KR20110059262A

KR20110059262A - Carrier tape lint removing method

Info

Publication number: KR20110059262A
Application number: KR1020090115929A
Authority: KR
Inventors: 우종완
Original assignee: 선우아이디 주식회사
Priority date: 2009-11-27
Filing date: 2009-11-27
Publication date: 2011-06-02

Abstract

The present invention relates to a method for removing lint from a carrier tape, and more particularly, to a method for removing lint from a carrier tape that can effectively remove lint generated during a puncturing process of a carrier tape at a low cost.

In the lint removal method formed on the inner surface of the receiving hole of the carrier tape, the present invention provides a pair of imaginary straight lines that irradiate a laser into the receiving hole and extend the pair of sides facing each other of the receiving hole. A lint removal method of a carrier tape is provided by removing the lint by irradiating a laser in a zigzag form reciprocating therebetween.

According to the present invention, it is possible to provide a method for removing lint of the carrier tape which can remove the carrier tape more efficiently and economically using a laser.

Description

Carrier tape lint removing method

In devices having electronic components such as field effect transistors (FETs), resistors or capacitors, and LED components such as light emitting diodes (LEDs), the weight, size, and operating frequency of the products are being increased. Electronic components have been manufactured to be lighter, thinner and shorter. These small electronic products are automatically inserted into the circuit board. In general, in order to continuously supply the electronic parts to the automatic insertion device for automatically inserting the electronic parts into the circuit board, the electronic parts can be accommodated at regular intervals to accommodate the electronic parts. Electronic component carrier tapes having rectangular holes or receiving holes are used.

1 is a plan view of a carrier tape, and FIG. 2 is a cross-sectional view illustrating a state in which an electronic component is mounted on a carrier tape. As shown in these figures, the carrier tape 3 has a plurality of receiving holes 4 for accommodating the electronic component 5 at regular intervals, and the carrier tape 3 along one side edge thereof. A large number of circular conveying holes 6 are formed to convey the precise pitch. On both sides of the carrier tape 3, as shown in Fig. 2, a protective tape 7 is attached. The lower protective tape 7b is attached to the rear surface of the carrier tape 3 and the electronic component accommodating hole 3a is attached. After accommodating the necessary electronic components 5, the upper protective tape 7a is again attached thereon so that the carrier tape 3 can accommodate the electronic components 5 therein.

The receiving hole 4 is made by the drilling equipment as shown briefly in Figure 3, the inner surface (4a) of the receiving hole 4 in the drilling process using the punch (P) lint difficult to visually identify (100; see enlarged view of FIGS. 4 and 5). An enlarged view of the entire carrier tape is shown in FIG. 4, and an enlarged view of the accommodation hole is shown in FIG. 5. Since the lint 100 may contaminate the electronic parts during the transfer of the electronic parts accommodated in the accommodation hole 4, the lint 100 is necessarily removed as a post-treatment process.

Figure 6 is a method for explaining a conventional method used to remove such lint (100). The carrier tape 3 is continuously conveyed from the left side to the right side in the drawing (in the direction of the arrow shown in FIG. 5). At this time, the carrier tape 3 is provided above the receiving hole 4 of the carrier tape 3. Air is injected to remove the lint 100 while the high-temperature air passes through the receiving hole 4. Although not shown in the inside of the heat blower 1, a heating wire is provided to heat the air supplied to the heat blower 1. Arrows shown in the drawing indicate the flow direction of air at high temperature and high pressure.

In such a conventional method of removing the lint 100, the injection of air at a high temperature and high pressure is continuously injected because it is more advantageous to continuously inject air for efficient heating of the air. Therefore, the high-temperature, high-pressure air is not injected only to the accommodating hole 4 in which the lint 100 is formed, but is continuously injected to the carrier tape 3 at a predetermined width so that the heating strip 8 is formed at the portion indicated by hatching in FIG. 3. . In fact, the heating strip 8 is yellowish discoloration, so it is not aesthetically desirable, and there is a problem that may cause the performance of the carrier tape 3 to be degraded.

In addition, since hot air is continuously supplied to the carrier tape, a problem arises in that the carrier tape is deformed (contracted) by heat.

In order to solve this problem, the applicant of the present application removes lint of the carrier tape using a laser irradiation apparatus as shown in FIG. 7, but simply uses a laser irradiation apparatus 9 as shown in FIG. In the case of the method of irradiating a laser to the receiving hole (4), the laser irradiation to the entirety of the receiving hole, this method has the disadvantage that the energy efficiency is very low. In the conventional method, as shown in FIG. 8, the filter f is used to convert the laser light into the same shape as that of the receiving hole and irradiate the laser light, which requires a laser generator having a very large energy. By the way, the portion to be irradiated with the laser is actually the portion where the lint is formed (marked with hatched in FIG. 9), and the portion indicated by the dot in FIG. 9 does not need to irradiate the laser but is shown as the dot in FIG. The laser was irradiated to the part, which caused a problem of inefficiency.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a lint removal means that can remove lint formed in the carrier tape receiving hole by using a laser more efficiently and economically. .

The present invention as a means for solving the above problems,

In the method of removing lint formed on the inner side of the receiving hole of the carrier tape,

Irradiate a laser into the receiving hole,

It provides a method of removing the lint of the carrier tape by irradiating the laser in a zigzag form reciprocating between a pair of virtual straight lines extending from the pair of sides facing each other of the receiving hole. .

Irradiation of the laser is preferably made in the process of conveying the carrier tape.

It is preferable that a pair of imaginary straight lines which extend the said pair of sides are parallel to the advancing direction of the said carrier tape.

The laser is irradiated in a zigzag form in the receiving hole is more preferably made by moving the mirror reflecting the laser generated in the laser generating device.

Hereinafter, with reference to the drawings will be described with respect to the method of removing the lint of the carrier tape in accordance with one preferred embodiment of the present invention will be described in detail for the practice of the present invention.

10 and 11 are views for explaining the lint removal method according to an embodiment of the present invention, Figure 12 is an enlarged view of the receiving hole of the carrier tape is removed lint by the present invention.

The basic technical idea of the method of removing the lint of the carrier tape according to the present invention is to use a laser having a low energy level while removing the lint generated on the carrier tape by using the laser generated by the laser irradiation apparatus.

The conventional method of removing lint of a carrier tape using a laser shown in FIG. 7 employs a method of removing lint of a moving carrier tape by periodically irradiating a laser beam shown as a dot island in FIG. 10. However, as described in the description of the prior art, the laser beam shown in FIG. 9 has to use a laser having a very high energy level, so there is a problem in that the cost for generating a laser is very large.

In order to solve such a problem, the invention derived from the reference numeral 8 in FIG. 10 has a small cross-sectional area of the beam flux of the laser and uses a laser having a lower level of energy so that a pair of opposing holes of the receiving holes 4 face each other. A laser beam is irradiated in a zigzag form reciprocating between a pair of imaginary straight lines extending sides to remove lint, and the present invention is the invention according to claim 1.

In this case, there is an advantage in that a laser beam can be made at a much lower cost than using the laser beam shown in FIG. 7 or 9.

In order to more effectively remove lint from the carrier tape, rather than irradiating a laser while the carrier tape is stopped, the lint of the carrier tape is removed during the movement of the carrier tape. The movement of the carrier tape is a movement around the carrier tape on either side, similar to the perforation of the carrier tape. The invention which can remove such an efficient carrier tape is invention of Claim 2.

In order to irradiate the laser during the movement of the carrier tape, it is preferable that a pair of imaginary straight lines extending from the pair of sides be parallel to the traveling direction of the carrier tape. It is shown in the invention as described in claim 3.

The zigzag shape may be various. The zigzag shape shown in FIG. 10 is a method of moving the laser perpendicular to the advancing direction of the carrier tape as indicated by b1 and b2 on the drawing. In the case of irradiating the laser in this direction, the carrier tape moves at the speed of the vector indicated by a so that the laser is irradiated in the form of overlapping a plurality of W-shapes as shown by the arrow indicated inside the receiving hole 4 to remove the lint. Of course, the laser beam is not irradiated to parts other than the accommodation hole 4. When the laser is irradiated, it is hot, and the lint on the periphery of the laser is also removed.

FIG. 11 illustrates a method of removing lint by irradiating a laser in a zigzag form slightly different from the zigzag form shown in FIG. 10. If the laser is moved in the direction of b1 'when irradiating the laser from the top to the bottom of the figure, and in the direction of b2' when irradiating the laser in the opposite direction, the receiving hole of FIG. The laser is irradiated in the direction of the arrow indicated in 4), and when the laser is irradiated in this form, it is possible to remove the neat lint more than the zigzag direction shown in FIG.

Meanwhile, in the process of irradiating the laser in the direction shown in FIGS. 10 and 11, the frequency or period when the laser is zigzag irradiated may determine a family register or an optimal range through several experiments. I will investigate.

The invention according to claim 4 is to irradiate a laser beam generated by a laser irradiation apparatus to each side of the carrier tape by using a mirror to continuously irradiate the laser while moving the mirror. Since it is difficult to move the laser light minutely by moving the laser irradiation device itself, which generates the laser, it is reflected on the mirror, but the laser light is moved by controlling the movement of the mirror using a controller.

12 is one example of the receiving hole is removed lint by the present invention. Unlike the photo of the receiving hole shown in Figure 5 can be confirmed that most of the lint is removed.

While the above has described the specific contents for the practice of the present invention by describing the preferred embodiment of the present invention, the technical idea of the present invention is not limited to the described embodiment and within the scope that does not contradict the technical idea of the present invention. It can be implemented by the method of removing lint of the carrier tape of various forms.

1 is a plan view of a carrier tape.

FIG. 2 is a view for explaining a state in which an electronic component is held on a carrier tape shown in FIG. 1. FIG.

3 is a view for schematically explaining equipment for punching a carrier tape.

FIG. 4 is an enlarged view of lint generated during the puncturing of the carrier tape shown in FIG. 3. FIG.

5 is an enlarged view of the accommodation hole in the enlarged view shown in FIG.

6 and 7 schematically show a conventional lint removing device.

8 and 9 are views for explaining the problem of the lint removing apparatus using the laser shown in FIG.

10 is a view for explaining a lint removal method according to an embodiment of the present invention.

11 is a view for explaining a lint removal method according to another embodiment of the present invention.

12 is an enlarged view of the receiving hole of the carrier tape from which the lint is removed by the present invention.

** Explanation of symbols for the main parts of the drawing **

4: receiving hole 8: laser beam

Claims

Irradiate a laser into the receiving hole,

And removing the lint by irradiating a laser in a zigzag form that reciprocates between a pair of imaginary straight lines extending from a pair of opposite sides of the receiving hole to each other.

The method of claim 1,

Irradiation of the laser is a lint removal method of a carrier tape, characterized in that the carrier tape is carried in the process of conveying.

The method of claim 2,

And a pair of imaginary straight lines extending from the pair of sides are parallel to the advancing direction of the carrier tape.

The method according to any one of claims 1 to 3,

The laser is irradiated in a zigzag form in the receiving hole by removing the lint of the carrier tape, characterized in that for moving the mirror reflecting the laser generated in the laser generator.