US2356007A

US2356007A - Acid-resistant roll

Info

Publication number: US2356007A
Application number: US452944A
Authority: US
Inventors: Edmond W Sanders
Original assignee: Wingfoot Corp
Current assignee: Wingfoot Corp
Priority date: 1942-07-30
Filing date: 1942-07-30
Publication date: 1944-08-15
Anticipated expiration: 1961-08-15

Description

Aug. 15, 1944. E. w. SANDERS 2,356,007

ACID-RESISTANT ROLL Filed July 30, 1942 f 11111111111. III,

Patented Aug. 15, 1944 ACE-RESISTANT ROLL Edmond W. Sanders, Cuyahoga Falls, Ohio, as-

signor to Wingfoot Corporation, Akron, Ohio, a

corporation of Delaware Application July 30, 1942, Serial No. 452,944

6 Claims. ((1 74-430.?)

This invention relates to guiding and supporting rolls and, more particularly, to idler rolls used in tanks where the rolls are either partly or wholly submerged in a liquid containing acid as for example, in pickling tanks whereby sheet metal is cleansed in a bath containing acid or other reagent in preparation to being galvanized, tin plated or otherwise finished.

It has been found by past experiences that it is quite difficult to produce a roll that would resist the attack of acid, and various acid-resisting coverings were used which would soon come loose or due to wear would expose the core or body of the roll to the attack of the acid. It is essential that a roll of this character be provided with outer covering of a resilient material to prevent marring, scratching or in any way defacing the surface of sheet metal being treated. otherwise any marks impressed on the strip material passing over or under the roll will show up after the plating is completed.

An object of this invention is to produce a roll having a resilient strip contacting covering which extends over the entire surface of the roll body and provided with suitable acid-resisting clamping means to securely clamp the terminating edges of the resilient covering to the ends of the body which will positively prevent any acid or other reagent reaching any part of the roll that would be deteriorated by such contact.

Another object of this invention is to provide a roll having the necessary characteristics of a long-wearing resilient covering vulcanized or otherwise attached toand covering the entire roll body including the end portions, and having acid-resisting sleeves of alloyed metal attached to and covering the projecting spindles or shafts which are capable of being drawn tightly against the terminating edges of the resilient covering by acid-resistant cap screws, and soft metallic washers which act as gaskets to prevent the acidcontaining liquid from contacting any part of the roll beneath such coverings.

These and other objects will be apparent when consideration is given to the following detailed description and the accompanying drawing and claims in which one preferred form of the invention is embodied. In the drawing:

Fig. 1 is a diagrammatic side view showing the roll in position in a pickling tank;

Fig. 2 is a longitudinal sectional View of the roll;

Fig. 3 is an end view of the roll; and

Fig. 4 is a fragmentary sectional view through one end of a roll showing a slight modification of the end sealing arrangement.

Referring to Fig. l, the numeral l0 designates a tank of conventional construction near one end of which is mounted a roll I l rotatable in bearings I 2 to guide a strip of material i3 into the tank. Near the other end a roll l4 mounted in bearings [5 guides the stri out of the tank. In the center of the tank Ill and near the bottom a roll it mounted in bearings l1 guides the strip from roll l2 through the cleaning or pickling solution and out of the bath to roll H. The roll indicated in its entirety by the numeral I6 is the subject of this invention and comprises a tubular metal body l8 having stub shafts or spindles l9 extending from its ends. These shafts or spindles I! are provided with flanges 20 which are fitted into the ends of the tubular body It and become the end portions of said tubular body and may be secured therein by welding or any other desired means. The tubular body is then covered with a resilient acid-proof covering 2| which may be formed of rubber or like material which is immune to acid or other regent which may be used in this particular process, rubber being preferred because it is acid-resistant and adheres well to the surface of the metal body when vulcanized thereon. If a cover is merely cemented to the metal body, it has a tendency to separate therefrom which causes bulging and breaks soon appear which cannot readily be repaired, necessitating a new cover.

The neck portions or spindles l9 may be formed of any suitable metal and are covered by sleeves 22 which may be formed of a suitable acid-resistant alloyed metal and the spindles are provided with keyways 23 and the sleeves are also provided with keyways 24 of the same proportions and the spindles and sleeves are locked in rotating relationship by the keys 25. The inner ends of the sleeves are provided with flanges 26, the inner end surfaces of which are provided with concentric grooves 28 in order to provide a position seal when clamping the terminating edges of the resilient covering against the ends of the roll body, said sleeve being drawn tight against said ends by acid-resistant cap screws 29 which screw into the tapped holes 30 in the ends of the spindles l9. Acid-resistant lead washers 3| are provided under the heads of the cap screws 29 to prevent acid or-other reagents from contacting the inner surface of spindles or the roll body.

In. Fig. 4 this end seal is shown in a slightly modified form, the only difierence being in the arrangement of washers. Instead of the lead washers under the cap screw heads. a rubber washeruisusedasaseaiingmeanswhichhas placed over it acid-resistant metallic washers a to take the thrust of the cap screw head.

From the foregoing description, it will be apparent that a roll constructed in accordance with this invention comprising a resilient acid-proof body covering and spindles covered with acidproof alloyed metal sealed in the manner described will be chemically inert to the cleaning or pickling bath or other corrosive reagent employed in a process of this nature, and will give long uninterrupted service.

Having thus fully illustrated and described. my invention, it will be obvious that modifications and changes may be made therein and I wish to be limited only by the scope of the appended claims.

What I claim is:

1. A roll adapted to guide strip material through a liquid bath comprising a substantially tubular body. spindles extending from the ends of the body. each of said spindles having a flange on one end for securement to the tubular body, a rubber covering for said tubular body, said rubber covering extending over the ends of the body and embracing the spindles with its terminating edges, acid-resisting sleeves attached to said spindles, and acid-resisting clamping means to clamp the terminating edges of the rubber covering against the ends of the roll body.

2. A roll for guiding and supporting a strip of material through a tank containing liquid comprising a hollow cylindrical body, having necks secured in the ends thereof, a sheet of rubber extending over the entire surface of said roll body and having terminating edges adapted'to embrace the extending neck portions, and acid-re-- sistant clamping means to clamp the terminating edges of the rubber covering against the ends of the roll body.

3. A roll for guiding and supporting a strip of material through an acid pickling bath comprising:a cylindrical body, shafts extending from the ends thereof, a rubbercovering extending over the surface of the roll', the terminating edges of said rubber covering embracing said shafts, acidresisting sleeves embracing and attached to said shafts, and acid-resisting clamping means to clamp the terminating edges of said rubber covering against the ends of said body.

4. An acid-resisting roll for guiding and supporting a strip of sheet material through an acid pickling bath, comprising a roll body having shafts extending from the ends thereof, a rubher covering extending over the entire surface of said roll body, and clamping means to clamp the terminating edges of said rubber covering against the ends of said roll,- said clamping means comprising sleeves keyed to said shafts and adapted to be received in supporting bearings, said sleeves being drawn against the terminating edges of said rubber covering by acidresisting cap screws, and acid-resisting washers to prevent acid from entering the inner surface of said sleeve and roll body.

5. A roll for guiding and supporting strip material through an acid pickling bath comprising a tubular roll body having shafts secured therein and extending from the ends thereof, an acid-resisting covering extending over the surface of the roll, the terminating edges of said covering embracing said shafts and the ends of said roll body, acid-resisting sleeves covering said shafts and adapted to rotate in supporting bearings, and acid-resisting clamping means to draw the inner ends of said sleeves against the terminating edges of said acid-resisting covering to clamp said edges against the ends of the roll body.

6. An acid-resisting roll comprising a cylindrical body portion, spindles secured in the ends thereof and extending substantially axially from the ends of said body portion, a molded relatively resilient acid-resistant covering for the body portion including integral end portions covering the ends of the body and extending to points adJacent the spindles, and acid-resistant sleeves secured on the spindles and clamped in sealing relation against the terminating end portions of the covering.

EDMOND W. SANDERS.