Spring machine automatic feeding device

Abstract

The invention relates to the technical field of spring manufacturing machinery, in particular to an automatic feed device for a spring forming machine. The automatic feed device comprises a pull rod rest constant-force mechanism, a feed acceleration and deceleration mechanism and an alarming safety mechanism. The pull rod rest constant-force mechanism adopts a fixed pulley mechanism. A counterpoise is hung on a fixed pulley. The axis of the fixed pulley is fixedly connected with a pull rod. When the pull rod is stressed due to the fact that a wire is pulled, the fixed pulley is an equal force arm mechanism, the pull rod can reset by using the counterpoise, simple structure is achieved, the stress of the pull rod is kept fixed, the stress of the wire is constant without deformation, the feed quality of the spring forming machine is guaranteed, and the feed requirements for spring forming machine production are satisfied. The feed acceleration and deceleration mechanism controls the feed motor according to analog proximity switch sensing and distance change of an acceleration and deceleration cam to allow the tension of the spring wire to be kept fixed and not to change due to different speeds. The alarming safety mechanism can automatic shut down device when wire winding and breaking caused by external reasons occur, damage to the device can be avoided, and the safety of operators can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of spring manufacturing machinery, in particular to a feeding device for producing springs, which adapts to the production speed of the spring machine, automatically adjusts the feeding speed, maintains a fixed wire tension, and can avoid deformation or strain of the wire. Spring machine production demand. Background technique [0002] Such as figure 1 , 2 As shown, the known spring machine 90 and the automatic feeding device 100, the automatic feeding device 100 sends the wire 101 through the pull rod 102 and then enters the spring machine 90 for forming. figure 2 As shown, the automatic feeding device 100 generally has a jog switch 103 and a return spring 104, and the return spring 104 pulls the pull rod 102. When the spring machine produces springs, the pull bar 102 of the automatic feeding device 100 is stressed to make the jog switch 103 act, start the feeding motor, and rotate the reel. When the p...

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Problems solved by technology

[0004] 1. The rotation speed of the feeding device is only inching and stopping. When the production speed of the spring machine is fast, the feeding device will feed the material in an inching manner, causing deformation or twisting of the wire

[0005] 2. The wire diameter range of the spring machine and the tension of the return spring are closely related to the wire diameter of the spring wire. Different wire diameters need to replace or add springs, which is time-consuming and often caused by inappropriate tension when producing springs. Defective products increase

[0006] 3. If Figure 3a , 3b , 3c, the return spring 104 is due to the speed of the spring machine, and the force exerted by the return spring on the wire is uneven due to different deformations, resulting in damage to the wire

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