JPS6321927Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a feeding device used for feeding conductive hoop material.

BACKGROUND ART Conventionally, when producing a large number of products in succession using a processing machine such as a press, it has been common to use a hoop material rolled into a strip shape as a raw material.
When supplying this hoop material to a processing machine, it is necessary to actively feed the hoop material when straining due to tension is to be avoided in precision parts such as parts of semiconductor devices. In such cases, a feeding device as shown in FIG. 1 has conventionally been used. This feeding device includes a feeding reel 2 driven by a motor 1, and conductive rods A and B provided above and below a hoop material 3 that runs.
A control section 4 is connected between the two, and the motor 1 is connected to this control section 4. Now, when the hoop material 3 whose reel 2 is stopped is pulled out from the winding reel 2a through the processing machine 5, the hoop material 3 becomes tense and contacts the rod B, thereby sending a signal to the control section 4. Based on this signal, the control section 4 drives the motor 1 to rotate the reel 2 and feed out the hoop material 3. As a result, the tension in the hoop material 3 is released, and when the reel 2 rotates, the hoop material 3 becomes slack and finally comes into contact with the rod A to send a signal to the control section 4. The control unit 4 stops driving the motor 1 based on this signal. As a result, the hoop material 3 loses its slack again and comes into contact with the rod B, thereby repeating the above-described operation. In this way, the hoop material 3 sent to the processing machine is sent out intermittently. However, since such a device has inertia in the reel and its drive system, even if the hoop material comes into contact with the rod B, it cannot be started immediately, resulting in a delay. Therefore, tension is applied to the hoop material. Therefore, such a device has the disadvantage that when processing precision parts such as parts of a semiconductor device, the hoop material is distorted, resulting in defective products. The present invention was devised to improve this drawback.

For this reason, in the present invention, a conductive hoop material is sent to a processing machine such as a press using a conductive reel driven by a motor, and when the hoop material becomes slack, it comes into contact with the hoop material. In addition to providing a conductive rod to
The present invention is characterized in that a drive switch for an adjustable timer is inserted between the rod and the reel to open the electric circuit of the motor for a predetermined period of time due to contact between the rod and the hoop material.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 shows the delivery device of the present invention. This device includes a feeding reel 2 for feeding out the hoop material 3,
A motor 1 that drives the reel 2 and a conductive rod A that comes into contact when the hoop material slackens between the sending reel 2 and the processing machine 5 are provided. The input side of the adjustable timer 6 and its power supply 7 are connected in series, and the output side of the timer 6 is connected to the electric circuit of the motor 1. This is what was inserted. At least a portion of the reel 2 is electrically conductive so that it can constitute a part of the circuit on the input side of the adjustable timer.

The operation of this apparatus configured in this way will be described next. First, the motor 1 of the feeding device is operated to feed the hoop material 3 from the feeding reel 2 at a faster speed than required by the processing machine 5. Then, the hoop material 3 gradually becomes slack and comes into contact with the rod A. When the hoop material 3 comes into contact with the rod A, a timer 6 is activated from the power source 7, which forms a circuit that returns to the power source 7 via the rod A, the hoop material 3, the reel 2, and the timer 6. Therefore, the timer 6 opens the circuit of the motor 1 and stops the rotation of the motor 1. As a result, the reel 2 stops rotating and the feeding of the hoop material 3 is stopped. After that, the processing machine takes in the hoop material 3, so the slack gradually decreases. On the other hand, the timer 6 closes the circuit of the motor 1 and causes the motor 1 to rotate when the specified time has elapsed. Therefore, the hoop material 3 becomes slack again and comes into contact with the rod A. While repeating such operations, the hoop material 3 is sent out from the reel 2 to the processing machine 5. Note that the time limit of the timer must be adjusted using the knob 8 so that the motor 1 is driven as soon as possible before the slack in the hoop material 3 between the reel 2 and the processing machine 5 disappears.

As explained above, the feeding device of the present invention is provided with an adjustable timer that is activated by a material contact signal, and the timer starts or stops the reel drive motor to prevent tension from being applied to the hoop material. It is something.

[Brief explanation of drawings]

FIG. 1 is a schematic illustration of an example of a conventional delivery device, and FIG. 2 is a schematic illustration of an embodiment of the delivery device according to the present invention. 1...Motor, 2...Feeding reel, 3...
... hoop material, 5 ... processing machine, 6 ... adjustable timer, 7 ... power supply, A ... conductive rod.

Claims (1)

[Scope of utility model registration request] A conductive hoop material is sent to a processing machine such as a press by a conductive reel driven by a motor.In a feeding device, a conductive rod is provided that comes into contact with the hoop material when the hoop material becomes slack. The feeding device further comprises a drive switch for an adjustable timer which opens the electric circuit of the motor for a predetermined period of time due to contact between the rod and the hoop material, and is inserted between the rod and the reel.