TWI703073B - Pipe surface marking pattern setting method, pipe finished product and marking device - Google Patents

Abstract

The invention relates to a method for setting a marking pattern on the surface of a pipe, a finished pipe and a marking device thereof. The finished pipe is provided with a plurality of continuous marking patterns on the outer surface by a heating printing method, and the marking device has a conveying unit and a heating embossing unit , A guide unit, an actuation unit, an adjustment unit, a belt change unit, a control unit, and can be set with a transfer belt and automatically heat-print the marking pattern on the transfer belt on the outer surface of the pipe for comparison The high printing efficiency also makes the outer surface of the pipe have a continuous and dense marking pattern for anti-counterfeiting effect.

Description

Pipe surface marking pattern setting method, pipe finished product and marking device

The invention relates to a method for setting a marking pattern on the surface of a pipe, a finished pipe product and a marking device thereof, and mainly refers to a method that can improve the convenience and anti-counterfeiting function of the marking pattern on the surface of the pipe.

Conventional pipes can provide fluids such as liquids, gases, etc., and can be made of plastic, metal, and other materials with a variety of different pipe diameters. The pipes are generally drawn and formed into long strips. In order to prevent counterfeiting, they are currently tied at appropriate intervals on the outer wall of the pipe. The manufacturer’s trademark or other specifications are marked by the laser, and in order to improve the printing efficiency, a marking pattern is usually printed every few meters on the long tube, so that the user can confirm its production by the marking pattern source.

However, users generally have to cut the pipe to the appropriate length after purchasing the pipe. If the length of the pipe after the cut is less than the distance between the marking patterns on the pipe, the marking pattern on the pipe will not be displayed, and the counterfeit pipe will be produced. To improve the aforesaid situation, intensive laser printing of marking patterns on pipes at smaller intervals will greatly increase the number of printing man-hours, and the low printing efficiency is not in line with the lack of economic benefits.

The purpose of the present invention is to provide a tube printing method, a finished product and a marking device that can intensively print marking patterns on the surface of the tube, and have better printing efficiency and anti-counterfeiting marking functions.

The method for setting the marking pattern on the surface of the tube of the present invention includes the following steps: S1. Setting a marking device, which can be heated and imprinted; S2. Setting a long transfer belt with continuous marking patterns; each marking pattern can be connected Or the interval is less than 50 CM; S3. Place the transfer belt and the tube at the position of the marking device; S4. Make the transfer belt stick to the outer surface of the tube, and heat and press to transfer the continuous marking pattern on the transfer belt To the outer surface of the pipe, and after the transfer belt is separated from the pipe, the outer surface of the pipe has a continuous marking pattern.

The marking device for marking patterns on the surface of a pipe of the present invention includes a conveying unit, a heating and embossing unit, a guiding unit, an actuation unit, and a control unit. The conveying unit has a number of bearing wheels and a number of actuation wheels that can drive the displacement of the tube. , The number of actuating wheels is driven by the transmission device; and the heating and embossing unit is arranged above the conveying unit, and mainly has a first lifting cylinder, a first heating device, an embossing wheel, the first heating device and the embossing wheel The first lifting cylinder drives the up and down displacement; and the guiding unit mainly has a first turntable and a number guide rod. The first turntable is provided with a transfer belt, and the transfer belt has a continuous marking pattern and each marking The edges of the pattern can be connected or separated by less than 50 CM; and the actuating unit has a transmission device that can drive the displacement of the transfer belt; and the control unit is electrically connected to the conveying unit, the heating and embossing unit, the guiding unit, and the actuating unit; and the conveying unit And the actuating unit drives the displacement of the pipe and the transfer belt respectively, and the heating and embossing unit causes the continuous marking pattern on the transfer belt to be printed on the outer surface of the pipe.

Furthermore, the supporting wheels of the conveying unit are arranged in a coplanar arrangement and can carry pipes; and the actuating wheels are arranged vertically above the supporting wheels in two sets at intervals, and the actuating wheels on one side are engaged with the adjusting rod, The distance between the two actuating wheels can be adjusted by the adjusting rod; and the transmission device has a motor and a transmission rod. The transmission rod is connected with the motor and the actuating wheel, and the motor can drive the transmission rod and the actuating wheel to rotate and make the pipe displaceable. The embossing unit further includes a preheating device, and a transmission device that can drive the embossing wheel to rotate, and the preheating device is arranged at a position above the conveying unit corresponding to the supporting wheel to preheat the pipe, including a second lifting cylinder , A second heating device, the second lifting cylinder can drive the displacement of the second heating device.

Furthermore, the guiding unit further includes a second turntable. The first and second turntables are respectively provided with a transfer belt and respectively have first and second rotating shafts. The first and second rotating shafts are respectively connected to a transmission device, and the actuation The unit further includes an actuating rod, a pressing rod, and a recovery rod. The transmission device of the actuating unit drives the moving rod to rotate, and the pressing rod is arranged on one side of the actuating rod, and the transfer belt can be clamped on the actuating rod. And the pressing rod; and the recovery rod and the actuating rod are linked and joined with the end of the transfer belt.

Further, the rotation rate of the actuating rod of the actuating unit is slightly faster than the rotation rate of the actuating wheel of the conveying unit, and the present invention further includes an adjustment unit which is arranged on the input side of the actuating unit and has an adjustment seat, two guide posts, and two Column, an adjustment block, an upper switch, a lower switch, the adjustment seat has a side wall, an upper wall, a lower wall, a hollow part in the center, and the two guide pillars are arranged on the upper and two sides of the adjustment seat and can be respectively attached to the guide Guide the transfer belt; and the two uprights are arranged between the upper and lower walls of the adjusting seat; and the two sides of the adjusting block have through holes that can penetrate the uprights, and the center has a horizontal bar that can be attached to the transfer belt; The printing tape can surround the lower edge of the horizontal bar of the adjustment block, and the adjustment block can be moved up and down on the column; and the adjustment block is provided with a contact rod that can abut the upper and lower switches; and the upper and lower switches are respectively set on the adjustment The upper and lower positions of the seat are respectively electrically connected with the transmission device of the actuating unit.

The present invention further includes a belt changing unit, which is arranged on one side of the first and second turntables of the guide unit, and includes a belt changing seat, a lower horizontal column, an upper horizontal column, an actuator, and a first sensor. The lower horizontal column is arranged under the belt changing base, the upper horizontal column is arranged above the corresponding lower horizontal column, and the actuator is arranged above the belt changing base and can drive the upper The horizontal column is displaced up and down; and the first and second sensors are respectively set at the positions corresponding to the first and second turntables, and are electrically connected to the actuator, and can sense whether the transfer belt on the first or second turntable is It is almost used up, and the transfer belt on the first or second turntable is inserted between the upper and lower horizontal columns of the belt change seat, and is guided to the heating and embossing unit by the guiding unit, and the second or first turntable The end of the upper transfer belt is attached to the lower horizontal column by a glue with a smaller adhesion force, and a glue with a higher adhesion force is joined above the end of the transfer belt.

The outer surface of the pipe of the present invention is provided with a plurality of consecutively arranged marking patterns corresponding to the axial direction of the main body. The edges of each marking pattern can be connected or the interval between adjacent marking patterns is less than 50 CM, and it can be used when the pipe is cut to a length of 50 CM or more. Observing the marking pattern on the outer surface can ensure that the pipe has a better anti-counterfeiting function, and the present invention can quickly print the marking pattern, which can have better marking efficiency.

The method for setting a pattern on the surface of a pipe of the present invention includes the following steps: S1. Set up a marking device that can be heated and imprinted; S2. Set up a long strip of transfer belt with continuous marking patterns; the edges of the marking patterns can be connected Or the interval is less than 50 CM; S3. Place the transfer belt and the tube at the position of the marking device; S4. Make the transfer belt stick to the outer surface of the tube, and heat and press to transfer the continuous marking pattern on the transfer belt To the outer surface of the pipe, and after the transfer belt is separated from the pipe, the outer surface of the pipe has a continuous marking pattern.

Please refer to Figures 1 to 4, the marking device of the present invention includes a conveying unit 1, a heating and embossing unit 2, a guide unit 3, an actuation unit 4, an adjustment unit 5, a tape changing unit 6, and a control unit 7. The conveying unit 1 has several supporting wheels 11, several actuating wheels 12, and a transmission device 13. The several supporting wheels 11 are arranged in a coplanar and evenly arranged position from the input side to the output side of the conveying unit 1, and can carry The pipe 9; and the number of actuating wheels 12 are two sets of two and arranged vertically above the supporting wheel 11 at intervals. The actuating wheel 12 on one side engages the adjusting rod 121, and the distance between the two actuating wheels 12 can be adjusted by the adjusting rod 121; The transmission device 13 has a motor 131 and a transmission rod 132. The transmission rod 132 is engaged with the motor 131 and the actuating wheel 12, and the motor 131 can drive the transmission rod 132 and the actuating wheel 12 to rotate and make the pipe 9 movable.

The heating and embossing unit 2 is arranged above the conveying unit 1, and includes a first lifting cylinder 21, a first heating device 22, an embossing wheel 23, a transmission device 24, a preheating device 25, and the first heating device 22 And the impression wheel 23 is driven by the first lifting cylinder 21 to a higher or lower position from the supporting wheel 11 of the conveying unit 1, and the first heating device 22 is an electric heating cover, and the transmission device 24 can drive the pressure The printing wheel 23 rotates, and the rotation rate of the printing wheel 23 corresponds to the rotation rate of the actuating wheel 12 of the conveying unit 1; and the preheating device 25 is arranged on the input side of the conveying unit 1 corresponding to the position above the supporting wheel 11, and includes a second Lifting cylinder 251, a second heating device 252, the second lifting cylinder 251 drives the second heating device 252 to move to a higher or lower position from the supporting wheel 11; the second heating device 252 is an electric heating cover.

The guiding unit 3 includes a first turntable 31, a second turntable 32, and a number guide rod 33. The first and second turntables 31, 32 can respectively be provided with a transfer belt 81, 82 wound in a circular ring shape. The transfer belts 81, 82 have successively arranged marking patterns 811, 821, respectively, and have first and second rotating shafts 311, 321, respectively. The first and second rotating shafts 311, 321 are respectively connected to a transmission device 312, 322 to provide a first , The two rotating shafts 311, 321 rotate torsion, and the number of guide rods 33 can guide the transfer belt 81, 82 to turn to the set position.

The actuation unit 4 includes a transmission device 41, an actuation rod 42, a compression rod 43, and a recovery rod 44. The transmission device 41 is a motor and drives the actuation rod 42 to rotate, and the compression rod 43 is arranged on the side of the actuation rod 42. , And enable the transfer belt 81 to be sandwiched between the actuating rod 42 and the compression rod 43 and be driven to move. The rotational speed of the actuating rod 42 is slightly faster than that of the actuating wheel 12 of the conveying unit 1; and the recovery rod 44 It is arranged above the pressing rod 43 to engage with the end of the transfer belt 81, and the recovery rod 44 is linked by the transmission belt 441 and the actuation rod 42 so that the recovery rod 44 can roll and recover the transfer belt 81.

The adjustment unit 5 is arranged on the input side of the actuation unit 4, and has an adjustment base 51, two guide posts 52, two uprights 53, an adjustment block 54, an upper switch 55, and a lower switch 56. The adjustment base 51 has side walls 511 and an upper switch. The wall 512 and the lower wall 513 have a hollow portion 514 in the center, and the two guide posts 52 are arranged on the upper two sides of the adjusting seat 51 and can be respectively attached to the guiding transfer belt 81; and the two uprights 53 are arranged on the adjusting seat 51 Between the upper and lower walls 512 and 513; and the adjustment block 54 has a through hole 541 on the two sides of the adjustment block 54 that can penetrate the column 53, and the center has a cross bar 542 that can be attached to the transfer belt 81; and the transfer belt 81 can be adjusted around The lower edge of the cross bar 542 of the block 54 and the adjustment block 54 can move up and down on the column 53; the adjustment block 54 is provided with a contact rod 543; and the up and down switches 55 and 56 are respectively provided on the adjustment seat 51, The lower position is electrically connected to the transmission 41 of the actuating unit 4, and when the contact rod 543 of the adjusting block 54 contacts the upper switch 55, the transmission 41 of the actuating unit 4 can be stopped, and the adjustment block 54 is moved down to make When the contact rod 543 contacts the lower switch 56, the transmission device 41 of the actuating unit 4 can be operated.

The belt changing unit 6 is arranged on the side of the first and second turntables 31 and 32 of the guide unit 3, and includes a belt changing seat 61, a lower horizontal column 62, an upper horizontal column 63, an actuating cylinder 64, and a first sensor. 65, a second sensor 66, the lower horizontal column 62 is arranged under the belt changing seat 61, and the upper horizontal column 63 is arranged at the position above the belt changing seat 61 corresponding to the lower horizontal column 62, and the actuator 64 is arranged Above the belt change seat 61, it can drive the upper horizontal column 63 to move up and down; and the first and second sensors 65 and 66 can be infrared or other sensors and are respectively arranged on the corresponding first and second turntables 31 , 32 position, and electrically connected to the cylinder 64, and can sense whether the transfer belt 81, 82 on the first or second turntable 31, 32 is about to run out, and make the transfer belt 81 on the first turntable 31 It can be inserted between the upper and lower horizontal columns 63 and 62 of the belt change seat 61, and is guided by the guide unit 3 to the heating and embossing unit 2, and the end of the transfer belt 82 on the second turntable 32 can be made of glue 822 It is attached to the lower horizontal column 62 with a small adhesive force, and a glue 823 with a relatively large adhesive force is joined to the upper end of the transfer belt 82.

The control unit 7 is electrically connected to the conveying unit 1, the heating and imprinting unit 2, the guiding unit 3, and the actuation unit 4, and can control or adjust the transmission 13 of the conveying unit 1 and the first and second heating devices of the heating and imprinting unit 2 22, 252, the first and second lifting cylinders 21, 251; the transmission device 312, 322 of the guide unit 3; the transmission device 41 of the actuation unit 4 moves.

Referring to Figures 4 and 5, when the present invention is implemented, transfer belts 81 and 82 can be set on the first and second turntables 31 and 32 of the guide unit 3, respectively, and the transfer belt 81 of the first turntable 31 can be inserted and replaced. Between the upper and lower horizontal columns 63 and 62 of the unit 6, and abut each guide rod 33 to extend above the corresponding conveying unit 1, below the adjustment block 54 of the adjustment unit 5, and the actuating rod 42 and the compression rod 43 of the actuating unit 4 The end of the transfer belt 82 on the second turntable 32 is attached to the top of the horizontal column 62 under the belt changing unit 6 by the glue 822, and the end of the transfer belt 82 The colloid 823 is set above.

The present invention allows the actuating wheel 12 of the conveying unit 1 to be adjusted by the adjusting rod 121 to adjust the distance between the corresponding pipes 9, and the control unit 7 causes the transmission device 13 of the conveying unit 1 to operate to rotate the actuating wheel 12, and to heat the first of the imprinting unit 2. The lifting cylinder 21 is lowered to heat the first heating device 22, and the transmission device 24 drives the printing wheel 23 to rotate. When the pipe 9 has a larger diameter, the second lifting cylinder 251 of the preheating device 25 can also be lowered and caused The second heating device 252 heats (not shown in the figure), and when the pipe 9 is placed on the supporting wheel 11 of the conveying unit 1 and the end is placed between the two actuating wheels 12, the pipe 9 can be driven to move, and the actuating unit 4 The transmission device 41 operates to rotate the actuating rod 42 and the recovery rod 44 and drive the transfer belt 81 to move, so that the tube 9 and the transfer belt 81 are located at the position corresponding to the printing wheel 23 and can be heated and marked on the transfer belt 81 The pattern 811 is transferred to the outer surface 91 of the pipe 9 and the outer surface 91 of the pipe 9 after the pipe 9 is led out by the conveying unit 1 can have a continuous marking pattern 92 corresponding to the transfer belt 81 (as shown in FIG. 10), and the marking patterns 92 can be connected or separated within 50 CM. Therefore, if the tube 9 is cut to a length of 50 CM or more, the marking pattern 92 can be displayed on the outer surface 91, which can ensure the anti-counterfeiting function.

Please refer to Figures 3, 5, 6, and 7, in the printing process of the present invention, the transmission devices 312, 322 of the first and second turntables 31, 32 can provide appropriate torque for pulling the transfer belts 81, 82, and the adjustment unit 5 is adjusted The weight of the block 54 can drive the transfer belt 81 to tighten to improve the smoothness of printing. When the adjustment block 54 moves down as shown in Fig. 6 so that the contact rod 543 contacts the lower switch 56, the actuation unit 4 can be activated as shown in Fig. 7 The actuating rod 42 rotates and displaces the transfer belt 81 so that the adjustment block 54 can be driven to move upward, and when the contact rod 543 is in contact with the upper switch 55, the actuating rod 42 of the actuating unit 4 is stopped from rotating, thus ensuring the transfer belt 81 to set the tension tightness operation to have better action and stability.

Please refer to Figures 4, 8, and 9, the present invention can be sensed by the first sensor 65 when the transfer belt 81 of the first turntable 31 is nearly used up, and the cylinder 64 of the belt changing unit 6 is activated to make the upper horizontal The column 63 is lowered, and the transfer belt 81 of the first turntable 31 is lowered to fit the end of the transfer belt 82 of the second turntable 32, and the upper horizontal column 63 is raised, so that the transfer from the second turntable 32 can be automatically switched The transfer belt 82 is a continuous printing industry, and the transfer belt 81 on the recycling rod 44 can be recycled.

In the present invention, another transfer belt 81 can be placed on the first turntable 31, and the end of the transfer belt 81 can be placed on the lower horizontal column 62 (not shown in the figure) as described above, and the second transfer belt 81 The sensor 66 senses that when the transfer belt 82 on the second turntable 32 is almost used up, the cylinder 64 is activated so that the transfer belt 81 on the first turntable 31 can continue the transfer operation (not shown in the figure), so It can guarantee long-term continuous operation to improve operation efficiency.

Please refer to Figure 10, the finished pipe 9 manufactured by the present invention has an outer surface 91, and the outer surface 91 is provided with a plurality of consecutively arranged marking patterns 92 corresponding to the axial direction of the pipe. The marking patterns 92 can be connected or the interval between adjacent marking patterns 92 is less than 50 CM Therefore, the tube 9 of the present invention can have a good labeling effect, and can also have the labeling pattern 92 when the length is more than 50 CM, which can have better labeling and anti-counterfeiting effects.

Therefore, the pipe of the present invention described above can have different labeling methods from the conventional pipes, and it can ensure that consumers can still clearly label the anti-counterfeiting effect when buying the cut pipes, and the present invention can have the function of rapid and convenient labeling. The turntable of the invention can also be provided with one, and the preheating device may not be provided. The foregoing embodiments are examples of the present invention and are not limited to the present invention. Any equivalent changes based on the spirit of the present invention should also fall within the scope of the present invention.

1‧‧‧Conveying unit 11‧‧‧Supporting wheel 12‧‧‧ Actuating wheel 121‧‧‧Adjusting lever 13‧‧‧Transmission device 131‧‧Motor 132‧‧‧Transmission lever 2‧‧‧Heat imprinting unit 21‧‧‧First lifting cylinder 22‧‧‧First heating device 23‧‧‧Imprinting wheel 24‧‧‧Transmission device 25‧‧‧Pre-heating device 251‧‧‧Second lifting cylinder 252‧‧‧Second Heating device 3‧‧‧Guiding unit 31‧‧‧First rotating disc 311‧‧‧First rotating shaft 312‧‧‧Transmission device 32‧‧‧Second rotating disc 321‧‧‧Second rotating shaft 322‧‧‧Transmission device 33 ‧‧‧Guide rod 4‧‧‧Actuating unit 41‧‧‧Transmission device 42‧‧‧Activating rod 43‧‧‧Compressing rod 44‧‧Recovering rod 441‧‧‧Transmission belt 5‧‧‧Adjusting unit 51‧ ‧‧Adjusting seat 511‧‧‧Side wall 512‧‧‧Upper wall 513‧‧‧Lower wall 514‧‧‧Hollow part 52‧‧‧Guide post 53‧‧Column 54‧‧‧Adjusting block 541‧‧‧Through hole 542‧‧‧Cross bar 543‧‧‧Touch bar 55‧‧‧Up switch 56‧‧‧Down switch 6‧‧‧Tape change unit 61‧‧‧Tape change seat 62‧‧‧Lower cross column 63‧‧‧Up Horizontal column 64‧‧‧ Actuating cylinder 65‧‧‧First sensor 66‧‧‧Second sensor 7‧‧‧Control unit 81‧‧‧Transfer belt 811‧‧‧Marking pattern 82‧‧‧Turn Printing tape 821‧‧‧ marking pattern 822‧‧‧ colloid 823‧‧‧ colloid 9‧‧‧ pipe 91‧‧‧ surface 92‧‧‧ marking pattern

Figure 1 is a three-dimensional schematic diagram of the tube marking device of the present invention.

Figure 2 is a schematic front view of the tube marking device of the present invention.

Figure 3 is a partial perspective view of the tube marking device of the present invention.

Figure 4 is a partial perspective view of the tube marking device of the present invention.

Figure 5 is a schematic diagram of the action of the tube marking device of the present invention.

Figure 6 is a schematic diagram of the action of the tube marking device of the present invention, showing that the actuating block is in conflict with the lower switch.

Figure 7 is a schematic diagram of the action of the tube marking device of the present invention, showing that the actuating block is in conflict with the upper switch.

Fig. 8 is a schematic diagram of the operation of the tape changing unit of the tube marking device of the present invention.

Figure 9 is a schematic diagram of the transfer belt of the second turntable of the tube marking device of the present invention.

Figure 10 is a schematic diagram of the finished pipe of the present invention.

1‧‧‧Conveying unit

11‧‧‧Support wheel

12‧‧‧Working wheel

121‧‧‧Adjusting lever

13‧‧‧Transmission device

131‧‧‧Motor

2‧‧‧Heating embossing unit

21‧‧‧First lifting cylinder

22‧‧‧The first heating device

25‧‧‧Preheating device

251‧‧‧Second Lifting Cylinder

252‧‧‧Second heating device

3‧‧‧Guide unit

31‧‧‧First turntable

311‧‧‧The first shaft

312‧‧‧Drive

32‧‧‧Second turntable

321‧‧‧second shaft

322‧‧‧ Transmission

33‧‧‧Guide rod

4‧‧‧ Actuating unit

41‧‧‧Transmission device

42‧‧‧ Actuating lever

43‧‧‧Compression lever

44‧‧‧Recycling rod

441‧‧‧Drive belt

5‧‧‧Adjustment unit

513‧‧‧Lower Wall

52‧‧‧Guide Post

53‧‧‧Column

54‧‧‧Adjustment block

55‧‧‧Up switch

56‧‧‧Down switch

6‧‧‧Tape change unit

61‧‧‧Replacement seat

62‧‧‧Lower Cross Column

63‧‧‧Upper Cross Column

64‧‧‧ Actuator

7‧‧‧Control Unit

81‧‧‧Transfer belt

Claims (8)

A marking device for marking patterns on the surface of a pipe, comprising: a conveying unit, a number of supporting wheels and a number of actuating wheels that can drive the displacement of the pipe, the number of actuating wheels are driven by the transmission device; a heating and embossing unit arranged above the conveying unit , It mainly has a first lifting cylinder, a first heating device, and an imprinting wheel. The first heating device and the imprinting wheel are driven by the first lifting cylinder to move up and down; a guiding unit mainly has a first Turntable, number guide rod, the first turntable is provided with a transfer belt, the transfer belt has a number of continuous marking patterns, each marking pattern can be connected or the interval is less than 50CM; an actuation unit with a transmission device can drive the displacement of the transfer belt ; A control unit, electrically connected to the conveying unit, heating and embossing unit, guide unit, and actuating unit; and the conveying unit and actuating unit respectively drive the displacement of the pipe and the transfer belt, and the heating and imprinting unit makes the transfer belt on The continuous marking pattern is printed on the outer surface of the pipe. The marking device for marking patterns on the surface of a pipe as described in claim 1, wherein the supporting wheels of the conveying unit are arranged side by side, and can carry the pipe; and the actuating wheels are two sets of two and arranged vertically at intervals Above the wheel, the actuating wheel on this side is engaged with the adjusting rod, and the distance between the two actuating wheels can be adjusted by the adjusting rod; and the transmission device has a motor and a transmission rod. The transmission rod is connected with the motor and the actuating wheel, and the motor can drive the driving rod and The actuating wheel rotates and the pipe can be displaced. The marking device for marking a pattern on the surface of a pipe according to claim 1, wherein the heating and imprinting unit further includes a preheating device, and a transmission device can drive the printing wheel to rotate, and the preheating device can preheat the pipe , Arranged at a position above the corresponding bearing wheel of the conveying unit, and including a second lifting cylinder and a second heating device, and the second lifting cylinder can drive the displacement of the second heating device. The marking device for marking patterns on the surface of a tube as described in claim 1, wherein the guiding unit further includes a second turntable. The first and second turntables are respectively provided with a transfer belt and respectively have first and second rotating shafts. The first and second rotating shafts are respectively connected with a transmission device. The marking device for marking the surface of the pipe according to claim 1, wherein the actuating unit includes an actuating rod, a compression rod, and a recovery rod. The transmission device of the actuating unit drives the actuating rod to rotate, and the compression rod is arranged at On one side of the actuating rod, the transfer belt can be clamped between the actuating rod and the compression rod; and the recovery rod is linked with the actuating rod and joined with the end of the transfer belt. The marking device for marking patterns on the surface of a pipe as described in claim 5, wherein the rotation rate of the actuating rod of the actuating unit is slightly faster than the rotation rate of the actuating wheel of the conveying unit, and further includes an adjustment unit which is arranged on the input side of the actuating unit , With an adjustment seat, two guide posts, two uprights, an adjustment block, an upper switch, a lower switch, the adjustment seat has a side wall, an upper wall, a lower wall, a hollow part in the center, and the two guide posts are set in the adjustment The upper two sides of the seat can be respectively attached to the guide transfer belt; and the two uprights are arranged between the upper and lower walls of the adjusting seat; and the two sides of the adjusting block are respectively provided with through holes that can penetrate the uprights, and the center can be attached Rely on the cross bar of the transfer belt; and make the transfer belt surround the lower edge of the cross bar of the adjustment block, and the adjustment block can move up and down on the column; and the adjustment block can be set against the up and down switches Contact rod; and the upper and lower switches are respectively arranged on the upper and lower positions of the adjusting seat, and are respectively electrically connected with the transmission device of the actuating unit. The marking device for marking patterns on the surface of a pipe as described in claim 4, which further includes a tape changing unit, which is arranged on one side of the first and second turntables of the guide unit, and includes a tape changing seat and a lower horizontal column , An upper horizontal column, an actuator, a first sensor, a second sensor, the lower horizontal column is arranged under the belt change seat, and the upper horizontal column is arranged above the corresponding lower horizontal column, and The actuating cylinder is arranged above the belt change seat and can drive the upper horizontal column to move up and down; and the first and second sensors are respectively set at the positions corresponding to the first and second turntables, and are electrically connected to the actuating cylinder. Detect whether the transfer belt on the first or second turntable is running out. The marking device for marking the pattern on the surface of the tube as described in claim 7, wherein the transfer belt on the first or second turntable is inserted between the upper and lower horizontal columns of the belt change seat and is guided to the heating pressure by the guiding unit The printing unit, and the end of the transfer belt on the second or first turntable is attached to the lower horizontal column by a glue with a smaller adhesion force, and a glue with a higher adhesion force is joined above the end of the transfer belt .

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