A grinding device for tire mold production

Abstract

The present invention relates to the technical field of mold grinding, and discloses a grinding device for tire mold production, which includes a base. A processing disk for placing the tire mold is rotatably arranged on the base. A positioning mechanism is arranged at the axis center of the processing disk. A rotating mechanism for driving the processing disk to rotate is arranged inside the base. The rotating disk drives the processing disk to rotate and the processing disk has a rotational movement amount relative to the rotating disk. Two moving mechanisms are arranged on the base. A position-changing grinding mechanism and a positioning grinding mechanism are arranged on the moving mechanisms. The position-changing grinding mechanism includes a grinder I for grinding the bottom surface and the inner side surface of the tire mold. The positioning grinding mechanism includes a positioning member for positioning the edge of the pattern platform and a grinder II for grinding the outer side surface between adjacent pattern platforms. The present invention realizes the full-automatic and high-precision grinding of the tire mold. The adaptive grinding of the outer side surface between the pattern platforms is realized through the positioning grinding mechanism, and the rapid grinding of the continuous curved surface is realized through the position-changing grinding mechanism, thereby improving the grinding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mold grinding, and specifically refers to a grinding device for tire mold production. Background Art

[0002] As a key component in tire production, the surface accuracy of a tire mold directly affects the pattern quality and forming effect of the tire. To increase the friction with the ground, patterns are added to the tire surface, and the corresponding tire mold has pattern bosses. The pattern bosses divide the outer side of the tire mold into multiple sides. The complex texture structure inside the tire mold makes the grinding work complicated. The traditional tire mold grinding process mainly relies on manual operation. Due to the complex curved surface and pattern structure of the mold, manual grinding will affect the grinding consistency. The rigid clamping device for fixing the tire mold is likely to cause surface damage to the mold and is difficult to adapt to the rapid switching of different specifications of molds. A manipulator with multiple degrees of freedom can be used for grinding. Although the grinding accuracy is high, the grinding speed is slow, and different grinding heads need to be replaced during the grinding process, resulting in high costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a grinding device for tire mold production.

[0004] To solve the above technical problem, the technical solution provided by the present invention is: a grinding device for tire mold production, including a base. A processing disk for placing the tire mold is rotatably provided on the base, and a positioning mechanism is provided at the center of the axis of the processing disk;

[0005] A rotating mechanism for driving the processing disk to rotate is provided inside the base. The rotating mechanism includes a rotating disk that rotates inside the base. The rotating disk drives the processing disk to rotate and the processing disk has a rotational movement amount relative to the rotating disk;

[0006] Two moving mechanisms are provided on the base. Each moving mechanism includes a second motor, a rotating cylinder, a lifting arm, and a working arm. The second motor drives the rotating cylinder to rotate on the base, and the lifting arm moves up and down inside the rotating cylinder. A variable-position grinding mechanism and a positioning grinding mechanism are respectively provided on the two working arms. The variable-position grinding mechanism includes a grinder for grinding the bottom surface and the inner side surface of the tire mold. The positioning grinding mechanism includes a positioning member for positioning the edge of the pattern platform and a grinder for grinding the outer side surface between adjacent pattern platforms.

[0007] As an improvement: the positioning grinding mechanism further includes two adjusting arms. A positioning disk is provided at the end of the working arm of the moving mechanism corresponding to the positioning grinding mechanism. The two adjusting arms are hinged to the center of the axis of the positioning disk. The distances between the two adjusting arms and the working arm are equal. A moving table is movably provided on the adjusting arms. A connecting rod is provided at the bottom of the moving table. The bottoms of the two connecting rods are respectively connected to the positioning member and the grinder.

[0008] As an improvement: The positioning and grinding mechanism further includes an adjusting table slidably arranged on the working arm. One side of the moving table is hinged with an adjusting rod, and both adjusting rods are slidably matched with the bottom groove of the adjusting table. A tooth column is rotatably arranged in the bottom groove of the adjusting table, and racks meshing with the tooth column are arranged on both adjusting rods.

[0009] As an improvement: The positioning member includes an installation table. Two positioning wheels are rotatably arranged at the front end of the installation table. The positioning wheels are in rolling cooperation with the side of the pattern table. A ball table two is also rotatably arranged at the front end of the installation table. The ball table two is in rolling cooperation with the outer side. The grinding device two includes a grinding head two driven by a motor. The maximum distance between the outer edges of the two positioning wheels is equal to the diameter of the grinding head two.

[0010] As an improvement: A locking table is slidably arranged on the working arm. The locking table is fixed on the working arm by a tightening bolt. A detachable support rod is installed between the adjusting arm above the positioning member and the locking table.

[0011] As an improvement: A first annular groove is arranged at the top of the rotating disk. A plurality of fixing tables are evenly arranged in the first annular groove. Springs are arranged on both sides of the fixing table. A plurality of driving tables are evenly arranged at the bottom of the processing disk. The driving tables extend into the first annular groove and are connected with the springs on both sides.

[0012] As an improvement: The rotating mechanism further includes a locking mechanism, which realizes the conversion between the flexible connection and the rigid connection of the rotating disk and the processing disk.

[0013] As an improvement: The positioning mechanism includes a second cylinder, a lifting rod, a transmission rod and an inner support table. The second cylinder is fixed in the base. The lifting rod is slidably arranged at the axial through hole of the processing disk. The output end of the second cylinder is rotatably connected with the lifting rod. A plurality of inner support tables are slidably arranged along the radial direction in the top groove of the processing disk. Both ends of the transmission rod are respectively hinged with the top of the lifting rod and the inner support table. A positioning hole is arranged at the top of the lifting rod. A positioning shaft inserted and matched with the positioning hole is arranged at the bottom of the positioning disk.

[0014] As an improvement: The variable-position grinding mechanism further includes a moving arm moving on the working arm. The grinding device one is hinged at the bottom of the moving arm. A third cylinder for driving the grinding device one to rotate is arranged on the moving arm.

[0015] The beneficial effects of the present invention compared with the prior art are as follows: The present invention realizes the full automation and high-precision grinding of tire molds. The outer side between the pattern tables is adaptively ground through the positioning and grinding mechanism, and the continuous curved surface is quickly ground through the variable-position grinding mechanism, improving the grinding efficiency of tire molds. Specifically:

[0016] 1. The spring of the rotating mechanism connects the processing disk and the rotating disk, allowing the processing disk to finely adjust the angle during grinding, so that the pattern table always closely adheres to the positioning wheel. The locking mechanism quickly fixes the processing disk through the insertion post, switches the grinding mode, and adapts to the different grinding methods of the positioning and grinding mechanism and the variable-position grinding mechanism;

[0017] 2. The positioning and grinding mechanism is an adjustable structure, which can adapt to tire molds of different sizes and different pattern pitches, and can also adapt to different pattern forms. The grinding route is guided by positioning parts to grind the side and outer side of the pattern platform, with strong adaptability.

[0018] 3. There are two transmission forms between the processing disk and the rotating disk, which are switched through a locking mechanism. When in flexible connection, the processing disk can rotate a certain angle on the rotating disk and cooperate with the positioning and grinding mechanism to achieve precise positioning grinding. When in rigid connection, it cooperates with the displacement grinding mechanism to achieve rapid displacement grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention.

[0020] Figure 2 is a schematic diagram of the main structure of the present invention.

[0021] Figure 3 is an exploded view of the main structure of the present invention.

[0022] Figure 4 is a schematic structural diagram of the processing disk, rotating mechanism and positioning mechanism of the present invention.

[0023] Figure 5 is an exploded view of the processing disk, rotating mechanism and positioning mechanism of the present invention.

[0024] Figure 6 is a sectional view of the processing disk, rotating mechanism and positioning mechanism of the present invention.

[0025] Figure 7 is a schematic structural diagram of the processing disk of the present invention.

[0026] Figure 8 is a sectional view of the rotating mechanism of the present invention.

[0027] Figure 9 is an exploded view of the locking mechanism of the present invention.

[0028] Figure 10 is a schematic structural diagram of the moving mechanism and the displacement grinding mechanism of the present invention.

[0029] Figure 11 is an exploded view at the moving arm of the present invention.

[0030] Figure 12 is a schematic structural diagram of the moving mechanism and the positioning and grinding mechanism of the present invention.

[0031] Figure 13 is a schematic structural diagram of the positioning and grinding mechanism of the present invention.

[0032] Figure 14 It is the angular schematic diagram of the positioning and grinding mechanism of the present invention.

[0033] Figure 15 It is the dimensional relationship diagram between the second grinding head and the positioning wheel of the present invention.

[0034] Figure 16 It is the structural schematic diagram of the tire mold.

[0035] As shown in the figure: 0, tire mold; 01, outer side; 02, pattern table; 03, bottom surface; 04, inner side; 1, base; 2, processing disk; 3, rotating mechanism; 4, positioning mechanism; 5, moving mechanism; 6, variable-position grinding mechanism; 7, positioning and grinding mechanism; 21, driving table; 22, first locking hole; 31, first motor; 311, gear; 32, rotating disk; 321, toothed ring; 322, first annular groove; 323, fixed table; 324, second locking hole; 325, spring; 326, second annular groove; 33, locking mechanism; 331, first cylinder; 332, pushing table; 333, first spherical table; 334, annular table; 335, inserting column; 41, second cylinder; 42, lifting rod; 43, transmission rod; 44, inner supporting table; 45, positioning hole; 51, second motor; 52, rotating cylinder; 53, lifting arm; 54, working arm; 55, positioning disk; 56, positioning shaft; 61, third motor; 62, threaded rod; 63, moving arm; 64, first grinder; 641, first grinding head; 65, fixed rotating frame; 651, rotating arm; 66, third cylinder; 71, adjusting arm; 72, moving table; 73, adjusting table; 731, toothed column; 74, adjusting rod; 741, rack; 75, connecting rod; 76, positioning part; 761, mounting table; 762, positioning wheel; 763, second spherical table; 77, second grinder; 771, second grinding head; 78, locking position table; 79, supporting rod. Specific embodiments

[0036] The following further elaborates on the present invention in conjunction with the attached drawings.

[0037] Combined with the attached Figure 1 、attached Figure 2 and attached Figure 3As shown in the figure, to solve the above technical problems, the technical solution provided by the present invention is: a grinding device for tire mold production, including a base 1, on which a processing disk 2 for placing the tire mold 0 is rotatably provided. A positioning mechanism 4 is provided at the axis center of the processing disk 2. A rotating mechanism 3 for driving the processing disk 2 to rotate is provided inside the base 1. The rotating disk 32 drives the processing disk 2 to rotate and the processing disk 2 has a rotational movement amount relative to the rotating disk 32. Two moving mechanisms 5 are provided on the base 1. A displacement grinding mechanism 6 and a positioning grinding mechanism 7 are provided on the moving mechanism 5. The displacement grinding mechanism 6 includes a grinder 64 for grinding the bottom surface 03 and the inner side surface 04 of the tire mold 0. The positioning grinding mechanism 7 includes a positioning member 76 for positioning the edge of the pattern table 02 and a grinder 77 for grinding the outer side surface 01 between adjacent pattern tables 02.

[0038] Combined with the attached Figure 1 and the attached Figure 3 As shown in the figure, the moving mechanism 5 includes a second motor 51, a rotating cylinder 52, a lifting arm 53 and a working arm 54. The second motor 51 drives the rotating cylinder 52 to rotate on the base 1. The lifting arm 53 moves up and down inside the rotating cylinder 52. The lifting arm 53 rotates with the rotating cylinder 52. A cylinder for moving the lifting arm 53 is provided inside the rotating cylinder 52. The working arm 54 is provided outside the lifting arm 53. The displacement grinding mechanism 6 and the positioning grinding mechanism 7 are located on the two working arms 54.

[0039] Working principle of the moving mechanism 5: After the second motor 51 is started, it drives the rotating cylinder 52 to rotate around the axis of the base 1, thereby driving the internal lifting arm 53 and the external working arm 54 to rotate synchronously, realizing the azimuth adjustment in the horizontal direction. The cylinder inside the rotating cylinder 52 pushes the lifting arm 53 to move vertically inside the rotating cylinder, thereby adjusting the height of the working arm 54 to adapt to the grinding requirements at different positions. The lifting and rotating movements of the lifting arm 53 are combined, so that the displacement grinding mechanism 6 and the positioning grinding mechanism 7 fixed on the working arm 54 can flexibly reach the target position. After the grinding work is completed, the working arm 54 rotates away from above the tire mold 0, facilitating the removal of the tire mold 0.

[0040] Combined with the attached Figure 2 、the attached Figure 12 、the attached Figure 13 and the attached Figure 14As shown, the positioning and grinding mechanism 7 further includes two adjusting arms 71. A positioning disc 55 is provided at the end of the working arm 54 of the moving mechanism 5 corresponding to the positioning and grinding mechanism 7. The two adjusting arms 71 are hinged to the axis of the positioning disc 55. The distances between the two adjusting arms 71 and the working arm 54 are equal. A moving platform 72 is movably provided on the adjusting arm 71. The moving platform 72 moves radially along the axis of the tire mold 0 on the adjusting arm 71. A connecting rod 75 is provided at the bottom of the moving platform 72. The bottoms of the two connecting rods 75 are respectively connected to a positioning member 76 and a grinder II 77. The positioning and grinding mechanism 7 further includes an adjusting table 73 slidably provided on the working arm 54. One side of the moving platform 72 is hinged with an adjusting rod 74. The two adjusting rods 74 are both slidably engaged with the bottom groove of the adjusting table 73. The adjusting rod 74 is perpendicular to the working arm 54. A tooth column 731 is rotatably provided in the bottom groove of the adjusting table 73. Rack teeth 741 meshing with the tooth column 731 are provided on the two adjusting rods 74. A locking table 78 is slidably provided on the working arm 54. The locking table 78 is fixed to the working arm 54 by a tightening bolt. A detachable support rod 79 is installed on the adjusting arm 71 above the positioning member 76 and the locking table 78.

[0041] Working principle of the positioning and grinding mechanism 7: The positioning and grinding mechanism 7 realizes the radial movement and synchronous adjustment of the grinder II 77 and the positioning member 76 through the double adjusting arms 71 and the linkage adjustment system. The moving platform 72 is installed on the adjusting arm 71 and can move radially along the tire mold 0, so as to adjust the positions of the grinder II 77 and the positioning member 76. The adjusting table 73 is slidably installed on the working arm 54 and can move along the working arm, cooperating with the moving platform 72 to change the reference position of the adjusting arm 71. During adjustment, according to the size of the tire mold 0, the position of the positioning member 76 is determined, the adjusting table 73 is pushed and the angle of the adjusting arm 71 is rotated to move the positioning member 76 to the target position. During this process, the tooth column 731 meshes with the rack teeth 741 on the two adjusting rods 74, so that the moving distances of the two adjusting rods 74 are equal. Since the adjusting rod 74 is perpendicular to the working arm 54, the connection lines of the axis of the tire mold 0, the two adjusting rods 74 and the hinge axis of the moving platform 72 form an isosceles triangle structure. The distances between the two moving platforms 72 and the axis of the tire mold 0 are equal, so that the distances between the working ends of the grinder II 77 and the positioning member 76 and the tire mold 0 are equal. When the positioning point of the positioning member 76 is close to the outer side 01, the working end of the grinder II 77 is close to the outer side 01. After the adjustment is completed, first tighten the tightening bolt of the adjusting table 73 to fix the position of the adjusting table 73. Then adjust the position of the locking table 78, install the support rod 79 on the locking table 78 and the adjusting arm 71 above the positioning member 76. Then tighten the tightening bolt of the locking table 78 to fix the position of the locking table 78. The support rod 79 provides a supporting force for the adjusting arm 71. At this time, the adjustment of the positioning and grinding mechanism 7 is completed and the overall structure is fixed.

[0042] Combined with the attached Figure 13 、attached Figure 15 and attachedFigure 16 As shown, the positioning member 76 includes a mounting table 761. At the front end of the mounting table 761, two positioning wheels 762 are rotatably provided. The positioning wheels 762 are in rolling cooperation with the side of the pattern table 02. At the front end of the mounting table 761, a second ball table 763 is also rotatably provided. The second ball table 763 is in rolling cooperation with the outer side 01. The grinder 77 includes a grinding head 771 driven by a motor. The maximum distance between the outer edges of the two positioning wheels 762 is equal to the diameter of the grinding head 771.

[0043] The working principle of the cooperation between the positioning member 76 and the grinder 77: After the second ball table 763 contacts the outer side 01, the front end of the grinding head 771 also contacts the outer side 01 to grind the outer side 01. One of the positioning wheels 762 contacts the side of the pattern table 02, and the side of the grinding head 771 contacts the side of the other pattern table 02. During grinding, the moving mechanism 5 drives the positioning and grinding mechanism 7 to move up and down, and the rotating mechanism 3 drives the processing disk 2, so that the side of the pattern table 02 applies a certain force to the positioning wheel 762 to keep the positioning wheel 762 in close contact with the pattern table 02. During the up and down movement of the positioning wheel 762, the tire mold 0 rotates adaptively with the processing disk 2, so that the grinding head 771 grinds the side of the pattern table 02 and the outer side 01 along the shape of the pattern table 02. After grinding is completed, the adjacent pattern table 02 applies a force in the opposite direction to the other positioning wheel 762 for grinding, completing the grinding of one outer side 01 and the sides of the two pattern tables 02 on both sides. Subsequently, the positioning and grinding mechanism 7 is lifted. After the tire mold 0 rotates by a certain angle, the positioning and grinding mechanism 7 descends to grind another set of outer side 01 and the sides of the two pattern tables 02 on both sides.

[0044] Combined with attached Figure 1 、attached Figure 4 、attached Figure 5 、attached Figure 7 and attached Figure 8 As shown, the rotating mechanism 3 includes a first motor 31 and a rotating disk 32. A gear 311 is provided at the output end of the first motor 31. A toothed ring 321 meshing with the gear 311 is provided on the outer side of the rotating disk 32. The rotating disk 32 is rotatably provided inside the base 1 and is located below the processing disk 2. A first annular groove 322 is provided at the top of the rotating disk 32. A plurality of fixed platforms 323 are evenly provided in the first annular groove 322. Springs 325 are provided on both sides of the fixed platforms 323. A plurality of driving platforms 21 are evenly provided at the bottom of the processing disk 2. The driving platforms 21 extend into the first annular groove 322 and are connected to the springs 325 on both sides. The rotating mechanism 3 further includes a locking mechanism 33, and the locking mechanism 33 realizes the locking and unlocking of the rotating disk 32 and the processing disk 2.

[0045] Working principle of the rotating mechanism 3: The rotating mechanism 3 realizes the smooth rotation of the processing disk 2 through motor drive + elastic buffer structure, and has a certain flexible adjustment ability to meet the positioning and grinding requirements of the tire mold 0. After the motor 31 is started, the gear 311 at its output end meshes with the tooth ring 321 on the outer side of the rotating disk 32, driving the rotating disk 32 to rotate inside the base 1. When cooperating with the positioning and grinding mechanism 7 for grinding work, the rotating disk 32 and the processing disk 2 are flexibly connected by a spring 325. The processing disk 2 can rotate a certain angle on the rotating disk 32. After the side surface of the tread 02 of the tire mold 0 contacts the positioning wheel 762, the rotating disk 32 rotates a certain angle. At this time, the processing disk 2 does not rotate due to the blockage of the tread 02, and the spring 325 on one side of the driving platform 21 is compressed, making the processing disk 2 have a tendency to rotate. During the up and down movement of the positioning wheel 762, the spring 325 pushes the processing disk 2, making the tread 02 closely adhere to the positioning wheel 762. When cooperating with the variable-position grinding mechanism 6 for grinding, the rotating disk 32 and the processing disk 2 are locked by the rotating mechanism 3, and the processing disk 2 rotates following the rotating disk 32. The bottom surface 03 and the inner side surface 04 of the tire mold 0 are ground by the grinder 64.

[0046] Combined with the attached Figure 6 and the attached Figure 9 As shown, the rotating mechanism 3 further includes a locking mechanism 33. The locking mechanism 33 includes a cylinder 331 and a ring platform 334. The cylinder 331 is fixed inside the base 1. A push platform 332 is provided at the output end of the cylinder 331. A ball platform 333 is rotatably provided at the top of the push platform 332. A second ring groove 326 is provided at the bottom of the rotating disk 32. The ring platform 334 is arranged in the second ring groove 326. The ball platform 333 passes through the through hole at the bottom of the second ring groove 326 and is in rolling cooperation with the bottom of the ring platform 334. Locking holes 22 and 324 are respectively provided at the bottoms of the processing disk 2 and the fixed platform 323. An insertion post 335 is provided at the top of the ring platform 334. The insertion post 335 is located in the locking hole 324 and is in plug-in cooperation with the locking hole 22.

[0047] Working principle of the locking mechanism 33: The locking mechanism 33 is used to fix the position of the processing disk 2 when needed to prevent it from shifting during the grinding process, and at the same time does not affect the freedom of movement during normal rotation. In the unlocked state, the cylinder 331 is in the retracted state, driving the push platform 332 to move downward, so that the ball platform 333 is separated from the ring platform 334. The ring platform 334 moves slightly downward due to gravity, and the insertion post 335 at its top exits from the locking hole 22 of the processing disk 2, but still remains in the locking hole 324 of the fixed platform 323. At this time, the processing disk 2 and the rotating disk 32 are in a flexible connection state. In the locked state, the cylinder 331 extends, pushing the push platform 332 upward, so that the ball platform 333 jacks up the ring platform 334 upward. The ring platform 334 rises along the second ring groove 326, and the insertion post 335 at its top is inserted into the locking hole 22 and the locking hole 324 at the same time. At this time, the processing disk 2 and the rotating disk 32 are in a rigid connection state.

[0048] Combined with the attached Figure 6 and the attached Figure 12 As shown, the positioning mechanism 4 includes a second cylinder 41, a lifting rod 42, a transmission rod 43 and an inner support platform 44. The second cylinder 41 is fixed inside the base 1. The lifting rod 42 is slidably arranged at the axial through-hole of the processing disk 2. The output end of the second cylinder 41 is rotatably connected to the lifting rod 42. A plurality of inner support platforms 44 are slidably arranged in the top groove of the processing disk 2 along the radial direction. Both ends of the transmission rod 43 are respectively hinged to the top of the lifting rod 42 and the inner support platform 44. A positioning hole 45 is provided at the top of the lifting rod 42, and a positioning shaft 56 that is inserted and matched with the positioning hole 45 is provided at the bottom of the positioning disk 55.

[0049] Working principle of the positioning mechanism 4: The positioning mechanism 4 is mainly used for the rapid positioning and fixing of the tire mold 0. It ensures that the mold does not shift during the grinding process through inner support clamping. At the same time, it is linked with the positioning and grinding mechanism 7 to achieve precise alignment. When the second cylinder 41 is started, it pushes the lifting rod 42 to move upward along the axial through-hole of the processing disk 2. The lifting rod 42 drives a plurality of inner support platforms 44 to expand outward along the radial groove at the top of the processing disk 2 through the transmission rod 43, and presses against the inner wall of the tire mold 0 to achieve inner support fixing. The positioning hole 45 at the top of the lifting rod 42 is inserted and matched with the positioning shaft 56 at the bottom of the positioning disk 55, so that the positioning and grinding mechanism 7 is accurately centered with the processing disk 2, and the rotation axis of the adjusting arm 71 coincides with the axis of the tire mold 0, ensuring that the working axis of the second grinder 77 is perpendicular to the outer side 01.

[0050] Combined with the attached Figure 10 and the attached Figure 11 As shown, the variable-position grinding mechanism 6 further includes a third motor 61, a threaded rod 62 and a moving arm 63. The third motor 61 is fixed below the working arm 54. The third motor 61 drives the threaded rod 62 to rotate at the bottom of the working arm 54. The moving arm 63 is slidably arranged below the working arm 54. A threaded hole that cooperates with the threaded rod 62 is provided on the moving arm 63. The first grinder 64 includes a grinding head 641 driven by a motor. A fixed rotating frame 65 is hinged at the bottom of the moving arm 63. The motor of the first grinder 64 is fixed on the fixed rotating frame 65. A rotating arm 651 is provided on one side of the fixed rotating frame 65. A third cylinder 66 is hinged on the side of the moving arm 63, and the output end of the third cylinder 66 is hinged to the rotating arm 651.

[0051] Working principle of the position-changing grinding mechanism 6: The position-changing grinding mechanism 6 is mainly used for multi-angle position-changing grinding of the tire mold 0. The three-dimensional position adjustment and angle deflection of the grinding head 641 are realized through motor drive + cylinder adjustment to meet the processing requirements of complex curved surfaces. When the motor 61 starts, it drives the threaded rod 62 to rotate. The moving arm 63 meshes with the threaded rod 62 through the threaded hole at the bottom and slides horizontally along the bottom of the working arm 54 when the threaded rod 62 rotates, adjusting the lateral position of the grinder 64. The cylinder 66 pushes the rotating arm 651 to swing around the hinge point. Since the rotating arm 651 is rigidly connected to the fixed rotating frame 65 and the motor of the grinder 64 is fixed on the fixed rotating frame 65, the movement of the cylinder 66 will drive the grinding head 641 to deflect up and down around the hinge axis, changing the grinding angle, so as to adapt to the grinding of the continuous curved surface of the tire mold 0.

[0052] In the specific implementation of the present invention, the tire mold 0 is placed on the processing disk 2. The positioning mechanism 4 is used to make the rotation axis of the tire mold 0 coincide with the rotation axis of the processing disk 2. Subsequently, the moving mechanism 5 moves the positioning and grinding mechanism 7 above the tire mold 0 and inserts the positioning shaft 56 into the positioning hole 45, and adjusts the positioning and grinding mechanism 7 to adapt to the tire mold 0 on the processing disk 2. The processing disk 2 is flexibly connected to the rotating disk 32 of the rotating mechanism 3. The processing disk 2 is pushed to rotate on the rotating disk 32 by the positioning member 76, and the outer side 01 is ground by the grinder 77. The grinding position of the grinder 77 is changed by the rotation of the rotating disk 32. After the outer side 01 is ground, the processing disk 2 and the rotating disk 32 are locked by the locking mechanism 33. Subsequently, the moving mechanism 5 moves the position-changing grinding mechanism 6 above the tire mold 0, and the bottom surface 03 and the inner side 04 are ground by the position-changing grinding mechanism 6 with adjustable grinding position and angle. The rotating disk 32 drives the tire mold 0 to rotate through the processing disk 2, and rotates and grinds in cooperation with the position-changing grinding mechanism 6.

[0053] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A grinding device for tire mold production, comprising a base (1). A processing disk (2) for placing a tire mold (0) is rotatably provided on the base (1). A positioning mechanism (4) is provided at the axis center of the processing disk (2). It is characterized in that: A rotating mechanism (3) for driving the processing disk (2) to rotate is provided inside the base (1). The rotating mechanism (3) includes a rotating disk (32) that rotates inside the base (1). The rotating disk (32) drives the processing disk (2) to rotate and the processing disk (2) has a rotational movement amount relative to the rotating disk (32). A first annular groove (322) is provided at the top of the rotating disk (32). A plurality of fixed platforms (323) are evenly provided in the first annular groove (322). Springs (325) are provided on both sides of the fixed platform (323). A plurality of driving platforms (21) are evenly provided at the bottom of the processing disk (2). The driving platforms (21) extend into the first annular groove (322) and are connected to the springs (325) on both sides; Two moving mechanisms (5) are provided on the base (1). The moving mechanism (5) includes a second motor (51), a rotating cylinder (52), a lifting arm (53) and a working arm (54). The second motor (51) drives the rotating cylinder (52) to rotate on the base (1). The lifting arm (53) moves up and down inside the rotating cylinder (52). A variable-position grinding mechanism (6) and a positioning grinding mechanism (7) are respectively provided on the two working arms (54). The variable-position grinding mechanism (6) includes a first grinder (64) for grinding the bottom surface (03) and the inner side surface (04) of the tire mold (0). The positioning grinding mechanism (7) includes a positioning member (76) for positioning the edge of the tread platform (02) and a second grinder (77) for grinding the outer side surface (01) between adjacent tread platforms (02); The positioning grinding mechanism (7) further includes two adjusting arms (71). A positioning disk (55) is provided at the end of the working arm (54) of the moving mechanism (5) corresponding to the positioning grinding mechanism (7). The two adjusting arms (71) are hinged to the axis center of the positioning disk (55). The distances between the two adjusting arms (71) and the working arm (54) are equal. A moving platform (72) is movably provided on the adjusting arm (71). A connecting rod (75) is provided at the bottom of the moving platform (72). The bottoms of the two connecting rods (75) are respectively connected to the positioning member (76) and the second grinder (77); The positioning member (76) includes an installation platform (761). Two positioning wheels (762) are rotatably provided at the front end of the installation platform (761). The positioning wheels (762) are in rolling cooperation with the side of the tread platform (02). A second ball platform (763) is also rotatably provided at the front end of the installation platform (761). The second ball platform (763) is in rolling cooperation with the outer side surface (01). The second grinder (77) includes a grinding head two (771) driven by a motor. The maximum distance between the outer edges of the two positioning wheels (762) is equal to the diameter of the grinding head two (771).

2. A grinding device for tire mold production according to claim 1, characterized in that: The positioning and grinding mechanism (7) further includes an adjustment table (73) slidably arranged on the working arm (54). One side of the moving table (72) is hinged with an adjustment rod (74). Both adjustment rods (74) are slidably engaged with the bottom groove of the adjustment table (73). A toothed column (731) is rotatably arranged in the bottom groove of the adjustment table (73). Rack teeth (741) engaged with the toothed column (731) are arranged on both adjustment rods (74).

3. A grinding device for tire mold production according to claim 1, characterized in that: A locking table (78) is slidably arranged on the working arm (54). The locking table (78) is fixed to the working arm (54) by a tightening bolt. A detachable support rod (79) is installed between the adjustment arm (71) above the positioning member (76) and the locking table (78).

4. A grinding device for tire mold production according to claim 1, characterized in that: The rotating mechanism (3) further includes a locking mechanism (33). The locking mechanism (33) realizes the conversion between the flexible connection and the rigid connection of the rotating disk (32) and the processing disk (2).

5. A grinding device for tire mold production according to claim 1, characterized in that: The positioning mechanism (4) includes a second cylinder (41), a lifting rod (42), a transmission rod (43) and an inner support table (44). The second cylinder (41) is fixed inside the base (1). The lifting rod (42) is slidably arranged at the axial through hole of the processing disk (2). The output end of the second cylinder (41) is rotatably connected to the lifting rod (42). A plurality of inner support tables (44) are slidably arranged in the top groove of the processing disk (2) along the radial direction. Both ends of the transmission rod (43) are respectively hinged to the top of the lifting rod (42) and the inner support table (44). A positioning hole (45) is arranged at the top of the lifting rod (42). A positioning shaft (56) inserted and matched with the positioning hole (45) is arranged at the bottom of the positioning disk (55).

6. A grinding device for tire mold production according to claim 1, characterized in that: The position-changing grinding mechanism (6) further includes a moving arm (63) moving on the working arm (54). A first grinder (64) is hinged to the bottom of the moving arm (63). A third cylinder (66) for driving the first grinder (64) to rotate is arranged on the moving arm (63).

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