US3901642A - Apparatus for the production of pressure-shaped parts from oriented wood particles - Google Patents

Apparatus for the production of pressure-shaped parts from oriented wood particles Download PDF

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Publication number
US3901642A
US3901642A US423486A US42348673A US3901642A US 3901642 A US3901642 A US 3901642A US 423486 A US423486 A US 423486A US 42348673 A US42348673 A US 42348673A US 3901642 A US3901642 A US 3901642A
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US
United States
Prior art keywords
cavity
particles
face
base
mold
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Expired - Lifetime
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US423486A
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English (en)
Inventor
Urman Alexandrov Urmanov
Veselin Georgiev Ivanov
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DSO MEBEL
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DSO MEBEL
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N5/00—Manufacture of non-flat articles
    • B27N5/02—Hollow articles

Definitions

  • An apparatus for the production of shaped parts from wood particles comprises a base plate carrying a plui Forelgn Apphcatlon Pnonty Data rality of fluid-operated cylinders which act upon a Apr. 25, 1973 Bulgaria 23437 mold-cavity support open upwardly along a horizontal face.
  • a ram mounted on the base plate is received in [52] US. Cl. 425/410; 425/78; 425/199; the cavity and an orienting device is detachably 425/352; 425/432; 425/444; 425/456 mounted upon the face plate so that its chamber is [51] Int. Cl. B29c 3/00 aligned with the mold-cavity.
  • the orienting device is [58] Field of Search 425/352, 78, 354, 199, provided with'a downwardly convergent compartment 425/355, 406, 410, 431, 432, 444, 456 above a parallel-wall chamber communicating with the mold-cavity and provided with vertical partitions [56] References Cited which serve to orient the particles when the device is UNITED STATES NTS vibrated by appropriate means.
  • a press platen can be 2,598,016 5/1952 Richardson Sr 425/78 X applied to the face to drive the latter toward the base 1172156 3,1965 Bclden 425/78 pl p removal f the dev1ce,t0 mp the p 3,382,540 5/1968 Van D Maden Ct a1. 425/78 tlcles n h m l -cavity.
  • This invention relates to an apparatus for the produc tion from oriented wood particles of pressure-shaped parts for furniture and engineering products, such as seat frames for chairs, frames and legs for tables, bases and base frames for cabinet-type furniture, etc.
  • a method and an apparatus are known in which the particles are oriented and poured directly into the pressure mold, while orienting metal sheets are provided in the cavity of the pressure mold. It is a drawback of this method that, during the removal of the metal sheets from cavity which is filled with oriented particles, the particles are disarranged and part of the particle mass is even thrown out of the cavity.
  • this apparatus the particles are oriented and poured in an orienting device and are then transferred into the cavity of the pressure mold.
  • FIG. 1 is a longitudinal cross-sectional view of the orienting apparatus at the start for the process of orienting the particles
  • FIG. 2 is a plan view partly in a cross-section view taken along line A-A in FIG. 1;
  • FIG. 3 is a longitudinal cross-sectional view similar to FIG. 1 of the orienting apparatus at the end of the orienting process;
  • FIG. 4 is a longitudinal cross-sectional view of the pressure mold, disposed in the press, with a pressed P
  • FIG. 5 is a longitudinal cross-sectional view of the pressure mold at the moment of the removal of the pressed part.
  • the apparatus for the production of pressure-shaped parts from oriented particles comprises a device for orienting the particles 1 and a pressure mold 2.
  • the orienting device for the particles comprises a base plate 3, on which the housing 4 is disposed, which carries the tray 5 in which the particles to be oriented are fed onto its grid bottom 6.
  • the orienting metal sheets are convergent, while at their lower part they are parallel one to another and their cross-section along line BB corresponds to the crosssection of the mold cavity 2.
  • the orienting device for the particles 1 is attached rigidly to the pressure mold.
  • Attached to the housing 4 of the orientingdevice for the particles is a vibrator 10.
  • the pressure mold comprises a base 11, on which are mounted hydraulic cylinders 12- with double-acting pistons 13, which are connected to the front plate 14. Attached to the front plate 14 is the cavity 15 .of the pressure mold 2, into which the oriented particles for the part 20 are pressed. Fastened to the base 11 by means of the carriers 17 is a punch or ram 16, which glides freely in the cavity 15. Attached to the base 11 of the pressure mold 2 is a vibrator 18.
  • the apparatus operates as follows:
  • the device for orienting the particles 1 is placed on the pressure mold 2 so, that the base plate 3 is supported by the front plate 14.
  • the ends of the orienting metal sheets 3 protrude into the cavity 15, and then the device for orienting the particles 1 and the pressure mold 2 are connected rigidly by means of the locking devices 9.
  • the pistons 13 are set in bottom position of the hydraulic cylinders 12, so that the punch 16 is at the upper end of the cavity 15.
  • the particles needed for one part, which are coated with adhesive and are dosed (metered) by weight, are poured uniformly onto the grid bottom 6.
  • the vibrators l0 and 18 are switched on, and under the action of the vibrations the particles fall through the holes of the grid bottom 6 and coming into contact with the orienting metal sheets 8, they orient themselves parallel to the plate and at the same time parallel to each other.
  • the punch 16 begins to sink into the cavity 15 of the pressure mold 2 in such a way, that a column of oriented particles is obtained between the orienting metal sheets 8 and the zone of final orientation (see FIG.
  • the rate of sinking of the punch 16 is coordinated with the passing of the particles through the grid bottom 6 in such a way, that in the zone of final orientation there is always a column of oriented particles and this column fills continuously and smoothly the cavity 15 of the pressure mold 2.
  • the device for orienting the particles is removed and the particles are pressed by means of the press 19 (see FIG. 4).
  • the pressure-shaped part 20 of oriented wood particles is removed from the pressure mold 2 by moving the pistons 13 to their bot tom end positions (see FIG. 5).
  • An apparatus for producing shaped bodies from oriented wood particles comprising:
  • a ram conforming to the configuration of said cavity and mounted on said base for compacting a mass of particles within said cavity between said face said chambers; and a grid disposed between said chambers, said particles passing through said grid upon vibration; and press platen adapted to bear against said face upon removal of said device to compact oriented wood particles in said cavity between said ram and said platen upon displacement of said face toward said base by said platen.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
US423486A 1973-04-25 1973-12-10 Apparatus for the production of pressure-shaped parts from oriented wood particles Expired - Lifetime US3901642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG23437A BG18244A1 (it) 1973-04-25 1973-04-25

Publications (1)

Publication Number Publication Date
US3901642A true US3901642A (en) 1975-08-26

Family

ID=3899406

Family Applications (1)

Application Number Title Priority Date Filing Date
US423486A Expired - Lifetime US3901642A (en) 1973-04-25 1973-12-10 Apparatus for the production of pressure-shaped parts from oriented wood particles

Country Status (11)

Country Link
US (1) US3901642A (it)
BG (1) BG18244A1 (it)
CA (1) CA1012313A (it)
CS (1) CS171108B1 (it)
DD (1) DD110802A5 (it)
DE (1) DE2360957C3 (it)
FR (1) FR2227122B1 (it)
IT (1) IT997817B (it)
PL (1) PL90718B1 (it)
SE (1) SE394184B (it)
SU (1) SU573369A1 (it)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518335A (en) * 1984-03-14 1985-05-21 Allied Corporation Dilatant mold and dilatant molding apparatus
US4708621A (en) * 1985-12-27 1987-11-24 Hawkeye Concrete Products Co. Concrete pipe making machine
US5792484A (en) * 1997-02-19 1998-08-11 Hawkeye Concrete Products Co. Automated feed system for pipe making machine
WO2001091986A1 (en) * 2000-05-30 2001-12-06 Strandwood Molding, Inc. Spring-loaded ejectrors for wood strand molding
US20030047089A1 (en) * 2001-08-31 2003-03-13 Jurgen Hinzpeter Method and apparatus for minimizing the spread of maximumcompression forces in a powder press

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2621717C2 (de) * 1976-05-15 1982-04-01 Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld Vorrichtung zum dosierten Füllen stationärer Preßformen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598016A (en) * 1950-04-17 1952-05-27 Hpm Dev Corp Apparatus for hot pressing powdered metals
US3172156A (en) * 1962-09-06 1965-03-09 Cincinnati Shaper Co Compacting press
US3382540A (en) * 1965-11-30 1968-05-14 Philips Corp Press for manufacturing articles from powder material
US3416191A (en) * 1965-03-30 1968-12-17 Deutsche Edelstahlwerke Ag Apparatus for compacting permanent magnet powders into pressings
US3469283A (en) * 1966-02-24 1969-09-30 Wolverine Pentronix Powder hopper for powder compacting press
US3561054A (en) * 1968-10-31 1971-02-09 Wolverine Pentronix Powder compacting press
US3689186A (en) * 1969-06-16 1972-09-05 Von Roll Ag Apparatus for manufacturing blocks or the like
US3764244A (en) * 1972-05-30 1973-10-09 D Hurley Apparatus for compacting granular material
US3807913A (en) * 1972-05-19 1974-04-30 Motor Wheel Corp Apparatus for making a brake drum ring compact

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598016A (en) * 1950-04-17 1952-05-27 Hpm Dev Corp Apparatus for hot pressing powdered metals
US3172156A (en) * 1962-09-06 1965-03-09 Cincinnati Shaper Co Compacting press
US3416191A (en) * 1965-03-30 1968-12-17 Deutsche Edelstahlwerke Ag Apparatus for compacting permanent magnet powders into pressings
US3382540A (en) * 1965-11-30 1968-05-14 Philips Corp Press for manufacturing articles from powder material
US3469283A (en) * 1966-02-24 1969-09-30 Wolverine Pentronix Powder hopper for powder compacting press
US3561054A (en) * 1968-10-31 1971-02-09 Wolverine Pentronix Powder compacting press
US3689186A (en) * 1969-06-16 1972-09-05 Von Roll Ag Apparatus for manufacturing blocks or the like
US3807913A (en) * 1972-05-19 1974-04-30 Motor Wheel Corp Apparatus for making a brake drum ring compact
US3764244A (en) * 1972-05-30 1973-10-09 D Hurley Apparatus for compacting granular material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518335A (en) * 1984-03-14 1985-05-21 Allied Corporation Dilatant mold and dilatant molding apparatus
US4708621A (en) * 1985-12-27 1987-11-24 Hawkeye Concrete Products Co. Concrete pipe making machine
US5792484A (en) * 1997-02-19 1998-08-11 Hawkeye Concrete Products Co. Automated feed system for pipe making machine
WO2001091986A1 (en) * 2000-05-30 2001-12-06 Strandwood Molding, Inc. Spring-loaded ejectrors for wood strand molding
US20030047089A1 (en) * 2001-08-31 2003-03-13 Jurgen Hinzpeter Method and apparatus for minimizing the spread of maximumcompression forces in a powder press
US7147820B2 (en) * 2001-08-31 2006-12-12 Fette Gmbh Method and apparatus for minimizing the spread of maximum compression forces in a powder press

Also Published As

Publication number Publication date
IT997817B (it) 1975-12-30
FR2227122A1 (it) 1974-11-22
CS171108B1 (en) 1976-10-31
DE2360957B2 (de) 1978-03-30
DE2360957A1 (de) 1974-11-14
CA1012313A (en) 1977-06-21
BG18244A1 (it) 1974-10-25
FR2227122B1 (it) 1976-10-01
DD110802A5 (it) 1975-01-12
PL90718B1 (it) 1977-01-31
SE394184B (sv) 1977-06-13
DE2360957C3 (de) 1978-11-23
SU573369A1 (ru) 1977-09-25

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