JPS6017241Y2 - Adhesive applicator for band-shaped sheets - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an adhesive coating device for a belt-shaped sheet.

Conventionally, rods have been covered with a decorative sheet made of vinyl chloride.

This covering work uses a band-shaped decorative sheet,
This is carried out by feeding the belt-shaped sheet to the bar while conveying the bar in the longitudinal direction.

The belt-shaped sheet is fed while being unwound from a roll, and an adhesive is applied to the bar material in the middle of the feeding path.

Conventionally, the adhesive applicator shown in FIG. 1 has been used.

In the figure, reference numeral 1 denotes a feed roller serving as a sheet feeding device, and a strip-shaped sheet 2 is fed on the feed roller 1 in the direction of arrow A.

Reference numeral 3 denotes a coating roll that rolls into contact with the belt-shaped sheet 2, and is rotationally driven in the circumferential direction in synchronization with the feeding speed of the belt-shaped sheet 2.

Reference numeral 4 denotes a doctor roll that contacts the coating roll, and an adhesive reservoir 5 is formed between the doctor roll 4 and the coating roll 3.

In such an apparatus, adhesive is applied to the belt-shaped sheet 2 by the coating roll 3 while the belt-shaped sheet 2 is being fed in the A direction.

However, due to the viscosity of the adhesive, the adhesive becomes stringy at the position P where the strip sheet 2 leaves the application roll 3, which causes the problem that the surface of the adhesive coating layer of the strip sheet 2 becomes fluffy and uneven. was there.

For this reason, when the bar material is coated with the strip sheet 2, the surface of the strip sheet 2 may become uneven or poor adhesion may occur.

In addition, if slack occurs in the belt-shaped sheet 2, for example, if the feeding of the belt-shaped sheet 2 is stopped due to a problem with the device that coats the belt-shaped sheet 2 onto the square rod, the adhesiveness of the applicator roll 3 may cause loosening. There was a problem in that the strip-shaped sheet 2 was wound around the coating roll 3.

Therefore, the purpose of this invention is to create a belt-shaped sheet that can smooth the adhesive application surface so that the amount of adhesive applied can be made uniform over the entire surface, and that can prevent the belt-shaped sheet from getting caught in the application roll when it is slack. An object of the present invention is to provide an adhesive application device.

An embodiment of this invention is shown in FIGS. 2 and 3.

That is, this belt-shaped sheet adhesive application device is provided with a leveling roll 6 located downstream of the application roll 3 in the sheet feeding direction A and in contact with the adhesive-applied surface of the belt-shaped sheet 2; 6 is provided with a presser roll 7 sandwiching and contacting the belt-shaped sheet 2, and a leveling roll moving device 8 for raising and lowering these leveling rolls 6 and presser roll 7 is also provided.

The leveling roll 6 is connected to a drive device (not shown), and is driven to rotate in the same direction as the belt-shaped sheet 2 at a circumferential speed that is slower than the feeding speed of the belt-shaped sheet 2.

9a and 9b are a pair of main body frames, and the coating roll 3 and the dokuroll-4 are supported between the main body frames 9a and 9b.

The leveling roll moving device 8 consists of cylinder devices 10a and 10b installed upward on the rainwater body frame 9ay9b, respectively, and lifting support members 11a and 11b provided on the piston rods of the cylinder devices 10a and 10b, The roll shafts of the roll 6 and presser roll 7 are supported at both ends by elevation support members 11a and llb.

The roll shafts of the leveling roll 6 and presser roll 7 are inserted into cutout openings 12 provided in the main body frames 9a, 9b.

With this configuration, the belt-shaped sheet 2 is coated on the applicator roll 3.
After the adhesive is applied, the smoothing roll 6 comes into contact with the smoothing roll 6, but since the smoothing roll 6 comes into contact with the smoothing roll 6 while rotating at a speed slower than the feed speed of the strip sheet 2, the smoothing roll 6 and the strip sheet 2 are in contact with each other. A slippage occurs between them.

Therefore, the adhesive coating layer of the belt-shaped sheet 2, which becomes fluffy when separated from the application roll 3, is uniformly smoothed by the leveling roll 6.

Also, unlike those that use a fixed scraping board etc. to smooth the surface,
Since the smoothing roll 6 also rotates in the sheet feeding direction A, excessive tension is not applied to the strip sheet 2, so that the strip sheet 2 is not stretched, cut, or otherwise damaged, and the adhesive coating layer is smoothed. Work is carried out smoothly.

In addition, due to failure of the coating equipment in the post-process, etc., the band-shaped sheet 2
When the feeding of the rollers is stopped, the leveling rolls are lowered by the cylinder devices 10a and 10b as shown in a chain shape in FIG.

Thereby, the belt-shaped sheet 2 separates from the circumferential surface of the application roll 3, and the slackened belt-shaped sheet 2 can be prevented from being wound around the application roll 3.

At this time, since the presser roll 7 and the leveling roll 6 descend while sandwiching the strip-shaped sheet 2, the strip-shaped sheet 2 can be separated from the application roll 3 more reliably.

In this way, the smoothing roll 6 is used to smooth the adhesive coating layer of the strip sheet 2 and to clean the strip sheet 2 when a problem occurs.
It is possible to obtain both the effect of preventing the insertion of the screw, and therefore the configuration can be simplified compared to the case where separate means are provided.

As described above, the adhesive coating device for strip-shaped sheets of this invention is provided with a leveling roll that is located on the downstream side of the coating roll and rotates in the sheet feeding direction at a moisture level slower than the sheet feeding speed. The adhesive coating layer of the belt-shaped sheet, which becomes fluffy when separated from the application roll, is smoothed by the leveling roll, and a uniform coating layer can be obtained over the entire surface.

In addition, we have installed a roll moving device that moves the smoothing roll in a direction perpendicular to the sheet feeding direction, so if the feeding of the strip sheet stops due to a malfunction, etc., the smoothing roll can be moved to By separating the sheet from the circumferential surface of the application roll, it is possible to prevent the band-shaped sheet from wrapping around the application roll.

Furthermore, since the leveling roll has both the functions of making the adhesive coating layer uniform and preventing the band-shaped sheet from being rolled up, there is an effect that the structure is simplified.

[Brief explanation of drawings]

Figure 1 is a side view of a conventional adhesive applicator for strip-shaped sheets.
FIG. 2 is a perspective view of an embodiment of this invention, and FIG. 3 is an explanatory diagram of its operation. 1...Feed roller (sheet feeding device), 2...
...Band-shaped sheet, 3... Application roll, 6.
... Leveling roll, 7... Presser roll,
8... Narashi roll moving device, 10a, 10b
・・・・・・Cylinder device.

Claims (1)

[Scope of utility model registration request] A sheet feeding device that feeds the strip sheet in the longitudinal direction, an applicator roll that applies adhesive to the strip sheet in the path of this sheet feeding device, and a coating roller that is installed below the applicator roll in the sheet feeding direction and that applies adhesive to the strip sheet. a leveling roll that contacts the adhesive coated surface of the strip-shaped sheet while rotating in the feeding direction at a circumferential speed that is slower than the feeding speed; and a leveling roll that moves this leveling roll in a direction substantially perpendicular to the sheet feeding direction. An adhesive coating device for a strip-shaped sheet, which is equipped with a roll moving device.