US3782678A - Apparatus for making pairs of profiled interfitting frames of plastic - Google Patents

Apparatus for making pairs of profiled interfitting frames of plastic Download PDF

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Publication number
US3782678A
US3782678A US00138726A US3782678DA US3782678A US 3782678 A US3782678 A US 3782678A US 00138726 A US00138726 A US 00138726A US 3782678D A US3782678D A US 3782678DA US 3782678 A US3782678 A US 3782678A
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US
United States
Prior art keywords
mold
separating member
window
sash frame
frames
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00138726A
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English (en)
Inventor
H Thams
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Individual
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19702021740 external-priority patent/DE2021740C/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3782678A publication Critical patent/US3782678A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/20—Constructions depending on the use of specified materials of plastics
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/301—Modular mould systems [MMS], i.e. moulds built up by stacking mould elements, e.g. plates, blocks, rods
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D12/00—Producing frames
    • 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
    • B29L2031/001—Profiled members, e.g. beams, sections
    • B29L2031/003—Profiled members, e.g. beams, sections having a profiled transverse cross-section
    • B29L2031/005—Profiled members, e.g. beams, sections having a profiled transverse cross-section for making window frames

Definitions

  • windows including a frame and a window wing and similar structures may be made of extruded profiled rods or pressed members which are welded together, or the prefabricated members are adhered or screwed together. It is also known to produce one-piece window wings and sash frames, for example by casting or hot pressing. The parts individually produced in accordance with these known methods must subsequently be fitted together, and therefore require the' provision of elastomer seals. This requires additional machining operations.
  • molds serving to cast parts of epoxy resins, other than sash frames and window wings, or the like.
  • gelatinized elastic materials for curved structural elements consisting of curable plastic material, which molds are profiled by impressions, wherein initially a mold plate of elastomer plastic material is made on a planar prototype and formed at one side with the respective profile, while the other side is planar. Subsequent to the gelatinizing this mold plate is snugly fitted and fixed with its planar side to a parent body, the curvature of which corresponding to the structural element to be made.
  • window frames and door frames are made of tubular core members using molds for encasing them in epoxy resin, wherein the epoxy resin is cast around a frame made of commercial metal tubes.
  • the aim of this is to achieve a better economy, a greater strength of the entire profile and an increased connection stiffness to the window frame.
  • this latter method it has been proposed to initially cast the window wing in a mold with a sealing profile provided around its periphery, and to cast directly subsequently, in the same mold, while the window wing is still in a warm state and has not been cured yet, the sash frame, and thereby directly forming the sealing profile of the window structure, whereupon the window wing and the sash frame are removed out of the mold in unison, and then are separated from each other, whereby the economy and also the exactness of the profile are to be increased yet.
  • the invention aims to improve the manufacturing method to achieve a better economy, wherein the finished product is to be a window structure ready to be shipped and to be installed.
  • the entire window structure is cast in a single working operation in a common mold with a preferably tapered contacting and sealing separating surface between the sash frame and the window wing, wherein the separation is achieved by means of a separating element with fully equal profiles at both sides.
  • the window wing and the sash frame can solidify simultaneously, whereby practically half of the casting time and the above mentioned additional subsidiary time required in connection with the known methods is saved.
  • An especially suitable device for carrying through the method according to the invention comprising a mold and a separating member subdividing the mold into a mold cavity for the sash frame and a mold cavity for the window wing, which separating member has an effective area corresponding to the sealing profile between the sash frame and the window wing, and being contoured equally at both sides.
  • a mold is especially easy to handle, particularly so, if it is made of hollow aluminium profiles.
  • the separating member assures absolutely equal contours with respect to the sealing, or contacting surfaces provided at the window wing and the sash frame, and besides this the installation is simple and the structure is easy to handle.
  • the mold may be constructed as a one-piece mold, provided the profiled structure to be made in accordance with the invention does not include particular projections, which would make it difficult or impossible to empty a one-piece mold.
  • This one-piece construction will always be used advantageously in connection with a window structure which does not include recesses in the window wing for the window pane, but in which the latter is retained by 7 two ledges separately secured to the window wing.
  • a bipartite mold may be used made of hollow profiles.
  • the mold may be provided with mounting means for the separating member, preferably in form of holes, slots, or the like, whereby it is possible, for instance, to retain the separating member in contacting engagement with the mold, or within the same respectively, by applying a vacuum through these holes or slots.
  • the separating member may, according to another feature of the invention, be provided with the intermediate portion enlarged with respect to the remaining thickness; for example it may consist of two superposed equally contoured parts formed in such a manner that these parts, after being assembled to form the separating member, will form a cavity between themselves in the zone of the intermediate portion.
  • the separating member may be very thin, and even a foil may be used.
  • a foil may be used.
  • a readily deep-drawable foil of acetate may be used,.allowing. to provide any desired profile in a simple and economical manner.
  • the foil may even be used as packing material and/or as building material, or as an emergency windowpane respectively, in which case it should cover the entire profiled frame structure.
  • separating members of greater thickness may be used just as well.
  • a bipartite mold is used, wherein the first of the two mold sections together with the separating member, which form a unit, is easily placeable into the second mold section, which normally forms the main part or base of the mold, and the mold cavity for the sash frame is disposed within this unit first mold section separating member, while the mold cavity for the window wing is arranged between the separating member ans the second mold section.
  • the mold cavity for the sash frame should be arranged laterally above the mold cavity for the window wing, and the upper edge of the separating member should determine the extent of filling the mold cavity for the sash frame.
  • the casting process is extremely simple, because after filling the mold cavity for the sash frame the epoxy resin will flow over the upper edge of the separating member into the mold cavity of the window wing. Therefore, only one inlet for the total amount of epoxy resin, predetermined by the frame construction is required, thereby avoiding to split the amount of epoxy resin for the window wing and the sash frame by separate measurements.
  • the shifting of the plane between window wing and the sash frame i.e., the differing height between the two mold cavities, depends entirely an the thickness of the separating member if the surface of the window wing and the sash frame of the finished window are to be disposed in a common plane. In this manner it is possible to compensate for a possible too great drop of the window wing into the sash frame.
  • FIG. 1 shows a vertical section of a one-piece mold with a separating member placed therein;
  • FIG. 2 shows a vertical section of the mold shown in FIG. 1 with a profiled window wing and sash frame contained therein;
  • FIG. 3 shows a vertical section of another embodiment of the mold, together with a modified sealing profile of the window structure
  • FIG. 4 shows a vertical section of a further embodiment of the mold and the seaprating member.
  • FIGS. 1 to 3 show a one-piece mold 1 (FIGS. 1 and 2), and a bipartite mold (FIG. 3) consisting of two mold sections 11 and 12.
  • a separating member 2 is arranged including an effective area 234 which subdivides the mold into two moldcavities 103 and 104 for a sash frame 3, and a window wing 4 respectively of a window structure to be cast.
  • the separating member 2 is secured to the mold 1, or the mold sections 11, 12 respectively, in the desired position by fastening holes 13, provided in the mold 1, or the mold sections 11, 12 respectively.
  • the separating member 2 is, with respect to the wall of the mold, very thin and may even be a foil, in which latter case it may be retained by vacuum applied through the holes 13.
  • the effective area 234 of the separating member 2 is, according to the exemplified embodiment shown in FIGS. 1 and 2, formed in such a way that a tapered sealing fit is formed between the window wing 4 and the sash frame 3.
  • the inner contours of the mold 1, or the mold sections 11 and 12 correspond to the outer dimensions of the window structure to be made wherein, after the mold section 12 is removed from the mold section 11,
  • the window structure including a window wing provided with a recess for the window-pane may be taken out of the mold.
  • the window structure cast in the mold according to FIGS. 1 and 2 must later be provided with ledges for the windowpane.
  • epoxy resin may be cast into the mold cavities 103 and 104 simultaneously.
  • epoxy resin of low viscosity such as polyester, or epoxy resin with filling material, and the desired color paste are used which. after adding a corresponding hardening agent, will solidify at room temperature, or by adding heat, thus assuring a precise form of the contoure of the mold cavity.
  • the parts are removed out of the mold by releasing the separating member 2, whereupon the mold l, or the mold section 11 respectively, is moved downwardly, while the frame structure is supported on not illustrated ejectors in a known manner at a corresponding level to be removed.
  • the window After mounting the necessary hardware on the frame structure the window is ready for shipment. If a foil is used as separating member 2 it is advisable to let it project sufficiently over the sides, so as to be able to use it as a packing foil, or preliminary windowpane. Practically the separating member should not be removed until the frame structure has been installed, and the window is opened for the first time.
  • the separating member 2 is replaced by a separating member consisting of two parts 23, 24 forming two tapered surfaces and therebetween an intermediate part 21.
  • the tapered surfaces preferably include an angle of 70 with the horizontal.
  • the two foil parts 23, 24 are equally contoured and merely shifted relative to each other, preferably 3 to 5 mm, so as to form to the intermediate zones 231, 241.
  • Such a cavity may also be provided within the mold in such a manner that prior to the casting a contoured strip with the corresponding dimensions is placed into the mold, wherein this profiled strip may consist of aluminium, card board, or the like, and, of course, also of the separating member 2,
  • a mold la has been subdivided into two mold sections 1 la and 12a, of which the first section 12a forms a unit with a separating member 2a including an upper edge 25a.
  • This unit may easily be inserted into and removed from the second mold section 11a.
  • a profiled frame structure is to be made consisting of a sash frame 3a and a window wing 40 including a sealing profile which is tapered, as in the above described embodiments.
  • a mold cavity 103a for the sash frame 3a has been provided within the unit first mold section 12a separating member 2a, while a mold cavity 104a for the window wing 4a is formed between the separating member 2a and the second mold section 11a.
  • the separating member 2a which has an effective area 234a shown by phantom lines, includes tapered sealing surfaces 203a, 204a, and 203b, 204b respectively, facing the two mold cavities 103a, 104a, and are absolutely equally contoured.
  • These tapered sealing surfaces again include preferably an angle of with the horizontal and are shifted relative to each other, whereby practically a step in form of an intermediate portion 21a is formed at each side of the separate ing member.
  • the intermediate portion 21a will form a cavity in the contacting surface between the sash frame 30 and the window wing 4a. This cavity assures an unobstructed lowering of the window wing 4a toward the sash frame 3a, thus achieving an optimum sealing effect.
  • the operation with the mold 1a is such that initially the mold cavity 103a is filled, and after it has been filled completely the epoxy resin will flow over the upper edge 25a of the separating member 2a and will fill the mold cavity 1040. Then the sash frame 3a and the window wing 4a will solidify simultaneously, and may then be removed out of the mold in unison by raising the first mold section 12a.
  • Mold means for casting a so-called plastics profiled frame consisting of a pair of interfitting frame elements in the form of a wing and a sash frame, these two elements engaging each other by profiled surfaces in a sealing manner, comprising a common mold for said pair of elements including a separating member having complementarily profiled side surfaces, one side surface defining a mold cavity wall for said sash frame while the other side surface defines a mold cavity wall for said window wing, the separating member thus dividing the mold into two mold cavities, first mold section means together with the separating member forming a unit which is placeable into a second mold section, and wherein the mold cavity for the sash frame is disposed within said unit, while the mold cavity for the window wing is arranged between the separating member and the second mold section, both mold cavities being filled with plastic material in a single continuous 8 ing a weir determining the extent of filling the mold cavity for said sash frame with plastic material and allowing the latter to overflow into the lower cavity for said window

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wing Frames And Configurations (AREA)
  • Door And Window Frames Mounted To Openings (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
US00138726A 1970-05-04 1971-04-29 Apparatus for making pairs of profiled interfitting frames of plastic Expired - Lifetime US3782678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702021740 DE2021740C (de) 1970-05-04 Verfahren zum Herstellen von aus einteiligen Flugein und einteiligen Zar gen bestehenden Fenstern oder Türen, so wie ein Trennelement zur Durchfuhrung des Verfahrens

Publications (1)

Publication Number Publication Date
US3782678A true US3782678A (en) 1974-01-01

Family

ID=5770181

Family Applications (1)

Application Number Title Priority Date Filing Date
US00138726A Expired - Lifetime US3782678A (en) 1970-05-04 1971-04-29 Apparatus for making pairs of profiled interfitting frames of plastic

Country Status (9)

Country Link
US (1) US3782678A (xx)
BE (1) BE766615A (xx)
CH (1) CH527047A (xx)
FR (1) FR2093453A5 (xx)
GB (1) GB1324564A (xx)
IE (1) IE35264B1 (xx)
LU (1) LU63082A1 (xx)
NL (1) NL7106049A (xx)
ZA (1) ZA712709B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918863A (en) * 1972-04-17 1975-11-11 Mccord Corp One step dual foam crash pad mold assembly
US20180290347A1 (en) * 2011-11-28 2018-10-11 Ford Global Technologies, Llc Dual firmness head restraint

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1285816A (en) * 1915-06-09 1918-11-26 Cement Products Company Stave-mold.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1285816A (en) * 1915-06-09 1918-11-26 Cement Products Company Stave-mold.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918863A (en) * 1972-04-17 1975-11-11 Mccord Corp One step dual foam crash pad mold assembly
US20180290347A1 (en) * 2011-11-28 2018-10-11 Ford Global Technologies, Llc Dual firmness head restraint
US11904512B2 (en) * 2011-11-28 2024-02-20 Ford Global Technologies, Llc Dual firmness head restraint

Also Published As

Publication number Publication date
DE2021740B2 (de) 1972-11-02
LU63082A1 (xx) 1972-12-11
IE35264B1 (en) 1975-12-24
IE35264L (en) 1971-11-04
ZA712709B (en) 1972-01-26
BE766615A (fr) 1971-11-03
DE2021740A1 (de) 1971-11-18
GB1324564A (en) 1973-07-25
NL7106049A (xx) 1971-11-08
FR2093453A5 (xx) 1972-01-28
CH527047A (de) 1972-08-31

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