Manufacturing device of sector-shaped sealing part of inner hook of combined tension spring

Abstract

The invention discloses a manufacturing device of a sector-shaped sealing part of an inner hook of a combined tension spring. The manufacturing device with a high qualification rate includes a slot and a strip-shaped groove which are perpendicular to each other, and the left end of the strip-shaped groove is communicated with the right end of the slot, wherein the slot and the strip-shaped grooveare formed in the upper surface of a base body; a small core shaft is connected into the slot, and the horizontal distance between the shaft center and the inner wall of the left end of the slot is greater than the distance between the center of a semicircular part of the sector-shaped sealing part and a connecting part. A spanner body II rotatably sleeves the small core shaft, the gap between thebottom surface of the spanner body and the upper surface of the slot is slightly smaller than the diameter of a steel wire, and the distance between the inner wall of an extending part of the spannerbody and the small core shaft corresponds to the diameter of the steel wire; a large core shaft is connected into the slot and positioned on the front side of the small core shaft, the distance between a central leftward horizontal extension line of the large core shaft and a central forward extension line of the small core shaft corresponds to the distance between the center of the semicircularpart of the sector-shaped sealing part and the connecting part of the inner hook, and the distance between the periphery of the large core shaft and a central rightward horizontal extension line of the small core shaft is slightly smaller than the diameter of the steel wire. A pressing adjustment mechanism is connected to the base body.

Description

technical field [0001] The invention relates to a manufacturing device for a combined extension spring, in particular to a manufacturing device for the fan-shaped sealing part of the inner hook of the combined extension spring. Background technique [0002] Among the many tension springs, there is one such as Figures 1 to 3 The combined tension spring 100 shown, the combined tension spring 100 includes an outer tension spring 101 comprising a coil body 1011 with a conical coil portion 1010 at one end and a coil body 1011 connected to a hook I 1012 at the other end and a hook I 1012 located at the coil body 1011 The fan-shaped closing part 1020 outside the end of the spring coil body 1011 is connected to the fan-shaped closing part 1020, and the other end protrudes outside the end of the tapered spring coil part 1010 and is connected to the inner hook of the connecting part 1021 of the hook II 1022 102, wherein the drag hook I 1012 and the drag hook II 1022 are symmetrical s...

AI Technical Summary

Problems solved by technology

The general process is, firstly, cut the steel wires of other parts of the inner hook 102 whose fan-shaped closing portion 1020 has formed a circular ring after being made by the CNC automatic coiling machine to the sum of the expanded dimensions of the connecting portion 1021 and the hook II 1022 length; then, assemble the connecting portion 1021 corresponding to the steel wire on the aforementioned inner hook 102 into the spring coil body 1011 of the outer extension spring 101 made by the CNC automatic coiling machine, and make the corresponding extension of the hook II 1022 The size part protrudes outside the conical coil part 1010 of the coil body 1011; then, clamp the steel rod whose diameter matches the inner diameter of the hook II 1022 on the vise, and manually pull the hook corresponding to the aforementioned steel wire Bending part of II1022, and then hitting the bent part with a copper hammer to bend the draw hook II1022; The inner pull hook 102 is made into the finished product of the combined extension spring 100 at the same time; the technical problem is that the shape and size of the fan-shaped closing part 1020 of the inner pull hook 102 of the combined extension spring 100 is affected by the skill of the maker, and the quality cannot be effectively controlled. The quality, pass rate and work efficiency are low, so that the pass rate of the finished product of the combined tension spring 100 is also low, and the tension in use cannot meet the specified requirements

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