Tablet winding device for tire tread
Through the integrated tire tread tread with a tablet wrapping device, the glue rod tableting and tread wrapping process are integrated together, which solves the problems of film stretching deformation and low glue temperature, and improves the winding accuracy and product quality of the tire tread.
Patent Information
- Application Number
- CN202411988822.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-02-25
AI Technical Summary
In the tire tread winding molding process, the film is easily stretched and deformed when output from the tablet press to the winding device, resulting in low winding accuracy and long conveying distance, resulting in too low glue temperature, which is easy to produce air and defective products.
An integrated tire tread tread is designed to integrate the glue rod tread and the tread winding process. Through the combination of the press roller group and the press-exhaust roller, the film maintains a stable size and temperature during the winding process.
The spacing between the glue rod tablet pressing and tread wrapping process is effectively reduced, the film stretching deformation and the rubber temperature are avoided, and the tire tread wrapping accuracy and product quality are improved.
Smart Images
Figure CN119502431A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tire molding, in particular to a tire tread sheet winding device. Background Art
[0002] Tire tread molding mainly includes two types: tread lamination molding and tread winding molding. Compared with tread lamination molding, tread winding molding can avoid the tread lap joint fracture defect, and can improve tire safety, as well as the density and dynamic balance of the tire tread. In the related art, the tablet press and winding device of the tread winding molding are often large components with separate layouts. The tablet press is generally far away from the winding device and close to the extruder. Its main function is to roll the film extruded by the extruder into an isosceles trapezoid that meets the process requirements for the second time, and then convey the isosceles trapezoidal film to the winding device through the cooling drum and the conveyor belt. The winding device is arranged close to the tire drum of the molding machine, and for the convenience of operation and to ensure sufficient avoidance space, it is necessary to ensure that there is a long distance between the extruder and the winding device.
[0003] Since the layout of the sheet press and the winding device are dispersed, during the tread winding process of the engineering tire, the film pressed out from the sheet press is easily stretched and deformed when it is transported to the winding device, resulting in low tire tread winding accuracy. At the same time, the long conveying distance also makes it difficult to avoid the problem of various defective products caused by air pockets due to low rubber temperature. Summary of the invention
[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.
[0005] To this end, an embodiment of the present invention proposes a sheet pressing and winding device for a tire tread, which integrates the rubber stick sheet pressing process and the tread winding process in the tread winding molding process into one, so that the rubber sheet can be reliably transported with a stable size when it is wrapped around the tread after being pressed out, thereby ensuring the winding accuracy of the tire tread.
[0006] The tire tread sheet winding device according to the embodiment of the present invention comprises a profile roller group, a compression and exhaust roller, a rotary support and a rotary drive. The profile roller group and the compression and exhaust roller are both pivotally mounted on the rotary support through a base and the directions of the pivot axes of the two are consistent. The profile roller group is arranged adjacent to the outer peripheral wall of the compression and exhaust roller and has a glue passing channel. The glue passing channel is suitable for pressing a glue stick into a film for output. The film can be covered on the outer peripheral wall of the compression and exhaust roller. The outer peripheral wall of the compression and exhaust roller is suitable for rolling contact with the outer peripheral wall of the tire blank. The rotation direction of the compression and exhaust roller is opposite to that of the tire blank, so that the film is pressed and wound around the tire blank; the rotary drive is transmission-connected to the rotary support to drive the base to rotate, so that the axial direction of the compression and exhaust roller can be adjusted to be consistent with the axial direction of the tire blank.
[0007] According to the tire tread sheet winding device of the embodiment of the present invention, the profile roller group and the pressure and exhaust roller are integrated on the same base, forming a compact integrated sheet winding structure, and the base is installed on the slewing support, and when the slewing support is driven by the slewing drive, the profile roller group and the pressure and exhaust roller are driven by the base to rotate synchronously relative to the tire blank, so as to ensure that the outer peripheral wall of the pressure and exhaust roller is tightly pressed with the tire blank, and at the same time, the profile roller group can directly enter between the pressure and exhaust roller and the tire blank after pressing the rubber stick into a rubber sheet, so that the rubber sheet is spirally wound on the tire blank to form a tire with a contour that meets the process requirements. Therefore, the use of the sheeting winding device can minimize the distance between the rubber stick sheeting process and the tread winding process, and can effectively avoid the tensile deformation caused by the long film conveying distance during the winding process, and the problem of defective products caused by air pockets due to low rubber temperature. The overall structure has high integration and small space occupancy. Therefore, compared with the related art, the present invention integrates the rubber stick sheeting process and the tread winding process in the tread winding molding process into one, so that the film can be reliably conveyed with a stable size when it is wrapped around the tread after being pressed out, thereby ensuring the winding accuracy of the tire tread.
[0008] In some embodiments, the profiling roller set includes a wall panel assembly, a first drive, a flat roller, and a profiling roller.
[0009] Wherein, the wall panel assembly is connected to the base, and the first drive is installed on the wall panel assembly;
[0010] Among them, the first drive is connected to at least one of the flat roller and the molding roller, the flat roller and the molding roller are arranged along the first direction and can be pivotally mounted on the wall panel assembly, the flat roller and the molding roller rotate at the same speed and their axial directions are consistent, the axial direction of the flat roller is perpendicular to the first direction, the outer peripheral wall of the molding roller is provided with a first annular recess, and the glue passage is defined between the first annular recess and the outer peripheral wall of the flat roller.
[0011] In some embodiments, the embossing roller group also includes a heat exchange tube, which is suitable for passing a heat exchange medium. At least one of the flat roller and the embossing roller has an installation cavity, and at least a portion of the heat exchange tube is located in the installation cavity to control the temperature of the flat roller or the embossing roller.
[0012] In some embodiments, the profiling roller group also includes an adjustment pad, the mounting end of the profiling roller is movably connected to the wall panel assembly, and the adjustment pad is clamped between the mounting end of the flat roller and the mounting end of the profiling roller to adjust the spacing between the flat roller and the profiling roller along the first direction.
[0013] In some embodiments, the sheet winding device also includes a width measuring sensor, which is installed on the wall panel assembly and arranged adjacent to the exit of the glue passage. The width measuring sensor is used to detect the width of the film so as to adjust the rotation speed of the flat roller and the molding roller according to the width information of the film.
[0014] In some embodiments, the sheet winding device also includes a second drive and an electronic cam controller, wherein the second drive is mounted on the base and is transmission-connected to the compression and exhaust roller, and the second drive is electrically connected to the electronic cam controller so that the electronic cam controller controls the working condition of the second drive so that the rotation speed of the compression and exhaust roller matches the rotation speed of the tire blank.
[0015] In some embodiments, the base is provided with a rotating shaft, the rotating shaft having a first flow channel and a second flow channel, one of the first flow channel and the second flow channel is suitable for introducing a heat exchange medium, and the other is suitable for discharging the heat exchange medium;
[0016] The compression and exhaust roller is a hollow structure with openings at both ends along its axial direction. The compression and exhaust roller is sleeved on the rotating shaft. At least one of the inner circumferential wall of the compression and exhaust roller and the outer circumferential wall of the rotating shaft is provided with a second annular recess. The first flow channel and the second flow channel are both connected to the second annular recess to facilitate heat exchange and temperature control of the compression and exhaust roller.
[0017] In some embodiments, a first seal is further disposed between the inner circumferential wall of the air compression roller and the outer circumferential wall of the rotating shaft, and the first seal is located between the second annular recess and the base along the axial direction of the rotating shaft.
[0018] In some embodiments, there are two second annular recesses and they are arranged at intervals along the axial direction of the rotating shaft. Among the two second annular recesses, one second annular recess is connected to the first flow channel, and the other second annular recess is connected to the second flow channel.
[0019] In some embodiments, a second seal is further provided between the two second annular recesses, and the second seal is sandwiched between the inner circumferential wall of the compression and exhaust roller and the outer circumferential wall of the rotating shaft.
[0020] In some embodiments, the base includes a first vertical plate and a second vertical plate arranged opposite to each other along the axial direction of the air compression roller, a receiving cavity is defined between the first vertical plate and the second vertical plate, and the air compression roller is pivotally mounted in the receiving cavity;
[0021] The rotating shaft is located in the accommodating cavity, the first end of the rotating shaft is connected to the first vertical plate and the second end is abutted against the second vertical plate, the second vertical plate is provided with a first orifice connected to the first flow channel and a second orifice connected to the second flow channel, one of the first orifice and the second orifice is suitable for communicating with a heat exchange medium source, and the other is suitable for communicating with the outside, and a third sealing member is further sandwiched between the second vertical plate and the second end of the rotating shaft so that the third sealing member seals the contact gap between the second vertical plate and the second end of the rotating shaft to prevent leakage of the heat exchange medium.
[0022] In some embodiments, the sheeting winding device further includes a glue pressing mechanism, which includes a mounting seat, a telescopic cylinder and a glue pressing roller, wherein the mounting seat is connected to the base, a cylinder body of the telescopic cylinder is mounted on the mounting seat, and a piston rod of the telescopic cylinder is connected to the glue pressing roller;
[0023] The rubber pressing roller has a first position spaced apart from the outer peripheral wall of the air compression roller and a second position pressed against the outer peripheral wall of the air compression roller. The telescopic cylinder can push and pull the rubber pressing roller to switch between the first position and the second position to adjust the distance between the outer peripheral wall of the rubber pressing roller and the outer peripheral wall of the air compression roller.
[0024] In some embodiments, the glue pressing mechanism also includes a flip arm, the cylinder body of the telescopic cylinder is connected to the flip arm, the flip arm is pivotally connected to the mounting seat and has an avoidance position and a working position, when the flip arm is in the avoidance position, the glue pressing roller and the air compression roller are arranged along the axial direction of the air compression roller, and when the flip arm is working, the glue pressing roller and the air compression roller are arranged along the radial direction of the air compression roller.
[0025] In some embodiments, the glue pressing mechanism further includes a locking assembly, which can lock the flip arm and the mounting seat when the flip arm is pivoted to any position relative to the mounting seat.
[0026] In some embodiments, the locking assembly includes a latch and a lever, the mounting seat is provided with a first socket, the latch is connected to the mounting seat via a hanging chain and is suitable for slidingly fitting with the first socket; the lever is slidably connected to the flip arm and has an unlocking position spaced apart from the latch and a locking position pressed against the latch, the flip arm is provided with a second socket, when the flip arm is switched from the avoidance position to the working position, at least a portion of the latch can be slidably fitted in the second socket, and the lever can slide from the unlocking position to the locking position relative to the flip arm to lock the flip arm on the mounting seat.
[0027] In some embodiments, the sheet winding device also includes a base, a movable seat and a linear drive, the base is connected to the rotary support, the movable seat is slidably mounted on the base and connected to the base, and the linear drive is mounted on the base and transmission-connected to the movable seat so as to adjust the distance between the outer peripheral wall of the compression and exhaust roller and the outer peripheral wall of the tire blank.
[0028] In some embodiments, the linear drive includes a drive cylinder and a linear guide rail, the cylinder body of the drive cylinder and the linear guide rail are both connected to the base, and the movable seat is slidably connected to the linear guide rail and connected to the piston rod of the drive cylinder.
[0029] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 1 is a schematic structural diagram of a tire tread sheet winding device according to an embodiment of the present invention.
[0031] Figure 2 The figure is a schematic diagram of the connection structure between the rotary support and the rotary drive in the tire tread sheet winding device according to an embodiment of the present invention.
[0032] Figure 3 The figure is a schematic cross-sectional view of a profiling roller group in a tire tread sheet winding device according to an embodiment of the present invention.
[0033] Figure 4 The invention is a schematic diagram of the connection structure of a base, a compression and exhaust roller and a second drive in a tire tread compression sheet winding device according to an embodiment of the present invention.
[0034] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure.
[0035] Figure 6 1 is a diagram showing the use status of a rubber pressing mechanism in a tire tread sheet winding device according to an embodiment of the present invention when the rubber pressing mechanism is in an avoidance position.
[0036] Figure 7 1 is a diagram showing the use status of a glue pressing mechanism in a tire tread sheet winding device according to an embodiment of the present invention when the glue pressing mechanism is in a working position.
[0037] Figure 8 It is a schematic diagram of the connection structure of a base, a movable seat and a linear drive in a tire tread sheet winding device according to an embodiment of the present invention.
[0038] Figure numerals: 1, pressing roller group, 11, base, 111, rotating shaft, 112, first flow channel, 113, second flow channel, 114, first vertical plate, 115, second vertical plate, 116, accommodating cavity, 12, glue passage, 13, wall panel assembly, 14, first drive, 15, flat roller, 151, installation cavity, 16, forming roller, 161, first annular recess, 17, heat exchange tube, 18, adjustment pad, 2, compression and exhaust roller, 21, Second drive, 22. Second annular recess, 23. First seal, 24. Second seal, 3. Rotary support, 4. Rotary drive, 5. Film, 6. Glue pressing mechanism, 61. Mounting seat, 62. Telescopic cylinder, 63. Glue pressing roller, 64. Flip arm, 65. Locking assembly, 651. Latch, 652. Push rod, 653. Chain, 7. Base, 8. Moving seat, 9. Linear drive, 91. Drive cylinder, 92. Linear guide. DETAILED DESCRIPTION
[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0040] like Figure 1 and Figure 2 As shown, the tire tread sheet winding device of the embodiment of the present invention comprises a profile roller group 1, a compression and exhaust roller 2, a slewing support 3 and a slewing drive 4. The profile roller group 1 and the compression and exhaust roller 2 are both pivotally mounted on the slewing support 3 through a base 11 and the directions of the pivot axes of the two are consistent. The profile roller group 1 is arranged adjacent to the outer peripheral wall of the compression and exhaust roller 2 and has a glue passing channel 12. The glue passing channel 12 is suitable for pressing a glue stick into a film 5 for output. The film 5 can be wrapped around the outer peripheral wall of the compression and exhaust roller 2. The outer peripheral wall of the compression and exhaust roller 2 is suitable for rolling contact with the outer peripheral wall of the tire blank. The rotation direction of the compression and exhaust roller 2 is opposite to that of the tire blank, so that the film 5 is pressed and wound around the tire blank; the slewing drive 4 is transmission-connected to the slewing support 3 to drive the base 11 to rotate, so that the axial direction of the compression and exhaust roller 2 can be adjusted to be consistent with the axial direction of the tire blank.
[0041] It can be understood that, according to the tire tread sheet winding device of the embodiment of the present invention, the profile roller group 1 and the compression and exhaust roller 2 are integrated on the same base 11, forming a compact integrated sheet winding structure, and the base 11 is installed on the slewing support 3, and when the slewing drive 4 drives the slewing support 3, the profile roller group 1 and the compression and exhaust roller 2 can be driven by the base 11 to rotate synchronously relative to the tire blank, so as to ensure that the outer peripheral wall of the compression and exhaust roller 2 is tightly pressed with the tire blank, and at the same time, after the profile roller group 1 presses the rubber stick into a rubber sheet 5, it can directly enter between the compression and exhaust roller 2 and the tire blank, so that the rubber sheet 5 is spirally wound on the tire blank. The tread is formed with a contour that meets the process requirements. Therefore, the use of the sheeting winding device can minimize the distance between the rubber stick sheeting process and the tread winding process, and can effectively avoid the tensile deformation caused by the long conveying distance of the film 5 during the winding process, and the problem of defective products easily caused by air pockets due to low rubber temperature. The overall structure has high integration and small space occupancy. Therefore, compared with the relevant technology, the present invention integrates the rubber stick sheeting process and the tread winding process in the tread winding molding process into one, so that the film 5 can be reliably conveyed with a stable size when it is wrapped around the tread after being pressed out, thereby ensuring the winding accuracy of the tire tread.
[0042] Specifically, the axial direction of the embossing roller set 1 and the axial direction of the compression and exhaust roller 2 can be consistent. The rotary support 3, the compression and exhaust roller 2 and the embossing roller set 1 can be arranged in sequence from bottom to top, further improving the structural compactness of the sheet winding device. The base 11 can extend in the height direction. The glue passage 12 can be connected with the extruder unit so that the glue stick can enter the glue passage 12 and be pressed into a film 5 for output.
[0043] It should be noted that the width range of the calendered film 5 in the present invention can be 20-30 mm, wherein the width of the film 5 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 in the numerical range are also applicable; the thickness range of the calendered film 5 in the present invention can be 1-2 mm, wherein the thickness of the film 5 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 in the numerical range are also applicable. In addition, the present invention is suitable for the molding of high-performance tires in an online or offline manner. The extruded film 5 in the present invention adopts the aforementioned size design, and the tread profile of the winding molding will not exceed the tread profile size range of the high-performance tire, and the width, thickness and weight accuracy of the tread profile of the winding molding also meet the process requirements of the high-performance tire.
[0044] like Figure 3 As shown, in some embodiments, the profiling roller set 1 includes a wall panel assembly 13 , a first drive 14 , a flat roller 15 and a profiling roller 16 .
[0045] The wall panel assembly 13 is connected to the base 11 , and the first drive 14 is installed on the wall panel assembly 13 .
[0046] The first drive 14 is connected to at least one of the flat roller 15 and the mold roller 16 in a transmission manner. The flat roller 15 and the mold roller 16 are arranged along the first direction and can be pivotally mounted on the wall panel assembly 13. The flat roller 15 and the mold roller 16 rotate at the same speed and their axial directions are consistent. The axial direction of the flat roller 15 is perpendicular to the first direction. The outer peripheral wall of the mold roller 16 is provided with a first annular recess 161. The first annular recess 161 and the outer peripheral wall of the flat roller 15 define a glue passage 12. The first annular recess 161 can be coaxial with the mold roller 16.
[0047] It can be understood that, by cooperating with the first drive 14, the flat roller 15 and the shaping roller 16, the rubber stick can be pressed into a rubber sheet 5 for output after entering the glue passage 12 to meet the subsequent tread winding requirements.
[0048] Specifically, the wall panel assembly 13 may include a first wall panel and a second wall panel arranged at intervals along the axial direction of the flat roller 15. The flat roller 15 and the mold roller 16 each have a connected mounting end and a roller body, the roller body can be pivotally mounted between the first wall panel and the second wall panel, there are two mounting ends and they are arranged on two opposite sides of the roller body along the axial direction of the flat roller 15, one of the mounting ends is connected to the first wall panel through a bearing seat, and the other mounting end is connected to the second wall panel through a bearing seat. A baffle can also be installed on the outer side of each of the first wall panel and the second wall panel (that is, the wall surface of each of the first wall panel and the second wall panel away from the roller body), so that the baffle can ensure that the flat roller 15 and the mold roller 16 will not move axially. The first drive 14 can be connected to the flat roller 15 in a transmission manner, and the flat roller 15 is connected to the mold roller 16 in a transmission manner; or, the first drive 14 can be connected to the mold roller 16 in a transmission manner, and the mold roller 16 is connected to the flat roller 15 in a transmission manner; or, the first drive 14 is connected to both the flat roller 15 and the mold roller 16 in a transmission manner. The first drive 14 is not limited to a servo motor. Taking the figure as an example, a driving gear can be installed at the output end of the motor shaft of the servo motor, and driven gears can be sleeved on the mounting ends of the flat roller 15 and the forming roller 16. The driving gear and the driven gear of the flat roller 15 are externally meshed for transmission, and the driven gear of the flat roller 15 and the driven gear of the forming roller 16 are externally meshed for transmission, so that the servo motor drives the flat roller 15 and the forming roller 16 to rotate synchronously, thereby realizing the dynamic response of the two.
[0049] In addition, in order to quickly change the width and thickness of the film 5, the mold roller 16 and its bearing seat can be combined into an integral mold roller 16 assembly through a bearing installation, so that the mold roller 16 assembly is detachably connected to the wall panel assembly 13. When the size of the extruded film 5 needs to be changed, the integral mold roller 16 assembly can be quickly pulled out from the wall panel assembly 13 and replaced with a new mold roller 16 assembly.
[0050] like Figure 3As shown, in some embodiments, the profiling roller set 1 further includes a heat exchange tube 17, which is suitable for passing a heat exchange medium, and at least one of the flat roller 15 and the profiling roller 16 has a mounting cavity 151, that is, the flat roller 15 has the mounting cavity 151, or the profiling roller 16 has the mounting cavity 151, or both the flat roller 15 and the profiling roller 16 have the mounting cavity 151. At least part of the heat exchange tube 17 is located in the mounting cavity 151 to exchange heat and control the temperature of the flat roller 15 or the profiling roller 16.
[0051] It is understandable that the addition of the heat exchange tube 17 structure can effectively avoid the problem of rubber burning caused by the extruded rubber 5 being too high in temperature, or the problem of rubber blockage caused by the rubber 5 being too low in temperature when the intermittent winding is restarted, so as to achieve temperature control of the rubber 5 and further improve the tread winding quality.
[0052] Specifically, the heat exchange medium may not be limited to temperature-controlled water or temperature-controlled gas. The heat exchange tube 17 may be connected to temperature-controlled water through a rotary joint to cool the film 5 during the winding process or to heat the film 5 when the winding stops. The heat exchange tube 17 may have a spray hole connected to the installation cavity 151. There may be multiple spray holes that are arranged at intervals on the part of the heat exchange tube 17 located in the installation cavity 151, so that the heat exchange tube 17 can pass temperature-controlled water into the installation cavity 151 to achieve temperature regulation of the flat roller 15 or the molding roller 16. Alternatively, the heat exchange tube 17 may contact the inner wall surface of the installation cavity 151 to generate heat transfer to achieve temperature regulation of the flat roller 15 or the molding roller 16.
[0053] like Figure 3 As shown, in some embodiments, the embossing roller group 1 also includes an adjustment pad 18, and the mounting end of the molding roller 16 is movably connected to the wall panel assembly 13. The adjustment pad 18 is clamped between the mounting end of the flat roller 15 and the mounting end of the molding roller 16 to adjust the spacing between the flat roller 15 and the molding roller 16 along the first direction, so as to effectively avoid the problem that the gap between the two is too small and the roller bodies are easily worn, thereby reducing the service life, or the gap between the two is too large, resulting in flash defects in the extruded film 5.
[0054] It should be noted that during installation, a feeler gauge can be used to check so that the gap between the outer surfaces of the roller bodies of the flat roller 15 and the shaped roller 16 is within 2 μm. If the gap is too small, the thickness of the adjustable pad 18 is increased, and if the gap is too large, the thickness of the adjustable pad 18 is reduced.
[0055] In some embodiments, the sheet winding device also includes a width measuring sensor (not shown in the figure), which is installed on the wall panel assembly 13 and arranged adjacent to the exit of the glue passage 12. The width measuring sensor is used to detect the width of the film 5 so as to adjust the rotation speed of the flat roller 15 and the molding roller 16 according to the width information of the film 5.
[0056] It should be noted that, during the tire tread winding process, the linear speed of the flat roller 15 is used as the reference speed, wherein the rotation speed of the extruder screw is controlled by the width measurement feedback system and the floating roller arranged behind the glue supply head, to ensure that the diameter of the extruded rubber rod is maintained within the standard diameter accuracy range, so as to ensure the stability of the glue supply to the sheet winding device, and the width measurement sensor at the outlet of the glue passage 12 can detect the width of the pressed film 5, so as to simultaneously control the linear speeds of the flat roller 15 and the forming roller 16 according to the width measurement feedback signal, thereby ensuring the width stability of the extruded film 5. In addition, the speed of the compression and exhaust roller 2 dynamically follows the reference speed in a linear relationship to avoid stretching, deformation and blockage of the film 5 from the embossing roller group 1 to the compression and exhaust roller 2. At the same time, the linear speed of the tire embryo is also based on the reference speed. The speed adjustment of the servo motor that drives the tire embryo to rotate can adopt electronic cam technology. By driving the encoder of the servo motor that drives the tire embryo to rotate, the circumferential position of the tire embryo can be monitored in real time. By adjusting the speed of the tire embryo, its linear speed is made consistent with the linear speed of the compression and exhaust roller 2 to avoid stretching, deformation and blockage of the film 5 between the compression and exhaust roller 2 and the tire embryo.
[0057] like Figure 4 and Figure 5 As shown, in some embodiments, the sheet winding device further includes a second drive 21 and an electronic cam controller (not shown in the figure), the second drive 21 is mounted on the base 11 and is transmission-connected to the compression and exhaust roller 2, and the second drive 21 is electrically connected to the electronic cam controller, so that the electronic cam controller controls the working condition of the second drive 21, so that the rotation speed of the compression and exhaust roller 2 matches the rotation speed of the tire blank, and the rotation speed of the compression and exhaust roller 2 is automatically controlled, and the electronic cam technology improves the response speed and accuracy, and the problem of unevenness during the transition of the winding layer is also solved. The second drive 21 may not be limited to using a servo motor.
[0058] It should be noted that, in the related art, the pressure exhaust roller 2 in the tread winding of high-performance tires is generally a non-powered structure, while the present invention adopts an electronic cam technology motion following method to achieve that the linear velocity of the outer surface of the pressure exhaust roller 2 is completely consistent with the linear velocity of the outer surface of the tire embryo driven by the servo, so that multi-layer winding turns and tread shoulder arc winding can achieve a smooth transition, effectively avoiding the problem of excessive tread contour dimensions caused by rubber accumulation.
[0059] like Figure 4 and Figure 5 As shown, in some embodiments, the base 11 is provided with a rotating shaft 111, and the rotating shaft 111 has a first flow channel 112 and a second flow channel 113, one of the first flow channel 112 and the second flow channel 113 is suitable for introducing the heat exchange medium (i.e., water inlet), and the other is suitable for discharging the heat exchange medium (i.e., water return).
[0060] The air-exhaust roller 2 is a hollow structure with openings at both ends along its axial direction. The air-exhaust roller 2 is sleeved on the rotating shaft 111. At least one of the inner circumferential wall of the air-exhaust roller 2 and the outer circumferential wall of the rotating shaft 111 is provided with a second annular recess 22. The first flow channel 112 and the second flow channel 113 are both connected to the second annular recess 22 to facilitate heat exchange and temperature control of the air-exhaust roller 2. It can cool the temperature of the film 5 during high-speed winding and heat the temperature of the film 5 when the winding is stopped by switching specifications.
[0061] Specifically, the inner circumferential wall of the compression and exhaust roller 2 is provided with a second annular recess 22, and the second annular recess 22 and the outer circumferential wall of the rotating shaft 111 together constitute an annular heat exchange groove; or the outer circumferential wall of the rotating shaft 111 is provided with a second annular recess 22, and the second annular recess 22 and the inner circumferential wall of the compression and exhaust roller 2 together constitute an annular heat exchange groove; or the inner circumferential wall of the compression and exhaust roller 2 and the outer circumferential wall of the rotating shaft 111 are both provided with a second annular recess 22, and the second annular recesses 22 of the two are coaxial, and the second annular recesses 22 of the two together constitute an annular heat exchange groove.
[0062] like Figure 4 and Figure 5 As shown, in some embodiments, a first seal 23 is sandwiched between the inner circumferential wall of the compression and exhaust roller 2 and the outer circumferential wall of the rotating shaft 111. The first seal 23 is located between the second annular recess 22 and the base 11 along the axial direction of the rotating shaft 111. The first seal 23 is not limited to a rotary seal.
[0063] Furthermore, there are two second annular recesses 22 which are spaced apart along the axial direction of the rotating shaft 111 . Of the two second annular recesses 22 , one second annular recess 22 is connected to the first flow channel 112 , and the other second annular recess 22 is connected to the second flow channel 113 .
[0064] Furthermore, a second seal 24 is provided between the two second annular recesses 22, and the second seal 24 is sandwiched between the inner circumferential wall of the compression and exhaust roller 2 and the outer circumferential wall of the rotating shaft 111 to prevent internal leakage of the inlet and return water. The second seal 24 is not limited to a rotary seal.
[0065] like Figure 4 and Figure 5 As shown, in some embodiments, the base 11 includes a first vertical plate 114 and a second vertical plate 115 arranged relatively along the axial direction of the air compression roller 2, and a receiving cavity 116 is defined between the first vertical plate 114 and the second vertical plate 115, and the air compression roller 2 can be pivotally mounted in the receiving cavity 116.
[0066] The rotating shaft 111 is located in the accommodating cavity 116, the first end of the rotating shaft 111 is connected to the first vertical plate 114 and the second end is abutted against the second vertical plate 115, the second vertical plate 115 is provided with a first orifice connected to the first flow channel 112 and a second orifice connected to the second flow channel 113, one of the first orifice and the second orifice is suitable for communicating with a heat exchange medium source, and the other is suitable for communicating with the outside, and a third sealing member is further sandwiched between the second vertical plate 115 and the second end of the rotating shaft 111, so that the third sealing member seals the contact gap between the second vertical plate 115 and the second end of the rotating shaft 111 to prevent leakage of the heat exchange medium.
[0067] Specifically, the third sealing member is not limited to using an O-ring. The first orifice and the second orifice may be respectively disposed at the 0° and 180° positions of the annular heat exchange groove.
[0068] like Figure 6 and Figure 7 As shown, in some embodiments, the sheet pressing and winding device also includes a glue pressing mechanism 6, which includes a mounting seat 61, a telescopic cylinder 62 and a glue pressing roller 63. The mounting seat 61 is connected to the base 11, the cylinder body of the telescopic cylinder 62 is installed on the mounting seat 61, and the piston rod of the telescopic cylinder 62 is connected to the glue pressing roller 63.
[0069] The rubber pressing roller 63 has a first position separated from the outer peripheral wall of the air compression and exhaust roller 2 and a second position pressed against the outer peripheral wall of the air compression and exhaust roller 2. The telescopic cylinder 62 can push and pull the rubber pressing roller 63 to switch between the first position and the second position to adjust the distance between the outer peripheral wall of the rubber pressing roller 63 and the outer peripheral wall of the air compression and exhaust roller 2.
[0070] It can be understood that in order to avoid the problem of manual cutting of the tail of the film 5 at the end of winding and manual pulling of the film 5 onto the tire blank when switching the tire blank, the sheet pressing winding device is additionally provided with a glue pressing mechanism 6. When the winding of one tire blank is completed, the telescopic cylinder 62 drives the glue pressing roller 63 to extend, pressing the film 5 against the roller surface of the compression and exhaust roller 2, so that the compression and exhaust roller 2 stops rotating, and the tire blank continues to rotate until the film 5 is pulled off to complete the winding of the current tire blank. The sheet pressing winding device returns to the waiting position. When the double-station tread winding workstation rotates to switch to another prepared tire blank, the sheet pressing winding device goes to the working position, and the compression and exhaust roller 2 drives the film 5 located on the upper surface of its roller body to directly adhere to the tire blank, and the tread winding of another tire blank is started. With the assistance of the glue pressing mechanism 6 and the electrical control of the compression and exhaust roller 2, fully automated production can be achieved when the tire blank is switched.
[0071] like Figure 6 and Figure 7As shown, in some embodiments, the glue pressing mechanism 6 also includes a flip arm 64, the cylinder body of the telescopic cylinder 62 is connected to the flip arm 64, the flip arm 64 is pivotally connected to the mounting seat 61 and has an avoidance position and a working position, when the flip arm 64 is in the avoidance position, the glue pressing roller 63 and the air compression roller 2 are arranged along the axial direction of the air compression roller 2, and when the flip arm 64 is working, the glue pressing roller 63 and the air compression roller 2 are arranged along the radial direction of the air compression roller 2.
[0072] It can be understood that, by adopting the above-mentioned structural design, the flip arm 64 can be manually flipped so that the rubber pressing roller 63 is located next to the air pressing roller 2, leaving operating space for the first operation of manually pulling the film 5 from the embossing roller group 1 to the upper surface of the roller body of the air pressing roller 2. After completing the layout of the film 5 on the upper surface of the air pressing roller 2, the flip arm 64 is reset, which is convenient for operation.
[0073] like Figure 6 and Figure 7 As shown, in some embodiments, the glue pressing mechanism 6 further includes a locking assembly 65 , and the locking assembly 65 can lock the flip arm 64 and the mounting seat 61 when the flip arm 64 pivots to any position relative to the mounting seat 61 .
[0074] like Figure 6 and Figure 7 As shown, in some embodiments, the locking assembly 65 includes a latch 651 and a lever 652, the mounting seat 61 is provided with a first socket, the latch 651 is connected to the mounting seat 61 through a hanging chain 653 and is suitable for slidingly matching with the first socket; the lever 652 is slidably connected to the flip arm 64 and has an unlocking position spaced from the latch 651 and a locking position pressed against the latch 651, the flip arm 64 is provided with a second socket, when the flip arm 64 switches from the avoidance position to the working position, the first socket and the second socket are coaxially arranged, at least a portion of the latch 651 can be slidably matched with the second socket, and the lever 652 can slide from the unlocking position to the locking position relative to the flip arm 64 along the radial direction of the compression and exhaust roller 2, so as to lock the flip arm 64 on the mounting seat 61, thereby ensuring the accurate reliability of the working position of the rubber pressing roller 63.
[0075] like Figure 8 As shown, in some embodiments, the sheet winding device also includes a base 7, a movable seat 8 and a linear drive 9. The base 7 is connected to the rotary support 3, the movable seat 8 is slidably mounted on the base 7 and is connected to the base 11, the linear drive 9 is mounted on the base 7 and is transmission-connected to the movable seat 8, and the linear drive 9 can push and pull the movable seat 8 to extend or retract relative to the base 7, so as to adjust the distance between the outer peripheral wall of the compression and exhaust roller 2 on the base 11 and the outer peripheral wall of the tire blank, adapt to the change of the winding thickness of the tire blank, so that the compression and exhaust roller 2 is in close rolling contact with the tire blank, and the air between the film 5 and the tire blank is emptied when the film 5 is wound on the tire blank.
[0076] Further, the linear drive 9 includes a drive cylinder 91 and a linear guide 92, the cylinder body of the drive cylinder 91 and the linear guide 92 are both connected to the base 7, and the movable seat 8 is slidably connected to the linear guide 92 and connected to the piston rod of the drive cylinder 91. The drive cylinder 91 may be one of a pneumatic cylinder, a hydraulic cylinder, an electric cylinder and an oil cylinder.
[0077] It should be noted that the working process of the sheeting winding device in the tread winding and molding process is as follows: the round rubber stick extruded by the extruder is transported to the sheeting winding device through the floating roller assembly, and the rubber stick is squeezed by the flat roller 15 and the molding roller 16 to extrude an arc-shaped rubber sheet 5, which is directly transported to the upper surface of the compression and exhaust roller 2. When the sheeting winding device and its rubber sheet 5 are close to the winding position in the middle of the tire embryo until they contact each other, the servo motor drives the tire embryo to rotate clockwise, and the second drive 21 drives the compression and exhaust roller 2 to rotate counterclockwise, and the rubber sheet 5 located on the upper surface of the compression and exhaust roller 2 adheres to the outer surface of the tire embryo, and the rubber sheet 5 is spirally wound around the outer surface of the tire embryo. When it is wound around the shoulder of the tire embryo, the sheeting winding device moves and rotates relative to the tire embryo to ensure that the compression and exhaust roller 2 is perpendicular to the tangent direction of the outer surface of the tire embryo at any position of the tread winding. The sheet winding device moves and rotates relative to the tire embryo in coordination to spirally wind the film 5 onto the arc-shaped outer surface of the tire embryo. The moving pitch and rotation speed of the sheet winding device relative to the tire embryo are automatically set by the upper computer based on the tread contour size and the reference speed after calculation. When it is wound to the extreme position on one side of the tire embryo, the sheet winding device moves in the opposite direction and rotates back to the tire embryo shoulder position on that side, and continues to move to the winding starting position in the middle of the tire embryo until it reaches the tire shoulder position on the other side of the tire embryo. The sheet winding device spirally winds the film 5 onto the arc-shaped outer surface on the other side of the tire embryo through the mutual coordination of moving and rotating movements relative to the tire embryo. When it is wound to the extreme position on the other side of the tire embryo, the sheet winding device moves in the opposite direction and rotates back to the tire embryo shoulder position on the other side again, until it returns to the winding starting position in the middle of the tire embryo, and the spiral winding of the tire embryo in a single layer is completed. During the entire winding process, the linear speed of the outer surface of the tire embryo dynamically follows the linear speed of the outer surface of the compression and exhaust roller 2 to avoid stretching deformation and blockage of the film 5. Generally, the winding effect is best when the thickness of the single layer is 3 to 5 mm. When the winding tread profile is thicker, the compression winding device moves back and forth in sequence until the multi-layer winding is completed. The specific number of winding layers is manually set in the upper computer interface.
[0078] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0081] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0082] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0083] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.
Claims
1. A tire tread sheeting winding device, characterized in that: include: A profile roller group, a compression and exhaust roller and a slewing support, wherein the profile roller group and the compression and exhaust roller are both pivotally mounted on the slewing support through a base and the directions of the pivot axes of the two are consistent, the profile roller group is arranged adjacent to the outer peripheral wall of the compression and exhaust roller and has a glue passage, the glue passage is suitable for pressing a glue stick into a film for output, the film can be covered on the outer peripheral wall of the compression and exhaust roller, the outer peripheral wall of the compression and exhaust roller is suitable for rolling contact with the outer peripheral wall of the tire blank, and the rotation direction of the compression and exhaust roller is opposite to that of the tire blank, so that the film is tightly wrapped around the tire blank; as well as The rotary drive is connected to the rotary support transmission to drive the base to rotate, so that the axial direction of the compression and exhaust roller can be adjusted to be consistent with the axial direction of the tire blank.
2. The tire tread sheet winding device according to claim 1, characterized in that: The pressing roller group comprises: a wall panel assembly and a first drive, the wall panel assembly being connected to the base, the first drive being mounted on the wall panel assembly; and A flat roller and a molding roller, the first drive is connected to at least one of the flat roller and the molding roller, the flat roller and the molding roller are arranged along a first direction and can be pivotally mounted on the wall panel assembly, the flat roller and the molding roller rotate at the same speed and their axial directions are consistent, the axial direction of the flat roller is perpendicular to the first direction, the outer peripheral wall of the molding roller is provided with a first annular recess, and the first annular recess and the outer peripheral wall of the flat roller define the glue passage.
3. The tire tread sheet winding device according to claim 2, characterized in that: The pressing roller group also includes: A heat exchange tube, wherein the heat exchange tube is suitable for passing a heat exchange medium, at least one of the flat roller and the profile roller has a mounting cavity, and at least part of the heat exchange tube is located in the mounting cavity to control the temperature of the flat roller or the profile roller; and / or An adjusting pad, the mounting end of the molding roller is movably connected to the wall panel assembly, and the adjusting pad is clamped between the mounting end of the flat roller and the mounting end of the molding roller to adjust the spacing between the flat roller and the molding roller along the first direction.
4. The tire tread sheet winding device according to any one of claims 1 to 3, characterized in that: It also includes a width measuring sensor, which is installed on the wall panel assembly and arranged adjacent to the outlet of the glue passage. The width measuring sensor is used to detect the width of the film so as to adjust the rotation speed of the flat roller and the molding roller according to the width information of the film.
5. The tire tread sheet winding device according to claim 1, characterized in that: It also includes a second drive and an electronic cam controller. The second drive is installed on the base and is connected to the compression and exhaust roller transmission. The second drive is electrically connected to the electronic cam controller so that the electronic cam controller can control the working condition of the second drive to match the rotation speed of the compression and exhaust roller with the rotation speed of the tire blank.
6. The tire tread sheet winding device according to claim 1 or 5, characterized in that: The base is provided with a rotating shaft, and the rotating shaft has a first flow channel and a second flow channel, one of the first flow channel and the second flow channel is suitable for introducing a heat exchange medium, and the other is suitable for discharging the heat exchange medium; The compression and exhaust roller is a hollow structure with openings at both ends along its axial direction. The compression and exhaust roller is sleeved on the rotating shaft. At least one of the inner circumferential wall of the compression and exhaust roller and the outer circumferential wall of the rotating shaft is provided with a second annular recess. The first flow channel and the second flow channel are both connected to the second annular recess to facilitate heat exchange and temperature control of the compression and exhaust roller.
7. The tire tread sheet winding device according to claim 6, characterized in that: A first sealing member is further disposed between the inner peripheral wall of the compression and exhaust roller and the outer peripheral wall of the rotating shaft, and the first sealing member is located between the second annular recess and the base along the axial direction of the rotating shaft; And / or, there are two second annular recesses and they are spaced apart along the axial direction of the rotating shaft, and one of the two second annular recesses is communicated with the first flow channel, and the other second annular recess is communicated with the second flow channel; And / or, a second sealing member is further provided between the two second annular recesses, and the second sealing member is sandwiched between the inner peripheral wall of the compression and exhaust roller and the outer peripheral wall of the rotating shaft.
8. The tire tread sheet winding device according to claim 1, characterized in that: It also includes a glue pressing mechanism, which includes a mounting seat, a telescopic cylinder and a glue pressing roller, wherein the mounting seat is connected to the base, a cylinder body of the telescopic cylinder is installed on the mounting seat, and a piston rod of the telescopic cylinder is connected to the glue pressing roller; The rubber pressing roller has a first position spaced apart from the outer peripheral wall of the air compression roller and a second position pressed against the outer peripheral wall of the air compression roller. The telescopic cylinder can push and pull the rubber pressing roller to switch between the first position and the second position to adjust the distance between the outer peripheral wall of the rubber pressing roller and the outer peripheral wall of the air compression roller.
9. The tire tread sheet winding device according to claim 8, characterized in that: The glue pressing mechanism also includes: A flip arm, wherein the cylinder body of the telescopic cylinder is connected to the flip arm, the flip arm is pivotally connected to the mounting seat and has an avoidance position and a working position, when the flip arm is in the avoidance position, the rubber pressing roller and the air pressing roller are arranged along the axial direction of the air pressing roller, and when the flip arm is working, the rubber pressing roller and the air pressing roller are arranged along the radial direction of the air pressing roller; and / or A locking assembly is capable of locking the flip arm and the mounting seat when the flip arm is pivoted to any position relative to the mounting seat.
10. The tire tread sheet winding device according to claim 1, characterized in that: It also includes a base, a movable seat and a linear drive, the base is connected to the rotary support, the movable seat is slidably installed on the base and connected to the base, and the linear drive is installed on the base and transmission-connected to the movable seat so as to adjust the distance between the outer peripheral wall of the compression and exhaust roller and the outer peripheral wall of the tire blank.