JPS6333887Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a folding device for chip-folding (right-angle folding) sheet-fed printed matter. The present invention relates to a chopper folding device which is equipped with a folding device and which allows sheet-fed printed matter to be delivered to a conveying device without paper jamming between the rollers.

[Conventional technology]

It is attached to a rotary press and folds sheet-fed printed matter at right angles.
Chip folding devices are widely used to advance the book to the next step of the bookbinding process. FIGS. 1 and 2 show the general structure of a chopper folding device. In this type of prior art chip folding device, the printed signature 2 is first cut into a predetermined length by a cutting cylinder 4, passes through a plunging cylinder 6, reaches a cutting cylinder 8, and is then cut to a predetermined length by a cutting cylinder 4. It will be folded horizontally at 8. After the signature 2 is conveyed on the chopper table 10 while being held by a conveyor belt 12, the movement of the signature 2 is stopped by a stopper 14 provided on the chopper table 10. Next, the tipper blade 16 made of a steel plate is lowered to the signature 2 unfolded on the tipper table 10.
The signature 2 is forcibly inserted into the gap between the pair of folding rollers 18 and 20, bent at right angles to the conveying direction, falls onto the impeller 22, and is carried out by a conveyor (not shown). Become.

By the way, the tipper blade 16 is fixed to the shaft 24 as can be understood from the figure.
is connected to the crank 28 via the lever 26, so that by the rotational movement of the crank 28,
The chopper blade 16 rotates in the vertical direction about the shaft 24 as a fulcrum. On the other hand, one roller 18 of the chopper folding rollers is supported by a fixed shaft 30, while the other roller 20 is supported by a lever bearing 34 pivotally connected to a shaft 32. Lever bearing 34
has a compression spring 36 attached to its upper end, and therefore, under the adjustment action of this compression spring 36, the other roller 20 adjusts not only the pressing force but also the gap with the other roller 18. can do. The compression spring 36 is adjusted by screwing a nut 38 in the former case and a nut 40 in the latter case (see FIG. 3).

[The problem that the idea attempts to solve]

However, the chopper folding device having such a structure has the disadvantage that the signature sometimes jams in the gap between the chipper folding rollers, causing the entire machine to stop. For example, when the signature 2 is inserted into the gap between the rollers 18 and 20 by the chopper blade 16, the signature 2 wraps around one of the rollers and is no longer conveyed to the impeller 22 (the first 6
(see figure). In order to eliminate such problems, some devices have been seen in which guide rods 42 and 44 are attached to both rollers 18 and 20, respectively, and the signatures 2 are guided downward by these guide rods 42 and 44. 5), rollers 18, 20, and guide rods 42, 44 are narrow, making it impossible to completely avoid paper jams of folded signatures 2. In addition, when one web is bonded to another web by a high-speed splicing device (for example, there is one commonly known as an autopaser),
If a signature with the seam is suddenly inserted between the rollers 18 and 20, the swinging roller 20 will cause an escape action (see Figure 7), causing the signature to slip. 2 will not be smoothly conveyed to the impeller 22. As a result, the next folded signature gets caught on the tipper table 10, resulting in a paper jam.

Therefore, the purpose of the present invention is to use an endless belt as a guide that moves at the same speed as the rotational speed of the chopper folding rollers to reliably grip and transport the signatures with appropriate holding pressure and fold them. To provide a chip folding device which can effectively prevent paper jams and wrapping of sheets.

[Means to solve the problem]

The chopper folding device according to the present invention includes a chipper blade, a chipper table having a gap into which the chipper blade enters, a pair of chipper folding rollers arranged oppositely below the chipper table, and an impeller provided below the chipper folding roller. In a chopper folding device that folds a signature conveyed on a chipper table via a conveyor belt by the vertical movement of the chipper blade and the rotational movement of the chipper folding roller, coaxial rollers are provided at both ends of the pair of chipper folding rollers. a pair of nip pulleys are provided directly below each of the chopper folding rollers in correspondence with each of the pulleys, and the nip pulley for one of the rollers is pivotally supported on a fixed shaft. A nip pulley for the other roller is pivotally supported on a movable shaft, and an impeller is provided below one nip pulley that is pivotally supported on a fixed shaft, and this impeller is provided with a pulley that is coaxial with the nip pulley and has approximately the same outer diameter. , an endless belt is suspended between the pulleys of the one of the chopper folding rollers, a nip pulley, and a pulley of the impeller via a tension pulley; The endless belt is suspended by means of means for elastically pressing the movable shafts of the pulley of the other chopper folding roller and the nip pulley against the opposing pulley of the chopper folding roller and the nip pulley, and these The opposing endless belts are elastically brought into sliding contact between the pulleys of the pair of chopper folding rollers and the nip pulleys.

[Effect]

According to the chopper folding device according to the present invention, a pulley is attached to the outer side of a pair of folding rollers, a nip pulley is arranged directly below each of these pulleys, and the pulley of each folding roller and the nip pulley are assembled as a set. An endless belt is hung through each tension pulley, and one nip pulley is supported by a movable shaft so as to be elastically pressed toward the other nip pulley, and the outer periphery of the folding roller is If the surface and the outer surface of the endless belt are configured to be on the same plane, the signature introduced into the gap between the folding rollers will come into sliding contact with the rollers and the outer surface of the endless belt, and will be affected by the rotational action of the rollers and the endless belt. As a result, the paper is forcibly conveyed and reliably received by the impeller waiting while rotating below, thereby providing a chip folding device that can solve the above-mentioned problems at once.

〔Example〕

Next, a preferred embodiment of a chopper folder according to the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 8, reference numerals 56 and 58 indicate chopper tables of a chopper folding device which form the required gap 55 between their edges 52 and 54. As described later, the chopper tables 56 and 58 are
The chopper blade 116 descends to bend the signature 112 at right angles to the belt 114 and
In order to guide the tip smoothly downward, the end edges 52 and 54 of the chopper tables 56 and 58 are curved. Chiyotupa table 5 configured in this way
Chopper folding rollers 60 and 62 are rotatably supported directly below the respective end edges 52 and 54 of the rollers 6 and 58 so as to be close to each other (see FIGS. 8 and 10).
In particular, in this case, one of the chip folding rollers 60
is pivotally supported on a fixed shaft 64, but this fixed shaft 64
, there is a pair of pulleys 6 with the roller 60 in between.
6 and 66 are attached to the shaft. Note that the other chopper folding roller 62 is pivotally supported on a movable shaft 68. The movable shaft 68 has pulleys 7 at both ends of the roller 62.
0 and 70, and is pivotally supported by a lever bearing 74 which is supported by a fulcrum shaft 72. This lever bearing 74
is elastically held by engaging a compression spring 78 with a bulge 76 formed on one side of the upper portion.

Next, the pulleys 66, 66 and 70, 70
Below the nip pulleys 80, 80 and 8, respectively.
2,82 is installed. In this case, pulley 66 and nip pulley 80, pulley 70 and nip pulley 82
are positioned so as to rotate by means of endless V-belts (hereinafter simply referred to as V-belts) that form groups and are suspended from each group. That is, the nip pulley 80 is located directly below the pulley 66, and the nip pulley 82 is located directly below the pulley 70 and is connected to the shafts 84, 8.
Install it on 6. The shaft 84, like the shaft 66, is a fixed shaft, and the shaft 86, like the shaft 68, is a movable shaft. Therefore, the movable shaft 86 is supported by a lever bearing 88, and the lever bearing 88 is elastically swung about the shaft 90 by a compression spring 94 that is engaged with a bulge 92 of the lever bearing 88. It is composed of

Next, an impeller 96 is disposed diagonally below the nip pulley 80. As can be understood from FIG. 9, the impeller 96 is configured by three impellers supported by a shaft 98 at predetermined intervals. A blade 100 is locked to each of the impellers 96 . Feather 100
A total of six of these are fixed to a single impeller 96, and when the tip portion 102 of each rotates, the nip pulley 82
It is formed by curving its middle so that it extends downward (see Fig. 8). Pulleys 104, 104 having approximately the same diameter as the disk 97 constituting the main body of the impeller are provided on the outside of the impeller 96 on both sides. In addition, pulley 1
04 and 104 are allowed to rotate freely with respect to the shaft 98. V-belt 106 suspended from pulley 104
Use a urethane-based material with a smooth outer surface that can be butt-bonded. The V-belt 106 is suspended over the pulleys 66, 80 as well as the pulley 104, and rotates these pulleys 66, 80, and 104. In the figure, reference numeral 108 indicates a tension pulley, and reference numeral 109 indicates a signature stopper. The V-belt 106 is applied with a predetermined tensile force by the tension pulley 108 to smoothly rotate the pulleys 66, 80, 104.

Further, a V-belt 110 is suspended between the pulley 70 and the nip pulley 82, and the V-belt 11
0 is configured to be given a predetermined tension by a tension pulley 111 disposed below the nip pulley 82. In particular, in the present invention, V-belt 106 and V-belt 110 are movable shafts 68 and 110 under the action of compression springs 78 and 94, respectively.
It is important to press the fixing shafts 86 toward the fixed shafts 64 and 84 to keep them in contact with each other.

The chopper folding device according to the present invention is basically constructed as described above.Next, the operation of the device according to the present invention will be explained.

Printed signature 112 is on Chiyotsupa table 5
6, 58 while being held by the belt 114, and each end edge 5 of the chopper table 56, 58 is transferred.
2, 54, it is temporarily stopped by a stopper (not shown). Chiyotsupa Blade 116
However, the timing has been lowered, and the folding roller 6 is inserted into the gap 55 between the edge portions 52 and 54.
When inserted to interrupt 0,62,
The signature 112 is folded in half from the middle,
It is led out below the chopper folding rollers 60 and 62. At this time, since the shaft 68 is pivotally supported by the lever bearing 74, the chopper folding roller 62 swings against the elastic force of the compression spring 78, and therefore the chopper blade 116 encounters some resistance. While,
Completes the folding process easily. By the way, pulleys 66, 66 and pulleys 70, 70 are attached to both ends of the chopper folding rollers 60 and 62, respectively, and the V-belts 106 and 110, which are suspended over these pulleys, are driven to rotate in the direction of the arrow. Moreover, the V-belts 106, 110 are in pressure contact with each other at their outer portions under the action of the compression springs 78, 94. Therefore, the signature 112 is bent and transported downward as if being held by the V-belts 106, 110. The nip pulleys 80 and 82 further guide the thus-transferred signature 112 to the impeller 96. That is, since the movable shaft 86 supported by the fulcrum shaft 90 is provided with an elastic force under the action of the compression spring 94, the V-belt 10 is also applied to the nip pulleys 80 and 82.
6,110 maintains the pressure contact state, and this V-belt 1
Signature 112 forcibly inserted between 06 and 110
is held by V-belts 106 and 110 and transported downward. At this time, one blade 100 of the impeller 96, which is waiting while rotating below the nip pulley 82, receives the signature 112 that has been disengaged from the V-belts 106, 110. The impeller 96 rotates approximately half a turn to release the signature 112 by the signature stopper 109, and the signature 112 is moved to the next manufacturing process by another transfer device (not shown) disposed below the impeller 96. It turns out.

[Effect of idea]

As is clear from the embodiments described above, according to the present invention, an endless belt is hung between the pulleys at both ends of the pair of chopper folding rollers and the nip pulley below the folding rollers, and these endless belts are Since the folding rollers are pressed against each other through elastic pressing means, the folding sheets inserted between the folding rollers are properly held and guided by the endless belt without jamming, and are transferred to the impeller. It becomes possible to carry out the process reliably, and the alignment of the signatures becomes even better, making the next stage of work easier. Furthermore, the endless belt used for this transfer is tensioned by a tension pulley and does not loosen, so the signatures will not be damaged during transfer.
Furthermore, the elastic pressing means can easily adjust its elasticity, and even if the thickness of the signatures is different, it always maintains a predetermined pressing force and can safely and reliably transport signatures without paper jams. There are also benefits to being able to do so.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and design changes can be made without departing from the spirit of the present invention. Of course there is.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a chip folding device according to the prior art, FIG. 2 is a partial cross-sectional explanatory diagram of the chip folding device shown in FIG. 1, and FIG. 3 is a chip folding roller of the chip folding device according to the prior art. FIG. 4 is a front view of the chip folding roller equipped with a guide bar, FIG. 5 is a side view of the device shown in FIG. 4, and FIG. 6 is a state in which signatures are rolled up. 7 is a front explanatory diagram of the chip folding roller, and FIG. 7 is a diagram explaining the movable state of the chip folding roller equipped with a movable shaft.
FIG. 8 is a partially omitted explanatory diagram of the chopper folding device according to the present invention, and FIG. 9 is a view taken along arrow A-A in FIG.
Figure 0 is a developed plan view of Figure 8. 2...signature, 4...cutting cylinder, 6...pushing cylinder, 8
...Bite body, 10...Chiyotsupa table, 12...
... Conveyor belt, 14... Stopper, 16... Chipper blade, 18... One chipper folding roller, 20... Other chipper folding roller, 22...
... Impeller, 24 ... Crank shaft, 26 ... Lever, 28 ... Crank, 30 ... Fixed shaft, 32 ...
...Other roller shaft, 34...Lever bearing, 36
... Compression spring, 38 ... Nut for adjusting the pressing force of the other roller, 40 ... Nut for adjusting the gap between the other roller with respect to one roller, 52, 54 ... Edge of chopper table, 55 ... Gap, 56,
58...Chopper table, 60...One chipper folding roller, 62...Other chipper folding roller, 64...Fixed shaft, 66...Pulley of one roller, 68...Movable shaft, 70...Other roller pulley, 72... fulcrum shaft of the movable shaft 68, 74...
...Lever bearing for the pulley of the other roller, 7
6... Bulging portion of lever bearing 74, 78... Compression spring for movable shaft 68, 80... One nip pulley, 82... Other nip pulley, 84... Fixed shaft, 86... Movable shaft, 88... Lever bearing for the other nip pulley, 90... fulcrum shaft of movable shaft 86, 92... bulge of lever bearing 92, 94
. . . Compression spring for movable shaft 86, 96 . . . Impeller, 97 . V-belt, 108...
Tension pulley, 109...signature stopper, 1
10... The other endless V-belt, 111... Tension pulley, 112... Signature, 114... Conveyor belt, 116... Chopper blade.

Claims (1)

[Scope of Claim for Utility Model Registration] A chopping blade, a chopping table having a gap into which the chopping blade enters, a pair of chopping folding rollers installed opposite to each other below the chopping table, and an impeller installed below the chopping folding roller. In a chopper folding device that folds a signature conveyed on a chopper table via a conveyor belt by the vertical movement of the chipper blade and the rotational movement of the chipper folding roller, coaxial and pulleys set to have approximately the same outer diameter are provided, and a pair of nip pulleys are provided directly below each of the chopper folding rollers in correspondence with each of the pulleys, and the nip pulley for one roller is pivotally supported on a fixed shaft, and the nip pulley for one roller is supported on a fixed shaft while the other A nip pulley for the roller is pivotally supported on a movable shaft, an impeller is provided below one of the nip pulleys that is pivotally supported on a fixed shaft, and a pulley is provided on this impeller coaxially with the nip pulley and set to approximately the same outer diameter. An endless belt is suspended between the pulleys of the one chopper folding roller, the nip pulley, and the pulley of the impeller via a tension pulley; An endless belt is suspended, and each of the movable shafts of the pulley and nip pulley of the other chopper folding roller is held by means of elastically pressing against the opposing pulley of the chopper folding roller and the nip pulley, and these A chip folding device in which opposing endless belts are elastically brought into sliding contact between the pulleys of a pair of chip folding rollers and a nip pulley.