EP1382557A1 - Reel, flange of a reel and tension rod - Google Patents

Abstract

The cable drum is fitted with a tensioning bar (5). This fits through holes (9, 10) in the drum flanges (2, 3) and has curved ends which fit into smaller holes (14, 15) and are held in place by pins (11, 12). Independent claims are included for: (a) the tensioning bar; and (b) the drum flanges.

Description

The invention relates to a coil with two flanges and one Core and with tie rods to fix the flanges and the core in the relevant arrangement for the coil shape, whereby the tie rods are inserted through holes in the flanges with at least one reshaped end on the tie rod that by the Radially cantilevered central section of the tie rod, and a Coil flange and a tie rod.

Such coils are preferably used to transport Cables, strands, piping and similar products. It deals are medium-sized coils with a flange diameter of e.g. 5⊘⊘ mm.

A coil of the type mentioned is known from EP 1176111 A2. It is a wooden spool. The two flanges have aligned through holes for the tie rods, the holes corresponding to the cross section of the tie rods. One end of the rod-shaped tie rod shown there is angled and the angled end serves as a stop when pushing through and as an abutment when connecting the flanges to the core. The second end of the tie rod, which projects minimally on the outside on the opposite flange side, is secured by a clamping nut and is designed without any final deformation. The clamping nut is placed on the undeformed ends of the tie rods in a press-like device in which the assembled coil is received and ensures the tensioning of the entire coil. The core of this coil is centered in a groove on the inside of the flanges.
It is also mentioned there that the second rod end can subsequently be riveted, expanded or deformed, this deformation being intended to secure an additional ring, a washer or the like.

The disadvantage of this coil is that the flanges and the core, as well as the actual tie rods, additional Components are required and a device of the rank one Machine is needed to press on the clamping nuts. A Disassembly without destruction does not seem possible.

The invention is therefore based on the object of a coil propose that is simpler in its structure and without one Pick-up device for the coil does not require assembly and is particularly inexpensive.

The solution to this problem is in the characterizing part of Claim 1 reproduced. The second reshaped end the tie rod towards the end of the coil assembly by a large one Hole in the last flange wall and then preferably shifted radially outwards. In this radially outwardly displaced position engages behind the radially projecting end section at the second end of the tie rod the flange wall and is in this by the fixative held radially outward shifted position. So reach around all tie rods immediately with their reshaped ones End the flange walls and the core arranged between them the core interior. In that the reshaped The end sections clamp the flange directly a one-piece tie rod that at least the axial bracing the coil ensures. At least the bent ones End sections of the tie rods are on the inside of the Bending point bent sharply to the bending stress of the Minimize bracket. This sharp-edged bend is formed at least on one side of each tie rod. The fixing means position the tie rods in a radial Direction and the formed ends related in their rotational position on the longitudinal axis of the tie rods. The tie rods designed in this way can be completely prefabricated industrially from one piece are and do not need any plastic deformation in the Assembly. The fixing means allow the positioning to be released the tie rod and thus the ability to disassemble the coil. A One side of each tie rod can be used as a final deformation have an upset head with its transition to Shank of the tie rod in a hole in the associated flange that is smaller than the head. The big hole for the second deformed longitudinal end of the tie rod is then arranged only on the second flange, as well the fixing means for this side of the tie rod.

An embodiment of the invention is characterized in that both ends of the tie rods projecting radially in the flange plane are formed by bending the rod ends. This eliminates the need for additional components to clamp the flanges. Bending the ends of the rod-shaped tie rods is an inexpensive manufacturing process. The tie rods can be completely prefabricated industrially. This measure also has the advantage that both flanges can be of the same design.
By spreading the bent ends of the tie rods, which make them look like clips, and loosening the fixation, the coil can be easily removed without destroying the tie rods.

In a further development of the invention, the means are proposed to fix the at least one with the radially projecting Section formed end with a further bend to provide the free rod end, this second Bending a recess or a projection on the outside in the flange assigned. The distance between the first and the second, sharp-edged kink on the one under consideration End section of the tie rod is dimensioned so elastic that the second bend during assembly and disassembly after can be pulled outside and in the final position of the complete tie rod with the recess or the projection hooked. When using a recess for snagging the entire reshaping of the ends takes the form of a handle Walking stick. The recesses in the flange for the stub-shaped pegs are preferably considered to be about that Bores corresponding to the diameter of the stub-shaped pins educated. They can be used as blind or through holes be designed.

Retained tie rod with two double angled ends with its straight middle section an approximately C-shaped shape. The C-shape lies in one plane.

Alternatively, the alignment of the stub-shaped pegs at the bent ends of the tie rods in any direction within the flange wall thickness.

The angled from the middle sections of the tie rods The ends can also be in Circumferential direction or also inwards on the coil axis point if due to the size of the coil for such Arrangement is enough space.

In a simplified development of the invention provided that the holes in the flange for pushing through the Tie rods with their outer circumference in relation to the coil axis lie on the inner circumference of the core. This makes it possible to dispense with additional means for centering the core, because the tie rods in their fixed position do this task take over with.

Another embodiment of the invention is characterized by at least one plug with which after the tie rod is installed remaining hole sections in the flanges closed and the tie rods are fixed in the remaining hole. The Securing the tie rods against rotation about their longitudinal axis through the plugs themselves and at least one molded on them Fork and / or by projections or recesses on the Flanges in the area of the end sections of the tie rods respectively. This embodiment is particularly suitable for Plastic coils in which the plugs, e.g. with a Film hinge can be molded immediately.

In a continuation of the invention it is provided that the second turn of the rod end into the winding space of the coil points and dips into a hole in a flange wall. All The tie rods are then in the same plane educated. The recess can then have the shape of a Have a through hole in the flange wall.

To standardize the flange formation and Simplification of the assembly can in a further embodiment Invention can be provided that both ends of the rod-like Tie rods are kinked twice and the outermost Dip the bent sections into the flange wall.

To improve the load capacity of the flange on the Supporting points of the tie rods can be used for further training Feature of the invention be provided that the tie rod a have flat long sides. Practically band irons come here or square wire as a raw material for the tie rods in Question.

In a development of the invention it is provided that at least one tie rod in a resting seat between the core and Push-through opening is fixed in the flange or between the core and Push-through opening is jammed. This is the tie rod held in scissors shape between the coil core and the flange. In the case of pure clamping, this only takes place frictionally, whereby the tubular coil core through the tie rod on the Contact point experiences a slight outward deformation. Around reach this clamping position with little effort the through hole in the flange for the Anchoring a piece of perforated edge that is approximately asymptotic approaches the inner circumference of the spool core so as to between the Inner circumference of the core and this curve piece one form tapering gap in which the tie rod can be pinched to then in the clamped position to be secured by the means for fixation.

The alternative resting seat as a positioning device for the Tie rod, with elements of both friction and Form fit, allows the core, at least partially spring back if the tie rod after exceeding one Latch has reached the resting seat. The so snapped End areas of the middle sections of the tie rods nestle thereby in the click seat on the flange and thus form a relative large area.

In conjunction with the double angled ends of the Tie rods result in at least double support one end of the tie rod in the coil flange and one preloaded centering and support of the coil core relative to the flanges. Since the tie rods are preferably made of steel and the coil material is otherwise comparatively soft, it can be assumed that the load of the winding changes with the considered tie rod end supported twice on the flange, namely with the stub-shaped end sections of the double angled tie rod that is in the flange from the outside reach in and with the end portions of the core penetrating middle sections of the tie rod. Are there slight deformations on the perforations for the tie rods tolerable, since it is preferably disposable coils.

The coil of the invention also gets its stamp from Training of the tie rods, with primarily in mind is that both ends of each tie rod are single or double, are bent approximately at right angles. Find the turns preferably held on the same level. The tie rod is a flat product. One from the coil core and both Flanges penetrating part of the tie rod formed The middle section is rectangular on both sides bent end continued. This results in a U-shape of the Tie rod. It is preferred to remember the bent ends with another stub that is also bent at right angles complete. This leads to a C-shaped shape of the Tie rod. The protruding length of the stub is less than that Flanschwandstärke. The angled ends are like springs trained and allow bending of the end of a Tie rod by at least one flange wall thickness without one to experience plastic deformation.

The significant design change according to the invention are essentially expressed on the coil flanges that are particularly characterized in that each flange for each tie rod has two holes, one for pushing the Tie rod end and one for hooking the stub onto the free End of the tie rod end.

Fig. 1 :

Eine Spule im Halbschnitt nach der Erfindung;

Fig. 2 :

einen Ausschnitt aus einer Seitenansicht von Fig. 1;

Fig. 3 :

einen Ausschnitt aus einer Seitenansicht eines Spulenflansches;

Fig. 4 :

einen Schnitt nach Linie IV-IV in Fig.3;

Fig. 5 :

einen Ausschnitt aus einem Spulenflansch mit einer besonderen Ausbildung eines Endes eines Zugankers;

Fig. 6 :

einen Schnitt nach Linie VI-VI in Fig.5;

Fig. 7 :

einen abschnittweise dargestellten Zuganker mit rechteckförmigem Querschnitt;

Fig. 8 :

ein Stück Zuganker mit Endabschnitt und spezieller Querschnittsausbildung;

Fig. 9 :

Einen Flansch mit unterschiedlichen Ausgestaltungen der Löcher zur Aufnahme der Zuganker.

The invention is explained in detail with reference to the drawing. Show:

Fig. 1:

A coil in half section according to the invention;

Fig. 2:

a section of a side view of Fig. 1;

Fig. 3:

a section of a side view of a coil flange;

Fig. 4:

a section along line IV-IV in Figure 3;

Fig. 5:

a section of a coil flange with a special design of one end of a tie rod;

Fig. 6:

a section along line VI-VI in Figure 5;

Fig. 7:

a tie rod shown in sections with a rectangular cross-section;

Fig. 8:

a piece of tie rod with end section and special cross-sectional design;

Fig. 9:

A flange with different configurations of the holes for receiving the tie rods.

In Fig.1 a plywood coil 2 is shown, which consists of two Flanges 2, 3 and a core 4, the flanges 2,3 and the core 4 by preferably at least three tie rods 5 be held together. There are three on the inner circumference of the core 4 Tie rods 6 evenly distributed, only one of which is shown is. The tie rods 5 are through holes 9, 1⊘ in the flanges 2, 3 inserted. The tie rods 5 start from their Middle section 6 within the core 4 at both ends end sections 7, 8 angled to a clamp, at the Pins 11, 12 pointing into the winding space 25 of the coil 1 are formed by a further bend. The pins 11, 12 serve to fix the tie rod in the coil. Both Bends of each anchor end lie in the same plane, a longitudinal plane of the coil 1. The pins 11, 12 engage in Recesses 14, 15 in the flanges 2, 3 at the level of Changing room 25 are arranged. The tie rods 5 are off Square wire made. The tie rods 5 are used for assembly the coil 1 through the holes 9, 1⊘ in the flanges 2, 3 plugged. The holes 9, 1⊘ are dimensioned so that the bent ends 7, 8 fit through holes 9, 1⊘. With your in the radial direction, based on the coil axis 22 outer The circumference 23 (FIG. 2) touches the holes 9, 1⊘ the inner circumference 24 of the core 4. The distance of the recesses 14, 15 from the Circumferential sections 23 of the holes 9, 1⊘ corresponds exactly to that clear inner width of the U-shaped ends of the tie rods 5, so that the tie rods 5 when their pins 11, 12 in the Recesses 14, 15 are engaged in all respects are. This refers to the radial position of the formed Ends with respect to the coil axis 22 and on their rotational position based on the longitudinal axis of the tension element 6. The fixing 11, 12 with a screwdriver, the coil 1 again be disassembled.

The plastic coil 2⊘ shown in Fig.3 and Fig.4 comprises two flanges 19, only one of which is shown, one Core 35 and tie rod 21, which the flanges 19 and the core 35 in the shape that shapes the coil. The tie rod 21 has a central one that extends across the entire length of the coil Section and a right-angled bend at both ends End portion 25, which is in a pocket in the flange 19 in extends radially outward from the coil axis 36. A hole 48 below the angled end 25 of the tie rod 21 is by a plug 18 after completion of the assembly been closed. This makes the tie rod more radial Direction, based on the coil axis 36 fixed. to Securing the rotational position of the tie rod 21 are two projections 16, 17 radially outside the hole 48 with the plug 18th provided that the bent end 25 of the tie rod between to lock myself in.

The plywood spool shown in Fig.5 and Fig.6 consists of two flanges 26, which have a core 27 in the known arrangement enclose between them and by tie rods 29 be held together. The core 27 is centered via a support disk 28, the flanges 26 and Supporting rounds in the core area have congruent openings 34, which are dimensioned so that the bent ends 3⊘ of the tie rods 29 in the direction of the longitudinal axis of the coil and the parallel longitudinal axis of the tie rod 29 are push-through. The ends 3⊘ of the tie rod 29 extend in the radial direction with respect to the central bore 33 in the middle of the coil. The free ends of the bent end sections 3⊘ are with molded and through a further bending process stub-shaped formed in the circumferential direction of the coil Provide pin 31. Both the end sections 3⊘ and stub-shaped pins 31 are at least partially in shape, of the end portions and their stub-like pins 31 adapted recesses 32 embedded in the flange 26. By the fit of the recess 32 is the complete tie rod 29 its end portions 3⊘ and its stub-shaped pin 31st fixed without degree of freedom, related to the coil.

7 shows a tie rod 39, in particular for a wooden spool shown that at the transition of the central train section to the section in the flange plane with sharp edges bent end portions 37 carries the inside Complete bent pin 4⊘. In structure and mode of operation the tie rod 39 corresponds to the tie rod 6 from FIG. 1. The A special feature of the tie rod 39 is a rectangular cross section 38. The end portions 37 and the pin 4⊘ are on the Broad sides of the rectangular cross section curved. To the supporting Place on the - not shown here - flange of the coil the cross section with its wide flat side 49.

In the embodiment of the tie rod 42 according to FIG. 8 for a Wooden spool is the starting material of a round wire, like from the sectional view at 45 can be seen. The tie rod 42 corresponds to the tie rod 5 in Fig.1. Only the one is shown left section of the tie rod in Fig. 1. The round wire with the at 45 shown profile extends almost to the entire length of the coil (not shown) inside. In its outer area with the angled end section 43 and the stub 46 formed on it and bent again the round material is flattened, as from the Cross-sectional view at 44 and lies with his Flat side 47 on and in the flange to the surface pressure between tie rod and flange and reduce the forces required to bend the bent ends of the To lower tie rods.

The end sections 7, 8, 37 and 43 are of their length and Cross-sectional dimensioning designed so that it around protruding dimension of the stub-shaped pin 11, 12, 4⊘, 46 of Hand - if necessary be bent up elastically with a tool can and to complete the assembly of the tie rods and after Loosen the bend elastically in a recess 14, 15 Spring back (Fig.1) in the coil flange. The same applies to the end portions 25 in Fig.3 and Fig.4 and for the End section 3⊘ in Fig.5 and Fig.6.

In Fig.9, a circular flange 5⊘ is shown, which in has a central bore 51 in its center. At 52 she is Arrangement of the core - not shown here - dashed indicated, since the arrangement of the holes only in relation to the Location of the core can be seen. In the flange 5⊘ are three pairs 53, 54, 55 of holes shown, the holes of a pair essentially enclose the core face between them. Each pair of holes 53, 54, 55 is used for receiving and anchoring one end of a tie rod on the flange. Preferably there are three Tie rods are provided per spool.

9 shows three different configurations of the Hole pairs 53, 54, 55, only to avoid repetitions are shown on a single flange. In practice there are three same pairs of holes provided that are even on the flange are distributed.

All pairs of holes consist of an opening 58, 6⊘, 63 of the flange 5⊘ through which the ends of the tie rods be inserted and a hook hole 59, 61, 64, in which the Stub at the ends of the tie rods to complete the assembly be hung up. All openings 58, 6⊘, 63 protrude a short section into the assembly 52 of the core, but are essentially - in the view shown in Fig.9 - Arranged within the core area.

The opening 58 is in the form of a walking stick, which projects with its “handle” into the arrangement area 52 of the core and, with an inspection and guide extension 68, facilitates the passage of the end of the tie rod through the opening 58. The tie rod can be guided with a pair of pointed pliers or a hook and pulled through the opening and inserted with its stub into the hook hole 59.
The grip area of the walking stick has a latching seat 56 and a latching nose 57, on which an end region of the central section of a tie rod is supported temporarily — latching nose 57 — and finally — latching seat 56. The tie rod made of round wire nestles into the rest seat 56 with its circumference. The hook hole 59 and the detent seat 56 lie one behind the other in the radial alignment in the flange. The straight section 67 of the opening 58 extends almost in the radial direction. The opening 58 allows the entire end of the tie rod to be pulled through the flange. The hook hole 59 is designed as a through hole. The same flanges can be used on both sides of the core.

The pair of holes 54 consists of a circular segment Opening 6⊘, which has a clamping point 62 with its longitudinal center forms and there the intended arrangement 52 of the core cuts and with their ends in the projection of the Core interior lies. The opening is 6⊘ mirror image of a radius through the hook hole 61 educated. In the assembled position, the tie rod is with its middle section at the nip 62 through the reveal the opening 6⊘ and slightly at this point bulged core clamped. This creates a centering of the core with its prestress.

The pair of holes 55 consists of a hook hole 64 and one Opening 63, which is also a mirror image of a radius is formed by the hook hole 64, such as the opening 6⊘ of hole pair 54. It has on the radius through the hook hole 64 a rest seat, which is delimited on both sides by locking lugs 66. The opening 63 also cuts the core arrangement 52, so that the tie rod, when installed, shears in its Rest seat 65 between this and the core inner wall is clamped.

All variations of pairs of holes have in common that the The ends of the tie rods are supported twice on the flange. On the one hand, all hook holes 59, 61, 64 form a first one Support in the radial direction for the respective tie rod and on the other hand, the rest seats 56 and 65 form the Clamping point 62 is the second support for the tie rod. Also if, due to tolerances, the tie rod does not move from is evenly in front at both contact points, so is but ensured that at high loads, so at least before breaking, due to slight deformations of the wood or plastic existing flanges in time Training double plant.

Form all the features described or illustrated for yourself or in any meaningful combination Subject of the invention, regardless of its Summary in the claims or their relationship.

Claims (10)

Coil (1, 2⊘) with two flanges (2, 3, 19, 26) and one core (4, 27, 35)
and with tie rods (5, 21, 29, 39, 42) for fixing the flanges (2, 3, 19, 26) and the core (4, 27, 35) in the arrangement relevant for the coil shape,
the tie rods (5, 21, 29, 39, 42) are inserted through holes (9, 1⊘, 34, 48) in the flanges (2, 3, 19, 26),
with at least one shaped end (7, 8, 25, 3 25, 37, 43) on the tie rod (5, 21, 29, 39, 42), which projects radially from the central section (6, 41) of the tie rod,
characterized in that
two shaped ends (7, 8, 37) of the unmounted tie rods (5, 21, 29, 39, 42) are provided and
the holes (9, 1⊘, 34) in at least one flange (2, 3, 19, 26) are so large that the associated, deformed ends (7, 8, 25, 3⊘, 37, 43) in the longitudinal direction of the Tie rods (5, 21, 29, 39, 42) can be pushed through,
and by means (11, 12, 16, 17, 18, 31, 4⊘, 46, 59, 61, 64) for fixing at least one with a radially projecting section (7, 8, 25, 3⊘, 37, 43) molded end of the tie rods (5, 21, 29, 39, 42) in the flange plane in the fully assembled arrangement. Coil (1) according to claim 1, characterized in that both end portions (7, 8, 25, 30, 37, 43) of the tie rods (5, 21, 29, 39, 42) radially projecting in the flange plane are formed by bending. Coil (1, 2⊘) according to claim 1 or 2, characterized in that the means (11, 12, 16, 17, 18, 31, 4⊘, 46) for fixing the at least one end formed with the radially projecting section are formed by a further stub-shaped bend in the free end of the tie rod (5, 21, 29, 39, 42), which has a recess (14, 15, 32, 59, 61, 64) in or a projection (16, 17) on the outside on the flange (2, 3, 19, 26). Coil (20) according to one of the preceding claims, characterized by at least one stopper (18) as part of the fixing means, with which, after mounting the tie rods (21) remaining hole sections in the flanges (19), the tie rods (21) in the hole (48) can be fixed. Coil (1) according to claim 3, characterized in that the second bend of the tie rod (11, 12, 4⊘, 46) points into the winding space (25) of the coil (1) and into a hole (14, 15, 59, 61, 64) immersed in a flange wall (2, 3, 5⊘). Coil (1) according to claim 3 or claim 5, characterized in that both ends (7, 8, 37) of the tie rods (5, 39) are bent twice and the outermost bent sections (11, 12, 4⊘) into the flange wall Immerse (2, 3). Coil according to one of the preceding claims, characterized in that the tie rods (39, 42) have a flat longitudinal side (47, 49). Coil according to one of the preceding claims, characterized in that at least one tie rod is fixed in a detent seat (56, 65) between the core and through-opening (58, 63) in the flange (5⊘) or between core (52) and through-opening (58, 63) is jammed. Tie rod (39) for a spool according to one of the preceding claims, characterized in that both ends (37) are bent one or two times, approximately at right angles. Flange (5⊘) for a coil according to one of the preceding coil claims and for a tie rod according to the preceding claim, characterized in that it (5⊘) has two holes (58, 59; 6⊘, 61; 63, 64) for each tie rod has, one (58, 6⊘, 63) for pushing through the tie rod end and one (59, 61, 64) for hooking the stub at the free end of the tie rod end.

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