US1434876A - Revolving press - Google Patents

Description

A. DE FRIES.

REVOLVING PRESS. APPLICATION FILED 020.22.1919.

1,434,876, Patented Nov. 7, 1 922.

WZYZZEFFE 35- 27 7/1771 de M40 fiw AJMM m M I as the cherry-red headed working ALFRED DE PATENT ori ice FRIES, or cAssEL, GERMANY.

REVOLVING PRESS.

Application filed December 22, 1919.

To all who met may concern.

Be it known that I, ALFRED DE FRIEs, a citizen ofthe German Republic, residing at Cassel, Germany, have invented certain new and useful Improvements 1n Revolving Presses (for which I have filed application in Germany June 14, January 30, 1918, and October 18, 1917 of which'the following is a specification.

Hitherto it has been impossible to use presses with a revolving table for the manufacture of bolts or rivets with large heads which have to be pressed sharply, such as boiler-rivets or deeply sunk ships-rivets. One of the reasons therefor is that such presseshave no device for previous upsetting which is indispensable to prevent the giving way in lateral direction of the head-iron which is relatively long. Another reason is that the heading-punch does not work with the speed required for the sharp pressingout of the heads. There exist. however presses with upsetting devices, but such de vices consist of solid punches such as for example are used in the cold-presses. The solidpunch is not suitable for hot-pressing pieces get stuck in-this kind of upsetting device whereby continuous disorders are caused in their use.

The present invention has for its principal object, to obviate these inconveniences by the use of a so-called open upsetting device which opens after every pressing action and further by the increased speed of the heading-punch. This increased speed of the heading-punch is rendered possible by means of an intermediary shaft driven from the main shaft by a gear wheel which regulates the movements of the revolving table in correct proportion to the speed of the heading punch. Thus it is possible to run the main shaft which drives the heading-punch with a much higher speed than hitherto, the speed of the. revolving table remaining slow. The feeding of the working pieces into the dies can be effected by hand or automatically. it is however not absolutely necessary that a feed shaft be used as under certain conditions the revolving table and the gear for the ejector pins could be operated from the main shaft.

With the above andother objects in view the invention consists in general of details of construction, illustrated in the accompanying drawings and specifically claimed.

Serial No. 346,811.

In the accompanying drawings like characters of reference indicate like parts in the several views:

Fig. 1 is a partial section of a revolving i press improved according to the present invention.

Fig. 2 is a section on line A-B of Fig. 1

showing the ejecting and coolingdevices.

The movement of the trolled from the feed shaft 1 by means of a cam disc 2-acting through the intermediary of a roller 4k upon a swinging-rod 3. The rod 3 acts upon a pawl and ratchet 5, 6 the ratchet 6 of which is keyed upon the same shaft as the die-holder 7. At each revolution of'the feed shaft through of the circle of the die-holder, that is through 459. The movement of the die-holder requires of the time of one revolution of the feed shaft 1 the pressing action taking place during the remaining third.

The heading punch '10, is securedto the carrier 11 which is operated by the main shaft 14 directly by means of the crank 15 and rod 16.. As for the die-holder,

die-holder is cona slower speed is required gears 12, 13 are inter 1 the die 9 is moved i posed between the feed shaft 1 and the main shaft 14. If the ratio of gear of the toothed wheels were, for example, 1:3, the die gets from the posit-ion 9, to the position 9 during the time in which the heading-punch 1O executes three strokes including the pressing. p I v The movement 'of the upsetting punch which consists of two parts 17, 18 can be derived either. from the feed shaft 1 or from the main shaft 14. According to the drawing the main-shaft 14 is used, the movement being transferred from the crank 32 through the rods 19, 20 upon the shaft 21 which carries the arm 22 forthe carrier of the upsetting-punchp This carrier is composed of the main slide 23 and the auxiliary slide 24' between which is a gap 25. The arm 22 engages with a slot 33 of the auxiliary slide12e The carrier is guided in the part 31. The movementv of thecarriage is effected in the following manner: When the auxiliary carriage 24: is moving downwards, owing to. the pressure from arm 22,

I it presses upon the main-slide 23 after the the driving arm 22 goes up, the auxiliary I 2 being'th'u's maintained in its posit-ion whilst the upsetting is being effected. The ge shaped lowerend of the auxlliary car -i 2 1i penetratesbetween said roller 28 of the lBVGlQG and the back wall of carriage when said auxiliary carrier is moved downwards, the roller 28, respectively the upper end of the lever 26 being thus pushed away from the main carriage so that the upsetting tool 17, 18 is closed. This device is opened again when the auxiliary carrier 5%; goes up, when the roller-.28 is liberated by the part 29 of the auxiliary carrier so that it can engage'with the'extension 30 of gap 25 through the influence of a spring or m ely through the expanding of the ma teri al which has been upset. The lever 26 is thus released and the tool 17, 18 can open andliberate the rivet or bolt] I The upsetting means hereinbefore ,described and illustrated in the drawing can be used also in connection with other presses.

The device illustrated in Fig. 2, which serves for ejecting thepressed bolts from'the di'es' consist of a frame 34: carrying the dieholder 7 in which the dies 9 are located. 'ihe ejccting'pins 35 guided in the cylind ical extension of the bo'rings for the dies a can swing around provided in the die-holder are submitted to the action of two-armed levers 36. The levers 36 are 'pivotally mounted in a bearing 8 provided in the die-holder so that they pins 38, slots 39 of said bearing 8 assuring the unimpeded movement oisaid'levers. As can be seen from Fig. 2-, the faces e0,41 or 42 of said levers are fully or partly in contact with the wallsof said,

slots. The noses 48 at the inner ends of the levers 36 are located so that they are adapted to exert a pressure in the direction of the axis ofth'e ejecting pins "35. 'The'le'vers 36 are actuated flOfil the feedshaft 1 bymeans ot a cam lever 50 operated by a cam of said shaft and hingedly connected by a "connectingrod 59 with one end of a bell crank lever 60 whose other end is connected with a rod 61 in such a manner that this rod exerts a reciprocating movement."

When a pressure isexe'rted upon a pedal 62 therod L5 i's pulled to the left, whereby anfangle lever 46', 47 is moved out of the way of the coupling pin 48 which is thus free to engage with a couplingpin of the toothed wheel '12 whereby the shaft 1 and necessarily also the system of connecting of 23 which then rods 5861 is set in motion. As soon as the pedal 62 is released, the different parts return to their normal positions, shown in Fig. 1 of the drawings so that the arm 4:? of the angle lever 4:6, 47 whereby the shaft- 1 is thrown out of gear and the connecting rods 58-61 are stopped. The cooling liquid is conducted through a channel 37 into an excavation 49 of the die holder 7. Channels 50 radiating from said excavation t9 lead to the'screw'stoppers 51. Channels 52, 53 branch off from said channels 50, of'which 53 leads to a cylindrical space surrounding the ejector 35, channel 52- leading to an annular space 55 provided around the die 9. When the machine is working, the water or other cooling fluid drops thus out along the die and is thrown out through the mouth 57 ofthe boring of the die owing to the piston-like action of an annular collar 56 of the ejector pin 35 wherebythe perfect cooling of all the parts is obtained;

I claim:

ii In a revolving press with movable die holder'the combination of a rotatable die holder, an upsetting tool' composed of a fixed part and of a movable part adapted to open automatically after each upsetting action and a heading punch for terminating the head of the article to be produced.

2,111 a revolving press with movable die holder the combination of a main slide havin'gan excavation in its upper part, a fixed part of an upsetting: tool mounted in said slide, a two-armed leVer'piVO'taIly fixed at the side of the main slide, the movable part of the upsetting tool fixed in'the lower end of said lever, an auxiliary carrier located said upsetting tool and a heading punch.

produced.

3. In a 'revolvingpress with movable die holder the, combination of a feed shaft with means for throwing out of action said .feed shaft, an upsetting tool composed of a fixed part and of a movable part adapted to open automatically upon each upsetting action, heading punch tor-terminating the head of the article to be produced, a set of headfor terminating the head, of the article to be ing dies in the movable die holder and ejector pins located in the heading dies.

4. Ina revolving press of the type described and shown the combination of a rotatable die holder having a. central boring,

cylinder in said boring having radial slots, two-armed levers pivotally mounted 1n said radial slots and ejector pins actuated by said twoarmed levers.

In a revolvingpress oif the type described. and shown the combination of a rotatable die holder having an excavation at gets behind the pin 48,

iso

its centre for the reception of cooling liqchannels, leading the one to the ejector (le- 10 uid and channels leading from said excavice, the other to the dievation to the dies In testimony whereof I affix my signature 6. in a revolving press of the type dein presence of tWo Witnesses. r Q 1 a ccrlbeo and shown the comblnatlon of a ALFRED DE FRIES.

rotatable die holder having an excavation at its centre for the reception of cooling \Vitnesses:

liquid channels leading from said excava- WILBY WIRTH, tion two branch-channels of each of said ADOLF LEMKE.

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