JP2005035553A - Manufacturing method for carrier tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a good carrier tape for which a positional precision between the feeding perforation and the embossed sections of the carrier tape is stable. <P>SOLUTION: This manufacturing method for the carrier tape uses a manufacturing device for the carrier tape including a feeding device which moves a specified amount of a tape for forming the carrier tape by an intermittent motion, a heating device and a forming device for forming a part of the sheet into an embossed shape, a punching device for manufacturing the feeding perforation of the tape, and an inspecting device which inspects the major dimensions and the shape of the carrier tape. The embossed tape is photographed using a continuous feeding device which continuously feeds the embossed tape separately from the intermittent motion feeding device, and a CCD camera, and the major dimensions and the shape are inspected by an image processing device. Thus, by this manufacturing method for the carrier tape, only good carrier tapes are manufactured. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention manufactures a plastic carrier tape in which a storage pocket is formed out of a package that has the functions of protecting and arranging electronic components for storage, transportation, and mounting, and mounting and mounting on a printed wiring board. It is about how to do.
[0002]
[Prior art]
Surface mounting of electronic parts is progressing due to rationalization of production and support for low-volume, high-mix production, and plastic embossed carrier tape is attracting attention as a packaging form applied to this. As a method of manufacturing this type of carrier tape, a wide thermoplastic resin tape is intermittently supplied to the molding machine, heated to a predetermined temperature in the preheating process, a storage part is formed by embossing, and a feed hole is drilled. However, a method of taking a slit to a predetermined width and taking it up is taken, and is proposed in Patent Documents 1 and 2.
In order to stabilize the insertion and removal of electronic components from and to the embossed carrier tape, strict accuracy is required for the positional relationship between the carrier tape feed hole and the embossed portion which is the storage portion, particularly in the tape ejection direction. .
In the method of manufacturing a carrier tape by intermittently transferring a carrier tape forming tape, the tape is stopped after the tape is transferred at a high speed. Therefore, in the inspection apparatus with one CCD camera, it is necessary to take a wide range of images so that the carrier tape for one transfer is within the field of view of the CCD camera, and there is a problem in inspection accuracy because the resolution is low. .
[0003]
[Patent Document 1]
JP 2002-128018 A [Patent Document 2]
Japanese Patent Laid-Open No. 2002-127241
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems, and a good carrier tape is manufactured by having an apparatus for accurately inspecting the main dimensions and shape of the carrier tape in an apparatus for intermittently transferring the carrier tape. A method for producing a carrier tape is provided.
[0005]
[Means for Solving the Problems]
That is, the present invention relates to a feeding device for transferring a fixed amount of tape for forming a carrier tape in an intermittent operation, a heating device and a forming device for forming a part of a sheet into an embossed shape, and punching for creating a tape feed hole. A carrier tape manufacturing method using a carrier tape manufacturing apparatus including a moving apparatus for moving the apparatus and the punching apparatus, wherein the continuous feeding apparatus and the CCD continuously transfer the embossed tape separately from the intermittent operation feeding apparatus. This is a carrier tape manufacturing method in which only a good carrier tape is manufactured by imaging an embossed tape at a high magnification using a camera and inspecting main dimensions and shapes with an image processing apparatus.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
A detailed description will be given below with reference to FIG. 1 which is an embodiment of the present invention.
The present invention includes a feeding device (6) for transferring a fixed amount of tape for forming a carrier tape by intermittent operation, a heating device (5) and a forming device (4) for forming a part of a sheet into a container shape, In a carrier tape manufacturing apparatus comprising a punching device (3) for creating a tape feed hole and a device (13) for winding a product, continuous feeding between the intermittent feeding device (6) and the winding device (13) The device (2) is installed and the carrier tape is continuously transferred. By using the CCD camera (1) and the image processing device (12) for the carrier tape that is continuously transferred, the distance between the center of the feed hole and the center of the embossed portion in the tape removal direction is stable and accurate. A method of manufacturing a tape. By this method, if the position of the embossed part that has been sent to the punching device becomes unstable due to variations in the shrinkage rate of the sheet that is the material, or if the molding state becomes unstable, the molding device is immediately By stopping, only good products can be manufactured.
[0007]
In the present invention, a CCD camera is used to store in advance the shape of the embossed portion and the feed hole portion transferred by the continuous feeding device (2) in the image processing device, and the CCD camera (in front of the continuous feeding device ( In 1), the embossed portion after transfer is imaged and sent to the image processing apparatus. In the image processing apparatus, pattern matching is performed based on the shape of the embossed portion and the feed hole stored as described above, and the position is measured. When the amount of deviation of the position at which the corresponding embossed part is measured is equal to or greater than a preset numerical value, only the non-defective product is wound up by the winding device (13) by stopping the molding device.
[0008]
The CCD camera to be installed is preferably installed immediately before the continuous feeding device. The resolution of the camera only needs to be 240,000 pixels or more. As an image device that processes an image captured by the camera, for example, a device in which a commercially available image processing board is mounted on a personal computer may be used.
For other carrier tape manufacturing apparatuses, known manufacturing apparatuses can be used.
[0009]
Imaging with the CCD camera (1) is possible from either the top or bottom of the tape, but imaging from above is preferred so that no foreign matter accumulates on the lens attached to the camera. The CCD camera (1) is connected to the image processing device (12). As the image processing apparatus, a personal computer equipped with a commercially available image processing board was used. As processing in the image processing device, the shape and position of the embossed portion and the feed hole portion are stored in advance by the CCD camera (1), and the stored image is subjected to pattern matching after the carrier tape is transferred by the continuous feeding device. The position of the part is measured. The molding apparatus is stopped when the amount of deviation of the position at which the corresponding embossed portion is measured is greater than or equal to a preset numerical value.
Further, the type and method of illumination necessary for imaging are not particularly limited, but it is desirable to use high-intensity LED ring illumination in order to capture a clear image of the contour of the embossed portion of the subject. By doing in this way, more stable imaging can be performed and a more accurate position of the embossed part can be imaged.
[0010]
【Example】
<Example 1>
Using the equipment of the present invention, a carrier tape made of polystyrene having a width of 12 mm was produced at a speed of 60 SPM. The shape of the feed hole is φ1.5 mm, the distance (pitch) of the feed hole is 4 mm, the size of the storage pocket is 5 mm square, and the depth is 2 mm.
The distance in the tape take-out direction between the center of the carrier tape feed hole and the center of the embossed part measured with this equipment was measured at 500 points with a microscope measuring instrument, but all within the proper dimension range of 2 mm ± 0.05 mm. It was settled.
<Comparative Example 1>
The carrier tape was manufactured by the conventional method of imaging and measuring within intermittent operation. Other conditions were the same as in Example 1. As a result of measuring 500 points in the same manner as in Example 1, products of 1.93 mm, 1.94 mm, and 2.07 mm that did not satisfy the appropriate size range similar to that in Example 1 were found in three places.
[0011]
【The invention's effect】
The carrier tape manufacturing method of the present invention is capable of narrowing the imaging range of the CCD camera by providing a device for continuously transferring the carrier tape in the intermittent feeding molding method, which has been difficult to achieve with high accuracy. This inspection can be performed automatically and accurately, and a small quantity of various types of embossed carrier tapes can be economically and stably manufactured over a long period of time with high dimensional accuracy.
[Brief description of the drawings]
FIG. 1 shows an example of production equipment used in the method for producing a carrier tape of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 CCD camera 2 Continuous feed device 3 Punching device 4 Embossing device 5 Heating device 6 Tape transfer device 7 Tape before molding 8 Tape holding means 9 Embossed tape 10 after punching 10 Tape holding means 11 Guide roll 12 Image processing device 13 Winding device 14 Lighting device

Claims (1)

A feeding device for transferring a certain amount of tape for forming a carrier tape in an intermittent operation, a heating device and a forming device for forming a part of a sheet into an embossed shape, a punching device for producing a tape feed hole, and a carrier tape A carrier tape manufacturing method using a carrier tape manufacturing apparatus including an inspection apparatus for inspecting main dimensions and shapes, and separately from an intermittent operation feeding apparatus, a continuous feeding apparatus for continuously transferring an embossed tape and a CCD camera. A method of manufacturing a carrier tape, wherein an embossed tape is imaged and main dimensions and shape are inspected by an image processing apparatus to manufacture only a good carrier tape.

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