US3664524A - Blank sheet feeding device - Google Patents

Blank sheet feeding device Download PDF

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Publication number
US3664524A
US3664524A US72252A US3664524DA US3664524A US 3664524 A US3664524 A US 3664524A US 72252 A US72252 A US 72252A US 3664524D A US3664524D A US 3664524DA US 3664524 A US3664524 A US 3664524A
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US
United States
Prior art keywords
racks
hot press
sheets
multistage hot
pusher
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
US72252A
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English (en)
Inventor
Toshio Yamauchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meiki Seisakusho KK
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Meiki Seisakusho KK
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Publication date
Application filed by Meiki Seisakusho KK filed Critical Meiki Seisakusho KK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B7/00—Presses characterised by a particular arrangement of the pressing members
    • B30B7/02—Presses characterised by a particular arrangement of the pressing members having several platens arranged one above the other
    • B30B7/023—Feeding or discharging means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations

Definitions

  • Apparatus for feeding sheets to a multistage hot press is characterized by including a plurality of interconnected sheet PP NOJ 72,252 feed racks which are reciprocably carried on a supporting framework for the racks to be horizontally moved in unison [30] Foreign Application Priority Dam relatively to the framework and into and out of multiple stages of a multistage hot press. Movably mounted pusher and P
  • 9v Japan -44/74896 restrainer means are provided for pushing sheets away from locations on rearward portions of the racks to locations on forl 52] U.S.
  • Positioning means in the apparatus includes movable stops for the stops in a given position to restrain sheets UNITED STATES PATENTS disposed on forward portions of the racks to move from the 2,344,923 3/1944 Robinson .2 1 4/1 6.6 racks onto a multistage hot press during horizontal movement 2,728,468 12/1955 Si
  • the present invention relates to a blank sheet feeding device for a multistage hot press, more particularly to a blank sheet feeding device for feeding a plurality of blank sheets simultaneously and for accordingly bringing a multiplicity of blank sheets or a single blank sheet of very large size into accurate position on each hot plate of the press.
  • a hot plate press of large size should be capable of treating in a proper manner not only a board product of large size but also a number of board products of small size on a given hot plate of the press.
  • the prior art is without a feed device which furthermore places two or more relatively small blank sheets accurately in desired positions on each hot plate of a multistage hot press at one time.
  • the present invention serves to provide the last-mentioned feature, while also enabling feed of a relatively large single sheet instead to a given hot plate of the press and accurate positioning of that sheet on the hot plate.
  • blank sheet feeding apparatus for use with a hot press of multistage type, the apparatus comprising a plurality of interconnected sheet feed racks reciprocally carried on a supporting framework for the racks to be moved horizontally moved in unison relatively to the framework and into and out of multiple stages of a multistage hot press.
  • movably mounted pusher and restrainer means are provided for pushing sheets away from locations on rearward portions of the racks to locations on forward portions of the racks, and for occupying a given position wherein to restrain sheets disposed on rearward portions of the racks to move from the racks onto a multistage hot press within multiple stages of the latter during horizontal movement of the racks out of multiple stages of a multistage hot press, and the apparatus also has positioning means including movable stops for the stops in given positions to restrain sheets on forward portions of the racks to move from the racks onto a multistage hot press within multiple stages of the latter during horizontal movement of the racks out of multiple stages of a multistage hot press while the pusher and restrainer means in a given position restrains sheets on rearward portions of the racks to move from the racks onto a multistage hot press within multiple stages of the. latter.
  • a feature of the present invention resides in that blank sheets can be first placed on each of the blank sheet feeding racks exactly in desired position and then placed on the hot plates in the hot press accurately in predetermined position by inserting each of the blank sheet feeding racks holding the blank sheets thereon into the space between two adjacent hot plates.
  • blank sheets, or material to be treated can be placed in a row accurately on a hot plate of each stage according to the present invention.
  • FIG. 1 is a front view showing blank sheet feeding and positioning apparatus interrelated with a multistage hot press
  • FIG. 2 is a plan view corresponding to FIG. 1,
  • FIG. 2A is a detail front view showing a portion of the positioning means which flanks the hot press
  • FIGS. 3 to 7 are views representing stages of the operation of the blank sheet feeding and positioning apparatus illustrated in the preceding figures of the drawing.
  • a multistage hot press 31 is associated with a blank sheet feeding device 32 fed from a blank sheet supply source 33.
  • a pit 34 is provided in the ground between the hot press 31 and the blank sheet supply source 33.
  • An upright framework 2. having four legs is slidably mounted on guide members 35 provided on a base structure (not shown) on top of the pit 34.
  • a skeleton framework 1 of hexahedral shape is fixedly mounted within the upright framework 2 and supported on four piston rod members 36 connected thereto in the bottom portion thereof. Lower ends of the piston rod members 36 are connected to piston members (not shown) in hydraulic cylinders 15, 15a.
  • the framework 1 can be raised and lowered vertically by means of the hydraulic cylinders 15, 15a while guided by the upright framework 2, so as to be held at a desired level.
  • the framework 1 is provided with wheels 3, 3a in the lower portion thereof so as to enable the blank sheet feeding device 32 to be moved toward and away from the hot press 31.
  • a blank sheet feeding rack unit 4 comprising a plurality of racks 40, is rectilinearly movably mounted within the framework 1.
  • Each blank sheet feeding rack 40 includes several rod members 41, notably four in FIG. 2, extending horizontally toward a corresponding stage of the hot press 31 and connected at ends remote from the hot press by means of a support beam 6 so as to form a sort of comb.
  • a number of these comb-like feeding racks 40 are superimposed one above the other and connected together on both sides by means of connecting rods 5, 5a to form integrally the blank sheet feeding rack unit 4.
  • the spacing of these comb-like feeding racks corresponds to that of hot plates within the hot press so that the comb-like feeding racks can be inserted into spaces between hot plates within the hot press when the framework 1 is raised upwardly to achieve proper alignment.
  • the rods 41 in each feeding rack 40 are slidably supported on a lateral support member la on the lefthand end of the framework 1 as viewed in FIG. 1.
  • Wheels 10 are mounted on the connecting rods 5, 5a at the lower ends thereof so as to enable the blank sheet feeding rack unit 4 to be moved horizontally within the framework 1.
  • the connecting rods 5, 5a are connected at the upper ends thereof to endless chains 9, 9a which are entrained around pairs of sprocket wheels 8, 8a mounted on the framework 1 by means of brackets 7, 7a. Therefore, the blank sheet feeding rack unit 4 can be moved horizontally toward and away from the hot press 31 by the action of running the endless chains 9, 9a.
  • a pair of rail members 11, 11a are fixedly mounted within the upright framework 2 in the upper part thereof.
  • a pair of push rods 12, are supported on the rail members 11, 11a by means of rollers 13 and depend from the latter.
  • the push rods 12, 12a can be moved by means of a conventional chain drive or hydraulic jacks, both of which are not shown.
  • Both side push rods 12, 12a are connected together by means of a cross-bar 12b and are provided respectively with pusher fingers 14, 14a which are located to slide along the blank sheet feeding racks 40 in each stage corresponding to each hot plate in the hot press.
  • the blank sheet supply means 33 comprises a support table 17 for supporting a stack of blank sheets, and a pusher rod 16 for pushing an uppermost blank sheet from the pile of blank sheets.
  • the support table 17 is made adjustable such that the upper surface thereof can be raised up to desired level.
  • the pusher rod 16 is reciprocated horizontally by suitable driving means such as an endless chain 16a.
  • the hot press 31 is provided with a cover member 18, multiple stage hot plate supporters 18a, 18b, 18c, 18d, l8e and 18f, and a pair of hydraulic jack means 19, 19a for actuating the hot press.
  • blank sheet positioning means 22A provided on opposite sides of the hot press 31 for use when blank sheets are to be loaded on one or more of the hot plates in a plurality of rows comprises pairs of positioning or blocking bars 22, 22a united with vertical rods 21, 21a which are in turn mounted respectively on a pair of piston rods 20, 20a protruding from a pair of jack means 42, 42a.
  • the blank sheet positioning means 22A to compensate for differences in size of sheets, may be moved in a direction of insertion of the blank sheet into the hot press by suitabledriving means not shown.
  • a stack of blank sheets or material to be treated is placed on the supply table 17 at the blank sheet supply source 33 as shown in FIG. 3.
  • the framework 1 is lowered into the pit 34 such as from the FIG. 1 position until the lower surface of the uppermost blank sheet on the stack becomes flush with the upper surface of the uppermost one of blank sheet feeding racks 41 in the unit 4.
  • the uppermost blank sheet on the supply table 17 then is transferred to the uppermost blank sheet feeding rack by motion of the pusher rod 16 of the blank sheet supply means 33 to the left from the position shown in FIGS. 1 and 2.
  • the framework 1 is raised so as to have pusher rod 16 load a blank sheet on the next upper feeding rack 41.
  • the latter are moved on their respective racks to a desired position by propelling the push rods 12, 12a to the left.
  • the blank sheet feeding rack unit 4 is propelled in a direction shown by an arrowhead A in FIG. 1 by driving lower flights of the pair of endless chains 9, 9a in a direction of the same arrowhead, until the blank sheet comes to a point slightly short of the predetermined position on the hot plate.
  • the pair of vertically depending push rods 12, 12a are propelled in parallel with the blank sheet feeding rack unit 4, as the latter is moved to the left.
  • Blank sheets 23 are loaded on the blank sheet feeding racks 41 in unit 4 from the blank sheet supply means 33 in the same manner as in the case of loading a single blank sheet. Then, the blank sheets 23 on all of the feeding racks are propelled to forward positions as represented in FIG. 4 by action of the pushing rods 12, 12a. Thereafter, the framework 1 will be lowered and the pushing rods 12, 12a retreated.
  • a group of blank sheets 24 are loaded on the feeding racks 41 in unit 4 from the supply means 33 and pushed along the feeding racks 41 accurately to a desired position by means of the pushing rods 12, 12a as represented in FIG. 5.
  • the blank sheet feeding rack unit 4 is inserted into the spaces between hot plates in the hot press and the blank sheet blocking bars or stops 22, 22a are introduced between the blank sheets 23 and 24 by action of the jack means 42, 42a.
  • a pair of blank sheet positioning means 22, 22a are shown in the accompanying drawings, a plurality of pairs of positioning means may be provided, should the number of blank sheets to be placed on the hot plate be increased. As shown in FIG.
  • the pusher fingers 14, 14a are located behind the blank sheet 24 in the same manner as in case of the single blank sheet being placed on a feeding rack 40.
  • the blank sheet feeding rack unit 4 is retracted from the position shown in FIG. 6, blank sheets in a plurality of rows such as the blank sheet 23 and 24 are placed on the hot plates accurately in predetermined position as shown in FIG. 7.
  • the blank sheet feeding device may be used also in the following manner.
  • the blank sheet feeding rack unit 4 in the FIG. 5 position is carrying two blank sheets 23, 24 thereon and being supported on the support members 1a of the framework 1 at the forward ends of the feeding racks 41, and then is inserted into the hot press to a desired position, all of the blank sheet positioning bars 22, 22a are introduced simultaneously between blank sheets 23 and 24 as shown in FIG. 6. From this condition, the feeding rack unit 4 is retracted and the pusher rods 12, 12a together with pusher fingers 14, 14a are forwardly driven.
  • the blank sheets 23 are blocked by the positioning bars 22, 22a in the predetermined position and the blank sheets 24 are pushed to the left by means of the pusher fingers 14, 14a until they are abutted against the positioning bars 22, 22a. That is to say, two blank sheets 23, 24 will be located on the hot plate with the positioning bars 22 and 22a placed in the center line.
  • off-center loading of the blank sheets may be obviated, leading away from non-uniform loading on stay members of the hot press, broken stays, or finished products having non-uniform thickness or uneven adhesion.
  • the framework 1 may for example instead be fixed in terms of vertical direction and constructed such that the blank sheets may be supplied thereinto in a direction at to that shown in FIG. 1. If a blank sheet is inserted into the feeding racks from either of opposite lateral sides of the framework 1, in this case, the blank sheet supply means may for example be lifted and lowered.
  • the pushing rods 12, 12a and pusher fingers 14, 14a furthermore serve as retention means for a group of blank sheets during retraction of the blank sheet feeding racks, while the blocking or stop members 22, 22a serve to retain another group of blank sheets, assuming that two blank sheets are being loaded onto a hot plate. Accordingly, two important functions of the fingers 14 and 14a, that is, pushing and retaining of blank sheets, are effectively achieved, and additional blank sheets may be placed on the same hot plates to form rows by the supplemental use of blank sheet positioning means 22A on the hot press.
  • the combination which includes, a plurality of interconnected sheet feed racks reciprocably carried on a supporting framework for said racks to be horizontally moved in unison relatively to said framework and into and out of multiple stages of a multistage hot press, movably mounted pusher and restrainer means for pushing sheets away from locations on rearward portions of said racks to locations on forward portions of said racks, and for occupying a given position wherein to restrain sheets disposed on rearward portions of said racks to move from said racks onto a multistage hot press within multiple stages of the latter during horizontal movement of said racks out of multiple stages of a multistage hot press, and positioning means including movable stops for said stops in a given position to restrain sheets disposed on forward portions of said racks to move from said racks onto a multistage hot preSS within multiple stages of the latter during horizontal movement of said racks out of multiple stages of a multistage hot press while said pusher and restrainer means in given position restrains sheets on rearward portions
  • said pusher and restrainer means includes pusher and restrainer units each associated with a corresponding one of said racks, and carrier structure mounted on said framework for carrying said pusher and restrainer units to move sheets on said racks, said pusher and restrainer units as carried having attainable positions leading inside multiple stages of a multistage hot press thus for said pusher and restrainer units and said stops to restrain sheets on said racks to move onto a multistage hot press within multiple stages of the latter during horizontal movement of said racks out of a multistage hot press.
  • said carrier structure includes a system of sprockets rotatably mounted on said framework and endless chains engaged with said sprockets and with said pusher and restrainer units for carrying said pusher and restrainer units to move sheets on said racks, said pusher and restrainer units as carried having attainable positions leading inside multiple stages of a multistage hot press thus for said pusher and restrainer units and said stops to restrain sheets on said racks to move onto a multistage hot press within multiple stages of the latter during horizontal movement of said racks out of a multistage hot press.
  • said framework carries said pusher and restrainer means and is vertically movably carried for aligning said racks horizontally with multiple stages of a multistage hot press and for said pusher and restrainer means as carried to move sheets on said racks and have attainable positions leading inside multiple stages of a multistage hot press thus for said pusher and restrainer means and said stops to restrain sheets on said racks to move onto a multistage hot press within multiple stages of the latter during horizontal movement of said racks out of a multistage hot press.
  • the combination as set forth in claim 5 having sheet stack elevating and horizontal feed means for elevating a stack of sheets and feeding sheets generally horizontally ofi the top of the stack onto successive ones of said racks presented to said sheet stack elevating and horizontal feed means in corresponding vertical positions of said vertically movably carried framework.
  • said positioning means includes a pair of stops for each of a plurality of stages of a multistage hot press for each pair of said stops to be moved into a stage of a multistage hot press and engage opposite end portions of the rearward edge of a sheet forward on one of said racks for restraining a sheet to move onto a multistage hot press during horizontal movement of said rack away from a stage of a multistage h ot p ress.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Press Drives And Press Lines (AREA)
US72252A 1969-09-19 1970-09-15 Blank sheet feeding device Expired - Lifetime US3664524A (en)

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Application Number Priority Date Filing Date Title
JP7489669 1969-09-19

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DE (1) DE2046054B2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810730A (en) * 1971-06-11 1974-05-14 Motala Ab System for feeding particle slabs resting on a flexible support surface to and from multi-layer presses
US4042125A (en) * 1974-10-23 1977-08-16 Defibrator Ab Method and apparatus for stacking and feeding blanks to a tiered multi-opening press for the production of pressed board
US4412801A (en) * 1980-05-02 1983-11-01 G. Siempelkamp Gmbh & Co. Pressed-board plant with multilevel press
US4478673A (en) * 1981-11-05 1984-10-23 Maschinenfabrik Lauffer Gmbh & Co. Kg. Pressing apparatus with multi-platen or tiered presses
US5826501A (en) * 1996-05-22 1998-10-27 Sunds Defibrator Industries Ab System at a multi-stage press

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112045795A (zh) * 2020-09-10 2020-12-08 漳州鑫华成机械制造有限公司 一种全自动热压生产线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739478A (en) * 1901-06-06 1903-09-22 Charles F Elmes Oil-cake-forming apparatus.
US2344923A (en) * 1939-09-02 1944-03-21 Thomas R Robinson Loading and unloading device
US2599693A (en) * 1948-04-10 1952-06-10 Chapman Forest Utilization Inc Press loader and shutter
US2728468A (en) * 1951-06-15 1955-12-27 Siempelkamp Eugen Device for feeding and discharging presses
US3389652A (en) * 1965-03-12 1968-06-25 Siempelkamp Gmbh & Co Apparatus for the charging of multiplaten presses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739478A (en) * 1901-06-06 1903-09-22 Charles F Elmes Oil-cake-forming apparatus.
US2344923A (en) * 1939-09-02 1944-03-21 Thomas R Robinson Loading and unloading device
US2599693A (en) * 1948-04-10 1952-06-10 Chapman Forest Utilization Inc Press loader and shutter
US2728468A (en) * 1951-06-15 1955-12-27 Siempelkamp Eugen Device for feeding and discharging presses
US3389652A (en) * 1965-03-12 1968-06-25 Siempelkamp Gmbh & Co Apparatus for the charging of multiplaten presses

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810730A (en) * 1971-06-11 1974-05-14 Motala Ab System for feeding particle slabs resting on a flexible support surface to and from multi-layer presses
US4042125A (en) * 1974-10-23 1977-08-16 Defibrator Ab Method and apparatus for stacking and feeding blanks to a tiered multi-opening press for the production of pressed board
US4412801A (en) * 1980-05-02 1983-11-01 G. Siempelkamp Gmbh & Co. Pressed-board plant with multilevel press
US4478673A (en) * 1981-11-05 1984-10-23 Maschinenfabrik Lauffer Gmbh & Co. Kg. Pressing apparatus with multi-platen or tiered presses
US5826501A (en) * 1996-05-22 1998-10-27 Sunds Defibrator Industries Ab System at a multi-stage press

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Publication number Publication date
DE2046054C3 (de) 1979-03-15
DE2046054B2 (de) 1978-06-29
DE2046054A1 (de) 1971-04-01

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