JP2002274707A - Winding method for carrier tape and package for carrier tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding method for a carrier tape and a package by the method preventing winding disorder during storage, conveyance or the like when winding the carrier tape on a spool and preventing bending and meandering when rewinding. SOLUTION: When winding the carrier tape on the spool, rotational torque of a winding motor is varied and the carrier tape is continuously wound by changing tension.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage package for storing, transporting, and mounting electronic components. The package has a function of protecting the electronic components, aligning the electronic components for mounting on a printed circuit board, and taking out the package. The present invention relates to a method of winding a plastic carrier tape made on a spool and a package by the method.

[0002]

2. Description of the Related Art Surface mounting of electronic components has been progressing in response to rationalization of production and production of various kinds in small quantities, and plastic embossed carrier tapes have attracted attention as a packaging form applicable to this. In addition, rationalization has been promoted in the work of inserting electronic components into this embossed carrier tape and sealing the cover tape, which is a cover material, in order to reduce the frequency of replacing the reel around which the carrier tape is wound,
A plurality of rows are called a spool called a spool which can increase the length of a carrier tape wound around one roll. In order to wind a spool on a reel, a method has been employed in which the reel motor is rotated while rotating the reel motor or the tension applied to the carrier tape is kept constant.

[0003]

SUMMARY OF THE INVENTION The present invention is to solve the problem which occurs in the conventional spool winding. By controlling the tension applied to the carrier tape, the carrier tape wound around the spool can be stored and transported. It is an object of the present invention to provide a winding method that does not cause any curling or curling due to winding strength or meandering of winding habit.

[0004]

According to the present invention, there is provided a method of winding a carrier tape around a carrier tape, wherein the winding is performed while changing the tension applied to the carrier tape. It is preferable that the tension applied to the carrier tape changes in accordance with the winding diameter on the reel, and in particular, increases as the winding diameter increases. The present invention also provides
It is a package of the carrier tape wound by the above method.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The size and shape of a spool winding reel used in the present invention are not particularly limited, but the radius of rotation of the winding start portion of the carrier tape is smaller than that of the winding end portion. The corresponding circumferential distance is short. For this reason, the carrier tape wound around the reel needs to move a fixed amount in the width direction within a short length near the start of the winding as compared with the end of the winding in the flow direction, and the winding habit tends to increase.

According to the spool winding method of the present invention, the rotation torque of the motor for rotating the reel, which is used to apply tension to the carrier tape, is set to a low value at the start of winding, and the winding habit that tends to occur from the start to the middle of winding. Suppress. Furthermore,
By increasing the rotational torque as the winding diameter increases in the middle and at the end of the winding, the tension applied to the carrier tape is increased, so that the winding during storage and transport can be prevented from breaking. The tension applied to the carrier tape is preferably changed continuously, but may be changed stepwise.

[0007]

EXAMPLES The present invention will be described below by way of examples, which are merely examples, and the present invention is not limited thereto. As the carrier tape, an 8 mm wide × 4 mm pitch molded from a PS (polystyrene) sheet having a thickness of 0.3 mm was used and wound in a spool shape.
The reel core used was a spool winding reel having a width of 80 mm and a side plate outer diameter of 330 mmφ. The spirally wound reel, which has been conventionally used, starts winding the finished product, but the tension applied to the carrier tape is 1 at the beginning of winding.
It was set to 00 g, and the winding torque was gradually increased according to the winding diameter so that the tension became 300 g at the end of winding, and the winding motor was wound 400 m in length.

[0008]

[Comparative Example] [Comparative Example 1] A carrier tape molded in the same manner as in the example was almost 100 times from the start to the end of winding.
The rotation torque of the winding motor was set so that the tension of g was kept constant, and a carrier tape having a length of 400 m was wound. [Comparative Example 2] A carrier tape having a length of 400 m was set by setting the rotation torque of a winding motor so that a tension of about 200 g was kept constant from the beginning to the end of winding a carrier tape molded in the same manner as in the example. Wound tape. [Comparative Example 3] A carrier tape having a length of 400 m was set so that a tension of about 300 g was kept constant from the beginning to the end of winding of a carrier tape formed in the same manner as in the example, and a winding motor was set. Wound tape.

The carrier tape wound in a spool shape in each of Examples and Comparative Examples 1 to 3 was put into a transport line, collected, and evaluated as described below. (1) Unwinding: When the carrier tape wound into a spool was rewound, it was confirmed that the carrier tape could be smoothly unwound without being caught. The sample having no roll collapse was rated as ○, and the one with roll collapse was rated as ×. (2) Bending: The carrier tape wound in a spool shape was rewound, the carrier tape was sampled at a length of 250 mm, and the maximum distance from the straight line was measured.

[0010]

[Table 1]

[0011]

[Table 2]

As shown in Table 1, the carrier tape using the spool winding method according to the embodiment of the present invention has no particular problem.
It was useful as a spool winding method. As shown in Table 2, the carrier tapes using the spool winding methods of Comparative Examples 1 and 2 and 3 were bent or collapsed.

[0013]

The bend and collapse of the carrier tape, which are problems of the spiral winding method according to the present invention and the conventional spool winding method, can be greatly reduced by making the rotation torque of the winding motor variable. , Taping work is performed smoothly.

Claims (4)

[Claims] 1. A method for winding a carrier tape onto a spool, wherein the carrier tape is wound while changing the tension applied to the carrier tape. 2. The method for winding a carrier tape according to claim 1, wherein the tension applied to the carrier tape changes according to a diameter wound on a reel. 3. The method for winding a carrier tape according to claim 1, wherein the tension applied to the carrier tape increases as the winding diameter on the reel increases. 4. A package of a carrier tape wound by the method according to claim 1.