EP0018021A2

EP0018021A2 - Process for shaping and moving, by means of a charger, an anchor in a brush processing machine and charger applying this process

Info

Publication number: EP0018021A2
Application number: EP80200195A
Authority: EP
Inventors: Leonel Polydore Boucherie
Original assignee: GB Boucherie NV
Current assignee: GB Boucherie NV
Priority date: 1979-04-11
Filing date: 1980-03-03
Publication date: 1980-10-29
Also published as: EP0018021A3; DE2914698A1

Abstract

The present invention pertains to a process, for shaping and moving, by means of a charger, an anchor in a brush processing machine, characterized in that it mainly consists in feeding anchor wire (4) and cutting off the anchor (17) at a location which is situated out of the way of the needle (6) of the charger, this being done whilst the needle moves in its guiding device above the point where the anchor is being shaped; and transferring the cut off anchor (17) to the way of the needle (6) during the backward motion of the needle (6) as soon as it has passed the location of the cut off anchor (17).

Description

The present invention relates to a process, for shaping and moving an anchor, for fixing a bundle of fibres in a brush body, and to the charger applying this process, the aforesaid anchor being formed, for instance, by a small rectangular plate which is cut off from a so called anchor wire.
It is known, indeed, that for the known chargers, anchor wire is being unwound from a spool, the anchor wire being introduced step by step in the charger, whilst in this charger a cutting device is provided for, which successively cuts off from the anchor wire a small rectangular plate or anchor, after which a so called bundle plucker having fed a small bundle of fibres into the charger, this anchor is pushed forward by a so called needle until it contacts the aforesaid small bundle and finally the anchor, with the aforesaid bundle of fibres, is introduced and fixed in a hole of the brush body.
For the chargers of the so called anchor type known up to date, the aforesaid introduction of anchor wire and cutting off of the anchor are taking place at a same level, which is the level of the aforesaid needle, resulting in it being necessary to wait for the needle to come back after having fixed a bundle of fibres by means of an anchor in the brush body, before it becomes possible to displace the anchor wire by one step and cut off an anchor.
The drawback of this is that the rapidity with which the aforesaid type of charger can fix bundles of fibres in a brush body is very limited.
Therefore, thevobject of the invention is a charger by means of which, in comparison with the known chargers, it is possible appreciably to increase the speed of fixing bundles of fibres in a brush body, which is obtained in that, according to the invention, the dead time, resulting in the case of the known chargers from the fact that it is necessary to wait for the needle to come back before the feeding with wire and the cutting off of an anchor can take place, is precluded.
For this purpose, the process according to the invention mainly consists in feeding the anchor wire and cutting off an anchor at a location which is out of the way of the needle of the charger, this being done during the forward motion of the aforesaid needle, and to bring the cut off anchor in the way of the needle directly after the needle in its backward motion has passed the location of the cut off anchor.
More especially still, the feeding of the anchor wire and cutting off of the anchor are carried out at a level which differs from the level at which the needle moves, so that the anchor-wire supply can already start from the moment when the aforesaid needle takes along the preceding anchor in its forward motion towards the brush body, on the one hand, and that always during the forward motion of the needle a following anchor can already be cut off, on the other hand.
In this way there is obtained that the following cut off anchor is already kept prepared when the needle, after fixing a bundle of fibres, moves backwards again, so that when the needle in its backward motion has passed the point of the wire supply, the cut off anchor is moved to the - level of the needle, which will subsequently take it along in its following forward motion, during which wire is fed again and an anchor is cut off.
In this way there is obtained a charger which allows much more rapidly, even with more than twice the speed, to fix bundles of fibres in a brush body, resulting in the production or in other words the output of the brush processing machine also more than doubling.
In order to throw more light on the characteristics of the invention, a preferred embodiment will be described here, as an example without any limiting character, reference being made to the attached drawings, in which :

Figure 1 shows a bird's-eye view of a charger according to the invention;
Figure 2 shows a section according to line II-II in Figure 1;
Figure 3 shows a section according to the line III-III in Figure 2;
Figure 4 shows on a larger scale the part which is indicated as F4 in Figure 3;
Figures 5 and 6 are sections which are similar to the one of Figure 4, but for other relative positions of the charger;
Figure 7 is a view similar to the one of Figure 2, but for a variant of execution;
Figures 8, 9 and 10 show a bird's-eye view of Figure 7 in three different positions.

As shown in the Figures 1 through 6, the charger mainly comprises a part 1 which is fixed in relation to the machine wherein there is fixed a component 2 with a channel or guide 3 for the anchor wire 4, whilst in this part 1, in this case, a slide 5 is provided for, which in a known way can have a reciprocating motion in relation to a brush body which is not shown and in this slide a guide for the needle 6 is provided for. This guide mainly consists of a channel 7 in the die plate 8, with which a punch 9 can cooperate in order to cut off an appropriate anchor from the anchor wire 4.
In the aforesaid slide 5, four spaces, respectively 10, 11, 12 and 13, have been provided in order to allow the slide 5 to move without being hindered by the fixed parts 2 and 9, nor by the bundle plucker 14, which is for supplying the charger with a bundle of fibres 15.
As is clearly shown by the drawings and more in particular by the Figures 4, 5 and 6, the channel 7, wherein the needle 6 is moved, is located at a level which in this case is situated above the level of the channel in the guide 3, into which the anchor wire 4 is being fed.
From the Figures 4 and 5 it is clear, indeed, that feeding the anchor wire 4 is simply done by pushing same in the guide 3 until it contacts the wall 16, so that the correct position of the anchor wire is obtained, after which the punch 9 is moved upwards, see Figure 5, in order to cut off an anchor 17 from the anchor wire, on the one hand, and to move this anchor 17 upwards, up to the level of the needle 6, on the other hand, see Figure 6.
At this moment, it is clear that the forward motion of the needle 6 is sufficient in itself to move the anchor 17 forwards until it comes into contact with the bundle of fibres 15 fed into the charger by a bundle plucker and then to move the small anchor with the aforesaid bundle of fibres through the head of the charger and subsequently into the brush body with which the charger will co-operate.
It is clear that in this way one obtains that, as soon as the needle 6 has pushed the anchor 17 from above the punch 9, the punch may move downwards again so that, whilst the needle 6 is still moving forwards, the anchor wire 4 can again be brought into the position as shown in Figure 4, on the one.hand,_.and the punch, as shown in Figure 5, can again cut off an anchor 17, on the other hand; the upward motion of the small anchor by means of the punch 9 being of course co-ordinated with the motion of the needle 6 so that the anchor 17 will be introduced into the guide 7 only when the forward end of the needle 6 will have passed the anchor 17 in the backward motion of the said needle.
The thickness of the die 8, respectively of the guide wherein the channel 7 for the needle is provided for, will be a thickness which is a little.greater than twice the thickness of the anchor wire, respectively twice the thickness of the needle 6, so that there remains a little free play, in order to avoid friction between the needle when moving backwards and the anchor 17 which, at this moment, is already partially lifted.
In comparison with the known chargers, one consequently obtains, as already discussed, an important gain in time, because it is no more necessary to wait until the needle 6 has entirely come back for feeding the anchor wire 4 and cutting off an anchor 17.
In the Figures 7 through 10 is shown an execution of the charger according to the invention in which the slide 5 consists of two parts, namely a lower part 5A on which the top part 18 is fixed and a part 5B in which the needle 6 moves.
The operation for feeding anchor wire 4, cutting off an anchor 17 and moving this anchor forwards by means of the needle 6 takes place in the same way as discussed in the preceding example, but in this case a relative motion takes place between the lower slide 5A and upper slide 5B during the forward motion of the anchor 17, so that, when the anchor 17 must be transferred from the aforesaid channel 7 into the channel 18 which is formed by the guides 19 and 20, the channels 7 and 18 are adjacent and in line the one with the other, so that the passage from the one channel to the other takes place without any difficulty, whereby the reliability of the charger is considerably increased.
As shown in Figure 8, the bundle plucker 14 brings a small bundle of fibres 15 to-the charger.
In the Figures 8, 9 and 10, the lower slide 5A remains in the same position.
In Figure 8, the slide 5B lies in its backward position, in other words against the fixed part 1 of the charger, whereby there remains a maximum distance Al between the adjacent ends of the channels 18 and 7, until the small bundle of fibres is in line with the channels 18 and 7.
In Figure 9, the small bundle of fibres 15 is supplied to the charger, in other words the small bundle 15 is transferred between the adjacent ends of the channels 18 and 7, the upper slide 5B being moved forwards on a distance Bl, whilst in Figure 10, there is shown the position in which the slide 5B has been moved in relation to the slide 5A so that the aforesaid distance Al has decreased to 0, in other words, the adjacent ends of the guides 7 and 18 are in contact with each other, whilst the distance B2 has become equal to the aforesaid distance Al.
At this moment, both the slides 5A and 5B are moved forwards together, as is the case when the charger is provided with only one slide, for transferring the bundle of fibres 15 by means of the anchor 17 to the brush body and fixing the bundle with the anchor in the brush body, which is possible because of the needle 6 being moved with a greater speed than slide 5B, during the forward motion of slide 5B, and of the forward motion of the needle continuing farther, after the charger has been brought approximately against the brush body, in order to fix the small bundle of fibres in the brush body by means of the anchor.
In this way there is obtained a charger in which the transfer of the anchor from the channel 7 into the channel 18 can take place without difficulty.
It is clear that the present invention is by no means limited to the embodiments described as examples and illustrated in the attached drawings.

Claims

1.- Process for shaping and moving, by means of a charger, an anchor in a brush processing machine, characterized in that it mainly consists in feeding anchor wire (4) and cutting off the anchor (17) at a location which is situated out of the way of the needle (6) of the charger, this being done whilst the needle moves in its guiding device above the point where the anchor is being shaped; and transferring the cut off anchor (17) to the way of the needle (6) during the backward motion of the needle (6) as soon as it has passed the location of the cut off anchor (17).

2.- Charger applying the process according to claim 1, which is of the type which is formed by a slide (5), which can be fed with bundles of fibre (15) and in which along the longitudinal direction of this slide (5) a needle (6) can move in the latter, whilst, transversely orientated in relation to the longitudinal direction of the slide (5), an anchor wire (4) is being fed, from which at the crossing between needle (6) and anchor wire (4) an appropriate anchor (17) can be cut off by a punch (9), characterized in that the supply of anchor wire (4) and cutting off of the anchor (17) take place at a level which is different from the level of the aforesaid needle (6).

3.- Charger according to claim 2, characterized in that the needle (6) is situated at a higher level than the one at which the anchor wire (4) is being fed.

4.- Charger according to claim 2 or 3, characterized in that after the anchor (17) has been cut off from the anchor wire (4), the punch (9) moves the anchor (17) sufficiently to bring it in the way of the needle (6) of the charger.

5.- Charger according to one of the preceding claims, characterized in that feeding the anchor wire (4), cutting off an anchor (17) and partially moving the anchor (17) to the level of the needle guides (7) takes place whilst the aforesaid needle (6) is still moving forwards and/or possibly already backwards, the complete transfer of the anchor (17) to the level of the needle (6) taking place when the forward end of the needle (6) in the backward motion of the said needle has past the anchor (17).

6.- Charger according to one of the preceding claims, characterized in that the aforesaid slide (5) comprises two parts, namely a lower part (5A) on which the head of the charger is fixed and an upper part (5B) which also guides the aforesaid needle (6).

7.- Charger according to claim 6, characterized in that after a bundle of fibres. (15) has been fed into the charger, the two slide parts (5A-5B) are so brought the one against the other that the guiding devices for the needle (6) and anchor (17) are completely placed the one against the other, resulting in the needle guides (7) and guides (18) forming one continuous and uninterrupted whole, before the bundle of fibres (15) is taken along by the anchor (17).