KR100768469B1 - adhesive attach machine for fix flexible printed circuit board on main printed circuit board - Google Patents

Abstract

A double-sided tape is attached to the flexible circuit board to fix a flexible printed circuit board for driving a flat panel display device mounted on various electronic devices to implement images on the main circuit board side. In particular, the flexible circuit board can be used to move the flexible circuit board in a rotary manner, as well as to attach a double-sided tape, and to easily perform multiple tasks such as sealing material coating and identification symbols for moisture proof circuit patterns. Disclosed is a double-sided tape applying apparatus for attaching a substrate to a main circuit board.

The double-sided tape attachment device for attaching such a flexible circuit board to the main circuit board,

A first rotating table provided with a work table providing a work surface, a plurality of stages rotated on the work table with power developed from a driving source, and for loading the flexible circuit board, and the first rotation table located apart from the first turn table. A second rotary table installed to have a rotary surface at a point higher than the rotary surface of the table, and a flexible circuit mounted on the second rotary table and supplied with a double-sided tape while moving along the second rotary table and loaded on the stage. A tape attacher having an attachment head for attaching to a substrate, and a double-sided tape which is located on the circumferential outer side of the second rotary table and wound in a roll form between two reels, from one reel to the other In order to be adsorbed to the attachment head one by one on the moving section when moved The feeder and the opposite surface of the substrate by inverting the attitude of the flexible printed circuit board loaded on the stage with an inverting head mounted on the arm which is circumferentially outer side of the first rotary table and which is rotatable with respect to the hinge point. In order to display a unique identification symbol by irradiating a laser to a seal material applicator for applying a sealing material for moisture proof of a circuit pattern formed on the opposite side to which a double-sided tape is attached, and a surface to which the sealing material is applied on the flexible circuit board. For indicators.

  Substrate module for flat panel display, flexible circuit board for driving module, double-sided tape attachment, two rotary tables, tape attacher, tape feeder, application of sealant for moisture proof, identification symbol marking, multitasking, work efficiency and productivity improvement

Description

Adherent attach machine for fix flexible printed circuit board on main printed circuit board

1 is a plan view illustrating the entire structure of a double-sided tape applying apparatus for attaching a flexible circuit board to a main circuit board according to an embodiment of the present invention.

2 is a side view of the attachment device of FIG. 1.

3 is a view for explaining the stage structure of FIG.

4 is a view for explaining the attachment head structure of FIG.

5 is a view for explaining the tape feeder structure of FIG.

6 is a partially enlarged view for explaining the double-sided tape supply and adsorption action of FIG.

7 is a view for explaining the operation of the tape attacher of FIG.

8 is a view for explaining the structure and operation of the seal material applicator of FIG.

The present invention relates to a flexible circuit having a double-sided tape for fixing a flexible printed circuit board for driving a flat panel display device mounted on various electronic devices to implement an image on a main circuit board side. It is used for attaching to the board, and in particular, it is possible to easily carry out the multi-task such as attaching the double-sided tape while moving the flexible circuit board in a rotary method and applying a seal material and marking the identification symbol for moisture proof of the circuit pattern. The present invention relates to a double-sided tape attachment device for attaching a flexible printed circuit board to a main circuit board.

In general, various portable electronic devices such as mobile phones and personal multimedia players (PMPs) are equipped with a board module for a flat panel display device such as an LCD panel so that images can be realized. Various image signals and control signals are applied from a connected flexible printed circuit board.

The flexible printed circuit board is attached to face the main circuit board to receive a control signal from the main circuit board, and the flexible circuit board is attached to the main circuit board by epoxy and epoxy. Although there is a method of applying the same liquid adhesive, the application of the epoxy, as well as the process of curing the applied epoxy every time there is a disadvantage that the operation is complicated and takes too much time.

In order to alleviate this disadvantage, a method of fixing the flexible circuit board to the main circuit board side by attaching a double-sided tape to the flexible circuit board in advance and by double-sided adhesive force of the tape has been proposed. The method of attachment replaces the method of applying the adhesive and is widely used.

The double-sided tape is attached to the opposite side of the surface of the flexible circuit board facing the surface on which the circuit pattern is formed while the flexible circuit board is manufactured after the separate operation, and the two substrates are bonded to each other. When the release paper is separated and the bonding of the substrate is made by the separated bonding surface.

After the double-sided tape is attached, a moisture-proof sealing material is applied to prevent moisture from penetrating into the connection portions of the IC chips mounted on the surface where the circuit pattern is formed, and the circuit pattern is coated with the sealing material. Proceed with marking various identification symbols such as lot number on the surface.

However, the operation of attaching the double-sided tape to the flexible circuit board side is a method in which a worker separates the double-sided tape attached to the flexible circuit board side by one after the worker directly separates the double-sided tape along the sheet wound in the roll state. In this way, the tape attachment method by hand takes an excessive amount of working time and personnel.

In particular, as described above, the tape attaching operation by manual operation is a factor that causes excessive defect quality because of the deviation of the attachment position of the double-sided tape depending on the worker or the work environment. Therefore, there is a limit to mass production by such a manual attachment method, and it is difficult to improve work efficiency and productivity.

In addition, the sealing material application and identification symbol marking work is a complex and holding process by moving the flexible circuit board with the double-sided tape attached to each work area and moving the separate devices (application devices, display devices). Excessive time is one factor that further reduces work efficiency and productivity.

The present invention has been made to solve the conventional problems as described above, the object of the present invention is to attach the double-sided tape to the flexible circuit board, as well as to the multiple operations such as application of the seal material for moisture proof and notation of the identification symbol. The present invention provides a double-sided tape attachment device for attaching a flexible circuit board to a main circuit board which can be easily moved while moving the flexible circuit board in a rotary method.

In order to realize the object of the present invention as described above,

A first rotating table provided with a work table providing a work surface, a plurality of stages rotated on the work table with power developed from a driving source, and for loading the flexible circuit board, and the first rotation table located apart from the first turn table. A second rotary table installed to have a rotary surface at a point higher than the rotary surface of the table, and a flexible circuit mounted on the second rotary table and supplied with a double-sided tape while moving along the second rotary table and loaded on the stage. A tape attacher having an attachment head for attaching to a substrate, and a double-sided tape which is located on the circumferential outer side of the second rotary table and wound in a roll form between two reels, from one reel to the other In order to be adsorbed to the attachment head one by one on the moving section when moved The feeder and the opposite surface of the substrate by inverting the attitude of the flexible circuit board loaded on the stage with an inverting head mounted on an arm which is located on the circumferential outer side of the first rotary table and capable of rotating with respect to the hinge point. In order to display a unique identification symbol by irradiating a laser to a seal material applicator for applying a sealing material for moisture proof of a circuit pattern formed on the opposite side to which a double-sided tape is attached, and a surface to which the sealing material is applied on the flexible circuit board. Provided is a double-sided tape attachment device for attaching a flexible circuit board including an indicator to a main circuit board.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention are described to the extent that those of ordinary skill in the art can practice the present invention.

Therefore, since the embodiments of the present invention may be modified in various other forms, the claims of the present invention are not limited to the embodiments described below.

1 and 2 are a plan view and one side view for explaining the overall structure of the double-sided tape attaching apparatus for attaching a flexible circuit board to the main circuit board according to an embodiment of the present invention, reference numeral 2 denotes a work table.

The work table 2 is attached to the double-sided tape (F) to the flexible circuit board (G, hereinafter referred to as "flexible substrate") and can be multi-tasked such as application of the moisture-proof sealing material (W) and marking the identification symbol. Provide a working surface.

On the work table 2, the first rotary table T1 is installed in a horizontal position so as to receive power from a drive source M1 such as a servo motor so as to be rotatable with respect to the center, and on the table T1, a flexible substrate ( A plurality of stages 4 are arranged for loading G).

Each stage 4 is configured to be loaded while at least one or more flexible substrates G are horizontally placed on the upper surface, and a plurality of adsorption holes H are disposed on the upper surface of the stage 4. It is formed together. Although not shown in the drawing, the adsorption holes H are connected to a conventional vacuum generator that generates a vacuum pressure, and the flexible substrate G is disposed on the stage 4 by a vacuum pressure acting inside the holes H. It serves to be detachably fixed.

The stage 4 is used among synthetic resins which do not cause scratches when contacted with the flexible substrate G. The stage 4 is positioned in the circumferential direction of the table T1 on the first rotary table T1 as shown in FIG. And a plurality are horizontally positioned.

Although not shown in the drawing, the flexible substrate G has a conventional pattern surface having an IC chip and a soldering portion formed on one side thereof, and the pattern surface is placed in contact with the loading surface of the stage 4 while being opposite to the surface. It is loaded in a posture to which the double-sided tape (F) can be attached.

Each of the stages 4 is firmly fixed on the first rotary table T1 by a fastening member such as a bolt, and is not shown, for example, an IC chip or soldering formed on a pattern surface of the flexible substrate G. Grooves are formed to accommodate various protrusions, such as grooves. This structure can prevent the loading posture from being changed by the protruding portions of the flexible substrate G or being loaded in an irregular contact state.

On the work table 2, a second rotary table T2 is positioned adjacent to the first rotary table T1 as shown in FIG.

The second rotary table T2 is rotated about the center by receiving power from a driving source M2 such as a servo motor. In addition, as shown in FIG. 2, the rotary table T2 has a higher rotating surface than the first rotary table T1 and the two tables T1 and T2 are partially overlapped as shown in FIG. 1. (2) is fixed on the top.

The tape attacher 6 for attaching the double-sided tape F is fixed to the second rotary table T2 on the flexible substrate G loaded on the stages 4. The tape attacher 6 may be a conventional cylinder equipped with a piston rod capable of linear reciprocation by fluid pressure, and an attachment head 8 is mounted at the end of the piston rod.

The tape attacher 6 is fixed to the bottom of the second rotary table T2 in a posture of the attachment head 8 downward as shown in FIG. 2, and is divided into equal parts along the circumferential direction of the rotary table T2. It is installed in each of the plurality of points as shown in FIG.

The tape attaching machine 6 is the point at which the two rotary tables T1 and T2 overlap each other by a pressing operation in which the attachment head 8 moves up and down in a state where the double-sided tape F is adsorbed. It is made to attach the double-sided tape (F) on the flexible substrate (G) loaded on the stage (4).

One side surface (bottom surface) of the attachment head 8 is formed with a plurality of adsorption holes (H), as shown in Figure 4, each of the holes (H) are the adsorption holes (H) formed in the stage (4) Although not shown in the drawings to enable the same operation, it is connected to a conventional vacuum generator for generating a vacuum pressure and serves to detachably fix the double-sided tape (F) by the vacuum pressure.

In addition, a tape feeder 10 for supplying the double-sided tape F to the tape attaching machine 6 is located at the circumferential outer side of the second rotary table T2.

The tape feeder 10 is configured to be supplied while the double-sided tape F is moved by the vacuum pressure acting on the tape attacher 6, that is, the suction holes H of the attachment head 8.

To this end, in the present embodiment, as shown in FIG. 5, a plurality of double-sided tapes F are attached along a sheet of paper F1 wound in a roll, and the sheet of paper F1 is sandwiched between two reels R1 and R2. The double-sided tape (F) is supplied to the point that can be adsorbed to the attachment head (8) while being moved while being wound from one reel (R1) to the other reel (R2).

In addition, the opposite surfaces of the double-sided tapes F moving along the sheet paper F1 are supplied in a state of being covered by the release paper F2, and the release paper F2 is in contact with the attachment head 8 in the state. (F) is adsorbed one by one.

The two reels R1 and R2 are rotated by receiving power from a driving source M3 such as a motor, and between the two reels R1 and R2 is a double-sided tape F as shown in FIG. 5. A guide plate 12 is provided for guiding the double-sided tape F to be separated from the sheet F1 at an adsorption point corresponding to the adsorption head 8 when moved along the.

The guide plate 12 moves in the opposite direction while the sheet paper F1 moving between the two reels R1 and R2 along their connection section passes through one end of the guide plate 12 as shown in FIG. 6. It is positioned to be wound upon return.

The guide plate 12 may be formed by separating the double-sided tape F from the sheet F1 when the sheet F1 is returned in the opposite direction while passing through one end of the guide plate 12. It serves to be able to be adsorbed smoothly by the adsorption force of 12).

The work table 2 is provided with means 14 for detecting the adsorption position of the tape F and correcting the positional deviation before adsorption of the double-sided tape F as in FIG.

The means 14 is a sensor (S) for detecting the position of the double-sided tape (F), the operation of the control unit (U) is controlled in accordance with the detection signal of the sensor (S) of the double-sided tape (F) And a conveying unit 18 for changing the suction position in at least two directions.

The sensor S may be an optical sensor or a micro camera set to detect an appropriate adsorption position of the tape F at a point where the double-sided tape F is adsorbed by the attachment head 8. .

These sensors, for example, by detecting the appropriate adsorption position of the tape (F) by the light emission and light reception of the light, or by detecting any point marked on one side of the double-sided tape (F) is detected by the control unit (U) It is connected so that it can be applied to the side.

As shown in FIG. 1, the transfer unit 16 has two moving plates P1 and P2 which are movable in different directions and are stacked on the work table 2, and above the two plates P1 and P2. The tape feeder 10 is installed on the plate P1 located.

Each plate (P1, P2) is reciprocated in the same direction as in the figure along a conventional guide rail (L), such as "LM guide" during forward and reverse rotation of the screw connected to the motor M4 axis as shown in FIG. The movement is made possible.

This structure is such that the adsorption of the double-sided tape F with the sensing sensor S before the double-sided tape F is adsorbed to the adsorption head 8 of the tape attaching machine 6 at the adsorption point of the double-sided tape F. A signal detected by detecting a position is applied to the controller U, and the controller U may correct the position of the double-sided tape F according to the applied signal.

That is, the control unit U controls the movement of the plates P1 and P2 of the transfer unit 16 according to the signal detected by the detection sensor S so that the suction position of the double-sided tape F is at least two. The position can be corrected within the allowable position deviation range corresponding to the attachment head 8 while changing beyond the direction.

As described above, the electrical connection structure for controlling the operation of the transfer unit 16 by the control unit U according to the signal of the sensor S can be easily performed by those skilled in the art. More detailed description is omitted.

 Therefore, the double-sided tape F supplied in the state where the suction position is corrected as described above is positioned above the stage 6 of the first rotary table T1 as shown in FIG. 2 while being sucked by the attachment head 8. It is moved and attached to the flexible substrate G in a state where the release paper F2 is attached by the pressing operation of the attachment head 8. In this way, when the attachment operation is performed in a state where the positional deviation of the tape F is corrected before the double-sided tape F is attached, the attachment accuracy of the flexible substrate G and the double-sided tape F is improved.

The tape attacher 6 is capable of pitch movement so that the double-sided tape F can be attached at each point corresponding to the plurality of flexible substrates G loaded on the stage 4.

To this end, in the present embodiment, as shown in FIG. 1, the second rotary table T2 is installed on the base plate P3 movably installed on the work table 2 so that the table T2 is the base plate P3. The attachment head 8 is moved to the attachment point corresponding to the plurality of flexible substrates G while the pitch is moved along.

The base plate P3 is reciprocated along a conventional guide rail L such as an "LM guide" by receiving power from the screw part of the screw during forward and reverse rotation of the screw connected to the motor M5 axis. It is done.

In addition, the attachment head 8 may be further provided with a roller (K) that operates in conjunction with the pitch movement operation of the base plate (P3), as shown in Figure 4, the roller (K) is the attachment head ( 8) The bottom surface is rotatably fixed as shown in the drawing.

The roller (K) is attached to the double-sided tape (F) in the state in contact with the flexible substrate (G) while the attachment head 8 is pressurized as shown in FIG. When rolling along the base plate (P3), while the rolling operation to press the tape (F) in a state that the tape (F) is attached to the flexible substrate (G) in a more uniform contact state.

On the circumferential outer side of the first rotary table 4, a seal material applying unit 18 for applying the moisture proof sealing material W to the circuit pattern of the flexible substrate G is installed as shown in FIG. 1.

The seal material applying unit 18 prevents moisture from penetrating between the adhesive surface of the IC chip (not shown) attached to the circuit pattern surface formed on the opposite surface to which the double-sided tape F is attached to the flexible substrate G. Ordinary sealing material (W) coating operation to be made possible.

To this end, in this embodiment, as shown in FIG. 8, the inversion head 20 formed on one side of the adsorption holes H capable of adsorbing the flexible substrate G at a vacuum pressure enables the rotation operation based on the hinge point. As shown in the figure, the posture of the flexible substrate G adsorbed to the inversion head 20 side is reversed by the rotational movement of the arm 22, as shown in the figure.

The inversion head 20 is fixed to the arm 22 in a position capable of attracting the flexible substrate G loaded on the stage 4 of the first rotary table T1, and the arm 22 is fixed to the arm 22. It is hinged to the fixing bracket 24 installed on the worktable (2).

The arm 22 is rotated based on a hinge point by receiving power from a driving source M6 such as a stepper motor installed in the fixed bracket 22, and inverting the arm 22 by the rotational movement of the arm 22. The flexible substrate G adsorbed on the head 20 side is changed into an inverted state.

On one side of the fixing bracket 24 is a coating unit 26 for applying the sealing material (W) to the flexible substrate (G) inverted posture. This unit 26 has a nozzle which can apply | coat the sealing material W, and consists of a conventional structure in which the sealing material W is apply | coated through this nozzle.

The sealing material (W) may be used a conventional sealing material used for moisture-proof operation of various circuit boards by using a silicone of excellent moisture-proof function or containing a component having a similar function.

The seal material applying unit 18 further includes a substrate transfer head 28 as shown in FIG. 8.

The substrate transfer head 28 is installed between the application unit 26 and the first rotary table T2 so as to be movable, and the flexible substrate G coated with the sealing material W in an inverted posture. It serves to load on the stage 4 side in an inverted state.

Although not shown in the drawing, the substrate transfer head 28 is connected to a vacuum generator, and adsorption holes H are formed on one side to detachably adsorb the flexible substrate G by vacuum pressure. It consists of a conventional adsorber structure capable of reciprocating between defined travel sections along a rail.

In addition, the substrate transfer head 28 is made to be adsorbed in a state that does not come into contact with the portion on which the seal member W is applied when the flexible substrate G is adsorbed.

Since the substrate transfer head 28 can load the flexible substrate G on the stage 4 side after the sealing material W is applied, the surface on which the sealing material W is applied is directed upward. It is possible to prevent the sealing material W in the non-solidified state from coming into contact with the stage 4.

As such, when the seal material applying unit 18 is installed at one side of the first rotation table T1 in the circumferential direction, the double-sided tape () may be formed on the flexible substrate G moving in the rotary manner along the first rotation table T1. F) The work of applying the moisture-proof sealing material W in connection with this attaching work can be easily carried out during the attaching work.

The work table 2 is provided with an indicator 30 for marking various identification symbols on one side of the flexible substrate G. This indicator 30 makes it possible to write an ordinary identifying symbol such as a lot number on the circuit pattern surface side among the facing surfaces of the flexible substrate G. FIG.

As shown in FIG. 1, the indicator 30 has a pattern surface of the flexible substrate G loaded on the stage 4 in a state where the sealing material W is applied on the circumferential outer side of the first rotation table 4. It is positioned so that an identification symbol can be displayed on the screen.

The indicator 30 is made of a conventional laser processing machine structure used for marking various identification symbols, letters, etc. on the surface of a workpiece by using a laser.

When the indicator 30 is installed as described above, the double-sided tape F and the sealing material W are applied to the flexible substrate G while moving along the first rotary table T1 in a rotary manner. Since the identification symbol can be easily displayed, at least three multi-tasks can be easily performed within the rotation radius of the first rotating table T1.

In addition, the flexible board G having the double-sided tape F attached thereto and the sealing material W and the identification symbol applied and marked on the opposite surface of the flexible substrate G while moving in a rotary manner along the first rotary table T1 is indicated by the identification symbol. It is unloaded from the stage 4 at the point where the work is completed or unloaded along the first turntable T1 with the first loading point as shown in FIG. 1. The unloading and loading operations of the flexible substrate G may be performed by a normal transfer machine although not shown in the drawings.

As described above, the present invention, while the flexible circuit board is loaded on the rotary table while moving in a rotary manner along this table, as well as double-sided tape is attached, and at least three or more, such as the application of the seal material for moisture proof and notation of identification symbols Work can be simple.

In particular, when the multi-task is performed while moving in a rotary manner by the rotary table, it is easy to secure the work area and can reduce work time by reducing the occurrence of holding time, thereby greatly improving work efficiency and productivity.

Claims (7)

Worktable providing work surface; A first rotary table that is rotated on the work table by receiving power from a driving source and is provided with a plurality of stages for loading the flexible circuit board; A second rotary table positioned apart from the first rotary table and provided to have a rotary surface at a point higher than the rotary surface of the first rotary table; A tape attacher installed on the second turntable, the tape attacher having a double-sided tape moving along the second turntable and having an attachment head for attaching the tape to a flexible printed circuit board loaded on the stage; A double-sided tape, which is located on the circumferential outer side of the second rotary table and wound in a roll form, is connected between two reels to move one reel from one reel to another reel one by one on the attachment head at one side of the moving section. A tape feeder to be adsorbed; A double-sided tape is attached to the opposite surface of the substrate by inverting the attitude of the flexible printed circuit board loaded on the stage by an inverting head mounted on an arm that is located on the circumferential outer side of the first rotating table and capable of rotating based on a hinge point. A seal material applicator for applying a seal material for moisture proof of a circuit pattern formed on an opposite side of the surface; An indicator for displaying a unique identification symbol by irradiating a laser onto a surface to which a sealing material is applied on the flexible circuit board; Double-sided tape attachment device for attaching a flexible circuit board comprising a main circuit board. The method according to claim 1, The stage may be installed at a plurality of points equally divided along the circumferential direction of the first rotating table, and an upper surface of each stage may include adsorption holes for detachably fixing one or more flexible circuit boards under vacuum pressure. Double-sided tape attachment device for attaching flexible circuit board to main circuit board. The method according to claim 1. The attachment head and the inversion head may include a flexible circuit board formed on one side of each of the heads with suction holes for detachably fixing either side of the double-sided tape or the flexible circuit board by vacuum pressure. Double sided tape attachment device for The method according to claim 1, The tape feeder further includes a guide plate for guiding the transfer path of the double-sided tape between the two reels, The guide plate is configured to guide the moving path so that the sheet paper traveling in one direction is returned in the opposite direction to the traveling direction while passing through one side edge so that the double-sided tape is gradually separated from the sheet at the return point. Double sided tape attachment device for attaching plate to main circuit board. The method according to claim 1, Double-sided tape attachment device for attaching the flexible circuit board to the main circuit board, Means for detecting and correcting the adsorption position of the tape at the point where the double-sided tape is adsorbed, The main circuit board comprises a flexible circuit board including a sensing sensor for sensing the position of the double-sided tape and a moving plate whose position is changed in at least two directions while the operation is controlled from the controller according to the sensing signal of the sensor. Double sided tape attachment device for attachment The method according to claim 5, The detection sensor is used among an optical sensor or a micro camera, The movable plate has at least two plates stacked on each side, and each plate is double-sided to attach the flexible circuit board to the main circuit board, which is movable in different directions by forward and reverse rotation of the screw connected to the motor shaft. Tape attaching device. The method according to claim 1, The tape attacher is installed on a plate that is moved by forward and reverse rotation of a screw connected to a motor shaft to move along an arrangement direction of a plurality of flexible circuit boards loaded on the stage, and moves along the plate. A double-sided tape attachment device for attaching a flexible circuit board to a main circuit board, wherein the flexible circuit board is fixed to the attachment point corresponding to each circuit board.

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