JPH0520467Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is for applying a sealing material to the plug tightening part in advance when plugging a workpiece such as a cylinder block. The present invention relates to a sealant coating device for a plug tightening device.

(Prior Art) Conventionally, in this type of sealing material applicator, as shown in FIG. 8, a hole W' for a blind plug is bored in the workpiece W, and a The base 4 on which the sealant discharging device 2 and the sealant dispersing device 3 of the sealant applicator 1 are mounted and fixed is brought close to the other side, and the drive motor 3a of the sealant dispersing device 3 is provided with a bracket 3b on the upper part. A nozzle holder 3d protruding toward the drive shaft 3c is supported, a rotor shaft 3e is connected to the drive shaft 3c, and a plurality of small through holes (not shown) are bored in the outer circumference at the tip of the rotor shaft 3e. A rotor 3f formed in a cylindrical shape is provided, a nozzle 3g supported by a nozzle holder 3d is inserted into a hollow part of the rotor 3f, and a hose 2a is interposed between the nozzle holder 3d and the sealing material discharging device 2. .

In this sealant applicator, before tightening a blind plug (not shown) into the blind plug hole W', the rotor 3f is inserted into the blind plug hole W', and the sealant is supplied from the sealant discharge device 2. The sealing material is supplied from the nozzle 3g to the rotor 3f via the hose 2a, and is sprayed into the blind plug hole W' from a small through hole provided on the outer periphery of the rotor 3f, which is rotationally driven via the drive shaft 3c. Ru.

(Problems to be solved by the invention) In the conventional device described above, the sealing material application and plug tightening work are automated, and when the blind plug is attached to the blind plug attachment part, For example, in the case of a car engine cylinder block, there is a problem in that it is not known whether engine oil, etc. will leak from the blind plug attachment part until the test run stage after the engine is actually assembled. It was hot.

This idea was created in view of the above problems.
The purpose is to provide a sealant applicator for a stopper tightening device that can detect that the sealant is being applied when applying the sealant to the blind stopper mounting portion of a workpiece. It is in.

(Means for Solving the Problems) As a means for solving the above problems, the present invention is equipped with a sealing material discharging device and a sealing material dispersion device, and both devices are connected to the stopper tightening portion of the workpiece. In the sealing material applicator of the plug tightening device, the sealing material applying device is provided such that the sealing material is applied to the plug tightening portion so that the sealing material can be applied to the plug tightening portion, and the sealing material discharging device includes a valve device for appropriately discharging the sealing material, and the valve device. a cylinder that opens and closes the valve device by connecting with the valve body of the cylinder; a means for constantly biasing the piston of the cylinder toward the piston rod; and a means that engages with the piston of the cylinder to discharge sealing material from the valve device. and a measuring device for confirming that the sealing material is discharged, and the sealing material dispersing device includes a nozzle for supplying the sealing material discharged from the sealing material discharging device, and a measuring device for confirming that the sealing material supplied by the nozzle is The rotor is provided with a rotor having coating holes formed on the outer periphery for dispersion, a drive motor having the rotor mounted on a drive shaft, and a measuring device that engages with the drive motor to confirm that the rotor is rotating. It is something that

(Function) With the above configuration, the sealant is supplied from the sealant applicator to the rotor that is rotationally driven by the drive motor, and the sealant is applied to the workpiece through the application hole drilled on the outer periphery of the rotor. A measuring device installed in the sealant dispersion device confirms that the rotor is rotating to confirm that the coating has been applied to the blind plug hole, and a measuring device installed in the sealant dispensing device confirms that the rotor is rotating. This can be detected by confirming that the toilet device that discharges the sealant is activated and that the sealant has been discharged. As a result, application of the sealant can be confirmed at the time of application of the sealant, and it becomes possible to prevent problems from occurring in post-processes such as test runs.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 7.

As shown in FIGS. 1 and 4, the sealant of the sealant applicator 1, the discharge device 2, and the sealant diffuser 3 are fixed to a base 4. As shown in FIGS.

The sealing material discharging device 2 is provided with a valve device main body 5, a valve chamber 6 is formed in the valve device main body 5, and a sealing material supply port 7 formed in the valve device main body 5 is used as a sealing material supply source (not shown). A sealing material discharge port 8 is formed in the valve device main body 5. The sealing material supply port 7 and the valve chamber 6 and the valve chamber 6 and the sealing material discharge port 8 are connected by the sealing material paths 9, 9 formed in the valve device main body 5, respectively, and a series of sealing material paths are connected to the sealing material supply port 7. , a sealing material passage 9, a valve chamber 6, a sealing material passage 9, and a sealing material discharge port 8. Valve body 10 in valve chamber 6
, fix the cylinder 11 to the valve device main body 5, and insert the piston 12 into the piston chamber 1 of the cylinder 11.
3 so that it can slide freely. The piston rod 14 of the cylinder 11 is connected to the valve body 10. Piston 12 of piston chamber 13 and cover 15 of cylinder 11
A spring 16 and a test rod 17 are interposed coaxially between the piston 12 and the cover 15 of the piston 12.
The piston 12 is fixed to the side end surface, and the spring 16 is biased toward the piston rod 14, so that the piston 12 is always held against the piston rod 1 by the spring 16.
4 side, and the valve device main body 5 is always kept in a closed state by the valve body 10. A fluid supply port 18 is communicated with the piston rod 14 side of the piston chamber 13,
A fluid supply port 19 is communicated with the cover side of the piston chamber 13. A proximity switch (measuring device) 20 is attached to the sealing material discharging device 2 and is arranged so as to be able to engage with the measuring rod 17 of the piston 12. The mounting base 21 of the sealant discharging device 2 is fixed to the base 4.

In the sealing material dispersing device 3, a drive motor 22 is fixed to the base 4, a nozzle holder 24 is used to direct the nozzle 23 that supplies the sealing material discharged from the sealing material discharging device 2, and the nozzle holder 24 is connected to the drive motor. It is supported by a bracket 25 fixed to 22. As shown in FIG. 4, a rotor 2 for applying sealant supplied by a nozzle 24
6 is connected to a drive shaft of a drive motor 22 via a rotor shaft 27. There are coating holes 2 on the outer periphery of the rotor 26.
8 and when the drive motor 22 is operated, the rotor 26 rotates and the sealing material supplied by the nozzle 23 is spread through the application hole 28 . A shock sensor (inspection device) 29 is fixed to the drive motor 22 to reliably detect that the drive motor 22 is operating, and to diffuse the sealing material supplied to the rotor 26 when the rotor 26 rotates. Make sure you understand what you are doing. 1st
As shown in the figure, a hose 30 for supplying the sealant has one end connected to the sealant discharge port 8 of the sealant discharge device 2, and the other end connected to the nozzle 23, respectively.

As shown in FIGS. 5 to 7, a pair of guide rails 32, 32 are fixed to the main body 31 of the plug tightening device, and a device mounting base 33 is attached to the main body 31 of the plug tightening device. It is fixed to bearings 34, 34 which are slidably fitted to 32. The piston rod 35a of the cylinder 35 fixed to the main body 31 of the plug tightening device is connected to the connecting bracket 36 fixed to the device mounting base 33, and the piston rod 35a of the cylinder 35 expands and contracts, thereby moving the device mounting base 33 as shown in FIG. And in FIG. 7, it can be moved left and right. A stopper 3 disposed at a position facing the piston rod 35a of the cylinder 35 to suppress the amount of movement of the piston rod 35a.
7 is attached to the main body 31 of the stopper tightening device so that the position can be freely adjusted. A stopper 38 for stopping the movement of the piston rod 35a of the cylinder 35 at an intermediate position is slidably fitted into a holder 39 fixed to the main body 31 of the plug tightening device. The piston rod 40a of the stopper cylinder 40 fixed to the plug tightening device main body 31 is connected to the stopper 38 via a connecting bar 41, and by expanding and contracting the piston rod 40a of the stopper cylinder 40, the stopper 38 can be moved forward and backward. Do it like this. The parts feeder 42 is supported by a bracket 43 fixed to the main body 31 of the plug tightening device. A chute 44 that transports plug parts supplied from the parts feeder 42 to a predetermined position.
is arranged on the side of the plug tightening device main body 31 parallel to the guide rail 32. A parts stopper 45 fixed to the bracket 43 is interposed between the parts feeder 42 and the chute 44 to stop the parts feeder 42.
The plug parts supplied from the tap parts are supplied to the chute 44 one by one. The sealing material tank 46 is supported by a bracket 47 fixed to the plug tightening device body 31, and the sealing material is supplied to the sealing material discharging device 2. A parts holder shift device 48, a parts holding device 49, and a tightening device 50 are suspended and fixed to the device mounting base 33. Bracket 5 fixed to device mounting base 33
A cylinder 52 is fixed to the lower end of the cylinder 5.
The second cylinder rod 52a is connected to the base 4. The guide bar 53 is slidably fitted into a guide holder 54 to which the bracket 51 is fixed, and one end thereof is connected to the base 4.

When this embodiment configured as described above is used, first, when the workpiece W is transported by a transport device (not shown) and positioned at a predetermined position, the plug parts (not shown) supplied from the parts feeder 42 are placed in the chute. 44 to a predetermined position, the parts holding device 49 operates to hold the plug part in the parts holder 48a provided in the parts holder shift device 48. When a plug component is held in a parts holder 48a provided in the parts holder shift device 48, the parts holder shift device 48 shifts the part holder 48a so that the plug component faces the workpiece W. When the stopper part is shifted toward the workpiece W, the stopper cylinder 40 is actuated, causing the piston rod 40a of the stopper cylinder 40 to shorten and extend the stopper 38.
When the stopper 38 is extended and stopped at a predetermined position,
The cylinder 35 is actuated, and the piston rod 35a of the cylinder 35 extends, comes into contact with the stopper 38, and stops. Along with this, the device mounting base 33 also moves forward, and the sealant applicator 1 moves to a position facing the blind plug hole W' of the workpiece W.

The sealant applicator 1 applies the blind plug hole to the workpiece W.
When moving to the position opposite W', cylinder 5
2 is activated, and the piston rod 52a of the cylinder 52 is extended, and the rotor 2 of the sealant coating device 1 is activated.
6 into the blind plug hole W' of the workpiece W. When the rotor 26 is inserted into the blind plug hole W' of the workpiece W, the drive motor 22 is activated and rotates the rotor 26. At the same time, air is supplied from the fluid supply port 18 of the sealing material discharging device 2 and the piston 12 is moved backward against the elastic force of the spring 16. When the piston 12 retreats, the valve body 10 also retreats, and a series of sealant passages are formed by the sealant supply port 7, the sealant passage 9, the valve chamber 6, the sealant passage 9, and the sealant discharge port 8, The sealant is in the sealant tank 4.
6 to the sealing material supply port 7, the sealing material is supplied to the rotor 26 from the nozzle 23 through the hose 30. Since the rotor 26 is rotating, the sealing material supplied to the rotor 26 is
The sealing material is diffused through the coating hole 28 of the rotor 26 and applied to the blind plug hole W' of the workpiece W.

When the drive motor 22 operates in this state, the shock sensor 2 fixed to the drive motor 22
9 is actuated by the drive motor 22, and it is confirmed that the rotor 26 is rotating reliably. On the other hand, when the piston 12 retreats, the test rod 17 fixed to the piston 12 approaches the proximity switch 20, detecting that the piston 12 is retreating, and the valve body 10 retreats, causing the valve device body 5 to move backward. is in the open state, and it is confirmed that the sealing material is reliably discharged from the valve device main body 5.

When the blind stopper hole W' of the workpiece W is coated, the air supply to the fluid supply port 18 is switched, air is supplied from the fluid supply port 19, and the piston 1
2 moves forward, the valve body 10 closes the sealing material passage 9, and the valve device main body 5 becomes in a closed state. On the other hand, the drive motor 22 stops operating, and the piston rod 5 of the cylinder 52
2a is shortened and the sealing material applicator 1 is returned to its original position. When the sealant applicator 1 returns to its original position, the stopper cylinder 40 is activated, and the piston rod 40a of the stopper cylinder 40 is extended, causing the stopper 38 to retreat. When the stopper 38 retreats, the cylinder 35 operates, and the piston rod 35a of the cylinder 35 further extends.
It comes into contact with the stopper 37. When the piston rod 35a of the cylinder 35 comes into contact with the stopper 37, the parts holder 48a of the parts holder shift device 48
Since it has moved to a position facing the blind stopper hole W' of the workpiece W, the tightening device 50 operates to remove the stopper part held in the parts holder 48a of the parts holder shift device 48. Tighten it into the blind plug hole W' of the workpiece W.

When the plug part is tightened into the blind plug hole W' of the workpiece W, all the devices return to their original positions and one cycle is completed.

As described above, in this embodiment, it is possible to detect whether the sealing material is applied to the blind stopper hole W' of the workpiece W by the proximity of the shock sensor 29 fixed to the drive motor 22 and the inspection rod 17. This can be reliably confirmed using the switch 20, and blind plug installation work such as automobile engine assembly work can be performed efficiently. Furthermore, since the structure is simple, the manufacturing cost is low, and the conventional device can be modified, which is economical.

(Effect of the invention) As described above, the present invention includes a sealing material discharging device that includes a valve device that discharges the sealing material appropriately, a cylinder that opens and closes the valve device by connecting with a valve body of the valve device, and a cylinder that opens and closes the valve device by connecting with a valve body of the valve device. A means for constantly biasing the piston of the cylinder toward the piston rod side, and a measuring device for engaging the piston of the cylinder to confirm that the sealing material is being discharged from the valve device, The material diffusion device includes a nozzle that supplies the sealant discharged from the sealant discharge device;
A rotor having application holes bored in its outer periphery to diffuse the sealing material supplied by the nozzle, a drive motor having the rotor mounted on a drive shaft, and the rotor being engaged with the drive motor to rotate. When applying sealant to the blind stopper tightening part of the workpiece, the valve device of the sealant dispensing device can check that the sealant is being applied at the same time as applying the sealant. The operation of the sealing material dispersing device and the operation of the drive motor of the sealing material dispersion device can be confirmed by inspection, thereby making it possible to prevent problems after the blind plug is tightened. Furthermore, the conventional work procedure can be carried out as is, and the application of the sealant can be confirmed without reducing work efficiency, making it possible to perform the blind plug installation work efficiently.
Furthermore, since the configuration of the device is simple, manufacturing costs are low, and a conventional device can be modified and used, making it economical.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a sealant applicator for a plug tightening device according to the present invention, Fig. 2 is a side view seen from the direction of the arrow in Fig. 1, and Fig. 3 is a -
4 is an enlarged explanatory view of a portion of FIG. 1; FIG. 5 is a front view showing the plug tightening device according to the present invention; FIG. 6 is a side view showing the plug tightening device according to the present invention; FIG. 7 is a plan view showing a stopper tightening device according to the present invention, and FIG. 8 is a front view showing a conventional sealing material applicator. DESCRIPTION OF SYMBOLS 1...Seal material application device, 2...Seal material discharge device, 3...Seal material diffusion device, 4...Base, 5
... Valve device body, 6 ... Valve chamber, 11 ... Cylinder, 12 ... Piston, 13 ... Piston chamber, 1
4... Piston rod, 15... Cover, 16...
... Spring, 17 ... Testing rod, 20 ... Proximity switch (inspection device), 22 ... Drive motor, 23
... Nozzle, 24 ... Nozzle holder, 25 ... Bracket, 26 ... Rotor, 27 ... Rotor shaft,
28... Application hole, 29... Shock sensor (inspection device), 30... Hose.

Claims (1)

[Scope of Claim for Utility Model Registration] A sealing material discharging device and a sealing material dispersion device are provided, and both devices are provided so as to be close to and separated from a plug tightening portion of a workpiece, and the sealing material is applied to the plug tightening portion. In the sealing material application device for a plug tightening device, the sealing material discharging device includes a valve device that appropriately discharges the sealing material, a cylinder that is connected to a valve body of the valve device to open and close the valve device, and a cylinder that connects with a valve body of the valve device to open and close the valve device. a means for constantly elastically biasing the piston of the cylinder toward the piston rod side; and a measuring device that engages with the piston of the cylinder to confirm that sealing material is being discharged from the valve device; The sealing material dispersing device includes a nozzle for supplying the sealing material discharged from the sealing material discharging device, a rotor having a coating hole bored in its outer periphery for dispersing the sealing material supplied by the nozzle, and a rotor for driving the rotor. 1. A sealing material application device for a plug tightening device, comprising: a drive motor mounted on a shaft; and a measuring device that engages with the drive motor to confirm that the rotor is rotating.