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
  • A46D3/042—Machines for inserting or fixing bristles in bodies for fixing bristles using an anchor or staple
• • 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

Definitions

• the invention relates to a brush tamping machine with a stuffing tool having a tip which is pivotable about a first axis with its tip between a bundle take-over position and a stuffing position and in the tip of a guide for one, an armature along with bundle along the guide in has a, at least a portion of the finished brush forming bristle carrier stuffing tongue. Furthermore, the invention relates to a stuffing tongue for a brush tamping machine according to the invention.
• Such a brush tamping machine is known from EP 1 803 372 B1.
• a bundle pick-up pivotable about a vertical axis and a stuffing tool likewise pivotable about a vertical axis are provided.
• the bundle picker separates bundles from a bristle magazine and transfers them to the stuffing tool immediately behind a point.
• a guide for a tongue is present, so that the tongue leads a recorded bundle together with anchor along the guide to a, at least a portion of the finished brush forming bristle carrier and pushes into an opening in the bristle carrier.
• An anchor can be a metal plate or a wire loop.
• the stuffing tool is pivoted after receiving a scattered bundle in the direction of the bristle carrier, wherein the tongue participates this pivoting movement and penetrates either deeper during this pivotal movement or after reaching the stuffing position in the top, finally to push the bundle together with anchor in the bristle carrier.
• Both the stuffing tool together with the arcuate guide in the tip and the tongue are moved on a circular arc section.
• the object of the invention is to improve a brush tamping machine of the type mentioned so that they can work with a faster cycle time.
• the brush tamping machine has a tamping tool with a tip which is pivotable about a first axis between a bundle take-over position and a tamping position and which has a tongue stuffing an anchor and bundle along the guide into a bristle carrier in the tip.
• the brush tamping machine according to the invention provides that the guide of the tongue in the tip is linear and that the front end of the tongue relative to the tamping tool in the tamping position performs a linear pushing movement.
• the tongue has a front, guided portion which is close to the bristle carrier and stored in the tip when delivering to the stuffing position in the guide, and a rear, drive-side portion, wherein the cross section of the rear portion is larger than that of the front portion, preferably by at least a factor of 2, in particular by at least the factor 3.
• the rear portion protrudes in each position of the tongue and the tip in sections in a linear guide.
• the tongue was formed Vietnamesebogensegmentformig during a pivoting movement of the tip and the guide in the tip also represented a circular arc section
• linear linear motion is realized by a linear guide.
• the pivoting movement of the stuffing tool is advantageous over a linear movement, because reversible pivoting movements can be realized with less effort, high precision and above all, high speed.
• the fact that, however, a linear movement is performed by the tongue at its front end, the movement is even faster.
• the linear thrust movement reduces the friction against the guide.
• the movement of the bundle and anchor in the last part of the overall movement is linear, which leads to a smaller space requirement of the front end of the tip and the tongue.
• the bristle carrier may be an apertured plate which is later joined to the remainder of the brush body to form a common brush body, or the bristle carrier may also be the brush body itself.
• the cross-section of the front portion of the tongue is equal in particular over its longitudinal extent and / or the cross-section of the rear portion of the tongue is the same over its longitudinal extent, allowing for easier manufacture.
• a transition section may be present, in which a certain continuous transition of the cross sections takes place, in particular in which the cross sections in a radius merge into one another. This is to avoid notch stresses be present in an otherwise formed paragraph between the front and rear section.
• a fastening section adjoin the rear section and form the drive-side end.
• a recess and / or a projection may be present in the width in order to facilitate the drive-side attachment.
• the rear portion protrudes in any position of the tongue and in each position of the tip in sections in a spaced-apart from the second guide.
• This second guide can extend in a linear or circular arc around the pivot axis of the pivot drive.
• One possibility is to guide the tongue on both sides as well as up and down, similar to the guide in the tip.
• the tongue could run along rollers on at least one side and be guided therethrough.
• the rear portion projects into a spaced from the top and thus of the guide in the tip second guide, in which, however, also protrudes the front portion.
• a variant of the invention provides that although the rear portion projects in each position of the tongue and the tip in sections in the second guide, but then unguided to the drive-side mounting portion to exclusively in this unguided area at a feed and return movement of the tongue to be bent.
• the second guide may be aligned with the guide in the tip linear guide, ie it lies in a plane with this.
• the second guide spaced from the tip may further be formed in a base mechanically rigidly coupled to the tip.
• these two guides go into each other without spacing to a common leadership.
• this second guide is preferably always, that is, regardless of the position of the tip and the position of the tongue, the transition between the front and the rear portion. This is particularly advantageous because this section is necessarily critical in terms of strength and durability.
• the tongue should be a one-piece, uniformly thick spring steel band. A spring steel band makes it possible to drive the tongue without great effort by the rotary actuator.
• the tongue can be driven by a preferably own pivot drive, for example, by a separate pivot arm for driving the tongue is present. This means that the tongue moves on the one hand in the region of its driven end along a circular arc path and on the other hand linearly in the region of the guide in the tip.
• the guide for the tongue can sit on a swivel arm of the stuffing tool.
• the axis of the pivot arm of the tongue is also the first axis.
• the stuffing tool can be driven by at least one cam and / or the pivot drive can be driven by at least one cam.
• a cam drive is characterized by a high mechanical stability.
• a possible variant here provides that the cams for the stuffing tool and for the rotary drive of the tongue are rotated by the same camshaft in rotation. This allows for forced synchronization in a very simple way.
• pivot the pivot arms for the stuffing tool and for the tongue by their own electric servomotors.
• the control of the servomotors ensures a synchronization of the movements of the swivel arms.
• the distance of the front end of the tip from the first axis is at least 200 mm, in particular at least 300 mm, so that the Movement of the guide takes place on an extremely large radius of curvature.
• This relatively large pivot radius also ensures that the pivot angle for the pivot arm between the bundle take-over position and the stuffing position is very low, for example, between 2 and 5 °. However, this small swivel angle is already sufficient to complete the complete stroke of the stuffing tool.
• the feed stroke of the stuffing tool may be, for example, only 15-20 mm measured at the leading end of the tip between the bundle take-up position and the stuffing position. This small stroke also ensures high cycle times. In the prior art, corresponding strokes of 25 mm were normal. The percentage reduction of the stroke is therefore enormous.
• the guide in the tip can be substantially linear, e.g. run horizontally.
• This horizontal course which refers to the stuffing position, simplifies the alignment of the parts to each other and, above all, their production, because a linear guide is much easier to produce than a circular segment-shaped.
• the first axis may be a horizontally oriented axis, whereas in EP 1 803 372 B1 the axis was vertically aligned.
• the longitudinal direction of the bristle carrier is oriented in parallel or slightly (i.e., 15 ° -25 °) to the first axis at an angle.
• the pivoting movement of the stuffing tool is thus in a plane perpendicular to the longitudinal direction of the bristle carrier.
• the bust tamping machine according to the invention can be designed without so-called bundle displacer.
• a bundle displacer in the prior art is a separate part lying in front of the tip, which pushes aside the bundles already anchored in the bristle carrier when the next bristle tuft is stuffed adjacent to them.
• the brush tamping machine according to the invention in which the tip itself makes a diving movement and displaced stuffed bristle tufts, such a separate displacer is unnecessary, so that the brush tufting machine according to the invention is simpler and also less complex, so that higher cycle times can be achieved.
• the brush tamping machine according to the invention optionally comprises a bundle picker which feeds individual bundles to the tamping tool, in particular in a horizontal plane.
• the bundle pickup may be a plate-like circular arc segment or a rotating disc which is pivotable about a vertical axis.
• the stuffing tool may be aligned with the bristle carrier such that the leading end of the tip in the direction of the first axis, as viewed from the bundle transfer position to the stuffing position, has a vertically downwardly directed component. This means that the end of the tip moves downwards from above towards the bristle carrier, so it dives off slightly, pushing away the already stuffed bristles.
• An optionally provided inclined surface at the top namely on its underside in the region of the end is directed towards the end obliquely upwards and forms a Abweiser configuration for the already stuffed bristle tufts.
• the top may be tapered towards the end, so that the tip tapers towards the end.
• the stuffing tool opposite bristle carrier can be padded so directly. It is thus a kind of rotating tool that can take several positions.
• the present invention further relates to a tongue, ie stuffing tongue, for a brush tamping machine according to the invention.
• the tongue is a uniformly thick spring steel band having a front portion close to the bristle carrier to be stored in the guide in the tip, and a rear drive side portion, wherein the cross section of the rear portion is larger than that of the front portion , wherein the tongue has a thickness equal to 0.2 mm.
• the tongue has at the drive end end a mounting portion with a recess and / or a projection in the width, to the drive-side attachment.
• the tongue has two opposite longitudinal edges defining the width of the spring steel strip over its length, with one of the longitudinal edges being completely linear and the other longitudinal edge having a step to form the transition between the front and back sections.
• This variant allows the use of a simple punching tool for the tongue. Furthermore, this is performed on one of the side edges, which is possible by the linear edge course.
• the tongue according to the invention can also have all the features described above in connection with the tamping machine, individually or in combination, and vice versa, the tamping machine can have the properties and features mentioned in connection with the tongue according to the invention.
• FIG. 1 shows a schematic side view of a brush tamping machine according to the invention according to an optional embodiment
• FIG. 2 shows the brush-stuffing device according to FIG. 1 with the bristle magazine omitted, wherein the tongue shown separately here does not belong to the brush-stuffing machine according to the invention
• Figure 3 is a schematic side view of the stuffing tool of Figure 1 with the tongue in the bundle take-over position
• FIG. 4 shows a side view of a variant of the tongue according to the invention used in the brush-stuffing device according to the invention according to FIGS. 1 and 2.
• a brush tamping machine comprising a drum 10 having a plurality of brush holders, a stuffing tool 12, a bristle magazine 14, a bundle picker 16, and a plugging tongue 52. Further is a feeder 18 shown symbolically with an arrow for so-called anchor 20, for example in the form of a wire loop or a metal plate present.
• bristle carrier 22 for example plates with openings, which are later part of the finished brush, or bristle carrier 22 in the form of a complete brush body, as shown in Figure 1, stuffed.
• the drum 10 is designed as a rotating holding tool, in which a plurality of holders for bristle carrier 22 are accommodated on a support 26 rotatable about an axis 24, which are fed and removed at certain positions to the carrier 26 and are stuffed in one position.
• the axis 24 is preferably horizontal or slightly angled (15 ° -25 ° to the horizontal), or the elongated bristle carrier 22 are aligned with its longitudinal direction in the horizontal direction or also slightly angled to the axis 24.
• the bristle carrier 22 to be filled is moved by movement of the carrier 26 in a vertical plane in two axes, so that the opening to be subsequently padded in the bristle carrier is always opposite the approached bristle tuft and aligned with it.
• a bristle magazine 14 comprises a mechanically biased bearing having ordered juxtaposed bristles 28.
• a bundle picker 16 which pivots about a vertical axis 30 and includes a plate-shaped circular arc segment, travels along the magazine with the bristles 28 and removes a bundle by engaging the bundle picker 16 its along-running outer edge has a notch 32 which is filled with the bristle bundle.
• the tamping tool comprises a tip 34 having a front end 36 which is pivoted about a first, preferably horizontal axis 40 between a bundle take-up position and a tamping position shown in FIG.
• the tip 34 is thus moved on a circular path.
• the end 36 may contact the bristle carrier 22 or be very close to its surface.
• the stuffing tool 12 includes a pivot arm 46 that is coupled at one end to a bearing 48.
• This bearing 48 is the bearing corresponding to the axis 40.
• the opposite end of the pivot arm 46 carries a base 50 which merges into the tip 34.
• slotted in cross-section guide 56 is provided in the tip 34 a in Figure 3 schematically recognizable.
• the guide 56 in the tip 34 is linear.
• the base 50 has on its upper side a groove 51, which is designed as a guide groove, for a tongue 52 shown in Figure 2, which is relative to the base 50 according to the double arrow in Figure 2 reciprocated.
• the tongue 52 is guided on the base 50 by placing on the base a lid 57 (see Figure 3) which closes the resulting tip-spaced second guide 58 upwardly which could also be made linear and in the same Level as the lead 56 lies.
• the second guide 58 may also be arcuate.
• the tongue 52 is ribbon-like and elongated and has a uniform thickness.
• the tongue 52 is again shown separately according to two different embodiments.
• the tongue 52 has always a front, guided portion 53 in which it has a relatively narrow cross section and in which they in the region of the tip 34 and the base 50, in the first and the second guide 56 and 58 is guided.
• the tongue 52 adjacent to the front portion has a rear portion 55, which in the embodiment of Figure 2 is relatively short in the longitudinal direction,
• the cross section of the rear gate 55 is generally larger than that of the front section 53, preferably by at least a factor of 2, in particular by at least the factor 3.
• Both embodiments have in common that the cross section the tongue 52 remains constant in the region of the front section 53 over the length of this section and remains constant over the length of the rear section in the region of the rear section 55.
• the one-piece tongue 52 is a spring steel strip, which is uniformly thick, at least 0.2 mm, as measured in the view of FIG. 3. In the drawing plane, however, the tongue 52 is significantly wider, as shown in Figure 2 and in Figure 4 is.
• transition section 90 in which a transition of the cross sections takes place in a continuous manner.
• the front section 53 extends in the longitudinal direction centrally to the rear section 55, so that an axis of symmetry is generated in the longitudinal direction. Via radii, the wider rear section 55 then merges in the area of the transition section 90 into the narrower front section 53.
• the front portion 53 extends in any position of the tongue 52 in the first and second guides 56 and 58, respectively.
• the rear portion 55 does not reach into the second guide 58 in the separately shown above tongue 52, because the rear portion 55 is too short in the longitudinal direction. However, if the section 55 is longer, as indicated by broken lines in FIG. 2, it protrudes in sections, namely with its front end section, at any time in the guide 58 explained below with reference to FIG.
• a rear attachment end 92 of the tongue 52 is moved by a pivot drive 82 along a circular arc path.
• the pivot drive 82 includes a pivot arm 84 whose axis coincides with the first axis 40.
• the tongue 52 according to FIG. 4 is easier to produce than that according to FIG. 2 and also better in its mode of operation.
• the front portion 53 is not located centrally to the rear portion 55, but extends at one of the two longitudinal edges 94, 100 as an extension. That is, the longitudinal edge 94 is designed in the region of the front portion 53, the transition portion 90 and the rear portion 55 as a continuous linear edge. Only in the region of the attachment portion 92 is there a protrusion 96 in width which serves to separate and secure the tongue 52 to the drive. For the same purpose, a recess 98 is provided.
• the wider portion 55 projects into the guide 58 in any position of the tongue 52 and tip 34.
• an insertion opening 60 (see Figure 1) is provided, which is open to the side and in the bundle taker 16 a bristle tufts and from the feeder 18, an armature 20 can be inserted.
• the front end 54 of the tongue 52 can be pushed through the tip 34 and thereby fold individual bristle bundles and together with anchor 20 into the opening in the bristle carrier 22.
• the end 36 of the tip 34 has a distance from the first axis 40, which is at least 200 mm, preferably at least 300 mm.
• the swivel angle between the bundle take-over position and the stuffing position is preferably at most 3 °, so it is very small.
• the pivot arm 46 is pivoted back and forth by the aforementioned 3 ° by means of a servomotor or by means of the mechanism shown below.
• Each pivot arm 46, 84 is driven by cams 68 A, 68 B and 70 A and 70 B. These cams are seated on a common camshaft 71.
• the camshaft 71 is driven by an electric motor. It is shown schematically in FIG.
• the cams 68 A and B and 70 A and B are designed as adjacent pairs of disks whose outer circumference deviates from a circular shape.
• cam 68 A For the cam 68 A, there is a roller 64 on the pivot arm 46, with which the cam 68 A can come into contact. Upon appropriate contact, the cam 68 A presses the pivot arm 46 counterclockwise direction stuffing position.
• the cam 68 B has on a second arm 62 of the stuffing tool a roller 66, with which it can come into contact.
• the cam 68 A is thus for the pivotal movement of the stuffing tool 12 in the counterclockwise direction, i. in the stuffing, responsible, while the cam 68 B is responsible for their associated roller 66 for the pivoting movement of the stuffing tool in a clockwise direction.
• cam 68 A or B it would also be possible to work only with a cam 68 A or B and beyond to press the roller 64 or 66 permanently against this one cam via a spring. At higher clock rates, however, two cams 68 A and B are more advantageous.
• a corresponding embodiment of the cam 70 A and 70 B is also provided for driving the pivot arm 84.
• the cam 70 A for example, contacts a roller 73 on an arm 75 coupled to the pivot arm 84.
• the bundle picker pivots the removed bundle in a horizontal plane into the insertion opening 60.
• the tongue 52 has been moved backwards so far that it exposes the insertion opening 60 for the bundle pickup. That is, the return movement causes the tongue 52 leaves the guide 56 for a short time and is included only in the guide 58.
• the feed device 18 also transports the armature 20 to the insertion opening 60 (see FIG. 2). Subsequently, the stuffing tool 12 is pivoted to the bristle carrier 22.
• an inclined surface 71 is formed, which is directed towards the end 36 and upwards and pushes the already stuffed bristle bundles 72 down, so that there is no danger for the subsequent stuffing process that tongue 52, supplied bristle tufts or anchors come in contact with bristles of the already stuffed bundles 72.
• the tip 34 assumes the functions of the previously provided, separate and separately driven bundle displacer.
• the tongue 52 is moved by the pivot drive relative to the base 50 and thus to the stuffing tool 12 forward towards the end 36 and comes back during this feed movement together with the inserted tuft the leadership 56.
• the movement of the front end 54 of the tongue 52 in the guide 56 is linear, as well as the pushing movement with which the tongue 52 pushes the bristle tufts together with anchor from the tip 34 of the guide 65 out into the bristle carrier 22.
• the tongue 52 folds the bundle and pushes it with the wire loop or the metal plate in the bristle carrier 22, to finally in the final To arrive at stuffing position. This is followed by the return movement of the tongue 52 and the tip 34.

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• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Brushes (AREA)
• Sealing Devices (AREA)
• Turbine Rotor Nozzle Sealing (AREA)
• Pens And Brushes (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Cited By (4)

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Citations (5)

Family Cites Families (7)

• 2016
  • 2016-04-20 DE DE102016107334.2A patent/DE102016107334B4/de active Active
• 2017
  • 2017-04-19 KR KR1020187033430A patent/KR102499016B1/ko active IP Right Grant
  • 2017-04-19 WO PCT/EP2017/059296 patent/WO2017182525A1/de active Application Filing
  • 2017-04-19 EP EP17719830.6A patent/EP3445207B8/de active Active
  • 2017-04-19 ES ES17719830T patent/ES2939858T3/es active Active
  • 2017-04-19 EP EP23157760.2A patent/EP4201257A1/de active Pending
  • 2017-04-19 CN CN201780025071.9A patent/CN109068843B/zh active Active
  • 2017-04-20 TW TW106113238A patent/TWI728097B/zh active

Patent Citations (5)

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