SU42407A1 - Screw press for removing the core from the captured hollow cylinder - Google Patents

Description

Taking out of the cylindrical hollow core bodies made by squeezing it down in a vertical direction is generally known. The invention proposes for this purpose a screw press, the cylindrical body of which is externally provided with a screw thread and is moved by rotating the nut put on it, and the piston (or rod), which directly acts on the extruded core, is connected to the case by polyspast transmission, why the piston is accelerated against moving the body itself.

To support the cylindrical hollow article from which the core is taken out, in the proposed press, there is a lower core covering ring supporting the end of the product and lying on the ends of the radially movable beams.

In FIG. 1 shows a general view with a partial section of the proposed press; FIG. 2 is a top view of the bottom of it; FIG. 3 is a side view with a partial section of the press mechanism; FIG. 4- part of it.

The press mechanism itself is mounted on the platform 10 (Fig. 1), which in the drawing is represented as a trolley moving along the upper crane runway. On the platform are

(59)

two motors 40 (Fig. 3), which actuate the working cylinder (housing) 5 of the press through a worm gear 41-42. In common with the platform frame motor, a nut 43, rigidly connected with a worm wheel 42, is pivotally fixed. Through the nut, the working cylinder 45 of the press, having a corresponding screw cut from the outside, is passed. In addition to the nut 4B, the cylinder 45 is guided by a sleeve 48 with locking keys 49, which, by entering the longitudinal grooves made in the cylinder, keep it from rotating. The sleeve 48 is secured in a vertically movable crossbar 46, having for its direction rods 47, passed through the frame of the platform W. Inside the screw cylinder 45 a piston (or rod) 44 can be advanced, provided on both sides with ratchet teeth 5. (Fig. 3 and 4) . At the top, the rod 44 has rollers 53 and 57 on the same axis, on the first of which rod 44 is suspended by cables 52, envelopes rollers 5 / mounted in brackets 50 at the top of cylinder 45 fixed with ends in the crossbar, which is thus a counterweight to rod 44. In addition, the rod 44 is under the action of a second block system consisting of cables 56 attached at the ends of the same crossbar 46, going further through guide rollers 64 mounted below platform U and covering flange rollers 55 located on brackets 54at the bottom of the screw cylinder 45, and the previously mentioned roller 57 at the top of the rod. All these rollers and presses, together with the crossbar 46, constitute a single polyspast system connecting the cylinder 45 and the rod 44; the latter, in addition, are also connected by a ratchet device consisting of dogs 59 (Fig. 4) rotatably fixed at the bottom of the cylinder 45, where the rollers 55 are mounted on the same brackets 54, the dogs rest against the teeth 55 of the rod 44, and therefore, with longitudinally moving down the screw cylinder 45, they force the rod 44 to go down and, thanks to the above described polyspast system, the rod movement will be made at a speed twice as high as the cylinder, and the dogs can freely jump up and down the rod 44 through one or two teeth.

A cylindrical hollow article 72 5 (fig. 1), from which the core (5) is to be squeezed out, is placed under the platform (with press mechanism) with its end on the stop ring M-, which lies at the ends of the radially placed beams / 5. Since the rings J4, depending on the size of the product and its core, have to be used with different diameters, the beams 75 (Fig. 1 and 2) are made sliding along the radii for which they are cracked between the lower and upper rollers 76. For reduction The movement of the beam is equipped with toothed racks coupled to gears 5 (Fig. 2) mounted in the fixed common frame of the device. On one axis with the gears, the asterisks b, covered by the endless chain of Gall 7, sit. One of the axes is extended upwards; when it is rotated, for example, by means of a handwheel, all gears will move and, due to their coupling with beams / 5, will force them to move simultaneously longitudinally along the direction to or from the center of the device.

By properly installing the product 72 under the press on the ring 14, they float

the motors 40, which causes the nut 43 to come into rotation, causes the screw cylinder 45 to fall down, and at the same time the rod 44 coupled to him by the pawls 59, and the latter will be advanced due to a polyspast connection (as mentioned above) twice rather, the cylinder 45 itself. The rod 44, pressing the lower end on the upper end of the core 75, will push out the last of the product 72, which has a support beneath itself on the ring M. | The covered core sits in the injected lowering platform 77, is placed with it in the lower carriage 75 and is taken away on the latter to the side. The product 72 remains on the support ring J4 and is removed from it by a crane or other means.

At the end of the operation, the rod 44, by the action of the weight of the crossbar 46, easily rises back up into the cylinder 45 after the dogs 59 (Fig. 4) are retracted by hand-dragging the cables 57 over the roller 62.

The subject matter of the invention.

Claims (4)

1. A screw press for taking out the core from a made hollow cylinder, characterized in that between the outer casing of the screw press and its piston directly acting on the core there is a polyspast transmission doubling the movement speed of the piston. 2. The form of the press according to claim 1, characterized in that the outer surface of the working cylinder 45 of the press is provided with a screw thread and a nut 43 screwed on it, rotated by a worm gear from a motor (Fig. 3). 3. The form of the press on the PP. 1 and 2, characterized in that a system of cables 52, 56 attached at one end to the top of the stem and grabbing rollers 57, 55 attached to the upper and lower ends of the body is used to move to one side or the other of the rod 44 inside the moving cylinder 45. cylinder (Fig. 3). 4. The form of the press on the PP. 1-3, characterized in that for the installation of a hollow cylinder 72, seated