JPWO2017125996A1 - Parts mounting machine - Google Patents

Abstract

  The mounting head (14) has an opening / closing mechanism (25) for enlarging / reducing the interval between the two component pickup members (13), a state for supplying negative pressure to each component pickup member, and a state for supplying positive pressure. And a negative pressure / positive pressure switching device (26). Each component pickup member functions as a claw that picks up a component with the component interposed therebetween, and also functions as a suction nozzle that is formed in a hollow shape and sucks and picks up the component at the tip. When the component pickup member is used as a crow, the two component pickup members are opened and closed by the opening / closing mechanism (25), and the components are picked up by sandwiching the components between the two component pickup members. When the component pickup member is used as a suction nozzle, the negative pressure / positive pressure switching device (26) switches to a state where negative pressure is supplied to the component pickup member, and the component is sucked by the tip of the component pickup member.

Description

  The present invention relates to a component mounting machine that has both a function as a claw (chuck) for picking up a component and a function as a suction nozzle for picking up and picking up the component.

  In general, a component mounting machine is configured such that a component supplied by a component supply device is sucked by a suction nozzle and mounted on a circuit board. Since there are some, such parts are sandwiched between a pair of crows (chucks) and picked up and mounted on a circuit board. For example, a component mounting machine described in Patent Document 1 (Japanese Patent Laid-Open No. 2001-196996) is configured to attach a suction nozzle and a chuck device to a mounting head in a replaceable manner, depending on the size and shape of the component. The suction nozzle and the chuck device are exchanged and attached to the mounting head.

JP 2001-196696 A

  However, in the configuration of Patent Document 1 described above, it is necessary to perform a troublesome work of replacing a plurality of component pickup members (suction nozzles and claw) attached to the mounting head according to the size and shape of the components. There was a drawback that it took time to work, and the productivity was reduced accordingly.

  Therefore, the problem to be solved by the present invention is that a plurality of component pick-up members (suction nozzles and claws) held by the mounting head can be sucked without performing a troublesome work of replacing them according to the size and shape of the components. It is an object of the present invention to provide a component mounting machine that can be used by switching the function as a nozzle and the function as a claw, and can improve productivity.

  In order to solve the above problems, the present invention provides a mounting head that moves between a component pickup position for picking up a component supplied by a component supply device and a component mounting position for mounting the component on a circuit board, and the mounting A plurality of component pick-up members attached to the head, each of the plurality of component pick-up members function as a claw for picking up with the component sandwiched therebetween, and is formed in a hollow shape to pick up and pick up the component at the tip An opening / closing mechanism configured to open and close the plurality of component pickup members when the plurality of component pickup members are used as a claw, and the plurality of component pickup members configured to function as a suction nozzle. Is used as a suction nozzle, a negative pressure is applied to each of the plurality of component holding members. A negative pressure supply passage that is characterized in that the Q-axis rotating mechanism for rotating each of the plurality of component pick-up member for the component suction angle modification is provided.

  In this configuration, since the plurality of component pickup members attached to the mounting head are each formed in a hollow shape and function as a suction nozzle, and are configured to open and close and also function as a claw, the mounting head Switch between the function as a suction nozzle and the function as a crow, without having to perform the troublesome task of replacing multiple parts pick-up members (suction nozzle and claw) attached to the unit according to the size and shape of the part. This can improve productivity. In addition, since each component pickup member is configured to use both the suction nozzle and the claw, it is possible to avoid an increase in the size of the mounting head and to achieve a compact configuration compared to a configuration in which the suction nozzle and the claw are provided separately. can do. When the component pickup member is used as a suction nozzle, it can be mounted on the circuit board by correcting the shift of the suction angle of the component by the Q axis rotation mechanism.

  Further, according to the present invention, at least one of the plurality of component pickup members is formed with a plurality of component clamping surfaces having different shapes along the rotation direction, and the component pick-up is performed by the Q-axis rotation mechanism when used as a claw. By rotating the member, it is preferable to switch the component clamping surface that sandwiches the component from the plurality of component clamping surfaces according to the shape of the component to be sandwiched. In this way, when the component pickup member is used as a crow, the component clamping surface of the component pickup member can be switched to a component clamping surface suitable for the shape of the component to be sandwiched. Can be stably clamped, and the component can be prevented from being dropped or displaced while the mounting head is moving.

  Further, in the present invention, when the plurality of component pickup members are used as suction nozzles, the interval between the plurality of component pickup members is changed by the opening / closing mechanism so that the components attracted to the plurality of component pickup members do not interfere with each other. You may make it let it. In this way, it is possible to increase the size of a component that can be attracted to the plurality of component pick-up members without interfering with each other, and it is possible to prevent component mis-sucking or abnormal suction posture due to interference between components. Thus, even relatively large parts can be stably adsorbed.

  Furthermore, in the present invention, the plurality of component pickup members may be attached to the mounting head in a replaceable manner. The range (size, shape, weight, etc.) of components that can be picked up by the same component pickup member is limited, so when picking up a component that is out of that range, the component pickup member attached to the mounting head is attached to the component. The part can be picked up by replacing it with a pickable part pick-up member.

FIGS. 1A and 1B are front views of the mounting head for explaining the opening / closing operation of the first example when the component pickup member in the embodiment of the present invention is used as a claw. FIGS. 2A and 2B are front views of the mounting head for explaining the opening / closing operation of the second example when the component pickup member is used as a claw. FIGS. 3A and 3B are front views of the mounting head for explaining the opening / closing operation of the third example when the component pickup member is used as a claw. FIGS. 4A and 4B are front views of the mounting head for explaining two usage examples when the component pickup member is used as a suction nozzle. 5A and 5B are bottom views of different component pickup members. FIG. 6 is a block diagram showing the configuration of the control system of the component mounting machine.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment embodying a mode for carrying out the present invention will be described with reference to the drawings.
First, the configuration of the component mounting machine will be schematically described.

  The component mounting machine is supplied by a component feeder 11 (see FIG. 6) such as a tape feeder, a tray feeder, and a bulk feeder, a conveyor 12 that carries in and out a circuit board (not shown), and a component feeder 11. A mounting head 14 in which two component pickup members 13 for picking up components are replaceably mounted, a component pick-up position for picking up the components supplied by the component supply device 11 to the mounting head 14, and the components are mounted on a circuit board. A head moving mechanism 15 that moves in the XY direction (horizontal direction) between the component mounting position and the camera that picks up the component picked up by the component pickup member 13 from the lower surface side while moving the component picked up by the component pickup member 13 to the component mounting position. 16 etc. are provided.

  On the other hand, the mounting head 14 is provided with a holder 21 for holding the component pickup member 13 in a replaceable manner so as to be rotatable around an R axis extending in the vertical direction. The holder 21 is centered on the R axis. An R-axis drive mechanism 22 is provided for rotation of the two parts, and the two component pickup members 13 are circular orbits around the R-axis by rotating the holder 21 around the R-axis by the R-axis drive mechanism 22. To turn.

  In addition, the mounting head 14 is provided with two Q-axis rotation mechanisms 23 that rotate each of the two component pickup members 13 about the Q-axis, and each of the two component pickup members 13 A Z-axis drive mechanism 24 that moves up and down individually is provided. Further, the mounting head 14 is provided with an opening / closing mechanism 25 that enlarges / reduces (opens / closes) the interval between the two component pickup members 13. The R-axis drive mechanism 22 and the Q-axis rotation mechanism 23 are each configured by using an electric actuator such as a motor as a drive source, and the Z-axis drive mechanism 24 and the opening / closing mechanism 25 respectively drive an electric actuator such as a motor or an air cylinder. Configured as a source.

  Further, the mounting head 14 is provided with a negative pressure supply path (not shown) for supplying a negative pressure to each of the two component pickup members 13, and each component pickup member 13 is passed through this negative pressure supply path. A negative pressure / positive pressure switching device 26 is provided for switching between a state in which a negative pressure is supplied from a negative pressure source and a state in which a positive pressure (or atmospheric pressure) is supplied from the positive pressure source. The negative pressure / positive pressure switching device 26 is configured using an electromagnetic valve or the like.

  In the present embodiment, each component pickup member 13 functions as a claw (chuck) that picks up a component while sandwiching the component, and is configured to function as a suction nozzle that is formed in a hollow shape and sucks and picks up the component at the tip. Has been. As shown in FIGS. 5 (a) and 5 (b), at least one of the two component pickup members 13 (two in this embodiment) is formed with a plurality of component clamping surfaces having different shapes along the rotation direction. When using as a crow, the component pick-up member 13 is rotated by the Q-axis rotation mechanism 23 to switch the component sandwiching surface that sandwiches the component from a plurality of component sandwiching surfaces according to the shape of the sandwiched component. I am doing so. For example, in the example of FIG. 5A, two component clamping surfaces, a planar component clamping surface and an arc-shaped convex component clamping surface, are formed on the lower outer periphery of the component pickup member 13. By rotating 180 °, the component clamping surface that sandwiches the component can be switched. In the example of FIG. 5 (b), on the lower outer periphery of the component pickup member 13, there are four planar component clamping surfaces, two arc convex component clamping surfaces with different radii of curvature, and arc concave component clamping surfaces. Two component clamping surfaces are formed, and each time the component pickup member 13 is rotated by 90 °, the component clamping surfaces for clamping the components can be switched.

  The control device 31 of the component placement machine includes a component supply device 11, a conveyor 12, a head moving mechanism 15, an R axis drive mechanism 22, a Q axis rotation mechanism 23, a Z axis drive mechanism 24, an opening / closing mechanism 25, and a negative pressure / positive pressure switch. When the operation of the device 26 and the like is controlled and the two component pickup members 13 are used as a crow, the mounting head 14 is moved to the component pickup position by the head moving mechanism 15, and the two components are moved by the opening / closing mechanism 25. With the pickup member 13 open, the two component pickup members 13 are lowered by the Z-axis drive mechanism 24 so that the components are positioned between the two component pickup members 13 as shown in FIGS. In this state, the two component pickup members 13 are closed by the opening / closing mechanism 25 to pick up the components with the components sandwiched between the two component pickup members 13.

  At this time, one or two component pickup members 13 are rotated by the Q-axis rotation mechanism 23 in accordance with the shape of the component sandwiched between the two component pickup members 13, so that the lower outer periphery of the component pickup member 13 is rotated. The component clamping surface that sandwiches the component is switched from among the plurality of component clamping surfaces, and the component is sandwiched between the two component pickup members 13 and picked up. 2 is a usage example in which only one component pickup member 13 is rotated, and FIG. 3 is a usage example in which two component pickup members 13 are rotated together.

  After picking up the component, the control device 31 of the component mounting machine moves the mounting head 14 above the camera 16 by the head moving mechanism 15 and images the component sandwiched between the two component pickup members 13 with the camera 16. After recognizing the deviation of the clamping position and clamping angle (orientation) of the component, the component pickup member 13 is turned by the R-axis drive mechanism 22 to correct the clamping angle deviation of the component, and The mounting head 14 is moved so as to correct the shift of the clamping position of the component, and the component is mounted on the circuit board. When the two component pickup members 13 are used as a claw, the negative pressure / positive pressure switching device 26 opens each component pickup member 13 to atmospheric pressure (a state in which no negative pressure suction force is generated). Maintained.

  On the other hand, when the two component pickup members 13 are used as suction nozzles, the control device 31 of the component mounting machine moves the mounting head 14 to the component pickup position by the head moving mechanism 15 and negative pressure / positive pressure. The switching device 26 switches to a state in which a negative pressure is supplied to the component pickup member 13, and the component pickup member 13 is lowered by the Z-axis drive mechanism 24, and the component is picked up at the tip of the component pickup member 13 as shown in FIG. 4. Adsorb and pick up. At this time, as shown in FIG. 4B, when the dimensions of the parts in the XY direction are large, the two parts are separated by the opening / closing mechanism 25 so that the parts attracted by the two parts pickup members 13 do not interfere with each other. After the interval between the pickup members 13 is widened, the parts are sucked.

  After picking up the component, the control device 31 of the component mounting machine moves the mounting head 14 above the camera 16 by the head moving mechanism 15 and images the component adsorbed on the component pickup member 13 by the camera 16. After recognizing the displacement of the suction position and the displacement of the suction angle (direction), the component pickup member 13 is rotated by the Q-axis rotation mechanism 23 to correct the shift of the suction angle of the component and the suction position of the component. The mounting head 14 is moved so as to correct the deviation, and the component is mounted on the circuit board. When the component is mounted on the circuit board, the negative pressure suction force is released by switching the component pickup member 13 that has attracted the component to a state in which the negative pressure / positive pressure switching device 26 supplies positive pressure. As a result, the component is detached from the component pickup member 13.

  Regardless of whether the component pickup member 13 is used with a claw or a suction nozzle, the range (size, shape, weight, etc.) of components that can be picked up by the same component pickup member 13 is limited. When picking up a component to be removed, the component pickup member 13 attached to the mounting head 14 is replaced with a component pickup member 13 that can pick up the component. Thereby, the part can be picked up.

  According to the present embodiment described above, the two component pickup members 13 attached to the mounting head 14 are each formed in a hollow shape and function as a suction nozzle, and also function as a claw by opening and closing. As a suction nozzle, it is possible to replace the two component pickup members 13 (suction nozzle and claw) attached to the mounting head 14 according to the size, shape, etc. of the component. It is possible to switch between the function and the function as a crow, and productivity can be improved. In addition, since each component pickup member 13 is configured to serve as both the suction nozzle and the claw, it is possible to avoid an increase in the size of the mounting head 14 compared to a configuration in which the suction nozzle and the claw are provided separately, and is compact. It can be configured.

  Further, when the component pickup member 13 is used as a suction nozzle, the Q-axis rotation mechanism 23 can correct the component suction angle deviation and mount it on the circuit board. In addition, when the component pickup member 13 is used as a claw, it can be mounted on the circuit board by correcting the deviation of the clamping angle by the R-axis drive mechanism 22.

  In addition, in the present embodiment, since a plurality of component clamping surfaces having different shapes are formed on the lower outer periphery of the component pickup member 13 along the rotation direction, the shape of the component to be sandwiched when the component pickup member 13 is used as a claw. Accordingly, by rotating the component pickup member 13 by the Q-axis rotation mechanism 23, the component clamping surface that sandwiches the component among a plurality of component clamping surfaces can be switched to a component clamping surface suitable for the shape of the component to be sandwiched. Thus, the component can be stably clamped by the component clamping surface, and the component can be prevented from being dropped or displaced while the mounting head 14 is moving.

  Furthermore, in this embodiment, when the component pickup member 13 is used as a suction nozzle, the opening / closing mechanism 25 is used to separate the two component pickup members 13 so that the components attracted to the two component pickup members 13 do not interfere with each other. Since the size of the parts that can be sucked to the two parts pickup members 13 without interfering with each other can be increased, an erroneous picking of the parts due to the interference between the parts, an abnormal suction posture, etc. can be prevented. This has the advantage that even relatively large parts can be adsorbed stably.

  The present invention is not limited to the above-described embodiment, and a component pickup member having a different shape is replaceably attached to the mounting head 14, or three or more component pickup members are replaceably attached to the mounting head 14. In addition, only one component clamping surface may be formed on the lower outer periphery of the component pickup member, or the component pickup member may be formed in a straight line. Needless to say, various modifications can be made without departing from the scope of the invention, such as appropriate modifications.

  DESCRIPTION OF SYMBOLS 11 ... Component supply apparatus, 12 ... Conveyor, 13 ... Component pick-up member, 14 ... Mounting head, 15 ... Head moving mechanism, 21 ... Holder, 22 ... R axis drive mechanism, 23 ... Q axis rotation mechanism, 24 ... Z axis drive Mechanism, 25 ... Opening / closing mechanism, 26 ... Negative pressure / positive pressure switching device, 31 ... Control device

Claims (4)

A mounting head that moves between a component pickup position for picking up a component supplied by the component supply device and a component mounting position for mounting the component on the circuit board;
A plurality of component pickup members attached to the mounting head;
Each of the plurality of component pickup members is configured to function as a claw that picks up a component with a component interposed therebetween, and also functions as a suction nozzle that is formed in a hollow shape and sucks and picks up the component at the tip.
The mounting head includes an opening / closing mechanism for opening / closing the plurality of component pickup members when the plurality of component pickup members are used as a claw, and the plurality of component pickup members when the plurality of component pickup members are used as suction nozzles. A negative pressure supply path for supplying a negative pressure to each of the component holding members, and a Q-axis rotation mechanism for rotating each of the plurality of component pickup members to correct a component suction angle are provided. Component mounting machine.   At least one of the plurality of component pickup members has a plurality of component clamping surfaces having different shapes formed along the rotation direction. When used as a claw, the component pickup member is rotated by the Q-axis rotation mechanism. 2. The component mounting machine according to claim 1, wherein the component clamping surface for clamping the component is switched from the plurality of component clamping surfaces according to the shape of the component to be sandwiched.   When the plurality of component pickup members are used as suction nozzles, the interval between the plurality of component pickup members is changed by the opening / closing mechanism so that the components attracted to the plurality of component pickup members do not interfere with each other. The component mounting machine according to claim 1 or 2.   The component mounting machine according to any one of claims 1 to 3, wherein the plurality of component pickup members are attached to the mounting head in a replaceable manner.

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