JPS63177592A - Parts feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electronic component in which chipped electronic components such as resistors, capacitors, or transistors (hereinafter referred to as chip components) are positioned and mounted on a printed circuit board. The present invention relates to a component supply device used in automatic mounting devices and the like.

[Prior Art] Conventionally, in a component supply device for an automatic mounting device for electronic components of this type, as disclosed in, for example, Japanese Utility Model Application Publication No. 57-48673 previously filed by the present applicant, a component supply device using a cover tape is used. A tape in which chip components are enclosed in a sandwich shape at approximately equal intervals in the longitudinal direction of the tape is wound and stored on a tape reel, and the tape is intermittently fed out from the tape reel to supply the chip components to the component extraction section. Some tape feeding mechanisms employ a sprocket system in which a sprocket pin is wound around and engaged with a feed hole drilled in the tape2. Now, the sprocket is rotating! ! At present, the tape 11- is rotated by the tape feeding operation using the + to feed out the tape in which the chip components are encapsulated.

[Problems to be Solved by the Invention] For this reason, in the conventional apparatus described above, the tape reel is rotated by the tape feeding operation driven by the rotation of the sprocket. In order to increase the size of the tape, the inertia of the tape reel becomes too large, making it impossible to follow the tape reel.Furthermore, it is necessary to delicately control the brakes of the tape reel along with the tape feeding operation, and the mechanism itself becomes complicated, making it difficult to keep it stable at all times. There was a problem in that the tape could not be fed.

The present invention was made under the above circumstances.

The purpose is to provide a component supply device that can increase the speed of the tape feeding operation and improve the ability to follow the increase in the size of the tape reel.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a method for winding and storing a tape in which chip-shaped parts are encapsulated at approximately equal intervals in a tape storage part in the form of a reel. In the component supply device, the tape is intermittently fed out to a component take-out means via a tape feed means formed by winding and meshing a feed hole formed in the tape with a rotationally driven sprocket, the tape feed means from the tape storage section. The tape is designed to have some slack in advance so that the tape can be pulled out and maintained.

[Function] That is, by having the above configuration, the present invention has the following effects:
The tape containing chip-shaped electronic components is pulled out to a certain extent before the tape feed operation to give the tape some slack, so the tape feed operation only works on the slack tape. Therefore, it is not affected by the inertia of the tape reel, and as a result, it is possible to increase the speed of tape feeding operation and improve the ability to follow larger tape reels, and there is no need to perform delicate brake control of the tape reel. , it becomes possible to always perform stable tape feeding.

[Example] Hereinafter, the present invention will be described in detail with reference to an illustrated example.

1 to 3 schematically show the overall configuration of an automatic assembly device for electronic components equipped with a component supply device according to the present invention. It is the base that was created. On this base (1), there is a turntable (2) which is divided into 18 parts and serves as a means for taking out parts, and a linearly movable parts supply stand (on which a plurality of tape sending units (30), which will be described later), are installed. 3), a first conveyor (4) that supplies and conveys a printed circuit board (not shown) on which a chip component (W) to be described later is assembled and mounted; X- to control positioning and movement in the X-axis direction and Y-axis direction
A Y table (5), a second conveyor (6) for discharging and conveying printed circuit boards after chip components have been assembled and mounted on this X-Y table (5), and a - A transport device (7) for reloading the printed circuit board on the Y table (5), a component positioning device (8) for positioning the chip component (W) on the turntable (2), and a servo motor (not shown) for rotation. The drive index unit (9) and the tape feeding unit (30) on the component supply table (3) serve as a tape storage unit for feeding a tape (100) to be described later in which chip components (W) are sealed at approximately equal intervals. It has a configuration in which a tape reel (10) and a reel mounting plate (11) serving as a reel holder that holds the tape reel (10) on the movable component supply table (3) are installed respectively. The turntable (2) is attached to an index unit (9), and is intermittently controlled to rotate by driving the index unit (9).

As shown in FIG. 4, the above-mentioned component supply table (3) is connected to a support table (12) installed on the base (1) via a linear guide (13) and a linear guide bearing (14). This component supply table (3
), support pins (15) and (16) are provided protrudingly on the top.
The tape feeding unit (30) is installed on the component supply table (3) in a positioned state by being fitted with these support pins (15) and (16).

Further, (17) in the figure is a support arm extending from the component supply table (3), and on this support arm (17),
The lower end surface portion (11a) of the reel mounting plate (11) on which the tape reel (10) described above is mounted and held is supported in an unfixed state, and this reel mounting plate (11)
The component supply table (3) is moved by engaging the locking piece (18) protruding toward the lower end of the support arm (17) with the notch (19) provided at the tip of the support arm (17). The reel mounting plate (11), that is, the tape reel (1o) can be prevented from moving laterally. On the other hand, the upper end (llb) of the reel mounting plate (11) is attached to the tape feeding unit (30) via a fixing pin (20), and swings up and down using the fixing pin (20) as a fulcrum. It is movably supported, and its vertical swing range is regulated via an elongated hole (21) and a guide pin (22). Note that (23) in the figure is a ball screw that moves the component supply table (3) by driving a servo motor (not shown).

That is, the reel mounting plate (11) that attaches and holds the tape reel (10) attaches and holds the tape at three locations: the support pins (15), (16) and the support arm (17) provided on the component supply table (3). It is swingably attached to the tape delivery unit (30) so that it can share and bear the weight of the reel (10), and the reason for this is:
Since the diameter of the tape reel (10) is specified as a maximum of 382 mm by the Electronics Industry Association of Japan (EIAJ) standard, if such a large tape reel is fully loaded with chip components, it will weigh more than 1 kg. Therefore, simply fixing the reel mounting plate (11) to the tape feeding unit (30) in a cantilevered state requires considerable mounting strength, which is cumbersome.

Further, the reel mounting plate (11) includes a thin plate member (11).
1), as shown in FIG. 5, both side walls of a thin plate member (111) on which the tape reel (1o) is held are curved inward to give it spring properties; As shown in FIG. 6, when the tape reel (10) is installed, push open both side walls and reel the tape reel (10).
10), as shown in FIG. 7, both sides of the tape reel (10) are elastically clamped by both side walls of the thin plate member (L11), and due to the elastic clamping action, The tape reel (1o) can be held securely, the tape reel (10) can be easily attached and detached, and the tape reel (10) can be moved by the force of pulling out the tape. It is designed to act as a brake to prevent excessive rotation, and is inserted into the center hole of the tape reel (10) on the inner surface of both side walls of the thin plate member (111) so that the center of the rotation axis is fixed. Protrusions (112) supporting the tape reel (10) are integrally protruded to face each other.

On the other hand, the tape feeding unit (30) installed on the component supply table (3) transfers the tape (100) wound and stored on the tape reel (1o) to the turntable (2), which is a component ejecting means. The tape is fed out to the suction device at a predetermined pitch, and such a tape feeding unit (30), as shown in FIG.
A first sprocket (31) rotationally driven by a drive system (not shown), a second sprocket (32) connected to and spaced apart from the first sprocket (31),
These first and second sprockets (31) (32
), and a timing belt is provided between the first and second timing pulleys (33) and (34), respectively, so that they can freely rotate synchronously. a belt (35);
The second sprocket (31) (32) has pins (31a) (32a) that are engaged with the feed hole (100a) of the tape (100) wound and stored on the tape reel (10) of the component supply table (3). The first sprocket (31) located on the downstream side is located above the second sprocket (32).

A chute (36) is installed between the first sprocket (31) and the second sprocket (32), and a spring (36) is installed above the chute (36).
A presser plate (38) is provided which is pressed downward at the chute (36) and the presser plate (38), and the tape (100) is fed between the chute (36) and the presser plate (38).
) by the first and second timing pulleys (33) (3
4), the tape (100) is moved from the second sprocket (32) side to the first sprocket (31).
) side and diagonally upward, and the first
The tape (10) immediately after passing through the sprocket (31) of
0) is discharged diagonally downward via the tape guide (39), and the delivered tape (1
The part removal position (A) is directly above the rotation center of the first sprocket (31), which is the apex of the tape (100), and the square hole (102) (10
By lowering the position of 2), the chip component (W) can be sucked and held and taken out by a vacuum chuck (8o) of a suction device, which is a take-out tool to be described later.

By the way, the tape (100) wound and stored on the tape reel (10) is arranged in rows at predetermined pitch intervals in the longitudinal direction of the base tape (101), as shown in detail in FIGS. 9 and 10. A chip component (
W), and by covering both the front and back sides of the base tape (101) with cover tapes (103) and (104), the chip components (W) are encapsulated at equal intervals in the longitudinal direction of the tape. When taking out the chip component (W) from within such a tape (100), the cover tape (103) on the front surface is removed by a tape feeding operation using a cover tape peeling device (60) to be described later. The chip component (
W) is exposed to the outside, and the first
As shown in FIGS. 1 and 12, the component removal position (A) by the vacuum chuck (8o) of the suction device is set at the apex directly above the rotation center of the first sprocket (31). , the tape (100) after peeling off the cover tape (103) at this component extraction position (A) is
The sprocket (31) is curved in an arc shape along the outer circumference of the sprocket (31), thereby widening the opening recess of the square hole (102).

The chip component (W) is placed in the vacuum chuck (80
) When the chip component (W) is sucked and held by the downward movement of the base tape (10
Partition wall (101a) formed between the square holes (102) of 1)
This makes it possible to easily and smoothly take out the chip component (W) without it getting caught, and it is possible to reliably prevent the occurrence of suction errors due to changes in the posture of the chip component (W) or falling during suction.

In addition, (100a) in the figure indicates the tape (100a).
0) Tape feed holes bored at predetermined pitch intervals in the longitudinal direction.

Furthermore, the first sprocket (31) has a thirteenth
As shown in the figure, a gear (41) is integrally provided with the first timing pulley (33).

This gear (41) is rotatably supported on a fixed shaft (43) fixed to a fixed frame (42), while this fixed shaft (43) has a swinging shaft that meshes with the gear (41). A swinging arm (45) equipped with a gear feed pawl (49) that can
) is swingably supported, and this swing arm (45).

As shown in FIG. 8, the first pusher (48) is pushed by an external drive against the biasing force of a spring (47) installed between the fixed frame (42) and swung. By rotating the gear (41) in a ratchet manner, the first sprocket (31) is rotated by one pitch and the tape (100) is rotated by one pitch.
It is designed to send out the pitch. That is, a spring (50) is stretched between the pin (49a) that protrudes from the gear feed pawl (49) and the pin (42a) that protrudes from the fixed frame (42).
50) urges the gear feed pawl (49) to move the gear (4).
In addition to pressing on 1).

It plays a role of returning the swing arm (45). In addition, (44) in the figure is a lock pawl rotatably supported on the fixed frame (42), which is elastically engaged with the gear (41) by the biasing force of a spring (47).
This prevents the first sprocket (31) from rotating in the opposite direction when the swing arm (45) returns.

However, at this time, in order to increase the speed of tape feeding, if the swinging arm (45) is rapidly oscillated by the external drive of the first buttonhole (48), for example, the tape reel (10) If the diameter of the tape (100) becomes large and the inertia is large, the feed hole (100a) of the tape (100) may tear.

Therefore, in the present invention, as shown in FIG. 14, a tape pressing means is provided at a position above the tape (100) intermediate between the tape reel (10) and the rear end (36b) of the chute (36). A second pusher (51,) is installed, and this second pusher (51) is driven externally to
As shown in the figure, by lowering the tape (100) while it is not being fed, the tape (100) is pushed down and the tape is fed out at least next time before the tape feeding operation starts. From the tape reel (10) to the tape (100
), and immediately before the tape feeding operation starts, the second pusher (51) is raised by an external drive,
The tape (100) is loosened by releasing the tape pusher, which increases the speed of the tape feeding operation and improves the ability to follow larger tape reels. This system allows stable tape feeding at all times without the need for brake control or the like.

As shown in FIG. 8, the cover tape peeling device (60) that peels off the cover tape (103) of the tape (100) sent out from the above-mentioned component supply table (3) is operated as shown in FIG.
A chute (3) placed close to the component removal position (A)
The cover tape (103) peeled off from the tip (36a) of 6) is guided in the opposite direction to the tape feeding direction between the fixed guide (61) for preventing upward curling, and the peeling reel (62), and this stripping reel (62) is rotated by a drive motor (63) installed outside, and the belt (64) is wound on the stripping reel (62).
It is pressed against the friction drum (65) which rotates by being biased by a compression spring (66) through the tape feed mechanism, so that the stripping rotational force is obtained by an external driving force independent of the driving force of the tape feeding mechanism. Cover tape (103
) can be arbitrarily adjusted to improve followability as the speed increases, and to prevent the cover tape (L O3) from slipping and idling when it is under tension. It has become. Furthermore, the friction drum (65) is configured to
It escapes upward to release the pressure contact with the stripping reel (62).

Furthermore, on the way to the peeling reel (62) of the cover tape (103), a pair of swing levers (71) and (72) constituting the auxiliary peeling mechanism (70) are installed. The swinging levers (71) and (72) are provided with pins (73) and (74) that hold the cover tape (103) between the front and back surfaces, while the springs (75) (76) and stoppers (77) and (78), the swinging lever (71) is allowed to rotate in one direction and is located on the upstream side in the peeling direction of the cover tape (103), and is driven externally. The third pusher (79) is rotated clockwise against the biasing force of the spring (75) by the downward movement of the third pusher (79), thereby removing the cover tape applied to the surface of the tape (100). (103) is forcibly peeled off.

That is, the cover tape peeling device (60) and the auxiliary peeling mechanism (70) remove the tape (100) shown in FIG.
As shown in FIG. 17, when the tape (100) is fed one pitch from the state before the feeding of the cover tape (100)
3) is also sent to the component removal position (A) without being peeled off. In this state, as shown in FIG. 18, the vacuum chuck (80) of the suction device is lowered, and its tip (80a)
When pressed against the cover tape (103) on the tape (100) and stopped after leaving a slight gap, the first
As shown in FIG. 9, the third pusher (79) of the auxiliary peeling mechanism (70) is lowered by an external drive to rotate one swing lever (71) clockwise, and the pin (73) is the pin (74) of the other swing lever (72)
The cover tape (103) is pulled by colliding with the cover tape (103) and simultaneously rotating the other swinging lever (72) clockwise.
This allows the cover tape (103) to be replaced by the tape (10
0) is peeled off from the base tape (101) to open the square hole (102) of the base tape (101) and expose the chip component (W) housed inside the tape. .

At this time, since the tip (80a) of the vacuum chuck (8o) is located close to above the square hole (102) of the opened base tape (101), even if the cover tape (103) Even if the chip component (W) is stuck to the back side due to static electricity, etc., the chip component (W) can be removed by the vacuum chuck (80) by peeling off the cover tape (103).
) is squeezed by the tip (80a) of the square hole (102
) remains within.

In this way, the cover tape (103) is replaced by the tape (100
), as shown in FIG. 20, the vacuum chuck (80) descends again and its tip (80a) picks up the chip component (W) in the square hole (102) of the tape (100).
) is sucked and held, and as shown in FIG. 21, the chip component (W) is taken out by lifting the vacuum chuck (80) in the vertical direction, and is transferred to the X-Y table ( 5) It is placed on a printed circuit board (not shown) positioned above and assembled.

By the way, the tip part (36) of the above-mentioned shoe)-(36)
a) The cover tape (100) is separated from the cover tape (100) by the cover tape peeling device (6o) and the auxiliary peeling mechanism (70).
03) is peeled off from the first sprocket (3).
1) The component removal position is directly above the center of rotation [(A), and the cover tape (103) of the tape (100) is
) is sent to the component take-out position (A) without peeling, and the cover tape (103) is peeled off at the position where the tip (80a) of the vacuum chuck (80) of the suction device is closest. This prevents the chip component (W) exposed by peeling off the cover tape (103) from popping out at the tip (80a) of the vacuum chuck (80), and prevents the chip component (W) from sticking out from the cover tape (103). ) to prevent the chip component (W) from sticking and being taken away, or from moving around.

In addition, as shown in FIG. 8, (90) in the figure is a locking mechanism that locks the tape feeding unit (3o) onto the component supply table (3), and is an L-shaped lock mechanism attached to the component supply table (3). A tapered tip (93a) of a lock pin (93) with a handle (92) on one end of the lock fitting (91).
is inserted in a wedge shape against the biasing force of a spring (94), and by utilizing this wedge effect, it can be removably locked.

In addition, in the above embodiment, the cover tape (103
), the auxiliary peeling mechanism (70) is installed in the peeling process of the cover tape, but the invention is not limited to this.As shown in FIG. 22 as another embodiment, the auxiliary peeling mechanism (70) is removed and the cover tape is removed. The functions and effects of the present invention can also be fully exhibited by appropriately controlling the winding rotation drive of the stripping reel (62) of the stripping device (60). At this time, if the tension is still applied to the cover tape (103), the cover tape (103) will already be applied when the next time the tape is fed.
03) may come off, so as a means to prevent this, as shown in FIG. 22, the cover tape (103) is moved down by a fourth pusher (67 ) at the upstream position of the pin (68) to keep it pressed and loosened.

Further, as another means for loosening the cover tape (103), it is also possible to reversely rotate the peeling reel (62) described above.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, a tape in which chip-shaped parts are encapsulated at approximately equal intervals is wound and stored in a tape storage part in the form of a reel, and this tape is In a component supply device in which a tape in which a chip-shaped electronic component is encapsulated is intermittently fed out to a component removal device via a tape feeding device formed by winding and meshing a formed feed hole with a rotationally driven sprocket, Since the tape is pulled out to a certain extent before the tape feed operation to give the tape some slack, the tape feed operation only acts on the slack tape, so it is not affected by the inertia of the tape reel. As a result, it is possible to increase the speed of the tape feeding operation and improve the ability to follow the increase in the size of the tape reel, and it is possible to always perform stable tape feeding without the need for delicate brake control of the tape reel. This has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing an embodiment of the overall configuration of an automatic mounting device for electronic components equipped with a component supply device according to the present invention, FIG. 2 is a schematic side view, and FIG. 3 is a schematic diagram as well. FIG. 4 is a schematic side view of the component supply device according to the present invention, FIGS. 5 to 7 are plan views of essential parts of the reel holder showing the state in which the tape reel is held, and FIG. An explanatory diagram schematically showing the internal structure of the tape sending unit,
FIG. 9 is a partially enlarged sectional view of the tape in which chip components are encapsulated, FIG. 10 is a partially enlarged plan view of the tape, and FIG.
12 and 12 are cross-sectional views schematically showing the state of chip components being taken out at the component take-out position, FIG. 13 is a schematic cross-sectional view of main parts showing the tape feeding state of the tape feeding portion, and FIGS. 14 and 15. 22 is a schematic explanatory diagram showing the operating state of the tape pressing mechanism that makes the tape slack, FIGS. 16 to 21 are schematic explanatory diagrams showing the operating state of the cover tape peeling mechanism, and FIG. The figure is a schematic explanatory diagram showing another embodiment of the cover tape peeling mechanism portion according to the present invention. (2)...Turntable. (3)...Parts supply stand, (10)...Tape reel (tape storage section), (30
)...Tape sending unit, (31) (32)...Sprocket, (51
)...Tape pressing means (pusher), (80)
...Parts removal means (vacuum chuck). (100) ... tape, (100a) ... feed hole. (A) ...Component extraction position, (W) ...Chip parts. tj Figure 4

Claims (1)

[Claims] A tape in which chip-shaped parts are enclosed at approximately equal intervals is wound and stored in a tape storage part in the form of a reel, and a sprocket formed in the tape is wound around a sprocket that is driven to rotate. In the component supply device, the tape is intermittently fed out by a component take-out means, and the tape before reaching the tape storage section and the tape delivery means is provided with a slack margin in advance so that the tape can be maintained in the drawer. A parts supply device for