DE616081C - Hydraulic press for the production of pressed parts from synthetic resin and similar plastic masses - Google Patents

Description

Hydraulic press for the production of molded parts from synthetic resin and Similar plastic masses Hydraulic presses for production are already known of bumpers made of synthetic resin and similar plastic masses, where the movable one Press top is given by rods attached to it in two, widely spaced apart fixed parts of the press is performed.

These presses are similar in structure to hydraulic forging presses. They are relatively large, heavy and, as a result, expensive, although they only have one need to perform a small stroke.

These disadvantages are alleviated according to the invention by a new design eliminated, which is kept small and short, requires little material and also is superior to the previous statements in terms of accuracy.

With her, the upper part of the press moves up and down and thus a cross piece below the fixed press table with the upper part is rigidly connected by the guide rods and is used to attach the ejector, by j.e two pressurized water pistons, the cylinder of which is on the side outside the rods are arranged at the bottom and top of the fixed press table.

The drawing shows an embodiment of a press according to FIG Invention in Fig. I in side view and in Fig. 2 in a section along line i-i shown in fig.

The frame of the press consists of a foot A: which has the shape of a rail with the cross-section of an inverted U and two uprights B are attached to the two end faces, which are suitably made of U-iron. Between the upper ends of the stand B, the press table C is attached, which consists of two upright flat iron.

The movable upper part D is held together with the likewise movable lower part E by rods F, which also serve to guide them. For this purpose, they slide in friction bushings Cr, which are provided in the fixed press support C standing between the upper part D1 and the lower part E and in the base A. The outer part D and the lower part E, like the press table C, are made of two flat iron standing on edge.

The pressure for moving down the upper part Di and the lower part E is generated by two cylinders H, the side of the press table C between it Flat iron outside the rods F are arranged. The pistons of these cylinders are attached directly to the lower part E.

The pressure to move the upper part D and the lower part upwards E is generated by two cylinders I (, which are also on the side of the press table C are in turn arranged outside of the rods F on the upper side. The pistons L of these cylinders are attached directly to the upper part D1.

The flat iron forming the lower part E can also be equipped with ejectors be connected.

Claims (1)

Claim: Hydraulic press for the production of pressed pieces from synthetic resin and similar plastic masses, in which the movable upper part of the press is guided by rods attached to it in two fixed parts of the press that are far apart, characterized in that the upward and downward movement of the upper part of the press (La) and thus a cross piece (E below the fixed press table (C), which is rigidly connected to the upper part (D,) by the guide rods (F) and is used to attach the ejector, each through two pressurized water pistons (J, L) takes place, the cylinder (H, I () are arranged laterally outside the rods (F) at the bottom and top of the fixed press table (C).