Ferrule tool tip, guide slide therefor, and brush packing apparatus

Abstract

A brush filling device has a ferrule tool tip having a guide rail for an anchor forming a wire ferrule (80), the anchor moving in the guide rail and plastically deforming therein, wherein the guide rail terminates at a front end (68) to be placed on a brush body portion (10) to be filled, and has a rear section (72) away from the end (68) and a section (70) near the end (68), characterized in that at least one rotatably mounted guide roller (76) is provided, the guide roller extending laterally into the guide rail (38) as a narrowing portion and plastically deforming the wire ferrule (80). Furthermore, a brush filling device having a ferrule tool tip is proposed.

Description

Technical Field

[0001] The present invention relates to a ferrule tool tip of a brush filling device having a guide rail for an anchor configured as a wire ferrule, the anchor moving in the guide rail and plastically deforming therein, wherein the guide rail terminates at a front end to be placed on a brush body portion to be filled, and has a rear section away from the end and a section near the end. Background Technology

[0002] A brush-filling device accommodates one or more bristles, or, in the case of multiple bristles, a bristle bundle, and fills the bristle bundle into an opening in a bristle carrier. If the bristles or bristle bundle are secured in the brush body by means of an anchor, the anchor may be a wire loop. The wire loop is introduced into a guide rail at the tip of a ferrule tool and subsequently has a U-shaped configuration with an end open toward the brush body. The bristle bundle or individual bristles and the U-shaped wire loop are, for example, gathered in the tip of the ferrule tool, with the bundle or individual bristles located within the U-shaped wire loop. A filling spring moves the wire loop along the guide rail with the bristles or bristle bundle and impacts them at high speed into the brush body, where the wire loop is embedded in the bottom of an associated opening. During the movement of the wire loop in the guide rail, the legs of the wire loop are plastically bent toward each other in such a way that the guide rail is close to the ground, yet gradually tapers toward the tip. It is possible, however, that the legs of the wire loops may cross or even intersect depending on the implementation scheme of the guide rail and the desired configuration of the wire loops, but this is not mandatory.

[0003] The tip of the tucking tool is subjected to high temperatures due to the continuous stress on the tucking wire. Summary of the Invention

[0004] Therefore, the object of the present invention is to realize a new thimble tool tip, a guide slider for such thimble tool tip, and a brush filling device having a thimble tool tip according to the invention, which can withstand lower loads, especially thermal loads.

[0005] This is achieved by the tip of a thimble tool of a brush filling device, the tip of which has a guide rail for anchoring a wire loop, the anchor moving in the guide rail and plastically deforming therein, wherein the guide rail terminates at a front end to be placed on the brush body portion to be filled, and has a rear section away from the end and a section near the end, wherein at least one rotatably mounted guide roller is provided, the guide roller extending laterally into the guide rail as a narrowing section and plastically deforming the wire loop.

[0006] The threshing tool tip according to the invention experiences significantly less thermal load than threshing tool tips to date because friction between the threshing and the tip is greatly reduced via at least one guide roller. The novel threshing tool tip, utilized by the applicant in practice and in testing, is characterized by a significantly lower thermal load, resulting in a longer service life. The leg of the threshing associated with the guide roller causes the guide roller to rotate during deformation.

[0007] In a preferred embodiment, the tip of the thimble tool has two opposing sidewalls, forming a guide rail between and by the sidewalls. The sidewalls at least partially guide the wire loop and the packing spring.

[0008] The two sidewalls may optionally be connected to each other by a substrate, wherein the sidewalls may optionally be integrally transitioned into the substrate. That is, the three regions, namely the sidewalls and the substrate, may have a U-shaped configuration or form grooves in cross-section.

[0009] The guide rail can have a smaller width in the closer section than in the farther section, and the guide roller is located in the transition from the closer section to the farther section. In principle, the narrowing required for the plastic deformation of the ferrule can be achieved solely through the guide roller; however, alternatively, it is sufficient to guide the ferrule only in the guide rail after deformation, thereby through the sidewall. That is, one or more guide rollers are contact elements that have no sliding friction with the guide roller during deformation, or have only a small amount of sliding friction and subsequently create pure sliding friction between the ferrule and the tip of the ferrule tool. This also has the advantage that the packing spring can be guided through the sidewall after the guide roller.

[0010] Preferably, a steering roller is associated with each sidewall, that is, two steering rollers are directly opposite each other about the central axis. Of course, the steering rollers can also be slightly offset from each other in the direction of movement.

[0011] The U-shaped groove is locked by a cover that abuts against the sidewall and forms a wall opposite to the substrate that guides the rail and encloses the rail circumferentially.

[0012] The guide roller can be mounted on the tip of the ferrule tool via a sliding bearing or a roller bearing. For sliding bearings, a sliding bushing or a hardened roller can be provided that slides directly on a pin or bolt.

[0013] The above objective is also achieved by a guide slider at the tip of the thimble tool according to the invention, wherein the guide slider has at least one sidewall of a guide rail for an anchor configured as a wire loop and a section near the end of the guide slider opposite to the brush body portion, and a distant section, wherein a steering roller protrudes relative to the sidewall and extends into the guide rail between the near and distant sections.

[0014] The guide slider according to the invention may also have only one sidewall, thus defining one side of the guide rail. If there is only one wall on each side of the guide rail, then the sidewall also forms the entire guide slider. Alternatively, the guide slider has two sidewalls, thus these two sidewalls form the boundary of the guide rail. In this case, the two sidewalls can also form a common guide slider.

[0015] The sidewalls may, optionally, extend in a curved manner in the transition section, such that the guide rail has a smaller width in the closer section than in the farther section.

[0016] Finally, the present invention provides a brush filling device having a thimble tool tip and a filling spring according to the invention, the filling spring being guided in a guide rail and moving along the guide rail, wherein the filling spring is capable of moving its tip from a distant section to the end of the thimble tool tip. Attached Figure Description

[0017] Other features and advantages of the invention will become apparent from the following description and from the accompanying drawings, which are referenced below. The drawings show:

[0018] Figure 1 A schematic perspective view of a variant of the brush filling device according to the invention, having a thimble tool tip according to the invention, is shown.

[0019] Figure 2 A schematic diagram showing the tip of a thimble tool according to the invention, having a guide slider according to the invention, wherein the cap is removed; and

[0020] Figure 3 Showing along with a cover Figure 2 Tangent III-III runs through the schematic cross-sectional view of the guide slider according to the invention and the tip of the ring tool according to the invention. Detailed Implementation

[0021] exist Figure 1 The diagram shows a brush-filling device that pushes brush bristles into a brush carrier 10 with an opening and secures them in the brush carrier by means of anchors in the form of wire loops.

[0022] The brush carrier 10 can be a complete brush body or only a part of the brush body, such as a thin sheet.

[0023] The brush-filling device includes a thimble tool tip 12, a bristle storage section 14, a bundle extractor 16 pivotable about axis X, and a filling spring 18. The anchor conveying mechanism 20 conveys the anchor laterally along the direction of arrow A and perpendicularly to the filling direction of the thimble tool tip 12 in a top view.

[0024] In the illustrated embodiment, the anchor is cut from the line 22 in the device, the line is unrolled from the roller and fed via the electric actuator 24 of the ferrule tool tip 12.

[0025] The movement of the tip of the ring-throwing tool can be linear or along a circular or other curved track.

[0026] In an exemplary and not restrictive sense only, in the illustrated embodiment, the tip 12 of the thimble tool engages on the shaft 26 and can pivot back and forth about axis D, more precisely from... Figure 1 The filling position (the foremost stop) shown in the diagram pivots to the opposite so-called bundle receiving position, which is the opposite rear stop.

[0027] The movement of the throttle tool tip 12 extends along a circular track, which can, however, be linear as described or extend along other potentially curved tracks. In the illustrated embodiment, the throttle tool tip 12 is mounted on a connecting arm 28 for the shaft 26.

[0028] The packing spring 18 is hinged at its rear end to the connecting arm 30, which is also pivotable about axis D. The cam roller 32 allows for the manipulation of the connecting arms 28 and 30.

[0029] The movement of the filling spring 18 is not the same as the movement of the tip of the tamping tool; more precisely, the movement of the filling spring 18 between the filling position and the bundle receiving position precedes the movement of the tip of the tamping tool.

[0030] The tip 12 of the ring-ringing tool has a front portion 34 that can contact the bristle carrier 10 or move very close to its surface. The front portion 34 is fixed at its rear end to a so-called intermediate section 36 and can also transition into the intermediate section in one piece.

[0031] The front section 34 and the middle section 36 have guide rails 38 inside them for filling the spring 18.

[0032] A conveying channel 42 for the wire 22 extends from the upper side 40, extending to the guide rail 38 but terminating there. The processing unit 36 ​​is used to cut the anchor, i.e., the wire loop, from the wire 22.

[0033] The segmented bristle bundle is pushed into the guide rail 38 between the front section 34 and the middle section 36 via the push-in opening 54, and then placed before the wire loop, after which there is a front portion of the filling spring 18. The spring then presses the wire segment with the "U" leg of the U-shaped wire loop in the direction of the bristle bundle before pressing it again through the tool tip 12.

[0034] Figure 2The tip 12 of the ring-ringing tool is shown schematically, and optionally only its front portion 34 is shown.

[0035] The guide rail 38 is laterally bounded by two guide sliders 60 and 62, each guide slider having or forming a sidewall 64 and 66, wherein the sidewalls 64 and 66 laterally bound the guide rail 38. In the illustrated embodiment, the guide sliders 60 and 62 have only sidewalls 64 and 66, such that the guide sliders 60 and 62 simultaneously form sidewalls 64 and 66 and vice versa.

[0036] The tip 12 of the ring-making tool has a forward end 68 facing the brush carrier 10, at which the guide rail 38 terminates. From the end 68, the guide rail includes a forward segment 70 near the end 68 and a segment 72 away from the end 68. (As in...) Figure 2 As can be seen, the width B of the guide rail 38 is smaller in the front section 70 than in the rear section 72.

[0037] Sidewalls 64 and 66 have a transition section 74 between sections 70 and 72. In this transition section, a guide roller 76 is installed in each guide slider 60, 62, wherein the corresponding guide slider 60, 62 has a slightly larger notch 78 complementary to the guide roller 76, in which the guide roller 76 is located. However, the guide roller 76 extends slightly into the guide rail 38, and the guide rail narrows in the transition section 74, thus forming a limiting portion in this area for the movement of the coil 80 within the guide rail.

[0038] Cover 82, in any case, closes the guide rail 38 around the circumference, such as Figure 3 As can be seen in. Figure 3 It can also be seen that the steering roller 76 protrudes slightly laterally into the guide rail 38.

[0039] Guide sliders 60 and 62 can be separate components or integrally transitioned into each other via substrate 84 (see...). Figure 3 The substrate then forms the bottom of the guide rail 38 or forms a cover, depending on whether the cover 82 is located above or below.

[0040] If the guide sliders 60 and 62 are separate components, then the guide sliders are fixed to the base plate 84.

[0041] exist Figure 3 In the embodiment shown, the cover 82 also has grooves that form part of the guide rail 38, wherein this is only optionally the case. It is not necessary to... Figure 3 As shown, the corresponding guide roller 76 extends into the cover 82. The shaft of the guide roller is mounted in the guide sliders 60, 62 and in the cover 82.

[0042] The steering roller 76 is shown here in a cylindrical shape, but it may also have a profile on its side surface, for example, an annular groove.

[0043] The working principle of the brush tamping device is described in the last part of the text with reference to the movement of the tamping spring 18.

[0044] The tip 12 of the thimble tool contains a U-shaped loop 80 with two forward-pointing, i.e., end-68 legs 90, which preferably also extend parallel to each other at this point. The loop 80 accommodates a bristle bundle 94 (see...). Figure 2 The entire assembly consisting of the wire loop 80 and the insert spring 18 moves toward the end 68 within the guide rail 38 via the insert spring 18, wherein preferably the guide rail 38 is wider in the section 72 than the maximum width of the wire loop 80, so that clamping does not occur and thus no increased friction is generated.

[0045] Once the legs 90 contact the guide roller 76, the legs are pressed inwards towards each other by the guide roller and undergo plastic deformation. Here, the legs 90 can extend close to each other or contact each other, as in... Figure 2 As shown in the upper left image of the centerline loop 80, or the leg 90 may even cross in the top view, as in... Figure 2 The upper right corner of the diagram shows the loop 80 in the middle.

[0046] In the front section 70, the wire loops 80 are guided laterally and very tightly in the guide rails 38, in some cases by means of contact with the corresponding sidewalls 64, 66 on both sides. The packing spring 18 is also laterally and tightly guided in the section 70 at its front end, thereby enabling a very precise packing process.

Claims

1. A ferrule tool tip for a brush filling device, comprising: a guide rail (38) for an anchor configured as a wire ferrule (80), the anchor moving in the guide rail (38) and plastically deforming in the guide rail; two opposing sidewalls (64, 66) between the sidewalls and forming the guide rail (38) by the sidewalls, wherein the guide rail (38) terminates at a front end (68) to be placed on a brush body portion (10) to be filled, and has a rear portion (72) away from the end (68) and a portion (70) near the end (68). Its features are, At least one rotatably mounted steering roller (76) extends laterally into the guide rail (38) as a narrowing section and plastically deforms the wire loop (80), wherein the guide rail (38) has a smaller width (B) in the proximal section (70) than in the distal section (72), and the guide rail (38) has a transition section (74) between the proximal section and the distal section (70, 72), wherein the at least one steering roller (76) is located in the transition section.

2. The tip of the ring-making tool according to claim 1, Its features are, The two sidewalls (64, 66) are connected to each other by a base plate (84), wherein the sidewalls (64, 66) protrude relative to the base plate (84) in the direction of the height of the guide rail.

3. The tip of the ring-making tool according to claim 2, Its features are, The sidewalls (64, 66) are respectively integrated into the substrate (84) in one piece.

4. The tip of the ring-making tool according to claim 2 or 3, Its features are, A cover (82) is provided, which abuts against the side walls (64, 66), forms the wall of the guide rail (38) opposite to the base plate (84), and closes the guide rail (38) circumferentially.

5. The tip of the ring-throwing tool according to any one of claims 1 to 3, Its features are, Each sidewall (64, 66) is equipped with a steering roller (76).

6. The tip of the ring-throwing tool according to any one of claims 1 to 3, Its features are, Each sidewall (64, 66) has a notch for accommodating the steering roller (76).

7. The tip of the ring-throwing tool according to any one of claims 1 to 3, Its features are, The steering roller (76) is securely mounted on the tip (12) of the thimble tool via a sliding bearing or a roller bearing.

8. A guide slider (60, 62) for the tip (12) of a ring-ringing tool according to any one of the preceding claims. Its features are, The guide sliders (60, 62) are laterally delimited between them for use as anchors for forming a wire loop (80), and sidewalls (64, 66) are formed on the guide rails (38) respectively, having a section (70) near the end (68) of the guide slider (60, 62) opposite to the brush body portion (10) and a distant section (72), wherein between the near section and the distant section (70, 72), in each At the guide sliders (60, 62), the steering roller (76) protrudes relative to the sidewalls (64, 66) and extends into the guide rail (38), wherein the guide rail (38) has a smaller width (B) in the proximal section (70) than in the distal section (72), and the guide rail (38) has a transition section (74) between the proximal section and the distal section (70, 72), in which the steering roller (76) is located.

9. The guide slider according to claim 8, Its features are, The sidewalls (64, 66) extend in a curved manner in the transition section (74) between the adjacent section and the distant section (70, 72).

10. A brush filling device having a thimble tool tip and a filling spring (18) according to any one of claims 1 to 7, the filling spring being guided in and moving along the guide rail (38), wherein the filling spring (18) is movable at its tip from the remote segment (72) to the end (68) of the thimble tool tip (12).

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