Automated part separation system integrated into a dry deburring machine

Abstract

The present invention relates to a rotary treatment tank (12) for a dry degreasing and deburring machine (10), the tank (12) comprising at least one cylindrical shell (18) about a principal axis (R), the shell (18) delimiting an internal volume intended to receive at least one workpiece and an abrasive media, the shell (18) comprising at least one movable lid between an open position of the internal volume and a closed position of the internal volume, the tank (12) comprising a device for separating the workpiece from the abrasive media within the internal volume of the shell (18), the separation device comprising at least one movable separating element between a retracted position outside the internal volume and a deployed position in which it extends at least partially into the internal volume of the tank. Figure for the abstract: 1

Description

Title of the invention: Automated parts separation system integrated into a dry deburring machine Technical field of the invention

[0001] The present invention relates to a dry degreasing and deburring machine. Technical background

[0002] It is well known that degreasing, deburring, and polishing industrial parts that are cut, forged, cast, or machined, and extruded and machined profiles, is tedious and labor-intensive. Apart from processes using hand tools or mechanical brushing devices, the most commonly employed technique is vibratory finishing, which involves immersing one or more parts in a vibrating tank filled with abrasive media. This media operates in a wet environment with the addition of chemicals to degrease and lubricate the moving load. The load of parts and abrasives is vibrated by an unbalanced motor to cause the abrasives to rub against the parts, thus deburring or polishing them. The parts are then separated from the abrasives, washed, and dried to prevent corrosion.

[0003] To avoid the use of chemicals which require complex treatment processes in order to limit polluting discharges, an alternative to this type of machine is the use of a dry degreasing and deburring machine.

[0004] The use of such a dry degreasing and deburring machine is known, in particular, as described in utility certificate FR3108049A3. The machine comprises, among other things, a rotating tank mounted in a frame in which the workpiece to be treated is placed, with the addition of abrasive media. The tank is then rotated, causing repeated friction of the abrasive media on the workpiece, thus deburring it.

[0005] However, although this process is effective for treating parts to be deburred, the recovery of the latter at the end of the deburring process can prove complex.

[0006] Indeed, following the rotation of the tank, the treated part becomes mixed with the abrasive media, making it difficult to access. The treated part may, for example, be covered with a significant amount of abrasive media. Thus, recovering the treated part requires removing the abrasive media from its surface, a tedious step.

[0007] The invention therefore aims to remedy the aforementioned problem by proposing a deburring machine in which the recovery of parts at the end of the deburring process is facilitated. Summary of the invention

[0008] The invention proposes a rotating treatment tank for a dry degreasing and deburring machine, the tank comprising at least one cylindrical shell around a main axis, the shell delimiting an internal volume intended to receive at least one part to be treated and an abrasive medium,

[0009] the shell comprising at least one movable cover between an open position of the internal volume and a closed position of the internal volume,

[0010] the tank comprising a device for separating the part to be treated from the abrasive media in the internal volume of the shell, the separation device comprising at least one movable separation element between a retracted position outside the internal volume, and a deployed position in which it extends at least partly into the internal volume of the tank.

[0011] According to other features of the invention: - the separation element comprises at least two claws, each of the claws being movable through an associated opening formed through the shell, the separation device comprising at least one guide assembly for the separation element capable of guiding the movement of the separation element between its retracted position in which the claws are entirely outside the internal volume of the tank, and its deployed position in which the claws are at least partly inside the internal volume of the tank; - the claws have a curved shape that follows the cylindrical shape of the shell in the retracted position of the separating element; - the claws each include a free end intended to fit into the internal volume when the separation element is in its deployed position, the separation element being configured such that the free end of each of the claws extends in the vicinity of the main axis of the hull when the separation element is in its deployed position; - the free end of each of the claws is configured to close the opening associated with its claw when the separating element is in its retracted position; - the claws are carried by a longitudinal member in such a way that they extend parallel to each other and axially at a non-zero distance from each other in such a way that they allow at least the abrasive medium to be differentiated from the workpiece; - the separating element is movable around an instantaneous center of rotation, parallel and distinct from the main axis of the tank; - the separation device includes at least two guide members which each extend outside the internal volume and kinetically between one of the openings associated with one of the claws and the spar, each of the claws being configured to cooperate with one of the guide members; - the guide assembly of the separation element includes at least one locking member which is movable between a neutral position in which it locks the separation element in position relative to the hull in either of its retracted or deployed positions and a free position in which it allows the movement of the separation element relative to the hull towards its retracted position or towards its deployed position.

[0012] The invention also relates to a dry degreasing and deburring machine comprising at least one rotating treatment tank according to any one of the preceding characteristics, the tank being mounted in a frame capable of rotating said tank around its main axis, the frame comprising at least one actuator of the locking member and the cover, the actuator participating in moving the locking member from its neutral position to its free position and vice versa and participating in moving the cover from its open position to its closed position and vice versa.

[0013] According to a feature of the machine, the frame is able to position the tank in a first position in which the actuator cooperates with the locking member, and in a second position in which the actuator is able to participate in the movement of the lid.

[0014] According to a characteristic of the machine, the actuator includes at least one pneumatic or hydraulic or electric cylinder.

[0015] The invention also relates to a method for degreasing and deburring a part using a degreasing and deburring machine according to any one of the preceding characteristics, the method comprising at least:

[0016] - a first step in which the part is placed in the internal volume of the tank, the tank including the lid in its open position,

[0017] - a second step in which the cover is tilted into its position of closing,

[0018] - a step in which the separating element is moved into its position retracted if it is in its deployed position during the first step,

[0019] - a third stage of rotating the tank through several revolutions,

[0020] - a fourth step in which the tank is positioned in its first position in such a way as to move the separating element into its deployed position,

[0021] - a fifth step in which the tank is rotated on at least one a turn in such a way as to separate the workpiece from the abrasive medium,

[0022] - a sixth step in which the tank is positioned in its second position in such a way as to position the lid in its open position. Brief description of the figures

[0023] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, for an understanding of which reference should be made to the accompanying drawings in which:

[0024] [Fig-1] is a general perspective view of a dry degreasing and deburring machine according to an example of the invention comprising at least one rotating treatment tank;

[0025] [Fig.2] is a general perspective view of the tank of [Fig. 1] comprising at least one shell incorporating a lid;

[0026] [Fig.3] is a front view of the tank of [Fig.1] showing a device for separating a part from at least one abrasive medium, comprising a separating element and a guiding assembly for the separating element;

[0027] [Fig.4] is a detailed view of the guide assembly of the separation device of the [Fig.3];

[0028] [Fig.5] is a side view of the tank showing a plate including among other things a guide groove and a control slide of the guide assembly of the separation device of the [Fig.3];

[0029] [Fig.6] is a radial sectional view of the tank of [Fig.1] in which the lid is in the open position and the separating element is in a retracted position, the tank being in a second position;

[0030] [Fig.7] is a radial cross-sectional view of the tank of [Fig.1] in which the lid is in the closed position and the separating element is in its retracted position, the tank being in the second position;

[0031] [Fig.8] is a radial cross-sectional view of the tank of [Fig.1] in which the lid is in the closed position and the separating element is in its retracted position, the tank being in a first position;

[0032] [Fig.9] is a radial cross-sectional view of the tank of [Fig.1] in which the lid is in the closed position and the separating element is in a deployed position, the tank being in the first position;

[0033] [Fig. 10] is a radial cross-sectional view of the tank of [Fig.1] in which the lid is in the closed position and the separating element is in its deployed position;

[0034] [Fig. 11] is a radial cross-sectional view of the tank of [Fig.1] in which the lid is in the closed position and the separating element is in its deployed position, the tank being in the second position;

[0035] [Fig. 12] is a radial cross-sectional view of the tank of [Fig.1] in which the lid is in the open position and the separating element is in its deployed position, the tank being in the second position. Detailed description of the invention

[0036] In the description that follows, identical, similar or analogous elements will be designated by the same reference numerals.

[0037] Fig. 1 illustrates a dry degreasing and deburring machine 10 according to a non-limiting example of the invention, and of which part of an external calender has been removed in order to reveal a treatment tank 12.

[0038] The machine 10 includes in particular two boxes which extend on either side of the tank 12, and which include among other things the electronic and motorization systems of the machine 10, not visible here and which will not be the subject of a detailed description.

[0039] In relation to [Fig.1], a frame 14 of the machine 10 is defined around which the calender of the machine 10 is arranged and delimiting a treatment enclosure 16 in which the tank 12 extends.

[0040] The treatment tank 12, according to the illustrated example of the invention, is rotating and is driven in rotation around a main axis R by means of a motor located in one of the machine's casings 10 and not shown here. In particular, the motor is adapted to engage with a rotation shaft 13 of the tank 12, visible in [Fig. 2].

[0041] The tank 12 includes in particular a cylindrical shell 18, here hexagonal in shape, around the main axis R and delimiting an internal volume 20, visible in figures 6 to 12.

[0042] The internal volume 20 is designed to receive at least one part P to be treated, an absorbent medium M2 and an abrasive medium ML

[0043] The absorbent medium M2 may, in particular, consist of corn cobs or wood chips. The abrasive medium M1 preferably consists of parts, for example conical, made of polymer and / or composite. These media are described in particular in utility certificate FR3108049A3.

[0044] Thus, the part P disposed in the internal volume 20 of the shell 18 can undergo the deburring process during the rotation of the treatment tank 12 around its main axis R, by the motor.

[0045] In particular, the tank 12 is rotated for several revolutions so that repeated contact with the media M1, M2 degreases, deburrs and polishes the part P.

[0046] It should be considered that, firstly, the tank 12 will be described structurally and then, secondly, the operation of the tank within the dry degreasing and deburring machine, and in particular the deburring process. will be detailed.

[0047] As mentioned above, the tank 12 comprises the hexagonal shell 18, delimited herein, but not limited to, by six sides 22 connected to one another. Two plates 24 then extend from the axial ends of the sides 22, such that they connect them in order to delimit the internal volume 20 of the shell 18.

[0048] According to an example of the invention, the sides 22 of the shell 18 and the plates 24 are lined in the internal volume 20 by a coating 25. The coating 25 can be, for example and without limitation, a rubber coating so as to limit damage to the parts during their deburring.

[0049] As can be seen in figures 6 to 12, the shell 18 includes drainage ports 26 which extend through one of the sides 22 of the shell 18, which is defined in the following description as a drainage side 22e.

[0050] The discharge ports 26 communicate with a suction channel 28 which extends outside the internal volume 20 and along the discharge side 22e so as to allow the recovery of dust and debris from the processing of the part, outside the shell 18.

[0051] According to a non-limiting example of the invention, the suction channel 28 is connected to a dust extraction system, not visible, arranged for example in one of the machine's housings.

[0052] The shell 18 according to the illustrated example of the invention comprises at least one movable cover 30 between an opening position of the internal volume 20, visible in figures 6 and 12, and a closing position of the internal volume 20, visible in figures 7 to 11.

[0053] More precisely, the cover 30 corresponds to at least one of the sides 22 of the shell 18.

[0054] In the illustrated example of the invention and without limitation, the cover 30 corresponds to the side 22 of the shell 18 which extends radially opposite the discharge side 22e, and also incorporates at least a part of the sides adjacent to said side.

[0055] A displacement set 32 ​​of the cover 30 is defined, visible in figures 2 and 3, and capable of moving the cover 30 between its closed position and its open position and vice versa.

[0056] In the first part of the description, the set of movement 32 of the cover will be described in the closed position of the cover 30 in relation to figures 2, 3 and 5.

[0057] The displacement assembly 32 of the cover 30 includes among other things two circular grooves 34, one of which is visible in [Fig.5], each formed on one of the plates 24 of the shell 18.

[0058] More precisely, the plates 14 of the shell 18 include a first radial protrusion 36 which extends radially beyond a perimeter of the shell 18, each of the circular grooves 34 being formed at the level of the first radial protrusion 36 of each of the plates 24.

[0059] According to another non-limiting and unillustrated example of the invention, the circular grooves can be formed on peripheral plates, separate from the plates and arranged to overlap the latter.

[0060] The circular grooves 34 also have a curved shape which follows the shape of the hull 18. In particular, the circular grooves 34 extend around an axis coaxial with the main axis R of the tank 12.

[0061] The displacement assembly 32 of the cover 30 also includes two tubular guide members 40, visible in figures 2 and 3, aligned axially with respect to each other.

[0062] More precisely, the guide members 40 extend outside the internal volume 20 and are integral with the cover 30.

[0063] More specifically and without limitation, the guide members 40 are presented as sliding rods incorporating an elastic return member, for example a spring.

[0064] As can be seen in [Fig.3], an axial end of each of the guide members 40, called engagement end 44, is engaged in one of the circular grooves 34 of one of the plates 24.

[0065] The engagement ends 44 are configured so that they are able on the one hand to lock the guide members 40 in position relative to the circular grooves and on the other hand to allow the movement of the guide members 40 relative to the circular grooves 34, under the effect of two actuators 50 of the machine 10.

[0066] More specifically, the machine 10 includes two actuators 50, carried by the frame 14 and of which only one is visible in [Fig.1].

[0067] More precisely, the actuators 50 extend axially on either side of the tank 12.

[0068] The actuators 50 are able to engage with the engagement ends 44 of the guide members 40 when the tank 12 is in certain positions, visible in figures 7 and 11.

[0069] The actuators 50 are then able to exert axial pressure on the engagement ends 44 of the guide members 40 so as to allow the movement of the engagement ends 44 in the circular grooves 34, and thus the movement of the cover 30.

[0070] The actuators 50 are also capable of releasing the axial pressure on the engagement ends 44 of the guide members 40 in order to lock the engagement ends 44 in position in the circular grooves 34 and thus block the dis- Lid placement 30.

[0071] According to a non-limiting example of the invention, the actuators may be pneumatic, hydraulic, or electric cylinders. It should also be considered that the actuators may take any form other than cylinders, as long as they are capable of fulfilling their function as described in this application.

[0072] The movement assembly 32 of the cover 30 also includes a joint which extends opposite the guide members 40 and which partly ensures that the cover 30 is held in its open position, as seen in figures 6 and 12.

[0073] The kinetics of the movement of the cover 30 according to the means described above will be detailed further in the description.

[0074] The tank 12 according to the example of the illustrated invention further includes a separation device 60 of the part P to be treated from the media M1, M2 in the internal volume 20 of the shell 18.

[0075] The separation device 60 includes at least one separation element 62 movable between a retracted position outside the internal volume 20, visible in figures 6 to 8, and a deployed position in which it extends at least partly into the internal volume 20 of the tank 12, visible in figures 9 to 12.

[0076] In particular, the separating element 62 is movable around an instantaneous center of rotation C which defines an axis parallel and distinct from the main axis R of the tank 12.

[0077] The separating element 62 comprises, according to a non-limiting example of the invention, a plurality of claws 64 visible in [Fig.3].

[0078] More precisely, the claws 64 have a curved shape which follows the cylindrical shape of the shell 18 in the retracted position of the separating element 62. Such a configuration of the claws 64 makes it possible, among other things, to reduce the size of the tank 12.

[0079] Furthermore, in the deployed position of the separating element 62, visible in [Fig. 1 1], the claws 64 extend at least partly into the internal volume 20 such that their convex sides extend opposite the cover 30 and their concave sides extend substantially opposite the discharge side 22e.

[0080] According to a preferred embodiment of the invention, the claws 64 are made of a metallic material and are covered with a layer of rubber on their external surface.

[0081] According to another non-limiting example of the invention, the claws 64 are made of a plastic and / or composite material.

[0082] Regardless of the material of the claws, they must have sufficient rigidity to allow the recovery of the part.

[0083] It should also be considered that the claws 64 can be made of different materials as long as the claws 64 have a surface hardness always lower than that of the parts being treated. This prevents damage to the parts by the claws. during their separation from the media. Thus, the separation element 62 can be used for high-precision parts, such as those used in aeronautics, without risk of damage.

[0084] The separating element 62 further includes a longeron 66 carrying the claws 64 and which extends axially outside the internal volume 20 of the hull 18.

[0085] Moreover, the claws 64 carried by the spar 66 extend parallel to each other and are separated from each other by a non-zero axial distance D, visible in [Fig.3].

[0086] It is understood that the non-zero distance D between the claws 64 is considered in a direction parallel to the main axis R of the tank 12.

[0087] According to a non-limiting example of the invention, each of the claws 64 is attached to the spar 66 by means of a removable fastener 67, for example by screwing.

[0088] Such a configuration of the separating element 62 is advantageous in that it allows the number of claws 64 and their spacing to be adjusted according to the dimensions of the shell 18 and the dimensions of the part to be deburred.

[0089] It is further understood that the spacing of the claws 64 is determined such that the distance D allows the workpiece to be retained while allowing the media to pass through. In other words, the distance D is determined such that the claws perform a filtering function, retaining the workpiece and allowing the media to pass between them.

[0090] As can be seen in figures 9 to 12, the hull 18 comprises a plurality of openings 68, the number of which is here identical to the number of claws 64 carried by the longeron 66.

[0091] Thus, the claws 64 are each mobile through one of the openings 68 formed in the shell 18.

[0092] It is then understood that the claws 64 are able to enter and exit the internal volume 20 of the shell 18 when the separating element 62 moves between its retracted position and its deployed position, through the openings 68.

[0093] A free end 70 of the claws 64, opposite the spar 66, is defined, the separating element 62 being configured such that the free end 70 of each of the claws 64 extends in the vicinity of the main axis R of the hull 18 when the separating element 62 is in its deployed position, as seen in figures 9 to 12.

[0094] More precisely, the claws 64 according to the example of the invention are dimensioned so that they extend into the internal volume 20 of the shell 18 over a distance equivalent to at least two-thirds of a radius of the shell 18 and at most over a distance equivalent to a radius of the shell 18.

[0095] Such a dimensioning of the claws ensures optimal filtration of the part disposed in the internal volume 20.

[0096] According to a non-limiting feature of the invention, the free end 70 of each of the claws 64 is configured to close the opening 68 associated with its claw 64 when the separating element 62 is in its retracted position as seen in figures 6 to 8.

[0097] This allows the internal volume 20 of the shell 18 to remain sealed when the separating element 62 is in its retracted position. More specifically, the sealing of the openings 68 by the free ends 70 of the claws allows the media to be contained within the internal volume 20 of the shell 18.

[0098] According to the example of the invention illustrated in [Fig.3], the separation device 60 comprises guide members 72 which each extend outside the internal volume 20 and kinetically between one of the openings 68 associated with one of the claws 64 and the spar 66. Each of the claws 64 is then configured to cooperate with one of the guide members 72.

[0099] According to a non-limiting example of the invention, the guide members 72 each have the form of a double-walled part delimiting a passage of the claws 64 and between which rotating elements 73 extend.

[0100] More precisely, each of the guide members 72 comprises rotating elements 73 in the form of cylinders that rotate about an axis parallel to the main axis R of the tank. The rotating elements 73 are arranged so that they guide the claws 64 during their movement between their retracted and extended positions.

[0101] The rotating elements 73 also participate in the radial retention of the claws 64 during their movement from one position to another.

[0102] The rotating elements can, for example and without limitation, take the form of rollers or rollers mounted freely to rotate on fixed shafts.

[0103] In other words, the guide members 72 ensure the retention and guidance of the claws 64 during their rotation around the instantaneous center of rotation C.

[0104] The separation device 60 further includes a guide assembly 74 for the separation element 62 which helps to guide the movement of the separation element 62 between its retracted position and its deployed position.

[0105] According to a non-limiting example of the invention, the guide assembly 74 comprises two arms 76, visible in figures 3 and 4, which each extend between one of the axial ends 78 of the spar 66 and a locking member 80.

[0106] It is then understood that the longeron 66 is linked to the movements of the arms 76 to which it is attached.

[0107] The locking member 80 is presented as a coupler which is movable between a neutral position in which it locks the separating element 62 in position relative to the shell 18, and a free position in which it allows the movement of the separating element 62 relative to the shell 18.

[0108] For example, the locking member 80 can take the form of a conical piston with spring.

[0109] The guide assembly 74 also includes a guide groove 84 and a control slide 86.

[0110] More precisely and as can be seen in [Fig.5], each of the plates 24 mentioned above includes a second radial protrusion 82, in which extends the guide groove 84 and the control slide 86.

[0111] The guide groove 84 extends circularly around the instantaneous center C of rotation of the separating element 62.

[0112] The control slide 86 can be coaxial with the guide groove 84 or extend around a separate axis.

[0113] Furthermore, according to the illustrated example of the invention, the control slide 86 includes retaining ends 88 on either side of a central portion 90.

[0114] Thus, according to the illustrated example of the invention, each of the axial ends 78 of the spar 66 is configured to be engaged in one of the guide grooves 84 and the locking members 80 are configured to be engaged in one of the control slides 86.

[0115] The arms 76 then allow the axial ends 78 of the longitudinal member 66 to be secured in movement with the locking members 80.

[0116] The locking members 80 are dimensioned so that they are able to be blocked in motion in the retaining ends 88 in their neutral position and that they are able to move in the central portions 90 in their free position.

[0117] Thus it is understood from the above that the locking members 80 are configured to allow or block the movement of the axial ends of the spar in the guide grooves 84.

[0118] According to the example of the invention, the actuators 50 mentioned above participate in moving the locking member 80 from its neutral position to its free position and vice versa.

[0119] More precisely, when the tank 12 is in certain positions so as to position the locking members 80 axially opposite the actuators 50, the latter are able to cooperate with the locking members 80 in order to exert axial pressure against the latter.

[0120] The axial pressure exerted by the actuators 50 then allows the locking members 80 to be switched from their neutral position to their free position described previously.

[0121] A first position of the tank 12 is then defined, visible in Figures 8 and 9, corresponding to positions of the tank 12 in which the motor positions the locking members 80 opposite the actuators 50, and a second position of the tank 12, visible in figures 6, 7, 11 and 12, correspond to positions of the tank 12 in which the motor positions the engagement ends 44 of the guide members 40 of the cover 30 opposite the actuators 50.

[0122] It is understood in particular that the first position of the tank 12 corresponds to an angular position of the tank 12 in which the locking members 80 are opposite the actuators 50 and that the second position of the tank 12 corresponds to an angular position of the tank 12 in which the engagement ends 44 are opposite the actuators 50.

[0123] Thus, in the first position of the tank 12, the actuators 50 are able to act on the separating element 62, and in the second position of the tank 12, the actuators 50 are able to act on the lid 30.

[0124] The method of moving the separating element 62 will now be described.

[0125] In order to move the separating element 62 from its retracted position to its deployed position, the tank 12 is positioned in its first position, visible in [Fig.8], such that the locking members 80 extend axially in relation to the actuators 50.

[0126] Once the tank 12 is in its first position, the actuators 50 are actuated in such a way that they move the locking members 80 from their neutral position to their free position.

[0127] In other words, the actuators 50 disengage the locking members 80 from the retaining ends 88 of the control slides 86 in which they are engaged, so as to allow the movement of the locking members 80 in the central portions 90 of said control slides 86.

[0128] It is then understood that the cooperation between the actuators 50 and the locking members 80 secures the latter to each other and thus locks the locking members 80, and therefore also the longitudinal member 66, in position relative to the frame 14.

[0129] Once the locking members 80 are in their free position, the tank 12 is driven in rotation in a first direction SI of rotation such that the locking members 80 and the axial ends 78 of the longitudinal member 66 slide respectively in the control slides 86 and in the guide grooves 84, then moved in the first direction S1 of rotation.

[0130] Such a rotation of the tank 12 in the first direction SI of rotation when the locking members 80 are in their free position and locked in position relative to the frame, has the effect of placing the claws 64 in the internal volume 20 as seen in [Fig.9].

[0131] It is therefore understood that during the rotational movement of the tank 12 in the first direction SI while the locking members 80 are in their free position, the separating element 62 passes from its retracted position to its deployed position.

[0132] It is also understood that the tank 12 is driven in rotation in the first direction SI until the locking members 80 are at the other end of the retaining 88 of the control slides 86.

[0133] Once the locking members 80 are in the other retaining end 88 of the control slides 86, as seen in [Fig.9], the tank is immobilized and the actuators 50 release the axial pressure exerted on the locking members 80 so that they move into their neutral position, i.e. engaged in the other retaining end 88 of the control slides 86.

[0134] In this way the separating element 62 is locked in its retracted position by means of the locking members 80 engaged in the retaining ends 88 of the control slides 86.

[0135] The transition of the separation element 62 from the deployed position to the retracted position is carried out in a manner similar to that described above, the tank 12 then being driven in rotation in a second direction S2 of rotation.

[0136] The method of moving the separation element 62 as just described is advantageous in that the first position of the tank 12 allows the separation element to be tilted from its retracted position to its deployed position outside the media, which limits the effort required for this purpose.

[0137] Thus, the tilting of the separation element 62 from one position to another does not require any effort on the part of the machine, this tilting being carried out solely by the rotation of the tank 12.

[0138] It should be considered that the movement of the cover 30 from its open position to its closed position and vice versa is carried out in a similar manner, by the cooperation between the engagement ends 44 and the actuators 50.

[0139] More precisely, the tank 12 is driven in rotation by the motor so that it is in its second position as seen in [Fig. 11], in which the engagement ends 44 extend axially opposite the actuators 50, seen in [Fig. 1].

[0140] Therefore, the actuators 50 are actuated in such a way that they exert axial pressure on the engagement ends 44 in order to allow their movement in the circular grooves 34.

[0141] It is then understood that at this stage, the engagement ends 44 are engaged with the actuators 50 in such a way as to maintain the guide members 40, which are attached to the cover 30, in a fixed position relative to the frame.

[0142] Subsequently, the tank 12 is rotated in the first direction SI so that the engagement ends 44 slide in their respective circular groove 34.

[0143] It is then understood that the displacement of the tank 12 in rotation along the first direction SI simultaneously with the locking in position of the lid 30 relative to the built via the engagement ends 44 attached to the actuators 50, positions the cover 30 in its open position as seen in [Fig. 12].

[0144] It is understood that the closing of the lid 30 is carried out following identical steps but in the second direction S2 of rotation of the tank 12.

[0145] We take advantage of the machine 10 as described in that the actuators 50 are common for the movement of the cover 30 and the separating element 62.

[0146] It is therefore possible to plan the integration of the separation device as just described into existing tanks and / or machines.

[0147] The process of degreasing and deburring the part using the degreasing and deburring machine described according to the embodiment example above will now be detailed using Figures 1 to 12.

[0148] The method can be implemented independently of the position of the separating element 62, whether the latter is in its retracted position or in its deployed position.

[0149] The process includes a first step in which the tank 12 is positioned in its second position in order to open the lid 30 as described previously.

[0150] Once the lid is in its open position as seen in [Fig.6], the part P to be deburred is placed in the internal volume 20 of the tank 12, comprising the media M1, M2.

[0151] In particular, part P is placed manually or by a motorized arm, on the layer of media M1, M2 extending into the internal volume 20.

[0152] Once the part P is positioned in the internal volume 20, a second closing step of the lid 30 is implemented.

[0153] It is understood in particular that the closing of the lid 30 is achieved by rotating the tank in the second direction S2 according to what was described previously.

[0154] The cover 30 is then in its closed position as seen in [Fig.7].

[0155] In the case where the separating element 62 is in its deployed position during the In the first step and / or the second step, the separating element 62 is moved into its retracted position as described previously, during a subsidiary step.

[0156] It is understood that such a subsidiary step is necessary in order to allow optimal treatment of the part by the media M1, M2, without hindrance by the claws 62 extending into the internal volume 20.

[0157] During a third step, the tank 12 is driven in rotation by the motor over several revolutions so as to proceed with the deburring of the part P by the media M1, M2.

[0158] During this third stage the piece will notably be mixed in the media Ml, M2 such that the repeated friction of the part P against the media Ml, M2 proceeds to its deburring.

[0159] For example, and without limitation, during the third step the tank 12 is driven in rotation over ten revolutions by the motor.

[0160] Once the part has been deburred, a fourth step is implemented in which the tank 12 is positioned in its first position, visible in [Fig.8], so as to move the separating element 62 into its deployed position as described previously and visible in [Fig.9].

[0161] In accordance with what was described previously, the claws 64 are moved into their deployed position outside of the media M1, M2 and part P.

[0162] Subsequently, in a fifth step, the tank 12 is rotated along the second direction S2, over at least one turn so as to separate the part P from the media M1, M2 thanks to the filtration provided by the claws 64, as seen in figures 10 and 11.

[0163] More precisely, during the fifth step, the structure of the claws 64 described above will allow the part P to be recovered progressively during the rotation of the tank 12.

[0164] In particular, during the penetration of the claws into the media M1, M2 as seen in [Fig. 10], the part P then positioned between one of the sides 22 of the shell and the claws 62 will be held outside the media M1, M2 which will pass between the claws 62 during the rotation of the tank 12 as seen in [Fig. 11].

[0165] Part P will then be found on the claws 62, and in particular on their convex parts, as seen in [Fig. 11], and outside the media M1, M2.

[0166] It is understood that depending on the position of part P in the media M1, M2, several turns of the tank 12 may be necessary in order to position part P on the claws 62 as seen in [Fig.1 1].

[0167] It is also understood that depending on the position of part P in media Ml, M2, the claws 64 will allow the positioning of part P above media Ml, M2 at the end of the fifth step.

[0168] Furthermore, depending on the size of the claws, it is possible that at the end of the fifth step, the part slips from the convex part of the claws and falls back onto the media, the objective of separating the part from the media still being achieved.

[0169] Once part P has been separated from media M1, M2, by being positioned on the claws as seen in [Fig. 11], or above media M1, M2, a sixth step is carried out in which the tank 12 is again positioned in its second position, seen in [Fig. 11], so as to move the lid 30 into its open position, seen in [Fig. 12].

[0170] This allows an operator or a machine, for example an articulated arm, to retrieve part P positioned on the claws or above the media M1, M2.

[0171] The advantage of the tank as described above, which includes the separation device, is that it allows for the simple and effortless retrieval of a part treated with abrasive media in a rotating tank. Indeed, the use of the separation device does not require any additional equipment in the machine; only gravity and the rotation of the tank are necessary for its operation.

[0172] Thus, the separation device as described is a passive system for separating a part from an abrasive medium, within a tank.

[0173] In addition, the separation device is advantageous in that it allows adaptation to tanks, parts and media of different dimensions, in particular by allowing modification of the number of claws and their spacing via removable fixings.

[0174] Moreover, the compactness of the separation device, in particular the claws which follow the shape of the tank when the separation element is in its retracted position, makes it possible to reduce the size of said tank, and therefore of the machine.

[0175] The separation device is also advantageous because filtering the part and positioning it above the media or on the claws allows for the automation of the part retrieval step, for example, by a robotic arm that can then easily detect the part within the tank's internal volume. Among other things, the separation device eliminates the need for additional sensors when the part retrieval step is automated.

Claims

Demands

1. A rotary treatment tank (12) for a dry degreasing and deburring machine (10), the tank (12) comprising at least one cylindrical shell (18) about a principal axis (R), the shell (18) delimiting an internal volume (20) intended to receive at least one workpiece (P) to be treated and an abrasive media (Ml), the shell (18) comprising at least one lid (30) movable between an open position of the internal volume (20) and a closed position of the internal volume (20), the tank (12) comprising a separation device (60) for separating the workpiece (P) to be treated from the abrasive media (Ml) within the internal volume (20) of the shell (18), the separation device (60) comprising at least one separation element (62) movable between a retracted position outside the internal volume (20), and a deployed position in which it extends at least partially into the volume internal (20) of the tank (18),the separating element (62) comprising a plurality of claws (64) having a curved shape that conforms to the cylindrical shape of the shell (18) in the retracted position of the separating element (62).

2. Tank (12) according to the preceding claim, in which each of the claws (64) is movable through an associated opening (68) formed through the shell (18), the separation device (62) comprising at least one guide assembly (74) of the separation element (62) capable of guiding the movement of the separation element (62) between its retracted position in which the claws (64) are entirely outside the internal volume (20) of the tank (12), and its deployed position in which the claws (64) are at least partly inside the internal volume (20) of the tank (12).

3. Tank (12) according to any one of the preceding claims, wherein the claws (64) each comprise a free end (70) intended to fit within the internal volume (20) when the separating element (62) is in its deployed position, the separating element (62) being configured such that the free end (70) of each of the claws (64) extends in the vicinity of the main axis (R) of the shell (18) when the separating element (62) is in its deployed position.

4. Tank (12) according to the preceding claim, wherein the free end (70) of each of the claws (64) is configured to close the opening (68) associated with its claw (64) when the separating element (62) is in its retracted position.

5. Tank (12) according to any one of the preceding claims, wherein the claws (64) are carried by a stringer (66) such that they extend parallel to each other and axially at a non-zero distance (D) from each other such that they allow at least the abrasive media (M1) to be differentiated from the part (P).

6. Tank (12) according to any one of the preceding claims, wherein the separating element (62) is movable about an instantaneous center of rotation (C), parallel and distinct from the principal axis (R) of the tank (12).

7. Tank (12) according to any one of the preceding claims in combination with claim 5, wherein the separation device (60) comprises at least two guide members (72) which each extend outside the internal volume (20) and kinetically between one of the openings (68) associated with one of the claws (64) and the stringer (66), each of the claws (64) being configured to cooperate with one of the guide members (72).

8. Tank (12) according to any one of the preceding claims, wherein the guide assembly (74) of the separating element (62) comprises at least one locking member (80) which is movable between a neutral position in which it locks the separating element (62) in position relative to the shell (18) in either of its retracted or deployed positions and a free position in which it allows the movement of the separating element (62) relative to the shell (18) towards its retracted position or towards its deployed position.

9. Dry degreasing and deburring machine (10) comprising at least one rotating treatment tank (12) according to any one of the preceding claims in combination with claim 8, the tank (12) being mounted in a frame (14) capable of rotating said tank (12) about its main axis (R), the frame (14) comprising at least one actuator (50) of the locking member (80) and of the cover (30), the actuator (50) participating in moving the locking member (80) from its neutral position to its free position and vice versa and participating in moving the cover (30) from its open position to its closed position and vice versa.

10. Dry degreasing and deburring machine (10) according to claim previous, in which the frame (14) is able to position the tank (12) in a first position in which the actuator (50) cooperates with the locking member (80), and in a second position in which the actuator (50) is able to participate in the movement of the cover (30).

11. Degreasing and deburring machine (10) according to any one of claims 9 or 10, wherein the actuator (50) comprises at least one pneumatic or hydraulic or electric cylinder.

12. A method for degreasing and deburring a part using a degreasing and deburring machine (10) according to any one of claims 9 to 11, the method comprising at least: - A first step in which the part (P) is placed in the internal volume (20) of the tank (12), the tank (12) including the lid (30) in its open position, - A second stage in which the lid (30) is tilted into its closed position, - A step in which the separating element (62) is moved to its retracted position if it is in its deployed position during the first step, - A third stage of rotating the tank (12) over several revolutions, - A fourth step in which the tank (12) is positioned in its first position so as to move the separating element (62) into its deployed position, - A fifth step in which the tank (12) is rotated at least once in such a way as to separate the workpiece (P) from the abrasive medium (Ml), - A sixth step in which the tank (12) is positioned in its second position so as to place the lid (30) in its open position.

Images