JP2534164B2 - Automatic pressure welding machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic crimping machine for manufacturing an electric harness in which crimping connectors are connected to both ends of an electric wire group having a predetermined length.

[0002]

2. Description of the Related Art The electric harnesses described above are roughly classified into two types, one in which the connectors connected to both ends of the electric wire group are in the same posture and the other in which the connectors are inverted by 180 degrees. An automatic pressure welding machine capable of manufacturing various kinds of electric harnesses by one machine is disclosed in, for example, Japanese Patent Laid-Open No. 63-1
It is disclosed in Japanese Patent Publication No. 98274. In this automatic crimping machine, the crimping device for connecting the crimping connector to the electric wire group has three sets of crimping punches and crimping dies, of which one crimping punch and crimping die are arranged upside down. Therefore, in order to supply the press-connecting connectors to the three press-connecting dies, three connector supplying devices are required.
Since one connector supply device is in a stopped state during the operation of the machine, the operating rate is low, which is disadvantageous from the economical point of view.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to supply a single connector supply device to two pressure contact dies with pressure contact connectors. It is to provide a multi-function type automatic crimping machine which can be utilized to cope with two different types of harnesses.

[0004]

In order to achieve the above object, according to the present invention, a pressure welding device for connecting a pressure welding connector to a wire group is arranged along a wire transfer passage at a constant interval. In an automatic crimping machine having a pair of crimping punches and crimping dies, the wire cutting blade is arranged between the first crimping punch and crimping die and the second crimping punch and crimping die, while the third crimping punch and crimping die are provided. The press contact punch and the press contact die are arranged upside down with respect to the second press contact punch and the press contact die, and the chute is attached to the chute of the connector supply device for supplying the press contact connector to the second press contact die. It is characterized in that a rotation assist chute configured to invert the pressure contact connector supplied through the through 180 degrees and feed the third die to the third die.

[0005]

With the above structure, the first and second pressure welding devices are provided.
With the use of the pressure contact punch and the pressure contact die, it is possible to manufacture an electric harness in which the connectors connected to both ends of a wire group of a predetermined length have the same posture, while the first and third pressure contact punches and the pressure contact die are used. For example, it is possible to manufacture an electric harness (reversal harness) in which the connectors connected to both ends of the electric wire group of a predetermined length are reversed by 180 degrees.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an outline of an automatic pressure welding machine according to the present invention, in which a wire feeding device 10 for continuously feeding a wire group 2 arranged in a horizontal direction along a wire transfer passage W extending in a substantially horizontal direction. A press-connecting device 11 for simultaneously connecting two press-connecting connectors 3A, 3B (see FIG. 7) to a predetermined electric wire group 2 to be supplied, a connector supplying device 12 for supplying the press-connecting connector to the press-connecting device 11, and a wire transfer. A movable chuck 13 which is arranged so as to be capable of reciprocating along the passage W, holds the electric wire group 2 to which one press contact connector 3B is connected by the press contact device 11, and transfers the electric wire group 2 along the electric wire transfer passage W for a predetermined length. Is equipped with. The movable chuck 13 is reciprocally moved along the electric wire transfer passage W by the drive chain 14.

The electric wire supply device 10 supplies the electric wire group 2 continuously fed from a large number of unillustrated reels along the electric wire transfer passage W through the guide roller 4, and the pressure contact connector 3 of the electric wire group 2 is supplied. A predetermined wire group corresponding to the number of poles is fed to the pressure welding device 11 through the wire guides 5 and 6. The electric wire guide 5 has an electric wire pressing chuck 7 at the inlet end, and is moved by two air cylinders 8 and 9 along the electric wire transfer passage W in two steps, that is, by the distances L1 and L2 shown in FIGS. It is designed to be used. This is related to the pressure welding device 11 described later,
It is a means provided for positioning the cut end of the wire group 2 at a predetermined pressure contact position. The electric wire guide 6 is attached so as to be vertically swingable around a support pin 6a and is pulled back to a fixed position by a return spring 6b.

The pressure welding device 11 comprises three sets of pressure welding punches 21 and 2 arranged along the electric wire transfer passage W at regular intervals.
2, 23 and pressure contact dies 24, 25, 26.

First press-contact punch 21 and press-contact die 24
The second press-contact punch 22 and the press-contact die 25 are vertically arranged with the electric wire transfer passage W interposed therebetween. The pressure contact punches 21 and 22 are attached to the upper die slider 27, and the pressure contact dies 24 and 25 are integrally formed and attached to the lower die slider 28. In addition, the double press punch 21,
An electric wire cutting blade 29 is arranged in the middle of 22. The wire cutting blade 29 operates independently of the pressure contact punches 21 and 22 by an air cylinder 31 assembled to the upper die cylinder 27, and cooperates with a cutting die 30 formed between the pressure contact dies 24 and 25. Then, the electric wire group 2A having a predetermined length is cut.

On the other hand, the third pressure contact punch 23 and the pressure contact die 26 are arranged so that the pressure contact die 26 is positioned on the upper side and the pressure contact punch 23 is positioned on the lower side with the wire transfer passage W interposed therebetween. The pressure contact die 26 is attached to the upper die slider 27 so as to support the pressure contact connector 3 in an upside down posture with respect to the pressure contact dies 24 and 25. On the other hand, the press punch 23 is fixed to a slider 32 attached to the lower die slider 28 so as to be vertically movable.
The air cylinder 33 attached to the above can be moved up and down.

On the open side of each pressure contact die 24, 25, 26, there is provided a connector retainer 34 for holding the pressure contact connector 3A or 3B supplied to the pressure contact die at a fixed position. Further, an electric wire chuck 35 for guiding and holding the electric wire group 2A at the time of pressure contact connection is arranged adjacent to the first pressure contact punch 21 and the third pressure contact punch 23.

The upper slider 27 is moved up and down by an air cylinder 36, and is lowered to a press-contact work position. On the other hand, the lower die slider 28 can be moved up and down in two steps by the two air cylinders 37 and 38. First, the air cylinder 37 is activated to raise the lower die slider 28 to the press contact preparation position, and then, The air cylinder 38 operates to push up the lower die slider 28 to the press work position.

FIG. 2 is a plan view showing the outline of the connector supply device 12, and the connector supply device 12 is arranged in the direction perpendicular to the plane of FIG.

The connector supply device 12 includes two parts feeders 41 and 42 and each parts feeder 41 and 42.
The press-connecting connector 3A fed by the parts feeder 41 is supplied to the first press-contact die 24 through the chute 43 and fed by the parts feeder 42. The connector 3B includes a chute 44 and a rotation assist chute 4 described later.
It is supplied to the second press contact die 25 through 5.

The rotation assist chute 45 is provided for reversing the pressure contact connector 3B supplied through the chute 44 by 180 degrees and feeding it to the third pressure contact die 26. Hereinafter, description will be made with reference to FIGS. 3 to 6.

FIG. 3 shows an inversion moving device 46 of the rotation assist chute 45. The reversing moving device 46 includes a mounting base 47, a movable support base 49 mounted on the mounting base 47 via guide posts 48, 48 so as to be movable up and down, and a movable support base 49 fixed to the mounting base 47. An air cylinder 50 for vertically moving the bearing, a bearing base 51 slidably mounted on the movable support base 49 in a direction parallel to the electric wire transfer passage W,
An air cylinder 52 for reciprocating the glaze receiving base 51, and a rotating shaft 54 disposed in the bearing base 51 in parallel with the electric wire transfer passage W via bearings 53, 53 and rotatably supported.
And a rotary drive means 55 such as a rotary actuator that is fixed to the bearing base 51 and rotates the rotary shaft 54. The rotation assist chute 45 is fixed to the tip of the rotary shaft 54. The rotation assist chute 45 has a pressing plate 56 that is biased by a spring 57,
7 is pushed up by an air cylinder or the like (not shown), the pressure contact connector 3B supplied through the chute 44 shown in FIG.
When a predetermined number of pressure contact connectors 3B are supplied into the rotation assist chute, the pushing action by the air cylinder is released, and the pressure plate 56 urged by the spring 57 causes the pressure contact connectors 3B to rotate. It is designed to be held at 45.

By the reversing moving device 46 having the above-mentioned configuration, the third
In order to supply the press-connecting connector 3B to the press-connecting die 26, the air cylinder 52 is actuated to move the auxiliary rotation chute 45 together with the bearing stand 51 backward in parallel with the wire transfer passage W as shown in FIG. Let This moving distance is equal to the distance between the second pressure contact die 25 and the third pressure contact die 26 along the electric wire transfer passage W, and is the distance (L2 to L shown in FIGS. 1 and 7).
Equal to 1). Here, L1 indicates the distance for pulling back the cut end of the wire group 2A cut by the cutting blade 29 to the pressure contact position by the second pressure contact punch 22, and L2 indicates the wire group 2A.
3 shows the distance for pulling back the cut end portion to the pressure contact position by the third pressure contact punch 23.

Next, as shown in FIG. 5, the rotation driving means 5
5 operates to rotate the rotary shaft 54 by 180 degrees. In conjunction with this, the rotation assist chute 45 is also inverted 180 degrees, so that the press-connecting connector 3B accommodated and held is in a posture in which it is vertically inverted. Then, as shown in FIG.
Is activated to raise the movable support base 49. In conjunction with this, the rotation assist chute 45 rises, and the third press contact die 26
Matches with. In this state, the pressure contact connector 3B held in the rotation assist chute 45 is pushed out by a pusher (not shown) and is fed to the third pressure contact die 26.

The production of the electric harness by the automatic pressure welding machine having the above-mentioned construction is performed by using the first pressure contact punch 21, the pressure contact die 24, the second pressure contact punch 22 and the pressure contact die 25, and the first pressure contact punch 21. And 2 when using the pressure contact die 24, the third pressure contact punch 23 and the pressure contact die 26.
There are two harness forms.

In the former case, the rotation assist chute 45 is stopped at the position shown in FIG.
The press-connecting connector 3B supplied through 4 is supplied to the second press-connecting die 25. On the other hand, as shown in FIG.
The cut end of the electric wire group 2 cut by 9 is pulled back by the distance L1 and connected to the connector 3B by the second press contact punch 22. The other end of the electric wire group 2A pulled out by a predetermined length is connected to the connector 3A supplied to the first press-contact die 24 by the first press-contact punch 21, and as shown in FIG. Electric harness (1-N harness) in which the press-connecting connector 3A and the press-connecting connector 3B are connected to both ends of the electric wire group 2A in the same posture
61 is obtained.

On the other hand, in the latter case, as described with reference to FIGS. 3 to 6, the press contact connector 3B supplied through the shute 44 is reversed by the rotation assist chute 45 and supplied to the third press contact die 26. As shown in FIG. 7, the cut end of the wire group 2 cut by the cutting blade 29 is pulled back by the distance L2, and is connected to the connector 3B by the third press contact punch 23, and at the same time, the connector 3B is connected to one end in the previous step. The other end of the electric wire group 2A which is held by the movable chuck 13 and pulled out by a predetermined length is connected to the connector 3A supplied to the first press-contact die 24 by the first press-contact punch 21. As shown in FIG. 9, an electric harness (1-1 harness) 62 is obtained in which the press-connecting connector 3A and the press-connecting connector 3B are connected to both ends of the electric wire group 2A having a predetermined length in a posture inverted by 180 degrees.

[0023]

As described above, according to the present invention,
In an automatic crimping machine capable of manufacturing two types of electric harnesses having different forms by one unit, a chute of a connector feeding device for feeding a crimping connector to a second crimping die is provided with 180 crimping connectors supplied through the chute. Since the rotation assist chute configured to invert and feed to the third press contact die is connected, one connector supply device can be utilized for two press contact dies, and the connector supply device is not wasted. Two types of electric harnesses having different shapes can be efficiently manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a schematic front view of an automatic pressure welding machine according to the present invention.

FIG. 2 is a schematic plan view of the connector supply device.

3 to 6 are front views showing an inversion moving device of the rotation assist chute and an operation sequence thereof.

FIG. 7 is an explanatory view showing the same pressure contact step.

FIG. 8 is a side view of an electric harness manufactured by the automatic crimping machine of the present invention.

FIG. 9 is a side view of another electric harness manufactured by the automatic crimping machine of the present invention.

[Explanation of symbols]

 2 wire group 2A wire group cut to a predetermined length 3A, 3B pressure contact connector 10 wire supply device 11 pressure contact device 12 connector supply device 13 movable chuck 21 first pressure contact punch 22 second pressure contact punch 23 third pressure contact punch 24 1st press contact die 25 2nd press contact die 26 3rd press contact die 29 Electric wire cutting blade 41,42 Parts feeder 43,44 Chute 45 Rotation auxiliary chute 46 Inversion movement device

Claims (1)

(57) [Claims] 1. An electric wire supply device for continuously supplying an electric wire group arranged in a horizontal direction along an electric wire transfer passage extending substantially horizontally, and a wire supply device provided vertically opposite to each other with the electric wire transfer passage interposed therebetween.
Are arranged at regular intervals along the electric wire transfer passage.
It has 3 sets of pressure contact punch and pressure contact die, one of which is
The pressure contact punch and pressure contact die are arranged upside down.
A pressure welding device for connecting a pressure welding connector to the electric wire group,
Provided close to the crimping device and operate independently
A wire cutting blade, a connector supply device that supplies a pressure contact connector to the pressure contact die, and a wire group that is disposed so as to be capable of reciprocating along the wire transfer passage and that is connected to the pressure contact connector and has a predetermined length. A movable chuck that moves along the electric wire transfer path is provided, and two types of electric handles having different configurations are provided.
An automatic pressure welding machine capable of manufacturing a furnace , wherein the wire cutting blade is disposed between the first pressure welding punch and the pressure welding die and the second pressure welding punch and the pressure welding die of the pressure welding device. Of the pressure contact punch and the pressure contact die are arranged upside down with respect to the second pressure contact punch and the pressure contact die, and a connector for supplying a pressure contact connector to the second pressure contact die is provided.
Supplied to the chute of the feeder through the chute
Invert the press contact connector by 180 degrees and move the third press contact
A rotation assist chute configured to feed
An automatic crimping machine characterized by being installed.