JPH05191086A - Electronic component feeding device - Google Patents

Abstract

PURPOSE:To provide a board feed device which can be enhanced in working efficiency to suck a board housed in a magazine without failure, where the board device feeds a component to a mounting equipment. CONSTITUTION:A transfer means 6 which transfers a magazine 9 where boards 8 are laminated in a tilted state, a suction head 5 which sucks the board 8, a shifting means 2 which shifts the suction head 5 from a board sucking station to a board feeding station, and a transfer means 4 which enables the suction head 5 to confront the sucked surface of the board 8 at a board suction station or the board 8 sucked by the suction head 5 to be kept parallel with a board placing plane at a feed station are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board supply device for supplying a board housed in a magazine to a mounting line for electronic parts, an electronic part mounting machine or the like.

[0002]

2. Description of the Related Art When mounting electronic components, a magazine containing the substrates is conveyed to a mounting line, an electronic component mounting machine, etc., and the substrates are taken out from the magazine by a substrate supply device and sequentially arranged on a mounting surface. Electronic components are generally mounted on this substrate.

As a substrate supply device of this type, the one shown in FIG. 7 has been conventionally used. This board supply device
The apparatus main body 50 is provided with the moving means 51 and the suction head 53, and is provided with a carrying means (not shown) for carrying the substrate storage case 55, a belt conveyor 54 for carrying out the substrate 8, and the like.

The moving means 51 moves the elevating arm 52 up and down, and an elevating mechanism is provided in an outer case 51 fixedly mounted on a base 50a of the apparatus body 50. This elevating mechanism is provided with a drive motor and the like, and the elevating arm 52 is moved from the substrate suction position to the substrate supply position by the rotational driving of the drive motor.

The suction head 53 has a support member 53a fixed to the elevating arm 52 and a pad 53b attached to the lower end thereof.
It is configured to adsorb at 3b.

The substrate storage case 55 is formed by vertically arranging a guide plate 55b on a flat plate-shaped base 55a, and the substrate 8 stacked on the base 55a by the guide plate 55b.
It is designed to prevent misalignment. The facing portion of the guide plate 55b is an outlet for the substrate 8.

The belt conveyor 54 is used for the lifting arm 5
Two units are arranged in parallel along the length direction of No. 2. The belt conveyors 54 are separated from each other when passing through the elevating arms 52 to form a gap, and after passing, the belt conveyors 54 are arranged close to each other in parallel. This belt conveyor 5
At the other end of 4, an electronic component mounter is arranged.

Thus, the substrate 8 is produced by the substrate supply device.
In order to supply to the electronic component mounter side, first, the substrates 8 are flatly stacked on the base 55a of the substrate storage case 55, and one end edge of the substrate 8 is brought into contact with the guide plate 55b to be laminated at a fixed position. deep. In this state, the substrate 8 is transported to the substrate supply device by the self-propelled vehicle and the substrate storage case 55 is transferred onto the base 50a.

Next, the two belt conveyors 54 are moved in the separating direction so that the elevating arm 52 can pass between the belt conveyors 54. Then, the moving means 51 is operated to lower the elevating arm 52 located above the belt conveyor 54 to above the substrate 8.
Here, when the pad 53b of the suction head 53 contacts the uppermost portion of the substrate 8, the substrate 8 is suction-held by the suction heads 53 by suction of the vacuum device.

Subsequently, the elevating arm 52 is raised above the belt conveyor 54 so that the belt conveyors 54 approach each other. After that, when the suction of the substrate 8 by the vacuum device is released, the substrate 8 is placed on the belt conveyor 54. The board 8 is supplied to the electronic component mounting machine by the board conveyor 54 carrying the board 8.

When the supply operation of the substrate 8 is repeated and the substrate 8 in the substrate storage case 55 is exhausted, the substrate storage case 55 full of the substrates 8 is carried in next.
The supply of the substrate 8 is continued.

[0012]

By the way, this type of substrate supply apparatus has a simple structure in which the substrates 8 are simply stacked and transported on the base 55a of the substrate storage case 55. When the self-propelled vehicle vibrates, the substrate 8 is placed on the base with the substrate 8 laterally displaced.

The substrate 8 generally has a large number of through holes, and the suction position of the suction head 53 is predetermined. Therefore, if the substrates 8 stacked as described above are laterally displaced, the pad 53b abuts on the through hole when the suction head 53 descends. Then, when the substrate 8 is sucked by the vacuum device, a vacuum state is not formed between the substrate 8 and the pad 53b, so that a suction error occurs.

If such a suction error occurs during the supply operation of the substrate 8, it is necessary to correct the positional deviation, and it becomes impossible to continuously supply the substrate 8, so that the mounting efficiency of electronic parts is significantly reduced. Was left.

An object of the present invention is to solve the above problems.

[0016]

In order to solve the above-mentioned problems, a substrate housing apparatus of the present invention comprises a carrying means for carrying a magazine for stacking and housing substrates in an inclined state, and a suction head for sucking the substrates. Moving means for moving the suction head from the suction position of the substrate to the supply position, and the suction head facing the suction surface of the substrate at the suction position of the substrate, and the suction head of the suction head with respect to the mounting surface of the substrate at the supply position. And a transfer means for keeping the substrates parallel to each other.

[0017]

With the above construction, since the substrates are stacked in an inclined state in the magazine, each substrate is always fixed by its own weight even if the substrates may be displaced from the fixed position when vibration is applied during the transportation of the magazine. Held in position.

When the magazine is conveyed to the suction position of the substrate in this state, the moving means moves the suction head to the suction position. At this time, since the transfer means causes the suction head to face the suction surface of the substrate, the uppermost substrate is sucked by the suction head without a suction error.

After that, when the moving means moves the suction head together with the substrate from the suction position to the supply position, the transfer means keeps the substrate of the suction head parallel to the mounting surface of the substrate.
Therefore, when the suction head releases the suction, the substrate is placed at an appropriate position without being displaced.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a substrate supply apparatus according to the present invention.

This substrate supply device is provided with a moving means 2, a sensor 3, a transfer means 4 and a suction head 5 in the apparatus main body 1, and a conveying means 6 for conveying a magazine 9 containing the substrate 8 and the substrate. Substrate unloading means 7 for unloading 8 to the electronic component mounter (not shown) side is provided.

The moving means 2 moves the lifter 11 up and down. As shown in FIG. 1, the moving means 2 comprises a lifter 11 and a lifting mechanism 12, and an operating portion (not shown) provided in the main body 1 of the apparatus. It is designed to be automatically operated by the control means. The lifter 11 is composed of a case body 13 and a delivery conveyor 14, and the delivery conveyor 14 is arranged above the case body 13.

The elevating mechanism 12 comprises a servo motor 15, pulleys 16 and 17, a screw rod 19, and the like.
It is arranged in a panel 10 that constitutes the apparatus main body 1.
The servo motor 15 is fixed to a support plate (not shown), and a pulley 16 is fixed to its shaft. A pulley 17 fixed to the pulley 16 and the screw rod 19.
A belt 18 for transmitting the rotation of the servo motor 15 to the screw rod 19 is stretched between the and.

The screw rod 19 is formed by cutting a screw screw, and is rotatably supported by a bearing between an upper plate (not shown) and a lower plate of the panel 10. And
A nut 20 fixed to the center of the lower portion of the case body 13 is screwed into the screw rod 19.

As a result, in the elevating mechanism 12, the servo motor 15 rotates forward and backward in response to the drive signal from the control means, and the screw rod 19 is interlocked to move the nut 20 up and down, whereby the lifter 11 moves. The case body 13 is moved up and down along the panel 10.

The sensor 3 is a position detector composed of a light projecting portion and a light receiving portion, and the light projecting portion and the light receiving portion are arranged on the upper portion of the panel 10 so as to face each other. The output of the light receiving section is given to the control means, and when the irradiation light from the light projecting section is received by the light receiving section, a detection signal indicating that there is no substrate is detected, and when no light is received, a detection signal indicating that there is a substrate is transmitted to the control means. Is output.

The height at which the sensor 3 is installed is the height of the substrate 8 when the magazine 9 full of the substrates 8 is placed on the lifter 11.
Is set to the detection position P slightly below the initial suction position where the suction head 5 sucks the uppermost substrate 8.

In this example, as shown in FIG. 6, the width W between the extension line of the detection position P and the initial suction position S is set as the suction range of the substrate 8, and this suction range is the substrate 8 having a thickness of 1 mm.
Is about 20 mm.

The control means is a microcomputer for controlling the operation of the entire apparatus, and when receiving the detection signal from the sensor 3, it judges that the substrate 8 is not present at the initial suction position S, and the elevating mechanism 12 is operated. Servo motor 1
5, a drive signal for raising the lifter 11 by a constant interval is sent. This rising width is set in advance corresponding to the width W.

This control means does not drive the elevating mechanism 12 with the detection signal indicating the presence of the substrate when the substrate 8 is first placed on the lifter 11, but the detection signal indicating the absence of the substrate is sent next. And lifter 11 is lifted. Then, when the detection signal indicating the presence of the substrate is sent again, the control for stopping the lifter 11 is repeated. After this, the lifter 11
When the final detection signal indicating that the upper substrate 8 has been exhausted is sent, the control for raising the lifter 11 to the upper limit position and then lowering it to the lower limit position is repeatedly performed.

The transfer means 4 includes a suction head 5 and a substrate 8
2 is moved from the suction position to the supply position, and is configured by including three shafts 21 to 23, a horizontal moving portion 24, an angle varying portion 25, and the like, as shown in FIGS. The shafts 21 to 23 are arranged in parallel between the columns 26 and 27 that form the apparatus body 1. The horizontal movement unit 24 is a conventionally known rodless cylinder, is slidably attached to the shafts 21 to 23, and has a suction position on the front end side of the shafts 21 to 23 and a supply position on the rear end side. Go back and forth between.

The angle varying section 25 is shown in FIGS. 1 to 4, and includes an air cylinder 28, a guide roller 29 and a cam 3.
It has 0. As shown in FIG. 4, the air cylinder 28 has a guide groove 28b and a shaft hole 28c in the upper part of the casing 28a.
And form. A support member 31 fixed to the lower portion of the rodless cylinder 24 is loosely inserted in the guide groove 28b. Further, the lower end 3 of the support member 31 is provided in the shaft hole 28c.
A support shaft 32 disposed on the air cylinder 2 is supported by the air cylinder 2
8 is rotatably supported.

The guide roller 29 is attached to the upper side wall of the casing 28a using a support fitting 29a. The guide roller 29 is a rodless cylinder 24.
When it is moved, it is guided by the cam 30 and is rotated to change the angle of the air cylinder 28.

The cam 30 is a plate having a base end 30a.
Is fixed to the column 26, and the tip 30b has the shafts 21-2.
3 extends along the length direction. On the lower surface of the cam 30, a sloping slope 30c is formed from the tip 30b to a midway portion, and the guide roller 29 rolls between the slope 30c and the thick base end 30a side. It is like this. By guiding the guide roller 29, the cam 30 moves the suction head 5 to the substrate 8 at the suction position.
The suction head 5 is kept horizontal so that the suction head 5 is parallel to the mounting surface of the substrate 8 at the supply position.

As shown in FIGS. 1 and 2, the suction head 5 has a pad 5b attached to the lower end of a support arm 5a, and an intake pipe from a vacuum device (not shown) is connected to the pad 5b. , The substrate 8 by the operation of the vacuum device
Is put on the pad 5b. The support arms 5a are rod-shaped, and four support arms 5a are arranged on the lateral arms 34 and 35. As shown in FIG. 3, the base ends of the horizontal arms 34 and 35 are fixed to both ends of the vertical arm 33, respectively. The center of the vertical arm 33 is at the center of the air cylinder 28.
The horizontal arms 34 and 35 are fixed to the shaft of the moving means 2 and extend to the lifter 11 side of the moving means 2.

The suction head 5 is composed of the lateral arm 3
Instead of the above-described example in which the rod-shaped support arm 5a is fixedly mounted on the shafts 4 and 35, the plate-shaped support arm 5c may be rotatably supported by a support shaft. This allows the lateral arm 3
By moving the support arm 5c together with 4, 35 in the direction of the arrow to freely change the suction position of the substrate 8, the pad 5b can be prevented from facing the position of the through hole formed in the substrate 8 and the suction of the substrate 8 can be prevented. It is possible to make sure.

As shown in FIG. 1, the carrying means 6 comprises a carry-in conveyor 36 and a carry-out conveyor 37.
The carry-in conveyor 36 is at the bottom of the and the carry-out conveyor 37 is at the top.
Are arranged respectively. Then, the carry-in conveyor 36
While the full magazine 9 is carried into the lifter 11 at the lower limit position of the lifter 11, the carry-out conveyor 37 discharges the empty magazine 9 at the upper limit position.

The substrate unloading means 7 comprises a mounting table 38 and a belt conveyor 39 disposed on the mounting table 38. The mounting table 38 has four columns 38a which make the height of the belt conveyor 39 substantially the same as the suction position of the substrate 8. Supported by. The upper surface of the belt conveyor 39 is a surface on which the substrate 8 is placed, and the substrate 8 that is driven by the belt conveyor 39 and drops from the suction head 5
To the electronic component mounter side.

As shown in FIG. 5, the magazine 9 has 2
A top plate 43 and a bottom plate 44 are fixedly formed on the guide plates 40, 40 and the left and right side plates 41, 42. An inclined plate 45 is fixed to the upper surface 44a of the bottom plate 44 so as to extend in the width direction. When the substrates 8 are placed on the inclined plate 45 in a stacked manner, one end edge of each substrate 8 is guided by the guide plate 40. , 40
And are stacked in an inclined state. Reference numerals 41a and 42a denote sensor windows formed on the left and right side plates 41 and 42, respectively, so that the irradiation light from the light projector can be received by the light receiver. The opposing portions of the guide plates 40, 40 are outlets for the substrate 8 into which the suction head 5 is inserted.

Next, a supply operation for supplying the substrates housed in the magazine to the electronic component mounting machine will be described.

First, a large number of substrates 8 are stacked on the magazine 9. Since the magazine 9 is provided with the inclined plate 45, all the substrates 8 are held in an aligned state without being displaced at a fixed position where one edge of the guide plate 40, 40 abuts. The full magazine 9 is usually conveyed to the substrate supply device side using a self-propelled vehicle. When the magazine 9 arrives at the transport means 6, it is transferred from the self-propelled vehicle to the carry-in conveyor 12 and then placed on the lifter 15 at the lower limit position.

By the way, even if vibration is applied while the magazine 9 is being conveyed by the self-propelled vehicle or the carry-in conveyor 12, since the substrates 8 are stacked in the magazine 9 in an inclined state, each substrate 8 has its own weight. Since they move to a fixed position while sliding relative to each other, they can be stored and held without jumping out of the magazine 9 or being left out of position when vibrating as in the case where the substrates 8 are simply stacked flat on the magazine 9. Has been done.

When the full magazine 9 is placed on the lifter 15, the irradiation light from the light projecting section is blocked, so that the light receiving section outputs a detection signal indicating that the substrate is present. When the control means receives this detection signal, it determines that the substrate 8 is placed at the suction position (between the detection positions P and W in FIG. 6) and operates the transfer means 4.

The rodless cylinder 24 of the transfer means 4
When is moved from the supply position to the suction position, the air cylinder 28 and the lateral arms 34, 35 gradually bend forward by the cam 30 at this suction position, and the suction head 5 is inserted into the magazine 9.

Then, the horizontal arms 34 and 35 are parallel to the uppermost substrate 8 and the pad 5b faces the substrate 8.

When the vacuum device is operated, the uppermost substrate 8 is sucked by the pad 5b. At this time, the substrate 8
Since the pads are held in a fixed position without being displaced from each other, the pad does not come into contact with the through hole portion of the substrate 8, so that the uppermost substrate 8 is sucked by the suction head 5 without a suction error.

When the rodless cylinder 24 retracts in this state, the cam 30 guides the guide roller 29, and the suction head 5 is parallel to the belt conveyor 39 which is the mounting surface of the substrate 8 at the supply position. Keep it level so that Then, when the air cylinder 28 lowers the suction head 5 at the supply position and the vacuum device releases the suction of the substrate 8, the dropped substrate 8 is conveyed to the electronic component mounter side by the belt conveyor 39.

When the above operation is repeated several times and a plurality of substrates 8 are supplied, when the uppermost portion of the substrates 8 reaches the height P of the solid line from the initial suction position S of the virtual line shown in FIG. The irradiation light from the light projecting unit is received by the light receiving unit. Then, since the detection signal indicating that there is no substrate is sent from the light receiving section, the control means determines that the substrate 8 has been supplied in a constant amount,
The lifter 15 is raised by a constant interval. As a result, the magazine 9 rises from the position P indicated by the solid line to the height S of the imaginary line, and subsequently, the operation of supplying a fixed amount of the substrate 8 is started as described above.

After this continuous operation, if no substrate 8 exists in the magazine 9, the detection signal of no substrate is output from the light receiving portion. At this time, it is determined that the magazine 9 on the lifter 11 has become empty, and the operation of exchanging the magazine 9 is started. The control means moves the empty magazine 9 to the upper limit position, transfers it to the carry-out conveyor 13, and loads the next full magazine 9 onto the lifter 11.

Subsequently, the above-mentioned substrate supply operation is started,
The substrate 8 is continuously supplied to the electronic component mounter without interruption. In this way, since the supply work is continued without a suction error of the substrate 8, a suction error occurs in the middle of the work and it is not necessary to correct the positional deviation of the substrate 8 as in the conventional case.

[0052]

As described above, according to the substrate supply apparatus of the present invention, since the substrates are stacked in the magazine in an inclined state, they are stored and held in a fixed position even if vibration is applied during the transportation of the magazine. Therefore, there is an advantage that the positional deviation as in the case of simply stacking the substrates in the magazine is prevented, and a suction error as in the conventional case is avoided when the substrates are sucked by the suction head.

Further, when the moving means moves the suction head from the suction position to the supply position, the transfer means keeps the substrate of the suction head parallel to the mounting surface, so that there is an effect that the substrate can be always placed at an appropriate position. is there.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a substrate supply device according to an embodiment of the present invention.

FIG. 2 is a side view showing essential parts of a transfer device and a suction head.

FIG. 3 is a plan view of a suction head provided in a transfer unit.

FIG. 4 is a front view showing a main part of a transfer device.

FIG. 5 is a perspective view of a magazine loaded with substrates.

FIG. 6 is an explanatory diagram of a magazine feeding operation.

FIG. 7 is an overall configuration diagram of a conventional substrate supply device.

[Explanation of symbols]

 1 Device Main Body 2 Moving Means 3 Sensors 4 Transferring Means 5 Suction Heads 6 Conveying Means 8 Substrates 9 Magazines

Claims (1)

[Claims] 1. A transport means for transporting a magazine for stacking and storing substrates in an inclined state, a suction head for suctioning the substrate, and a moving means for moving the suction head from a suction position of the substrate to a supply position. A substrate supply device comprising: a suction unit facing the suction surface of the substrate at the substrate suction position; and a transfer unit that keeps the substrate of the suction head parallel to the substrate mounting surface at the supply position.