EP0696235B1 - Wheel applicator device for applying adhesive, especially to the spines of books during bookbinding - Google Patents

Wheel applicator device for applying adhesive, especially to the spines of books during bookbinding Download PDF

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Publication number
EP0696235B1
EP0696235B1 EP94912319A EP94912319A EP0696235B1 EP 0696235 B1 EP0696235 B1 EP 0696235B1 EP 94912319 A EP94912319 A EP 94912319A EP 94912319 A EP94912319 A EP 94912319A EP 0696235 B1 EP0696235 B1 EP 0696235B1
Authority
EP
European Patent Office
Prior art keywords
wheel
adhesive
reservoir
walls
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94912319A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0696235A4 (en
EP0696235A1 (en
Inventor
Colin Pedigrew
Andrew Nixon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nordson Corp
Original Assignee
Nordson Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nordson Corp filed Critical Nordson Corp
Publication of EP0696235A4 publication Critical patent/EP0696235A4/en
Publication of EP0696235A1 publication Critical patent/EP0696235A1/en
Application granted granted Critical
Publication of EP0696235B1 publication Critical patent/EP0696235B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42C—BOOKBINDING
    • B42C9/00—Applying glue or adhesive peculiar to bookbinding
    • B42C9/0006—Applying glue or adhesive peculiar to bookbinding by applying adhesive to a stack of sheets
    • B42C9/0012—Applying glue or adhesive peculiar to bookbinding by applying adhesive to a stack of sheets with a roller

Definitions

  • the invention pertains to a wheel applicator device for the mechanized application of an adhesive to workpieces, especially to the spines of books during the process of bookbinding, according to the pre-characterizing portion of claim 1.
  • Wheel applicators of this type are known and are used to apply liquids, especially adhesives, in the processing of, for example, leather, paper, wood, and other natural and synthetic materials and in bookbinding.
  • wheel applicator devices can be connected to bookbinding machines. According to the state of the art, this coupling is implemented in such a way that the wheel applicator is flanged by its housing or frame to the bookbinding machine by means of appropriate fastening means, such as screw joints.
  • the applicator wheel in the known devices is coupled by way of a gear wheel to the bookbinding machine.
  • a shaft coupling or the gear wheel is installed inside the flange connection. In this way, the applicator wheel is driven at the correct rotational speed.
  • a coupling of this type between a wheel applicator device and a bookbinding machine suffers from the several disadvantages. It takes a great deal of mechanical work to assemble and disassemble the flange joint between the bookbinding machine and the wheel applicator, and the necessary fastening means must be provided on both devices.
  • the dimensions of the flange connection must be identical, or custom-made adapters must be available for the various attachments.
  • the flange joint must also be fabricated with special precision to ensure trouble-free, low-loss transmission of the mechanical power required to drive the wheel applicator, this power being transmitted by means of gear wheels, which must themselves be precisely aligned. This precision fabrication is required to ensure that the applicator wheel is positioned accurately vis-Avis the book spines to be glued.
  • US-A-3373052 discloses a wheel apparatus according to the pre-characterizing portion of claim 1.
  • This known apparatus has a reservoir for adhesive.
  • a partition is arranged within the reservoir, to define a chamber for the generation of a current adhesive circulation.
  • the apparatus does not include any means for controlling the amount of adhesive to be transferred by means of the wheel, so that a fine adjustment of the amount of adhesive to be applied is very difficult.
  • the present invention is based on the task of providing a wheel applicator which eliminates almost all of the disadvantages of the state of the art, can be used in an especially simple manner in conjunction with various bookbinding machines, and which, especially when use is being made of polyurethane as adhesive, gives favorable results with respect to the application of the adhesive.
  • An advantage achieved by means of a design such as this is that only the amount of adhesive that actually needs to be applied to the spine is in fact transferred to the rotating applicator wheel and that, overall, only a small amount of adhesive needs to be kept ready in the open glue tank, which means that adhesives such as polyurethane in particular, which decompose under certain conditions, can be used successfully.
  • An embodiment of the invention in which the applicator wheel and the spinner wheel are mounted jointly on a separate frame, which is attached to the main frame in such a way that it can be flipped upward, is especially advantageous, because after the applicator wheel, the spinner roll, and all of the doctor blade devices have been flipped into the up position, they are very easy to clean. In this condition, it is then also very easy to clean the glue tank.
  • a frame 2 which extends essentially in a horizontal plane, is connected in this embodiment of the wheel applicator to a vertically oriented gear column 6, belonging to a machine stand 4.
  • the lower end of gear column 6 is rigidly connected to two horizontal crossbraces 8, designed as hollow sections, which are in turn welded at their ends to two beams 10.
  • Two rollers are provided on the bottom of each of the two beams 10, which means that the entire wheel applicator device 1 can be rolled around on machine stand 4.
  • On each beam 10 one of the rollers is supported so that it can pivot around a vertical axis and can be locked with clamps (not shown). Wheel applicator 1 can thus be immobilized in the desired location.
  • gear column 6 is provided on its external side with teeth in the manner of a toothed rack and is held inside a bearing block 14 in such a way that it can neither slide in the axial direction nor rotate; the bearing block is rigidly connected to the bottom of frame 2, and a plurality of teeth on gear column 6 engage with a pinion (not shown) supported inside bearing block 14.
  • This pinion can be turned by a hand crank, which operates a gear box also mounted inside bearing block 14.
  • frame 2 therefore moves up or down in the vertical direction depending on the whether hand crank 16 is turned clockwise or counterclockwise; the frame can be locked at the desired height by means of a clamp device (not shown), which is a component of bearing block 14.
  • a drive motor can also be used to adjust the height of the frame in this way.
  • the range over which the frame can be adjusted is about 100 mm.
  • a distance pickup is mounted on bearing block 14; in cooperation with a pulse transmitter attached to gear column 6, such as a transmitter in the form of a magnetically coded tape measure, this pickup makes it possible to determine the position of the frame relative to gear column 6 and thus to determine the height of the frame relative to the floor.
  • the height value is shown on a display unit 26.
  • a drive unit 22 consisting of an electric motor 18 and a transmission unit 20; an electronic control device 24 with display unit 26; a control panel 28; an applicator wheel 30; a spinner roll 32; and a glue tank 34 are mounted on frame 2.
  • Electric motor 18 is housed horizontally above frame 2, inside a motor housing 36 provided with an air vent 38; the rotary motion can be transferred by way of the motor's output shaft to transmission unit 20.
  • the motor is electrically connected to electronic control device 24, which is installed inside a housing next to motor housing 36.
  • Electric motor 18 is supplied with voltage from the outside by this controller, which can also control the rpm's of the motor.
  • Display unit 26 is connected electrically to the controller and is installed in one of the ends of the housing of electronic control device 24 (see Figure 1.) The signal originating from the distance pickup, which is housed connected to (the source of) a signal for controlling the speed of electric motor 18.
  • glue tank 34 which is open at the top, applicator wheel 30, and spinner roll 32 are installed at the end of frame 2, opposite electronic control device 24 and electric motor 18.
  • Applicator wheel 30 and spinner roll 32 are mounted cantilever fashion inside transmission unit 20 so that they can rotate around a horizontal axis (see Figure 6) and are driven by the transmission.
  • the peripheral surfaces of applicator wheel 30 and spinner roll 32 can have surfaces of especially high quality, such as the surface which can be produced by plasma coating.
  • the two end surfaces of applicator wheel 30 have an outward-curving, conical form.
  • Glue tank 34 is partially filled with adhesive, and the lower part of applicator wheel 30 is immersed in the adhesive.
  • main doctor blade 40 (see Figures 3 and 4), which is mounted directly next to the peripheral surface of applicator wheel 30.
  • the task of this doctor blade is to wipe off excess glue adhering to applicator wheel 30 and thus to limit the amount of glue which is transferred.
  • Main doctor blade 40 is set up at an angle of about 45° to the horizontal and can be moved by means of a pneumatically actuated piston in such a way that the width of the gap formed between main doctor blade 40 and applicator wheel 30 can be varied.
  • Another doctor blade 42 is mounted between applicator wheel 30 and spinner roll 32 to wipe adhesive from applicator wheel 30.
  • Another doctor blade 44 is mounted behind spinner roll 32, i.e., "behind" with respect to the direction in which the workpieces to be glued are moving. Doctor blades 42, 44 are also adjustable.
  • Doctor blades 40, 42, 44 are mounted, jointly with transmission unit 20, to which applicator wheel 30 and spinner roll 32 are connected, on a separate frame 46, which in turn is attached by one of its sides 48 in a hinge-like manner to frame 2 in such a way that it can pivot; the entire frame 46 can thus be flipped upward by raising opposite side 50 of the frame and held in the up position by means of a latching bolt.
  • frame 46 is in this flipped-up position, convenient access is provided to glue tank 34 and to doctor blades 40, 42, 44, so that they can, for example, be cleaned.
  • Glue tank 34 has an upper outside edge 62, which, in Figure 5, appears as a rectangle; an upper inside edge 64, situated farther inward and somewhat lower down, has slightly rounded corners 65.
  • a nearly vertical forward end wall 66 of glue tank 34 continues into a bottom area, whereas, at the back end, a less steeply angled rear end wall 68 continues into the bottom area.
  • the forward and back end walls 66, 68 are connected by two side walls 70, 72.
  • a horizontal inlet hole 74 coming from outside of the glue tank, has its opening; a supply line (not shown) for introducing adhesive is connected to this inlet hole; the opening of this supply line has an elongated appearance, as shown in Figure 5.
  • a doctor blade device 78 is built into the bottom 76 of glue tank 34 near the lower part of applicator wheel 30; this doctor blade device consists of a step 80, approximately at the lowermost point of the wheel's periphery and extending axially with respect to the wheel. This step is located between a first bottom section 82 of glue tank 34 relatively far away from the peripheral surface of the wheel and a second bottom section 84, following in the direction of rotation, relatively close to the peripheral surface, with the result that a gap 86 is formed between applicator wheel 30 and second bottom section 84.
  • the step has an approximate height of 1-2 mm, and the distance between it and the peripheral surface of applicator wheel 30 is about 5/10 mm to 7/10 mm. Gap 86 ends at an edge 88 and is bounded on the sides by two walls 90.
  • doctor blade device 78 drops down from edge 92 and continues toward the left as forward end wall 66.
  • a vertical outlet hole 94 is provided, which can be connected to an outlet line (not shown) by means of an internal thread.
  • a kind of collecting basin 96 is recessed into bottom 76 near outlet hole 94.
  • Side walls 90 are approximately horizontal at their highest point, starting from edge 88 and extending all the way to edge 98, and then they drop down in the rear area to bottom section 82, ending at a crease 100 in floor 76 of glue tank 34.
  • electric motor 18 makes use of an intermediate gear 102 to drive, in a manner not shown, a countershaft 104 of transmission unit 20.
  • gear wheel 106 At one end of countershaft 104 there is a gear wheel 106, which meshes with a gear wheel 108 on applicator wheel shaft 110.
  • a gear wheel 112 also mounted on applicator wheel shaft 110, engages with a pinion 114, which drives a second countershaft 116, on which a wheel 118 is mounted, by way of which a spinner roll shaft 122 is driven by means of a toothed belt 120 and an additional wheel 121.
  • Both applicator wheel 30 and spinner roll 32 are supported in cantilever fashion.
  • wheel applicator device 1 is pushed into position near a bookbinding machine (not shown), so that applicator wheel 30 and spinner roll 32 are underneath the conveyors and guides (not shown) of the bookbinding machine, Then applicator wheel 30 and spinner roll 32 are adjusted in the vertical direction by turning hand crank 16 to raise or lower the frame.
  • the conveyors and guides convey book blocks 54 to be glued forward at an adjustable speed; the blocks are aligned so that the length dimension of book spines 55 is perpendicular to the axis of applicator wheel 30 and so that the spines are conducted past the top apex line of the peripheral surface of applicator wheel 30.
  • Book spines 55 to be glued thus come into contact with the adhesive, which was picked up in the lower part of the glue tank and which is adhering to the peripheral surface of applicator wheel 30; in this way the glue is transferred to book spine 55.
  • Excess glue adhering to the spine is removed or pressed into the intermediate spaces between the pages of the book by spinner roll 32, which rotates in the direction opposite that of applicator wheel 30.
  • the peripheral velocity of applicator wheel 30 is exactly the same as the transport speed of the book blocks, which is accomplished by the coupling of controller device 24 to an electrical signal transmitter with a sensor, the signal transmitter being mounted rigidly inside the bookbinding machine in such a way that its sensor can detect the motion of book blocks 54.
  • a signal corresponding to the speed of book blocks 54 is available at the output of the signal transmitter for use by control device 24.
  • the signal can be transmitted by the signal transmitter in a wireless manner or by means of a cable, which can be plugged into a jack in control device 24.
  • the conveyors and guides of the bookbinding machine push book blocks 54 forward at a constant speed in such a way that spines 55 are in a horizontal plane 53.
  • the two top apex lines 59, 61 of the peripheral surfaces of applicator wheel 30 and spinner roll 32 are directly adjacent to plane 53.
  • the distance between spinner roll 32 and plane 53 and thus the distance between apex line 61 and plane 53 can be adjusted by the use of means (not shown) for a adjusting the height of spinner roll shaft 122, these means being provided inside transmission unit 20 and comprising, for example, pneumatic cylinders, the piston rods of which act on guide shoes, which are supported in such a way that they can slide vertically inside the housing wall.
  • the bearings for spinner roll shaft 122 are installed in these shoes.
  • the speed and direction of rotation of spinner roll 32 are coupled "rigidly" to the speed of applicator wheel 30, but it is also possible, of course, to provide an independent drive for spinner roll 32.
  • Fresh adhesive is introduced at a metered flow rate into glue tank 34 through inlet hole 74 ( Figures 4 and 5) from an adhesive preparation device (not shown).
  • a relatively large amount of the adhesive supplied to the tank is subjected inside the glue tank to the currents caused by the rotation of applicator wheel 30 and is thus conveyed toward a narrowing gap, formed between first bottom section 82 and a section of the peripheral surface of applicator wheel 30 opposite that part of the bottom.
  • the adhesive arrives in gap 86 and is transported through it.
  • doctor blade device 78 By virtue of the special design of doctor blade device 78, most of the adhesive introduced into gap 86 passes directly through the gap and is carried from there, because of its adherence to the peripheral surface of applicator wheel 30, past main doctor blade 40 and onto book spines 55 to be glued.
  • main doctor blade 40 and applicator wheel 30 By varying the distance between main doctor blade 40 and applicator wheel 30, it is possible to vary the thickness of the film of adhesive adhering to applicator wheel 30, this possibility being necessary so that the application of adhesive can be adapted to suit the interval between one book block 54 to be glued and the following block and also to suit the length of spine 55.
  • Another sensor is provided for this, which signals the arrival of a book block above the forward area of the glue tank.
  • the above-mentioned signal transmitter inside the bookbinding machine supplies a frequency signal, also mentioned above, which is proportional to the speed of the machine.
  • This signal is also used as a distance signal for the control of main doctor blade 40.
  • Main doctor blade 40 opens and closes with each book passing by the wheel, corresponding to arrow 41 in Figure 4.
  • the control system is set up so that the length over which glue is applied is kept constant no matter how the speed of forward feed may change.
  • An electromagnetically driven pneumatic cylinder (not shown in the drawing for the sake of clarity) is used to move main doctor blade 40 in the direction indicated by arrow 41.
  • doctor blades 42, 44 also serve to wipe off excess adhesive from applicator wheel 30 and spinner roll 32, respectively.
  • Step 80 of doctor blade device 78 is about 1 mm high, and a gap with a width of about 5/10-7/10 mm is formed between it and the applicator wheel.
  • Applicator wheel 30, spinner roll 32, and glue tank 34 can be heated electrically or by means of a thermal transfer fluid, if the properties of the adhesive require it.
  • a thermal transfer fluid In the case of an electric heating system, heating wires are provided in the walls of glue tank 34, close to the inside surface of the tank, and along and just inside the peripheral surfaces of applicator wheel 30 and spinner roll 32.
  • the heating wires in glue tank 34 are supplied with current from an electrical terminal 124, whereas the heating wires inside the applicator wheel are supplied by means of carbon brushes acting on shaft 110 of the applicator wheel.
  • a thermal transfer fluid is used to heat the adhesive, the heating wires are essentially replaced by channels.
  • the temperatures of the heated parts can be regulated by means of a controller installed inside the control device. Protection against overheating can also be provided.
  • Electric motor 18 is connected to a high-amperage line in a manner not shown.

Landscapes

  • Coating Apparatus (AREA)
EP94912319A 1993-03-26 1994-03-25 Wheel applicator device for applying adhesive, especially to the spines of books during bookbinding Expired - Lifetime EP0696235B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9304504U DE9304504U1 (de) 1993-03-26 1993-03-26 Radauftragsgerät zum Auftragen von Klebstoff, insbesondere auf Buchrücken beim Buchbinden
DE9304504U 1993-03-26
PCT/US1994/003297 WO1994022593A1 (en) 1993-03-26 1994-03-25 Wheel applicator device for applying adhesive, especially to the spines of books during bookbinding

Publications (3)

Publication Number Publication Date
EP0696235A4 EP0696235A4 (en) 1995-11-16
EP0696235A1 EP0696235A1 (en) 1996-02-14
EP0696235B1 true EP0696235B1 (en) 1998-08-26

Family

ID=6891182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94912319A Expired - Lifetime EP0696235B1 (en) 1993-03-26 1994-03-25 Wheel applicator device for applying adhesive, especially to the spines of books during bookbinding

Country Status (6)

Country Link
EP (1) EP0696235B1 (it)
JP (1) JPH08508445A (it)
AU (1) AU6492994A (it)
CA (1) CA2157122A1 (it)
DE (2) DE9304504U1 (it)
WO (1) WO1994022593A1 (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2129326B1 (es) * 1996-05-30 2000-01-16 Barberan Sa Cabezal para la aplicacion a rodillo de cola de poliuretano reactivo.
ES2135328B1 (es) * 1997-05-28 2000-05-16 Latorre Jesus Francis Barberan Perfeccionamientos en los cabezales de aplicacion a rodillo de colas de poliuretano reactivo.
EP1084864B1 (de) * 1999-09-17 2003-11-12 Grapha-Holding Ag Leimwerk zum Auftragen eines Klebstoffes auf den Rücken oder angrenzende Bereiche eines vorbeigefürten Buchblockes.
DE102005002737A1 (de) * 2005-01-20 2006-08-24 Kolbus Gmbh & Co. Kg Vorrichtung zum Auftragen von Klebstoff auf Buchblocks
DE102007054147A1 (de) * 2007-11-12 2009-05-20 Khs Ag Leimwalze sowie Etikettieraggregat mit einer solchen Leimwalze
JP6161115B2 (ja) * 2013-05-27 2017-07-12 ホリゾン・インターナショナル株式会社 無線綴じ製本装置の糊付けユニット

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483652A (en) * 1946-08-07 1949-10-04 Joseph O Lee Moistening machine for wallpaper
US2605739A (en) * 1947-08-26 1952-08-05 Florez Company Inc De Machine for applying adhesive to the binding edges of books
GB1044022A (en) * 1963-03-19 1966-09-28 Kurt Koerber Method of and apparatus for maintaining a constant liquid level
US3718115A (en) * 1971-01-27 1973-02-27 Int Paper Co Adhesive application system
US3800702A (en) * 1972-12-07 1974-04-02 S & S Corrugated Paper Mach Inking apparatus having automatic wash-up means
DD144383A1 (de) * 1979-08-13 1980-10-15 Gerald Winker Vorrichtung zum auftragen von schmelzklebstoff auf blockruecken
GB2134420B (en) * 1983-02-01 1987-08-26 Molins Plc Apparatus for applying adhesive
JPS59183856A (ja) * 1983-04-01 1984-10-19 Fuji Xerox Co Ltd 製本用接着剤の塗布装置
EP0376207A3 (en) * 1988-12-26 1991-07-03 Fuji Photo Film Co., Ltd. Application device

Also Published As

Publication number Publication date
CA2157122A1 (en) 1994-10-13
EP0696235A4 (en) 1995-11-16
DE69412813D1 (de) 1998-10-01
DE69412813T2 (de) 1999-02-25
EP0696235A1 (en) 1996-02-14
AU6492994A (en) 1994-10-24
WO1994022593A1 (en) 1994-10-13
DE9304504U1 (de) 1993-06-03
JPH08508445A (ja) 1996-09-10

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