RU97115715A - METHOD FOR MAKING A SAFETY PRODUCT - Google Patents

Claims (17)

1. A submersible model (1) for the manufacture of a safety device consisting of an elongated cylindrical part (2) with an end closed by an S-shaped profiled section (3) and an adjacent reservoir part (4), the profiled section (3) having a recess (6), formed by two truncated cones (8, 9), joined together by small upper bases, and the gradient changes continuously in the longitudinal direction of the surface of the immersion model (1), characterized in that
the diameter (D5) of the immersion model (1) at the narrowest point of the recess (6) is from 15 to 25 mm;
the radius (R1) of curvature at the narrowest point (D5) of the recess (6) is from 17 to 20 mm;
the angle of the solution of the upper, open toward the reservoir part (4) of the truncated cone (9) is 50 °;
the angle of the solution of the lower truncated cone (8) is 40 °;
the curvature at the transition from the cylindrical part (2) to the recess (6) in the profiled section (3) is convex and has a radius of more than 25 mm;
the total length from the recess (6) to the entrance to the reservoir part (4) is from 45 to 65 mm;
the largest diameter (D2) of the profiled section (3) in the interval between the recess (6) and the entrance to the reservoir part (4) is from 33 to 35 mm. 2. A submersible model (1) for the manufacture of a safety device consisting of an elongated cylindrical part (2) with an end closed by an S-shaped profiled section (3) and an adjacent club-shaped reservoir part (4), and the profiled section (3) has a recess (6) formed by two truncated cones (8, 9) joined by small upper bases, and the gradient changes continuously in the longitudinal direction of the surface of the immersion model (1), characterized in that
the radius (RЗ) of concave curvature in the transition zone between the reservoir part (4) and the profiled section (3) is greater than or equal to 12 mm;
the tangent at the inflection point of the S-shaped curve in the profiled section (3) between the zone in which the diameter (D2) of the profiled section is maximum and the transition zone between the profiled section (3) and the reservoir part (4) forms an angle with the central longitudinal axis of the immersion model (1) from 40 to 75 ^o .  3. The submersible model according to claim 2, characterized in that the diameter (DЗ) in the zone of entry into the reservoir part (4) is from 6 to 11 mm in the lower section, and the maximum diameter (D4) of the reservoir part (4) is from 11 up to 14 mm.  4. The submersible model according to claim 2, characterized in that the radius (R4) of convex curvature in the zone of the closed end of the reservoir part (4) is about 6 mm.  5. The submersible model according to claim 2, characterized in that the curve forming the club-shaped reservoir part (4) has such a shape that promotes uniform distribution of the applied elastic material (latex).  6. Submersible model according to any one of the preceding paragraphs, characterized in that at least one annular groove (17, 18) is located in the smallest diameter zone (D5) of the recess (6).  7. The submersible model according to claim 6, characterized in that in the presence of more than one annular groove (17, 18), the distance between these grooves (17, 18) is about 1.5 mm.  8. A method of manufacturing a safety device, consisting of an elongated cylindrical part (2) with an end closed by an S-shaped profiled section (3) and an adjacent reservoir part (4), and a profiled part made of thin-walled elastic material, wherein the safety means applied in immersion baths from the outside onto an appropriate form of a preservative, an immersion model comprising the following stages: immersion of the model (1) in the applied elastic material (latex) in two stages (10, 13) of immersion When simultaneous rotation around its longitudinal axis in an inclined position with respect to the surface of resilient material; drying (23, 24) after each stage (10, 13) of immersion; and removal of the finished safety device with the help of brushes rotating in opposite directions (25, 26) and at least one water stream colliding with the submersible model (1) (27, 28).  9. The method according to p. 8, characterized in that at least one water stream (27, 28) is oriented in such a way that during the removal process it directly collides with the submersible model (1) under the safety device that is rolled up into the ring (7) .  10. A method of manufacturing a safety device having a plurality of annular grooves (17, 18, 34) on the surface, characterized in that the annular grooves (17, 18, 34) are ground on the surface of the immersion model (1) using a grinding wheel with at least one fine-grained diamond cutting edge (32), the angle (α) at the apex of which is from 60 ° to 120 °, and the front part (33) of the diamond cutting edge (32) is blunt.  11. The method according to p. 10, characterized in that the height (H) of the blunting (33) is from 0.2 to 0.6 mm  12. The method according to p. 10, characterized in that five diamond cutting edges (32) are provided on the grinding wheel (30).  13. The method according to p. 10, characterized in that using a blunt diamond cutting edge (32) perform annular grooves (17, 34), which do not have sharp angles and a solution (B) of which is from 0.2 to 0.6 mm  14. The method according to PP. 10 and 13, characterized in that the annular grooves (17, 18) are symmetrical about their central axis (35).  15. The method according to PP. 10 and 13, characterized in that the annular grooves (34) are performed asymmetrically relative to their central axis (35) so that the wall (36) of the annular groove (34) located relative to the axis (35) of this groove on the side of the elongated part of the model, has a steeper rise than the wall (37) located relative to the axis (35) of this groove from the side of the profiled section of the model.  16. A method according to any one of the preceding paragraphs, characterized in that the ratio between the distances (A, A ′) to the central axis (35) of the annular groove (34) is approximately A: A ′ = 1: 2.  17. The device according to p. 10, characterized in that the angle (α) at the top of the diamond cutting edge (32) located on the periphery of the grinding wheel (30) is from 60 to 120 °, and the front part (33) of the diamond cutting edge (32) ) dull.