JP4872634B2 - Adhesive applicator unit - Google Patents

Description

  The present invention relates to an adhesive applicator unit that applies an adhesive to a substrate conveyed by a substrate conveyance path.

Conventionally, in an electronic component mounting line, an adhesive is applied to the substrate before the electronic component is mounted on the substrate, so that the electronic component is firmly fixed to the substrate in the mounting process of the electronic component. The process is being performed. Such an adhesive application process includes a substrate transport path for transporting a substrate to a movable base, a moving mechanism for the coating head, and a moving mechanism that moves above the substrate transport path to be on the substrate transport path. This is performed by an adhesive application device dedicated to adhesive application that includes an application head that applies an adhesive to a positioned substrate (Patent Document 1).
Japanese Patent Publication No. 7-90193

  However, the application of the adhesive to the substrate in the electronic component mounting line is not necessarily performed with high accuracy, and it is performed with rough accuracy that it is sufficient to apply the adhesive to the approximate position on the substrate. In such a case, introducing a conventional dedicated adhesive application device into the mounting line increases the production cost.

  Accordingly, an object of the present invention is to provide an adhesive applicator unit that can apply an adhesive to a substrate with an inexpensive configuration.

The adhesive applicator unit according to claim 1 includes a base portion that is detachably attached to the two fixed-side members of the substrate transport path, a head moving mechanism provided in the base portion, and a base portion that is provided by the head moving mechanism. An application head for applying an adhesive to the substrate positioned on the substrate conveyance path, and the base portion is a pair of table support members that are detachably attached to the two fixed members. A fixed table that is stretched over the pair of table support members and extends in a direction orthogonal to the substrate transport direction of the substrate transport path, and the head moving mechanism extends on the fixed table in the substrate transport direction of the substrate transport path, A first moving table that moves along a fixed table, and a second moving table that moves on the first moving table along the first moving table and supports the coating head so as to be movable up and down. With.

The adhesive applicator unit according to claim 2 is the adhesive applicator unit according to claim 1, wherein the substrate is brought into contact with the substrate conveyed by the substrate conveyance path at the tip of the first moving table. Positioning means for positioning the substrate on the transport path is provided.

According to the present invention, a base portion which is detachably attached to the two fixing side member of the substrate transport path, and the head moving mechanism provided on the base portion, to move relative to the base part by the head moving mechanism substrate it is configured and coating head for applying adhesive to a substrate positioned on the transport path is as a unit, can be used only attaching the base portion to the fixed side member of the substrate transport path. Therefore, it is possible to apply the adhesive to the substrate with a structure that is much cheaper than conventional expensive dedicated products.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of an adhesive applicator unit according to an embodiment of the present invention, FIG. 2 is a side view of the adhesive applicator unit according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a control system diagram of the adhesive applicator unit according to the embodiment of the present invention, and FIG. 5 is a perspective view of the unit-side controller according to the embodiment of the present invention. It is.

  1, 2, and 3, the adhesive applicator unit 1 is configured to be detachably attached to an existing substrate transport path 3 that transports the substrate 2 in a certain direction. The substrate transport path 3 includes two fixed beams (fixed side members) 4a and 4b arranged in parallel to each other, a movable beam 4c provided therebetween, and one fixed beam 4a and one movable beam 4c facing each other. It consists of a pair of conveyors 5 provided on the side surfaces, and each conveyor 5 is driven in a certain direction (arrow A shown in FIG. 3) by a conveyor drive motor 5a controlled by a transport path side controller 6 (FIG. 4).

  The movable beam 4c is screwed with a width adjusting feed screw 7a provided orthogonal to the movable beam 4c at a nut portion (not shown), and when the width adjusting feed screw driving motor 7b is driven from the conveyance path side controller 6 (FIG. 4) The width adjusting feed screw 7a rotates to move the movable beam 4c in the width direction of the substrate transport path 3, and the width of the conveyor 5 (the interval between the two conveyors 5) changes. The width of the conveyor 5 is set according to the size of the substrate 2 to be conveyed.

  The adhesive applicator unit 1 includes a base unit 10 that is mounted across two conveyors 5 on two fixed beams 4 a and 4 b provided in the substrate transport path 3, a head moving mechanism 13 and a head moving mechanism provided in the base unit 10. 13 is provided with an application head 14 that moves above the conveyor 4 and applies an adhesive to the substrate 2 on the substrate conveyance path 3.

  The base portion 10 is spanned between a pair of table support members 11 detachably attached to the two fixed beams 4 a and 4 b of the substrate transport path 3, and the pair of table support members 11. It consists of a fixed table 12 that extends in a direction orthogonal to the direction of transport of the substrate 2 by the substrate transport path 3 while being attached to the two fixed beams 4a, 4b.

  The head moving mechanism 13 includes a first moving table 15 and a first moving table 15 side that are provided to extend above the fixed table 12 in a direction orthogonal to the fixed table 12 (that is, in the substrate transfer direction of the substrate transfer path 3). A second moving table 16 provided on the first side, a first moving table feed mechanism 17 that moves the first moving table 15 along the fixed table 12, and a second moving table 16 that moves along the first moving table 15. A two-moving table feed mechanism 18 is provided.

  The first moving table feed mechanism 17 extends in parallel with the fixed table 12 and is engaged with a nut portion (not shown) of the first moving table 15 and a first feed screw 17a that rotates the first feed screw 17a. It consists of a feed screw drive motor 17b. When the first feed screw drive motor 17b is driven from the unit-side controller 20 provided in the adhesive application unit 1 to rotate the first feed screw 17a (FIG. 4), the first moving table 15 moves on the fixed table 12 on the first side. It moves in the width direction of the substrate transport path 3 along the one feed screw 17a (that is, along the fixed table 12) (arrow B shown in FIG. 1).

The second moving table feed mechanism 18 extends in parallel with the first moving table 15, and rotates and drives the second feed screw 18 a that is screwed into a nut portion (not shown) of the second move table 16, and the second feed screw 18 a. It consists of a second feed screw drive motor 18b. When the second feed screw drive motor 18b is driven from the unit-side controller 20 to rotate the second feed screw 18a (FIG. 4).
), The second moving table 16 moves on the first moving table 15 along the second feed screw 18a (that is, along the first moving table 15) in the substrate transfer direction of the substrate transfer path 3 (in FIG. 1). Arrow C shown.

  The coating head 14 is supported by the second moving table 16 so as to be movable up and down, and has a nozzle 14a that protrudes downward and extends. When the application head raising / lowering motor 19a built in the application head 14 is driven from the unit-side controller 20 (FIG. 4), the application head 14 moves up and down with respect to the second moving table 16 (arrow D shown in FIG. 3). When the discharge actuator 19b built in the coating head 14 is driven from the unit-side controller 20 (FIG. 4), the adhesive is discharged downward from the tip (lower end) portion of the nozzle 14a.

  A plurality of fixing screw mounting holes 11 a are provided at the bottom of each table support member 11, and a T-shaped groove 8 opened upward is provided above the fixed beams 4 a and 4 b of the substrate transport path 3. Yes. A nut (not shown) is installed in the groove 8 of the fixed beams 4a and 4b, and a fixing screw 9 having a fixing screw mounting hole 11a of the table support member 11 inserted through the nut is screwed into the nut to support the table. The member 11 can be fixed to the fixed beams 4a and 4b. In the present embodiment, the substrate transport path 3 includes a movable beam 4c in addition to the two fixed beams 4a and 4b. Even in such a case, the table support member 11 has two fixed beams 4a. , 4b.

  When the pair of table support members 11 are attached to the two fixed beams 4a and 4b, the fixed table 12 extends above the substrate transport path 3 in a direction perpendicular to the substrate transport direction (width direction of the substrate transport path 3). The first moving table 15 is in a state of extending above the substrate transport path 3 in the substrate transport direction (direction in which the substrate transport path 3 extends).

  The unit side controller 20 is detachably attached to the side surface of the table support member 11 on one side. In FIG. 5, the unit-side controller 20 includes each actuator (first feed screw drive motor 17 b, second feed) provided in the adhesive applicator unit 1 in a housing 23 having a door 22 that can be opened and closed around a hinge 21. In addition to drive circuit boxes 24 and 25 that store drive circuits of a screw drive motor 18b, a coating head lifting motor 19a, a discharge actuator 19b, and the like, a power circuit box 26 that stores a power circuit and a storage circuit for a sequence program are stored. A storage circuit box 27 is provided. In the unit-side controller 20, the drive circuit boxes 24, 25 and the power supply circuit box 26 that generate a relatively large amount of heat are arranged above or to the side of the storage circuit box 27 that generates a relatively small amount of heat.

  Above these circuit boxes 24, 25, 26, 27, a touch panel 28 that also serves as a display is provided. By operating the touch panel 28, it is possible to perform necessary operations on the unit-side controller 20 such as inputting a sequence program. it can.

  In FIG. 5, a plurality of heat radiating holes 29 are provided in the back plate 23 a of the housing 23 that is a mounting surface of the unit-side controller 20 to the table support member 11, and are generated from the circuit boxes 24, 25, 26, and 27. The generated heat is not trapped in the housing 23. The plurality of heat radiation holes 29 also serve as screw attachment holes for screwing the unit side controller 20 to the table support member 11, and the unit side controller 20 is provided with a plurality of screws 30 inserted into the heat radiation holes 29. It is detachably attached to the support member 11 side. Here, since the heat radiating hole 29 (screw mounting hole) of the back plate 23a of the unit-side controller 20 coupled by the screw 30 with the screw mounting hole 11b on the table support member 11 side can be arbitrarily selected, if necessary. Thus, the mounting position of the unit-side controller 20 with respect to the table support member 11 can be adjusted.

  A positioning mechanism 31 that positions the substrate 2 on the substrate transport path 3 is provided at the front end of the first moving table 15 in contact with the front end of the substrate 2 transported by the substrate transport path 3. The positioning mechanism 31 includes a cylinder portion 32 suspended from the lower surface of the first table 15 and a piston rod 33 that protrudes downward from the cylinder portion 32 and extends. A substrate detection sensor 34 is provided on the surface on the incoming side. The piston rod 33 can be moved up and down by operating the cylinder lifting / lowering solenoid valve 31a from the unit-side controller 20 (FIG. 4) and driving the cylinder portion 32 which is a pneumatic actuator (arrow E shown in FIG. 3). ).

  When the adhesive applicator unit 1 is attached to the fixed beams 4 a and 4 b of the substrate transport path 3, the lower end of the piston rod 33 of the positioning mechanism 31 is close to the upper surface of the substrate 2 transported by the conveyor 5. In the upward movement position of the piston rod 33 (the position indicated by the solid line in FIG. 2), the tip of the piston rod 33 is positioned above the substrate 2, and the downward movement position of the piston rod 33 (the position indicated by the one-dot chain line in FIG. 2). Then, the tip of the piston rod 33 is located below the substrate 2.

  A substrate fixing member 40 is provided below the substrate transport path 3 so as to be movable up and down. This substrate fixing member 40 is in a state in which the adhesive applicator unit 1 is attached to the fixed beams 4a and 4b of the substrate conveyance path 3 in front of the piston rod 33 of the positioning mechanism 31 in the substrate conveyance direction (the substrate 2 is It is located on the incoming side). The substrate fixing member 40 can be moved up and down via a pneumatic actuator (not shown) (arrow F shown in FIG. 1) by operating the fixing member lifting electromagnetic valve 40a from the transport path side controller 6 (FIG. 4).

  Next, an operation procedure for applying an adhesive to the substrate 2 using the adhesive applicator unit 1 in the present embodiment will be described. To this end, first, the base portion 10 (table support member 11) of the adhesive applicator unit 1 is fixed to the fixed beams 4a and 4b which are fixed members of the substrate transport path 3, and the unit provided in the adhesive applicator unit 1 is provided. The side controller 20 and the transport path side controller 6 included in the substrate transport path 3 are connected by a connector cable 6a (FIGS. 2 and 4).

  When the above steps are completed, the unit-side controller 20 operates the rod lifting electromagnetic valve 31a to move the piston rod 33 of the positioning mechanism 31 downward, and then sends a signal to the transport path-side controller 6 to operate the conveyor 5. The substrate 2 is transported on the substrate transport path 3. The substrate 2 transported in the traveling direction (arrow A shown in FIG. 3) by the conveyor 5 abuts on the piston rod 33 positioned at the downward movement position and is positioned on the substrate transport path 3. When the substrate 2 has reached the position where the substrate 2 comes into contact with the piston rod 33, and the signal is sent to the unit side controller 20 (FIG. 4), the unit side controller 20 sends a signal to the transport path side controller 6. To stop the conveyor 5. Then, the rod raising / lowering electromagnetic valve 31a is operated to move the piston rod 33 of the positioning mechanism 31 upward, and a signal is sent to the transport path controller 6 to move the substrate fixing member 40 upward. Thus, the substrate 2 on the conveyor 5 is sandwiched between the substrate fixing member 40 and the substrate holding member 41 provided on the upper surfaces of the fixed beam 4a and the movable beam 4c, and is fixed on the substrate transport path 3.

When the substrate 2 is fixed on the substrate transport path 3, the unit-side controller 20 drives the first feed screw drive motor 17b to move the first moving table 15 relative to the fixed beam 12, and the second feed screw drive motor. 18 b is driven to move the second moving table 16 relative to the first moving table 15, and the coating head 14 is moved in the horizontal plane to be positioned above the substrate 2. Then, the coating head lifting motor 19a is driven to move the coating head 14 downward (see the nozzle 14a indicated by the alternate long and short dash line in FIG. 2), and then the discharge actuator 19b is operated to adhere to a predetermined position on the substrate 2. Apply the required amount of agent. When there are a plurality of locations on the substrate 2 where the adhesive is to be applied, the coating head 14 is moved to apply the required amount of adhesive to each of the required locations. In the present embodiment, an adhesive is applied to the plurality of lands 2 a on the substrate 2.

  When the application of the adhesive on the substrate 2 is completed, the unit-side controller 20 sends a signal to the transport path-side controller 6 to move down the substrate fixing member 40 and release the fixing of the substrate 2 on the substrate transport path 3. Then, an electronic component mounting apparatus that sends a signal to the transport path side controller 6 to operate the conveyor 5 and performs the next step (here, the step of mounting the electronic component on the land 2a of the substrate 2 coated with adhesive). Transport to.

  As described above, in the adhesive applicator unit 1 according to the present embodiment, the base unit 10 that is detachably attached to the fixed beams 4 a and 4 b that are the fixed-side members of the substrate transport path 3, and the head movement provided on the base unit 10. A coating head 14 that applies an adhesive to the substrate 2 positioned on the substrate transport path 3 by moving with respect to the base portion 10 by the mechanism 13 and the head mechanism 13 is configured as one unit. It can be used simply by being attached to the fixed side members (fixed beams 4a and 4b) of the substrate transport path 3. Therefore, it is possible to apply the adhesive to the substrate with a structure that is much cheaper than conventional expensive dedicated products.

  Here, the base unit 10 includes a fixed table 12 extending in a direction orthogonal to the substrate transfer direction of the substrate transfer path 3, and the head moving mechanism 13 extends on the fixed table 12 in the substrate transfer direction of the substrate transfer path 3, A first moving table 15 that moves along the fixed table 12 and a second moving table 16 that moves on the first moving table 15 along the first moving table 15 and supports the coating head 16 so as to be movable up and down. Since the configuration is simple and easy to control, the adhesive applicator unit 1 can be made cheaper.

  The adhesive applicator unit 1 also includes a positioning mechanism 31 (positioning means) for positioning the substrate 2 on the substrate transport path 3 in contact with the substrate 2 transported by the substrate transport path 3. Since the positioning mechanism 31 for the substrate 2 that is essential in the agent coating process is also incorporated in the unit 1 itself, it is very convenient. Note that the substrate fixing member 40 provided on the substrate transport path 3 side is not necessarily provided. Even if the substrate fixing member 40 is not provided, the positioning mechanism 31 causes the substrate fixing member 40 to be on the substrate transport path 3. If the drive of the conveyor 5 is stopped after positioning the board | substrate 2 by this, the adhesive agent with respect to the board | substrate 2 can be apply | coated.

  A unit-side controller 20 that controls the operation of the head moving mechanism 13 is attached to the base unit 10 (table support member 11), and a control unit that is indispensable for the operation control of the unit 1 is incorporated in the unit 1 itself. Therefore, it is easy to use and has a very simple configuration. As a result of arranging all the circuits (circuit boxes 24, 25, 26, and 27) required by the unit-side controller 20 in one place in order to realize such simplicity, the amount of generated heat is relatively high. Large circuits (drive circuit boxes 24 and 25 and power supply circuit box 26) and circuits with relatively small amounts of heat generation (storage circuit box 27) must be mixed, but as described above, the amounts of heat generated are relatively Large circuits (the drive circuit boxes 24 and 25 and the power circuit box 26) are disposed above or to the side of the circuit (the storage circuit box 27) that generates a relatively small amount of heat. In particular, it is possible to prevent the occurrence of malfunctions such as malfunctions caused by a small circuit receiving heat from a circuit that generates a relatively large amount of heat.

Furthermore, a plurality of heat radiation holes 29 are provided in the back plate 23a, which is a mounting surface of the unit-side controller 20 to the base portion 10 (table support member 11), which is generated from the circuit boxes 24, 25, 26, and 27. Although heat is not trapped in the unit-side controller 20 (inside the casing 23), the unit-side controller 20 is detachably attached to the base portion 10 by screws 30 inserted into the heat radiation holes 29. Therefore, it is possible to reduce the cost by omitting the step of separately providing a screw hole for attaching the unit-side controller 20 to the base portion 10.

  Although the embodiments of the present invention have been described so far, the present invention is not limited to those shown in the above-described embodiments. For example, in the above-described embodiment, the base unit 10 is configured so as to straddle the two fixed-side members (fixed beams 4 a and 4 b) of the substrate transport path 3. It may be attached in a state. In the above-described embodiment, the head moving mechanism 13 extends in the substrate transport direction of the substrate transport path 3 and moves on the fixed table 12 along the fixed table 12 (that is, in a direction orthogonal to the substrate transport direction). Although it was the structure provided with the 1st movement table 15 and the 2nd movement table 16 which moves on the 1st movement table 15 along the 1st movement table 15, and supports the coating head 14 so that raising / lowering is possible, The configuration is not particularly limited as long as the configuration is provided in the portion 10 and can move the coating head 14. Further, the positioning means for positioning the substrate 2 on the substrate transport path 3 in contact with the substrate 2 transported by the substrate transport path 3 is not necessarily the same as the positioning mechanism 31 shown in the above embodiment. There is no need.

  In the above-described embodiment, the drive circuit boxes 24 and 25, the power supply circuit box 26, and the storage circuit box 27 are shown as a plurality of circuits included in the unit-side controller 20, but the circuits included in the unit-side controller 20 are those circuits. It is not limited to things. Further, the shape, number, arrangement and the like of the heat radiation holes 29 formed on the attachment surface (back plate 23a) to the base portion 10 of the unit-side controller 20 are limited to those shown in the above-described embodiment (FIG. 5). I don't mean.

  The adhesive can be applied to the substrate with a structure that is much cheaper than conventional expensive dedicated products.

The perspective view of the adhesive applicator unit in one embodiment of this invention The side view of the adhesive applicator unit in one embodiment of this invention The partially exploded perspective view of the adhesive applicator unit in one embodiment of this invention Control system diagram of adhesive applicator unit in one embodiment of the present invention The perspective view of the unit side controller in one embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive coating machine unit 2 Board | substrate 3 Board | substrate conveyance path 4a, 4b Fixed beam (fixed side member)
DESCRIPTION OF SYMBOLS 10 Base part 12 Fixed table 13 Head moving mechanism 14 Application | coating head 15 1st moving table 16 2nd moving table 31 Positioning mechanism (positioning means)

Claims (2)

A base portion that is detachably attached to the two fixed-side members of the substrate transport path, a head moving mechanism provided on the base portion, and moved relative to the base portion by the head moving mechanism and positioned on the substrate transport path An application head for applying an adhesive to the substrate ,
The base portion extends between the pair of table support members that are detachably attached to the two fixed-side members and the pair of table support members and extends in a direction perpendicular to the substrate transport direction of the substrate transport path. The head moving mechanism includes a first moving table that extends in the substrate transport direction of the substrate transport path and moves along the fixed table, and the head moving mechanism along the first moving table along the first moving table. An adhesive applicator unit comprising: a second moving table that moves and supports the coating head so as to be movable up and down. 2. The adhesive application according to claim 1, further comprising positioning means for positioning the substrate on the substrate transport path by contacting the substrate transported by the substrate transport path at a front end portion of the first moving table. Machine unit.

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