US2275794A - Multilime coating and drying machine - Google Patents

Description

March 10, 1942.

'P. M. MURPHY MULTI-LIME' comma ANDIDRYING MACHINE Filed Oct. 25, 1940 3 Sheets-Sheet l zjyeflcz-q V PeZerMMur bby Z7 I ZZfi- I March 10, 1942. EM. MURPHY 2,275,794

MULTI-LIME COATING AND DRYING MACHINE Filed Oct. 25, 1940 S Sheets-Sheet 2 eter/VL Mzr phy March 10, 1942. P, MURPHY 2,275,794

' MULTI-LIME COATING AND DRYING MACHINE I Filed Oct. 25', 1940 3 Sheets-Sheet 3 & 3 V 7 R 9 0 ERR 1/1 5 I 5 v P rw/ 5W f 1 m .vaoml 4 ,LM 5 4 ,v M .Z l M ma v Patented Mar. 10, 1942 MULTILIME con'rmc AND DRYING MACHINE Peter M. Murphy, Sterling, western Steel and Wire a corporation of Illinois Application October 25, 1040, Serial No. 362,723

UL, assignor to North- Gompan-y, Sterling, 111.,

Claims. (Cl. 205-16) This invention relates to descaling, cleaning and multi-coating of elongated metal material such as metal rods, metal strips and the like.

More specifically, this invention relates to the 1 ing and drying Another objectof the invention is to provide a compact, inexpensive'descaling, cleaning, coat,-

. ppara u and the like materiali" multilime coating of elongated metal material 6 Other and further objects of the invention will to provide a built-up heavy lime coating on the be apparent to those skilled in the art from-the material. v following detailed descriptions of the annexed This application is a continuation in part of sheets of drawings which disclose preferred my copending application entitled: Descaling, forms of appara us forming part of this invencleaning, and coating machine, Serial No. tion.

346,028, filed July 17, 1940.

In my ccpending application above referred to,

there is described and claimed a descaling, cleaning and coating machine which mechanically 'fiexes elongated metal material such as metal rod to crack oil and loosen mill scale thereon. The machine is also equipped with a lime coating device for protecting the descaled rod against oxidation. The lime coating device includes a drum rotatably mounted in a tank containing lime water. The drum receives the rod for a plurality of turns therearound and is positively driven to pull the rod through a sheave-type mechanical descaler. As the drum rotates it carries the rod therearound into and out of the lime bath. When operating at high speeds, however,

the coating on the rod does not have sufiicient time to completely dry between immersions in the bath.

The present machine now provides for a more thorough drying of the rod between immcrsions in the lime bath.

Therefore, according tothis, invention, the

lime-coating apparatus is equipped with a drier,

preferably in the form of anelectrically heated open-ended tube. The rod wrapped aroundthe drum in the lime tank is directed for any desired number of passes through the heated tube. Thus the rod can be multi-coated in one lime bath and dried between coatings So as to build up a thicker or heavier lime coating on the rod.

It is, then, an-object of this invention to improve the machine described and claimed in my copending application Serial No. 346,028 for producing a heavier lime coating on elongated. metal rods.

Another object of this invention is to provide inexpensive apparatus. for descaling, cleaning and multi-coating elongated metal rods; strips and the like.

While the invention will be hereinafter de-. scribed in connection with the descaling, cleaning, coating, drying and drawing of metal rod it shouldbe understood that machines of this invention are adapted for use with any elongated flexible metal material such as wires, strips, ribbons and the like.

On .the drawings:

Figure 1 is a side elevational view of a descaling, cleaning, coating and drying machine according to this invention.

Figure 2 is a rear end elevational view of the machine shown in Figure 1 taken along the line II-II of Figure 1.

Figure 3 is a top plan view cf,the machine shown in Figure 1.

Figure 4 is a transverse vertical fragmentary cross-sectional .view with parts shown in end elevation of a slightly modified form of apparatus according to this invention. I

,Figure 5 is a fragmentary plan viewywith p'arts broken away and shown in horizontal cross A further object of this invention is to provide stressed condition to any metal fabricating apparatus, such as drawing diesand the like.

A further object of this invention is to provide a process of increasing the thickness of the lime coating on a metal rod without necessitating the use of more than one coating bath.

section, of the machine shown in Figure 4.

I Figure 6 is a horizontal cross-sectional view taken through a different type of heater useful on the apparatus of this invention and illustrating the rod passes through the heater.

As shown on the drawings:

In Figures 1 to 3 inclusive the reference character A designates a suitable'frame supporting a vertical plate l0 and a horizontal plate II. An apertured guide block 12 is mounted on the inlet end of the plate l0 and receives a rod R therethrough. Guide rollers l3 are rotatably carried on one vertical face of the plate l0 in superimposed relation and receive the rod R therebetween.

Three peripherally grooved'sheaves M are rotatably mounted in spaced relation on the same face of-the plate I0 carrying the guide rolls l3. The rodR passes from the guide rolls l3 over the sheaves M.

The plate l0 has cut-out portions we extending from the tcp thereof into spaced relation from the bottom as best shown in-Figure 1. Additional peripherally grooved sheaves l5 are rotatably mounted on blocks I6 slidable in the cutout portion 10a. The sheaves l5 are thus positioned between the sheaves Id.

The slide -blocks I 6 can be forced down toward for metal rods, strips,

"longitudinal relation from the tom of the tank.

inlet-pipe--43.--The lime water can be and immerse the rod in the bottoms of the cut-out portions Illa. by means of adjusting bolts H which are. threaded through bars |8 bridging the open tops of the cut-out portions Illa.

The rod'R thus passes over the sheaves l4 and under the sheaves l5 and is flexed or bent in a vertical plane in amounts controlled by thepositions of the adjustable sheaves l5.

The rod R, after passing over the last sheave N on the plate |||,.is next directed over horizontally mounted sheaves l9 rotatably carried on the horizontal direction, or at right angles to the flexing effected by the sheaves l4 and I5.

The rod R is therefore flexed in a plurality of directions and mill scale formed on the rod by the usual hot rolling operation in the preparation of the rod is loosened and cracked off.

As best shown in Figures 1 and 3, a guide block 24 is mounted on the end of the plate II and receives'the flexed rod R therethrough from the last sheave l9. V

A tank 25 is suspended in a frame 13 in spaced frame A The frames A and B can be connected together with 1 a bracket C (Figure 1).

The tank 25 is divided by a partition wall 26 into a compartment 21 in longitudinally aligned relation with theguide block 24 and a compartment 28 in offset relation from the guide block as best shown in Figure 3. p The framework B carries bearing blocks 29 on each side of the tank 25 and a shaft 38 extends across the open top of the tank 25. A drum 3| is secured on the shaft 30 and projects into the compartment 21 of the tank. A second drum 32 is also secured on the shaft 38 and projects into the compartment 28 of the tank. A gear 33 is secured on the free end of the shaft 30 at the rear side of the machine and meshes with a pinion 34 carried by a stub shaft 35 which is rotatably mounted in a bearing housing 36 carried by the frame B. A sprocket 31 is secured on the stub shaft 38 and is driven by a chain 38 from a motor 39 as best shown in Figure 3. The drums 3|. and 32 are thus positively driven.

The compartment 21 of the tank 25 is supplied with metal cleaning solution such as caustic alkali through a feed pipe 48. The feed can be controlled with a valve 4| in the feed pipe 40 and solution can be drained from the compartment 21 by removing a drain plug 42 at the bot- The compartment 28 of the tank so is supplied with lime water through a feed pipe 43 andthe 'feed is controlled by a valve 44. Obviously lime could be directly introduced into the compartment 28 and water could be supplied through the removed from the compartment 28 by removal of a drain plug 45 in the bottom of the tank.

The red R from the guide 24 is directed around the drum 3| for a plurality of turns such as, for example, ten or twelve turns. Since the drum is positively driven from the motor 39 it will pull the rod through the descaling sheave assemb y the caustic alkali solutlon in the compartment 21. A plurality of immersions will be effected since, as shown, the top portion of the drum is above the tank 25.

After passing around the drum 3| for the desired number of turns, the rod is directed upwardly over a sheave 46 supported on a shaft 41 extending longitudinally of the machine. The rod then passes downwardly from the sheave 46 and around' the second drum 32 for a plurality of turns. The drum 32 is driven with the drum 3| from the motor 39 and carries paddles 32a around the periphery thereof to agitate the lime in the compartment 28. The rod on the drum 32 is thus immersed for a plurality of times in the lime water.

In accordance with this invention the rod, after passing around the drum 32 for several turns, is directed upwardly from the drum over sheaves 48 and 49 mounted on shafts 58 and 5| respectively, above the shaft 41 and extending at right angles to the shaft 41 or transversely across the width of the machine. The rod thus passes upwardly from the drum 32 above the sheave 46 and over the sheaves 48 and 49. The rod is then directed downwardly through an open ended vertical tube 52, passes through this tube, and is guided by another sheave 53 back onto the drum The interiorof the tube 52 is heated by an electric resistance element 54. vIn this manner the rod is coated with lime as it passes on the drum 32 into and out of the lime bath in the compartment 28. The coating on the rod is then dried as the rod passes through the tube 52'. The

dried and coated rod is again passed around the drum 32 and re-immersed inthe lime bath to receive an additional coating thereon; After passage around the drum for several more turns,

the rod is directed off of the drum over a sheavev 55 rotatably carried by-a bracket 58 secured on the horizontal plate II as best shown in Figure 3. The rod then passes upwardly to a sheave 51 rotatably mounted on a shaft 58 extending across the width of the machine above the descaling assembly as shown in Figure l. The sheave 51 is positioned at a higher level than the sheaves 48 and'49 so that the rod can pass horizontally above those sheaves and thence over another sheave 59 and again into the heated tube 52 where the second coating thereon is dried.

After the second passage through the tube 52 I the rod is directed under a sheave 60 rotatably lubricant en route to the die 52.

carried from the framework B. A drawing die box 6| next receives the rod. This box 6| carries a replaceable reducing die 62 for, drawing the rod down to wire size. As best shown in Figure 3, a wire drawing .drum 63 pulls the drawn wire through the die 62. This drum receives the drawn wire for a plurality of turns therearound and is driven from the same motor 39 that drives the drums 3| and 32. A portion Bla of the die box 6| ahead of the die 62 can be filled with drawing die lubricant such as soap compositions or the like and the rod R passes through this The heavy lime coating on the rod not only serves to protect the rod against oxidation but also serves as a lubricant-retaining medium to pick up and retain lubricant from the die box portion 6|a. This greatly-facilitates the drawing operation.

Since the drums 3| and 32 are driven in timed relation with the wire drawing drum 63, the rod entering the drawing die 62 is not under tension. As a result, breakage is materially .decreased and.

, improved metallurgical otherwise. than properties can be developed.

In the embodiment shown in Figures 4 and 5, parts identical with parts described in Figures 1 to 3 have been marked with the same reference numerals.

In Figures 4 and 5 the rod R is directed from the drum 3| over the sheave 46 and around the drum 32 for several turns. The rod is then led off of the drum 32 and over the first set of pulleys 68 and for passage through the heating tube 52. The rod is again wrappedaround the drum 32 for several turns and is again directed over an additional set of shafts as the first mentioned pulleys and again passes through the heating tube.

After the second passage through the heating tube the rod is wrapped around the drum 32 for Figures 1 to 3.

In this modification, therefore, the rod 'is subjected to three drying operations and is re-immersed after the first two drying operations.

In Figure 6 there is illustrated a modified dry- -.ingtunnel 70 of rectangular shape. This drycan be used, and that the rod can be subjected to as many drying operations as desired.

This invention therefore now provides an implied with live steam.

It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention and it is,therei'ore, not the purpose to limit the patent granted hereon necessitated by the scope of the appended claims.

I claim as my invention:

pulleys and 49 on thesame rial drum to the drawing die in a from axial tension.

'2. A lime adapted to hold a lime bathfor lime coating the wire on the drum, and means driving said drum to pull the wire through the descaler and the feeding the descaled limed lime bath and for wire' to the drawing die ina condition substantially free from axial tension.

4. In a mechanical embly including descaling sheaves for flexing wire to crack ofl scale therefrom together with drawing die having wire to the drawing die tiallyfreefrom'axial v 5. In a mechanical descaler: and elongated 1. In a lime coating device i'or elongated metal material lime water, and a for receiving a plurality of .turns of elongated metal material therearound to immerse the material in the lime bath, the improvements which comprise guide sheaves receiving and guiding the elongated material drum to produce an elongated run of the material, a heating tunnel surrounding said elongated run in spaced relation therefrom, other guide sheaves for receiving and guiding the material away from said drums, a drawing die for receiving the material from said last guide sheaves,

a drawing drum for receiving the material from said die, and means for driving said drawing .drum and said tank'mounted drum in timed relation whereby the metal material is lime coated and dried and is fed drum rotatably mounted in from and back to said metal material, the

by the tank mounted a drawing die,' the improvement which comprises a lime coating apparatus between the descaler and a tank with separated com'- partments therem for holding liquid baths intension.

metal material fabricating assembly including descaling sheaves for flexing elongatedmetal material to crack of! scale therefrom together with a fabricating vapparatus for acting on elongated improvement which comprises a lime coating device between the descaler. and fabricating apparatus, said device havin'ga drum receiving therearound a plurality of tums' of the elongated metal material from the descalthe drum therein and adaptgated metal material on the drum, and means driving the drum the. descaler and the lime coat to the fabricating apparatus in a condition iree descalerand wire drawing to pull the elongated metal.

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