US732857A - Sheet-metal-pipe former and groover. - Google Patents

Description

'No. 732,857. PATENTED JULY '7, 1903.. V M. HUNKER.

SHEET METAL PIPE FORMER AND GROOVER.

APPLIOATION TILED FEB. 11. 1902.

no menu... a sums-sum 1.

' No. 732,857. PATENTED JULY 7, 1903..

r I M. L. BUNKER.

SHEET METAL PIPE FORMER AND GROOVER.

APPLICATION FILED ran. 11, 1902.

e SHEETS-SHEET a.

N0 MODEL.

PATENTBD JULY 7, 1902...

6 SHEETS-SHEET 4.

M. L. HUNKER. SHEET METAL PIPE FORMER AND GROOVER.

APPLICATION FILED FEB. 11, 1902.

0 MODEL. 1

PATENTED JULY 7, 1903.

M. L; HUNKER.

SHEET METAL PIPE FORMER AND GROOVER,

APPLICATION FILED r123. n, 1902. V I a SHEETS SREET 5.

N0 MODEL.

IIS

PAT EDITED, JULYV, 19*03.

M. L. HU'NKBR. SHEETMETAL PIPE FORMER AND (moovsm APPLICATION FILED FEB. 11, 1902. I NO MODEL 6 SHEETS-SHEET 6.

IO conjunction with each 3p ally stop the grooving TO THE PIPE MACHINE PI-IIA, PENNSYLVANIA.

UNITED STATES Patented duly "7; 1903.

PATENT OFF CE.

MESNE ASSIGNMENTS,

AND MANUFACTURING COMPANY, OF PHILADEL- SHEET-METAL- PIPE FORMER AND GROOVER.

SPECIFICATION forming part of Letters Patezit N 0. 732,857, dated July 7, 1 903. Application filed February 11, 1902. Serial No. 93,568. (No model.)

To all whom, may concern:

. Be it known that I, MARTIN L. IIUNKER, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, 5 have invented-anew and useful Sheet-Metal- .Pipe Former and Groover, of which the fllowing is a specification. My invention relates to pipe forming and grooving machines automatically operated in other in which the sheet metal having been edged is formed and the turned edges looked around a mandrel and thepipe thus formed is passed to another mandrel, where the locked seam is I I grooved and the pipe is thus finished; and the objects of. my improvements are to provide a mechanism for forming and edge-locking the pipe with greater facilit and speed than has I heretofore been done, the forming and locking parts of which are adjustably adapted for various-sized'mandrels and pipes; to so form and edge-lock the pipe that the edges will not open or come apart before or during I the process of grooving the seam; to remove I the formed and edge-locked and the grooved pipes from the respective mandrels and automatically stop the machine when this is done,

and to groove the formed and edge-locked pipe by a return movement and automatic mechanism and start the forming and edge-locking mechanism when this is done. I'attain these objects by the mechanism illustrated in the accompanying drawings, in which I Figure 1 is aplan view of the former and part of the groover; Fig. 2, a plan view of the remainder of the groover; Fig. 3, a longitudinal vertical section of, the former; Fig. 4,

a longitudinal vertical section of the groover;

0 Fig. 5, a cross-section onthe line 5 5, Fig. 1;

Fig. 6, a cross-section showing the first operation in pipe-forming and the complete operation in eaves-trough forming; Fig. 7, a cross-section showing the second operation in pipe-forming; Fig. 8, a cross-section showing the pipe-forming completed; Fig. 9, a crosssection showing" the turned edges locked; Fig. 10, a cross section showing the pipe ready for grooving; Fig. 11., a cross-section 5b showing the pipe'grooved and rounded; Fig.

12, perspective view of part of the grower,-

frame, showing the base-plate and frame of the grooving-carriage and the durved trip'bar attached to the side of said carriage; and Fig. '13 a perspective view of the sheet-metal feed-rolls, showing the mode of attachment and operation.

Similar numerals refer to similar throughout the drawings.

The frame of the pipe-former consists of the two similar members 1 and 1, connected by the frame-rods 2. The plate-girder 3 is supported by the brackets 4 between the frame members die line. Above the plate-girder 3 is located the vertically-movable bed-plate 5, the end brackets 6 of which are guided by the flanges 7 and 7 on the frame members. Connecting the plategirder andthe bedplate are the toggle-levers 8, the respective arms of which are pivoted to the girder below and to the plate above and the common joints to the plate-actuating bar 9.

The blade-girders l0 and 11 are supported on. top of the frame members by the similar brackets 12, which are ward and from the middle line. Connecting the blade-girders,respectively, and the frame are the toggle- levers 13 and 14, the'r-espective bars of which are pivoted to the outer parts of the frame members and to the bladegirders, respectively, and the common joints to the blade-actuating bars 15 and 16, re-

spectively.

The forming-mandrel 17 is horizontally located in-t'he middle line and is supported at the rear end on the frame member 1 by the bracket 18 there attached and is connected with andsupported by the grooving-mandrel at the forward end. The fiorming-mandrel is round in its cross-section, except that the uppartsin the lower part in the midmovable sidew'ise toper side is flattened, forming the angles 20 and 20 on either side, the angle 20*, projects the longitudinal bending-flange 21. V

On the bed-plate 5 are attached the series of similar wedge-shaped blocks 22, on which rests-the butting-plate 23, having inclined notches 24 in its lower side corresponding with the wedge-blocks. The butting-plate is adjusted to various heights by the screw 25.

and on one side, near Resting on the bed-plate on either side of the i butting-plate are the forming plates 26, which are flat, and the upper edges 29 are prefer-.

ably blunt or slightly rounded. The buttingplate 23 and the forming-plates 26, with their connecting and adjusting parts,together constitute the forming-die 5.

On the inner side of the girder 10 is attached the forming blade 30, which has its upper side beveled to form the sharp projecting edge 3l, and on the inher sideof the girder 11 is attached the locking-blade 32,

. which has its projecting edge 33 preferably plate-actuating bar 9.

blunt or'slightly rounded. These blades are preferably made of' -angle-iron, and the at-' taching sides are provided with slots 34, through which are passed the attaching-bolts 35, thus giving a vertical adjustment. The lower sides of the respective blades are formed substantially flat and horizontal.

The cam-shaft 36 is mounted in the journal-bearings 37,'attached to the outer side of the frame member 1, and the pulley-shaft 38 is similarly mounted below the camshaft and carries the driving-pulley 39. Power is transmitted byzmeans of the cog-pinion 40on the pulley-shaft meshing with the cog-wheel 41 on the cam-shaft. The cog-wheel is mounted on the cam-shaft with the ordinary pinclutch 42, which is thrown into engagement by the rod 43 and automatically throws out at the end of one revolution. i

r The three several cams 44, 45, and at are mounted on. the cam-shaft. The cam lel rotales in the frame 47, which is attached to the The cams 45 and 46 rot-ate, respectively, in the frames 48 and49, the outer bars 50 and 51 of which respective frames extend upward beyond the top of the machine-frame and also downward to a pivotal connection in the brackets 52, attached to the frame member 1. The upper ends of the cam- frame bars 50 and 51 are respectively attached to the blade-actuating bars 15 and 16 by the compound knuckle-joints 53 and 54. The several cams are similarly formed and are so located one ahead of another on the 4 shaft that when rotated they will throw the the machine being in its normal position, as

respective cam frames successively away,

from the machine-frame and then successively toward it in the same order. Thus the plate toggle-levers 8 and the blade toggle- levers 13 and 14, respectively, are operated successively 'by their respective actuating- bars 9, 15, and 16. I I

To form and edge-lock a sheet-metal pipe,

shown in Figs. 1, 3, and '5, and'the sheet metal 55 having been cut to the proper length and width and the edges 56 and -5.7, respectively, flanged and turned 'back the sheet is fed into the machine by means of the feedrolls 58 and 59. The roll 58 is rotated by the sprocket-gear 60, which is driven from any convenientpower-shaft, and the roll 59 is rotated in the reverse direction by the cog-gears 60 on the ends or" the roll-shafts. Then the sheet enters the machine, it rests on the upper edges 29 of the forming-plates and is guided and held in proper alinement by the guides 61 on either side, as shown in Fig. 5.

The pin-clutch is then thrown into engagement, (if automatically, as hereinafter described,) and by the rotation of the several cams the work is done as follows:

The butting and forming plates 23 and 26,

respectively, are first thrown upward by the toggle-levers 8, the forming-plates being ad justed to bend jthe sheet metal around the lower half of the forming-mandrel, with the turned edgesextending upward and the butting-plate being soadjusted as to hold the sheet metal in proper position by its pressure during the remainder of the operation, as shown in Fig. 6'.- The forming-blade 30 is then thrown inward by the toggle-levers 13, forming one side of the sheetanetal over the mandrel with an acute bend at the angle 20,

the blade being soadjusted vertically and in its lateral movement that its sharp edge 31 engages the angle of the turned edge 56 and with the lower flat side holds the sheet metal immediatelyabove the flattened top of the mandrel and the turned edge just beyond the middle line, as shown in Fig. 7. 'ing-blade 32 is thenthrown inward by the toggle-levers 14, forming the other side of the sheet metal over the mandrel with an acute bend at the bending-flange 21, the blade being i so adjusted vertically and in its lateral movement that its lower'flat side will carry the turned edge 57 immediately above and clearing beyond theturned edge 56, as shown in Fig. 8.

thrown away from the mandrel by the reverse action of their respective toggle-levers, and the turned edge 56 springs up and engages and locks with the turned edge 57, as shown in Fig. 9,},after which the locking-blade is thrown away from the mandrel to its normal position, when the machine stops, the camshaft having completed its one revolution, which leaves the formed and edge-locked pipe 62 free to be removed to the grooving-main drel 19. p

By the acute bends of the sheet metal over the angle 20 and the flange 21 of the formingmandrel the engagement of the turned edges 56 and 57 is rendered secure, and they will not become unlocked in the further opera- I tions, and by the adjustments of the butting and forming plates the saine can be adapted to the'various-sized mandrels and pipes, and. they can also be used independently of the forming and locking blades for the forming of eaves-troughs, as shown by broken lines in Fig. 6.

The lock The butting and forming plates and the forming blade are then successively llO track-bars 67. i The engage the track-bars only on the lowerand shafts 72 and 73 of t sprocketshaft.

ward end or the nected by members.

shaft 88, mounted on inner s1des,respectively, leavingthe upper andouter sides free between the end members for the travel of the grooving-carriage base-plate68, the side projections 69 of which fit over and around the upper and outer sides of thetrack-bars,respectively. Thegroovingy carriage is moved forward and backward on 1 of which is attached to the the track-bars by asprocket-gear, the chain 70 base-plate 68 and sprocket-wheels 71, the which are mounted on the the respective end frame On the forward sprocket-shaft 73 are also mounted the cog-wheels '74 and 75, located on either side of the frame. These cog-wheels mesh, respectively, with the cogpinions id and 77, which are mounted on the reversing-shaft 78, located below the forward passes around the forward sides of ing-shaft are mounted the ordinary frictionclutch pulleys?!) and 80, which are rotated Under the reversingshaft is located the cross-bar 81, which is movable endwise in brackets, as.82, attached to the forwardv end respective ends of upward the clutchract'uating collars 85 tiv ythe cross-bar are turned and 86, respec- To the cross-bar is pivoted the forreversing-arm 87, the rear end of which is attached on thevertical rockthe rear side of the for- Ward end frameimember. ,Onthe vertical rock-shaft isalso attached ,the zrearward-extending arm 39, the rear end of which is conthe link with the lower end'of the depending arm 91, the upper end of which is attached to the horizontal rock-shaft 92.

The horizontal rock-shaft is mounted along the side of the groover-fraine, and by its oscil- 1 be thrown into 5o lation either oneof the friction-clutches can engagement or both of them thrown outby means of the reversing mech- I anism; The clutch-pulley 79 is thrown in by i depressing either of thelevers 93,

attached. to

I the horizontal rock-shaft, which is done by i theoperator andwhichcauses the groovingt riageapproaches the forwardiend of thefram e,

carriage to move forward. When the carthe, lowerside of the base-plate 08 strikes the ,160 from the opet'atingleveis, and depresses the R riage to move rearward. 1 approaches the rear curved upper edge 94 of the trip-plate 05,

which is attached to the by the curved arm 96 horizontal rock-shaft .on the opposite side same. This depression throws out the clutchpulley 79 and stops the machine. he clutchpulley 80 is thrown in by elevatingeither of the levers 03, which causes the grooving-oar- When the carriage end of the frame, the

On either end of the revers-- lug-rollers 107 frame member. On the yokes 83 and 84, engaging theframe 105 at the forward spectively, on the rearand forward members of the frame, and is preferably of less diameter' than the forming-mandrel 17, to the forward end of which it is attached and furnishes support. The short rib 102 on the lower side of the formingmandrel and extends this surface forward beyond the supporting roller 100.

In the middle line on the upper side of the grooving-mandrel is the grooving-ridge 103, which rises slightly higher than the upper surface of the forming-mandrel, but tapers down to meet it at the juncture. On either side of the grooving-ridge are the spreadingribs 104, which need not be any longer than the pipe to be grooved.

The grooving-carriage consists of the carriage-frame 105, attached to the base-plate, on the forward side of which are attached the brackets 106, in which are mounted the form- ,and 108, respectively below and above the grooving-mandrel. On the rear side of the grooving-frame is adjustably mounted the grooving-wheel 109 in the attached bracket 110, and in front of the grooving-frame is mounted the forward stripper 111 by the bracket 112.

The slide-bar 113 is horizontally locat ed in,

the middle line above the machine and'is supported at the rear end by the bracket 18 and at the forward end by the arched grooving-frame member 65. Depending front the slide-bar is the sliding bracket 114, at the lower end of which is attached the rear stripper 115. Attached to the grooving-carriage end and to the sliding bracket at the rear end on eitherside are the connecting-rods 116, ing bracket and the,attached rear stripper forward and backward with the movements of the grooving-carriage.

"Attached to and extending to one side of the sliding bracket is the trip-arm 117, to which is hinged the rearward-extending tripbar 118, which is held in normal position by the curved spring 119. When the groovingcarriage and the connected sliding bracket are near the end of their rear movement, the trip-bar l1S strikes the upper end of the an.- gle-lever 120, which is pivotedto the frame member 1 and carries it forward,thus depressing the lower rear end, to which is attached the pin-clutch-actuating rod 43, and

thereby throws in the clutch and starts the forming-machine. When the blade-girder mandrel 19 rests on the" grooved rollers 100 and 10], mounted, re-

groovingmandrel at the 7 rear end is flushwith the lower surface of the which carry the slitl- Iio is thrown inward, the trip-post 1'21, attached thereto, strikes the trip-bar 118 and carries endof its one revolution.

its rear end inward free from the upper end stripper pushes the pipe forward onto the.

grooving-mandrel, and the'grooving-carriage and connected parts are automatically stopped when this is done by action of the trip-plate 95. When another piece of sheet metalhasbeen fed into'the forming-machine,

the operator starts :the grooving carriage rearward, and the locked turned edges 56 and 57 are grooved by the wheel 109, which .completes the seam 123, asshown in Fig. 11.

Before and during the grooving process to keep the turned edges from coming apart the spreading-ribs 104 serve to expand the upper part of the pipe and by tension hold the edges in close engagement, as shown in Fig. 10. At the same time the upper forming-wheel 108 presses out the angular bends on either side of'the, upper part of the pipe, making the finished pipe 124; a true circle in section. When this is-done, the grooving-carriage and connected parts are automatically stopped by action of the trip-head 98, and at the same time the forming mechanism'is started by action of the trip-bar 118. The next time the grooving-carriage travels forward the finished pipe l24=is pushed off the forward free end 125 of the grooving-mandrel by the forward stripper 111.

In forming mandrels for kinds of pipe the bending-flange 21 can be omitted and the bending edge 20 substituted therefor, or the flat surface can be omitted and an additional bending-flange similar to 21 substituted for the bending-edge 20. I do not claim as myi'nvention the verticallyadjustable and specially -shaped formingblade and the locking-blade, which are illustrated and described in connection with my forming-machine.

What I claim as my invention, and desire to secure by LettersPatent, is-- 1. In a sheet-metal-pipe former, a mandrel, a forming-die below and a forming-blade on one side and a locking-blade on thelother side above said mandrel, a shaft, cams on said shaft, and bars and toggle-levers connecting said cams-and said die and blades respectively, the cams and leversbeingarranged to operate the die and bladessuccessively toward and then successively away from the mandrel.

2. In 'a sheet-metal-pipe former, a mandrel and a'die, the die consisting of two formingplates and a butting-plate therebetween, the forming-plates being adj u'stably spaced apart on either side of the mandrel and the butt:

ing-plate being adjustable to andfrom the certain sizes and mandrel, and means for moving the die to and from the mandrel.

3. In a sheet-metal-pipe former, a mandreland adie, the die consisting of two formingplates adjustably spaced apart on either side of the mandrel, and means for moving the die to and from the mandrel. In asheet-metal-pipe former, a mandrel having its upper face flat, a forming-blade on one side and a locking-blade on the other side operating near and above said flat face, and means for successively actuating said forming and kicking blades inward and respectively above and beyond the middle line of said mandrel and then away therefrom.

5. In a sheet-metal-pipe former, a mandrel having a longitudinal one side of its upper part, a forming-blade on one side and a locking-blade on the other .side operating near and above said mandrel and'fiange, and means for successively actuating said forming and locking blades inwardeand respectively above and beyond the middle line of said mandrel and then away therefrom.

6. In a sheet-metal-pipe'former, a mandrel having its upper face flat and a longitudinalfiange projecting near one side of said fiat face, a forming-blade on one side and a locking-blade on the other side operating near and above said flat face andsaid flange, and

means for successively actuating said forming and locking blades inward and respectively above and beyond the middle line of said mandrel and' then away therefrom.

7. In a sheet-metal-pipe former and groover, end-connected forming and grooving mandrels, a stripper for the forming mandrel, a grooving-carriage for the groovingmandrel, the stripper and the carriage'being connected,

and means for actuating the same.

' S. Inasheet-metal-pipeformeraudgroover,

end-connected forming and grooving mandrels, a slidebar loc'ated above said mandrels, a sliding bracket depending from said slide-bar, a stripperfor the grooving-inandrel on said bracket, a grooving-carriage for the grooving-mandrel, the bracket and carriage beingconnected, and means for actuating the same.

9 In asheet-metal-pipeformerand groover, end-connected forming and grooving- .mandrels, mechanism for forming and edge-locking a pipe on said forming-mandrel, a grooving-carriage and means for moving the same along said grooving-mandrel, and a trip for starting said forming and locking mechanism, automatically actuated by the movement of said carriage. l

In testimony whereof I have signed my name to this specification in'the presence of two subscribing witnesses.

MARTIN L. IIUNKER.

flange prO ecting on' loo

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