JP2001274592A - Tray supplying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray supplying apparatus which can speedily detect the presence or absence of trays and the state of mounting such as displacement and the like with a small number of sensors and can notify the operator. SOLUTION: Left sensors 36 and right sensors 37 are provided respectively on either end of the side opposed to a lifting box 21 of a supply stage 22 of the tray supplying apparatus 35. After the operator mounted trays 23 on the lifting box 21, the lifting box 21 is continuously moved from the starting point to the endpoint and the trays 23 are detected by respectively two sensors at ten points of placement between the starting point and the endpoint: at 0-5 mm, 10-15 mm,..., 90-95 mm. If both the sensors are turned on, the tray 23 is properly placed on the shelf. If both the sensors are turned off, there is no tray 23 on the shelf. If only one of the sensors is turned on, the tray 23 is displaced on the shelf. In response to the proper placement, an LED lamp corresponding to the shelf glows. In response to the displacement, the LED lamp flashes and in response to the absence of trays, the LED lamp does not glow.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray feeding device for detecting the presence or absence and displacement of a tray with a simple mechanism and reporting the detection result.

[0002]

2. Description of the Related Art Conventionally, a pallet on which electronic components are placed and accommodated is held on a plurality of trays, these trays are raised and lowered, and a desired electronic component is taken out of the pallet and supplied to a component mounting apparatus. There is a feeding device.

FIG. 7 (a) is a front view of such a tray supply device, FIG. 7 (b) is a side view thereof, and FIG. 7 (c) is a view showing the internal configuration with a protective cover removed. Figure, same figure
(d) is a figure which shows a tray and a pallet typically. Same figure
As shown in (a), (b) and (c), the tray supply device 1 includes a drive unit 2 and a supply stage 3. On the front of the drive unit 2,
A door 4 is provided, and the door 4 is provided with a window 5 and a handle 6.

The drive unit 2 of the tray supply device 1 has a control table 7 containing a drive system and a control system at the lower part, and a lift 8 connected to the drive system of the control table 7 is provided thereon. A lift box 9 is connected to the lift 8, and the lift box 9 is provided with a plurality of shelves (tray storage units). Each shelf is a rail shelf composed of a pair of rails, and the tray 11 is accommodated with both ends slidably supported by the rails. A pallet 12 is detachably mounted on each tray 11. On the pallets 12, predetermined electronic components 13 are placed and accommodated, respectively. At the front end of the tray 11, a hook 14 for taking the tray 11 out of the elevating box 9 is formed.

FIG. 8A is a front view showing a state in which the tray supply device 1 is connected to a component mounting device.
(b) is a side view thereof. As shown in FIGS. 3A and 3B, when the tray supply device 1 is connected to the component mounting device 15, the supply stage 3 of the tray supply device 1 is inserted into the component mounting device 15.

The component mounting device 15 has a work tower 17 movable vertically and horizontally above and below a main body base 16. The work tower 17 has a plurality of work heads 18 movable vertically.
It has. The main body base 16 is provided with two guide rails 19 provided with a conveyor belt at a lower portion, and the conveyor belt is located at a position upstream of a device arranged upstream of the component mounting device 15 on the line. The circuit board having undergone the process is carried in, and the carried circuit board is positioned by the guide rail 19.

The work head 18 of the work tower 17 sucks a desired electronic component 13 from the pallet 12 on the tray 11 drawn out to the supply stage 3 of the tray feeder 1, and applies the sucked electronic component 13 to a circuit board. Automatically mounted on. The conveyor belt conveys the circuit board after the component mounting process to a subsequent process disposed downstream of the line from the component mounting device 15.

[0008]

By the way, mounting of the tray 11 on the lifting box 9 of the tray supply device 1 described above;
That is, the operation of mounting the tray 11 on the rail shelf of the elevating box 9 is manually performed by the operator. However, if the mounting of the tray 11 to the elevating box 9 is performed manually as described above, an operation mistake often occurs that the user forgets to mount the tray 11 or mounts the tray 11 while being displaced from the rail shelf. .

If the user forgets to mount the tray 11, a warning is issued only when the electronic component 13 supposed to be mounted and stored on the pallet 12 of the tray 11 is issued. The operation is interrupted, the power supply of the drive system is turned off, the safety information display is confirmed, the cover of the tray supply device 1 is opened, and the mounting of the tray is performed again, which is a troublesome work time.

In addition, for example, if there is a misalignment such that the right end of the tray 11 to be mounted on the fifth stage of the rail shelf is inserted into the fifth stage shelf, and the left end is inserted into the sixth stage shelf.
When the user attempts to pull out the pallet 12 from the tray 11, the operation cannot be performed, and a warning message is also issued. In this case, after a series of operations from the suspension of the mounting operation to the opening of the cover, the recovery operation is performed. Therefore, there is a problem that much time is taken and the overall work efficiency is reduced.

Of course, by attaching a sensor to each rail shelf,
Although it is possible to detect the tray mounting state of each rail shelf, it requires a large number of sensors, so that the cost is too high, and the manufacturing process is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances,
An object of the present invention is to provide a tray supply device that detects the presence or absence of a tray and a mounted state such as a position shift at a high speed with a small number of sensors and notifies the operator of the state.

[0013]

SUMMARY OF THE INVENTION A tray supply device of the present invention holds a pallet on which electronic components are mounted on a tray accommodated in a tray accommodating portion, and supplies the electronic components on the pallet to a component mounting device. A tray supply device, a sensor for detecting the tray, a moving unit for vertically moving the sensor relative to the tray housing unit, and a moving unit for moving the sensor relative to the tray housing unit. And position determining means for determining the position of the sensor.

According to a second aspect of the present invention, the number of the sensors is one, and a predetermined position of the tray accommodating portion is determined based on a tray detection result by the sensor and a position determination by the position determining means. Is further provided with presence / absence determining means for determining whether or not the tray is present.

Further, for example, as described in claim 3, the number of the sensors is two, and based on the tray detection result by the sensors and the position judgment by the position judging means, the position of the tray in the tray accommodating portion is determined. The apparatus further includes a tray state determination unit that determines presence / absence and misalignment.

Further, for example, as set forth in claim 4, there is further provided a display means individually corresponding to the tray accommodating portion, and the display means is turned on when the tray is at a correct position, and is turned on at an incorrect position. It is configured to blink at certain times.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a perspective view schematically showing a connection state between a tray supply device and a component mounting device in the first embodiment, and FIG. 1B shows only the supply stage of the tray supply device. FIG. 2C is a perspective view showing the sensor taken out, and FIG. 2C is a schematic enlarged view of a sensor provided on the supply stage. The tray supply device 20 shown in FIG.
Only the lifting box 21 and the supply stage 22 are shown, and the configuration of the control unit of the drive unit, the lift, and the like are not shown.

On the supply stage 22, a tray 23 pulled out from a predetermined rail shelf of the lifting box 21 is placed, and a pallet 24 is held on the tray 23, and electronic components 25 are placed on the pallet 24. Are placed and housed.

The supply stage 22 of the tray supply device 20
Are the two guide rails 26a and 26 of the component mounting apparatus.
A large number of component supply cassettes are mounted on a component supply table (not shown) on the other side of the two guide rails 26a and 26b. FIG. 3A shows only the component supply port 31 of the component supply cassette.

Two guide rails 26 on the component mounting device side
a and 26b, a circuit board 27 is positioned. On the circuit board 27, two electronic components 25 sucked from the pallet 24 by two suction nozzles 28 are mounted.
Indicates a place where is placed. The suction nozzle 28
The illustration of a work tower, a work head, and the like that hold the information is omitted.

In the present embodiment, a 10 mm long pair of rails is provided inside the lifting box 21 of the tray supply device 20.
Ten steps of rail shelves are formed at intervals. Then, LED lamps 32 are arranged at positions corresponding to these rail shelves by the number of rail shelves. The lift box 21 moves vertically up and down as shown by the arrow A in FIG.

As shown in FIG. 1B, one sensor 33 is disposed at the center of the end of the other supply stage 22 facing the lifting box 21. Sensor 33
As shown in FIG. 3 (c), a reflection type comprising a light emitting unit 33-1 for irradiating light to a detection target and a light receiving unit 33-2 for receiving the irradiation light reflected from the detection target. It is composed of an optical sensor.

With respect to the sensor 33 on the supply stage 22 which is engaged with and fixed to the component supply table 29 of the component mounting apparatus, the vertical movement of the elevating box 21 from, for example, bottom to top causes the sensor 33 to move upward. Moves vertically relative to the lifting box 21 from above to below.

A control device mounted on an electronic circuit board is housed in a control table (not shown) of the tray supply device 20. Although not particularly shown, the control device includes a controller unit and an engine unit, and the controller unit includes a CPU.
(Central processing unit), ROM (read only memory),
It has an EEPROM (rewritable read memory), a data transfer circuit, etc., inputs and analyzes the output signal of the sensor, and analyzes processing data input from an input panel, a component mounting device, etc. The analysis result is notified to the engine unit.

The engine unit includes a CPU, a ROM, and the like.
On the input side, analysis result data and command signals from the controller unit are input, and on the output side, there are a plurality of motor drivers corresponding to a plurality of motors (not shown), and a drive system for transmitting the drive of the motors to each unit. A switching clutch driver, a sensor driving driver, an LED driving driver, and the like are connected.

The engine unit drives and controls each unit based on data, command signals, and the like from the controller unit to raise and lower the lifting box 21 to a desired position.
In addition to performing the operation of the general tray supply device 20 for moving the desired tray 23 up and down on the tray 2, the sensor 33 is driven by moving the elevating box 21 from the origin position to the movement end point position when inspecting the tray mounted state. Then, processing such as turning on or blinking the LED lamp 32 based on the detection result of the sensor 33 is performed.

FIG. 2 is a flowchart showing a processing operation by the above-described control device at the time of inspection of a tray mounted state. FIG. 3A is a diagram illustrating an example of a state of each unit at the time of inspection in a tray mounted state, and FIG. 3B is a diagram illustrating an example of an operation of the sensor 33. In the example shown in FIG. 3A, the mounting state of the tray 23 in the 10-level rail shelf while the lifting box 21 moves from the lowermost origin position to the uppermost movement end point position, and the detection scanning by the sensor 33 are performed. And a lighting example of the LED lamp 32 are shown. With reference to FIGS. 2 and 3 (a) and 3 (b), the processing operation of the control device at the time of inspecting the tray mounted state will be described below.

First, the lifting box 21 is moved to the origin position (0 m).
m) to start the movement from the movement end point position (100 mm) and drive the sensor 33, that is, the light emitting unit 33-1.
Is driven to emit light, and the output of the light receiving section 33-2 is set to a standby state in which the output can be recognized (step S1).

As described above, the lifting box 21 has 10
A 10-level rail shelf is formed at an interval of mm, and the tray 23 when the tray 23 is placed and accommodated on this rail shelf
Is about 5 mm in height. That is, when the tray 23 is correctly mounted on all the rail shelves of the lifting box 21, from the origin position of the lifting box 21 to the end position of the movement, between 0 mm to 5 mm, between 10 mm to 15 mm,. The trays 23 are placed and accommodated at ten positions between 90 mm and 95 mm.

Therefore, in order to detect whether or not the trays 23 are stored in these ten storage locations, the relative current position of the lift box 21 with respect to the sensor 33 is set between 0 mm and 5 mm and between 10 mm and 15 mm.
It is checked which of the 10 positions is between 90 mm and 95 mm. First, it is determined whether the distance is between 0 mm and 5 mm (step S2).

During this time, the lifting box 2 is set at each position.
If the detection of the presence / absence of the tray 23 is stopped by stopping the operation 1, the detection time takes too much time. Therefore, the lifting box 21 is moved up at a stretch from the origin position (0 mm) to the movement end position (100 mm). The relative positional relationship between the sensor 33 and the lifting box 21 at this time may be obtained from an encoder of a motor that drives a lift that moves the lifting box 21 upward, or is obtained from the speed and time of the lifting box 21. You may do it.

From the relative positional relationship between the sensor 33 and the elevating box 21 determined in this way, the sensor 33 can be used for the distance between 0 mm and 5 mm and between 10 mm and 15 mm as described above.
... It is determined whether or not it is located at any one of 10 positions between 90 mm and 95 mm (in the beginning, between 0 mm and 5 mm). Since the distance is always 0 mm to 5 mm at first (Yes in S2), the sensor 33 is subsequently turned on, that is, the light from the light emitting unit 33-1 reflected by the light receiving unit 33-2 of the sensor 33 hitting the side surface of the tray 23. It is determined whether it is turned on by receiving the irradiation light (step S3).

If the sensor 33 is on (S3
Is Yes), the tray 23 is mounted on the first rail shelf. In this case, the first LED lamp 32 corresponding to the first rail shelf is turned on (step S4), Move to the next processing step.

The first and fifth LEDs in FIG. 3 (a)
The lamp 32 is indicated by a black circle when it is lit, and the other LED lamps 32 are indicated by a white circle when it is turned off. Further, a tray 23 is mounted on the left rail shelf (not shown) corresponding to the first and fifth LED lamps 32, and the detection scanning trajectory of the sensor 33 (irradiation of the light emitting unit 33-1) is provided. A small black circle at the intersection of the light scanning line B and the end face of the tray 23 mounted on the rail shelf indicates that the light emitted from the light emitting unit 33-1 is reflected.

Returning to the flowchart of FIG. 2, the processing from step S5 to step S28, which is not shown, is performed for the above-described section between 10 mm and 15 mm,.
This is processing corresponding to eight locations between mm and 85 mm, and the processing from steps S29 to S31 illustrated in the flowchart is processing corresponding to the last location between sections 90 mm to 95 mm. The processing for these remaining nine places
The only difference is that the relative positional relationship between the sensor 33 and the elevating box 21 is carried out sequentially.
Other processes are the same as those in steps S2 to S4.

That is, immediately after the processing of steps S2 to S4 is completed, the lifting box 21 is moving between 6 mm and 9 mm, and therefore, steps S5, S8,.
In all of S26 and S29, the current position does not match the position to be detected and scanned, so the determination is "No".
In this case, the lifting box 21 is the final 100 m
It is determined whether or not it has reached the position m (step S3).
2) Since it has not been completed yet (No in S32), step S2
And repeat the steps from step S2 again.

Thus, when the lift box 21 comes between 10 mm and 15 mm in the next section, the position is determined in step S5 (not shown), and the sensor 33 is detected in step S6.
Is checked, and if the output of the sensor 33 is on, the LED lamp 32 is turned on in step S7 and the sensor 33 is turned on.
If the output is OFF, immediately the next section detection step S
It is repeated that the processing is shifted to 8 or less.

In this manner, the lifting box 21 is
By the time the batch movement of 0 mm is completed, the section detection is performed in step S29, which is the last section detection, the output of the sensor 33 is checked in step S30, and the ON / OFF of the tenth LED lamp 32 is determined. It is determined.

FIGS. 3A and 3B show that the first and fifth rail shelves are provided with the tray 2 on the rail shelf of the elevating box 21.
3 shows an example in which the trays 23 of the first and fifth rail shelves are detected by the sensor 33 in the processing of steps S1 to S32 described above.
3 is turned on, and based on this detection result, the first and fifth LED lamps 32 are turned on to indicate that the operator is informed.

As described above, in the tray supply device 20 of this embodiment, after the operator mounts the tray 23 on the elevating box 21, the operator uses only one sensor 33 and uses the elevating box 21.
Is simply moved from the origin position to the movement end point position at a time, and the presence or absence of the tray 23 in the lifting box 21 can be immediately known.

FIG. 4 is a perspective view showing only the supply stage of the tray supply device according to the second embodiment. still,
Other components of the tray supply device 35 are shown in FIG.
Is the same as the configuration of the tray supply device 20 shown in FIG. Therefore, in the present embodiment, the description will be made using the numbers of the components used in FIG. 1 as they are, except for the numbers of the sensors having slightly different configurations.

As shown in FIG. 4, the supply stage 22 of the tray supply device 35 in this embodiment has a left sensor 3 at both ends on the side to be opposed to the lifting box 21 (not shown).
6 and a right sensor 37 are provided. The left sensor 36 and the right sensor 37 are constituted by reflection optical sensors similar to the sensor 33 shown in FIG.

In this case as well, the supply stage 22 engages with the component supply table of the component mounting device and is fixed in position, and the tray sensor for the left sensor 35 and the right sensor 36 disposed thereon is provided. Moves up and down vertically. That is, both the left sensor 35 and the right sensor 36 move vertically relative to the lifting box 21.

FIG. 5 is a flowchart showing a processing operation at the time of inspection of a tray mounted state by the control device of this embodiment. FIG. 6A is a diagram showing an example of the state of each part at the time of inspection of the above-mentioned tray mounted state, and FIG. 6B is a chart showing an example of the operation of the left sensor 36 and the right sensor 37.
6A shows the mounting state of the tray 23 in the elevating box 21 moving from the origin position to the movement end position, the locus C of the detection scan of the left sensor 36, and the right sensor 37.
5 shows a locus D of the detection scan by the LED and an example of lighting of the LED lamp 32.

With reference to FIGS. 5 and 6 (a) and 6 (b), the processing operation of the control device at the time of inspecting the tray mounting state of the tray supply device 35 shown in FIG. 4 will be described below.
In this case, also in this case, one 10 mm interval
A tray 23 with a height of about 5 mm
Is mounted by an operator to be placed and stored on a shelf at a predetermined position.

First, the lift box 21 is moved continuously and continuously from the origin position to the movement end point without a break, and at the same time, the left sensor 36 and the right sensor 37 are driven to emit light from the respective light emitting units, and the light receiving unit 33- Wait for the output of No. 2 (step S101).

Next, from 0 mm to 5 mm from the origin position of the lifting box 21 to the end position of the movement, 10 mm to 15 mm
It is checked which of the ten positions between 90 mm and 95 mm the sensors 36 and 37 correspond to. First, it is determined whether the distance is between 0 mm and 5 mm (step S102).

Also in this case, the left sensor 36 and the right sensor 37
The relative positional relationship between the lift box 21 and the lift box 21 may be obtained from an encoder of a motor that drives a lift that moves the lift box 21 up and down, or may be obtained from the speed and time of the lift box 21. .

The relative positional relationship between the left sensor 36 and the right sensor 37 and the lifting box 21 determined in this manner is always confirmed to be always between 0 mm and 5 mm (Yes in S102). Subsequently, the state of the left sensor 36 or the right sensor 37 is determined (step S10).
3). That is, this is a process of determining whether or not the light receiving units of the left sensor 36 and the right sensor 37 are turned on by receiving the reflection of the irradiation light from the light emitting unit from the tray 23 or not.

If both the left sensor 36 and the right sensor 37 are ON (the left and right sensors are ON in S103), the tray 23 is correctly mounted on the first rail shelf. The first LED lamp 32 corresponding to the second rail shelf is turned on (step S10).
5).

FIG. 6A shows the state in this case, and the tray 23 (23-1) is mounted on the left rail shelf (not shown) corresponding to the first LED lamp 32. Have been. In FIG. 9A, small black circles shown at the intersections of the trajectory C of the detection scan of the left sensor 36 and the trajectory D of the detection scan of the right sensor 37 with the end face of the tray 23 (23-1) mounted on the rail shelf are shown. This indicates that the light emitted from the light emitting unit is reflected. The first LED lamp 32 is indicated by a black circle, indicating that the LED lamp 32 is lit.

After the above process, the process proceeds to the next process, which is not shown in FIG. Step S1 not shown
The processing from step 06 to step S137 is performed in section 1
.., 80 mm to 85 mm. The processing in steps S138 to S141 shown in the flowchart is processing corresponding to the last part in the section 90 mm to 95 mm. It is.

In these processes, only the relative positional relationship between the left sensor 36 and the right sensor 37 and the elevating box 21 is sequentially advanced.
This is the same processing as 105.

That is, the process loops to step S142, and in the second or subsequent processing cycle from step S102, the process for the sensor is performed in step S106, step S110, or step S114, which is the same as step S103. The position of the tray storage section is between 10 mm and 15 mm, and between 20 mm and 25 m
m or between the sections 30 mm to 35 mm, and if it is determined in the next step S107, S111 or S115 that both the left sensor 36 and the right sensor 37 are off (left and right) Co-OF
F), the tray 23 is not mounted on the second, third, or fourth rail shelf, and in this case, the process immediately proceeds to step S106 and subsequent steps. Therefore, in this case, the second, third or fourth L corresponding to the second, third or fourth rail shelf is used.
The ED lamp 32 does not light.

The second to fourth LED lamps 32 in FIG. 6A show the state at this time, and the white to white lights indicate the second to fourth LED lamps 32. It shows the state that it is doing. The rail 23 (not shown) corresponding to the fifth LED lamp 32 has a tray 23.
(23-2) is correctly mounted, and the fifth LED lamp 32 is lit correspondingly. This is the result of the lighting process of step S121 being performed in which it is determined that the left sensor 36 and the right sensor 37 are both on in step S119, and it is determined in step S118 that the interval is between 40 mm and 45 mm. is there.

Then, in the next processing cycle, it is determined in step S122 that the section is between 50 mm and 55 mm. Further, in the next step S123, if one of the left sensor 36 and the right sensor 37 is on and the other is off (only one of them is on), the sixth state in FIG.
Trays 23 that are mounted offset from the third and seventh positions
This is the state of (23-3), and in this case, step S12
At 4, the sixth LED lamp 32 blinks.

Further, in the next processing cycle, step S
At 126, it is determined that the interval is between 60 mm and 65 mm. Since the left sensor 36 is off and the right sensor 37 is on (only one of them is on) at the next step S127, the seventh LED lamp 32 is turned on at step S128. Flashes. The sixth and seventh LED lamps 32 are hatched in FIG.
This indicates that the D lamp 32 is blinking.

As described above, in the tray supply device 35 of this embodiment, also in this case, after the operator mounts the tray 23 on the elevating box 21, the operator uses the two sensors 336 and 37 and moves the elevating box 21 from the origin position to the end point. When the tray 23 is correctly mounted on the rail shelf, the LED lamp 32 corresponding to the rail shelf is turned on, and both ends of the tray 23 are shifted vertically. When mounted, two LEs corresponding to the two rail shelves whose ends are incorrectly mounted.
The D lamp 32 blinks.

Thus, the operator can move the lifting box 2
It is possible to immediately know whether or not the tray 23 is properly mounted on the tray 1 or which of the trays 23 is incorrectly mounted.

In the above embodiment, the LED mounting state is notified by lighting or blinking the LED lamp corresponding to each rail shelf of the lifting box, but the notification of the tray mounting state is not limited to this. Alternatively, the arrangement of the LED lamps may be cancelled, and instead the LED lamps may be displayed on a display device such as a monitor of a component mounting device.

[0061]

As described above in detail, according to the present invention, immediately after completion of the tray mounting operation, the mounting state such as the presence / absence of the tray or the displacement is detected at high speed with a simple sensor configuration, and the detection result is obtained. Alerts the user to correct the incorrect tray installation state before starting the component mounting work, resulting in troublesome work such as interrupting the component mounting work and re-arranging the tray. And the efficiency of component mounting work is improved.

[Brief description of the drawings]

FIG. 1A is a perspective view schematically illustrating a connection state between a tray supply device and a component mounting device according to a first embodiment,
(b) is a perspective view showing only a supply stage of the tray supply device, and (c) is a schematic enlarged view of a sensor arranged on the supply stage.

FIG. 2 is a flowchart illustrating a processing operation by a control device at the time of inspecting a tray mounting state of the tray supply device according to the first embodiment.

FIG. 3A is a diagram illustrating an example of a state of each unit when inspecting a tray mounting state of the tray supply device according to the first embodiment, and FIG. 3B is a table illustrating an example of an operation of a sensor;

FIG. 4 is a perspective view showing only a supply stage of a tray supply device according to a second embodiment.

FIG. 5 is a flowchart illustrating a processing operation by a control device at the time of inspecting a tray mounting state of a tray supply device according to a second embodiment.

6A is a diagram illustrating an example of a state of each unit at the time of inspecting a tray mounting state of the tray supply device according to the second embodiment, and FIG. 6B is an example of an operation of a left sensor 36 and a right sensor 37; Is a chart showing

7A is a front view of a conventional tray supply device, FIG. 7B is a side view of the tray supply device, FIG. 7C is a diagram showing the internal configuration without a protective cover, and FIG. It is a figure which shows typically.

FIG. 8A is a front view showing a state in which a conventional tray supply device is connected to a component mounting device, and FIG. 8B is a side view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tray supply apparatus 2 Drive part 3 Supply stage 4 Door 5 Window 6 Handle 7 Control stand 8 Lift 9 Lifting box 11 Tray 12 Pallet 13 Electronic component 14 Hook 15 Component mounting device 16 Main body base 17 Work tower 18 Work head 19 Guide rail Reference Signs List 20 tray supply device 21 tray storage section 22 supply stage 23 tray 24 pallet 25 electronic component 26a, 26b guide rail 27 circuit board 28 suction nozzle 29 component supply table 31 component supply cassette component supply port 32 LED lamp 33 sensor 33-1 light emission Unit 33-2 light receiving unit 34 reflected light 35 tray supply device 36 left sensor 37 right sensor

Claims (6)

[Claims] 1. A tray supply device for holding a pallet on which electronic components are mounted on a tray accommodated in a tray accommodating portion and supplying the electronic components on the pallet to a component mounting device, wherein the tray is detected. A moving means for vertically moving the sensor relative to the tray accommodating section; and a position judging means for judging a position of the sensor with respect to the tray accommodating section during a relative movement by the moving means. A tray supply device, comprising: 2. The apparatus according to claim 1, further comprising presence / absence determining means for determining whether or not the tray is located at a predetermined position in the tray accommodating section based on a tray detection result by the sensor and a position determination by the position determining means. The tray supply device according to claim 1, wherein: 3. The tray supply device according to claim 2, wherein the number of the sensors is one. 4. A tray state determining means for determining the presence or absence of the tray and a positional shift in the tray storage section based on a tray detection result by the sensor and a position determination by the position determining means. The tray supply device according to claim 1, wherein: 5. The tray supply device according to claim 4, wherein the number of the sensors is two. 6. The display device according to claim 1, further comprising a display unit corresponding to each of the tray storage units, wherein the display unit displays a corresponding display when the tray is in a correct position, when the tray is in an incorrect position, and when the tray is not present. The tray supply device according to claim 1, 2, 3, 4, or 5, wherein the tray supply device has an aspect.