Presses – Plural presses – Stacked boxes or plates
Patent
1993-04-12
1994-07-12
Gerrity, Stephen F.
Presses
Plural presses
Stacked boxes or plates
100208, 425338, B30B 702
Patent
active
053278240
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a multistory press for pressing boards of wooden material or veneers or the like and, in particular, to a multistory press having integral support plates and integral pressure transmitting sections.
A multistory press includes a press frame wherein a plurality of press boards, which are, for instance, combined in two units, are movably supported. The press boards are moved with the aid of a pressure means, thereby opening or closing pressure chambers which are formed therein between and in which the material to be processed is pressed. The multistory press of the generic type also includes three tables that are arranged within the press frame. The uppermost table and the lowermost table are here guided in a movable way, with the pressure means moving said tables upwards and downwards. The center table is stationarily arranged within the press frame.
Although the multistory press of the generic type operates in a satisfactory way, in particular at very high pressures, the structure thereof has a relatively heavy weight and is troublesome to mount because of the provision of the three tables.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a multistory press whose structure is simplified and thus less expensive and which can be mounted in an easy way.
This task is solved by a multistory press for pressing boards having a press frame that includes a plurality of spaced apart pairs of supports. The pairs of supports are arranged such that one support of each pair is opposite the other support of each pair along the two sides of the press frame. A plurality of superimposed press boards are arranged between the supports of each pair of the spaced apart pairs of supports. The plurality of press boards are moveable for forming pressure chambers between adjacent press boards. A pressure cylinder associated with each support includes a cylinder casing fastened to its associated support and a moveable cylinder piston. A pressure transmitting section associated with each pair of the spaced apart pairs of supports includes a first end secured to two moveable cylinder pistons associated with the respective spaced apart pair of supports and a second end operably mounted to the plurality of superimposed press boards for moving the press boards between open and closed positions for forming the pressure chamber. In the preferred embodiment, each pair of the spaced apart pairs of supports are formed by two integral H-shaped support plates that extend from one side to the other side of the press frame and each respective pressure transmitting section is formed by two U-shaped pressure transmitting plates that are spaced apart by spacers and are guided between the two integral H-shaped support plates.
As a result of the provision of integrally formed support pairs and section members, the tables of the generic multistory press can first of all be dispensed with. This helps in an advantageous way to reduce heavy-weight components, which yields a very inexpensive construction of the multistory press of the invention.
Moreover, the multistory press of the invention can be mounted in an easy way. Furthermore, a plurality of press frames can be combined with each other in an advantageous way, so that it is also possible to superimpose a plurality of press story units in response to the respective application.
On the whole, the multistory press of the invention has a structure which can be made easily and is thus inexpensive and which can moreover be used and operated in many ways.
An especially preferred embodiment for the support plates is an H-shaped configuration in which the center beam of the H-shaped support plates forms the part that is formed by the middle stationary table in the multistory press of the generic type.
In an especially preferred embodiment each support consists of two H-shaped support plates which are spaced apart from each other via spacers. The pressure transmitting sections are guided between these spaced-apart support p
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patent: 4873923 (1989-10-01), Manning
Siempelkamp, Pressen fur der Holzindustrie S. 1-7.
Gerrity Stephen F.
WM Wild Maschinen GmbH
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