EP3501337A1 - Verfahren und vorrichtung zum herstellen von bürsten - Google Patents

Verfahren und vorrichtung zum herstellen von bürsten Download PDF

Info

Publication number
EP3501337A1
EP3501337A1 EP18209698.2A EP18209698A EP3501337A1 EP 3501337 A1 EP3501337 A1 EP 3501337A1 EP 18209698 A EP18209698 A EP 18209698A EP 3501337 A1 EP3501337 A1 EP 3501337A1
Authority
EP
European Patent Office
Prior art keywords
punch
filament ends
bristle
bristle carrier
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.)
Pending
Application number
EP18209698.2A
Other languages
German (de)
English (en)
French (fr)
Inventor
Felix Maier
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.)
V-Air Machines GmbH
Original Assignee
V-Air Machines GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by V-Air Machines GmbH filed Critical V-Air Machines GmbH
Publication of EP3501337A1 publication Critical patent/EP3501337A1/de
Pending legal-status Critical Current

Links

Images

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
    • A46D3/045—Machines for inserting or fixing bristles in bodies for fixing bristles by fusing or gluing to a body
    • 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

Definitions

  • the invention relates to a method for producing brushes, comprising a brush holder having at least one opening and at least one bristle tuft of thermoplastic filaments seated in the opening. Moreover, the invention relates to a device for carrying out the method.
  • the mass of a tuft of bristles merges with that of the adjacent tufts of bristles, so that the tufts of bristles are also connected to one another, resulting in a plate-like connecting layer from which the filaments of the bristle tufts emerge.
  • This reshaping of the heated mass also ensures that the filament ends are widened overall and are thus secured against being pulled out of the opening.
  • the individual filaments On the front side, the individual filaments should be arranged as compactly as possible side by side, above all, they should run parallel to each other, which is sometimes extremely difficult if the packing density, i. H. the cross-sectional density of the filaments is relatively low.
  • the filaments spread out a great deal after being pulled out of the perforated plate; this is referred to as "rebounding". "Fanning” or "popping" the tuft.
  • the object of the invention is to provide a method for producing brushes and an apparatus for carrying out the method in which this Rebound is reduced and the parallelism of the filaments, just the outer filaments of a tuft of bristles to the rest of the tuft can be met within narrow limits.
  • the stamps were always moved with their contact surface perpendicular to the top of the bristle carrier, whereby the filaments bulge each other and undirected and also pushed softened material between the filaments.
  • the tendency to rebound is significantly lower.
  • the filaments are less biased against each other and axially compressed by oblique method of the punch at the rear end. This oblique component of the punch obviously ensures that the filaments are moved laterally toward one another and are thus layered rather than pushing against each other in an undefined manner.
  • the tests carried out have shown that the significant quality improvement increases with the smaller thickness of the bristles and also with a decreasing density of the tuft.
  • a relative movement between the punch and bristle carrier at an acute angle relative to the perpendicular to the top against the filament ends is brought about when the top is substantially planar, or There is a sideways movement to the top in the area of all bristle tufts when it is arcuate.
  • the movement takes place by an oblique movement of the punch or the bristle carrier.
  • several movements with different directions of movement can be run through successively, for example first a feed movement (relative movement) parallel to the extension of the filaments and then a movement perpendicular thereto.
  • the angle between the direction of movement of the punch from hitting the back, projecting filaments (to the bottom dead center) and the perpendicular to the top of the bristle carrier should be at most 70 °, in particular at most 40 °, in particular at most 30 °, preferably in the range of 10 ° are up to 30 °, as experiments have shown.
  • the heating and fusing can optionally be done, of course, with hot air or otherwise non-contact heat transfer.
  • the stamp only ensures that the liquid or pasty mass of the individual filaments merges into one another and the filaments remain bundled and aligned next to each other.
  • the preferred embodiment provides that also the heating and fusing takes place by the punch, which in this case is heated when it contacts the filament ends.
  • This heating can be done by the stamp has an electric heater.
  • the stamp is cooled rapidly, that is provided with a cooling device.
  • This cooling device is, for example, a cooling water guide through the stamp.
  • the stamper is preferably moved back and forth along a path to and from the backside protruding filament ends.
  • the web is in particular linear, although it may also be provided that the web is an oval or a bow.
  • the punch could first be delivered vertically in the direction of the top of the bristle carrier during the initial movement, but then moved laterally just before, during and / or shortly after the contacting of the not yet melted filament ends.
  • the inventive method is particularly suitable for devices in which the at least one bristle tufts is transported by suction or a stream of compressed air into the opening.
  • a supply of bristle tufts namely the tuft density is low in comparison to the so-called stuffing method in which bristle tufts are driven by a plunger mechanically into the opening.
  • the punch has a substantially flat contact surface, with which it is moved against the rear, projecting filament ends. During contact with the back, projecting filament ends, the contact surface extends substantially more parallel to the top of the bristle carrier, ie, the contact surface is not pivoted.
  • the top of the bristle carrier may at most be slightly curved, but this is negligible, because the difference in height between the side edges and a central region of the top is a maximum of a few tenths of a millimeter.
  • the stamp could be carried out with its contact surface complementary. It is important that the top and the contact surface without inclination to each other, but are fed to each other parallel to each other, namely at the aforementioned acute angle.
  • the punch has a complementary contact surface with which it is moved against the rearwardly projecting filament ends, the contact surface extending substantially parallel to the upper side of the bristle carrier during contact with the rearwardly projecting filament ends.
  • the acute angle is always greater than 0 °, preferably greater than or equal to 10 °.
  • the bristle carrier is usually a part of the finished brush, i. H. It also consists of a thermoplastic material.
  • the teaching of the invention can be carried out in so-called platelets, which then, after loading with bristle tufts z. B. be sprayed.
  • the method according to the invention can only be carried out for a single tuft of tufts, but numerous apertures which are filled with tufts of bristle are usually present in the bristle carrier.
  • the stamp which is moved at an acute angle to the vertical on the top, while welding all the filaments of the numerous bristle tufts together.
  • the invention further relates to a device for carrying out the method according to the invention, with a reciprocable punch, a receptacle for a bristle carrier provided with at least one opening, a transport device for bristle tufts, can be introduced with the bristle tufts in openings of bristle carriers the punch is movable along a guideway which extends at an acute angle relative to the perpendicular to the top of a carrier inserted into the receptacle. Since the top usually lies in the horizontal, the acute angle is also defined with respect to the horizontal.
  • the punch can sit on a linear guide and be moved along it or, as previously stated, along a curved path or a circulating path.
  • the angle is greater than 0 °, preferably greater than 10 °, with which the stamp is moved against the filament ends and this transforms.
  • the punch is optionally moved at an angle of at most 70 °, but preferably at most 40 °, in particular at most 30 ° to the vertical and thus to the top of the bristle carrier. Angles in a range of 10 ° to 30 ° have proven to be optimal at present.
  • the stamp can, as I said, have a heating and / or active cooling.
  • the device may include a working with compressed air and / or vacuum transport device for bristle tufts, with which they are transported into the openings in the bristle carrier.
  • FIG. 1 a device for producing brushes, in particular toothbrushes is shown, which comprises a plurality of stations.
  • the device has, for example, a cyclically rotating turntable 8, on or on which various carriers 10 are mounted, which successively pass through stations in cycles.
  • the carriers 10 have so-called receptacles 12, in particular upwardly open recesses which are complementary to so-called bristle carriers 14.
  • This bristle carrier 14 may be part of a later brush body and z. B. be designed as platelets or may be the entire brush body or run as a tool-side perforated field plates. Perforated field plates are used to first pick up bristle tufts in a particular pattern, the later hole pattern in the brush equivalent. After filling the perforated field plates, the bristle tufts are then transferred into the bristle carrier, which in turn is then part of the finished brush.
  • the receptacle 12 is provided with the bristle carrier 14.
  • a cutting station 20 may be present below, where the bristle ends to be fused are cut to the desired length prior to welding.
  • the filament ends of the tufts are melted so that they are fused with the other filaments of a tuft of bristles or with all the bristle tufts of the brush.
  • a corresponding heating device is provided, which will be explained below.
  • a completion station 24, z. B. in the form of a spray station, may be part of the device, but this is not absolutely necessary.
  • the stuffed bristle carriers are overmolded, for example by injecting a neck and a handle of a toothbrush.
  • the bristle carrier is a tool-side perforated field plate, for example, in the injection station, a part or the entire brush body is molded onto the bristle tufts welded together.
  • a transfer of the bristle tufts from the perforated field plate to a bristle carrier may alternatively be effected beforehand.
  • the finished or at least partially finished brushes 26 are subsequently removed from the device.
  • FIG. 2 the welding station 22 is shown schematically.
  • the bristle carrier 14 is in this case a small plate, which forms part of the finished brush and which is later encapsulated.
  • the bristle carrier has a bottom 40 and an upper side 42, which is formed in sections by a recess 44 which is surrounded by a peripheral edge 46.
  • the top 42 is preferably flat, at most minimally arched.
  • the bristle carrier 14 has a plurality of openings, of which only one opening 48 is shown for the sake of simplicity.
  • this opening 48 is a bristle tufts 50, consisting of numerous filaments inserted, which are made of thermoplastic material. In practice, all openings are usually equipped with bristle tufts 50 before welding.
  • the upper side 42 at the same time forms the rear side of the bristle carrier 14. Opposite the upper side 42, the bristle tufts 50 protrude slightly after insertion into the openings 48.
  • a heated (heated here by an electric heater 52) punch 54 is driven against the rear projecting filament ends 56.
  • the plunger 54 contacts the rear projecting filament ends 56 with its flat contact surface 58, the plunger 54 on the contact surface 58 is already hot so that the filament ends 56 melt and the filaments are bonded together.
  • the punch 54 then moves further towards the top 42 and compresses the liquid material into flat islands or together to form one or more plates, so that filaments of a tuft of bristles and possibly also tufts are connected to each other and materially merge into one another.
  • the movement of the punch 54 to the top 42 takes place at an acute angle ⁇ to a vertical S of the top 42, ie there is a component of movement laterally to the top 42 in the region of the filament ends 56 via which a lateral force is exerted on the filaments. If there are several bristle tufts 50 in a bristle carrier 14, then a Relative movement of punch 54 to the top 42 such that all existing bristle tufts experience a lateral force.
  • the web which is traversed by the punch 54 is a linear path, and thus the punch moves obliquely downwards and back up obliquely upward as it is moved to its working and back to its starting position.
  • the movement of the punch is motorized, z. B. via a servo motor or a pneumatic cylinder.
  • the angle ⁇ is greater than 0 °, preferably greater than or equal to 10 °, a maximum of 40 °, in particular a maximum of 30 °.
  • the angle ⁇ is in the range of 10 ° to 30 °.
  • the contact surface 58 always remains equal to the vertical S aligned during the lifting movement, preferably parallel to the top 42th
  • a curved path or a circumferential path can also be provided. It is important, however, that an oblique movement of the punch down occurs when the punch 54 hits the filament ends 56 and is further moved to bottom dead center in its movement.
  • the punch 54 may also be provided with a cooling device, represented here by cooling channels 60, which are flowed through after melting of the filament ends 56 in order to cool the punch 54 as abruptly as possible in the region of the contact surface 58, whereby then also the just melted plastic material of the filaments solidifies.
  • a cooling device represented here by cooling channels 60, which are flowed through after melting of the filament ends 56 in order to cool the punch 54 as abruptly as possible in the region of the contact surface 58, whereby then also the just melted plastic material of the filaments solidifies.
  • the angle ⁇ is executed in this case also to the vertical.
  • the punch 54 is with respect to its movement in the in FIG. 2 shown embodiment mounted in a linear guide 62 movable.
  • the punch 54 has a complementary contact surface 58, with which it is driven against the rearwardly projecting filament ends 56 of a plurality of bristle tufts 50, wherein the contact surface 58 during contact with the back projecting filament ends 56 of all bristle tufts 50 substantially obliquely to the top 42 of the bristle carrier in the area of all bristle tufts 50, see Arrow A.
  • all Bostenbüscheln 50 thus takes place by the punch and a force on the side, with the filaments are pressed laterally against each other.
  • the relative movement between punch 54 and bristle carrier 14 may also be small individual movements in different directions, such as initial longitudinal movement at the beginning of contact of punch 54 with filament ends 56, and then transverse movement thereto.
  • the aforesaid angle ⁇ is defined in such a stepped stepwise motion by the virtual line of contact of the position of the punch at the beginning of the contact of the filament ends and the position of the punch before returning to the home position, that is, when the molten material of the filament ends has been shifted to the maximum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP18209698.2A 2017-12-19 2018-12-03 Verfahren und vorrichtung zum herstellen von bürsten Pending EP3501337A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017130442.8A DE102017130442A1 (de) 2017-12-19 2017-12-19 Verfahren und Vorrichtung zum Herstellen von Bürsten

Publications (1)

Publication Number Publication Date
EP3501337A1 true EP3501337A1 (de) 2019-06-26

Family

ID=64572137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18209698.2A Pending EP3501337A1 (de) 2017-12-19 2018-12-03 Verfahren und vorrichtung zum herstellen von bürsten

Country Status (4)

Country Link
EP (1) EP3501337A1 (zh)
CN (1) CN110025126A (zh)
DE (1) DE102017130442A1 (zh)
TW (1) TWI796375B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4255259A1 (en) * 2021-01-19 2023-10-11 The Steelstone Group LLC Juicer incorporating removable juicer brush

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136017B1 (de) 2000-03-21 2003-06-25 G.B. Boucherie, N.V. Verfahren und Vorrichtung zum Verschmelzen von Faserenden
DE102013100194A1 (de) * 2012-03-05 2013-09-05 Gb Boucherie Nv Vorrichtung und Verfahren zum Herstellen von Bürsten, insbesondere Zahnbürsten
DE102015109706A1 (de) * 2014-07-15 2016-01-21 Zahoransky Ag Trägerplättchen und Bürste, insbesondere Zahnbürste mit Trägerplättchen
DE202016101195U1 (de) 2016-03-04 2016-05-12 V-Air Machines Gmbh Vorrichtung zum Erzeugen von Borstenfeldern für Bürsten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136017B1 (de) 2000-03-21 2003-06-25 G.B. Boucherie, N.V. Verfahren und Vorrichtung zum Verschmelzen von Faserenden
DE102013100194A1 (de) * 2012-03-05 2013-09-05 Gb Boucherie Nv Vorrichtung und Verfahren zum Herstellen von Bürsten, insbesondere Zahnbürsten
DE102015109706A1 (de) * 2014-07-15 2016-01-21 Zahoransky Ag Trägerplättchen und Bürste, insbesondere Zahnbürste mit Trägerplättchen
DE202016101195U1 (de) 2016-03-04 2016-05-12 V-Air Machines Gmbh Vorrichtung zum Erzeugen von Borstenfeldern für Bürsten

Also Published As

Publication number Publication date
TWI796375B (zh) 2023-03-21
TW201927208A (zh) 2019-07-16
DE102017130442A1 (de) 2019-06-19
CN110025126A (zh) 2019-07-19

Similar Documents

Publication Publication Date Title
EP0405204B1 (de) Verfahren und Vorrichtung zum Herstellen von Borstenfeldern oder Borstenbündeln
DE4027288C2 (de) Vorrichtung zur Erzeugung von Borstenbündeln und Verfahren zur Herstellung von Borstenwaren mittels der Vorrichtung
DE202012002332U1 (de) Vorrichtung zum Herstellen von Bürsten, insbesondere Zahnbürsten
EP2587959B2 (de) Verfahren und vorrichtung zum herstellen von bürsten
EP3552517A1 (de) Verfahren und vorrichtung zum herstellen einer bürste
EP0293665A2 (de) Verfahren und Vorrichtung zur Herstellung von Borstenwaren aus Kunststoff
WO2017186371A1 (de) Verfahren und vorrichtung zum herstellen einer buerste
DE2842515C2 (de) Verfahren zum Herstellen von Kopfstücken mit einer Membrane für Verpackungsbehälter aus Laminat mit einer metallischen Sperrschicht und Vorrichtung zur Durchführung des Verfahrens
DE102015111312B4 (de) Verfahren und Vorrichtung zum Herstellen einer Bürste
WO2017167608A1 (de) Verfahren und vorrichtung zum herstellen einer bürste oder eines pinsels sowie träger für eine bürste oder einen pinsel
EP3501337A1 (de) Verfahren und vorrichtung zum herstellen von bürsten
EP3791751B1 (de) Verfahren zum befestigen einer borste in einem borstenträger sowie vorrichtung hierfür
EP2377424A1 (de) Verfahren und Vorrichtung zum Herstellen von Bürsten
DD298879A5 (de) Verfahren und vorrichtung zum herstellen von borstenfeldern oder borstenbuendeln
EP3599933B1 (de) Verfahren und vorrichtung sowie spritzgussformhälftenteil zum herstellen einer bürste
DE4330171A1 (de) Verfahren zum Herstellen von Bürsten sowie Bürstenherstellungsmaschine zur Durchführung des Verfahrens
DE10108339A1 (de) Verfahren zur Herstellung von Bürsten im Wege des Spritzgießens
DE3512192A1 (de) Verfahren, maschinen und werkzeuge zum herstellen von buersten, besen und dgl.
WO2018177593A1 (de) Verfahren und vorrichtung sowie spritzgussformhälftenteil zum herstellen einer bürste
DE102012021429B4 (de) Vorrichtung und Verfahren zum Herstellen von Bürsten, insbesondere Zahnbürsten
BE1023452B1 (de) Verfahren und Vorrichtung zum Herstellen einer Bürste
DE19748925C2 (de) Verfahren zum Abschneiden von Borstenfeldern bei der Herstellung von Bürstenerzeugnissen aus Kunststoff und Vorrichtung dafür
WO2023285196A1 (de) Verfahren und vorrichtung zum befestigen von borsten in einem borstenträger
BE1023625B1 (de) Verfahren und Vorrichtung zum Herstellen einer Bürste
DE102004026207B4 (de) Formvorrichtung und Verfahren zum Ausformen eines Behältnisses aus einer thermoplastischen Bahn und zur In-Mould-Etikettierung des Behältnisses

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191018

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220113