US3886711A - Method for forming caulking tube cartridges - Google Patents

Method for forming caulking tube cartridges Download PDF

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Publication number
US3886711A
US3886711A US478443A US47844374A US3886711A US 3886711 A US3886711 A US 3886711A US 478443 A US478443 A US 478443A US 47844374 A US47844374 A US 47844374A US 3886711 A US3886711 A US 3886711A
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Prior art keywords
tube
cartridge
flange
caulking
anvil
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US478443A
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Don R Brothers
Edwin D Stewart
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Century Industries Corp
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Century Industries Corp
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Priority to US478443A priority Critical patent/US3886711A/en
Priority to US05/580,248 priority patent/US3953957A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • B29C57/12—Rim rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B29C65/568—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined using a swaging operation, i.e. totally deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/715—Caulking cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/002—Making boxes characterised by the shape of the blanks from which they are formed
    • B31B2105/0022—Making boxes from tubular webs or blanks, e.g. with separate bottoms, including tube or bottom forming operations

Definitions

  • the specification and claims disclose a method and apparatus for performing two manufacturing steps substantially simultaneously during the formation of a caulking tube cartridge.
  • the disclosed method includes the steps of providing a generally cylindrical anvil member adapted to be received in the piston end of the caulking tube; providing a flange ring member including a cylindrical open-ended section having a radially-extending flange; and, providing a protective cap adapted to snap on the nozzle end of the caulking tube.
  • the open-ended section of the flange ring is positioned in the piston end of the tube with the flange overlying the end of the tube.
  • the cap is axially aligned with the tube, and a force is applied to move the tube onto the anvil member. The force is sufficient to snap the cap onto the tube. Thereafter, the tube is rotated and the flange portion is deformed into a bead engaging the end of the tube.
  • the specifi cation also discloses apparatus specifically suited for carrying out the above sequence of steps.
  • a protective cap adapted to be snapped into position on the nozzle end of a caulking cartridge.
  • the cap is designed to seal the nozzle after the nozzle has been cut and a portion of the caulking compound used. In order to assure that the cap provides a good seal and is not easily dislodged during shipping or handling. it must have a relatively tight, snap-on fit with the tube.
  • the subject inventor has developed a method and apparatus by which a protective cap of the general type described can be readily applied or installed at substantially the same time as another step of the tube manufacturing sequence is carried out.
  • the tubes which constitute the body of the cartridge are generally formed of paperboard.
  • a flange ring is placed in the piston end of the tube.
  • the flange portion of the ring is then rolled over the end edge of the tube to form a protective and- /or reinforcing bead.
  • the subject invention provides a method and apparatus by which the two above-discussed manufacturing steps can be combined into what is, in effect, a single operation.
  • the method generally comprises the steps of:
  • a. providing a generally cylindrical, rotatable anvil member adapted to be closely received within the piston end of the caulking tube;
  • a flange ring member including a cylin drical, open-ended section having a flange extending radially outwardly from one end thereof;
  • the preferred form of apparatus for carrying out the method constitutes a second aspect of the invention and generally includes a cylindrical anvil member mounted for rotation about its axis. Spaced from the anvil and axially aligned therewith is a cooperating pis ton member having a recess which faces the anvil member and is adapted to receive the end of the protective cap. Actuating means are provided to drive the piston member toward the anvil under sufficient pressure to cause the anvil to enter the piston end of the cartridge and the cap to be snapped onto the nozzle end of the cartridge. Additionally, power means are provided to rotate the cartridge while it is thus held between the anvil member and the piston member. Also, rolling means are provided to roll the flange into a bead about the piston end of the cartridge during rotation of the cartridge.
  • a primary object of the invention is the provision of a method and apparatus which combines operations which were previously carried out in separate manufacturing operations.
  • a more specific object is the provision of an apparatus wherein the movement which positions the cartridge for the bead-rolling operation also applies the protective cap.
  • FIG. I is a longitudinal cross-sectional view through a caulking tube or cartridge of the type which can be manufactured or assembled through the use of the subject method and apparatus;
  • FIG. 2 is a schematic in pictorial form of an apparatus formed in accordance with a preferred embodiment of the invention.
  • FIGS. 3 and 4 show the sequence of operations for the apparatus of FIG. 2.
  • FIG. I shows the overall arrangement of a caulking tube or cartridge of the type which can be readily assembled through the use of the subject method and apparatus.
  • the caulking tube or cartridge assembly 10 comprises a main tubular body 12 generally formed from a relatively heavy paperboard tube.
  • a nozzle member 14 which is typically formed from plastic and carried on a disc-like metal end wall 16 which has its outer periphery I8 flanged over the upper end of the paperboard body I2.
  • a molded plastic cap 20 is releasably snapped to the upper end of the body and arranged to provide a seal for the nozzle 14.
  • the seal means comprise an internal cylindrical portion 22 which extends downwardly from the interior surface of the cap 24.
  • the cylindrical portion 22 is sized so as to tightly engage about the nozzle I4. Consequently, after the nozzle is open, replacement of the cap tightly seals the open end of the nozzle.
  • the cap is tightly but releasably retained on the tube by a snap flange assembly 26 which engages about the bead 18.
  • Flange 30 is a portion of a flange ring 32 which is slidably received within the piston member 34.
  • the piston member 34 is adapted to slide longitudinally in the tube under the influence of an associated caulking gun plunger or the like. Movement of the piston 34. of course, causes the caulking material within the body l2 to be expelled through the nozzle 14.
  • the flange member 32 has an original shape shown in FIG. 1 with dash-dot lines. It should be noted that the rolled-over flange portion 30 merely extends outwardly in a radial direction and joins to the cylindrical center portion of the flange ring 32.
  • the overall apparatus used comprises a first plunger member 38 which is suitably mounted for vertical reciprocation.
  • the particular manner in which the plunger member is driven is not important to the subject invention; however, manual actuation such as through a foot operator or the like could be used if desired.
  • the upper end of the plunger 38 includes a cup-shaped member 40 which is preferably mounted for free rotation relative to the plunger 38.
  • the cup-shaped member 40 has a central opening 42 which is sized so as to freely but closely receive the outer end of the protective cap 20.
  • anvil member 44 Axially spaced from the plunger 38 and axially aligned therewith is an anvil member 44.
  • the anvil member 44 is rotatably mounted and includes drive means 46 adapted to impart driving movement to rotate the anvil in the manner shown.
  • the lower end of anvil member 44 has a reduced diameter portion 48 which is sized so as to be closely received within the flange ring 32.
  • the length of the end portion 48 is preferably slightly less than the depth D from the base of the flange ring to the wall of the plunger 34.
  • the juncture between the reduced diameter end portion 48 and the main body of the anvil provides a shoulder which can bear against the end face or flange portion of the flange ring 32.
  • crimping rollers 50 Associated with the anvil 44 are one or more crimping rollers 50 which are carried by suitable actuating means 52.
  • the actuating means 52 are positioned to drive the crimping rollers toward the anvil roller.
  • the outer periphery 54 of the crimping rollers 52 include a bead-forming groove 55.
  • the grooves 55 are arranged to as to deform the radially-extending portion of the flange ring into the bead 30.
  • FIGS. 3 and 4 best illustrate the use of the apparatus of FIG. 2.
  • the operation begins with the plunger spaced apart from the anvil 44 in the manner shown.
  • a cap and cartridge body 10 are loosely assembled in the relationship shown and the cap received in the opening 42 of the upper end of the plunger.
  • the crimping rolls 50 are in a retracted position as shown
  • the plunger is actuated upwardly to the position shown in FIG. 4.
  • the upward actuation by the plunger causes the tube to be moved onto the anvil 44. That is, the reduced diameter end portion 48 of the anvil 44 enters within the flange ring 32.
  • the driven anvil 44 rotates the tube relative to the plunger 38.
  • the crimping rol lers 50 are driven inwardly to the position shown in FIG. 4.
  • the radially-extending flange of the flange ring 32 is caused to deflect over into a bead 30 which tightly grips the paperboard tube 12.
  • the movement which brings the tube assembly into proper position on the anvil also causes the cap to be snapped tightly into its position on the nozzle end of the tube.
  • the crimping rolls are retracted. Subsequent thereto, the plunger is reciprocated to a lower position and the assembled cartridge assembly 10 removed from the upper end of the plunger.
  • a flange ring member including a cylindrical open-ended section having a flange extending radially outwardly from one end thereof;

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Automatic Assembly (AREA)

Abstract

The specification and claims disclose a method and apparatus for performing two manufacturing steps substantially simultaneously during the formation of a caulking tube cartridge. In general, the disclosed method includes the steps of providing a generally cylindrical anvil member adapted to be received in the piston end of the caulking tube; providing a flange ring member including a cylindrical open-ended section having a radially-extending flange; and, providing a protective cap adapted to snap on the nozzle end of the caulking tube. The open-ended section of the flange ring is positioned in the piston end of the tube with the flange overlying the end of the tube. The cap is axially aligned with the tube, and a force is applied to move the tube onto the anvil member. The force is sufficient to snap the cap onto the tube. Thereafter, the tube is rotated and the flange portion is deformed into a bead engaging the end of the tube. The specification also discloses apparatus specifically suited for carrying out the above sequence of steps.

Description

United States Patent 1191 Brothers et a1.
[ METHOD FOR FORMING CAULKING TUBE CARTRIDGES [75] Inventors: Don R. Brothers, Canfield; Edwin D.
Stewart, Austintown, both of Ohio [73] Assignee: Century Industries Corporation,
New Waterford, Ohio [22] Filed: June 12, 1974 [21] Appl. No.1 478,443
[ June 3, 1975 Primary ExaminerC. W. Lanham Assistant ExaminerE. M. Combs Attorney, Agent, or Firm-Sidney W. Millard 1571 ABSTRACT The specification and claims disclose a method and apparatus for performing two manufacturing steps substantially simultaneously during the formation of a caulking tube cartridge. In general, the disclosed method includes the steps of providing a generally cylindrical anvil member adapted to be received in the piston end of the caulking tube; providing a flange ring member including a cylindrical open-ended section having a radially-extending flange; and, providing a protective cap adapted to snap on the nozzle end of the caulking tube. The open-ended section of the flange ring is positioned in the piston end of the tube with the flange overlying the end of the tube. The cap is axially aligned with the tube, and a force is applied to move the tube onto the anvil member. The force is sufficient to snap the cap onto the tube. Thereafter, the tube is rotated and the flange portion is deformed into a bead engaging the end of the tube. The specifi cation also discloses apparatus specifically suited for carrying out the above sequence of steps.
2 Claims, 4 Drawing Figures [52] US. Cl. 53/14; 53/128; 53/284 [51] Int. Cl B65b 7/28; 1365b 3/00 [58] Field of Search 53/14, 42, 128, 284, 334
[56] References Cited UNITED STATES PATENTS 1,152,598 9/1915 Butler 53/14 1,517,740 12/1924 Malmquist... 53/334 2,447,524 8/1948 Nordquistnm 53/334 2,916,861 12/1959 Lehmann t 53/42 3,000,163 9/1961 Bellamy 53/128 3,238,699 3/1966 Morton 53/284 3,295,672 1/1967 Lemelson 53/14 FOREIGN PATENTS OR APPLICATIONS 1,343,415 1/1963 France 53/14 44 55 fso PATENTEUJUAB ms SHEET METHOD FOR FORMING CAULKING TUBE CARTRIDGES BACKGROUND OF THE INVENTION The subject invention is directed toward the packaging art and. more particularly. to a method and apparatus for applying a protective cap on the nozzle end of a caulking tube while substantially simultaneously therewith rolling a bead on the piston end of the tube.
In commonly-assigned copending application Ser. No. 418,600, filed Nov. 23. 1973 for CAULK CAP, there is disclosed a protective cap adapted to be snapped into position on the nozzle end of a caulking cartridge. The cap is designed to seal the nozzle after the nozzle has been cut and a portion of the caulking compound used. In order to assure that the cap provides a good seal and is not easily dislodged during shipping or handling. it must have a relatively tight, snap-on fit with the tube.
The tight fit required of the cap presents some problems during manufacture. Although the caps are designed to be removed and applied manually, this is not economically practical during high volume manufacturing runs.
The subject inventor has developed a method and apparatus by which a protective cap of the general type described can be readily applied or installed at substantially the same time as another step of the tube manufacturing sequence is carried out. In particular, the tubes which constitute the body of the cartridge are generally formed of paperboard. Normally, during manufacture, a flange ring is placed in the piston end of the tube. The flange portion of the ring is then rolled over the end edge of the tube to form a protective and- /or reinforcing bead.
BRIEF DESCRIPTION OF THE INVENTION The subject invention provides a method and apparatus by which the two above-discussed manufacturing steps can be combined into what is, in effect, a single operation. In accordance with one aspect of the invention, the method generally comprises the steps of:
a. providing a generally cylindrical, rotatable anvil member adapted to be closely received within the piston end of the caulking tube;
b. providing a flange ring member including a cylin drical, open-ended section having a flange extending radially outwardly from one end thereof;
c. providing a protective cap adapted to snap on the nozzle end of the caulking tube;
d. positioning the cylindrical open-ended section of the flange ring member in the piston end of the tube with the flange overlying the end edge of the tube and axially aligning the cap with the tube;
e. axially aligning the piston end of the tube with the anvil and applying sufficient axial force to move the anvil into the piston end of the tube and cause the cap to snap onto the nozzle end; and,
f. rotating the tube and the anvil and deforming the flange into a bead about the piston end of the cartridge.
The preferred form of apparatus for carrying out the method constitutes a second aspect of the invention and generally includes a cylindrical anvil member mounted for rotation about its axis. Spaced from the anvil and axially aligned therewith is a cooperating pis ton member having a recess which faces the anvil member and is adapted to receive the end of the protective cap. Actuating means are provided to drive the piston member toward the anvil under sufficient pressure to cause the anvil to enter the piston end of the cartridge and the cap to be snapped onto the nozzle end of the cartridge. Additionally, power means are provided to rotate the cartridge while it is thus held between the anvil member and the piston member. Also, rolling means are provided to roll the flange into a bead about the piston end of the cartridge during rotation of the cartridge.
As is apparent from the foregoing, the operations of cap applying and bead rolling are effectively combined into a single operation or machine. This has the result of greatly simplifying the overall manufacturing of the cartridges.
Accordingly, a primary object of the invention is the provision of a method and apparatus which combines operations which were previously carried out in separate manufacturing operations.
A more specific object is the provision of an apparatus wherein the movement which positions the cartridge for the bead-rolling operation also applies the protective cap.
BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects and advantages will hecome apparent from the following description when read in conjunction with the accompanying drawings wherein:
FIG. I is a longitudinal cross-sectional view through a caulking tube or cartridge of the type which can be manufactured or assembled through the use of the subject method and apparatus;
FIG. 2 is a schematic in pictorial form of an apparatus formed in accordance with a preferred embodiment of the invention; and,
FIGS. 3 and 4 show the sequence of operations for the apparatus of FIG. 2.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring more particularly to the drawings wherein the showings are for the purpose of illustrating a pre ferred embodiment of the invention only, and not for the purpose of limiting same, FIG. I shows the overall arrangement of a caulking tube or cartridge of the type which can be readily assembled through the use of the subject method and apparatus. As can be seen, the caulking tube or cartridge assembly 10 comprises a main tubular body 12 generally formed from a relatively heavy paperboard tube. At the upper end of the body 12 is a nozzle member 14 which is typically formed from plastic and carried on a disc-like metal end wall 16 which has its outer periphery I8 flanged over the upper end of the paperboard body I2. In the tube or cartridge assembly 10, a molded plastic cap 20 is releasably snapped to the upper end of the body and arranged to provide a seal for the nozzle 14. This particular cap structure is shown and described more fully in US. Pat. application Ser. No. 4l8,600, filed Nov. 23, 1973. The seal means comprise an internal cylindrical portion 22 which extends downwardly from the interior surface of the cap 24. The cylindrical portion 22 is sized so as to tightly engage about the nozzle I4. Consequently, after the nozzle is open, replacement of the cap tightly seals the open end of the nozzle. The cap is tightly but releasably retained on the tube by a snap flange assembly 26 which engages about the bead 18.
During original assembly of the tube-cap combination, the caps must be snapped onto the tube. Although the snapping can be accomplished manually, in largescale production of the assembly this can constitute a substantial amount of work.
In accordance with the subject invention, the snapping of the cap onto the end of the tube is combined with an additional manufacturing step to reduce the overall problems involved. In particular, about the lower end of the tube body 12 there is a rolled flange 3|). Flange 30 is a portion of a flange ring 32 which is slidably received within the piston member 34. As is well known. the piston member 34 is adapted to slide longitudinally in the tube under the influence of an associated caulking gun plunger or the like. Movement of the piston 34. of course, causes the caulking material within the body l2 to be expelled through the nozzle 14. During the manufacture of the tube, the flange member 32 has an original shape shown in FIG. 1 with dash-dot lines. It should be noted that the rolled-over flange portion 30 merely extends outwardly in a radial direction and joins to the cylindrical center portion of the flange ring 32.
The overall sequence of operations used to assemble the cartridge assembly can best be understood by reference to FIGS. 2-4.
As shown in FIG. 2, the overall apparatus used comprises a first plunger member 38 which is suitably mounted for vertical reciprocation. The particular manner in which the plunger member is driven is not important to the subject invention; however, manual actuation such as through a foot operator or the like could be used if desired. The upper end of the plunger 38 includes a cup-shaped member 40 which is preferably mounted for free rotation relative to the plunger 38. The cup-shaped member 40 has a central opening 42 which is sized so as to freely but closely receive the outer end of the protective cap 20.
Axially spaced from the plunger 38 and axially aligned therewith is an anvil member 44. The anvil member 44 is rotatably mounted and includes drive means 46 adapted to impart driving movement to rotate the anvil in the manner shown. The lower end of anvil member 44 has a reduced diameter portion 48 which is sized so as to be closely received within the flange ring 32. The length of the end portion 48 is preferably slightly less than the depth D from the base of the flange ring to the wall of the plunger 34. As can be seen, the juncture between the reduced diameter end portion 48 and the main body of the anvil provides a shoulder which can bear against the end face or flange portion of the flange ring 32.
Associated with the anvil 44 are one or more crimping rollers 50 which are carried by suitable actuating means 52. The actuating means 52 are positioned to drive the crimping rollers toward the anvil roller. The outer periphery 54 of the crimping rollers 52 include a bead-forming groove 55. The grooves 55 are arranged to as to deform the radially-extending portion of the flange ring into the bead 30.
FIGS. 3 and 4 best illustrate the use of the apparatus of FIG. 2. In particular, as shown in FIG. 3, the operation begins with the plunger spaced apart from the anvil 44 in the manner shown. To begin, a cap and cartridge body 10 are loosely assembled in the relationship shown and the cap received in the opening 42 of the upper end of the plunger. At this time, the crimping rolls 50 are in a retracted position as shown With the cap and cartridge body loosely assembled and posi tioned on the upper end of the plunger, the plunger is actuated upwardly to the position shown in FIG. 4. The upward actuation by the plunger causes the tube to be moved onto the anvil 44. That is, the reduced diameter end portion 48 of the anvil 44 enters within the flange ring 32. At this time or subsequent thereto, the driven anvil 44 rotates the tube relative to the plunger 38. With the tube assembly 10 rotating, the crimping rol lers 50 are driven inwardly to the position shown in FIG. 4. During inward movement of the crimping rollers 50, the radially-extending flange of the flange ring 32 is caused to deflect over into a bead 30 which tightly grips the paperboard tube 12. As can be appreciated, the movement which brings the tube assembly into proper position on the anvil also causes the cap to be snapped tightly into its position on the nozzle end of the tube.
After bead 30 has been formed, the crimping rolls are retracted. Subsequent thereto, the plunger is reciprocated to a lower position and the assembled cartridge assembly 10 removed from the upper end of the plunger.
The invention has been described in great detail sufficient to enable one of ordinary skill in the packaging art to make and use the same. Obviously, modifications and alterations of the preferred embodiment will occur to others upon a reading and understanding of the specification and it is my intention to include all such modifications and alterations as part of my invention insofar as they come within the scope of the appended claims.
Having thus described my invention, I claim:
I. A method for forming a caulking cartridge of the type including a cylindrical body which holds the caulking material and having a nozzle end and a piston end, comprising the steps of:
a. providing a generally cylindrical rotatable anvil member adapted to be closely received within the piston end of the caulking cartridge;
b. providing a flange ring member including a cylindrical open-ended section having a flange extending radially outwardly from one end thereof;
c. providing a protective cap adapted to snap on the nozzle end of the caulking tube;
d. positioning the cylindrical open-ended section of the flange ring member in the piston end of the cartridge with the flange overlying the end edge of the body and axially aligning the cap with the cartridge; and,
e. axially aligning the piston end of the cartridge with the anvil and applying sufficient axial force to move the anvil into the piston end of the cartridge to cause the cap to snap onto the nozzle end of the body and rotating the body and the anvil relative to a deforming means and deforming the flange with said means into a bead about the piston end of the cartridge.
2. The method as claimed in claim 1 including the step of deforming the flange into a bead by moving rotatable roller members radially inward toward the

Claims (2)

1. A method for forming a caulking cartridge of the type including a cylindrical body which holds the caulking material and having a nozzle end and a piston end, comprising the steps of: a. providing a generally cylindrical rotatable anvil member adapted to be closely received within the piston end of the caulking cartridge; b. providing a flange ring member including a cylindrical open-ended section having a flange extending radially outwardly from one end thereof; c. providing a protective cap adapted to snap on the nozzle end of the caulking tube; d. positioning the cylindrical open-ended section of the flange ring member in the piston end of the cartridge with the flange overlying the end edge of the body and axially aligning the cap with the cartridge; and, e. axially aligning the piston end of the cartridge with the anvil and applying sufficient axial force to move the anvil into the piston end of the cartridge to cause the cap to snap onto the nozzle end of the body and rotating the body and the anvil relative to a deforming means and deforming the flange with said means into a bead about the piston end of the cartridge.
1. A method for forming a caulking cartridge of the type including a cylindrical body which holds the caulking material and having a nozzle end and a piston end, comprising the steps of: a. providing a generally cylindrical rotatable anvil member adapted to be closely received within the piston end of the caulking cartridge; b. providing a flange ring member including a cylindrical openended section having a flange extending radially outwardly from one end thereof; c. providing a protective cap adapted to snap on the nozzle end of the caulking tube; d. positioning the cylindrical open-ended section of the flange ring member in the piston end of the cartridge with the flange overlying the end edge of the body and axially aligning the cap with the cartridge; and, e. axially aligning the piston end of the cartridge with the anvil and applying sufficient axial force to move the anvil into the piston end of the cartridge to cause the cap to snap onto the nozzle end of the body and rotating the body and the anvil relative to a deforming means and deforming the flange with said means into a bead about the piston end of the cartridge.
US478443A 1974-06-12 1974-06-12 Method for forming caulking tube cartridges Expired - Lifetime US3886711A (en)

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US05/580,248 US3953957A (en) 1974-06-12 1975-05-23 Apparatus for forming caulking tube cartridges

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135347A (en) * 1976-10-15 1979-01-23 International Paper Co. Method and apparatus for producing a dispensing tube
US5533316A (en) * 1995-05-04 1996-07-09 Self Industries, Inc. Apparatus for compressing and positioning the sealing components of an open head drum
US6076712A (en) * 1998-10-22 2000-06-20 Esber; Alex S. Flexible caulk tube nozzle
US20050133547A1 (en) * 2003-12-23 2005-06-23 Swann Jeffrey J. Caulking tube replacement tip
EP2930115A1 (en) * 2014-04-11 2015-10-14 Lockheed Martin Corporation System, apparatus, and method of efficiently transferring material from a container to a cartridge

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1152598A (en) * 1913-04-14 1915-09-07 Us Cartridge Company Method of constructing packages.
US1517740A (en) * 1921-10-20 1924-12-02 Malmquist Machine Company Can-capping mechanism
US2447524A (en) * 1945-06-25 1948-08-24 American Can Co Can closing machine
US2916861A (en) * 1952-03-26 1959-12-15 Lehmann Harry Device and method for closing and sealing containers
US3000163A (en) * 1956-05-21 1961-09-19 Jr John B Bellamy Carton sealer rollers
US3238699A (en) * 1960-03-30 1966-03-08 Automotive Dev Inc Filter cartridges and machine for making the same
US3295672A (en) * 1964-10-14 1967-01-03 Jerome H Lemelson Packaging assemblies

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1152598A (en) * 1913-04-14 1915-09-07 Us Cartridge Company Method of constructing packages.
US1517740A (en) * 1921-10-20 1924-12-02 Malmquist Machine Company Can-capping mechanism
US2447524A (en) * 1945-06-25 1948-08-24 American Can Co Can closing machine
US2916861A (en) * 1952-03-26 1959-12-15 Lehmann Harry Device and method for closing and sealing containers
US3000163A (en) * 1956-05-21 1961-09-19 Jr John B Bellamy Carton sealer rollers
US3238699A (en) * 1960-03-30 1966-03-08 Automotive Dev Inc Filter cartridges and machine for making the same
US3295672A (en) * 1964-10-14 1967-01-03 Jerome H Lemelson Packaging assemblies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135347A (en) * 1976-10-15 1979-01-23 International Paper Co. Method and apparatus for producing a dispensing tube
US5533316A (en) * 1995-05-04 1996-07-09 Self Industries, Inc. Apparatus for compressing and positioning the sealing components of an open head drum
US6076712A (en) * 1998-10-22 2000-06-20 Esber; Alex S. Flexible caulk tube nozzle
US20050133547A1 (en) * 2003-12-23 2005-06-23 Swann Jeffrey J. Caulking tube replacement tip
US7014079B2 (en) 2003-12-23 2006-03-21 Jeffrey J. Swann Caulking tube replacement tip
EP2930115A1 (en) * 2014-04-11 2015-10-14 Lockheed Martin Corporation System, apparatus, and method of efficiently transferring material from a container to a cartridge
US10086959B2 (en) 2014-04-11 2018-10-02 Lockheed Martin Corporation System, apparatus, and method of efficiently transferring material from a container to a cartridge

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