JPH0770862B2 - Driving force intermittent control mechanism for electronic component mounting machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic component automatic mounting machine in which an electronic component mounting head receives an electronic component from an electronic component supply device and mounts the electronic component on a board surface of a printed circuit board. The operating mechanism unit and the driving force supply mechanism unit are connected to each other in order to cause the operating mechanism unit including the component mounting head and the electronic component supply device to perform a predetermined operation,
The present invention relates to an improvement in a drive force on / off control mechanism for shutting off.

2. Description of the Related Art Conventionally, an example of a drive mechanism for vertically moving an electronic component mounting head is equipped with an electric motor as a driving force source, and a focus cam is attached on the axis of a cam shaft rotated by the electric motor. One end side of the link rod is connected to the cam follower that interlocks with, and a bell crank is equipped on the other end side of the link rod, and the bell crank presses the tabet of the lifting rod to swing the mounting head of the electronic component. It is known to descend (Actual No. 56-126389).

Further, as an automatic electronic component mounting machine, a plurality of electronic component mounting heads are provided on a plate concentric circle of a rotor that rotates intermittently, and the electronic component mounting heads are moved up and down in a predetermined order to tape the electronic components. When the mounting head that receives the electronic components one by one from the feeder and other component supply device moves to the component mounting position on the XY table by the intermittent rotation of the rotor, it detects whether the electronic components are suitable for adsorption. There is a configuration in which electronic components are mounted on a plate surface of a printed circuit board by a mounting head after each process such as direction turning for correcting the suction posture of the electronic components.

In the automatic mounting machine for electronic parts having a plurality of mounting heads, when the above-mentioned drive mechanism is applied, the number of parts constituting the drive mechanism is large, which makes the mechanism complicated. It is difficult to adjust the timing because the electronic components must be actuated so that they can be mechanically synchronized with the operation timing of other related mechanical parts when detecting whether the electronic parts are adsorbed properly or improperly, or when changing the direction or mounting parts. There is also.

SUMMARY OF THE INVENTION The present invention is capable of reliably connecting and disconnecting an operating mechanism unit including a mounting head for electronic components and an electronic component supply device and a driving force supply mechanism unit with a simple mechanism, and operating the same. An object of the present invention is to provide a driving force intermittent control mechanism in an electronic component mounting machine, which is improved so that the operation timings of the mechanical unit and other related mechanical units can be accurately matched.

Means for Solving the Problems A driving force intermittent control mechanism in an electronic component mounting machine according to the present invention is provided with a plurality of mounting heads of electronic components on a plate surface concentric circle of a rotor that intermittently rotates, and the mounting heads are provided in a predetermined manner. An electronic component mounting head and an electronic component supply device are used for mounting and dismounting the electronic components on the board surface of the printed circuit board by the mounting heads while the electronic components are individually moved from the electronic component supply device by sequentially moving up and down. And a driving force supply mechanism part are connected and disconnected to allow the operation mechanism part including a driving mechanism to perform a predetermined operation. A cam groove of a curved shape provided on the plate surface of the cam board, and an operating rod that moves up and down by being engaged by a cam follower, and further, one of which is mounted on the axis of the operating rod and the other of which is the operating mechanism. To the department Put example, projects in response to an electrical signal to the core pin, and a solenoid to pull-in operation, the projection of the solenoid, the engagement fixing the core pin to pull-in operation, and is configured by providing a block disengaging.

The drive force intermittent control mechanism of this electronic component mounting machine
The actuating mechanism section is provided with a solenoid for projecting and retracting the core pin in response to an electric command, and a block for engaging and fixing and disengaging the core pin of the solenoid, and for causing the actuating mechanism section to perform a predetermined operation. Since the driving force is intermittently controlled by connecting and disconnecting with the driving force supply mechanism, even if a plurality of mounting heads are equipped, a simple mechanism can be used at any time to perform the necessary driving force. It can be configured so that it can be supplied. Further, since the solenoid is responsive and the operation of the operating mechanism can be set according to the shape of the cam groove of the cam board, the operating timing with other operating mechanism can be easily adjusted to operate the operating mechanism accurately. Can be configured as follows.

Embodiments The following will be described with reference to the accompanying drawings.

The drive force on / off control mechanism shown in FIG. 1 is to be assembled to an electronic component automatic mounting machine, and the drive motor 1 is used as a drive force source
The drive force supply mechanism X having the drive motor 1 is connected / disconnected from the drive force supply mechanism X so that a mounting head for electronic components and an operation mechanism side Y including an electronic component supply device, which will be described later, perform a predetermined operation. It is assembled to do.

In the driving force supply mechanism X, a rotary shaft 2 rotated by a drive motor 1, a cam disk 3 attached on the axis of the rotary shaft 2, and a curve provided on the side surface of the cam disk 3. An operating rod 6 which is vertically moved by engaging with a cam follower 5 is provided in the shaped cam groove 4. Further, the driving force supply mechanism X is provided with a solenoid 8 which is mounted on the axis of the operating rod 6 to cause the core pin 7 to project and retract in response to an electrical signal. With respect to the driving force supply mechanism section X, the actuating mechanism section Y is provided with a block 9 for engaging and fixing and disengaging the core pin 7 for projecting and retracting from the solenoid 8. In addition, the solenoid 8 is a cylindrical coil that generates a magnetic field in response to an electric signal, and is equipped with a core pin 7 that reciprocates along the central axis of the coil.

The drive force on / off control mechanism is assembled to an electronic component automatic mounting machine as shown in FIGS. This electronic component mounting machine is equipped with a plurality of electronic component mounting heads 10a, 10b ... On the plate surface concentric circles of the rotor R that rotates intermittently, and each mounting head 10a, 10b ... A plurality of tape feeders 20a, 20b ... Are arranged just below the moving path as a device for supplying electronic components, and a printed circuit board is placed at a predetermined distance from the arrangement position of the tape feeders 20a, 20b. It is configured by equipping the XY table 30.

In the automatic mounting machine for the electronic parts, the mounting heads 10a, 10
b ... is equipped so that the electronic parts can be sucked one by one from the predetermined positions of the tape feeders 20a, 20b ... by moving up and down in a predetermined order. The tape feeders 20a, 20b ... Are arranged in a radial pattern so as to send out the electronic components just below the position where the mounting heads 10a, 10b. Also,
Between the positions where the tape feeders 20a, 20b ... And the XY table 30 are arranged, an inspection device using a photoelectric tube or the like for inspecting the adequacy or inadequacy of adsorption of electronic components, and a direction by a chuck or the like for correcting the adsorption posture of electronic components described later. A turning device and the like are provided.

In the electronic component automatic mounting machine, the driving force intermittent control mechanism is provided at the component feeding position of the tape feeder 20a ... As shown in FIG. 4 and at the electronic component direction turning device 40 as shown in FIG. Further, as shown in FIG. 6, the printed circuit board P placed on the surface of the XY table is assembled so as to supply a driving force for moving up and down the mounting heads 10a ... Further, as shown in FIG. 4, the driving force for swinging and rotating the cam lever 21 for pitch-feeding the carrier tape T of the tape feeder 20a is mounted on the cam lever 21.

The driving force on-off control mechanism equipped in each part uses the driving motor 1 of the driving force supply mechanism shown in FIG. 6 as a common driving force source, and the rotating shafts 2a, 2b and FIG. 6 shown in FIG. The driving force is supplied via the rotating shaft 2c indicated by. It should be noted that the alternate long and short dash line shown in FIGS. 4 to 6 shows the connection relationship from the drive motor 1 of the drive force supply mechanism section to the drive force on / off control mechanism assembled at various places.

In the drive force on / off control mechanism shown in FIG. 4, the rotary shaft of the drive force supply mechanism shown in FIG. 5 is used to move the mounting heads 10a for electronic components up and down to the component feeding position of the tape feeder 20a. Attach the cam board 3a to 2a, and the cam board
The cam follower 5a engaged with the cam groove 4a of the 3a,
The respective parts are connected so as to move the operating rod 6a shown in the figure up and down. Also, as shown in FIG. 4, the operating rod 6a has a solenoid.
8a is attached to the lower end of the shaft, while the driven mechanism having the mounting heads 10a is provided with a block 9a for engaging and disengaging the core pin 7a which is projected and retracted from the solenoid 8a of the driving force supply mechanism. It is configured by installing it.

In this drive force on / off control mechanism, a predetermined mounting head 10a ...
When the electronic command is sent to the solenoid 8a from the component sending position of the tape feeder 20a ... by the tip of the nozzle, the solenoid 8a operates to cause the core pin 7a to project. When the core pin 7a is engaged and fixed by the block 9a, the cam follower 5a moves along the cam groove 4a of the cam disk 3a which is rotationally driven by the drive motor 1 shown in FIG. 6, and the operating rod is driven via this cam follower 5a. By moving 6a downward, it is possible to supply a driving force for lowering the mounting heads 10a from the rotor R to the mounting heads 10a. Also,
When the mounting head 10a sucks the electronic components at the tip of the nozzle, the operating rod 6a ascends along the cam groove 4a of the continuously rotating cam plate 3a, and the solenoid 8a pulls in the core pin 7a to move the core pin 7a. By disengaging the 7a from the block 9a, it is possible to stop the supply of the driving force so that the mounting heads 10a ... Stand by at their original predetermined positions.

In addition, the rotary shaft 2a shown in FIG.
2b and the gears 2d at each shaft end are connected, and as shown in FIG. 4, a cam plate 3b is attached on the extension line of the rotating shaft 2b, and the cam groove 4b of the cam plate 3b is engaged with the cam follower 5b. Operating rod
6b, and by locking and releasing the core pin 7b of the solenoid 8b mounted on the axis of the operating rod 6b with the block 9b, the cam lever 21 of the tape feeder 20a ... Is pushed down by the block 9b and oscillated. The mechanism to do is installed. The tape feeders 20a are equipped so that the carrier tape T of the electronic component is fed out from the reel 22 by the rocking movement of the cam lever 21 by the block 9b and pitch-fed.

Further, as shown in FIG. 5, a mechanism for moving up and down the mounting heads 10a for electronic parts with respect to the directional swivel device 40 is attached to the above-mentioned rotating shaft 2a. This mechanism mounts the cam board 3c on the axis of the rotating shaft 2a,
By providing the operating rod 6c by engaging the cam groove 4c of 3c with the cam follower 5c, the core pin 7c of the solenoid 8c mounted on the axis of the operating rod 6c is fixedly engaged with and released from the block 9c. The mounting heads 10a are assembled so as to move downward so as to be sandwiched by the chuck 41 of the direction swivel device 40, the electronic components sucked by the nozzle tips. Similarly, a mechanism for moving the electronic component sucked by the tip of the nozzle of the mounting head 10a ... Can be attached to the component suction posture inspection device, the component discharge device for the missing component, and the like.

Further, as shown in FIG. 6, a mechanism for moving down the mounting heads 10a ... Is mounted in order to mount the electronic components sucked by the mounting heads 10a .. There is. This mechanism mounts a cam disk 3d on the axis of the rotating shaft 2c, engages a cam groove 4d of the cam disk 3d with a cam follower 5d, and is equipped with an operating rod 6d. Is mounted, and the latching lever 50 is removed by the core pin 7d protruding from the solenoid 8d, so that the mounting heads 10a for electronic parts are moved downward.

In the embodiment described above, the solenoid 8 (8a, 8b, 8c, 8
d) is provided in the driving force supply mechanism section X, and blocks 9 (9a, 9b, 9
Although the description has been given based on the case where the actuating mechanism section Y is provided with c, 9d), the actuating mechanism section Y may be provided with the mechanism sections X and Y in reverse order.

EFFECTS OF THE INVENTION As described above, according to the driving force on-off control mechanism in the electronic component mounting machine according to the present invention, an operation including a mounting head for an electronic component and an electronic component supply device is performed by using a solenoid that operates by an electric command. Since the intermittent control is performed so as to supply or stop the driving force to the mechanism unit, the driving force supply mechanism unit and the actuation mechanism unit can be configured to be connected or disconnected by a simple mechanism. Further, since the solenoid has a fast response speed to an electric command and can cause the actuating mechanism to perform a predetermined operation according to the curved shape of the cam board, each actuating mechanism can be accurately timed with other related mechanism. Can be operated. Furthermore, even if the number of mounting heads is large,
Since the solenoid can be operated by an electric command according to a predetermined program, each mounting head can be equipped so as to easily control the operation.

[Brief description of drawings]

FIG. 1 is an explanatory view showing by extracting a driving force intermittent control mechanism in an electronic component mounting machine according to the present invention, and FIG. 2 is a plan view showing an electronic component automatic mounting machine to which the driving force intermittent control mechanism is assembled. FIG. 3 is a side view showing the electronic component automatic mounting machine, and FIGS. 4 to 6 are explanatory views showing respective parts where the driving force intermittent control mechanism is assembled in the electronic component automatic mounting machine. X: Driving force supply mechanism part, Y: Actuating mechanism part, 1: Driving force supply mechanism drive motor, 2 (2a, 2b, 2c): Rotating shaft, 3 (3
a, 3b, 3c, 3d): cam board, 4 (4a, 4b, 4c, 4d): cam groove,
5 (5a, 5b, 5c, 5d): Cam follower, 6 (6a, 6b, 6c, 6
d): Operating rod, 7 (7a, 7b, 7c, 7d): Core pin, 8 (8a, 8
b, 8c, 8d): Solenoid, 9 (9a, 9b, 9c, 9d): Block, 10a, 10b ...: Electronic component mounting head, 20a, 20b ...: Electronic component supply device, R: Rotor.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-58-25295 (JP, A) JP-A-61-77398 (JP, A) JP-A-61-76227 (JP, A) JP-A-61- 81363 (JP, A) Actual development Sho 56-126389 (JP, U) JP 59-7611 (JP, B2) JP 57-60793 (JP, B2) JP 3-63840 (JP, B2) Japanese Patent Publication 5-30571 (JP, B2) Japanese Patent Publication 7-19999 (JP, B2)

Claims (1)

[Claims] 1. A plurality of mounting heads for electronic parts are provided on concentric circles on a plate surface of a rotor which rotates intermittently, and the mounting heads are moved up and down in a predetermined order so that one electronic part is supplied from an electronic part supply device. An automatic electronic component mounting machine that receives the electronic component and mounts the electronic component on the plate surface of the printed circuit board by the mounting head, and causes the operating mechanism including the electronic component mounting head and the electronic component supply device to perform a predetermined operation. A driving force interrupting control mechanism for connecting and disconnecting the operating mechanism unit and the driving force supply mechanism unit, wherein the driving force supply mechanism unit receives a driving force and is driven to rotate, and a plate surface of the cam disc. A cam groove having a curved shape and an operating rod that is engaged with a cam follower to move up and down.Further, one is attached to the axis of the operating rod and the other is attached to the operating mechanism section, and a core pin is attached. Electrical signal A drive force on / off control mechanism for an electronic component mounting machine, comprising: a solenoid that causes a protrusion / retraction operation in accordance with the above; and a block that engages / fixes / disengages a core pin that causes a protrusion / retraction operation of the solenoid.