CN210652358U

CN210652358U - Marking device for tire dynamic balance and uniformity testing machine

Info

Publication number: CN210652358U
Application number: CN201921186340.2U
Authority: CN
Inventors: 姜超浪; 李文刚; 姜昌胜; 张文峰
Original assignee: Beijing Langshengfeng Measurement And Control Technology Co ltd
Current assignee: Beijing Langshengfeng Measurement And Control Technology Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-06-02
Anticipated expiration: 2029-07-25

Abstract

The utility model relates to a tire dynamic balance and homogeneity testing machine are with beating mark device, including mounting panel and installing typewriter ribbon transmission mechanism, the mark head of beating, beating mark cylinder and parcel in beating and beating the mark head outside the mark head of beating and heating the mechanism of beating the mark head of beating in one side of mounting panel, beat the mark head and be located typewriter ribbon transmission mechanism top; the marking cylinder drives the marking head to impact the side surface of the tire; one side of the mounting plate, which is back to the color band transmission mechanism, is provided with a fixing plate parallel to the mounting plate, and one end of the mounting plate is hinged with the fixing plate through a pivot; the marking device further includes: the marking device comprises a connecting frame, a lifting mechanism and a marking inclination angle adjusting mechanism, wherein the lifting mechanism is arranged on the connecting frame and used for driving a fixing plate to move along the vertical direction, and the marking inclination angle adjusting mechanism is used for driving a mounting plate to rotate around a pivot. The advantages are that: when the marking is carried out on tires with different specifications, the inclination angle of the dotting header can be adjusted, so that the dotting header can be perpendicular to the position to be marked on the tire side surface when the marking is carried out.

Description

Marking device for tire dynamic balance and uniformity testing machine

Technical Field

The utility model relates to a tire dynamic balance and homogeneity check out test set technical field especially relate to a tire dynamic balance and homogeneity test machine are with beating mark device.

Background

The tire is to be tested for two indexes of dynamic balance and uniformity before leaving the factory, a hot-stamping marking device is configured on the testing equipment to mark the testing result, and in the marking process, the testing result of the tire is usually marked by using a scheme (called as "tire testing result marking pattern combination") generated by combining a plurality of colors and a plurality of shapes, so that the testing result is displayed to a user.

Chinese patent No. CN201420594733.8 discloses a dotting device for a tire uniformity testing machine, which comprises a pushing cylinder, a T-shaped hook clamp, a marking device, a ribbon moving device, an alarm device and a heating device, which are mounted on a bottom plate; the marking device comprises a marking cylinder and a marking head, wherein the marking cylinder is used for driving the marking head and the ribbon moving device; the ribbon moving device is used for moving the ribbon; the warning device is used for detecting the use condition of the color band in the color band moving device and giving out early warning when the color band is not available; and the heating device is used for heating the dotting header.

When above-mentioned automatic marking device of dotting of tire dynamic balance marks the tire, the tire is arranged in its below, and heating device heats the mark head of dotting, and the typewriter ribbon butt in the outside of tire child side, then control promotes cylinder and promotes T type hook pincers bearing in the inboard of tire child side, then control and beat the mark cylinder striking and beat the mark head, make the mark head of dotting that has the uniform temperature striking typewriter ribbon to on the side of tire child is printed to the dyestuff on the typewriter ribbon. However, since the sidewall surface of the tire is an arc surface with a certain radian, when the tire is marked, the dotting head is required to be perpendicular to the to-be-marked position of the sidewall surface of the tire (when the current manufacturer marks the sidewall surface of the tire, the marking point is required to be positioned on the same circumference of the sidewall surface of the tire at a fixed distance from the central axis of the tire when the tire with the same specification is marked), otherwise, the phenomenon of incomplete dotting can occur. Because the radians of the tire side surfaces of tires with different specifications are different, the marking device is required to adjust the inclination angle of the dotting mark head (namely the included angle between the dotting mark head and the vertical straight line) when the tire is marked, so that the dotting mark head can be perpendicular to the position to be marked on the tire side surface of the tire when the tire is marked, and the marking device can mark a complete mark on the tire.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tire dynamic balance and homogeneity testing machine are with beating mark device is provided, its advantage: when the marking is carried out on tires with different specifications, the inclination angle of the dotting header can be adjusted, so that the dotting header can be perpendicular to the position to be marked on the tire side surface when the marking is carried out.

The above object of the present invention can be achieved by the following technical solutions: a marking device for a tire dynamic balance and uniformity testing machine comprises a mounting plate, a color tape transmission mechanism, a dotting header, a marking cylinder and a heating mechanism, wherein the color tape transmission mechanism, the dotting header, the marking cylinder and the heating mechanism are mounted on one side of the mounting plate; the marking cylinder drives the marking head to impact the side surface of the tire; one side of the mounting plate, which is back to the color band transmission mechanism, is provided with a fixing plate parallel to the mounting plate, and one end of the mounting plate is hinged with the fixing plate through a pivot;

the marking device further includes: the marking device comprises a connecting frame, a lifting mechanism and a marking inclination angle adjusting mechanism, wherein the lifting mechanism is arranged on the connecting frame and used for driving a fixing plate to move along the vertical direction, and the marking inclination angle adjusting mechanism is used for driving a mounting plate to rotate around a pivot.

Through the technical scheme, the mounting plate can be driven to rotate around the pivot through the marking inclination angle adjusting mechanism, so that the dotting head mounted on the mounting plate rotates along with the mounting plate, the inclination angle of the dotting head is adjusted, and the dotting head is perpendicular to the tire side surface to be dotted when marking work is carried out.

The utility model discloses further set up to: beat mark inclination adjustment mechanism and include automatic extensible member and slide the guide rail of connection on the link, the guide rail is in slide along vertical direction on the link, guide rail lower extreme and fixed plate rigid coupling, automatic extensible member one end is articulated with the guide rail upper end, and the pivot is kept away from with the mounting panel to the other end one end articulated.

Through the technical scheme, when the automatic telescopic piece extends, the mounting plate can be driven to rotate downwards around the pivot; when the automatic telescopic piece is shortened, the mounting plate can be driven to rotate upwards around the pivot; therefore, the inclination angle of the dotting header can be adjusted by controlling the extension or the contraction of the automatic telescopic piece. Correspondingly, when the lifting mechanism drives the fixed plate to move up and down, the marking inclination angle adjusting device and the mounting plate can also move up and down along with the fixed plate, and the inclination angle of the marking head can not change along with the movement of the fixed plate.

The utility model discloses further set up to: one side rigid coupling of mounting panel towards the fixed plate has a spacing post, use the pivot to seted up an arc spacing hole with the tie point of fixed plate as the centre of a circle on the fixed plate, spacing post inserts in the spacing hole of arc.

Through above-mentioned technical scheme, spacing hole of arc and pivot cooperation can be injectd the installation board around the pivot for the angle of fixed plate rotation.

The utility model discloses further set up to: the automatic telescopic part is a trapezoidal screw rod type electric push rod driven by a servo motor.

Through the technical scheme, the trapezoidal screw rod type electric push rod is high in impact resistance, so that the automatic telescopic piece is not easy to stretch after receiving impact, and the inclination angle of the dotting mark head is not easy to change under the action of external force after people finish adjusting the inclination angle of the dotting mark head; the servo motor drives the trapezoidal lead screw type electric push rod, so that the adjusting precision of the marking inclination angle adjusting mechanism is high, the reaction is fast, and the control and the use are easy.

The utility model discloses further set up to: the lifting mechanism comprises a brake cylinder and a travel switch, the brake cylinder is arranged along the vertical direction, a cylinder body of the brake cylinder is fixedly connected with the connecting frame, and a piston rod of the brake cylinder is fixedly connected with the fixed plate; the travel switch is installed at the bottom of the installation plate.

By adopting the technical scheme, the fixed plate, the mounting plate, the marking inclination angle adjusting mechanism, the color tape conveying mechanism, the marking head, the marking cylinder and the heating mechanism can be driven to synchronously ascend and descend by controlling the extension and the shortening of the brake cylinder; when the brake cylinder extends to drive the fixing plate, the mounting plate, the marking inclination angle adjusting mechanism, the color tape transmission mechanism, the marking head, the marking cylinder and the heating mechanism to synchronously move downwards, and when a color tape arranged on the color tape transmission mechanism is abutted against the side surface of a tire, the travel switch is triggered to stop the brake cylinder from extending; when the travel switch is triggered, the piston rod of the brake cylinder can be immediately held tightly due to the structure of the brake cylinder, so that the piston rod is prevented from further extending out of the cylinder body due to inertia, and the precision of the lifting mechanism is improved.

The utility model discloses further set up to: the ink ribbon transmission mechanism comprises an ink ribbon guide component, an ink ribbon unwinding component and an ink ribbon winding component, wherein the ink ribbon guide component is arranged on the mounting plate and is positioned right below the dotting header; the color band guide assembly is provided with a space for the dotting header to pass through; the ribbon unwinding assembly comprises an unwinding wheel which is rotationally connected to the mounting plate through a rotary damper; the ribbon winding component comprises a winding wheel in running fit with the mounting plate and a winding motor for driving the winding wheel to rotate.

According to the technical scheme, when the winding device is used, the color tape roll is arranged on the unwinding wheel, and the free end of the color tape roll is wound on the winding wheel after bypassing the color tape guide assembly from the lower part of the color tape guide assembly; when the winding motor drives the winding wheel to rotate, the ribbon can be continuously wound on the winding wheel and continuously discharged from the unwinding wheel; the unwinding wheel is rotationally connected to the mounting plate through the rotary damper, so that the phenomenon that when the winding wheel stops winding the color ribbon, the color ribbon is folded at a point to be printed on the side surface of the tire due to further rotation of the unwinding wheel caused by inertia, and a complete mark cannot be printed on the tire can be avoided; meanwhile, the color band is in a tight state constantly when the color band is wound by the winding wheel.

The utility model discloses further set up to: the ribbon guide assembly comprises four guide rollers rotatably connected with the mounting plate, the connecting lines of the four guide rollers are inverted trapezoids, and the lower bottom edge of each inverted trapezium is perpendicular to the dotting header.

Through the technical scheme, the four guide rollers change the direction of the color tape, so that the part of the color tape between the two guide rollers at the lowest part is parallel to the bottom surface of the marking head, and the marking device can mark a complete mark on the side surface of the tire.

The utility model discloses further set up to: the heating mechanism comprises a fixed heat-conducting block fixed on the mounting plate and an electric heating rod arranged in the fixed heat-conducting block in a penetrating manner; the dotting header penetrates through the fixed heat conducting block and is in sliding fit with the fixed heat conducting block.

Through above-mentioned technical scheme, the electrical heating stick gives off the heat to on conducting the mark head of beating the point with heat conduction through fixed heat conduction piece, heat the mark head of beating the point, thereby make the mark head of beating the point press the typewriter ribbon to tire child side when waiting to beat a department, can be with the dyestuff on the typewriter ribbon seal to the tire.

The utility model discloses further set up to: the dotting header comprises a sliding rod, a hot stamping head and an anti-falling head, wherein the sliding rod is arranged on the fixed heat conducting block in a penetrating mode, the hot stamping head is connected to the lower end of the sliding rod in a threaded mode, the anti-falling head is fixedly connected to the upper end of the sliding rod, a spring is sleeved on the sliding rod, one end of the spring is abutted to the fixed heat conducting block, and the other end.

Through the technical scheme, in a normal state, a certain gap is reserved between the lower end of the dotting header and the color tape due to the arrangement of the spring, so that the color tape is prevented from being burnt out due to the long-time contact between the dotting header and the color tape; when beating the mark cylinder striking and beat a mark head upper end, beat a mark head and can the downstream to press the typewriter ribbon to tire child side and wait to beat a department, with the dyestuff on the typewriter ribbon seal to the tire, beat afterwards and beat the mark cylinder and shorten, beat a mark head and reset.

To sum up, the utility model discloses a beneficial technological effect does:

1. when tires with different specifications are marked, the inclination angle of the dotting mark head can be adjusted, so that the dotting mark head can be perpendicular to a position to be marked on the tire side surface when the marking is carried out, and the success rate of marking a complete mark on the tire side surface by the marking device is improved;

2. the trapezoidal screw rod type electric push rod is high in impact resistance, so that the automatic telescopic piece is not easy to stretch after receiving impact, and the inclination angle of the dotting mark head is not easy to change under the action of external force after people finish adjusting the inclination angle of the dotting mark head;

3. the servo motor drives the trapezoidal screw rod type electric push rod, so that the marking inclination angle adjusting mechanism is high in adjusting precision, quick in response and easy to control and use;

4. when the travel switch is triggered, the piston rod of the brake cylinder can be immediately held tightly due to the structure of the brake cylinder, so that the piston rod is prevented from further extending out of the cylinder body due to inertia, and the precision of the lifting mechanism is improved;

5. the unwinding wheel is rotationally connected to the mounting plate through the rotary damper, so that the phenomenon that when the winding wheel stops winding the color ribbon, the color ribbon is folded at a point to be printed on the side surface of the tire due to further rotation of the unwinding wheel caused by inertia, and a complete mark cannot be printed on the tire can be avoided; meanwhile, the color band is in a tight state constantly when the color band is wound by the winding wheel.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

fig. 3 is a rear view of the present invention;

fig. 4 is a detail view of the guide roller.

In the figure, 1, a connecting frame; 2. mounting a plate; 21. a pivot; 3. a ribbon transport mechanism; 31. a ribbon guide assembly; 311. a guide roller; 312. positioning a groove; 32. a ribbon unwinding assembly; 321. a rotary damper; 322. unwinding wheels; 33. a ribbon take-up assembly; 331. a winding motor; 332. a winding wheel; 4. dotting the header; 41. a slide bar; 42. a printing head is stamped; 43. the head is prevented from falling off; 44. a spring; 5. marking a cylinder; 51. a support plate; 6. a heating mechanism; 61. fixing the heat conducting block; 62. an electrical heating rod; 7. a fixing plate; 8. a lifting mechanism; 81. a brake cylinder; 82. a travel switch; 9. a marking inclination angle adjusting mechanism; 91. an automatic telescopic member; 92. a guide rail; 93. a sliding sleeve; 94. a connecting plate; 95. a limiting column; 96. an arc-shaped limiting hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the marking device for the tire dynamic balance and uniformity testing machine disclosed by the present invention comprises a connecting frame 1, a mounting plate 2 arranged on one side of the connecting frame 1, a color tape transmission mechanism 3 arranged on one side of the mounting plate 2 opposite to the connecting frame 1, a marking head 4, a marking cylinder 5 and a heating mechanism 6 wrapped outside the marking head 4 for heating the marking head 4; a fixing plate 7 is arranged between the mounting plate 2 and the connecting frame 1, one end of the mounting plate 2 is hinged with the fixing plate 7 through a pivot 21, and a lifting mechanism 8 for driving the fixing plate 7 to move along the vertical direction and a marking inclination angle adjusting mechanism 9 for driving the mounting plate 2 to rotate around the pivot 21 are arranged on the connecting frame 1.

Referring to fig. 1 and 2, the heating mechanism 6 includes a fixed heat-conducting block 61 bolted to a lower portion of the mounting plate 2 on a side opposite to the connecting frame 1, and an electric heating rod 62 inserted into the fixed heat-conducting block 61. When the dotting machine works, the electric heating rod 62 heats the fixed heat conducting block 61, and the fixed heat conducting block 61 transmits heat to the dotting header 4, so that the dotting header 4 is heated.

Referring to fig. 1 and 2, the dotting header 4 includes a sliding rod 41 penetrating through the upper and lower sides of the fixed heat conducting block 61 and slidably fitting with the fixed heat conducting block 61, a thermal head 42 screwed to the lower end of the sliding rod 41, a drop-proof head 43 fixedly connected to the upper end of the sliding rod 41, and a spring 44 sleeved on the sliding rod 41; one end of the spring 44 abuts against the retaining head 43, and the other end abuts against the fixed heat-conducting block 61.

The marking cylinder 5 is arranged on one side of the anti-falling head 43, which faces away from the sliding rod 41, and is in the same straight line with the marking head 4. The cylinder body of the marking cylinder 5 is fixedly connected to the mounting plate 2 through a support plate 51, and the piston rod of the marking cylinder 5 faces the marking head 4. It is worth noting that, in the normality, a certain distance is left between the piston rod of the marking cylinder 5 and the marking head 4 to avoid the long-time contact with the marking head 4 of the marking cylinder 5, which leads to the temperature rise of the marking cylinder 5 and the burning damage of the sealing element in the marking cylinder 5.

Referring to fig. 1, the ribbon transport mechanism 3 includes a ribbon guide assembly 31 mounted on the mounting plate 2 and located directly below the dotting header 4, a ribbon unwinding assembly 32 located above one end of the ribbon guide assembly 31, and a ribbon winding assembly 33 located at the other end of the ribbon guide assembly 31. The ribbon guide assembly 31 includes four guide rollers 311 rotatably connected to the mounting plate 2, the connecting lines of the four guide rollers 311 are in an isosceles inverted trapezoid shape, the lower bottom edge of the isosceles inverted trapezoid shape is perpendicular to the dotting header 4, and the thermoprinting head 42 is located between the two guide rollers 311 in the middle. Referring to fig. 4, the guide roller 311 is provided with an annular positioning groove 312 into which the ink ribbon is fitted to prevent the ink ribbon from sliding in the axial direction of the guide roller 311.

Referring to fig. 1 and 4, the ribbon unwind assembly 32 includes an unwind wheel 322 rotatably coupled to the mounting plate 2 by a rotary damper 321. The ribbon winding assembly 33 includes a winding motor 331 fixedly connected to the mounting plate 2 at a side opposite to the dotting head 4, and a winding wheel 332 is fixedly connected to an output shaft of the winding motor 331. In use, the ribbon roll is mounted on the unwinding wheel 322, the free end of the ribbon roll is wound around the four guide rollers 311 from below the four guide rollers 311 and is embedded into the corresponding annular positioning groove 312, and then the ribbon roll is wound and fixed on the winding wheel 332. When the winding motor 331 drives the winding wheel 332 to rotate, the ribbon can be continuously wound on the winding wheel 332 and continuously discharged from the unwinding wheel 322; the unreeling wheel 322 is rotationally connected to the mounting plate 2 through the rotary damper 321, so that the phenomenon that when the reeling wheel 332 stops reeling the color tape, the unreeling wheel 322 further rotates due to inertia to cause the color tape to be folded at a point to be printed on the side surface of the tire, and a complete mark cannot be printed on the tire can be avoided.

Referring to fig. 1, the marking tilt angle adjusting mechanism 9 includes an automatic telescopic member 91 and two guide rails 92, two sliding sleeves 93 are fixedly connected to one side of the connecting frame 1 facing the fixing plate 7, the two guide rails 92 respectively penetrate through the two sliding sleeves 93 along the vertical direction and are in sliding fit with the sliding sleeves 93, and the lower ends of the guide rails 92 are fixedly connected with the fixing plate 7. A connecting plate 94 is fixedly connected to the upper ends of the two guide rails 92, one end of the automatic telescopic assembly is hinged to the connecting plate 94, and the other end of the automatic telescopic assembly is hinged to one end of the mounting plate 2 far away from the pivot 21. When the automatic telescopic member 91 extends, the mounting plate 2 is driven to rotate downwards around the pivot 21; when the automatic retraction member 91 is retracted, the mounting plate 2 is driven to rotate upward about the pivot 21. Thus, the person can adjust the inclination angle of the dotting head 4 by controlling the extension or contraction of the automatic telescopic member 91.

Referring to fig. 1, the automatic telescopic member 91 is a trapezoidal screw rod type electric push rod driven by a servo motor, and the trapezoidal screw rod type electric push rod has strong impact resistance, so that after people adjust the inclination angle of the dotting mark head 4, the inclination angle of the dotting mark head 4 is not easy to change under the action of external force. And the servo motor drives the trapezoidal screw rod type electric push rod, so that the marking inclination angle adjusting mechanism 9 has high adjusting precision, fast response and easy control and use.

Further, referring to fig. 3, a limiting post 95 is fixedly connected to one side of the mounting plate 2 facing the fixing plate 7, an arc-shaped limiting hole 96 is formed in the fixing plate 7 by taking a connection point of the pivot 21 and the fixing plate 7 as a circle center, and the limiting post 95 is inserted into the arc-shaped limiting hole 96. The angle of rotation of the mounting plate 2 about the pivot 21 relative to the fixed plate 7 can be limited by the engagement of the arcuate limiting hole 96 with the pivot 21.

Referring to fig. 1, the lifting mechanism 8 includes a brake cylinder 81 and a travel switch 82, the brake cylinder 81 is fixed to the connecting frame 1 along the vertical direction, and a piston rod of the brake cylinder 81 is fixed to the fixing plate 7; the travel switch 82 is mounted to the bottom of the mounting plate 2.

The fixed plate 7, the mounting plate 2, the marking inclination angle adjusting mechanism 9, the ribbon conveying mechanism 3, the marking head 4, the marking cylinder 5 and the heating mechanism 6 can be driven to synchronously ascend and descend by controlling the extension and the contraction of the brake cylinder 81; when the brake cylinder 81 extends to drive the fixing plate 7, the mounting plate 2, the marking inclination angle adjusting mechanism 9, the ink ribbon transmission mechanism 3, the marking head 4, the marking cylinder 5 and the heating mechanism 6 to synchronously move downwards, and when an ink ribbon arranged on the ink ribbon transmission mechanism 3 is abutted against the side surface of a tire, the travel switch 82 is triggered to enable the brake cylinder 81 to stop extending; when the travel switch 82 is triggered, the piston rod of the brake cylinder 81 is immediately held tight due to the structure of the brake cylinder, so that the piston rod is prevented from further extending out of the cylinder body due to inertia, and the precision of the lifting mechanism 8 is improved.

During the use, beat the mark device and install on tire dynamic balance testing machine or tire uniformity testing machine through link 1. When a batch of tires with the same specification are subjected to dynamic balance test or uniformity test, the marking device needs to be debugged first, so that the marking head 4 can be perpendicular to the tire side surface to-be-marked part during marking work. During the debugging, can arrange the tire in and beat the mark device below, then move down through elevating gear drive fixed plate 7, trigger until travel switch 82, at this moment typewriter ribbon and tire side wall butt, then can adjust the inclination of marking the head 4 through the extension or the shortening of the automatic extensible member 91 of control to make mark 4 of marking a perpendicular to tire side of the tyre face position department of waiting to mark.

When marking the work, heating device heats marking head 4, moves down through elevating gear drive fixed plate 7 until travel switch 82 triggers, at this moment typewriter ribbon and tire side wall butt, then starts to mark cylinder 5, makes the piston rod striking of marking cylinder 5 mark head 4 of marking, thereby the dyestuff rendition on the typewriter ribbon to tire side face.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A marking device for a tire dynamic balance and uniformity testing machine comprises a mounting plate (2), a color tape transmission mechanism (3), a dotting header (4), a marking cylinder (5) and a heating mechanism (6), wherein the color tape transmission mechanism (3), the dotting header (4), the marking cylinder and the heating mechanism are mounted on one side of the mounting plate (2), the heating mechanism is wrapped outside the dotting header (4) and used for heating the dotting header (4), and the dotting header (4) is located above the color tape transmission mechanism (3); the marking cylinder (5) drives the marking head (4) to impact the side surface of the tire; the method is characterized in that: a fixing plate (7) parallel to the mounting plate (2) is arranged on one side of the mounting plate (2) back to the color band transmission mechanism (3), and one end of the mounting plate (2) is hinged with the fixing plate (7) through a pivot (21);

the marking device further comprises a connecting frame (1), a lifting mechanism (8) which is arranged on the connecting frame (1) and drives the fixing plate (7) to move along the vertical direction, and a marking inclination angle adjusting mechanism (9) which drives the mounting plate (2) to rotate around a pivot (21).

2. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 1, wherein: beat mark inclination adjustment mechanism (9) and include automatic extensible member (91) and slide guide rail (92) of connection on link (1), guide rail (92) are in slide along vertical direction on link (1), guide rail (92) lower extreme and fixed plate (7) rigid coupling, automatic extensible member (91) one end is articulated with guide rail (92) upper end, and the other end is articulated with the one end that pivot (21) were kept away from in mounting panel (2).

3. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 2, wherein: mounting panel (2) have one spacing post (95) towards one side rigid coupling of fixed plate (7), use pivot (21) and the tie point of fixed plate (7) to offer a spacing hole of arc (96) as the centre of a circle on fixed plate (7), spacing post (95) insert in spacing hole of arc (96).

4. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 2, wherein: the automatic telescopic piece (91) is a trapezoidal screw rod type electric push rod driven by a servo motor.

5. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 1, wherein: the lifting mechanism (8) comprises a brake cylinder (81) and a travel switch (82), the brake cylinder (81) is arranged along the vertical direction, a cylinder body of the brake cylinder (81) is fixedly connected with the connecting frame (1), and a piston rod of the brake cylinder (81) is fixedly connected with the fixing plate (7); the travel switch (82) is installed at the bottom of the installation plate (2).

6. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 1, wherein: the color band transmission mechanism (3) comprises a color band guide component (31) which is arranged on the mounting plate (2) and is positioned right below the dotting header (4), a color band unwinding component (32) which is positioned above one end of the color band guide component (31), and a color band winding component (33) which is positioned at the other end of the color band guide component (31); the color band guide assembly (31) is provided with a space for the dotting header (4) to pass through; the ribbon unwinding assembly (32) comprises an unwinding wheel (322) which is rotationally connected to the mounting plate (2) through a rotary damper (321); the ribbon winding assembly (33) comprises a winding wheel (332) in rotating fit with the mounting plate (2) and a winding motor (331) for driving the winding wheel (332) to rotate.

7. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 6, wherein: the ribbon guide component (31) comprises four guide rollers (311) rotatably connected with the mounting plate (2), the connecting lines of the four guide rollers (311) are in an inverted trapezoid shape, and the lower bottom edge of the inverted trapezoid shape is perpendicular to the dotting header (4).

8. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 1, wherein: the heating mechanism (6) comprises a fixed heat-conducting block (61) fixed on the mounting plate (2) and an electric heating rod (62) arranged in the fixed heat-conducting block (61) in a penetrating manner; the dotting header (4) penetrates through the fixed heat-conducting block (61) and is in sliding fit with the fixed heat-conducting block (61).

9. The marking device for the tire dynamic balance and uniformity testing machine as claimed in claim 8, wherein: the dotting head (4) comprises a sliding rod (41) arranged on a fixed heat conducting block (61) in a penetrating mode, a hot printing head (42) connected to the lower end of the sliding rod (41) in a threaded mode and an anti-falling head (43) fixedly connected to the upper end of the sliding rod (41), a spring (44) is sleeved on the sliding rod (41), one end of the spring (44) is abutted to the fixed heat conducting block (61), and the other end of the spring is abutted to the anti-falling head (43).