US3773597A - Heating apparatus - Google Patents
Heating apparatus Download PDFInfo
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- US3773597A US3773597A US3773597DA US3773597A US 3773597 A US3773597 A US 3773597A US 3773597D A US3773597D A US 3773597DA US 3773597 A US3773597 A US 3773597A
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- head
- substrate
- patch
- heating element
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
- A41H37/00—Machines, appliances or methods for setting fastener-elements on garments
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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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
- B29C65/1432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the surfaces to be joined
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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
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
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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
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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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
- 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
- B29C66/812—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8126—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 composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/81262—Electrical and dielectric properties, e.g. electrical conductivity
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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
- 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
- B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
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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
- 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
- B29C66/818—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
- B29C66/8187—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 cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
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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
- 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
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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
- 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
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
- B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
- B29C66/91643—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
- B29C66/91645—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile by steps
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
- B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
- B29C66/91653—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the voltage, i.e. the electric potential difference or electric tension
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
- B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
- B29C66/91655—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the current intensity
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
- B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
Definitions
- ABSTRACT A heating apparatus for simultaneously heating a substrate and the under surface of a path to be applied to the substrate in conjunction with means for applying the patch under pressure to a substrate.
- the present invention relates to improvements in patch applicator apparatus of the type which apply sections of hook or loop fastener tape to a web or substrate.
- An example of such an apparatus may be found in co-pending Ser. No. 134,816, filed Apr. 16, 1971, by the assignee of this application, which is incorporated by reference herein.
- Such apparatus obviates the necessity of attaching tape sections by sewing or other mechanical fastening means and instead quickly bonds a tape section to a substrate by heat and pressure.
- the substrate is relatively permeable to heat transmission
- this method is inefficient or unworkable for certain substrate materials, for example where such materials are impermeable to the transmission of heat or where the thickness of the substrate makes such transmission inefficient and slow.
- the present invention provides an improved heating means for use in conjunction with a patch applicator of the above type which works equally well with heat permeable or impermeable substrates.
- a heating element in combination with a patch applicator, a heating element and means for interposing such element between the patch applying head and the substrate to which the patch is to be applied.
- the heating element in this position will rapidly condition a suitable thermally-responsive coating upon the under surface of the patch and the upper surface of the substrate for adhesive pressure bonding of the patch to the substrate.
- Means are further provided for withdrawing the heating element immediately prior to application of the patch under pressure to the substrate.
- One aspect of the invention involves the use ofa head which holds the patch against its under surface by means of vacuum pressure.
- the heating element is constructed to provide a maximum radiant heating area and a minimum interruption of heating area to inhibit the flow of air to the patch holding head, thereby to minimize cooling of the adhesive.
- a patch applicator apparatus 10 has a vertical frame 10a and a base 10b.
- a substrate 12 is arranged upon the base 10b for the application thereto of a patch 13 applied under pressure by an applicator head 14 which holds the patch prior to and during application.
- the patch 13 is a section of hook or loop fastener tape and the substrate 12 is relatively thick heat impermeable material.
- the undersurface of patch 13 is coated with a suitable adhesive which is subjected to heat by the apparatus of the invention prior to the application of the patch to the substrate.
- the head 14 is hollow and defines in its lower surface 14a a series of apertures 14b.
- a vacuum is created within the head 14 by a means (not shown) such that a suction force will be applied to the upper surface of the patch 13 to hold it in place against the lower surface 14a of the head.
- Head 14 is moved between upper and lower positions by operation of cylinder 16 attached to frame 10a whose actuating rod 17 is connected to the head 14 as shown.
- Guides 18a and 18b are movable within fixed cross supports 19 to assure the controlled vertical movement of head 14.
- the guide 18b has an end which when contacted by arms 20, 21 limits the position of head 14 in the upper and lower positions.
- a multi-cam programmer (not shown) controls the operation of cylinder 16 to raise and lower head 14 in conjunction with other sequential operations of the apparatus 10. Such sequential operations and the movement of the head 14 form no part of the present invention except as movements of head 14 interrelate with the patch heating apparatus of the invention.
- the head 14 mounts a yoke consisting of arms 26, 27 pivotly connected to the head by a pin 28.
- a cylinder mounting plate 29 Secured at one side of the head 14 is a cylinder mounting plate 29 which is intermediate the arm 26 and the head 14.
- a spacer 30 separates the mounting plate 29 from the head 14.
- a retaining collar fits over the pin 28 outside of arm 26 to secure together the assembly of yoke arms 26, 27 and head 14.
- Arm 26 has at its upper end an actuating pin 31 which is received within clevis 32 attached to the actuating rod 33 of cylinder 34.
- At its upper end cylinder 34 is pivotally mounted within a bracket 36 by means of pin 37, the bracket 36 being attached to the plate 29.
- the lower ends of arms 26 and 27 are secured to a heater plate 40 (see FIG. 3) which mounts a heater element 41.
- the heater element is sinusoidal having ends 42 which have been sprayed with copper to decrease electrical resistance and which are thereafter coated with aluminum oxide for insulating purposes. It will be noted that parallel sections 41a of the heater element are closely spaced and are separated by very narrow gaps 43 so as to providemaximum radiant heating area and minimum space for the passage of air between respective sections 41a.
- the heater element 41 is secured to plate 40 along two sides by bars 44 and 45. Terminals 46 and 47 provide current through leads 48, 49 to the heater element.
- a flexible cable 50 is held within tubular bracket 51 to the plate 40 and encloses the leads 48, 49.
- a horizontal actuating arm 53 Secured to both the mounting plate 29 and guide member 18a, is a horizontal actuating arm 53 which receives an adjustable screw 54.
- an adjustable screw 54 As seen in FIG. 2, when the screw 54 is carried by movement of head 14 and plate 29 from the upper dotted line position to the position of FIG. 2, the lower end 54a of screw 54 will come into contact with a horizontally slidable stop member 56.
- the stop member 56 is laterally movable within a groove 55a of block 55 which is attached to plate 52.
- the plate 52 is mounted upon vertical frame a.
- the stop member 56 has connected to it a pin 57 which rides in a slot 58 in the plate 59 which is movable in a vertical direction by cylinder 60. Slots 59a and pins 65 guide vertical movement of plate 59.
- actuation of cylinder 60 is under the control of the aforementioned multi-cam programmer whose sequential operation is such that plate 59 moves downwardly to extend stop member 56 sufficiently to arrest the downward movement of head 14 by virtue of its interconnection with actuating plate 29 and screw 54.
- the applicator apparatus 10 includes some means for placing the patch 13 in proximity to the lower surface of head 14 so that the patch can be held by vacuum pressure thereupon. This means forms no part of the present invention and has not been disclosed. It will be sufficient to say that the patch 13 will be initially held by the head 14 when the head is in its upper most position, indicated partially in FIG. 2 by the dotted line position of members 53,54, and 29 which move vertically with the head.
- the plate 40 carrying heater element 41 will be moved from its dotted line position of FIG. 1 into the solid line position of FIGS. 1 and 2, preferably immediately after a patch 13 has been received by head 14. Such movement will take place by actuation of cylinder 34 causing clevis 32 to move upwardly and thus effecting rotation of arms 26 and 27 about pin 28. Again, movement of plate 40 into its lower horizontal position is preferably initiated by the multi-cam programmer which controls actuation of cylinder 34.
- the control circuit 60 includes a transformer 61 whose secondary has output voltages of 0, 9 volts, 18 volts and 27 volts.
- the primary is connected through leads 63 and 64 to a time delay relay 66 having alternate contact positions with leads 63 and 64.
- Power to relay 66 is 117 volts A.C. as shown through leads 67 and 68.
- Relay 66 is so constructed as to permit current to flow initially for say 0.5 second to the primary of transformer 61 through leads 68, 69 and 67, 64.
- Relay 66 may be for example of the type manufactured by the Potter and Brumfield Division of AMF Incorporated, model CLB-51-700l0.
- the reason for the operation of the relay 66 is to provide an initial quick heating of element 41 followed by sustained heating for a longer period.
- cylinder 34 will be actuated to extend clevis 32 and to rotate arms 26, 27 so that plate 40 assumes its vertical dotted line position.
- the cylinder 60 will be actuated to urge plate 59 downwardly, causing lateral withdrawal of stop member 56 through the agency of pin 57 in slot 58. This permits the head 14 to continue its interrupted descent and to apply the patch 13 under pressure to the substrate.
- the foregoing thus describes a useful addition to patch applicator machines wherein heat is used to prepare adhesive bonding of a patch to a substrate.
- the heater element 41 is designed particularly adapted to be used with applicator heads which hold a patch in place under vacuum since the interstices between sections 41a of the element are quite narrow and thus do not permit the passage of substantial amounts of cooling air in the direction of the head 14.
- a patch such as a section of hook and loop-type fastener tape and the like to a substrate said patch having an upper surface and a lower surface coated with an adhesive requiring the application of heat thereto prior to applying said patch to the substrate
- said apparatus including a head for gripping the patch along the upper surface thereof, means for moving said head between a first position where said head receives the patch and the undersurface thereof is exposed and a second position where said head applies pressure against the patch to apply same to the substrate, the improvement comprising a heating element, a yoke mounting said heating element, means for pivotally connecting said yoke to said head, means connected to said head moving means for selectively rotating said yoke to selectively interpose said heater element between said head and said substrate and for withdrawing said heating element to a position adjacent to said head, means for selectively arresting movement of said head toward the substrate when the heating element is positioned between said head and said substrate to permit the heating element simultaneously to apply heat to said patch and said substrate, and for selectively withdrawing
- the apparatus of claim 1 which includes a reciprocable plate, means for moving said plate, a mounting block defining a slot for receiving a stop member slidably movable toward and away from the head moving means, said plate defining a slot angularly disposed with respect to said stop member, a pin attached to said member received within the slot in said plate whereby reciprocable movements of said plate cause sliding movement of said stop member, and means connected to said head moving means for contacting said stop member when said member is extended toward the head moving means, to arrest movement of said head toward the substrate and to permit the heating element simultaneously to apply heat to said patch and substrate.
- said head includes vacuum pressure means for holding the patch, and said heating element is a flat generally sinusoidal combination of sections arranged closely together to prohibit substantial passage of air therebetween toward said head.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Fluid Mechanics (AREA)
- Textile Engineering (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
- Press Drives And Press Lines (AREA)
- Magnetic Heads (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Labeling Devices (AREA)
Abstract
A heating apparatus for simultaneously heating a substrate and the under surface of a path to be applied to the substrate in conjunction with means for applying the patch under pressure to a substrate.
Description
United States Patent Captain et al.
HEATING APPARATUS Inventors: Khushroo M. Captain, Cambridge,
Mass; John H. Edwards, Warwick, R.I.; David B. Russell, Ashland, Mass.
American Velcro, Inc., New York, NY.
Filed: Aug. 10, 1971 Appl. No.: 170,611
Assignee:
US. Cl 56/499, 156/285, 156/322, 219/345 Int. Cl. .l B296: 19/02 Field of Search 156/285, 322, 499; 219/345 References Cited UNITED STATES PATENTS 5/1966 Huddleston 156/499 Nov. 20, 1973 FOREIGN PATENTS OR APPLICATIONS 2,012,716 10/1970 Germany 156/499 Primary raminerllarold Ansher Assistant Examiner-M. E. McCamish Attorney-Dean S. Edmonds et a1.
[5 7 ABSTRACT A heating apparatus for simultaneously heating a substrate and the under surface of a path to be applied to the substrate in conjunction with means for applying the patch under pressure to a substrate.
4 Claims, 5 Drawing Figures rump Patented Nov. 20, 1973 3,773,597
IHH
2 Sheets-Sheet 1 FIG. 2
Patented Nov. 20, 1973 3,773,597
2 Sheets-Sheet 2 HEATING APPARATUS BACKGROUND OF THE INVENTION The present invention relates to improvements in patch applicator apparatus of the type which apply sections of hook or loop fastener tape to a web or substrate. An example of such an apparatus may be found in co-pending Ser. No. 134,816, filed Apr. 16, 1971, by the assignee of this application, which is incorporated by reference herein. Such apparatus obviates the necessity of attaching tape sections by sewing or other mechanical fastening means and instead quickly bonds a tape section to a substrate by heat and pressure. Where the substrate is relatively permeable to heat transmission, it is possible to provide a source of heat beneath the substrate which will penetrate through to the adhesive coating upon the under surface of the tape when the tape has been pressed ionto the substrate. However, it has been found that this method is inefficient or unworkable for certain substrate materials, for example where such materials are impermeable to the transmission of heat or where the thickness of the substrate makes such transmission inefficient and slow.
The present invention provides an improved heating means for use in conjunction with a patch applicator of the above type which works equally well with heat permeable or impermeable substrates.
SUMMARY OF THE INVENTION In accordance with the present invention, there is provided in combination with a patch applicator, a heating element and means for interposing such element between the patch applying head and the substrate to which the patch is to be applied. The heating element in this position will rapidly condition a suitable thermally-responsive coating upon the under surface of the patch and the upper surface of the substrate for adhesive pressure bonding of the patch to the substrate. Means are further provided for withdrawing the heating element immediately prior to application of the patch under pressure to the substrate. One aspect of the invention involves the use ofa head which holds the patch against its under surface by means of vacuum pressure. In accordance with such concept, the heating element is constructed to provide a maximum radiant heating area and a minimum interruption of heating area to inhibit the flow of air to the patch holding head, thereby to minimize cooling of the adhesive.
These and other aspects of the invention will be described in connection with the following detailed specification and the accompanying drawing.
BRIEF DESCRIPTION OF THE DRAWING DESCRIPTION OF A PREFERRED EMBODIMENT Referring now to the drawing and initially to FIGS. 1 and 2 thereof, there has been illustrated a patch applicator apparatus 10. The apparatus has a vertical frame 10a and a base 10b. A substrate 12 is arranged upon the base 10b for the application thereto of a patch 13 applied under pressure by an applicator head 14 which holds the patch prior to and during application. In the particular embodiment, the patch 13 is a section of hook or loop fastener tape and the substrate 12 is relatively thick heat impermeable material. The undersurface of patch 13 is coated with a suitable adhesive which is subjected to heat by the apparatus of the invention prior to the application of the patch to the substrate. The head 14 is hollow and defines in its lower surface 14a a series of apertures 14b. A vacuum is created within the head 14 by a means (not shown) such that a suction force will be applied to the upper surface of the patch 13 to hold it in place against the lower surface 14a of the head.
As shown in FIGS. l-3 the head 14 mounts a yoke consisting of arms 26, 27 pivotly connected to the head by a pin 28. Secured at one side of the head 14 is a cylinder mounting plate 29 which is intermediate the arm 26 and the head 14. A spacer 30 separates the mounting plate 29 from the head 14. A retaining collar fits over the pin 28 outside of arm 26 to secure together the assembly of yoke arms 26, 27 and head 14. Arm 26 has at its upper end an actuating pin 31 which is received within clevis 32 attached to the actuating rod 33 of cylinder 34. At its upper end cylinder 34 is pivotally mounted within a bracket 36 by means of pin 37, the bracket 36 being attached to the plate 29.
The lower ends of arms 26 and 27 are secured to a heater plate 40 (see FIG. 3) which mounts a heater element 41. The heater element is sinusoidal having ends 42 which have been sprayed with copper to decrease electrical resistance and which are thereafter coated with aluminum oxide for insulating purposes. It will be noted that parallel sections 41a of the heater element are closely spaced and are separated by very narrow gaps 43 so as to providemaximum radiant heating area and minimum space for the passage of air between respective sections 41a. The heater element 41 is secured to plate 40 along two sides by bars 44 and 45. Terminals 46 and 47 provide current through leads 48, 49 to the heater element. A flexible cable 50 is held within tubular bracket 51 to the plate 40 and encloses the leads 48, 49.
Secured to both the mounting plate 29 and guide member 18a, is a horizontal actuating arm 53 which receives an adjustable screw 54. As seen in FIG. 2, when the screw 54 is carried by movement of head 14 and plate 29 from the upper dotted line position to the position of FIG. 2, the lower end 54a of screw 54 will come into contact with a horizontally slidable stop member 56. The stop member 56 is laterally movable within a groove 55a of block 55 which is attached to plate 52. The plate 52 is mounted upon vertical frame a. The stop member 56 has connected to it a pin 57 which rides in a slot 58 in the plate 59 which is movable in a vertical direction by cylinder 60. Slots 59a and pins 65 guide vertical movement of plate 59. The actuation of cylinder 60 is under the control of the aforementioned multi-cam programmer whose sequential operation is such that plate 59 moves downwardly to extend stop member 56 sufficiently to arrest the downward movement of head 14 by virtue of its interconnection with actuating plate 29 and screw 54.
It will be understood that the applicator apparatus 10 includes some means for placing the patch 13 in proximity to the lower surface of head 14 so that the patch can be held by vacuum pressure thereupon. This means forms no part of the present invention and has not been disclosed. It will be sufficient to say that the patch 13 will be initially held by the head 14 when the head is in its upper most position, indicated partially in FIG. 2 by the dotted line position of members 53,54, and 29 which move vertically with the head.
Furthermore, the plate 40 carrying heater element 41 will be moved from its dotted line position of FIG. 1 into the solid line position of FIGS. 1 and 2, preferably immediately after a patch 13 has been received by head 14. Such movement will take place by actuation of cylinder 34 causing clevis 32 to move upwardly and thus effecting rotation of arms 26 and 27 about pin 28. Again, movement of plate 40 into its lower horizontal position is preferably initiated by the multi-cam programmer which controls actuation of cylinder 34.
As soon as the plate 40 has assumed its horizontal position, the programmer will actuate the heater element control circuit 60 shown in FIG. 5. The control circuit 60 includes a transformer 61 whose secondary has output voltages of 0, 9 volts, 18 volts and 27 volts. The primary is connected through leads 63 and 64 to a time delay relay 66 having alternate contact positions with leads 63 and 64. Power to relay 66 is 117 volts A.C. as shown through leads 67 and 68. Relay 66 is so constructed as to permit current to flow initially for say 0.5 second to the primary of transformer 61 through leads 68, 69 and 67, 64. Consequently the output of transformer 61 to heater element will be 27 volts for this initial period, which can be varied for example from 0.25 second to 0.75 second. After this initial period, the relay 66 will cause contact to be made between leads 67 and 63 which reduces the voltage output of the secondary 50 percent, i.e., to 13.5 volts, for approximately 2 seconds. Relay 66 may be for example of the type manufactured by the Potter and Brumfield Division of AMF Incorporated, model CLB-51-700l0.
The reason for the operation of the relay 66 is to provide an initial quick heating of element 41 followed by sustained heating for a longer period.
After the plate 40 and heating element 41 have been in the solid line position of FIGS. 1 and 2 for approximately three seconds, cylinder 34 will be actuated to extend clevis 32 and to rotate arms 26, 27 so that plate 40 assumes its vertical dotted line position. Immediately following in sequence, the cylinder 60 will be actuated to urge plate 59 downwardly, causing lateral withdrawal of stop member 56 through the agency of pin 57 in slot 58. This permits the head 14 to continue its interrupted descent and to apply the patch 13 under pressure to the substrate.
The foregoing thus describes a useful addition to patch applicator machines wherein heat is used to prepare adhesive bonding of a patch to a substrate. The heater element 41 is designed particularly adapted to be used with applicator heads which hold a patch in place under vacuum since the interstices between sections 41a of the element are quite narrow and thus do not permit the passage of substantial amounts of cooling air in the direction of the head 14.
It will be understood that the foregoing description has been of a particular embodiment of the invention and is therefore representative. In order to appreciate fully the scope of the invention reference should be made to the appended claims.
We claim:
1. In combination with an apparatus for applying a patch such as a section of hook and loop-type fastener tape and the like to a substrate said patch having an upper surface and a lower surface coated with an adhesive requiring the application of heat thereto prior to applying said patch to the substrate, said apparatus including a head for gripping the patch along the upper surface thereof, means for moving said head between a first position where said head receives the patch and the undersurface thereof is exposed and a second position where said head applies pressure against the patch to apply same to the substrate, the improvement comprising a heating element, a yoke mounting said heating element, means for pivotally connecting said yoke to said head, means connected to said head moving means for selectively rotating said yoke to selectively interpose said heater element between said head and said substrate and for withdrawing said heating element to a position adjacent to said head, means for selectively arresting movement of said head toward the substrate when the heating element is positioned between said head and said substrate to permit the heating element simultaneously to apply heat to said patch and said substrate, and for selectively withdrawing said arresting means when said patch and said substrate are sufficiently heated so as to permit said head-moving means to move said head toward said substrate to its second position and apply the patch against the substrate.
2. The apparatus of claim 1 which includes a reciprocable plate, means for moving said plate, a mounting block defining a slot for receiving a stop member slidably movable toward and away from the head moving means, said plate defining a slot angularly disposed with respect to said stop member, a pin attached to said member received within the slot in said plate whereby reciprocable movements of said plate cause sliding movement of said stop member, and means connected to said head moving means for contacting said stop member when said member is extended toward the head moving means, to arrest movement of said head toward the substrate and to permit the heating element simultaneously to apply heat to said patch and substrate.
3. The apparatus of claim 2 wherein said head includes vacuum pressure means for holding the patch, and said heating element is a flat generally sinusoidal combination of sections arranged closely together to prohibit substantial passage of air therebetween toward said head.
4. The apparatus of claim 3 wherein electrical circuit means are provided for directing a large amount of current to said heater element for an initial period, followed by a lesser amount of current for a longer period. l
Claims (4)
1. In combination with an apparatus for applying a patch such as a section of hook and loop-type fastener tape and the like to a substrate said patch having an upper surface and a lower surface coated with an adhesive requiring the application of heat thereto prior to applying said patch to the substrate, said apparatus including a head for gripping the patch along the upper surface thereof, means for moving said head between a first position where said head receives the patch and the undersurface thereof is exposed and a second position where said head applies pressure against the patch to apply same to the substrate, the improvement comprising a heating element, a yoke mounting said heating element, means for pivotally connecting said yoke to said head, means connected to said head moving means for selectively rotating said yoke to selectively interpose said heater element between said head and said substrate and for withdrawing said heating element to a position adjacent to said head, means for selectively arresting movement of said head toward the substrate when the heating element is positioned between said head and said substrate to permit the heating element simultaneously to apply heat to said patch and said substrate, and for selectively withdrawing said arresting means when said patch and said substrate are sufficiently heated so as to permit said headmoving means to move said head toward said substrate to its second position and apply the patch against the substrate.
2. The apparatus of claim 1 which includes a reciprocable plate, means for moving said plate, a mounting block defining a slot for receiving a stop member slidably movable toward and away from the head moving means, said plate defining a slot angularly disposed with respect to said stop member, a pin attached to said member received within the slot in said plate whereby reciprocable movements of said plate cause sliding movement of said stop member, and means connected to said head moving means for contacting said stop member when said member is extended toward the head moving means, to arrest movement of said head toward the substrate and to permit the heating element simultaneously to apply heat to said patch and substrate.
3. The apparatus of claim 2 wherein said head includes vacuum pressure means for holding the patch, and said heating element is a flat generally sinusoidal combination of sections arranged closely together to prohibit substantial passage of air therebetween toward said head.
4. The apparatus of claim 3 wherein electrical circuit means are provided for directing a large amount of current to said heater element for an initial period, followed by a lesser amount of current for a longer period.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17061171A | 1971-08-10 | 1971-08-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3773597A true US3773597A (en) | 1973-11-20 |
Family
ID=22620593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US3773597D Expired - Lifetime US3773597A (en) | 1971-08-10 | 1971-08-10 | Heating apparatus |
Country Status (7)
Country | Link |
---|---|
US (1) | US3773597A (en) |
JP (1) | JPS5037575B2 (en) |
CA (1) | CA973786A (en) |
DE (1) | DE2228356A1 (en) |
FR (1) | FR2149753A5 (en) |
GB (1) | GB1388175A (en) |
IT (1) | IT954644B (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4057451A (en) * | 1975-01-30 | 1977-11-08 | Libbey-Owens-Ford Company | Mirror mount applying method |
US4120718A (en) * | 1975-09-22 | 1978-10-17 | Minnesota Mining And Manufacturing Company | Applicator for heat-activatable tape |
US4411721A (en) * | 1982-02-25 | 1983-10-25 | The Mead Corporation | Apparatus and method for attaching fastener tapes |
US5227003A (en) * | 1990-08-24 | 1993-07-13 | Kabushiki Kaisha Shinkawa | Lead frame retaining device |
US20050077270A1 (en) * | 2003-10-09 | 2005-04-14 | Sommerfeld Troy A. | Temperature indicating consumable |
CN105192971A (en) * | 2015-09-17 | 2015-12-30 | 浙江嵊州亨达领带时装有限公司 | Button set-in machine for garment production |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114033780A (en) * | 2021-11-18 | 2022-02-11 | 长沙山普智能科技有限公司 | Full-automatic ceramic chip pasting machine and chip pasting method |
-
1971
- 1971-08-10 US US3773597D patent/US3773597A/en not_active Expired - Lifetime
-
1972
- 1972-04-04 CA CA138,812A patent/CA973786A/en not_active Expired
- 1972-04-11 IT IT6811072A patent/IT954644B/en active
- 1972-04-12 GB GB1694872A patent/GB1388175A/en not_active Expired
- 1972-06-10 DE DE2228356A patent/DE2228356A1/en active Pending
- 1972-06-14 FR FR7221456A patent/FR2149753A5/fr not_active Expired
- 1972-08-10 JP JP7957372A patent/JPS5037575B2/ja not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4057451A (en) * | 1975-01-30 | 1977-11-08 | Libbey-Owens-Ford Company | Mirror mount applying method |
US4120718A (en) * | 1975-09-22 | 1978-10-17 | Minnesota Mining And Manufacturing Company | Applicator for heat-activatable tape |
US4411721A (en) * | 1982-02-25 | 1983-10-25 | The Mead Corporation | Apparatus and method for attaching fastener tapes |
US5227003A (en) * | 1990-08-24 | 1993-07-13 | Kabushiki Kaisha Shinkawa | Lead frame retaining device |
US20050077270A1 (en) * | 2003-10-09 | 2005-04-14 | Sommerfeld Troy A. | Temperature indicating consumable |
US7084367B2 (en) * | 2003-10-09 | 2006-08-01 | Illinois Tool Works Inc. | Temperature indicating consumable |
CN105192971A (en) * | 2015-09-17 | 2015-12-30 | 浙江嵊州亨达领带时装有限公司 | Button set-in machine for garment production |
CN105192971B (en) * | 2015-09-17 | 2017-11-03 | 浙江嵊州亨达领带时装有限公司 | A kind of button set-in machine for garment production |
Also Published As
Publication number | Publication date |
---|---|
CA973786A (en) | 1975-09-02 |
GB1388175A (en) | 1975-03-26 |
JPS4827848A (en) | 1973-04-12 |
IT954644B (en) | 1973-09-15 |
JPS5037575B2 (en) | 1975-12-03 |
DE2228356A1 (en) | 1973-03-22 |
FR2149753A5 (en) | 1973-03-30 |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: VELCRO INDUSTRIES B.V.,NETHERLANDS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VELCRO USA, INC.;REEL/FRAME:004871/0369 Effective date: 19870930 Owner name: VELCRO INDUSTRIES B.V., NEIUWE WETERINGSTRAAT 38, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VELCRO USA, INC.;REEL/FRAME:004871/0369 Effective date: 19870930 |