accommodating a gas for driving the driving motor to be disposed between the shielding portion and the outer casing portion for arranging the waterproof cover In the machine tool body, the mask portion covers at least the gap, the first closing portion is attached to the outer casing portion, and the second closing portion is clamped Between the driving plate and the grinding plate, the liquid is prevented from flowing into the machine tool body through the gap between the driving plate and the grinding plate or the gap of the mounting hole, thereby providing waterproofing.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.

1‧‧‧Tool machine body

10‧‧‧ Shell Department

11‧‧‧Drive board

111‧‧‧First positioning hole

12‧‧‧ grinding disc

121‧‧‧Second positioning hole

2‧‧‧Waterproof cover

20‧‧‧First closure

201‧‧‧ buckle

21‧‧‧Mask Department

211‧‧‧ venting holes

212‧‧‧Locating the opening

22‧‧‧ Second closure

3‧‧‧stop film

4‧‧‧Locker

Claims (8)

A waterproof grinding machine includes: a machine tool body including a housing portion accommodating a driving motor, a driving board driven by the driving motor to perform a rotation stroke, and a linkage to the driving board and the The outer casing portion is separated to form a gap grinding disc; a waterproof cover body is sleeved on the machine tool body, the waterproof cover body includes a first closing portion attached to the outer casing portion, from the first closing portion a mask portion extending and covering at least the gap, and a second closing portion extending integrally from the mask portion and sandwiched between the driving plate and the grinding disc, the mask portion including a through cover a venting hole of the cover portion; and a stopper piece covering at least the venting hole, the stopper piece including a stopper portion having a diameter at least larger than the vent hole, the stopper piece surrounding and covering the vent hole . The water-repellent power tool of claim 1, wherein the second closure portion includes at least one first convex ring that is convex toward the driving plate. The water-repellent grinder as claimed in claim 1 , wherein the second closing portion is provided with at least one second convex ring protruding toward the grinding disc. The water-repellent grinding machine of claim 1, wherein the driving plate comprises at least one first positioning hole, the second closing portion comprises at least one pair of fixing holes to be positioned, the first positioning hole and The fixing hole fixes the driving plate with the second closing portion by a lock. The water-repellent grinding machine of claim 4, wherein the grinding disc comprises at least one pair of second positioning holes that should be fixed holes, and the second positioning holes and the fixing holes are locked by the fastener The grinding disc is fixed to the second closing portion. The water-repellent grinder for use in claim 4, wherein the mask portion includes at least one pair of positioning holes to be fixed. The waterproof abrasive power tool of claim 6, further comprising a stop piece covering at least the positioning opening, the stop piece having at least one closed portion relative to the positioning opening. The waterproof abrasive machine according to claim 1, further comprising a buckle that fastens the first closure portion to the outer casing portion.