Brush Head And Method And Tool For Producing Same
A brush head, particularly a toothbrush head, may have a plurality of cleaning elements, in particular bristle tufts, which are anchored by an end section in a brush carrier, wherein the cleaning elements may be cast with positive engagement in blind-hole shaped retaining recesses. For producing such a brush head different cleaning elements, such as bristle tufts may be fused by heat and may be placed in a mold cavity to be over-molded.
1 . A method for producing a brush head in which at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof are embedded at one of their ends at least partially in a bristle carrier, wherein the ends are fused by heat before embedding, wherein different amounts of heat are supplied to each of the at least two different cleaning elements.
2 . The method according claim 1 , wherein the ends to be embedded are fused by subjecting them, either individually or in groups, to a targeted energy flow.
3 . The method according claim 2 , wherein the ends to be embedded are subjected to a targeted flow of hot gas or to targeted infrared radiation.
4 . The method according to claim 3 , wherein the targeted hot gas flow that is directed towards the end of the cleaning elements is created using separate nozzles.
5 . The method according to claim 3 , wherein the targeted infrared radiation that is directed towards the end of the cleaning elements is created using separate reflectors.
6 . The method according to claim 1 , wherein the at least two different cleaning elements are held by a carrier part in a predefined arrangement according to their desired distribution on the brush head.
7 . The method according to claim 1 , wherein the different amounts of heat that are supplied to each of the at least two different cleaning elements depend on at least one property in which the at least two different cleaning elements are distinguishable from each other.
8 . The method according to claim 7 , wherein the at least one property in which the at least two different cleaning elements are distinguishable is the material, the colour, the thickness, the outer shape, the composition and/or the distance to the source of the heat.
9 . The method according to claim 1 , wherein after the ends of the at least two different cleaning elements have been heated, a punching tool is moved against the softened ends for reshaping them.
10 . The method according to the preceding claim, wherein, the punching tool has a flat or a structured surface.
11 . A brush head having at least two different cleaning elements being embedded into a brush head, wherein the at least two different cleaning elements are fused before embedding using the method according to claim 1 .
12 . The brush head according to claim 11 , wherein the embedded ends of the at least two different cleaning elements are arranged in a common anchoring plane or in different anchoring planes being arranged above each other.
13 . The brush head according to claim 9 , wherein the at least two different cleaning elements include thickenings at the ends to be embedded after fusing that are different from one another.
14 . A device for producing a brush head in which at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof are embedded at one of their ends at least partially in a bristle carrier, comprising a hot-gas device for applying hot gas to one end of the at least two different cleaning elements, wherein the hot-gas device comprises a multiplicity of nozzles for applying varying flows of hot gas.
15 . A device for producing a brush head in which at least two different cleaning elements selected from the group consisting of different types of cleaning elements, distinctive cleaning elements of the same type and a combination thereof are embedded at one of their ends at least partially in a bristle carrier, comprising an infrared radiation device for applying infrared radiation to one end of the at least two different cleaning elements, wherein the infrared radiation device comprises a plurality of reflectors for applying varying degrees of infrared radiation.
16 . The device according to claim 14 , wherein the nozzles are designed to be adjustable with respect to one another.
17 . The device according to claim 15 , wherein the reflectors are designed to be adjustable with respect to one another.
18 . The device according to claim 14 , wherein the device comprises a temperature-control and/or regulation device for controlling and/or regulating the hot gas flows exiting from the nozzles independently of one another.
19 . The device according to claim 15 , wherein the device comprises a temperature-control and/or regulation device for controlling and/or regulating the infrared radiation existing from an infrared radiation source, independently of one another.
20 . The device according to claim 14 , wherein the device comprises a carrier part for holding the free ends of the at least two different types of cleaning elements or the at least two distinctive cleaning elements of the same type or the combination thereof which are not intended to be embedded.