DE202007007040U1 - Discharge and collecting device for surplus material from commissioned works - Google Patents

Abstract

Laxative and Catcher for excess material from a roll of commissioned work, which is a catching device (5) for overflowing excess material have below the roller, characterized by a to the axial ends of the roller (1) arranged, extending in the circumferential direction and in cross-section approximately U-shaped Channel (6), the overflowing excess material laterally receives and in the collecting device (5) derives.

Description

at Contractors for coating webs such as Paper webs with lacquers or resins for impregnation or other purposes is the order material over an applicator roll on the over a support roller guided material web applied. The application material can either be on the applicator roll fed and transferred from this to the web or the application material can be ahead of the applicator roll in the nip area between the applicator roll and on be fed to the support roller lying web.

There the material web over their entire width evenly with coated and / or soaked in the coating material are the rollers always slightly wider than the material web and the order material is in excess or wider applied as the material web.

The lead away and collecting surplus supplies takes place with the help of scrapers or simply in the overflow, so by lateral overflow of the excess order material over the Web edges and the roll edges. The overflowing or excess application material removed by scrapers is collected in drip trays and returned.

scraper have because of the necessary touch and the resulting friction has the disadvantage that wear both is generated on the scrapers and on the rollers. The easy overflow of excess order material leads to significant contamination of bearings and components.

The Problems become particularly serious when the job material contains abrasive particles like for example corundum. This is the case when, for example, as abrasion-resistant cover layer of laminates, in particular floor laminates, paper or material to be used is impregnated and coated. In such cases The abrasive particles in the application material generate massive wear on scrapers and rolling. Get overflowing Application material with such abrasive particles in stock, is the Wear especially harmful.

Of the Invention is therefore based on the object, the discharge and Collecting excess order material to improve at commissioned works.

These Task is carried out according to the invention solved specified in claim 1 arrangement.

The inventive solution exists in that at the roller end faces in each case a drain channel element is arranged, in which overflowing Order material expires and inspected in an underlying tub or the like. is directed. Preferably, the applicator has the application material a width slightly beyond the roll width, and on each side of a guide element, the laterally overflowing Derives application material in the channel element.

One embodiment The invention is illustrated in the accompanying drawing, which in a perspective view of the axial end portion of a roller of a Commissioned work shows.

The drawing shows a support roller 1 with a feeding device 2 , The material web to be coated or impregnated passes over the upper side of the carrier roll 1 between this and the feeder. An application roller arranged above the carrier roll, which serves to distribute the application material, is not shown. By means of the feeder, application material is applied to the upper side of the material web, not shown, in the nip between the support roller 1 and the applicator roll abandoned.

At the visible front end of the carrier roll 1 is a bearing arrangement 3 arranged for storage of the roller shaft. Below the support roller is a catcher 5 intended for excess order material.

According to the invention, the carrier roll is provided on each roll end side 1 a gutter element 6 arranged, which is axially close to the support roller 1 connects and forms at its periphery a cross-sectionally approximately U-shaped drainage channel. The to the carrier roll 1 connected wall of the gutter element 6 may be flush with the circumference of the roll or slightly set back in radius. The outer axial wall 6a of the gutter element 6 can be set back a little further radially. This wall must only have a sufficiently high height in the radial direction, which ensures that no running application material axially over the channel element 6 overflows.

The applicator 2 has a guiding element on each side 7 that is radially above the channel element 6 is arranged, in such a way that it is axially from the outer wall 6a of the gutter element 6 to the roller 1 is offset. This guiding element 7 Make sure there is no overflowing job material over the outer wall 6a of the gutter element 6 can spill over.

Claims (3)

Excess material removal and catching device from a roll of commissioned works, comprising a collecting device ( 5 ) for overflowing excess material below the roller, characterized by a at the axial ends of the roller ( 1 ) arranged in the circumferential direction and in cross-section approximately U-shaped channel ( 6 ), which receives laterally overflowing excess material and into the collecting device ( 5 ). Apparatus according to claim 1, wherein the channel is formed in a channel element ( 6 ) is formed. Apparatus according to claim 1 or 2, wherein a feeding device ( 2 ) for applying the application material to the roller ( 1 ) or a material web passing over the roller laterally beyond the axial ends of the roller ( 1 ) and in each case a laterally delimiting guide element ( 7 ), which above the channel ( 6 ) is arranged in order laterally on the feeder running off application material into the channel ( 6 ).