EP2128319A1 - Two-layer system component of a knitting system - Google Patents

Abstract

The system component (3) has two parts (15, 16) each with a flat side and contour, where the two parts are even plates. The contour (29) of the part (15) differs from the other contour by an edge (26). The parts are arranged next to each other and connected with each other, and the flat sides turn towards each other. The contours in a section congruently correspond with each other, and deviate from each other when the contours are located outside the section. The two parts have a foot section, which serve to drive the system component. An independent claim is also included for a method for manufacturing a system component for a knitting system.

Description

The invention relates to a system part for a knitting system of a knitting machine. The term "system part" refers to any independent part of a knitting system, such as a needle, a coupling part, a selection part, a Einschließplatine, a tee board, an enclosure and tee boards and the like.

In particular, for very fine pitches, include and debounce boards have been used, which are formed as thin sheet metal parts of substantially uniform thickness, with the thickness being reduced adjacent the fillet edge. Of the Einschließraum and the Kulierkante adjacent portion of the containment and deburring board is often referred to as "working part". This part or section of the containment and deburring board can come in the knitting process with knitted fabric or thread. The remaining sections of the containment and debarking board are often referred to as a "holding part". The holding part serves to hold and guide the working part.

From the DE 195 20 985 a circuit board is known whose working part has a smaller thickness than its holding part. The transition from the thinner work area to the thicker hold area is formed by a step below the containment space.

For the production of boards with sections of different thickness suggests the DE 69 311 629 T2 the use of "Taylored Blanks" before. Such a Taylored Blank consists of two welded together at one edge metal strips of different thickness, from this sheet metal strip then the desired boards are punched out. The punching pattern is placed so that the holding part of the board is punched out of the thicker part of the Taylored blank and the associated working part of the thinner section.

Such a steel strip can also be produced, for example, in a rolling process, with lots of different thickness being produced in the sheet metal strip in the rolling process. The production of Taylored blanks or special rolled sections is technologically complex and does not necessarily lead to the desired quality. The development in the field of knitting machine technology with respect to ever finer divisions increases the demands on the geometry and functionality of the boards used. The production of these boards and the production of the starting material for these boards are subject to the highest precision requirements. On the other hand, in the market there is the expectation of competitive prices.

From this, the object underlying the invention is based on pointing out a possibility with which blanks or other system parts of knitting systems can be produced in high quality in a simple and process-reliable manner.

This object is achieved with the system part according to claim 1 as well as with the method according to claim 15:

According to the invention, it is proposed to assemble the system part in question from at least two parts which are arranged side by side flat against one another and rest in relation to one another, i.e. with respect to each other. not be moved relative to each other. The two parts have different outlines. While one of the two parts has an outline which delimits both the working section and the holding section, the other of the two parts has an outline which does not or only partially delimits the working part. Although the two parts are partially congruent, their outlines thus deviate from one another in at least one place.

The two parts can have the same thickness. For example, if a containment and deburring board having a total thickness of 0.5 mm is desired, each of the two parts may have a continuous uniform thickness of 0.25 mm. The two parts can be inexpensively made from a sheet-like blank, ie, for example, a sheet of uniform thickness. Cost effective methods are known. For example, stamping methods, laser cutting methods or the like can be used. The two outlines are different. However, they can match in sections. For example, a part may have one Have edge or outline that matches the outline or edge of the other part in the area of the working part.

In other words, the at least two parts of the system part have a congruent or partially congruent section, while they are not congruent in another area, which in particular belongs to the working part. This concept applies both to system parts that consist of two flat parts, as well as system parts, which consist of three or more flat parts accordingly. If the system part only consists of two parts, the result is an asymmetrical structure. The working part is offset from the center of the system part or the circuit board. If a symmetrical design is desired, a first middle part can be used, on the working part of which congruent second parts are attached on both flat sides.

The two parts may have the same or different thicknesses. This also applies if the system part consists of several parts. For example, a flat part of 0.15 mm in thickness can be attached to a middle part with a thickness of 0.2 mm on both flat sides, which leads to a total thickness of 0.5 mm.

The two parts have at least one congruent area with a connection extension. This preferably forms the control foot of the system part. The actual connection of the two parts with each other, for example, take place in that a joining element is placed on the connection extension. This can be embossed or caulked with the connection extension.

The attached joining element can be used as a control foot. It then has at its front and rear edges friction surfaces, which are preferably wider than the total thickness of the system part. For example, if this has the above-mentioned thickness of 0.5 mm, the friction surfaces are preferably at least 0.65 mm wide. It is considered advantageous if the width of the friction surfaces is about 30% greater than the thickness of the system part itself. This measure has a wear-reducing effect. In addition, the friction surfaces or edges can be optimized with respect to needle locks, for example by a bevel or rounding.

Basically, the connection of the two parts of the system part or the board by a single joining element extends to ensure the functionality. However, it may be advantageous to additionally support the connection of the two parts. For this purpose, the two parts can be connected to each other by known joining methods, such as by gluing, by attaching further connecting or joining elements, such as rivets, or by attaching welds or welds.

As a joining element are brackets or sleeves that surround the two connection extensions, or rivets that are used in openings of the two parts. Preferably, a foot cap is provided as a joining element, which encloses the foot extensions. Preferably, this joint cap has a slot into which the connection extensions of the two parts are inserted congruent to one another. They are thereby fixed in parallel position. The final fixation of the two parts to one another can then be achieved, for example, by unilateral crimping of the connection extensions and done with the foot cap. For this purpose, a side window may be provided in the foot cap.

One advantage of the solution according to the invention is the ability to produce system parts, in particular boards of graduated thickness, without requiring an additional heat treatment of the system part. In addition, with the method according to the invention, a large number of different shapes of the holding part can be produced. For example, apertures may be provided in the substantially congruent region of the two parts, which coincide or at different locations, i. are not congruent in order to prevent, for example, the friction of the system parts in the needle channel or Platinum channel, for. To form oil reservoirs or cavities for absorbing abrasion. This measure also reduces the contact surface between side surfaces of the system part and the web walls of the channel in which the system part is used and in which it moves.

To prevent ingress of dirt between the two parts of the system part, it makes sense to glue or weld the two parts together. The adhesive bond preferably completely fills the gap between the two parts. The welded joint is preferably limited to one or a few places. It may also be useful to provide the two parts with a small lateral bend, so that when they are pressed against each other and connected to each other, biased against each other.

• Fig. 1 ein erfindungsgemäßes Systemteil in Gestalt einer Einschließ- und Abschlagplatine, in Perspektivdarstellung.
• Fig. 2 die Platine nach Figur 1, in Seitenansicht.
• Fig. 3 ein Teil der Platine nach Figur 1 und 2, in Seitenansicht.
• Fig. 4 ein anderes Teil der Platine nach Figur 1 und 2, in Seitenansicht.
• Fig. 5 ein Fügeelement zur Verbindung der beiden Teile der Platine miteinander.
• Fig. 6 die beiden Teile mit einer Biegung vor dem Fügevorgang in einer Ansicht ihrer unteren Schmalseite.
• Fig. 7 die beiden Teile in gefügter Form entsprechend der Darstellung nach Figur 6.
• Fig. 8 bis 10 Teile einer alternativen Ausführungsform eines Systemteils, in perspektivischer Seitenansicht und
• Fig. 11 ein Platinenbett mit einer erfindungsgemäßen Platine und einer Nadel zur Veranschaulichung der Einbausituation.

Further details of advantageous embodiments of the invention are the subject of the drawing, the description or claims. Show it:

• Fig. 1 an inventive system part in the form of a Einschließ- and tee board, in perspective view.
• Fig. 2 the board after FIG. 1 , in side view.
• Fig. 3 a part of the board after FIGS. 1 and 2 , in side view.
• Fig. 4 another part of the board after FIGS. 1 and 2 , in side view.
• Fig. 5 a joining element for connecting the two parts of the board together.
• Fig. 6 the two parts with a bend before the joining process in a view of their lower narrow side.
• Fig. 7 the two parts in mated form as shown FIG. 6 ,
• Fig. 8 to 10 Parts of an alternative embodiment of a system part, in a perspective side view and
• Fig. 11 a board bed with a board according to the invention and a needle to illustrate the installation situation.

In FIG. 1 there is illustrated a knitting system 1 which includes two parts of the system. A first system part is formed by a needle shown in dashed lines, for example a latch needle 2. The other part of the system 3 is formed in the present embodiment by a circuit board 4, which serves as Einschließ- and knock-off board. The board 4 sits like FIG. 11 shows, in a board bed 5, in the board channels 6 (6a, 6b) are formed. In these, the boards are moved back and forth in a direction indicated by an arrow 7 direction. To drive a control foot 8, which is in engagement with a board lock, not further illustrated.

The needles 2 sit in corresponding needle channels and are longitudinally movable in the direction of the arrow 9 across the boards 4.

The system part 3 generally and specifically the circuit board 4 has a working part 10 and a holding part 11. The working part 10 may come in contact with the thread or the knit during the knitting operation and runs in the sinker channel 6a. The holding part 11, however, sits in the rear part 6b of the respective sinker channel 6 and does not come into contact with the thread. The holding part 11 carries the control foot 8. At the working part 10 a Fadeneinschließraum 12, a Kulierkante 13 and a hold-down 14 are formed.

The system part 3 is according to FIG. 1 a flat sheet metal part with at least two, preferably three, different thicknesses. It is formed by two flat superimposed parts 15, 16, the contours of which partially coincide with each other and differ from each other in other sections. While the first part 15 has both a working portion 17 and a holding portion 18, the working portion is at least partially absent in the second part 16. It preferably has only one holding section 19. The parts 15, 16 each have a flat side 15a, 16a, they according to FIG. 6 turn to each other and with which they at least partially abut each other ( FIG. 7 ).

The holding parts 18, 19 of the two parts 15, 16 are preferably congruent with each other, ie their edges coincide with each other. This is based on FIG. 2 recognizable. The overhead part 16 has a closed outline 20, to which various substantially straight sections 21 to 25 belong. These sections 21 to 25 of the outline 20 are congruent with the edge of the underlying part 18. To the outline 20 but also includes an edge 26 which extends from a point 27 on the underside of the board 4 to a point 28 on the upper side of the board 4 in the vicinity of the blank holder 14. The edge 26 belonging to the edge 26 forms on the board 4 a stage in which the total thickness of the board 4 changes, as in particular from FIG. 1 becomes apparent.

FIG. 4 illustrates the outline 20 of the second part 16 separately. On the other hand, the contour 29 of the first part 15, which corresponds in part to this outline 20 but differs overall, is out FIG. 3 seen. It agrees with the outline 20 at the sections 21, 22, 23, 24 and 25. However, the sections 21 and 25 extend beyond the locations 27, 28 into the working part 17. At the portion 21 close to the hold-down 14 a hold-down edge 30, a front rise 31, a front end edge 32, a lower edge 33 and a further edge 34, which meets at a corner of the section 25 of the outline. The outline 29 thus differs from the outline 20 by the elements denoted by 30, 13, 31, 32, 33 and 34. The outline bounds not only the holding section 11 but also the working section 10.

The two parts 15, 16 are flat sheet metal parts which lie with their flat sides against each other and in their respective working part 18, 19 are aligned congruent to each other. Both each have a foot extension 35, 36 which projects, for example, from the portion 23 of the outline. The foot extension 35, 36 preferably extends transversely to the direction of movement 7, which in order to facilitate the reference in the FIGS. 3 and 4 is registered. The foot extension 35, 36 stuck, as in the Figures 1 and 2 indicated in a footcap 37, which made FIG. 5 separately. It is only schematically illustrated there. For example, a bent stamped part or the like, for example, can be formed as a clamp by means of a bent sheet metal part.

The foot cap 37 has on its underside a slot 38, through which the foot extensions 35, 36 extend into the longitudinally and transversely rectangular interior of the foot cap 37. The size of the interior of the foot cap 37 preferably corresponds substantially with the size of the foot extensions 35, 36, so that they are held parallel to each other and aligned congruently when they plug in the foot cap 37. The foot cap 37 is preferably provided with a window 39 passing through one of its flat sides, for example. It can also be flat on both Pages may be provided the same or differently formed openings.

Are the foot extensions 35, 36 inserted into the foot cap 37, the two parts 15, 16 are held congruent. Preferably, they are secured in this position by the base cap 37 and / or at least one of the two foot extensions 35, 36 (preferably both) are plastically deformed at edges 40, 41, so that a positive connection is formed. This process can also be referred to as crimping. The corresponding deformation areas are in FIG. 2 indicated at the edges 40, 41.

How out FIG. 1 and 5 can be seen, the foot cap 37 at its transverse to the direction of movement 7 front and rear flanks friction surfaces 42, 43, which are formed as narrow, preferably slightly curved or beveled at the edges strip-shaped surfaces. The friction surfaces 42, 43 each have a width 44 which is greater than the total thickness of the board 4. The width 44 is perpendicular to the flat sides of the board 4 to measure. The same applies to the thickness 45 of the blank 4 in the holding area 11, which is entered in FIG. 1 in a corresponding manner. The thickness 45 is the sum of the thicknesses of the two parts 15 and 16. In the working area 10, however, the blank 4 is thinner. It has here only the thickness 46 of the first part 15. The thickness 46 is, for example, half as large as the thickness 45. This applies if the parts 15, 16 are the same thickness. But they can also be different thicknesses to achieve a different thickness gradation.

The board 4 described so far has three different thicknesses 44, 45, 46. The wide friction surfaces 42, 43 ensure high wear resistance on the foot. The relatively large thickness 45 of the holding portion 11 ensures high stability. The small thickness 46 of the working portion 10 allows the achievement of very fine pitches. The step 26 may, as shown, be straight or deviating arcuate or follow any other course. It may be oriented transversely or parallel to the direction of movement 7. In other words, the location 27 may be located both at the bottom at the edge portion 25 and elsewhere, such as at the edge 34, 33 and 32 or 31. The point 28 can be arranged on the section or the edge 21 or also on the edge 22.

The holding portion 11 may be at its bottom, as in Figure 1 to 4 indicated to be provided with a cutout 47. The cutout 47 may, as shown, be formed on both parts 15, 16 and there congruent to each other.

It is also possible to provide the cutout 47 at the two parts 15, 16 at different locations.

In the embodiment presented so far, the parts 15, 16 are held together only by the foot cap 37. However, it is also possible to provide further or other connection means. For example, the two flat parts 15, 16 may be glued together on their flat sides, for example, over the entire surface. This is particularly useful to prevent the ingress of abrasion and dirt into the joint between the two parts 15, 16.

Additionally or alternatively, the two parts 15, 16 are also welded together at one or more locations, for example by spot welding, laser welding or the like.

Like the FIGS. 6 and 7 illustrate, it is also possible, the two parts 15, 16 to blow something, ie with a curvature to be provided so that the two parts 15, 16, as in FIG. 6 Illustrated, slightly arched away from each other. Are they then joined together and held together by the foot cap 37, they lie flat against each other, in particular, the ends or edges are resiliently biased against each other. This can be used to make the circumference of the part 16 tight against the corresponding parts of the part 15.

The FIGS. 8 to 10 illustrate a modified embodiment to illustrate possible modifications. In the FIGS. 8 and 9 illustrated parts 15, 16 are largely consistent with the above-described parts 15, 16, so that like reference numerals are provided and reference is made to the above description accordingly. There is a difference in the position of the recess 47. This is offset at the two parts 15, 16 in the axial direction (arrow 7). Another difference is the design of the connecting and joining element. Instead of a simple foot cap, a drive element 48 is provided here, that has a foot cap 37-like section 37 '. From this extends an extension with a drive foot 49 away. The drive foot 49 and the extension may have a thickness consistent with the portion 37 ', the total greater than the total thickness of the consisting of the parts 15, 16 board.

According to the invention, a system part 3 with a stepped thickness is produced by producing two parts 15, 16 of uniform thickness, which have different contours 20, 29. The two parts 15, 16 are aligned with their large side surfaces lying together congruent and interconnected. Optionally, her foot extensions 35, 36 are provided with a foot cap 37, which can also serve to connect the two parts 15, 16 with each other. In this way, a high-precision and wear-resistant system part is obtained in a simple manner.

Reference numerals:

1

knitting system

2

needle

3

system part

4

circuit board

5

platinum bed

6, 6a, 6b

platinum channels

7

arrow

8th

control butt

9

arrow

10

working part

11

holding part

12

Einschließraum

13

coulier

14

Stripper plate

15

first part

15a

flat side

16

second part

16a

flat side

17

working part

18

Holding part of the first part 15

19

Holding part of the second part 16

20

second outline

21 - 26

Sections or edges of the outline 20

27, 28

Job

29

first outline

30

Hold-down edge

31

rise

32

front end edge

33

lower edge

34

edge

35, 36

foot extension

37

foot cap

37 '

footcap-like section

38

slot

39

window

40, 41

margins

42, 43

friction surfaces

44, 45, 46

thick

47

neckline

48

driving part

49

foot

Claims (15)

System part (3) for a knitting system of a knitting machine,
a first part (15) having a first flat side (15a) and a first outline (29),
a second part (16) having a second flat side (16a) and a second outline (20),
wherein the first outline (29) differs from the second outline (20) by at least one edge (26), and wherein the two parts (15, 16) are juxtaposed and turned towards each other, their flat sides (15a, 16a) facing each other. System part according to claim 1, characterized in that the first outline (29) and the second outline (20) in at least one section (21-25) coincide with each other congruent and outside of this section (21-25) differ from each other. System part according to claim 1, characterized in that the two parts (15, 16) are flat sheet metal parts. System part according to claim 1, characterized in that the system part (3) has a working section (10) and a drive section (11) and that the working section (10) is formed only by the first part (15), while the drive section (10) is formed by two parts (15, 16). System part according to claim 1, characterized in that the two parts (15, 16) each have a foot portion (35, 36) which serve to drive the system part (3). System part according to claim 5, characterized in that the parts (15, 16) on the foot sections (35, 36) are interconnected. System part according to claim 1, characterized in that the parts (15, 16) are interconnected by a clamp which engages around the foot portions (35, 36). System part according to claim 7, characterized in that the clip friction surfaces (42, 43) having a width (44) which is greater than the total thickness (45) of the system part (3). System part according to claim 6, characterized in that the foot portions (35, 36) are crimped together. System part according to claim 1, characterized in that the parts (15, 16) are connected to each other areally. System part according to claim 10, characterized in that the two parts (15, 16) are glued together over the entire surface. System part according to claim 1, characterized in that the parts (15, 16) are welded together. System part according to claim 1, characterized in that at least one of the parts (15, 16) in the drive section is provided with at least one recess (47). System part according to claim 1, characterized in that it is a circuit board (4). Method for producing a system part (3) for a knitting system (1), in particular for producing a circuit board (4), comprising the following steps: Providing a first part (15) having a first outline (29), Providing a second part (16) having a second outline (20) different from the first outline (29), Arranging the two parts (15, 16) in aligned relation to each other and lying flat against each other and Connecting the two parts (15, 16) with each other.

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