RU195519U1 - GLUE STAR - Google Patents

Abstract

The utility model relates to the space industry, and in particular to devices for applying glue or pastes with a thin layer on the mating surfaces of electronic equipment, radio and electronic products. The utility model can be used in the manufacture of civilian and military radio equipment. A useful model allows to improve the quality of the adhesive connection, namely, allows the adhesive to be applied with a layer of constant thickness in the range from 0.2 mm to 0.5 mm; allows you to form scallops of glue of equal shape. The specified technical result is achieved by the fact that the glue spatula (GC), containing a work surface with square teeth of equal height of 0.4-1.0 mm, is made of plastic, has a plane for fixing the position of the work surface at an angle 90 °, chamfer from 5.0 × 45 °. The proposed technical solution of the HQ is industrially applicable.

Description

The utility model relates to the space industry, and in particular to devices for applying adhesives or pastes with a thin layer on the mating surfaces of electronic equipment (REA), electronic radio products (ERI). The utility model can be used in the manufacture of civil and military radio equipment.

Known construction spatula according to patent RU No. 132826 (IPC E04G 21/20), which contains a handle and a working plate, with washers mounted on the working edge of the working plate in the form of cylinders with bases tapered at an angle of 65–75 degrees to the axis of the cylinder, and the side edges the working plate is provided with side walls along its entire length.

The disadvantages of this device are: the inability to apply glue in a thin layer, up to 0.5 mm thick; design complexity.

Known spatulas with a toothed working surface for tile work are known in the art. Toothed spatulas are used to apply and smooth glue on individual tile units. The size and configuration of the teeth manufacturers perform differently, based on need. It depends on the thickness of the adhesive composition, the required thickness of its layer, texture and condition of the treated surfaces. The thickness of the layer of adhesive applied depends on the size of the teeth - the larger they are, the thicker the layer. (Website: https://ratingstroy.ru/stroitelnye-instrumenty-i-obomdovanie/mchnoj-instnmient/kakimi-byvayut-stroitelnye-shpateli-i-kak-nauchitsya-razbiratsya-v-ih-prednaznachenii/). Table 1 summarizes the models with the minimum cavity depth (tooth height) in the model range:

A - triangular teeth, without large gaps between them;

B - triangular with large gaps;

S - triangular without gaps;

C - square;

R - rectangular (including irregular shape);

M - semicircular.

The shape of the teeth of the spatula determines the shape of the glue scallops, and it is the square shape of the scallops that provides the maximum initial contact area of both surfaces with the glue layer.

The closest in technical essence is a model C1 spatula from the above range of construction spatulas. Spatula C1 consists of a cold-rolled steel blade with a vinyl or wooden handle, the working surface has square teeth. The parameters of the spatula C1: tooth width - 4.0 mm, cavity width - 4.0 mm, cavity depth - 4.0 mm.

The prototype has the following disadvantages: the inability to apply glue with a layer up to 0.5 mm thick; direct dependence of the layer thickness on the angle of inclination of the working surface; lack of a plane to support the working surface; damage (scratches) to glued surfaces.

For the claimed device, the basic features common to the prototype are identified: the working surface of the adhesive spatula has square-shaped teeth of equal height; the interval between the teeth is equal to the width of the tooth.

The technical problem of the proposed utility model is: applying glues and pastes with a layer of constant thickness in the range from 0.2 to 0.5 mm; holding the working surface of the spatula at an angle of 90 °; the formation of scallops of glue of equal shape; absence of scratches on the glued surfaces.

The technical problem posed is solved in that the spatula made of plastic has an equal tooth height in the range of 0.4-1.0 mm, a plane for fixing the position of the working surface at an angle of 90 ° and a chamfer of 5.0 × 45 ° in front of the teeth.

In FIG. 1 schematically shows a General view of the adhesive spatula (hereinafter - HK), where a is the height of the teeth (depth of the cavity); In - the interval (the distance between the teeth); C is the width of the tooth; D is the width of the bar; E is the thickness of the bar; F is the height of the bar; G is the length of the tooth; H is the length of the bevel.

The bar is completely made of plastic (for example, plexiglass), therefore, unlike the prototype, it does not leave scratches on the glued surfaces. The height of the teeth A is in the range from 0.4 mm to 1.0 mm, and the length G is from 2.0 mm to 10.0 mm. This tooth height allows the adhesive to be applied with a layer of constant thickness in the range from 0.2 to 0.5 mm, and the tooth length allows effortlessly holding the barcode at an angle of 90 °. The width of the spatula D depends on the area of the mating surfaces and can be from 10.0 mm to 100.0 mm. The values of the interval B and the width of the teeth C are equal to 1.0 mm The value of the chamfer length N can be more than 5.0 mm.

In the claimed HQ there is a chamfer at an angle of 45 ° and a length of 5.0 mm or more. The chamfer provides a high pressure front in front of the teeth, due to which scallops of glue or paste of the same shape are obtained at the output.

The device operates as follows. A worker uses a putty knife as a tool to form an adhesive layer of constant thickness and remove excess. To do this, he puts glue or paste on one of the glued surfaces. He puts a spatula at an angle of 90 ° with a chamfer (cut) to himself. It removes excess glue or paste by tightly pressing the trowel to the surface with the paste applied at an angle of 90 ° towards you. The resulting scallops of glue or paste have a square shape, while the height of the scallops depends on the height of the teeth. For example, for applying an adhesive layer with a thickness of 0.2 mm with values of C, D, E equal to 1.0 mm, 1.0 mm, 0.5 mm, respectively, a tooth height of 0.4 mm will be required.

The main advantages of the claimed utility model:

- applying an adhesive layer of constant thickness in the range from 0.2 to 0.5 mm;

- the presence of a plane for fixing the position of the working surface at an angle of 90 °;

- the presence of a chamfer to create a front of high pressure;

- does not leave scratches on the surface of glued parts;

- increasing the productivity of the contractor.

The specified technical result is achieved in that the adhesive spatula containing a working surface with square teeth of equal height of 0.4-1.0 mm, has a plane for fixing the position of the working surface at an angle of 90 °, a bevel from 5.0 × 45 °.

Claims (1)

An adhesive spatula containing a working surface with square teeth of equal height, while the interval between the teeth is equal to the width of the tooth, characterized in that the spatula made of plastic has a tooth height in the range of 0.4-1.0 mm, a plane for fixing the working position surfaces at an angle of 90 ° and a chamfer of 5.0 × 45 ° in front of the teeth.

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