SU806204A1 - Apparatus fr producing honeycomb filler from strip material - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used in the aviation, rocket and other industries for the manufacture of honeycomb fillers. A device for manufacturing a honeycomb filler from a strip material, consisting of successively installed in accordance with the technological process of a mechanism for the production of rows of longitudinal slits, made in the form of circular knives, a mechanism for transverse corrugation of a strip material, made in the form of profiled rollers, is known. The simultaneous movement of the material of the mechanism of sequential bending along the slit lines until the formation of the honeycomb cells, which are systems bending rollers mounted on a transverse shaft relative to the material and by the number of increasing gradually from the shaft to the shaft, and the mechanism responsible for the final molding of cells 1. However, the known device provides the possibility of obtaining only flat honeycomb. In order to manufacture a curved, with a constant radius of curvature of the honeycomb core, the known device must be equipped with a bending mechanism, for example, a mechanism containing a die in the form of a comb, the tooth of which has a variable cross section in the longitudinal direction that ensures the correct shape of the cell, in particular, hexagon, in a cell of elongated shape in the transverse direction. It is this difference in shape that makes it possible to bend the sheet of the honeycomb filler along a curved surface 2. However, the mechanisms located in accordance with the required technological process are complex in design, and since they each have their own individual drive, they cannot provide quality cellular construction. the filler, in particular the accuracy of the slots in accordance with the location of the peaks and valleys of the longitudinal corrugations. The closest known solution is a device for making a honeycomb of strip material containing a block

knives for making transverse ps to cuts arranged in a staggered manner; a mechanism for longitudinal corrugation of a material, made in the form of a punch and die, having on the working surfaces, matching longitudinal protrusions with uniformly varying width and height at the lead-in area and with a constant width and height on the punch, in the calibrating area, the mechanism of bending the material along the lines of the slits, in the form of counter-movable comb 3}.

However, the known device is intended to produce a flat honeycomb core; To make a curved honeycomb honeycomb, the flat aggregate is additionally bent with a drum, but at the same time, the tops of the faces of the cells are diverged, which leads to a decrease in strength and, consequently, structural reliability. .

The purpose of the invention is to increase the strength and reliability of the honeycomb filler of constant curvature.

The goal is achieved by the fact that the punch is made in the form of telescopically mounted and spring-loaded — one relative to the other parts with an axis-symmetric arrangement of the working surface protrusions; the calibrating section of the punch and die is made two meters long between the knives and placed is a multiple of the distance between the knives, and has on the die changing in the longitudinal direction from the edges to the middle the width and height of the protrusions, and one of the combs of the bending mechanism, along the lines of the slits with the possibility of forced rotation.

FIG. 1 shows a diagram of the proposed device; in fig. 2 is a section A-A of the product in FIG. one; in fig. 3 shows the node I in FIG. 2 with corrugated material; in fig. 4-5 is a top and side view of the die matrix; in fig. 6-10 are sections of a die matrix in FIG. five.

The device contains a plate 2 placed on frame 1, with which a movable plate 3, a feed carriage 4 of material 5 with a fixed sponge 6 and spring-loaded to the sponge 6 with a sponge 7 and a comb 8 are connected through the columns. On the plate 2 the lower knife block 9 and the matrix 10 are mounted , and on the plate 3 aejixny the knife block 11, the composite punch 12 and the comb 13. The comb 8 is mounted on the carriage 14 with the possibility of vertical movement and forced rotation, and the comb 13 is spring-loaded relative to the punch 12.

Each block 9 and 11 consists of two knives located across the entire width of the material and having intermittent cutting edges, and these cutting edges on one knife are displaced, in a checkerboard pattern, relative to the cutting edges of the other knife. The distance between two knives S of each block is equal to the height of the cell of the honeycomb. The working surface of the punch 12 and the die 10, intended for the longitudinal corrugation of the material, is made in the form of mating longitudinal projections and depressions. In the first section 15, the working surface of the matrix 10 is spun out to-C with smoothly varying height and width of the projections and valleys, on the calibrating section 16, the projections have r max width and minimum height in the middle of the section. The length of the calibration section is equal to the distance between three rows of slits, i.e. 2S. The area is located at a distance from the knife block a multiple of 2S, for example, 6S. The unevenness of the width and height of the protrusions of the section 16 is due to the fact that in order to obtain a honeycomb curved along the radius, it is necessary through a row to obtain elongated cells that form the outer diameter of the core.

On the punch 12, sections similar to those on the die are made, but in the calibrating section the height of the projections is constant. The punch 12 is made in the form of telescopically mounted and spring-loaded one relative to another parts 17, 18 and 19 with an axis-symmetric arrangement of the projections of the working surface. To guide the honeycomb in the molding, a folding cover 20 is attached to the frame 1.

The device works as follows.

With the lower position of the plate 3, the right carriage 4, the material 5 is loaded into the carriage, advancing it along the cutting edge line of the 1st row of knives. After that, the device drive is turned on, plate 3 goes up, and carriage 4 moves the material to the left by a step equal to 2S. When plate 3 is moving downward, the blocks of knives 9 and 11 are made in the staggered order of the cuts and slits. With the subsequent submission of the material in step 2S vprlnn pieces. the next two rows of cuts, and the material with the previously made cuts falls into the area of the longitudinal corrugation.

At the lead-in area 15, equal to the gap between the 5 rows of cuttings (4S), is gradual. convergence of the corrugations, i.e. an increase in their height and a decrease in width. In the calibrating section 16, they are reformed with calibration by the elementary elements 17-19, which come into operation one by one, which ensures the formation without thinning.

Claims (3)

When lifting the top plate 3, the carriage 4 moves the material to step E 2, 2S. As a result, the lower end of the corrugated material is set on the teeth of the lower comb 8 with its projections. When the upper plate 3 moves down, the comb 13 enters the hollow of the corrugated material and bends . By turning the lower comb 8, the upper edges of the half cells are brought closer to full contact when they rest against the end of the matrix. The proposed device makes it possible to manufacture the honeycomb core with a flat curvature of almost ANY radius using simple means. . It is possible to manufacture this filler tube form. This expands the technological possibilities of the proposed device. Since the device provides a tight fit of the upper edges of the cells to each other, the quality, i.e., strength, rigidity, reliability, increases by 2–5 times depending on the curvature of the product. The proposed device has an increased productivity in comparison with the existing plants for the manufacture of honeycomb fillers which completely eliminates manual labor in the manufacture of curved honeycomb fillers and automates the technological process of their production. Economic efficiency from its implementation on the order of 25.0-30.0 thousand rubles. Formula of the invention. A device for the manufacture of soto. the first placeholder of a strip material containing a knife block (1 for making transverse rows arranged in staggered cuts, a mechanism for longitudinal corrugation of the material, made in the form of a punch and a die, having on the working surfaces matching longitudinal protrusions with uniformly varying width and height at the lead-in area and with a constant width and height at the punch at the calibrating area, as well as the mechanism of bending the material along the lines of the slits in the form of an all-round interloader combs, characterized in that In order to increase the strength and reliability of the honeycomb core, such as cylinders, the punch is made in the form of telescopically installed and spring-loaded one. Regarding the other parts with an axis-symmetric arrangement of the working surface projections, the calibrating section of the punch and die is made a length of knives at a distance that is a multiple of the distance between the knives, and has on the matrix the width and height of the protrusions varying in the longitudinal direction from the edges to the middle, and one of the comb of the bending mechanism along the lines of the slits is installed with the possibility of forced rotation. Sources of Information taken into account in the examination 1. US Patent No. 3162942, cl. 29-45S, 1964. 2. US patent number 3702072, cl. 72-307, 1972. 3. Stamp 70119.004.00.000. RE, 1973 (protatype). C / / XxWW m / 5/5/7 //// Z z / .one M FI.4 at 6 6 Bb Yr Dl Fy Fig.Z Fii.10