JP2013115346A - Board working device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board working device in which a separate drive source is not required for each work head, and the burden can be reduced during the replacement work of a plurality of work heads performing works different from each other.SOLUTION: The board working device 100 includes a head attachment unit 31 capable of replacing a dispense head 10 performing the coating work of a liquid material to a board and a mount head 20 performing the mounting work for the board selectively, and an R axis motor 33 used commonly for the dispense head 10 and the mount head 20, drives the dispense head 10 so as to apply the liquid material when the dispense head 10 is attached to the head attachment unit 31, and drives the mount head 20 when the mount head 20 is attached to the head attachment unit 31.

Description

  The present invention relates to a substrate working apparatus, and more particularly to a substrate working apparatus capable of changing a plurality of work heads that perform different operations.

  2. Description of the Related Art Conventionally, there has been known a substrate working apparatus capable of changing a plurality of work heads that perform different works (for example, see Patent Document 1).

  In Patent Document 1, an application head (first working head) that performs an adhesive application work, a mounting head (second work head) that performs component mounting work, and an inspection head that performs inspection work can be replaced. An anti-substrate working machine (substrate working apparatus) is disclosed. Each head of the substrate working machine is provided with a corresponding drive source dedicated to the work, and each head is configured to be replaced together with the dedicated drive source.

JP 2010-4059 A

  However, in the substrate work machine (substrate working apparatus) of Patent Document 1 described above, since it is necessary to replace each head integrally with each drive source, the work for replacing the head becomes large, and as a result, during the head replacement work. There is a problem that the burden is large. Further, in the above-mentioned substrate-to-substrate working machine of Patent Document 1, since each head is integrally replaced for each drive source, there is a problem that it is necessary to provide a separate drive source for each head.

  The present invention has been made to solve the above-described problems, and one object of the present invention is not to provide a separate drive source for each work head, and to perform a plurality of different operations. It is an object of the present invention to provide a substrate working apparatus capable of reducing the burden at the time of work head replacement work.

  To achieve the above object, a substrate working apparatus according to one aspect of the present invention includes a first working head for a dispenser that applies a liquid material to a substrate, and a first working head for the substrate. Is used in common for the head mounting portion that can selectively replace the second working head that performs different operations, and the first working head and the second working head, and when the first working head is mounted on the head mounting portion. Comprises a drive source for driving the first work head so that the liquid material is applied, and for driving the second work head when the second work head is mounted on the head mounting portion.

  In the substrate working apparatus according to one aspect of the present invention, as described above, when the first working head is mounted on the head mounting portion, the first working head is driven so that the liquid material is applied, and the head mounting is performed. When the second work head is attached to the head, the second work head is driven, and the drive source is commonly used for the first work head and the second work head. Since it is not necessary to replace the drive source that drives the work head between when the work head is attached and when the second work head is attached, when replacing the work head, a drive source other than the commonly used drive source is used. Only the part can be replaced. Thereby, the burden at the time of the replacement | exchange operation | work of the some work head which performs a mutually different operation | work can be reduced. Further, since the drive source can be used in common for both the first work head and the second work head, it is not necessary to provide a separate drive source for each work head. Therefore, in this substrate working apparatus, it is not necessary to provide a separate drive source for each work head, and it is possible to reduce the burden when replacing a plurality of work heads that perform different works. Moreover, since it is not necessary to provide a separate drive source for each work head, the number of drive sources can be reduced. As a result, even if the drive source is provided in the substrate working apparatus, it is possible to suppress the configuration of the substrate working apparatus from becoming complicated. Further, even when the second work head other than the dispenser is replaced with the first work head for the dispenser, the drive source for driving the second work head should be used as the drive source for applying the liquid material. Therefore, it is not necessary to provide a separate drive source dedicated to the liquid material application operation.

  In the substrate working apparatus according to the above aspect, the common working shaft is preferably used in common for the first working head and the second working head, and transmits the driving force of the driving source to the first working head and the second working head. Is further provided. With this configuration, the drive shaft that transmits the drive force of the drive source as well as the common drive source when the first work head is attached to the head attachment portion and when the second work head is attached to the head attachment portion. Since it is not necessary to replace the work head, the burden of replacing the work head can be further reduced. In addition, since not only the drive source but also the number of drive shafts can be reduced, it is possible to further suppress the complexity of the configuration of the substrate working apparatus.

  In the substrate working apparatus according to the above aspect, the second working head is preferably a mounting working head for mounting components on the substrate, and the driving source is mounted on the head mounting portion by the mounting second working head. In such a case, the second work head is driven so as to change the posture of the component held by the second work head. If comprised in this way, when the 1st work head is mounted | worn by the head mounting part and the case where the 2nd work head is mounted | worn, respectively, the application | coating operation | work of a liquid material and the operation | work of changing the attitude | position of a holding component are each carried out. Since a common drive source can be used, the liquid material application work by the first work head and the holding part posture change work by the second work head can be performed without providing a separate drive source dedicated to each work. It can be carried out.

  In this case, preferably, a plurality of head mounting portions are provided, and a drive source is commonly used for the plurality of head mounting portions, and when a plurality of second work heads are mounted on the plurality of head mounting portions. The plurality of second working heads are configured to be driven in parallel. If comprised in this way, since several 2nd working heads can be driven with one drive source, it is not necessary to provide a separate drive source in each of several 2nd working heads.

  In the configuration in which the plurality of head mounting portions are provided, the first working head preferably cuts off the driving force of the driving source so that the liquid material is not applied or applies the driving force of the driving source so that the liquid material is applied. In the case where the first working head is mounted on the plurality of head mounting portions and the predetermined first working head performs the coating operation, the clutch mechanism for transmitting is provided. The first working head is mounted on the head mounting portion when the driving force of the driving source is cut off by the clutch mechanism and the second working head mounted on the head mounting portion performs work on the substrate. The first working head is configured such that the driving force of the driving source is interrupted by the clutch mechanism. With this configuration, the driving force of the driving source is cut off by the clutch mechanism for the first working head that is not the driving target (non-driving target) even in the configuration in which the driving source is commonly used for the plurality of head mounting portions. Therefore, it is possible to prevent the application (discharge) operation from being performed by the first work head that is not the driving target.

  In the configuration in which the first working head has a clutch mechanism, it is preferable that the first working head further includes a pneumatic supply unit that performs suction and mounting operations of components by the second working head for mounting. Driven by the air pressure supplied from the unit, the driving force of the driving source is cut off or transmitted. If comprised in this way, since the pneumatic supply part which performs adsorption | suction and mounting operation | movement of the components by a 2nd working head can be diverted as a drive source of the clutch mechanism of a 1st working head, it is for driving a clutch mechanism. There is no need to provide a dedicated drive source separately. Also by this, it can suppress that the structure of a substrate working apparatus becomes complicated.

  In the configuration including the air pressure supply unit, the first working head is preferably configured so that the air pressure supplied from the air pressure supply unit drives the clutch mechanism in a direction to cut off the driving force of the drive source. A biasing member that biases the clutch mechanism in a direction to assist the driving operation. With this configuration, when the air pressure supply unit that performs the component adsorption and mounting operation is used for driving the clutch mechanism, the air pressure supplied by the air pressure supply unit is small as the air pressure for driving the clutch mechanism. However, since the driving operation of the clutch mechanism by the air pressure supply unit is assisted by the urging member, the clutch mechanism can be reliably driven.

  In the configuration in which the first working head has a clutch mechanism, the first working head preferably includes an arm and a piston to which the driving force of the driving source is transmitted via the arm, and the driving force of the driving source is the piston. The liquid material is pushed out from the first working head by the piston by being transmitted to the clutch, and the clutch mechanism is configured to transmit the driving force of the driving source to the piston by bending the arm. It is configured to block. With this configuration, the clutch mechanism can easily cut off the driving force of the driving source simply by bending the arm, so that the first working head that is not a driving target (non-driving target) can be easily used. It is possible to prevent the application (discharge) operation from being performed.

  In the configuration in which the first working head includes an arm and a piston, preferably, the first working head is disposed between the arm and the piston, and a driving force transmission unit that transmits the driving force of the driving source from the arm to the piston. The clutch mechanism is configured to block transmission of the driving force of the driving source to the piston by moving the driving force transmitting portion away from the piston when the arm is bent. . With this configuration, the clutch mechanism can move the driving force transmission unit away from the piston so that the driving force transmission unit and the piston do not come into contact with each other. It is possible to prevent the driving force from being transmitted to the piston. As a result, the driving force of the driving source can be reliably interrupted.

  According to the present invention, as described above, it is not necessary to provide a separate drive source for each work head, and it is possible to reduce the burden at the time of replacement work of a plurality of work heads that perform different works.

1 is a schematic perspective view showing an overall configuration of a substrate working apparatus according to an embodiment of the present invention. 1 is a block diagram illustrating an overall configuration of a substrate working apparatus according to an embodiment of the present invention. It is the perspective view which showed the head unit of the substrate working apparatus by one Embodiment of this invention. It is sectional drawing for demonstrating the structure of the head mounting part of the substrate working apparatus by one Embodiment of this invention. It is sectional drawing which showed the state in which the driving force of an R-axis motor is transmitted in the dispense head with which the substrate working apparatus by one Embodiment of this invention was mounted | worn. It is sectional drawing which showed the state by which the driving force of the R-axis motor was interrupted | blocked in the dispensing head with which the board | substrate working apparatus by one Embodiment of this invention was mounted | worn. It is sectional drawing for demonstrating the structure of the mount head with which the substrate working apparatus by one Embodiment of this invention is mounted | worn.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  With reference to FIGS. 1-7, the structure of the substrate working apparatus 100 by one Embodiment of this invention is demonstrated.

  The substrate working device 100 according to the present embodiment functions as a dispenser device that applies (discharges) a liquid material such as solder or adhesive to the substrate, and also functions as a component mounting device that mounts components on the substrate. It is configured as follows. The substrate working apparatus 100 is configured so that the dispense head 10 for dispenser (see FIGS. 5 and 6) and the mount head 20 for component mounting (see FIGS. 3 and 7) can be selectively replaced. Has been. The dispense head 10 is an example of the “first working head” in the present invention, and the mount head 20 is an example of the “second working head” in the present invention.

  Specifically, as illustrated in FIG. 1, the substrate working apparatus 100 includes a transport unit 1 (see FIG. 2) that transports a substrate to a predetermined work position, a component supply unit 2 that supplies components, and a transport unit 1. The head unit 3 that performs a predetermined work on the substrate transported by the above-described structure and the exterior body 4 that covers the work area of the head unit 3 are provided. Further, as shown in FIG. 2, the substrate working apparatus 100 is configured such that each unit is controlled by the control unit 5.

  The transport unit 1 includes a pair of conveyors and is configured to transport the substrate in the X direction. Further, the transport unit 1 has a function of positioning and fixing the substrate at a predetermined work position by a positioning mechanism (not shown).

  As shown in FIG. 1, two component supply units 2 are provided and are arranged so that a part thereof is exposed from the exterior body 4. The component supply unit 2 includes a plurality of tape feeders 2a arranged in parallel in the X direction, and is configured to supply components to a predetermined component supply position by sequentially winding the tape feeder 2a. .

  The head unit 3 is supported by a head unit support portion 3a extending in the X direction. The head unit 3 is configured to be linearly movable in the X direction along a pair of X-axis rails 6a attached to the head unit support portion 3a by the driving force of the X-axis motor 6 formed of a servo motor. The pair of X-axis rails 6a are formed so as to extend in the X direction, and are arranged in parallel to each other. The head unit 3 is configured to be linearly movable in the Y direction along the pair of Y-axis rails 7a together with the head unit support portion 3a by the driving force of the Y-axis motor 7 (see FIG. 2) formed of a servo motor. Yes. The pair of Y-axis rails 7a are provided on a base (not shown). The pair of Y-axis rails 7a are formed so as to extend in the Y direction and are arranged in parallel to each other.

  Next, a detailed configuration of the head unit 3 will be described with reference to FIGS. 2 and 3.

  As shown in FIG. 3, the head unit 3 is provided with four head mounting portions 31 on which four work heads (the dispensing head 10 and the mount head 20) are mounted. The head unit 3 is provided with four Z-axis motors 32 corresponding to the four head mounting portions 31. Each Z-axis motor 32 includes a servo motor, and is configured to linearly move the corresponding head mounting portion 31 in the vertical direction (Z direction) along the pair of Z-axis rails 32a. Further, the four head mounting portions 31 are configured to be movable in the Z direction independently of each other.

  Further, the head unit 3 includes one R-axis motor 33 formed of a servo motor as shown in FIGS. The R-axis motor 33 is configured to be used in common for the four head mounting portions 31. Specifically, the head unit 3 is provided with four R-axis shafts 331 that transmit the driving force of the R-axis motor 33 to each of the four work heads mounted on the four head mounting portions 31. As shown in FIGS. 3 and 4, a pulley 331 a is attached to the upper end portion of each R-axis shaft 331, and a pulley 33 a is attached to the output shaft of the R-axis motor 33. One transmission belt 33 b is wound around the four pulleys 331 a of the four R-axis shafts 331 and the pulley 33 a of the R-axis motor 33. As a result, the four R-axis shafts 331 can be simultaneously rotated in parallel by one R-axis motor 33. The R-axis motor 33 is an example of the “drive source” in the present invention, and the R-axis shaft 331 is an example of the “drive shaft” in the present invention.

  The R-axis motor 33 is configured to drive the dispensing head 10 so that the liquid material is applied (discharged) from the dispensing head 10. The R-axis motor 33 is configured to drive the mount head 20 so as to change the posture of the component held by the mount head 20. That is, the R-axis motor 33 is commonly used for the dispense head 10 and the mount head 20.

  Further, as shown in FIG. 4, the R-axis shaft 331 is rotatably supported by two bearings 331b in the vicinity of the pulley 331a and is rotatably supported by one bearing 331c in the vicinity of the lower end portion. ing. In addition, two flat surfaces 331d arranged in parallel to each other are formed at the lower end portion of the R-axis shaft 331, and portions other than the lower end portion of the R-axis shaft 331 are formed in a columnar shape. The R-axis shaft 331 is used in common for the dispense head 10 and the mount head 20.

  Further, as shown in FIG. 2, the head unit 3 is provided with four air pressure supply portions 34 that supply air pressure to the four head mounting portions 31. Each air pressure supply unit 34 is configured to supply air pressure to the corresponding head mounting unit 31 via a pneumatic hose 341 (see FIGS. 3 and 4). Further, the four air pressure supply units 34 can switch between supply of negative pressure (vacuum pressure) and supply of positive pressure independently of each other based on a command from the control unit 5. In addition, the air pressure supply unit 34 has a function of performing component adsorption and mounting operations by the mount head 20 when the mount head 20 is mounted. Specifically, the air pressure supply unit 34 supplies negative pressure (vacuum pressure) when the mount head 20 sucks a component to suck up the component, and positive pressure when the mount head 20 mounts the component. To remove the component from the mount head 20. In the air pressure supply unit 34, the maximum pressures of the negative pressure and the positive pressure are set based on the component adsorption and mounting operations by the mount head 20.

  All of the four head mounting portions 31 are configured in the same manner. A cylindrical mounting portion main body 311 shown in FIG. 4 is provided inside each head mounting portion 31. The mounting portion main body 311 is configured such that the R-axis shaft 331 is inserted from above. In addition, a screw groove 311a for mounting the work head (the dispense head 10 and the mount head 20) is formed at the lower end of the mounting portion main body 311. In addition, a pneumatic inflow port 311 b is provided on the side portion of the mounting portion main body 311. A pneumatic hose 341 connected to the air pressure supply unit 34 is connected to the air pressure inlet 311b. Further, the mounting portion main body 311 is configured so that the dispenser dispensing head 10 (see FIGS. 5 and 6) and the component mounting mount head 20 (see FIG. 7) can be selectively replaced. Further, in the substrate working apparatus 100 of the present embodiment, the dispense head 10 can be attached to all the four attachment portion main bodies 311, and the mount head 20 can be attached to all the four attachment portion main bodies 311. Is also possible. Also, the dispensing head 10 and the mount head 20 can be mixed in the four mounting portion main bodies 311.

  Further, in the substrate working apparatus 100 of the present embodiment, as described above, by driving the R-axis motor 33, all the four R-axis shafts 331 are driven in parallel. When the dispense head 10 is attached to any of them, it is necessary to prevent the liquid material from being applied (discharged) from the dispense head 10 that is not a drive target (non-drive target). Therefore, when the plurality of dispense heads 10 are mounted on the four head mounting units 31, the control unit 5 performs application (discharge) work by a predetermined dispense head 10 among the plurality of mounted dispense heads 10. When performing the above, it is configured to operate a clutch mechanism 110 (to be described later) with respect to the other dispense heads 10 to cut off the driving force of the R-axis motor 33. Further, the control unit 5 is mounted when both the dispense head 10 and the mount head 20 are mounted on the four head mounting units 31 and when the mounting operation of the component is performed by the mounted mount head 20. In addition, a clutch mechanism 110, which will be described later, is actuated on all the dispense heads 10 to block the driving force of the R-axis motor 33. As a result, it is possible to prevent the application (discharge) operation from being performed by the dispense head 10 that is not a drive target (non-drive target).

  As for the mount head 20, even when the mount head 20 that is not a drive target (non-drive target) is driven, there is no influence on the mounting operation simply by changing the orientation of the holding component. No clutch mechanism is provided. That is, when a plurality of mount heads 20 are mounted on the four head mounting portions 31, all the mounted mount heads 20 are driven in parallel. The mounted mount head 20 is also driven in parallel when the dispense head 10 is driven.

  Next, with reference to FIG. 5 and FIG. 6, the structure of the dispense head 10 mounted on the head mounting unit 31 will be described.

  The dispense head 10 is configured to be attachable to the attachment portion main body 311 of the head attachment portion 31. Specifically, the dispensing head 10 is configured to be fixed to the mounting portion main body 311 by the lock nut 11 while being inserted from below into the cylindrical mounting portion main body 311. A thread 11 a corresponding to a thread groove 311 a formed at the lower end of the mounting portion main body 311 is formed at a portion of the lock nut 11 to be inserted into the mounting portion main body 311. Accordingly, the dispense head 10 can be attached to the attachment portion main body 311 by screwing the lock nut 11 into the lower end portion of the attachment portion main body 311.

  The dispensing head 10 includes an upper shaft 12, a movable arm 13 disposed below the upper shaft 12, and a ball screw 14 disposed below the movable arm 13. The upper shaft 12 and the movable arm 13 are disposed inside a cylindrical head exterior 10a. The clutch mechanism 110 is configured to be able to switch between the interruption of the driving force of the R-axis motor 33 and the transmission of the driving force of the R-axis motor 33, and the movable arm 13, an arm piston 133 and a claw portion described later. 134.

  The upper shaft 12 is formed to extend in the vertical direction (Z direction). The upper shaft 12 is supported by two bearings 121 so as to be rotatable about the vertical axis with respect to the head exterior 10a. A Y ring 122 having a Y-shaped cross section is provided between the outer surface of the upper shaft 12 and the inner surface of the head exterior 10a. Thereby, the airtightness between the upper shaft 12 and the head exterior 10a can be kept good. The Y ring 122 has a smaller friction coefficient than the O ring. Thereby, when the upper axis | shaft 12 rotates, the Y ring 122 can ensure favorable airtightness, rotating the upper axis | shaft 12 smoothly. A pair of S-shaped leaf springs 123 are fixedly attached to the upper end of the upper shaft 12 by bolts 123a. The pair of leaf springs 123 are configured to abut against the two flat surfaces 331d of the R-axis shaft 331 and sandwich the R-axis shaft 331, respectively. Thus, the upper shaft 12 is rotated about the vertical axis integrally with the R-axis shaft 331 by the rotation of the R-axis shaft 331 about the vertical axis.

  As shown in FIGS. 5 and 6, the movable arm 13 constituting the clutch mechanism 110 has an upper arm 131 and a lower arm 132. The upper arm 131 is attached to the lower end portion of the upper shaft 12 by a pin 131a. Further, the upper arm 131 is configured to be rotatable with respect to the upper shaft 12 with a pin 131a inserted in the horizontal direction as a rotation center. In addition, a projecting portion 131b that projects in the horizontal direction in a state where the upper arm 131 is disposed so as to extend in the vertical direction (the state shown in FIG. 5) is formed below the upper arm 131. The protruding portion 131b has a tip that is formed in a substantially arc shape. The lower arm 132 is attached to the lower end of the upper arm 131 by a pin 132a. The lower arm 132 is configured to be rotatable with respect to the upper arm 131 with a pin 132a inserted in the horizontal direction as a rotation center. Thus, the movable arm 13 is configured to be bendable. Further, the movable arm 13 is configured to rotate integrally with the upper shaft 12 around the vertical axis when the upper shaft 12 rotates about the vertical axis. The movable arm 13 is an example of the “arm” in the present invention.

  In addition, an arm piston 133 constituting the clutch mechanism 110 is provided around the connection portion between the upper shaft 12 and the upper arm 131 so as to surround the connection portion between the upper shaft 12 and the upper arm 131. A Y ring 133a is provided between the arm piston 133 and the head exterior 10a. Further, a Y ring 133 b is provided between the arm piston 133 and the upper shaft 12. The arm piston 133 is configured to be movable in the vertical direction (Z direction) with respect to the head exterior 10 a and the upper shaft 12. Specifically, as shown in FIG. 5, when air is supplied from the air pressure supply unit 34 via the air pressure hose 341 to the air chamber 133 c located above the arm piston 133 (when positive pressure is supplied). ), The arm piston 133 is pushed down by air pressure (positive pressure). Thereby, the clutch mechanism 110 is driven in a direction in which the driving force of the R-axis motor 33 is transmitted. On the other hand, as shown in FIG. 6, when the air in the air chamber 133c (see FIG. 5) is sucked by the air pressure supply unit 34 via the air pressure hose 341 (when negative pressure is supplied), the arm piston 133 is pulled upward by air pressure (negative pressure). As a result, the clutch mechanism 110 is driven in a direction that interrupts the driving force of the R-axis motor 33.

  Further, a claw portion 134 having a concave shape that can be engaged with the protruding portion 131 b of the upper arm 131 is provided integrally with the arm piston 133 at the lower end portion of the arm piston 133. This claw part 134 also constitutes a part of the clutch mechanism 110. Further, the portion of the claw portion 134 that contacts the protruding portion 131b is formed in a substantially arc shape so as to correspond to the tip end portion of the protruding portion 131b having a substantially arc shape. As shown in FIG. 5, the claw portion 134 is configured to engage with the protruding portion 131 b of the upper arm 131 when the arm piston 133 is pushed down (moved) downward. At this time, the upper arm 131 is arranged to extend in the vertical direction while being restricted from rotating by the inner side surface 133d of the arm piston 133. Thereby, the movable arm 13 will be in the extended state. Further, the claw portion 134 presses the protruding portion 131b of the upper arm 131 and rotates the upper arm 131 around the pin 131a when the arm piston 133 is pulled up (moved). It is configured. At this time, as shown in FIG. 6, the upper arm 131 is released from the restriction by the inner side surface 133d of the arm piston 133 and can rotate about the pin 131a. Details of the clutch operation by the clutch mechanism 110 will be described later.

  The ball screw 14 is formed to extend in the vertical direction (Z direction). Further, the ball screw 14 is attached to the lower arm 132 of the movable arm 13 via a hole screw holder 141. The hall screw holder 141 is attached to the lower end of the lower arm 132 by a pin 141a inserted in the horizontal direction. In addition, the ball screw 14 is configured to rotate integrally with the movable arm 13 around the vertical axis when the movable arm 13 rotates about the vertical axis. The ball screw 14 is configured to be pulled up (moved) upward when the movable arm 13 is bent.

  A nut 15 is screwed onto the ball screw 14. The nut 15 is configured to move in the vertical direction when the ball screw 14 rotates about the vertical axis. The nut 15 is configured to move in the vertical direction together with the ball screw 14 when the ball screw 14 moves in the vertical direction by the bending operation of the movable arm 13.

  A pressing plate 16 is provided below the nut 15. The pressing plate 16 is fixedly attached to the nut 15 with screws 151 and is configured to move integrally with the nut 15. Thereby, when the ball screw 14 is pulled upward by bending the movable arm 13, the pressing plate 16 is pulled upward together with the nut 15. Further, the pressing plate 16 is pressed upward by a compression spring 161 disposed below. As shown in FIG. 6, the compression spring 161 assists in pulling up (moving) the pressing plate 16 upward when the movable arm 13 can be bent due to the suction operation by the air pressure supply unit 34. It has a function. That is, the compression spring 161 causes the clutch in a direction that assists the driving operation of the clutch mechanism 110 by the air pressure supply unit 34 when the air pressure supply unit 34 drives the clutch mechanism 110 in a direction in which the driving force of the R-axis motor 33 is interrupted. The mechanism 110 is configured to be biased. Thus, even when the suction force (negative pressure) by the air pressure supply unit 34 is not large enough to pull up the pressing plate 16, the pressing plate 16 is reliably pulled up by the pressing force (biasing force) of the compression spring 161 ( Can be moved). The pressing plate 16 is an example of the “driving force transmitting portion” in the present invention, and the compression spring 161 is an example of the “biasing member” in the present invention.

  Further, as shown in FIGS. 5 and 6, a nozzle holder 17 is provided below the pressing plate 16. A discharge piston 18 is inserted into the nozzle holder 17. The discharge piston 18 is disposed so as to protrude upward from the nozzle holder 17. Further, the discharge piston 18 is pressed (biased) upward by a compression spring 181. Further, the discharge piston 18 has an elongated portion 18a formed in an elongated shape. The elongated portion 18a is formed from the center in the vertical direction of the discharge piston 18 to the lower end. An adapter 182 is provided inside the nozzle holder 17. The adapter 182 has a through hole 182a extending in the vertical direction. The elongated portion 18a of the discharge piston 18 is inserted into the through hole 182a from above. The through-hole 182a of the adapter 182 is connected to a syringe 30 that stores a liquid material such as solder or adhesive via a liquid material hose 31. That is, the liquid material is supplied from the syringe 30 through the liquid material hose 31 into the through hole 182a. An O-ring 182 b is provided between the adapter 182 and the nozzle holder 17. The discharge piston 18 is an example of the “piston” in the present invention.

  A spherical liquid dripping prevention valve 183 is provided below the through hole 182 a of the adapter 182. The dripping prevention valve 183 is pressed (biased) from below to above by a compression spring 184. As a result, the dripping prevention valve 183 can contact the lower end portion of the through hole 182a and seal the lower end portion of the through hole 182a with the urging force of the compression spring 184. Further, the dripping prevention valve 183 and the compression spring 184 are provided inside the cylindrical member 185. An O-ring 185 a is provided between the cylindrical member 185 and the nozzle holder 17. A nozzle 19 is provided below the cylindrical member 185. The nozzle 19 is fixedly attached to the nozzle holder 17 by an adapter 191. Further, an O-ring 191 a is provided between the nozzle 19 and the adapter 191.

  In addition, a heater 10b is attached to the side portion of the dispensing head 10 to bring the viscosity of the liquid material such as solder or adhesive into an appropriate state. The heater 10 b is configured to be controlled by the control unit 5 via a temperature control cable 10 c connected to the dispense head 10.

  Next, with reference to FIGS. 5 and 6, the application (discharge) operation by the dispense head 10 will be described.

  First, the air pressure supply unit 34 is controlled by the control unit 5 to supply air (supply positive pressure) to the dispense head 10 via the air pressure hose 341 as shown in FIG. As a result, the air chamber 133c is filled with air, and the arm piston 133 is pushed downward by air pressure (positive pressure). At this time, the upper arm 131 is arranged to extend in the vertical direction while being restricted from rotating by the inner side surface 133d of the arm piston 133. Further, the protruding portion 131 b of the upper arm 131 is engaged with the claw portion 134. In this way, the movable arm 13 is extended.

  By extending the movable arm 13, the ball screw 14, the nut 15, and the pressing plate 16 are integrally pushed downward with respect to the bent state of the movable arm 13 shown in FIG. 6. At this time, the pressing plate 16 is pushed down against the upward biasing force of the compression spring 161. In this state, the controller 5 drives the R-axis motor 33 to drive (rotate) the R-axis shaft 331. As a result, the driving force of the R-axis motor 33 is transmitted to the ball screw 14 via the R-axis shaft 331, the upper shaft 12, and the movable arm 13, and the ball screw 14 is rotated about the vertical axis. At this time, since the pressing plate 16 is moved downward together with the nut 15, the discharge piston 18 is pressed downward by the lower surface of the pressing plate 16. The discharge piston 18 is moved downward against the urging force of the compression spring 181. When the discharge piston 18 moves downward, the elongated portion 18a of the discharge piston 18 reduces the volume of the through hole 182a of the adapter 182 to increase the liquid pressure of the liquid material inside. As the hydraulic pressure is increased, the dripping prevention valve 183 is pushed downward against the urging force of the compression spring 184. As a result, the liquid material is pushed out from the through hole 182 a and applied (discharged) from the tip of the nozzle 19 through the cylindrical member 185.

  Thereafter, the R-axis motor 33 is driven in the direction opposite to that during discharge by the controller 5 to drive (rotate) the R-axis shaft 331. Along with this, the pressing plate 16 is moved upward together with the nut 15, so that the discharge piston 18 is pushed back upward by the urging force of the compression spring 181. Thereby, the volume of the through-hole 182a of the adapter 182 is enlarged, and the liquid pressure of an internal liquid material falls. Then, the dripping prevention valve 183 is moved upward by the urging force of the compression spring 184, and the lower end of the through hole 182a is sealed. By continuing to drive the R-axis motor 33 in this state, the volume of the through-hole 182a is further expanded by the upward movement of the discharge piston 18, and thus a negative pressure is generated in the through-hole 182a. Thereby, the liquid material of the syringe 30 is replenished (sucked) into the through hole 182a via the liquid material hose 31. In this way, a single application (discharge) operation is performed. In the substrate working apparatus 100 of the present embodiment, as described above, when the solder is applied by repeating the vertical movement of the discharge piston 18, approximately 4 shots / second is applied, and when the adhesive is applied. The application (discharge) operation can be continuously performed at a speed of approximately 10 shots / second.

  Next, referring to FIGS. 5 and 6, the clutch operation of the dispensing head 10 will be described.

  First, the air pressure supply unit 34 is controlled by the control unit 5, and air is sucked from the air chamber 133c (see FIG. 5) of the dispense head 10 via the air pressure hose 341 as shown in FIG. To do). As a result, the arm piston 133 is pulled upward by the negative pressure. At this time, the upper arm 131 is released from the restriction by the inner side surface 133d of the arm piston 133 and can rotate about the pin 131a. Further, the protruding portion 131b of the upper arm 131 is pressed by the claw portion 134 that moves upward. As a result, the upper arm 131 is rotated about the pin 131a. Along with this, the pressing plate 16 is pulled upward (moved) via the ball screw 14 and the nut 15. Further, the pressing plate 16 is further lifted (moved) by the urging force of the compression spring 161. That is, the pressing plate 16 is moved in a direction (upward) away from the discharge piston 18 by the air pressure by the air pressure supply unit 34 and the biasing force of the compression spring 161, and the pressing plate 16 and the discharge piston 18 are separated from each other. As a result, it is possible to prevent the application (discharge) operation from being performed by interrupting the driving force of the R-axis motor 33. That is, in this state, even if the ball screw 14 is rotated by the drive of the R-axis motor 33 and the nut 15 moves downward, the pressing plate 16 is separated from the discharge piston 18 by a predetermined distance. The position that contacts the discharge piston 18 is not reached. For this reason, since the discharge piston 18 is not moved downward, the liquid material application (discharge) operation is not performed. As described above, in the substrate working apparatus 100 of the present embodiment, the clutch mechanism 110 is driven by the air pressure supplied from the air pressure supply unit 34 to cut off the driving force of the R-axis motor 33.

  Next, the configuration of the mount head 20 mounted on the head mounting portion 31 will be described with reference to FIG.

  The mount head 20 is configured to be mountable on the mounting portion main body 311 of the head mounting portion 31. Specifically, the mount head 20 is fixed to the mounting portion main body 311 by the lock nut 21 while being inserted from below into the cylindrical mounting portion main body 311 as in the case of the dispensing head 10. It is configured as follows. A thread 21 a corresponding to a thread groove 311 a formed at the lower end of the mounting portion main body 311 is formed at a portion of the lock nut 21 to be inserted into the mounting portion main body 311. As a result, it is possible to mount the mount head 20 to the mounting portion main body 311 by screwing the lock nut 21 into the lower end portion of the mounting portion main body 311.

  The mount head 20 includes a cylindrical head exterior 22, a head body 23 inserted into the head exterior 22, and a suction nozzle 24 attached to the lower portion of the head body 23.

  Two Y rings 221 are provided between the outer surface of the head exterior 22 and the inner surface of the mounting portion main body 311. The head body 23 is formed to extend in the vertical direction (Z direction). The head body 23 is supported by the three bearings 231 so as to be rotatable about the vertical axis with respect to the mounting portion body 311. A pair of S-shaped leaf springs 232 are fixedly attached to the upper end portion of the head body 23 by bolts 232a. The pair of leaf springs 232 are configured to abut against the two flat surfaces 331d of the R-axis shaft 331 and sandwich the R-axis shaft 331, like the pair of leaf springs 123 of the dispense head 10. . Thereby, the head main body 23 is rotated about the vertical axis integrally with the R-axis shaft 331 by the R-axis shaft 331 rotating about the vertical axis. An air passage portion 233 is formed in the head main body 23. The air passage part 233 is connected to the air pressure supply part 34 via the air pressure inlet 311 b and the air pressure hose 341.

  The suction nozzle 24 is fixedly attached to the head main body 23 by an attachment member 25. The suction nozzle 24 has a through hole 241, and the through hole 241 communicates with the air passage portion 233 of the head body 23. As a result, the negative pressure is supplied by the air pressure supply unit 34, whereby the component can be sucked and held at the lower end portion of the suction nozzle 24. In addition, when the positive pressure is supplied from the air pressure supply unit 34, the components held by the suction nozzle 24 can be detached. Further, the suction nozzle 24 is configured to rotate integrally with the head main body 23 when the head main body 23 rotates about the vertical axis. With such a configuration, it is possible to change the posture of the held component by driving the R-axis motor 33 and rotating the suction nozzle 24 about the vertical axis while holding the component by the suction nozzle 24. is there.

  In the present embodiment, as described above, when the dispensing head 10 is mounted on the head mounting portion 31, the dispensing head 10 is driven so that the liquid material is applied, and the mount head 20 is mounted on the head mounting portion 31. In such a case, the R-axis motor 33 is commonly used for the dispense head 10 and the mount head 20 so as to drive the mount head 20. This eliminates the need to replace the R-axis motor 33 that drives the work head between when the dispense head 10 is attached to the head attachment portion 31 and when the mount head 20 is attached. Can replace only the portion other than the commonly used R-axis motor 33. Thereby, the burden at the time of the replacement | exchange operation | work of the some work head which performs a mutually different operation | work can be reduced. Further, since the R-axis motor 33 can be commonly used for both the dispense head 10 and the mount head 20, it is not necessary to provide a separate drive source for each work head. Therefore, in this substrate working apparatus 100, it is not necessary to provide a separate drive source for each work head, and it is possible to reduce the burden when replacing a plurality of work heads that perform different works. Moreover, since it is not necessary to provide a separate drive source for each work head, the number of drive sources can be reduced. As a result, even if the drive source is provided in the substrate working apparatus 100, the configuration of the substrate working apparatus 100 can be suppressed from becoming complicated. Even when the mount head 20 is replaced with the dispense head 10, the R-axis motor 33 for driving the mount head 20 can be used as a drive source for applying the liquid material. There is no need to provide a separate drive source dedicated to work.

  In the present embodiment, a common R-axis shaft 331 that is used in common for the dispense head 10 and the mount head 20 and transmits the driving force of the R-axis motor 33 to the dispense head 10 and the mount head 20 is provided. Accordingly, the R-axis shaft that transmits the driving force of the R-axis motor 33 as well as the common R-axis motor 33 when the dispense head 10 is mounted on the head mounting portion 31 and when the mount head 20 is mounted. Since it is not necessary to replace 331 as well, it is possible to further reduce the burden when replacing the work head. Further, since not only the R-axis motor 33 but also the number of R-axis shafts 331 can be reduced, it is possible to further suppress the configuration of the substrate working apparatus 100 from becoming complicated.

  In the present embodiment, when the mount head 20 is mounted on the head mounting portion 31, the mount head 20 is driven by the R-axis motor 33 so as to change the posture of the component held by the mount head 20. As a result, the common R-axis motor performs the liquid material application operation and the holding component posture change operation when the dispensing head 10 is mounted on the head mounting portion 31 and when the mount head 20 is mounted. 33, it is possible to perform a liquid material application operation by the dispense head 10 and a posture change operation of the holding component by the mount head 20 without separately providing an R-axis motor 33 dedicated to each operation. it can.

  In the present embodiment, when a plurality of mount heads 20 are mounted on the four head mounting portions 31, the mounted mount heads 20 are driven in parallel by the R-axis motor 33. As a result, a plurality of mount heads 20 can be driven by one R-axis motor 33, so there is no need to provide a separate R-axis motor 33 for each of the plurality of mount heads 20.

  Further, in the present embodiment, when the dispensing head 10 is mounted on the four head mounting portions 31 and the predetermined dispensing head 10 performs a coating operation, the dispensing head 10 other than the predetermined dispensing head 10 The driving force of the R-axis motor 33 is cut off by the clutch mechanism 110. Further, when the mount head 20 mounted on the head mounting portion 31 performs a mounting operation, the driving force of the R-axis motor 33 is blocked by the clutch mechanism 110 in the dispense head 10 mounted on the head mounting portion 31. Thus, even in the configuration in which the R-axis motor 33 is commonly used for the four head mounting portions 31 as in the present embodiment, the R-axis motor is not driven (not driven) by the clutch mechanism 110 with respect to the dispense head 10. Since the drive force 33 is cut off, it is possible to prevent the application (discharge) operation from being performed by the dispense head 10 that is not the drive target.

  Further, in the present embodiment, the driving force of the R-axis motor 33 is cut off by driving the clutch mechanism 110 of the dispensing head 10 by the air pressure supplied from the air pressure supply unit 34 that performs the component adsorption and mounting operations by the mount head 20. Or communicate. As a result, the air pressure supply unit 34 that performs component suction and mounting operations by the mount head 20 can be used as a drive source for the clutch mechanism 110 of the dispense head 10, and thus a dedicated drive for driving the clutch mechanism 110. There is no need to provide a separate source. Also by this, it can suppress that the structure of the substrate working apparatus 100 becomes complicated.

  Further, in the present embodiment, when the clutch mechanism 110 is driven by the air pressure supplied from the air pressure supply unit 34 in the direction in which the driving force of the R-axis motor 33 is cut off, the air pressure supply unit 34 assists the driving operation of the clutch mechanism 110. A compression spring 161 that urges the clutch mechanism 110 is provided in the direction to move. As a result, when the air pressure supply unit 34 that performs component suction and mounting operations is used for driving the clutch mechanism 110, the air pressure supplied by the air pressure supply unit 34 is small as the air pressure for driving the clutch mechanism 110. However, since the compression spring 161 assists the driving operation of the clutch mechanism 110 by the air pressure supply unit 34, the clutch mechanism 110 can be driven reliably.

  In the present embodiment, the clutch mechanism 110 is configured to block the transmission of the driving force of the R-axis motor 33 to the discharge piston 18 by bending the movable arm 13. As a result, the driving force of the R-axis motor 33 can be easily interrupted simply by bending the movable arm 13 by the clutch mechanism 110, so that the dispensing (discharge) operation can be easily performed by the dispense head 10 that is not the driving target. It can be prevented from being performed.

  Further, in this embodiment, the clutch mechanism 110 bends the movable arm 13 to move the pressing plate 16 away from the discharge piston 18, and the driving force of the R-axis motor 33 is transmitted to the discharge piston 18. Shut off. Thus, the clutch plate 110 can move the pressing plate 16 away from the discharge piston 18 so that the pressing plate 16 and the discharge piston 18 do not come into contact with each other. It is possible to prevent the driving force from being transmitted to the 18. As a result, the driving force of the R-axis motor 33 can be reliably interrupted.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, a mounting head for mounting is shown as an example of the second working head of the present invention, but the present invention is not limited to this. In the present invention, the second work head may be a work head other than the mount head as long as it can use a common drive source with the first work head for the dispenser. For example, the second working head may be an inspection head for inspecting a substrate or a component.

  Moreover, in the said embodiment, although the compression spring was shown as an example of the biasing member of this invention, this invention is not limited to this. In the present invention, for example, a biasing member other than a compression spring such as a leaf spring may be used.

  In the above embodiment, as an example of the drive source of the present invention, the R-axis motor that drives the mount head so as to change the posture of the component held by the mount head (second working head) is shown. Is not limited to this. In the present invention, a drive source other than the R-axis motor that drives the second work head so that an operation other than the operation of changing the posture of the component by the second work head may be performed.

  Moreover, although the example which provides four head mounting parts was shown in the said embodiment, this invention is not limited to this. In the present invention, only one head mounting portion may be provided, or a plurality of head mounting portions other than four may be provided.

10 Dispensing head (first working head)
13 Movable arm (arm, clutch mechanism)
16 Press plate (driving force transmission part)
18 Discharge piston (piston)
20 Mount head (second working head)
31 Head mounting part 33 R-axis motor (drive source)
34 Air Pressure Supply Unit 100 Substrate Working Device 110 Clutch Mechanism 133 Arm Piston (Clutch Mechanism)
161 Compression spring (biasing member)
331 R-axis shaft (drive shaft)

Claims (9)

A first working head for a dispenser that applies a liquid material to a substrate, and a head mounting portion that can selectively replace a second working head that performs a work different from the first working head on the substrate. When,
Commonly used for the first work head and the second work head, and when the first work head is mounted on the head mounting portion, the first work head is driven so that the liquid material is applied. A substrate working apparatus comprising: a drive source that drives the second work head when the second work head is attached to the head mounting portion.   2. The apparatus according to claim 1, further comprising a common drive shaft that is used in common for the first work head and the second work head and transmits a driving force of the drive source to the first work head and the second work head. The board | substrate working apparatus of description. The second work head is a work head for mounting for mounting components on a substrate,
The drive source drives the second work head so as to change the posture of a component held by the second work head when the second work head for mounting is mounted on the head mounting portion. The board | substrate working apparatus of Claim 1 or 2 comprised as follows. A plurality of the head mounting portions are provided,
The drive source is used in common for the plurality of head mounting portions, and when the plurality of second working heads are mounted on the plurality of head mounting portions, the plurality of second working heads are arranged in parallel. The board | substrate working apparatus of Claim 3 comprised so that it might drive. The first working head has a clutch mechanism that cuts off the driving force of the driving source so that the liquid material is not applied or transmits the driving force of the driving source so that the liquid material is applied,
When the first work head is mounted on a plurality of the head mounting portions and the predetermined first work head performs a coating operation, the first work heads other than the predetermined first work head are When the driving force of the driving source is interrupted by the clutch mechanism and the second working head mounted on the head mounting portion performs an operation on the substrate, the second mounting head mounted on the head mounting portion is used. The substrate working apparatus according to claim 4, wherein one working head is configured such that the driving force of the driving source is interrupted by the clutch mechanism. An air pressure supply unit for adsorbing and mounting components by the second working head for mounting;
The substrate work according to claim 5, wherein the clutch mechanism of the first work head is configured to be driven by air pressure supplied from the air pressure supply unit to cut off or transmit the driving force of the drive source. apparatus.   The first working head assists the driving operation of the clutch mechanism by the air pressure supply unit when driving the clutch mechanism in a direction to cut off the driving force of the drive source by the air pressure supplied from the air pressure supply unit. The substrate working apparatus according to claim 6, comprising a biasing member that biases the clutch mechanism in a direction. The first working head includes an arm and a piston to which a driving force of the driving source is transmitted via the arm, and the driving force of the driving source is transmitted to the piston, whereby the piston causes the piston to transmit the driving force. The liquid material is configured to be pushed out of the first working head,
The said clutch mechanism is comprised so that it may interrupt | block that the driving force of the said drive source is transmitted to the said piston by the said arm being bent. Substrate working device. The first working head further includes a driving force transmission unit that is disposed between the arm and the piston, and transmits a driving force of the driving source from the arm to the piston.
The clutch mechanism is configured to block transmission of the driving force of the driving source to the piston by moving the driving force transmitting portion away from the piston when the arm is bent. The substrate working apparatus according to claim 8.

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