JP4144585B2 - Electronic component pressing device and pressing method - Google Patents

Description

  The present invention relates to an electronic component pressing device and a pressing method for pressing an electronic component against a substrate such as a display panel.

  A display panel such as a liquid crystal panel is assembled by mounting electronic components for drivers on a glass substrate. For mounting electronic components, an adhesive such as ACF (anisotropic conductive agent) is used, and the component mounted on the tape-shaped ACF attached to the mounting position of the glass substrate is pressed with a pressing tool. While heating, the ACF is cured and the component is fixed to the glass substrate. In the mounting by the pressing tool, as a cushioning material for pressing the electronic component uniformly by the pressing tool, and in order to prevent the protruding ACF from adhering to the pressing tool, the lower surface of the pressing tool and the electronic component A sheet is interposed between the two.

  A sheet having a long sheet shape is generally used as such a sheet, and is supplied to the pressing device while being wound around a supply reel. At the time of use, the sheet is pulled out from the supply reel by a predetermined amount, is fed between the lower surface side of the pressing tool and the upper surface of the electronic component, and is wound on the take-up reel. In the apparatus configuration, there is a case where a so-called cassette type sheet supply unit in which the supply reel and the take-up reel are integrally configured and detachable from the apparatus main body is used (for example, see Patent Document 1).

  In the example shown in this patent document, the sheet supply unit is mounted from the front side of the apparatus through a gap below the pressing tool, and in the mounted state, the supply reel is positioned on the front side of the pressing tool and is wound up. The reel is positioned behind the pressing tool. Then, after all the sheets wound and stored on the supply reel are used and wound on the take-up reel, after the used sheet is rewound onto the supply reel, the sheet supply unit is pulled out to the front side, The procedure was to install a new sheet on the supply reel.

By adopting such a configuration, the sheet supply unit can be pulled out from the apparatus main body in a state where the sheet is not wound around the take-up reel positioned behind the pressing tool. Accordingly, there is an advantage that the take-up reel does not interfere with the pressing tool when the unit is pulled out, and the lifting stroke of the pressing tool is set as small as possible, so that the apparatus can be made compact and the operation time can be shortened.
JP 2003-209145 A

  However, in the conventional apparatus shown in the above-mentioned patent document example, it is necessary to perform an operation of rewinding a used sheet from the rewind reel to the supply reel every time the sheet runs out. This unwinding of the sheet is a work that requires a considerable amount of time, and the apparatus must be stopped completely during execution of this work, resulting in a decrease in the apparatus operating rate.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic component pressing device and a pressing method capable of reducing the working time during sheet replenishment and improving the apparatus operating rate.

An electronic component pressing device according to the present invention is an electronic component pressing device that presses an electronic component mounted on an upper surface of a substrate with a pressing tool, and the electronic component is moved against the substrate by moving the pressing tool up and down. A component pressing mechanism that presses the sheet, a sheet supply unit that is detachably attached to the component pressing mechanism, and supplies a sheet between the lower surface of the pressing tool and the upper surface of the electronic component, and the sheet supply unit. A sheet supply unit that is provided and stores the sheet in a wound state, a sheet winding unit that winds up the sheet supplied from the sheet supply unit, and a sheet that is supplied from the sheet supply unit to the sheet winding unit A sheet that can be controlled both when the sheet is fed and when the sheet is unwound from the sheet take-up unit. And a feed mechanism.

  The electronic component pressing method according to the present invention includes a component pressing mechanism that presses an electronic component against a substrate by raising and lowering the pressing tool, and a sheet that is detachably attached to the component pressing mechanism and a lower surface of the pressing tool. A sheet supply unit that is supplied between the sheet supply unit and the upper surface of the electronic component, a sheet supply unit that is provided in the sheet supply unit and stores the sheet in a wound state, and the sheet supplied from the sheet supply unit is wound An electronic component pressing method in which an electronic component mounted on a substrate is pressed by a pressing tool by an electronic component pressing device including a sheet take-up unit to take out the unused sheet from the sheet supply unit A sheet feeding step of winding the fed sheet by the sheet winding unit, and the sheet feeding step after the sheet feeding step. A sheet rewinding step for rewinding the sheet wound around the sheet winding unit to the sheet supply unit, and in the sheet feeding step, a component that presses the electronic component against the substrate through the sheet by the pressing tool Repeating the pressing operation, each time the component pressing operation, the sheet feeding mechanism sends out the sheet at a feeding pitch twice the specified sheet usage length in the unit pressing operation from the sheet supply unit, in the sheet rewinding step, A sheet positioning operation for aligning an unused portion that has not been pressed in the sheet feeding step with a pressing position by the pressing tool is repeated, and the component pressing operation is executed by the pressing tool for each sheet positioning operation. .

  According to the present invention, in the sheet feeding step of feeding the sheet from the sheet feeding unit to the sheet winding unit, the sheet is fed at a feeding pitch that is twice the specified sheet usage length, and the sheet is used at a pitch of one jump, In the sheet rewinding step for rewinding the wound sheet, the unused portion that has not been pressed in the sheet feeding step is aligned with the pressing position by the pressing tool, so that the sheet winding unit is used to pull out the sheet supply unit from the apparatus. It is possible to eliminate the return work, shorten the work time when the sheet is replenished, and improve the operation efficiency of the apparatus.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are side views of an electronic component pressing device according to an embodiment of the present invention, FIG. 3 is a configuration explanatory view of a sheet feeding mechanism of the electronic component pressing device according to an embodiment of the present invention, and FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 9, FIG. 10, and FIG. 11 are operation explanatory views of the electronic device pressing device according to one embodiment of the present invention.

  First, the structure of the electronic device pressing device will be described with reference to FIG. This electronic component pressing device has a function of pressing an electronic component mounted on an upper surface of a substrate such as a glass substrate used as a display panel by pressing it with a pressing tool. In FIG. 1, a board positioning portion 2 and a component pressing mechanism 3 are disposed on a base 1. The substrate positioning unit 2 is configured by mounting a substrate holding unit 5 on a substrate positioning table 4, and a substrate 6 is held on the upper surface of the substrate holding unit 5. The substrate 6 is a glass substrate, and an electronic component 7 is mounted on the edge of the substrate 6 by pressure bonding. The electronic component 7 is carried in a state of being mounted on the substrate 6 in advance, and in this electronic component pressing device, the electronic component 7 is pressed by pressing the electronic component 7 against the substrate 6.

  The component pressing mechanism 3 has a configuration in which a pressing tool 11 that is lifted and lowered by a lifting drive unit 10 is disposed on a frame 3 a that is erected on a base 1. Part 12 is arranged. By driving the substrate positioning unit 2, the edge of the substrate 6 held by the substrate holding unit 5 is aligned with the lower receiving unit 12, whereby the electronic component 7 is positioned directly below the pressing tool 11. By driving the lifting drive unit 10 in this state, the pressing tool 11 descends and presses the electronic component 7 downward, whereby the electronic component 7 is pressure-bonded to the substrate 6. The reaction force at the time of pressing is supported from below by the lower receiving portion 12. That is, the component pressing mechanism 3 presses the electronic component 7 against the substrate 6 by moving the pressing tool 11 up and down.

  A supply mounting unit 17 and a winding mounting unit 18 are arranged on both sides of the frame 3a. A sheet supply unit 13 for supplying a long sheet 16 is provided in the supply mounting unit 17 and the winding mounting unit 18. The component pressing mechanism 3 is detachably mounted. The sheet 16 is guided by the guide roller 19 and is interposed between the lower surface of the pressing tool 11 and the upper surface of the electronic component 7 in the pressing operation, so that the contact state between the pressing tool 11 and the electronic component 7 in the pressing process is uniform. In addition to serving as a cushioning material, the pressing tool 11 is prevented from being damaged by the joining material used for pressure bonding.

  The sheet supply unit 13 has a configuration in which a sheet supply unit 14 and a sheet take-up unit 15 are provided at both ends of a substantially horizontal elongated cassette frame 13a. Each of the sheet supply unit 14 and the sheet winding unit 15 includes a winding shaft that winds the sheet 16, and the sheet 16 is fed and wound by rotating each winding shaft by a sheet feeding mechanism described later. It can be taken. An unused sheet 16 is stored in a wound state in the sheet supply unit 14, and the sheet 16 after being used by being supplied from the sheet supply unit 14 is wound up in the sheet winding unit 15.

  FIG. 2 shows a state when the sheet supply unit 13 is mounted on the component pressing mechanism 3 and a pressing operation is performed. In this mounted state, the sheet supply unit 14 is mounted on the supply mounting unit 17 and the sheet winding unit 15 is mounted on the winding mounting unit 18, whereby the sheet 16 is fed below the pressing tool 11. In the board positioning unit 2, the board holding unit 5 is moved relative to the component pressing mechanism 3 by the board positioning table 4, and the edge of the board 6 held on the board holding unit 5 is positioned on the lower receiving unit 12. To be combined. By lowering the pressing tool 11 in this state, the pressing tool 11 comes into contact with the upper surface of the electronic component 7 via the sheet 16, and the electronic component 7 is pressed against the substrate 6.

  Next, a sheet feeding mechanism for feeding and winding the sheet 16 will be described with reference to FIG. In FIG. 3A, the supply mounting unit 17 and the winding mounting unit 18 are respectively provided with sheet feeding and winding mechanisms 20A and 20B incorporating a rotation drive source, and the sheet feeding and winding mechanisms 20A and 20B are respectively provided. It has shaft fitting parts 21A and 21B. When the sheet supply unit 13 is mounted on the component pressing mechanism 3 and the sheet supply unit 14 and the sheet winding unit 15 are fitted to the supply mounting unit 17 and the winding mounting unit 18, the shaft fitting units 21 </ b> A and 21 </ b> B are The sheet supply unit 14 and the sheet winding unit 15 are connected to respective winding shafts.

  Each of the sheet feeding and winding mechanisms 20A and 20B is controlled by a sheet feeding control unit 23. As a result, as shown in FIG. 3B, the sheet 16 wound and stored in the sheet feeding unit 14 is stored in the sheet winding unit. 15, and the sheet 16 once wound by the sheet winding unit 15 can be rewound to the sheet supply unit 14.

Accordingly, the sheet feeding and winding mechanisms 20A and 20B, the shaft fitting portions 21A and 21B, and the sheet feeding control unit 23 are the sheet supply length when the sheet 16 is supplied from the sheet supply unit 14 to the sheet winding unit 15. The sheet feeding mechanism can control both the sheet unwinding length when the sheet 16 is rewound from the sheet winding unit 15 to the sheet supply unit 14.

  The sheet feeding and winding mechanisms 20A and 20B include sheet breakage detection units 22A and 22B, respectively. In the sheet winding unit 15 from the sheet supply unit 14 mounted on the supply mounting unit 17 and the winding mounting unit 18, respectively. It is possible to detect that the winding amount of the sheet 16 has become a predetermined amount or less. The sheet breakage detection unit 22A functions as a sheet breakage detection unit that detects that the sheet winding amount of the sheet supply unit 14 has become a predetermined amount or less.

  Next, with reference to FIGS. 4-11, the electronic component pressing method which presses the electronic component 7 mounted on the board | substrate 6 with the pressing tool 11 is demonstrated. In FIG. 4A, a substrate 6 on which an electronic component 7 is previously mounted is held on the substrate holding portion 5, and the lower surface of the edge portion on which the electronic component 7 is mounted is supported by a lower receiving portion 12. Yes. A sheet supply unit 13 is not yet mounted on the component pressing mechanism 3, and a new sheet supply unit 13 in which an unused sheet 16 is wound and stored in the sheet supply unit 14 is prepared. FIG. 4B shows a state where the sheet supply unit 13 is mounted on the component pressing mechanism 3. A sheet supply unit 14 and a sheet winding unit 15 are fitted to the supply mounting unit 17 and the winding mounting unit 18, respectively, and a sheet 16 is interposed between the pressing tool 11 and the upper surface of the electronic component 7 in the component pressing mechanism 3. Is located.

  When the pressing operation is started, the pressing tool 11 descends to press the electronic component 7 against the substrate 6 through the sheet 16 as shown in FIG. The pressing reaction force at this time is supported by the lower receiving portion 12. When the pressing operation is completed, the pressing tool 11 is raised as shown in FIG. 5B, and sheet feeding is performed. That is, by feeding the sheet 16 from the sheet supply unit 14 and winding it on the sheet winding unit 15, the sheet 16 used in the pressing operation is pitch-fed by a predetermined feeding pitch.

  Then, the substrate 6 after pressing is unloaded and a new substrate 6 is loaded, and the same pressing operation is repeatedly performed, and sheet feeding is performed each time the pressing operation is performed. Then, by repeating these pressing operations and sheet feeding, as shown in FIG. 6A, all the sheets 16 initially wound and stored in the sheet feeding unit 14 in the sheet feeding unit 13 are sent out and sent out. The sheet 16 thus wound is wound on the sheet winding unit 15. That is, the above-described operation step corresponds to a sheet feeding step in which an unused sheet 16 is fed from the sheet supply unit 14 and the fed sheet 16 is wound by the sheet winding unit 15.

  Here, the sheet feeding amount in the above-described sheet feeding step will be described with reference to FIG. In FIG. 9A, sheet ranges A1, B1, A2, B2,... Indicate ranges in which the sheet 16 is sandwiched and used when the electronic component 7 is pressed by the pressing tool 11. These sheet ranges are substantially equal to the width b of the pressing tool 11, and the sheet use pitch P is set by adding a margin width to the width b in the pressing operation. That is, the sheet use pitch P corresponds to the prescribed sheet use length in the unit pressing operation when the pressing tool 11 is lowered once to perform the pressing operation.

Here, in this embodiment, a length 2P that is twice the above-described sheet use pitch P is used as the feed pitch of the sheet 16 in the sheet feed step. As shown in FIG. 9B, after the sheet range A1 corresponding to the cueing position of the sheet 16 is first used, the sheet 16 is sequentially fed by the feed pitch 2P each time the pressing operation is performed. A2, A3,... Are aligned with the pressing tool 11. That is, in the sheet feeding step, the sheet range set for each sheet use pitch P is used for the sheet 16 one by one, and the sheet range A2,
The sheet is fed while the sheet ranges B1, B2,... Adjacent to A3.

  FIG. 9C shows a state in which the sheet is fed in this way and the vicinity of the end portion of the sheet 16 is aligned with the pressing tool 11. The sheet range Bn is a usage range at the final end of the sheet 16, and the sheet range An indicates a usage range on the immediately preceding side, and the sheet range An is aligned with the pressing tool 11 in the sheet feeding step. Until the sheet 16 is fed at a feed pitch 2P. The fact that the final end of the sheet 16 has arrived at the pressing tool 11 is detected by the sheet breakage detection unit 22A.

  In this way, the sheet 16 of the sheet supply unit 14 is taken up by the sheet take-up unit 15, and it is detected by the sheet breakage detection unit 22A that the sheet winding amount of the sheet supply unit 14 is equal to or less than a predetermined amount. After the feeding step is completed, as shown in FIG. 6B, the sheet feeding direction is reversed and the sheet 16 once wound on the sheet winding unit 15 is rewound by the sheet feeding unit 14 in the same manner. The pressing operation is continued. That is, after the sheet feeding step, the process proceeds to a sheet rewinding step for rewinding the sheet 16 wound on the sheet winding unit 15 to the sheet supply unit 14.

  At this time, depending on the state of the sheet range Bn at the final end, an operation mode at the time of reversal of the sheet feeding direction (operation when aligning the unused portion of the sheet 16 that is closest and usable to the pressing tool 11 with the pressing tool 11) Embodiment) is different. That is, when the sheet range Bn has a usable width and normal winding by the sheet winding unit 15 is possible, as shown in FIG. Further, after the sheet is wound by the sheet winding unit 15 and the sheet range Bn is used, the sheet feeding direction of the sheet 16 is reversed as shown in FIG. Just rewind. Thus, the unused sheet range Bn-1 is aligned with the pressing tool 11 in the sheet feeding step.

  Further, in FIG. 10A, when the sheet range Bn does not have a sufficient width for use and the sheet feeding becomes impossible without completing the normal sheet feeding, the sheet feeding direction of the sheet 16 is directly reversed. 11A, the sheet 16 is rewound from the sheet range An by the sheet use pitch P, and the sheet range Bn-1 is aligned with the pressing tool 11. Then, the sheet range Bn-2 is aligned with the pressing tool 11, and thereafter the sheet 16 is sequentially rewound at the feed pitch 2P in the same manner. As a result, the unused range that has been skipped unused in the sheet feeding step is sequentially aligned with the pressing tool 11, and as shown in FIG. A pressing operation for pressing the component 7 is performed. Then, as shown in FIG. 7B, the sheet 16 is rewound.

  By repeatedly performing the pressing operation and the sheet rewinding in this manner, all the sheets 16 once wound on the sheet winding unit 15 are rewound to the sheet supply unit 14 as shown in FIG. . As a result, the entire sheet range of the sheet 16 supplied by the sheet supply unit 13 mounted on the component pressing mechanism 3 is used. Thereafter, as shown in FIG. 8B, the sheet supply unit 13 is detached from the component pressing mechanism 3.

When the sheet supply unit 13 is removed, all the sheets 16 are rewound to the sheet supply unit 14 and are in the same state as in the initial mounting shown in FIG. For this reason, since only the sheet take-up portion 15 that has been emptied in the detaching operation of the sheet supply unit 13 passes below the pressing tool 11, the clear height of the pressing tool 11 (when the pressing tool 11 is raised, The gap between the upper end of the lower receiving part 12 and the lower end of the pressing tool 11 can be set small. That is, when the used sheet supply unit is taken out, the clear height of the pressing tool 11 can be set smaller than when the sheet supply unit is pulled out with an increased diameter on the sheet winding unit side, and the apparatus is made compact. Is realized.

  In the electronic component pressing method described above, in the above-described sheet feeding step, the component pressing operation of pressing the electronic component 7 against the substrate 6 via the sheet 16 by the pressing tool 11 is repeated, and the sheet feeding mechanism is performed every component pressing operation. Accordingly, the sheet 16 is sent out from the sheet supply unit 14 at a feed pitch 2P that is twice the specified sheet use length in the unit pressing operation. In the sheet rewinding step, the sheet positioning operation for aligning the unused portion that has not been pressed in the sheet feeding step with the pressing position by the pressing tool 11 is repeated, and the component is pressed by the pressing tool 11 for each sheet positioning operation. A mode of executing the operation is adopted, and after detecting that the sheet winding amount of the sheet supply unit 14 is equal to or less than a predetermined amount, an unused portion is aligned with the pressing tool 11.

  By adopting such a method, the sheet unwinding operation that is required every time the sheet supply unit is replaced in the conventional apparatus, that is, the operation of unwinding the used sheet wound on the winding side is performed. Sheet replacement can be performed without any trouble, and the apparatus operation stop time can be shortened. Further, in the present embodiment, since sheet breakage is detected at the end of the sheet feeding step, it is possible to know the timing at which half of the usable sheet length is used. As a result, the remaining amount of sheets that can be continuously used by the sheet unit can be grasped, and the timing at which the next sheet unit replacement is required can be predicted with high accuracy. Therefore, it is possible to improve the work efficiency by preventing the generation of dead time during the sheet exchange work as much as possible.

  The electronic component pressing device and the electronic component pressing method of the present invention have the effect of reducing the work time during sheet replenishment and improving the operation efficiency of the device, and press the electronic component against the substrate. Can be used in the mounting field.

The side view of the pressing device of the electronic component of one embodiment of this invention The side view of the pressing device of the electronic component of one embodiment of this invention Structure explanatory drawing of the sheet | seat feed mechanism of the press device of the electronic component of one embodiment of this invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention Operational explanatory diagram of the electronic device pressing device according to an embodiment of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Substrate positioning part 3 Component pressing mechanism 5 Substrate holding part 6 Substrate 7 Electronic component 10 Lifting drive part 13 Sheet supply unit 14 Sheet supply part 15 Sheet winding part 16 Sheet 17 Supply mounting part 18 Winding mounting part 20A, 20B Sheet feeding Feeding mechanism 21A, 21B Shaft fitting part

Claims (4)

  An electronic component pressing device that presses an electronic component mounted on an upper surface of a substrate with a pressing tool, the component pressing mechanism pressing the electronic component against the substrate by moving the pressing tool up and down, and the component A sheet supply unit that is detachably attached to the pressing mechanism and supplies a sheet between the lower surface of the pressing tool and the upper surface of the electronic component, and the sheet is provided in the sheet supply unit and stored in a wound state. Sheet supply unit, a sheet winding unit that winds up the sheet supplied from the sheet supply unit, a sheet supply length when the sheet is supplied from the sheet supply unit to the sheet winding unit, and the sheet winding A sheet feeding mechanism capable of controlling any of the sheet unwinding lengths when the sheet feeding unit sheet is rewound from the take-up unit. Pressing device of electronic components.   The electronic component pressing device according to claim 1, further comprising: a sheet breakage detecting unit configured to detect that the sheet winding amount of the sheet supply unit is equal to or less than a predetermined amount. A component pressing mechanism that presses the electronic component against the substrate by raising and lowering the pressing tool, and a sheet that is detachably mounted on the component pressing mechanism and a sheet is disposed between the lower surface of the pressing tool and the upper surface of the electronic component. An electronic apparatus comprising: a sheet supply unit that supplies the sheet; a sheet supply unit that is provided in the sheet supply unit and stores the sheet in a wound state; and a sheet winding unit that winds the sheet supplied from the sheet supply unit An electronic component pressing method in which an electronic component mounted on a substrate is pressed with a pressing tool by a component pressing device,
A sheet feeding step of feeding the unused sheet from the sheet feeding unit and winding the fed sheet by the sheet winding unit; and the sheet wound on the sheet winding unit after the sheet feeding step A sheet rewinding step for rewinding the sheet to the sheet supply unit,
In the sheet feeding step, the component pressing operation of pressing the electronic component against the substrate through the sheet by the pressing tool is repeated, and the unit feeding operation is defined by the sheet feeding mechanism from the sheet supply unit for each of the component pressing operations. Sending out the sheet at a feed pitch twice the sheet usage length,
In the sheet rewinding step, a sheet alignment operation for aligning an unused portion that has not been pressed in the sheet feeding step with a pressing position by the pressing tool is repeated by the pressing tool for each sheet positioning operation. An electronic component pressing method, wherein the component pressing operation is executed. 4. The method of pressing an electronic component according to claim 3, wherein the unused portion is aligned with the pressing tool after detecting that the sheet winding amount of the sheet supply unit is equal to or less than a predetermined amount. .

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