US1813974A - Wrapping machine - Google Patents

Description

July 14, 1931. H. E. TowNsEND v 1,813,974

WRAPPING MACHINE Filed May 5, 192B 2 Sheets-Sheet l 92 l f" G INVENTOR.

H. E. To w/vsE/vn' A TTORNEYS.

July 14, 1931. H. E. TowNsEND' 1,813,974

WRAPPING MACHINE Filed May 3. 192s 2 sheets-sheet 2 IN V EN TOR.

K A TTORNE-YS.

Patented July 14, 193,1

HARRY E. TOWNBEND, OF BROOKLYN, NEW YQBK WRAIPPING MACHINE Application iiled Hay 8, 1928. Serial No. 274,710.

My invention relates particularly to machines for wrapping hard candies and other articles that are in the form of circular disks, and has for its object to improve the construction and mode of operation of machines of this character.

The several features of the invention,

whereb`y this object is attained, will be .clearly understood from the following description and accompanying drawings, in which:

Figure 1 is a longitudinal sectional view of a portion of a Wrapping machine embodying the features of the invention in their preferred form;

Fig. 2 is a diagrammatical view corresponding to a portion of Fig. 1 but showing certain parts in a different position; and

Fig. 3 is a front view, partly broken away, of a portion of the machine.

The machine illustrated in the drawings 1s ,of the type of the one described and claimed in my pending application Serial No. 74,293, filed December 9, 1925. As shown, the machine is rovided with lower and upper wrapping rolls 2 and 4, respectively, arranged horizontall in the same vertical plane for receiving t e article to be wrap ed between them, and is further provided with retaining -rolls 6 forngaging opposite sides 'of the ara'o ticle so as to retain the article between the wrapping rolls during the wrapping opera-- t-ion. The wrapping rolls4 serve to wind the wra per about the article with the ends of tlie Wrapper projecting beyond the ends of the article, and tucking members 8 are arranged adjacent the ends of the lower roll for tucking in the projecting ends of the wrapper over the ends of the article after the wrapper has been wound about the article. The lower wrapping roll is carried by a shaft 10 which drives the roll in suitable timed relation to other parts of the machine. The upper roll 4 is carried by a shaft 12 which drives the roll at the same peripheral speed as the lower roll. The shaft 12 extends through a bearing in the end f a carrier lever 14 fulcrumed on a stud shaft 16 projecting from the machine frame. The retaining rolls 6 are mounted on the outer ends of stud shafts 18 which have their Iinner ends secured to the ends of arms 20 which are pivotally mounted upon the stud shaft 12 at opposite sides of the carrier lever 14. The strip of wrapping material 22, from which the wrappers are formed, is fed downwardly by means of feed rolls 24 between cutting knives 26, the lower end portion of the strip being fed across the path of the article as the article is carried to the wrapping rolls. A suitable article conveying device 28 conveys the articles to the wrapping rolls. v

Except as hereinafter described, the parts above referred to may be and preferably are v the same in both construction and mode of operation as the corresponding parts of the machine of said pending application Ser. No. 74,293, to which reference may be had for a full and complete description of the same. In the illustrated construction, the lower wrapping roll 2 is of relatively large diameter, and the tucking members 8 are carried by the ends of the roll. Each tucking member comprises a late having projecting arms that are pivotal y mounted on lthe ends of a pivot pin 30 which extends through a bracket plate 32 secured onthe end of the roll. Each tucking member is pressed toward the end of the roll by means of a leaf spring 34 having one end secured to a bracket bar 36 secured on theend of the roll and its other end bearing on'the free end of the tucking memv ber. The free end `ofthetucking member is provided with a series of suitably formed tucking fingers 38 which project beyond the pelrlipheral surface of the lower wrapping ro The upper wrappingroll 4 is raised and lowered through connection with a cam 40 carried by a shaft 42, the shaftbeing driven as by a chain 44 which passes over a sprocket wheel secured on the shaft. Said .connection comprises a. rod 46 which has one end pivotally connected with the ends of an extension 48 on the carrier lever 14, and its other end pivotally connected to the outer end of a cam lever 50 pivoted at 52 on the machine frame and provided with a cam roll 54 on its other end which engages the cam 40, the cam roll being held in engagement with the cam b means of a coiled spring 56 connected wit 100 the outer end of the cam lever. The retaining rolls 6 are moved toward and from the sides of the articles by connection with a cam 58 carried by the shaft 42. This connection comprises rods 60 which h ave their u pper ends pivotally connected wlth the retaimng roll shafts 18, and the lower ends of both of them pivotally connected with one end of a cam lever 62 fulcrumed at 64 on the machine frame. This cam lever 62 carries a cam roll 66 which engages the cam 58, the roll being held in engagement with the cam by means of a coiled spring 70 connected with the outer end of the cam lever.

The machine is further provided with a plurality of tucking fingers 72 for tucking in one end of the wrapper over'the back of the article, the ends of the t-ucking fingers being curved to conform with the peripheral surface of the article. These tucking fingers 72 are inclined downwardly and rearwardly and are reciprocated longitudinally toward and from the article, the lower wrapping roll 2 being provided with annular clearance grooves 74 through which the fingers work. The tucking fingers 72 are carried by a longitudinally movable carrier 7 6 which is guided at its lower end by a roll 78 secured thereon which works in a guideway 80 on a bracket block secured to the machine frame. The carrier 76 is pivotally connected at a point spaced a distance from its lower end with the rear end of a cam arm 82 which has its other end secured on a rock-shaft 84. The cam arm 82 carries a cam roll 86 which is engaged by a cam 88 carried by the cam shaft 42, the cam roll being held in engagement with the cam by means of a coiled spring 90 connected with an arm 92 secured to the rock shaft 84.

In the operation of the machine, as the article is conveyed by the device 28 to the wrapping rolls, it engages the lower end portion of the strip 22 and carries it therewith to its position between the wrapping rolls. As the article approaches its position between the wrapping rolls, the actuating cam 40 for the upper roll permits this roll to be moved downwardly by its spring 56 so as tocause the said lower portion of the strip to be tightly drawn about the forward portion of the article. The tucking fingers 72 then act to tuck in or lay the lower end of the strip up against the back ortion of the article. Immediately following this operation the cutting knives 26 cut off the length of the strip 22 extending below the knives to form the completed wrapper, and the retaining rolls are moved downwardly by their spring to engage the sides of the partly7 wrapped article, the rear retaining roll ten ing to bend the projecting upper portion of the wrapper down over the lower end portion which is still held in position by the tucking lingers 72.

per has thus been completely wound about the article and during the continued rotation of the wrapping rolls, the tucking members i8 ac t totuck in the ends of the wrapper over the ends of the article, the tuckin members being yieldingly pressed against t e ends of the article so as to insure tight and even tucks being formed. After the article has thus been completely wrapped, the upper wrap ing roll 4 and the retaining rolls 6 are raise out of engagement with the article so as to permit the article to be removed and vto permit the next article to be wrapped to be delivered to them.

In the illustrated construction, the wrapper is of suflicient length and the lower wrapping roll is of sufficient diameter to cause the wrapper to be wound twice around the roll before the tucking members act to tuck in the ends of the wrap er.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope of the appended claims.

, What I claim is:

1. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls for winding a wrapper about the peripheral surface of the article, and devices carried by one of the rolls for tucking in the ends of the wrapper over the ends of the article and for yieldingly pressing the tucked in ends of the wrapperA against the ends of the article.

2. A machine for wrapping a cylindrical article of the classdescribed having, in combination, wrapping rolls forwinding a wrapper about the peripheral surface of the article, and means for tuckin in the ends of the wrapper over the ends o the article comprising tucking members pivotally mounted adjacent the ends of one of the rolls, and means for yieldingly pressing said members toward the ends of the article during the tucking operation.

3. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls for-winding a'wrapper about the peripheral surface of the article, and devices rotating simultaneously with one of the rolls for tucking in the ends of the wrapper over the ends of the article after the wrapper has been wound at least once completely around the article.

4. A machine for wra ping a cylindrical article of the class descr ed having, in com-- v bination, wrapping rolls for winding a wrap per about the peripheral surface of the article, and means for tucking in the ends of the wrapper over the ends of the article comlli) prising tucking members mounted on the ends of one of the rolls so as to rotate with said roll, and springs for yieldingly pressing said members toward the ends of the article during the tucking operation.

5. A machine for wra ping a cylindrical article of the class described having, in combination, wrapping rolls for winding a wrapper about the peripheral surface of the article, and means for tucking in the ends of the wrapper over` the ends of the article comprism members extending over the ends of one o the wrapping rolls, each havingone end pivotally mounted on the roll and its other end provided with a plurality of tucking fingers projecting beyond the peripheral surface of the roll, and sprin for yieldingly pressing the outer ends o said members toward the ends of the`article during the s tucking operation.

6. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls, means for delivering the article to a osition between the rolls, means for feeding t e end of a strip of wrapping material across the path of the article whereby one end portion of the strip is carried by the article to the wrapping rolls, means for cutting off a length of thestrip to form a completed wrapper after the article has been delivered to the rolls, and means for bending in one end of the wrapper against the article whereby upon subsequent rotation of the rolls the wrapper will be wound about the article, said bending in of one end of the wrapper and the winding of the wrapper about the article being e`ected while the article is heldin fixed position with relation to the wrap ing rolls.

7. A machine for wra ping a cylindrical article of the class descri ed having, in combination, wrapping rolls horizontally arranged, means for delivering the article to a position between the rolls, means for feeding the end of a strip of wrapping material downwardly across the path of the article whereby the lower portion of the strip is carried by the article to the wrapping rolls, means for cutting oif a length o the strip to form a com leted wrapper after the article has been de ivered to the rolls, and means for bending in the lower end of the wrapper against the article whereby upon subsequent rotation of the rolls the wrapper will be wound about the article, said bendin in of one end of the wrapper and the win ing of the wrapper about the article being effected while the article is held in fixed position with relation to the wrapping rolls.

8. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls horizontally arranged, means for elivering the article to a position between he rolls, means for feeding the end of a st fp of wiiapping material downwardly across the path of the article whereby the lower end portion of the strip is carried by the article to the wrapping rolls, means for cutting ofi' a length of the strip to form a completed wrapper after the article has been delivered to the rolls, means for bending in the lower end of the wrapper against the article, and means for bringing the other end portion of the wrapper down Vover the tucked in end portion and holding it in position during the subsequent rotation of the wrapping rolls, said bending in of the lower end of the wrapper against the article and bringing the other end portions of the wrapper down over the tucked in end portion, being effected while the article is held in fixed position with relation to the wrapping rolls.

9. A machine for wra ping a cylindrical article of the class described having, in combination, wrapping rolls arranged one above the other, bmeans for delivering an article wlth its wrapper to a position between the rolls, and means com rising longitudinally reciprocating fingers or bending in one endportion of the wrapper against the article whereby upon subsequent Yrotation of the wrapping rolls the wrapper will be lwound about the article with said bent in end underlying, said bending in of one end portion of the wrapper and said winding of the wrapper about the'article being effected while the article is held in fixed position with relation to the wrapping rolls.

10. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping'rolls, one of the rolls having a plurality of annular grooves, means for deliverin an article with its wrapper to a osition etween the rolls, and means for ending in one end of the wrapper against the article comprising longitudinally reciprocating fingers working through said grooves in the roll. f

11. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls, means for deliver-` ing an article with its wrapper to a position between the rolls, a carrier vlongitudinally movable, lingers mounted on the carrier andmovable therewith for bending in one end of the wrapper against the article, and means comprising a cam for actuating the carrier.

12. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls arranged horizontally one above the other and adapted to receive an article and its wrapper between them, means comprising a cam and'suitable connections forpmoving the upper roll downwardly into a position to engage the article as the article is presented to the rolls, retaining rolls for engagement with opposite sides of the article to retain the article between the wrapping rolls, and means comprising a second cam and suitable connections for moving the retaining rolls toward and from the article.

13. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls for winding a wrapper about the peripheral surface of the article while the axes of the wrapping rolls and article are held in relatively fixed position, and devices carried by one of the wrapping rolls for tucking in the ends of the wrapper over the ends of the article after the wrapper has been wound at least once around thearticle by the Wrapping rolls.

14. A machine for wrapping a cylindrical article of the class described having, in combination, wrapping rolls arranged one above the other, means for delivering the article to a position between the rolls w1th the axis of the article in the plane of the axes of the rolls, means for feeding the end of a strip of wrapping material downwardly across the path of the article whereby the lower end portion of the strip is carried by the article to the wrapping rolls, means for cutting off a length of the strip to form a completed wrapper after the article has been delivered to the rolls, devices for bending the lower end of the wrapper upwardly against the article and for bending the unwrapped other end portion of the wrapper downwardly over said lower bent in end thereof, and means for subsequently rotating the rolls to cause the wrapper to be wound about the article.

In testimony whereof, I have signed my name to this specification this 1st day of May,

i HARRY E. TOWNSEND.

Images