Solid tire forming drum device and forming machine

Abstract

The utility model relates to a solid tire forming drum device and a forming machine. The solid tire forming drum device comprises a hollow main shaft; the plurality of tiles are arranged around the hollow main shaft; the sliding sleeve is arranged on the periphery of the hollow main shaft in a sliding and sleeving manner; the output end of the driving mechanism is connected with the sliding sleeve; the tiles and the connecting rod assemblies are arranged in a one-to-one correspondence mode, each connecting rod assembly comprises a first connecting rod, the first end of each first connecting rod is hinged to the corresponding sliding sleeve, the second end of each first connecting rod is hinged to the corresponding tile, and each first connecting rod is provided with a first containing groove; the first end of the second connecting rod is hinged to the hollow main shaft, the second end of the second connecting rod extends into the first containing groove and is hinged to the second connecting rod, and when the first end of the first connecting rod slides in the direction away from the first end of the second connecting rod, the second connecting rod can be contained in the first containing groove; the solid tire forming drum can solve the technical problem that in the prior art, the diameter expansion span of the solid tire forming drum is small.

Description

Technical Field

[0001] The utility model belongs to the technical field of tire production, and specifically relates to a solid tire forming drum device and a forming machine. Background Art

[0002] During the production process of solid tires, the rubber compound is pressed into sheets by an open mill and wound around a forming drum to form a tire embryo, which is then transferred to a vulcanization workshop for vulcanization to form a tire.

[0003] Since there are many specifications of current solid tire embryos, in the traditional production process of solid tire embryos, the expansion and contraction range of the forming drum is small. One forming drum is used for every two specifications, and the diameter expansion and contraction span of the forming drum is small. It is necessary to frequently replace the solid tire forming drums with different expansion and contraction ranges to process solid tire embryos of various specifications, which seriously affects the production efficiency. Therefore, there is an urgent need for a solid tire forming drum with a large diameter expansion and contraction span. Summary of the Invention

[0004] As described in the background art, please refer to Figure 1 , there is a solid tire forming drum in the prior art, including structures such as a cylinder 01, a hollow main shaft 02, a piston 03, a connecting rod 04, a slideway 05, and a tile 06, etc. The cylinder 01 drives the piston 03 to reciprocate in the hollow main shaft 02, thereby driving the scissor-shaped connecting rod 04 to move, and then driving the tile 06 to move radially, and cooperating with the slideway 05 to realize the expansion and contraction of the solid tire forming drum to adapt to the production of solid tire embryos with different diameters. However, there are still many problems with the above solid tire forming drum device. First, since there are many specifications of solid tire embryos, and the diameter expansion and contraction span of the above solid tire forming drum is small, it is necessary to frequently replace the solid tire forming drums with different expansion and contraction ranges to process solid tire embryos of various specifications, which seriously affects the production efficiency; second, the diameters at both ends of the above solid tire forming drum are unstable. Especially after the solid tire forming drum is used for a period of time, the diameter deviation at both ends will increase due to different wear degrees at both ends, resulting in a low qualification rate of the tires and a low service life of the solid tire forming drum.

[0005] In view of the various deficiencies of the prior art, a solid tire forming drum device and a forming machine are now proposed to solve the technical problem of the small diameter expansion and contraction span of the solid tire forming drum in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] In a first aspect, the present utility model provides a solid tire forming drum device, comprising: a hollow main shaft; a plurality of tiles arranged around the hollow main shaft to form an annular structure for positioning a tire; a sliding sleeve slidably sleeved around the periphery of the hollow main shaft; a driving mechanism, the output end of the driving mechanism is connected to the sliding sleeve to drive the sliding sleeve to reciprocate along the hollow main shaft; a connecting rod assembly, the tiles are provided corresponding to the connecting rod assembly one by one, and the connecting rod assembly includes: a first connecting rod, the first end of the first connecting rod is hinged to the sliding sleeve, the second end of the first connecting rod is hinged to the tile, and a first receiving groove is formed on the first connecting rod; a second connecting rod, the first end of the second connecting rod is hinged to the hollow main shaft, the second end of the second connecting rod extends into the first receiving groove and is hinged to the second connecting rod, when the first end of the first connecting rod slides in a direction away from the first end of the second connecting rod, the second connecting rod can be received into the first receiving groove.

[0008] This technical solution is further configured such that the sliding sleeve includes a first sliding sleeve and a second sliding sleeve, the first sliding sleeve is connected to the first connecting rod, and the first sliding sleeve and the second sliding sleeve move synchronously; the connecting rod assembly further includes: a third connecting rod, the first end of the third connecting rod is hinged to the second sliding sleeve, the second end of the third connecting rod is hinged to the tile, and a second receiving groove is formed on the third connecting rod; a fourth connecting rod, the first end of the fourth connecting rod is hinged to the hollow main shaft, the second end of the fourth connecting rod extends into the second receiving groove and is hinged to the fourth connecting rod, when the first end of the third connecting rod slides in a direction away from the first end of the fourth connecting rod, the fourth connecting rod can be received into the second receiving groove; the fourth connecting rod and the second connecting rod are connected to the hollow main shaft at intervals.

[0009] This technical solution is further configured such that a first fixing sleeve and a second fixing sleeve are sleeved on the hollow main shaft, both the first fixing sleeve and the second fixing sleeve are fixedly connected to the hollow main shaft, the second connecting rod is connected to the first fixing sleeve, the fourth connecting rod is connected to the second fixing sleeve, the first sliding sleeve reciprocates between the first fixing sleeve and the second fixing sleeve, and the second sliding sleeve reciprocates on the side of the second fixing sleeve away from the first fixing sleeve.

[0010] This technical solution is further configured such that a piston rod is connected to the output end of the driving mechanism, the piston rod is movably arranged in the hollow chamber of the hollow main shaft, the piston rod is connected to the sliding sleeve through a connecting member, and long key slot holes are provided on opposite sides of the hollow main shaft; the connecting member passes through the sliding sleeve, the long key slot hole, the piston rod in sequence from the outside of the sliding sleeve, and passes out through the long key slot hole and the sliding sleeve on the opposite side.

[0011] This technical solution is further configured such that a sliding key matching the pore wall of the long keyway hole is provided on the piston rod.

[0012] This technical solution is further configured such that an installation sleeve is also sleeved on the hollow main shaft. The installation sleeve is fixedly connected to the hollow main shaft, and the second fixed sleeve is detachably connected to the installation sleeve. When the second fixed sleeve is not connected to the installation sleeve, the second fixed sleeve can move axially along the hollow main shaft. The installation sleeve is located on the side of the second fixed sleeve close to the first fixed sleeve, and the first sliding sleeve reciprocates between the first fixed sleeve and the installation sleeve; by adding a gasket between the installation sleeve and the second fixed sleeve, the included angle between the third connecting rod and the fourth connecting rod can be adjusted.

[0013] This technical solution is further configured such that an annular card slot is provided on the outer wall surface of the hollow main shaft, and the installation sleeve is clamped in the annular card slot to prevent the installation sleeve from moving axially relative to the hollow main shaft.

[0014] This technical solution is further configured such that a fixed key is fixedly provided on the installation sleeve, and the fixed key is clamped in the long keyway hole to prevent the installation sleeve from rotating relative to the hollow main shaft.

[0015] This technical solution is further configured such that the groove width of the first accommodation groove is greater than the width of the second connecting rod, and the groove width of the second accommodation groove is greater than the width of the fourth connecting rod.

[0016] In a second aspect, the present utility model provides a molding machine, including the above-mentioned solid tire molding drum device.

[0017] The beneficial effects of the present utility model are as follows: When the first connecting rod moves axially along the hollow main shaft, the second connecting rod supports the first connecting rod to drive the tile to move radially, so as to realize the expansion and contraction of the diameter of the solid tire molding drum. By providing a first accommodation groove on the first connecting rod, when the first end of the first connecting rod slides in a direction away from the first end of the second connecting rod, that is, when shrinking the drum, the second connecting rod can be gradually received in the first accommodation groove; when the first end of the first connecting rod slides in the opposite direction, that is, when expanding the drum, the first accommodation groove provides a space for avoiding interference between the first connecting rod and the second connecting rod. That is, during shrinking and expanding of the drum, the first connecting rod and the second connecting rod will not interfere with each other. Due to the provision of the first accommodation groove, the solid tire molding drum can reach a sufficiently small contraction diameter during shrinking and a larger expansion diameter during expanding, increasing the convenience of producing the solid tire embryo, reducing the replacement frequency of the solid tire molding drum, thereby reducing the labor intensity and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a solid tire molding drum device in the prior art;

[0019] Figure 2 It is a schematic diagram of the solid tire forming drum device according to an embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the solid tire forming drum device according to an embodiment of the present utility model (the tile is not shown);

[0021] Figure 4 It is a left view of the solid tire forming drum device according to an embodiment of the present utility model;

[0022] Figure 5 It is Figure 4 the A - A cross - sectional view in

[0023] Figure 6 It is Figure 2 the partial enlarged view at B in

[0024] Figure 7 It is a schematic diagram of the hollow main shaft according to an embodiment of the present utility model.

[0025] In the drawings:

[0026] 01, cylinder; 02, hollow main shaft; 03, piston; 04, connecting rod; 05, slideway; 06, tile;

[0027] 1, hollow main shaft; 2, tile; 3, driving mechanism; 4, first connecting rod; 5, first receiving groove; 6, second connecting rod; 7, first sliding sleeve; 8, second sliding sleeve; 9, third connecting rod; 10, second receiving groove; 11, fourth connecting rod; 12, first fixing sleeve; 13, second fixing sleeve; 14, long keyway hole; 15, sliding key; 16, mounting sleeve; 17, annular clamping groove; 18, fixing key; 19, piston rod. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the drawings of the present utility model. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without making creative efforts shall all fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only with reference to the directions in the drawings. Therefore, the directional terms used are for illustration rather than to limit the present invention.

[0029] The present utility model will be further described below in conjunction with the drawings and preferred embodiments.

[0030] First, according to an embodiment of the present utility model, a solid tire forming drum device is provided. Please refer to Figures 2 to 6, including: a hollow spindle 1; a plurality of tiles 2, which are arranged around the hollow spindle 1 to form an annular structure for positioning a tire; a sliding sleeve, which is slidably sleeved on the periphery of the hollow spindle 1; a driving mechanism 3, the output end of the driving mechanism 3 is connected to the sliding sleeve to drive the sliding sleeve to reciprocate along the hollow spindle 1; a connecting rod assembly, the tiles 2 and the connecting rod assembly are arranged in one-to-one correspondence, and the connecting rod assembly includes: a first connecting rod 4, the first end of the first connecting rod 4 is hinged to the sliding sleeve, the second end of the first connecting rod 4 is hinged to the tile 2, and a first receiving groove 5 is formed on the first connecting rod 4; a second connecting rod 6, the first end of the second connecting rod 6 is hinged to the hollow spindle 1, the second end of the second connecting rod 6 extends into the first receiving groove 5 and is hinged to the second connecting rod 6, when the first end of the first connecting rod 4 slides in a direction away from the first end of the second connecting rod 6, the second connecting rod 6 can be received into the first receiving groove 5.

[0031] It should be noted that when the first connecting rod moves along the axial direction of the hollow spindle 1, the second connecting rod supports the first connecting rod to drive the tile 2 to move radially, so as to realize the expansion and contraction of the diameter of the solid tire forming drum. By providing the first receiving groove 5 on the first connecting rod 4, when the first end of the first connecting rod 4 slides in a direction away from the first end of the second connecting rod 6, that is, when the drum is contracted, the second connecting rod 6 can be gradually received into the first receiving groove 5; when the first end of the first connecting rod 4 slides in the opposite direction, that is, when the drum is expanded, the first receiving groove 5 provides a relief space to prevent interference between the first connecting rod 4 and the second connecting rod 6. That is, during drum contraction and expansion, the first connecting rod 4 and the second connecting rod 6 do not interfere with each other. Due to the provision of the first receiving groove 5, the solid tire forming drum can reach a sufficiently small contraction diameter during drum contraction and a larger expansion diameter during drum expansion, increasing the convenience of solid tire embryo production, reducing the replacement frequency of the solid tire forming drum, thereby reducing labor intensity and improving production efficiency.

[0032] In the solid tire forming drum device of this embodiment, the sliding sleeve includes a first sliding sleeve 7 and a second sliding sleeve 8. The first sliding sleeve 7 is connected to the first connecting rod 4, and the first sliding sleeve 7 and the second sliding sleeve 8 move synchronously; the connecting rod assembly further includes: a third connecting rod 9, the first end of the third connecting rod 9 is hinged to the second sliding sleeve 8, the second end of the third connecting rod 9 is hinged to the tile 2, and a second receiving groove 10 is formed on the third connecting rod 9; a fourth connecting rod 11, the first end of the fourth connecting rod 11 is hinged to the hollow spindle 1, the second end of the fourth connecting rod 11 extends into the second receiving groove 10 and is hinged to the fourth connecting rod 11, when the first end of the third connecting rod 9 slides in a direction away from the first end of the fourth connecting rod 11, the fourth connecting rod 11 can be received into the second receiving groove 10; the fourth connecting rod 11 and the second connecting rod 6 are connected to the hollow spindle 1 at intervals.

[0033] It should be noted that by providing the second receiving groove 10 in the third link 9, when the first end of the third link 9 slides away from the first end of the fourth link 11, i.e., when the drum contracts, the third link 9 can be gradually received into the second receiving groove 10; when the first end of the third link 9 slides in the opposite direction, i.e., when the drum expands, the second receiving groove 10 provides a clearance space to prevent interference between the third link 9 and the fourth link 11. That is, during drum contraction and expansion, there is no interference between the third link 9 and the fourth link 11. By providing the third link 9 and the fourth link 11, the load-bearing capacity of the solid tire forming drum is increased, enabling it to withstand a greater radial working pressure. Additionally, the first sliding sleeve 7 and the second sliding sleeve 8 move synchronously to ensure that the diameters of both ends of the solid tire forming drum expand and contract equally.

[0034] Specifically, the groove width of the first receiving groove 5 is greater than the width of the second link 6 to enable the second link 6 to smoothly enter and exit the first receiving groove 5, and the groove width of the second receiving groove 10 is greater than the width of the fourth link 11 to enable the fourth link 11 to smoothly enter and exit the second receiving groove 10.

[0035] Specifically, the first sliding sleeve 7 and the second sliding sleeve 8 are connected to the output end of the same drive mechanism 3 to enable the first sliding sleeve 7 and the second sliding sleeve 8 to move synchronously.

[0036] In the solid tire forming drum device of this embodiment, a first fixed sleeve 12 and a second fixed sleeve 13 are sleeved on the hollow main shaft 1. Both the first fixed sleeve 12 and the second fixed sleeve 13 are fixedly connected to the hollow main shaft 1. The second link 6 is connected to the first fixed sleeve 12, and the fourth link 11 is connected to the second fixed sleeve 13. The first sliding sleeve 7 reciprocates between the first fixed sleeve 12 and the second fixed sleeve 13, and the second sliding sleeve 8 reciprocates on the side of the second fixed sleeve 13 away from the first fixed sleeve 12.

[0037] It should be noted that by providing the first fixed sleeve 12 and the second fixed sleeve 13, the fixed ends of the link assembly are fixed to the hollow main shaft 1 to facilitate the sliding of the movable ends of the link assembly, thereby adjusting the expansion and contraction diameters of the solid tire forming drum.

[0038] In the solid tire forming drum device of this embodiment, the output end of the drive mechanism 3 is connected to a piston rod 19. The piston rod 19 is movably arranged in the hollow chamber of the hollow main shaft 1. The piston rod 19 is connected to the sliding sleeve through a connecting member. Long keyway holes 14 are provided on opposite sides of the hollow main shaft 1; the connecting member passes through the sliding sleeve, the long keyway hole 14, the piston rod 19, and the long keyway hole 14 and the sliding sleeve on the opposite side in sequence from the outside of the sliding sleeve.

[0039] In the solid tire forming drum device of this embodiment, a sliding key 15 that matches the hole wall of the long keyway hole 14 is provided on the piston rod 19. The sliding key 15 cooperates with the long keyway hole 14 to guide the movement direction of the sliding sleeve.

[0040] It is worth mentioning that the solid tire forming drum device has a power end for providing power and a loading and unloading end for loading and unloading the solid tire embryo. The end close to the driving mechanism 3 is the power end, and the end far from the driving mechanism 3 is the loading and unloading end.

[0041] In the solid tire forming drum device of this embodiment, an installation sleeve 16 is further sleeved on the hollow main shaft 1. The installation sleeve 16 is fixedly connected to the hollow main shaft 1, and the second fixing sleeve 13 is detachably connected to the installation sleeve 16. When the second fixing sleeve 13 is not connected to the installation sleeve 16, the second fixing sleeve 13 can move axially along the hollow main shaft 1. The installation sleeve 16 is located on the side of the second fixing sleeve 13 close to the first fixing sleeve 12, and the first sliding sleeve 7 reciprocates between the first fixing sleeve 12 and the installation sleeve 16; by adding a gasket between the installation sleeve 16 and the second fixing sleeve 13, the included angle between the third connecting rod 9 and the fourth connecting rod 11 can be adjusted.

[0042] It should be noted that the third connecting rod 9 and the fourth connecting rod 11 are located at the loading and unloading end of the solid tire forming drum device. Since the loading and unloading of the solid tire embryo are both carried out at the loading and unloading end, with the solid tire forming drum device being used multiple times, the hinge shafts of the third connecting rod 9 and the fourth connecting rod 11 at the loading and unloading end are prone to wear, resulting in a smaller diameter at the loading and unloading end. At this time, by adding a gasket between the installation sleeve 16 and the second fixing sleeve 13, the included angle between the third connecting rod 9 and the fourth connecting rod 11 can be adjusted. Since the stroke of the piston rod 19 is fixed, that is, the relative position of the second sliding sleeve 8 and the first sliding sleeve 7 is fixed, and the installation sleeve 16 is fixedly connected to the hollow main shaft 1, when a gasket is added between the installation sleeve 16 and the second fixing sleeve 13 at this time, the relative distance between the second fixing sleeve 13 and the second sliding sleeve 8 decreases, and under the supporting action of the fourth connecting rod, fine adjustment of the diameter of the tile 2 at the loading and unloading end is achieved. In short, by adding gaskets with different thicknesses between the installation sleeve 16 and the second fixing sleeve 13, the defects caused by wear during long-term use are compensated to improve the service life of the solid tire forming machine. Preferably, the gasket is made of a metal material with a relatively large stiffness.

[0043] In the solid tire forming drum device of this embodiment, please refer to Figures 1 to 7 , a circular groove 17 is formed on the outer wall surface of the hollow main shaft 1, and the installation sleeve 16 is clamped in the circular groove 17 to prevent the installation sleeve 16 from moving axially relative to the hollow main shaft 1.

[0044] In the solid tire forming drum device of this embodiment, please refer to Figure 6 , a fixing key 18 is fixedly provided on the installation sleeve 16, and the fixing key 18 is clamped in the long key groove 14 to prevent the installation sleeve 16 from rotating relative to the hollow main shaft 1.

[0045] It should be noted that the fixing of the mounting sleeve 16 is achieved by means of the annular clamping groove 17 and the long keyway hole 14 provided on the hollow spindle 1, and the structure is simple and easy to process. Preferably, the mounting sleeve 16 includes two half-rings that are detachably connected to facilitate the assembly of the mounting sleeve 16 and the hollow spindle 1.

[0046] In a second aspect, according to an embodiment of the present invention, a molding machine is provided, which includes the above-mentioned solid tire molding drum device.

[0047] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereby. That is, all equivalent changes and modifications made according to the scope of this application should still fall within the scope covered by the present invention.

Claims

1. A solid tire building drum device, characterized in that: include: Hollow spindle (1); A plurality of tiles (2), wherein the plurality of tiles (2) are arranged around the hollow main shaft (1) to form an annular structure for positioning the tire; A sliding sleeve, the sliding sleeve being slidably mounted on the periphery of the hollow main shaft (1); A driving mechanism (3), wherein an output end of the driving mechanism (3) is connected to the sliding sleeve to drive the sliding sleeve to perform reciprocating motion along the hollow main shaft (1); A connecting rod assembly, wherein the tile (2) is arranged in one-to-one correspondence with the connecting rod assembly, and the connecting rod assembly comprises: a first connecting rod (4), wherein a first end of the first connecting rod (4) is hinged to the sliding sleeve, a second end of the first connecting rod (4) is hinged to the tile (2), and a first receiving groove (5) is provided on the first connecting rod (4); A second connecting rod (6), wherein a first end of the second connecting rod (6) is hinged to the hollow main shaft (1), and a second end of the second connecting rod (6) extends into the first receiving groove (5) and is hinged to the second connecting rod (6); when the first end of the first connecting rod (4) slides in a direction away from the first end of the second connecting rod (6), the second connecting rod (6) can be received in the first receiving groove (5).

2. The solid tire building drum device according to claim 1, characterized in that: The sliding sleeve comprises a first sliding sleeve (7) and a second sliding sleeve (8); the first sliding sleeve (7) is connected to the first connecting rod (4), and the first sliding sleeve (7) and the second sliding sleeve (8) move synchronously; The connecting rod assembly also includes: a third connecting rod (9), wherein a first end of the third connecting rod (9) is hinged to the second sliding sleeve (8), a second end of the third connecting rod (9) is hinged to the tile (2), and a second receiving groove (10) is provided on the third connecting rod (9); a fourth connecting rod (11), wherein a first end of the fourth connecting rod (11) is hinged to the hollow main shaft (1), a second end of the fourth connecting rod (11) extends into the second receiving groove (10) and is hinged to the fourth connecting rod (11), and when the first end of the third connecting rod (9) slides in a direction away from the first end of the fourth connecting rod (11), the fourth connecting rod (11) can be received in the second receiving groove (10); The fourth connecting rod (11) and the second connecting rod (6) are connected to the hollow main shaft (1) at an interval.

3. The solid tire building drum device according to claim 2, characterized in that: A first fixed sleeve (12) and a second fixed sleeve (13) are sleeved on the hollow main shaft (1); the first fixed sleeve (12) and the second fixed sleeve (13) are both fixedly connected to the hollow main shaft (1); the second connecting rod (6) is connected to the first fixed sleeve (12); the fourth connecting rod (11) is connected to the second fixed sleeve (13); the first sliding sleeve (7) reciprocates between the first fixed sleeve (12) and the second fixed sleeve (13); and the second sliding sleeve (8) reciprocates on a side of the second fixed sleeve (13) away from the first fixed sleeve (12).

4. The solid tire building drum device according to claim 3, characterized in that: The output end of the driving mechanism (3) is connected to a piston rod (19), the piston rod (19) is movably arranged in the hollow chamber of the hollow main shaft (1), the piston rod (19) is connected to the sliding sleeve via a connecting piece, and long key slot holes (14) are arranged on two opposite sides of the hollow main shaft (1); The connecting piece passes through the sliding sleeve, the long key slot hole (14), the piston rod (19) in sequence from the outside of the sliding sleeve, and passes out through the long key slot hole (14) and the sliding sleeve on the opposite side.

5. The solid tire building drum device according to claim 4, characterized in that: The piston rod (19) is provided with a sliding key (15) that matches the hole wall of the long key slot hole (14).

6. The solid tire building drum device according to claim 4, characterized in that: The hollow main shaft (1) is also provided with a mounting sleeve (16), the mounting sleeve (16) being fixedly connected to the hollow main shaft (1), the second fixing sleeve (13) being detachably connected to the mounting sleeve (16), and when the second fixing sleeve (13) is not connected to the mounting sleeve (16), the second fixing sleeve (13) can move along the axial direction of the hollow main shaft (1), the mounting sleeve (16) being located on a side of the second fixing sleeve (13) close to the first fixing sleeve (12), and the first sliding sleeve (7) reciprocatingly moving between the first fixing sleeve (12) and the mounting sleeve (16); By adding a gasket between the mounting sleeve (16) and the second fixing sleeve (13), the angle between the third connecting rod (9) and the fourth connecting rod (11) can be adjusted.

7. The solid tire building drum device according to claim 6, characterized in that: An annular groove (17) is provided on the outer wall surface of the hollow main shaft (1), and the mounting sleeve (16) is mounted in the annular groove (17) to prevent the mounting sleeve (16) from axially moving relative to the hollow main shaft (1).

8. The solid tire building drum device according to claim 7, characterized in that: A fixing key (18) is fixedly disposed on the mounting sleeve (16), and the fixing key (18) is locked in the long key slot hole (14) to prevent the mounting sleeve (16) from rotating relative to the hollow main shaft (1).

9. The solid tire building drum device according to any one of claims 2 to 8, characterized in that: The groove width of the first accommodating groove (5) is greater than the width of the second connecting rod (6), and the groove width of the second accommodating groove (10) is greater than the width of the fourth connecting rod (11).

10. A molding machine, characterized in that: The invention comprises a solid tire forming drum device as described in any one of claims 1-9.

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