SU899318A1 - Stand for assembling and welding stiffening ribs with width - Google Patents

Description

I

The invention relates to shipbuilding, in part to devices for the manufacture of flat sections of ship hulls and can be used in other branches of the tree: A household in the manufacture of frame and metal structures.

Apparatus for assembling and welding; stiffening ribs with a cloth containing I support for setting the cloth, a welder and a portal, some of which are clamped, at the ends of the rods - which the clamping pins are installed. Pinch pushes, pressing the stiffeners from above on the horizontal shelf, ensure uniform fit of the welded rib to the surface of the panel 11.

The disadvantages of this device are the impossibility of fixing the welded stiffener in the required welding position, as a result of which the rfftii cn is reduced. welding ribs.

Known devices for assembly and weld-. reinforcement ribs with a panel containing the above-mentioned supports, automatic welding machine and gantry, time / pipy design lateral clamps, grips or electromagnets, fixing the welded stiffener in the welding position 2.

It is also known a device comprising a support for mounting a sheet, as well as a portal with a welding machine and clamps, made in the form of clamping n, attached to the hydraulic cylinder rods and grippers 3.

ten

This device, in comparison with analogs, has the advantage that the role of side clamps is to be captured (not located on the side of the stiffener, but on the top of the rib, in the plane of the cylinder side of the press.

However, self-supporting hydraulic cylinders are used to clamp and grip the stiffeners, which complicates the design of the stand.

The goal of the pioneer is to increase productivity.

Claims (3)

The goal is achieved by the fact that in the stand containing the support for the installation of the cloth, as well as the portal with the automatic welding machine, grippers and clamps, made in the form of 1FIGIMATE pt fixed to the rods of the hydraulic cylinders, the clamping elements are made in the form of hollow shells, and the grips are placed in the mentioned cases and spring-loaded to them. The springing of the claws to the clamp pads mounted on the rods of the hydraulic cylinders of the pressure clamp ensures the transfer of forces to the claws and the clamping of the stiffener with a predetermined force, which in a known way was ensured by the rod of the independent hydraulic cylinder. The implementation of clamping n in this case in the form of hollow housings allows them to be used as guides for grippers. The guides are necessary for the directional movement of the grippers and the installation of a spring. This combination as a whole ensures the combination of the work of the pressure pin and the grip, on the rod of one hydraulic cylinder, and, consequently, the elimination of the hydraulic cylinders of the grip and thus the simplification of the structures of the stand itself. FIG. 1 schematically shows a stand, a general view; in fig. 2 is a cross-section A-A along the axis of the pressure pin and the grip. The stand consists of a support 1, onto which a sheet is fed, and a portal 2, carrying the trolley of the welding machine 3. The clamping cylinders 4 are mounted on the portal, at the ends of the rods of which the clamping pins are reinforced in the form of hollow shells 5. Inside each case 5 is placed spring-loaded to it the spring 6 is a gripper consisting of the liner 7, a slider with a wedge side surface 8 and levers 9 hingedly mounted on the liner so that it can be rotated under the action of the wedge surface of the slider, and the slider is spring-loaded to the liner spring 10.. The force of clamping stiffeners is chosen experimentally, depending on the profile and size of the ribs. The force of the spring 6 is calculated by the well-known formulas depending on the force of the rib, the lengths of the levers and the angle of inclination of the wedge surface a. With the force of clamping stiffeners in 10 kN, depending on the length of the levers 2: 1, angle 45 and spring 6 is selected with a working force of 20 kN. The stand works as follows. In the initial position, the rod of the hydraulic cylinder 4 is in the upper position, the slider 8 under the action of the spring 10 is in the lower position, the levers 9 are separated to the sides, the panel is fed to the support 1, the stiffener is installed and the panel. 8. The hydraulic cylinder 4 is turned on, its rod is lowered together with the pressure pint 5 and the grip. The slider 8 rests on the stiffener and stops moving, compressing the spring 10, while the levers 9 are lowered together with the housing 5 and the liner 7 and under the action of the cool surface of the slider 8 rotate, clamping the stiffener. The housing 5 is lowered by compressing the spring 6 until its edge B is pressed against the stiffener, after which the rib is pressed against the panel. A compressed spring 8 provides a predetermined working force to clamp stiffeners. Clamped by the levers 9 in a predetermined position and pressed to the panel by the edge B of the body S by the force developed by the hydraulic cylinder 4, the stiffener is welded on one or both sides by the welding machine 5. After welding, the shafts of the hydraulic cylinders 4 are raised, the levers 9 under the action of the slide 8, mixed by the force of the spring 10 are diluted to the sides by unclamping the stiffener. The technical and economic efficiency of the proposed stand allows us to simplify the design of the stand by reducing the number of hydraulic cylinders and their controls, and thereby reducing the cost of its manufacture. The expected annual economic effect of cost reduction in comparison with the known will be 1.2 thousand rubles, with an annual program for the production of stands of 2 pcs. In addition, there is no need for maintenance) 10 {your capture hydraulic cylinders and control units, which will reduce the time for maintenance of the stand and maintenance cost by an average of 10%. Increase stand productivity, i.e. the time for gripping and clamping the stiffeners will be reduced, since gripping and clamping of the stiffeners is done by one movement of the clamp hydraulic cylinder rod. The increase in bench productivity in comparison with the known one will be 5%. In comparison with the base object, the expected annual economic effect will amount to 8 thousand rubles in one stand. Claims of the invention A stand for assembling and welding stiffeners with a panel containing a support for mounting the panel, as well as a portal with a welding machine, grippers and clamps, made in the form of clamping pts attached to the rods of hydraulic cylinders, which is more than in order to increase the production of the displacement, the iridescents are performed in the end of hollow shells, and the grips are housed in the said shells and are spring-loaded to them. Sources of information taken into account in the examination of 8993 18 1. Author's certificate N 307002, cl. B 63 B 9/00, 12.25.69. 2. The author's certificate number 408849, cl. B 63 B 9/00, 25: 11.71. 3. Author's certificate N 570470, kp. At 23 K 37/04. 05/03/73 (prototype).