JP2010268654A - Motor cooling device and component mounting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor cooling device by which efficiency of cooling movers by cooling parts can be improved while suppressing enlargement (greater capacity) of the cooling parts. <P>SOLUTION: This motor cooling device includes: linear motors 7 each including a stator 72 and the mover 31c having a heating part with a mover 31c movable along the Y direction; and first head-side cooling fans 81 each of which is fixedly installed in the vicinity of a stay position where the mover 31c stays for a longer time as compared with the other positions out of a plurality of positions where the mover 31c moves, and intensively cools the mover 31c at the stay position when the mover 31c is located at the stay position while the mover 31c is not cooled when the mover 31c is located at any position other than the stay position of the mover 31c. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a motor cooling device and a component mounting device, and more particularly, to a motor cooling device and a component mounting device including a cooling unit that cools a mover.

  2. Description of the Related Art Conventionally, an electronic component mounting apparatus and a moving coil linear motor having a cooling unit that cools a mover are known (for example, see Patent Documents 1 and 2).

  In Patent Document 1, a second linear motion device including a stator extending in the X direction and a mover movable in the X direction along the stator, and the entire second linear motion device are moved in the Y direction. And a mounting head attached to the mover of the second linear motion device and moved in the X direction and the Y direction by the first linear motion device and the second linear motion device, An electronic component mounting apparatus including a fan that cools the mover of the linear motion apparatus 2 is disclosed. In this electronic component mounting apparatus, the mounting head is moved to the mounting position (above the substrate) and the suction position (above the electronic component supply device) by moving the mounting head in the Y direction by the first linear motion device. Is configured to move. Further, the fan is fixedly installed on the stator in the vicinity of one end of the moving range of the mover (the range extending in the X direction) so as not to prevent the mounting head from moving in the X direction.

  In the above-mentioned Patent Document 2, a movable coil linear including a stator formed so as to extend in a predetermined direction, a mover movable in a predetermined direction along the stator, and an air compressor for supplying cooling air. A motor is disclosed. The stator is formed with an air supply passage extending in a predetermined direction along one side surface of the stator, and a communication hole extending from the air supply passage to the other side surface of the stator has a longitudinal direction (predetermined direction) of the stator. ) A plurality are formed at equal intervals over the entire area. In this movable coil linear motor, the cooling air supplied from the air compressor supplied to the air supply passage is disposed on the other side surface of the stator through a plurality of communication holes formed over the entire lengthwise direction of the stator. Supplied to the mover. Thereby, even when the mover is moved to any position within the moving range, the cooling air can be supplied to the mover.

JP 2008-108950 A Japanese Patent No. 3838314

  However, in Patent Document 1, the fan is installed in the vicinity of one end of the moving range of the mover (the range extending in the X direction), so the mover is moved to the other end of the moving range and When the distance to the mover becomes large, the cooling air from the fan cannot be sufficiently supplied to the mover. And when a needle | mover stays in the area | region of the other end part side of a moving range for a long time, since a needle | mover cannot fully be cooled, the cooling efficiency of the needle | mover by a fan will fall. There is a problem. Further, in this case, if the mover is sufficiently cooled by the fan, there is a problem that the fan (cooling unit) is increased in size (increased capacity).

  Further, in Patent Document 2, cooling air can be supplied to the mover even when the mover is moved to any position within the moving range, while cooling air from the air compressor extends over the entire length of the stator. Since all the plurality of formed communication holes are supplied to the other side surface of the stator, the cooling air from the air compressor is dispersed over the entire longitudinal direction of the stator, and as a result, the cooling efficiency of the mover by the air compressor There is a problem in that it decreases. In addition, if sufficient cooling air is supplied over the entire length of the stator, there is a problem that the air compressor (cooling unit) is increased in size (increased capacity).

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide cooling efficiency of the mover by the cooling unit while suppressing an increase in the size (large capacity) of the cooling unit. It is an object to provide a motor cooling device and a component mounting device that can improve the efficiency.

Means for Solving the Problems and Effects of the Invention

  In order to achieve the above object, a motor cooling device according to a first aspect of the present invention includes a stator and a mover having a heat generating part, and the mover can move along a predetermined direction. Among the plurality of positions where the mover moves, at least a part of the mover stays fixedly near the stay position where the mover stays for a longer time than other positions, and the mover moves to a position other than the stay position. A cooling unit that cools the mover intensively at the staying position when the mover is located at the staying position without cooling the mover when located.

  In the motor cooling device according to the first aspect of the present invention, as described above, among the plurality of positions where the mover moves, at least a part of the vicinity of the stay position where the mover stays for a longer time than other positions. When the mover is located at a position other than the stay position, the mover is not cooled. When the mover is located at the stay position, the mover is cooled intensively at the stay position. By providing the part, it is possible to cool the mover located at the staying position where the cooling part stays for a relatively long time from the vicinity of the mover. Unlike the case where the mover is cooled from a distance, the cooling efficiency of the mover by the cooling unit can be improved while suppressing the increase in size (capacity) of the cooling unit. Further, the cooling unit does not cool the mover when the mover is located at a position other than the staying position, and intensively cools the mover at the staying position only when the mover is located at the staying position. As a result, the cooling operation can be performed in a concentrated manner on the mover located at the staying position, so that the cooling efficiency of the mover by the cooling unit can be improved while suppressing an increase in the size of the cooling unit (capacity increase). Can do.

  In the motor cooling device according to the first aspect, preferably, cooling control that drives the cooling unit when the mover is located at the staying position and stops the cooling unit when the mover is located at a position other than the staying position. The unit is further provided. If comprised in this way, it can prevent that a cooling part continues driving wastefully in the state where a needle | mover is not in a residence position, Therefore The energy consumption for cooling a needle | mover can be reduced.

  In the motor cooling device according to the first aspect, preferably, the cooling unit is a cooling air supply device that intensively supplies cooling air to the mover moved to the staying position. With this configuration, the mover can be cooled by substituting the air around the mover having the heat generating portion having a higher temperature with the cooler air by the cooling air from the cooling air supply device. .

  In this case, the cooling air supply device is preferably configured to supply cooling air from below the mover toward the mover. If comprised in this way, the air around the needle | mover which has the heat generating part where temperature became high will blow the cooling wind from a cooling wind supply apparatus in the same direction that it moves upwards by natural convection, and temperature is high. The air around the mover can be replaced with air at a lower temperature, so the air around the mover can be more efficiently used than when cooling air is blown against the movement of air due to natural convection. Can be replaced.

  In the motor cooling device according to the first aspect, preferably, the motor mechanism unit is a linear motor, the stator is a linear motor stator made of a permanent magnet, and the mover is a coil as a heat generating unit. It is a mover of the linear motor. If comprised in this way, the needle | mover which consists of a coil as a heat generating part of a linear motor can be efficiently cooled with a cooling part.

  A component mounting apparatus according to a second aspect of the present invention includes a head unit for mounting electronic components, a stator, and a mover having a heat generating portion, and the head is moved by moving the mover along a predetermined direction. At least a part of the motor mechanism unit that moves the unit and the moving position of the mover is fixedly installed near the staying position where the mover stays for a longer time than other positions. And a cooling unit that cools the mover intensively at the stay position when the mover is located at the stay position without cooling the mover when the mover is located at the stay position.

  In the component mounting apparatus according to the second aspect of the present invention, as described above, of the plurality of positions where the mover that moves the head unit moves, the mover stays for a longer time than the other positions. When at least a part is fixedly installed in the vicinity and the mover is located at a position other than the staying position, the mover is not cooled, and when the mover is located at the staying position, the mover is concentrated at the staying position. By providing a cooling unit that cools the moving unit, the moving unit moving the head unit can cool the moving unit from the vicinity of the moving unit for a relatively long time at a staying position where the moving unit stays for a relatively long time. Unlike the case where the time is short or the mover is cooled from a distance of the mover, it is possible to improve the cooling efficiency of the mover by the cooling unit while suppressing the enlargement (large capacity) of the cooling unit. Can. In addition, when the mover that moves the head unit is located at a position other than the stay position by the cooling unit, the mover that moves the head unit stays at a stay position where the mover stays for a relatively long time without cooling. By cooling the mover intensively at the staying position only when it is located, the cooling operation can be concentrated on the mover located at the staying position. ), The cooling efficiency of the mover by the cooling unit can be improved.

  In the component mounting apparatus according to the second aspect, preferably, the staying position is a suction position where the head unit sucks an electronic component supplied by the component supply device, and the head unit waits while the electronic component is not mounted. This is a position where the mover is arranged when the head unit is moved to at least one of the standby position to be moved. According to this configuration, when the head unit is moved to at least one of the suction position and the standby position where the head unit stays for a longer time than the other positions, the mover can be cooled by the cooling unit. The mover can be cooled for a relatively long time. Further, if the mover is cooled when the head unit is moved to the suction position, the mover can be efficiently cooled even during the mounting operation. Also, if the mover is cooled when the head unit is moved to the standby position, the mover is concentrated for a relatively long time when the mounting operation is not performed for a long time such as when the board is transported or when parts are replaced. Therefore, the mover can be efficiently cooled.

  In this case, preferably, the head unit is configured to be movable in a first direction and a second direction intersecting the first direction when seen in a plan view, and the motor mechanism section has a movable element as a predetermined. The head unit is moved in the first direction by moving along the direction of the head, and the head unit is moved in the first direction to mount the head unit on at least one of the suction position and the standby position, and the electronic component. It is comprised so that it may arrange | position to the mounting position to perform. If comprised in this way, the movement of the motor mechanism part which moves a head unit to the 1st direction for arrange | positioning a head unit in a suction position, a standby position, and a mounting position among 1st direction and 2nd direction is possible. The child can be cooled efficiently.

It is a perspective view showing the whole surface mounter composition by one embodiment of the present invention. It is a top view which shows the whole structure of the surface mounter by one Embodiment of this invention. It is a side view which shows the whole structure of the surface mounting machine by one Embodiment of this invention. It is the schematic for demonstrating the position of the cooling fan of the surface mounter by one Embodiment of this invention. It is the schematic for demonstrating the structure of the cooling fan of the surface mounter by one Embodiment of this invention. It is a block diagram showing the whole surface mounter composition by one embodiment of the present invention. It is a flowchart for demonstrating control processing operation | movement of the cooling fan of the surface mounter by one Embodiment of this invention. It is a side view for demonstrating the modification of the surface mounter by one Embodiment of this invention.

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

  With reference to FIGS. 1-6, the structure of the surface mounter 100 by one Embodiment of this invention is demonstrated. The surface mounter 100 is an example of the “component mounting apparatus” in the present invention.

  As shown in FIGS. 1 and 2, the surface mounter 100 according to the present embodiment moves the first head unit 3 and the second head unit 4 in the X direction and the Y direction, respectively, so that the printed circuit board 1 (FIG. 2). Device) for mounting components on As shown in FIG. 2, the surface mounter 100 includes a substrate transport conveyor 2 extending in the X direction, and a first head unit 3 and a second head unit 4 that are movable in the XY direction above the substrate transport conveyor 2. ing. The substrate transport conveyor 2, the first head unit 3, and the second head unit 4 are each disposed on a base 5. A plurality of tape feeders 6 for supplying components are arranged in the X direction at both ends of the base 5 on the Y direction side. Further, on the base 5, a nozzle replacement device 5 a for replacing a suction nozzle 36 (46) attached to a mounting head portion 35 (45) to be described later of the first head unit 3 (second head unit 4). And a nozzle cleaning device 5b and component disposal boxes 5c and 5d for discarding defective components.

  The board transport conveyor 2 is configured to transport the printed circuit board 1 carried in from a transport path (not shown) in the X direction and place the printed circuit board 1 at a predetermined mounting position. Moreover, the board | substrate conveyance conveyor 2 has the function to carry out the printed circuit board 1 which the mounting operation was complete | finished. In the present embodiment, the printed circuit board 1 is carried in from the X1 direction side (upstream side) of the board conveyance conveyor 2 by a conveyance path (not shown), and is carried out to a conveyance path (not shown) on the X2 direction side (downstream side) after the mounting operation. Is done. As shown in FIG. 2, the substrate transport conveyor 2 includes three transport devices: an entrance transport device 21, a substrate transport device 22, and a substrate transport device 23.

  The inlet conveyance device 21 has a pair of conveyor portions 21a and 21b formed so as to extend in the X direction. In addition, the substrate transfer device 22 has a pair of conveyor portions 22a and 22b extending in the X direction on the extension line of the conveyor portions 21a and 21b of the entrance transfer device 21. In addition, the substrate transfer device 23 has a pair of conveyor portions 23 a and 23 b extending in the X direction on the extension lines of the conveyor portions 22 a and 22 b of the substrate transfer device 22. The board conveying conveyor 2 is configured to convey the printed board 1 in the X direction while supporting the printed board 1 by these conveyor sections (21a, 21b, 22a, 22b, 23a and 23b).

  As shown in FIG. 1, the first head unit 3 and the second head unit 4 have the same configuration. The first head unit 3 (second head unit 4) acquires components from a component take-out unit 6a (see FIG. 2) described later of the tape feeder 6 and also puts components on the printed circuit board 1 on the substrate transport conveyor 2. Has the function to implement. The components are small electronic components such as ICs, transistors, capacitors, and resistors.

  Further, as shown in FIGS. 1 and 2, the first head unit 3 and the second head unit 4 are configured to be linearly movable in the X direction along head unit support portions 31 and 41 extending in the X direction, respectively. Yes. Specifically, as shown in FIG. 2, the head unit support portion 31 (head unit support portion 41) includes a ball screw shaft 31a (41a) extending in the X direction and a servo motor 31b that rotates the ball screw shaft 31a (41a). (41b) and a guide rail (not shown) in the X direction. A field coil as a heat generating part disposed near the stator 72 (see FIG. 1) provided on the fixed rail part 70 described later at both ends of the head unit support part 31 (head unit support part 41). A movable element 31c (41c) is attached. Moreover, the needle | mover 31c (41c) has the rectangular shape extended in a Y direction seeing planarly, as shown in FIG. The mover 31c (41c) is planar when the first head unit 3 (second head unit 4) is moved to a position (residence position) when the first head unit 3 (second head unit 4) is disposed at a suction position described later. As seen, the first head side cooling fan 81 (second head) is disposed above a first head side cooling fan 81 (second head side cooling fan 82) having a substantially square shape and a later-described ventilation hole 5f having a rectangular shape. The side cooling fan 82) and the ventilation hole 5f are arranged so as to overlap each other. Specifically, the first head-side cooling fan 81 (second head-side cooling fan 82) and the ventilation hole are formed at a substantially central portion of the rectangular movable element 31c (41c) located at the staying position when seen in a plan view. 5f are arranged so as to overlap each other.

  The first head unit 3 has a ball nut 32 that is screwed to the ball screw shaft 31a, and the second head unit 4 has a ball nut 42 that is screwed to the ball screw shaft 41a. As a result, the first head unit 3 (second head unit 4) has the head unit support portion 31 (41) that is rotated by the ball screw shaft 31a (41a) by the servo motor 31b (41b) (X-axis motor). Is moved in the X direction.

  Each of the head unit support portions 31 and 41 is configured to be movable in the Y direction along a pair of fixed rail portions 70 extending in the Y direction so as to straddle the substrate transport conveyor 2. The pair of fixed rail portions 70 are configured to be commonly used for the head unit support portions 31 and 41, respectively. Further, as shown in FIGS. 1 to 3, the pair of fixed rail portions 70 includes a guide rail 71 that supports both end portions of the head unit support portion 31 (41) so as to be movable in the Y direction, and a fixed rail portion. A stator 72 (see FIG. 1) made of a plurality of permanent magnets arranged along the Y direction is provided on the inner side surface of 70. That is, the linear motor 7 (Y-axis motor) is configured by the mover 31c (41c) provided at both ends of the head unit support portion 31 (41) and the stator 72 of the fixed rail portion 70. Thus, the head unit support portion 31 (41) can move linearly in the Y direction along the guide rail 71 by supplying current to the mover 31c (41c) including the field coil (heat generating portion). is there. That is, the first head unit 3 (second head unit 4) can be moved in the XY directions on the base 5 by the head unit support portion 31 (41) and the linear motor 7. The linear motor 7 is an example of the “motor mechanism” in the present invention.

  Further, as shown in FIG. 4, in the first head unit 3 (second head unit 4), the movable element 31c (41c) moves in the Y direction when viewed from the side (when viewed from the X direction). As a result, the suction nozzle 36 (46), which will be described later, is configured to be moved to a suction position for acquiring a component from the component extraction portion 6a of the tape feeder 6 and a mounting area for mounting the component on the printed circuit board 1. ing. The first head unit 3 (second head unit 4) is moved to the suction position by the linear motor 7 when picking up the components, and then in the X direction along the head unit support portion 31 (41). By being moved, the suction nozzle 36 (46) is configured to be disposed above the predetermined component extraction portion 6a. When mounting components, the first head unit 3 (second head unit 4) is moved to the mounting area by the linear motor 7 and then moved in the X direction along the head unit support portion 31 (41). By moving, the suction nozzle 36 (46) is arranged at a predetermined mounting position in the mounting area.

  Here, in the present embodiment, the first head unit 3 (second head unit 4) is moved in the Y2 (Y1) direction after first sucking a plurality of components at the suction position in the movement in the Y direction. The component is moved from the suction position into the mounting area while holding a plurality of components. And the 1st head unit 3 (2nd head unit 4) is comprised so that a some component may be each mounted in a predetermined mounting position, repeating the movement of a Y direction within a mounting area | region. When the mounting operation is completed, the first head unit 3 (second head unit 4) is moved back in the Y1 (Y2) direction to return to the suction position again from the mounting area and stays in the suction position. Execute the adsorption work. In such a series of operations in the Y direction of the first head unit 3 (second head unit 4), for example, when 10 parts are picked up at a time, the first head unit 3 (second head unit 4) It stays at the suction position for about 1 to about 2 seconds, and stays at a predetermined mounting position for about 0.1 to about 0.2 seconds for mounting each component. That is, in this embodiment, in the movement in the Y direction, the first head unit 3 (second head unit 4) stays at the suction position for a longer time than other positions. In other words, in the mover 31c (41c) of the linear motor 7, the first head unit 3 (second head unit 4) is arranged at the suction position among a plurality of positions within the moving range along the fixed rail portion 70. In this case, the liquid stays at a position (retention position) at a time longer than that at other positions.

  Further, in this embodiment, when the first head unit 3 (second head unit 4) is in an operation waiting state (a standby state in which no mounting operation is performed), such as when parts are replaced or the printed board 1 is replaced. The first head unit 3 (second head unit 4) is configured to wait for operation after being moved to the suction position. That is, in the present embodiment, when the first head unit 3 (second head unit 4) moves in the Y direction, the suction position and the standby position of the first head unit 3 (second head unit 4) are the same position. . In the present embodiment, since the operation waiting state continues for about 3 to about 4 seconds, the first head unit 3 (second head unit 4) stays at the standby position for a longer time than other positions. It will be. For this reason, in the present embodiment, the first head unit 3 (second head unit 4) stays at the suction position (standby position) for a longer time than other positions in the Y direction.

  As shown in FIG. 2, the first head unit 3 and the second head unit 4 are each provided with ten mounting head portions 35 and 45 arranged in a row in the X direction. A suction nozzle 36 (46) for sucking and mounting components is attached to the tip of each mounting head portion 35 (45) so as to protrude downward. Further, a negative pressure generator 351 (see FIG. 6) for generating a negative pressure state at the tip of the suction nozzle 36 (46) and a suction nozzle 36 (46) are provided in the mounting head portion 35 (45) in the vertical direction. A lifting device such as a servomotor 352 (Z-axis motor) (see FIG. 6) that moves in the (Z direction) is provided. The suction nozzle 36 (46) of each mounting head portion 35 (45) can suck and hold components supplied from the tape feeder 6 by generating a negative pressure state at the tip. The ten mounting head portions 35 (45) are configured to be able to individually switch between generation / release of the negative pressure state and generation / release of the positive pressure state.

  In addition, the suction nozzle 36 (46) of each mounting head portion 35 (45) is configured to carry components and the like while being raised with respect to the first head unit 3 (second head unit 4). ing. Further, the suction nozzles 36 (46) of the respective mounting head portions 35 (45) are sucked from the tape feeder 6 and printed with the parts lowered with respect to the first head unit 3 (second head unit 4). It is configured to be mounted on the substrate 1. Further, the mounting head portion 35 (45) is configured to be able to rotate the suction nozzle 36 (46) itself around its axis by a nozzle rotating device such as a servo motor 353 (R-axis motor) (see FIG. 6). Yes. Thereby, in the surface mounting machine 100, it is possible to adjust the attitude | position (direction in a horizontal surface) of the components hold | maintained at the front-end | tip of a nozzle by rotating the adsorption nozzle 36 (46).

  In addition, as shown in FIG. 2, on the side portion on the X2 direction side of the first head unit 3 and the side portion on the X1 direction side of the second head unit 4, the parts sucked by the suction nozzles 36 and 46, respectively. Component imaging devices 37 and 47 for detecting the posture are attached. The component imaging device 37 (47) is configured to detect the posture of the component using a line sensor. The component imaging device 37 (47) is configured to image the lower surface of the component held by the suction nozzle 36 (46) from below. The component imaging device 37 (47) is movable in the X direction (the direction in which the ten mounting head portions 35 (45) are arranged) with respect to the first head unit 3 (second head unit 4). It is attached. Thereby, the component imaging device 37 (47) can sequentially image the lower surface of the component held by the ten suction nozzles 36 (46) of the first head unit 3 (second head unit 4) from the lower direction. Is possible.

  Further, board imaging devices 38 and 48 are attached to the side portion of the first head unit 3 on the X1 direction side and the side portion of the second head unit 4 on the X2 direction side, respectively. The board imaging device 38 (48) is configured by a CCD area camera, and is configured to capture the downward direction from the first head unit 3 (second head unit 4). The board imaging device 38 (48) is configured to acquire a reference point of the mounting position of the component by imaging a board mark (not shown) provided on the surface of the printed board 1 when the component is mounted. Yes.

  Here, in the present embodiment, the surface mounter 100 further includes a cooling device 8 (see FIG. 6) for cooling the mover 31 c (41 c) of the linear motor 7. As shown in FIGS. 1 to 3, the cooling device 8 includes a pair of first head side cooling fans 81 and a pair of second head side cooling fans 82. Further, the pair of first head side cooling fans 81 (second head side cooling fans 82) have a substantially square shape when seen in a plan view, and the length of one side is the Y direction of the mover 31c (41c). It is formed to be shorter than the length. The pair of first head-side cooling fans 81 (second head-side cooling fans 82) are each configured to support a pair of fixed rail portions 70 on the base 5, as shown in FIGS. It is fixedly attached to the support portion 5e. The pair of first head-side cooling fans 81 (second head-side cooling fans 82) are overlapped with the pair of fixed rail portions 70 in plan view, as shown in FIGS. It is arranged below the pair of fixed rail portions 70. Specifically, as shown in FIG. 4, each of the pair of first head side cooling fans 81 (second head side cooling fans 82) has the first head unit 3 (second head unit 4) disposed at the suction position. And provided near the lower surface of the pair of movable elements 31c (41c) below the position where the pair of movable elements 31c (41c) is disposed. More specifically, as shown in FIGS. 2 and 5, a ventilation hole 5 f is formed at a portion of the support portion 5 e where the first head side cooling fan 81 (second head side cooling fan 82) is attached. . Further, the vent hole 5f has a rectangular shape when seen in a plan view, and is formed such that the length in the Y direction is shorter than the length in the Y direction of the mover 31c (41c). Specifically, the length of the vent hole 5f in the Y direction is approximately 1/3 times the length of the movable element 31c (41c) in the Y direction. Further, the vent hole 5f has a movable element 31c (41c) that has been moved to a position (residence position) when the first head unit 3 (second head unit 4) is disposed at the suction position in plan view. ) Are arranged so as to be located at substantially the center. The pair of first head-side cooling fans 81 (second head-side cooling fans 82) are respectively movable elements 31c (when the first head unit 3 (second head unit 4) is disposed at the suction position. The cooling air can be supplied from the lower side of 41c) through the ventilation hole 5f. Each of the first head side cooling fan 81 and the second head side cooling fan 82 is an example of the “cooling unit” in the present invention.

  The pair of first head-side cooling fans 81 (second head-side cooling fans 82) are respectively movable elements 31c (when the first head unit 3 (second head unit 4) is disposed at the suction position. 41c) at the approximate center in the Y direction. Thereby, the cooling air supplied from the first head side cooling fan 81 (second head side cooling fan 82) passes through the ventilation hole 5f and then along the lower surface of the mover 31c (41c) in the X and Y directions. Spread almost evenly. As a result, the cooling air from the first head side cooling fan 81 (second head side cooling fan 82) spreads over the entire area of the movable element 31c (41c), so that the entire movable element 31c (41c) can be efficiently cooled. It becomes possible. Further, with the above-described configuration, the first head side cooling fan 81 (second head side cooling fan 82) is movable when the movable element 31c (41c) is located at a position other than the staying position. The movable element 31c (41c) can be intensively cooled from the lower surface side only when the movable element 31c (41c) is located at the staying position without cooling. The motor cooling mechanism including the linear motor 7 and the cooling device 8 is an example of the “motor cooling device” in the present invention.

  As shown in FIG. 6, the surface mounter 100 further includes a control device 101, and is configured such that each operation of the surface mounter 100 is controlled by the control device 101. The control device 101 includes a main control unit 102, a drive control unit 103, an image processing unit 104, a valve control unit 105, and a storage unit 106. The control device 101 also includes a display unit 107 such as a liquid crystal display device and an input unit 108 such as a keyboard. The main control unit 102 is an example of the “cooling control unit” in the present invention.

  The main control unit 102 includes a CPU that executes logical operations. The main control unit 102 is connected to the first head unit 3, the second head unit 4, and the substrate transport conveyor 2 via the drive control unit 103 based on a mounting program (not shown) stored in the ROM of the storage unit 106. Are configured to control operations of the inlet transfer device 21, the substrate transfer device 22, the substrate transfer device 23, and the like. Further, the main control unit 102 is configured to control the operation of the cooling device 8 based on the mounting program. Specifically, as will be described later, the main control unit 102 controls the driving / stopping of the first head side cooling fan 81 based on the position information of the movement destination of the first head unit 3, and the second head unit 4. The second head side cooling fan 82 is controlled to be driven / stopped based on the position information of the movement destination. The main control unit 102 controls the component imaging device 37 (47) and the board imaging device 38 (48) of the first head unit 3 (second head unit 4) via the image processing unit 104, respectively. It is configured. The main control unit 102 is configured to control a negative pressure generator 351 provided in the first head unit 3 (second head unit 4) via the valve control unit 105. Thereby, the main control unit 102 can control the suction operation of the component by the suction nozzle 36 (46). Further, the main control unit 102 is configured to read the substrate data 106a stored in the storage unit 106 and acquire the size and the substrate mark position of the printed circuit board 1 to be mounted.

  Based on the control signal output from the main control unit 102, the drive control unit 103 is a motor (servo motor 31b (X-axis motor), linear motor 7 (Y-axis motor), suction nozzle) of each part of the first head unit 3. The servo motor 352 (Z-axis motor) of the lift device 36 and the servo motor 353 (R-axis motor) of the nozzle rotation device of the suction nozzle 36 are controlled. Further, the drive control unit 103 is configured to control the driving of the motors of the respective units of the second head unit 4 in the same manner as the first head unit 3.

  Further, the drive control unit 103 is configured to control driving of motors (drive motor, rotation motor, and transfer motor) of each unit of the substrate transfer conveyor 2 based on a control signal output from the main control unit 102. ing. Signals from the encoders of these servo motors are output to the main control unit 102 via the drive control unit 103.

  The drive control unit 103 is configured to control driving of the first head side cooling fan 81 and the second head side cooling fan 82 based on a control signal output from the main control unit 102.

  The image processing unit 104 is configured to read out an imaging signal at a predetermined timing from the component imaging device 37 (47) and the board imaging device 38 (48) based on a control signal output from the main control unit 102. ing. The image processing unit 104 is configured to generate image data suitable for recognizing components and board marks by performing predetermined image processing on the read image pickup signal.

  The storage unit 106 includes a ROM (Read Only Memory) that stores programs for controlling the CPU, a RAM (Random Access Memory) that temporarily stores various data during operation of the apparatus, and the like. Further, the storage unit 106 stores board data 106a such as dimensions and reference mark positions of the printed circuit board 1 to be mounted, and a mounting program (not shown) for manufacturing a predetermined printed circuit board 1. Yes.

  The tape feeder 6 holds a reel (not shown) around which a tape holding a plurality of components at a predetermined interval is wound. The tape feeder 6 is configured to send out a tape for holding a component by rotating a reel. And the tape feeder 6 is comprised so that components may be supplied from the component extraction part 6a of the front-end | tip of the tape feeder 6 by sending out a tape.

  Next, the control processing of the first head side cooling fan 81 and the second head side cooling fan 82 by the main control unit 102 will be described with reference to FIG.

  First, in step S <b> 1, the main control unit 102 acquires position information on the next movement destination of the first head unit 3. Specifically, the main control unit 102 acquires position information from a mounting program (not shown) stored in the storage unit 106. In step S2, the main control unit 102 determines whether or not the acquired position in the Y direction of the next movement destination of the first head unit 3 is the suction position (standby position). That is, the main control unit 102 determines whether or not the next movement destination of the mover 31c is a staying position where the mover 31c stays longer than other positions.

  When the movement destination of the first head unit 3 in the Y direction is not the suction position (standby position), the main control unit 102 stops the first head side cooling fan 81 with respect to the drive control unit 103 in step S3. A control signal for transmitting is transmitted. At this time, when the first head side cooling fan 81 is not originally operated, the stopped state of the first head side cooling fan 81 is continued, and when it is operated, the first head side cooling fan 81 is stopped. The On the other hand, when the movement destination of the first head unit 3 in the Y direction is the suction position (standby position), the main control unit 102 makes the first head side cooling fan 81 to the drive control unit 103 in step S4. A control signal for driving is transmitted. At this time, if the first head side cooling fan 81 was originally operating, the operating state of the first head side cooling fan 81 is continued, and if not, the first head side cooling fan 81 is driven. The

  Thereafter, for the second head side cooling fan 82 as well as the first head side cooling fan 81, in step S5, the main control unit 102 acquires the position information of the next movement destination of the second head unit 4. In step S6, the main control unit 102 determines whether or not the acquired position in the Y direction of the next movement destination of the second head unit 4 is the suction position (standby position). That is, the main control unit 102 determines whether or not the next moving destination of the mover 41c is a staying position where the mover 41c stays longer than other positions.

  If the destination of the second head unit 4 in the Y direction is not the suction position (standby position), the main control unit 102 stops the second head side cooling fan 82 with respect to the drive control unit 103 in step S7. A control signal for transmitting is transmitted. On the other hand, when the movement destination of the second head unit 4 in the Y direction is the suction position (standby position), the main control unit 102 sends the second head side cooling fan 82 to the drive control unit 103 in step S8. A control signal for driving is transmitted. As described above, the first head side cooling fan 81 (second head side cooling fan 82) is reached before reaching the destination according to the position of the next destination in the Y direction of the first head unit 3 (second head unit 4). Unlike the case of starting the driving of the first head side cooling fan 81 (second head side cooling fan 82) after the mover 31c (41c) is moved to the cooling position, the driving destination is moved to the destination. Since sufficient cooling air can be blown at the time of arrival, the cooling efficiency of the mover 31c (41c) can be further improved.

  In the present embodiment, as described above, among the plurality of positions where the mover 31c (41c) moves, the mover 31c (41c) is fixed in the vicinity of the stay position where the mover 31c (41c) stays for a longer time than the other positions. When the mover 31c (41c) is located at a position other than the staying position, the mover 31c (41c) is not cooled and the mover 31c (41c) is located at the staying position. 41c) is provided with a first head-side cooling fan 81 (second head-side cooling fan 82) that intensively cools the head 41c) at the staying position, so that the first head-side cooling fan 81 (second head-side cooling fan 82) Since the movable element 31c (41c) located at the retention position where the liquid stays for a long time can be cooled for a relatively long time from the vicinity of the movable element 31c (41c), the cooling time is short. Unlike the case where the mover 31c (41c) is cooled from the distance of the mover 31c (41c), the first head side cooling fan 81 (second head side cooling fan 82) is increased in size (increased capacity). While being suppressed, the cooling efficiency of the movable element 31c (41c) by the first head side cooling fan 81 (second head side cooling fan 82) can be improved. Further, when the movable element 31c (41c) is located at a position other than the staying position, the movable element 31c (41c) is moved without being cooled by the first head-side cooling fan 81 (second head-side cooling fan 82). Only when the child 31c (41c) is located at the staying position, the mover 31c (41c) is intensively cooled at the staying position to concentrate and cool the mover 31c (41c) located at the staying position. Since wind can be supplied, the first head side cooling fan 81 (second head side cooling) is suppressed while suppressing the increase in size (capacity) of the first head side cooling fan 81 (second head side cooling fan 82). The cooling efficiency of the mover 31c (41c) by the fan 82) can be improved.

  In the present embodiment, when the mover 31c (41c) is located at the staying position, the first head side cooling fan 81 (second head side cooling fan 82) is driven, and the mover 31c (41c) is placed at the staying position. By providing the main control unit 102 for stopping the first head side cooling fan 81 (second head side cooling fan 82) when located at a position other than the position, the movable element 31c (41c) is not in the staying position. Since it is possible to prevent the one-head side cooling fan 81 (second head-side cooling fan 82) from being driven unnecessarily, it is possible to reduce energy consumption for cooling the mover 31c (41c).

  In the present embodiment, the first head-side cooling fan 81 (second head-side cooling fan 82) is supplied with cooling air from below the mover 31c (41c) toward the mover 31c (41c). By configuring, the mover whose temperature is increased by blowing cooling air in the same direction as the air around the mover 31c (41c) having the heat generating portion whose temperature is increased moves upward due to natural convection. Since the air around 31c (41c) can be replaced with air having a lower temperature, the mover 31c (41c) can be more efficiently compared with the case where the cooling air is blown against the movement of air by natural convection. The surrounding air can be replaced, and as a result, the mover 31c (41c) can be cooled more efficiently.

  Further, in the present embodiment, the first head unit 3 (second head unit 4) is the suction position where the electronic component supplied by the tape feeder 6 is sucked, and the first head is not mounted while the electronic component is not mounted. The position where the mover 31c (41c) is disposed when the first head unit 3 (second head unit 4) is moved to the standby position where the unit 3 (second head unit 4) waits is set as the retention position. When the first head unit 3 (second head unit 4) is moved to a suction position (standby position) where the first head unit 3 (second head unit 4) stays longer than other positions, the first head side cooling fan 81 (second head side) Since the movable element 31c (41c) can be cooled by the cooling fan 82), the movable element 31c (41c) can be cooled for a relatively long time. In addition, by cooling the mover 31c (41c) when the first head unit 3 (second head unit 4) is moved to the suction position, the mover 31c (41c) is efficiently cooled even during the mounting operation. can do. In addition, when the first head unit 3 (second head unit 4) is moved to the standby position, the movable element 31c (41c) is cooled, so that it can be mounted for a long time such as when parts are replaced or when the printed circuit board 1 is replaced. When the operation is not performed, the movable element 31c (41c) can be intensively cooled for a relatively long period of time, so that the movable element 31c (41c) can be efficiently cooled.

  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, an example in which the motor cooling device of the present invention is applied to a surface mounter has been shown. However, the present invention is not limited to this, and the motor cooling device is disclosed in Japanese Patent Laid-Open No. 2002-162439. Application to parts testing equipment (IC handler), inspection equipment disclosed in Japanese Patent Application Laid-Open No. 2007-2221074, etc., and other devices other than surface mounters such as printing machines disclosed in Japanese Patent Application Laid-Open No. 2001-96717 Also good. At this time, when applied to a component testing device (IC handler) and an inspection device, the motor cooling device of the present invention is applied to the moving mechanism of the head unit for moving the component, and is applied to a printing press. The motor cooling device of the present invention may be applied to a stage moving mechanism or a squeegee moving mechanism. In the case of a printing machine, the staying position where the mover stays for a longer time than other positions is the position where the mover is placed at the time of component inspection in the case of a component testing device (IC handler) and inspection device. The position may be the position where the mover is arranged during printing.

  Moreover, in the said embodiment, although the linear motor comprised by the stator which consists of a permanent magnet and the mover which consists of a field coil as a heat generating part was shown as an example of a motor mechanism part, this invention is not limited to this. First, as shown in FIG. 8, the motor mechanism portion is composed of a stator made up of a ball screw shaft 272 fixedly provided on a fixed rail portion and a mover made up of a hollow motor 231c (241c) as a heat generating portion. May be.

  Moreover, in the said embodiment, although the cooling fan was shown as an example of a cooling part, this invention is not restricted to this, For example, if it is possible to cool a needle | mover, it will contact | abut a needle | mover by contact | abutting a needle | mover. It may be a cooling element for cooling.

  In the above embodiment, an example of a configuration in which the cooling fan is disposed in the vicinity of the mover positioned at the staying position has been described. However, the present invention is not limited thereto, and the cooling fan can be cooled from the vicinity of the mover. For example, the structure which sprays the cooling air from a cooling fan on the needle | mover located in a residence position via a pipe may be sufficient, for example. In this case, it is not necessary to place the cooling fan in the vicinity of the mover located at the staying position among the cooling parts composed of the cooling fan and the pipe, and only the pipe outlet as a part of the cooling part is movable. What is necessary is just to arrange | position to the residence position of a child.

  Moreover, in the said embodiment, although the example of the structure which applies a motor cooling device to the linear motor of the moving mechanism of Y direction was shown, this invention is not restricted to this, A linear motor or a hollow motor is used as a moving mechanism of X direction. The motor cooling device may be applied to the moving mechanism in the X direction.

  In the above embodiment, an example of a configuration in which the suction position of the head unit and the standby position are the same position has been shown. However, the present invention is not limited to this, and the suction position of the head unit and the standby position are different. There may be.

3 First head unit 4 Second head unit 7 Linear motor (motor mechanism section)
31c, 41c Movable element 72 Stator 81 First head side cooling fan (cooling unit, cooling air supply device)
82 Second head side cooling fan (cooling unit, cooling air supply device)
100 Surface mounter (component mounter)
102 Main control unit (cooling control unit)

Claims (8)

A motor mechanism including a stator and a mover having a heat generating portion, the mover being movable along a predetermined direction;
Among the plurality of positions where the mover moves, at least a part of the mover is fixedly installed in the vicinity of a stay position where the mover stays for a longer time than other positions. A motor cooling device comprising: a cooling unit that cools the mover intensively at the stay position when the mover is located at the stay position without cooling the mover when the position is located.   The cooling control part which drives the cooling part when the mover is located in the stay position and stops the cooling part when the mover is located at a position other than the stay position. The motor cooling device described in 1.   The motor cooling device according to claim 1 or 2, wherein the cooling unit is a cooling air supply device that intensively supplies cooling air to the mover moved to the staying position.   The motor cooling device according to claim 3, wherein the cooling air supply device is configured to supply the cooling air from below the movable element toward the movable element. The motor mechanism is a linear motor,
The stator is a stator of the linear motor made of a permanent magnet,
The motor cooling device according to any one of claims 1 to 4, wherein the mover is a mover of the linear motor including a coil as the heat generating unit. A head unit for mounting electronic components;
A motor mechanism that includes a stator and a mover having a heat generating portion, and moves the head unit by moving the mover along a predetermined direction;
Among the plurality of positions where the mover moves, at least a part of the mover is fixedly installed in the vicinity of a stay position where the mover stays for a longer time than other positions. A component mounting apparatus comprising: a cooling unit that cools the mover intensively at the stay position when the mover is located at the stay position without cooling the mover when the position is located.   The staying position is at least one of a suction position where the head unit sucks the electronic component supplied by a component supply device, and a standby position where the head unit waits while the electronic component is not mounted. The component mounting apparatus according to claim 6, wherein the mover is disposed at a position when the head unit is moved. The head unit is configured to be movable in a first direction and a second direction intersecting the first direction when seen in a plan view.
The motor mechanism unit moves the head unit in the first direction by moving the mover along the predetermined direction, and moves the head unit in the first direction by moving the head unit in the first direction. The component mounting apparatus according to claim 7, wherein the head unit is configured to be disposed at at least one of the suction position and the standby position and a mounting position for mounting the electronic component.

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