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The skeleton of the building column beam is the steel bar, and the bearing capacity of the column beam is closely related to the positioning of the internal steel bar. The fixed method is to bundle it with the low carbon steel wire of (1822). The length of the bundling wire is determined by the thickness of the steel bar. The specifications are 200mm, 250mm, 300mm, 350mm, 400mm, and 450mm. They are cut from the low carbon steel wire of the large pan head. The investigation found that the method of blanking the wire on the construction site has always used the old method of old, that is: in the large bundle of low-carbon steel wire raw materials, arbitrarily take out (100200) coil wire, with the old-fashioned file along the circumference Directional shearing obtains the segment yarn; there are also some site sites that use the wheel cutter to cut the segment along the circumference, and the cutting operation process is very unsafe. The common problems in these backward feeding methods are as follows: (1) It is easy to entangle the small-sized filaments in the large bundle of filaments, and it takes time and expense to peel off the silk; (2) the small filaments along the circumference Directional shearing is based on visual inspection and splitting. The length of the cutting is different. The length of the length of the bundle is not directly discarded. (3) The steel bar binding workers often reduce the size and size of the scissors. It is convenient for the thick and thin steel bars to be bundled, and the materials are artificially wasted. For a building, although the steel bar binding wire is a small material, the amount used in the entire construction industry is considerable, and waste and safety hazards cannot be underestimated. .
The working principle of incomplete gear transmission mechanism is made of low-carbon steel wire by multi-drawing, annealing, galvanizing and other processes. The diameter of the material is (0.61.3)mm. The plasticity and toughness are good, and the strength and hardness are low. The cutting processing force is small, and it is easy to realize the automatic shearing and cutting [1]. The design is controlled by the combined incomplete gear mechanism-gap mechanism: automatic feeding when the incomplete gear mechanism is in the meshing zone; in the non-meshing zone When cutting and cutting, it is better to finish the blanking process from the large bundle of filaments to the segment. Schematic diagram of the structure of the incomplete gear transmission mechanism, as shown, its working principle: starting the power supply, the motor of the unloader is electrically driven to drive the driving pulley 1 to rotate, and the driven pulley 2 and the coaxial worm 3 are synchronously rotated by the V-belt transmission. The speed reduction mechanism composed of the worm 3 and the worm wheel 4 decelerates the output shafts O1 - O1. Then the working mechanism is divided into two transmissions to achieve fixed length feeding and shearing cutting.
In the working process of the fixed length feeding transmission line, the output shaft O1―O1 is connected with the incomplete gear 5, and the Beijing lampblack purifier and the meshing gear 7 thereof constitute an incomplete gear mechanism to realize the clearance movement, and the gear shaft 7 has a gear 9 at the right end of the coupling shaft O2―O2 And the gear 10 of the equal number of teeth is meshed, so that the shaft O3 - O3 and the shaft O2 - O2 are alternately rotated and stopped alternately, and the pair of equal diameters on the left end of the shaft O3 - O3 and the shaft O2 - O2 are also made. The wire feeding wheels 13 and 17 realize synchronous constant speed rotation and stop operation, and as a result, the steel wire floating between the two wire feeding wheels is fixedly fed under the frictional force. The feed length depends on the number of teeth of the incomplete gear 5. As long as the number of teeth of the incomplete gear 5 is changed, the rotation time of the wire feed wheel can be changed to meet the feeding requirements of different specification lengths.
Working process of cutting and cutting transmission line The output shaft O1―O1 is connected to the cam 6 at the right end, and it is always in a rotating state with the shaft O1―O1. In the stage of meshing of the incomplete gear 5 and the gear 7, the roller push rod 8 and the cam 6 The base circle is in contact, so the roller pusher 8 is at rest. When the incomplete gear 5 meshes with the gear 7, the roller pusher 8 starts to contact the lift arc surface of the cam 6, pushes the roller push rod 8 upward, and swings the swing lever 10 to the upper right and the lower left, forcing the cutter 12 to overcome The spring 14 is moved downward until the low carbon steel wire 16 passing through the blank die 15 is cut to complete the cutting. As the shaft O1 - O1 continues to rotate, the roller push rod 8 is in contact with the return arc of the cam 6, and the cutter 14 is lifted under the action of the spring 14 under the pressure. Then repeat the next cycle to achieve fully automatic cutting.