US2264632A - Adhesive applying device - Google Patents

Description

Dec. 2, 1941. H. E. GERLITZKI ADHESIVE APPLYING DEVICE lllllm\\\\\\\\\\ Filed Feb. 14, 1939 III lll Patented Dec. 2, 1941 ADnEsIvE Arrmrmd DEVICE Harry E. Gerlitzki, Lancaster, Pa., assignor to Armstrong Cork CompannLancaster. Pa., a corporation oi.' Pennsyl Application February 14, 1939, serialA No. 256,284

6 Claims.

This invention relates to an adhesive applying device and more particularly to a device for applying adhesive to the inside ofclosurebodies for the securement of sealing liners thereto.

It is an object of my invention to provide a simple device by which adhesives of varying. degrees of iiowability may be applied to the head portions of closures and maybe disposed uniformly and in predetermined quantity therein to effect adhesive securement ofv a sealing liner disposed -in engagement therewith throughout substantially the'entire extent of the surfaces in engagement with the adhesive.

Common practice heretofore has been to apply a single drop of adhesive to the central portion of the head of the closure body and rely upon the application of pressure to the liner to spread the adhesive over the contacting surfaces. This has been found generally unsatisfactory, particularly with the lessuid adhesives.

In order that my invention will be readily understood, I will describe the same in conjunction with the attached' drawing in which Figure 1 is a side elevation, partially broken away, illustrating the device of my invention attached to the reciprocating arm of a closure lining machine;

Figure 2 is a similar View showing particularly a valve mechanism ifor the adhesivesupply line in closed position;v A A Figure. ,3 is a partial sectional view showing the valve mechanism in open position:

Figure i is a bottom plan view of a preferred formV of distribution head; and

Figure 5 is a sectional view of a further modication.

vReferring to Figure l, there is shown a support 2 which carries a molded closure 3 to which adhesive is to be applied to the surface 4 of the head portion thereof by the adhesive applying device generally indicated by the numeral 5. The applicator E is carried by an arm 6 adapted for reciprocatory motion in a vertical plane to bring the applicator 5 into engagement with the surface 4 of the closure 3 to deposit adhesive thereon and to withdraw the applicator E from the closure to permit movement of the closure since any mechanism suitable for imparting such motion to the arm 6 will be satisfactory.

'Ihe adhesive is carried in a reservoir 1 and is placed under pressure by means of air introduced from a suitable source through a exible hose 8. A conduit 9 communicates with the bottom of the reservoir 1 and with a central feeder I0 (Figure 2) provided in a valve body II. The valve body II is movable axially within an axial bore I2 provided in the body I3 of the applicator 5. Passageways I4 extend radially from the central feeder Ill to the outer periphery of the valve body I I and are closed by the surface of the axial bore I2. The passageways Il are normally held in closed position byl retraction to a position within the bore I2 by a spring l5 which encircles the valve b ody II and is disposed V between an upper surface IB of the body I3 anda radial projection l1 on the valve body II. The projection I1, in the embodiment shown in Figure 2, is formed as a nut to facilitate assembly of the applicator 5 to the conduit 9, the terminal end of the valve body Il being provided with screw threads I8 engageable with complementary threads I8' (shown in dotted lines in Figure 1) formed in the central bore of the conduit 9. Movement of the valve body I I with 'respect to the body I3 is limited by a valve plate I9 attached to the end of the valve body II by ascrew 2l. The valve plate I9 serves as a supplementary seal. acting against the surface of the body I3 surrounding the'central bore I2, aiding in the sealing of the passageways I4.

` A chamber 2| for the reception of adhesive is provided in the body I3 below the plate 20 and the bottom of this chamber is closed by a distributing head 22 formed with ports 23 communieating with the chamber 2l and extending to the outer face of the distributing head 22. As shown in Figure 4, the ports 23 are radially and circumferentially spaced and are connected by circumferentially and radially disposed grooves 24, which intersect to facilitate yproper distribution.

In the operation of my device, a closure 3 positioned on the support 2 is brought into the. adhesive applying station and the arin 8 is reciprocated in a vertically downward direction, bringing -the distributing head 22 into engagement with the surface 8 of the head of the closure 3.

As downward. motion continues, the applicator n body I3 is displaced with respect to the valve body I I as shown in Figure 3, compressing spring I5, and adhesive under air, pressure flows from the reservoir 'I, through the conduit S, the central feeder I0, and the passageways I8 into the A chamber 2| and thence through the ports 23 to the grooves 26 into engagement with the surface 4. After completion of the downward movement,

the arm 6 is elevated and the spring l5 causes the applicator body i3 to move with respect to the valve body ii bringing the paasageways I4 within the bore i2 and the plate it into engagement with the applicator body It surrounding the bore I2, `thus sealing the communication line from the reservoir l to the chamber 2i. The

closure 3 is then moved from the adhesive applying station and a new closure is presented thereto.

Inorder to facilitate the application of adhesive to closures of various sizes, the conduitd is screw threaded in an area 25 and is provided with clamp nuts 2t and 2l to permit vertical adjustment of the applicator with respect to thel arm t to insure proper engagement of the dis'- tributinghead 22 with the surface d of the clov sure 3 upon downward movement of the arm 6.

The applicator assembly t is, as previously pointed out, screw threaded to the conduit 9 so that the same may be conveniently removed and replaced by a device having the proper diameter for the closures being operated upon. Additionally, the distribution head 22 is attached to the body I 3 by screw threads 2B so thatit may be conveniently changed.

In Figure 5, there is shown a modified construction in which a'tapered valve 29 is provided for controlling the iiow of adhesive from the reser f voir l? to the distributing chamber Ziin place of the valve arrangement of Figure 2.` The applicator of Figure operates in the same manner as the applicator shown in Figures 1, 2, 3 and 4 and corresponding numbers have been applied to corresponding parts. -It will be noted, however, that the distributing head 22 is of different contour than .the head of Figure 2,v illustrating the interchangeability of the distributing head to operate upon closures of varying diameter. l

While I have illustrated and described certain preferred embodiments of my invention, it will be understood that the invention is not so lima,ae4,esa

surface to betreated, said body being provided 'with a central axial bore opening into said distributing chamber, a valve slidable axially within said bore, said valve being Aprovided with a central axial feeder and radially disposed passageways extending therefrom to the surface of the valve, a valve plate-movable with said valve lying within said distributing chamber and of an area sufflcient to overlie the line of engagement between the valve and body at the surface of said chamber, a radial projection on said valve, a spring encircling said valve and disposed between a surface of said body and saidy projection and normally holding 'said valve in closed position with said passageways disposed within the bore of said body and said valve platein engagement with the body surrounding said line of engagement, a source of adhesive liquid under pressure,

A a conduit leading from said source to saidaxial ,feeder in said valve, a closure support, means reciprocable toward and away from said support,

said valve being xed with respect to and movable with said reciprocable support, said valve and body being displaceable'with respect to each other upon engagement with said body with a surfaceto be treated, such displacement being eiective vfor moving said valve plate away from the said line of engagement and said passageways to a position within saidv distributing chamber to permit the delivery of .adhesive liquid under pressure from said source into said` distributing chamber and through said ports to said 'grooves for application to the surface to be treated.

3. An adhesive applying device in accordance with claim 2 in which the distributing head is rel movably secured to the body.

4. An adhesive applying device comprising a vsource of adhesive liquid under pressure, an applicator body provided with an adhesive receiving chamber therein, a distributing head assoited but may be otherwise embodied within the scope ofthe following claims:

I claim:

l. An adhesive applying device comprising a body with a chamber having a plurality of parts extending therefrom to an exposed surface to direct adhesive to the surface to be treated, said body being provided with a central axial bore, a

valve axially movable in said bore upon relative movement of said body with respect thereto, said valve having a Acentral axial feeder therein with a radially disposed passageway in communication therewith extending to the face thereof, yielding means disposed to normally hold said valve within said bore with said radially disposed passageway extending to the suri'aceV of said bore, and a source of adhesive under presmovement of said body with respect to said valve being effective to bring lsaid passageway to a position within said chamber to permit the passage of adhesive from said source,through said feeder. and said passageway to said chamber and through 'said ports tothe surface to be treated;

' 2, An adhesive applying device comprising'a body portion with a distributing chamber therein,*a distributing head having a plurality of ports therein icommunicating with said chamber and extending to an exposed surface of said distributing head in radially and circumferentially spaced l relationship, said ports being connected. by circumferential and radially disposedgrooves .formed in the surface of said distributing head and serving to direct ladhesive uniformly Vto the ciated with the applicator body and having a plurality of ports communicating with said chamber and extendingl to an exposed surface of said head to direct adhesive from the chamber Y' be treatedl and valve carrying reciprocating sure communicating with said feeder, relative means for imparting movement to said body and valve to bring said body into engagement with y said surface to be treated and to effect relative movement between said valve and body,'opening said valve for the discharge of fluid from said source, throughV saidl feeder and passageway to said chamber vand through said ports to the surfacetobe treated.' I'

5. An adhesive applying device comprising a A with a chamber having a plurality of ports lextending therefrom to an exposed surface to direct adhesive to the surface to be treated, said body being provided with an axial bore having a tapered valve sealing surface a valve having -a complementary tapered surface axially' movablein said bore upon relative movement of said body with respect thereto, said valve having an axial feeder therein with a radially disposed passageway in communieaticn therewith extending to the face thereof, and yielding means disposed to normally hold said valve in closed position with said radially disposed passageway within said bore, relative movement of said body with respect to said valve being effective to bring said passageway to a position within said chamber to permit the passage of Aadhesive through said feeder and said passageway to said chamber.and through said ports to the surface to be treated.

6. An adhesive applying device comprising an applicator body provided with an adhesive receiving chamber therein, a distributing head associated with the applicator body and having a plurality of ports communicating with said chamber and extending to an exposed surface lll of said head to direct adhesive from the chamber to the surface to be treated, said body being provided with a bore extending axially thereof, a valve axially movable in said bore upon relative movement of said body with respect thereto, said valve having a feeder therein with a radially disposed passageway extending to the surface of said bore, and yielding means disposed to n ormally hold said valve in closed position with said radially disposed passageway within said bore, relative movement of said body withl respect to said valve being effective to bring said passageway to a position within said chamber to permit the passage of adhesive through said feeder and said passageway to said chamber and through said ports to the surface to be treated.

HARRY E. GERLITZKI.

l CERTIFICATE or CORRECTION. Patent No. 2,26LL,652. December 2, 19m;A

HARRY E. GERLITzxI vIt i hereby certified that error appears in the printed specif'icti'n of the above numbered patent reqiring crrection as fo11ows:Page' 2, first column, line h6, -claim l, for parts read --ports; and that the said Lette-rs Patent should beread with-'this correction therei. that the same may ccnfo-rm to the record f the case in the Patent Office.

signed and sealed this 10thA day of nar-ch, A. D. 191m.

A Henry Van Arsdele,

(Seal) Acting Commissioner of Patents.

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