JP2000135633A - Part enrolment detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously detect the enrolment of the plural number of parts to be assembled with a work before the work is processed. SOLUTION: This device is equipped with an optical fiber sensor 21 detecting the enrolment of both a valve guide and a valve seat at the cylinder head to be assembled with a cylinder head, and with a driving cylinder 22 for letting the optical fiber sensor 21 be approached to/separated from the cylinder head, and the optical fiber sensor 21 simultaneously detects the enrolment of the plural number of the valve guides or the valve seats.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component presence detection device for detecting the presence of a component assembled on a workpiece, and more particularly to a component presence detection device capable of simultaneously detecting the presence of a plurality of components.

[0002]

2. Description of the Related Art Conventionally, when a component is press-fitted into a work by a processing device using a press-fitting device or the like, an operator visually checks whether or not the component is set in the work. For example,
Similarly, when the valve guide and the valve seat are pressed into the cylinder head of the engine, the operator visually checks whether the valve guide and the valve seat are set to all the intake and exhaust valves in the cylinder head of the engine. After checking, the cylinder head was positioned on the mounting table of the press-fitting device.

[0003]

However, in checking the enrollment of the parts to be assembled to the conventional work, since the worker is exclusively visually checked, the worker is required to perform continuous processing by a series of continuous work. The attention of the user became dull, and there was a risk that some parts were not set on the workpiece or some parts were not set properly.

Further, for example, when a plurality of valve guides are press-fitted into a cylinder head of an engine, since the set valve guides protrude from the engine of a predetermined size, there are places hidden from the line of sight of an operator. There was a risk of overlooking the forgotten set or bad set.

As described above, when a work such as press-fitting is performed on a work in a state where components are not set on the work, there is a problem that the work may be damaged by a press-fit head or the like.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-described problems, and to provide a component presence detection device capable of simultaneously detecting the presence of a plurality of components to be assembled on a workpiece before processing the workpiece. With the goal.

[0007]

In order to achieve the above-mentioned object, in a part presence detecting apparatus according to the first aspect, there is provided a part detection means for detecting the presence of a part to be mounted on a work in the work, and the part detection means. A component enrollment detection device comprising: a driving unit for moving the unit close to and away from the workpiece, wherein the component detection unit detects enrollment of a plurality of components at the same time.

[0010] According to this configuration, the enrollment of a plurality of components attached to the work is simultaneously detected by the component detection means approaching the work by the driving means. Further, in the component presence detection device according to claim 2, the work is:
A cylinder head of an engine having a plurality of cylinders,
The parts assembled to the cylinder head are a valve guide press-fitted on one side of the cylinder head and a valve seat press-fitted on the other side, and provided with reversing means for reversing the cylinder head up and down. The means detects a valve guide on one side of the cylinder head and simultaneously detects a valve seat on the other side of the cylinder head which has been turned upside down by the reversing means.

According to this configuration, the cylinder head is
After a plurality of enrollments of the valve guide on one side are detected at the same time, the reversing means is turned upside down, and a plurality of enrollments of the valve seat on the other side are simultaneously detected.

Further, in the component presence detecting device according to claim 3, the cylinder head is formed with two intake valves and two exhaust valves in one cylinder, and the cylinder guide is provided with the valve guide and the valve seat. The intake valve and the exhaust valve to be press-fitted are arranged asymmetrically with respect to the longitudinal center axis of the engine.

According to this configuration, the component detection means corresponding to the intake valve and the exhaust valve formed asymmetrically with respect to the longitudinal center axis of the engine simultaneously detects the enrollment of a plurality of valve guides and valve seats.

[0012]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1, a multi-tasking machine to which the component presence detection device of the present embodiment is applied includes a pressing device 1, a reversing device 2, and a transport device 3.
, A transfer device 19 and a component presence detection device 20
The work, the surface of which has been pressed by the pressing device 1, is transported to the reversing device 2 by the transfer device 19, and after the reversing device 2 reverses the work, the transport device is again turned on. In 3, the sheet is conveyed to the press working device 1 and the back surface is pressed. Before the surface processing and the back surface processing of the workpiece, the component presence detection device 20 detects the presence of the component to be assembled to the workpiece in the workpiece. These series of operations are controlled by the control panel 4.

As shown in FIG. 3, a work to be subjected to press working by the press working apparatus 1 is a valve guide 101.
Cylinder head 1 into which cylinder and valve seat 102 are press-fitted
00. The cylinder head 100 is used for an in-line six-cylinder engine, and is provided with two intake valves and two exhaust valves for each cylinder. Further, a guide press-fit portion 103 as a hole into which a valve guide 101 for guiding a shaft portion of an intake / exhaust valve (not shown) is press-fitted, and a hole into which a valve seat 102 abutting on an umbrella portion of the suction / exhaust valve is press-fitted. The sheet press-fit portion 104 is formed. In addition,
The exhaust valve is disposed along a straight line (see FIG. 4) inclined at a predetermined angle θ with respect to the cylinder row direction in consideration of swirl generation and the like. Further, around the upper surface of the cylinder head 100 (the upper side in the figure where the valve guide 101 is press-fitted),
The side wall 106 is formed so as to extend so that the bearing portion 105 supporting the camshaft (not shown) does not protrude from the end face, and as shown in the figure, the lower surface and the upper surface of the cylinder head 100 are formed in a shape that is not parallel.

The pressing device 1 includes a cylinder head 10
The valve guide 101 is press-fitted in a state in which the zero guide press-fitting portion 103 is located above (hereinafter, referred to as an “upright state”), and the valve is pressed in a state in which the seat press-fitting portion 104 is located above (hereinafter, referred to as an “inverted position”). This is a press-fitting device for press-fitting the sheet 102.

For this purpose, a guide press-in tool 5 for press-fitting a valve guide and a sheet press-in tool 6 for press-fitting and swaging a valve seat are provided as a press-fitting head, and a slide plate 7 provided with these is slid by a cylinder 8. By doing
The press-fit load applied from the press ram 9 is selected. That is, when the cylinder head 100 is in the upright position,
The guide press-fitting tool 5 is located below the press ram 9, and the sheet press-fitting tool 6 is placed below the press ram 9 at the time of inversion.
Is operated so that is positioned.

The reversing device 2 has a side wall 10 formed in a cylindrical shape, and reverses the cylinder head 100 transported therein by the transfer device 19 from an upright state to an inverted state. That is, the chain 11a wound on the outer peripheral surface of the side wall 10 is driven by the drive source 11 to
, The cylinder head 100 stored inside is inverted.

Also, two guide rails 13b extending in the direction in which the cylinder head 100 is carried in and out are provided inside, and these guide rails 13b are provided at the rotating ends of the side walls 10 (from the upright state to the inverted state). When it is rotated, or when it is rotated from an inverted state to an erect state, it is formed in a straight line with a guide rail 13a on the side of the press working device 1 described later.

The transport device 3 transports the cylinder head 100 placed on the pallet 18.
The transfer between the transfer device 3 and the reversing device 2 is performed by a transfer device. The transfer device is
A transfer bar 12, a drive cylinder 14 for moving the transfer bar 12 back and forth, a guide rail 13 disposed parallel to the transfer bar 12, and a bracket 15 for supporting a rear end of the transfer bar 12.
A connecting means 16 which is supported by the guide rail 13 and slides on a support rail, which will be described later, and a support rail (not shown) provided in parallel with the guide rail 13 and fixed to the apparatus frame. Is done.

The component presence detection device 20 has an optical fiber sensor 21 as component detection means and a drive cylinder 22 as drive means. The optical fiber sensor 21 includes a valve guide 101 and a valve seat 10 on the guide press-fitting portion 103 and the seat press-fitting portion 104 of the cylinder head 100.
No. 2 detects whether or not each is normally enrolled. The optical fiber sensor 21 is moved up and down in the figure by a driving cylinder 22 to move toward and away from the cylinder head 100, and the driving cylinder 22 is supported by a support frame 23 fixed to a frame of the press working apparatus 1. I have.

The optical fiber sensor 21 is disposed so as to move up and down at the position shown in FIG. 4, and has two valve seats 102 (in the upright state, four valve guides 10).
Since each of the sensors has a sensor at a position corresponding to 1), the valve guide 101 or the valve seat 102 is provided.
Can be detected simultaneously. When the cylinder head 100 is sent to the press working device 1 at a predetermined pitch for the press-fitting process, the enrollment of the valve guide 101 or the valve seat 102 located below the optical fiber sensor 21 is detected in the order of sending.

The presence of the part is detected by the optical fiber sensor 21.
From the valve guide 101 or the valve seat 1
When the light is projected on the upper end surface of the light emitting element 02 and all the reflected light is detected (when the reflection angle is 180 degrees), it is detected that the valve guide 101 or the valve seat 102 is normally enrolled. On the other hand, when the optical fiber sensor 21 does not detect reflected light (when the reflection angle is other than 180 degrees), it is detected that the valve guide 101 or the valve seat 102 is not enrolled or is not normally enrolled.

Further, when it is detected by the optical fiber sensor 21 that the valve guide 101 or the valve seat 102 is not enrolled or is not normally enrolled, the detection signal is transmitted to the control panel 4 and the operation is performed. Display to alert the user. In this case, the processing control may be stopped together with the display.

Although the present embodiment has been described above, the present invention is not limited to this, but includes five or more sensing parts of an optical fiber sensor and detects enrollment of five or more valve guides or valve seats. You may make it. In this case, the layout of the intake / exhaust valves provided in the cylinder head is preferably a multiple of two.

[0024]

As described above, the present invention is configured as described above. According to the component enrollment detecting device according to the first aspect, the enrollment of a plurality of components attached to the work can be simultaneously detected by the component detecting means, and the work can be performed. It is possible to prevent a participant from confirming the registration of parts.

According to the second aspect of the present invention, even when the valve guide is pressed into one side of the cylinder head and the valve seat is pressed into the other side of the cylinder head in a series of operations, a plurality of parts are detected simultaneously. Workability is improved.

According to the third aspect of the present invention, it is possible to simultaneously detect the presence of a plurality of workpieces having an intake valve and an exhaust valve which are formed asymmetrically with respect to the central axis in the longitudinal direction of the engine.

[Brief description of the drawings]

FIG. 1 is a side view showing a multi-tasking machine to which a part presence detection device according to the present invention is applied;

FIG. 2 is a side view showing a part presence detecting device according to the present invention;

FIG. 3 is a side view showing a cylinder head detected by the component presence detection device according to the present invention.

FIG. 4 is a top view showing a cylinder head detected by the component presence detection device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 ... Optical fiber sensor (component detection means) 22 ... Drive cylinder (drive means) 100 ... Cylinder head 101 ... Valve guide 102 ... Valve seat

Claims (3)

[Claims] 1. A component enrollment detection device comprising: component detection means for detecting enrollment of a component to be mounted on the work in the work; and drive means for moving the component detection means close to or away from the work. The part detection unit detects the enrollment of a plurality of parts at the same time. 2. The engine according to claim 1, wherein the workpiece is a cylinder head of an engine having a plurality of cylinders, and a part assembled to the cylinder head includes a valve guide press-fitted on one side of the cylinder head and a valve seat press-fitted on the other side. And a reversing means for reversing the cylinder head up and down, wherein the component detecting means detects the valve guide on one side of the cylinder head, and at the same time, the other face of the cylinder head which has been reversed upside down by the reversing means. The component presence detection device according to claim 1, wherein the component seat detection device detects the valve seat. 3. The cylinder head, wherein two intake valves and two exhaust valves are formed in one cylinder, wherein the intake valve and the exhaust valve into which the valve guide and the valve seat are to be press-fitted are provided in an engine. 3. The component presence detection device according to claim 2, wherein the component presence detection device is disposed asymmetrically with respect to a longitudinal center axis.