DE1767686A1 - Door construction for the sealing closure of the inlet opening of a room to be treated and receiving objects on a conveyor belt - Google Patents

Description

libbey-Owens-Ford Glass Company 811 Madison Avenue, Toledo, Ohio, U.S.A.

Door construction for sealingly closing the inlet opening of a to be treated, on a conveyor track conveyed objects receiving space

For this application, priority is given to the corresponding US patent application Serial Uo. 645 671 of June 13 Used in 1967.

Me invention relates to a door construction for sealingly closing the inlet opening of a material to be treated and conveyed on a conveyor track Objects receiving £ aumes, and preferably one of the vacuum ovens used to treat glass panes.

Such door constructions are in the most varied Embodiments known. In the case of a vacuum or low pressure furnace, in which the door is arranged in a vacuum lock, it is necessary to open and Closing the door required pivoting space to keep a minimum so that the volume of the vacuum lock remains as small as possible, reducing the size of the Vacuum pumps can be reduced.

109839/1325

BATH ORIGINAL For dot orders, the * fee schedule of the de. ** *

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Another requirement that arises, for example, with vacuum furnaces for processing glass panes, consists in bringing the conveyor element required in the vacuum lock right up to the inlet opening, thus a perfect promotion of αer glass panes is possible. The glass panes are entered into the vacuum lock in succession, so that the door

W must be opened and closed every time a disk is moved into the furnace through the inlet port. The door structure must therefore be so designed and arranged that it does not obstruct the aneenließenden to the äinlaßöffnung area at its opening and closing movement, and in that also the ^v required seal must also be so configured and arranged as to a possible to the repeated door movements subject to minor wear. It is also essential that im

λ interest in mass production for the opening and Closing movement required time kept as short as possible will.

The registration is based on the task of a door construction to create that meets all the aforementioned conditions, that is, a fast one with reliable function and easy, as friction-free operation as possible, which brings the I funding organ up to immediately the inlet opening allows, and the least possible

109839/13 2 5

ORIGINAL

Wear of the required seal guaranteed.

J) This task is achieved according to the invention in that the door structure has a connection field, which has a central, preferably perpendicular to the conveying direction, pivotable by a drive device on a quarter circle, the connection field rotatably accommodating the corners, preferably the lower corners , Λ of the closure field are guided by guide rollers directed parallel to the axis and engaging perpendicularly to each other in j? Uehrungsorgane, and that on the wall having the inlet opening a sealing contact of the closure field on the wall, in and out of engagement with the closure! Eld pivotable .anpreßvorrichtungen are provided.

A further feature of the invention is that the side of the closure panel facing the inlet opening has a circumferential device, for example an O-ring, and that the guide member associated with the inlet opening is under the action of tension springs lifting off the inlet opening.

Further preferred execution forms result from hay open claims *

BAD ORIGINAL

The accompanying drawings show an example embodiment of the invention, and it means:

Fig. 1 perspective illustration of the invention

with the inlet opening closed by the door,

Pig. 2 One-line representation of the seal arranged on the door,

Pig. 3 Partial representation of the invention in plan view with γ door * drawn in dash-dotted lines.

Mg «4. Presentation of the contact form for the

sealing system of the door at the inlet opening,

Fig. 5 to 7 schematic representation in g # «if Fig. 1 under supervision at

fig, δ Barstellumg g.eeii fig. 7 to «* in. make

"Mein-den fig., - dangest # 111« flrkoaatriiiiitieii 'l »« «41iJKt ¥ ers; ehluif eld 15 * 4a» mtt eia ^ a? FiaadiieötüiHig IS. A «sf _; » - atatt-iati is also «im © * - i © tif »BgafwrieWimf. 1? shown to« Public «ni sohliess @ ia eier Τϋί» mA tjy n 21 _f -dureh die ύ® & YeF & ehlBßf el® 'Ij. in #I

BADORiGlNAL

System on the furnace wall having the inlet opening 19 23 is pressed. The closure field 13 is dimensioned so that it can completely close the inlet opening 19; possibly however, it can also be designed so that it only closes off part of the outlet opening.

The closure panel 13 consists of a rectangular plate 25 made of a suitable material. In the middle of the closure field fl 13, a vertical, square channel 27 is attached, for example by S-welding; To increase the rigidity of the closure panel plate 25, transverse ribs 29 are arranged on both sides of the channel 27 and are attached to the rear side of the plate. The ribs 29 form the bearing surface for the pressure piece 31 of the pressing devices 21. The transverse ribs 29 are connected to one another by metal sheets 32. To operate the door, ie to open and close it, an axis 33 is received in the channel 27, on which the locking field 13 is rotatably received by the bearings Λ 35,

How iig. 2 shows, the seal consists of an O-ring 30 fastened to the circumference of the plate 25, which O-ring 30 is held between strips fastened to the plate 25 and which are oriented conically to one another. The actuating device 17 for opening and closing the door consists of two arms 43 »44» which engage on both ends of the axis 33. The free ^v Sude .d. Of the lower arm 44 is on a pivot pin 4> 5 ''

109839/13 25

attached, which is received in the bottom 47 of the furnace in a thrust bearing. The free inde of the upper arm 43 is attached to a pivot pin 55 which is supported in the ceiling 55 of the furnace by a bearing 56. To actuate the pivot pin 53, two mutually parallel flanges 57 are attached to its ian.de according to FIG Quarter-arc is moved. The guide members 61 are provided for guiding the closure panel 13 during its opening and closing movement. On the lower .tick of the closure field 13 downwardly directed rollers 55 »56» which according to Pig. 1 and 3 are arranged on the lowermost ribs 29. The guide roller 65 is provided near the wall 23 below the inlet opening 19 in an upwardly open guide channel 67, while a second guide channel 68 is arranged in the wall perpendicular to the wall 23 to accommodate the guide roller 66 when the door is open.

To prevent wear of the seal 15, 3.9 and to facilitate the movement of the Yersehlußfeldes 13, the guide channel. 67 provided with a device 69 which pushes off it during the movement of Verschlußfeläes 13 from the surface of the wall 23rd

109839/1325 - 7 -

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According to FIG. 3, the guide channel 67 for receiving the guide groove 65 is open at the top; its length is slightly more than half of the locking field 13. The front wall 71 of the guide channel 67 extends almost over the entire length of the locking field 13. The device 69 consists of two parts protruding longitudinally from the ends of the guide channel and of two upright supports 75 which are fastened to the sole 4-7 and are arranged near the ends of the guide channel 67. Tension springs are fastened to the supports 75 and the part 73. which push the guide channel 67 off the. »and 23. To adjust the distance over which the Fiaartuigskanal 67 is adjusted under the influence of the springs 76, a adjustment screw 79 is screwed through the support 75, which is provided against an aa de® guide channel 67 AoscMlag;., 81 aiiiegi · Zmtt, Establishing the setting of the liiistellsctoratAe '13: i & $ a «f ole a lock nut 83 scraped, which siöh against the surface e of the support 75 is placed * .. "-..- - ■" ■ - ■■ - "■ -.-. '. ■■■', ■ '._ '" r- "■■ _: ■ -". '"." ■ ._, .'.- ■■

; 21 consists of a plurality of the longitudinal »eiteii of Verschlmöfeldes \ -j3 arranged _fi mutually equal Sp & imeinheiten B% Jjie te 4 aargestellte Sinheit. 85; tested from a Spaanai «» 8t> the aii at one end

äer wall 23 is hinged. The free flow AÄtts ST i &% _: with an AnsoMagfiatte; 91 verse » _t

> 8-

which, as described above, rests against the bearing surface of the rib 29. For pivoting the arm 87 a linkage 92 is provided, which consists of an extension joint 93 »93a. One end of part 93 of the extensor joint is hinged to the free end of the tension arm 87, while one end of the part 93 a of the extensor joint on a Drive shaft 94 is attached, so that the part 93a executes a buckling movement with the rotary movement of the shaft 94. A gear 95 is mounted on the drive shaft 94 so that when rotated clockwise according to Pig. 4th the stop attached to the end of the clamping arm 87 moves in the direction towards the closure panel 13. To the rotary drive of the gear 95, a toothed rack 97 which meshes with it is provided. The rack 97 is reciprocated by a piston-cylinder arrangement 99, 101.

In the figures 5 to 8 different positions are shown which the closure panel 13 assumes during its actuation. Fig. 5 shows the closure panel 13 in the open State in which the inlet opening 19 is completely free. The guide roller 66 is held in the guide channel 68, while the guide roller 65 hangs freely. Furthermore, the clamping units 85 are in this position Engagement with the closure panel 13 'while the spring-loaded guide channel 67 by the tension springs 76 from the Wall 23 is held away.

1098 39/1325

BATH ORIGINAL

To close the closure panel 13, the drive device 17 "is actuated so that the drive rod 59 is adjusted in the longitudinal direction. The adjustment of the drive rod 59 is transmitted via the links 57 to the pivot pin so that it is rotated and the arms 43" are pivoted with it As a result, the closure panel is pivoted from the position according to Pig. 5 through the position according to Pig. 6 into the position according to Pig. 7. In the position according to FIG Axis 33 by pivoting the arms 43 and 44, the locking panel 13 is guided with the aid of the guide channel 67, while the roller 66 is released from the guide channel 68. A further pivoting movement of the arms 43 and 44 causes the locking panel 13 to be moved to a position close to and parallel to the wall 23. In this position, the closure panel 13, as illustrated in Figure 7, is guided by the guide channel 6 which is acted on to the outside 7 held away from the wall 23. In order to press the closure panel 13 securely against the wall 23, the pressing devices 21 are actuated, the rack 99 being extended, the gear 95 rotated, and the stops 91 provided at the ends of the tensioning arms 87 against the closure panel. 13 are pressed. As a result, the seal 15 or 39 of the closure panel 13 is pressed against the wall 23, so that the vacuum is maintained in the furnace

109839/1325 _{BAD 0RIG | NAL}

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The adjustment of the closure field 13 by the tensioning arms 37 takes place against the action of the tension springs 76.

To open the closure panel 13, the pressure • directions 85 released by opposing actuation of the rack 97 »with the tensioning arms 87 disengaged be pivoted with the closure panel 13 »through the

^ spring-loaded guide channel 67 removed from wall 23 is so that the seals 15, 39 loosen. The closure panel 13 can then be in its open position move by moving the arms 43 and 44 counterclockwise as shown in FIG to be turned around. Since the guide knuckle 67 is lifted off the wall 23, the adjustment of the takes place Closure panel 13 without wear or damage to the Seals 15 or 39 · In addition, the door comes loose of the vacuum prevailing in the oven by itself. The closure panel 13 is adjusted essentially along the wall 23

™ and not pivoted outwards. This way is a Minimum of swivel space for the Verechlußfeld 13 required, so that the arrangement of conveyors and other associated equipment near the passage opening 19 is possible.

109839/1325 ^BAD original

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Claims (6)

- 11 - Claims 1. Door construction for sealing the Inlet opening of one to be treated on a conveyor track conveyed objects receiving space, preferably one for the treatment of glass panes serving vacuum furnace, d a d u r c * h g e k e η η ζ e i c h η e t, ^ that the door structure has a locking field (13), the one in the middle, preferably perpendicular to the conveying direction, by a drive device (17) pivotable on a quarter circle, the shutter field (13) rotatably receiving axis (33) that the corners, preferably the lower corners, of the closure panel (13) by parallel to the axis (33) directed, in perpendicular to each other guide members (61) engaging guide rollers (65,66) are guided, and that on the inlet opening (19) having f Wall (23) a sealing abutment of the closure panel (13) on the wall (23), in and out of engagement with pivotable pressing devices (21) are provided for the closure panel. 2. Door construction according to claim 1, characterized in that that the side of the closure panel (13) facing the inlet opening (19) has a circumferential seal, for example an O-ring (39), and that the , 1098397 1325 ORIGINAL BATHROOM - 12 - "Inlet opening (19) associated guide member (61) it is under the action of tension springs (76) lifting off the inlet opening (19). 3. Door construction according to claim 1 and 2, characterized in that on the back of the closure panel (13) the axis of rotation (33) in store (35) receiving channel is attached that on the lower End of the axis (33) directed perpendicular to it, with its free end over a pin (45) in a thrust bearing (49) received arm (44) and at the upper end of the axis (33) a perpendicular to it Arm (43) is attached, which at its free end is aligned with the thrust bearing (49), in a bearing (56) received pivot pin (53) which consists of the linkage (57f59) ) Actuating device (17) carries. 4. Door construction according to claim 1 to 3 »characterized in that the guide members (61) for the guide rollers (65,66) from one to üer wall (23) below the inlet opening (19) attached to the top open guide channel (67) and from one in the same plane lying guide channel (68) attached to the furnace wall perpendicular to the wall (23), the length of the guide channels (.67,68) being approximately half the width of the locking field (13) 109839/1325 BATH ORIGINAL and open on their facing ends and are arranged to each other that during the Pivoting movement of the shutter (13) through the Actuating device (17) when a guide roller (65) emerges from its guide channel (67) other guide roller (66) enters its guide channel (68). : 5.! Eür construction according to claim 1 to 4 »thereby marked- ^ shows that the pressing devices (21) consist of a wall having the inlet opening (19) perpendicular to it pivotably received clamping arm (87) and from one on the free end which can be brought into pressure engagement with the land of the closure panel (13) pivoting device (92) on the clamping arm (87) existing, 6. Door construction according to claim 1 to 5, characterized in that that the pivoting device (92) consists of an extension joint (93 »95a), which with its one End engages the tension arm (87) and at its other end carries a gear (95) which is through a arranged on a piston-cylinder arrangement (99, 101) Rack (97) can be actuated. Patent attorney . Seiler and Pfenning 109839/1325