KR100438398B1 - a multicolored printing apparatus for tube - Google Patents

Abstract

The present invention provides a multi-color printing apparatus for a tube having a plurality of auxiliary printing parts to print various colors of characters at one time, wherein the amount of each ink delivery rollers in the process of delivering ink by the ink delivery rollers in the auxiliary printing part. The present invention relates to a multicolor printing apparatus for tubes, which allows the ink to be evenly applied evenly to the end.

The present invention, the main print drum having a printing pad is mounted to the center of the main body frame, the outer side of the printing portion is provided with a plurality of auxiliary printing portion for the primary printing on the surface of the printing pad; In the multi-color printing apparatus for a tube which is mounted on one side of the main body frame and continuously conveys the tube, and the tube conveying portion for the secondary printing of the multi-color character is first printed with the printing pad to the surface of the tube, the auxiliary The printing unit includes: an ink supply unit including a body having a storage unit in which printing ink is stored, and an ink supply roller rotating in the storage unit and supplying ink; An ink delivery unit comprising a plurality of ink delivery rollers for delivering ink supplied from the ink supply rollers; A printing plate provided on an outer surface of the printing pad and configured to print an ink deposited by the ink transfer roller on a surface of the printing pad; An auxiliary ink delivery unit comprising a plurality of auxiliary ink delivery rollers which receive ink from an ink delivery roller disposed at the center of the ink delivery unit, and apply the ink to a printing plate of the auxiliary printing drum; At least one feed roller comprising an inner casing slidably provided on a central axis between the ink transfer roller and the auxiliary ink transfer roller, and an outer roller which is freely mounted as a bearing on the outside thereof, is provided with the feed roller. Characterized in that the transfer unit for reciprocating back and forth on the central axis.

Description

Multicolored printing apparatus for tube

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for printing various characters on the surface of a tube, and more particularly, to a multicolor printing apparatus for a tube which enables printing of various colors of characters with a tube at one time.

In general, a container containing a gel-type cosmetics or drugs is used a lot of tube containers of synthetic resin material, the process of producing the tube container includes a printing process for printing a variety of characters or figures on the surface of the tube.

At this time, in order to increase the product value of the product by pursuing the diversification of the design, it is desirable to print a variety of colors, conventionally, in order to print a variety of colors as described above, the color to be transported and printed to print Since the number of steps must be as many as, the overall printing process is not only complicated, but also the printing apparatus is enlarged.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the object of the multi-color printing apparatus for a tube having a plurality of auxiliary printing unit to print a variety of colors of characters at once, the The present invention provides a multicolor printing apparatus for a tube that allows ink delivery rollers to be evenly applied to both ends of each ink delivery rollers evenly in the process of delivering ink from the auxiliary printing unit.

In addition, the present invention is to provide a multi-color printing apparatus for a tube to be able to always supply only a proper amount of ink in the process of supplying ink to the ink delivery roller.

In addition, the present invention is to provide a multi-color printing apparatus for a tube that can effectively remove foreign substances such as dust attached to the surface of the tube before printing.

In addition, the present invention is to provide a multi-color printing apparatus for a tube that can be heated to the appropriate temperature before printing to make the printing effectively, and also to prevent the tube from deforming during heating.

In addition, the present invention is to provide a multi-color printing apparatus for a tube to be able to accurately set the position of the tube before printing, when printing at a predetermined position on the tube.

In order to achieve the above object, the present invention provides a main printing drum having a printing pad in the center of the main body frame, and an outer side of the printing unit having a plurality of auxiliary printing parts for primary printing on the surface of the printing pad; ; In the multi-color printing apparatus for a tube is mounted on one side of the main frame frame and the tube conveying unit configured to continuously convey the tube, the multi-color character first printed with the printing pad to the second surface of the tube, the auxiliary The printing unit includes: an ink supply unit including a body having a storage unit in which printing ink is stored, and an ink supply roller rotating in the storage unit and supplying ink; An ink delivery unit comprising a plurality of ink delivery rollers for delivering ink supplied from the ink supply rollers; A printing plate is provided on an outer surface and comprises an auxiliary printing drum for printing the ink deposited by the ink delivery roller on the surface of the printing pad; receiving ink from the ink delivery roller disposed at the center of the ink delivery unit. An auxiliary ink transfer unit comprising a plurality of auxiliary ink transfer rollers applied to the printing plate of the auxiliary printing drum; between the ink transfer roller and the auxiliary ink transfer roller, an inner casing provided slidably on a central axis, and an outer side thereof; At least one feed roller consisting of an outer roller that is freely mounted to the bearing is provided, characterized in that it is provided with a transfer unit for reciprocating the feed roller back and forth on the central axis.

A printing unit having a main printing drum having a printing pad in a central portion of the main body frame, and having a plurality of auxiliary printing units having a primary printing on a surface of the printing pad; In the multi-color printing apparatus for a tube is mounted on one side of the main frame frame and the tube conveying unit configured to continuously convey the tube, the multi-color character first printed with the printing pad to the second surface of the tube, the auxiliary The printing unit includes: an ink supply unit including a body having a storage unit in which printing ink is stored, and an ink supply roller rotating in the storage unit and supplying ink; An ink delivery unit comprising a plurality of ink delivery rollers for delivering ink supplied from the ink supply rollers; A printing plate is provided on the outer surface and comprises an auxiliary printing drum for printing the ink deposited by the ink transfer roller on the surface of the printing pad; Rotating freely mounted on the central axis between the ink supply roller and the ink transfer roller. An auxiliary ink supply roller is provided, and one side thereof is provided with a lifting unit for reciprocating the auxiliary ink supply roller up and down.

A printing unit having a main printing drum having a printing pad in a central portion of the main body frame, and having a plurality of auxiliary printing units having a primary printing on a surface of the printing pad; In the multi-color printing apparatus for a tube is mounted on one side of the main frame and the tube conveying unit configured to continuously convey the tube, the multi-colored character primary printed by the printing pad to the secondary surface printed on the surface of the tube, The main The printing drum is characterized in that the dust removal portion is provided separately from the printing pad on the outer circumferential surface.

A printing unit having a main printing drum having a printing pad in a central portion of the main body frame, and having a plurality of auxiliary printing units having a primary printing on a surface of the printing pad; In the multi-color printing apparatus for a tube is mounted on one side of the main frame and a tube conveying unit for continuously conveying the tube, and the multi-color character first printed with the printing pad to the secondary surface printed on the surface of the tube, The tube The transfer part is composed of a turntable dividedly rotated at a predetermined angle with respect to the central axis, and a plurality of rods mounted on the front surface of the turntable at regular intervals; and in front of the turntable, the outer surface of the tube fixed on the rod is heated. Tube heating portion consisting of a heating rod, and the rod rod driving portion for rotating the rod from the heating rod to the completion point of the heating rod just before the mounting position is characterized in that it is provided.

A printing unit having a main printing drum having a printing pad in a central portion of the main body frame, and having a plurality of auxiliary printing units having a primary printing on a surface of the printing pad; In the multi-color printing apparatus for a tube is mounted on one side of the main frame and a tube conveying unit for continuously conveying the tube, and the multi-color character first printed with the printing pad to the secondary surface printed on the surface of the tube, The tube The transfer unit is composed of a turntable that is divided and rotated at a predetermined angle with respect to the central axis, and a plurality of rods mounted on the front of the turntable at regular intervals; and provided at the front of the turntable to detect a recognition mark formed on the tube to detect a signal. A detector for outputting; A motor driving unit having a motor operated by a signal of the sensing unit and having a driving shaft for transmitting the rotational force of the motor to the rod; And a tube setting unit including a motor lifting unit for moving the motor to detach and attach the driving shaft to the rod.

1 is a schematic view showing an embodiment of the present invention.

Figures 2a, b, c, d shows the auxiliary printing unit according to Figure 1,

2A is a perspective view.

Figure 2b is a main view showing the operating state of the feed roller.

Figure 2c is a sectional view showing the feed roller according to Figure 2b.

Figure 2d is a side schematic view showing an operating state of the auxiliary ink supply roller.

Figure 3 is a perspective view of the main print drum according to FIG.

Figure 4a, b is an operating state diagram showing another embodiment of the present invention.

Figure 5a, b is an operating state showing another embodiment of the present invention.

※ Explanation of codes for main parts of drawing

10: main frame

20: printing unit

21: main print drum

210: printing pad 211: dust removal unit

22: auxiliary printing unit

220: body

230: ink supply unit 231: storage unit

232: Ink Supply Roller

240: ink delivery unit 241: ink delivery roller

250: auxiliary ink delivery unit 251: auxiliary ink delivery roller

260: auxiliary printing drum

270 transfer part 271 round bar

271a: guide groove 272: feeder

272a: guide roller 273: connection

280: feed roller 281: inner casing

282: bearing 283: outer roller

290: Secondary Ink Feed Roller

300: lifting section 301: cylindrical cam

302: first rod 302a: cam roller

303: link shaft 304: second rod

30: tube transfer part

31: turntable 32: stand rod

40: tube heating part

41: heating unit

410: support 411: burner

412: gas supply section 413: spark plug

42: rod rod drive unit

420: motor 421: driving roller

50: tube setting part

51: detector

510: support 511: sensor

52: motor drive unit

520: motor 521: drive shaft

53: motor lifting unit

530: cylindrical cam 531: cam support

531a: elastic member 531b: first cam roller

531c: fixed cam 532: platform

532a: second cam roller

60: tube 61: recognition mark

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing an embodiment of the present invention, when explaining the overall configuration, the multi-color printing apparatus for a tube according to the present invention is mounted to the center of the main frame 10, the outer peripheral surface is provided with a printing pad (not shown) A plurality of main print drums 21 and auxiliary print units 22 mounted on the outside of the main print drums 21 and each of which has a primary print with a print pad of the main print drums 21. Section 20; Mounted to one side of the main body frame 10, the tube is continuously transported, and the multi-colored letters that are primarily printed by the printing pad (not shown) of the main print drum 21 is secondary printed to the surface of the tube It consists of the tube feed part 30.

At this time, the auxiliary printing unit 22 and the body 220 is fixed to the body frame 10; An ink supply unit 230 provided inside the body 220 and including a storage unit 231 for storing ink and an ink supply roller 232 rotating in the storage unit 231 to supply ink; An ink delivery unit 240 including a plurality of ink delivery rollers 241 for rotating and transferring the ink supplied from the ink supply rollers 232 to each other; The outer circumferential surface of the body is provided with a printing plate (not shown), and consists of an auxiliary printing drum 260 for printing the ink applied to the printing plate from the ink transfer roller 241 to the printing pad of the main printing drum 21. .

In addition, the tube transfer part 30 is mounted vertically to the main body frame 10 and is divided on the basis of the central axis of the turntable 31 and a plurality of racks that are freely mounted at equal intervals freely rotated on the turntable 31 Rod 32, the turntable 31 is divided by the index driving unit commonly used in various machine tools.

Referring to the driving relationship, the main print drum 21 is rotated by a motor (not shown) mounted on the body frame 10, the rotational force of each of the auxiliary printing section 22 in the power transmission method using a gear. And the auxiliary printing drum 260 mounted on the auxiliary printing unit 22 and each roller are rotated at a constant speed at the same time.

Accordingly, each sub-printing unit 22 first prints the letters of different colors with the printing pad of the main printing drum 21, and the tubes are fixed and transferred to the mounting rods 32 of the turntable 31. By printing at a time on the surface of can be achieved the object of the present invention.

In addition, the auxiliary printing unit 22 receives the ink from the ink delivery roller 241 located at the center of the ink delivery unit 240 to the lower side of the ink delivery unit 240 of the auxiliary printing drum 260 An auxiliary ink transfer part 250 including a plurality of auxiliary ink transfer rollers 251 configured to apply to a printing plate is provided to apply ink to the printing plate of the auxiliary printing drum 260 by applying ink in duplicate. The ink can be applied more densely.

Figure 2a, b, c, d is shown in the auxiliary printing unit according to Figure 1, the configuration and operation relationship will be described in detail as follows.

Figure 2a is a perspective view, showing the configuration of the auxiliary printing portion described in Figure 1, Figure 2b is a main view showing the operating state of the conveying roller, Figure 2c is a cross-sectional view showing the conveying roller according to Figure 2b, the ink delivery portion Between the ink delivery roller 241 and the auxiliary ink transfer roller 251 which respectively constitute the 240 and the auxiliary ink transfer unit 250, one or more transfer rollers 280 are provided; On one side of the body 220, the transfer roller 280 is shown to be provided with a transfer unit 270 to enable reciprocating movement left and right on the central axis.

At this time, the transfer unit 270 is provided to one side of the ink supply roller 232, the round bar 271 formed with a guide groove 271a along a constant curve to the outer peripheral surface; A guide roller 272a inserted into the guide groove 271a at one side thereof and having a center portion 272 hinged to the body 220; One side is fixed to the transfer table 272, the other side is composed of a connecting portion 273 fixed by the inner casing 281 of the transfer roller 280 described later.

In addition, the feed roller 280 is provided with an inner casing 281 and the outer peripheral surface of the inner casing 281 is mounted so as to slide on the central axis, the bearing 282 is between the inner casing and the inner casing It is comprised by the outer roller 283 which is attached and can rotate freely.

Therefore, as the round bar 271 rotates, the transfer table 272 performs a seesaw movement, and thus each transfer roller 280 is reciprocated left and right, so that each ink transfer roller in the ink delivery process is performed. The ink is evenly applied evenly to both ends of the field so that more reliable ink delivery can be achieved.

2D is a side schematic view showing an operating state of the auxiliary ink supply roller, and freely rotates on the central axis between the ink delivery roller 241 and the ink supply roller 232 positioned in front of the ink delivery unit 240. The auxiliary ink supply roller 290 is provided, and the lifting unit 300 for reciprocating it up and down is provided to one side of the auxiliary ink supply roller 290.

At this time, the lifting unit 300 is a cylindrical cam 301 provided to one side of the ink supply roller 232; A cam roller 302a corresponding to the cylindrical cam 301 on one side thereof, and a first rod 302 coupled to the link shaft 303 mounted horizontally; One side is coupled to the link shaft 303, the other side is composed of a second rod 304 coupled to the central shaft end of the auxiliary ink supply roller 290.

Accordingly, as the cylindrical cam 301 rotates, the cam roller 302a moves in the direction of the arrow, and the link shaft 303 rotates and the auxiliary ink supply roller 290 fixed on the second rod 304. It reciprocates up and down and can always supply only the right amount of ink.

3 is a perspective view illustrating the main printing drum according to FIG. 1, and as shown, the main printing drum 21 is provided with a dust removing unit 211 separately from the printing pad 210 as an outer circumferential surface. 211 is configured to have an adhesive force on the surface thereof, before the printing pad 210 contacts the outer surface of the tube in contact with the rotation direction of the main printing drum 21 so that printing is performed. 211) by first contacting to remove the dust attached to the outer surface of the tube, so that the printing can be made more effectively.

Figure 4a, b is an operating state diagram showing another embodiment of the present invention.

As shown in the drawing, the turntable 31 includes a heating part 41 provided to heat a tube fixed on one mounting rod, and immediately before the mounting rod 32 is fixed to the heating portion 41. While heating in place, there is provided a tube heating section (40) consisting of a rod rod drive section (42) provided to rotate the rack rod (32), and the heating section (41) is provided with the turntable (31). Located in front of the, and the support 410 is fixed on the body frame 10, the burner 411 is fixed to the support 410 and mounted so as to be spaced at a predetermined interval from the surface of the rod (32) and The gas supply unit 412 and the spark plug 413 are connected to the burner 411.

In addition, the mounting rod driving unit 42 is provided at a position corresponding to the heating unit 41 to the rear of the turntable 31, by the motor 420 mounted to the main body frame and by the motor 420 Rotation is composed of a drive roller 421 for transmitting a rotational force when in contact with the rear of the rod (32).

Therefore, when the turntable 31 is rotated and the rod 32 is positioned to the upper side of the burner 411, the tube 60 fixed on the rod 32 is rotated by the rod rod 42. Since the burner 411 is heated to an appropriate temperature, the surface of the tube 60 is heated to an appropriate temperature before printing is performed, thereby enabling more effective printing.

In addition, the motor 420 is mounted so as to deviate slightly from the same line as the burner 411, as shown in Figure 4a, the rod 32 as the turntable 31 rotates the upper side of the burner 411 Immediately prior to the position, the rear of the rod 32 is in contact with the drive roller 421 in advance, so that the position is rotated to the burner 411, as shown in Figure 4b It is possible to prevent the tube 60 from being deformed while the tube 60 is heated in place on the burner 411.

Figure 5a, b is an operating state diagram showing another embodiment of the present invention.

As shown, the turntable 31 includes: a sensing unit 51 provided with a sensor 511 for detecting a recognition mark 61 formed on the tube 60 on the support 510; A motor driving part 52 formed of a motor 520 controlled by the sensor 511 and a driving shaft 521 which is rotated by the motor 520 and transmits rotational force upon contact with the rod 32; The driving shaft 521 is provided with a tube setting unit 50 consisting of a motor lifting unit 53 for lifting and lowering the motor 520 so that the driving rod 521 is attached to and detached from the rod 32. The cylindrical cam 530 is mounted to the lower side of the main body frame 10; The first cam roller 531b corresponding to the cylindrical cam 530 is mounted to one side of the cylindrical cam 530 and has a lower portion hinged to the main body frame and supported by an elastic member 531a. A cam support 531 provided with a fixed cam 531c thereon; It is mounted to the upper side of the cam support 531, the second cam roller 532a corresponding to the fixed cam 531c is provided in the lower portion, the center portion is hinged and fixed to the main frame, the upper portion of the motor 520 It consists of a platform 532 is fixed to.

Therefore, when the turntable 31 is rotated and the rod 32 is in the correct position, the cylindrical cam 530 is rotated to move the cam support 531 in the direction of the arrow based on the hinge axis, and to the cam support 531. By the fixed cam 531c, the lifting table 532 performs the seesaw movement based on the hinge axis, and lowers the motor driving part 52 so that the driving shaft 521 contacts the rear of the rod 32.

After that, the sensor 511 controls the motor 520 and rotates until the recognition mark 61 formed on the outer surface of the tube 60 fixed on the rod 32 is detected. Allows you to enter the next step, the printing process, with a fixed position. This is to accurately set the position of the tube when printing is to be made at a predetermined position on the tube.

After the position of the tube 60 is set as described above, the motor driving portion 52 is returned to its original position by the elastic member 531a provided in the cam support 531, and the above process is repeated to continuously remove the tube. The exact position setting is made.

At this time, the motor 520 is a stepping motor (stepping motor) that is easy to control and can be rotated and stopped with high accuracy.

As described above, the present invention allows the ink to be evenly applied to both ends of the ink delivery roller in the process of delivering ink from the auxiliary printing part, thereby enabling more reliable ink delivery, thereby providing a high quality printing surface. Has

In addition, the auxiliary ink supply roller is configured to transfer the ink to the ink delivery roller while moving up and down, and has an effect of remarkably reducing the consumption of ink by always supplying only an appropriate amount of ink.

In addition, the dust removal portion is provided in the main printing drum to remove foreign matters such as dust adhered to the surface of the tube before printing, thereby preventing the deterioration of the quality of the printing surface by the foreign matter.

In addition, by heating the surface of the tube to a suitable temperature before printing with a tube heating portion, it is possible to effect the printing more effectively, and at the same time has the effect of preventing the tube from thermal deformation during the heating process.

In addition, when the printing is provided at a predetermined position on the tube by the tube setting part, since the position of the tube can be set accurately before printing, the printing surface can be formed accurately at the required position.

Claims (14)

delete delete delete delete The main print drum 21 having the print pad 210 is mounted at the center of the main body frame 10, and on the outside thereof, a plurality of auxiliary print parts 22 for primary printing on the surface of the print pad are provided. A printing unit 20; In the multi-color printing apparatus for a tube, which is mounted on one side of the main frame and continuously conveys the tube, the tube conveying portion 30 is configured to secondary print the multi-colored characters first printed with the printing pad to the surface of the tube. , The auxiliary printing unit may include an ink supply unit 230 including a body 220 having a storage unit 231 in which printing ink is stored, and an ink supply roller 232 rotating in the storage unit to supply ink; An ink delivery unit 240 including a plurality of ink delivery rollers 241 for delivering ink supplied from the ink supply rollers; A printing plate provided on an outer surface of the auxiliary printing drum 260 for printing the ink deposited by the ink transfer roller on the surface of the printing pad; An auxiliary ink delivery unit (250) comprising a plurality of auxiliary ink delivery rollers (251) for receiving ink from an ink delivery roller disposed at the center of the ink delivery unit and applying the ink to a printing plate of the auxiliary printing drum; A transfer roller 280 consisting of an inner casing 281 slidably provided on a central axis between the ink transfer roller and the auxiliary ink transfer roller, and an outer roller 283 freely mounted as a bearing 282 on the outside thereof. ) Is provided with at least one, multi-color printing apparatus for a tube, characterized in that provided with a conveying portion 270 for reciprocating the conveying roller back and forth on the central axis. The method of claim 5, wherein the transfer unit 270, An annular bar 271 provided on the center axis of the ink supply roller 232 and having a guide groove 271a formed at a constant curve on an outer circumferential surface thereof, and a guide roller 272a which is hinged and fixed at the center thereof and inserted into the guide groove to one side thereof are provided. Multi-color printing apparatus for a tube, characterized in that consisting of a feeder 272 provided, and a connecting portion (273) fixed to the inner side of the feed roller 280, one side is fixed to the feeder side. The main print drum 21 having the print pad 210 is mounted at the center of the main body frame 10, and on the outside thereof, a plurality of auxiliary print parts 22 for primary printing on the surface of the print pad are provided. A printing unit 20; In the multi-color printing apparatus for a tube, which is mounted on one side of the main frame and continuously conveys the tube, the tube conveying portion 30 is configured to secondary print the multi-colored characters first printed with the printing pad to the surface of the tube. , The auxiliary printing unit may include an ink supply unit 230 including a body 220 having a storage unit 231 in which printing ink is stored, and an ink supply roller 232 rotating in the storage unit to supply ink; An ink delivery unit 240 including a plurality of ink delivery rollers 241 for delivering ink supplied from the ink supply rollers; A printing plate provided on an outer surface of the auxiliary printing drum 260 for printing the ink deposited by the ink transfer roller on the surface of the printing pad; Between the ink supply roller and the ink delivery roller is provided with an auxiliary ink supply roller 290 that is freely mounted on the central axis, one side of the lifting unit 300 for reciprocating the auxiliary ink supply roller up and down Multicolor printing apparatus for a tube, characterized in that provided. The method of claim 7, wherein the lifting unit 300, A cylindrical cam 301 provided on the central axis of the ink supply roller 232, and a cam roller 302a in close contact with the outer surface of the cylindrical cam is provided on one side, the other side is on a horizontal link shaft 303 A first rod 302 fixed; The multi-color printing apparatus for a tube, characterized in that the one side is fixed on the link shaft and the other side is composed of a second rod (304) coupled to the central shaft end of the auxiliary ink supply roller (290). The main print drum 21 having the print pad 210 is mounted at the center of the main body frame 10, and on the outside thereof, a plurality of auxiliary print parts 22 for primary printing on the surface of the print pad are provided. A printing unit 20; In the multi-color printing apparatus for a tube, which is mounted on one side of the main frame and continuously conveys the tube, the tube conveying portion 30 is configured to secondary print the multi-colored characters first printed with the printing pad to the surface of the tube. , The main printing drum is a multi-color printing apparatus for the tube, characterized in that the outer peripheral surface is provided with a dust removal unit 211 separate from the printing pad. The main print drum 21 having the print pad 210 is mounted at the center of the main body frame 10, and on the outside thereof, a plurality of auxiliary print parts 22 for primary printing on the surface of the print pad are provided. A printing unit 20; In the multi-color printing apparatus for a tube, which is mounted on one side of the main frame and continuously conveys the tube, the tube conveying portion 30 is configured to secondary print the multi-colored characters first printed with the printing pad to the surface of the tube. , The tube conveying unit is composed of a turntable (31) divided and rotated at a predetermined angle with respect to the center axis, and a plurality of rods (32) mounted on the front surface at regular intervals on the turntable; In front of the turntable is a heating portion 41 for heating the outer surface of the tube fixed on the rod, and the rod rod driving portion 42 for rotating the rod from just before the heating rod to the completion point of the heating rod 42 Tube heating unit 40 consisting of a multi-color printing apparatus for a tube, characterized in that provided. The heating unit 41 according to claim 10, A burner (411) fixed to a support (410) installed in front of the turntable (31) and spaced apart from the surface of the rod (32) by a predetermined interval; Multi-color printing apparatus for a tube, characterized in that consisting of a gas supply unit 412 and the spark plug (413) for supplying gas to the burner. The method of claim 10, wherein the rod rod drive unit 42, A driving roller 421 provided at a position corresponding to the heating part 41 to the rear of the turntable 31 and transmitting a rotational force upon contact with the rear of the rod 32, and for driving the driving roller. Multicolor printing apparatus for a tube, characterized in that consisting of a motor (421). The main print drum 21 having the print pad 210 is mounted at the center of the main body frame 10, and on the outside thereof, a plurality of auxiliary print parts 22 for primary printing on the surface of the print pad are provided. A printing unit 20; In the multi-color printing apparatus for a tube, which is mounted on one side of the main frame and continuously conveys the tube, the tube conveying portion 30 is configured to secondary print the multi-colored characters first printed with the printing pad to the surface of the tube. , The tube conveying unit is composed of a turntable (31) divided and rotated at a predetermined angle with respect to the center axis, and a plurality of rods (32) mounted on the front surface at regular intervals on the turntable; A sensing unit 51 provided in front of the turntable 31 and sensing a recognition mark formed on the tube and outputting a signal; A motor driving unit 52 having a motor 520 operated by a signal of the sensing unit and having a driving shaft 521 for transmitting a rotational force of the motor to the rod 32; And a tube setting part (50) including a motor lifting part (53) for moving the motor so that the driving shaft is detachably attached to the rod. The motor lifting unit 53 of claim 13, A lift table 532 having an upper side fixed to the motor 520 side, a center portion rotatably fixed, and a second cam roller 532a disposed below; A fixing cam 531c corresponding to the second cam roller is provided at an upper portion thereof, and a lower portion thereof is rotatably fixed, and a first cam roller 531 b is provided at one side of the middle portion thereof, and the other side thereof is an elastic member 531 a. Cam support 531 is elastically supported by; A multicolor printing apparatus for a tube, which is driven by a motor and configured with a cylindrical cam 530 for pressing and releasing the first cam roller.