US2644645A - Wax winding and slabbing device - Google Patents

Description

July 7, 1953 Filed Nov. 20, 1948 A. J. BEVEVINO WAX WINDING AND SLABBING DEVICE v mmyron. in do .ffleqc'um'o' y 11 f 5 A. J. BEVEVJNO 2,644,645

WAX WINDING: AND SLABBING DEVICE med Nov. 20, 1948 s She'etsQ-Sheet 2 .lNVENdR. fln ela [Berri/ 120 BY @Mf Patented July 7, 1953 2,644,645- WAX WINDING AND SLABBING DEVICE Angelo J. Bevevino, Petrolia, Pa., assignor to L. Sonneborn Sons, Inc., a corporation of Delaware 1 Application November 20, 1948, Serial No. 61,196

13 Claims.

blocks or slabs is by moulding of the wax in suit-'- able forms into which the wax is poured in substantially molten condition and removed after chilling.

One object of the invention comprises inter alia a new wax slabbing device.

Another object of the invention comprises a new wax slabbing device permitting substantially continuous operations.

Still another object of the invention comprises a wax slabbing device requiring a minimum of manual operations.

The foregoing and still further objects of the invention will be seen from the following description read in conjunction with the drawings in which:

Fig. 1 represents a top view, with parts broken away, of a construction including one embodiment of my invention; 7 r I Fig. 2 represents a side view of the construction shown in Fig. l with parts broken away;

Fig. 3 represents an enlargedside view, wit parts in cross section, of the cutter bar and knife construction shown in Figs. 1 and 2;

Fig. 4 illustrates an end view of a construction which includes an alternative embodiment of my invention;

Fig. 5 shows an enlarged side view of the cutter bar and knife construction illustrated in Fig. 4;

and 1 Fig. 6 is a wiring diagram schematically showing the various relay and time switch connections involved in the automatic timing operations as applied to the preferred embodiment of the invention.

Specifically referring to the drawings, I designates a cooling drum'mountedon a frame 2 with its hollow axle 4 and the bearings 3. The lower periphery of cooling drum l dips into the wax tank 5. Hollowaxle 4 of cooling drum I carries on one side the driving sprocket 6 connected by way of the sprocket chain 1 to a suitable motor (not shown) Hollow axle 4 of drum I carries at its ends water connections 8 and 9 for the circulation of cooling medium through the hollow interior of drum'l suitably'provided with circulating means in the conventional manner. Scraper blade I is mounted against'cushioning spring force of'the spring I I byway of the upright member-lzandthehing d arm I3. Gu e ro ler I 4 is 2 mounted on frame 2 with its periphery on one side in substantially tangential alignment with a cutter bar I5 (Figs. 1, 2 and 3) pivotally mounted by way of the shaft portions I6 and bearings IT on the upright framework I8. The shaft portion of cutter bar I5 is extended through frame I8to carry at its end the-tilting or pivot bar I9 actuable by the solenoid elements and 20a respectively. The cutter bar I5 defines a slot 2|, being substantially of inverted frustoconical cross-section. The opposing edges 22 and 22a at the lower ends of the slot 2i of cutter bar I5 define relatively sharp cutting edges. A cutter knife 23 having the pointed head portion 24 (Fig. 3) is mounted on frame I8 with its pivot directly'in line with the center of the cutter bar I 5 and with the knife head portion 24 extending just sufiiciently into the lower .end of space 2| to be brought into cutting engagement with cutting edges 22 and 22a upon tilting the cutter knife on its pivot.

A-pair of guide rolls 25 and 25a is suitably mounted on frame I8. =A spr0cket 26, driven by sprocket chain or belt 21, is suitably connected to.

a motoror other driving force (not shown). In the arrangement illustrated sprocket 26 drives guide roll 25a and the. driving arrangement is preferably suchjthat the peripheral speed of the guide roll is substantially synchronized to approximate that of the cooling drum I. In the arrangement shown, guide roll 25 is driven by guide roll25a but may carry an independent sprocket and chain arrangement identical with that of sprocket'25 and chain 2! driving guide roll 25a and synchronized for a peripheral speed approximating that of drum I. The guide rolls 25 and 25a are'so mountedrelative the stationary knife 23 that the latter ispositioned substantially I symmetrical with respect to the opposing periphcries of these guide rolls.

Two forks'28 "and 29, carried respectively on mounted against axial movement and for frictional engagementwiththe clutch disk 32 and 33 respectively; v

Fork shafts and SI carry, substantially fixedly secured thereto, ratchet disks 3B and 30 respectively. pivotally tiltable bar member carrying the ratchet stops 4| and 42 is secured to the frame I8, and is controlled in its pivoting movement by the solenoids 43 and 44. The bar is mounted for engagement of the stops 4| and 42 with the ratchet cams or teeth of the ratchet disks 38 and 39 respectively, depending upon the position of pivot of the bar 40.

In practical operation the rotation of the cooling drum I picks up a chilled coating of wax 45 on the drum periphery from the molten wax in tank 5. The coating of wax is separated from the drum as the latter rotates, by means of the scraper knife I yielding the wax sheet 45a which passes over the guide roll I4 into the slot H of the cutting bar I '5.

As shown in Figs. 2 and 3, the knife 23 is in a tilted position, with its head member 24 substantially in cutting contact with the cutting edge 22a, and forms with its lower inclined surface portion 24a, an apron or guide surface for the wax sheet 45a as it passes through the slot 2| and onto the roll 25. The knife 23 is substantially held in position by the bar I9, which is kept in the position shown by the energization of the solenoid 20a pulling the core member 20b into the solenoid coil.

As illustrated in Fig. 2 the wax sheet 45a has passed through a slot 2| alongside roll 25 and between the arms of the fork 28 to a short distance below the same. At this point the solenoid 43 is still energized, pulling the core 43a into its coil, thereby tilting or pivoting bar 40 into the position shown, in which the ratchet stop 4| engages one of the ratchet teeth of the ratchet disk 38. In this position the motor or other moving force (not shown) rotates the clutch pulley 36 'into the coil, thereby moving the stop H but of engagement with the ratchet tooth of the disk 38, whereupon the frictional engagement between clutch disk 32 and the rotating disk 36 will cause shaft 30, and with it fork 28, to commence turning. As may be readily seen, the continuing rotation of the fork will wind up the wax sheet on the same.

After a predetermined amount of wax has been wound onto the fork 28, solenoid 20a is deenergizedand solenoid 20 energized, causing core 200 to be pulled into the coil, thereby pivoting thev bar I9 into the opposite direction, now moving the head portion 24' of the knife-23 against the cutting edge 22 of the slot 2| of the cutter bar I5, thereby cutting the wax sheet 45a.

After the bar I9 has moved into tilted cutting position for the wax sheet 45a being wound onto fork 28, the knife 23 is now slanted to form an apron or guide surface in the direction of the roll 25a. The wax sheet 45a'continuing' to feed from drum I over guide roll I 4 and through slot 2 I, will now pass through the aperture between the knife head portion 24 and the cutting edge 22a of bar I onto and over the apron surface defined by the body portion 24b of the inclined knife 23. Wax sheet 45a is thus passed into contact with the roll 25a and picked up by the same, to be led' along its periphery, away from roll 25, to between the arms of the fork 29.

After the cutting of pivot bar I9 by the energization of the solenoid 20, the fork 28 will COIL- 4 tinue to rotate while fork 29 is prevented from rotation by the stop 42 held in position by the energized solenoid 44. The rotation of fork 28 and stop-motion position of fork 29 is maintained until the cut-off portion of the wax sheet 45a is completely wound onto fork 28 and until the new end of the wax sheet 45a now feeding over roll a has reached winding' pos'itiom Atthis point solenoid 44 is deenergized'; solenoid '43 is energized, thereby tilting bar into stop-motion position for the fork 28, and moving the stop 42 out of engagement with the ratchet tooth of the ratchet disk 39 and permitting fork 29 to commence winding of the wax sheet a. The operator'w'ill then remove the wound-up wax sheet from the stoppedfork 28 by slipping the same from the fork arms. The wound-up wax may then be slightly compressed to form the desired wax slab.

Conventional individual hand switches may be used to operate the solenoids. 'It'ispreferred. however, to connect thesolenoids to conventional typetime switches andtoso set the same'that the time switches alternating the energization of solenoids 20 and 20a will permit a time interval for the'feeding of the wax sheet 45a sufficient to give the desired thickness ofslab. The time switch alternately energizing solenoids 43 and 44 is then set for about the same time interval between .energizations but for a definite lag of a predetermined period sufiicient in each case to permit the complete winding of the cut-off portion of the wax sheet 45a, and the moving of the .end of the feeding wax sheet-into winding position on the other fork'a'fter energization of the solenoids 2'3 and ZII'a-and cutting operation of the bar 23. Depending upon the requirements of the trade, or other considerations, the amount of wax wound on the forks for the preparation of a Wax slab maybe varied, as desired, by varying the setting of the time switch for the time interval desired toolapsebetween theenergization of th solenoidsonbar I9.- i5

The speed of rotation of the'pulleys 36 and 31 is preferably so adjusted that they will rotate forks Rand-29 by way of the clutch disks 32. and 33 somewhat faster than the feeding speed of the web 4511 onto .the fork.v The springs 34 and 35 are then preferably so arranged that the'frictional engagement between the clutch disk-s 32 and-33, withtheir respective pulleys 36 and 31, is such that the spring tension is less than the strength of the wax sheet feeding onto the fork, so that when the fork starts to wind the sheet on its periphery, the speed is never greater or less;,but the same as the sheet speed,

,regardless of the number of layers on it, since in each case the differentialin speed between the rate of travel of the wax sheet and the peripheral speed of the fork, when empty, is compensate by'slippage of the clutch.

Specifically referring toFigs. 4 and 5, an alternative embodiment of the invention is illustrated. As'there shown, the cutter bar I5a is mounted for pivotable movement on shaft I6 resting in bearing I'I,- mounted on frame I8. The knife 23a is in this case substantially stationary. Slot Zla in cutter bar I'5a'is substantially of the sametype as slot -2I in the previously described embodiment and has cuttin edges 22b and 220 respectively. A pivot bar I9a, similarly controlled by solenoids (only one shown) as the pivot bar I9 :of the above described'embodimentfiis secured to the cutter bar I5'a'. In this case; instead of moving the knife 23a into cutting positions, the latter remains sub-' stantially stationary and the cutter bar is subjected to a limited axial movement by pivoting the bar |9a by means of its solenoids, so that in one position of pivot the cutting edge 22b is engaged by the head portions 240 of the knife 23% while in the other position the cutting edge 22c engages the head portion 240 of the knife. the first stated position the wax sheet 45a moves along the right side of the relatively wide body portion of the knife 23a, which is so arrong'ed that the web end will hit the right guide roll 25a,

while when the cutting bar is in the last mentioned position, the web Will be guided over the knife body portion onto theleft roll 25. In other respects the operation of this embodiment is substantially the same as hereinabove described with respect to the first mentioned illustration of my invention.

Specifically referring to Fig. 6 showing the wiring diagram and related parts of a wax slabbing machine inconnection with the invention, the following is an. illustrative example of the modus of operation involved. 7

Assuming safety switch 6! is closed to energize the circuit, the timer 63 and relay 69 become energized. The contacts of relay 69 energize relay which in turn energizes the right shear solenoid a, relay 69 sealing relay l6 and starting timer 65 to time for the desired predetermined period permitting the wax sheet to pass through the right fork 29 into reeling position. At this point, timer 65 times out and closes to energize the leftpawl or ratchet solenoid 43 of bar 40 thereby lifting the stop 42 out of its stop position and permitting the right fork 29 to turn and thereby reel up the continuously feeding wax sheet. Timer 63, having been energided by the closing of switch 6 I, is set to time out after a predetermined interval permitting the desired amount of Wax to be reeled onto the right fork. After the lapse of this inter val, timer 63 times out and energizes relay 6'! which operates to seal relay 61, de-energize relay 69 and energize relay 68. Relay 68 in turn operates to de-energize timer 63 for re-setting and starts timer 64 to time. De-energization of relay 69 closes the contacts to energize relay H which in turn closes to seal relay ll. After timer 63 has had approximately one to two seconds to re-set itself, timer 54 times out, opening to deenergize relay 61. De-energization of relay 6'! opens the contacts to break the seal, de-energizes relay 68 and closes to energize relay 69. Relay 68 opens to re-set timer 64 and closes to start timer 63. Relay 69 closes to energize relay 12 which in turn de-energizes the right shear solenoid 29a, closes to seal relay I2, closes to energize the left shear solenoid 29 causing the wax to be sheared and directed onto the left reel and left fork 28, and further closes to start timer 66 to time for a predetermined interval set to permit the wax sheet to pass into reeling position relative left fork 28. At the end of the predetermined interval for timer 66, the same times out, de-energizing thereby the left pawl or ratchet solenoid 43 of the bar 40, and energizes the right pawl or ratchet solenoid 44. This causes coil 44b to be drawn into solenoid coil 44 causing stop 42 to be pulled into stop position for the right fork 29. The wax reeled or Wound onto the right fork 29 can then be removed while the left fork 28 is rotating to reel in the wax sheet continuously feeding onto the same.

As a sufficient amount of wax has been reeled up onto the left fork 28 after a period pre-set therefor, timer 63 again times out, energizing and opens to re-set timer 66.

6 relay 61. Relay 61 upon being energized, closes to seal itself, opens to de-energize relay 69 and closes to energize relay 68, which in turn opens to file-energize timer 63 and closes to start timer 64 to time. Timer 63 opens, though there is no action as relay 6'! is sealed. Relay 69 opens to de-energize relay 10, which in turn opens to reset timer 65 and to de-energize relay H. Timer 65 opens without action. Relay ll opens to deenergize relay 72, which in turn opens tobreak the seal, de-energizes the left shear solenoid 29 Timer 66 opens to ole-energize the right hand pawl or ratchet solenoidJ While timer 64 was timing out, timer 63 has re-set. Timer 64 times out, openingto deenergize relay 67, which in turn opens to deenergize relay 68 and closes to energize relay 69. Relay 68 opens to re set timer 64 and closes to start timer 63 to time again. Timer 641closes. This completes one entire cycle of operations and the circuit is now again in the starting position. Both shear solenoids 29 and 20a and pawl solenoids 43 and'44 are de-energized. During this timing period of timer 63, relay 69 and relay (0 are energized which will again energize the right hand shear solenoid 20a and the operation continues for another cycle;

As may be also seen from the wiring diagram, instead of conducting all operations substantially automatically, manual control may be resorted to. Thus, transfer switch 62 may be placed in the hand controlled position, in which case safety switch 6! should be closed. Shear action: of the, knife 24a can then be controlled by manual switch l7. Fork action can be controlled by manual switch '18. All timers and relays are then cle-energized. I .i

I claim: l. Wax slabbing device comprising a substantiallycontinuously operating arrangement including two wax sheet winding means, wax sheet cutting means defining a first cutting edge and two second cutting edges, means for passing a continuously feeding sheet of wax to said wax sheet cutting means, means for actuating said cutting means for alternate cutting engagement of said first cutting edge with each of said second cutting edges, said cutting actuation and engagement of said first cutting edge with one of said second. cutting edges, shifting the direction of travel of such wax sheet from one to the other of said winding means.

2..Device according to claim 1 in which said actuating means include time switch means for actuating said cutting means at predetermined intervals. 1

3. Device according to claim 2 in which there are additionall included stop means for each of said winding means and each positioned and arranged to be actuable for stopping its winding means while the other is operating.

l. Device according to claim 3 in which there are additionally included means for substantially continuously alternately actuating said stop means at predetermined intervals and arranged to stop that winding means from. which the direction of travel of such wax sheet has been shifted upon the last actuation of said cutting means, and in which said stop actuating means are substantially synchronized with said cutting actuating means for a predetermined time lag of the former sufiicient to permit winding of the cut of! wax sheet portion by the operating winding means and passage of the'shifted wax sheet into a wax sheet between the knife means and the non-cutting edge when said knife means are in cutting engagement with the other edge, means for continuously feeding a sheet of wax to between said edges, first and second wax sheet winding means below said cutting edges, means for pivoting one of said knife means and said edges for alternate cutting engagement between said knife means and said edges at predetermined intervals, first means for guiding a wax sheet onto said first winding means from said first slot, second means for guiding such wax sheet onto said second winding means from said second slot, stop means for each of said winding means and each positioned and arranged to be actuable for stopping its winding means while the other is operating, and means for substantially continuously alternately actuating said stop means at predetermined intervals and arranged to stop that winding means from which the direction of travel of such wax sheet has been shifted by the pivoting of one of said knife means and edges upon'the last actuation thereof, and in which said stop actuating means are synchronized with said pivoting means for a predetermined time lag of the former sufficient to permit winding 'of the cut-off wax sheet portion of the operating winding means and passage of the shifted wax sheet into winding'position relative to the non-operating winding means.

.6. Wax slabbing device according to claim 5 in which said cutting edges defining means comprise a cutter bar having a substantially longitudinal slot forming said cutting edges with its lower opposing length edges, in which said knife means are substantially stationary, in which said cutter bar is substantially pivotably mounted, and in which said pivoting means are means for pivoting said cutter bar for alternate cutting engagement between said knife means and said cutting edges at predetermined. intervals.

'7. Waxslabbing device in accordance wit claim. 6 in which said pivoting means include time switch means for actuating the pivoting of said; cutter bar for cutting engagement at predetermined intervals.

8. Wax slabbing device in accordance. with claim '7 in which said pivoting means comprise a solenoid controlled pivot bar secured to said cut.- terbar, and in which said time switch means actuate the solenoids of the pivot bar at predetermined intervals.

9-. Wax slabbing device in accordance with claim 8 in which said stop means are carried by a pivotbar, and in which said stop actuating means are solenoids controlling the alternate pivoting of said last mentioned pivot bar.

10. Wax slabbing device in accordance with claim 5 in which said cutting edges defining means comprise. a cutter bar having a substantially longitudinal slotforming said cutting edges with its lower opposing length edges, in which said knife means are substantially pivotably mounted, in which said cutter bar is substantially stationary, and in which said pivoting means are means for pivoting said. knife means for alternate cutting engagement between said knife means and said cutting edges at predetermined intervals. 7

11. Wax slabbing device in accordance with claim 10 in which said pivoting means include time switchmeans for actuating the pivoting of said knife means for cutting engagement at predetermined intervals.

12.- Wax slabbing device in accordance with claim 11 in which said pivoting means comprise a solenoid controlled pivot bar secured to said knife means, and in which said time switch means actuate the solenoids of said pivot bar at predetermined intervals.

13. Wax slabbing device in accordance with claim 12 in which said stop means are carried by a pivot bar, and in which said stop actuating means are-solenoids controlling the alternate pivoting of said last mentioned pivot bar.

. ANGELO J. BEVEVINO.

References Cited in the file of this patent UNITED STATES PATENTS 2.319.040 Conklin May 11.

Images