JP4100606B2 - Carrier tape - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has a film- like or thin-walled portion such as a flexible printed wiring board (FPC), COF (Chip On FPC) using TAB (Tape Automated Bonding), SOF (System On Film), etc. Further, the present invention relates to a carrier tape suitable for housing a component having a thin end portion.
[0002]
[Prior art]
Up to now, electronic components are generally mounted on a circuit board such as a PCB (Printed Circuit Board) by a mounting machine, and the outline is covered with a hard material such as epoxy resin, ceramics, or metal. The shape did not change. These electronic components have been stored and transported and stored in a carrier tape having component storage recesses formed at regular intervals, and have been used for surface mounting.
The size of the carrier tape storage recess is widened from the bottom of the storage recess toward the opening, and the bottom and opening of the recess are reversed when the electronic component is stored. That is, when the opening is directed to the ground surface and the bottom surface is directed to the sky, it falls due to its own weight. For this reason, a tape called a top cover tape intended to close the opening has been used to prevent the fall.
[0003]
In addition, in the case where the electronic component is a thin-walled component, an adhesive layer or a pressure-sensitive adhesive layer is provided on a mount, tray, or carrier tape, and the thin-walled component is mounted and held there.
However, in recent years, the objects to be surface-mounted have been expanded to other than electronic components, and various things have begun to be automatically mounted. Components having thin film-like parts such as FPC (Flexible Printed Circuit) and FPC incorporating a hard, non-deformable electronic component have begun to be automatically mounted.
[0004]
[Problems to be solved by the invention]
There has been a problem in storing and transferring these parts having a film-like portion and having an end portion that is a film-like portion or a thin-walled portion on a conventional carrier tape. That is, as described above, the side wall surface of the recess provided in the conventional carrier tape is formed so as to expand from the recess toward the opening, and the component to be stored is not fixed to the bottom surface of the recess. There is a problem that the component moves due to vibration or the like, and collides with the side wall of the recess, deforms, causes a take-out error due to misalignment, or misaligns during mounting. In addition, since the end of the component to be stored is a film or thin portion, there is a problem that a part of the component is caught between the top cover tape and the recess opening.
[0005]
In order to prevent such a problem, the above-described conventional technology is applied to the bottom of the housing recess formed on the carrier tape by using an adhesive or a pressure-sensitive adhesive (hereinafter referred to as a pressure-sensitive adhesive). Fixing by temporary bonding or the like has been studied. However, in this method, the adhesive component adheres to the component and affects the performance of the component, or the adhesive force varies due to changes in the outside air temperature or deterioration of the adhesive, so that automatic removal cannot be performed successfully. There was a problem.
Accordingly, an object of the present invention is to provide a carrier tape capable of storing and holding a part having a film-like thin wall portion, in particular, a FPC and an FPC incorporating a hard undeformable electronic part, or a film-like ID transponder (label) Such as chip mounters, which are widely used to automatically mount electronic components on a board. It is to provide a carrier tape.
[0006]
[Means for Solving the Problems]
· The Yariatepu of the present invention for solving the aforementioned problems is a carrier tape for accommodating the housing part having a flexibly deformable portion with a film-like, recess provided in regular intervals in order to accommodate the components on calibration Riatepu of the opposite side wall, said component insertion recess end can be inserted in the housing component is provided such that the bottom surface and a flat row, small fences than the size of the spacing of the opposing surface parts of the component insertion recess, The maximum value is set so that even if the storage component is offset to one side, it will not be removed from the component insertion recess on the opposite side, one end of the storage component is inserted into one of the component insertion recesses, and the film-like part is bent characterized that you have made it possible to insert the other end of the housing part to the other part housing recess. Base is provided for supporting the housing component in the recess, the component before insertion Symbol housing section articles housed in the recess, is held one plane shape and becomes a state, or in a deflected condition, the opening of the recess It is preferable that the storage component is not detached from the component storage recess due to its own weight even if it is inverted. The present invention is suitable for a storage component having a flexible printed wiring board.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is based on the provision of spaces (component storage recesses) into which the end portions of the storage components can be inserted on both side walls facing the recesses of the carrier tape.
Hereinafter, embodiments of the carrier tape of the present invention will be specifically described with reference to the drawings.
1A and 1B are drawings showing an example of the carrier tape of the present invention, in which FIG. 1A is a partial plan view, FIG. 1B is a cross-sectional view taken along line AA ′ in FIG. 1A, and FIG. It is sectional drawing which follows the BB 'line of 1 (a).
FIG. 2 is a cross-sectional view showing an example of a storage form in which the storage components stored in the carrier tape of the present invention are flat.
FIG. 3 is a cross-sectional view of a portion corresponding to the line BB ′ of FIG. 1A, showing an example of a storage form in which the storage component stored in the carrier tape of the present invention is bent.
4A and 4B are diagrams showing an example of a storage component stored in the carrier tape of the present invention. FIG. 4A is a plan view of the storage component, FIG. 4B is a front view thereof, and FIG.
[0008]
First, an example of a storage component stored in the carrier tape of the present invention will be described with reference to FIG.
The storage component 8 accommodated in the carrier tape of the present invention is a component having a film-like portion that can be flexibly deformed. 4 is a film-like circuit component cut into individual pieces, and a circuit layer 10 on which an electronic circuit is formed by printing or etching is laminated on one surface of a base sheet 9, If necessary, a protective layer 11 made of resin is provided to protect the electronic circuit. In the illustrated example, the protective layer 11 is provided at the center of the storage component 8. The protective layer 11 or the hard sheet may be provided at the end of the storage component 8.
The storage component 8 stored in the present invention has a film-like portion, and has an end portion with a thickness of 1 mm or less, particularly 0.5 mm or less. It may be a film circuit component on which a chip is mounted, or a film-like ID transponder.
Hereinafter, although an embodiment is described taking a storage part having a film-like portion at an end as an example, the present invention is not limited thereto.
[0009]
As shown in FIG. 1, the carrier tape 1 of the present invention is provided with recesses 2 at regular intervals in the length direction. The length of one side of the bottom surface 3 of the recess 2 is shorter than the maximum length of the storage component 8 shown in FIG. Further, the side wall surface connecting the bottom surface 3 and the opening 4 of the recess 2 is not provided vertically from the bottom surface 3 but is larger than 90 degrees and tapered within 150 degrees so that the storage component 8 can be easily stored. It is preferable to provide an angle.
The component insertion recesses 5 are placed at opposite side wall surface positions at a distance shorter than the maximum length of the storage component 8 at a position slightly spaced from the bottom surface 3 in the Z-axis direction from the bottom surface 3 toward the opening 4. Provide to be approximately parallel.
[0010]
The component insertion recess 5 is formed at a height larger than the thickness of the end portion of the storage component 8.
The width of the component insertion recess 5 is set to be equal to or less than the interval between the opposing wall surfaces of the recess 2 where the component insertion recess 5 is not provided, and the storage component 8 can be stored. The minimum value of the depth (depth) of the component insertion recess 5 is set almost evenly on both sides so that the storage component 8 can be flat when stored in the carrier tape. The maximum value is set so that the opposite side does not come off the component insertion recess 5 on the opposite side even when the storage component 8 is moved to one side.
Since the component insertion recess 5 is formed on the side wall surface inclined from the bottom surface 3 toward the opening 4, the lower end portion of the component insertion recess 5 protrudes into the recess 2 from the upper end portion.
[0011]
The upper end and the lower end of the component insertion recess 5 which are contact parts with the storage component 8 are adapted to bend and store the storage component 8 when the storage component 8 is put in and out. Therefore, it is preferable to have a rounded shape in order to cope with the continuous contact during storage.
The storage component 8 is inserted into the component insertion recess 5 with the flexible film-like portion at the end attached to the lower end projecting into the recess 2 from the upper end of the component insertion recess 5. By bending the film-like portion in the state, the opposite side of the storage component 8 is inserted into the component insertion recess 5 opposite to the component insertion recess 5 that has started to be inserted, and the storage component 8 is bent back and stored. . The storage part 8 is inserted manually or by an automatic machine.
[0012]
The carrier tape 1 storing the storage component 8 has an external factor such as entry of dust when considering the external environmental condition and the environment during transportation. Therefore, heat the top cover tape 6 so as to cover the opening of the recess. It can also be used by fusing or bonding.
Similarly to the conventional carrier tape, the carrier tape of the present invention is used by winding a predetermined length on a reel.
When taking out the storage component 8 from the recess 2 of the carrier tape 1, if the storage component 8 is held by air suction or mechanical chucking and pulled up in the direction of the opening 4, the part will be bent. It is arcuate and can be easily removed.
[0013]
As shown in FIG. 2, the storage component 8 is stored in the recess 2 of the carrier tape 1 so that both ends are inserted into the component insertion recess 5 and become substantially horizontal. Since the upper and lower surfaces at both ends of the storage component 8 are engaged and stored in the component insertion recess 5, the storage component 8 is stably held, and the bottom surface 3 and the opening 4 of the recess 2 of the carrier tape 1 are reversed. In other words, even when the opening faces the ground surface and the bottom faces the sky, the storage component 8 itself does not fall due to its own weight.
Further, by storing the storage component 8 in the component insertion recess 5 in this manner, even when the storage component 8 has a circuit printed on the bottom surface 3, it can be prevented from contacting the bottom surface of the recess.
FIG. 3 shows another embodiment of the carrier tape of the present invention.
In the embodiment shown in FIG. 3, a pedestal 7 is provided by raising a part of the bottom 3 of the recess 2 in the embodiment shown in FIGS.
[0014]
By providing the pedestal 7, it is possible to prevent the housing part 8 having a hard, non-deformable electronic component built in the center portion from supporting and hanging down.
By setting the height of the pedestal 7 so that it is closer to the opening side than the component insertion recess 5 provided on the opposite side wall surface of the recess 2, the storage component 8 is bent upward as shown in FIG. Can also be stored.
In this case, when taking out the storage part 8, it is possible to position the suction position on the opening side, can in small child sins a downward stroke for the removal of housing parts 8 by an automatic machine, possible to speed As a result, it becomes easy to take out, and since the storage component 8 is supported by the pedestal, the component can be taken out stably.
The height of the pedestal can be substantially the same as that of the component insertion recess. In this case, the component can be supported in a substantially horizontal state.
[0015]
About the manufacturing method of the carrier tape 1 of this invention, it is possible by using the well-known injection molding method, a pressure forming method, a vacuum forming method, a press molding method, and the molding method that combined these.
In forming the component insertion recess 5, a protrusion may be formed on the outside of the side wall surface at the same time as the recess 2 is formed or in a separate process, and it is formed by pressing compressed air, vacuum, or a nested component. In order to take out an undercut portion with respect to the mold release direction after molding, the mold needs to be divided.
In the carrier tape 1 having the recess 2 formed in this way, similarly to the conventional carrier tape, one or both of the flange portions at the periphery of the recess 2 are provided with feed holes at regular intervals along the longitudinal direction. Is formed by pressing at the same time or in a separate process.
[0016]
The resin sheet used as the material for the carrier tape can be made of various thermoplastic resins such as polystyrene, polycarbonate and polyethylene terephthalate, or a laminate of these, or a material imparted with conductivity, but does not generate dust. Selection is preferable, and it is preferable to use a soft material having a surface hardness smaller than that of the component for the contacted portion.
Such a resin sheet has a thickness of 0.1 to 0.6 mm, is slit into a predetermined width, and is elongated.
[0017]
The size of each part of the recess 2 of the carrier tape 1 may be determined according to the size of the storage component 8 to be stored. This will be described by taking the storage component 8 shown in FIG. 4 as an example. First, let the external dimensions (mm) of the storage component 8 be f, g, and h. f and g indicate the horizontal dimension and vertical dimension of the storage component 8, and h indicates the thickness of the storage component 8. A portion where the storage component 8 fits into the component insertion recess 5 is denoted by r (FIG. 2).
1B and 1C, the dimensions of the recess 2 in which the storage component 8 is stored are indicated as f ′, g ′, and h ′. f ′ is the short side dimension of the opening 4, g ′ is the overall length dimension of the opposing component insertion recess 5, and h ′ is the height dimension of the component insertion recess 5.
[0018]
Further, when the bottom surface 3 and the opening 4 of the concave portion 2 are reversed, that is, when the opening 4 is directed to the ground surface and the bottom surface 3 is directed to the sky, they face each other in order to prevent the storage component 8 from falling due to its own weight. The separation distance a between the upper end portions of the component insertion recess 5 is also important.
In determining each of the above dimensions, the storage component 8 is placed at a fixed position, and it is necessary that the storage component 8 does not fall due to its own weight even if the top and bottom are reversed. The total length g ′ of the component insertion recess 5 with respect to g and the separation distance a between the upper end portions of the component insertion recess 5. In designing, numerical simulation is performed in advance, and between the upper end portions of the component insertion recess 5 It is preferable to prevent the storage component 8 from falling off. In addition, when the top and bottom are reversed, the storage component 8 may be bowed due to the weight of the storage component 8. This is confirmed by conducting a bending test of the storage component 8, and the data is a. It is necessary to reflect this in the design.
[0019]
【Example】
[Example 1]
A carrier tape having the shape shown in FIG. 1 is manufactured, and the storage component having the shape shown in FIG. 4 is stored in the component insertion recess provided in the recess of the carrier tape. The occurrence of scratches on the storage parts involved was investigated. The dimensions of the storage parts defined above and expressed in English are as follows.
f = 13.5mm
g = 32.3 mm
h = 0.065mm
[0020]
The carrier tape had a width of 44 mm, a recess pitch of 16 mm, and the dimensions of the recesses were as follows.
a = 28.0mm
f ′ = 13.8 mm
g ′ = 32.6 mm
h '= 2.0mm
In FIG. 2, r shown in FIG. 2 is 1.5 mm.
[0021]
The storage part was manually stored in the part insertion recess provided in the recess of the produced carrier tape, and the presence or absence of dropping due to its own weight and the damage to the part due to the lifting of the storing part due to suction were examined. 0/1000, and for scratches, the storage parts before storage and the storage parts after lifting were confirmed with a microscope, but the scratches newly attached after lifting were 0/100.
Further, in order to confirm whether or not the component is in contact with the bottom surface of the recess, it was confirmed by providing a perforated portion on the bottom surface, but it was not in contact.
[0022]
【The invention's effect】
When the component having the film-like portion is stored in the carrier tape, the component insertion recess is formed on the side wall surface facing the recess, so that the surface of the storage component can be stably held without being damaged or deteriorated. Even if the top and bottom of the carrier tape is reversed, the storage component does not separate from the component insertion recess in the recess. Since the carrier tape is used, even a part having a thin film-like part can be easily handled by an automatic machine.
[Brief description of the drawings]
1A and 1B are diagrams showing an example of a carrier tape of the present invention, in which FIG. 1A is a partial plan view, FIG. 1B is a cross-sectional view taken along line AA ′ of FIG. 1A, and FIG. It is sectional drawing which follows the BB 'line of 1 (a).
FIG. 2 is a cross-sectional view showing an example of a storage form in which the storage components stored in the carrier tape of the present invention are flat.
3 is a cross-sectional view of a portion corresponding to the line BB ′ of FIG. 1 (a), showing an example of a storage configuration in which a storage component stored in the carrier tape of the present invention is bent.
4A and 4B are diagrams showing an example of components housed in the carrier tape of the present invention, where FIG. 4A is a plan view of the housing components, FIG. 4B is a front view thereof, and FIG. 4C is a side view.
[Explanation of symbols]
1: Carrier tape 2: Recessed portion 3: Bottom surface 4: Opening 5: Component insertion recessed portion 6: Top cover tape 7: Base 8: Storage component 9: Base sheet 10: Circuit layer 11: Protective layer

Claims (3)

A carrier tape for accommodating the housing part having a part component that can flexibly deformable in film form, on opposite side walls of the recess provided at regular intervals in order to house the components in the carrier tape, of the housing part component insertion recess can be inserted into the end portion is provided such that the bottom surface and a flat row, the component insertion recess of a small fence than the size of the minimum value the housing parts relative to that surface of the spacing, the maximum value storage part Is set so as not to be disengaged from the component insertion recess on the opposite side even if it is shifted to one side, one end of the storage component is inserted into one of the component insertion recesses, the film-like portion is bent, and the storage component carrier tape, characterized in that you are making it possible to insert the other end in the other part housing recess. The pedestal supporting the housing component in the component storage recess is provided, the housing part to be housed before SL component insertion recess, is held in a state serving as an planar, or flexed state, the opening of the recess The carrier tape according to claim 1, wherein even if the storage component is inverted, the storage component is not separated from the component storage recess due to its own weight.   The carrier tape according to claim 1, wherein the storage component has a flexible printed wiring board.

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