JPS63177596A - 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 of this type of automatic mounting device for electronic components, a component supply device using a cover tape is used, as disclosed in, for example, Japanese Utility Model Application Publication No. 148875/1987, which was previously filed by the present applicant. 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 take out the chip components at predetermined locations. Some tapes have a structure in which a cover tape peeling mechanism is linked to a tape feeding mechanism that feeds the tape to a position.

However, in such conventional component supply devices, the cover tape is currently peeled off at a position away from the one component extraction position prior to the extraction of chip components.

[Problems to be Solved by the Invention] For this reason, in the conventional device described above, the chip components stored in the tape may scatter or dance during the transition from the cover tape peeling position to the component removal position. This not only tends to cause failures in component ejection by suction devices, etc., but also because the cover tape peeling mechanism is linked to the tape feeding mechanism, the behavior of the chip components after the cover tape is peeled off. In response to changes, there are limits to how fast tape feeding can be made.

In addition, in order to eliminate such problems, conventionally,
Providing a cover for the chip components or installing a shutter to open the shutter immediately before the component extraction position has been proposed, but the mechanism itself becomes complicated and the followability due to increased speeds has deteriorated. There was a problem that it was inferior.

The present invention has been made under the above circumstances, and its purpose is to suppress changes in the behavior of chip components after the cover tape is peeled off, and to improve followability for faster tape feeding operations. The object of the present invention is to provide a parts supply device that enables the following.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a tape in which chip-shaped parts are encapsulated at approximately equal intervals via a cover tape, which is intermittently moved to a predetermined part extraction position. and tape feeding means for feeding and feeding the tape.

A cover tape peeling means for peeling off the cover tape of the tape sent by the tape sending means, and a chip-shaped component housed in the tape that is peeled off and exposed by the cover tape peeling means at a predetermined component extraction position. and a component removal means for taking out the parts via a removal tool that can be raised and lowered,
The cover tape peeling position by the cover tape peeling means is set close to the component take-out position, and the take-out tool of the component take-out means stabilizes the posture of the chip-shaped component stored in the tape when the cover tape is peeled off. The structure is as follows.

[Function] That is, the present invention has the above configuration,
In addition to bringing the cover tape peeling position by the cover tape peeling means close to the component take-out position, the descending movement of the take-out tool of the parts take-out means prevents chip-shaped parts stored in the tape when peeling the cover tape, and Since the peeling rotational force of the stripping reel is obtained by an external driving force that is independent of the driving force of the tape feeding mechanism, the peeling speed of the cover tape can be adjusted arbitrarily, which improves followability as the speed increases. I can do it.

In addition, even if a chip component is stuck to the cover tape due to static electricity, etc. when it is peeled off, the chip component may fly out, the chip component may stick to the cover tape and be removed, or the chip component may stick to the cover tape and be removed by a removal tool such as a vacuum chuck. This makes it possible to reliably prevent this dance.

[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 mounting device for electronic components equipped with a component supply device according to the present invention. This 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 a printed circuit board that is supplied and conveyed from this first conveyor (4). The X-
The Y table (5) and the second conveyor (6) for discharging and conveying the mounted printed circuit board are used to assemble the chip components on the X-Y table (5). Transport to change the printed circuit board on the X-Y table (5)! A component positioning device (7) and a component positioning device v:L that positions the chip component (W) on the turntable (2).
(8) and an index unit (9) rotationally driven by a servo motor (not shown).

Tape feeding unit (30) on the component supply table (3)
a tape reel (10) serving as a tape storage unit into which a tape (100) to be described later, in which chip components (W) are enclosed at approximately equal intervals, is fed, and the tape reel (10) is connected to the movable component supply table (3). The reel mounting plate (11) serving as a reel holder held on the turntable (2) has a configuration in which a plate (11) is installed respectively, and the turntable (2)
It is attached to an index unit (9), and its rotation is intermittently controlled 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 reel mounting on which the tape reel (10) described above is mounted and held is such that the lower end surface (11a) of the plate (11) is supported in an unfixed state, and this reel mounting is mounted on the 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 is attached to the plate (11), that is, to prevent the tape reel (1o) from moving laterally. On the other hand, in the reel mounting, the upper end (1l b) of the plate (11) is attached to the tape feeding unit (30) via a fixing pin (20), and the upper end (1l b) of the plate (11) is attached to the tape feeding unit (30) via a fixing pin (20), and the reel is attached in the vertical direction using the fixing pin (20) as a fulcrum. is swingably supported by the elongated hole (21).
The vertical swing range thereof is regulated via the 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) for mounting and holding the tape reel (10) has 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 feeding unit (30) so that it can share and bear the weight of the tape reel (1o), and the reason for this is as follows.
Since the diameter of the tape reel (10) is stipulated by the Electronic Industries Association of Japan (EIAJ) standards to be a maximum of 382 mm, if such a large tape reel is fully loaded with chip components, it will weigh more than 1 kg. For this reason, it is difficult to attach the reel to the tape delivery unit (30) by simply fixing the plate (11) in a cantilevered state, as this requires considerable strength.

In addition, the reel mounting plate (11) is 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 (10) is held are curved inward to give it springiness; 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 (111), 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 rotated by the force of pulling out the tape. The inner surfaces of both side walls of the thin plate member (111) are
A projection (10) that is inserted into the center hole of the tape reel (10) and supports the tape reel (10) so as to be centered on the rotation axis.
112) are integrally protruded so as to face each other.

On the other hand, a tape feeding unit (30) installed on the component supply table (3) transfers the tape (100) wound and stored on the tape reel (10) 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),
The first and second timing pulleys (
33) and (34), and a timing belt (35) which is passed between the first and second timing pulleys (33) and (34) so that they can rotate freely in synchronization. The sprockets (31) and (32) have pins (3
1a) (32a), and 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).
5) by the first and second timing pulleys (33) (
34), the tape (100) is moved to the second
from the sprocket (32) side to the first sprocket (3
1) The tape (1) is fed out diagonally upward linearly, and the tape (1
00) is discharged diagonally downward via the tape guide (39), and the delivered tape (
100), the first sprocket (31) becomes the apex of
The part removal position (A) is directly above the rotation center of the tape (100), and the square hole (102) (1
02) is lowered so that the chip component (W) can be sucked and held and taken out by a vacuum chuck (80) 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 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) (104), it has a structure in which chip components (W) are encapsulated at equal intervals in the tape longitudinal direction, When taking out the chip component (W) from within such a tape (100), the cover tape (103) on the surface is removed by a cover tape peeling device (60) to be described later.
is peeled off with the tape feeding operation, and the square hole (102)
The chip component (W) is opened in a concave shape to expose the chip component (W) to the outside, and as shown in FIGS. 11 and 12, the component removal position (A) is ) is the first sprocket (31)
Since the tape (100) after peeling off the cover tape (103) at this component removal position (A) is set at the apex directly above the rotation center of the first sprocket (31
) is curved into an arc along the outer circumference of the
Since the opening recess of the square hole (102) is expanded, when the chip component (W) is sucked and held by the downward movement of the vacuum chuck (8o) of the suction device and lifted vertically to be taken out, the chip component ( W) can be easily and smoothly taken out without being caught on the partition walls (101a) formed between the square holes (lO2) of the base tape (lO1), and the chip parts (W) can be taken out easily and smoothly during suction. ), it is possible to reliably prevent the occurrence of suction errors due to changes in posture or falling.

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

Furthermore, in the first sprocket (31).

As shown in FIG. 13, the first timing pulley (33
) and a gear (41) are provided in one body, and this gear (
41) is a fixed shaft (41) fixed to a fixed frame (42).
43), while this fixed shaft (
A swing arm (45) provided with a swingable gear feed pawl (49) that meshes with the gear (41) is swingably supported on the swing arm (43).
As shown in FIG. 8, against the biasing force of the spring (47) installed between the fixed frame (42),
The gear (41) is rotated in a ratchet manner by being oscillated by the pushing operation of the first pusher (48) by an external drive, thereby rotating the first sprocket (31) by one pitch. Tape (100)
is designed to send out one pitch. That is, a spring (50) is stretched between the pin (49a) protruding from the gear feed pawl (49) and the pin (42a) protruding from the fixed frame (42). ) urges the gear feed pawl (49) to press it against the gear (41), and the swing arm (45)
). Also, in one figure (44
) 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), and is connected to the swing arm (45).
) is designed to prevent reverse rotation of the first sprocket (31) when the sprocket (31) returns.

However, at this time, if the swing arm (45) is suddenly swinged by the external drive of the first pusher (48), for example, the tape reel (10) may be If the diameter is 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). By installing a second pusher (51) that becomes , the tape (100) is pressed down and before the tape feeding operation starts, the tape (100) is moved from the tape reel (10) with at least a margin equal to the amount of tape to be fed next time.
, and immediately before the tape feeding operation starts, the second
The tape (100) is loosened by raising the pusher (51) by an external drive and releasing the tape pusher. This system improves the followability of the tape reel and allows stable tape feeding at all times without the need for delicate brake control of the tape reel.

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.
The chute (3) placed close to the part removal position [(A) side
The cover tape (103) peeled off from the tip (368) of 6) is guided in the opposite direction to the tape feeding direction between the fixed guide (61) for preventing upward curling, and (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).
is pressed against the rotating friction drum (65) by a compression spring (66), and the stripping rotational force is obtained by an external driving force independent of the driving force of the tape feeding mechanism. This allows the cover tape (103
), the peeling speed of the cover tape (103) can be arbitrarily adjusted to improve followability as the speed increases, and it also prevents the cover tape (103) from slipping and idling when it is under tension. ing. Further, the friction drum (65) is adapted to escape upward in order to release the pressure contact state with the stripping reel (62) when the component supply table (3) is moved.

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 swing levers (71) (72) have
Pins (73) and (74) are provided to hold the cover tape (103) between the front and back surfaces, while springs (75) and stoppers (76) are provided.
77) The third swing lever (71), which is allowed to rotate in one direction by (78) and is located on the upstream side in the peeling direction of the cover tape (103), is lowered by an external drive. By pressing down the pusher (79), it is rotated clockwise against the biasing force of the spring (75).

cover tape (1) adhered to the surface of the tape (100);
03) is forcibly removed.

That is, the cover tape peeling device (60) and the auxiliary peeling mechanism (70) are capable of removing 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 (80) 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 one assembly is performed.

By the way, the tip (36a) of the chute (36) mentioned above
) is the cover tape (100) of the tape (100) by the cover tape peeling device (60) and the auxiliary peeling mechanism (70).
3) is separated from the first sprocket (31
), and the cover tape (100) of the tape (100).
3) to remove parts! (A) without peeling off the cover tape (103), 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) from popping out or sticking to the cover tape (103) at the tip (80a) of the vacuum chuck (80) when the cover tape (103) is peeled off. This reliably prevents the chip component (W) from being carried 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 (30) onto the component supply table (3), and is an L-shaped lock mechanism that is 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). On this occasion.

If tension is still applied to the cover tape (103), the cover tape (103) will already be applied the next time the tape is fed.
3) may come off, so as a means to prevent this, as shown in FIG. 22, the cover tape (103) is moved downward 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 components are encapsulated at approximately equal intervals is intermittently fed out to a predetermined component extraction position via a cover tape. a tape feeding means for peeling off the cover tape of the tape sent by the tape feeding means, a cover tape peeling means for peeling off the cover tape of the tape sent by the tape feeding means, and a chip-shaped component housed in the tape that is peeled off and exposed by the cover tape peeling means. In a parts supply device, the parts supply device is equipped with a parts removal means for taking out the parts via a take-out tool that can be raised and lowered at a predetermined parts removal position,
The cover tape peeling position by the cover tape peeling means is set to the component extraction position.

The removal tool of the component removal means suppresses the behavior of chip-shaped components stored in the tape when peeling the cover tape, and the removal reel is peeled off using an external driving force independent of the driving force of the tape feeding mechanism. Since the rotational force is obtained, the peeling speed of the cover tape can be adjusted arbitrarily, so it is possible to improve followability as the speed increases, and it also prevents chip components from sticking to the cover tape due to static electricity etc. when peeling. Even if it is attached, it has the excellent effect of reliably preventing chip parts from flying out, sticking to the cover tape and being taken away, or moving chip parts when using a removal tool such as a vacuum chuck. It is something that you have.

[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, and FIG. 2 is a schematic side view. FIG. 3 is a schematic plan view, FIG. 4 is a schematic side view of the component supply device according to the present invention, and FIGS. 5 to 7 are plan views of main parts of the reel holder showing the state in which the tape reel is held. 8 is an explanatory diagram schematically showing the internal structure of the tape delivery unit, FIG. 9 is a partially enlarged sectional view of the tape in which chip components are encapsulated, and FIG. 10 is a partially enlarged plan view of the tape. 11 and 12 are cross-sectional views schematically showing the chip component removal state at the component removal position,
FIG. 13 is a schematic cross-sectional view of the main part showing the tape feeding state of the tape feeding portion, and FIGS. 14 and 15 are schematic explanatory views showing the operating state of the tape push-down mechanism that gives slack to the tape. , FIGS. 16 to 21 are schematic explanatory diagrams showing the operating state of the cover tape peeling mechanism portion, and FIG. 22 is a schematic explanatory diagram showing another embodiment of the cover tape peeling mechanism portion according to the present invention. be. (2)... Turntable, (3)... Parts supply stand, '(1o)...
Tape reel (tape storage section). (30)...Tape sending unit, (31)(32)...Sprocket, (60)...
... Cover tape peeling device, (70) ... Auxiliary peeling mechanism, (71) (72) ... Swing lever, (80) ...
・Parts removal means (vacuum chuck), (100) ・
...Tape, (103) ...Cover tape. (A) ...Parts removal position. (W) ...Chip parts.

Claims (3)

[Claims] (1) A tape feeding means that intermittently feeds out a tape in which chip-like parts are encapsulated at approximately equal intervals via a cover tape to a predetermined component extraction position, and a cover for the tape fed by this tape feeding means. A cover tape peeling means for peeling off the tape, and a component extraction for taking out the chip-shaped parts stored in the tape, which are peeled off and exposed by the cover tape peeling means, at a predetermined component extraction position via a lifting tool that can be raised and lowered. and a means for setting the cover tape peeling position by the cover tape peeling means to a component removal position, and adjusting the attitude of the chip-shaped component stored in the tape when the cover tape is peeled off using the removal tool of the component removal means. A parts feeding device characterized by stabilizing the. (2) The cover tape peeling means is provided with an auxiliary peeling mechanism consisting of a pair of rocking levers that grips and swings the cover tape in the process of peeling in the peeling direction. The parts feeding device described in Section 1. (3) The cover tape peeling means includes a peeling reel that rotates and winds the peeled cover tape by an independent external drive system. The parts supply device according to any one of the above.