EP0110228A2 - Cabine de grenaillage et son mode d'utilisation - Google Patents

Cabine de grenaillage et son mode d'utilisation Download PDF

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Publication number
EP0110228A2
EP0110228A2 EP83111363A EP83111363A EP0110228A2 EP 0110228 A2 EP0110228 A2 EP 0110228A2 EP 83111363 A EP83111363 A EP 83111363A EP 83111363 A EP83111363 A EP 83111363A EP 0110228 A2 EP0110228 A2 EP 0110228A2
Authority
EP
European Patent Office
Prior art keywords
blasting
blasting chamber
chamber housing
chamber according
workpiece holder
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Withdrawn
Application number
EP83111363A
Other languages
German (de)
English (en)
Other versions
EP0110228A3 (fr
Inventor
Werner Hunziker
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0110228A2 publication Critical patent/EP0110228A2/fr
Publication of EP0110228A3 publication Critical patent/EP0110228A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants

Definitions

  • the present invention relates to a blasting chamber according to the preamble of claim 1.
  • blasting chambers of blasting systems regardless of whether the blasting material consists of small drum-compatible parts or larger non-drum-compatible parts, there are means which bring the parts to be blasted into the area of the blasting cone and turn and turn it in order to achieve a uniform blasting pattern .
  • blasting systems for blasting non-drumable i.e. Larger parts must be transferred to the parts by hand or with a handling device.
  • Drum-compatible parts can be brought into or removed from the blasting chamber by means of funnels, slides or the like.
  • Blasting systems for non-drum-capable parts therefore have the disadvantage that they either require an operator for the input and removal of the parts or a correspondingly operating handling device. This disadvantage causes a greater design effort and / or a larger space requirement.
  • the present invention has as its object a blasting chamber of the type mentioned in the introduction to improve that, with little design effort, non-drum-capable parts can be mechanically taken over from the feeder, brought into the blasting chamber and delivered to a removal line.
  • the means additionally take on the function of the handling device previously required for input and removal.
  • the space saved is optimal if the agents are stored in the blasting chamber housing.
  • the blasting chamber is designed as a structural unit and is provided with connections for a feed line and a return line for connection to a spatially distant blasting agent preparation.
  • This embodiment has the advantage that the blasting chamber, the actual processing area, can be made very small, which is particularly advantageous if the operation is downstream of an injection molding machine or a press for the production of injection molding or pressed parts in each production line of blasting is to be carried out.
  • an intermediate stacking before or after blasting can be omitted in numerous applications.
  • a further possibility for mechanizing the blasting operation within the manufacturing process is achieved in that the blasting chamber housing is movably supported at least with reference to one of the three spatial axes. As a result, the takeover point for the part to be blasted can be spatially separated from its delivery point.
  • the invention also makes it possible to blast parts from separate production lines with a single blasting chamber. If the parts of the individual production lines are of very different shapes, the workpiece holder is preferably designed as a mesh screen basket which can be closed with a lid.
  • the mesh screen basket also offers the advantage that drum-compatible parts can be blasted with the device according to the invention.
  • the means can also be used as a handling device for an additional operation, e.g. the workpieces are made of rubber and must be immersed in a container with liquid nitrogen before blasting.
  • the use according to the invention enables the abrasive preparation, the abrasive depot and the dedusting system to be a central supply away from the production lines set up and operate one or more blasting chambers via flexible hoses.
  • flexible hoses it is also easily possible to change the location of the blasting chamber within the production flow if necessary.
  • the blasting system shown in FIG. 1 essentially consists of a blasting chamber 1 and a blasting agent preparation 2, each of which is designed as an independent structural unit and through hose lines. 3 for the Blasting agent supply or the blasting agent return flow are connected to each other.
  • the flexible hose lines 3 make it possible to set up the blasting chamber 1 at a desired radius around the blasting agent preparation 2 at any desired location.
  • the blasting agent preparation 2 has a high-pressure blower 4 and a blasting agent depot 5 under conveying pressure, from which the blasting agent reaches the blasting agent feed line 3a via blocking members 6 and 7.
  • the backflow of the blasting agent from the blasting chamber 1 takes place via the return line 3b with a shut-off passage 8.
  • the shut-off elements 6 to 8 serve to connect the blasting agent preparation 2 and the blasting chamber 1, i.e. interrupt the supply of blasting media and compressed air when the blasting chamber is opened.
  • the steel medium passes from the return line 3b via a cyclone 9 onto a vibrating screen 11 into a vacuum chamber 10 connected on the suction side to the high-pressure blower 4, on which the blasting medium is separated from fine and coarse particles.
  • the abrasive passes through a rotary valve 12 into a storage container 5.
  • the dust-containing air entering the vacuum chamber 10 from the cyclone 9 is sucked off via a line 14 through a filter device 13 and fed cleanly via a line 15 to the suction side of the high-pressure blower 4.
  • a bypass 17 is provided with a built-in pressure relief valve 18, which ensures the pressure difference necessary for operation.
  • the blasting chamber 1 has a blasting chamber housing 19 (FIGS. 1 and 2) which can be closed by means of a door 20 which can be actuated by a drive (not shown).
  • the blasting chamber housing 19 is mounted about a horizontal swivel axis 21 in fixed swivel bearings 22 between the three working positions shown above a conveyor belt 23 and can lift off the workpieces 24 arriving individually and one after the other, radiate and then put them back on the conveyor belt 23.
  • the front of the blasting chamber housing 19 is open and can be closed by the door 20 which can be pivoted about the axis 25 and is provided with a drive.
  • the blast wheel housing with the blast wheel 26, which is driven by a motor 27, is arranged on the blasting housing.
  • the feed line 3a for the blasting agent opens. axially to the centrifugal wheel 26.
  • the blasting chamber housing 19 is provided with a collecting trough 28, in which a screw conveyor 29 acting as a ridge mill is arranged, which crushes any larger burrs and makes them passable for the return line 3b and with the jet - promotes tel in the collecting trough 28 to the inlet of the return line 3b.
  • the return line 3b is connected to the collecting trough 28.
  • a hollow profile such as a square rod 30, is axially displaceably mounted, to which two reversibly drivable pairs of drive rollers 31 are assigned, which are driven by a chain or belt drive from a drive wheel 32.
  • the square tube 30 is provided at the end with pivot bearings 33, in which a hollow shaft 34 is mounted.
  • the hollow shaft 34 carries a bearing body 35, on which angle levers 36 which are connected to one another in an articulated manner are pivotably mounted.
  • a sprocket 37 is rotatably mounted on the hollow shaft 34, which can be driven by a motor 39 by means of a chain 38.
  • control disks 40 likewise seated on the hollow shaft 34 and limit switches 41 (FIG. 3) interacting therewith.
  • a rod 42 is mounted axially displaceably in the hollow shaft 34, the front end of which is pivotally connected to the angle levers 36 and the rear end of which is coupled to an air cylinder 44 via a rotary coupling 43.
  • the air cylinders 44. as well as the motor 39 are attached to a bracket 45, which in turn is attached to the square tube 30.
  • the limit switches 41 are also attached to the bracket 45.
  • the bearing body 35 and the angle lever 36 together form a pliers-like workpiece holder which can be actuated by the air cylinder 44 via the rod 42.
  • the workpiece holder 35, 36 can be displaced between the end positions shown in broken lines in FIG. 2 by means of a square tube 30.
  • the reference number 46 denotes the path that the workpiece holder 35, 36 can travel out of the blasting chamber housing 19 in order to grip a workpiece lying outside the blasting chamber housing 19 and to bring it into it.
  • the reference number 47 designates the path that the workpiece holder 35, 36 and the workpiece travel within the blasting chamber housing and can thereby lead through the blasting cone indicated by dashed lines.
  • the additional function of the blasting chamber 1 as a handling device in addition to the actual blasting can be described with reference to FIG. 1. If the blasting chamber 1 on the conveyor belt 23 (FIG. 1) is successively supplied with workpieces 24, the blasting chamber housing 19 is initially pivoted into the position shown in solid lines in FIG. 1 and the square tube 30 is extended with the door open, so that it is only there symbolically indicated workpiece holder 35, 36 can grip a workpiece in a first position. Then the drive roller pairs 31 are driven such that the square tube 30 into the blasting chamber housing 19 is retracted into the position shown in FIG. 2 with solid lines.
  • shut-off device 6 is blocked and the blasting agent supply is interrupted, so that only compressed air flows through the blasting chamber housing 19 and cleans the workpiece from dust piece holder 35, 36 reaches its second position, the shut-off device 7 and 8 is blocked, the blasting chamber housing 19 is pivoted into the position indicated by reference number 68 (FIG. 1) and the door 20 is opened.
  • the square tube 30 is now pushed out of the blasting chamber housing 19 until the workpiece 24 is again on the conveyor belt 23, whereupon the air cylinder 44 is actuated in such a way that the workpiece holder 35, 36 releases the workpiece 24.
  • FIG. 4 shows a further exemplary embodiment of a blasting chamber 1 in the same representation as FIG. 2, with four blasting nozzles 50 being provided instead of the centrifugal wheel 26. Otherwise, the blasting chamber 1 is of the same design as in FIGS. 1 to 3, so that the same reference numbers are used here for the same parts as there.
  • the workpiece holder 51 is designed here as a cube-shaped mesh grid basket and can be closed with a pivotably arranged cover 52.
  • the cover 52 is opened or opened by a pivot lever 53 closed, which is pivoted by the push rod 42 from the air cylinder 44.
  • the pivot axis 25 of the door 20 is arranged here at the bottom of the blasting chamber housing 19 at the collecting trough 28.
  • This has the advantage that when workpieces are taken over, the door 20 can be pivoted into an approximately horizontal position, in which it contains any particles that fall through the mesh grating body 51, such as e.g. Burrs of thermoset parts, catches and transported into the interior of the blasting chamber housing 19 when closed. Such burrs then return together with the abrasive to the abrasive preparation 2 and are eliminated at a central location.
  • the blasting chamber housing 19 is pivotally mounted on a vertical pivot axis 55 with a pivot bearing 54. The pivoting movement of the steel chamber 1 about the pivot axis 55 can be carried out by a motor 56 and a pivoting gear 57.
  • the blasting chamber 1 is brought into the position shown in FIG. 5, in which the open mesh basket 51 lies under a filling funnel 58, through which the workpieces fall directly from a conveyor belt 59 into the mesh basket 51 or into the for example, they are ejected directly from a plastic press. Then the blasting chamber 1 is pivoted away to the side Door 52 closed and the mesh basket 51 pulled back into the blasting chamber housing 19, whereupon the door 20 closes. Then, the mesh screen basket 51 is rotated with the shaft 34 through the beam cone, the mesh screen basket 51 must be designed so that a minimum of the energy of the blasting agent beam is absorbed by the grid.
  • the rotary drive 39 is stopped in such a way that the mesh screen basket 51 lies with the door 52 downward and the workpieces fall out automatically when the door 52 is opened.
  • the door 20 to the blasting chamber housing 19 stands vertically downwards.
  • FIG. 6 shows a beam camera which can also be pivoted about a vertical axis 55 and, at different height levels of the takeover and transfer points, additionally about a horizontal axis, in which the end of a feeder belt 60 for the workpieces forms the takeover point, whereas the transfer point through the beginning of a mylich.verieuxen in the conveying direction transporting belt 61 is formed, to which the workpieces with respect to the conveying direction by the Ver - be mounted rotating the blast chamber housing 1, the swing angle.
  • the blasting chamber 1 is a handling device which, in addition to the blasting function, can take over workpieces at at least one location and can go back to each of these locations or to other locations.
  • the mobility of the steel chamber 1 depends solely on it; by how many and which of the three spatial axes is given away as a gift.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Spray Control Apparatus (AREA)
EP83111363A 1982-11-22 1983-11-14 Cabine de grenaillage et son mode d'utilisation Withdrawn EP0110228A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH677382 1982-11-22
CH6773/82 1982-11-22

Publications (2)

Publication Number Publication Date
EP0110228A2 true EP0110228A2 (fr) 1984-06-13
EP0110228A3 EP0110228A3 (fr) 1985-05-15

Family

ID=4314798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111363A Withdrawn EP0110228A3 (fr) 1982-11-22 1983-11-14 Cabine de grenaillage et son mode d'utilisation

Country Status (2)

Country Link
EP (1) EP0110228A3 (fr)
JP (1) JPS59105866A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003889A1 (de) * 1990-02-09 1991-08-14 Herbert Lacker Einrichtung zur mechanischen bearbeitung von oberflaechen
DE4036568A1 (de) * 1990-11-16 1992-05-21 Herbert Lacker Anlage zum strahlen von blechen
CN107930923A (zh) * 2017-12-29 2018-04-20 三联泵业股份有限公司 一种叶轮涂层的喷涂挂具

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1656238A (en) * 1921-12-12 1928-01-17 Ruemelin Richard Sand-blast tumbler
US1544513A (en) * 1923-07-06 1925-06-30 Joseph P Wild Tumbling and sand-blast cleaning machine
US1695362A (en) * 1926-04-09 1928-12-18 Metallisator Berlin A G Separating apparatus
US3131457A (en) * 1962-07-31 1964-05-05 Bell Intercontinental Corp Stress peening machine
US3624967A (en) * 1969-09-02 1971-12-07 Charles E Kamper Peening machine
US3879902A (en) * 1972-05-22 1975-04-29 Wheelabrator Frye Inc Method for surface treatment of work pieces
DK153529C (da) * 1980-05-01 1988-12-12 Ao Eng As Renseaggregat til rensning af den indre overflade af en beholder
US4333277A (en) * 1980-07-28 1982-06-08 Tasedan Robert T Combination sand-blasting and vacuum apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003889A1 (de) * 1990-02-09 1991-08-14 Herbert Lacker Einrichtung zur mechanischen bearbeitung von oberflaechen
DE4036568A1 (de) * 1990-11-16 1992-05-21 Herbert Lacker Anlage zum strahlen von blechen
CN107930923A (zh) * 2017-12-29 2018-04-20 三联泵业股份有限公司 一种叶轮涂层的喷涂挂具

Also Published As

Publication number Publication date
JPS59105866A (ja) 1984-06-19
EP0110228A3 (fr) 1985-05-15

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