EP4203749B1 - Device for producing bristle products - Google Patents

Description

The invention relates to a device for the production of bristle goods, in particular brushes or brooms, with a stuffing tool for stuffing bundles of bristles into a bristle holder that is kept ready and a bristle displacer for displacing already stuffed bundles of bristles from a stuffing area of the stuffing tool.

Such devices are already known from practice and also from the prior art in various embodiments - for example from the publication GB 868 010 A and the publication DE 10 2004 011 447 A1 .

In the devices known from these two publications it is provided that bristle displacers in the form of plates or sheets are acted upon directly by the stuffing tool of the respective device during the stuffing process and are thereby moved.

Basically, these devices work well. However, as the stuffing speed increases, i.e. the number of bristle bundles stuffed per unit of time, the previously known concepts reach their limits.

The object of the invention is therefore to provide a device of the type mentioned at the outset, which enables the production of bristle products even at higher tamping speeds.

To solve this problem, a device of the type mentioned is proposed, which has the means and features of the independent device aimed at such a device claim. In particular, in order to solve the problem in a device of the type mentioned at the outset, it is proposed that the stuffing tool be connected and driven via a tool coupling gear and the bristle displacer via a displacer coupling gear with a common drive shaft of the device.

In this way, a kinematic coupling can be established between the stuffing tool and the bristle displacer without having to apply the stuffing tool directly to the bristle displacer, as was previously known from practice and the prior art.

Return springs, which move the bristle displacers of the previously known devices back to their starting position and which can represent a limiting factor in increasing the tamping speed, can be dispensed with in the device according to the invention.

The coupling between the common drive shaft and the stuffing tool and the bristle displacer can be designed such that the reset of the bristle displacer is positively coupled to the reset of the stuffing tool from a stuffing position.

In this way, an increase in the tamping speed leads to a corresponding increase in the power of the bristle displacer.

In one embodiment of the device it is provided that the tool coupling gear includes a tool eccentric and the displacement coupling gear includes a displacement eccentric. The tool eccentric and the displacement eccentric can be arranged on the common drive shaft.

With the help of the two eccentrics, the rotational movement of the common drive shaft can be converted into a corresponding movement of the stuffing tool and the bristle displacer.

In a preferred embodiment of the device, the bristle displacer can be pivoted about an axis of rotation to carry out a displacement movement. The axis of rotation can be aligned parallel or at right angles or transversely to the direction of movement of the stuffing tool when stuffing bristles.

If the axis of rotation of the bristle displacer is aligned transversely or at right angles to the direction of movement of the stuffing tool, the bristle displacer can be moved in an arcuate or circular arc-shaped displacement movement. If the axis of rotation of the bristle displacer is aligned parallel to the direction of movement of the stuffing tool, the displacement movement of the bristle displacer can be fan-shaped.

The device can have a switching device for changing a displacement direction and/or a displacement path of the bristle displacer.

In this way, it is possible to adjust the displacement direction in which the bristle displacer is advanced to displace already stuffed bundles of bristles, and/or the displacement path of the bristle displacer, which is covered by the bristle displacer. This favors the production of bristle products with comparatively complex bristle fields, the bristle bundles of which are to be stuffed in a specific order and which require the bristle displacer to move in different directions and/or with different travel paths.

In an embodiment of the device of particular importance, the switching device comprises a guide carriage and a linear guide along which the guide carriage is displaceably mounted. An angular position of the linear guide can be changed in order to adjust the displacement direction and/or the displacement path of the bristle displacer.

The guide carriage and the linear guide can be components of the previously mentioned displacer coupling gear, via which the bristle displacer is connected to the common drive shaft of the device.

As already indicated previously, a displacement direction of the bristle displacer and/or a displacement path of the bristle displacer can be dependent on the angular position of the linear guide.

The guide carriage can be connected to the bristle displacer via at least one lever, in particular via at least one articulated lever. In this way, the movement of the guide carriage can be transferred to the bristle displacer. Depending on the orientation and angular position of the linear guide along which the guide carriage can be moved, the displacement path and/or the displacement direction of the bristle displacer can be transferred to the bristle displacer via the lever.

The guide carriage can in turn be connected to the common drive shaft via a transmission means of the displacement coupling gear, for example via a transmission lever and/or the displacement eccentric. In this way it is possible to transfer the movement of the drive shaft to the guide carriage.

A transmission means of the displacement coupling gear and a transmission means of the tool coupling transmission can be arranged, in particular mounted, on a common axis. The common axis can be aligned transversely or parallel to the common drive shaft. Levers can serve as transmission means and can interact with the respective eccentric in order to convert the rotational movement of the common drive shaft into a movement of the stuffing tool and the bristle displacer.

To transmit a drive movement to the stuffing tool, the tool coupling gear can have a link guide. The link guide can be arranged, for example, on the stuffing tool. The previously mentioned transmission means can be indirectly connected to the stuffing tool via the link guide.

The tool eccentric and the displacement eccentric can be designed and arranged on the common drive shaft in such a way that the bristle displacer is arranged in the displacement position while the stuffing tool is in the stuffing position. In this way, collisions between the stuffing tool and the bristle displacer can be avoided. It is also possible for the tool eccentric and the displacement eccentric to be designed and arranged on the common drive shaft in such a way that the bristle displacer has already assumed its displacement position before the stuffing tool has reached its stuffing position. In this way, collisions between the stuffing tool and the bristle displacer can be avoided particularly safely.

In one embodiment of the device, the bristle displacer has a displacer ring into which the stuffing tool is immersed in the stuffing position. A collision In this way, gaps between the bristle displacer and the stuffing tool can be effectively avoided.

Furthermore, with the help of a displacement ring, a sufficiently large area of already stuffed bristle bundles can be kept free in a simple and gentle manner for the bristle bundles. This means that further bristle bundles can be stuffed without damaging adjacent bristle bundles or accidentally stuffing adjacent bristle bundles.

It can be advantageous for the interaction between the stuffing tool and the bristle displacer if an outer peripheral surface of a tool tip of the stuffing tool is designed to correspond to an inner peripheral surface of the displacer ring. In this way, the stuffing tool can rest with its tool tip on the inner circumferential surface of the displacement ring.

In one embodiment of the device, the bristle displacer can have at least one deflection means. A displacement tip, for example, can be provided as at least one deflection means. The at least one deflection means of the bristle displacer can be used to deflect bundles of bristles that have already been stuffed into a bristle carrier laterally to a direction of movement of the bristle displacer. Such lateral displacement can be particularly gentle on the already clogged bristle bundles. A displacer tip can have laterally sloping displacement surfaces, with which bundles of bristles that have already been stuffed can be reliably and gently displaced laterally.

In one embodiment of this bristle displacer, a longitudinal axis of the at least one deflection means can be transverse or perpendicular to the direction of movement of the bristle displacer be aligned. In the case of a bristle displacer that has a displacer ring, the at least one deflection means can be arranged on an outside of the displacer ring. In a preferred embodiment of a bristle displacer which has a displacer ring, a deflection means in the form of a displacer tip is arranged on two mutually facing outer sides of the displacer ring.

The device can have a motor for driving the common drive shaft. Here, an output shaft of the motor can be connected to the drive shaft via a drive belt.

In order to be able to align a bristle carrier in the position required for stuffing its receiving holes for bristle bundles relative to the stuffing tool, it can be advantageous if the device has a holder for receiving at least one bristle carrier, which can be adjusted in at least two different axes relative to the stuffing tool is.

Furthermore, the device can have a magazine in which bristle filaments are stored. The bristle filaments can be removed from the magazine into bundles of bristles using a bundle separator in the device and fed to the stuffing tool. The device can have an anchor feed device with which anchors can be fed to the stuffing tool of the device for fastening bundles of bristles in a bristle carrier.

Figuren 1 bis 8

Ansichten einer Vorrichtung zur Herstellung von Borstenwaren zur Veranschaulichung der Funktionsweise ihres Stopfwerkzeugs sowie ihres Borstenverdrängers beim Bestopfen eines unteren Teilfeldes eines mit Borstenbündeln zu bestopfenden Borstenträgers, wobei der Borstenverdränger in einer von unten nach oben ausgeführten Verdrängerbewegung zugestellt wird,

Figuren 9 bis 17

Darstellungen der in den Figuren 1 bis 8 gezeigten Vorrichtung zur Veranschaulichung der Funktionsweise der Vorrichtung beim Bestopfen eines oberen Teilfeldes eines zu bestopfenden Borstenträgers, wobei insbesondere Figur 17 verdeutlicht, dass der Borstenverdränger bereits seine Verdrängerposition erreicht hat, bevor das Stopfwerkzeug seine Stopfposition erreicht,

Figur 18

eine perspektivische Darstellung eines Borstenverdrängers zur Veranschaulichung eines ersten Bewegungsmusters, bei dem der Borstenverdränger um eine Drehachse geschwenkt wird, die parallel zur Bewegungsrichtung des Stopfwerkzeugs beim Stopfvorgang ausgerichtet ist,

Figur 19

eine zweite schematisierte Darstellung eines Borstenverdrängers zur Veranschaulichung eines zweiten Bewegungsmusters, bei dem eine Drehachse, um die der Borstenverdränger schwenkbar ist, quer oder rechtwinklig zur Bewegungsrichtung des Stopfwerkzeugs beim Einstopfen von Borstenbündeln ausgerichtet ist, sowie

Figuren 20 bis 24

Ansichten einer Bürste in unterschiedlichen Stadien ihrer Bearbeitung, wobei die Figuren 21 und 23 verdrängte Borstenbündel zeigen, um die Arbeitsweise des aus unterschiedlichen Richtungen zustellbaren Borstenverdrängers zu veranschaulichen.

The invention is described in more detail below using an exemplary embodiment, but is not limited to this exemplary embodiment. Further exemplary embodiments of the invention result from combining the features of one or more features Protection claims with one another and/or in combination of individual or several features of the exemplary embodiment explained below. Show it:

Figures 1 to 8

Views of a device for the production of bristle goods to illustrate the functionality of its stuffing tool and its bristle displacer when stuffing a lower subfield of a bristle carrier to be stuffed with bundles of bristles, the bristle displacer being delivered in a displacement movement carried out from bottom to top,

Figures 9 to 17

Representations in the Figures 1 to 8 shown device to illustrate the functionality of the device when stuffing an upper subfield of a bristle carrier to be stuffed, in particular Figure 17 clarifies that the bristle displacer has already reached its displacement position before the stuffing tool reaches its stuffing position,

Figure 18

a perspective view of a bristle displacer to illustrate a first movement pattern in which the bristle displacer is pivoted about an axis of rotation which is aligned parallel to the direction of movement of the stuffing tool during the stuffing process,

Figure 19

a second schematic representation of a bristle displacer to illustrate a second movement pattern in which a Axis of rotation, about which the bristle displacer can be pivoted, is aligned transversely or at right angles to the direction of movement of the stuffing tool when stuffing bundles of bristles, as well as

Figures 20 to 24

Views of a brush in different stages of its processing, with the Figures 21 and 23 Show displaced bristle bundles to illustrate the operation of the bristle displacer, which can be delivered from different directions.

All figures show a device for producing bristle products 2, designated as a whole by 1. The bristle products 2, which can be produced on the device 1 shown in the figures, are brushes, in particular toothbrushes.

The device 1 has a stuffing tool 3 for stuffing bristle bundles 4 into a bristle carrier 5 of a bristle product to be produced and a bristle displacer 6 for displacing already stuffed bristle bundles 4 from a stuffing area of the stuffing tool 3.

The device 1 is characterized in that the stuffing tool 3 is connected to a common drive shaft 9 of the device 1 via a tool coupling gear 7 and the bristle displacer 6 is connected to a common drive shaft 9 of the device 1 via a displacement coupling gear 8 and is driven together in a positively coupled manner. This means that the movements of the stuffing tool 3 into a stuffing position and of the bristle displacer 6 into a displacement position as well as the return movements back to the respective starting position are coupled to one another. Whenever the stuffing tool 3 is in a specific position in its movement cycle, the bristle displacer 6 has assumed a specific position in its movement cycle.

The tool coupling gear 7 includes a tool eccentric 10. The displacement coupling gear 8 comprises a displacement eccentric 11. With the help of the tool eccentric 10 and the displacement eccentric 11, a rotational movement of the drive shaft 9 can be transmitted indirectly to the stuffing tool 3 and the bristle displacer 6. For this purpose, the tool eccentric 10 and the displacement eccentric 11 are arranged on the common drive shaft 9.

The bristle displacer 6 can be pivoted about an axis of rotation 12 to carry out a displacement movement. According to the Figures 18 and 19 Depending on the embodiment of the device 1, the bristle displacer 6 can be pivotable about an axis of rotation 12, which is aligned parallel to the direction of movement of the stuffing tool 3 (see Figure 18 ) or is aligned transversely or at right angles to the direction of movement of the stuffing tool 3 (see Figure 19 ).

Depending on the orientation of the axis of rotation 12, the bristle displacer 6 then follows a fan-shaped displacement movement, as can be seen from the three different positions of a bristle displacer 6 in Figure 18 can be recognized. Or the bristle displacer 6 is pivoted about an axis of rotation 12 aligned transversely or at right angles to the direction of movement of the stuffing tool 3, which then leads to an arcuate or circular arc-shaped displacement movement, which in Figure 19 is shown.

At the in Figure 18 shown embodiment of a bristle displacer 6 can also be said that Axis of rotation 12 of the bristle displacer 6 is aligned at right angles or transversely to a longitudinal extent of the bristle displacer 6.

At the in Figure 19 In the exemplary embodiment of a bristle displacer 6 shown, it can also be said that the axis of rotation 12 is aligned in the direction of a longitudinal extent or longitudinal axis of the bristle displacer 6.

The ones in the Figures 1 to 17 Device 1 shown comprises a switching device 13 for changing a displacement direction and/or a displacement path of the bristle displacer. The switching device 13 makes it possible to deliver the bristle displacer 6 into the stuffing area of the stuffing tool 3 from different directions.

According to the Figures 1 to 8 The bristle displacer 6 is delivered from bottom to top, which is made possible by a corresponding position of the switching device 13. A lower subfield of a bristle field of the bristle carrier 5 can be stuffed with bristle bundles 4.

According to the Figures 9 to 17 The bristle displacer 6 is delivered from top to bottom to displace already stuffed bristle bundles, which is also effected by a corresponding switching position of the switching device 13. This favors the stuffing of an upper subfield of the bristle carrier 5 with bundles of bristles 4.

The switching device 13 of the device 1 shown in the figures comprises a guide carriage 14 and a linear guide 15. The guide carriage 14 can be displaced along the linear guide 15, with a movement of the guide carriage 14 being converted into a displacement movement of the bristle displacer 6.

An angular position of the linear guide 15, along which the guide carriage 14 is moved, can be changed. This makes a comparison of the Figures 1 to 8 with the Figures 9 to 14 and 17 clearly.

To change the angular position of the linear guide 15, the switching device 13 has an actuator 16 with which the linear guide 15 can be pivoted.

The displacement direction of the bristle displacer 6 is just as dependent on the angular position of the linear guide 15 as a displacement path that is covered by the bristle displacer 6.

The guide carriage 14 is connected to the bristle displacer 6 via at least one lever, namely at least one articulated lever 17. A movement of the guide carriage 14 can be converted into a movement of the bristle displacer 6 via the articulated lever 17.

The guide carriage 14 is in turn connected to the common drive shaft 9 via a transmission means 18 of the displacement coupling gear 8, namely via a transmission lever, and the previously mentioned displacement eccentric 11.

The transmission means 18 of the displacement coupling gear 8 and a transmission means 19 of the tool coupling gear 7 are arranged on a common axis 20 and are rotatably mounted. Levers are used as transmission means 18 and 19.

The tool coupling gear 7 further includes a link guide 21, which is arranged on the stuffing tool 3 and serves to transmit a drive movement to the stuffing tool 3.

The tool eccentric 10 and the displacement eccentric 11 are designed and arranged on the common drive shaft 9 in such a way that the bristle displacer 6 is arranged in the displacement position before and even while the stuffing tool 6 is in the stuffing position. This is particularly illustrated by the representation of the device 1 according to Figure 17 .

The bristle displacer 6 has a displacer ring 22. The tamping tool 3 can dip into this displacement ring 22 in the tamping position. This is illustrated, for example, by: Figures 6 , 12 and 17 .

These figures also clearly show that an outer peripheral surface 23 of a tool tip 24 of the stuffing tool 3 is designed to correspond to an inner peripheral surface 25 of the displacer ring 22 of the bristle displacer 6.

The bristle displacer 6 also has two deflection means 26, which are designed as displacer tips with laterally inclined displacer surfaces. With the help of the deflection means 26 of the bristle displacer 6, already stuffed bristle bundles 4 and their bristles can be deflected laterally to a direction of movement of the bristle displacer 6. In this way, the bristle bundles 4 can be brought out of the stuffing area of the stuffing tool 3 particularly gently. Longitudinal axes of the deflection means 26 are aligned in the direction of movement of the bristle displacer 6.

The two deflection means 26 are arranged on an outside of the displacer ring 22 of the bristle displacer 6.

The device 1 comprises a motor 27 for driving the common drive shaft, the output shaft of which is connected to the drive shaft 9 via a drive belt 28.

The device 1 further comprises a holder 29 for receiving a bristle carrier 5. The holder 29 can be adjusted in at least two different axes relative to the stuffing tool 3 in order to be able to position the bristle carrier 5 relative to the stuffing tool 3 for stuffing its receiving holes with bristle bundles 4 .

The device 1 also has a magazine 30 in which bristle filaments are stored. The bristle filaments can be removed from the magazine 30 into bundles of bristles 4 using a bundle separator 31 of the device 1 and fed to the stuffing tool 3. The device 1 also has an anchor feed device 32, with which anchors can be fed to the stuffing tool 3 for fastening the bristle bundles 4 in the bristle carrier 5.

The invention is concerned with improvements in the technical field of producing bristle products. For this purpose, a device 1 is proposed which has a stuffing tool 3 for stuffing bundles of bristles 4 into a bristle carrier 5 that is kept ready and a bristle displacer 6 for displacing already stuffed bundles of bristles from a stuffing area of the stuffing tool 3. The stuffing tool 3 and the bristle displacer 6 are each connected to a common drive shaft 9 of the device via their own coupling gear 7 or 8 and are driven by it.

Reference symbol list

1

Device for producing bristle products

2

bristleware

3

darning tool

4

Bristle bundles

5

Bristle carriers

6

Bristle displacer

7

Tool coupling gear

8th

Displacement coupling gear

9

drive shaft

10

Tool eccentric

11

displacement eccentric

12

Axis of rotation of 6

13

Switching device

14

Guide carriage

15

Linear guide

16

Actuator

17

Lever, articulated lever

18

Transmission means of 8

19

Transmission means of 7

20

axis

21

Scenery tour

22

Displacer ring

23

Outer circumferential area of 24

24

Tool tip

25

Inner circumferential area of 22

26

deflection means

27

engine

28

drive belt

29

holder

30

magazine

31

Bundle divider

32

Anchor feeder

Claims (17)

1. Apparatus (1) for producing brushware (2), in particular brushes or brooms, having a tufting tool (3) for tufting bristle bundles (4) into a provided bristle carrier (5), and having a bristle displacer (6) for displacing already tufted bristle bundles (4) from a tufting region of the tufting tool (3), characterized in that the tufting tool (3), via a tool coupling gear mechanism (7), and the bristle displacer (6), via a displacer coupling gear mechanism (8), are connected to and driven by a common drive shaft (9) of the apparatus (1) .
2. Apparatus (1) according to Claim 1, wherein the tool coupling gear mechanism (7) comprises a tool eccentric (10) and the displacer coupling gear mechanism (8) comprises a displacer eccentric (11).
3. Apparatus (1) according to Claim 1 or 2, wherein the tool eccentric (10) and the displacer eccentric (11) are arranged on the common drive shaft (9).
4. Apparatus (1) according to one of the preceding claims, wherein, for performing a displacer movement, the bristle displacer (6) is pivotable about an axis of rotation (12), in particular wherein the axis of rotation (12) is oriented parallel or at a right angle or transversely to the movement direction of the tufting tool (3) .
5. Apparatus (1) according to one of the preceding claims, wherein the apparatus (1) has a switching device (13) for changing a displacer direction and/or a displacer travel of the bristle displacer (6).
6. Apparatus (1) according to the preceding claim, wherein the switching device (13) comprises a guide carriage (14) and a linear guide (15) along which the guide carriage (14) is displaceably mounted, wherein an angular position of the linear guide (15) is changeable.
7. Apparatus (1) according to either of the two preceding claims, wherein the switching device (13) has an actuating drive (16) for changing the angular position of the linear guide (15).
8. Apparatus (1) according to one of the preceding claims, wherein a displacer direction of the bristle displacer (6) and/or a displacer travel of the bristle displacer (6) are/is dependent on an angular position of the linear guide (15).
9. Apparatus (1) according to one of the preceding claims, wherein the guide carriage (14) is connected via at least one lever, in particular via at least one articulated lever (17), to the bristle displacer (6).
10. Apparatus (1) according to one of the preceding claims, wherein the guide carriage (15) is connected via a transmission means (18) of the displacer coupling gear mechanism (8), in particular via a transmission lever, and/or via the displacer eccentric (11), to the common drive shaft (9).
11. Apparatus (1) according to one of the preceding claims, wherein a or the transmission means (18) of the displacer coupling gear mechanism (8) and a transmission means (19) of the tool coupling gear mechanism (7) are arranged, in particular mounted, on a common spindle (20) .
12. Apparatus (1) according to one of the preceding claims, wherein the tool coupling gear mechanism (7) has a slotted guide (21) for transmission of a drive movement to the tufting tool (3).
13. Apparatus (1) according to one of the preceding claims, wherein the tool eccentric (10) and the displacer eccentric (11) are configured, and arranged on the common drive shaft (9), in such a way that the bristle displacer (6) is arranged in the displacer position while the tufting tool (3) is in the tufting position.
14. Apparatus (1) according to one of the preceding claims, wherein the bristle displacer (6) has a displacer ring (22) into which the tufting tool (3) projects in the tufting position, in particular wherein an outer circumferential surface (23) of a tool tip (24) of the tufting tool (3) is formed so as to correspond to an inner circumferential surface (25) of the displacer ring (22) .
15. Apparatus (1) according to one of the preceding claims, wherein the bristle displacer (6) has at least one deflection means (26), in particular at least one displacer tip, by way of which bristle bundles (4) are able to be deflected laterally with respect to a movement direction of the bristle displacer (6).
16. Apparatus (1) according to one of the preceding claims, wherein the apparatus (1) has a motor (27) for driving the common drive shaft (9), in particular wherein an output shaft of the motor (27) is connected via a drive belt (28) to the drive shaft (9).
17. Apparatus (1) according to one of the preceding claims, wherein the apparatus (1) has a holder (29) for receiving at least one bristle carrier (5), which holder is adjustable relative to the tufting tool (3) in at least two different axes.

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