SU550960A3 - Solid adhesive block and method of its manufacture - Google Patents

Description

3

the cone of the cone flange. Moreover, the end of the workpiece is deformed with a forming tool with a bevel, on its outer end part, having an angle different from that of the inner end part of the form, with the formation of a thinned flange.

FIG. 1 shows a general view of an adhesive unit with one flange at the end; , on FIG. 2 is a longitudinal section of the adhesive unit “and FIG. one; in fig. 3 is a longitudinal section of the adhesive unit with a flange of a more rigid material; in fig. 4 is a longitudinal section of the adhesive unit with a flange of a more rigid material, made in the form of a truncated cone with a sleeve covering the end of the block; in fig. 5 shows another embodiment of a block with a flange (as shown in FIG. 4); in fig. 6 is a longitudinal section of the block with a casing of more rigid material enclosing it; in fig. 7, 8, 9 shows the successive stages of the process of cold forming an adhesive block; in fig. 10 and 11 - options for block expansion.

The adhesive unit (see Fig. 1 and 2) has an elongated cylindrical body 1 with a convex front end 2 and a flange 3 at its other end. The flange 3 is made in one piece with the block and has a bevelled part 4. The flange has the following form: and dimensions to ensure tight contact of the adhesive block with the gun STOLVO, in which this block is used. In order to prevent the formation of airbags between adjacent blocks, placed in the barrel, usually the front end of the block and the end facing the means of movement, have a shape that allows the combination of the ends of nearby blocks.

FIG. 3 shows a block with a flange 6 fixed with a skirt 7 fastened to it with a spike 5. The flange 6 can be made of heat absorbing plastic material which, when mixed with the melted adhesive material, does not reduce its adhesiveness. In addition, the flange 6 can also be made of an adhesive material melted at a high temperature, which is more rigid at room temperature than the material of the block. The flange 6 can be made with a sleeve 8, covering the end of the block, while the working surface of the flange is flat.

FIG. 5 shows a block with a flange having a sleeve, the inner diameter of which is somewhat smaller than the outer diameter of the end of the block. In this case, the unit 1 is installed in the sleeve 8 with effort. The adhesive unit 1 may be arranged in a holder 9 provided with a support flange 10 made in one piece with the holder. O. reamer in this case performs two functions: it maintains a certain shape of the block and forms a seal in the barrel of the gun. The blocks can be made with a series of flanges arranged in parallel in the form of covering the onusav 11 (see Fig. 10) or rings 12 (see Fig. 11).

Part of the cones 11 can be turned with a large base towards one end of the block, and the other part towards the opposite. In such a case, it does not matter how the end of the block is inserted into the barrel of the gun. Each of the flanges performs the function of a stuffing box in the barrel. Preferably, the cones 11 are made by turning the block on a lathe. The flanges 12 in the form of rings can be made in the process of cold rolling or extruding. The finished unit is placed in the barrel of the gun. When applying more than one block in the barrel, the last one in the course of the block moves compressed air and pushes the fleas in front of it to

15 outlet hole of the trunk.

The blocks shown in FIG. I-6, can be made by casting or cold forming (see Fig. 7-9). During the preliminary casting, elongated cylindrical billets 13 of adhesive material with flat ends are obtained. Then the workpiece 13 is placed in the form 14. The inner surface of the form at one end of the window. Then, the end of the cylindrical billet is deformed by the forming tool 15. The forming tool has a tapered end 16 and a cylindrical recess 17. When the forming tool is pressed into the workpiece 13, an annular groove 18 is cut into it

0 form (Fig. 9). Groove 18 provides the elasticity of the flange and contributes to a more tight fit of the flange to the surface of the barrel under the influence of compressed air.

The shape of the flange can be changed by fitting the forming tool with different bevel angles of the working surface. In the manufacture of a block, the forming tool (or shape) can be rotated, which facilitates the manufacture of blocks from their original hard materials, since this generates additional heat to facilitate the formation of the block. The use of the described blocks will significantly simplify the design of spray guns.

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Claims (12)

1. T1b.dy adhesive unit used in devices for applying under pressure 0 liquid material on the product, made of molten elastic material, characterized in that, in order to ensure its movement in the said device by simplified means, for example compress 5 with air, the blockage is provided with at least one flange in the form of a stuffing seal, and at least one at least one portion of the block end face, facing the means of its movement, is made flat. 0 2. The block but p. 1, characterized in that it is provided with a single flange located at the end of the block facing the means of its movement. 3. The unit according to claim 1, wherein that it is provided with a number of flanges located along the block at a distance from each other. 4. Block by CPU. 1 and 2, characterized in that the flange is made in the form of a truncated hollow cone, with a large base facing the means for moving the block and forming a Y-shaped annular groove with the central part of the block end. 5. Block on PP. 1-4, characterized in that the flanges are made in the form of truncated cones covering the block, some of which face large bases towards one end of the block, and the other part toward the opposite-facing end. 6. Block for l. 3, characterized in that the flanges are made in the form of rings parallelly located on the block at the same distance from each other. 7.Block pop. 1, characterized in that it is provided with a collar enclosing it with a support flange at the end, which is made of a more rigid material than the material of the block. 8. The unit according to claim 1, of which is provided with a flange mounted on its end, made of a more rigid material than the block material. 9. The unit according to claim 8, characterized in that the flange is provided with a skirt made of an elastic material, facing the widened part of the "displacement means. 10. The unit according to claim 8, characterized in that the flange is made in the form of a truncated cone with a sleeve connected to its smaller base and covering the end of the block. I. A method for manufacturing a solid adhesive unit according to claim 1, comprising forming it from an initial material, characterized in that the molded preform is placed in a mold having a bevel in the inner end part so that the end of the preform is located close to the CoM. , this end is deformed to fit its "bevelled surface of the mold" and a ring-shaped groove is cut at the end of the billet with the formation of a conical flange. 12. The method according to claim 11, wherein the end of the workpiece is deformed with a forming tool with a bevel on its outer end part having an angle different from the bevel angle of the inner end part of the mold, with the formation of a thinned edge on the flange. Priority for items: 11/20/73 pp. 9, 10. 14.01.74, "at least one portion of the block end face, facing the means of its movement, is made flat by claim 1. 14.01.74no paragraphs 4, 5, I, 12. 14.03.74. 3, 6. WGSources Information taken into account during the examination 1. US patent No. 3406905, class. 239-84, 1968. rig 6 phage. five ft / i.8 9 games 9