JP4220041B2 - Substrate transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, when an electronic component such as a resistor, a capacitor, and an IC is automatically applied to a predetermined application point on a circuit board by an adhesive application device as a part of a surface mounting system of an electric circuit board. In addition, the present invention relates to a board transfer device for positioning and carrying out a circuit board on an electronic component mounting apparatus or the like as a part of a surface mounting system.
[0002]
[Prior art]
For example, FIG. 4 shows a substrate transport device in the case where an adhesive is applied onto a substrate by the adhesive application device as described above.
[0003]
The substrate transport apparatus 1 includes a carry-in belt 3 that sequentially supports a substrate 2 along the horizontal X-direction feed line while supporting both ends in the width direction, and a carry-out for carrying out the substrate 2 after finishing the adhesive application. A positioning belt which is arranged between the belt 4 and the carry-in belt 3 and the carry-out belt 4 and is movable in a direction orthogonal to the feed line in the X direction and continuous to the carry-in belt 3 and the carry-out belt 4 And a Y-direction moving unit 6 having 5.
[0004]
The Y-direction moving unit 6 moves in a direction perpendicular to the X-direction feed line in a state where the substrate 2 that has been carried onto the positioning belt 5 by the carry-in belt 3 is placed, and an adhesive application device ( After the adhesive is applied to a predetermined application point on the substrate 2, the substrate 2 is returned to the position between the carry-in belt 3 and the carry-out belt 4, and the substrate 2 is sent out to the carry-out belt 4.
[0005]
The carry-in belt 3, the carry-out belt 4 and the positioning belt 5 are arranged on both sides of the X-direction feed line of the substrate 2 and are arranged on the inner surfaces of a pair of left and right rail members 7 for positioning the substrate 2 on the belt in the width direction. Has been placed.
[0006]
Reference numeral 8 in FIG. 4 is a substrate tip sensor that is disposed at the exit end of the carry-in belt 3 and detects the tip of the substrate 2 sent by the carry-in belt 3, and 9 is sent on the carry-out belt 4. Each of the outgoing board sensors for detecting the tip of the board 2 is shown. The substrate tip sensor 8 and the exit substrate sensor 9 are reflective photoelectric sensors.
[0007]
In the substrate transport apparatus 1 as described above, the substrate 2 is carried in from the carry-in belt 3, and after the tip reaches the position of the substrate tip sensor 8, the substrate 2 is further carried for a predetermined time, and the substrate 2 is transferred onto the positioning belt 5. Then, the conveyance is stopped, the Y-direction moving unit 6 is moved in the Y-direction together with the substrate 2, the adhesive is applied by the adhesive application device, and then the positioning belt 5 is brought into the carry-in belt by the Y-direction moving unit 6. 3 and the carry-out belt 4 are returned to a position aligned, and the positioning belt 5 and the carry-out belt 4 are further driven to carry out the substrate 2.
[0008]
Here, when the substrate 2 is transferred from the carry-in belt 3 onto the positioning belt 5, a part of the substrate 2 is brought into the carry-in belt 3 side or the carry-out belt 4 side by overrun or tilting in the horizontal plane. If the Y-direction moving part 6 is moved in the Y direction while protruding, the substrate 2 or the rail member 7 is damaged, so that the substrate 2 is detected by the substrate front end sensor 8 or the exit side substrate sensor 9. When it is done, it is carried out and removed to the outside by the positioning belt 5 and the carry-out belt 4 and put into the carry-in belt 3 again.
[0009]
[Problems to be solved by the invention]
In the substrate detection method as described above, the substrate being conveyed has a wide variety of colors, shapes, and the like, and thus cannot be completely detected. In particular, when components are attached in advance to the back surface of the substrate, it has been impossible to detect the substrate with a reflective photoelectric sensor.
[0010]
Further, as described above, in the substrate transport apparatus having the Y-direction moving unit that moves the substrate in the Y direction, when the substrate protrudes toward the carry-in belt or the carry-out belt, the substrate cannot be detected and the Y is not detected. When the direction moving unit moves in the Y direction, or when the substrate moves in the Y direction by the Y direction moving unit, when a part of the substrate protrudes to the carry-in or carry-out belt side by changing the posture of the substrate, There has been a problem that the substrate or the transfer section may be damaged.
[0011]
The present invention has been made in view of the above-described conventional problems, and provides a substrate transfer device that can reliably stop a substrate being transferred on a Y-direction moving unit. Objective.
[0012]
[Means for Solving the Problems]
The present invention provides an X-direction transport device that transports a substrate along a horizontal linear transport path while supporting both ends in the width direction from below, and a part of the linear transport path in the X-direction transport apparatus. And a Y-direction moving section that is movable in a horizontal Y direction perpendicular to the substrate, and a substrate that is part of the linear conveyance path, rather than the X-direction tip of the Y-direction moving section. Each of the position adjacent to the front in the transport direction and the position adjacent to the rear in the substrate transport direction from the rear end in the X direction protrudes above the linear transport path to restrict the movement of the substrate in the X direction. The above object is achieved by providing an entrance side substrate detection member and an exit side substrate detection member whose tip is movable up and down between the detection position and a lower standby position that does not interfere with the substrate on the linear conveyance path. It is.
[0013]
Further, in the substrate transport apparatus, when the substrate on the linear transport path rises above a certain value above the linear transport path at the position in the substrate transport direction of the input and output side substrate detection members, A stopper plate that abuts against the plate to prevent its rise may be provided.
[0014]
Further, in the substrate transfer apparatus, the entry side and exit side substrate detection members are configured by operating rods of a fluid cylinder, and when the operation rods push up the substrate and abut against the stopper plate, the rise is prevented. The substrate detection signal may be generated.
[0015]
In the present invention, the substrate can be reliably stopped on the exit end portion of the carry-in belt and the positioning belt by projecting the substrate carry-out member when carrying the substrate. In addition, when the substrate is not detected on the carry-in and carry-out belt side, the substrate detection member is left in the protruding state, so that when the substrate on the Y-direction moving unit is moved in the Y direction, It can be prevented from sticking out.
[0016]
Further, when the stopper plate is provided above the carry-in belt and the carry-out belt, the substrate pushed up by the board detection member comes into contact with the stopper plate and rises when the substrate protrudes to the carry-in belt or carry-out belt side. Since it blocks, the presence or absence of the substrate can be determined.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
[0018]
As shown in FIG. 1, the substrate transport apparatus 10 according to the example of the present embodiment sequentially supports the substrate 12 along the horizontal linear transport path 14 in the horizontal X direction while supporting both ends in the width direction from below. It is arranged between the carry-in belt 16 to be transported, the carry-out belt 18 on the exit side, and the carry-in belt 16 and the carry-out belt 18, and the whole is in the Y direction orthogonal to the linear transport path 14. And a positioning belt 22 provided on the movable Y-direction moving unit 20.
[0019]
The positioning belt 22 when the carry-in belt 16, the carry-out belt 18, and the Y-direction moving unit 20 are at the position of the linear conveyance path 14 is composed of a pair of left and right endless belts that are aligned in the X direction. . Also, as shown in FIG. 2, these endless belts are supported horizontally and in parallel along the inner surfaces of the left and right rail members 16A, 16B, 18A, 18B and 22A, 22B, respectively. .
[0020]
Reference numerals 17, 19, and 23 in FIG. 1 denote drive pulleys for driving the carry-in belt 16, the carry-out belt 18, and the positioning belt 22. These drive pulleys 17, 19, and 23 are driven by a motor (not shown) controlled by a control device 30 (see FIG. 3) described later.
[0021]
Between the pair of left and right rail members 16A and 16B, the position of the X direction end on the Y direction moving portion 20 side of these rail members 16A and 16B, and the inside of the left and right rail members 16A and 16B in the Y direction A pair of entry-side substrate detection members 24 are arranged at positions adjacent to each other.
[0022]
In addition, a pair of exit side substrate detection members are located at the X direction end position on the Y direction moving portion 20 side of the carry-out belt 18 and at positions adjacent to the inside of the left and right rail members 18A and 18B in the Y direction. 26 is provided.
[0023]
The entrance side substrate detection member 24 and the exit side substrate detection member 26 include air cylinders 24A and 26A, operation rods 24B and 26B, timer switches 24C and 26C (see FIG. 3), respectively, and the operation rods 24B and 26B protrude. When the protrusion is not completed within a predetermined time from the start, a substrate detection signal is output from the timer switches 24C and 26C.
[0024]
When this substrate detection signal is output, the control device 30 operates so as not to start the movement of the substrate 12 in the Y direction by the Y direction moving section, and for example, issues a warning to the operator. .
[0025]
Above the carry-in belt 16 and the carry-out belt 18 and on the end adjacent to the Y-direction moving unit 20, the carry-in belt 16 and the carry-out belt 18 are connected from the upper ends of the rail members 16A, 16B, 18A, 18B. Stopper plates 32A, 32B and 34A, 34B projecting horizontally are provided at the upper positions.
[0026]
In this case, the amount of protrusion of each stopper plate 32A, 32B and 34A, 34B toward the central position in the width direction of the linear transport path 14 is set so as not to interfere with the tips of the operating rods 24B, 26B.
[0027]
Next, the operation of the substrate transfer apparatus 10 will be described.
[0028]
First, the air cylinders 24A and 26A in the entry side and exit side substrate detection members 24 and 26 are operated, and the operation rods 24B and 26B are protruded upward (detection positions), and the substrate 12 is moved by the carry-in belt 16. Then, the position of the tip of the transfer rod 24B is stopped.
[0029]
Next, after retracting the operating rods 24B and 26B (standby position), the substrate 12 is carried onto the positioning belt 22 by the carry-in belt 16, and the positioning belt 22 moves the substrate 12 within the Y-direction moving unit 20. Actuate to stop.
[0030]
Next, the air cylinders 24A and 26A in the entry side and exit side substrate detection members 24 and 26 are operated, and the operation rods 24B and 26B are protruded upward.
[0031]
At this time, if the substrate 12 protrudes from the positioning belt 22, one of the operating rods 24 </ b> B and 26 </ b> B comes into contact with the protruding portion of the substrate 12 and pushes it up.
[0032]
Stopper plates 32A, 32B and 34A, 34B are disposed so as to protrude above the carry-in belt 16 and the carry-out belt 18 at the positions of the entrance-side substrate detection member 24 and the exit-side substrate detection member 26. substrate 12 was above push up some, as indicated by a two-dot chain line in FIG. 2, the stopper plate 32A, 32B or 34A, to 34B abuts, more as the actuating rod 24B or 26B can not protrude upward To do.
[0033]
For example, if the substrate 12 protrudes toward the carry-out belt 18, the protrusion of the operating rod 26 </ b> B is obstructed, and the protrusion of the operating rod 26 </ b> B is not completed within a certain time after the air cylinder 26 </ b> A starts operating. The timer switch 26C is activated and a substrate detection signal is output.
[0034]
In response to the substrate detection signal, the control device 30 stops the Y-direction moving unit 20 to prevent the substrate 12 or the transfer device from being damaged. Or, if necessary, an alarm lamp or the like is activated to warn the operator.
[0035]
When the substrate 12 does not protrude on either the carry-in belt 16 or the carry-out belt 18, the operation rods 24B and 26B protrude completely, so that the timer switch 24C or 26C does not output a substrate detection signal. Therefore, the substrate 12 is moved in the Y direction while being placed on the positioning belt 22 by the Y direction moving unit 20.
[0036]
When the substrate 12 is moved in the Y direction by the Y-direction moving unit 20, the actuating rods 24B and 26B protrude upward, so that the substrate 12 is restricted from moving in the X direction, and the carrying-in belt 16 is controlled. Protrusion in the direction or the direction of the carry-out belt 18 can be prevented.
[0037]
The operation rod 24B on the carry-in belt 16 side stops the positioning of the subsequent substrate at a predetermined position when the subsequent substrate is fed, and the subsequent substrate is moved to the Y-direction moving unit 20 or the Y-direction moving unit 20. Can prevent collision with the substrate 12 being moved in the Y direction.
[0038]
When the substrate 12 on the positioning belt 22 returns to the original position by the Y-direction moving unit 20, the operating rods 24B and 26B are retracted to the standby position.
[0039]
As a result, the substrate 12 on the positioning belt 22 is carried out of the apparatus from the carry-out belt 18. Further, the substrate 12 that has been waiting on the carry-in belt 16 in a state in which the positioning is stopped by coming into contact with the operating rod 24 </ b> B is transferred onto the positioning belt 22.
[0040]
That is, the substrate 12 is fed by the carry-in belt 16 while the operation rod 24B is projected, and the operation rod 24B from which the tip is projected is stopped as a stopper, and the preceding substrate 12 is placed on the carry-out belt 18. When the operating rods 24B and 26B are moved to the standby position during the movement, the movement is performed on the positioning belt 22.
[0041]
In this way, it is possible to reliably detect the substrate 12 conveyed on the carry-in belt 16 and accurately adjust the timing of sending it out onto the positioning belt 22.
[0042]
As shown by a two-dot chain line in FIG. 1, a substrate tip sensor 36 is disposed in the vicinity of the entry-side substrate detection member 24 and the tip of the substrate 12 conveyed by the carry-in belt 16 is detected. The substrate 12 may be fed onto the positioning belt 22. In this case, the substrate positioning stop operation by the operating rod 24B is not necessary.
[0043]
In the example of the above embodiment, the operating rod 24B or 26B comes into contact with the protruding substrate 12 from below, lifts it, and makes contact with the stopper plates 32A, 32B or 34A, 34B. The switch 24C or 26C outputs the substrate detection signal. However, the present invention is not limited to this, and the substrate protruding by other means may be detected.
[0044]
For example, the projecting output of the actuating rods 24B and 26B is made extremely weak so that it can not project any more even when it comes into contact with a heavy object such as a substrate, or a touch sensor is attached to the tip of the actuating rods 24B and 26B. When this comes into contact with the protruding substrate, a substrate detection signal may be output.
[0045]
In short, the entry-side substrate detection member 24 and the exit-side substrate detection member 26 can detect the substrate that protrudes mechanically and can prevent the substrate from protruding to the entry or exit side when the substrate moves in the Y direction. Good.
[0046]
【The invention's effect】
Since the present invention is configured as described above, it is possible to reliably detect the protrusion of the conveyed substrate toward the carry-in belt or the carry-out belt, and the substrate protrudes onto the carry-in belt or the carry-out belt when moving in the Y direction. It has the outstanding effect that it can prevent.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a substrate transfer apparatus according to an example of an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 4 is a schematic perspective view similar to FIG. 1 showing a conventional substrate transfer apparatus.
DESCRIPTION OF SYMBOLS 10 ... Board | substrate conveyance apparatus 12 ... Board | substrate 14 ... Linear conveyance path 16 ... Carry-in belt 18 ... Carry-out belt 20 ... Y direction moving apparatus 22 ... Positioning belt 24 ... Incoming side board | substrate detection member 26 ... Outlet side board | substrate detection member 24A, 26A ... Air cylinders 24B, 26B ... Actuating rods 24C, 26C ... Timer switch 30 ... Control devices 32A, 32B, 34A, 34B ... Stopper plate

Claims (3)

An X-direction transport device that supports a substrate from below at both ends in the width direction and transports the substrate along a horizontal linear transport path, and a part of the linear transport path in the X-direction transport device is placed in a horizontal direction perpendicular to the X-direction transport device. In a substrate transport apparatus having a Y-direction moving unit that is movable in the Y-direction,
In a part of the linear transport path, a position adjacent to the front in the substrate transport direction from the front end in the X direction of the Y-direction moving unit, and a position adjacent to the rear in the substrate transport direction from the rear end in the X direction, Each tip can move up and down between a detection position that protrudes above the linear conveyance path to restrict movement of the substrate in the X direction and a lower standby position that does not interfere with the substrate on the linear conveyance path. The board | substrate conveyance apparatus provided with the entrance side board | substrate detection member and the exit side board | substrate detection member of this. 2. The substrate according to claim 1, wherein the entrance-side and exit-side substrate detecting members abut on the linear transport path at a position in the substrate transport direction when the substrate on the linear transport path rises above a certain value. And a stopper plate for preventing the substrate from rising. 3. The substrate according to claim 2, wherein the entry-side and exit-side substrate detecting members are configured by operating rods of fluid cylinders, and when the operating rod pushes up the substrate and contacts the stopper plate, the substrate is prevented from being lifted. A substrate transfer apparatus configured to generate a detection signal.

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