JPH084131Y2 - Fluid coating device - Google Patents

Description

[Detailed Description of the Invention] [Outline] A fluid coating device for coating a high-viscosity fluid such as grease by a fixed amount in order to prevent variation in the coating amount due to a difference in fluid viscosity. With a tip attached to the tip,
A nozzle that takes in fluid adhering to the tip portion of the tip from the inside through a tip opening, and a movable pin that moves in the nozzle in the axial direction and pushes the fluid taken into the nozzle to the outside through the tip opening of the nozzle. To be configured.

[Industrial applications]

The present invention relates to a fluid application device that applies a high-viscosity fluid such as grease in fixed amounts.

There are many rotating or sliding parts in a set such as a cassette deck, and a small amount of grease is applied to such a movable part at the time of assembly to make the operation smooth. In order to automate this coating process, it is important to establish a technique for supplying a fixed amount of grease to each coating point.

[Conventional technology]

Conventionally, in order to quantitatively apply a high-viscosity fluid such as grease, for example, a syringe 100 as shown in FIG. 7 is used, and the packing 103 inside is advanced by compressed air to discharge the grease 103 inside the syringe from the nozzle 102. Take the way. Reference numeral 104 is grease discharged from the nozzle 102.

[Problems to be solved by the device]

In the configuration shown in FIG. 7, if the viscosity of the grease 103 changes due to temperature, etc., the packing will be packed even if compressed air of the same pressure is introduced.
There is a drawback that the amount of advance of 101 changes and the amount of grease 104 discharged varies.

 The present invention seeks to improve this point.

[Means for solving the problem]

FIG. 1 is a principle view of the present invention, (a) is a sectional view, and (b) is
Is a perspective view. In the figure, 1 is a tip, 2 is a nozzle, 3 is a movable pin, and 4 is a highly viscous fluid such as grease.

[Action]

The tip 1 of the chip 1 has a concave portion 5 in which the fluid 4
Is attached and supplied below the nozzle 2. The movable pin 3 can move in the axial direction inside the nozzle 2, but in the initial state, it is retracted as shown in the drawing to form a recess 6 at the tip of the nozzle. When the nozzle 2 descends in the illustrated state, the fluid 4 at the tip of the tip is taken into the recess 6 at the tip of the nozzle.

FIG. 2 shows the above operation. (1) shows the chip 1
Is the supply of the fluid 4 below the pin, and (2) is the intake of the fluid 4 into the pin tip recessed portion 6. After that, as shown in (3), the tip 1 is moved and then the nozzle 2 is lowered to approach the application point of the work 7. At this time, the movable pin 3 also descends together with the nozzle 2. In this state, when only the movable pin 3 is lowered as in (4), the fluid 4 at the tip of the nozzle is pushed out and adheres to the application point of the work 7. This completes one coating operation and returns to the state of (1) again.

The fluid applying device of the present invention takes in (presses) a fixed amount of the fluid 4 into the tip concave portion 6 of the nozzle 2, that is, fills the concave portion 4 and pushes out the entire amount of the fluid 4 with the rigid movable pin 3. The applied amount of the liquid does not depend on the difference in viscosity of the fluid 4.

〔Example〕

FIG. 3 is a block diagram showing an embodiment of the present invention, (a) is a plan view, (b) is a front view, and (c) is a side view. In this example, four air cylinders 11 to 14 and one rotary actuator 15 are used as drive sources. The first cylinder 11 has its axis
21 Raise and lower the base 31 at the tip. The second cylinder 12 raises and lowers the movable pin 3 in the nozzle 2 by its shaft 22. The first cylinder 11 is fixed to a part of a T-shaped mounting plate 32, and the base 31
Is attached to two movable shafts 33 slidably supported by a mounting plate 32. Further, since the second cylinder 12 and the nozzle 2 are attached to the base 31, these are the first cylinder.
11 raises and lowers integrally.

Since the first cylinder 11 lowers the nozzle 2 to the application point, it has a long stroke. On the other hand, in order to lower the nozzle 2 to the position of the tip 1, a fourth cylinder 14 having a short stroke is provided. This 4th cylinder
Unlike the shaft 21 of the first cylinder 11, the shaft 24 of 14 has only the function of pushing the base 31.

The chip 1 is supported in the grease tank 41 so as to be rotatable by 180 ° in the vertical direction. The aforementioned rotary actuator
Reference numeral 15 is this rotary drive source, which is powered by air. The grease tank 41 is supported by the mounting plate 32 by the arm 34.
The grease tank 41 contains the grease 4, and by swinging the tip 1, a part thereof can be scooped out. At this time, in order to prevent unnecessary grease from adhering to the periphery of the chip 1, the grease removing holder 42 and the block 43 are provided.
Is provided in the tank 41.

FIG. 4 is a detailed view of this, in which (a) is a perspective view, (b) is its A arrow view, and (c) is a B arrow view. The holder 42 is formed with a groove 44 adapted to the width of the chip 1, so that when the chip 1 rises, unnecessary grease attached to both sides is removed as shown in FIG. Similarly, the block 43 is slidably contacted with the tip of the chip 1 as shown in (c) to remove unnecessary grease attached to the tip of the chip. Grease 4 has a consistency of 300-4
Since it is 00, when the tip 1 reciprocates once, a groove is formed in the grease 4 in the tank 41, and even if the tip 1 swings next time, the necessary grease may not be able to adhere to the tip concave portion. In such a case, the grease 4 may be appropriately supplied into the tank 41 so as to fill the groove.

The overall operation will be described below. Cylinder in the initial state
11,12,14 are all raising axes 21,22,24. Therefore, the nozzle 2 is in the raised position, and the movable pin 3 is also retracted to form the concave portion 6 at the nozzle tip as shown in FIG. On the other hand, the chip 1 is in the same state as shown in FIG. 2 (1) with the grease 4 in the tank 41 attached to the tip concave portion 5.

In this state, when the fourth cylinder 14 having a short stroke is operated to lower the shaft 24, the base 31 descends by a certain amount, and the nozzle 2
As shown in FIG. 2 (2), the grease 4 is inserted into the tip concave portion 6. At this time, since the second cylinder 12 is also integrally lowered, the relative positional relationship between the nozzle 2 and the movable pin 3 does not change.

When the intake of the grease 4 into the nozzle 2 is completed, the rotary actuator 15 reverses the tip 1 to prepare for the next adhesion of grease, and the nozzle 2 does not obstruct the descent to the application point as shown in FIG. 2 (3). To do so. In this state, when the first cylinder 11 having a long stroke is operated to lower the shaft 21, the base 31 is largely lowered to bring the tip of the nozzle 2 closer to the work 7.

When the second cylinder 22 is operated in this state, the movable pin 3 descends to the tip of the nozzle and discharges all the grease 4 inside the nozzle onto the work 7, as shown in FIG.

With the above, one application is completed, so cylinders 11, 12, 14
Are all returned and the rotary actuator 15 is rotated in the reverse direction, the initial state of FIG.

As shown in FIG. 3, a stopper 35 for adjusting the height of the application point is attached to one of the movable shafts 33. The third cylinder 13 is used in combination with this stopper 35. That is, the third cylinder
The shaft 23 of 13 collides with the stopper 35 when the first cylinder 11 is actuated to lower the base 31, and the lowering amount of the base 31
Therefore, the height of the nozzle 2 is changed within the stroke of the first cylinder 11. For example, when the shaft 23 of the third cylinder 13 is lowered as shown in FIG. 5 (a), the nozzle 2 can be lowered to a lower position, for example, the full stroke of the first cylinder 11. On the other hand, when the shaft 23 of the third cylinder 13 is raised as shown in FIG. 3B, the nozzle 2 can be lowered only to the middle of the full stroke of the first cylinder 11. Therefore,
When the third cylinder 13 is turned on and off, a difference in stroke height S of the third cylinder 13 occurs in the height of the application point. This function can be used when applying grease by approaching application points of different heights to the same distance. If the number of similar cylinders is increased, the height of the coating point can be changed in multiple stages. The difference in the horizontal direction of the application point can be dealt with by moving the entire apparatus in the horizontal direction.

FIG. 6 shows a modification of the chip 1. In the chip 1 shown in FIG. 1 (b), the tip concave portion 5 is formed by the wall surface of the main body and the pair of side walls 51, 52 protruding therefrom, but in the example of FIG. 6 (a), the bottom portion 53 is further formed. In addition, it is ensured that the tip 1 takes in the grease 4 and transfers the grease 4 from the tip 1 to the nozzle 2. In the example shown in FIG. 7B, a front wall 54 is further added to make the recess 5 a complete box shape. If the width of the concave portion 5 of the chip 1 is about 5 mm, the shape of FIG. 1 can be used for handling the grease 4 having a consistency of 300 to 400, but FIG. The chip 1 as shown in a) or (b) may be used.

A method of directly lowering the nozzle 2 into the grease tank 41 and incorporating the grease 4 at the tip of the nozzle without using the tip 1 may be considered, but in this case, since the nozzle 2 needs to be moved in parallel, the periphery of the nozzle is required. There is a possibility that the grease 4 adhered to will stain the surrounding area. On the other hand, when the tip 1 is used, the amount of grease that comes into contact with the nozzle 2 is limited in advance, so there is no concern about that.

[Effect of device]

As described above, according to the present invention, the operation of applying the high-viscosity fluid in a fixed amount can be stably performed without being influenced by the variation in the viscosity. Further, since the nozzle is not directly put in the fluid container, there is no fear of polluting the surroundings.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention, FIG. 2 is an operation explanatory diagram of the present invention, FIG. 3 is a configuration diagram showing an embodiment of the present invention, FIG. 4 is a detailed view of a grease tank, and FIG. Explanatory drawing of the 3rd cylinder, FIG. 6 is sectional drawing which shows the modification of a chip | tip, FIG. 7 is explanatory drawing of the conventional fluid application device. In the figure, 1 is a tip, 2 is a nozzle, 3 is a movable pin, 4 is a highly viscous fluid, 5 is a tip tip concave portion, and 6 is a nozzle tip concave portion.

Claims (1)

[Scope of utility model registration request] 1. A tip (1) having a concave tip and supplying a highly viscous fluid (4) by adhering it to the concave portion of the tip, and a fluid adhering to the tip of the tip from an opening of the tip. It comprises a nozzle (2) taken in the inside, and a movable pin (3) which moves in the nozzle in the axial direction and pushes out the fluid taken in the nozzle from the tip opening of the nozzle to the outside. A fluid application device.