US3027646A - Method of and apparatus for cutting a continuous ribbon of glass into sections - Google Patents

Method of and apparatus for cutting a continuous ribbon of glass into sections Download PDF

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Publication number
US3027646A
US3027646A US77548958A US3027646A US 3027646 A US3027646 A US 3027646A US 77548958 A US77548958 A US 77548958A US 3027646 A US3027646 A US 3027646A
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Prior art keywords
abutment
glass
gauge
cutting
ribbon
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English (en)
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Brichard Edgard
Marchand Jean
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Union des Verreries Mecaniques Belges SA
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Union des Verreries Mecaniques Belges SA
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/037—Controlling or regulating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/307—Combined with preliminary weakener or with nonbreaking cutter
    • Y10T225/321—Preliminary weakener
    • Y10T225/325—With means to apply moment of force to weakened work

Definitions

  • the present invention relates to a method of and an apparatus for the rapid, accurate and, if desired, automatically adjustable cutting of a continuous ribbon of glass, leaving a drawing machine, into sheets of predetermined height and length.
  • the glass is obtained in the form of a continuous ribbon leaving the machine at a predetermined speed.
  • This ribbon is cut into sections, which are in turn cut to smaller dimensions in a subsequent stage. Since this subsequent cutting must be eifected with minimum waste. it is necessary to vary the length of the sections in accordance with the dimensions specified in the orders to be carried out. Therefore, the length of the sections must be periodically varied. The changes in adjustment will be more or less frequent depending upon circumstances. They must always be very rapidly effected and must not take longer than the time required for draving a length of ribbon equal to the length of the section to be obtained.
  • the cutting of the ribbon into sections is generally effected by scoring cutting lines, either manually or mechanically, at intervals equal to the desired length of the sections and cracking off the ribbon along the cutting lines as it is delivered from the machine.
  • the tool is set in operation, for example, by the closing of an electric contact, which is in turn actuated in dependence upon the movement of the glass sheet and so arranged that the section obtained has the required length.
  • the actuation of the said contact takes place, in the first case, when the edge of the glass ribbon has started to drive the cutting apparatus.
  • the displacements of the abutment or abutments of the gauge are measured by means of pointers and graduated scales combined with appropriate movable and fixed parts of the assembly, and they are stopped exactly in the position corresponding to the dimension to be obtained.
  • an appropriate device such as, for example, an electric contact combined with the abutment or abutments of the gauge, which has previously been placed in circuit, from a distance, is closed by the thrust of the edge and produces the starting of the carriage on which the cutting tool is mounted, the abutment of the gauge thereafter being retracted so that it finally automatically takes up its operating position, after removal of the cracked-oif'section.
  • FIGURE 1 is a diagrammatic side elevation of a gauge applied to a Vertical drawing machine and combined with a fixed cutting apparatus
  • FiGURE 2 is a fragmentary front elevational view according to FIGURE 1,
  • FIGURE 3 is a sectional plan view according to FIG- URE 1,
  • FIGURES 4 and S are an end view and a side view of a detail, respectively.
  • FiGURES 6 and 7 are an end view, partly in section, and a side view of the abutment of the gauge, respectively,
  • FIGURE 8 is an end view of one part of the abutment of the gauge, drawn to a larger scale
  • FIGURE 9 is a diagram of the motor and reduction gear set employed for the displacement of the gauge, and also of the device for the operation of the said set,
  • FIGURE 10 shows diagrammatically the electric connections between the various abutments of the gauge and the motor controlling the cutting apparatus
  • FIGURE ll is a diagrammatic side elevation of a gauge applied to a vertical drawing machine and combined with a movable cutting apparatus driven by the glass sheet,
  • FIGURE 12 illustrates the diagrammatically wiring details relating to the subject of FIGURE 11, and
  • FIGURE 13 is a diagrammatic side elevation of a gauge applied to a horizontal drawing machine.
  • a support 3 Fixedly mounted at the top of the frame of a vertical drawing machine (see FIGURES 1 and 2) within which a continuous glass ribbon 2 to be cut into sections rises, is a support 3, to which is attached the base 4 of the gauge according to the invention.
  • the said base may contain the motor and reduction gear set 54 to 61 (see FIGURES 9 and 10), which actuates the gauge and which will hereinafter be described.
  • a vertical column 5 Fixedly mounted on the base 4 is a vertical column 5 consisting, for example, of a hollow section iron formed with a r, if:
  • the movable support 7 is formed with a screwthreaded aperture 15, in which there is engaged a screw 8 fast with an output shaft of the motor and reduction gear set 54 to 61 (FIGURES 9 and 10), as also a recess 16 supporting the lower end of a gauge rod 9 consisting of, for example, a tube.
  • the upper end of the screw 8 is mounted in a bearing 10 fixed on the column 5, while the parallelism of the rod 9 in relation to the column 5 is ensured by at least one sleeve 11 fixed to the rod 9 at the desired point, for example at its upper end, and connected by an arm 12 to a second sleeve 13 adapted to slide with gentle friction on the column 5.
  • a gauge abutment 17a is fixed to the said rod by means of a support 18, which will hereinafter be described.
  • the abutment 17a can be assembled with the support 18 either by welding or by other appropriate means. It has been observed that it is desirable to dispose between the abutment 17a and the support 18 an intermediate device for effecting from a distance an adjustment of the level at which the abutment of the gauge is fixed to the support 18, that is to say, an adjustment of the exact position of the abutment 17:: on the rod 9 in relation to a fixed graduated scale, on which the length to be imparted to the section to be cut from the glass ribbon can be read.
  • the screw 8 may not have to be excessively lengthened, there may be mounted on the rod 9 a plurality of abutments 17a, 17b, etc. at intervals of, for example, one metre.
  • Each has its support 18 fixed to the rod 9, so that it is” possible to obtain the required dimension simply by adjusting the position of the assembly 7, 5 17a, 17b etc. 18 on the column 5 and the screw 8 in such manner that this position corresponds to the fraction of a metre of the said dimension, while only that one of the gauge abutments 17a, 17/), etc. is left in the operative position which corresponds to the whole number of metres of the dimension in question.
  • the support 7 (see FIGURE 2) is provided with a pointer 19, which moves past a graduated scale 29 fast with the column 5 or with the base 4. graduations commence from the bottom of the scale 2% at O, and this scale is therefore so mounted that when the pointer 19 is opposite the the lower edge of the lower gauge abutment 17a is level with the cutting tool.
  • the adjustment to the exact dimension is etfected by means of a disc 21 fixed on the leading screw 8 and divided into a number of graduations which travel past a pointer 22 fast with the base 4 or with the column 5.
  • the graduation will be, for example, as follows:
  • the scale 2G being graduated in centimetres, the screw 8 being threaded with a pitch of one turn per centimetre and the disc 21 being divided into 100 equal divisions, an exact dimension will be rapidly attained by bringing the pointer 19, by rapid rotation of the screw 8, opposite the required number of centimetres and then completing the adjustment by a slow rotation of the screw 8 through a fraction of a turn, so that the pointer 22 is exactly opposite the graduation 21 representing the millimetres and the tenths of millimetres.
  • the support 18 by means of which the abutment 17 of the gauge is fixed to the rod 9 comprises a tubular portion 18 (see FIGURES 4 and formed with a longitudinal slot 18" and provided with two lugs 24, 24" formed with holes 23, 23", in which is fitted a locking bolt 23', permitting of disposing and fixing the support 18 in any position on the rod 9.
  • the support 18 also comprises two tlanges 25', 25" formed with coaxial screwthreaded holes 26, 25 into which is screwed a screwthreaded rod 27 (see FIG- URES 6 and 7) on which is mounted the gauge proper, viz; pivotally mounted on the unthreaded upper and lower ends of the threaded rod 2'7 are, respectively, the horizontal arm 23 of a righ*-angled member 28 assembled with the aid of pins 29 with a plate 3%, and the horizontal arm 36 forming part of the plate 39.
  • the two arms 28 and 36 thus have between them the screwthreaded rod 27 and the two flanges 25', 25" of the support 18, which are engaged with the screw 27.
  • An angle plate 33 is pivotally connected at 52 to the plate 30 and constitutes the abutment 17 of t.e gauge in the case considered.
  • the screwthreaded rod 2-7 is coupled by an universal joint 37 to an operating rod 37' extended to the working platform.
  • an operating rod 37' extended to the working platform.
  • bracket 33 Also fixed to the plate 36' is a bracket 33 having a screwthreaded hole 38 in which there is fitted an justment screw 39 constituting an abutment for the lower arm 49 of the angle plate 33, whereby it is possible to adjust the horizontal position of the latter or its perpendicular position in relation to the glass sheet 2.
  • the angle plate 33 supports two electric switches 41, 42 (FIGURE 7), of which the respective push rods 43, 44 extend downwardly and co-operate with a movable butter 45 suspended from the lower arm 4% of the an le plate 33 by means of two rods 47, 62 which are adapted to slide readily in apertures 48, 49 formed in the arm 4% and in which retaining pins 5 )-51 are fitted.
  • the butler is provided on vits lower face with a strip 46 or other member adapted to come into contact with glass without damaging it.
  • the motor and reduction gear set enclosed in the base 4 and serving to actuate the screw 8 comprises, for example (see FlGURE 9), a reversible electric motor 54 having two speeds and controlled with the aid of a changeover switch 55.
  • This switch 55 has, for example, three push-buttons, one 55a for stopping, one 55b for operation in one direction and one 55c for operation in the other direction.
  • a hand lever 59 is also provided on the switch for engaging the high speed or low speed, and a speed reducing mechanism 6%) is coupled to the motor 54 by the shaft 54a, the latter being provided with a crank 61 for hand actuation.
  • each of the abutments 17a, 17b, 17c etc. and of the abutment 33 of the gauge are connected in parallel by the conductors 17a, 17a", 17b, 17b", 17c, as also through a change-over switch 56 and a relay 57, to the motor 58 actuating a cutting device of known type comprising an oblique rail 63 of adjustable inclination, only the latter being shown in FIGURES 1, 2 and 3 for the sake of simplicity.
  • the change-over switch 55-59 (FIGURE 9) is first set to high speed for operation of the motor 54 in the direction corresponding to the dimension of the sheet to be approached.
  • the displacement of the support 7 and of the members dependent thereon is followed by the movement of the pointer 19 past the scale 21).
  • the motor 54 is set to low speed and the movement is followed on the graduated drum 21 turning opposite the pointer 22.
  • the motor 54 is stopped at the requisite position.
  • the setting to the absolutely accurate dimension can be completed, if desired, by turning the crank 61 by hand.
  • the choice is effected by placing the change-over switch 56 (FIGURE 10) in the position corresponding to the abutment to be employed.
  • the other abutments of the gauge can remain in position, because when the edge of the sheet 2 comes into contact therewith it will rock them without their exerting any action on the cutting device, since the switches 41-42 have been placed out of circuit. Only the selected abutment, connected to the relay 57 of the motor 58 of the cutting device, will control the latter when it comes into contact with the edge of the glass ribbon.
  • the continuous glass ribbon 2 issuing from the drawing machine comes into contact at its upper edge with the strip 46 (FIGURES 6 and 7) of the chosen abutment and lifts this strip and at the same time its support 45, which in turn actuates the corresponding switches 41-42.
  • the latter close the electric circuit 5657-53 and start the cutting device, which scores on the glass ribbon 2 the cutting line along which the glass sheet will be detached from the ribbon.
  • the cutting device in the embodiment shown in FIGS. 1 to 3 is composed of a fixed guide rail 63 which is supported at its ends by adjustable means enabling the longitudinal inclination of the rail to be adjusted to the drawing speed of the glass and the speed on such rail of the carriage which carries the tool for cutting the glass in a known manner and exemplified by the carriage 104 and the tool 130 shown in FIG. 11 of the drawing.
  • the abutment 1733-40 commences to rock about its pivot 52 and progressively rises under the thrust of the glass ribbon.
  • the sheet When the cutting line is complete, the sheet is detached from the glass ribbon by cracking it off along such line of cut and the gauge 17-33-48 automatically falls back under its own weight into the initial horizontal position, its lower arm 41 stopping against the abutment screw 39. In this position, the buffer 4546 has reoccupied its lower position, thus ensuring complete automatic opening of the switches 4142 which it controls.
  • any adjustment or change in dimension requires only actuation of the changeover switch 55 of the motor 5'4 of the gauge, and in exceptional cases a last adjustment of the position of the screw 27 by the transition system 37, 37 and finally in some cases an operation of the reversing switch S6 for changing from one gauge to another.
  • FIGURE 11 illustrates an example of a combination of a vertical gauge according to the present invention with a movable cutting device according to Belgian Patent No. 497,927 in the name of Union des Verreries Mecaniques Belges, S.A.
  • this cutting apparatus comprises a tool carriage 104, 130 mounted on rollers 1116 adapted to move on a horizontal rail 105 parallel to the glass ribbon 2.
  • the rail 105 is fixed at its ends to plates 107 connected at their upper ends by a bar 111 so as to form a frame.
  • the latter is provided with rollers 1115, running on two vertical guide: rails 109 fixed to the base 1.
  • the movable frame 1G5, 107, 111 which normally rests on the base 1, is suspended by two inextensible cables (or chains 115) which are attached at one end to the bar 111 and at the other end to counterweights 114, and extend over the two pulleys 116 keyed on a rigid shaft 123 mounted on two fixed bearings, which are carried, for example, on two columns 1139' fixed to the rails 109.
  • the movable frame 105, 167, 111 supports a rod guided by stationary rollers and supporting, through a sleeve 124, an abutment 113 movable on a pin 125 and co-operating with the edge of the glass ribbon, the sleeve 124 being provided in addition with an arm 127 supporting a pawl 1261l28 co-operating (at one end) with the abutment 113, and (at the other end) with a fixed adjustable abutment 129.
  • the base 4 supporting the system comprising the column 5, the screw 8 with its control mechanism 54-, 55, 59, 6t), 61, the movable support 7 and the rod 9, is fixed to the movable frame 105, 107, 111 and is consequently displaceable and guided therewith on the rails 1119, while being balanced with the said frame by the counterweights 114.
  • a number of sleeves 124-, 124", etc. respectively support on a pin 125, 125", etc. a rocking gauge abutment 113, 113" etc. and a fixed arm 127, 127", etc.
  • the fixed arms support respectively a pawl 126, 126, etc.
  • Each of the abutments 113, 113", etc. of the gauge supports in addition the contacts 41a, 41! etc. and 42a, 4212, etc. respectively, controlling the motor 90 of the cutting apparatus and a third contact 75, 75", etc. controlling the solenoid 70, 70", etc. as illustrated in the diagram of FIGURE 12.
  • rollers 128, 128", etc. co-operate respectively with counter-abutments 129', 129", etc. adjustably mounted on a rod 75 vertically displaceable in an arm 77 fixed to the sleeve 13, and in an arm 78 adjustably secured to a column 79 fixed, for example, by means of a base plate 80 to the support 3 fast with the base 1.
  • the upper end of the colmn 79 is retained with gentle friction in the end 81 of the arm 77, while the lower end of the rod 76 is fast with a screw 82.
  • the rod 76 and consequently the screw 82 are prevented from turning by a key 83 fast with the rod 76 and engaging with gentle friction in the arm 78.
  • the screw 82 engages in a sleeve-shaped nut 84 so spar/nae mounted as to be able to turn but incapable of moving axially between the base plate 80 and an arm 85 adjustably secured to the column 79.
  • a toothed wheel 87 rotatably mounted in a casing 88 fast with the base 4 and rotated by a pinion 89 which is in turn driven by the driving device disposed in the base 4 and actuating the screw 8.
  • the length of the sleeve-shaped nut 84 is slightly greater than the length of the vertical travel of the assembly consisting of the cutting device and the gauge.
  • the system 87, 88, 89, 4 is capable of rising and descending with the gauge and with the cutting device along the guide rails 109, while being balanced by the counterweights 114 and sliding along the sleeve-shaped nut 84 comprising the key 86 without changing the position of the system 82, 7 6, 129.
  • the speed ratio between 89 and 37 and the ratio of the screw pitches between 8 and 7, on the one hand, and 84 and 82, on the other hand are so chosen that when the gauge is adjusted (with the object of changing from one dimension to the other), the rod 9 with the system of abutments 113, etc.
  • the abutments 113, 113", etc. of the gauge are fixed on the rod 9 at regular distances, for example 1 metre apart, as also are the counter-abutments 129', 129" etc. on the rod 76, in such a Way that when the movable cutting device and the gauge dependent thereon are in the inoperative position, the rollers 128 of the pawls 126 are separated from the corresponding counter-abutments 129 on the rod 76 by a distance corresponding to the length of the vertical travel performed by the movable system of the cutting device and of the gauge with the continuous glass sheet 2 while the tool carriage 1G4, 130 is carrying out a transverse cutting stroke.
  • the position of the abutments 113', 113", etc. in such manner that it corresponds exactly to the length of the sections to be cut from the continuous glass sheet 2, it is sufiicient to proceed as follows: if the length of the sections to be obtained, measured in metres, corresponds, for example, to a whole number plus a fraction, the height of the position of the assembly 7-9, 11370, 126-128 is first adjusted in relation to the column 5 with the aid of the control system 4, 8, 54, 55, 59, 60-, 61 and of the graduated scales 20 and 21, so that this position corresponds exactly to the said fraction of a metre.
  • this precise adjustment is accompanied by a corresponding precise automatic adjustment of the position of the rod 76 on which the counter-abutments 129 are mounted.
  • the aid of the device illustrated in FIGURE 12 and hereinafter described only that one of the abutments 113 which corresponds to the whole number of metres of the dimension to be obtained and which must be driven with the entire gauge and the cutting device by the edge of the glass ribbon 2 and must initiate the cutting movement of the device 104, 395, 1417, 111, 133.
  • the other abutments 113 of the gauge (which are closer to the cutting device), they are at the same time rendered inactive with the aid of the device according to FIGURE 12.
  • This device consists of an electromechanical remote control device corresponding to that according to FIGURE 10, but comprising in addition, on each abutment 113, a third contact 75, 75', etc.
  • the circuit of the said abutment 113" is closed by means of the changeover switch 56, while the circuit of the abutment 113' remains open.
  • the edge of the glass ribbon 2 comes into contact with the abutment 113 the latter is pivoted about the pin 12S and thus retracted, since it is in the so-cal-led inoperative position, that is to say, it is not engaged by its pawl 126.
  • the abutments 113 and 113" return into their horizontal position, in which all the contacts 41, 42 and open automatically, so that all the pawls 126 return to their disengaged position under the influence of the springs 74.
  • the new edge of the continuously rising glass ribbon 2 in turn comes into contact successively with the abutmen-ts 113, 113", etc. of the gauge, and the same cycle of operations recom mences.
  • FIGURE 13 which illustrates a gauge for horizontal drawing apparatus
  • the glass sheet 2- being drawn in the horizontal direction, all the elements just enumerated are adapted to this direction. It will be observed that the sheet 2 rests on the roller track 150, that the rod 9 rests on guide rollers 151, and that the abut-merits 113a, 1136, etc. of the gauge supportim the contacts ilo, 42a, 41b, 421), etc. are maintained in the path of the edge of the glass sheet 2 by a spring 152a, 152b, etc. which is adjustably attached on the one hand at 153m, 153b, etc. to an arm; 1540, 154b, etc. fixed to the rod 9.
  • the operation of this gauge is essentially the same as that described in the foregoing with reference to the gauge according to FIGURES l to 11.
  • the rod 76 supporting the countenabutments 129 and its control means such as 32, 83, 84, 86, 87, 89 or the like, as also the column 79 with its means 80, for the axial retention of the nut 84 and the means 73, $3 for the angular retention of the screw 82, instead of being disposed outside the base 4, may be combined with the latter so that the counter-abutments 129 are in close proximity to the pavwls 126, 128 of the gauge.
  • the fixed column 79 may serve as a guide path for any movable system (gauge and cutting device), while serving at the same time as a support for the fixed bearing of the shaft 123 of the device for the suspension and balancing of the movable system, which would permit also of omitting the guide rails Hi9 and the supports 10?.
  • FIGURE 11 gives an illustration which is explanatory rather than constructional and that the construction of the subject of the in vention may be varied in many respects Without departing from the scope of the invention.
  • Apparatus for cutting a sheet of glass issuing from a drawing machine, comprising glass cutting means for cutting such drawn sheet of glass along a given line spaced in back of the advancing end of such sheet, gauge means for measuring the distance at which the glass has advanced beyond said cutting means, and means connected to and controlling the operation of said glass cutting means, said gauge means including a gauge abutment spaced a given distance from the field of operation of said glass cutting means and extending across the path of feed of the advancing end of the glass sheet, a gauge rod extending in substantial parallelism with the direction of feed of the advancing end of the glass sheet, and means supporting said abutment on said gauge rod for movement relative to the latter to enable said abutment to be displaced by the advancing end of the glass sheet without change of its supported position on said gauge rod, said control means being mounted on said movable abutment and operable when the advancing end of the glass sheet engages said abutment to initiate the cutting action of said cutting means, and means for establishing said gauge abutment
  • Glass cutting apparatus as defined in claim 1, including a plurality of gauge abutments mounted in given spaced relation on said gauge rod to indicate different given distances from said cutting means, and control means for said glass cutting means mounted on each of said gauge abutments, and means operative to select the control means for initiating the cutting action of said cutting means on that gauge abutment the distance of which from said cutting means corresponds to the length or" the glass to be cut from the advancing sheet thereof.
  • control means comprises switch means constructed to operate when its associated abutment is displaced by the advancing end of the glass sheet and to automatically return to normal condition during the return movement of such abutment after the cut glass has been removed, a control circuit for said cutting means and including said switch means of all of said abutments, and in which said operative means comprises a selector switch included in said circuit and electrically connected to each of said switch means.
  • said means for rotating said threaded rod includes a variable speed, reversible driving means operatively connected to said threaded rod, and means remote from said threaded rod for selectively controlling the operation of said driving means.
  • said driving means is operative to rotate said threaded rod relatively rapidly for fast adjustment of said support and consequently of said gauge abutment and is operative to rotate said threaded rod relatively slowly for fine adjustment of said support and abutment
  • said index means comprises a scale fixed with relation to said guide device and a cooperating pointer mounted on said support for indicating large adjustments of said abutment, and comprises a scale mounted on said threaded rod and a pointer fixed with relation to said guide device for indicating fine adjustmerits of said abutment
  • said abutment includes means enabling said abutment to oppose displacement thereof by the advancing end of the glass sheet with a controlled given resistance.
  • control means includes a control circuit for said cutting means, and switch means mounted on said abutment and included in said circuit, bumper means carried by said abutment and disposed between said switch means and the advancing end of the glass sheet, said bumper means being operable by such advancing end of the glass sheet to actuate said switch. means before displacement of the body of said abutment by such glass sheet.
  • said means for adjustably supporting said abutment on said gauge rod comprises a supporting member connected to said gauge rod, a threaded rod threadedly engaging said supporting member and carrying said abutment, and an elongated control member opcratively connected to said threaded rod to enable adjustment of said l. 1 rod relative to said supporting member from a place remote to said abutment.
  • Glass cutting apparatus such as defined in claim 1, in which said glass cutting means comprises a fixed guide rail located below said abutment and between the glass sheet issuing from the drawing machine and said gauge means, said guide rail being disposed in parallelism with the glass sheet and inclined to the direction of draw of such glass sheet, and means supporting said guide rail and operable to change the inclination of said rail to conform to the drawing speed of the glass sheet.
  • Glass cutting apparatus such as defined in claim 1, including a counterbalanced rigid frame and means for guiding said frame for vertical movement between upper and lower positions, said glass cutting means and said gauge means being secured to said frame and movable therewith, and including means operable to hold said abutment against retracting movement thereof for a given period after engagement thereof by the advancing end of the glass sheet so that the latter through such abutment moves said frame, together with said cutting and gauge means upwardly concurrently with the sheet during such given period, and including means operable to release said abutment from said holding means whereby said abutment is enabled to retract from its normal position at the end of said given period.
  • Glass cutting apparatus such as defined in claim 14, in which said holding means is mounted on said gauge rod and comprises latching means operable to releasably hold said abutment in normal position for said given period and stop means for controlling said latching means, and in which said releasing means comprises a fixed abutment located at a given position in the path of movement of said stop means so as to be engageable by the latter at the end of said given period.
  • Glass cutting apparatus such as defined in claim 15, including a third rod extending in substantial parallelism to said gauge and threaded rods and supporting said fixed abutment, and means operative to adjust the position of said third rod lengthwise thereof to adjust the position of said fixed abutment.
  • said third rod adjusting means comprises means operatively connecting said third rod in driven relation to the means for rotating said threaded rod to cause simultaneous adjustment of said movable gauge abutment and said fixed abutment.
  • Glass cutting apparatus such as defined in claim 17, including a fourth rod fixed with relation to and extending in substantial parallelism to said third rod, and means slidably connecting said third and fourth rods, whereby the latter functions as a guide for said counterbalanced rigid frame and the several means secured thereto.
  • Glass cutting apparatus such as defined in claim 1, including means operable to hold said abutment against retracting movement thereof when engaged by the advancing end of the glass sheet and means to control the holding action of said holding means on said abutment, and in which said control means on said abutment is operatively connected to said hold control means and operable when the advancing end of the glass sheet engages such abutment to cause said hold control means to move said holding means into holding relation with said abutment.
  • Apparatus for cutting a sheet of glass issuing from a drawing machine com rising glass cutting means for cutting such drawn sheet of glass along a given line spaced in back of the advancing end of such sheet, and means for controllin the operation of said cutting means, said control means including a gauge abutment extending across the path of feed of the advancing end of the glass sheet, a gauge rod extending in substantial parallelism with the direction of feed of the advancing end of the glass sheet, means for supporting said abutment on said rod at a given distance from a zero position on said rod and representing a given length of glass that would be cut by said cutting means if such zero position were located at the field of operation of said cutting means, and said supporting means supporting said abut ment for movement relative to said rod to enable said abutment to be displaced temporarily by the advancing end of the glass sheet without change of its given supported position on said gauge rod, means movably supporting said gauge rod and abutment and movable therewith as a unit assembly to shift said gauge rod longitudinal
  • Apparatus for cutting a sheet of glass issuing from a drawing machine comprising glass cutting means for cutting such drawn sheet of glass along a given line spaced in back of the advancing end of such sheet, and means for controlling the operation of said cutting means, said control means including a plurality of spaced gauge abutments arranged in aligned relation and each extending across the path of feed of the advancing end of the glass sheet, a gauge rod extending in substantial paral lelism with the direction of feed of the advancing end of the glass sheet, means for supporting said abutments on said rod at multiples of a given distance from a zero position on said rod and representing given lengths of glass that would be cut by said cutting means if such zero position were located at the field of operation of said cutting means, and said supporting means supporting each of said abutments for movement relative to said rod to enable said abutment to be displaced temporarily by the advancing end of the glass sheet without change of its given supported position on said gauge rod, means movably supporting said gauge rod and abutments and a
  • the method of cutting given lengths of glass from a sheet thereof issuing from a drawing machine comprising establishing on a gauge rod and across the path of feed of the advancing end of the glass sheet at a place remote from the glass cutting means, an abutment capable of being displaced by such sheet end and fixing the position thereof on the gauge rod at a predetermined distance from a given zero position representing a given length of glass that would be cut by the glass cutting means if such zero position were located at the field of operation of the cutting means, then shifting the gauge rod to establish the abutment at a distance from the field of operation of the glass cutting means representing the actual length of the glass to be cut without varying the abutments established position on the gauge rod and conducting such shifting of the gauge rod with the aid of measured indexing means, so that such actual distance from the cutting means is precisely arrived at, and then utilizing the abutment to automatically control the operation of the cutting means as the advancing end of the glass sheet comes into engagement therewith without halting the advancing movement of the sheet of glass.
  • said support means includes a guide extending lengthwise of the path of the ribbon, a movable stop support extending lengthwise of the path of the ribbon and to which the stops are secured in spaced relation lengthwise thereof, said stop support being guided by said guide for movement lengthwise thereof under control of said adjusting means and independently of the ribbon.
  • stop support means includes pivot means enabling each stop to be rockable independently into and out of the path of the ribbon without disturbing the spaced relation of said stops on said support means.
  • said signal-initiating means carried by each stop comprises a pair of normaily open electric switches and a switch actuator common to both switches, and an electric circuit including said switches and an electric motor arranged to effect operation of said cutting device, said switch actuator being arranged on the stop to actuate said switches when engaged by the leading end of the ribbon.
  • Apparatus according to claim 26 including means secured to said support means for applying a positive force on each stop tending to hold the same normally in advanced position across the path of the ribbon, said force applying means being yieldable under the force applied by the leading end of the ribbon to said stop to permit the stop to be moved out of the path of the ribbon.
  • said force applying means includes a stationary permanent magnet mounted on said support means to exercise on a portion of its associated stop a holding magnetic force which must be overcome by the ribbon before the step can be turned thereby out of the path of the ribbon.
  • said support means includes a support, a stop carrying bracket for each stop secured to said support, a screw provided on and rotatable relative to the stop-carrying bracket, a plate carried by said screw and pivotally supporting said stop, and a manipulating rod connected to said screw and operable to rotate the latter to cause the position of the stop to be adjusted relative to the cutting device.
  • lector means is adapted also to determine the latch which is to be etfective to latch a stop in the path of the leading end of the ribbon.
  • Apparatus according to claim 37 including a normally open switch carried by each stop and adapted on engagement of the leading end of the ribbon with the stop to transmit a signal to control latching of the stop.
  • each stop has a catch pivotally mounted on the stop support, the catch being rockable to the latching position thereof by a solenoid operable by closing of said stop switch.
  • a counter stop is provided for each catch, the counter stops being secured to a counter stop support at spaced intervals corresponding to the spacing of said stops and adapted at the end of a cutting operation to effect release of the catch appropriate thereto, said counter stop support being movable with the stop support to maintain the predetermined correspondence between the spacing of the stops and the counter stops.
  • said adjusting means includes a rotatable setting screw and wherein said counter stop support is coupled with said setting screw through a pair of bevel gears movable with the cutting device, and is adapted to import simultaneous and like lengthwise movement to the stop and counter stop supports.
  • Apparatus for determining the length of a section to be separated from the leading end of a continuous ribbon of glass issuing from a drawing apparatus, comprising a cutting device by which the ribbon is automatically scored along a line about which the leading section is separated from the ribbon at least two stops successively aligned in spaced relation in the path of feed of the ribbon and each including signal-initiating means adapted on engagement of the stop by the leading end of the glass ribbon to initiate a cut-startin signal for efiecting operation of said cutting device, a guide extending lengthwise of the path of the ribbon, a stop support guided by said guide and to which said Stops are secured in predetermined spaced relation considered in the direction of movement of the ribbon, stop adjusting means operable to effect simultaneous movement of the stops to positions at which one of the stops is spaced from the cutting device by a distance equal to that of the desired length of the next section to be separated from the ribbon, said means including a rotatable setting screw, driving means to effect rotation of the setting screw, and a setting nut
  • Apparatus for determining the length of a section to be separated from the leading end of a continuous ribbon of glass issuing from a drawing apparatus, comprising at least two stops successively aligned in spaced relation in the path of feed of the ribbon and each including signal-initiating means adapted on engagement of the stop by the leading end of the glass ribbon to initiate a cut-starting signal for effecting operation of a cutting device by which the ribbon is automatically scored along a line about which the leading section is separated from the ribbon, a guide extending lengthwise of the path of the ribbon, a stop support guided by said guide and to which said stops are secured in predetermined spaced relation considered in the direction of movement of the ribbon, stop adjusting means operable to shift said stop support and the stops thereon as a unit to e'ilect simultaneous movement of the stops to positions at which one of the stops is spaced from the cutting device by a distance equal to that of the desired length of the next section to be separated from the ribbon, said means being selectively operable to effect the initial portion of the simultaneous movement of

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
US77548958 1957-11-26 1958-11-21 Method of and apparatus for cutting a continuous ribbon of glass into sections Expired - Lifetime US3027646A (en)

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BE (1) BE562702A (pt)
CH (1) CH356241A (pt)
DE (1) DE1079286B (pt)
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GB (1) GB847892A (pt)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107834A (en) * 1959-01-19 1963-10-22 Pittsburgh Plate Glass Co Glass cutting apparatus
US3164046A (en) * 1959-06-19 1965-01-05 Saint Gobain Method and apparatus for automatically cutting a strip of glass
US3240090A (en) * 1964-03-17 1966-03-15 Corning Glass Works Method and apparatus for scoring sheet material
US3253756A (en) * 1963-04-29 1966-05-31 Pittsburgh Plate Glass Co Apparatus and method for cutting glass sheets
US4296662A (en) * 1980-03-17 1981-10-27 Libbey-Owens-Ford Company Method of and apparatus for cutting sheets of glass
US5758558A (en) * 1994-08-18 1998-06-02 Squires; Richard D. Precision measuring apparatus for locating workpieces for work operations
US20040028870A1 (en) * 2002-02-05 2004-02-12 Lehr Gregory S. Laminate inlay process for sports boards
EP1596155A1 (fr) * 2004-05-10 2005-11-16 SCHNYDER & CIE. S.A. Appareil de mesure à force constante
WO2017223032A1 (en) * 2016-06-21 2017-12-28 Corning Incorporated Multi-elevation drive apparatus for a glass manufacturing apparatus with tension control in bottom of draw
CN111074524A (zh) * 2020-01-18 2020-04-28 徐州恒辉编织机械有限公司 一种多功能飘带编织传动装置
CN114507005A (zh) * 2022-03-09 2022-05-17 甘肃旭康材料科技有限公司 一种丹纳水平拉管法玻璃管精切圆口机设备

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CN113479648B (zh) * 2021-07-08 2023-08-01 彩虹（合肥）液晶玻璃有限公司 一种玻璃基板搬运装置
CN114193337B (zh) * 2021-11-23 2022-11-22 江西省正百科技有限公司 一种可均匀覆盖的有机玻璃生产用双面喷砂装置

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US1973723A (en) * 1933-08-15 1934-09-18 Pittsburgh Plate Glass Co Apparatus for severing sheet glass
US2369617A (en) * 1944-06-08 1945-02-13 Gen Electric Strip cutting machine
US2535900A (en) * 1947-09-27 1950-12-26 Western Pine Mfg Company Ltd Electrically operated saw gauge

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CH103175A (fr) * 1922-02-04 1924-01-16 Libbey Owens Sheet Glass Co Dispositif pour couper du verre en feuilles.
US2650430A (en) * 1950-02-09 1953-09-01 American Window Glass Co Glass cutting machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1973723A (en) * 1933-08-15 1934-09-18 Pittsburgh Plate Glass Co Apparatus for severing sheet glass
US2369617A (en) * 1944-06-08 1945-02-13 Gen Electric Strip cutting machine
US2535900A (en) * 1947-09-27 1950-12-26 Western Pine Mfg Company Ltd Electrically operated saw gauge

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107834A (en) * 1959-01-19 1963-10-22 Pittsburgh Plate Glass Co Glass cutting apparatus
US3164046A (en) * 1959-06-19 1965-01-05 Saint Gobain Method and apparatus for automatically cutting a strip of glass
US3253756A (en) * 1963-04-29 1966-05-31 Pittsburgh Plate Glass Co Apparatus and method for cutting glass sheets
US3240090A (en) * 1964-03-17 1966-03-15 Corning Glass Works Method and apparatus for scoring sheet material
US4296662A (en) * 1980-03-17 1981-10-27 Libbey-Owens-Ford Company Method of and apparatus for cutting sheets of glass
US5758558A (en) * 1994-08-18 1998-06-02 Squires; Richard D. Precision measuring apparatus for locating workpieces for work operations
US20040028870A1 (en) * 2002-02-05 2004-02-12 Lehr Gregory S. Laminate inlay process for sports boards
EP1596155A1 (fr) * 2004-05-10 2005-11-16 SCHNYDER & CIE. S.A. Appareil de mesure à force constante
WO2017223032A1 (en) * 2016-06-21 2017-12-28 Corning Incorporated Multi-elevation drive apparatus for a glass manufacturing apparatus with tension control in bottom of draw
CN111074524A (zh) * 2020-01-18 2020-04-28 徐州恒辉编织机械有限公司 一种多功能飘带编织传动装置
CN114507005A (zh) * 2022-03-09 2022-05-17 甘肃旭康材料科技有限公司 一种丹纳水平拉管法玻璃管精切圆口机设备
CN114507005B (zh) * 2022-03-09 2023-12-12 甘肃旭康材料科技有限公司 一种丹纳水平拉管法玻璃管精切圆口机设备

Also Published As

Publication number Publication date
DE1079286B (de) 1960-04-07
FR1224067A (fr) 1960-06-22
GB847892A (en) 1960-09-14
BE562702A (pt) 1900-01-01
CH356241A (fr) 1961-08-15

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