JP2004209795A - Printer for outer peripheral surface of fluorescent tube formed in rod shape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a printer for an outer peripheral surface of a fluorescent tube formed in a rod shape to deal with many kinds of printing by simplifying a structure. <P>SOLUTION: A fluorescent tube 3 formed in a rod shape is supplied to the printer 5 along a longitudinal direction with a fluorescent tube feeder 7. The fluorescent tube 3 supplied to the printer 5 is freely rotatively and freely movably along a longitudinal direction supported by making a central axis X of a fluorescent tube a fulcrum by a rotary support body 27 and freely movably along a longitudinal direction. Besides, a transfer barrel 23 wherein rotary motive power is given to the fluorescent tube 3 by a driving means 33, is arranged so that its rotary axis Y crosses, and a plate cylinder 39 is freely movably arranged on an outer peripheral surface of the transfer cylinder 23. An original plate 55 to which a character, a signal, a pattern and the like are provided, is fitted to the plate cylinder 39, and the original plate 55 is exchanged as occasion demands. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for printing the outer peripheral surface of a fluorescent tube formed in a rod shape called a straight tube.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, many means for engraving or printing on the surface of a long material having a circular cross section (for example, including a rod-shaped fluorescent tube) are already known.
[0003]
As one of the specific examples, a circular plate provided with a stamp or a plate surface on an outer peripheral surface is supported so as to be freely rotatable, and a long object having a circular cross section can be moved and rotated in its length direction, While supporting not to be able to move in the radial direction, the outer peripheral surface of the disc is pressed against the surface of the long material so that its movement direction is inclined at a predetermined angle with respect to the longitudinal direction of the long material. There is a structure in which a disk and a long material are rotated while being pressed against each other by pulling and moving the material in the length direction (see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-57-167268 [0005]
[Problems to be solved by the invention]
Patent Document 1 discloses an invention in which the surface of a long material can be stamped or printed by a simple operation of simply pulling and moving a long material in the longitudinal direction. Is a type in which one type of engraving or printing is continuously performed by a disk provided with an engraving or plate surface.
[0006]
For this reason, it is not possible to cope with multicolor printing or various types of engraving or printing. In this case, it is possible to cope with this by replacing the disk provided with the engraving or the printing plate with new ones, but this is not desirable in terms of cost and equipment.
[0007]
Therefore, according to the present invention, the outer periphery of a fluorescent tube formed in a rod shape designed to be able to continuously perform multicolor printing or a variety of types of printing on the rod-shaped fluorescent tube while simplifying the structure. It is intended to provide a surface printing device.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, there is provided a fluorescent tube supply device for supplying a fluorescent tube formed in a rod shape to a printing position along a longitudinal direction, and a fluorescent lamp provided at the printing position. A rotating support that rotatably supports the tube with the fluorescent tube center axis as a fulcrum and that is movable along the longitudinal direction, and a rotating shaft with respect to the outer peripheral surface of the rod-shaped fluorescent tube supported by the rotating support A transfer cylinder in which the hearts intersect and come into contact with each other and to which rotational power is given by the driving means, and a plate cylinder for mounting an original plate provided with characters, symbols, patterns, etc. to be transferred to the outer peripheral surface of the transfer cylinder, The plate cylinder is characterized in that it can move forward and backward with respect to the outer peripheral surface of the transfer cylinder.
[0009]
Thus, the rod-shaped fluorescent tubes are sequentially sent to the printing position by the fluorescent tube supply device. The rod-shaped fluorescent tube sent to the printing position crosses and contacts the transfer cylinder. At this time, since the fluorescent tube and the transfer cylinder have a contact pressure crossing each other, the rotational torque of the rotating transfer cylinder causes the fluorescent tube to move along the longitudinal direction in addition to the rotational torque applied to the fluorescent tube. As a result, the characters, symbols, patterns, and the like transferred to the transfer cylinder are printed spirally without causing a printing shift on the outer peripheral surface of the fluorescent tube.
[0010]
On the other hand, in order to separately print different characters, symbols, patterns, and the like, it is possible to cope with various types of printing by newly exchanging an original plate provided with the characters, symbols, patterns, and the like.
[0011]
According to a second aspect of the present invention, an ink supply device is provided on the plate cylinder, and a plurality of the plate cylinder and the ink supply device are arranged along the outer peripheral surface of the transfer cylinder as a set. .
[0012]
Thereby, the plate cylinder and the ink supply device can be efficiently arranged along the outer peripheral surface of the transfer cylinder, and the entire structure can be simplified.
[0013]
In addition, by selecting and using the color of the ink of each ink supply device, multicolor printing can be performed.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be specifically described below with reference to FIGS.
[0015]
FIG. 1 is a schematic perspective view of a stick-shaped fluorescent tube outer peripheral surface printing apparatus 1 according to the present invention.
[0016]
The printing apparatus 1 has a fluorescent tube supply device 7 that supplies a rod-shaped fluorescent tube 3 called a straight tube toward a printing position 5 along the longitudinal direction.
[0017]
The fluorescent tube supply device 7 forcibly supplies the rod-shaped fluorescent tube 3 sent by the transport line 11 constituted by the rolling rollers 9 to the printing position 5 along the longitudinal direction thereof. It has two supply rollers 13 and 15. The first and second supply rollers 13 and 15 are formed in a drum shape with a constricted central portion so that the rod-shaped fluorescent tube 3 can be sent out in the longitudinal direction without moving left and right.
[0018]
The first and second supply rollers 13 and 15 are conductively connected by a conduction belt 17, and are supplied with rotational power by a drive motor 21 provided on a roller shaft 19 of the first supply roller 13.
[0019]
In the printing position 5, as shown in FIG. 3, a transfer cylinder 23 for printing having a large diameter is arranged upward, while the fluorescent tube 3 is rotatable with respect to the center axis X at the printing position 5, and , So as to be movable along the longitudinal direction.
[0020]
More specifically, as shown in the figure, the structure is such that a plurality of rotating supports 27 are arranged so as to face the groove walls 25a of the support member 25 formed in a V-shape. The rotation support 27 has a shape in which a spherical body 27b is rotatably mounted on a spherical receiving seat 27a fixed to a V-shaped groove wall 25a by 360 degrees.
[0021]
Thus, the sphere 27b supports the fluorescent tube 3 so as to be rotatable from the left and right by point contact that does not cause large sliding resistance, and also supports the fluorescent tube 3 movably in the longitudinal direction. It is possible.
[0022]
The support member 25 can be adjusted in the direction of arrow A by rotating the handle 28 so that the position of the printing position 5 can be adjusted.
[0023]
As shown in FIG. 6, the transfer cylinder 23 has a transfer cylinder shaft 29 supported by a main gear 31 having a large diameter. The main gear 31 is supplied with rotational power from a drive motor 33 serving as a driving unit via a conduction belt 35 and a drive gear 37. It is supposed to be.
[0024]
The outer peripheral surface of the transfer cylinder 23 is a rubber roller 23a formed to have a predetermined width, and the rotation axis Y of the transfer cylinder shaft 29 is set to a predetermined value with respect to the fluorescent tube 3 at the printing position 5 as shown in FIG. The arrangement structure intersects at an angle θ.
[0025]
The crossing angle θ of the transfer cylinder 23 is different from the rotation torque T1 that gives the rotary motion to the rod-shaped fluorescent tube 3 that comes into contact with the transfer cylinder 23 by the rotation torque T when the transfer cylinder 23 rotates Z. Is set at an angle at which a movement torque T2 for moving the object along its longitudinal direction is obtained.
[0026]
The outer diameter of the transfer cylinder 23 ranges from right above to the left side of FIG. 1 over a predetermined region, and includes first, second, third, and fourth plate cylinders 39, 41, 43, and 45 (the fifth plate cylinder is Removed) are set to a size that is arranged at a predetermined interval.
[0027]
The first, second, third, and fourth plate cylinders 39, 41, 43, and 45 include ink supply devices 47, 49, 51, and 53, respectively (note that the fifth ink supply device is removed). The plate cylinders 39, 41, 43, 45 and the ink supply devices 47, 49, 51, 53 have the same structure. Here, the first plate cylinder 39 and the ink supply device 47 will be described.
[0028]
As shown in FIG. 2, the first plate cylinder 39 has a mounting portion 39a for mounting a strip-shaped original plate 55, and the strip-shaped original plate 55 is attached to the mounting portion 39a by, for example, a double-sided tape. It can be attached by winding using an adhesive means. In this case, by operating the foot-operated handle 56, the transfer cylinder 23 can be rotated, and the alignment between the original 55 and the transfer cylinder 23 can be adjusted.
[0029]
The strip-shaped original plate 55 has a shape in which characters, symbols, patterns, and the like are provided on a thin iron plate or a zinc plate.
[0030]
The first plate cylinder 39 can be moved forward and backward with respect to the outer peripheral surface of the transfer cylinder 23 by rotating the adjusting operation section 57, and the first plate cylinder 39 is separated from the outer peripheral surface of the transfer cylinder 23. Thus, the original 55 can be easily attached. A letterpress type offset printing type in which the first plate cylinder 39 is brought into strong contact with the outer peripheral surface of the transfer cylinder 23 so that characters, symbols, patterns, and the like of the original 55 are transferred to the rubber roller 23a serving as the outer peripheral surface of the transfer cylinder 23. It has become. In this case, it is not limited to the letterpress type offset printing type, but may be a letterpress type offset printing type.
[0031]
Further, the first plate cylinder 39 is provided with a rotation synchronized with the rotation of the transfer cylinder 23.
[0032]
Specifically, as shown in FIG. 6, the plate cylinder 39 was integrally fixedly supported by a gear shaft 61 of a small gear 59 meshing with a large-diameter main gear 31 on which a transfer cylinder shaft 29 of the transfer cylinder 23 was mounted. When the main gear 31 is rotated by the gear ratio between the main gear 31 and the small gear 59, the small gear 59 is also rotated, and the plate cylinder 39 is given a rotational power synchronized with the transfer cylinder 23. Accordingly, the relationship between the transfer cylinder 23 and the plate cylinder 39 has a simple and unified structure that is efficiently transmitted from the viewpoint of the conduction system.
[0033]
As shown in FIG. 5, the ink supply device 47 includes an ink supply unit 65 and a plurality of supply rollers that supply the ink from the ink supply unit 65 to the original plate 55 of the plate cylinder 39 as a uniform mixture. 67. The ink case 63 is rotatably supported at an ink supply position and a standby position with a hinge 69 as a fulcrum. By operating the operation unit 71, the ink case 63 is locked in a state where the supply roller 67 and the original plate 55 are in contact with each other. And the lock can be released. The supply roller 67 is supplied with rotational power by a drive motor 68. However, the supply roller 67 can be rotated by a manual handle 70 in order to check the state during ink supply.
[0034]
On the other hand, as shown in FIG. 7, the advance / retreat of the plate cylinder 39 with respect to the transfer cylinder 23 is performed by mounting a gear shaft 61 of a small goat 59 on which the plate cylinder 39 is integrally supported by a worm wheel 73 with a bearing (not shown). And is rotatably supported with eccentricity α.
[0035]
The worm wheel 73 meshes with the worm 75, and the bevel gear 77 of the worm 75 meshes with the bevel gear 79 of the adjusting operation section 57 provided on the front side.
[0036]
Therefore, by rotating the adjusting operation section 57, the bevel gears 77 and 79 rotate, and further, the worm wheel 73 rotates via the worm 75. At this time, the plate cylinder 39 mounted on the worm wheel 73 is separated from the transfer cylinder 23 by, for example, the amount of deviation of the worm wheel 73. After the mounting of the original plate 55 is completed, the adjusting operation unit 57 is moved in the opposite direction. , The meshing state between the main gear 31 and the small gear 59 is ensured.
[0037]
According to the fluorescent tube outer peripheral surface printing device 1 configured as described above, the rod-shaped fluorescent tube 3 is sequentially sent to the printing position 5 by the fluorescent tube supply device 7. The rod-shaped fluorescent tube 3 sent to the printing position 5 crosses and contacts the transfer cylinder 23. The fluorescent tubes 3 contacting each other cross the fluorescent tube 3 along the longitudinal direction thereof in addition to the rotational torque T1 in which the rotational movement of the rotating transfer cylinder 23 imparts a rotational movement about the fluorescent tube center axis X. And a moving torque T2 for moving. At this time, since the fluorescent tube 3 is supported by the rotary support 27, the rotational movement and the movement in the longitudinal direction are performed lightly, and the characters, symbols, patterns, etc. transferred to the transfer cylinder 23 are transferred to the fluorescent tube 3. As shown in FIG. 8, the printing is performed spirally without causing a printing shift on the outer peripheral surface.
[0038]
In this case, in the case of one-color printing, printing can be performed by selecting and using any one of the first to fourth plate cylinders 39, 41, 43, and 45.
[0039]
When it is desired to change characters, symbols, patterns, etc., the outer peripheral surface of the transfer cylinder 23 can be wiped clean with a solvent, and then a new master 55 can be attached to the plate cylinder 39.
[0040]
On the other hand, in the case of multi-color printing, for example, the ink color of the ink supply device 47 of the first plate cylinder 39 is black, the ink color of the ink supply device 49 of the second plate cylinder 41 is blue, and the third color is By selecting and using the color of the ink in the ink supply device 51 of the plate cylinder 43 as red, three-color printing can be performed.
[0041]
Accordingly, four-color printing can be easily obtained by using all of the first to fourth or two-color printing can be easily obtained by selecting and using the first and second colors. Moreover, the first to fourth plate cylinders 39, 41, 43, 45 and the ink supply devices 47, 49, 51, 53 can be arranged efficiently and simply along the outer peripheral surface of the transfer cylinder 23. It becomes possible.
[0042]
【The invention's effect】
As described above, according to the first aspect of the present invention, the fluorescent tube at the printing position is rotated by the rotating support about the fluorescent tube center axis and moved in the longitudinal direction lightly. Therefore, it is possible to obtain a clean spiral print without causing printing deviation or the like on the outer peripheral surface of the fluorescent tube.
[0043]
Further, by exchanging the original plate for the plate cylinder provided on the outer peripheral surface of the transfer cylinder, it is possible to cope with various types of printing.
[0044]
According to the second aspect of the present invention, the plate cylinder and the ink supply device can be efficiently arranged along the outer peripheral surface of the transfer cylinder, and the entire structure can be simplified.
[0045]
Also, by selecting and using the color of the ink of each ink supply device, multicolor printing can be performed.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of an outer peripheral surface printing device for a fluorescent tube formed in a rod shape according to the present invention.
FIG. 2 is an enlarged perspective view of a part of a transfer cylinder and a plate cylinder.
FIG. 3 is an enlarged perspective view of a printing position.
FIG. 4 is an operation explanatory diagram showing a relationship between a transfer cylinder and a fluorescent tube.
FIG. 5 is a schematic perspective view of a part of an ink supply device.
FIG. 6 is an explanatory view of a transmission mechanism between a transfer cylinder and a plate cylinder.
FIG. 7 is an explanatory view of advance / retreat adjustment of a plate cylinder.
FIG. 8 is a schematic explanatory view of a part in which characters and symbols are spirally printed on a fluorescent tube.
[Explanation of symbols]
3 Fluorescent tube 5 Printing device 7 Fluorescent tube supply device 23 Transfer cylinder 27 Rotary support 33 Driving means (drive motor)
39: first plate cylinder 47: ink supply device 55: original plate

Claims (2)

A fluorescent tube supply device for supplying a fluorescent tube formed in a rod shape to a printing position along a longitudinal direction; and a fluorescent tube provided at the printing position, the fluorescent tube being rotatable around a fluorescent tube central axis as a fulcrum, and along the longitudinal direction. And a transfer cylinder in which a rotation axis intersects and comes into contact with the outer peripheral surface of a rod-shaped fluorescent tube supported by the rotation support, and rotational power is given by driving means. And a plate cylinder for attaching an original plate provided with characters, symbols, patterns, etc. to be transferred to the outer peripheral surface of the transfer cylinder, wherein the plate cylinder is capable of moving forward and backward with respect to the outer peripheral surface of the transfer cylinder. An outer peripheral surface printing apparatus for a fluorescent tube formed in a rod shape. The fluorescent tube formed in a rod shape according to claim 1, wherein the plate cylinder has an ink supply device, and a plurality of the plate cylinder and the ink supply device are arranged along the outer peripheral surface of the transfer cylinder. Peripheral surface printing device.

Images