JPH0120331Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of a parts feeder pan.

In conventional parts feeders, such as electromagnetic parts feeders, which use vibration, polyurethane is used to protect the surfaces of the parts feeder, such as balls, that come into contact with objects that the device aims to convey or separate (hereinafter simply referred to as "workpieces"). It is known to coat plastics such as polyester. This coating not only protects the plate surface from chemicals, moisture, etc., but also has the effect of suppressing the noise generated when the plate surface and the product come into contact due to insulation and vibration, and softening the sound quality of the noise. .

In addition, the base material of parts feeder balls, etc. is usually aluminum, steel, or reinforced plastic (FRP).
It is made with etc. In particular, parts feeders with complex shapes, small lot production, or light weight requirements are
Often made of FRP.

When the workpiece of such a parts feeder is contaminated with kerosene, cutting oil, or machine oil, as shown in Fig. 1, for example, the workpiece contact surface of the plate 1 is coated with plastic 3 to prevent vibrations. Although it has the effect of suppressing the noise generated by the contact between the surface of the plate 1 and the workpiece 4, an oil film 5 is formed on the surface of the coated plastic 3.
The frictional force between the workpiece 4 and the plate 1 is reduced, resulting in an inconvenience that the moving speed of the workpiece 4 on the plate 1 is extremely reduced.

The present invention was developed as a result of intensive studies to eliminate the above-mentioned drawbacks.

In other words, the gist of the present invention is to provide a parts feeder in which a large number of protrusions are provided on the workpiece contacting surface of the plate at least at the tips and upper and lower intermediate positions at intervals such that machine oil is not retained in the form of bridges, and the protrusions are further coated with synthetic resin. on a plate.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a top view of the parts feeder 10 of the first embodiment. FIG. 3 is a side sectional view taken along the line A-A' in FIG. 1. In FIG. 2, reference numeral 1 denotes a plate of a parts feeder 10 which is made of a long aluminum plate material as a core, covered entirely with FRP, and formed into a spiral shape with the inner surface expanding from the center to the outside and upward. On the inner surface of this plate 1, that is, the surface that comes into contact with the item, there is a third
As shown in the figure or FIG. 4A, a large number of protrusions 2 are formed at least at their tips and upper and lower intermediate positions at intervals such that machine oil is not retained in the form of bridges, and are further coated with plastic 3. A flange portion 9 is provided on the back surface of the central portion of the plate 1.
This flange portion 9 is attached to an electromagnetic vibrator (not shown) in a vibrator box 11, and the plate vibrates as shown by arrow 13. or,
The projections 2 described above may be formed by embossing the surface of the plate material or by molding the plate material, or may be provided by welding columnar metal or adhering columnar resin or the like.

And plastic 3 to coat the surface
As shown in FIG. 4B, only the portion where the protrusion 2 contacts the workpiece 4, that is, the vicinity of the head of the protrusion 2 may be coated.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, a tray 1 is formed in the shape of a gutter above an electromagnetic vibrator 6, and the surface of the tray 1 has protrusions 2,
A coating of plastic 3 is provided.

The parts feeder 1 formed in this manner moves the workpiece 4 linearly. Further, it is also possible to change the traveling direction of the work 4 by greatly curving the plate 1. In the first and second embodiments described above,
As the material for the plate 1, iron, copper, brass, etc. may be used, or these materials may be molded. or,
Plastics to be coated include polyethylene, polypropylene, polyurethane, epoxy resin, polystyrene, acrylic resin, polyvinyl chloride, nylon, etc. Coating methods include known dipping methods, spraying methods, brush coating methods, and vacuum evaporation. The method is adopted as appropriate depending on the plastic used. Furthermore, the shape of the device can vary depending on the product or intended use. Although an electromagnetic vibrator has been described as the vibration source for the parts feeder 10, a motor drive method can be similarly considered.

The plate 1 of the parts feeder 10 of the first and second embodiments described above has a large number of protrusions 2 on the contact surface with the workpiece 4.
, the contact surface area between the workpiece 4 and the plate 1 increases, and even if oil adheres to the surface of the workpiece 4, the frictional force between the workpiece 4 and the plate 1 decreases due to the oil film 5 as shown in Figure 1. Therefore, the moving speed of the workpiece 4 does not decrease excessively. As shown in FIG. 6, even if the oil 8 adheres to the surface of the protrusion 2, the oil 8 immediately flows down as shown by the arrow 12 between the protrusions 2 which are spaced sufficiently apart from the head of the protrusion 2. Therefore, the oil film 5 is less likely to be formed. Moreover, as shown in FIG. 7, the upper protrusion 2 is slightly deformed when the workpiece 4 collides with the protrusion 2, making it possible to further suppress noise.

Next, the effects of the present invention will be explained.

This invention uses machine oil that adheres to the parts in a parts feeder that gradually breaks down the parts piled up on the receiving tray by vibration along the surface corresponding to the conveyance of the parts receiving tray, and finally carries them out one by one. A large number of protrusions are formed on the surface of the tray in order to prevent the conveyance speed of the components from decreasing due to the reduction in frictional resistance caused by the presence of a part between the tray and the component.
The distance between the protrusions is set so that at least the machine oil is not held in a bridge shape between the tips of the protrusions due to its viscosity, and falls to the bottom of the saucer, and the protrusion surfaces are coated with a synthetic resin film, making it highly resistant. It is highly chemical and water resistant, and the noise generated when the product comes into contact with a vibrating surface is much lower than that of conventional synthetic resin coatings.
Moreover, the sound quality can be made soft, and furthermore, even if oil is attached to the surface of the workpiece, there is an excellent effect that the moving speed of the workpiece will not be reduced due to an oil film.

[Brief explanation of the drawing]

Fig. 1 is a partially enlarged sectional view showing the conventional example, Fig. 2 is a top view showing the first embodiment of the present invention, Fig. 3 is a side sectional view taken along line A-A', Fig. 4 B is a partially enlarged sectional view taken along line A-A' in FIG. 2, FIG. 5 is a side view showing the second embodiment, and FIGS.
FIG. 6 is a partially enlarged sectional view showing the effect of the second embodiment. 1...Plate, 2...Protrusion, 3...Plastic,
4... Work, 6... Vibrator, 10... Parts feeder.

Claims (1)

[Scope of utility model registration request] In a parts feeder that transports a workpiece by vibrating a plate on which a workpiece is placed for transport in a direction along the surface of the plate, a protrusion is provided on the workpiece contacting surface of the plate, at least oil adhering to the workpiece is formed in a bridge shape between the tips of the protrusion. A plate for a parts feeder, characterized in that a large number of protrusions are provided at intervals that will not allow the protrusions to be held, and the protrusions are further coated with a synthetic resin.