JPS6054805B2 - coil winding device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a coil winding device.

The applicant has been able to relatively change the gap settings between each of the set of wrapper rolls and the mandrel in a standby state before winding the strip, so that the rolls on the exit side of the strip can reliably hold the strip during coil winding. In addition, even if the outer diameter of the coil is not a perfect circle, even if the outer diameter of the coil is not a perfect circle, all rolls can reliably press the outer circumferential surface of the coil, making it possible to wind a tight coil. As shown in FIG. 1, a mandrel 5 for winding a coil of the strip 1, at least two wrapper rolls 4 supported by a swingable roll support 6 around the mandrel 5, and a side of each wrapper roll opposite to the mandrel 5. A coil winding device has been developed which has a spring device 13 located at the center of the invention and which urges the wrapper roll 4 to be pressed against the mandrel 5. In this invention, the relationship between the swingable roll support 6 and the guide 3 is not clarified, and there is a problem in its practical application.

When winding a board, if the gap between the roll 4 and the guide 3 is small, the roll drive motor will trip due to interference between the roll 4 and the guide 3 when the roll support 6 swings, causing a miss-coil. On the other hand, if the gap is large, the plate will not wrap around the mandrel 5, and the plate will get stuck between the guide 3 and the roll 4, causing miscoiling. The same can be said about the guide 3' and the roll 4'. The purpose of the present invention is to eliminate these disadvantages, and to make it possible to maintain a required predetermined gap without the roll 4 and guide 3 interfering with each other even when the roll support 6 swings. This is what I did.

The embodiment shown in the drawings will be described below.

2 and 3 show enlarged detailed views of the vicinity of the guide tip in FIG. 1, in which 3 is a guide, 4 is a wrapper roll, 5 is a mandrel for winding the strip, and 6 is two wrapper rolls 4. The roll support supports the axis 8.
is swingably supported. These are all members having the same effect as those shown in FIG. 1 with the same reference numerals. In the present invention, in such a coil winding device, at the tip of the guide 3,
A notch is formed into which the guide piece 21 that constitutes a part fits, and the guide piece 21 is swingably incorporated into this through the pin joint 22.
1 is provided with a spring 23, and normally the action of this spring presses the guide piece 21 against the notch step a to prevent tilting due to its own weight and impact from the plate.

Furthermore, a roll support 6 is provided at the tip of the guide piece 21.
A claw 24 is attached that slides into contact with the outer peripheral edge of a button 25 attached to the button 25. Since the structure is as described above, when the roll support 6 that supports the wrapper roll 4 swings, the guide piece 21 is pushed due to the sliding action between the button 25 attached to the roll support 6 and the claw 24 that slides on the button 25. The guide piece 21 can be rotated around the pin joint 22, and the gap between the wrapper roll 4 and the guide piece 21 can be maintained substantially constant, and no interference will occur between them.

Because of the structure and operation described above, it is possible to greatly reduce the number of miscoils and obtain a highly efficient coil winding device, which is particularly effective when applied to winding thin coils.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram of the main parts of a coil winding device before the present invention is implemented. FIGS. 2 and 3 are enlarged detailed views of the vicinity of the guide tip portion in which the present invention is implemented. 3...Guide, 4...Ratsupar roll, 5...Mandrel, 6...Roll support, 8...Shaft, 13... ...Bullet device, 21...Guide piece, 22...Pin joint, 23...Spring, 24...
・Claw, 25...button.

Claims (1)

[Claims] 1. A mandrel for coil winding, at least two wrapper rolls supported by a swingable roll support around the mandrel, and a wrapper roll located on the opposite side of the mandrel of each wrapper roll and attached so as to press the wrapper rolls against the mandrel. In a coil winding device having an elastic device that generates force, a notch is provided at the tip of the guide into which a guide piece that forms part of the guide fits, and the guide piece is inserted into the notch through a pin joint so as to be swingable. A spring attached to the guide piece presses the notch step so that it is always integrated with the guide piece, and at the tip of the guide piece there is a claw that slides into contact with the outer periphery of the button attached to the roll support. A coil winding device characterized in that it is equipped with a coil winding device.