EP2476512A1 - Bandabblasvorrichtung - Google Patents

Bandabblasvorrichtung Download PDF

Info

Publication number: EP2476512A1
Authority: EP; European Patent Office
Prior art keywords: nozzles; nozzle; rows; grinding; belt
Prior art date: 2011-01-18
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

Application number

EP12151364A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP2476512B1 (de

Inventor

Martin Settele

Thomas Bettermann

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Weeke Bohrsysteme GmbH

Original Assignee

Buetfering Schleiftechnik GmbH

Priority date (The priority date 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 date listed.)

2011-01-18

Filing date

2012-01-17

Publication date

2012-07-18

2012-01-17 Application filed by Buetfering Schleiftechnik GmbH filed Critical Buetfering Schleiftechnik GmbH

2012-07-18 Publication of EP2476512A1 publication Critical patent/EP2476512A1/de

2014-04-30 Application granted granted Critical

2014-04-30 Publication of EP2476512B1 publication Critical patent/EP2476512B1/de

Status Not-in-force legal-status Critical Current

2032-01-17 Anticipated expiration legal-status Critical

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Classifications

- 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
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- 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
- B24B55/08—Dust extraction equipment on grinding or polishing machines specially designed for belt grinding machines

Definitions

the invention relates to a Bandabblasvorraum for a grinding belt in a processing machine, which is intended for the machining of workpieces, which are preferably made of wood, wood-like materials and / or metal.
blowing devices are individually controllable, so that each for a blowing device or a group of blowing devices, a control valve and a sensor is provided which detects the contour of the workpiece to be machined and provides information to a control unit, according to the contour of the individual blowing devices or a Group of adjacent blowing devices drives.
the present invention is based on the problem that the cleaning effect of some of the conventional blow-off devices are indeed sufficient for the cleaning of a workpiece, since there are usually smooth surfaces, but provide only insufficient performance for the cleaning of an abrasive belt. Although other conventional blow-off devices can adequately clean an abrasive belt, these devices have very high mechanical wear due to the high operating frequency.
the individual rows of nozzles are preferably operated sequentially one after the other. As a result, the cleaning result of the abrasive belt is further improved.
the nozzle assembly is preferably made in a continuous casting of aluminum or plastic, so that the lines and interfaces more preferably all can be configured integrally with the nozzles.
the nozzle arrangement preferably the Entire Bandabblasvoriques, movably arranged. This movement again preferably takes place in a plane parallel to the running direction of the grinding belt, more preferably in a direction parallel or perpendicular to the running direction. The movement is preferably carried out at a frequency of 0.1 Hz to 1.5 Hz, but preferably at 0.5 Hz. This further increases the cleaning effect, in particular together with a sequential control of the nozzle rows.
the nozzles of the individual rows of nozzles are each offset so that the staggered nozzle rows are substantially on a straight line connecting. That is, the offset distance of each row of nozzles to the next row of nozzles is always constant, preferably about 30 mm. Again, an improved cleaning effect is achieved by the arrangement of the obliquely offset rows of nozzles.
the nozzles of one or more nozzle rows are preferably inclined obliquely to the grinding belt, in particular to the side.
a grinding unit or the belt blow-off device is preferably used in a processing machine, which also has a conveyor for workpieces.
FIG. 1 is a processing machine to see a conveyor 5 with a conveyor belt 6, on which a workpiece 4 is located, a rotating grinding unit 2 with and a Bandabblasvorraum 1.
the workpiece 4 is transported by conveyor 5 on the conveyor belt 6 to the grinding unit 2 and processed there by this grinding belt 3.
the revolving grinding unit 2 in the present embodiment is a grinding belt 3, since this is a commonly used grinding unit 2.
Other moving grinding units are included in the invention.
the grinding dust produced during grinding then settles both on the workpiece 4 and on the grinding belt 3.
this belt blowing device is in principle suitable for being used also for the cleaning of workpieces. In such a case, the design of the Bandabblasvoroplasty relative to the grinding unit, the funded workpiece to bezieher.
the tape blowing apparatus 1 has a nozzle assembly 8 and a control device (not shown).
a Bandabblasvorraum 1 can be seen, which includes three nozzle rows 10.
a nozzle row 10 consists of a continuous casting profile with a plurality of individual nozzles.
the term "nozzles" in the simplest form also includes mere holes or holes in the continuous casting profile through which the air is expelled.
the nozzles are additional elements designed specifically for directional ejection of the air.
Such nozzles are exemplary in the FIGS. 5 and 6 to recognize.
special nozzles are threaded into a continuous casting profile containing compressed air lines connecting the nozzles 12 together.
the nozzles 12 are screwed into receptacles 9 provided for this purpose.
the individual nozzles 12 need not be screwed into a continuous casting profile, they can also be connected with a simple plug connection, welded or be formed integrally with the continuous casting profile.
the continuous cast profile itself is again preferably made of aluminum, a steel or a plastic.
the individual rows of nozzles 10 may each be designed as individual continuous casting profiles, or may be formed in one piece, so that two or more rows of nozzles are formed in a single continuous casting profile.
the individual rows of nozzles 10 can preferably be stackable in a modular manner, so that further rows of nozzles 10 can be easily attached to the existing nozzle arrangement 8.
a nozzle arrangement 8 comprises at least two rows of nozzles 10, but preferably three, four or even more, which are arranged one above the other, ie offset in the z-direction. More preferably, the rows of nozzles 10 are offset in the x-direction to each other by a distance v, the ideally 25th mm to 35 mm, more preferably 30 mm.
the distance v is preferably constant, so that the individual nozzle rows 10 are offset from one another by the same distance and the corresponding nozzles 12 of the different groups G1 G2, G3 lie on a straight line.
the nozzle arrangement 8 has one or more interfaces 11 via which compressed air is introduced from an external compressed air line or a compressed air suction device (not shown).
the compressed air introduction is preferably determined by a solenoid valve unit which controls the air supply in the various compressed air lines by opening and closing the corresponding valves.
compressed air is the preferred fluid for use with the present invention
various fluids or gases best suited to the particular purpose and environment may be used.
humid air may also be used which, for example, may additionally have a humidity of from 20% to 80%, allowing the blown-off dust to bind in the moisture and therefore be easier to remove.
the nozzle assembly 8 is arranged so that it is directed to the sanding belt 3, more specifically, that the nozzles 12 of the nozzle rows 10 are directed to the sanding belt 3, ie the ejected air can hit the sanding belt 3.
FIG. 5 An embodiment is shown in which the orientation of the nozzles 12 is formed perpendicular to the abrasive belt 3. However, an orientation is preferred in which the nozzles 12 are aligned obliquely to the grinding belt 3 (see FIG. 6 ).
Slanting may theoretically mean in any direction, for example, in one direction in or against the direction of travel of the abrasive belt 3 during operation, which corresponds to alignment in a yz plane, but is preferably oriented in the xy plane, as in FIG FIG. 6 is shown.
the inclination of the nozzles 12 is preferably in a range of about 25 ° to 55 ° to the side, preferably 30 ° to 40 ° and more preferably about 35 ° to a straight orientation, as in FIG. 5 you can see.
the nozzles 12 may be inclined in the same direction both in the x-direction and in the y-direction.
the inclination of the nozzles 12 is preferably made to be alternate, so that the individual nozzle groups G1, G2, G3 are inclined in opposite directions.
the nozzle assembly 8 or the entire Bandabblasvorraum 1 is further preferably also mounted linearly movable.
the movement is preferably in a plane E, which extends parallel to the grinding belt 3, in a preferred embodiment, the movement is transverse or parallel to Running direction L in the plane E.
the movement takes place in a frequency of 0.1 Hz to 1.5 Hz, preferably at 0.5 Hz.
the movement is generated, for example, by an oscillating cylinder (not shown), which controls the nozzle arrangement or even only the nozzle rows (the Continuous casting profile) can move and is stored even outside the arrangement, or outside the nozzle rows.
this oscillating cylinder has a coupling which is arranged between the cylinder and the respective moving element and can compensate for mechanical stresses.
the control of the individual nozzle rows 10 or the individual nozzles 12 is generally independent of each other.
a valve on the Interface can be provided which can cut off the supply of compressed air into the pressure lines of the nozzle rows 10, so that the nozzles 12 of the corresponding row of nozzles 10 do not expel air.
each individual nozzle is provided with a valve, but preferably the line of the entire row of nozzles 10 is provided with only one valve and so all the nozzles 12 of a row of nozzles 10 are controlled simultaneously.
stop valves which can be provided in the pressure lines, so that only a part of a row of nozzles 10 from a respective group can blow out air (eg only the left half or the left third).
nozzle assembly 8 it can also be provided on both sides of the nozzle assembly 8, an interface for the supply of compressed air, so that both sides can be controlled and the left or right half each individually blow air.
this approach is not on “halves.” limited, but the stop valves, the nozzle rows each divide into thirds or quarters. In the extreme case, each nozzle can be controlled individually.
a fairly simple realization of a stop valve could be single blind plugs inserted into a nozzle hole instead of a nozzle can be used and then block the compressed air line, so that the air flow is interrupted.
blind plugs can be made, for example, of rubber and in a form which is adapted to the respective pressure line.
a web can be provided around the nozzles and / or between the nozzles or the nozzle rows Surface of the nozzle assembly on which the nozzles are arranged, lifts, so that the nozzles are protected.
this web between the nozzle rows protrude vertically, so that an oblique orientation of the nozzle as in FIG. 6 can blow out the air without being obstructed by the bridge.
the web is preferably slightly higher than the nozzles protrude.
FIGS. 3 and 4 show preferred activations of the nozzle rows 10.
the individual nozzle groups have a preset actuation time t1, t2, t3 within one cycle.
One cycle describes the activation of the groups G1, G2, G3, which repeats itself again and again.
the drive timing marks the beginning of the ejection of air from the nozzles of the corresponding group.
the duration for which the respective group is activated, ie air inflates, can be adjusted.
Examples of a nozzle arrangement are shown which shows three groups whose activation time, that is to say the time duration for which a group blows out air, is preferably distributed uniformly over one cycle.
nozzles are also preferably driven uniformly over one cycle. Basically, one can say that in the preferred embodiment, one cycle with the drive time of the first driven group (here G1 begins, and ends with the switching off of the last controlled group (here G3).
the control for the in FIG. 3 shown embodiment described with three rows of nozzles.
the solenoid valve of group 1 is driven for a certain time, preferably one turn of the belt 3 (for example 1 sec at a belt revolution of 2 m / sec and a belt length of 2 m), and blown out air from group 1.
group 2 is switched on for the same time.
group 3 is switched on for the same time.
group 3 is activated and the process repeated.
the procedure is analogous, with the first group being switched on again when the last group is switched off.
the subsequent group could not be activated directly after the preceding group was switched off, but simultaneously with the shutdown.
the operation of the individual groups can also overlap.
the control can generally be done in any order. For 3 groups, this may only lead to a reversal of the control, but in four groups the order can also be G1-G3-G2-G4 or G1-G2-G4-G3.
the activation of different groups can also take place simultaneously. For example, if there are six rows of nozzles 10, group 1 and group 4 would blow out simultaneously for the six groups, group 2 and group 5, and group 3 and group 6.
the length of the control can be adjusted via an operating terminal.
a cycle whose duration can be set separately and preferably as a function of the grinding belt length and / or the grinding belt speed is assumed to be 100% or 1.
the length of the nozzle operation of the individual groups G1, G2, G3 is set to 33.3% and 1/3, respectively.
group 2 switches on simultaneously with the disconnection of group 1.
an overlap of the control of the individual group can be set, so that, for example, group 1 is switched off only after half of the Zeitimoulses of group 2, while simultaneously or directly after group 3 is switched on.
FIG. 4 is an example of a setting of 66%, or 2/3 shown.
This overlap can be adjusted until all nozzle rows 10 run at 100%, or 1 at the same time. As a result, the maximum cleaning effect is deployed. With three groups and an operating time of a group of less than 33.3%, or 1/3, there is a short break between the groups. However, this can already be sufficient for a light cleaning of, for example, very smooth surfaces and thus further reduce the air consumption. In an exemplary embodiment, there are 5 stages to which the drive time of 20%, 33%, 50%, 66% and 100% are incrementally assigned from 1 to 5. A stepless adjustment is also possible.
the time period that a group is driven is also set as a function of the grinding belt speed. As a result, a shorter pulse length for the individual groups could be sufficient given an increasing grinding belt speed.
the nozzle assembly 8 itself may also be designed to be movable, as already mentioned above.
an oscillation of the nozzle assembly 8 can be much lower than in the prior art.
a suction device 13 is provided around the nozzle assembly 8, which can absorb and carry away the dust which is blown by the abrasive belt 3.

EP20120151364 2011-01-18 2012-01-17 Bandabblasvorrichtung Not-in-force EP2476512B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE201110002808 DE102011002808A1 (de)	2011-01-18	2011-01-18	Bandabblasvorrichtung

Publications (2)

Publication Number	Publication Date
EP2476512A1 true EP2476512A1 (de)	2012-07-18
EP2476512B1 EP2476512B1 (de)	2014-04-30

Family

ID=45554486

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP20120151364 Not-in-force EP2476512B1 (de)	2011-01-18	2012-01-17	Bandabblasvorrichtung

Country Status (2)

Country	Link
EP (1)	EP2476512B1 (ar)
DE (1)	DE102011002808A1 (ar)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN105397598A (zh) *	2015-12-07	2016-03-16	重庆艾布特家具有限公司	新型磨平设备
EP3006162A1 (de) *	2014-10-09	2016-04-13	Georg Weber	Vorrichtung zum ausblasen eines umlaufenden schleifbands einer bandschleifmaschine
CN109333266A (zh) *	2018-10-28	2019-02-15	昆山锲恒精密组件科技有限公司	一种镁铝合金研磨装置及研磨工艺
CN117399225A (zh) *	2023-12-13	2024-01-16	沧州融通管道装备有限公司	一种节能型保温管道防腐加工设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102016209267A1 (de)	2016-05-30	2017-11-30	Schaeffler Technologies AG & Co. KG	Gehäuse
DE102016209519A1 (de)	2016-06-01	2017-12-07	Schaeffler Technologies AG & Co. KG	Steckverbindung
DE102017117715A1 (de) *	2017-08-04	2019-02-07	Homag Gmbh	Absaugungsvorrichtung mit optimierter Staubabsaugung
DE102020112995A1 (de)	2020-05-13	2021-11-18	Haver & Boecker Ohg	Reinigungsvorrichtung und Verfahren zum Reinigen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH405975A (de)	1964-01-23	1966-01-15	Rusterholz Erich	Vorrichtung zum Abblasen des Schleifstaubes von Schleifkörpern, insbesondere Schleifbändern
DE4232830C1 (de)	1992-09-30	1993-10-21	Georg Weber	Vorrichtung zum Entfernen von Schleifstaub von Werkstücken in Schleifmaschinen
EP0724933A1 (de)	1995-01-11	1996-08-07	Jürgen Dipl.-Ing. Heesemann	Abstrahlvorrichtung für eine Bandschleifmaschine

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Publication number	Priority date	Publication date	Assignee	Title
JPS57201171A (en) *	1981-06-02	1982-12-09	Meinan Mach Works Inc	Polishing device
US5616069A (en) *	1995-12-19	1997-04-01	Micron Technology, Inc.	Directional spray pad scrubber
US6669538B2 (en) *	2000-02-24	2003-12-30	Applied Materials Inc	Pad cleaning for a CMP system

2011
- 2011-01-18 DE DE201110002808 patent/DE102011002808A1/de not_active Withdrawn
2012
- 2012-01-17 EP EP20120151364 patent/EP2476512B1/de not_active Not-in-force

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH405975A (de)	1964-01-23	1966-01-15	Rusterholz Erich	Vorrichtung zum Abblasen des Schleifstaubes von Schleifkörpern, insbesondere Schleifbändern
DE4232830C1 (de)	1992-09-30	1993-10-21	Georg Weber	Vorrichtung zum Entfernen von Schleifstaub von Werkstücken in Schleifmaschinen
EP0724933A1 (de)	1995-01-11	1996-08-07	Jürgen Dipl.-Ing. Heesemann	Abstrahlvorrichtung für eine Bandschleifmaschine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3006162A1 (de) *	2014-10-09	2016-04-13	Georg Weber	Vorrichtung zum ausblasen eines umlaufenden schleifbands einer bandschleifmaschine
CN105397598A (zh) *	2015-12-07	2016-03-16	重庆艾布特家具有限公司	新型磨平设备
CN109333266A (zh) *	2018-10-28	2019-02-15	昆山锲恒精密组件科技有限公司	一种镁铝合金研磨装置及研磨工艺
CN117399225A (zh) *	2023-12-13	2024-01-16	沧州融通管道装备有限公司	一种节能型保温管道防腐加工设备
CN117399225B (zh) *	2023-12-13	2024-02-09	沧州融通管道装备有限公司	一种节能型保温管道防腐加工设备

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Publication number	Publication date
DE102011002808A1 (de)	2012-07-19
EP2476512B1 (de)	2014-04-30

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