DE202014011283U1 - Plant for galvanizing a strip - Google Patents

Abstract

An apparatus (10) for continuously plating a portion of a belt (12) having an unwinding station (14) from which the unalloyed belt (12) is unwindable and feedable to a first plating station (16) and to a powered windup station (18) in which the galvanized tape (12) is windable, and a control device (20), the first electroplating station (16) comprising:
- A circular, horizontally mounted support means (22) which is rotatable about a vertical axis and on the outer edge (28), the band (30) is durable, so that the area to be electroplated (38) protrudes downward
- An endless drive belt (12) that rests over a part of the circumference of the outer edge (28) and the band (30) is held between the outer edge (28) and the drive belt (30) and is thereby conveyed in the circumferential direction,
a drive (35) for rotating the mounting device (22),
- Electroplating baths (42) which are distributed over part of the circumference of the support means (22) and arranged below the support means (22), so that the area to be electroplated (38) of the belt (12) through the baths (42) conveyed through and where it can be electroplated, wherein the unwinding station can be driven and the drive of the unwinding station can be adapted in its speed to the drive speed of the mounting device via a first speed adjustment device, characterized in that at least one of the electroplating baths (42) has a central basin (42-1) electrodes are located and through which the band (12) is conveyed to be galvanized, and that the bath 42 has an overflow basin (42-2) for collecting the electrolyte, a pumping system (42-3) and an electrical connection, wherein all components of the electroplating bath 42 are mounted on a frame (42-4) that rests on rollers (42-5) and thus one Cart forms, being at least the pelvis (42-1) and (42-2) are adjustable in height so that after lowering the electroplating bath (42) from the galvanizing station (16) is extendable and in this way the baths (42) easily replaceable are

Description

The invention relates to a system for continuously galvanizing at least a portion of a belt with an unwinding station, from which the unalloyed belt is unwound and fed to a first electroplating station and to a driven winding station in which the galvanized belt is wound, and to a control device.

Known conveyor systems, which operate continuously, ie in which the belt is continuously conveyed and during conveying the area which is suspended freely, is galvanized, have a linear structure. In an unwinding station, the belt is unwound and then conveyed by a suitable conveyor in a straight line through the electroplating baths and finally wound up again in a winding station. As a rule, the drive takes place in the winding station, which causes the drive by train to the belt. The disadvantage of such systems is the great length, which makes correspondingly large production halls necessary. Another disadvantage is that the leadership of the band usually only punctually and thus also unclean, which complicates a very precisely localized galvanization. The individual electroplating baths in a linear arrangement are only badly interchangeable. Since the drive is made by the winding station, the waste is very large, namely at least a full length of the entire system. This makes the galvanizing, especially of bands with short overall lengths costly.

From the EP 0 070 694 A1 is a galvanizing plant for individual workpieces known. The individual workpieces are clamped between a wheel and an endless belt resting against the outside of the wheel and conveyed by electroplating baths located on the circumference. Although such a system is space-saving, however, no tapes can be galvanized with it. In addition, only a few and smaller electroplating baths can be used, since the scope is limited. It is therefore only suitable for small workpieces that can be galvanized with few baths.

In this application, the term electroplating bath should generally mean any bath that may be necessary for a galvanic process. These are pre-treatment baths, electrolytic cells and the like.

Based on this prior art, it is an object of the invention to provide an improved galvanizing, can be galvanized with the bands and with which the aforementioned disadvantages can be avoided.

This object is achieved by a system having the features of claim 1.

• -eine kreisförmige, horizontal liegende Halterungseinrichtung, die um eine vertikale Achse rotiert und an dessen Aussenrand das Band gehalten ist, wobei der zu galvanisierende Bereich nach unten übersteht,
• -ein endloses Antriebsband, das über einen Teil des Umfangs an dem Aussenrand anliegt und das Band zwischen dem Aussenrand und dem Antriebsband rutschfest hält und dadurch in Umfangsrichtung fördert,
• -einen Antrieb zum Rotieren der Halterungseinrichtung,
• -Galvanikbäder, die über einen Teil des Umfanges der Halterung verteilt und unterhalb der Halterungseinrichtung angeordnet sind, so dass der zu galvanisierende Bereich des Bandes durch die Bäder hindurch gefördert und dort galvanisiert wird.

The inventive apparatus for continuously plating a portion of a belt comprises an unwind station from which the ungalvanized belt is unwound and fed to a first plating station and a driven winding station in which the galvanized belt is wound, and a control device. According to the invention, the first electroplating station comprises:

• a circular, horizontally-lying support device, which rotates about a vertical axis and on the outer edge of which the band is held, whereby the region to be electroplated protrudes downward,
• an endless drive belt, which rests against the outer edge over a part of the circumference and keeps the belt non-slip between the outer edge and the drive belt and thereby promotes it in the circumferential direction,
• a drive for rotating the mounting device,
• Electroplating baths, which are distributed over a part of the circumference of the holder and arranged below the mounting device, so that the region of the tape to be electroplated is conveyed through the baths and galvanized there.

An essential advantage of the invention is the relatively small space requirement, since the baths are no longer arranged in a row, but space-optimized substantially circular. A typical system according to the invention has a footprint of about 9m x 9m.

Another advantage is the low waste. This is considerably less or even completely eliminated, because if the tape is fed to the mounting device and is clamped between the outer edge and the drive belt, it can be conveyed through the electroplating baths.

This shows a further advantage, namely that the band is guided over its full length and the drive over the entire length of the part of the belt is carried out, which is located above the baths, that is clamped by the mounting device. The drive belt fulfills two functions, namely the drive and a holding function for holding the tape.

The electroplating baths arranged below the mounting device are easily accessible and can be exchanged very easily.

Since the tapes to be plated are quite long and correspondingly heavy, the unwinding station is usually driven. Then the drive speed of the plating station and unwinding should be exactly right. This can be achieved either by precise motors which are exactly the same for a long time and correspondingly expensive, or in a further development of the invention in that the drive of the unwinding station is adapted via a first speed adjustment device in its speed to the drive speed of the mounting device.

The first speed adjusting device can be designed so that it has a laterally movably arranged roller over which the unwound belt runs and which holds the belt in tension. The deflection is detected by the control device. Then, the control device can adjust the drive of the unwinding, in which is regulated to a desired deflection.

In a further development of the invention, the first electroplating station has a pretensioned feed roller for the correct feeding of the belt between the outer edge of the mounting device and the drive belt.

For the same reason why the unwinding station has a drive speed control, in a development of the invention, the rewind station also has a speed adjustment device for adapting the drive of the takeup station to the drive speed of the mounting device.

For certain electroplating tasks, five baths of a galvanizing station are often too few. The plant according to the invention can be expanded in the simplest way by simply providing a second or even third electroplating station as required. The second and further electroplating stations are identical to the first one. The tape is then passed from the first to the second and possibly to the further station.

For this purpose, it is advantageous if the second electroplating station has a further speed adjusting device, which is associated with a feed roller of the second galvanizing station and which is held biased, so that a change in the deflection is a measure of a difference in speed of the drives of the two galvanizing stations, that of the control device recorded and corrected. Thus, the drive speed of the second plating station is controlled to the speed of the first station.

It makes sense to regulate the drive speed of each additional galvanizing station that is used, in each case according to its predecessor, that is, the station which is located upstream. Overall, then the drive speed is determined by the first station.

A very space-saving and advantageous arrangement results when the electroplating baths of a galvanizing station are hexagonally arranged and form five sides of a hexagon. Then the available space can be optimally utilized and the bathrooms are still very easy to replace. On the sixth page of the hexagon, the supply and removal of the tape takes place.

For a simple replacement, it is very advantageous if each electroplating bath has an electrical connection and a coding characterizing the respective electroplating bath can be transmitted to the control device via the electrical connection. Then all information about the bathroom is directly in the control device and it can be driven directly with a specific program.

• 1 eine stark schematisierte Darstellung einer erfindungsgemäßen Anlage in der Draufsicht;
• 2 eine Ansicht eines Beispiels eines zu galvanisierenden Bandes;
• 3 eine perspektivische Ansicht eines Galvanikbades der erfindungsgemäßen Anlage;
• 4 eine schematische Darstellung wie 1 einer Ausführungsform der Anlage.

In the following the invention will be explained in detail by means of embodiments with reference to the drawing. In the drawing show:

• 1 a highly schematic representation of a system according to the invention in plan view;
• 2 a view of an example of a strip to be plated;
• 3 a perspective view of a galvanic bath of the system according to the invention;
• 4 a schematic representation like 1 an embodiment of the system.

An inventive system 10 for continuous plating of a strip 12 includes an unwinding station 14 from which the ungalvanized tape 12 unwound and a first galvanizing station 16 is supplied. The attachment 10 further comprises a powered winding station 18 in which the galvanized tape 12 is wound, and a control device 20 ,

The unwinding station 14 has a supply roll 14 - 1 on, on which the strip to be galvanized 12 stockpiled, a leadership role 14 - 2 to guide the tape correctly 12 and an unwind drive 14 - 3 on.

The first galvanizing station 16 includes a circular, horizontally mounted mounting device 22 , In the illustrated embodiment there is the mounting device 22 from a metal ring 24 that about holding rolls 26 is held. The ring 24 can rotate about a vertical axis in the horizontal plane. The ring 24 For example, it is made of stainless steel.

The ring 24 is through an endless drive belt 30 driven. This is the drive belt 30 over part of the circumference at the outer edge 28 and is about leadership roles 32 and a drive roller 34 recycled. The drive roller 34 is powered by a ring drive 35 driven, so the ring 24 the mounting device 22 turns.

The strip to be plated 12 is in a side view in 2 shown. The ribbon 12 can be, for example, a punching tape, the strung together contiguous parts 36 , For example, pins, having one end 38 is to be galvanized and then separated in a later process by punching. The ribbon 12 So, at least in the area that is the ends 38 Of the parts 36 has to be galvanized. In the other end area 39 can the band 12 being held.

The ribbon 12 will go to the unwinding station 14 from a biased leadership role 40 captured and between the outer edge 28 of the ring 24 and the drive belt 30 guided so that it kept it non-slip and with the rotating ring 24 is taken. This is the tape 12 so introduced that it only with its upper area from the outer edge 28 and drive belt 30 is taken and the area to be plated (ends 38 ) protrudes downwards. About the metal ring 24 is electrical contact to the tape 12 made so that it can also be galvanized. The ring 24 itself is electrically contacted via sliding contacts.

Furthermore, the galvanizing station 16 several electroplating baths 42 on, over part of the circumference of the mounting device 22 distributed and arranged below this. With electroplating bath 42 It should be meant here in general, every bath that may be necessary for a galvanic process. These are pre-treatment baths, electrolytic cells and the like.

These baths 42 have in plan view ( 1 ) In the plant according to the invention a trapezoidal shape, so that they strung together give a hexagonal shape and each bath 42 forming a side of the hexagon. Thus, the part-circular space below the mounting device 22 is optimally utilized. Thus, five electroplating baths can be arranged in one electroplating station. About the remaining sixth page of the hexagon is the band 12 introduced as described and also executed. The ribbon 12 is thus continuously through each of the five bathrooms 42 led and treated accordingly.

3 shows a perspective view of such a galvanic bath 42 , As is known, the bath has a central basin 42 - 1 in which z. B. electrodes and through which the tape 12 is promoted to be galvanized. Next, the bathroom points 42 an overflow basin 42 - 2 for collecting the electrolyte, a pumping system 42 - 3 and an electrical connection, not shown. If necessary, the bathroom can 42 Other components such as heaters, rectifiers and the like include. All components of a galvanic bath 42 are on a rack 42 - 4 stored that on rollers 42 - 5 rests and thus forms a car. At least the pelvis 42 - 1 and 42 - 2 can be adjusted in height to lower the electroplating bath 42 from the galvanizing station 16 to be able to drive out and in this way the baths 42 easy to exchange. A galvanizing plant according to the invention 10 can be converted very quickly and easily to different galvanizing processes.

About another leadership role 44 becomes the band 12 from the electroplating station 16 executed and the winding station 18 fed. The winding station 18 is similar to the unwind station 14 constructed and has a role 18 - 1 on which the tape 12 is wound up, a leadership role 18 - 2 for correct feeding of the tape 12 and a take-up drive 18 - 3 on.

If all three drives, unwind drive 14 - 3 , Ring drive 35 and take-up drive 18 - 3 The belt is conveyed precisely and evenly and is conveyed cleanly and without tension or sagging. This is done by controlling the drives via the control device 20 guaranteed.

For synchronization between the unwind station 14 and the galvanizing station 16 a first speed adjustment device is provided. This works as follows. The leadership 14 - 2 is movably mounted, namely laterally deflectable and biased stored, which by the double arrow 50 is indicated. The deflection of the leadership role 14 -2 or an arm on which the leadership role 14 - 2 can be stored by the control device 20 captures what's going through the connecting line 52 is shown. Depending on the deflection controls the control device 20 now the unwinding drive 14 - 3 , so that the deflection always corresponds to a desired deflection. The unwinding drive 14 - 2 is thus regulated to the ring drive. This specifies the conveying speed. The ribbon 12 then always has the same, right tension.

In an analogous manner, the winding drive 18 - 3 with a second speed adjustment device by means of the guide roller 18 - 2 whose deflection is also detected, via the control device 20 regulated.

The control device 20 is housed in a control cabinet, on the touch panel all parameters such as temperatures, speeds and currents can be displayed or changed. The rectifiers of all cells supply current and voltage. The speed of the system is infinitely adjustable from 0 to a maximum speed.

In 4 is shown a further embodiment of the system according to the invention. For certain electroplating tasks, the five baths are 42 the first electroplating station 16 maybe too little. In this case, the system can be extended in the simplest way by adding another galvanizing station 16 - 2 between the first galvanizing station 16 and the winding station 18 is inserted. The second galvanizing station 16 - 2 is identical to the first one.

The ribbon 12 will be after leaving the first station 16 (after the leadership role 44 ) of leadership 40 - 2 the second station 16 - 2 fed. As in the first station will be the band 12 by means of the ring 24 - 2 through the electroplating baths 42 - 2 the second station 16 - 2 led and finally on leadership 44 - 2 the winding station 18 fed and wound up there.

Tuning the drives is now a more complex problem. However, the invention has the principle that the authoritative speed of the ring drive 35 the first station 16 is. The entire regulation takes over again the control device 20 , The control over the first speed adjustment device between the unwinding station and the first electroplating station 16 stays unchanged. The regulation of the ring drive 35 - 2 the second galvanizing station 16 - 2 happens such that the deflection (double arrow 60 ) of the likewise deflectable biased guide roller 40 - 2 detected and the control device 20 is fed as a controlled variable, so that the ring drive 35 - 2 is regulated so that a target deflection of the leading role 40 - 2 is present. Finally, the regulation takes place between the second electroplating station 16 - 2 and the winding station 18 as in the first embodiment 1 the regulation between the first galvanizing station 16 and the winding station 18 ,

Depending on your needs, the system can 10 be extended by a third or even more galvanizing in the same way. It makes sense to regulate the drive speed of each additional galvanizing station that is used, in each case according to its predecessor, that is, the station which is located upstream. Overall, then the drive speed is determined by the first station.

Another galvanizing station can be useful, for example, if the tape 12 not only in certain areas (at the ends 38 ) but should be completely galvanized. Then in the first galvanizing station 16 the end area 38 galvanized and in the area 39 the ribbon 12 held. Between the first and second galvanizing station is the band 12 turned, so twisted by 180, so that it is reversed introduced in the second galvanizing and there with the already galvanized end portions 38 is held. The one in the first galvanizing station 16 non-galvanized area 39 now stands down over and can in the second galvanizing station 16 - 2 be galvanized.

For an easy replacement of a galvanic bath 42 or 42 - 2 is via the electrical connection a the respective electroplating characteristic coding to the control device 20 transmittable. Then all information about the bathroom are directly the control device 20 in front.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0070694 A1 [0003]

Claims (11)

An apparatus (10) for continuously plating a portion of a belt (12) having an unwinding station (14) from which the unalloyed belt (12) is unwindable and feedable to a first plating station (16) and to a powered windup station (18) in which the galvanized strip (12) can be wound up, and with a control device (20), the first plating station (16) comprising: - a circular, horizontal support device (22) which is rotatable about a vertical axis and at its outer edge (28 ) the band (30) is durable, so that the area to be electroplated (38) protrudes downwards - an endless drive belt (12), which rests over a part of the circumference on the outer edge (28) and the band (30) between the Outer edge (28) and the drive belt (30) is held and thereby in the circumferential direction is conveyed, - a drive (35) for rotating the support means (22), - electroplating baths (42) over a part of the Umf distributed on the support means (22) and are arranged below the support means (22), so that the area to be electroplated (38) of the belt (12) through the baths (42) conveyed through and can be electroplated where the unwinding station is driven and the Drive of the unwinding station via a first speed adjusting device in its speed of the drive speed of the support device is adaptable, characterized in that at least one of the electroplating baths (42) has a central basin (42-1), in which electrodes are located and through which the band (12 ) to be galvanized, and that the bath 42 has an overflow basin (42-2) for collecting the electrolyte, a pumping system (42-3) and an electrical connection, all components of the electroplating bath 42 being mounted on a frame (42-). 4) are mounted, that rests on rollers (42-5) and thus forms a carriage, wherein at least the pelvis (42-1) un d (42-2) are adjustable in height so that after lowering the electroplating bath (42) from the galvanizing station (16) is extendable and in this way the baths (42) are easily replaceable Plant after Claim 1 , characterized in that the first speed adjusting device has a laterally to the conveying direction of the belt arranged roll over which the unwound belt is feasible and which holds the tape in tension and the deflection of the roller is detectable by the control device and the drive of the unwinding station is adaptable wherein the drive of the unwinding station is regulated to a desired deflection. Installation according to one of the preceding claims, characterized in that the first electroplating station has a biased feed roller for correctly feeding the tape between the outer edge of the support means and the drive belt. Installation according to one of the preceding claims, characterized in that the winding station has a second speed adjustment device for adapting the drive of the winding station to the drive speed of the mounting device. Plant according to one of the preceding claims, characterized in that at least one second electroplating station is provided, to which the strip leaving the first electroplating station can be fed. Plant after Claim 6 Characterized in that the second Galvanisierstation has a further speed adjustment device which is associated with a feed roller of the second Galvanisierstation and which is durable biased laterally deflectable so that a change of the deflection is a measure of a difference in speed of the drives of the two Galvanisierstationen that of the Control device is detected and ausregelbar. Installation according to one of the preceding claims, characterized in that all drives to be controlled can be aligned by the control device after the drive of the first galvanizing station. Installation according to one of the preceding claims, characterized in that a third galvanizing station is provided. Plant according to one of the preceding claims, characterized in that the electroplating baths of a galvanizing station are arranged hexagonally and form five sides of a hexagon, and the supply and removal of the strip takes place via the sixth side. Installation according to one of the preceding claims, characterized in that each electroplating bath has an electrical connection and via the electrical connection a coding of the respective electroplating coding is transmitted to the control device. Installation according to one of the preceding claims, characterized in that the Electroplating baths and / or the unwinding station and / or the Aufwickelstation resting on wheels.

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