DE1565293C

DE1565293C -

Info

Publication number: DE1565293C
Authority: DE

Description

F i g. 3 das kinematische Schema der Beschickungsund der Abnahmetrommel,F i g. 3 the kinematic diagram of the loading and unloading drum,

F i g. 4 die Schaltung zum Anschluß des Indukiors an den Hochfrequenzwandler.F i g. 4 the circuit for connecting the inductor to the high-frequency converter.

Die Vorrichtung besteht aus einer Trocken- und Ausglühkammer mit einem Heizteil 1 und einem Kühlteil 2, einem schlangenlinienförmig verlegten Kettenförderer 3, einem ebenfalls schlangenlinienförmig gestalteten Induktor 4 sowie einer Beschickungs- 5 und Abnahmetrommel 6. Der Kettenförderer 3 besteht aus zwei unendlichen zweireihigen Rollenketten 7, 8 (F i g. 2), die zur Platzeinsparung schlangenlinienförmig um Antriebs- 9 und Spannkettenräder 10 geführt werden. Auf den Rollenketten 7, 8 sind feste Einspannelemente 11 und bewegliche Federspanner 12 angeordnet, die zum Festhalten von Elektroden 13 dienen.The device consists of a drying and annealing chamber with a heating part 1 and a cooling part 2, a serpentine chain conveyor 3, a likewise serpentine inductor 4 and a feed 5 and Take-off drum 6. The chain conveyor 3 consists of two infinite double-row roller chains 7, 8 (Fig. 2), which serpentine around drive 9 and tension chain wheels 10 to save space be guided. Fixed clamping elements 11 and movable spring tensioners 12 are on the roller chains 7, 8 arranged, which serve to hold electrodes 13 in place.

Die Elektroden 13 werden über die Beschickungstrommel 5 dem Kettenförderer 3 zugeführt. Die Beschickungstrommel 5 besteht aus einer Trommel mit Quernuten 14 zur Aufnahme der Elektroden 13 (F i g. 3), aus Kettenrädern 15, 16 für die Rollenketten 7, 8 des Kettenförderers 3 und einer stirnseitig angeordneten Kopierschablone 17, die mit beweglichen Stangen 18 verbunden ist. Die Stangen 18 weisen am freien Ende eine Gabel zum Zusammendrücken von Federn 19 von Elektrodenhaltern 20 auf.The electrodes 13 are fed to the chain conveyor 3 via the feed drum 5. The feed drum 5 consists of a drum with transverse grooves 14 for receiving the electrodes 13 (FIG. 3), of sprockets 15, 16 for the roller chains 7, 8 of the chain conveyor 3 and a front side arranged copying template 17, which are movable with Rods 18 is connected. The rods 18 have a fork for pressing together at the free end Springs 19 of electrode holders 20.

Der Aufbau der Abnahmetrommel 6 ist analog dem der Beschickungstrommel 5.The structure of the removal drum 6 is analogous to that of the loading drum 5.

Der Induktor 4 besteht aus vier parallelen Induktorschienen 21,22,23 und 24, wobei die äußeren Induktorschienen 21 und 24 anderthalbmal schmaler sind als die mittleren Induktorschienen 22 und 23. Der Schienenwerkstoff besteht aus einer Aluminiumlegierung mit folgender Zusammensetzung: Aluminium 93,4°/₀, Kupfer 3,9 %> Magnesium 1,8 %, Mangan 0,9%.The inductor 4 consists of four parallel inductor rails 21, 22, 23 and 24, the outer inductor rails 21 and 24 being one and a half times narrower than the central inductor rails 22 and 23. The rail material consists of an aluminum alloy with the following composition: aluminum 93.4 ° / ₀ , copper 3.9%> magnesium 1.8%, manganese 0.9%.

Die Vorrichtung arbeitet folgenderweise.The device works as follows.

Die frischumhüllten Elektroden gelangen nach Verlassen der Presse, die zum Auftragen der Umhüllung dient, auf die Aufgaberutsche 26 und bei Drehung der Beschickungstrommel 5 in die Quernuten 14. Bei ihrer Weiterbewegung werden die Elektroden 13 zwischen den festen Einspannelementen 11 und den beweglichen Federspannern 12 des Kettenförderers 3 eingespannt, da die durch die Kopierschablone 17 geführten Stangen 18 die Federn der Federspanner 12 freigeben. Bei der Weiterbewegung des Kettenförderers 3 werden die Elektroden 13 in den Heizteil 1 der Trocken- und Ausglühkammer befördert, wo sie zwischen den Induktorschienen 21 bis 24 des Induktors 4 geführt und allmählich auf die Ausgliihtemperatur erhitzt werden. Die Elektroden 13 befinden sich im Heizteil 1 je nach der Zusammensetzung des Umhüllungsmaterials und der Umhüllungsstärke 7 bis 15 Minuten. Nach Beendigung der Wärmebehandlung werden die Elektroden 13 in den Kühlteil 2 der Trocken- und Ausglühkammer und auf die Abnahmetrommel 6 geführt. Beim Umlaufen der Rollenketten 7, 8 um die Trommel 6 werden die Einspannvorrichtungen geöffnet und die Elektroden 13 freigegeben. Dabei bleiben die Elektroden 13 in den Quernuten 14 der Trommel liegen und können leicht zu Verpackungsmaschinen weiterbefördert werden. After leaving the press, the freshly coated electrodes are used to apply the coating serves, on the feed chute 26 and upon rotation of the feed drum 5 in the transverse grooves 14. When their The electrodes 13 are moved further between the fixed clamping elements 11 and the movable ones Spring clamps 12 of the chain conveyor 3 clamped, as the rods guided through the template 17 18 release the springs of the spring tensioner 12. As the chain conveyor 3 continues to move, the Electrodes 13 conveyed into the heating part 1 of the drying and annealing chamber, where they are placed between the inductor rails 21 to 24 of the inductor 4 and gradually heated to the annealing temperature. The electrodes 13 are located in the heating part 1 depending on the composition of the covering material and the serving thickness 7 to 15 minutes. After the completion of the heat treatment, the electrodes 13 out into the cooling part 2 of the drying and annealing chamber and onto the removal drum 6. When walking around of the roller chains 7, 8 around the drum 6, the clamping devices are opened and the electrodes 13 released. The electrodes 13 remain in the transverse grooves 14 of the drum and can can easily be transported to packaging machines.

Um Energie einzusparen, ist der Heizteil 1 und der Kühlteil 2 der Trocken- und Ausglühkammer durch ein gemeinsames Luftumlaufsystem mit einem Lüfter 25 verbunden. Der Luftaustausch mit der Umgebungsluft wird durch Sonderschieber geregelt. In order to save energy, the heating part 1 and the cooling part 2 of the drying and annealing chamber are through a common air circulation system with a fan 25 connected. The exchange of air with the ambient air is regulated by special slides.

F i g. 4 zeigt die Schaltung zum Anschluß des Induktors 4 an den Hochfrequenzwandler. Die Kapazität des Kondensators C wird durch die BedingungF i g. 4 shows the circuit for connecting the inductor 4 to the high-frequency converter. The capacity of the capacitor C is given by the condition

C =C =

CkCk

Ck-ICk-I

bestimmt, die die Stabilisierung der Stromparameter im Heizinduktor gewährleistet.determined, which ensures the stabilization of the current parameters in the heating inductor.

Die zum Festhalten der Elektroden 13 dienenden Federspanner 12 können durch einen anderen Förderkettentyp oder einen anderen Elektrodenhalten (beispielsweise mit Paramentmagneten) ersetzt werden. The spring tensioners 12 used to hold the electrodes 13 in place can be of a different type of conveyor chain or another electrode holder (for example with parament magnets).

Es ist auch möglich, die Elektrodenumhüllungen in senkrechter Lage zu trocknen und auszuglühen. Dazu werden die Elektroden durch einen unendlichen Kettenförderer mit Aussparungen transportiert, in die die Elektroden mit dem nichtumhüllten nach unten gerichteten Ende eingesetzt werden. Der aus Schienen bestehende Induktor wird in diesem Falle oberhalb des Förderers angeordnet, und die Elektroden werden in Schlitzen zwischen den parallelen Induktorschienen befördert.It is also possible to dry and anneal the electrode sheaths in a vertical position. In addition the electrodes are transported by an infinite chain conveyor with recesses into which the electrodes are inserted with the uncovered end facing downwards. The one from rails existing inductor is placed above the conveyor in this case, and the electrodes are conveyed in slots between the parallel inductor rails.

Der Vorteil dieser Ausführung liegt in einer einfacheren Konstruktion der Transportvorrichtung, jedoch sind dabei zusätzliche Vorrichtungen zur Übergabe der Elektroden von der Presse, auf der sie ihre Umhüllung erhalten, zur Trocken- und Ausglühkammer erforderlich.The advantage of this design is a simpler construction of the transport device, however are additional devices for transferring the electrodes from the press on which they are placed Wrapping received, required for drying and annealing chamber.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 2 When passing the electrodes through a patent claim: ductor, the electrodes are heated to a relatively high temperature. Keep cool during onward transport

1. Apparatus for drying and annealing them down again until they reach the next inductor of covered welding electrodes below high 5, whereupon the process is repeated. Da frequency heating with one drying and one cycle, only one takes place in the known devices annealing chamber, an inductor and a transport discontinuous heating; also will be in them Device for transporting the electrodes, none over the entire length of the electrodes characterized in that the moderate heating is achieved.

Duktor (4) made of parallel inductor rails (21 io as a result of the strong temperature fluctuations

up to 24), which lengthways in sections can hardly avoid cracking in the envelope,

are divided, where the surface current density is the mechanical strength of the envelope

the following section is larger than that of the low, but its humidity is high,

previous. The object of the invention is to avoid the

2. Device according to claim 1, characterized in that the known devices have disadvantages, indicates that the inductor rails (21 to 24) have a device for drying and annealing are divided into sections according to the width, with encased welding electrodes indicating the one the surface current density of the outer inductor continuously increasing and over the length of the seemed (21, 24) larger, about one and a half times, than electrodes uniform heating of the enveloped that of the middle (22, 23) is. 20 electrodes guaranteed and thus electrodes with

3. Apparatus according to claim 1 and 2, characterized by high quality of the envelope (high mechanical characterized in that in the supply circuit of the strength, high moisture resistance and crack inductor (4) a capacitor is switched on, freedom to establish) allowed.

whose capacity is dimensioned so that a stable This is achieved according to the invention in that

sizing the current independently of the inductor - the inductor consists of parallel inductor rails,

load is guaranteed. which are divided lengthwise into sections, with the

4. Apparatus according to claim 1 to 3, characterized in surface current density of the respective following section characterized in that the one from a heating (1) and is greater than that of the preceding.

a cooling part (2) existing dry and It is advantageous that the inductor rails

Annealing chamber with a common air circulation 30 width are divided into sections, with the

system is equipped. Surface current density of the outer rails is greater,

5. Apparatus according to claim 1 to 4, characterized about one and a half times than that of the middle one.
characterized in that the transport device and a capacitor, the capacitance of which is arranged or designed in the form of a capillary, is preferably switched into the feed circuit of the inductor (4) in a zigzag or serpentine manner. 33 rate is such that a stabilization of the current

6. Apparatus according to claim 1 to 5, thereby ensured regardless of the inductor load characterized in that the transport device is as.

Chain conveyor (3) with two parallel two-row To save energy, it is advantageous that

Rollers (7, 8) is executed, each chain consisting of a heating and a cooling part member a spring tensioning device (11, 12) for the drying and annealing chamber with a common holding the electrodes (13). is equipped with the same air circulation system.

7. Apparatus according to claim 1 to 6, characterized in order to determine the dimensions of the drying and annealing, that to keep the task and acceptance chamber small, are preferably the transducers Electrodes (13) onto and from the transport port device and the rail inductor zigzag device Drums (5, 6) are provided, which are 45-shaped or serpentine-shaped or Transverse grooves (14) designed to accommodate the electrodes (13).

and have a copy template (17) which has the A further advantageous embodiment,

The spring tensioner (12) controls the transport device. that the transport device as a chain conveyor with

8. Apparatus according to claim 1 to 7, characterized in that two parallel two-row chains are designed, characterized in that the inductor rails (21, 24) 50, each chain link being a spring tensioning device made of a highly conductive aluminum alloy with to hold the electrodes in place.

93.4% aluminum, 3.9% copper, 1.8% magne- Preferably are used to supply and purchase the

sium and 0.9% manganese. Electrodes to and from the transport device

Drums provided that have grooves for receiving the 55 electrodes and a template that

controls the spring tensioner of the transport device.

In order to keep the rail temperature within the range of 80 to 90 ° C, it is advantageous that the

The invention relates to a device for dry inductor rails made of a highly conductive aluminum and annealing of coated welding electrodes 60 alloy with 93.4% aluminum, 3.9% copper, under high frequency heating with a dry and 1.8% magnesium and 0.9% Manganese exist.
Annealing chamber, an inductor and a trans- In the following the invention will be described by means of an export device for conveying the electrodes. management example with reference to the drawing in more detail

Such a device is explained from the Swedish. It shows

Patent specification 149 997 known. She has several in FIG. 65. 1 shows the kinematic scheme of the device in high and side view arranged at certain distances from one another,

frequency current inductors through which the electrodes in Fig. 2 a vertical section through the device

are passed through. tion,