SU42024A1 - Device for automatic removal of the sheet from the format shaft of the papp machine - Google Patents

Description

The present invention refers to the automatic removal of a sheet of skin substitute, formed on the format shaft of the pap machine. For this purpose, the device is equipped with a U-shaped frame, eccentrically mounted on the axis of the formatting shaft and the carrier knife, which cuts the weight gained on the surface of the formatting shaft upon reaching a certain thickness. The knife is set in motion by electromagnets interlocking the U-shaped frame with the inner edge of the formatting shaft to automatically transfer it to the working position.

The knife consists of two slats, one with a serrated blade and the other with a smooth or serrated, fitted with eccentrics at the ends to move in opposite directions from one another to the other, mounted on one of the side beds of the U-shaped frame.

In FIG. 1 is a side view of the device; FIG. 2 is a cross-section of the device; FIG. 3-5 - knife parts.

The formation of the skin-surrogate sheet occurs when the formatting shaft 7, which collects the skin-surrogate mass from the grid 2, rotates; when the required sheet thickness is reached (5-20 mm}, the latter is removed by the proposed mechanism, with automatic removal

the sheet is based on the eccentricity of the movement of the specified mechanism in relation to the formatting shaft. The mechanism consists of two rings 3 mounted on rings 4, connected by beam 6 and thus forming a 5-b-3 U-shaped frame. Rings 4 are attached to the supports 5 eccentric in relation to the axis of the format shaft /. The frame beam B carries a knife scraper 7 consisting of two strips 7a and 7b. One of the slats is sharpened tangentially to the surface of the formatting shaft so that it does not scratch the shaft when it fits, and has a tooth; the other is sharpened and can also have a serrated blade. These bars have the ability to move from eccentrics 8 back and forth in opposite directions with respect to each other. The eccentrics 8 through the worm gears 9 and the screw W, the shaft / 7 and the conical pinion 12 receive movement from the electric motor / 5 installed on one of the beds 5 of the frame 3-6-3. Several freely rotating rollers are seated on the shaft //. Beds 3 of frame 5-b-3 are provided with dove-tail grooves, by means of which electromagnetic boxes 15 with electromagnets are strengthened, and the connected cores / b shoes have the ability to act magnetosis adheres to the inner rim

format shaft. The rods are screwed into electromagnetic boxes / 5 rods / 7 with springs to disconnect the shoes of the cores from the format shaft. To the free ends of the bed 3 frames 3-6-3 attached counterweights 18,

The squares 19 attached to the rocker arms 20 of the format shaft serve to secure the springs 21 tilting the frame at the end point II of the lift,

At the established winding thickness of the skin of the surrogate mass on the format shaft, the mechanism is not shown in the drawing, the current into the electric motor 13 and the electromagnet (solenoid) 15-17, as a result of which the knife scraper is set in motion and the shoes of the cores adhere to the format shaft. When the mechanism does not work, being in position I, the knife-scraper 7, due to the eccentricity of the rings 4, is located at the greatest distance from the format shaft. When the U-shaped frame 3-6-3 coupled with the format shaft moves with the knife, due to eccentricity, it approaches the leather sheet and cuts into the last moving knife 7. Pass the entire layer of the sheet, the knife stops, releasing from adhesion to the format shaft , by virtue of the action of the folding springs 2 /, which are associated with the current opening mechanism. At the moment of lowering the frame, the knife scraper 7 removes the leather surrogate sheet from the format shaft and then throws it onto the conveyor 22. At the same time, when the frame reaches the roller 23 the transport tera, it stops due to the sheet between the rollers J4 pressing it and the conveyor. After the sheet exits, a gap is formed between the rollers and the conveyor roller,

making it possible for the whole mechanism to take up its original position. To clamp the sheet to the conveyor at any thickness, its conveyor roller may be pressed using the adjuster.

These operations are repeated automatically at intervals of time, depending on the speed of the layer and the thickness of the sheet.

The subject matter of the invention.

1. Device for automatic removal of a sheet from a format shaft of a pap machine for skin substitutes, characterized by the use of a U-shaped frame 3-6-3, freely mounted on two eccentric, relative to the axis of the format shaft 7, fixed rings 4 and equipped with a knife 7 along the generator of the format shaft / and solenoids (electromagnets) / 5- / 7 at its ends, designed to engage the frame 3-6-3, with the help of cores 76, with the inner edge of the format shaft / and transfer it to the working position II when reaching sufficient sheet thickness and automatic m switching on the current in the solenoid / 5- / 7. .

2. The form of execution of the device indicated in paragraph 1, characterized in that the knife 7 is made of two slats — one 7th with a toothed blade and the other 7lf with a smooth or also a toothed blade — provided at the ends with eccentric mechanisms 8 for moving the slats 7a and 7 & relative to each other using a worm gear 9-70, shaft // and an electric motor / 3, mounted on one of the side beds 3 of the frame 3-6-3.

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