Beading mechanism for tire building

Abstract

The application discloses a turn-up mechanism for tire forming, which comprises a base, a rolling drum, a clamping device, a lower rolling device and a side rolling device, the rear side of the base is provided with a support plate, the rolling drum is rotationally connected to the support plate, the clamping device is arranged on the front side of the rolling drum, the lower rolling device is arranged below the rolling drum and comprises a first rolling piece and a second rolling piece, the first rolling piece is provided with a first roller, and the second rolling piece is provided with a second roller, the side rolling device comprises a third rolling piece and a fourth rolling piece, the third rolling piece is provided with a third roller, and the fourth rolling piece is provided with a fourth roller, when the green tire is rolled, the first roller and the second roller are respectively in abutment with the green tire and move in opposite directions, the third roller is in abutment with the green tire and is wrapped from the circumferential surface of the rolling drum to the front end surface, and the fourth roller is in abutment with the green tire and is wrapped from the circumferential surface of the rolling drum to the rear end surface, through the arrangement, the turn-up mechanism has better compacting effect on the green tire and higher machining precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire processing technology, and particularly relates to a covering mechanism for tire forming. BACKGROUND

[0002] The tire blank is wrapped outside the tire body to prevent the tire body from being mechanically damaged, and can transmit the traction and braking force of the vehicle and buffer the impact of the tire during driving. Rolling the tire blank to the tire body is an important process in tire production, which dominates the forming quality of the tire.

[0003] In the prior art, a plurality of fixed-position roller devices are generally used to compact the tire blank to the tire body, so that the continuity of tire processing is higher, and the production efficiency of the tire is improved. However, the above rolling method easily causes the tire blank on the tire body circumferential surface to be unevenly attached, which reduces the processing precision. At the same time, the side roller cannot be closely attached to the tire blank when pressing the tire blank, and the rolling force in the axial direction of the tire body is easily generated, which causes a gap between the tire body and the tire blank, so that the compaction effect of the tire blank is poor, and the finished product quality of the tire is reduced. SUMMARY

[0004] In order to solve the problems of the prior art, the purpose of the present application is to provide a covering mechanism for tire forming with higher processing precision, which can compact the tire blank to the tire body and reduce the possibility of a gap between the tire body and the tire blank.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A kind of edge wrapping mechanism for tire forming, comprising: base, rolling drum, clamping device, lower rolling device and side rolling device, the rear side of base is equipped with support plate being arranged along vertical direction;Rolling drum is arranged in the front side of support plate, is rotatably connected to support plate;Clamping device is at least partially arranged in the front side of rolling drum, can move along the axial direction of rolling drum, for clamping tire body, sets up tire body on rolling drum;Lower rolling device is at least partially arranged below rolling drum, is installed on the top surface of base, comprising first rolling piece and second rolling piece that can move along the axial direction of rolling drum;First rolling piece is equipped with first roller, and second rolling piece is equipped with second roller;Side rolling device is at least partially arranged in the left side or right side of rolling drum, comprising third rolling piece being arranged in the front end of rolling drum and fourth rolling piece being arranged in the rear end of rolling drum;Third rolling piece is equipped with third roller, and fourth rolling piece is equipped with fourth roller;When rolling embryo is rolled, rolling drum rotates along first rotation direction;First roller and second roller are respectively in contact with the embryo on the circumferential surface of rolling drum, simultaneously, first roller and second roller move in the axial direction of rolling drum and are opposite, and the embryo is rolled;Third roller is in contact with the embryo around the front end surface of rolling drum, rotates along second rotation direction, and is rolled from the circumferential surface of rolling drum to the front end surface, and the embryo is rolled;Fourth roller is in contact with the embryo around the rear end surface of rolling drum, rotates along third rotation direction, and is rolled from the circumferential surface of rolling drum to the rear end surface, and the embryo is rolled.

[0007] Further, the lower rolling device comprises a support seat and a screw rod;The screw rod is at least partially arranged on the support seat and extends in the axial direction of the rolling drum;The first rolling piece and the second rolling piece are arranged on the support seat in the front-rear direction and are threadedly connected with the screw rod respectively.

[0008] Further, the first rolling piece comprises a connecting portion, a lifting portion and a first roller, the connecting portion is threadedly connected with the screw rod, the lifting portion is arranged on the connecting portion, and the first roller is arranged on the top of the lifting portion.

[0009] Further, the side rolling device comprises a conveying table, a conveying piece, a first support table and a second support table;The conveying table is arranged on the left side or the right side of the base;The conveying piece is arranged on the conveying table;The first support table and the second support table are arranged on the conveying piece in the front-rear direction;The third rolling piece is arranged on the first support table, and the fourth rolling piece is arranged on the second support table;The conveying piece can drive the first support table and the second support table to move in the left-right direction of the edge wrapping mechanism.

[0010] Further, the top of the conveying piece is provided with a sliding rail in the axial direction of the rolling drum;The bottom of the first support table and the second support table is respectively provided with a sliding block, and the first support table and the second support table are slidably arranged on the sliding rail through the sliding block.

[0011] Further, the first supporting table is provided with a driving member, and the bottom of the first supporting table is provided with a transmission member; the driving member is in transmission connection with the third rolling member through the transmission member, so as to drive the third rolling member to rotate.

[0012] Further, the third rolling member further comprises a connecting plate, a buffer member, a supporting member and a supporting rod; the connecting plate is connected with the transmission member; the supporting member is connected with the connecting plate through the buffer member; the supporting rod is arranged on the supporting member in the vertical direction; and the third rolling wheel is arranged on the top of the supporting rod.

[0013] Further, the third rolling member further comprises a reset member arranged between the connecting plate and the supporting member.

[0014] Further, the buffer member comprises an elastic member and two buffer pads; the elastic member extends in the vertical direction, and two ends of the elastic member are connected with the supporting member and the connecting plate respectively; and the two buffer pads are sleeved on the elastic member in the up-down direction, so as to limit the bending angle of the elastic member.

[0015] Further, the first supporting table is provided with an adjusting member, and the adjusting member is in rotation connection with the transmission member.

[0016] The present application provides a covering mechanism for tire forming, which is characterized in that a first rolling member and a second rolling member are arranged on the lower side of a rolling drum and move along the axial direction of the rolling drum to roll the tire blank on the circumferential surface of the rolling drum, so that the rolling of the tire blank is more comprehensive, the adhesion between the tire blank and the tire body is improved, and the gap between the tire blank and the tire body is avoided; meanwhile, a third rolling member and a fourth rolling member are arranged at the front end and the rear end of the rolling drum respectively, and rotate around the front end surface and the rear end surface of the rolling drum respectively to roll the tire blank around the front end surface and the rear end surface of the rolling drum, so that the adhesion between the two ends of the tire blank and the tire body is improved, and the processing precision of the tire covering device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view of the covering mechanism according to the present application;

[0018] Figure 2 is a left view of the covering mechanism according to the present application;

[0019] Figure 3 is a left view of the side rolling device according to the present application;

[0020] Figure 4 is a top view of the side rolling device according to the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments will be described clearly and completely below. Obviously, the described embodiments are only a part of, rather than all of, the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0022] As shown in Figure 1 and Figure 2 , the present embodiment provides a turnup mechanism for tire forming. The turnup mechanism comprises a base 11, a rolling drum 12, a clamping device 13, a lower rolling device 14 and a side rolling device 15. Specifically, the rear side of the base 11 is provided with a support plate 111 arranged in the vertical direction, and the plane where the support plate 111 is located is substantially perpendicular to the front-rear direction of the turnup mechanism. The rolling drum 12 is arranged at the front side of the support plate 111, and the rear side is provided with a shaft 121 which is rotatably connected to the support plate 111 through the shaft 121. The clamping device 13 is at least partially arranged at the front side of the rolling drum 12 and is movable along the axial direction of the rolling drum 12, and is used for clamping a tire body and sleeving the tire body on the rolling drum 12. The lower rolling device 14 is at least partially arranged below the rolling drum 12 and is arranged on the top surface of the base 11, and comprises a first rolling piece 141 and a second rolling piece 142 which are movable along the axial direction of the rolling drum 12, so that the lower rolling device 14 can more comprehensively roll the tire blank on the circumferential surface of the rolling drum 12, and avoid gaps between the tire blank and the tire body. More specifically, the first rolling piece 141 is provided with a first roller 1411, and the second rolling piece 142 is provided with a second roller 1421. The first roller 1411 and the second roller 1421 are used for abutting against the tire blank and rolling the tire blank. The side rolling device 15 is at least partially arranged at the left side or the right side of the rolling drum 12, and comprises a third rolling piece 151 arranged at the front end of the rolling drum 12 and a fourth rolling piece 152 arranged at the rear end of the rolling drum 12. The third rolling piece 151 is provided with a third roller 1511 which is used for rolling the tire blank around the front end surface of the rolling drum 12. The fourth rolling piece 152 is provided with a fourth roller 1521 which is used for rolling the tire blank around the rear end surface of the rolling drum 12. In order to clearly illustrate the technical solutions of the present application, the left side, the right side, the upper side and the lower side are defined as shown in Figure 1 , and the front side and the rear side are defined as shown in Figure 2 .

[0023] As shown in Figures 1 to 3As shown, when rolling the tire blank, the rolling drum 12 rotates along the first rotation direction T1. The first roller 1411 and the second roller 1421 respectively abut against the tire blank on the circumferential surface of the rolling drum 12, and at the same time, the first roller 1411 and the second roller 1421 move away from each other along the axial direction of the rolling drum 12 to roll the tire blank; the third roller 1511 abuts against the tire blank around the front end surface of the rolling drum 12, rotates along the second rotation direction T2, and rolls the tire blank from the circumferential surface to the front end surface of the rolling drum 12; and the fourth roller 1521 abuts against the tire blank around the rear end surface of the rolling drum 12, rotates along the third rotation direction T3, and rolls the tire blank from the circumferential surface to the rear end surface of the rolling drum 12.

[0024] Through the above arrangement, the edge covering mechanism can more comprehensively roll the tire blank, and can avoid the tire blank and the tire body from being incompletely rolled due to the gap between the rollers. At the same time, the third roller 1511 and the fourth roller 1521 roll from the circumferential surface to the end surface, which can avoid generating rolling force along the axial direction of the rolling drum 12, so that the two ends of the tire blank are more closely attached to the tire body, and the processing precision of the edge covering mechanism is improved.

[0025] As shown in FIG. 1, the edge covering mechanism 1 includes a rolling drum 12, a first roller 141, a second roller 142, a third roller 151, a fourth roller 152, and a lower rolling device 14. Figure 1 As shown, the lower rolling device 14 includes a support seat 143 and a screw rod 144. The screw rod 144 is at least partially arranged on the support seat 143 and extends along the axial direction of the rolling drum 12. The first rolling member 141 and the second rolling member 142 are arranged on the support seat 143 along the front-rear direction and are respectively threadedly connected with the screw rod 144. Specifically, the first rolling member 141 is positively connected with the screw rod 144, and the second rolling member 142 is negatively connected with the screw rod 144, so that when the screw rod 144 rotates along the first rotation direction T1, the first rolling member 141 moves toward the front end of the screw rod 144, and the second rolling member 142 moves toward the rear end of the screw rod 144. Further, the initial positions of the first rolling member 141 and the second rolling member 142 are abutted against each other. When rolling the tire blank, the screw rod 144 rotates along the first rotation direction T1 to move the first rolling member 141 and the second rolling member 142 away from each other along the extension direction of the screw rod 144, and in this process, the first roller 1411 and the second roller 1421 respectively abut against the tire blank to compact the tire blank to the tire body. After the tire blank is rolled, the screw rod 144 is rotated back to restore the first rolling member 141 and the second rolling member 142 to the original positions. Through the above arrangement, the first rolling member 141 and the second rolling member 142 can reduce the possibility of the gap between the tire body and the tire blank when rolling the tire blank, and the processing precision of the tire is improved. It can be understood that in other embodiments, as long as the first rolling member 141 and the second rolling member 142 can be moved away from each other to roll the tire blank, the screw rod 144 can also be replaced by a slide rail structure, a telescopic mechanical arm, or other structures.

[0026] More specifically, the first rolling member 141 comprises a connecting portion 1412, a lifting portion 1413 and a first roller 1411. The connecting portion 1412 is threadedly connected with the screw rod 144, the lifting portion 1413 is arranged on the connecting portion 1412, and the first roller 1411 is arranged at the top end of the lifting portion 1413. The lifting portion 1413 is arranged on the left side or the right side of the connecting portion 1412, and is used to adjust the distance between the first roller 1411 and the tire blank. The lifting portion 1413 comprises a first part for lifting and a second part fixedly arranged on the connecting portion 1412. When rolling the tire blank, the first part of the lifting portion 1413 is lifted until the first roller 1411 closely abuts the tire blank, so as to compact the tire blank into the tire body. It can be understood that the structure of the second rolling member 142 is substantially the same as that of the first rolling member 141, and is symmetrically arranged with respect to the vertical line on which the screw rod 144 is located, and will not be described herein again.

[0027] As shown in Figures 1 to 3 The side rolling device 15 comprises a conveying table 153, a conveying member 154, a first supporting table 155 and a second supporting table 156. Specifically, the conveying table 153 is arranged on the left side or the right side of the base 11, and in this embodiment, the conveying table 153 is arranged on the left side of the base 11. The conveying member 154 is arranged on the conveying table 153. The first supporting table 155 and the second supporting table 156 are arranged on the conveying member 154 along the front-rear direction. The third rolling member 151 is arranged on the first supporting table 155, and the fourth rolling member 152 is arranged on the second supporting table 156. The conveying member 154 can drive the first supporting table 155 and the second supporting table 156 to move along the left-right direction of the edge wrapping mechanism, so as to control the distance between the third rolling member 151 and the fourth rolling member 152 and the rolling drum 12. When rolling the tire blank, the conveying member 154 can transport the first supporting table 155 and the second supporting table 156 to the left end of the rolling drum 12, so that the third roller 1511 and the fourth roller 1521 respectively abut the tire blank, so as to roll the tire blank.

[0028] Specifically, the top of the conveying member 154 is provided with a sliding rail 157 along the axial direction of the rolling drum 12. The bottom of the first supporting table 155 and the second supporting table 156 is respectively provided with a sliding block 158, and the first supporting table 155 and the second supporting table 156 are both slidably arranged on the sliding rail 157 through the sliding block 158. The third roller 1511 can adjust the distance from the front end face of the rolling drum 12 through the sliding rail 157, and the fourth roller 1521 can adjust the distance from the rear end face of the rolling drum 12 through the sliding rail 157, so that the side rolling device 15 is suitable for various models of the rolling drum 12, and the rolling precision of the third roller 1511 and the fourth roller 1521 on the tire blank is higher.

[0029] The first supporting table 155 is provided with a driving member 1551, and the bottom of the first supporting table 155 is provided with a transmission member 1552. The driving member 1551 is in transmission connection with the third rolling member 151 through the transmission member 1552, and can drive the third rolling member 151 to rotate. Specifically, the transmission member 1552 comprises a first transmission wheel 1552a, a second transmission wheel 1552b and a transmission belt 1552c. The driving member 1551 is connected with the first transmission wheel 1552a to drive the first transmission wheel 1552a to rotate. The first transmission wheel 1552a is in transmission connection with the second transmission wheel 1552b through the transmission belt 1552c to drive the second transmission wheel 1552b to rotate. The third rolling member 151 is connected with the second transmission wheel 1552b and rotates coaxially with the second transmission wheel 1552b.

[0030] As shown in Figure 4 The driving member 1551 is provided with an adjusting member 159 at one end close to the first transmission wheel 1552a. The adjusting member 159 is in rotation connection with the transmission member 1552. The adjusting member 159 is used to adjust the initial position of the third rolling member 151, that is, to adjust the included angle between the axial direction of the third rolling wheel 1511 and the axial direction of the rolling drum 12, so that the side rolling device 15 is suitable for different models of the rolling drum 12, and the versatility of the side rolling device 15 is improved. Specifically, the adjusting member 159 comprises a rotating shaft 1591 and a rotating part 1592. The rotating shaft 1591 is connected with the first transmission wheel 1552a and rotates coaxially with the first transmission wheel 1552a. The rotating part 1592 is sleeved on the rotating shaft 1591. Further, the outer wall of the rotating shaft 1591 is provided with a first clamping groove 1591a. The rotating part 1592 is provided with a threaded hole 1592a in the radial direction of the rotating part 1592, and the inner wall is provided with a second clamping groove 1592b in communication with the threaded hole 1592a. The threaded hole 1592a is provided with a bolt 1592c. The outer wall of the rotating part 1592 is provided with a rotating handle 1592d which extends substantially in the radial direction of the rotating part 1592. When manual adjustment of the third rolling member 151 is needed, the rotating part 1592 can be adjusted so that the first clamping groove 1591a is opposite to the second clamping groove 1592b. The bolt 1592c is passed through the threaded hole 1592a and the second clamping groove 1592b, and the bolt 1592c is at least partially arranged in the first clamping groove 1591a to make the rotating part 1592 and the rotating shaft 1591 clamped. At this time, the rotating handle 1592d can be used to rotate the rotating part 1592 and the rotating shaft 1591, and the third rolling member 151 is driven by the transmission member 1552 to adjust the initial position of the third rolling member 151.

[0031] It can be understood that the second supporting table 156 has substantially the same structure as the first supporting table 155, and the two are correspondingly arranged on the slide rail 157, which will not be described here.

[0032] As shown in Figures 1 to 3As shown, the third rolling member 151 further comprises a connecting plate 1512, a buffer member 1513, a supporting member 1514 and a supporting rod 1515. The connecting plate 1512 is connected with the transmission member 1552. The supporting member 1514 is connected with the connecting plate 1512 through the buffer member 1513, and the supporting rod 1515 is arranged on the supporting member 1514 in the vertical direction, and the third roller 1511 is arranged on the top of the supporting rod 1515. When rolling the tire blank at the front end surface of the rolling drum 12, the conveying member 154 conveys the first supporting table 155 to the direction of the rolling drum 12 until the tire blank slightly presses the third roller 1511. At this time, the buffer member 1513 provides an upward thrust to the supporting member 1514, forcing the supporting rod 1515 to be straightened, so that the third roller 1511 can be closely attached to the tire blank, and the tire blank can be more tightly rolled to the tire body, improving the processing precision of the turning-up mechanism.

[0033] Further, the buffer member 1513 comprises an elastic member 1513a and two buffer pads 1513b. The elastic member 1513a extends substantially in the vertical direction, and two ends thereof are connected with the supporting member 1514 and the connecting plate 1512 respectively, for providing the thrust to straighten the supporting rod 1515. The two buffer pads 1513b are sleeved on the elastic member 1513a in the up-down direction, and when the elastic member 1513a is bent, the two buffer pads 1513b at least partially abut to limit the bending angle of the elastic member 1513a. The buffer pad 1513b is made of rubber material to reduce the wear between the two buffer pads 1513b. Further, the third rolling member 151 is further provided with a reset member 1516 arranged between the connecting plate 1512 and the supporting member 1514, and the reset member 1516 is used to straighten the supporting rod 1515.

[0034] It can be understood that the structure of the fourth rolling member 152 is basically the same as that of the third rolling member 151, and they are arranged corresponding to each other, which will not be described here.

[0035] In summary, the application provides a covering mechanism. When rolling the tire blank, the rolling drum 12 rotates in the first rotation direction T1. The first rolling part 141 lifts the first roller 1411 through the lifting part 1413, and the second rolling part 142 also lifts the second roller 1421 in the same way, so that the first roller 1411 and the second roller 1421 abut against the tire blank. Then, the screw rod 144 rotates in the first rotation direction T1, so that the first rolling part 141 and the second rolling part 142 move away from each other, and the tire blank on the circumferential surface of the rolling drum 12 is fully rolled to prevent gaps between the tire blank and the tire body. Then, the conveying part 154 transports the first support table 155 and the second support table 156 to the left side of the rolling drum 12, so that the third roller 1511 and the fourth roller 1521 abut against the rolling drum 12 respectively. The third roller 1511 rotates in the second rotation direction T2 and is wound from the circumferential surface of the rolling drum 12 to the front end surface, and the fourth roller 1521 rotates in the third rotation direction T3 and is wound from the circumferential surface of the rolling drum 12 to the rear end surface, so as to roll the tire blank. Through the above-mentioned way, the covering mechanism can more comprehensively roll the tire blank and has higher processing precision.

[0036] The above description of the embodiments of the present application enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tipping mechanism for tire building, characterized by, Comprising a base (11), a support plate (111) being provided on the rear side of the base (11) in the vertical direction; a rolling drum (12) being provided on the front side of the support plate (111) and being rotatably connected to the support plate (111); a clamping device (13) being provided at least partially on the front side of the rolling drum (12) and being movable in the axial direction of the rolling drum (12) and being used for clamping a tire body and sleeving the tire body on the rolling drum (12); a lower rolling device (14) being provided at least partially below the rolling drum (12) and being arranged on the top surface of the base (11) and comprising a first rolling piece (141) and a second rolling piece (142) which are movable in the axial direction of the rolling drum (12); the first rolling piece (141) is provided with a first roller (1411) and the second rolling piece (142) is provided with a second roller (1421); a side rolling device (15) being provided at least partially on the left side or the right side of the rolling drum (12) and comprising a third rolling piece (151) provided on the front end of the rolling drum (12) and a fourth rolling piece (152) provided on the rear end of the rolling drum (12); the third rolling piece (151) is provided with a third roller (1511) and the fourth rolling piece (152) is provided with a fourth roller (1521); when rolling the tire body, the rolling drum (12) rotates in a first rotation direction T1; the first roller (1411) and the second roller (1421) respectively abut the tire body on the circumferential surface of the rolling drum (12), at the same time, the first roller (1411) and the second roller (1421) move away from each other in the axial direction of the rolling drum (12) to roll the tire body; the third roller (1511) abuts the tire body around the front end surface of the rolling drum (12) and rotates in a second rotation direction T2 to roll the tire body from the circumferential surface to the front end surface of the rolling drum (12); the fourth roller (1521) abuts the tire body around the rear end surface of the rolling drum (12) and rotates in a third rotation direction T3 to roll the tire body from the circumferential surface to the rear end surface of the rolling drum (12); the lower rolling device (14) comprises a support seat (143) and a screw rod (144); the screw rod (144) is provided at least partially on the support seat (143) and extends in the axial direction of the rolling drum (12); the first rolling piece (141) and the second rolling piece (142) are provided on the support seat (143) in the front-rear direction and are respectively threadedly connected to the screw rod (144); The side rolling device (15) comprises a conveying table (153), a conveying piece (154), a first supporting table (155) and a second supporting table (156); the conveying table (153) is arranged on the left side or the right side of the base (11); the conveying piece (154) is arranged on the conveying table (153); the first supporting table (155) and the second supporting table (156) are arranged on the conveying piece (154) in the front-rear direction; the third rolling piece (151) is arranged on the first supporting table (155), and the fourth rolling piece (152) is arranged on the second supporting table (156); the conveying piece (154) can drive the first supporting table (155) and the second supporting table (156) to move in the left-right direction of the edge covering mechanism.

2. The beading mechanism for tire building according to claim 1, wherein The first rolling piece (141) comprises a connecting part (1412), a lifting part (1413) and the first roller (1411); the connecting part (1412) is threadedly connected with the screw rod (144); the lifting part (1413) is arranged on the connecting part (1412); and the first roller (1411) is arranged on the top of the lifting part (1413).

3. The beading mechanism for tire building according to claim 1, wherein The conveying piece (154) is provided with a sliding rail (157) in the axial direction of the rolling drum (12) on the top; the first supporting table (155) and the second supporting table (156) are respectively provided with sliding blocks (158) on the bottom; and the first supporting table (155) and the second supporting table (156) are slidably arranged on the sliding rail (157) through the sliding blocks (158).

4. The beading mechanism for tire building according to claim 1, wherein The first supporting table (155) is provided with a driving piece (1551) and is provided with a transmission piece (1552) on the bottom; the driving piece (1551) is in transmission connection with the third rolling piece (151) through the transmission piece (1552) to drive the third rolling piece (151) to rotate.

5. The beading mechanism for tire building according to claim 4, wherein The third rolling piece (151) further comprises a connecting plate (1512), a buffer piece (1513), a supporting piece (1514) and a supporting rod (1515); the connecting plate (1512) is connected with the transmission piece (1552); the supporting piece (1514) is connected with the connecting plate (1512) through the buffer piece (1513); the supporting rod (1515) is arranged on the supporting piece (1514) in the vertical direction; and the third roller (1511) is arranged on the top of the supporting rod (1515).

6. The beading mechanism for tire building according to claim 5, wherein The third rolling piece (151) further comprises a reset piece (1516); and the reset piece (1516) is arranged between the connecting plate (1512) and the supporting piece (1514).

7. The beading mechanism for tire building according to claim 5, wherein The buffer (1513) comprises an elastic member (1513a) and two buffer pads (1513b); the elastic member (1513a) extends in a vertical direction, and two ends thereof are connected with the support member (1514) and the connecting plate (1512) respectively; the two buffer pads (1513b) are sleeved on the elastic member (1513a) in a top-bottom direction, and are used for limiting the bending angle of the elastic member (1513a).

8. The beading mechanism for tire building according to claim 4, wherein The first supporting table (155) is provided with an adjusting member (159), and the adjusting member (159) is rotationally connected with the transmission member (1552).

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