SU691296A1 - Corrugator for treating fresh-formed asbestos cement plates - Google Patents

Description

(54) WRINKER FRESH FORMED ASBESTOCEMENT SHEETS

 .

. The invention relates to equipment for the manufacture of blasting materials and can be used in the manufacture of asbestos cement corrugated sheets.

A machine builder known for manufacturing corrugated asbestos cement sheets without using pads-forms 1.

The disadvantage of this wiper is the lack of fixation of the sheet relative to the chain in the course of the wounding process, which leads to increased deformations and disturbance of the specified profile of the sheet.

The closest to the proposed invention is a loudspeaker of freshly formed asbestos cement sheets containing an upper and lower row of fan-shaped contiguous drive endless chains with shaped formacions: and elements mounted coaxially with each other. In the receiving part of this wiper, fixed tables are installed between the lower chains, and fixed fixed profiles above the tables. Due to the fixation of the wave crests by the profile forming elements of the upper and lower chains, the specified profile 2 is not disturbed during the process of lining.

The disadvantage of this ripper is, then. That there is a bending deformation on the radius, less than the normative, due to the sagging of the sheet in the areas between the chains, which often leads to cracking on the reverse side of the sheet.

0 The purpose of the present invention is to prevent cracking in corrugated sheets.

This goal is achieved by the fact that in the wander there are freshly formed asbestos-cement sheets containing upper and lower rows of endlessly moving drive endless chains mounted with a frame with profile Forming elements between which they are installed. fixed profile guides, profile guides installed along the entire length of the working part of the chains and made

5 curved in a vertical plane along a curve defined by the equation:

; Z (, Xl-C.OSeL) - -i: U-dL

where .X is the coordinate of the direction of insertion corresponding to the height

0

 watts in the process of pioneering; r is the ridge radius of the wave along the neutral line; r is the radius of the depression of the wave along the neutral line; 5 L is half the length of the unrolled

waves ;;

d is the angle of inclination of the wave to the horizontal plane, ..

FIG. 1 depicts the described JQ Forester, general view; in fig. 2 also / section along A-A in FIG. .one; on ig. 3 - the same., Plan view; Fig. 4 is the same, section B-B to yoke 3 (the beginning of flattening from the workpiece); in FIG. 5, the same section in section B-B in FIG. 3, (intermediate position); in fig, b - the same, section on GG in fig. 3; (ending, waving); in fig. 7 - the same

cross section along dd on. Fig. 3 (shown is the 20th post-curve, on which the guide is curved). . .: The air driver contains a frame 1 on which bearings are mounted: shafts 2 with sprockets. On these25

the asterisk X is mounted coaxially one under the other, fan-shaped, close to each other, endless chains 3 of the upper and 4 chains of the lower row bearing the profile forming elements 5 and 6.30 The elements of the lower extruded with a convex working surface.

Between the working branches of chains 3 and 4, over their entire length, fixed profile guides 7.35 are installed, made with a diameter corresponding to the profile of the front surface of the folded sheet, the number of guides corresponds to the number of hollows of the wafer & 40 sheet. The distance between the direction of the input at the input of & that correspond to the extended wave direction, and; on bycho sweep. Each profile guide 7 is curved. 5 in the vertical plane according to the curve determined by the above equation. ;

Construction of the curve along which. duty / to be Curved guide, is produced as follows (see Fig. 7):

The horizontal axis qC is plotted on the scale of the length of the guide K, This length corresponds to the greatest (i.e. normative) angle 55 hidii. (Fig. b). The total length K is divided into E equal sections, each of which is - which corresponds to the angle Y,. For each value of cC, the corresponding Z value calculated by the above equation is plotted vertically.

Volunteer works in the following way.

Pre-cut envelope asbestos-cement preform enters the receiving part of the wiper in the gaps between the mold elements 5 and 6 of the chains. The 3 upper chains of the 4 lower rows, ktotorai; §a press the workpiece in the places where the crests of the waves form and move them together; those with them gradually moving closer,, The profile guides 7 are installed so that during the whole process of waving they adjoin to the surface of the sheet blank, bending it along the normative radius, without subjecting it to additional stretching. Leaving the profiling chains 3 and 4, the folded sheet is fed to the following technological operations.

The use of the invention will improve the quality of undulating asbestos sheets, preventing cracking in them when waving.

Claims (2)

Invention Formula The air collector of freshly formed asbestos-cement sheets containing Ömontirovaynie on the bed coaxially with each other the upper row of a row of fan-like approaching drive; endless chains with core forming elements, between which are fixed profile guides, differing. By the fact that, in order to prevent cracking in the corrugated sheets, the longitudinal guides are installed along the entire length of the working part of the chains and are curved in the vertical plane along the curve defined by the equation: 2 (r-4-r W-coedL) "- U-iCr- -r 3sihA where Z is the coordinate of the height of the guide, corresponding to the height of the wave in the process of pacing; . r - radius of the ridge of waves neutral line; r is the radius of the wave neutral line; L is half the length of the unwrapped wave; OL is the angle of inclination of the wave to the horizontal plane. Sources of information taken into account in the examination 1, USSR author's certificate I 104529, class, B 28 B 1/52, 1953, 2. USSR author's certificate №423640, CL. B 28 B 1/52, 1972, Fi.Z