SK149094A3 - Press with minimum two under located one over the second pressing spaces - Google Patents

Description

The invention relates to a press for pressing the plate-shaped parts as described in claim 1.

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From EP 0 384 958 B1 such a press, known as a multi-stage press, is known which has a plurality of pressing plates vertically displaceable over a certain variable distance stacked on a stand. A closer definition of which of these press plates are fixed and movable is not in said strand. In a practical embodiment of the known multi-stage press, the fixed press table is located between the lower movable lift table and the upper movable lift table, whereby both press spaces in the open position are always accessible from the same height. Expansion of such a press would only make sense if another fixed press table is placed above the upper lifting table. In this case, the known press for hanging the upper fixed press table needs an expensive supporting structure.

DE-P 43 27 030.1, previously filed, also discloses a plate-type press in the basic embodiment of which a movable lifting table is disposed between a lower fixed and an upper fixed press table. In the next stage of construction, another lifting table may be placed below the lower fixed press table or above the upper fixed press table, whereby the two existing pressing spaces of this press may be extended by one or two additional pressing spaces. Also in this press, the individual open pressing spaces for filling are always at the same height, which simplifies the construction of the filling and emptying device, i.e. the peripheral device of the press. The upward expansion of the press also entails considerable construction costs, since the upper fixed press tables must be f. suspended on a supporting structure.

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SUMMARY OF THE INVENTION It is an object of the present invention to provide a press of the kind described at the outset, whose construction and the upward spreadability are simplified by the self-supporting design of at least one movable lift table.

This object is solved in the press according to the invention by the features of claim 1.

It is essential for the press according to the invention that the upper insertion table delimiting the upper press space rests directly on the lower, also movable, lift table, thus eliminating the need for a supporting structure, which balances the fact that the position of the upper press space is in the open position.

- may vary depending on whether the lower press space is open or not. By placing one or more other lifting tables above the upper lifting table, the press according to the invention can be expanded further without a supporting structure and the weight of the superstructure above the respective pressing space increases the pressing pressure in this space.

Advantageous extended features of the invention are apparent from the other subclaims.

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BRIEF DESCRIPTION OF THE DRAWINGS The invention is explained in more detail with reference to the accompanying drawings, in which: FIG. 1 is a schematic view of a press with three superimposed pressing spaces and FIG. 2 shows a schematic view of a press corresponding to FIG. 1 but with separate superstructure units.

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The press in Fig. 1 has pressing spaces 1, 2 and 3, wherein the lower pressing space 1 is located between the lower fixed pressing table 4 and the lower lifting table 5. The pressing space 2 is located between the lower lifting table 5 and another lifting table. 6, while the pressing space 3 is delimited by another lifting table 6 and an upper lifting table 7, where the upper lifting table 7 is supported on the central lifting table 6.

The press has only a guide frame 8 with an upper cross member 9, which is not a supporting structure for the upper tables, but only a guide device of the lifting tables 5 to 7. The guide frame 8 consists of vertical columns 10 which form a circular guide on which The lifting tables 5, 6 and 7 are displaceable in the vertical direction of the lateral guide bodies 13 without the lifting tables 5, 6 and 7 being supported in the vertical direction on the columns 10.

The columns 10 are located on a fixed base body 14, which, including the fixed lower table 4, is mounted in the guide frame 8 and thereby anchored on the respective base.

The balancing of the weight as well as the transfer of forces from the pressing pressure is carried out both between the lower lifting table 5 and the fixed pressing table 4, as well as between the adjacent lifting tables 6 and 5 and between adjacent lifting tables 7 and 6 by drive rollers 12 which are double-acting . When designing the drive rollers 12 for the working spaces 1, 2 or 3, the weight of the superstructures which influence the pressure in the individual pressing spaces can also be considered. The drive rollers are articulated on the outer longitudinal side of the press table 4 and the lift tables 5, 6 and 7, wherein the cylinder body may be turned downward and the piston rod body upward to reduce leakage loss.

As can be seen from FIG. 2, the lifting tables 5, 6 and 7 as well as the respective drive rollers 12 of the press each form an extension unit which can be placed several times one above the other. For this reason, the pillars 10 of the guide frame 8 are divided into sections 11 which can be put on top of each other and their length corresponds to the overall height, with the house and the sum of the lifts of the lifting tables 5, 6 or 7. make pressing spaces

1 to 3 have been opened alternately so that the length of the columns 10 or the resulting length of the column section (s) 1.1 can be less than the sum of the strokes of all the lifting tables S to 7, including the minimum clearance of the pressing spaces 1 to 3.

Already lower lifting table .5. With the press table located below, it can form a unit having far-reaching equal parts as other extension units of the lifting tables 6 and 7. The guide bodies 13 (FIG. 1) are each divided into a lower part 13a and an upper part 13b, as can be seen from FIG. 2 and one column section 11a of each unit is each assigned one such lower part 13a and one upper part 13b, so that when the press is assembled, these parts can be connected to one guide body 13. For this reason, they are on the upper part 13b or on the lower part 13a. Matching connecting rods 17. ·

In order not to interfere with the mounting joints of the drive cylinders 12 arranged above each other, the lifting tables 5, 6 or 7, as shown in FIG. 2, have longitudinal gripping devices 18, which are arranged two side by side, in as a result, the drive rollers of adjacent pressing spaces are offset relative to one another on the plan view.

The individual pressing spaces 1, 2 or 3 can be divided into several levels, for which the pressing plates 1.5 serve, in the open position of the pressing space, by the spacing devices 1.6 at the necessary spacing.

Claims (6)

1. Press for the pressing of plate-shaped parts, in particular of wood or wood-based materials, such as slats, door panels, floorboards, with at least two pressing spaces located one above the other, located between a fixed pressing table and movable lifting tables, In each case there are drive cylinders surrounding the respective pressing space, characterized in that the fixed pressing table (4) is located at the lowest one, between this and one lower lifting table (5) there is a lower pressing space (1), above the lower lifting a table (5) is provided with another lifting table (6) supported by the drive rollers (12), between it and the lower lifting table (5) there is an upper pressing space (2) and between the two lifting tables (5,6) the drive rollers (12) are located. Press according to claim 1, characterized in that one or more additional lifting tables (7) are located above the next lifting table (6), the upper lifting table (6,7) being always supported by means of drive rollers (12) on adjacent lower lifting table (5,6). Press according to claim 1 or 2, characterized in that the lifting tables (5-7) are guided together on fixed columns (10) of the guide frame (8) by means of circular guides. Press according to claim 3, characterized in that the columns (10) consist of sections (11) which can be mounted on one another and which belong to one of the lifting tables (5-7) and form together with the respective drive rollers (5). 12) an extension unit for the respective press space (1,2,3). Press according to claim 4, characterized in that the lifting tables (5-7) have guide bodies (13) mounted on columns (10) which are divided into a lower part (13a) and an upper part (13b), One lower section (13a) and one upper section (13b) of the guide body (13), which can be joined together during the superstructure, are each associated with one column section (11) of each superstructure unit. Press according to one of Claims 3 to 5, characterized in that the pressing spaces (1-3) can be opened alternately and so that the length of the columns (10) is less than the sum of the stroke lengths of all the lifting tables (5-7) , including the minimum clearance of pressing spaces (1-3).