WO2003080482A1 - Chip discharge system - Google Patents
Chip discharge system Download PDFInfo
- Publication number
- WO2003080482A1 WO2003080482A1 PCT/US2003/006789 US0306789W WO03080482A1 WO 2003080482 A1 WO2003080482 A1 WO 2003080482A1 US 0306789 W US0306789 W US 0306789W WO 03080482 A1 WO03080482 A1 WO 03080482A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- fluid dispersing
- arrangement
- discharge system
- chip discharge
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/0057—Devices for removing chips outside the working area
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the machine tool discharges coolant and chips of metal or resin of assorted sizes.
- Common metal that are cut and/or machined include aluminum, brass, copper, iron, magnesium, manganese, stainless steel, etc.
- a coolant such as cutting oil or lubricant dissolved in water is typically used to cool the cutting or grinding instrument of the machine tool, and/or to cool the workpiece.
- the coolant is also used to extend the life of the cutting or grinding instrument of the machine tool.
- the dirty coolant that contains the metal or resin chips is discharged from the machine tool to be later treated by a chip discharge system, whereby only the chips contained in the dirty coolant are separated from the coolant and collected.
- a chip discharge conveyor system is used to separate chips from the coolant.
- the chip discharge conveyor system typically includes a hinged belt conveyor designed to remove only chips from the dirty coolant discharged from the machine tool and to then discharge such chips out from a treatment tank while clean coolant filtered by a filtration drum is discharged in into another tank or receptacle.
- On such chip discharge conveyor system is disclosed in Japanese Unexamined Patent Application 2000-202215 published July 25, 2000 entitled “Turning Carrier System Filter Device", which is incorporated herein by reference.
- FIGURE 8 discloses a conventional chip discharge system, comprising a dirty coolant treatment tank 2 wherein dirty coolant D containing chips that are discharged from a machine tool M is charged, and an endless hinged belt 4 provided in the dirty coolant treatment tank 2 wherein the hinged belt circulates.
- the dirty coolant tank 2 comprises a series of adjacent metal plates 2a, 2b, 2c, 2d and 2e, which are in close proximity to and separated from the endless hinged belt 4.
- the hinged belt 4 scoops up chips from the dirty coolant treatment tank 2 and transports the scooped chips along a partition plate 6 to a chip discharge portion B to discharge the chips at a downturn belt section located at the top of the hinged belt 4, wherein the discharged chips are discharged into a chip collection box F or the like.
- the downturn belt section located at the top of the hinged belt 4 accommodates both a driving sprocket 4d to transmit power to the hinged belt 4 and a drive motor.
- a cylindrical member 5 is provided at a tail end portion A of hinged belt 4, whereby the hinged belt 4 makes an upward turn from the bottom and serves as a return of belt 4b to the top where the hinged belt serves as a transport to belt 4a.
- the dirty coolant tank has a filtration drum 8 provided with a filtration medium 8 a which filters coolant retained in the dirty coolant tank to discharge the filter coolant from the tank 2.
- Filtered coolant C is discharged through a coolant discharge opening 8b into a clean coolant tank E, which is located outside of the dirty coolant treatment tank.
- the filtered coolant is collected for reuse and/or disposal. Chips which do not pass through the filtration drum 8 and remain in tank 2 are scooped up by the hinged belt 4 and discharged from the chip discharge portion B. Since the filtration medium 8a comprising the filtration drum 8 progressively clogs, a fluid dispersing means 9 is used to clean the filtration medium.
- the fluid dispersing means is designed to spray cleaning fluid onto filtration drum 8 to cause chips adhering to a surface of the filtration medium 8a to be blown off the filtration drum.
- FIGURE 9 shows a structure of the fluid dispersing means 9 used in a conventional chip discharge system. As illustrated in FIGURE 9, cleaning fluid supplied from a supply pipe 9a to a fluid discharge pipe 9b (which is called a spray bar) is blown out as dispersing flow S in a fan-like shape from a plurality of fluid dispersing holes 9c, each of which is provided with a nozzle to disperse and spray cleaning fluid in a fan shaped pattern.
- the fluid dispersing means used in such a conventional chip discharge system typically uses filter coolant discharged from clean coolant storage tank E.
- the filtered coolant typically includes fine chips. These fine chips tend to gradually accumulate in the fan-shaped nozzles of fluid dispersing holes 9c and inside fluid discharge pipe 9b. This accumulation of the fine chips eventually impairs the flow of clean coolant from pipe 9b and through holes or nozzles 9c, thus impairing or preventing the function as a fluid dispersing means from being performed, i.e. cleaning chips from filtration drum 8.
- the fan-shaped nozzles need to be finely fabricated to accomplish uniformly-spreading fan-shaped flow of the coolant to be sprayed out from the fluid dispersing means; however, these finely fabricated nozzles increased production costs of the fluid dispensing means and the chip discharge system.
- a device such as a valve and/or an orifice which is used to adjust the flow characteristics of the coolant through the fluid dispersing mean such as pressure and/or volume to be supplied from the fluid discharge pipe is needs to be additionally provided, which devices also results in an increase in the number of parts of the system and increased costs.
- a chip discharge system to separately discharge chips contained in dirty coolant discharged from a machine tool
- the chip discharge system has a fluid dispersing means to remove chips remaining in the system
- the fluid dispersing means comprises a fluid discharge pipe with at least one fluid dispersing hole, and a deflector plate to at least partially deflect and/or disperse flow from one or more the fluid dispersing hole or holes.
- One or more of the deflector plates are typically secured to the fluid discharge pipe; however, this is not required.
- the one or more of the deflector plates can be designed to deflect the fluid flow at a uniform or at different angles from the dispersing holes.
- a chip discharge system that includes a fluid dispersing means having a deflector plate wherein an angle and/or a location of the deflector plate can be changed in relation to a location of the fluid dispersing hole and a direction of fluid sprayed out from the fluid dispersing hole, whereby deflection and dispersion of flow sprayed out from the fluid dispersing hole can be adjusted.
- a chip discharge system which has no particular restriction for the location or the like for the fluid dispersing means to be provided, as long as the fluid dispersing means is provided as a fluid dispersing means to remove chips retained in the chip discharge system, such as a fluid dispersing means provided in the chip discharge system to prevent a filtration medium from clogging, or a fluid dispersing means to be provided to prevent chips from adhering and precipitating onto a dirty coolant discharge path.
- a chip discharge system that includes a fluid dispersing means that resists clogging.
- the fluid dispersing means includes one or more fluid dispersing holes on a lateral face of a fluid discharge pipe, and a deflector plate is provided to deflect and disperse flow sprayed from the fluid dispersing hole. Such action by the deflector plate results in reduced clogging in the fluid dispersing means, thus the chip discharge system can be operated for a long period without special maintenance being required.
- Still another and/or alternative object of the present invention is to provide a chip discharge system whereby the chip discharge system has a fluid dispersing means includes a deflector plate to deflect and disperse flow from the fluid dispersing hole or holes.
- Still a further and/or alternative object of the present invention is to provide a chip discharge system that includes a fluid dispersing means having a deflector plate wherein an angle and/or a location of the deflector plate can be changed in relation to a location of the fluid dispersing hole.
- Still yet a further and/or alternative object of the present invention is to provide a chip discharge system that inhibits or prevents chips from adhering and precipitating onto a dirty coolant discharge path.
- Another and/or alternative object of the present invention is to provide a chip discharge system whereby the chip discharge system can be operated for a long period without special maintenance being required.
- FIGURES 2 and 2a are an enlarged perspective view of the fluid dispersing means and its cross-sectional view according to the present invention
- FIGURES 3a-c are enlarged cross-sectional views of the fluid dispersing means that illustrate various locations of a deflector plate for the fluid dispersing means and the condition of the dispersing flow;
- FIGURES 4a and 4b are enlarged cross-sectional views of the fluid dispersing means that illustrate the relation between the size of a deflector plate for the fluid dispersing means and the condition of dispersing flow;
- FIGURE 5 is a perspective view of a discharge system of a second embodiment according to the present invention.
- FIGURE 6 is a cross-sectional view of a discharge system of a third embodiment according to the present invention.
- FIGURE 7 is a side view of a discharge system of a fourth embodiment according to the present invention.
- FIGURE 8 is a cross-sectional view of a conventional prior art chip discharge system.
- FIGURE 9 is a perspective view of fluid dispersing means for a conventional prior art chip discharge system.
- Chip discharge system 1 includes a dirty coolant treatment tank 2 wherein dirty or used coolant D containing chips K (e.g., metal chips, graphite chips, etc.).
- the dirty coolant is typically discharged fluid from a machine tool M used to cut, form and/or shape metal materials; however, the dirty coolant can be from other sources.
- the dirty coolant typically includes water, lubricating oil and/or cutting oil and chips of material that were cut, form and/or shape by the machine tool.
- hinged belt 4 scoops up the chips from the dirty coolant treatment tank and transports the scooped chips along a partition plate 6 to a chip discharge portion B to discharge the chips at a downturn belt section located at the top of the hinged belt 4. At this point, the chips are discharged into a chip collection box F or the like.
- the downturn belt section located at the top of the hinged belt 4 typically includes both a driving sprocket 4d to transmit power to the hinged belt 4 and a drive motor to cause the hinge belt to continuously travel along metal plates 2a, 2b, 2c, 2d and 2e.
- a cylindrical member 5 is provided at a conveyor tail end portion A of hinged belt 4, whereby the hinged belt 4 makes an upward turn from the bottom and serves as a return of belt 4b to belt portion 4a to again travel to the chip discharge portion B.
- the fluid dispersing means is designed to spray clean or filtered fluid onto filtration drum 8 to cause chips adhering to a surface of the filtration medium 8 a to be blown off or removed from the filtration drum.
- the fluid dispersing means typically filtered coolant discharged from clean coolant storage tank E; however, other and/or additional sources coolant can be used.
- fluid dispersing means includes a fluid discharge pipe 9b denotes a fluid discharge pipe (which is called a spray bar), and cleaning fluid W is supplied to the fluid discharge pipe via a supply pipe (which is not shown).
- Cleaning fluid W is typically filtered coolant that has been discharged into clean coolant storage tank E; however, other or additional sources can be used.
- a plurality of fluid dispersing holes 9c are provided, whereby the cleaning fluid is sprayed out.
- fluid dispersing holes 9c can merely be standard holes formed by simple drilling process of the like.
- the size of the fluid dispersing hole 9c is not specifically restricted as long as the hole is sufficiently larger than the size of solid substances contained in the cleaning fluid (e.g., metal chip fines). This design allows for a simpler and more cost effective design as compared with past design as illustrated in FIGURE 2.
- the size of the fluid dispersing holes 9c can also be sized and configured (e.g., circular cross-sectional shape as opposed to a prior art elliptical cross sectional shape) so as to reduce the incidence of clogging of the fluid dispersing holes.
- FIGURES 3a-c and 4a-b illustrate various dimensions of the deflector plate and the relation between the location and the deflection and dispersion of dispersing flow. As can be appreciated, many other configurations can be used. As a comparison between FIGURE 3 a and FIGURE 3b illustrates, when the distances LI between the deflector plate 9e and the fluid discharge opening 9c are kept substantially the same while making the incident angles greater (incident angle ⁇ incident angle ⁇ ), the momentum of deflected and dispersed flow S is reduced.
- the fluid dispersing means 9 used in the chip discharge system includes a purging means 9d positioned at the tip of the fluid discharge pipe 9b.
- the purging means can be located in other or additional locations. It can further be appreciated that more than one purging means can be used on the fluid discharge pipe.
- the purging means is designed to drain out cleaning fluid which is not sprayed through the fluid dispensing holes.
- the purging means 9d includes a cone-shaped nozzle whose tip is open. As can be appreciated, other shapes for the nozzle can be used. By adjusting the bore size of the • nozzle, dispersing pressure of the cleaning fluid sprayed out from the fluid dispersing holes 9c can be adjusted.
- purging means 9d is directly connected to the fluid discharge pipe 9b; however, the purging means can be provided separately from the fluid dispersing means 9 via piping, a hose, etc..
- an orifice and/or a valve can be used for the purging means as an alternative or in additional to the nozzle described above.
- the valve can be manually operated, semi-manually operated, or automatically operated (e.g., automatically open at certain time periods, automatically open when a certain pressure level occurs, etc.).
- FIGURE 5 is a perspective view of a chip discharge system 1 that includes a dirty coolant treatment tank 2 having a drain hole 10 provided on a side wall thereof to discharge dirty coolant D from the tank.
- the discharged dirty coolant passes through a inclined slope 11 and is collected at a separating screen box 12.
- the separating screen box is designed to collect the larger sized chips that pass through the drain holes.
- the fluid dispersing means 9 is provided to remove chips adhering to and remaining on the slope 11.
- a deflector plate 9e is positioned on return 11 and is designed to direct fluid onto the slope 11 which is being discharged from fluid discharge pipe 9b and sprayed through fluid dispensing holes 9c. The deflector plate downwardly deflects the sprayed coolant onto slope 11.
- the structure and function of the fluid dispersing means is similar to the fluid dispersing means disclosed in FIGURES 1-4, thus will not be further described.
- FIGURE 6 is a cross-sectional view of a chip discharge system 30 comprising a dirty coolant treatment tank 32. Positioned in the dirty coolant treatment tank is a rotating filtration drum 31 that receives dirty coolant D which is discharged from a machine tool or the like. The dirty coolant is filtered by a filtration medium 31a on filtration drum 31, and filtered coolant C is discharged through a coolant discharge opening 31b provided on a side wall of filtration drum 31. The filtered coolant is collected in an external clean coolant tank 34 for recycling, reuse and/or disposal.
- Chips K that are contained in dirty coolant D are trapped by on a surface of the filtration medium 31a of filtration drum 31 and scooped up by the filtration drum.
- the chips are subsequently scraped off the filtration drum by a rotating brush 33 which contacts or is positioned closely adjacent to the surface of the filtration drum 31.
- the rotating brush causes the chips on the filtration drum to be discharged from the dirty coolant tank 32.
- Arrows described as Rl and R2 in FIGURE 6 denote rotation directions of the filtration drum 31 and the rotating brush 33, respectively.
- SD and SC denote the fluid levels of dirty coolant in the dirty coolant treatment tank 32 and of filtered coolant in the filtration drum 31, respectively.
- a fluid dispersing means 39 is provided inside filtration drum 31 to remove fine chips intruded into the inside of the filtration medium 31a and/or chips caught by a surface of the filtration medium 3 la by dispersing fluid so as to inhibit or prevent the filtration medium 31a (e.g., screen, wire mesh, fabric mesh, metal and/or fabric filter material, etc.) from clogging.
- the structure and function of the fluid dispersing means 39 are similar to the fluid dispersing means described in FIGURES 1-4, thus will not be further described.
- FIGURE 7 illustrates a side view of a chip discharge system 40.
- the dirty coolant D containing chips is discharged from a machine tool M onto an inclined slope 41.
- the discharged dirty coolant is collected in a separating screen box 42, wherein the chips in dirty coolant D are caught and the filtered coolant is collected in a coolant tank 44 for recycling, reuse and/or disposal.
- a fluid dispersing means 49 is provided at upstream of the slope 41 to remove chips adhering to and retained on the surface of the slope.
- the structure and function of the fluid dispersing means is similar to the fluid dispersing means described with respect to FIGURE 1-4.
- the fluid dispersing means can be provided to inhibit or prevent a drum-like filtration medium provided in the dirty coolant tank as explained in the first and third embodiments from becoming clogged, and it can also be used to inhibit or prevent chips from adhering to a dirty coolant discharge path as shown in the second and fourth embodiments.
- the fluid dispersing means can be provided at a variety of locations on a chip discharge system wherein chips remain.
- the invention comprises a fluid dispersing means whereby a fluid dispersing hole is provided on a lateral face of a fluid discharge pipe, and a deflector plate is provided to deflect and disperse flow sprayed from the fluid dispersing hole, clogging in the fluid dispersing means is restrained from developing and, furthermore, the chip discharge system can be operated for a long period without special maintenance being required. It should also be noted that deflection and dispersion of the flow can be adjusted only by changing a location of the deflector plate, whereby chips can be efficiently removed.
- a purging means is provided at an end of the fluid discharge pipe, whereby fluid which is not sprayed out from the fluid dispersing hole is rapidly drained and clogging at the fluid dispersing means is better eliminated. Additionally, maintenance activities to be performed for the chip discharge system are further reduced.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03723683A EP1494942A4 (en) | 2002-03-19 | 2003-03-07 | Chip discharge system |
AU2003230598A AU2003230598A1 (en) | 2002-03-19 | 2003-03-07 | Chip discharge system |
MXPA04009021A MXPA04009021A (en) | 2002-03-19 | 2003-03-07 | Chip discharge system. |
CA2479331A CA2479331C (en) | 2002-03-19 | 2003-03-07 | Chip discharge system |
US10/941,191 US7364032B2 (en) | 2002-03-19 | 2004-09-15 | Chip discharge system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-76694 | 2002-03-19 | ||
JP2002076694A JP2003266271A (en) | 2002-03-19 | 2002-03-19 | Chip discharging device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/941,191 Continuation US7364032B2 (en) | 2002-03-19 | 2004-09-15 | Chip discharge system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003080482A1 true WO2003080482A1 (en) | 2003-10-02 |
Family
ID=28449070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/006789 WO2003080482A1 (en) | 2002-03-19 | 2003-03-07 | Chip discharge system |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1494942A4 (en) |
JP (1) | JP2003266271A (en) |
AU (1) | AU2003230598A1 (en) |
CA (1) | CA2479331C (en) |
MX (1) | MXPA04009021A (en) |
WO (1) | WO2003080482A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007289798A (en) * | 2006-04-20 | 2007-11-08 | Creator:Kk | Apparatus for cleaning muddy water |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4544060A (en) * | 1982-12-28 | 1985-10-01 | Enomoto Industry Co., Ltd. | Chip transporting conveyor |
US4860883A (en) * | 1986-11-03 | 1989-08-29 | B.A.T. Cigarettenfabriken Gmbh | Apparatus for cleaning of an endless conveyor belt |
US4897202A (en) * | 1988-01-25 | 1990-01-30 | Pure-Chem Products, Inc. | Process and apparatus for recovery and recycling conveyor lubricants |
US6357576B1 (en) * | 1999-04-14 | 2002-03-19 | Enomoto Industry Co., Ltd | Chip conveyors and apparatus for separating and collecting chips |
-
2002
- 2002-03-19 JP JP2002076694A patent/JP2003266271A/en active Pending
-
2003
- 2003-03-07 EP EP03723683A patent/EP1494942A4/en not_active Withdrawn
- 2003-03-07 WO PCT/US2003/006789 patent/WO2003080482A1/en active Application Filing
- 2003-03-07 CA CA2479331A patent/CA2479331C/en not_active Expired - Fee Related
- 2003-03-07 AU AU2003230598A patent/AU2003230598A1/en not_active Abandoned
- 2003-03-07 MX MXPA04009021A patent/MXPA04009021A/en active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4544060A (en) * | 1982-12-28 | 1985-10-01 | Enomoto Industry Co., Ltd. | Chip transporting conveyor |
US4860883A (en) * | 1986-11-03 | 1989-08-29 | B.A.T. Cigarettenfabriken Gmbh | Apparatus for cleaning of an endless conveyor belt |
US4897202A (en) * | 1988-01-25 | 1990-01-30 | Pure-Chem Products, Inc. | Process and apparatus for recovery and recycling conveyor lubricants |
US6357576B1 (en) * | 1999-04-14 | 2002-03-19 | Enomoto Industry Co., Ltd | Chip conveyors and apparatus for separating and collecting chips |
Non-Patent Citations (1)
Title |
---|
See also references of EP1494942A4 * |
Also Published As
Publication number | Publication date |
---|---|
CA2479331A1 (en) | 2003-10-02 |
EP1494942A4 (en) | 2007-03-14 |
MXPA04009021A (en) | 2005-06-08 |
AU2003230598A1 (en) | 2003-10-08 |
CA2479331C (en) | 2010-05-18 |
JP2003266271A (en) | 2003-09-24 |
EP1494942A1 (en) | 2005-01-12 |
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