JPS6240700Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roll coater for coating a web.

[Conventional technology]

Generally, in a roll coater, the web is pressed against a color roll coated with paint using a rubber-wrapped pressure roll so that the paint on the color roll is transferred to the web. In addition, since the presser roll is wrapped with rubber, there is a problem that if the rubber part is coated with paint, the rubber will deteriorate or become easily damaged by the solvent. It is necessary to replace the pressure roll with a longer one, and the rubber portion of the pressure roll is severely worn, so when it is worn out, it is necessary to replace it with a new pressure roll.

However, in the past, the replacement work of removing the old pressure roll and installing a new one was very difficult and time consuming, resulting in long downtime and reduced productivity. was occurring.

[Problem that the invention aims to solve]

The present invention aims to reduce loss time and improve productivity by making it possible to replace the pressure roll in a short time.

[Means for solving problems]

In the present invention, a rotating shaft that can be rotated via a rotating drive unit is provided on a frame that is freely raised and lowered on the upper part of the color roll, and the web is pushed onto the color roll by the rotating shaft. A roll coater is provided with a roll mounting arm that can simultaneously mount a plurality of pressure rolls for mounting, and the roll mounting arm is rotated by rotation of the rotation shaft to replace the pressure roll that performs the pressing action. This is related to.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figures 1 and 2 show an example of the present invention, in which a pressure cylinder 6 is installed in the main body 5 on top of a color roll 4 whose outer peripheral surface is coated with the paint 3 in the paint container 2 by the pick-up roll 1. A rotating frame 8 that rises and falls around a pin 7 is provided, and a rotating shaft 9 is parallel to the color roll 4 at a position directly above the axial center of the color roll 4 at the tip of the rotating frame 8. Moreover, it is rotatably provided.

Further, a plurality of (three in the illustrated case) pressure rolls 11a, 1b, 1 are connected to the rotation shaft 9 via a roll mounting arm 10 fixed to the rotation shaft 9.
1c are provided at equal intervals, and by rotating the rotation shaft 9 via a manual rotation drive unit using the handle 12, for example, the color rolls 4 can be rotated as shown by arrow A.
Pressure rolls 11a, 11b, 11
The position of c can be selected by rotating. Further, a drive device 15 is provided above the color roll 4 in the rotating frame 8, and is connected to the shaft 13 of the pressure roll via a clutch 14 to rotate the pressure roll. 16 in the figure is a bearing;
17 indicates a web.

FIG. 1 shows a state in which the paint 3 is applied to the web 17 by pressing the web 17 against the color roll 4 by the pressure roll 11b. At this time, another new pressure roll 11a, 11c having a different length is attached to the upper roll attachment arm 10. When replacing the pressure roll from this state, first extend the pressure cylinder 6 to release the pressure on the pressure roll 11b, release the clutch 14, and then use the handle 12 to replace the pressure roll 11a or 11c.
Rotate it so that it is on the bottom. Next, the shaft 1 of the pressure roll 11a or 11c that has come to the lower side
After connecting the clutch 14 to the pressurizing cylinder 6
While compressing and applying pressure, the drive device 15 performs rotational driving. As a result, the pressure roll can be replaced in a short time and the next coating operation can be started immediately. Further, the pressure roll 11b that has been moved upward can be replaced with a new roll or another roll with a different length, if necessary, during the coating operation.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and that the number of pressure rolls attached to the rotation shaft via the roll attachment arm may be two or four or more, and that the rotation drive unit can be operated manually using a handle. It goes without saying that an automatic turning drive system using gears, cylinders, etc. may be used instead, and that various other changes may be made without departing from the gist of the present invention.

[Effect of idea]

As described above, according to the roll coater of the present invention, since a plurality of pressure rolls are provided and can be rotated, the pressure rolls can be replaced in a short time simply by performing the above-mentioned rotation. Therefore, the excellent effect of reducing the loss time due to replacement and improving the productivity of coating work can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view showing one embodiment of the present invention, and FIG. 2 is an enlarged view taken in the direction of the arrows in FIG. 1. 4 is a color roll, 6 is a pressure cylinder, 8 is a rotating frame, 9 is a rotating shaft, 10 is a roll mounting arm, 11a, 11b, 11c is a pressure roll, 12 is a handle (swivel drive part), 15 is a drive device , 17 indicates a web.

Claims (1)

[Scope of utility model registration request] A rotation shaft that can be rotated via a rotation drive unit is provided on a frame provided on the upper part of the color roll so as to be able to rise and fall freely, and a plurality of rotation shafts are provided on the rotation shaft for pressing the web against the color roll. A roll coater characterized in that it is provided with a roll mounting arm that allows multiple pressure rolls to be mounted at the same time.