EP3421173A1 - Grinding machine - Google Patents
Grinding machine Download PDFInfo
- Publication number
- EP3421173A1 EP3421173A1 EP17178101.6A EP17178101A EP3421173A1 EP 3421173 A1 EP3421173 A1 EP 3421173A1 EP 17178101 A EP17178101 A EP 17178101A EP 3421173 A1 EP3421173 A1 EP 3421173A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- grinding machine
- gas
- grinding
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000227 grinding Methods 0.000 title claims abstract description 135
- 238000004891 communication Methods 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001238 wet grinding Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 87
- 238000010586 diagram Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000009837 dry grinding Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/026—Fluid driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
- B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
Definitions
- the present invention relates to a grinding machine, and particularly to a grinding machine that forms a positive pressure environment between a grinding machine body and a grinding disc to eliminate invasion of dust and moisture.
- the dust sucking structure sucks dust generated during a process of grinding a material under grinding, as disclosed in TW 439616 , CN 1748939 , US 6,802,766 , US 7,722,438 , JP5760892 , JP5696488 , JP5682410 , JP2014217920 , JP2014124752 , JP2014039975 , JP2012210691 , EP2479001 , EP3028811 and EP2611573 patents.
- a grinding environment of the grinding machine is not limited to only dry grinding but also includes wet grinding. If wet grinding is performed using conventional technologies of the above patents, moisture or water, which is not easy to clean, may be drawn by the dust and enter the grinding machine. If the grinding machine is disassembled to allow moisture or water to evaporate each time the grinding machine is used after grinding, more grinding machines need to be purchased in order to use the grinding machines in turn, leading to increased costs. Further, disassembling the grinding machines also causes a waste in working hours. In addition, industries today are gradually evolving into implementation conducted by robots, and working hours of the robots may be reduced if grinding machines installed on the robots need to be disassembled from the robots in the long run.
- the present invention provides a grinding machine including a grinding machine body and a grinding disc connected to the grinding machine body.
- the grinding machine body is provided with a pressure cavity at a position facing the grinding disc, and a gas intake pipe corresponding to the pressure cavity.
- a pressure release gap in communication with the pressure cavity is formed between the grinding machine body and the grinding disc.
- the gas intake pipe induces a high-pressure gas into the pressure cavity.
- the pressure cavity receives an effect of the high-pressure gas to cause its internal pressure to be greater than the pressure outside the grinding machine body, such that the pressure cavity becomes a positive-pressure environment.
- the pressure cavity is in communication with the pressure release gap to allow the high-pressure gas to be continually released via the pressure release gap, so as to prohibit external dust from entering the pressure cavity.
- the gas intake pipe is connected to an external gas source, and receives the high-pressure gas from the external gas source.
- the grinding machine body includes a host housing and a cover body connected to the host housing.
- the gas intake pipe is disposed on the cover body, which defines the pressure cavity and has its one side facing the grinding disc appear hollow to allow the high-pressure gas to flow towards the pressure release gap.
- the cover body includes a first end connected to the host housing and a second end facing the grinding disc.
- the size of the second end is greater than the size of the first end.
- the grinding machine body includes a connecting member, which is disposed in the cover body and causes the grinding disc to be linked with a power assembly disposed in the host housing.
- the grinding machine body includes the host housing and a gas guiding pipe.
- the host housing includes a cavity for disposing the power assembly, a gas intake channel in communication with the cavity and receiving the high-pressure gas from the external gas source, and a gas output channel in communication with the cavity and discharging the high-pressure gas out of the cavity.
- the gas guiding pipe has its two ends respectively connected to the gas output channel and the gas intake channel to guide the high-pressure gas into the pressure cavity.
- the grinding machine body includes a regulating valve connected to the gas output channel and the gas guiding pipe.
- the grinding machine body includes a coupling tube.
- the coupling tube includes a first channel connected to the gas output channel and the gas guiding pipe, and a second channel branched from and in communication with the first channel and causing a part of the high-pressure gas to be released.
- the coupling tube includes a deflation control member disposed in the second channel.
- the deflation control member includes a plug body and a through hole disposed on the plug body.
- the present invention includes following features compared to the prior art.
- the pressure cavity becomes a positive-pressure environment because of the high-pressure gas, and the high-pressure is caused to be discharged via the pressure release gap, such that not only dust is prohibited from entering the pressure cavity but also the pressure cavity is kept dry.
- components of the grinding machine disposed in the pressure cavity are provided with better heat dissipation.
- the high-pressure gas drives the airflow around the grinding machine to further prohibit the dust from entering the pressure cavity.
- the present invention provides a grinding machine 10, which primarily includes a grinding machine body 11 and a grinding disc 12 connected to the grinding machine body 11.
- the grinding machine body 11 is provided with a pressure cavity 13 at a position facing the grinding disc 12, and a gas intake pipe 111 corresponding to the pressure cavity 13.
- the gas intake pipe 111 is in communication with the pressure cavity 13.
- a lower edge of the grinding machine body 11 is not closely connected to the grinding disc 12, so as to form a pressure release gap 14 in communication with the pressure cavity 13.
- the grinding machine body 11 has its one side facing the grinding disc 12 designed as recessed to form the pressure cavity 13. That is to say, the pressure cavity 13 and the pressure release gap 14 are in fact in communication.
- the grinding machine body 11 includes a host housing 112 and a cover body 113 connected to the host housing 112.
- the cover body 113 is not in close contact with the grinding disc 12, so as to form the pressure release gap 14.
- the cover body 113 may appear slightly similar to an umbrella to define the pressure cavity 13, and has its one side facing the grinding disc 12 appear hollow to cause the pressure cavity 13 to be in direct communication with the pressure release gap 14.
- the cover body 113 includes a first end 114 connected to the host housing 112, and a second end 115 connected to and facing the grinding disc 12. In one embodiment, the size of the second end 115 is greater than the size of the first end 114, as shown in Fig. 2 .
- the grinding machine body 11 includes a connecting member 116, which is disposed at the cover body 113 and causes the grinding disc 12 to be linked with a power assembly 15 disposed in the host housing 112. Further, the connecting member 116 is installed on a transmission shaft 151 of the power assembly 15. When the power assembly 15 is activated and rotates, the transmission shaft 151 drives the connecting member 116 to rotate to further rotate the grinding disc 12. Further, the connecting member 116 may be a counterweight to stabilize the rotation of the grinding disc 12 though counterweight.
- the gas intake pipe 111 of the present invention may be connected to an external gas source (not shown), and induces a high-pressure gas to enter the pressure cavity 13 when the external gas source is activated. At this point, the pressure in the pressure cavity 13 suddenly becomes greater than the pressure outside the pressure cavity 13 due to the high-pressure gas induced. That is too say, the pressure in the pressure cavity 13 is greater than the pressure outside the grinding machine body 11. As such, the pressure cavity 13 becomes a positive-pressure environment. The high-pressure gas is later continually released via the pressure release gap 14, and a flow of the gas pressure is as shown in Fig. 3 . Referring to Fig.
- the high-pressure gas is caused to enter the pressure cavity 13, such that moisture or water seeping into the pressure cavity 13 is blown dry by the high-pressure gas when the grinding machine 10 performs wet grinding.
- the pressure cavity 13 of the grinding machine 10 can be appropriately kept dry to prevent a part of the components of the grinding machine 10 from corrosion caused by accumulated moisture or water.
- the grinding machine 10 is adaptable to various grinding environments (e.g., wet grinding or dry grinding), so as to reduce the frequency of post-implementation equipment maintenance and to be readily installed to a mechanical arm (not shown). Further, through the above technical solution, the transmission shaft 151 and nearby structures may be blown by the high-pressure gas during a grinding process, such that thermal exchange may be performed to prevent heat from accumulating on the transmission shaft 151 and the nearby structures.
- various grinding environments e.g., wet grinding or dry grinding
- the transmission shaft 151 and nearby structures may be blown by the high-pressure gas during a grinding process, such that thermal exchange may be performed to prevent heat from accumulating on the transmission shaft 151 and the nearby structures.
- Fig. 1 Although the grinding machine 10 implemented by a pneumatic approach is illustrated in Fig. 1 as an example, it should be noted that the embodiments of the present invention are not limited to the pneumatic grinding machine 10, and may be applied to the grinding machine 10 implemented by an electric approach.
- the grinding disc 12 of the present invention may also be implemented in a square form, as shown in Fig. 5 .
- implementation concepts are the same and shall be omitted herein.
- the host housing 112 includes a cavity 117 for disposing the power assembly 15, an gas intake channel 118 connected to the cavity 117 and for receiving the high-pressure gas from the external gas source, and a gas output channel 119 in communication with the cavity 117 and for discharging the high-pressure gas out of the cavity 117.
- the gas intake channel 118 receives the high-pressure gas into the cavity 117.
- the high-pressure gas drives the power assembly 15 to rotate, which further drives the grinding disc 12 to rotate for grinding.
- the grinding machine body 11 includes a gas guiding pipe 16, which has its two ends respectively connected to the gas output channel 119 and the gas intake pipe 111.
- the gas guiding pipe 16 receives the high-pressure gas discharged from the gas output channel 119, and guides the high-pressure gas into the pressure cavity 13. As such, the high-pressure gas is effectively utilized to prevent the high-pressure gas from becoming waste gas after only a one-time operation.
- the grinding machine body 11 may further include a regulating valve 17, which is connected between the gas output channel 119 and the gas guiding pipe 16. Through the regulating valve 17, the amount of the high-pressure gas entering the pressure cavity 13 through the gas guiding pipe 16 is controlled. Further, there are numerous types of the regulating valve 17, and associated details shall be omitted herein. During an application process of the regulating valve 17, as shown in Fig. 8 , the regulating valve 17 may release a part of the high-pressure gas to reduce the amount of the high-pressure gas entering the gas guiding pipe 16. Referring to Fig. 7 to Fig. 9 , in one embodiment, the grinding machine body 11 may further include a coupling tube 18.
- the coupling tube 18 includes a first channel 181 connected to the gas output channel 119 and the gas guiding pipe 16, and a second channel 182 branched from and remaining in communication with the first channel 181 and allowing a part of the high-pressure to be released. More specifically, an inner channel diameter of the second channel 182 affects the releasable amount of the high-pressure gas.
- a deflation control member 183 is disposed in the second channel 182.
- the deflation control member 183 includes a plug body 184 and a through hole 185 disposed on the plug body 184. The aperture size of the through hole 185 determines a pressure release status of the deflation control member 183.
- the deflation control member 183 releases a larger amount of the high-pressure gas and reduces the amount of the high-pressure gas entering the gas guiding pipe 16. Conversely, when the aperture of the through hole 185 is smaller, the deflation control member 183 is incapable of discharging a large amount of the high-pressure gas, such that the amount of the high-pressure gas entering the gas guiding pipe 16 is larger than that when the aperture of the through hole 185 is larger.
- a grinding machine 10 including a grinding machine body 11 and a grinding disc 12 connected to the grinding machine body 11.
- the grinding machine body 11 is provided with a pressure cavity 13 at a position facing the grinding disc 12 and a gas intake pipe 111 corresponding to the pressure cavity 13.
- a pressure release gap 14 in communication with the pressure cavity 13 is formed between the grinding machine body 11 and the grinding disc 12.
- the gas intake pipe 111 induces a high-pressure gas into the pressure cavity 13, which receives an effect of the high-pressure gas to become a positive-pressure environment.
- the high-pressure gas is continually released via the pressure release gap 14 to prohibit external dust from entering the pressure cavity 13.
- the grinding machine 10 is capable of preventing dust from accumulating in the pressure cavity 13 as well as effectively preventing moisture from entering the pressure cavity 13 when the grinding machine 10 is applied for wet grinding.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
- The present invention relates to a grinding machine, and particularly to a grinding machine that forms a positive pressure environment between a grinding machine body and a grinding disc to eliminate invasion of dust and moisture.
- In current grinding machines, associated industrialists commonly provide a dust sucking structure on the grinding machines. The dust sucking structure sucks dust generated during a process of grinding a material under grinding, as disclosed in
TW 439616 CN 1748939 ,US 6,802,766 ,US 7,722,438 ,JP5760892 JP5696488 JP5682410 JP2014217920 JP2014124752 JP2014039975 JP2012210691 EP2479001 ,EP3028811 andEP2611573 patents. - However, in the above implementation method, dust may be inappropriately accumulated on a grinding disc and a transmission member of a power assembly. As a result, friction is constantly produced between the transmission member and dust to cause a temperature rise in the transmission member, which disfavors long-term implementation.
- Further, a grinding environment of the grinding machine is not limited to only dry grinding but also includes wet grinding. If wet grinding is performed using conventional technologies of the above patents, moisture or water, which is not easy to clean, may be drawn by the dust and enter the grinding machine. If the grinding machine is disassembled to allow moisture or water to evaporate each time the grinding machine is used after grinding, more grinding machines need to be purchased in order to use the grinding machines in turn, leading to increased costs. Further, disassembling the grinding machines also causes a waste in working hours. In addition, industries today are gradually evolving into implementation conducted by robots, and working hours of the robots may be reduced if grinding machines installed on the robots need to be disassembled from the robots in the long run.
- It is a primary object of the present invention to solve issues of the susceptibility to effects of a grinding environment and inappropriate accumulation of dust of a conventional dust sucking structure.
- To achieve the above object, the present invention provides a grinding machine including a grinding machine body and a grinding disc connected to the grinding machine body. The grinding machine body is provided with a pressure cavity at a position facing the grinding disc, and a gas intake pipe corresponding to the pressure cavity. A pressure release gap in communication with the pressure cavity is formed between the grinding machine body and the grinding disc. The gas intake pipe induces a high-pressure gas into the pressure cavity. The pressure cavity receives an effect of the high-pressure gas to cause its internal pressure to be greater than the pressure outside the grinding machine body, such that the pressure cavity becomes a positive-pressure environment. The pressure cavity is in communication with the pressure release gap to allow the high-pressure gas to be continually released via the pressure release gap, so as to prohibit external dust from entering the pressure cavity.
- In one embodiment, the gas intake pipe is connected to an external gas source, and receives the high-pressure gas from the external gas source.
- In one embodiment, the grinding machine body includes a host housing and a cover body connected to the host housing. The gas intake pipe is disposed on the cover body, which defines the pressure cavity and has its one side facing the grinding disc appear hollow to allow the high-pressure gas to flow towards the pressure release gap.
- In one embodiment, the cover body includes a first end connected to the host housing and a second end facing the grinding disc. The size of the second end is greater than the size of the first end.
- In one embodiment, the grinding machine body includes a connecting member, which is disposed in the cover body and causes the grinding disc to be linked with a power assembly disposed in the host housing.
- In one embodiment, the grinding machine body includes the host housing and a gas guiding pipe. The host housing includes a cavity for disposing the power assembly, a gas intake channel in communication with the cavity and receiving the high-pressure gas from the external gas source, and a gas output channel in communication with the cavity and discharging the high-pressure gas out of the cavity. The gas guiding pipe has its two ends respectively connected to the gas output channel and the gas intake channel to guide the high-pressure gas into the pressure cavity.
- In one embodiment, the grinding machine body includes a regulating valve connected to the gas output channel and the gas guiding pipe.
- In one embodiment, the grinding machine body includes a coupling tube. The coupling tube includes a first channel connected to the gas output channel and the gas guiding pipe, and a second channel branched from and in communication with the first channel and causing a part of the high-pressure gas to be released.
- In one embodiment, the coupling tube includes a deflation control member disposed in the second channel. The deflation control member includes a plug body and a through hole disposed on the plug body.
- According to the disclosed embodiments of the present invention, the present invention includes following features compared to the prior art. In the present invention, the pressure cavity becomes a positive-pressure environment because of the high-pressure gas, and the high-pressure is caused to be discharged via the pressure release gap, such that not only dust is prohibited from entering the pressure cavity but also the pressure cavity is kept dry. Further, components of the grinding machine disposed in the pressure cavity are provided with better heat dissipation. In addition, while the high-pressure gas is being discharged via the pressure release gap, the high-pressure gas drives the airflow around the grinding machine to further prohibit the dust from entering the pressure cavity.
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Fig. 1 is a structural schematic diagram of a grinding machine according to an embodiment of the present invention; -
Fig. 2 is a partial sectional structural schematic diagram of a grinding machine according to an embodiment of the present invention; -
Fig. 3 is a first schematic diagram of a high-pressure gas in flow according to an embodiment of the present invention; -
Fig. 4 is a second schematic diagram of a high-pressure gas in flow according to an embodiment of the present invention; -
Fig. 5 is a structural schematic diagram of a grinding machine according to another embodiment of the present invention; -
Fig. 6 is a structural schematic diagram of a grinding machine according to another embodiment of the present invention; -
Fig. 7 is a structural schematic diagram of a grinding machine according to another embodiment of the present invention; -
Fig. 8 is a schematic diagram of a high-pressure gas in flow according to an embodiment of the present invention; and -
Fig. 9 is an enlarged partial schematic diagram ofFig. 8 of the present invention. - Details and technical contents of the present invention are given with the accompanying drawings below.
- Referring to
Fig. 1 andFig. 2 , the present invention provides agrinding machine 10, which primarily includes agrinding machine body 11 and agrinding disc 12 connected to thegrinding machine body 11. Thegrinding machine body 11 is provided with apressure cavity 13 at a position facing thegrinding disc 12, and agas intake pipe 111 corresponding to thepressure cavity 13. Thegas intake pipe 111 is in communication with thepressure cavity 13. Further, a lower edge of thegrinding machine body 11 is not closely connected to thegrinding disc 12, so as to form apressure release gap 14 in communication with thepressure cavity 13. More specifically, thegrinding machine body 11 has its one side facing thegrinding disc 12 designed as recessed to form thepressure cavity 13. That is to say, thepressure cavity 13 and thepressure release gap 14 are in fact in communication. Further, in one embodiment, thegrinding machine body 11 includes ahost housing 112 and acover body 113 connected to thehost housing 112. Thecover body 113 is not in close contact with thegrinding disc 12, so as to form thepressure release gap 14. Further, thecover body 113 may appear slightly similar to an umbrella to define thepressure cavity 13, and has its one side facing thegrinding disc 12 appear hollow to cause thepressure cavity 13 to be in direct communication with thepressure release gap 14. Further, thecover body 113 includes afirst end 114 connected to thehost housing 112, and asecond end 115 connected to and facing thegrinding disc 12. In one embodiment, the size of thesecond end 115 is greater than the size of thefirst end 114, as shown inFig. 2 . On the other hand, thegrinding machine body 11 includes a connectingmember 116, which is disposed at thecover body 113 and causes thegrinding disc 12 to be linked with apower assembly 15 disposed in thehost housing 112. Further, the connectingmember 116 is installed on atransmission shaft 151 of thepower assembly 15. When thepower assembly 15 is activated and rotates, thetransmission shaft 151 drives the connectingmember 116 to rotate to further rotate the grindingdisc 12. Further, the connectingmember 116 may be a counterweight to stabilize the rotation of the grindingdisc 12 though counterweight. - The
gas intake pipe 111 of the present invention may be connected to an external gas source (not shown), and induces a high-pressure gas to enter thepressure cavity 13 when the external gas source is activated. At this point, the pressure in thepressure cavity 13 suddenly becomes greater than the pressure outside thepressure cavity 13 due to the high-pressure gas induced. That is too say, the pressure in thepressure cavity 13 is greater than the pressure outside the grindingmachine body 11. As such, thepressure cavity 13 becomes a positive-pressure environment. The high-pressure gas is later continually released via thepressure release gap 14, and a flow of the gas pressure is as shown inFig. 3 . Referring toFig. 4 , when the high-pressure gas exists via thepressure release gap 14, gas around the grindingmachine body 11 is driven by the high-pressure gas to flow along the direction of the high-pressure gas. As a result, the flow of the airflow of the grindingdisc 12 becomes even more obvious to further substantially prohibit dust generated during an operation of the grindingmachine 10 from entering thepressure cavity 13. Further, in the present invention, the high-pressure gas is caused to enter thepressure cavity 13, such that moisture or water seeping into thepressure cavity 13 is blown dry by the high-pressure gas when the grindingmachine 10 performs wet grinding. Thus, thepressure cavity 13 of the grindingmachine 10 can be appropriately kept dry to prevent a part of the components of the grindingmachine 10 from corrosion caused by accumulated moisture or water. Further, through such design of the present invention, the grindingmachine 10 is adaptable to various grinding environments (e.g., wet grinding or dry grinding), so as to reduce the frequency of post-implementation equipment maintenance and to be readily installed to a mechanical arm (not shown). Further, through the above technical solution, thetransmission shaft 151 and nearby structures may be blown by the high-pressure gas during a grinding process, such that thermal exchange may be performed to prevent heat from accumulating on thetransmission shaft 151 and the nearby structures. - Although the grinding
machine 10 implemented by a pneumatic approach is illustrated inFig. 1 as an example, it should be noted that the embodiments of the present invention are not limited to the pneumatic grindingmachine 10, and may be applied to the grindingmachine 10 implemented by an electric approach. - In addition to the circular form depicted in
Fig. 1 to Fig. 4 , the grindingdisc 12 of the present invention may also be implemented in a square form, as shown inFig. 5 . When the grindingdisc 12 is in a square form, implementation concepts are the same and shall be omitted herein. - Referring to
Fig. 6 andFig. 8 , thehost housing 112 includes acavity 117 for disposing thepower assembly 15, angas intake channel 118 connected to thecavity 117 and for receiving the high-pressure gas from the external gas source, and agas output channel 119 in communication with thecavity 117 and for discharging the high-pressure gas out of thecavity 117. Thegas intake channel 118 receives the high-pressure gas into thecavity 117. The high-pressure gas drives thepower assembly 15 to rotate, which further drives the grindingdisc 12 to rotate for grinding. Further, in addition to the foregoing gas intake approach, in one embodiment, the grindingmachine body 11 includes agas guiding pipe 16, which has its two ends respectively connected to thegas output channel 119 and thegas intake pipe 111. Thegas guiding pipe 16 receives the high-pressure gas discharged from thegas output channel 119, and guides the high-pressure gas into thepressure cavity 13. As such, the high-pressure gas is effectively utilized to prevent the high-pressure gas from becoming waste gas after only a one-time operation. - Referring to
Fig.6 , the grindingmachine body 11 may further include a regulatingvalve 17, which is connected between thegas output channel 119 and thegas guiding pipe 16. Through the regulatingvalve 17, the amount of the high-pressure gas entering thepressure cavity 13 through thegas guiding pipe 16 is controlled. Further, there are numerous types of the regulatingvalve 17, and associated details shall be omitted herein. During an application process of the regulatingvalve 17, as shown inFig. 8 , the regulatingvalve 17 may release a part of the high-pressure gas to reduce the amount of the high-pressure gas entering thegas guiding pipe 16. Referring toFig. 7 to Fig. 9 , in one embodiment, the grindingmachine body 11 may further include acoupling tube 18. Thecoupling tube 18 includes afirst channel 181 connected to thegas output channel 119 and thegas guiding pipe 16, and asecond channel 182 branched from and remaining in communication with thefirst channel 181 and allowing a part of the high-pressure to be released. More specifically, an inner channel diameter of thesecond channel 182 affects the releasable amount of the high-pressure gas. In one embodiment, adeflation control member 183 is disposed in thesecond channel 182. Thedeflation control member 183 includes aplug body 184 and a throughhole 185 disposed on theplug body 184. The aperture size of the throughhole 185 determines a pressure release status of thedeflation control member 183. When the aperture of the throughhole 185 is larger, thedeflation control member 183 releases a larger amount of the high-pressure gas and reduces the amount of the high-pressure gas entering thegas guiding pipe 16. Conversely, when the aperture of the throughhole 185 is smaller, thedeflation control member 183 is incapable of discharging a large amount of the high-pressure gas, such that the amount of the high-pressure gas entering thegas guiding pipe 16 is larger than that when the aperture of the throughhole 185 is larger. - In summary there is disclosed a grinding
machine 10 including a grindingmachine body 11 and a grindingdisc 12 connected to the grindingmachine body 11. The grindingmachine body 11 is provided with apressure cavity 13 at a position facing the grindingdisc 12 and agas intake pipe 111 corresponding to thepressure cavity 13. Apressure release gap 14 in communication with thepressure cavity 13 is formed between the grindingmachine body 11 and the grindingdisc 12. Thegas intake pipe 111 induces a high-pressure gas into thepressure cavity 13, which receives an effect of the high-pressure gas to become a positive-pressure environment. The high-pressure gas is continually released via thepressure release gap 14 to prohibit external dust from entering thepressure cavity 13. Thus, the grindingmachine 10 is capable of preventing dust from accumulating in thepressure cavity 13 as well as effectively preventing moisture from entering thepressure cavity 13 when the grindingmachine 10 is applied for wet grinding.
Claims (12)
- A grinding machine (10), comprising a grinding machine body (11) and a grinding disc (12), being characterized that:the grinding machine body (11) is provided with a pressure cavity (13) at a position facing the grinding disc (12) and a gas intake pipe (111) corresponding to the pressure cavity (13), a pressure release gap (14) in communication with the pressure cavity (13) is formed between the grinding machine body (11) and the grinding disc (12), the gas intake pipe (111) induces a high-pressure gas into the pressure cavity (13), the pressure cavity (13) receives an effect of the high-pressure gas to cause a pressure therein to be greater than a pressure outside the grinding machine body (11) such that the pressure cavity (13) becomes a positive-pressure environment, and the pressure cavity (13) is in communication with the pressure release gap (14) to cause the high-pressure gas to be continually released via the pressure release gap (14), thereby prohibiting external dust from entering the pressure cavity (13).
- The grinding machine (10) of claim 1, wherein the gas intake pipe (111) is connected to an external gas source and receives the high-pressure gas from the external gas source.
- The grinding machine (10) of claim 2, wherein the grinding machine body (11) comprises a host housing (112) and a cover body (113) connected to the host housing (112), the gas intake pipe (111) is disposed on the cover body (113), and the cover body (113) defines the pressure cavity (13) and has its one side facing the grinding disc (12) appear hollow to allow the high-pressure gas to flow towards the pressure release gap (14).
- The grinding machine (10) of claim 3, wherein the cover body (113) comprises a first end (114) connected to the host housing (112) and a second end (115) facing the grinding disc (12), and a size of the second end (115) is greater than a size of the first end (114).
- The grinding machine (10) of claim 3 or 4, wherein the grinding machine body (11) comprises a connecting member (116), which is disposed at the cover body (113) and causes the grinding disc (12) to be linked with a power assembly (15) disposed in the host housing (112).
- The grinding machine (10) of one of the preceding claims, wherein the grinding machine body (11) comprises a host housing (112) and a gas guiding pipe (16), the host housing (112) comprises a cavity (117) for disposing a power assembly (15), a gas intake channel (118) in communication with the cavity (117) and for receiving the high-pressure gas from an external gas source, and a gas output channel (119) in communication with the cavity (117) and for discharging the high-pressure gas out of the cavity (117), and two ends of the gas guiding pipe (16) are respectively connected to the gas output channel (119) and the gas intake pipe (111) to guide the high-pressure gas into the pressure cavity (13).
- The grinding machine (10) of claim 6, wherein the grinding machine body (11) comprises a regulating valve (17) connected between the gas output channel (119) and the gas guiding pipe (16).
- The grinding machine (10) of claim 6 or 7, wherein the grinding machine body (11) comprises a coupling tube (18), which comprises a first channel (181) connected to the gas output channel (119) and the gas guiding pipe (16) and a second channel (182) branched from and in communication with the first channel (181) and allowing a part of the high-pressure gas to be released.
- The grinding machine (10) of claim 8, wherein the coupling tube (18) comprises a deflation control member (183) disposed in the second channel (182), and the deflation control member (183) comprises a plug body (184) and a through hole (185) disposed on the plug body (184).
- The grinding machine (10) of one of the claims 6-9, wherein the grinding machine body (11) comprises a cover body (113) connected to the host housing (112), the gas intake pipe (111) is disposed on the cover body (113), and the cover body (113) defines the pressure cavity (13) and has its one side facing the grinding disc (12) appear hollow to allow the high-pressure gas to flow towards the pressure release gap (14).
- The grinding machine (10) of claim 10, wherein the cover body (113) comprises a first end (114) connected to the host housing (112) and a second end (115) facing the grinding disc (12), and a size of the second end (115) is greater than a size of the first end (114).
- The grinding machine (10) of the claims 6-11, wherein the grinding machine body (11) comprises a connecting member (116), which is disposed at a cover body (113) and causes the grinding disc (12) to be linked with the power assembly (15) disposed in the host housing (112).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17178101.6A EP3421173B8 (en) | 2017-06-27 | 2017-06-27 | Grinding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17178101.6A EP3421173B8 (en) | 2017-06-27 | 2017-06-27 | Grinding machine |
Publications (3)
Publication Number | Publication Date |
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EP3421173A1 true EP3421173A1 (en) | 2019-01-02 |
EP3421173B1 EP3421173B1 (en) | 2022-06-08 |
EP3421173B8 EP3421173B8 (en) | 2022-08-17 |
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Family Applications (1)
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EP17178101.6A Active EP3421173B8 (en) | 2017-06-27 | 2017-06-27 | Grinding machine |
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EP (1) | EP3421173B8 (en) |
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Also Published As
Publication number | Publication date |
---|---|
EP3421173B8 (en) | 2022-08-17 |
EP3421173B1 (en) | 2022-06-08 |
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