DE2409481A1 - Device for multi-bath immersion treatments - suitable for the acid polishing of glassware - Google Patents

Abstract

In the treatment of workpieces by immersion in aggressive liqs. e.g. for the acid polishing of glassware, the objects being treated are placed in a container which is supported by suspension gear and dipped into the baths. The baths are arranged in a row alongside a conveyor track on which a trolley is mounted and used to carry the suspension gear on which interchangeable containers can be mounted. The conveyor track pref. and extends beyond the row of baths by the width of one bath and is fitted with both vertical and lateral guides for the trolley which pref. has a mounting for a fork pivotted by a motor, the free ends of the fork being used to hold a work-basket or a dum. Used for e.g. electroplating, etching, or acid polishing of glassware. The container i.e. a work-basket or drum, can be successively immersed in a row of baths.

Description

"Device for immersion treatment of workpieces in aggressive liquids The invention is directed to a device for the immersion treatment of workpieces in aggressive liquids, e.g. for acid polishing of glassware, for electroplating treatment, For etching or the like., With arranged side by side, absorbing the liquid Troughs in which one containing the workpieces, possibly from a hanger carried container is immersed.

The workpieces to be treated in these baths are generally layered in baskets or in drums and placed in these containers in the respective Bath immersed. The successive troughs contain different liquids, E.g. when acid polishing lead-containing glassware, first the actual polishing bath from a mixture of different Acids, then one or more rinsing baths, e.g. is sulfuric acid, and finally a rinse bath, e.g. ### water. One and the same container passes through all the different baths one after the other. Both For this purpose, he is posted to a conveyor with prior art devices and after immersion in the respective trough, separated from it again. Will Related to baskets, each basket has its own hanger, which is not only for the apparatus Effort increases, but is also responsible for the fact that such baskets are not stacked can be. It is of particular importance in these devices that the drive parts largely within the action of the various liquids and their vapors lie, which leads to considerable structural difficulties and particularly complex Precautions Required.

There is therefore a need to provide a device that this immersion treatment of workpieces in aggressive liquids to a large extent rationalize and which are as simple as possible in structure and less prone to failure is in operation.

The invention solves Task in such a way that a carriageway is arranged along the troughs arranged in a row next to one another and a carriage can be moved on this, which has the lifting and «carrying device as well as the hanger for exchangeable reception of a container ####### each.

Such a design of the device enables a procedure S. in which the container, be it a basket or a drum or the like., With a support device As a result, the various baths associated with one another remain connected during the passage.

He is practically over from this lifting and carrying device all stations, in order to then be deposited or transferred to a conveyor at night / passing through all the baths.

The roadway is expediently designed so that it is suitable for the car has at least one vertical and lateral guide. The car also carries the lifting and carrying device for the container also the entire drives, d.l1. the drive for this device and a corresponding drive. All essential Parts of these drives are outside the range of the acid exposure.

Finally, it is of particular advantage that this device is without special on-site precautions are taken, as in general the The track is attached to the troughs.

In a further embodiment of the invention, the roadway is for the car by about the width of a trough across the row of side-by-side troughs continued to move the car accordingly and the handover of the to be able to advantageously accomplish the container containing the workpieces.

It is within the scope of the basic idea of the invention that on the car a fork and this pivoting servomotor are mounted and on the free At the end of the fork arms, a bearing shell for the hanger that holds a basket or is arranged for a drum. By means of the servomotor (s), which are pneumatic, hydraulic or can work electromechanically, the receiving the respective container can Lower and raise the fork, and these processes can be controlled centrally or even run automatically, i.e. preprogrammed.

If a basket can be used as a container to hold the workpieces, so the inventive training brings the further decisive advantage that contrary to the known devices, only one hanger per device, and not more than before, one hanger per basket is required. When putting down a basket the hanger remains connected to the fork. This point of view leads to his Finally, further training on the use of stackable baskets, which is a special one important contribution is made to the desired rationalization.

If, as the invention further provides, the fork is mounted eccentrically on a shaft arranged in the carriage and connected to a drive, the device can at the same time be provided with a movement drive for the container immersed in the liquid bath. A drive acting eccentrically on the support device, with a corresponding structural design, allows the container to be moved in the immersion bath in such a way that the goods contained therein are additionally rinsed through. The eccentric drive can be designed so that both a vertical also a horizontal movement component is achieved, and these can also be selected to certain limits ire i.

What is possible with the device according to the invention both drums Providing baskets as containers for receiving the workpieces is decisive because, according to the invention, the drive can be decoupled from the shaft. In addition, the invention provides that / the fork is arranged a drive transmission that can be uncoupled to a drum mounted in the holder of the fork.

These measures are based on the idea that when using a Drum the eccentric movement of the fork is dispensable, since here the drum rotation for sufficient loosening, calm and correspondingly intensive flushing of the workpieces cares. On the other hand, however, the device should be without any major retooling operated with both containers in question for receiving the workpieces can be.

Within the scope of this thought, it lies between the one arranged on the car Drive and - the shaft a chain belt drive or the like.

to be arranged and between the drive wheel mounted on the shaft and the shaft as well as between this drive wheel and one: another drive wheel on the Drive transmission to the drum arranged in a fork to provide a coupling each, both of which mutually engage or disengage. When using an @ The basket as a container is then coupled to the corresponding drive wheel with the shaft be so that the support device performs the intended eccentric movement. In this case, the drive transmission in the fork area is out of order on the other hand, if a drum is used, the eccentric is stopped and the drive is over transfer the transmission devices in the area of the fork to the drum, l.

According to the invention, this drive transmission has an output gear which is in engagement with a ring gear of the drum. Beneficial comes for this arrangement a changeover clutch in view.

According to another feature of the invention is on the car in the Movement range of the basket in the lifted position protruding stop arm arranged. This tilts the lifted basket and drains the liquid favored.

It is within the scope of the invention that between the hanger and the Fork and / or between the hanger and the basket one releasable lock is arranged. This ensures that in the two cases under consideration a reliable connection can be established. When immersing the with the The suspension of the locked basket in the treatment liquid has a considerable effect Buoyancy, given the high specific gravity of such liquids, e.g. Sulfuric acid, taken into account. On the other hand, it should of course also be between the basket and Hanger as firm a connection as possible, but the pivoting movement of the basket is not affected.

The hanger preferably used in the device according to the invention consists of two side walls connected to one another by a supporting shaft, on which the locking device opposite the fork and / or the locking device are stored opposite the basket. This idea can be constructed in such a way sorteilhaft train that on the side walls of the hanger each one in their Distance to the side cheek adjustable clamping plate is arranged, which is in the closed position engages under a supporting rim of the basket. When the clamping plates are loosened, the hanger placed on the basket. Then the clamping plates are adjusted so that they are fixed Grip the basket and, if necessary, press it against the side wall. To adjust the Klenimplatte can, for example, an eccentric with a corresponding handle or a screw drive with a coarse thread can be used. According to another For this purpose, the feature of the invention is adjustable in relation to one another on one of the two Parts, i.e. side cheek and clamping plate, are stored and attached to a high helix nut the other part an in these engaging threaded bolts are arranged. When the nut is rotated, the threaded bolt is drawn into the nut or unscrewed from it, so that the desired adjustment movement results.

The locking device between the hanger and fork may be detailed be designed in such a way that on both cheeks (only shown on one side in Fig. 3) the hanger a lockable slide is arranged, which is in its locked position the bracket of the fork engages under, so that the forces generating the buoyancy can be counteracted. The bracket holding the hanger can go up the fork be quite open. If the device works with a drum, it plays this point of view does not matter because such a drum usually immersed in the liquid bath with only part of its diameter and with one larger part is above the liquid level.

Further features, details and advantages of the invention result from the following description of a preferred embodiment of the invention as well as on the basis of the drawing. Here show, in a simplified representation: Fig. 1 shows a cross section through the device; Fig. 2 is a rear view of the car according to Arrow II in Fig. 1; Fig. 3 shows a detail on an enlarged scale, partly in Section along line III-III in Fig. 1; 4 is a side view of the hanger approximately in section along line IV-IV in FIG. 3; Fig. 5 is a side view on the hanger in the direction of arrow V in Fig. 3; 6 shows an embodiment with a drum in broken representation and Flg. 7 is a side view of the drum in the direction of the arrow VII in Fig. 6 The device has a number of troughs arranged side by side 1, which rest on a base 2. This is at the front 3 of the troughs 1. provided with an extension 4. In this extension 4 is one up open U-shaped rail 5 of a roadway mounted, which is at the front 3 extends along the side by side troughs 1 and on one or both Ends of the row is continued by a corresponding piece. At level 6 is an upper rail 7 of the roadway is supported. A carriage 8 can be moved on this. It has rollers 9 on its foot, which are guided in the lower rail 5. Further rollers 10 run on the upper rail 7 of the track that can be seen in FIG The width of the carriage 8 corresponds approximately to the width of each trough 1. In the carriage 8 is a drive motor 11, e.g.

a hydraulic motor, mounted, the 12 minbestens via a chain drive one of the rollers 10 drives.

A shaft 14 is mounted in the two side parts 13 of the carriage 8, an eccentric 15 is attached to each of its two ends, each having a leg 16 a fork 17 which crosses the trough 1 is used for storage. The two legs 16 are connected to each other by a strut 18, and they point at their free At the end of 19 each has a bearing shell 20. On the carriage 8 is a pneumatic or hydraulic one Servomotor 21 supported, the piston rod 22 of which engages the strut 18 and the raising and lowering of the fork 17 causes.

The carriage 8 also has a drive 23, again if necessary a hydraulic motor, the drive shaft 24 of which carries a sprocket 25. This is Via a chain 26 with a further sprocket 27 on the shaft 14 for driving purposes tied together.

There is a coupling between the sprocket 27 and the shaft 14, namely, the sprocket 27 is in the position shown in FIG. 2 with the shaft 14 non-rotatably coupled. To disengage this sprocket 27 is in the direction of the arrow 28 postponed. While it is thus uncoupled from the shaft 14, it enters Mesh connection with a further chain wheel loosely mounted on the shaft 14 29 of a drive transmission arranged on the leg 16 ′ of the fork 17. These has a chain wheel 31 ud connected by the chain 30 with the chain wheel 29 non-rotatably on this coupled gear 32, which with a ring gear 33 a Drum 34 combs. The drum 34 has a perforated shell 35 as well as axial Stub shaft 36 with which it is in the bearing shells 20 of the fork 17 is stored (see in particular FIGS. 6 and 7).

If the clutch 37 is engaged between the two sprockets 27 and 29, so that these rotate loosely on the shaft 14, the drive of the motor 23 acts over-the Chain drive 26 and the further chain drive 30 on the drum 34 and sets this together with the workpieces housed inside them in rotating motion.

In the embodiment shown in Fig. 1, the fork carries 17 via a hanger 38 a basket 39 as a container for receiving the to be treated Work pieces. This hanger 38 has a support shaft 58 and two at a distance from it attached side cheeks 40 and 41, which has a shoulder-like recess at the lower end 42 to. Have support on the stacking edge 43 of the basket 39. 41 on each cheek of the hanger 38 is a screw bolt 42 attached to the outside of the The cheek 41 is penetrated by an elongated hole 43 in a slide 44 and a locking nut 45 carries. This slide 44 is between the two positions 44 and 44 'in Fig. 5 movable. It has one of the outer contour 59 of the bearing shell 20 of the fork 17 corresponding shoulder-like recess, which is shown in solid lines Position the bearing shell 20 engages below and a lifting of the two shaft ends 46 in the fork 17 resting hanger 38 prevented without the pivotability of the To affect hanger 38 with the basket 39. (The slide 44 is in Fig. 3 for Simplification only shown on one side).

Two are used to lock the hanger 38 relative to the basket 39 Clamping plates 47, which are each mounted on the outside of the two cheeks 40 and 41. A threaded bolt 48 is fastened to the clamping plate 47, the coarse thread in the corresponding mating thread of a nut 49 engages in the side cheek 40 or 41 is mounted and provided with a pivot lever 50. An upper longitudinal nose 51 of the clamping plate is to engage in a corresponding groove 52 of the respective Side cheek 40, 41 is determined, while a lower longitudinal nose 53 of the clamping plate 47 the lower edge of the stacking edge 43 of the basket 39 engages below.

In Fig. 3, the open position of this clamping plate 47 is shown on the right. If the pivot lever 50 is pivoted by approximately a quarter turn, the screw bolt becomes 48 pulled into the nut 49, and the clamping plate 47 arrives with both the Side cheek 40 or 41, as well as with the stacking edge 43 of the basket 39 in engagement, what is shown on the left in FIG.

Are the workpieces to be treated in a basket 39 instead of Drum 34 housed, the carriage 8 takes the basket 39 outside the first or last trough 1 of the series, and by the servomotor 21 the fork 17 is in raised to such a height, as indicated by dashed lines in Fig. 1 at 39 '. By lowering the fork 17 accordingly with the aid of the servomotor 21, it now appears the basket 39 to below the liquid level 55. Is now in the gear position according to Fig. 2 the drive motor 23 put into operation, receives the Fork 17 and thus the basket 39 via the hanger 38 with an elliptical movement the lateral component x and the vertical component y (see FIG. 1).

As a result, the workpieces located in the basket 39 of the in the Trough 1 in the liquid is rinsed intensively. After the treatment is finished the basket 39 through the fork 17 from the trough 1 via the position 39 'to the position 39 ″. The basket 39 comes to rest against the one at the upper end of the carriage 8 attached stop projecting into the path of movement of the raised basket 56, so that it is tilted accordingly, as can be seen from FIG. on this allows the treatment liquid to run off particularly quickly and completely reached on the treated workpieces.

The trough 1 is surmounted by a hood 57, to which, if necessary a suction pipe leading to a fan is connected. Trough 1 and hangers 38 and basket 39 as well as the drum 34 are made of a durable plastic.

Claims (15)

Claims 1. Device for immersion treatment of workpieces in aggressive Liquids, e.g. for acid polishing glassware, with side by side, the troughs containing the liquid, in which a work piece receiving, of a container carried by a hanger is immersed, characterized in that a roadway is arranged along the troughs (1) arranged next to one another in a row and on this a carriage (8) can be moved, which carries the lifting and carrying device as well as the hanger (38) for exchangeable accommodation of a container or the like. 2. Apparatus according to claim 1, characterized in that the roadway for the carriage (8) each has a vertical and lateral guide. 3. Apparatus according to claim 1 or 2, characterized in that the roadway by about the width of a trough (1) over the row of side by side arranged troughs is continued. 4. Device according to one of claims 1 to 3, characterized in that that on the carriage (8) a fork (17) and a servomotor (21) pivoting this are mounted and at the free end (19) of the fork legs (16) a bearing shell (20) for the hanger (38) receiving a basket (39) or for a drum (34) is. 5. Apparatus according to claim 4, characterized in that the fork (17) on a shaft arranged in the carriage (8) and connected to a drive (14) is mounted eccentrically. 6. Apparatus according to claim 5j, characterized in that the drive can be decoupled from the shaft 14. 7. Device according to one of claims 4 to 6, characterized in that that on the fork (17) a disengageable drive transmission to one in the bearing shell (20) of the fork (17) mounted drum (34) is arranged. 8. Device according to one of claims 5 to 7, characterized in that that between the drive arranged on the carriage (8) and the shaft (14) a chain, Belt drive or the like is arranged and between that on the shaft (14) and between this drive wheel (27) and) a drive wheel (29) arranged on the fork (17) Drive transmission to the drum is provided with a coupling (37), both of which get reciprocally engaged or disengaged. 9. Apparatus according to claim 7 or 8, characterized in that the drive transmission has an output gear (32) with a ring gear (33) of the drum (34) is engaged. 10. Device according to one of claims 1 to 9, characterized in that that on the carriage (8) a in the range of motion of the lifted position Basket (39 '') egg-bearing stop ring (56) is arranged. 11. Device according to one of claims 1 to 10, characterized in that d between the hanger (38) and the fork (17) and / or between the hanger (38) and a releasable lock is arranged on the basket (39). 12. Device according to one of claims 1 to 11, characterized in that that the hanger (38) consists of two sidecars connected by a support shaft (58) (40,41), on which the locking device opposite the fork (17) and / or are mounted opposite the basket (39). 13.Vorrichtung according to claim 12, characterized in that the Side cheeks (40, 41) each have a clamping plate that is adjustable in terms of their distance from the side cheek (47) is arranged, which in the closed position has a support edge (43) of the basket (39) reach under. 14. Apparatus according to claim 13, characterized in that on one the two mutually adjustable parts, side wall (41) and clamping plate (47), a coarse thread nut (49) mounted and on the other part one engaging in this Threaded bolt (48) is arranged. 15. Device according to one of claims 12 to 14, characterized in that that a lockable slide (44) is arranged on one cheek (41) of the hanger (38) is, which engages under the bearing shell (20) of the fork (17) in its locked position.