JPH0351154Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a printing device for label printing, etc. Although various printing apparatuses of this type have been provided in the past, a satisfactory drying mechanism has not yet been proposed.

For example, in the case of a type in which multiple plate rolls are arranged at intervals for printing paper that is continuously fed out, a dryer is installed individually between each plate roll.
It is known to dry the printed surface immediately after printing.
However, this method requires a large amount of space and increases the size of the entire device.

In addition, in the case of a type in which a plate roll is provided on a movable frame that moves back and forth, and the plate roll is transferred onto the printing paper as the movable frame moves back and forth, printing is performed, the printing surface of the printing paper that is sent out after printing is completed. A type of dryer equipped with a dryer for drying is known. However, in this case as well, there is a problem that not only does the tensioning device become larger, but also that a satisfactory print finish cannot be obtained during multi-color printing because the ink from the previous process has not dried during the printing process.

The object of the present invention is to provide a printing apparatus of the latter type described above, which can be made compact as a whole and is equipped with a dryer that can suitably dry the printed surface during the printing process. Therefore, the features of this invention in order to achieve this purpose are as follows:
a printing table 2 fixed to a fixed frame 1; an intermittent feeding means for feeding a continuous strip of printing paper 9 onto the printing table 2 intermittently in one direction in the strip length; It is equipped with a movable frame 3 that moves forward and backward in the horizontal direction orthogonal to the strip length direction above the upper printing paper 9, and when the movable frame 3 moves back and forth, the printing roll 10 that prints on the printing paper 9 is movable. In the printing device provided on the side of the frame 3, a dryer that dries the printed paper 9 by interviewing the printed surface of the printed paper 9 when the movable frame 3 passes above the printed paper 9 on the printing table 2. 33 and 34 are provided on the movable frame 3 side and before and after the printing roll 10 in the reciprocating direction.

One embodiment of the present invention will be described below in detail based on the drawings. In FIGS. 1 and 2, a fixed frame 1 of a printing device, a printing table 2 on the fixed frame side, and a horizontal direction with respect to the fixed frame are shown. A movable frame 3 that moves back and forth is shown.

The fixed frame 1 has an ink supply source 4 such as an ink fountain, and a supply roll 5 to which ink is supplied from the ink fountain. This supply roll 5 is independently driven and rotated as shown by the arrow in FIG. 1 by a drive source (not shown). Further, a swinging arm 6 is pivotally supported on the fixed frame 1, and the swinging of the arm causes a roll 7 at the tip of the arm.
can freely approach and separate from the supply roll 5. Note that the swing arm 6 has a guide roller 8 in the middle.

The printing table 2 includes the supply roll 5 and the swing arm 6.
It is located below and supports the printing paper 9. printing paper 9
As shown in the second figure, is a continuous strip of paper perpendicular to the reciprocating direction of the movable frame 3, and has a feed roll (not shown) and a take-up roll that winds up the printing paper 9 after passing through the printing table 2. The intermittent feeding means intermittently feeds the strip onto the printing table 2 in one direction in the strip length direction.

The movable frame 3 is reciprocated orthogonally to the printing paper 9 by a drive source (not shown). That is, this movable frame 3 is designed to move back and forth in conjunction with the intermittent feeding of the printing paper 9, and when the printing paper 9 is stopped intermittently, the movable frame 3 moves the printing paper 9 above the printing table 2 over its strip length. It is designed to move forward and backward in the lateral direction orthogonal to the direction. A printing roll 10 that rotates around an axis perpendicular to the reciprocating direction is provided at the lower part of the movable frame 3, and the printing roll is a first roll 1 in the illustrated embodiment.
1 and a second roll 12. Both rolls are arranged one above the other and interlocked with each other, and in the example shown, the second roll
Roll 12 is connected to rack 13 and pinion 14 (second
Although the printing roll 10 is rotated in synchronization with the movement of the movable frame 3 by means of the printing roll 10 shown in FIG. Further, the printing roll 10 has a plurality of plates P arranged in the axial direction as shown in the second figure, thereby enabling multicolor printing, etc. Therefore, the above-described intermittent feeding of the printing paper 9 is performed by a single plate P. When sending by an amount L corresponding to , or by skipping over any version, it is sent by an integral multiple of L. On the other hand, a kneading roll group A is provided on the upper part of the movable frame 3, and in the illustrated example, a roll train is formed from a contact roll 15 to rolls 16, 17, 18, and 19, and the roll 19 at one end is located at the tip of the swing arm. Contact roll 7. A drive roll group B is provided on the opposite side of the kneading roll group, and in the illustrated example, rolls 20 and 21 forming a roll train from the contact roll 15 are arranged, and the end roll 21 is connected to a bevel gear 22. mesh with. The bevel gear 22 is further connected to another bevel gear 23.
The bevel gear 23 is rotatably supported in the axial direction by a spline shaft 24 which is driven and rotated by a drive source (not shown). Therefore, due to the drive rotation of the spline shaft 24, the bevel gears 23, 22
The driving roll group B is rotated as shown by the arrow in FIG. Let it rotate like this. Further, a contact/separate arm 25 is rotatably supported at the upper and lower intermediate portions of the movable frame 3, and one end of the arm is provided with a contact/separate roll that selectively contacts the first roll 11 of the printing roll and the contact roll 15. 26 is pivotally supported. A roller 27 is pivotally supported at the other end of the contact/separation arm 25.
The arm 25 is urged by a spring 29 to cause the roller 27 to roll on the circumferential surface of the cam 28. The cam 28 is rotated at a predetermined speed in the direction of the arrow in FIG. 1 by a drive source (not shown).

Further, a guide plate 30 is fixed to the top of the movable frame 3, and the plate includes a guide surface 31 facing the guide roller 8 of the swing arm 6 and a push-up surface 32 continuing to the guide surface.
Equipped with.

Furthermore, as shown in FIG. 1, a pair of dryers 33 and 34 are provided on the movable frame 3 so as to sandwich the printing roll 10 from the front and rear in the reciprocating direction. That is,
The dryers 33, 34 are for drying the printing paper 9 when the movable frame 3 passes above the printing paper 9 on the printing table 2. As shown in FIG. 34 has a width larger than the width of the printing table 2 so that its lower surface is placed facing the printing paper 9 on the printing table 2 when the movable frame 3 moves. In addition, the dryers 33 and 34 are as follows:
Known methods such as infrared rays, ultraviolet rays, hot air, etc. can be used, but ultraviolet rays are preferred because they are quick-acting (the printed surface of the label can be dried in 0.1 to 0.2 seconds).

To explain the operation of the printing device, Fig. 1 shows the state when the movable frame 3 starts moving forward, Fig. 3 shows the state in the middle of the forward movement, and Fig. 4 shows the state when the forward movement ends and the backward movement starts. ing. First, in the state at the start of forward movement (FIG. 1), the roll 7 of the swing arm 6 provided on the fixed frame 1 is in contact with the roll 19 of the kneading roll group A and rotates in conjunction with it. The roller 27 of the contact/separation arm 25 is the cam 2
Therefore, the contact/separation roll 26 is in contact with the contact/separation roll 15 and rotates in conjunction with the contact/separation roll 15.

From this state, when the movable frame 3 is moved leftward in the drawing by the drive source and begins to move forward, the printing roll 10 is rotated via the rack 13 and pinion 14. The power of the spline shaft 24 is transmitted to a bevel gear 23 sliding on the same axis, and rotates the kneading roll group A and the drive roll group B regardless of whether the movable frame 3 is moving forward or backward. When the movable frame 3 moves forward, the guide surface 31 of the guide plate 30 guides the guide roller 8 of the swinging arm 6, causing the swinging arm 6 to rotate in the clockwise direction in the figure. Guide roller 8 pushes up surface 3
2, roll 7 at the tip of the arm
is in contact with the ink supply roll 5 and rotated in conjunction with the ink supply roll 5.
When the printing roll 10 arrives on the printing paper 9 (third
), the printing roll 10 (in the example shown, the second roll 1
2) is rolled onto the printing paper to print. At this time, the roller 27 of the contact/separation arm 25 is located at the peak of the cam 28, and therefore the contact/separation roll 26 is in contact with the printing roll 10 (first roll 11 in the illustrated example) and rotates in conjunction. Immediately after printing, as the movable frame 3 continues to move forward, the dryer 34 at the rear in the forward movement direction passes over the printed surface of the printing paper 9, and at this time dries the printed surface.

After the printing by the forward movement is completed and the movable frame 3 continues to move slightly, it reaches the forward movement end position (the fourth
figure). At this time, the guide roller 8 of the swinging arm 6 remains on the push-up surface 32 of the guide plate 30, but the roller 27 of the contact/separation arm 25 is located in the valley of the cam 28 and rotates the contact/separation roll 26 onto the contact roll 15. It touches and rotates in conjunction. Subsequently, the movable frame 3 starts to move back in the opposite direction, but during this time the printing paper 9
The above-mentioned intermittent feeding is performed. Note that the return movement of the movable frame 3 is performed in the completely reverse order of the above-mentioned forward movement, and during the return movement, the printing paper 9 is printed again, and the dryers 34 and 33 that pass over the printing paper 9 perform printing. The pre-drying and the post-printing drying are performed in series (therefore, the rotation direction of the printing roll 10 is reversed from the forward movement, but in the same manner as above in the order of Fig. 4 -> Fig. 3 -> Fig. 1) ).

According to the present invention described above, the dryer 3 is configured to interview the printing paper 9 on the printing table 2 when the movable frame 3 is moved.
3 and 34 are provided on the movable frame 3 side and before and after the reciprocating direction of the printing roll 10, the printing surface of the printing paper that is intermittently fed can be reliably dried immediately after printing each time, and the drying The provision of the printers 33 and 34 does not increase the size of the entire apparatus, and the entire printing apparatus can be made more compact.

[Brief explanation of the drawing]

FIG. 1 is a side view of a printing apparatus according to an embodiment of the present invention, showing the state immediately before the movable frame starts to move forward, FIG. 2 is a front view of the printing roll portion, and FIG. FIG. 4 is a side view of the printing apparatus shown in the figure, showing a state in which the movable frame is moving forward, and FIG. 1...Fixed frame, 2...Printing table, 3...Movable frame,
4... Ink supply source, 5... Supply roll, 6...
Swinging arm, 9...Printing paper, 10...Printing roll, 13...Rack, 14...Pinion, 15...
... contact roll, 25 ... contact and separation arm, 26 ... contact and separation roll, 28 ... cam, 30 ... guide plate, 3
3,34...Dryer, A...Kneading roll group, B...
Drive roll group.

Claims (1)

[Claims for Utility Model Registration] A printing table 2 fixed to a fixed frame 1, an intermittent feeding means for feeding a continuous strip of printing paper 9 onto the printing table 2 intermittently in one direction in the length of the strip, and the printing paper A movable frame 3 is provided that moves back and forth above the printing paper 9 on the printing table 2 in a lateral direction perpendicular to the strip length direction when the printing paper 9 is stopped, and when the movable frame 3 moves back and forth, printing is performed on the printing paper 9. In a printing device in which a printing roll 10 for performing printing is provided on the side of the movable frame 3, when the movable frame 3 passes above the printing paper 9 on the printing table 2, it interviews the printed surface of the printing paper 9 and prints it. A printing apparatus characterized in that dryers 33 and 34 for drying printing paper 9 are provided on the movable frame 3 side and before and after the printing roll 10 in the reciprocating direction.