Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
  • B22D31/002—Cleaning, working on castings
  • B22D31/007—Tumbling mills

Definitions

• the present invention relates to a deburring machine with a rotary drum comprising a structure on which said drum is mounted, and drive means for driving this drum in rotation about its axis.
• drums which are intended to receive casting parts, oxy-cut metal parts, or molded parts in synthetic material, can reach relatively large dimensions.
• These drums generally have a polygonal section and one or more faces have an opening which is closed by means of a cover during the operation of the machine.
• the filling of the drum is usually done from the top, the cover having been removed beforehand and the evacuation of the parts is usually done downwards, the drum having been rotated by about 180 °.
• the drum is generally at a sufficient height to allow a container to be brought under it in a position allowing the reception of the parts during the phase of evacuation of these parts after their treatment in this drum.
• these machines are often equipped with a pivoting loader which is tilted upwards to pour into the drum the parts which have been previously placed in this loader.
• the overall height of these machines is significant since it corresponds substantially to the sum of the heights of the container for receiving the parts after their treatment, the rotary drum and the loader when it is in its high position in which he pours the pieces into the drum.
• the present invention proposes to overcome this drawback by producing a drum deburring machine, in which the overall height is considerably reduced without reducing the dimensions, consequently the capacity, of the drum.
• said structure comprises a fixed frame, a support movable relative to the fixed frame and carrying said drum, and means for moving this support between a first low position and a second high position and to maintain it in one or other of these positions.
• the means for moving said support between said first low position and said second high position comprise a mechanical device for moving the support in translation substantially vertically and parallel to itself and a force generating member to ensure this. displacement.
• the mechanical device comprises at least one element formed by two cross arms, articulated in their middle.
• the mechanical device comprises two elements each formed of two cross arms articulated in their middle and arranged at the two ends of the support.
• the force generating member is a hydraulic cylinder.
• the fixed frame includes support stops arranged to support said mobile support in its first low position.
• the support stops consist of two damping elements arranged to serve as support for the two longitudinal sides of the mobile support.
• One end of one of the arms can be articulated to the fixed frame, and one end of the other arm can be articulated on the movable support.
• the hydraulic cylinder is mounted between the two cross arms of said element.
• the movable support carries a frame on which is articulated a cover for closing the tank.
• the machine can also include a hydraulic cylinder mounted between said frame and a support carrying said cover to open or close the latter; • and said frame can carry an elevator associated with a hydraulic cylinder arranged to raise or lower said elevator.
• fig. 1 represents an elevation view of the deburring machine according to the invention, in a position of preparation for loading the parts to be treated into the rotary drum,
• fig. 2 shows the machine of FIG. 1 in its loading position
• fig. 3 shows the machine of FIGS. 1 and 2 in its position for evacuating the parts after their treatment
• fig. illustrates a variant of a machine according to the invention having no integrated charger.
• the deburring machine 10 essentially comprises a rotary drum 11 comprising an axis of rotation 12 and carried by a structure 13 consisting of a fixed frame 14, a support 15 movable relative to this fixed frame and means 16 designed to move this support from its low position shown in FIGS. 1 and 2 towards its upper position illustrated in FIG. 3 and to maintain this support in one or other of these positions.
• the drum is rotated by a drive mechanism 17 comprising a drive motor 18 and a gear train (not shown) housed in a housing 19.
• a drive mechanism 17 comprising a drive motor 18 and a gear train (not shown) housed in a housing 19.
• the fixed frame 14- carries two damping elements 20 and 21, made of a relatively hard elastomeric synthetic material, which are mounted on two beams 22 and 23 respectively connected to each other by crosspieces 24.
• the support 15 In its low position, the support 15 is supported by its longitudinal sides on the damping elements 20 and 21.
• the drum 11 is provided with a cover 25 which corresponds to an opening extending on two contiguous faces of the drum of hexagonal section.
• This cover 25 is mounted on a support 26 articulated on an axis 27 secured to a frame 28 carried by the support 15.
• the opening and closing of the cover is carried out by means of hydraulic jacks 9 mounted between the frame 28 and support 26.
• this machine is equipped with a lift 29 called an integrated lift, which is articulated on an axis 30 also carried by the frame 28.
• This lift is designed to receive a container 31 which initially contains the parts to be treated and which is intended to receive these same parts after their treatment.
• the elevator 29 is lifted by a hydraulic cylinder 32, one of the ends of which bears on the support 15 or, more precisely in this case on a plate 33 secured to the support 15.
• the size of the machine is delimited by a body 34- which can be soundproofed.
• the magazine In the position illustrated in fig. 2, the magazine has been brought into a position in which the coins are poured into the drum.
• the magazine In the next phase, the magazine is returned to its original position and the empty container is removed from the magazine.
• the cover is again brought to the drum and fixed to the latter by means of an appropriate locking device, this cover being of course separated from the support 26.
• the operation of processing the parts can begin, that is to say say that the drum can be rotated for the time provided.
• the drum remains in the low position and the support 15 remains in abutment on the damping elements 20 and 21.
• the support 15 When the treatment operation is finished, the support 15 is brought into its high position shown in FIG. 3.
• the means 16 are, in the example illustrated, constituted by two elements each formed by two arms 35 and 36 articulated on an axis 37 and connected in pairs by a hydraulic cylinder 38. These two elements, including only one is shown, are arranged on either side of the support 15.
• the arm 35 is articulated at its lower end 39 on the spar 23 and the arm 36 is articulated at its upper end 40 on a vertical element 41 of the armature 28.
• the two other ends of the arms slide one freely on the crosspieces 24 and the other on the lower surface of the support 15.
• FIG. 4 illustrates a variant of a machine in which the loader is not integrated but is replaced by a handling vehicle 50 known per se.
• the fork of this lifting type handling vehicle carries a special support 51 intended to receive a container and to ensure the pivoting of this container to allow it to pour its contents inside the drum.
• the other elements of the machine are identical to those described above.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9394562

Family Applications (1)

Country Status (4)

Cited By (1)

Family Cites Families (4)

• 1990
  • 1990-03-08 FR FR9003011A patent/FR2659257A1/fr not_active Withdrawn
• 1991
  • 1991-03-06 WO PCT/CH1991/000053 patent/WO1991013712A1/fr not_active Application Discontinuation
  • 1991-03-06 CA CA002055496A patent/CA2055496A1/fr not_active Abandoned
  • 1991-03-06 EP EP19910904686 patent/EP0471812A1/de not_active Withdrawn

Non-Patent Citations (1)

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