DE3101342A1 - "METHOD FOR PRODUCING GAS-FILLED INSULATING GLASS UNITS AND DEVICE FOR IMPLEMENTING THE METHOD" - Google Patents

Abstract

1. Method of making multiple panes filled with gas, comprising at least two glass sheets (18, 19) connected at their periphery by spacing frame (20) thus defining a space between them, characterised in that a gas other than air is introduced into the space defined by the glass sheets during assembly of the pane, before obturation of the space between the glass sheets.

Description

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description

The invention relates to a method for producing gas-filled insulating glass units from at least two glass panes, which are connected to one another via a spacer frame.

Insulating glass units with a gas filling are manufactured in such a way that after completion of the Insulating glass unit drills the spacer frame, or spacers with corresponding openings from the start used, and the space between the glass panes after the completion of the insulating glass unit fills with gas in a further work step and then closes the openings in the spacer frame. Included At least two holes must be drilled in the spacer frame, one hole for gas filling and a hole for the air to be displaced to exit. Filling the gas into the already completed The insulating glass unit and the subsequent sealing of the openings in the spacer is cumbersome and time consuming. This method is therefore used in the large-scale series production of gas-filled insulating glass units relatively expensive.

The invention is therefore based on the object of a method for the production of gas-filled insulating glass units and devices for carrying out the method for To provide, in which the filling of the gas can be made faster than before, and in which Larger numbers of insulating glass units completed in a shorter time in a largely continuous process can be.

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The object is achieved by a method of the type specified at the beginning, which is characterized in that the filling of the gas or gas mixture during assembly and before the gas-tight sealing of the Insulating glass unit makes in one process stage.

The too. parts of the insulating glass unit to be assembled are placed on a conveyor belt, e.g. consisting of side by side arranged support rollers, transported to an assembly station that can be filled with gas or gas mixtures and there pressed together with the inclusion of the gas. This is preferably done so that a pane of glass on one inclined support and transport wall is transported over to the assembly station. In the assembly station the disc is then acted upon by a vacuum Plate taken over, whereby the glass pane is held by the suction on this plate. the 'Suction plate is preferably box-shaped and has openings on the inner wall through which the in The pane transported into the assembly station is sucked in when the suction plate is pressed against the pane will.

After the suction plate has taken over the pane, it is moved away with the glass pane perpendicular to the transport plane, to enable the second part of the insulating glass unit to be moved into the assembly station. Of the The second part of the insulating glass unit preferably consists of a prefabricated unit made of a pane of glass, to which a spacer frame is glued. Also the other side of the spacer frame that the one on the The suction plate is facing the first pane of glass, is with an adhesive, preferably with butyl rubber,

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coated. When the second part of the insulating glass unit is in the assembly station opposite the first pane is located, gas or a gas mixture is displaced into the gap between the two plates while displacing the air the assembly station. The assembly station is expediently designed as a press, and can so the Press the two parts of the insulating glass unit together in a gas-tight manner while enclosing the insulating gas.

The gas can be blown into the press continuously or intermittently, from top to bottom or also ascending from bottom to top. With the continuous gas supply, the press forms one on all sides closed unit so that gas losses remain as low as possible.

The disk is preferably pressed together in the press by pressing the pane held by the suction plate onto the adhesive-coated spacer frame. After completion of the pressing process, the press is opened again and the gns-filled one produced in this way Insulating glass unit removed from the l'rcssc.

The invention also relates to a device for carrying out the method for producing insulating glass units.

The device consists of a press with two im substantially perpendicular to each other displaceably arranged, box-shaped plates, between which the Parts of the insulating glass units to be connected to one another can be inserted, means for filling the gap of the Press with gas or a gas mixture, and means for removing and / or circulating the excess gas.

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The inventive method is based on the drawings explained in more detail. The details described in connection with the drawings are essential to the invention Parts claimed within the scope of the invention.

From the drawings shows

1 shows a device according to the invention for carrying out the method according to the invention a batch gas filling station,

FIG. 2 shows a cross section through the device according to FIG. 1, along the section line H-II,

3 shows the side view of the device according to FIG. 1 in a simplified representation with retracted Glass pane,

FIG. 4 shows the side view of the device according to FIG. 1 when closed,

5 shows the side view of the device according to FIG. 1 after it has been taken over first in the press imported glass pane,

6 shows the side view of the device according to FIG. 1 with the glass pane inserted into the press and the second part of the insulating glass unit,

FIG. 7 shows the side view of the device according to FIG. 1 during the gas filling process,

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8 shows the side view of the device according to FIG. 1 during the pressing process,

9 shows the side view of the device according to FIG. 1 after the completed ones have been transported away Insulating glass unit,

Fig. 10 shows the gas-filled insulating glass unit removed from the press,

11 shows another device according to the invention for Implementation of the new procedure,

FIG. 12 shows a cross section through the device according to FIG. 11 along the section line XII-XII,

Fig. 13

to 19 the side view of the device according to FIG. 11 in a simplified representation while the parts of the insulating glass unit are being picked up, the gas filling process, the pressing process (Fig. 18) and after the removal of the gas-filled Insulating glass unit from the press,

2o a further device according to the invention with a continuously working gas filling station,

21 shows a cross section through the device according to FIG. 2o along the line XXI-XXI.

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Fig. 1 shows a system or device for the production of insulating glass units according to a batch controlled Method using a press, which is designated as a whole by 1. The press consists of an inclined arranged box-shaped plate 2 and one of these opposite tiltable plate 3. The plates 2 and 3 are connected to one another via a swivel joint 4, which is shown in phantom in FIG. the Plates 2 and 3 are also connected via at least one pressure cylinder 5, via which the two plates can be pressed together. If desired, the movably arranged plate 3 can still go through additional pressure cylinder 6 to increase the distance of the plates 2, 5 are displaced laterally from one another on a guide 7o of the fitting 71.

The plate 2 of the press is box-shaped with a cavity 74 and supports 76 and equipped on the rear with a feed nozzle 7 for the supply of compressed air. The supply of the compressed air is shown by an arrow 72 (, VgT. Fig. 2). The front working wall 8 arranged opposite the rear wall 73 is equipped with openings 9 for the passage of compressed air into the gap 1o of the press 1. When the compressed air is switched on, the air exiting through the openings 9 forms an air cushion behind the disk 19 (18) supported on the front working wall 8 of the plate 2.

The plate 3, which is arranged approximately vertically in the starting position of the press 1, is also preferably box-shaped, so that a cavity with supports 75 is also formed in the interior of the plate 3. The plate 3 is with a Suction nozzle 13 is provided, which connects the cavity 12 of the plate with an induced draft fan 14. The front working wall

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the box-shaped plate 3 is equipped with suction openings 16. The suction openings 16 serve to remove the glass sheet 18 from its original transport position by suction to take over and hold in their position.

The openings 9 in the preferably box-shaped Plate 2 are used to form an air cushion between the glass pane 18 or 19 and the front working wall 8, so as to allow the glass pane 18 or 19 or the finished insulating glass unit to slide during feeding and removal to enable. On the glass 19 is a spacer

frame 2o glued on by means of a conventional adhesive. Of the Spacer frame 2o is preferably a hollow profile frame designed.

A gas filling bar 22 is arranged above the gap 1o of the press 1 and can be displaced into the gap 1o. The gas filling bar 22 is preferably made somewhat narrower than the Gesanitbrei te of the insulating glass units to be produced, so that the press 1 can also be closed when the gas filling bar is in the gap 1o of the press 1. The gas filling bar 22 has outlet openings 23 on its underside, from which the gas or gas mixture fed to the gas filling bar on the opposite side via supply lines 24 can exit. The gas filling bar 22 is divided into a number of chambers 47 ′ to 47 ′ ¹¹ ″ by partition walls 59. A length measuring device (sensor 35) connected upstream of the press measures the length of the glass sheet when a glass sheet 18, 19 is inserted into the press, and accordingly only as many of the chambers 47 are exposed to the gas as are required in the individual case. In this way, any gas loss is reduced to a minimum.

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The gas filling bar 22 is equipped above the outlet openings 23 with sealing lips 25, 26, which the Seal the gap 1o of the press at the top. The sealing lip 25 is on the side wall facing the plate 2 of the gas filling bar attached below. The sealing lip 25 also serves as anti-slip protection for the gas filler bar the surface of the front working wall 8 of the plate 2. The sealing lip 26 is on the plate 3 facing Side wall of the gas filling bar 22 resiliently hinged at the top, the linden of the sealing lip on the front working wall the plate 3 rests. When the press is closed, the sealing lip 26, which is preferably made of dimensionally stable plastic with an elastic outer edge area, moved upwards so that the proper closing of the Press is made possible. The gas filling bar 22 is connected via the pipes 24 to a gas supply source 27 (Pig · 7). The gas filling bar 22 can with the extracted excess gas in the circulation principle with additional Gas mixture or additional gas are supplied. The gas flow can, however, also flow directly through the chambers 47 '- 47' "''" '. The gas filling bar 22 is over an elevator device hinged laterally to the ends of the gas filler bar 22, in its vertical direction postponed. The elevator device is designated as a whole by 11. In the embodiment according to FIG. 1, the elevator device is 11 e.g. designed as a chain drive.

Below the plates 2 and 3 of the press 1 is a suction box 28 arranged, which seals the gap 1o of the press downwards. The suction box 28 consists of one Base plate 29, above the one with slot openings 3o equipped cover plate 31 is arranged. The suction box 28 is connected to a suction fan 33 via a pipe 32 connected, the excess gas via the suction

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box 28 from the gap 1o of the press 1 sucks. The side walls of the suction box 28 are sealed against the plates 2 and 3 of the press, the seal 34 is designed to be flexible between the suction box 28 and the plate 3, since the plate 3 when the press is closed is moved in the direction of the plate 2.

1 to 9 show an embodiment of the invention Procedure illustrated. A transport and support plate 36 is arranged in front of the press 1, which is slightly inclined. The inclination of the transport and support plate corresponds to the inclination of the plate 2 of the press 1. The transport and support plate 36 is preferred designed as a box, the cavity 37 of which via a pipe 38 with a fan 39 for the supply connected by compressed air. The compressed air escapes through openings 41 in the front working wall 4o, that of the glass pane 18, 19 facing. As a result, between the glass pane 18, 19 and the front working wall 4o, a Air cushions formed to enable the sliding transport of the glass sheet 18, 19 on the working wall. That The fan 39 preferably simultaneously serves as a compressed air supply source for the plate 2 via the supply pipe 69 the press 1.

The support plates 36 and 42 in front of and behind the press 1 can also be equipped with conventional castors instead of an air cushion 6o be provided, as shown in FIG. 1 for the support plate 42. Also the removal and support wall 42 is arranged inclined, the inclination corresponding to the inclination of the plate 2 of the press 1.

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Below the support and transport plates 36, 2, 42 are at the level of the base plates of these facilities support and Transport rollers 43 are provided. The support rollers 43 protrude over the front working wall of the support wall 36, plate 2 or support wall 42 addition. The support rollers 43 are arranged so close to one another that the insulating glass unit or the parts of the insulating glass unit can be transported on these rollers, these rollers being driven The support rollers 43 on the transport and support plates are each in a drive bearing 44 that is attached to the base plate the transport and .stützplatte is arranged, stored. At the lower end of the plate 3 at the level of the base plate, support elements 45 are arranged as a lower support for the disc 18. The support elements are arranged in their pitch Io so that when the plates 2 and 3 are moved together come to rest between the support rollers.

In FIGS. 3 to 9, the individual process steps for the Her :; division of the] sol ierglaseinlie it shown. 3 shows the press from the side with a glass pane 18 which is supported on the inclined plate 2 and which has been transported into the press from the front up to a stop. At the lower end of the plate 2, the disk 18 is supported and transported by the support rollers 43. Fig. 4 shows the closed arrangement. The press 1 is closed by moving the plate 3 up to the glass pane 18. After the press is closed in this way, the plate 3 is subjected to negative pressure, as a result of which the pane 18 is sucked onto the front working wall 15 of the plate 3, after the glass pane 18 is sucked by the plate 3, the plate 3 is pivoted away from the plate 2 via the swivel joint 4 (FIG. 5), and the gap 1o is formed. Then the transport and support wall upstream of the press is used

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the glass pane 19 with the spacer frame glued on it 2o is transported into the press up to the stop (not shown) and the gas filling bar 22 is lowered (Fig. 6). The end faces of the spacer frame 2o are coated with an adhesive 21. A butyl rubber adhesive is particularly suitable, which is particularly has good adhesive properties.

As soon as the glass pane 19 is at the stop in the press 1 and is therefore exactly opposite the glass pane 18, the transport system is stopped and the supply of the gas or gas mixture 46 via the gas filling bar is switched on. The gas or gas mixture 46 preferably consists of a gas with high insulating properties, for example noble gas such as helium, neon or argon, carbon dioxide, nitrogen, carbon-fluorine compounds such as freons etc. The excess gas is sucked off via the pipe 32 arranged on the suction box 28 fed back into the gas filling bar 22 via the fan 33 and the pipeline 24, if this is desired. On the inlet and outlet side, the gap 1o can optionally be sealed by means of overlapping rubber lips and the like (not shown here). As soon as the gap 1o of the press 1 is filled with the gas 46 (Fig. 7) _f , the plate 3 with the pane 18 is moved up to the spacer frame 2o and the insulating glass unit is pressed (P; Fig. 8) so that the glass panes 18 and 19 are pressed onto the spacer frame 2o coated with adhesive 21 and at the same time the gas 46-filled cavity between the glass panes 18, 19 is sealed. After the insulating glass unit is pressed gas-tight, the press is opened again by removing the plate 3 and the insulating glass

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unit transported out of the gap 1o of the press (Fig. 9). During the pressing (cylinder 5 and 6) of the insulating glass unit, compressed air is supplied to the Plate 2 switched off via valve 77. When the glass sheet 18 is pressed onto the spacer frame 2o, can the negative pressure for the plate 3 can also be switched off via the valve 78 (FIG. 8).

11 and 12 show an embodiment of the device for the production of the gas-filled insulating glass units shown, in which the plate 3 does not perform a tilting movement, but is only moved parallel to the plate 2 on the guide 7o. The angle of inclination of the plate 3 corresponds to the angle of inclination of the plate 2 of the press 1. The upper edge regions 7o of the suction box 28 are preferably designed so that they form an inclined plane that acts as a support surface 7o for the plates 2 and 3 The plate 3 is moved by at least one pressure cylinder 6 arranged at both ends of the plate 3 in the direction moved towards the plate 2 or pushed away from the plate 2 when the press 1 is to be opened. the Printing cylinders 6 are connected on one side to the outer wall 79 of the plate 3 and on the other side to the Device frame attached to suction box 28 via a bracket 8o. The pressure cylinders 6 are preferably pneumatic controlled. The advantage of the device according to FIG. 12 is that the gap 1o between the plates 2 and 3 is smaller and therefore lower gas losses occur when filling the insulating glass unit, since the gas volume in the open press is smaller.

13 to 19 show the manufacture of the insulating glass unit with the device according to FIGS. 11 and 12 shown. FIG. 13 shows the press 1 according to FIG. 11 in a side view with retracted glass sheet 18. In Fig. 14 is the press

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closed and to the plate 3, which is also preferred here is box-shaped, a negative pressure is applied, by means of which the disk 18 is sucked onto the plate 3 will. When the press is opened (see FIG. 15), the glass pane 18 is attached to the plate 3 by the suction effect and stands up on the support elements 45 at the bottom. After opening the press, the second pane of glass is 19 retracted (FIG. 15) and then the gas filling bar 22 lowered into the gap 1o of the press (Fig. 16), up to about the upper edge of the disc 19, where a Sealing through the seal 25 takes place. A spacer frame 2o is again by means of the glass pane 19 an adhesive layer 21 stuck on. As soon as the glass pane 19 lies opposite the glass pane 18, the in the Plate 2 blown compressed air is switched off and the supply of gas 46 via the gas filling bar 22 is switched on. The plate 3 with the glass pane 18 held on the upper surface of the front working wall 15 is then placed pressed against the spacer frame 2o with the cylinders 5 and 6 (p Fig. 1S). By pressing the panes of glass together About the spacer 2o the cavity between the glass panes 18 and 19 sealed gas-tight. After completion of the pressing process, the press is opened again and the finished insulating glass unit moved out of the glass press (see FIG. 19). While the press 1 is opening the gas filling bar 22 pulled up out of the gap 1o of the press. This can also be done with this device via the Line 32 evacuated excess gas 46 via a suction-pressure blower 81 and the line 24 can be returned to the gas filling bar 22. The gas filling bar 22 is only single-chambered here (47) with a feed tube 24 is shown. It goes without saying that a multi-chamber design, e.g. 47 'to 47' "" is possible.

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FIGS. 2o, 31 show a further embodiment of the device for the production of the gas-filled insulating glass units. The press 1 is in this case of a housing

48 enclosed; into the top cover plate 49 of the housing the gas filling bar 5o is preferably used in a stationary manner. The gas filling bar 5o can, however, also pass through the cover plate

49 are passed through, the opening for implementation of the gas filling bar is sealed, e.g. by means of a rubber sleeve. The gas filling bar 5o is via a pipeline 51 and a pipe 52 are connected to the gas supply source 27 via a valve 53. The pipe 51 is in the Device according to FLg. 2o and 21 via a valve 54 and die.Fördereinrichtung 33 with the pipeline 32 for suction of the excess gas from the suction box 28 connected. In this way, what is extracted in the suction box 28 is sucked off Excess insulating gas 46 returned to the gas filling bar 5o. The gas filling bar 5o exists in this device preferably from a one-piece gas bar, from its openings 23 on the underside, preferably continuously Gas flows out in the direction of the gap 1o between plates 2 and 3 of the press. In this way, a gas curtain is formed between the plates 2 and 3. Here too is the plate 3 of the press 1 can be subjected to negative pressure. the Plate 2, however, is also acted upon via the pipe socket 7 with the pressurized filling gas for the Formation of a gas cushion between the glass sheet 18 and the plate 2. This gas cushion has the same function as that Air cushion of the devices described above.

The end faces of the press 1 are sealed here by vertical wall parts, the front side wall through a horizontally or vertically displaceable flap 55 is formed. The flap 55 can also consist of several sliding

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parts exist. The end wall arranged at the outlet of the housing 48 preferably has elastic ones Lips 56 which overlap at their central abutting edges. The lips 56 are therefore elastic, so that the finished insulating glass unit can leave the press or the gas lock without a separate one Opening mechanism for opening this side limit of the housing 48 must be provided.

The gas lock, which is laterally sealed by the sliding flap 55 and the elastic lips 56, is preferred upstream of a pre-lock 57 with an entrance sliding flap 58, in which the transport and support plate is arranged, which together with the support rollers 43 serve to transport the parts of the insulating glass unit. In front of or within the support plate 36, tactile sensors 62 are arranged, which transport them past the support plate 36 Scan glass panes 18, 19. The sensors 62 are used to control the opening and closing mechanism of the Sliding flaps 55 of the main lock or 58 of the pre-lock 57. The pre-lock 57 serves to reduce gas losses, which occur in that the sliding flap of the housing 48 during the conveyance of the parts 18, 19 the insulating glass unit is opened in the press 1. In transit line; behind tlcin housing 48 is a Tr.'insport- and support wall 42 is arranged, which is used to transport away the finished insulating glass unit. Behind the housing 48 is a Exit lock not required because the pressed insulating glass unit no longer has any adhesive surfaces, and can be transported through sealing lips 56. The configuration of the transport and support wall 42 corresponds preferably of the design of the corresponding supporting wall according to FIG. 1.

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The flow direction shown in FIGS. 1, 11 and 2o of the gas or gas mixture from top to bottom can also be reversed if necessary. This is particular advantageous when a heavier gas than air is used to fill the insulating glass unit. In this In this case, the specifically lighter air is completely removed by the heavy insulating gas from the press or the lock pushed out.

The method according to the invention has the further advantage that thus insulating glass units of various dimensions can be filled with insulating gas without the procedure would have to be changed.

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Claims (1)

VE 458 Applicant: Vereinigte Glaswerke GmbH, 51oo Aachen Process for the production of gas-filled insulating glass units and device for implementation of the procedure Claims Process for the production of gas-filled insulating glass units of at least two panes of glass, which along the edge areas over a spacer frame are connected to one another to form a space, characterized that the gas during the assembly or assembly of each other gas-tight connecting panes of glass into the space formed between them. 2. The method according to claim 1, characterized in that the gas-tight sealing of the glass panes (18, 19) with the spacer frame (2o) Pressing the panes onto one another onto the spacer frame provided with an elastic adhesive mass performs in a gas or gas mixture atmosphere. 2 ^{VE 458} 3. The method according to claim 1 or 2, characterized in that the gas-tight sealing of the insulating glass unit by pressing a sheet of glass (18) onto a prefabricated unit made of a sheet of glass (19) with a glued-on spacer frame (2o) in an insulating gas atmosphere. 4. The method according to claims 1 to 3, characterized in that that excess gas is withdrawn from the assembly area and recycled. 5. Device for performing the method according to claims 1 to 4, characterized by a press (1) with two plates (2, 3) that can be moved towards one another, between which the glass panes and the spacer frame (2o) the insulating glass unit can be introduced, means for introducing gas or a gas mixture into the press (1) and means for discharging and / or circulating the gas or the gas mixture. 6. Apparatus according to claim 5, characterized in that the individual insulating glass parts are frontally in the gap (1o) can be introduced into the press. 7. Apparatus according to claim 5 or 6, characterized in that the means for introducing gas or a gas mixture in the press consists of a gas filling bar (22, 5o) which can be connected to a gas source (27). 8. Apparatus according to claim 7, characterized in that the gas feed bar vertically in the open press is displaceable and has gas outlet openings (23) on the underside. 9. Apparatus according to claim 7 or 8, characterized - 3 - VE 4 58 shows that the gas filling bar is divided into several chambers (47 ', 47 "etc.), which are connected with separate supply lines (24) * 1ο. Apparatus according to Claim 9, characterized in that a length measuring device in front of the press (1) (Sensor 35) is provided, through which a corresponding depending on the length of the glass panes Number of chambers (47) of the gas filling bar (22) is acted upon with gas. 11. Device according to one of claims 7 to 1o, characterized in that the gas filling bar (22) above a resiliently mounted sealing lip (26) is articulated on one side of the gas outlet openings (23), which seals the gap (1o) of the press (1) at the top during the gas filling process. 12. Device according to one of claims 7 to 11, characterized in that the gas filling bar (22) is made narrower than the insulating glass unit to be completed. 13. Device according to one of claims 5 to 12, characterized in that the press (1) below of the two plates (2, 3) is sealed with a suction box (28) which is connected via suction pipes (32) can be connected to at least one suction fan (33). 14. Device according to one of claims 5 to 13, characterized in that the press (1) to avoid is sealed from gas losses above, below and to the side of the two plates (2, 3). - 4 - VE 458 15. The device according to claim 14, characterized in " net that the press (1) on the input side with a one-part or multi-part sliding flap (55) and / or sealed on the evacuation side with a seal made of overlapping elastic lips (56) is. 16. The apparatus according to claim 15, characterized in that the opening and closing mechanism of the Sliding flap (55) on the input side by means of the sliding flap (55) arranged in front of the sliding flap (55) and being transported past Disc-scanning feelers. (62) is controllable.