JPH02132786A - Cable conductor jointing compression equipment - Google Patents

Abstract

PURPOSE:To enable the automatic compression joint of a conductor to be made and also to enable the mineralization and light-weightness of the equipment in the title to be achieved, by dividing a holder portion and a compressing hydraulic cylinder respectively into paired units, making a compression with each compressing pin having its head in hemispherical shape, and also providing a holder-detaching and separating mechanism to a holder gripping portion. CONSTITUTION:Compressing holders 11, 11' are parted left and right, and then a cable conductor inserted into a conductor jointing sleeve is inserted into a sleeve insertion opening 17 so that the left and right of the compressing holders 11, 11' are mutually unified. And taper-shaped recessed portions 19, 19' are respectively engaged with and retained on the outer circumferences of the unified taper-shaped projections 18, 18' by the operation of hydraulic cylinders 20, 20'. In this condition, compressing pins 22, 22' are respectively projected by compressing-hydraulic cylinders 12, 12', and then the cable conductor is transformed into a cylindrical shape via the conductor- jointing sleeve for being integrally jointed. In this connection, electricity also is applied to hotting heaters 23, 23' for hotting the conductor-jointing sleeve. Thus, the automatic compression joint of the cable conductor can be made for permitting to achieve the miniaturization and light-weightness of the equipment in the title.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an improved compression device for connecting cable conductors which is capable of automatically compressing and connecting cable conductors inserted into a conductor connecting sleeve and is miniaturized. It is related to.

[Prior Art] An example of a conventional compression device for connecting cable conductors is constructed as shown in FIG. That is, it has a compression hydraulic ram 2 supported at the base of a compression holder 1 formed in a substantially U-shape, and this compression hydraulic ram 2 is supplied with oil at an appropriate pressure from a hydraulic pressure port 6. It is now possible to do so.

Further, a die 5 divided into two parts is provided with a sleeve insertion opening 7 for attaching to the compression holder 1 to compress and connect a conductor connection sleeve (not shown), and a stopper for supporting the die 5 is provided. 3 is fixed to a fixing part 4 made of a tapered screw.

Therefore, the conductor connection sleeve into which the conductor of the cable to be connected is inserted is positioned in the sleeve insertion opening 7, the die 5 is placed, and the compression hydraulic ram 2 on the compression holder 1 is placed.
These are placed on the conductor connection sleeve, and hydraulic pressure is applied between it and a stopper 3 disposed on the opposite side of the compression hydraulic ram 2 to compress the outer periphery of the conductor connection sleeve and connect the conductor connection sleeve.

In this way, a firm compression connection between the conductor connection sleeve and the conductor is achieved.

[Problems to be Solved by the Invention] In the conventional compression device for connecting cable conductors, when the conductor size is small (100 mm2 or less), the sleeve insertion opening of the die 5 becomes smaller because the outer diameter of the sleeve becomes smaller. Since the area of 7 can be increased, for example, the conductors on both sides inserted through the conductor connection sleeve can be compressed and connected at one time.

However, as the conductor size increases, the compression holder 1
Since the hydraulic output is constant, it is necessary to reduce the area of the sleeve insertion opening 7 of the die 5, and therefore it is necessary to repeat the compression operation several times while moving the compression holder 1.

However, if a compression holder 1 with a large hydraulic output is used, the area of the sleeve insertion opening 7 of the die 5 can be increased.
Although the number of times of compression can be reduced, the compression holder 1, die 5, etc. become larger, and the weight becomes larger, making handling work extremely complicated.

Therefore, in order to solve these problems, reduce the size and weight of a compression device for connecting cable conductors, and enable automation, the following problems have been encountered. That is, (a> It is necessary to downsize the compression holder 1 and the die 5, but as a result, the compression hydraulic ram 2 also becomes smaller, and the compression force becomes smaller, causing the sleeve insertion opening 7 of the die 5 to become smaller. Therefore, the area of the sleeve insertion opening 7 of the die 5 becomes uneven on the surface of the compressed conductor connection sleeve due to the increased number of times of compression. It becomes complicated.

(b) The stopper 3 of the compression holder 1 is often screwed in when the hydraulic output is large, and although it is possible to automate this, the overall device shape becomes large and goes against the demand for miniaturization. Put it away.

(C) Since the compression holder 1 is temporarily suspended in order to maintain the mechanical strength of the support portion of the compression hydraulic ram 2 and the stopper 3, it is difficult to divide it into smaller pieces.

Therefore, the purpose of this invention is to solve all of the conventional problems, to provide a compressor for connecting cable conductors that can be incorporated into other manufacturing equipment, that can automatically perform compression connections without using human hands, and that is compact and light in weight. The purpose is to provide equipment.

[Means for Solving the Problems] A compression device for connecting cable conductors according to the present invention is a compression device for compressing and connecting cable conductors inserted into a conductor connection sleeve. An opening for inserting a conductor connection sleeve is formed in the opening, a compression pin connected to the hydraulic cylinder is arranged in a direction perpendicular to the sleeve insertion opening, and a compression pin connected to the hydraulic cylinder is provided in a direction perpendicular to the predetermined axial direction of the splittable surface. a holder portion provided with a tapered protrusion; a stopper having a part or the entire length of the opening for inserting the conductor connection sleeve formed in a tapered shape, and both lengthwise ends directed toward the center; It has a tapered recess formed by fitting and gripping the tapered projection of the part, and a hydraulic cylinder connected to the tapered recess is inserted through a heat insulating material in each direction orthogonal to the predetermined axial direction. A member provided with patterned convex portions on the tip side surfaces of both sides of the hydraulic cylinder connected to the supported and fixed holder gripping portion is inserted between the upper and lower side plates integrated with the debar-shaped recessed portion. and a holder detachment/separation mechanism supporting a guide pin fitted into a slit in which the holder side curved inward provided at the upper part of the side plate, and a heating heater disposed in the holder part. It is characterized by comprising a heating section.

[Function] In the compression device for connecting cable conductors according to the present invention, the holder part is divided in order to reduce the size and weight, and the compression hydraulic cylinder is also divided and miniaturized, so that the decrease in hydraulic output is reduced by reducing the compression area. The pressure per unit area was conversely increased by changing from a large die system to a compression pin system with a hemispherical protrusion at the tip, which has a small area. In addition, the divided holder portion allows the integrally provided wedge-shaped protrusion to be gripped by hydraulic pressure, and the holder to be detached from the holder can be automatically controlled from a distance using a holder detachment/separation mechanism.

[Example] Hereinafter, an example of the present invention will be described in detail using FIGS. 1 to 5.

FIG. 1 is a side view of an example of a compression device for connecting cable conductors, and FIGS. 2 and 3 are front views thereof. In each figure, a compression holder 11.11' for compression connection of a cable conductor inserted into a conductor connection sleeve is separable in a predetermined axial direction (left and right direction) at a dividing surface 26.26, An opening 17 for inserting a conductor connection sleeve is formed in the center of the holder 11.11'.

A compression pin 22.22 connected to the hydraulic cylinder 12.12 is arranged in a direction perpendicular to this sleeve insertion opening 17, and a compression pin 22.22 is arranged in a direction perpendicular to the predetermined axial direction (vertical direction).
A holder portion is constructed by forming tapered protrusions 18 and 18 on each of the holder portions.

Further, the sleeve insertion opening 17 has a tapered part or the entire length thereof, and a stopper 25 formed at both lengthwise ends toward the center, which fits into the tapered protrusion 18.18 of the holder part. It has tapered recesses 19, 19 formed by gripping, and the tapered recesses 19, 1
Hydraulic cylinders 20 and 20 connected to the holder gripping portion 21 are supported and fixed via heat insulating materials 24 and 24 in respective directions orthogonal to the predetermined axial direction.
．． 21 are configured.

Since the compression pins 22.22 have a small diameter, the hydraulic cylinder 12.12 can be downsized, and the stopper 25 is configured so that the sleeve inserted into the sleeve insertion opening 17 is compressed by the compression pins 22, 22. This is to prevent elongation in the longitudinal axis direction due to the change in volume when the sleeve and the cable conductor move, and to use the preventing force to act as a compressive force between the sleeve and the cable conductor. In addition, the compression pin 22.22 is attached to the operating rod of the hydraulic cylinder 12.12 by screwing, tapering, or other attachment/detachment means, and the diameter and protrusion length of the compression pin 22.22 The compressive strength can be changed by changing the . And a heating heater 23.2 embedded in the holder part.
3 constitutes a heating section, and this heating heater 23
．． Insulation material 2 to prevent heat from 23 from leaking outside
4, 24 are provided between the holder gripping part 21.21.

Further, as shown in an enlarged view in FIG. 4, a detachment member 14 is provided with pattern protrusions 15, 15 on the side surfaces of both ends of the hydraulic cylinder 20, 20 connected to the tapered recesses 19, 19. 14, and the tapered recess 1
9, 19 and the upper and lower side plates 16.16 which are temporarily suspended, and are movably attached via a movable member 3 consisting of a link mechanism, so that the holder side provided on the upper part of the side plate 16.16 is inside. A holder detachment/separation mechanism is provided which supports a guide bin 28.28 fitted into a slit 27.27 curved in the slit 27.27.

In order to make a compression connection using the cable conductor connection compression device configured as described above, first, the compression holder 11 is
．． 11' is separated into left and right sides, and then the cable conductor with the conductor connection sleeve inserted is inserted into the sleeve insertion opening 17, and the left and right sides of the compression holder 11.11' are temporarily suspended. In this case, if a guide pin is provided on the dividing surface 26, it is suitable for preventing left and right deviations.

Then, the tapered recesses 19, 19' are fitted and held on the outer periphery of the tapered protrusion 18.18, which has been temporarily suspended, by the operation of the hydraulic cylinder 20.20.

In this state, the compression pin 22.22 is protruded by the compression hydraulic cylinder 12.12, and the cable conductor is deformed into a cylindrical shape (the tip is hemispherical) through the conductor connection sleeve, and the cable conductor is integrally connected. It is something to do.

The details are shown in FIG. That is, the conductor connection sleeve 33
Compression portion 34 corresponding to compression pin 22.22 via
A conductor 31 of a cable having an insulator 32 formed thereon
．． 31 is deformed into a cylindrical shape (the tip is semispherical), and the conductor 31
．． 31 is firmly compressed and connected by the conductor connection sleeve 33.

On the other hand, if the heating heaters 23.23 are energized while the compression pins 22.22 are pressurizing them for compression connection,
Since the compression holder 11.11' and the conductor connection sleeve are in close contact with each other, the conductor connection sleeve can be heated extremely efficiently. Therefore, the contraction operation after the heat-shrinkable tube is attached, which is performed in the next step after the compression connection, can be performed reliably.

In this case, the heating heater 23.2 is installed before the compression connection.
3, the heating time can be shortened.

In addition, in the above-mentioned compression connection, since the compression point is at one point on the left and right, the outer shape of the conductor connection sleeve does not need to be parallel as in the conventional case, and the outer shape of the conductor connection sleeve does not have to be tapered or locally tapered. It is possible to make a reliable compression connection even if the

In this example, the compression point is one point on the left and right, and if compression is to be performed on both sides, it is necessary to rotate the holder 11, 11' or the conductor connection sleeve 33 by 180 degrees.

In addition, when compressing both sides at the same time, the compression pin 22.
22 and hydraulic cylinders 12 and 12 may be provided at two locations on the left and right.

Now, when the compression pin 22 is inserted, the conductor connection sleeve 33 tries to expand in the longitudinal direction, but because of the tapered stopper 25, the force is transferred to the sleeve insertion opening 17.
There is a possibility that the conductor connection sleeve 33 may not be able to be removed from the sleeve insertion opening 17 of the holder 1'l, 11' due to contact with the inner wall or dividing surface 26,26 of the holder 1'l, 11'.

As a countermeasure against this, the detachment member 14.14 provided at the tip of the tapered protrusion is, is
[minute υ]] The wedge-shaped convex portion 15 is inserted into the surface 26 and pulled apart. That is, when the hydraulic cylinder 20 is pulled, the tapered recesses 19,1
9 is pulled, the inwardly curved slit 27.27 provided in the side plate 16.16 moves, and this slit 27.2
In order to move the guide pin 28.28 fitted to the iiMt removal member 14.14 inward, the iiMt removal member 14.14 has a wedge-shaped convex portion 15. 15 is the dividing surface 2 of the holder 11.11'
6.26, so the two can be separated.

Now, in the compression method described above, since the compression point is cylindrical, the outer diameter of the sleeve does not need to be a parallel sleeve like the conventional hexagonal compression method, and can be compressed even if it is tapered. The compression connection of different things becomes reasonable.

Furthermore, if the holder gripping parts 21, 21 are fixed to another member via a movable mechanism such as an air cylinder, the compression holder 11.11' can be opened and closed, gripped and separated from the left stone, and the compression pin 22.22 All pressing operations can be controlled remotely using pressure and hydraulic pressure, eliminating the need for direct human intervention and allowing automated compression connection work.

Furthermore, since the compression holder 11.11' is divided, it can be installed in a small space, ie, inside the device.

Note that various sensors necessary for performing the various controls described above, such as a pressure sensor, a position sensor such as an optical type or a contact type, etc., can also be provided.

[Effects of the Invention] As described above, according to the present invention, even though the compression holder is made smaller, it is possible to exert a large compression force and easily separate the compression holder and the conductor connection sleeve. This method solves all of the problems of the conventional method, can be incorporated into other manufacturing equipment, can automatically perform compression connection without manual labor, and provides a highly reliable compression connection cable.

[Brief explanation of drawings]

Figure 1 is a side view of an example of a compression device for connecting cable conductors, Figures 2 and 3 are front views, and Figure 4 is a compression device for connecting cable conductors shown in Figure 1. FIG. 5 is an enlarged cross-sectional view of a compression connection part of a cable manufactured using the compression device for connecting cable conductors according to the present invention, and FIG. This is a side view without showing an example of a compression device for connecting cable conductors. 11.11'... Compression holder 12.
20......Hydraulic cylinder 13...
...Movable member 14... Detachment member 15... Tree-like convex portion 16... Side plate 17... ...Sleeve insertion opening 18...
...Tapered protrusion 19...Tapered recess 21...Holder grip part 2
2...Compression pin 23...Heating heater 24...
...Insulation material

Claims (3)

[Claims] (1) In a compression device that compresses and connects cable conductors inserted into a conductor connection sleeve, an opening for insertion of the conductor connection sleeve is formed in the center of a holder that can be separated in a predetermined axial direction, and a a holder portion in which a compression pin connected to a hydraulic cylinder is disposed in the axial direction, and tapered protrusions are provided in each direction perpendicular to the predetermined axial direction of the splittable surface; , a part or the entire length thereof is formed into a tapered shape, and has a stopper formed toward the center at both ends in the length direction, and a tapered recess formed by fitting and gripping the tapered projection of the holder part. and a holder gripping part in which a hydraulic cylinder connected to the tapered recess is supported and fixed in each direction perpendicular to the predetermined axial direction via a heat insulating material, and a hydraulic cylinder connected to the tapered recess. A member having wedge-shaped protrusions on the tip side surfaces on both sides of the cylinder is inserted between the upper and lower side plates integrated with the tapered recess and is movably attached, and the holder side provided at the top of the side plates curves inward. A compression device for connecting a cable conductor, comprising: a holder detachment/separation mechanism supporting a guide pin fitted into a slit; and a heating section having a heating heater disposed in the holder section. (2) The compression device for connecting cable conductors according to claim 1, wherein the compression pin has a hemispherical tip and is detachably attached to the hydraulic cylinder. (3) The compression device for connecting cable conductors according to claim 1, wherein the pair of holders in the holder portion are opened and closed by fluid pressure.