JPS586053Y2 - Tension coil spring assembly confirmation device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tension coil spring assembly confirmation device for confirming whether a tension coil spring is properly assembled into a device to which the tension coil spring is assembled.

Conventionally, in order to check whether a tension coil spring has been correctly assembled into a device in which the tension coil spring is assembled, a photocell was used at the same time as the tension coil spring was assembled based on the height of the tension coil spring. It was confirmed using etc.

However, with this method, if the tension coil spring is not assembled to the hook receivers on both sides and is held in the assembled position, or if it is assembled only to the hook receiver on one side, the tension The disadvantage is that it is not possible to check for abnormalities in the coil spring assembly.

In addition, since the position of the tension coil spring will shift depending on whether the tension coil spring is correctly assembled or not, there is also a method to check the assembly of the tension coil spring by measuring the amount of position shift. However, in this case, a device with high dimensional accuracy is required as an assembly confirmation device, which is not only difficult to implement in general, but incorporating such a device into the assembly line process is likely to cause many failures. This is a problem.

The present invention has been made in view of the above, and its purpose is to provide a tension coil spring assembly confirmation device that can reliably confirm whether or not the tension coil spring assembly is normal. It is in.

The features of the present invention include the provision of a detection confirmation means for detecting whether or not the tension coil spring is properly assembled;
In order to prevent this detection confirmation means from erroneously detecting that a tension coil spring that is not properly assembled is correctly assembled,
The present invention is characterized in that the tension coil spring is moved using a coil spring removing means.

In particular, the present invention was developed based on the fact that if the tension coil spring is not assembled properly, it can be easily moved by blowing air or other means. I tried to reach my goal by adopting methods.

The present invention will be explained in detail below using the embodiments shown in FIGS. 1 and 2.

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG.

In FIGS. 1 and 2, 1 is a workpiece to which a plate member 2 is attached, a hook receiver 3 is fixed to the plate member 2, and a tension coil spring 4 is assembled to the hook receiver 3. .

When the workpiece 1 is transported to a predetermined position, the air cylinder 5
is activated, the movable base 6 is lowered, and the tension coil spring 4 is directed in the direction in which it is assembled.

A detection shaft 8 is attached to the movable base 6 so as to be movable upward while being restrained by a spring 7 at a position facing the tension coil spring 4. As the movable base 6 descends, the detection shaft 8 is moved upwardly. 4, the detection shaft 8 maintains its one-housing position, and only the movable base 6 continues to descend.

A detection switch 9 is fixed to the movable base 6, and when the detection shaft 8 stops descending and only the movable base 6 descends by a predetermined distance, the upper end of the detection shaft 8 hits the lever of the detection switch 9 and the detection switch is activated. 9 is now operational.

Therefore, when the tension coil spring 4 is properly assembled to the hook receiver 3, it can be detected and confirmed.

On the other hand, an air pipe 10 is provided close to the tension coil spring 4, and when the movable base 6 starts to descend, air is blown from the air pipe 10 onto the tension coil spring 4.
If the tension coil spring 4 is not attached to the hook receivers 3 on both sides, or if it is attached only to the hook receiver 3 on one side, move and remove the tension coil spring 4. This is done so that the lower end of the detection shaft 8 does not hit the tension coil spring 4.

Therefore, in this case, even if the movable base 6 descends a predetermined distance, the detection shaft 8 will also descend with it, and the detection switch 9 will not operate, thereby preventing the tension coil spring 4 from being assembled. It is possible to detect and confirm that there is an abnormality.

After the movable base 6 has descended a predetermined distance, it is raised by the action of the air cylinder 5.

Therefore, when the detection confirmation jig consisting of the air cylinder 5, movable base 6, detection shaft 8, and detection switch 9 detects that the tension coil spring 4 is properly assembled, the workpiece 1 is transferred to the next process. On the other hand, when an abnormality is detected, the workpiece 1 is stopped at the same position as the workpiece 1, and countermeasures can be taken.

As described above, according to the embodiment of the invention, it is possible to always reliably detect and confirm the presence or absence of an abnormality in the assembly of the tension coil spring 4, and to stop the work 1 only in the case of an abnormality. This makes it possible to improve productivity.

In the embodiment, when the tension coil spring 4 is assembled abnormally, the tension coil spring 4 is moved and removed by blowing air, but this coil spring removing means is a coil spring using a flexible brush. It may be a removal means, etc., and the effect will not change.

As explained above, the present invention has the remarkable effect of always being able to reliably detect and confirm the presence or absence of an abnormality in the assembly of the tension coil spring.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the tension coil spring assembly confirmation device of the present invention, and FIG. 2 is a front view of FIG. 1. 3...Hook receiver, 4...Tension coil spring, 5...Air cylinder, 6...Movable base 7...Spring, 8・・・・・・
Detection shaft, 9...Detection switch, 10...
...Air pipe.

Claims (1)

[Scope of utility model registration request] a detection confirmation means for detecting whether the tension coil spring is assembled normally; and when the tension coil spring is not assembled normally, the detection confirmation means detects whether the tension coil spring is assembled normally. and a coil spring removing means for moving the tension coil spring to avoid false detection.