A tire building apparatus and method

Abstract

The application relates to the technical field of tire production equipment, in particular to a tire embryo bead part puncture device and a use method thereof. The tire embryo bead part puncture device comprises a rack, a rotating shaft rotatably arranged at the center of the rack, a rotating driving mechanism connected below the rotating shaft to intermittently rotate the rotating shaft, and an extension rod connected above the rotating shaft, wherein the extension rod can radially extend and retract under control, a free end of the extension rod is connected with a puncture mechanism, the puncture mechanism comprises a double-head air cylinder arranged vertically, and two piston rods of the double-head air cylinder are respectively connected with puncture needles. The tire embryo bead part puncture device provided by the application has high puncture success rate, good puncture effect and good puncture stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tire production equipment, and particularly relates to a tire blank bead part puncture device and a use method thereof. BACKGROUND

[0002] In the processing and molding process of radial tires, the bead part (i.e. the sub-port part) has many breakpoints, so that air bubbles are easily generated at the bead part when the tire blank is attached and molded. The existence of air bubbles will affect the service life and driving safety of the tire. Therefore, after the tire blank is attached and molded, puncturing needs to be performed on the bead part. In the subsequent tire blank vulcanization molding process, the air bubbles will flow out of the hole along with the rubber material.

[0003] A patent with the authorized announcement number CN 112976151 B discloses a tire blank sub-port puncture device. The device includes a power mechanism, a rotating mechanism for driving the tire blank to rotate, and a puncture mechanism for puncturing the sub-port of the tire blank. The puncture mechanism includes a rack, a female sliding block, a male sliding block, a cam, a first bevel gear, and an action arm. A puncture needle is installed on the action arm. The action arm is connected with the female sliding block. The female sliding block is installed in a sliding groove in the rack. The male sliding block is connected with the female sliding block in a sliding pair. The cam is hinged with the male sliding block. The cam is coaxially connected with the first bevel gear. The power mechanism is connected with a second bevel gear. The second bevel gear is engaged with the first bevel gear. The power mechanism drives the second bevel gear to drive the puncture mechanism to complete the puncture of the sub-port of the tire blank. The device can improve the uniformity of the puncture of the tire blank, thereby improving the quality of the tire blank and the finished tire. However, the above technical solution has the following problems. First, during the puncture process, the tire blank is in a rotating state. When the puncture needle punctures the tire blank, the puncture needle is very easy to slip, which causes the puncture needle to fail to completely puncture the tire blank. In addition, the tire blank is elastic. When the puncture needle penetrates into the tire blank from the outside, the sub-port part of the tire blank is easy to shrink inward under the pushing of the puncture needle. The slippage of the puncture needle and the shrinkage of the tire blank both easily cause incomplete puncture or puncture failure, which reduces the puncture success rate and the puncture effect. Second, when the puncture needle penetrates into and separates from the tire blank, there is a friction force between the puncture needle and the tire blank, which generates a pushing and pulling force on the tire blank, which easily causes the tire to fall off from the rotating mechanism, thereby reducing the puncture stability and the puncture efficiency. Therefore, it is urgent to provide a tire blank puncture device with high puncture success rate, good puncture effect, and good puncture stability. SUMMARY

[0004] To solve the above technical problems, the application provides a tire blank bead part puncture device, which comprises a rack, a rotating shaft rotatably arranged at the center of the rack, a rotating drive mechanism connected to the rotating shaft below for intermittently rotating the rotating shaft, and an extension rod connected to the rotating shaft above, wherein the extension rod can radially extend and retract under control, and the free end of the extension rod is connected to a puncture mechanism, and the puncture mechanism comprises a double-head cylinder arranged vertically, and the upper and lower piston rods of the double-head cylinder are respectively connected to puncture needles.

[0005] Preferably, the rack comprises a table top, a plurality of vertical columns arranged at the lower end surface of the table top, a base connected to the lower end surface of the vertical columns, a central hole arranged at the center of the rack for the rotating shaft to pass through, and a plurality of needle grooves corresponding to the puncture needles arranged at the upper end surface of the rack around the central hole at equal intervals.

[0006] Preferably, the rotating drive mechanism comprises a mounting frame connected to the rack, a first servo motor arranged on the mounting frame, a half gear arranged at the output end of the first servo motor, and a first gear arranged on the rotating shaft, wherein the half gear is engaged with the first gear, and the rotating shaft is rotatably arranged on the mounting frame; the mounting frame comprises a lifting platform and a plurality of vertical guide rods slidingly penetrating the lifting platform, and the lower end surface of the lifting platform is connected to a hydraulic cylinder, and the vertical guide rods and the hydraulic cylinder are fixed on the rack.

[0007] Preferably, the extension rod comprises a rectangular mounting seat arranged at the upper end surface of the rotating shaft, a second servo motor arranged at the top of the mounting seat, an internally threaded cylinder and a threaded rod rotatably arranged horizontally on the side wall of the mounting seat in threaded cooperation, wherein the threaded rod slidingly penetrates the mounting seat along the radial line direction of the rotating shaft and is connected to the puncture mechanism, and the output end of the second servo motor is provided with a second gear, and the outer side wall of the internally threaded cylinder is provided with a third gear engaged with the second gear.

[0008] Preferably, the double-head cylinder is connected to the extension rod through a “[”-shaped puncture frame, and the upper and lower ends of the puncture frame are symmetrically provided with inner baffles located inside the tire blank, wherein the inner baffles comprise inner vertical plates connected to the puncture frame and inner horizontal plates connected perpendicularly to the inner vertical plates, and the inner horizontal plates are provided with inner needle holes for the puncture needles to pass through, and in the initial state, the needle tips of the puncture needles are accommodated in the inner needle holes.

[0009] Preferably, the inner baffles at the upper end of the puncture frame are provided with outer baffles located outside the tire blank, wherein the outer baffles comprise outer vertical plates arranged on the inner horizontal plates near one side of the rotating shaft and outer horizontal plates connected perpendicularly to the outer vertical plates, and the outer horizontal plates are provided with outer needle holes for the puncture needles to pass through.

[0010] Preferably, the upper and lower ends of the puncture frame are respectively provided with an insertion block, a plurality of first positioning holes are vertically and equidistantly arranged on the side wall of the insertion block, the lower end surface of the inner vertical plate is provided with an insertion slot matched with the insertion block, the insertion slot is provided with a second positioning hole, and a bolt-nut assembly connects the insertion block and the inner vertical plate through the first positioning hole and the second positioning hole; and the inner side wall of the inner needle hole is provided with a lubricant ring capable of lubricating the puncture needle.

[0011] Preferably, the gantry is provided with a centering mechanism, the centering mechanism comprises a plurality of centering plates which are circumferentially and equidistantly arranged on the upper end surface of the table top, and a displacement driving mechanism which drives the centering plates to move synchronously and reciprocally along the radial line of the rotating shaft.

[0012] Preferably, the displacement driving mechanism comprises a first bevel gear rotatably arranged on the lower end surface of the table top and coaxial with the rotating shaft, a plurality of second bevel gears meshing with the first bevel gear, a mounting plate fixedly arranged on the lower end surface of the table top, a horizontal lead screw rotatably arranged on the mounting plate and connected with the second bevel gears, a third servo motor arranged on one mounting plate and driving the horizontal lead screw to rotate, a nut seat arranged on the horizontal lead screw and connected with the centering plates, and the table top is provided with a sliding hole through which the centering plates pass.

[0013] The application provides a use method of a tire blank bead part puncture device.

[0014] In step S1, the rotating driving mechanism, the telescopic rod and the puncture mechanism are connected with the controller; the tire blanks to be punctured are stacked beside the puncture device, and the tire blanks are placed in the center of the gantry by the mechanical hand so that the tire blanks are coaxial with the rotating shaft.

[0015] In step S2, the telescopic rod is controlled to be elongated, the puncture needles are driven to move towards the inside of the tire blank, and the puncture needles are aligned with the bead parts.

[0016] In step S3, the upper and lower piston rods of the double-head pneumatic cylinder are controlled to be elongated, the upper and lower puncture needles are used to puncture the bead parts of the tire blank from inside to outside, then the upper and lower piston rods of the double-head pneumatic cylinder are controlled to be shortened, the upper and lower puncture needles are separated from the bead parts of the tire blank, and are reset to the initial state, and one puncture is completed.

[0017] In step S4, the rotating driving mechanism drives the rotating shaft to rotate, the puncture mechanism is rotated to the next puncture position, and then stopped.

[0018] In step S5, the steps S3 and S4 are repeated to puncture the bead parts of the tire blank, the puncture needles are rotated to the initial position along with the rotating shaft, and the puncture is completed.

[0019] In step S6, the tire blank is taken from the gantry by the mechanical hand, and a new tire blank is placed for the next puncture.

[0020] Compared with the prior art, the present application has the following beneficial technical effects:

[0021] 1、 The puncture mechanism of the present application can puncture the tire from the inside of the tire body to the outside of the tire bead part through the cooperation of the telescopic rod, double-head cylinder and puncture needle, improving the puncture effect. The rotation driving mechanism drives the rotation of the shaft and the puncture mechanism intermittently to ensure that there is no relative rotation between the tire body and the puncture needle during puncture, improving the stability and efficiency of puncture.

[0022] 2、 The second servo motor of the telescopic rod drives the rotation of the inner threaded cylinder through the gear meshing transmission structure, and the inner threaded cylinder drives the telescopic screw rod that is threadedly connected therewith, so as to accurately control the telescopic amount of the screw rod and improve the puncture accuracy.

[0023] 3、 The rotation driving mechanism drives the intermittent rotation of the shaft through the intermittent meshing of the half gear and the first gear. The first servo motor is always in a rotating state, which can realize the intermittent rotation of the shaft, avoid the frequent start and stop of the first servo motor, and improve the service life of the first servo motor. The hydraulic cylinder can drive the lifting of the mounting bracket and the shaft installed thereon, adjust the position of the puncture mechanism, and make the distance between the upper and lower puncture needles in the puncture mechanism and the tire bead part consistent, so as to ensure that the extension distance of the piston rod of the double-head cylinder is the shortest during puncture, improving the puncture efficiency. In addition, the hydraulic cylinder can flexibly adjust the height of the puncture mechanism to adapt to the puncture requirements of different models of tire bodies, and has a wide range of applications.

[0024] 4、 The inner baffle of the puncture mechanism can block the tendency of the tire body to move inward during puncture. When the puncture needle is retracted into the inner needle hole on the inner baffle, it can be completely separated from the tire body, avoiding the situation that the puncture needle cannot be separated from the tire body due to friction, and improving the stability of puncture.

[0025] 5、 The rack can block the tendency of the tire bead part below to move outward, and the outer baffle can block the tendency of the tire bead part above to move outward, so as to ensure that the puncture needle can quickly pierce the tire bead part and improve the puncture efficiency.

[0026] 6、 The puncture frame and the inner baffle are detachably connected, and the bolt and nut assembly can connect and fix the first positioning hole on the inner vertical plate and the second positioning hole of different heights on the plug, so as to adjust the height of the inner baffle to adapt to the puncture requirements of different models of tire bodies, and improve the application range of the puncture device.

[0027] 7、 The inner needle hole on the inner baffle is provided with a lubricant ring, which can lubricate the puncture needle, reduce the friction between the puncture needle and the tire body, and improve the puncture efficiency.

[0028] 8. The centering mechanism can correct the position of the tire blank, ensure the coaxiality of the tire blank and the rotating shaft, avoid the problem of position deviation of the puncture caused by the placement deviation of the tire blank, and improve the accuracy of the puncture; in addition, the centering plate also has the clamping and fixing effect on the tire blank, and can further improve the stability of the puncture;

[0029] 9. The displacement driving mechanism of the centering mechanism can drive several centering plates to move synchronously through a third servo motor, so that the number of motors used is reduced;

[0030] In summary, the tire blank bead area puncture device provided by the application has high puncture success rate, good puncture effect and good puncture stability. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the application;

[0032] Figure 2 It is a structural schematic diagram of the rack;

[0033] Figure 3 It is a structural schematic diagram of the rotating driving mechanism;

[0034] Figure 4 It is a structural schematic diagram of the telescopic rod;

[0035] Figure 5 It is a structural schematic diagram of the puncture mechanism;

[0036] Figure 6 It is a structural schematic diagram of the puncture frame;

[0037] Figure 7 It is a sectional view of the inner baffle plate;

[0038] Figure 8 It is a structural schematic diagram of the outer baffle plate;

[0039] Figure 9 It is a structural schematic diagram of the centering mechanism;

[0040] Figure 10 It is a structural schematic diagram of the working state of the application.

[0041] Explanation of reference numerals 1. stand, 11. table, 111. center hole, 112. needle groove, 113. sliding hole, 12. column, 13. base, 2. rotating shaft, 3. rotation drive mechanism, 31. mounting frame, 311. lifting platform, 312. vertical guide rod, 32. first servo motor, 33. half gear, 34. first gear, 35. hydraulic cylinder, 4. telescopic rod, 41. mounting base, 42. second servo motor, 43. internal threaded cylinder, 44. threaded rod, 45. second gear, 46. third gear, 5. puncture mechanism, 51. puncture frame, 511. plug block, 512. First positioning hole, 52, double-headed cylinder, 53, puncturing needle, 54, inner baffle, 541, inner vertical plate, 542, inner horizontal plate, 543, inner needle hole, 544, slot, 545, second positioning hole, 546, bolt and nut assembly, 547, lubricant ring, 55, outer baffle, 551, outer vertical plate, 552, outer horizontal plate, 553, outer needle hole, 6, centering mechanism, 61, centering plate, 62, displacement drive mechanism, 621, first bevel gear, 622, second bevel gear, 623, mounting plate, 624, horizontal screw rod, 625, third servo motor, 626, nut seat. DETAILED DESCRIPTION

[0042] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0043] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0044] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content. Example 1

[0045] Combined with attachment Figures 1-10 The present embodiment provides a puncturing device for the embryonic bead of a tire, comprising a stand 1, a rotating shaft 2 rotatably provided at the center of the stand 1, a rotating drive mechanism 3 for driving the rotating shaft 2 to rotate intermittently connected to the bottom of the rotating shaft 2, and a telescopic rod 4 connected to the top. The telescopic rod 4 can be radially extended and retracted under control, and its free end is connected to a puncturing mechanism 5, and the puncturing mechanism 5 includes a vertically arranged double-headed cylinder 52, and the upper and lower piston rods of the double-headed cylinder 52 are respectively connected to a puncturing needle 53.

[0046] In the above technical solution, the rotary drive mechanism 3 includes but is not limited to conventional rotary drive parts such as motors and rotary cylinders; the telescopic rod 4 includes but is not limited to conventional telescopic parts such as electric telescopic rods or electromagnetic telescopic rods. In the initial state, the telescopic rod 4 is in a retracted state to facilitate the placement of the tire; when in use, ① the rotary drive mechanism 3, the telescopic rod 4 and the puncturing mechanism 5 are connected to the controller; the tire blanks to be punctured are stacked and placed next to the puncturing device, and the tire blanks are grabbed by the manipulator and placed in the center of the stand 1 so that the tire blanks are coaxial with the rotating shaft 2; ② the telescopic rod 4 is controlled to extend to drive the puncturing needle 53 to move toward the inside of the tire blank until the puncturing needle 53 is aligned with the tire bead; ③ the double The upper and lower piston rods of the head cylinder 52 are extended, and the upper and lower puncturing needles 53 puncture the bead part of the tire embryo from the inside to the outside, and then the upper and lower piston rods of the double-head cylinder 52 are controlled to shorten, and the upper and lower puncturing needles 53 are withdrawn from the bead part of the tire embryo and reset to the initial state, completing one puncture; ④ the rotary drive mechanism 3 drives the rotating shaft 2 to rotate, so that the puncturing mechanism 5 rotates to the next puncturing position and then stops; ⑤ repeat steps ③ and ④ to puncture the bead part of the tire embryo, and the puncturing needles 53 complete the puncture after rotating to the initial position with the rotating shaft 2; ⑥ remove the tire embryo from the stand 1 by the robot arm, and put in a new tire embryo for the next round of puncture.

[0047] In this embodiment, the telescopic rod 4, the double-headed cylinder 52 and the puncturing needle 53 cooperate with each other, so that holes can be punctured from the bead area inside the tire embryo to the outside, thereby improving the puncturing effect. The rotating drive mechanism 3 drives the rotating shaft 2 and the puncturing mechanism 5 to rotate intermittently to puncture the tire embryo, ensuring that there is no relative rotation between the tire embryo and the puncturing needle 53 during puncturing, thereby improving the puncturing stability and puncturing efficiency.

[0048] In a specific technical solution, the stand 1 includes a table top 11, and a plurality of columns 12 are provided on the lower end surface of the table top 11. The lower end surfaces of the columns 12 are connected to the base 13. A central hole 111 for the rotating shaft 2 to pass through is provided at the center of the stand 1, and a plurality of needle grooves 112 corresponding to the puncture needles 53 are provided at equal intervals on the upper end surface around the circumference of the central hole 111.

[0049] In the above technical solution, the puncture needle 53 at the lower end can be inserted into the needle groove 112 when pressed down to puncture, thereby preventing the puncture needle 53 from colliding with the stand 1 and being damaged.

[0050] In a specific technical solution, the rotation drive mechanism 3 includes a mounting frame 31 connected to the platform 1, a first servo motor 32 provided on the mounting frame 31, a half gear 33 provided at the output end of the first servo motor 32, and a first gear 34 provided on the rotating shaft 2, the half gear 33 is engaged with the first gear 34, and the rotating shaft 2 can be rotatably provided on the mounting frame 31; the mounting frame 31 includes a lifting platform 311 and several vertical guide rods 312 sliding through the lifting platform 311, the lower end surface of the lifting platform 311 is connected to the hydraulic cylinder 35, and the vertical guide rod 312 and the hydraulic cylinder 35 are fixed on the platform 1.

[0051] In the above technical solution, the teeth in the half gear 33 are only distributed within a 180° range of the gear circumference. When the teeth of the half gear 33 engage with the teeth of the first gear 34, the rotating shaft 2 is driven to rotate. When the teeth of the half gear 33 disengage from the teeth of the first gear 34, the rotating shaft 2 stops rotating, thereby realizing intermittent rotation of the rotating shaft 2. During use, the first servo motor 32 drives the half gear 33 to rotate continuously, and the intermittent engagement of the half gear 33 and the first gear 34 drives the rotating shaft 2 to rotate intermittently. The first servo motor 32 is always in a rotating state to realize the intermittent rotation of the rotating shaft 2, avoiding the frequent start and stop of the first servo motor 32 and improving the service life of the first servo motor 32; the hydraulic cylinder 35 can drive the mounting frame 31 and the rotating shaft 2 arranged on the mounting frame 31 to rise and fall, adjust the position of the puncturing mechanism 5, and make the distance between the upper and lower puncturing needles 53 in the puncturing mechanism 5 and the tire bead part consistent, so as to ensure that the distance required to extend the piston rod of the double-headed cylinder 52 during puncturing is the shortest, thereby improving the puncturing efficiency. In addition, the hydraulic cylinder 35 can flexibly adjust the height of the puncturing mechanism 5 to meet the puncturing requirements of tire blanks of different models, and has a wide range of applications.

[0052] In a specific technical solution, the telescopic rod 4 includes a rectangular mounting seat 41 provided on the upper end surface of the rotating shaft 2, a second servo motor 42 is provided on the top of the mounting seat 41, and the side wall is horizontally rotatable and provided with an internally threaded barrel 43 and a threaded rod 44 with threaded matching. The threaded rod 44 slides along the radial line direction of the rotating shaft 2 through the mounting seat 41 and is connected to the puncturing mechanism 5. The output end of the second servo motor 42 is provided with a second gear 45, and the outer side wall of the internally threaded barrel 43 is provided with a third gear 46 that meshes with the second gear 45.

[0053] In the above technical solution, the rotatable connection method between the internal threaded barrel 43 and the mounting seat 41 is not limited, and preferably a bearing is used for rotatable connection. The second servo motor 42 drives the internal threaded barrel 43 to rotate through a gear engagement transmission structure, and the internal threaded barrel 43 drives the threaded rod 44 that cooperates with its thread to extend and retract, which can accurately control the extension and retraction amount of the threaded rod 44 and improve the puncture accuracy.

[0054] In one specific technical solution, the double-head cylinder 52 is connected with the telescopic rod 4 through the "[ ]" shaped piercing frame 51, and the upper and lower ends of the piercing frame 51 are symmetrically provided with inner baffles 54 located inside the tire blank, the inner baffles 54 include inner vertical plates 541 connected with the piercing frame 51 and inner horizontal plates 542 connected with the inner vertical plates 541 perpendicularly, the inner horizontal plates 542 are provided with inner needle holes 543 for the piercing needles 53 to pass through, and in the initial state, the needle tips of the piercing needles 53 are accommodated in the inner needle holes 543.

[0055] In the above technical solution, the piercing frame 51 is connected with the telescopic rod 4, and in this embodiment, the piercing frame 51 is connected with the threaded rod 44 of the telescopic rod 4; the inner baffles 54 are located inside the tire blank, which means that the inner baffles 54 can be driven by the telescopic rod 4 to extend radially into the cavity inside the tire blank, and when the piercing needles 53 retract after piercing, the bead part of the tire blank will move inward under the action of friction, and the inner baffles 54 can block the tendency of the bead part of the tire blank to move inward, and when the piercing needles 53 retract into the inner needle holes 543 on the inner baffles 54, the piercing needles 53 can be completely separated from the tire blank, avoiding the situation that the piercing needles 53 cannot be separated from the tire blank due to friction, and improving the piercing stability.

[0056] In one specific technical solution, the inner baffles 54 on the upper end of the piercing frame 51 are provided with outer baffles 55 located outside the tire blank, the outer baffles 55 include outer vertical plates 551 provided on the inner horizontal plates 542 near one side of the rotating shaft 2 and outer horizontal plates 552 connected with the outer vertical plates 551 perpendicularly, and the outer horizontal plates 552 are provided with outer needle holes 553 for the piercing needles 53 to pass through.

[0057] In the above technical solution, the outer baffles 55 are located outside the tire blank, which means that the outer baffles 55 can be driven by the telescopic rod 4 to extend radially above the bead part outside the tire blank, and when the piercing needles 53 pierce the bead part, the piercing needles 53 will push the bead part to move outward due to the action of friction and elastic force, the rack 1 can block the tendency of the bead part below to move outward (i.e. downward), and the outer baffles 55 can block the tendency of the bead part above to move outward (i.e. upward), thereby ensuring that the upper and lower piercing needles 53 can quickly pierce the bead part and improving the piercing efficiency.

[0058] In one specific technical solution, the upper and lower ends of the puncture frame 51 are respectively provided with an insertion block 511, a plurality of first positioning holes 512 are vertically and equidistantly arranged on the side wall of the insertion block 511, the lower end surface of the inner vertical plate 541 is provided with an insertion slot 544 matched with the insertion block 511, the insertion slot 544 is provided with a second positioning hole 545, and a bolt-nut assembly 546 connects the insertion block 511 and the inner vertical plate 541 through the first positioning hole 512 and the second positioning hole 545; the inner side wall of the inner needle hole 543 is provided with a lubricant ring 547 capable of lubricating the puncture needle 53.

[0059] In the above technical solution, the puncture frame 51 and the inner baffle 54 are detachably inserted, the bolt-nut assembly 546 can connect and fix the first positioning hole 512 on the inner vertical plate 541 and the second positioning hole 545 on the insertion block 511 at different heights, thereby adjusting the height of the inner baffle 54 to meet the puncture needs of different models of tire blanks, and improving the application range of the puncture device; the lubricant ring 547 can be a sponge ring soaked in lubricating oil, a paraffin ring with self-lubricating effect, or any other material that can provide lubrication effect. The lubricant ring 547 arranged in the inner needle hole 543 can lubricate the puncture needle 53, reduce the friction between the puncture needle 53 and the tire blank, and improve the puncture efficiency.

[0060] In one specific technical solution, the gantry 1 is provided with a centering mechanism 6, the centering mechanism 6 includes a plurality of centering plates 61 circumferentially and equidistantly arranged on the upper end surface of the table top 11 around the rotating shaft 2, and a displacement driving mechanism 62 driving the centering plates 61 to move synchronously and reciprocally along the radial line of the rotating shaft 2.

[0061] In the above technical solution, the centering mechanism 6 can correct the position of the tire blank, ensure the coaxiality of the tire blank and the rotating shaft 2, and avoid the problem of puncture position deviation caused by the placement of the tire blank, thereby improving the accuracy of puncture. When in use, the displacement driving mechanism 62 synchronously drives a plurality of centering plates 61 (three in this embodiment) to move towards the rotating shaft 2 until all the centering plates 61 are in contact with the circumferential outer wall of the tire blank. At this time, the centering plates 61 also have a clamping and fixing effect on the tire blank, which can further improve the stability of puncture. The displacement driving mechanism 62 includes but is not limited to a cylinder assembly, a hydraulic cylinder assembly, and a lead screw nut assembly, etc.

[0062] In a specific technical solution, the displacement drive mechanism 62 includes a first bevel gear 621 rotatably provided on the lower end surface of the table 11 and coaxial with the rotating shaft 2, a plurality of second bevel gears 622 meshing with the first bevel gear 621, a mounting plate 623 fixedly provided on the lower end surface of the table 11, a horizontal screw rod 624 rotatably provided on the mounting plate 623 and connected to the second bevel gear 622, a third servo motor 625 provided on a mounting plate 623 for driving the horizontal screw rod 624 to rotate, a nut seat 626 provided on the horizontal screw rod 624 and connected to the centering plate 61, and a sliding hole 113 for the centering plate 61 to pass through is provided on the table 11.

[0063] In the above technical solution, the displacement drive mechanism 62 can drive several centering plates 61 to move synchronously through a third servo motor 625, reducing the number of motors used. When in use, the third servo motor 625 drives a horizontal screw rod 624 to rotate. The horizontal screw rod 624 drives the second bevel gear 622 connected to it to rotate. The second bevel gear 622 drives the first bevel gear 621 meshed with it to rotate. The first bevel gear 621 drives the remaining second bevel gears 622 meshed with it to rotate. The remaining second bevel gears 622 drive the horizontal screw rod 624 connected to it to rotate. As the several horizontal screw rods 624 rotate, the nut seat 626 matched with the horizontal screw rod 624 moves synchronously, and the nut seat 626 pushes the centering plates 61 connected to it to move synchronously. In this embodiment, the centering plate 61 includes a push plate located on the upper end surface of the table 11. The lower end surface of the push plate is fixed with a connecting plate. The connecting plate slides through the sliding hole 113 and is connected to the nut seat 626. The first bevel gear 621 can be rotatably connected to the table 11 in any suitable manner. In this embodiment, the first bevel gear 621 is fixed to the outer wall of the rotating drum, and then the rotating drum and the table 11 are rotatably connected through a bearing.

[0064] The working principle and working process of this embodiment are as follows: ① Connect the rotating drive mechanism 3, the telescopic rod 4, the puncturing mechanism 5 and the centering mechanism 6 to the controller; stack the tire blanks to be punctured and place them next to the puncturing device, grab the tire blanks by the manipulator and put them into the center of the stand 1, and the displacement drive mechanism 62 in the centering mechanism 6 drives the centering plates 61 to move closer to the rotating shaft 2 until all the centering plates 61 are in contact with the circumferential outer wall of the tire blank. At this time, the centering plates 61 clamp and fix the tire blank, and the tire blank is coaxial with the rotating shaft 2; ② Control the extension of the telescopic rod 4 to drive the puncturing needle 53 to move inside the tire blank until the puncturing needle 53 is aligned with the tire bead part; ③ Control the upper and lower piston rods of the double-headed cylinder 52 to extend, and the upper and lower puncturing needles 53 puncture the tire bead part from the inside to the outside. Puncture, the stand 1 blocks the tendency of the lower bead part to move outward, the outer baffle 55 blocks the tendency of the upper bead part to move outward, and then the upper and lower piston rods of the double-headed cylinder 52 are controlled to shorten, and the upper and lower puncture needles 53 are pulled out from the bead part of the tire embryo, and the inner baffle 54 blocks the tendency of the bead part to move inward. When the puncture needle 53 is received in the inner needle hole 543 of the inner baffle 54, it is reset to the initial state, completing a puncture; ④ the rotation drive mechanism 3 drives the rotating shaft 2 to rotate, so that the puncture mechanism 5 rotates to the next puncture position and then stops; ⑤ repeat steps ③ and ④ to puncture the bead part of the tire embryo, and the puncture needle 53 is completed after rotating to the initial position with the rotating shaft 2; ⑥ the tire embryo is removed from the stand 1 by the robot, and a new tire embryo is placed in for the next round of puncture. Example 2

[0065] Combined with attachment Figures 1-10 This embodiment provides a method for using a tire embryo bead puncture device. Using the tire embryo bead puncture device described in Example 1 includes the following steps:

[0066] Step S1, connecting the rotary drive mechanism 3, the telescopic rod 4 and the puncturing mechanism 5 to the controller; stacking the tire blanks to be punctured and placing them next to the puncturing device, grabbing the tire blanks by a manipulator and placing them in the center of the stand 1 so that the tire blanks are coaxial with the rotating shaft 2;

[0067] Step S2: controlling the telescopic rod 4 to extend, driving the puncture needle 53 to move into the tire blank until the puncture needle 53 is aligned with the tire bead;

[0068] Step S3: Control the upper and lower piston rods of the double-headed cylinder 52 to extend, and the upper and lower puncturing needles 53 puncture the bead portion of the tire blank from the inside to the outside. Then, control the upper and lower piston rods of the double-headed cylinder 52 to shorten, and the upper and lower puncturing needles 53 are withdrawn from the bead portion of the tire blank and reset to the initial state, completing one puncture.

[0069] Step S4, the rotation driving mechanism 3 drives the rotation of the rotation shaft 2, and the puncture mechanism 5 rotates to the next puncture position and then stops;

[0070] Step S5, the steps S3 and S4 are repeated to puncture the tire blank bead portion, and the puncture needle 53 rotates to the initial position with the rotation shaft 2 and then finishes the puncture;

[0071] Step S6, the tire blank is taken off from the rack 1 by the mechanical hand, and a new tire blank is put in for the next puncture.

[0072] The above embodiment is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above embodiment, and any change, modification, substitution, combination, simplification made without departing from the spirit and principle of the present application should be an equivalent replacement, which is included in the protection scope of the present application.

Claims

1. A tire embryo ring puncture device, comprising a stand (1), characterized in that: The center of the stand (1) is rotatably provided with a rotating shaft (2), the lower portion of the rotating shaft (2) is connected to a rotating drive mechanism (3) for driving the rotating shaft (2) to rotate intermittently, and the upper portion is connected to a telescopic rod (4), the telescopic rod (4) being capable of radially extending and contracting under control, and the free end of which is connected to a puncture mechanism (5), the puncture mechanism (5) comprising a vertically arranged double-headed cylinder (52), the upper and lower piston rods of the double-headed cylinder (52) being respectively connected to a puncture needle (53), the double-headed cylinder (52) being connected to a puncture needle (53), and the double-headed cylinder (52) being connected to a puncture needle (53) by a "[" shape. The puncture frame (51) is connected to the telescopic rod (4), and inner baffles (54) located inside the tire blank are symmetrically provided at the upper and lower ends of the puncture frame (51), and the inner baffles (54) include inner vertical plates (541) connected to the puncture frame (51) and inner horizontal plates (542) vertically connected to the inner vertical plates (541). The inner horizontal plates (542) are provided with inner needle holes (543) for the puncture needles (53) to pass through. In an initial state, the needle tips of the puncture needles (53) are received in the inner needle holes (543); The rotary drive mechanism (3) includes a mounting frame (31) connected to the platform (1), a first servo motor (32) provided on the mounting frame (31), a half gear (33) provided at the output end of the first servo motor (32), and a first gear (34) provided on the rotating shaft (2), wherein the half gear (33) is engaged with the first gear (34), and the rotating shaft (2) is rotatably provided on the mounting frame (31); the mounting frame (31) includes a lifting platform (311) and a plurality of vertical guide rods (312) slidingly passing through the lifting platform (311), the lower end surface of the lifting platform (311) is connected to a hydraulic cylinder (35), and the vertical guide rods (312) and the hydraulic cylinder (35) are fixed on the platform (1); An outer baffle (55) located outside the tire blank is provided on the inner baffle (54) at the upper end of the puncture frame (51), the outer baffle (55) comprising an outer vertical plate (551) provided on the inner horizontal plate (542) near the rotating shaft (2) and an outer horizontal plate (552) vertically connected to the outer vertical plate (551), and an outer needle hole (553) for the puncture needle (53) to pass through is provided on the outer horizontal plate (552); The upper and lower ends of the puncture frame (51) are respectively provided with an insert block (511), and a plurality of first positioning holes (512) are vertically and equidistantly provided on the side wall of the insert block (511). The lower end surface of the inner vertical plate (541) is provided with a slot (544) that cooperates with the insert block (511), and the slot (544) is provided with a second positioning hole (545). The bolt and nut assembly (546) connects the insert block (511) and the inner vertical plate (541) through the first positioning hole (512) and the second positioning hole (545); the inner side wall of the inner needle hole (543) is provided with a lubricant ring (547) that can lubricate the puncture needle (53).

2. A tire embryonic bead puncture device according to claim 1, characterized in that: The stand (1) comprises a table top (11), a lower end surface of the table top (11) is provided with a plurality of upright posts (12), the lower end surfaces of the upright posts (12) are connected to a base (13), a center hole (111) for the rotating shaft (2) to pass through is provided at the center of the stand (1), and a plurality of needle grooves (112) corresponding to the puncture needles (53) are provided at equal intervals on the upper end surface around the circumference of the center hole (111).

3. A tire embryonic bead puncture device according to claim 2, characterized in that: The telescopic rod (4) comprises a rectangular mounting seat (41) provided on the upper end surface of the rotating shaft (2); a second servo motor (42) is provided on the top of the mounting seat (41); a side wall thereof is horizontally rotatably provided with an internal threaded barrel (43) and a threaded rod (44) in threaded engagement; the threaded rod (44) is slid along the radial direction of the rotating shaft (2) and penetrates the mounting seat (41) and is then connected to the piercing mechanism (5); a second gear (45) is provided at the output end of the second servo motor (42); and a third gear (46) meshing with the second gear (45) is provided on the outer side wall of the internal threaded barrel (43).

4. A tire embryonic bead puncture device according to claim 3, characterized in that: The platform (1) is provided with a centering mechanism (6), which comprises a plurality of centering plates (61) equidistantly arranged on the upper end surface of the platform (11) around the circumference of the rotating shaft (2), and a displacement driving mechanism (62) for driving the centering plates (61) to synchronously reciprocate along the radial line of the rotating shaft (2).

5. A tire embryonic bead puncture device according to claim 4, characterized in that: The displacement drive mechanism (62) includes a first bevel gear (621) rotatably disposed on the lower end surface of the table (11) and coaxial with the rotating shaft (2), a plurality of second bevel gears (622) meshing with the first bevel gear (621), a mounting plate (623) fixedly disposed on the lower end surface of the table (11), a horizontal screw rod (624) rotatably disposed on the mounting plate (623) and connected to the second bevel gears (622), a third servo motor (625) disposed on a mounting plate (623) for driving the horizontal screw rod (624) to rotate, and a nut seat (626) disposed on the horizontal screw rod (624) and connected to the centering plate (61). The table (11) is provided with a sliding hole (113) for the centering plate (61) to pass through.

6. A method for using a tire bead puncture device, characterized in that: The method of using the tire embryo bead puncture device according to any one of claims 1 to 5 comprises the following steps: Step S1, connecting the rotary drive mechanism (3), the telescopic rod (4) and the puncturing mechanism (5) to the controller; stacking the tire blanks to be punctured and placing them next to the puncturing device; using a robot to grab the tire blanks and place them in the center of the stand (1) so that the tire blanks are coaxial with the rotating shaft (2); Step S2, controlling the telescopic rod (4) to extend, driving the puncture needle (53) to move toward the inside of the tire embryo until the puncture needle (53) is aligned with the tire bead; Step S3, controlling the upper and lower piston rods of the double-headed cylinder (52) to extend, and the upper and lower puncture needles (53) puncture the bead portion of the tire embryo from the inside to the outside, and then controlling the upper and lower piston rods of the double-headed cylinder (52) to shorten, and the upper and lower puncture needles (53) are withdrawn from the bead portion of the tire embryo and reset to the initial state, completing one puncture; Step S4, the rotation drive mechanism (3) drives the rotating shaft (2) to rotate, causing the puncturing mechanism (5) to rotate to the next puncturing position and then stop; Step S5, repeating steps S3 and S4 to puncture the tire embryo bead portion, and the puncturing needle (53) rotates to the initial position along with the rotating shaft (2) to complete the puncturing; Step S6: The tire blank is removed from the stand (1) by a robot arm, and a new tire blank is placed therein for the next round of puncturing.

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