GB2071566A - Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic sheet material - Google Patents

Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic sheet material Download PDF

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Publication number
GB2071566A
GB2071566A GB8009003A GB8009003A GB2071566A GB 2071566 A GB2071566 A GB 2071566A GB 8009003 A GB8009003 A GB 8009003A GB 8009003 A GB8009003 A GB 8009003A GB 2071566 A GB2071566 A GB 2071566A
Authority
GB
United Kingdom
Prior art keywords
ring
rings
sheet material
magazine
pressure shoe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB8009003A
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GB2071566B (en
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8009003A priority Critical patent/GB2071566B/en
Publication of GB2071566A publication Critical patent/GB2071566A/en
Application granted granted Critical
Publication of GB2071566B publication Critical patent/GB2071566B/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
    • A61F5/445—Colostomy, ileostomy or urethrostomy devices
    • 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
    • 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
    • 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
    • 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
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
    • B29C66/4742—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts
    • B29C66/47421—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat said single elements being spouts said spouts comprising flanges
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545—Perforating, cutting or machining during or after moulding
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/887—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced locally reinforced, e.g. by fillers
    • 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
    • B29L2031/709—Articles shaped in a closed loop, e.g. conveyor belts
    • B29L2031/7096—Rings or ring-like articles
    • B29L2031/71—Eyelets
    • 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
    • B29L2031/7148—Blood bags, medical bags

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Reinforcing rings 6 with outwardly projecting flaps 10 or ears are taken one by one from a magazine 7 and are transferred to a ready position from which they are moved downwardly onto a thermoplastic sheet material 2 for being welded thereto. In the ready position the rings 6 are supported solely at their flaps 10 or ears which, by being upwardly deflected, remain in engagement with their support means 5 during almost the entire downward movement of the ring main body, thereby preventing the ring from dropping free of a pressure shoe 13 used to force the ring main body down upon the sheet material. A welding electrode 3 is provided. <IMAGE>

Description

SPECIFICATION Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic material In the manufacture of colostomy pouches and similar articles consisting mainly of thermoplastic sheet material and presenting at least one hole or aperture giving access through the wall of the pouch, it is customary to marginally reinforce the sheet material around the hole by means of a ring or eyelet that is welded to the sheet material either before or after, or possibly, at the same time as the hole is made by a cutting or stamping operation.Usually, the reinforcing rings or eyelets have a U-shaped cross section presenting a bottom portion to be welded to the sheet material, and inner and outer upstanding flanges permitting the ring with the pouch or bag welded thereto to be attached to a counterpart by snap action engagement, the outer flange presenting at least two radially outwardly projecting flexible flaps serving as carrying members, and possibly also a flap serving as a finger grip.
The invention relates to an apparatus that enables such rings or eyelets to be welded onto the sheet material at a very high rate and with great accuracy.
More particularly, the invention relates to an apparatus for surface welding prefabricated reinforcing rings or eyelets having at least two outwardly projecting flexible flaps, to a thermoplastic sheet material to be formed with marginally reinforced holes. The apparatus is of the known type which comprises a table defining a sheet supporting upper surface around a welding area, a magazine for the prefabricated reinforced rings, a mechanism for feeding the rings one at a time from the magazine to a ready position adjacent the welding area, a pressure shoe located above this area and being movable between an upper inoperative position and a lower position in which it is operative to properly locate a reinforcing ring relative to and in contact with the sheet material, and an annular welding electrode located below the welding area and being movable between an upper position in which it is substantially flush with the sheet supporting upper surface of the table and an inoperative lower position.
In a known apparatus of this type the ring feeding mechanism comprises a rotary feed table provided with two or more sockets or apertures of such precise shape that the rings or eyelets may be held therein by-friction during the transfer from the magazine to the ready position in which the pressure shoe is operative to force the ring downwardly through the socket or aperture and onto the sheet material in a position exactly aligned with the welding electrode. This device can operate with a high degree of accuracy, but, firstly, an operator is required to insert the rings in the sockets or apertures and, secondly, the feed table itself as well as the rings or eyelets must be very precisely shaped when the rings shall be held in the sockets solely by friction.Further, the weight of the feed table is relatively high so that great masses have to be moved intermittently which restricts the production rate.
These deficiences are remedied through the present invention according to which the ring feeding mechanism includes a guide member extending above the sheet supporting surface from below the magazine to a readly position between the welding area and the pressure shoe in the upper position thereof, a slide to displace the rings one at a time along the guide member from the magazine to the ready position, means to locate the rings in the ready position concentrically below the pressure shoe, and means to support each ring in this position solely by engagement with its outwardly projecting flexible flaps.
While with the prior art device described in the foregoing the feeding mechanism is responsible for the exact positioning of the reinforcing rings in the ready position and for holding the rings in this position until they are carried away by the descending pressure shoe, the slide referred to above is only responsible for the transfer of the rings to approximately the right position because the final adjustment may be obtained so-to-speak automatically by the pressure shoe as it comes into contact with the ring during its downwardly directed stroke from the inoperative to the operative position. This is due to the fact that the ring has a certain freedom for horizontal displacement in all directions while resting with its flaps on the support means.As soon as a ring has been brought into the ready position, the slide may return to its initial position, while the welding operation is completed, so that no extra time is used for this return stroke. A particular feature in the operation of the apparatus is that the flexibility of the flaps is utilized to permit disengagement of the ring from the support means, as will be more fully explained in the following description with reference to the drawing illustrating a preferred embodiment of the invention.
In the drawing, Fig. 1 is a rather diagrammatic side elevation, partly in section, of the entire apparatus, Fig. 2 a top plan view taken along the line Il-Il in Fig. 1, and Figs. 3 and 4 sectional views taken along the line Ill-Ill in Fig. 1 and with the pressure shoe and the welding electrode in two different positions.
In the embodiment illustrated on the drawing the apparatus comprises a stationary table 1 along which a thin thermoplastic sheet material 2 may be intermittently advanced by means not illustrated. A tubular welding electrode 3 is vertically reciprocable between a lower inoperative position, Figs. 1 and 3, and an upper operative position, Fig. 4, in which its tip penetrates an aperture 4 in the table 1 and contacts the lower surface of the sheet material.
Supported above the table 1 is a stationary support plate 5 serving as a guide member for reinforcing rings 6 to be successively transferred from a magazine 7 formed by three vertical rods 8, to a ready position above the welding electrode 3.
At this location the support plate 5 has an aperture 9, the diameter of which is somewhat larger than that of the annular body of the ring 6, but smaller than the distance between the tips of a pair of opposed flexible flaps 10 formed integrally with the outer annular flange of the ring main body which, as is conventional, has a U-shaped cross section.
A slide member 11 is horizontally displaceable along the support plate 5 between a receiving station adjacent the ring magazine 7 Figs. 1 and 2, and a delivery station adjacent the aperture 9.
Except when in the extreme receiving station, the slide member 11 forms a movable bottom of the magazine thus allowing only a single ring 6 at a time to be separated from the pile of rings held in the magazine.
In the ready position above the welding electrode 3 the main body of the ring 6 is received in the aperture 9 and rests with its flaps or ears 10 on the support plate 5 which prevent the ring from dropping through the aperture by its own weight.
The position of the ring is to some degree defined by a pair of stops 12 so that the ring will be at least approximately aligned with the welding electrode 3 and with an upper cup-shaped pressure shoe 13 coaxial therewith. By a downward movement of the pressure shoe its lower edge catches the ring 6 by entering the channel in its main body, possibly while slightly displacing the ring into its desired exact ready position, and by a continued downward stroke the pressure shoe 13 forces the ring 6 through the aperture 9 and into contact with the upper surface of the sheet material 2 whereupon the welding operation may be performed while the slide member returns to its receiving position.
As will be best understood from Figs. 3 and 4, the aperture 9 is large enough to allow the passage of the ring 6 with the flaps 10 by utilizing their flexiblity, and the flaps will remain in contact with the edge of the aperture almost during the entire movement so as to prevent the ring from dropping free of the pressure shoe.
Although the aperture 9 is shown to be purely circular and substantially greater than the outer diameter of the ring main body, it will be understood that it could fit more closely around the main body of the ring and be provided with extra recesses permitting the passage of the flaps 10 upon upwardly deflexion thereof.

Claims (2)

1. Apparatus for surface welding prefabricatect reinforcing rings or eyelets having at least two outwardly projecting flexible flaps to a thermoplastic sheet material to be formed with marginally reinforced holes, comprising a table defining a sheet supporting upper surface around a welding area, a magazine for the prefabricated reinforcing rings, a mechanism for feeding the rings one at a time from the magazine to a ready position adjacent the welding area, a pressure shoe located above this area and being movable between an upper inoperative position and a lower position in which it is operative to properly locate a reinforcing ring relative to and in contact with the sheet material, and an annular welding electrode located below the welding area and being movable between an upper position in which it is substantially flush with the sheet supporting upper surface, of the table and an inoperative lower position, characterized in that the ring feeding mechanism includes a guide member extending above the sheet supporting surface from below the magazine to a ready position between the welding area and the pressure shoe in the upper position thereof, a slide to displace the rings one at a time along the guide member from the magazine to the ready position, means to locate the rings in the ready position concentrically below the pressure shoe, and means to support each ring in this position solely by engagement with its outwardly projecting flexible flaps.
2. Apparatus as claimed in claim 1 , wherein the quide member comprises a stationary supporting plate mounted above the sheet supporting surface of the table and having an aperture that is at least substantially coaxial with the pressure show and the welding electrode and of such shape and size that only the flexible flaps prevent the ring from falling freely through the aperture, the aperture being large enough to allow the passage of the entire ring upon upwardly deflexion of the flaps caused by the downward stroke of the pressure shoe.
GB8009003A 1980-03-17 1980-03-17 Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic material Expired GB2071566B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8009003A GB2071566B (en) 1980-03-17 1980-03-17 Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8009003A GB2071566B (en) 1980-03-17 1980-03-17 Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic material

Publications (2)

Publication Number Publication Date
GB2071566A true GB2071566A (en) 1981-09-23
GB2071566B GB2071566B (en) 1983-09-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB8009003A Expired GB2071566B (en) 1980-03-17 1980-03-17 Apparatus for surface welding prefabricated reinforcing rings or eyelets to a thermoplastic material

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179950A1 (en) * 1984-11-01 1986-05-07 Raymond Leslie Woodley Improvements relating to sealing arrangements
FR2721249A1 (en) * 1994-06-20 1995-12-22 Injelec Method and machine for producing containers in the form of cups, as well as containers obtained.
US7412813B2 (en) 2003-08-08 2008-08-19 Sig Technology Ltd. Device and method for fixing closing films to pouring elements arranged on composite packages

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179950A1 (en) * 1984-11-01 1986-05-07 Raymond Leslie Woodley Improvements relating to sealing arrangements
FR2721249A1 (en) * 1994-06-20 1995-12-22 Injelec Method and machine for producing containers in the form of cups, as well as containers obtained.
EP0688661A1 (en) * 1994-06-20 1995-12-27 Injelec S.A. Method and machine for making coupe-shaped containers and containers obtained thereby
US7412813B2 (en) 2003-08-08 2008-08-19 Sig Technology Ltd. Device and method for fixing closing films to pouring elements arranged on composite packages

Also Published As

Publication number Publication date
GB2071566B (en) 1983-09-21

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20000316