Tire marking device

Abstract

The present invention discloses a tire marking device. It comprises a marking machine housing, an up-and-down moving mechanism, a marking mechanism, a U-shaped pressure rod, and a ribbon supply mechanism; the ribbon supply mechanism is installed on one side of the marking machine housing, the up-and-down moving mechanism is installed on the inner wall of the marking machine housing, the output end of the up-and-down moving mechanism is connected to the marking mechanism, the marking mechanism is slidably installed in the marking machine housing, the marking mechanism is connected to the ribbon supply mechanism via the U-shaped pressure rod, and the ribbon is wound around the ribbon supply mechanism; the up-and-down moving mechanism drives the marking mechanism to move up and down to press the ribbon in the ribbon supply mechanism onto the tire for marking, and also drives the ribbon supply mechanism to move the fixed-length ribbon for replacement. The present invention only requires rotating the marking head so that the target pattern faces downward to mark the corresponding pattern. The marking angle is accurate, the effect is consistent, the ribbon utilization rate is high, and the scalability is strong. It realizes fast, accurate and effective fixed-length ribbon marking movement and solves the problem of ribbon waste.

Description

Technical Field

[0001] The invention relates to a mechanically automated fixed-length roll marking device, in particular to a tire marking device. Background Art

[0002] Currently, the main mechanism used for tire marking is to install multiple marking heads side by side. Each marking head has a different marking pattern and is independently driven by a different cylinder. The ribbon is wound by a motor. This structure has the following disadvantages:

[0003] 1. Because the marking heads are installed in parallel, different label patterns are marked at different positions on the tire surface, resulting in different marking angles and test results, or inaccurate results.

[0004] 2. Multiple marking heads lead to uneven heating between different marking heads, affecting the marking effect.

[0005] 3. Different marking heads contact the ribbon at different positions. In order to prevent the marking head from marking in the used ribbon area, it is often necessary to refresh the ribbon under all marking heads after marking a mark, which leads to ribbon waste.

[0006] 4. The method of installing multiple marking heads side by side has poor scalability. If more label patterns are required, more marking heads need to be installed in parallel, resulting in a bloated and complicated structure. Summary of the Invention

[0007] In order to solve the problems existing in the background technology, the present invention provides a tire marking device, which aims to solve the defects of the existing mechanism by changing the form of the marking head and the ribbon feeding mechanism.

[0008] The device of the present invention does not need to adopt a motor to wind the ribbon, and at the same time ensures that the length of the ribbon pulled each time is consistent, thereby reducing costs and avoiding waste of the ribbon.

[0009] The technical solution adopted in the present invention is:

[0010] The present invention comprises a marking machine housing, and an up-and-down moving mechanism, a marking mechanism, a U-shaped pressure rod and a ribbon supply mechanism installed in the marking machine housing;

[0011] The ribbon supply mechanism is installed on one side of the marking machine housing, the up and down moving mechanism is installed on the inner wall of the marking machine housing, the output end of the up and down moving mechanism is connected to the marking mechanism, the marking mechanism is slidably installed in the marking machine housing, the marking mechanism is connected to the ribbon supply mechanism via a U-shaped pressure rod, and the ribbon is wound in the ribbon supply mechanism; the up and down moving mechanism drives the marking mechanism to move up and down to press the ribbon in the ribbon supply mechanism onto the tire for marking, and also drives the ribbon supply mechanism to move the fixed-length ribbon for replacement.

[0012] The up and down moving mechanism includes a marking cylinder, which is fixed to the inner wall of the marking machine housing. The cylinder rod of the marking cylinder faces downward and is fixedly connected to the side of the marking mechanism through a cylinder connecting piece.

[0013] The marking mechanism includes a motor, a right-angle reducer, a polygonal marking head and a slide rail;

[0014] The motor body is installed on the right-angle reducer, which is connected to the output end of the up-and-down moving mechanism. At the same time, the right-angle reducer body is slidably connected to a vertical slide rail provided on one side of the inner wall of the marking machine housing. The right-angle reducer body is driven by the up-and-down moving mechanism to move up and down along the slide rail. The output shaft of the motor is decelerated by the right-angle reducer and then connected to the polygonal marking head.

[0015] The output shaft of the motor is arranged downward and is coaxially connected to the input shaft of the right-angle reducer. The output shaft of the right-angle reducer is arranged horizontally and is coaxially connected to the polygonal marking head.

[0016] A U-shaped pressure rod is installed on the output shaft of the right-angle reducer outside the polygonal marking head, and the U-shaped pressure rod is connected via the ribbon supply mechanism.

[0017] The polygonal marking head is provided with a heating ring for marking, and the heating ring is electrically connected to an external power supply via an electric slip ring.

[0018] A cover plate is also provided on one side of the marking machine housing.

[0019] The ribbon feeding mechanism comprises a mechanism frame, a ribbon shaft, a driving gear, a driven gear, a waste ribbon shaft, a ribbon roll, a waste ribbon roll and a ribbon guide shaft; the ribbon shaft is rotatably mounted on the mechanism frame, the driving gear is fixedly sleeved on the ribbon shaft, the waste ribbon shaft is rotatably mounted on the mechanism frame, the driven gear is fixedly sleeved on the waste ribbon shaft, and the driving gear is meshed with the driven gear; one end of the ribbon is wound around the ribbon shaft, and the other end is wound around the waste ribbon shaft, and the ribbon between the ribbon shaft and the waste ribbon shaft passes through a fixed-length driving assembly and a ribbon guide shaft, and the fixed-length driving assembly is used to drive the ribbon to move in a fixed length; the ribbon shaft is unidirectionally rotatable mounted on the mechanism frame through a one-way bearing, and the one-way bearing enables the ribbon shaft to rotate in a direction in which its upper surface can only approach one side of the waste ribbon shaft;

[0020] The U-shaped pressure rod is placed in the ribbon feeding mechanism. A horizontal raised plate is provided on the side of the U-shaped pressure rod close to the fixed-length drive assembly as a tape pressure plate. The tape pressure plate is connected to the top surface of the fixed-length drive assembly.

[0021] The ribbon shaft and waste shaft are both located at the upper part of the mechanism frame. Two ribbon guide shafts are arranged vertically spaced apart directly below the ribbon shaft and the waste shaft, so that the ribbon from the ribbon shaft to the waste shaft is arranged along a U-shaped path under the guidance of the ribbon guide shafts.

[0022] The fixed-length drive assembly is arranged at a vertically arranged section of ribbon below the waste ribbon shaft.

[0023] The fixed-length drive assembly includes a tension spring, a knurled cam and a pull-belt groove body. The pull-belt groove body can be movably installed on the mechanism frame parallel to the arrangement direction of the ribbon. At the same time, the top of the pull-belt groove body and the tension spring and the upper part of the mechanism frame are elastically connected. The pull-belt groove body is provided with a strip groove for the ribbon to pass through as a pull-belt groove. The ribbon is arranged through the strip groove. The knurled cam is installed inside the pull-belt groove body and extends into the strip groove to contact the ribbon.

[0024] The knurled cam is a cylindrical roller structure that is eccentrically hinged and installed, and the eccentric position is at the lower side away from the strip groove.

[0025] The surface of the knurled cam is processed with rough lines, and the rough lines are arranged on the surface of the side where the knurled cam extends into the strip groove and contacts the ribbon.

[0026] The color ribbon below the waste ribbon shaft is arranged vertically, and the ribbon drawing trough body is mounted on the mechanism frame so as to be movable up and down via a slide rail.

[0027] The drawstring groove body can be driven downward by external force.

[0028] The beneficial effects of the present invention are:

[0029] 1. The present invention adopts a single rolling marking head, and different label patterns are distributed at different angles of the marking head. When in use, you only need to rotate the marking head so that the target pattern faces downward to mark the corresponding pattern. This ensures that the positions of different patterns on the tire are consistent and the marking angle is accurate.

[0030] 2. The present invention adopts an integrated design of the heating ring (7) and the marking head. The heating ring (7) is always in contact with the marking head, and there is only a single marking head. The heating is evenly distributed everywhere, and the marking effect is consistent.

[0031] 3. The present invention adopts a single rolling marking head. After marking is completed, the ribbon supply mechanism (10) only needs to move one grid to refresh the ribbon (11) below the marking head, and the utilization rate of the ribbon (11) is high.

[0032] 4. The structure of the present invention has strong scalability. If more marking patterns are needed, it is only necessary to process the corresponding number of patterns on the marking head. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is an exploded view of the device of the present invention.

[0034] Figure 2 It is one of the three-dimensional diagrams of the device of the present invention.

[0035] Figure 3 It is one of the three-dimensional diagrams of the device of the present invention.

[0036] Figure 4 It is a structural diagram of the device of the present invention.

[0037] Figure 5 It is a side view of the device of the present invention.

[0038] Figure 6 It is a structural cross-sectional view of the fixed-length drive assembly.

[0039] Figure 7 This is a structural diagram of the device of the present invention after the ribbon is pulled down to a fixed length.

[0040] Figure 8 This is a structural diagram of the device of the present invention after the ribbon is returned to a fixed length.

[0041] In the figure: marking machine housing (1), motor (2), right-angle reducer (3), cylinder connector (4), marking cylinder (5), U-shaped pressure rod (6), heating ring (7), polygonal marking head (8), electric slip ring (9), ribbon supply mechanism (10), ribbon (11), cover plate (12), ribbon winding pressure plate (13), slide rail (14); mechanism frame (1001), one-way bearing (1002), ribbon shaft (1003), driving gear (1004), driven gear (1005), waste ribbon shaft (1006), ribbon roll (1007), waste ribbon roll (1008), ribbon guide shaft (1009), tension spring (1010), knurled cam (1011), ribbon pulling groove (1012). DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1-Figure 3 As shown, the device includes a marking machine housing 1 and an up and down moving mechanism, a marking mechanism, a U-shaped pressure rod 6 and a ribbon feeding mechanism 10 installed in the marking machine housing 1; the marking machine housing 1 is the main body of the tire marking device, and other components are installed inside it.

[0044] The ribbon supply mechanism 10 is installed on one side of the marking machine housing 1, and the up and down moving mechanism is installed on the inner wall of the marking machine housing 1. The output end of the up and down moving mechanism is connected to the marking mechanism. The marking mechanism can be slidably installed in the marking machine housing 1. The marking mechanism is connected to the ribbon supply mechanism 10 through the U-shaped pressure rod 6, and the ribbon 11 is wound in the ribbon supply mechanism 10; the up and down moving mechanism drives the marking mechanism to move up and down to press the ribbon 11 in the ribbon supply mechanism 10 onto the tire for marking, and also drives the ribbon supply mechanism 10 to move the fixed-length ribbon 11 for replacement.

[0045] By connecting the ribbon supply mechanism 10 via the U-shaped pressure rod 6 and ingeniously designing the structure, the fixed-length ribbon can be replaced while marking.

[0046] The up and down moving mechanism includes a marking cylinder 5, which is fixed to the inner wall of the marking machine housing 1. The cylinder rod of the marking cylinder 5 faces downward as the output end of the marking mechanism and is fixedly connected to the side of the right-angle reducer 3 of the marking mechanism through the cylinder connector 4.

[0047] The marking cylinder 5 drives the marking mechanism to move up and down as a whole.

[0048] The marking mechanism includes a motor 2, a right-angle reducer 3, a polygonal marking head 8 and a slide rail 14;

[0049] The motor 2 is mounted on the right-angle reducer 3, which is connected to the output end of the vertical movement mechanism. The right-angle reducer 3 is slidably connected to a vertical slide rail 14 provided on one side of the inner wall of the marking machine housing 1. Driven by the vertical movement mechanism, the right-angle reducer 3 moves up and down along the slide rail 14. The output shaft of the motor 2 is decelerated by the right-angle reducer 3 and then connected to the polygonal marking head 8. The polygonal marking head 8 is mounted on the output shaft of the right-angle reducer 3 via a bearing.

[0050] The output shaft of the motor 2 is arranged downward and is coaxially connected to the input shaft of the right-angle reducer 3 . The output shaft of the right-angle reducer 3 is arranged horizontally and is coaxially connected to the polygonal marking head 8 .

[0051] A U-shaped pressure rod 6 is mounted on the output shaft of the right-angle reducer 3 outside the polygonal marking head 8 , and the U-shaped pressure rod 6 is connected via a ribbon supply mechanism 10 .

[0052] The polygonal marking head 8 is equipped with a heating ring 7 for marking. The heating ring 7 is electrically connected to an external power source via an electric slip ring 9. The electric slip ring 9 is installed outside the U-shaped pressure rod 6 and is used to connect the wires of the heating ring 7 and other sensors, ensuring reliable communication of the wires during the rotation of the polygonal marking head 8.

[0053] A cover plate 12 is further provided on one side of the marking machine housing 1 , and the cover plate 12 is used to cover the side surface to protect the internal components.

[0054] The ribbon supply mechanism 10 is installed on the marking machine housing 1 to provide the ribbon 11 and refresh the ribbon 11 .

[0055] like Figure 4 and Figure 5 As shown, the ribbon supply mechanism 10 includes a mechanism frame 1001, a one-way bearing 1002, a ribbon shaft 1003, a driving gear 1004, a driven gear 1005, a waste ribbon shaft 1006, a ribbon roll 1007, a waste ribbon roll 1008 and a ribbon guide shaft 1009;

[0056] The ribbon shaft 1003 is rotatably mounted on the mechanism frame 1001 via a one-way bearing 1002. The one-way bearing 1002 allows the ribbon shaft 1003 to rotate only counterclockwise, not clockwise. The driving gear 1004 is fixedly mounted on the ribbon shaft 1003, driving the driving gear 1004 to drive the ribbon shaft 1003 to rotate in one direction. The waste ribbon shaft 1006 is rotatably mounted on the mechanism frame 1001 via a common bearing and can rotate freely. The driven gear 1005 is fixedly mounted on the waste ribbon shaft 1006, driving the driven gear 1005 to drive the waste ribbon shaft 1006 to rotate. The driving gear 1004 and the driven gear 1005 are engaged with each other, so that the ribbon shaft 1003 and the waste ribbon shaft 1006 can only rotate in one direction through the meshing transmission of the driving gear 1004 and the driven gear 1005.

[0057] One end of the ribbon is wound on the ribbon shaft 1003, and the other end is wound on the waste ribbon shaft 1006. The ribbon passes through the fixed-length drive component and the ribbon guide shaft 1009 between the ribbon shaft 1003 and the waste ribbon shaft 1006. The ribbon guide shaft 1009 guides the path of the ribbon. The fixed-length drive component is used to drive the fixed-length movement of the ribbon, winding it out from the ribbon shaft 1003 and winding it into the waste ribbon shaft 1006.

[0058] The ribbon is wound on the ribbon shaft 1003 to form a ribbon roll 1007 , and the ribbon roll 1007 is sleeved on the ribbon shaft 1003 . There is appropriate friction between the ribbon roll 1007 and the ribbon shaft 1003 .

[0059] The mechanism frame 1001 serves as a mounting bracket for all other components. The one-way bearing 1002 allows rotation in only one direction; it is locked and cannot rotate in the opposite direction. The ribbon shaft 1003 is mounted on the mechanism frame 1001 via the one-way bearing 1002 for unidirectional rotation. The one-way bearing 1002 allows the ribbon shaft 1003 to rotate in a direction that allows its top surface to only approach the waste spool 1006.

[0060] Four ribbon guide shafts 1009 are fixed to the mechanical frame 1001 and guide the ribbon. Both the ribbon spool 1003 and the waste spool 1006 are located at the top of the mechanical frame 1001. Directly below each spool are two vertically spaced ribbon guide shafts 1009. This ensures that the ribbon flows along a U-shaped path from the ribbon spool 1003 to the waste spool 1006, guided by the ribbon guide shafts 1009.

[0061] The fixed-length drive assembly is arranged at a vertically arranged section of the ribbon below the waste ribbon shaft 1006.

[0062] like Figure 6As shown, the fixed-length drive assembly includes a tension spring 1010, a knurled cam 1011 and a drawstring slot 1012. The drawstring slot 1012 can be movably installed on the mechanism frame 1001 parallel to the arrangement direction of the ribbon. At the same time, the top of the drawstring slot 1012 and the tension spring 1010 and the upper part of the mechanism frame 1001 are elastically connected. The drawstring slot 1012 is provided with a strip groove for the ribbon to pass through as a drawstring slot. The ribbon is arranged through the strip groove, and the knurled cam 1011 is installed inside the drawstring slot 1012 and extends into the strip groove to contact the ribbon.

[0063] The knurled cam 1011 is a cylindrical roller structure that is eccentrically hinged and installed, with the eccentric position being at the lower side away from the strip groove.

[0064] The surface of the knurled cam 1011 is processed with rough lines, and the rough lines are arranged on the side of the knurled cam 1011 that extends into the strip groove and contacts the ribbon. Under the action of gravity, the rough lines of the knurled cam 1011 are close to one side of the strip groove of the pull belt groove body 1012 and are used to contact the ribbon passing through the strip groove.

[0065] The two ends of the tension spring 1010 are respectively connected to the mechanism frame 1001 and the tension belt slot 1012 , so that the tension belt slot 1012 can slide to the upper position along the slide rail without the action of external force.

[0066] The ribbon below the waste ribbon shaft 1006 is arranged vertically, and the ribbon pulling groove body 1012 is installed on the mechanism frame 1001 and can move up and down through the slide rail, and can slide up and down along the slide rail.

[0067] The pull belt slot 1012 can be driven downward by the external force applied by the marking head above.

[0068] The bottom surface of the mechanism frame 1001 is provided with a notch through which the ribbon passes. The notch is used for the ribbon to contact the external object to be marked. A marking head for marking the object with the ribbon is arranged above the ribbon at the notch.

[0069] The U-shaped pressure rod 6 is placed in the ribbon feeding mechanism 10. The U-shaped pressure rod 6 is provided with a horizontal raised plate as a tape pressure plate 13 on the side close to the fixed-length drive assembly. The tape pressure plate 13 is connected to the top surface of the tape groove 12 of the fixed-length drive assembly, and is used to apply pressure to drive the tape groove 12 of the fixed-length drive assembly to move downward.

[0070] The tire marking device of the present invention includes a ribbon supply mechanism 10, wherein a fixed-length ribbon winding structure is provided in the ribbon supply mechanism 10, and the fixed-length ribbon winding movement and winding can be cleverly achieved through the fixed-length ribbon winding structure.

[0071] The present invention works as follows:

[0072] A tire is arranged below the marking machine housing 1 , and the surface of the tire to be marked is close to the notch on the bottom surface of the mechanism frame 1 of the ribbon feeding mechanism 10 , ready to be contacted by the ribbon.

[0073] According to the control of the host computer, the motor 2 drives the polygonal marking head 8 to rotate, and the polygonal marking head 8 rotates until the pattern corresponding to the required marking faces downward.

[0074] The rod of the marking cylinder 5 of the vertical movement mechanism extends downward, driving the entire marking mechanism downward. The polygonal marking head 8, with the pattern facing downward, presses the ribbon 11 downward, passing through the notch and contacting the tire. The ribbon 11 is clamped between the polygonal marking head 8 and the tire. Heating ring 7 generates high temperatures, and the hot marking head prints the ribbon 11 onto the tire surface. Simultaneously, the ribbon pressure plate 13 and the polygonal marking head 8 are driven downward by the output shaft of the right-angle reducer 3. This pressure plate 13 then drives the ribbon draw trough 12 in the ribbon feed mechanism 10 downward.

[0075] The rod of the marking cylinder 5 of the up-and-down moving mechanism retracts upward, driving the marking mechanism to move upward and reset as a whole, and the polygonal marking head 8 is separated from the ribbon 11, and the ribbon 11 is also separated from the tire surface without pressure;

[0076] At the same time, the tape pressure plate 13 and the polygonal marking head 8 are driven upward by the output shaft of the right-angle reducer 3. Due to the loss of the pressure of the tape pressure plate 13, the tape pulling groove 12 in the ribbon feeding mechanism 10 rises and moves back to the upper position under the action of the tension spring 10, and at the same time pulls the ribbon 11, so that the ribbon 11 at the notch is updated.

[0077] Repeat the above process of extending and retracting the rod of the marking cylinder 5 to carry out the marking process of the next cycle.

[0078] The implementation process of the ribbon supply mechanism 10 of the present invention is as follows:

[0079] When the circumferential force on the ribbon roll 1007 is greater than the friction force, the ribbon roll 1007 and the ribbon shaft 1003 can rotate relative to each other, which will cause the ribbon on the ribbon shaft 1003 to slip. If the fixed-length ribbon is wound by a motor, accurate fixed-length winding cannot be achieved.

[0080] In the present invention, after the ribbon of the ribbon roll 1007 is pulled out, it passes through four ribbon guide shafts 1009 and the ribbon pulling groove 1012 and is wound on the waste ribbon shaft 1006 to form a waste ribbon roll 1008. The waste ribbon shaft 1006 and the waste ribbon roll 1008 cannot rotate relative to each other.

[0081] When fixed-length winding is required, work as follows:

[0082] like Figure 7As shown, when the drawstring slot 1012 is moved downward by external force to overcome the tension of the tension spring 1010, the drawstring slot 1012 moves downward relative to the ribbon, causing the friction force generated by the ribbon contacting the knurled cam 1011 to rotate the knurled cam 1011 outward, causing the knurled cam 1011 to relax. In this way, since the relative movement direction of the drawstring slot 1012 and the ribbon is the same as the relaxation direction of the knurled cam 1011, the knurled cam 1011 and the drawstring slot 1012 have no pulling force on the ribbon. At the same time, due to the unidirectional rotation characteristics of the ribbon shaft 1003, the ribbon remains stationary, while the drawstring slot 1012 and the knurled cam 1011 move downward as a whole.

[0083] like Figure 8 As shown, when the external force is removed, the drawstring slot 1012 overcomes gravity and moves upward to its original position under the action of the tension spring 1010, and the drawstring slot 1012 moves upward relative to the ribbon. The friction force generated by the ribbon contacting the knurled cam 1011 will rotate the knurled cam 1011 inward, causing the knurled cam 1011 to continuously press the ribbon. In this way, since the relative movement direction of the drawstring slot 1012 and the ribbon is the same as the pressing direction of the knurled cam 1011, the knurled cam 1011 and the strip groove of the drawstring slot 1012 jointly clamp the ribbon and drive the ribbon to be pulled upward.

[0084] Then, a pulling force is applied to the drawstring groove 1012 to drive the drawstring groove 1012 to move downward, thereby continuously repeating the above process to achieve the process of ribbon relaxation - ribbon compression and upward movement.

[0085] Since the downward position of the drawstring slot 1012 and the position where the drawstring slot 1012 returns are both fixed positions, the ribbon can move at a fixed length between the downward position of the drawstring slot 1012 and the position where the drawstring slot 1012 returns.

[0086] A marking head is provided above the ribbon groove 1012. The external force applied by the marking head is applied to the top surface of the ribbon groove 1012, driving the ribbon groove 1012 downward. The marking head moves downward, and while marking, it also drives the ribbon groove 1012 downward, while the ribbon remains stationary.

[0087] After marking is completed, the marking head moves upward and the pressure on the pull tape slot 1012 is removed. The pull tape slot 1012 moves upward under the action of the tension spring 1010, pulling the ribbon to move at a fixed length. The marking head returns to its position and the fixed-length movement of the ribbon is completed at the same time, realizing the recycling of waste tape of fixed length and the release of new tape.

Claims

1. A tire marking device, characterized in that: It comprises a marking machine housing (1) and an up-and-down moving mechanism, a marking mechanism, a U-shaped pressure rod (6) and a ribbon supply mechanism (10) installed in the marking machine housing (1); The ribbon supply mechanism (10) is installed on one side of the marking machine housing (1), the up-down moving mechanism is installed on the inner wall of the marking machine housing (1), the output end of the up-down moving mechanism is connected to the marking mechanism, the marking mechanism is slidably installed in the marking machine housing (1), the marking mechanism is connected to the ribbon supply mechanism (10) via a U-shaped pressure rod (6), and the ribbon (11) is wound in the ribbon supply mechanism (10); the up-down moving mechanism drives the marking mechanism to move up and down to press the ribbon (11) in the ribbon supply mechanism (10) onto the tire for marking, and also drives the ribbon supply mechanism (10) to move the fixed-length ribbon (11) for replacement; The marking mechanism comprises a motor (2), a right-angle reducer (3), a polygonal marking head (8) and a slide rail (14); The motor (2) body is installed on the right-angle reducer (3), and the right-angle reducer (3) body is connected to the output end of the up-down moving mechanism. At the same time, the right-angle reducer (3) body is slidably connected to a vertical slide rail (14) provided on one side of the inner wall of the marking machine housing (1). The right-angle reducer (3) body is driven by the up-down moving mechanism to move up and down along the slide rail (14). The output shaft of the motor (2) is connected to the polygonal marking head (8) after being decelerated by the right-angle reducer (3). The polygonal marking head (8) adopts a single rolling marking head, and different label patterns are distributed at different angles of the polygonal marking head (8). When in use, it is only necessary to rotate the polygonal marking head (8) so that the target pattern faces downwards to mark the corresponding pattern, so that the positions of different patterns on the tire are consistent and the marking angle is accurate.

2. A tire marking device according to claim 1, characterized in that: The up-and-down moving mechanism comprises a marking cylinder (5), which is fixed to the inner wall of the marking machine housing (1), and the cylinder rod of the marking cylinder (5) faces downward and is fixedly connected to the side of the marking mechanism through a cylinder connector (4).

3. The tire marking device according to claim 1, characterized in that: The output shaft of the motor (2) is arranged downward and is coaxially connected to the input shaft of the right-angle reducer (3); the output shaft of the right-angle reducer (3) is arranged horizontally and is coaxially connected to the polygonal marking head (8).

4. The tire marking device according to claim 1, characterized in that: A U-shaped pressure rod (6) is mounted on the output shaft of the right-angle reducer (3) outside the polygonal marking head (8), and the U-shaped pressure rod (6) is connected via a ribbon supply mechanism (10).

5. The tire marking device according to claim 1, characterized in that: The polygonal marking head (8) is provided with a heating ring (7) for marking, and the heating ring (7) is electrically connected to an external power supply via an electric slip ring (9).

6. The tire marking device according to claim 1, characterized in that: A cover plate (12) is also provided on one side of the marking machine housing (1).

7. The tire marking device according to claim 1, characterized in that: The U-shaped pressure rod (6) is placed in the ribbon supply mechanism (10). The U-shaped pressure rod (6) is provided with a horizontal protrusion plate as a ribbon pressure plate (13) on a side close to the fixed-length drive assembly. The ribbon pressure plate (13) is connected to the top surface of the fixed-length drive assembly.

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