JPS6218299B2 - - Google Patents

Description

[Detailed description of the invention]

(a) Industrial Application Field The present invention relates to an insertion device for a cylindrical part, such as a coil spring or a ferrule, in an automatic cable terminal attachment machine. (b) Prior art 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 a supply drum, cutting it to a certain length, inserting a coil spring, This is done by removing the sheath at the end of the cable with a knife, wire stripper, etc., applying adhesive to the removed part, inserting a ferrule, and crimping and fixing it. 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. As shown in Fig. 1, the conventional processing method involves feeding out a cable 2 from a supply drum 1, adjusting the required length and cutting it with a cutter 3, inserting a spring 7 into the cable 2, and then cutting the cut end. There is a way to attach ferrule 4 by processing the ferrule. Further, as shown in FIG. 2, a spring 7 is inserted into each of the plurality of cables 2 adjusted to the required length, and the cables 2 are held near both ends by chucks 5, 5, and each cable 2 is There is also a method in which processing machines 6, 6 are installed at both ends of the cable 2 according to the length thereof, and after processing both ends of the cable 2, the ferrule 4 is attached. Figure 3 shows the completed product, where spring 7 is ferrule 4.
It is used to obtain the bonding force between the female connector and the female connector. (c) Problems to be solved by the invention Conventionally, ferrules were attached using the method described above, which resulted in low processing efficiency and processing accuracy as a whole, especially the work of inserting a coil spring for each cable and the insertion of ferrules. Since the work was done manually, these tasks were one of the causes of lowering the overall processing efficiency. (d) Means for Solving Problems The purpose of the present invention is to provide a cylindrical part used in the spring insertion process or ferrule insertion process when fully automating a series of processes from cable adjustment to ferrule installation. To provide an automatic insertion device. In order to achieve the above object, the present invention comprises a positioning part for a stripped cable end, a chuck part for a cylindrical part, and an insertion part for a cylindrical part, and the positioning part includes a positioning part for the cable end. It is held so that it is on the same line as the chuck claw of the component chuck part, and is movable in the length direction of the cable end, and the chuck claw of the component chuck part is held in the vertical direction and in the length direction of the cable end. It is mobile and
The component insertion portion is configured to include a supply nozzle for the cylindrical component that is captured by the chuck claw (hereinafter referred to as the first invention). The chuck claw descends from a predetermined position, captures the component supplied to the component supply nozzle, returns to the predetermined position, and advances further to insert the core wire (first stage insertion). Next, the forward movement of the chuck pawl is temporarily stopped, the positioning part is released, and it is advanced the required distance along the cable, and the chuck pawl is moved forward again while holding the cable, and the insertion distance of the component is further advanced. (Second stage insertion).
By doing so, it is possible to reliably insert a cylindrical component such as a coil spring or a ferrule into the easily flexible end of the cable. Another object of the present invention is to provide an insertion device capable of inserting a cylindrical component such as a coil spring, which has been inserted up to the second stage as described above, further into the third stage. In order to achieve this object, in addition to the structure of the first invention described above, an air nozzle is provided in the component insertion part, and this air nozzle has the function of advancing the component as well as the tension of the cable. It also functions to open the sion member into an umbrella shape (hereinafter referred to as the second invention). (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 conveyance jigs 21 are attached to the conveyance device at regular intervals, and from the first station at the bottom of the first conveyance device 14, the second station to the sixth station corresponding to the peeling device 15 to the caulking device 19 are sequentially installed. A seventh station is provided below 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 shape in the coil take-up device 13, and this is
The cable is transferred to the transfer jig 21 on the first station by the transfer device 14, the transfer jig 21 is intermittently moved by the operation of the transfer device, the sheath at both ends or one end of the cable is stripped off at the second station, and the cable is transferred to the third station. Insert the spring at
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 above-described spring insertion device 16 and ferrule insertion device 18 are the subject of this invention. Spring insertion device 1
6 is realized by the second invention, and the ferrule insertion device 18 is realized by the first invention. Since the latter invention is a structure in which the air nozzle is removed from the former structure, an embodiment of the second invention, that is, the spring insertion device 16, will be first described here as an embodiment. This device 16 is broadly divided into: a cable end positioning section 22, a spring chuck section 23, and a spring insertion section 24. As shown in detail in FIG. 10, the cable end positioning section 22 has a left and right positioning plate 25, an upper claw 26 and a lower claw 27 for vertical positioning, and these are provided symmetrically in the left and right directions. The left and right positioning plate 25 is connected to the air cylinder 28 (fifth
) and is guided vertically by a guide plate 29. The positioning plate 25 has a V-shaped guide groove 30 open upward and a vertical positioning groove 31 continuous to the bottom of the groove. In addition, an upper claw 26 and a lower claw 27 for vertical positioning are provided.
are arranged on the front surface of the left and right positioning plate 25 (the first
Figure 1) Chuck groove 32 and positioning groove 3 at the tip
1 means that the positions in the left and right directions are aligned. The details of the drive device 33 for the upper and lower claws 26 and 27 are as follows.
As shown in Figure 0. As can be seen in the figure, the drive device 33 consists of a lower cylinder 34 and an upper cylinder 35, and the lower cylinder 34 is connected to the slider 3.
It is fixed at 6. The slider 36 is a guide 37
You can slide it back and forth on the top. The guide 37 is fixed to a base 38. A guide pole 39 is provided upright on the slider 36, and a connecting member 4 between the lower claw 27 and the upper claw 26 is attached to the guide pole 39.
0 and 41 are slidably inserted. A piston 42 is inserted into the lower cylinder 34, and a threaded portion 44 is provided at the portion of the piston rod 43 that has come out of the lower cylinder 34.
A flanged sleeve 45 is screwed to the threaded portion 44. The sleeve 45 passes through the center of the connecting member 40 with the lower claw 27, and the boss portion of the connecting member 40 is tightened between the retaining ring 46 fitted at the tip and the flange of the sleeve 45, and the nut 47 is used to tighten the boss portion of the connecting member 40. This is intended to prevent the sleeve 45 from coming off. Note that a piston 42 is provided at the upper end of the lower cylinder 34.
A flange 48 is provided to limit the rise of the. The piston rod 43 passes through the connecting member 41 between the upper cylinder 35 and the upper claw 26 and through the upper cylinder 35 and extends upward. This piston rod 43 has an air passage 49 in the center extending from its upper end to its lower end, so that compressed air can be supplied into the lower cylinder 34 from the upper end. A piston 50 is inserted into the upper cylinder 35, and a cylindrical piston rod 51 is provided on the piston 50. The aforementioned piston rod 43 passes through this cylindrical piston rod 51 and piston 50. The lower end of the cylindrical piston rod 51 engages with the aforementioned threaded portion 44,
Further, the piston 50 and the cylindrical piston rod 51 are integrated with the piston rod 43 by a nut 52 fastened to a threaded portion provided on the piston rod 43 inside the upper cylinder 35. Further, in the portion where the piston rod 43 passes through the cylindrical piston rod 51, an outer peripheral groove 53 is provided in the piston rod 43, and a small hole 54 communicating with the air passage 49 is provided in the groove 53.
Furthermore, a cylindrical piston 5 that coincides with the outer circumferential groove 53
A small hole 55 is provided in the portion 1, and the inside of the upper cylinder 35 and the outer circumferential groove 53 are communicated with each other. Further, a spring 56 is interposed between the piston 50 and the upper cover of the cylinder 35. Further, as shown in FIG. 11, a threaded cylinder 57 is fixed to the rear of the slider 36, and a threaded shaft 58 is screwed onto the threaded cylinder 57 so that the position can be determined.The threaded shaft 58 is connected to the piston rod of the air cylinder 59. has been done. Next, the spring chuck portion 23 will be explained.
The spring chuck portion 23 corresponds to the above-mentioned positioning portion 22 and is provided slightly behind it (to the right in FIG. 6). Each spring chuck portion 23 has a pair of chuck pawls 62 that are opened and closed in the left-right direction (left-right direction in FIG. 5) by an air cylinder 61 having a easy piston rod via a gear in a gear box 60. Further, the gearbox 60 described above is attached to a slider 64 that is moved vertically by another air cylinder 63. Further, the air cylinder 63 and the air cylinder support member 65 are moved by a slider 67 that is moved in the front and back direction (left and right direction in FIG. 6) by an intermediate stop cylinder 66 of a hydraulic lock type.
installed on. As shown in FIG. 7, each slider 67 is connected by a connecting member 68, and is connected to a piston rod 69 of the air cylinder 66 via the connecting member 68. Further, each slider 67 is supported by a guide member 70, and the guide member 70 and air cylinder 66 are connected to a frame 71. Next, the spring insertion part 24 is provided below the spring chuck part 23 and has a spring holder 72 fixed to a frame 71, and a spring supply nozzle 73 is installed on the spring holder 72 and an air nozzle is installed above the spring holder 72. 74
The spring supply nozzle 74 automatically supplies springs one by one from a spring supply device (not shown). In addition, the air nozzle 74
As described below, the tension member a of cable A is spread out in an umbrella shape, and the tension member a is pushed down to move the inserted spring b further inward due to its aerodynamic force. . [Operation] As can be seen in FIG. 4, the cable A, whose both ends are supported by the conveying jig 21, has the sheaths at both ends peeled off by the stripping device 15, and is sent in that state to the spring insertion device 16. It's coming. In the spring insertion device 16, first, the cable A
Both ends of are inserted into the V-shaped grooves 30 of the positioning plate 25 (FIG. 10). Next, when the positioning plate 25 is raised by the action of the air cylinder 28, the end of the cable A enters the positioning groove 31, and positioning in the left and right direction is performed. Next, from the upper end of the piston rod 43 to the passage 49
When compressed air is supplied through the lower cylinder 34, the pressure inside the lower cylinder 34 increases. This pressure is the piston rod 4
3, the piston 42 and the piston rod 43 rise, and the lower claw 27, which is integral with them, rises, and as the piston 50 rises, the spring 56 engaged with the lower claw 27 rises. The upper cylinder 35 is lifted, and the upper claw 26 integrated with the upper cylinder 35 is raised. The piston 42 of the lower cylinder 34 is connected to the flange 48
When the piston rod reaches its upper limit, the piston rod 43
After stopping rising, the air pressure supplied to the upper cylinder 35 from the small holes 54 and 55 rises, and when that pressure overcomes the spring force of the spring 56, the upper cylinder 35 descends while compressing the spring 56. Then, the upper claw 26 matches the lower claw 27, and the end of the cable A is held between them to determine the vertical position. In the above state, the spring supply nozzle 73 (Fig. 6)
When the spring b is sent out to the spring holder 72 through
The chuck pawl 62 is opened by the air cylinder 61, and the gear box 60 and the chuck pawl 62 are lowered by the air cylinder 63, and the chuck pawl 6 is removed.
2 (FIG. 8). spring b
The chuck claw 62 that has captured the cable is raised again by the air cylinder 63 and stopped at a position where its spring b is coaxial with the end of the cable A held by the above-mentioned upper and lower positioning claws 26 and 27. . This position is also coaxial with the air nozzle 74. When compressed air is blown out from the air nozzle 74 in this state, the tension member a exposed from the stripped part of the end of the cable A is opened like an umbrella around the core wire c, and the tension member a is opened in an umbrella shape around the core wire c. is exposed. Therefore, when the slider 67 is pushed forward by the action of the air cylinder 66 and the chuck pawl 62 is moved from the chain line position to the solid line position in FIG.
The spring b captured by the chuck claw 62 is connected to the cable A.
The first stage of insertion is performed. The chuck pawl 62 temporarily stops in this state, but the upper and lower positioning pawls 26 and 27 are once released, and the air cylinder 59 (FIG. 11) is actuated to move the positioning part 23 including the upper and lower pawls 26 and 27 forward. Move an appropriate distance and hold cable A again (Figure 9). After that, the chuck pawl 62 is pressed against the spring b.
When the upper and lower jaws 26 and 27 as well as the chuck claw 62 are released, the spring b is moved toward the cable carrier 80 by air force. pushed into
The third stage of insertion is completed to complete the spring insertion. Note that the positioning portion 22 and the spring chuck portion 23 return to their original states when the insertion of the spring b is completed. The configuration and operation of the spring insertion device 16 are as described above, but the ferrule insertion device 18 has the above configuration and operation without the air nozzle 74. That is, the ferrule insertion device 18 is provided in the next step after the adhesive applicator 17 as shown in FIG. 4, and the cable A sent to this step is as shown in FIG. Adhesive d is applied around the core wire c, and the tension member e is in a slightly open state. The end of the cable A is held by upper and lower claws 26 and 27, as shown in FIG. 13, and the ferrule b' is supplied from the ferrule supply nozzle 73' to the ferrule holder 72'. This ferrule b' is captured by the chuck pawl 62 and inserted into the core c of the cable A in the same manner as the spring insertion described above.
Next, the upper and lower claws 26 and 27 are held in slightly retracted positions as shown in FIG.
Move forward further and use ferrule b' to reverse tension member e and insert it until it is completely covered. Since adhesive d is applied between core wire c and tension member e, by inserting ferrule b', cable A and ferrule
b' are glued together. (F) Effect As stated above, the first invention is such that the holding position of the cable end by the positioning part is changed according to the entry of the cylindrical part (ferrule, etc.), and the cable is inserted in two stages. Therefore, the cylindrical part can be reliably inserted into the cable end which is easily bent. In addition, the second invention, in which an air nozzle is added to the structure of the first invention, has the above-mentioned effects, as well as being able to insert cylindrical parts (coil springs, etc.) deeper, and applying adhesive after the peeling process. When used as a spring insertion device before the process, the tension member opens into an umbrella shape due to air force, and
As the spring passes through the tension member, the tension member bends and becomes prone to folding. Therefore, the tension member can be easily folded back in the next adhesive application step.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the conventional manufacturing method, Fig. 2 is an explanatory diagram of another conventional manufacturing method, Fig. 3 is a partially omitted front view of the finished product, and Fig. 4 is an overall view of the automatic cable terminal attaching machine. 5 is a front view of an embodiment of the present invention, FIG. 6 is a side view of the spring chuck portion and spring insertion portion of the same, FIG. 7 is a partially omitted plan view of FIG. 6, and FIG.
Fig. 9 is an explanatory diagram of the operation, Fig. 10 is a cross-sectional view of the positioning section, Fig. 11 is a longitudinal cross-sectional side view of Fig. 10, and Fig. 12 is a cross-sectional view of the positioning section.
The figure is a side view of the cable end after the adhesive application process has been completed, and FIGS. 13 and 14 are explanatory diagrams of the operation of other embodiments. 16... Spring insertion device, 22... Positioning section,
23...Spring chuck part, 24...Spring insertion part,
25... Left and right positioning plate, 26... Upper claw, 27...
... lower claw, 33 ... drive device, 36 ... slider,
59...Air cylinder, 61...Air cylinder,
62...Chuck claw, 63...Air cylinder, 6
6...Air cylinder, 67...Slider, 72...
...Spring holder, 73...Spring supply nozzle, 74...
Air nozzle, a... tension member, b... spring, b'... ferrule, c... core wire, d... adhesive, e... tension member.

Claims (1)

[Claims] 1. A positioning portion for a stripped cable end;
It is composed of a chuck part of the cylindrical part and an insertion part of the cylindrical part. The chuck claw of the component chuck portion is movable in the vertical direction and the length direction of the cable end, and the component insertion portion supplies a cylindrical component to be caught by the chuck claw. A cylindrical component insertion device for an automatic cable terminal attachment machine, characterized by being equipped with a nozzle. 2. The cylindrical component insertion device for an automatic cable terminal attaching machine according to claim 1, wherein the cylindrical component is a coil spring or a ferrule. 3 Positioning part of the stripped cable end,
consisting of a chuck part of the cylindrical part and an insertion part of the cylindrical part, the positioning part holds the cable end so that it is in line with the chuck pawl of the part chuck part and the air nozzle of the part insertion part; and is movable in the length direction of the cable end, the chuck claw of the component chuck portion is movable in the vertical direction and the length direction of the cable end, and the component insertion portion is captured by the chuck claw. A cylindrical component insertion device in an automatic cable terminal attaching machine, comprising a supply nozzle for cylindrical components and the air nozzle described above. 4. The cylindrical component insertion device in an automatic cable terminal attaching machine according to claim 3, wherein the cylindrical component is a coil spring.