JP7312933B2 - Parts feeder - Google Patents

Description

The present invention relates to a component supply device that supplies components to a component mounting device.

2. Description of the Related Art As a component supply device that supplies components to a component mounting device, a tape feeder is often used that positions components at a component pick-up position by a component mounting mechanism by pitch-feeding a carrier tape containing components. The carrier tape is provided with a plurality of pockets for holding components, and the carrier tape whose pockets have been emptied after supplying components is configured to be sent to a discharge route by a sprocket (see, for example, Patent Document 1).

In the prior art shown in this patent document example, the tape is fed by a single sprocket, and the sprocket that feeds and positions the carrier tape to the pick-up position from which the component is taken out feeds the carrier tape with empty pockets to the discharge path on the downstream side of the pick-up position.

Japanese Patent No. 5544058

As shown in the examples of the above-mentioned patent documents, in the configuration in which the tape is fed by a single sprocket, it may be difficult to ensure smooth tape feeding when the carrier tape is ejected after the components have been taken out. In order to prevent such troubles in tape feeding, there is known a tape feeder provided with a discharge sprocket for discharging the carrier tape whose pocket is empty after component supply, in addition to the sprocket used for positioning the component supply. However, in a tape feeder having such a discharge sprocket, if the diameter of the discharge sprocket increases, the size of the tip of the tape feeder increases, which is contrary to the demand for compact equipment.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a parts supply apparatus having a structure having an ejection sprocket, which can be made compact by reducing the size of the tip portion thereof.

A component supply apparatus according to the present invention conveys a carrier tape having a plurality of pockets containing components and to which a cover tape for sealing the pockets is attached, and supplies the components to a component mounting apparatus. A first sprocket rotates in engagement with feed holes provided in the carrier tape to convey the components to a supply position to the component mounting apparatus, and a second sprocket rotates in engagement with the feed hole of the carrier tape after the components have been supplied, and ejects the carrier tape from the component supply apparatus. and the diameter of the second sprocket is smaller than the diameter of the first sprocket.

According to the present invention, it is possible to reduce the size of the tip portion of the parts feeding device having the discharge sprocket, thereby achieving compactness.

BRIEF DESCRIPTION OF THE DRAWINGS Explanatory drawing of the whole structure of the component supply apparatus of one embodiment of this invention Explanatory drawing of the tape conveying part of the component supply apparatus of one embodiment of the present invention BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a main part of a component supply device according to an embodiment of the present invention; FIG. 2 is a configuration explanatory diagram of an opening/closing cover of a component supply device according to an embodiment of the present invention; Explanatory drawing of the closed state of the opening/closing cover in the component supply device according to the embodiment of the present invention. FIG. 2 is a cross-sectional view of a peeling roller and a tape pressing member in a component feeding device according to an embodiment of the present invention; FIG. 2 is a functional explanatory diagram of a peeling roller and a tape pressing member in the component supply device according to one embodiment of the present invention; FIG. 3 is an explanatory diagram of automatic peeling of the cover tape by the peeling roller in the component supply device according to the embodiment of the present invention; Explanatory drawing of cover tape peeling at the first peeling position in the component supply device according to the embodiment of the present invention. Explanatory drawing of cover tape peeling at the second peeling position in the component supply device according to the embodiment of the present invention. Explanatory drawing of cover tape peeling at the second peeling position in the component supply device according to the embodiment of the present invention. FIG. 2 is an explanatory diagram of the configuration of the positioning portion of the opening/closing cover holding portion of the component feeding device according to the embodiment of the present invention; Explanatory drawing of the open state of the open/close cover of the component supply device according to the embodiment of the present invention. FIG. 2 is an explanatory diagram of gear backlash adjustment in the component feeding device according to one embodiment of the present invention; FIG. 2 is a configuration and functional explanatory diagram of a position adjustment tool used for gear backlash adjustment in a component supply device according to an embodiment of the present invention; FIG. 4 is an explanatory diagram of gear backlash adjustment using a position adjustment tool in the component supply device according to the embodiment of the present invention;

Embodiments of the present invention will now be described with reference to the drawings. First, referring to FIG. 1, the overall configuration of a tape feeder 1, which is a component supply device according to this embodiment, will be described. In FIG. 1, a tape feeder 1 has a function of supplying components to a component mounting apparatus (not shown).

The supply of components by the tape feeder 1 is carried out by conveying a carrier tape 20 having a plurality of pockets 20b (see FIG. 6) containing components P (see FIG. 3) and having cover tapes 20a applied to seal the pockets 20b. The carrier tape 20 is conveyed by rotating a sprocket provided with an engaging pin (see the engaging pin 7a shown in FIG. 3) that engages with a feed hole 20c (see FIG. 6) formed in the carrier tape 20.

The tape feeder 1 is constructed by arranging elements described below in a main body 2 made of a plate-shaped frame. These elements are covered by side covers 2f (see FIG. 3) provided on both sides. As shown in FIG. 1, the main body 2 is provided with a tape transport path 4 (transport path) that communicates from a tape insertion opening 4a that opens at the bottom on the upstream side to a supply position 4b that is set near the edge of the upper surface on the upstream side. A carrier tape 20 containing components is introduced from the tape insertion port 4a into the tape conveying path 4, conveyed to the upper surface of the main body 2 through the oblique portion provided in the middle, and reaches the supply position 4b.

Then, at the supply position 4b, the nozzle of the component mounting apparatus M (not shown) moves up and down (arrow b) to perform a component picking operation, whereby the component P is picked out from the main body 2. FIG. The picked component P is transferred to the component mounting apparatus by the mounting head (arrow c) and mounted on the substrate to be worked. Conveyance of the carrier tape 20 in the supply of the components is performed by the tape conveying section 3 (conveying section).

The tape conveying section 3 has a motor 5 , a conveying sprocket 6 , a positioning sprocket 7 and a discharge sprocket 8 . By driving the transport sprocket 6, the positioning sprocket 7 and the discharge sprocket 8 by the motor 5 as a drive source, the carrier tape 20 inserted from the tape insertion opening 4a is transported through the tape feeder 1 and positioned at the supply position 4b. The carrier tape 20 after the components P have been taken out at the supply position 4b is discharged to the downstream side of the tape feeder 1 by the discharge sprocket 8 via the front cover 9 arranged on the end face of the main body 2. FIG.

That is, the tape conveying section 3 has the function of conveying the carrier tape 20 along the tape conveying path 4 by engaging the sprockets described above with the carrier tape 20 . The cover tape 20a separated from the carrier tape 20 in the tape transport process is folded back upstream and collected into the cover tape storage portion 2b provided in the main body portion 2. As shown in FIG. The engagement of the carrier tape 20 with the positioning sprocket 7 and the discharge sprocket 8 is performed by pressing the carrier tape 20 against the positioning sprocket 7 and the discharge sprocket 8 with the opening/closing cover 18 .

A convex portion 2a for connection with a component mounting apparatus is provided on the bottom surface of the main body portion 2 on the upstream side. A connector 2c, an air joint 2d, and a hook 2e are provided on the convex portion 2a. When the tape feeder 1 is set on the feeder base provided in the component supply section of the component mounting apparatus, the connector 2c and the air joint 2d are fitted to the mating side (component mounting apparatus side) to be connected. At this time, the tape feeder 1 is positionally fixed to the feeder base by the hook 2e. In this connected state, it is possible to supply power and air to the tape feeder 1 from the component mounting apparatus, and to exchange signals between the component mounting apparatus and the tape feeder 1 .

A feeder control unit 10 for controlling the operation of the tape feeder 1 is incorporated in the convex portion 2a. When the tape feeder 1 is connected to the component mounting apparatus, the feeder control section 10 is electrically connected to the device control section of the component mounting apparatus through the connector 2c. As a result, an operation command from the device control section of the component mounting apparatus is transmitted to the tape feeder 1, and an operation feedback signal for the component feeding operation by the tape feeder 1 is transmitted to the component mounting apparatus.

Next, with reference to FIGS. 2 and 3, the detailed configuration of the tape conveying section 3 will be described. Note that FIG. 3 shows an AA modified cross section in FIG. In FIG. 2, a motor 5 held by a motor mounting member 5a, which is a support member, is arranged at the lower end portion on the downstream side of the main body portion 2. As shown in FIG. As shown in FIG. 3, the motor mounting member 5a is fixed to one side surface of the body portion 2. As shown in FIG. A first transmission gear 51 is meshed with a driving gear 50 coupled to a rotating shaft of a motor 5, and a third transmission gear 15 (fifth gear) is meshed with a second transmission gear 52 provided coaxially with the first transmission gear 51. A shaft 52a that supports the first transmission gear 51 and the second transmission gear 52 is rotatably fitted in a bearing 52b that is fixed to the main body 2, as shown in FIG.

In FIG. 3, a shaft 15b that supports the third transmission gear 15 is rotatably fitted in a bearing 15c that is fixed to a slide member 15a that is a support member. The slide member 15a is fitted into a guide groove 43 (FIG. 14) formed in the body portion 2 and is held so as to be freely adjustable in one direction. The third transmission gear 15 is engaged with a positioning sprocket gear 11 (first gear) coaxial with the positioning sprocket 7 that positions the carrier tape 20, and a conveying sprocket gear 14 (fourth gear) coaxial with the conveying sprocket 6 that conveys the carrier tape 20 to the positioning sprocket 7.

As shown in FIG. 3, the positioning sprocket gear 11 and the positioning sprocket 7 are supported by a shaft 11a, and the shaft 11a is rotatably fitted in a bearing 11b fixed to the body portion 2. As shown in FIG. The positioning sprocket gear 11 is meshed with a fourth transmission gear 13 (third gear) for transmitting torque to a discharge sprocket gear 12 (second gear) coaxial with the discharge sprocket 8 that discharges the carrier tape 20. The conveying sprocket gear 14 is meshed with a fifth transmission gear 17 (seventh gear) that transmits torque to a peeling roller gear 16 (sixth gear) for driving a tape peeling mechanism 21 (see FIG. 5) that feeds the cover tape 20a peeled from the carrier tape 20.

In the above configuration, by driving the motor 5 to generate torque, the torque is transmitted to the positioning sprocket gear 11, the discharge sprocket gear 12, and the transfer sprocket gear 14 via a plurality of gears. As a result, torque is transmitted to the positioning sprocket 7, the ejection sprocket 8, and the transportation sprocket 6, which are provided coaxially with the positioning sprocket gear 11, the ejection sprocket gear 12, and the transportation sprocket gear .

The positioning sprocket 7 is a first sprocket that engages with feed holes provided in the carrier tape 20 and rotates to convey the component P to the supply position 4b to the component mounting apparatus. The ejection sprocket 8 is a second sprocket that engages with the feeding holes 20c of the carrier tape 20 after the parts P have been supplied, rotates, and ejects the carrier tape 20 from the tape feeder 1. FIG. The conveying sprocket 6 is a third sprocket that engages with the feed holes 20c of the carrier tape 20 and rotates to convey the carrier tape 20 to the first sprocket.

Of these three sprockets, the upper surfaces of the positioning sprocket 7 and the discharge sprocket 8 are provided with an opening/closing cover 18 (cover) having a function of pressing the carrier tape 20 conveyed by the conveying sprocket gear 14. This pressing causes the engagement pins of the positioning sprocket 7 and the discharge sprocket 8 to engage with the feed holes 20c of the carrier tape 20 (see FIG. 3). That is, the tape conveying section 3 has an opening/closing cover 18 for pressing the carrier tape 20 against the positioning sprocket 7 as the first sprocket and the ejection sprocket 8 as the second sprocket.

That is, the motor 5 generates torque for driving the positioning sprocket 7 as the first sprocket, the discharge sprocket 8 as the second sprocket, and the transfer sprocket 6 as the third sprocket. The tape conveying section 3 having the above-described structure has a plurality of gears for transmitting the torque generated by the motor 5 to the positioning sprocket 7 , the ejection sprocket 8 and the conveying sprocket 6 . These gears include a positioning sprocket gear 11 (first gear) coaxial with the positioning sprocket 7 as the first sprocket, a discharge sprocket gear 12 (second gear) coaxial with the discharge sprocket 8 as the second sprocket, and a fourth transmission gear 13 (third gear) that meshes with the positioning sprocket gear 11 and the discharge sprocket gear 12.

As shown in FIG. 3, an engagement pin 7a is provided on the outer circumference of the positioning sprocket 7. As shown in FIG. Feed holes 20c (see FIG. 6) are formed in the carrier tape 20 at a pitch corresponding to the pitch of the engaging pins 7a. By intermittently rotating the positioning sprocket 7 with the engagement pins 7a engaged with the feed holes, the carrier tape 20 is fed along the tape transport path 4 at a predetermined feed pitch. Similarly, the discharge sprocket 8 and the transfer sprocket 6 are intermittently rotated to feed the carrier tape 20 at a predetermined feed pitch.

The plurality of gears that the tape conveying section 3 has further includes the following gears. That is, these gears include a transport sprocket gear 14 (fourth gear) coaxial with the transport sprocket 6, which is the third sprocket, and a third transmission gear 15 (fifth gear) that meshes with the positioning sprocket gear 11 (first gear) and the transport sprocket gear 14 (fourth gear).

Furthermore, the plurality of gears described above further include a peeling roller gear 16 (sixth gear) coaxial with the driving peeling roller 22 of the tape peeling mechanism 21 that feeds and picks up the cover tape 20a peeled from the carrier tape 20, and a fifth transmission gear 17 (seventh gear) that meshes with the peeling roller gear 16 and the conveying sprocket gear 14. In this embodiment, the tape conveying section 3 having a plurality of gears arranged therein rotates the conveying sprocket 6, the positioning sprocket 7, and the discharge sprocket 8 using a single motor 5 as a driving source.

As a result, the carrier tape 20 introduced from the tape insertion port 4a is conveyed to the positioning sprocket 7 by the conveying sprocket 6. As shown in FIG. Then, the positioning sprocket 7 positions the carrier tape 20 at the supply position 4b. Furthermore, the carrier tape 20 from which the components P have been taken out at the supply position 4b is discharged to the downstream side of the tape feeder 1 by the discharge sprocket 8. As shown in FIG. With such a configuration, the carrier tape 20 can be stably and reliably conveyed in the tape feeder 1 .

In this embodiment, the diameter of the ejection sprocket 8, which is the second sprocket, is set smaller than the diameter of the positioning sprocket 7, which is the first sprocket. As a result, the side of the tape feeder 1 that is close to the component mounting apparatus can be made compact, and the component supply section to which the plurality of tape feeders 1 are mounted can be miniaturized in the component mounting apparatus.

Next, with reference to FIGS. 4 and 5, the configuration and function of the opening/closing cover 18 that covers the upper surfaces of the positioning sprocket 7 and the ejection sprocket 8 and presses the carrier tape 20 against the positioning sprocket 7 and the ejection sprocket 8 to engage them will be described. FIG. 4A is a plan view of the opening/closing cover holding portion 19 (cover holding portion) holding the opening/closing cover 18, which is pivotally supported by the block 31 fixed to the main body portion 2 by the support shaft 32. FIG. 4(b) is a plan view showing the opening/closing cover 18 alone shown in FIG. 4(a).

The opening/closing cover 18 is a member having a substantially U-shaped cross section with an open bottom side. The upper surface of the opening/closing cover 18 is a cover portion 18a (see FIG. 3) that abuts and presses the carrier tape 20. As shown in FIG. The cover portion 18a is provided with a component take-out opening 18b for taking out the component P at the supply position 4b. The component extraction opening 18b functions as a supply section for supplying the component P to the component mounting apparatus.

Further, the cover portion 18a is provided with a first relief portion 18d and a second relief portion 18e for releasing the engagement pin 7a of the positioning sprocket 7 and the engagement pin 8a of the ejection sprocket 8, respectively, when the opening/closing cover 18 is lowered and closed with respect to the main body portion 2 as shown in FIG. Further, the cover portion 18a is provided with a notch portion 18c formed by notching the first relief portion 18d to one side surface. As shown in FIG. 4(b), the opening/closing cover 18 is provided with a base portion 18f having both side surfaces extending upstream. Further, the opening/closing cover 18 is provided with an engaging portion 18g (see FIG. 5) formed by extending the cover portion 18a toward the downstream side.

In FIG. 5, a block 31 is a rectangular block-shaped member and fixed to the main body 2 . A substantially plate-shaped tape pressing member 30 is arranged along the tape transport path 4 between the lower surface side of the block 31 and the upper surface of the tape transport path 4 . The tape pressing member 30 has a function of contacting the upper surface of the carrier tape 20 conveyed along the tape conveying path 4 and pressing it from above (see FIG. 6).

The tape pressing member 30 is urged downward by a spring member 33 arranged between it and the block 31 so that it can be displaced in the thickness direction of the carrier tape 20 . As a result, a plurality of types of carrier tapes 20 having different thicknesses can be stably conveyed without forming gaps on the pressing surface.

The opening/closing cover holding portion 19 is rotatably supported on the block 31 via a support shaft 32 . The opening/closing cover holding portion 19 is a substantially disk-shaped member having an extension portion 19c partially extending in the tangential direction. A base portion 18f of the opening/closing cover 18 shown in FIG. 4B is fixed to the extending portion 19c by screwing. With such a configuration, the opening/closing cover 18 is held by the opening/closing cover holding portion 19 with respect to the main body portion 2 of the tape feeder 1 so as to be openable and closable.

FIG. 5 shows a state in which the opening/closing cover 18 held by the opening/closing cover holding portion 19 is closed. In this state, the opening/closing cover 18 is kept closed by the lock mechanism provided on the front cover 9 . That is, the front cover 9 includes an elevating portion 9a that can slide vertically with respect to the base portion 9b (arrow d) and that is biased downward by a biasing spring member 9c. The sliding motion of the elevating section 9a is guided by a guide mechanism combining a long hole 9e provided in the elevating section 9a and a pin 9d provided in the base 9b.

A locking pin 9f (see FIG. 4(a)) is provided on the upper portion of the lifting portion 9a, and the locking pin 9f has a shape capable of locking a locking portion 18g extending from the downstream end of the opening/closing cover 18. As shown in FIG. In order to close the opening/closing cover 18, the lifting portion 9a is first lifted to raise the locking pin 9f, and in this state the opening/closing cover 18 is closed to position the locking portion 18g below the locking pin 9f. Next, in this state, the lifting portion 9a is lowered to bring the locking pin 9f into contact with the locking portion 18g. As a result, the engaging portion 18g is pressed downward by the biasing force of the biasing spring member 9c and locked, and the open/close cover 18 is kept closed.

To open the opening/closing cover 18 from the closed state, the opening operation shown in FIG. 9 is performed. That is, first, the elevating portion 9a is raised against the biasing force of the biasing spring member 9c to release the locked state in which the locking portion 18g is held down by the locking pin 9f. Next, the opening/closing cover 18 is lifted to the open state shown in FIG. 9 (arrow m).

The opening/closing cover holding portion 19 in the present embodiment is provided with a positioning portion configured as described below for positioning the opening/closing cover holding portion 19 in the open state and the closed state in the opening/closing operation described above. That is, as shown in FIG. 12, two concave portions, a first engaging portion 19a and a second engaging portion 19b, corresponding to the open/close state of the open/close cover 18 are formed on the outer periphery of the open/close cover holding portion 19. As shown in FIG.

Further, a positioning member 40 having a positioning projection 40a engageable with the first engaging portion 19a and the second engaging portion 19b is arranged on the outer periphery of the opening/closing cover holding portion 19. As shown in FIG. The positioning member 40 is rotatable around a fulcrum 40b, and is urged in the direction of arrow q by a biasing spring member 41 coupled to the opposite end of the positioning projection 40a, that is, in the direction of engaging the positioning projection 40a with the first engaging portion 19a and the second engaging portion 19b. As a result, the opening/closing cover 18 is positioned as described below.

First, when opening the opening/closing cover 18, the opening/closing cover 18 is lifted (arrow r) as shown in FIG. When the opening/closing cover 18 is to be closed, the positioning convex portion 40a is engaged with the second engaging portion 19b as shown in FIG.

As a result, the opening/closing cover holding portion 19 can be positioned according to the opening/closing state of the opening/closing cover 18 . That is, in the present embodiment, the opening/closing cover holding portion 19 has a first engaging portion 19a that engages with the positioning convex portion 40a when the opening/closing cover 18 is opened, and a second engaging portion 19b that engages with the positioning convex portion 40a when the opening/closing cover 18 is closed.

12, in order to stabilize the engaging state of the carrier tape 20 with the positioning sprocket 7 and the discharge sprocket 8 that constitute the tape transport section 3, it is desirable that a biasing force F that presses the open/close cover 18 against the tape transport section 3 acts. In order to achieve this biasing force F with a simple structure, it is desirable to provide a biasing means 19d having a function of applying the above-described biasing force F to the extending portion 19c connecting the opening/closing cover 18 to the opening/closing cover holding portion 19. As the biasing means 19d, for example, an elastic member such as a coiled spring that generates elastic force in the rotational direction can be used.

Next, with reference to FIGS. 4 and 5, the configuration and function of the tape peeling mechanism 21 for picking up the cover tape 20a peeled from the carrier tape 20 will be described. As shown in FIG. 5 , a tape peeling mechanism 21 is arranged in the tape conveying path 4 on the upstream side of the positioning sprocket 7 . The tape peeling mechanism 21 includes a driving peeling roller 22 and a driven peeling roller 23, which are a pair of rollers for picking up the cover tape 20a peeled from the carrier tape 20. As shown in FIG.

The driving peeling roller 22 and the driven peeling roller 23 are toothed rollers provided with mutually meshing teeth on the outer periphery, and have a function of pulling the cover tape 20a from the carrier tape 20 by sandwiching the cover tape 20a between the meshing teeth. As shown in FIG. 5 , one of the pair of rollers, the driving peeling roller 22 , is rotatably provided in the opening/closing cover holding portion 19 . The driven peeling roller 23, which is one of the pair of rollers, is rotatably provided at the downstream end of the tape pressing member 30 arranged along the tape transport path 4 on the lower surface side of the block 31. As shown in FIG.

A tape cover 24 is provided downstream of the tape pressing member 30 in the tape transport path 4 along the upper surface of the tape transport path 4 up to a position before the supply position 4b. The tape cover 24 is fixed to the tape pressing member 30 and is displaceable in the thickness direction of the carrier tape 20 together with the tape pressing member 30 . The tape cover 24 functions as a first cover that covers the upper surface of the carrier tape 20 from which the cover tape 20 a has been peeled by the tape peeling mechanism 21 .

That is, in the carrier tape 20 with the cover tape 20a peeled off, the pocket 20b is exposed and the stored component P becomes unstable. By covering the upper surface of the carrier tape 20 with the tape cover 24, the carrier tape 20 after the cover tape 20a has been peeled off can be stably conveyed without causing problems such as falling off of the parts P.

It is also possible to make the downstream end of the tape cover 24 function as a peeling section 24a for peeling the cover tape 20a from the carrier tape 20 (see FIGS. 10 and 11). In this case, the tape cover 24 is a first cover provided with a peeling portion 24a for holding down the carrier tape 20 and peeling off the cover tape 20a.

In the tape feeder 1 according to the present embodiment, the tape cover 24, which is the first cover, is fixed to the tape pressing member 30 that presses the carrier tape 20 upstream of the pair of driving peeling roller 22 and driven peeling roller 23. The opening/closing cover 18, which is the second cover, is provided with a component extraction opening 18b as a supply section for supplying components P to the component mounting apparatus, and is configured to be openable and closable with respect to the main body of the tape feeder 1. FIG.

Next, the driving mechanism of the tape peeling mechanism 21 will be described. As shown in FIG. 4, the driving peeling roller 22 is provided coaxially with the peeling roller gear 16 . A fifth transmission gear 17 that meshes with the peeling roller gear 16 is provided coaxially with the opening/closing cover holding portion 19 . In the opening/closing cover holding portion 19, the drive peeling roller 22 is arranged at a position where the coaxial peeling roller gear 16 meshes with the fifth transmission gear 17 (see also FIG. 2).

Therefore, when the opening/closing cover holding portion 19 rotates as the opening/closing cover 18 opens and closes, the peeling roller gear 16 is always in mesh with the fifth transmission gear 17, and when the opening/closing cover holding portion 19 rotates, the peeling roller gear 16 rolls along the outer circumference of the fifth transmission gear 17. In this rolling, the rotation is transmitted from the fifth transmission gear 17 to the peeling roller gear 16 regardless of the position of the peeling roller gear 16, and the drive peeling roller 22 is rotationally driven.

That is, in the above configuration, the fifth transmission gear 17 is a roller driving gear in which a peeling roller gear 16 (roller gear) coaxial with one driving peeling roller 22 is rotatably provided along the outer circumference. One of the pair of rollers, the driving peeling roller 22, rolls along the outer circumference of the fifth transmission gear 17 as the opening/closing cover holding portion 19 is opened and closed, and is rotationally driven via the fifth transmission gear 17, which is a roller driving gear, and the peeling roller gear 16, which is a roller gear.

As shown in FIG. 5, the driving peeling roller 22 rotated in this way meshes with the driven peeling roller 23 only when the opening/closing cover 18 is closed. That is, the tape peeling mechanism 21 in this embodiment is configured to perform the function of pinching the cover tape 20a between the driving peeling roller 22 and the driven peeling roller 23 only when the opening/closing cover 18 is closed.

Next, with reference to FIGS. 6 and 7, the detailed configuration of the driven peeling roller 23 constituting the tape peeling mechanism 21 and the guide mechanism for guiding the carrier tape 20 conveyed to the tape peeling mechanism 21 will be described. 6A shows a cross section of the downstream end of the tape pressing member 30 in a direction orthogonal to the transport direction of the carrier tape 20. FIG. In FIG. 6A, the upper surface of the main body 2 is a tape transport surface 2i for transporting the carrier tape 20. As shown in FIG. The tape conveying path 4 is open to the tape conveying surface 2i, and the carrier tape 20 is set in the tape conveying path 4 with the pocket 20b positioned in the conveying state. In this set state, the carrier tape 20 is in contact with the tape transport surface 2i, and the convex portion 30a provided on the lower surface of the tape pressing member 30 is in contact with the upper surface of the cover tape 20a.

As shown in FIG. 6B, a spring member 33, which is an elastic body, is attached to a concave portion 30b formed on the upper surface of the tape pressing member 30 and a concave portion 31a formed on the lower surface of the block 31. As shown in FIG. The spring member 33 is a compression spring, and exerts an urging force in the pressing direction between the fixed block 31 and the tape pressing member 30 that can be displaced in the thickness direction. As a result, the convex portion 30a formed on the lower surface of the tape pressing member 30 comes into contact with the cover tape 20a and presses the carrier tape 20 against the tape conveying surface 2i (arrow e).

In the above configuration, the tape pressing member 30 is connected to a block 31 fixed to the body portion 2 of the tape feeder 1 by a spring member 33 as an elastic body. This makes it possible to absorb the difference in thickness of the carrier tape 20 to be conveyed. Further, the tape holding member 30 has a convex portion 30a that can come into contact with the cover tape 20a on the upper surface of the carrier tape 20. As shown in FIG. As a result, in the structure in which the carrier tape 20 is pressed by the tape pressing member 30, it is possible to prevent the problem that the tape pressing member 30 sticks to the cover tape 20a and interferes with the smooth sliding operation.

6A, a peeling roller support shaft 36 is rotatably held via a bearing 35 in a bearing portion 34 provided at one side end portion of the tape pressing member 30. As shown in FIG. A roller member 37 constituting the driven peeling roller 23 is coupled to the peeling roller support shaft 36 . The roller member 37 is a toothed roller member provided with teeth on its outer circumference that mesh with the drive peeling roller 22, and two circumferential grooves 37a are formed on its outer circumference.

A entanglement prevention member 38 shown in FIG. 7 engages with the circumferential groove 37a in a form that allows the rotation of the roller member 37 around the peeling roller support shaft 36. As shown in FIG. The entanglement prevention member 38 is a plate member that engages with the inner periphery of the circumferential groove 37a in the form of an E-ring, and its upstream end is fixed to the block 31 (see FIG. 7).

That is, the roller member 37 is supported around the peeling roller support shaft 36 and is held in a state where it is allowed to rotate by the entanglement preventing member 38 . 4, illustration of the entanglement prevention member 38 is omitted. Further, the driving separation roller 22 is also equipped with a entanglement prevention member 38 having a similar structure. The presence of the entanglement prevention member 38 in the form of being fitted in the circumferential groove 37a formed in the roller member 37 provides the following effects.

In tape peeling in which the cover tape 20a is pinched and pulled by a pair of driving peeling rollers 22 and driven peeling rollers 23, there is a possibility that the sandwiched cover tape 20a winds around one of the peeling rollers, causing tape entanglement that hinders normal tape pulling. To solve this problem, the entanglement prevention member 38 as shown in the present embodiment is provided to prevent the cover tape 20a from being entangled in the outer circumferences of the driving peeling roller 22 and the driven peeling roller 23. FIG.

That is, the entanglement prevention member 38 functions as an entanglement prevention portion that prevents the cover tape 20a picked up by the pair of driving peeling roller 22 and driven peeling roller 23 from being entangled. The driven peeling roller 23, which is one of the pair of the driving peeling roller 22 and the driven peeling roller 23, is connected to a block 31 fixed to the main body 2 of the tape feeder 1 via an entanglement prevention member 38 as an entanglement prevention portion.

In the above-described configuration, the driven peeling roller 23 of the tape peeling mechanism 21 is held by the tape pressing member 30 via the peeling roller support shaft 36 . Thus, even if the thickness of the target carrier tape 20 changes, the driven peeling roller 23 moves along with the tape pressing member 30 in the thickness direction of the carrier tape 20, and the distance of the driven peeling roller 23 from the cover tape 20a is kept constant.

In FIG. 6(a), the bottom surface of the tape transport path 4 has air ejection holes 2h at positions corresponding to the tape peeling mechanism 21 consisting of a pair of rollers (see FIG. 7). The air ejection holes 2 h eject air supplied through the air joint 2 d (see FIG. 1) and the air supply holes 2 g between the driven separation roller 22 and the driven separation roller 23 . As a result, the leading edge of the cover tape 20 a peeled from the carrier tape 20 is blown up and introduced between the driving peeling roller 22 and the driven peeling roller 23 .

That is, the air joint 2d, the air supply hole 2g, and the air ejection holes for supplying air are provided at positions corresponding to the driving peeling roller 22 and the driven peeling roller 23, which are a pair of rollers, in the transport path of the tape transport path 4 of the carrier tape 20, and form an introduction portion for introducing the cover tape 20a between the driving peeling roller 22 and the driven peeling roller 23 by using the flow of gas jetted from the air ejection holes. At this time, as described above, the distance between the driven peeling roller 23 and the cover tape 20a is kept constant, so that the leading edge of the cover tape 20a blown up can be reliably caught by the driving peeling roller 22 and the driven peeling roller 23.

In the example shown in the present embodiment, air ejected from the air ejection holes is used as the gas flow described above. Instead of blowing air, a negative pressure may be applied between the driving peeling roller 22 and the driven peeling roller 23, and the negative pressure may be used to introduce the cover tape 20a between the driving peeling roller 22 and the driven peeling roller 23.

FIG. 8 shows the take-up operation of the cover tape 20a by the introduction section described above. This take-up operation is automatic peeling performed with the opening/closing cover 18 closed. First, as shown in FIG. 8(a), the carrier tape 20 from which a predetermined length of the cover tape 20a has been peeled off from the carrier tape 20 is conveyed along the tape conveying path 4 (arrow g). At this time, in the tape peeling mechanism 21, the driving peeling roller 22 and the driven peeling roller 23 are both in a rotating state as the driving peeling roller 22 is rotationally driven (arrows i and j). Air for introduction is ejected from the air ejection holes provided in the tape transport path 4 (arrow h).

When the transport is continued in this state, the peeled cover tape 20a at the leading end reaches the tape peeling mechanism 21 as shown in FIG. 8(b). As a result, the cover tape 20 a at the leading end is blown up by the action of the air ejected from the air ejection holes and introduced between the driving peeling roller 22 and the driven peeling roller 23 . By sandwiching the cover tape 20a between the rotating driving peeling roller 22 and the driven peeling roller 23, the cover tape 20a is peeled off from the carrier tape 20 and taken off as shown in FIG. 8(c).

FIG. 9 shows a state in which the opening/closing cover 18 is opened after the automatic peeling described above. First, the elevating portion 9a of the front cover 9 is lifted (arrow k) to release the locking of the locking portion 18g by the locking pin 9f. Next, the opening/closing cover 18 is lifted (arrow m), the opening/closing cover holding portion 19 is rotated around the support shaft 32, and as shown in FIG. 13, the positioning protrusion 40a is engaged with the first engaging portion 19a. As a result, the opening/closing cover 18 is kept open with respect to the main body 2 .

Next, with reference to FIGS. 10 and 11, an embodiment in which the cover tape 20a is peeled off using the peeling portion 24a of the tape cover 24 without using the automatic peeling by the tape peeling mechanism 21 will be described. As in the present embodiment, when a plurality of types of carrier tapes 20 are to be worked, the peeling characteristics of the cover tape 20a differ depending on the carrier tapes 20 to be worked. That is, there are not only tape types to which automatic peeling can be applied without problems as shown in FIG. 8, but also tape types for which automatic peeling is difficult without operation errors.

Therefore, in the present embodiment, for tape types for which automatic peeling is difficult to apply, the cover tape 20a is peeled using the peeling portion 24a of the tape cover 24, as described below. In this mode, first, as shown in FIG. 10, the opening/closing cover 18 is opened (arrow n). In this state, the carrier tape 20 is fed along the tape conveying path 4, passed under the tape cover 24, and its leading end reaches the front cover 9 via above the positioning sprocket 7 and discharge sprocket 8. - 特許庁Thereby, the cover tape 20a is exposed on the downstream side of the tape cover 24 .

Then, the exposed cover tape 20a is peeled off from the carrier tape 20, and as shown in FIG. The peeled cover tape 20a is guided to the cover tape storage section 2b on the upstream side through between the opening/closing cover 18 and the tape cover 24 (arrow o).

Next, as shown in FIG. 11, the opening/closing cover 18 is closed and locked by the front cover 9 . That is, a downward biasing force is applied to the biasing spring member 9c of the elevating portion 9a of the front cover 9 (arrow p), and the locking portion 18g of the opening/closing cover 18 is pressed downward by the locking pin 9f. In this state, the driving peeling roller 22 fixed to the opening/closing cover holding portion 19 is positioned to mesh with the driven peeling roller 23 . As a result, the cover tape 20a is nipped between the pair of driving peeling roller 22 and the driven peeling roller 23 and pulled upstream.

That is, in the peeling mode using the peeling portion 24a of the tape cover 24, the cover tape 20a is peeled back by the peeling portion 24a of the tape cover 24, which is the first cover, in the direction opposite to the conveying direction of the carrier tape 20. Then, the cover tape 20a peeled by the peeling portion 24a is taken off by a pair of drive peeling roller 22 and driven peeling roller 23 through between the tape cover 24 as the first cover and the opening/closing cover 18 as the second cover.

In other words, the tape feeder 1 according to the present embodiment includes the first stripping path for performing the above-described automatic stripping, and the second stripping path for stripping the cover tape 20a using the stripping portion 24a of the tape cover 24.

That is, the first peeling path has a tape conveying path 4 in which the carrier tape 20 is conveyed, and a pair of driving peeling rollers 22 and driven peeling rollers 23 that pinch the cover tape 20a at the tip of the carrier tape 20 and peel the cover tape 20a from the carrier tape 20.

The second peeling path has a tape conveying path 4 along which the carrier tape 20 is conveyed, a tape cover 24 provided with a peeling portion 24a that holds down the carrier tape 20 and peels off the cover tape 20a from the carrier tape 20 at the end of the carrier tape 20 in the conveying direction, and a route that guides the cover tape 20a peeled off by the peeling portion 24a to the pair of driving peeling rollers 22 and driven peeling rollers 23.

Next, with reference to FIGS. 14, 15, and 16, the backlash adjusting function of the tape conveying section 3 provided in the tape feeder 1 according to the present embodiment will be described. In the tape feeder 1, in order to ensure high accuracy of the parts stop position at the supply position 4b, it is required to transmit the torque generated by the motor 5, which is the drive source, to the positioning sprocket 7 with high accuracy. For this reason, the tape transport section 3 shown in the present embodiment employs the following configuration so that the backlash can be adjusted with high precision and good workability at the key points of torque transmission.

FIG. 14 shows a transmission path for transmitting the torque generated by the motor 5 in the tape conveying section 3 to the positioning sprocket 7. As shown in FIG. In this transmission path, the motor 5 and the drive gear 50, the first transmission gear 51 and the second transmission gear 52, and the positioning sprocket 7 and the positioning sprocket gear 11 are coaxial, respectively. Therefore, the locations where rotation transmission errors may occur are limited to the transmission locations from the drive gear 50 to the first transmission gear 51 and the transmission locations from the second transmission gear 52 to the positioning sprocket gear 11 via the third transmission gear 15.

For this reason, in the present embodiment, at least one gear to be adjusted is rotatably supported, and a support member displaceable with respect to the main body 2 of the tape feeder 1 is provided so that the backlash at the two transmission points can be adjusted with high accuracy and good workability.

First, at least one gear includes a drive gear 50 provided coaxially with the motor 5 . The motor mounting member 5a supports the motor 5 and the driving gear 50, and by finely adjusting the position of the motor mounting member 5a, the relative position between the driving gear 50 and the first transmission gear 51 is finely adjusted (arrow s) to adjust the backlash. Here, the motor mounting member 5a is connected to the main body portion 2 of the tape feeder 1 through a support shaft 5b, and the motor mounting member 5a can be displaced by rotating around the support shaft 5b.

At least one gear includes a third transmission gear 15 meshing with the positioning sprocket gear 11 and the second transmission gear 52 . A slide member 15a supporting the third transmission gear 15 is fitted in a guide groove 43 (see also FIG. 2) formed in the body portion 2 of the tape feeder 1. As shown in FIG. That is, the slide member 15a is guided by the guide surface 43a of the guide groove 43 with respect to the main body 2 of the tape feeder 1 in the predetermined direction indicated by the arrow t. Here, the predetermined direction indicated by the arrow t is a direction in which the relative positions of the third transmission gear 15, the positioning sprocket gear 11, and the second transmission gear 52 can be finely adjusted together, and the slide member 15a can be slidably displaced in this predetermined direction.

The motor mounting member 5a and the slide member 15a are mounted so that the rotational displacement of the motor mounting member 5a around the support shaft 5b and the sliding displacement of the slide member 15a in a predetermined direction can be adjusted by a position adjustment tool shown in FIG. That is, fine adjustment of the positions of the motor mounting member 5a and the slide member 15a is performed by fitting a position adjustment tool 44 described below into the adjustment openings 42 provided in each of the motor mounting member 5a and the slide member 15a and performing a predetermined adjustment operation. After the fine adjustment is executed, the motor mounting member 5a and the slide member 15a are fixed to the main body 2 by tightening the fixing screws 5c and 15d, respectively.

FIG. 15 shows the configuration and adjustment operation of the position adjustment tool 44 used for this fine adjustment. As shown in FIG. 15(a), the position adjustment tool 44 has a circular member 46 coupled with a cylindrical rod-shaped operating member 45, and has a projecting portion 45a in which the tip of the operating member 45 protrudes from the circular member 46.

The position adjusting tool 44 is an eccentric tool, and as shown in FIG. 15(b), the axis of the operating member 45 is eccentric with respect to the center of the circular member 46 by a predetermined eccentric amount e. Fitting portions 2j for fitting projections 45a are provided in the body portion 2 at positions corresponding to the adjustment openings 42 formed in the motor mounting member 5a and the slide member 15a.

In order to finely adjust the positions of the motor mounting member 5a and the slide member 15a by the position adjustment tool 44, as shown in FIG. In this state, the operating member 45 is rotated (arrow u) to rotate the circular member 46 around the operating member 45 . At this time, by adjusting the rotation direction and rotation amount of the operation member 45, the motor mounting member 5a and the slide member 15a can be displaced by a desired adjustment amount (arrow v).

For this position adjustment, as shown in FIG. 16, first, the fixing screws 5c and 15d are loosened to make the motor mounting member 5a and the slide member 15a displaceable, and then the working operation shown in FIG. 15(c) is performed. That is, the position adjustment tool 44 is sequentially inserted into the adjustment openings 42 of the motor mounting member 5a and the slide member 15a, and the operation shown in FIG.

By this operation, the motor mounting member 5a is displaced around the support shaft 5b so that the drive gear 50 moves in the direction of the arrow s. Similarly, the slide member 15a is displaced so that the third transmission gear 15 slides in the arrow t direction. This displacement adjusts the backlash of the meshing portions of the driving gear 50 and the first transmission gear 51 , the third transmission gear 15 and the positioning sprocket gear 11 and the second transmission gear 52 . After adjusting the backlash in this manner, the fixing screws 5c and 15d are tightened to fix the positions of the motor mounting member 5a and the slide member 15a.

As described above, the tape feeder 1 shown in the present embodiment has a plurality of pockets 20b in which components are stored, and transports the carrier tape 20 to which the cover tape 20a for sealing the pockets 20b is attached, and supplies the components to the component mounting apparatus. An opening/closing cover holding portion 19 that can be opened and closed, and a pair of driving peeling rollers 22 and driven peeling rollers 23 that take off the cover tape 20a peeled from the carrier tape 20 are provided. With this configuration, the opening and closing of the opening and closing cover 18 and the opening and closing of the pair of driving peeling roller 22 and driven peeling roller 23 can be performed simultaneously in a single operation, thereby simplifying the preparatory work for setting the carrier tape 20 and improving work efficiency.

Further, the tape feeder 1 shown in the present embodiment has the same configuration as described above, and includes a pair of drive peeling rollers 22 and a driven peeling roller 23 for peeling the cover tape 20a from the carrier tape 20 by pinching and pulling the cover tape 20a, and a tape cover 24 provided with a peeling portion 24a for holding down the carrier tape 20 and peeling the cover tape 20a. With this configuration, even when a plurality of types of carrier tapes 20 having different characteristics are targeted, the cover tape 20a can be reliably peeled off from the carrier tape 20 by a peeling method according to the characteristics of the carrier tape 20, and the occurrence of mounting errors can be suppressed.

Further, the tape feeder 1 shown in the present embodiment is the tape feeder 1 having the same configuration as described above. have set. As a result, in the tape feeder 1 having the discharge sprocket 8, it is possible to reduce the size of the leading end portion and realize compactness.

The tape feeder 1 shown in the present embodiment has the same configuration as described above, and is provided on the tape transport path 4 along which the carrier tape 20 is transported. It is rotatably provided. As a result, in the structure in which the cover tape 20a is taken off by a pair of rollers, the cover tape 20a can be taken off stably even when the carrier tape 20 is thin.

The tape feeder 1 shown in the present embodiment has the same configuration as described above, and is provided with a positioning sprocket 7 that rotates in engagement with the feed hole 20c provided in the carrier tape 20 and conveys the component to the supply position to the component mounting apparatus, a motor 5 that generates a torque for rotating the positioning sprocket 7, and at least one gear that transmits the torque to the positioning sprocket 7. The at least one gear is rotatably supported, and a motor mounting member 5a that can be displaced with respect to the main body 2 of the tape feeder 1 slides. It is set as the structure which has the member 15a. As a result, it is possible to easily adjust the backlash, and to ensure high component stop position accuracy.

INDUSTRIAL APPLICABILITY The component feeding device of the present invention has the effect that it is possible to reduce the size of the leading end portion of the component feeding device having the structure with the ejection sprocket, thereby achieving compactness, and is useful in the field of component mounting where components taken out from a tape feeder are mounted on a substrate.

1 tape feeder 2 main body 3 tape conveying section 4 tape conveying path 5 motor 5a motor mounting member 6 conveying sprocket 7 positioning sprocket 8 discharging sprocket 10 feeder control section 11 positioning sprocket gear 12 discharging sprocket gear 13 fourth transmission gear 14 conveying sprocket gear 15 third transmission gear 15a slide member 16 peeling roller gear 17 fifth transmission gear 18 open/close cover 18a cover portion 18b component removal opening 19 open/close cover holding portion 19a first engaging portion 19b second engaging portion 19d biasing means 20 carrier tape 20a cover tape 20b pocket 21 tape peeling mechanism 22 drive peeling roller 23 driven peeling roller 24 tape cover 24a peeling portion 30 tape pressing member 30a convex Part 31 Block 33 Spring member 38 Entrainment prevention member 44 Position adjustment tool 46 Circular member

Claims (7)

A component supply device that conveys a carrier tape having a plurality of pockets in which components are stored and to which a cover tape that seals the pockets is attached, and supplies the components to a component mounting device,
a first sprocket that engages with feed holes provided in the carrier tape and rotates to convey the component to a supply position to the component mounting apparatus;
a second sprocket that rotates in engagement with the feed hole of the carrier tape after the component has been supplied, and ejects the carrier tape from the component supply device;
The parts feeding device, wherein the diameter of the second sprocket is smaller than the diameter of the first sprocket. The component supply device according to claim 1, further comprising:
a motor that generates torque to drive the first sprocket and the second sprocket;
A component feeding device comprising a plurality of gears for transmitting torque generated by the motor to the first sprocket and the second sprocket. The component supply device according to claim 2, further comprising:
The plurality of gears includes a first gear coaxial with the first sprocket, a second gear coaxial with the second sprocket, and a third gear meshing with the first gear and the second gear. The component supply device according to any one of claims 1 to 3, further comprising:
A parts supply device having a cover for pressing the carrier tape against the first sprocket and the second sprocket. The component supply device according to claim 3 , further comprising:
A component supply device comprising a third sprocket that engages with the feed hole of the carrier tape, rotates, and conveys the carrier tape to the first sprocket. The component supply device according to claim 5,
The parts feeding device, wherein the plurality of gears includes a fourth gear coaxial with the third sprocket, and a fifth gear meshing with the first gear and the fourth gear. The component supply device according to claim 6, further comprising:
Having a roller for taking over the cover tape,
The parts feeding device, wherein the plurality of gears includes a sixth gear coaxial with the roller and a seventh gear meshing with the fourth gear and the sixth gear.

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