EP3053833A1 - Device for closing of metal containers with an insert lid and securing it with a clamp ring - Google Patents

Abstract

The device (1) arranged in series one above the other and partially connected to each other, a first disc-shaped body (3), a second disc-shaped body (5), a drive disc (9) and a bearing plate (15,) are mounted on which push rods (19) with which a plurality of pivoting levers (21), which are articulated on a clamping plate (23), can be actuated. By the toggle-like drive mode of the pivot lever (21), the deformation of the clamping ring (39) on the edge of the container (47) can be carried out with little force.

Description

The invention relates to a device according to the preamble of patent claim 1.

Devices for closing containers with a plug-in lid are known from the prior art. The containers are predominantly welded containers whose content is often not used up at once, ie the container must be airtight after the removal of a portion of the contents with the Einsteckdeckel again and again. For this purpose Einsteckdeckel be used, the edge of which extends axially over a relatively large height, for example 15 or 20 mm and rests flush in this area on the inside of the container opening at the top. In order to give the container and the lid edge increased rigidity and to avoid sharp edges, the edges are rolled up on the container and on the lid and formed a so-called Rollbördel. When the lid is inserted, the two flanged edges come to lie substantially radially next to one another, ie the rolled edge of the lid comes radially outside the roll edge to lie the container. The connection between the container and the inserted lid is under normal conditions a secure closure of the container dar. Since containers with capacities of up to 40 liters, such as chemical products such as paints, coatings, solvents, adhesives, potting and sealing compounds, etc., often have to be transported over long distances and overturn on the transport by careless treatment or, when stacked, can fall from a relatively large amount to the ground, in addition to the lid with the container connecting securing means must be provided. A long-known fuse is achieved by a clamping ring which comprises the flange of the container and the lid C-shaped from the outside and also engages under the inner flange of the container from below. These in cross-section C-shaped clamping rings overlap at their ends, ie the elongated length of the clamping rings is greater than the circumference of the container or the lid. In the overlap area, the two end portions of the clamping ring are connected together. In non-resealable clamping rings an opening is punched out at one end and at the other end an outwardly directed tab is formed on the clamping ring by a stamping bending operation, which protrudes through the opening to the outside. By a locking pin, the two ends are firmly connected. The reclosure of such a clamping ring is not without mechanical help possible. For this reason, clamping rings have long been known in which a formed by a lever, the two ends contracting closure, such as a turnbuckle is arranged. In contrast to the first-mentioned closure, which protrudes radially only marginally outward at the edge of the lid or container, a lever closure substantially projects beyond the periphery of the container. This means that such closed containers can not be closed with a conventional closing machine, the pivot lever the periphery of the clamping ring only slightly radially beyond. At least an alignment of the closure with respect to the closing device on the position of the turnbuckle is always necessary, which requires an additional step and also a non-symmetrical locking device and thus means a delay in closing. Also, at the Verschliesseinrichtungen corresponding reversals are to be made.

Under the name "TOP EXPAND" such a closure is known, with which it is possible to connect containers with clamping ring closure with a lever with the container by the edge of the lid together with the opening edge of the container in the closed by the clamping lever clamping ring to be expanded. But even with this device, the container before the Expanding be aligned in the closing device such that the region of the clamping lever, so the turnbuckle, is not continuously supported from the outside. Thus, there is also an additional and thus time-delaying operation by aligning the tension lock.

From the US 3,015,291 Furthermore, a closing tool for large containers (eg 10 to 30 liters) is known. This hand-operated device, which must be hung on a suspension device for weight reasons, comprises a plurality of pivotally mounted on a ring pivot levers, the C-shaped ends of the formed from a plurality of individual spaced lobes edge of the lid under the rolled edge of the container. The pivot levers are pivotable via two manually operated bars via a lever system. Since all the pivot levers have the same training, the closure of a container with a clamping ring with or without a lever lock is not possible. Such closed lid are expensive to open and they can after opening at most still plugged in, but no longer be secured.

From the EP 1 236 645 Furthermore, a method and a device for closing a container is known, the lid with a clamping ring with turnbuckle to be secured. The closure of the lid inserted into the container takes place by a peripheral peripheral role outside the container, which successively bends in several passes the edge of the clamping ring under the flanging of the lid and the container. Although it is possible to secure lid with clamping ring on containers, but this device can only be operated in a working area surrounded by a protective fence. The revolving roller projects beyond the periphery of the lid and container, and endangers nearby persons at high speed through its repeated circulation. In addition, the lid and the container is deformed by the punctual radial force or it must be provided on the locking device very stable holding parts to prevent deformation of the entire container and thereby the tightness of the lid affecting deformation.

An object of the present invention is to provide a device with which Einsteckdeckel with clamping rings with or without a turnbuckle, which is tensioned by a radially projecting lever without aligning the turnbuckle or the device directly after putting the lid together with it already definitely mounted clamping ring on the edge of the container by deforming the lower edge of the clamping ring below the roll crimp located in the clamping ring can be secured to the container and the lid.

This object is achieved by a device according to the features of claim 1. Advantageous embodiments of the device are described in the dependent claims.

By using a variety arranged on the periphery of a disc to horizontal lying tangentially extending axes, swivel lever succeeds any kind of clamping rings and, regardless of the position of the turnbuckle, the lower leg of the clamping ring along its entire circumference in one operation plastically deform and press from bottom to top of the adjacent flanges of lid and container. In one operation or the same stroke of a pneumatically or hydraulically actuated support plate, the lid is secured to the container with an attached thereto and already tightly closed by the clamping lever and secured with a split pin clamping ring. Due to the substantially radially from the outside inwards and from bottom to top extending movement of the lever ends, the position of the clamping lever on the turnbuckle on the clamping ring is immaterial, that is also in the region of the clamping lever of the clamping ring is pressed against the flare. This allows the stacked brought cover with clamping rings so, as the clamping rings are straight, brought to the container and then placed axially on this. Due to the mutual connection between the insertion and retention plate for placing or pushing the lid into the opening on the container and the clamping disk with the hinged levers and the drive plate, which causes the pivoting of the lever, is only a single vertical feed movement of a hydraulic - or pneumatic cylinder necessary. The same applies after closing when the closing device returns to the starting position. The deformation and bending of the clamping ring takes place at any point along the circumference of the container at the same time, whereby no uneven forces acting on the container, the lid and the clamping ring, act. The closing process takes place in one operation when lowering the closing device on the container with the lid and clamping ring.

Figur 1

eine perspektivisch aufgeschnittene Darstellung einer Vorrichtung zum Verschliessen von Metallbehältern, teilweise in Schnittdarstellung,

Figur 2

eine perspektivische Darstellung der Vorrichtung von schräg unten,

Figur 3

eine Seitenansicht eines Verschlusshebels in Offenposition mit Deckel und Spannring (Behälter weggelassen),

Figur 4

eine Seitenansicht eines Verschlusshebels in Offenposition mit eingesetztem Deckel und Spannring nach Beginn des Verschliessvorgangs und

Figur 5

eine Seitenansicht eines Verschlusshebels in Offenposition mit eingesetztem Deckel und Spannring am Ende des Verschliessens.

Reference to an embodiment with a clamping ring with a cam lock, the invention will be explained below. Show it:

FIG. 1

a perspective cutaway view of a device for closing metal containers, partially in section,

FIG. 2

a perspective view of the device obliquely from below,

FIG. 3

a side view of a locking lever in the open position with lid and clamping ring (container omitted),

FIG. 4

a side view of a locking lever in the open position with inserted cover and clamping ring after the start of the closing and

FIG. 5

a side view of a locking lever in the open position with inserted lid and clamping ring at the end of the closing.

In the perspective view in FIG. 1 the device 1 is shown for closing and securing with a clamping ring 39 of containers. The device 1 comprises an upper disk-shaped body 3 and a lower disk-shaped body 5 spaced thereunder, on which the actuators for the device 1 are fastened and guided. The two disk-shaped body 3, 5 are mutually connected by means of screws 7 spaced and form together with a between the bodies 3, 5 arranged hollow cylindrical wall 12 and acting as a piston drive pulley 9, which peripherally rests sealingly against the wall 12, a double-acting pneumatic actuator. On the top of the upper body 3, a mounting coupling 6 is visible, with which the device 1 is held suspended from a frame (not shown). The drive pulley 9 is guided vertically displaceably in the displacement 10 with compressed air. The displacement 10 is formed by the hollow cylindrical wall 12 and the underside of the upper body 3 and the upper side of the lower body 5. On the periphery of the drive pulley 9, a piston seal 8 is placed to separate the two divided by the drive pulley 9 sections of the displacement 10 sealed. The supply of compressed air in the piston chamber 10 via compressed air lines 14,16. In the bottom and the ceiling of the displacement 10 forming two disc-shaped bodies 3,5in FIG. 1 only the connecting pieces of the two compressed air lines 14,16 are visible. As an alternative to compressed air, a hydraulic or an electric drive could also be used. Due to the relatively large piston cross-section, which corresponds approximately to the cross-section of a container 47, an immense adjusting force can be generated with compressed air from the existing factory network.

Further, the drive pulley 9 via one or more piston or guide rods 11, which penetrate the lower body 5, connected to a displaceable on a vertically disposed guide, preferably annular bearing plate 15. On the bearing plate 15 a plurality of tangentially located lever bearings 17 are peripherally attached to the periphery thereof.

In each lever bearing 17, the first end of a push rod 19 is pivotally mounted on a bearing pin in a bore 18 with axis A. The second ends of the push rods 19 are pivotally connected to pivot levers 21 about an axis B. The two-armed pivot lever 21 are in turn hinged on an axis C pivotally mounted on a circular clamping plate 23 which is equipped on its underside with a plurality of spacer bolts 25, at the lower end of a lid retaining plate 27 is attached (see. Figures 3-5 ).

The clamping plate 23 with the hinged pivoting levers 21 is attached to the lower end of a support column 24, which support column 24 is connected at its upper end to the underlying disk-shaped body 5. On the support column 24, the bearing plate 15 is guided vertically displaceable.

The pivot lever 21 have the shape of one with a base leg 29, a closing leg 37 and a centrally arranged bearing leg 35 upside down "F" on. On the long leg 29 of the pivot lever 21 is at the foot 31 (foot overhead) a bearing bore 33 is formed as a pivot bearing. At the head of the "F" (head lying down) is at right angles to the long leg 29 extending the forming and closing leg 37 is formed. With its inner ramp-shaped rising guide surface 38 of the pivot lever 21 is adapted to form a clamping ring 39 which is placed on the flanges on the lid 43 and the container 47 in the axial direction from bottom to top so that the lower leg 39 'of the clamping ring 39 is bent from the initially inclined to the horizontal standing position substantially in the horizontal. In order to fully engage under the clamping ring 39 in the range of a turnbuckle with clamping lever 45, the length of the closing leg 37 is greater than the radial distance between the surface of the clamping lever 45 and the jacket of the container 47. It should be noted here that the clamping ring 39 made of sheet steel with a thickness of 1-2 mm. Consequently, very high forces for the plastic deformation are necessary.

Between the foot 31 and the head 35 of the pivot lever 21, a shorter bearing leg 40 is further formed with a bore 41 arranged offset to the bearing bore 33. In the bore 41, which is a pivot bearing forms the axis C, a pin 42 is inserted, which is carried in the clamping plate 23 tangentially to this extending in a protruding from the clamping plate 23 tab 44.

Next is in the Figures 3 . 4 and 5 the lid 43 for closing the container 47 is shown. The container 47 is in FIG. 1 indicated by dash-dotted lines. The lid 43 is formed as a Einsteckdeckel. On the upper edge, which is crimped, the clamping ring 39 is already placed with C-shaped cross-section and held by the closed clamping lever 45 securely on the flange of the lid edge fitting. The lid 43 and the clamping ring 39 attached thereto are delivered as a unit to the device 1 and applied to the container 47 and inserted into this. The closed clamping lever 45 is preferably already secured with a split pin, which is only removed again when opening the container 47 for the removal of filling material.

The drive pulley 9 is formed in the vertical direction by supplying compressed air through the conduit 16 in the upper piston chamber displaced downwards. The guide rod 11, which is connected to the drive pulley 9, thereby leading the retaining plate 27 down until it rests on the clamping ring 39 and is prevented from further downward movement.

The device 1 is suspended with a mounting coupling 6 on a frame (frame not shown). The frame, in addition to the device 1, can also carry a feed underneath the device 1, e.g. a roller belt, for filled containers 47. The frame is known from existing plants and is therefore not described in detail.

Hereinafter, the operation of the device will be described step by step. After filling the containers 47 with a filling material, e.g. Paint, plaster or glue, these z. B. by a robot or by hand under the device 1 and there, or even before, the lid 43 is placed. On the lid 43, the clamping ring 39 is already attached and the turnbuckle is closed and secured. After placing the lid 43 together with clamping ring 39, the latter engages above the one hand, the bead of the lid 43 and thus also the flange on the container 47, which lies within the flange of the lid 43. The cross-sectionally C-shaped clamping ring 39 rests with its upper leg on the flaring and the lower leg 39 'of the clamping ring 39 projects obliquely downwards, the bead on the container 47 is not under attack, not previously the placement of the lid 43 to hinder the container 47.

After positioning the container 47 under the device 1 with the lid 43 inserted therein by introducing compressed air through the line 16 into the displacement above the drive pulley 9 the latter moved down. With the attached to the drive pulley 9 guide rods 11 is synchronously also the bearing plate 15 which is attached to the lower end of the guide rods 11, moved down. Also guided down the clamping plate 23 and attached to this bottom retaining plate 27. The clamping plate 23 and the retaining plate 27 are guided vertically on the column 24. The clamping plate 23 and the retaining plate 27 hang, connected to the push rods 19 and pivot levers 21, on the bearing plate 15. When lowering the bearing plate 15, the underneath attached clamping plate 23 and the retaining plate 27 lower by its own weight down. Once the retaining plate 27 on the lid 43 and the clamping ring 39 comes into abutment and thus relative to the bearing plate 15 now stands still, the bearing plate 15 lowers further, only now start the pivot lever 21, still driven by the push rods 19, to to pivot the axis C. Before the further lowering of the bearing plate 15, the connecting line of the axes AB is at an obtuse angle to the connecting line of the axes BC. The pivoting movement is initially very fast, since the push rods 19 are at an acute angle to the long legs 29. As soon as the pivot levers 21 or their long legs 29 have approximately reached the vertical position, the speed slows down At this time, the closing legs 37 with their guide surfaces 38 successively engage underneath the clamping ring 39 or its obliquely downwardly projecting leg 39 'and press it by plastic deformation on the rolling flange. The front ends of the closing leg 37 make during this period, a bottom-up movement. In the final position of lowering of the bearing plate 15, the guide surface 38 is in full contact on the one hand on the clamping ring 39 and the lower circumferential leg 39 'in full contact with the roll flange of the container 47th The line connecting the axes AB is now at an acute angle in line the axes BC. A lifting of the lid 43 from the container 47 is then no longer possible and can only be done by opening the clamping ring 39.

By discharging the air in the upper displacement part above the drive pulley 9 and supplying compressed air through the lower compressed air line 14, the pivot lever 21, d. H. they swing outward and at the same time the retaining plate 27 lifts off from the container 47 and it can be carried away the closed and secured container 47 and a new one to be supplied.

Alternatively to a supply of compressed air through the compressed air line 14 to the underside of the drive pulley 9, below the drive pulley 9 a compression spring, be used as a coil spring or a spring ring package, which causes the return of the drive pulley 9. Of course, when using a spring when closing and securing the lid, a higher force on the top of the drive pulley 9 is required.

Claims (9)

Device (1) for closing containers (47) made of metal with a plug-in cover (43) and a clamping ring (39) securing the plug-in cover (43) to the container (47) against unintentional opening, with a closure element formed on the clamping ring (39) comprising a drive for a closing device, which comprises the lid (43) inserted into the container (47) and the clamping ring (39) placed on the cover (43) and already closed to a rolling edge formed on the container opening by reshaping the clamping ring (39 ),
characterized, - That the drive comprises an upper disk-shaped body (3) and a lower disc-shaped body (5) and a hollow cylindrical wall (12) which is inserted between the two bodies (3, 5) and forms with these a displacement (10), in which a drive disk (9) acting as a piston is inserted and connected to a bearing plate (15) of the closing device. Device according to claim 1, characterized in that - That the closing means comprises the bearing plate (15) which is vertically displaceable by the drive along a guide, - That the bearing plate (15) is connected to a coaxially underlying clamping plate (23), - That at the periphery of the clamping plate (23) pivot lever (21) are articulated pivotable about an axis C, each with a closing leg (37), - That the pivot lever (21) by peripherally on the bearing plate (15) pivotally hinged about axis A push rods (19) are connected and form a knee joint, - That below the clamping plate (23) and connected to this a retaining plate (27) is arranged, and - That the retaining plate (27) for resting on the clamping ring (39) acts to support it against the upward-acting closing force of the pivot lever (21). Device according to one of claims 1 or 2, characterized in that the pivot lever (21) have the shape of an inverted "F", wherein at the foot (31) of the long closing leg (29) has a bearing bore (33) with axis B and at right angles to the Long closing leg (29) lying central leg (40) has a bore (41) is formed with axis C. Apparatus according to claim 3, characterized in that the lying at the head of the "F" long closing leg (37) on its inner side a guide surface (38) which is formed against the free end as an ascending ramp. Device according to one of claims 2 to 4, characterized in that the connecting line X between the axes A and B and the connecting line Y between the axes B and C before the beginning of the closing process at an obtuse angle and at the end of the closing operation at an acute angle to each other lie. Device according to one of claims 4 or 5, characterized in that the guide surfaces (38) of the pivot lever (21) engage under the lower leg (39 ') of the clamping ring (39) at the end of the closing operation and move it from bottom to top and to the Put the rolled edge on the container (47). Apparatus according to claim 6, characterized in that the length of the closing leg (37) is greater as the distance of the largest radial extent of the turnbuckle with the clamping lever on the clamping ring (39) from the jacket of the container (47). Device according to one of claims 1 to 7, characterized in that the body (3,5) have a diameter which corresponds approximately to the diameter of the container (47) to be closed. Device according to one of claims 1 to 7, characterized in that in the upper body (3) and / or lower body (5) a compressed air line (14,16) opens, by which compressed air above and / or below the drive pulley (9) in the displacement (15) can be introduced.

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