DE8518791U1 - Hydraulic press, especially for the production of molded parts made of fiber-reinforced plastic - Google Patents

Description

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Andreiewski, Honke & Partner, patent attorneys in Essen

The invention relates generically to a hydraulic press, esp. for the production of molded parts made of fiber-reinforced plastic, - with set up as a press table lower press beam, upper Press beam as well as on the (lower press beam and upper press beam connecting) milling cutter ledge, movable press crossbeam, which has a closing stroke drive and a press stroke drive, the closing stroke drive having at least one closing stroke cylinder piston arrangement is equipped, which works between the upper press beam and movable press traverse, and wherein the Preßhubantrieb one Plurality of press stroke cylinder piston assemblies, connecting rods and coupling devices for the positive coupling of the connecting rods having on the press stroke cylinder piston assemblies. It goes without saying that the press traverse and the press table the Wear necessary tools, which are generally closed by a so-called dip edge, so that the inserted amount of pressed material the pressed part thickness is determined.

In the hydraulic press of the generic type known from practice (see Kunststoff-Journal 11/83, p. 18) form the coupling devices special units, which are equipped with a movable and a fixed clamping jaw and arranged in the movable press crossbeam are. The press stroke cylinder piston assemblies are located in lower press holra or press table. To operate the movable Clamping jaws, a plurality of clutch cylinder piston assemblies is provided, which are distributed over the overall height of the movable press crossbeam are. This is expensive in terms of the number of components and also bulky. In addition, there are functional disadvantages since the forces that are to be absorbed by the coupling devices do not cause self-locking, so that slippage can occur.

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The invention is based on the object of a generic hydraulic Press so on to train that special, from the press cylinder piston assemblies separate coupling devices are no longer required and that one with a small number of components compact design is possible.

To solve this problem, the invention teaches that the coupling devices are built into the press cylinder piston assemblies. This can be done in a number of ways. The arrangement can also be different Variants too. So can the coupling devices with press stroke cylinder piston arrangements be integrated, which in turn are arranged in the press table. A preferred embodiment of the invention, which is characterized by simplicity and compact design, is characterized in that the coupling devices in the upper Press beam are built in and have wedge gears distributed over the circumference of the individual connecting rods, which are attached to the outside of one Hollow pistons are supported, and that the hollow pistons, together with surrounding cylinders fastened in the upper press beam, form the press stroke cylinder piston assemblies form. It is easily possible to make the wedge gear self-locking. It is particularly easy in this context an embodiment that is characterized is that the wedge gears each have one on the associated connecting rod have adjacent fixed wedge and an adjusting wedge adjacent to the hollow piston, which on the top and bottom over in Clutch ring cylinders working clutch ring pistons can be actuated. A further improvement in functional terms can be achieved here, in that the wedges of the wedge gears can also be pressed against one another by the working deformation of the hollow piston, v / as can be set up by a corresponding elastically deformable design of the hollow piston.

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Andrejewski, Honke & Partner, patent attorneys in Essen

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The advantages achieved can be seen in the fact that in the case of the invention Press coupling devices separate from the press stroke cylinder piston assemblies are no longer required. As a result, can a very compact design can be carried out with a relatively small number of units. The embodiments with öölbätheinnienden wedge gears or with hollow pistons, which in turn the Acting on wedge gears are also distinguished from the known embodiment from a functional point of view.

In the following the invention is based on only one embodiment Illustrative drawing explained in more detail. It show in a schematic representation

Fig. 1 is a perspective view of a hydraulic press according to the invention, partially on average,

FIG. 2 shows a detail on an enlarged scale compared to FIG. 1 from the object of Fig. 1, obliquely from above.

The hydraulic press shown in the figures, especially for which - determines the production of pressed parts made of fiber-reinforced plastic.

^ - The basic structure includes a press table 1 set up lower press beam ,, an upper press beam 2 and a movable one Press traverse 3, which is guided on press stands 4, which connect the press table 1 and the upper press beam 2. The press traverse has a closing stroke drive and a press stroke drive. The closing stroke drive is equipped with at least one closing stroke cylinder piston arrangement 5, which is positioned between the upper press beam 2 and the movable press crossbeam 3 works. It is located in the center of the press and is largely covered in FIG. 1. The press stroke drive has a Plurality of Preßhubzylinderkolbenanungssysteme 6 via connection

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Andrejewski, Honke & Partner, patent attorneys in Essen

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rods 7 and coupling devices 8 work on the movable press crossbeam 3. The coupling devices 8 are built into the Preßhubzylindeirkolbenanordnung 6, as the sectional views in Figures 1 and 2 can be seen. In detail is the arrangement

SO concerned that the Kunnltincrereinrichtimoen 8 in the inner PvcEecn »

holrf »Z are built and distributed over the circumference of the individual connecting rods 7 wedge gear 9 have, of which in the figures S two are recognizable. The wedge gear 9 are on the outside of one

Hollow piston 10 supported. The hollow pistons 10 together with the surrounding cylinders 11 fastened in the upper press beam 2 form the press stroke cylinder piston arrangements 6. The wedge gears 9 are designed to be self-locking. It can be seen that the wedge gears S each have a fixed wedge 9a resting on the associated connecting rod 7 and an adjusting wedge 9b resting on the hollow piston 10. The adjusting wedges Sb can be actuated on the upper side and on the lower side, however, clutch ring pistons 13 operating in clutch ring cylinders 12. The Hohlkolbea 10 are designed so that they deform under the pressure of the. Hydraulic pressure medium during the working stroke, namely ^; so · that the wedges 9a, 9b of the wedge gear 9 are pressed against one another by these working deformations of the hollow piston 10.

Claims (1)

Andrejewski, Honke & Partner patent attorneys Physicist Dr. Walter Andrejewski Graduate engineer Dr.-Ing. Manfred Honke Physicist Dr. Karl Gerhard Masch C) advocates: ¹ 63 976 / kb- Utility model registration G 85 18 791.7 j G. Siempelkamp GmbH 5 Co.
Siempelkampstrasse 75
4150 Krefeld 1 4300 Essen 1, Theaterplahz 3, Poitf. 100254 4th July 1985 Hydraulic press, especially for the production of molded parts made of fiber-reinforced plastic Protection claims: 1. Hydraulic press, especially for the production of pressed parts made of fiber-reinforced plastic, - with lower press beam set up as a press table, upper press beam as well as the connecting press uprights movable press crossbeam, which has a closing stroke drive and a press stroke drive, wherein the closing stroke drive with at least one closing stroke cylinder piston ,. ■ ι I I t I < · «Till I Il * · * Andrejewski, Honke & Partner, patent attorneys in Essen Order is equipped between the upper press beam and movable Pressing traverse works, and wherein the Preßhubantrieb a plurality of press stroke cylinder piston arrangements, connecting rods and coupling devices for the non-positive coupling of the connecting rods to the PreShub cylinder piston arrangements, characterized in that the coupling devices (8) built into the press stroke cylinder piston assemblies (6) are. 2. Press according to claim 1, characterized in that the coupling devices (8) are installed in the upper press beam (2) and have wedge gears (9) distributed over the circumference of the individual connecting rods (7), which are supported on the outside on a hollow piston (10) are, and that the hollow pistons (10) together with surrounding cylinders attached to the upper press beam (2) form the press stroke cylinder piston arrangements (6) form. 3. Press according to claim 2, characterized in that the wedge gear (9) are designed to be self-locking. f 4. Press according to one of claims 2 or 3, characterized in that that the wedge gears (9) each have a fixed wedge (9a) resting on the associated connecting rod (7) and an adjusting wedge (9b) resting on the hollow piston (10), which work on the upper and lower sides via coupling ring cylinders (12) Clutch ring piston (13) can be operated sine ¹ . 5. Press according to one of claims 2 to 4, characterized in that that the wedges (9a, 9b} of the wedge gear (9) can also be pressed against one another by the working deformation of the hollow piston (10). ί ί: