Hoorizental Coil Former For Driving a Leaf of a Sliding Door

 

The inventive coil former may be used for driving the leaf of a sliding door. In one embodiment, the sliding door is arched, while in another embodiment, the door is horizontal. The inventive coil former may be used for other applications as well, such as feeding devices, handling equipment, and transport systems. It may include a slanted surface and a locating edge. Various types of these structures are used in the manufacture of the invention.

A coil former can be fabricated using an injection moulding process, and is preferably made from plastic material with good injection molding properties. Natural PA6-30H, for example, can be used. The material should be flame resistant and continuously heat resistant up to 130 deg. Celsius. Moreover, the inventive coil former has a guiding device 9 that is shaped like a recess. The guiding device is arranged to align with adjacent coil formers in a defined manner.

A first coil of the inventive coil former is made of wire. The winding wire is guided in a defined position along a wire feed assistance. A clamping device 6 receives the winding cable at a defined position along the wire feed. The holding device 4 has a nose protruding beyond the flange 3. The guiding wire is then guided to a subsequent coil former. During this process, the winding is regulated by a clamping device.

A further feature of the inventive coil former is a reception guide on the entry side. The reception guide helps in guiding the winding wire within the wire reception. The winding wire enters the guide before proceeding with the body winding. The reception guide enables the winding wire to exit the wire reception after the body winding is completed. The guiding device also facilitates the winding process. Once the coil former is coiled, it should be able to be wound on a cylindrical surface.

The inventive coil former comprises a nose that protrudes beyond the flange 3. The inclination defines the starting position of the coil. The coil is wound onto the body. The inclination defines the start position of the coil. The flange supports the coil. The inclination and the nose help in the wire feeding. Once the coil is wound, it must be aligned with the flange. The inclination defines the starting position.

The inventive coil former preferably comprises an injection moulding part. Its main purpose is to make a coil. The invention enables the manufacture of a slitted-coil former. The inventive coil former is a ring-shaped tool. The flange is ideally made of a plastic material with good injection moulding properties. The inclination allows the winding mandrel to pass through several coil formers.