JP2796947B2 - Liquid coating device - Google Patents

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 relies exclusively on manual work, using a cotton swab soaked in the sealant. Worker has applied.

[0003]

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

[0004]

According to a first aspect of the present invention, there is provided a liquid applying apparatus for applying a liquid agent such as a sealant or an adhesive to an inner peripheral surface of a circular hole. 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, while the shaft is rotatably and reciprocally movable in the axial direction. The lever is rotatably mounted on the shaft, 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 coincides with the axis of the shaft. And a positioning means for selectively positioning the lever at one of the positions where the same center line intersects the axis of the shaft at a predetermined angle, and the center line of the lever is positioned at the axis of the shaft. Biased by a spring in a direction intersecting with, and third to rotate against the lever the force of the spring
An actuator is provided integrally with the hollow shaft, and an application roller is attached integrally with the lever on the center line of the lever. The liquid agent application apparatus according to the present invention according to claim 2 is an apparatus for applying a liquid agent such as a sealant or an adhesive to an inner peripheral surface of a plurality of circular holes provided in a workpiece,
Attaching the hollow shaft to the guide block so as to be rotatable and movable back and forth in the axial direction, a first actuator for driving the hollow shaft forward and backward, a second actuator for driving the hollow shaft to rotate forward and reverse, and a tank for storing the liquid agent are provided. A lever is rotatably attached to the tip of the hollow shaft, and its pivot point is set so as to be located on the extension of the axis of the hollow shaft. The center line passing through the pivot point of the lever is the axis of the shaft. Positioning means for selectively positioning the lever at any one of positions where the same center line intersects the axis of the shaft at a predetermined angle with a position coinciding with the position,
A third actuator that urges the lever with a spring in a direction where its center line intersects the axis of the shaft and that rotates the lever against the force of the spring is provided integrally with the hollow shaft. An application unit having an application roller integrally attached to a lever is installed in correspondence with each of the circular holes, and each application unit is operated in a predetermined procedure.

[0005]

According to the first aspect of the present invention, in the first step, the lever is moved by the force of the spring to the position where the center line intersects the axis of the shaft at a predetermined angle. In this position, the application roller is immersed in the liquid agent in the tank at this position, and in a second step, the lever is rotated by a third actuator to a position where the center line coincides with the axis of the shaft. The application roller is advanced by the first actuator, and the application roller is inserted into the circular hole. In the fourth step, the lever is rotated by the force of the spring to press the application roller against the inner peripheral surface of the circular hole. The coating roller can be slid in contact with the inner peripheral surface of the circular hole by rotating in the forward and reverse directions by the second actuator. By executing such a series of steps, the liquid agent attached to the application roller can be applied evenly to the inner peripheral surface of the circular hole. According to the second aspect of the present invention, the application units are arranged corresponding to the plurality of circular holes of the workpiece, and each application unit is operated in a predetermined procedure. Even if the units are provided, the series of steps described above are executed without each unit interfering with each other. Thus, if the application device according to the present invention is applied to the step of applying a sealant to the inner surface of the opening of the manifold, the step, which has been dependent on manual work, can be automated, and the productivity can be greatly improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a liquid 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 vertically suspended by bolts 16 on a bracket 14 fixed to the lower surface of the first guide block 11 with bolts 13. I have. The second guide block 12 is fixed to a tip of a frame 18 fixed to a base 17 with bolts 19. The shaft 15 is inserted into a through hole provided in the second guide block 12 so as to be able to move up and down, and the 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 bolts 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 contacts 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 lower end of the first guide block 11 is positioned by the first guide block 11 being in contact with the upper surface of the second guide block 12.

As shown in detail in FIG. 3, the first guide block has two 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 one is Hollow shaft 31 having a regular hexagonal cross section in through hole 27
Is inserted. The piston rod 33 of the air cylinder 30 is supported by a sleeve 28 fitted to the front end of the through hole 26 so as to be able to advance and retreat, and a bracket 34 is fixed to a tip protruding from the through hole 26 with a screw. A sleeve 29 is rotatably fitted to a lower portion of the bracket 34.

The hollow shaft 31 is rotatably and advancing and retracting supported by bearings 32 fitted at both front and rear ends of a lower through hole 27. A gear 35 is fitted to the hollow shaft 31 such that the gear 35 can relatively move forward and backward and rotate integrally. On the other hand, a rotary air cylinder 36 is fixed to a side surface of the first guide bracket 11, and a gear 37 attached to an output shaft of the cylinder 36 and the gear 35 are connected by a belt 38. An air cylinder 40 is integrally attached 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 to the sleeve 29. A bracket 42 is fitted to a tip of the sleeve 29 projecting from the bracket 34. As shown in an enlarged view in FIG. 3, the bracket 42 has a through hole 43 into which the sleeve is fitted, and a cutout portion 44 communicating with the through hole 43. A convex piece 50 slidably mounted in the cutout portion 44 is bolted. At 51, it is connected to the piston rod 41. 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 notch 44 so as to be rotatable up and down by a pin 46. This pin 4
6 is set so as to be located on the extension of the axis of the hollow shaft 31. The notch 44 has a hollow shaft 3.
A flat surface 47 parallel to the axis 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 is aligned with the axis of the hollow shaft 31. The lever 45 is positioned at the coincident position, and the upper surface thereof abuts against the inclined surface 48, whereby the amount of downward rotation about the pin 46 as a fulcrum is limited. Further, the notch 44
, A coil spring 49 is attached to the lever 45 so that the center line of the lever 45 is
, That is, downward in the present 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 for holding the sealant 54 is fixed to the bracket 14 fixed to the first guide block 11 with bolts 56.

The liquid application apparatus 10 according to the present embodiment has the above configuration, and the hexagonal hollow shaft 31 advances and retreats along the through hole 27 by the air cylinder 30 and rotates forward and reverse by the rotary air cylinder 36. . Also,
The lever 45 is rotationally urged downward by a coil spring 49, and is also
By pressing 0 against the rear end of the lever 45, the lever 45 can be turned 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 constitute the first actuator, the second actuator, and the third actuator of the present invention, respectively, and an example of an operation procedure thereof 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 rearward end, and at this time, the lever 45 is rotated downward by the force of the coil spring 49 until the rear end is positioned at the inclined surface 48. And the roller 53 is in the tank 5
5 is immersed in the sealing agent 54. 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 simultaneously with 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.
5 is rotated upward to a position where it is positioned on the flat surface 47. Thus, the application roller 53 faces the circular hole 56. Therefore, the piston rod 3 of the air cylinder 30
When the rod 3 is advanced, the hollow shaft 31 is advanced, and the application roller 53 is inserted into the circular hole 56 at the advanced end of the rod 33. Next, the piston rod 41 of the air cylinder 40 is retracted. Then, the lever 41 rotates downward by the force of the coil spring 49, and the application roller 53 is pressed against the inner peripheral surface of the circular hole 56. Then, when the hollow shaft 31 is rotated in the forward and reverse directions by the rotary air cylinder 36, the bracket 42 is rotated. As a result, the application roller 53 slides against the inner peripheral surface of the circular hole 56 as schematically shown in FIG. The seal member 54 is turned around the axis O of the center 31, and the sealant 54 is applied to the inner peripheral surface of the circular hole 56.
When the application operation is completed, the operation returns to the state shown in FIG. 1 by reversing the above operation procedure.

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

FIG. 6 shows a port 6 of a manifold 60 of an automobile.
1st and 2nd in the process of applying the sealing agent 54 to
The plane 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 ports 61 to 65 provided on the side surface of the manifold, and the coating apparatus 10A according to the second embodiment corresponding to the pipe ports 66 to 68 provided on the upper surface. Is installed. Each of the coating devices 10 and 10A has a coating roller 53 having a diameter corresponding to the diameter of the corresponding tube port 61 to 68 attached to the lever 45, and is operated in a predetermined procedure. In this case, the pipe ports 66 to 68 on the upper surface of the manifold 60 are provided close to each other, so that the application rollers 53 of the adjacent application apparatuses 10A do not interfere with each other, particularly, the operation of the air cylinder 22 of each apparatus 10A. Adjust the timing. As described above, by applying the coating apparatuses 10 and 10A according to the present embodiment, the step of applying the sealant 54 to the pipe ports 61 to 68 of the manifold 60, which has conventionally depended on manual work, can be automated, and the productivity is greatly increased. To improve. In addition, when the position of the circular hole is changed due to a change of a workpiece such as a manifold, the original coating device 10, 10A can be used as it is by changing the arrangement of the coating devices 10, 10A. , Which is actually economically beneficial. Note that the first
In the second embodiment, the coating roller 53 is moved in the X and Y directions by the air cylinder 22 and the air cylinder 30. However, a member movable in the Z direction instead of fixing the frame 18 to the base 17. , And the member is driven in the Z direction by an actuator such as an air cylinder.
It is also possible to move freely in three directions of Y and Z,
It can respond quickly to changes in the workpiece.

[Brief description of the 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 broken 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 view showing an application example of the coating apparatus according to the first embodiment of the present invention and the coating apparatus according to the second embodiment.

[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 → application roller 54 → sealant 5
5 → Tank 56, 56A → Circular hole 60 → Manifold 61-67
→ port

Continuation of the front page (56) References JP-A-55-119464 (JP, A) JP-A-58-219964 (JP, A) JP-A-63-155524 (JP, A) JP-A-2-48065 (JP) JP-A-61-103566 (JP, A) JP-A-51-6159 (JP, U) JP-A-58-156564 (JP, U) JP-A-60-128770 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B05C 1/00-1/02

Claims (2)

(57) [Claims] An apparatus for applying a liquid agent such as a sealant or an adhesive to an inner peripheral surface of a circular hole, wherein a hollow shaft is rotatably mounted on a guide block so as to be able to advance and retreat in an axial direction, and a hollow shaft is provided. A first actuator for driving the shaft forward and backward, a second actuator for driving the hollow shaft to rotate in the forward and reverse directions, and a tank for storing the liquid agent, and a lever is rotatably assembled at the tip of the hollow shaft. Set to be on the extension of the axis of
Positioning means is provided for selectively positioning the lever at one of a position where a center line passing through the pivot of the lever coincides with the axis of the shaft and a position where the center line intersects the axis of the shaft at a predetermined angle. At the same time, a third actuator that urges the lever with a spring in a direction in which its center line intersects the axis of the shaft and that pivots the lever against the force of the spring is provided integrally with the hollow shaft, A liquid dispensing apparatus characterized in that a dispensing roller is mounted integrally with the lever on the center line. 2. A device for applying a liquid agent such as a sealant or an adhesive to inner peripheral surfaces of a plurality of circular holes provided in a workpiece, wherein a hollow shaft is rotatable on a guide block and reciprocates in an axial direction. 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 storing the liquid agent are provided, and a lever is rotatably mounted to the tip of the hollow shaft. 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 coincides with the axis of the shaft. Positioning means for selectively positioning the lever at any of the positions intersecting at a predetermined angle is provided, and the lever is biased by a spring in a direction in which the center line intersects the axis of the shaft. And a third actuator for rotating the lever against the force of the spring is provided integrally with the hollow shaft, and an application unit comprising an application roller integrally attached to the lever on the center line of the lever is provided in each of the circular holes. A liquid application apparatus, which is installed correspondingly and operates each application unit in a predetermined procedure.