EP1844868B1 - Wire drawing device - Google Patents

Abstract

Wire drawing device (1) with a frame (2), and one or more disk-drum drawing units (5) driven by a drive motor (8). The frame is divided horizontally into an upper part (3) with auxiliary units, e.g. suction device, a drawing block holder (7), and a lower frame carrying the upper part of the drawing block holder.

Description

The invention relates to a wire drawing apparatus according to the features of the preamble of claim 1.

Wire drawing devices of the type in question are known, such as. From the not previously published German patent application with the file number DE 102004027716 the applicant, as well as from the DE 10215456 A1 , Next is the state of the art on the GB 697,552 A1 , the US 5,505,067 A1 and the DE 298 02 989 U1 to refer.

A both in terms of manufacturing and maintenance advantageous wire drawing apparatus is specified by the claim 1. Here, it is particularly important that the back of the wire drawing device (1) is arranged directly connected to the wire drawing device (1) interconnection unit (23), that the interconnection unit (23) is attached directly to the drawing disc upper part (3) and that the Verschaitungseinheit (23) by means of an access space (26) left carriers (25) is attached to the drawing disc upper part.

The drawing disc top with the access auxiliary devices is vorfertigbar as a whole and ultimately for final assembly of the wire drawing device on a base and put on with this attachable.

The provided below the horizontal division base preferably carries no relevant for the operation of the wire drawing device device parts. The drawing disc upper part is prefabricated modularly by the inventive design and preferably assigned to the base frame on site.

A flange-mounted drive motor for the drawing disk drum can be integrated in the drawing disk upper part, so more preferably in the form of an axially directly flanged synchronous motor. Such an arrangement is known in principle from the above-mentioned non-prepublished patent application of the Applicant, which is why at this point once again reference is made. This flanged drive motor is part of the drawing disc top part and thus part of the modular constructed upper part of the wire drawing device, although the drive motor after placement of the upper part on the undercarriage can very well extend down beyond the horizontal parting plane into the base frame. The drawing disc upper part also has a cover, to cover the drawing disc drum in the operating position. In an advantageous development of the subject invention it is provided that the drawing disc upper part has a control panel, via which the control or operation of the wire drawing device takes place.

With regard to the interconnection unit, it is not necessary, as known from the prior art, a separate control cabinet or the like. The interconnection unit can in this case comprise inverters and a control electronics including a frequency converter for the drive. The drawing disc upper part, in addition to a suction device and the drawing tool at the same time also at least one cover and a control panel and beyond a rearward interconnection unit, further the drawing disk drum is directly driven by a drive motor integrated in the upper part. The pulley top is self-sufficient in itself. The below the horizontal division of the wire drawing device to be provided subframe assumes only supporting functions. It proves to be user-friendly and easy to maintain that the interconnection unit is fastened to the drawing disk upper part by means of an access space left by carriers. The interconnection unit is therefore preferably horizontally spaced apart from the drawing disk drum area or at a rear wall covering the draw disk drum area at the rear. The left access space may well be closed with removable panels. In addition, the access space can also provide an engagement space for the tilted cover.

Fig. 1

in Vorderansicht eine Drahtziehvorrichtung in Betriebsstellung;

Fig. 2

die Ansicht gemäß der Darstellung in Fig. 1, jedoch bei aufgeschwenkten Abdeckhauben;

Fig. 3

die Seitenansicht zu der Darstellung in Fig. 2;

Fig. 4

die Draufsicht hierzu unter Fortlassung der Abdeckhauben;

Fig. 5

den vergrößerten Schnitt gemäß der Linie V-V in Fig. 4;

Fig. 6

eine perspektivische Detaildarstellung des in Fig. 4 mit dem Pfeil IV bezeichneten Bereichs.

The invention is explained in more detail below with reference to the attached drawing, which represents only one exemplary embodiment.

Fig. 1

in front view, a wire drawing device in operating position;

Fig. 2

the view as shown in Fig. 1 , but with opened covers;

Fig. 3

the side view to the representation in Fig. 2 ;

Fig. 4

the top view for this, omitting the covers;

Fig. 5

the enlarged section along the line VV in Fig. 4 ;

Fig. 6

a detailed perspective view of the in Fig. 4 indicated by the arrow IV area.

Shown and described is first with reference to Fig. 1 a wire drawing device 1 in the manner of a straight drawing machine, which initially has a machine frame 2. This is divided horizontally, which division is represented by the horizontal line H in the drawings.

The machine frame 2 is composed under the horizontal division of a drawing disc upper part 3 and a base 4, on which the latter the drawing disc upper part 3 is placed. About unillustrated fittings the drawing disc upper part 3 is connected to the base 4.

The drawing-disc upper part 3 has all the components and auxiliary access devices necessary for the function of the device, while the undercarriage 4 has only supporting functions. Thus, the drawing disc top 3 is provided with two substantially identically designed drawing stations for decreasing calibration of a wire. Accordingly, two drawing disk drums 5 are provided, which are arranged one behind the other in the direction of wire drawing r. In this case, each drawing disk drum 5 in the direction of wire drawing r is aligned inclined, this about including an inclination angle of about 15 ° to the horizontal. According to the drawing disc drums 5 bearing inclined plane and the each disc pulley 5 associated soap boxes 6 and Ziehsteinhalterungen 7 are inclined.

Each drawing disk drum 5 has a drive motor 8. This is arranged below the drawing disk drum 5 bearing, inclined machine bed 9. The drive motor 8 is flanged and acts directly on the associated pulley drum 5 a. The drive motor 8 continuously sets the drawing disk drum 5 in rotation or brakes it, wherein the rotation takes place about a geometric axis xx, which is aligned perpendicular to the inclined machine bed 9.

The two pulley drum drive motors 8 are designed as electric synchronous motors. They are gearless with the associated pulley drum 5 is connected.

Each drawing disk drum 5 is surrounded by a pulling disk chamber 11 which is open towards the access side 10. This is essentially composed of two side walls 12 and a rear wall 13, which latter is assigned to the rear side 14 of the wire drawing device 1 opposite the access side 10. Rear wall 13 and side walls 12 are arranged vertically aligned edge on the machine base 9 carrying the drawing disk drum 5.

The side walls 12 are further provided with a respective open-edged recess 15. This is open both to the access-side edge and to the upward-facing edge.

The drawing disk chambers 11 are coverable, to which each chamber 11 is assigned a cover 16. This is pivotable near the upper edge region of the rear wall 13 about an axis y parallel to the rear wall foot line extending axis y. Each cover 16 has a ceiling portion 17 and an access side 10 facing end wall portion 18. Ceiling portion 17 and end wall portion 18 are in this case arranged at a right angle to each other. In the closed position of each cover 16 of the ceiling portion 17 rests on the upwardly facing edges of the chamber-side side walls 12, while the end wall portion 18 enters the inside wall against the associated end faces of the side walls 12 and the machine bed 9. In the closed position the cover 16, the drawing disc chamber 11 is closed except for the lateral recesses 15.

The two cover hoods 16 or the drawing disk chambers 11 to be covered thereby are spaced apart from one another; leave correspondingly between them a free space 19. In this space 19, a control panel 20 is arranged, which is accessible even with closed covers 16. This control panel 20 is used to control the downstream in drawing direction r drawing pulley, so for example. In the illustration in Fig. 2 the right. The direction in Drahtziehrichtung r this control panel 20 in the free space 19 Ziehscheibentrommel 5 is about another control panel 20 ', which as shown in FIG Fig. 2 Left side of the drawing disk drum 5 is arranged, controllable. The latter is basically also arranged in a space left between two covers 16 19 'provided that the illustrated, two pulley stations having module is coordinated with another equal configured module.

As can be seen from the illustrations, the cover 16 closes the example. In Fig. 2 right die disk drum 5 almost flush with the facing outer wall of the machine frame 2, while the cover 16 of the left wheel pulley 5 is set back to the facing outer wall of the machine frame 2, to create an open-edge space 19 'for the control panel 20'.

Through the space 19 and 19 'also extends the soap box 6 of the wire drawing direction r downstream drawing disk drum 5, whereby this soap box 6 is freely accessible in the closed position of the covers 16 for constant control. The attached to the soap box 6 via a holder 21, in wire drawing direction r upstream guide and sensing rollers 22 extend, the facing recess 15 of the chamber side wall 12 passing through within the drawing disk chamber 11 of the pulling disk drum 5 upstream in the wire drawing direction r.

By contrast, the drawing die holder 7 arranged downstream of the soap box 6 in the drawing direction is not accessible in a closed position of the covering hood 16; is accordingly arranged in the hood closure area.

On the back 14 of the wire drawing device 1 each station assigned directly to the drawing disc upper part 3 attached interconnection units 23 are provided. Each unit is arranged in a control box 24, which is fixed by means of carrier 25 on the drawing disc upper part 3. The carrier 25 are hereby dimensioned in length so that an access space 26 is left between the control box 24 and the drawing disk upper part 3. This may, although not shown, be closed on all sides by means of preferably removable walls. The access space 26 also serves as an engagement space for sections of the swung-cover 16 (see. Fig. 3 ).

The interconnection unit 23 hereby includes u. a. all supply lines for the upper part 3, as well as a control electronics including a frequency converter for the drive.

The drawing disc upper part 3 in the illustrated embodiment essentially comprises two drawing disk drums 5, two soap boxes 6, two drawing stone holders 7, two drive motors 8 acting directly on the drawing disk drums, two drawing disk chambers 11, two covering hoods 16 and two control panels 20, two interconnecting units 23 and two each associated with a drawing disk drum 5, hereinafter described in more detail dust extractors. Accordingly, the drawing disc upper part 3 all necessary for the function of the wire drawing device 1 components or access auxiliary devices, further these components or access auxiliary devices are arranged substantially above the horizontal division of the machine frame 2. Only the drive motors 8 pass through this horizontal plane and dive into the base 4 partially.

Each drawing disk drum 5 is assigned a suction channel 27 at the foot in the region of the drawing disk chamber 11 which comprises the drum. This is formed within the inclined machine bed 9 and surrounds the drawing disk drum 5 by about three quarters of its circumference. With reference to the top view in FIG Fig. 4 an end 28 of the annular portion-shaped suction channel 27 is formed near the die holder 7, from where the suction channel 27 further with respect to the top view in FIG Fig. 4 extends in the clockwise direction by about 270 ° the drawing disk drum 5 foot side. The other end of the suction channel 27 is provided with the reference numeral 29. The negative pressure in the suction passage 27 blower unit is not shown in detail, but is also preferably part of the drawing disc upper part. 3

The suction channel 27 has in a cross section as shown in FIG Fig. 5 a radially inward, ie in the direction of the drawing disk drum 5 facing angled wall 30. This is composed of a transversely to the drum axis x aligned bottom portion 31 and with this an obtuse angle of about 120 ° enclosing side wall 32nd

The suction channel 27 is open to the annular groove the drawing disk drum 5 on the foot side largely surrounding collecting channel 33, for which purpose 32 suction openings 34 are provided in the angle connection between the bottom portion 31 and side wall. There is a plurality of such suction openings 34 provided with uniform spacing over the entire circumference of the suction channel 27 (see. Fig. 6 ).

The drawing-disk drum 5 forms on the foot side a centrifugal edge 35 bounding the collecting space 33 radially inward. This is formed in the region of a thickened base edge of the drum wall 36, wherein this thickened base portion 37 radially outwardly a substantially the Schleuderrand 35 ausformender, collar-like slinger 38 is assigned. This slinger 38 is fixed by screws to the base portion 37 of the drawing disk drum 5.

The slinger edge 35 extends at an acute angle of about 60 ° to a parallel of the drum axis x, starting from the drum wall 36, starting radially sloping down to a free end, which is aligned at the height level of the bottom portion 31 of the angled suction channel wall 30 , Between this free end and the suction channel wall remains a free rotation of the drawing disk drum 5 enabling, small sized annular gap 39th

The radial projection a of the centrifugal edge 35, starting from the drum wall 36, corresponds in the illustrated embodiment to approximately one quarter of the radius b of the drawing disc drum 5 in the region of the drum wall 36.

Due to the arrangement of the prescribed centrifugal edge 35, the dust or the resulting drawing powder formed during wire drawing is thrown in a targeted manner in the direction of the suction openings 34, via which suction transport then takes place.

Claims (4)

1. Wire-drawing apparatus (1) with one or more drawing disk drums (5) and in each case an associated drawing disk drum drive motor (8), the wire-drawing apparatus (1) having a machine frame (2), which consists, in a horizontally divided manner, of a drawing disk upper part (3) with access assisting devices, such as a suction extraction device and a drawing die mount (7), and also a lower part (4), on which the drawing disk upper part (3) is mounted, the drawing disk drums (5) also being secured to the associated drive motors (8) on the drawing disk upper part (3), characterized in that an interconnecting unit (23) that is connected directly to the wire-drawing apparatus (1) is disposed on the rear side of the wire-drawing apparatus (1), that the interconnecting unit (23) is secured directly to the drawing disk upper part (3), and that the interconnecting unit (23) is secured to the drawing disk upper part by means of carriers (25) which leave an access space (26).
2. Wire-drawing apparatus according to Claim 1, characterized in that a flanged-on drive motor (8) for the drawing disk drum (5) is integrated in the drawing disk upper part (3).
3. Wire-drawing apparatus according to either of the preceding claims, characterized in that the drawing disk upper part (3) has a covering hood (16).
4. Wire-drawing apparatus according to any of the preceding claims, characterized in that the drawing disk upper part (3) has an operating console (20).

Images