Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D3/00—Preparing, i.e. Manufacturing brush bodies
  • A46D3/06—Machines for both drilling bodies and inserting bristles
  • A46D3/062—Machines for both drilling bodies and inserting bristles of the carousel or drum type
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D3/00—Preparing, i.e. Manufacturing brush bodies
  • A46D3/06—Machines for both drilling bodies and inserting bristles
  • A46D3/067—Machines for both drilling bodies and inserting bristles featuring simultaneous pivoting of bodies for drilling and filling
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D3/00—Preparing, i.e. Manufacturing brush bodies
  • A46D3/08—Parts of brush-making machines
  • A46D3/087—Holders or supports for brush bodies

Definitions

• the invention relates to a method for manufacturing elongated brushes, which have an elongated brush body, and to a brush boring and tufting machine for carrying out the method.
• the invention relates to a method and machine in which elongate brush bodies are attached to holders which in turn are attached to a carousel rotating about a central axis.
• Such carousel drilling and tufting machines for brushes have been known in principle for a long time.
• the advantage is that there are several holders on the carousel that receive brush bodies and are rotated around the central axis, with various stations being provided on the circumference, namely a supply and/or removal station for brush bodies and finished brushes, a drilling station in which Holes are drilled in the brush body, followed by a stuffing station where tufts of bristles are inserted and secured in the previously drilled holes by an anchor (ie, by a bent loop of wire or a sliver of flat wire).
• an anchor ie, by a bent loop of wire or a sliver of flat wire.
• the tufts of bristles are not all parallel, but rather that it is possible to have tufts of bristles that are inclined at the edge of the brush body. For this reason, the holes are drilled separately for such brushes, ie in particular brushes that are not toothbrushes and not nail brushes and are usually referred to as household brushes and brooms. Since the so-called hole field has numerous holes arranged side by side, the brush body is moved step by step relative to the drill or to the tamping tool in the drilling station and then in the tamping station in order to drill or stuff one hole after the other.
• the alignment of the brush body relative to the drilling tool and the tamping tool is sometimes very different from other holes in order to be able to realize the hole alignments.
• the holders can thus be moved precisely in at least two spatial directions at high speed between the individual drilling and tamping cycles. In order to be able to offer a very powerful machine overall, the moving masses should be as small as possible.
• the carousel also referred to as a drum, rotates about its central axis, and the brush bodies are in the prior art with their longitudinal axis in the circumferential direction, i. H. aligned in the direction of rotation of the carousel.
• This type of machine with such an orientation of the brush bodies has established itself on the market.
• the object of the invention is to create a method for producing elongated brushes, by means of which brush drilling and tufting machines can operate at higher cycle rates and are of compact design.
• a brush drilling and tamping machine according to the invention should realize the same advantages.
• the method according to the invention ensures an extremely compact carousel, in which the holders can have a very small distance from the central axis of the carousel, so that the moving masses are small.
• This will e.g. achieved in that the elongated brush bodies are essentially parallel (depending on the orientation of the brush body to the so-called perforated field), so to speak.
• the width of the brush body and its perforated field which is smaller in relation to the length, means that brush bodies can be arranged close to the central axis, especially in the case of brooms, despite their enormous length.
• the individual holders are not driven by at least one linear movement and one linear drive, but exclusively by two separate pivoting movements made possible by their own drives about two parallel, separate rotary axes that are spaced apart from one another.
• the rotary axes themselves hardly take up any space in the width direction, and their drives can be positioned remotely from the holders.
• the alignment of the brush bodies and the drive in the width direction via the two rotary axes complement each other perfectly in a synergetic manner.
• the width direction is the circumferential direction, i.e. the direction of rotation and the direction of counter-rotation of the carousel.
• a drilling process and a stuffing process are each a singular stroke of the respective tool with which a hole is drilled or a hole is stuffed.
• several drilling and tufting tools can be provided next to one another in the drilling or tufting station, in order to work simultaneously on the same brush body or on different ones.
• the holder when drilling and plugging, the holder is moved in the longitudinal direction by linear displacement of the holder in the longitudinal direction and when the holder is inclined in the longitudinal direction about a further axis of rotation. With this movement along a straight line, the large perforated fields can be realized in the longitudinal direction.
• the brush body By swiveling the holder, the brush body is tilted in the longitudinal direction in order to also tilt the boreholes in this axis.
• the axis for pivoting the holder for the movement is in particular tangential to the circumferential direction or in a radial plane (plane perpendicular to the central axis of the carousel).
• the compactness of the machine can be increased if the longitudinal swinging movement is performed by moving a rod extending in a rotary shaft for widthwise swinging.
• the movement of an electric drive is transmitted via the rod in the direction directly to the holder or via a corresponding linkage to the holder, so that the corresponding drive can be positioned away from the holder and thus away from the brush bodies.
• the arrangement or extension of the rod in or through the rotary shaft ensures, on the one hand, high compactness and, on the other hand, the moving masses are very small and, moreover, close to the central axis.
• a threaded rod (which also includes a ball screw) or a toothed rack can be used as the rod.
• the first axis of rotation is z. B. the central axis of the carousel, so that the corresponding drive of the carousel has a dual function.
• the advantage of this embodiment can be seen in the fact that the second axis of rotation and the first axis of rotation can have a relatively large distance from each other, what the Accommodating the motor for the second axis of rotation is facilitated, so that the second axis of rotation can be positioned close to the central axis as a whole compared to the prior art.
• a further increase in compactness is achieved when the second axis of rotation for widthwise movement and the axis of rotation for longitudinal movement/pivoting do not intersect with each other even when the aforesaid rod extends through the rotary shaft.
• the tilting movements about the two axes of rotation namely the second axis of rotation and the axis of rotation for the longitudinal direction, it would be advantageous if these would intersect.
• the axis of rotation for the movement/pivoting in the longitudinal direction is radially further away from the center axis than the second axis of rotation, the smallest distance between this axis of rotation and the center line being defined as the distance between the axis of rotation for the movement/pivoting in the longitudinal direction is.
• the longitudinal movement of the holder can be effected by movement of the carousel, e.g. H. not by providing a linear guide on the carousel, which in turn would increase the construction space of the carousel and its mass.
• the merry-go-round is not moved alone, but the base to which the merry-go-round is attached.
• the method according to the invention is intended in particular for the production of brooms with a perforated field which has a length of at least 100 mm.
• the invention also provides a brush drilling and tamping machine for carrying out the method according to the invention, with a carousel rotating about a central axis, on the outside of which several holders arranged one behind the other in the direction of rotation are provided, a drilling station and a tamping station following in the direction of rotation, fastened in the holders , Elongated brush bodies, the brush bodies having a longitudinal direction and a width direction and the Brush bodies sit in the holders in such a way that the width direction is aligned in the direction of rotation, the holders each being mounted for movement in the width direction when drilling and tufting about two parallel axes of rotation, which are assigned separate rotary drives.
• the holders for the movement/pivoting in the longitudinal direction when drilling and plugging are mounted on a rotary axis and can be moved linearly. By pivoting in the longitudinal direction, the longitudinal ends of the brush bodies are moved axially forwards and backwards on a circular path in the longitudinal direction with a movement component.
• This linear movability can be implemented in such a way that all holders are moved together by a common drive.
• a variant of this is that the carousel can be moved linearly, in particular by moving its base for the linear movement of all the holders in the longitudinal direction. This reduces the effort involved in mounting the carousel relative to the base, because this mounting does not also have to have a linear bearing.
• an axis of rotation for latitudinal movement comprises a mechanical rotary shaft through which extends a driven rod which generates the pivoting movement of the holder about an axis of rotation for longitudinal movement/pivoting.
• this rod can be a threaded rod or a toothed rod.
• a rotary axis for the movement in the width direction comprises a rotary shaft, which has already been briefly mentioned, through which the driven rod extends or in which it is mounted, with on or in the rotating shaft the axis of rotation for the movement/pivoting in is stored longitudinally.
• no separate base has to be provided for this axis of rotation.
• the bearing builds very small in the width direction
• a variant of the invention provides that the rotary shaft has a recess in which a pivotable arm is mounted, which is directly connected to the holder. This pivoting arm is supported on the pivot axis for longitudinal movement/pivoting. As previously discussed, the axis of rotation for longitudinal movement/tilt and the axis of rotation of the rotary shaft should not intersect.
• the brush bodies are preferably those of a broom with a length of the hole field of at least 100 mm.
• the width of the perforated field is at least 10 mm.
• the central axis of the carousel may be a first axis of rotation for latitudinal movement.
• a variant of the invention provides that the second axis of rotation for the movement in the width direction is in a range of 125 to 175 mm away from the first axis of rotation, i. H. is moved around the axis of rotation over a diameter of 250 to 350 mm.
• the brush bodies have an outward, i. H. Perforated array pointing radially outwards, having an outer side whose smallest distance from the central axis is in the range of 250 to 275 mm, so that the outer side is moved in a circle with a diameter of 500 to 550 mm around the central axis.
• FIG. 1 shows a perspective view of a variant of the brush drilling and tamping machine according to the invention for carrying out the method according to the invention
• FIG. 2 shows the brush drilling and tamping machine according to FIG. 1, in which some dimensions are shown
• FIG. 3 shows an enlarged sectional view in the area of the holder for a brush body of the brush drilling and tamping machine according to the invention
• FIG. 4 shows a schematic view of a drive unit for the holder of the brush drilling and tamping machine according to the invention.
• FIG. 1 shows a brush drilling and tamping machine 10 which is designed as a carousel machine.
• a carousel 12 shown schematically and in simplified form, can be rotated about a central axis (also referred to below as the axis of rotation 14), to be precise to an unlimited extent.
• Schematically illustrated holders 16 are arranged on the outside of the carousel 12 , here three holders 16 which hold an elongated brush body 18 in place.
• the brush body 18 is here a brush body for a broom, which has a radially outwardly directed hole array 20 in which holes are first drilled and then tufts of bristles 21 are stuffed into these holes using an anchor 23 (see Figure 3).
• the brush drilling and tufting machine has three stations distributed around the circumference of the carousel 12, which are preferably spaced apart from one another by 120° in the circumferential direction, without this being to be understood as limiting.
• the number of stations is also not limiting, but in the variant shown it is designed to make the carousel 12 as compact as possible.
• a stuffing station In the transport direction of the carousel 12 after the drilling station, a stuffing station is provided with a magazine 24 for fibers, a separating device 26 for bristle tufts 21 and a linear or on head 28 which can be moved along a curved path and in which a stuffing tongue can be moved, with which an anchor 23 together with a tuft of bristles 21 folded around the anchor 23 is driven into a hole in the brush body 18 in a known manner.
• the brush bodies 18 that are processed on the machine 10 are all elongated and preferably also have an elongated perforated array 20.
• the perforated arrays preferably have a length (here in the direction of arrow A) of at least 100 mm.
• the machine 10 is characterized by a high degree of compactness, which is made possible by a synergetic effect with regard to the arrangement of the brush bodies 18 and the movement kinematics of the holders 16.
• the carousel 12 is rotatably mounted on a base 30 in which, for example, the rotary drive for the carousel 12 is housed.
• the base 30 can be moved in a direction Yi by a linear drive. This movement of the base 30 also moves the carousel 12 in that direction. That is, in the embodiment shown, which is not to be understood as limiting, the carousel 12 is not moved relative to the base in direction Yi, but both together.
• the tamping station is either moved as a whole in the Z F direction and/or only the head 28. It is important here that the infeed movement, ie the extent of the movement in the Z F direction (depth compensation) must be adjustable because the holder 16 depending on the position are at different distances from the central axis.
• the drill 22 can be linearly adjusted in the direction Zo by its own drive, which can be attached to the base 30, and a corresponding linear guide, with the adjustment stroke also being variable here, also from borehole to borehole, in order to accommodate the different position of the holder 16 depending on the orientation of the holder 16 and its different distance to the central axis to compensate.
• the movement of the carousel 12 about the central axis generates a movement component Xi.
• this movement component not only are the holders 16 moved from station to station, but in the drilling and in the tamping station, this movement component Xi is also used to align the Brush body 18 to the respective machining tool, so the drill 22 and the head 28 in a so-called width direction B with determined and generated.
• the width direction B runs in the circumferential direction, i.e. in the direction Xi, of the carousel 12 (direction of rotation and opposite direction of rotation of the carousel 12) and perpendicular to the so-called longitudinal direction L of the brush body 18.
• the longitudinal directions L run parallel to the central axis in the state when this Brush body 18 are accommodated in the associated holders 16.
• the holder 16 In order to drill the individual holes in the perforated array 20, the holder 16 must be adjusted in the longitudinal direction L and in the width direction B, from stroke to stroke. In addition, it must be possible to pivot as desired so that the perforated field 20 can be tilted at different angles to the drill 22 and also to the head 28. This means that the individual boreholes are not only all parallel to one another, but the boreholes can also run at a sharp angle to one another.
• the movement in the width direction B is achieved not only by rotating about the central axis (also called axis of rotation 14 below), but also by pivoting about a second axis of rotation 34, about which the holders 16 can be rotated relative to the carousel 12 in direction X 2 .
• the corresponding second axis of rotation 34 is implemented, so to speak, by mounting the holder 16 on or in the carousel 12 and has its own drives.
• the holder 16 becomes loose after turning of the carousel 12 is pivoted counterclockwise about the second axis of rotation 34 to a lesser extent, so that the perforated array 20 is no longer at right angles to the movement of the head 28, but at an angle. The same also applies to the movement in the drilling station.
• Each holder thus has its own drive around the second axis of rotation 34.
• the movement in the width direction B occurs only through the movement around the two axes of rotation, namely around the first axis of rotation 14, which is the central axis here, and around the second axis of rotation 34.
• the alignment and movement/pivoting in the longitudinal direction L during drilling and tamping is also effected by two separate drives for each holder 16, with the purely longitudinal movement being effected by a linear drive, which enables the holders 16 to be supported in a linear manner and to be moved in the direction of the axes of rotation 14, 34 .
• the so-called rotary shaft 36 of each holder 16, which is responsible for the rotation about the axis of rotation 34, can be adjusted more or less far from the carousel 12 in the direction of the axis of rotation 34.
• a movement must also be realized with which the brush bodies 18 can be pivoted or tilted in a second direction, namely in the longitudinal direction L, which runs perpendicular to the direction about the axis of rotation 34 .
• pivot bearings 38 are provided on the rotary shaft 36, which define an axis of rotation 40 for the adjustment in the longitudinal direction L and the tilting of the brush bodies 18 in this direction. This direction is denoted by the arrow Y2 in FIG.
• the structure of the rotary shaft 36 is shown in FIG. As can already be seen in FIG. 1, the rotary shaft 36 has a type of recess or slot 44 in which the pivotable holder 16 is partially accommodated.
• the holder 16 is mounted in the pivot bearing 38 with its axis of rotation, more precisely here with a pivot pin 46 .
• the recess or slot 44 thus results in two opposite walls of the rotary shaft 36, in which the pivot bearings 38 are provided in each case.
• a rod 48 extends in the direction of the second axis of rotation 34, this rod 48 being a toothed rack in the illustrated embodiment, which meshes with a toothed portion (arm) of the holder 16.
• the rod 48 extends partially through the rotary shaft 36 and is adjustable relative to the rotary shaft 36 in the direction of arrow B. However, the rod 48 is pivoted together with the rotary shaft 36 about the second axis of rotation 34 in direction X2 in order to adjust the holder and thus the brush body 18 in this direction.
• Figure 4 shows optional drives.
• the rotary shaft 36 shown only very symbolically in the present case, can be set in rotation, for example, via a belt drive 50, a chain drive or some other gear. 52 designates a corresponding servo drive for this.
• Another servo drive 54 is responsible for the linear adjustment of the rod 48 by adjusting a spindle 56 with its drive shaft, which is mounted in the rotary shaft 36 in a rotationally fixed but axially displaceable manner.
• FIG. 34 Another special feature can be seen in FIG.
• the axis of rotation 34 runs offset to the axis of rotation 40, so that these two axes of rotation 34, 40 do not intersect.
• the axis of rotation 40 lies in a radial plane to the axis of rotation 34, which is not to be understood as limiting.
• the compactness of the machine 10 in FIG. 2 can also be defined using numerical values.
• the diameter Di, on which the axis of rotation 34 migrates around the central axis, is 250 to 350 mm.
• the holders 16 are also arranged very close to the central axis.
• the corresponding method for producing elongate brushes with an elongate brush body consequently comprises the steps:
• the holder 16 is moved in the longitudinal direction at least by moving the holder 16 in the linear direction L and, in the case of a desired inclined position, also by pivoting the holder 16 about the axis of rotation 40 .
• the corresponding axis of rotation 40 can be tangential to the circumferential direction based on the central axis.
• the spindle 56 can also be used instead of a toothed rack, as shown in FIG. It should be emphasized that the aforementioned features are not necessarily functionally linked to one another, but can also be advantageously used individually in differently designed drilling and tamping machines.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Soil Working Implements (AREA)
• Earth Drilling (AREA)
• Polishing Bodies And Polishing Tools (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=80937225

Family Applications (1)

Country Status (5)

Family Cites Families (3)

• 2021
  • 2021-03-04 DE DE102021105280.7A patent/DE102021105280A1/de active Pending
• 2022
  • 2022-02-16 TW TW111105698A patent/TW202237002A/zh unknown
  • 2022-02-18 WO PCT/EP2022/054119 patent/WO2022184474A1/de active Application Filing
  • 2022-02-18 CN CN202280018391.2A patent/CN116916787A/zh active Pending
  • 2022-02-18 EP EP22712509.3A patent/EP4301180A1/de active Pending

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