A tire scribe mechanism

Abstract

This utility model discloses a tire marking mechanism, relating to the field of tire manufacturing technology. It includes multiple marking units mounted on a support. Each marking unit comprises a rocker arm, a shaft, a bushing, a pressure roller, a marking wheel, and a locking component. One end of the rocker arm is elastically rotatably connected to the support, and the other end is rotatably connected to a shaft arranged along the tire's axial direction. The bushing is slidably connected coaxially with the shaft. The pressure roller and the marking wheel are both coaxially fixedly connected to the bushing. The locking component locks the bushing at any position on the shaft and can be unlocked. Each marking unit, through rocker arms of different lengths, allows the pressure roller and the marking wheel to sequentially contact the tire circumferentially. This utility model can mark multiple lines in each tire rotation cycle, enabling the marking wheels to evenly mark lines on the tire surface and facilitating the adjustment of the arrangement order of different types of marking wheels along the tire's axial direction, thus flexibly adjusting the marking combination.

Description

Technical Field

[0001] This utility model relates to the field of tire manufacturing technology, specifically a tire marking mechanism. Background Technology

[0002] In tire manufacturing, marking is a key means of achieving standardized control and efficient production. On one hand, its core purpose is to accurately mark specifications. By marking corresponding lines and symbols on the tire sidewall or tread, core information such as the tire's diameter, aspect ratio, load rating, and speed rating is clearly defined, ensuring that the production parameters of each tire are consistent with design standards and avoiding production errors caused by specification confusion. For example, when producing tires of different diameters (13-22 inches) on mixed production lines, marking can quickly distinguish between models, preventing incorrect installation and inspection, and reducing rework rates.

[0003] Patent CN222807062U discloses a tire tread marking line marking device, including a base, a support frame fixedly connected to the horizontal part of the base, a hanger fixedly connected to the horizontal part of the support frame, a pen holder slidably connected to the horizontal part of the hanger, a paint pen provided on the inner side wall of the pen holder, a positioning pressure roller assembly provided on the horizontal part of the hanger and to the right of the pen holder, and the outer side of the double-row rotating pressure rollers contacting the tire. An adjustment mechanism is shared on the pen holder and the hanger. Through the action of the pen holder and the paint pen, marking lines can be marked on the tire tread, resulting in straight and consistent markings.

[0004] In existing technologies such as the aforementioned patent, lines are drawn on the tire by using a paint pen in conjunction with a positioning wheel. The drawback is that only a single line can be drawn per rotation cycle of the tire. Even if the number of paint pens is increased, the arrangement order of different paint pens cannot be adjusted without disassembling the paint pens, and the combination of lines cannot be flexibly adjusted. Utility Model Content

[0005] The purpose of this invention is to provide a tire marking mechanism to solve the problem in the prior art that a tire can only mark a single line per rotation cycle.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tire marking mechanism, comprising multiple marking units mounted on a support, each marking unit comprising a rocker arm, a shaft, a bushing, a pressure roller, a marking wheel, and a locking component. One end of the rocker arm is elastically rotatably connected to the support, and the other end is rotatably connected to a shaft arranged along the tire axial direction. The bushing is slidably connected coaxially with the shaft along the axial direction. The pressure roller and the marking wheel are both fixedly connected coaxially with the bushing. The locking component is used to lock the bushing at any position on the shaft and can be unlocked. Each marking unit, through rocker arms of different lengths, enables each pressure roller and marking wheel to sequentially conform to the tire in the tire circumferential direction.

[0007] Furthermore, the marking wheel includes a disc connected to a bushing and a marking soft wheel fixedly sleeved on the disc. The diameter of the pressure wheel is smaller than the diameter of the marking soft wheel but larger than the diameter of the disc.

[0008] Furthermore, a pigment box is rotatably mounted on the bushing, and the bottom of the marking wheel is immersed in the pigment inside the pigment box.

[0009] Furthermore, the bushing has two pressure rollers of the same diameter, with the scribing roller positioned between the two pressure rollers.

[0010] Furthermore, the locking element includes a screw, and the bushing has a threaded hole that radially penetrates the bushing, with the screw threadedly connected to the threaded hole.

[0011] Furthermore, the outer end of the screw is fixedly provided with a nut, knob, or non-cylindrical countersunk hole.

[0012] Furthermore, a connecting shaft is fixedly connected to the bracket, and each of the swing arms is rotatably connected to the connecting shaft to achieve a rotatable connection with the bracket.

[0013] Furthermore, each marking unit also includes a torsion spring movably sleeved on the connecting shaft, with one end of the torsion spring fixedly connected to the connecting shaft and the other end fixedly connected to the corresponding rocker arm.

[0014] Furthermore, the bracket is provided with a limiting plate, which is located on the rotation path of the swing arm to limit the swing arm from excessive rotation due to the elastic force of the torsion spring.

[0015] Furthermore, the bracket is connected to a crossbeam by bolts or welding, and the crossbeam is used for fixed connection with the frame of the production line.

[0016] Compared with the prior art, the tire marking mechanism provided by this utility model firstly, by arranging multiple marking units on a bracket, multiple lines can be marked in each rotation cycle of the tire; secondly, the flexible rotating rocker arm enables the pressure roller and marking roller to automatically press against the tire tread. On the one hand, the pressure roller abuts against the tire tread, keeping the pressure between the marking roller and the tire tread constant; on the other hand, the pressure roller rotates under the drive of the rotating tire, driving the marking roller to rotate, thereby enabling the marking roller to mark lines evenly on the tire tread; furthermore, since the marking roller can move and lock along the axis of the shaft, and the rocker arm lengths of each marking unit are different, each pressure roller and marking roller can sequentially contact the tire in the circumferential direction, thus allowing for easy adjustment of the arrangement order of different types of marking rollers in the tire axial direction, and enabling flexible adjustment of the marking combination. Attached Figure Description

[0017] To provide a clearer description of the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0018] Figure 1 The provided embodiment is a structural diagram of tire marking.

[0019] Figure 2 The provided embodiment shows a bottom view of the structure when marking tire lines.

[0020] Figure 3 The provided embodiment shows a front view of the structure when tire marking is performed.

[0021] Figure 4 for Figure 3 Enlarged view of the structure at point A in the image;

[0022] Figure 5 A top view of the overall structure provided for the embodiment;

[0023] Figure 6 A schematic diagram of the overall structure provided for the embodiment;

[0024] Figure 7 A schematic diagram of the structure of the scribing unit provided in the embodiment;

[0025] Figure 8 This is a schematic diagram of the marking wheel provided in the embodiment.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Bracket; 11. Limiting plate; 2. Marking unit; 21. Swing rod; 22. Torsion spring; 23. Shaft; 24. Bushing; 25. Pressure roller; 26. Marking wheel; 261. Wheel disc; 262. Marking soft wheel; 27. Paint box; 28. Locking component; 3. Connecting shaft; 4. Crossbeam. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Please see Figures 1-8 The present invention provides a tire marking mechanism, including a bracket 1 and a plurality of marking units 2 disposed on the bracket 1. The bracket 1 is connected to or welded to a crossarm 4 by bolts. The crossarm 4 is used to fix the tire marking mechanism to the frame of the production line so that the entire tire marking mechanism remains stable.

[0030] The following description uses one of the marking units, 2, as an example. The marking unit 2 includes a rocker arm 21, a torsion spring 22, a shaft 23, a bushing 24, a pressure roller 25, a marking wheel 26, and a locking element 28. A connecting shaft 3 parallel to the tire axis is fixedly connected to the bracket 1. One end of the rocker arm 21 is rotatably connected to the connecting shaft 3, and the other end is rotatably connected to the shaft 23 arranged along the tire axis. The torsion spring 22 is movably sleeved on the connecting shaft 3, and one end of the torsion spring 22 is fixedly connected to the connecting shaft 3, and the other end is fixedly connected to the corresponding rocker arm 21. Therefore, when the rocker arm 21 rotates away from the tire, the torsion spring 22 will undergo elastic deformation and store energy. The elastic force of the torsion spring 22 causes the pressure roller 25 and the marking wheel 26 on the shaft 23 at the end of the rocker arm 21 to press against the tire surface. The bracket 1 is provided with a limiting plate 11, which is located on the rotation path of the swing arm 21. When the tire is removed, the limiting plate 11 is used to limit the swing arm 21 from rotating excessively due to the elastic force of the torsion spring 22.

[0031] The bushing 24 is slidably connected to the shaft 23 along the axial direction. The bushing 24 and the shaft 23 always remain coaxial, and the bushing 24 and the shaft 23 cannot rotate relative to each other through the key and keyway fit. The bushing 24 can only slide along the shaft 23. The pressure roller 25 and the scribing roller 26 are both coaxially and fixedly connected to the bushing 24. The scribing roller 26 includes a wheel 261 connected to the bushing 24 and a scribing soft roller 262 fixedly sleeved on the wheel 261. The diameter of the pressure roller 25 is smaller than the diameter of the scribing soft roller 262 but larger than the diameter of the wheel 261. The bushing 24 has at least one pressure roller 25. In a preferred embodiment, the bushing 24 has two pressure rollers 25 with the same diameter, and the scribing roller 26 is located between the two pressure rollers 25. In this way, when scribing lines on the edge of the tire tread, regardless of which edge of the tire it is, at least one pressure roller 25 can be guaranteed to roll in contact with the tire tread. The bushing 24 also has a rotating hanging sleeve for the paint box 27. The bottom of the marking wheel 26 is immersed in the paint in the paint box 27. The paint box 27 can always hang down under the action of gravity. The paint in the paint box 27 is replenished periodically or injected in real time through an external pipe.

[0032] The locking element 28 is used to lock the bushing 24 to any position on the shaft 23 and can be unlocked. The locking element 28 is preferably a screw, and the bushing 24 has a threaded hole that radially penetrates the inside and outside of the bushing 24. The screw is threadedly connected to the threaded hole. The inner end of the screw can abut against the surface of the shaft 23, and the outer end of the screw is fixedly provided with a nut, knob or non-cylindrical countersunk hole to rotate the screw.

[0033] Except for the different lengths of the swing rods 21, the structures of each marking unit 2 are identical. Each marking unit 2 uses swing rods 21 of different lengths to ensure that each pressure roller 25 and marking roller 26 can sequentially contact the tire in the circumferential direction of the tire.

[0034] In the above technical solution, firstly, by arranging multiple marking units 2 on the bracket 1, multiple lines can be marked in each rotation cycle of the tire; secondly, the elastically rotating rocker arm 21 enables the pressure roller 25 and the marking roller 26 to automatically press against the tire tread. On the one hand, the pressure roller 25 abuts against the tire tread, keeping the pressure between the marking roller 26 and the tire tread constant; on the other hand, the pressure roller 25 rotates under the drive of the rotating tire, causing the marking roller 26 to rotate, thereby enabling the marking roller 26 to mark lines evenly on the tire tread; and furthermore, Since the marking wheel 26 can move and lock along the axial direction of the shaft 23, and the swing arm 21 of each marking unit 2 has a different length, each pressure wheel 25 and marking wheel 26 can sequentially contact the tire in the circumferential direction of the tire. This allows for easy adjustment of the arrangement order of different types of marking wheels 26 in the axial direction of the tire, thus enabling flexible adjustment of the marking combination. In addition, the marking wheel 26 and the paint box 27 are designed to replenish the paint on the marking wheel 26 in real time, making the paint on the marking wheel 26 more uniform and sufficient, resulting in a better marking effect.

[0035] It should be noted that the tire is mounted on a tire cage, and the tire can rotate with the tire cage under the drive of the drive motor. This is existing technology and will not be elaborated further.

[0036] The foregoing description of certain exemplary embodiments of this utility model should not be construed as limiting the scope of protection of the claims of this utility model. Those skilled in the art will recognize that the described embodiments can be modified in other ways without departing from the spirit and scope of this utility model.

Claims

1. A tire marking mechanism, comprising a plurality of marking units mounted on a bracket, characterized in that: Each marking unit includes a rocker arm, a shaft, a bushing, a pressure roller, a marking wheel, and a locking component. One end of the rocker arm is elastically rotatably connected to the bracket, and the other end is rotatably connected to the shaft arranged along the tire axis. The bushing is slidably connected to the shaft along the axis. The pressure roller and the marking wheel are both fixedly connected to the bushing coaxially. The locking component is used to lock the bushing at any position on the shaft and can be unlocked. Each of the marking units uses swing arms of different lengths to ensure that each pressure roller and marking roller can sequentially contact the tire in the circumferential direction of the tire.

2. The tire marking mechanism according to claim 1, characterized in that, The marking wheel includes a disc connected to a bushing and a marking soft wheel fixedly mounted on the disc. The diameter of the pressure wheel is smaller than the diameter of the marking soft wheel but larger than the diameter of the disc.

3. The tire marking mechanism according to claim 1, characterized in that, The paint box is rotatably mounted on the bushing, and the bottom of the marking wheel is immersed in the paint inside the paint box.

4. The tire marking mechanism according to claim 1, characterized in that, The bushing has two pressure rollers of the same diameter, with the scribing roller located between the two pressure rollers.

5. The tire marking mechanism according to claim 1, characterized in that, The locking component includes a screw, and a threaded hole that radially penetrates the bushing is provided on the bushing. The screw is threadedly connected to the threaded hole.

6. The tire marking mechanism according to claim 5, characterized in that, The outer end of the screw is fixedly provided with a nut, knob or non-cylindrical countersunk hole.

7. The tire marking mechanism according to claim 1, characterized in that, A connecting shaft is fixedly connected to the bracket, and each of the swing arms is rotatably connected to the connecting shaft to achieve a rotatable connection with the bracket.

8. The tire marking mechanism according to claim 7, characterized in that, Each marking unit also includes a torsion spring movably sleeved on the connecting shaft, with one end of the torsion spring fixedly connected to the connecting shaft and the other end fixedly connected to the corresponding swing rod.

9. The tire marking mechanism according to claim 8, characterized in that, The bracket is equipped with a limiting plate, which is located on the rotation path of the swing arm to limit the swing arm from excessive rotation due to the elastic force of the torsion spring.

10. The tire marking mechanism according to claim 1, characterized in that, The bracket is connected to a crossbeam by bolts or welding, and the crossbeam is used to fix it to the frame of the production line.

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