JP3115959B2 - Feeding feeder safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feeder for picking up chip components such as ICs from a tray in a tray storage section and feeding the chip parts to a mounting apparatus. Related to safety devices.

[0002]

2. Description of the Related Art Conventionally, a chip component (electronic component) supplied by a component supply device is suctioned by a mounting head having a suction nozzle, and this head is moved onto a printed circuit board to mount the chip component. The mounting device described above is generally known. And the mounting device usually has
Although a relatively compact component supply device such as a tape feeder is provided, it is sometimes difficult to store a relatively large or specially shaped chip component in a tape feeder or the like.

[0003] Therefore, as a component supply device used in such a case, for example, as shown in JP-A-64-30298, a tray in which a plurality of upper and lower trays in which chip components are arranged are stored so as to be freely inserted and removed. A storage section, a component conveying means provided from a predetermined position on the side of the tray storage section to a component suction position of the mounting apparatus, a tray drawer for pulling out the tray from the tray storage section, and a drawer from the tray storage section. There is known a feeder which includes a component transfer head for sucking chip components on a tray and transferring the chip components to the component transport means.

[0004]

In this feeder, it is necessary to exchange trays for which components have been supplied or the like with new trays or to replenish components. In this case, it is preferable that the feeding operation is performed for other trays even when a tray replacement operation or the like is being performed for some of the trays, from the viewpoint of improving work efficiency.
However, there remains a problem that during the work such as tray replacement, the tray to be worked on may be erroneously pulled out by the tray drawer.

In order to ensure safety, it is conceivable to stop the feeding operation during work such as tray replacement, but this will reduce work efficiency.

In view of such circumstances, the present invention is capable of simultaneously performing operations such as parts replacement and the feeding operation, thereby improving the working efficiency and ensuring safety. The purpose of the present invention is to provide a safety device.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a tray storage section in which a plurality of upper and lower trays on which chip components are arranged are drawably stored, and a tray storage section is provided in front of the tray storage section. A tray drawing device having an engaging portion for the front end of the tray to draw the tray in the tray storage portion forward from a predetermined storage position, and transferring the chip components on the tray drawn by the tray drawing device to the component transfer portion. In a feed feeder provided with a component transfer device, at least two stages of racks are provided inside a tray storage unit.
Each of the racks is provided so as to be movable to the rear side thereof, the trays are supported by the racks, and at least two doors corresponding to the respective racks are attached to the rear open portions of the tray storage units. An interlocking mechanism is provided between the door and each rack to move the rack backward as the door is opened.

[0008]

According to the above construction, when a tray replacement operation or the like is performed on a tray arranged in a part of racks, a door corresponding to the rack is opened, and the door is opened in conjunction therewith. The rack moves backward.
In this state, it is possible to perform the component feeding operation using another rack, and the tray on which the work such as replacement is performed is moved rearward, so that the tray is reliably separated from the tray drawer. .

[0009]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing the overall structure of a feeder according to an embodiment of the present invention, and FIG. 2 is an elevation view schematically showing a main part of the feeder (a schematic sectional view of a tray storage section). . First, the structure of the entire feeder will be described with reference to these drawings. The feeding feeder includes a tray storage unit 1, in which a plurality of upper and lower trays 2 are stored, and chip components (electronic components) are arranged in each tray 2. Each of the trays 2 can be pulled out forward, and a gripped portion 3 gripped by a clamp described later protrudes from the front surface thereof. This tray storage unit 1
A component transporting unit 4 is provided at an appropriate distance from the tray storage unit 1 in front of the tray storage unit 1.
A tray pull-out device 5 and a component transfer device 6 are provided between the component transfer unit 4 and the component transfer unit 4.

The component transport section 4 transports chip components to a mounting machine (not shown). For example, a transport member 7 having a component support portion, a feed belt 8 for moving the transport member 7, The transport member 7 is attached to the feed belt 8, and the feed belt 8 extends to the mounting machine. In the illustrated embodiment, two sets of the conveying member 7, the feed belt 8, and the servomotor 9 are provided to improve the work efficiency.

The tray pull-out device 5 includes a clamp 11 as an engaging portion for engaging the front end of the tray 2 and a guide 12 for supporting the clamp 11 movably in the front-rear direction.
A mechanism for moving the clamp 11, and a support frame 1 for supporting both sides of the tray 2 when the tray 2 is pulled out.
3 is provided. The clamp 11 has a pair of hook-shaped grips 11a and 11b that can be moved toward and away from each other so that the gripped portion 3 can be gripped from both sides.
a, 11b are operated. Clamp 1
The mechanism for moving 1 has a feed belt 14 arranged along the guide 12 and driven by a motor 15, and the clamp 11 is coupled to the feed belt 14. The tray pull-out device 5 pulls out the tray 2 by the operation shown in FIG. 3, and this operation will be described later.

Further, the tray pull-out device 5 is attached to a support 16 provided on a main body frame of the feeder so as to be able to move up and down, and a ball screw shaft 17 extending in parallel with the support 16 and a belt screw shaft 17. And a nut (not shown) screwed to the ball screw shaft 17 is provided in the tray drawer 5 so that the servo motor 19 is rotated by the servo motor 19. As the ball screw shaft 17 rotates by being driven, the tray drawer 5 moves up and down.

The component transfer device 6 includes a head unit 21. The head unit 21 is located at a certain height above the tray pull-out device 5 in the X direction (front-back direction) and the Y direction (left-right direction). ) Can be moved. That is, the head unit supporting member 22 extending in the Y direction is movably supported in the X direction by the guide rail 23 and is coupled to the X direction feed belt 24, and the head unit 21 is attached to the head unit supporting member 22. It is movably supported in the Y-direction and is coupled to a Y-direction feed belt 25. The feed belts 24 and 25 are driven by servomotors 26 and 27, respectively.

The head unit 21 is provided with a component suction head 28 connected to a negative pressure supply source (not shown) via a switching valve. The head 28 can be moved up and down by a fixed stroke by an air cylinder.

Next, the concrete structure of the tray storage part and the safety device provided therein will be described with reference to FIGS.
This will be described with reference to FIG.

As shown in FIGS. 2 and 4, two trays 31, upper and lower,
The tray 2 is supported on the upper rack 31 and the lower rack 32 at a plurality of levels.
Each of the racks 31 and 32 can be moved rearward by being supported by the tray housing body via a slide guide 33 (see FIGS. 5 and 6).

In addition, an upper door 36 corresponding to the rack 31 and a lower door 37 corresponding to the lower rack 32 are provided at a rear open portion of the tray storage unit 1. One side of each of the doors 36 and 37 is pivotally attached to the tray housing main body, and can be opened and closed independently of each other.

Between the upper door 36 and the upper rack 31, and between the lower door 37 and the lower rack 32,
Each is provided with an interlocking mechanism 40 for moving the rack backward with the opening of the door. This interlocking mechanism 40
7, for example, as shown in FIG. 7, the first and second links 41,
42, the two links 41, 42 are connected to each other via pins, the end of the first link 41 is pivotally connected to the rack 31 (32), and the end of the second link 42 is the door 36 ( 37).

A lock pin 43 is provided on the side of the tray storage unit 1 on the side of the door opening side, which locks the door when the door is closed and locks the rack when the door is opened (FIGS. 5 and 5). 6, see FIGS. 8 and 9). The lock pin 43 is vertically protruded and retracted by a solenoid 44 supported on a support wall.

With respect to the lock pin 43, the door 36 (3
As shown in FIG. 8, an engagement piece 45 having a hole for engaging the lock pin 43 when the lock pin 43 projects upward in the door closed state is provided on the side of 7). Also, as shown in FIG.
In a state where the lock pin 43 is immersed (solid line), the upper part of the lock pin 43 protrudes in accordance with the movement of the rack.
6 passes, but when the lock pin 43 is set in the protruding state after the rack has moved backward (two-dot chain line),
The rack is locked by preventing the forward movement of 6 by the lock pin.

An operation panel 47 including select buttons and the like is provided at an appropriate position such as an upper portion on the rear side of the tray storage section 1 (see FIG. 4). Further, the feeder is provided with a control unit (not shown) for controlling its operation to perform automatic operation.

The operation of the feeder and the safety device as described above will now be described.

The operation of the feeder is as follows. When a specific chip component among various chip components arranged in the tray 2 in the tray storage unit 1 is supplied to the mounting apparatus, the chip component is first placed. When the tray 2 is selected, the servo motor 19 is driven to adjust the height position of the tray drawer 5 to correspond to the selected tray 2. Then, the clamp 11 is operated and the tray 2 is pulled out, that is, FIG.
As shown in FIG. 3B, when the clamp 11 is moved toward the tray 2 and the clamp 11 reaches the front surface of the tray 2, the pair of grips 11a and 11b are operated in a direction approaching each other as shown in FIG. Gripping portion 3 on the front surface of tray 2
Is gripped, the clamp 11 is operated in the pull-out direction as shown in FIG.

After the tray has been pulled out, the tray pulling-out device 5 is raised to a substantially raised end position.
Is activated, and the tray 2 is moved by the head unit 21.
The upper chip component is sucked and transferred onto the transport member 7 of the component transport section 4. Then, the component is transported to the mounting machine by the component transport unit 4.

Such a series of feeding operations is automatically performed.

When replacing the tray 2 such as when components have been supplied, the rack 3 where the tray 2 to be replaced is located
The door 36 or 37 corresponding to 1 or 32 is opened,
The work of replacing the tray 2 is performed from the rear side of the tray storage unit 1.

In this case, even when the tray 2 belonging to one of the two racks 31 and 32 is being replaced, the feeding operation by the automatic operation is performed for the tray 2 of the other rack. , Work efficiency is enhanced.

When the automatic operation and the tray exchange are performed at the same time, the safety is ensured by the safety device as in the present embodiment.

That is, when the tray 2 in one of the racks 31 and 32, for example, the tray 2 in the upper rack 31 is replaced, the upper door 36 is replaced for the replacement operation.
Is opened, the interlocking mechanism 40 moves the rack 31 rearward with the opening of the door 36. In this state, even if the tray drawer 5 is operated by mistake on the rack 31 whose tray is being replaced, the tray 2 supported by the rack 31 is moved rearward as shown in FIG. The gripped portion 3 does not escape backward and is gripped by the clamp 11. Therefore, the tray 2 being replaced is erroneously inserted into the drawer 5.
The situation of being pulled out at the same time is reliably prevented.

When the tray replacement operation is being performed, the lock pin 43 is locked (projected).
In this case, the rack moved rearward with the opening of the door is locked in this state, so that the door is not inadvertently closed during the tray replacement operation.

FIG. 10 is a flow chart showing an example of the tray exchange operation and the operation of the feeder during this operation. This flow will be described. During the normal automatic operation of the feeder (step S1), the upper and lower doors 3
In a state where the racks 6 and 37 are closed and locked, the racks 31 and 32 are used to automatically perform a series of operations of pulling out the designated tray 2, transferring chip components, and transporting. .

When shifting from this state to tray replacement work, the rack for which tray replacement is to be performed is selected by operating the select switch on the operation panel 47 (step S).
2). At this stage, the operation of the machine (feeding feeder) is temporarily stopped until the preparation for tray replacement is completed (step S3). Further, the lock on the door to be opened is released (step S4). Then, the door is opened by the operator, and the rack slides backward accordingly (step S5). Subsequently, an automatic operation restart operation by the select switch is performed (step S6),
In response, the rack is locked by the lock pin 43 (step S7). In this state, the automatic operation is restarted (step S8), and the tray replacement work (step S9) is performed in parallel.

When the tray replacement operation is completed (step S
10) The rack storage preparation is performed by operating the select switch (step S11), and the lock on the rack is released accordingly (step S12),
The operation of the machine is temporarily stopped (Step S13).
Then, the door is closed by the operator and the rack is stored (step S14), and then the automatic operation is restarted by the select switch (step S15), and the door is locked in the closed state according to this operation (step S15). S
16).

In this way, improvement of work efficiency and assurance of safety are achieved.

In the above embodiment, the racks 31, 32
Although the doors 36 and 37 are provided in two upper and lower stages, three or more stages may be provided. Further, the specific structures of the component transport unit 4, the tray extracting device 5, the component transfer device 6, and the like may be changed in design without departing from the gist of the present invention.

[0036]

As described above, the present invention comprises a tray storage section in which a plurality of upper and lower trays on which chip components are arranged can be drawn out, and a feed feeder provided with a tray drawing device and a component transfer device. , A tray rack is provided with at least two rack racks for supporting the trays and a rear door of the tray storage unit, and the rack is moved rearward between each door and each rack with the opening of the door. Since the interlocking mechanism for moving is provided, it is possible to use another rack to perform the part feeding operation while performing work such as replacing trays in some racks. A situation in which the tray on which the operation of (1) is performed is erroneously pulled out by the tray drawer is reliably prevented. Therefore, improvement of work efficiency and
This can ensure both safety and security.

[Brief description of the drawings]

FIG. 1 is a plan view of a feeder provided with a safety device according to an embodiment of the present invention.

FIG. 2 is an elevational view showing a tray storage section and a tray pull-out device in the feeder.

FIGS. 3A, 3B, and 3C are operation explanatory diagrams sequentially illustrating a tray pull-out operation.

FIG. 4 is an elevational view of the tray storage section as viewed from the rear side.

FIG. 5 is a partially cutaway plan view of the tray storage unit in a door closed state.

FIG. 6 is a partially cutaway plan view of the tray storage unit when the door is open.

FIG. 7 is a partially cutaway schematic perspective view showing an interlocking mechanism between a door and a rack of a tray storage unit.

FIG. 8 is a partially cutaway perspective view showing a mechanism for locking a door with a lock pin.

FIG. 9 is a partially cutaway perspective view showing a mechanism for locking a rack with a lock pin.

FIG. 10 is a flowchart showing the flow of tray replacement work and the operation of the feeder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tray storage part 2 Tray 4 Parts conveyance part 5 Tray drawer 6 Parts transfer apparatus 31, 32 Rack 36, 37 Door 40 Interlocking mechanism

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-292322 (JP, A) JP-A-3-61205 (JP, A) JP-A-1-183891 (JP, A) JP-A-63-1988 299199 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) H05K 13/02

Claims (1)

(57) [Claims] A tray storage section in which a plurality of upper and lower trays on which chip components are arranged are drawably stored, and an engagement section for a front end of the tray is provided in front of the tray storage section. A tray feeder equipped with a tray drawer that pulls out the tray from a predetermined storage position forward and a component transfer device that transfers the chip components on the tray drawn by the tray drawer to a component transfer unit. At least two levels of racks inside the part,
Each of the racks is provided so as to be movable to the rear side thereof, the trays are supported by the racks, and at least two doors corresponding to the respective racks are attached to the rear open portions of the tray storage units. A safety device for a feeder, wherein an interlocking mechanism is provided between a door and each rack to move the rack backward when the door is opened.