JPH05269417A - Immersion type equipment for coating cylindrical body with adhesive - Google Patents

Abstract

PURPOSE:To leave the part uncoated with an adhesive in the upper part of the external surface of a cylindrical body and on the other hand, to automatically coat the whole part of the internal surface with the adhesive in an equipment for coating the adhesive wherein the cylindrical body is placed oh the freely elevating/lowering pedestal of a work so that the axial line of the cylindrical body is directed in the vertical direction and then immersed in the adhesive in a tank and both the internal and external surfaces of the cylindrical body are coated with the adhesive. CONSTITUTION:A brush 19 is fixed on the pedestal 15 of a work so that the bristles of the brush touch the upper part of the internal surface of a cylindrical body W. A chuck 21 is provided freely movably upwards and downwards in the upside of the pedestal 15 of the work. The chuck 21 holds the upper part of the cylindrical body W from the outside and is rotated around the centerline of the cylindrical body W by driving.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive applying device for applying an adhesive to the outer surface of a cylindrical machine part (cylindrical body) covered with rubber by dipping.

[0002]

2. Description of the Related Art A cylindrical machine part (cylindrical body) coated with rubber is coated with an adhesive on its surface in order to improve its adhesiveness with rubber. This adhesive is composed of a first liquid and a second liquid. The first liquid is applied and dried, then the second liquid is applied and dried, and then rubber is coated and vulcanized. Then, as a device for applying the adhesive to the surface of the cylindrical body, the cylindrical body is immersed in the adhesive in the tank by mounting it on a work pedestal that can be raised and lowered so that its axis is oriented vertically. It is known that an adhesive is applied to both inner and outer surfaces of the cylindrical body.

However, depending on the use of the cylindrical body,
While the adhesive may be applied to the entire area of the inner surface, the adhesive may be applied only to the lower portion while leaving the upper portion on the outer surface.In such a case, conventionally, the adhesive was applied to the work cradle above the liquid surface of the adhesive. Place the cylinder on it, then lower the work cradle halfway to immerse only the lower part of the cylinder into the adhesive, and then raise the work cradle to take out the cylinder, and remove the cylinder on the upper part of the inner surface of the cylinder. The adhesive was manually applied to the applied part.

[0004]

In the conventional immersion type adhesive application device, since the work cradle only vertically supports the work, that is, the cylindrical body, the adhesive is not applied to the upper part of the outer surface of the cylindrical body. In order to apply the adhesive to the entire inner surface while leaving a part, it is necessary to partially apply the adhesive manually, and the application / drying of the first liquid of the adhesive and the application / drying of the second liquid are continuously performed. It was impossible to convert.

According to the present invention, it is possible to automatically apply the adhesive to the entire inner surface while leaving a portion where the adhesive is not applied on the upper surface of the outer surface of the cylindrical body, thereby applying and drying the first liquid of the adhesive. Further, the present invention provides a dipping-type adhesive application device that enables continuous application and drying of the second liquid.

[0006]

SUMMARY OF THE INVENTION An immersion type adhesive application device for a cylindrical body according to the present invention places an adhesive in a tank on a work pedestal which can be lifted and lowered so that the axis of the cylindrical body is oriented vertically. In the immersion type adhesive application device of the cylindrical body, which is soaked in, and the adhesive is applied to both inner and outer surfaces of the cylindrical body,
A brush can be fixed to the work cradle so that the bristles are in contact with the upper part of the inner surface of the cylinder on the work cradle, and the upper part of the cylinder can be clamped above the work cradle from the outside, and It is characterized in that a chuck that can rotate about the center line of the cylindrical body by driving is provided so as to be able to move up and down.

[0007]

[Function] Dip the work cradle into the adhesive together with the brush,
After impregnating the brush with the adhesive, the work pedestal and the brush are lifted to stand in the air. On the other hand, when the cylindrical body clamped by the upper chuck is lowered together with the chuck and the cylindrical body is placed on the work cradle, the tip of the brush is brought into contact with the upper part of the inner surface of the cylindrical body, and the chuck is rotated in this state, the chuck The adhesive impregnated in the brush is applied to the upper part of the inner surface of the cylindrical body sandwiched by the.

After the above-mentioned coating, the rotation of the chuck is stopped and the chuck is opened to separate the cylindrical body from the chuck. The cylindrical body is lowered together with the work cradle to the middle of the lowering stroke, and the upper portion of the cylindrical body is emptied in the air. When only the lower part is soaked in the adhesive so as to remain, the adhesive is applied to both the inner and outer surfaces of the lower part of the cylindrical body, and as a result, a cylinder having the adhesive applied to the entire area except the upper part of the outer surface is obtained. Then, the work cradle is lifted again, the chuck holds the cylinder, and the chuck is lifted together with the cylinder, while the work cradle and brush are submerged in the adhesive to stand by, and the brush is immersed in the adhesive. , Its drying is prevented.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 10 is an adhesive tank, in which a liquid adhesive S is put, and the height of the liquid surface is kept constant. An immersion air cylinder 12 is fixed to a frame 11 located next to the adhesive tank 10 with a piston rod 13 facing upward, and one end of an immersion arm 14 is fixed to the tip of the piston rod 13 so that the immersion air cylinder 12 is fixed. By driving, the height of the dipping arm 14 is changed to three stages of the upper, lower, middle and lower ends of the lifting stroke. The immersion arm 14 includes an upper horizontal portion 14a extending from the tip of the piston rod 13 toward the adhesive tank 10 side,
The vertical portion 1 extending downward along the inner surface of the side wall of the adhesive tank 10.
4b and a lower horizontal portion 14c that extends horizontally from the lower end thereof along the bottom of the adhesive 10. The lower horizontal portion 14b
Two work pedestals 15 are fixed to c.

As shown in FIG. 2, the work cradle 15 is formed in a cylindrical shape having an outer diameter substantially the same as the inner diameter of the cylindrical body W, and the lower flange of the cylindrical body W is placed on the upper end portion of the cylindrical body. Three horizontal pins 16 for supporting W are radially projected, and three vertical pins 17 for fitting and positioning inside the cylindrical body W are provided on the upper surface of the work receiving base 15.
Projected at 20 degree intervals. Then, the work cradle 1
A column 18 is vertically projectingly provided at the center of the upper surface of 5, and a support cylinder 20 of a brush 19 is fitted and fixed to the upper end of the column 18. This brush 19 is provided when the cylindrical body W is placed on the work cradle 15.
The bristles of the brush 19 are provided at a height and an outer diameter in contact with the upper portion of the inner surface of the cylindrical body W.

The chuck 21 located above the work receiving base 15 extends downward and is opened and closed by air operation.
A book claw 22 is provided, and the lower end of the claw 22 holds the cylindrical body W from the outside. The claw 22 of this embodiment has an arcuate recess 22a suitable for holding the round upper end of the cylindrical body W and a triangular recess suitable for holding the flange at the lower end of the cylindrical body W. 22b are formed vertically side by side.

Two chucks 21 (see FIG. 1) are provided horizontally corresponding to the work holder 15.
A motor gear 27 fixed to an output shaft of a chuck driving motor 26 fixed to a horizontal plate 30a of an elevating frame 30 via a bearing 25 and fixed to a back plate 30b of the elevating frame 30, and the motor gear. 27
It is driven by a large gear 28 that meshes with and rotates about a vertical axis. Reference numeral 23 is an air actuating portion for opening and closing the claw 22, and 24 is a rotary pipe joint for supplying air to the air actuating portion 23.

The elevating frame 30 includes the horizontal plate 3
0a and a back plate 30b and an integral side plate 30 that intersects vertically
The slide block 31 fixed to the rear surface (right side in the drawing) of the side plate 30c is slidably fitted to the vertical guide rail 33 fixed to the horizontal slide base 32, and The downward piston rod 36 of the chuck lifting air cylinder 35, which is attached to the upper part of the slide base 32 via the bracket 34, is the front side connecting metal fitting 37 of the side plate 30c.
Connected to. Then, the sliding block 38 fixed to the back surface of the horizontal sliding base 32 is slidably fitted to the guide rail 39 in the front-rear direction (direction perpendicular to the paper surface).

In the above structure, when the horizontal slide table 32 is located in front of the adhesive tank 10, the cylindrical body W is supplied under the chuck 21 in the raised position to be clamped by the claws 22, and then the horizontal direction. The slide table 32 is moved to above the adhesive tank 10 (see the solid cylinder in FIGS. 1 and 2). on the other hand,
By driving the dipping air cylinder 12, the dipping arm 14 located at the lower end of the elevating stroke is raised to the upper end of the elevating stroke, and the work cradle 15 immersed in the adhesive S in the adhesive tank 10 is moved to the position shown in FIG. As shown by the solid line, the adhesive S is pulled up above the liquid surface. Then, when the chuck lifting / lowering air cylinder 35 is driven to lower the chuck 21 via the lifting / lowering frame 30, the cylindrical body W under the chuck 21 is covered with the brush 18 on the work receiving base 15.

Next, when the chuck driving motor 26 is driven for a predetermined time, the two cylindrical bodies W rotate at the same time, and the adhesive S impregnated in the brush is applied to the upper portion of the inner surface of the cylindrical body W. After the chuck driving motor 26 is stopped, the air actuating portion 23 of the chuck 21 is driven to open the claw 22 to separate the cylindrical body W from the chuck 21, while driving the dipping air cylinder 12 to receive the workpiece. When the table 15 is lowered to the middle of the ascending / descending stroke and the lower part of the cylindrical body W is immersed in the adhesive S as shown by the chain line in the lower part of FIG. 2, the adhesive is applied to both the inner and outer surfaces of the lower part of the cylindrical body W, As a result, the cylindrical body W coated with the adhesive S is obtained in all regions except the upper portion of the outer surface.

Then, the work cradle 15 is again attached to the cylindrical body W.
Together with the chuck 2
The cylindrical body W is clamped by the claw 22 of No. 1, and then the chuck elevating air cylinder 35 is driven to raise the cylindrical body W through the elevating frame 30 and the chuck 21, and then the horizontal slide base 32 is set to the drying section. The cylinder W is moved and delivered to the drying conveyor, and the empty chuck 21 is returned to the supply side of the cylinder W by the horizontal moving table 32. On the other hand, the immersion air cylinder 12 is driven to lower the work cradle 15 and the brush 19 to the lower end of the lifting stroke, and the brush 19
Is submerged in the adhesive S and kept waiting until the next application.

[0017]

As described above, the immersion type adhesive applicator of the present invention uses a brush on a work cradle for placing a cylindrical body so that the tips of the bristles come into contact with the upper part of the inner surface of the cylinder on the work cradle. Since a chuck that can be fixed and holds the upper part of the cylindrical body from the outside above the work cradle and that can be rotated around the center line of the cylindrical body by driving is provided so as to be vertically movable. Position the work cradle above the liquid surface of the adhesive, cover the brush with the cylindrical body clamped by the chuck, rotate the chuck, then release the chuck and immerse the lower part of the cylindrical body in the adhesive. With this, the adhesive can be applied to the entire other region of the cylindrical body while leaving the upper portion of the outer surface thereof. Since the above-mentioned application does not require manual work and all the application operations can be performed automatically, it is possible to automate all the steps of application / drying of the first liquid and application / drying of the second liquid. it can.

[Brief description of drawings]

FIG. 1 is an overall front view of an embodiment.

FIG. 2 is an enlarged view of a main part for explaining the operation of FIG.

[Explanation of symbols]

 W: Cylindrical body S: Adhesive 10: Adhesive tank 12: Immersion air cylinder 14: Immersion arm 15: Work stand 19: Brush 21: Chuck 22: Claw 25: Bearing 26: Chuck drive motor 30: Lift frame 35: Air cylinder for lifting chuck

Claims (1)

[Claims] 1. A cylindrical body is placed on a work pedestal which can be raised and lowered so that the axis of the cylindrical body is oriented vertically, and the cylindrical body is dipped in the adhesive in the tank to apply the adhesive to both the inner and outer surfaces of the cylindrical body. In the immersion type adhesive application device for a cylindrical body, a brush is fixed to the work holder so that the tips of the bristles come into contact with the upper part of the inner surface of the cylinder on the work holder, and the cylindrical body is fixed above the work holder. 1. An immersion adhesive coating device for a cylindrical body, comprising a chuck that can clamp the upper part from the outside and that can be rotated around the center line of the cylindrical body by driving so as to be movable up and down.