Multispool cabinet for winding a filament onto a transport spool and buffer spool for same

Abstract

The subject matter of the invention is a manual multispool cabinet for winding a number of filaments (40, 40a) onto a respective removable transport spool (14, 14a) having a driven main winding shaft (10, 10a) per transport spool (14, 14a), wherein the main winding shaft (10, 10a) is formed for an exactly fitting reception of the transport spool (14, 14a, 214), and wherein the main winding shaft (10, 10a) drives the transport spool (14, 14a). Providing such a manual multispool cabinet that has such an increased filament speed is achieved in that, in addition to the transport spool (14, 14a), a buffer spool (12, 12a) is held on the main winding shaft (10, 10a).

Claims

1. A buffer spool (12, 12a, 112, 212) for affixing to a manual multispool cabinet and for receiving a filament (40, 40a) comprising: a spool core (16, 116, 216); a side wall (18, 318) bounding the spool core (16, 116, 216) toward the multispool cabinet; a spool wall (20) bounding the spool core (16, 116, 216) toward a transport spool (14, 14a, 214); and, a catching device (28, 28a, 128) for capturing the filament (40, 40a) characterized in that the catching device (28, 28a, 128) has a peripheral safety shoulder (32, 132) that is arranged at the radially outer margin of the catching device (28, 28a, 128), and in that a peripheral annular groove (34, 134) is formed between the safety shoulder (32, 132) and a catching surface (30, 130).

2. The buffer spool (12, 12a, 112, 212) of claim 1, characterized in that the catching surface (30, 130) of the catching device (28, 28a, 128) radially adjoins the side wall (18, 318) in an inclined manner and runs around the side wall (18, 318) for capturing the filament (40, 40a) and for conducting the filament (40, 40a) onward to the spool core (16, 116, 216); and/or in that the catching surface (30, 130) of the catching device (28, 28a, 128) radially adjoins the spool wall (20, 320) in an inclined manner and runs around the spool wall (20, 320) for capturing the filament (40, 40a) and for conducting the filament (40, 40a) onward to the spool core (16, 116, 216); and in that the catching surface (30, 130) is arranged facing away from the spool core (16, 116, 216) in an inclined manner.

3. The buffer spool (12, 12a, 112, 212) of claim 1, characterized in that a radially outer margin of the catching device (28, 128) reaches up to and over a part of the transport spool (14, 14a, 214).

4. The buffer spool (12, 12a, 112, 212) of claim 1, characterized in that the side wall (18, 318) and/or the spool wall (20) is/are formed in a manner fully or partially inclined away from the spool core (16, 116, 216) to capture the filament (40, 40a).

5. The buffer spool (12, 12a, 112, 212) of claim 1, characterized in that the spool core (216) tapers conically toward the transport spool (214).

6. The buffer spool (12, 12a, 112, 212) of claim 1, characterized in that the catching surface (30, 130) runs around the entire circumference of the side wall (18, 318) and/or runs arounds the entire circumference of the spool wall (20, 320).

7. A manual multispool cabinet for winding a filament (40, 40a), comprising: a removable transport spool (14, 14a, 214) configured to receive the filament (40,40a); a driven main winding shaft (10, l0a) configured for an exactly fitting reception of the transport spool (14, 14a, 214), and wherein the main winding shaft (10, l0a) drives the transport spool (14, 14a, 214); and, a buffer spool (12, 12a, 112, 212) held on the main winding shaft (10, l0a), the buffer spool (12, 12a, 112, 212) including, a spool core (16, 116, 216); a side wall (18, 318) bounding the spool core (16, 116, 216) toward the multispool cabinet; a spool wall (20) bounding the spool core (16, 116, 216) toward the transport spool (14, 14a, 214); and, a catching device (28, 28a, 128) for capturing the filament (40, 40a) characterized in that the buffer spool (12, 112, 212) is driven independently of the main winding shaft (10a, 10b).

8. The multispool cabinet of claim 7, characterized in that the buffer spool (12, 12a, 112, 212) is held in a freely running manner on the main winding shaft (10, 10a).

9. The multispool cabinet of claim 7, characterized in that the buffer spool (12, 12a, 112, 212) is driven via its own electric drive (36) with the electric drive (36) being operatively connected to a belt pulley (22) affixed to the buffer spool (12, 12a, 112, 212) via a belt (38).

10. The multispool cabinet of claim 7 characterized in that the catching device (28, 28a, 128) has a catching surface (30, 130) radially adjoining the side wall (18, 318) in an inclined manner and running around the side wall (18, 318) for capturing the filament (40, 40a) and for conducting the filament (40, 40a) onward to the spool core (16, 116, 216) and/or in that the catching device (28, 28a, 128) has a catching surface (30, 130) radially adjoining the spool wall (20, 320) in an inclined manner and running around the spool wall (20, 320) for capturing the filament (40, 40a) and for conducting the filament (40, 40a) onward to the spool core (16, 116, 216).

11. The multispool cabinet of claim 10 characterized in that the catching surface (30, 130) extends between the side wall (18, 318) and the spool core (16, 116, 216) at a constant angle and/or extends between the spool wall (20, 320) and the spool core (16, 116, 216) at a constant angle.

12. The multispool cabinet of claim of claim 11, characterized in that the catching surface (30, 130) runs around the entire circumference of the side wall (18, 318) and/or runs arounds the entire circumference of the spool wall (20, 320).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is an exploded representation of a part of a multispool cabinet in accordance with the invention having a main drive shaft and a transport spool held thereat as well as a first embodiment of a buffer spool in accordance with the invention held thereat;

(2) FIG. 1a is a detailed enlargement of the buffer spool in accordance with FIG. 1 corresponding to the line Ia in FIG. 1;

(3) FIG. 2 is a plan view of two adjacent transport spools of the multispool cabinet in accordance with FIG. 1, each having a buffer spool in accordance with FIG. 1. in a state of rest;

(4) FIG. 3a is a plan view of two adjacent transport spools of the multispool cabinet in accordance with FIG. 1, each having a buffer spool in accordance with FIG. 1, in the operating state at a first point in time;

(5) FIG. 3b is a plan view of two adjacent transport spools of the multispool cabinet in accordance with FIG. 1, each having a buffer spool in accordance with FIG. 1, in the operating state at a second point in time;

(6) FIG. 3c is a plan view of two adjacent transport spools of the multispool cabinet in accordance with FIG. 1, each having a buffer spool in accordance with FIG. 1, in the operating state at a third point in time;

(7) FIG. 3d is a plan view of two adjacent transport spools of the multispool cabinet in accordance with FIG. 1, each having a buffer spool in accordance with FIG. 1, in the operating state at a fourth point in time;

(8) FIG. 4 is an exploded representation of a part of a multispool cabinet in accordance with the invention having a main drive shaft and a transport spool held thereat, and a second embodiment of a buffer spool in accordance with the invention held thereat;

(9) FIG. 5 is an exploded representation of a part of a multispool cabinet in accordance with the invention having a main drive shaft and a transport spool held thereat, and a third embodiment of a buffer spool in accordance with the invention held thereat.

DETAILED DESCRIPTION OF THE INVENTION

(10) FIG. 1 shows a part of a manual multispool cabinet for winding a number of filaments onto a respective transport spool, wherein a main winding shaft 10, a buffer spool 12 affixable to the main winding shaft 10, and a transport spool 14 driven by the main winding shaft 10 are shown in FIG. 1. It is understood that up to 100 such main winding shafts having buffer spools 12 and transport spools 14 to be received thereat are present at such a multispool cabinet.

(11) The first embodiment of a buffer spool 12 in accordance with the invention shown in FIG. 1 comprises a spool core 16, a radially projecting side wall 18 bounding the spool core 16 toward the multispool cabinet, a radially projecting spool wall 20 bounding the spool core 16 toward the transport spool 14, and a belt pulley 22 fixedly affixed to the buffer spool 12 to receive a belt of an electric drive. The buffer spool 12 has different roller element bearings in its interior (not shown here) so that the buffer spool 12 is seated in a freely running manner on the main winding shaft 10. The main winding shaft 10 is designed as so long that, in addition to the buffer spool 12, the transport spool 14 can also be held with an exact fit and reliably on the main winding shaft 10. The transport spool 14 here comprises a transport spool core 24 for receiving the filament that is bounded by a right hand and a left hand radially projecting transport spool side wall 26a, 26b.

(12) A catching device 28 that has a peripheral catching surface 30, a peripheral safety shoulder 32, and a peripheral annular groove 34 is provided at the side wall 18 of the buffer spool 12. The catching surface 30 radially adjoins the side wall 18 at the radially outer margin in an inclined manner and is arranged inclined away from the spool core 16 in an axial direction, with the angle to the longitudinal axis of the main winding shaft 10 amounting to between 20° and 45°, preferably 30°. A peripheral annular groove 34 is formed at the free end of the catching surface 30, as can be easily recognized in FIG. 1a. A peripheral safety shoulder 32 adjoins the radial free end of the annular groove 34.

(13) In the embodiment shown in FIG. 1 here, such a catching device 38 of the same design is also provided at the spool wall 20.

(14) FIG. 2 shows a part of the multi spool cabinet having two main winding shafts 10, 10a arranged next to one another and buffer spools 12, 12a and transport spools 14, 14a placed thereon. As can be easily recognized here, the buffer spool 12 held in a freely running manner on the main winding shaft 10 is driven by a separate electric drive 36, with the electric drive 36 being connected to the buffer spool 12 via a belt 38 seated in the belt pulley 22. The same applies analogously to the buffer spool 12a.

(15) As can in particular be recognized in FIGS. 1 and 2, the side wall 18 with the catching device 28 affixed thereto is somewhat larger than the spool wall 20 with the catching device 28a affixed thereto.

(16) As can in particular be easily recognized in FIG. 2, the catching device 28a of the spool wall 20 reaches considerably up to and over the transport spool side wall 26a of the transport spool 24 so that the gap between the buffer spool 12 and the transport spool 14 is covered hereby.

(17) As can be easily recognized in FIGS. 1 and 2, and in particular in FIG. 1a, the safety shoulder 32 is designed as a peripheral thickened portion and should thus prevent injury to the operator or an accidental cutting of the filament.

(18) The peripheral annular groove 34 of the catching device 28 should prevent filaments located on the catching surface 30 from moving away from the buffer spool 12. As soon as these filaments arrive at the annular groove 34, they are stopped accordingly. The catching surface 30 inclined by between 20° and 45°, preferably 30°, with respect to the longitudinal axis of the main winding shaft 10 should have the effect that a filament impinging thereon is conducted toward the spool core 16.

(19) Such a change of the transport spool will be described in detail as follows in the following in FIGS. 3a to 3d:

(20) Two main winding shafts 10 and 10a arranged in parallel are shown in FIGS. 3a to 3d, wherein, as can be recognized in FIG. 3a, the main winding shaft 10 carries an already full transport spool 14 while the transport spool 14a of the main winding shaft 10a had only been recently changed and only comprises a small amount of filament 40a. An operator now moves in and switches the electric drive 36 on so that the buffer spool 12 starts to rotate. In this respect, the speed of the buffer spool 12 is set in dependence on the degree of filling such that the filament 40 can be received at the current feed speed. As soon as the desired speed has been reached, the operator grasps the filament 40 and conducts it to the buffer spool 12 while the transport spool 14 continues to rotate at a different speed. The filament 40 can here reach a feed speed of up to 800 m/min.

(21) As can be seen from FIG. 3b, the filament 40 is from now on wound onto the buffer spool 12. Once the filament 40 has been cut in the region of the transport spool 14, the transport spool 14 can be removed from the main winding shaft 10 and can be replaced by an empty transport spool 14, as can be recognized in FIG. 3c. The parallel transport spool 14a on the main winding shaft 10a remains unaffected by this and continues to receive a different filament 40a in the customary manner at a speed of up to 800 m/min. The operator subsequently conducts the filament 40 from the buffer spool 12 onto the empty transport spool 14 and subsequently cuts the filament 40 so that the filament 40 is wound on the transport spool 14 in the customary manner. During this procedure, some of the filament 40 is wound onto the buffer spool 12 and remains there. After the completed change of the transport spool 14, the electric drive 36 is switched off as soon as the buffer spool 12 does not permanently rotate along.

(22) The buffer spool 12 is designed such that approximately 30 to 80 transport spool changes can be carried out before the buffer spool 12 is full and has to be emptied itself. This entire procedure takes place in ongoing operation, with the filament 40 being wound onto the transport spool 14 at a speed of up to 800 m/min.

(23) A second embodiment of a buffer spool 112 is shown in FIG. 4 in which a side wall and a spool wall were dispensed with and wherein the catching device 128 is arranged directly radially projecting from the spool core 116 and is inclined away from the spool core 116. In this embodiment, the catching devices 128 are both formed the same and likewise have a catching surface 130, a safety shoulder 132, and an annular groove 134. To avoid repetition, reference is made in full to the catching device 28 in accordance with FIGS. 1 and 2.

(24) A third embodiment of a buffer spool 212 in accordance with the invention is shown in FIG. 5 that, with the exception of the spool core 216 is identical to the first embodiment of the buffer spool 12 shown in FIGS. 1 and 2. Unlike the buffer spool 12, the spool core 216 of the buffer spool 212 tapers conically, with the narrow end being formed toward the transport spool 214.

REFERENCE NUMERAL LIST

(25) 10, 10a main winding shaft 12, 12a, 112, 212 buffer spool 14, 14a, 214 transport spool 16, 116, 216 spool core side wall spool wall belt pulley transport spool core 26a, 26b transport spool side wall 28, 28a, 128 catching device 30, 130 catching surface 32, 132 safety shoulder 34, 134 annular groove 36 electric drive 38 belt 40, 40a filament