SU1637900A1 - Machine for crimping edges of sheet material - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to devices for bending the edges of the sheet material. The purpose of the invention is the expansion of technological capabilities by providing bending with a reduced bend radius. The device contains a three-link frame, the extreme links of which are placed in parallel planes and carry two support and one pressure rollers (P). The middle link has a handle and a coupling connected to one extreme link. P are made of composite disks of equal diameter to obtain a right angle and different for an acute angle. First, with one support and pressure P, the end portion is bent. Then, turning the device, bend along the whole bending line. The device allows the edges of the material to be bent along any path. 1 hp f-ly, 4 ill.

Description

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The invention relates to the processing of metals by pressure, in particular to hand-held devices for bending the edges of the sheet material.

The purpose of the invention is to expand technological capabilities by providing bending with a reduced bend radius.

Figure 1 shows the device before bending the end portion of the edge of the workpiece; figure 2 - the same, after bending; fig. 3 - the same, after the end, the edges are flexible; figure 4 - view And fig.Z.

The device comprises a frame consisting of links 1-3, each of which is made of two shoulders placed at a right angle. The middle link has a handle 4 and is connected with an extreme link T of clutch 5. Extreme link 3 is located in a plane parallel to the plane of link 1 at distance I, which is selected in the range

  C D, where D is the diameter of the pressure

a roller 6 fixed to the folded end 7 of the link 3. At the end of the link 1, the support rollers 8 and 9 are mounted. The rollers 6, 8 and 9 are mounted for free rotation. The rollers 8 and 9 are made from sets of disks of equal diameters for bending at right angles and different diameters for bending at an acute angle. In the latter case, the disks with the maximum diameter are placed on the side of the pressure roller 6. The roller 6 has a bending edge and chamfers on both sides.

The device works as follows.

The worker goes to the corner of the sheet from the side opposite to the direction of movement of the device during bending and tucks the edge to be bend into an inverted device (Fig. 1). Rotate the entire device

about with

vj W) About About

around the sheet (Fig. 2), it bends the end portion between the pressure roller b and the support roller 8. The device is then withdrawn and rotated to the starting position for bending. The worker goes to the other side and, setting the curved section between the rollers 6, 8 and 9, begins the main bending, moving the device along the edge of the sheet.

The use of the device increases labor productivity in bending operations by 78-80%, 2.5 times reduces the duration of work, allows to bend the edge of the material along almost any trajectory due to the high maneuverability of the device.

Claims (2)

1. Device for bending the edges of the sheet material, comprising a composite frame with two supporting and one clamping rollers I 2 Fm.1 0 five Kami installed with the possibility of free rotation, characterized in that, in order to expand technological capabilities by providing bending with a reduced bend radius, the frame is made of three sequentially and rigidly connected links, each of which has two shoulders placed at a right angle, the extreme links are placed in parallel planes and one of them is made with the end bent at an angle of 45 ° to the shoulders of the extreme links, the pressure roller is placed at the bent end of the mentioned link, the support rollers at the ends of the pl h other extreme care in mutually perpendicular planes, and the middle tier holds the handle. 2. Device pop. 1, which differs from 20 in that each support roller is made of disks with diameters increasing towards the pressure roller. Fy.g 9 FIG. five diE A