EP2557960B1 - Dispositif et procédé de fabrication de brosses - Google Patents

Dispositif et procédé de fabrication de brosses Download PDF

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Publication number
EP2557960B1
EP2557960B1 EP10787032.1A EP10787032A EP2557960B1 EP 2557960 B1 EP2557960 B1 EP 2557960B1 EP 10787032 A EP10787032 A EP 10787032A EP 2557960 B1 EP2557960 B1 EP 2557960B1
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EP
European Patent Office
Prior art keywords
bristles
tufts
base part
opening
bristle tufts
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.)
Active
Application number
EP10787032.1A
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German (de)
English (en)
Other versions
EP2557960A1 (fr
Inventor
Bart Gerard Boucherie
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.)
GB Boucherie NV
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GB Boucherie NV
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
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Priority to EP10787032.1A priority Critical patent/EP2557960B1/fr
Publication of EP2557960A1 publication Critical patent/EP2557960A1/fr
Application granted granted Critical
Publication of EP2557960B1 publication Critical patent/EP2557960B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles
    • A46D1/06—Machines or apparatus for cutting bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/08—Preparing uniform tufts of bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/08—Parts of brush-making machines
    • A46D3/082—Magazines for bristles; Feeding bristles to magazines; Knot picking
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A46D9/02—Cutting; Trimming

Definitions

  • the invention relates to a method and an apparatus for producing brushes.
  • a brush body is provided with an array of holes ("hole pattern") corresponding to the desired arrangement of bristles. Bundles or tufts of bristles are then inserted into the holes of the brush body and anchored therein by means of impressed small metallic anchors or by means of loops.
  • the bristle tufts are attached to a small brush head plate without the use of loops or anchors. and the carrier plate is then inserted into or attached to a brush body or handle.
  • brush handles are made with a hole pattern that corresponds to the desired tuft pattern. Bristle tufts are then inserted into these holes and attached to the brush handles. The attachment ends of the tufts are then covered with a small plate.
  • the present invention relates to a method and apparatus for making brushes based on this AFT method.
  • tufts of bristle stock are removed in succession, that is to say sequentially, and transported to form a base part.
  • This base part may be either a kind of plate, which is then connected to the brush body, or be a portion of the brush body itself.
  • the front side of the base part is the side from which the bristles of the later brush protrude, whereas the back side is the usually closed, that is bristle-free, side.
  • the individual tufts are stuffed into the openings either via a device-side support or holder, which rests against the base part, a guide-free gap between the base part and the device is present in the method according to the invention.
  • the bristle tufts must be pushed through this gap from the device into the base part. A wear on the device can not come about thereby.
  • the position of the base part is aligned with the stationary tool for pushing for each hole to be filled and thus moved.
  • One possibility for this is to move the base part for the sequential piercing at least in two directions, in order to align the opening to be filled with the bristle tufts to be inserted.
  • This method is, as immediately apparent, very easily adaptable to completely new tufts.
  • the method can be adapted very quickly to new patterns if the base part is moved using a freely programmable, at least 2-axis positioning device, in particular a freely programmable, preferably 2-axis industrial robot.
  • the bristle tufts are transported sequentially by a tuft picker to the final position, from which they are pushed axially into the opening to be filled.
  • a tuft picker For the separation of the bristle tufts as well as for the transport, only one movement is required, which can be, for example, a circular arc movement or a linear movement of the tufts collector.
  • the tuft picker does not necessarily have to move back and forth between the pickup position and the dispensing position. It would also be conceivable to provide a ring or circular tuft picker which rotates permanently in one direction.
  • the bristles used are made of plastic.
  • the back stuffing of the bristle tufts has the advantage that the tufts protrude so far from the base part as far as possible, thanks to a usually front stop, as desired, regardless of the length tolerances of the individual bristles.
  • bristles with pre-machined bristle tips for example, rounded, pointed bristle tips or the like may optionally be used.
  • the bristle tufts is not clamped radially.
  • clamping namely, the tuft end could widen in the gap, which would make it difficult to insert into the openings.
  • Such a radial clamping force will occur in particular in so-called tenter.
  • the gap height measured perpendicularly to the rear side of the base part, should in particular be greater than half the diameter of the bristle tuft; in particular, the gap should be more than twice the cross section of the openings in the base part.
  • the gap exists between the edge of the openings and the transport device, but in particular the gap is even so large that the device is completely spaced from the rear side of the base part.
  • the base part usually has a small thickness and the length of the openings over which the tufts are held, also correspondingly low, provides an advantageous method step, that a guide member is positioned on the device side with through holes before inserting the tufts on the front of the base part ,
  • the bristle tufts are inserted through the openings in the through holes in the guide part.
  • the tufts protrude on the front even out of the guide part.
  • the front ends of the tufts may contact a profiled pressure member during or after loading of the base member to provide a profiled brushing surface.
  • the brush surface is the front side working surface of the brush formed by the bristle ends.
  • This pressure part can either already be present during the plug and serve as a stop or pressed against the bristles after the plug, so that they rest against the pressure part and image the shape of the pressure part.
  • the bristle tufts protruding from the back of the openings of the base part are cut off after being pushed in according to the preferred embodiment.
  • the tolerances of the individual bristle lengths are thereby fully compensated, because on the front can be done on the printing part a precise length adjustment, the back is then simply cut off.
  • This cutting can be done by cutting tools or a heated tool, especially a so-called hot knife. There is a contact between the hot tool and the individual tufts, the life of the cutting tool is very high.
  • the bristle tufts are attached on the back, for example by thermal fusion and / or gluing and / or embedding in a molded plastic compound. Of course, these attachment methods can also be combined with each other arbitrarily.
  • the bristles stuffed into the base part are preferably pre-rounded or preprocessed in advance.
  • the tufts are held radially only from the base part and, if present, the guide part. At the two ends no lateral fixation is provided, the ends are only frontally on the device and are thus fixed axially.
  • the back of the bristle tufts and the base part is covered.
  • This can be done, for example, that the brush body has a recess in the region of the back tuft ends, which is closed by a prefabricated or molded lid part.
  • Another possibility of covering the bristle tufts on the back is to form a prefabricated cover part on its side facing the base part with molded-on projections, so-called sacrificial structures, which soften during the subsequent heating, in particular become liquid, in order then to strike against the base part or, more generally to be pressed against the brush body.
  • the brush body can also be provided with such sacrificial structures in order, after its heating, to be connected to the possibly also heated base part.
  • This lid member may be provided with protruding cleaning protrusions in any shape to be used as a tongue cleaner or the like.
  • the base part is overmolded. If the base part is not already on the brush body at the same time, but rather a part to be fastened to the remainder of the brush body, the base part can be overmolded during production of the brush body.
  • the encapsulation of the base part is not limited to this variant.
  • a particularly advantageous embodiment of the invention provides that the bristle tufts are attached to the back anchorless, in particular by fusing and / or gluing and that the assembled base is then inserted from a Beborstungsstation in a cavity of a mold half of an injection mold and thereby with its edge on the edge of a from the associated cavity outgoing opening rests and the bristle tufts protrude into the opening.
  • a brush section is molded onto the base part, which covers the bristle tufts.
  • the bristle ends of the bristle tufts were first fused together, which was usually done in the hole plate equipped with the bristle tufts and produced in a complex manner. Subsequently, this perforated plate was transported in an injection mold to overmold the tufts.
  • the bristled base part was always transported in the prior art, including the support plate in an injection molding tool or another station of an injection molding tool.
  • the carrier plate served to support against the injection pressure during injection molding of the brush body (head and stem).
  • the present invention provides that these provided with the hole pattern of the brush carrier plates when making the brush body no longer provide as support plates in the injection mold.
  • an opening in the region of the cavity to be ejected is provided in a mold half of the injection molding tool into which the plurality of bristle tufts protrude.
  • the base part is located exclusively or almost exclusively only with its peripheral edge on the edge of the cavity extending from the opening and is preferably supported only at this edge.
  • the base part is held on the edge in the cavity.
  • the base part lies with its edge closed circumferentially on the likewise closed circumferential edge of the opening, so that a sealing effect is achieved.
  • the entire production and the entire apparatus can manage with significantly less perforated plates.
  • a plurality of cavities are provided in the mold half of the device according to the invention in order to increase the discharge rate of the entire device.
  • the mold half with the at least one cavity can also, and this is preferably formed in several parts.
  • a first and a second molded part if appropriate also further molded parts with in particular a plurality of juxtaposed cavities or rows of cavities, can be used.
  • the cavity associated with a brush is then divided into several sections, for example into a section in the first and into a section in the second shaped part. These cavities merge into one another and form the total cavity of the mold half.
  • the first molded part is separable from the second molded part and may u.U. as a means of transport or ejection tool for the one or more seated in it base parts.
  • the first molded part can be fitted independently of the second molded part first with the bristled base parts and only then be coupled to the second molded part, namely immediately prior to injection molding.
  • the first molded part is very easy to produce due to the lack of hole pattern, many first molded parts can be manufactured and used relatively inexpensively, which significantly improves the cycle time and flexibility of the entire device.
  • the so-called brush body could be injected in the injection molding tool, which can be designed in one or more parts.
  • This brush body is usually the brush handle, the brush neck and a part of the brush head.
  • the other part of the brush head is formed by the base part.
  • the base part itself already has almost the entire head and essentially the entire handle or stem of the brush.
  • this base part also forms a brush section and is then bristled and then overmoulded, at least in the back of the head or in the style area.
  • elastomeric profile parts which have any cross-sectional shapes, can be injected or injected or fastened in openings. These profile parts are not bristles, but different profile parts with smaller or larger cross-sectional area than the usual bristles.
  • the parts can also have a cross-sectional shape deviating from the circular shape. In particular, such profile parts are used to produce a gum massaging effect.
  • the aforementioned other way to close the tuft-free openings is in the back molding of plastic.
  • either only the tuft-free openings can be closed, or it can front side projecting profile parts are molded with at the same time.
  • the front-side guide part can serve as an injection mold.
  • the bristle tufts are separated from the bristle supply to the side of the bristle longitudinal direction and, in particular, moved individually to the openings via the transport device.
  • no transport tubes known in the prior art are used for the transport device, which dip into the supply in the longitudinal direction of the bristles and receive and clamp a tuft of bristles.
  • high cycle times can be realized by the lateral removal, and on the other hand, the tufts are significantly less or not compressed at all, which improves their positioning when entering the openings.
  • the invention also provides a device for producing brushes, in particular a so-called brush-making machine, which preferably uses the aforementioned method according to the invention.
  • the apparatus comprises a magazine having a bristle stock in which bristles are packed in parallel, a bristle tuft picking unit sequentially picking bristle tufts from the bristle stock laterally to their longitudinal extent, transporting the individual bristle tufts to a stuffing station, the stuffing station comprising a holder for base parts of the brush to be installed, and means by which the bristle tufts are sequentially inserted and pushed through the base part, bridging a guide-free gap adjoining the rear side of the base part, from the rear side.
  • the device comprises a closed-loop receiving device, for example a receiving table, a chain, an index table or, more generally, a type of circle with receptacles for the base parts on which they are moved, to individual stations, e.g. to cut through the bristle tufts and attachment of the tufts and optionally closing the back of the open brush body or molding of the brush body.
  • a closed-loop receiving device for example a receiving table, a chain, an index table or, more generally, a type of circle with receptacles for the base parts on which they are moved, to individual stations, e.g. to cut through the bristle tufts and attachment of the tufts and optionally closing the back of the open brush body or molding of the brush body.
  • the removal device is integrated into the transport device.
  • the transport device moves the tufts along a linear or curved path to the stuffing station.
  • Such so-called tufts are in the EP 0 972 465 B1 shown.
  • the device according to the invention preferably further comprises a tuft picker, which transports the tufts sequentially to the final position, from which they are pushed axially into the opening to be filled.
  • a tuft picker which transports the tufts sequentially to the final position, from which they are pushed axially into the opening to be filled.
  • the device according to the invention also comprises a station in which the base part for the sequential piercing is moved at least in two directions in order to align the opening to be filled with the bristle tufts to be filled, this station in particular having a freely programmable, preferably 2-axis industrial robot Has shift of the base part.
  • the preferred embodiment provides for integrating a cutting device into the device with which the bristles protruding from the base part on the rear side are cut off.
  • the cutting device is moved transversely to the bristles without any support.
  • the bristles are cut off at the back by acting as a counter knife a device-side support plate through which the tufts protrude. This plate stabilizes the tufts and on the surface of the plate a knife is driven along, which cuts off the tufts.
  • this type of cut is reliable, but leads to wear of the cutting device and is therefore maintenance and spare part intensive than the device according to the invention, in which no support plate is provided on the tool.
  • this support-free cutting is preferably easy to implement by a heatable tool in which the hot tool contacts the bristles and cuts.
  • the heatable tool is in particular formed with a current-carrying heating wire, which may be a round wire or a flat wire, wherein in experiments with the flat wire very good results have been achieved.
  • the bristles are welded together in tufts or in total and / or glued and / or potted.
  • the device-side guide member which is fed to the front of the base member is moved along with the base member from station to station and positioned the tufts.
  • the device has an deliverable profiled pressure part which contacts the bristle tufts during or after the stopper.
  • a counter-pressure part can be driven from the back against the tufts.
  • the brush has a brush body 10 with a brush head, which in the following forms a base part 12.
  • the base part 12 has numerous passage openings 14, which are filled with bristle tufts 16, which are fastened to the base part 12.
  • FIG. 1 It can be seen that a transport device 18, which will be explained in more detail below, transported individual bristle tufts 16 through a device from the transport device 18 are pushed into the openings 14 from the rear side of the base part 12.
  • the transport device 18 has a receiving opening 22 which is filled with a bristle tuft 16 and moved to the base part 12.
  • the device 20 comprises a linearly movable plunger 24, which is inserted axially into the receiving opening 22 in order to push the bristle tufts 16 into the opening 14 of the base part 12 aligned with the receiving opening 22.
  • the base part is moved along two axes and aligned with the opening to be filled 14 on the bristle tufts 16 to be introduced.
  • a device-side guide part 26 preferably in contact with the front side of the base part 12, whose through-holes 28 are aligned with the openings 14 to be populated.
  • the bristle tufts 16 are so deeply into the base member 12 and the guide member 26 from the back of the base member 12, that is, from the back of the brush 10, pushed in that they protrude from the front of the guide member 16 again and abut against the stop member 30.
  • the stop member 30 is removed. Instead, a pressure member 32 is moved from the front axially to the bristle tufts 16 upwards, so that it contacts all the bristle tufts 16. The top of the pressure member 32 is profiled to form a complementary brush surface (formed by the front ends of the bristle tufts 16).
  • the bristle tufts 16 are pressed back up in part and are unevenly back against the base member 12 out.
  • a counterpressure part 36 complementary to the pressure part can be provided on this rear side so that the bristle tufts 16 can be axially fixed between the pressure part 32 and counterpressure part 36 as far as possible without play.
  • one of the pressure parts 32, 36 either elastically or elastically mounted.
  • the front ends of the bristle tufts 16 have an exact alignment with the base part 12.
  • bristle tufts 16 are attached at the back. This attachment is done for example by welding.
  • FIG. 1e One way of welding is in Figure 1e shown in which a hot plate 38 is pressed against the bristle tufts 16.
  • the back ends of the thermoplastic bristles fuse together, preferably to form a continuous layer 40 (see FIG FIG. 1f ).
  • the pressure part 32 preferably remains on the bristle tufts 16.
  • the pressure part 32 can now be removed (FIG. Figure 1g ), and then a rear lid part 40 is applied to the back of the base part 12, at least in the region of the ends of the bristle tufts 16 welded together.
  • This cover part 40 may be a prefabricated part.
  • the lid member 40 may also be made by injection molding to the base member 12 or to the brush body.
  • the aforementioned use of sacrificial structures on the lid or on the brush body can also be used.
  • the guide member 26 it is preferable (not limiting) for the guide member 26 to be supported on the base member 12 to provide support and sealing.
  • FIG. 2 Further details of a possible embodiment of the station of the device according to the invention, in which the bristle tufts 16 are separated and transported to the base part 12.
  • the device has its own station with a magazine 42, in which a bristle supply 44 is housed.
  • the bristles are aligned in magazine 42 parallel and ungrouped housed. They are pressed by adapted pressure means in the direction of the transport device 18.
  • the transport device 18 includes in the present, also not limiting embodiment to be pivoted about a pivot axis 46 to be pivoted removal device 48 with a plate-shaped bundle pickup, in the illustrated embodiment, a so-called circular arc having a receiving opening 50 for a bristle tufts 16.
  • the receiving opening 50 is open on the side facing the brush holder 44 side. If the bundle taker to the right, based on FIG. 2 , is pivoted, the receiving opening 50 comes in contact with the bristle supply 44. Due to the bias of the bristle supply 44 in the direction of this receiving opening 50, so many bristles press into the receiving opening 50, that it is completely filled.
  • the separation of the bristle tufts 16 thus takes place laterally to the longitudinal extension of the bristles, which in the present case would be perpendicular to the plane of the drawing.
  • the receiving opening 50 When the receiving opening 50 is filled with bristles, it is pivoted clockwise and in the in FIG. 2 shown position moves.
  • a guide plate 52 which conforms to the shape of the plate 48, ensures that no bristles can fall out of the receiving opening 50.
  • a linear method can also be used.
  • the bristle tufts 16 From the transport device 18, the bristle tufts 16 directly, without the interposition of a support plate or the like, directly into the base part 12 encountered. It should be noted that the individual bristle tufts are removed sequentially from the magazine 42 and transported with the tuft picker to their final position before impact. A transfer to subcarrier is avoided here.
  • the base portion 12 has numerous openings 14 which must be successively filled with bristle tufts 16, the base portion 12 is moved in two directions X, Y. In order to be filled openings 14 are aligned with the receiving opening 50 and the next bristle tufts 16 to be injected.
  • the corresponding station preferably has a so-called X-Y carriage, on which the base parts 12 can be fastened and moved in one plane.
  • a so-called X-Y carriage is a simple embodiment of a freely programmable, at least 2-axis positioning device, in particular a freely programmable 2-axis industrial robot.
  • FIG. 3 shows the magazine 42 with the tuft stock 44 in perspective view. To clarify the entire station several parts have been omitted.
  • FIG. 3 further shows a bristle tufts 16, which is being pushed by the device 20 into an opening of the base part 12.
  • a holder 54 positions and locks the guide member 26 to an alignment unit, such as an XY carriage, through which alignment of the base member 12 with the receiving aperture 50 occurs.
  • FIG. 4 shows that the bristle tufts 16 project from the guide member 26 on the front side after being pushed into the openings 14 of the base part 12. However, the bristle tufts 16 are also in front of the base part 12, either directly after the impact or after the start of the pressure part 32.
  • the loading with the bristle tufts 16 is in FIG. 5 shown in more detail. It can be seen that the bristle tufts 16 accommodated in the transport device 18 are spaced from the rear side of the base part 12 before being inserted into the openings 14. The transport device is spaced from the base part 12 in the region of the openings 14 via a gap 60 with the gap thickness d. This gap 60 is bridged by no guide member or the like.
  • the transport device 18 is spaced.
  • a corresponding gap D shows the smallest distance between the transport device 18 and the rear side of the base part 12.
  • this gap D could also be zero, but the gap 60 is always present.
  • the openings 14 are preferably provided on the back with a flared chamfer 62.
  • the base part 12 has a depression 64 in the region of the openings 14 on the rear side. In this recess 64, the lid member 14 is introduced or molded.
  • the transport device 18 is designed so that during the insertion of the bristles into the openings 14 in the transport device 18 exclusively axial pressure (that is, pressure in the bristle longitudinal direction) is exerted on the bristle tufts 16 to be introduced. That is, the wall around the receiving opening 50 is rigid, no radial clamping force is exerted on the bristles. The only clamping force is achieved by the bias in the bristle supply 44, which is forwarded so to speak in the receiving opening 50 when separating the bristles.
  • the cutting of the bristle tufts 16 preferably takes place in a separate station of the device according to the invention, preferably by means of a heated tool.
  • FIG. 6 shows an embodiment of such a heated tool 70, which comprises a current-carrying, hot wire.
  • This wire is moved substantially parallel to the back of the base part 12, as close as possible to the base part 12 along and separates the protruding bristle ends. Bristles can also partly melt together.
  • FIG. 7 shows the effects of heat on not yet cut bristle tufts 16, which merge together. In addition, however, the already separated ends of remaining in the base part 12 bristle tufts 16 merge, which is advantageous for positioning and attachment.
  • FIGS. 8a to 8c a While in the Figures 5 and 6 a substantially circular cross-section wire as a tool 70 is shown in the FIGS. 8a to 8c a to see alternative embodiment with a so-called flat wire. This also current-carrying, heated wire is placed like a knife obliquely to the bristles to be separated.
  • the bristle tufts 16 are not laterally supported in the region of their interface. Also, the tool 70 is not supported in the region of the base part 12, so that no wear occurs during cutting. The cutting takes place, so to speak, without support.
  • the bristle tufts 16 are either laterally only through the base part 12 (see FIGS. 8a to 8c ) or held by the base part 12 and the guide member 26. In the axial direction, the bristle tufts 16 are positioned between the pressure part 32 and the counter-pressure part 36. This positioning should, but not in a limiting sense, be ensured even during cutting.
  • the cutting is preferably carried out over the head, that is to say with the back side downwards (see, for example, FIG. 8 ).
  • the severed ends 72 simply fall down.
  • the fastening of the bristle tufts 16 on the base part 12 takes place, as stated, either by welding and / or by gluing and / or by casting, for example during the production of the cover part 40.
  • the cover part 40 can in particular rear projecting cleaning projections 80 have to form a tongue cleaner.
  • the supplied cover part 40 can be subsequently pressed or glued, even using the aforementioned sacrificial structures.
  • openings 14 must be closed by a bristle tufts 16. It may, as already mentioned, even one or the other opening 14 remain unfilled. When later gluing or potting or injection molding, the corresponding opening 14 is then closed.
  • FIG. 6 it is also possible that some openings with an elastomeric profile member 82 are fitted, as exemplified in FIG. 6 is shown.
  • the corresponding opening 14 in the base part 12 corresponds to this one-piece profile part, whose cross section is significantly larger than that of a bristle tufts 16.
  • the profile part 82 can serve as a massage extension for gums or the like.
  • the profile part 82 may either be prefabricated and then be mounted in the opening or sprayed immediately into / at the opening.
  • FIG. 9 a device for producing the brush according to the method described above is shown.
  • This device is designed as a tool, for example with a rotating table 100.
  • each bristle tuft 16 is moved individually to the base part 12 (in this case the brush body 10) via the removal device 48 and the transport device 18, wherein previously the brush body 10 is placed on the guide member 26.
  • a magazine with empty guide parts 26 may be present and is not shown here for clarity.
  • each individual bristle tuft 16 is stuffed into the associated opening 14 by moving the laterally held guide part 26 in the X and Y directions.
  • the finished assembled base 12 is then moved to the tool table 100 and attached to this.
  • the rotating tool table 100 transports one or more of the base parts 12 to a station in which Figure 1c Pressure and counterpressure 32, 36 align the tufts.
  • the tufts are cut off at the back by means of the tool 70. This cutting can take place in a subsequent station or in the station in which the pressure and counterpressure parts 32, 36 are applied for the first time.
  • the bristle tufts 16 are attached on the back, for example under the action of heat.
  • lid part 40 is sprayed on.
  • the finished brushes are removed and stacked, for example.
  • the transport of the guide members 26 into the first station is not explicitly shown.
  • FIGS. 10 to 13 an injection molding tool is shown, which can be used as another station in a multi-station device for producing brushes.
  • the injection mold is in FIG. 10 illustrated stylized and includes a multi-part lower mold half 140 and an upper mold half 142, each having cavities, which merge into one another in the closed state of the tool and form a cavity to be ejected.
  • the lower mold half 140 comprises at least two parts, namely a first mold part 144, which in the Figures 11 and 13 is shown in more detail, and a second mold part 146.
  • the mold parts 140, 142 include a plurality of juxtaposed cavities 156th
  • the first molded part 144 has in the region of each cavity 146 an opening 148 which extends from the cavity 146 and which serves to receive the bristle tufts 16 of a base part 14.
  • the edge 150 which is recessed and part of the cavity 146, surrounds the respective opening 148. This edge 150 serves as a support and support surface for the bristled base part 12.
  • the cavity 146 also has a neck portion 152 as a transition between brush head and brush handle.
  • This neck portion 152 is how FIG. 10 shows, in the stem of the brush defining or receiving portion 156 of the cavity in the second mold part 146 via.
  • only one opening 148 is provided for receiving all bristle tufts 16 of a base part 12. This makes the production of the first molding 144 particularly cost effective.
  • the opening 148 is designed either as a complete passage opening or as a blind hole. In any case, it must be ensured that the opening 148 is deep enough so that the front ends of the bristle tufts 16 do not protrude from the opening and abut an adjacent part such as the bottom of the recess 160 in the second mold part 146 or at the bottom of a blind hole-like opening 148 , The bristle tufts 16 thus project freely downwards.
  • the back not yet overmolded base parts 12 form according to the preferred embodiment of the head and stem of the brush. It is possible that in the head a bristled part is present, which is then encapsulated to form the stem. However, according to the preferred embodiment, the head and stem are integral, and the head has the openings 14 for receiving the bristle tufts 16.
  • the guide member 26 thus does not migrate together with the bristled base member 12 to the injection molding station.
  • Either the bristled base member 12 is then transported by machine or by hand to the first mold part 144 and inserted there into the openings 148, or there is provided an intermediate storage between Beborstungsstation and injection molding in which bristled base members 12 are stored.
  • the base part 12 After insertion into the injection-molded tool, the base part 12 lies in the cavities 146, 156. Subsequently, the upper mold half 142 is moved downwards in order to close the injection-molding tool.
  • FIG. 12 the inserted base part 12 can be seen, wherein the base part 12 is cut off only in the neck area for the sake of simplicity.
  • FIG. 12 In FIG. 12 are also the back together welded bristle tufts 16 shown.
  • the base part 12 has the back of a trough-like depression, which is filled with closed injection molding tool by liquid plastic.
  • the injected plastic closes the brush head on the back.
  • portions of, for example, the stem may be overmolded or molded with a second component in this or in another method step.
  • the base part 12 could consist only of the brush head or a part of the brush head, and the remaining partial areas would then be injection-molded in the injection molding tool
  • the base part 12 is supported only at the edge of the opening 148.
  • the bristle tufts 16 are not supported. This considerably simplifies the injection molding tool.
  • the base part 12 lies with its edge closed circumferentially on the likewise closed circumferential edge 150 of the opening 148, so that a sealing effect is achieved.
  • the first mold part 144 is removed with the brush body the injection mold and either transported to another injection molding station or fed as a finished brushes a camp.
  • FIG. 14 it would be according to FIG. 14 also possible to provide outgoing from a bottom of the opening 148 or from the second mold part 140 in the region of the recess 160 outwardly projecting into the opening in the direction of the base part 12 supporting extensions 170.
  • the support extensions 170 are linear or, as shown, selective support points and preferably run conically towards the base part 12 in order to be able to slide between bristles. Also in this embodiment, however, there is no outgoing at the top 150, bridge-like support that extends between the bristle tufts 16 and the support is used.
  • the opening 148 is so large that all or at least some bristle tufts 16 protrude into the common or common opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)

Claims (15)

  1. Procédé pour la fabrication de brosses (10) au moyen d'un dispositif, caractérisé par les étapes suivantes :
    le prélèvement séquentiel de touffes de poils (16) dans une réserve de poils (44) dans laquelle les poils sont logés en paquets parallèles,
    le transport de la touffe de poils (16) prélevée au moyen d'un dispositif de transport (18) jusqu'à une pièce de base (12) formant une partie de la brosse finie et présentant des ouvertures (14) pour le logement de touffes de poils (16) individuelles,
    l'enfoncement séquentiel de la touffe de poils (16) dans l'ouverture associée (14) depuis le côté arrière de la pièce de base (12), un intervalle (60) dépourvu de guidage étant prévu entre le dispositif de transport (18) et l'ouverture (14), à travers lequel les touffes de poils (16) sont enfoncées dans l'ouverture (14), et
    la fixation sans ancrage des touffes de poils (16) sur la pièce de base (12).
  2. Procédé selon la revendication 1, caractérisé en ce que pour l'enfoncement séquentiel, la pièce de base (12) est déplacée dans au moins deux directions, en particulier en utilisant un dispositif de positionnement librement programmable et présentant au moins deux axes, plus particulièrement un robot industriel librement programmable et présentant de préférence deux axes, afin d'aligner l'ouverture (14) à remplir sur la touffe de poils (16) à enfoncer.
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'au moyen d'un élément de prélèvement de touffes, les touffes de poils (16) sont transportées séquentiellement jusque dans la position définitive à partir de laquelle elles sont enfoncées axialement dans l'ouverture (14) à remplir et/ou en ce que pendant l'enfoncement, exclusivement une pression axiale est exercée sur la touffe de poils (16) dans le dispositif de transport (18).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une pièce de guidage (26) disposée du côté dispositif et pourvue de trous de passage (28) est positionnée du côté avant de la pièce de base (12) avant l'enfoncement des touffes de poils (16), les touffes de poils (16) étant enfichées dans les trous de passage (28) via les ouvertures (14) de préférence aussi loin qu'elles dépassent du côté avant hors de la pièce de guidage (26).
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que pour la fixation des touffes de poils (16), celles-ci sont fondues par voie thermique et/ou collées du côté arrière et/ou les extrémités sont noyées dans une masse de matière plastique surmoulée.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que les touffes de poils (16) sont fixées du côté arrière sans ancrage, en particulier par fusion et/ou collage, en ce que la pièce de base (12) équipée provenant d'un poste d'empoilage est insérée dans une cavité d'un demi-moule d'un outil de moulage par injection et repose alors avec son bord sur le bord (150) d'une ouverture (148) partant de la cavité associée (146) et les touffes de poils (16) font saillie dans l'ouverture (148), et en ce que du côté arrière, un tronçon de brosse recouvrant les touffes de poils (16) est surmoulé sur la pièce de base (12) par injection.
  7. Procédé selon la revendication 6, caractérisé en ce que dans la zone de l'ouverture (148), la pièce de base (12) reste sans support lors du moulage par injection ou en ce que des saillies de support (170) ponctuelles ou linéaires dans l'ouverture (148) appuient entre des poils contre la pièce de base (12) pour la soutenir lors du moulage par injection.
  8. Procédé selon la revendication 6 ou 7, caractérisé en ce que lors de l'injection, la pièce de base (12) repose sur le moule de moulage par injection uniquement avec son bord et/ou les extrémités côté avant des touffes de poils (16) sont axialement sans support dans le moule de moulage par injection.
  9. Procédé selon l'une des revendications 6 à 8, caractérisé en ce que la pièce de base (12) est transportée sans plaque de support du poste d'empoilage vers l'outil de moulage par injection.
  10. Dispositif pour la fabrication de brosses par un procédé selon l'une des revendications précédentes, comprenant :
    un magasin (42) présentant une réserve de poils (44) dans laquelle des poils sont logés en paquets parallèles,
    caractérisé par
    un dispositif de prélèvement (48) pour touffes de poils (16), qui prélève des touffes de poils (16) séquentiellement dans la réserve de poils (44), latéralement à leur extension longitudinale,
    un dispositif de transport (18) pour transporter les touffes de poils (16) individuelles vers un poste de bourrage, et
    des moyens par lesquels les touffes de poils (16) sont enfoncées séquentiellement dans les ouvertures (14) de la pièce de base (12) en les traversant depuis le côté arrière, en comblant un intervalle (60) dépourvu de guidage qui est adjacent au côté arrière de la pièce de base (12).
  11. Dispositif selon la revendication 10, caractérisé par un dispositif de coupe par lequel les poils dépassant du côté arrière hors de la pièce de base (12) sont coupés, le dispositif de coupe se déplaçant transversalement aux poils en particulier sans corps de support, en les coupant.
  12. Dispositif selon l'une des revendications 10 et 11, caractérisé en ce qu'il est prévu un poste de fixation pour les touffes de poils (16), dans lequel les poils sont soudés et/ou collés et/ou moulés entre eux par touffes ou intégralement.
  13. Dispositif selon l'une des revendications 10 à 12, caractérisé en ce qu'il est prévu une pièce de guidage (26) du côté dispositif, qui peut être amenée vers le côté avant de la pièce de base (12) et qui parcourt des postes conjointement avec la pièce de base (12).
  14. Dispositif selon l'une des revendications 10 à 13, caractérisé par une pièce de compression (32) profilée qui peut être avancée vers la pièce de base (12) et vers les touffes de poils (16), qui vient en contact avec les touffes de poils (16), en vue de profiler la surface de brosse du côté avant, en prévoyant de préférence une pièce de contre-pression (36) du côté arrière, de telle sorte que les touffes de poils (16) sont positionnées axialement entre la pièce de compression (32) et la pièce de contre-pression (36).
  15. Dispositif selon l'une des revendications 10 à 14, caractérisé en ce que le demi-moule (140) présentant ladite au moins une cavité (156) est réalisé en plusieurs pièces et comprend une première et une deuxième pièce de moule (144, 146) qui comprennent toute les deux des tronçons de ladite au moins une cavité qui se confondent, et la première pièce de moule (144) étant apte à être séparée de la deuxième et étant réalisée sous forme de pièce de transport pour ladite au moins une pièce de base (12).
EP10787032.1A 2010-04-13 2010-12-03 Dispositif et procédé de fabrication de brosses Active EP2557960B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10787032.1A EP2557960B1 (fr) 2010-04-13 2010-12-03 Dispositif et procédé de fabrication de brosses

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10003937.9A EP2377424B1 (fr) 2010-04-13 2010-04-13 Dispositif et procédé de fabrication de brosses
PCT/EP2010/007359 WO2011127951A1 (fr) 2010-04-13 2010-12-03 Procédé et dispositif de fabrication de brosses
EP10787032.1A EP2557960B1 (fr) 2010-04-13 2010-12-03 Dispositif et procédé de fabrication de brosses

Publications (2)

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EP2557960A1 EP2557960A1 (fr) 2013-02-20
EP2557960B1 true EP2557960B1 (fr) 2017-10-25

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EP10003937.9A Active EP2377424B1 (fr) 2010-04-13 2010-04-13 Dispositif et procédé de fabrication de brosses
EP10787032.1A Active EP2557960B1 (fr) 2010-04-13 2010-12-03 Dispositif et procédé de fabrication de brosses

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CN (1) CN102834032B (fr)
ES (2) ES2443141T3 (fr)
WO (1) WO2011127951A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP2763567B1 (fr) * 2011-10-06 2020-04-01 GB Boucherie NV Procédé et dispositif pour la fabrication de brosses et brosse
CN105007776B (zh) 2012-12-10 2017-05-31 高露洁-棕榄公司 口腔护理器具
CN104223758B (zh) * 2013-06-14 2016-06-15 龙昌兄弟股份有限公司 牙刷的制造方法
CA2909171A1 (fr) * 2014-11-11 2016-05-11 L G Harris & Co Limited Ameliorations portant sur des pinceaux
DE102016011337A1 (de) 2016-09-21 2018-03-22 Zahoransky Ag Bündelabnahmevorrichtung, Bürstenherstellungsmaschine, Verfahren zur Herstellung eines Bündelabnehmers sowie Verfahren zur Herstellung eines Gegenstücks einer Bündelabnahmevorrichtung
JP7315552B2 (ja) 2017-12-12 2023-07-26 コーニンクレッカ フィリップス エヌ ヴェ ブラシヘッド・アセンブリ及びこの製造方法

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Publication number Priority date Publication date Assignee Title
FR2663825A1 (fr) * 1990-06-29 1992-01-03 Tonelli Jean Brosse a dent du type pliable a usage unique avec les poils obtenus dans une meme phase d'injection, son procede de fabrication et son moule d'injection.
DE4027288C2 (de) * 1990-08-29 2001-08-09 Coronet Werke Gmbh Vorrichtung zur Erzeugung von Borstenbündeln und Verfahren zur Herstellung von Borstenwaren mittels der Vorrichtung
DE4029610C2 (de) * 1990-09-19 2002-06-13 Zahoransky Anton Gmbh & Co Verfahren zum Verbinden von Borstenbündeln mit einem Bürstenkörper oder dergleichen sowie Bürstenherstellungsmaschine
ES2217733T3 (es) * 1998-07-14 2004-11-01 Firma G.B. Boucherie, Naamloze Vennootschap Metodo para fabricar cepillos y maquina para fabricar cepillos que aplica este metodo.
JP4004305B2 (ja) * 2002-02-13 2007-11-07 花王株式会社 ブラシの製造方法

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Also Published As

Publication number Publication date
EP2377424A1 (fr) 2011-10-19
EP2557960A1 (fr) 2013-02-20
EP2377424B1 (fr) 2013-10-23
WO2011127951A1 (fr) 2011-10-20
CN102834032B (zh) 2014-12-03
CN102834032A (zh) 2012-12-19
ES2443141T3 (es) 2014-02-18
ES2657241T3 (es) 2018-03-02

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