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(11) | EP 0 161 033 A2 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Device for the checking of the attachment of bristle sets in brushes |
| (57) Device for the checking of the attachment of bristle sets in brushes with the characteristic
that it consists primarily of clamps (18 and 20-21) that can enclose a bristle set
(28) of a brush (27), mechanisms that can move the clamps (18 and 20-21) with respect
to each other in such a way that they clamp onto the enclosed bristle set (26), and
mechanisms that move the clamps (18 and 20-21) in such a way that they pull on the
bristle set (28) lengthwise and away from the brush base (27). |
[0001] This invention concerns a device for the checking of tne attachment of bristle sets in brushes.
[0002] The device, according to the invention, consists essentially of clamps that can enclose a bristle set of a brush, mechanisms that can move the clamps with respect to each other in such a way that they clamp onto the enclosed bristle set, and mechanisms that move the clamps in such a way that they pull on the bristle set lengthwise and away from the brush base.
[0003] In or5er better to illustrate the characteristics of the invention, a preferential form of application is described with reference to the accompanying drawings. The invention is not limited in any way whatsoever to this example.
Figure 1: a schematic side view with various cross- sections of a device acccording to the invention;
Figure 2: a view as indicated by Arrow F2 in Figure 1;
Figure 3: a view as indicated by lines III-III in Figure 1;
Figure 4: a larger scale presentation of a part that is indicated in Figure 3 by F4;
Figure 5: a view equivalent to that of Figuie 2 but in the second characteristic position;
Figure 6: a view as indicated by Arrow F6 in Figure 5;
Figure 7: a view as indicated by lines VII-VII in Figure 5.
[0004] The device according to the invention consists primarily of a support 1 that is immobile with respect to the machine frame and in which one or more guide rods 2 are provided, all this in such a way that the device is positively controlled according to the invention.
[0005] The rods 2 can move back and forth according to Arrows Fl and P2 and carry a support 3 for a pressure cylinder 4.
[0006] The piston rod 5 of the latter is connected to a slide 6 in which, in this case, three pins 7,8,9 are attached that can move in a recess 10 in the plate 11 of a frame 12 in which the slide 6 is guided and in which two arms 14,15 are placed that can be hinged around axle 13. The frame 12 is further provided with two guide rods 16,17 over which the support 3 can be moved.
[0007] The arm 14 has at the bottom a projection 18 that has a recess 19, while the arm 15 has two projections 20,21 in between which the projection 18 can move whereby these projections 20,21 each have an identical recess 22. The arms 14 and 15 show on their upper slanted portions, 23 and 24, respectively, that can move between pins 7 and 8 and 8 and 9, respectively.
[0008] The support 3 has also an adjustable stop 25, in this case formed by an adjustment screw, for a spring 26 of which the other end works together with the frame 12.
[0009] Both the pressure cylinder, not shown, that regulates rod 2 and the pressure cylinder 4 are double-action.
[0011] In the initial position, the device is in the retracted position, in other words, the projections or clamps 18 and 20 and 21 are situated in front of the brush 27 of which one or more sets of bristles 28 must be checked in order to determine if they are sufficiently solidly attached.
[0012] Then the rods 2 in the drawings move to the right with respect to the support 1 so that the device comes into the position as shown in Figure 1, in other words, with the clamps 18 and 20-21 in such a position that one bristle set 28 is enclosed by the recesses 19 and 20, while the adjacent bristle sets 28 are, in this case, pushed aside, as is shown on the drawings.
[0013] At this time, the pressure cylinder 4 is activated, whereby the slide 6 and as a result of this the pins 7, 8, and 9 are pushed upwards from the position as shown in Figures 1 and 2, which results in parts 23 and 24 of arms 14 and 15 being pushed apart, which results in clamps 18 and 20-21 coming together, all this in such a way that the bristle set 28 is clamped in the appropriate way in the recesses 19 and 22, whereby the pressure exerted by clamps 18 and 20-21 on the bristle set 28 is determined by the adjustment of the spring 26 by turning the screw 25.
[0014] Indeed, at a particular moment, slide 6 comes against the upper wall of the frame 12 whereby the further movement of the piston rod 5, against the action of the spring 26, results in moving the frame 12 together with the arms 14-15 over a suitable distance upwards whereby a well- determined force is exerted on the bristle set 28 lengthwise away from the brush.
[0015] This very slight upwards movement has the result that a bristle set 28 that is too loose will be pulled out of the brush base 27 so that such a brush can be discarded.
[0016] It is obvious that such an installation can be placed anywhere in the manufacturing cycle of a brush, in other words, directly on the machine after the insertion of the bristle sets, on the installations that process the brush further, or even on the packing machine, whereby obvious means will be provided that see to it that, when a fault is discovered, i.e., when a bristle set 28 comes loose, the machine or the production line is stopped.
1.- Device for the checking of the attachment of bristle sets in brushes with the
characteristic that it consists primarily of clamps 18 and 20-21 that can enclose
a bristle set 28 of a brush 27, mechanisms that can move the clamps 18 and 20-21 in
such a way with respect to each other that they clamp onto the enclosed bristle set
28, and mechanisms that move the clamps 18 and 20-21 in such a way that they pull
on the bristle set 28 lengthwise away from the brush base 27.
2.- Device as defined in claim 1 with the characteristic that the clamps 18 and 20-21,
respectively, are provided with a recess 19 and 22 that is of such a size that, with
opened clamps, the space formed by the recess 19 and 21 can be readily brought around
a bristle set 28.
3.- Device as defined in claim 2, with the characteristic that the clamp 18 can move
freely between the pair of clamps 20-21.
4.- Device as defined in one of the foregoing claims, with the charecteristic that
the clamps 18, respectively, 20-21, are fixed to the free end of arms 14-15 that are
hinged above these clamps to each other and to a frame 12 and whereby these arms can
work together on their upper end with mechanisms that permit the clamps 18 and 20-21
to be brought together or to be separated.
5.- Device as defined in claim 4, with the characteristic that the mechanisms that
permit the clamps to be brought together or separated are formed by the working together
of the parts 23-24 of the arms 14-15 moved toward each other with pins 7-8 and 8-9,
respectively, which are fixed to a slide of which the direction of movement is oriented
in the lengthwise direction of the arms 14-15.
6.- Device as defined in one of the foregoing claims, with the characteristic that
the aforesaid slide 6 is connected with the piston rod 5 and a pressure cylinder 4,
whereby the latter is attached to a support 3 that, by means of the guide rods 2,
which are themselves controlled by a pressure cylinder, is horizontally movable with
respect to a support 1 fixed by the machine frame.
7.- Device as defined in one of the foregoing claims, with the characteristic that
the frame 12 is movable by means of the guide rods 16-17 with respect to the aforesaid
support 3.
8.- Device as defined in one of the foregoing claims, with the characteristic that
a spring 26 is provided in between the aforesaid support 3 and the frame 12.
9.- Device as defined in claim 7, with the characteristic that the aforesaid spring
26 is placed between the frame 12 and an adjustable stop 25.