JP2001024387A - Method for correcting part supply height position in tray feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a part supply height position correction method of a tray feeder that can correct a part supply height position accurately using a simple method. SOLUTION: When correcting the part supply height position of a withdraw part 5 in pickup in a tray feeder that withdraws a pallet by the withdraw part 5, that can be elevated from a magazine 4 and supplies it to a pickup position by a transfer head 12, the descent stop position of the transfer head 12 is aligned to the part supply level of a packaging device, the transfer head 12 is lowered on the withdrawal part 5 and is stopped at a part supply level. Then, the withdraw part 5 is made to be raised and brought into contact with a nozzle 12a of the transfer head 12 from below, the contact is detected by a contact detection means 12b, and the height position of the withdrawal part 5 in contacting is stored at a storage part 77 as the part supply height position, thus accurately correcting the part supply height position with the use of a simple method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray feeder for supplying electronic components stored in a tray to an electronic component mounting apparatus, wherein a component supply height position of a drawer when a transfer head picks up electronic components is determined. The present invention relates to a method for correcting a component supply height position in a tray feeder that matches a component supply level of an electronic component mounting apparatus.

[0002]

2. Description of the Related Art In an electronic component mounting apparatus, a method using a tray feeder is known as a method for supplying electronic components such as semiconductor chips. This tray feeder stores a plurality of trays each storing a plurality of electronic components in a flat shape in a container such as a magazine, sequentially removes the trays from the magazine according to the order of use, and supplies the trays to a pickup position of a transfer head. When connecting the tray feeder to the electronic component mounting apparatus, the component supply height position at which the transfer head of the electronic component mounting apparatus picks up electronic components from the tray feeder is adjusted to the component supply level on the electronic component mounting apparatus side. It is necessary to correct the component supply height position. Conventionally, it has been necessary to adjust the installation level of the tray feeder by manually measuring the level when connecting the tray feeder to the electronic component mounting apparatus.

[0003]

However, since the tray feeder is replaced at a high frequency according to the type of electronic component to be mounted, the component supply height is increased each time the tray feeder is connected to the electronic component mounting apparatus. The position correction work must be performed, and this work requires a great deal of labor and time, and when the height position correction is not performed with high accuracy, problems such as a pick-up mistake occur. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for correcting a component supply height position of a tray feeder, which can correct a component supply height position in a simple and accurate manner.

[0005]

According to a first aspect of the present invention, there is provided a method of correcting a component supply height position in a tray feeder, wherein the drawer unit is capable of moving up and down from a container storing a pallet holding a tray storing electronic components. In a tray feeder for supplying an electronic component, which pulls out a pallet and supplies it to a pickup position by a transfer head of an electronic component mounting apparatus, a component supply height of the drawer when the transfer head picks up an electronic component on the drawer. A method of correcting a component supply height position in a tray feeder that adjusts a position to a component supply level of an electronic component mounting apparatus,
Adjusting the lowering stop position of the transfer head to the component supply level, lowering the transfer head on the drawer to stop at the component supply level, and raising the drawer to move the transfer head. A step of contacting the nozzle of the mounting head from below and detecting this contact by a contact detecting means provided on the transfer head; and setting the height position of the drawer portion at the time of this contact to the component supply height position. And storing it in a tray feeder.

According to the present invention, the transfer head whose lowering and stopping position has been adjusted to the component supply level of the electronic component mounting apparatus is lowered onto the tray feeder, and the drawer is brought into contact with the nozzle of the transfer head. By storing the lever contact height position as the component supply height position, the component supply height position can be accurately corrected by a simple method.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1A is a perspective view of a tray feeder according to an embodiment of the present invention, FIG. 1B is a diagram showing a state where the tray feeder is connected to an electronic component mounting apparatus, and FIG. 2 is a side view of the tray feeder. FIG. 3 is a perspective view of a magazine and a drawer of the tray feeder, FIG. 4 is a plan view of a magazine and a pallet of the tray feeder, and FIG. 5 is a flowchart of a method of correcting a component supply height position in the tray feeder. is there.

First, the overall structure of the tray feeder will be described with reference to FIG. In FIG. 1A, a pallet supply mechanism having the same configuration is disposed on the tray feeder 1 symmetrically with respect to a center line CL. The pallet 3 is provided with a tray 2 in which a large number of electronic components are stored in a grid.
The pallets 3 are stored in the magazine 4 in a stacked state.
Two sets of magazines 4 are fixedly arranged in the vertical direction in each of the left and right pallet supply mechanisms, and on the electronic component mounting apparatus side of the magazine 4 (the near side in FIG. 1A),
A drawer 5 for pulling out the pallet 3 from the magazine 4 is arranged so as to be able to move up and down by a lift 7.

Above the upper magazine 4, there is provided a discharge portion 8 for accommodating electronic components discharged without being mounted.
Further, a replenishing unit 6 for retrieving a pallet on which an empty tray is mounted after the electronic components have been picked up and resupplying the pallets after replenishing the electronic components is disposed above the discharge unit 8. Each of the above elements is housed in a cover case 9, and a cover 10 that can be opened and closed is provided above the supply unit 6. Similarly, a door that can be opened and closed is provided on the rear side of the magazine 4 so that the magazine 4 can be mounted and removed and the pallet 3 can be stored in the magazine 4.

As shown in FIG. 1B, the tray feeder 1 is used in connection with an electronic component mounting apparatus 11. The ascending position of the drawer 5 is a pick-up position of the electronic component by the transfer head 12 of the electronic component mounting apparatus 11, and the tray 2 mounted on the pallet 3 pulled out of the magazine 4 raises the drawer 5. By letting
It is supplied to the pickup position of the transfer head 12. The electronic component picked up by the nozzle 12a of the transfer head 12 is mounted on the substrate 13 positioned at the mounting section.

Next, the structure of each part of the tray feeder will be described. In FIG. 2, the tray feeder 1 is a caster 20.
Frames 22, 23 are erected on a base member 21 supported by A and 20B so as to be able to move laterally. The elevating unit 7 having a motor 24 and a feed screw 25 is provided on the frame 22, and the drawer unit 5 is moved up and down by driving the motor 24. The motor 24 is controlled by the control unit 26. The storage unit 27 is connected to the control unit 26, and the storage unit 27 stores the height position of the drawer unit 5. By controlling the motor 24 by the control unit 26 based on the data on the height position, the drawer unit 5 can be stopped at the predetermined height position.

The transfer head 12 has the nozzle 1 during the lowering operation.
Contact detection means 12b for detecting that the lower end of 2a has contacted the surface of an electronic component or a pallet is provided. The timing when the contact detecting means 12b detects the contact of the nozzle 12a is detected by the control unit 28 of the electronic component mounting apparatus 11, and further transmitted to the control unit 26 of the tray feeder 1 connected via the communication unit 29. Is transmitted.
The control unit 26 detects the height position of the drawer unit 5 at the time of detecting the contact, and the height position is stored in the storage unit 27.

The component supply height position, which indicates the position in the height direction when the transfer head 12 supplies an electronic component to the electronic component mounting apparatus 11, is a position unique to each electronic component mounting apparatus 11, and is a tray. Feeder 1 is newly replaced with electronic component mounting device 1.
When the tray feeder 1 is used in combination, the height position of the drawer 5 of the tray feeder 1 at the time of ascending needs to be adjusted to the component supply height position.

A magazine accommodating portion 30 is fixed to the frame 23, and two magazines 4 are accommodated in the magazine accommodating portion 30. A door 31 is provided behind the magazine accommodating section 30 so that the magazine 4 can be mounted and removed. A discharge unit 8 and a supply unit 6 are provided above the magazine storage unit 30.

Next, the pallet 3 stored in the magazine 4 and the drawer 5 for pulling out the pallet 3 will be described with reference to FIGS. As shown in FIG. 3, a plurality of pallets 3 are stored in a magazine 4 in a rack (not shown). The pallet 3 has a tray 2 in which a large number of electronic components P are stored. Pallet 3
An engagement portion 3a having a notch is provided at a front end portion (left side in FIG. 3) of the.

In front of the magazine 4, there are provided two guide members 36 which extend vertically. A slide member 35 that slides along a guide member 36 is provided at the front end of the table 5a of the drawer unit 5 that moves up and down in front of the magazine 4, and the table 5a is positioned at a predetermined position with respect to the magazine 4. The ascent / descent operation is performed in a state where it is kept.

The drawer 5 has a pallet moving mechanism driven by a motor 34. When the motor 34 is driven, the moving block 32 reciprocates in the direction of the arrow on the table 5a. The moving block 32 is provided with two rollers 33, and the moving block 32 is reciprocated in a state where the rollers 33 are engaged with the notched portions of the engaging portions 3a of the pallet 3, so that FIG. As shown in the figure, the pallet 3 in the magazine 4 can be pushed into the magazine 4 and stored. In the reciprocating motion of the pallet 3, the position of the pallet 3 is regulated by the guide rail 37 provided on the table 5a and the guide member 36 vertically extending vertically.

The tray feeder for supplying electronic components is configured as described above, and the operation will be described below. First, a method of correcting the component supply height position performed prior to the electronic component mounting operation each time the tray feeder 1 is connected to the electronic component mounting apparatus will be described with reference to the flowchart of FIG. First, the transfer head 12 is moved to the electronic component mounting apparatus 11, where the transfer head 12 is lowered, and the descent stop position of the transfer head 12 is set according to the component supply level of the electronic component mounting apparatus (ST1). . Next, the transfer head 12 is moved onto the drawer 5, where the transfer head 12 is lowered, and the transfer head 12 is stopped at the component supply level set in ST1 (ST2).

Thereafter, the drawer 5 is raised to contact the nozzle 12a of the transfer head 12 from below, and the drawer 5 is detected by the contact detecting means provided on the transfer head 12.
Is detected to have contacted the nozzle 12a (ST3).
Then, the height position of the drawer 5 at the time of the contact is stored in the storage unit 27 of the tray feeder 1 as the component supply height position (ST4). Thus, the teaching process for correcting the component supply height position is completed.

Next, the subsequent mounting operation of the electronic component will be described. First, in FIG. 1, a pallet 3 in which electronic components are stored is stored in a predetermined storage position in a magazine 4. When the mounting operation by the electronic component mounting apparatus is started, the drawer unit 5 moves up and down to the height position of the pallet 3 of the predetermined electronic component. Next, as shown in FIG. 4, the pallet 3 is moved to the table of the drawer 5 by moving the movable block 32 to the mounting device side in a state where the roller 33 of the movable block 32 is engaged with the engaging portion 3 a of the pallet 3. Pulled out on 5a.

Thereafter, the drawer 5 rises to the component supply height position stored in the above-described teaching and stops.
In this state, as shown in FIG. 1B, the transfer head 12 of the electronic component mounting apparatus 11 moves onto the drawer 5, and the tray 2 mounted on the pallet 3 on the drawer 5 by the nozzle 12a. Then, the transfer head 12 moves onto the substrate 13 and mounts the electronic component on the substrate 13. In this mounting operation, the rising stop position of the drawer 5 at the time of supplying the electronic component is accurately corrected in the above-described teaching of the height position.
It is possible to reduce a mounting error due to a position defect at the time of suction in the mounting operation.

By performing such teaching, even if there is an error in the height position of the tray feeder 1 itself in the positioning or leveling work, these errors can be covered by correcting the height position on the data. .
For this reason, the leveling work conventionally used when connecting the tray feeder to the electronic component mounting apparatus can be simplified, the work load can be reduced, and the position correction accuracy can be improved.

[0023]

According to the present invention, the transfer head whose descent stop position has been adjusted to the component supply level of the electronic component mounting apparatus is lowered onto the tray feeder, and the drawer is lowered with respect to the nozzle of the transfer head. The contact height position is stored as the component supply height position by making more contact, so that the component supply height position can be accurately corrected by a simple method.

[Brief description of the drawings]

FIG. 1A is a perspective view of a tray feeder according to an embodiment of the present invention, and FIG. 1B is a diagram illustrating a state in which the tray feeder according to the embodiment of the present invention is connected to an electronic component mounting apparatus.

FIG. 2 is a side view of the tray feeder according to the embodiment of the present invention.

FIG. 3 is a perspective view of a magazine and a drawer of the tray feeder according to the embodiment of the present invention.

FIG. 4 is a plan view of a magazine and a pallet of a tray feeder according to an embodiment of the present invention.

FIG. 5 is a flowchart of a method of correcting a component supply height position in the tray feeder according to one embodiment of the present invention.

[Explanation of symbols]

 2 tray 3 pallet 4 magazine 5 drawer 7 elevating unit 11 electronic component mounting device 12 transfer head 12a nozzle 12b contact detection means 27 storage unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidehiro Saho 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Yasuhiro Kashiwagi 1006 Odaka Kadoma Kadoma City, Osaka Pref. Terms (reference) 3C030 AA12 AA15 AA21 5E313 AA02 AA23 DD03 DD13 DD22 EE03 EE22 EE24 EE35 FF01 FF31 FF33

Claims (1)

[Claims] An electronic component supply device for extracting an pallet from a container storing a pallet holding an electronic component stored therein, and for supplying the pallet to a pickup position by a transfer head of an electronic component mounting apparatus. In the tray feeder, when the transfer head picks up the electronic component on the drawer, the component supply height of the drawer is adjusted to the component supply level of the electronic component mounting apparatus. A correcting method, wherein a lowering stop position of the transfer head is adjusted to the component supply level, a step of lowering the transfer head on the drawer and stopping at the component supply level, To make contact with the nozzle of the transfer head from below, and a contact detection hand provided on the transfer head. A step of detecting the contact by,
Storing the height position of the drawer at the time of contact in the tray feeder as the component supply height position.