US3539420A - Adhesive applying apparatus - Google Patents

Adhesive applying apparatus Download PDF

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Publication number
US3539420A
US3539420A US697866A US3539420DA US3539420A US 3539420 A US3539420 A US 3539420A US 697866 A US697866 A US 697866A US 3539420D A US3539420D A US 3539420DA US 3539420 A US3539420 A US 3539420A
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US
United States
Prior art keywords
adhesive
tips
cam
openings
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US697866A
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English (en)
Inventor
John E Ullman
Ernest J Rollings Jr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United States Steel Corp
Original Assignee
United States Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by United States Steel Corp filed Critical United States Steel Corp
Application granted granted Critical
Publication of US3539420A publication Critical patent/US3539420A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0204—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to the edges of essentially flat articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1798—Surface bonding means and/or assemblymeans with work feeding or handling means with liquid adhesive or adhesive activator applying means

Definitions

  • ABSTRACT F THE DISCLOSURE Apparatus for applying adhesive to the vertical joints of a workpiece having interlocking sheets in which a plurality of groups of four adhesive tips are pivotally mounted and fed from an upper retracted position inwardly to the four vertical joints of each intersection and then downwardly as adhesive is applied. The tips are retracted as they move upwardly so as to clear upper flanges at the intersection.
  • a new valve of the spool type is provided to supply adhesive rapidly to the adhesive tips and to prevent dripping of the adhesive from the tips when the valve is closed.
  • This invention relates to adhesive applying apparatus and more particularly to such apparatus for applying epoxy adhesives such as disclosed in Box Pats. Nos. 3,301,149 and 3,315,577.
  • the Box patents disclose a mat having interlocking flanged sheets which are closely spaced so that it is very ditlicult to apply adhesive to the four vertical joints at each intersection.
  • the adhesive is also diicult to handle since it does not ow readily and yet tends to drip after ilow is shut off. Prior to our invention no practical way had been found for commercially applying the adhesive to the mat.
  • Another object is to supply such apparatus including a valve that applies the adhesive rapidly and yet prevents dripping of the adhesive after flow is shut off.
  • FIG. l is a side elevation of the machine of our invention showing the parts prior to operation;
  • FIG. 2 is an end elevation of the machine of FIG. 1 looking from the right;
  • FIG. 3 is an enlarged view of a portion of FIG. 2 with the parts shown in operative position in solid lines and upper parts also shown in inoperative position in broken lines;
  • FIG. 4 is a plan view with parts shown in section
  • FIG. 5 is an enlarged detail view, partly in section
  • FIG. 6 is a view taken on the line VI-VI of FIG. 5;
  • FIG. 7 is a view taken on the line VII-VII of FIG. 6;
  • FIG. 8 is a schematic plan view of the workpiece with the adhesive tips in position to supply adhesive to the four vertical joints of each of two intersections..
  • reference numeral 2 indicates a workholder for the workpiece W which consists of interlocking ange sheets S such as shown in the above mentioned Box patents.
  • Two supporting posts 4 slidably support a beam 6.
  • a plurality of aligned valves 8 are mounted on each side of beam 6.
  • Each valve 8 includes a body 10 having an axial bore 12 in which are secured hollow sleeves 14 and 16 with a space 18 between their ends.
  • the internal diameter of sleeve 14 is smaller than the internal diameter of sleeve 16 with the portions of the inner diameters forming the ice bearing surface being cylindrical.
  • Sleeve 16 has a peripheral outer groove 20 and a peripheral inner groove 22 connected by openings 24.
  • An inlet 26 through valve body 10 is in alignment with the groove 20.
  • Adhesive epoxy is fed to inlet 26 through a conduit 27 under high pressure, such as 500 lbs. per sq. inch.
  • a spool 28 is slidably received in sleeve 14 and 16 and has spaced bearing portions 30, 32, 34 and 36.
  • the valve spools 28 are actuated by fluid motors 29R and 29L one at each end of each row of valves.
  • Bearing portion 30 slides within sleeve ⁇ 14 and bearing portions 32, 34 and 36 within sleeve 16.
  • An axial opening 38 closed at both ends is provided in spool 28 intermediate its ends and has generally radial openings 40 extending into the outer surface of spool 28 between portions 32 and 34 and similar openings 42 between portions 34 and 36.
  • Inner and outer packing rings 44 and 46 are provided as needed.
  • Valve body 10 has an opening 48 at one side which communicates with space 18, four openings 50 extending horizontally from opening 48, and a vertical opening 52 extending downwardly from the end of each opening 50 and terminating in an
  • valve body 10 Attached to the bottom of valve body 10 are two twopart ball retainers 56 each having four spherical openings 58 therein for receiving hollow balls 60.
  • Each ball 60 is connected to a tip 62 through fitting 64 and tube 66.
  • a cam follower 68 is secured to each tube 466 intermediate its ends and a grooved fitting 70 is secured to each tube 66 below follower 68.
  • Each tip 62 has two diverging generally horizontal discharge openings 72 in its end. It will be seen that each valve 8 controls two groups of four tips 62. Openings (not shown) through valve body 10 slidably receive cam rods 76 each having a cam 78 at its lower end.
  • Each cam 78 contacts the four cam followers 68 of each group with a spring 80 passing around the four grooved iittings 70 of each group to hold the followers in contact with the cam.
  • Two rocker shafts 82 are provided one on each side of beam 6 to actuate the rods 76 on the respective sides. Each rocker shaft 82 is actuated about its axis by a vertical arm 84 through arms 86 and 818.
  • each arm 90 Attached to the underside of ⁇ beam 6 at each end is a vertical arm 90.
  • the lower end of each arm 90 is pivotally connected to a lever 91 which is attached to a shaft 92 for rotation therewith.
  • the shaft 92 is mounted in bearings 93, and has a lever arm 94 attached thereto intermediate its ends.
  • a cam follower 95 is mounted on the end of arm 94.
  • a cam shaft 96 is mounted parallel to shaft 92 and is rotated through drive 97 from a motor 98. Cams mounted on shaft 96 move arms 84 up and down in timed relationship with the movement of arms 90 which are actuated by a cam 102 mounted on shaft 96 through arms 91 and 94 and shaft 92.
  • the workpiece W is positioned beneath the tips 62 in the desired position as shown in FIGS. l, 2, 3 and 8.
  • the beam 6 is in its upper position, the tips 62 are in their raised retracted position (FIG. 5), and the spools 28 in their extreme left hand position.
  • Operation of motor 98 then causes rotation of shaft 96 and associated cams so that arms 90 ⁇ cause beam 6 to lower until the tips 62 are in position to move in under the top flanges F of sheets S.
  • the rods 76 are then lowered by movement of arms 84 to move cams 78 out of contact with followers 68 so that the springs 80 will snap each group of four tips 62 inwardly to their position around the associated joints between sheets S.
  • the motors 29L will engage the spools 28 of the first valves on each side and move all spools to the right. In the extreme left position of the spools 28, openings 40 and 42 in the spool are blocked and no flow of adhesive through the spool can take place. At this time adhesive from previous operations will be in space 18, openings 48, S and 5,2, slots 54, balls 60, ttings 64, tubes 66 and tip openings 72. Since the adhesive is thixotropic it is very stiff at this time and diflicult to move.
  • the motor 29R will engage the spool 28 of the valve adjacent thereto and move all spools to the left so as to cut oft flow of adhesive.
  • rod 76 moves upwardly and forces the tips 62 outwardly so they can clear the upper flanges.
  • a vacuum is created because the piston action of portion 32 increases the volume of space 18 immediately after valve shut ot. This prevents continued ⁇ llovv of epoxy after the Valve is shut off. The operation will then be repeated, either on a new workpiece or where the spacing of joints is too close to cover all joints at once, the workpiece is moved to a new position and additional joints covered.
  • Apparatus for applying an adhesive to joints of a workpiece having interlocking sheets which comprises an adhesive tip for each joint to be supplied with adhesive, a valve for controlling flow of adhesive to said tip,
  • a conduit leading from said valve to said tip means for moving said tip generally transversely to said joint between positions adjacent to and remote from said joint, means for moving said tip along said joint, and means correlating the movements of the tip to move the tip inwardly at one end of the joint, along the joint to the other end and then outwardly.
  • Apparatus according to claim 1 including means for supporting the workpiece in a generally horizontal position with the joints generally vertical, four adhesive tips for applying adhesive to the four joints at an intersection of interlocking sheets, a vertically movable beam above said workpiece for supporting said valve, the conduit to each tip including a generally vertical tube pivoted at its upper end, the tip being connected to the lower end of said tube, a cam follower mounted on each tube intermediate its length, a vertically movable cam movable into and out of engagement with said cam followers, and resilient means urging said cam followers against said cam.
  • Apparatus according to claim 2 including means causing said cam to move out of engagement with said cam followers when said beam is at its upper position so as to permit said resilient means to move the tips into operative position at said vertical joints, means then causing said beam to first move downwardly with the tips in operative position to the bottom of the joints and then start upwardly, means for shutting oi'r" ow of adhesive after the tips start upwardly, and means for moving said cam into engagement with said cam followers to retract said tips after the tips start upwardly.

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  • Coating Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US697866A 1968-01-15 1968-01-15 Adhesive applying apparatus Expired - Lifetime US3539420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69786668A 1968-01-15 1968-01-15

Publications (1)

Publication Number Publication Date
US3539420A true US3539420A (en) 1970-11-10

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Application Number Title Priority Date Filing Date
US697866A Expired - Lifetime US3539420A (en) 1968-01-15 1968-01-15 Adhesive applying apparatus

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US (1) US3539420A (en))
BE (1) BE726943A (en))
DE (1) DE1901668A1 (en))
ES (1) ES362424A1 (en))
FR (1) FR2000251A1 (en))

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382530A (en) * 1965-04-29 1968-05-14 Dow Chemical Co Apparatus for the preparation of shaped articles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382530A (en) * 1965-04-29 1968-05-14 Dow Chemical Co Apparatus for the preparation of shaped articles

Also Published As

Publication number Publication date
DE1901668A1 (de) 1969-09-04
BE726943A (en)) 1969-07-15
FR2000251A1 (en)) 1969-09-05
ES362424A1 (es) 1970-12-01

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