JP2015060900A - Tape attaching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape attaching device that can stably cool the whole body of a supply reel around which anisotropic conductive tape is wound and accommodated.SOLUTION: A tape attaching device has a first cover 9 fixed to a base plate through a bracket, and a cover member comprising a second cover 10 that is freely attachable to and detachable from the first cover 9. A nozzle 34 having a first pipe line 31 and a second pipe line 33 formed therein are mounted to the back surface b of the upper portion of the first cover 9. One end portion of the first pipe line 31 intercommunicates with the surface of the nozzle 34 which is exposed to the surface a through an opening portion 9a of the first cover 9, and the other end portion of the first pipe line 31 intercommunicates with the second pipe line 33. The first pipe line 31 and the second pipe line 33 are connected to a cooling air generating machine 32 through a tube 35, and generated cooling air is blown out from the opening portion 31a as the one end portion of the first pipe line 31 to a space T in the cover member 7, whereby the supply reel 18 which is wholly covered by the cover member 7 can be cooled.

Description

  The present invention relates to a tape applicator for attaching an anisotropic conductive tape used for mounting a component on a substrate such as a display panel to the substrate.

  In component mounting in which a component such as an IC is mounted on a side edge of a substrate such as a display panel, an ACF having an anisotropic conductive film (Anisotropic Conductive Film) formed into a tape shape by a tape applicator prior to the component mounting operation. The tape is cut into a predetermined length, and a tape affixing operation for affixing the separated ACF tape (hereinafter referred to as “individual tape”) to the side edge of the substrate is executed.

  Specifically, a supply reel on which a tape member having an ACF tape attached to one side of the separator is wound is attached to the apparatus, and the tape member is pulled out from the supply reel via a tape drawing mechanism. The leading portion of the drawn ACF tape is cut into a predetermined length by a cutter, thereby forming an individual tape on the separator. Then, the individual tape is positioned in a horizontal position above the tape application position set on the side edge of the substrate, and in this state, the individual tape is thermocompression bonded to the substrate with a crimping tool (for example, Patent Document 1). See). The substrate to which the piece tape is affixed is subjected to thermocompression bonding through the piece tape in a subsequent process.

  ACF tape is usually recommended to be used in an environment of 30 ° C. or lower in order to suppress deterioration of quality. In addition, following the reduction in thickness and weight of electronic devices such as mobile terminals, the board to be incorporated therein is becoming thinner, and when components are thermocompression bonded to such a board at high temperatures, The substrate may be warped due to the difference in thermal expansion and contraction between the components. The warpage of the substrate causes display unevenness in the peripheral portion of the display panel. In order to solve such problems, efforts have been made to lower the temperature during thermocompression bonding using an ACF tape that is cured at a lower temperature than in the past.

International Publication No. 2010/084728

  Low temperature curing type ACF tapes have a shorter working life than normal ACF tapes, and the ambient temperature is lower than 30 ° C (as a guideline, approximately 9 hours under a 23 ° C temperature environment). However, the inside of the facility can rise to around 30 ° C. by the operation of each mechanism including a heater for thermocompression bonding. In particular, since the supply reel is often installed above the crimping tool, the surface temperature is likely to rise due to heat generated from the crimping tool. On the other hand, in order to reduce the replacement frequency of the supply reel, a long supply reel is used, and the time during which the ACF tape is exposed to a high temperature environment is longer than before. However, component mounting using a low-temperature curing type ACF tape is a new technology that has begun to be implemented in recent years. Therefore, the supply reel around which the ACF tape is wound is stably cooled during the tape application operation to suppress deterioration. There was no specific solution yet.

  Then, an object of this invention is to provide the tape sticking apparatus which can cool stably the whole supply reel which wound and accommodated the anisotropic conductive tape.

  In the present invention according to claim 1, the anisotropic conductive tape is cut into a predetermined affixing length to form an individual tape, and the individual tape is applied to the tape application position set on the substrate by using a crimping tool. A tape affixing device for affixing the tape member drawn out from a supply reel on which a tape member formed by laminating the anisotropic conductive tape on a separator is wound. A cover member configured to hold the supply reel in a state of being confined in a space partitioned from the outside, and a cooling unit configured to cool the space in the cover member in which the supply reel is held; It was.

  According to the present invention, the tape feeding port for feeding the tape member pulled out from the supply reel to the lower side of the crimping tool is formed, and the cover that holds the supply reel in a state of being confined in the space partitioned from the outside world Since the cooling means for cooling the member and the space in the cover member in which the supply reel is held is provided, the entire supply reel can be stably cooled and deterioration of the anisotropic conductive tape can be suppressed.

The perspective view of the component mounting machine in one embodiment of this invention The perspective view of the tape sticking apparatus in one embodiment of this invention The perspective view of the tape sticking apparatus in one embodiment of this invention The side view of the tape sticking apparatus in one embodiment of this invention The side view of the tape sticking apparatus in one embodiment of this invention

  First, a component mounter according to an embodiment of the present invention will be described with reference to FIG. The component mounting machine 1 has a function of mounting electronic components on a board, and a tape sticking device, a temporary crimping device, and a main crimping device are placed in the board transport direction (X direction) in the interior space inside the housing 2. Arranged and configured. The tape affixing device cuts an anisotropic conductive tape (hereinafter referred to as “ACF tape”) in which an anisotropic conductive film is formed into a tape into individual pieces having a predetermined affixing length and affixes them to a substrate. The temporary pressure bonding apparatus temporarily pressure-bonds (mounts) an electronic component to a piece of tape attached to a substrate. This crimping | compression-bonding apparatus crimps | bonds an electronic component to a board | substrate by pressing the electronic component temporarily crimped | bonded to the board | substrate via the piece tape.

  In the area on the front side of the housing 2, a plurality of doors 3 are formed to open and close corresponding to the tape applicator, the temporary crimping device, and the main crimping device. The operator opens the door 3 and performs maintenance and inspection work such as repair and adjustment of each device in the housing 2 and replacement of consumable parts. In addition, a plurality of outside air introduction devices 4 are attached to the upper portion of the housing 2 corresponding to the tape sticking device, the temporary pressure bonding device, and the main pressure bonding device. By driving the outside air introduction device 4, the air in the clean room in which the component mounter 1 is installed is introduced into the interior space.

  Next, the tape applicator will be described with reference to the drawings after FIG. 2 and 3, the tape applicator 5 is mainly composed of a plate-like base plate 6 whose upper portion is cut out by a predetermined thickness, and a predetermined position of the cut-out upper portion is orthogonal to the longitudinal direction of the base plate 6. A cover member 7 is attached via a bracket 8 (FIG. 3) along the direction (Y direction).

  The cover member 7 includes a first flat plate-like cover 9 having magnetism fixed to the bracket 8 and a second cover 10 that is detachable from the first cover 9. The second cover 10 is formed along the outer edge of the plate-like portion 10a, and is formed along the outer edge of the plate-like portion 10a. The transparent plate-like portion 10a is formed according to the shape of the first cover 9. It consists of a transparent side wall portion 10b having a thickness of width L1 (FIG. 4) in the orthogonal direction.

  Thereafter, as shown in FIGS. 4 and 5, the surface of the first cover 9 that faces the second cover 10 in the state where the second cover 10 is attached to the first cover 9 is referred to as “surface a”, The opposite side of the front surface a is referred to as “back surface b”. Further, the surface of the plate-like portion 10a facing the first cover 9 is referred to as “back surface c”, and the opposite side of the back surface c is referred to as “front surface d”. As shown in FIGS. 4 and 5, the side wall portion 10b is formed on the back surface c side of the plate-like portion 10a.

  4 and 5, the side surface of the side wall portion 10b formed at the upper end of the plate-like portion 10a includes a protruding portion 11a protruding in the horizontal direction and a bent portion 11b extending downward from the tip of the protruding portion 11a. A plurality of hooks 11 (two in this case) are provided. The distance between the packing 12 a and the bent portion 11 b (FIG. 5) is set to be approximately the same as the width of the first cover 9. A seal member 12 having a packing 12a fixed to the tip is provided at a position on the lower surface of the side wall portion 10b formed at the upper end of the plate-like portion 10a and facing the protruding portion 11a. A packing 13 as a seal member is also provided on the side surface of the side wall portion 10b formed at the lower end of the plate-like portion 10a. Further, magnet members 14 extending in the horizontal direction are respectively attached to positions above and below the back surface c of the plate-like portion 10a.

  2 and 3, a U-shaped hooking portion 15 is provided on the upper surface of the side wall portion 10b formed at the upper end of the plate-like portion 10a. The hook 15 is used when the second cover 10 is hooked on a temporary placement hook (not shown) provided in the component mounting machine 1 when a supply reel 18 described later is replaced. A grip 16 for gripping when the operator carries the second cover 10 is provided on the surface d of the plate-like portion 10a.

  When the second cover 10 is attached to the first cover 9, the hook 11 is hooked on the upper end of the first cover 9 (FIG. 4). At this time, the upper end of the first cover 9 is sandwiched between the protruding portion 11 a and the packing 12 a, and the lower end of the first cover 9 is in close contact with the packing 13. Further, the tip of the magnet member 14 abuts against the surface of the first cover 9 with a magnetic force. Thereby, the favorable sealing of the 1st cover 9 and the 2nd cover 10 is ensured, and the space T (FIG. 4) partitioned off from the external world is formed inside the cover member 7. When removing the second cover 10 from the first cover 9, if the handle 16 is held and lifted with one hand, the hook 11 is released from being hooked on the first cover 9 (FIG. 5).

  3, 4, and 5, the first cover 9 is detachably mounted with a supply reel 18 in which a tape member 17 formed by laminating an ACF tape on a separator is wound. The ACF tape has adhesiveness and functions as a bonding material for bonding the substrate 19 and the electronic component. A motor 20 having a rotating shaft 20a penetrating the first cover 9 is disposed on the back surface b of the first cover 9, and a spinner (supply reel fixture) 21 is provided at the tip of the rotating shaft 20a. Is rotatably provided.

  The supply reel 18 is attached to the surface a side of the first cover 9 by being attached to the spinner 21, whereby the supply reel 18 is held by the cover member 7. Since the plate-like portion 10a of the second cover 10 is transparent, the operator can check the remaining tape amount of the supply reel 18 in the cover member 7 through the plate-like portion 10a. When the remaining amount of the ACF tape runs out (or decreases), the second cover 10 is removed from the first cover 9 and replaced with a new supply reel 18.

  By driving the motor 20, the supply reel 18 rotates through the spinner 21, and the tape member 17 that is wound and stored is pulled out. The drawn tape member 17 circulates around the tension roller 22a of the tension applying mechanism 22 shown in FIG. 3 and is guided downward (arrow e). The tension applying mechanism 22 has a function of applying a predetermined tension to the tape member 17 so that the drawn tape member 17 does not sag. The tension applying mechanism 22 may be attached to a member other than the first cover 9.

  As shown in FIGS. 2 and 3, in the side wall portion 10b formed below the plate-like portion 10a, the tape member 17 that is guided around the tension roller 22a is positioned at a position on the feeding path. A tape feeding port 10 c for feeding the member 17 out of the cover member 7 is formed. The opening area of the tape feeding port 10c is preferably set to a minimum size necessary for feeding the tape member 17. The tape member 17 that has passed through the tape feeding port 10c and has been fed out of the cover member 7 is fed below a crimping tool 30 described later. As described above, the cover member 7 is formed with the tape feeding port 10c for feeding the tape member 17 drawn from the supply reel 18 to the lower side of the crimping tool 30, and the supply reel 18 is connected to the outside (in-machine space). ) And confined in the space T partitioned.

  2 and 3, a first guide roller 23 and a second guide roller 24 are disposed in a horizontal position on both sides of the lower end portion of the base plate 6. The horizontal portion between the first guide roller 23 and the second guide roller 24 is an application work position for attaching the ACF tape to the tape application position 19 a of the substrate 19 by the crimping tool 30. The tape member 17 drawn from the supply reel 18 and passing through the tension applying mechanism 22 is twisted by a torsion mechanism (not shown), and when the first guide roller 23 is circulated, the ACF tape faces downward. Guided in the direction.

  A third guide roller 25, a fourth guide roller 26, and a fifth guide roller 27 are provided between the first guide roller 23 and the second guide roller 24 and at positions where they do not interfere with the crimping tool 30. ing. These guide rollers 25, 26, 27 are for guiding the tape member 17 fed between the first guide roller 23 and the second guide roller 24 in the horizontal direction.

  On the feeding path of the tape member 17 drawn from the supply reel 18, a cut portion 28 is disposed above the first guide roller 23. The cut portion 28 has a function of cutting only the ACF tape of the tape member using a cutting blade. Thereby, an individual tape having a predetermined length is formed.

  A crimping tool 30 that is moved up and down by an elevating mechanism 29 is disposed between the first guide roller 23 and the second guide roller 24 and above the X-direction feeding path of the tape member 17. The crimping tool 30 has a built-in heater.

  Next, the operation of attaching the piece tape will be described. An operation | movement here is made | formed when the control part with which the tape sticking apparatus 5 is equipped controls each mechanism. First, the edge part of the board | substrate 19 including the area | region in which the tape sticking position 19a was formed by the board | substrate positioning mechanism (illustration omitted) is positioned in the sticking work position below the crimping | compression-bonding tool 30. FIG. At this time, the edge portion of the substrate 19 is received by a receiving portion (not shown). Next, the crimping tool 30 is lowered with the piece tape positioned above the tape application position 19a, the piece tape is pressed against the substrate 19 with a predetermined load, and the piece tape is heated by the heater. Thereby, the piece tape is attached to the tape attaching position 19 a of the substrate 19. The tape member 17 in which the piece tape is affixed to the substrate 19 and becomes only a separator is guided upward around the second guide roller 24 and is collected by a tape collection unit (not shown).

  Thus, the tape applicator 5 cuts the anisotropic conductive tape to a predetermined application length to form an individual tape, and uses the crimping tool 30 at the tape application position 19 a set on the substrate 19. It has a function to attach a tape. In addition, the above-described individual tape sticking operation is performed while the supply reel 18 is cooled by a means described below while the supply reel 18 is held by the cover member 7 and confined in the space T.

  Next, the cooling function of the supply reel 18 included in the tape applicator 5 will be described. 4 and 5, a nozzle 34 is mounted on the upper back surface b of the first cover 9. An opening 9a is formed in the width direction in the upper portion of the first cover 9, and a part of the nozzle 34 is embedded in the opening 9a. Thereby, a part of surface of the nozzle 34 will be in the state exposed to the surface a side of the 1st cover 9 through the opening part 9a.

  A first pipe line 31 and a second pipe line 33 are formed inside the nozzle 34. A plurality of first conduits 31 are formed in a posture in which the inside of the opening 9a of the first cover 9 is inclined by a predetermined angle in the width direction. The lower end of both ends of the first conduit 31 communicates with the surface of the nozzle 34 exposed to the surface a side of the first cover 9 through the opening 9a. As a result, an opening 31 a (see also FIG. 3) that is one end of the first conduit 31 is provided on the surface a of the first cover 9. The opening 31 a is located above the supply reel 18 attached to the first cover 9. In addition, the number of the 1st pipe lines 31 may be one.

  The upper end of both ends of the first conduit 31 communicates with the second conduit 33, and the second conduit 33 is formed along the longitudinal direction of the nozzle 34. Further, the surface of the nozzle 34 exposed to the back surface b side of the first cover 9 is covered with a heat insulating member 34a for preventing condensation.

  The first pipe line 31 and the second pipe line 33 are connected to the cooling air generator 32 via a tube 35 whose surface is covered with a heat insulating material for preventing condensation. The cooling air generator 32 generates air for cooling the space T outside the cover member 7 (hereinafter referred to as “cooling air”). The temperature of the generated cooling air is a temperature at which the temperature of the space T can be kept around 20 ° C. (for example, 10 ° C. or less). In addition, as the cooling air generator 32, a device to which a vortic tube is applied can be used.

  The cooling air generated by the cooling air generator 32 is blown out from the opening 31 a to the space T in the cover member 7 via the tube 35, the second pipe 33, and the first pipe 31. Thereby, the supply reel 18 entirely covered with the cover member 7 can be cooled to suppress the deterioration of the ACF tape. In particular, a remarkable effect is obtained when using a low-temperature curable ACF tape that is required to be used in a short time in a low-temperature environment.

  Moreover, since the 1st pipe line 31 becomes the attitude | position inclined with respect to the horizontal surface, the cooling air which blown off from the opening part 31a can be circulated in the space T efficiently. Further, the opening 31a is formed at a position where the cooling air is not directly blown onto the supply reel 18 held by the cover member 7, thereby preventing condensation of the supply reel 18. Further, since the space T communicates with the outside world (in-machine space) only through the tape feeding port 10c formed below the cover member 7 (side wall portion 10b of the second cover 10), the cooling air flowing out to the outside world As a result, the cooling effect can be increased and the entire supply reel 18 can be stably cooled.

  By the way, since many heat sources such as thermocompression bonding tools are arranged inside the housing 2 of the component mounting machine 1, the temperature of the space inside the machine surrounded by the housing 2 makes it difficult to maintain the quality of the ACF tape. It becomes hot. However, according to the component mounter 1 in the present embodiment, clean room air managed at a constant temperature by the outside air introduction device 4 provided in the housing 2 is introduced into the interior space, thereby suppressing an increase in the temperature of the interior space. Thus, adverse effects on the supply reel 18 held by the cover member 7 can be further eliminated.

  In the above configuration, the opening 31a is provided in the cover member 7 (first cover 9) and serves as a blowout port for blowing out air for cooling the space T. Further, the first pipe line 31, the second pipe line 33, and the tube 35 are pipe lines that connect the air outlet and the cooling air generator 32. Furthermore, the opening 31 a, the first pipe line 31, the second pipe line 33, the tube 35, and the cooling air generator 32 are a cooling unit that cools the space T in the cover member 7 that holds the supply reel 18. It has become.

  The present invention is not limited to the embodiments described so far. For example, a configuration in which the first cover 9 and the second cover 10 are coupled by a hinge mechanism and the second cover 10 can be opened and closed with respect to the first cover 9 via the hinge mechanism may be employed. . In addition, a positioning pin extending in the horizontal direction is provided in place of the magnet member 14, and the first cover 9 and the second cover 10 are inserted by inserting the distal end portion of the positioning pin into an insertion port separately formed in the first cover 9. May be fixed.

  ADVANTAGE OF THE INVENTION According to this invention, the whole supply reel can be cooled stably, the deterioration of an anisotropic conductive tape can be suppressed, and the electronic component mounting field which mounts an electronic component on a board | substrate via an anisotropic conductive tape Useful in.

DESCRIPTION OF SYMBOLS 5 Tape sticking apparatus 7 Cover member 9 1st cover 10 2nd cover 10c Tape feeding port 17 Tape member 18 Supply reel 19 Substrate 19a Tape sticking position 30 Crimping tool 31 1st pipe line 31a Opening part 32 Cooling air production | generation Machine 33 Second pipe 35 Tube T space

Claims (4)

The anisotropic conductive tape is cut into a predetermined affixing length to form a piece tape, and a tape affixing device for affixing the piece tape using a crimping tool at a tape affixing position set on the substrate,
A tape feeding port for feeding the tape member drawn out from a supply reel wound with a tape member formed by laminating the anisotropic conductive tape on the separator to the lower side of the crimping tool is formed, and the supply A cover member that holds the reel in a state confined in a space partitioned from the outside world;
A tape affixing device comprising a cooling means for cooling the space in the cover member where the supply reel is held.   2. The tape sticking according to claim 1, wherein the cover member includes a first cover to which the supply reel is mounted and a second cover that is attachable to and detachable from the first cover. apparatus.   The cooling means is provided in the cover member and blows out air for cooling the space, a cooling air generator for generating the air outside the cover member, the outlet and the cooling air generation The tape sticking apparatus according to claim 1, further comprising a pipe line connecting the machine.   The tape applicator according to claim 2 or 3, wherein the air outlet is provided at a position where the air blown out from the air outlet does not directly hit the supply reel held by the cover member.

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