NL8502945A - Bookbinding machine using heat to activate adhesive layer - automatically adjusts heating time for thickness determined by photodetector - Google Patents

Abstract

The binding machine (1) has a table-top case (2). In its upper surface (3) is a slot (4) which has an adjustable width. When the stack (6) of paper to be bound is inserted, it is supported from the front and rear by paper supports (10). The moveable front lid (3b) is slid backwards forcing rod-shaped heating elements.5) up against the spine. The rear part (3a) of the top plate is stationary, and the moveable front part (3a) of the top carries a printed circuit board (14) on its inside face. A photoelectric detector (8) determines the thickness of the stack and feeds a signal to a timing circuit. When the appropriate heating time an audio signal generator (9) operates. The user controls the machine via a control panel (13) in the front cover surround.

Description

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Binding device

The invention relates to a binding device, provided with a substantially rectangular box, with an adjustable slit formed in the top surface thereof, with a rod-shaped heating element underneath, in which slit a stack of sheets to be bound is inserted above the heating element, which a temperature suitable for the gluing is maintained and maintained for a time dependent on the stack thickness.

The height of the case of the hitherto known binding device, with the blade supports rising high above the gap, is a drawback with regard to its easy installability.

The aim is now aimed at overcoming this drawback and for this purpose it is provided according to the invention that the cupboard consists of a flat table-shaped frame, wherein the slit in the table surface is bounded on the one hand by a stationary rear table part and on the other by an adjustable front table part.

The preferred embodiment of this is such that the front table part is designed as a control board, under which the inner walls of the cabinet are arranged as circuit circuit support panels, and the rear table part serves as a resting place for finished product, with a further aspect being that leaf supports to be set up are connected to the gap.

For automatic operation, it is further provided that the heating element is adjustable by the gap width set in dependence on the stack thickness, whereby a tactile eye, which goes on a stack of sheets to be inserted into the gap, controls the activation of the heating element and an audio signal marks the end of the binding time.

Further aspects of interest are furthermore: - that the resting place for finished product comprises at least one support to be inserted into the table surface;

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«Γ c - 2 - - that the appliance is equipped with a temperature stabilizer, with an even temperature ramp to promote good adhesion; and - that the device is switched to a different voltage by switching the board.

The invention is explained in more detail below with reference to an illustrative embodiment thereof shown in the drawing.

The single figure shows a perspective view of a binding device 1 with a flat table-shaped box frame 2, which has an adjustable slit 4 in its table surface 3, with a steel-shaped heating element 5 mounted underneath in the box 2, which has a slit 4 inserted stackable sheets 6 'with cover 7 to be bound.

The slit 4 is on the one hand delimited by a stationary rear table part 3a and an adjustable front table part 3b, the adjustment of which, depending on the binding thickness, also regulates the binding time, in that the greater the thickness, the longer the binding time is proportionally .

As schematically indicated by dotted lines, the inner walls of the front part of the cabinet 2, under the front table part 3b, are arranged as circuit circuit support panels. The circuit elements are of a commercially available type and are therefore only schematically indicated. It is important, however, that the heating time, between the covering of an inserted stack of sheets 6 to be bound with a cover 7 to be bound by a tactile eye 8, and an audio signal element 9 going off towards the end of the binding time, is automatically controlled by the adjustable front table part 3b adjusting the width 30 of the slit 4 depending on the thickness of the stack 6.

The leaf supports 10 to be erected along the slit 4, which hold the stacking package 6, are also indicated by dotted lines and can, if desired, be used in the table surface ν 'λ l 5, VV i & -} 3 * «« · - 3 - 3 be folded away.

The resting plate for finished product provided by the rear table part 3a is indicated by A and insertable in the table surface 3 there are removable supports 12 on the spot.

5 There is a control board 13 on the front table part 3b.

By exchanging the print 14, the device 1 can be switched if desired from, for example, 220 to 110 volts, since the mains voltages can vary mainly in China and Indonesia.

The device requires practically no maintenance and is finished by an epoxy paint powder treatment and fully meets the set objectives and can therefore easily be installed on an office table and due to its low height also in a storage compartment or 15 drawer.

It is noted that the above-mentioned embodiment of the new binding device should not be given a limiting meaning, since other useful embodiments are possible without departing from the scope of the invention.

20 Also added as an appendix to the drawing is a wiring diagram of the elements of the operating circuit of the binding device mounted on the inside along the cabinet walls, whereby it is noted, in order to avoid any misunderstanding, that the numbering of the electrical terminals 25 occurring therein must not be confused. is with the numbering of the main components of the binding device and of the articles to be bound therein used in the preceding explanation.

Central to the schematic is the print or chip to which a number of logic circuits N ..... N are connected.

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Claims (8)

1. Binding device, provided with a substantially rectangular box, with an adjustable slit formed in the top surface thereof, with a rod-shaped heating element underneath, in which slit a stack of sheets to be bound is inserted above the heating element, which is placed on a pre-gluing element suitable temperature is brought and maintained during a dependence on the stack thickness, characterized in that the box (2) consists of a flat table-shaped frame, the slit (4) in the table surface (3) being bounded on the one hand by a stationary rear table part (3a) and on the other hand an adjustable front table part (3b). Device according to claim 1, characterized in that the front table part (3b) is designed as a control panel (13), under which the inner walls of the box (2) are arranged as circuit circuit support panels, and the rear table part (3a ) serves as a resting place (11) for finished product. Device according to claim 1 or 2, characterized in that the leaf supports to be mounted (10) are associated with the gap (4). Device according to any one of the preceding claims, characterized in that the heating element (5) is adjustable by the gap width set in dependence on the stacking thickness, wherein a tactile eye (8) which is inserted into a slot in the gap (4) binding stacking sheets (6) is triggered, the heating element is switched on 25 and an audio signal (9) marks the end of the binding time. Device according to any one of the preceding claims, characterized in that the resting place (11) for finished product comprises at least one support (12) to be inserted into the table surface (3). Device according to any one of the preceding claims, characterized in that the device (1) is provided with a temperature stabilizer, with an even temperature rise. Device according to one of the preceding claims, * * »» - = 1 -¾ „1 .1 · ** o 0 \ JL 'è 4 Ö - 5 - characterized in that the device is exchanged by printing (14 ) to switch to a different voltage. 8. Device substantially as suggested in the description and / or drawing. 3: 2343