JP2585919B2 - Product type identification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product type discriminating apparatus for automatically discriminating the type and assembling direction of a product to be assembled in a line, and more particularly, for example, to connect a piston and a crankshaft. The present invention relates to a product type discriminating apparatus for automatically discriminating a model of a vehicle connecting rod in a vehicle assembly line.

[0002]

2. Description of the Related Art In the automobile manufacturing industry, automatic assembly systems for automatically assembling parts into a vehicle body have become widespread.
In an engine part of a vehicle, an assembling operation of connecting a piston and a crankshaft by a connecting rod is a good example in which the automatic assembling system automatically performs the assembling operation.

Therefore, in the prior art, when assembling a piston and a crankshaft to the connecting rod, the position of a single oil hole formed in a large-diameter hole at the end to which the crankshaft is connected is determined by the position of the connecting rod. The type of the connecting rod is determined by determining the assembling direction and visually confirming the display indicating the model engraved on the connecting rod by the operator.

[0004]

However, in the above-described conventional techniques for visually judging the assembling direction of the connecting rod and determining the type of the connecting rod, the connecting rod is manufactured in a substantially symmetrical shape, and the type of the connecting rod is different. Even in this case, since the shapes are very similar, it is difficult to accurately determine the mounting direction and the model.

[0005] Although the erroneous assembling of the connecting rods having different assembling directions or models is found during an operation test,
In this case, since assembling of other parts has already been completed around the connecting rod, there is a trouble that all these parts have to be disassembled and reassembled.

For this reason, there is a problem that a large amount of time is required for disassembly and reassembly as described above, the efficiency of the operation test is hindered, and the productivity of the entire line is reduced.

The present invention has been made in order to solve such a conventional problem, and has been made in order to solve the above problems.
It is an object of the present invention to provide a product type discriminating apparatus capable of accurately and promptly detecting a position of an oil hole or the like of a connecting rod, and thereby reliably and promptly determining a product assembling direction and a product type. I do.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a method of inserting a connecting rod into a large end hole of a product connecting rod.
A light source to be detected, light receiving means for detecting illumination light from the light source passing through an oil hole of the connecting rod, and the oil
Thus the amount of light obtained by the light receiving means through the hole, before
Serial connecting rod is characterized and Turkey and a discrimination signal generating means for outputting a signal indicating whether the predetermined model. Further, the present invention provides a light source and a light source surrounding the light source.
In addition, a hole for guiding illumination light from the light source in a predetermined direction is provided.
Light source cover and the light source passed through the hole of the product
Passing light receiving means, the hole portion of the product to detect the illumination light et
The product by the amount of light
Signal that outputs a signal indicating whether or not
Signal generation means . In addition, the book
The invention is based on the light inserted into the large end hole of the product connecting rod.
A light source, surrounding the light source and illuminating the light source.
A cover for a light source having a hole for guiding in a predetermined direction bright light, before
Illumination from the light source passing through the oil hole of the connecting rod
Light receiving means for detecting light, wherein through said oil hole
Depending on the amount of light obtained by the light receiving means, the connecting rod
A discrimination signal generator that outputs a signal indicating whether the model is a fixed model
And a means for generating.

[0009]

In the product type discriminating apparatus according to the present invention, illumination light from a light source is applied to a hole of a product positioned at a predetermined position.

[0010] The discrimination signal generating means derives a signal indicating that the product is of a predetermined model when the amount of light passing through the hole of the product is equal to or greater than a preset amount of light.

Therefore, the mounting direction of the product and the type of the product can be accurately and quickly determined based on the amount of light passing through the hole of the product.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of a device type discriminating apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a partially omitted perspective view showing a relative positional relationship between a connecting rod W as a product to be distinguished and a model discriminating apparatus 10 embodying the present invention, and FIG. FIG. 10 is a partial vertical cross-sectional explanatory view when 10 is provided.

The connecting rod W has a small-diameter hole (hereinafter, referred to as a small-end hole) P on the end side where the piston pin is mounted, and a large-diameter hole (hereinafter, large) on the end side where the crankshaft pin is mounted. An oil hole S into which oil is injected is formed in a wall surface of the large end hole Q.

The model discriminating device 10 includes a light source unit 12 and a light receiving unit 1.
4, the light source unit 12 is a light source 1 for irradiating the illumination light L.
6 and the socket 1 to which the light source 16 is detachably mounted.
8, a cover flange 20 for preventing leakage of the illumination light L emitted from the light source 16,
And a bracket 22 to which the socket 18 is fixed.
And the light source 16 attached to the cover flange 20.
And an irradiation hole 26 is formed in the cover 24.

The light receiving section 14 includes a photoelectric switch 28 as a discrimination signal generating means for receiving the illumination light L emitted from the light source 16.

FIG. 3 is a block diagram showing the electric circuit 29 for controlling the model discriminating apparatus 10. As shown in FIG.

The electric circuit 29 includes an input circuit 30 for inputting data such as the model of the connecting rod W, and a light source section driving circuit 32 and a light receiving section driving circuit 3 based on the input data.
And a control circuit 36 for controlling the light source unit driving circuit 3.
The drive signal output from 2 urges a cylinder or the like (not shown) to displace the light source unit 12. The drive signal output from the light receiving section drive circuit 34 is for urging the cylinder 40 to displace the light receiving section 14.

The model discrimination signal of the connecting rod W output from the light receiving section 14 is output to the assembly robot control circuit 38.

The model discriminating apparatus 10 constructed as described above
The operation of determining the model of the connecting rod W will be described with reference to FIGS.

First, an automatic assembly robot (not shown)
The connecting rod W is transported and placed at a predetermined position,
The connecting rod W is connected to the positioning pin 42 and the connecting rod.
It is positioned by the positioning cylinder 44. Then
The control circuit 36 is input from the input circuit 30 by an operator.
From the data indicating the model of the connected connecting rod W,
For example, connecting rod W₁Is read, and the light source unit is driven.
Energizes the light source unit driving cylinder (not shown) via the circuit 32
Then, the light source unit 12 is inserted into the large end hole Q (see FIG. 2). This
At this time, the light source unit driving circuit 32
Connecting rod W ₁Of the cover 24 based on the data of
The irradiation hole 26 is positioned at a predetermined position.

Further, the control circuit 36 urges a light-receiving unit driving mechanism (not shown) based on the data of the connecting rod W ₁ input from the input circuit 30, and is located on the center line of the oil hole S of the connecting rod W ₁ . The light receiving unit 14 is displaced to a position parallel to the cross section of the oil hole S.

The light source 16 is turned on by being energized in advance.
Therefore, the illumination light L passes through the irradiation hole 26 and the connecting rod W.₁Oy
Through the hole S, it reaches the photoelectric switch 28. Photoelectric photoelectric
The switch 28 detects that the received illumination light L is less than a preset light amount.
When above, connecting rod W ₁Is the input circuit 30?
Is the same as the model input from the user, and the assembly direction is normal
Is sent to the assembling robot control circuit 38.
And output.

In this case, the light receiving surface of the photoelectric switch 28 is masked so as to have an effective diameter substantially equal to the diameter of the oil hole S, for example, 20 mm. The diameter of 26 is also selected to be 20 mm. Further, since the plate thickness of the cover 24 is set to be as large as approximately 10 mm, the spread of the light beam is suppressed, and the beam width of the illumination light L is approximately 20 mm in diameter.

[0025] FIG. 4 is a diagram connecting rod W ₁ and type set in advance to explain the difference between different connecting rod W _2. In this case, the shape of the model of the connecting rod W ₁ input from the input circuit 30 is, for example, the distance between the center A of the small end hole P and the center B ₁ of the large end hole Q is C ₁ , Assuming that the distance between the center A of the small end hole P and the center B ₂ of the large end hole Q in the connecting rod W ₂ is C ₂ , the center of the effective light receiving surface of the masked light receiving section 14 is the oil of the connecting rod W ₁ . Since it is present on the center line of the hole S, the illumination light L ₁ passing through the oil hole S of the connecting rod W ₁ can be sufficiently received. On the other hand, the oil hole S of the connecting rod W ₂
Since the center line of the illumination light L ₂ which passes does not coincide with the center of the effective light receiving surface of the light receiving portion 14 which is masked, the light receiving portion 1
4 can not be sufficiently receives illumination light L _2.

Accordingly, the connecting rod W to be inspected and determined is
₁And connecting rod W of different model_TwoIs positioned
Means that the amount of light received by the photoelectric switch 28 is
As compared with the normal state, the amount becomes small, and the photoelectric switch 28
Positioned connecting rod W _TwoConnecting rod
W₁Does not output a signal indicating the same as. There
Then, the assembling robot control circuit 38 stops assembling.
In both cases, the alarm buzzer sounds.

Further, when the positioning direction of the connecting rod W ₁ positioned are different, the oil hole S is not a predetermined position (see FIG. 4, S _1). Therefore, since the photoelectric switch 28 can not detect the illumination light L ₁ at all,
Also in this case, the photoelectric switch 28 does not output a signal indicating that the mounting direction is the same as that of the set model.

As described above, according to this embodiment,
The illumination light L of the light source 16 passes through the irradiation hole 26 of the cover 24 and the oil hole S of the connecting rod W and passes through the photoelectric switch 28.
To reach. The photoelectric switch 28 determines whether or not the model of the connected connecting rod W is the same as the model input from the input circuit 30 by determining whether or not the reached light quantity is equal to or greater than a preset light quantity.

When the connecting rod W has a different positioning direction, the oil hole S does not reach the predetermined position, and the illumination light L does not reach the photoelectric switch 28. Therefore, it is possible to detect that the positioning direction is different. .

[0030]

According to the product type discriminating apparatus of the present invention,
The presence or absence of an output signal from the determination signal generation means is determined by whether or not the hole formed in the product is at a predetermined position.

Therefore, it is possible to detect a difference in the mounting direction of the product conveyed and placed at a predetermined position and a difference in the model of the product, and assemble the product in an incorrect mounting direction, or It is possible to prevent parts from being assembled to products of different models.

Further, by preventing the assembly due to the error, it is possible to reduce the work time required for disassembly and reassembly, thereby improving the productivity of the assembly line.

[Brief description of the drawings]

FIG. 1 is a perspective view of a model discriminating apparatus embodying the present invention and a connecting rod.

FIG. 2 is a partial vertical cross-sectional explanatory view when the model discriminating apparatus shown in the embodiment of FIG. 1 is provided on a connecting rod.

FIG. 3 is a block diagram of an electric circuit for controlling the embodiment shown in FIG. 1;

FIG. 4 is a diagram illustrating a positional relationship between a connecting rod and a light receiving unit in the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Model discriminating device 12 ... Light source part 14 ... Light receiving part 16 ... Light source 20 ... Cover flange 24 ... Cover 26 ... Irradiation hole 28 ... Photoelectric switch

Claims (3)

(57) [Claims] 1. A product which is inserted into a large end hole of a connecting rod as a product.
A light source, a light receiving means for detecting illumination light from the light source passing through the oil hole of the connecting rod, and a light amount obtained by the light receiving means passing through the oil hole.
Therefore, it indicates whether or not the connecting rod is of a predetermined model.
And determination signal generating means for outputting to the signal, model determination unit products characterized by the Ruco equipped with. 2. A light source, which surrounds the light source and emits illumination light from the light source.
A light source cover having a hole leading in a predetermined direction, and detecting illumination light from the light source passing through the hole of the product.
Light receiving means and the amount of light obtained by the light receiving means passing through the hole of the product
Indicates whether the product is of a predetermined model.
Model determination device product characterized in that it comprises a discrimination signal generating means for outputting a degree. 3. The product is inserted into a large end hole of a connecting rod as a product.
And a light source surrounding the light source, and illuminating light from the light source.
A light source cover having a hole leading in a predetermined direction, and an illumination from the light source passing through an oil hole of the connecting rod.
A light receiving means for detecting bright light, and a light amount obtained by the light receiving means passing through the oil hole.
Therefore, it indicates whether or not the connecting rod is of a predetermined model.
Model determination device products, characterized in that it comprises a determination signal generating means for outputting to signal.