Disclosure of Invention
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a forming drum with a variable working diameter comprises a main shaft group, a reverse capsule-wrapping barrel mechanism, a sliding lock block assembly and a power mechanism;
the sliding lock block assembly comprises a guide plate, a guide disc, a plurality of sliding blocks and a lock block, the guide plate and the guide disc are sleeved on the main shaft group, a slide way is formed between the guide plate and the guide disc, the sliding blocks and the lock block are in one-to-one correspondence, the sliding blocks are embedded in the slide way in a circumferential shape and are fixed with the corresponding lock block, and a gap is reserved between the lock block and the side face of the slide way so as to be conveniently separated from the slide way;
the power mechanism is arranged on the main shaft group, the anti-bag barrel mechanism is detachably connected to the power mechanism, and the power mechanism is used for driving the sliding block to move along the slide way;
the anti-bag barrel mechanism comprises a boosting capsule, an anti-bag capsule, a sealing sleeve and a pressing barrel, the boosting capsule is sleeved on the sealing sleeve, the anti-bag capsule is sleeved on the boosting capsule and clamped with the sealing sleeve, and the pressing barrel is fixed at one end of the sealing sleeve and clamped with the boosting capsule.
The locking block is fixed with the sliding block through a fastening screw, and a screw plug is further arranged in the locking block.
The sealing sleeve is sleeved with a reverse-wrapping spacer ring, a dual-sub-opening ring and a boosting spacer ring, the reverse-wrapping spacer ring is embedded at an opening of a reverse-wrapping capsule, the dual-sub-opening ring is respectively clamped with the reverse-wrapping capsule and the boosting capsule, and the boosting spacer ring is embedded at an opening of the boosting capsule.
The sealing sleeve is provided with a reverse-wrapping annular gas circuit and a boosting annular gas circuit, the reverse-wrapping annular gas circuit is provided with a reverse-wrapping ventilation inner hole, and the boosting annular gas circuit is provided with a boosting ventilation inner hole.
The reverse-wrapping spacer ring is provided with a reverse-wrapping ventilation outer hole, and the boosting spacer ring is provided with a boosting ventilation outer hole.
The improved booster is characterized in that the reverse-wrapping annular grooves are formed in two sides of the reverse-wrapping annular gas circuit on the sealing sleeve, the boosting annular grooves are formed in two sides of the boosting annular gas circuit on the sealing sleeve, the reverse-wrapping sealing rings are installed in the reverse-wrapping annular grooves, and the boosting sealing rings are installed in the boosting annular grooves.
The power mechanism comprises a cylinder body, a piston rod, a cylinder cover, a connecting rod and a connecting rod seat, wherein the cylinder body is fixed with the guide disc, the cylinder cover is fixedly arranged at one end of the cylinder body, one end of the piston rod is connected with the cylinder body in a sliding mode, the other end of the piston rod is connected with the connecting rod seat, the connecting rod seat is installed on the spindle set in a sliding mode, one end of the connecting rod is hinged to the connecting rod seat, and the other end of the connecting rod is hinged to the sliding block.
The cylinder cover is fixed with the compression cylinder body.
The cylinder block is provided with a reverse-wrapping air inlet path connected with a reverse-wrapping annular air path and a boosting air inlet path connected with a boosting annular air path, the width of the reverse-wrapping air inlet path is smaller than that of the reverse-wrapping annular air path, and the width of the boosting air path is smaller than that of the boosting annular air path.
The invention has the advantages and positive effects that:
1. the size of the forming drum can be changed by replacing the reverse bag barrel mechanisms with different diameters, so that the forming drum can meet the production of tires with different sizes, the application range of the forming drum is increased, the configuration quantity of the forming drum for a user is reduced, and the equipment purchase cost is reduced;
2. the variable working diameter building drum can reduce the frequency of building drum replacement for tire manufacturers and improve the production efficiency of the building drum.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, the working diameter of the forming drum is mainly D1 and D2 when the forming drum works, so that the anti-bag-wrapping-drum mechanism needs to be replaced in order to realize variable working diameter, however, in the prior art, in order to ensure the air tightness of the forming drum during working, the anti-bag-wrapping-drum mechanism and the power mechanism are integrated, so that the invention is designed to divide the two parts into separate bodies on the premise of ensuring the air tightness of the forming drum, so as to realize the purpose of replacing different anti-bag-drum mechanisms and locking blocks 5 on the same power mechanism.
The invention provides a variable working diameter forming drum which comprises a main shaft group 1, a bag-turning mechanism, a sliding lock block component and a power mechanism, wherein the sliding lock block component comprises a guide plate 2, a guide disc 3, a sliding block 4 and a lock block 5, the guide plate 2 and the guide disc 3 are sleeved on the main shaft group 1, a slide way 6 is formed between the guide plate and the guide disc, the corresponding sliding block 4 is embedded in the slide way 6 in a sliding mode, and the lock block 5 is fixed on the sliding block 4 and can slide in the slide way 6 along with the sliding block 4.
In order to facilitate replacement of the locking block 5, in the invention, as shown in fig. 4, the locking block 5 is not in contact with two side vertical surfaces of the slide way 6, that is, a gap 7 is reserved between the side vertical surface of the slide way 6 and the locking block 5, and meanwhile, in order to enable the locking block 5 to be separated from the slide block 4, in some examples, a through hole is formed in the locking block 5, a blind hole is formed in the slide block 4, a fastening screw 8 is installed in the through hole and the blind hole to fix the slide block 4 and the locking block 5, and then a screw plug 9 is plugged into the top of the through hole to avoid falling of the screw, when the locking block 5 needs to be replaced, the screw plug 9 is only required to be taken down, and then the fastening screw 8 is screwed out, so that the locking block 5 can be easily taken out from the slide way 6.
In the invention, as shown in fig. 2, the turn-up capsule tube mechanism comprises a boosting capsule 10, a turn-up capsule 11, a sealing sleeve 12 and a pressing tube body 13, wherein the boosting capsule 10 is sleeved on the sealing sleeve 12, the turn-up capsule 11 is sleeved on the boosting capsule 10, the turn-up capsule 11 is clamped with the sealing sleeve 12 to prevent the turn-up capsule 11 from falling off from the sealing sleeve 12, the pressing tube body 13 is fixed at one end of the sealing sleeve 12, the boosting capsule 10 is simultaneously clamped with the sealing sleeve 12 and the pressing tube body 13 to prevent the turn-up capsule 11 and the boosting capsule 10 from falling off, and the turn-up capsule 11 and the boosting capsule 10 can expand during inflation to complete turn-up of the sidewall.
Further, in some examples, a reverse-wrapping spacing ring 14, a dual-sub-opening ring 15 and a boosting spacing ring 16 are sleeved on the sealing sleeve 12, wherein the reverse-wrapping spacing ring 14 is embedded in the opening of the reverse-wrapping capsule 11 to enable the opening of the reverse-wrapping capsule 11 to be always in an open state so as to facilitate inflation of the reverse-wrapping capsule 11, the dual-sub-opening ring 15 is respectively engaged with the reverse-wrapping capsule 11 and the boosting capsule 10 to position and separate the reverse-wrapping capsule 11 from the boosting capsule 10, and the boosting spacing ring 16 is embedded in the opening of the boosting capsule 10 to enable the opening of the boosting capsule 10 to be always in an open state so as to facilitate inflation of the boosting capsule 10.
Further, a turn-up annular gas circuit 17 and a boosting annular gas circuit 18 are arranged on the sealing sleeve 12, a turn-up ventilation inner hole 19 is arranged on the turn-up annular gas circuit 17, a boosting ventilation inner hole 20 is arranged on the boosting annular gas circuit 18, a turn-up ventilation outer hole 21 is arranged on the turn-up spacer ring 14, a boosting ventilation outer hole 22 is arranged on the boosting spacer ring 16, when the turn-up capsule barrel is inflated, gas flow enters the turn-up annular gas circuit 17, the turn-up ventilation inner hole 19 leads to an opening of the turn-up capsule 11, and the turn-up ventilation outer hole 21 on the turn-up spacer ring 14 enters the turn-up capsule 11.
In the invention, in order to ensure the air tightness after the reverse bag cylinder mechanism is connected with the power mechanism, reverse bag annular grooves 23 are respectively arranged on the cylinder bodies of the sealing sleeve 12 positioned at two sides of the reverse bag annular gas path 17, a reverse bag sealing ring 25 is embedded in the reverse bag annular grooves 23, similarly, boosting annular grooves 24 are respectively arranged at two sides of the sealing sleeve 12 positioned at the boosting annular gas path 18, and then boosting sealing rings 26 are embedded in the boosting annular grooves 24, because the reverse bag annular gas path 17 and the boosting annular gas path 18 are positioned at the connecting part of the reverse bag cylinder mechanism and the power mechanism, the air tightness in the inflation process can be effectively ensured after the reverse bag sealing rings 25 and the boosting sealing rings 26 are added.
Further, in the present invention, as shown in fig. 3, the power mechanism includes a cylinder block 27, a piston rod 28, a cylinder cover 29, a connecting rod 30 and a connecting rod seat 31, wherein the cylinder block 27 is fixed to the guide plate 3, the cylinder cover 29 is fixed to one end of the cylinder block 27, one end of the piston rod 28 is slidably connected to the cylinder block 27, and the other end is connected to the connecting rod seat 31, the connecting rod seat 31 is slidably mounted on the main shaft assembly 1, one end of the connecting rod 30 is hinged to the connecting rod seat 31, and the other end is hinged to the sliding block 4, so that when the piston rod 28 extends and retracts under the action of the cylinder block 27, the connecting rod seat 31 can be pushed to move along the main shaft assembly 1, and the connecting rod 30 is driven to move during the movement of the connecting rod seat 31, thereby pushing the sliding block 4 to slide in the slideway 6, and finally driving the locking blocks 5 to lock the sliding blocks 4 to move synchronously.
Specifically, the shapes of the locking blocks 5 may be the same or different, preferably different, as shown in fig. 5, the shapes of the locking blocks 5 are one large and one small, and the corresponding connecting rods 30 also need to be set to one long and one short, the long connecting rod 30 is connected with the smaller locking block 5, the short connecting rod 30 is connected with the larger locking block 5, and the starting angle of the long connecting rod 30 is smaller than the starting angle of the short connecting rod 30.
Specifically, when the anti-bag-wrapping-barrel mechanism and the power mechanism are connected, only the compression barrel body 13 and the cylinder cover 29 need to be fixedly connected through screws.
In some examples, a reverse-wrapping air inlet path 32 and a boosting air path 33 are arranged on the cylinder block 27, wherein the reverse-wrapping air inlet path 32 is connected with the reverse-wrapping annular air path 17 and is used for inflating the reverse-wrapping capsule 11; and the boosting air path 33 is connected with the boosting annular air path 18 and is used for inflating the boosting capsule 10, meanwhile, the width of the reverse-wrapping annular air path 17 is larger than that of the reverse-wrapping air path 32, after the divided reverse-wrapping tube mechanism and the power mechanism are connected, the outlet of the reverse-wrapping air path 32 can be ensured to be absolutely positioned within the inlet range of the reverse-wrapping annular air path 17, the problem that the airtightness is finally influenced because the reverse-wrapping air path and the reverse-wrapping annular air path 17 cannot be aligned due to slight error in the splicing process can be avoided, the reverse-wrapping sealing rings 25 on two sides are matched, the sealing is further reinforced, and similarly, the width of the boosting annular air path 18 is larger than that of the boosting air path 33 so as to achieve the same effect.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.