JPS60167816A - Pc substrate conveyor - Google Patents

Abstract

PURPOSE:To facilitate the inversion/non-inversion control by providing an inverter with a chuck unit of both edges of a PC substrate in the middle of a PC assembly line conveyor and switching the inverter for inversion/non-inversion control. CONSTITUTION:When a PC substrate 2 is conveyed and a photo sensor B detects it, if a transfer switch 43 is set automatic, a chuck claw 31 is operated to hold both edges of the PC substrate 2, and a belt 11 is stopped. Then, a rotation inverter 29 is driven to rotate the chuck claw 31 by 180 deg. via a shaft 30, and the PC substrate 2 is turned over and is mounted on a transport belt 12. Next, the belt 12 is driven by a motor 19 to release the chuck claw 31. Then, when the PC substrate 2 is detected by a photo sensor C, the inverter 27 is returned to its original position. According to this constitution, the inversion/non-inversion control can be performed easily in consistency with the process.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a PC board transfer device in a 5PC PC board line.

Conventional technology In recent years, various products have become electronically controlled.

A PC board incorporating LSL, IC1 resistors, etc. is mounted. In this case, in order to meet the demand for compactness and cost reduction on the product side, PC boards are also required to be compact and cost down through high-density packaging. Therefore, the PC
As before, semiconductor components such as ICs and resistors are mounted on the surface component side of the board.

Chip components are mounted on the solder side of the back side. In order to carry out such processing, it is effective to mount the chip components on the PC board in the PC board automatic assembly line and then turn the PC board upside down before sending it to the auto-inserter process.

Therefore, conventionally, a reversing device is provided which receives and grips the front edge of a PC board being conveyed midway on a conveyor and rotates it 180'' to turn the PC board over. As a result, the PC board flowing on the conveyor is always transported in reverse. However, unlike before, the PC board running on the automatic assembly line has no chip components and has semiconductor components only on the component side of the front surface. There are still some things that will be implemented, such as P
There is no need to reversely transport the C substrate. As a result.

When conveying such PC boards that do not require reversal, the work is done by replacing the conveyor, which is a hassle.

For this reason, in order to automate the PC board assembly line, we have installed an assembly line with a reversing function and an assembly line without a reversing function, as described above. Select the line and select Sera 1-
There is a method that does this, but it increases the size and cost.

OBJECTS The present invention has been made in view of the above points, and an object of the present invention is to provide a PC board transport device that can easily perform reversal transport or non-reverse transport depending on the assembly specifications of the PC board.

composition An embodiment of the present invention will be described based on the drawings.

FIG. 1 schematically shows a part of a PC board assembly line, in which a PC board 2 is sent by a pre-stage transport device 1 after pre-processing such as mounting of a chip part is carried out, and then transferred to a transport device 3. The magazine rack 4 is transported by the transport device 13, pushed out by a pusher device (to be described later), and stored in the magazine rack 4, and the magazine rack 4 is repeatedly lowered step by step by the rack lifting bag v115 and the PC board 2 is transported as described above. When the magazine rack 4 is full of PC boards 2, the magazine rack 4 is sent to the next process such as the re-auto inserter process by a magazine rack transport device [6].

Here, the configuration of the conveyance device 3 is shown in FIG. This transport device 3 is mainly composed of a transport conveyor 10, and this transport conveyor IO is formed by disposing a carry-in belt 11, a carry-out belt 12, and substrate guide rails 13, 14 in front and rear stages spaced apart from each other. Carrying in ``''The belt 11 is connected to the motor 15
It is driven by a belt 16, pulleys 17, 18, etc.

Similarly, the unloading belt 12 is driven by the motor 19 to rotate the belt 20,
It is driven via pulleys 21, 22, etc.

In addition, the carry-in belt 11 on the left side as seen in the direction of movement of the PC board 2
However, the board guide rail 13L is fixed in position and serves as a reference, but the board guide rail 13i on the right side is fixed to a movable plate 24 that can slide freely along the support shaft 23. knee 2
By turning 6, the left side carrying belt 11 is moved forward and backward with respect to the board guide rail 13L along with the carrying belt IIR, and the interval between them can be variably adjusted according to the width of the PC board 2. The same applies to the rear-stage unloading belt 12 and the board guide rail 14 side, so the same reference numerals are given and the explanation thereof will be omitted.

Thus, a reversing device 27 is provided between the carry-in belt 11 and the carry-out belt 12. This reversing device 27 consists of a chuck device 28 and a rotation reversing device 29. The chuck device 28 is of an air chuck type and is composed of a chuck claw 31 rotatable around a shaft 3o. The chuck claws 31 consist of a pair arranged oppositely on the left and right in correspondence with the carry-in belt 11 etc., and are capable of gripping both sides of the PC board 2 being transported with air. The chuck claw 31L is set and arranged so that it can be passed through and conveyed as it is, but the chuck claw 31L is set in a fixed position, but the chuck claw 31R is set so that it can move forward and backward with respect to the chuck claw 31L to adjust the distance between them. . On the other hand, the rotation reversing device 29 with a built-in clutch can rotate the chuck claw 31 by 180 degrees via the shaft 3o, and has its drive source main body on the right side, and the left side is the shaft 32, pulley 33, . They are connected by a belt 34 and a pulley 35.

Further, reflective photosensors A, B', and C for detecting the PC board 2 are provided at the entrance position of the carry-in belt 11, the position corresponding to the chuck claw 31, and the exit position of the carry-out belt 12, respectively. Furthermore, on the carry-out belt 12 side, although normally retracted below the conveyance surface of the PC board 2, there is a piston mechanism 3.
A pusher 37 is provided which, when pushed by the pusher 6, protrudes from the transport surface and pushes the rear end of the PC board 2 to push it out and accommodate it in the magazine rack 4.

On the other hand, FIG. 3 shows an operation panel 38 provided at the front of the apparatus. 39 is a power switch for AC input, and when it is turned on, a power lamp 40 lights up.

Reference numeral 41 denotes a push-button operation preparation switch, and when it is turned on, an operation preparation lamp 42 lights up. Reference numeral 43 is a knob-type selector switch that is used to make settings for controlling the operation of the reversing device 27.The "auto" setting performs reversing, and the "bypass" setting disables reversing. This allows the transport of Note that "each" is for setting when testing the operation of each function. 44 is a start switch, and when it is turned on, the running lamp 4 is turned on.
5 lights up, and the switch 43 waits in the setting state. Reference numeral 46 denotes a cycle stop i-switch, and when it is turned on, one cycle of transport operation from loading to unloading is executed and then stopped. 47 is an emergency stop + h switch.

The bush immediately stops the device. In addition, the carry-in conveyor switch, etc. provided on the right side is the changeover switch 4.
It is valid only when it is set to "each individual" by 3, and is operated when performing an operation confirmation test of each function.

In such a configuration, after adjusting the position of the side toward the chuck claw 31 according to the width of the PC board 2 to be used, the loading belts 11R, 111, the output belt 12R1, the board guide rail 13
The positions of the R and 14R sides are adjusted using the handle 25 and fixed.

Now, let us consider the case where a PC board 2 on which chip components are mixed is used. At this time, the operator presses the selector switch 43.
``Automatically set J8.And.''

Turn on the power switch 39, start switch 4, etc. to enter a standby state. Therefore, the chip parts 5 are
When the PC board 2 on which PC board 0 is mounted is carried to the transport conveyor 10 side and the leading end is detected by the photosensors A 0 and N, the drive of the carry-in belt 11 is started by the motor 15. As a result, the PC board 2 is moved to the board guide rail 13.
It is conveyed by the carry-in belt 11 while being guided by. As this conveyance progresses, the tip of the PC board 2 becomes the photo sensor B.
is detected, the selector switch 43 is now set to
Therefore, the chuck claws 31 air chuck the front ends of both side edges of the PC board 2 that have progressed to the chuck claw 31 portion. and.

The carry-in belt 11 stops. The PC board 2 gripped by the chuck claws 31 in this manner is rotated and reversed by a rotating/reversing device! !
29, the chuck claws 31 are rotated 180° via the shaft 30, and the PC board 2 is turned over and placed on the carry-out belt 12, as shown in FIG. 4(b). That is, the component side is the top surface. Then, the unloading belt 12 starts to be driven by the motor 19, and the chuck of the PC board 2 by the chuck claws 3I is released, and the PC board
The substrate 2 is conveyed by the carry-out belt 12 while being guided by the substrate guide rails 14 in an upside-down state. Therefore, when the tip of the PC board 2 is detected by turning on the photosensor C, the reversing device 27 such as the chuck claw 31 returns to the initial state. When the conveyance of the PC board 2 further progresses and the passing of the rear end of the PC board 2 is detected by turning OFF the photosensor C, the drive of the carry-out belt 12 is stopped and the pusher 37
is driven by the piston mechanism 36 to push the rear end of the PC board 2, and the PC board 2 is pushed out and stored in the magazine rack 4. As a result, the magazine rack 4 is shifted one step downward in preparation for the next storage.

The same operation is repeated for subsequent PC boards 2, and when the magazine rack 4 is full of PC boards 2, the magazine rack 4 is sent to the auto-inserter process by the magazine rack transport device 6. At this time, the component side of the PC board 2 is the top side.

It can be directly sent to the auto-inserter process, and semiconductor components such as the IC1 resistor will be mounted in that process.

On the other hand, when considering the case where a PC board 2 without chip components is used, the changeover switch 43 is set to "bypass". As a result, when the PC board 2 is carried in and its tip is detected by the photosensor A, the carry-in belt 11
starts to drive and is transported. Even if the tip of the PC board 2 is detected by the sensor B, the changeover switch 43
is in the "bypass" setting, the reversing device [27 is inactive and the PC board 2 is not reversed, but simply passes through the chuck claws 31 as shown in FIG. 4(c), so the unloading belt 12 is immediately driven and transfer by this delivery belt 12 begins. Therefore, photosensor B is turned off.
When the passage of the rear end of the PC board 2 is detected by the
transported only by As the conveyance progresses, the photosensor C turns ON and then turns OFF, causing the PC board 2
When the passage of the rear end is detected, the drive of the carry-out belt 12 is stopped and the PC board 2 is pushed out and stored in the magazine rack 4 by the pusher 37 drive.

That is, the PC board 2 on which ICs and the like have been mounted and carried in with the component side facing up in the previous process is stored in the magazine rack 4 with the component side facing up, and is sent to the next process such as soldering.

That is, as shown in FIG. 4(,), the changeover switch 43 is set to
If it is set to "Automatic", the reversing device 27 such as the chuck claw 31 will operate to reverse the PC board 2 as shown in FIG. In this case, as shown in FIG.
will pass through. Moreover, FIG. 5 shows the operation of pushing out the PC board 2 from the carry-out belt 12.
), when the PC board 2 is being transported by the carry-out belt 12, the piston mechanism 36 does not operate and the pusher 3
7 is retracted downward, but when the rear end of the PC board 2 is detected by the photosensor C and the carry-out belt 12 is stopped, the piston mechanism 36 pushes out the bushing 37, so that the bushing 37 is at a substantially right angle. Then push the rear end of the PC board 2 so that it sticks out onto the transport surface, and then push the rear end of the PC board 2.
will be stored in the magazine rack 4. FIG. 6 is a flowchart of such operation control.

As described above, according to this embodiment, by simply selecting whether to operate or not operate the reversing device 27 using the changeover switch 43 using one transport device 3, PC boards without chip components (non-inverting ) as well as a PC board (reversed) having chip components can be dealt with arbitrarily and immediately, improving operability and facilitating setup.

Furthermore, conventionally, the motors 15, 19, etc. are always in a driving state, but according to this embodiment, the photosensors A,
Since it is automatically driven only when necessary based on the detection signals of B, C, etc., it is also possible to save energy.

Effects The present invention is configured in such a way that it is double connected, so that equipment costs and space can be reduced with a single device, and the PC board can be reversed by the reversing device by switching a changeover switch without the need to replace the device. By simply setting whether to invert or not invert, processing can be easily performed in accordance with the specifications of the PC board, such as the presence or absence of chip components.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic perspective view of a part of the assembly line, FIG. 2 is an enlarged perspective view of the conveyance device, and FIG. 3 is a front view of the operation panel. Figure, 4th
Figures (a) to (c) are schematic front views showing the action, and Figure 5 (,
Hb) is a schematic front view showing the extrusion action, and FIG. 6 is a flow chart. 2...PC board, 10...transport conveyor, 27...reversing device, 28...chuck device, 43...switching switch Applicant Rico Co., Ltd. - JLI Figure 35 Figure 50 Country

Claims (1)

[Claims] The PC board is installed in the middle of a conveyor that transports the PC board from the previous process to the next process so that the PC board can pass therethrough, and a chuck device that can grip both sides of the PC board is used to turn the PC board upside down. 1. A PC board transfer device comprising a reversing device and a changeover switch for switching between activation and non-operation of the reversing device.