EP2650414B1 - Combing element for a round comb of a combing machine - Google Patents

Description

The invention relates to a combing element for a circular comb of a combing machine, which is connectable via fastening means with a base body of the circular comb, wherein the combing element has a plurality of juxtaposed and aligned transversely to the longitudinal direction of the combing, provided with a tooth set clothing elements. Likewise, the invention relates to a circular comb with multiple combing elements arranged one behind the other.

From practice, embodiments are known, wherein the combing elements for a circular comb of several, provided with a tooth set tooth segments, which are held together by longitudinal bolts. The longitudinal bolts protrude into holes which are provided in the toothed segments. Such an embodiment is z. B. from the DE-33 36 876 A1 refer to. Several combing elements arranged one behind the other (also called latches) form a toothed segment with a closed combing surface. In the cited example, the toothed segments are provided with a dovetail-shaped recess, via which they are connected via a holding body with a base body of the circular comb. The holding body is provided with a corresponding dovetail-shaped counter profile, via which it engages in the recess of the toothed segments and is held via a screw in a recess of the base body. In this embodiment, additional bolts are necessary to hold the tooth segments together, and a special punching is necessary to make the dovetail recess of the tooth segments.

Furthermore, from the DE-10 2009 018 058 A1 a known embodiment, wherein also combing elements are shown, which have a plurality of juxtaposed tooth segments, which are held together by longitudinal bolts. In contrast to the execution of the cited DE-33 36 876 A1 in this case, the fastening of the combing elements via a holding body, which via a correspondingly shaped foot area in a T-shaped recess of a main body of a circular comb engages and is held in the installed position via clamping and spring elements.

The WO 2009/003771 A1 shows an embodiment of a circular comb, wherein a plurality of combing elements arranged one behind the other are fastened on a base body of a circular comb. The individual combing elements in this case have a plurality of adjacent toothed segments, which rest with their base surfaces on a holding body and form a combing segment with a closed combing surface. The holding body is provided with lateral webs, via which the toothed segments are held on the holding body. For attachment of the toothed segments on the holding body, the webs are pressed by special devices against a dovetail-shaped foot part of the tooth segments and thus clamped on the holding body. The respective holding body has a dovetail-shaped portion over which it is held in a correspondingly formed recess in the base body of the circular comb. In addition, the holding body are still fixed via screw in the recess of the body. In the embodiment shown no additional longitudinal bolts are needed to clamp the toothed segments against each other. However, it requires a special device to securely clamp the toothed segments on the body. In addition, a special design of the body is necessary to apply the clamping action.

The invention is based on the object to avoid the disadvantages of known designs and to enable the production of inexpensive and easy to install combing elements.

To solve this problem, it is proposed that the combing element has a holding bar with a bearing surface on which the clothing elements rest with their toothed base opposite base surfaces and - seen in the longitudinal direction of the clothing elements - the ends of the clothing elements, adjacent to the support surface side surfaces of the support rod overhang and the clothing elements are connected via at least one weld with the support rod, wherein the at least one weld between the base surfaces of the support surface of the support rod protruding ends of the clothing elements and the support rod is attached. Thus, a simple and cost-effective production of the combing elements is possible, wherein the individual clothing elements are simply lined up side by side on a support surface of a holding rod to then attach with at least one, extending in the longitudinal direction of the holding rod weld the clothing elements on the support rod. Due to the claimed protruding over the ends of the clothing elements on the support surface of the support rod, it is possible to attach a weld to attach the clothing elements so that it does not adversely affect the juxtaposition of several combing and a continuous Kämmfläche - seen in the circumferential direction of the circular comb - is guaranteed.

In the published CH-644 900 a flat bar of a card is shown, wherein arranged on a bearing surface of a support member juxtaposed clothing elements (wire strands) and secured by welds. The ends (faces) of the clothing elements are aligned with the outer surfaces of the support member. The welds are here in the region of the transition from the support surface of the support member attached to its outer surfaces and should be aligned with the end faces of the clothing elements and the outer surfaces in order to connect as closely as possible an adjacent flat bar with a minimum distance can. In the embodiment shown, it is not a combing element for a circular comb, in which between the successive combing a small distance can worsen the combing effect. The proposed projection of the ends of the clothing elements on the side surfaces of the support rod, the respective weld can be attached without affecting the distance between adjacent support rods and there are no special precautions are taken so that the respective weld with the ends (faces) of the clothing elements and the Side surfaces of the support rod (carrier part) are in alignment. That is, the protruding ends of the clothing elements adjacent combing elements of a circular comb can connect directly and without clearance to each other and thus form a closed Kämmfläche.

Furthermore, it is proposed that between the base surfaces of both ends of the clothing elements, which project beyond the support surface of the support rod and the support rod a weld is provided. It would be conceivable embodiment, wherein the clothing elements are connected only at one end via a weld with the support rod. On the opposite end of the clothing elements could be attached via an additional adhesive bond on the support rod. However, an absolutely firm connection between the clothing elements and the retaining bar is ensured if in each case a weld seam in the region of both ends of the clothing elements is attached.

The weld is advantageously consistently formed and can be made with laser welding.

By the proposed laser welding can be worked with high welding speed and a narrow and slender weld seam with low thermal distortion can be produced.

In order to connect the holding bar and the associated clothing elements quickly and easily with the main body of the circular comb, it is proposed that the holding rod on the opposite side of its support surface for the clothing elements has a holding profile, which provided with a provided in the main body of the circular comb recording at least partially positive connection can take.

It is preferably proposed that the retaining profile has a dovetail-shaped cross-section. This can be made on the holding profile of the retaining rod with a, seen in cross section, the same shape recess in the base of a circular comb a positive connection.

In a further embodiment for fastening the combing element on the base body of the circular comb, it is proposed that the retaining bar be provided on the opposite side of the support surface for the clothing elements with a longitudinal groove, which can take an at least partially positive connection with a fastening means.

The longitudinal groove can have a dovetail-shaped cross section.

Furthermore, the invention relates to a round comb of a combing machine with a base body, on which several seen in the direction of rotation of the circular comb, one behind the other arranged combing elements are mounted via fastening means, wherein the respective combing element has a plurality of juxtaposed and aligned transversely to the longitudinal direction of the combing element, provided with a tooth set clothing elements.

It is proposed that the combing elements each have a holding bar with a bearing surface on which rest the clothing elements with their, the toothed set opposing surfaces and - seen in the longitudinal direction of the clothing elements - the ends of the clothing elements, projecting beyond the support surface side surfaces of the respective holding rod , wherein the oppositely directed ends of the clothing elements of adjacent Kämmelemente adjoin one another directly and the clothing elements are connected via at least one weld to the respective support rod, wherein the at least one weld between the base surfaces, the support surface of the support rod protruding ends of the clothing elements and the support rod is mounted.

This makes it possible to attach the adjoining combing elements, or their clothing element without spacing, to obtain a closed Kämmfläche. It is proposed that between the base surfaces of both ends of the clothing elements of the respective combing element, which project beyond the retaining bar and the holding bar a weld seam is provided.

The welds can each be continuous in the longitudinal direction of the holding rod and be made with laser welding.

For easy attachment of the combing elements on the circular comb is proposed that the holding rod on the opposite side of the clothing elements has a holding profile that can take an at least partially positive connection with a provided in the base body of the circular comb recording. The holding profile can have a dovetail-shaped cross section. Preferably, the claimed according to the invention circular comb is used in a combing machine.

Furthermore, the invention relates to a round comb of a combing machine with a base body, on which several seen in the direction of rotation of the circular comb, are arranged one behind the other combing elements, which together form a combing segment with a closed Kämmfläche, wherein the respective combing element is formed of a plurality of juxtaposed and aligned transversely to the direction of rotation of the circular comb clothing elements.

It is proposed according to the invention that the respective, with their base surfaces resting on the body clothing elements - seen in the longitudinal direction of the clothing elements - are connected in the region of at least one of its ends via a transversely to the longitudinal direction of the clothing elements extending weld with the body, wherein the opposing Ends of the clothing elements are provided with a paragraph, whereby these ends - as seen in the radial direction of the circular comb - overlap stepwise and form a closed Garniturfläche between the adjacent clothing elements.

This makes it possible to attach the respective clothing elements, which connect subsequent to a first clothing element, each with only one weld on the body. At the opposite end of the weld, the clothing element is held by the stepwise covering of the adjacent clothing element.

In this case, an embodiment is proposed, wherein in the region of the overlap only a single weld is provided via which that end of the respective clothing element is connected to the body, which is provided with a - viewed in the radial direction of the circular comb - paragraph, which is the paragraph of the clothing element the outside of the adjacent combing element projects beyond, wherein a distance between the step-shaped ends of adjacent clothing elements is provided in the region of the weld seam.

Further advantages of the invention are shown and described in more detail in subsequent embodiments.

Fig.1

eine schematische Seitenansicht eines Rundkammes nach dem bekannten Stand der Technik

Fig.2

eine schematische Seitenansicht eines Rundkammes mit eine erfindungsgemässen Ausführung der Kämmelemente eines Kämmsegmentes

Fig.3

eine Teilansicht nach Fig.2 mit einer weiteren erfindungsgemässen Ausführung der Kämmelemente

Fig.4

eine Seitenansicht X nach Fig.2

Fig.5

ein weiteres Ausführungsbeispiel einer Befestigung der Kämmelemente über eine Schweissverbindung am Grundkörper des Rundkammes

Fig.5a

eine vergrösserte Teilansicht nach Fig.5.

Show it:

Fig.1

a schematic side view of a circular comb according to the known prior art

Fig.2

a schematic side view of a circular comb with an inventive embodiment of the combing a combing segment

Figure 3

a partial view after Fig.2 with a further embodiment of the combing elements according to the invention

Figure 4

a side view X after Fig.2

Figure 5

a further embodiment of an attachment of the combing elements via a welded connection on the base body of the circular comb

5a

an enlarged partial view Figure 5 ,

Fig.1 shows an already known embodiment of a circular comb 1 of a combing machine with a circular comb shaft 2. On flanges 6, which are rotatably mounted on the circular comb shaft 2, a base body 7 is fixed, which carries a combing segment 5.

The base body 7 can also be fastened directly on the shaft 2. The Kämmsegment 5 consists in the embodiment shown from several - seen in the direction of combing R - successively arranged Kämmelementen (also called latch) K1, K2 and K3, each consisting of a plurality of adjacently arranged Garniturelementen G1, G2, and G3. As shown schematically, the clothing elements G2, or G3 of the combing elements K2, K3, respectively, following the front clothing elements G1 of the combing element K1, have a higher number of clothing teeth GZ per unit length, resulting in a combing effect elevated.

As already described, a combing segment (eg K1) consists of a large number of juxtaposed clothing elements (stamped parts) which are held together or braced against one another via schematically shown bolts B. For this purpose, each clothing element G1 to G3 is provided with two bores through which the bolt protrude. The bolts B are provided at their ends with threads (not shown) through which the clothing elements G1, G2 and G3 are clamped together using nuts (not shown). In the mounted state of the clothing elements, the individual Garniturzähne- seen transverse to the direction of combing R - a lateral distance from each other, such as. B. in the view Figure 4 will be shown.

The combing elements K1 to K3 held together by the bolts B are then connected to the main body 7 via a respective dovetail-shaped rod 9, which is provided with corresponding identical recesses 10. The clothing elements G1 to G3 likewise have dovetail-shaped recesses 8 with which the respective rod 9 can assume a form-locking connection. In order to keep the combing elements K1 to K3 in their installed position (as shown), the rods are fixed on the main body 7 via schematically indicated screws S. In this case, the rods 9 can be provided with threaded bores (not shown) into which the screws S protrude. The clothing elements G1 to G3 are in the installed state with their respective base surfaces 11 on the peripheral surface U of the base body 7.

Fig.2 shows an embodiment of the invention, wherein the circular comb 1 also consists of a circular comb shaft 2, wherein a base body 7, fixed to the circular comb shaft 2 flanges 6 is fixed. Again, a design is conceivable, wherein the base body is mounted directly on the circular comb shaft 2.

The main body 7 has - seen in the combing R - a plurality of successively spaced apart recesses 10, which have a dovetail-shaped cross-section. In these recesses 10, a holding profile H of a holding rod H1, H2, and H3 is added, which is provided with a corresponding mirror-image cross-sectional profile and thus assumes a positive connection with the respective recess 10. The support rods H1 to H3 extend across the width L (FIG. Figure 4 ) of the circular comb 1. In the assembled state, the support rods H1 to H3 lie with their base surfaces 13 on the peripheral surface U of the main body 7. In this position, the support rods are fixed by screws S on the base body 7. In this case, the respective screw S via through holes D (holes) of the base body 7 protrude into the respective recess 10 and take over not shown threaded holes in the retaining profile H with this a mechanical connection. About the respective screws S, the respective base 13 of the support rods H1 to H3 is then clamped against the peripheral surface U of the main body 7. In the mounted position, the opposing side surfaces F of the successive support rods H1 to H3 (seen in the direction of combing R) at a distance a.

On the bearing surface A of the respective holding rod H1, H2, and H3 respectively juxtaposed clothing elements E1, E2, and E3 are fixed, which toothed sets Have ZG with Garniturzähnen GZ. Like from the Figure 4 to take (view X after Fig.2 ) have the juxtaposed clothing elements E1 of the first Kämmelementes K1 each have a foot portion 16 and an adjoining head portion 15 which forms the tooth tip of the respective Garniturzahnes GZ of the gear set ZG. The foot portions 16, which are directly adjacent to one another, have a thickness f, while the head portions 16 have a reduced thickness g with respect to the foot portions. This lanes are formed with a width h, in which the combed out fiber material can penetrate during the combing process.

In terms of the width Ih ( Fig.2 ) of the respective holding rod H1, H2, or H3 seen, the respective clothing elements E1, E2 and E3 project beyond the respective side surface F by a supernatant mass b. At the same time, the ends of directly adjoining clothing elements E1 to E3, which project beyond the dimension b, directly adjoin one another directly and without a large interspace, so that a closed combing surface is formed. There may be a minimum distance between the adjacent ends to accommodate e.g. B. compensate for tolerances.

In the region of, the side surface F of each of the holding rod protruding ends of the clothing elements E1 to E3 below the respective base T of the clothing elements a weld P is attached, extending in the longitudinal direction L of the support rods. The welds P are respectively connected to the base T of the clothing elements E1, E2, and E3 and to the respective side surface F. Preferably, the welds can be made by laser welding.

The proposed attachment of the weld in conjunction with the protruding ends of the clothing elements, it is possible to connect the adjacent ends of the clothing elements directly to each other, without the Kämmfläche is interrupted. That is, the connection of the clothing elements with the respective holding bar via a welded connection has no influence on the direct and seamless juxtaposition of the clothing elements to form a closed combing surface. If you were to provide a welded connection at the described location without protruding ends of the clothing elements, so the welds would hinder the direct juxtaposition of the clothing elements under certain circumstances. As a result of the design proposed according to the invention, the respective welded joint can be attached easily and quickly without taking into account the requirements of the standard. In addition, you can do without this type of attachment to the use of additional bolts through which the clothing elements are held together according to known designs.

In Figure 3 a further embodiment is shown, wherein instead of a holding profile (H), the individual support rods H1 ', H2', or H3 'are each provided with dovetailed recesses M in which a, provided with a corresponding mating profile rod 9 protrudes. The rod 9 protrudes in the assembly position simultaneously in a dovetail-shaped recess 10 of the base body 7 and forms with this a positive connection. About screws S is, as in the embodiment of Fig.1 described, the respective rod 9 fixed and pressed the respective base 11 of the support rods against the peripheral surface U of the body. The attachment of the respective clothing elements E1 to E3 on the respective support rods H1 'to H3' is also via welds P, as in the embodiment of Fig.2 has been described. Also with the execution of in Figure 3 the example shown achieves the same advantages as in connection with the embodiment of Fig.2 have been described.

In the embodiment of Figure 5 a fastening is also proposed, wherein the respective clothing elements N1, N2, N3 with toothed sets ZG of the successively arranged Kämmelemente K1 to K3 via welds P directly on the base body 7 takes place. In each combing element K1 to K3, the respective clothing elements N1 to N3 are as shown in FIG Figure 4 arranged side by side. Also in Figure 5 shown weld seams (eg produced by laser welding) extend over the width L of the main body. The front clothing elements N1 are provided at their rear end with a stepped shoulder 20, which projects beyond a likewise stepped extension 22 of the following clothing elements N2. The protrusion 22 formed with a supernatant k protrudes into the free space of the step-shaped shoulder 20 and is held on the lower surface 21 in the radial direction on the peripheral surface U of the base body 7. Between the inner surface 19 and the end surface 23 of the extension 22, a distance m is provided. Within the free space formed thereby, a weld seam P is attached, which connects the clothing elements N1 with the main body 7.

On the end opposite the extension 22, the clothing elements N2 of the combing element K2 are provided with a shoulder 20 which covers an extension 22 of the following clothing elements N3. Here too, as shown and described with the clothing elements N1 and N2, there is a distance m between an inner surface 19 of the heel 20 and an end surface 23 of the extension 22. In the free space formed thereby, a weld seam between the inner surfaces 19 of the clothing elements N2 and the peripheral surface U of the base body 7 is attached. Thus, the extension 22 of the clothing elements N3 is fixed and held in the radial direction by the heels 20 of the clothing elements N2. At the opposite end of the extension 22, the clothing elements N3 of the combing element K3 are fastened via a weld seam P. In 5a an enlarged view of the design of the ends, or their connection of the clothing elements is shown. Even with this version you get a closed Kämmfläche without interruption. The attachment of the clothing elements directly on the body is easy and inexpensive to perform. Corresponding to the covering of the ends between the clothing elements N1 to N3, the clothing elements are attached in the order K1, K2 and K3. That is, first, the clothing elements N1 of the first combing element K1 on the base body 7 (as shown in FIG Figure 4 ) and over the welds P in the region of their ends (as shown) z. B. connected via a laser weld seam with the base body 7. Subsequently, the clothing elements N2 are placed on the peripheral surface U of the main body 7 and pushed with their extensions 22 under the surface 21 of the paragraph 20 of the clothing elements N1. Then these are connected at the opposite end of the clothing elements N2 via a weld P with the main body. Subsequently, the clothing elements N3 are placed on the peripheral surface U of the base body 7 and pushed with their extensions 22 under the surface 21 of the paragraph 20 of the clothing elements N2. Finally, the clothing elements N3 are connected to the main body 7 at the opposite end of the extension 22 via a weld seam P.

Claims (17)

1. Combing element (K1-K3) for a circular comb (1) of a combing machine which is connectable to a base body (7) of the circular comb via fastening means (9, S), the combing element (K1-K3) having a plurality of adjacently situated clothing elements (G1-G3; E1-E3) which are oriented transversely with respect to the longitudinal direction of the combing element and provided with a toothed clothing (GZ), characterized in that the combing element (K1-K3) has a mounting bar (H1-H3) with a supporting surface (A) on which the clothing elements (E1-E3) rest with their base surfaces (T) opposite from the toothed clothing (ZG), and, viewed in the longitudinal direction of the clothing elements, the ends of the clothing elements protrude beyond the lateral faces (F) of the mounting bar (H1-H3) adjoining the supporting surface (A), and the clothing elements are joined to the mounting bar (H1-H3) by means of at least one weld seam (P), the at least one weld seam (P) being applied between the base surfaces (T) of the ends of the clothing elements (E1-E3) which protrude beyond the supporting surface (A) of the mounting bar (H1-H3), and the mounting bar.
2. Combing element (K1-K3) according to Claim 1, characterized in that a weld seam (P) is provided between the base surfaces (T) of both ends of the clothing elements (E1-E3), which protrude beyond the supporting surface (A) of the mounting bar (H1-H3), and the mounting bar.
3. Combing element (K1-K3) according to one of Claims 1 through 2, characterized in that the weld seams (P) in each case extend continuously in the longitudinal direction (L) of the mounting bar (H1-H3).
4. Combing element (K1-K3) according to one of Claims 1 through 3, characterized in that the weld seams (P) are produced by laser welding.
5. Combing element (K1-K3) according to one of Claims 1 through 4, characterized in that on the opposite side of its supporting surface (A) for the clothing elements (E1-E3), the mounting bar (H1-H3) has a mounting profile (H) which together with a receptacle (10) provided in the base body (7) of the circular comb (1) may establish an at least partial positive-fit connection.
6. Combing element (K1-K3) according to Claim 5, characterized in that the mounting profile (H) has a dovetail-shaped cross section.
7. Combing element (K1-K3) according to one of Claims 1 through 4, characterized in that the mounting bar (H1'-H3') is provided with a longitudinal groove (M) on the opposite side of the supporting surface (A) for the clothing elements (E1-E3), which is able to establish an at least partial positive-fit connection with a fastening means (9).
8. Combing element (K1-K3) according to Claim 7, characterized in that the longitudinal groove (M) has a dovetail-shaped cross section.
9. Circular comb (1) of a combing machine, having a base body (7) on which multiple combing elements (K1-K3) which are situated one behind the other, viewed in the direction of rotation of the circular comb, are mounted via fastening means (9, S), the particular combing element having a plurality of adjacently situated clothing elements (G1-G3; E1-E3) which are oriented transversely with respect to the longitudinal direction of the combing element and provided with a toothed clothing (ZG), characterized in that the combing elements (K1-K3) in each case have a mounting bar (H1-H3) with a supporting surface (A) on which the clothing elements (E1-E3) rest with their base surfaces (T) opposite from the toothed clothing (ZG), and, viewed in the longitudinal direction of the clothing elements, the ends of the clothing elements protrude beyond the lateral faces (F) of the particular mounting bar (H1-H3) adjoining the supporting surface (A), the mutually facing ends of the clothing elements (E1-E3) of adjacent combing elements directly adjoining one another, and the clothing elements being connected to the particular mounting bar (H1-H3) by means of at least one weld seam (P), the at least one weld seam (P) being applied between the base surfaces (T) of the ends of the clothing elements protruding beyond the supporting surface (A) of the mounting bar (H1-H3), and the mounting bar.
10. Circular comb (1) according to Claim 9, characterized in that a weld seam (P) is provided between the base surfaces (A) of both ends of the clothing elements (E1-E3) of the respective combing element (K1-K3), which protrude beyond the mounting bar (H1-H3), and the mounting bar.
11. Circular comb (1) according to one of Claims 9 through 10, characterized in that the weld seams (P) in each case extend continuously in the longitudinal direction of the mounting bar (H1-H3).
12. Circular comb (1) according to one of Claims 9 through 1, characterized in that the weld seams (P) are produced by laser welding.
13. Circular comb (1) according to one of Claims 9 through 12, characterized in that the mounting bar (H1'-H3') has a mounting profile (H) on the opposite side of the clothing elements (E1-E3), which together with a receptacle (10) provided in the base body (7) of the circular comb may establish an at least partial positive-fit connection.
14. Circular comb (1) according to Claim 13, characterized in that the mounting profile (H) has a dovetail-shaped cross section.
15. Combing machine having a circular comb (1) according to one of Claims 9 through 14.
16. Circular comb (1) of a combing machine, having a base body (7) to which multiple combing elements (K1-K3) which are situated one behind the other, viewed in the direction of rotation of the circular comb, are fastened, the particular combing element being formed from a plurality of adjacently situated clothing elements (N1-N3) which are oriented transversely with respect to the direction of rotation (R) of the circular comb, characterized in that the particular clothing elements (N1-N3), which with their base surfaces (T) rest on the base body (7), are connected to the base body (7), viewed In the longitudinal direction of the clothing elements, in the area of at least one of their ends by means of a weld seam (P) extending transversely with respect to the longitudinal direction of the clothing elements, the mutually facing ends of the clothing elements (N1-N3) being provided with an offset (20, 22) In such a way that these ends overlap one another in a stepped manner, viewed in the radial direction of the circular comb (1), and form a closed clothing surface between the adjacent clothing elements.
17. Circular comb (1) according to Claim 16, characterized in that only one weld seam (P) is provided in the area of the overlap, by means of which the end of the particular clothing element that is provided with an offset (20), viewed in the radial direction of the circular comb, and which outwardly protrudes beyond the offset (22) of the clothing element of the adjacent combing element, is connected to the base body (7), a distance (m) being provided between the stepped ends of adjacent clothing elements in the area of the weld seam (P).

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