US1877110A - Shaping machine - Google Patents

Description

Sept. 13, 1932.

W. E. WUNDERLICH SHAPING MACHINE Filed May 28, 1950 3 Sheets-Sheet 1 Sept, 13, 1932. w, w uqp q -q 1,877,110

SHAPING MACHINE Filed May 28, 1930 3 Sheets-Sheet 2 Sept. 13, 1932. w. E. WUNDERLICH SHAPING MACHINE Filed May 28, 1930 3 Sheets-Sheet Patented Sept. 13, 1932 UNITED STATES PATENT OFFICE wILLrAM n. wuNnr-sanicn, or MUNCIE, INDIANA, ASSIGNOR To THE MOORE coivrrA Y, on MUNCIE, INDIANA A coBroa TIoN or INDIANA SHAPING Application filed May 28,

in view. The machine of my-inventionis inclusive of a shaping anvil and head that are relatively movable. 'One of these members, preferably the head, is reciprocable, there desirably being clutching means between the source of power that moves this member and the gearing through which it is moved. The head has a work engaging'element which advances the work to a partial state ofcompletion and another work engaging element which shapes the work beyond its ultimate shape to an extent which is absorbed, by the resilience of the work; when the head and anvil are separated at the conclusion of the operation. My invention is of particular service in shaping metal bars such as angle irons. The invention has been embodied in a machine for shaping angle irons into half frames of bed springs, these half frames being assembled into complete frames by eX- traneous means. These angle irons are desirably assembled in pairs and back to back, the adjacent sides of the angle irons being placed upon the machine in the relation that they are to occupy, the machine being pro vided with means whereby the assembled angle irons may be operated upon collectively or as a unit, so that they may be shaped in exact symmetrical correspondence and whereby each cooperates with the other to position and constrain the same while the machine is operating thereon.

I will explain my invention more fully by reference to the accompanying drawings in which Fig. 1 is a front View of a shaping machine as the inventionis preferably embodied for the specific purpose mentioned; Fig. 2 is a side View of the machine shown in Fig. 1; Fig. 8 is a sectional view on line 33 of Fig. 1; Fig. 4 is a sectional view on line H of Fig 1; Fig. 5 is a sectional View on line 5-5 of Fig. 1; Fig. 6 is a view of the lower part of the machine as it appears in Fig. 1, but with the head closed upon the anvil and the work between the anvil and head, parts being shown in section and broken away; .andFig. 7 is a plan MACHINE 1930. Serial No. 456,566.

:viewof one'form of the product of the machine.

.The anvil 1 is bottomed upon "a pedestal 2 andis bolted against the front side of two spaced apart uprights 3 which are also bot- .tomed upon the pedestal and are desirably bolted thereto. The anvil has a broad work engaging face 4 which is horizontal at the top .and has two side continuations which slightly converge, the corners between the anvil top and sides being rounded, as indicated. The anvil desirably has a positioning rib or gauge5 which isXformed along the top and sides of the anvil and at the rear thereof. The work illustrated comprises two angle iron bars 6 and 7 which are placed back to back with these backs, upright,-the rear edge of the angle iron, bar 6 being engaged with the rib 5, whereby both bars are positioned with reference to the shaping .mechanism bydot and dash lines in Figs. 1 and 4, whereby a shape is ultimately imparted to the. angle iron bars, as indicated in Fig. 7. Such positioning. of the angle iron bars is accurately determined by means of a pin 8 which projects forwardly from the rib 5 and is receivable within registering holes 9 formed. in the two angle iron bars. Thereciprocable head which cooperates with the anvil is inclusive ofa heavy horizontal bar 10, brackets 11' carried by and depending from'the bar 10, shap ing die blocksor members 12 pivoted upon and extending from saidbrackets and work engaging rollers13 and l4c-journaled upon and at the lower portions'of saiddie members. .Each of these die members is formed with an-arcuate groove 15 of.a depth equal to orslightly deeperthan the' width .Of. the portions ofthe backs of theangle irons I6 and 7 i that project beyond the remaining sides oftheseirons. The side walls of the groove 15 and'the transverse walls thereof are of concentric curvature approximately con.- forming to the curvature thatisto'be imparted to the angle irons: at the curved'corners illustrated in. Fig. 7. The angleiron bars are desirably heated at the parts thereof that are to be bent into curved corners, so as readily to yield to the shaping action of the machine. The rollers 13, which are carried upon bifurcated finger shaped portions 12 of the members 12 first engage the work. These rollers are provided with tapering peripheral grooves between which the adjacent edges of the angle iron bars are engaged, the converging sides of these grooves placing and maintaining the backs of the angle iron bars closely together in the regions of these tapering grooves. During the downward movement of the heavy bar 10 and the balance of the head of the machine assembled therewith the rollers 13 partially bend the angle iron bars approximately 30 degrees to their lengths as indicated by dot and dash lines in Fig. 6. When the angle iron bars are thus bent to the position shown by dot and dash lines in Fig. 6, the rollers 14 encounter the angle iron bars and press them against the slightly, downwardly converging ends of the anvil. Each of these rollers is provided with a peripheral groove 14 midway of its length and of a radial depth equal to the depth of the grooves 15. The width of each groove 14 is equal to the widths of each of the grooves 15 to snugly receive the contacting backs of the angle iron bars and to maintain them in close assembly during the forming operation in the region of the rollers 14. The pin 8 takes part in holding the angle iron bars against the top of the anvil, but is desirably not relied upon for this purpose. I desirably provide a clamping member which better serves this purpose, the clamping member illustrated including two pairs of pressure feet 16 which are carried by and depend from the horizontal bar 17 which is also vertically reciprocable. The feet 16 engage the horizontal sides of the angle iron bars and prevent these bars from buckling upwardly where they rest upon the top of the anvil. The feet of each pair are spaced apart a distance to snugly receive the contacting backs of the angle iron bars therebetween.

The rollers 14 are moved inwardly by any suitable means as they continue their downward movement after engaging the angle iron bars to press the end portions of these bars against the converging ends of the anvil. In the embodiment of the invention illustrated, the anvil is provided with cam rollers 18 which are carried upon lateral continuations 19 of the anvil. These cam rollers engage the cam faces 20 of the swinging members 12. These cam faces converge downwardly and are of such direction as to cooperate with the cam rollers 18 to cause the inward movement of the rollers 14 to press the angle iron bars against the ends of the anvils and to maintain these angle iron bars in engagement with the anvils after the rollers 14 have been thus inwardly moved. In order that the rollers 13 and 14 may be carried by the same members 12 and in order that the rollers 13 may perform their function, said members are permitted a limited range of swinging movement defined by the finger portions 12 of the members 12 that closely approach the heavy bar 10 which, by being engaged by these fingers, limits the extent to which the members 12 may be outwardly swung to firmly hold the rollers 13 in functioning positions. After the rollers have been brought to their final downward positions, indicated in Fig. 6, the head of the machine and the clamping members 16 and 17 are withdrawn and the work is removed from the anvil and the pins 8. The work springs to the final shape shown in Fig. 7 where the end portions of the angle iron bars are at right angles to the intermediate portions of these bars. Two pairs of bars, shaped as shown in Fig. 7, have their ends suitably brought into assembly to form the desired rectangular bed spring frame. After the head has been elevated and the work has been removed the die members 12 swing inwardly, by gravity. The extent to which these die members may inwardly swing is limited by pins 21 carried upon the fingers 12 and the lower ends of upright slots 22 formed through fingers 23 that depend from the ends of the heavy bar 10.

Unitary and power driven mechanism is desirably employed for operating, in orderly sequence, the vertically reciprocable head 10, etc. of the machine, the vertically reciprocable clamping jaw 16, 17 and the work ejecting mechanism which is preferably employed and which will later be described, though the invention is not to be thus limited. Power is derived from a pulley 24 which is continuously driven by a belt 25. The hub 26 of the pulley is loose upon the horizontal shaft 27. A cone clutch member 28 is splined upon the shaft 27, so as to turn therewith and to be movable therealong. A clutch member 29 is carried by the pulley 24 and has a conical surface that surrounds the cone 28 and is engageable thereby when said cone is moved toward the member 29. The hub 30 of the clutch member 28 has a peripheral groove which receives pins 31' that are carried by a yoke 32 whose horizontal stem is pivoted at 33 upon one of the uprights 3. The bell crank 34 is also pivoted upon this upright and has one arm engageable with the stem of said yoke, so that when this bell crank is suitably turned the yoke will be moved along the shaft 27 to bring the clutch member 28 into engagement with the clutch member 29 and thereby couple the loose pulley 24 with the shaft 27. The other end of said bell crank is con nected by means of a rod 35 with the pedal 36. When this pedal is depressed, the bell crank is moved in a direction to cause engagement of the clutch members 28, 29 with the results stated. Whensaid clutch members are engaged, the spur pinion 37, fixed upon the shaft 27, is coupled with the pulley 24 with which it is coaxial. This spur pin ion engages the spur gear 38 which is fixed upon a shaft 3 9. This shaft carries a spur pinion 40 which meshes with a spur gear 41 whose shaft 41 is journaled upon the uprights 3. A cam 42 is fixed with respect to the spur gear 41 to turn therewith. This cam is engageable with a cam roller 43 which is mounted upon one end of an intermediately pivoted arm 44. The other end of this arm is connected by a rod 45 with one end of an intermediately pivoted arm 46. The other end of this arm is in pin and slot connection 47 with a bracket 48 that is carried by the bar 17. The cam, at the proper time, thus serves to apply the clamp, the clamp being applied before the work shaping head 10 etc. is depressed. The bar 17 of the clamp is desirably guided in the vertical slots that are formed in the plates 49 that are bolted to the uprights 3. In order to maintain the bar 17 horizontal, it has pin and slot connections 50 with the adjacent ends of the horizontal arms 51 whose other ends are fixed upon a horizontal shaft 2 which is journaled at 53 upon the uprights 3.

The work having been clamped in place upon the anvil, the head 10 etc. is depressed. The mechanism for depressing and elevating, that is for reciprocating, such head is inclusive of the crank discs 54 which are fixed upon the shaft 41 of the spur gear 41. These crank discs are connected by a pitman 55 with the heavy bar 10 of the shaper head, as indicated at 56.

After the work has been shaped and the head 10 etc. has been sufiiciently raised, the work is ejected from the anvil. The mechanism for ejecting the work is inclusive of pairs of horizontally movable pins 57 at the ends of the anvil and located at the curved corners thereof, these pins being movable crosswise of the anvil, as will appear.

Each pair of pins is fastened to a crosshead 58 individual thereto which is slidably mounted in guideways in abracket 59 mounted at the rear of the anvil. The pins 57 project through holes in the anvil rib portion 5. Both pairs of pins are actuated simultaneously by a cam lug 60 on the periphery of one of the crank discs 54. This lug engages a cam roller 61 provided upon a rocker arm 62 that is secured to a horizontal shaft 63. This shaft is mounted in bearings 64 provided upon the rear of the uprights. This shaft is fixedly connected at its ends with the upper ends of rocker arms 65 whose lower ends are pivotally connected to rearward extensions 66 of crossheads 58. The pins 57 are retracted and the roller 61 urged against the edge of the disc 54 by means of a :from the invention. 1 I

' positive means for moving the second element -movableanvil and head members, the head 'member including a die block mounted'to tension spring 67 having one end secured to the uprightB and the other end secured'to the rocker arm 62.

- Changes may be made without departing Having thus described my invention, I

a claim l. A shaping machine including relatively movable anvil and head members, the head member including two elements so relatively. positioned that one will engage the work upon the anvil and partially shapeit and the other element will thereafter effectively engage .the work to further shape it; and

transverselyof the direction of relative movement ofthe anvil and head in concluding the shapingoperation wherein the work engaging elements are in the form of rollers, thelroller which first engages the work having a' tapering peripheral groove and the roller which operates upon the work secondly having a straight-sided groove.

i 2. A shaping machine including relatively swing upon; the body of the head, and having a limited range ofswinging movement away from the anvil, said die block having thereon two elements so relatively positioned that one will engage the work upon the anviland partially shape it and. the other element will thereafter effectively engage the work to further shape it.

3. ,A shaping machine including relatively movable'anvil and head members, the head member including a die block mounted to swing upon the body of the head, and'having a limited range of swinging movement thereon two elements so relatively positioned that one will engage the work upon the anvil away from the anvil, said die block having fm5 work having a tapering peripheral groove and the roller which operates upon the work secondly having a straight-sided groove.

7. The structure of claim 3 wherein the work engaging elements are in the form of rollers, the roller which first engages the work having a tapering peripheral grooveand the roller which operates upon the work secondly having a straight-sided groove.

8. A work shaping machine including rel* J atively movable anvil and head members,

said .anvil having a long side and two relatively short sides, a clamping member associated with the long side of the anvil for maintaining a portion of the work in contact L13 with the long side of the anvil, means as sociated with the head member for forcing the portion of the work contiguous to said first mentioned portion to conform to the shape of the relatively short sides of the 31 anvil, said means including die members hinged to the head and adapted to swing toward the anvil but having engagement with the head to limit their movement away from the anvil, and cam rollers associated with the anvil for positively forcing said die members toward the anvil.

9. A work shaping machine including relatively movable anvil and head members, said anvil having a long side and two relatively short sides, a clamping member associated with the long side of the anvil for maintaining a portion of the work in contact with the long side of the anvil, means associated with the head member for forcing the portion of the work contiguous to said first mentioned portion to conform to the shape of the relatively short sides of the anvil, said means including die members hinged to the head and adapted to swing toward the anvil but having engagement with the head to limit their movement away from the anvil, cam rollers associated with the anvil for positively forcing said die mem bers toward the anvil, and mechanism for releasing the clamping member and ejecting the work from the anvil.

In witness whereof, I hereunto subscribe my name.

WVILLIAM E. WUNDERLICH,

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