CN107660118B

CN107660118B - Element feeder

Info

Publication number: CN107660118B
Application number: CN201710606784.6A
Authority: CN
Inventors: 森川俊治; 野野村年弘
Original assignee: Fuji Corp
Current assignee: Fuji Corp
Priority date: 2016-07-26
Filing date: 2017-07-24
Publication date: 2020-09-04
Anticipated expiration: 2037-07-24
Also published as: JP2018018874A; CN107660118A; JP6678082B2

Abstract

The invention provides a component feeder, which improves the practicability of the component feeder that uses banded components to sequentially supply components at a preset supply position. The component feeder is provided with an air blowing mechanism (216) for removing attachments, and compressed air is blown for removing attachments which affect the detection accuracy of the optical sensor (166) to a confirmation mechanism (160) which confirms whether the component (P) is properly conveyed to the component supply unit (SS) by the optical sensor (166). Since the air blowing can remove the adhering matter that affects the detection accuracy of the optical sensor (166), erroneous determination of the optical sensor (166) can be reduced.

Description

Element feeder

Technical Field

The present invention relates to a component feeder for supplying components, and more particularly, to a component feeder for sequentially supplying components to a predetermined supply position using taped components.

Background

Components such as electronic components are obtained as a tape component in which a plurality of the electronic components are held on a carrier tape, and in order to supply components from the tape component, various component feeders as described in the following patent documents, for example, are used.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2007-180280

Patent document 2: japanese laid-open patent publication No. 3-218099

Disclosure of Invention

Problems to be solved by the invention

The component feeder described in the above patent document leaves a large room for improvement, and the practicability of the component feeder can be improved by implementing some improvement. The present invention has been made in view of such circumstances, and an object thereof is to provide a component feeder having high practicability.

Means for solving the problems

In order to solve the above problem, a component feeder according to the present invention intermittently feeds tape components in which a plurality of components are held on a carrier tape at a predetermined pitch, and supplies the components one by one at a component supply unit, the component feeder including: (A) a confirmation mechanism for confirming whether the component is conveyed to the component supply part in a proper state by using an optical sensor; and (B) an air blowing mechanism for removing the attachments, which blows compressed air for removing the attachments that affect the detection accuracy of the optical sensor.

Effects of the invention

The optical sensor is configured to include: a light source that irradiates light; and a detection unit that detects the light, wherein the confirmation unit is configured to confirm whether or not the component is conveyed to the component supply unit in an appropriate state, for example, based on whether or not the optical sensor receives the light irradiated from the light source through the detection unit. Therefore, if there is an adhering substance in the light source and the detection unit of the optical sensor, the light may not be detected by mistake, and it may be determined by mistake whether or not the component is conveyed to the component supply unit in an appropriate state. Since the component feeder according to the present invention can remove the attached matter that affects the detection accuracy of the optical sensor by blowing air, such erroneous determination can be reduced.

Drawings

Fig. 1 is a perspective view showing a component mounter on which a component feeder according to an embodiment of the present invention is mounted.

Fig. 2 is a perspective view showing the mounting head and the head moving device of the component mounting apparatus from a viewpoint opposite to that of fig. 1.

Fig. 3 is a diagram showing a chuck device provided in the mounting head.

Fig. 4 is a diagram showing a state in which a component holding a lead is mounted on a substrate by a chuck provided in a chuck device.

Fig. 5 is a diagram showing a taped component processed by the component feeder.

Fig. 6 is a perspective view showing the whole of the component feeder.

Fig. 7 is a perspective view showing a position where a component is supplied in the component feeder.

Fig. 8 is a perspective view showing a substantially entire internal structure of the component feeder.

Fig. 9 is a view showing a part of the conveying mechanism of the component feeder and a conveying confirming mechanism for confirming the conveying amount by the conveying mechanism in a certain state.

Fig. 10 is a view showing a part of the conveying mechanism of the component feeder and a conveying confirming mechanism for confirming the conveying amount by the conveying mechanism in a state different from that of fig. 9.

Fig. 11 is a perspective view showing a positioning mechanism provided in the component feeder.

Fig. 12 is a sectional view of a jig constituting the positioning mechanism.

Fig. 13 is a perspective view and a schematic side view showing a state in which the lead wire of the component is positioned by the positioning mechanism at the supply position.

Fig. 14 is a perspective view showing a state where the element in which the lead wire is bent is positioned, and a schematic plan view showing a state where the lead wire is guided to a predetermined position by the guide portion.

Fig. 15 is a perspective view showing a blowing mechanism provided in the component feeder.

Fig. 16 is an enlarged perspective view of the attached matter removing air blowing means (tape removing air blowing means).

Description of the reference numerals

10: the component mounting machine 20: the mounting head 26: the component feeder 36: the chuck device 38: the chuck 60: guide groove 62: guide rail 70: the conveying mechanism 108: the positioning mechanism 110: the clamp 138: lead cutting mechanism 140: 142: blade 143: tape cutting mechanism 144: the chute 156: the positioning mechanism 160: clip closed position confirmation mechanism 166: jig confirmation sensor [ optical sensor ] 170: conveyance confirmation mechanism 176: conveyance confirmation sensor [ optical sensor ] 200: ribbon discharge air blowing mechanism 202: the air blowing device 204: the pipe 210: nozzle 212: opening (for removing attached matter) 214: opening (tape removing) 216: attached matter removal air blowing mechanism 220: air blowing mechanism for belt removal

P: element Le: a lead TP: banding element CT: carrying a tape FH: delivery orifice p 1: arrangement pitch p 2: hole pitch p 3: the conveying distance SS: component supply unit

Detailed Description

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings as a mode for carrying out the present invention. The present invention is not limited to the following embodiments, and can be implemented in various ways with various modifications and improvements based on knowledge of those skilled in the art.

[ examples ]

[A] Component mounting machine with component feeder

As shown in fig. 1, a component mounter 10 on which a component feeder according to an embodiment is mounted includes: a main body 12; a substrate conveying and fixing device 14 for conveying and fixing the substrate S; a component supply device 16 for supplying components such as electronic components; two

mounting heads

18, 20 for holding the components supplied from the component supply device 16 and mounting them on the substrate S fixed by the substrate conveyance fixing device 14; and a head moving device 22 for moving the

mounting heads

18 and 20 along a single plane between the component supply device 16 and the substrate transfer/fixing device 14. Incidentally, the head transfer device 22 is an XY robot type transfer device, and moves the

mounting heads

18 and 20 in the x direction and the y direction shown in the drawing.

The component supply device 16 includes: a tray-type component feeder 24 that feeds components arranged on a tray; and a feeder-type component supply device 26 for supplying components from the taped components. In the drawing, only one feeder type element supply device 26 is provided, but a plurality of feeder type element supply devices 26 may be arranged in a row. As will be described in detail later, feeder-type component supply device 26 shown in the drawings is a component feeder of an embodiment, and will be referred to as component feeder 26 hereinafter. Component feeder 26 is for supplying a component having a plurality of leads, i.e., a component with leads, as will be described in detail later.

As shown in fig. 2, the

mounting heads

18 and 20 are mounted to a single slider 28 via

head lifting devices

30 and 32 that respectively lift and lower the same, and the slider 28 is moved by the head moving device 22, whereby the

mounting heads

18 and 20 are integrally moved along a single plane. On the other hand, the

mounting heads

18, 20 are independently lifted and lowered by the head lifting and lowering

devices

30, 32. That is, the head lifting and lowering

devices

30 and 32 move the

mounting heads

18 and 20 in the vertical direction (the z direction shown in fig. 1), respectively.

The mounting head 18 is mainly used for placing a component supplied from the tray-type component supply device 24 on the surface of a substrate, and has a suction nozzle 34 as a component holding means for sucking and holding the component by negative pressure at the lower part. On the other hand, the mounting head 20 is mainly used for inserting a plurality of leads of a component supplied from the component feeder 26 into holes provided in a substrate, and a chuck device 36 shown in fig. 3 is provided at a lower portion. Incidentally, fig. 3(a) is a view of the chucking device 36 as viewed from the y direction shown in fig. 1, and fig. 3(b) is a view of the chucking device 36 as viewed from the x direction.

The chuck device 36 includes a chuck 38 and a chuck driving device 40, and the chuck 38 includes a fixed claw 42 and opening/

closing claws

44 and 46 provided on both sides of the fixed claw 42. The chuck driving device 40 swings the chuck 38 in the direction indicated by the hollow arrow in fig. 3(a), while omitting detailed description of the operation. The chuck 38 is configured such that the opening and closing

claws

44 and 46 are closed along with the swing. A component P with a lead wire having two lead wires Le (hereinafter, sometimes simply referred to as "component P") is supplied from the component feeder 26, and the chuck 38 is configured to clamp one of the two lead wires Le between the opening/closing claw 44 and the fixed claw 42 and clamp the other of the two lead wires Le between the opening/closing claw 46 and the fixed claw 42 in a closed state, as shown in fig. 3 (b). As shown in fig. 4, the component P held by the chuck 38 is mounted on the substrate S such that the lead Le thereof is inserted into the hole H provided in the substrate S.

[B] Taped component processed by component feeder

The tape component handled by the component feeder 26 is, for example, as shown in fig. 5 a, one in which a component P such as an electronic component is held on a carrier tape CT at a predetermined arrangement pitch P1, and in the tape component TP shown in fig. 5 a, a plurality of leads Le (specifically, two leads Le) included in the component P with leads such as an electrolytic capacitor are held on the carrier tape CT. The element P is an element in which two leads Le extend in parallel in the same direction, and can be referred to as an element with radial leads. The carrier tape CT is composed of a main tape CT1 made of thick paper and an adhesive attachment tape CT2 attached to the main tape CT1, and a lead Le is held so as to be sandwiched between the main tape CT1 and the attachment tape CT 2.

The carrier tape CT is provided with feed holes FH penetrating at a predetermined hole pitch p 2. The hole pitch P2 is set to be equal to the arrangement pitch P1 of the components P, and each of the feed holes FH is provided in the middle of the components P in the longitudinal direction of the carrier tape CT. These feeding holes FH are used for feeding the component feeder 26 with the tape component TP. In addition, in component feeder 26, tape component TP is conveyed in a predetermined conveying direction, i.e., the Y direction shown in the drawing.

[C] Element feeder

i) Summary of component feeders

As shown in fig. 6, component feeder 26 according to the embodiment is arranged in component supply device 16 of component mounter 10 in a state where a magazine holder 52 holding component storage magazine 50 storing component tape TPs is mounted, a tape guide 54 guiding component tape TP in component storage magazine 50 held by magazine holder 52 to component feeder 26, a waste tape collection magazine 56 storing cut carrier tape CT (described later), and the like.

A guide groove 60 extending in the longitudinal direction is provided in the upper portion of the component feeder 26, and the component TP guided by the tape guide 54 is intermittently conveyed in the longitudinal direction of the component feeder 26 from the rear end side toward the front end side at a predetermined conveyance pitch p3 each time through the guide groove 60. That is, the Y direction shown in the drawing is set as the conveyance direction. In the following description, the direction of component feeder 26 will be referred to as the right in fig. 6 as the front, the left as the rear, and the left and the right as the left and the right when viewed in the transport direction of tape component TP.

In the drawing, the position where component P existing on the frontmost side is located is component supply section SS set in component feeder 26, and component P is supplied from component supply section SS. That is, the component P located in the component supply section SS is held by the mounting head 20 provided with the chuck device 36 described above, and is mounted on the substrate S. Incidentally, fig. 7 shows a portion where the component supply section SS exists from a viewpoint obliquely right upward.

ii) a conveying mechanism

Referring to fig. 8 showing a state where the exterior cover is removed, the tape member TP is held by the guide rail 62 provided in the guide groove 60. The guide rail 62 has a portion in which the lower portion is bent in a U shape to the left and the upper portion is bent to the right to form a flange. In the drawing, the tape component TP is not shown, but the tape component TP is held on the left side of the guide rail 62 in a state where the tape component TP is accommodated in a U-shaped portion at the lower portion. The component feeder 26 includes a conveying mechanism 70 for conveying the tape component TP in this state forward.

The conveyance mechanism 70 includes: a first slider 72 supported by the feeder main body so as to be movable in the front-rear direction; a double-acting cylinder 74 as an actuator for reciprocating the first slider 72 in the front-rear direction; a second slider 76 supported by the feeder main body and reciprocating in the front-rear direction in accordance with the movement of the first slider 72; a support bar 78 that moves integrally with the second slider 76; and a transport hand 84 and a transport hand 86 rotatably supported by the support rod 78 via the bracket 80 and the bracket 82.

When the first slider 72 is moved forward by the air cylinder 74, the second slider 76 is moved forward in a state of abutting against the first slider 72 by a spring 88 which is a tension coil spring that is stretched between the feeder main body and the second slider 76 (strictly, the support rod 78). Stopper 90 is attached to the feeder main body, and when the feeder main body moves a certain distance, second slider 76 is locked to stopper 90 and stops moving forward. In this state, only the first slider 72 is allowed to move toward the front. When the first slider 72 is returned rearward by the air cylinder 74, the first slider 72 abuts against the second slider 76 locked to the stopper 90 at a certain position, and thereafter, the second slider 76 moves rearward together with the first slider 72.

A base end portion of the transport hand 84 is rotatably supported by a bracket 80 fixed to the support rod 78, a base end portion of the transport hand 86 is rotatably supported by a bracket 82 fixed to the support rod 78, and the transport hand 84 and the transport hand 86 are rotatable in a horizontal plane. The top ends of the

transport claws

84 and 86 face to the left. A spring 92 as a compression coil spring is disposed between each of the

brackets

80, 82 and each of the

conveyance claws

84, 86, and each of the

conveyance claws

84, 86 is biased in a direction in which the tip end faces leftward.

Between the guide rail 62 and the support rod 78, an engagement plate 94 is disposed in a posture extending in the front-rear direction. In the state shown in the drawing, that is, in the state where the support rod 78 is positioned rearward, in other words, in the case where the second slider 76 is positioned at the rear end of the movement range, the tip ends of the respective conveying

claws

84, 86 are brought into contact with the locking plate 94 by the urging force of the spring 92.

Referring to fig. 9(a) and 10(a) showing the portion where the conveyance claw 84 is arranged in an enlarged manner, in a state where the support rod 78 is positioned rearward, as shown in fig. 9(a), the tip of the conveyance claw 84 abuts against the locking plate 94. On the other hand, when the second slider 76 moves forward and the support rod 78 moves forward, the transport claws 84 also move forward, and as shown in fig. 10(a), the distal ends of the transport claws 84 protrude from the ends of the locking plates 94, and the transport claws 84 are rotated to positions exposed from the openings of the guide rails 62 by the biasing force of the springs 92. Although not shown, the transport claws 86 are similarly operated by the forward movement of the support rod 78, and the distal ends of the transport claws 86 protrude from the elongated holes provided in the locking plate 94, so that the transport claws 86 are rotated to positions exposed from the openings of the guide rail 62 by the biasing force of the springs 92.

The distance between the tip of the transport claw 84 and the tip of the transport claw 86 is set to an integral multiple (p2 × n) of the hole pitch p2 of the transport holes FH provided in the tape component TP, and when the locking by the locking plate 94 is released, the tips of the transport claw 84 and the transport claw 86 are simultaneously inserted into the different transport holes FH. By further advancing the support plate 78 after insertion, the belting members TP are conveyed by that amount of advancement. This further advance is adjusted to an amount equal to the hole pitch p 2.

As can be seen from fig. 9(a) and 10(a) and fig. 9(b) and 10(b) (the conveyance claw 84 is omitted) shown from the upper side, the non-return claw 96 is rotatably disposed on the side of the guide rail 62 opposite to the conveyance claw 84 and the conveyance claw 86, i.e., on the left side of the banding device TP. When the front side is referred to as the downstream side in the transport direction of the tape component TP and the rear side is referred to as the upstream side in the transport direction of the tape component TP, the check pawl 96 is provided on the downstream side of the transport pawl 84. The check pawl 96 is urged in the right direction by the force of a spring 98 as a compression coil spring, and when the tape threading member TP is conveyed by the above-described amount of advance, the check pawl 96 is inserted into the conveying hole FH. In the case where the check claw 96 is inserted into the conveying hole FH, the displacement of the banding member TP to the upstream side is prohibited. Further, the upstream side surface of the tip of the check claw 96 is formed as an inclined surface, and even when the tape forming element TP is conveyed to the downstream side in a state of being inserted into the conveying hole FH, the force of the conveyance overcomes the urging force of the spring 98, and the tape forming element TP is separated from the conveying hole FH.

In a state where the check claw 96 is inserted into the conveying hole FH, the first slider 72 is retracted, and the conveying claw 84 and the conveying claw 86 are also retracted while the tape forming element TP maintains its position. As is apparent from the above-described operation, the transport mechanism 70 is configured to engage the

transport claws

84 and 86 with the transport holes FH, transport the tape elements TP in the transport direction by moving the

transport claws

84 and 86, and transport the tape elements TP toward the downstream side at the transport pitch p3 equal to the hole pitch p2 and the arrangement pitch p1 by one forward and backward movement of the air cylinder 74.

iii) positioning mechanism and lead cutting mechanism

As shown in fig. 7 and 8, component feeder 26 has a mechanism for positioning component P in component supply section SS, and more specifically, as shown in fig. 11, has a positioning mechanism 108 for determining the position of each of two leads Le in the feeding direction of component P. The positioning mechanism 108 is combined with a mechanism for cutting off the excess portions of the two leads Le of the component P located in the component supply section SS.

As described in detail with reference to fig. 7, 8, 11, and 12, the positioning mechanism 108 is roughly configured to include, as a main component, a jig 110 that opens and closes a first member and a second member that are two members that move relative to each other. Specifically, jig 110 includes a fixed block 112 fixed to the feeder main body and a rod 114 swingably held by the feeder main body. Incidentally, the rod 114 functions as one of the first member and the second member, and the fixed block 112 functions as the other of the first member and the second member.

The lever 114 is composed of a main lever 116 whose upper end portion is branched into two parts and a sub lever 118 which crosses the main lever 116 by the branched parts, and can swing around a common shaft 120. As can be seen from fig. 12(a), the upper end portion of the primary lever 116 is biased rightward by the biasing force of the spring 122, which is a compression coil spring, and the lower end portion of the secondary lever 118 is biased rightward by the biasing force of the spring 124, which is a compression coil spring.

A blade 126 is attached to the upper end of the primary lever 116, and a clamping plate 128 is attached to the upper end of the secondary lever 118. A roller 130 is attached to a lower end portion of the main lever 116, and as shown in fig. 8, the roller 130 functions as a cam follower, and engages with a cam surface 132 provided at a distal end portion of the first slider 72 when the first slider 72 moves forward.

The biasing force of the spring 122 is larger than the biasing force of the spring 124, and in the state shown in fig. 12(a), the sub-lever 118 abuts against the back surface of the blade 126 and the upper ends of the main lever 116 and the sub-lever 118 are positioned on the right, that is, the clamp 110 is opened. In this state, the blade 126 and the holding plate 128 are both separated from the fixed block 112.

When the first slider 72 advances, the upper end of the main lever 116 swings in the direction toward the left, and along with this, the sub lever 118 also swings in the same direction. When the main lever 116 and the sub lever 118 swing to some extent, as shown in fig. 12(b), the swing of the sub lever 118 is stopped in a state where the lead Le of the component P is held between the holding surface 134 provided on the fixed block 112 and the holding surface 136 provided on the holding plate 128. The portion of the fixed block 112 provided with the clamping surface 134 and the portion of the clamping plate 128 provided with the clamping surface 136 function as clamping portions, respectively, by which the lead Le of the component P is clamped. In this state, the lead Le is held by the force caused by the urging force of the spring 124.

When the main lever 116 swings, the lead Le is cut by the tip of the blade 126 and the lower end of the holding surface 134 of the fixed block 112 as shown in fig. 12 (c). The distal end of the blade 126 and the lower end of the clamping surface 134 of the fixed block 112 function as a pair of blades provided on the first member and the second member, respectively, and the lead Le is cut by the pair of blades on the distal end side (lower end side) of the portion clamped by the clamping portion. That is, component feeder 26 includes lead cutting mechanism 138 configured to include the pair of blades and cut lead Le by opening and closing the jig at component supply section SS.

The component having the component supply unit SS cut the lead Le is held by the chuck device 36 of the mounting head 20 described above in a state where the lead Le is held by the jig 110, and after the jig 110 is opened, the component is moved by the mounting head 20 and mounted on the substrate S. The opening operation of the clamp 110 is performed by the biasing force of the

springs

122 and 124 by retracting the first slider 72. The operation between the open position shown in fig. 12(a) and the closed position shown in fig. 12(b), that is, the opening and closing operation of the jig 110 is performed in association with the forward and backward movement of the first slider 72, and is thus linked with the operation of the transport mechanism 70 described above.

As shown in fig. 11, a blade 140 and a blade 142 for cutting the carrier tape CT are provided on the front end surface of the fixed block 112 and the front end surface of the main lever 116, respectively, and a part of the carrier tape CT remaining after the component P has been supplied is cut by opening and closing the jig 110. That is, the component feeder 26 includes a tape cutting mechanism 143, and the tape cutting mechanism 143 cuts the portion of the carrier tape CT from which the components P are removed by the

blade

140 or 142 in units of the pitch P2. A part of the cut carrier tape CT is collected in the waste tape collection box 56 through the chute 144 (see fig. 6).

In the present positioning mechanism 108, it is important that the two leads Le of the component P are positioned at appropriate positions in the transport direction of the tape component TP. Therefore, the guide portion 150 is provided on the upper end of the rod 114, which is one of the first member and the second member, more specifically, on the holding plate 128 attached to the upper end of the sub-rod 118.

The clamping plate 128 has a sheet-like tab portion 152 protruding from the clamping surface 136. The protruding piece portion 152 is formed with two V-shaped

notches

154, 154 corresponding to the two leads Le and opening toward the fixed block 112, which is the other of the first member and the second member, when the clip 110 is in the closed position. When the jig 110 is closed, the projecting piece 152 moves so as to cover the fixed block 112, and the two lead wires Le are guided to predetermined positions, i.e., positions to be the bottom portions of the V-shaped

notches

154, 154 by the V-shaped

notches

154, 154. In this way, the guide portion 150 is configured to include a plurality of V-notches 154 corresponding to the number of leads Le of the component P.

The number and diameter of the leads Le, the positions of the leads Le, the intervals between the leads Le, and the like are different depending on the type of the component P, and the number, shape, interval, and the like of the V-shaped notches 154 need to be changed depending on the component P to be supplied. For example, it is also contemplated to employ a positioning mechanism as follows: the positioning mechanism 156 shown in fig. 13 a, that is, the main body portion (clamping portion) of the clamping plate 128 described above is integrated with the sub-lever 118, and only the thin guide plate 158 (guide portion) constituting the projecting piece portion 152 described above is replaced in accordance with the element P. Fig. 13(a) shows a state in which the lead Le of the component P is normally held, but in the case of such a configuration, there is a possibility that a problem may occur as shown in fig. 13(b) and schematically in fig. 13(c) from a side view. Specifically, it is expected that any lead Le is not located at an appropriate position, that is, any lead Le is not received in the opening of the corresponding V-shaped notch 154, due to an improper feeding amount of the tape component TP by the feeding mechanism 70 or a bending of any lead Le. In this case, when the clip 110 is closed, the lead Le comes into contact with a portion of the guide plate 158 where the V-shaped notch 154 is not formed, the guide plate 158 is deformed to bend the lead Le and the distal end portion thereof is lifted, and the clip 110 may reach an appropriate closed position. Incidentally, in the case where the diameter of the lead Le is small, the possibility is particularly high.

To avoid such a situation, in the component feeder 26, the holding plate 128 is manufactured in a state in which the main body portion of the holding plate 128 is integrated with the projecting piece 152, and specifically, the main body portion and the projecting piece 152 are formed of one member, and replacement is performed in units of the holding plate 128 according to the components P. With such a configuration, that is, with the configuration in which the rigidity of the projecting piece portion 152 is relatively high, in the present component feeder 26, when the lead Le is not located at the proper position, the jig 110 cannot be closed to such an extent that the closed position of the jig 110 becomes the proper position. Thus, whether the position of the lead Le is in the proper position can be easily confirmed by confirming whether the closed position of the jig 110 is in the proper position.

iv) clip closed position confirmation mechanism

From the above-described viewpoint, component feeder 26 includes jig closed position confirmation means 160 for confirming whether or not the closed position of jig 110, that is, the operating position in the state where jig 110 is closed, is in an appropriate position when lead Le of component P is gripped by jig 110 at component supply unit SS.

Specifically, as shown in fig. 11, the grip plate 128 is provided with an extension portion 162 extending forward from the sub-rod 118, a hole 164 to be detected is formed through the extension portion 162, the hole 164 to be detected is detected by a light reflection type sensor 166 disposed below the hole 164 to be detected, and whether or not the closed position of the clip 110 is in an appropriate position can be confirmed based on whether or not the hole 164 to be detected is detected by the sensor 166. That is, the component feeder 26 includes a detection target hole 164 as a detection target portion provided in a guide portion which is a part of the grip plate 128, and a sensor 166 as a detection target, and the jig closed position confirmation mechanism 160 is configured.

More specifically, the sensor 166 is configured to emit light upward from the upper surface and to receive reflected light from the upper surface. Also, the state where the clip 110 is sufficiently closed is a state where the closed position of the clip 110 is in place, and in this state, light from the sensor 166 is reflected by a portion where the detection hole 164 is not present, and the light is detected by the sensor 166. At this time, the detected hole 164 is not detected, and it is determined that the closed position of the clamp 110 is in the proper position. On the other hand, in a state where the closed position of the clip 110 is not in place, that is, in a state where the clip 110 is not completely closed, the light from the sensor 166 passes through the detected hole 164, and the light is not detected by the sensor 166. At this time, the detected hole 164 is detected, and it is determined that the closed position of the clamp 110 is not in the proper position. If it is determined that the closed position of jig 110 is not in the proper position, the operation of component feeder 26 and the operation of component mounter 10 are stopped.

Here, as a specific case, for example, a case where the lead Le is bent and the element P is inclined is considered. In this case, as shown in fig. 14(a), two lead wires Le are expected to be guided toward one V-shaped notch 154. In this case, as the abnormal jig, as shown in fig. 14(c), the closed position of the jig 110 is not in the proper position when the jig 110 is closed. Fig. 14(b) shows a normal clamping state, and it is clear that in the state shown in fig. 14(c), two leads Le overlap, and thus the clamp 110 cannot be completely closed. The component feeder 26 can also detect a state in which a plurality of leads Le are guided to one V-groove opening 154 (hereinafter, sometimes referred to as a "lead overlap state") by using the detection hole 164 provided in the grip plate 128 as a detection target.

However, the appropriate closed position of the jig 110 differs depending on the diameter of the lead Le, and consideration is required to confirm whether the closed position of the jig 110 is an appropriate position. Specifically, in the case of the lead Le having a smaller diameter than the lead Le shown in fig. 14(b) and 14(c), the appropriate closing position of the clamp 110 is different as shown in fig. 14(d) and 14 (e). In an extreme case, when the clamping plates 128 shown in fig. 14(b) and 14(c) are used for the elements P of the lead Le shown in fig. 14(d) and 14(e), it may be determined that the element P is in the normally clamped state even in the abnormally clamped state.

As described above, in the component feeder 26, the holding plate 128 provided with the guide 150 is replaced according to the component P to be processed. In addition, a detection target hole 164 as a detection target portion is provided in the holding plate 128, that is, the guide portion 150, and in any of the holding plates 128, that is, in any of the guide portions 150, the detection target hole 164 is provided at a position corresponding to the diameter of the lead Le of the element corresponding to the detection target hole 164. By replacing the clamp plate 128, the trouble of adjusting the position of the sensor 166 according to the component P can be eliminated.

In view of the function of the gripper closed position confirmation mechanism 160 described above, the gripper closed position confirmation mechanism 160 functions as a confirmation mechanism for confirming whether or not the component P is properly conveyed to the component supply section SS by the sensor 166 (hereinafter, sometimes referred to as "gripper confirmation sensor 166") which is an optical sensor.

v) transport confirmation mechanism

In the component supply section SS, in order to position the component P, more specifically, the lead Le of the component P at a predetermined position by the positioning mechanism 108, it is assumed that the transfer amount of the taped component TP by the transfer mechanism 70 is appropriate, that is, the transfer pitch P3 is accurately transferred. In view of this, the component feeder 26 includes a conveyance checking mechanism for checking whether or not the tape component TP is conveyed by the conveying mechanism 70 by the conveying pitch p 3.

As shown in fig. 8, the conveyance checking mechanism 170 is provided between the conveying mechanism 70 and the positioning mechanism 108 in the conveying direction. That is, the positioning mechanism 108 is provided downstream of the conveying mechanism 70. Also described in detail with reference to fig. 9 and 10, the conveyance checking mechanism 170 includes a pin 172 inserted into a conveyance hole FH of the carrier tape CT inserted into the tape component TP, a pin inserting mechanism 174 for inserting the pin 172 into the conveyance hole FH, and a sensor 176 for detecting whether or not the pin 172 is inserted into the conveyance hole FH by the pin inserting mechanism 174.

Specifically, the pin 172 is held by a swing lever 178 as a movable body. As can be seen from fig. 9(c) and 10(c) shown centering on the swing lever 178 and the pin 172, a shaft (not shown) is inserted into the shaft hole 180, and is held by the feeder main body so as to be swingable around the central axis of the shaft hole 180. The swing lever 178 is biased leftward by a spring 182 serving as a compression coil spring. On the other hand, the roller 184 is disposed on the support rod 78 described above, and in a state where the support rod 78 is retracted, the roller 184 abuts against the vertical wall 186 of the rocking lever 178 from the left side as shown in fig. 9. Therefore, the pin 172 is displaced rightward of the guide rail 62, i.e., retreated to a position not to hinder the conveyance of the tape element TP.

When the support rod 78 is moved forward, that is, when the tape component TP is conveyed by the conveying mechanism 70, as shown in fig. 10, the roller 184 moves forward to a position where it does not engage with the vertical wall portion 186, and the swing rod 178 is displaced leftward by the biasing force of the spring 182. Since the pin 172 is located at a position forward of the position of the check claw 96 by the transport pitch p3 (equal to the hole pitch p2 of the transport hole FH), when the transfer mechanism 70 correctly transports the tape component TP by the transport pitch p3, the pin 172 is displaced leftward and inserted into the transport hole FH. That is, the pin insertion mechanism 174 is configured to include the roller 184, the swing lever 178, and the like. As mentioned above, the support rod 78 is retracted, so that the roller 184 engages with the vertical wall 186, and the state shown in fig. 9 is returned.

The rocking lever 178 is provided with a detection target piece 188, and the detection target piece 188 is also moved leftward by the displacement of the pin 172 leftward, that is, the insertion of the pin 172 into the feed hole FH. The sensor 176 detects the movement of the detected piece 188. The sensor 176 is of a type in which a light source and a detection unit that detects light from the light source face each other, and blocks light from the light source to the detection unit when the pin 172 is properly inserted into the conveyance hole FH, and determines that the pin 172 is inserted into the conveyance hole FH due to the blocking of the light. Incidentally, when the conveyance amount does not reach the conveyance pitch p3, the pins 172 abut on the positions of the carrier tape CT where the conveyance holes FH are not present, and the pins 172 are prevented from moving leftward. In this case, the detection target piece 188 does not block the light from the light source toward the detection unit, and thus it is determined that the pin 172 is not inserted into the conveyance hole FH. In this case, the component feeder 26 and the component mounter 10 are stopped in response to the determination that the feeding amount is not appropriate.

As is apparent from the above description, the operation of the conveyance checking mechanism 170, specifically, the operation of the pin insertion mechanism 174 is an operation corresponding to the movement of the support rod 78, and is interlocked with the conveyance operation of the conveyance mechanism 70. Even when the conveying amount by the conveying mechanism 70 is slightly deviated from the conveying pitch p3, the tip of the pin 172 is pointed, and the deviation is eliminated by inserting the pin 172 into the conveying hole FH.

As a cause that the conveyance amount does not become the conveyance pitch p3, for example, a case where the carrier tape CT is cut as shown in fig. 5(c) at the terminal end of the tape component TP is considered. In the structure of the conveying mechanism 70, the conveying amount is appropriate when the center of the conveying hole FH is cut off as shown in fig. 5(b), but the conveying amount is decreased or increased when the center of the conveying hole FH is cut off at a position deviated from the conveying hole FH as shown in fig. 5 (c). The conveyance checking unit 170 can check that the conveyance amount is not appropriate due to this reason.

In view of the above-described function of the conveyance checking mechanism 170, it is considered that the conveyance checking mechanism 170 can also function as a checking mechanism for checking whether or not the component P is conveyed to the component supply unit SS in an appropriate state by the sensor 176 (hereinafter, sometimes referred to as "conveyance checking sensor 176") which is an optical sensor.

vi) blowing mechanism for tape discharge

As shown in fig. 15, in order to facilitate the movement of the carrier tape CT cut out in the chute 144, the component feeder 26 includes a tape discharge blowing mechanism 200 that introduces compressed air into the chute 144. The tape discharge blowing mechanism 200 includes a compressed air source, not shown, and a blowing device 202 for discharging compressed air supplied from the compressed air source. The air blowing device 202 is fixed to an upper end of a duct 204 forming the chute 144, and discharges compressed air downward from a nozzle (not shown) provided at a lower end thereof. Then, the cut carrier tape CT is conveyed toward the scrap tape collection box 56 by the compressed air discharged from the air blowing device 202. The compressed air is intermittently discharged by the air blowing device 202 at a timing when the carrier tape CT is cut by the tape cutting mechanism 143.

vii) blowing mechanism for removing attached matter

In addition, the air blowing device 202 also has a nozzle 210 extending toward the rear. The nozzle 210 has a tip end adjacent to the jig confirmation sensor 166, and has two openings 212 and 214 (see fig. 16) for discharging compressed air at the tip end. And, the compressed air discharged from one of the openings 212 comes into contact with the upper surface of the jig confirmation sensor 166. Since the jig confirmation sensor 166 is configured to irradiate light from the upper surface and receive reflected light, when dust or paper dust is accumulated on the upper surface, the opening and closing of the jig 110 may not be normally confirmed. According to this component feeder 26, since the compressed air discharged from the nozzle 210 of the air blowing device 202 is blown onto the upper surface of the jig confirmation sensor 166, it is possible to remove the attached matter such as dust and paper dust on the upper surface of the jig confirmation sensor 166, and it is possible to reduce erroneous determination by the jig confirmation sensor 166.

That is, the component feeder 26 includes an attached matter removing air blowing mechanism 216 for blowing compressed air to remove attached matter that affects the detection accuracy of the jig checking sensor 166 as an optical sensor. The compressed air source of the deposit removing air blowing mechanism 216 is common to the compressed air source of the tape discharging air blowing mechanism 200, and the discharge of the compressed air from the nozzle 210 and the discharge of the compressed air from the nozzle of the tape discharging air blowing mechanism 200 are performed intermittently at the timing of cutting the carrier tape CT by the tape cutting mechanism 143 in synchronization with each other.

Since the adhesive tape CT2 is used as the carrier tape CT, the paper powder generated by cutting the carrier tape CT may have adhesiveness. Even if such adhesive paper dust adheres to jig confirmation sensor 166, since nozzle 210 extends to a position close to jig confirmation sensor 166 and blows compressed air to jig confirmation sensor 166 from the close position, the adhesive paper dust can be reliably removed.

viii) blowing mechanism for removing tape

For example, when a part of the carrier tape CT is cut by the tape cutting mechanism 143, the adhesive tape CT2 may curl and adhere to the

blades

140 and 142 of the tape cutting mechanism 143. To cope with this, the component feeder 26 includes a tape removing air blowing mechanism 220 for blowing compressed air to prevent the cut carrier tape CT from adhering to the

blades

140 and 142 of the tape cutting mechanism 143.

The compressed air from the other opening 214 of the nozzle 210 passes over the upper surface of the jig confirmation sensor 166 and is discharged to the front side of the tape cutting mechanism 143. That is, compressed air is blown from the opening 214 of the nozzle 210 to the cut portion of the cut carrier tape CT. The air blowing device 202 can blow off the cut carrier tape CT so as to reliably fall into the chute 144.

As described above, the nozzle 210 constitutes not only the attached matter removal air blowing means 216 described above but also the tape removal air blowing means 220. Further, according to the above-described configuration, in the component feeder 26, the compressed air source of the tape removing air blowing means 220 is also used in common with the compressed air sources of the tape discharging air blowing means 200 and the attached matter removing air blowing means 216, and all of the air blowing by the tape removing air blowing means 220, the air blowing by the attached matter removing air blowing means 216, and the air blowing by the tape discharging air blowing means 200 are performed in synchronization.

The component feeder 26 configured as described above includes both the attached matter removing air blowing means 216 and the tape removing air blowing means 220 by merely adding the nozzle 210 to the air blowing device functioning only as the tape discharging air blowing means. Therefore, the component feeder 26 can reduce the erroneous determination of the jig confirmation sensor 166 as an optical sensor by the attached matter removing air blowing mechanism 216, and can prevent the component mounter from being stopped by the attachment of the cut carrier tape CT remaining by the tape removing air blowing mechanism 220. This component feeder 26 can obtain various effects as described above by simply improving the conventional component feeder, and thus, the utility is increased.

In the component feeder 26, the attached matter removal air blowing mechanism is provided only for the jig confirmation sensor 166, but may be provided for the conveyance confirmation sensor 176. The attached matter removal air blowing means for the conveyance checking sensor 176 may be configured to blow compressed air to at least one of a light source and a detection unit of the conveyance checking sensor 176, for example. That is, the attached matter removing air blowing mechanism can be provided for various optical sensors provided in the component feeder. Further, the air blowing mechanism for removing the deposit can be applied to a component feeder not having the structure with the cutting mechanism described above.

In the component feeder 26 of the present embodiment, the nozzle of the deposit removing air blowing mechanism 216 and the nozzle of the tape removing air blowing mechanism 220 are used in common, but may be provided separately. In the case where the nozzle of the attached matter removal air blowing means 216 and the nozzle of the tape removal air blowing means 220 are configured independently, the air blowing by the attached matter removal air blowing means 216 and the air blowing by the tape removal air blowing means 220 may be performed at different timings without synchronization.

In the component feeder 26 of the present embodiment, the air blowing by the attached matter removing air blowing means 216 and the air blowing by the tape removing air blowing means 220 are performed in synchronization with the air blowing by the tape discharging air blowing means 200, but may be performed at different timings. In the component feeder 26 of the present embodiment, the compressed air source for the tape discharge air blowing mechanism 200, the compressed air source for the deposit removal air blowing mechanism 216, and the compressed air source for the tape removal air blowing mechanism 220 are all common, but the compressed air sources may be provided separately. That is, the tape discharge blowing mechanism is not essential for the deposit removal blowing mechanism and the tape removal blowing mechanism, and the deposit removal blowing mechanism and the tape removal blowing mechanism can be applied to a component feeder having no tape discharge blowing mechanism.

Claims

1. A component feeder intermittently feeds a plurality of taped components held on a carrier tape at a predetermined pitch and feeds the components one by one in a component feeding section,

the component feeder includes:

a confirmation mechanism that confirms whether or not the component is conveyed to the component supply unit in an appropriate state by using an optical sensor;

an attached matter removing air blowing mechanism for blowing compressed air to remove attached matter that affects detection accuracy of the optical sensor;

a tape cutting mechanism that cuts the carrier tape at the portion from which the component is removed by a blade into a length corresponding to the predetermined pitch;

a chute for discharging the cut carrier tape; and

a belt discharge blowing mechanism for introducing compressed air into the chute to promote movement of the carrier belt cut off in the chute,

the component feeder is configured such that a compressed air source of the attachment removal air blowing means and a compressed air source of the tape discharge air blowing means are used in common, and that air blowing by the attachment removal air blowing means and air blowing by the tape discharge air blowing means are performed in synchronization with each other from nozzles provided in the respective air blowing means.

2. The component feeder of claim 1,

the carrier band is made of paper,

the attached matter removing air blowing mechanism is used for removing dust generated from the carrier tape as attached matter.