FI56890C - ANORDNING FOER OEPPNANDE OCH SLUTANDE AV EN ROTERANDE TRUMMA - Google Patents

Description

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C ^ Patent granted 10 Λ 1930 Patent meddelat V (51) Kv.lk. * / Lnt.CI. * F 16 J 13/00 FINLAND · —FINLAND (21) P »t« nttlh »k * mu« - PKMttn ( 6knlng 760315 (22) Hakamitvilvl - Ansöknlngsdag 10.02.76 ^ ^ (23) Primary cloud— Glltlghattdag 10.02.76 (41) Become external - Bllvlt offantlig 11.0d. 77 _ * (44) -, _

Patent · och registerstyrelsen Antekan utlagd och uti. ) (72) Pauli Hongisto, Lahti, Leo Lehto, Lahti, Pekka Tarvainen, Lahti,

The present invention relates to an opening and closing arrangement for a rotating drum, in which an opening in the casing part of the rumble can be opened and replaced by an opening and closing arrangement of the rotating drum. closable by a lid and the drum is adapted to rotate on the body by means of a drive mechanism, the lid being adapted to slide in the sliding grooves connected to the casing surface of the rum and the lid having at least one outwardly projecting projection.

Such an arrangement can be used, for example, in galvanic and chemical coating processes.

In the past, e.g. a solution in which the lid is opened and closed by hand. In the era of automation, this is no longer the recommended solution.

Solutions are also known in which there is no cover at all. Thus, for example, the drum is adapted to oscillate at a certain angle so that the filling / emptying opening does not turn too far downwards and the objects to be handled do not fall. In this case, however, the objects to be surface-treated cannot move sufficiently, and the dosage amount is also smaller.

In the so-called g-run drum, on the other hand, the opening of the drum is protected by an inwardly turned fixed guide plate, which prevents objects from falling when the drum is rotated in a certain direction. However, in such a structure, there is a risk of objects collapsing, and the drum can only be rotated in one direction during the pool steps, and the guide plate makes it difficult to fill and empty the drum.

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Various lid opening mechanisms are also known (cf. DE-A-2 243 147 and US-A-3 861 654). A structure is known from the former publication in which the cover is arranged to slide in the sliding grooves connected to the casing surface of the drum. However, the solutions to date are difficult to implement in detail and unreliable in use. Thus, for example, the construction of U.S. Patent 3,861,654 is complex as a whole, and the drum can be rotated in only one direction in the coating process. It is an object of the present invention to avoid the above disadvantages and to provide a new type of opening and closing arrangement that is simple and well suited to an automatic galvanizing process. .

The arrangement according to the invention is mainly characterized in that at least one abutment is arranged in connection with the body, to which said protrusion of the lid is adapted to engage so that the lid has to move relative to the casing of the rum, revealing said opening.

Particular embodiments of the arrangement according to the invention are in turn characterized by the solutions according to claims 2-7. The invention provides considerable advantages, of which the following are mentioned: Since the lid moves only in the grooves at the ends of the drum, its structure is very simple and inexpensive, so that the entire material of the lid can be the same corrosion-resistant material as the drum.

- When opening and closing the lid, the same power source as when rotating the drum can be used with a few auxiliaries, and the whole can be easily automated.

- The use of space for deck movements and additional structures is very advantageous.

- The drum can be rotated in one or two directions in the coating process.

The invention will now be examined in more detail by means of exemplary embodiments according to the accompanying drawings.

Figures 1-3 show one embodiment of an arrangement according to the invention in a sectional view seen from the end of the drum.

Figures 4-6 respectively show another embodiment of an arrangement according to the invention.

Figures 7-10 respectively show a third embodiment of an arrangement according to the invention.

Fig. 11 shows a side view of the arrangement according to Fig. 1.

Fig. 12 shows a section taken along the line I-I in Fig. 11.

Fig. 13 shows on an enlarged scale a section taken along the line II-II in Fig. 11.

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Fig. 14 shows a section on the enlarged scale of the branches taken along the line III-III in Fig. 11.

Figures 1, 2 and 3 show a system for opening and closing the electroplating drum, which involves emptying and filling the drum and in which the drum drive mechanism rotates the drum in only one direction. The lid is fixed to open and close ·

In Fig. 1, the drum 10 with its drive mechanisms 1 has been transferred from the pool steps of the surface treatment process to the dosing station 2. The rotation of the drum has stopped at the end of the drum steps, and the drum opening 3 and cover 6 are left at an arbitrary position.

When the drum 10 is positioned metering station it has received the control system is a start and started to rotate in the direction of arrow A direction (Fig 2), wherein - the cover 6 is stopped rigid barrier 5 against started by means of the lid protrusion 7 and the slide in the drum with respect to in rurrmun ends of the grooves 8, - the drum 10 has continued to rotate and emptied when the opening 3 has been in the down position (usually one turn is sufficient for emptying, but the drum can also rotate more than once to empty), and - the drum has stopped at an automatically controlled angle for refilling.

In Figure 3, the drum 10 is rotated in the direction of arrow A, the corners of Λ, the cover 6 has closed the opening 3 of the drum and the drum is ready for transfer to the pool stages.

Considering the special case of Figures 1, 2 and 3, which follows when the drum 10 has stopped after the pool steps and the protrusion 7 of the cover 6 has remained either exactly or almost at the same position as the barrier 5, it is found that only a partial opening of the cover 6 results to dosing station 2 because the movement of the rum is perpendicular from top to bottom. However, if wedging occurs between the parts 5 and 7, it can be completely avoided by making the barrier 5 flexible in the horizontal plane.

The system according to Figures 1, 2 and 3 is also suitable for use in the event that the rumble 10 is allowed to rotate when it is moved to the dosing station 2.

On the contrary, the situation is simpler than the steps described above, because the opening of the lid 6, the emptying of the rum 10 and the stopping at the angle oi (Fig. 2) for refilling take place immediately without a separate start of the drum.

Figures 4, 5 and 6 show an opening and closing system for a galvanizing drum, which involves emptying and filling the drum and in which the drum drive mechanism rotates the drum in only one direction. The cover opening and closing barrier is not fixed.

In Fig. 4, the drum 10 has been moved to the dosing station 2 and has been automatically stopped so that the opening 3 of the rumble is at an angle 06.

In Fig. 5, the actuator 4 (e.g. a hydraulic or pneumatic cylinder or an electric motor) has first moved the protrusion 7 (or

edge) to the trajectory. After this, the drum 10 is started to rotate in the direction of arrow B

in the direction in which the 4 50890 cover 6 has stopped against the obstacle 5 and started to slide relative to the drum in the grooves 8 at the ends of the drum.

- the drum has continued to rotate and emptied when the opening 3 has been in the down position, and - the drum has stopped again under automatic control at an angle cL for refilling.

Figure 6 is a pyörähtynyt drum 10 in the direction of the angle O angle ^ of arrow B, the cover 6 has closed the opening 3 of the drum and the drum is ready for transfer to the pool stages. The actuator 4 pulls the barrier 5 to the position shown in Fig. 4 for the next emptying and filling cycle.

Figures 7, B, 9 and 10 show a system for opening and closing the electroplating drum, which involves emptying and filling the drum and in which the drum drive mechanism rotates the drum in two directions. Opening and closing the lid is not fixed.

In Fig. 7, the drum 10 has been moved to the dosing station 2 and has been automatically stopped so that the opening 3 of the drum is at an angle rt.

In Fig. Θ, the actuator 4 has first moved the obstacle 5 into the path of movement of the cover projection 7. After this, the drum 10 is rotated in the direction of arrow C, until the opening 3 is opened.

In Fig. 9, the actuator 4 has pulled the barrier 5 out of the front of the lid projection 7, after which the drum 10 has rotated in either direction and stopped at an angle oC for a new dosing.

Figure 10, actuator 4 is pulled kannenulokkeen second barrier 9 was 11, the drum 10 is pyörähtynyt in the direction of arrow D, the angle d at an angle Λ, the cover 6 has closed the opening 3 of the drum and the drum is ready for transfer to the pool stages. The actuator 4 has moved the barrier 9 to the position shown in Fig. 7 for the next emptying and filling cycle.

The galvanizing drum opening and closing systems described above have utilized the drive mechanism required to rotate the drum in the process itself, but flagging of the lid in its grooves can also be done directly on the lid by some well-known actuator.

Figures 11 to 14 show some details that are important for the overall operation.

The grooves 12 on the outer surface of the lid 6 make the lid flexible and thus easy to move (Figures 12 and 13).

Flexible edge modules 14 are added to the edges of the opening 3 in the drum casing 13, which achieves a good tightness with respect to the cover 6 even for very small surface objects (Fig. 13). 5G8S0

The lid 6 is provided with a lock 17 to hold the lid in place in the closed and open positions (Fig. 14). For locking, recesses 16 are inclined at an angle to the direction of movement of the cover 16 at the bottom of the grooves Θ in the ends 15 of the rutrm. The locking can be, for example, a spring, ball or pin lock.

The opening and closing arrangement according to the invention can also be used for other similar purposes, such as, among other things, deburring and deburring mills and grain handling.

Claims (7)

An opening and closing arrangement for a rotating drum (10), wherein the opening (3) in the casing part of the drum (10) can be opened and closed by a cover (6) and the drum (10) can be adapted to rotate on the body (2) by a drive mechanism (1), wherein the cover (6) is arranged to slide in the sliding grooves (B) in contact with the jacket surface of the drum (10) and the cover (6) has at least one outwardly pointing projection (7, 11), characterized in that the body (2) has arranging at least one stop (5, 9) into which said protrusion (7, 11) of the cover (6) is adapted to engage so that the cover (6) has to move relative to the casing of the drum (10), exposing said opening (3), An arrangement according to claim 1, characterized in that the stop (5) is fixed (Figures 1-3). An arrangement according to claim 1 or 2, characterized in that the stop (5) is arranged to be movable by means of an actuator (4) (Figures 4 to 10). Arrangement according to one of the preceding claims, characterized in that there are two stops (5, 9) (Figures 7 to 10). An arrangement according to claim 3, characterized in that both stops (5, 9) are adapted to move the Sara actuator (4). Arrangement according to one of the preceding claims, characterized in that the lid (6) is adapted to be opened by rotating the drum (10) in one direction. 6 56890 Arrangement according to one of Claims 1 to 5, characterized in that the cover (6) is adapted to be opened by rotating the drum (10) in two directions.