US2842349A - Transfer mechanism for conditioning apparatus - Google Patents

Transfer mechanism for conditioning apparatus Download PDF

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Publication number
US2842349A
US2842349A US592778A US59277856A US2842349A US 2842349 A US2842349 A US 2842349A US 592778 A US592778 A US 592778A US 59277856 A US59277856 A US 59277856A US 2842349 A US2842349 A US 2842349A
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US
United States
Prior art keywords
tray
trays
chamber
outlet
abutments
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
US592778A
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English (en)
Inventor
Harold N Ipsen
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Individual
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Individual
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Filing date
Publication date
Priority to BE558491D priority Critical patent/BE558491A/xx
Application filed by Individual filed Critical Individual
Priority to US592778A priority patent/US2842349A/en
Priority to GB18234/57A priority patent/GB807060A/en
Priority to DEI13353A priority patent/DE1095304B/de
Application granted granted Critical
Publication of US2842349A publication Critical patent/US2842349A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B3/00—Parts or accessories of ovens
    • A21B3/07—Charging or discharging ovens
    • A—HUMAN NECESSITIES
    • A21—BAKING; EDIBLE DOUGHS
    • A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
    • A21B1/00—Bakers' ovens
    • A21B1/42—Bakers' ovens characterised by the baking surfaces moving during the baking
    • A21B1/48—Bakers' ovens characterised by the baking surfaces moving during the baking with surfaces in the form of an endless band
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path on or in trucks, sleds, or containers

Definitions

  • This invention relates to conditioning apparatus in which workpieces carried by work supports are conditioned in an enclosed chamber and then are removed through an opening and moved to a predetermined position outside the chamber.
  • a plurality of work supports are disposed in end to end abutting relation and are pushed endwise step by step through the chamber.
  • the leading support is pushed partially through the outlet opening where it then is moved by a transfer mechanism to the aforesaid predetermined position. Due to aging and similar factors, the sizes of the supports are not uniform and hence the location of the leading support before being transferred varies from support to support.
  • the general object of the invention is to provide, in an apparatus of the above character, a new and improved transfer mechanism which separates the end support from the others so thatthe opening may be closed and also which moves each succeeding work support accurately to the predetermined position regardless of the changing locations of the supports at the time they are engaged by this mechanism.
  • a more detailed object is to form the transfer mechanism as an endless conveyor under the work support and with a projection and to provide the underside of each work support with a plurality of longitudinally spaced abutments so that the projection engages one'of the abutments depending upon the location of the support and then advances the support out of the opening and away from the other supports
  • Another object is to provide the conveyor with a second abutment trailing behind the first so that, after the first projection passes out of engagement with the support, the second projection engages the trailing abutment and advances the support to a predetermined position.
  • Fig. 2 is an enlarged fragmentary sectional along the line 2-2 in Fig. 1.
  • Fig. 3 is a perspective view of a work support.
  • Fig. 4 is an enlarged fragmentary sectional view taken along the line 4--4 in Fig. 2.
  • Fig. 5 is a view similar to Fig. 4 but shows the parts in a different position.
  • Fig. 6 is a fragmentary view of the transfer mechanism.
  • the invention is embodied in a conditioning apparatus which may, as shown in the drawings, be used for heat treating metal workpieces 10.
  • the furnace is formed by a walled enclosure 11 which defines an elongated horizontal treating chamber 12 and a baffle 13, which is composed of a hearth 14, side walls 15 and an arch 16, is disposed within the chamber.
  • the latter is heated by suitable heating tubes 17 extending view taken nitecl States Patent 0 2,842,349 Patented July 8, 195s vertically through the chamber along the sides of the bafiie.
  • the workpieces 10 are carried on trays 23 which, as shown in Fig. 3, are cast grids with longitudinal rails 24 and cross bars 25. This construction permitsthe atmosphere coming up through the holes 22 in the hearth 14 to pass through the holes 26 in the tray and around the work.
  • the work may be carriedby the trays alone in the manner illustrated or, in the case of small workpieces, in wire mesh baskets (not shown) secured to the tops of the trays.
  • the trays are loaded into the furnace through an opening 27 formed in one end wall 28 and controlled by a power operated door 29 and slide along the hearth 14 which thus constitutes a guideway for the trays.
  • Each tray abuts against the tray in front of it so that, as successive trays are loaded through the opening 27, the trays within the furnace are advanced step by step through the heat treating chamber 12.
  • the trays may be pushed along the hearth manually or by a power transfer mechanism 30 such as the one disclosed in my Patent No. 2,681,136.
  • the leading tray Upon each advance of the trays '23, the leading tray is pushed partially through an outlet opening 31 in the other end wall 32 of the furnace to a position shown at A in Fig. 2. In this position, the forward portion of this tray rests on a horizontal platform 33 secured to the end wall 32 and forming a continuation of the hearth 14. As shown in Fig. 2, the platform is formed by two parallel sets of rollers 34 spaced apart laterally so that each set supports one edge portion of a tray. The rollers of each set are journaled between two plates 35 secured to and projecting horizontally from the end wall 32. A door 36 (Fig. 1) moved by a hydraulic actuator 37 slides up and down across the outlet opening to open and close the latter and is in the raised position when the trays 23 are being advanced.
  • an elevator 38 whose platform 39 initially is level with the hearth 14 and the platform 33 and the leading tray 23 projecting through the outlet opening 31 is slid from the platform 33 to the elevator platform 39 (position C in Fig. 2) by a power transfer mechanism 40. With the tray on the elevator platform, the latter is lowered by a hydraulic actuator 41 into a tank 42 of quenching liquid, the tank being disposed next to and below the end wall 32 of the furnace.
  • the space above the quench tank, including a platforms 33 and 39, may be enclosed by a casing 43 so that the atmosphere both within the chamber 12 and above the quenching liquid may be controlled.
  • the elevator platform is raised and the tray is slid out of the casing 43 through a door-controlled opening 44 and onto a platform 45.
  • the present invention contemplates constructing and arranging the transfer mechanism 40 in a novel manner so that it is effective to engage and advance the leading tray 23 even when the trays abut end to end against each other as shown in the drawings and to move this tray out of the opening 31 so the door 36 may be closed. More- 3 over, the mechanism is effective also to advance the tray the exact distance necessary to move it to the position C in spite of the variations of the position A.
  • the transfer mechanism is in the form of an endless conveyor having a horizontal run 46 extending along the platform 33 under the trays 23 and moving in the direction of the advance of the trays (to the right in Fig. 1).
  • the conveyor 40 carries two projections 47 and 48 spaced along the conveyor and the first projection engages one of a plurality of transverse abutments 49 longitudinally spaced along the tray which then is in position A, the abutment which is engaged depending upon the particular disposition of the tray.
  • the projection 47 is effective to move the tray to an intermediate position B (Fig. 2) in which a trailing abutment 50 behind the abutments 49 is forward of the start of the run 46.
  • the second projection 48 engages this trailing abutment 50 and advances the tray to the position C which herein is on the elevator platform 39.
  • the projection 47 may engage successive trays at different points. As a result, the disposition of the tray in the intermediate position B may differ from tray to tray. In spite of this, the second projection 48 engages each tray at the identical point, that is, on the trailing abutment 50, and thus the tray is moved exactly into the position C.
  • the conveyor 40 is in the form of two endless chains 51 disposed in parallel vertical planes with the upper run 46 of each disposed inside of and next to one set of rollers 34 of the platform 33 (see Fig. 2).
  • the chains extend around sprocket wheels 52 (Fig. 4) fast on a horizontal shaft 53 (Fig. 2) which extends transversely across the quenching area and through the plates 35 near the outer ends thereof.
  • the shaft is journaled in the casing 43 and is driven by a motor 54 through a suitable speed reducer 55 and a belt 56.
  • Each chain is looped around a guide 57 (Fig. 4), which is near the outer end of the platform 33 and is supported by a stationary bracket 58 on the latter, and around a second curved guide 59 near the inner end of the platform.
  • the first projections 47 are lugs which, when the conveyor chains 51 are at rest, are below the platform 33 and near the start of the run 46.
  • the second projections 48 are dogs spaced behind the lugs relative to the direction of the chain movement a distance about equal to the length of a tray 23 so that, even though the lugs engage an abutment near the front of the tray, the dogs will be behind the tray as long as the lugs engage the latter.
  • the workpieces are loaded on the trays 23 and the latter are placed in the furnace chamber 12 through the opening 27.
  • a new tray is placed in the furnace and, since those trays inside the chamber abut end to end against each other, these trays are slid along the hearth 14 step by step.
  • the leading tray is pushed part way through the exit opening 31 to the position A, the door 36 being opened for this purpose.
  • the motor 54 is started, either manually or through a suitable automatic timing device, to produce a single cycle of the conveyor 40.
  • the lugs 47 and dogs 48 are disposed along the lower or inactive runs of the chains 51 as shown in Fig. 4.
  • the lugs 47 enter the horizontal run 46 and project up into a pair of the holes 26 in the tray. Whether the lugs project into holes near the front of the tray, near the rear or at an intermediate point depends upon the particular position of the leading tray and, as explained earlier, this in turn depends upon the varying sizes of the trays due to heating and aging.
  • the tray stops in the position B while the chains 51 continue to advance and bring the dogs 48 up against the back of the tray, that is, against the trailing abutment S0.
  • the dogs then push the tray forward to the position C on the elevator platform 39 and then, when the chains reach their starting position, the motor 54 is stopped.
  • the elevator 38 is lowered to immerse the work carried by the tray in the quench tank 42 and, after the elevator is raised back up, the tray is removed through the opening 44.
  • a conditioning apparatus having, in combination, means defining an elongated horizontal conditioning chamber having an outlet opening at one'end thereof, a horizontal guideway disposed within said chamber and extending out through said opening and beyond the chamber, a plurality of work supporting trays supported on said guideway in end to end abutting relation to be pushed endwise step by step along the guideway thereby to move the leading tray partially through said opening, each of said trays having a first abutment adjacent .the trailing edge of the tray and a plurality of second abutments disposed along the underside of the tray in advance of and different distances from thefirst abutment, an endless conveyor having a horizontal run extending along the portion of said guideway outside of said chamber and under said leading tray, means for driving said conveyor to advance said runaway from said opening, a lug on said conveyor and engageable with one of said second abutments to advance said leading tray to a position in which said first abutment is beyond the start of said run, and a projection on said conveyor trailing behind said
  • a conditioning apparatus having, in combination, means defining an elongated horizontal conditioning chamber having an outlet opening at one end thereof, a door selectively operable to close said opening, a horizontal guideway disposed within said chamber and extending out through said opening and beyond the chamber, a plurality of work supporting trays supported on said guideway in end to end abutting relation to be pushed endwise step by step along the guideway thereby to move the leading tray partially through said opening, each of said trays having a plurality of abutments spaced apart longitudi nally of the tray, an endless conveyor having a run extending along a portion of said guideway outside of said chamber and adjacent said abutments, means for driving said conveyor to advance said run away from said opening, and a projection on said conveyor and engageable with one of said abutments to advance said leading tray out of said opening and away from the succeeding trays thereby to permit said door to close the opening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
US592778A 1956-06-21 1956-06-21 Transfer mechanism for conditioning apparatus Expired - Lifetime US2842349A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE558491D BE558491A (cs) 1956-06-21
US592778A US2842349A (en) 1956-06-21 1956-06-21 Transfer mechanism for conditioning apparatus
GB18234/57A GB807060A (en) 1956-06-21 1957-06-07 Transfer apparatus
DEI13353A DE1095304B (de) 1956-06-21 1957-06-13 UEberfuehrungsvorrichtung an einer Behandlungseinrichtung, insbesondere an einem Waermebehandlungsofen fuer metallische Werkstoffe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US592778A US2842349A (en) 1956-06-21 1956-06-21 Transfer mechanism for conditioning apparatus

Publications (1)

Publication Number Publication Date
US2842349A true US2842349A (en) 1958-07-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US592778A Expired - Lifetime US2842349A (en) 1956-06-21 1956-06-21 Transfer mechanism for conditioning apparatus

Country Status (4)

Country Link
US (1) US2842349A (cs)
BE (1) BE558491A (cs)
DE (1) DE1095304B (cs)
GB (1) GB807060A (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059096A (en) * 1960-03-28 1962-10-16 American Pipe & Constr Co In-process butt-welding apparatus
US3537825A (en) * 1967-01-06 1970-11-03 Bristol Mfg Corp Autoclave
US4283369A (en) * 1978-06-30 1981-08-11 Kureha Kagaku Kogyo Kabushiki Kaisha Apparatus for making pitch fiber infusible
US4681616A (en) * 1985-07-15 1987-07-21 Glasstech, Inc. Glass sheet tempering method and furnace
CN102312076A (zh) * 2011-08-19 2012-01-11 上海锦荣矿山机械有限公司 细长钢丝淬火装置
CN114703353A (zh) * 2022-02-12 2022-07-05 刘新宇 一种金属板材热处理用回火炉

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430118C1 (de) * 1984-08-16 1986-01-09 Degussa Ag, 6000 Frankfurt Beschickungsvorrichtung fuer Waermebehandlungsoefen
DE102004020206A1 (de) * 2004-04-22 2005-11-10 Expert Engineering Gmbh Verfahren zum Behandeln von Stranggussstangen oder Stranggussbolzen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB319414A (en) * 1928-06-26 1929-09-26 Hubert Spence Thomas Improvements in or relating to machinery for use in connection with the manufacture of tinplates or sheets and other like plates or sheets
US2713480A (en) * 1950-08-14 1955-07-19 Ruckstahl Alfred Heat treating apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE688851C (de) * 1935-12-25 1940-03-04 Siemens Schuckertwerke Akt Ges Verfahren zum Betrieb von Durchlaufoefen grosser Laenge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB319414A (en) * 1928-06-26 1929-09-26 Hubert Spence Thomas Improvements in or relating to machinery for use in connection with the manufacture of tinplates or sheets and other like plates or sheets
US2713480A (en) * 1950-08-14 1955-07-19 Ruckstahl Alfred Heat treating apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059096A (en) * 1960-03-28 1962-10-16 American Pipe & Constr Co In-process butt-welding apparatus
US3537825A (en) * 1967-01-06 1970-11-03 Bristol Mfg Corp Autoclave
US4283369A (en) * 1978-06-30 1981-08-11 Kureha Kagaku Kogyo Kabushiki Kaisha Apparatus for making pitch fiber infusible
US4681616A (en) * 1985-07-15 1987-07-21 Glasstech, Inc. Glass sheet tempering method and furnace
CN102312076A (zh) * 2011-08-19 2012-01-11 上海锦荣矿山机械有限公司 细长钢丝淬火装置
CN114703353A (zh) * 2022-02-12 2022-07-05 刘新宇 一种金属板材热处理用回火炉

Also Published As

Publication number Publication date
BE558491A (cs)
DE1095304B (de) 1960-12-22
GB807060A (en) 1959-01-07

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