US3001505A

US3001505A - Viscous liquid applicator

Info

Publication number: US3001505A
Application number: US728637A
Authority: US
Inventors: Novick Abraham
Original assignee: FL Smithe Machine Co Inc
Current assignee: FL Smithe Machine Co Inc
Priority date: 1958-04-15
Filing date: 1958-04-15
Publication date: 1961-09-26
Anticipated expiration: 1978-09-26

Description

Sept. 26, 1961 A. NQVICK 3,0

VISCOUS LIQUID APPLICATOR Filed April 15, 1958 3 Sheets-Sheet 1 65 INVENTOR 143 1? 604M /Vo v/c BY W MQZM TTORNEYS Sept. 26, 1961 ov cK VISCOUS LIQUID APPLICATOR 3 Sheets-Sheet 2 Filed April 15, 1958 R O T N E V N y wyw ATTORNEYS 3 Sheets-Sheet 3 Filed April 15, 1958 TTORNEYS 3,001,505 VISCOUS LIQUID APPLICATOR Abraham Novick, Flushing, N.Y., assiguor to F. L.

Smithe Machine Co., Inc., New York, N.Y., a corporation of New York Filed Apr. 15, 1958, Ser. No. 728,637 14 Claims. (Cl. 118--212) This invention relates in general to adhesive applicators and particularly to a new and useful adhesive applicator having an angularly disposed rotating applicator die for applying adhesive to work advanced along a path spaced laterally from an adhesive reservoir.

Previously, with adhesive applicators, it was necessary to advance items requiring adhesive, such as envelope blanks for example, beneath a reservoir of the adhesive in order to effect transfer of the adhesive to the envelope blanks. Such mechanisms had the obvious disadvantage of contaminating the blank feeding line with adhesive.

In accordance with the present invention, there is provided a novel arrangement of mechanism including a transfer segment arranged for rotation at an oblique angle to the work forwarding area, to permit transfer ofadhesives from a reservoir spaced laterally from the work advancing area.

Accordingly, it is an object of this invention to provide an improved adhesive applicator mechanism.

A further object of the invention is to provide an adhesive applicator mechanism including a constantly rotating applicator segment die arranged obliquely to the work advancing area and effective to contact and pick up adhesive from a reservoir roller and transfer it to work pieces advanced along a path laterally spaced from a reservoir of the adhesive.

A further object of the invention is to provide an adhesive applicator which is simple in design, rugged in construction and economical to manufacture.

The various features of novelty which characterize the invention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of the invention, its operating advantages, and specific objects obtained by its use, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated and described a preferred embodiment of the invention.

In the drawings:

FIG. 1 is a somewhat schematic perspective view of a portion of an envelope machine indicating the improved adhesive applicator die segment mechanism constructed in accordance with this invention;

FIG. 2 is a fragmentary top plan of a portion of an envelope machine indicating the improved adhesive applicator constructed in accordance with the invention;

FIG. 3 is a fragmentary front elevation of the apparatus shown in FIG. 2;

FIG. 4 is a vertical section taken on the line 44 of FIG. 3; and

FIG. 5 is a vertical section taken on the line 5-5 of FIG. 2.

Referring to the drawings in particular, the invention as embodied therein includes a glue applicator mechanism generally designated (FIG. 2), arranged on one side of a moving conveyor 12 which forms part of an envelope making machine (a portion of which is shown). It should be appreciated that while the mechanism will be described with particular reference to the application of adhesive to envelope blanks, the invention is equally applicable for applying glue to any work pieces advanced into operative association therewith.

In the present instance, envelope blanks 14 are arranged in equally spaced locations on the conveyor 12 by known mechanism (not shown) and are advanced in precise States Patent timed movement into operative association with the adhesive-applying mechanism 10 for the application of adhesive along an area of predetermined width and elongation.

The glue applicator 10 is supported from a main frame 16 of the envelope-making machine on a cros member 18 which extends transversely of the conveyor 12. The mechanism 10 includes a large bracket casting generally designated 20 which fits around and is slidable along the member 18. The complete applicator assembly is secured at a preselected position along the member 18 by bolts which extend through a backing plate 21 and into the casting 20. The bracket casting 20 includes a bearing portion 22 which rotatably supports a main drive shaft 24. The drive shaft 24 is provided with a suitable gear (not shown) arranged to receive power from other operating portions of the mechanism and to rotate the shaft in precise timed relationship to envelope blank advance. The shaft 24 is also provided with a gear 26 which is afiixed thereto and rotates therewith, and. which engages a gear 28 affixed to a shaft 30. The shaft 30 is supported in spaced bearing portions 32 and 34 of the bracket casting 20.

The end of the shaft 30 outboard of the portion 34 is provided with a gear 36 which drives through two idler gears 38 and 40 to a gear 42 affixed to a reservoir roller shaft 44. The extreme end of the reservoir roller shaft i4 is splined as at 45 to receive a crank handle for jacking the mechanism to free the moving parts of adhesive prior to its initial operation after a shut-down.

The shaft 44- is rotatably supported on a laterally extending portion 46 of the bracket casting 20. Afiixed to the shaft 44 is a reservoir roller 48 which is constantly rotated in an adhesive bath 50 of the reservoir tank 52. The tank 52 is supported by the bracket casting 20 by bolts 54 which are threaded into upstanding bosses 56 formed in the bottom of the tank 52. i A stationary scraper plate 58 is afiixed to the bracket portion 20 and has a side 60 which is positioned adjacent one side of the reservoir roller 43 to prevent excessive pick-up of adhesive on the roller along this side.

A side 62 of the roller 48 which is adjacent the outer edge of the reservoir tank 52 is utilized to pick-up and transfer adhesive. In accordance with the invention, in order to insure that the precise amount of adhesive is picked up on the side 62 of the roller 48, an adjustable doctor blade or scraper 64 is provided to doctor the surface of this side. The scraper 64 is L-shaped, and one portion thereof, 66, is arranged in contact with the side of the reservoir roller 43. Another portion, 68, is slidably positioned within a U-shaped bracket 70 which is atfixed to the laterally extending portion 46. A stud 72 is affixed to the end of the portion 68, and it extends through an upstanding bearing boss 74 affixed to the laterally extending portion 46. A set of adjusting washers 76 and 73 are threaded onto the stubs 72 on each side of the bearing boss 74. Adjustment of the position of the adjusting washers76 and 78 on the studs 74 may be made to effect proper positioning of the portion 66 of the scraper 64, in order to achieve the desired amount of doctoring of adhesive from the reservoir roller 48.

In accordance with the invention, a positioning bar 80 is affixed to the bearing portion 32 of the bracket casting 20. A segment bearing bracket generally designated 82 is suitably grooved on its back face to permit its positioning on the bar 80 adjacent the outer face of the bracket casting 20. The segment bearing bracket 82 includes a substantially vertical mounting portion 84 and a bearing hub portion 85, disposed at an angle thereto. A shaft 86 is rotatably mounted in the bearing hub portion and is provided with a bevel gear 88 at its upper end which meshes with a similar bevel gear 3 89 afiixed to the shaft 30. Rotation of the shaft 86 is effected by drive shaft 24 through

gears

26, 28, 89 and 88.

Atlixed to the opposite end of the shaft 86 is an angularly disposed adhesive applicator segment die generally designated 90. The segment bearing bracket 82 may be adjustably positioned on the bracket casting 20 to effect proper positioning of a beveled transfer surface 92-of the applicator die 96 in contact with the reservoir roller side 62 and in proper closely spaced relationship with a backing roller 94 arranged alongside the conveyor 12.

In order to effect fine adjustment of the location of the segment applicator die 90 both in respect to the work being advanced on the conveyor 12 and to the reservoir roller 48, the segment bearing bracket 32 is made adjustable in respect to the bracket casting 20. The bracket 82 is slidable on the bar 80 under the influence of a handle generally designated 96 which is pivoted at 9% on the bracket casting 20. An end tip 103 of the handle 96 is positioned Within a recess 102 of the segment bearing bracket 82. Movement of the handle 96 effects movement of the bearing bracket 82 on the bar 80. When the segment is properly positioned, the bracket is secured in position by a fastening handle 104 which has an end portion 106 which is threaded into the bracket casting 20. An adjustable screw positioning stop 108 is mounted on an angle bracket 110 on the bracket casting 2t), and it is provided to contact the bracket 82 in its correctly aligned position.

As each envelope blank 14 is advanced along on the conveyor 12, an edge is brought over the backing roller 94. The angularly disposed segment applicator die 90 is rotated into touching contact with the side 62 of the reservoir roller 48 to effect a transfer of adhesive to the die 90. (See FIG. 1). As the applicator die 90- is rotated past the reservoir roller 84, the next envelope blank 14 is advanced to a position with its forward lateral edge adjacent the backing roller 94. The length of the segment in this instance is such to apply a line of adhesive 10 9 along the edge of the blank 14 which does not extend to the forward and trailing edges. Adjustment may be made in the location of the transfer applicator segment die W in respect to the positioning against the reservoir roller 48 in order to effect the proper amount of contact and transfer of adhesive. Further adjustments in adhesive transfer are made by the adjustable scraper 64.

Thus, the invention provides an adhesive applicator which may be positioned alongside the work advancing area rather than over it, and arranged to operate without contaminating the work area with adhesive. The provision of an angularly disposed transfer and applicator die segment permits easy control of the extent and location of adhesive which is applied to advanced work pieces.

While a specific embodiment of the invention has been shown and described in detail to illustrate the application of the invention principles, it will be understood that the invention may be embodied otherwise without departing from such principles.

I claim:

1. An applicator for a viscous liquid, such as adhesive or the like, comprising a liquid reservoir, a reservoir roller having a side transfer face arranged to rotate in said reservoir with the lower portion thereof dipping into the liquid of said reservoir, a rotating applicator die member arranged with the axis of rotation disposed at an angle to the axis of rotation of said reservoir roller and having an adhesive transferring cont-act face arranged to rotate through an are substantially tangent to said reservoir side transfer face and extending laterally to one side of said reservoir, means to shift said applicator die roller to move said contact face toward and away from said reservoir roller side transfer face, and drive meansconnected to said reservoir roller and said ap- 4 plicator roller die member and efiective to drive said applicator roller die member in any one of its adjustable positions, said applicator die roller being shiftable a substantial amount without disengaging it from said drive means.

2. An envelope machine including conveyor means for advancing a series of envelope blanks in succession, and an adhesive applicator mechanismarranged alongside said conveyor mechanism including an adhesive reservoir, a reservoir roller arranged to rotate in said reservoir with a portion thereof dipping into the adhesive therein, a rotating applicator die member arranged with its axis of rotation disposed at an angle to said reservoir roller axis and having an adhesive transferring contact face arranged to rotate through an are substantially tangent to a side face of said reservoir roller and intercepting the path of movement of said envelope blanks whereby to transfer adhesive from said reservoir roller to said blanks, means to shift said applicator die to move said contact face toward and away from the side face of said reservoir roller, and the path of movement of said envelope blanks, and drive means connected to said reservoir roller and said applicator roller die member and effective to drive said applicator die in any of its adjustable positions.

3. An envelope machine including conveyor means for advancing a series of envelope blanks in succession, supporting bracket means extending across. said con veyor means, an adhesive applicator mechanism slidably mounted on said bracket means and including: a liquid reservoir, a reservoir roller arranged to rotate within said reservoir with a portion thereof dipping into the liquid therein, a rotating applicator die member arranged with its axis of rotation disposed at an angle to said reservoir roller and having an adhesive transferring contact face arranged to rotate through an arc substantially tangent to a side face of said reservoir roller and intercepting the path of movement of said envelope blanks whereby to transfer said adhesive from said reservoir roller to said blanks, means to shift said applicator die member to move said contact face toward and away from the path of movement of said envelope blanks, and drive means connected to said reservoir roller and said applicator roller die member and effective to drive said applicator die in any of adjustable positions.

4. An envelope machine according to claim 3, wherein said applicator die member is mounted on an applicator die shaft, and said drive means includes meshing bevel gear members which are relatively shift-able without going out of meshing engagement to permit adjustment of said applicator die.

5. An envelope machine according to claim 4, including a frame, a bearing bracket slidable on said frame and including a bearing portion supporting said applicator die roller shaft, and means to adjustably position said bearing bracket member on said frame member.

6. A liquid applicator comprising a liquid reservoir, a reservoir roller rotatably supported above said reservoir at a location to permit a portion thereof to dip into the liquid of said reservoir, an input shaft member rotatably supported above said reservoir, means to connect said input shaft member for continuous rotation, gear means connecting said input shaft member to said reservoir roller for rotation thereof, an applicator die shaft rotatably mounted at an angle to said input shaft member, gear means connecting said input shaft member and said applicator die shaft, an applicator die member on said applicator die shaft arranged to rotate through an are substantially tangent to a side face of said reservoir roller and extending laterally from said reservoir, and means to shift said applicator shaft and said applicator die member toward and away from the side face of I said reservoir roller while maintaining a portion of said gear members in operative engagement.

7. A liquid applicator according to claim 6, including an upstanding supporting frame connected to said reservoir, a bearing bracket member slidable on said supporting frame and including a bearing portion rotatably supporting said applicator die shaft, and means to adjustably position said bearing bracket member on said supporting frame.

8. A liquid applicator according to claim 5, including a doctor blade supporting bracket adjacent a side face of said reservoir roller, a doctor blade member including a doctor blade adjacent a side face of said reservoir roller for contacting said roller and a portion slidable on said doctor blade supporting bracket, and means to adjust the position of said doctor blade member whereby to adjust the clearance of the doctor blade portion in respect to the side face of said reservoir roller.

9. A liquid applicator according to claim 7, including means to secure said bearing bracket in its adjusted position.

10. A liquid applicator according to claim 6, wherein said adhesive applicator die member is a curved segment including a bevel face arranged in liquid transferring relationship with said reservoir roller.

11. A liquid applicator for a viscous liquid, such as adhesive or the like, comprising a liquid reservoir, a reservoir roller having a side transfer face arranged to rotate in said reservoir with the lower portion thereof dipping into the liquid of said reservoir, a rotating applicator die member arranged with the axis of rotation disposed at an angle to the axis of rotation of said reservoir roller and having an adhesive transferring contact face arranged to rotate through an are substantially tangent to said reservoir side transfer face and extending laterally to one side of said reservoir, means to shift said applicator die roller to move said contact face toward and away from said reservoir roller side transfer face, and drive means connected to said reservoir roller and said applicator roller die member and. effective to drive said applicator roller die member in any one of its adjustable positions, said applicator being mounted on an applicator die shaft, and including a frame member, and bearing bracket support means for said shaft slidable on said frame member to permit shifting of said applicator die roller while maintaining said drive means intact.

12. A liquid applicator according to claim 11, wherein said drive means includes mating bevel gear portions which may be shifted relatively without these portions going out of meshing engagement.

13. A liquid applicator for a viscous liquid, such as adhesive or the like, comprising a liquid reservoir, a reservoir roller having a side transfer face arranged to rotate in said reservoir with the lower portion thereof dipping into the liquid of said reservoir, a rotating applicator die member arranged with the axis of rotation disposed at an angle to the axis of rotation of said reservoir roller and having an adhesive transferring contact face arranged to rotate through an are substantially tangent to said reservoir side transfer face and extending laterally to one side of said reservoir, means to shift said applicator die roller to move said contact face toward and away from said reservoir roller side transfer face, and drive means connected to said reservoir roller and said applicator roller die member and effective to drive said applicator roller die member in any one of its adjustable positions,

said reservoir being provided with doctor blade means including a member movable toward and away from the side face of said reservoir roller.

14. A liquid applicator for a viscous liquid, such as adhesive or the like, comprising a liquid reservoir, a reservoir roller having a side transfer face arranged to rotate in said reservoir with the lower portion thereof dipping into the liquid of said reservoir, a rotating applicator die member arranged with the axis of rotation disposed at an angle to the axis of rotation of said reservoir roller and having an adhesive transferring contact face arranged to rotate through an arc substantially tangent to said reservoir side transfer face and extending laterally to one side of said reservoir, means to shift said applicator die roller to move said contact face toward and away from said reservoir roller side transfer face, and drive means connected to said reservoir roller and said applicator roller die member and effective to drive said applicator roller die member in any one of its adjustable positions, said reservoir including a doctor blade supporting bracket mounted in said reservoir, a doctor blade member including one portion extending substantially parallel to a side face of said reservoir roller and another portion extending substantially parallel to the axis of said roller, said latter portion being slidable on said doctor blade mounting bracket, and means to adjust the position of said doctor blade in relation to said side face of said reservoir roller by sliding said portion on said doctor blade mounting bracket.

References Cited in the file of this patent UNITED STATES PATENTS