SU1378870A1 - Method of manufacturing a leather sports ball - Google Patents

Abstract

The invention makes it possible to simplify the assembly technology of the ball and improve its quality. Form the fabric frame of the lobules. The lobes are laid end-to-end along the transverse symmetry line in layers. The upper layer is shifted relative to the lower half of the width of the lobules. The adhesive is preliminarily applied to the slices and allowed to dry. The butt-packed layers of the segments are fastened to each other along a transverse line of symmetry with a hot tool. The resulting strip is placed on the template as part of a sphere (hemispheres, 1/3 of a sphere). Edge portions of the slices are butt-assembled on a template and fastened together with a hot tool with the simultaneous formation of a window from the layers of the edge slices not glued together between themselves. Get the frame m cha. Remove the frame through the window with the template. An inflatable rubber chamber is inserted into it. Inflate the camera. Paste on the frame of the boundary tape of raw rubber. Vulcanize in the mold. Then paste the leather segments of the upper wear-resistant layer. 3 il. cl

Description

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The invention relates to sports equipment, in particular to the production of sports balls, such as football, volleyball or handball.

The purpose of the invention is to simplify the assembly technology and improve the quality of the mech.

FIG. 1 shows a diagram of the assembly of the fragments of the frame of the ball; in fig. 2 - frame, general view; in fig. 3 - framework for the manufacture of the frame, side view.

The method of making a leather sports bag includes the formation of a multi-layer fabric spherical skeleton of the I segments of regular geometric shape, obtained by dividing the sphere by meridians into even numbers, mostly 12 (Fig. 1).

On the stamped lobules, glue is applied to the compound and let it dry. The slices are laid on a flat surface butt-wise along the line of their about 10

15

pressing - ironing the fabric layers of the frame with adhesive thermal composition, thus forming a dense elastic frame that takes the shape of an ideal ball.

Leather slices are glued between the demarcation lines, and the almost finished m will interfere in the ipecc form and iron the upper leather layer at 80-100 ° C and an overpressure of about 3-4 atm. Withstand mh 3-4 min, and then ready mh removed from the mold, and it is ready to use.

The segments of the tissue skeleton of different layers are stamped with a shift in the direction of the basis of the fabric at an angle of 45 or 22.5 °. It is possible to stamp the segments of two glued layers of fabric, stacked one on the other with a shift in the direction of the fabric base at the indicated angles. Two layers of glued fabric are well stamped and well glued.

pepper symmetry. The segments of the upper layer 20 of the figures are end-to-end with each other, so that the materials are moved relative to the segments of the lower laminated frame of the ball.

half the width of the lobule. The slices of the double-layered fabric are also stamped under

blown in layers with their adhesive

surfaces one to another. Then fix | lams 45 and 22.5 ° (the first layer with respect to the second layer).

lay the layers of the lobules between

25

40

hot roller on the line. The newly created strip of lobules is placed on template 2 (Fig. 3a), which is a part of a sphere (hemisphere) with a protrusion 3. A cloth circle 4 is put on the latter, on which edge segments of the segments are collected and fixed with each other Q, first at one vertex, then at another. Half of the extreme segments of the lower 5 and upper 6 layers remain unglued to form a window, with the help of which the frame is removed from P1Ablon 2. At the pos; 1– - it (Fig. 3 b), representing 1/3 (Fig. 3 b) ball, glue the layers of slices at individual points in the areas from the tops to the middle line O - O, turning the frame but the surface of the pattern.

A rubber inflatable chamber is placed in the frame through the window, positioning it K. ia-pan in the hole of the circle 4, inflate it to a certain size, seal the window, butt-glue the half parts of the edge slices of layers 5 and 6.

Top roTOBoi O of the frame is glued with raw rubber tapes, the frame is placed in a heated mold, the inner surface of which is an ideal ball with engraved grooves corresponding to the demarcation lines of the leather segments of the upper wear-resistant layer.

The vulcanization in the mold takes place at 140-150 ° C and an overpressure in the range of 5-6 atm, which is created by inflating the inflatable chamber, for 10-12 minutes.

Simultaneously with the process of vulcanization of rubber tape, a thermal

The proposed method of manufacturing ballings eliminates sphericity defects as compared to the technology of making a skeleton of thread and cord and increases productivity, while eliminating the process of making hollow balls of brittle material.

Claims (1)

Invention Formula A method of making leather sports ball, for example, football, volleyball or handball, including the formation of a multi-layer fabric spherical frame, slices of regular geometric shape on the template while simultaneously gluing them together, making the window in the frame, removing the template through it, mixing through the window the cavity of the rubber inflatable chamber frame and its inflation, sealing the window with an edge slice of the upper layer, laying on the frame tapes of raw rubber, molding the frame in a mold under pressurized at elevated temperature to form grooves for the leather upper layer slices and the subsequent sticking of the leather slices to the frame, characterized in that Q simplify the assembly technology and improve the quality of the ball; the formation of a multilayer gcan frame is carried out by stacking slices with a pre-applied and dried adhesive butt-bonded composition along the transverse symmetry line of the slices in each layer and half the width of the lower segment; 1o followed by the 1st fixation of the layers of lobules among themselves along the transverse line of symmett45 pressing - ironing the fabric layers of the frame with adhesive thermal composition, thus forming a dense elastic frame that takes the shape of an ideal ball. Leather slices are glued between the demarcation lines, and the almost finished m will interfere in the ipecc form and iron the upper leather layer at 80-100 ° C and an overpressure of about 3-4 atm. Withstand mh 3-4 min, and then ready mh removed from the mold, and it is ready to use. The segments of the tissue skeleton of different layers are stamped with a shift in the direction of the basis of the fabric at an angle of 45 or 22.5 °. It is possible to stamp the segments of two glued layers of fabric, stacked one on the other with a shift in the direction of the fabric base at the indicated angles. Two layers of glued fabric are well stamped and well glued. Two-layer fabric is also stamped under at | lams 45 and 22.5 ° (the first layer with respect to the second layer). The proposed method of manufacturing ballings eliminates sphericity defects as compared to the technology of making a skeleton of thread and cord and increases productivity, while eliminating the process of making hollow balls of brittle material. Invention Formula A method of making leather sports ball, for example, football, volleyball or handball, including the formation of a multi-layer fabric spherical frame, slices of regular geometric shape on the template while simultaneously gluing them together, making the window in the frame, removing the template through it, mixing through the window the cavity of the rubber inflatable chamber frame and its inflation, sealing the window with an edge slice of the upper layer, laying on the frame tapes of raw rubber, molding the frame in a mold under pressurized at elevated temperature to form grooves for the leather upper layer slices and the subsequent sticking of the leather slices to the frame, characterized in that simplify the assembly technology and improve the quality of the ball; the formation of a multi-ply gcane frame is carried out by stacking slices with a pre-applied and dried adhesive butt composition along the transverse line of symmetry of the slices in each layer and displacing the upper-layer slices by half the width of the lower lobe slice. the subsequent 1st fixation of the layers of lobules among themselves along the transverse line of symmetry of the segments and segments of the edge segments of the segments among themselves on a pattern that is a hemisphere or 1/3 of a sphere. with the simultaneous formation of a window between the halves of the edge slices of the lower and upper layers. FIG. 2 g