US2022082A - Die for two-roll corrugating machines - Google Patents

Description

Nov. 26, 19 5. I J. c. FISHER El AL 2,022,032

DIE FOR TWO-ROLL CORRUGATING MACHINES Filed March 8, 1955 2 Sheets-Sheet l W ATTORNEY Nov. 26, 1935. I Q s R ET AL 2,022,082

DIE FOR TWO-ROLL CORRUGATING MACHINES Filed March 8, 1955 2 Sheets-Sheet 2 INVENTORS Jofifi C M M a. M,

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/ ATTORNEY Patented Nov. 26, 1935 UNITED STATES PATENT OFFICE aozzpsz Application March 8, 1935, Serial No. 10,036

6 Claims, (01. 153-77) p This invention relates to new and useful improvements in dies for two-roll corrugating machines. I

' It is the primary object of the invention to provide adjustable dies for use on two-roll corrugating machines, and more particularly adjustable crimping dies for making V-crimp roofing more accurate in pitch, with more concise and clear shaped Vs, and with more attrac- 10 tive and uniform radii at the tops andbottoms of the Vs.

Variations in the temper of the material resulting from the different methods and processes employed by various sheet makers, cause one manufacturers sheets to be harder and possess more springiness than the sheets made by another manufacturer. Hence it is impossible for a die manufacturer to make for all customers, standard sets of V crimproofing dies that will place the Vs in exactly correct locations on the sheets unless these sheets are made by the same methods and processesand have the same physical properties. y

In order to obtain the exactly correct spacing of all the VS in the sheet regardless of the variations in the temper of the material, it is necessary that the second and third V-inserts be arcuately adjustable a small amount. It is therefore one principal objectof our invention to 39 provide for V'- crimp roofing dies that are required to operate upon sheets of different degrees of hardness, floating and bolted inserts that are adapted to an easy and quick arcuate adjustment in the field to give the correct location of the vs in the sheets.

Another object of our invention is to provide V-crimp roofing dies that are interchangeable from one roll to the'other.

It is another object of our invention to provide 40 a roll in which a single, second or middle V- crimp die may be easily replaced by a floating double V-die to form with the other roll a6 V-crimp roofing die after a double'v has been The floating steel pieces inserts, Figure-4 is a plan view of the same. Figure 5 is a side viewof one of the middle, single V, adjustable dies. Figure 6 is a plan view of the same. Figure '7 is a side view showing the double V inserts in the middle positions on the 5 top and bottom rolls to form a six V-crimp die. And Figurev 8 is a plan view of a piece of 5-V v crimp roofing,a product of our machine.

Referring to the accompanying drawings for a detaileddescription of our invention, the, nu- 10 meral I designates a two-roll corrugating machine. of a well-known type. Suitably journaled for co-acting rotation in this machine is a top roll 2 and a bottom roll 3. In the present instance each roll has six sides. 15 Inthe first die 'plate 4 in the bottom roll 3 there isformed an axial peripheral recess 5 that receives'a steel piece 6 which is bolted to the die plate. The steel piece 6 on whose outer surface there is formed a single inverted V projection, carries a plurality of spaced pins 1 on which a seri'es'of shorter steel pieces 8 are slidably mounted within the-recess 5. Each one of these pieces is" formed at its outer periphery with an inverted ,V -projection which is immediately adjacent the similar projection on the fixed piece 6. The pieces 8 float on the pins 1 in relation to the pitch or spacing between them and the bolted piece 6, so that pieces 8 may float the necessary amount to effect the proper bite on the 3 incoming fiat sheet (not shown) and move the bite f it toward the bolted steel piece 6. In doing so, itwill fold-rather than draw, the metal in forming the first double V in the five crimp sheet, thereby greatly reducing the likelihood of 35 cracking and peeling the spelter on the sheet near and at the bends or crimps.

Thefloating steel pieces 8 are gently held in a yielding position away from the bolted steel 0 piece 6 by a number of small helical springs 9 'whose ends fit in alined recesses in the floating pieces and the bolted piece.

a 8 are actuated by their meshing with a steel female double V-piece I8 bolted in a recess adapted to receive it in the first die plate ll in the top roll 2. The proper 'relation of the first top and the first bottom steel pieces may be obtained through the conventional method of radially adjusting the top roll neck 52 by conventional adjusting mechanism [3 on the top roll end gear.

As the rolls 2 and 3 revolve, advancing the sheet toward the steel inserts in the second or middle top and bottom die plates l4 and I 5 respectively, the floating steel pieces 8 in the 55 first bottom die plate 4 are automatically reset by the gentle pressure of their respective springs 9.

The second die plates l4 and I5 carry steel V inserts it and H respectively. These inserts are arcuately adjustable in relation to theirrespective die plates by the following means, for the purpose of locating the single or middle V in the exact position required on the sheet.

Formed in the second die plate 14 in the top roll 2 is an arcuate recess l8 in which the V insert It is arcuately movable a short distance to the right or the left with a radius l9 drawn from it to the center 20 of the roll. This adjustment is. efiected by hollow head set screws 2| and 22 in drilled and tapped holes on either side of the insert it in the die plate l4. and 6.) These set screws are held secure against loosening by hollow set screws 23 and 24 locked tightly against them in the outer ends of the tapped holes in said die. plate. A radial screw 25 which enters a radial tapped hole in the die plate 26, holds the insert firmly against the bottom of the recess It. When the screw 25 is loosened, the insert is free to be adjusted in either direction by the hollow head set screws 23 and 24, since a longitudinal slot 26 formed in the insert surrounds the head of the screw 25.

The second V-insert I! in the recess 2'! in the die plate l5 in the bottom roll 3 may be similarly adjusted by hollow head set screws 28 and 29 after a radial screw 30 is loosened. When in their adjusted positions, the set screws 28 and 29 are held against loosening by hollow head set screws 3i and 32 respectively.

Having formed the first double V and the single or middle V in the sheet, the latter is advanced toward the last double V which is formed in the same manner as the first double V. However, before the last double V is formed, the rolls having a bite on the sheet, in advancing it, set up a different condition from that existing in forming the first double V. This is due to the fact that all the metal for forming the last double V must be advanced from the unformed edge of the sheet toward the inserts. It is. therefore necessary in order to fold, instead of excessively draw, the metal, to have floating inserts on the third top die plate and a bolted double V-insert in the third bottom die plate.

Mounted for arcuate adjustment in a recess 33 in the third die plate 34 in the top roll 2 is a series of inserts or retainers 35. Each of these inserts comprises an elongated U-shaped steel piece having a forward leg portion with an inclined, side 38 which forms a v-recess with the inclined side 3? of a floating steel piece 38. This floating piece is slidably mounted on pins 39 similar to the pins E, that project forwardly from the 'rear leg portion of the 'U-piece 35. (See Figures 2-,3, and l.) The floating steel pieces 38 are held in a yielding position away from the fixed portion 33 of the insert 35 by a-number of small helical springs 42 whose ends fit in 'alined recesses in the floating pieces and. the fixed portion of the insert. I

For the purpose of efiecting an arcuate adjustment of the insert 35, about the center 20 of the roll 2, in the recess 33 in the die plate 34, we have provided means similar to those employed in adjusting the middle V inserts l6 and ii. Referring to Figures 3 and 4, the numerals 4! and 42 designate hollow head set screws in drilled and tapped holes in the die plate 34, on either side of the insert 35 for engagement with (See Figures 2, 5,

it. These set screws are held secure against loosening by hollow head set screws 43 and 44 in the outer ends of the tapped holes in said die plate. Radial screws 45 and 46 pass through slots 41, 41 in the insert 35, into radial holes in the die plateto hold the, adjusted insert firmly to the latter.

Within a recess 48 in the third die plate 49 in the bottom roll 3 we have also provided an arcua-tely adjustable double V steel insert 55. This insert, which does not contain a floating V-member, may be interchanged with the insert 35 in the top roll 2.

For the purpose of arcuately adjusting the insert 50, about the center 5| of the bottom roll 3, we have provided in drilled and tapped holes in the die plate 49, hollow head set screws 52 and 53-, similar to the set screws 4| and 42. The set screws 52 and 53 are adapted to be locked in their adjusted position by hollow head set screws 54 and 55 similar to the set screws'43 and 44 respectively.

For the purpose of holding the insert 55 securely against the arcuate bottom of the recess 48 in the die plate 49, we have provided a radial screw 55, similar to the screw 30. The head portion'of this screw is received by a slot in the insert 50, while its shank portion enters a tapped hole in the die plate below the insert.

It will thus be seen that the floating inserts, as well as the fixed inserts in the second and third top and bottom die plates, are arcuately adjustable by the means before described in order to make it possible to obtain the exactly correct spacing of all the Vs in the sheet, regardless of the variation in the temper of the material.

If it is desired to provide for six V crimp roofing, the die plates I4 and I5 carrying the middle inserts I6 and I! may be easily taken off and replaced by die plates 51 and 58 formed with arcuate recesses 59 and 60 respectively. (See Figure 7) In the recess 59 in the die plate 51 there is mounted adjustable retainers 6| similar to the retainers 35, which carry floating pieces 62 similar to the floating pieces 38 for the purpose of forming with the bottom'adjustable inserts 63 in the recess 60 in the die plate 58, a double V in the sheet that will not crack its spelter.

It is also tobe understood that the bottom roll 3 may be converted into the female die roll and the top second into the male die roll by interchanging the dies. The double and single V-inserts are made removable and interchangeable for this purpose.

If it is desired to provide for four crimp V roofing, the middle inserts l6 and I! may be taken out and replaced by blanks. In Figure 8 we have illustrated a piece of 5-V crimp galvanized roofing 63 which is a product of our machine.

Having described our invention, we claim:

1. In a two-roll corrugating machine, a top roll and a bottom roll to receive between them a sheet to be crimped, a pair of co-acting V inserts in the first positions on said rolls, a pair of coacting V inserts in the second positions on said rolls, a pair of co-acting V inserts in the third positions on said rolls, and means for arcuately adjusting the second and third V inserts to obtain the correct spacing of all the Vs on the sheet irrespective of the variations in the temper of the material thereof.

2. In a two-roll corrugating machine, a top roll and a bottom roll to receive between them a sheet to be crimped, a first, a second and a third die plate in each roll, co-acting V inserts carried by the first die plates, the second and third die plates being formed with arcuate recesses, coacting V inserts in the recesses in the second and third die plates in said rolls, and set screws engaging the second and third V inserts to arcuately adjust them about the centers of the rolls to obtain the correct spacing of all the Vs on the sheet irrespective of the variations in the temper of the material thereof.

3. In a two-roll corrugating machine, a top roll and a bottom roll to receive between them a sheet to be crimped, a double V insert secured in the first position in the bottom roll, a floating double V insert in the first position in the top roll for co-action with the first insert below it, a pair of co-acting V inserts in the second positions on said rolls, a double V insert secured in the .third position in the bottom roll, a floating double V insert in. the third position on the top roll for co-action with the third insert below it, and means for arcuately adjusting the second and third floating and fixed inserts to obtain the correct spacing of all the Vs on'the sheet irrespective of the variations in the temper of the material thereof.

4. In a two-roll corrugating machine, a top roll and a bottom roll to receive between them a sheet to be crimped, a first, a second and a third die plate in each roll, co-acting V inserts carried by the first die plate, the second and third die plates being formed with arcuate recesses, coacting V inserts in the recesses in the second and third die plates in said rolls, said second and third die plates being formed with oppositely disposed tapped holes communicating with said recesses, and set screws in said holes for engagement with the sides of the inserts in said recesses to arcuately adjust them about the centers of the rolls as axes to obtain the correct spacing of all the Vs on the sheet irrespective of the temper of 5 the material thereof.

5. An adjustable V crimp die insert for a die plate on a roll of a two-roll corrugating machine, comprising an arcuate V insert formed with a wide longitudinal slot at one side of the V, a 1 0 screw in said slot for entrance into a tapped hole in the die plate, and set screws in tapped holes in the die plate for engagement with the sides of said insert to arcuately adjust it about the center of the roll. 15

6. An adjustable V crimp die insert for a die plate on a roll of a two-roll corrugating machine, comprising an arcuate V-shaped insert, the legs of which point outwardly, pins projecting inwardly from the trailing leg of the insert, a piece 20 fioatingly mounted on said pins and formed at its outer periphery with a V projection, the trailing end of said piece and the leading leg of the insert having inclined faces to form with the V projection a double V recess, springs for yield- 25 ingly holding the floating piece away from the inclined face of the leading leg of the insert, said insert formed with a longitudinal slot on each side of the double V, a screw in each slot for entrance into a tapped hole in the die plate, and set 30 screws in tapped holes in the die plate for engagement with the side of said insert to adjust it about'the center of the roll.

1 JOSEPH C. FISHER.

EDWARD A. KIEFER.

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