Slide closure for vessels containing molten metal

Abstract

The sliding closure for a vessel containing molten metal comprises a slider housing (12), a sliding unit with a slide rod (13) longitudinally guided therein, and a linear actuator (20) that can be fastened in the holder (15) by means of a holder (15) on the slider housing (12) as well as a drive rod (20') that can be connected to the slide rod (13). The linear actuator (20) can slide into the holder (15) on the slider housing (12), preferably transversely to its adjustment direction, and can be removed from and locked in the holder (15). At least one locking means (25, 30) is fastened to each of the linear actuator (20) and the holder (15), and the locking means are developed to interact with each other to automatically lock the linear actuator (20) after or while it is being pushed into the holder (15). This results in a permanent and safe fastening of the linear actuator in the holder.

Description

[Technical Field]

[0001] The present invention relates to a sliding closure for a vessel containing molten metal, the sliding closure having a slider housing, a sliding unit with a sliding rod guided longitudinally therein, and a linear actuator that can be fastened to the holder not only on the slider housing but also by means of a drive rod that can be connected to the sliding rod, the linear actuator being able to slide on the slider housing into the holder, preferably transverse to the adjustment direction, and be able to be removed from the holder and be locked in the holder. [Background technology]

[0002] A known sliding closure for vessels containing molten metal, from document EP 3 424 618, comprises a slider housing, a sliding unit with a sliding rod guided longitudinally therein, and a linear actuator that can be inserted into the holder not only with a holder on the slider housing but also with a drive rod that can be connected to the sliding rod of the sliding unit by a connection. This connection is developed in such a way that when it is in the flange of the linear actuator, the drive rod moves against the sliding unit, which is pressed into a lateral recess of the holder, and the connection has a connecting part at one end on the sliding rod and a connecting part at the front end of the drive rod of the linear actuator that connects the drive rod against the sliding rod when it slides.

[0003] The present invention provides a locking device that can be actuated by the linear actuator and interacts with the holder, through which the linear actuator can be fixed in the holder after sliding into it or can be unlocked again before removing the holder. The linear actuator has a hydraulic cylinder, a main piston that drives a drive rod into the hydraulic cylinder, and an additional piston that can be moved independently of the main piston to actuate the locking device. The additional piston has a locking head that can be guided on the drive rod, and when loaded in the locking direction, the locking head can be retracted from inside the hydraulic cylinder at the front and inserted into a correspondingly shaped recess in the holder of the hydraulic cylinder, preferably in a form-locking and / or friction-locking manner, while when loaded in the unlocking direction, the additional piston of the locking device can be removed from the recess. The lateral recess is formed in the holder and in the recess formed therein, and the connection can be automatically disconnected when the linear actuator is removed from the holder in a direction transverse to the movement direction of the drive rod. Automatic coupling of the linear actuator in the holder is made possible by means of this locking device, however a relatively expensive construction solution is proposed by using a main piston and an additional piston that can be moved additionally and independently of the main piston in the linear actuator.

[0004] The publication U.S. Patent Application Publication No. 2010 / 0199566 discloses a locking device in a holder for a linear drive, comprising a locking rod and a locking pawl that interacts with the locking rod. The locking rod is attached to a flange of the drive rod of the linear drive and is axially aligned parallel to the drive rod. The locking pawl is mounted in the holder transversely to the locking rod. The locking rod has two recesses designed as annular grooves that correspond to the end-of-travel positions of the drive rod. The diameter of the annular grooves is dimensioned so that the annular grooves can snap into the locking pawls when the linear drive is pushed into the holder and the drive rod is retracted, while the annular grooves can release from the locking pawls when the linear drive is extended. When the drive rod moves, the locking rod connected to the drive rod also moves, and the locking pawl encases this locking rod in the area between the annular grooves, so that the locking rod, and the linear drive using the locking rod, cannot disengage from the locking pawl transversely to the longitudinal axis of the locking rod.

[0005] Chinese Patent No. 110394621 discloses a method for repairing a sliding closure. It provides a sliding plate hydraulic unit for adjusting the sliding plate. A linear drive, which can be moved using a robot, can be pushed laterally into the holder. For this purpose, the holder is formed with a corresponding retaining groove into which the cylinder's retaining ring can be inserted. Plug connections are located on the rear of the holder's mounting seat and on the front of the block below the cylinder, allowing for the connection of a connecting cable that can be plugged together using a pressure lever after the cylinder is mounted. The pressure lever is pivotally held by an adjustment drive attached to the robot's clamping device and is actuated by an external force using a separate adjustment device that must be controlled externally.

[0006] According to publication WO 2017 / 033953, a drive unit having a rectangular base plate includes a push rod with a front connection, and the drive unit is releasably held on a drive unit holder by inserting the front face of the base plate into a groove in the drive unit holder. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] European Patent No. 3 424 618 [Patent Document 2] US Patent Application Publication No. 2010 / 0199566 [Patent Document 3] Chinese Patent No. 110394621 [Patent Document 4] International Publication No. 2017 / 033953 [Patent Document 5] European Patent No. 0 875 320(B1) Summary of the Invention [Problem to be solved by the invention]

[0008] The object of the present invention is to improve known slide closures in such a way that servicing of the slide closures of casting vessels can be carried out automatically and with structurally simple means, and in so doing, the operational safety of the slide closures during casting is increased. [Means for solving the problem]

[0009] This problem is solved according to the invention by at least one locking means present in each of the linear actuators and in the holder, preferably fastened together, which are developed to interact with each other in such a way that they automatically lock after or while the linear actuator is being pushed into the holder, preferably at the end of the pushing process.

[0010] According to the invention, in any case, at least one locking means is associated with the linear actuator and the holder, by which the linear actuator is automatically locked after or while being pushed into the holder, preferably at the end of the pushing process, resulting in a permanent and safe fastening of the linear actuator in the holder. The automatic locking can prevent movement of the linear actuator in the direction opposite to the pushing direction and, depending on the design, can also prevent (further) movement of the linear actuator in the pushing direction, thereby completing the pushing process.

[0011] Advantageously, the linear actuator can be unlocked in the holder, and in order to do so, an adjustment member is provided in the locking means that can be operated manually or by a manipulator. In doing so, it becomes possible to release the linear actuator with simple means, which nevertheless ensures safe locking without interference. In doing so, even when operational vibrations are present or the sliding closure is banged against, locking is always ensured and the linear actuator can be permanently prevented from coming loose from the holder.

[0012] Advantageously, one of the locking means has a movable locking element with a front part which, during locking, engages in a recess of the other locking means so as to effect this locking, the locking element being accommodated so as to be adjustably positioned preferably transversely to the pushing direction of the linear actuator. Locking without the possibility of loosening during operation is achieved by developing the interacting locking means in this way.

[0013] Conveniently, the locking means of the linear actuator comprises a guide housing, a locking element movable therein, and a spring member, the locking element being movable with its front portion by the spring member into a position projecting above the guide housing. The locking means of the holder comprises a sliding shoe with a recess, which is in sliding contact with the front portion of the locking element when the linear actuator is pushed in and / or out. Preferably, the sliding shoe is designed with an inclined sliding guide extending approximately in the pushing direction of the linear actuator for sliding contact with the front portion and the recess. In this way, the simple design of this locking means is achieved as a specific embodiment.

[0014] The recess in the sliding shoe is positioned relative to the holder in the pushing-in direction so that the front part clicks into the recess when the linear actuator contacts the stop in the holder. In this case, the pushing-in process is terminated by the stop, and locking occurs automatically at the end of the pushing-in process. In this end position, the sliding shoe and the front part in the recess are in mutual contact with the respective contact surfaces, which extend at least approximately perpendicular to the pushing-in direction of the linear actuator, so that the front part is locked in the sliding shoe. Due to this contact of the linear actuator with the stop, a further and advantageous additional capture is thereby achieved.

[0015] Linear actuators with a drive rod and a lateral flange protruding from the front side, as well as a C-shaped guide groove on the rear of the holder for receiving the drive rod and the lateral flange, are known. For example, the guide housing of the locking means is arranged laterally at the lateral flange, and the slide shoe is arranged adjacent to the C-shaped guide groove on the rear of the holder. In this way, the locking means are located in an area that substantially protects the lateral flange and the slide shoe. In principle, the reverse is also true: the guide housing can be arranged adjacent to the guide groove, and the slide shoe can be arranged laterally at the lateral flange.

[0016] Conveniently, this actuatable adjustment member is fastened transversely to the locking element of the locking means at the linear actuator and is pushed out of the guide housing through the longitudinal opening, preferably away from the linear actuator. By pushing upwards, the locking element with its front part can become disengaged from the recess in the sliding shoe and the linear actuator can become released.

[0017] Additionally, the linear actuator and the holder are each pairedly associated with at least one electrical plug element for an electrical connection line and / or at least one plug element for at least one connection line for a gaseous medium, preferably air.

[0018] The invention is also characterized in that these plug elements are arranged for automatic insertion after or while being pushed into the holder, preferably at the end of the pushing process into the linear actuator, and that the locking means are semi-automatically locked, which allows the insertion into the linear actuator to be reduced to a single movement, which can be done manually or via a robot, without the need for an additional manual connection of the plug elements.

[0019] Furthermore, when removing the linear actuator from the holder, it is only necessary to actuate the adjustment element with the locking element to unlock it, and the plug element associated with the linear actuator and the holder will automatically loosen.

[0020] On the one hand, the coupling head of the drive rod of the linear actuator can be automatically coupled to the slide rod of the slide unit by axial adjustment after or while it is being pushed into the holder, preferably at the end of the pushing process of the linear actuator into the holder. On the other hand, when the linear actuator is removed from the holder, it can be automatically moved laterally away from the coupling head from the slide rod. As a result, additional advantages are obtained in the sense of automatically servicing the slide closure.

[0021] The invention as well as other advantageous embodiments of the invention are explained in detail below by way of example using example embodiments with reference to the drawings. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view of a holder of the proposed sliding closure and a linear actuator slidable therein, each with an exemplary locking means according to the present invention. [Figure 2] FIG. 10 is a perspective view of the linear actuator being pushed into the holder before locking the locking means. [Figure 3] FIG. 10 is a longitudinal section through the locking means in the locked state, with the linear actuator pressed into the holder. DETAILED DESCRIPTION OF THE INVENTION

[0023] 1 shows the proposed sliding closure 10 with a holder 15 and a linear actuator 20 which is shown separately from the holder 15 and can slide laterally in the holder 15, the sliding closure 10 with a slider housing 12 and a sliding unit which is guided longitudinally in the holder 15, only the sliding rod 13 which passes through a side opening 16' of the holder 15 being illustrated. In addition, an insertable stroke limiting bolt 14 known per se is provided which engages in a longitudinal slot 19 in the sliding rod 13 to act as a stop for the stroke of the sliding rod 13.

[0024] Such a slide closure 10 is known per se in terms of its construction and functioning and therefore will not be specified in further detail. Such a slide closure 10 is preferably suitable for ladles for receiving molten steel for creation as a vessel in a continuous casting line. However, such a slide closure 10 can also be used at the outlets of other vessels, such as, for example, in converters, tundishes, or even furnaces in the non-ferrous metals sector.

[0025] In particular, when the vessel is used as a ladle in a continuous casting line, the linear actuator 20 is usually first pushed into this holder 15 and fastened once the ladle filled with molten metal is placed on the rotating tower on the casting platform of the continuous casting line. This can be done manually or, preferably, by a manipulator or robot arranged on the casting platform, which automatically determines the exact position of the holder 15 of the sliding closure 10 using a recognition system installed in the casting platform, and then, using a corresponding gripping device, grips the linear actuator 20, preferably designed as a hydraulic piston / cylinder, from its retracted position, guides it to the sliding closure 10 and inserts it laterally into the holder 15.

[0026] After or during pushing, preferably at the end of the pushing stroke of the linear actuator 20, the drive rod 20' of the linear actuator 20 couples with the slide rod 13 of the slide unit. Expediently, this is done automatically by displacing the pincer-shaped coupling head 11 at the front by means of the drive rod 20' against the coaxially arranged slide rod 13 of the slide unit, and by placing the slide rod 13 at its end by means of a pivotable, spring-loaded clamping jaw 21 onto the truss-head-shaped coupling flange 13', so that the pincer-shaped coupling head 11 embraces the coupling head 11 in a form-fit and / or force-fit manner. A slide closure with such a coupling is disclosed in document EP 0 875 320 B1 and will therefore not be described in further detail in this regard.

[0027] The holder 15 comprises a housing 16 with a side opening 16', a fastening flange 17 attached to the slider housing 12 at the front, and a C-shaped guide groove 18 designed in the housing 16 at the rear to receive a lateral flange 22 of the linear actuator 20. The substantially rectangular lateral flange 22 and the C-shaped guide groove 18 with two grooves arranged parallel to one another are dimensioned so that the lateral flange 22 can slide in a pushing-in direction E, with a guide surface 22' of the lateral flange 22 entering the guide groove with almost no play, up to a stop 18', at which the drive rod 20' and the slide rod 13 are coaxially aligned with each other in the same adjustment direction.

[0028] According to the invention, in both cases, locking means 30 are associated with the holder 15 and locking means 25 are associated with the linear actuator 20, which interact to lock in the holder 15 after or while being pushed into the holder 15, preferably at the end of the pushing stroke of the linear drive 20 into the holder 15.

[0029] Advantageously, an adjustment member 26 is provided in the locking means 25 for unlocking, which can be actuated manually or by a manipulator.

[0030] As can be seen in detail from FIG. 3, the locking means 25 of the linear actuator 20 very advantageously comprises a guide housing 28 laterally fastened in the transverse flange 22, a locking element 27 movable therein, and a spring member 29, the locking element 27 with its front part 27′ being movable by the spring member 29 into a starting position projecting above the guide housing 28 when the linear actuator 20 is uncoupled, as illustrated in FIG. 1.

[0031] A sliding shoe 31 is provided as the locking means 30 of the holder 15, which shoe is in sliding contact with a front part 27' of the locking element 27 when the linear actuator 20 is being pushed in or out as shown in Figure 2, and the locking element 27 is adjustably accommodated in a guide housing 28 perpendicular to the pushing direction E of the linear actuator 20. Due to this almost play-free guiding of the lateral flanges 22 by means of their guide surfaces 22' in the guide grooves 18, correct guiding of the front part 27' into the sliding shoe 31 is ensured. The sliding shoe 31 of this locking means 30 is fastened adjacent to the C-shaped guide groove 18 at the free end side 15' of the holder 15, so that it interacts with the locking element 27 of the locking means 25 when the linear actuator 20 is being pushed in and / or out. The locking means 30 or the slide shoe 31 of the locking means 30 and the holder 15 connected to the guide groove 18 can be formed integrally.

[0032] This sliding shoe 31 is designed with an inclined sliding guide 32 extending at least approximately in the pushing-in direction E of the linear actuator 20, with a connecting recess 33 for locking and receiving the front part 27' of the locking element 27, in which point locking is effected. The recess 33 in the sliding shoe 31 is designed in such a position in the holder that it is locked at the end of the pushing-in process when the linear actuator 20 reaches the lateral flange 22 at the stop 18', and this front part 27' clicks into the recess 33.

[0033] According to FIG. 3, the sliding shoe 31 in the recess 33 and the front part 27' which can click therein come into mutual contact with contact surfaces 27", 34 respectively extending approximately perpendicular to the pushing direction E of the linear actuator 20, so that the front part 27' is closed in a locking manner in the sliding shoe 31 by means of these contact surfaces 27", 34. In doing so, locking is always ensured, even when there are operational vibrations or when the sliding closure is struck, permanently preventing the linear actuator from coming loose from the holder.

[0034] The manually actuable adjustment member 26 mentioned above is fastened transversely to the locking element 27 of the locking means 25 at the linear actuator 20. The adjustment member 26 preferably extends perpendicularly away from the linear actuator 20 and out of the guide housing 28 through a longitudinal opening 28', parallel to the transverse flange 22, so that it is easily accessible for actuation. After casting is finished, the bolt-shaped adjustment member 26 is adjusted upwards, so that the locking element 27 is moved out of the recess 33, allowing the linear actuator 20 to be withdrawn from the holder 15 of the sliding closure 10. The adjustment member 26 can also be surrounded by a removable protective cap, so that it cannot be unintentionally actuated when the closure is in the open position.

[0035] For convenience, when manually removing the linear actuator, this lateral flange 22 with the handle 24 can be grasped with one hand, and the other hand can grasp the handle lever 23 placed parallel to the linear actuator at the rear side of the hydraulic cylinder, thus allowing the linear actuator to be pulled out. In this way, a simple movement of the hand makes it easy to unlock and pull out.

[0036] Furthermore, after unlocking, the coupling head 11 can also advantageously be decoupled at the front in the drive rod 20' from the slide rod 13 of the slide unit by pushing it laterally in this way away from the truss-head-shaped coupling flange 13' and out from the clamping jaw 21.

[0037] Furthermore, the suspension element 24' is arranged at the top side within the linear actuator 20, where the linear actuator can be stored when not in use. At the top side of the holder 15, there is also arranged a clip lever 46 of a handle mechanism 47, which ensures transport safety. Connection supports 39, 44 for supplying a medium for controlling the linear actuator 20 are provided laterally at the hydraulic piston / cylinder unit as the linear actuator 20 and are connected to pipes, not shown.

[0038] Additionally, several plug elements 35, 37 are associated with the holder 15 and corresponding plug elements 35' are associated with the linear actuator 20, and towards these connected connecting lines for current and / or medium, in particular towards the sliding closure 10, e.g. gas or air, is guided from a corresponding external electricity, gas or compressed air source. These connecting lines serve to supply current to at least one consumer device, such as measuring and evaluation equipment, for example for early slag detection or as induction heating, while at least one connecting line for the medium serves as a gas seal or serves for cooling, etc.

[0039] Thus, the male electrical plug element 35 is arranged at the rear end side 15' of the holder 15, and the corresponding female plug element 35' is arranged on the linear actuator 20 at the top side of the cylinder. These two plugs 35, 35' are positioned relative to each other so that they can be inserted into each other in the pushing direction E of the linear actuator. A connecting conduit 36' from the outside leads to the plug element 35' via the curved muffle 36. At least one connecting conduit, not shown in more detail, leads from the plug element 35 through the connecting muffle 40 along the holder 15 into the sliding closure and / or into the ladle. An automatic-opening protective cap 38 is illustrated at the opening of the plug element 35 through which the female plug element 35' can be inserted, which is closed when the plug element is not inserted to prevent the ingress of contaminating particles.

[0040] 1, two plug elements 37 are provided inside the stops 18' of the guide groove 18 in the holder 15, which can be inserted in pairs with a plug element not shown in more detail at the front side 42 of the lateral flange 22 when the latter is pressed in. On the one hand, connecting lines at the linear actuator 20, not shown in more detail, are led from these plug elements 37 to an external supply source, and on the other hand, connecting lines 41, 43 are led into the sliding closure 10. These plug elements 37 are preferably designed as valve plug-in parts which serve to allow the passage of gaseous media, for example air.

[0041] The present invention has another considerable advantage in that, as can be seen in Fig. 2, when or during the pushing of the linear actuator 20 into the holder 15, preferably at the end of the pushing stroke of the linear actuator 20 into the holder 15, these locking means 25, 30 automatically lock, and likewise these plug elements 35, 35', 37 automatically insert, thus establishing the connection of the connecting elements 36, 41, 43. Moreover, after or during the pushing in, preferably at the end of the pushing stroke, the drive rod 20' can be pushed forward against the coaxially arranged slide rod 13 of the slide unit, likewise automatically connecting the coupling head 11.

[0042] Rather, when the linear actuator 20 is withdrawn, these plug elements 35, 35', 37 are disengaged from one another after being unlocked by such actuation of the adjustment member 26, either manually or by a manipulator, and the coupling head 11 is then automatically loosened by being moved apart laterally by the slide rod 13.

[0043] The automatic coupling of the linear actuator 20 within the holder 15 results in very easy handling, which is suitable for robotically assembling and / or disassembling the linear actuator 20, and largely precludes faulty operation due to incorrect insertion and / or incomplete locking.

[0044] Although the present invention has been fully illustrated by the above example embodiments, the present invention can be embodied in other variations.

[0045] In principle, the locking means can also be arranged in the opposite direction by arranging a guide housing with a locking element movable therein, fastening the adjustment member to the locking element and arranging a spring member on the holder, while the sliding shoe is arranged at the linear actuator so that locking and / or unlocking can also be performed in the same direction. For space reasons, the guide housing can be fastened protruding out from the underside of the exposed end side 15' towards the holder, allowing the locking element to be moved from the bottom to the top in the locking position. When using a sliding shoe at the linear actuator, the recess faces downwards.

[0046] The locking means can obviously be designed differently from the way shown. Thus, the front part could be received in a form-locking manner in a recess of the sliding shoe, like a wedge with a corresponding self-locking contact surface. The adjusting member could also be located, for example, above the guide housing and could instead be bolt-shaped, valve-shaped, hook-shaped or designed differently.

[0047] Similarly, instead of the transverse flanges on the linear actuator and the C-shaped guide grooves in the holder, other guide means can be provided, such as slotted nuts or guide rollers. Additionally, rather than being transverse to the adjustment direction of the drive rod of the linear actuator, the pushing direction of the linear actuator can be, for example, the adjustment direction, or instead it can be pushed into the holder from the bottom and / or removed. In this case, the locking means must be positioned accordingly to realize the automatic locking and preferably manual unlocking functions.

Claims

1. A slide closure for a container holding molten metal, comprising a slider housing (12), a slide unit guided longitudinally within the slider housing (12) with a slide rod (13), and a linear actuator (20) that can be fastened not only with a holder (15) on the slider housing (12) but also within the holder (15) using a drive rod (20') that can be connected to the slide rod (13), wherein the linear actuator (20) is preferably slid within the holder (15) on the slider housing (12) in a direction laterally to the adjustment direction of the linear actuator (20), can be removed from the holder (15), and can be locked within the holder (15), At least one locking mechanism (25, 30) is present on each of the linear actuator (20) and the holder (15), preferably fastened, and the locking mechanism is developed to interact to automatically lock after or while the linear actuator (20) is pushed into the holder (15), preferably at the end of the pushing step. A slide closure characterized by the following features.

2. The linear actuator (20), locked within the holder (15), can be unlocked, and at least one of the locking means (25, 30) provides an adjustment member (26) that can be operated manually or by a manipulator for this unlocking. The slide closure according to claim 1, characterized in that

3. One of the locking means (25) has a movable locking element (27) with a front portion (27') which engages with a recess (33) of the other locking means (30) during locking, and the locking element is preferably housed in a manner that is adjustable laterally with respect to the pushing direction (E) of the linear actuator (20). The slide closure according to claim 2, characterized in that

4. The locking means (25) of the linear actuator (20) comprises a guide housing (28), a movable locking element (27) therein, and a spring member (29), wherein the locking element (27), together with its front portion (27'), can be moved by the spring member (29) into a position that protrudes above the guide housing (28), while the locking means (30) of the holder (15) comprises a slide shoe (31) having a recess (33), wherein the slide shoe is in sliding contact with the front portion (27') of the locking element (27) when pushing the linear actuator (20) when pushed in or pushed out. The slide closure according to claim 3, characterized in that

5. The slide shoe (31) has a forward portion (27') and a recess (33) for receiving the forward portion (27') of the locking element (27), and a sliding guide (32) that extends at least substantially in the pushing direction of the linear actuator to slide into contact with this recess (32). The slide closure according to claim 4, characterized in that

6. The recess (33) is positioned within the slide shoe (31) in the pushing direction (E) such that when the linear actuator (20) contacts the stopper (18') within the holder (15) at the end of the pushing process, the front portion (27') clicks into place in the recess (33). The slide closure according to claim 4, characterized in that

7. When locked, the slide shoe (31) is in contact with each of the contact surfaces (27'', 34) within the recess (33) and with the front portion (27'), and these contact surfaces (27'', 34) extend at least substantially perpendicular to the pushing direction (E) of the linear actuator, so that the front portion is locked in place within the slide shoe. The slide closure according to claim 4, characterized in that

8. The linear actuator (20) has the drive rod (20') and a protruding lateral flange (22) on its front side, the holder (15) has the lateral flange (22) on its rear side, and consequently has a C-shaped guide groove (18) for receiving the linear actuator (20), the guide housing (28) of the locking means (25) is positioned laterally at the lateral flange (22), while the slide shoe (31) is positioned at the rear (15') of the holder (15) in close proximity to the C-shaped guide groove (18), or conversely, the guide housing is positioned in close proximity to the guide groove and the slide shoe is positioned laterally at the lateral flange. A slide closure according to claim 4, characterized by the above.

9. The operable adjustment member (26) is laterally fastened to the locking element (27) of the locking means (25) of the linear actuator (20), and is pushed out of the guide housing (28) through the longitudinal opening (28'), preferably away from the linear actuator. The slide closure according to claim 8, characterized in that

10. To remove the lateral flange (22) of the linear actuator (20) from the guide groove (18) of the holder (15), the adjustment member (26) can be operated upward at the guide housing (28) by hand or by a manipulator, thereby detaching the locking element (27) with its forward portion (27') from the recess (33) in the slide shoe (31) and allowing the linear actuator (20) to be pulled out. The slide closure according to claim 9, characterized in that

11. The linear actuator (20) and the holder (15) are each associated in pairs with at least one electrical plug element (35, 35') for an electrical connection conduit, and / or at least one plug element (37) for at least one connection conduit (36, 41, 43) for a gaseous medium, preferably air, and these plug elements are automatically inserted after or while being pushed into the holder (15), preferably at the end of the pushing step of the linear actuator (20) entering the holder (15), and the locking means (25, 30) are positioned to lock semi-automatically. A slide closure according to claim 4, characterized by the above.

12. The connecting head (11) of the drive rod (20') of the linear actuator (20) can be automatically connected to the slide rod (13) of the slide unit by axial adjustment after or while it is pushed into the holder (15), preferably at the end of the pushing step of the linear actuator (20) entering the holder (15). The slide closure according to claim 11, characterized in that

13. When the linear actuator (20) is removed from the holder (15), the locking means (25, 30) can be unlocked from each other by the adjustable adjustment member (26) using the locking means (25, 30) and the plug elements (35, 35', 37) which are paired with the linear actuator (20), and the holder (15) can be automatically loosened. The slide closure according to claim 12, characterized in that

14. The connecting head (11) of the drive rod (20') can automatically detach from the slide rod (13) when the linear actuator (20) is removed from the holder (15) after the locking means (25, 30) has been unlocked by moving laterally away from the drive rod (20'). The slide closure according to claim 13, characterized in that

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