EP1300097A1 - Method and device for producing brushes, particularly toothbrushes - Google Patents

Abstract

Method involves feeding a bundle of bristles (3) surrounded by a sleeve (2), packaging, etc. to a bristle magazine (4), removing the sleeve, and further processing the bristles, especially transporting the bristles to a bristle compartment (8). The sleeve is cut through at two points a distance apart and the resulting parts (2a, 2b) of this sleeve are removed from both sides of the magazine. <??>An Independent claim is also included for a device for carrying out the above process.

Description

The invention relates to a method for producing Brushes, especially toothbrushes, starting with one Wrapping, packaging, tying or the like enclosed bristle bundles with a bristle magazine Bristle supply supplied, wrapping, packaging, strapping or the like and then the bristles transported in particular to a bristle compartment disc and be taken over by this.

A comparable method is known from DE 26 32 328 C2. There are several ways to separate the casing with the help of a single knife in different places intended. The wrapping cut open on one side is then pull away from the bristle stock without bristles taken away or damaged.

Especially very short bristles of less than 30 millimeters Length, for example in the order of 20 millimeters Length or even 10 millimeters length or less, and one the highest possible working speed allow the application the previously known device and the one to be carried out therewith Procedural not.

There is therefore the task of a procedure of the beginning mentioned type and a device for its implementation create what high working speeds with the Processing short bristles are possible.

The above-mentioned method is used to solve this problem characterized in that the wrapping, packaging, Strapping or the like in the bristle magazine on two spaced through and cut through resulting two parts of this wrapping, packaging, Umschürung or the like on the two sides of the Bristle magazine moved out of this or pulled out become.

The separation of the wrapping, packaging, or stoking the like - hereinafter referred to as "wrapping" - in two separate parts and their removal after two different sides of the bristle magazine allows a high Working speed without damaging bristles or be carried away, even if they are only a short length less than 30 millimeters or even 10 millimeters and have less. Tests have shown that a high Working speed is possible. It is also advantageous that cutting the wrapper inside the Bristle magazine happens so that the bristles are already in the Feed for their further processing and there too remain.

It is particularly expedient if the bristle bundles with their wrapping, packaging, strapping or the like against an approximately midway between the lateral boundaries of the Bristle magazine arranged conveyed and pressed and thereby the wrapping against each other in the conveying direction opposite sides is intersected and if the both parts of the casing or the like in the conveying direction inside the bristle magazine behind the interface can be removed from the magazine or pulled out. So can the transport of the bristle bundles with their wrapping and the "Uncovered" bristles can be used to cover the coating a knife inside the magazine in two parts to separate the two sides of the magazine from this can be removed so that the bristles in the magazine stay behind without being damaged.

A modified procedure can consist in that the Envelope or the like of the respective bristle bundle diagonally from the side with the side boundary their cutting edges to slidable knives or similar cutting devices are cut. Also this enables the wrapping to be cut into two parts, the can be removed from the magazine on both sides, this removal on both sides means that each one of the parts of the casing created by the separation after each opposite side is removed.

It is advantageous if the bristles of the bristle bundle and the surface lines of their wrapping or the like in their Feed in the magazine arranged approximately vertically and across itself in a substantially horizontal direction be advanced. This also allows relatively short bristles inside the magazine with side borders be kept stable and pushed forward and the load at Resist cutting through the casing.

In the procedure described above, it is advantageous that the bundles of bristles due to their wrapping Cross-section are circular structures that are within the elongated magazine each have cavities between them set free. When cutting through the casing, the in the bristle bundle is initially one Experience loosening so that the cut open Wrapping parts can be easily removed before through the progress of the feed the bristles that have now become free within the magazine to their desired tightness be pushed together.

The invention also relates to a solution to the problem Device for manufacturing brushes, in particular Toothbrushes, with a device for feeding initially wrapping, packaging, strapping or the like enclosed bristle bundles to a horizontally arranged Bristle magazine, inside which the bristles in vertical Position across to itself in the feed direction of your Processing can be fed and transported, the Device a cutting device for cutting open the Wrapping, packaging, strapping or the like and one Device for capturing and removing the cut open Wrapping, packaging, strapping or the like.

In this device it is provided according to the invention that the Cutting device inside the bristle magazine in Bristle feed direction at a distance from one Transfer device or bristle compartment disc arranged and for cutting the wrapping, packaging twice, Constriction or the like is formed and that the im Area of this cutting device for Capture and remove the cut in two parts Wrapping on both sides of the two lateral boundaries of the Bristle magazine each have at least one barrel or Gripping instrument has that the lateral limits of the Bristle magazine in the area of the respective barrel or gripping instrument have a breakthrough and that the respective barrel or Gripping instrument through the breakthrough of each Limitation for grasping and pulling out one of the two parts the cut wrap or the like can be pushed through and retracted.

The device according to the invention thus looks within the Bristle magazine a cutting device with which the Wrapping can be cut in two places, so that inside the bristle magazine the cover in two parts is separated by the side by the side Boundaries or boundary walls are removed can. As a result, the bristles themselves remain undamaged and are from the boundaries within the bristle magazine kept so this removal of the wrappings or the like and the feed of the bristles with high Working speed can take place.

The height of the lateral limits of the bristle magazine can substantially equal to the length of those taken up Be bristles and for example 30 millimeters to 10 millimeters or less, depending on the length of the to processing bristles. Advantageously bristles of short length can also be processed with a high working speed.

The in the side boundaries of the bristle magazine for the Barrel and gripping instruments are provided breakthroughs expediently enclosed on all sides, that is, they have the form perforations and their vertical dimension may be less than that Height of the side walls and less than the length of the bristles his. The separated wrapping, packaging, Constriction or the like through such a breakthrough are pulled out laterally without the bristles be taken with you as they move during their advance above and below the breakthrough at the boundary support. Despite the possibility of removal for the severed The wrapping remains the lateral limitation and support of the Bristle magazine received for the bristles themselves.

It is favorable if the breakthroughs in the preferably as Sidewalls formed lateral boundaries of the bristle magazine about halfway up these limits are arranged. Thus the bristles are also in the area these breakthroughs largely evenly and over one sufficiently large part of your length supported and attached to it prevented from evading through such a breakthrough.

The respective drum and gripping instrument can be pneumatic or hydraulically displaceable through the breakthrough and after the Detect the part of the wrapper to be removed or the like can be withdrawn again. A correspondingly high one Working speed of the barrel and gripping instrument is thereby possible.

The barrel or gripping instrument can have a barbed tip and / or a forceps-like gripper and / or one with negative pressure be operated vacuum cleaner. This can in particular depend on the type of Wrapping, packaging, strapping or the like dependent made with this gripping instrument after the To divide into two parts is to be removed.

The bristles can be inside the bristle magazine by means of a in particular pneumatically or hydraulically operated Slider can be moved in the feed direction and the slider can each with wrapping, packaging, strapping or similar bundles acted upon and in the direction move the cutting device. Thus both still wrapped bundles as well as those freed from wrapping Bristles with one and the same slide in the feed direction moves what a simple constructive arrangement and above all a high working speed allowed.

The bristle bundles can be horizontal from the bristle magazine Can be fed side or vertically from above in the area of the slide his. It can be achieved that the slide that follows a certain feed movement back to the starting position withdrawn, one next at a time Retreat position bristle bundle fed to the bristle magazine detected and the feed continues.

It is particularly useful if the width of the Bristle magazine about the diameter of the wrapped or packaged bundle of bristles and before the area of Cutting device between the essentially in cross section circular still wrapped or packaged bundles of bristles and the triangular walls each have triangular cavities remain free. This results in spite of the pressure of the Slide in the feed direction after cutting open one Wrapping or the like initially in the area of this released bristles some relaxation and loosening, which favors the removal of the parts of the casing, because Fassoder At this moment, gripping instruments have enough space to Have access to the bristle magazine without closing the bristles very constraining or possibly damaging.

In addition, this allows the device to be designed in terms of their cutting device in that the Cutting device two diagonally directed and has movable knives on or in the side Limits are arranged and in during the cutting process triangular cavities between the wrapped or packaged Immerse the bundles of bristles. This on the respective Bristle bundles of diagonally effective knives are in Feed direction due to their inclined arrangement and slightly offset movement in the feed direction and cut the respective wrapping on opposite sides through, the closer to the side walls than the Are in the middle of such a bristle bundle. But it will still be achieved that the wrapping or the like in two parts is separated, each laterally by the limits can be removed, which is facilitated by that immediately by opening the casing brief release of pressure between the bristles is achieved while this is the triangular cavities Completion.

A different, structurally simplified solution can be found in it exist that as a cutting device approximately in the middle between the lateral boundaries of the bristle magazine arranged Knife is provided in particular fixed, the cutting edge is directed against the direction of advance of the bristle bundle. These are then wrapped around this cutting edge pressed, which initially moves this to one side of the Bristle bundle and with further feed on the opposite side cut and cut in two is separated.

Especially when combining one or more of the above Features and measures result in a procedure and above all a device for making brushes and especially to remove the wrapping or like the processed bristle bundle, that simple and especially works at high speed and at the same time a structurally simple solution for conveying the Bristles for their processing, especially first to a bristle compartment disc.

Fig. 1

eine Draufsicht einer erfindungsgemäßen Vorrichtung zum Zuführen von Borstenbündeln und zum Durchtrennen von deren Umhüllung oder Verpackung innerhalb des Borstenmagazins, wobei die Borstenbündel in horizontaler Richtung quer zu der Orientierung ihrer Borsten von der Seite her dem Borstenmagazin zuführbar sind und die seitlichen Begrenzungen des Borstenmagazins einen etwa dem Durchmesser der Borstenbündel entsprechenden Abstand und hinter einer Schneidvorrichtung jeweils Durchbrüche zum Entfernen der durchtrennten Umhüllung nach den Seiten hin aufweist sowie

Fig. 2

einen Querschnitt der in horizontaler Richtung verlaufenden seitlichen Begrenzungen oder Seitenwände des Borstenmagazins mit den Durchbrüchen für die Fass- und Greifelemente zum seitlichen Entfernen der aufgetrennten Umhüllungen, wobei angedeutet ist, dass die Borstenbündel dem Borstenmagazin von oben herin Vorschubrichtung vor der Schneidvorrichtungzuführbar sind.

Exemplary embodiments of the invention are described in more detail below with reference to the drawing. It shows in a partially schematic representation:

Fig. 1

a plan view of a device according to the invention for feeding bristle bundles and for severing their wrapping or packaging within the bristle magazine, the bristle bundles in the horizontal direction transverse to the orientation of their bristles can be fed from the side of the bristle magazine and the lateral limits of the bristle magazine approximately one Diameter of the bristle bundle corresponding distance and behind a cutting device has openings for removing the severed sheath to the sides and

Fig. 2

a cross section of the horizontal boundaries or side walls of the bristle magazine with the openings for the barrel and gripping elements for the lateral removal of the separated coverings, which indicates that the bristle bundles of the bristle magazine can be fed from above in the direction of advance in front of the cutting device.

The two embodiments of the described below differentiate in each case overall with the device designated 1 only in terms of feeding the first of a Wrapping, packaging, strapping or the like, in the following briefly called sheathing 2, enclosed bristle bundle 3 to a bristle magazine 4, which has a bristle supply contains. In the embodiment of Figure 1, the Bristle bundle 3 to the bristle magazine 4 at an interruption 5 fed from the side while in the embodiment 2 with the help of an approximately vertical guide tube 6 Magazine in the same place from above can.

Otherwise, the devices 1 match, in particular as far as the design for removing the wrappers 3 is concerned. The device 1 described below therefore relates to both Embodiments.

The device 1 is used to manufacture brushes, especially of toothbrushes and has the already mentioned somewhat differently designed feeding devices first of all of an envelope 2 or the like enclosed bristle bundles 3 to the horizontally arranged Bristle magazine 4, within which the bristles 7 in vertical position transverse to itself in the feed direction transportable and in the exemplary embodiments Bristle compartment disc 8 can be fed, making them the other Processing are fed. The device 1 also a cutting device to be described in more detail below for cutting open the casing 2 and one as well device to be explained for detecting and removing the cut on sheathing 2, so that the bristle compartment disc 8 close areas of the bristle magazine 4 only Bristles and no more coating 2 contains.

The cutting device already mentioned is within the Bristle magazine 4 in the feed direction of the bristles 7 at a distance in front of a takeover device, in the embodiment before Bristle compartment disc 8 arranged and according to Fig.1 for cut the casing 2 twice. The in Area of this cutting device for Detection and removal of the two parts 2a and 2b cut-open sheathing 2 points according to FIGS. 1 and 2 on both sides of the two lateral boundaries 9 of the Bristle magazine 4, which is designed according to Figure 2 as side walls are, each a barrel or gripping instrument 10. there have these lateral boundaries 9 of the bristle magazine 4 in Area of the respective barrel or gripping instrument 10 a Have breakthrough 11 through which the respective barrel or Gripping instrument 10 for grasping and pulling out one of the both parts 2a or 2b of the cut envelope 2 or the like can be pushed through and retracted. In Fig. 1 is the process of pulling out the two parts 2a and 2b the twice-cut envelope 2 one in the feed direction front bristle bundle 3 through on both sides the limits 9 shown through.

According to Figure 2, the height of the lateral boundaries 9 of the Bristle magazine 4 substantially equal to the length of it bristles 7 and is, for example, 30 Millimeters or less, also significantly less, for example only 10 millimeters or even less. So it can too very short bristles, such as those used for toothbrushes be magazineed and released from their wrapping 2 and this because of the simplicity of the arrangement with high Working speed.

From Figure 2 it follows that the in the lateral boundaries 9 of the bristle magazine for the barrel and gripping elements 10 provided openings 11 are enclosed on all sides, that is Represent perforations with a peripheral edge, and their vertical dimension less than the height of the limits 9 and is less than the length of the bristles 7. Thus the Bristles 7 also laterally in the area of these openings 11 supported and guided in the feed direction, that is The bristles 7 emerge from the magazine 4 through them Breakthroughs 11 through as well as damage to the Bristles 7 avoided.

The openings 11 are about halfway up the Limits 9 arranged so that the bristles 7 on both sides of these breakthroughs 9 each about an equal part their length is supported and guided.

The respective drum or gripping instrument 10 is pneumatic or hydraulically by means of an appropriate working cylinder 12 can be advanced and after detecting the part to be removed 2a or 2b of the casing can be withdrawn again.

It is indicated in the exemplary embodiment that the barrel or Gripping instrument 10 may be a barbed tip 13 or can have, with which the covering parts 2a and 2b according to FIG. 1 can be detected. But it is also a pair of pliers Gripper or a vacuum operated vacuum or the Use of several barbed tips possible.

From Fig.1 it follows that the bristles 7 within the Bristle magazine 4 by means of a pneumatic or hydraulic with a further working cylinder 14 actuable slide 15 are movable in the feed direction and that the slide 15th each with wrapping 2, packaging, strapping or similar bundles 3 acted upon and in the direction the cutter moves. It is indicated that the slider 15 reciprocates, that is if the bristle supply is about the diameter dimension of one Bristle bundle 3 is shifted, the slide 15th be withdrawn so that a laterally arranged Device and the interruption 5 according to FIG. 1 or one of another downward-directed guide tube 6 Bristle bundle 3 is conveyed into the area of this slide 15 can be.

The bristle bundles 3 are thus arranged horizontally Bristle magazine 4 horizontally from the side (Fig.1) or vertically can be fed from above in the area of this slide 15, so that at the next movement of the slide 15 in the feed direction such bristle bundle now against the one to be described Cutting device is moved.

It is essential for a fast way of working that the Width of the bristle magazine 4, that is the inner distance between them two lateral boundaries 9, approximately the diameter of the wrapped or packaged bristle bundle 3 corresponds so that in front of the area of the cutting device between the essentially encased in circular cross section or packed bristle bundles 3 and the limits 9 each 1, triangular cavities 16 can be seen, with two of the triangle sides of these triangular cavities 16 are curved according to the curvature of the bristle bundle 3.

This has the advantage that after cutting the casing 2 or the like place for a first relaxation of the bristle bundle and thus also for a loosening of the two parts 2a and 2b of the casing 2 and in particular for access to the Barrel or gripping instruments 10 is available, so that the Parts 2a and 2b laterally removed through the openings 11 can be without damaging bristles 7 or likewise pull out through these openings 11.

In addition, this arrangement allows one in the embodiment Cutting device, not shown, the two has obliquely directed and movable knives, which are arranged on or in the lateral boundaries 9 can and in the cutting process into triangular cavities 16 between the wrapped or packaged bristle bundles 3 can immerse. Such diagonally directed and Movable knives can so the casing 2 to each other cut diagonally opposite points and so the form both parts 2a and 2b.

In the exemplary embodiment, however, is a cutting device between the lateral boundaries 9 of the bristle magazine 4 arranged knife 17 is provided fixed, the cutting edge 18 directed against the direction of advance of the bristle bundle 3 is so that the advancement of the bristle bundles 3 their wrapping 2 presses against the knife edge 18, so that during the course of the Feed is cut twice, as shown in Fig.1 is.

With the devices 1 involved in the production of brushes are involved, so can first of all from a wrapping 2 or the same bundle of bristles 3 a bristle magazine 4 supplied with bristle stock, then the coating 2 or the like removed and then the bristles one further processing, in particular a takeover facility, preferably a bristle compartment disc 8 are supplied. The envelope 2 or the like is not only on one Side, but in the bristle magazine 4 at two spaced especially cut opposite points, so that the two resulting parts 2a and 2b according to the both sides of the bristle magazine 4 removed from this or can be pulled out. This allows quick and fast processing and saves a separate workstation for Remove the wrapper 2. The horizontal arrangement and The feed movement also makes guiding shorter Bristles 7 also in the area of the removal of parts 2a and 2b cut wrapping 2 to the sides.

To make brushes, especially toothbrushes initially enclosed by an envelope 2 or the like Bristle bundle 3 cut open in a bristle magazine 4, see above that the casing 2 can be removed. This will turn on two spaced apart, in particular opposite each other Cut through and the resulting two Parts 2a and 2b of the envelope 2 are after two opposite sides of the bristle magazine from this away.

Claims (15)

Method for producing brushes, in particular toothbrushes, first of all bristle bundles (3) enclosed by a covering (2), packaging, strapping or the like are fed to a bristle magazine (4), the covering, packaging, strapping or the like is removed and then the bristles are closed a further processing, in particular transported to and taken over by a bristle compartment disc (8), characterized in that the wrapping (2), packaging, strapping or the like in the bristle magazine (4) is cut through at two spaced locations and the two parts (2a , 2b) of this wrapping (2), packaging, strapping or the like are moved or pulled out of the bristle magazine (4) from the latter. A method according to claim 1, characterized in that the bristle bundles (3) with their covering (2), packaging, strapping or the like are conveyed and pressed against a knife (17) arranged approximately centrally between lateral boundaries (9) of this bristle magazine (4) and thereby cutting through the sheath (2) on opposite sides in the conveying direction or feed direction and in that the two parts (2a, 2b) of the sheath (2) or the like in the conveying direction inside the bristle magazine (4) behind the interface laterally out of the magazine (4) can be removed or pulled out. A method according to claim 1, characterized in that the wrapping (2), packaging, strapping or the like of the respective bristle bundle (3) by cutting obliquely from one side of the lateral boundary (9) each with their blades to slidable knives or similar cutting devices opposite points are intersected. Method according to one of claims 1 to 3, characterized in that the bristles (7) of the bristle bundle (3) and the surface lines of their sheath (2) or the like are arranged approximately vertically and transversely to themselves when they are fed into the magazine (4) to be advanced in a substantially horizontal direction. Device (1) for producing brushes, in particular toothbrushes, with a device for feeding bristle bundles (3) initially enclosed by a wrapping (2), packaging, strapping or the like to a horizontally arranged bristle magazine (4), within which the bristles ( 7) can be transported in a vertical position transversely to itself in the feed direction, the device (1) being a cutting device for cutting open the wrapping (2), packaging, strapping or the like and a device for detecting and removing the cut wrapping (2), packaging , Strapping or the like, characterized in that the cutting device within the bristle magazine (4) is arranged in the feed direction of the bristles (7) at a distance in front of a take-over device or bristle compartment disc (8) and for severing the wrapping (2), packaging, strapping or the like in opposite places au is formed and that the device in the area of this cutting device for grasping and transporting away the sheath (2) cut in two parts (2a, 2b) on both sides of two lateral boundaries (9) of the bristle magazine (4) each has at least one barrel or gripping instrument ( 10) that the lateral boundaries (9) of the bristle magazine (4) have an opening (11) in the area of the respective drum or gripping instrument (10) and that the respective drum or gripping instrument (10) has an opening (11) the respective limit (9) for grasping and pulling out one of the two parts (2a, 2b) of the cut envelope (2) or the like can be pushed through and retracted. Apparatus according to claim 5, characterized in that the height of the lateral boundaries (9) of the bristle magazine (4) is substantially equal to the length of the bristles (7) received therein and is, for example, 30 millimeters to 10 millimeters or less. Apparatus according to claim 5 and 6, characterized in that the openings (11) provided in the lateral boundaries (9) of the bristle magazine (4) for the gripping and gripping instruments (10) are enclosed on all sides and their vertical dimensions are less than the height of the Limits (9) and less than the length of the bristles (7). Device according to one of claims 5 to 7, characterized in that the openings (11) in the lateral boundaries (9) of the bristle magazine (4) are arranged approximately halfway up these boundaries (9). Device according to one of claims 5 to 8, by characterized that the respective barrel and Gripping instrument (10) pneumatically or hydraulically the breakthrough (11) and after detecting the to be removed part (2a, 2b) of the casing (2) or the like is retractable. Device according to one of claims 5 to 9, characterized in that the barrel or gripping instrument (10) is a tip with barbs (13) and / or a forceps-like gripper and / or a suction device operated with negative pressure. Device according to one of claims 5 to 10, characterized in that for the advancement of the bristles (7) within the bristle magazine (4) an in particular pneumatically or hydraulically actuable slide (15) is movable in the feed direction and that the slide (15) is also each Wrapping (2), packaging, strapping or similar bundles (3) acted upon and displaced in the direction of the cutting device. Device according to one of claims 5 to 11, characterized in that the bristle bundles (3) can be fed to the bristle magazine (4) horizontally from the side or vertically from above in the region of the slide (15) - which can be acted upon by the latter in the retracted position. Device according to one of claims 5 to 12, characterized in that the width of the bristle magazine (4) or the clear distance of its lateral boundaries (9) corresponds approximately to the diameter of the wrapped or packaged bristle bundle (3) and in front of the area of the cutting device between the Bristle bundles (3) and the boundaries (9), which are essentially circular in cross-section and still encased or packaged, each have approximately triangular cavities (16). Device according to one of claims 5 to 13, characterized in that the cutting device has two obliquely directed and movable knives which are arranged on or in the lateral boundaries (9) and during the cutting process into triangular cavities (16) between the enveloped or Immerse the packaged bundles of bristles (3). Device according to one of claims 5 to 13, characterized in that a knife (17) arranged approximately centrally between the lateral boundaries or boundary walls (9) of the bristle magazine (4) is provided as a cutting device, the cutting edge (18) against the feed direction the bristle bundle (3) is directed.

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