JPH0731127B2 - Method for inspecting outer peripheral side surface of cylindrical part and its tool - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for inspecting the lateral appearance of a cylindrical part,
The present invention relates to a tool suitable for use in visual inspection by the same method.

[Prior Art] Conventionally, chip-shaped electronic components in which electronic components such as a capacitor, a diode, and a resistor are formed into a cylindrical chip shape have been widely used. For these electronic components, paint is applied to the outer periphery of the components for the purpose of identification, insulation and the like. For example, a resistor has its resistance value and its accuracy represented by a color code of paint. Further, the cylindrical porcelain chip capacitor is one in which electrodes are provided on the inner and outer peripheral surfaces of a cylindrical porcelain body, and these electrodes are opposed to each other. An insulating resin coat is applied to the outer periphery of this porcelain body.

If the coating material or insulating resin applied to the outer periphery of these cylindrical parts is incomplete, defects such as indistinguishable parts and defective insulation between electrodes occur. For example, in the case of a resistor, if the paint is not completely applied, the resistance value of the resistor, its accuracy, etc. cannot be identified. In addition, incomplete coating of the insulating resin on the cylindrical porcelain chip capacitor not only results in a defective appearance, but also when the cylindrical porcelain chip capacitor is incorporated into an electronic circuit, it may be defective due to poor insulation or poor moisture resistance. It causes problems such as circuit malfunction and short-term failure. Therefore, it is necessary to carefully inspect the appearance of these parts.

Conventionally, in the visual inspection of the components as described above, a plurality of components are stored in a tray having a shallow bottom, the tray is rocked, and the components contained in the tray are rolled to visually inspect the external appearance of the components. However, in this inspection method, since the products to be inspected are scattered on the bottom of the tray in a random manner, the individual parts at the bottom of the tray cannot be evenly visually inspected and many are overlooked. Moreover, since the parts do not necessarily rotate once around by swinging the tray, there are some places where they cannot be seen. Therefore, there was a problem of overlooking defective products.

Therefore, as shown in FIG. 6, there is provided a tool including an alignment plate 1 in which through holes 2, 2 ... In which the cylindrical parts a, a ... It has been proposed (Japanese Utility Model Publication Sho 63-33636). In this tool, the bottom of the through holes 2, 2 ... Has a window large enough to partially project the peripheral surface of the cylindrical parts a, a. The cylindrical parts a, a ... Are accommodated in the through holes 2, 2, ... Of the aligning plate 1, and the bottom surface of the aligning plate 1 is slightly lifted from the plane c, and the aligning plate 1 is placed at the center of the parts a, a. Move in the direction perpendicular to the axis. As a result, since the cylindrical parts a, a are rotated, the parts a
The entire circumference of can be inspected.

[Problems to be Solved by the Invention] However, in the case of inspecting the appearance of a part using the tool,
When the aligning plate 1 housed in the through holes 2, 2, ... Is moved, the components 2, 2, ... Also move in the direction orthogonal to the central axis while rotating, so that the inspection means must also move accordingly. Becomes For example, in the case of visual inspection, it is necessary to follow the above-described movement of the part with the line of sight, but the line of sight cannot follow the movement, and oversight may occur. Further, it is not preferable to follow the movement of the parts with the line of sight because it accelerates the fatigue of the inspector. Further, when the inspection is performed by using a mechanical means, for example, an image sensor, the sensor has to be moved by following the position of the component, which complicates the structure of the inspection device and lowers the inspection accuracy. is there.

Further, in the above-mentioned tool, a window having a size such that the peripheral surfaces of the cylindrical parts a, a ... Stored therein is partially opened at the bottom of the through holes 2, 2 ... Of the aligning plate 1. So
The cylindrical parts a, a ... Cannot be taken out from the bottom of the through holes 2, 2. Therefore, in order to collect the cylindrical parts a, a ... From the alignment plate 1 after the inspection, in order to collect the cylindrical parts a, a ..., the alignment plate 1 is inverted and the through holes 2, 2 ... , A ... need to be taken out. However, in the process of reversing the aligning plate 1, the cylindrical parts a, a ... Fall apart from the respective through holes 2, 2, ..., It is difficult to collect the cylindrical parts a, a. There is a problem that a ... Is easily scattered.

The present invention solves these problems and provides an inspection method that allows inspection without overlooking a defective cylindrical part, and an easy recovery of the cylindrical part after the inspection, and a tool used for the inspection. To aim.

[Means for Solving the Problem] That is, in order to solve the above-mentioned problems, in the cylindrical part appearance inspection method according to the present invention, a through hole larger than the diameter and length of the cylindrical part penetrates the plate-shaped member. An ordered plate arranged in an orderly manner is prepared, and a cylindrical member is housed in each through hole of the aligned plate, and a contact member is arranged below the through hole to hold the cylindrical member in the through hole. By moving the contact member relative to the alignment plate, rotating the cylindrical member in the through hole, inspecting its appearance, and removing the contact member from under the through hole, the cylindrical member is removed. It is characterized in that it is dropped under the through hole and collected.

Furthermore, the cylindrical component visual inspection tool according to the present invention is an alignment plate in which through holes larger than the diameter and length of the cylindrical component penetrate through the plate-shaped member and are arranged in an orderly manner, and the alignment plate is arranged below the alignment plate. It is characterized in that it has a contact member that comes into contact with the peripheral surface of the cylindrical part housed in the through hole and moves relatively to the alignment member.

[Operation] In the inspection device for cylindrical parts and the inspection method using the same according to the present invention, by accommodating the cylindrical parts in the through holes of the alignment plate, these parts can be arranged in a certain direction in an orderly manner. In addition to the above, the component can be rotated on the spot by a member that contacts the peripheral surface. Therefore, there is no oversight of the parts, and it is easy to find an abnormal one among the parts arranged in the same manner. Further, since the parts rotate at a fixed position and do not move on the plane, it is not necessary to move the eye to be inspected or the sensor.

Further, after the inspection, the component can be pulled out from the through hole of the alignment plate only by removing the contact member from under the alignment plate, so that the component can be recovered without inverting the alignment plate.

Example Next, an example of the present invention will be described with reference to the drawings.
The details will be described.

First, the structure of the tool of the present invention will be described. As described above, the tool is an alignment member in which through holes for accommodating the cylindrical parts to be inspected are housed with their central axes oriented in a certain direction. And a member that is below the alignment member and that contacts the peripheral surface of the cylindrical part housed in the through hole and rotates the peripheral part.

The aligning member may be a plate-shaped member, a belt-shaped member or a drum-shaped member having a through hole for accommodating the cylindrical parts. The through hole of this alignment member has a shape and dimensions that allow the cylindrical parts to be inspected to be housed in a certain direction while having a certain margin, and the width and the length are longer than the diameter and length of the cylindrical member, respectively. Increase the size. This aligning member itself may be movable, but in order to hold the parts to be inspected at a certain position when inspecting,
It is better not to move.

A member that contacts the peripheral surface of the cylindrical part housed in the through hole and rotates it supports the part housed in the through hole under the aligning member while supporting the same, and rotates the part. Is to give. As will be described later, for example, a flat plate reciprocating with respect to the aligning member, a traveling belt or a rotating roller can be used. The power source for moving these members may be manual, electric, hydraulic or the like.

To inspect a cylindrical part using this tool, first, the cylindrical part to be inspected is stored in the through hole of the alignment member. As a result, the parts are arranged in a certain order in a certain direction. Then, with the alignment member fixed in position, the member contacting the cylindrical part is moved in a direction perpendicular to the central axis of the part. As a result, the component is rotated in that position while being held in the through hole of the alignment member. At this time, the rotation angle of the cylindrical part is preferably 360 ° or more.

Thus, the side surface appearance of the rotating cylindrical part is inspected, and if a defect is found, it is taken out.

Next, a specific embodiment will be described with reference to the drawings. First, in the first embodiment shown in FIGS. 1 and 2, the alignment member includes a plate-shaped alignment plate 10, Rectangular through holes 11, 11 ... Are opened in this. A flat plate 13 is used as a member that comes into contact with the cylindrical parts a, a ... Stored in the through holes 11, 11. Further, a holding plate 15 is arranged below the flat plate 13, and the flat plate 13 reciprocates between the aligning plate 10 and the holding plate 15. In the embodiment shown in FIGS. 1 and 2, side plates 12 and 12 are provided on both sides of the alignment plate 10, so that the flat plate 13 reciprocates only in the short side direction of the alignment plates 11, 11 ... invite.

The means for reciprocating the flat plate 13 may be any of manual, electric, hydraulic, etc., but in the embodiment shown in FIGS. 1 to 3, a flange portion 14 is provided at the end of the flat plate 13 and the holding plate 15 is provided. Between the spring 16
(Drawing only in Fig. 2) is installed. This allows
When the right end surface of the flat plate 13 is pushed to the left side in FIG. 1 and then this force is removed, the flat plate 13 is returned to its original position by the elastic force of the spring 16, so that it can be easily reciprocated manually.

In this way, the appearance of the cylindrical parts a, a ... Is inspected and defective products are removed from the through holes 11, 11 ... of the alignment plate 10, and then the flat plate 13 and the holding plate 15 are removed as shown in FIG. When the tray b is inserted under the aligning plate 10 while being removed from below the aligning plate 10, the cylindrical parts a, a ... Stored in the through holes 11, 11 ...
Can be discharged from the through holes 11, 11 ... Of the alignment plate 10 at one time and float on the tray b. Further, the aligning plate 10 is lifted up and removed from the top of the flat plate 13, the tray b is placed under one end of the flat plate 13, and the flat plate 13 is tilted so that the same end portion side is down. Cylindrical parts a, a housed in 11 ...
.. remains on the flat plate 13, and subsequently falls due to the inclination of the flat plate 13, so that it can be received by the tray b.

Next, in the second embodiment shown in FIG. 4, as the aligning member, a plate-like aligning plate 10 similar to that of the above-mentioned embodiment is used, but it is housed in the through holes 11, 11 ... A belt 17 wound around rollers 18, 18 is used as a member for contacting the cylindrical parts a, a ..., Which is disposed below the alignment plate 10. That is, the cylindrical parts a, a ... Are housed in the through holes 11, 11, ... Of the alignment plate 10, and the belt 17 is moved to rotate the cylindrical parts a, a.

The cylindrical parts a, a ... Are visually inspected and defective products are removed from the through holes 11, 11 ,.
Place the tray b under the right end of the belt, lift the alignment plate 10 up and remove it from the belt 17, and run the belt 17 in the direction shown by the arrow in FIG. The cylindrical parts a, a ... Are left on the belt 17, which is conveyed by the belt 17 and can be received by the tray b.

Next, in the third embodiment shown in FIG. 5, as the aligning member, the same plate-like aligning plate 10 as in the above-mentioned embodiment is used, but it is housed in the through holes 11, 11 ... The rollers 20, 20 are used as members that contact the cylindrical parts a, a ... That is, the cylindrical parts a, a ... Are housed in the through holes 11, 11, ... Of the aligning plate 10, and the rollers 20, 20 ... Are rotated to rotate the cylindrical parts a, a. These rollers 20, 20 ... Are arranged in each row of the through holes 11, 11 ... of the alignment plate 10, but the rotation of the plurality of rollers 20, 20 is
It is preferable that a plurality of rollers 20, 20 ... Are interlocked with each other so that they are transmitted to each other by a belt 21 shown in FIG.

In addition, after visually inspecting the cylindrical parts a, a ... And removing defective products from the through holes 11, 11, ... Of the aligning plate 10, a tray is inserted under the aligning plate 10 and the rollers 20, 20 ,. Through holes 11, 11 ...
If it is displaced from the bottom, the cylindrical parts a, a ... Stored in the through holes 11, 11 ... Can be discharged at once and received by the tray b.

[Effects of the Invention] As described above, the visual inspection tool for a cylindrical part and the inspection method using the same according to the present invention do not require a line of sight or a sensor to move in accordance with the movement of the part at the time of inspection, and a visual inspection. In this case, oversight can be prevented and the inspection accuracy of the mechanical inspection means can be improved. Furthermore, after the inspection is completed, the cylindrical member can be easily removed by pulling out the cylindrical part from the through hole only by removing the contact member from below the alignment plate.

[Brief description of drawings]

FIG. 1 is a perspective view of a visual inspection tool for a cylindrical part which is an embodiment of the present invention, FIGS. 2 and 3 are longitudinal side views of essential parts of the tool, and FIG. 4 is another embodiment. FIG. 5 is a perspective view of the appearance inspection tool for a cylindrical part, FIG. 5 is a vertical cross-sectional side view of a main part of the appearance inspection tool for a cylindrical part that is another embodiment, and FIG. 6 is a conventional cylindrical part. 10: Alignment plate, 11: Through hole of alignment plate, 13: Flat plate, 17
...... Belt, 20 …… Roller, a …… Cylindrical part

Claims (2)

[Claims] 1. A method for inspecting the appearance of a cylindrical part, wherein an aligning plate in which through holes larger than the diameter and the length of the cylindrical part penetrate through a plate-like member and is arranged in an orderly manner is prepared. With each cylindrical member housed in the through hole, a contact member is placed under the through hole to hold the cylindrical member in the through hole, and the contact member is moved relative to the alignment plate. The cylindrical member is rotated in the through hole, the appearance is inspected, and then the contact member is removed from under the through hole so that the cylindrical member is dropped under the through hole and recovered. Appearance inspection method for cylindrical parts. 2. A tool used for inspecting the appearance of a cylindrical part, in which through holes larger than the diameter and length of the cylindrical part penetrate through the plate-shaped member and are arranged in an orderly manner. A cylindrical part arranged under the aligning plate and having a contact member that comes into contact with the peripheral surface of the cylindrical part housed in the through hole and that moves relative to the aligning member. Appearance inspection tool.