JPH11197954A - Tray feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tray feeder capable of feeding a part of an ordinary type and also feeding a deformed part. SOLUTION: A clamper 30 is removably installed in a transfer stage part 12 adapted to slide longitudinally in the front end area of a supply stage 3 of a tray feeder. A transfer head 23 sucks a desired electronic part on a pallet 18 drawn out from an elevating tray rack 14 by a loader 26 and places the same on the clamper 30. The clamper 30 includes a clamp click 31 and a vacuum pad 32, and at the time of transfer a part with lead pins, an electronic part is sucked by the vacuum pad 32 in the rear of the front end area of the supply stage 3 to be temporarily fixed, and quickly moved forward. On the other hand, at the time of transfer-loading a part without lead pin, the part is gripped by the clamp click 31 to be temporarily fixed and quickly moved forward.

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 to a component mounting apparatus, and more particularly, to an overhang-type supply table for temporarily fixing and transferring electronic components to a supply position to the component mounting apparatus. And a tray feeder device having the same.

[0002]

2. Description of the Related Art Conventionally, there is a tray feeder device (hereinafter, referred to as a tray feeder) for supplying electronic components (hereinafter, simply referred to as components) to a component mounting device. The tray feeder feeds out a tray pallet on which components to be supplied are placed, to a position where the component mounting device can pick up the tray pallet.
Then, on the component mounting apparatus side, the work head moves to the position of the component to be picked up on the tray pallet and picks up the component directly from the tray pallet. By the way, such a tray feeder can supply a large amount of parts,
Although there is an advantage that the configuration is simple, since the configuration is simple, a dedicated configuration is required for each model of the component mounting apparatus to which the component is mounted, and there is a problem that versatility is lacking.

[0003] In order to meet the above-mentioned demands for versatility and to respond to recent demands for high-speed processing, a tray pallet on which parts are placed is pulled out to a position where the tray feeder itself can be picked up. The pick head once picks up the component, transfers it to a predetermined supply table, and moves the supply table to a position where the component mounting device can pick it. In this case, the component mounting device simply picks up a desired component by simply moving the working head to a certain position where the above-mentioned supply stand stops.

[0004] This tray feeder needs to hold and temporarily fix components on a moving supply table until components are picked up by the component mounting apparatus. The method was adopted. This method of holding components by suction has made it possible to satisfactorily hold and fix various existing components, such as QFP and SOP, and convey them to a supply position.

[0005]

However, in recent years,
The types of components are steadily increasing, and in such a case, in the case of supplying components by a tray feeder, for example, LSIs such as BGA and CSP having hemispherical lead electrodes (bumps) on the lower surface, and tapes of component cassettes It has been desired to be able to cope with the supply of odd-shaped components such as large connectors, which are somewhat difficult to supply. However, BGA, CS
Parts such as Ps and connectors cannot be held and fixed and transported by the suction method.

For this reason, the shape of the supply table is changed without using the suction method, or the transport speed by the supply table is reduced because the use of the suction method is unavoidable.
We dealt with different parts individually.

As described above, it has been difficult to freely supply from a normal type component to an irregular type component by one tray feeder without being affected by the mounting program on the component mounting apparatus side. And the versatility and high speed of the angle have been lost.

[0008] The object of the present invention is to solve the above-mentioned conventional situation,
An object of the present invention is to provide a tray feeder that can supply normal-type components and also can supply irregular-type components.

[0009]

The configuration of the tray feeder according to the present invention will be described below. First, a tray feeder device according to the first aspect of the present invention is a tray feeder device that supplies various types of electronic components to a component mounting device that mounts electronic components on a circuit board, and includes a plurality of types that temporarily fix the electronic components. A transfer table on which a clamper provided with a fixing device is detachably mounted, and a selection device for selecting a fixing device according to the shape of the electronic component to be transferred from the plurality of types of fixing devices of the clamper of the transfer table. And control means for controlling the transfer of the transfer table so that the electronic component is temporarily fixed by the fixing device selected by the selection means and the electronic component is supplied to the component mounting device. Is done.

A second aspect of the present invention is a tray feeder device for supplying various electronic components to a component mounting device for mounting electronic components on a circuit board, wherein the electronic components are temporarily stored. A plurality of clampers having a plurality of types of fixing devices for fixing, a transfer table for detachably mounting a clamper selected from the plurality of clampers according to the shape of the electronic component, and a transfer table for the transfer table. Selecting means for selecting a fixing device according to the shape of the electronic component to be transferred from the plurality of fixing devices of the clamper; and temporarily fixing the electronic component by the fixing device selected by the selecting device. And control means for controlling the transfer of the transfer table so as to supply the electronic component to the component mounting apparatus.

The plurality of types of fixing devices are configured as fixing devices respectively corresponding to QFPs, SOPs, connectors, deformed parts, and the like. The selection means is configured to operate automatically and to allow a manual selection instruction, for example, as described in claim 4.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1A, 1B, and 1C are external views of a tray feeder according to an embodiment.
(a) is a plan view, (b) is a front view, and (c) is a side view. 2 (a), 2 (b) and 2 (c) are external views showing a state in which the tray feeder and the component mounting device are connected. FIG. 2 (a) is a plan view and FIG. Is a front view, and FIG. 3 (c) is a side view.

As shown in FIGS. 1A, 1B, and 1C, the tray feeder 1 includes a main body (drive unit) 2 and a supply stage 3. As shown in FIG. 1 (b), a door 8 is provided in front of the main body (drive unit) 2, and the door 8 has a window 9 and a handle 1.
0 is provided. Also, supply stage 3
As shown in (a), a tool change section 11 and a transfer stage section 12 are provided.

As shown in FIGS. 2A, 2B and 2C, when the tray feeder 1 and the component mounting device 4 are connected, the supply stage 3 of the tray feeder 1 is moved to the position of the component mounting device 4. Inserted inside.

The component mounting device 4 is located above the main body base 5.
The work tower 6 includes a plurality of work heads that can move up and down, and that can move up and down. Two guide rails 7 provided with a conveyor belt are disposed on the main body base 5. When the component mounting apparatus 4 is placed on the line, the conveyor belt carries in the circuit board that has completed the processing in the preceding step and carries out the circuit board that has completed the component mounting processing in the component mounting apparatus 4 to the subsequent step. .

The work head of the work tower 6 of the component mounting device 4 sucks a desired electronic component from the transfer stage 12 of the supply stage 3 of the tray feeder 1 and mounts the sucked electronic component on a circuit board. .

FIG. 3A is a side view of the tray feeder 1 with the protective cover of the main body (drive unit) 2 removed, and FIG. 3B is a side view of the electronic components housed therein. It is a figure which shows the aspect of accommodation. As shown in FIG. 1A, the inside of the main body (drive unit) 2 of the tray feeder 1 is provided with a control box 13 including a drive system and a control system at the lower part, and a lift connected to the drive system of the control box 13 above this. 15 are provided. The lifting tray shelf 14 is connected to the lift 15.

The lifting tray shelf 14 has a plurality (usually 15).
The tray 16 shown in FIG. 1B is accommodated in each shelf, and a pallet 18 is detachably mounted on each tray 16. On the pallets 18, predetermined electronic components 19 are placed and accommodated, respectively. Tray 1
At the front end of the hook 6, a hook 17 for taking the tray 16 out of the elevating tray shelf 14 is formed.

FIG. 4 is a diagram showing the structure of the supply stage 3 and the engagement between the supply stage 3 and the lifting tray shelf 14. As shown in the figure, the supply stage 3 has Y-axis rails 21 on both sides. These Y
The U-shaped ends of a U-shaped X-axis rail 22 are engaged with the shaft rail 21.

The X-axis rail 22 is guided by the Y-axis rail 21 and is driven by a drive mechanism (not shown), so that a double-headed arrow A
And slide freely in the Y-axis direction as indicated by A '. The transfer head 23 engages with the X-axis rail 22 and is driven by a drive mechanism (not shown) to slide freely in the X-axis direction as shown by arrows B and B 'in the figure. Thereby, the transfer head 2
Numeral 3 is slidable in the XY axis directions in a work space above the supply stage 3. A pickup head 24 is attached to the transfer head 23 downward.

On the other hand, loader guides 25 are provided inside the Y-axis rails 21, respectively, and are located below the transfer head 23 in the center of the supply stage 3 so as to be sandwiched between the two loader guides 25. And loader 26
Is arranged. The loader 26 has two loader rails 27.
, And is driven by a drive mechanism (not shown) to slide back and forth (Y-axis direction) as shown by a double-headed arrow C in the figure.

The lifting tray shelf 14 moves up and down behind the sliding mechanism of the transfer head 23 and the loader 26. The elevating tray shelf 14 places the components desired by the supply stage 3.
The tray 16 to which the pallet 18 accommodated is stopped at a position corresponding to the loader 26.

The loader 26 slides on the loader rail 27 rearward (in the upper left direction in the figure) to slide the desired tray 16
After engaging with the hook 17 of FIG.
To pull out the tray 16 from the lifting tray shelf 14. The tray 16 is slidably supported on both lower surfaces by a loader guide 25, pulled out toward the center of the supply stage 3, and stopped below the XY-axis working space of the transfer head 23.

The tool change section 11 and the transfer stage section 12 described above are arranged in front of these, that is, in the front end area of the supply stage 3. The tool change section 11 includes a pickup head 24 of a transfer head 23.
The nozzle holding frame 29 moves up and down and left and right to facilitate attachment and detachment of the suction nozzle 28 to and from the pickup head 24.

A clamper 30 having a clamp claw 31 driven to be opened and closed by a small cylinder (not shown) is detachably mounted on the other transfer stage section 12. The transfer stage unit 12 engages with the transfer stage rail 20 and slides back and forth in the front end region of the supply stage 3 as shown by a double-headed arrow D in the figure.

In the transfer head 23, the currently mounted suction nozzle 28 is a suction nozzle 2 suitable for sucking an electronic component required by the component mounting device 4 as a host device.
If it is not 8, move to the tool change section 11 and
After returning the currently mounted suction nozzle 28 to the original position of the tool change section 11, the suction nozzle 28 suitable for the electronic component to be suctioned is mounted.

Suction nozzle 28 suitable for electronic components to be sucked
Is moved onto the pallet 18 of the tray 16 pulled out to the center, sucks desired electronic components, and then moves onto the transfer stage unit 12.
The transfer stage unit 12 moves behind the front end region of the supply stage 3 (the position shown in FIG. 4) and stops, and the clamper 30 mounted on the transfer stage unit 12 Open and waiting.

The transfer head 23 releases the sucked electronic component and mounts the electronic component at a predetermined position on the clamper 30. The transfer stage unit 12 selects an optimal holding device for holding the electronic component from a plurality of types of holding devices provided in the clamper 30, and holds and temporarily fixes the electronic component by the holding device. After that, the supply stage 3 is moved to the forefront end of the front end region, the holding of the holding device is released, and the electronic component is supplied to the work head of the work tower 6 of the component mounting device 4.

FIG. 5A is a perspective view for explaining the structure of the clamper according to the first embodiment, and FIGS.
(c) is a perspective view showing the operation state. As shown in FIG. 5 (a), the clamper 30 has clamp claws 31a and 31b which open and close as indicated by double-headed arrows H and H 'in the figure.
And a vacuum pad 32 at the center. The vacuum pad 32 includes a rubber pad and a suction port provided therein and connected to a vacuum pump (not shown) through a tube (not shown).

FIG. 5B shows clamp claws 31a and 31b.
FIG. 3C shows a state in which the component 33 without a lead pin is clamped and held.
This shows a state in which the components with lead pins are sucked and held from below by the vacuum pad 32 with 1b open. Thus, the clamp claws 31 (31a, 31b)
Alternatively, the vacuum pad 32 can be properly used to hold both the component 33 without the lead pin and the component 34 with the lead pin.

FIG. 6 is a diagram showing another embodiment of the clamper according to the first embodiment. The clamper 30 'shown in the figure opens and closes as shown by double-headed arrows J and J' in the figure, and the clamp claws 35 (35a, 35b) which are slightly wider are provided.
It has. And the base 3 on which the clamp claw 35 opens and closes
6, vacuum pads 37-1 and 3 on both sides, respectively.
7-2. These vacuum pads 37-
Position names of “lane 1” and “lane 2” are given to the arrangement positions of 1 and 37-2. In addition, between these vacuum pads 37-1 and 37-2,
That is, a cross-shaped mark 38 is provided at the center of the base 36, and the position name of "lane 3" is given to this mark position.

The above-mentioned clamp claw 35 (35a, 35b)
Is formed so that not only small but also large components without lead pins can be sandwiched and temporarily fixed.
On the other hand, in the case of a component with a lead pin, if it is small, it is sucked and held by one vacuum pad 37-1 or 37-2, and if it is large, it is two vacuum pads 37-1 and 37-2. Can be held by suction. In addition, when holding a very large connector or the like, it can be temporarily fixed easily by sucking the two vacuum pads 37-1 and 37-2 and holding it by the clamp claws 35a and 35b.

FIG. 7 is a block diagram showing the system configuration of the tray feeder 1 configured as described above. As shown in the drawing, the main control unit 42 of the tray feeder 1 includes a drive system for moving the transfer head 23 to a desired position on the X-axis rail 22 and an X-axis control system 43 including this driver. A control box 13 in which a drive system for moving the X-axis rail 22 to a desired position on the Y-axis rail 21, a Y-axis control system 44 including this driver, and a lift 15 for moving the lifting tray shelf 14 to a desired position are connected. Drive system, lifter axis control system 45 including this driver, loader 2
And a driver system for moving the transfer stage unit 12 to a predetermined position on the transfer stage rail 20, and a driver for moving the transfer stage 6 to a predetermined position on the loader rail 27; Stage control system 47 comprising vacuum pads 32 and 37-
1, 37-24, etc., the drive system of the vacuum pump valve for performing suction / release, and the driver, the drive system for opening and closing the clamp claws 31, 35, etc., and the driver and the nozzle holding frame 29 of the tool change section 11 are moved up and down. A drive system for moving left and right and another control system 48 including this driver and the like are connected.

The main control section 42 of the tray feeder 1 is further connected to a cover lock control system 49 which will be described later. The main control unit 42 receives signals such as an initialization command, a pick movement command, a pick command, and a supply command from the tray control system 41 of the main control circuit 40 of the component mounting apparatus 4 in the VME bus I / F ( Interface) 51. From the main control unit 42 of the tray feeder 1, an acceptance signal, a confirmation signal, a processing end notification signal, and the like are output to the tray control system 41 of the main control circuit 40 of the product mounting device 4 via the VME bus I / F 51. .

FIGS. 8 and 9 (a) and 9 (b) show the main control section 42 (hereinafter referred to as TF) of the tray feeder 1 in the above configuration.
9 is a flowchart illustrating an operation of a process of supplying an electronic component to the component mounting apparatus 4 under the control of a control unit 42). In this process, the clamper 30 'shown in FIG.
The description is made assuming that is used.

In FIG. 8, first, a component supply command is input to the TF control unit 42 from the tray control system 41 (hereinafter, referred to as the main body control unit 41) of the main control circuit 40 of the component mounting apparatus 4 (step S1). ). In this process, together with the component supply start command, the elevating tray shelf of the tray 16 (pallet 18) on which electronic components to be taken out (picked) from the tray feeder 1 to be mounted on the circuit board by the component mounting apparatus 4 is mounted. 14 and the position data (number indicating the number) of the electronic component to be picked up on the pallet 18 as arguments are the main body side control unit 41.
Is transferred to the TF controller 42.

In addition, the lane number of the clamper 30 'of the transfer stage 12 for temporarily fixing the electronic component is specified (step S2). Further, the transfer stage 12
Is fixed (step S3). In this process, the specified lane number (“lane 1”,
Fixing only by suction using a vacuum pad ("lane 2" or both) (vacuum method), or fixing only by gripping with a clamp claw at a mark position designated by "lane 3" (clamp method), or using the above vacuum pad Any one of the temporary fixing methods of the fixing by both the suction and the holding by the clamp claws (the combined use of the vacuum and the clamp) is designated.

The data of the fixed system may be passed as an argument from the main body side control unit 41 to the TF control unit 42 as described above, or the master information of the electronic component may be passed to the TF control unit 42 side. May be retrieved to obtain data of the fixed type regarding the electronic component.

The electronic components temporarily fixed on the transfer stage 12 mainly by the vacuum method are QFP,
This is a general-purpose component in which a lead pin such as an SOP extends outward from the side surface of the chip. If these electronic components are gripped by the clamp claws, the lead pins may bend and cause a problem. Therefore, suction transfer by a vacuum method is suitable.

On the other hand, electronic components temporarily fixed mainly by the clamp method are components commonly referred to as odd-shaped components such as BGAs, CSPs, and large connectors. Since many of these electronic components do not allow the suction portion to be set well on the lower surface of the chip, they are suitable to be conveyed by a clamp method in which the side surface is gripped by a nail. The electronic component temporarily fixed by the combined use of the vacuum and the clamp is a considerably large connector or the like.

In accordance with the instructions and designations in steps S2 and S3, the TF control unit 42 controls the lifter shaft control system 45 so that the elevating tray shelf 14 is moved to the tray 16 (barret 18) of the designated stage number. It is moved so as to reach the height of the supply stage 3 (step S4).

Subsequently, the loader axis control system 46 is controlled to
After moving the loader 26 to the rear of the apparatus to engage with the hook 17 of the tray 16 of the designated stage number, the loader 26 is moved to the front of the apparatus (step S5). As a result, the tray 16 (pallet 1
8) is pulled out to a predetermined drawing position.

Next, an X-axis control system 43 and a Y-axis control system 44
To control the transfer head 23 (the pickup head 2
4) is moved to the designated number position on the pallet 18 that has been pulled out, the other control system 48 is controlled, and the pickup head 24 sucks and picks up the electronic component (step S6).

Further, an X-axis control system 43 and a Y-axis control system 44
To control the transfer head 23 (the pickup head 2
4) is moved to the position of the specified lane number of the clamper 30 'of the transfer stage section 12 (step S7), and the other control system 48 is controlled to lower the pickup head 24 (step S7). Step S8). As a result, the center of the electronic component sucked at the tip of the suction nozzle of the pickup head 24 abuts on "lane 1,""lane2," or "lane 3" of the clamper 30 '.

Next, the stage is fixed (step S).
9). In this process, as shown in FIG. 9A, first, it is checked what the stage fixing method specified in the step S3 is (step S9-1). And if it is a clamp system, the other control system 48 is controlled,
The clamp claw 31 of the clamper 30 'is closed (step S9-2), and the process returns to the main process of FIG. As a result, the electronic component is gripped by the clamp claws 31 and temporarily fixed on the transfer stage unit 12.

If it is determined in step S9-1 that the stage fixing method is the vacuum method,
Subsequently, it is checked what lane number is specified in step S2 (step S9-4), and the other control systems 48 are controlled to control the vacuum pad ("") of the specified lane number. Vacuum pad 3 of "lane 1"
7-1, suction drive of the vacuum pad 37-2 of "lane 2", or both) (Step S9-5),
It returns to the main processing of FIG. As a result, the above electronic components are sucked by the vacuum pads 37-1 and 37-2 or both, and are temporarily fixed on the transfer stage unit 12.

When it is determined in step S9-1 that the stage fixing method is a combination of the clamp method and the vacuum method, the other control system 48 is controlled to close the clamp claws 31 and Then, the vacuum pad of the designated lane number is suction-driven (step S9-5), and the process returns to the main process of FIG. As a result, the above-described electronic component is gripped by the clamp claws 31 and adsorbed by the vacuum pads 37-1 and 37-2 or both, and is temporarily fixed on the transfer stage unit 12.

In any case, as described above, it is possible to transport and supply electronic components of any shape in a state where they are temporarily fixed well. Returning to FIG. 8 again, the other control system 48 is controlled to release the suction of the pickup head 24 (step S10). Thus, the suction of the electronic component temporarily fixed on the transfer stage unit 12 by the transfer head 23 is released.

Next, by controlling the stage axis control system 47,
The transfer stage section 12 is moved to the main body side (the front end of the front end area of the supply stage 3) (step S11). As described above, the electronic component is temporarily fixed in an optimally stable state on the transfer stage unit 12 by the stage fixing method according to the type of the electronic component. Therefore, there is no danger that the transfer stage section 12 is moved at a rapid speed.

Subsequently, the TF control section 42 outputs a notification of the completion of the movement of the transfer stage section 12 to the main body side control section 41, and is controlled by the main body side control section 41 having received the notification, and The work tower 6 (work head) of No. 4 moves onto the transfer stage section 12 (step S12), and sucks the electronic component with a suction nozzle attached to the tip of the work head (step S13).

Upon receiving the notice of the completion of the suction from the main body side control unit 41, the TF control unit 42 turns off the stage fixing (step S14). In this process, as shown in FIG. 9B, first, the stage fixing method designated in the above-mentioned step S3 is checked (step S14-1).

If the clamp system is used, the other control system 48 is controlled to release the closing drive of the clamp pawl 31 of the clamper 30 '(step S14-2), and
It returns to the main processing of FIG. Thereby, the temporary fixing of the electronic component on the transfer stage unit 12 is released.

When it is determined in step S14-1 that the stage fixing system is the vacuum system, the other control system 48 is controlled to control all the vacuum pads (the vacuum pads 37-1 and 37-2). 8) is released (step S14-3), and the process returns to the main process of FIG. Thereby, the temporary fixing of the electronic component on the transfer stage unit 12 is released.

If it is determined in step S14-1 that the stage fixing method is a combination of the clamp method and the vacuum method, the other control system 48 is controlled to drive the clamp pawl 31 to close. And the suction drive of all the vacuum pads is released (step S14-4), and FIG.
It returns to the main processing of. Thereby, the transfer stage unit 12
The temporary fixing of the electronic component on the upper side is released.

Returning to FIG. 8 again, the TF control unit 42 outputs a notification of the completion of the release of the temporary fixing of the electronic component on the transfer stage unit 12 to the main unit control unit 41, and receives the notification from the main unit control unit 41. The component mounting device 4 is controlled by the
The work head of the work tower 6 that has absorbed the electronic component rises (step S15). Thereafter, the work tower 6 moves onto the circuit board, and mounts the electronic component on the circuit board by the work head.

On the other hand, upon receiving the notification of the completion of the raising of the working head from the main body side controller 41, the transfer stage 12
After confirming that the clamper 30 ′ is in the free state, the TF control unit 42 controls the stage axis control system 47 to move the transfer stage unit 12 backward (the rear end of the front end area of the supply stage 3). (Step S16). This completes the preparation for transfer of the next electronic component, which is performed in the same manner as described in steps S1 to S15.

Then, steps S1 to S16 are repeated again, and electronic components desired by the component mounting device 4 are sequentially stored in the tray feeder 1.
Is transferred to the component mounting apparatus 4 from the server.

The clamp claw 3 of the clamper 30 '
In the shape 1, the surface of the gripping portion of the claw is formed uniformly.
The tray feeder 1 of the present invention is provided with a clamper having a special shape because the tray is limited to a width similar to the maximum opening width of the tray 1. This will be described below as a second embodiment.

FIG. 10 is a view showing the shape of a clamper according to the second embodiment. FIG. 10 (a) shows the shape of a standard clamper, and FIG. 10 (b) shows the shape of a modified clamper. It is.

As shown in FIG.
5 are clamp claws 56a and 5
The shape of the opposing surface 6b is not linear, but is equally divided into three to form a step. That is, the clamp claws 56a
And 56b are opposed portions 56a-1, 5a protruding to the center.
6b-1, opposing portions 56a-2 and 56b-2 cut slightly to the left to form a step, and opposing portions 56a- cut slightly deep to the right of the center to form a step. 3, 56b-3.

The opposing portion 56a projecting from the central portion
Reference numerals 1 and 56b-1 denote gripping portions for small components, and opposing portions 56a-2 and 56b-2 which are shallowly cut to the left in the center are gripping portions for medium-sized components, and are cut deeply to the right in the center. The facing portions 56a-3 and 56b-3 are holding portions for large components.

When the transfer head 23 releases the sucked electronic component and mounts the electronic component on the clamper 55, the small electronic component is placed at the center (lane 3).
Medium-sized electronic components are shifted to the left (lane 1), and
Large electronic components are placed on the right side (lane 2). Thereby, the clamp claws 56a and 56b can be mounted as shown by the double-headed arrow E in the figure, regardless of whether the electronic component to be mounted is small, medium, or large, regardless of its size. The electronic component can be received and gripped by opening and closing operations in a substantially constant range.

The electronic components to be gripped by the clamp claws 56a and 56b are the ones in which the contacts are gripped and transported without the lead pins formed on the bottom surface by bumps or the like. In the case of electronic parts (parts with lead pins) commonly called centipede type,
A modified clamper 55 'shown in FIG. 10B is mounted on the transfer stage 12 and used.

As shown in FIG.
5 'clamp claws 57a and 57b are provided with opposed portions 57a-1, 57b-
1, 57a-2 and 57b-2 form a grip. These facing portions 57a-1, 57b-1, 57
a-2 and 57b-2 perform opening and closing operations within a certain range as indicated by a double-headed arrow F in the figure, so as to clamp portions without lead pins on both side surfaces of the component with lead pins.
At this time, the lead pin is formed so as to be inserted between the opposing portions (grip portions) so as not to be affected by the clamp claws.

Incidentally, the tray feeder 1 is essentially an optional device of the component mounting apparatus 4 although it operates in conjunction with the component mounting processing operation of the component mounting apparatus 4 as described above. It operates asynchronously with the device 4. For this reason, the operator tends to think that the tray feeder 1 is also stopped when the operation of the component mounting apparatus 4 is temporarily stopped, and the door 8 of the tray feeder 1 is often opened.

In order to prevent such danger, the door 8 is usually provided with a sensor or a switch for detecting its open / closed state. Then, when the opening of the door 8 is detected, processing for preventing danger by software has been executed according to the state of the tray feeder 1 at that time.

For example, when the opening of the door 8 is detected and before the supply of the next electronic component to the component mounting apparatus 4 is executed, a warning is displayed without executing the supply process. Also,
If the electronic component is being supplied to the component mounting apparatus, a warning is displayed, and the supply operation is continued until the supply operation for the electronic component being supplied is completed, and then the electronic component is stopped. Alternatively, when the opening of the door 8 is detected, processing such as forcibly stopping all the machine operating units by software control has been performed.

However, if the operation is stopped after the predetermined supply operation is completed after the opening of the door 8 is detected, there is a danger in terms of operator safety. Further, when the mechanical movable part is stopped in response to the detection of the opening of the door 8, it takes time to stop the mechanical movable part during the high-speed movement smoothly, so that the door 8 is opened. Immediately after that, the mechanical movable part is still operating, and the danger remains as described above.
On the other hand, if the emergency stop is forcibly executed, there is a problem that the impact at the time of the stop is applied and the arrangement of components on the pallet is destroyed, and that the mechanical life of the entire apparatus is adversely affected.

In the tray feeder 1 according to the present embodiment, in preparation for the above case, the pallet corresponding to the type switching of the circuit board to be processed on the component mounting apparatus 4 side is replaced, and electronic components are extracted from the pallet pulled out. In operations such as pick position teaching when sucking and replacement of parts when supplying electronic components, various measures have been taken to ensure the safety of workers and the reliability of the machine itself.

That is, during the operation of the tray feeder 1 which may pose a danger to the operator in the maintenance work such as tray teaching and tray adjustment when the type of the circuit board of the component mounting apparatus 4 is changed, The door 8 is not allowed to be opened, and the tray 8 is controlled to be opened after the operation of the tray feeder 1 is completed and stopped.

FIG. 11 is a flowchart for explaining the processing operation of the main body side control unit 41 for performing such control.
In this process, the TF-side control unit 42 responds to the control processing operation of the main-body-side control unit 41 to operate the I / F (interface) 49-1 of the cover lock control system 49 shown in FIG.
The cover lock & unlock circuit 49-2 of the cover lock control system 49 is controlled via the
-3 prohibits the opening of the door 8 and cancels the prohibition.

At this time, an operation signal of the cover lock SW (switch) 49-4 for manually releasing the lock (lock) of the closed state of the door 8 is transmitted to the TF controller via the I / F 49-1. 42 is notified, and this notification is ignored when there is a danger, ensuring safety, and approved when there is no danger, according to the control processing operation of the main body side control unit 41 described above.

With this approval, the cover lock & unlock circuit 49-2 turns off (drives in the unlock direction) the cover lock mechanism 49-3. As a result, the cover lock SW 49-4 can be operated, and the door 8 is opened. When this opening is detected by the cover opening detecting mechanism 49-5, the detection signal is transmitted to the I / F 49-1. Through T
The F control unit 42 is notified. By this notification, the TF control unit 42 turns on (or blinks) a warning light disposed above, for example, the door 8 to notify that the door 8 is being opened.

As shown in FIG. 11, when the power supply of the main body (the component mounting apparatus 4) is first turned on, the main body side control section 41 starts the initial processing of the system, as shown in FIG. At the same time, the TF control unit 42
, The transfer of the initial command and the system data is started (step S101).

When the initial processing of the main body 4 and the tray feeder 1 is completed, the main body control section 41
A door lock (cover lock, hereinafter the same) command is output to the F control unit 42 (step S102). In response, the TF control unit 42 turns on the cover lock mechanism 49-3 to fix (lock) the door 8 in the closed state.

However, depending on the electronic component mounting mode or the like, the operation of the tray feeder 1 such as the lifter shaft control system 45 (operation that poses a danger to the operator) is requested from the main body side control unit 41, that is, the operation is not completed yet. When there is no danger, the door 8 can be freely opened and closed by turning on / off the cover lock SW49-4.

Subsequently, when the main unit 4 enters the electronic component mounting mode and moves to the execution of the mounting initial process (initial setting of the mounting process), the main unit control unit 41
, An initial command in the component supply mode is output (step S103). Then, when the initial processing of both the main body 4 and the tray feeder 1 is completed, the process proceeds to the automatic mounting mode of step S104 and subsequent steps.
The main control unit 40 executes component mounting according to the mounting program.

That is, first, regarding the electronic components supplied from the tray feeder 1, the pallet 1 of the designated stage is output before the electronic component supply command is output to the TF control unit 42.
8 to determine whether the electronic component exists (step S
104). In this process, the number of remaining parts on the pallet 18 of each stage of the elevating tray shelf 14 of the tray feeder 1 is always stored in the memory of the main body side control unit 41 and managed.

When there is a remaining number (N in S104), the operation of receiving the electronic component (supply operation from the tray feeder 1 side) is started. First, a door lock command is output from the main body side control unit 41 to the TF control unit 42,
Upon receiving the notification of the completion of the execution of the door lock process from the F control unit 42, a door lock release prohibition command is further output (step S107). Thereby, even if the cover lock SW49-4 of the tray feeder 1 is pushed by the operator to perform the unlocking operation, the closed state of the door 8 is fixed so as not to be released, and the above unlocking operation is ignored. .

Thereafter, the main unit 4 outputs a supply command with the required stage number and position data of the electronic component added as parameters (step S108). Thereby, TF
The supply of the electronic components described in FIGS. 8 and 9A and 9B by the control unit 42 is executed, the electronic components are sucked by the main body side 4, and the image recognition of the sucked electronic components is performed. The position is corrected based on the image recognition, the electronic component is mounted on the circuit board, and the mounting process of the electronic component ends (step S108).

Thereafter, referring to the input signal from the TF control section 42, it is determined whether or not the cover lock SW 49-4 is pushed by the operator (step S1).
09). If the pushing operation has been performed (S1
09) (Y), a door lock release permission signal is output, the door 8 can be opened (step S110), and the process proceeds to the next step S111.

On the other hand, if the cover lock SW 49-4 is not pushed (S109: N), the process immediately proceeds to the step S111. This step S111
Then, it is determined whether or not the mounting mode of the electronic component has been completed (all the component mounting processes on the same type of circuit board have been completed). If the component mounting process has not been completed, the process returns to step S104 and returns to step S1.
04 to S111 are repeated.

As a result, the electronic component mounting process (supply process in the tray feeder 1) is sequentially executed, during which the push-in operation of the cover lock SW 49-4 is constantly monitored, and unlocking is permitted only when there is no danger. Thus, the door 8 can be safely opened.

In step S104, when there is no remaining electronic component on the pallet 18 at the designated stage (Y in S104), a message indicating that the electronic component has run out is displayed on a display device such as a touch panel on the main body. , TF
A door lock release permission signal is output to the control unit 42 so that the door 8 can be opened (step S10).
5).

Then, it is confirmed that the operator has supplied electronic components to the pallet 18 at the designated stage and performed an operation of clearing the component exhaustion message (step S10).
6) Further, in step S111, it is confirmed that the component mounting process has not been completed yet, and the above-described step S10 is performed.
Steps 4 to S111 are repeated.

When the above operation is repeated and a series of mounting operations of the designated program is completed, the main body side controller 41
A door lock command is output to the F control unit 42 and the TF control unit 4
In response to the notification of the completion of the execution of the door lock process from Step 2, a door lock release prohibition command is further output to secure the safety (Step S <b> 112), and the TF control unit 42 executes the process related to the end of the component supply process. (Step S11
3).

Then, upon receiving the end of the processing relating to the end of the component supply processing from the TF control section 42, the TF control section 42
A door lock release permission signal is output to the
4), the electronic component automatic mounting process is finally completed.

In the above description, the door lock has been described in relation to only the mounting (supply) mode of the electronic components. In a potentially dangerous operating mode, the locking mechanism can be adapted to operate automatically.

[0089]

As described above in detail, according to the present invention, there are provided a supply table (transfer table) having a plurality of types of holding functions corresponding to types of components and a transport lane for moving the same. Parts are supplied by switching the combination of the supply table and the transfer lane according to the loading program, so that not only normal parts but also irregular parts such as BGA, CSP, large connectors, etc. can be stably held and fixed. Therefore, it is possible to provide a tray feeder which is versatile and has a high processing speed.

Further, since the opening / closing section is manually locked during the operation of the tray feeder by simply adding a simple configuration, the safety and reliability of the opening / closing section of the tray feeder which operates asynchronously with the component mounting apparatus are improved. Therefore, operations such as replacement of parts, replacement of a pallet, teaching of a pick position, and the like can be performed with security, and the working environment is improved.

[Brief description of the drawings]

FIG. 1 is an external view of a tray feeder according to a first embodiment, in which (a) is a plan view, (b) is a front view, and (c) is a side view.

FIGS. 2A and 2B are diagrams showing a connection state between a tray feeder and a component mounting apparatus, wherein FIG. 2A is a plan view, FIG. 2B is a front view, and FIG.

FIG. 3A is a side view of a tray feeder with a protective cover removed, and FIG. 3B is a view showing a state of housing electronic components housed therein.

FIG. 4 is a diagram illustrating a configuration of a supply stage of a tray feeder and an engagement relationship with a lifting tray shelf.

FIG. 5A is a perspective view illustrating a configuration of a clamper according to the first embodiment, and FIGS. 5B and 5C are perspective views illustrating an operation state thereof.

FIG. 6 is a diagram illustrating another example of the clamper according to the first embodiment.

FIG. 7 is a block diagram illustrating a system configuration of a tray feeder.

FIG. 8 is a flowchart illustrating an operation of a process of supplying an electronic component to a component mounting apparatus under the control of a main control unit of a tray feeder.

FIGS. 9A and 9B are sub-flowcharts of the process of FIG. 7;

FIG. 10A is a diagram showing a shape of a standard clamper according to the second embodiment, and FIG. 10B is a diagram showing a shape of a modified clamper.

FIG. 11 is a flowchart illustrating a processing operation of a control unit of the component mounting apparatus that performs control for ensuring safety when a door of the tray feeder is opened.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tray feeder 2 Main body (drive part) 3 Supply stage 4 Component mounting apparatus 5 Main body base 6 Work tower 7 Guide rail 8 Door 9 Window 10 Handle 11 Tool change part 12 Transfer stage part 13 Drive part and control box 14 Elevating tray Shelf 15 Lift 16 Tray 17 Hook 18 Pallet 19 Electronic component 20 Transfer stage rail 21 Y-axis rail 22 X-axis rail 23 Transfer head 24 Pickup head 25 Loader guide 26 Loader 27 Loader rail 28 Suction nozzle 29 Nozzle holding frame 30 Clamper ( First Embodiment) 30 'Clamper (Another Example of Second Embodiment) 31a, 31b Clamping Claw 32 Vacuum Pad 33 Component without Lead Pin 34 Component with Lead Pin 35a, 35b Clamping Claw 36 Base 37-1, 27 -2 ba Use pad 38 lane mark 40 component mounting device side main control unit 41 component mounting device side tray control system 42 tray feeder side main control unit 43 X-axis control system 44 Y-axis control system 45 lifter axis control system 46 loader axis control system 47 stage axis Control system 48 Other control system 49 Cover lock control system 51 VME bus I / F (interface) 55 Clamper (standard clamper, 1st embodiment) 55 'Irregular clamper (other example of 1st embodiment) 56 (56a, 56b) Clamp claws 56a-1, 56b-1 Large component grips 56a-2, 56b-2 Medium component grips 56a-3, 56b-3 Large component grips 57 (57a, 57b) Clamps 57a -1, 57b-1, 57a-2, 57b-2 Component holding part with lead pin

Claims (4)

[Claims] 1. A tray feeder device for supplying various electronic components to a component mounting device for mounting electronic components on a circuit board, comprising: a clamper having a plurality of types of fixing devices for temporarily fixing the electronic components. A transfer table freely mounted; selecting means for selecting a fixing device according to the shape of the electronic component to be transferred from the plurality of types of fixing devices of the clamper of the transfer table; Control means for controlling the transfer of the transfer table so as to temporarily fix the electronic component by the fixing device and supply the electronic component to the component mounting device. 2. A tray feeder device for supplying various electronic components to a component mounting device for mounting electronic components on a circuit board, comprising: a plurality of fixing devices for temporarily fixing the electronic components. A clamper, a transfer table for detachably mounting a clamper selected from the plurality of clampers according to the shape of the electronic component, and a transfer table for transferring the clamper of the transfer table from the plurality of types of fixing devices. Selecting means for selecting a fixing device according to the shape of the electronic component to be provided; and temporarily fixing the electronic component by the fixing device selected by the selecting means and supplying the electronic component to the component mounting device. Control means for controlling the transfer of the transfer table as described above. 3. The plurality of types of fixing devices are QFP, S
The tray feeder device according to claim 1, wherein the tray feeder device is a fixing device corresponding to each of an OP, a connector, a deformed part, and the like. 4. The tray feeder device according to claim 1, wherein said selection means operates automatically and can perform a manual selection instruction.