EP0806288A1 - Press, especially for compressing plate-like workpieces - Google Patents

Abstract

At least two benches - one a fixed (3) bench and the other a lifting (2) platform - adjoin a pressure chamber (4). The press (1) has a coupling system (11) for at least one press (1a,1b) over or under it. The connection has at least one plug-in part in at least one bench for a passage through. The benches can be in at least two pieces and have superimposed work tops (7,8) whose hollow interiors contain honeycombed reinforcement ridges (14). The benches may be arranged with a permeating opening (11), and that the coupling system may have five openings.

Description

The invention relates to a press, in particular for pressing plate-shaped workpieces with the features of the preamble of patent claim 1.

Presses with a pressure chamber are known, in particular for pressing plate-shaped workpieces.

In addition, presses with a fixed press table are known which have a pressure chamber on both sides, i.e. a pressure chamber delimited by the fixed press table and a movable lifting table arranged above and below. As a rule, these pressure chambers can be opened and closed independently of one another, so that these pressure chambers can be fed with pressed material independently of one another in order to be able to process the pressed material independently of the second pressure chamber.

However, it is often necessary for work-related reasons to have to process more than two batches of pressed material in different cycles, i.e. different pressures or different dwell times, in particular with regard to continuous further processing, that is to say always to provide sufficient pressing space in the case of continuous delivery to the press can to each to be able to press the corresponding delivered batches.

The conventional presses offer, on the one hand, the possibility of arranging different, described presses next to one another or in series with only one pressure chamber, this being associated with a considerable economic disadvantage, i.e. it requires an immense amount of space and the associated high costs, both in terms of the space required and the transport routes that result.

The press described above having two pressure chambers alleviates the problem without actually eliminating it.

Another solution is a so-called multi-daylight press, which should offer the possibility of opening individual pressure rooms independently of one another.

Finally, presses are known in which a lifting table is arranged between two fixed pressing tables, so that two adjacent pressure spaces can be opened and closed alternately with one another.

Here, too, an attempt is made to provide a press that offers the possibility, e.g. to be able to process continuously fed material to be pressed, the material being pressed in one pressure chamber while the other pressure chamber can be loaded or emptied.

All these presses, however, have in common that the user has to plan the expected capacity when planning or buying the press, ie he can acquire a press of various designs, but without the possibility of a simple and therefore more practical one and to have inexpensive retrofitting or upgrading, ie a needs-based design of the press.

In addition, these presses are characterized by a high unwanted space requirement.

The invention is therefore based on the object of providing a press, in particular for pressing plate-shaped workpieces, which is characterized by a small space requirement with high efficiency and the possibility of stacking, i.e. Stratification of two or more presses on top of each other without requiring a great deal of design effort and this while maintaining the possibility of controlling the individual presses, i.e. Maintaining the individual press advantages and ultimately the possibility of easy disassembly, i.e. the possibility of separating the layered presses again, i.e. a needs-based design.

This object is achieved in a press of the type mentioned with the features of the characterizing part of patent claim 1. Further advantageous embodiments of the invention are the subject of subclaims 2 to 28.

Characterized in that according to the invention the press has a device for coupling to at least one further press to be arranged above and / or below it, it is possible to couple the press by simply coupling or stacking with other presses according to the invention such that the presses in Layering can be arranged on top of one another without the functionality of any of the presses arranged in this way suffering. Rather, the usual usability of the individual presses is still guaranteed and this can be carried out in the smallest possible space, as well as in the possibility of feeding material to different pressure chambers or pressure rooms at this work station can and during the pressing process, ie the processing of a batch, already supply another press with material to be processed, without this material having to be fed to a work station positioned at a different location, ie a single press.

In addition, the press according to the invention offers the possibility of increasing the workstation as needed, i.e. There is no need as previously to provide a press designed for the growth of the material to be processed at the planning stage, i.e. to commit themselves at this stage and / or tie up capital unnecessarily.

Rather, as already explained, the modular workstation can be upgraded piece by piece, i.e. be adjusted as needed.

If the device to be coupled presses is positioned and absorbing shear forces, this ensures a precisely fitting and secure fit of the presses to be stacked or stacked on top of one another in a modular design, without the need for significant or constructively complex retrofitting or retrofitting work.

If the device has at least one opening designed to be pluggable, arranged in at least one table and at least partially penetrating this opening, a press is thereby provided in which the devices for coupling to further presses are designed in such a way that the further presses are very simple with one another but can be connected all the more effectively and at the same time experience forced positioning without the need for a common machine frame, that is to say that every upgrade or disassembly results in a structural modification of the entire system.

If the opening is completely penetrating the table, this enables flexible use of the table in the press, i.e. the table or parts of the table can be used as both a lower and an upper table.

If the device has five openings, this ensures a firm fit on the one hand and an optimal positioning of the presses to be arranged one above the other.

If the openings are at least arranged in the tables delimiting the pressure chamber and the openings are designed as bores and the plug-in means are designed as bolts to be inserted precisely into the bores, then a design is selected which on the one hand enables maximum precision and on the other hand is simple and thus guarantees economic construction.

If the tables are designed in several pieces, and in particular in two pieces, this results in a maximum of flexibility when using the tables, i.e. with a minimum of design effort, a maximum of variety is possible.

If the tables have two table tops to be arranged one above the other and the table tops of a table are designed to complement one another, the table tops facing one another of the tables delimiting the pressure space being of the same design and the table tops facing away from one another of the tables delimiting the pressure space also being of the same design, so this creates the possibility of being able to dispense with the mutually facing table tops of the tables of the presses arranged one above the other, for example with appropriate stratification of several presses, so that, for example, the table tops of the presses, which then adjoin one another and which delimit the pressure chambers arranged one above the other, complement one another without the individual presses merging, i.e. their mode of operation and working possibilities and, moreover, the overall height of those to be stacked is achieved Presses is reduced overall, ie the individual presses according to the invention ensure optimum variability with a minimum overall height.

If the individual table tops forming the tables are both adjacent to and away from the pressure space and configured to form the tables, this feature also contributes to a high degree of flexibility with regard to the connectivity and also the design of the press according to the invention.

If the table top is hollow and it has reinforcing ribs in its interior, which are in particular honeycomb-shaped, then plates and tables are provided which are characterized by high stability and low weight, so that a press with a relatively low weight is provided becomes. This brings with it considerable constructive and economic advantages both in the manufacture and in the transport, in the installation and ultimately in the event of any stacking of the presses.

If the honeycomb-shaped reinforcing ribs are at least partially welded to one another at their mutually contacting webs, this reinforces the individual table tops with the least amount of work.

If four devices, which apply a pressure to the pressure chambers, are provided, the device is provided with pulling and / or guide rods and the pulling and / or Guide rods arranged the lifting table with it in operative engagement, so this enables the lifting table to be guided by the device itself, which means that the pressing pressure is applied, ie the lifting table is moved without tilting, without the need for external, ie additional guides, that is to say, constructive configurations are also selected here , which enable an extremely compact design of the press.

If the fixed table has guides guiding the pull and / or guide rods, the devices have a pressure cylinder, the pressure cylinder is in operative engagement with the pull and / or guide rods via piston rods and the pressure cylinder is on or in the fixed table with the piston rod is set pointing away from the lifting table, it is also achieved in that the device for generating a pressing pressure is arranged in a space-saving manner, ie Here, too, a constructive design is chosen which is characterized by a low constructive effort combined with high efficiency and compact construction.

If the side of the lifting table facing the pressure cylinder has an opening which can be accommodated coaxially to the pressure cylinder and if the opening is a hole penetrating at least the table top of the lifting table adjacent to the pressure chamber, this creates the possibility of not arranging the device laterally on the tables have to attach, but rather within the effective range or the lifting range of the lifting table, ie with the smallest space requirement and at the same time high efficiency.

If the area of the second table top forming the table adjoining the bore has a notch, then the necessary freedom of movement for the pulling and / or guide rods within the tables is ensured, ie there is no need to attach the pulling and / or Guide rods outside the tables, so that here too a constructive solution is selected which ensures the compact design of the press according to the invention.

If the bore is provided with a slot which extends over the entire bore height, this ensures that supply lines arranged on the pressure cylinder are not damaged when the lifting table is moved accordingly, i.e. the supply lines can be arranged in the simplest way on the pressure cylinder without the risk of damage.

If the table tops have four bores each for receiving a printing cylinder and the bores of the table tops are offset from the bores of the further table tops forming the table tops, it is thereby achieved that the table tops can be manufactured in series and presses despite the economically favorable manufacturing possibility can be provided with printing cylinders arranged in different positions, in particular with regard to stacking the presses, so that the presses to be stacked one above the other have offset printing cylinders.

If the table top four has notches that allow the pull and / or guide rods to be fastened as well as movability of the pull and / or guide rods along with facial expressions, and if the notches of the table tops are offset from the notches of the other table tops that form the table, this is also done achieved by ensuring that despite near-series or series production of the individual table tops and the associated inexpensive configuration of the press, the necessary freedom of movement of the pull and / or guide rods and the associated facial expressions is ensured, in particular when the pressure cylinder is offset.

Fig.1

eine Seitenansicht der erfindungsgemäßen Presse entsprechend eines ersten Ausführungsbeispieles je hälftig dargestellt in geschlossener und geöffneter Position,

Fig.2

eine schematische Draufsicht mit Teilschnitt des oberen Tisches aus Fig.1,

Fig.2a

eine Detailansicht der Versteifungswabe aus Fig.2,

Fig.3

eine Seitenansicht der erfindungsgemäßen Presse entsprechend eines zweiten Ausführungsbeispieles je hälftig dargestellt in geschlossener und geöffneter Position,

Fig.4

eine schematische Draufsicht mit Teilschnitt des oberen Tisches aus Fig.3,

Fig.5

eine Einzelteilzeichnung eines Tisches mit Teilschnitt mit innenliegenden Zylinderaufnahmen in Draufsicht,

Fig.6

einen Schnitt nach Linie B-B aus Fig.5,

Fig.7

eine Einzelteilzeichnung einer Tischplatte mit Teilschnitt mit ausliegenden Zylinderaufnahmen in Draufsicht,

Fig.8

einen Schnitt nach Linie B-B aus Fig.7,

Fig.9

eine perspektivische Explosionszeichnung der Tische mit Pressenfuß entsprechend des ersten Ausführungsbeispieles der Presse gem. Fig.1,

Fig.10

eine perspektivische Explosionszeichnung des Tisches mit Pressenfuß entsprechend des zweiten Ausführungsbeispieles der Presse gem. Fig.3,

Fig.11

eine Detailzeichnung des Kraftumlenkungs- und Führungssystems in Seitenansicht bei geöffnetem Druckraum,

Fig.12

eine Detailzeichnung des Kraftumlenkungs- und Führungssystems in Seitenansicht bei geschlossenem Druckraum,

Fig.13

eine Detailzeichnung des Kraftumlenkungs- und Führungssystems in Seitenansicht gem. Fig.11,

Fig.14

eine Detailzeichnung des Kraftumlenkungs- und Führungssystems in Draufsicht gem. Fig.11,

Fig.15

eine Detailzeichnung eines am Tisch angeordneten Pressenfusses in Seitenansicht,

Fig.16

eine Detailzeichnung eines am Tisch angeordneten Pressenfusses in Draufsicht,

Fig.17

eine Detailzeichnung des Pressenfusses in Seitenansicht aus Fig.15,

Fig.18

eine Detailzeichnung des Pressenfusses in Draufsicht aus Fig.16 und

Fig.19

eine Seitenansicht dreier übereinander angeordneter und kombinierter Pressen entsprechend des ersten und zweiten Ausführungsbeispieles je hälftig dargestellt in geschlossener und geöffneter Position.

In the drawing, two exemplary embodiments of the press according to the invention, in particular for pressing plate-shaped workpieces, are shown schematically, and that shows

Fig. 1

3 shows a side view of the press according to the invention, each shown in half in the closed and open positions,

Fig. 2

2 shows a schematic top view with a partial section of the upper table from FIG. 1,

Fig.2a

2 shows a detailed view of the stiffening honeycomb from FIG. 2,

Fig. 3

a side view of the press according to the invention according to a second embodiment, each shown in half in the closed and open position,

Fig. 4

2 shows a schematic top view with a partial section of the upper table from FIG. 3,

Fig. 5

an individual part drawing of a table with partial section with internal cylinder receptacles in plan view,

Fig. 6

4 shows a section along line BB from FIG. 5,

Fig. 7

an individual part drawing of a table top with partial section with exposed cylinder receptacles in plan view,

Fig. 8

4 shows a section along line BB from FIG. 7,

Fig. 9

an exploded perspective view of the tables with press foot according to the first Embodiment of the press acc. Fig.1,

Fig. 10

a perspective exploded view of the table with press foot according to the second embodiment of the press acc. Fig. 3,

Fig. 11

a detailed drawing of the power deflection and guidance system in side view with the pressure chamber open,

Fig. 12

a detailed drawing of the power deflection and guidance system in a side view with the pressure chamber closed,

Fig. 13

a detailed drawing of the power redirection and guidance system in side view. Fig. 11,

Fig. 14

a detailed drawing of the power redirection and guidance system in plan view gem. Fig. 11,

Fig. 15

a detailed drawing of a press foot arranged at the table in side view,

Fig. 16

a detailed drawing of a press foot arranged on the table in plan view,

Fig. 17

a detailed drawing of the press foot in side view from Fig. 15,

Fig. 18

a detailed drawing of the press foot in plan view from Fig.16 and

Fig. 19

a side view of three superimposed and combined presses according to the first and second embodiments, each shown in half in the closed and open position.

As can be seen in FIG. 1, the press 1 according to the invention has a pressure space 4 delimited by an upper and lower table 2, 3.

In the present exemplary embodiment, the lower table 3 is supported by press feet 5 at a distance from the floor 6.

This lower table 3 is a fixed table, i.e. around a table 3 which remains in position, whereas the upper table 2 is designed as a so-called lifting table, i.e. 1, between an upper open and a lower closed position can be moved by means of hydraulic devices 24 to be described in more detail.

The tables 2, 3 are designed in two pieces in the present exemplary embodiment, i.e. both the lower and the upper table 2, 3 each have two plates 7, 8.

The individual plates 7, 8 are provided with openings 11 shown in FIG. 2, wherein in the present exemplary embodiment each of the table plates 7, 8, as can be seen from FIGS. 5 and 7, has five openings 11.

By means of these openings 11, the table tops 7, 8 can be connected to one another with a precise fit by means of a plug connection, these plug connections absorbing transverse forces that occur.

As can also be seen from FIGS. 1 and 2 and 5 and 6, the individual table tops 7, 8 each consist of an upper and lower cover 12 made of steel, a peripheral frame 13, also made of steel, and between the upper and lower cover 12 and framed by the peripheral frame 13 honeycomb, in here present exemplary embodiment made of steel reinforcement 14.

As shown in Fig. 2a, the honeycomb reinforcement 14 consists of individual so-called honeycomb rows 15, which are designed in two pieces, i.e. from two complementary honeycomb parts 16, 17, which are welded to one another at their mutually facing and in contact webs 18, as well as on the upper and lower cover 12 of the individual table tops 7, 8.

As can also be seen in FIGS. 1 and 2, the individual table tops 7, 8 have hydraulic cylinder receptacles 19; 20 which are arranged in the table tops 7, 8, the hydraulic cylinder receptacles 19, 20 being a table 2 in the present exemplary embodiment 3 forming plates 7,8 are arranged offset to one another, ie In the present exemplary embodiment, as can be seen from FIGS. 2 and 9, the hydraulic cylinder receptacles 19 of the upper and lower table top 7 of the upper and lower table 2, 3 are arranged at a smaller distance from the axis of symmetry 21 than the one in which, respectively, below or Table top 8 of the upper and lower table 2, 3 arranged above.

As can be seen both in FIGS. 1, 2 and 3 and in particular in FIGS. 9 and 10, the other of the two plates 7, 8 forming a table 2, 3 each have one of the hydraulic cylinder receptacles 19, 20 of the other plate 7.8 opposite opening or notch 22.23.

As can be seen in FIG. 9, the plate 7 opposite the plate 8 which has the hydraulic cylinder receptacle 20 in the corner area is provided with a notch 22 in its corner areas, while the plate 7 which has the hydraulic cylinder receptacle 19 is at a smaller distance from the axis of symmetry 21 7 opposite Plate 8 in the region of the hydraulic cylinder receptacle 19 located above or below it, in the present exemplary embodiment, has openings 23 that are largely rectangular.

The press feet 5 are designed to be compatible with the hydraulic cylinder receptacles 19; 20, so that the press feet 5 can be positioned in the hydraulic cylinder receptacles 19 present in the lower plate 7, 8 of the lower table 3 or, according to the second exemplary embodiment, hydraulic cylinder receptacles 20 around the press 1 to position or support at a distance from the floor 6.

In a second exemplary embodiment corresponding to FIGS. 3 and 4 or FIG. 10, the hydraulic devices 24 are in contact with the hydraulic cylinder receptacles 19 arranged at a smaller distance from the axis of symmetry 21, i.e. the hydraulic devices 24 are arranged at a smaller distance from the axis of symmetry 21 than in the exemplary embodiment according to FIGS. 1 and 2 or 9, in which the hydraulic devices 24 are in operative engagement with the hydraulic cylinder receptacles 20 arranged in the corner regions.

According to the second embodiment, the upper plate 7 of the upper table 2 of the embodiment 1, gem. 1, now the lower plate 7 of the upper table 2, the same applies to the other plate 8 or other plates 8 of the lower table 3, ie the orders of the plates 7, 8 are changed insofar as that in accordance with the first exemplary embodiment . Fig.1 outer plates 7 now delimit the pressure chamber 4., ie are arranged facing each other and the previously inner plates 8 now form the outer plates 8.

Otherwise corresponds to the press 1 according to the second embodiment. 3, 4 and 10 the structure of the first embodiment described above. 1, 2 and 9, in particular with regard to the design of the individual plates 7, 8.

11, 12, 13 and 14 show in detail the arrangement of the hydraulic device 24 in accordance with the first exemplary embodiment according to FIGS. 1, 2 and 9.

11 shows the press 1 with its upper table 2 and lower table 3 in the open state, while FIG. 12 shows the press 1 in the closed state.

The hydraulic device 24 will be explained in more detail with reference to FIG. 13.

As already described above, the upper table 2 consists of an upper plate 7 and a lower table plate 8 and the lower table 3 consists of an upper plate 8 and lower plate 7.

In the present exemplary embodiment, the press according to the invention has four hydraulic devices 24 which are arranged in the outer edge region of the tables 2, 3, i.e. each press 1 has four hydraulic devices 24.

As can be seen in FIG. 13, the hydraulic devices 24 have a pressure cylinder 25 which, in the viewing direction FIG. 13, below the hydraulic cylinder receptacle 20 of the upper plate 8 of the lower table 3 to the upper plate 8 of the lower table 3, on which the Pressure chamber 4 side is flanged by means of conventional means 26.

The piston rod 27 points, as can be seen, inter alia, from FIGS. 1, 3, 11, 12 and 13, downward in the direction of view FIG Pressure chamber 4, as can be seen from FIG. 11, in the retracted position and when the pressure chamber 4 is closed, as can be seen from FIG. 12, in the extended state.

At its end facing away from the pressure cylinder 25, the piston rod 27 has a yoke 28, via which two guide rods 29 are coupled to the piston rod 27.

The guide rods 29 serve at the same time for power transmission or deflection onto the upper table or lifting table 2.

For this purpose, they penetrate the upper plate 8 of the lower table 3 by means of appropriately designed guide bores 30 arranged parallel to the hydraulic cylinder receptacle 19, 20 or on a plane with the center line 31 thereof.

The ends of the guide rods 29 facing away from the yoke 28 penetrate guide bores 32 arranged in the lower plate 8 of the upper table 2 and end at a distance from the upper side 33 of the lower plate 8 of the upper table 2 facing away from the yoke 28.

The guide and power transmission rods 29 are on the lower plate 8 of the upper table 2 on both sides, i.e. both on the top 33 and on the bottom 34 of the lower plate 8 of the upper table so that a vertical displacement of the guide rods 29 inevitably results in a displacement of the upper table 2.

In the position shown in FIG. 13, the piston rod 27 is in a retracted position, so that the pressure chamber 4 is in the open position.

If there is now a downward movement of the yoke 28, that is to say an extension movement of the piston rod 27 this leads to the fact that the upper table 2 is caused by the guide / power transmission rods 29 to a downward movement in the direction of view Fig.13, which is shown in its end position in Fig.12.

With a reverse direction of movement of the piston rod 27, the pressure chamber 4 then opens into the position shown in FIGS. 11 and 13, i.e. for a complete opening of the pressure chamber 4.

The yoke 27 moves, as shown in Fig. 13, in this position into the area of the lower plate 7 of the lower table 3, i.e. in the area of the notch 22.

The devices shown in FIG. 13 and used to fix the guide rods 29 on the lower plate 8 of the upper table 2, in the present exemplary embodiment nuts 10, are arranged in the notch 22 of the upper plate 7 of the upper table 2.

Due to the press feet 5 shown in FIGS. 1 and 3, there is sufficient freedom of movement of the yoke 28 below the lower table 3.

As can be seen from FIGS. 1, 2, 3, 4, and 9, 10 and 11, 12, 13, the hydraulic cylinder receptacles 19, 20 are provided with a slot-like opening 36, the width of which is designed such that corresponding Supply lines such as hydraulic fluid connections 37 can be brought through these slots 36 to the pressure cylinder 25 and it is ensured that when the upper table is moved down to the position shown in FIG. 12, the upper hydraulic connection 37, for example, is passed through the slot 36 without it this leads to damage to the connection 37.

The previously described configuration of the hydraulic device 24 also applies to the embodiment 2, i.e. 3, the difference being only in the corresponding arrangement of the hydraulic device 24, i.e. in the smaller distance to the axis of symmetry 21 of the press 1, as well as the different arrangement of the table tops 7, 8.

Here, the yoke 28 does not move into the notches 22 of the lower plate 7 of the lower table 3, but rather, according to FIG. 3 and FIG. 10, into the largely rectangular openings 23 of the lower plate 8, the nuts 10 for fixing the Guide rods 29 are arranged in the area of the largely rectangular openings 23 in the upper plate 8 of the upper table 2.

The design of the press foot 5 is shown in detail by way of example in FIGS. 15, 16, 17 and 18, this foot 5, as can be seen in detail in FIGS. 15, 16, 17, 18, with an upper part 38 in the hydraulic cylinder receptacle 19 , 20 can be arranged and then using conventional means such as to be fixed there by screwing.

The press 1 according to the invention corresponding to the first and second exemplary embodiment according to FIGS. 1 and 2 can be arranged one above the other in layers with seizures 1, 1 a, 1 b of the same type or different exemplary embodiments, only in the case of the lower press in the present exemplary embodiment according to FIG 1, which largely correspond to the exemplary embodiment according to FIG. 1, press feet 5 are to be arranged.

With such a stratification of individual presses 1, 1a and 1b according to the invention, the lower press 1 corresponds to the exemplary embodiment according to FIG. 1 or FIG. 9.

The second press 1a to be arranged above corresponds to the exemplary embodiment according to FIGS. 3 and 10 and the following one in turn corresponds to the exemplary embodiment according to FIGS. 1 and 9, i.e. There can be any stratification of presses 1, 1b, 1b according to the invention, the two previously described exemplary embodiments being placed alternately on one another and, as already explained, the press feet 5 are used only in the lower press 1.

In a further exemplary embodiment, shown in FIG. 19, however, it is also possible to arrange a press 1 corresponding to the exemplary embodiment according to FIG. 1 or 9, in the viewing direction FIG. 19, as the lower press 1, with the upper plate 7 of the upper table 2 and in the subsequent second press 1a in accordance with the exemplary embodiment according to FIG. 3 or FIG. 10, the lower plate 7 of the lower table 3 is dispensed with entirely.

In the subsequent press, i.e. the press 1b is in turn a press 1 according to the first exemplary embodiment according to FIGS. 1 and 9, in which case the lower plate 7 of the lower table 3 can then be dispensed with.

According to the exemplary embodiment in FIG. 19, the upper plate 7, 8 of the lower table 3 of the upper press 1b; 1a thus replaces the upper plate 7; 8 of the upper table 2 of the press 1a; 1 arranged underneath.

It is of course conceivable to provide other press feet 5 for the lower press 1 or the presses 1, 1a, 1b in general, or to dispense with the press feet altogether and instead to provide corresponding recesses in the base 6, for example, in order to ensure the necessary freedom of movement of the yoke 28.

Furthermore, it is also conceivable not to design the tables 7, 8 in two pieces, but rather in one piece, and not to provide the necessary recesses 22 and openings 23 over the entire material thickness of the table 2, 3, but in each case e.g. to be provided with the corresponding hydraulic cylinder holders 19, 20 only over half the height and the other half of the table 2, 3.

With such a design of the tables, the openings 11 for positioning the plates 7, 8 and absorbing shear forces can be dispensed with entirely.

In addition, it is expressly pointed out here that the hydraulic devices 24, corresponding to the exemplary embodiment according to FIG. 19 of different presses 1, 1a, 1b, are not supplied by a common unit, but rather by separate units, i.e. The presses 1,1a, 1b are individual presses 1,1a, 1b which are layered one above the other and which, according to FIG. 19, have only been mechanically coupled to one another, i.e. in order to achieve a defined positioning with respect to one another and to minimize the overall height without this leading to a common control of the individual hydraulic devices 24 or including functioning only in a coupled version.

With the individual feeds 1,1a, 1b according to a possible stratification acc. Fig. 19 can, as explained above, dispense with the facing plates 7,8; 8,7 of the facing tables 2,3,; 3,2 of the immediately stacked presses 1,1a, 1b nothing changes the function of the individual presses 1,1a, 1b, ie that only the upper table 2 is designed as a lifting table.

Claims (28)

Press, in particular for pressing plate-shaped workpieces, with at least one pressure chamber, with at least two tables delimiting the pressure chamber, at least one of the tables being designed as a fixed table and at least one of the tables as a lifting table, and at least one device which pressurizes the pressure chamber characterized in that the press (1) has a device (11) for coupling to at least one further press (1a, 1b) to be arranged above and / or below it. Press according to claim 1, characterized in that the device (11) is designed to position presses (1, 1a, 1b) to be positioned and to absorb shear forces. Press according to Claim 1, characterized in that the device (11) has at least one plug-in means which is designed to be receivable and is arranged in at least one table (2, 3) and penetrates this at least partially. Press according to claim 3, characterized in that the opening (11) is designed to penetrate the table (2, 3) in full. Press according to one of claims 1 to 4, characterized in that the device (11) has five openings (11). Press according to one of claims 1 to 5, characterized in that at least the tables (2, 3) delimiting the pressure chamber (4) have at least one opening (11). Press according to one of claims 1 to 6, characterized in that the openings (11) are designed as bores (11) and that the plug-in means are bolts to be inserted into the bores (11) with a precise fit. Press according to one of claims 1 to 7, characterized in that the tables (2, 3) are designed in several pieces. Press according to claim 8, characterized in that the tables (2, 3) are designed in two pieces. Press according to claim 8 or 9, characterized in that the tables (2, 3) have two table tops (7, 8) to be arranged one above the other. Face according to one of claims 1 to 10, characterized in that the table tops (7, 8) of a table (2; 3) are designed to complement one another differently. Press according to one of claims 1 to 11, characterized characterized in that the mutually facing table tops (7,7; 8,8) of the tables (2,3) delimiting the pressure chamber (4) are configured identically and that the table tops (8,8; 7,7) facing away from each other are the same (4) delimiting tables (2, 3) are also designed identically. Press according to one of claims 1 to 12, characterized in that the individual table tops (7, 8) forming the tables (2, 3) both adjoin the printing space (4) and face away from it, the tables (2, 3) are configured to be arranged. Press according to one of claims 1 to 13, characterized in that the table top (7, 8) is hollow and has reinforcing ribs (14) in its interior. Press according to claim 14, characterized in that the reinforcing ribs (14) are honeycomb-shaped. Press according to Claim 15, characterized in that the honeycomb-shaped reinforcing ribs (14) are at least partially welded to one another at their mutually contacting webs (18). Press according to one of Claims 1 to 16, characterized in that four devices (25, 27, 28, 29) which act on the pressure chambers (4) are provided. Press according to one of claims 1 to 17, characterized in that the device (25, 27, 28, 29) is provided with pull and / or guide rods (29) and that the pull and / or guide rods (29) guide the lifting table (2) and are arranged with it in operative engagement. Press according to one of claims 1 to 18, characterized in that the fixed table (3) has guides (30) guiding the pull and / or guide rods (29). Press according to one of claims 1 to 19, characterized in that the device (25,27,28,29) has a pressure cylinder (25), that the pressure cylinder (25) via a piston rod (27) with the pull and / or Guide rods (29) are in operative engagement, and that the pressure cylinder (25) on / or in the fixed table (3) with the piston rod (27) is fixed pointing away from the lifting table (2). Press according to one of claims 1 to 20, characterized in that the side of the lifting table (2) which faces the printing cylinder (25) has an opening (19, 20) which is arranged coaxially to the printing cylinder and can be received by the printing cylinder (25). Press according to one of claims 1 to 21, characterized in that the opening (19, 20) is a bore (19, 20) penetrating at least the table top (7, 8) of the lifting table (2) adjoining the pressure chamber (4) . Face according to one of claims 1 to 22, characterized in that the region of the second table top (7, 8) forming the table (2) adjoining the bore (19, 20) has a notch (22, 23). Press according to one of claims 1 to 23, characterized in that the bore (19, 20) is provided with a slot (36) which extends over the entire height of the bore. Press according to one of claims 1 to 24, characterized in that the table top (7, 8) has four bores (19, 20) which each serve to hold a printing cylinder (25). Press according to one of claims 1 to 25, characterized in that the bores (19; 20) of the table top (7, 8) are offset from the bores (20; 19) of the further table top (7) forming the table (2, 3) , 8) are arranged. Press according to one of claims 1 to 26, characterized in that the table top (7, 8) has four notches which enable the pulling and / or guiding rods (29) to be fastened and the traversing and / or guiding rods (29) to move along with facial expressions (22,23). Press according to one of claims 1 to 27, characterized in that the notches (22, 23) of the table top (7, 8) are offset from the notches of the further table top (7, 8) forming the table (2, 3) .

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