JPH04124900A - Part mounting apparatus - Google Patents

Abstract

PURPOSE:To realize labor saving during manual operation and obtain a part mounting layer having excellent space efficiency by feeding back a substrate discharged from a part mounting apparatus upon completion of part mounting to the substrate supply side and housing the substrate again into a magazine. CONSTITUTION:A lifter unit 8 for substrate supply side is provided between a magazine supply apparatus 2 and a part mounting apparatus 1 and a substrate 4 supplied from the magazine supply apparatus 2 is transferred to a relay conveyor 7a. A lifter unit 9 for substrate discharge side is provided in the substrate discharge side of the part mounting apparatus 1, it receives the substrate 4 after part mounting from a relay conveyor 7b, lifts under the condition of mounting the substrate 4 and transfers the substrate 4 to a hand 11 of a return unit 10 at the upper end. The return unit 10 carries the substrate up to the lifter unit 8 for the substrate supply side in order to return the substrate to the substrate supply side and puts the substrate 4 on the conveyor of the lifter unit 8 for the substrate supply side and thereafter accommodates the substrate in a magazine 5. The hand 11 having transferred the substrate 4 returns again to the position A.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a component mounting device, and more specifically, to a component mounting device that automatically mounts a predetermined number of predetermined components at predetermined positions on a printed wiring board. This invention relates to a component mounting apparatus for making printed circuit boards.

Hereinafter, the printed wiring board and the printed circuit board will be collectively referred to simply as a board.

<Prior Art> FIG. 5 shows an example of a conventional structure. In the figure, a component mounter 1 is configured to automatically mount and eject a predetermined number of predetermined components at predetermined positions on a supplied board. Various configurations are commercially available depending on the type and number of them. Magazine supply devices 2 and 3 are provided on the board supply side and the board discharge side of the component mounting machine 1, respectively.

The magazine supply device 2 on the substrate supply side is used for supplying substrates (printed layouts).
A supply magazine 5 containing an appropriate number of boards) 4 carried in by a worker or an unmanned vehicle is supplied to the illustrated board take-out section, and the boards 4 are taken out one by one from the supply magazine 5 to the component mounting machine 1. It is intended for supply to on the other hand,
The magazine supply device 3 on the board discharge side receives a board (printed circuit board) on which components have been mounted and discharged by the component mounting device ll.
4 into a pre-filled empty storage magazine 6,
This is something that cannot be transported. These magazine supply devices 2 and 3 are generally the same, and are used for taking out the board 4 from the magazine 5, storing the board 4 in the magazine 6,
It is used by having the opposite effect.

Relay conhairs 7a and 7b are installed between the magazine supply device 2 on the board supply side and the component mounting machine 1 and between the component mounter 1 and the magazine supply device 3 on the board discharge side. The relay conveyor 7a on the board supply side transfers the board 4 carried from the magazine supply device 2 to the component mounter 1 in accordance with the supply instruction to the component mounter 1. On the other hand, the relay conveyor 7b on the board discharge side transfers the board 4, on which components have been mounted and discharged by the component mounting machine 1, to the magazine supply device 3.

Next, a series of operations of the component mounting apparatus configured as described above will be explained.

First, the magazine 5 containing an appropriate number of substrates 4 is carried into the magazine loading position (lower stage in FIG. 5) of the substrate supply-side magazine supply device 2, either manually or by an unmanned vehicle. The magazine supply device 2 on the substrate supply side transports the magazine 5 from the magazine loading position to the substrate take-out part (the position of the magazine 5 in FIG. 5), and then raises the magazine 5 one stage at a time at the board take-out part and stores it. The printed circuit boards 4 are sequentially sent onto the relay conhair 7a. At this time, the component mounter 1 sends a signal to the relay container 7a indicating whether or not the board 4 may be loaded.

In response to this signal, the relay container 7a performs an operation of either loading the board 4 or stopping the container and holding the board 4. When the board 4 is loaded into the component mounting device a1 and the component mounting is being performed, the input signal is not output, so if the board 4 is present, the relay conveyor 7a does not drive the conveyor and holds the board 4. ing.

On the other hand, if there is no board 4, the next board 4 is received from the magazine 5, and then the conveyor is stopped, the board 4 is held, and the board 4 is waited for the input signal from the component mounting machine 1.

When the input signal is output from the component actual device ll, the relay conveyor 7a drives the conveyor and removes the board 4 that was being held.
Insert. At the same time, the next board 4 is picked up from the magazine 5.

The board 4 transferred by the relay conveyor 7a and put into the component mounter 1 mounts a predetermined number of predetermined components at a predetermined position on the supplied board 4 according to a predetermined process in the component mounter 1. , and then from the discharge port to the relay conveyor 7b.
Drain to the top. In advance, an empty magazine 6 that has been brought into the board discharge side magazine supply device 3 manually or by an unmanned vehicle is conveyed from the delivery port to the board receiving section (the position of the magazine 6 in FIG. 5). , the magazine 6 is lowered one stage at a time in the board receiving section, and the boards 4 are loaded one by one from the lower storage stage.
to store.

At this time, the magazine 6 of the magazine supply device 3 on the board ejection side
When storage is not possible, the magazine feeding device 3 sends a signal indicating that storage is impossible to the relay converter 7b. When the signal is received, the relay conveyor 7b
When there is a substrate 4, the conveyor is not driven and the substrate 4 is held. On the other hand, if there is no board 4, wait until the board 4 is ejected from the component mounting machine 1, pick up the board 4 when it is ejected, then stop the conveyor, hold the board 4, and wait.

When the magazine supply device 3 on the substrate discharge side receives the substrate *i, it outputs a signal to the relay converter 7b indicating that the substrate can be stored. When the relay conveyor 7b receives the signal, the conveyor is driven to store the held substrate 4 into the magazine 6 in the receiving section of the magazine supply device 3.

Then repeat the series of actions. When all the substrates 4 stored in the magazine 5 of the magazine supply device 2 on the substrate supply side are fed out, the empty magazine 5 is transported to the magazine ejection position (upper stage in FIG. 5) of the magazine supply device 2 on the substrate supply side. , the magazine 5 containing the next board 4 is prepared in the board take-out section.

On the other hand, when the magazine 6 for substrate ejection becomes full, the magazine feeding device 3 for discharging the substrate is similarly transported to the ejection position (lower stage in FIG. 5), and prepares the next empty magazine 6 in the substrate receiving section.

<Problems to be Solved by the Invention> However, in the conventional device described above, as is clear from FIG. 6 showing a plan view of the device, there is a loading port for the supply magazine 5 shown by the solid line arrow and a storage port shown by the dashed line. Since the discharge port of the magazine 6 is located far away, there is a problem in that the operator has to travel a long distance when replacing the magazine.

In addition, when configuring the above-mentioned component mounting apparatus using various component mounters to make it in-line and carrying in and out magazines unattended, the component mounters (Ia to Ia) as shown in FIG. If the Id) is different, the length of the device in the board flow direction will vary depending on the component's parent machine, and if the magazine loading position is aligned, the unloading position will be uneven from line to line, making in-line production difficult. There's a problem. −
On the other hand, if you want to align the unloading positions, if you have a short component mounter, you will need to adjust the length of the relay conveyor according to its length, and if the relay conveyor is lengthened, extra space will be required. There was a problem.

The present invention was made in order to solve the above-mentioned problems, and it is possible to reduce the labor required for manual work, and even when in-line, there is no need to consider the length of the line, and the parts are space-efficient. The purpose is to provide mounting equipment.

<Means for Solving the Problems> In order to achieve the above object, a component mounting apparatus according to the present invention supplies boards to a component mounting machine from a magazine containing a predetermined number of boards, and also supplies the boards after component mounting. Provided on the upstream side of the component mounting machine is a magazine supply means for taking in and storing it in a magazine, and exchanging the magazine containing the board before component mounting with the magazine containing the board after component mounting;
The board is temporarily held between this magazine supply means and the component mounter and on the board discharge side of the component mounter, and the board discharged from the component mounter after component mounting is transferred from the board discharge side to the board supply side. The structure is such that it is transported to

<Function> In the component mounting apparatus according to the present invention, the board ejected from the component mounting machine upon completion of component mounting is returned to the board supply side and stored in the magazine again, thereby storing the board before component mounting. The magazine and the magazine containing the board after component mounting can be loaded and unloaded at the same location.
Inline can be easily implemented.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic perspective view showing an embodiment of the present invention. In the figure, parts equivalent to those of the conventional device shown in FIG.

In the figure, the magazine supply device 2 has the same structure and function as conventional ones, and has a substrate (printed wiring board) 4.
The magazine 5, which contains the applicable number of magazines, is carried into the loading port (lower section in Figure 1) by a worker or an unmanned vehicle, and is transported from the loading dock to the board retrieval section (the position of the magazine 5 in Figure 1). , while raising the magazine 5 one stage at a time in the board ejecting section, the board 4 is removed.
While the boards (printed circuit boards) 4 returned after component mounting are sequentially taken out and sent out, as will be described later, the magazines 5 are lowered one stage at a time and are sequentially stored from the lower stage of the magazine.

A beam cover unit 8 is provided between the magazine feeding device 2 and the parts mounting device 11. This board supply side lifter unit 8 has the function of bridging the board 4 sent out from the magazine supply device 2 to the relay conveyor 7a, and the function of lifting the board 4 to the hand part 11 of the return unit 10, which will be described in detail later, and receiving the board 4. The conveyor section is used to remove the substrate 4 and lower it again to store the substrate 4 in the magazine 5 of the magazine supply device 2, and is provided with a conveyor section which is raised/understitched by a drive source (not shown). This conveyor section can rotate forward, stop, and reverse depending on the control signal.

On the other hand, a glue lid unit 9 having the same structure as the board supply side glue lid unit 8 is provided on the board discharge side of the component mounter 1. This board discharge side lifter unit 9 is
The board 4 after mounting the components is removed from the relay conveyor 7b,
This function is to stop the conveyor section, raise the substrate 4 loaded thereon, and transfer the substrate 4 to the hand section 11 of the return unit 10 at the rising end.

The return unit 10 receives the board 4 ejected from the parts actualizing device a1 via the board discharge side lifter unit 9, and transports it to the board supply side lifter unit 8 in order to return it to the board supply side. It has a hand portion 11 for gripping the substrate 4, and is reciprocated between the A position and the B position by being driven by a linear drive mechanism 12.

That is, at position A, the substrate 4 placed on the conveyor section of the substrate discharge side lifter unit 9 that has risen
is held by the hand section 11. Then, the substrate 4 is transferred to the B position and waited, and when the conveyor section of the substrate supply side lifter unit 8 rises and the rising is completed, the hand section 11 grips the substrate 4 in response to a signal emitted from a sensor (not shown). unlock.

As a result, the board 4 becomes the board supply side lifter unit.

is placed on the conveyor section of the tray 8. The hand section 11 that has transferred the substrate 4 returns to the A position again and waits for the next operation.

Here, for the example of the return unit 10, the second
The explanation will be based on the perspective view of the figure.

In FIG. 2, a pair of sliders 14a and 14b are movably coupled to a guide frame 13 extending in the conveying direction of the substrate 4, and a pair of fingers 16a are connected to these sliders 14a and 14b via finger brackets 15a and 15b. , 16b are attached so as to face each other.

One end of a return shaft 17 is fixed to one finger bracket 15a, and the other end passes through the other finger bracket 15b and extends for a predetermined length, with a stopper 18 at the tip. As described above, the hand section 11 is configured.

On the other hand, the tensioner assembly 1 is mounted on the slider 14b.
9 is placed. This tensioner assembly 19 is
By pinching the guide frame 13 from both sides, a predetermined load (tension) is applied to the slider 14b to restrict the movement of the finger 16b, and the structure is symmetrical with the guide frame 13 in between. , the specific structure of only one side is shown in FIG.

In FIG. 3, the tension arm 20 is attached to the slider 14.
It is rotatably supported by an indicator shaft 21 fixed on b, a tensioner 22 is fixed to one end thereof, and a spring post 23a is fixed to the other end. A spring 24 is stretched between this spring post 23a and a spring post 23b fixed on the slider 14b. The spring 24 urges the tension arm 20 to press the tensioner 22 against the guide frame 13 as shown by the broken arrow by a tensile force in the direction of the solid arrow. This biasing force causes the tension arm 20 to rotate around the support shaft 26, thereby bringing the tensioner 22 into pressure contact with the guide frame 13.
It is designed to apply pressure in cooperation with a tensioner (not shown) on the opposite side.

Referring again to FIG. 2, an endless chain 26 is connected to the link bracket 25 fixed to the slider 2a, and this endless chain 26 is provided along the guide frame 13 over the range of movement of the hand section 11. , is suspended between a drive sprocket 28 attached to the rotor of the transport motor 2'7 and a driven sprocket 30 supported by a bracket 29. Due to the above,
A linear drive mechanism 12 is configured to linearly drive the hand portion 11 holding the substrate 4.

The sensor dog 31 attached to the link bracket 25 blocks the optical path, thereby detecting the conveyance start position (arrow A position in FIG. 1) and conveyance end position (arrow B position in FIG. 1) of the hand section 11. A pair of detection sensors 32a and 32b are provided, and another pair of detection sensors 33a and 33b are provided inside the detection sensors 32a and 32b, respectively.

Of this pair of detection sensors 33a and 33b, the detection sensor 33a on the transport start position side detects the timing position at which the substrate discharge side lifter unit 9 (see FIG. 1), which has risen with the substrate 4 loaded thereon, starts to descend. , the detection sensor 33b on the conveyance end position side releases the grip on the conveyed substrate 4, and then detects the substrate supply side lifter unit 8 on which the substrate 4 is mounted (see FIG. 1).
These are provided to detect the timing positions at which the two start descending.

Next, a series of operations of the component mounting apparatus according to the present invention will be explained. In addition, component mounting machine 1, magazine supply bag W2,
As shown in FIG. 4, drive control of the transport motor 27, etc. in the lifter unit 8.9 and the return unit 10 is performed by a control section 34 constituted by a microconvenience controller or the like based on the detection outputs of various detection sensors. shall be carried out.

First, in FIG. 1, the board 4 is removed manually or by an unmanned vehicle.
When the magazine 5 containing an appropriate number of the substrates is loaded, the magazine supply device 2 transports the magazine 5 from the loading port to the substrate take-out section. When the control unit 34 receives a request signal for loading a board from the component mounter 1, it confirms that the conveyor part of the board supply side lifter unit 8 is in the lowered position by the detection output of the below-the-knee position detection sensor 35a, and controls the rotation of the conveyor. At the same time, a command signal for starting the process is output to the lifter unit 8, and at the same time, a command signal for feeding one board 4 to the magazine feeding device 2 is output. In response to this command signal, the magazine supply device 2 feeds the substrate 4 onto the conveyor of the substrate supply side lifter unit 8. The sent-out board 4 is conveyed by a conveyor, and is input into the parts actualizing device 11 via the relay conveyor 7a. After the substrate supply side lifter unit 8 transfers the substrate 4 to the relay conveyor 7a, it waits at the previous lowered position until the next command is received.

When the component mounting machine 1 finishes mounting components on the board 4, the component mounting machine 1 discharges the board 4 onto the relay conveyor 7b, and at the same time outputs a signal requesting input of the next board 4 to the control unit 34. do. The board 4 discharged from the component actualizing device a1 is conveyed onto the conveyor section of the board discharge side lifter unit 9, which is already rotating, via the relay conveyor 7b.

When it is confirmed by the detection output of the substrate discharge detection sensor 36 that the substrate 4 has been fed into the conveyor section, the control section 34
stops the rotation of the conveyor, and then confirms that the hand section 11 of the return unit 10 is at the A position by the detection output of the conveyance start position detection sensor 32a, and drives the elevator mechanism of the conveyor section upward. When the conveyor section rises and reaches the rising end and the rising position detection sensor 37b is activated, the control section 34 drives the transport motor 27 of the return unit 10 in normal rotation in response to the detection output of the detection sensor 37b.

In FIG. 2, the chain 26 rotates due to the normal rotation of the transport motor 27, and one slider 14a starts to move. At this time, since the other slider 1.4b is in a stopped state due to the static frictional force (load) exerted by the tensioner assembly 19, the finger 16a moves relative to the finger 16b and grips the substrate 4 between them. Furthermore, the chain 26 continues to rotate, and the slider 14a
When the moving force of the slider 14b exceeds the static friction force caused by the tensioner assembly 19, the slider 14b remains under a constant clamping force.
also move. When the hand portion 11 holding the substrate 4 moves by a certain distance, the detection sensor 33a is activated. The control unit 34 controls the substrate 4 in response to the detection output of the detection output 33a.
Board ejection side lifter unit 9 has been lifted up with
The container section is lowered until the lowering position detection sensor 35b is activated. The hand part 11 continues to move further,
When the conveyance end position is reached, the detection sensor 32b is activated.

Upon receiving the detection output of the detection sensor 32b, the control unit 34 stops driving the transport motor 21, and at the same time confirms that there is no board loading request from the component actual device 11 (the loading request is given priority), The rotation of the conveyor of the substrate supply side lifter unit 8 is stopped, and the lifting mechanism of the conveyor section is driven upward.

When the conveyor section rises and reaches the rising end and the rising position detection sensor 37a is activated, the control section 34 drives the conveyance motor 27 of the return unit 10 in the reverse direction in response to the detection output of the detection sensor 37a.

By reversing the conveyor motor 27, the finger bracket) 15
Although a regresses, the other finger bracket 15b
is stopped by the clamping force of the tensioner assembly 19, one finger 16a moves in the expanding direction, and the substrate 4
The substrate is released from its grip and placed on the conveyor section of the substrate supply side lifter unit 8 that has been raised in advance. The conveyor section carrying the board 4 descends, and first the lower position detection sensor 3
Return to the lower position where 5a is activated. Upon receiving the detection output of the detection sensor 35a, the control section 34 reverses the conveyor section of the lifter unit 8, and at the same time issues a command to the magazine supply bag W2 to store the substrate 4 in the magazine 5. In response to this command, the magazine supply bag W2 moves the magazine 5 to a position where the substrate 4 is stored again, and stores the substrate 4 being transported by the conveyor section of the lifter unit 8 in a predetermined position in the magazine 5.

Even after the grip on the substrate 4 is released, the transport motor 27 continues to rotate in reverse, and the return shaft 17 attached to the finger bracket 15a also moves in the transport start direction together with the finger bracket 15a.

Then, the stopper 18 attached to the tip of the return shaft 17 comes into contact with the finger bracket 15b, thereby moving the slider 14b to the tensioner assembly 1.
It moves by pulling while receiving the frictional force caused by 9. Eventually, the hand portion 11 reaches the transport start position, and the detection sensor 32a is activated. Upon receiving the detection output from the detection sensor 32a, the control section 34 stops the rotation of the transport motor 27.

By repeating the above operations, the boards 4 in the magazine 5 are sent out one by one to the component mounting device ll, and the boards 4 discharged after component mounting are transported to the board supply side by the return unit 10 and returned to the magazine 5. It will be stored.

Note that the return unit 10 shown in the above embodiment
The configuration is merely an example, and is not limited to this.

Further, in the above embodiment, when returning the board 4 after component mounting from the board discharge side to the board supply side, the conveyor sections of the lifter units 8 and 9 are raised/lowered. It is also possible to configure the hand section 11 to move up and down, and in short, any configuration is sufficient as long as it can transport the board 4 after mounting components from the board discharge side to the board supply side.

<Effects of the Invention> As explained in detail above, in the component mounting apparatus according to the present invention, the magazine supply device is provided on the upstream side of the component mounter, and the board ejected from the component mounter after component mounting is transferred to the board supply side. By transporting the board to the magazine and storing it in the magazine again, the magazine containing the board before component mounting and the magazine containing the board after component mounting can be loaded and unloaded at the same location, making it possible to carry out in-line processing. This means that it can be easily realized.

Furthermore, since only one magazine feeding device is required, whereas the conventional device requires two, the cost of the entire device can be reduced and the dedicated space can be reduced, and at the same time, the number of magazines can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing an embodiment of the present invention.
FIG. 3 is a perspective view showing a specific example of the return unit in FIG. 1, FIG. 3 is a perspective view showing the tensioner assembly in FIG. 2, FIG. 4 is a block diagram of the control system, and FIG. 5 is a conventional example. FIG. 6 is a plan view of FIG. 5, and FIG. 7 is a configuration diagram showing a case where the conventional device is inlined using various component mounting machines. 1... Component mounting machine, 2, 3... Magazine supply device. 4... Board, 5.6... Magazine 89.
- Lifter unit 10... Return unit, 1 12... Linear drive mechanism 16a 16b... Finger 19... Tensioner assembly 27... Conveyance motor, 34... Control section. 1... Hunt club

Claims (2)

[Claims] (1) Component mounting, in which a predetermined number of predetermined components are automatically mounted in a predetermined position on a supplied board and then ejected, and the board is transferred from a magazine containing a predetermined number of boards to the component mounting machine. a magazine supply means for supplying and taking in the board after component mounting and storing it in the magazine, and appropriately exchanging the magazine storing the board before component mounting with the magazine storing the board after component mounting; board supporting means on a board supply side and a board ejection side that are provided between the means and the component mounting machine and on the board discharge side of the component mounting machine and temporarily support the board; and a board support on the board discharge side. 1. A component mounting apparatus comprising: a board transport means for transporting a board from the board supplying means to the board support means on the board supply side. (2) The component mounting apparatus according to claim 1, wherein the substrate supporting means on the substrate supply side and the substrate discharge side are configured to be capable of lifting and lowering the substrates thereon.