TW202135702A - Brush reworking apparatus and method for reworking brushes - Google Patents

Abstract

The invention relates to a brush reworking apparatus for removing excessively protruding bristles (14) from a group of bristles (16), which apparatus has at least three parallel, plate-like clamping parts (24-34), each of which has a wedge-shaped, tapered boundary edge (38). The clamping parts (24-34) divide the group of bristles (16) into segments and are moved toward each other such that bristles (14) protruding between adjacent clamping parts are clamped and then pulled out. The invention furthermore relates to a method for reworking brushes.

Description

Brush dressing equipment and method for dressing brush

The present invention relates to a brush trimming device for removing protruding bristles from a bristle body. The bristles of the bristle body are fixed to a bristle carrier and form at least one part of a brush together with the bristle carrier, wherein the bristle body has a free end.

In addition, the present invention further relates to a method for removing protruding bristles from the bristle body of a brush.

There are different ways to fix the bristles or all the bristle bundles to the bristle carrier. This can be achieved by means of anchors or rings, which are pressed into the wall or bottom of the opening in the bristle carrier, or without the use of anchors. If an anchor-free method is used, the bristles are, for example, overmolded at their fixed ends, or inserted through the openings in the bristle carrier, and then welded or fused to the back surface. Another method is to insert the thickened fixed end of the bristles or bristle bundle into the blind hole, and narrow the front end of the fixed end in the edge portion through the deformation of the bristle carrier. The proposed methods for fixing without anchoring are only examples, and do not limit the present invention. It cannot be ruled out that the free ends of one or more bristles protrude too far relative to the bristle body, which is applicable to all the methods of making brushes. The bristle body does not terminate on a plane or, for example, just terminates in a jagged or curved shape. In fact, this is ideal in many cases because there is a certain degree of inconsistency in the position of the end of the bristles, which will make the brush function better. For example, a hair comb, through a certain degree of "protrusion" at the ends of the bristles, that is, some deliberately protruding bristles, can more easily enter the hair. In a toothbrush, the ends of the bristle body have greater flexibility. If a large number of bristles are deliberately protruding from other bristles, the gums can be protected. Therefore, for many brushes, the bristles inside the bristle body ideally end within a certain tolerance range, and are not exactly on a plane. The ends of all bristles terminate in a plane, which is technically impossible because there will always be manufacturing tolerances. This is particularly related to fixing the bristle bundle by means of anchors or rings, because several bristles must be folded through the anchors or rings, and it often happens that individual bristles are not divided into equal parts by the anchors or rings. Two halves of the length.

Therefore, the brush manufacturer sets a certain tolerance, and the ends of the bristles of the bristle body should or are allowed to terminate within the tolerance range.

In the prior art, there have been many different methods for how to trim bristles that protrude too far or a brush with such bristles. One method is to cut off the protruding bristles. But these bristles no longer have rounded corners, but sharp edges. This can only be accepted if the other bristles are not chamfered. If the bristles are pointed, cutting off individual bristles is equally unacceptable. Because the subsequently cut bristles are in the bristle body, it is impossible to make sharp bristles.

For the chamfered and pointed bristles, they protrude too far relative to the bristle body, so a method is adopted, that is, to manually pull out the protruding bristles from the bristle body.

A method is known from DE 37 42 771 A, for example, by first moving a stop plate close to the bristle body, and then using a knife to press the laterally protruding bristles against the stop plate and cut off, thereby cutting off the protruding bristles . This method is especially suitable if the bristles at the edge are bent outward and protrude laterally. Another method is that the two clamping members move relative to each other within the end of the bristle body, thereby clamping the protruding bristles like tweezers. However, it is important that the two clamping members are extremely close to the protruding bristles to join together, otherwise the protruding bristles will not be clamped, but the protruding bristles can only be pushed away by one of the two clamping members and Bend.

Therefore, the purpose of the present invention is to find a brush dressing device and a method for dressing brushes, both of which make manual rework redundant and can remove the protruding bristles from the bristle body through both.

This objective is achieved by a brush trimming device for removing protruding bristles from a bristle body. The bristles of the bristle body are fixed on a bristle carrier and form at least one part of the brush together with the bristle carrier, wherein the bristle body has a free end . The brush dressing device according to the present invention includes at least three parallel, particularly plate-shaped clamping members, which have end edges facing the free ends, wherein the end edges are wedge-shaped in the direction toward the end of the bristle body The upper extension is provided with a driving device which makes the clamping members spaced apart and enables the clamping surfaces of the clamping members to move relative to each other, so as to clamp the protruding bristles between the clamping members. The driving device can also move the clamping members moving relative to each other away from the bristle carrier, so as to pull the protruding bristles from the bristle carrier.

The brush dressing device according to the present invention subdivides the bristle body into many parts, which means that it is divided into at least two sections because of at least three plate-shaped clamping members. This ensures that when the bristles of the entire bristle body are finally moved between the two clamping parts to which they belong and are clamped there, there is almost no bending or no bending at all. Also important is the wedge-shaped end edge, because it ensures that the bristle body is divided into several parts and no bristles stick to the flat front face of the clamping member and bend there. Conversely, the bristles enter the area between the clamping members in parallel or almost parallel, without significant bending. The free ends of the bristle body are determined by the free ends of the bristles of the bristle body.

In the contact area with the protruding bristles, the clamping surface can preferably be aligned straight and parallel to each other. The closing direction is preferably perpendicular to the clamping surface or flat contact area.

Alternatively, the clamping member may have a groove in the contact area that is preferably straight and transverse to the pull-out direction, and then the severely protruding bristles are partially pressed into the groove during its elastic deformation, so that when the protruding When the bristles must be pulled out, they will no longer slip relative to the clamping piece. Therefore, the clamping force can be increased without the risk of breaking the protruding bristles.

Another alternative method provides that between the contact area and the other end, the clamping member has a notch on the clamping surface. This has the advantage that there is no contact between adjacent clamping members in the middle area where the notch exists, and it is always ensured that the protruding bristles are clamped in the contact area. In particular, the force is applied to the plate-shaped clamping element in the middle area.

The wedge shape preferably extends over the entire longitudinal edge of the plate body and can be tapered.

The wedge-shaped end edge may optionally have a height in the direction of the bristle carrier, which height is greater than 2 mm. This is enough to penetrate deep into the body of the bristles and separate them.

The clamping element has a maximum thickness of, for example, at most 2 mm.

In order to more easily produce the brush dressing device according to the present invention, all the clamping members may have the same geometric shape, but at least the same geometric shape in the end edge area.

The bristle carrier always has a front face facing the free end of its bristle body, which protrudes from the bristle carrier. According to a variant of the present invention, the clamping member extends perpendicular to the front end surface, to be precise, perpendicular to the front end surface area. The clamping member is located in the front end surface area and can theoretically extract the protruding parts in the front end surface area. Bristles. The brush dressing device according to the invention can actually also be used for round brushes or brushes with curved bristle carriers. In this case, the front end face is not straight, so that by pulling out the protruding bristles in the area to be processed by the clamping member in a few cycles, it is possible to optimize the bristle body in a few cycles. Then, between cycles, for example, the bristle carrier is rotated (for round brushes) or weitertakten, for example, for curved hair brushes.

The bristle carrier may have elongated bristle areas, such as for example a toothbrush or hairbrush. The clamping members in this case preferably extend in the longitudinal direction of the bristle area, so that relatively few clamping members are sufficient, and at the same time the distance between the clamping members (as long as they are not close to each other) is small . Due to the small spacing between the clamping pieces, the accuracy of clamping the bristles is improved. When the clamping members are close to each other and the free ends of the bristles that extend too far enter the clamping range of the clamping member, the bristles on the edge of the gap between the two clamping members that have not yet abutted each other , Actually only bends a bit.

As mentioned before, in order to pull out the protruding bristles, the clamping member is removed from the bristle carrier after clamping, which naturally means a relative movement between the clamping member and the bristle carrier. Of course, the plate body can also be kept in a static state, while the bristle carrier is moved away from it relative to the clamping member.

There may be a plurality of clamping element groups that perform trimming work in sequence, wherein the orientation of the clamping elements of the first group relative to the bristle carrier to be trimmed is different from that of the clamping elements of the second group. The clamping members of the second group are particularly aligned at right angles to the clamping members of the first group.

In addition, the present invention also relates to a method for removing protruding bristles from the bristle body of a brush, wherein the bristle body has free ends. The method is characterized in that it includes the following steps: At least three parallel, spaced apart clamping members move toward the free end of the bristle body, wherein the clamping member has an end edge facing the free end, the end edge extending in a wedge shape to its end, thereby making the bristle The body is distributed among the at least three clamping members, wherein the clamping member and the bristle carrier are kept at a certain distance, so that only the protruding bristles enter the clamping surface area of the clamping member, The clamping pieces move relative to each other, whereby the protruding bristles are clamped between the clamping surfaces of adjacent clamping pieces, and The clamping member is removed from the bristle carrier, during which the protruding bristles are pulled out from the bristle carrier.

As previously explained with reference to the brush dressing device according to the present invention, the bristle body can have a longitudinal direction with reference to the free end and the clamping member can then be calibrated in the longitudinal direction.

Preferably, the clamping members move toward the bristle body at intervals within the range of the flat surface, which should not be construed as a limitation.

This movement can be either towards the free end, that is to say, the clamping element moves essentially in the longitudinal direction of the bristles towards the bristle body, or laterally into the bristle body in the end region.

The distance between the clamping member and the bristle carrier is selected so that the ends of the bristles that are accurately positioned extend into the edge area of the wedge-shaped end without entering the clamping surface area. This positioning ensures that the clamping element subdivides the bristle body into several parts.

The ends of the bristles of the bristle body are preferably pointed, here either chemically or mechanically.

The number of wedge-shaped end edges and clamping pieces can be matched with the ends of the bristles, so that the ends of the bristles are accurately positioned, that is, the ends of the bristles that are not excessively protruding are not clamped between the end edges. The ends of the bristles can be pulled out by the clamping member. This means that it is actually very easy to clamp the ends of the bristles between the wedge-shaped end edges of adjacent clamping members, but when the clamping member is later removed from the bristle carrier, the accurately seated bristles are removed from the end edges. The area between the bristles slides out without being pulled out of the bristle body.

Optionally, the number of wedge-shaped end edges and clamping members match the bristle ends and the clamping members move into the bristle body so that the accurately seated bristle ends terminate between the end edges. The clamping element thus divides the bristle body into several parts.

It is possible to use so many clamping members related to the width of the bristle body that needs to be processed in one process, so that the bristle body is subdivided into two, three, four, five, or six or more parts, That is, three, four, five, six, seven or more clamping pieces.

Another feature of the present invention is that with the brush dressing device according to the present invention and the method according to the present invention, the geometry of the clamping member does not necessarily match the pattern of the bristle body, which is also called a hole pattern. Through the small width between two adjacent clamping members with a certain distance between each other, it does not matter whether it is a plurality of round bristle bundles or a plurality of elongated bristle regions, which are interlaced with each other Or extend parallel to each other, or other tufting patterns, forming the bristle body.

The device according to the present invention can be used for finishing work on a so-called filling cylinder (Stopftrommel), which further feeds the bristle carrier (weitertakten), or the device according to the present invention can be used as a filling device and the back of the filling cylinder. The dressing equipment is installed in the filling station. Therein, the brush can optionally be held on the same support that also carries the bristle carrier in the filling device.

Another variant provides for trimming work by fixing the bristle carrier to a rotating filling cylinder, for example. Then the filling process is performed at a specific position of the filling cylinder.

After the filling is completed, the filling cylinder then continues to rotate, and then the method according to the invention and the brush dressing device according to the invention work in a new position.

Optionally, of course, the brush can be removed from the filling device or the entire filling station, such as automatically through a gripper or a robot/programmable multi-axis gripping device, or manually. The bristle carrier can be fixed, for example, to a holder, which is located on a chain or in a so-called clamping device, which fixes the bristle carrier in the filling station.

Another alternative is to equip a brush dressing device as a workstation directly behind the filling station.

FIG. 1 illustrates a brush trimming device 10, which is pulled out from the bristle body 16 and protrudes from the bristle body 16 beyond a predetermined tolerance threshold, that is, the bristles 14 that are too protruding to treat a brush that has been completed or is about to be completed. 12 Perform trimming.

The brush 12 is a toothbrush in the described case, which is only an example. Each brush of any type can also be trimmed by the brush trimming device 10. The brush 12 includes a bristle carrier 18 into which a plurality of bristle bundles 19 are inserted and fixed to form a bristle body 16. The bristle body 16 is therefore the sum of all fixed bristles and bristle bundles 19. The bristle carrier may be a part of the brush body (such as a small plate) or the entire brush body. In any case, the bristle carrier will become part of the finished brush.

Either no anchor is used, or an anchor is used to fix the bristle bundle 19 in the bristle carrier 18, as described at the beginning of this article. The fixing method is not decisive for the function of the brush dressing device 10, because the brush dressing device 10 will work if the bristles are fixed to the bristle carrier 18 in any way.

The bristle body 16 has a free end 20 composed of the free ends of all the bristles of the bristle bundle 19. The free ends are those ends that are not fixed in the bristle carrier 18.

The positions of the free ends of the bristles are not always the same, that is, the distance from the so-called front end surface 22 of the bristle carrier 18 to which the bristle bundle 19 is fixed is not equal. Due to the manufacturing process, there is a certain tolerance, and the ends of the bristles are within the tolerance range. The ends of the bristles do not have to lie on a plane or ideally form a plane. Sometimes it is more desirable that the distance between the end and the front end surface 22 is slightly different, so that the end is individually and not as a whole, relatively rigid unit. Rub on the teeth or gums. As a result, individual, more protruding bristles are more likely to penetrate into the tooth gap.

Therefore, there is a certain tolerance range. The end of the bristles should be within the tolerance range, regardless of the shape of the end of the bristle body, regardless of whether the shape is flat, jagged, or other regular or irregular. Desired contour surface.

1 shows the bristles 14, which are clearly outside the tolerance range and protrude relative to the end 20 of the bristle body 16, in particular by more than 1 mm. This unique, overly prominent bristle 14 can make the brush 12 a defective product.

Through the brush trimming device 10, the unique bristles 14 are relaxed and pulled out from the bristle body.

The brush dressing device 10 includes several narrow clamping members 24-34, in particular with a maximum thickness of 1.5 mm. The clamping members have opposing, straight clamping surfaces 36, which are all Move relative to each other. Each of the clamping members 24-34 has an end edge 38 facing the free end 20, and the end edge 38 does not terminate straight at the front end surface, but extends to the end in a wedge shape, especially tapering toward the edge 40.

All clamping members 24-34 preferably have such end edges 38 that are wedge-shaped.

The wedge shape extends over the entire top edge toward the brush 12.

The wedge shape preferably also extends uniformly over the entire longitudinal extent.

The clamping members 24-34 are movably installed perpendicular to the clamping surface 36 thereof, for example using continuous rails or bolts.

Equipped with a drive device having at least one first drive 42 and a second drive 44, wherein the drive 42 can move the clamping members 24-34 at right angles to and away from each other with respect to the clamping surface 36, and the drive 44 can The clamping members 24-34 are preferably parallel to the clamping surface 36 and in the longitudinal direction (direction A) of the bristles of the bristle body 16, and (or) parallel to the front end within the range of the bristle bundle 19 to be trimmed Face 22, moves forward and back in the opposite direction (direction B).

Of course, it is also possible to provide a drive device instead of the drive 44, and the drive device moves in other directions. In any case, the end edge 38 must be able to move to and away from the area of the bristle body 16 that needs to be trimmed.

In the initial position shown in FIG. 1, the clamping members 24-34 are slightly spaced apart, so that a gap 46 is created in the range of the clamping surfaces 36 opposite to each other. Optionally, the gap 46 may be the same size.

In the first step, the brush dressing device with clamping members 24-34 advances relative to the bristle body 16 through the drive 44, for example, through the movement of the clamping members 24-34 or through the bristle carrier 18 toward the clamping members 24-34. Direction of movement. Among them, the end edge 38 enters the bristle body 16, as shown in Figs. 2 and 6. However, the penetration depth is selected so that the ends of the bristles that are accurately seated and thus the ends 20 of the bristle body are always within the range of the end edge 38 between the two adjacent clamping members 24-34. In other words, the clamping members 24-34 subdivide the bristle body 16 into different parts. These different parts do not have to be formed by a single bristle tuft 19, on the contrary, the brush trimming device 10 with clamping members 24-34 can also be determined according to the position of the bristle tuft 19 relative to the clamping members 24-34. Bundle 19 is subdivided into several parts.

However, in any case, the protruding bristles 14 are located between the adjacent clamping surfaces 36 of the two clamping members 24-36, wherein the end regions of the clamping surfaces 36 are in contact with the protruding bristles 12, This is the so-called contact area 39, which starts from the corresponding end of the end edge 38, see FIGS. 1 and 2.

In the next step, as shown in FIGS. 3 and 7, the clamping members 24-34 move relative to each other through the drive 42, that is, perpendicular to the clamping surface 36. The clamping surfaces 36 are then close to each other at least on the opposing contact areas 39 under prestress. The individual bristles can slide transversely across the edge 40 into the adjacent gap between the adjacent end edges 38 during the process of the clamping members 24-34 approaching each other. Since the end edge 38 is gradually reduced, no bristles are bent by being pressed to a flat front face (not present here), and there is no possibility of being clamped between the clamping members 24-34. All the bristles can be basically not affected by the clamping members 24-34, and are basically distributed in a manner of being built-in and fixed in the bristle carrier 18.

After the protruding bristles 14 enter between the clamping surfaces 36, when the clamping members 24-34 are squeezed together, the protruding bristles 14 are clamped on the contact area 39 because the clamping members 24-34 are modularly To move together, that is, the clamping members 24-34 are in planar contact with each other, except for the clamping member that clamps the excessively protruding bristles 14 therebetween.

Next, the displacement movement of the bristle carrier 18 relative to the brush dressing device 10 with reference to FIGS. 4 and 8 is performed, for example, the brush dressing device 10 is moved away by means of the drive 44. As a result, the protruding bristles 14 are loosened and pulled out from the bristle body 16 and the fixing part of the protruding bristles 14. The brush 12, which was still defective before, is thus free of defects.

In the illustrated embodiment, the clamping surface 36 is always flat.

Optionally, the clamping surface 36 may also (as marked with a dashed line in FIG. 3) have one or several grooves 50 extending transversely and parallel to the edge 40. The elastic and protruding bristles 14 are squeezed and then stretched into the groove 50 to better hold the protruding bristles 14 between the clamping members.

Therefore, preferably, the groove 50 relative to the flat area of the clamping member 24 is never sharp, but chamfered, so as not to cut the bristles 14.

An alternative solution provides that in the middle area between the contact area 39 and the other end 51 (see the area in FIG. 2), the clamping member 24 has a notch 53 in the clamping surface 36, as shown in FIGS. 2 and As shown in 7. The plate-shaped clamping members 24-34 are therefore slightly thinner in the middle area. This has the advantage that in the middle area where the recess 53 is present, there is no contact between adjacent clamping members, and it is always ensured that the protruding bristles are clamped in the contact area 39. In particular, the force F is exerted on the plate-shaped clamping members 24-34 in the middle area.

Preferably, the contact area 39 and the end 51 can be respectively flat and optionally can also be co-located on the same plane, which is not limited to the illustrated embodiment, but is universally applicable.

The wedge-shaped end edge 38 preferably has a height h (see FIG. 8), which is between 1.5 mm and 3 mm, preferably greater than 2 mm. This covers all tolerances within the range of the ends of the bristles that are accurately placed.

Of course, the excessively protruding bristles 14 can also be removed through the brush trimming device 10. The bristles 14 are built in, for example, the bristle body 16. Rotary extension.

In the jagged bristle body 16 in the side view, the clamping members 24-34 naturally have an edge 40 and a terminal edge 38 that reproduces the desired saw-tooth geometry.

If the brush is, for example, a round brush or other hairbrush with a convex, cylindrical front face 22, the finishing work is carried out in multiple steps. The clamping members 24-34 move relative to each other to process the cylindrical part of the toothbrush and pull out the bristles 14 protruding in this area, and then the brush dressing device is reopened and the brush is rotated so that the adjacent parts can be trimmed.

During the rotation, it is not necessary to remove the brush trimming device 10 from the opposite side of the brush carrier 18, because there is no risk of passing through the gradually tapered end edge 38 of the bristles that are gently swept when the bristle carrier 18 rotates. The bristles 14 that are outside the range of the brush dressing device 10 or are too protruding cannot be clamped between the clamping surfaces 36.

As for FIG. 7, it is emphasized that the clamping members 24-34 that abut each other here have a total width, which is consistent with the total width of the bristle body 16. However, it must be noted that the outer clamping members 24 and 34 respectively have some bristles located on the outside due to the wedge shape in the form of isosceles triangles, and the bristles cannot be clamped. In order to also be able to clamp the bristles located on the extreme outside (on the left and right in FIG. 7) and pull out the protruding bristles present there, the brush dressing device can be reprocessed, for example, in two cycles. In the first cycle, the brush dressing device moved slightly to the right relative to the position in Fig. 7 and slightly to the left in the second cycle afterwards, so that even the extremely external bristles can always be located between the clamping members 24-34. between.

If it is not possible to extract all the protruding bristles 12 in one process, the method can be performed several times in succession, or, in order to maintain a high frequency, the downstream workstation can be equipped with a second set of clamping pieces 24-34 (second brush Dressing equipment 10), this group of clamping parts continue to perform dressing work. If, relative to the bristle carrier, the clamping members 24-34 abutting against each other have a different position than in the previous dressing device 10, this position is as illustrated in FIG. 9, which is advantageous. Optionally, the clamping piece of the later dressing device 10 may be oriented obliquely with respect to the clamping piece of the first dressing device 10, for example, it may also be at right angles (see the two groups of dressing devices 10 in FIG. 9, The two sets of dressing devices 10 respectively have the previously described clamping members 24-34). In addition, it can be provided, for example, that the wedge-shaped end edge 38 does not extend symmetrically with respect to an imaginary center line in cross section (equilateral triangle) as in the variant described, but at least for the extremely outer clamping parts 24 and 34 , The flat surface 36 (in the outer clamping members 24, 34, the flat surface 36 directed outwards respectively) extends to the sharp edge 40, and from the sharp edge then the inclined surface extends toward the opposite flat surface 36.

In order to easily loosen the clamping members 24-34 from each other, for example, the extension 70 can be formed or fixed on the clamping member (see FIG. 8), and the extensions are slightly inclined so as to be clamped directly adjacent The elastic elements 72 are arranged between the extensions of the members 24-34, which can be squeezed together to the point where the clamping members 36 can abut against each other. However, during the return stroke of the drive 42, these elastic elements The clamping members 24-34 are triggered to separate and move automatically. Alternatively, the pair of clamping members protruding laterally and close to each other may themselves have leaf spring-type extensions 70, and the extensions 70 may abut against each other. Therefore, it is not necessary to provide additional elastic elements between the extensions.

In the illustrated embodiment, before the clamping members 24-34 move relative to each other, as described, the clamping members 24-34 move substantially perpendicular to the front end surface 22 in the region of the bristle body being trimmed. During this movement in the longitudinal direction A, the bristles of the bristle body are squeezed apart from each other. If the brush trimming device 10 is displaced laterally from a position seen in FIG. 2, not perpendicular to the front end surface 22, but moves parallel to the front end surface in the direction B, the same effect can be achieved. For example, the clamping members 24-34 move further to the right and rearward toward the rear end of the bristle carrier 18 in the initial position with reference to FIG. 2. The clamping members 24-34 then move forward and in the process divide the bristle body 16 or bristle bundle 19 into several parts, until the position in FIG. 3 is reached.

Of course, any other feeding direction or feeding movement between the brush dressing device 10 and the bristle body 16 can also be realized.

FIG. 9 illustrates a brush production device with a roller 60 rotating around the X axis, the roller 60 having several clamping devices 62 for the bristle carrier 18 on its circumference. At a position of the drum 60, here at the 3 o'clock position, that is to say on the right, the bristle carrier 18 is filled. This filling method is merely illustrated by way of example. In fact, with the aid of a traditional filling device 64, the filling device 64 uses a movable tongue to feed the bristle bundle 19 and anchors into the corresponding openings of the bristle carrier 18 and transfer the bristle bundle 19 together. fold. After all the openings in the bristle carrier 18 are filled, the drum 60 continues to rotate in the direction of the arrow. On the other side as far as the filling station is concerned, here at the 9 o'clock position, the filled brushes are trimmed with the aid of the brush trimming device 10.

Optionally, another set of clamping members can be prepared, the orientation of the clamping members relative to the brush carrier 18 is different from the orientation of the clamping members 24-34 illustrated at the 9 o'clock position in the figure. The other set of clamping pieces is shown here at 12 o'clock. Different from the first group of clamping members, the other group of clamping members, for example, is at a 90° angle with the bristle carrier 18 to be processed, so that the interface between the clamping members 24-34 that are in contact with each other faces the bristles The body 16 extends differently.

The exchange is then continued, the trimmed brush is taken out and an unfilled brush carrier 18 is put on again.

10: Brush trimming equipment 12: Brush 14: bristles 16: bristle body 18: bristle carrier 19: bristle bunch 20: free end 22: Front face 24: Clamping parts 26: Clamping parts 28: Clamping parts 30: Clamping parts 32: Clamping parts 34: Clamping parts 36: Straight clamping surface 38: End edge 39: contact area 40: Edge 42: drive 44: second drive 46: Clearance 50: Groove 51: end 53: Notch 60: roller 62: Clamping device 64: filling device 70: Extension 72: elastic element A: Vertical B: The direction of the front face F: force h: height X: axis

Other features and advantages of the present invention can be learned from the following description and from the drawings mentioned. In the schema:

-Figure 1 is a perspective side view of the brush trimming device according to the present invention in an open state,

-Figure 2 is the brush dressing device according to Figure 1 in a feed state, in which the dressing device receives the bristle body,

-Figure 3 is the brush dressing device according to Figure 1 in a closed (ie clamped) state,

-Figure 4 is the brush trimming device according to Figure 1 after pulling out the over-protruding bristles,

-Figure 5 is a front view of the brush dressing device in the position shown in Figure 1,

-Figure 6 is a front view of the brush dressing device in the position shown in Figure 2,

-Figure 7 is a front view of the brush dressing device in the position shown in Figure 3,

-Figure 8 is a front view of the brush dressing device in the position shown in Figure 4, and

-Figure 9 is a combined brush filling device with a brush dressing device according to the present invention.

Domestic deposit information (please note in the order of deposit institution, date and number) without Foreign hosting information (please note in the order of hosting country, institution, date, and number) without

10: Brush trimming equipment

12: Brush

16: bristle body

18: bristle carrier

24: Clamping parts

36: Straight clamping surface

38: End edge

39: contact area

40: Edge

42: drive

44: second drive

51: end

53: Notch

Claims (18)

A brush trimming device for removing protruding bristles from a bristle body (16), wherein the bristles are fixed on a bristle carrier (18) and form at least one part of a brush (12) with the bristle carrier, wherein The bristle body (16) has a free end (20), which is characterized by at least three parallel clamping members (24-34) and a driving device. The at least three clamping members (24-34) have a Toward the end edge (38) of the free end (20), where the end edge (38) extends wedge-shaped in cross section, the driving device can space the clamping members (24-34) from each other and make the The clamping members (24-34) move relative to each other with the clamping surfaces (36) facing each other, so as to clamp the protruding bristles (14) between the clamping surfaces (36), wherein the driving device can also make The clamping members (24-34) moving relative to each other are moved away from the bristle carrier (18), so as to pull out the protruding bristles from the bristle carrier (18). The brush dressing device according to claim 1, wherein the clamping members (24-34) are straight and parallel to each other in the region of the clamping surfaces (36). The brush dressing device according to claim 1, wherein the clamping members (24-34) have grooves (50) extending transversely to the extraction direction in the region of the clamping surfaces (36). The brush trimming device according to claim 1 or 2, wherein the wedge-shaped end edge (38) has a height (h) in the direction of the bristle carrier (18), and the height (h) is greater than 1.5 mm, preferably The ground is between 1.5mm and 3mm. The brush dressing device according to claim 1 or 2, wherein all the clamping members (24-34) have the same geometric shape at least in the region of the end edge (38). The brush dressing device according to claim 1 or 2, wherein the bristle carrier (18) has a front end surface (22) facing the free end (20), and the clamping members (24-34) are perpendicular to the The front face (22) extends. The brush dressing device according to claim 1 or 2, wherein the bristle carrier (18) has a long and narrow bristle area and the clamping members (24-34) extend in the longitudinal direction of the bristle area. The brush dressing device according to claim 1 or 2, characterized by several groups of clamping pieces (24-34) for performing dressing work in sequence, wherein the clamping pieces (24-34) of the first group are opposite to The orientation of a bristle carrier (18) to be trimmed is different from the clamping members of the second group. The brush dressing device according to claim 8, wherein the clamping pieces (24-34) of the first group are aligned at right angles with respect to the clamping pieces (24-34) of the second group. A method for removing protruding bristles (14) from a bristle body (16) of a brush (12), wherein the bristle body (16) has a free end (20), which is characterized by the following steps: At least three parallel and spaced clamping members (24-34) have an end edge (38) facing the free end (20) of the bristle body (16), the end edge (38) extending in a wedge shape To the end of the end edge (38), the clamping members move to the free end (20) of the bristle bundle (16), so that the bristle body (16) is in the at least three clamping members (24-34) ) Are distributed between the clamping members (24-34) and the bristle carrier (18) so that only the protruding bristles (14) enter the clamping surfaces of the clamping members (24-34) area, The clamping members (24-34) move relative to each other, whereby the protruding bristles (14) are clamped between the clamping surfaces (36), and the clamps are removed from the bristle carrier (18) And pull out the protruding bristles (14) from the bristle carrier (18) in the meantime. The method according to claim 10, wherein the bristle body (16) has a longitudinal direction with reference to the free end of the bristle body (16) and the clamping members (24-34) are in the longitudinal direction alignment. The method according to claim 10 or 11, wherein the clamping members (24-34) face each other at a distance from each other in the region of the clamping surfaces (36) of the clamping members (24-34) The bristle body (16) moves. The method according to claim 10 or 11, wherein the clamping members (24-34) move parallel to the area where the front end surface (22) of the bristle carrier (18) is brushed, and the bristle body ( 16) In the area. The method according to claim 10 or 11, wherein the clamping members (24-34) move into the bristle body (16), so that the ends of the bristles that are accurately positioned extend into the wedge-shaped end edges (38) Area without reaching the clamping surface (36). The method according to claim 10 or 11, wherein the ends of the bristles are pointed. The method according to claim 10 or 11, wherein the number of the wedge-shaped end edges (38) and the clamping members (24-34) matches the ends of the bristles and the clamping members move into the bristles Body, so that the ends of the bristles that are exactly in place terminate between the end edges (38). The method according to claim 10 or 11, wherein another set of clamping pieces (24-34) extending parallel to each other is provided, and the clamping pieces (24-34) of the group are relative to the bristle carrier to be trimmed (18) Perform different orientations. The method according to claim 10 or 11, wherein the other set of clamping pieces (24-34) extending parallel to each other is oriented perpendicularly to the set of clamping pieces (24-34) that first performs the trimming work.

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