JPH0234282A - Manufacture of welded terminal and its manufacturing device - Google Patents

Abstract

PURPOSE:To improve manufacturing efficiency of terminals by providing a movable arm having a chuck pawl and attracting rivets and the terminals supplied separately to the chuck pawl and then, turning the movable arm to perform welding. CONSTITUTION:The movable arm 6 freely turnable with a rotation axis 7 as a center is set up and the chuck pawl 10 to hold the rivets 1 is arranged to the arm tip. A chuck part 8 of the movable arm 6 is moved up to a rivet supply part 14 and the rivets 1 are held thereby. The chuck part 8 is then moved up to a terminal supply part 16 and the terminals 4 are engaged and inserted in the rivets 1 by the function of a magnet 12. Further, the chuck part 8 is moved to a weld zone of a welding machine 18 by the rotational movement of the movable arm 6 and the rivets 1 and the terminals 4 are welded together. Since the engagement of the terminals 4 and spot welding can be automated fully, manufacturing efficiency of the terminals is improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for efficiently and automatically spot welding terminals and rivets attached to capacitor sealing parts to manufacture welding terminals, and a manufacturing apparatus used therefor. It is related to.

[Conventional technology]

Conventionally, when manufacturing a welding terminal in which the rivet and terminal were integrally welded, the rivet was supported one by one by hand, the rivet foot was inserted into the terminal hole, and then the spot welder was used to weld the terminal between the two poles. spot welding.

In addition to the above-mentioned manual welding method, we also use automatic welding equipment, which combines rivets and terminals using a separate device, transports them to a predetermined location using a conveyor, feeder, etc., and then sets them in a spot welding machine for welding. has been adopted.

[Problem to be solved by the invention]

Among the conventional technologies mentioned above, the former technology is inefficient because everything is done manually until the terminals and rivets are set in the sub-groove welding machine, and the manufacturing cost is further increased due to the rise in labor costs. There is the issue of getting there.

Furthermore, with the latter technology, extra space is required because the riveting joint and terminal are combined separately, and the combination of the rivet and terminal may come off during transport using a conveyor or feeder, which also requires production beyond a certain level. Unable to ensure efficiency.

In any case, the combination of the rivet and terminal is simply by inserting the hole in the terminal into the leg of the riveting throat, so it is easy to remove by the time it is installed in the spot welding machine. The present invention solves the above-mentioned conventional problems and efficiently manufactures welding terminals fully automatically without human intervention. The object of the present invention is to provide a method and an apparatus for manufacturing the same.

[Means to solve the problem]

In order to achieve the above object, in the present invention, first, as a method for manufacturing a welding terminal, a movable arm having a chuck part equipped with a chuck claw capable of attracting a magnetic material by a magnet is rotated, and the welding terminal is supplied from a rivet feeder. After the rivet is gripped by the chuck claw, a terminal made of a magnetic material supplied from a terminal feeder and having a hole that can be inserted into the leg of the rivet is attracted to the chuck claw while being engaged with the leg of the rivet. Then, the movable arm is rotated to a spot welding position to integrally weld the rivet and terminal.

In addition, the manufacturing equipment is provided with a rotatably movable arm having a chuck part equipped with chuck claws that can attract a magnetic material by a magnet, and a rivet is placed at a position corresponding to the chuck part on the rotating surface of this movable arm. A rivet feeder having a supply part, a terminal feeder having a supply part of a terminal made of a magnetic material having a hole to be inserted into the leg of the rivet, and a spot welding machine for integrally welding the rivet and the terminal. We used the method of setting up a .

[For production]

As the movable arm rotates, the chuck claw first grips the rivet and then rotates to a position where the leg fits into the hole in the terminal. When the hole of the terminal is brought close to the rivet foot, the terminal will be attracted by the action of the magnet, and the terminal and rivet will be engaged through the chuck part while the terminal is inserted into the rivet foot. .

Next, the chuck portion is rotated to the spot welding position while keeping the rivet and terminal engaged, and welding is performed.

Also, the chuck part rotates as the movable arm rotates,
The rivet supply part of the rivet feeder, the terminal supply part of the terminal feeder, and both poles of the spot welding machine are located on an arc that follows the rotation of the chuck jaw.
Grasping the lever, securing the terminal, and spot welding are completed with only a series of operations, including rotation of the movable arm.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in more detail with reference to the drawings. FIG. 1 shows a rivet 1, which is composed of a head 2 and a foot 3 in the form of a flat plate. Further, FIG. 2 shows a terminal 4 made of a magnetic material, and a hole 5 having a diameter into which the ribbed throat leg 3 can be inserted is bored.

Next, in Fig. 3, 6 is a movable arm that can freely rotate on a plane using an air cylinder or the like around the rotating shaft 7, and 8 is a chuck part fixed to this movable arm 6, and the tip is normally opened by a spring. A chuck pawl 10 is provided which grips the rivet 1 by inserting the wedge 9 into the rivet. 11. 1 is a support shaft of the chuck jaw 10, and 12 is a magnet provided near the chuck jaw 10.

Further, 13 is a rivet feeder for supplying a large number of rivets 1 one after another, 14 is a rivet supply unit that supplies a rivet throat l to a cha-saw claw 10, and 15 is a rivet feeder that supplies a large number of terminals 4" one after another. Terminal feeder for
Reference numeral 6 designates a terminal supply unit, 17 a provisional guide for sequentially supplying the terminals in an aligned state, and 18 a spot welding machine.

The welding portions of the glue vent supply section 14, terminal supply section 16, and spot welding machine 18 are provided on a circular arc formed by the rotation of the chuck claw 10.

Next, a method for manufacturing a welding terminal using the apparatus of the present invention will be explained. First, the movable arm 6 is rotated to move the chuck part 8 to a position corresponding to the rivet supply part 14 as shown in FIG. Grasp the rivet l. Thereafter, as shown in FIG. 5, the movable arm 6 is rotated to move the chuck section 8 to the terminal supply section 16. Here, since a magnet 12 is provided near the chuck claw 10, if the terminal 4 is supplied within the range where the magnet acts, the terminal hole 5 will fit into the rivet foot 3.
The terminal 4 is attracted to the magnet 12 in the state in which the rivet 1 and the terminal 4 are inserted. Further, the movable arm 6 is rotated again to move the chuck part 8 to the welding part of the spot welding machine 18, and after removing the chuck claw 10 as shown in FIG. The welding terminal is completed by sandwiching the terminal 4 and discharging it.

Note that instead of embedding the magnet 12 near the chuck jaw 10, the chuck jaw 10 itself may be magnetized,
It is also possible to configure the chuck claw 10 to be magnetized by energizing the electromagnetic coil.

Further, as a means for inserting the hole 5 of the terminal into the foot 3 of the rivet, the structure shown in FIG. 7 may be adopted instead of the structure shown in FIG. 5. That is, during standby, the first terminal located in the terminal supply section is fixed with a presser plate 21 by a biasing force such as a spring, and after the chuck section 8 is moved to the terminal supply section 16, the rivet leg 3 is attached to the terminal. The chuck part 8 is lowered so that it can be inserted into the hole 5. Next, lower the chuck part 8 to a certain extent and magnet 1
When terminal 2 approaches a position where terminal 4 can be sufficiently attracted, holding plate 21 is slid by a cam or the like in conjunction with the lowering of chuck portion 8, and the two are brought into engagement. In this way, it is possible to engage the rivet and the terminal more reliably. 4. Furthermore, if a plurality of sets of the above-mentioned manufacturing apparatuses are installed at appropriate intervals, welding terminals can be manufactured more efficiently.

〔Effect of the invention〕

Since the present invention has the above-described configuration, a series of operations of rotating the movable arm grips the rivet, engages the terminal, and
And spot welding can be performed fully automatically, making manufacturing efficiency extremely high.

In addition, when engaging the terminal with the rivet, a magnet is used to attract the terminal, so that the terminal will not easily come off when moving to the next process after being engaged. became.

Furthermore, since the entire process is performed according to the rotation of the movable arm,
It has been possible to provide a method and apparatus for manufacturing a welding terminal that has great effects that could not be expected in the past, such as being able to operate even in a relatively narrow space by appropriately setting the rotation angle.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a rivet, Fig. 2 is a perspective view of a terminal, Fig. 3 is a plan view showing an embodiment of the manufacturing apparatus of the present invention, Fig. 4 is a side view of a beam vent feeder, and Fig. 5 is a perspective view of a terminal. A side view of the terminal feeder, FIG. 6 shows a welding part of a spot welding machine, and FIG. 7 shows another embodiment of FIG. 5. In addition, in the figure 1... Rivet, 5... Hole, 6... Movable plate, 8... Chuck part, 10... Chuck claw, 12...
... Magnet, 13... Rivet feeder, 14.
... Rivet supply section, 15 ... Terminal feeder,
16... Terminal supply section, 18... Spot welding machine. Applicant for the above patent: Eiji Iijima

Claims (1)

[Scope of Claims] 1. Rotate the movable arm 6 having the chuck part 8 equipped with the chuck claw 10 that can attract a magnetic material by the magnet 12, and move the rivet 1 supplied from the rivet feeder 13 to the chuck claw 10. After the terminal 4 is gripped by the terminal feeder 15 and is made of a magnetic material and has a hole 5 that can be inserted into the leg 3 of the rivet, the terminal 4 is attracted to the chuck claw 10 while being engaged with the leg of the rivet. A method for manufacturing a welding terminal, which comprises: thereafter rotating the movable arm 6 to a spot welding position to integrally weld the rivet 1 and the terminal 4. 2. A movable arm 6 having a chuck part 8 equipped with a chuck claw 10 capable of attracting a magnetic material by a magnet 12 is rotatably provided, and the chuck part 6 is rotated on the rotating surface of this movable arm.
a rivet feeder 13 having a rivet supply section 14 at a position corresponding to the rivet feeder 13;
Welding characterized in that it is provided with a terminal feeder 15 having a terminal supply section 16 made of a magnetic material having the following properties, and poles 19 and 20 of a spot welding machine 18 for integrally welding the rivet 1 and the terminal 4. Terminal manufacturing equipment.