JPH0748394B2 - Compressor of sleeve for wire connection - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for compressing a metal sleeve for connecting electric wires, and more particularly, to a pair of opposing electric wires supporting the electric wire with the sleeve mounted on both sides. A support member, a hydraulic compressor movable along the sleeve while repeatedly performing compression-release-movement operations between the pair of electric wire support members, and a moving unit for moving the hydraulic compressor, Moreover, the electric wire support member is controlled so that the electric wire can be released in association with the compression operation of the hydraulic compressor, so that the expansion of the electric wire due to the compression can be released. It relates to the device.

(Prior Art) Conventionally, as a compression device for a wire connection sleeve, a pair of opposing wire support members that support wires fitted with the sleeve are provided on a pedestal, and a hydraulic pressure is reciprocally movable between the pair of wire support members. It is known that a compressor is provided and the hydraulic compressor is manually movable via a chain or the like. In this compression device, while the ends of two electric wires to be connected are inserted into the sleeve from both sides, the electric wires are held by the electric wire support members on both sides of the sleeve, and the sleeve is held between a pair of dies of the hydraulic compressor. , And causes the hydraulic compressor to repeatedly perform compression-release-movement operations to perform compression for a predetermined length.

(Problems to be Solved by the Invention) In the above-described conventional compression device for the wire connection sleeve,
Since the electric wire support member firmly holds the electric wire to be compression-connected on both sides, if the compression operation of the hydraulic compressor causes axial expansion of the sleeve and the electric wire, this cannot be escaped. As a result, the sleeve may be warped, and the warp and its correction may impair the connection strength. Further, conventionally, since the extension of the electric wire and the sleeve has to be absorbed by the bending of the electric wire between the electric wire supporting members, the electric wire supporting member is easily stressed and damaged, and in order to reduce the stress, If the distance between the electric wire support members is increased, the device becomes large in size.

The present invention solves the above-mentioned problems of the prior art, and does not cause warpage of the sleeve due to compression, and does not apply excessive stress to the device during the compression operation. It is the one we are trying to provide. .

(Means for Solving Problems) In the present invention, in order to solve the above conventional problems,
On the pedestal 1, a pair of opposing electric wire supporting members 2 and 2 for supporting the electric wire W with the sleeve S mounted thereon and the sleeve S while repeatedly performing compression-release-movement operations between the pair of electric wire supporting members 2 and 2. In the compression device of the sleeve for wire connection, which is provided with the hydraulic compressor 3 that is movable along the line, and the moving means 5 for moving the hydraulic compressor 3, the wire support member 2 is
A configuration is adopted in which the electric wire W is releasably controlled in conjunction with the compression operation of the hydraulic compressor 3.

(Operation) In the compression device of the present invention, the two electric wires W to be connected
Both ends of the electric wire W are gripped by the electric wire supporting members 2, 2 on both sides of the sleeve S, and the sleeve S is inserted between the pair of dies 6, 6 of the hydraulic compressor 3. The hydraulic compressor 3 is arranged and sequentially moved along the sleeve S while repeating the compression-release-movement operation of the hydraulic compressor 3 to perform the compression operation of a predetermined length. The electric wire W extends in the axial direction due to the compression of the sleeve S, but the electric wire support member 2 releases the electric wire W during the compression operation to allow the electric wire W to extend. Therefore, the wire support member 2 is not unduly stressed, and the sleeve S is not warped.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 9. 1 is a schematic perspective view of a compression device, FIG. 2 is a schematic perspective view of a compression device, FIG. 2 is a front view of the compression device, FIG. 3 is a plan view of the compression device, and FIG. 4 is a compression device. FIG. 5 is a side view of the compressor, FIG. 5 is a control system diagram of the compression device, FIG. 6 is a perspective view of a die and a sensor, and FIG.
FIG. 8 is an exploded perspective view of the hydraulic compressor, FIG. 8 is a schematic front view of the control device, and FIG. 9 is an exploded perspective view of the support member.

The sleeve compressing apparatus of the illustrated embodiment has a portable gantry 1 equipped with casters, and a pair of electric wire support members 2 provided on the gantry 1 so as to face each other to support an electric wire W having a sleeve S mounted thereon. 2, a hydraulic compressor 3 provided on the base 1 so as to be capable of reciprocating between the pair of electric wire support members 2, 2, and a moving means 5 for driving the motor 4 for moving the hydraulic compressor 3.
In addition, the hydraulic compressor 3 includes a plurality of exchange dies 6 corresponding to sleeves S of various sizes.

The hydraulic compressor 3 is mechanically connected to the drive motor 4 via a moving means 5 composed of a combination of a screw rod 7 and a nut 8 screwed onto the screw rod 7, and the screw rod 7 is rotated by forward and reverse rotations of the drive motor 4. It is possible to reciprocate by rotating 7 forward and backward. As shown in FIG. 7, the hydraulic compressor 3 includes a lower frame 10 having rollers 9 rolling on the gantry 1 and an upper frame 11 having the same shape.
A pair of hydraulic heads 12 and 12 horizontally opposed to each other are held. That is, the upper and lower frames 10 and 11 are formed with a pair of rectangular engaging holes 10a and 11a facing each other on both sides, and the other head 1
Two prism-shaped engaging projections 12a, 12a are provided on the upper and lower sides of the head 2, and the heads 12, 12 are fitted by engaging the engaging projections 12a with the engaging holes 10a, 11a of the upper and lower frames, respectively. It is held so that it does not open the gap. The dies 6 can be attached to and detached from each head 12 so as to face each other, and the dies 6 can be compressed by the oil supply from the hydraulic pumps P, respectively.

As shown in FIG. 6, each die 6 is provided with an identifying portion 6a extending downward in one of the pair. The identification portion 6a is provided with an identification hole 6b so that the type of the die 6 can be identified by an arrangement combination of up to four holes 6b in one row.

As shown in FIG. 6, in the lower part of the die 6 on the lower frame 10,
A photo sensor 14 is provided which receives the identification part 6 when the die 6 is mounted on the head 12 and detects the type of the die 6 by the arrangement of the holes 6b.

The controller 15 having a built-in microcomputer is mounted on the pedestal 1
The control valve 16 of the hydraulic compressor 3 and the drive motor 4 are separately provided in response to a signal from the sensor 1 and are stored in advance in accordance with the compression pitch and the number of compressions specific to the sleeve S corresponding to the die 6 stored in advance. .

The electric wire support member 2 is movable on the gantry 1 in a direction orthogonal to the moving direction of the hydraulic compressor 3, and is always on the gantry 1
It is urged to return to the center of. That is, as shown in FIG.
It is mounted on the pedestal 1 via. Rails 18 are horizontally fixed to the side surface of the support plate 25 in a direction orthogonal to the moving direction of the hydraulic compressor 3, and spring-loaded biasing members 20 are attached near both ends of the rail 18. The return pin 20a that horizontally protrudes from the biasing member 20 in opposition to each other is
It is urged by an internal spring to always project. The mounting frame 19 is engaged with the rail 18 via a slide bearing 26 so as to be horizontally movable, and has a return pin 20a at both ends.
It is pushed by and always returns to the center. Therefore, when the compression operation by the hydraulic head 12 is performed in a state where the centers of the dies 6 and 6 and the centers of the electric wire W and the sleeve S do not coincide with each other, and the sleeve S and the electric wire W move horizontally. In addition, since the electric wire support member 2 moves following the electric wire support member 2, excessive stress is not applied to the device. The wire support member 2 also includes a gripping member 17 that grips and releases the wire W at the timing of the compression and release operations of the hydraulic head 12. That is, the mounting frame 19 is provided with the fixed gripping member 21 and the movable gripping member 22 so as to be gripped and released by the forward and reverse rotations of the motor 23. The fixed grip member 21 is fixed to the mounting frame 19, and an eye bolt 28 with a wing nut 27 is pivotally attached to one end side thereof. The eyebolt 28 can be moved into and out of the engagement recess 22a formed at one end of the movable gripping member 22 by swinging, and the electric wire W is sandwiched between the gripping members 21 and 22 during use. The wing nut 27 is tightened with. A rotating piece 22b having a screw hole 22c is pivotally attached to the other end of the movable grip member 22. Then, the screw shaft 23a of the motor 23 fixed vertically to the mounting frame 19
Is screwed into the screw hole 22c of the rotating piece 22b, and the motor 23
The forward / reverse rotation of the movable gripping member 22 causes the movable gripping member 22 to rotate about the engaging portion with the eyebolt 28 as shown by the arrow in FIG. is there. Reference numeral 24 denotes a rotation sensor, which counts the number of rotations of the motor 23 and sends a signal thereof to the control device 15 in order to limit the operation range of gripping and releasing between the gripping members 21 and 22. Is used to control the forward / reverse rotation and stop of the motor 23. Therefore, during the compression operation by the hydraulic head 12, the gripping member 17 releases the electric wire WW to allow its extension.

Therefore, when the electric wire connection work is performed using the compressor of this embodiment, as shown in FIGS.
The upper frame 11 is removed to release the space between the heads 12 and 12, the die 6 is selected according to the type of the sleeve S to be compressed, and this is mounted on the head 12. Then, with the ends of the two electric wires W to be connected to both sides of the sleeve S being inserted, the sleeve S is arranged at substantially the center of the pedestal 1, and the holding member 2
Place the wire W between 1 and 22 and adjust the wing nut 27 to adjust the wire W.
Grip lightly. Next, the upper frame 11 is fitted onto the heads 12 and 12, the switch of the hydraulic pump P is turned on, and the power switch 25 of the control device 15 is turned on. Next, the hydraulic compressor 3 is moved and placed in the center of the sleeve S. The movement of the hydraulic compressor 3 can be freely performed by operating the left and right movement switch 26 of the control device 15.

The sensor 14 is an identification part of the die 6 mounted on the hydraulic compressor 3.
The type of the die 6 is detected from 6a, a signal is sent to the control device 15, and the model number of the die 6 is displayed on the display 27.

Then, when the start switch 28 is turned on, based on the signal from the sensor 14, the braking / controlling device 15 drives the drive motor 4, according to the compression pitch and the number of compressions specific to the sleeve S corresponding to the die 6 stored in advance. The control valve 16 and the motor 23 are controlled to start the compression operation. When the compression operation starts and the hydraulic pressure in the head 12 reaches a predetermined value, a signal is issued from the pressure switch 31 and the motor 23 is transmitted via the control device 15.
A rotation signal is issued to. By the rotation of the motor 23, the gripping member 17 releases the electric wire W prior to the compression of the sleeve S,
Allows the electric wire W to grow along with the compression.

When the center between both dies 6, 6 does not coincide with the center of the electric wire W and the sleeve S during the compression operation, a phenomenon occurs in which the electric wire W and the sleeve S are pushed by the die 6 and move in the horizontal direction. And the electric wire support member 2 moves in the horizontal direction against the spring force of the biasing member 20 to move the electric wire W and the sleeve S.
Is allowed, and the stress applied to the electric wire support member 2 is reduced.

Then, when the compression operation is completed and the hydraulic pressure reaches a predetermined value,
A signal is issued from the pressure switch 29, a return operation signal is issued to the control valve 16 via the control device 15, and the motor
A rotation signal is issued to the motor 23, the motor 23 rotates in the opposite direction, and the gripping member 17 tightens the electric wire W before the die 6 releases the sleeve S. The movement of the electric wire W due to the subsequent movement of the hydraulic compressor 3 is prevented.

When the die 6 finishes the returning operation and the hydraulic pressure in the head 12 reaches a predetermined value, a signal is issued from the pressure switch 30 and a rotation signal is issued to the drive motor 4 via the control device 15 so that the motor 4 has a predetermined number. It rotates to move the hydraulic compressor 3 by a predetermined distance. In this way, the same operation is repeated a predetermined number of times to complete the compression connection of the sleeve S.

In the case of compression by this compression device, since the sleeve S is horizontally compressed from both sides simultaneously by the dice 6,6,
The compression deformations on both sides of the sleeve are substantially equal to each other. Therefore, since the sleeve S does not warp after compression, no correction is required, and a decrease in connection strength accompanying it is avoided.

Further, the number of times of a series of compression operations and the compression pressure of each compression operation can be displayed and confirmed on the display 27 of the control device 15 each time, and can be printed out from the printer 32 and recorded for later. deep.

The present invention is not limited to the illustrated embodiment, but can be applied to, for example, one in which a hydraulic compressor is manually moved.

(Effects of the Invention) As described above, in the present invention, a pair of opposing wire supporting members 2 and 2 for supporting the wire W having the sleeve S mounted thereon and the pair of wire supporting members 2 and 2 are mounted on the gantry 1. The compression of the sleeve for electric wire connection provided with the hydraulic compressor 3 which is movable along the sleeve S while repeatedly performing compression-release-movement between and the moving means 5 for moving the hydraulic compressor 3. In the device, since the electric wire support member 2 is configured to control the electric wire W so that the electric wire W can be released in association with the compression operation of the hydraulic compressor 3, the electric wire W is released when the sleeve S is compressed and the electric wire W is stretched by the compression. By releasing the cable in the axial direction, there is no warp in the sleeve, no unreasonable stress is applied to the device during compression operation, and there is no need to allow bending of the wire. Sleeve compression device There is an effect that it can be provided.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a schematic perspective view of a compression device, FIG. 2 is a front view of the compression device, FIG. 3 is a plan view of the compression device, and FIG. Side view of device, fifth
FIG. 6 is a control system diagram of the compression device, FIG. 6 is a perspective view of a die and a sensor, FIG. 7 is an exploded perspective view of a hydraulic compressor, FIG. 8 is a schematic front view of the control device, and FIG. 9 is a support member. FIG. 10 is an exploded perspective view of FIG. 10, and FIG. 10 is a front view of the support member. 1 ... Stand, 2 ... Electric wire support member, 3 ... Hydraulic compressor,
5 ... Movement, 6 ... Dice, 18 ... Rail, 19 ...
Mounting frame, 20 ... biasing member, 17 ... gripping member, 21 ... fixed gripping member, 22 ... movable gripping member, 23 ... motor, S ...
Sleeve, W ... electric wire.

Claims (1)

[Claims] 1. A pair of opposing electric wire support members for holding an electric wire fitted with a sleeve on a pedestal, and a pair of electric wire support members freely movable along the sleeve while repeatedly performing compression-release-movement operations. In the compression device for the sleeve for wire connection provided with the hydraulic compressor and the moving means for moving the hydraulic compressor, the wire support member can release the wire in conjunction with the compression operation of the hydraulic compressor. A sleeve compression device for connecting electric wires, which is controlled by