SU1705441A1 - Device for folding textile fabrics - Google Patents

Abstract

The invention relates primarily to municipal engineering and can be used to stack materials in other industries. The goal is to increase speed and reliability. The speed increase is carried out by combining the product feeding and folding it in a single unit due to the inversely rotating drums, one of which relates to the belt transport, and the other with microholes that serve to create a vacuum to capture the middle of the product from the foot. This allows the fabrication of textile fabrics in an already folded form with a minimum gap relative to each other. The increase in reliability is achieved by using an autonomous suction device made in the form of an electric drive with a fan in the micro-apertures drum. 2 Il.

Description

with

WITH

The invention relates to the textile industry, primarily to municipal engineering.

The aim of the invention is to increase the reliability in operation and the quality of folding by bending in the middle part of the web.

FIG. 1 is a functional diagram of a device for folding textile webs; 2 shows the structure of the gripping drum.

The device comprises a transport unit comprising a belt conveyor 1 with a carrier branch 2 and a drum 3, a hollow gripping drum 4 and a guide 5 for placing the folded web (piece of linen) on the conveyor belt. The drive transmission 6 drives the conveyor drum 3 and the hollow drum 4 to rotate.

The stacks of the bel 7 are laid on the wedge 8 and the fingers 9 on the platform 10 located under the hollow drum 4.

The device has a means of step-by-step approaching of the transport unit and platform as the foot is disassembled, comprising a piston 11, setting in motion the platform 10 and located in the pneumatic cylinder 12, pneumatic valves 13 and 14 of admitting and releasing air under pressure. The top of the wedge 8, fixed in the middle part of the platform 10, is located under the axis of the hollow drum 4, which is made in the form of a hollow pipe with microholes, inside which is mounted on pylons 15 an electric motor 16 with a fan 17, and the output openings 18 of the hollow drum are butt end

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pipes fixed in bearing supports 19.

The device works as follows.

The feeding conveyor 1 and the hollow drum 4 are constantly rotated by means of the drive 6, and the drum 3 and the hollow drum 4 are rotated in opposite directions. On the platform 10, a pile of linen lies, and after laying the wings of the protrusion 8, they lower (fingers 9 are retracted to the sides) and pass to another level, bending the pile. The piston 11 is in the lower position and the stack of sheets is not in contact with the rotating hollow drum 4. When air is supplied by means of the valve 13 by pressing into the cavity of the cylinder 12, the piston 11, which is rigidly connected to the platform 10, begins to move towards the hollow drum. When the drum 4 is touched to the middle of a pile of textile cloths, the drum presses the middle of the canvas by diluting it to its surface. At this point, the valve 13 closes and the valve 14, which is associated with the atmosphere, is opened, and the air is vented. The platform 10 under the action of the weight goes down, moving away from the hollow drum 4. The canvas begins to move together with the drum 4, pressing the right side (Fig. 1) to its surface. The left half of the web remains in a free-hanging condition. The act of using a hollow drum 4 into the gap between this drum and the drum 3 of the conveyor 1. The web is pulled in and placed onto the carrier branch 2 of the conveyor 1 along the guide 5 already mechanically. The next piece of laundry goes to the storehouse similarly. To ensure the suction of air from the cavity of the drum 4

A fan 17 is used with an electric motor 16 mounted in a hollow drum 4, which ensures that the rotating parts do not have pneumatic insulation to create a vacuum in the cavity of drum 4. The use of a hollow drum 4 with a pneumatic pump in the feeder allows the feeding and folding operations to be combined (since the next piece of bel possible at intervals of half the length of the product), and the use of autonomous suction eliminates the need for flexible pneumatic isolation.

Claims (1)

Claims An apparatus for folding textile webs, comprising a platform for stacking a stack of webs, a transporting unit located above it, including a hollow pickup drum and a conveyor belt with an upper carrier branch and a web guide installed with a clearance for the folded web; Platform as the disassembly of the foot, characterized in that. in order to increase reliability and folding quality by bending in the middle part of the canvas, the platform has a wedge protrusion made in its middle part and is installed relative to the transporting unit so that the top of the protrusion is located under the axis of the gripping drum, and the last one is perforated and has sucking air from its cavity, wherein the means for bringing the transporting assembly and platform closer together is associated with the latter for its vertical lift. Н4Ч44 H 41 4t 444 41