Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
  • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
  • B01F27/88—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with a separate receptacle-stirrer unit that is adapted to be coupled to a drive mechanism
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
  • B01F35/32—Driving arrangements
  • B01F35/323—Driving arrangements for vertical stirrer shafts
  • B01F35/3231—Driving several stirrer shafts, e.g. about the same axis
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
  • B01F35/42—Clamping or holding arrangements for mounting receptacles on mixing devices

Definitions

• the present invention relates to a piece of furniture, such as a piece of furniture for the stirring of the contents, such as paint, of mixing pots closed by a cover through which protrudes a driven shaft provided with a stirrer.
• a piece of furniture comprising a base, two uprights, shelf shelves arranged between said uprights, at least one of the shelf shelves comprising a shaft extending from one of the uprights in the direction on the other of said uprights, this shaft being coupled to a system for driving said shaft in rotation.
• the invention relates to a cabinet with shelves for stirring the contents, such as paint, mixing pots closed by a cover through which protrudes a driven shaft provided with a agitator, said piece of furniture comprising a base, two uprights, shelf trays disposed between said uprights and each delimiting a load bearing support plane, at least one of the shelf trays comprising a shaft extending from the 'one of the uprights in the direction of the other of said uprights, this shaft being coupled to a system for driving said shaft in rotation, characterized in that this shaft, supporting driving elements mounted integral in rotation with said shaft, is fixed to said shaft shelf shelf by means of bearings arranged axially offset along said shaft, in that said shaft is a hollow shaft having an axial longitudinal cavity extending over the entire length of said shaft and in that each driving element of the tree comprises a worm section mounted integral in rotation with said rotary shaft, this worm section of length less than the length of the rotary shaft surrounding the rotary shaft coaxially with said shaft.
• each drive element support shaft in the form of a hollow body gives flexibility to said support shaft.
• This flexibility allows high speed drive of the support shaft. It is thus possible to simplify the drive system of the support shaft and, in particular, to dispense with a reduction gear between the support shaft and the motor of the drive system.
• This flexibility allows a limitation of the wear of the shaft in the driven state in rotation of the shaft in a flexed position, this flexing resulting from the weight of the pots on the shelf and from the deformation of the shelf resulting in results.
• driving elements in the form of worm sections allows a reduction in cost without affecting the possibility for each driving element to cooperate with a driven element by engaging in a disconnectable manner by meshing of the driving elements and conducted during positioning of the pot in the cabinet to form an automatic drive head in movement of the agitator shaft of the mixing pot.
• the or at least one of the worm sections is threaded onto the shaft.
• the shaft thus passes through the worm section.
• the or at least one of the worm sections is removably attached to the shaft.
• the or at least one of the endless screw sections comprises a sleeve and a spiral winding arranged around the sleeve, the turns of the spiral winding forming the screw threads of the endless screw section, the turns of the winding and the sleeve being made in one piece.
• the or at least one of the endless screw sections comprises a sleeve and a spiral winding arranged around the sleeve, the turns of the spiral winding forming the screw threads of the worm section, the spiral winding being formed by a helical spring.
• the sleeve is provided with at least one radial through hole for fixing the sleeve to said rotary shaft.
• the sleeve is provided, at one of its ends, with a shoulder against which one end of the spring bears.
• the shoulder is an outer peripheral shoulder and the bearing surface of the shoulder against which one end of the spring bears is formed by part of an outer radial surface of the shoulder shaped in the form a portion of a helical ramp.
• the sleeve has, at one of its ends, a flat, against which one end of the spring bears.
• the drive system in rotation of the or at least one of the rotary shafts carrying driving elements comprises a motor with a motor axis coaxial with the rotary shaft and in engagement with said shaft, this motor being disposed at one end of the rotary shaft, in the extension of the rotary shaft.
• the bearings are formed by rings arranged axially offset along the shaft, said shaft passing through said rings.
• the bearings are arranged in the thickness of the shelf plate.
• FIG. 1 shows a perspective view taken from the rear of a piece of furniture according to the invention in exploded position of at least part of the elements of the piece of furniture;
• FIG. 2 shows a rear view of a piece of furniture according to the invention, a shelf top having been shown transparent to illustrate the deflection of the tree under the weight of the pots positioned on the shelf;
• FIG. 3 represents a partial sectional view of the cabinet of FIG. 1 equipped with mixing pots
• FIG. 4 shows a front view in partial section taken from the front of a piece of furniture according to the invention associated with a detail view
• FIG. 5 shows in perspective a detail view of the engagement of a leading element of a cabinet with a driven element
• FIG. 6 shows a partial top view of a driving element engaged with a driven element
• FIG. 7 shows a partial view of a shaft and two driving elements, one of which is mounted on the shaft.
• the cabinet 1 for stirring the contents of mixing pots 30, object of the invention comprises a base 2 and two uprights 4 between which the base 2 is arranged.
• This piece of furniture 1 with load support shelves further comprises shelf trays 3 arranged between the uprights 4 of the furniture above the base 2.
• Each shelf plate 3 comprises a top face and a bottom face and delimits on the face side of the top a load support bearing plane on which one or more mixing pots are able to be placed.
• At least each shelf top other than the uppermost shelf top can thus serve to receive mixing pots placed on said shelf.
• At least one of the shelf shelves 3, in this case each shelf shelf 3, comprises a shaft 7 extending from one of the uprights towards the other upright 4. This shaft 7 is , preferably, a smooth shaft and extends horizontally inside said cabinet 1.
• This shaft 7 preferably extends in a cantilever from one of the uprights 4 even if in a variant it can connect said uprights 4 together.
• This shaft 7 is arranged in the thickness of said shelf plate 3 which, in general, is made hollow.
• This shelf plate 3 can be formed by forming a sheet.
• the cabinet 1 comprises three shelves 3 shelves, each shelf plate 3 being disposed above the receiving location of the mixing pots 30 with which the elements of said tray are intended to cooperate.
• This location for receiving mixing pots is therefore delimited by the space left free between two shelf plates 3 or by the space left free between the bottom shelf plate 3 and the base 2.
• Such a shelf plate 3 supports by its top face the pots of the shelf located immediately above. Due to the design of the shelf top 3, there is a risk of bending deformation of the shelf top 3.
• the shaft 7 disposed in the thickness of the shelf plate 3 is fixed to said shelf plate 3 by means of bearings 17.
• These bearings 17 are arranged in the thickness of the shelf plate 30.
• These bearings 17 are, here, formed by rings arranged axially offset along said shaft 7, this shaft 7 passing through each of the rings.
• This shaft 7 is a rotary shaft and is coupled to a system 8 for driving in rotation of the shaft 7.
• This system 8 for driving in rotation which is at least partially housed in an upright 4, will be described. below.
• the presence of the bearings 17 allows a high speed of rotation of the shaft 7.
• the speed of rotation of the shaft 7 is at least equal to 800 rev / min. This results in the possibility of dispensing with a reduction gear at the level of the drive system 8.
• the shaft 7 is a hollow shaft having an axial longitudinal cavity 71 extending over the entire length of the shaft. This cavity thus allows the shaft 7 to deform.
• the shaft 7 is a tubular hollow of circular section preferably made of metal.
• the axial longitudinal cavity 71 is thus through and opens at each end of the shaft 7.
• This shaft 7 supports a plurality of driving elements 6 mounted integral in rotation with the shaft 7.
• the mixing pots 30 which may contain, for example, paint consist of a generally cylindrical body closed by a cover 31.
• This cover 31 is equipped, in a manner known per se, with means for distributing the contents of the pot, such as a pouring spout, and with a stirrer 33 for the contents of the pot.
• This stirrer 33 is constituted by a shaft 32 housed inside the pot 30 and projecting through the cover 31 of the pot 30.
• the part of the shaft 32, housed inside the pot is equipped with at least one blade allowing agitation of the contents of the pot 30 during a rotational drive of this shaft 32.
• the other free end of the shaft 32, projecting above the cover 31 of the pot 30, is equipped with a driven element 34 engaging with a leading element 6 during the positioning of the pot 30 in the cabinet 1.
• the driven element 34 is, in the example shown, formed by a pinion coaxial with the driven shaft 32 provided with an agitator 33 and called a mixer shaft 32 of the pot 30.
• Each leading element 6 is a section of worm adapted to come into engagement by meshing with the pinion constituting the element 32 driven from a mixing pot 30 in the position of a nearby mixing pot 30 of said leading element 6.
• the driving 6 and driven 32 elements engage in a disconnectable manner by meshing during the positioning of the mixing pot 30 in the cabinet 1 to form an automatic drive head in movement of the agitator shaft 32 of the mixing pot 30.
• the system 8 of drive in rotation comprises a motor 81 per shaft 7.
• This motor 81 is arranged at one end of the rotary shaft 7 in the extension of the rotary shaft 7 and has a motor shaft 82 coaxial with the rotary shaft 7 and in engagement with said shaft 7.
• the motor 81 is housed in an upright 4 in the form of a hollow section of the cell and the motor shaft 82 passes through a wall of the upright 4 to engage by interlocking with the shaft 7 which extends between the uprights 4.
• each shelf plate 3 carries a plurality of driving elements 6.
• Each element 6 leading comprises a worm section 9 mounted integral in rotation with the rotating shaft 7.
• This endless screw section 9 surrounds the rotary shaft 7 coaxially with said shaft 7 and is of shorter length than the length of the rotary shaft 7.
• Each endless screw section is a part attached to the rotating shaft 7.
• this section 9 of the screw is threaded onto the shaft 7 and is removably attached to the shaft 7 using a locking means, of the rivet type.
• the number of worm sections can vary from one shaft 7 to another.
• this number of screw sections can be adapted to the format of the mixing pots which can be different from one shelf to another.
• each section 9 of the worm is threaded onto the shaft 7.
• each section 9 of the worm comprises a sleeve 10 and a spring 1 1 arranged helical around the sleeve 10.
• the turns of the spring 1 1 form the screw threads of the section 9 of the worm.
• the sleeve 10 is provided, at one of its ends, with a shoulder 14 against which one end of the spring 1 1 bears.
• This shoulder 14 is an outer peripheral shoulder forming a collar around the sleeve.
• the face of the collar facing the end of the sleeve, other than that equipped with the shoulder forms a surface of the radial shoulder to the sleeve.
• this radial surface is shaped in the form of a helical ramp portion 15 which forms the bearing surface of one end of the spring 1 January.
• the other end of the coil spring 1 1 rests on a portion of the sleeve adjacent to the end of the sleeve opposite to that provided with the shoulder 14.
• the sleeve 10 has, at this end, a flat 16 against which said end of the spring 1 1 bears.
• This flat 16 is provided on the outer surface of the delimiting wall of the sleeve in the vicinity of one end of the sleeve 10. Thanks to this arrangement, the spring 1 1 can be easily mounted on the sleeve 10 or removed from the sleeve 10.
• the worm section 9 comprises a sleeve 10 and a spiral winding disposed around the sleeve and made in one piece with the sleeve 10.
• the sleeve 10 is provided with a through radial bore 12. This attachment is preferably removable.
• a fixing member 13 such as a rivet, is introduced into the radial bore 12 passing through the sleeve and comes to bear on or in the body of the shaft 7.
• each shelf plate 3 is equipped with means for maintaining the pot 30 in position between two shelves, in a fixed manner in rotation.
• These holding means are well known to those skilled in the art and can take a large number of forms. Generally, these holding means are arranged at the level of the shelf plate 3 forming the upper part of the location for receiving mixing pots 30. It should be noted that each pot is, when inserted into a location, resting on the floor portion of said location, i.e. the base of the cabinet for the lowest pot receiving location or the top face of the cabinet. shelf 3 for other locations for receiving pots.
• the means for maintaining in position here affect the shape of a stirrup delimiting a half-collar capable of gripping the mixing axis of the pot, this stirrup being disposed on the shelf plate 3 at the level of the plane passing through the axis of the mixing pot and the section of screw with which the pinion of the axis of the mixing pot engages.
• the immobilization in rotation of the mixing pot is preferably effected by means of a wire yoke or a clip system.
• the shelf plate 3 forming the upper part of a location for receiving mixing pots 30 is hollow to accommodate a shaft 7 carrying the driving elements 6.
• each shelf plate 3 is, on its edge, provided with windows at the level of which is arranged one of the driving elements 6 of the shaft 7 for an engagement of the leading element with the element. driven from a mixing pot to the positioned state of the mixing pot between the uprights of the cabinet 1 with the driven element of the mixing pot extending opposite the leading element.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Mixers Of The Rotary Stirring Type (AREA)
• Accessories For Mixers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=67002013

Family Applications (1)

Country Status (4)

Family Cites Families (7)

• 2019
  • 2019-02-15 FR FR1901567A patent/FR3092771B1/fr not_active Expired - Fee Related
• 2020
  • 2020-02-12 WO PCT/FR2020/050251 patent/WO2020165539A1/fr unknown
  • 2020-02-12 CN CN202080014183.6A patent/CN113518661A/zh active Pending
  • 2020-02-12 EP EP20710213.8A patent/EP3924093A1/fr not_active Withdrawn

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