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KR-102961978-B1 - Method for removing cable thin film

KR102961978B1KR 102961978 B1KR102961978 B1KR 102961978B1KR-102961978-B1

Abstract

In order to achieve a simple, certain, and rapid removal of a section (6a) of a cable film (6) to be removed for end sections (1b) of cables (1) having different diameters, without the cable jacket (7) within the area to be preferably processed needing to be removed, according to the present invention, the following steps are provided: - a step of providing an end section (1b) of a cable (1) comprising a cable axis (2), wherein the cable (1) comprises a cable jacket (7) and one or more electrically conductive conductor structures (3, 4), and a cable film (6) made of plastic that is superimposed on one of the conductor structures (3, 4); and - a step of creating a defined damage area (S) in which the cable film (6) superimposed on the conductor structure (3, 4) is at least partially thermally damaged within the damage area (S) by induction heating of the conductor structure (3, 4) on which the cable film (6) is superimposed. A method is proposed comprising the step of moving a cable film (6) relative to one of the conductor structures (3, 4), wherein, through relative movement, a crack is formed within a damaged area (S) to separate the section (6a) of the cable film (6) to be removed from the section (6b) of the cable film (6) that remains on the cable (1).

Inventors

  • 레벨 다니엘
  • 발커 베른하르트
  • 만하르트 야콥
  • 하버만 에리히
  • 파이트 슈테판
  • 베버 아르투어
  • 레노어만트 티바우트

Assignees

  • 게바우어 운트 그릴러 카벨베르케 게에에스엠베하

Dates

Publication Date
20260508
Application Date
20201105
Priority Date
20191108

Claims (20)

  1. A method for removing a section (6a) of cable film (6) to be removed from an end section (1b) of cable (1), - A step of providing an end section (1b) of a cable (1) including a cable axis (2), wherein the cable (1) comprises a cable jacket (7) and one or more electrically conductive conductor structures (3, 4, 5), and a cable film (6) made of plastic that is superimposed on one of the conductor structures (3, 4, 5); - A step of creating a defined damage area (S) within a provided end section (1b) of a cable (1), wherein the cable thin film (6) is inductively heated so that the cable thin film (6) superimposed on the heated conductor structures (3, 4, 5a, 5b) within the damage area (S) is at least partially thermally damaged; wherein the cable thin film (6) is covered by a cable jacket (7) during the inductive heating of one or more conductor structures (3, 4, 5) within the damage area (S); - A cutting step performed during or after the creation of a damaged area (S), at least partially surrounding the periphery of the cable jacket (7), wherein the cutting step is performed at a location positioned closer to the cable end (1a) of the end section (1b) than to the damaged area (S); - A method for removing a cable film, comprising the step of moving the cable film (6) relative to one of the conductor structures (3, 4, 5), wherein, through relative movement, a crack is formed within the cable film (6) to separate the section (6a) of the cable film (6) to be removed from the section (6b) of the cable film (6) remaining on the cable (1) within the damaged area (S), and the crack within the cable film (6) formed through relative movement is formed under the cable jacket (7).
  2. A method for removing a section (6a) of cable film (6) to be removed from an end section (1b) of cable (1), - A step of providing an end section (1b) of a cable (1) including a cable axis (2), wherein the cable (1) comprises a cable jacket (7) and one or more electrically conductive conductor structures (3, 4, 5), and a cable film (6) made of plastic that is superimposed on one of the conductor structures (3, 4, 5); - A step of forming an incision (9) in a provided end section (1b) of the cable (1) through an incision made at least partially surrounding the periphery of the cable jacket (7); - A step of creating a defined damage area (S) within an end section (1b) of a cable (1), wherein, at least, the cable thin film (6) superimposed on the conductor structure (3, 4, 5a, 5b) is inductively heated so that the cable thin film (6) superimposed on the heated conductor structure (3, 4, 5a, 5b) within the damage area (S) is at least partially thermally damaged, wherein the damage area (S) is created after the formation of the cut (9), the distance between the cable end (1a) of the end section (1b) and the damage area (S) is greater than the distance between the cable end (1a) and the cut (9), and the cable thin film (6) is covered by a cable jacket (7) during the inductive heating of one or more conductor structures (3, 4, 5) within the damage area (S); - A method for removing a cable film, comprising the step of moving the cable film (6) relative to one of the conductor structures (3, 4, 5), wherein, through relative movement, a crack is formed within the cable film (6) to separate the section (6a) of the cable film (6) to be removed from the section (6b) of the cable film (6) remaining on the cable (1) within the damaged area (S), and the crack within the cable film (6) formed through relative movement is formed under the cable jacket (7).
  3. A method for removing a cable thin film according to claim 1 or 2, wherein one or more conductor structures (3) are composed of an inner conductor (4) and one or more outer conductor structures (5, 5a, 5b), and a cable thin film (6) is superimposed on one of the outer conductor structures (5, 5a, 5b).
  4. A method for removing a cable thin film, characterized in that, in paragraph 3, the outer conductor structure (5) overlapping the cable thin film (6) is formed as a metal thin film (5b).
  5. A method for removing a cable thin film, characterized in that, in claim 4, the external conductor structure (5) formed as a metal thin film (5b) is structurally weakened through induction heating in a damaged area (S).
  6. A method for removing a cable thin film, characterized in that, in the first or second claim, induction heating is performed by an induction coil (12), that is, an alternating electromagnetic field is generated by the induction coil (12), and at least the damaged area (S) of the cable (1) is arranged inside the induction coil (12) during induction heating.
  7. In paragraph 1 or 2, - A cable jacket (7) is divided into a section to be removed (7a) and a section to be left (7b) of the cable jacket (7) by an incision (9) formed through an incision step performed at least partially surrounding the periphery; the section to be removed (7a) of the cable jacket (7) is moved in the direction of the cable axis (2), and through this movement, the section to be removed (6a) of the cable thin film (6) that is at least partially adhered to the cable jacket (7) is pulled and removed; characterized by a method for removing a cable thin film.
  8. In paragraph 1 or 2, - A step of inductively heating a conductor structure (3, 4, 5a, 5b) overlapping at least a cable thin film (6); - A cutting step performed around at least partially the main part of the cable jacket (7); A method for removing a cable film, characterized by the step of jointly removing a section (7a) of a cable jacket (7) and a section (6a) of a cable film (6) to be removed within a processing chamber (11) of a processing device (10).
  9. A method for removing a cable film according to claim 1 or 2, characterized in that one or more conductor structures (3, 4, 5) overlapping the cable film (6) are inductively heated to a temperature of 80°C or higher.
  10. A processing device (10) for carrying out the method of removing a cable thin film according to paragraph 1 or 2, - A processing chamber (11) for receiving an end section (1b) of a cable (1) to be processed, wherein the cable (1) comprises a cable jacket (7) and one or more electrically conductive conductor structures (3, 4, 5), and a cable film (6) made of plastic that is superimposed on one of the conductor structures (3, 4, 5), and the processing chamber (11) comprises a through opening (16) for the cable (1); - Induction coils (12) arranged within a processing chamber (11); - Means (13) for pulling and removing a section (6a) to be removed defined through a damaged area (S) of a cable film (6); - Includes a cutting unit (14) for cutting that is performed by at least partially surrounding the periphery of the cable jacket (7); and The induction coil (12) is configured to generate an alternating electromagnetic field to inductively heat the conductor structures (3, 4, 5a, 5b) on which the cable film (6) is superimposed, at least in the section of the cable (1) located within the induction coil (12) during the processing process, so that the cable film (6) superimposed on the heated conductor structures (3, 4, 5a, 5b) is at least partially thermally damaged within the damage area (S). A processing device (10) characterized in that a cutting unit (14) is arranged within a processing chamber (11), an induction coil (12) is arranged between the cutting unit (14) and a through opening (16), and the cutting unit (14) is configured to cut the cable jacket (7) at a position closer to the cable end (1a) of the end section (1b) than to the damaged area (S), so that when the section (6a) of the cable film (6) to be removed is pulled, a crack is formed within the cable film (6) in the damaged area (S), and the crack is arranged below the cable jacket (7).
  11. A processing device (10) characterized in that, in item 10, one or more clamping units (15) for fixing the end section (1b) of the cable (1) during the processing process are arranged within the processing chamber (11).
  12. In claim 10, the means (13) for pulling removal of the section (6a) to be removed of the cable film (6) are formed to contact the section (7a) to be removed of the cable jacket (7), defined through the cut portion (9), and to subsequently remove the section (7a) to be removed of the cable jacket (7) together with the section (6a) to be removed of the cable film (6a) by pulling removal motion, characterized by a processing device (10).
  13. A processing device (10) characterized in that, in claim 10, means (13) for removing the pulling of the section (6a) to be removed of the cable film (6) are arranged within a processing chamber (11).
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Description

Method for removing cable thin film The present invention relates to a method for removing a section of a cable film from an end section of a cable, and a processing apparatus for carrying out the method, wherein the cable comprises a cable jacket and one or more electrically conductive conductor structures, and a cable film made of plastic that is superimposed on one of the conductor structures. In this case, the term electrically conductive conductor structure or conductor structure, in light of the subject application, preferably means a metal structure, such a structure is suitable for conducting current, and circulating current or eddy current can be induced within such a structure by an electromagnetic field. Correspondingly, the term conductor structure encompasses not only internal conductors, such as, for example, solid conductors or stranded conductors, but also external conductor structures, such as, for example, conductor braids or electrically conductive thin films, preferably metal thin films. Generally, a cable includes one or more additional insulation layers, particularly when it comprises an inner conductor as an inner conductor structure and one or more outer conductor structures, and the outer insulation layer is called a cable jacket. A cable film made of plastic may be arranged between one of the conductor structures and the insulation layer located thereon, and such a cable film may be used for mechanical protection, electromagnetic shielding, or moisture protection. In particular, in a cable comprising a braided shield as an outer conductor structure and an inner conductor, the cable film may be arranged between the braided shield and the cable jacket to achieve the removal of pull on the cable jacket, because without the cable film, the cable jacket would get caught on the braided shield located underneath it. In order to expose the conductor structure located beneath the cable film so that it can be, for example, made contact, special measures are required (due to the thinness of the cable film compared to the cable jacket, inner conductors, or additional insulation layers), because a simple cut could damage the conductor structure located underneath, particularly the braided shield and/or the insulation layer located specifically beneath the conductor structure. In this regard, the term "end section of the cable" refers to a region of the cable that extends along the cable axis from one end, at least across an area where conductor structures are exposed or will be exposed for contact. Additionally, a stripped section of the cable or a section to be stripped, or a contact section, is also referred to. Generally, the end section includes a section adjacent to the stripped section of the cable, in which the cable jacket is intact, and this section preferably has a length of 1 cm to 25 cm, particularly preferably 5 cm to 15 cm. In this case, the section to be stripped of the cable film generally, preferably, starts at the end of the cable of the end section and extends through a portion of the end section of the cable. EP 3 444 911 A1 discloses a method for removing a cable film, wherein a section of the cable film to be processed is first exposed, and in the area of the provided crack location, such exposed section is subsequently subjected to heat treatment, grinding treatment, or chemical treatment. For heat treatment, a heating wire or a heating forming tool is mentioned that enables the cable film to be partially melted or fused. A disadvantage of the conventional technology is that, on the one hand, the cable jacket must inevitably be partially removed to remove the section of the cable film to be removed. On the other hand, the proposed method requires a complex apparatus that requires rotating the cable for uniform heating or a heatable forming tool specifically matched to the cable to be processed. FIGS. 1a to 1c are drawings illustrating the schematic process of a method according to the present invention using an end section of a first embodiment of a cable. FIGS. 2a to 2c are diagrams illustrating the schematic process of a method according to the present invention using an end section of a second embodiment of a cable. FIGS. 3a to 3c are diagrams illustrating the schematic process of a method according to the present invention using an end section of a third embodiment of a cable. Figure 4 is a drawing showing the end section of a cable within a processing device. Figure 5 is a drawing showing the end section of a cable inside a processing device after induction heating. Figure 6 is a drawing showing the end section of the cable after cutting. Figure 7 is a drawing showing the end section of a cable inside a processing device during pull removal. FIGS. 1a through 1c illustrate the steps of a method according to the present invention in chronological order in an example of a first embodiment of a cable (1). In the first embodiment, the cable (1) comprises a conductor struc