JPH0413667B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic pressure welding machine for manufacturing a pressure welding type electrical harness in which one or more pressure welding connectors are connected to a group of electric wires of a predetermined length at a predetermined interval. In particular, the present invention relates to a continuity check device that checks the electrical connection between each contact and each electric wire of a pressure welding connector that is press-connected by the automatic pressure welding machine.

A pressure welding connector has a pressure welding slot that is narrower than the diameter of the core wire of a covered electric wire to which a plurality of contacts received in parallel are received in an insulated housing with an open top, and that when an electric wire is inserted into the slot, the slot The edges on both sides break through the insulation coating of the wire and make electrical contact with the core wire, so it is possible to visually check the electrical connection state, that is, the continuity state, between each contact and each wire. Have difficulty.

In addition, since a corresponding number of wires are connected to multiple contacts at the same time in one process, when manufacturing various types of pressure-welding electrical harnesses with different connection forms using an automatic pressure-welding machine, there are many pressure-welding connectors. If there are a large number of contacts at a pole, and for some unforeseen reason the corresponding number of wires are not supplied and pressure welding is performed, this may cause inconveniences such as wires not being connected to some of the contacts. There's a problem.

The present invention solves these problems by:
It is an object of the present invention to provide a continuity check device that can reliably check the electrical connection between each contact of a pressure welding connector and each wire of a corresponding wire group at the same time as the pressure welding connection.

That is, the present invention provides a pressure welding device having a pressure welding punch and a pressure welding die that are arranged vertically opposite to each other with a wire transfer path in between, a connector supply device that supplies a pressure welding connector to the pressure welding die, and a connector supply device that supplies a pressure welding connector continuously from a large number of wire supply reels. an automatic pressure welding machine equipped with a wire feeding device that intermittently feeds a predetermined group of wires corresponding to the pressure welding connector out of a group of wires sent out to the pressure welding device by a predetermined length at a time, the pressure welding die is raised and lowered; a plurality of continuity check probes built into a slider that connects the wire, and a continuity check circuit that connects the probes and an end of the wire wound on the wire supply reel, the wire being pressure-connected to the contact of the pressure-connecting connector. When connected, the probes individually contact the contacts to close the continuity check circuit, and after the wires are connected by pressure contact, the probes are separated from the contacts to open the continuity check circuit. It is characterized by

Further, the second aspect of the present invention provides a connection between the continuity check probe and the end of each electric wire constituting the continuous body of the pressure-contact type electric harness that is connected by pressure-contact and then wound around a winding device. It is characterized by a continuity check circuit.

Therefore, according to the present invention, it is possible to reliably check whether the electrical connection between each contact of the pressure welding connector and each wire of the corresponding wire group is good or bad at the same time as the pressure welding connection, thereby achieving a highly reliable pressure welding type. You will get an electrical harness. In particular, since the continuity check circuit was constructed by inserting a continuity check probe into the pressure welding connector and making it contact with each contact, each probe was tested under conditions close to the actual usage condition in which a male pin was inserted into the pressure welding connector and brought into contact with the contact. It is possible to check the electrical connection state between the contact and each electric wire, making it possible to conduct a more reliable continuity check. Moreover, since the continuity check is performed at the same time as the pressure welding connection, there is no need for a separate process for the continuity check, which increases work efficiency and
The versatility of work in the next process increases.

Furthermore, according to the second aspect of the present invention, since each wire of the wire group constituting the continuum of the pressure-connected electrical harness obtained by pressure-connecting is used for the continuity check circuit, The continuous body can be wound around a winding device while checking for electrical connection defects in the case of disconnection for some reason, and a highly reliable pressure-welded electric harness continuous body can be obtained.

Embodiments of the present invention will be described below based on the drawings. FIGS. 1 and 2 schematically show an automatic pressure welding machine for manufacturing a continuous body of a pressure welded electrical harness.
The automatic pressure welding machine includes a pressure welding device 11 that pressure-connects a pressure welding connector 3 to a predetermined wire group 2A supplied along a wire transfer path W extending substantially horizontally, and a pressure welding device 11 that supplies a predetermined pressure welding connector 3 to the pressure welding device 11. selects the predetermined wire group 2A to be connected to the pressure welding connector 3 from among the wire groups 2 continuously fed out from the connector sorting and feeding device 12 (see FIG. 2) and a large number of wire supply reels 4... A wire sorting and feeding device 13 that allows wires to be fed to the pressure welding device 11 and the pressure welding device 11
Wire group 2A connected to insulation displacement connector 3 at
a wire length measurement and transfer device 14 that pinches and intermittently transfers a predetermined length along the wire transfer path W together with the pressure welding connector 3; and a long continuous group of wires transferred by the wire length measurement and transfer device 14. 2A is provided with a winding device 15 that sequentially winds up a continuous body 7 of a press-contact type electrical harness to which a large number of press-contact connectors 3 are connected at predetermined intervals. Note that the continuous body 7 may be collected and stored in the tray 16 without being wound around the winding device 15 . Furthermore, as shown by the imaginary line in FIG. 2, the continuous body 7 wound by the winding device 15 is fed to the binding device 8 and the marking device 9.
After the wire group 2A is tied at an appropriate position and an appropriate symbol or product number is printed on the binding tape, it may be used again by being wound around the winding device 15'.

Next, each of the above device parts will be explained.

Pressure Welding Device As shown in FIGS. 1 and 3, the pressure welding device 11 includes a pressure welding punch 21 and a pressure welding die 22 that are vertically disposed opposite to each other with a wire transfer path W in between.

The pressure punch 21 is mounted on a slider 24 that is raised and lowered by an air cylinder 23, and is lowered from the raised position shown in FIG. 3 to the pressure preparation position shown in FIG. 4 and the pressure contact position shown in FIG. Slider 2
4, a wire cutting blade 26 that is moved up and down by an air cylinder 25 assembled to the slider 24;
is installed. As will be described later, the cutting blade 26 is operated at the fourth position at the start of the welding operation and at the end of the welding operation.
In the pressure welding preparation position shown in the figure, it operates as shown by the imaginary line to cut the end of the wire group 2 or 2A.

The pressure welding die 22 is attached to a second slider 30 that is moved up and down by a second air cylinder 29 assembled to a first slider 28 that is moved up and down by a first air cylinder 27. First, the first air cylinder 27 is activated and the pressure welding die is 22 to the first slider 2
8 and is raised from the lowered position shown in FIG. 3 to the pressure welding preparation position shown in FIG. 4, and then the second air cylinder 29 is activated to raise it to the pressure welding position shown in FIG. 5.

The pressure welding die 22 consists of a fixed die block 22a fixed to the second slider 30, and a movable die block 22b located opposite to the block 22a and attached so as to be tiltable laterally outward using a pivot pin 31 as a fulcrum. ing. The movable die block 2
2b is actuated by an air cylinder 32 assembled to the second slider 30, as shown in FIGS. 1 and 3. The air cylinder 32 is constantly movable by the pressure of an internal spring 33.
2b is urged to the closed position shown by the solid line in FIG. 3, and the press-fitting connector 3 inserted between both blocks 22a and 22b and supplied to a predetermined position is pressed against the fixed die block 22a side by the movable die block 22b. It has a structure in which air pressure is used only when moving the movable die block 22b to the open position shown by the imaginary line in FIG. 3.

Further, the second slider 30 is equipped with a continuity check probe 34 and an air cylinder 35 for operating the probe 34. The continuity check probe 34 is connected to the contact 3 of the pressure welding connector 3.
a, and rises during the pressure welding connection shown in FIG.
It is designed to come into engagement contact with. The continuity check probe 34 is used to check whether each wire 2A _i to 2A _o of the wire group 2A and each contact 3a of the pressure welding connector 3 are securely connected during pressure welding work, as shown in FIG. A power source 36 is connected between the ends of the wires 2A _i to 2A _o wound around the wire supply reel 4 supplying the predetermined wire group 2A and each continuity check probe 34 corresponding thereto.
A continuity check circuit 38 is constructed with a continuity detector 37 interposed therebetween. The continuity check circuit 38
is connected to the wire supply reel 4 via the slip ring 39.
It is electrically connected to the ends of the electric wires 2A _i to 2A _o wound around the wires 2A i to 2A o. An alarm lamp, a buzzer, etc. are used as the continuity detector 37, and the operation of the entire machine is stopped in response to the operation of the continuity detector 37.

Connector sorting and feeding device As shown in Figure 2, the connector sorting and feeding device 1
2 is a chute provided with two parts feeders 41 and 42 that feed the pressure welding connectors 3 in a fixed posture, and a plurality of guide grooves 44 that distinguish and feed several types of pressure welding connectors 3 with different numbers of poles. 43, a transfer chute 45 for transferring the pressure welding connector 3 from the parts feeder 41 or 42 to the guide groove 44 of either of the chute 43, and the pressure welding connector 3 fed out from the lower end of the guide groove 44 of the chute 43 in one pressure welding process. One or several pressure connectors 3 to be pressure-connected to the wire group 2A are separated and connected to the pressure-welding device 11.
and a distribution chute 46 for supplying the pressure welding die 22 to a predetermined position.

In the parts feeders 41 and 42, the mounting base 47 for fixing them is movable laterally, and when the pressure contact connector 3 is being fed from one of the parts feeders 41 through the transfer chute 45 to a predetermined guide groove 44 of the chute 43. In the other parts feeder 42, the pressure welding connector 3 to be used for the next pressure welding operation is stored and prepared, and the mounting base 47 is moved laterally to transfer the outlet of the parts feeder 42 to the transfer chute 4.
5, the next press-connecting connector 3 can be immediately fed.

The chute 43 is also configured to be able to move laterally, and the chute 43 is stopped at a position where the upper end of the desired guide groove 44 faces the transfer chute 45 and the lower end of the guide groove 44 faces the distribution chute 46, and in this state, the parts feeder 41 or 42, the pressure welding connector 3 is transferred from the transfer chute 45 to the guide groove 4.
4 to a distribution chute 46. Pressure-connecting connectors 3 having different numbers of poles are housed in advance in each guide groove 44, and the guide groove 44 is selected by detecting the number of poles of the connectors to be press-connected using a phototube or other sensor.

Wire Sorting and Feeding Device The wire sorting and feeding device 13, as shown in FIGS.
A chuck 91 that guides and feeds the wire group 2 supplied through the wire transfer path W along the wire transfer path W, and clamps and fixes the wire group 2; A predetermined group of electric wires 2A connected to 3 is released, and a selection chuck 92 that clamps and fixes the remaining group of electric wires, and a pressure welding device 1
1, and the electric wire group 2
and a wire guide 93 that guides the wire along the wire transfer path W to the pressure contact position.

The chuck 91, the sorting chuck 92, and the wire guide 93 have guide grooves 94, 95, and 9 in numbers corresponding to the number of wires constituting the wire group 2, respectively.
6 extend along the wire transfer path W and are arranged at regular intervals in the lateral direction (this interval is set equal to the interval between the insulation displacement slots of the contacts 3a accommodated in the insulation displacement connector 3). Each wire of the wire group 2 is supplied to the pressure welding device 11 through corresponding guide grooves 94, 95 and 96, respectively.

The chuck 91 and the wire guide 93 are connected by two connecting rods 97, and both are connected by an air cylinder 98.
It is configured such that it can be moved slightly in the direction of the wire transfer path W by the wire transfer path W. Also, sorting check 9
2 is configured so that it can be moved slightly in the direction of the wire transfer path W by an air cylinder 99 attached to the chuck 91. Therefore, the selection chuck 92 is also connected to the chuck 91 by the air cylinder 98.
It is moved in the direction of the wire transfer path W together with the electric wire transfer path W.

The chuck 91 has a holding plate 100 that presses and holds the entire wire group 2 guided and fed through the guide groove 94, and the holding plate 100 is attached to the air cylinder 1.
01 causes it to move up and down.

As shown in FIG. 1, the sorting chuck 92 has a number of sorting blades 102 corresponding to the number of guide grooves 95.
and a grooved drum 10 for actuating the blade 102.
3. The sorting blade 102 is formed in an L-shape, and is provided with a wire holding claw 104 at one end and an engaging protrusion 105 at the other end. Each sorting blade 102 is attached at its corner to be able to swing independently, with its corner supported by a support shaft 106 horizontally suspended on the chuck body. The wire holding claw 1 is automatically biased against the surface.
04 so as to protrude into the guide groove 95. When the engaging protrusion 105 engages a cam groove (not shown) provided on the outer circumferential surface of the grooved drum 103, the electric group presser pawl 104 protrudes into the guide groove 95, and guides through the guide groove 95. Press the wire to be fed to stop feeding. Therefore, among the wire groups 2 guided and fed through all the guide grooves 95, the remaining wires excluding the predetermined wire group 2A to be supplied to the pressure welding device 11 are removed by the holding claw 104 of the sorting blade 102.
When pressed, only the predetermined group of wires 2A can be fed, and as will be described later, the selection chuck 91 and the movable chuck 1 of the wire length measuring and transferring device 14
15, only a predetermined wire group 2A is supplied to the pressure welding device 11.

Since the predetermined wire group 2A supplied to the pressure welding device 11 is related to the number of poles and the number of the pressure welding connectors 3 to be connected, the cam grooves are provided on the outer peripheral surface of the grooved drum 103 with different phases, and the wires are connected. It is configured to be rotated and displaced in correspondence with the pressure contact connector 3, so that the engagement protrusions 105 of the predetermined sorting blades 102 are respectively engaged with the cam grooves.

Wire Length Measuring and Transfer Device As shown in FIGS. 1 and 2, the wire length measurement and transfer device 14 has a movable chuck 115 that moves back and forth along the wire transfer path W. It is configured to hold 2A.

The movable chuck 115 is attached via an arm 116 to a chain 119 suspended between a driving wheel 117 and a driven wheel 118, and is connected to the DC motor 1.
By rotating the drive wheel 117 in the forward and reverse directions at 20, the drive wheel 117 is moved back and forth along the wire transfer path W via the chain 119 and stopped at an arbitrary position, and the amount of movement of the movable chuck 115 and The number of reciprocations is set, and the length of the wire group 2A to be transferred is measured. In the figure, 121 is an auxiliary chuck that opens and closes in a fixed position.

Next, the operation will be explained.

3 to 5 and 7 show the pressure welding process of the automatic pressure welding machine having the above structure.
At the start of the crimping operation, the wire group 2 guided to the crimping device 11 through the guide grooves 94, 95, and 96 of the chuck 91, the sorting chuck 92, and the wire guide 93 is passed through the crimping punch 21 and the crimping die shown in FIG. At the pressure welding preparation position where the wires 22 are close to each other, the tip portions are trimmed by the wire cutting blade 26 pushed down by the air cylinder 25 (see FIG. 7a). Next, the air cylinder 101 operates,
While pressing the entire wire group 2 with the holding plate 100,
The chuck 91, the sorting chuck 92, and the wire guide 93 are moved slightly backward along the wire transfer path W by the air cylinder 98, and the ends of the trimmed wire group 2 are pulled back to the pressure welding position. Subsequently, the sorting blade 102 of the sorting chuck 92 is actuated by the grooved drum 103 as described above to select a predetermined group of wires 2 to be connected to the insulation displacement connector 3.
The remaining electric wires except for A are pressed with the presser claw 104 to stop feeding. In this state, the selection chuck 92 is further moved back by the air cylinder 99. As a result, of the wire group 2, only the wires that are pressed and clamped in the state where feeding is stopped are further retreated and removed from the pressure contact position, and only the predetermined wire group 2A is arranged in the pressure contact position. During this time, the cutting blade 26 returns to its original raised position (see Figure 7b). Thereafter, the pressure welding die 22 of the pressure welding device 11 rises to the position shown in FIG.
is connected to the insulation displacement connector 3 (seventh
(see figure c).

As mentioned above, each electric wire 2A _i ~2 of the electric wire group 2A
At the same time that A _o is connected to each contact 3a of the insulation displacement connector 3, the continuity check probe 3
4 is raised by the air cylinder 35, enters the fitting portion 3b with the male pin of the pressure welding connector 3, and comes into contact with the contact 3a. When each electric wire 2A _i to 2A _o and each contact 3a are reliably electrically connected, each electric wire 2A _i to 2A _o connected to the contact 3a and the slip ring 39 are connected to each other, as shown in FIG. Continuity check circuit 3 through
8 becomes a closed circuit, the continuity detector 37 operates, and it is confirmed that the pressure connection is good. It should be noted that if the pressure welding connection is defective or if a predetermined number of electric wires are not being supplied, the continuity detector 37 will not operate, so that the state of the pressure welding connection can be quickly and reliably checked. If the pressure connection is defective, a continuity detector 37 such as a lamp or buzzer is activated to immediately stop the operation of the entire machine. In addition, since the probe 34 is inserted into the male pin fitting part 3b of the connector 3 and configured to make electrical contact with the contact 3a, highly reliable detection suitable for actual use can be performed.

When the pressure welding connector 3 is connected to the predetermined wire group 2A and the pressure welding punch 21 and the pressure welding die 22 are vertically separated from each other and returned to the position shown in FIG. 3, the movable chuck 115 moves to the pressure welding position and the pressure welding connector 3 is connected to the wire group 2A (7th
(see figure d). At this time, the air cylinder 101 of the chuck 91 is activated to release the wire group 2 that was pressed and clamped by the holding plate 100 during the pressure welding process. In this state, the movable chuck 115 moves forward along the wire transfer path W, pulls out the wire group 2A together with the pressure welding connector 3 from the pressure welding device 11 by a predetermined length, and
Stops in place. After that, check 9 again.
The air cylinder 101 of No. 1 operates and presses the presser plate 100.
By pressing and holding the wire group 2A, the chuck 91 and the movable chuck 115 clamp the wire group 2A in a tensioned state, and then the pressure welding device 11 is activated.
At the same time as the next pressure-connecting connector 3 is pressure-connected to the wire group 2A, the continuity check probe 34 rises and comes into contact with each contact 3a. (See Figure 7e).

Thereafter, the same pressure welding operation as described above is repeated to obtain a continuous body 3 of pressure welding type electric harness in which a large number of pressure welding connectors 3 are connected to a long continuous wire group 2A at predetermined intervals.

In addition, if the wire cutting blade 26 is operated appropriately, a pressure welding type electrical harness in which a plurality of pressure welding connectors 3 are connected to both ends of the wire group 2A of a predetermined length and at an intermediate position therebetween, or a pressure welding type electrical harness in which a plurality of pressure welding connectors 3 are connected to both ends of the wire group 2A of a predetermined length and a pressure welding connector only at both ends of the wire group 2A can be created. It is also possible to obtain pressure contact type electrical harnesses with various connection forms, such as a both end pressure contact type electrical harness in which the wire group 2A is connected to the pressure contact connector 3 on one side, and the other end is a free end. It is.

FIG. 8 shows a second embodiment of the present invention, in which the continuity check circuit 38 is connected to the continuous body 7 of the pressure-contact type electrical harness wound around the winding device 15.
The ends of each of the electric wires 2A _i to 2A _o are connected to the continuity check probe 34 via a slip ring 39.

With this configuration, at the same time as the continuity check at the time of pressure welding connection, if some or all of the electric wires 2A _i to 2A _o constituting the continuous body 7 wound around the winding device 15 are cut due to unexpected reasons, Since it is also possible to check for electrical connection defects in the wires, etc., it is possible to obtain a press-fit type electric harness continuum 7 with even higher reliability.

[Brief explanation of drawings]

The drawings illustrate embodiments of the present invention, and FIG. 1 is a schematic front view of an automatic pressure welding machine equipped with a continuity check device according to the present invention, FIG. 2 is a plan view of the same, and FIG. Enlarged vertical front view showing main parts;
Figures 4 and 5 are enlarged longitudinal sectional front views showing the operating state of the main parts, Figure 6 is an explanation of the continuity check device, Figure 7 is an illustration of the pressure welding process, and Figure 8 is an illustration of the
FIG. 3 is a schematic explanatory diagram of a continuity check device according to the second invention. 2...Electric wire group, 2A...Predetermined electric wire group, 3...
Pressure welding connector, 3a... Contact, 3b... Fitting portion with male pin, 4... Wire supply reel, 7...
Continuum of press-contact type electrical harness, 13... Wire sorting and feeding device, 14... Wire length measuring and transferring device, 21...
Pressure welding punch, 22... Pressure welding die, 34... Continuity check probe, 36... Power source, 37... Continuity detector, 38... Continuity check circuit, 39... Slip ring, 92... Selection check, 115...
...Movable chuck.

Claims (1)

[Scope of Claims] 1. A pressure welding device having a pressure welding punch and a pressure welding die that are arranged vertically opposite to each other with a wire transfer path in between, a connector supply device that supplies a pressure welding connector to the pressure welding die, and a continuous supply from a large number of wire supply reels. and an electric wire feeding device that intermittently feeds a predetermined group of wires corresponding to the pressure welding connector out of a group of wires sent out to the pressure welding device by a predetermined length at a time. It has a plurality of continuity check probes built into a slider that is moved up and down, and a continuity check circuit that connects the probes and an end of the wire wound on the wire supply reel, and the wire is connected to the contact of the pressure welding connector. The probe is configured to individually contact the contacts to close the continuity check circuit when the electric wire is connected by pressure contact, and the probe is separated from the contact to open the continuity check circuit after the wire is connected by pressure contact. Continuity check device for automatic pressure welding machines. 2. A pressure welding device having a pressure welding punch and a pressure welding die that are arranged vertically opposite to each other across a wire transfer path, a connector supply device that supplies a pressure welding connector to the pressure welding die, and a group of electric wires that are continuously fed out from a large number of wire supply reels. In an automatic pressure welding machine equipped with a wire feeding device that intermittently feeds a predetermined group of electric wires corresponding to the pressure welding connector to the pressure welding device in predetermined length increments, A winding device for winding a continuous electrical harness obtained by connecting a large number of pressure welding connectors at predetermined intervals; a plurality of continuity check probes incorporated in a slider that raises and lowers the pressure welding die; and the probe. and a continuity check circuit that connects each wire end of the continuum of the electrical harness, and the probe individually contacts the contacts at the same time that the wires are pressure-connected to the contacts of the pressure-connecting connector. A continuity check device for an automatic pressure welding machine, wherein the continuity check circuit is closed by the electric wire, and the probe is separated from the contact to open the continuity check circuit after the electric wire is connected by pressure welding.