CRIMPING TOOL

Abstract

A crimping tool (1) is used to axially fasten a cable braid (3) of a cable (2) between a crimp sleeve (4) arranged on the cable (2) and a support sleeve (5) by means of crimping. The crimping tool (1) includes a first pressing jaw (6) having a first through-opening (8), which extends in an axial direction (x), and a second pressing jaw (7) having a second through-opening (9), which is coaxial with the first through-opening (8). The first and the second pressing jaw (6, 7) are displaceable relative to each other in the axial direction. For the crimping, the first pressing jaw (6) has a support surface (10) for supporting the crimp sleeve (4) in the axial direction, and the second pressing jaw (7) has a funnel-shaped forming surface (11) arranged around the second through-opening (9), for crimping the crimp sleeve (4) with respect to the support sleeve (5).

Claims

1. A crimping tool (1) for axially fastening a cable braid (3) of a cable (2) between a crimp sleeve (4) arranged on the cable (2) and a support sleeve (5) by crimping, comprising: a. a first pressing jaw (6) having a first through-opening (8) extending in an axial direction (x) for receiving the cable (2) during crimping; and b. a second pressing jaw (7) with a second through-opening (9) arranged in the axial direction, which is arranged coaxially with the first through-opening (8) and serves to receive the cable (2) during crimping; wherein c. the first and second pressing jaws (6, 7) are displaceable relative to each other along the axial direction; d. the first pressing jaw (6) has a support surface (10) for supporting the crimp sleeve in the axial direction; and e. the second pressing jaw (7) includes a funnel-shaped forming surface (11) arranged around the second through-opening (9) for crimping the crimp sleeve (4) with respect to the support sleeve (5).

2. The crimping tool (1) according to claim 1, wherein the funnel-shaped forming surface (11) is arched in the direction of a centre axis of the second through-opening (8).

3. The crimping tool (1) according to claim 1, wherein the second pressing jaw (7) is divisible along a separation plane (12) through the second through-opening (9) into a first jaw part (13) and a second jaw part (14).

4. The crimping tool (1) according to claim 3, wherein the second jaw part (14) can be brought from an open position into a closed position, so that in the open position a cable (2) can be inserted laterally into the second pressing jaw (7).

5. The crimping tool (1) according to claim 4, wherein the second jaw part (14) is fixable in the open position and/or in the closed position to the first jaw part (13) with at least one magnet (16).

6. The crimping tool (1) according to claim 3, wherein the first jaw part (13) and the second jaw part (14) are operatively connected via a joint (15).

7. The crimping tool (1) according to claim 1, wherein the second pressing jaw (7) is displaceable relative to the first pressing jaw (6) from a start position to an end position.

8. The crimping tool (1) according to claim 7, wherein in the end position the second pressing jaw (7) is arranged at least partially in a radial direction in the first pressing jaw (6).

9. The crimping tool (1) according to claim 7, wherein in the end position a first pressing surface (17) of the first pressing jaw (6) rests against a second pressing surface (18) of the second pressing jaw (7).

10. The crimping tool (1) according to claim 9, wherein the first pressing surface (17) surrounds the first through-opening in a ringlike manner (8) and the second pressing surface (18) surrounds the second through-opening (9) in a ringlike manner.

11. The crimping tool (1) according to claim 1, wherein the first and/or the second pressing jaw (6, 7) includes an embossing stamp (27) for applying an embossing to the crimp sleeve (4).

12. The crimping tool (1) according to claim 11, wherein the embossing stamp (27) is arranged on the fowling surface (11).

13. The crimping tool (1) according to claim 11, wherein the embossing stamp (27) is arranged on the second pressing jaw (7) opposite the support surface (10) of the first pressing jaw (6).

14. The crimping tool (1) according to claim 1, wherein the first pressing jaw (6) includes a first pressing insert (19) around the first through-opening (8) and/or the second pressing jaw (7) includes a second pressing insert (20) around the second through-opening (9).

15. The crimping tool (1) according to claim 14, wherein the first pressing insert (19) is held in a first retainer (21) of the first pressing jaw (6) and/or the second pressing insert (20) is held in a second retainer (22) of the second pressing jaw (7) with at least one magnet (16).

16. The crimping tool (1) according to claim 14, wherein the first pressing insert (19) is fixed in the first retainer (21) with at least one spring pressure element (23).

17. The crimping tool (1) according to claim 14, wherein the second pressing insert (20) is dividable into a first and a second half of the insert (24, 25).

Description

BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS

[0020] Aspects of the invention are explained in more detail with reference to the examples of embodiments shown in the following figures and the accompanying description, showing:

[0021] FIG. 1 shows a crimping tool according to the invention in a start position and in a perspective view on a guide rail;

[0022] FIG. 2 shows the crimping tool according to FIG. 1 in the start position in a perspective view with the second pressing jaw open and the cable inserted;

[0023] FIG. 3 shows a crimping tool according to FIG. 2 in an open position and in a perspective view with the second pressing jaw closed;

[0024] FIG. 4 shows a crimping tool according to FIG. 2 in an end position in a perspective view;

[0025] FIG. 5 shows a sectional view of the crimping tool according to FIG. 4 in the end position.

DETAILED DESCRIPTION OF THE INVENTION

[0026] FIG. 1 shows a crimping tool 1 according to the invention mounted on a guide rail 31 of a pressing device. The guide rail respectively the pressing device are not shown in the other figures. FIG. 2 to FIG. 4 show a crimping tool 1 according to the invention in a perspective view. The crimping tool 1 includes a first pressing jaw 6 with a first through-opening 8 and a second pressing jaw 7 with a second through-opening 9. The first and second through-openings 8, 9 are coaxial with each other and extend in an axial direction (x-direction). The through-openings 8, 9 serve to receive a cable 2 during crimping. The second pressing jaw 7 is displaceable relative to the first pressing jaw 6 in an axial direction from a start position to an end position. The start position is shown in FIG. 1, while the end position is shown in FIG. 4.

[0027] The second pressing jaw 7 can be divided into a first jaw part 13 and a second jaw part 14 along a separation plane 12 through the second through-opening 9 for removing the crimped cable 2. The first jaw part 13 serves for the operative connection to the guide rail 31 and/or the pressing device. The second jaw part 14 can be moved from an open position, see FIG. 2, to a closed position, see FIG. 3. In the open position, a cable 2 can be inserted laterally into the second pressing jaw 7. In the closed position, the first jaw part 13 and the second jaw part 14 form the second through-opening 9. For ease of assembly, as shown, the second jaw part 14 may be fixed in the closed position to the first jaw part 13 via at least one magnet 16. Another magnet (not shown) may be used to fix the second jaw member 14 in the open position to the first jaw member 13. The first jaw part 13 and the second jaw part 14 are operatively connected via a joint 15 in the form of a plain bearing bush (only schematically indicated). In the closed position, the second jaw part 14 can additionally be fixed to the first jaw part 13 via a closing mechanism 32. In the case shown, the second jaw part 14 includes a handle which can be inserted into a corresponding recess in the first jaw part 13.

[0028] The first and second pressing jaws 6, 7 each include a pressing insert 19, 20, which is received in a respective retainer 21, 22. The retainers 21, 22 of the pressing jaws 6, 7 each include a receiving opening for receiving the pressing inserts 19, 20. The first pressing insert 19 of the first pressing jaw 6 can be inserted into the first retainer 21, or the receiving opening, from the axial direction until it rests with a front surface 26 in the axial direction. The (first) pressing insert 19 can be held in the receiving opening by means of a radially oriented spring pressure element 23 (see FIG. 5). The second pressing insert 20 can be divided into two insert halves 24, 25. Advantageously, a first half of the insert 24 is arranged in a retainer of the first jaw part 13 and a second half of the insert 25 is arranged in a retainer of the second jaw part 14. In order to mount the two insert halves 24, 25 unmistakably, they can have a marking and/or coding 33. In the case shown, the first and second jaw parts 13, 14 each include a pin which engages in a corresponding recess in the first and second insert halves 24, 25 respectively in the assembled state (see e.g., FIG. 1). The pins, respectively the recesses, are at different circumferential positions in relation to the second through-opening 9. Thus, the second half of the insert 25 cannot be inserted in the first jaw part 13.

[0029] The first and/or the second insert halves 24, 25 can be inserted laterally in the open position of the second pressing jaw 7. The two-part second pressing insert 20 can have a circumferential rim 30 which engages in a corresponding notch of the second retainer 22 and forms an undercut with the latter in the axial direction. In addition, the pressing inserts 19, 20 can each be held by means of at least one magnet 16. Advantageously, several magnets 16 are arranged around the respective through-opening 8, 9 and/or distributed along the front surfaces 26 (as schematically indicated in FIG. 5).

[0030] During the displacement of the pressing jaws, the pressing inserts 19, 20 are pushed into each other. At least one centring segment 28 arranged on the first and/or second pressing insert 19, 20 can serve for a correct alignment of the pressing inserts to each other (see FIG. 5). After centring and in the end position, two ringlike pressing surfaces 17, 18 rest on each other. The end position in a sectional view is shown in FIG. 5. The pressing surfaces 17, 18 are arranged on the first and second pressing jaws 7, 8, respectively on the respective pressing inserts 19, 20. When a maximum contact pressure is reached on the pressing surfaces 17, 18, a desired crimping is achieved and the crimping tool 1, respectively the first and the second pressing jaws 6, 7, can be pushed apart and the crimped cable 2 can be removed. FIG. 5 shows that the first pressing jaw 6, respectively the first pressing insert 19, has a support surface 10 for supporting a crimp sleeve 4 in the axial direction. The second pressing jaw 7, respectively the two-part second pressing insert 20, on the other hand, has a funnel-shaped forming surface 11 arranged around the second through-opening 9 for crimping the cable braid 3 between the crimp sleeve 4 and a support sleeve 5 arranged therein. The funnel-shaped forming surface 11 is arched in the direction of a centre axis 29 of the second through-opening 8. The forming surface 11 advantageously first comes into contact with the crimp sleeve 4 arranged in the first pressing jaw 6 when the pressing jaws 6, 7 are displaced relative to each other. The contact deforms a crimping area of the crimp sleeve 4. The funnel-shaped forming surface 11 causes the crimping area to slide along the forming surface 11 and to wrap around the cable 2 as shown and to wrap around the support sleeve 5 arranged in the crimp sleeve 4. The cable braid 3 is crimped and fixed between the support sleeve 5 and the crimp sleeve 4 during this process. For quality assurance in the sense of traceable crimping, the crimping tool 1 can also include a embossing stamp 27. In the case shown, the embossing stamp 27 is arranged on the second pressing jaw 7, in particular on the second pressing insert 20. The embossing stamp 27 is arranged on the forming surface 11. The embossing stamp 27 is used to apply an embossing, which can, for example, provide information about crimping parameters, manufacturer, etc.