JPH01294463A - Electronic component link - Google Patents

Abstract

PURPOSE:To eliminate errors in the mount suction by a suction nozzle, by providing a bottom surface of a concavity of a tape with a protrusion which makes a contact area between the bottom surface and an electronic component smaller. CONSTITUTION:An electronic component link 21 is composed of a tape 23, on which concavities 22 have been provided in the longitudinal direction with a uniform space, and an electronic component A which has been stored in respective concavities 22. On the tape 23, feeding holes 24 with a uniform space have been provided along the longitudinal direction, and the concavities 22 are formed with a uniform space. On the bottom surface of the concavity 22, a protrusion 25 which makes the contact area with the rear surface of the stored electronic component A smaller has been provided. When the electronic component A is taken out by suction from the concavity 22 by a suction nozzle for a mounter, the tenacity of a lubricant B becomes weaker than the suction force, and the electronic component A can be assuredly taken out from the concavity 22 by suction, and the reliability of the mounter can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a packaged series of electronic components in which electronic components are housed in recesses provided at regular intervals in a tape.

<Conventional technology> When mounting chip-shaped electronic components on a printed circuit board,
To do this automatically using a mounter, an electronic component chain is used that stores chip-shaped electronic components in recesses provided at regular intervals along the length of the tape, and the tape is intermittently placed inside the mounter. The electronic components are then moved to the PCB, and the electronic components are absorbed by a suction nozzle and then attached to the printed circuit board.

Conventionally, as shown in FIG. 6, in the form of the electronic component series described above, feed holes 2 are provided at regular intervals along the longitudinal direction of a synthetic resin tape 1, and recesses 3 are formed by embossing. A chip-shaped electronic component A is housed in each recess 3, and an embossed tape with the top opening of the recess 3 closed with a cover tape 4 and a tape 5 made of cardboard are placed at regular intervals as shown in FIG. A feed hole 6 and a storage hole 7 are provided,
There are two methods of paper tape, in which cover tapes 8 and 9 are stacked on both sides of the tape and the electronic component A is stored in the storage hole 7.

By the way, electronic parts with rotating gate structures such as trimmer capacitors have lubricant built into them, and this may leak out to the outside. Therefore, when such electronic parts are included in electronic parts, , it is preferable to use the former embossed tape.

The above-mentioned trimmer capacitor uses silicone oil as a lubricant, but if the lubricant adheres to the capacitor or if the lubricant inside dissolves due to temperature rise, the concave part 3 in the tape 1 as shown in FIG. The lubricant B will accumulate between the bottom surface of the electronic component A and the back surface of the electronic component A.

<Problems to be Solved by the Invention> As described above, the lubricant B accumulated between the recess 3, the bottom surface, and the back surface of the electronic component A is economically solidified to generate adhesive force, and the electronic component A is attached to the recess 3. Therefore, when the electronic component A is suctioned by the suction nozzle 10 of the mounter and taken out from the recess 3 as shown in FIGS. 8 and 9, the adhesive force of the lubricant B is This causes a problem in that the suction nozzle 10 makes a suction error, and mounting on a printed circuit board becomes impossible.

<Purpose of the Invention> The present invention was made to solve the above-mentioned problems, and it reduces the contact area between the electronic components stored in the recesses of the tape and the bottom surface of the recesses, and reduces the amount of adhered lubricant. It is an object of the present invention to provide a series of electronic components that can improve reliability by reducing the adhesive force of agents, etc., and eliminating errors in mounting suction by suction nozzles.

Means for Solving the Problems> In order to solve the above problems, the present invention provides a tape in which recesses are provided at regular intervals in the longitudinal direction, and an electronic component housed in each recess of the tape. The tape has a structure in which a protrusion is provided on the bottom surface of the concave portion to reduce the contact area between the bottom surface and the electronic component.

Effect> Since the protrusion is provided on the bottom of the recess of the tape, the contact area between the bottom of the recess and the electronic component housed in the recess is small, and the lubricant eluted from the electronic component is transferred between the bottom of the recess and the back surface of the electronic component. Even if it solidifies, the generation of adhesive force is small, and the mounter's suction nozzle can reliably suck and remove the electronic component from within the recess.

<Embodiments> Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 5 of the accompanying drawings.

As shown in FIG. 1, the electronic component series 21 includes a tape 23 provided with recesses 22 at regular intervals in the longitudinal direction, and a tape 23 provided with recesses 22 at regular intervals in the longitudinal direction.
The electronic component A is, for example, a chip-shaped trimmer capacitor equipped with a rotation mechanism.

The tape 23 is an embossed tape that is made of synthetic resin and has feed holes 24 provided at regular intervals along the longitudinal direction, and concave portions 22 for housing electronic components formed at regular intervals by embossing.

A protrusion 25 is provided on the bottom surface of the recess 22 in the tape 23 to reduce the contact area with the back surface of the stored electronic component.

The structure and shape of this protrusion 25 are not limited as long as it can stably support the electronic component A without tilting, but in the first example shown in FIGS. 1 and 2, the protrusion 25 is It is formed into two rib-like protrusions along the line, and supports the electronic component A in a line-contact state.

Further, the second example shown in FIGS. 3 and 4 shows a recess 22 having four sharp protrusions on the bottom surface to support the electronic component A in point contact. There is.

Note that the recess 22 housing the electronic component A is closed by a cover tape 26 pasted on the tape 23;
Instead of this cover tape 26, an interlayer paper may be used which is interposed between the tapes 23 when the electronic component string 21 is spirally wound around a reel. The use of the cover tape 26 can also be omitted by rotating it.

The electronic component series of the present invention has the above-mentioned configuration, and the electronic components A stored in each recess 22 of the tape 23 are supported by projections 25 provided on the bottom of the recess 22, as shown in FIG. The protrusion 25 and the back surface of the electronic component A are in line or point contact, and the contact area is small and the protrusion 25 is raised from the bottom surface of the recess 22.

Therefore, even if the lubricant B attached to the electronic component A or eluted from the inside accumulates between the bottom surface of the recess 22 and the back surface of the electronic component and solidifies, the lubricant B will not affect the electronic component A. The amount of adhesion is small, and the adhesive force generated by lubricant B is weak.

Therefore, when the suction nozzle of the mounter suctions and removes the electronic component A from the recess 22, the adhesive force of the lubricant B becomes weaker than the suction force, and the suction ensures that the electronic component A is removed from the recess 22. The reliability of the mounter can be improved.

In the present invention, cardboard as shown in FIG. 7 may also be used as the tape.

<Effects of the Invention> As described above, according to the present invention, protrusions that support electronic components in a line or point contact state are provided on the bottom surfaces of recesses provided at regular intervals in the tape to accommodate electronic components. , the contact area between the bottom of the recess and the electronic component is reduced, which weakens the adhesive force of the lubricant eluted from the electronic component and accumulated between the bottom of the recess and the back of the electronic component. This eliminates the occurrence of suction errors when taking out parts, and improves the reliability of the mounter.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a first example of an electronic component series according to the present invention, FIG. 2 is a sectional view taken along arrows ■-■ in FIG.
The figure is a plan view showing the example shown in Fig. 2, Fig. 4 is a sectional view along the arrow ■-IV in Fig. 3, Fig. 5 is a sectional view showing the storage state of electronic components, and Figs. The figure is a perspective view showing a conventional electronic component series, and FIGS. 8 and 9 are explanatory diagrams showing the suction state of the electronic component by the mounter in the same. 21...Electronic component series 22...Concave portion 2
3... Tape 24... Feed hole 2
5...Protrusion A...Electronic component applicant's agent Patent attorney Kazu 1) Showa 1
U2□ Figure 3 Figure 4 25 B 25 Figure 6

Claims (1)

[Claims] (1) Consisting of a tape with recesses provided at regular intervals along the longitudinal direction, and electronic components housed in each recess of the tape, the contact area between the bottom surface and the electronic components on the bottom surface of the recesses of the tape. A series of electronic components with protrusions to reduce