JPH08281167A - Liquid applying device - Google Patents

Abstract

PURPOSE: To save labor by automatically conducting a series of actions of immersing an application roller into a sealing agent in a tank and sliding the roller on the inner peripheral surface of a circular opening in an applicator for applying the sealing agent on the inner peripheral surface of a circular opening of the manifold of an engine, etc. CONSTITUTION: In a sealing agent application process, a lever 45 pivoted at the end of a hollow shaft 31 is turned downward by a spring, and an application roller 53 at the end of the lever is immersed into a sealing agent 54 in a tank 55. Next, a cylinder 40 is actuated, after the lever 45 being turned upward to a horizontal position, the shaft 31 is advanced with the lever 45 by the actuation of the cylinder 30, and the roller 53 is inserted into a circular hole 56. Next, the cylinder 40 is actuated reversely, the lever 45 is turned downward by a spring to contact the roller 45 with the inner peripheral surface of the hole 56, and the shaft 31 is turned normally/reversely in this state to apply the sealing agent on the inner peripheral surface of the hole 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for applying a liquid agent such as a sealant or an adhesive to the inner peripheral surface of a circular hole.

[0002]

2. Description of the Related Art Conventionally, the process of applying a sealant to the inner peripheral surface of a circular opening of a manifold for sending air or air-fuel mixture to a cylinder in an automobile engine has been reliant on manual work, using a cotton swab dipped in the sealant. It is applied by the worker.

[0003]

Since the productivity of such a manual application of the sealing agent is low, automation has been desired. The present invention has been made in view of the above demands, and an object of the present invention is to provide an automated device for applying a liquid agent such as a sealant or an adhesive to the inner peripheral surface of a circular hole.

[0004]

A liquid agent applying device according to the present invention as set forth in claim 1 is a device for applying a liquid agent such as a sealant or an adhesive to the inner peripheral surface of a circular hole, and the guide block is hollow. The shaft is mounted so as to be rotatable and movable back and forth in the axial direction, and a first actuator that drives the hollow shaft forward and backward, a second actuator that drives the hollow shaft to rotate forward and backward, and a tank for containing a liquid agent are provided, and the end of the hollow shaft The lever is rotatably attached to the, and the rotation fulcrum is set so as to be located on the extension of the axis of the hollow shaft, and the center line passing through the rotation fulcrum of the lever is aligned with the axis of the shaft. Is provided with a positioning means for selectively positioning the lever at a position where the center line of the lever intersects with the axis of the shaft at a predetermined angle. Biased by a spring in a direction intersecting with, and third to rotate against the lever the force of the spring
The actuator is integrally provided on the hollow shaft, and the coating roller is attached integrally with the lever on the center line of the lever. The liquid agent applying device according to the present invention according to claim 2 is a device for applying a liquid agent such as a sealant or an adhesive to the inner peripheral surfaces of a plurality of circular holes provided in a workpiece.
A hollow shaft is attached to the guide block so as to be rotatable and movable back and forth in the axial direction, and a first actuator for driving the hollow shaft forward and backward, a second actuator for driving the hollow shaft to rotate forward and backward, and a tank for containing a liquid agent are provided. A lever is rotatably attached to the end of the hollow shaft, and its rotation fulcrum is set so as to be located on the extension of the axis of the hollow shaft. The center line passing through the rotation fulcrum of the lever is the axis of the shaft. And a positioning means for selectively positioning the lever at a position where the same center line and the center line intersect with the shaft center of the shaft at a predetermined angle.
A third actuator, which biases the lever with a spring in a direction in which its center line intersects the axis of the shaft and which rotates the lever against the force of the spring, is integrally provided on the hollow shaft, and the third actuator is provided on the center line of the lever. A coating unit having a coating roller integrally attached to the lever is installed corresponding to each circular hole, and each coating unit is operated in a predetermined procedure.

[0005]

According to the liquid agent applying device of the present invention as set forth in claim 1, in the first step, the lever moves to a position where the center line of the lever intersects with the axis of the shaft at a predetermined angle by the force of the spring. The coating roller is rotated to immerse the coating roller in the liquid at this position, the lever is rotated by the third actuator until the center line coincides with the shaft axis in the second step, and the shaft is rotated in the third step. Move forward with the first actuator to insert the coating roller into the circular hole, rotate the lever by the force of the spring in the fourth step to press the coating roller against the inner peripheral surface of the circular hole, and in the fifth step, open the hollow shaft. The application roller can be slidably contacted with the inner peripheral surface of the circular hole by rotating in the forward and reverse directions by the second actuator. By performing such a series of steps, the liquid agent adhering to the application roller can be evenly applied to the inner peripheral surface of the circular hole. Further, according to the present invention as set forth in claim 2, since the coating units are arranged corresponding to the plurality of circular holes of the workpiece and each coating unit is operated in a predetermined procedure, the plurality of circular holes are close to each other. However, the above-mentioned series of steps are executed without the units interfering with each other. However, if the coating apparatus according to the present invention is applied to the step of applying the sealant to the inner surface of the opening of the manifold, the same step, which relies on manual work, can be automated, so that the productivity can be greatly improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a liquid agent applying apparatus 10 according to a first embodiment of the present invention. The coating device 10 has a first guide block 11 and a second guide block 12, and a pair of shafts 15 are integrally hung vertically with bolts 16 on a bracket 14 fixed to the lower surface of the first guide block 11 with bolts 13. There is. The second guide block 12 is fixed to the tip of a frame 18 fixed to a base 17 with bolts 19. The shaft 15 is vertically inserted into a through hole provided in the second guide block 12, and its end is connected to the bracket 20 by a bolt 21. An air cylinder 22 is fixed to a side surface of the second guide block 12 with a bolt 23, and a piston rod 24 of the cylinder 22 is connected to a bracket 14 fixed to the first guide block 11. The first guide block 11 is moved up and down by the air cylinder 22. A bolt 25 that abuts the lower surface of the second guide block 12 is attached to the bracket 21 that connects the shaft 15, and the rising end of the first guide block 11 can be positioned by adjusting the amount of protrusion of the bolt 25 from the bracket. . On the other hand, the first guide block 1
The first guide block 11 contacts the upper surface of the second guide block 12 and is positioned at the descending end of 1.

As shown in detail in FIG. 3, the first guide block has upper and lower through holes 26 and 27, and an air cylinder 30 is fitted to the rear end of the upper through hole 26, and the lower guide hole is provided. A hollow shaft 31 having a regular hexagonal cross section in the through hole 27.
Is inserted. A piston rod 33 of the air cylinder 30 is movably supported by a sleeve 28 fitted to the front end of the through hole 26, and a bracket 34 is fixed to the tip protruding from the through hole 26 with a screw. A sleeve 29 is rotatably fitted to the lower portion of the bracket 34.

The hollow shaft 31 is rotatably and movably supported by bearings 32 fitted to the front and rear ends of the lower through hole 27. A gear 35 is fitted to the hollow shaft 31 so as to be relatively movable back and forth and to rotate integrally. On the other hand, a rotary air cylinder 36 is fixed to the side surface of the first guide bracket 11, and a gear 37 attached to the output shaft of the cylinder 36 and the gear 35 are connected by a belt 38. An air cylinder 40 is integrally assembled to the rear end of the hollow shaft 31, and a piston rod 41 of the cylinder 40 penetrates the hollow shaft 31 and is fitted into the sleeve 29. A bracket 42 is fitted to the tip of the sleeve 29 protruding from the bracket 34. As shown in the enlarged view of FIG. 3, the bracket 42 is formed with a through hole 43 into which a sleeve is fitted and a notch 44 communicating with the hole 43, and a protruding piece 50 slidably mounted on the notch 44 is a bolt. It is connected to the piston rod 41 at 51. The hollow shaft 31 and the bracket 42 are connected via the convex piece 50 and the sleeve 29 so as to rotate integrally. A lever 45 is attached to the cutout portion 44 by a pin 46 so as to be vertically rotatable. This pin 4
6 is set to be located on the extension of the axial center of the hollow shaft 31. In addition, the hollow shaft 3 is provided in the cutout portion 44.
A flat surface 47 parallel to the axis of 1 and an inclined surface 48 following the flat surface 47 are formed, and when the rear upper surface of the lever 45 contacts the flat surface 47, the center line of the lever 45 becomes the axis of the hollow shaft 31. The lever 45 is positioned at the matching position, and the upper surface of the lever 45 contacts the inclined surface 48, so that the amount of downward rotation about the pin 46 is limited. Furthermore, the notch 44
A coil spring 49 is attached to the lever 45, and the center line of the lever 45 is the hollow shaft 31 by the spring 49.
Is urged to rotate in a direction intersecting with the axis of, that is, downward in this embodiment. A rod 51 is fixed to the center of the tip of the lever 45 with a screw 52, and a roller 53 for applying a sealant is attached to the tip of the rod 51. On the other hand, a tank 55 containing the sealant 54 is fixed to the bracket 14 fixed to the first guide block 11 with bolts 56.

The liquid agent applying apparatus 10 according to the present embodiment has the above-described structure, and the hexagonal hollow shaft 31 moves forward and backward along the through hole 27 by the air cylinder 30 and rotates forward and backward by the rotary air cylinder 36. . Also,
The lever 45 is urged downward by a coil spring 49, and the convex piece 5 is moved by the air cylinder 40.
By pressing 0 to the rear end of the lever 45, it is possible to rotate upward against the force of the coil spring 49. The air cylinder 30, the rotary air cylinder 36, and the air cylinder 40 in the present embodiment respectively constitute the first actuator, the second actuator, and the third actuator of the present invention, and an example of the operating procedure will be described below. In the state shown by the solid line in FIG. 1, the piston rod 41 of the air cylinder 40 is at the retracted end, and at this time the lever 45 is rotated downward by the force of the coil spring 49 to the position where the rear end is positioned by the inclined surface 48. Then, the roller 53 makes the tank 5
It is dipped in the sealant 54 in FIG. From this state, the piston rod 24 of the air cylinder 22 is advanced to raise the guide block 11 to the rising end. Almost at the same time as this operation, the piston rod 41 of the air cylinder 40 is advanced and the rear end of the lever 45 is pushed by the convex piece 50 to move the lever 4
5 is rotated upward to a position where it is positioned by the flat surface 47. As a result, the coating roller 53 faces the circular hole 56. Therefore, the piston rod 3 of the air cylinder 30
When 3 is moved forward, the hollow shaft 31 moves forward, and the coating roller 53 is inserted into the circular hole 56 at the forward end of the rod 33. Next, the piston rod 41 of the air cylinder 40 is retracted. Then, the lever 41 is rotated downward by the force of the coil spring 49, and the coating roller 53 is pressed against the inner peripheral surface of the circular hole 56. Therefore, when the hollow shaft 31 is rotated in the forward and reverse directions by the rotary air cylinder 36, the bracket 42 is rotated, so that the coating roller 53 is slidably contacted with the inner peripheral surface of the circular hole 56 as shown in FIG. The sealing agent 54 is applied to the inner peripheral surface of the circular hole 56 by turning around the axis O of 31.
When the coating operation is completed, the above operation procedure is reversed to return the apparatus to the state shown in FIG.

Next, a second embodiment of the present invention is shown in FIG.
In the coating device 10 described above, the guide shaft 15 is arranged vertically and the hollow shaft 31 is arranged horizontally. However, in the coating device 10A according to the present embodiment, the guide shaft 15 is arranged horizontally and the hollow shaft 31 is arranged. 31 is arranged vertically, and the mounting position of the tank 55A and the mounting position of the circular hole 56A are changed according to the difference in the arrangement. In this embodiment having such an arrangement, in order to attach the sealant 54 in the tank 55A to the coating roller 53, as shown in FIG.
The piston rod 33 of the air cylinder 30 is advanced from the state indicated by the solid line. As a result, the coating roller 53 descends and enters the tank 55A, hits the bottom surface of the tank 55A, and stops. Therefore, the piston rod 33 is retracted to the retracted end and the application roller 53 is pulled out from the tank 55A. The sealant 54 of the tank 55A adheres to the application roller 53 by such a series of operations.
The sealing agent 54 can be applied to the inner peripheral surface of the circular hole 56A by applying the same operation as that of the application device 10 according to the embodiment. Since the other configurations in this embodiment are the same as those of the coating apparatus 10 according to the first embodiment, the same components are designated by the same reference numerals and the description thereof will be omitted.

FIG. 6 shows a pipe port 6 of an automobile manifold 60.
1 to 68 in the step of applying the sealant 54 to 1 to 68
The planar arrangement | positioning of the apparatus 10 and 10A at the time of applying the coating apparatus 10 and 10A which concerns on an Example is shown. The coating apparatus 10 according to the first embodiment is installed corresponding to the pipe openings 61 to 65 provided on the side surface of the manifold, and the coating apparatus 10A according to the second embodiment is installed corresponding to the pipe openings 66 to 68 provided on the upper surface. Set up. Each of the coating devices 10 and 10A mounts the coating roller 53 having a diameter corresponding to the diameter of the corresponding tube opening 61 to 68 on the lever 45, and operates in a predetermined procedure. In that case, since the pipe openings 66 to 68 on the upper surface of the manifold 60 are provided close to each other, the operation of the air cylinder 22 of each apparatus 10A is particularly performed so that the application rollers 53 of the adjacent application apparatuses 10A do not interfere with each other. Adjust the timing. As described above, by applying the coating device 10 or 10A according to the present embodiment, the process of coating the sealing agent 54 on the pipe ports 61 to 68 of the manifold 60, which conventionally relies on manual work, can be automated, and the productivity is greatly improved. Improve to. Further, when the position of the circular hole changes due to the change of the workpiece such as the manifold, the original coating devices 10 and 10A can be used as they are by changing the arrangement of the coating devices 10 and 10A. , Practically economically beneficial. In addition, the above-mentioned first
Also, in the second embodiment, the application roller 53 is configured to be moved in the two directions X and Y by the air cylinder 22 and the air cylinder 30, but instead of fixing the frame 18 to the base 17, a member movable in the Z direction. If it is configured to be driven in the Z direction by an actuator such as an air cylinder, the coating roller 53 is fixed to X,
It is also possible to move freely in three directions of Y and Z,
It is possible to quickly respond to changes in the workpiece.

[Brief description of drawings]

FIG. 1 is a front view showing a coating apparatus according to a first embodiment of the present invention.

FIG. 2 is a partially cutaway side view showing the coating apparatus.

FIG. 3 is a partially broken sectional view showing a main part of the coating apparatus.

FIG. 4 is an explanatory view schematically showing the operation of a coating roller of the coating apparatus.

FIG. 5 is a front view showing a coating apparatus according to a second embodiment of the present invention.

FIG. 6 is an explanatory diagram showing an application example of the coating apparatus according to the first embodiment and the coating apparatus according to the second embodiment of the present invention.

[Explanation of symbols]

10, 10A → coating device 11 → first guide block 12 → second guide block 13 → bolt 14 → bracket 15 → shaft 16 → bolt 17 → base 18 → frame 19 → bolt 20 → bracket 21 → bolt 22 → air cylinder 23 → bolt 24 → piston rod 25 → bolt 26 → through hole
27 → through hole 28 → sleeve 29 → sleeve 30 → air cylinder 31 → hollow shaft 32 → bearing 33 → piston rod 34 → bracket 35 → gear 36 → rotary air cylinder 37
→ Gear 40 → Air cylinder 41 → Piston rod 42
→ bracket 43 → through hole 44 → notch 45 → lever 46 → pin 47 → flat surface 48 → inclined surface 49 → coil spring 50 → convex piece
51 → rod 52 → screw 53 → applying roller 54 → sealant 5
5 → tank 56, 56A → circular hole 60 → manifold 61-67
→ pipe mouth

Claims (2)

[Claims] 1. A device for applying a liquid agent such as a sealant or an adhesive to the inner peripheral surface of a circular hole, wherein a hollow shaft is mounted on a guide block so as to be rotatable and movable back and forth in an axial direction, and the hollow shaft. A first actuator that drives the hollow shaft forward and backward, a second actuator that drives the hollow shaft to rotate forward and backward, and a tank that contains the liquid agent are provided, and a lever is rotatably attached to the end of the hollow shaft, and the rotation fulcrum is the hollow shaft. Set to be located on the extension of the axis center of
Positioning means for selectively positioning the lever is provided either at a position where a center line passing through the pivot of the lever coincides with the shaft center of the shaft or at a position where the center line intersects the shaft center of the shaft at a predetermined angle. At the same time, a third actuator that biases the lever with a spring in a direction in which its center line intersects with the axis of the shaft and that rotates the lever against the force of the spring is integrally provided on the hollow shaft. A liquid agent application device characterized in that an application roller is attached integrally with the lever on the center line. 2. A device for applying a liquid agent such as a sealant or an adhesive to the inner peripheral surfaces of a plurality of circular holes provided in a workpiece, wherein a hollow shaft is rotatable around a guide block and is reciprocated in the axial direction. Assemble as much as possible, a first actuator that drives the hollow shaft forward and backward, a second actuator that drives the hollow shaft to rotate forward and backward, and a tank that contains the liquid agent, and attach the lever to the tip of the hollow shaft so that the lever can rotate. , The rotation fulcrum is set to be located on the extension of the axis of the hollow shaft, and the center line passing through the rotation fulcrum of the lever coincides with the axis of the shaft. Positioning means for selectively positioning the lever is provided at any of the positions intersecting at a predetermined angle, and the lever is biased by a spring in the direction in which the center line of the lever intersects with the axis of the shaft. In addition, a third actuator that rotates the lever against the force of the spring is integrally provided on the hollow shaft, and an application roller is integrally attached to the lever on the center line of the lever. A liquid agent application device, which is installed correspondingly and operates each application unit in a predetermined procedure.