JPS62240212A - Vibrator - Google Patents

Abstract

PURPOSE:To facilitate the adjustment of frequency of vibration of a feed device, in a part feeder vibrator, by controlling the frequency and vibrating condition of the feed device in accordance with the frequency and waveform of vibration of a drive device. CONSTITUTION:When an output from a saw blade shape oscillator 14 which may vary the duty-cycle and frequency thereof is applied to a drive coil 12 through an amplifier 15 having a large damping factor, a roller is driven so that it rotates in a high accelerating condition in the rise part of a waveform of the output. Accordingly, a workpiece on a bawl may not follow the rotation of the bawl 1, and therefore, it comes to a stop at that position. Then, in the dropping part of the waveform, although the roller 3 tends to make reverse rotation, the roller 3 is subjected to the magnetic brake action of a magnetic circuit 8 and therefore is returned to its given position. At this time the workpiece may moves together with the bawl 1 since the speed is low. With this arrangement it is possible to facilitate the adjustment of frequency of vibration of the bawl by changing the output of the drive device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shaking device for a parts feeder that uses vibration.

[Conventional technology]

Conventionally, the vibration of a vibrating parts feeder is due to the natural frequency determined by the it or moment of inertia of the vibrating body and the spring that supports it, and is a half-wave sine wave? The frequency of the magnetic 2U vibration generated from a given coil was matched to the natural motion.

[Problem that the invention seeks to solve]

However, in the above method, the frequency of vibration varies depending on the transfer of the workpiece. When making adjustments, do you have to change the natural frequency by changing the shape or dimensions of the spring? had.

Therefore, the present invention solves such defects in the prior art. The purpose of the present invention is to provide a vibrating device Lt that facilitates frequency adjustment and serves as a driving source for a flexible material feeding device.

[Means to resolve the problem]

In order to solve the above problems, the vibration device of the present invention vibrates by the inverse number of 1 and the inverse number of the drive device and its waveform, regardless of the natural frequency due to the It is characterized by controlling the number and state of vibration.

[Effect]

According to the configuration of the present invention, the parts feeder inflatable body receives an output wave from the drive rod 11. The vibration state of the device is given by changing the amplitude, duty cycle, etc. of the toothed wave or rectangular cedar bark, and by changing the output frequency from the drive device, any frequency can be set. Given. This makes it possible to supply vibrations most suitable for transporting the workpiece.

[Implementation row]

The actual chest of the present invention will be explained below based on the drawings.

At 2 in FIG. 1, a ball 1 is fixed to a rotor 3 by a ball fixing bolt 2. As shown in FIG. Next, the rotor 5 is supported by three tension wires 4 as shown in FIG.
It rotates slightly around the pivot 7 with a restoring force relative to the base 6.

FIG. 6 is a detailed diagram of the magnetic circuit, showing a drive coil 12 wound around a bobbin fixed to the rotor 3, and a magnet 10° yoke 9 fixed to the pace 6. The pole piece 15 constitutes a magnetic "At! 21 path. Here, the λam coil 12 has the following structure as shown in FIG.
Duty cycle and frequency? The output of the variable square wave or sawtooth wave oscillator 14 is output via a high damping factor amplifier 15. In the rising portion of the waveform, the rotor 6 is given a large rotational acceleration q by the magnetic circuit, and at this time, the workpiece on the ball 1 fixed to the rotor 5 is affected by its own inertia and the ball 1. Unable to follow the rotation, it slipped on pole 1 and remained in place. The rotor 3 receives a return force from the tension wire 4 and stops rotating when the return force and the rotational force applied from the magnetic circuit are balanced. At the falling part of the waveform, the rotor 5 is pulled by the tension wire 4 and tries to rotate in the opposite direction, but the 4A moving coil 12 is connected to the amplifier 15 with a large damping factor. It is electromagnetically braked by the magnetic circuit 8, and together with the ball 1 (slowly returns to the normal position 11. Therefore, the workpiece on the ball 1 is at gS
It moves together with the ball 1 due to the force. Since this action occurs continuously, is the workpiece on ball 1? Everything goes smoothly. Further, by the electromagnetic braking described above, it is possible to suppress the natural vibration caused by the moment of inertia of the ball 1 and the rotor 5 and the spring force of the tension wire 4 to some extent.

[Effects of the Invention] As explained above, the non-invention does not depend on vibrations or natural vibrations of the parts feeder; 1. Which vibration is most suitable for transporting workpieces by changing it depending on the output from the drive device?
There are young fruits that feed easily.

[Brief explanation of drawings]

Figure 1 shows the main part of the parts feeder device according to the present invention! l
2 is a plan view of the drive section according to the present invention, FIG. 5 is a cross-sectional view of the non-inventive drive and g magnetic circuit, and FIG. 4 is a rotation 111t4! is the cause. 1...Ball 6...Rotor 4...Tension Φ wire O Applicant: Seiko Epson Co., Ltd. Agent Patent attorney: Isao Mogami and one other person Figure 2

Claims (1)

[Claims] A parts feeder that uses vibration to transfer workpieces is characterized by controlling the frequency and vibration state by the frequency of the drive device and its waveform, regardless of the natural frequency due to the mass or moment of inertia of the spring and vibrating body. vibrating device.