DE202012011623U1 - Processing module for a screen and braiding separator - Google Patents

Abstract

Processing module for a wire mesh separating device, comprising: - at least one separating element, - a drive, which is connected to the separating element, so that the separating element is movable, - a positive guide, in which the separating element is guided and which is designed such that the Separating element is movable in a further direction, - an element for changing the position of the braid, characterized in that the separating element (310) is a tube which is formed at its one end as a circular blade with a flat blade (315) parallel to Line (600) is driven and positively controlled performs a linear and a radial movement, which causes a change in position of the braid, and by a rotary drive (300) performs an additional radial movement.

Description

Field of the invention

The present invention relates to a processing module for a screen and braid separating device comprising at least one separator with a circular, one-piece cutting edge, a member for changing the position of the braid, a linear drive, which is connected to the separating element, so that the separating element is movable toward a braid to be separated, an abutment against which the separating element moves, a positive control, which puts the separating element after the linear movement in a first small rotational movement, and a rotary member which is also connected to the separating element, so that the separating element is movable in a further rotary direction. Furthermore, the invention relates to a method for operating such a processing module and to a cable processing machine with such a processing module for the cutting of braids.

Background and state of the art

Separators are used to isolate shields, particularly electrical or fiber optic cables and coaxial construction lines. The pruning of the braid is required, for example, because the contacts to be attached to the lead require a certain length of exposed braid.

There are several ways to separate shields or braids. In the processing module described here is of shielding the speech that only on dilated, but not before separation must be unbundled.

For most cables, standard coaxial stripping machines can be used for pruning the braid, for example machines from Feintechnik R. Rittmeyer GmbH. These coaxial machines work with rotating knives, which inter alia cut through the mesh at a preselectable position by means of a radial cut. The underlying insulation layer under the braid serves as a kind of counter bearing against the stripping blades. In some cases, minor injuries to this insulation layer are unavoidable but can be tolerated.

However, there are lines in which any injury to the insulation layer must be reliably avoided because even the slightest injury can lead to a current breakdown between the inner conductor and the braid. This can only be guaranteed if a violation of the insulation layer is physically impossible. This is usually achieved by positioning a tube between braid and insulation layer against which the cutting blades travel.

In commercially available semi or fully automatic coaxial cable stripping machines, this processing step - the insertion of a tube as an abutment - has not yet been integrated. Machinings in which even the slightest damage to the insulation layer has to be avoided are currently being carried out, for example, with small shears at manual workstations, or specific devices or machines are being used.

Working on manual workstations with tools such as small scissors are still common, but very ineffective and not precise. Simple devices are also in use. These are usually in-house aids and not intended for sale.

Semi-automatic machines in use either require an already expanded screen or the machine can also perform this work step.

A processing module for a screen-separating device, for example, in the DE 20 2008 015 570 U1 described. The separator has knives which cut the braid longitudinally and transversely. Furthermore, the device has a protective sleeve, which is pushed under the braid. This ensures that the vertically movable in the direction of the mesh to be processed knives can not violate the underlying layer of the braid.

Furthermore, semi-automatic machines are known which cut through the mesh of coaxial cables or of high-frequency cables injury-free with linearly fed knives. The braid is slightly widened before feeding into the machine and then introduced the thus prepared line into the machine so that the part of the line is inserted below the braid in a sleeve and the braid comes to rest outside the sleeve. Then cutting knife drive with adapted to the mesh cutting diameters linearly against the braid and cut this against the underlying sleeve wall.

A machine was also presented, which should automatically perform the steps of cutting the shield braid, everting the shield braid and inner conductor stripping. This machine is specially designed for processing high-voltage cables and works with rotating knives that sever the mesh against an inserted tube.

Summary of the invention

It is an object of the present invention to improve the known processing machines and devices in such a way that due to the design separation of the insulation layer is not possible that they can be used for a variety of lines with different properties of the braid that they are beneficial both in Both in terms of purchase and operation, the meshes to be processed are reliably cut, the machining speed is comparable to that of semi-automatic machines, the wear of cutting tools is minimized, and the processing is environmentally friendly and safe.

The present invention relates to a wire mesh separating apparatus processing module comprising at least one partition member and a ply change member, a linear actuator connected to the partition member so that the partition member is movable toward a mesh to be processed, an abutment, against which the separating element moves, a positive control, which puts the separating element in a first small rotational movement, a rotary member which is also connected to the separating element, so that the separating element is movable in a further rotational movement. Furthermore, the invention relates to a method for operating such a processing module and to a cable processing machine with such a processing module for the cutting of braids.

This object is achieved by a processing module having at least one separating element and an element for changing the position of the braid, a linear drive which is connected to the separating element, so that the separating element is movable toward a braid to be processed, an abutment against which Separating element moves, a positive control, by means of which the separating element is placed in a first rotary movement, and a rotary member which is also connected to the separating element, so that the separating element carries out a further rotational movement.

Furthermore, the object is achieved in that the separating element moves parallel to the cable and that the separation process itself also takes place parallel to the cable.

It has been found that the displacement of the cutting plane and thus parallel to the cable brings a variety of advantages. So no protective tube between braid and insulation layer must be positioned, which protects the insulation layer against the pressure of separation tools. Due to the laying of the cutting plane parallel to the cable, damage to the insulation layer of the cable is not possible due to the design.

In the presented device, the separating element inserted between the braid and the underlying insulation layer combines the functions of guiding the cable, laying the cutting plane through 90 ° and thus parallel to the line, and separating the braid. As a counter bearing of the separating element is a sleeve through which the cable is supplied simultaneously. This principle of operation and the combination of several functions in a few and simple components ensures that both the costs for production and the susceptibility to faults are reduced.

It should also be emphasized that the presented system works very reliably and reproducibly by combining two movements. The primary movement is a combination of linear and low rotational movement through a correspondingly designed forced control. First, the separator is moved linearly. Only at the end of the linear path, the movement is deflected by the positive control, preferably designed as a cam, in a small rotative.

The positive control is designed so that the slight rotational movement of the separating element takes place only after the end of the linear movement of the separating element. It is also designed so that the rotary movement takes place only when the separator is pressed with a certain adjustable force against the braid. This ensures that the main part of the separation process has already taken place. The cam groove is further adapted to carry out the slight rotational movement within the path determined by the spring travel between a rigid and a spring-loaded abutment plate.

The forced movement by the forced control is such that most known screen and wire meshes are already severed.

However, the braid properties as well as the individual wires that make up the braid are so different that not all braids are safely severed by the linear movement with a slight rotational movement.

It is therefore provided a more extensive rotational movement, which is only effective when a first linear path with low rotational movement was covered or when a variably adjustable pressure was reached. The further rotative movement cuts through last fine wires, which were not severed solely by the first, primarily linear motion. The total rotational movement is limited to a value that is below 360 °.

The further rotary movement is preferably carried out by means of an additional manual intervention to be performed. It can also be automated in a further embodiment by an attached motor.

Another particularly preferred embodiment of the device provides for the use of a separating element whose cutting edge is not sharp-edged, but flat. Thus, the severing of the braid is comparable to the working principle of side cutters. It is thus on the one hand ensures that the separation function does not depend on an exact cutting geometry, on the other hand, the wear and depending on the costs of tools are reduced.

Another particular advantage of the device is that the cutting edge of the separating element is arranged radially and continuously and thus only a single cutting edge is required. All other known systems require at least two mechanically separate cutting elements, regardless of whether a rotary or linear movement of the cutting elements is performed. This means that at least two mechanisms must be provided, which provide for the supply of the separating elements to the braid. Furthermore, the working principle of at least two separating elements requires that they must be coordinated with each other in their movements. This requires further increased mechanical complexity and thus further costs.

The compact design with a reduced number of mechanical elements reduces the manufacturing costs and the susceptibility of the machining module.

The device can be operated both as a manual version and as a module in an automatic machine.

In a first variant of the preferred embodiment as a manual version, all process-relevant components are easily and safely accessible. This provides significant benefits in terms of process safety, control and speed of operation.

Process reliability and control are given by the fact that no functions must be driven by a motor, because all movements can be done manually, that there is virtually no noise pollution, that the work area is completely visible by the operator and that any necessary corrections can be made immediately without consuming Dismantling of components.

The working speed is very high, because the sleeve in which the cable is inserted, at the same time serves as a cutting element and thus no further functional mechanisms must be supplied, and because the cutting process in insulation displacement technology is faster than cutting by means of rotating blades.

In a second variant of this preferred embodiment, the screen and mesh separation device can be used as a module in an automatically operating machine.

Brief description of the figures

The present invention will be explained in more detail with reference to a preferred embodiment. To show schematically

1 a schematic diagram as a partial sectional view of a first embodiment of the processing module in the state before the separation process;

2 Section through the separator and through the spring-loaded sleeve;

3 Basic structure of a stripped coaxial cable;

4 Section through the separating element

5 Schematic diagram abutment plate with abutment sleeve

Detailed description of the invention

In the 1 is a sketch of a first embodiment of a processing module 100 for a screen and braid separator partially shown in section.

The processing module has an abutment sleeve 230 on, which is designed as a tube and at the same time as a supply of an already line 600 serves, from the previously already the outer insulation 620 was removed.

The working space between abutment sleeve 230 and sleeve 320 and separating element 210 is designed so that a hand of the operator has easy access and the wire mesh 610 the line 600 something can spread before the line in the sleeve 320 is pushed. This will be sleeve 320 and separating element 310 between wire mesh 610 and insulation layer 630 positioned.

The supply of the line 600 is limited by the position of the adjustable stop 330 ,

By actuating the linear drive 500 be sleeve 320 and separating element 310 continue under the wire mesh 610 proceed to the abutment sleeve 230 ,

The separating element 310 is a tube whose one end is a circular knife with a flat edge 315 is trained.

Inside the separator 310 is a sleeve 320 arranged spring-loaded. The sleeve 320 causes, especially in close-meshed and rigid braids 610 the separating element 310 easier between braid 610 and insulation layer 630 can be introduced.

Furthermore, the spring-loaded sleeve is used 320 to that, the braid 610 against the abutment sleeve 230 to position before the separator contacts, and thus a clean cutting of the mesh 610 to ensure.

The abutment sleeve 230 is adjustable and preferably with a thread 235 provided and thus adjustable in position within the abutment plate II. Thus, the distance of the end face abutment sleeve 236 to the separating element 310 and to the control groove radius 415 variable.

The abutment plate II 210 is against the abutment plate I 200 by means of springs 220 movably mounted. The spring force of the springs 220 is higher than the spring force of the sleeve suspension 340 ,

Be by means of the linear drive 500 the sleeve 320 and the separator 310 against the face abutment sleeve 236 pressed, produces the sleeve 320 a bias on the wire mesh 610 against the face abutment sleeve 236 , If this preload is greater than the sleeve spring, the sleeve 320 inside the separator 310 moved backwards until the separating element 310 Contact has to the wire mesh 610 and to the face abutment sleeve 236 ,

The separating element 236 is rigidly mounted and generated by increasing the linear drive 500 increased pressure against the wire mesh 610 , If the pressure is further increased, this acts against the spring force of the springs 220 , Due to the effect of the spring force is a uniform pressure of the separating element 310 against the face abutment sleeve 236 guaranteed.

The positive control defines the travel path of the separating element and is in the example shown as a control groove 410 with control groove radius 415 executed.

Shortly before the end of the travel of the separating element 310 against the wire mesh 610 The linear motion is controlled by the radius control groove 415 changed into a slight rotational movement. The maximum degree of rotational movement is such that it is within the spring travel of the springs 220 is done.

After the spring travel of the springs 220 the pressure force of the linear drive acts 500 completely against the rigid abutment plate I 200 , The pressure force is due to the changeable position of the linear drive 500 and thus that of the separating element 310 to the face abutment sleeve 236 certainly.

Due to the linear and the immediately afterwards positively controlled small rotary movement of the separating element 310 against the wire mesh 610 The wire meshes of most of the cables on the market are severed. For some braids, however, an additional rotary movement is required.

This is achieved by the rotary drive 300 and in the preferred embodiment by actuation of the lever located thereon 350 ,

After the complete cutting of the wire mesh 610 is the separating element by return stroke of the linear drive 500 returned to its original position. This is the separated part of the wire mesh 610 manually from the separator 310 and the sleeve 320 stripped.

LIST OF REFERENCE NUMBERS

100

processing module

200

Abutment plate I

210

Abutment plate II

220

feathers

230

Abutment sleeve

235

Thread abutment sleeve

236

Face abutment sleeve

300

rotary drive

310

separating element

315

circular knife with a flat edge

320

shell

330

attack

340

sleeve suspension

350

lever

400

guide block

410

control groove

415

Steering groove radius

500

linear actuator

600

management

610

wire mesh

620

external insulation

630

insulation layer

640

inner conductor

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202008015570 U1 [0009]

Claims (6)

Processing module for a wire mesh separating device, comprising: - at least one separating element, - a drive which is connected to the separating element, so that the separating element is movable, - a positive guide in which the separating element is guided and which is designed such that the Separating element is movable in a further direction, - an element for changing the position of the braid, characterized in that the separating element ( 310 ) is a tube, which at its one end as a circular knife with a flat blade ( 315 ) is formed parallel to the line ( 600 ) and positively driven performs a linear and a radial movement, which causes a change in position of the braid, and by a rotary drive ( 300 ) performs an additional radial movement. Machining module according to claim 1, characterized in that in the separating element ( 310 ) a sleeve ( 320 ) provided by spring elements ( 340 ) is resiliently mounted and additionally causes a change in position of the braid. Machining module according to claim 1 or 2, characterized in that a manual intervention in the working area of the device ( 100 ) is possible at any time without risk. Machining module according to claims 1 to 3, characterized in that the abutment sleeve ( 230 ) connected to the abutment plate II and by a thread ( 235 ) is changeable in their distance from the separating element. Machining module according to one of claims 1 to 4, characterized in that the abutment plate II ( 210 ) against the abutment plate I ( 200 ) is spring-mounted. Machining module according to one of claims 1 to 5, characterized in that the stop ( 330 ) is adjustably mounted.

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