JPS6223568Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a continuous coating device for applying an anaerobically curing or other sealant, adhesive, or other coating liquid to the outer periphery of the threaded portions of a large number of small objects such as screws and bolts.

Conventionally, such articles have been transported using belts, etc., but this has the drawback that the belts tend to wear out easily. In addition, the method in which the article is fed onto the coating roll has the disadvantage that the article contacts the coating roll at only one point, resulting in insufficient coating. For this reason, it has been proposed to eject the coating liquid from a nozzle, but the above-mentioned coating liquid, especially one in which a sealant or adhesive is encapsulated in microcapsules, tends to clog the nozzle, making it impractical. In addition, the method in which the coating liquid is drawn up using a dish or the like and dipped into the coating portion of the article requires intermittent operation, resulting in poor efficiency.

The present invention eliminates such drawbacks by providing a pressure roll that feeds the article onto the coating roll using gravity and locks the article upward at the coating position, and this pressure roll is made of a flexible material. The pressure roll accelerates the rotation speed of the article to sufficiently connect the circumferential surface of the article to the coating roll, and the article is The coating liquid is applied uniformly to the circumferential surface of the tube.

An embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in the first diagram, on the base 1 there are a pair of supports 2,
2, the rail support frames 3 and 4 are fixed diagonally downward, and articles 5 are mounted on the inner surfaces of these rail support frames 3 and 4.
A pair of rails 6, 6 supporting and guiding the girders 7, 7...
Fixed by... In addition, in Figure 2, the head 9 of article 5
This is a spacer inserted between the rail support frame 4 and the rail support frame 4.

A locking device 10 is provided at the top of the rails 6, 6 for locking the articles 5 and feeding them out one by one. This locking device 10 is provided with a pair of pins 13 and 14 from above and below a U-shaped frame 12 that is moved up and down by an air cylinder or a solenoid 11. It moves up and down one turn at a time.

A pressure roll 17 for locking the article 5 is provided above between the rails 6, 6 at the application position 16,
The pressure roll 17 is made of a flexible and elastic material such as rubber, and its lower end 18 extends slightly below the upper edge of the article 5 as shown in FIG. drive in the direction. Further, a coating roll 21 whose lower part is immersed in the coating liquid 20 is provided below between the rails 6, 6, and the upper end 22 of this coating roll 21 is positioned between the rails 6, 6 so as to contact the lower surface of the article 5. urge This coating roll 21 is also driven to rotate clockwise in FIG. In the figure, 23 is a tank for the coating liquid, 24 is a stirring blade provided at the bottom thereof, and 26 is a driving motor.

Next, the operation of this device will be explained.

The article 5 supplied to the upper part of the rails 6, 6 rolls downward on the rails 6, 6 and falls, and is first locked by the pin 13 of the locking device 10. When the detection device 15 detects that there is no article, the locking device 10 moves up and down once, and the article 5 falls further downward while rotating, and the pressure roll 1 is placed at the coating position 16.
It is locked by the lower end 18 of 7. Since this pressure roll 17 is rotating clockwise in FIG. 1, it urges the article 5 to rotate, while the application roll 21
The upper end 22 contacts the threaded portion of the article 5 and applies the coating liquid 20 thereto, while bending the pressure roll 17 and sending it out below. The article 5 thus coated with the coating liquid 20 falls while rolling downward on the rails 6, 6, and is discharged from the lower end thereof.

In the above embodiment, the articles are fed one by one using the locking device, but this is not always necessary, and the articles may be directly fed directly to the pressure roll.

As described above, according to the present invention, the article is automatically and continuously fed by gravity, so it is efficient, and since the article is not fed and belts are not used, there is no wear, and because no nozzle is used, the coating liquid is It never gets clogged. Further, in the present invention, a pressure roll is provided above the application position to hold the article, and this pressure roll is made of a soft and flexible material, and its lower end protrudes slightly below the upper edge of the article. Therefore, during coating, the rotation of the article is urged or accelerated, and the coating liquid can be uniformly and sufficiently applied to the circumferential surface of the article.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention.
FIG. 2 is a sectional view taken along the line A--A in FIG. 1. 5... Article, 6... Rail, 16... Coating position, 17... Pressure roll, 18... Lower end of pressure roll, 20... Coating liquid, 21... Coating roll, 2
2...Top end of coating roll.

Claims (1)

[Scope of utility model registration request] A pressure roll is provided above the application position of a pair of rails fixed diagonally downward to hold the article, and this pressure roll is made of a flexible material and its lower end is placed above the article. A continuous coating device that protrudes slightly below the edge and is provided below with a coating roll whose lower part is immersed in the coating liquid, and the upper end of this coating roll is positioned to abut the lower surface of the article.