EP3922426A1 - Fraiseuse permettant d'enlever de la matière d'une surface et appareil portant ladite fraiseuse - Google Patents

Fraiseuse permettant d'enlever de la matière d'une surface et appareil portant ladite fraiseuse Download PDF

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Publication number
EP3922426A1
EP3922426A1 EP20179090.4A EP20179090A EP3922426A1 EP 3922426 A1 EP3922426 A1 EP 3922426A1 EP 20179090 A EP20179090 A EP 20179090A EP 3922426 A1 EP3922426 A1 EP 3922426A1
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EP
European Patent Office
Prior art keywords
milling
cover
milling machine
machine according
drum
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.)
Pending
Application number
EP20179090.4A
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German (de)
English (en)
Inventor
Fredy von Flüe
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.)
Siprotool AG
Original Assignee
Siprotool AG
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.)
Filing date
Publication date
Application filed by Siprotool AG filed Critical Siprotool AG
Priority to EP20179090.4A priority Critical patent/EP3922426A1/fr
Publication of EP3922426A1 publication Critical patent/EP3922426A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/183—Hand tools, e.g. portable, motor driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
    • B28D7/02—Accessories specially adapted for use with machines or devices of the preceding groups for removing or laying dust, e.g. by spraying liquids; for cooling work

Definitions

  • the invention relates to a milling machine for removing material from a surface in webs and to a device carrying the milling machine.
  • a wall milling machine with a milling drum can be used to remove plaster, tile adhesive, filler, paint or generally its coating from the floor, wall or ceiling of a room.
  • a wall milling machine can also be used when it comes to leveling a surface such as a wall or ceiling.
  • the milling drum of the wall milling machine has teeth made of hard metal or diamond on its outer surface. As the milling drum rotates, the teeth mill the material from the surface. This creates material particles that need to be sucked off. Particularly if the coating is contaminated with asbestos, for example, it must be ensured that as few particles as possible can escape into the environment. The health burden for the operating personnel and the contamination of the environment are to be kept as low as possible.
  • Such a wall milling machine is sold by the company SC-Technologie AG, 8500 Fettfeld under the name San istsfräse SF-125. Furthermore, from the publication DE 10 2011 003 010 A1 known a milling machine for removing materials applied to the wall or ceiling.
  • the milling machine comprises a cylindrical milling drum which is provided with a multiplicity of cutting tools and which is driven in rotation by a motor.
  • the two wall milling machines mentioned above can be connected to an extraction system, but due to their design, they still emit a relatively large amount of dust into the environment during milling. In particular, if the dust is contaminated, this can lead to considerable problems.
  • One object of the invention is to provide a milling machine for removing material from a surface in webs, as well as a device carrying the milling machine, in which or in which the material particles produced during milling can be extracted as much as possible and contamination of the surroundings by the material particles produced is minimized .
  • the object is achieved by a milling machine for removing material from a surface in webs, with the features specified in claim 1.
  • the milling machine according to the invention for removing material from a surface in webs has an electric drive and a milling drum that can be driven with it.
  • the milling drum is used to remove the material from the Surface along a milling path.
  • a cover that can be moved in the direction of the milling depth is provided in order to direct the air-material particle flow generated by the milling drum to the suction opening.
  • the milling machine also has a lowering mechanism in order to be able to move the cover in the direction of the milling depth.
  • the device according to the invention comprises a guide which carries the milling cutter described above and along which the milling cutter can be moved back and forth.
  • the lowering mechanism is designed as a pivoting device. This is easy to manufacture, requires little maintenance and has a long service life.
  • the lowering mechanism has a spring in order to press the cover in the direction of the milling depth. This helps to keep the gap between the milling path and the cover as small as possible.
  • the width of the cover is chosen so that, when the cover protrudes into the milling path, the cover closes as tightly as possible with the edges of the milling path with respect to the material particles.
  • a frame is provided to which the cover is attached.
  • the frame can be pivoted relative to the roller housing. This has the advantage that the milling depth can be adjusted individually.
  • the cover is arranged in such a way that it meets the milling path at an acute angle. This reduces wear on the cover.
  • the cover is coated with ceramic.
  • the cover can also have an elastic coating. This also allows the wear on the cover to be reduced.
  • the roller housing has an elastic coating or an impact protection plate. As a result, wear and tear on the roller housing caused by abrasion can be reduced.
  • an adjusting device for setting the milling depth can be provided in the milling cutter according to the invention.
  • a further cover is advantageously provided in the milling machine according to the invention.
  • the cover is arranged between the milling drum and the further cover.
  • the milling drum is rotatably mounted on both sides.
  • two running rollers are provided, one running roller being arranged in front of and the other running roller behind the milling roller in the direction of movement.
  • a pivot bearing is provided for rotating the milling cutter. This means that the milling machine can be operated horizontally and vertically.
  • the length of the guide can be adjusted. This has the advantage that the device can be used in rooms of different heights.
  • the device according to the invention can have a suction system and a suction line, via which the suction system is connected to the milling machine.
  • FIG 1 a possible embodiment of the inventive milling machine 1 is shown in a three-dimensional view.
  • Figure 2 is the milling machine 1 in side view, in Figure 3 from the front, in Figure 4 in plan view and in Figure 5 shown from below.
  • Figure 6 shows the milling machine 1 without milling drum 3.
  • the milling machine 1 serves to remove material from a surface 50 in webs.
  • the milling machine 1 is guided along a milling path 50.2 for this purpose.
  • milling path 50.2 is understood to mean the path to be milled or the path that has already been milled.
  • the milling machine 1 has an electric drive 2 with an electric motor, which is designed as a brushed or preferably as a brushless motor.
  • the electric motor is arranged in the housing 2.2, can be connected to the power supply system via an electrical connection 2.4 and can be switched on and off via a switch 2.3.
  • the motor can preferably be operated on the 230 V mains.
  • the drive 2 can include a gear on the output side in order to reduce the speed generated by the electric motor to a suitable speed.
  • the electric motor or the gearbox is connected on the output side via a drive shaft 4 to a milling drum 3 in order to drive it.
  • the milling drum 3 serves to remove the material from the surface 50 along the milling path 50.2. For this purpose, it is equipped with teeth 3.1 on its outer surface (see FIGS. 11 to 13). When the milling drum 3 rotates about its axis of rotation 5, the teeth 3.1 mill the material along the milling path 5.2 from the surface 5, so that a cutout 50.1 is created at this point. In Figure 2 this is indicated.
  • the milling drum 3 is arranged within a drum housing 6.
  • the roller housing 6 is also referred to as a suction housing.
  • the drum housing 6 has a suction connector 7 with a suction opening 25.
  • a suction device can be connected to the suction nozzle 7.
  • the embodiment shown of the milling machine 1 is located in the lower region of the milling machine 1, an assembly which, as shown in FIG Figures 7 to 10 shown, can be formed.
  • the assembly comprises a frame 13 with a first side part 13.1, a second side part 13.2, a front part 13.3 and a rear cover 16.
  • a cover 15 is movably arranged between the front part 13.3 and the rear cover 16.
  • a lowering mechanism 22 is provided.
  • the lowering mechanism 22 is designed as a pivot mechanism.
  • the cover 15 is fastened to one end of a swivel arm 22. 1, which is mounted by means of a bearing 18 and can be rotated about a swivel axis 19.
  • the cover 15 can thus be moved up and down in the direction of the milling depth T.
  • a spring 14 designed as a tension spring can be attached to the other end of the swivel arm 20.1. With their help, the cover 15 can be pressed down onto the milling path 50.2 via the swivel arm 20.1.
  • a baffle plate 26 can be provided in order to prevent the spring 14 from being worn out by the material particles, which may be quite abrasive.
  • the material particles which may be quite abrasive.
  • a baffle plate 26 can be provided in order to prevent the spring 14 from being worn out by the material particles, which may be quite abrasive.
  • the material particles which may be quite abrasive.
  • the lowering mechanism 22 can have a linear guide in order to be able to move the cover 15 up and down in the direction of the milling depth T.
  • the cover 15 is behind the milling drum 3, viewed in the direction of movement.
  • the milling drum 3 produces a cutout 50.1 of depth T.
  • the cover 15 is permanently pressed onto the milling path 50.2, following the contour the milling path 50.2 and is thus pressed onto the bottom of the milling 50.1.
  • the cover 15 thus covers the opening which is created by the milling 50.1. In this way, it is ensured that the gap between the roller housing 6 or the frame 13 and the surface 50 is minimized.
  • the milling machine 1 can, however, also be pulled or pushed over the surface 50 from left to right.
  • the cover 15 is located in front of the milling drum 3, seen in the direction of movement, and thus in that area of the milling path 50.2 that has not yet been milled.
  • the cover 15 is permanently pressed onto the milling path 50.2, so that it follows the contour of the milling path 50.2. Since the milling path 50.2 has not yet been milled out in the area of the cover 15, the cover 15 is not lowered that far, but nevertheless rests on the milling path 50.2 and thus covers a possible gap between the roller housing 6 or the frame 13 and the surface 50 .
  • the cover 15 ensures that the entire air-material particle flow generated by the milling drum 1 is guided to the suction opening 25 and no or virtually no milling dust escapes into the environment.
  • the cover 15 is preferably so wide that it just finds space in the cutout 50.1 without it bumping into the edges of the cutout 50.1 or tilting there.
  • the milling machine 1 can thus be moved smoothly over the surface 50 to be milled.
  • the width B2 of the cover 15 is therefore preferably selected such that it is just so much smaller than the width B1 of the milling path 50.2 that the cover 15 can be accommodated in the cutout 50.1.
  • the two gaps, which are located between the outer edges of the cover 15 and the adjoining side edges of the milled recess 50.1, are preferably to be designed so small that the milled material particles do not pass through these gaps.
  • the cover 15 can be designed as a plate. It can be made of steel or hard metal, for example. If necessary, the cover 15 can be coated with ceramic or have an elastic coating. The elastic coating can be rubber, for example. Such a coating increases the service life of the cover 15 and is particularly helpful when the milling machine 1 is used to mill off material that is particularly abrasive.
  • the longitudinal axis of the cover 15 is advantageously aligned parallel to the longitudinal axis 5 of the milling drum 3.
  • the cover 15 is arranged in such a way that it meets the milling path 50.1 at an acute angle ⁇ (see FIG Figure 7 ).
  • the air-material particle flow thus hits the cover 15 at a relatively flat angle and is slowed less than when it hits the cover 15 at a right angle.
  • the rear cover 16 can be rigidly connected to the side parts 13.1 and 13.2 of the frame 13 in order to give the frame 13 the necessary stability.
  • the two side parts 13.1 and 13.2 can each have a recess 13.21 into which the cover 16 can be inserted.
  • a first roller 8 and a second roller 9 are arranged at the two ends of the frame 13.
  • the two rollers 8 and 9 are mounted in the bores 13.12, 13.13, 13.22 and 13.23.
  • the two rollers 8 and 9 rest on the surface 50 to be milled, so that the milling drum 3 follows the contour of the surface 50 and a constant milling depth T is guaranteed.
  • rollers or sliding shoes can also be used.
  • the roller housing 6 can have an elastic coating or an impact protection plate in particular where the air / material particle flow hits the housing wall. This allows the service life of the milling machine 1 to be increased.
  • the roller housing 6 is designed on one long side in such a way that the drive 2 can be attached to it. On the other, opposite longitudinal side, the roller housing 6 can have a receptacle for a bearing 24 for the milling roller 3. This has the advantage that the milling drum 3 is mounted on both sides, so that the torque that acts on the drive shaft 4 in the area of the transmission is reduced. This in turn reduces wear and tear and increases the service life of the entire milling machine 1.
  • the drum housing 6 can have a bearing cover 21 which is screwed onto the side wall of the drum housing 6. After the bearing cover 21 has been removed, the bearing 24 and the milling drum 3 can be pulled off the drive shaft 4 and removed from the side of the drum housing 6.
  • the frame 13 is mounted pivotably with respect to the roller housing 6.
  • the two side parts 13.1 and 13.2 of the frame 13 each have a fork-shaped receptacle 13.14 and 13.24, respectively, which rotatably support the axes 6.1 and 6.2 provided on the roller housing 6.
  • the frame 13 can thus be pivoted about a pivot axis 20 with respect to the roller housing 6.
  • the frame 13 can be clamped to the roller housing 6 with the aid of a first clamping lever 10 and a second clamping lever 11.
  • the mechanism provided for setting the milling depth T is referred to as an adjusting device 23.
  • FIG 11 a possible embodiment of the milling drum 3 arranged in the milling machine 1 according to the invention is shown in a side view.
  • Figure 12 is the milling drum 3 from the front and in Figure 13 shown in a three-dimensional view.
  • the milling drum 3 has a receptacle 3.2 or hub for the drive shaft 4 and teeth 3.1 made of hard metal or diamond on its outer surface.
  • the teeth 3.1 can be laterally spaced and offset from one another.
  • the two outermost teeth define the milling width B1.
  • the milling machine 1 can be attached to a milling stand.
  • a first possible embodiment of a milling stand 30 is shown in a three-dimensional view.
  • the milling stand 30 is also referred to below as a device for milling.
  • the device 30 comprises a guide 31 to which the milling machine 1 is attached and with which it can be moved up and down.
  • the guide 31 can be equipped with an electric drive 35 with which the milling machine 1 can be moved along the guide 31. With the aid of two handles 34, the entire device 30 can be moved and held in position.
  • the device 30 is particularly suitable for milling walls.
  • the device 30 is moved by the operating personnel to the wall to be milled and then the milling machine 1 is pressed against the wall.
  • the milling machine 1 can then be moved up and down via a control 36 located on the device 30 in order to mill the wall, milling path by milling path.
  • rollers 32 are provided at the bottom of the device.
  • the device 30 can also be equipped with a pivot bearing 33 for rotating the milling cutter 1.
  • the milling machine 1 can thus be aligned horizontally or vertically.
  • Figure 14 shows the milling machine 1 in the vertical orientation.
  • the milling paths 50.2 run horizontally, so that the wall can be milled off in horizontally extending paths. If, on the other hand, the milling machine 1 is oriented vertically, the milling paths 50.2 run vertically and the wall can be milled off in vertically extending paths.
  • FIG Figure 15 A second possible embodiment of a milling stand 130 is shown in FIG Figure 15 in side view, in Figure 16 from the front and in Figure 17 shown in top view.
  • Figure 18 shows the milling stand 130 in a three-dimensional view.
  • the device 130 is particularly suitable for milling ceilings.
  • the device 30 is moved to the desired position by the operating personnel.
  • the device 130 has rollers 32 for this purpose.
  • the milling machine 1 is pressed against the ceiling with the two handles 134.
  • the two handles 134 are connected to the milling machine 1 via deflection levers 137.1, 137.2 and 137.3.
  • the milling machine 1 can then be moved back and forth along the ceiling in order to mill off the ceiling, milling path by milling path.
  • there is a corresponding switch 136 on the device 130 In order to be able to switch the milling machine 1 on and off, there is a corresponding switch 136 on the device 130.
  • the material particles milled off by the milling machine 1 can be sucked into a suction system 200 via a suction line 135.
  • the milling machine 1 has elongated rollers 8 'and 9'.
  • the milling width B1 is preferably between 60 mm and 400 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Milling Processes (AREA)
EP20179090.4A 2020-06-09 2020-06-09 Fraiseuse permettant d'enlever de la matière d'une surface et appareil portant ladite fraiseuse Pending EP3922426A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20179090.4A EP3922426A1 (fr) 2020-06-09 2020-06-09 Fraiseuse permettant d'enlever de la matière d'une surface et appareil portant ladite fraiseuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20179090.4A EP3922426A1 (fr) 2020-06-09 2020-06-09 Fraiseuse permettant d'enlever de la matière d'une surface et appareil portant ladite fraiseuse

Publications (1)

Publication Number Publication Date
EP3922426A1 true EP3922426A1 (fr) 2021-12-15

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EP20179090.4A Pending EP3922426A1 (fr) 2020-06-09 2020-06-09 Fraiseuse permettant d'enlever de la matière d'une surface et appareil portant ladite fraiseuse

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0734821A2 (fr) * 1995-03-30 1996-10-02 HILTI Aktiengesellschaft Dispositif pour rainurer une paroi
DE29604780U1 (de) * 1996-03-01 1997-07-03 Robert Bosch Gmbh, 70469 Stuttgart Mauernutfräse
FR2913627A1 (fr) * 2007-03-16 2008-09-19 Dev Sarl Ag Outillage de rabotage destine a l'enlevement des peintures et enduits a base d'amiante ou de plomb
DE102011003010A1 (de) 2010-03-09 2011-12-15 Vladimir Liptak Vorrichtung zum Bearbeiten einer Wand oder Decke
EP2548697A2 (fr) * 2011-07-19 2013-01-23 Flex-Elektrowerkzeuge GmbH Dispositif porte-outil, combinaison de dispositif porte-outil et d'outil et machine-outil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0734821A2 (fr) * 1995-03-30 1996-10-02 HILTI Aktiengesellschaft Dispositif pour rainurer une paroi
DE29604780U1 (de) * 1996-03-01 1997-07-03 Robert Bosch Gmbh, 70469 Stuttgart Mauernutfräse
FR2913627A1 (fr) * 2007-03-16 2008-09-19 Dev Sarl Ag Outillage de rabotage destine a l'enlevement des peintures et enduits a base d'amiante ou de plomb
DE102011003010A1 (de) 2010-03-09 2011-12-15 Vladimir Liptak Vorrichtung zum Bearbeiten einer Wand oder Decke
EP2548697A2 (fr) * 2011-07-19 2013-01-23 Flex-Elektrowerkzeuge GmbH Dispositif porte-outil, combinaison de dispositif porte-outil et d'outil et machine-outil

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