Full automatic tread abutting machine and abutting method thereof

Abstract

The invention relates to a full automatic tread abutting machine and an abutting method thereof. In a conveying process, tread rubber is moderately rolled, and the cut tread rubber shorter than the surface perimeter of a tire carcass is spread and stretched. The tread abutting machine mainly comprises a base, a host machine, a separating and combining pressing roller device, a cutting device, a back conveying device and a front conveying device, wherein the front conveying device is provided with a front pressing roller assembly, a middle pressing roller assembly and a conveying roller assembly which are installed at the upper parts of panels at two sides; the front pressing roller assembly comprises a group of support rollers and front pressing rollers of which the vertical center lines are superposed, and a clearance is left in between for the tread rubber to pass through; the support rollers and the front pressing rollers are respectively arranged by shafts between the panels at two sides above a conveying roller drum; the middle pressing roller assembly comprises a middle roller drum sleeved on a middle roller drum shaft; two ends of the middle roller drum shaft are arranged by shafts between the panels at two sides through bearings and expansion sleeves; at least the bearing and the expansion sleeve at one side are connected with one middle pressing roller swinging arm; and the middle pressing roller swinging arm is simultaneously connected with a driving stem of a swinging cylinder.

Description

technical field [0001] The invention provides a fully automatic tread bonding machine and a bonding method thereof, which are specifically applied to the tread rubber bonding process in the tire retreading process and belong to the field of rubber machinery. Background technique [0002] Due to the popular use of vehicles such as automobiles and airplanes, a large number of scrap tires need to be disposed of every year. Not only formed a waste of rubber resources, but also brought a series of problems of environmental pollution. At present, for old tires whose tread patterns are worn out, the method of retreading is generally adopted to put them into recycling again. [0003] The existing tire retreading equipment uses a grinding machine to grind the tread of the old tire, then adheres the middle pad glue to the carcass, and then sets the new annular tread on the carcass, after pressing and attaching Composite parts are formed, and finally sent to vulcanization tanks for v...

AI Technical Summary

Problems solved by technology

In the process of fitting the annular tread, due to the hard carcass and the high adhesiveness of the middle pad attached to the surface of the carcass, it is often difficult to accurately fit the annular tread and the carcass, and deviations often occur. Or there are air bubbles between the annular tread and the carcass, so the tightness of the composite processing of the components is poor

[0004] At present, there is another retreading method that directly wraps the strip-shaped tread rubber on the surface of the carcass. Although it can solve the problem of deviation between the tread and the carcass set, there is a certain gap between the cut tread rubber and the circumference of the carcass surface. Errors often lead to insufficient length of tread rubber or excess head. These problems need to be remedied manually, resulting in additional workload for manual tire installation.

[0005] For example, when the length of the tread rubber is not enough, manual stretching is usually used. Excessive stretching of the tread rubber will cause local deformation and affect the bonding between the tread rubber and the carcass, and local air bubbles will also be formed; When the length of the surface glue is too long, it needs to be cut off manually, which will cause a certain amount of material waste

[0006] The above existing tread rubber bonding processing methods all have the problem of low processing accuracy. For a tire of a certain specification and model, the length of the tread rubber is a fixed value after cutting, and lacks the dynamic adjustment ability in the bonding process. , it is difficult to overcome the errors caused by the inherent elasticity of production equipment and materials, which not only directly affects the quality of tread rubber bonding, but also leads to low refurbishment production efficiency

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