JP2510374Y2 - Straight type vibration conveyor device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is directed to a rectilinear vibration of a linear feeder such as a vibrating bowl feeder, which linearly feeds workpieces from a work aligning feeder to a workpiece automatic assembling machine in a substantially horizontal position. Conveyor device

[Conventional technology]

In the fields of semiconductor manufacturing and precision machine manufacturing, there are various processes such as cleaning, processing, and assembly of various types of work, and a straight-line vibrating conveyor device that is a straight-line vibrating conveyor device for short-distance work position transfer between such processes. Is often used. This linear feeder uses an electromagnetic vibrator as a drive generation source, and a specific example thereof will be described with reference to FIG.

The apparatus shown in the figure is for aligning and transporting the work (2) on the substantially horizontal chute (1) in the left direction of the drawing, and the chute (1) vibrates in an obliquely vertical direction of the work transport direction,
The work (2) is slanted up and conveyed. That is, this rectilinear type vibration conveyor device includes a substantially horizontal lower vibrating body (5) installed on a fixed base (3) via a vibration-proof elastic body (4), and above the lower vibrating body (5). An upper vibrating body (6) arranged in parallel, and a pair of leaf springs (7) (7) connecting the front and rear ends of the lower vibrating body (5) and the upper vibrating body (6).
A counter weight (8) connected to one end of the lower vibrating body (5), a lower vibrating body (5) and an upper vibrating body (6).
It has an electromagnetic vibrator (9) installed between. The chute (1) is fixed on the upper vibrating body (6).

Upper and lower ends of the pair of leaf springs (7) (7) are fixed to both ends of the lower vibrating body (5) and the upper vibrating body (6) with screws (10). The pair of leaf springs (7) and (7) are the lower vibrating body (5).
The upper vibrating body (6) and the chute (1) are supported above, and the upper vibrating body (6) and the chute (1) are tilted in the same direction on the right side of the drawing with a predetermined mounting angle α so that the upper vibrating body (6) and the chute (1) are oriented in a desired direction. Vibrate. This leaf spring (7) (7) has a spring constant for vibrating the upper vibrating body (6) and the chute (1) at a constant natural frequency.

The electromagnetic vibrator (9) has an AC magnet (11) fixed on one end of the lower vibrating body (5) and a movable iron core (12) fixed to the center of the lower surface of the upper vibrating body (6) in the left and right directions. With the arranged structure, alternating current is passed through the alternating-current magnet (11) to intermittently repeat the attraction of the movable iron core (12), whereby the upper vibrating body (6) is laterally vibrated. That is, by utilizing the resonance phenomenon caused by bringing the natural frequency of the vibration system formed by the masses of the leaf springs (7) (7) and the chute (1) close to the vibration frequency of the AC magnet (11),
The chute (1) is vibrated obliquely upward in the work transfer direction.

The counterweight (8) serves to balance the overall weight and give a balance of the traveling speed of the chute (1). Further, the vibration-proof elastic body (4) prevents the vibration of the lower vibrating body (5) from being transmitted to the fixed base (3), and vibrates the upper vibrating body (6) and the lower vibrating body (5). It is installed to separate and float from the fixed base (3).

[Problems to be solved by the device]

The above-mentioned rectilinear vibration conveyor device has a dust-proof structure and is suitable for transporting semiconductor parts and precision machine parts, but is not suitable for use in places where explosion-proof specifications of complete explosion-proof specifications are applied. That is, since the electromagnetic vibrator (9) is used by passing an AC current through the AC magnet (11), it is desirable to determine the place of use in consideration of the possibility of electric sparks and the like.

For example, the cleaning liquid for semiconductor parts and precision machinery parts is generally CFC-based, but due to recent global environmental problems, the CFC regulations have become stricter, and the cleaning liquid is being defluoroized, resulting in flammability and flammability. Various cleaning liquids, including those described above, have been investigated and are used in some of them. However, in the case of using a rectilinear vibration conveyor device using an electromagnetic vibrator for a work such as a semiconductor component that has been cleaned with a flammable or flammable cleaning liquid, its use place and environment are restricted in terms of safety.

Therefore, an object of the present invention is to provide a complete explosion-proof straight traveling type vibration conveyor device without the risk of fire or explosion.

[Means for solving the problem]

The rectilinear type vibration conveyor device of the present invention comprises a lower vibrating body installed on a fixed base via a vibration-proof elastic body, an upper vibrating body arranged substantially horizontally above the lower vibrating body, and a lower vibrating body. Compressed air is supplied to the flat spring that connects the upper vibrating body, a cylinder that is connected to either the lower vibrating body or the upper vibrating body, a piston that can freely reciprocate in the cylinder, and the cylinder. And an air vibrator which is a means for reciprocating the piston. By bringing the frequency of the air vibrator generated by the reciprocating motion of the piston close to the natural frequency of the vibration system, resonance is utilized to cause the upper vibration. Vibration is applied to the body in an obliquely upward and downward direction with respect to the conveyed direction of the conveyed object.

In a conventional cylinder / piston mechanism, the piston and the driven element are mechanically connected to each other by a piston rod to transmit the movement of the piston, whereas the piston of the air vibrator is freely reciprocable in the cylinder. , In the form of a so-called free piston that has no mechanical connection with the others.

[Action]

The air vibrator of the present invention having the above structure is a completely explosion-proof drive source that vibrates the lower vibrator and the upper vibrator simply by sending compressed air. Even if there is gas or liquid, there is no risk of causing a flame or explosion.

〔Example〕

Examples will be described below with reference to FIGS. 1 and 2.

The straight traveling type vibration conveyor device shown in the first embodiment of FIG.
The present invention is applied to the apparatus shown in FIG. 3, and the same or corresponding portions as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.

The air vibrator (13) is a piston type vibrator, and a flexible hose (16) that sends compressed air to the cylinder (14), the piston (15), and the cylinder (14).
Equipped. This air vibrator (13) is fixed to one end of the lower vibrating body (5) with a screw (17) so that the air vibrating body (13) is laterally placed in the space between the lower vibrating body (5) and the upper vibrating body (6). Once placed, it works as follows.

When compressed air is continuously supplied through the hose (16) of the air vibrator (13), the piston (15) is momentarily pushed to the left in the drawing to compress the air in the cylinder (14), and then It is pushed back by this compressed air. By repeating such an operation, the piston (15) linearly reciprocates (vibrates), and this is transmitted to the lower vibrating body (5). The vibration force and vibration frequency of the air vibrator (13) can be freely changed by adjusting the pressure of the compressed air sent to the hose (16). Here, when the frequency of the air vibrator (13) is brought close to the natural frequency of the vibration system formed by the masses of the leaf springs (7) and (7) and the chute (1) to cause resonance, efficient vibration is generated at the bottom. Vibrating body (5), a pair of leaf springs (7)
It is transmitted to the upper vibrating body (6) via (7). Since the pair of leaf springs (7) and (7) are inclined at a predetermined mounting angle α, the upper vibrating body (6) and the chute (1) vibrate obliquely upward in the work transfer direction, and this vibration causes the chute to shoot. (1) The work (2) above is thrown up and conveyed leftward in the drawing.

The rectilinear vibration conveyor device shown in the second embodiment of FIG.
The air vibrator (13) is connected to the upper vibrating body (6). In the second embodiment, the vibration of the piston (15) of the air vibrator (13) is directly transmitted to the upper vibrating body (6), and there is no operational difference from the case of the first embodiment.

The air vibrator (13) is attached to the lower vibrating body (5) and the upper vibrating body (6) as in the above embodiment.
It is advantageous to set the interval between 1 and 2, but it is not limited to this example.

[Effect of device]

As described above, according to the present invention, the drive source air vibrator for vibrating the vibrating body has a dust-proof structure,
Moreover, since it has a completely explosion-proof structure without a power source, even if flammable or flammable gas or liquid is present in the surrounding environment, there is no fear of igniting it and causing a flame or explosion. Therefore, when a flammable cleaning liquid is used instead of CFC, the cleaned components can be safely transported, and a wide-ranging linear vibration conveyor device with a wide range of applications can be provided.

Further, according to this invention, the vibration frequency of the air vibrator is brought close to the natural frequency of the vibration system to apply vibration to the upper vibrating body by resonance, so that a load is directly applied to the drive source (air vibrator). In addition, there is an effect that the durability of the air vibrator is improved.

[Brief description of drawings]

FIG. 1 is a side view of an essential part showing an embodiment of the present invention, and FIG. 2 is a side view of an essential part showing another embodiment of the present invention. FIG. 3 is a side view of a conventional rectilinear vibration conveyor device. 2 ... Transported object (work), 3 ... Fixed base, 4 ... Anti-vibration elastic body, 5 ... Lower vibrating body, 6 ... Upper vibrating body, 7 ...
Leaf spring, 13 ... Air vibrator.

Claims (1)

(57) [Scope of utility model registration request] 1. A lower vibrating body installed on a fixed base via a vibration-proof elastic body, an upper vibrating body arranged substantially horizontally above the lower vibrating body, and connecting the lower vibrating body and the upper vibrating body. A flat spring with a certain inclination angle, a cylinder connected to either the lower or upper vibrator, a piston that can freely reciprocate in the cylinder, and compressed air supplied to the cylinder to reciprocate the piston. An air vibrator comprising a moving means is provided, and the frequency of the air vibrator generated by the reciprocating motion of the piston is brought close to the natural frequency of the vibration system to utilize the resonance to transfer the object to the upper vibrator. A straight-ahead type vibration conveyor device that applies vibration in the diagonal direction up and down the transport direction.