CN112810327A

CN112810327A - Printing device

Info

Publication number: CN112810327A
Application number: CN202010046559.3A
Authority: CN
Inventors: 佐藤和茂; 佐佐木步; 武藤雅俊; 武藏优努
Original assignee: Miyakoshi Printing Machinery Co Ltd
Current assignee: Miyakoshi Printing Machinery Co Ltd
Priority date: 2019-11-15
Filing date: 2020-01-16
Publication date: 2021-05-18
Anticipated expiration: 2040-01-16
Also published as: JP2021079582A; CN112810327B; JP7074297B2

Abstract

The invention provides a printing device which can select and use the printing of a rotating part and the printing of an ink jetting part without enlarging the device. The present invention provides a printing device, comprising: a paper feeding unit for supplying a printing medium; a printing unit for printing an object to be printed; a rotary unit and an ink jet unit which are detachable from the printing unit; and a recovery unit configured to recover the printing medium printed by the printing unit, wherein the printing unit is provided with a rotation unit or an ink jet unit, and when the rotation unit is provided with the printing unit, the rotation unit supplies ink for rotation from the ink supply unit to the plate cylinder to perform printing on the printing medium via the rotation unit, and when the ink jet unit is provided with the printing unit, the ink jet unit supplies ink for ink jet from the ink supply unit to the printing head to perform printing on the printing medium via the ink jet unit.

Description

Printing device

Technical Field

The present invention relates to a printing apparatus, and more particularly, to a printing apparatus capable of selectively using printing by a rotation unit and printing by an ink jet unit.

Background

As a plate printing apparatus, a so-called rotary press is known.

In the case of a 3-cylinder rotary printing press, for example, an image is transferred from a plate cylinder to a blanket cylinder, and a printing object is passed between the blanket cylinder and an impression cylinder to be rotated at a high speed to perform printing, and thus a large number of identical images can be printed in a short time.

On the other hand, an inkjet printing apparatus is known as a plateless printing apparatus.

The inkjet printing apparatus ejects ink in a droplet form from a printing head to a printing object to perform printing, and is characterized in that printing can be performed based on variable data.

In general, printing based on variable data by an inkjet printing apparatus is difficult to perform by a rotary printing machine, and printing of a large number of identical images in a short time by a rotary printing machine is difficult to perform by an inkjet printing apparatus.

For these reasons, in order to meet the diversified printing demands, the printing industry needs to have both a rotary press and an inkjet printing apparatus.

However, it is not practical to provide both a rotary printing machine and an inkjet printing apparatus, because the burden is large in terms of cost and space.

In this regard, a product in which an ink jet printing mechanism is attached to a rotary press has been developed.

For example, a rotary press is known which includes a paper feed unit, a printing unit, and a processing unit, is provided with an inkjet printing mechanism (additional printing device), and is provided with a continuous paper moving path from the paper feed unit to the processing unit via a printing cylinder of the printing unit (see, for example, patent document 1).

Documents of the prior art

Patent documents:

patent document 1: japanese patent laid-open No. Hei 10-286939

Disclosure of Invention

Problems to be solved by the invention

However, the rotary machine described in patent document 1 requires a space for adding an ink jet printing mechanism, and has a disadvantage that the apparatus itself becomes large.

Further, there is a disadvantage that the additional ink jet printing mechanism becomes in the way when only the printing cylinder is intended to be used, and the printing cylinder becomes in the way when only the ink jet printing mechanism is intended to be used.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a printing apparatus capable of selectively using printing by a rotation section and printing by an ink jet section without increasing the size of the apparatus itself.

Means for solving the problems

The present inventors have made extensive studies to solve the above-mentioned problems, and as a result, have found that the above-mentioned problems can be solved by providing an ink jet unit which is miniaturized so as to be attachable to a printing unit, and a rotation unit which is attachable to the printing unit, and have completed the present invention.

(1) The present invention provides a printing apparatus, comprising: a paper feeding unit for supplying a printing medium; a printing unit for printing an object to be printed; a rotary unit and an ink jet unit which are detachable from the printing unit; and a recovery unit for recovering a printing medium printed in the printing unit, wherein the printing unit is provided with a rotation unit having at least a plate cylinder or an ink jet unit having at least an ink jet ink supply unit and a printing head unit, and the printing unit has a housing unit in which the ink jet ink supply unit is built, and when the rotation unit is mounted in the printing unit, the rotation ink is supplied from the ink jet ink supply unit to the plate cylinder to print the printing medium by the rotation unit, and when the ink jet unit is mounted in the printing unit, the ink jet ink is supplied from the ink jet ink supply unit to the printing head unit to print the printing medium by the ink jet unit.

(2) According to the printing apparatus described in (1), the ink supply unit for rotary use of the present invention includes at least an ink fountain and an ink form roller for supplying ink supplied from the ink fountain to the plate cylinder, and the ink form roller is movable in a direction away from the rotary unit or the ink jet unit attached to the printing unit.

(3) According to the printing apparatus described in (1) or (2), the present invention includes a plurality of printing units, an ink ejecting unit is attached to at least one of the plurality of printing units, and a rotation unit is attached to the most upstream side of the plurality of printing units.

(4) According to the printing apparatus described in (3), the ink ejecting section of the present invention further includes a cooling roller on the upstream side of the printing head section, and the cooling roller cools the printing object.

(5) According to the printing apparatus described in any one of (1) to (4), the ink ejecting section of the present invention further includes a mark sensor on the upstream side of the printing head section, the mark sensor detecting a mark printed by the rotary section on the upstream side of the ink ejecting section.

(6) According to the printing apparatus described in any one of (1) to (5), the ink jet unit of the present invention further includes a support frame portion that supports the ink jet ink supply unit and the printing head unit, and a rail portion that can be extended laterally, and the support frame portion can slide from the printing position to the working position along the extended rail portion.

(7) According to the printing apparatus described in any one of (1) to (6), the ink jet section of the present invention further includes a cleaning tray provided with a cleaning-tray-side pin and a storage tray provided with a storage-tray-side pin, and the printing head section includes: the printing head includes a cleaning-disc-side pin receiving hole to which a cleaning-disc-side pin can be attached, a storage-disc-side pin receiving hole to which a storage-disc-side pin can be attached, a 1 st detection sensor for detecting the cleaning-disc-side pin attached to the cleaning-disc-side pin receiving hole, and a 2 nd detection sensor for detecting the storage-disc-side pin attached to the storage-disc-side pin receiving hole, and the cleaning tray and the storage tray are detachable from and attachable to the printing head.

(8) The printing apparatus according to the present invention as set forth in (7) further includes a control device for controlling storage of the printing head, the printing operation, and the cleaning operation based on the detection results of the 1 st detection sensor and the 2 nd detection sensor.

(9) According to the printing apparatus described in (6), the ink jet unit of the present invention further includes a cleaning tray provided with a cleaning-tray-side pin, a storage tray provided with a storage-tray-side pin, and a proximity sensor, and the printing head unit includes: the printing apparatus includes a cleaning-disc-side-pin receiving hole to which a cleaning-disc-side pin can be attached, a storage-disc-side-pin receiving hole to which a storage-disc-side pin can be attached, a 1 st detection sensor for detecting the cleaning-disc-side pin attached to the cleaning-disc-side-pin receiving hole, and a 2 nd detection sensor for detecting the storage-disc-side pin attached to the storage-disc-side-pin receiving hole, wherein the cleaning tray and the storage tray are detachable from the printing head, and the proximity sensor detects that the support frame portion is located at the printing position.

(10) The printing apparatus according to (9) of the present invention further includes a control device for controlling storage, a printing operation, and a cleaning operation of the printing head based on detection results of the proximity sensor, the 1 st detection sensor, and the 2 nd detection sensor.

Effects of the invention

In the printing apparatus of the present invention, the rotation portion and the ink ejection portion are provided, and the rotation portion or the ink ejection portion can be alternatively attached to the printing portion, so that printing by the rotation portion and printing by the ink ejection portion can be selectively used without increasing the size of the apparatus itself. Thus, the ink ejecting section does not get in the way when the ink ejecting section is used, and the wheel rotating section does not get in the way when the ink ejecting section is used.

Further, since printing by the rotary unit and printing by the ink jet unit can be performed by the same printing apparatus, it is not necessary to prepare a rotary printing machine and an ink jet printing apparatus at the same time, which is also a significant cost advantage. For example, after the same image is printed on the object to be printed by the rotation unit, the rotation unit may be replaced with the ink jet unit, and the variable information such as the addressee and the one-dot type of the logo may be applied by the ink jet unit.

Further, since the printing section has the rotary ink supply section, printing can be performed by using the above-described members when the rotary section is mounted on the printing section. As the printing apparatus of the present invention, a conventional rotary press can be used.

In the printing apparatus of the present invention, when the ink form roller is movable in a direction away from the rotation portion or the ink ejection portion attached to the printing portion, the ink form roller can be moved away from the rotation portion or the ink ejection portion when the rotation portion or the ink ejection portion is attached and detached, thereby preventing the ink form roller from interfering with the above members.

Further, when printing is performed by the ink jet section, the unused ink form rollers can be kept in a state of being avoided.

In the printing apparatus of the present invention, by providing a plurality of printing portions, it is possible to perform printing at any one of a plurality of positions by the rotation portion, a plurality of positions by the ink ejection portion, and a combination of the rotation portion and the ink ejection portion.

In order to avoid the attachment/detachment operation of the rotation unit or the ink jet unit as much as possible, it is preferable to select printing using a combination of the rotation unit and the ink jet unit among the above options.

In this case, it is preferable that the ink ejecting unit is attached to at least one of the plurality of printing units, and the rotation unit is attached to the most upstream side.

Thus, the position printed by the ink jet unit can be adjusted according to the printing by the rotation unit. As a result, printing misalignment between the two can be prevented.

For example, after printing the same image on the print medium by the upstream rotary unit, the variable information such as the recipient and the single dot printing such as the logo can be performed by the downstream ink jet unit. That is, the printing can be completed in one process.

Further, the ink ejecting section preferably includes a mark sensor on the upstream side of the printing head section. In this case, the mark printed by the upstream rotary unit can be detected by the mark sensor, and the position printed by the printing head can be instantaneously adjusted based on the detection, so that the occurrence of printing misalignment between the two can be more reliably prevented.

In the printing apparatus of the present invention, the ink ejecting section includes the cooling roller on the upstream side of the printing head section, and the temperature of the printing object can be adjusted before the printing head section performs printing on the printing object.

Further, if the temperature of the printing medium is high, the temperature of the printing head section facing the printing medium may be raised by the radiant heat, and the temperature control and viscosity control of the ink jet ink ejected from the printing head section may not be accurately performed, and the printing head section itself may not be controlled. Further, when the ink jet ink discharged from the printing head lands on the printing medium, the ink jet ink is likely to bleed or blur.

In the printing apparatus of the present invention, the support frame portion that supports the ink jet ink supply unit and the printing head portion is slid along the rail portion that can extend laterally from the printing position to the working position, whereby the ink jet ink supply unit and the printing head portion can be moved to the working position. This can improve workability in maintenance of the ink-jet ink supply unit and the printing head.

Further, since the rail portion provided in the ink ejecting portion extends laterally, there is an advantage that it does not cause any trouble when performing normal printing.

In the printing apparatus of the present invention, the cleaning is performed in a state where the cleaning tray is attached to the printing head, and the printing head is stored in a state where the storage tray is attached to the printing head.

At this time, the 1 st detection sensor detects the cleaning tray side pin of the cleaning tray mounted in the cleaning tray side pin receiving hole of the printing head, and thereby the detachable state of the cleaning tray can be recognized.

Similarly, the storage tray can be recognized in the attached/detached state by detecting the storage tray side pin of the storage tray mounted in the storage tray side pin receiving hole of the printing head by the 2 nd detection sensor.

Further, by providing the printing apparatus with the control device, it is possible to control the storage of the printing head, the printing operation, and the cleaning operation based on the detection results (i.e., the attached/detached states of the trays) of the 1 st detection sensor and the 2 nd detection sensor.

As described above, by controlling the storage of the printing head, the printing operation, and the cleaning operation by the control device, it is possible to prevent erroneous operation and erroneous operation.

Drawings

Fig. 1 is a side view schematically showing an embodiment of a printing apparatus according to the present invention.

Fig. 2 (a) is an enlarged side view showing one side of the rotation unit of the printing apparatus according to the present embodiment, and fig. 2 (b) is a side view showing the other side of the rotation unit shown in fig. 2 (a).

Fig. 3 (a) is an enlarged side view showing one side of the ink ejection unit of the printing apparatus according to the present embodiment, and fig. 3 (b) is a side view showing the other side of the ink ejection unit shown in fig. 3 (a).

Fig. 4 is a sectional view of the ink ejection unit of fig. 3 taken along the line a-a.

Fig. 5 (a) is a front view showing a state in which an ink ejecting unit is attached to a printing unit of the printing device according to the present embodiment, and fig. 5 (b) is a front view showing a state in which a support frame portion is taken out from the state of fig. 5 (a).

Fig. 6 (a) is a front view showing a state in which a cleaning tray is attached to a printing head portion of the printing apparatus according to the present embodiment, and fig. 6 (b) is a plan view showing a state in which the cleaning tray is attached to the printing head portion shown in fig. 6 (a).

Fig. 7 (a) is a front view showing a state in which a storage tray is attached to a printing head of the printing apparatus according to the present embodiment, and fig. 7 (b) is a plan view showing a state in which the storage tray is attached to the printing head shown in fig. 7 (a).

Fig. 8 is a front view for explaining an example of a method of attaching and detaching the ink ejecting unit to and from the printing unit in the printing apparatus according to the present embodiment.

Description of the reference numerals

1: paper feeding part

100: printing device

2: recovery part

3: printing part

30: ink supply part for rotary wheel

31: ink fountain

32: inking roller group

33: inking roller

35: outer shell part

35 a: rear surface part

35 b: bottom surface part

36 a: track for dismounting

36 b: connecting rail

37: water bucket

38: ultraviolet ray irradiator

4: wheel rotating part

41: printing plate cylinder

42: rubber blanket cylinder

43: impression cylinder

45 a: frame bottom for wheel

45 b: front surface part of frame for wheel rotation

45 d: rear surface part of frame for wheel turning

46: fixing piece

46 a: the 1 st hole part

46 b: the 2 nd hole part

5: ink jet unit

51: printing head

52: ink supply part for ink jet

53 a: cooling roller

53 b: discharge guide roller

54: mark sensor

54 a: sensor guide rail

54 b: base part

55 a: ink jet frame bottom

55 b: front surface part of ink-jet frame

55 d: rear surface part of frame for ink jet

55 e: protective cover

56: support frame

61: main body part

62: cylindrical part

62 a: internal flow path

62 b: external flow path

63: rotary joint

64 a: route-removing pipe

64 b: loop pipe

70 a: ink box

70 b: pump and method of operating the same

70 c: ink filter

71: track part

72: cable drag chain

73 a: no. 1 side wall part pin

73 b: no. 1 support frame pin receiving hole

74 a: no. 2 support frame pin

74 b: no. 2 side wall pin receiving hole

75: clamping part

76 a: proximity sensor

76 b: detecting body

77: supporting plate

81: cleaning tray

81 a: side pin of cleaning disc

81 b: side pin receiving hole of cleaning disc

81 c: 1 st detection sensor

81d, 82 d: screw nail

82: pipe-protecting tray

82 a: side pin of storage disc

82 b: pipe-keeping disc side pin bearing hole

82 c: no. 2 detecting sensor

82e, the ratio of: liner pad

B1: no. 1 support

B11: no. 1 pin

B12: no. 1 eccentric hole part

B2: no. 2 support

B21: no. 2 pin

B22: 2 nd eccentric hole part

C: piping

C1: 1 st support part

C2: 2 nd support part

E1: eccentric shaft

E2: eccentric shaft for wheel

F1, F2: frame for wheel turning

F3, F4: frame for ink jet

L1: control rod

L2: control rod for wheel

M: stay bar

P1: printing position

P2: work position

R1: unreeling shaft

R2: rolling shaft

S: control substrate

T: wheel

W: printed body

W1: printing body

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings as required. In the drawings, the same elements are denoted by the same reference numerals, and redundant description thereof is omitted. The positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings unless otherwise noted. Further, the dimensional scale of the drawings is not limited to the illustrated scale.

As shown in fig. 1, a printing apparatus 100 according to the present embodiment includes: a paper feed unit 1 for feeding a printing medium W, a plurality of printing units 3 for printing the printing medium W, a rotary unit 4 and an ink jet unit 5 which are attachable to and detachable from the respective printing units 3, and a recovery unit 2 for recovering the printing medium W1 printed by the printing units 3.

As described above, the printing apparatus 100 includes not only the wheel rotation unit 4 attachable to the printing unit 3 but also the ink ejection unit 5 attachable to the printing unit 3. Therefore, in the printing apparatus 100, the rotary unit 4 and the ink ejection unit 5 can be selectively mounted for each printing unit 3.

In the printing apparatus 100 of the present embodiment, the printing medium W supplied from the paper feed unit 1 is printed in each printing unit 3 and collected in the collection unit 2.

In this case, in the printing apparatus 100, the rotation unit 4 is mounted on the upstream side and the ink ejection unit 5 is mounted on the downstream side of the plurality of printing units 3. Therefore, the printing apparatus 100 can perform printing by any one of printing by the upstream-side rotary unit 4 alone, printing by the downstream-side ink jet unit 5 alone, and printing by a combination of the upstream-side rotary unit 4 and the downstream-side ink jet unit 5. Therefore, in this case, even when a printing lot having a different printing method is replaced, the rotation unit 4 or the ink ejection unit 5 does not need to be changed, and printing can be directly handled, and the work of attaching and detaching the rotation unit 4 or the ink ejection unit 5 to and from the printing unit 3 can be saved.

In the present specification, the upstream side refers to the paper feeding portion 1 side which is the upstream side in the transport path of the print medium W, and the downstream side refers to the recovery portion 2 side which is the downstream side in the transport path of the print medium W.

In the printing apparatus 100, since the ink ejection unit 5 is attached to at least one of the plurality of printing units 3 and the rotary unit 4 is attached to the most upstream side of the plurality of printing units 3, the position at which the ink ejection unit 5 on the downstream side prints on the print target W can be adjusted in accordance with the printing of the print target W by the rotary unit 4 on the upstream side. As a result, printing misalignment between the two can be prevented. Further, with respect to specific examples of this point, refer to the following.

The paper feed unit 1 is a portion for supplying the printing medium W.

Here, the printing medium W is not particularly limited, and a commercially available product can be appropriately used. Specific examples thereof include paper, film, and fabric.

In the paper feeding unit 1, the printing medium W is wound around the unwinding shaft R1, and when the printing medium W is pulled out, the unwinding shaft R1 rotates in the unwinding direction (for example, clockwise direction) to sequentially supply the printing medium W.

The printing unit 3 is a portion for printing on the printing target W. As described above, in the printing apparatus 100, the rotary unit 4 is attached to the upstream printing unit 3, and the ink ejection unit 5 is attached to the downstream printing unit 3.

First, a case where the rotation unit 4 is mounted on the printing unit 3 will be described (see the left printing unit 3 in fig. 1).

The printing unit 3 includes a rotation ink supply unit 30 and a housing unit 35 in which the rotation ink supply unit 30 is built.

The rotation ink supply unit 30 includes: an ink fountain 31, an inking roller group 32 that transfers ink supplied from the ink fountain 31, and an ink form roller 33 for supplying ink supplied from the inking roller group 32 to a plate cylinder 41.

The inking roller group 32 includes a dampening roller group that supplies dampening solution from the fountain 37 to the plate cylinder 41. The ink fountain 31, the inking roller group 32, and the ink form roller 33 are all configured in the same manner as in the conventional rotary press, and therefore, detailed description thereof is omitted.

In the printing section 3, a space is formed below the ink roller 33, and the rotation section 4 is attached thereto.

In the rotary ink supply unit 30, rotary ink is sequentially supplied from the ink fountain 31 to the inking roller group 32, from the inking roller group 32 to the inking rollers 33, and from the inking rollers 33 to the plate cylinder 41, and the rotary ink is applied to the printing surface of the printing plate (see fig. 1 and 2 (a) and 2 (b)).

Further, the ink for rotary printing is not particularly limited, and commercially available inks known for rotary printing machines can be suitably used. Further, if the commercially available ink is UV ink, it is preferable to attach a known ultraviolet irradiator 38 to the downstream side of the printing section 3 to which the rotation section 4 is attached.

As shown in fig. 2 (a) and 2 (b), the wheel rotation unit 4 includes: a plate cylinder 41, a blanket cylinder 42 in contact with the plate cylinder 41, an impression cylinder 43 in contact with the blanket cylinder 42 with a printing object W interposed therebetween, and a pair of wheel rotating frames F1, F2 supporting the plate cylinder 41, the blanket cylinder 42, and the impression cylinder 43.

The plate cylinder 41 is a cylinder (cylinder) around which a plate is wound, and is in contact with the ink form rollers 33 and the blanket cylinder 42.

The blanket cylinder 42 is a cylinder around which a blanket, usually made of rubber or resin, is wound, and is in contact with the plate cylinder 41 and the impression cylinder 43 via the object W to be printed.

The impression cylinder 43 is a cylinder for pressing the printing object W against the blanket cylinder 42, and is in contact with the blanket cylinder 42 with the printing object W interposed therebetween.

In the rotary unit 4, the ink for rotary printing adhering to the printing surface of the printing plate is transferred to the blanket cylinder 42, and is transferred (printed) from the blanket cylinder 42 to the printing object W pressed by the impression cylinder 43.

The rotation section 4 can print a large number of identical images in a short time.

The wheel turning unit 4 has wheel turning frames F1 and F2 on both sides, and the wheel turning frames F1 and F2 are plate-shaped with a constant thickness. In the present specification, the bottom surface of the turning frames F1 and F2 is referred to as "turning frame bottom surface portion 45 a", the front surface is referred to as "turning frame front surface portion 45 b", and the rear surface is referred to as "turning frame rear surface portion 45 d". The front side refers to the recovery portion 2 side, which is the downstream side in the transport path of the print medium W, and the rear side refers to the paper feed portion 1 side, which is the upstream side in the transport path of the print medium W.

In the rotary unit 4, the plate cylinder 41, the blanket cylinder 42, and the impression cylinder 43 are supported by the rotary frames F1 and F2 on both sides.

In the swivel part 4, the swivel frame rear surface parts 45d of the swivel frames F1 and F2 abut against the rear surface part 35a of the space part of the case part 35, and the swivel frame bottom surface part 45a abuts against the bottom surface part 35b of the space part of the case part 35.

At this time, a fastener 46 is attached to the outer surface of the one wheel turning frame F1 shown in fig. 2 (a), and the fastener 46 is formed in a plate shape with a portion thereof extending rearward from the wheel turning frame rear surface portion 45d of the one wheel turning frame F1. Further, a 1 st hole portion 46a is provided in a portion of the fixing member 46 extending therefrom.

A plate-like 1 st bracket B1 is attached to the same side case 35 via a 1 st support part C1. First support C1 is fixed to housing 35, and first bracket B1 is slidable in the front-rear direction with respect to first support C1 (housing 35) in a state of being supported by first support C1. Further, a 1 st pin B11 is fixed to the front side of the 1 st bracket B1, and a 1 st eccentric hole B12 is provided on the rear side.

Further, an eccentric shaft E1 attached to the housing portion 35 is inserted into the 1 st eccentric hole B12, and a 1 st pin B11 of the 1 st bracket B1 is inserted into the 1 st hole 46a of the mount 46.

On the other hand, a 2 nd pin B21 is fixed to the outer surface of the other wheel turning frame F2 shown in fig. 2 (B).

A plate-like 2 nd bracket B2 is attached to the same side case 35 via a 2 nd support part C2. Second support C2 is fixed to housing 35, and second bracket B2 is slidable in the front-rear direction with respect to second support C2 (housing 35) in a state of being supported by second support C2. The 2 nd bracket B2 is plate-shaped with a part extending forward from the rear surface 45d of the turning frame F2 on the other side, and the 2 nd hole 46B is provided in the extending part of the 2 nd bracket B2 and the 2 nd eccentric hole B22 is provided on the rear side.

Further, an eccentric shaft E1 attached to the housing 35 is inserted into the 2 nd eccentric hole B22, and a 2 nd pin B21 is inserted into the 2 nd hole 46B of the 2 nd bracket B2.

In the wheel turning unit 4, by rotating the eccentric shaft E1 by the lever L1 (see fig. 2 (a)) attached to the shaft end of the eccentric shaft E1, the 1 st bracket B1 and the 2 nd bracket B2 are pulled rearward together with the wheel turning unit 4, and are fixed in a state where the rear surface portion 45d of the wheel turning frame F1, F2 is in contact with the rear surface portion 35a of the space portion of the housing unit 35. Thereby, the positioning of the swivel part 4 in the front-rear direction with respect to the housing part 35 is performed.

The turning unit 4 is provided at a lower end thereof with a wheel T for sliding the turning unit 4, which will be described later.

Specifically, a rectangular stay M is provided from the lower end of the inner surface of the one turning frame F1 to the lower end of the inner surface of the other turning frame F2, and wheel eccentric shafts E2 are provided on both ends of the stay M (see fig. 8).

Further, the center portion of each wheel eccentric shaft E2 is attached to the stay M, and the wheels T are attached to both end sides of each wheel eccentric shaft E2.

In the wheel turning unit 4, the wheel T moves upward of the wheel turning frame bottom surface portion 45a by turning the wheel lever L2 attached to the shaft end of the wheel eccentric shaft E2, and therefore the main body of the wheel turning unit 4 moves downward and is fixed in a state where the wheel turning frame bottom surface portion 45a is in contact with the bottom surface portion 35b of the space portion of the housing unit 35. Thereby, the vertical positioning of the swivel part 4 with respect to the housing part 35 is performed.

When the wheel lever L2 is rotated so as to return, the wheel T projects below the wheel turning frame bottom surface portion 45 a.

Next, a case where the ink ejecting unit 5 is mounted on the printing unit 3 will be described (see the printing unit 3 on the right side of fig. 1).

As described above, the printing unit 3 includes the rotation ink supply unit 30 and the housing unit 35 having the rotation ink supply unit 30 built therein.

In the printing section 3, a space is provided below the ink application rollers 33, and the ink ejection section 5 is attached thereto.

That is, the printing section 3 mounted with the ink ejection section 5 is the same as the printing section 3 mounted with the rotation section 4 except that the ink ejection section 5 is mounted instead of the rotation section 4. The printing unit 3 having the ink jet unit 5 mounted thereon has the ink supply unit 30 for rotation, but is not used for printing by the ink jet unit 5.

As shown in fig. 3 (a) and 3 (b), the ink ejecting section 5 includes at least: a printing head section 51 for discharging ink for ink jet to the printing target W, an ink jet ink supply section 52 for supplying ink for ink jet to the printing head section 51, a support frame section 56 for supporting the ink jet ink supply section 52 and the printing head section 51, a rail section 71 capable of extending laterally, a cooling roller 53a for guiding and cooling the entered printing target W, a mark sensor 54 provided so as to face the cooling roller 53a with the printing target W interposed therebetween, a discharge guide roller 53b for guiding the printed printing target W1 so as to discharge the printed printing target W1, a control device (not shown) for controlling the discharge of ink for ink jet from the printing head section 51, a control board S for receiving a command from the control device, and a control board S for controlling the discharge of ink for ink jet from the printing head section 51 with at least the printing head section 51, the ink jet ink supply section 52, the support frame section 56, a guide roller, and a cooling roller 53a cooling roller for cooling the printed printing target W, A pair of ink jet frames F3 and F4 provided on the mark sensor 54, the cooling roller 53a, the discharge guide roller 53b, and the control board S.

The ink jet ink supply unit 52 is connected to the printing head 51, and includes a distribution tank that stores ink jet ink to be distributed and supplied to each of the printing heads 51.

The ink jet ink supply unit 52 may be connected to an ink cartridge 70a provided outside through a pump 70b and an ink filter 70C by a pipe C (see fig. 5). At this time, the ink for ink jet can be appropriately replenished from the ink cartridge 70a to the distribution tank of the ink for ink jet supply section 52. The ink-jet ink supply unit 52 can be attached to and detached from the external ink cartridge 70a, the pump 70b, and the ink filter 70C in one touch by a connector or the like provided in the pipe C.

The print head 51 has a plurality of print heads, and ink for jetting ink is ejected from these print heads to the printing object W.

Here, the print head may be a serial print head or a line print head, and when printing is performed by the rotary unit 4 on the upstream side, the line print head is preferably used from the viewpoint of high-speed printing.

The cooling roller 53a is a portion of the ink ejecting section 5 which is first brought into contact with the object W, and functions to guide the object W and cool the object W.

First, since the cooling roller 53a is provided upstream of the printing head 51, the temperature of the printing object W can be adjusted to a predetermined temperature before the printing object W is printed by the printing head 51.

Fig. 4 is a sectional view of the ink ejection unit of fig. 3 taken along the line a-a. That is, the mark sensor and the cooling roll of the present embodiment are partially cross-sectional views.

As shown in fig. 4, the cooling roller 53a has: a hollow cylindrical body portion 61, a cylindrical portion 62 built in the body portion 61, a rotary joint 63 attached to one end of the body portion 61, and a bypass pipe 64a and a return pipe 64b attached to the rotary joint 63.

The cooling roller 53a communicates with the inside of the body 61, the inside of the rotary joint 63, and the inside of the bypass pipe 64a and the return pipe 64 b.

In the cooling roller 53a, cooling water flows into the main body 61 through the rotary joint 63.

Specifically, in the cooling roller 53a, the cooling water flows from the outward passage 64a into the internal passage 62a of the cylindrical portion 62 via the rotary joint 63, and when it hits the other end of the body portion 61, it is guided to the external passage 62b of the cylindrical portion 62 (between the outer surface of the cylindrical portion 62 and the inner surface of the body portion 61), and flows out from the external passage 62b to the return passage 64b via the rotary joint 63.

As described above, since the cooling roller 53a is configured to return and circulate the cooling water, the printing object W in contact with the cooling roller 53a can be efficiently cooled.

Further, since the cooling roller 53a allows the cooling water to flow in and out on the side of the ink ejecting unit 5, maintenance and the like are facilitated, and pipes and the like can be gathered together.

The ink ejection section 5 includes: a sensor rail 54a supported by the ink jet frames F3 and F4 and extending in the width direction of the print medium W, a base 54b attached slidably along the sensor rail 54a, and a mark sensor 54 attached to the base 54 b.

The mark sensor 54 is mounted at a position facing the cooling roller 53a with the print medium W interposed therebetween (see fig. 3).

Returning to fig. 3 (a) and 3 (b), the mark sensor 54 can detect the mark printed on the printing medium W by the rotary unit 4 on the upstream side of the ink ejection unit 5.

At this time, the mark sensor 54 can be slid along the sensor rail 54a according to the position of the mark printed on the printing target W.

The mark sensor 54 is provided on the upstream side of the print head 51 in the ink ejecting section 5. Therefore, when a control device (not shown) provided outside receives a detection signal detected by the mark sensor 54 on the upstream side, the control device can issue a command to the printing head 51 on the downstream side based on the detection signal to start printing at a predetermined timing from a predetermined position.

In this way, the control board S receives a command from the control device, and adjusts the position and timing at which the printing head 51 starts printing. This prevents a misalignment between printing by the rotation unit 4 and printing by the ink ejection unit 5.

In the ink jet unit 5, ink for ink jet is supplied from the ink jet ink supply unit 52 to the print head of the print head 51, and the ink for ink jet is ejected from the print head 51 to the printing object in accordance with the instruction of the control device.

The ink jet unit 5 can perform printing based on variable data.

The ink for ink jet printing is not particularly limited, and commercially available inks used in known ink jet printing apparatuses can be suitably used. Examples thereof include YMCK water-based dyes, water-based pigments, oil-based dyes, and oil-based pigments. Further, when the commercially available ink is UV ink, it is preferable to attach a known ultraviolet irradiator 38 (see fig. 1) to the downstream side of the printing unit 3 to which the ink ejection unit 5 is attached.

The ink ejecting section 5 has ink ejecting frames F3 and F4 on both sides, and the ink ejecting frames F3 and F4 are plate-shaped having a constant thickness. In the present specification, the bottom surface of the ink jet frames F3 and F4 is referred to as "ink jet frame bottom surface portion 55 a", the front surface is referred to as "ink jet frame front surface portion 55 b", and the rear surface is referred to as "ink jet frame rear surface portion 55 d".

In the ink jet unit 5, at least the cooling roller 53a and the sensor rail 54a are supported by the ink jet frames F3 and F4 on both sides (see fig. 4).

Here, in the ink ejecting section 5, a hood 55e is provided in a ceiling portion between the ink ejecting frames F3 and F4 on both sides. Therefore, water droplets, floating ink mist, paper dust, and the like adhering to the inside of the printing portion 3 (for example, the rotary ink supply portion 30) can be prevented from entering the inside of the ink ejection portion 5.

Further, since the ink ejecting section 5 is provided with the protective cover 55e, the ink form roller 33 can be moved in a direction away from the ink ejecting section 5 attached to the printing section 3, and interference with the protective cover 55e is avoided. The moving means is not particularly limited, and for example, a method of moving the ink form roller 33 by an air cylinder may be mentioned.

Further, when printing is performed by the ink jet section 5, the ink form roller 33 is not used, and therefore, the ink form roller can be maintained in a state of avoiding the ink form roller.

The ink form rollers 33 in the printing portion 3 shown in fig. 2 are not moved, and the ink form rollers 33 in the printing portion 3 shown in fig. 3 are moved in a direction away from the ink ejection portion 5.

In the ink jet unit 5, similarly to the rotary unit 4, the ink jet frame rear surface portions 55d of the ink jet frames F3 and F4 are in contact with the rear surface portion 35a of the space portion of the case unit 35, and the ink jet frame bottom surface portion 55a is in contact with the bottom surface portion 35b of the space portion of the case unit 35.

At this time, similarly to the above-described turning section 4, the fixing member 46 is attached to the outer surface of the ink jet frame F3 on the one side shown in fig. 3 (a).

Similarly to the above-described turret 4, a 2 nd pin B21 is fixed to the outer surface of the other ink jet frame F4 shown in fig. 3 (B).

Therefore, by rotating the eccentric shaft E1 from this state by the lever L1 (see fig. 3 a) attached to the shaft end of the eccentric shaft E1, the 1 st holder B1 and the 2 nd holder B2 are pulled rearward together with the ink ejecting section 5, and are fixed in a state where the ink ejecting frame rear surface portions 55d of the ink ejecting frames F3 and F4 are in contact with the rear surface portion 35a of the space portion of the case section 35, as in the case of the above-described pivot section 4. Thereby, the ink ejecting section 5 is positioned in the front-rear direction with respect to the housing section 35.

The ink ejecting section 5 is provided with a wheel T at the lower end thereof for sliding the ink ejecting section 5, as in the wheel rotating section 4.

Specifically, a rectangular stay M is provided from the lower end of the inner surface of the one ink jet frame F3 to the lower end of the inner surface of the other ink jet frame F4, and wheel eccentric shafts E2 are provided on both ends of the stay M (see fig. 8).

In the ink jet unit 5, the wheel T moves upward of the ink jet frame bottom surface portion 55a by rotating the wheel lever L2 attached to the shaft end of the wheel eccentric shaft E2, and therefore the main body of the ink jet unit 5 moves downward and is fixed in a state where the ink jet frame bottom surface portion 55a abuts against the bottom surface portion 35b of the space portion of the case portion 35. Thereby, the ink ejecting section 5 is positioned in the vertical direction with respect to the housing section 35.

When the wheel lever L2 is rotated to return, the wheel T projects below the ink jet frame bottom surface portion 55 a.

As described above, the rotation section 4 and the ink ejection section 5 are positioned with respect to the housing section 35 in the same manner.

As shown in fig. 5 (a) and 5 (b), in the ink jet unit 5, the support frame portion 56 is disposed between the pair of ink jet frames F3 and F4 in a state of supporting the ink jet ink supply unit 52 and the print head unit 51.

A cable drag chain 72 is attached to the ink jet unit 5, one end of the cable drag chain 72 is fixed to a pallet 77 that is spanned between the ink jet frame F3 on one side and the ink jet frame F4 on the other side, and the other end is fixed to the support frame portion 56. A pipe C for supplying the ink for ink jet from the ink cartridge 70a to the ink for ink jet supply unit 52 is inserted into the cable chain (registered trademark).

In the ink ejecting section 5, a part of one ink ejecting frame F3 is opened, and the rail section 71 can be extended from the opened part.

Further, by sliding the support frame 56 along the extended rail portion 71, the support frame 56 can be taken out from between the ink jet frames F3 and F4. That is, the support frame portion 56 can be slid from the printing position P1 at which printing is performed to the working position P2 at which maintenance and other work is performed outside the printing portion 3. The working position P2 is preferably, for example, an end position when the support frame 56 is slid along the rail portion 71 in a direction opposite to the printing position P1.

This improves the efficiency of the operations such as maintenance of the ink-jet ink supply unit 52 and the print head 51.

Further, when the support frame portion 56 is located at the printing position P1, the rail portion 71 provided in the ink ejecting portion 5 does not extend but is accommodated in the ink ejecting portion 5, and therefore, there is an advantage that it does not hinder the normal printing.

In the ink jet unit 5, the proximity sensor 76a is attached to the other ink jet frame F4, and the detector 76b (stopper) is attached to the support frame portion 56.

Therefore, the proximity sensor 76a can detect that the support frame portion 56 is located at the printing position P1 by the proximity of the detection body 76 b. That is, when the proximity sensor 76a does not detect the detection body 76b, it is described that the support frame portion 56 is not at the printing position P1.

In the ink jet unit 5, when the support frame 56 located at the working position P2 is returned to the printing position P1, the support frame 56 is positioned.

Specifically, the support frame 56 is positioned by fitting the 1 st side wall pin 73a of the ink jet frame F3 provided on one side into the 1 st support frame pin receiving hole 73b provided on one side of the support frame 56, fitting the 2 nd support frame pin 74a provided on the other side of the support frame 56 into the 2 nd side wall pin receiving hole 74b provided on the other side of the ink jet frame F4, and fixing the one side ink jet frame F3 and the one side of the support frame 56 by the clamp 75. The 1 st side wall portion pin 73a and the 1 st support frame pin receiving hole 73b are provided at two locations, and the 2 nd side wall portion pin receiving hole 74b and the 2 nd support frame pin 74a are provided at one location (see fig. 3).

In the printing apparatus 100, when the printing head 51 is located at the working position P2, the printing head 51 can be subjected to cleaning and storage processing.

For example, when the ink ejecting section 5 further includes a detachable cleaning tray and a detachable storage tray, the cleaning tray or the storage tray can be easily attached to the printing head 51 located at the working position P2.

As shown in fig. 6 (a), the ink jet unit 5 is cleaned with a box-shaped cleaning tray 81 attached to the printing head 51. Therefore, the ink for ink jet discharged from the printing head 51 during purging is received by the purge tray 81 and accumulated in the bottom of the purge tray 81. A drain port, not shown, may be provided in the bottom of the cleaning tray 81. At this time, the accumulated ink for ink jet can be discharged through the discharge port.

In the printing apparatus 100, the cleaning tray 81 has cleaning tray side pins 81a at both ends thereof.

On the other hand, the print head unit 51 is provided with a cleaning-disc-side pin receiving hole 81b to which the cleaning-disc-side pin 81a can be attached, and a 1 st detection sensor 81c for detecting the cleaning-disc-side pin 81a attached to at least one side of the cleaning-disc-side pin receiving hole 81b facing the cleaning-disc-side pin receiving hole 81 b.

Therefore, the cleaning tray 81 is attached to the printing head unit 51 by fitting the cleaning-tray-side pins 81a into the cleaning-tray-side pin receiving holes 81 b. At this time, the presence or absence of the cleaning-tray-side pin 81a in the lower cleaning-tray-side pin receiving hole 81b is detected by the 1 st detection sensor 81c, whereby it can be recognized whether or not the cleaning tray 81 is attached to the printing head 51. In addition to attaching the cleaning tray 81 to the printing head 51, the cleaning tray 81 is fixed to the printing head 51 by screws 81d provided in the cleaning tray 81 at the time of cleaning.

As shown in fig. 6 (b), the print head section 51 has a rectangular shape in plan view, and the connection position between the cleaning-disk-side pin 81a and the cleaning-disk-side pin receiving hole 81b is located diagonally with respect to the print head section 51. At this time, since the two connection positions are separated as much as possible, the mounting accuracy of the cleaning tray 81 to the printing head 51 is also improved.

As shown in fig. 7 (a), in the ink jet unit 5, the printing head 51 is stored with a box-shaped storage tray 82 attached to the printing head 51. The storage tray 82 is shallower at the bottom than the cleaning tray 81, and is attached to the printing head 51 via a rubber pad 82e attached to the peripheral edge of the opening. Therefore, when the printing head 51 is stored, the storage tray 82 is attached, so that the humidity in the storage tray 82 can be maintained as much as possible. Further, dripping of ink jet ink from the nozzles of the printing head 51 can be suppressed. Although the storage tray 82 is attached to the working position P2, the printing head 51 (support frame 56) may be returned to the printing position P1 for storage after the storage tray 82 is attached.

In the printing apparatus 100, the storage tray side pins 82a are provided at both side end portions of the storage tray 82.

On the other hand, the printing head unit 51 is provided with a storage tray side pin receiving hole 82b to which the storage tray side pin receiving hole 82a can be attached, and a 2 nd detection sensor 82c for detecting at least one storage tray side pin 82a attached to face the storage tray side pin receiving hole 82 b.

Therefore, the storage tray 82 is attached to the printing head unit 51 by fitting the storage tray side pin 82a into the storage tray side pin receiving hole 82 b. At this time, whether or not the storage tray side pin 82a is stored in the storage tray side pin receiving hole 82b below is detected by the 2 nd detection sensor 82c, whereby it can be recognized whether or not the storage tray 82 is attached to the printing head unit 51. In storage, the storage tray 82 is attached to the printing head 51 by screws 82d provided in the storage tray 82 in addition to the storage tray 82 attached to the printing head 51.

As shown in fig. 7 (b), the print head unit 51 has a rectangular shape in plan view, and the connection position between the storage tray side pin 82a and the storage tray side pin receiving hole 82b is located at a position diagonal to the print head unit 51. At this time, since the two connection positions are separated as much as possible, the mounting accuracy of the tube retaining tray 82 to the printing head 51 is also improved.

Here, the connection position of the cleaning-disk-side pin 81a and the cleaning-disk-side pin receiving hole 81b is different from the connection position of the storage-disk-side pin 82a and the storage-disk-side pin receiving hole 82 b. That is, a diagonal line connecting the connection positions of the cleaning-tray-side pins 81a and the cleaning-tray-side pin receiving holes 81b and a diagonal line connecting the connection positions of the storage-tray-side pins 82a and the storage-tray-side pin receiving holes 82b intersect at substantially the center of the printing head 51.

In the ink ejecting section 5, the control device controls permission of the command for each operation of the printing head section 51 based on the detection results of the proximity sensor 76a, the 1 st detection sensor 81c, and the 2 nd detection sensor 82 c. That is, the control device controls the storage operation and the cleaning operation of the printing head 51 in addition to the printing operation related to the ejection of the ink jet ink by the printing head 51.

For example, when the proximity sensor 76a does not detect that the support frame portion 56 is located at the printing position P1 and the 1 st detection sensor 81c detects that the cleaning tray 81 is attached to the printing head portion 51, the control device permits the emission of the cleaning operation command and does not permit the emission of the storage operation command and the printing operation command.

Further, when the proximity sensor 76a does not detect that the support frame portion 56 is located at the printing position P1 and the 2 nd detection sensor 82c detects that the storage tray 82 is attached to the printing head 51, the control device does not allow any of the storage operation command, the cleaning operation command, and the printing operation command to be issued.

Further, when the proximity sensor 76a does not detect that the support frame portion 56 is located at the printing position P1, the 1 st detection sensor 81c does not detect that the cleaning tray is attached to the printing head portion 51, and the 2 nd detection sensor 82c does not detect that the storage tray 82 is attached to the printing head portion 51, the control device does not permit any of the storage operation command, the cleaning operation command, and the printing operation command to be issued.

When the proximity sensor 76a detects that the support frame portion 56 is located at the printing position P1 and the 2 nd detection sensor 82c detects that the storage tray 82 is attached to the printing head 51, the control device permits the storage operation command to be issued and does not permit the washing operation command and the printing operation command to be issued.

When the proximity sensor 76a detects that the support frame portion 56 is located at the printing position P1, the 1 st detection sensor 81c does not detect that the cleaning tray 81 is mounted on the printing head 51, and the 2 nd detection sensor 82c does not detect that the storage tray 82 is mounted on the printing head 51, the control device permits the printing operation command to be issued, and does not permit the cleaning operation command and the storage operation command to be issued.

When the proximity sensor 76a detects that the support frame portion 56 is located at the printing position P1 and the 1 st detection sensor 81c detects that the cleaning tray 81 is attached to the printing head portion 51, the control device does not allow any of the storage operation command, the cleaning operation command, and the printing operation command to be issued.

In the present specification, the "printing operation" refers to an operation of performing printing, specifically, an operation of ejecting ink for ink jet onto the printing target W. The "purge operation" refers to an action of forcibly ejecting ink for ink jet from the printing head 51. The "storage operation" refers to a behavior of keeping the printing head 51 in a state suitable for storage.

The control device is a computer including at least a Central Processing Unit (CPU), an arithmetic processing unit, a storage unit, an image processing unit, an input/output unit (keyboard, display), and the like.

Fig. 8 is a front view for explaining an example of a method of attaching and detaching the ink ejecting unit to and from the printing unit in the printing apparatus according to the present embodiment. In fig. 8, the right printing portion shows a state where the rotation portion or the ink ejection portion is not mounted.

As shown in fig. 8, the printing unit 3 is provided with attaching and detaching rails 36a (see fig. 2 and 3) extending in the width direction of the printing object W in the front and rear directions.

On the other hand, wheels T are provided at positions corresponding to the attaching and detaching rails 36a of the wheel rotating unit 4 and the ink ejecting unit 5.

In the printing apparatus 100, the connecting rail 36b is used when the rotation unit 4 or the ink ejection unit 5 is attached and detached. The coupling rail 36b can be coupled to the attaching/detaching rail 36a from the side of the printing unit 3.

For example, the ink ejection section 5 is placed on a connection rail 36b provided on the carriage.

Then, by connecting the connecting rail 36b to the attaching and detaching rail 36a, the wheel T of the ink ejecting section 5 is continuously rolled from the connecting rail 36b along the attaching and detaching rail 36a, and the ink ejecting section can be slid to the space portion of the printing section 3.

Then, as described above, the ink ejecting section 5 is attached to the printing section 3 by positioning the ink ejecting section 5 with respect to the housing section 35.

The method of detaching the ink ejecting section 5 may be performed by reversing these operations.

Since the turning unit 4 is attached and detached in the same manner as the ink ejecting unit 5, the description thereof is omitted.

Returning to fig. 1, the recovery unit 2 is a portion for recovering the printed material W1 that has been printed.

In the recovery unit 2, the print W1 printed by the printing unit 3 is connected to the winding shaft R2, and is sequentially wound by being rotated in a winding direction (for example, clockwise) by the winding shaft R2, thereby sequentially winding the print W1.

The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments.

In the printing apparatus 100 of the present embodiment, the rotary unit 4 is attached to the printing unit 3 on the upstream side, and the ink ejection unit 5 is attached to the printing unit 3 on the downstream side, but another printing unit 3 may be further provided between the two printing units 3 or on the downstream side of the printing unit 3 to which the ink ejection unit 5 is attached. The other printing section 3 may be provided with the rotation section 4 or the ink ejection section 5.

In the printing apparatus 100 of the present embodiment, the paper feed unit 1 adopts a method of pulling out the printing medium W from a state of being wound around the unwinding shaft R1, but is not limited to this method as long as the printing medium W can be supplied.

In the printing apparatus 100 of the present embodiment, the wheel rotating unit 4 includes: the printing apparatus includes a plate cylinder 41, a blanket cylinder 42 abutting the plate cylinder 41, and an impression cylinder 43 abutting the blanket cylinder 42 with a printing object W interposed therebetween, but is not limited to the above configuration as long as at least the plate cylinder 41 is provided.

For example, in addition to 3-cylinder type (offset printing), 2-cylinder type (relief printing) of a plate cylinder and an impression cylinder, 4-cylinder type (4-cylinder type) of a plate cylinder and a blanket cylinder, respectively, may be used.

The rotation ink supply unit 30 includes: the ink fountain 31, the inking roller group 32 that transfers the ink supplied from the ink fountain 31, and the ink form rollers 33 that supply the ink supplied from the inking roller group 32 to the plate cylinder 41 are not limited to the above-described configuration as long as at least the ink fountain and the ink form rollers that supply the ink supplied from the ink fountain to the plate cylinder are provided.

In the printing apparatus 100 of the present embodiment, the ink jet ink supply unit 52 is connected to the ink cartridge 70a provided outside through the pump 70b and the ink filter 70C by the pipe C, but the ink jet ink supply unit 52 may have these components. That is, the ink jet unit 5 may have an ink jet ink supply unit including a distribution tank and an ink cartridge 70 a.

In the printing apparatus 100 of the present embodiment, the wheel rotation unit 4 and the ink ejection unit 5 are positioned with respect to the printing unit 3 using the eccentric axis E1 and the wheel eccentric axis E2, but the positioning method is not limited thereto.

In the printing apparatus 100 of the present embodiment, the wheel rotation unit 4 and the ink ejection unit 5 are attached and detached by continuously rolling the wheel T from the connection rail 36b along the attachment and detachment rail 36a, but the method of attaching and detaching is not limited thereto.

In the printing apparatus 100 of the present embodiment, if the commercially available ink is UV ink, the known ultraviolet irradiator 38 is attached to the downstream side of the printing unit 3 to which the rotation unit 4 is attached, but if the commercially available ink is not UV ink, a dryer may be attached instead of the ultraviolet irradiator 38.

Similarly, if the commercially available ink is UV ink, a known ultraviolet irradiator 38 is attached to the downstream side of the printing unit 3 to which the ink ejection unit 5 is attached, but if the commercially available ink is not UV ink, a dryer may be attached instead of the ultraviolet irradiator 38.

In the printing apparatus 100 of the present embodiment, the recovery unit 2 collects and recovers the printed material W1 by connecting the printed material W1 to the take-up reel R2 and rotating the take-up reel R2.

For example, the printed material W1 may be recovered by a throwing method.

Industrial applicability

The printing apparatus of the present invention can be used as an apparatus for printing on a printing target W.

According to the printing apparatus of the present invention, printing by the rotation section and printing by the ink jet section can be selectively used without increasing the size of the apparatus itself.

Claims

1. A printing apparatus is characterized by comprising:

a paper feeding unit for supplying a printing medium;

a printing unit configured to print the object to be printed;

a rotation section and an ink ejection section, the rotation section and the ink ejection section being detachable from the printing section; and

a recovery unit configured to recover the print medium printed by the printing unit,

the rotary part or the ink-jet part is arranged on the printing part,

the rotary section has at least a plate cylinder,

the ink jet section has at least an ink supply section for jetting ink and a printing head section,

the printing part is provided with a shell part with a built-in ink supply part for rotation,

when the rotation unit is attached to the printing unit, rotation ink is supplied from the rotation ink supply unit to the plate cylinder, and the printing is performed on the object to be printed by the rotation unit,

when the ink ejection unit is attached to the printing unit, ink for ink jetting is supplied from the ink jet ink supply unit to the printing head unit, and the printing is performed on the object to be printed by the ink ejection unit.

2. Printing device according to claim 1,

the rotary ink supply section has at least an ink fountain and an ink form roller for supplying ink supplied from the ink fountain to the plate cylinder,

the ink form roller is movable in a direction away from the rotation portion or the ink ejection portion attached to the printing portion.

3. Printing device according to claim 1,

a plurality of the printing portions are provided,

the ink ejecting section is mounted on at least one of the plurality of printing sections,

the rotary unit is attached to the most upstream side of the plurality of printing units.

4. A printing device according to claim 3,

the ink ejecting section further includes a cooling roller on an upstream side of the printing head section,

the cooling roller is used for cooling the printed body.

5. Printing device according to claim 1,

the ink ejecting section further includes a mark sensor on an upstream side of the printing head section,

the mark sensor detects a mark printed by the rotation unit on the upstream side of the ink ejection unit.

6. Printing device according to claim 1,

the ink jet section further includes a support frame section that supports the ink jet ink supply section and the printing head section, and a rail section that can extend laterally,

the support frame portion is slidable along the extended rail portion from a printing position to a working position.

7. Printing device according to claim 1,

the ink jet part also comprises a cleaning tray provided with a cleaning tray side pin and a storage tray provided with a storage tray side pin,

the printing head is provided with: a cleaning disc side pin receiving hole to which the cleaning disc side pin can be attached, a storage disc side pin receiving hole to which the storage disc side pin can be attached, a 1 st detection sensor for detecting the cleaning disc side pin attached to the cleaning disc side pin receiving hole, and a 2 nd detection sensor for detecting the storage disc side pin attached to the storage disc side pin receiving hole,

the cleaning tray and the storage tray are detachably attachable to the printing head.

8. Printing device according to claim 7,

the printing apparatus further includes a control device for controlling storage, a printing operation, and a cleaning operation of the printing head based on detection results of the 1 st detection sensor and the 2 nd detection sensor.

9. Printing device according to claim 6,

the ink jet part also comprises a cleaning tray provided with a cleaning disc side pin, a storage tray provided with a storage disc side pin and a proximity sensor,

the cleaning tray and the storage tray are detachably attachable to the printing head,

the proximity sensor is configured to detect that the support frame portion is located at the printing position.

10. Printing device according to claim 9,

the printer further includes a control device for controlling storage, a printing operation, and a cleaning operation of the printing head based on detection results of the proximity sensor, the 1 st detection sensor, and the 2 nd detection sensor.