Патент USA US2116259код для вставки
May 3, 1938. l.. BENOIT ET Al. ‘ SEALING ME’CHANISM Flled June 8, 1936 l . 2,116,259 4 Sheets-Sheet 1 " May à, 193s. ' L. BENCH Er AL 2,116,259 SEALING MECHANISM Filed June 8, 1936 4 Sheets-Sheet 24 May 3, 1938. 2,116,259 L. BENOIT Er AL SEALING MECHANI SM Filed June 8, >1956 ` 4 Sheets-Sheet 3 v _zèlf/@gén éga/¿gevang Q@ gé fd/ßvíí, .l , ä ` n A À May 3, 1938. . L. BENolT grr AL 2,116,259 SEALING >MECHANISM Filed June 8, 1956 4 Sheets-Sheet 4 2,116,259 Patented May 3, 1938 UNiTE D1 STÀTES PATENT ermee 2,116,259/ SEALING MECIHANISM Leon Benoit, New York, N. Y., and Clifford C. Moth, Tenañy, N. J.; said Moth assigner to said Benoit V¿implication June s, 1936, serial No. 84,152 5 Claims. The -device of the present invention in the form `shown is particularly designed for use in con junction with a carton closing machine of the cnU type illustrated in a copending application, Serial No. 81,208, ñled May 22, 1936, although the pres ent sealing mechanism may be otherwise em ployed, either in conjunction with carton closing accurately, uniformly and rapidly, irrespective of mechanism or for the purpose of sealing cartons the speed with which the cartons are delivered. Further objects and details will appear from closed by hand, or for the application of stamps, "in seals or the like, to cartons, boxes, or other ob jects generally. walls each terminating in a cover flap adapted to be folded inwardly and downwardly to over ierred to; structed as to pro-vide a carton body having side lie the carton body. Each of the cover flaps ter ininates in a marginal tucking flap, and when inwardly toward the sealing mechanism‘irom the discharge end and toward the procession of on Contact with one another along the longitudinal Fig. 3 is a detail of the star wheel and the restoring ydevice for resetting the same in the center partition which is afforded by folding the carton body along the longitudinal center. The carton body itself affords two trough-shaped compartments which are divided into cells by the Thesealing machine is designed to be actuated by the passage of each carton in a procession of iilled cartons and to feed’ downwardly a section of gummed tape from a` roll and to sever the sec tion and apply the same to the joint or seam af 4:0 l Fig. 2 is an end elevation of the same looking closed the two tucking naps extend downwardly in vertical relation to the carton body and in -provision 'of vertical cross partitions which are entered through slots in the trough-shaped di visions of the body with which they interlock. The bases of the cross partitions extend below 30 the body walls and furnish the base upon which the carton is supported, and the cross partitions also aiïord cross abutments for actuating the feeding mechanism of the present sealing appa-V ratus in the manner to be hereafter described. 135 a description of the invention in conjunctionwith < the accompanying drawings, wherein,” Figure 1 is a side elevation of the invention showing the‘same mounted upon the terminus of a carton closing machine of the character cle scribed in the copending application above re~ 15 `The mechanism is designed primarily to seal‘ the cover llaps of an egg carton which is so con "25 application through a strip of wicking to the gummed surface of the tape. 'The invention is also directed to the correlating and timing of the mechanisms provided for feed ing, cutting“ and applying the severed sealing “ Ul strips so that the sealing operations will proceed forded between the turned down tucking flaps, the arrangement being such that each carton upon its arrival will initiate >and complete the cycle of sealing operations, after which the seal ing mechanism will stand idle until the arrival 45 of the next succeeding carton. The invention also includes means for restor ing the sealing mechanism to its normal idle position in the event that it should get out of step for any reason, which is a highly desirable fea ture in order to insure the application of the seals uniformly to the intended position upon the carton. The invention also includes means for moistening the adhesive and for regulating 55 the supply of water to the moistening bath for coming cartons; Y event it gets out of step; Fig. 4 is a similar View showing the parts in a different operative position; 25 Fig. 5 is a detail taken on line 5 of Fig. 2 show ing the presser roller for exerting pressure upon the sealing strip applied to the carton; Fig. 6 is a sectional elevation through the cen ter of the sealing mechanism; and 30 Fig. '7 is a detail showing the cutting knife and associated parts for operating the same. The sealing mechanism of the present inven tion is mounted at the terminus of the closing machine and is suitably supported upon bed plates In, It] which stand in spaced relation to one another and project outwardly beyond the framework I l of the closing machine, although the sealing mechanism might obviously be sup ported in 'any suitable or convenient manner. The cartons are fed to the sealing machine by means of an endless. chain conveyor I2 having outstanding teeth or lugs I3, which in the pres ent instance are suitably spaced to act upon alter nate cross partitions M of the cartons. The car tons rest upon suitably driven conveyor belts I5 so that the advance of- the cartons will be occa sioned by the` positive action of the teeth or lugs I3 supplemented by the conveying action of the belts I5~ The conveyor chain I2 passes 50 around a sprocket wheel I6 which is power driven either directly or through the- mediation of the sprocket chain I2. The bed plates Il] are suitably spaced to permit the teeth or lugs I3 on the upper turn of the conveyor chain I2 to pro 65 2 2,116,259 ject upwardly in position to engage the cross walls I 4, and immediately in advance of the sprocket I6 is located a star wheel I1 having seven teeth I8 so spaced as to be engaged by the seven cross UI partitions I4 of the carton. It will be noted from Fig. 2 that the carton is provided with a body I9 which is bent or folded to 50 passes under the roller 53 and the spring 51 draws the arm 54 forward to release the knife. The star wheel shaft 23 at its opposite end car ries a cam 58 operating upon a roller 58 carried by an arm 60 slotted at its lower` end 6I to em brace the shaft 23. The upper end of the arm 60 is pivoted to a swinging arm 62 freely mounted upon a shaft 63 to which the feed roll 35 is keyed. furnish two trough-shaped channels separated by a center partition 20 and that the cover flaps rI‘he shaft is provided with a ratchet wheel 64 co acting with a dog 65 pivoted upon the end of the 10 10 2| are each provided with a marginal tucking flap 22 which are tucked downwardly into the . swinging arm 62 and spring pressed to engage the teeth of the ratchet 64 for imparting a limited ro carton body within the space adjacent to the lon gitudinal partition 28. The configuration is one tation to the shaft 63. The arm 60 acts against which permits the exposed centers of the cross the tension of a spring 66. The cam 58 in its relation to the swing of the 15 partitions I4'to engage the teeth of the star wheel arm 62 is computed to gradually feed forward and impart the necessary motion thereto to ac the gummed section of the intended length in ad tuate the sealing mechanisms now to be de vance of the release of the knife 44, and thereaf scribed. The star wheel I1 is mounted upon a shaft 23 ter, upon the restoration of the knife, to continue journalled within brackets 24 hung from the bed the feeding operation suñîciently to bring the ter 20 plates I8. The bed plates furnish a support for minus of the gummed strip beneath the guide rod spaced standards 25, which constitute the frame 41 in preparation for the next succeeding feed for the sealing mechanism. The standards -at ing and cutting operation. The wicking sw-ab 49 projects outwardly their outer ends 26 are bifurcated to afford through the forward wall 61 of a tank 68 having 25 25 mountings for the reduced ends 21 of a spindle 28 which carries a spool 2S upon which is mounted a roll 30 of adherent tape. The roll is supported `upon a pair of rollers 3l journalled at the ends of cross arms 32 on the standards and suitably 30 spaced to support the tape roll 30 so that as the roll is depleted the spindle 28 will work down wardly through the slotted ends 26 without in terfering with the feeding of the strip from the roll. 35 The strip is carried outwardly around a guide rail 33 and along the surface of an inclined guide plate 34, and through the bite of a feed roll 35 and a serrated idle presser roll 36, which roll is mounted upon a shaft 31 carried by spring bars 40 38, each of which at its upper end is secured to a block 36 supported by the guide plate 34. The blocks 39 also afford a mounting for shoulder screws 48 which pivot a swinging yoke 4I of in verted U-formation having side arms 42 and an 45 inverted cross head 43 carrying a serrated knife 44 which operates through a cross slot 45 in the guide plate 34. The blocks afford a mounting for a guide bar 48a under which the strip is carried. The guide plate is also provided with an aperture 46 through which the surface of the feed roll 35 projects, and immediately below the cutting aperture 45 is located a cross guide bar 41 which serves to hold the sealing strip in position against the surface of the guide plate 34. TheV lower end of the sealing strip is carried beneath a presser roll 48 which is positioned to press down the sev ered strip section upon the surface of the car ton. Before delivery to the carton, however, the gummed strip is moistened by contact with the 60 outwardly projecting end of a swab of wicking 49, which is moistened in a manner presently to be described. The feed roll 35 and the knife 44 are both posi tively actuated through transmission mechanism 65 in train with the star wheel shaft 23. The means for actuating the knife comprises a cam 58 hav ing a maximum elevation 5| andn an abrupt shoulder 52. The cam bears upon a roller 53 car ried by an arm 54 which is Slotted at its lower 70 end 55 to embrace the shaft 23. The upper end of the arm 54 is pivoted to a bracket arm 56 car ried by the swinging yoke 4I, and the arm is drawn inwardly by the action of a spring 51. This arrangement affords a sudden cutting move 75 ment to the knife as the shoulder 52 of the cam a well 59. The wicking is supported upon an in clined plate 18, and the well receives the lower end of a supply pipe 1I which at its upper end receives the inverted mouth of a globe shaped bottle 12 carried by a suitable holder 13, the bottle 30 being held in place by a spring arm 14. The arrangement is one which limits the feeding from the bottle, which constitutes a -reserve reservoir, since the feeding will cease as soon as the water level rises sufficiently to immerse the discharge 35 end of the tube 1I, thereby preventing ingress of air upwardly into the bottle. The inner end of the wicking swab is thus immersed to the in tended degree to draw up the amount of moisture necessary to moisten the gummed strip as it is 40 carried downwardly in contact with the end of the wicking swab. The roller 48 is carried by arms 15 projecting inwardly from a cross rod 16 carried by standards 11. The rod has mounted thereon a yoke 18 having a finger 16 which embraces a pin 88 pro jecting from one of the standards 11, which pin mounts a spring _8l adapted to be regulated by lock nuts 52, the arrangement being such as to positively limit the down swinging movement of 50 the yoke 18 and thus limit the downward pressure of the roller 48. The upward movement will be resisted by the spring 8l which when properly ad justed serves to impart the desired pressure to the severed section of the sealing strip to seal the same upon the carton as the latter passes beneath the roller 48. If by any chance the strip feeding mecha nism should get out of step with the advance of the cartons, unless corrected this would have the 60 effect of applying the seal at the wrong point on the carton, and provision is made to correct such pcssible mal-adjustment of the parts by the means now to be described. The star wheel shaft 23 has keyed thereon a mutilated ratchet wheel 83 having at one point in its periphery a plane section 84. 'I'he ratchet wheel coacts with a dog 85 carried by a swinging arm 86 loosely mounted on the shaft, the dog be ing held in engagement with the ratchet teeth by 70 a spring 81. The swinging arm 86 has pivoted thereto a rocking arm 88 which is slotted at its opposite end 89 to embrace the shaft 90 which carries the conveyor sprocket I6 and which is constantly driven at uniform speed during the 75 A2,116,259 operation of the Ímachine. The shaft 90 has keyed thereon a >star shaped cam 9|A having, as shown, four rounded arms 92 which bear against a roller 93‘on the rocking arm 88 and serve'to advance » the spring 94. ` arm against the tension of a Y The projection ofthe ratchet teeth is such as to permit them to slip past` the dog 85 during the normal rotation of the star wheel Il» when 10 carried around by the advance ofthe carton. If 3 which the sealed carton passes to the discharge end of the machine and is removed. By utilizing the carton itself as the means for actuating the sealing mechanism, and by provid ing means to effect a restoration of the parts to normal position in the event of mal-adjustment, an accurate sealing of the cartons can be se cured at all times irrespective of the speed of arrival 'or the speed of passage through the ma chine. '10 Although the mechanism has been described the star wheel and associated parts-are properly in step, the final passage of the carton will bring with particular reference to the sealing of a car the plane section 84 of the ratchet wheel around ton having `cross partitions of the character to the point of contact with the dog 85, so that shown, it is not the intention to limit the inven 15 the latter will Vreciprocate idly upon the plane tion in any way to the sealing of cartons of this surface thus presented. If, however, the passage 'particular character, since the mechanism can be ofthe carton should leave the star wheel and employed for the application of seals, stamps, or associated parts out of proper position with rela other gummed stickers, to boxes or other articles tion to the coacting cartons, a toothed portion adapted to be fed through the machine, particu of the ratchet wheel 83 will `be presented to the larly when the same are adapted, `by reason of dog 85, so that the reciprocation of the dog will ' ‘their configuration, to initiate the train of opera f20 turn the star wheel shaft 23 to the degree neces tions required in feeding, moistening, cutting and sary to bring the plane section around to the dog applying the seals to the objects thus fed through and thus restore the parts to their intended posi the machine, so that, unless otherwise indicated, 25 tion so that the next succeeding carton will feed it will be understood that in referring to cartons and‘apply the seal at the intended point. we have in mind other forms of receptacles or By the provision of the restoring mechanism, objects having the required form or configuration therefore, the operation of the star wheel is' so to be acted upon in accordance with the principles regulated th-at it will always be set to uniform of the present invention. 30 position in advance of the arrival of an oncoming We claim: Y "30 carton. During the passage of a carton, the 1. In a sealing mechanism, the combination of dog 85 in engagement with a ratchet tooth will, vmeans for advancing an object to be sealed, means on its active movements, follow‘the tooth around for sup-porting an adhesive strip, devices for feed at the same rate of travel, and on its return ing a predetermined section of said strip to the movements will slip idly over the ratchet teeth, so object to be sealed with each actuation of the T35 that the dog only becomes functionally active in mechanism, a moistening device located at a case the ratchet'wheel `should stop rotating at a point between the feeding devices and the means point at which the dog engages a ratchet tooth for advancing the object for supplying moisture to during its active swing, in which event it will im a previously umnoistened section of the strip dur 40 part a restoring movement to the shaft 23 in ing its advancement to the sealing position, means the amount required' to bring the shaft around for severing the advanced section at a point be to its normal position. tween the feeding and moistening devices, a mem ber adapted to be engaged and have motion im Operation 45 The operation of the device may be briefly parted thereto by the passage of an object to be sealed, and mechanisms operated by power im summarized as> follows: The filled cartons will be parted by said moving member for actuating the 45 positively advanced to the sealing position by the engagement of the teeth or lugs I3 with the cross partitions of the carton, assisted by the carrier 50 belts l5 upon which the base of the carton rests. During such advancement the alternate cross partitions of the carton will encounter the teeth of the star wheel and impart a definite or com strip feeding and severing devices in timed rela tion to feed the leading end of the strip to a posi tion to secure adherent contact with the advanc ing object ‘before the severing mechanisms are 50 actuated and to thereafter again feed the lead ing edge of the unsevered strip to a position below severing devices in preparation for the next puted degree of rotation to the star wheel shaft. « the cycle of operations. This turns the cams 5| :and 59 to the degree re 2. In a sealing mechanism, the combination of 55 quired to ñrst feed down a section of the means for advancing an object to be sealed, means gummed strip of the intended length and there after suddenly release the knife or cutter 44 for supporting an adhesive strip, devices for feed ing a predetermined section of said strip to the which severs the sealing section from the re object to be sealed with each actuation of the GO mainder of the strip. mechanism, a moistening device located between 60 During the down feeding of the strip it will be moistened by the wicking swab 49 and its leading the feeding devices and the means for advancing edge will be brought into contact with the top the object for supplying moisture to a previously unmoistened section of the strip during its ad surface of the advancing carton, thereby caus ing an adherent contact to be established at the vancement to the sealing position, means forinstant the gummed sealing section passes under severing the advanced section at a point between 65 the roll 48. At this instant the knife will descend the feeding and moistening devices, a rotatably and sever the section, which will thus be drawn mounted member adapted to be engaged by the passage of an object to be sealed, and mechanisms _ down by the advancement of the carton and press in train therewith'and adapted to be operated by 70 down onto the surface to effect the sealing opera tion. After the knife has been withdrawn, the the rotation thereof for imparting feeding and 70 feeding of the main sealing strip will continue severing movements to the feeding and severing slightly until its leading edge has been brought mechanisms in timed relation to feed the leading end of the strip to a position to secure adherent beneath the guide rod 4l', which concludes the ‘ 75 operations performed by the mechanism, after >contact with the advancing object before the severing mechanisms are actuated. 75 2,116,259 4 3. In a sealing mechanism, the combination of means for advancing an obj ect to be sealed, means for supporting an adhesive strip, devices for feed ing a predetermined section of said strip to the object to be sealed with each actuation of the mechanism, a moistening device located between the feeding devices and the means for advancing the object for supplying moisture to a previously unmoistened section of the strip during its ad 10 vancement to the sealing position, means for severing the advanced section at a point between the feeding and moistening devices, a rotatable star wheel having teeth adapted to be engaged by the object being sealed, cams operated by the ro 15 tation of the star wheel, and connections between said cams and the strip feeding and severing mechanisms respectively for operating said mech anisms by movements imparted to the star wheel and in timed relation to feed the leading end of 20 the strip to a position to secure adherent contact with the advancing object before the severing mechanisms are actuated. > 4. In a sealing mechanism, the combination of means for advancing an object to be sealed, means 25 for supporting an adhesive strip, devices for feed ing a predetermined section of said strip to the object to be sealed with each actuation of the mechanism, a moistening device located between the feeding devices and the means for advancing 30 the object for supplying moisture to a previously unmoistened section of the strip during its ad vancement to the sealing position, means for severing the advanced section at a point be tween the feeding and moistening devices, a ro 35 tatable star wheel having teeth adapted to be ing end of the strip to a position to secure ad herent contact with the advancing object before the severing mechanisms are actuated, and con stantly actuated restoring mechanisms adapted to restore the star wheel to normal position in the event of mal-adjustment. 5. In a sealing mechanism, the combination of means for advancing an object to be sealed, means for supporting an adhesive strip, devices for feeding a predetermined section of said strip to the object to be sealed with each actuation of the mechanism, a moistening device located be tween the feeding devices and the means for ad vancing the object for supplying moisture to a previously unmoistened section of the strip dur ing its advancement to the sealing position, means for severing the advanced section at a point be tween the feeding and moistening devices, a ro tatable star wheel having teeth adapted to be en gaged by the object being sealed, cams operated by the rotation of the star wheel, connections be tween said cams and the strip feeding and sever ing mechanisms respectively for operating said mechanisms by movements imparted to the star wheel and in timed relation to feed the leading end of the strip to a position to secure adherent contact with the advancing object before the severing mechanisms are actuated, a restoring mechanism comprising a rocking arm and means for imparting constant rocking movements there to, a dog actuated by the rocking arm, and a ratchet having fixed relation to the star wheel and provided With a smooth section adapted to permit idle reciprocation of the dog'when the star wheel stands in normal position and to permit effective ` engaged by the object being sealed, cams oper engagement between the dog and the ratchet to ated by the rotation of the star wheel, connec tions between said cams and the strip feeding and tended step with the obj ects to be sealed. severing mechanisms respectively for operating 40 said mechanisms by movements imparted to the star wheel and in timed relation to feed the lead occur when the star wheel gets out of its in LEON BENOIT. CLIFFORD C. MOTH.