Retarded adhesive prestressed steel bar outer wrapped jacket extrusion forming machine

Abstract

The invention discloses a retarded adhesive prestressed steel bar outer wrapped jacket extrusion forming machine, comprising a hopper, a forming machine body, a forming machine head and a motor; the external surfaces of the forming machine body and the forming machine head are respectively provided with a heating sleeve, and the forming machine body and the forming machine head are connected by a flange; the forming machine body comprises a charging barrel and a threaded rod arranged in the charging barrel, the threaded rod is connected with a belt and the motor by a belt wheel, the exterior of the forming machine head is of a T shape, the forming machine head consists of a mold cover and a barrel-shaped mold core which is fixedly connected in the mold cover and vertical to the forming machine body, an annular opening is formed between the outlet of the mold cover and the mold core which is internally provided with a coaxial core tube, the two ends of the core tube are provided with fixing rings which are connected with the mold core by spot welding, and a clearance is arranged between the core tube and the mold core. The retarded adhesive prestressed steel bar outer wrapped jacket extrusion forming machine of the invention ensures that retarded adhesive sees no dripping in the forming process of a plastic jacket, thus guaranteeing the quality of retarded adhesive prestressed steel bar.

Description

technical field [0001] The invention relates to an extruding molding machine for slow-bonding prestressed reinforcement sheathing. Background technique [0002] Slowly bonded prestressed steel bar is a new product in my country's prestressed technology at present. It is improved by combining the characteristics of two products of unbonded and bonded prestressed steel bars. Delayed bonded prestressed steel bars include prestressed steel bars, plastic sheaths sheathed outside the prestressed steel bars, and slow-bonding adhesives filled between the plastic sheaths and prestressed steel bars. The unbonded prestressed steel bars include prestressed steel bars, plastic sheaths set outside the prestressed steel bars and anti-corrosion lubricating grease coated on the prestressed steel bars. The plastic sheath of unbonded prestressed steel bars is produced by an extrusion molding machine, which includes: a hopper, a machine body, a machine head, a motor, and a heating jacket arran...

AI Technical Summary

Problems solved by technology

[0003] Compared with the anti-corrosion lubricating grease used for slow bonded prestressed steel bars, the main performance indicators such as density and viscosity are completely different. If the slow gel adhesive is heated above 150 degrees, it will easily Drips are formed, resulting in too little or no slow gel adhesive between the plastic sheath and prestressed steel bars in some parts, thus affecting the quality of slow bonded prestressed steel bars

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