HD3G three drum machine structure distribution. The D3G three-drum machine is composed of three parts: forming area, carcass bonding area, and belt and tread assembly area. The distribution, system and management of the three areas are mechanical, electrical and pneumatic. The forming zone is the main part of the forming machine and consists of a forming drum drive box, a forming drum, a supporting tail frame, a rolling device, a belt transfer ring, a carcass transfer ring and an unloading device.
The carcass lamination area is composed of a carcass-fitting drum transmission box, a carcass laminating drum, a tailstock, a carcass laminating drum pressing frame, a sidewall feeding frame, a pad rubber, a wire ring storage rack, and a main supply frame. The main feed frame is provided with a centering layer centering correcting device and a fixed length cutting device.
The belt and tread assembly area consists of an auxiliary drum, a belt, a tread supply rack (accessory rack), and a tread storage rack. Each area is equipped with its own laser light () marking system; there is an electric cabinet platform between the main supply shelf and the auxiliary supply rack, and there are 4 main electric control cabinets on it, which are close to the parts of the equipment. Several small pneumatic control cabinets and electrical junction boxes are distributed; there are multiple manual operation buttons and multiple sets of safety photoelectric switches and safety pull rope switches around the equipment, and the console is equipped with three safety carpet switches to make the operation more convenient and safe. .
The HD3G three-drum forming machine's tread supply frame, pad rubber supply frame, and traveler locator are respectively assembled on the auxiliary frame, main frame, and fitting drum drive system. The main electrical cabinet is placed on a 2m high platform. , The platform can store a variety of roll, while the operator and maintenance personnel on the platform to facilitate the observation and maintenance of the two supply rack system. This layout is compact, small footprint, beautiful and easy to operate.
The main technical parameters 2.1 production capacity per class (8h) 120, three shifts of continuous production (3 people per shift). Equipment use ambient temperature 2040; relative humidity 70%. Energy voltage (38038) V, (50X2) Hz, three-phase; input power 45kW; compressed air source 0.7MPa, 55m3h-1, filtration accuracy 5m; vacuum gas source 0.0470.053MPa , 8m3h-1.
Space layout length X width X height 13500mmX12500mmX3300mm; total mass 48000kg. specifications, geometric parameters for tire size 7.00R17.512.00R24.5; bead diameter 444.5622.3mm (17.524.5 inches); minimum bead spacing 220mm; maximum bead Spacing 780mm; Maximum shoulder travel (unilateral) 280mm; Shaped blank minimum diameter 740mm; Shaped blank maximum outer diameter 1160mm.
Molding Process The HD3G three-drum machine uses the world's most advanced tire molding process. The specific process is as follows.
(1) Manually place the left and right travellers on the traveler. Place the left and right travellers on the left and right travellers of the carcass transfer ring and use the traveller to position the left and right travellers.
(2) The sidewalls and gluing are manually placed on the feeding rack of the carcass fitting drum, and then the feeding rack is transferred to the affixing drum. The inner lining layer, the chafer cloth, and the carcass ply are directly attached to the affixing drum by the guides of the feeding rack, the conveying and the stencil device.
(3) The sidewalls, inner liners, bead packs, carcass plys, and cushion rubbers are sequentially opened, conveyed, positioned and bonded, and the joints are pressed together and stitched on the radially expandable carcass fitting drum. The body automatic rolling device rolls the attached carcass curtain cylinder.
Structural Features The mechanical structure of each part of the HD3G Three-Drum Forming Machine is designed in accordance with the optimal processing of the tire molding process characteristics and the easy maintenance of the equipment. The structure is simple and intuitive, with high precision and automation of the tire forming, changing specifications and speed of adjustment. Easy to maintain and other features.
(1) Using the parts and components supplied by well-known manufacturers, the reducer is a series of products manufactured by SEW of Germany or Sumitomo of Japan; the linear guide, ball screw and spline are THK series products of Japan, and the spindle bearing is SKF of Sweden. company's product.
(2) Simplify and optimize the structural design as much as possible to facilitate the lubrication or maintenance of the mechanical mechanism.
(3) As far as possible to meet the tire production process requirements to ensure the quality of molding.
The above three points are the maximum structural features of the HD3G three-drum type molding machine. The following are the descriptions of the technical performance characteristics and structural design of each component.
Carcass Adhering Area (1) The carcass fitting drum has an angular positioning and braking function to ensure that all kinds of materials are placed in the correct position and the pressing is not skewed; the surface of the fitting drum is smooth and the perimeter control is more accurate; the fitting drum has a tire The vacuum suction on the side end and the vacuum on the end of the inner liner ensure that the material is firmly positioned and the secondary expansion ensures that there is no axial turbulence in the rolling of the carcass.
(2) Laminating drum lamination devices are equipped with sidewall compression devices, inner liner lamination devices, and pad rubber lamination devices, respectively, to automatically press joints on sidewalls, inner liners and pads. Together, to avoid insufficient manual strength, uneven, reducing the labor intensity of the operator, improve production efficiency; the carcass tube pressing device automatically rolls on the carcass tube, effectively removes air bubbles in the carcass barrel, makes the tire The body tube fits more tightly, and the device can also be rolled separately after the attached reinforcing rubber strip instead of a manual joint to make the fit closer.
(3) The inner lining material feeding has automatic centering, fixed length and cutting system. The automatic deviation correcting device automatically adjusts the feed bias at the right time to ensure that the material is conveyed in the center; the plate hot knife system is equipped with the pressure plate device, which has the functions of vacuum suction, air blowing after cutting, and pull back function to ensure that the cutting is stable and accurate, and the cutting is not sticky after cutting. material.
(4) The carcass ply feeding and conveying system adopts synchronous belt transmission magnetic block adsorption device to ensure that the material is not skewed on the conveyor belt.
(5) The use of a single-side suture-type automatic suturing device for the carcass joint effectively ensures a uniform joint density and high strength, and reduces the labor intensity of the workers, and improves the degree of automation and production efficiency.
Belt layer and tread attachment area (1) The belt positioning automatic centering width adjusting device avoids component positioning deviation caused by material width fluctuation. (2) Auxiliary drum surface is equipped with distributed magnetic blocks, so that the belt layer can be attached more easily, and skewness can be avoided; the drum surface is covered with a rubber elastic cloth composite part, effectively eliminating the drum surface gap caused by the expansion of the sector plate; drums Zhanghe adopts double-rod single-cylinder drive to ensure the consistency of the opening and closing of each segment block and the more convenient positioning adjustment. (3) Pre-compression of pre-compression rollers after the belt and tread are attached to prevent deflection during transfer and final compression.
Carcass and belt and tread assembly transfer area (1) The left and right traveller positions the traveler at the same position as the fitting drum. The carcass transfer ring is clamped by the magnetic block and is contacted by the plane. Form to ensure that the traveler is vertical and coaxial. (2) The three sector blocks of the carcass gripper are all equipped with distributed magnetic blocks, and the side-clamping sector blocks are also equipped with vacuum suction cups, which are firmly clamped and ensure the cylindricity, and the outer end of the carcass barrel has 24 The support piece supports (3) The two transfer rings on the bed are equipped with mechanical positioning stoppers at their respective positions to ensure accurate transmission and positioning.
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