JP2992433B2 - Gravure offset printing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gravure offset printing press, and more particularly to printing of continuous contents on a long object such as a hose.

[0002]

2. Description of the Related Art In general, when a display of a manufacturer or the like is printed on a long product such as a rubber hose, a dedicated gravure offset printing machine is used. Usually, this gravure offset printing press passes a rubber hose through the gravure offset printing press, and performs desired printing on the rubber hose by the gravure offset printing press.

FIG. 7 shows a configuration of a printing unit 100 of a gravure offset printing machine used for printing a rubber hose. The printing unit 100 mainly includes a drive motor 5, a belt 8, a gravure roll 10, a hose feed roll 15, an offset roll 20, and a clutch brake 25. Each roll and the like are connected by a belt 8.

Next, the operation of the printing unit 100 will be briefly described. The rotation of the drive motor 5 is disconnected by the clutch brake 25, and the gravure roll 10, the hose feed roll 1
5 and the offset roll 20. A desired printing plate (for example, a manufacturer name or a product number) is provided on the gravure roll 10.
Are provided on the circumferential portion, and temporarily transfer characters and the like of the printing plate to the offset roll 20 as ink.

[0005] The offset roll 20 prints the transferred ink on the rubber hose 40 guided to the printing unit 100 by the hose feed roll 15. That is, the gravure roll 10 and the offset roll 20 rotate while being in contact with each other, the printing plate of the gravure roll 10 is transferred to the offset roll 20 as ink, and is printed on the rubber hose 40 at predetermined intervals. The printed rubber hose 40 is sent out in the direction of arrow 110.

As described above, by using a gravure offset printing machine, desired printing can be reliably performed on a long product such as the rubber hose 40.

[0007]

However, the conventional gravure offset printing press has the following problems. The only contents that can be printed by the conventional gravure offset printing machine are those that do not change the manufacturer name, product number, and the like. That is, in the conventional gravure offset printing press,
Only a fixed printing plate previously set on the outer peripheral portion of the gravure roll 10 could be printed on a long product such as the rubber hose 40. Therefore, it is not possible to print the contents that change sequentially (for example, the production lot and length of the rubber hose 40). Therefore, when the rubber hose 40 is used, there is a disadvantage that the length must be measured each time.

Accordingly, an object of the present invention is to provide a gravure offset printing press capable of accurately and reliably performing printing on a long object with changing contents.

[0009]

According to a first aspect of the present invention, there is provided a gravure offset printing press having a first plate roll formed on an outer peripheral surface thereof so that a printing plate can be mounted thereon, and a first plate roll adjacent to the first plate roll. In a gravure offset printing press provided with a transfer roll provided so as to be in contact with the transfer plate, a projection plate is provided on a part of the outer peripheral surface of the transfer roll, and a printing plate on which a plurality of different characters are continuously provided has an outer peripheral surface. The second plate roll is provided so as to be attachable to the convex portion of the transfer roll and does not contact the outer peripheral surface other than the convex portion, and the first plate roll, the second plate roll, and the transfer roll have the same radius. , that the number of the rotating second edition roll is larger than the number of the rotating transfer roller is characterized.

[0010] The gravure offset printing machine of claim 2 is
The printing plate provided on the outer peripheral surface of the second plate roll in the gravure offset printing press according to claim 1, wherein a plurality of character strings are provided.
Is formed, and differs each time the second plate roll rotates a predetermined number of times.
Make sure that the characters in the string are transferred to the
It is characterized by that.

[0011]

[0012]

[0013]

The gravure offset printing press according to claim 1 is
A convex portion is provided on a part of the outer peripheral surface of the transfer roll, and the second plate roll is formed such that a printing plate on which a plurality of different characters are continuously provided is mountable on the outer peripheral surface, and the convex portion of the transfer roll is provided. Is provided so as not to contact the outer peripheral surface other than the convex portion.

[0014] First Edition roll, the radius of the second edition roll and transfer roll are equal, it is made larger than the number of the rotating second edition roll rotation number <br/> transfer roll. Therefore, the difference in rotational speed of the second edition roll and the transfer roll,
The position where the convex part of the transfer roll and the printing plate of the second plate roll are in contact
Is shifted every rotation, and a different character is transferred to the transfer roll every rotation.

A gravure offset printing press according to claim 2 is
In the gravure offset printing press according to claim 1, a plurality of character strings are formed on the printing plate provided on the outer peripheral surface of the second plate roll, and a character of a different character string is transferred every time the second plate roll rotates a predetermined number of times. It is transferred to the convex part of the roll. Therefore, a plurality of rows of characters can be printed continuously.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a gravure offset printing press for printing a long object such as a rubber hose according to the present invention will be described.

FIG. 1 shows the appearance of a gravure offset printing machine 200 according to the present embodiment. Gravure offset printing machine 20
Reference numeral 0 denotes an operation unit 50, a printing unit 100, a transport unit 80, and the like.

FIG. 2 shows a gravure offset printing machine 2.
A configuration of the printing unit 100 will be described with reference to a side view of the printing unit 100 according to the first embodiment. The printing unit 100 includes an A gravure roll 10 as a first plate roll and an offset roll 2 as a transfer roll.
0, a B gravure roll 30 as a second plate roll, a drive motor 4, a first clutch brake 5, a second clutch brake 6, and a gravure roll cylinder 7. Here, the radius of the A gravure roll 10, the offset roll 20, and the B gravure roll 30 (radius r
1, radius r2 and radius r3) are equal (see FIG. 2).

As shown in FIG. 2, A gravure roll 10
Is provided at a position where it comes into contact with the offset roll 20, and the B gravure roll 30 is brought into contact with the convex portion 22 provided on the offset roll 20 and at a position where it does not contact the outer peripheral surface of the offset roll 20 other than the convex portion 22. Is provided. Further, the offset roll 20 is provided at a position where the offset roll 20 comes into contact with the rubber hose 40.

Here, an ink nozzle 19 and a blade 18 are provided in the vicinity of the A gravure roll 10 and the B gravure roll 30, and an ink drain 25 is provided below both gravure rolls. (Not shown). Each gravure roll and each clutch brake are connected to the drive motor 4 via a belt or the like. A printing plate indicating a manufacturer name, a product number, and the like is formed on an outer peripheral surface of the A gravure roll 10,
A plurality of character strings indicating the length of the rubber hose are formed on the outer peripheral surface of the B gravure roll 30.

FIG. 3A shows a printing plate 10H formed on the outer peripheral surface of the gravure roll A, and FIG. 3B shows a printing plate 30H formed on the outer peripheral surface of the B gravure roll 30. The printing plate 10H indicates a manufacturer name and a product number, and the printing plate 30H is provided with four character strings (columns 30H1 to 30H4) for indicating the length of the rubber hose.

Next, FIG. 4 shows a view when the printing unit 100 is viewed from the bottom of the gravure offset printing machine 200.
The B gravure roll 30 is connected to a roll shaft 32. The roll shaft 32 has a first gear 33 and a fixed position sensor 3.
8 are provided. The first gear 33 is combined with the second gear 36.

In this embodiment, the roll shaft 32, the first gear 33 and the fixed position sensor 38 are arranged on a roll base 39, and the gravure roll cylinder 7 is mounted on the roll base 39 via a cylinder handle 9 and a cylinder rod 8. It is connected. The gravure roll cylinder 7 is connected to a cylinder control unit 51, and the cylinder control unit 5
1 is connected to a cylinder control circuit 53. The cylinder control circuit 53 is connected to the fixed position sensor 38.

Next, the operation of the gravure offset printing machine 200 of this embodiment will be described. FIG. 5 shows the printing unit 10.
0 is a perspective view. The transmission of the drive from the drive motor 4 to each unit will be described with reference to FIG.

The driving force of the driving motor 4 is transmitted to the first clutch brake 5 and the second clutch brake 6 via a belt. Here, the driving force transmitted to the first clutch brake 5 rotates the second gear 36 and the first gear 33 via the belt. The roll shaft 32 rotates with the rotation of the first gear 33, and the B gravure roll 30 rotates in the direction of arrow 140 (FIG. 2).

Here, the number of gears of the second gear 36 is formed to 25, and the number of gears of the first gear 33 is formed to 24. For this reason, the first gear 33 performs one or more rotations while the second gear 36 makes one rotation. That is,
The first gear 33 advances slightly (24/25) beyond the second gear 36 each time it rotates.

Since the radius of the B gravure roll 30 and the offset roll 20 are formed to be equal, usually,
The peripheral speed of the outer peripheral surface of the B gravure roll 30 is equal to the peripheral speed of the outer peripheral surface of the offset roll 20. However, the B gravure roll 30 rotates slightly faster than usual due to the difference in the number of gears of the two gears. Thereby, the convex portion 22 of the offset roll 20 and the printing plate 30H of the B gravure roll 30 are formed.
The contact position is shifted every rotation.

When the B gravure roll 30 rotates,
From the ink nozzle 19, a row (for example, the row 30) of the printing plate 30H that is in contact with the convex portion 22 of the offset roll 20 in the printing plate 30H.
In response to H1), ink is released (see FIGS. 2 and 3B). The ejected ink is applied to the row 30 by the blade 18.
H1 is spread over the entire surface and an appropriate amount of ink is applied to the printing plate row 30H.
1 remains.

In this way, the contact between the B gravure roll 30 having an appropriate amount of ink and the offset roll 20 causes the projections 22 of the offset roll 20 to contact the printing plate 30H.
Is transferred as ink. The blade 18
Unnecessary ink among the inks extended by the ink drops into the ink drain 25 and is collected. The ink collected in the ink drain 25 is sent to the ink circulation pump, and is discharged from the ink nozzle 19 again.

In this way, different characters on the printing plate 30H of the B gravure roll 30 are reliably transferred to the convex portions 22 of the offset roll 20 for each rotation (see FIG. 3B).

On the other hand, the driving force transmitted to the second clutch brake 6 rotates the A gravure roll 10 and the offset roll 20 via the belt. Here, the A gravure roll 10 rotates in the direction of arrow 120 (FIG. 2). Also during this rotation, ink is ejected from the ink nozzle 19 to the printing plate 10H of the A gravure roll 10, the ink is spread over the entire printing plate 10H by the blade 18, and an appropriate amount of ink is applied to the printing plate 10H. Remains.

In this case, the printing plate 10H of the A gravure roll 10 and the offset roll 20
Contact, the characters of the printing plate 10H are transferred as ink onto the offset roll 20 (FIG. 3).
A). Unnecessary ink drops into the ink drain 25 and is collected, circulated by the ink circulation pump, and discharged from the ink nozzle 19 again.

As described above, the characters of the printing plate 10H of the A gravure roll 10 and the characters of the printing plate 30H of the B gravure roll 30 are transferred to the circumferential portion and the convex portion 22 of the offset roll 20.

The offset roll 20 after the character transfer is rotated in the direction of arrow 130 by driving the second clutch brake 6 (see FIG. 2), and the content transferred onto the rubber hose 40 guided to the printing unit 100 (see FIG. 2). 3A and FIG. 3B) are sequentially printed. Here, the rubber hose 40 is moved by an arrow 1 by the transport unit 80 with printing by the offset roll 20.
It is transported in ten directions (see FIGS. 1 and 2).

FIG. 6 shows a printed rubber hose 40.
As described above, by using the gravure offset printing machine 200 according to the present embodiment, not only the manufacturer and the product number but also the length thereof can be accurately printed on the rubber hose 40.

Incidentally, the gravure offset printing machine 200 of this embodiment uses the B gravure roll 30 with a roll shaft 32.
Along the arrow 150 (FIG. 4). By this movement, the contents of a plurality of rows of the printing plate 30H formed on the outer peripheral surface of the B gravure roll 30 can be continuously printed on the rubber hose 40. Below is B gravure roll 3
The movement of 0 in the direction of arrow 150 will be described.

The fixed position sensor 3 provided on the roll shaft 32
8 detects one rotation of the roll shaft 32 and outputs one pulse for each rotation (see FIG. 4). The pulse from the fixed position sensor 38 is input to the cylinder control circuit 53 and added.
The cylinder control circuit 53 compares the set number of pulses previously input by the operation unit 50 with the number of pulses received from the fixed position sensor 38 .

As a result of this comparison, when the number of pulses received from the home position sensor 38 reaches the set number of pulses, a cylinder operation command is output to the cylinder controller 51 (see FIG. 4). Cylinder control unit 5 that has received a cylinder operation command
1 controls the cylinder 7 and controls the amount of movement of the cylinder rod 8.

Under this control, the cylinder 7 moves the cylinder rod 8 provided therein by one unit in the direction of arrow 150 (see FIG. 4). Here, one unit is a distance DS corresponding to one row of the printing plate 30H of the B gravure roll 30 (FIG. 3B). One unit movement of the cylinder rod 8 causes the cylinder handle 9 to move the roll base 3
9 is extruded in the direction of the arrow.

The B gravure roll 30 moves by one row (distance DS) of the printing plate 30H as the roll base 39 moves. That is, for example, if the row 30H1 of the printing plate 30H is in contact with the projection 22 of the offset roll 20, this movement causes the row 30H2 to come into contact with the projection 22 (see FIGS. 3B and 4).

From this, every time the B gravure roll 30 rotates a predetermined number of times (one cycle), different rows of characters are continuously transferred to the convex portions 22 of the offset roll 20 by pushing the cylinder rod 8. That is, four columns of character strings (column 30) of the printing plate 30H indicating the length of the rubber hose 40.
The characters from H1 to 30H4) are transferred to the offset roll 20
, And can be printed on the rubber hose 40.

In the above embodiment, the rotation of the B gravure roll 30 was rotated slightly earlier than that of the offset roll 20, and the contact position between the convex portion 22 and the printing plate 30H was shifted every rotation. Therefore, the number of gears of the second gear 36 is 2
5. The number of gears of the first gear 33 was set to 24, and the first gear 33 was rotated by one or more rotations while the second gear 36 made one rotation.

However, another method may be used as long as different characters are sequentially transferred to the convex portions 22 of the offset roll 20 for each rotation. For example, contrary to the above embodiment, the number of gears of the second gear 36 is set to 24, and the number of gears of the first gear 33 is set to 25, and the rotation of the B gravure roll 30 is rotated slightly slower than the offset roll 20. Let it. Thus, the position where the convex portion 22 contacts the printing plate 30H is shifted every time the B gravure roll 30 rotates.

However, in this case, the B gravure roll 30
Is slower than the rotation of the offset roll 20,
Position where the convex portion 22 in contact with the printing plate 30H is displaced contrary to the above, elevating the order of such numbers reversed and ing. Keep ascending order
In this case, the character arrangement of the printing plate 30H is not as shown in FIG. 3B, and it is necessary to make the character arrangement reverse.

In the above embodiment, the radius r2 and the radius r of the offset roll 20 and the B gravure roll 30 are set.
3 is the same, and the rotation speeds of both rolls are different. Thereby, the contact position between the convex portion 22 of the offset roll 20 and the B gravure roll 30 is shifted every rotation.

[0046]

Effects of the Invention Gravure offset printing machine according to claim 1, convex portion is provided on a part of the outer peripheral surface of the transfer roll, printing plate second edition roll in which a plurality of different characters provided continuously It is formed so as to be mountable on the outer peripheral surface, and is provided so as to be in contact with the convex portion of the transfer roll and not to contact the outer peripheral surface except the convex portion.

Further, first edition roll, the radius of the second edition roll and transfer roll are equal and have the number of the rotating second edition roll greater than the number of the rotating <br/> transfer roll. Therefore, due to the difference between the rotation speed of the second plate roll and the transfer roll,
The position where the convex part of the transfer roll and the printing plate of the second plate roll are in contact
Is shifted every rotation, and a different character is transferred to the transfer roll every rotation.

The gravure offset printing press according to claim 2 is
In the gravure offset printing press according to claim 1, a plurality of character strings are formed on a printing plate provided on an outer peripheral surface of the second plate roll, and a character of a different character string is transferred every time the second plate roll rotates a predetermined number. It is transferred to the convex part of the roll. That is, a plurality of rows of characters can be printed continuously. Therefore, it is possible to print more consecutive characters accurately.

The gravure offset printing press of claim 4 is
In the gravure offset printing press according to claim 1, a plurality of character strings are formed on a printing plate provided on an outer peripheral surface of the second plate roll, and a character of a different character string is transferred every time the second plate roll rotates a predetermined number. It is transferred to the convex part of the roll. That is, a plurality of rows of characters can be printed continuously. Therefore, it is possible to print more consecutive characters accurately.

[Brief description of the drawings]

FIG. 1 is an external view of a gravure offset printing press according to the present invention.

FIG. 2 is a side view of a printing unit of the gravure offset printing press shown in FIG.

FIG. 3 is a diagram showing printing plates of A gravure roll and B gravure roll.

FIG. 4 is a bottom view of the printing unit shown in FIG.

FIG. 5 is a perspective view of a printing unit of the gravure offset printing press shown in FIG.

FIG. 6 is a view showing a rubber hose on which a manufacturer, a product number, and a length are printed by the gravure offset printing machine shown in FIG. 1;

FIG. 7 is a diagram illustrating a configuration of a printing unit of a conventional gravure offset printing press.

[Explanation of symbols]

 4 ... Driving motor 5 ... First clutch brake 6 ... Second clutch brake 20 ... Offset roll 22 ... Protrusion 30 ... B gravure roll 32 ... Roll shaft 33 ... First gear 36 ... Second gear

Claims (2)

(57) [Claims] 1. A gravure comprising: a first plate roll formed so that a printing plate can be mounted on an outer peripheral surface thereof; and a transfer roll provided adjacent to the first plate roll so that the printing plate contacts the outer peripheral surface. In the offset printing machine, a projection is provided on a part of the outer peripheral surface of the transfer roll, and a printing plate provided with a plurality of different characters continuously is formed so as to be mountable on the outer peripheral surface, and is in contact with the convex portion of the transfer roll. so as not to contact the outer circumferential face other than the projecting portion is provided with a second edition roll, first edition roll, the radius of the second edition roll and the transfer roll was equal, second edition roll rotation number of the transfer roll times Greater than the number of turns
Ku was that, gravure offset printing machine according to claim. 2. The gravure offset printing press according to claim 1, wherein the printing plate provided on the outer peripheral surface of the second plate roll has a plurality of characters.
A character string is formed and changes each time the second plate roll rotates
Characters on the transfer roll are transferred to the protrusions of the transfer roll.
Gravure offset printing machine, wherein the fact, to the.