DD222219B1 - DEVICE FOR DISCONNECTING AND FORMING WIRE PIPES AND REPLACING A HEAD - Google Patents

Description

For this 1 page drawings

Field of application of the invention

The invention relates to a device for cutting to length and deformation of pieces of wire and upsetting a head, in particular for the ongoing production of thin, precisely dimensioned leads for electronic components.

Characteristic of the known technical solutions

For the deformation of pieces of wire, various devices are known. In these, the wire is introduced in the desired length by a clamping device or by transport rollers in the multi-part processing device continuously.

The wire is held in each case by jamming, z. B. first a head upset and then cut to length.

This procedure is used in DE-OS 3236984 "Apparatus for the continuous production of head wires" according to Fig. 1. In Fig. 2-7 the swaging of a head and the adjustment of the length of the wire piece is shown, and according to Fig.8 the cutting of the piece of wire represented by a shear blade.

According to DE-AS 2202390 "Machine for the production of wire pins", the wire is introduced into the upsetting device by means of a slotted jaw and upset by an axially movable punch, then the slide is further displaced in the axial direction for the length of the wire piece and the wire piece Cut off and cut off in two planes.

In DE-PS 2436141 a device for the production of upset pieces of wire can be found. With this, the wire is cut as shown in FIG. 2 to the length of the wire pieces. These pieces of wire are passed into a channel according to FIG. 3 b and transferred from this into the compression device according to FIG. 3 a. From the channel, the pieces of wire are transferred in an auxiliary device in the rotatable multi-compression device, upset and then ejected.

In the case of the abovementioned compression devices, the cutting is carried out to length outside the compression die.

As a result, a great effort for the device is required, and the accuracy, especially the length is reduced. The cutting is done with single or double sided beveled knives, whereby the cut surface is not burr-free and the accuracy of the length is further reduced.

Unsatisfactory is the time required for the production of the wire pieces, especially in large quantities. In addition, no device can simultaneously perform multiple different deformations with any device.

Object of the invention

The aim of the invention is to make the production of different shaped wire pieces with high accuracy economically.

Explanation of the essence of the invention

The invention has for its object to provide a device by means of which, in particular thin pieces of wire with different deformations in one operation deformed to size and then cut off. According to the invention this object is achieved in that in an apparatus for cutting and deformation of pieces of wire and for upsetting a head between a equipped with cutting book halves clamping device to an upsetting an axially split clamp body is arranged and each half of the clamp body stuffer punch side a crimp and klemmeinrichtungsseitig has a cutting blade while centrally a resilient guide body is arranged. The closed clamping body is displaceable by at least one wire thickness perpendicular to the wire axis. With such a device, the production of large quantities of differently shaped pieces of wire, even if they are made of thin wire, economically possible. In this case, a high dimensional accuracy is achieved because the desired deformations, e.g. one or more upsetting, squeezing or bending can be carried out in one operation.

The device is applicable to any type of wire profiles. The cut surfaces are angled, burr-free and remain, because the useful length is fully supported in the axially split clamp body when editing the wire, absolutely straight. It is also essential that the wire is guided by the pressure-loaded, angled to the axis movable auxiliary guide body in the axially split clamp body, in the open state, through the stroke limiter on the center of the axle. The wire feed is favored when each guide body has chamfers and stroke limits.

embodiment

The invention will be explained in more detail below using an exemplary embodiment. It shows:

Fig. 1: The top view of a schematic representation of a device with inserted wire in section

Fig. 2: the same illustration with clamped wire and carried out deformation processes

Fig. 3: the same view, but after the separation of the deformed piece of wire

4: the same representation, however, in the ejection position of the deformed wire.

According to Fig. 1, the device consists of a two-part wire feed device (1), a split clamping device (2), each with a cutting bush half (3), an axially split clamping body (4), wherein each part with a cutting blade (5) and a crimping body (6) is firmly connected. In the open, axially split clamp body (4) in each half stroke-limited, movable in the axial direction auxiliary guide body (7), each with a wire insertion slope (8), each of a spring

(9) pressure loaded in the designated guide used. Furthermore, an axially displaceable compression punch (10) is arranged.

The wire (11) is brought to the wire feed device (1) in the deformation position. In this case, the auxiliary guide body (7), which are up to the four stroke limits (12) guided by the spring (9) to each other, the wire (11) held axially, so that it is placed between the crimping body (6) securely in the deformation position.

According to Fig. 2, the axially split clamping body (4) is closed, wherein the auxiliary guide body (7) are lifted from the Hubbegrenzung (12) and the wire (11) is held in full length in the axially split clamping device (4). The axially effective upset punch (10) is placed in compression position, and the deformation of a head (13) is done.

When closing the axially split clamping body (4), the pinching on the wire (11) behind the head (13) is carried out by the crimping body (6). The opened wire feed device (1) is returned in the direction of feed position.

According to Fig. 3, the upsetting punch (10) is returned to Ausgangsposositron. The wire (11) is separated from the continuously fed wire (11) by displacement at an angle to the axis of the axially split clamping body (4) with the aid of the lower cutting bush half (3).

In Fig. 4, the feed device (1) is finally brought to the feed position, and the axially split clamping body (4) is opened, so that the differently deformed wire piece (14) falls out with or without auxiliary device.

Claims (2)

Invention claim: 1. An apparatus for cutting to length and deformation of pieces of wire and upsetting a head, in which between an equipped with cutting bushing halves clamping device and an upsetting an axially split clamping body is arranged, characterized in that each half of the clamping body (4) upsetting punch side a crimping body (6) and has a cutting blade (5), while the center is a resilient guide body (7) is arranged, wherein the closed clamping body (4) is displaceable by at least one wire thickness perpendicular to the wire axis. 2. Device according to item 1, characterized in that the guide body (7) insertion bevels (8) and Hubbegrenzungen (12).