JP6326626B2 - ACF sticking device - Google Patents

Description

  The present invention relates to an ACF attaching apparatus for attaching an ACF tape to a substrate.

  In a production line for a substrate such as a liquid crystal panel substrate, an anisotropic called ACF (Anisotropic Conductive Film) is used as a pre-process of a component mounting process for mounting an electronic component on each of a plurality of electrode portions provided on an end of the substrate. An ACF sticking step of sticking a conductive film tape (ACF tape) to each electrode portion is executed. An ACF adhering apparatus that executes such an ACF adhering step includes a tape supply unit that supplies an ACF tape in a horizontal position to an upper position of a substrate, a lowering of the ACF tape from an upper position of the ACF tape, and pressing the ACF tape to the substrate. And a crimping tool for crimping to the head.

  In the ACF adhering apparatus, when a protective member is interposed between the lower surface of the crimping tool and the ACF tape, the ACF tape sticks to the lower surface of the crimping tool when the crimping tool presses the ACF tape against the substrate. (For example, refer to Patent Document 1).

JP 2009-16523 A

  Various methods for interposing the protective member between the lower surface of the crimping tool and the ACF tape have been proposed, but from the viewpoint of cost and structure simplification, the protective member is fixed in a state where the protective member is in close contact with the lower surface of the crimping tool. A structure to be held has been proposed. However, in such a structure, the protective member is displaced in the width direction, for example, with respect to the lower surface of the crimping tool while the crimping tool repeats the pressing operation of the ACF tape. There may be a problem that an unprotected region is formed, or a portion of the protective member that protrudes from the crimping tool protrudes to the substrate side, and the ACF tape sticking operation cannot be performed satisfactorily. Further, there is a problem that dust or the like easily adheres to a portion of the protective member that protrudes from the lower surface of the crimping tool, and the electronic component or the substrate is easily soiled. These problems are conspicuous in the situation where electronic parts are miniaturized as in recent years, and an immediate solution has been desired.

  In view of the above, an object of the present invention is to provide an ACF adhering device that can prevent the occurrence of a problem due to the displacement of the protective member with respect to the crimping tool and execute a good ACF adhering operation.

The ACF sticking apparatus of the present invention includes a tape supply unit that supplies a horizontal ACF tape to an upper position of a substrate, and descends from the upper position of the ACF tape to push down the ACF tape, and the ACF tape is pressure-bonded to the substrate. A crimping tool, a protective member that extends along a longitudinal direction of the crimping tool and is in close contact with the lower surface of the crimping tool, and a portion of the protective member that is in close contact with the lower surface of the crimping tool is separated from the lower surface of the crimping tool. Separating means, and the separating means has a roller mechanism for moving a roller member between the lower surface of the crimping tool and the protective member in the longitudinal direction of the crimping tool .

  If the ACF sticking device of the present invention is used, it is possible to prevent a problem due to the displacement of the protective member with respect to the crimping tool and execute a good ACF sticking operation.

The perspective view of the ACF sticking device in a 1st embodiment of the present invention. The perspective view of the crimping | compression-bonding part with which the ACF sticking apparatus in 1st Embodiment of this invention is provided. (A) Front view (b) Side view of crimping part with which ACF sticking device in 1st Embodiment of this invention is provided. The block diagram which shows the control system of the ACF sticking apparatus in 1st Embodiment of this invention. (A) (b) (c) Operation | movement explanatory drawing of the ACF sticking apparatus in 1st Embodiment of this invention. (A) (b) The figure which shows the shift | offset | difference state of the protective tape in the ACF sticking apparatus in 1st Embodiment of this invention. (A) (b) Explanatory drawing of the elimination operation | movement of the shift | offset | difference of the protective tape which the ACF sticking apparatus in 1st Embodiment of this invention performs. (A) (b) Explanatory drawing of the elimination operation | movement of the shift | offset | difference of the protective tape which the ACF sticking apparatus in 1st Embodiment of this invention performs. The perspective view of the crimping | compression-bonding part with which the ACF sticking apparatus in 2nd Embodiment of this invention is provided. (A) Front view (b) Side view of crimping part with which ACF sticking apparatus in 2nd Embodiment of this invention is provided. The fragmentary perspective view of the crimping | compression-bonding part with which the ACF sticking apparatus in 2nd Embodiment of this invention is provided. (A) (b) (c) (d) Explanatory drawing of the elimination operation | movement of the shift | offset | difference of the protective tape which the ACF sticking apparatus in 2nd Embodiment of this invention performs.

(First embodiment)
First, a first embodiment of the present invention will be described. The ACF sticking device 1 shown in FIG. 1 constitutes a liquid crystal panel production line together with an electrode cleaning device disposed on the upstream process side, a temporary pressure bonding device, a main pressure bonding device and the like disposed on the downstream process side. The ACF sticking device 1 receives a substrate 2 as a liquid crystal panel substrate from a device on the upstream process side such as an electrode cleaning device in the liquid crystal panel production line, and a plurality of electrodes provided on the edge of the upper surface of the substrate 2 After a predetermined length of ACF tape 3 made of an anisotropic conductive film is attached to each of the portions 2a, the substrate 2 is transferred to a downstream process side device such as a temporary pressure bonding device.

  In FIG. 1, an ACF sticking apparatus 1 includes a substrate holding / moving unit 12 that holds a substrate 2 on a base 11, a crimping unit 13 that crimps an ACF tape 3 onto a substrate 2 held by the substrate holding / moving unit 12, and a crimping unit. 13 has a backup stage 14 for receiving the lower surface of the substrate 2 when the ACF tape 3 is pressure-bonded to the substrate 2 by 13. Hereinafter, for convenience of explanation, the left-right direction viewed from the operator OP is defined as the X-axis direction, the front-rear direction viewed from the operator OP is defined as the Y-axis direction, and the up-down direction is defined as the Z-axis direction.

  The substrate holding / moving unit 12 includes a substrate holding table 12a that supports the substrate 2 from below and a table moving mechanism 12b of an orthogonal coordinate robot type that moves the substrate holding table 12a. At the rear of the base 11, there is provided a gate-shaped frame 15 composed of a horizontal beam 15a extending in the X-axis direction and left and right support columns 15b supporting both ends thereof. The crimping unit 13 is attached to the transverse beam 15 a of the frame 15. The backup stage 14 is provided below the pressure bonding unit 13 in a state extending in the X-axis direction.

  In FIG. 1, the crimping unit 13 is a base plate 21 fixed to the lateral beam 15 a of the frame 15, and a tape that is provided on the front surface of the base plate 21 (the surface facing the operator OP) to supply the ACF tape 3. A supply unit 22 and a crimping unit 23 that crimps the ACF tape 3 supplied by the tape supply unit 22 to the electrode unit 2 a of the substrate 2 are provided. The tape supply unit 22 includes a feeding unit 22a, a collection unit 22b, a plurality of guide rollers 22c, and a cutting unit 22d.

  As shown in the enlarged view in FIG. 1, the ACF tape 3 is cut out by the cutting unit 22 d from the tape member Tp conveyed by the tape supply unit 22. The tape member Tp has a base portion BT and an ACF portion 3B attached to the base portion BT. The tape member Tp is fed from the feeding portion 22a of the tape supply portion 22 and collected by the collecting portion 22b. The tape member Tp is guided by the guide roller 22c, and is in a horizontal posture near the lower end of the base plate 21 (a position below a crimping tool described later). The cutting part 22d operates in a direction orthogonal to the direction in which the tape member Tp extends before the tape member Tp is set to the horizontal posture to cut the ACF part 3B on the base part BT (arrow A). An ACF tape 3 having a fixed length L is formed on the BT. Therefore, the ACF tape 3 is supplied in a horizontal posture near the lower end of the base plate 21.

  As shown in FIGS. 2 and 3A and 3B, the crimping portion 23 includes a pair of upper and lower cylinder fixing members 31, a crimping tool drive cylinder 32, a crimping tool 33, a unit lifting cylinder 34, and protection. A member holding unit 35 and a protection member 36 are provided. The cylinder fixing member 31 is provided on the front surface of the base plate 21. The crimping tool drive cylinder 32 is fixed by a cylinder fixing member 31, and causes the piston rod 32a to protrude and retract along the vertical direction. The crimping tool 33 has a block shape, is connected to the lower end of the piston rod 32a, and extends in the X-axis direction. The unit elevating cylinder 34 is provided on the back side of the crimping tool 33 (the surface opposite to the side facing the operator OP), and projects and retracts the piston rod 34a along the vertical direction. The protection member holding unit 35 (protection member holding) is moved up and down with respect to the crimping tool 33 by the unit lifting cylinder 34. The protection member 36 has a tape shape and is held by the protection member holding unit 35. A slider holding member 37 having a vertical portion 37a extending in the vertical direction on the back side of the unit elevating cylinder 34 is attached to the crimping tool 33. On the back side of the vertical portion 37 a of the slider holding member 37, a slider 38 is provided that is slidable on a guide rail 21 a that extends vertically on the front surface of the base plate 21.

  When the crimping tool drive cylinder 32 projects and retracts the piston rod 32a along the vertical direction, the crimping tool 33 coupled to the piston rod 32a is moved together with the slider 38 coupled to the crimping tool 33 via the slider holding member 37. It moves up and down with respect to the base plate 21. Here, since the slider 38 is guided by the guide rail 21a attached to the base plate 21, the crimping tool 33 moves up and down along a stable track. When the unit elevating cylinder 34 projects and retracts the piston rod 34 a along the vertical direction, the protection member holding unit 35 connected to the piston rod 34 a moves up and down with respect to the crimping tool 33.

  2 and 3A and 3B, the protection member holding unit 35 includes an elevating plate 41, a locking tool 42, a guide roller 43, a spring 44, and a stopper 45. The elevating plate 41 is connected to the unit elevating cylinder 34, and elevates the back side of the crimping tool 33 by the unit elevating cylinder 34. The locking tool 42 is provided on the elevating plate 41 so as to be positioned on the left and right sides of the crimping tool 33. The locking tool 42 is allowed to move in the vertical direction with respect to the crimping tool 33. The guide rollers 43 are provided on the left and right sides of the crimping tool 33 and on the lower part of the front surface of the elevating plate 41 so as to be positioned below the locking tool 42. The spring 44 is provided between the elevating plate 41 and the left and right engaging members 42. The stopper 45 is provided on the left and right front surfaces of the elevating plate 41.

  In FIG. 2, locking grooves 42 a are provided at the lower ends of the left and right locking tools 42. Both ends of the protective member 36 are engaged with the left and right engaging grooves 42 a, are hung over the left and right guide rollers 43, and are in contact with the lower surface of the crimping tool 33. The left and right locking members 42 are pulled up with respect to the crimping tool 33 by springs 44, respectively, and the protection member 36 extends along the longitudinal direction (X-axis direction) of the crimping tool 33 and closely contacts the lower surface of the crimping tool 33. , Tension is applied. When the protective member 36 is not held in the locking groove 42a or when the tension of the protective member 36 is small, the left and right locking tools 42 abut against the stopper 45 from below while being pulled up by the spring 44, The upward movement with respect to the crimping tool 33 is restricted.

  In FIG. 4, the movement operation of the substrate holding table 12a is performed when the control device 50 provided in the ACF sticking device 1 controls the operation of the table moving mechanism 12b. The transporting operation of the tape member Tp and the cutting operation of the ACF tape 3 from the tape member Tp are performed by the control device 50 controlling the operation of the tape supply unit 22. The lifting / lowering operation of the crimping tool 33 relative to the base plate 21 is performed by the control device 50 controlling the operation of the crimping tool drive cylinder 32. The lifting / lowering operation of the protection member holding unit 35 relative to the crimping tool 33 is controlled by the control device 50. This is done by performing the operation control 34. The control device 50 operates the above-described units (the table moving mechanism 12b, the tape supply unit 22, the crimping tool drive cylinder 32, and the unit lifting cylinder 34) based on a predetermined execution program.

  In the ACF sticking apparatus 1 having such a configuration, when sticking the ACF tape 3 to each of the plurality of electrode portions 2 a on the substrate 2, first, the table holding mechanism 12 b holds the substrate holding table 12 a holding the substrate 2. The substrate 2 is positioned by moving it in the horizontal direction (substrate positioning step). Specifically, among the plurality of electrode portions 2a on the substrate 2, the electrode portion 2a to which the ACF tape 3 is to be attached is positioned below the crimping tool 33, and the substrate 2 directly below the electrode portion 2a is placed. The lower surface is supported by the backup stage 14.

  In parallel with the positioning of the substrate 2, the tape supply unit 22 transports the tape member Tp and supplies the horizontal ACF tape to the upper position of the substrate 2 (tape supply process). Specifically, the tape supply unit 22 cuts the ACF tape 3 from the tape member Tp by the cutting unit 22d while transporting the tape member Tp by the feeding unit 22a and the collection unit 22b, and thereby arranged on the base unit BT. Of the plurality of ACF tapes 3, the ACF tape 3 positioned at the leading portion in the direction of travel of the base portion BT is positioned below the crimping tool 33 (on the substrate 2, the position above the electrode portion 2 a to which the ACF tape 3 is to be applied. ).

  When the ACF tape 3 is positioned above the substrate 2, the crimping tool drive cylinder 32 lowers the crimping tool 33 from the initial position (FIG. 5A) to the crimping position (FIG. 5B) (FIG. 5B). ) Arrow B1) shown in the figure. As a result, the crimping tool 33 descends from the upper position of the ACF tape 3, pushes down the ACF tape 3 together with the base portion BT, presses it against the substrate 2, and crimps the ACF tape 3 to the electrode portion 2 a on the substrate 2 ( FIG. 5B). Crimping process). When the ACF tape 3 is crimped to the electrode portion 2a on the substrate 2 by the crimping tool 33, the crimping tool drive cylinder 32 raises the crimping tool 33 (arrow B2 shown in FIG. 5C). Thereby, the sticking operation of the ACF tape 3 for one electrode portion 2a is completed.

  When the operation of applying the ACF tape 3 for one electrode portion 2a is completed, the table moving mechanism 12b moves the substrate holding table 12a so that the substrate 2 slides in the X-axis direction, and then applies the ACF tape 3 The substrate positioning step is performed so that the electrode portion 2a to be positioned is located below the crimping tool 33. And the tape supply process and the crimping | compression-bonding process are performed similarly. When the ACF tape 3 is applied to all the electrode portions 2a to be applied with the ACF tape 3 on the substrate 2 by repeating such an example of operation, the table moving mechanism 12b moves the substrate holding table 12a. Then, the substrate 2 is carried out to the downstream process side (for example, a temporary pressure bonding apparatus for temporarily pressure bonding an electronic component to the ACF tape 3 attached to the substrate 2).

  In this way, the ACF sticking apparatus 1 presses the ACF tape 3 against the electrode portion 2 a of the substrate 2. While the ACF tape 3 is repeatedly pressed, the protective member 36 is placed on the lower surface of the pressing tool 33. On the other hand, a region 33m that is not protected by the protective member 36 is formed on the lower surface of the crimping tool 33 (FIG. 6 (a)), or the protective member 36 protrudes from the crimping tool 33. The protruding portion 36m protrudes to the substrate 2 side (FIG. 6 (b)), and there is a risk that the ACF tape attaching operation cannot be performed satisfactorily. For this reason, every time the crimping tool drive cylinder 32 performs the crimping operation of the ACF tape 3 a predetermined number of times or for a certain period, the portion of the protective member 36 that is in close contact with the lower surface of the crimping tool 33 is temporarily (from the lower surface of the crimping tool 33). A separation operation for separating the protective member 36 from the lower surface of the crimping tool 33 is performed by performing a separation operation for separation.

  The separation operation is performed by the unit elevating cylinder 34 moving the protection member holding unit 35 holding the protection member 36 up and down with respect to the crimping tool 33. At this time, the unit elevating cylinder 34 lowers the protection member holding unit 35 until the lower edges of the left and right guide rollers 43 provided in the protection member holding unit 35 are positioned below the lower surface of the crimping tool 33 (FIG. 7). (A)-> Drawing 7 (b) Arrow C1 shown in Drawing 7 (b)). As a result, the portion of the protective member 36 that is in close contact with the lower surface of the crimping tool 33 is pulled away from the lower surface of the crimping tool 33 and separated (FIGS. 7B and 8A). Then, when the protective member holding unit 35 is raised to the original position by the unit elevating cylinder 34 (arrow C2 shown in FIG. 8B), the protective member 36 is eliminated from the lower surface of the crimping tool 33. The normal state is restored (FIG. 8 (a) → FIG. 8 (b)).

  As described above, in the first embodiment, the unit elevating cylinder 34 as the protective member holding unit elevating mechanism for elevating the protective member holding unit 35 holding the protective member 36 relative to the pressure bonding tool 33 is bonded to the protective member 36. This is a separating means for separating the portion in close contact with the lower surface of the tool 33 from the lower surface of the crimping tool 33.

(Second Embodiment)
The ACF sticking device in the second embodiment is different from the ACF sticking device 1 in the first embodiment described above only in the configuration of the crimping portion 23. 9 and 10 (a) and 10 (b) show the crimping part 123 of the ACF sticking device in the second embodiment, and the same components as those of the crimping part 23 of the ACF sticking device 1 in the first embodiment will be described. The same reference numerals as in the case of the embodiment are given. In the crimping portion 123 of the second embodiment, the protective member holding unit 35 is coupled to the crimping tool 33 by a coupling member 134. Further, the crimping portion 123 includes a roller member 147 having a rotation axis oriented in the Y-axis direction, and a roller member moving mechanism 148 that moves the roller member 147 between the crimping tool 33 and the protection member 36 in the X-axis direction. Including a roller mechanism 149. In this embodiment, the roller mechanism 149 serves as a separating unit.

  In FIG. 11, a roller member moving mechanism 148 includes a stator 151a provided on the back side of the crimping tool 33 in the X-axis direction, and a movable element 151b movable in the X-axis direction along the stator 151a. The linear motor 151 and the roller member raising / lowering cylinder 152 attached to the mover 151b of the linear motor 151 are provided. The roller member elevating cylinder 152 projects and retracts the piston rod 152a along the vertical direction. A roller member 147 is rotatably provided at the lower end of the piston rod 152a via a pivot shaft 152b extending in the Y-axis direction.

  The roller member moving mechanism 148 combines the up-and-down movement (movement in the Z direction) by the roller member up-and-down cylinder 152 and the horizontal movement (movement in the X direction) of the roller member up-and-down cylinder 152 by the linear motor 151. The roller member 147 is moved in the XZ plane. The roller member 147 uses the side position of the left and right guide rollers 43 on the side of the pressure bonding tool 33 as a standby position. The roller member 147 is moved from one standby position to the other standby position by the roller member moving mechanism 148 so as to separate the portion of the protective member 36 in close contact with the lower surface of the crimping tool 33 from the lower surface of the crimping tool 33. .

  Specifically, in a state where the roller member 147 is in one of the standby positions, the roller member moving mechanism 148 first causes the linear rod 151 to project the piston rod 152a of the roller member elevating cylinder 152 downward, and the roller member elevating cylinder. 152 is moved to the other guide roller 43 side. As a result, the roller member 147 descends obliquely downward from the initial position toward the center side in the X-axis direction of the crimping tool 33 (arrow D1 shown in FIG. 12A), and the lower surface of the crimping tool 33, the protective member 36, and the like. (Fig. 12 (a)). When the roller member 147 reaches below the one end of the lower surface of the crimping tool 33, the roller member moving mechanism 148 moves the roller member elevating cylinder 152 in the X-axis direction by the linear motor 151 (FIG. 12 ( b) and an arrow D2) shown in FIG. As a result, the portion of the protective member 36 that is in close contact with the lower surface of the crimping tool 33 is separated from the lower surface of the crimping tool 33.

  When the roller member 147 reaches below the end opposite to the lower surface of the crimping tool 33 (FIG. 12C), the roller member moving mechanism 148 immerses the piston rod 152a of the roller member elevating cylinder 152 upward. Then, the roller member elevating cylinder 152 is moved to the other guide roller 43 side by the linear motor 151. Accordingly, the roller member 147 moves obliquely upward from the initial position in the direction stretched from the center side in the X-axis direction of the crimping tool 33 (arrow D3 shown in FIG. 12D), and reaches the other standby position. (FIG. 12 (d)). In this way, the portion of the protective member 36 that is in close contact with the lower surface of the crimping tool 33 is temporarily separated from the lower surface of the crimping tool 33, and as shown in FIGS. 6 (a) and 6 (b), the protective member Even when 36 is displaced from the lower surface of the crimping tool 33 (displacement has occurred), this is eliminated and the protection member 36 returns to its original position (position where no displacement has occurred). The roller member moving mechanism 148 moves the roller member 147 in the direction opposite to that described above when the next deviation eliminating step is executed.

  In the second embodiment, as shown in FIG. 11, a guide groove 147 g is formed on the outer peripheral surface of the roller member 147. As a result, the protection member 36 separated from the lower surface of the crimping tool 33 is guided by the guide groove 147g of the roller member 147 that moves below the lower surface of the crimping tool 33. Therefore, the displacement of the protective member 36 can be reliably eliminated. The roller member moving mechanism 148 of the roller mechanism 149 that is a separating means is not limited to the mechanism described in the present embodiment, and may move the roller member 147 so as to obtain the effects of the present invention. That's fine.

  As described above, the ACF attaching device 1 in the first embodiment and the second embodiment includes the separating unit that separates the protection member 36 from the lower surface of the crimping tool 33, and a deviation occurs with respect to the crimping tool 33. The protective member 36 can be returned to the original position. For this reason, if the ACF sticking apparatus 1 in this Embodiment is used, it will prevent the malfunction by the shift | offset | difference of the protection member 36 with respect to the crimping | compression-bonding tool 33, and a favorable ACF sticking operation | work can be performed. Further, such a separation work of the protection member 36 can be performed without stopping the operation of the ACF sticking apparatus 1 and without being manually performed by the operator OP, so that the workability of the ACF sticking apparatus 1 is lowered. There is nothing.

  Provided is an ACF sticking apparatus which can prevent a trouble caused by a displacement of a protective member with respect to a crimping tool and execute a good ACF sticking operation.

DESCRIPTION OF SYMBOLS 1 ACF sticking apparatus 2 Board | substrate 3 ACF tape 22 Tape supply part 33 Crimping tool 34 Unit raising / lowering cylinder (protection member holding part raising / lowering mechanism)
35 Protection member holding unit (protection member holding part)
36 Protective member 147 Roller member 147g Guide groove 149 Roller mechanism

Claims (3)

A tape supply unit for supplying a horizontal ACF tape to an upper position of the substrate;
A crimping tool that descends from an upper position of the ACF tape, presses down the ACF tape, and crimps the ACF tape to the substrate;
A protective member extending along the longitudinal direction of the crimping tool and closely contacting the lower surface of the crimping tool;
Separating means for separating the part of the protective member that is in close contact with the lower surface of the crimping tool from the lower surface of the crimping tool ;
The ACF adhering device , wherein the separating means includes a roller mechanism that moves a roller member between a lower surface of the crimping tool and the protective member to move in a longitudinal direction of the crimping tool .   The ACF sticking apparatus according to claim 1, wherein the separating unit includes a protection member holding part lifting mechanism that lifts and lowers a protection member holding part that holds the protection member with respect to the crimping tool. The roller member on the outer circumferential surface thereof, ACF attachment device according to claim 1 or 2, characterized in that it has a guide groove for guiding the protective member separated from the lower surface of the bonding tool.

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