JPS6120750Y2 - - Google Patents

Description

[Detailed explanation of the invention] Tab terminals used for capacitor parts are manufactured by welding a thin iron lead wire plated with tin to an aluminum round bar, and pressing this round bar into a flat rectangular shape. do.

The lead wire of the finished tab terminal must be of standard length and in a straight line. This is because if a tab terminal that is too long or bent is used for a capacitor, when the capacitor is assembled onto a printed circuit board, it will be difficult to insert the lead wire into the hole in the printed circuit board, resulting in a significant decrease in work efficiency.

The purpose of this invention is to inspect whether the lead wire of a tab terminal is too long or bent, and to remove defective products.

The present invention will be explained based on the embodiment shown in the drawings. Reference numeral 1 denotes a rotary table that rotates intermittently at 1/8 revolutions, and eight clampers A are installed at equal intervals along the circumference of the rotary table.

Each clamp A is composed of a pair of claws 2, 2 and a pressing plate 3 for opening and closing the claws. The pawls 2, 2 are each pivotally connected to a shaft 4, and a spring 5 is interposed between the pawls 2 and 2, thereby springing the pawls in the opening direction. The pressing plate 3 is pivotally connected to a shaft 6, and a spring 7 connected to one end of the pressing plate 3 presses the other end toward the pawl 2.
Close against.

Two actuating rods 8, 8 are each attached to a shaft 9, a roll 10 provided at one end is brought into sliding contact with a cam 11, and a roll 12 at the other end is raised and lowered toward the press plate 3, respectively.

A plunger 13 is inserted through an electromagnet 14, and is moved up and down toward the pressing plate 3 by magnetic force. The electromagnet 14 is fixed to a machine frame (not shown). 15 is a spring for returning the plunger.

Next, the cam 16 moves the advancing and retracting rod 17, which reciprocates a certain distance back and forth in the same period as the rotating table, to the rotating table.
The spring 1 is installed in the hole at the tip of the spring 1.
The contact pin 19 is slidably inserted through the contact pin 8. A power source S is connected between the contact pin 19 and the shaft 20 of the rotary table 1 via an excitation coil of a relay (not shown), and the relay contact opens when the excitation coil is energized and closes when it is not energized, and the advancing/retracting rod 17 moves forward. A contact point of a microswitch that closes when the position is reached is connected in series, and the power supply rotation of the electromagnet 14 is interposed.

A receiving box 21 is visible below the clamping device A facing the contact pin 19.

Reference numeral 22 denotes a regulating plate for regulating the length of the lead, which is installed at a position a predetermined distance away from the clamper A and on the near side of the contact pin 19 when viewed from the rotating direction of the rotary table 1.

23 indicates a discharge gutter. Reference numeral 24 denotes a rotary table for supplying tab terminals, the rotary shaft 25 of which is horizontally suspended, a clamping device similar to that of A is provided on the periphery of the rotary table 24, and an aluminum round bar portion is pressed by a press machine (not shown). Tab terminals formed into flat rectangles are received one by one from the press.

When the rotary table 1 is intermittently rotated by 1/8 rotation, the operating rod 8 is swung up and down at the same frequency as the rotary table 1, and one end of the press plate 3 is pushed down by the roll 12 at its tip. The spring 5 opens the claw 2 to the left and right. At this time, the rotating table 24 is rotated, and the tab terminal T held by the holding device is inserted between the opened claws 2. Next, when the operating rod 8 is swung in the opposite direction and the roll 12 is raised, the spring 7 causes the pressing plate 3 to press against the pawl 2, so that the pawl closes and clamps the tab terminal T. At the same time, the claws of the clamps on the rotary table 24 open, thereby completing the transfer of the tab terminal T from the rotary table 24 to the rotary table 1.

In this way, the tab terminals T are sequentially supplied to the clamping device A, and the rotary table 1 holds the tab terminals T in the fixed position with the clamping device A, with the lead wires Ta facing radially outside the rotary table 1. Rotate.

When the tab terminal T reaches a position facing the contact pin 19, the advancing/retracting rod 17 is advanced by the cam 16.
At this time, if the lead wire Ta of the tab terminal T is of the standard length and straight and is a good product, the contact pin 19 will come into contact with the tip of the lead wire Ta, and the retractable rod 17
reaches the forward position while compressing the spring 18. Therefore, when the advancing/retracting rod 17 reaches the forward position, a current is already flowing between the contact pin 19 and the shaft 20 via the tab terminal T, energizing the excitation coil of the relay and opening the relay contact. Even when the advance/retreat rod 17 reaches the forward position and the contact of the microswitch closes, the electromagnet 14 is not energized.

Therefore, the claw 2 carries the tab terminal T while holding it to the discharge gutter 23, and there, the operating rod 8 pushes down one end of the pressing plate 3, closes the claw 2, and drops the tab terminal T into the discharge gutter 23.

In the case of a defective product in which the lead wire Ta is longer than the standard, the lead wire Ta contacts the regulation plate 22 and is bent. When the tab terminal reaches a position facing the contact pin 19, the contact pin 19 advances but does not contact the lead wire Ta.

Therefore, since no current flows between the contact pin 19 and the shaft 20 and the relay contact remains closed, the forward/retractable rod 17
When the microswitch reaches the forward position and the contact of the microswitch closes, the electromagnet 14 is energized, and the plunger 13 is attracted by the magnetic force and descends, pushing down the pressing plate 3.

This opens the claw 2 and drops the tab terminal T that was being held into the receiving box 21.

The lead wire is already connected before it is supplied to turntable 1.
A tab terminal with a bent Ta is also dropped into the receiving box 21 without contacting the contact pin 19.

In this way, in the present invention, if the lead wire of the tab terminal is not bent in a straight line, its tip contacts the contact pin 19 and current flows through the tab terminal, so that the advancing/retracting rod 17 reaches the forward position. However, if the lead wire is bent, the contact pin 19 will not contact and no current will flow to the tab terminal, so when the retractable lever 17 reaches the forward position, the electromagnet 1 will not operate.
4 is activated, opening the claws of pincher A and dropping the tab terminal. By the way, if the lead wires are longer than specified, they are all bent by the regulating plate 22 in advance, so the present invention has the effect that all lead wires that are too long or bent can be eliminated.

[Brief explanation of the drawing]

FIG. 1 is an overall plan view of the device of the present invention, FIG. 2 is a front view of its main parts, and FIG. 3 is a side view of its main parts. 1 is a rotary table, A is a clamper, 13 is a plunger,
14 is an electromagnet, 19 is a contact plate, and 22 is a regulation plate.

Claims (1)

[Scope of utility model registration request] A clamp is attached to the periphery of the rotary table which rotates intermittently, and the tab terminal is clamped by the clamp and the lead wire is directed radially to the outside of the rotary table. A reciprocating rod that reciprocates back and forth with the same period is provided on the outside of the rotary table, and a contact pin is slidably inserted into the retracting rod via a spring, and when the retracting rod reaches the forward position and the contact pin leads An electromagnet is provided that operates when the wire is not in contact with the wire, and a plunger is provided which opens the clamping device using the electromagnet. A device for removing defective tab terminals, which has a regulating plate on the front side that regulates the length of the lead wire.