Tire tread winding and forming system

Abstract

The application provides a tire tread winding forming system and relates to the technical field of tire forming. The system comprises an extruder set, a sheet pressing and winding mechanism and a base. The extruder set is connected with the sheet pressing and winding mechanism. The extruder set is used for plasticizing rubber and supplying rubber rods to the sheet pressing and winding mechanism. The sheet pressing and winding mechanism is used for calendering the rubber rods into rubber sheets and winding the rubber sheets on a tire blank. The extruder set is installed on the base. The sheet pressing and winding mechanism is pivotally connected with the base. The base can move relative to the tire blank along any one of the radial direction and the axial direction of the tire blank, so as to adjust the distance between the sheet pressing and winding mechanism and the tire blank. The extruder set moves synchronously with the sheet pressing and winding mechanism. The application can make the extruder set move synchronously with the sheet pressing and winding mechanism during the tire tread winding process. The rubber sheet stretching deformation or even breakage caused by the long distance between the extruder set and the sheet pressing and winding mechanism during the winding process is avoided. The winding precision and the production continuity are affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire forming technology, in particular to a tire tread winding forming system. BACKGROUND

[0002] There are mainly two kinds of tire tread forming, one is the tread bonding forming, which is to cut the strip-shaped tread extruded by the extruder according to the process requirements into a fixed length, and then bond the tread to the tire blank to rotate one turn and roll the joint to form, and the tread bonding forming process is mainly used for tires below 25 inches in size; the other is the tread winding forming, which is to wind the narrow rubber sheet extruded by the extruder into multiple layers on the tire blank to form, and the tread winding forming process is mainly used for tires above 26 inches in size due to the limitation of the extrusion thickness and in order to reduce the labor intensity. Compared with the tread bonding forming process, the tread winding forming process can avoid the lap joint fracture defect in the tread bonding forming process, and can improve the safety of the tire, as well as the compactness and dynamic balance of the tire tread.

[0003] In the related art, the size specification of high-performance tires is usually in the range of 12-24 inches, the tread width range is 170-350 mm, and the tread thickness range is 3-12 mm, and in order to ensure the quality of tire forming, when the large-size tire tread winding forming system is directly applied to form high-performance tires, the following problems often exist:

[0004] 1. The extruded rubber sheet is too large, and the profile of the wound tread will not only exceed the profile size range of the high-performance tire, but also the width, thickness and weight precision of the wound tread profile will all exceed the process requirements of the high-performance tire;

[0005] 2. After reducing the size of the extruded rubber sheet, the rubber sheet is easily stretched and deformed or even broken in the conveying process due to the too long distance between the winding device and the extruder when the rubber sheet is wound on the blank by the winding device, thereby affecting the winding precision and the continuity of production;

[0006] 3. The rubber sheet with a smaller size will be too low in temperature after passing through the cooling drum and being conveyed to the winding head before winding the tread, and the rubber sheets are easy to be out of breath between them, and the low rubber temperature will also cause poor adhesion between the rubber sheets, and the layers are easy to fall off. SUMMARY

[0007] The present application aims to at least solve one of the technical problems in the related art to some extent.

[0008] To this end, the embodiment of the present application proposes a tire tread winding forming system which can synchronize the movement of the extruder set with the calender winding mechanism during the tire tread winding process, thereby avoiding the problem that the rubber sheet is stretched and deformed or even broken due to the too long distance between the extruder set and the calender winding mechanism during the winding process, so as to affect the winding accuracy and production continuity.

[0009] The tire tread winding forming system according to the embodiment of the present application comprises an extruder set, a calender winding mechanism and a base, the extruder set is connected with the calender winding mechanism, the extruder set is used for plasticating rubber material and supplying rubber rods to the calender winding mechanism, the calender winding mechanism is used for calendering the rubber rods into rubber sheets and winding the rubber sheets on a tire blank, the extruder set is installed on the base, the calender winding mechanism is pivotally connected with the base, and the base can move relative to the tire blank along any one of the radial direction and the axial direction of the tire blank, so as to adjust the distance between the calender winding mechanism and the tire blank and synchronize the movement of the extruder set with the calender winding mechanism.

[0010] The tire tread winding forming system according to the embodiment of the present application integrates the extruder set and the calender winding mechanism on the same base, thereby forming a tire tread winding forming system with compact overall structure, wherein, since the base can move relative to the tire blank along the radial direction and the axial direction of the tire blank, the distance between the calender winding mechanism and the tire blank can be adjusted by changing the relative position between the base and the tire blank when winding the rubber sheets on the tire blank, so that the position of the calender winding mechanism matches the diameter change of the tire blank when the base moves along the radial direction of the tire blank, and the position of the calender winding mechanism matches the width direction of the tire blank when the base moves along the axial direction of the tire blank, and since the extruder set is also installed on the base, the distance between the extruder set and the calender winding mechanism can be kept unchanged during the winding forming process of the tire blank, thereby minimizing the distance between the extruder set and the calender winding mechanism and ensuring that the rubber sheet will not be stretched and deformed, and since the calender winding mechanism is pivotally connected with the base, the calender winding mechanism can rotate alone to complete the winding operation of the rubber sheets on the tire blank, thereby effectively avoiding the problem that the turning radius of the extruder set is too large when the extruder set rotates with the calender winding mechanism, so that a large space is required for the tire blank winding, and thus, compared with the related art, the present application can synchronize the movement of the extruder set with the calender winding mechanism during the tire tread winding process, thereby avoiding the problem that the rubber sheet is stretched and deformed or even broken due to the too long distance between the extruder set and the calender winding mechanism during the winding process, so as to affect the winding accuracy and production continuity.

[0011] In some embodiments, the winding forming system further comprises a rubber supply conveying belt, the rubber supply conveying belt conveys rubber material in a direction from a tail portion to a head portion, the head portion of the rubber supply conveying belt is pivotally connected with the extruder set and is used for supplying rubber material to the extruder set, and the tail portion of the rubber supply conveying belt is pivotally connected with a work site;

[0012] The head of the glue supply conveyor belt is retractable relative to the tail along the conveying direction of the glue supply conveyor belt to adjust the length of the glue supply conveyor belt, so that the head of the glue supply conveyor belt moves with the extruder group.

[0013] In some embodiments, the extruder group comprises an extruder body and an extruder head, the extruder body is pivotally connected with the head of the glue supply conveyor belt and is capable of receiving and plasticizing the glue material, the extruder head is in communication with the extruder body and is connected with the tablet winding mechanism, and the extruder head is capable of extruding the glue material into the glue stick output.

[0014] In some embodiments, the extruder group further comprises a driving member and a gear pump, the driving member is in driving connection with the gear pump and is used to drive the gear pump, and the extruder body is in communication with the extruder head through the gear pump to pressurize and convey the glue material into the extruder head.

[0015] In some embodiments, at least one of the extruder body and the extruder head is detachably connected with the gear pump through a locking assembly.

[0016] In some embodiments, the locking assembly comprises a locking flange and a pneumatic clamping ring, any one of the extruder body and the extruder head is in communication with the gear pump through the locking flange, and the pneumatic clamping ring is sleeved on the outer peripheral wall of the locking flange and is used to clamp the locking flange.

[0017] In some embodiments, the winding forming system further comprises a support and a floating roller, the support is installed on the extruder head, the floating roller is located on the conveying path of the glue stick and is movably connected with the support in the height direction, and the floating roller is capable of reversing the glue stick between the extruder head and the tablet winding mechanism.

[0018] The floating roller has a first position and a second position, and the floating roller is capable of switching between the first position and the second position to adjust the length of the glue stick between the extruder head and the tablet winding mechanism.

[0019] In some embodiments, the glue stick is adapted to roll in contact with the floating roller from below, the height of the floating roller in the first position is higher than that in the second position, the glue stick is capable of pushing the floating roller from the second position to the first position, the floating roller is capable of switching from the first position to the second position under the action of its own gravity, and the rotating speed of the screw of the extruder body in the first position is less than that in the second position.

[0020] In some embodiments, the floating roller is in rolling contact with the support frame.

[0021] In some embodiments, the winding forming system further comprises a first idler roller and a second idler roller, both of which are pivotally mounted on the support frame and located on the conveying path of the rubber rod, the first idler roller is capable of reversing the rubber rod between the extruder head and the floating roller, the second idler roller is capable of reversing the rubber rod between the floating roller and the tablet winding mechanism, both of the first idler roller and the second idler roller are adapted to be in rolling contact with the rubber rod.

[0022] In some embodiments, the second idler roller is multiple and arranged in intervals along the conveying direction of the rubber rod.

[0023] In some embodiments, the winding forming system further comprises a displacement sensor, which is mounted on the support frame, and is used to detect the position of the floating roller in the height direction.

[0024] In some embodiments, the winding forming system further comprises a width measuring sensor, which is mounted on the support frame and arranged adjacent to the second idler roller, and is used to detect the diameter of the rubber rod.

[0025] In some embodiments, the winding forming system further comprises a traction rope, a counterweight, and a deflection wheel, the first end of the traction rope is connected to the floating roller, the second end of the traction rope is connected to the counterweight, the deflection wheel is pivotally mounted on the support frame and arranged above each of the floating roller and the counterweight, the deflection wheel is located on the traction path of the traction rope and reverses the traction rope;

[0026] When the floating roller is switched from the second position to the first position, the counterweight is capable of balancing the self-gravity of the floating roller together with the rubber rod.

[0027] In some embodiments, the tablet winding mechanism comprises a compression roller set, a compression roller, a rotary support, and a rotary drive, both of the compression roller set and the compression roller are pivotally mounted on the rotary support and the pivot axes of both are in the same direction, the compression roller set is arranged adjacent to the outer peripheral wall of the compression roller and is provided with a rubber passing channel, the rubber passing channel is connected to the second idler roller, the rubber rod can enter the rubber passing channel and be compressed into the rubber sheet by the compression roller set, the rubber sheet can be wrapped on the outer peripheral wall of the compression roller, the rotary support is pivotally connected to the base and is connected to the rotary drive in transmission, so as to adjust the direction of the pivot axis of the compression roller to be consistent with the direction of the pivot axis of the tire blank;

[0028] The outer peripheral wall of the expelling roller is adapted to be in rolling contact with the outer peripheral wall of the tire blank so as to press the rubber sheet to be wound on the tire blank.

[0029] In some embodiments, the sheet pressing and winding mechanism further comprises a telescopic cylinder and a support, the cylinder body of the telescopic cylinder is mounted on the rotary support, the piston rod of the telescopic cylinder is connected with the support, the support is movably connected with the rotary support, the profile roller set and the expelling roller are both mounted on the rotary support through the support, and the telescopic cylinder is capable of pushing and pulling the support to extend or retract relative to the rotary support so as to adjust the distance between the outer peripheral wall of the expelling roller and the outer peripheral wall of the tire blank.

[0030] In some embodiments, the base comprises a first platform, a second platform and a fixed frame arranged in sequence along the height direction, the extruder set is mounted on the first platform, the sheet pressing and winding mechanism is pivotably connected with the first platform, one of the first platform and the fixed frame is movably connected with the second platform along the radial direction of the tire blank, and the other is movably connected with the second platform along the axial direction of the tire blank, and the fixed frame is mounted on the working site.

[0031] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic diagram of a tire tread winding forming system according to an embodiment of the application.

[0033] Figure 2 is a structural schematic diagram of the connection between the tire tread winding forming system and the winding working station according to an embodiment of the application.

[0034] Figure 3 is a structural schematic diagram of the connection between the extruder body, the extruder head, the driving member and the gear pump in the tire tread winding forming system according to an embodiment of the application.

[0035] Figure 4 is a front view structural schematic diagram of the support and the floating roller part in the tire tread winding forming system according to an embodiment of the application.

[0036] Figure 5 is a top view structural schematic diagram of the support and the floating roller part in the tire tread winding forming system according to an embodiment of the application.

[0037] Figure 6 is a structural schematic diagram of the sheet pressing and winding mechanism in the tire tread winding forming system according to an embodiment of the application.

[0038] Figure 7This is a schematic diagram of the structure of the base in the tire tread winding system according to an embodiment of the present invention.

[0039] Reference numerals: 1. Extruder unit; 11. Extruder body; 12. Extruder head; 13. Drive unit; 14. Gear pump; 15. Locking assembly; 151. Locking flange; 152. Pneumatic clamping ring; 2. Sheet winding mechanism; 21. Forming roller group; 22. Pressing and discharging roller; 23. Rotary support; 24. Support; 3. Base; 31. First platform; 32. Second platform; 33. Fixed frame; 4. Tire blank; 5. Glue supply conveyor belt; 6. Support; 7. Floating roller; 71. First idler roller; 72. Second idler roller; 73. Counterweight; 74. Steering wheel; 8. Displacement sensor; 9. Width sensor. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a tire tread winding system, including an extruder unit 1, a sheet winding mechanism 2, and a base 3. The extruder unit 1 is connected to the sheet winding mechanism 2. The extruder unit 1 is used to plasticize rubber material and supply rubber rods to the sheet winding mechanism 2. The sheet winding mechanism 2 is used to calender the rubber rods into rubber sheets for output and to wind the rubber sheets onto the tire blank 4. The extruder unit 1 is mounted on the base 3. The sheet winding mechanism 2 is pivotally connected to the base 3. The base 3 can move relative to the tire blank 4 in either the radial or axial direction of the tire blank 4. That is, the base 3 can move relative to the tire blank 4 in the radial direction of the tire blank 4 and can move relative to the tire blank 4 in the axial direction of the tire blank 4, so as to adjust the distance between the sheet winding mechanism 2 and the tire blank 4, so that the extruder unit 1 and the sheet winding mechanism 2 move synchronously.

[0042] It can be understood that the tire tread winding forming system according to the embodiment of the present application integrates the extruder set 1 and the sheet winding mechanism 2 on the same base 3 to form a tire tread winding forming system with compact overall structure, wherein, since the base 3 can move relative to the tire blank 4 along the radial direction and the axial direction of the tire blank 4, when winding the sheet on the tire blank 4, the distance between the sheet winding mechanism 2 and the tire blank 4 can be adjusted by changing the relative position between the base 3 and the tire blank 4, so that the position of the sheet winding mechanism 2 matches the diameter change of the tire blank 4 when the base 3 moves along the radial direction of the tire blank 4, and the position of the sheet winding mechanism 2 can match the width direction of the tire blank 4 when the base 3 moves along the axial direction of the tire blank 4, and since the extruder set 1 is also installed on the base 3, the distance between the extruder set 1 and the sheet winding mechanism 2 can be kept unchanged during the winding forming process of the tire blank 4, the distance between the extruder set 1 and the sheet winding mechanism 2 is shortened to the maximum extent, and it is ensured that the sheet will not be stretched and deformed, and the sheet winding mechanism 2 is pivotally connected to the base 3, so that the sheet winding mechanism 2 can rotate alone to complete the winding operation of the sheet on the tire blank 4, effectively avoiding the problem that the turning radius of the extruder set 1 is too large when the extruder set 1 rotates with the sheet winding mechanism 2, so that a large space is required for the winding of the tire blank 4, and compared with the related art, the present application can make the extruder set 1 move synchronously with the sheet winding mechanism 2 during the tire tread winding process, avoid the problem that the sheet is stretched and deformed or even broken due to the long distance between the extruder set 1 and the sheet winding mechanism 2 during the winding process, and affect the winding precision and production continuity.

[0043] Specifically, the radial direction of the tire blank 4 can be the left-right direction in the figure. The axial direction of the tire blank 4 can be the front-rear direction in the figure. The extruder set 1 can be located on the right side of the sheet winding mechanism 2. Both the extruder set 1 and the sheet winding mechanism 2 can be located above the base 3. In the present application, the width of the calendered sheet ranges from 20 to 30 mm, wherein the width of the sheet can be, for example, 20 mm, 22 mm, 24 mm, 25 mm, 26 mm, 28 mm, 30 mm, etc., but is not limited to the listed values, and other values not listed within this range are also applicable; the thickness of the calendered sheet ranges from 1 to 2 mm, wherein the thickness of the sheet can be, for example, 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.8 mm, 2 mm, etc., but is not limited to the listed values, and other values not listed within this range are also applicable.

[0044] It should be noted that the present application is applicable to the forming of online or offline high-performance radial tires. In the present application, the extruded sheet is designed with the aforementioned dimensions, and the tread profile formed by winding will not exceed the size range of the high-performance tire tread profile, and the width, thickness and weight precision of the tread profile formed by winding also meet the process requirements of high-performance tires.

[0045] As Figure 1and Figure 2 As shown, in some embodiments, the winding system further includes a glue supply conveyor belt 5 that conveys glue in a direction from tail to head. The head of the glue supply conveyor belt 5 is pivotally connected to the extruder unit 1 and is used to supply glue to the extruder unit 1. The tail of the glue supply conveyor belt 5 is pivotally connected to the work site.

[0046] The head of the glue supply conveyor belt 5 can extend and retract relative to the tail along the conveying direction of the glue supply conveyor belt 5 to adjust the length of the glue supply conveyor belt 5 so that the head of the glue supply conveyor belt 5 moves with the extruder unit 1.

[0047] Understandably, by adopting the above structural design, the head of the glue supply conveyor belt 5 can move along either the radial or axial direction of the extruder unit 1 along the tire blank 4, while the feeding position of the tail of the glue supply conveyor belt 5 will not change, thereby enabling continuous and stable glue supply to the extruder unit 1.

[0048] like Figure 3 As shown, in some embodiments, the extruder unit 1 includes an extruder body 11 and an extruder head 12. The extruder body 11 is pivotally connected to the head of the rubber supply conveyor belt 5 and can receive and plasticize the rubber material. The extruder head 12 is connected to the extruder body 11 and connected to the sheet winding mechanism 2. The extruder head 12 can extrude the rubber material into rubber rods for output.

[0049] Specifically, the extruder body 11 may include a barrel, a screw, and a drive assembly. The barrel has a receiving cavity and a feeding seat communicating with the receiving cavity. The feeding seat is connected to the head of the rubber supply conveyor belt 5 so that the rubber to be plasticized is continuously supplied to the feeding seat by the rubber supply conveyor belt 5. The screw is pivotally mounted in the receiving cavity and is driven by the drive assembly so that the screw rotates to push the rubber towards the extruder head 12. The drive assembly may include, but is not limited to, a motor and a reducer. The motor is driven by the reducer and the screw. The head of the rubber supply conveyor belt 5 can be mounted on the upper surface of the reducer by a column, and the tail of the rubber supply conveyor belt 5 can be mounted on the ground of the working site by a column so that the rubber supply conveyor belt 5 can move with the extruder unit 1 in the front-back direction and the left-right direction, relying on the power of the base 3.

[0050] like Figure 3As shown, in some embodiments, the extruder set 1 further comprises a driving member 13 and a gear pump 14, the driving member 13 is in driving connection with the gear pump 14 and is used to drive the gear pump 14, the extruder body 11 is in communication with the extruder head 12 through the gear pump 14 to deliver the rubber compound into the extruder head 12. The gear pump 14 is arranged between the barrel and the extruder head 12, and the barrel can be in communication with the extruder head 12 through the gear pump 14. The main function of the gear pump 14 is to extrude the high-temperature rubber compound delivered from the extruder body 11 into a rubber rod in a stable flow rate, i.e., a rubber stick. The driving member 13 can not be limited to a driving motor.

[0051] It can be understood that the extruder body 11 pushes the rubber compound to the extruder head 12 through the rotation of the screw. Due to the influence of the screw rotation direction and the non-uniformity or instability of the supply on the annular gap between the screw and the inner circumferential wall of the accommodating cavity, the rubber compound pushed to the extruder head 12 will fluctuate, so that the size of the rubber stick extruded from the extruder head 12 changes, and finally the weight and profile accuracy of the winding product are low. Therefore, by adding the gear pump 14 between the barrel and the extruder head 12, the high-temperature rubber compound from the extruder body 11 can be pressurized, and the rubber compound can be stably delivered into the extruder head 12 in a stable flow rate after being stabilized by the gear pump 14, and then supplied to the tablet winding mechanism 2, thereby greatly reducing the fluctuation of the extruded rubber stick, and greatly improving the weight and cross-sectional profile quality of the winding semi-product.

[0052] Preferably, the gear pump 14 is a positive displacement gear pump 14, which uses a pair of externally meshing cylindrical gears to rotate relative to each other to deliver high-viscosity rubber compound. Its main function is to significantly improve the stability of the rubber compound pressure and realize the nearly linear output of the rubber compound flow rate, so as to control the stability of the diameter of the rubber stick extruded from the extruder head 12 and reduce the size fluctuation of the final rubber stick.

[0053] As shown in the drawings, Figure 3 In some embodiments, at least one of the extruder body 11 and the extruder head 12 is detachably connected with the gear pump 14 through the locking assembly 15.

[0054] Specifically, the barrel is detachably connected with the gear pump 14 through the locking assembly 15; or the extruder head 12 is detachably connected with the gear pump 14 through the locking assembly 15; or both the barrel and the extruder head 12 are detachably connected with the gear pump 14 through the locking assembly 15.

[0055] It can be understood that the detachable connection between any two adjacent ones of the extruder body 11 (i.e., the barrel), the gear pump 14 and the extruder head 12 can facilitate the later disassembly and maintenance.

[0056] As shown in the drawings, Figure 3As shown, in some embodiments, the locking assembly 15 includes a locking flange 151 and a pneumatic clamping ring 152. Either the extruder body 11 or the extruder head 12 is connected to the gear pump 14 via the locking flange 151. The pneumatic clamping ring 152 is sleeved on the outer peripheral wall of the locking flange 151 and is used to clamp the locking flange 151 so that when the tire tread winding molding system is working, the pneumatic clamping ring 152 clamps the locking flange 151, so that the gear pump 14 and the barrel, or the gear pump 14 and the extruder head 12 are tightly connected to prevent glue leakage. When it is necessary to change the rubber material, the locking flange 151 can be manually rotated by loosening the pneumatic clamping ring 152 to facilitate cleaning the remaining rubber material between the gear pump 14 and the barrel, or between the gear pump 14 and the extruder head 12.

[0057] Specifically, the barrel and gear pump 14 are connected via locking flange 151; or, the extruder head 12 and gear pump 14 are connected via locking flange 151; or, both the barrel and extruder head 12 are connected to the gear pump 14 via locking flange 151. The locking flange 151 between the gear pump 14 and the barrel corresponds to the locking flange 151 on the right side of the figure. The locking flange 151 between the gear pump 14 and the extruder head 12 corresponds to the locking flange 151 on the left side of the figure.

[0058] like Figure 4 and Figure 5 As shown, in some embodiments, the winding system further includes a support 6 and a floating roller 7. The support 6 is mounted on the extruder head 12, and the floating roller 7 is located on the conveying path of the rubber rod and is movably connected to the support 6 in the height direction. The floating roller 7 is capable of reversing the direction of the rubber rod between the extruder head 12 and the tablet winding mechanism 2.

[0059] The floating roller 7 has a first position and a second position, and the floating roller 7 can switch between the first position and the second position to adjust the length of the rubber rod between the extruder head 12 and the tablet winding mechanism 2.

[0060] It is understandable that adjusting the position of the floating roller 7 along the height direction between the extruder head 12 and the tablet winding mechanism 2 can change the length of the rubber rod stored between the extruder head 12 and the tablet winding mechanism 2, so as to adapt to the rubber rod output during the operation of the winding molding system. This ensures that the rubber rod is smoothly conveyed between the extruder head 12 and the tablet winding mechanism 2, while further ensuring the stability of the dimensional accuracy of the extruded rubber rod and preventing the rubber rod from being stretched and deformed.

[0061] Specifically, the height direction can be the up-down direction as shown in the figure. The bracket 6 can extend in the up-down direction.

[0062] like Figure 4 and Figure 5As shown, in some embodiments, the glue rod is adapted to roll into contact with the lower part of the floating roller 7. The height of the floating roller 7 in the first position is higher than its height in the second position. The glue rod can push the floating roller 7 from the second position to the first position. The floating roller 7 can switch from the first position to the second position under its own gravity. In the first position, the rotational speed of the screw of the extruder body 11 is less than the rotational speed of the screw of the extruder body 11 in the second position. The floating roller 7 can slide along the front surface of the bracket 6 in the figure.

[0063] Understandably, designing the glue rod to roll in contact with the lower part of the floating roller 7 for reversing the glue rod's direction allows for flexible adjustment of the floating roller 7's position based on the traction force during glue rod transport and the weight of the floating roller 7 itself, along with the screw's rotational speed. When the floating roller 7 is in a higher position, increasing the screw's rotational speed increases the amount of glue rod extruded, guiding the floating roller 7 downwards under its own weight. Conversely, when the floating roller 7 is in a lower position, decreasing the screw's rotational speed reduces the amount of glue rod extruded, guiding the floating roller 7 upwards under the glue rod's traction force. This, in conjunction with the tablet winding mechanism 2, ensures that the floating roller 7 is in the appropriate position and that the gravity acting on the glue rod remains constant, maintaining the stability of the extruded glue rod's diameter.

[0064] Furthermore, the floating roller 7 makes rolling contact with the support 6 to significantly reduce the friction between them, ensuring that the stretching of the rubber rod is within the allowable range. Compared to the linear guide structure between the floating roller 7 and the support 6 in related technologies, this reduces the sliding friction coefficient of the floating roller 7. For example, the floating roller 7 can roll up and down on the surface of the support 6 via rolling bearings.

[0065] like Figure 4 and Figure 5 As shown, in some embodiments, the winding system further includes a first idler roller 71 and a second idler roller 72, both of which are pivotally mounted on the support 6 and located on the conveying path of the rubber rod. The first idler roller 71 is capable of reversing the direction of the rubber rod between the extruder head 12 and the floating roller 7, and the second idler roller 72 is capable of reversing the direction of the rubber rod between the floating roller 7 and the tablet winding mechanism 2. Both the first idler roller 71 and the second idler roller 72 are adapted to roll contact with the rubber rod. For example, the rubber rod output from the extruder head 12 can pass through the upper surface of the first idler roller 71, then through the underside of the floating roller 7, then be conveyed to the upper surface of the second idler roller 72, and finally enter the tablet winding mechanism 2.

[0066] Understandably, the cooperation of the first idler roller 71 and the second idler roller 72 with the floating roller 7 can further ensure the smooth transport of the rubber rod between the extruder head 12 and the tablet winding mechanism 2.

[0067] Specifically, the first roller 71 corresponds to the U-shaped roller on the right side of the figure. The second roller 72 corresponds to the U-shaped roller on the left side of the figure. The direction of the pivot axis of the first roller 71, the direction of the pivot axis of the second roller 72, and the direction of the pivot axis of the floating roller 7 are all consistent.

[0068] Further, the second roller 72 is multiple and arranged in intervals along the conveying direction of the rubber rod, so as to ensure stable support and conveying of the rubber rod by the multiple second rollers 72. In addition, according to actual conditions, the second roller 72 at a suitable position can be selected to be connected with the floating roller 7, that is, the rubber rod after being reversed by the floating roller 7 can be reversed again by the second roller 72 at the suitable position to enter the tablet wrapping mechanism 2.

[0069] As shown in Figure 4 some embodiments, the winding forming system further comprises a displacement sensor 8 mounted on the support 6, and the displacement sensor 8 is used to detect the position of the floating roller 7 in the height direction. The displacement sensor 8 can not be limited to a linear displacement sensor 8.

[0070] As shown in Figure 4 some embodiments, the winding forming system further comprises a width measuring sensor 9 mounted on the support 6 and arranged adjacent to the second roller 72, and the width measuring sensor 9 is used to detect the diameter of the rubber rod.

[0071] It can be understood that the data information detected by the displacement sensor 8 and the width measuring sensor 9 can be fed back to the upper computer of the winding forming system, so that the upper computer automatically controls the rotating speed of the screw rod according to the detection information, adjusts the rubber rod extrusion amount of the extruder head 12, and ensures the stability of the size of the rubber rod entering the tablet wrapping mechanism 2.

[0072] As shown in Figure 4 and Figure 5 some embodiments, the winding forming system further comprises a traction rope (not shown in the figure), a counterweight 73, and a deflection wheel 74. The first end of the traction rope is connected with the floating roller 7, the second end of the traction rope is connected with the counterweight 73, the deflection wheel 74 is pivotally mounted on the support 6 and arranged above each of the floating roller 7 and the counterweight 73, and the deflection wheel 74 is located on the traction path of the traction rope and reverses the traction rope.

[0073] When the floating roller 7 is switched from the second position to the first position, the counterweight 73 can balance the self-gravity of the floating roller 7 together with the rubber rod.

[0074] It can be understood that through the cooperation of the traction rope, the counterweight 73, and the deflection wheel 74, the traction force required when the position of the floating roller 7 is adjusted by the rubber rod can be reduced, and it is ensured that the floating roller 7 can flexibly move up and down under the action of the rubber rod and its own gravity.

[0075] Specifically, the traction rope is not limited to a steel wire rope. The floating roller 7 can be located on the front side of the support 6. The counterweight 73 can be located on the rear side of the support 6. The pulley can be located on top of the support 6.

[0076] like Figure 6 As shown, in some embodiments, the pressing and winding mechanism 2 includes a forming roller group 21, a pressing roller group 22, a rotary support 23, and a rotary drive (not shown in the figure). The forming roller group 21 and the pressing roller group 22 can both be pivotally mounted on the rotary support 23, and the pivot axes of the two are in the same direction. The forming roller group 21 is arranged adjacent to the outer peripheral wall of the pressing roller group 22 and is provided with a glue passage. The glue passage is connected to the second support roller 72, and the glue rod can enter the glue passage and be pressed into a film by the forming roller group 21. The film can cover the outer peripheral wall of the pressing roller group 22. The rotary support 23 is pivotally connected to the base 3 and is connected to the rotary drive to adjust the pivot axis of the pressing roller group 22 to be in the same direction as the pivot axis of the tire blank 4.

[0077] The outer peripheral wall of the pressure roller 22 is adapted to roll contact with the outer peripheral wall of the tire blank 4 so that the film is pressed tightly and wound around the tire blank 4.

[0078] It is understandable that, through the above-mentioned pressing and winding mechanism 2, after the rubber rod extruded from the extruder head 12 is conveyed to the forming roller group 21 via the second support roller 72 to press out an arc-shaped thin rubber sheet, the rubber sheet is then conveyed to the pressing roller 22 below the forming roller group 21. Since the forming roller group 21 and the pressing roller 22 can rotate relative to the tire blank 4 with the rotary support 23, the angle between the pressing roller 22 and the tire blank 4 can be adjusted independently. Therefore, with the joint cooperation of the base 3 and the rotary drive, it can be ensured that the upper surface of the pressing roller 22 is tightly pressed with the tire blank 4, and the rubber sheet is spirally wound onto the tire blank 4 to form a tire surface that meets the process requirements.

[0079] Specifically, the forming roller assembly 21 can be located above and to the side of the pressing roller 22. The forming roller assembly 21 may include two forming rollers, which are arranged adjacent to each other vertically, and a glue passage is defined between their outer peripheral walls. The forming roller assembly 21 can be driven to rotate automatically by a drive unit, so that, based on the diameter of the glue rod measured by the width measuring sensor 9, when the diameter of the glue rod is greater than a set diameter, the drive unit increases the rotation speed of the forming roller assembly 21 to stretch the glue rod and reduce its diameter; and when the diameter of the glue rod is less than the set diameter, the drive unit slows down the rotation speed of the forming roller assembly 21 to compress the glue rod and increase its diameter, thereby maintaining the stability of the diameter of the extruded glue rod.

[0080] like Figure 6As shown, in some embodiments, the pressing and winding mechanism 2 further includes a telescopic cylinder (not shown) and a support 24. The cylinder body of the telescopic cylinder is mounted on the rotary support 23, and the piston rod of the telescopic cylinder is connected to the support 24. The support 24 is movably connected to the rotary support 23. The forming roller group 21 and the pressing roller 22 are both mounted on the rotary support 23 through the support 24. The telescopic cylinder can push and pull the support 24 to extend or retract relative to the rotary support 23 to adjust the distance between the outer peripheral wall of the pressing roller 22 and the outer peripheral wall of the tire blank 4, change the pressing force between them, adapt to the change of tread thickness, and ensure that the film is pressed firmly on the tire blank 4.

[0081] Specifically, the telescopic cylinder may be, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or a hydraulic cylinder. The support 24 may be located above the slewing support 23. To further ensure the smooth sliding of the support 24 on the slewing support 23, a sliding guide rail may also be provided between the two.

[0082] like Figure 7 As shown, in some embodiments, the base 3 includes a first platform 31, a second platform 32 and a fixing frame 33 arranged sequentially along the height direction. The extruder unit 1 is installed on the first platform 31. The tablet winding mechanism 2 is pivotally connected to the first platform 31. One of the first platform 31 and the fixing frame 33 is movably connected to the second platform 32 along the radial direction of the tire blank 4, and the other is movably connected to the second platform 32 along the axial direction of the tire blank 4. The fixing frame 33 is installed at the work site.

[0083] Specifically, the first platform 31, the second platform 32, and the fixed frame 33 can be arranged sequentially from top to bottom. The fixed frame 33 can be fixed to the ground of the work area with screws. Linear sliding movements between the first platform 31 and the second platform 32, as well as between the second platform 32 and the fixed frame 33, can be achieved through ball screw structures. The ball screw structure can be connected to a host computer to control the moving speed of the first platform 31 and the second platform 32.

[0084] It should be noted that by adopting the tire tread winding system described in this invention, the tire tread extrusion production line system required for high-performance tire tread bonding is replaced, thereby reducing the production cost of high-performance tires. This allows for flexible production of high-performance tires in small batches across multiple specifications, while avoiding the tread overlap breakage defect present in tread bonding. The tire tread winding system described in this invention avoids various problems associated with directly applying large-specification tire tread winding systems to high-performance tires. Furthermore, it offers a significant improvement in technical precision compared to large-specification tire tread winding. A comparison of the main technical parameters is shown in Table 1 below.

[0085] Table 1 Comparison of Technical Parameters for Wound Treads

[0086] Winding tread technical parameters Large size tire tread winding forming High performance tire tread winding forming Winding tread weight accuracy ±1.5％ ±0.5％ Winding tread width accuracy ± 5 mm ± 2 mm Winding tread thickness accuracy ± 1.5 mm ± 0.5 mm Winding tread symmetry point accuracy ≤ 3 mm ≤ 1 mm

[0087] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0088] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0089] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0090] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0091] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0092] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A tire tread winding and forming system characterized by, The invention relates to a device for manufacturing a tire, comprising: an extruder group and a sheeting winding mechanism, the extruder group being connected to the sheeting winding mechanism, the extruder group being used for plasticizing rubber material and supplying a rubber rod to the sheeting winding mechanism, the sheeting winding mechanism being used for calendering the rubber rod into a rubber sheet output and winding the rubber sheet onto a tire blank; and a base, the extruder group being installed on the base, the sheeting winding mechanism being pivotally connected to the base, the base being capable of moving relative to the tire blank along any one of the radial direction and the axial direction of the tire blank, so as to adjust the distance between the sheeting winding mechanism and the tire blank, the extruder group being synchronously moved with the sheeting winding mechanism; the extruder group comprising an extruder body and an extruder head; further comprising a support and a floating roller, the support being installed on the extruder head, the floating roller being located on the conveying path of the rubber rod and being movably connected to the support in the height direction, the floating roller being capable of reversing the rubber rod between the extruder head and the sheeting winding mechanism; the floating roller having a first position and a second position, the floating roller being capable of switching between the first position and the second position to adjust the length of the rubber rod between the extruder head and the sheeting winding mechanism; further comprising a first carrier roller and a second carrier roller, the first carrier roller and the second carrier roller being both pivotally installed on the support and being located on the conveying path of the rubber rod, the first carrier roller being capable of reversing the rubber rod between the extruder head and the floating roller, the second carrier roller being capable of reversing the rubber rod between the floating roller and the sheeting winding mechanism, the first carrier roller and the second carrier roller being both adapted to rollingly contact the rubber rod; the sheeting winding mechanism comprising a profile roller set, a calender roller, a rotary support and a rotary drive, the profile roller set and the calender roller being both pivotally installed on the rotary support and having the same pivot axis, the profile roller set being arranged adjacent to the outer peripheral wall of the calender roller and being provided with a rubber passing channel, the rubber passing channel being connected to the second carrier roller, the rubber rod being capable of entering the rubber passing channel and being pressed into the rubber sheet output by the profile roller set, the rubber sheet being capable of being wrapped around the outer peripheral wall of the calender roller, the rotary support being pivotally connected to the base and being drivingly connected to the rotary drive, so as to adjust the direction of the pivot axis of the calender roller to be consistent with the direction of the pivot axis of the tire blank; the sheeting winding mechanism further comprising a telescopic cylinder and a support base, the cylinder body of the telescopic cylinder being installed on the rotary support, the piston rod of the telescopic cylinder being connected to the support base, the support base being movably connected to the rotary support, the profile roller set and the calender roller being both installed on the rotary support through the support base, the telescopic cylinder being capable of pushing and pulling the support base to extend or retract relative to the rotary support, so as to adjust the distance between the outer peripheral wall of the calender roller and the outer peripheral wall of the tire blank.

2. The tire tread wrap forming system of claim 1, wherein, The rubber conveying belt is pivotally connected with the extruder set at the head part and used to supply rubber to the extruder set, and pivotally connected with the work site at the tail part; The head part of the rubber conveying belt is telescopic relative to the tail part in the conveying direction of the rubber conveying belt, so as to adjust the length of the rubber conveying belt and move the head part of the rubber conveying belt with the extruder set.

3. The tire tread wrap forming system of claim 2, wherein, The extruder body is pivotally connected with the head part of the rubber conveying belt and used to receive and plasticize rubber, the extruder head is communicated with the extruder body and connected with the tablet winding mechanism, and the extruder head is used to extrude rubber into the rubber rod output; The extruder set further comprises a driving member and a gear pump, the driving member is drivingly connected with the gear pump and used to drive the gear pump, and the extruder body is communicated with the extruder head through the gear pump to pressurize and convey rubber into the extruder head.

4. The tire tread wrap forming system of claim 3, wherein, At least one of the extruder body and the extruder head is detachably connected with the gear pump through a locking assembly; The locking assembly comprises a locking flange and a pneumatic clamping ring, any one of the extruder body and the extruder head is communicated with the gear pump through the locking flange, and the pneumatic clamping ring is sleeved on the outer peripheral wall of the locking flange and used to clamp the locking flange.

5. The tire tread wrap forming system of claim 1, wherein, The rubber rod is adapted to rollingly contact the lower part of the floating roller, the height of the floating roller in the first position is higher than that in the second position, the rubber rod can push the floating roller from the second position to the first position, the floating roller can switch from the first position to the second position under the action of its own gravity, and the rotating speed of the screw rod of the extruder body in the first position is lower than that in the second position. And / or, the floating roller rollingly contacts the support.

6. The tire tread wrap forming system of claim 1, wherein, The second roller is a plurality of and arranged in intervals along the conveying direction of the rubber rod.

7. The tire tread wrap forming system of claim 1, wherein, Further comprising: A displacement sensor is installed on the support, and the displacement sensor is used to detect the position of the floating roller in the height direction; And / or A width measuring sensor is installed on the support and arranged adjacent to the second roller, and the width measuring sensor is used to detect the diameter of the rubber rod.

8. The tire tread wrap forming system of any of claims 5-7, wherein, Further comprising a traction rope, a counterweight and a steering wheel, the first end of the traction rope is connected with the floating roller, the second end of the traction rope is connected with the counterweight, the steering wheel is pivotally installed on the support and arranged above each of the floating roller and the counterweight, the steering wheel is located on the traction path of the traction rope and reverses the traction rope; When the floating roller switches from the second position to the first position, the counterweight can balance the self-gravity of the floating roller together with the rubber rod.

9. The tire tread wrap forming system of claim 8, wherein, The base comprises a first platform, a second platform and a fixing frame arranged in sequence along the height direction, the extruder group is installed on the first platform, the tablet winding mechanism is pivotally connected with the first platform, one of the first platform and the fixing frame is movably connected with the second platform along the radial direction of the tire blank, and the other is movably connected with the second platform along the axial direction of the tire blank, and the fixing frame is installed at a work site.

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