JPS63147719A - Feeder - Google Patents

Abstract

PURPOSE:To reduce the size and the weight of a device and a prevent propagation of vibration to a base bed, by a method wherein, in a feeder for conveying powdery material and the like, a magnet is mounted to a trough and an electromagnet is situated so that a magnetic force is exerted on the magnet. CONSTITUTION:By generating resiliency between electromagnets 3, 4 and magnets 5, 6 by applying a specified voltage on the electromagnets 3 and 4, a trough 9 is floated. This constitution eliminates mechanism coupling between the trough 9 and a fixing surface 2, and vibration is prevented from propagation to the fixing surface 2. By exerting a rectangular fluctuation in a voltage value on a charge voltage, vibration responding to the period of an impressed voltage is generated to start transfer in the trough 9. This constitution enables reduction of the size and the weight of a device, and prevention of propagation of vibration to a base bed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a feeder for transporting powder and materials to be fed such as powder.

(Prior Art) Conventionally, a feeder for transferring powder, etc. is disclosed in, for example, Japanese Utility Model Application No. 58-47138.

FIG. 4 shows the complete construction of the system disclosed in Utility Model Application Publication No. 58-47138. The article on the trough 105 is moved by vibrating the trough 105, which is supported via vibrating leaf springs 102 and 103 attached to the trough, with a vibration device.The vibration device uses an electromagnetic coil 106 and an armature 107 attached to the vibration leaf spring 102. A current is passed through the electromagnetic coil 106 to generate an alternating magnetic field, which energizes the armature 107 and causes the vibration leaf spring 102 to vibrate. It is supposed to be done.

(Problems to be Solved by the Invention) By the way, in such a conventional feeder, the support stand 101
is supported on the base 108 by a coil spring 109, and the trough 105 is supported on the support base 101 by a vibration leaf spring 102.
Since the trough 1015 is mechanically attached to the base 108, it is not easy to attach and detach only the trough 1015, and furthermore, the impact when the material to be supplied is transferred to the trough 105 and the vibration during transfer by the trough are directly applied to the base 108. There was a problem that the information was transmitted to

Also one mechanical part, for example the support stand 101. coil spring 1
09, the structure of the feeder itself becomes large and its weight becomes heavy.

The present invention can achieve the following by arbitrarily changing the vibration state of the trough.
The purpose of the present invention is to provide a small and lightweight feeder that allows for a wide range of changes in the conveyance speed and supportable weight of objects to be fed, and in which vibrations from the trough are less likely to be transmitted to the base.

(Means for Solving the Problems) The present invention provides a feeder for transporting a material to be supplied, which includes a trough that is held in a floating state from a fixed surface and vibrates the material to be supplied, and a magnetic material attached to the trough. The above problems of the prior art are solved by a feeder including a body and an electromagnet that vibrates the trough by varying the magnetic force acting on the magnetic body.

(Function) In the present invention, a voltage that rises and falls at a constant cycle is applied to the electromagnet, and the floating trough is vibrated by the magnetic force from the electromagnet, so that the material to be supplied in the trough is transferred.

(Embodiment) Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. FIG. It comprises an attached electromagnet 3.4, magnets 5, 6 located above and apart from this electromagnet 3.4, and a trough 9 attached to the upper part of this magnet 5.6. The magnets 5.6 are fixed to both ends of the trough 9, and are swingably supported on the fixed surface. The troughs 9 are each held in a floating state by the repulsive force caused by the magnetic force when the coil of the electromagnet 3.4 is energized and the electromagnet 3.4 is energized.

At this time, the trough 9 is vibrated by varying at least the magnetic force of the electromagnet 3.4.

The magnets 5, 6 may be electromagnets or permanent magnets.

FIG. 2(a) is a plan view showing the arrangement of the magnetic poles of the electromagnet 3.4 and the magnet 5.6 in the feeder of another embodiment. The magnets 5.6 located slightly above on the inside are excited by the same magnetic pole S or N in the parts facing each other, and as a result, the electromagnets 3.4
When energized, a repulsive force acts.

FIG. 5B shows how the voltage applied to the electromagnet 3.4 changes in order to change the height position of the inner magnet 5.6.

The magnets 5 and 6 of this embodiment are shown as electromagnets in FIG. 2, and if the winding directions of the coils of the electromagnets 3. When a current is applied, the opposing parts are formed to have the same polarity. Support 7 of trough 9 in the center of magnet 5.6
By supporting the trough, the trough is held floating above the fixed surface.

do.

The trough is held in a floating state by the repulsive force between the electromagnets 3 and 4 and the magnets 5 and 6.
), the trough begins to vibrate in accordance with the period of this applied voltage, and the material to be supplied is transferred within the trough as shown in Figures 3(a) and (b). The third embodiment shown is a feeder in which both ends of the trough are held in a suspended state by magnetic force from semicircular electromagnets 3.4 placed at corresponding positions on a fixed surface.

These semicircular electromagnets 3 and 4 have a configuration in which the circular ones of the second embodiment are divided into left and right sides,
Each winding has a magnet 5.6 placed inside it.
On the other hand, a voltage is applied so that the magnetic force within the semicircle of the electromagnet 3 is constant, and the magnetic force within the semicircle of the electromagnet 4 is periodically varied. As a result, the trough starts to vibrate in accordance with the period of the applied voltage using the magnet 5 side as a fulcrum, and the object to be supplied is placed in the trough. By varying the voltage applied to the trough 9, the trough 9 vibrates, and the articles in the trough 9 can be transferred by this vibration. Since it does not require a support stand or a coil spring like conventional feeders, it can be made smaller and lighter. Moreover, by simply adjusting the fluctuation range and fluctuation period of the applied voltage, It is possible to change vibration intensity, transfer speed, etc.

In addition, if the voltage value applied to the electromagnet 3.4 is appropriately controlled, it is possible to generate a repulsive force according to the weight of the object to be fed, and the weight can be detected at the front stage of the trough 9 and its value can be calculated. If the voltage value is automatically controlled by a microcomputer-based control unit based on the above, many advantages can be expected, such as not requiring mechanical adjustment unlike conventional feeders.

(Effects of the Invention) As explained above, according to the present invention, a voltage that rises and falls at a constant cycle is applied to the electromagnet, and the floating trough is vibrated by the magnetic force from the electromagnet. Since the object is being transported, it is possible to make it difficult for the vibration to be transmitted to the fixed surface on which the electromagnet is placed. Also,
By arbitrarily changing the vibration state of the trough, it is possible to obtain a small and lightweight feeder that can widely change the conveying speed and the weight that can be handled.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing the first embodiment of the feeder of the present invention, and FIG. 2(a) is a plan view showing the positional relationship of the magnetic poles of the magnet and electromagnet in the second embodiment. 3(b) is a diagram showing the variation of the applied voltage in the third embodiment, FIG. 3(a) is a plan view showing the positional relationship of the magnetic poles of the magnet and electromagnet in the third embodiment, and FIG. 4 is a diagram showing the magnetic force of the electromagnet of the same embodiment, and FIG. 4 is a configuration diagram of a conventional feeder. DESCRIPTION OF SYMBOLS 1... Feeder, 2... Fixed surface, 3.4... Electromagnet, 5.6... Magnet, 7... Support part, 9... Trough. Patent applicant: Ishida Kouki Seisakusho Co., Ltd. Figure 2 (b) Shi■21

Claims (1)

[Claims] In a feeder that transports a material to be fed, a trough that is held in a floating state from a fixed surface and vibrates the material to be fed, a magnetic body attached to the trough, and a magnetic force acting on the magnetic body that is varied. and an electromagnet that vibrates the trough.