JP2001291996A - Modular part mounter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To advantageously save the space while reducing the cost by connecting a plurality of unit mounters into a modular mounter, in view of high speed, quick reaction and adaptability. SOLUTION: A plurality of unit mounters 1, each comprising a mounting head and a means for driving the mounting head and can carry in/out a printed board, are connected in series to constitute a mounter group. An interconnection conveyor installation base 30, interposed between the mounter group and an upstream side apparatus, is provided with a single controller 50 for the mounter group. The controller 50 controls a drive means provided for each unit mounter 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a component mounting module including a plurality of unit mounters connected in series.

[0002]

2. Description of the Related Art Conventionally, a mounting head having a nozzle member for picking up a component, a driving means for driving the mounting head and the nozzle member, a conveyor for loading and unloading a substrate, and a component supply unit have been known. A mounting machine that carries a printed circuit board to be mounted by the conveyor and installs it at a predetermined mounting work position, and then mounts the electronic component sucked from the component supply unit by the mounting head on the printed circuit board. Generally known.

In recent years, in order to increase the speed, agility, and adaptability to product changeover of a mounting operation, a plurality of unit mounters (module mounters) are used to mount a large number of types of components on a printed circuit board. A modular mounting device that is designed to perform the operations in a distributed manner has also been developed. That is, in this modular mounting apparatus, several types of components are sequentially mounted on a printed circuit board by connecting the plurality of unit mounting machines in series in the board transfer direction by each unit mounting machine. . And, the plurality of unit mounting machines, a loader disposed upstream thereof, equipment such as a cream solder printing machine, and a reflow furnace disposed downstream,
A transfer line is constituted by devices such as an unloader.

[0004]

By the way, in the conventional module type mounting apparatus, a controller is individually provided for a plurality of unit mounting machines connected in series, and the driving means is controlled by the controller for each unit mounting machine. Control is performed. For this reason, there is a need for a space for incorporating the controller and the controller monitor in each unit mounting machine, and there has been a problem that the entire module type mounting apparatus becomes large and the cost is high.

In view of such circumstances, the present invention can reduce the space and cost while connecting a plurality of unit mounting machines to form a module which is advantageous in high speed, agility, adaptability, and the like. An object is to provide a module type mounting device.

[0006]

According to the present invention, there is provided a mounting head for mounting components on a substrate to be mounted, and a driving means for driving the mounting head. A plurality of unit mounters that can be carried out are connected in series to form a group of mounters, and a single controller is provided for this group of mounters. The driving means is configured to be controlled.

According to this apparatus, it is not necessary to separately provide a controller and a monitor attached thereto for a plurality of unit mounting machines, and it is possible to save space and reduce the cost by reducing the number of controllers and the like.

[0008] In the apparatus of the present invention, between the mounting machine group and the upstream device and between the mounting machine group and the downstream device,
It is preferable to provide a relay conveyor mounting table equipped with a relay conveyor for transferring the board to be mounted, and to arrange the controller on one of the relay conveyor mounting tables.

With this configuration, the transfer of the board from the upstream device to the mounting device group and the transfer of the board from the mounting device group to the downstream device are smoothly performed by the relay conveyor, and the relay conveyor is used. In this case, a controller is arranged and each unit mounting machine is reduced in size by omitting the controller.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration of a module-type component mounting apparatus. This module-type component mounting apparatus includes a group of mounting units in which a plurality of unit mounting machines (module mounters) 1 are connected in series in a board conveying direction. In the illustrated example, the mounting machine group is composed of four unit mounting machines 1.

As shown in FIGS. 3 and 4, each of the unit mounters 1 has a transport conveyor 3 arranged on a base 2 so that a printed circuit board P can be loaded and unloaded as shown in FIGS. And a head unit 6 (mounting head) that has a component supply unit 4 disposed on both sides of the conveyor 3 and a nozzle member 20 for component suction and is disposed above the base 2.
And a drive unit such as a servo motor described later for driving the head unit 6 and the nozzle member 20.

The conveyor 3 comprises a pair of belt conveyors 3a and 3b arranged in parallel with each other. The pair of belt conveyors 3a and 3b support both sides of the printed circuit board P to be mounted. It is designed to be transported. It should be noted that a positioning device including a stopper that can be retracted and retracted and a push-up pin (not shown) is provided so that the printed circuit board conveyed by the transport conveyor 3 can be stopped at a predetermined P mounting operation position to perform the mounting operation. Have been.

The component supply section 4 is provided with a feeder capable of supplying electronic components. For example, a plurality of rows of tape feeders 5 are provided.

Further, the head unit 6 picks up a component from the component supply unit 4 and mounts the component on the printed circuit board P at the mounting operation position in the X-axis direction (the direction of the conveyor 3) and the Y-axis direction. (A direction orthogonal to the X axis on a horizontal plane).

That is, a pair of fixed rails 7 extending in the Y-axis direction and a ball screw shaft 8 driven to rotate by a Y-axis servomotor 9 are disposed on the base 2. A head unit supporting member 11 is disposed on the supporting member 11, and a nut portion (not shown) provided on the supporting member 11 is screwed to the ball screw shaft 8. The support member 11 has a guide member 13 extending in the X-axis direction.
And a ball screw shaft 14 that is driven to rotate by an X-axis servomotor 15, the head unit 6 is movably held by the guide member 13, and a nut portion (not shown) provided on the head unit 6 is provided. ) Is screwed onto the ball screw shaft 14. Then, the Y-axis servo motor 9
The ball screw shaft 8 is rotated by the operation of
1 moves in the Y-axis direction, and the X-axis servo motor 1
The operation of 5 rotates the ball screw shaft 14 so that the head unit 6 moves in the X-axis direction with respect to the support member 11. The Y-axis servomotor 9 and the X-axis servomotor 15 are respectively provided with encoders 16 and 17 as position detecting means.

The head unit 6 is provided with one or a plurality of nozzle members 20 so as to be able to move up and down and rotatable.
And an R-axis servo motor 22 for rotating the nozzle member 20
Is equipped. Encoders 23 and 24 (see FIG. 2) as position detecting means are mounted on the Z-axis servo motor 21 and the R-axis servo motor 22, respectively.
In addition, the elevation drive of the nozzle member 20 may be performed by an air cylinder. The head unit 6 is further provided with a camera (not shown) for recognizing a fiducial mark attached to the printed board.

On the other hand, an image pickup device 25 for component recognition, such as a CCD camera and a certificate, is provided on the base 2. In the example shown in the figure, component supply is performed on both sides of the conveyor 3 in the Y-axis direction. The unit 4 is divided on both sides in the X-axis direction, and an imaging device 25 is provided between them.

Driving means such as the conveyor 3, the head unit 6, the servomotors 9, 15, 21, 22 and the like,
An image pickup device 25 and the like are provided in the housing of each unit mounting machine 1 shown in FIG. 1, and a plurality of conveyors 3 are arranged so that both ends face outward from the side wall of the housing and the conveyors 3 of each unit mounting machine 1 are connected in series. Are mounted.

In FIG. 1, a plurality of unit mounting machines 1
Are provided between the mounting machine group constituted by the above and the upstream device 27 and between the mounting machine group and the downstream device 28, respectively. Each of the relay conveyor mounting tables 30 and 31 is provided with a relay conveyor 32 for transferring the printed circuit board P between the upstream device 27 and the mounting device group or between the mounting device group and the downstream device 28. ing.

The relay conveyor 32 is mounted on each unit mounting machine 1
The conveyor 3 includes a pair of belt conveyors 32a and 32b, as in the case of the conveyor 3, and supports and transports both sides of the printed circuit board P. Preferably, as shown in FIGS. 5 and 6, the relay conveyor 32 can be moved in the vertical direction and also can be moved in the horizontal direction (Y direction), so that the upstream and downstream devices 27 and 2 can be moved.
8 and the mounting machine group, when the height of the conveyor is different or when the position of the conveyor is shifted in the horizontal direction, the position can be adjusted in the height direction or the horizontal direction when the board P is transferred by the relay conveyor 32. To do.

The conveyor position adjusting mechanism shown in FIGS. 5 and 6 will be described. Although these figures show the relay conveyor installation table 30 on the upstream side, a similar conveyor position adjustment mechanism is also provided on the relay conveyor installation table 31 on the downstream side.

On a base 33 of the relay conveyor mounting table 30, a movable substrate 35, which is supported on both sides by a guide 34 and is movable in the horizontal direction, is arranged, and a ball connected to a servomotor 36 is provided. Screw shaft 37 is movable board 35
A nut (not shown) provided on the lower surface of the movable substrate 35 is screwed to the ball screw shaft 37. And the servo motor 3
When the ball screw shaft 37 is rotationally driven at 6, the movable substrate 35 moves in the lateral direction.

Above the movable substrate 35, a conveyor 32
The conveyor support frame 38 that supports the
Ball screw shaft 40 suspended from the conveyor support frame 38
The nut member 4 rotatably provided on the movable substrate 35
1 is screwed, and the nut member 41 is
5 is connected via a drive belt 43 to the servomotor 42 held by the drive motor 5. When the nut member 41 is rotationally driven by the servo motor 42 via the drive belt 43, the conveyor support frame 38 and the conveyor 32 supported by the conveyor support frame 38 are moved up and down.

As shown in FIGS. 1 and 2, a single controller 50 is provided for a group of mounting machines composed of a plurality of unit mounting machines 1, and this controller 50 is provided on one relay conveyor mounting table. And in the example shown in the figure, it is incorporated in the space below the conveyor 32 on the upstream relay conveyor installation table 30.

The controller 50 is electrically connected to driving means provided in each unit mounting machine 1. Specifically, the X-axis servo motor 15, the Y-axis servo motor 9, and the Z-axis servo motor 2 in each unit mounting machine 1
1 and the R-axis servomotor 22 are connected to the input / output electrical connection 5
1 and a wire harness 52 connected thereto and connected to the controller 50, and in addition, various driving means 53 provided in each unit mounting machine 1 such as a motor for driving a conveyor are connected to the electric connection section 51. And the controller 50 via a wire harness 52.
Further, the encoders 16, 17, 23, 24 provided in the servomotors 9, 15, 21, 22 and various sensors (not shown) provided in the unit mounting machine also include the electric connection portion 51 and the wires. The controller 50 is connected to the controller 50 via a harness 52.

Further, a motor and the like provided on the relay conveyor mounting table 31 on the downstream side are also connected to the controller 50 via a wire harness 52.
Needless to say, the motor and the like provided on the relay conveyor mounting table 30 on the upstream side are connected to the controller 50 via the internal wiring of the relay conveyor mounting table 30.

Further, the relay conveyor mounting table 30 provided with the controller 50 is provided with a mounting machine vision monitor 54 and a mounting machine operation monitor 55, and the monitors 54 and 55 are also connected to the internal wiring of the relay conveyor mounting table 30. Is connected to the controller 50 via the.

The controller 50 controls the servo motors and other various driving means provided on each unit mounting machine 1 and the motors provided on the relay conveyor mounting tables 30 and 31 as a whole. It has become.

According to the apparatus of the present embodiment as described above,
The mounting apparatus is modularized so that components are mounted on the printed circuit board P in a distributed manner and sequentially mounted by the plurality of unit mounting machines 1, thereby increasing the speed of mounting work, agility, applicability to product switching, and the like. Can be enhanced.

While taking advantage of such modularization, in particular, since the driving means provided in each unit mounting machine 1 is controlled by a single controller 50, space saving and cost reduction are achieved. Down becomes possible.

That is, the controller 50 is provided only on one relay conveyor installation base 30, and the controller conventionally provided separately for each mounting machine 1 is omitted.
Further, if the monitors 54 and 55 are also provided on the relay conveyor installation base 30 corresponding to the controller 50, it is not necessary to provide the monitors for each unit mounting machine 1. Therefore, the installation space for the controller 50 and the monitors 54 and 55 in each unit mounting machine 1 is omitted, so that the size can be reduced, and the cost can be reduced by reducing the controller 50 and the like.

Further, an input operation unit (not shown) including a keyboard for various setting operations and the like is also provided in the controller 5.
In addition, since it is possible to equip the relay conveyor mounting table 30 corresponding to 0 and perform operations for each unit mounting machine at once, it is advantageous in terms of operability and the like.

Further, since the controller installation space below the conveyor 3 is omitted in each unit mounting machine, the height of the conveyor 3 is reduced as compared with the conventional one, and
Can be lowered. Therefore, the stability can be increased by lowering the center of gravity of the mounting machine, and the intimidating feeling for the operator can be reduced, and a layout that is gentle to humans can be achieved.

When the conveyor height of each unit mounting machine 1 of the mounting machine group is reduced as described above, there is a difference in the conveyor height between the upstream and downstream devices 27 and 28 and the mounting machine group. Since the vertical position of the conveyor 32 can be adjusted on the relay conveyor installation base 30, the difference in the conveyor height as described above can be adjusted here.

That is, in the relay conveyor mounting table 30, first, the conveyor height is set to the conveyor 5 of the upstream equipment 27.
7, the printed circuit board P is received from the upstream device 27, and then the conveyor height is changed so as to correspond to the conveyor 3 of the mounting machine group, and then the printed circuit board P is sent to the mounting machine group. do it. The transfer of the printed circuit boards P may be performed in the same manner on the downstream relay conveyor installation table 31 while adjusting the conveyor height.

Further, in this embodiment, since the position of the conveyor 32 can be adjusted in the horizontal direction at each of the relay conveyor mounting tables 30 and 31, it is mounted on the upstream and downstream devices 27 and 28 due to the layout and the like. When the position of the conveyor in the horizontal direction (direction orthogonal to the transport direction) is shifted from the group of machines, the printed circuit board P is transferred between the upstream and downstream devices 27 and 28 and the group of mounting machines. At this time, in addition to the adjustment of the vertical position of the conveyor 32 as described above, the adjustment of the horizontal position may be performed.

The specific structure of the device of the present invention is not limited to the above embodiment, but can be variously modified.

For example, in the example shown in the figure, four unit mounters 1 are connected in series. However, if the number is two or more, the number may be increased or decreased according to design requirements. The controller 5
0 may be provided on the relay conveyor installation table 31 on the downstream side.

In the illustrated embodiment, each unit mounting machine 1
Although all monitors are omitted from FIG. 1, only a monitor for vision may be provided.

[0041]

As described above, according to the present invention, a plurality of unit mounting machines are connected in series to form a mounting machine group, and a single controller is provided for the mounting machine group. It is configured to control the driving means provided in each unit mounting machine, so it is possible to control the module separately for a plurality of unit mounting machines while achieving modularization advantageous for high speed and agility of mounting work. This eliminates the necessity of providing a monitor or the like attached thereto, thereby enabling space saving and cost reduction by reducing the number of controllers and the like.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a module type mounting apparatus according to the present invention.

FIG. 2 is a block diagram of a control system in the mounting device.

FIG. 3 is a schematic plan view illustrating an example of a unit mounting machine.

FIG. 4 is a schematic front view of a head unit arrangement portion in the unit mounting machine.

FIG. 5 is a schematic front view showing a structure of a relay conveyor mounting table provided in the module type mounting apparatus.

FIG. 6 is a schematic plan view showing the structure of the relay conveyor installation table.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit mounting machine 3 Conveyor 6 Head unit 9, 15, 21, 22 Servo motor 30, 31 Relay conveyor installation table 32 Relay conveyor 50 Controller

Claims (2)

[Claims] 1. A unit comprising a mounting head for mounting components on a substrate to be mounted and a driving means for driving the mounting head, and capable of loading and unloading the substrate. A plurality of mounting machines are connected in series to form a mounting machine group, and a single controller is provided for this mounting machine group, and the controller controls the driving means provided in each of the unit mounting machines. A module-type component mounting apparatus characterized by being configured as described above. 2. A relay conveyor mounting table having a relay conveyor for transferring a board to be mounted is provided between the mounting machine group and the upstream device and between the mounting machine group and the downstream device. 2. The module-type component mounting apparatus according to claim 1, wherein the controller is arranged on one of the relay conveyor mounting tables.