SU895537A1 - Apparatus for applying adhesive - Google Patents

Description

one

The invention relates to devices for applying glue to the flat horizontal surfaces of the workpiece and can be used in the woodworking industry, for example, in the manufacture of furniture and plywood.

A device for applying adhesives is known, comprising a reservoir, gluing rollers mounted on a bed with corresponding metering rollers, a glue holding pipe and a glue box 1.

The device requires increased manufacturing accuracy, is difficult to operate, and does not have the potential to significantly improve the technical and economic performance of gluing.

The closest in technical essence and the achieved result to the invention is a device for applying glue, including an application head with nozzles and glue supply pipes, driving leveling rollers, a conveyor and a glue box 2.

When the device is in operation, the glue is fed into the application head and squeezed through the nozzles or with the help of compressed air that is injected into the head through a pipeline.

l

or by pumping glue through the pipeline at the required pressure. When the workpiece is moved by a conveyor, parallel bands of glue are applied to its surface. The blank enters the screed rollers, which evenly distribute glue over its surface. The application head is located across and above the conveyors. Behind the conveyor heads, drive-leveling rollers with feed conveyor are mounted.

, jj The axes of the conveyors and the feeding conveyor make an angle.

The drawbacks of the device are that it occupies a large production area and has non-technological

15 stream. Workpieces that have passed under the application head are conveyed to the drive leveling rollers in the transverse direction. These two intersecting streams of conveyors and conveyors complicate the technology of gluing and increase the barity of the device, making it non-compact.

The aim of the invention is to reduce the size of the device.

This goal is achieved due to the fact that, in the glue dispenser, which includes a spreading head with nozzles and a glue line, the drive leveling roller, the conveyor and the glue box, the spreading head is made in the form of a rotatable drive drum, inside which Axis mounted stationary copier, interacting with valves that are equipped with a nozzle.

In this case, the drum is mounted so that its diametrical plane forms an acute angle with the longitudinal axis of the rollers,

FIG. 1 shows a device for applying glue, general view; in fig. 2 - the same, top view; in fig. 3 - the same, side view.

The device consists of drive leveling rollers 1 mounted in the support supports on the frame and drive conveyor 2 for moving the workpiece 3. In front of the rollers 1, leveling the transverse flagella 4 glue applied to the workpiece, under the conveyor 2 there is a glue box 5 in the form of a bath. Above the glue collector there is a spray head, made in the form of a drum 6, closed by a lid 7. On the cylindrical wall of the drum there are radial nozzles 8 in the form of tubes with an inner diameter of 3 -

10mm. The drum is mounted in the sub-bearing supports and is connected by a chain transmission to the drive 9.

Through the lid 7, a fixed axis 10 is inserted into the cavity of the drum, in which pipelines for supplying glue are made.

11 and compressed air 12.

On the axis 10 inside the drum mounted stationary copier 13, which interacts with spring-loaded valves 14 nozzles 8.

The rotating drive drum 6 is mounted above the conveyor so that its diametral plane forms an acute angle θLL with the longitudinal axis of the rollers, which is related approximately by the relation:

J, - "xrcsin

V,

env

where V is the speed of the conveyor;

ZHrkruzhna drum speed.

The glue applicator works as follows.

The driven rotary drum is closed with a lid 7 and glue and compressed air is supplied through pipelines 11 and 12 of axis 10 to it, which creates increased pressure in the drum (only glue can create an increased pressure by applying pressure).

The glue, which is under pressure, begins to flow out of the nozzle 8, opened with a copier, in trickles 13, which are in the lower position. When turning on the actuator 9, the nozzle drum and outgoing jets of glue begin to move across the conveyor, stack into the glue box 5. When the conveyor 2 supplies the workpiece 3 glue jets fall on the workpiece, leaving it in the form of transverse flagella 4. Next, the billet enters the rollers 1,

which crush, spread flagella glue with a thin film over the entire surface of the workpiece.

Copier 13 while rotating the drum opens the lower valves 14 of the nozzles. The valves slide on the copier and, off it,

The upper, non-working nozzles 8 are closed, preventing the residue of glue from leaving them. The glue applicator uses one straight conveyor linking the applying rOvioBKy and rollers. Wherein

SchA head and rolls. delivered in series, which made it possible to achieve compactness of the device, reduce its dimensions and, with the flow, improve the adaptability of the application of glue.

Claims (2)

1. A glue application device, including a spray head with nozzles and a glue pipe, a drive leveling roller, a conveyor and a glue box, characterized in that, in order to reduce the size of the device, the spread head is designed as a rotatable drive a drum inside which a fixed cam is mounted on its axis interacting with the valves with which the nozzles are fitted. 2. A device according to claim 1, characterized in that the drum is mounted so that its diametral plane forms an acute angle with the longitudinal axis of the rollers. Sources of information taken into account in the examination 1. Glebov I. T. Kleenanoschie machine tools woodworking enterprises. Slabs and plywood (overview information). Issue 5., M., VNIPIEIlesprom, 1979, p. 5-7, fig. 2. v, d, e, g. 2. Glebov I. T. Kleenanoschie machines woodworking enterprises. Plates and plywood (review information). Issue 5, M., VNIPIEIlesprom, 1979, p. 5, fig. 2z (prototype). .r J