阅读说明：本技术 供料器 (Feeder ) 是由 大桥广康 于 2017-12-26 设计创作，主要内容包括：供料器在通过沿输送方向进给设有收容元件的收容部和输送用的卡合孔的载带而将收容于收容部的元件向元件供给位置依次供给时,为了使收容于载带的元件的宽度方向位置的精度稳定而具备：供料器主体,设有沿着输送方向延伸的输送路径；带引导件,安装于供料器主体,具有在与输送方向正交的宽度方向上对输送路径上的载带进行引导的引导侧壁；及带齿卷盘,以能够旋转的方式轴支承于供料器主体,设有与输送路径上的载带的卡合孔卡合的卡合突起,使载带沿输送方向进给移动。带齿卷盘配置于从卡合突起到带引导件的引导侧壁为止的分离距离比载带的从卡合孔到侧端为止的宽度方向的尺寸小的带偏靠位置。(When sequentially supplying components accommodated in accommodating portions to a component supply position by feeding a carrier tape provided with accommodating portions for accommodating the components and engaging holes for conveying in a conveying direction, the feeder is provided with: a feeder main body provided with a conveying path extending in a conveying direction; a tape guide attached to the feeder main body and having a guide sidewall for guiding the carrier tape on the transport path in a width direction orthogonal to the transport direction; and a sprocket rotatably supported by the feeder main body, provided with engaging projections for engaging with engaging holes of the carrier tape on the conveying path, and configured to feed and move the carrier tape in the conveying direction. The sprocket is disposed at a tape offset position where a separation distance from the engaging projection to the guide side wall of the tape guide is smaller than a width-direction dimension of the carrier tape from the engaging hole to the side end.)

1. A feeder for sequentially supplying components accommodated in an accommodating portion to a component supply position by feeding a carrier tape in a conveying direction, the carrier tape being provided with the accommodating portion for accommodating the components and a locking hole for conveying,

the feeder is provided with:

a feeder main body provided with a conveying path extending in the conveying direction;

a tape guide attached to the feeder main body and having a guide sidewall for guiding the carrier tape on the transport path in a width direction orthogonal to the transport direction; and

a sprocket rotatably supported by the feeder main body, provided with engaging projections for engaging with the engaging holes of the carrier tape on the transport path, and configured to feed and move the carrier tape in the transport direction,

the sprocket is disposed at a tape offset position where a separation distance from the engaging projection to the guide side wall of the tape guide is smaller than a dimension of the carrier tape in the width direction from the engaging hole to a side end.

2. The feeder of claim 1,

the sprocket includes an upstream sprocket disposed upstream in the transport direction with respect to the component supply position and a downstream sprocket disposed downstream in the transport direction with respect to the component supply position,

at least the upstream-side toothed reel is disposed at the belt biasing position.

3. The feeder of claim 1,

more than two toothed reels are provided to the feeder main body,

at least the sprocket closest to the component supply position is arranged in the tape bias position.

4. The feeder of claim 1,

the carrier tape is provided with a base tape provided with the containing part and a cover tape bonded with the upper surface of the base tape,

the feeder includes a peeling member that peels the cover tape from the base tape at a peeling position on an upstream side in a conveying direction with respect to the component supply position,

the sprocket has an upstream sprocket disposed upstream in the transport direction with respect to the peeling position and a downstream sprocket disposed downstream in the transport direction with respect to the peeling position,

at least one of the upstream sprocket and the downstream sprocket is disposed at the tape bias position.

5. A feeder as claimed in any one of claims 2 to 4,

the sprocket is all disposed in the belt-biased position.

Technical Field

This description relates to feeders.

Background

Conventionally, feeders are known which sequentially supply components to a component supply position in order to transfer the components such as electronic components onto a substrate (see, for example, patent document 1). In the feeder described in patent document 1, the components are accommodated in a plurality of accommodating portions provided at predetermined intervals in the carrier tape. The feeder includes a feeder main body, a tape guide, and a sprocket. The feeder main body is provided with a conveying path extending in a conveying direction of the carrier tape from the tape insertion section toward the tape discharge section. A tape guide for guiding a carrier tape on a transport path is attached to a feeder main body. The tape guide has a guide sidewall for guiding the carrier tape on the transport path in a width direction orthogonal to the transport direction.

Sprocket is rotatably supported by feeder main body. The sprocket is provided with an engaging projection which can be engaged with an engaging hole provided in a carrier tape on the transport path to distinguish the accommodating portion. The sprocket rotates by engaging the engaging projections with the engaging holes of the carrier tape to feed and move the carrier tape in the feeding direction and supply the components to the component supply position.

The feeder described in patent document 1 further includes a throttle unit. The throttle portion gradually narrows a distance between a pair of guide side walls that guide both sides of the carrier tape on the transport path from upstream to downstream. The width of the transport path upstream of the throttle unit, that is, the distance between a pair of guide side walls that guide both sides of the carrier tape on the transport path, is set to be slightly larger than the maximum value of the width of the carrier tape. The width of the transport path in the throttle section, i.e., the distance between the pair of guide side walls, is reduced to about the maximum value of the width of the carrier tape. According to the choke portion, the amount of displacement in the width direction of the carrier tape fed on the transport path can be suppressed to be small, and therefore erroneous detection of the component detection position and the like can be reduced.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2017 and 76688

Disclosure of Invention

Technical problem to be solved by the invention

However, there is a tolerance in the width of the carrier tape itself or the separation distance of the pair of guide side walls. Therefore, even if the throttle portion is provided in the transport path as described above, the distance between the pair of guide side walls becomes slightly larger than the width of the carrier tape due to the tolerance, and a gap may be generated between the carrier tape and the guide side walls. Therefore, even if the throttle portion is provided in the conveying path, the component may be displaced from the feeder by the above-described gap amount when the carrier tape is fed in the conveying direction, and the accuracy of the position in the width direction may become unstable. If the accuracy of the position in the width direction of the component is unstable, the suction accuracy when the suction nozzle sucks the minute component is lowered when the carrier tape accommodating the particularly small component is fed.

The present specification discloses a feeder capable of stabilizing the accuracy of the position in the width direction of a component accommodated in a carrier tape.

The present specification discloses a feeder which sequentially supplies components accommodated in an accommodating portion to a component supply position by feeding a carrier tape provided with the accommodating portion accommodating the components and a clamping hole for conveying in a conveying direction, wherein the feeder comprises: a feeder main body provided with a conveying path extending in the conveying direction; a tape guide attached to the feeder main body and having a guide sidewall for guiding the carrier tape on the transport path in a width direction orthogonal to the transport direction; and a sprocket rotatably supported by the feeder main body, provided with an engaging projection that engages with the engaging hole of the carrier tape on the transport path, and configured to feed and move the carrier tape in the transport direction, wherein the sprocket is disposed at a tape offset position where a separation distance from the engaging projection to the guide sidewall of the tape guide is smaller than a dimension of the carrier tape in the width direction from the engaging hole to a side end.

According to the present disclosure, when the carrier tape is fed along the tape transport path by the rotation of the sprocket, in the process of inserting the engaging projection of the sprocket into the engaging hole of the carrier tape, a force is generated by the engaging projection to move a portion around the engaging hole of the carrier tape in the width direction of the guide side wall side. The amount by which the carrier tape can move in the width direction by this force is larger than the amount that can be moved when the separation distance is equal to the above-described dimension. Therefore, even if there is a tolerance in the width of the carrier tape or the separation distance between the pair of guide side walls of the tape guide, since one side end surface of the carrier tape is reliably brought into contact with and pressed against the guide side wall, the carrier tape is linearly conveyed on the tape conveying path in a state of being brought into contact with the guide side wall by the rotation of the sprocket. Therefore, the accuracy of the position of the component accommodated in the accommodating hole of the carrier tape in the width direction with respect to the feeder main body can be stabilized.

Drawings

Figure 1 is a top view of a component assembly machine including an embodiment of a feeder.

Fig. 2 is a plan view of the carrier tape.

Fig. 3 is a III-III sectional view of the carrier tape shown in fig. 2.

Figure 4 is a perspective view of the side of the feeder of an embodiment.

Figure 5 is an enlarged view of the side face side rear portion of the feeder of the embodiment.

Fig. 6 is an enlarged view of the side rear part in a state where the operation lever is lifted in the feeder according to the embodiment.

Fig. 7 is an enlarged view of the rear part on the side face side in a state where lifting of the operation lever is released and the carrier tape is conveyed in the feeder according to the embodiment.

Figure 8 is a perspective view of the front of the feeder of an embodiment.

Fig. 9 is a diagram showing a relationship between the width of the carrier tape and the arrangement position of the sprocket in the feeder according to the embodiment.

Figure 10 is an X-X cross-sectional view of the feeder shown in figure 9.

Fig. 11 is a perspective view of an engaging projection of a sprocket provided in a feeder according to an embodiment.

Fig. 12 is a diagram showing a positional relationship between component supply position L and a sprocket disposed at a tape bias position in a feeder according to a modification.

Fig. 13 is a diagram showing a positional relationship between a cover tape stripping position and a sprocket disposed at a tape offset position in a modified feeder.

Detailed Description

1. Structure of component assembling machine for loading feeder

The structure of a component mounting machine 1 on which a feeder according to an embodiment is mounted will be described with reference to fig. 1 to 3. The feeder of the present embodiment is applied to a component mounter 1 installed in a substrate production line for mounting components on a substrate. As shown in fig. 1, the component mounting apparatus 1 includes a substrate transfer unit 10, a component supply unit 20, and a component transfer unit 30.

The substrate transfer unit 10 is a device that transfers a substrate 50 such as a circuit substrate to be produced. The substrate conveying unit 10 includes a pair of guide rails 11 and 12, a conveyor (not shown), and a clamping device (not shown). The guide rails 11, 12 are provided on the base. The pair of guide rails 11 and 12 are arranged in parallel with each other with a space therebetween. The guide rails 11, 12 guide the substrate 50. The conveyor belt is a belt member on which the substrate 50 can be placed, and is provided to be rotatable. The conveyor conveys the placed substrate 50 toward the conveying direction X in which the guide rails 11, 12 extend. The substrate 50 is guided by a pair of guide rails 11, 12 and conveyed by a conveyor toward the conveying direction X. The clamping device is disposed so as to position the substrate 50 at a predetermined component mounting position. The substrate 50 is positioned by the clamping device while being conveyed to a predetermined component mounting position by the conveyor.

The component supply unit 20 is a device for supplying the component 60 mounted on the substrate 50 to a predetermined component supply position L. the component 60 may include, for example, a 0201-sized (0.2mm × 0.1.1 mm) micro component, the component supply unit 20 includes a slot 21, a feeder 22, and a reel holding unit 23. the slot 21 is mounted on the base, the slot 21 is disposed in a direction (hereinafter referred to as orthogonal direction) Y orthogonal to the conveying direction X with respect to the substrate conveying unit 10, the slot 21 is a holding unit in which the feeder 22 is detachably mounted, and a plurality of slots 21 are arranged in the conveying direction X.

The reel holding portion 23 can hold the two reels 70 and 71 so as to be replaceable and rotatable, respectively. The reel holding portion 23 has a first holding portion 23a corresponding to the reel 70 and a second holding portion 23b corresponding to the reel 71. The reel holding portion 23 is arranged in the orthogonal direction Y with respect to the feeder 22. The first holding portion 23a and the second holding portion 23b are arranged in the orthogonal direction Y. The tape reel holding portions 23 are provided in a plurality in line in the conveying direction X so as to correspond to the feeders 22 which are the slots 21. The reels 70 and 71 are rotary bodies around which the carrier tape 80 containing the plurality of components 60 is wound.

The carrier tape 80 is a tape member in which a plurality of components 60 are accommodated in a line in the longitudinal direction. Carrier tape 80 has a base tape 81, a base tape 82, and a cover tape 83 as shown in fig. 2 and 3. The base tape 81 is made of a flexible material such as paper or resin. The base tape 81 is provided with a receiving hole 81a therethrough. The housing hole 81a is a hole for housing the component 60. The housing holes 81a are provided at predetermined intervals in the longitudinal direction of the base tape 81.

The base tape 81 is also provided with an engagement hole 81b penetrating therethrough. The engagement hole 81b is a hole for engaging an engagement projection of a sprocket described later. The engaging hole 81b is formed in a substantially circular or elliptical shape. The engagement hole 81b has a size that can engage with an engagement projection of a sprocket described later. The engaging holes 81b are provided at predetermined intervals in the longitudinal direction of the base tape 81.

The housing holes 81a are arranged in a row in the longitudinal direction on one side in the width direction of the base tape 81, and the engaging holes 81b are arranged in a row in the longitudinal direction on the other side in the width direction of the base tape 81. The pitch of the receiving holes 81a in the longitudinal direction of the base tape 81 and the pitch of the engaging holes 81b correspond to each other in advance, and for example, the pitch of the receiving holes 81a is twice the pitch of the engaging holes 81 b.

The base tape 82 is adhered to the lower surface (specifically, the entire surface) of the base tape 81. The base tape 82 has a function of holding the component 60 accommodated in the accommodation hole 81a of the base tape 81 and preventing the component 60 from falling off. The base tape 82 is made of transparent or translucent paper, polymer film, or the like. The cover tape 83 is bonded to the upper surface of the base tape 81 (except for the portions where the engagement holes 81b are provided). The cover tape 83 has a function of blocking the upper portion of the housing hole 81a of the base tape 81 and preventing the component 60 housed in the housing hole 81a from flying out. The cover tape 83 is made of a transparent polymer film or the like.

The feeder 22 is detachably attached to the slot 21, and the feeder 22 feeds the components 60 accommodated in the accommodation holes 81a of the carrier tape 80 to a predetermined component supply position L by feeding the carrier tape 80 wound around the reels 70, 71 held by the reel holding portion 23 in the orthogonal direction Y orthogonal to the conveying direction X of the substrate 50.

The component transfer unit 30 is a device for transferring the components 60 supplied to the predetermined component supply position L from the carrier tape 80 to the board 50 positioned at the predetermined component mounting position, and the component transfer unit 30 includes a Y-axis slider 31, an X-axis slider 32, and a mounting head 33.

The Y-axis slider 31 is supported by the base via the guide rails 34, 35. The guide rails 34 and 35 extend in an orthogonal direction Y orthogonal to the conveyance direction X of the substrate 50 by the substrate conveyance unit 10, and are disposed above the substrate conveyance unit 10. The Y-axis slider 31 is movable along the guide rails 34, 35 in the orthogonal direction Y. A Y-axis servo motor (not shown) is mechanically coupled to the Y-axis slider 31. The Y-axis slider 31 is moved in position in the orthogonal direction Y by a Y-axis servo motor.

The X-axis slider 32 is attached to the Y-axis slider 31 so as to be movable in the conveyance direction X. An X-axis servomotor (not shown) fixed to the Y-axis slider 31 is mechanically coupled to the X-axis slider 32. The X-axis slider 32 is moved in position in the conveying direction X by an X-axis servo motor.

The mounting head 33 is attached to the X-axis slider 32, the mounting head 33 holds a suction nozzle (not shown) capable of sucking the component 60 in an attachable/detachable manner, it should be noted that the mounting head 33 may hold a plurality of suction nozzles, the mounting head 33 is movable in position in the vertical direction Z orthogonal to both the conveying direction X and the orthogonal direction Y, the suction nozzle of the mounting head 33 sucks the component 60 supplied from the component supply unit 20 to the predetermined component supply position L by negative pressure or the like, and the sucked component 60 is mounted on the board 50 positioned at the predetermined component mounting position by releasing the suction.

The X-axis slider 32 is provided with a substrate camera 36. the substrate camera 36 captures an image of a reference mark of the substrate 50 positioned at a predetermined component mounting position from above to acquire substrate position reference information, or captures an image of the component 60 supplied to a predetermined component supply position L from above to acquire component position information, the component position information is used for position control and posture control of the suction nozzle when the component 60 is sucked to the suction nozzle of the mounting head 33, and the substrate position reference information is used for position control and posture control of the suction nozzle when the component 60 sucked to the suction nozzle of the mounting head 33 is mounted to the substrate 50.

A component camera 37 is attached to the base of the component transfer unit 30. The component camera 37 captures an image of the component 60 sucked by the suction nozzle of the mounting head 33 from below, and acquires attitude information and the like of the component 60. This attitude information is used for position control and attitude control of the suction nozzle of the mounting head 33 when mounting the component 60 sucked to the suction nozzle on the substrate 50.

2. Structure of feeder

Next, the structure of feeder 22 will be described with reference to fig. 4 to 11, feeder 22 feeds carrier tape 80 wound around reels 70 and 71 held by reel holding unit 23 in orthogonal direction Y, and supplies components 60 accommodated in carrier tape 80 to predetermined component supply position L, and feeder 22 includes feeder main body 100, tape guide 110, and sprocket 120 as shown in fig. 4.

Feeder body 100 is formed in a flat box shape. Feeder main body 100 has a tape insertion portion 101 and a tape ejection portion 102. The tape insertion portion 101 is an insertion port for inserting the carrier tape 80. Tape insertion section 101 is provided at the rear portion of feeder main body 100 (i.e., at a portion on the opposite side of substrate conveying section 10). The tape discharge unit 102 is a discharge port for discharging the carrier tape 80 to the outside. Tape ejection unit 102 is provided at the front portion of feeder main body 100 (i.e., at a portion on the substrate conveying unit 10 side).

A tape transport path 111 is provided in feeder main body 100. The tape conveying path 111 is a rail extending in the conveying direction of the carrier tape 80 between the tape insertion section 101 and the tape discharge section 102. When the feeder 22 is attached to the slot 21 of the component supply unit 20, the transport direction of the carrier tape 80 coincides with the orthogonal direction Y orthogonal to the transport direction X of the substrate 50.

The belt conveyance path 111 supports the lower surface of the carrier belt 80 being conveyed and guides the carrier belt 80 being conveyed. The belt transport path 111 is formed to have a path width equal to or slightly larger than a dimension of the carrier tape 80 in the width direction orthogonal to the longitudinal direction. The belt conveying path 111 is inclined so as to gradually increase in height from the rear toward the front. The foremost part of the belt conveying path 111 is formed horizontally.

A tape guide 110 is provided in the feeder body 100. The tape guide 110 is a member that guides the carrier tape 80 conveyed on the tape conveying path 111 between the tape insertion portion 101 and the tape discharge portion 102. The tape guide 110 is disposed above a front sprocket 122 described later. The tape guide 110 is formed so that its cross-sectional shape is an inverted U-shape that opens downward. Tape guide 110 may be separately attached to feeder main body 100, or may be integrally provided to feeder main body 100.

The tape guide 110 has a pair of guide sidewalls 112, 113. The guide side walls 112 and 113 extend in the orthogonal direction Y, which is the transport direction of the carrier tape 80, between the tape insertion section 101 and the tape discharge section 102. The guide sidewalls 112 and 113 are sidewalls that regulate movement of the carrier tape 80 (specifically, the carrier tape 80 engaged with the front-side toothed reel 122) on the tape transport path 111 in the width direction and guide the carrier tape 80 being transported in the width direction.

The guide side wall 112 is a side wall facing the side surface on which the engaging holes 81b are disposed on both side surfaces in the width direction of the carrier tape 80 on the tape conveying path 111. The guide side wall 113 is a side wall facing the side surface on which the housing hole 81a is disposed, of both side surfaces in the width direction of the carrier tape 80 on the tape transport path 111. The guide side wall 112 and the guide side wall 113 are disposed so as to face each other in parallel across the belt conveying path 111 in the width direction, and are separated by the path width amount of the belt conveying path 111 in a direction orthogonal to the orthogonal direction Y (i.e., the conveying direction X of the substrate 50).

Sprocket 120 is a disc-shaped member provided below tape transport path 111 in feeder main body 100. The sprocket 120 is a rotating body that rotates in a direction (i.e., a positive direction) in which the carrier tape 80 on the tape transport path 111 is transported from the tape insertion section 101 side toward the tape discharge section 102 side. The sprocket 120 may be rotatable in a direction (i.e., in the opposite direction) in which the carrier tape 80 is transported from the tape ejecting section 102 side to the tape inserting section 101 side.

Sprocket 120 has a rear-side sprocket 121 and a front-side sprocket 122. Rear sprocket 121 is rotatably attached to the rear side of tape feeding path 111 in feeder main body 100. The rear sprocket 121 is rotated forward to feed the carrier tape 80 inserted into the tape insertion portion 101 toward the tape discharge portion 102 along the tape transport path 111. Front toothed reel 122 is rotatably attached to the front side of belt conveying path 111 in feeder main body 100. The front-side sprocket 122 feeds the carrier tape 80, which is conveyed from the tape insertion portion 101 side along the tape conveying path 111, toward the tape discharge portion 102 side and from the tape discharge portion 102 toward the outside by forward rotation.

Two rear side sprocket wheels 121 are provided along the belt conveying path 111. Hereinafter, the upstream side (i.e., the rear side) rear-side toothed reel 121 is referred to as a first rear-side toothed reel 121-1, and the downstream side (i.e., the front side) rear-side toothed reel 121 is referred to as a second rear-side toothed reel 121-2, as appropriate. First rear-side sprocket 121-1 and second rear-side sprocket 121-2 rotate synchronously in the same rotational direction as each other.

Two front-side sprocket wheels 122 are provided along the belt conveying path 111. Hereinafter, the upstream-side (i.e., rear-side) front-side toothed reel 122 is referred to as a first front-side toothed reel 122-1, and the downstream-side (i.e., front-side) front-side toothed reel 122 is referred to as a second front-side toothed reel 122-2, as appropriate. First front-side sprocket 122-1 and second front-side sprocket 122-2 rotate synchronously in the same rotational direction as each other.

Each sprocket 120 (specifically, sprocket 121-1, 121-2, 122-1, and 122-2) has an engaging projection 123. The engaging projection 123 is external teeth projecting radially outward from the outer periphery of the toothed reel 120. Engaging projections 123 of second rear side sprocket 121-2, engaging projections 123 of first front side sprocket 122-1, and engaging projections 123 of second front side sprocket 122-2 are provided at predetermined angular intervals throughout the entire outer circumference. On the other hand, the engaging projection 123 of the first rear sprocket 121-1 is provided on a part of the outer periphery thereof. That is, first rear sprocket 121-1 has a portion where engaging projection 123 is not provided in its outer periphery.

A window 114 is provided in a portion of the tape transport path 111 above each sprocket 120. Each sprocket 120 is disposed so that the engaging projection 123 near the upper end passes through the window hole 114 and projects onto the belt conveying path 111. The engaging projections 123 can engage with the engaging holes 81b of the carrier tape 80 in a state of projecting on the tape conveying path 111.

The engaging projection 123 is formed so as to have a substantially square cross-sectional shape, and is formed so as to gradually decrease in width in the circumferential direction from the radially inner side to the radially outer side, that is, so as to have a trapezoidal shape in side view. The engaging projections 123 have a size capable of engaging with the engaging holes 81b of the carrier tape 80. As shown in fig. 9 and 10, the engaging projections 123 are formed so as to be engaged with the projection centers C of the engaging projections 123 so that the projection centers C coincide with the hole centers O of the engaging holes 81b with respect to the engaging holes 81b of the carrier tape 80. Specifically, as shown in fig. 11, the engagement projection 123 is formed such that the maximum dimension TAmax of the radially outer tip portion (specifically, the dimension of the diagonal line of the tip portion) is slightly smaller than the hole diameter H of the engagement hole 81b of the carrier tape 80 and the maximum dimension TBmax of the radially inner root portion (specifically, the dimension of the diagonal line of the root portion) is slightly larger than the hole diameter H of the engagement hole 81b of the carrier tape 80.

Each sprocket 120 has a gear 124. The gear 124 is formed on the inner diameter side of the outer circumference of the sprocket 120 where the engaging projection 123 is provided. The gear 124 is accommodated below the belt conveying path 111 without protruding from the window hole 114 to the belt conveying path 111.

Feeder 22 includes a rear side motor 130 attached to the rear side of feeder main body 100. The rear-side motor 130 is a servo motor that rotates the rear-side toothed reel 121, i.e., the first rear-side sprocket 121-1 and the second rear-side sprocket 121-2. Rear side motor 130 can rotate rear side sprockets 121-1 and 121-2 in the forward direction. Rear side motor 130 may be configured to rotate rear side sprockets 121-1 and 121-2 in the reverse direction.

A transmission gear 132 is provided on a rotary shaft 131 of the rear side motor 130. Transmission gear 132 meshes with gears 124 of rear sprocket wheels 121-1 and 121-2 via two gears 133 and 134 rotatably attached to feeder main body 100. In this configuration, when rear-side motor 130 rotates, gears 133 and 134 are used to decelerate the rotation and transmit the rotation to first rear-side sprocket 121-1 and second rear-side sprocket 121-2, and rear-side sprockets 121-1 and 121-2 rotate in synchronization with each other.

Feeder 22 includes a front motor 140 attached to the front side of feeder main body 100. Front-side motor 140 is a servo motor that rotates front-side sprocket 122, i.e., first front-side sprocket 122-1 and second front-side sprocket 122-2. Front-side motor 140 can rotate front-side sprockets 122-1 and 122-2 in the forward direction. Front motor 140 may be configured to rotate front sprockets 122-1 and 122-2 in the reverse direction.

A transmission gear 142 is provided on the rotating shaft 141 of the front-side motor 140. Transmission gear 142 meshes with gears 124 of front side sprocket wheels 122-1 and 122-2 via two gears 143 and 144 rotatably attached to feeder main body 100. In this configuration, when front-side motor 140 rotates, the rotation is decelerated using gears 143 and 144, and the rotation is transmitted to first front-side sprocket 122-1 and second front-side sprocket 122-2, and front-side sprockets 122-1 and 122-2 rotate in synchronization with each other.

Feeder 22 includes upper surface pressing member 150. Upper surface pressing member 150 is disposed above tape transport path 111, and is formed between second rear side sprocket 121-2 and first front side sprocket 122-1 so as to extend parallel to tape transport path 111. A shaft supporting portion 151 is formed at a distal end portion of the upper surface pressing member 150. Shaft support portion 151 is axially supported by a shaft portion provided in feeder main body 100. Upper surface pressing member 150 is attached to feeder main body 100 so as to be swingable by shaft support 151. The upper surface pressing member 150 is biased downward by a biasing member 152 such as a torsion spring. The upper surface pressing member 150 has a function of pressing the upper surface of the carrier tape 80 conveyed along the tape conveying path 111 when biased downward by the biasing member 152, and preventing the carrier tape 80 from floating.

Feeder 22 includes inlet pressing member 153, downstream pressing member 154, and operation lever 155. The inlet pressing member 153 is disposed above the belt conveying path 111 in proximity to the belt insertion portion 101, and is formed parallel to and along the rear portion of the belt conveying path 111. The downstream pressing member 154 is disposed on the front side (downstream side) of the entrance pressing member 153 above the belt conveying path 111. The inlet pressing member 153 and the downstream pressing member 154 are provided separately from the belt conveying path 111 and are capable of approaching the belt conveying path 111.

The inlet pressing member 153 is disposed below the rear portion of the downstream pressing member 154, and is attached to the rear portion of the downstream pressing member 154 via a pair of shafts 156. A spring 157 that biases the inlet pressing member 153 downward is attached to the pair of shafts 156. The entrance pressing member 153 has a function of pressing the carrier tape 80 inserted into the tape insertion portion 101 toward the tape transport path 111 when biased downward by the spring 157. Downstream pressing member 154 is attached to support members 158-1 and 158-2 attached to feeder main body 100 via a pair of shafts 159-1 and 159-2. The shafts 159-1 and 159-2 are provided with springs 160 for biasing the downstream pressing members 154 downward. The downstream pressing member 154 has a function of pressing the carrier tape 80 toward the tape feed path 111 on the downstream side of the inlet pressing member 153 when biased downward by the spring 160.

Operation lever 155 is provided to protrude rearward above the position of tape insertion portion 101 of feeder main body 100. Operation lever 155 is supported at the rear of feeder main body 100 so as to be rotatable about pivot 161. The operating lever 155 is rotated about the pivot 161 by the operator.

The inlet pressing member 153 is operatively connected to the operating lever 155. The inlet pressing member 153 has an engaging member 153a disposed between the pair of shafts 156. An operation engaging portion 155a is provided at the front-rear center portion of the operation lever 155. The operation engagement portion 155a engages with a lower surface of the engagement member 153a of the inlet pressing member 153. The operation lever 155 is rotated by a predetermined force (counterclockwise in fig. 5) by the urging force of the spring 162. In a normal state where a force against the urging force of the spring 162 (i.e., a force in a direction opposite to the rotational direction (clockwise direction in fig. 5) based on the urging force) is not applied to the operation lever 155, the operation engagement portion 155a is held at a predetermined lower end position as shown in fig. 5, and the entrance pressing member 153 is pressed toward the tape transport path 111 by the urging force of the spring 157, so that a new carrier tape 80 cannot be inserted into the tape insertion portion 101.

On the other hand, as shown in fig. 6, when the operating lever 155 is lifted upward by the operator and is pivoted about the pivot shaft 161 against the biasing force of the spring 162, the operating engagement portion 155a is raised, and the inlet pressing member 153 is raised against the biasing force of the spring 157. Therefore, when the operator lifts the operation lever 155, the entrance pushing member 153 is separated from the tape transport path 111, and thus a new carrier tape 80 can be inserted into the tape insertion portion 101.

A shutter 163 is pivotally supported at the rear of the inlet pressing member 153. The shutter 163 has a function of blocking the tape insertion portion 101 by its own weight and disabling insertion of a new carrier tape 80 in a state where the entrance pressing member 153 is pressed toward the tape conveying path 111. The shutter 163 is engaged with the rear portion of the downstream pressing member 154 and rotated when the inlet pressing member 153 moves up, so that the tape insertion portion 101 is opened to allow a new carrier tape 80 to be inserted.

A stopper 164 is provided adjacent to the downstream side of the inlet pressing member 153. The stopper member 164 is rotatably supported by the downstream pressing member 154 by a shaft support portion 164a provided at a central portion thereof. The stopper member 164 is provided with an abutting portion 164 b. The contact portion 164b is provided at a lower portion of the stopper member 164 forward of the shaft support portion 164 a. The contact portion 164b is a portion that protrudes downward and can contact the belt conveying path 111. The contact portion 164b is biased in a direction of contacting the tape transport path 111 by a spring (not shown) provided between the downstream pressing member 154 and the stopper member 164.

A stopper 164c is provided at a rear end of the stopper 164. The stop portion 164c is provided so as to be distant from the belt conveying path 111 and to be close to the belt conveying path 111. The stop portion 164c has a rear surface against which the front end of the carrier tape 80 can abut, and has a function of stopping the conveyance of the carrier tape 80 to the downstream side when the carrier tape abuts on the tape conveyance path 111. The stop portion 164c is disposed at a boundary position where engagement between the engagement hole 81b of the carrier tape 80, the front end of which abuts against the rear surface of the stop portion 164c, and the engagement protrusion 123 of the first rear side sprocket 121-1 is not generated. The engagement is achieved in a state where the stopper 164c is separated from the belt conveying path 111.

A projection 164d is provided in the stopper member 164. The protrusion 164d is provided on the upper portion of the stopper 164 forward of the shaft support portion 164 a. The protruding portion 164d protrudes upward. A cam follower 164e is provided at the tip of the projection 164 d. A cam portion 155b is formed at the front of the operating lever 155. The cam portion 155b is detachably engaged with the cam follower 164 e.

As shown in fig. 5, in a state where the operation lever 155 is rotated by a predetermined amount by the biasing force of the spring 162 and the entrance pressing member 153 is held at a position abutting on the belt conveying path 111, the cam portion 155b of the operation lever 155 is separated from the cam follower 164e of the stopper member 164. In this case, the stopper member 164 is rotated in the reverse direction about the shaft support portion 164a by the biasing force of a spring, not shown, so that the abutting portion 164b abuts against the tape conveying path 111 and the stopper portion 164c is kept in a state of being separated from the tape conveying path 111.

On the other hand, as shown in fig. 6, when the operating lever 155 is rotated against the urging force of the spring 162, the cam portion 155b of the operating lever 155 engages with the cam follower 164e of the stopper member 164. In this case, the stopper member 164 is rotated about the shaft support portion 164a in a predetermined direction against the biasing force of a spring, not shown, and the stopper portion 164c is brought into contact with the belt conveying path 111. When the carrier tape 80 is inserted into the tape insertion portion 101 in the above state, the inserted carrier tape 80 enters between the tape upper surface biasing member and the tape lower surface biasing member in the feeder main body 100, and then the tip of the carrier tape 80 abuts against the stopper portion 164c of the stopper member 164 to be stopped.

After the carrier tape 80 (hereinafter, this carrier tape 80 is referred to as an old carrier tape 80 ") passes between the tape feed path 111 and the abutting portion 164b of the stopper member 164, the abutting portion 164b is lifted by the old carrier tape 80, and the stop portion 164c of the stopper member 164 abuts against the tape feed path 111. When a new carrier tape 80 (hereinafter, this carrier tape 80 is referred to as a new carrier tape 80) is inserted into the tape insertion portion 101 and superimposed on the old carrier tape 80 in the above-described state, the new carrier tape 80 enters between the tape upper surface urging member and the tape lower surface urging member, and then the tip of the new carrier tape 80 abuts against the stopper portion 164c of the stopper member 164 and stops. Thus, when the old carrier tape 80 is conveyed on the tape conveying path 111, the conveyance of the new carrier tape 80 to the downstream side is prevented, and the new carrier tape 80 stands by at its position.

The feeder 22 includes a tape peeling device 165. As shown in fig. 8, tape stripping device 165 is disposed on the upper front side of feeder main body 100. The tape stripping device 165 is provided to the tape guide 110. That is, the tape guide 110 has a tape peeling means 165. The tape peeling means 165 has a peeling member 166 and a folding back member 167.

The peeling member 166 is disposed on the upstream side in the conveying direction with respect to the component supply position L, for example, on the downstream side in the conveying direction of the first front side sprocket 122-1 and on the upstream side in the conveying direction of the second front side sprocket 122-2, the peeling member 166 is a blade member that is formed by peeling the cover tape 83 from the base tape 81 of the carrier tape 80 so as to be able to take out (suck or transfer) the component 60 from the housing hole 81a at the component supply position L, and the peeling member 166 is formed substantially horizontally so that the cutting edge of the front end of the peeling member 166 is inserted between the base tape 81 and the cover tape 83 during the conveyance of the carrier tape 80.

The peeling member 166 is disposed and formed to be offset to one side in the width direction so as to peel off only one of both sides (two portions) in the width direction of the base tape 81 and the cover tape 83 bonded to each other with the housing hole 81a interposed therebetween. The tip of the peeling member 166 may be formed at a position in the width direction corresponding to one of the two bonding portions of the base tape 81 and the cover tape 83. Therefore, when the cover tape 83 is peeled from the base tape 81 by the peeling member 166, the cover tape is peeled from the base tape 81 on one end side in the width direction and is adhered to the base tape 81 on the other end side.

The folding member 167 is disposed on the downstream side in the conveying direction with respect to the peeling member 166 (i.e., the peeling position at which the cover tape 83 is peeled from the base tape 81 by the peeling member 166), and on the upstream side in the conveying direction with respect to the component supply position L, the folding member 167 is a member that erects and folds one end side in the width direction of the peeled cover tape 83 (specifically, an end side at which the accommodation holes 81a for accommodating the components 60 at both ends in the width direction of the carrier tape 80 are disposed), and the folding member 167 is formed in a plate shape that spreads substantially horizontally.

The component take-out section is provided in the guide upper wall of the tape guide 110, and is a hole section which is opened in the guide upper wall and which can take out the component 60 accommodated in the accommodation hole 81a of the base tape 81, the component take-out section is provided at a position on the downstream side in the conveying direction from the peeling position, on the downstream side in the conveying direction of the first front-side sprocket 122-1, and on the upstream side in the conveying direction of the second front-side sprocket 122-2, the component take-out section is provided at the predetermined component supply position L of the feeder 22, the component take-out section is formed in such a manner that the suction nozzle of the component transfer section 30 which sucks and holds the component 60 does not come into contact with the guide upper wall at the time of transfer of the component 60, and the part of the carrier tape 80 which passes through the component take-out section hangs down from the front of the feeder 22 and is discharged to the outside of the feeder.

3. Operation of the feeder

In the feeder 22 described above, the old carrier tape 80 is wound around the reel 70 held by the first holding portion 23a, and the new carrier tape 80 is wound around the reel 71 held by the second holding portion 23 b. In a normal state where the operation lever 155 is held by the biasing force of the spring 162, as shown in fig. 5, the inlet pressing member 153 is held at a position abutting against the belt conveying path 111, and the shutter 163 rotates by its own weight to close the belt conveying path 111.

When the operation lever 155 is lifted against the biasing force of the spring 162 in the above-described state, the inlet pressing member 153 is lifted against the biasing force of the spring 157 by the lifting of the operation engagement portion 155a as shown in fig. 6. In this case, the entrance pressing member 153 is separated from the tape conveying path 111, and the shutter 163 is rotated by the downstream pressing member 154 to open the tape insertion portion 101 in a state where the carrier tape 80 can be inserted. At the same time, the stopper member 164 is rotated by the cam portion 155b of the operating lever 155, and the stop portion 164c abuts against the belt conveying path 111.

When the operator inserts the old carrier tape 80 from the tape insertion section 101 into the tape transport path 111 in this state, the leading end of the old carrier tape 80 can be inserted to a position where it abuts against the stop section 164c of the stopper member 164. When the operation of lifting the operating lever 155 is released in a state where the old carrier tape 80 is inserted to the position of abutting against the stopper 164c, the operating lever 155 is rotated by the biasing force of the spring 162 and returned to the original position. In this origin return state, as shown in fig. 7, the inlet pressing member 153 is lowered toward the tape conveying path 111 by the urging force of the spring 157, thereby pressing the old carrier tape 80 toward the tape conveying path 111, and the shutter 163 blocks the tape insertion portion 101 by its own weight. At the same time, the stopper member 164 causes the contact portion 164b to contact the belt conveying path 111 by the biasing force of the spring, and causes the stopper portion 164c to separate from the belt conveying path 111.

Insertion of the old carrier tape 80 into the tape insertion section 101 is detected by various sensors, and when the presence of the old carrier tape 80 on the tape transport path 111 is detected and the return of the operation lever 155 to the home position is detected, the rear-side motor 130 is driven so that the first and second rear-side sprocket wheels 121-1 and 121-2 rotate in the forward direction. When the rear motor 130 is driven, the first and second rear sprockets 121-1 and 121-2 rotate in the forward direction.

In this case, first, the separation of the stop portion 164c from the tape transport path 111 allows the front end side of the old carrier tape 80 to be transported from the stop portion 164c to the downstream side in the transport direction, and the first rear-side sprocket 121-1 rotates forward in a state where the engaging projections 123 of the first rear-side sprocket 121-1 are engaged with the engaging holes 81b of the old carrier tape 80, so that the old carrier tape 80 is transported to the tape ejection portion 102 side by the forward rotation of the first rear-side sprocket 121-1. In the above conveyance, the downstream side pressing member 154 is lifted up against the urging force of the spring 160 by the old carrier tape 80, and the old carrier tape 80 is conveyed between the downstream side pressing member 154 and the tape conveying path 111.

As described above, the engaging projection 123 of the first rear side sprocket 121-1 is provided only on a part of the outer periphery of the first rear side sprocket 121-1. Therefore, after the engaging projections 123 engage with the engaging holes 81b of the old carrier tape 80, the old carrier tape 80 is intermittently fed toward the tape discharge section 102 side. Therefore, the carrier tape 80 is prevented from being pulled rapidly by the first rear sprocket 121-1. When the downstream pressing member 154 is lifted, the shaft support portion 164a of the stopper member 164 is integrally lifted.

When the old carrier tape 80 is being transported by the forward rotation of the first rear-side sprocket 121-1, the engaging projections 123 of the second rear-side sprocket 121-2 engage with the engaging holes 81b on the front end side of the old carrier tape 80. After the engagement, the old carrier tape 80 is conveyed toward the tape ejecting section 102 by the forward rotation of the second rear sprocket 121-2. As described above, the engaging projections 123 of the second rear side sprocket 121-2 are provided over the entire outer circumference of the second rear side sprocket 121-2. Therefore, after the engaging projections 123 of the second rear-side sprocket 121-2 are engaged with the engaging holes 81b of the old carrier tape 80, the old carrier tape 80 is moved to the tape ejecting section 102 in a short time.

When the old carrier tape 80 is conveyed by the forward rotation of the second rear-side sprocket 121-2, first, the front end of the old carrier tape 80 enters below the upper surface pressing member 150 from between the guide portion formed at the rear end of the upper surface pressing member 150 and the tape conveying path 111. Therefore, the leading end side of the old carrier tape 80 is conveyed toward the leading-side toothed reel 122 side while being suppressed from floating from the tape conveying path 111 by the upper surface pressing member 150.

When the sensor detects that the leading end of old carrier tape 80 has reached the upstream side in the transport direction with respect to first front-side sprocket 122-1 as a result of the transport of old carrier tape 80 by the forward rotation of second rear-side sprocket 121-2, rear-side motor 130 and front-side motor 140 are driven so that first and second rear-side sprockets 121-1 and 121-2 and first and second front-side sprockets 122-1 and 122-2 intermittently rotate in the forward direction. When the rear motor 130 and the front motor 140 are driven, the rear sprockets 121 and the front sprockets 122 are intermittently rotated in the forward direction. The angle of each operation of the intermittent rotation is performed at the pitch interval of the components 60 accommodated in the carrier tape 80.

When the engaging projections 123 of the first front-side sprocket 122-1 are engaged with the engaging holes 81b of the old carrier tape 80 in the above-described state, the old carrier tape 80 is transported toward the tape ejection section 102 by the forward rotation of the first front-side sprocket 122-1, and the cover tape 83 is peeled off from the old carrier tape 80 by the tape peeling device 165 during the transportation, and when the engaging projections 123 of the second front-side sprocket 122-2 are engaged with the engaging holes 81b of the old carrier tape 80, the old carrier tape 80 is transported toward the tape ejection section 102 by the forward rotation of the second front-side sprocket 122-2, and it is noted that the components 60 accommodated in the old carrier tape 80 are positioned at the component supply position L and transferred by the component section 30 at each stop of the intermittent rotations of the rear-side sprocket 121 and the front-side sprocket 122.

Further, during the conveyance of the old carrier tape 80 on the tape conveyance path 111, the old carrier tape 80 pushes and lifts the abutting portion 164b of the stopper member 164, and therefore the stopper member 164 rotates about the shaft support portion 164a against the urging force of the spring. Thereby, the stopper 164c of the stopper 164 comes into contact with the upper surface of the old carrier tape 80.

When the operation lever 155 is lifted and rotated against the biasing force of the spring 162 in this state, the inlet pressing member 153 is separated from the tape conveying path 111, and the shutter 163 opens the tape insertion portion 101, so that a new carrier tape 80 can be inserted. When the leading end side of the new carrier tape 80 is inserted between the old carrier tape 80 and the inlet pressing member 153 through the tape insertion portion 101, the leading end of the new carrier tape 80 enters between the tape upper surface urging member and the tape lower surface urging member and then abuts against the stopper portion 164c of the stopper member 164, and the new carrier tape 80 stops being conveyed at this position. Therefore, the new carrier tape 80 is prevented from being conveyed to the downstream side.

As described above, when the operation of lifting the operation lever 155 is released in a state where the new carrier tape 80 is inserted to the position of abutting against the stopper 164c, the operation lever 155 is rotated by the biasing force of the spring 162 and is returned to the original position. At this time, the new carrier tape 80 lifts up the abutting portion 164b of the stopper member 164, and thus the stop of the new carrier tape 80 is maintained by the stop portion 164c of the stopper member 164.

As described above, when the trailing end of the old carrier tape 80 is conveyed to the downstream side in the conveying direction from the leading end of the new carrier tape 80 while the new carrier tape 80 is kept stopped, the new carrier tape 80 contacts the upper surface of the tape conveying path 111 on the upstream side in the conveying direction with respect to the old carrier tape 80, and the engaging projections 123 of the first rear sprocket 121-1 engage with the engaging holes 81b of the new carrier tape 80. Then, by the forward rotation of the first front side sprocket 122-1, the new carrier tape 80 enters the gap formed between the tape transport path 111 and the stopper 164 due to the presence of the old carrier tape 80, and is transported toward the tape ejecting section 102. When the tip of the new carrier tape 80 lifts up the contact portion 164b, the stopper member 164 rotates against the biasing force of the spring as described above, and the stop portion 164c prevents the new carrier tape 80 from entering.

Thus, the second carrier tape 80 can be fed when the feeding of the first carrier tape 80 is completed by inserting the two carrier tapes 80 into the tape feed path 111, and therefore, the two carrier tapes 80 can be fed continuously in time without feeding the two carrier tapes 80 from the stopper 164c to the downstream side in the feeding direction in a superimposed state, and the feeding of the components 60 accommodated in the carrier tapes 80 to the component supply position L can be continuously performed without interrupting the feeding, and the components 60 accommodated in the carrier tapes 80 can be supplied to the predetermined component supply position L by driving both the rear-side motor 130 and the front-side motor 140 so that each toothed reel 120 rotates normally.

4. Relationship between width of carrier tape and arrangement position of sprocket of feeder

As described above, the base tape 81 of the carrier tape 80 is provided with the engaging holes 81b into which the engaging projections 123 of the sprocket 120 are engaged. The engaging holes 81b are arranged in a row along the longitudinal direction of the base tape 81. The feeder main body 100 of the feeder 22 is provided with a tape feed path 111 that supports the lower surface of the carrier tape 80, and a tape guide 110 that has a pair of guide side walls 112 and 113, and the pair of guide side walls 112 and 113 guide the carrier tape 80 in a state in which the pair of guide side walls 112 and 113 can contact the side surfaces in the width direction of the carrier tape 80. The belt conveyance path 111 has a path width equal to or slightly larger than the dimension of the carrier belt 80 in the width direction. The guide side walls 112 and 113 separate the path width amount of the tape conveying path 111 in the conveying direction X (i.e., the width direction of the carrier tape 80 being guided).

Sprocket 120 is disposed on feeder main body 100 so that engagement projection 123 near the upper end thereof protrudes upward through window hole 114 of tape feeding path 111. The engaging projections 123 are formed so as to engage with the projection centers C of the engaging projections 123 and the hole centers O of the engaging holes 81b with respect to the engaging holes 81b of the carrier tape 80, specifically, so as to have a smaller maximum dimension TAmax of the radially outer tip portion and a larger maximum dimension TBmax of the radially inner root portion than the hole diameter H of the engaging holes 81b of the carrier tape 80.

In the feeder 22, the engagement projections 123 of the sprocket 120 (particularly, the front side sprocket 122) which pass through the window holes 114 of the tape conveying path 111 and project upward are engaged with the engagement holes 81b of the carrier tape 80 which is supported by the tape conveying path 111 on the lower surface and is guided by the guide side walls 112, 113 of the tape guide 110 on the side surface. This engagement is achieved by: when the sprocket 120 is rotated, first, the tip end portion of the engagement protrusion 123 having the maximum dimension TAmax smaller than the hole diameter H of the engagement hole 81b of the carrier tape 80 is inserted into the engagement hole 81b, and as the engagement protrusion 123 is inserted, the root portion of the engagement protrusion 123 having the maximum dimension TBmax larger than the hole diameter H of the engagement hole 81b is inserted into the engagement hole 81b, and the side surface of the root portion comes into contact with the hole edge of the engagement hole 81 b.

According to this engagement, when the projection center C of the engagement projection 123 is displaced from the hole center O of the engagement hole 81b at the initial stage of insertion of the engagement projection 123 into the engagement hole 81b, only an offset portion of the hole edge of the engagement hole 81b comes into contact with the side surface of the engagement projection 123 at the initial stage of engagement, and a portion of the hole edge is pressed radially outward, whereby the portion around the engagement hole 81b of the carrier tape 80 is moved in the width direction so that the hole center O and the projection center C are aligned, and position adjustment is performed.

Carrier tape 80 inserted into tape insertion portion 101 of feeder main body 100 is supported by tape transport path 111 at the lower surface and guided by guide side walls 112 and 113 of tape guide 110 at the side surfaces, and is fed toward tape discharge portion 102 by rotating sprocket 120 in a state where engagement projections 123 of sprocket 120 are engaged with engagement holes 81 b.

In feeder 22, sprocket 120 is disposed at a tape offset position (D < W) where a separation distance D from engagement projection 123 to one guide sidewall 112 of a pair of guide sidewalls 112 and 113 of tape guide 110 is smaller than a width dimension W of carrier tape 80 from engagement hole 81b to a width side end (specifically, a side end of carrier tape 80 placed on tape transport path 111 on the side of guide sidewall 112) as shown in fig. 10. Here, the size of | W-D | may be set to a maximum value obtained as a tolerance of the width of the carrier tape 80 or the separation distance of the pair of guide side walls 112 and 113 or as a tolerance obtained by accumulating the above tolerances.

The sprocket 120 disposed at the tape offset position where the relationship D < W is satisfied is specifically the front side sprocket 122 (i.e., both the first and second front side sprockets 122-1 and 122-2) provided in the feeder 22. The distance D may be a distance from the center C of the engaging projection 123 to the wall surface of the guide side wall 112 in the axial direction (i.e., the thickness direction of the sprocket 120) in which the rotational axis of the sprocket 120 extends, for example. The dimension W may be, for example, a distance from the hole center O of the engagement hole 81b to the side edge in the width direction of the carrier tape 80.

In the present embodiment, the guide side wall that is the target of the separation distance D and the side end of the carrier tape 80 that is the target of the dimension W are the guide side wall 112 on the side where the engaging holes 81b are arranged on both sides in the width direction of the carrier tape 80 guided on the tape transport path 111 as shown in fig. 9 and 10, or the side end of the carrier tape 80, respectively. However, the guide side walls and the side ends may be either one of the pair of guide side walls 112 and 113 of the tape guide 110 or both side ends of the carrier tape 80 in the width direction.

In the structure of the feeder 22, when the carrier tape 80 is fed along the tape feed path 111 by the rotation of the sprocket 120, a force is generated by the engaging projections 123 to move the portion around the engaging holes 81b of the carrier tape 80 in the width direction of the guide sidewall 112 side in the process of inserting the engaging projections 123 of the sprocket 120 into the engaging holes 81b of the carrier tape 80 in order from the tip end portion to the base end portion thereof. The amount by which the carrier tape 80 can move in the width direction by this force is larger than the amount that can be moved when the separation distance D is equal to the dimension W. Therefore, even if there is a tolerance in the width of the carrier tape 80 and the separation distance between the pair of guide side walls 112 and 113, the side end surface of the carrier tape 80 located on the guide side wall 112 side with respect to the engaging hole 81b in which the engaging projection 123 is engaged can be reliably brought into contact with and pressed against the guide side wall 112.

When the carrier tape 80 is pressed against one guide sidewall 112 of the pair of guide sidewalls 112 and 113 and fed along the tape transport path 111, the carrier tape 80 is linearly transported on the tape transport path 111 in a state of being in contact with the guide sidewall 112 by the rotation of the sprocket 120, and therefore, the carrier tape 80 can be suppressed from meandering on the tape transport path 111. Therefore, the accuracy of the position of component 60 housed in housing hole 81a of carrier tape 80 in the width direction with respect to feeder main body 100 can be stabilized.

Therefore, when the carrier tape 80 accommodating the particularly minute components 60 is fed, it is possible to suppress the position shift in the width direction relative to the width and length of the components 60 from becoming excessively large, and thus even if the components 60 accommodated in the carrier tape 80 are minute, it is possible to improve the suction accuracy when the suction nozzles of the mounting head 33 suck the components 60 at the component supply position L, and to improve the productivity in mounting the components 60 on the substrate 50.

In the present embodiment, the front toothed reel 122 of the feeder 22 is disposed at the belt offset position where the relationship D < W is satisfied. Therefore, in the area of tape feed path 111 of feeder 22 from first front-side sprocket 122-1 to second front-side sprocket 122-2, the accuracy of the position of component 60 housed in carrier tape 80 in the width direction with respect to feeder main body 100 can be stabilized, and thus the above-described improvement in suction accuracy and the above-described improvement in productivity can be maximized.

In the above-described embodiment, first front-side sprocket 122-1 corresponds to the "upstream-side sprocket" described in claim 2, and second front-side sprocket 122-2 corresponds to the "downstream-side sprocket" described in claim 2.

5. Deformation mode

In the above-described embodiment, the rear-side toothed reel 121 is provided with two first rear-side sprocket 121-1 and two second rear-side sprocket 121-2. However, feeder 22 is not limited to this, and may be configured to have one, three, or more rear sprocket 121. Likewise, front-side toothed reel 122 is provided with two of first front-side toothed reel 122-1 and second front-side toothed reel 122-2. However, feeder 22 is not limited to this, and may be applied to a configuration in which one, three, or more front side sprocket 122 is provided.

In the above-described embodiment, the two first rear side sprocket 121-1 and the second rear side sprocket 121-2 are coupled to the single rear side motor 130 and are rotated in synchronization by the rear side motor 130. However, feeder 22 is not limited to this, and may be applied to a configuration in which rear side sprockets 121-1 and 121-2 are coupled to respective rear side motors and are rotated synchronously by the rear side motors. Similarly, two first front-side sprocket 122-1 and two second front-side sprocket 122-2 are coupled to one front-side motor 140 and are rotated synchronously by the front-side motor 140. However, feeder 22 is not limited to this, and may be applied to a configuration in which front side sprockets 122-1 and 122-2 are coupled to respective front side motors and are rotated synchronously by the respective front side motors.

In the above-described embodiment, first and second front side sprocket wheels 122-1 and 122-2 of feeder 22 are disposed at the belt bias positions where the relationship D < W is satisfied. However, the feeder 22 is not limited thereto.

For example, all of the sprocket wheels 120 (i.e., the first and second rear side sprocket wheels 121-1 and 121-2 and the first and second front side sprocket wheels 122-1 and 122-2) included in feeder 22 may be disposed at the tape offset position where the relationship D < W is satisfied. That is, first and second rear side sprocket wheels 121-1 and 121-2 may be disposed at a tape offset position where the above-described relationship of D < W is established with a guide sidewall of a tape guide provided on the rear side of feeder main body 100 of feeder 22. According to this configuration, the accuracy of the position of the component 60 housed in the carrier tape 80 in the width direction with respect to the feeder main body 100 can be stabilized over the entire area of the tape conveying path 111 of the feeder 22 extending from the tape insertion section 101 to the tape discharge section 102, and thus the improvement of the suction accuracy and the improvement of the productivity can be maximized.

Further, in order to stabilize the accuracy of the position in the width direction of the component 60 at the component supply position L for sucking the component 60, it is effective to bring the carrier tape 80 into contact with and press against the guide side wall 112 particularly on the upstream side in the conveying direction with respect to the component supply position L, and therefore, as shown in fig. 12, the sprocket 120 (specifically, only the first front-side sprocket 122-1) arranged on the upstream side in the conveying direction with respect to the component supply position L may be arranged at a tape bias position where the above-described relationship of D < W holds true, that is, the second front-side sprocket 122-2 arranged on the downstream side in the conveying direction with respect to the component supply position L may be arranged at a position where the relationship of D < W holds true.

In this modification, only the first front-side sprocket 122-1 disposed on the nearest upstream side in the transport direction with respect to the component supply position L is disposed at the tape offset position where the relationship D < W holds, but all of the first rear-side sprocket 121-1, the second rear-side sprocket 121-2, and the first front-side sprocket 122-1 disposed on the upstream side in the transport direction with respect to the component supply position L may be disposed at the tape offset positions where the relationship D < W holds.

Further, in the case where feeder 22 has two or more sprocket reels 120, in order to improve the accuracy of suction of component 60 at component supply position L, it is more effective to bring carrier tape 80 into contact with and press against guide sidewall 112 as it approaches component supply position L, and therefore, sprocket reel 120 closest to component supply position L (in the above-described embodiment, one of first front-side sprocket 122-1 and second front-side sprocket 122-2 that is closer to component supply position L) may be placed at a tape offset position where the above-described relationship of D < W holds true.

In this regard, in order to stabilize the accuracy of the widthwise position of the component 60 at the component feeding position L, it is effective to bring the carrier tape 80 into contact with and press against the guide side wall 112 on the downstream side in the feeding direction with respect to the peeling position at which the cover tape 83 is peeled from the carrier tape 80, and therefore, as shown in fig. 13, the second front-side sprocket 122-2 disposed on the downstream side in the feeding direction with respect to the peeling position may be disposed at a tape-deflecting position where the relationship D < W mentioned above holds, that is, the sprocket 120 disposed on the upstream side in the feeding direction with respect to the peeling position (particularly, the first front-side sprocket 122-1) may be disposed at a position where the relationship D ═ W holds, and according to this structure, the carrier tape 80 may be brought into contact with and press against one guide side wall 112 on the downstream side in the feeding direction with respect to the peeling position, and therefore, even if the widthwise position of the carrier tape 80 is shifted at the peeling position, the tape 80 may be brought into contact with and press against the guide side wall 112 at the downstream side of the tape-feeding position of the second front-side sprocket 122, and the widthwise position of the carrier tape-peeling position may be corrected for the accuracy of the component-feeding side sprocket 80, and the engagement of the guide side wall 112.

In the above-described embodiment, the guide sidewall 112 of the pair of guide sidewalls 112 and 113 of the tape guide 110, which is the same side as the side where the engaging holes 81b in the carrier tape 80 are arranged, is set as a guide sidewall that the carrier tape 80 is brought into contact with and pressed by the sprocket 120. However, feeder 22 is not limited to this, and may be configured such that guide sidewall 113 on the side opposite to the side where engagement holes 81b are arranged in carrier tape 80 (i.e., on the same side as the side where housing holes 81a are arranged) is a guide sidewall that carrier tape 80 is brought into contact with and pressed by sprocket 120.

In the above embodiment, the feeder 22 is an automatic loading feeder having the rear-side toothed reel 121 on the rear side in the feeder main body 100 and the front-side toothed reel 122 on the front side in the feeder main body 100. However, the feeder 22 is not limited to this, and may be applied to a feeder that is not an automatic loading feeder.

In the above-described embodiment, the carrier tape 80 has a structure in which the base tape 82 is bonded to the lower surface of the base tape 81 provided with the through-hole 81 a. However, the carrier tape 80 is not limited to this, and may be an embossed carrier tape having a base tape provided with a groove for housing the component 60 without bonding the base tape 82 to the lower surface.

The feeder 22 is not limited to the above-described embodiment and modification, and various modifications can be made without departing from the spirit of the invention.

Description of the reference numerals

1: component mounting machine, 21: slot, 22: feeder, 50: substrate, 60: element, 80: carrier tape, 81: base band, 81 b: engagement hole, 83: cover tape, 100: feeder body, 110: tape guide, 111: belt conveyance path, 112, 113: guide side wall, 120: sprocket, 121-1, 121-2: rear side sprocket, 122-1, 122-2: front sprocket, 123: engaging projection, 165: tape stripping device, 166: and a peeling member.