JPH06226952A - One drum flexsographic press - Google Patents

Abstract

PURPOSE:To enable a one-drum flexsographic press to carry out required print ing on a sheet like material to be printed and be attached to an apparatus having an intermittent feed mechanism of a bag-making machine or the like. CONSTITUTION:A first frame 20 and a second frame 21 are provided to a bag- making machine body. A feed roll 6 to which a notch part 7 is partly formed and a pressure roll 2 are rotatably in a line mounted on the first frame 20, and an output shaft gear 24 and an intermittent sprocket wheel 23 are rotatably mounted on a part below both rolls. Besides, a plate cylinder 3 to which a resin plate 5 is fitted is rotatably mounted on the second frame 21, and besides an ink vat 9 equipped with an anilox roller 4, a doctor edge tool 10, and a doctor regulation handle 17 is arranged below the plate cylinder 3. Fly wheels 8, 8' conducting a sheet like material to be printed are attached to the first frame 20, and a thermally sealing unit 34 for the bag making machine body is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-drum flexographic printing machine, and more particularly to a plate cylinder 1 in which a continuous sheet-like material to be printed is set on a mechanical device having an intermittent feeding structure such as a bag making machine.
The present invention relates to a printing machine capable of making bags while continuously printing with a book.

[0002]

2. Description of the Related Art Conventionally, in a flexographic printing machine for continuously printing on a continuous sheet-shaped printing material, the printing material is fed between a plate cylinder equipped with a printing plate and an impression cylinder. It is customary to print by clamping, the size of this printing being determined by the circumferential size of the plate cylinder. That is, printing cannot be performed when the printing size is larger or smaller than the entire circumferential size of the cylinder plate.

In response to the above, for example, Japanese Patent Application No. 57-12
In 8716, a sheet is continuously passed through a printing section where a plate cylinder and an impression cylinder face each other, and a continuous sheet is intermittently provided with a dimension length equal to or larger than an arc length dimension of a printing plate mounted on the plate cylinder. It is disclosed that the printing plate is supplied in a continuous manner and the printing plate is press-bonded to the sheet during the intermittent supply to perform printing.

[0004]

However, the conventional method for printing by using the pressure between both cylinders while supplying the material to be printed between the plate cylinder equipped with a printing plate and the impression cylinder depends on the printing length. Since the circumference of the plate cylinder is determined, a separate plate cylinder must be prepared each time the printing length of the printing material changes, resulting in higher costs and replacement of the plate cylinder. There was a problem that extra time and complicated operations were required.

Further, according to the printing apparatus described in Japanese Patent Application No. 57-128716, there is an advantage that printing can be carried out on the same sheet without causing a blank space at adjacent portions in the longitudinal direction. Since the sheet is intermittently fed from the printing unit, it is not possible to synchronize when performing heat sealing, which is a post process, and these processes must be performed as separate processes. there were.

Therefore, the present invention solves the problems of the conventional various printing apparatuses for performing continuous printing on such a continuous sheet-shaped material to be used for intermittent feeding of bag-making machines and the like. It can be attached to a device with a mechanism,
An object of the present invention is to provide a one-drum flexographic printing machine capable of bag making while printing with one plate cylinder.

[0007]

In order to achieve the above object, the present invention provides a bag making machine main body with a first frame and a second frame, and the first frame is partially provided with a notch. The feed roll and the pressure roll are arranged side by side, and the output shaft gear and the intermittent sprocket wheel are mounted on the lower parts of both rolls, while the plate cylinder on which the resin plate is attached is mounted on the second frame. An ink vat equipped with an anilox roll, a doctor blade and a doctor adjusting handle is provided at the lower part of the cylinder, and a fly roll for guiding a continuous sheet-shaped material is attached to the first frame. After guiding the sheet-shaped printing material derived from the original fabric from the fly roll between the plate cylinder and the pressure roll to perform predetermined printing, the output shaft gear and the intermittent spout from between the pressure roll and the feed roll. Led to the heat sealing unit of the bag-making machine main body through the socket wheel it is the construction of the one-drum flexographic machine so as to seal.

The output shaft gear and the intermittent sprocket wheel are attached to the output shaft of the index drive mechanism for driving the pressure roll, the plate cylinder and the feed roll, and the bag making machine driving sprocket is driven through the belt from the intermittent sprocket wheel. A rotational force is transmitted to the wheel, and a seal position adjusting roll, a seal position adjusting handle, and a drying unit are arranged above the pressure roll.

Further, the rotation of the input shaft of the index drive mechanism is transmitted to the sprocket wheel for driving the bag-making machine via the belt to adjust the start timing, so that the drive start timing of the flexographic printing machine can be changed to the drive timing of the bag-making machine side. Earlier than.

[0010]

According to the one-drum flexographic printing machine having the above construction, the resin plate is attached to the plate cylinder in a stopped state, and the ink in the ink vat is aniloxed by the doctor blade provided on the ink bud while rotating and adjusting the doctor adjusting handle. The output that is transferred to the resin plate through the roll and fed out from the original sheet between the plate cylinder and the pressure roll through the fly roll, and at the same time meshed with the output shaft of the index drive mechanism. After the rotational force is transmitted from the shaft gear to the pressure roll, the pressure roll, the plate cylinder, and the feed roll rotate to perform predetermined printing, and then the output shaft gear and the intermittent sprocket wheel are inserted between the pressure roll and the feed roll. After that, it is guided to and sealed by the heat sealing unit of the bag making machine body.

Further, the position of the seal position adjusting roll is adjusted by the seal position adjusting handle, and after passing through the drying section, it passes between the notches of the pressure roll and the feed roll, and passes through the output shaft gear and the intermittent sprocket wheel. The printed material that is guided to the heat sealing unit and heat sealed is cut into an appropriate size by the bag making machine body. At this time, the gap between the pressure roll and the feed roll is adjusted by the seal position adjusting handle.

During the above operation, the rotation of the input shaft of the index drive mechanism is transmitted to the sprocket wheel for driving the bag making machine via the belt, so that the driving start time of the flexographic printing machine is more than the driving time of the bag making machine side. Since the sheet-shaped material to be dripped is accelerated, the presence or absence of this sagging is detected, and each feed roller is made to rotate once before the sagging disappears. Stop. Then, the roll on the bag-making machine side is rotated by the difference between the length of the bag and the circumferential length of the feed roll to pull the object to be pulled, and the action on the bag-making machine side is continued.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a one-drum flexographic printing machine according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a main part of the present embodiment, in which 1 is a tube sheet which is a continuous sheet-shaped material to be printed, 30 is a bag-making machine main body, 2
Reference numeral 0 is a first frame, 21 is a second frame, and in the first frame 20, a feed roll 6 and a pressure roll 2 in which a notch portion 7 is partially formed are lined up and lined up. Reference numeral 15 is an adjusting handle for the pressure roll and the feed roll.

A plate cylinder 3 to which a resin plate 5 is attached is mounted on the second frame 21, and an ink vat 9 is provided below the plate cylinder 3. The ink pad 9 is equipped with an anilox roll 4, a doctor blade 10 and a doctor adjusting handle 17. Also, the second
The frame is equipped with a plate cylinder and pressure roll adjusting handle 18, and the anilox roll and plate cylinder adjusting handle 16. Further, the first frame 20 has a fly roll 8,
8'is attached.

Above the pressure roll 2, a seal position adjusting roll 11, a seal position adjusting handle 14, and a drying section 12 are provided.
And have been deployed. Reference numeral 24 is an output shaft gear, 23 is an intermittent sprocket wheel, and 34 is a heat sealing unit for sealing the tube sheet 1 at the sealing position 13. The intermittent sprocket wheel 23 is connected to the bag making machine driving sprocket wheel 19 by using a belt 19a.

Then, the tube sheet 1 derived from the original fabric is guided from the fly rolls 8 and 8'between the plate cylinder 3 and the pressure roll 2, and the seal position adjusting roll 1 located further above the roll.
1 through the drying unit 12, the pressure roll 2 and the feed roll 6 and then to the heat seal unit 34 through the output shaft gear 24 and the sprocket wheel 23. Reference characters a, b and c indicate the rotation directions of the pressure rolls 2, the plate cylinder 3 and the feed rolls 6.

FIG. 2 is a plan view showing a drive system for the pressure roll 2, the plate cylinder 3 and the feed roll 6, and 29 is an index drive mechanism, and the output shaft gear 24 is provided on the output shaft of the index drive mechanism. An intermittent sprocket wheel 23 is attached to the sprocket wheel 19 for driving the bag making machine via the belt 19a.

The output shaft gear 24 is meshed with the pressure roll drive gear 25, and the plate cylinder actuation gear 27 and the feed roll actuation gear 28 are provided on a large diameter actuation gear 26 that rotates integrally with the pressure roll drive gear 25. And are in mesh. The plate cylinder 3 and the feed roll 6 are rotated by the plate cylinder operation gear 27 and the feed roll operation gear 28.

FIG. 3 is a side view showing the operating state of the flexographic printing machine according to this embodiment, and A in the figure shows the main components of the one-drum flexographic printing machine disclosed in FIG. . In the figure, reference numeral 38 is an original fabric, 37 is a delivery roll of the tube sheet 1, 36 is a delivery motor, and 35 is a photoelectric tube. Further, 31 is a cutting edge of the tube sheet 1, 3
Reference numeral 2 is a pulling roll, and 33 is a cut position adjusting handle of the tube sheet 1.

The operation of this embodiment having such a configuration will be described below. First, in the stopped state, the resin plate 5 is attached to the plate cylinder 3. At this time, be careful so that the resin plate 5 does not contact the anilox roll 4 and the pressure roll 2.

Next, while adjusting the rotation of the doctor adjusting handle 17, the doctor blade 1 mounted on the ink pad 9 is rotated.
The ink in the ink vat 9 scraped off with 0 is transferred to the resin plate 5 via the anilox roll 4. At this time, the adjustment handle 16 is rotated to finely adjust the gap between the anilox roll 4 and the plate cylinder 3.

Next, by driving the feeding motor 36 shown in FIG. 3, the tube sheet 1 fed from the material 38 passes from the feeding roll 37 through the fly rolls 8 and 8'and the plate cylinder 3 and the pressure roll 2 are fed. Be guided between. At this time, the adjustment handle 18 is rotated to adjust the gap between the plate cylinder 3 and the pressure roll 2.

By operating the index drive mechanism 29 shown in FIG. 2, the rotational force is transmitted from the output shaft gear 24 meshed with the output shaft of the index drive mechanism 29 to the pressure roll drive gear 25 at the same time. ,
From the large-diameter operating gear 26 that rotates integrally with the pressure roll drive gear 25 to the plate cylinder operating gear 27 and the feed roll operating gear 28.
The rotational force is transmitted to and the pressure roll 2, the plate cylinder 3, and the feed roll 6 rotate in the a, b, and c directions shown in FIG.

By the action of the drive system, the tube sheet 1 guided to the fly rolls 8 and 8'is subjected to predetermined printing between the plate cylinder 3 and the pressure roll 2, and the position is adjusted by the seal position adjusting handle 14. Seal position adjustment roll 1
1 and the drying unit 12, the tube sheet 1 after printing passes between the pressure roll 2 and the notch of the feed roll 6, and is further guided to the heat seal unit 34 via the output shaft gear 24 and the sprocket wheel 23. Then, it is heat-sealed at the sealing position 13. At this time, the adjustment handle 15 is rotated to adjust the gap between the pressure roll 2 and the feed roll 6.

After printing, the tube sheet 1 stands still in the notches 7 of the pressure roll 2 and the feed roll 6, so that the tube sheet 1 is in a free state and it is possible to perform multi-row printing of 2 to 3 rows. Is. Incidentally, reference numeral 45 in FIG. 1 denotes a portion where the tube sheet 1 has dropped.

The heat-sealed tube sheet 1 passes through the pulling roll 32 and is cut to an appropriate size by the cutting blade 31 while the cutting position is adjusted by the cutting position adjusting handle. FIG. 4 is a plan view partially showing the heat-sealed tube sheet 1, 39 is a sealing line, 40 is a cutting position, and 42 is a printed portion. Also, 43 represents the print length,
44 represents the length of the obtained bag.

In the above description of the operation, the flexographic printing machine is required to start rotating earlier than the pulling roll 32 on the bag making machine body 30 side at the time of starting. Therefore, the rotation of the input shaft of the index drive mechanism 29 is transmitted from the sprocket wheel 23 to the bag making machine driving sprocket wheel 19 via the belt 19a to adjust the start timing.
Then, the flexographic printing machine starts to rotate faster than the pulling roll 32, so that the tube sheet 1 sags at the portion 35 'in FIG. 3. Therefore, the presence or absence of this sag is detected by the photoelectric tube 35, and the sag disappears. Each of the rolls constituting the drive system is rotated once before the feed roll 6 stops at the position of the notch 7.

Then, the pulling roll 32 on the bag making machine side is rotated by the difference between the length of the bag and the length of the circumference of the feed roll 6 to pull the tube sheet 1. At this time, regarding the relationship among the feed amount, the print length, and the bag length, it is necessary that the length 44 of the bag delivered by the feed roll 6 is longer than the print length 43 shown in FIG. .

[0029]

As described in detail above, according to the one-drum flexographic printing machine of the present invention, after the resin plate is attached to the plate cylinder, the ink in the ink vat is transferred to the resin plate through the anilox roll. Then, the pressure roll, the plate cylinder, and the feed roll are rotated by the rotational force transmitted from the output shaft gear meshed with the output shaft of the drive system, and the predetermined printing is performed on the sheet-shaped substrate fed from the original fabric. After being applied, it can be heat-sealed in the body of the bag making machine.

Therefore, it is possible to carry out bag making while printing with one plate cylinder without producing a useless blank space in a region adjacent to each other in the longitudinal direction on the same sheet. Further, depending on the printing length, the circumferential length of the plate cylinder is increased. Therefore, it is not necessary to separately prepare a plate cylinder depending on the printing length of the printing material, and the cost can be reduced and the operability can be improved.

Particularly, since the rotation of the input shaft of the index drive mechanism is transmitted to the sprocket wheel for driving the bag making machine via the belt, the driving start time of the flexographic printing machine is made earlier than the driving time of the bag making machine side. Since the sheet-shaped printing material sags, the presence of this sagging is detected, and before the sagging disappears, the feed rolls stop at the position of the notch by rotating the rolls that make up the drive system one revolution. The roll can rotate by the difference between the length of the bag and the circumference of the feed roll to pull the object to be pulled, and the operation on the bag-making machine side can be continued. A one-drum flexographic printing machine capable of performing continuous printing on a sheet-shaped material to be printed is provided.

[Brief description of drawings]

FIG. 1 is a side view showing a main part of the present invention.

FIG. 2 is a plan view showing a drive system of the present invention.

FIG. 3 is a side view showing a state during operation of the flexographic printing machine according to the present invention.

FIG. 4 is a plan view partially showing a heat-sealed sheet-shaped printing material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tube sheet (sheet-like material to be printed) 2 ... Pressure roll 3 ... Plate cylinder 4 ... Anilox roll 5 ... Resin plate 6 ... Feed roll 7 ... Notch 8,8 '... Fly roll 9 ... Ink vat 10 ... Doctor blade 11 … Adjusting roll 12… Drying part 13… Seal position 14… Seal position adjusting handle 15… Adjusting handle between pressure roll and feed roll 16… Anilox roll and plate cylinder adjusting handle 17… Doctor adjusting handle 18… Plate cylinder and pressing roll Adjusting handle 19 ... Sprocket wheel 19a for driving bag making machine 19a ... Belt 20 ... First frame 21 ... Second frame 23 ... Sprocket wheel 24 ... Output shaft gear 25 ... Pressure roll drive gear 26 ... Operating gear 27 ... Plate cylinder operating gear 28 ... Feed roll operating gear 29 ... Index drive mechanism 30 ... Bag-making machine body 31 ... Cutting blade 32 ... Pulling roll 33 ... Cut position adjusting handle 34 ... Heat sealing unit 35 ... Phototube 35 ... Rolled original 36 ... Feeding motor 37 ... Feeding roll 38 ... Raw 39 ... Seal line 40 ... Cutting position 41 ... Sealed sheet 42 ... Printed portion 43 ... Printing length 44 ... Bag length 45 ... Sheet hung from seal between feed roll and seal

Claims (4)

[Claims] 1. A bag-making machine main body is provided with a first frame and a second frame, and a feed roll and a pressure roll, each of which has a notch in a part thereof, are lined up and mounted on the first frame, and below the both rolls. The output shaft gear and the intermittent sprocket wheel are mounted on the part, while the plate cylinder on which the resin plate is attached is mounted on the second frame, and the anilox roll, the doctor blade and the doctor adjusting handle are provided on the lower part of the plate cylinder. And a fly roll for guiding a continuous sheet-shaped material to the first frame. The sheet-shaped material derived from the original fabric is fly-rolled. From the plate cylinder to the pressure roll to perform the specified printing, then from the pressure roll to the feed roll through the output shaft gear and the intermittent sprocket wheel to the heat seal unit of the bag making machine body. A one-drum flexo printing machine characterized by being guided and sealed. 2. The output shaft gear and the intermittent sprocket wheel are attached to the output shaft of an index drive mechanism for driving the pressure roll, the plate cylinder and the feed roll,
The one-drum flexographic printing machine according to claim 1, wherein the intermittent sprocket wheel transmits a rotational force to a bag making machine driving sprocket wheel via a belt. 3. The one-drum flexographic printing machine according to claim 1, wherein a seal position adjusting roll, a seal position adjusting handle, and a drying section are provided above the pressure roll. 4. The drive start timing of the flexographic printing machine is controlled by transmitting the rotation of the input shaft of the index drive mechanism to the sprocket wheel for driving the bag maker via a belt to adjust the start timing. The one-drum flexographic printing machine according to claim 1, wherein the driving time is earlier than the driving time.