EP3727746A1 - Mechanism for removing an abrasive disk from an abrasive tool - Google Patents
Mechanism for removing an abrasive disk from an abrasive toolInfo
- Publication number
- EP3727746A1 EP3727746A1 EP18829825.1A EP18829825A EP3727746A1 EP 3727746 A1 EP3727746 A1 EP 3727746A1 EP 18829825 A EP18829825 A EP 18829825A EP 3727746 A1 EP3727746 A1 EP 3727746A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- sheet
- sanding
- support plate
- function
- 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.)
- Withdrawn
Links
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 210000002445 nipple Anatomy 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 9
- 230000004888 barrier function Effects 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- YAFQFNOUYXZVPZ-UHFFFAOYSA-N liproxstatin-1 Chemical compound ClC1=CC=CC(CNC=2C3(CCNCC3)NC3=CC=CC=C3N=2)=C1 YAFQFNOUYXZVPZ-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
- B24D9/085—Devices for mounting sheets on a backing plate
Definitions
- the invention relates to a device for removing an abrasive sheet according to the preamble of claim 1.
- abrasive tools each having a backing pad and an abrasive sheet attached thereto are moved in a bital, rotary or vibratory manner.
- the used abrasive sheets are different depending on the application requirement, both in terms of their dimension as well as their elasticities.
- the abrasive sheet has an abrasive layer with an abrasive grain and opposite to a bonding layer, usually formed as a Velcro layer or as an adhesive layer, which is adhesively held on the correspondingly oriented support plate in the sense of a fixation.
- a bonding layer usually formed as a Velcro layer or as an adhesive layer, which is adhesively held on the correspondingly oriented support plate in the sense of a fixation.
- the abrasive sheet is grasped by hand, for which purpose the edge region of the abrasive sheet protrudes beyond the backing sheet, i.e., the diameter of the abrasive sheet is greater than that of the backing sheet.
- the abrasive sheets fall many times uncontrollably on objects and the ground, often for reasons of convenience, resulting in a complex detachment of the abrasive sheets when they adhere to objects, and requires a collection.
- a new sanding sheet is often placed on the used abrasive sheet still adhering to the backing sheet, thereby uncontrollably affecting the sanding result.
- the invention has for its object to provide a device with a trouble-free, disability-free, automatic change of Schleifblät tern is possible.
- This release device can be designed differently. For example, it consists of a pincer-shaped gripper, which engages under clamping the overlying Randbreich the abrasive sheet and by means of a Relativbe movement to the backing pad or the grinding tool, the abrasive sheet from
- the removal device may also be designed as a sucker, with egg ner in function of the working surface of the abrasive sheet fitting suction pad, by means of which, also in a relative movement to the backing pad, the abrasive sheet is released from the compound with it.
- the suction force must be greater than the adhesive force with which the abrasive sheet is held on the backing pad.
- the removal device is installed on a work table, which from the work area of grinding in a set-up area can be moved, especially to dispose of the used and removed abrasive sheets as well as the grinding dust accumulating during detachment. It is also conceivable, instead of the work table, to move the removal device itself accordingly, where appropriate means such as slides or the like are provided with a drive for this purpose.
- the housing has an insertion opening for the support plate, by means of which the support plate can be brought into the effective region of the removal device arranged in the housing.
- this insertion is so far sealed dust-tight, as they indeed allowed a free passage for the backing pad, but prevents leakage of currency rend of the detachment incurred grinding dust.
- the release device in Ge housing can be placed vertically or horizontally.
- Said nipple may be formed as a flat suction, bellows suction or oval suction with a flexible sealing lip, which conforms sealingly against the working surface of the sanding sheet.
- the diameter of the nipple is smaller than that of the sanding sheet, so that an edge projection of the sanding sheet against the backing pad is no longer neces sary, but the diameter of the sanding sheet can correspond to that of the backing plate.
- the relative movement of the support plate to the removal device can thereby follow that either the support plate to the removal device or the Ablö se owned done so far rigidly positioned support plate.
- the suction power i. the necessary vacuum is regulated in a coordinate-dependent manner by detection, for example by means of a laser, by means of a mechanical sensor or by a light barrier.
- this or the grinding tool which is part of the backing pad, moved back out of the housing and, for example, to a removable device in which the backing pad is equipped with a new sanding sheet.
- the nipple can briefly be subjected to air pressure.
- grinding dust adhering to the sealing lip of the nipple can be eliminated by sweeping a stripper, for example in the form of a brush, over the sealing lip, this stripper simultaneously removing the sanding sheet and cleaning the sealing lip in the case of a vertical arrangement of the detaching device.
- Abrasive tools whose support plates perform an orbital or eccentric movement, can persist in interruption of the drive in an undefined posi tion, which is uncritical for detachment by means of a sucker, as this always attacks in the center of the abrasive sheet.
- a clamping device forming the removal device is expediently placed vertically, wherein the clamping device may be attached to a spring plunger, can be compensated by the possible positional deviations of the abrasive sheet from.
- a nipple is at a stop of the support plate in undefined position, an orientation relative to the clamping device required, for which above the removal device can be positioned from a straightening station for the backing plate.
- Achieving the maximum capacity of the collection container can be informed by a visual, audible or electrical signal or by an electronic message that is issued by the said computer, a Whyper son, so that the filled collection container either emptied or replaced by a new collection container can.
- the consumption of abrasive sheets per work piece, working shift or time span can be determined and reported by the computer, which contributes to a continuous improvement of the work process.
- maintenance tasks or maintenance measures for example the change of the nipple or the clamping device due to wear, can be detected via the consumption of abrasive sheets.
- the working area and the setting area are spatially separated.
- the separation of the set-up area from the work area can be done by a protective fence, which is provided with doors for accessing the work area.
- the robots and other equipment required for grinding operations are preferably switched off in their function or go to a basic position, so that the work area can be accessed by an operator si cher.
- the required units are networked or individually controlled by a higher-level system controller.
- Fig. 1 shows a device according to the invention in a perspective
- Fig. 2 shows a detail of the device in a perspective
- 3 and 4 each show a detail of the device in a side view.
- This release device 5 acts in function on the abrasive sheet 3, e.g. by means of a clamping device 8 or a nipple 7, of which in each case a detail in FIGS. 3 and 4 is shown.
- the abrasive sheet 3 has an adhesive surface, with which it is held on the backing plate 2, wherein the adhesion is achieved for example by means of Velcro layers. It is also conceivable to form the adhesive surface of the sanding sheet 3 in such a smooth-surfaced manner that the sanding sheet 3 can be sucked in by means of a vacuum suction device in a sanding disc of the sanding tool 1.
- the housing 4 is provided with an insertion opening 10 through which in the example of the backing pad 2 with adherent abrasive sheet 3 in the example in the vertical Rich tion in the effective range of the detaching device 5 is performed.
- the schematic illustration of the release device 5 is shown in the form of the nipple 7, with a, as shown in FIG.
- a cleaning brush 6 is provided, which sweeps over the sealing lip 1 1 and thereby removes the overlying dust.
- FIG. 4 Another variant of the detaching device 5 can be seen in Fig. 4 in a schematic partial view part.
- This detachment device 5 is designed as a clamping device 8, with two pliers like each other movable clamping legs 9, by means of which the abrasive sheet 3 is clamped to a relative to the support plate 2 radially projecting edge, wherein in a relative movement of the Klemmvor device 8 for backing pad 2, the sanding sheet 3 from the connection with the support plate 2 triggers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017130799.0A DE102017130799A1 (en) | 2017-12-20 | 2017-12-20 | Device for removing an abrasive sheet from a grinding tool |
PCT/EP2018/085928 WO2019121973A1 (en) | 2017-12-20 | 2018-12-19 | Mechanism for removing an abrasive disk from an abrasive tool |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3727746A1 true EP3727746A1 (en) | 2020-10-28 |
Family
ID=64949271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18829825.1A Withdrawn EP3727746A1 (en) | 2017-12-20 | 2018-12-19 | Mechanism for removing an abrasive disk from an abrasive tool |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3727746A1 (en) |
DE (1) | DE102017130799A1 (en) |
WO (1) | WO2019121973A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3430856C2 (en) * | 1984-08-22 | 1987-05-14 | Bayerische Motoren Werke AG, 8000 München | System for automatic grinding of surfaces |
GB2235399B (en) * | 1989-08-23 | 1993-07-21 | Rolls Royce Plc | Finishing tool active element removal |
FR2999107B1 (en) * | 2012-12-10 | 2015-01-09 | Univ Nantes | SANDING DEVICE COMPRISING ABRASIVE DISC CHANGE MEANS |
EP2759371B1 (en) * | 2013-01-28 | 2017-01-18 | JOT Automation Oy | Method for automatically replacing disc tools |
DE202013101858U1 (en) * | 2013-04-29 | 2013-05-17 | Sps Holding Gmbh | Plant for grinding surfaces |
US10532444B2 (en) * | 2014-02-20 | 2020-01-14 | Fabrica Machinale S.R.L. | Apparartus for changing an abrasive sheet in an abrading machine |
-
2017
- 2017-12-20 DE DE102017130799.0A patent/DE102017130799A1/en not_active Ceased
-
2018
- 2018-12-19 EP EP18829825.1A patent/EP3727746A1/en not_active Withdrawn
- 2018-12-19 WO PCT/EP2018/085928 patent/WO2019121973A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2019121973A1 (en) | 2019-06-27 |
DE102017130799A1 (en) | 2019-06-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3439825B1 (en) | Changing station and method for the automatic changing of abrasives | |
DE202013101858U1 (en) | Plant for grinding surfaces | |
EP2842689B1 (en) | Device and method for replacing a grinding wheel | |
EP2830828B1 (en) | Method for the multi-stage grinding of workpieces | |
EP3411183B1 (en) | Device for automatically changing grinding discs | |
EP2957362B1 (en) | Sheet metal working machine with a chip suction device and method for detecting a malfunction in the chip suction device | |
AT512464B1 (en) | APPENDIX FOR GRINDING SURFACES | |
DE102013221319A1 (en) | Automatic change of grinding / polishing wheels for the treatment of body components | |
DE102017114728B3 (en) | Method for mutual separation of two workpiece parts of a plate-shaped material and gripping device for a handling device and handling device of a processing machine | |
DE102017108191A1 (en) | Method for partially grinding a surface and grinding device | |
DE102017130805A1 (en) | Apparatus for replacing a polishing pad | |
WO2014195245A2 (en) | Machining device and machining method | |
DE102015107470A1 (en) | Method and device for removing a workpiece with an uneven or contoured surface section from a processing machine | |
DE202017006214U1 (en) | Cleaning polishing device | |
EP3727746A1 (en) | Mechanism for removing an abrasive disk from an abrasive tool | |
WO2008080688A1 (en) | Hand-held machine tool | |
WO2018029181A1 (en) | Sanding apparatus | |
EP3969224B1 (en) | Orbital grinding machine having a braking device | |
WO2022028869A1 (en) | Apparatus for conveying viscous material | |
DE202016106358U1 (en) | Grinding device and grinding system | |
DE102018122139A1 (en) | Method and removal device for removing workpieces from a processing table | |
EP3697567B1 (en) | Extraction system for grinding tool with radial disc brush | |
DE102015112566A1 (en) | Component handling apparatus, method for conveying components and system | |
WO2019121977A1 (en) | Device for loading a sanding tool | |
DE102022127707B3 (en) | CHANGE STATION FOR AUTOMATICALLY CHANGING ABRASIVES |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200313 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20230713 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20231124 |