EP3705247B1 - Dispositif de cisaillement et machine de fabrication de brosses pourvu de dispositif de cisaillement ainsi qu'utilisation d'un dispositif de cisaillement - Google Patents

Dispositif de cisaillement et machine de fabrication de brosses pourvu de dispositif de cisaillement ainsi qu'utilisation d'un dispositif de cisaillement Download PDF

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Publication number
EP3705247B1
EP3705247B1 EP20160456.8A EP20160456A EP3705247B1 EP 3705247 B1 EP3705247 B1 EP 3705247B1 EP 20160456 A EP20160456 A EP 20160456A EP 3705247 B1 EP3705247 B1 EP 3705247B1
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EP
European Patent Office
Prior art keywords
blade
shearing device
counterpart
knife
cutting edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20160456.8A
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German (de)
English (en)
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EP3705247A1 (fr
Inventor
Thomas Rees
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Zahoransky AG
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Zahoransky AG
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Publication date
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Publication of EP3705247A1 publication Critical patent/EP3705247A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles
    • A46D1/06—Machines or apparatus for cutting bristles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
    • B26D1/03—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member with a plurality of cutting members
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A46D9/02—Cutting; Trimming
    • A46D9/025—Deflecting parts of the bristle field in order to trim the rest
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/36—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder
    • B26D1/365—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0666—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by screw or rotary spiral conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2657—Auxiliary carriages for moving the tool holders

Definitions

  • the invention relates to a shearing device with a knife and a counter knife assigned to the knife, a brush manufacturing machine with such a shearing device and the use of a shearing device for cutting bristle filaments to length.
  • shearing devices with fly knives are often used, particularly when machining brush bodies that have already been bristled. Shearing devices with fly knives are for example from the publications EP 0 994 212 A1 , DE 39 41 738 A1 , DE 195 09 063 A1 and DE 195 28 834 B4 previously known.
  • fly knives Although the use of fly knives has proven itself in principle, it is accompanied by a comparatively high level of noise development, which is perceived as annoying, and can therefore make noise protection measures necessary. Due to the fact that the fly blades move rapidly during operation and also during the setting up of the cutting devices, the user must also be extremely careful in order to avoid injuries. For reasons of occupational safety, it is necessary to define and adhere to safety measures for the operation of the cutting devices and to provide the cutting devices with appropriate protective devices in order to minimize the risk of injury when setting up and operating the cutting devices.
  • the previously known shearing devices thus require a safety-appropriate and comparatively complex construction, including the periphery of the shearing devices, in order to avoid the particular risk associated with the use of Flick knives go hand in hand with sufficient allowance. Particularly when setting up these shearing devices, particular care is required, since the fitter is also working in the working area of the shearing devices in which the fly blades move. This can complicate the handling of the previously known shearing devices.
  • the object of the invention is therefore to provide a shearing device, a brush manufacturing machine and a use of a shearing device of the type mentioned at the beginning, with which the disadvantages outlined above can be reduced or completely avoided.
  • a shearing device with the features of the independent claim directed to such a shearing device is first proposed.
  • a shearing device with a knife and a counter knife assigned to the knife is proposed to achieve the object, the knife being rotatable around an axis of rotation for generating a cutting movement relative to a counter knife edge of the counter knife and having at least one knife edge coiled around an axis of rotation.
  • the knife edge coiled around the axis of rotation is also moved relative to the counter knife edge of the knife.
  • a relative cutting movement is generated between the knife edge and the counter knife edge, with which bristle filaments, for example, can be shortened.
  • the shearing device With the proposed cutting concept of the shearing device, striking knives with which bristle filaments are literally chopped off are avoided.
  • the shearing device according to the invention enables a continuous and fluid cutting movement, which not only leads to better cutting results, but also to a higher one Occupational safety can lead to the operation of the cutting device.
  • the at least one coiled knife edge preferably wraps around the axis of rotation of the knife at least once, preferably several times, completely. This favors the greatest possible length of the knife edge and can contribute to a fine, precise cut.
  • the shearing device can meet particularly high safety requirements with a particularly high quality cutting pattern at the same time if the knife edge and the counter knife edge of the shearing device are spaced between 0 mm and 0.5 mm, preferably between 0 mm and 0.1 mm. In this way, the distance between the knife edge and the counter knife edge is in any case so small that it is impossible to accidentally get between the knife edge and the counter knife edge with your fingers. In this way, the risk of injury when using the shearing device can be significantly reduced and, above all, serious injuries that can occur when using fly knives can be avoided.
  • a distance between the knife edge and the counter knife edge can also remain constant when the shearing device is in operation. It is also possible for a distance between the axis of rotation and the counter knife to remain constant when the shearing device is in operation.
  • the cutting movement is generated by the rotation of the at least one coiled knife edge around the axis of rotation of the knife, without the need to change a distance between the knife and the counter knife.
  • the knife and the counter knife can thus preferably a constant distance between 0 mm and 0.5 mm, particularly preferably between 0 mm and 0.1 mm, to one another.
  • the distance between the knife and the counter knife of the shearing device can be kept constant to one another at least during a cut.
  • there is a cutting gap between the knife and the counter knife which is so small that even an intentional grip by a user between the knife and the counter knife can be effectively prevented. This can considerably reduce the risk of injury when the shearing device is in operation.
  • the counter knife edge has a main direction of extension which is transverse to the main direction of extension of the at least one coiled knife edge. It can also be provided here that the counter knife edge has a main direction of extent which is oriented in the direction of the axis of rotation or even parallel to the axis of rotation of the knife.
  • the counter knife edge of the counter knife is, according to the invention, a notched counter knife edge provided with cutting notches.
  • the bristle filaments of a brush to be processed with the shearing device can be reliably held within the cutting notches of the counter knife and can be severed by an interaction between the at least one coiled knife edge, which rotates during operation of the shearing device, and the counter knife edge. This without the bristle filaments being displaced too far by the rotating and coiled knife edge at least before the cut is made.
  • the knife can have a cylindrical base body.
  • the at least one coiled knife edge can be arranged and / or formed on this cylindrical base body.
  • the knife has two or three or four or more coiled knife edges.
  • the shearing device thus provides a knife that has several coiled circumferential knife edges and thus has a comparatively large cumulative edge length. This can increase the service life of the knife, so that replacement of the knife or regrinding of the knife has to take place less frequently than the knives of previously used shearing devices.
  • the shearing device can have a suction device. With the aid of the suction device, cutting waste arising during operation of the shearing device can be sucked off directly from the working area of the shearing device. This can promote a higher manufacturing quality and can also reduce the development of dust and / or dirt in the working area of the shearing device.
  • the shearing device has a suction housing that at least partially houses the knife rotating about its axis of rotation when the shearing device is in operation.
  • the cutting waste can be moved into the interior of the suction housing and extracted from there using the suction device already mentioned above.
  • the use of the suction housing can further reduce the development of dirt during operation of the shearing device.
  • the counter knife is with its counter knife edge on a, arranged and / or formed, for example, on the suction housing already mentioned above.
  • the suction housing of the suction device is assigned a double function, whereby the shearing device can ultimately be given a particularly compact shape.
  • the aforementioned cutting notches of the counter knife can be symmetrical and / or asymmetrical cutting notches.
  • the counter knife can have cutting notches which have an acute opening angle. With such cutting notches it is possible to avoid evasive movements occurring during the operation of the shearing device, in particular of bristle filaments which are to be shortened with the shearing device. If the counter knife has cutting notches which have an obtuse opening angle, it may be easier to introduce bristle filaments into the cutting notches of the counter knife and to fix them reliably there for the cutting operation.
  • cutting notches of the counter knife have cutting edges which are shorter than the opposite edges assigned to the cutting edges and / or which have a greater pitch than the respective opposite edges assigned to the cutting edges.
  • the cutting edges of the cutting notches can form a reliable abutment for cut material, in particular for bristle filaments, which is gripped by the rotating at least one coiled knife edge of the knife and with the cutting loaded by a cutting force. Similar to a pair of scissors, the bristle filaments can be severed particularly precisely with the aid of the counter-knife edge that interacts with the at least one coiled knife edge.
  • cutting notches of the counter knife can have a notch depth of between 0.1 mm and 10 mm.
  • the optimal notch depth can be selected depending on the material to be cut. For particularly fine material to be cut, for example for particularly fine bristle filaments from toothbrushes, it can be advantageous to choose a small notch depth. For thicker cut material, for example for bristles for the production of brooms, it can be advantageous to provide cutting notches which have a greater notch depth.
  • the at least one coiled knife edge can have a helix angle between 0.1 degrees and 45 degrees.
  • a smaller angle of inclination of the at least one coiled knife edge can promote a gentle cut.
  • the counter knife edge is a profiled counter knife edge. It is possible, for example, for the counter knife edge to have a wave profile.
  • the counter knife edge can be profiled, for example, convex or concave or convex-concave, if necessary.
  • the at least one coiled knife edge can also be a profiled knife edge.
  • the at least one coiled knife edge can have a wave profile and / or be convex, concave or convex-concave.
  • a profiled, coiled knife edge can be one of their imaginary Envelope has a corresponding profile. It is thus possible that an envelope of a profiled, coiled knife edge has a convex, concave and convex-concave profile and / or is provided with a wave profile.
  • the knife edges can be designed without interruption. In principle, however, it is possible for the knife edges to have notches and / or serrations and / or recesses. This can favorably influence the cutting behavior of the shearing device as a function of the material to be cut.
  • the counter knife edge can have a wedge angle between 45 degrees and 90 degrees, in particular between 85 degrees and 90 degrees.
  • the wedge angle of the counter knife edge can be understood to mean the angle that is spanned between the counter knife edge and a longitudinal plane of the counter knife.
  • the longitudinal plane of the counter knife can be aligned parallel to the axis of rotation of the knife. In the case of a counter knife with cutting notches, these can have a wedge angle between 45 degrees and 90 degrees, in particular between 85 degrees and 90 degrees.
  • the at least one coiled knife edge has a wedge angle between 10 degrees and 90 degrees.
  • the at least one coiled knife edge has a clearance angle between 1 degree and 30 degrees.
  • the counter knife can have an acute or an obtuse bevel angle.
  • the bevel angle of the counter knife can be an angle that is spanned between a bevel adjoining the counter knife edge and a longitudinal plane of the counter knife.
  • the longitudinal plane of the counter knife can be aligned parallel to the axis of rotation of the knife.
  • the bevel angle of the counter knife can be between 5 degrees and 45 degrees or, for example, between 45 degrees and 120 degrees.
  • a wedge angle of the counter knife edge is greater than or equal to a bevel angle of the counter knife that is spanned between a bevel adjoining the counter knife and a longitudinal plane of the knife.
  • the at least one coiled knife edge is arranged on a web that is coiled around the axis of rotation of the knife. This web can have a web width of 0.3 mm to 5 mm and / or a web height of 1 mm to 20 mm. Free spaces that can arise between adjacent sections of the coiled circumferential web on the knife can be used for receiving and removing cut waste. In this way, the cutting waste produced when the shearing device is used can be picked up by the knife rotating about its axis of rotation and transported, for example, in the direction of the suction device already mentioned above.
  • All embodiments of the shearing device according to the invention are distinguished by a comparatively low level of dirt development. While with beating knives, as they are already known from practice, when processing bristle filaments, the cutting waste can be shot away by the impulse of the fly knife at comparatively high speeds and possibly impair production in other areas, this is due to the shearing device according to the invention other cutting principle prevented.
  • the speed with which at least one turned The knife edge is moved past the counter knife edge in the direction of the axis of rotation can be significantly smaller.
  • the cut part of a bristle filament for example, receives a significantly smaller impulse from the impact of the knife edge of the shearing device, so that it is not shot out of the cutting area of the shearing device, or not too far. In interaction with the suction device already mentioned above, it can be effectively prevented that the cutting waste that occurs when the shearing device is used gets out of the cutting area of the knife.
  • the knife can have a transition surface parallel to the axis of rotation of the knife between the at least one coiled knife edge and a free surface of the knife edge.
  • the free surface can have a measurable width in the direction of the axis of rotation between 0.001 mm and 0.3 mm. This can simplify regrinding the knife.
  • cutting notches of the counter knife have a direction which is oriented at right angles or obliquely to a main direction of extension of the counter knife edge.
  • the direction of extension of the cutting notches of the counter knife can be oriented, for example, at an angle between 10 degrees and 80 degrees to the main direction of extension of the counter knife edge.
  • the shearing device can have a holder for a workpiece, in particular a holder for a brush, preferably for a round brush and / or for a toothbrush.
  • the shearing device has a multi-axis robot for handling a workpiece and / or for feeding and / or handling the workpiece on the knife.
  • a multi-axis robot for handling a workpiece and / or for feeding and / or handling the workpiece on the knife.
  • free-form machining of a workpiece can be carried out on the shearing device. In this way, brushes with particularly complex bristle field geometries can be produced.
  • the shearing device has a multi-axis robot on which the knife and / or the counter knife are arranged. In this way, the knife and / or the counter knife can be moved relative to a, preferably fixed, workpiece in order to carry out the previously mentioned free-form machining of the workpiece.
  • the shearing device can have a bristle displacement device.
  • a bristle displacement device With the aid of such a bristle displacement device, individual bristles, individual bristle bundles or groups of bristle bundles can be displaced so that they are not caught by the knife and counter knife of the shearing device.
  • complex bristle field geometries can also be generated with the aid of the shearing device.
  • Different groups of bristle filaments or bristle bundles can be shortened to different lengths. To do this, the bristle filaments are gradually processed.
  • Such bristle filaments which are initially not to be shortened or to be shortened to a different length, can be displaced out of the effective area of the shearing device with the aid of the bristle displacement device.
  • a brush manufacturing machine which has the means and features of the independent claim directed to such a claim.
  • a brush manufacturing machine of the type mentioned at the outset is proposed to equip it with a shearing device according to one of the claims directed to a shearing device.
  • the shearing device 1 has a knife 2 and a counter knife 3 assigned to the knife 2.
  • the knife 2 can be rotated about an axis of rotation R relative to a counter knife edge 4 of the counter knife 3 in order to generate a cutting movement.
  • the knife 2 of the shearing devices 1 shown in the figures has a total of four knife edges 5 coiled around its axis of rotation R. It can be clearly seen that each coiled knife edge 5 completely wraps around the axis of rotation R of the knife 2 several times.
  • the knife 2 and the counter knife 3 if at all, have a very small distance from one another in the position of use.
  • the cutting principle according to which the shearing device 1 works makes it unnecessary to change the distance between the knife 2 and the counter knife 3 for cutting.
  • a distance previously set between the knife 2 and the counter knife 3 is kept constant during the operation of the shearing device 1.
  • the distance can be between 0 mm and 0.5 mm, particularly preferably between 0 mm and 0.1 mm.
  • a distance between 0 mm and 0.1 mm is particularly suitable for processing bristle filaments of brushes with the shearing device 1, for example.
  • the Figures 6 , 10 and 14th illustrate that the counter knife edge 4 has a main direction of extent which is oriented transversely to a longitudinal axis of the counter knife 3.
  • the Figures 4 , 8th and 12th show that the counter knife edge 4 has a main direction of extent PF.1, which is also transverse to the main direction of extension of the four coiled knife edges 5 of the knife 2. It can also be seen that the main direction of extent PF.1 of the counter knife edge 4 of the respective counter knife 3 is also oriented in the direction of the axis of rotation R or even parallel to the axis of rotation R of the knife 2.
  • All of the counter knives 3 shown in the figures are counter knives 3, the counter knife edge 4 of which is a notched counter knife edge provided with cutting notches 6.
  • bristle filaments 7 of brushes 8 to be processed can be held on the counter knife 3. Due to the knife blades 5 rotating about the axis of rotation R, the bristle filaments 7 located in the cutting notches 6 can then close machining brushes 8 are reliably severed without the bristle filaments 7 being able to move too far when the rotating knife edges 5 move on cutting edges 9 of the cutting notches 6 in their cutting movement caused by the rotation about the axis of rotation R of the knife 2.
  • the Figures 3 , 7th and 11 also show that the knife 2 has a cylindrical base body 10. Four coiled knife edges 5 are formed on this cylindrical base body 10.
  • the ones in the Figures 1, 2 , 35 and the shearing devices shown in 40 and 41 are each provided with a suction device 11.
  • the suction device 11 is assigned to the knife 2 of the shearing device 1.
  • the suction devices 11 are provided with suction housings 12 which at least partially house the knives 2.
  • the suction housings 12 surround the knives 2 rotatably mounted in them over an angular range between 180 and 270 degrees.
  • separated pieces of bristle filament are conveyed into the interior of the respective suction housing 12 and finally sucked off with the aid of the suction device 11. In this way, contamination of the working area of the shearing device 1 by cutting waste can be reliably avoided.
  • the counter knife 3 is arranged or formed on the suction housing 12. In this way, the shearing device 1 is given a particularly compact shape with little space requirement. In embodiments of the shearing device not shown in the figures, the counter knife 3 is provided with symmetrical cutting notches.
  • All of the counter knives 3 shown in the figures have asymmetrical cutting notches 6. This is due to the fact that the cutting edges 9 of the cutting notches 6 have a greater slope or are steeper than the mating edges 13 respectively assigned to the cutting edges 9.
  • the enlarged detailed views of the counter knife 3 show differently designed cutting notches 6. Some of these cutting notches 6 have an acute opening angle, while other cutting notches 6 in comparison have more obtuse opening angles.
  • the cutting notches 6 have cutting edges 9 which are shorter than the counter edges 13 assigned to the cutting edges 9.
  • the cutting edges 9 also have a greater pitch than the mating edges 13 assigned to them.
  • the in Figure 5 The enlarged embodiment of the counter knife 3, the cutting edges 9 of the cutting notches 6 are at an angle of slightly less than 90 degrees to a main direction of extent PF. 1 of the counter knife edge 4 oriented.
  • the angle that is spanned between the respective cutting edge 9 in the main direction of extent of the counter knife edge 4 is preferably between 45 degrees and 90 degrees.
  • the cutting notches 6 of the counter knife 3 shown in the figures have a notch depth between 0.1 mm and 10 mm.
  • the notch depths can be selected depending on the material that is to be cut with the aid of the shearing device 1.
  • the coiled knife edges 5 of the knives 2 shown in the figures have an angle of inclination which, depending on the application, can be between 0.1 degrees and 45 degrees.
  • the Figures 11 to 14 and 36 to 41 show counter-knife 3, the counter-knife edges 4 of which are profiled counter-knife edges.
  • the ones in the Figures 11 to 14 Counter knife cutting edges 4 shown are convex-concave profiled or curved counter knife cutting edges 4, which thus have a wave profile.
  • the ones in the Figures 38 to 41 The counter knife cutting edges 4 shown have a semicircular profile, that is to say they are concave profiled counter knife cutting edges 4.
  • the knife edges 5 of the knives 2 are profiled to correspond to the profile of the counter knife edges 4 assigned to them. Accordingly, it is in the Figures 11 to 13 Knife 2 shown equipped with convex-concave profiled knife edges 5. That in the Figures 38 to 41 The knife 2 shown has knife edges 5 running helically along a convex line.
  • the knives 2 with profiled knife edges 5 have imaginary envelopes, which in turn are correspondingly profiled.
  • a profiled knife edge 5 can be understood to mean a knife edge 5 around which an imaginary envelope can be placed, which in turn has a corresponding concave, convex and / or convex-concave and / or corrugated profile.
  • the knife edges 5 shown in the figures are designed without interruption. In principle, however, it is possible to provide the knife edges 5 with notches or serrations or recesses. This can favorably influence the cutting behavior of the shearing device 1 as a function of the material to be cut.
  • the counter knife edge 4 and in particular the cutting notches 6 of the counter knife edge 4 of the counter knife 3 shown in the figures have a wedge angle between 45 degrees and 90 degrees, in particular between 85 degrees and 90 degrees.
  • the wedge angle can be understood to mean the angle that is spanned between the counter knife edge 4 and an imaginary longitudinal plane of the counter knife 3.
  • the coiled knife edges 5 have wedge angles between 10 degrees and 90 degrees.
  • the coiled knife edges 5 also have clearance angles between 1 degree and 30 degrees.
  • the counter knife 3 can have an acute or an obtuse bevel angle, the bevel angle being the angle that is spanned between a bevel 14 adjoining the counter knife edge 4 and an imaginary longitudinal plane of the counter knife 3.
  • the bevel angle of the counter knife 3 can be between 5 degrees and 45 degrees or between 45 degrees and 120 degrees.
  • a wedge angle of the counter knife edge 4, in particular wedge angle of the cutting notches 6 of the counter knife edge 4, are in the Figures 14 , 18th , 20th , 22, 24 and 26
  • the counter knife 3 shown is larger than a bevel angle of the respective counter knife 3, which is spanned between the bevel 14 adjoining the counter knife edge 4 and the previously mentioned longitudinal plane of the counter knife 3.
  • the longitudinal plane in the figures Counter knife 3 shown is parallel to a planar front side 15 of counter knife 3.
  • the coiled knife edges 5 of the knives 2 of the shearing devices 1 shown in the figures are each arranged on a web 16 which is coiled around the respective axis of rotation R of the knife 2.
  • the webs 16 have a web width between 0.3 mm and 5 mm and a web height of 1 mm to 20 mm and can be produced, for example, by milling the base body 10.
  • the knife 2 shown has between its coiled knife edges 5 and a respective free face 17 of the respective knife edge 5 a transition surface 18 parallel to the axis of rotation R of the knife 2.
  • This transition surface 18 has a measurable width between 0.001 mm and 0 in the direction of the axis of rotation R of the knife 2, 3 mm and serves to simplify the regrinding of the knife 2 and its coiled knife edges 5.
  • the cutting notches 6 of the respective counter knives 3 shown have a direction which is oriented at right angles to the main direction of extent PF.1 of the counter knife blade 4 and also at right angles to the axis of rotation R of the respective knife 2 of the shown cutting device 1.
  • the other counter-knife 3 have cutting notches 6, the direction of which is oriented obliquely to a main direction of extension of the counter-knife edge 4 and also obliquely to the axis of rotation R of the knife 2 when the counter-knife 3 is in its position of use on the shearing device 1.
  • the orientation of the directions of the cutting notches 6 can be between 10 degrees and 80 degrees.
  • the result of these obliquely aligned cutting notches 6 are relatively small wedge angles at the cutting edges 9 of the cutting notches 6, which can ultimately promote a finer cut.
  • Each shearing device 1 shown in the figures also has a holder 19 for a workpiece, here a brush 8.
  • this holder 19 is a pivotably mounted holder 19, matched to a round brush, which is also set up to set the round brush 7 clamped on it in rotation for processing on the shear device 1.
  • the shearing device 1 shown has a holder 19 which is designed to hold a toothbrush.
  • the holder 19 can be moved here in three different axes relative to the knife 2 and the counter knife 3 in order to feed the bristle filaments 7 of the brush clamped on the holder 19 to the knife 2 and the counter knife 3.
  • the shearing device 1 shown has a multi-axis robot 20 for handling the brush, more generally speaking the workpiece 8.
  • this multi-axis robot 20 on which a holder 19 for the brush 8 is arranged, the brush 8 can be fed to the knife 2 and the counter knife 3 of the shearing device 1 for processing and the brush 8 can also be handled.
  • the shearing device 1 has a multi-axis robot 20 on which both the knife 2 and the counter knife 3 of the shearing device 1 are arranged.
  • the shearing device 1 shown has a bristle displacement device 21. With the help of the bristle displacement device 21, bristle filaments 7 can be displaced A brush clamped on the holder 19 of the shearing device 1 can be displaced laterally in order to be able to process individual bristle filaments 7 or groups of bristle filaments 7 separately from the other bristle filaments 7 of the brush 8.
  • FIG. 2 shows a brush manufacturing machine, designated as a whole by 22, which is equipped with a shearing device 1.
  • the brush manufacturing machine 22 has a control unit 23 with which functional units of the brush manufacturing machine 22, such as a rotary indexing table 24 and of course also the shearing device 1 and above all the multi-axis robot 20, can be controlled.
  • a vacuum source 25 of the suction device 11 already mentioned and described in detail can be seen adjacent to the control unit 23.
  • a connecting hose via which the suction housing 12 of the suction device 11, which is arranged on the multi-axis robot 20, is connected to the vacuum source 25 of the suction device 11.
  • An input station 26 and a removal station 27 of the brush manufacturing machine 22 are assigned to the rotary indexing table 24.
  • Processed brushes 8 can be removed from the rotary indexing table 24 of the brush manufacturing machine 22 via the removal station 27. Unprocessed brushes 8 are fed via input station 26 to rotary indexing table 24 and via this to shearing device 1 for processing the bristle filaments 7 of brushes 8.
  • the shearing device 1 shown in the figures is therefore suitable for cutting bristle filaments 7 to length when processing and manufacturing brushes 8.
  • the shearing device 1 which has a knife 2 with at least one knife edge 5 which is coiled and rotatable about an axis of rotation R of the knife 2.
  • the knife edge 5 is assigned a counter knife edge 4 of a counter knife 3.
  • the shearing movements by means of which, for example, bristle filaments 7 of brushes 8 to be processed can be cut to length, are generated by the relative rotational movement of the at least one coiled knife edge 5 to the preferably stationary counter knife edge 4 of counter knife 3. Since the knife 2 and the counter knife 3 can keep their distance from one another constant during the operation of the shearing device 1, the shearing device 1 is characterized by a comparatively low risk of injury when it is in use.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (25)

  1. Dispositif de cisaillement (1) comprenant une lame (2) et une lame complémentaire (3) associée à la lame (2), dans lequel la lame (2) pour produire un mouvement de coupe est amenée en rotation autour d'un axe de rotation (R) par rapport à un tranchant de lame complémentaire (4) de la lame complémentaire (3) et présente au moins un tranchant de lame en spirale (5) autour de son axe de rotation (R), caractérisé en ce que le tranchant de lame complémentaire (4) est un tranchant de lame complémentaire cranté qui est pourvu de crans de coupe (6).
  2. Dispositif de cisaillement (1) selon la revendication 1, dans lequel ledit au moins un tranchant de lame en spirale (5) entoure entièrement l'axe de rotation (R) de la lame (2) au moins une fois, de préférence plusieurs fois, et/ou dans lequel la lame (2) et la lame complémentaire (3) présentent une distance comprise entre 0 mm et 0,5 mm, de préférence entre 0 mm et 0,1 mm, l'une par rapport à l'autre et/ou dans lequel une distance entre la lame (2) et la lame complémentaire (3) est constante lors du fonctionnement du dispositif de cisaillement (1).
  3. Dispositif de cisaillement (1) selon la revendication 1 ou 2, dans lequel le tranchant de lame complémentaire (4) présente une direction d'étendue principale qui est orientée transversalement à la direction d'étendue principale dudit au moins un tranchant de lame en spirale (5) et/ou en direction de l'axe de rotation (R) ou parallèlement à l'axe de rotation (R) de la lame (2).
  4. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel la lame (2) présente un corps de base cylindrique (10), sur lequel ledit au moins un tranchant de lame en spirale (5) est disposé et/ou est réalisé, et/ou dans lequel la lame présente deux ou trois ou quatre tranchants de lame en spirale (5), ou plus.
  5. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de cisaillement (1) présente un dispositif d'aspiration (11), en particulier dans lequel le dispositif d'aspiration (11) est associé à la lame (2).
  6. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de cisaillement (1) comprend un boîtier d'aspiration (12) qui contient au moins en partie la lame (2).
  7. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel la lame complémentaire (3) est disposée et/ou est réalisée sur le boîtier d'aspiration (12).
  8. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel la lame complémentaire (3) comporte des crans de coupe (6) symétriques et/ou asymétriques.
  9. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel la lame complémentaire (3) comporte des crans de coupe (6) qui présentent un angle d'ouverture aigu, et/ou dans lequel la lame complémentaire (3) comporte des crans de coupe (6) qui présentent un angle d'ouverture obtus.
  10. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel les crans de coupe (6) de la lame complémentaire (3) présentent des arêtes de coupe (9) qui sont plus courtes que des arêtes complémentaires (13) associées aux arêtes de coupe (9) et/ou qui présentent une inclinaison plus grande que des arêtes complémentaires (13) associées aux arêtes de coupe (9).
  11. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel les crans de coupe (6) de la lame complémentaire (3) présentent une profondeur de cran qui est comprise entre 0,1 mm et 10 mm.
  12. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un tranchant de lame en spirale (5) présente un angle d'inclinaison qui est compris entre 0,1° et 45°.
  13. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le tranchant de lame complémentaire (4) est un tranchant de lame complémentaire profilé, en particulier dans lequel le tranchant de lame complémentaire (4) présente un profil ondulé et/ou est profilé de manière convexe ou concave ou concavo-convexe, et/ou dans lequel ledit au moins un tranchant de lame en spirale (5) est un tranchant de lame profilé, en particulier dans lequel ledit au moins un tranchant de lame en spirale (5) présente un profil ondulé et/ou est profilé de manière convexe, concave ou concavo-convexe et/ou dans lequel une enveloppe imaginaire de la lame (4) présente un profil ondulé et/ou est profilée de manière convexe, concave ou concavo-convexe.
  14. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le tranchant de lame complémentaire (4), et en particulier ses crans de coupe (6), présente(nt) un angle de taillant qui est compris entre 45° et 90°, en particulier entre 85° et 90°, et/ou dans lequel ledit au moins un tranchant de lame en spirale (5) présente un angle de taillant qui est compris entre 10° et 90°.
  15. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un tranchant de lame en spirale (5) présente un angle de dépouille qui est compris entre 1° et 30° et/ou dans lequel les lames complémentaires (3) présentent un angle de chanfrein aigu ou un obtus, qui est sous-tendu entre un chanfrein (14) adjacent au tranchant de lame complémentaire (4) et un plan longitudinal de la lame complémentaire (3), en particulier un angle de chanfrein qui est compris entre 5° et 45° ou un angle de chanfrein qui est compris entre 45° et 120°.
  16. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel un angle de taillant du tranchant de lame complémentaire (4), en particulier un angle de taillant des crans de coupe (6), est plus grand ou aussi grand qu'un angle de chanfrein de la lame complémentaire (3), qui est sous-tendu entre un chanfrein (14) adjacent au tranchant de lame complémentaire (4) et un plan longitudinal de la lame complémentaire (3).
  17. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel ledit au moins un tranchant de lame en spirale (5) est disposé sur une nervure (16) qui fait le tour en spirale de l'axe de rotation (R) de la lame (2), en particulier dans lequel la nervure (16) présente une largeur de nervure qui est comprise entre 0,3 mm et 5 mm et/ou une hauteur de nervure qui est comprise entre 1 mm et 20 mm.
  18. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel la lame (2) présente entre ledit au moins un tranchant de lame en spirale (5) et une face de dépouille (17) du tranchant de lame (5) une surface de transition (18), de préférence parallèle, par rapport à l'axe de rotation (R) de la lame (2) qui présente une largeur pouvant être mesurée en direction de l'axe de rotation (R) qui est comprise entre 0,001 mm et 0,3 mm.
  19. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel des crans de coupe (6) de la lame complémentaire (3) présentent une direction de tracé qui est orientée de manière perpendiculaire ou oblique par rapport à une direction d'étendue principale du tranchant de lame complémentaire (4), en particulier suivant un angle qui est compris entre 10° et 80°.
  20. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de cisaillement (1) présente un support (19) pour une pièce (8), en particulier un support (19) pour une brosse, de préférence pour une brosse ronde et/ou pour une brosse à dents.
  21. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de cisaillement (1) comprend un robot à axes multiples (20) pour manipuler une pièce (8) et/ou pour amener et/ou manier la pièce (8) sur la lame (2).
  22. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de cisaillement (1) comprend un robot à axes multiples (20), sur lequel la lame (2) et/ou la lame complémentaire (3) est (sont) disposée(s).
  23. Dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes, dans lequel le dispositif de cisaillement (1) comprend un dispositif de déplacement de poils (21).
  24. Machine de fabrication de brosse (22) comprenant un dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes.
  25. Utilisation d'un dispositif de cisaillement (1) selon l'une quelconque des revendications précédentes pour mettre des filaments de poils (7) à la longueur voulue.
EP20160456.8A 2019-03-07 2020-03-02 Dispositif de cisaillement et machine de fabrication de brosses pourvu de dispositif de cisaillement ainsi qu'utilisation d'un dispositif de cisaillement Active EP3705247B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019105877.5A DE102019105877B4 (de) 2019-03-07 2019-03-07 Abschervorrichtung und Bürstenherstellungsmaschine mit Abschervorrichtung sowie Verwendung einer Abschervorrichtung

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EP3705247A1 EP3705247A1 (fr) 2020-09-09
EP3705247B1 true EP3705247B1 (fr) 2021-06-30

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EP20160456.8A Active EP3705247B1 (fr) 2019-03-07 2020-03-02 Dispositif de cisaillement et machine de fabrication de brosses pourvu de dispositif de cisaillement ainsi qu'utilisation d'un dispositif de cisaillement

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US (1) US11445814B2 (fr)
EP (1) EP3705247B1 (fr)
CN (1) CN111657662B (fr)
DE (1) DE102019105877B4 (fr)
ES (1) ES2890475T3 (fr)

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Publication number Publication date
ES2890475T3 (es) 2022-01-20
EP3705247A1 (fr) 2020-09-09
CN111657662B (zh) 2023-06-23
DE102019105877A1 (de) 2020-09-10
US20200281348A1 (en) 2020-09-10
US11445814B2 (en) 2022-09-20
DE102019105877B4 (de) 2022-10-13
CN111657662A (zh) 2020-09-15

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