JPH0212396B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pressure welding type electrical connector, a so-called pressure welding device for connecting electric wires to a pressure welding connector.

2. Description of the Related Art A pressure welding connector includes a plurality of contacts and an insulating housing having a plurality of cavities in which the contacts are accommodated individually and spaced apart, and a plurality of electric wires are individually connected to one connector. Another major feature is that the insulation coating is connected without stripping.

Connector pressure welding devices for connecting electric wires to this type of pressure welding connector are roughly divided into three types: manual type, semi-automatic type, and fully automatic type, but the present invention provides automatic connector supply and pressure welding connection work. , which relates to improvements to semi-automatic pressure-welding devices that supply electric wires manually.

Problems to be Solved by the Invention Conventional semi-automatic connector pressure welding devices connect multiple wires to one connector in one step, so each wire is held in parallel at a certain interval and connected. A wire guiding and holding device was provided to correspond to the desired contact. However, there is a problem in that the work of inserting a large number of wires into the wire guide and holding device and holding them in an array is troublesome and time-consuming. In particular, workers who are skilled at connecting one electric wire to one crimp terminal, such as those using automatic terminal crimping machines, have been avoided because of their poor work efficiency.

The present invention was made in view of such actual circumstances,
Provided is a connector pressure welding device configured such that the wire guiding and holding device in the semi-automatic pressure welding device as described above is eliminated, and the wires can be manually fed one by one and connected to each contact in the connector in sequence. It's about doing.

Technical Means That is, the connector pressure welding device of the present invention includes a movable holder connected to a ram of a press and moved up and down, a pressure welding power switch attached to the movable holder, and a connector fixed to a die plate of the press. A connector pressure welding device comprising a holding die, a connector supply chute connected to the connector holding die, and a connector feeding means for sequentially moving the pressure welding connectors supplied from the supply chute to the connector holding die to a pressure welding position. The connector feeding means is interlocked with the vertical movement of the pressure welding punch, and engages the pressure welding connector with a partition between cavities that individually accommodate the contacts of the insulating housing at a distance. and one of the contacts
The electric wire is manually fed one by one to a position above the contact in the press-contact position, and is provided with a feed claw that moves it pitch by pitch, and the electric wire is press-connected to the contact using the press-contact punch.

Effects of the Invention In the connector pressure welding device of the present invention, the connector feeding means is linked to the vertical movement of the pressure welding punch,
and a feed pawl that engages with a partition between the cavities in which the contacts of the insulating housing are individually spaced apart and moves the contacts one pitch at a time, and moves the pressure welding connector one pitch at a time to the pressure welding position. Since the wires are manually fed one by one above a certain contact and the pressure welding punch is used to connect the wires to the contact, the work operation is exactly the same as that of a conventional automatic terminal crimping machine. Therefore, it is easy for workers who are skilled in wire connection work using an automatic terminal crimping machine to handle it and has the advantage of being able to work efficiently.

Further, since the pressure welding device of the present invention can be incorporated into the press body of the above-mentioned existing automatic terminal crimping machine, it has great practical effects such as excellent economical efficiency.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. 1 is the main frame of the press, 2 is the base of the main frame, 3 is the press ram, and the main frame 1
It is caused to move up and down by a drive device (not shown) built into the unit. The ram 3 is operated by an operator operating a foot switch.
4 is a die plate fixed to the base 2, 5 is a support frame fixed to the die plate 4, and 6 is a movable holder attached to the support frame 5 so as to be able to slide vertically. It is interlocked with the ram 3 via the ram 3, and moves up and down in interlock with the ram 3.

The press main body having the above structure is the same as an existing automatic terminal crimping machine, and it is desirable to use it in common.

Reference numeral 10 denotes a pressure contact punch, which is attached to the front surface of the movable holder 6 with bolts 11 via a presser ring 12, and whose attachment position can be finely adjusted via a spacer 14 using an adjustment dial 13 provided at the upper end of the movable holder 6. It's becoming like that. This position adjustment mechanism can also utilize a crimping tooth type position adjustment device provided in an existing automatic terminal crimping machine.

Since the movable holder 6 that moves the press punch 10 up and down has some play in the connecting part with the ram 3, the position of the bottom dead center when it is lowered is not constant due to the influence of inertia, and as a result, the press punch 10 There is an inconvenience that the lowering position is not constant. In order to eliminate such inconveniences, positioning means is provided to keep the lowered position of the movable holder 6 constant. The positioning means includes a punch 15 protruding from the lower end of the movable holder 6, and a die plate 4 disposed opposite to the punch 15, as shown in FIG.
It consists of a push-up pin 16 that is vertically movably fitted into a positioning block 17 fixedly fixed to the holder and is biased upward by a spring 18. When the movable holder 6 is lowered, the punch 15 collides with the push-up pin 16. Since the movable holder 6 is relatively pushed up by the push-up pin 16 and comes into close contact with the ram 3, this lowered position is always constant, and as a result, the pressure welding punch 10 is always lowered to a predetermined pressure contact position. There is.

A connector holding die 20 is disposed below the pressure welding punch 10 and fixed on the die plate 4, and has a housing groove 21 for the pressure welding connector 55 on its upper surface. Further, a guide plate 2 covering a part of the housing groove 21 is provided on the upper surface of the connector holding die 20.
2 is disposed, and a protruding guide portion 23 is provided at a portion of the guide plate 22 facing the pressure contact position. Reference numeral 24 denotes a connector holding plate, which is disposed in a notch provided on the front surface of the connector holding die 20 so as to be movable in the front-rear direction via a support pin 25, and is housed in the housing groove 21 by the action of a pressing spring 26. The connector 55 is elastically pressed and held fixed in the vicinity of the press-contact position (see FIG. 3).

Reference numeral 27 denotes a connector supply chute, which extends laterally from the connector holding die 20 and is integrally connected with the connector holding die 20, and has a supply groove 28 on its upper surface that communicates with the connector housing groove 21, and a supply groove 28 that extends along its entire length. It is configured such that a certain number of press-contact connectors 55 can be inserted and loaded through the upper opening opened. A guide plate 29 that partially covers the upper opening of the supply groove 28 is provided on the upper surface of the supply chute 27 . As shown in FIG. 2, the guide plate 29 has elongated holes 30, 3 bored at both ends thereof.
The mounting bolts 31, 31 protruding from the upper surface of the supply chute 27 are loosely fitted into the upper surface of the supply chute 27, and the springs 32, 32 fitted to the mounting bolts 31, 31 press the springs 32, 32 against the upper surface of the supply chute 27. It is fixed and can be displaced rearward when loading the connector 55.

33 is a pusher which is slidably provided along the supply groove 28, and has a tension spring 34 (see Fig. 2).
As a result, the press-contact connectors 55 loaded in the supply grooves 28 are pushed and sequentially supplied to the housing grooves 21 of the connector holding die 20. 35 is a hook for fixing and holding the pusher 33 at the rear end position;
36 is a knob for manually operating the pusher 33.

Reference numeral 40 denotes a connector feeding device, which includes a feeding lever 42 swingably attached to the support frame 5 via a pivot pin 41, and a pin 4 attached to the lower end of the lever 42.
an arm 45 which is swingably connected via 3 and whose tip is biased downward by the action of a spring 44;
and a feed claw 46 attached to the tip of the arm 45.
The feed lever 42 is urged clockwise in FIG. 1 with the pivot pin 41 as a fulcrum by the action of a tension spring 47 connected to the rear end of the arm 45, and the feed claw 46 Pressure connector 5 accommodated and held in accommodation groove 21 of holding die 20
The connector 55 is moved by one pitch of the contacts 56 by engaging with a partition wall 59 between the hollow portions 58 that individually accommodate the contacts 56 of the connector 55 at a distance from each other (see FIG. 4). .

The connector feeding device 40 has a follower 49 that engages with an inclined cam 48 provided on the side surface of the movable holder 6.
An adjustment rod 50 mounted on the upper end of the feed lever 42 abuts against the follower 49. The follower 49 is fitted into a mounting hole 51 provided in the support frame 5 so as to be slidable left and right.

FIG. 1 shows the movable holder 6 in the raised position.
The pressure contact punch 10 is shown in a non-operating state. At the same time as the movable holder 6 descends and presses down the pressure welding punch 10 to the pressure contact position, the follower 49 moves against the cam surface 4.
8 and moves to the right, and in conjunction with this, the arm 45 is pulled by the tension spring 47, and the feed pawl 46 retreats and engages with the partition wall 59 of the adjacent cavity 58 (the fourth (see figure). Next, when the movable holder 6 returns to the raised position, the follower 49 is also returned to the position shown in FIG. 5
The contacts 56 housed in the contacts 8 are moved one pitch to the right in FIG. That is, in conjunction with the vertical movement of the pressure welding punch 10, the pressure welding connector 55 is moved one pitch at a time among the plurality of contacts 56 that are housed individually and spaced apart in the insulating housing 57, and sequentially moves each contact 56. Position it to the pressure welding position.

Therefore, when an operator holds the electric wires 60 one by one and inserts the wires into the pressure welding position with their tips aligned with the guide protrusion 23, and operates the ram 3 using a foot switch (not shown), the pressure welding is performed. punch 1
0 goes up and down by 1, and when it goes down, the electric wire 60
The end portion is press-connected to the contact 56 in the press-connecting position, and when it is raised, the press-connect connector 5 is moved by the feed pawl 46.
5 to the right by one pitch of the contact 56, and the next contact 56 is positioned at the pressure contact position (see FIGS. 4 and 5). Thereafter, the same operations as described above are repeated to connect the electric wires 60 to each contact 56 of the press-contact connector 55, thereby obtaining an electric harness 61 as shown in FIG. 6.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view of a connector pressure welding device according to the present invention, Fig. 2 is a view taken along line 2-2 in Fig. 1, and Fig. 3 is a view taken along line 3-3 in Fig. 2. 4 is an enlarged plan view of the main parts of the connector feeding device, FIG. 5 is a perspective view of the main parts of the pressure welding process, and FIG. 6 is a perspective view of the completed electrical harness. 3... Ram, 4... Die plate, 6... Movable holder, 10... Pressing punch, 20... Connector holding die, 24... Connector holding plate, 27... Connector supply chute, 40... Connector feeding device , 46... Feed claw, 48... Cam, 49... Follower, 55... Pressure connector, 56... Contact, 57... Insulating housing, 58... Vacant part,
59... Bulkhead, 60... Electric wire, 61... Electric harness.

Claims (1)

[Scope of Claims] 1. A movable holder 6 that is connected to the ram 3 of the press and moves up and down, a pressure welding punch 10 attached to the movable holder 6, and a connector holding die fixed to the die plate 4 of the press. 20 and a connector supply chute 2 connected to the connector holding die 20.
7, and a connector feeding means 40 for sequentially moving the pressure-welding connectors 55 supplied from the supply chute 27 to the connector holding die 20 to the pressure-welding position, the connector feeding means 40 comprising: In conjunction with the vertical movement of the pressure welding punch 10, the pressure welding connector 55 is engaged with the partition wall 59 between the hollow portions 58 that accommodate the contacts 56 of the insulating housing 57 separately from each other. It has a feed claw 46 that moves the contact 56 one pitch at a time, and manually supplies the electric wires one by one to the upper position of the contact 56 in the pressure welding position, so that the wire can be connected to the contact 56 by the pressure welding punch 10. Connector pressure welding device configured. 2 the connector holding die 20 is connected to the pressure welding connector 5 supplied through the supply chute 27;
5. The connector pressure welding device according to claim 1, further comprising a holding means for elastically pressing and fixing the connector 5 in a fixed position. 3. The supply chute 27 is arranged so as to extend laterally from the connector holding die 20, and has a structure in which a certain number of press-connecting connectors 55 can be inserted and loaded into a supply passage whose top is open, and Claim 1 or 2 further comprising a pusher 33 that sequentially pushes the loaded pressure-connecting connector 55 into the connector holding die 20.
Connector pressure welding device as described in section.