JP5100496B2 - Adhesive transfer device - Google Patents

Description

  The present invention relates to a pressure-sensitive adhesive transfer device for supplying pressure-sensitive adhesive such as flux, solder paste, and conductive adhesive to transfer pressure-sensitive adhesive to an electronic component in a component mounting apparatus.

  When mounting an electronic component on a substrate, the adhesive, such as flux, solder paste, or conductive adhesive, is often transferred to the electronic component and then mounted on the substrate. For example, when an electronic component having solder bumps is mounted on a substrate, the paste-like flux is generally transferred to the bumps of the electronic component for the purpose of improving solder bondability before mounting. It has been broken.

  The transfer of the flux to the bumps of the electronic component is performed using a transfer device that supplies paste-like flux in the form of a film. Specifically, the bumps of the electronic component are brought into contact with the flux film supplied by the transfer device to transfer the flux.

  A transfer device for supplying an adhesive film is described in, for example, Patent Documents 1 and 2. In the transfer apparatuses described in Patent Documents 1 and 2, the transfer table and the squeegee unit reciprocate in the horizontal direction relatively, thereby forming an adhesive film on the transfer table. A squeegee unit composed of a film forming squeegee and a scraping squeegee swings (rotates) around the center point of each squeegee, and when the transfer table moves during the film forming process, When the transfer table moves in the scraping process, the squeegee rotates and descends, and when the transfer table moves, the scraping squeegee contacts the transfer table and forms a new adhesive film each time the transfer table reciprocates. be able to. The thickness of the adhesive film is determined according to the depth of the film formation recess of the transfer table or the height of the notch of the film formation squeegee lower end, and the film formation squeegee lower end and the transfer table upper surface during the film formation process. And a relatively moving adhesive layer, whereby an adhesive film having a predetermined thickness is supplied.

  A transfer device that supplies an adhesive film is also described in Patent Document 3, for example. The transfer device described in Patent Document 3 includes a transfer table and a squeegee unit including two film forming squeegees. The transfer table is moved horizontally relative to the squeegee unit and is adhered by a squeegee member. The adhesive is spread and an adhesive film is formed with a thickness corresponding to the height of the gap between the lower end of the squeegee member and the coating film forming surface of the transfer table. The two squeegees are arranged parallel to each other in a direction perpendicular to the moving direction of the transfer table, and each can move up and down independently. The height of the gap between the lower end of the squeegee member and the coating film forming surface of the transfer table. Can be adjusted. It is also possible to scrape the adhesive film after the transfer operation by sliding the transfer table by sliding the lower end of the squeegee on the coating surface.

  When forming the adhesive film, the height of the gap between the lower end of the squeegee member and the coating film forming surface of the transfer table is adjusted by a lifting mechanism so as to be a width corresponding to the thickness of the adhesive film to be formed. The pressure-sensitive adhesive film having a predetermined thickness is formed by adjusting. By changing the height of the gap by moving the position of the squeegee member up and down during the movement of the transfer table, adhesive films with different thicknesses can be applied to the transfer table on the coating surface of the transfer table. Can be formed.

  When scraping off the adhesive film after the transfer operation, the position of the squeegee member is lowered, and the lower end portion of the squeegee member is brought into sliding contact with the coating film forming surface. Then, by moving the transfer table in the direction opposite to that at the time of forming the adhesive film, the rough adhesive film after transfer can be collected.

  In addition, by controlling the lifting / lowering operation of the two squeegee members, it is possible to form the adhesive film and scrape the adhesive film after the transfer operation, regardless of the movement direction of the transfer table. .

JP 2004-330261 A JP 2007-250730 A JP 2007-305726 A

  In the mounting operation by the component mounting apparatus, different types of components may be mounted on the same substrate. If the type of component to be mounted is changed, the appropriate amount of adhesive (flux, solder paste, conductive adhesive, etc.) to be transferred is different. For this reason, it is preferable that the transfer device for supplying the pressure-sensitive adhesive film can simultaneously supply pressure-sensitive adhesive films having different thicknesses.

  However, in the transfer apparatuses described in Patent Documents 1 and 2, when the pressure-sensitive adhesive film is formed, the lower end portion of the squeegee member is brought into sliding contact with the upper surface of the transfer table. Therefore, the height of the squeegee member when forming the pressure-sensitive adhesive film. The position is fixed. For this reason, the thickness of the pressure-sensitive adhesive film to be formed is determined by the depth of the concave portion of the transfer table or the height of the notch at the lower end of the film forming squeegee with reference to the sliding contact portion. Therefore, when changing the film thickness, it is necessary to replace it with a transfer table having a different recess depth or a film forming squeegee having a different notch height, parts need to be replaced, and adhesives of any arbitrary thickness The film cannot be supplied at the same time, and there is a limitation in dealing with electronic parts having different sizes.

  On the other hand, the transfer device described in Patent Document 3 does not require replacement of parts when changing the film thickness.

  However, in the transfer device described in Patent Document 3, in the scraping operation, the lower end of the squeegee is brought into sliding contact with the coating film forming surface and the adhesive on the coating film forming surface is collected. It must be in contact with the coating surface over its entire length and must be linear. For this reason, an adhesive film having the same thickness can only be formed in the direction perpendicular to the moving direction of the transfer table.

  When there are many types of parts to be mounted, it is necessary to prepare an adhesive film having a thickness corresponding to each of the parts. However, in the transfer device described in Patent Document 3, it is possible to change the film thickness in the moving direction of the transfer table. However, the number of types of the adhesive film that can be formed at the same time is reduced. In order to cope with many types of film thicknesses, it is necessary to prepare a plurality of transfer apparatuses. If a step is provided at the lower end of the squeegee, it is possible to form a different film thickness in a direction perpendicular to the moving direction of the transfer table. It becomes impossible to scrape off the pressure-sensitive adhesive on the coating surface at the step portion.

  In the transfer devices described in Patent Documents 1 to 3, the adhesive collected in the scraping process is always exposed to the outside air, and the adhesive is likely to deteriorate.

  This invention is made | formed in view of this problem, Comprising: It is 1st to provide the adhesive transfer apparatus which can change the thickness of the adhesive film to form, without replacing | exchanging components. Let it be an issue.

  It is a second object of the present invention to provide an adhesive transfer device that can change the thickness of the adhesive film not only in the transfer table movement direction but also in a direction perpendicular to the transfer table movement direction.

  Furthermore, a third problem is to provide an adhesive transfer device that can store the adhesive recovered in the scraping step in a sealed state.

Adhesive transfer equipment according to the present invention, the adhesive film is formed on the transfer surface by the adhesive storage portion for storing an adhesive and the transfer surface of the transfer plate is relatively moved horizontally while sliding In the pressure-sensitive adhesive transfer apparatus for transferring the pressure-sensitive adhesive to the transfer target by immersing the transfer target in the pressure-sensitive adhesive film, the pressure-sensitive adhesive container includes a pair of gates, and the pair of gates stores the pressure-sensitive adhesive. Are arranged symmetrically with respect to a central plane that bisects the transfer plate in the moving direction of the transfer plate, and further by rotating the gate around a horizontal rotation axis orthogonal to the transfer plate moving direction, A gap can be provided between the lower end portion and the transfer surface, an adhesive film having a thickness corresponding to the height of the gap can be formed , and the gate is a vertical surface parallel to the moving direction of the transfer plate And the divided gate is Each transfer plate can be moved and fixed in the moving direction, and even if the rotation angle around the rotation axis is the same, the gap between each lower end of the divided gate and the transfer surface varying the height a pressure-sensitive adhesive transfer apparatus according to claim Rukoto can, it is possible to solve the first and second problems.

Furthermore, it is preferable that the adhesive container is hermetically sealed when the lower end portions of the pair of gates are in contact with the transfer surface . In this case, the adhesive transfer device has the third problem. Can be solved.

According to the present invention, the adhesive container includes a pair of gates, and the pair of gates are arranged symmetrically with respect to the center plane that bisects the adhesive container in the moving direction of the transfer plate. An adhesive film can be formed in both directions in which the transfer plate moves. Further, a gap can be provided between the lower end portion and the transfer surface by rotating the gate about a horizontal rotation axis orthogonal to the moving direction of the transfer plate, and depending on the height of the gap. Even when the film thickness is changed, it is not necessary to replace the transfer table with a different recess depth or a film forming squeegee with a different notch height.
The gate is divided by a vertical plane parallel to the moving direction of the transfer plate, and the divided gates are moved and fixed in the moving direction of the transfer plate, respectively, so that the rotation angle around the rotation axis is the same. However, since the height of the gap between the lower end of each of the divided gates and the transfer surface can be made different, the thickness differs not only in the moving direction of the transfer plate but also in the direction perpendicular thereto. The pressure-sensitive adhesive film can be formed, and it is easy to cope with a plurality of electronic components having different pressure-sensitive adhesive transfer amounts.
In the case where the lower end of each of the pair of gates comes into contact with the transfer surface, and the adhesive accommodating portion is in a sealed state, the deterioration of the adhesive accommodated in the adhesive accommodating portion is suppressed. be able to.

  Further, when the height of the gap can be arbitrarily set by controlling the rotation angle of the gate around the rotation axis, an adhesive film having an arbitrary thickness can be formed. It is easy to deal with a plurality of electronic components having different transfer amounts of the agent.

  In addition, by changing the rotation angle of the gate around the rotation axis during the movement of the transfer plate so that adhesive films having different thicknesses in the movement direction of the transfer plate can be formed, It becomes easier to deal with a plurality of electronic components having different transfer amounts.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view showing an adhesive transfer device 10 according to an embodiment of the present invention, FIG. 2 is a side view seen from the II direction in FIG. 1, and FIG. 3 is from the III direction in FIG. FIG. 4 is a side view seen, and FIG. 4 is a sectional view taken along line IV-IV in FIG.

  The adhesive transfer device 10 includes a transfer device frame 12, a transfer plate drive unit 14, a transfer plate 16, an adhesive storage unit 18, a gate drive unit 20, and a gate angle detection unit 22.

  The transfer device frame 12 includes a bottom plate 12A and side support members 12B. The bottom plate 12A is a base of the adhesive transfer device 10, and a transfer plate driving unit 14 is installed on the upper surface thereof. The side support member 12B is a plate-like member, and has a lower end portion that is connected and fixed to the bottom plate 12A, and motors 50A and 50B and angle detectors 60A and 60B, which will be described later, are attached to the outer surface. These are the bearings for bracket shafts 42 and 44 which will be described later.

  The transfer plate driving unit 14 has a role of driving the transfer plate 16 in the horizontal direction (X direction in FIGS. 1 and 2). The transfer plate drive unit 14 includes a transfer plate drive belt 14 </ b> A, a transfer plate drive motor 14 </ b> B, a drive pulley 14 </ b> C, and a pulley 14 </ b> D, and is installed on the upper surface of the bottom plate 12 </ b> A of the transfer device frame 12.

  The transfer plate 16 is a plate-like body that forms an adhesive film on the transfer surface 16A that is the upper surface thereof. The transfer plate 16 is fixed on the transfer plate moving belt 14A of the transfer plate driving unit 14 via a connecting portion 16B provided on the lower surface thereof, and is driven by the transfer plate driving unit 14 to move in the horizontal direction. As a result, an adhesive film is formed on the transfer surface 16A. A transfer plate groove 16 </ b> C for collecting the leaked adhesive is provided at the edge of the transfer surface 16 </ b> A on the upper surface of the transfer plate 16.

  The adhesive container 18 includes a pair of opposing side walls 30, an upper surface member 32, a right gate 34, a left gate 36, a right gate bracket 38, a left gate bracket 40, and a right gate bracket shaft (rotating shaft). 42 and a left gate bracket shaft (rotating shaft) 44, and the adhesive 1 is accommodated in an internal space 46 formed by these components.

  As will be described later, the right gate 34 and the left gate 36 rotate around the bracket shafts (rotating shafts) 42 and 44. At this time, both side surfaces of the right gate 34 and the left gate 36 are connected to the inner surface of the side wall 30. It comes to slide. As shown in FIG. 4, when the rotation angle of the right gate 34 (first right gate 34A and second right gate 34B) and left gate 36 (first left gate 36A and second left gate 36B) becomes zero, The lower ends of the walls 34A1, 34B1, 36A1, and 36B1 abut against the transfer surface 16A of the transfer plate 16, and the gap between the lower ends of the walls 34A1, 34B1, 36A1, and 36B1 and the transfer surface 16A is eliminated. The upper surface of the tip part of the ceiling part 34A2, 34B2, 36A2, 36B2 abuts the lower surface of the upper surface member 32, and the gap between the upper surface of the tip part of the ceiling part 34A2, 34B2, 36A2, 36B2 and the lower surface of the upper surface member 32 And the internal space 46 of the pressure-sensitive adhesive container 18 is sealed.

  When the adhesive transfer operation is not performed, the rotation angle of the right gate 34 and the left gate 36 is zero, the internal space 46 of the adhesive accommodating portion 18 is a rectangular parallelepiped sealed space, and the adhesive 1 It is accommodated in the sealed space, and the deterioration of the adhesive 1 is prevented.

  The central portion of the side wall 30 on which the upper surface member 32 is placed protrudes upward only in the region where the upper surface member 32 is placed, and the amount of protrusion is the ceiling portions 34A2, 34B2, 36A2 of the right gate 34 and the left gate 36. , About half of the height of 36B2. By making the side wall 30 into such a shape, the right gate bracket 38 and the left gate bracket 40 can smoothly rotate around the bracket shafts 42 and 44 without hitting the side wall 30.

  The right gate 34 is divided into two equal parts on a vertical plane parallel to the moving direction of the transfer plate 16, and is divided into a first right gate 34A and a second right gate 34B. The first right gate 34A is a member having a wall portion 34A1 and a ceiling portion 34A2 and having an L-shaped cross section. Similarly, the second right gate 34B is composed of a wall portion 34B1 and a ceiling portion 34B2, and is a member having an L-shaped cross section. Adjacent side surfaces of the first right gate 34A and the second right gate 34B can slide while being in close contact with each other.

  Like the right gate 34, the left gate 36 is divided into two equal parts by a vertical plane parallel to the moving direction of the transfer plate 16, and is divided into a first left gate 36A and a second left gate 36B. The first left gate 36A is a member having a wall portion 36A1 and a ceiling portion 36A2, and having an L-shaped cross section. Similarly, the second left gate 36B is composed of a wall portion 36B1 and a ceiling portion 36B2, and is a member having an L-shaped cross section. Adjacent both side surfaces of the first left gate 36A and the second left gate 36B can slide while being in close contact with each other. The left gate 36 is disposed symmetrically with the right gate 34.

  As will be described later, the right gate 34 (the first right gate 34A and the second right gate 34B) is fixedly attached to the right gate bracket 38 and rotates about the right gate bracket shaft 42, so that the wall portions 34A1 and 34B1 A predetermined gap is provided between the lower end portion and the transfer surface 16 </ b> A of the transfer plate 16. When the transfer plate 16 moves to the right with the gap provided, an adhesive film 2A (see FIG. 9) having a thickness corresponding to the height of the gap is formed on the transfer surface 16A of the transfer plate 16. The

  Similarly, the left gate 36 (the first left gate 36A and the second left gate 36B) is attached and fixed to the left gate bracket 40 and rotates about the left gate bracket shaft 44, as will be described later, and the wall portion 36A1. A predetermined gap is provided between the lower end of 36B1 and the transfer surface 16A of the transfer plate 16. When the transfer plate 16 moves leftward with the gap provided, an adhesive film 2C (see FIG. 10) having a thickness corresponding to the height of the gap is formed on the transfer surface 16A of the transfer plate 16. The

  The right gate bracket 38 has the lower surface thereof connected and fixed to the ceiling 34A2 of the right gate 34 (first right gate 34A, second right gate 34B), and the right gate 34 about the right gate bracket axis (rotating shaft) 42. Has a role to rotate. As shown in FIGS. 2 to 4, a lower protrusion 38 </ b> A protruding downward is provided at both ends of the right gate bracket 38, and a right gate bracket shaft (rotating shaft) is provided near the tip of the lower protrusion 38 </ b> A. ) 42 is fixedly attached. The pair of right gate bracket shafts 42 are inserted into through holes (bearings) of the side support members 12B and are rotatably supported, and the right gate bracket 38 rotates about the pair of right gate bracket shafts 42. It is like that. A worm wheel 56A is attached and fixed to one end of the pair of right gate bracket shafts 42. As will be described later, the worm wheel 56 </ b> A rotates by being supplied with a rotational driving force from the gate driving unit 20, rotates the right gate bracket shaft 42, and rotates the right gate 34 around the right gate bracket shaft 42. A bracket shaft gear 68A is attached and fixed to the other tip of the pair of right gate bracket shafts 42. As will be described later, the bracket shaft gear 68A is engaged with an angle detector gear 64A attached to and fixed to the tip of the rotation shaft 62A of the angle detector 60A, and the bracket around the right gate bracket shaft 42 of the right gate 34 is engaged. The rotation angle is transmitted to the angle detector 60A.

  Similarly, the left gate bracket 40 has a ceiling portion 36A2, 36B2 of the left gate 36 (first left gate 36A, second left gate 36B) connected and fixed to the lower surface thereof, and the left gate bracket shaft (rotating shaft) 44 is fixed. It has the role of rotating the left gate 36 as a center. As shown in FIGS. 2 to 4, a lower protrusion 40 </ b> A that protrudes downward is provided at both ends of the left gate bracket 40, and a left gate bracket shaft (rotating shaft) is provided near the tip of the downward protrusion 40 </ b> A. ) 44 is fixedly attached. The pair of left gate bracket shafts 44 are inserted into through holes (bearings) of the side support members 12B and are rotatably supported. The left gate bracket 40 rotates about the pair of left gate bracket shafts 44. It is like that. A worm wheel 56B is attached and fixed to one end of the pair of left gate bracket shafts 44. As will be described later, the worm wheel 56 </ b> B is rotated by being supplied with a rotational driving force from the gate driving unit 20, rotates the left gate bracket shaft 44, and rotates the left gate 36 around the left gate bracket shaft 44. A bracket shaft gear 68B is attached and fixed to the other tip of the pair of left gate bracket shafts 44. As will be described later, the bracket shaft gear 68B is engaged with an angle detector gear (not shown) attached and fixed to the tip of the rotation shaft 62B of the angle detector 60B, and the left gate bracket of the left gate 36 is engaged. The rotation angle around the shaft 44 is transmitted to the angle detector 60B.

  The right gate bracket 38 has mounting projections 38B and 38C projecting in a direction orthogonal to the downward projection 38A (projecting in the horizontal direction at a rotation angle of zero) from the both ends, respectively. It is provided at about 1 position. Slots 38B1 and 38C1 are provided in the mounting protrusions 38B and 38C. Screws 38B2 and 38C2 that pass through the long holes 38B1 and 38C1 are screwed into screw holes (not shown) provided on the upper surfaces of the ceiling portions 34A1 and 34B1 of the first right gate 34A and the second right gate 34B, respectively. Thus, the first right gate 34A and the second right gate 34B are attached and fixed to the lower surface of the right gate bracket 38.

  Similarly, the left gate bracket 40 has mounting protrusions 40B and 40C that protrude in a direction orthogonal to the downward protrusion 40A at positions that are about one third of the length from both ends. The mounting protrusions 40B and 40C are provided with long holes 40B1 and 40C1. Screws 40B2 and 40C2 that pass through the long holes 40B1 and 40C1 are screwed into screw holes (not shown) provided on the top surfaces of the ceiling portions 36A1 and 36B1 of the first left gate 36A and the second left gate 36B, respectively. Thus, the first left gate 36A and the second left gate 36B are attached and fixed to the lower surface of the left gate bracket 40.

  In this way, the right gate 34 (first right gate 34A, second right gate 34B) and left gate 36 (first left gate 36A, second left gate 36B) are attached to the right gate bracket 38 and the left gate bracket 40. When fixed, the right gate 34 and the left gate 36 can rotate about the bracket shafts (rotating shafts) 42 and 44, and the rotation angle between the lower ends of the gates 34 and 36 and the transfer surface 16A. The height of the gap can be set.

  Here, in the case of the right gate 34, the fixing positions of the first right gate 34A and the second right gate 34B are changed by changing the fixing positions of the screws 38B2 and 38C2 in the long holes 38B1 and 38C1. Can be shifted in the moving direction. As a result, as shown in FIG. 5B, even at the same rotation angle β, the lower ends of the wall portions 34A1 and 34B1 of the first right gate 34A and the second right gate 34B and the transfer plate 16 are transferred. The heights Z1 and Z2 of the gap between the surface 16A can be made different.

  Similarly, in the case of the left gate 36, the fixing positions of the first left gate 36A and the second left gate 36B are changed by changing the fixing positions of the screws 40B2 and 40C2 in the long holes 40B1 and 40C1. Can be shifted in the moving direction. Thereby, even at the same rotation angle, the height of the gap between the lower ends of the wall portions 36A1 and 36B1 of the first left gate 36A and the second left gate 36B and the transfer surface 16A of the transfer plate 16 is increased. Can be different.

  FIG. 5A shows a case where the fixed positions of the first right gate 34A and the second right gate 34B are aligned in the moving direction of the transfer plate 16, and the heights Z1 and Z2 of the gaps are the same. Become.

FIG. 5B shows a case in which the transfer plate 16 is moved differently. The fixed position of the second right gate 34B is shifted to the right by the shift amount d from the first right gate 34A. Even when rotated at the rotation angle β, the heights Z1 and Z2 of the generated gap are different from each other, and the height of the gap by the second right gate 34B is higher by the difference Y = Z2−Z1. Therefore, as shown in FIGS. 6A and 6B, the adhesive formed by the second right gate 34B rather than the adhesive film 2A (film thickness t _a ) formed by the first right gate 34A. The film 2B (film thickness t _b ) is thicker. On the other hand, when the first right gate 34A and the second right gate 34B are closed, the lower ends of the gates 34A and 34B return to the same height, so that the lower end and the transfer surface 16A are closed. It becomes a state.

  As described above, in the present embodiment, the fixing positions of the first right gate 34A and the second right gate 34B can be shifted in the moving direction of the transfer plate 16, so that the thickness of the adhesive film to be formed can be changed. The thickness of the pressure-sensitive adhesive film to be formed can be adjusted by adjusting the shift amount d. Similarly, the fixing positions of the first left gate 36A and the second left gate 36B can be shifted in the moving direction of the transfer plate 16, so that the thickness of the pressure-sensitive adhesive film to be formed can be changed in the moving direction of the transfer plate 16. The thickness of the pressure-sensitive adhesive film to be formed can be adjusted by adjusting the shift amount d.

  On the other hand, when the first right gate 34A and the second right gate 34B are closed, the lower ends of the gates 34A and 34B return to the same height, and the lower end and the transfer surface 16A are closed. When the first left gate 36A and the second left gate 36B are closed, the lower ends of the gates 36A and 36B return to the same height, so that the space between the lower end and the transfer surface 16A is closed. It becomes a state. For this reason, even if the fixing positions of the first right gate 34A and the second right gate 34B are shifted in the moving direction of the transfer plate 16, the fixing positions of the first left gate 36A and the second left gate 36B are set to the transfer plate 16. Even when shifted in the moving direction, when the gate 34 or 36 is closed, the lower end portion of the gate 34 or 36 and the transfer surface 16A are closed, so that the transfer plate 16 is opposite to the direction of film formation. The pressure-sensitive adhesive film on the transfer surface 16A can be recovered.

  Further, if the angle of the gate is changed during the movement of the transfer plate during the film forming operation, adhesive films having different thicknesses in the moving direction can be formed. 7A to 7C use the right gate 34 (the first right gate 34A and the second right gate 34B) divided into two, and the gate angle position is set once during the transfer plate 16 movement. It is sectional drawing which shows typically each step which is changing and performing film-forming operation | movement.

  First, as shown in FIG. 7A, the opening angle of the right gate 34 (the first right gate 34A and the second right gate 34B) is set to γ1, and the transfer plate 16 is moved in the direction of the arrow, thereby causing the adhesive films 2A1, 2B1. Next, as shown in FIG. 7B, once the movement of the transfer plate 16 is stopped, the opening angle of the right gate 34 (the first right gate 34A and the second right gate 34B) is increased. Change to γ2 (γ1 <γ2). Next, as shown in FIG. 7C, with the opening angle γ2 maintained, the transfer plate 16 is moved in the arrow direction to form the adhesive films 2A2 and 2B2. By doing in this way, as shown in FIG. 8, adhesive film 2A1, 2A2, 2B1, 2B2 of 4 types of thickness can be formed. Thereby, four types of adhesive films 2A1, 2A2, 2B1, and 2B2 having thicknesses corresponding to the four types of electronic components 5A, 5B, 5C, and 5D having different sizes can be provided.

  The gate drive unit 20 includes gate motors 50A and 50B, motor shafts 52A and 52B, worms 54A and 54B, and worm wheels 56A and 56B. The right gate 34 and the left gate 36 are It has a role of supplying a driving force that rotates about the gate bracket shaft 42 and the left gate bracket shaft 44 to the gates 34 and 36 of the adhesive accommodating portion 18. The gate motor 50A, the motor shaft 52A, the worm 54A, and the worm wheel 56A are parts for supplying a driving force for rotating the right gate 34. The gate motor 50B, the motor shaft 52B, the worm 54B, and the worm wheel 56B are connected to the left gate 36. It is a part which supplies the driving force which rotates. The gate motors 50A and 50B are attached and fixed to the outer surface of the side support member 12B, and the tip ends of the motor shafts 52A and 52B are rotatably attached to the lower surface of the ceiling protrusion 12B1 of the side support member 12B. Yes.

  Worms 54A and 54B are fixedly attached to the motor shafts 52A and 52B of the gate motors 50A and 50B. The worms 54A and 54B are engaged with the worm wheels 56A and 56B, and the rotational driving force of the gate motor 50A is transmitted to the right gate bracket shaft 42 via the motor shaft 52A, the worm 54A and the worm wheel 56A. The gate bracket shaft 42 rotates, and the rotational driving force of the gate motor 50B is transmitted to the left gate bracket shaft 44 via the motor shaft 52B, the worm 54B, and the worm wheel 56B, and the left gate bracket shaft 44 rotates.

  Along with the rotation of the right gate bracket shaft 42, the right gate bracket 38 and the right gate 34 fixed thereto are rotated, and a predetermined gap is formed between the lower end portion of the wall portion 34A of the right gate 34 and the transfer surface 16A of the transfer plate 16. A gap is provided, and with the rotation of the left gate bracket shaft 44, the left gate bracket 40 and the left gate 36 attached and fixed thereto rotate, and the lower end portion of the wall portion 36A of the left gate 36 and the transfer surface 16A of the transfer plate 16 A predetermined gap is provided between the two.

  The gate angle detector 22 includes angle detectors 60A and 60B, rotation shafts 62A and 62B, an angle detector gear 64A attached to and fixed to the tip, an angle detector gear (not shown), a support bracket 66A, 66B and bracket shaft gears 68A and 68B, and has a role of measuring the rotation angles of the right gate 34 and the left gate 36. The angle detector 60A, the rotation shaft 62A, the gear 64A, the support bracket 66A, and the bracket shaft gear 68A are parts for measuring the rotation angle of the right gate 34. The angle detector 60B, the rotation shaft 62B, and an angle (not shown) The detector gear, the support bracket 66B, and the bracket shaft gear 68B are parts for measuring the rotation angle of the left gate 36.

  The angle detectors 60A and 60B are attached and fixed to the outer surface of the side support member 12B via support brackets 66A and 66B. An angle detector gear 64A attached to the rotation shaft 62A of the angle detector 60A is engaged with a bracket shaft gear 68A fixed to the right gate bracket shaft 42. An angle detector gear (not shown) attached to the rotation shaft 62B of the angle detector 60B is engaged with a bracket shaft gear 68B fixed to the left gate bracket shaft 44. The angular position of the right gate 34 around the right gate bracket shaft 42 is transmitted to the angle detector 60A via the bracket shaft gear 68A, the angle detector gear 64A, and the rotating shaft 62A, and the angular position of the right gate 34 is detected. . The angular position of the left gate 36 around the left gate bracket shaft 44 is transmitted to the angle detector 60B via the bracket shaft gear 68B, the angle detector gear (not shown), and the rotating shaft 62B. Is detected. The measured angular position is sent to a gate control unit (not shown) and subjected to feedback control, so that the angular positions of the right gate 34 and the left gate 36 are accurately controlled.

  Next, the operation of the adhesive transfer device 10 according to this embodiment will be described.

  9A to 9C schematically illustrate each stage in which the operation of collecting the adhesive film 2A after the transfer operation is performed after the adhesive film 2A is formed by the right gate 34 and the transfer operation is performed. FIG. It is assumed that the first right gate 34A and the second right gate 34B are attached to the right gate bracket 38 without deviation (state of FIG. 5A), and in the description of FIGS. 9A to 9C. The first right gate 34A and the second right gate 34B will be described as the right gate 34 without making any distinction.

  Prior to the start of the transfer operation of the adhesive 1, the transfer plate 16 is waiting at the position shown in FIG. 9A. At this time, both the right gate 34 and the left gate 36 are closed. It is accommodated in the internal space 46 of the agent accommodating part 18 in a sealed state.

  When forming the film 2A of the adhesive 1 from the standby position (the state where the adhesive accommodating portion 18 is located at the right end of the transfer plate 16) in FIG. 9A (film forming operation), the right gate bracket shaft 42 is formed. The right gate 34 is rotated around the center, and the angle of the right gate 34 is held at a predetermined angle α1. This creates a gap S between the lower end of the right gate 34 and the transfer surface 16A of the transfer plate 16, as shown in FIG. 9B. When the transfer plate 16 moves in the direction of the arrow in FIG. 9B, an adhesive film 2A having a thickness t corresponding to the width of the gap S is formed on the transfer surface 16A. The thickness t of the adhesive film 2A is set according to the size of the bump 72A of the electronic component 72 to be transferred.

  When the film forming operation is completed and the transfer plate 16 is stopped, as shown in FIG. 9B, the electronic component 72 adsorbed by the nozzle 70 moves to the transfer position and descends to the transfer surface 16A. 1 is transferred to the bump 72A. When the transfer to the bumps 72A is performed, bump marks remain on the surface of the adhesive film 2A. Therefore, it is necessary to newly form an adhesive film for the next transfer operation. Therefore, with the left gate 36 closed, the transfer plate 16 is moved in the return direction (arrow direction in FIG. 9C), and the adhesive film 2A is accommodated in the adhesive as shown in FIG. 9C. It collects in the internal space 46 of the part 18. At this time, the right gate 34 rotates to an angle α2 (α2> α1) to further open the gap S so as not to hinder the recovery of the adhesive film 2A. Even if the transfer plate moves in the return direction (the arrow direction in FIG. 9C), the left gate 36 is closed, so that the adhesive film 2A is accommodated in the internal space 46 of the adhesive accommodating portion 18. When the transfer plate 16 moves to the position shown in FIG. 9A with the left gate 36 closed, and the right gate 34 is closed, the internal space 46 of the adhesive accommodating portion 18 is brought into an original sealed state.

  When the film 2C of the adhesive 1 is formed (film formation operation) from the standby position (the state where the adhesive accommodating portion 18 is located at the left end of the transfer plate 16) of FIG. As shown in FIG. 10, the left gate 36 is rotated around the left gate bracket shaft 44, and the transfer plate 16 is moved in the direction of the arrow in FIG. 10B with the left gate 36 held at a predetermined angular position. Thereby, the adhesive film 2C is formed on the transfer surface 16A in the moving direction.

  Further, as shown in FIGS. 11A to 11D, if the angular position of the gate is controlled and the transfer plate 16 is reciprocated, new adhesive films may be alternately formed on the transfer surface 16A. it can.

  FIG. 11A shows a state in which the adhesive 1 is accommodated in the sealed internal space 46 of the adhesive accommodating portion 18. From the state of FIG. 11A, as shown in FIG. 11B, the transfer plate 16 is moved in the direction of the arrow with the rotation angle of the right gate 34 (first right gate 34A and second right gate 34B) as γ1. Thus, the pressure-sensitive adhesive films 2A1 and 2A2 are formed. Then, a transfer operation is performed on the formed adhesive films 2A1 and 2A2.

  Next, as shown in FIG. 11C, the rotation angle of the right gate 34 (the first right gate 34A and the second right gate 34B) is changed to γ2 larger than γ1, and the adhesive film 2A1 after transfer, 2A2 is easily collected, and the rotation angle of the left gate 36 (the first left gate 36A and the second left gate 36B) is γ3. Then, the transfer plate 16 is moved in the opposite direction to recover the adhesive films 2A1 and 2A2 after the transfer, and the adhesive films 2C1 and 2C2 are newly formed on the opposite side. Then, a transfer operation is performed on the formed adhesive films 2C1 and 2C2.

  Next, as shown in FIG. 11D, the rotation angle of the left gate 36 (the first left gate 36A and the second left gate 36B) is changed to γ4 larger than γ3, and the adhesive film 2C1 after transfer, 2C2 is easily collected, and the rotation angle of the right gate 34 (the first right gate 34A and the second right gate 34B) is γ1. Then, the transfer plate 16 is moved in the direction of the arrow, and the adhesive films 2A1 and 2A2 are formed again on the opposite side while collecting the adhesive films 2C1 and 2C2 after the transfer.

  As shown in FIGS. 11A to 11D, the gate angle is controlled, and the transfer plate 16 is reciprocated to alternately form a new adhesive film on the transfer surface 16A. A new pressure-sensitive adhesive film can be formed while collecting the pressure-sensitive adhesive film, and the pressure-sensitive adhesive film can be efficiently formed.

  As described above, the adhesive transfer device 10 according to the embodiment of the present invention has a structure in which the gates 34 and 36 are rotated and held at a predetermined angle to adjust the gap S with the transfer surface 16A. By setting the gates 34 and 36 at a rotation angle corresponding to the required film thickness, an adhesive film with an arbitrary thickness can be formed.

  In addition, by changing the rotation angle of the gates 34 and 36 during the movement of the transfer plate 16 for film formation, the thickness of the transfer plate 16 varies in the moving direction by one movement in one direction of the transfer plate 16. The pressure-sensitive adhesive film can be formed on the transfer surface 16A, and it is easy to deal with bumps of a plurality of electronic components having different sizes.

  In addition, since the gates 34 and 36 are rotated so that the gap S with the transfer surface 16A can be adjusted, the gates 34 and 36 are divided in the width direction, and the divided gates 34 and the divided gates 36 are transferred. By shifting and fixing each other in the moving direction of the plate 16, adhesive films having different thicknesses equal to the number of divisions can be formed in the gate width direction (perpendicular to the moving direction of the transfer plate 16). It is easy to deal with bumps of multiple electronic parts with different sizes.

  Further, the gates 34 and 36 are divided in the width direction, and the divided gates 34 and the divided gates 36 are attached to each other while being shifted in the moving direction of the transfer plate 16 and the transfer plate 16 for film formation. By changing the angular position of the gates 34 and 36 in the middle of the movement, a thick adhesive film can be formed on the transfer surface 16A by one movement in one direction of the transfer plate 16. It is possible to cope with bumps of a plurality of electronic components having different sizes.

  Further, even if the divided gates 34 and the divided gates 36 are shifted and attached to each other in the moving direction of the transfer plate 16 to form adhesive films having different thicknesses in the width direction, the gates 34, By returning the rotation angle of 36 to zero, in the scraping process, the lower ends of all the divided gates 34 and the lower ends of all the divided gates 36 are in contact with the transfer surface 16A. It can be reliably recovered.

  When the angular positions of the right gate 34 (the first right gate 34A and the second right gate 34B) and the left gate 36 (the first left gate 36A and the second left gate 36B) become zero, the wall portions 34A1, 34B1, The lower ends of 36A1 and 36B1 abut against the transfer surface 16A of the transfer plate 16, and there are no gaps between the lower ends of the walls 34A1, 34B1, 36A1, and 36B1 and the transfer surface 16A, and the ceiling portions 34A2, 34B2, The upper surfaces of the tip portions of 36A2 and 36B2 are in contact with the lower surface of the upper surface member 32, and there is no gap between the upper surface of the tip portions of the ceiling portions 34A2, 34B2, 36A2, and 36B2 and the lower surface of the upper surface member 32, and the adhesive container Since the internal space 46 of 18 is sealed, deterioration of the adhesive 1 accommodated in the adhesive accommodating part 18 is suppressed.

  In the adhesive transfer device 10 according to the embodiment of the present invention described above, the number of divisions of the gates 34 and 36 is 2, but the number of divisions of the gates 34 and 36 is not limited to 2, but 3 or more. Alternatively, if the number of divisions of the gates 34 and 36 is increased, adhesive films having different thicknesses can be formed in the width direction of the gates 34 and 36 (direction perpendicular to the moving direction of the transfer plate 16). Further, the number of times of changing the angular positions of the gates 34 and 36 is not limited to one, and may be two or more. If the number of times of changing the angular positions of the gates 34 and 36 is increased, adhesives having different thicknesses are used. Many films can be formed in the moving direction of the transfer plate 16.

The top view which shows the adhesive transfer apparatus of embodiment which concerns on this invention Side view seen from direction II in FIG. Side view seen from the III direction in FIG. IV-IV sectional view of FIG. In the adhesive transfer device, (A) an enlarged side view of the right gate when the fixed positions of the first right gate and the second right gate are aligned in the moving direction of the transfer plate, (B) the first right gate and the second gate Enlarged side view of the right gate when the fixed position of the right gate is varied depending on the transfer plate movement direction (A) Plan view when film formation is performed by shifting the fixed position of the second right gate to the right by the distance d from the first right gate, (B) Side view, (C) FIG. 6 (A) Sectional view of line CC Each stage where the film forming operation is performed by using the right-divided right gate (first right gate and second right gate) and changing the gate angle position once during the transfer plate movement is schematically shown. Cross section shown in Plan view of FIG. Sectional drawing which shows typically each step which is performing the operation | movement which collects the adhesive film after a transfer operation, after forming an adhesive film with a right gate and performing a transfer operation Sectional drawing which shows typically each step which forms the film | membrane of an adhesive (film-forming operation | movement) from a standby position (state in which the adhesive accommodating part is located in the left end of a transfer board) By controlling the gate angle and reciprocating the transfer plate to alternately form a new adhesive film on the transfer surface, the adhesive film is formed while collecting the transferred adhesive film. Sectional view schematically showing each stage

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Adhesive 2A, 2B, 2C, 2A1, 2A2, 2B1, 2B2, 2C1, 2C2 ... Adhesive film 5A, 5B, 5C, 5D ... Electronic component 10 ... Adhesive transfer device 12 ... Transfer device frame 12A ... Bottom plate 12B ... Side support member 12B1 ... Ceiling protrusion 14 ... Transfer plate drive unit 14A ... Transfer plate drive belt 14B ... Transfer plate drive motor 14C ... Drive pulley 14D ... Pulley 16 ... Transfer plate 16A ... Transfer surface 16B ... Link 16C ... Transfer Plate groove 18 ... Adhesive accommodating part 20 ... Gate drive part 22 ... Gate angle detection part 30 ... Side wall 32 ... Upper surface member 34 ... Right gate (gate)
34A ... 1st right gate 34B ... 2nd right gate 34A1, 34B1 ... Wall part 34A2, 34B2 ... Ceiling part 36 ... Left gate (gate)
36A ... 1st left gate 36B ... 2nd left gate 36A1, 36B1 ... Wall part 36A2, 36B2 ... Ceiling part 38 ... Right gate bracket 38A ... Downward protrusion part 38B, 38C ... Protrusion part 38B1, 38C1 ... Long hole 38C1, 38C2 ... Screw 40 ... Left gate bracket 40A ... Downward projecting portion 40B, 40C ... Projecting portion 40B1, 40C1 ... Long hole 40B2, 40C2 ... Screw 42 ... Right gate bracket shaft 44 ... Left gate bracket shaft 46 ... Internal space 50A, 50B ... Gate motor 52A, 52B ... Motor shaft 54A, 54B ... Worm 56A, 56B ... Worm wheel 60A, 60B ... Angle detector 62A, 62B ... Rotating shaft 64A ... Angle detector gear 66A, 66B ... Support bracket 68A, 68B ... Bracket shaft gear 70 ... Nozzle 72 ... Electronic components 7 2A ... bump d ... shift amount S ... gaps t, t _a, t _b ... thickness Y ... difference Z1, Z2 ... height of the gap α1, α2, β, γ1, γ2, γ3, γ4 ... rotation angle

Claims (2)

A pressure sensitive adhesive film is formed on the transfer surface by relatively moving horizontally while the pressure sensitive adhesive container containing the pressure sensitive adhesive and the transfer surface of the transfer plate are in sliding contact with each other, and the transfer object is immersed in the pressure sensitive adhesive film. In the adhesive transfer device for transferring the adhesive to the transfer object,
The pressure-sensitive adhesive accommodating portion includes a pair of gates, and the pair of gates are arranged symmetrically with respect to a central plane that bisects the pressure-sensitive adhesive accommodating portion in the moving direction of the transfer plate. By rotating about a horizontal axis of rotation perpendicular to the transfer plate's moving direction, a gap can be provided between the lower end of the transfer plate and the transfer surface, and the adhesive has a thickness corresponding to the height of the gap. Agent film can be formed ,
Further, the gate is divided by a vertical plane parallel to the moving direction of the transfer plate, and the divided gates can be fixed by moving in the moving direction of the transfer plate, respectively. even angles are the same, divided adhesive transfer apparatus according to claim Rukoto can be made different heights of the gaps between the respective lower end portions and the transfer surface of the gate. Each By lower end abuts against the transfer surface, adhesive transfer apparatus according to claim 1, characterized in Rukoto such a state that the adhesive containing portion is sealed in the pair of gate.

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