FI75117C - ANORDNING FOER ATT FOERENA BLANKETTER TILL ETT BLANKETTSERIE. - Google Patents

Abstract

The aligner sealer (10) includes a base or frame (14), heating structure (16), infeed conveyor structure (18), output conveyor structure (20) and stacking rack (22). Form sheets are fed in groups on the infeed conveyor (18) through the heating stucture (16), where they are sealed into form sets, then fed onto the outfeed conveyor (20) and stached against the rack (22). The infeed conveyor structure (18) includes means for aligning the from sheets of the groups before the groups enter the heating means (16).

Description

1 75117

The present invention relates to an apparatus for processing a business form suitable for offices, and more particularly to an apparatus for transporting and sealing form sheets into a set of forms. More specifically, the invention relates to a device according to the preamble of claim 1.

Continuous business form combinations have long been considered desirable for mass mailings and the like. Your high-speed a printers have been used to write such combinations for both regular and variable writing. However, certain, desired, high-speed printers write with toners that are placed or attached by heat. Such printers are incompatible with form composite structures with heat sealable adhesives. Composite webs with heat sealable adhesives cannot be fed through printers or other heat generating devices, otherwise the webs would adhere too early and undesirably to the mechanisms of the device. As a result, webs of adhesive combinations must be joined or assembled with the written webs after writing.

However, in this assembly order, there are differences in the length of the sheets between the sheets of adhesive-coated webs and the written webs. Heating the printed webs during dye application dries the sheets of the printed webs, resulting in incompatibility of the sheet lengths. In addition, the standard sealing form cannot be used to match the double form.

It is an object of the present invention to provide a form sealing device capable of uniformly, continuously assembling and sealing form sheets with compatible and unsuitable form sheet lengths.

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Another object is to provide hardware that is reliable and easy to use and thus suitable for typical offices and staff.

This is achieved by a device according to the invention, the features of which appear from claim 1.

The form sheets are first assembled to allow for differences in sheet length, then detached from their webs and then sealed. The invention also comprises transporting the sets of sheets to be closed in an overlapping or imitation manner.

In a main aspect, the present invention is thus an apparatus for transporting and sealing assembled holiday sheets into sets of forms in which at least one sheet of each set has a heat sealable adhesive. The device comprises a base, a heating device and transport devices on the base. The heating devices comprise devices for heating the heat-sealable adhesive and for sealing the group 1 sheets. Conveying devices include devices for conveying groups of forms through heating devices. The transport devices include devices for aligning the form sheets of the groups before the groups arrive at the heating devices.

A preferred exemplary embodiment of the invention is described with reference to the accompanying drawings, which comprise four figures. The figures are as follows:

Figure 1 is a perspective view of a preferred embodiment with the feed section at the top left; Fig. 2 is a side view of a preferred embodiment with the body partially cut away to reveal internal details; Fig. 3 is a top or plan view of a preferred embodiment with the partial cover shown in Figs. 1 and 2 removed to reveal internal details; and Figure 4 is a cross-sectional view taken along line 4-4 in Figure 3.

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Referring to Figure 1, a preferred embodiment of the present invention is a shutter / conveyor 10 adapted to operate on 110 V and rest on legs, such as a leg 11 on a movable stand 12, for general office use. The device 10 comprises a base or body 14, a heating device 16, an inlet conveyor 18, a floating feed conveyor 20 and a stacking line 22. The sheets are fed in groups to an input conveyor 18 through a heating device 16 where they are sealed as log sets, then fed by a floating feed conveyor 20 stacked against the rack 22.

As shown only in Figure 1, the feed conveyor 18 comprises a conveyor having a plurality of conveyor belts, such as 24, tensioned around pulleys, such as pulleys 26, which are not 11a of the pulley shafts, such as shafts 28.

Also, as shown only in Figure 1, a plurality of guide or nip rollers 30 are arranged on the base 14, above the conveyor 18. The rollers 30 are adapted to the use of the feed conveyor belts. The articulated connecting portions 32 allow the rollers 30 to rotate about their central axes and the rollers 30 to pivot about an axis 34. The shaft 34 slides in grooved support brackets 36 for adjusting the distance of the rollers 30 from the outermost end 38 of the feed conveyor.

Device 10 is operable with a separator, collator and the like to receive sheets from such a device on a conveyor belt of a feed conveyor.

The belts of the feed conveyor are used to provide a form flow rate that is substantially less than that of a separator or the like associated with the device. The device 10 is secured to the associated device by body hooks 35. The sheet sheets, whether or not of compatible length, are passed to the conveyor belts 24. When incompatibility is expected, the rollers 30 are adjusted to be close enough to the feed end 38 so that the distance from the separator or the like end rolls to the rolls 30 is less than 4,111,117. Due to the speed of the conveyor and the position of the rollers 30, the form sheets of the form set, which arrive at the rollers 30 with incompatible lengths, become parallel and compatible.

In more detail, when a plurality of incompatible length sheets are driven on a conveyor belt 11, the leading edge of the form sheet that first arrives at the rollers 30 is decelerated to the speed of the belts 24 and rollers 30 in the nip of the belts 24 and rollers 30. The remaining sheets, the leading edges of which have not reached the rollers 30, are further driven at a higher speed towards the rollers 30. As the leading edge of each remaining form sheet arrives at the nip of the belts 24 and rollers 30, the leading edge of each sheet is decelerated, and each leading edge becomes parallel to or compatible with the leading edge of the first incoming sheet.

The form sheets in the row continue to move, at a slow speed of the belts 24 and rollers 30, to the heating device 16. When the form sheets of the second form sets arrive at the rollers 30, these second form sheets overlap with the parts following the form sheets 1 of the previous form sets. The fastener / conveyor 10 assumes such overlapping sets of forms which remain 1 imitated until they are stacked.

The sets of overlapping forms move at a speed determined by the feed conveyor 18 to the heating device 16. As shown in Figure 2-4, the heating device 16 includes vertically spaced upper and lower heating plates 40, 42. The plate or compression rollers 44 include roller segments on the shafts 48. , such as 46. The roller segments extend through the cut openings in the plates to drive the overlapping sets of forms through the heating device 16 between the plates 40, 42.

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As shown in Figure 2, the plate rollers include idle rollers in the cover 52 of the heater 16, and drive rollers driven by the motor 54 via a chain drive 50. The motor 54 drives the shaft 56 in a floating feed conveyor 20 which drives sprockets 58 attached to the shafts of the drive rollers. The shaft 56 and the sprocket 58 are parts of the drive 50.

The plates 40, 42 are heated by electrical resistors. The speed of each holiday set through the heaters 16 is the same as the speed of the feed conveyor 18, while the number of sets of heaters through the heater per unit time is determined by the speed of the separator or other associated device. As an example, each form may pass through the heating device 16 at a feed conveyor speed of 10 m / min, while sets of forms may accumulate in the device 10 at a separator speed of up to 20 m / min. The length and temperature of the tiles 40, 42 are set to soften the heat-sealable adhesive of the holiday sets as they pass between the tiles 40, 42.

Most preferably, the plates 40, 42 soften the adhesive 11a as the adhesive passes at a conveyor speed reported to be, for example, 10 m / min, and accumulates at a separator speed indicated, for example, at up to 20 m / min. Most preferably, the tiles 40, 42 soften the adhesive on sheets of form 2 weighing 25-140 g / m 2.

The formed closed form sets leave the heating device 16 for a floating feed conveyor comprising several conveyors! nh i hnoj a 60, tensioned around the pulleys 62, as shown in Fig. 1. The feed conveyor belts are operated at the same speed as the feed conveyor belts. At the end of the output conveyor 20, the form sets are driven to the rack 22. Since the form sets remain imitated by the floating feed conveyor belt 11e, each form set acts as a guide for the movement of the next sets of forms on the rack 22. The form sets remain stacked on the rack 22, ready to use

Claims (5)

An apparatus for transporting and attaching groups of form sheets to form series, wherein there is in at least one form sheet in each bleach series a heat-sealable bond, characterized in that it comprises a substrate (14); a heating device (16) p in the substrate for heating the heat-sealable glue blank to join the blank sheets in the groups; and transporting means (18, 20) p§ the basis for transporting the form sheet groups through the heating device, the transporting means (18) including means (30) for aligning the form sheets in the groups before the groups arrive at the heating device (16). Device according to claim 1, characterized in that the sheet sheets have conductive edges, and that the device 1i k-directing devices (30) grasp the leading edges of the groups sheet sheets for rectifying the sheets before the groups reach the heating device (16). Device according to claim 1, characterized in that the transport device (18) comprises devices for bringing the groups of blank sheets into overlapping groups and that the heating device (16) comprises devices for heating the overlapping groups. 4. Apparatus according to claim 1, characterized in that the conveying devices comprise an input conveyor (18), press rollers (44), an output conveyor (20) and