MXPA06006869A - Improved crimping unit for joining electric cable metallic terminals, and joining device - Google Patents

Abstract

Described herein is an improved crimping device for joining electric cable metallic terminals, which is characterised in that it comprises a supporting body (12) for supporting blade elements (4,5) adapted to a press (9), which is arranged in a shank (13), said shank being centrally fixed with respect to the body (12). The crimping unit includes a screw body (10) adapted to cooperate with the press (9) that is located at a first side thereof, and a threaded screw nut (11) that is located at a second side portion thereof. With respect to the joining systems of the present invention, the crimping unit allows the position of the blade elements to be continuously and micrometrically adjusted regarding the metallic terminal, the crimping unit being adjusted to the predetermined interval of the joining device, the press operating directly in the shank, which slideably supports the crimping unit.

Description

IMPROVED HAMMER OF ENGARCE FOR CRUSHING METAL TERMINALS IN ELECTRIC CABLES AND CRIMPING DEVICE FOR THE SAME Field and Background of the Invention The present invention relates to an improved crimp hammer, which is to be used in crimping devices for crimping metal terminals into electrical cables. The invention also relates to a crimping device that includes the improved crimping hammer of the invention. More specifically, the field of the invention is that of the systems used to crimp metal terminals respectively in a copper conduit and in an outer insulating material of electric cables. The aforementioned systems conventionally comprise a crimp hammer, that is, a blade element supporting a slide, which is designed to selectively hold the metal terminal, respectively in the copper conductor and the insulating material of the cable. For this purpose, the weight of the blade elements with respect to the position of the metal terminal is adjusted by suitable adjusting devices, which are designed to raise and lower the crimp or sliding hammer, by causing it to slide along of a vertical spike arranged centrally with respect to the hammer. In a case in which the crimp hammer is operated or actuated by a press arranged in the central spigot, the adjustment devices mentioned above usually comprise adjustment collars, which cooperate with the spigot at a level of facing surfaces of different height. , as provided in the caps. In this way, the height of the blade elements of the crimp hammer with respect to the metal terminal is adjusted by the corresponding height of the facing surface, which is itself selected to rotate the bushings. This previous approach, however, has the disadvantage that it does not allow the selected height to be adjusted in a gradual and micrometric manner, due to the discontinuity of position of the blade elements which is a direct consequence of a corresponding discontinuity in the size of the surfaces faced. to the caps.

Brief Description of the Invention Accordingly, the main object of the present invention is to provide a new crimp hammer to be applied in crimping devices for crimping electrical terminals into electrical cables, of a type adapted to cooperate with a press operating in a central pin to allow the crimp hammer to slide and which, in addition, allows easy and rapid adjustment of the position of the blade elements in a continuous and micrometric manner. The object mentioned above, as well as still other objects, are achieved by the crimp hammer and the crimping device as claimed respectively in the appended claims 1-11. Other preferred embodiments of the invention are defined in the remaining claims. With respect to the above systems, as described above, the inventive crimp hammer allows the position of the blade elements with respect to the metal terminal to be adjusted in a continuous and micrometric manner. While it is adapted to be used in that variety of crimp devices in which the press operates directly on the crimp hammer that slidably supports the spike.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, advantages and features mentioned above, of the invention will become more apparent hereinafter from the following detailed description of a preferred, though not exclusive, embodiment of the hammer and crimping device. , which is shown, by way of example, but not limiting example, in the attached figures, wherein: Figure 1 shows, by a mounted view, the crimping device according to the invention; Figure 2 is a perspective view showing the crimp hammer that is included in the device shown in Figure 1; Figure 3 is a sectional view showing the crimp hammer of Figure 2; Figures 4 to 6 show a possible mode of operation of the crimp hammer of the previous figures.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The crimping device according to the invention has been indicated in general by the reference number 1 in figure 1. This crimping device comprises, in particular, a supporting body 2 for supporting a crimp hammer , or slide 3.

The crimp or sliding hammer 3, in turn, comprises blade elements 4 and 5, respectively for crimping the copper conductor and other insulating material (not shown) of the electric cable. As shown in Figure 2, the crimp hammer 3 comprises a butt-connection pin 6, for abutting against it the blade element 4 provided by the copper conductor, and a bush 7 which is mounted rotatably in a respective pivot pin 21 and including a facing surface 8 having a plurality of small surfaces of different height, against which the blade element 5 can be butted to engage the insulating material. In the rear portion of the crimp or slide 3, that is, that portion of the crimp hammer subjected to the press 9, a screw body is provided, designed to cooperate with a screw 11 or outer ring nut. The connection of the ring screw body 11 assembly 10 to the crimp or sliding hammer 3 is made through a threaded pin 13, designed for coupling in a corresponding seat 14 of the body 12 of the crimp hammer, in a central position of it. This threaded pin 13, in particular, slidably supports a contoured bushing 15 shown in FIG. 3, having flat side surfaces 16, designed to slidely cooperate with the corresponding surfaces 17 of a hole 18 of the screw body 10 which receives the threaded spigot 13. As shown, . the bushing 15 has an integral rod 23 which slidably engages in a respective hole 22 of the ring nut 11, the ring nut which is restricted by the threaded pin 13 which abuts against the shoulder or splice 24 of the ring nut. cap 15. That portion of the bushing stem 23 projecting outwardly from the ring nut 11 engages in the seat 14 of the body 12 of the crimp hammer 3, which already receives the said threaded pin 13. The connection made in this way does not allow the bushing 15 to rotate, therefore the ring body 10 can not rotate with respect to the crimp hammer 3, due to the coupling of the flat surfaces 16 of the bushing 15 and the corresponding flat surfaces 25 of the bushing 15. pressure seat 14 (figure 3). In this way, the press 9 arranged in the threaded pin 13 will retain the screw body 10 of the crimp hammer 3 at a set or fixed height, with respect to the metal terminal, while the rotation of the ring nut 11 will cause that the body 12 of the crimp hammer 3 is raised and lowered, thereby raising and lowering correspondingly the blade elements 4 and 5 mentioned above with respect to the crimping position of the metal terminal. The operation of the crimping system described is best shown in Figures 4 and 6. In a starting position, shown in Figure 4, which corresponds to the position of the crimping plane 19 of the metal terminal, the press 9 will retain the body 10 of the ring in a fully engaged or screwed position within the seat or pressure 20 of the threaded ring nut 11. In this position of the screw body 10 and the ring nut 11, the blade elements 4 and 5 will be arranged at a height a = = b = x with respect to the crimping plane 19. Starting from this position, and when turning the nut 11 of the ring in the direction of the arrow Fl in FIG. 5, the body 12 of the crimp hammer 3 will be lowered, thus also lowering the blade elements 4 and 5 in the direction of the arrow F2. This movement is ensured in particular by a counter-deflection action provided by the press 9 in the screw body 10 of the crimp hammer 3. In this position, the height of the blade elements with respect to the crimping plane 19 will correspond to the value c = d = x - y, where y is the measurement or value of the stroke of the ring nut 11 above the screw body 10 ( figure 5). In this way, the height C for the copper knife element 4 will be adjusted. Then, by causing the bushing 7 to rotate about its support pivot pin 21 (see arrows F3, F4 of Figure 6), the blade elements 5 of the insulating material will either lower or lift (arrows F5, F6) , adjusted in this way respectively the height of the blade element 5 with respect to the said fastening plane 19. In this regard, it should be evident that the continuous adjustment allowed by the connection threaded by the screw body 10 and the ring nut 11 will provide a corresponding continuous adjustment of the position of the two elements 4 and 5 of the blade with respect to the crimping plane 19. The system will also comprise a display means (not shown) to indicate the value of the amount of the adjustment made, ie, a measurement of rotational movement of the nut 11 de-ring with respect to the body of screw.

Claims (11)

1. CLAIMS 1. Crimping screw, or slide, for a crimp device for crimping metal terminals into electric cables, the type comprising a support body that supports respective blade elements, and adapted to cooperate with a press arranged on a fastener element. spigot, the tang element that is arranged and placed in a central position with respect to the body, characterized in that the crimp hammer comprises an adjustment means adapted to provide a continuous and micrometric adjustment of the blade elements with respect to the plane of crimping 2. Crimping hammer according to the claim 1, characterized in that the adjustment means comprises a screw body adapted to cooperate, on one side thereof with the press and, on an opposite side thereof, with a corresponding threaded ring nut. 3. Crimping hammer according to the claim 2, characterized in that the crimp hammer further comprises a central bushing for slidably coupling the ring nut with respect to the screw body. 4. Crimping hammer according to the claim 3, characterized in that the cap comprises flat coupling surfaces for coupling, in a non-rotating condition, into a corresponding hole of the screw body, the hole comprising corresponding flat surfaces adapted to be slidably coupled with corresponding surfaces of the cap. 5. Crimp cap according to the claim 4, characterized in that the bushing comprises a bushing rod for slidably coupling a corresponding hole in the ring nut. 6. Crimping hammer according to the claim 5, characterized in that the bushing comprises a butt coupling shoulder to buttly engage the bushing and the ring nut. 7. Crimping hammer according to claim 6, characterized in that the crimp hammer comprises a coupling seat for coupling the dowel in the body of the crimp hammer, the seat having flat surfaces adapted to cooperate, in a non-rotating condition, on the corresponding flat surfaces of the bushing. Crimping hammer according to claim 2, characterized in that the ring nut comprises a threaded seat for a slidable coupling with the screw body. Crimping hammer according to claim 1, characterized in that the crimp hammer comprises a butt connection pin for butting the blade element against the latter, and a butt joint bushing for abutting the element against it. of blade. 10. Crimping hammer according to the claim 9, characterized in that the bushing is mounted rotatably on a pin to the corresponding pivot and comprises a plurality of facing portions having mutually different heights. 11. Crimping device for crimping metal terminals on electric cables, characterized in that the crimping device comprises a crimp hammer according to one or more of the preceding claims.