JP2548897Y2 - Suction car equipment for sheet-fed printing press - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention reduces the running inertia of the printing paper conveyed to the discharge section of a sheet-fed printing press, and eliminates the damage of the printing paper at the time of discharging the paper. The present invention relates to a suction wheel device of a sheet-fed printing press that improves alignment.

<Conventional technology> In a sheet-fed printing press, the printing paper conveyed while being held by the claw of the conveyance chain is released from the claw grip at the conveyance end portion, falls, and is stacked while the front end is aligned by the paper contact. It is loaded on a table. However, the printing paper is conveyed at a high speed, is released from the grip, and collides with the paper pad with a large running inertia, so that the paper edge is damaged,
Poor alignment when loading.

Therefore, conventionally, the paper discharge unit is provided with a suction wheel device provided with a suction wheel that rotates at a peripheral speed lower than the transport speed of the printing paper, and the printing paper to be discharged is slid in contact with the peripheral surface of the suction wheel. In this case, the running inertia of the paper is attenuated by suction.

<Problems to be Solved by the Invention> In the conventional suction wheel device, in the case of thin paper, the paper is bent, so that the contact area with the suction wheel is large, and a desired suction force can be obtained. Even if the paper is sucked by the car, the paper does not bend sufficiently, and the paper almost comes into line contact with the peripheral surface of the suction car. Therefore, there is a problem that the suction force is insufficient and the effect of the apparatus cannot be expected.

<Means for Solving the Problems> The suction wheel device of the sheet-fed printing press according to the present invention is provided at the paper discharge section of the sheet-fed printing press and slidably comes into contact with the discharged printing press and discharge speed of the printing paper. A suction wheel rotating at a lower peripheral speed than the suction wheel, a suction port provided on the peripheral surface of the suction wheel in communication with the suction means, and a cover for projecting a part of the peripheral surface of the suction wheel to cover the suction wheel portion. In the suction wheel device of a sheet-fed printing press provided with: A plurality of air inlets provided in a member communicating with the means and connected to and supported by the suction axle and arranged perpendicular to the conveying direction of the printing paper; and the printing paper among the plurality of air inlets does not face each other. Stop the intake of the intake port and set the intake action of the intake port to the paper width. And adjusting means for adjusting according to the condition.

<Operation> The printing paper conveyed to the paper discharge unit of the sheet-fed printing press is sucked by a suction port provided on a peripheral surface of a suction wheel communicating with the suction means together with the operation of the suction means, and the printing paper is printed. The speed is reduced by sliding on a suction wheel that rotates at a peripheral speed lower than the paper unloading speed.

Further, with the operation of the suction means, the printing paper is sucked from the suction port located approximately the same as the suction wheel with respect to the printing paper, so that sliding contact of the printing paper with the suction wheel is ensured, and the printing paper becomes more Slow down further.

<Embodiment> Hereinafter, an embodiment of a suction wheel device of a sheet-fed printing press according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 3 which is a side view of the paper discharge unit of the sheet-fed printing press according to this embodiment, a pair of sprockets 13 and 14 (FIG. A sprocket pair (not shown) on the middle and back sides is rotatably provided, and a paper discharge chain 15 is stretched between the sprockets 13 and 14, respectively. Between these paper discharge chains 15, claw rods 16 are wound around at regular intervals, and each claw rod 16 is provided with a holding claw device (hereinafter simply referred to as a claw) including a claw and a claw base (not shown). Have been.

Therefore, paper printed by a printing apparatus body (not shown)
The sheet 17 is conveyed in the direction of the arrow A in the drawing by the travel of the paper discharge chain 15 while being held by the claws, is released from the claws at the conveyance end portion, and is dropped and loaded on the paper stacking table 18. Also
Reference numeral 19 denotes a paper pad for aligning the paper 17 to be carried out by bringing the front end thereof into contact, and reference numeral 20 denotes a laterally aligning plate for applying vibration to the paper 17 loaded on the paper stacking table 18 for alignment.

A suction wheel device 21 for reducing the running inertia of the paper 17 that is carried out and transferred to the paper stacking platform 18 is provided in front of the transport end portion of the paper discharge unit 11. FIG. 2 is a plan view showing a partially cut-away example of the suction wheel device 21, and FIG. 1 is a sectional view taken along the line II in FIG.

As shown in these figures and FIG.
The suction axle 23 is provided below the paper discharge chain 15 located in front of the transport end portion in the drawing and in a state substantially orthogonal to the paper transport direction (the direction of arrow A). Further, an air pipe 25 communicating with a suction means (not shown) through a curved pipe 24 is provided.
Are arranged on the upstream side in the transport direction with respect to the suction axle 23 and are arranged in parallel with the suction axle 23.

A plurality of introduction holes 26 are formed in the air pipe 25 along the longitudinal direction of the air pipe 25. One end of a bracket 28 in which an intake passage 27 communicating with each of the introduction holes 26 is provided is fitted to the air pipe 25 in these introduction holes. Further, the other end of the bracket 28 is fitted to the suction axle 23. The other end of the bracket 28 is connected to the suction axle 23
And a cylindrical suction wheel 22 is rotatably fitted to the disk-shaped portion 29.

One end of the suction wheel 22 is fixed to a suction axle 23,
22 rotates together with a suction axle 23 rotated by a drive source (not shown). Rotation direction of suction wheel 22 (direction of arrow R in the figure)
Is in the same direction as the unloading direction of the paper 17 (the direction of the arrow A in the figure), but the peripheral speed of the suction wheel 22 is lower than the unloading speed of the paper 17. Acts to decelerate. A plurality of suction ports 31 are formed in the suction wheel 22 along the circumferential direction of the suction wheel 22, and each of the suction ports 31 is provided with a suction flow formed in the bracket 28 described above. The suction port 31 communicates with the passage 27 so that air can be sucked in through the suction port 31.

Therefore, if the suction axle 23 is driven and the suction means is operated, each suction wheel 22 rotates and air is sucked from the suction ports 31 of these suction wheels 22. As a result, the conveyed paper 17 is sucked toward the suction port 31 of the suction wheel 22 and slidably contacts the outer periphery of the suction wheel 22 to be decelerated.

However, in such a deceleration with only the suction wheel 22,
If the paper 17 to be carried out is thick and inflexible, the suction wheel 22
As the paper 17 is deformed by the suction of the air and cannot be sucked, sufficient deceleration is not performed.

Therefore, in the present invention, the following auxiliary intake means is provided. That is, the paper 17 is determined based on the respective suction wheels 22.
The air pipe 25 on the upstream side in the carry-out direction (the direction of arrow A)
An intake bracket 32 is fitted. Paper that comes out
The end plate 33 of the intake bracket 32 opposed to 17 has a plurality of intake ports 34 formed therein, and the intake ports 34 communicate with an intake passage 35 formed in the intake bracket 32. The intake passage 35 further communicates with connection pipes 36 projecting below the respective intake brackets 32, and each of these connection pipes 36
Is connected to an intake means (not shown) via an adjustment valve 37 provided on the upper portion of the frame 12.

What is characteristic here is the intake port of the intake bracket 32 with respect to the paper 17 or the discharge chain 15 that has been carried out.
The point that the projecting position of 34 is set to be substantially the same as the projecting position of the outer periphery of the suction wheel 22. Therefore, by operating the suction means (not shown), air is suctioned from each of the suction port 31 of the suction wheel 22 and the suction port 34 of the suction bracket 32. The paper 17 is brought into sliding contact with the suction wheel 22 by the suction action, and is rotated at a peripheral speed slower than the unloading speed of the paper 17.
Decelerated by 22 turning forces.

At this time, since the suction force of the suction wheel 22 is supplemented by the suction bracket 32 as another suction means, the thick paper 17
Also for carrying out, etc., a sufficient and secure sliding contact state with the suction wheel 22 is realized, and suitable deceleration is performed. Further, the suction port 31 of the suction wheel 22 and the suction port 34 of the suction bracket 32
Since it is located at approximately the same position as
The paper 17 is not deformed so as to smoothly follow the outer peripheral surface of the suction wheel 22 without causing unnecessary and large local deformation. In addition, the suction port 34 is connected to the suction axle 23 via the air pipe 25 and the bracket 28, and can move integrally with the movement of the suction wheel 22 in the paper conveyance direction and the reverse direction. Since the positional relationship (linear and close) with the suction port 31 does not change, a sufficient suction force is maintained even when the paper size (particularly the length in the paper transport direction) is changed, and even when the thick paper 17 is used, the suction wheel Suction and conveyance can be reliably bent along the peripheral surface of 22 and the switching operation is easy. That is, if the paper size (particularly, the length in the paper transport direction) becomes smaller, the suction port 31 and the suction port 34 are moved with the movement of the suction wheel 22 in the paper transport direction if the configuration is such that only the suction wheel 22 can be moved. Away from both mouths 31,34
Therefore, the paper cannot easily bend along the peripheral surface of the suction wheel 22 and cannot respond to the thick paper 17 at all.

Further, in the present embodiment, since the intake system of the suction vehicle 22 and the intake system of the intake bracket 32 are configured independently of each other,
For example, when relatively thin paper 17 or the like is carried out, the intake of the intake bracket 32 may be stopped, and the speed may be reduced by the intake of only the suction wheel 22.

Further, when the width of the paper 17 is increased or decreased by handling various types of paper 17, the respective intake brackets 32
By operating the adjustment valve 37 provided for the intake air, unnecessary intake of the intake bracket 32 to which the paper 17 does not face may be stopped. That is, if suction is performed without paper, a large amount of air enters from that portion, and a suction action cannot be obtained in a portion where paper is present, which is prevented.
In this way, an effective intake action can always be maintained at a high level. Further, by adjusting these adjusting valves 37, fine adjustment of the suction force can be performed in each of the intake brackets 32 according to the paper quality of the paper 17.

Reference numeral 38 in FIG. 1 denotes a cover for covering the other portions in a state where the suction wheel 22 and the intake bracket 32 described above are exposed, and is omitted in FIG.

By the way, in the present embodiment, the mounting position of the intake bracket 32 is the air pipe 25 on the upstream side in the carrying-out direction of the paper 17 with respect to each suction wheel 22. However, for example, it is located between the respective suction wheels 22. Of course, the air pipe 25 or the suction axle 23 may be used.

<Effects of the Invention> According to the present invention, the printing paper is sucked and brought into sliding contact with the suction port provided on the outer peripheral surface of the suction wheel, and the suction wheel is rotated at a peripheral speed lower than the printing paper unloading speed. In addition, the printing paper is decelerated, and the suction port is provided so as to protrude substantially the same as the suction wheel with respect to the printing paper, so that the suction force for sucking the printing paper toward the suction wheel is sufficient. Therefore, the speed at which the printing paper is unloaded can be significantly reduced, thereby preventing the printing paper from hitting. Furthermore, by the suction port and the suction port of the suction wheel that protrudes almost the same as the suction wheel,
Since the printing paper is sucked while deforming very smoothly and comes into sliding contact with the suction wheel, it is possible to prevent the backing of the printing paper from occurring. In addition, since the suction system and the suction system of the suction port are made independent and the suction function of the suction port can be adjusted according to the paper width, an effective and efficient suction function is achieved according to the paper quality and paper size. You.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of the suction wheel device according to the present invention (a view taken along the arrow II in FIG. 2), and FIG. 2 is a partially cutaway view of the embodiment. FIG. 3 is a schematic side view showing a paper discharge unit of the sheet-fed printing press. 11 is a paper discharge unit, 12 is a frame, 15 is a paper discharge chain, 16 is a claw rod, 17 is paper, 18 is a paper stack, 19 is a paper pad, 21 is a suction car device, 22 is a suction car, and 23 is suction. An axle, 25 is an air pipe, 26 is an introduction hole, 27 and 35 are intake passages, 28 is a bracket, 31 is a suction port, 32 is an intake bracket, and 34 is an intake port.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Hideaki Tsukimoto 4-5-1 Higashi, Toride-shi, Ibaraki Pref. Komori Ink Printing Machinery Co., Ltd. (72) Toshio Miyamoto 4-5-1 Higashi, Toride-shi, Ibaraki No. Komori Printing Machinery Co., Ltd. Toride Factory (72) Inventor Shoichi Ichimura 4-5-1 Higashi, Toride-shi, Ibaraki Prefecture Komori Printing Machinery Co., Ltd. Toride Factory (72) Inventor Yutaka Fuchi, Todo-shi Higashi 4 No. 5-1 Komori Printing Machine Co., Ltd. Toride Factory (56) References JP-A-48-20610 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] A suction wheel provided at a paper discharge section of a sheet-fed printing press and slidably in contact with the conveyed printing paper and rotating at a peripheral speed lower than the speed of discharging the printing paper; A suction port provided in communication with a suction means on a surface of the suction wheel, and a cover for projecting a part of a peripheral surface of the suction wheel to cover the suction wheel portion, wherein the printing paper And is provided on a member which is substantially the same as the suction wheel and protrudes from the cover and communicates with suction means provided independently of the suction means for suction vehicle and is connected and supported by the suction wheel axle. A plurality of air inlets arranged perpendicular to the transport direction of the printing paper, and stopping the air suction of the air inlet not facing the printing paper out of the plurality of air inlets to reduce the suction action of the air inlet to the paper width. A sheet-fed stamp comprising adjusting means for adjusting the position of the sheet. Machine of suction wheel unit.