SU893317A1 - Apparatus for bending elongated articles - Google Patents

Description

(St) DEVICE FOR FLEXIBLE LONG-DIMENSIONAL

I

The invention relates to the processing of metals by pressure, in particular to devices for the bending of tubular electric heaters.

Closest to the proposed technical essence and the achieved result is a device comprising a housing with a drive rod mounted in it, on which a mandrel is fixed, and mounted for movement in a direction perpendicular to the axis of the rod, bending elements consisting of the casing of two shoulders with a cam surface and with bending rollers attached to the arms, and the drive rod has two rollers in contact with the cam surface of the levers 1 J.

A disadvantage of the known device is that it can bend products ONLY in one size. PRODUCTS

The purpose of the invention is to provide the possibility of bending products of various sizes.

This goal is achieved by the fact that in the device for bending lengthy products containing a slide on a frame with a forming mandrel and bending elements installed on one of the ends of the two shoulders and connected with a copier interacting with the copy rollers are installed on the free ends. two shoulders, and the copier is on a slider and is connected with it with the possibility of axial adjustment of 5 movement.

The levers are connected to each other with a spring.

The device is equipped with a pusher mounted on the slider.

thirty

Claims (3)

FIG. 1 shows the proposed device; in fig. 2 - the same, the moment are flexible; in fig. 3 is a section A-A in FIG. 1. The device for bending contains one hundred, mounted on a bed 2, with supporting plates fixed to it by means of 3 brackets; pivotally connected to two shoulders levers 5, at one end of which are Bending rollers 6, on the other - copying rollers 7. In the guides 8 of the table I there is a movable slide G. on which the forming mandrel 10 is fixed, axially adjustable copier 11, ejector 12 finished products. The spring 13 secured to the ends of the arms 5 presses the copy rollers 7 to the copier II and connects the levers to each other. In the lower part of the frame 2 there is a power cylinder 14 with a rod, which provides movement of the slider 9 by means of the bracket 15. In addition, the device has a mechanism 16 for flattening the workpiece mounted on the standard bracket 17 on which the limit switch 18 is mounted. the device for breakage is provided with a hard stop 19. The screws 20 connecting the slider 9 with the cam 11 are mounted so as to move along the slots of the latter. In order to readjust the copier 11 to the required size of the workpiece 21, the lower surface of the copier and the upper part of the slider are provided with a serrated notch. The device works as follows. The workpiece 21 is installed in the alignment mechanism 16, where it automatically becomes symmetrically with respect to the forming mandrel 10, and the plates 3 protect it from deflection. The bending operation is started by turning on the cylinder 1, which moves the slider 9 with the forming mandrel 10 along the table guide between the bending rollers 6, to produce the product bending. At the same time, the copier rollers 7 are cut along the curvilinear surface of the copier 11, pressed against it by the spring 13 and ensure the normal movement of the bending rollers 6. At the end of the bend, the copier rollers 7 are on the ledge of the copier 11 and the ends of the levers are separated. with bending rollers 7.4 6, they converge and bend the ends of the product, ensuring their necessary parallelism. When returning the slider 9 to its original position from the command of the limit switch 18, the ejector 12 pushes the finished product out of the bending zone. The adjustment of the device to the new standard size of the workpiece and the determination of the places for its hemming is made by shifting the copier 11 of the relative slider 9 along the triangular toothed notch. In this case, the molding mandrel 10 and the bending rollers may be replaceable. The application of the proposed invention will reduce the production area and free up technological equipment due to the changeover of the device to a new type model (ier, as well as by facilitating the removal of the finished product from the forming mandrel. The expected economic effect from using the invention on the enterprises of the industry will be 8-10 thousand RUB. Claim 1. Device for bending lengthy products, sticking installed on the frame slide with a forming mandrel and bending elements mounted each on one At the ends of the two shoulders and associated with a cam that interacts with the pulleys, characterized in that, in order to allow the bending of products of various sizes, the pulleys are mounted on the free ends of the two shoulders, and the copier on the slider and associated with it axial adjustment movement. 2. A device according to claim 1, characterized in that the levers are interconnected by a spring. ; 3. A device as claimed in claims 1 and 2, characterized in that it is provided with an ejector mounted on a slider. Sources of information taken into account during the examination 1. USSR Author's Certificate No., cl. B 21 F 5 / 26,23.05.77.