Tire calendering mechanism

Abstract

The invention discloses a tire calendaring mechanism, and relates to the technical field of tire calendaring, the tire calendaring mechanism comprises a rack, two calendaring roller sets, a tensioning assembly, a tensioning degree regulation and control assembly and a bending degree regulation and control assembly, the tensioning assembly comprises a sliding block arranged in a sliding mode and a tensioning roller rotationally connected to the sliding block, the tensioning degree adjusting and controlling assembly comprises a linear driving source and a pressure sensor fixedly connected to the power output end of the linear driving source, the pressed end of the pressure sensor is fixedly connected with the sliding block, and the linear driving source drives the tensioning assembly to slide according to the change of the pressure borne by the pressure sensor so as to tension or loosen the rubber belt. The rubber belt is restored to the standard tension degree; and the bending degree regulating and controlling assembly is arranged between the two calendering roller sets and is driven by the displacement of the power output end to regulate the speed ratio of the two calendering roller sets, so that the rubber belt is restored to the standard bending degree. The rubber belt calendering stability of the tire calendering mechanism is improved, and the calendered and output rubber belt is uniform in thickness and stable in quality.

Description

Technical Field

[0001] The present invention relates to the technical field of tire calendering, in particular to a tire calendering mechanism. Background Art

[0002] Tire calendering is a key process in tire manufacturing, primarily used for rubber coating and lamination of components such as the tire cord, tread, and sidewall. The traditional calendering process involves compound mixing, preheating, calendering, and cooling. The core equipment is the calender. In rubber calendering, multi-stage tandem calendering, such as three-roll and four-roll calenders, is typically used to achieve uniform thickness control and surface quality.

[0003] Prior art, such as a cord calendering device for tire production published with publication number CN119036731A, can perform adaptive calendering operations on both sides and the center segment of the cord during tire production by setting up a first calendering frame, a second calendering frame, a limiting side frame, a limiting bottom frame and a calendering rubber pad. In actual use, the staff first places the tire cord to be calendered into the interior of the second calendering frame, then passes it into the interior of the first calendering frame, and finally passes it out for collection operation. At this time, the structures of the first calendering frame and the second calendering frame are the same.

[0004] Another example is a tire inner liner calendering device disclosed with announcement number CN222406812U. First, according to the thickness of the tire inner liner, the two lifting screws are rotated by an adjusting motor. Because the threads of the two screws are opposite, the adjustment kit located on the right can be moved in opposite directions. The adjustment slider is driven up and down by the adjustment kit, and the adjustment slider slides in the adjustment groove. The adjustment slider drives the mounting plate to rise and fall to adjust the distance between the upper and lower sets of calendering rollers. It can be used for calendering inner liners of different thicknesses.

[0005] In the existing technologies mentioned above, it is possible to more efficiently complete the cord calendering operation for tire production and meet the arc requirements of the edges of the subsequent tire cord. However, in the multi-stage calendering process, the rubber belt in the intermediate state is easily affected by fluctuations in the input amount, such as uneven feeding speed, temperature gradient changes or mechanical transmission errors, resulting in an imbalance in the consumption rate: if the rubber consumption of a certain level of calendering mechanism is too fast, it will cause insufficient feeding in the subsequent process, resulting in a sudden change in tensile stress; if the consumption is too slow, it will cause the rubber belt to accumulate in the roller gap, commonly known as "rubber piling", resulting in wrinkles or local vulcanization precursor phenomena. The above imbalance will destroy the dynamic balance of the calendering system, and ultimately affect the thickness consistency and physical properties of the output rubber belt. Summary of the Invention

[0006] The purpose of the present invention is to provide a tire calendering mechanism to solve the problem in the prior art that an imbalance in feeding speed will destroy the dynamic balance of the calendering system, ultimately affecting the thickness consistency and physical properties of the output rubber belt.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tire calendering mechanism, comprising a frame and two calendering roller groups arranged on the frame for sequentially calendering a rubber belt, and also comprising: a tensioning assembly, which comprises a slider slidably connected to the frame and a tensioning roller rotatably connected to the slider; a tensioning degree regulating assembly, which comprises a linear drive source and a pressure sensor fixedly connected to the power output end of the linear drive source, the pressure-bearing end of the pressure sensor being fixedly connected to the slider, and the linear drive source drives the tensioning assembly to slide according to the pressure change on the pressure sensor to tighten or loosen the rubber belt between the two calendering roller groups, so that the rubber belt is restored to a standard tension; a curvature regulating assembly, whose transmission is arranged between the two calendering roller groups, and adjusts the speed ratio of the two calendering roller groups driven by the displacement of the power output end, so that the rubber belt is restored to a standard curvature.

[0008] Furthermore, each calendering roller group includes a power roller and a driven roller that cooperate with each other, and the curvature control component is used to adjust the speed ratio between the power rollers of the two calendering roller groups.

[0009] Furthermore, the curvature control component includes a transmission wheel and two conical wheels with consistent structures, parallel axes and opposite conical ends. The two conical wheels are each connected to a power roller for transmission. The transmission wheel simultaneously transmits and abuts the two conical wheels. The linear drive source can drive the transmission wheel to move axially.

[0010] Furthermore, the shaft of the transmission wheel is fixedly connected to the power output end of the linear drive source via a connecting rod.

[0011] Furthermore, a driving motor is installed on the frame, and the driving motor is connected to a power roller close to the output end of the rubber belt through a transmission.

[0012] Furthermore, the power rollers of the two calendering roller groups are both rotatably connected to the frame, the driven roller close to the output end of the rubber belt is vertically slidably connected to the frame through a first movable rod, and the other driven roller is horizontally slidably connected to the frame through a second movable rod, and the distance between the two driven rollers and the corresponding power rollers is adjusted by sliding the first movable rod and the second movable rod on the frame.

[0013] Furthermore, the frame is provided with a guide rod inclined at 45° to the horizontal plane, and a sliding column is slidably installed on the guide rod. The sliding column is slidably connected to the first movable rod and the second movable rod at the same time. A pitch-adjusting screw is threadedly installed on the guide rod along the length direction, and the end of the pitch-adjusting screw is rotatably connected to the sliding column.

[0014] Furthermore, the pressure sensor is a piezoresistive pressure sensor or a ceramic pressure sensor.

[0015] Furthermore, the linear drive source is an electric push rod or a linear motor.

[0016] Furthermore, the linear drive source and the pressure sensor are both communicatively connected to a controller.

[0017] In the above technical solution, the present invention provides a tire calendering mechanism. When the buffer amount of the rubber belt between the two groups of calendering rollers increases or decreases, the pressure applied by the rubber belt to the tensioning roller decreases or increases, the pressure sensor signal changes, and the electric push rod is fed back and controlled to extend or shorten, thereby compensating for the unstable input amount that may cause the rubber to be consumed too quickly or too slowly, avoiding the tensile deformation of the rubber belt caused by too fast consumption or the wrinkles caused by the rubber piling caused by too slow consumption. Synchronously, the curvature control component is linked to the tensioning component in real time to adjust the speed of the power roller near the input end of the rubber belt, compensate for the instability of the input amount, and restore the rubber belt to the accumulation amount in a stable state, further enhancing the stability of the rubber belt calendered by the tire calendering mechanism, so that the output rubber belt has uniform thickness, no wrinkles, and stable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction to the drawings required for use in the embodiments will be given below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 The enlarged schematic diagram at point A in the middle; Figure 3 A schematic structural diagram of another perspective of the present invention; Figure 4 For the present invention Figure 3 The enlarged schematic diagram at point B in the middle; Figure 5 Schematic diagram of the pitch-adjustable screw of the present invention; Figure 6 is a schematic diagram of a driving member of the present invention; Figure 7 This is a schematic structural diagram of the driven roller adjustment of the present invention; Figure 8 Schematic diagram of the tension control component of the present invention.

[0020] Description of reference numerals: 1. Frame; 11. Driving motor; 12. Transmission; 2. Calendering roller group; 21. Power roller; 22. Driven roller; 3. Tensioning assembly; 31. Tensioning roller; 32. Slider; 4. Tensioning degree control assembly; 41. Electric push rod; 42. Pressure sensor; 5. Curvature control assembly; 51. First conical wheel; 52. Second conical wheel; 53. Shaft; 54. Transmission wheel; 55. First bevel gear; 56. Second bevel gear; 57. Transmission assembly; 58. Third bevel gear; 59. Fourth bevel gear; 6. Connecting rod; 7. First movable rod; 71. Second movable rod; 8. Driving part; 81. Guide rod; 82. Sliding column; 83. Pitch-adjusting screw; 84. Hydraulic cylinder. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] See also Figures 1-8 An embodiment of the present invention provides a tire calendering mechanism, comprising a frame 1, two calendering roller groups 2, a tensioning assembly 3, a tensioning control assembly 4, and a curvature control assembly 5. The two calendering roller groups 2 are both mounted on the frame 1, and are staggered in the vertical and horizontal directions. The two calendering roller groups 2 are used to calender the rubber belt in sequence. The tensioning assembly 3 comprises a slider 32 and a tensioning roller 31. The slider 32 is slidably connected to the frame 1, and the tensioning roller 31 is rotatably connected to the slider 32. The tensioning roller 31 rolls against the rubber belt between the two calendering roller groups 2, applying a certain tensioning force to the rubber belt, thereby bending the rubber belt to form an arc. The corresponding tension of the rubber belt between the two calendering roller groups 2 during normal and stable calendering is a standard tension, and the corresponding curvature is a standard curvature. Both the standard tension and the standard curvature are preset values.

[0023] The tension control assembly 4 is used to adjust the tension of the rubber belt between the two calendering roller groups 2 to the target tension. It includes a linear drive source and a pressure sensor 42, both of which are communicatively connected to a controller. The linear drive source is mounted on the frame 1, and the pressure sensor 42 is fixedly connected to the power output end of the linear drive source. The pressure-receiving end of the pressure sensor 42 is fixedly connected to the slider 32. When the rubber belt between the two calendering roller groups 2 is at a standard tension, the pressure value applied to the pressure sensor 42 is the standard pressure value. The pressure sensor 42 is a piezoresistive pressure sensor or a ceramic pressure sensor, and the linear drive source is a component capable of outputting linear power, such as an electric push rod 41 or a linear motor.

[0024] When the buffer volume of the rubber belt between the two groups of calendering roller groups 2 increases, the pressure of the rubber belt acting on the pressure sensor 42 will decrease accordingly. The linear drive source drives the tensioning component 3 to slide closer to the rubber belt according to the change that the pressure received by the pressure sensor 42 is lower than the standard pressure value to further tension the rubber belt, until the pressure value received by the pressure sensor 42 returns to the standard pressure value, the rubber belt also returns to the standard tension; when the buffer volume of the rubber belt between the two groups of calendering roller groups 2 decreases, the pressure of the rubber belt acting on the pressure sensor 42 will increase accordingly. The linear drive source drives the tensioning component 3 to slide away from the rubber belt according to the change that the pressure received by the pressure sensor 42 is higher than the standard pressure value to loosen the rubber belt between the two calendering roller groups 2, until the pressure value received by the pressure sensor 42 returns to the standard pressure value, the rubber belt also returns to the standard tension.

[0025] Although the tension of the rubber belt between the two calendering roller sets 2 is adjusted and restored by the tension control assembly 4, the curvature of the rubber belt has changed. If this increase or decrease in curvature is not corrected, it will accumulate over time and cause the rubber belt to be excessively bent or stretched, exceeding the control range of the tension control assembly 4. Therefore, the curvature control assembly 5 is designed to correct the curvature of the rubber belt between the two calendering roller sets 2 to the target curvature.

[0026] The curvature regulating component 5 is transmission-set between the two calendering roller groups 2. Specifically, the speed ratio of the two calendering roller groups 2 is adjusted under the drive of the displacement of the power output end to restore the rubber belt to the standard curvature. When the curvature of the rubber belt between the two calendering roller groups 2 increases, the curvature regulating component 5 reduces the rotation speed of the calendering roller group 2 at the input end of the rubber belt, thereby slowing down the amount of glue passed by the calendering roller group 2 at the input end, and the curvature of the rubber belt between the two calendering roller groups 2 gradually decreases to the standard curvature. At this time, the curvature regulating component 5 is restored and no longer reduces the rotation speed of the calendering roller group 2 at the input end, and the rotation speeds of the two calendering roller groups 2 are synchronized; when the curvature of the rubber belt between the two calendering roller groups 2 decreases, the curvature regulating component 5 increases the rotation speed of the calendering roller group 2 at the input end of the rubber belt, thereby increasing the amount of glue passed by the calendering roller group 2 at the input end, and the curvature of the rubber belt between the two calendering roller groups 2 gradually increases to the standard curvature. At this time, the curvature regulating component 5 is restored and no longer increases the rotation speed of the calendering roller group 2 at the input end, and the rotation speeds of the two calendering roller groups 2 are synchronized.

[0027] As a more specific technical solution, each calendering roller set 2 includes a power roller 21 and a driven roller 22. The power roller 21 and the driven roller 22 are parallel to each other and cooperate with each other. The rubber belt is calendered through the gap between the corresponding power roller 21 and the driven roller 22. The power rollers 21 of the two calendering roller sets 2 are both rotatably connected to the frame 1. The frame 1 is equipped with a drive motor 11. The drive motor 11 is connected to the power roller 21 near the output end of the rubber belt through a transmission 12. That is, the motor drives the power roller 21 at the output end to rotate, and the power rollers 21 of the two calendering roller sets 2 are connected to each other through a transmission.

[0028] With respect to the driven rollers 22 of the two calendering roller groups 2, the driven roller 22 near the output end of the rubber belt is rotatably connected to a horizontal first movable rod 7, which is vertically slidably mounted on the frame 1. The other driven roller 22 is rotatably mounted on a vertical second movable rod 71, which is horizontally slidably mounted on the frame 1. The frame 1 is also provided with a driving member 8, which includes a guide rod 81 having a guide groove formed on the guide rod 81 at an angle of 45° to the horizontal plane. A slide post 82 is slidably connected within the guide groove. Slide grooves are formed on the first movable rod 7 and the second movable rod 71, and the slide post 82 slides simultaneously through the slide grooves on the first movable rod 7 and the second movable rod 71. By driving the sliding column 82 to slide along the guide groove, the two driven rollers 22 can be driven synchronously to move closer to or away from the corresponding power rollers 21 through the first movable rod 7 and the second movable rod 71, thereby synchronously adjusting the distance between the power rollers 21 and the driven rollers 22 of the two groups of calendering roller groups 2, which can adapt to calendering rubber belts of different thicknesses.

[0029] For the drive of the slide 82, a pitch-adjusting screw 83 is threadedly installed on the guide rod 81 along the length direction. The length direction of the pitch-adjusting screw 83 is consistent with the length direction of the guide groove. The end of the pitch-adjusting screw 83 extends into the guide groove and is rotatably connected to the slide 82. By screwing the pitch-adjusting screw 83, the slide 82 can be driven to slide along the guide groove, and after stopping screwing the pitch-adjusting screw 83, the pitch-adjusting screw 83 and the guide rod 81 are self-locked by the thread, thereby locking the slide 82, and then fixing the distance between the power roller 21 and the driven roller 22 of the two sets of calendering roller groups 2.

[0030] In another embodiment, the pitch adjusting screw 83 can be replaced by a hydraulic cylinder 84 or an air cylinder. The base of the hydraulic cylinder 84 is fixedly mounted on the frame 1 or the guide rod 81. The open end of the piston rod of the hydraulic cylinder 84 is connected to the slide column 82. The piston rod can be extended and retracted to drive the slide column 82 to move along the guide groove, thereby adjusting the distance between the driven roller 22 and the corresponding power roller 21. The piston rod also has a self-locking function when it stops moving.

[0031] The curvature control component 5 is used to adjust the rotational speed of the power roller 21 at the input end of the rubber belt, thereby adjusting the speed ratio between the power rollers 21 of the two calendering roller groups 2. The curvature control component 5 includes a transmission wheel 54 and two conical wheels with the same structure, parallel axes and opposite tapered ends. The two conical wheels are respectively rotatably connected to the frame 1. The two conical wheels are each connected to a power roller 21 for transmission. The transmission wheel 54 simultaneously drives and abuts the two conical wheels, and the transmission wheel 54 can move axially. A stepless adjustment mechanism is formed between the two conical wheels and the transmission wheel 54. By moving the transmission wheel 54 axially, the transmission ratio between the two conical wheels can be changed, thereby changing the speed ratio between the two power rollers 21. The two power rollers 21 are respectively connected to the two conical wheels for transmission in a one-to-one correspondence. Therefore, adjusting the speed ratio between the two power rollers 21 actually requires adjusting the speed ratio between the two conical wheels. First, the two conical wheels can only rotate on their own axes. The axes of the two conical wheels are parallel, and the cone ends face opposite directions. Therefore, the closest generatrix between the two conical wheels is a parallel line. The transmission wheel 54 is located between these two "parallel lines." The axis of the transmission wheel 54 is parallel to these two "parallel lines" and is located directly in the middle of the two "parallel lines." The transmission wheel 54 simultaneously contacts the two conical wheels. The elastic deformation between the contacting surfaces due to pressure creates surface contact. Therefore, when the transmission wheel 54 moves along its axial direction, it will always maintain contact with the two conical wheels, thus being able to continuously transmit power between the two conical wheels. The axial movement of the transmission wheel 54 will change its contact position with the two conical wheels. Different "contact positions" correspond to different linear velocities of the conical wheels, thereby achieving the purpose of changing the speed ratio of the two conical wheels.

[0032] The logic and power of the axial movement of the transmission wheel 54 are provided by the linear drive source, that is, the linear drive source drives the transmission wheel 54 to move axially, and the transmission wheel 54 is rotatably connected to its shaft 53. It is best to add a sliding structure between the shaft 53 and the frame 1 to increase the stability of the axial displacement of the transmission wheel 54. The shaft 53 and the power output end of the linear drive source are fixedly connected by a connecting rod 6. Therefore, the power output end of the linear drive source will simultaneously drive the tensioning roller 31 and the transmission wheel 54 to move when moving.

[0033] When the rubber belt between the two calendering roller groups 2 is in a normal and stable calendering equilibrium state, the input and output of the rubber belt between the two calendering roller groups 2 are balanced, the rubber belt is in standard tension and standard curvature, the pressure value received by the pressure sensor 42 is the standard pressure value, the transmission wheel 54 transmits power 1:1 between the two conical wheels, the rotational speed of the two calendering roller groups 2 is consistent, and the calendering operation is carried out smoothly.

[0034] When the buffer volume of the rubber belt between the two calendering roller groups 2 increases, the pressure of the rubber belt acting on the pressure sensor 42 will decrease accordingly. On the one hand, the linear drive source drives the tensioning component 3 to slide close to the rubber belt through the power output end according to the change that the pressure on the pressure sensor 42 is lower than the standard pressure value to further tension the rubber belt. The pressure on the pressure sensor 42 increases and approaches the standard pressure value, and the rubber belt also approaches the standard tension. On the other hand, while the power output end of the linear drive source drives the tensioning component 3 to slide close to the rubber belt, the power output end of the linear drive source also synchronously drives the transmission wheel 54 to move axially through the connecting rod 6 and the shaft 53, so that the transmission ratio between the two conical wheels is reduced, thereby reducing the speed of the power roller 21 at the input end of the rubber belt. The speed difference between the two calendering roller groups 2 causes the "inventory" rubber belt between the two to be consumed faster, which makes the curvature of the rubber belt Decrease, approaching the standard curvature. As the "inventory" rubber belt is consumed, the pressure of the rubber belt on the tensioning roller 31 and the pressure sensor 42 rapidly increases to the standard pressure value, and the curvature of the rubber belt continues to decrease and approaches the standard tension. However, at this time, the transmission ratio of the transmission wheel 54 between the two conical wheels is still less than 1, and the rotation speed of the calendering roller group 2 at the input end is still lower than the calendering roller group 2 at the output end, which will cause the rubber belt between the two calendering roller groups 2 to continue to be consumed, and the pressure of the rubber belt on the pressure sensor 42 will exceed the standard pressure value. The linear drive source drives the tensioning component 3 to move away from the rubber belt to loosen the rubber belt. In this way, under the joint control of the tension control component 4 and the curvature control component 5, the rubber belt is restored to the standard curvature in the process of continuously approaching the standard tension. The transmission ratio between the two conical wheels reaches 1, and finally the rubber belt is restored to the equilibrium state of standard tension and standard curvature.

[0035] When the buffer amount of the rubber belt between the two calendering roller groups 2 decreases, the pressure of the rubber belt acting on the pressure sensor 42 will increase accordingly. On the one hand, the linear drive source drives the tensioning component 3 to slide away from the rubber belt through the power output end to loosen the rubber belt according to the change that the pressure on the pressure sensor 42 is higher than the standard pressure value. The pressure on the pressure sensor 42 decreases and approaches the standard pressure value, and the rubber belt also approaches the standard tension. On the other hand, while the power output end of the linear drive source drives the tensioning component 3 to slide away from the rubber belt, the power output end of the linear drive source also synchronously drives the transmission wheel 54 to move in the opposite direction through the connecting rod 6 and the shaft 53, so that the transmission ratio between the two conical wheels increases, thereby increasing the rotation speed of the power roller 21 at the input end of the rubber belt. The speed difference between the two calendering roller groups 2 causes the consumption of the "inventory" rubber belt between the two to slow down, so that the curvature of the rubber belt gradually increases. , approaching the standard curvature. As the "inventory" rubber belt accumulates, the pressure of the rubber belt on the tensioning roller 31 and the pressure sensor 42 is rapidly reduced to the standard pressure value, and the curvature of the rubber belt continues to increase and approaches the standard tension. However, at this time, the transmission ratio of the transmission wheel 54 between the two conical wheels is still greater than 1, and the rotation speed of the calendering roller group 2 at the input end is still greater than the calendering roller group 2 at the output end, which will cause the rubber belt between the two calendering roller groups 2 to continue to accumulate, and the pressure of the rubber belt on the pressure sensor 42 will be lower than the standard pressure value. The linear drive source drives the tensioning component 3 to move closer to the rubber belt to further tension the rubber belt. In this way, under the joint control of the tension control component 4 and the curvature control component 5, the rubber belt is restored to the standard curvature in the process of continuously approaching the standard tension. The transmission ratio between the two conical wheels reaches 1, and finally the rubber belt is restored to a balanced state between the standard tension and standard curvature.

[0036] It is worth mentioning that the rubber belt passes around the tensioning roller 31, and the tensioning roller 31 is in contact with the rubber belt. When the amount of "inventory" rubber belt increases or decreases, the pressure signal of the pressure sensor 42 is used to adjust the extension and contraction of the electric push rod 41 in real time, so that the tensioning roller 31 always tensions the rubber belt to avoid wrinkles in the intermediate state of the rubber belt. The displacement of the tensioning roller 31 is synchronized and coordinated with the axial displacement of the transmission wheel 54, that is, the tension control component 4 and the curvature control component 5 work together to "correct" in real time the damage to the calendering balance caused by the fluctuation of the rubber belt output, so that the calendering mechanism can operate stably.

[0037] Regarding the transmission connection structure between the two conical wheels and the corresponding power rollers 21, specifically, the one of the two conical wheels closer to the rubber belt output end is the first conical wheel 51, and the other (the conical wheel closer to the rubber belt input end) is the second conical wheel 52. A first bevel gear 55 is coaxially fixedly connected to the power roller 21 at the rubber belt output end, and a second bevel gear 56 is coaxially fixedly connected to the first conical wheel 51. The first bevel gear 55 and the second bevel gear 56 mesh with each other, thereby transmitting the power of the power roller 21 at the rubber belt output end to the first conical wheel 51. A third bevel gear 58 is rotatably connected to the frame 1, and a fourth bevel gear 59 is coaxially fixedly connected to the power roller 21 at the rubber belt input end. The third bevel gear 58 meshes with the fourth bevel gear 59. The transmission assembly 57 between the second conical wheel 52 and the third bevel gear 58 is a belt assembly or a chain assembly, thereby transmitting the power of the second conical wheel 52 to the power roller 21 at the rubber belt input end.

[0038] When a belt assembly is used as the transmission assembly 57, the belt assembly comprises a first pulley, a second pulley, and a transmission belt. The first pulley is coaxially fixedly connected to the second conical pulley 52, and the second pulley is coaxially fixedly connected to the third bevel gear 58. The transmission belt is looped between the first and second pulleys. The rotational power of the second conical pulley 52 is sequentially transmitted through the first pulley, the transmission belt, and the second pulley to the third bevel gear 58. The third bevel gear 58 then transmits the power to the power roller 21 at the input end of the rubber belt via the fourth bevel gear 59.

[0039] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A tire calendering mechanism, comprising a frame (1) and two calendering roller groups (2) arranged on the frame (1) for sequentially calendering a rubber belt, characterized in that: Also includes: A tensioning assembly (3) comprising a slider (32) slidably connected to the frame (1) and a tensioning roller (31) rotatably connected to the slider (32); A tension control assembly (4) includes a linear drive source and a pressure sensor (42) fixedly connected to a power output end of the linear drive source, wherein a pressure-receiving end of the pressure sensor (42) is fixedly connected to a slider (32), and the linear drive source drives the tensioning assembly (3) to slide according to a pressure change received by the pressure sensor (42) to tighten or loosen the rubber belt between the two calendering roller groups (2), so that the rubber belt returns to a standard tension; The curvature regulating component (5) is arranged between the two calendering roller groups (2) and adjusts the speed ratio of the two calendering roller groups (2) under the displacement of the power output end, so that the rubber belt returns to the standard curvature.

2. The tire calendering mechanism according to claim 1, characterized in that: Each of the calendering roller groups (2) comprises a power roller (21) and a driven roller (22) that cooperate with each other, and the curvature control component (5) is used to adjust the speed ratio between the power rollers (21) of the two calendering roller groups (2).

3. The tire calendering mechanism according to claim 2, characterized in that: The curvature control component (5) comprises a transmission wheel (54) and two conical wheels with identical structures, parallel axes and opposite tapered ends. The two conical wheels are each connected to a power roller (21) for transmission. The transmission wheel (54) simultaneously drives and abuts against the two conical wheels. The linear drive source can drive the transmission wheel (54) to move axially.

4. The tire calendering mechanism according to claim 3, characterized in that: The shaft (53) of the transmission wheel (54) is fixedly connected to the power output end of the linear drive source via a connecting rod (6).

5. The tire calendering mechanism according to claim 2, characterized in that: A drive motor (11) is mounted on the frame (1), and the drive motor (11) is connected to a power roller (21) near the output end of the rubber belt via a transmission (12).

6. The tire calendering mechanism according to claim 2, characterized in that: The power rollers (21) of the two calendering roller groups (2) are both rotatably connected to the frame (1); the driven roller (22) near the output end of the rubber belt is vertically slidably connected to the frame (1) via a first movable rod (7); the other driven roller (22) is horizontally slidably connected to the frame (1) via a second movable rod (71); and the distance between the two driven rollers (22) and the corresponding power rollers (21) is adjusted by sliding the first movable rod (7) and the second movable rod (71) on the frame (1).

7. The tire calendering mechanism according to claim 6, characterized in that: The frame (1) is provided with a guide rod (81) inclined at 45 degrees to the horizontal plane, a slide column (82) is slidably mounted on the guide rod (81), and the slide column (82) is slidably connected to the first movable rod (7) and the second movable rod (71) at the same time. A pitch-adjusting screw (83) is threadedly mounted on the guide rod (81) along the length direction, and the end of the pitch-adjusting screw (83) is rotatably connected to the slide column (82).

8. The tire calendering mechanism according to claim 6, characterized in that: The pressure sensor (42) is a piezoresistive pressure sensor or a ceramic pressure sensor.

9. The tire calendering mechanism according to claim 1, characterized in that: The linear drive source is an electric push rod (41) or a linear motor.

10. The tire calendering mechanism according to claim 1, characterized in that: The linear drive source and the pressure sensor (42) are both communicatively connected to a controller.

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