SU1738427A1 - Apparatus for making corrugations in sheet material - Google Patents

Abstract

Device for corrugating sheet material. Usage: in small-scale production of corrugated sheets. The device contains two sets of shaping tools, each of which is made of two fixed plates, carriages mounted on them with guide sleeves and movable bars, as well as flexible elements fixed on the bar and tension levers. The adjustment movement of the slats provides adjustment to a different height of the corrugation. 8 il.

Description

The invention relates to the processing of metals by pressure, in particular to devices for corrugating sheet material.

A device is known for bending sheet material into a wave-like form, comprising a billet pressing mechanism mounted on a housing, a lever-eccentric actuator in a direction perpendicular to the plane of the workpiece, forming tools located on both sides of the billet (see USSR Author's Certificate No. 262069 , class B 21 D 13/00, 1963).

A disadvantage of the known device is that with rigid lever-eccentric drive mechanisms of tools, it is possible to obtain blanks with waves of only one height.

The purpose of the invention is the expansion of technological capabilities.

This goal is achieved in that the device for corrugating sheet material contains sets of forming tools placed on both sides of the plane of the feed of the workpiece, each of which is made in the form of two fixed plates, carriages installed with the possibility of adjusting movement along the corresponding carriage, flexible elements fixed with ends on the respective slats, and tension levers hinged on the corresponding plate and placed in the guide sleeves of the carriages. The invention allows to expand the technological capabilities of the device for corrugating sheet material by expanding a range of corrugations through the use of slats installed with the possibility of adjusting movement along the corresponding carriage and fastening the ends of the flexible elements on the respective slats.

FIG. 1 shows the proposed device; in fig. 2 is a diagram of the mutual arrangement of the forming bodies of the device; and

with

with

H with

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feed stock; in fig. 3 shows the arrangement of the forming bodies and the workpiece during the corrugation; in fig. 4 shows a kinematic diagram of the movement of the guide bushings and tension levers; in fig. 5 is a diagram of the mutual arrangement of the forming bodies of the device and the supplied workpiece when changing the shape of the corrugations; in fig. 6 is a diagram of the mutual arrangement of the forming bodies and the workpiece during corrugation (when the shape of the corrugations is changed); in fig. 7 is a kinematic diagram of the movement of guide bushings and tension levers when the shape of the corrugations is changed; in fig. 8 is a reinforced diagram of a drive for carriages and slats mounted on the two lower fixed plates.

The device for corrugating sheet material contains sets of forming tools located on both sides of the plasticity of feeding the workpiece, each of which is made in the form of two fixed plates (upper 1 and lower 2). The carriages 4 are mounted on the respective plates 3. Tension levers 5 are hinged on the corresponding plate and placed in the guide sleeves of the 6 carriages 4. The flexible elements 7 (flexible traction bodies, chains, ropes) having a forming effect on the workpiece 8 are fixed with ends on the respective strips 9. The attachment points of the tension levers 5 on the plates of the upper and lower forming tools are shifted relative to each other by the magnitude of the wave step. The length of the flexible elements 7 and the points of attachment of their ends on the respective bars 9 are chosen so that when the tension levers 5 are brought into a vertical position or in a number of cases, they deviate from the vertical by a given angle a, they are tight. For this purpose, for example (see Fig. 4), the attachment point B of the flexible element 7 passing through the point D (the end of the tension lever 5) is chosen on the bar 9 so that it lies on the same straight aa c point of attachment, t. C (point coinciding with guide sleeve 6).

In the initial position, before starting work, the tension lever OD is deflected from the vertical and the flexible element 7 is not tensioned. Moving the carriage 4 in the direction of arrow A (see Fig. 4), the tension lever OD rotates around point O to occupy the vertical position, and the guide sleeve moves along the tension lever OD. In this case, the distance between the end of the tension lever OD, through which the

the flexible member 7 and the guide bushing increase from DC to D C. A similar pattern occurs on other plates. The result is a tension of the flexible

an item.

In order that the tension levers 5 installed on the upper and lower plates do not interfere with each other during their movement, the distance between, for example, the lower two fixed plates 1 may be larger than between the upper two fixed plates 2.

The device works as follows.

5 In the initial position, the tension levers 5 are deflected from the vertical at a certain angle. The workpiece 8 or part of the sheet material set between the forming tools (Fig. 2). Moving carriages

0 4 on the upper 1 and lower 2 fixed plates in the direction of arrow A, tension levers 5 are set in motion. Flexible elements 7 connected with tension levers 5 gradually approach the workpiece 8;

5 are then pulled in and, in contact with it, have a shaping effect (see FIG. 3). Thus, the process of corrugation is carried out. With further movement of the carriages 4 in the direction of the arrow

0A (or B) the flexible elements 7 come out of contact with the workpiece 8, which is then removed from the space between the forming tools, the feed and removal unit of the material being processed is not given in the device description, already tested samples can be used as such (see A.S., USSR No. 262069, cl. B 21 D 13/00, 1963 and others). After removing the product from the work area

0 by moving the plates 3 in the direction of the arrow. The tension levers 5 are returned to the initial position and the corrugation process is repeated with a new billet or part of a sheet material.

5 In FIG. 5-7 shows the stages of operation of the device when changing the shape of the corrugations. In particular, in order to change the shape of the corrugation, you need to do the following. Move the bar 9, on which the ends of the flexible elements are cracked relative to the carriage 4 in the direction of arrow F (see Fig. 5) and fix it (using, for example, retainers) position on the carriage 4. In this case the position of the tension lever 5 and The flexible element 7 will be approximately as shown by the dotted line in FIG. 7. In this case, as seen in FIG. 7, on a straight b-b (perpendicular to the plane in which the carriage and the plate are located) there will be a point K of attachment of the guide

bushings. Point E of attachment of the end of the flexible element on the strip 9 will not lie on the b-b line.

This leads to the fact that the process of corrugation will differ somewhat from that shown in FIG. 2-4. Namely, when the carriage 4 will move in the direction of arrow A, then rotating with respect to m. O, the tension lever 5 causes the tension of the flexible element 7 not yet income at a certain angle a to the vertical position (as in the case shown in FIG. 3). This is shown in FIG. 6 and 7. The shape of the corrugations will be changed.

Claims (1)

Claims The device for corrugating sheet material, containing sets of forming tools located on both sides of the plane of the feed of the workpiece, characterized in that, in order to expand technological capabilities by obtaining corrugations of different heights, each of the sets is made in the form of two fixed plates, carriages, mounted on a suitable plate and bearing guide bushings, uniformly placed along the carriage and slats installed with the possibility of adjusting movement along the corresponding carriage, flexible elements fixed with the ends on the respective slats, and tension levers hinged on the corresponding plate and placed in the guide sleeves of the carriages. J 1 Shchi2.1 BUT j / fig4 6 J teJ at at FIG. five Mt M, Phage. eight