SU1159651A1 - Arrangement for applying adhesive - Google Patents

Abstract

A DEVICE FOR APPLYING ADHESIVES containing a reservoir with a spring-loaded piston rod, liquid and air valves placed inside it, and a removable nozzle, characterized in that, in order to improve performance and improve the performance of the device, the attachment is made in the form of a hollow elastic case with a pointed edge and provided with a diaphragm with openings installed in it and a porous elastic insert with a central channel placed on it, and the liquid valve is provided with a tip, rohod extending through the central insertion channel to a level edge of the nozzle body, and is mounted to overlap the aperture holes, wherein porschne in that (A nest under the liquid valve.

Description

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O5 SP 1 The invention relates to ship repair and is intended for applying polymer viscous adhesives, bonding to the surface of products and structures, as well as for impregnating textile materials during the molding of reinforced coatings, and can also be used to mold coatings in other coatings. x industry. When forming glass fiber reinforced protective coatings, as well as when applying adhesives-bonding on the surface of ship structures, especially when repairing small areas, small brushes and rollers are usually used. The use of a brush or roller when applied to ceiling and vertical surfaces is inconvenient due to the application of the composition, as well as time consuming. With this volume, the cost of these tools is up to 10% of the cost of basic materials in accordance with current factory standards, since after one use they often become unsuitable for further work and require replacement due to curing of their residual glue. . A device for manually applying liquid compositions to the surface is known, comprising a reservoir with a dispenser placed in it, made in the form of a cylinder with suction and discharge openings, as well as with a piston and a spool moving in it, forming an overflow and dispensing cavity C. This device is notable for simplicity and accuracy of dosing, however, it is unsuitable for applying glue to the ceiling and vertical surfaces, since in these positions, as glue is consumed, the suction opening is exposed, air is leaking and glue is stopped. When applying quick-setting adhesives, the device is inefficient due to frequent reruns in the work for cleaning and washing the bypass and dosing cavities with holes, which requires a complete disassembly of the device. The closest to the invention to the technical essence and achieving 51 results is a device for applying adhesives, containing a reservoir with a piston rod, a spring-loaded piston rod, a liquid and an air valve, and a removable nozzle, placed inside it. The known device allows manual adjustment of the frequency and duration of the supply. liquid, apply the liquid on any flat surface with a wide stripe. The device can be made easy and convenient to use. A disadvantage of the known device is the presence in the nozzle of stagnant zones and narrow, long channels dL of passage of glue from the tank to the nozzle. Therefore, when applying the latter, remaining in the stagnant zones and channels, it hardens in them, which requires disassembling the device, washing the channels and is characterized by inconvenience of work as a whole. When coating with the help of this device on the ceiling surfaces, the glue flows down, as when using a brush. The internal drawbacks of the device are also non-, the possibility of effective impregnation and poor wetting of uneven surfaces. The purpose of the invention is to increase the efficiency and improve the performance of the device. This goal is achieved by the fact that in a device for applying adhesives, containing a tank with a spring-loaded piston rod with a piston, liquid and air valves, and a removable nozzle, the latter is completed in the form of a hollow elastic body with a pointed edge and provided with a diaphragm installed in it openings and a porous elastic insert placed on it with a central channel, and a liquid valve provided with a tip passing through the central channel of the insert to the level of the nozzle body edge and mouth Installed with the possibility of blocking the aperture of the diaphragm, while in the piston there is a slot under the fluid valve. The performance of the nozzle in the form of a hollow elastic body with a pointed edge and porous elastic

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insert inside allows to increase the efficiency of the device due to the simplicity and convenience of its design, which also allows to simplify the application of adhesive compositions. This is achieved by the contact method of application, in which the adhesion of the adhesive to the porous insert and penetrating it through economically, without spilling, cover (wet and simultaneously saturate) the surface of the products. At the same time, run-off of the applied composition is prevented from flowing because it is prevented from being elastic, closed around the perimeter edge of the nozzle body and porous insert. .

By eliminating the flow of glue, it is possible to effectively apply it to ceiling and vertical surfaces. In addition, the high quality of the coating is ensured due to the reliable wetting of all surface irregularities with the porous insert, which is especially important when forming reinforced coatings, since at the same time compaction of the reinforcing material is achieved.

Installing the diaphragm in the housing of the device on the nozzle side so that it slits, on the one hand, a support for the porous insert, and on the other hand, comes in contact with the liquid valve, equipped with a tip passing through the central channel in the porous insert and having a height reaching the edge of the nozzle also allows, due to the possibility of contact of the tip with the surface to be treated, to ensure a quick metered and uniform feed of the composition to the porous insert, which contributes to good wetting and impregnation of the treated surfaces, and in general, effective operation of the device.

At the same time, the speed of removal of the nozzle and the possibility of quick replacement of the porous insert of its flush allows us to eliminate the need to disassemble the device as a whole.

The presence of a diaphragm having a flat shape, and its location increases the efficiency of the device 59651: 4

By eliminating the formation of stagnant zones in the fluid cavity of the tank in the region of its connection with the nozzle, finding the shortest path of the applied contositum from the tank to the nozzle through large apertures in the Diaphragm, easy removal of the film (if it is formed) with the solid composition.

The execution of the piston with a recess corresponding to the liquid valve also makes it possible to eliminate the formation of stagnant zones in the device.

5 due to the complete displacement of the applied composition from the reservoir (the piston in its extreme position fits tightly against the diaphragm and the surface of the liquid valve).

0 Figure 1 shows the device section; figure 2 - section aa in figure 1, fig. 3 - standalone version of the device.

The device contains a tank 1,

5 made in the form of a cylinder in which the piston rod 2 is placed and the piston 3 freely mounted on the rod 2. The piston 3 divides the reservuar 1 into the air 4 and the liquid 5 cavities

Q variable volume. The tank 1 on the side of the liquid cavity 5 has a sealing shoulder 6 on which, after filling the cavity 5 with glue and installing the diaphragm 7, the nozzle body 8, made of

5 elastic material (for example, molded polyurethane rubber) and reinforced with a rigid ring 9 ,.

In the case of the nozzle 8 is installed

40 removable insert 10 in the form of a washer with a diameter of about 80 mm, 30 mm high, made of polyurethane; foamed foam (foam rubber) having open pores of 0.3-0.8 mm.

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The insert 10 has a central channel 11 into which the fitting of the nozzle body 8 is mounted on the sealing shoulder 6 of the tank 1 ENTER (with a strain) the tip 12 of the latch valve 13. The insert 10 is fastened into. the casing of the nozzle 8 by means of a string 14 (preferably polymeric, for example, polyamide), is passed through

crosswise through the holes (not shown) at the bend of the pointed edge 15 of the wall of the nozzle body 8. The aperture 7 has holes 16 for

glue out of the cavity 5 of the tank 1.

The piston 3 has a recess 17 on the side of the liquid cavity 5, corresponding to the dimensions of the liquid valve 13, and a protrusion 18 on the side of the air cavity 4 entering the hole 19 in the bottom of the tank 1. The hole 19 is made with the possibility of blocking it with the air valve 20 fixed on the rod 2. The rod 2 is equipped with a spring 21 installed between the air valve 20 and the bottom of the swivel glass 22.

The fastening of the air valve 20 on the rod 2 with the ability to rely on the spring 21 is necessary for simultaneously the air 20 and liquid 13 valves when pressed by the tip 12 on the surface to be treated.

At the end of the stem 2, which freely passes through the hole in the bottom of the swivel cup 22, the nut 23 is screwed. The swivel cup 22 is placed inside the handle 24 with the possibility of circular and axial movement due to the longitudinal 25 and cross-section 26 slots on the outer surface (Fig. 2) . The swivel cup is made with a bell 27.

For fixing the swivel cup 22 in the working position, the handle 24 has diametrically opposed spring-loaded pins 28. A threaded hole 29 under the fitting in the handle 24 serves to supply compressed air to the air cavity 4 of the tank 1. The handle 24 is fixed to the bottom of the tank 1 with screws 30.

To hold the piston 3 at the end point when the rod 2 returns to its original position, a spring 31 is fixed on the bottom of the tank 1 and on the edge of the piston 3 there is a V-shaped groove 32 on the side of the air cavity 4.

In the standalone version, instead of a handle 24 with a swiveling cup 22, a diaphragm pump 33 with a hand drive handle 34 (Fig. 3) i is fixed on the bottom of the tank 1

The diaphragm pump 33 is provided with a direct action valve 35 with a reverse action valve 36 and a switch 37.

The device works in the following way.

When you press the tip 12 of the liquid valve 13 and overcoming the elastic force of the spring 21 during. contact with the surface on which the adhesive is applied in the tank 1 moves the rod 2, while simultaneously opening the liquid valve 13

and the air valve 20. Under the action of compressed air, penetrating through the opening 19 into the air cavity 4, the piston 3 moves and displaces the dose from the liquid cavity 5

glue through the holes 16 of the diaphragm 7 to the elastic interchangeable insert 10. The protruding above the edge 15 of the body of the nozzle 8 is an elastic insert 10 when in contact with the surface, on

the adhesive is applied, deforms and absorbs the dose of adhesive displaced from the cavity 5 during compression (to completely soak the newly installed elastic insert 10, the tip 12 is pressed several times).

When pressing the tip and in contact with the impregnated elastic insert 10 with the surface, the edge 15 of the nozzle body 8 is pressed tightly against the contact surface, clearing all irregularities, and the glue does not spread beyond the limits of the edge 15 of the nozzle body 8.

With the termination of the force of pressing on the tip 12, the supply of glue is stopped, since the liquid 13 and the air valve 20 are immediately simultaneously closed.

After repeated repetition of feed cycles and complete displacement of glue from cavity 5, the piston 3, moving upwards, enters with its recess 17 into the projecting non-operating part of the liquid valve 13 And sits on the diaphragm 7 with the whole plane. The next pressing of the tip 12 gives a pop that indicates stopping the process of applying glue and refilling the device with a new portion.

The device is refilled after removing the nozzle 8 with the interchangeable insert 10, the diaphragm 7, and the return of the piston 3 to the initial position downstream of the reservoir .1. To return the piston 3 to its original position, lightly push the protruding from the handle 24

tubes 27 of the swivel cup 22 and begin to turn the cup 22 around the axis along the transverse groove 26 until the spring pin 28 stops against the edge of the longitudinal groove 25 on the outer surface of the swivel cup 22.

Then swivel the cup 22 out of the handle 24 until the piston 3 stops in the bottom of the tank 1. With this, the pushed-in end of the figure spring 3 1. enters the V-shaped groove 32 on the piston 3, and the protrusion 18 of the piston 3 - into the hole 19 in the end face) a 1. After that, the swivel cup 22 with the rod 2 is returned to its original position, and the piston 3 remains at the end wall of the tank 1, fixed by a figure spring 31. When the air valve 20 is pressed on the outwardly protruding protrusion 18 of the piston 3 in its lowest position, the latter comes out of the engagement with the spring 31 and remains in the initial position.

After that, the device is placed in a vertical position and filled with glue. For filling purposes, you can use a special stand (not shown) in the form of an open ring on the racks for the possibility of placing a fitting with hoses.

The prepared portion of glue is poured into the tank 1 to the top, places the diaphragm 7 and puts on the nozzle 8 with the interchangeable insert 10. If the adhesive is not enough and the hardening in the pores of the interchangeable insert 10 is possible, it is removed after one-time use and put clean. Remove the adhesive-impregnated insert 10 is washed in a solvent, wring out and put to dry. After that, the insert 10 mo is replaceable. Can be reused.

In the aBTOHOMijtoM version of the device, the operation is similar and differs only in that air is forced into the air cavity 4 manually with the help of a diaphragm pump 33 simultaneously with pressing the tip 12 of the liquid valve 13,

Returning the piston 3 to its original position when refueling the device also

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It is also produced by a day of a fragmented pump 33 by sucking air from the cavity 4, for which the furnace switch 37 is set to open s of the valve 36 with a reverse action, shutting off the valve 35 of direct action. In this case, the rod 2 remains in place, as a result of which there is no need to fix the piston 3 at the end point, i.e. Figure 31 is a spring and a V-groove, 32 on the piston 3 in a standalone version are missing.

All parts, with the exception of stem 2, spring 21, spring pin 28, screws 30 and figure spring 31 are preferably made of plastics such as polyamide, polypropylene for reducing the weight and weight of adhesion of adhesive to the working surfaces.

The application of the proposed device design provides for reliable and economical application of viscous polymer adhesive compositions, effective impregnation of reinforcing materials with them, in particular glass fabrics, with their simultaneous compaction. Coating can

, - be carried out both on horizontal and on vertical and ceiling surfaces.

The simplicity of the device design eliminates the formation of stagnant zones and the solidification of residual adhesive composition in the tank, which ensures simple removal of residual glue, facilitates maintenance and increases the efficiency of the device.

The device can be used in confined spaces and hard-to-reach places to combine the advantages (brushes or rollers and mechanized means for applying liquid formulations).

The device is convenient for applying paint and varnish coatings, as well as toxins of liquids, and can be widely used in the repair and preventive protection of ship hull structures by shaping fiberglass by separate sections in small areas.

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Claims (1)

DEVICE FOR APPLICATION OF ADHESIVES, comprising a reservoir with a spring-loaded stem with a piston, liquid and air valves inside, and a removable nozzle, characterized in that, in order to increase work efficiency and improve the operational characteristics of the device, the nozzle is made in the form of a hollow elastic body with a pointed edge and is equipped with a diaphragm with holes installed in it and a porous elastic insert placed on it with a central channel, and the liquid valve is equipped with a tip passing m through the central channel to the level of insertion of the armature Pusa nozzle edge and is mounted to overlap the aperture holes, wherein the slot formed in the piston under the liquid valve. cl ju 05 cl