JPH0141692Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a vibrating parts feeder used for aligning and conveying minute parts such as electronic parts and watch parts.

Vibrating parts feeders are widely used for aligning and conveying various parts that are distinguished by shape, material, size, etc., but in recent years, they have been particularly popular for handling small parts such as electronic parts and watch parts, such as small parts with a side of 2 m/m or less. Automation of work such as automatic insertion and automatic inspection of chip parts such as square parts, chip capacitors, chip resistors, chip reactors, chip diodes, etc. with a diameter of 2 m/m and a length of several m/m or less, and watch parts is being promoted. Various small parts feeders with a bowl diameter of around 100 m/m or less than 100 m/m are available for use in aligning and conveying these minute parts.

However, conventional small parts feeders have disadvantages such as a complicated structure, a large number of parts, and difficulty in assembling and adjusting, and have not been satisfactory.

This invention was developed in view of the above-mentioned drawbacks of the conventional technology, and has the following features.

First, the anti-vibration rubber is baked and bonded to the lower base plate to reduce the number of parts and facilitate assembly.

In order to prevent vibrations generated from the parts feeder main body from being transmitted to other parts and equipment via the upper base plate and lower base plate, vibration isolating rubber is inserted between them, and furthermore, in the direction of rotation, It has a unit type anti-vibration rubber structure with sufficient flexibility and rigidity in other directions. In other words, flexibility is provided in the direction of rotational and reciprocating vibration of the bowl, so that the bowl torsion force induced by the electromagnetic force and the leaf spring is not absorbed by the vibration isolating rubber, and acts on the bowl as effectively as possible. That's what I do.

Particularly in the case of a small parts feeder, it is necessary to use a relatively small and compact vibrating electromagnet, and the power of this small and compact vibrating electromagnet is to be used as effectively as possible.

Further, by making the vibration isolating rubber into a unit structure as described above, there is an advantage that this unit can be easily replaced with another fixed parts feeder.

Also, when the weight of the bowl placed on the parts feeder body increases due to the relatively large bowl or attachment device due to the objects to be transported,
In order to prevent the vibration amplitude from decreasing and the feed speed from decreasing, an additional counterweight can be easily and aesthetically installed on the lower vibrating body. That is, it is possible to drive bowls in a relatively wide range of weight relative to the main body.

Particularly for increased counterweight installations,
The structure is such that it can be inserted between the lower vibrating body and the upper base plate so that it can be installed compactly and with good appearance without requiring any shape changes.

Furthermore, by attaching the plate spring that connects the upper vibrating body and the lower vibrating body, which also serves as a bowl attachment part, to the notched recess formed on the outer circumferential surface of the vertical vibrating body, and by making one of the mounting holes into a long hole, a vibrating electromagnet can be installed. The gap between the contactor and the contactor can be easily adjusted from the outside without requiring removal of the cover or other disassembly, and the resonance can be easily adjusted.

In addition, the upper vibrating body also serves as a contactor for the vibrating electromagnet, and the lower vibrating body also serves as a protective envelope for the vibrating electromagnet, reducing the number of parts. It has an integrated structure to simplify assembly, making the overall structure compact and unitary.

Furthermore, although the lower vibrating body also serves as the outer enclosure of the vibrating electromagnet, the gap between the electromagnet and the contact can be adjusted as described above without removing the lower vibrating body, so it has a considerable weight and functions as a resonant weight. This is extremely advantageous in terms of reducing the number of parts and making the overall structure more compact.

Hereinafter, a description will be given of an embodiment of the configuration of this invention shown in the drawings.

FIG. 1 is an external view, FIG. 2 is an internal structure diagram, and FIG. 3 is an example of mounting a counterweight.

In the figure, 1 is a bowl, 2 is an upper vibrating body, and 3 is a bowl.
4 is a vibrating electromagnet, 4 is a lower vibrating body, 5 is a vibrating electromagnet fixing base, 6 is an upper base plate, 7 is a vibration isolating rubber, 8 is a lower base plate, 9 is a leaf spring, and 10 is a counterweight.

The bowl 1 is used to load the parts to be transported and, through the action of attached attachments, serves both for aligned transport and storage. Various bowls can be adopted, such as a stepped bowl, a dish bowl, and a cylindrical bowl. An example of a case is shown below.

The upper vibrating body 2 is the movable side of the vibrating system, and also serves as a contact for the vibrating electromagnet 3. The upper vibrating body 2 has a mounting seat surface 2b with a rectangular stepped portion 2a on its upper surface to which the bowl 1 is attached. A rectangular recess and a seating surface that match these are formed on the bottom surface, and a bolt insertion hole 1a and a screw hole 2c are provided in the center of these.
It is configured to be fixed with one bolt 11.

The vibrating electromagnet 3 is excited by applying pulsating power obtained by half-wave rectifying alternating current, and applies mechanical rotational reciprocating vibration to the bowl 1 through the upper vibrating body 2, which is a contact.

The lower vibrating body 4 is on the fixed side of the vibrating system, and constitutes the overall support structure of the parts feeder main body, and also serves as a protective outer enclosure for the vibrating electromagnet 3. The lower vibrating body 4 has a cylindrical shape as a whole, and has the vibrating electromagnet 3 inside. It forms a storage space. This lower vibrating body 4 also has a predetermined weight since it also functions as a resonant weight.

The vibrating electromagnet fixing base 5 is a member for fixing the vibrating electromagnet 3, and is fixed to the lower inner step 4a of the lower vibrating body 4 via a plurality of bolts 12.

In particular, the vibrating electromagnet fixing table 5 has a protrusion 5a in the center of its upper surface for vertically positioning and fixing the core 3a of the vibrating electromagnet 3, and the lower end of the core 3a is secured to the side with one bolt 13. It is designed to be more securely fixed, and has an insertion hole 5b for an electric cable (not shown) in the center.

The upper base plate 6 and the lower base plate 8 are integrally formed into a unit by baking adhesive etc. with a vibration isolating rubber 7 interposed between them, and the parts feeder main body is connected to other stationary members and devices via this vibration isolating rubber unit. By attaching it to other parts, etc., it prevents the vibration of the main body from being transmitted to other members.

Specifically, the upper base plate 6 is fixed to the lower end of the lower vibrating body 4 via a plurality of bolts 14, and the lower base plate 8 is fixed to other members and devices using a plurality of mounting holes 8a. This is for attaching a parts feeder.

The upper and lower base plates 6, 8 have center holes 6a, 8b, which are used for inserting electric cables, etc.

The lower base plate 8 has a thin plate shape, but the upper base plate 6 has a thick ring shape and has recesses 6b at equal positions on the circumference of the lower surface, and a vibration-proof rubber is installed in the center of each recess 6b. 7 are arranged.

The anti-vibration rubber 7 is provided in a substantially radial arrangement between the upper and lower base plates 6 and 8, and the drawing shows the case where it is provided in four locations at 90° intervals, each with a thinner thickness in the circumferential direction. , has a substantially plate-like shape with a vertically long rectangular cross section with predetermined dimensions in the radial direction and height,
They are provided in a cross-like arrangement from the center of the upper and lower base plates 6 and 8.

The shape and arrangement structure of the vibration isolating rubber 7 are not limited to those described above, and other shapes and arrangement structures are not limited to those described above, and other shapes and arrangement structures can be adopted.

In short, various shapes and arrangement structures can be adopted that can lower the rigidity in the rotational direction and increase the rigidity in other directions (for example, the vertical direction).

Between the adjacent vibration isolating rubbers 7, the upper and lower base plates 6,
Where there should be a void between 8, the upper base plate 6
A protrusion occupying this space is provided on the upper base plate 6.
By increasing the weight of the lower vibrating body 4, it can also serve as a resonant weight. Note that the protrusion may be provided on the lower base plate 8.

The leaf spring 9 connects the upper vibrating body 2 and the lower vibrating body 4 with a predetermined gap to form a vibration system. Strictly speaking, the leaf spring 9 connects the upper vibrating body 2 and the lower vibrating body 4 with a contactor which is the upper vibrating body 2 and the lower vibrating body. The vertical vibrating bodies 2 and 4 are connected with a predetermined gap between them and the vibrating electromagnet 3 attached to the body 4 to form a vibration system.

Therefore, cutout recesses 2d and 4b are formed at equally spaced locations (four locations in the drawing) on the outer circumferential surfaces of the vertical vibrating bodies 2 and 4, and one side wall in the circumferential direction of the cutout recesses 2d and 4b is aligned with the bowl center axis. Slightly tilted against the
Attach both ends of the leaf spring 9 to this part with bolts 1
It is designed to be fixed at 5 and 16.

In order to obtain the necessary vibration amplitude, the leaf spring 9 can be used by stacking a plurality of sheets, or by replacing sheets with different thicknesses, and as shown in Fig. 1a. By making one mounting hole 9a of the spring 9 a long hole and adjusting the distance between the fixed points at both ends of the leaf spring 9, the gap between the vertical vibrating bodies 2 and 4 and the gap between the vibrating electromagnet 3 and the contact body can be adjusted. This makes it easy to do this.

The counterweight 10 is used to increase the relative weight of the lower vibrating body 4 when the total weight of the bowl increases, such as when a feeding attachment is required for parts with a relatively complex shape. As shown in FIG. 3, the annular body can be closely fitted to the lower outer periphery of the lower vibrating body 4, and can be inserted and fixed between the lower end of the lower vibrating body 4 and the upper base plate 6. Therefore, a mounting flange portion 10a is integrally formed at the lower part of the inner circumference, so that the mounting bolts 14 of the upper base plate 6 can be commonly used for mounting.

As explained above, in this invention, plate-shaped anti-vibration rubber with an elongated rectangular cross section is arranged approximately radially between the upper base plate and the lower base plate and is baked and bonded to both base plates, so that the anti-vibration rubber unit is It can have low stiffness in some directions and maintain relatively high stiffness in other directions. Therefore, when the parts feeder is fixed to a stationary member etc. using the lower base plate, the parts feeder is held in a floating state to prevent vibrations from being transmitted to the stationary member etc. and at the same time avoid receiving undesirable reaction force. This allows the bowl to vibrate reliably. Since the parts feeder is fixed in place through the vibration-isolating rubber unit in this way, there is no possibility that the entire parts feeder will move from its predetermined installation location due to vibration, and is therefore extremely stable. This is particularly advantageous for accurately transporting minute components such as chip capacitors that can cause unexpected deflection even when subjected to a slight external force.

Furthermore, since the anti-vibration rubber unit is literally made into a unit, it can be easily disassembled and removed from the parts feeder.
In addition to making assembly easier, when you need to increase the weight of the lower vibrating body, you can remove the bolts that connect the upper base plate and the lower vibrating body, and then tighten the bolts while inserting the annular counterweight. Counterweights can be added quickly, easily, and elegantly by simply fixing them. In addition,
The anti-vibration rubber unit also serves as a weight.
In other words, by providing a protrusion on one or both of the upper base plate and the lower base plate so as to fill the space between adjacent vibration isolating rubbers, the space can be used effectively and the product can be made more compact. A part of the required weight can be made to be on the lower vibrating body side without any disadvantage.

In addition, the number of parts can be reduced by making the upper vibrating body to which the bowl is attached double as the contact of the vibrating electromagnet, and the lower vibrating body to which the vibrating electromagnet is attached doubles as the protective envelope of the vibrating electromagnet and the resonant weight. At the same time, it has become compact and has a simple configuration, making it easy to assemble and disassemble. Moreover, since the leaf spring that connects the upper vibrating body and the lower vibrating body is housed in a notch recessed in the outer peripheral surface of these vibrating bodies, it is possible to adjust the gap between the electromagnet and the contact. The bolts that secure the leaf spring can be accessed directly from the outside without requiring any disassembly.

Thus, according to this invention, it is possible to provide a small and compact parts feeder suitable for aligning and conveying minute parts.

[Brief explanation of drawings]

Fig. 1 is an external view of a parts feeder showing an embodiment of the present invention, Fig. 1a is a front view of a leaf spring, Fig. 2 is a cross-sectional view showing the entire internal structure, and Fig. 3 is an outline showing how to install the counterweight. FIG. DESCRIPTION OF SYMBOLS 1... Bowl, 2... Upper vibrating body, 3... Vibrating electromagnet, 4... Lower vibrating body, 5... Vibrating electromagnet fixing base, 6... Upper base plate, 7... Vibration isolating rubber, 8
... lower base plate, 9 ... leaf spring, 10 ... counterweight.

Claims (1)

[Scope of Claim for Utility Model Registration] A bowl is removably attached to the top surface, an upper vibrating body that also serves as a contact for the vibrating electromagnet, and a vibrating electromagnet that gives rotational reciprocating vibration to the upper vibrating body are installed via a magnet fixing base, A cylindrical lower vibrating body that serves as a protective envelope for the vibrating electromagnet as well as a resonant weight; Insert the ends into the notched recesses formed at equal positions on the outer circumferential surface.
A plurality of leaf springs fixed in such a way that the distance between fixing points at both ends can be adjusted, an upper base plate detachably coupled to the lower end of the lower vibrating body, and detachably coupled to an appropriate stationary member, etc. A plate-shaped barrier with a vertically long rectangular cross section is made of a lower base plate that is attached to the upper and lower base plates and is baked and bonded to both base plates in a substantially radial position to lower the rigidity in the rotational direction and increase the rigidity in other directions. The lower vibrating body includes a vibration isolating rubber unit in which either or both of the upper base plate and the lower base plate is provided with a protrusion projecting into the space between adjacent vibration isolating rubbers. A parts feeder characterized in that an annular counterweight can be added between the lower end of the parts feeder and the upper base plate.