SU997930A1 - Machine for making wire products - Google Patents

Description

one

The invention relates to the manufacture of wire products by bending it.

A known machine for the manufacture of wire products of complex shape, containing mechanisms mounted on a frame for intermittent feeding, cutting and bending of wire 1.

The disadvantage of this machine is the need to readjust to another size of parts.

The closest in technical essence to the present invention is a machine for manufacturing wire products, which contains an intermittent wire feed mechanism mounted on a frame, a bending mechanism with a bending tool and a cutting mechanism 2).

The disadvantage of the known machine is the need to readjust to another size of parts. This is because the details differ from each other in both the lengths and the diameters of the wires. Therefore, in the manufacture of another part, it is necessary to tune the mechanism for intermittent feeding, replace the sleeves having a longitudinal hole for the passage of the wire and adjust the bending tool.

The aim of the invention is to expand the technological capabilities of the machine. The goal is achieved by the fact that

5 in the machine for manufacturing wire products, which contains an intermittent wire feed mechanism, a bending mechanism with a bending tool and a cutting mechanism mounted on the bed, the intermittent feed mechanism is designed as a feed roller with working protrusions of different lengths and pressure rollers placed on the drive shaft, and the cutting mechanism consists of a block of fixed knives mounted in a bed opposite

15 each pair of feed and pressure rollers, and a movable knife mounted on a bending tool.

In order to simplify the machine design, the bending mechanism consists of a cutting cam with working lugs placed on one shaft with feed rollers and placed in guides of the bending slide with a bending tool and hinged on the two-arm lever with rollers that interact with one shoulder with a profile cam and the other with a bending slider, while the working protrusions of the feed rollers are in antiphase with the working protrusions of the profile cam, and the bending slider has a window placed nd between the bending and cutting tool, the height of which is greater than the length of the end of the folded article.

FIG. 1 shows the machine, a general view (the moment of wire feeding); in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 1, in FIG. 4 - machine, general view (the moment of the beginning of cutting the product);

The machine for the manufacture of bent-end wire products consists of a mechanism for intermittent wire feeding, made in the form of a set of leading 1 and pressure rollers 2, a bending and cutting mechanism that includes a bending slide 3, springs 4, guides 5 in which the sleeves are attached 6 s longitudinal holes for passing the wire, located opposite each pinch and drive rollers. The bending slider 3, having a window whose height is greater than the length of the bent end of the product, is kinematically associated with a mechanism for intermittent feeding of the rotary layer by a swinging two arm 7 through a rotating pro / (cam 8, mounted on one shaft with driving rollers 1 whose working surfaces The cam 8 is set so that its working protrusions do not coincide in phase with the working protrusions of the drive rollers 1. The pressure rollers 2 are spring-loaded. To eliminate cushioning of the wire 9, a spring clip is installed 10 p.

The machine works as follows.

The straightened wire 9 passes through the latch 10 into the hole formed by the surface of the trough of the driving roller 1 and the rolling surface of the pressure roller 2.

When the drive roller 1 rotates (Fig. 1), its working lugs press the wire 9 against the rolling surface of the pressure roller 2, due to which the wire is fed through the longitudinal hole of the sleeve 6 into the treatment zone. The wire is fed during the entire period of interaction of the working lugs of the driving roller 1 with the pressure roller 2. The pause in the movement of the wire occurs when the hole formed by the surface and the bottom of the driving roller 1 and the rolling surface of the pressure roller 2 is larger than the diameter of the supplied wire. Simultaneously with the termination of the axial movement of the wire, the profiled cam 8 with its working protrusion acts on the swinging double-arm lever 7, which drives the bending slide 3, the latter with surface B

bends the end of the wire and stops with its window opposite the bent end of the wire. After that, the drive roller 1 with its second working protrusion feeds the wire into the treatment zone. At the end of the axial movement of the wire, the profiled cam 8 with its second working projection acts on the swinging double-arm lever 7, which drives the bending slide 3 relative to the guide 5, cutting off the end of the wire, and immediately returns to its original position under the action of the spring 4. After this, the cycle of operation is repeated.

In order to manufacture a different size of part, it is necessary to thread the wire into the appropriate pair of drive and pressure rollers.

The use of the invention will eliminate the changeover of the machine in the manufacture of different sizes of parts, which will reduce the auxiliary time required for changeover, and consequently, will increase the productivity of the machine.

Claims (2)

1. A machine for the manufacture of wire products, comprising an intermittent wire feed mechanism, a bending mechanism with a bending tool, and a cutting mechanism, which are characterized in that, in order to expand technological capabilities, the intermittent feed mechanism is made in the form of feeds placed on the drive shaft of the block rollers with working protrusions of different lengths and pressure rollers, and the cutting mechanism consists of a block of fixed knives fixed in a frame opposite each pair of feed and pressure rollers And the moving blade mounted on the bending tools. 2. The machine according to claim 1, characterized in that in order to simplify the construction, the bending mechanism consists of a profile cam with working lugs placed on the same shaft with the feed rollers and placed in the frame guides of the bending slide with the bending tool and hinged on the frame two shoulders with rollers that interact with one shoulder with a profile cam, and the other with a bending slider, while the working protrusions of the rollers are in antiphase with the working protrusions of the profile cam, and There is a window located between the bending and cutting tools, whose height is greater than the length of the bendable end of the product. Sources of information taken into account in the examination 1. USSR author's certificate number 292724, cl. B 21 F 1/06, 1977. 2. USSR Author's Certificate No. 501820, cl. B 21 F 11/00, 1975. Ф1.Ь