SE201400C1

SE201400C1 -

Info

Publication number: SE201400C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: A Dammers Prioritet begard frcin den 18 februari 1958 (Frankrike) Foreliggande uppfinning hanfOr sig till en anordning for bojning av skivor av i varme mjuknande material, sarskilt glasrutor, som aro varmda till mjukningspunkten, genom pressning Indian en stel konvex mall och ett bojligt element. Inventor: A Dammers Priority was acquired on February 18, 1958 (France). element.

De moderna fordringarna ph sakerhetsglas, sarskilt vindrutor till bilar, innebara former, som icke kunna astadkommas med kanda bOjningsforfaranden. Detta ar sarskilt fallet, da den krata rutan har bade cylindriska och koniska delar samt eventuellt aven sfariska delar. The modern requirements for safety glass, especially windscreens for cars, involve shapes that cannot be achieved with known bending procedures. This is especially the case, as the crate has both cylindrical and conical parts and possibly also spherical parts.

Enligt foreliggande uppfinning anvander man for bojning av rutorna pa detta sOtt en bOjlig pressram, som är fast i sin mellandel I ett faste, vilket star mitt for den stela konvexa mallen, och vid andarna är ansluten till drivorgan, som kunna pressa ramen mot mallen. Denna bojliga ram kan sarskilt besta av tunna bojliga band, vilka aro fasta ledbart i andarna. Dessa band, som aro bojliga i och fOr sig, kunna tack vare den ledbara infastningen underga en mindre forskjutning i fOrhallande till varandra, sa att ramen kan anpassa sig till en stel mall, som har ytor av olika art, exempelvis plana, cylindriska och koniska. According to the present invention, a flexible press frame is used for bending the windows in this way, which is fixed in its intermediate part in a fastener, which is opposite the rigid convex template, and at the ends is connected to drive means which can press the frame against the template. This flexible frame can in particular consist of thin flexible bands, which are fixedly articulated in the spirits. These bands, which are flexible in and of themselves, can, thanks to the articulated attachment, undergo a slight displacement in relation to each other, so that the frame can adapt to a rigid template, which has surfaces of different kinds, for example planar, cylindrical and conical. .

FOr utjamning av det tryck, som utovas ph den skiva, vilken skall b8jas, kunna banden, sarskilt de ldngsta, vara forstdrkta med ett eller flera hjalpband. Dessa hjalpband, vilka fungera som hladfjadrar, kunna glida i sin langdriktning i styrningar och kunna fixeras i dessa ett fOrutbestamt lage. Ramen kan laggas an direkt mot rutan ehuru den lampligen fOrses med ett av ebifast material tillverkat band med samma kontur som den ruta, med vilken det kommer till kontakt. To equalize the pressure exerted on the disc to be bent, the straps, especially the longest ones, can be reinforced with one or more auxiliary straps. These auxiliary straps, which act as load springs, can slide in their longitudinal direction in guides and can be fixed in these a predetermined position. The frame can be applied directly to the window, although it is suitably provided with a strip made of ebifast material with the same contour as the window with which it comes into contact.

I stallet for att Tara sammansatt av ledbart infasta band kan ramen besta av en sluten elastisk ring, som bares av en ledbar enhet svarande mot den krOkning, som skall uppnas. Instead of Tara composed of hinged straps, the frame may consist of a closed elastic ring, which is carried by a hinged unit corresponding to the curvature to be achieved.

Drivorganen for pressning av ramen mot mallen kunna utgOras av pneumatiska eller hydrauliska cylindrar. I en utforingsform aro ramens andar ledbart fasta ph svangbara armar, som aro forbundna med fastet och drivna med pneumatiska eller hydrauliska don. FOr att halla ramen strackt i denna anordning i bOrjan av krokningen anordnas strackfjadrar, som aro insatta mellan de svangbara armarnas och ramens andar. The drive means for pressing the frame against the template can be constituted by pneumatic or hydraulic cylinders. In one embodiment, the spirits of the frame are articulated fixed ph pivotable arms, which are connected to the fastener and driven by pneumatic or hydraulic devices. In order to keep the frame stretched in this device at the beginning of the hooking, tension springs are arranged, which are inserted between the spirits of the pivoting arms and the frame.

Uppfinningen kommer i det fOljande att beskrivas narmare med hanvisning till bifogade ritningar, vilka som exempel visa nagra utforingsformer avsedda for bojning av vertikalt upphangda glasrutor. Fig. 1 ãr en planvy av en rain bestaende av bandjarn. Fig. 2 är en motsvarandeuppifran och visar ra- men saint den mitt fOr densamma staende konvexa mallen. Fig. 3-5 visa detaljer i fastsattningen av ett band ph ramen. Fig. 6 ãr en planvy av en ram bestdende av ett ringformigt bojt ror, av vilket en del visas i snitt i fig. 6a. Fig. 7 ãr en planvy av en bOjningsanordning med ramen enligt fig. 6. Fig. 8 är en planvy av en annan utforingsforrn av en bOjningsanordning med svangbara armar. Fig. 9 är en andvy av anordningen enligt fig. 8. Fig. 10 visar detaljer i bojningsanordningen enligt fig. 8 och 9. The invention will be described in more detail below with reference to the accompanying drawings, which show, by way of example, some embodiments intended for bending vertically suspended glass panes. Fig. 1 is a plan view of a rain consisting of strip iron. Fig. 2 is a corresponding view showing the frame in the center of the convex template standing in front of it. Figs. 3-5 show details in the fastening of a strap ph frame. Fig. 6 is a plan view of a frame consisting of an annular bend tube, a part of which is shown in section in Fig. 6a. Fig. 7 is a plan view of a bending device with the frame according to Fig. 6. Fig. 8 is a plan view of another embodiment of a bending device with pivoting arms. Fig. 9 is a view of the device according to Fig. 8. Fig. 10 shows details of the bending device according to Figs. 8 and 9.

Enligt fig. 1 on. 2 bestar den ram 1, som pressar glasrutan mot den konvexa mallen 2, av bandjarn 4, 5, 6 och 7, vilka aro f8rbundna ledbart med varandra vid andarna 3, 3', 3" och 3" medelst nitar, vilkas huvuden icke 2 aro atdragna mot bandjarnen, sã att tva med varandra sammankopplade bandjarn kunna svanga nagot i forhallande till varandra. Ramen 1 är eventuellt fOrsedd med mellanstycken 8, 9, 10 och 11, vilka ocksâ aro forbundna ledbart med bandjarnea 4 och 5. According to Fig. 1 on. 2, the frame 1, which presses the glass pane against the convex template 2, consists of strip iron 4, 5, 6 and 7, which are articulated to each other at the ends 3, 3 ', 3 "and 3" by means of rivets, the heads of which are not 2 are drawn towards the belt iron, so that two interconnected belt iron can swing somewhat in relation to each other. The frame 1 is optionally provided with intermediate pieces 8, 9, 10 and 11, which are also hingedly connected to the belt rails 4 and 5.

Sasom framgar av fig. 2 finnes pa baksidan av de bagge langa bandjarnen 4 och 5 minst ett och lampligen flera stOdband 12, vilka fungera som plattfjadrar. Dessa stOdband 12 glida styrningar 13, vilka visas narmare i fig. 3. Denna visar ett snitt genom en styrning 13, i vilken stodbandet 12 är glidbart. Styrningen har en skruv 13a med ett klamhuvud 13b, sa att stodbandens 12 rorlighet ken regleras efter onskan. As can be seen from Fig. 2, there are at least one and probably several support straps 12 on the back of the rear long straps 4 and 5, which function as flat springs. These support straps 12 slide guides 13, which are shown in more detail in Fig. 3. This shows a section through a guide 13, in which the support strap 12 is slidable. The guide has a screw 13a with a clamping head 13b, so that the mobility of the support straps 12 is regulated as desired.

Vid bandens 4 och. 5 andar kunna vidare vara anordnade fOrstarkningsorgan 14 och 14', vilka liksom banden 12 glida i styrningar. Dessa fOrstarkningsband 14 och 14' underlatta b8jningen av glasrutans andar, vilka aro i huvudsak plana, sasom visas vid 15 och 15' i fig. 2. At bands 4 and. Furthermore, reinforcing means 14 and 14 'can be provided, which, like the bands 12, slide in guides. These reinforcing bands 14 and 14 'facilitate the bending of the glass pane spirits, which are substantially planar, as shown at 15 and 15' in Fig. 2.

Ramens horn forstarkas med bandformiga stravor 16, 16', 17 och 17', vilka ha till andamal att tjanstgora som underlag vid hi5rnen for ett kontinuerligt band 18 av eldfast material, vilket kommer i kontakt med glasrutan under krOkningen. The horns of the frame are reinforced with strip-shaped straps 16, 16 ', 17 and 17', which have the purpose of serving as a base at the corners for a continuous strip 18 of refractory material, which comes into contact with the glass pane during the curvature.

Fig. 4 och 5 visa monteringen av bandet 18, som uteres av ett bojligt band. 19 och en eldfast bekladnad 20. Bandet 19 fir fastspant mellan platklor 21 och 21', vilka aro fastnitade i ramen vid 22 och 22'. Ramen är vid vardera anden, vid 23 och 24, medelst le-der 25 och 26 fOrbunden med kolvstangen till en tryckluftcylinder 27 och 28, vilken är fast, likaledes medelst leder, yid en tvarbalk 29, som i sin tur ãr fOrbunden med ett centralt taste 30, 30a. Ramen är aven fast vid mitten medelst balken °eh vid det centrala fastet 30, 30a. Ratan F, som skall bojas och her varmts till mjukningspunkten, placeras mellan 2 och lumen 1, varefter dessa delar foras sa fait intill varandra, att mittdelen av det kontinuerliga bojliga bandet 18 befinner sig i kontakt med rutans mittdel och pressar denna mot mallen. Med hjalp air cylindrarna tryckas sedan bandet mot rutan pa omse sidor om den centrala delen, sa att rutan i sin helhet sá smaningom pressas mot mallen. Figs. 4 and 5 show the assembly of the belt 18, which is exited by a flexible belt. 19 and a refractory cladding 20. The band 19 is clamped between plate claws 21 and 21 ', which are riveted in the frame at 22 and 22'. The frame is at each end, at 23 and 24, by means of leads 25 and 26 connected to the piston rod to a compressed air cylinder 27 and 28, which is fixed, likewise by means, to a cross beam 29, which in turn is connected to a central taste 30, 30a. The frame is also fixed at the center by means of the beam and at the central fastening 30, 30a. The ratchet F, which is to be bent and heated here to the softening point, is placed between 2 and the lumen 1, after which these parts are lined so close together that the middle part of the continuous flexible band 18 is in contact with the middle part of the pane and presses it against the template. With the help of the air cylinders, the belt is then pressed against the window on opposite sides of the central part, so that the window in its entirety is gradually pressed against the template.

Fig. 6 och 7 visa en andra utforingsform, i vilken ramen best fir av ett ringformigt ror 31, som i sin mittdel 31a ar forbundet med ett axiellt taste 32. Sasom framgar av fig. 6a bestar detta rOr av en skruvfjader 34 forsedd med en hylsa 33 av varmebestandigt gummi eller av nagot annat lampligt material. Armar 35 och 36 aro f8rbundna med fastet 32. Vid deras fria andar aro ledbart fasta lankar 37 och 38, som i an.dra anden aro fasta pa vertikala stanger 39 och 40. Vid dessa dro ledbart fasta andarna pa kolvstanger 41 och 42, vilkas motsvarande pneumatiska eller hydrauliska cylindrar 43 och 44 aro ledbart fasta i en tvarbalk 45. Ramen 31 bares av de vertikala stangerna 39 och 40 med hjalp av kanda medel, sasom klammor 29a, 39b och 40a, 40b. Den är forsedd med stravor 46, 47, 48 och 49, som installas i anpassning efter konturen pLi den ruta, som skall bojas. Figs. 6 and 7 show a second embodiment, in which the frame consists of an annular tube 31, which in its middle part 31a is connected to an axial key 32. As can be seen from Figs. 6a, this tube consists of a helical spring 34 provided with a sleeve 33 of heat-resistant rubber or of any other suitable material. Arms 35 and 36 are connected to the fastener 32. At their free spirits are articulated fasteners 37 and 38, which in other spirits are attached to vertical rods 39 and 40. At these, the articulated spirits of piston rods 41 and 42, which corresponding pneumatic or hydraulic cylinders 43 and 44 are articulated in a crossbeam 45. The frame 31 is supported by the vertical rods 39 and 40 by means of known means, such as clamps 29a, 39b and 40a, 40b. It is provided with struts 46, 47, 48 and 49, which are installed in alignment with the contour pLi the box to be bent.

Av fig. 7 tram*, hur ramen 31 kan pressas tatt mot den konvexa mallens 50 yta. I vilolaget aro kolvarna inskjutna till bottnen av cylindrarna 43 och 44, sa att den elastiska ramen 31 under inverkan av armarna 37 och 38 praktiskt taget befinner sig i vertikalplanet genom mellandelen 31a. Sedan den glasruta, som skall boj as, har varmts till mjukningspunkten och insatts mellan ramen 31 och formen 50, forskjuter man ramen och mallen mot varandra, sfl att rutan Mires till kontakt med mallens centrala del, varefter man paverkar kolvstangerna 41 och 42. Glasrutan pressas salunda mot mallen 50 under inverkan av det tryck, som Overfores med den elastiska ramen 31. Glasrutan pressas forst mot mallen i mittdelen och sedan successivt ut mot andarna. From Fig. 7 tram *, how the frame 31 can be pressed taken against the surface of the convex template 50. In the resting layer, the pistons are pushed into the bottom of the cylinders 43 and 44, so that the elastic frame 31 under the action of the arms 37 and 38 is practically in the vertical plane through the intermediate part 31a. After the glass pane to be bent has been heated to the softening point and inserted between the frame 31 and the mold 50, the frame and the template are displaced towards each other, so that the pane mires in contact with the central part of the template, after which the piston rods 41 and 42 are affected. is thus pressed against the template 50 under the influence of the pressure which is Overfores with the elastic frame 31. The glass pane is pressed first against the template in the middle part and then successively out towards the spirits.

Fig. 8 visar en utfOringsform, som at sarskilt lamplig fOr framstallning av starkt krOkta glasrutor, exempelvis vindrutor av panoramatyp. Fastet 51 uppbar den vanliga konvexa mallen 52, medan fasteL 53, 53a, som star mitt for fastet 51, uppbar de bagge svangbara armarna 54 och 54', mellan vilkas ytterandar den b8jliga ramen 55 är anordnad. Arinarna 54 och 54' aro ledbart fOrbundna med kolvstanger 56 och 56' i cylindrar 57 och 57', vilka aro ledbart forbundna med en tvarbalk 58, som Sr fast forbunden med fastet 53. Fig. 8 shows an embodiment which is particularly suitable for the production of strongly curved glass panes, for example windscreens of the panoramic type. The fastener 51 carried the usual convex template 52, while the fastener 53, 53a, which is opposite the fastener 51, supported the ram pivotable arms 54 and 54 ', between the outer ends of which the flexible frame 55 is arranged. The grooves 54 and 54 'are hingedly connected to piston rods 56 and 56' in cylinders 57 and 57 ', which are hingedly connected to a cross member 58, which is fixedly connected to the fastener 53.

Den glasruta 59, som skall krokas, Sr placerad mellan de bagge fastena 51 och 53, 53a. The glass pane 59 to be hooked is placed between the ram fasteners 51 and 53, 53a.

Den bojliga ramen 55 Sr fast i ytterandarna av armarna 54 och 54' med hjfilp av strackfjadrar, se fig. 10. I Linden av vardera armen finnes en urtagning 60, i vilken Sr instucken en skruv 61, vilken i sin fria ande uppbar ett ledelement 63. Delta Sr forbundet med ramen 55 med hjalp av en bygel 64. Fjadrarna 65 och 65' Walla ramen strackt under Milan av krokningen och taga sedan upp langdskillnaden mellan bagen och korden under krokningen. Vid slutet av dessa pressas ramen 55 hart medelst bultar 66 och 66' mot glasrutan 59, som i sin tur pressas mot mallen 52. The flexible frame 55 is fastened to the outer ends of the arms 54 and 54 'with the aid of tension springs, see Fig. 10. In the linden of each arm there is a recess 60, in which a screw 61 is inserted, which in its free spirit carried a guide element 63. Delta Sr connected to the frame 55 with the aid of a stirrup 64. The springs 65 and 65 'Walla frame stretched under Milan by the hook and then take up the length difference between the bag and the cord during the hook. At the end of these, the frame 55 is pressed hard by means of bolts 66 and 66 'against the glass pane 59, which in turn is pressed against the template 52.

Uppfinningen är icke begransad till de visade och beskrivna utforingsformerna. • 3 The invention is not limited to the embodiments shown and described. • 3

Claims

Patent claim: 1. Device for bending air sheets of heat-softening material, for example glass panes, by pressing against a rigid convex template, characterized in that it az provided with a flexible press frame, which is fixed in its intermediate part in a fastener, which stands in the middle of the rigid convex template, and at the spirits is connected to drive means, which can press the frame against the template.

2. Device according to claim 1, characterized in that the flexible press frame - at the spirits - is connected to two pivotable arms, which are driven by the drive means.

Device according to claim 1 or 2, characterized in that the drive means consist of pneumatic or hydraulic piston motors.

Device according to any one of the preceding patent claims, characterized in that the flexible press frame consists of thin flexible bands, which are articulated to each other by the spirits.

Device according to claim 4, characterized in that the flexible straps consist of straps.

Device according to claim 5, characterized in that the joint connections of the belt iron consist of rivets, the heads of which are not tightened against the belt iron, so that two interconnected belt iron can move somewhat in relation to each other.

Device according to claim 5, may be characterized in that the strip yarns or some of them are reinforced with metal strips, which serve as leaf springs and are pressed against the strip iron.

Device according to claim 7, characterized in that the reinforcing metal strips are arranged slidably in guides.

Device according to claim 5, characterized in that the strip irons are provided with a refractory strip, which in its contour corresponds to the glass pane and in its intermediate part and its spirits to the strip iron and to the reinforcing strips.

Device according to claim 1, characterized in that the flexible press frame consists of a closed elastic ring.

Device according to claim 10, characterized in that the elastic ring consists of a helical spring which is surrounded by a heat-resistant sleeve.

12. Device according to claim 2, characterized in that springs are inserted between the spirits of the pivoting arms and the spirits of the frame. Request publications: Patents treat United States 2,663,974.