DE2057943A1 - Device for pulling strand material from a drawing drum and straightening wire rod, for example - Google Patents

Description

_Si

Kalmedie & Co. November 23, 1970

Maschinenfabrik GmbH _Pat . _Abt .Koe / Bch Dusseldorf _{Aktß H} ^

Patents accepted

Device for pulling strand material from a drawing drum and straightening wire rod, for example.

The invention relates to a device for pulling strands from a drawing drum and <Straightening of, for example, wire rod, the beginning of which is automatically shifted to a pair of driving rollers Directional triangle introduced and then directed to a downstream processing or processing machine is fed.

The aim of the invention is »to design the device in this way and to arrange that even with high-strength material with a relatively large diameter, for example from 10 mm upwards, the front end can be easily converted into a pair of driving rollers by the operator one set and then automatically one downstream straightening unit can be fed.

In the industry for the treatment and processing of 3-strand goods such as wire or pipes os has long known to link several types of machine to one system so that the material is continuous can be subjected to several processing operations. For example, there is a plant known for the processing of wire rod, with several more between two drum drawing machines Drawing dies, a rotating cutter head for peeling the wire and a polishing and straightening machine are switched on. When processing thin wires with a correspondingly low bending stiffness the operator will be able to run the front end of the first off the pulling drum-

- 2 .209824 / 0264 BAD ORIGINAL

L'almedie & Co. 23 * November 1970.

Maschinenfabrik G.m.b.H. Pat.Abt.Koe / Bch

Dusseldorf

Patent application

the winding in "the following drawing die resp. into the clamp of the downstream reel (U.S. Patent 2,394,381).

When processing wires with high bending stiffness and a correspondingly large diameter, that is However, straightening the beginning of the wire is very difficult and difficult.

Around rigid and therefore difficult to handle rolled material rolled up into wire coils from a pay-off reel to be able to pull off and automatically introduce into a pair of driving rollers, it has been proposed to use a to use mechanically clamping gripper, which has both one for aligning the wire end in the plug-in Direction serving rotary movement as well as a subsequent lifting movement in the pushing direction executes. Around the JUinkleninen of the wire end in the gripper mouth To be able to be made possible by the operator at all, a must above the gripper mechanical cable pull for inserting the wire end are provided. Another disadvantage is that the wire end after being inserted into the drive rollers is only insufficiently straight, because a judging party at Passage of the wire through the drive rollers, i.e. a deformation of the wire up to the plastic. Area is not possible.-Such pre-bent wire ends or such bent wires are for use in a downstream peeling machine, e.g. only conditionally suitable because it is insufficiently are aligned and thus the desired diameter

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209824/0264 ^BAD

»52

iialmedie & Co * 23 "November 1970"

Maschinenfabrik G.m.b.H * Pat.Abt.Koe / Bch

Düsseldorf file 11 60 patent application

Tolerances can only be achieved if, viewed over the circumference of the wire, the machining is uneven (DAS 1 148

To avoid the above Kachteile is "starting from a device having a pair of driving rollers, proposed according to the invention, the Ereitaföl · len in a known manner directly nachsuordnen and to dispose the drive rollers and the guide rollers on a common pivotable in a vertical plane frame a Richtaggreßat · To When the beginning of the wire is automatically guided into the alignment triangle downstream of the drive rollers, the common Bohemia for the drive and sighting rollers is pivoted into such a position by a double-acting piston, <3. _a the wire beginning at slow rotation of the drum ß in a large arc to the ventilated traction rollers add moved, because the radius of curvature of this arc due to the elastic spring-back is always substantially larger than the radius of the capstan · The operator can the wire end without the aid of any hoisting or other aids effortlessly between the ventilated drive rollers, which are then closed and driven can be fed in a directional manner

209824 / 026Λ

Malmedie & Co. 23 November 1970 '

Maschinenfabrik G.m.b.H. Pat.Abt.Koe / Boh

^{Μ (3ββ1ά0Γί} File U 60

Patent application

Λη hand of the drawing, which in the Flg. 1 and 2 an embodiment of a device according to the JJrfindunr; shows is their structure and mode of operation explained in more detail below. the

x-'ig. 1 shows how the beginning of the wire is in a large * natural arch moved towards the drive rollers.

In

^ ¹ Xg. 2 iat shows how the wire fed by the drive rollers is then straightened and fed to the following machine

iäit 1 int the Uaachinenrahmen a pulling drum 2 denotes, through which the strand material 31, for example .Valt wire, is drawn through the drawing die 4, so that the roundness and diameter tolerance go is that in the downstream peeling machine 5 the desired target diameter can be obtained without unnecessary machining nut, v / as is the case, for example, when the wire has a certain ovality. The individual V / indungon are moved towards the outer edge when the drum 2 rotates on the ocholl edge 2a. Be gie through the cave 6, which is mounted on the double lever 7 iat, pressed firmly against the drum shell. For this Zvreck is the arm 7a of the lever 7 articulated connected to the piston rod 8 of a piston which is guided in the cylinder 9. At 10 iat a well-known

209824/026 4

Malmedio & Co 23 Hovetober 19? 0

Maschinenfabrik GobH Pat.Abt. Koe / Bch Düseeldorf

Patent application

te dancer roller, the support arm 10a of which is movable in a vertical plane in order to regulate the speed of the drive motor (not shown) for the drum 2 60 depending on the size of the archwire 3a, so that the sheet 3b that can be seen in Pig * 2 passes through during processing the peeling machine 5 is approximately retained. The rollers 11 serve for the lateral guidance of the end. 12 and 12a denote a pair of driving rollers which are driven by a LiOtor (not shown) guided double-acting piston can be raised and lowered. The bending triangle for the wire consists of the bending rollers 16, 17 and 18. The holder 18a of the hilt roller 18 is around the pin 19. pivotable and is moved approximately radially to the object to be straightened by a double-acting piston guided in the cylinder 20, which is articulated to the arm 18b of the holder 18a, in order to be able to press the straightening roller 18 accordingly and to be able to plastically deform the object to be straightened »Pie drive rollers 12 , 12a and the straightening rolls 16, 17 '18 are arranged on a common liahmen 21, for example, about the shaft 12b of the lower drive roller 12 is pivotally · ^1, 1' for this purpose, the frame 21 hinged to the piston rod 22 of a double acting piston ver -. bound, which is guided in the cylinder 23. The upper friction roller 12a is directly preceded by a guide roller 24, which comes to rest on the wire as soon as the frame 21 moves out of the Pig position. 1 is brought into the position of FIG.

BAD ORiGiNAL. 209824/0264 -. ,

tlalmedie & Co «23« November 197Ö

Maschinenfabrik G.m.b.H. Pat.Abt.Koe / Bcn Dusseldorf

Patent application

The operation of the device is as follows

The start of the angled wire is inserted through the drawing die 4 and from a not shown Wire drawing pliers gripped · The latter is in the middle a chain on the pulling drum <2. attached. The drive motor sets the drawing drum in slow rotating movements until about 10-20 turns of wire on the Drum have been accumulated. The drawing drum is then stopped and the wire drawing pliers with chain removed · The cover 6 prevents the windings on the drum from jumping open. · The pull drum is then set in motion again and the beginning of the wire moves after passing the dancer roll 10 towards the following machine in a wide arc. The radius of curvature of this arc is due to the elastic suspension is always much larger than the radius of the pulling drum. The drum is then initially stopped again · The beginning of the wire is closed by turning the drawing drum moves in a large arc towards the following machine until it is lifted Has reached driving rollers 12, 12a. With the help of the piston guided in the cylinder 23, the housing 21 swiveled away so that the beginning of the wire can be easily inserted by hand between the rollers 12, 12a can. The upper roller 12a is then pressed on and the drive for the cones 12, 12a is switched on * As a result, the wire is propelled from this hollow into the ventilated bending triangle 16, 17, 18. then the roller 13 is also pressed on · While now

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20982A / 026A

'tlalmedie & Co. 23 November 1970

Maschinenfabrik GabH Pat * Dept. Koe / Boh Düsseldorf
Patent application

the wire is moved from the rollers 12, 12a to the downstream machine 5 and is directed in the bending triangle 16, 17, 18, does the one in the cylinder 2? Guided pistons up the housing 21 As soon as the wire has been gripped by the pairs of driving rollers 24, 24a, 25 "25a of the subsequent machine 3 ", the roller 12a is lifted because these driving rollers now feed the wire through the knife circle of the rotating knife head (not shown) the peeling machine 5 take over

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209824/0264

Claims (1)

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Claim Device for pulling strands from a drawing drum and straightening belspielsv / eise Wire rod, the beginning of which is automatically inserted into a pair of driving rollers and then connected a subsequent processing «or /. Processing machine is fed, characterized in that the drive rollers (12, 12a) in a known manner Hichtaggregat (16, 17 »18) immediately downstream is, v / obei the driving and Hichtrolle on a common in vertical Level pivotable frame (21) are arranged. 209824/0264 BAD OHlGjNAL Blank page