Automatic unloading, clamping and molding device for galvanized iron tubes and a manufacturing method thereof

Abstract

An automatic unloading, clamping and molding device for galvanized iron tubes and a manufacturing method thereof are used to position at least a crude pipe sleeve at a material strip and drive the crude pipe sleeve to pass through a positioning segment, a molding segment, a reshaping segment and unloading segment in a molding device for development of a plurality of graspable claw portions on the sleeve wall of the crude pipe sleeve and mass-production of stable-quality and low-manufacturing-cost pipe sleeves, each of which has a plurality of graspable claw portions.

What is claimed is: 
     
         1 . An automatic unloading, clamping and molding device for galvanized iron tubes, installed along a travel path of a material strip for development of a plurality of graspable claw portions on the sleeve wall of a pipe sleeve and comprising:
 a positioning segment, used to position a crude pipe sleeve at the material strip;   a molding segment, provided with a plurality of molding tools with which a plurality of molding areas are molded on the sleeve wall of the crude pipe sleeve in advance wherein each of the molding areas has a crude claw portion and a hollowed-up portion around the crude claw portion;   a reshaping segment, provided with a plurality of reshaping tools with which each of the crude claw portions in every molding area is reshaped, that is, the crude claw portions are bended inward from the sleeve wall of the crude pipe sleeve for development of the graspable claw portions at the crude pipe sleeve; and   an unloading segment, provided with an unloading tool with which the crude pipe sleeve is separated from the material strip for development of the pipe sleeve with the graspable claw portions.   
     
     
         2 . An automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 1  wherein the positioning segment further comprises at least a positioning tool with which a pilot hole for positioning the crude pipe sleeve is created on the material strip such that the crude pipe sleeve is fixed in the pilot hole, which has been opened at the material strip in advance, and positioned at the material strip. 
     
     
         3 . An automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 1  wherein the molding segment further comprises a plurality of cutting areas, each of which is provided with the molding tools in pairs, such that a pair of molding areas is developed on each crude pipe sleeve passing through each of the cutting areas. 
     
     
         4 . An automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 1  wherein the reshaping segment further comprises a plurality of bending areas, each of which is provided with the plurality of reshaping tools, such that the plurality of crude claw portions on each crude pipe sleeve passing through every bending area are bended inward from the sleeve wall of the crude pipe sleeve simultaneously. 
     
     
         5 . An automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 1  wherein the unloading segment further comprises a cut-off segment with a cut-off tool with which the material strip is cut off after the crude pipe sleeve is separated from the material strip. 
     
     
         6 . An automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 1  wherein the molding device further comprises a plurality of alignment modules which are distributed at both sides of the travel path of the material strip in the molding device such that the material strip is moved along the travel path in the molding device due to the alignment modules. 
     
     
         7 . A manufacturing method of an automatic unloading, clamping and molding device for galvanized iron tubes, comprising:
 a positioning step, used to provide a material strip as well as a crude pipe sleeve to a molding device and position the crude pipe sleeve at the material strip;   a molding step, used to create a plurality of molding areas on the sleeve wall of the crude pipe sleeve in the molding device in advance such that each of the molding areas has a crude claw portion and a hollowed-up portion around the crude claw portion;   a reshaping step, used to reshape each crude claw portion at every molding area in the molding device such that the crude claw portions are bended inward from the sleeve wall of the crude pipe sleeve and the graspable claw portions are developed on the crude pipe sleeve; and   an unloading step, used to separate the crude pipe sleeve from the material strip in the molding device for development of the pipe sleeve with the graspable claw portions.   
     
     
         8 . A manufacturing method of an automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 7  wherein the molding step is to create the molding areas in pairs on each of the crude pipe sleeves. 
     
     
         9 . A manufacturing method of an automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 7  wherein the reshaping step is to bend the plurality of crude claw portions inward from the sleeve wall of the crude pipe sleeve simultaneously. 
     
     
         10 . A manufacturing method of an automatic unloading, clamping and molding device for galvanized iron tubes as claimed in  claim 7  wherein the unloading step comprises a cut-off step through which the material strip is cut off after the crude pipe sleeve is separated from the material strip.