JPS6218300B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an adhesive applicator for an automatic cable terminal attaching machine.

(b) Prior art and its problems The work of attaching metal terminals, so-called ferrules, to both ends or one end of cables such as optical fiber cables involves feeding out the cable from the supply drum, cutting it to a certain length, and then attaching it to a coil spring. The sheath at the end of the cable is removed with a knife or wire stripper, etc., the removed part is coated with adhesive, a ferrule is inserted, and the ferrule is crimped and fixed. It can be done.

In carrying out the above steps, although processing machines have traditionally been used in some areas, the series of steps for attaching the ferrule is actually mostly done manually. In particular, in the adhesive application process, the tension member at the end of the cable with the sheath removed was opened to expose the core wire, and the adhesive was applied to the core wire, which was all done manually. This process was one of the causes of lowering the overall processing efficiency.

(C) Means for Solving Problems An object of the present invention is to provide an adhesive applicator for use in an adhesive applicator process when fully automating a series of processes from cable length adjustment to ferrule installation. There is something to do.

In order to achieve the above object, the present invention comprises a positioning part for the cable end which has been stripped and has a tension member pulled up, and an adhesive application part, and the positioning part is provided so that the cable end is coated with adhesive. The tension member folding guide at the adhesive application section is held so that it is on the same line as the guide hole of the tension member folding guide at the cable end, and is movable in the length direction of the cable end. The guide hole formed in the closed state is sized to fit the cable core wire, and is configured to be freely movable in the length direction of the part and can be opened and closed. The structure is such that a space is created.

The guide of the adhesive application section has the function of inserting the cable core wire into its guide hole as it moves forward, and folding back the tension member with its front surface to completely expose the core wire. Further, the application nozzle of the adhesive application section descends onto the exposed core wire and applies adhesive to the exposed core wire. The guide is opened after the adhesive is applied to release the tension member and return it to its original open state.

(e) Embodiment [Structure] First, an overview of the entire automatic cable terminal attaching machine will be explained based on FIG.

The equipment for carrying out each process is arranged as follows.

That is, in order from the left end of the figure, the cable supply device 10, the feeding length adjustment device 11, and the cutting guide device 1.
2 coil removal device 13, first transfer device 14, peeling device 15, spring insertion device 16, adhesive application device 17 ferrule insertion device 18, caulking device 19,
and a second transfer device 20 are arranged, and a transfer jig 2 is disposed between the first transfer device 14 and the second transfer device 20.
One transport device is provided. A large number of conveying jigs 21 are attached to the conveying device at regular intervals, starting from the first station 1 at the bottom of the first conveying device 14 and moving from the second station to the sixth station corresponding to the peeling device 15 to the caulking device 19 in order. A seventh station is provided below the station and the second transfer device 20, and the transfer device performs intermittent movement in which the transfer jig 21 temporarily stops at each station.

The above cable terminal automatic installation machine is for cable A
After adjusting and cutting it to a certain length, it is wound into a coil in the coil take-up device 13, and transferred to the transfer jig 21 on the first station by the first transfer device 14, and the transfer device is operated. The conveying jig 21 is moved intermittently by, the sheath of both ends or one end of the cable is peeled off at the second station, and the spring is inserted at the third station.
An adhesive is applied to the conductor at the fourth station, a ferrule is inserted at the fifth station, and the ferrule is crimped and fixed at the sixth station. Thereafter, the transfer is made to the second transfer device 20 at the seventh station.

The adhesive application device 17 described above is the object of the present invention, and will be described in detail below.

First, the procedure for applying adhesive using the device 17 will be explained based on a to e in FIG. 2. Figure a shows a state in which the end of the cable sheath 22 is removed in the previous process, the exposed tension member 23 is folded in an umbrella-like manner, and the core wire 24 is exposed. It's coming. The device 17 has a tension member folding guide 25 as shown in figures b and c. This guide 5 consists of a pair of opposing guide pieces 2 that can be opened horizontally in the left and right directions.
6 and 26, a guide hole 28 is formed by combining with a recess 27 provided at the front end of each guide piece 26, and a space 30 for inserting an adhesive application nozzle 29 is formed in the upper part. .

When the guide 25 is advanced and the core wire 24 is inserted into the guide hole 28, the tension member 23
It is folded back at the inner peripheral surface of the guide hole 28 and enters into the guide 25 with only the core wire 24 completely exposed.
Stops in place. Next, the nozzle 29 is lowered to apply the adhesive 31 to the core wire 24. Thereafter, as shown in Figure e, when the guide 25 is released, the tension member 23 returns to its original open state due to its own elasticity and holds the adhesive 31.

In addition, in the next step, the tension member 23 is turned upside down and a ferrule 32 is attached to the end of the cable coated with adhesive as described above, as shown in figure f.
is inserted, and the cable sheath 22, core wire 24, tension member 23, and ferrule 32 are integrated with adhesive.

FIG. 3 is an example of a completed product, and 33 is a spring inserted before the ferrule 32 is inserted.

Next, details of the adhesive coating device 17 will be explained based on FIGS. 4 to 8.

This device mainly consists of a cable end positioning section 34 and an adhesive application section 35.

The cable end positioning section 34 has a left-right positioning plate 36, an upper claw 37 for vertical positioning, and a lower claw 38, which are provided symmetrically.

The left and right positioning plates 36 are connected to an air cylinder 39 and guided in the vertical direction by a guide plate 40. This positioning plate 36 has an upwardly open V
It has a shaped guide groove 41 and a vertical positioning groove 42 continuous to the bottom of the groove.

Furthermore, the chuck grooves 43 provided at the tips of the upper and lower positioning claws 38 and 37 (FIG. 7) and the positioning grooves 43 are aligned in the left-right direction.

Details of the drive device 44 for the upper and lower claws 38, 37 are given in the seventh section.
As shown in the figure. As can be seen in the figure, it consists of a lower cylinder 45 and an upper cylinder 46,
The lower cylinder 45 is fixed to a slider 47. The slider 47 can slide back and forth on the guide 48. The guide 48 is fixed to a base 49. A guide pole 50 is attached to the slider 47.
is erected, and connecting members 51 and 52 of the lower claw 37 and the upper claw 38 are slidably inserted into the guide pole 50.

A piston 53 is inserted into the lower cylinder 45, and a threaded portion 55 is provided in the portion of the piston rod 54 that has come out of the lower cylinder 45.
A flanged sleeve 56 is screwed to the threaded portion 55. The sleeve 56 passes through the center of the connecting member 51 with the lower claw 37, and the boss portion of the connecting member 51 is tightened between the retaining ring 57 fitted at the tip and the flange of the sleeve 56, and the nut 58 is used to tighten the boss portion of the connecting member 51. This is intended to prevent the sleeve 56 from coming off.

Note that a piston 53 is provided at the upper end of the lower cylinder 45.
A flange 59 is provided to limit the rise of the.

The piston rod 54 passes through the connecting member 52 between the upper cylinder 46 and the upper pawl 38 and through the upper cylinder 46 and extends upward. The piston rod 54 has an air passage 60 in the center extending from its upper end to its lower end, so that compressed air can be supplied into the lower cylinder 45 from the upper end.

A piston 61 is inserted into the upper cylinder 46, and a cylindrical piston rod 62 is provided on the piston 61. The aforementioned piston rod 54 passes through this cylindrical piston rod 62 and piston 61. The lower end of the cylindrical piston rod 62 engages with the aforementioned threaded portion 55,
Further, the piston 61 and the cylindrical piston rod 62 are integrated into the piston rod 54 by a nut 63' fastened to a threaded portion 63 provided on the piston rod 54 inside the upper cylinder 46. Furthermore, in the portion where the piston rod 54 passes through the cylindrical piston rod 62,
The piston rod 54 is provided with an outer peripheral groove 64, and the groove 64 is provided with a small hole 65 communicating with the air passage 60. Furthermore, a small hole 66 is provided in the portion of the cylindrical piston 61 that coincides with the outer circumferential groove 64, and the upper cylinder 4
6 and the outer circumferential groove 64 are communicated with each other.

Further, a spring 67 is interposed between the piston 61 and the upper cover of the cylinder 46.

Further, as shown in FIG. 8, a threaded cylinder 68 is fixed to the rear part of the slider 47, and a threaded shaft 69 is screwed to this for positioning. The screw shaft 69 is connected to a piston rod of an air cylinder 70.

Next, apply adhesive 3 based on FIGS. 4 and 5.
5 will be explained. The adhesive application section 35 corresponds to and is provided behind the above-described positioning section 34.

The adhesive applicator 35 connects an air cylinder 71 fixed to the frame 49 and its piston rod 72.
Tension member folding guide 25 attached to
has. The folding guide 25 is connected to the piston rod 7
It is opened and closed by the movement of a small air cylinder 74 fixed to 2. Since its structure is as described above in FIG. 2, its explanation will be omitted.

Further, the adhesive applicator 35 has an air cylinder 75 for raising and lowering the applicator nozzle 29 . This air cylinder 75 is fixed to a bracket 76. The application nozzle 29 is connected to an adhesive tank 78 through a hose 77.
A pair of adhesive extrusion rings 79 provided in the middle of the hose 77 extrude the required amount of adhesive for the required time.

[Effect]

As can be seen in FIG. 1, the cable A, whose both ends are supported by the conveying jig 21, has its sheaths removed from both ends in the stripping device 15, and then the spring 33 is inserted in the spring insertion device 16.
At this time, the tension member 23 is sent to the adhesive applicator 17 of the present invention in a state where the tension member 23 is folded into an open umbrella shape.

In the adhesive applicator 17, both ends of the cable A are first inserted into the V-shaped grooves 41 of the positioning plate 36. Next, when the positioning plate 36 is raised by the action of the air cylinder 39, the end of the cable A enters the positioning groove 42, and positioning in the left and right direction is performed.

Next, when compressed air is supplied from the upper end of the piston rod 54 (FIG. 7) through the passage 60, the pressure in the lower cylinder 45 increases. When this pressure becomes large enough to overcome the weight of each member applied to the piston rod 54, the piston 53 and the piston rod 5
4 rises, the lower claw 37 integrated therewith rises, and the upper cylinder 46 is lifted by the spring 67 engaged with the rise of the piston 61, causing the upper claw 38 integrated with the upper cylinder 46 to rise.

The piston 53 of the lower cylinder 45 is connected to the flange 59
When the piston rod 54 reaches its upper limit, the piston rod 54
After stopping rising, the air pressure supplied to the upper cylinder 46 from the small holes 65 and 66 increases, and when that pressure overcomes the spring force of the spring 67, the upper cylinder 46 descends while compressing the spring 67. Then, the upper claw 37 matches the lower claw 38, and the end of the cable A is held between them to determine the vertical position.

In the above state, when the air cylinder 71 (FIG. 5) is operated, the guide 25 in the closed state moves forward, and the coating nozzle 29 is lowered by the air cylinder 75, as shown in FIG. , the tension member 23 is turned upside down and the adhesive 31 is applied, and then the guide 25 is released to complete the series of operations.

Note that the positioning section 34 and the adhesive application section 35 return to their original states after completing a series of operations.

(F) Effect As described above, in this invention, the tension member is folded back by the front surface of the guide, and adhesive is applied with the core wire exposed, so that the folded part of the tension member is Can be applied intensively. The adhesion force between the ferrule and the cable is
Although the adhesive force between the core wire, tension member, and ferrule governs each other, the above-mentioned application area is the most effective area for strengthening the adhesion between these three.

Furthermore, when the tension member is released by opening the guide, the tension member returns to its original open state due to its own elasticity and comes into contact with the adhesive, thereby preventing it from falling.

Furthermore, the above-mentioned tension member is folded back again when inserting the ferrule, and at that time, the adhesive also adheres to the tension member and wraps around to the side that contacts the ferrule, which has the effect of ensuring secure adhesion with the ferrule. .

[Brief explanation of the drawing]

Figure 1 is an overall view of the automatic cable terminal attachment machine, Figures a to f in Figure 2 are explanatory diagrams of the adhesive application required, Figure 3 is a partially omitted front view of the finished product, and Figure 4 is this A front view of the embodiment of the invention, FIG. 5 is a plan view of FIG. 4,
6 is a partially omitted side view of FIG. 4, FIG. 7 is a longitudinal sectional view of the positioning portion, and FIG. 8 is a longitudinal sectional side view of FIG. 7. 17... Adhesive applicator, 22... Sheath, 2
3... Tension member, 24... Core wire, 25...
...Guide, 28...Guide hole, 29...Nozzle,
30... Space, 31... Adhesive, 34... Positioning section, 35... Adhesive application section, 44... Drive device, 70... Air cylinder, 71... Air cylinder.

Claims (1)

[Claims] 1 Consists of a positioning part of the cable end which has been stripped and pulled up and the tension member is applied, and an adhesive application part, and the positioning part is a guide hole of the tension member folding guide where the cable end is the adhesive application part. The tension member folding guide of the adhesive application section is held so that it is on the same line as the cable end, and is movable in the length direction of the cable end. ,
The guide hole is configured to be openable and closable, and the guide hole formed in the closed state is sized to fit the cable core wire, and a space is formed in the closed state for insertion of the adhesive application nozzle. Adhesive applicator for automatic cable terminal attachment machine.