A spring structure includes a coil-shaped spring portion including multiple coil-shaped unit springs having a same inner diameter center axis, and alternately arranged at regular intervals such that a wire rod of one of the coil-shaped unit springs and a wire rod of a remaining one of the coil-shaped unit springs overlap each other; and a support portion having a non-spring structure, the support portion being connected with each of the coil-shaped unit springs and supporting the coil-shaped spring portion, thereby providing the support portion and the coil-shaped spring portion that are formed integrally with each other.

A spring structure includes a coil-shaped spring portion including multiple coil-shaped unit springs having a same inner diameter center axis, and alternately arranged at regular intervals such that a wire rod of one of the coil-shaped unit springs and a wire rod of a remaining one of the coil-shaped unit springs overlap each other; and a support portion having a non-spring structure, the support portion being connected with each of the coil-shaped unit springs and supporting the coil-shaped spring portion, thereby providing the support portion and the coil-shaped spring portion that are formed integrally with each other.

The present invention relates to a selecting device to be disposed downstream of a springs forming device of a springs forming machine. The selecting device may include an inlet adapted to receive springs formed in the springs forming device, outlets adapted to eject each of the springs from the selecting device, means for selectively conveying each of the springs entering the selecting device through the inlet towards the outlets, and means to form conduits to connect the inlet to the outlets. The selecting device may include means for generating a depression in at least one of the conduits and means for generating a compressed air flow directly inside the selecting device at one of the conduits.

The present invention relates to a selecting device to be disposed downstream of a springs forming device of a springs forming machine. The selecting device may include an inlet adapted to receive springs formed in the springs forming device, outlets adapted to eject each of the springs from the selecting device, means for selectively conveying each of the springs entering the selecting device through the inlet towards the outlets, and means to form conduits to connect the inlet to the outlets. The selecting device may include means for generating a depression in at least one of the conduits and means for generating a compressed air flow directly inside the selecting device at one of the conduits.

A mechanism for producing coil springs (10) includes a winding stage (110) for engaging with a wire (20) and deforming the wire (20) to coil windings as the wire (20) moves through the winding stage (110). Further, the mechanism comprises a feed mechanism (120) configured to feed the wire (20) to the winding stage (110). Further, the mechanism comprises a rotary cutter (130). The rotary cutter (130) is configured to cut the deformed wire (20) into portions forming separate coil springs (10) and a blade (135) which is driven for rotation about a stationary rotation axis.

A servo-rotating all-function tool module is provided for use with a spring forming machine and includes an axle rotating tool module and a servo transmission module assembly. The axle rotating tool module is rotatably mounted, in combination with an axle of the rotary axle assembly of the spring forming machine, to a front wall board and includes an oscillating base and a tool. The oscillating base is rotatably mounted to the rotary axle assembly. The tool is mounted to an end of the oscillating base. The servo transmission module assembly is mounted to the spring forming machine and includes a servo moving ring circumferentially surrounding the oscillating base for driving the oscillating base to oscillate in all directions to thereby cause the tool to press down or lift upward.

A servo-rotating all-function tool module is provided for use with a spring forming machine and includes an axle rotating tool module and a servo transmission module assembly. The axle rotating tool module is rotatably mounted, in combination with an axle of the rotary axle assembly of the spring forming machine, to a front wall board and includes an oscillating base and a tool. The oscillating base is rotatably mounted to the rotary axle assembly. The tool is mounted to an end of the oscillating base. The servo transmission module assembly is mounted to the spring forming machine and includes a servo moving ring circumferentially surrounding the oscillating base for driving the oscillating base to oscillate in all directions to thereby cause the tool to press down or lift upward.

A servo-rotating all-function tool module is provided for use with a spring forming machine and includes an axle rotating tool module that is mounted, together with an axle, to a front wall board and includes a tool and an axle slide base mounted to the axle, so that the axle slide base is acted upon by a force to slide along the axle, the tool is caused to press downward or return upward. A servo transmission module assembly is mounted to the spring forming machine to provide a driving force for causing the axle slide base to slide along the axle. Since the tool module is mounted, together with the axle, to a front wall board of the spring forming machine, the direction in which the tool approaches a wire can be varied by rotating the axle in order to conduct operations of bending at different angles and twisting/looping.

A servo-rotating all-function tool module is provided for use with a spring forming machine and includes an axle rotating tool module that is mounted, together with an axle, to a front wall board and includes a tool and an axle slide base mounted to the axle, so that the axle slide base is acted upon by a force to slide along the axle, the tool is caused to press downward or return upward. A servo transmission module assembly is mounted to the spring forming machine to provide a driving force for causing the axle slide base to slide along the axle. Since the tool module is mounted, together with the axle, to a front wall board of the spring forming machine, the direction in which the tool approaches a wire can be varied by rotating the axle in order to conduct operations of bending at different angles and twisting/looping.

The coil spring manufacturing device includes a first continuous material mounting portion, a second continuous material mounting portion, a straightener, a cutter, a short material mounting portion, and a coiling machine. The material reeled out from a first continuous material or a second continuous material is cut by the cutter. The coil spring manufacturing device can switch a process among a first continuous material coiling process of manufacturing a coil spring by using the first continuous material, a second continuous material coiling process of manufacturing a coil spring by using the second continuous material, and a short material coiling process of manufacturing a coil spring by using the short material.