SU1283203A1 - Device for piecewise transportation of sheet material from stack - Google Patents

Abstract

The invention relates to devices for transporting sheet material from the stack one at a time and allows the movement of sheets of flexible material. In addition, the sheet can be moved with a flip upside down. The device has a conveyor 1 with a vacuum chamber 2 placed in it and suckers 8 for gripping the sheet, as well as means for straightening the sheet consisting of a carriage 4 installed under the conveyor and spring-loaded rollers 6 mounted on shields 5. Rollers at the moment tearing off the top sheet from the foot, located on the lifting table 3, is brought under the sheet and pressed against the lower branch of the conveyor. The sheet is then pressed by the roller 7. The suction and roll sensors are connected with the drive of the carriage carrying the suction and the movement of the roller. 1 h. n. f-ly, 5 ill. (L GcheE 00 with to about with

Description

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This invention relates to means of transferring .1 of a material, and in particular to transporting sheet material from the stack.

The purpose of the invention is to provide the possibility of transporting a flexible material.

FIG. 1 is a schematic diagram of the device, side view; in fig. 2 - the same, front view; in fig. 3 - end part of the vacuum chamber; in fig. 4 --- the work of suction cups at the time of capturing the top sheet; in fig. 5 - the position of the rolling rollers, summed under the top sheet.

The device comprises a belt conveyor 1 made of separate belts, a vacuum chamber 2 located between the branches of the conveyor, a lifting table 3 for a foot of material located under the conveyor, and means for straightening the sheet. The means for distributing the sheet consists of a carriage 4 installed under the conveyor, arranged on it with the possibility of moving across the conveyor p arnirno connected by one ends of Ptang 5 and spring-loaded rollers 6, whose axes are parallel to the conveyor belts. The rollers are mounted on the free ends of the rods. The device has a clamping spring-loaded roller 7 installed with the possibility of interleaving along the lower branch of the conveyor.

Roller 7 has a width equal to the width of the conveyor. In the chamber 2, vacuum-suckers 8 are installed with the possibility of vertical movement over the table. The vacuum chamber has a rounded shape and perforation in the zone of the end portion of the conveyor. The suction pads are connected to a vacuum sensor 9, a carriage displacement sensor 10, and are driven by pneumatic cylinders 11 located inside the vacuum chamber. A spring loaded roller 7 is associated with sensors 12 and 13 located at the extreme points of the roller's movement. The rods 5 are connected by a hinge 14. The rollers are driven by a non-cylinder 15 mounted on a carriage 4 connected to a sensor 16, which sends a signal to activate the lift of the pneumatic cylinder rod. The pneumatic cylinder rod 15 is connected to the sensor 17, which sends a signal to the carriage return and the forward movement of the spring-loaded roller. One of the rollers 6 is associated with a sensor 18 for reversing the cylinder 17, which sends a signal to the return stroke of the carriage 4 and the forward stroke of the spring-loaded roller 7.

The vacuum chamber 1 is made rounded on one side and has grooves in which the disks 19 rotate freely, thus allowing the conveyor belts to move (Fig. 3). Chamber 2 is perforated along the surface of the adjoining trans5

the ported material has a protrusion 20, further on which, in the course of its movement, the material is held on the conveyor belts due to its own gravity.

The installation works in the following way.

Under the conveyor 1 on the lifting and lowering table 3, a stack of flexible sheet material is formed. The suckers 8 by the pneumatic cylinder 1 are placed on the upper sheet of the foot (Fig. 4). When the level of discharge required to separate the top sheet from the foot is reached, the edge of the sheet is held by the suction cups 8, the vacuum sensor 9 is triggered, which gives a command to move the suckers dare from the sheet edge to the vacuum chamber 2. When the upper position of the suction cups is reached, the sensor 10 issues a command on the movement of the carriage 4, which moves towards the table 3 and takes up a position under the raised upper sheet (Fig. 5). When this sensor 16 includes

0 air supply to the pneumatic cylinder 15, which raises the rod 5 with rollers 6.

The rollers, abutting against the raised edge of the upper sheet, roll out to the width of the conveyor 1, pressing the edge of the sheet to the vacuum chamber, thus ensuring that the edge of the sheet is securely gripped by the vacuum chamber. In the extreme position of the rollers (shown with a styrene in Fig. 2) of the sensor 18, the return stroke of the pneumatic cylinder 15 is activated. At the end of the return stroke, the sensor 17

Q is given a signal to reverse the movement of the carriage and the movement of the spring-loaded roller 7 along the lower branch of the conveyor. When the roller 7 is moved, the sheet is gripped by the vacuum chamber along its entire spad.

J At the opposite end of the conveyor belt 1, the spring-loaded roller 7, with the i.j sensor, turns on a belt conveyor which, moving clockwise, moves the sheet to its last operation with its lower branch. The spring-loaded roller, returning to its original position, the sensor 12 sends a command to disconnect the belt conveyor, raise the table 3 with the foot and lower the suction cups, after which the cycle repeats. If it is necessary to lay the sheet with the bottom side up, the conveyor makes a movement counterclockwise and moves the sheet, bending around the vacuum chamber, to the upper branch of the conveyor and then to the next operation.

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The proposed device allows the laying of both rigid and flexible materials, as well as a single-piece supply of flexible sheet material with flipping upside down, 55 and can be used on the finishing production in the leather industry. The use of the device allows to mechanize the flow

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tanning semi-finished products to credit machines.

Claims (2)

1. A device for routinely transporting sheet material from a foot, comprising a belt conveyor made of separate belts, a vacuum chamber under the carriage conveyor arranged on it with the ability to move across the conveyor pivotally connected with the ends of the schtang and spring-loaded rollers whose axes are parallel to the conveyor belts, mounted on the free ends of the rods, pressure, spring-loaded roller mounted for movement along the lower branch of the conveyor, having a width, lying between the branches of the trans-width of the conveyor, and installed Lennies under the conveyor are carriages located on it with the possibility of moving across the conveyor of hinged shtang and spring-loaded rollers with one ends, the axes of which are parallel to the conveyor belts mounted on the free ends of the rods, presser, spring-loaded roller mounted for movement along the lower branch of the conveyor width, equal porter, and a lifting table for the foot of the material, located under the conveyor, characterized in that, in order to provide the possibility of transporting the flexible material, it has a means for straightening the sheet, consisting of /////////// Figg In the chamber with the possibility of vertical movement above the table vacuum suckers. 2. A device according to claim 1, characterized in that the vacuum chamber has a rounded shape and perforation in the region of the end portion of the conveyor. nineteen Sri.H