Tyre forming drum and tyre forming machine provided with same

Abstract

The invention provides a tyre forming drum and a tyre forming machine provided with the same. The tyre forming drum comprises a main shaft and two half-drum devices which sleeve the main shaft, wherein each half-drum device comprises an outer shaft which sleeves the main shaft, an interlocking mechanism, an anti-package capsule and an anti-package boosting mechanism, the interlocking mechanism comprises a first locking mechanism and a second locking mechanism which are in alternative type locking, the first locking mechanism sleeves the main shaft and is fixedly connected to the outer shaft, the second locking mechanism sleeves the outer shaft; the anti-package boosting mechanism comprises a plurality of boosting plates which are uniformly distributed along the periphery and a plurality ofboosting connecting rods; when the first locking mechanism locks the main shaft and the second locking mechanism loosens the outer shaft, the second locking mechanism can axially move along the outershaft to push the boosting plates to turn over towards the radial outer sides of the half-drum devices, so that boosting force is provided for the anti-package capsule. The forming drum provided by the invention has the advantages of being consistent in anti-package height, good in anti-package periphery continuity, uniform in stress, high in production efficiency and the like, and also can meetthe requirements of light weight, simplification and small size.

Description

technical field [0001] The invention relates to the technical field of tire building equipment, in particular to a tire building drum applied to a tire building machine. Background technique [0002] The tire building drum is the executive mechanism of tire building, which directly affects the quality of tire building. [0003] At present, the existing mechanical turn-up forming drum realizes the turn-up action by driving a number of turn-up rod assemblies evenly distributed in the circumferential direction. Although it has the advantages of uniform turn-up height and high production efficiency, there are still differences in the turn-up circumference. Continuous, deep indentation and other problems. [0004] While the existing capsule turn-up forming drum has the advantages of good turn-up circumference continuity and uniform force, each turn-up capsule needs to be associated with a corresponding booster mechanism. [0005] When the booster mechanism is specifically a boo...

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Problems solved by technology

[0003] At present, the existing mechanical turn-up forming drum realizes the turn-up action by driving a number of turn-up rod assemblies evenly distributed in the circumferential direction. Although it has the advantages of uniform turn-up height and high production efficiency, there are still differences in the turn-up circumference. Continuous, deep indentation and other problems

[0004] While the existing capsule turn-up forming drum has the advantages of good turn-up circumference continuity and uniform force, each turn-up capsule needs to be associated with a corresponding booster mechanism

[0005] When the booster mechanism is specifically a booster capsule, the disadvantages are: the inflation speed of the capsule device is slow, which greatly affects the production efficiency, and the quality of the reverse package is unstable. In addition, the capsule is easily damaged, has a short service life, and needs to be replaced frequently

[0006] When the booster mechanism is specifically a number of booster plates distributed in a circle, although it has the advantages of uniform turn-up height, high production efficiency, good turn-up circumference continuity and uniform force, it is necessary to set an additional drive The mechanism is used to push the booster plate to turn over, the structure is complex and takes up space, and it is difficult to meet the requirements of light weight, simplification and miniaturization of the tire building drum

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