JP3233689B2 - Tape film winding device for electronic components - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover film winding device for a taping electronic component, and more particularly to a cover film winding device in which a one-way clutch prevents rotation of a winding reel in a direction opposite to the winding direction. The present invention relates to an improvement of a removing device.

[0002] Taping electronic components are electronic components held on tape. For example, an electronic component is accommodated in each of the component accommodating recesses formed at equal intervals in the carrier tape, and the openings of the component accommodating recesses are closed by a cover film adhered to the carrier tape, so that the carrier tape is fed. Sometimes, the electronic component is prevented from jumping out of the component receiving recess. When the electronic component is supplied to the electronic component mounting device or the like, the cover film is peeled off from the carrier tape and wound up by the cover film winding device.

Conventionally, the cover film winding device has (a) a device main body, (b) a support shaft fixed to the device main body so as not to rotate, and (c) a rotatable mount to the support shaft. A take-up reel for taking up a cover film of a taping electronic component; (d) a reel rotation drive device for rotating the take-up reel to take up the cover film by a predetermined length; and (e) a support shaft and a take-up reel. And a one-way clutch that allows rotation of the take-up reel in the winding direction of the cover film but prevents rotation in the reverse direction.

If the take-up reel can rotate freely in both the winding direction and the reverse direction, the reel rotation drive device cannot reliably rotate the reel by a fixed amount, or When the cover film is rotated in the opposite direction, the cover film may be sagged, and the slack may be taken up during winding, resulting in a shortage of the cover film from the carrier tape. Therefore, a one-way clutch is provided to prevent the take-up reel from rotating in the reverse direction.

[0005]

However, if a one-way clutch is provided to prevent rotation of the take-up reel in a direction opposite to the take-up direction, a problem may occur. For example, when attaching while taking up the cover film when attaching the take-up reel to the support shaft, if it cannot be rotated in the opposite direction, the amount taken up for attachment cannot be returned, and Since the electronic component at the location covered by the take-up cover film cannot be returned to the component take-out position, it is wasted. There is also a problem that the work of attaching and detaching the take-up reel is difficult. It is an object of the present invention to provide a cover film winding device capable of releasing a reverse rotation preventing function of a one-way clutch as required.

[0006]

According to the first aspect of the present invention, there is provided an image forming apparatus, comprising: (a) an apparatus main body;
The one-way clutch of the cover film winding device including the support shaft, (c) the take-up reel, (d) the reel rotation drive device, and (e) the one-way clutch, the reverse of the one-way clutch. that to release the reverse blocking function to prevent rotation
By setting the one-way clutch to the reverse rotation allowable state,
An operation state in which the take-up reel is freely rotatable in the reverse direction ;
The gist of the present invention is to provide a release device that can take a non-operation state in which the blocking function is not released. The cover film winding device according to the second aspect of the present invention may further include an operation state maintaining member attached to at least one of the apparatus main body and the support shaft from a radial direction of the support shaft to keep the release device in an operation state. It is composed of According to a third aspect of the present invention, there is provided a cover film take-up device in which the support shaft extends in a direction perpendicular to the axis of the support shaft at least at two locations diametrically separated on the outer peripheral surface of the portion protruding in the axial direction from the one-way clutch. The operating state maintaining member is a plate-shaped member having a pair of engaging legs inserted into the engaging groove in a radial direction of the support shaft. .

[0007]

In the cover film take-up device according to the first aspect of the present invention, when the take-up reel is rotated only in the take-up direction, the release device is inactive and the take-up reel is moved in the take-up direction and in the reverse direction. When rotating in the direction, the release device is activated. In the cover film take-up device according to the second aspect of the present invention, when the take-up reel is rotated in the take-up direction and the reverse direction, the operating state maintaining member is attached to at least one of the device main body and the support shaft. , The release device can be kept active. In the cover film winding device according to the third aspect of the present invention, when the take-up reel is rotated in the winding direction and the reverse direction, the engaging leg of the operating state maintaining member is provided on the support shaft. The release device can be maintained in the operative state by being inserted into and attached to the device.

[0008]

As described above, according to the first aspect of the present invention, the take-up reel can be rotated in the direction opposite to the take-up direction by releasing the reverse rotation preventing function of the one-way clutch. Therefore, when the take-up reel is attached to the support shaft, the cover film can be returned even if it is wound up extra,
The electronic components can be prevented from being wasted, and the take-up reel can be easily attached to and detached from the support shaft, and effects such as improved workability can be obtained. According to the invention of claim 2, in addition to the effect of the invention of claim 1, the release device can be kept in the operating state without using the hand of the operator, and the take-up reel is in the reverse direction to the take-up direction. Can be obtained for a desired period of time, and the effect of further improving workability is obtained. In addition, since the operation state maintaining member is attached from the radial direction of the support shaft, it is sufficient if there is a mounting space in any direction perpendicular to the axis of the support shaft, and the take-up reel is moved in the axial direction of the support shaft. A large number are provided side by side, and can be easily mounted even when there is no extra space in the axial direction. According to the invention of claim 3, claim 1
In addition to the effects of the inventions of (2) and (3), the operation state maintaining member has a plate-like shape, the configuration is simple, and the support shaft may be provided with an engagement groove, so that the operation state of the release device is simplified. With such a configuration, it is possible to suppress an increase in apparatus cost. Furthermore, since the operation state maintaining member is attached to the support shaft by inserting the engagement leg into the engagement groove,
The release device can be reliably maintained in the operating state without moving to the axis of the support shaft.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 3 shows an electronic component supply device 8 including a cover film winding device 6 according to one embodiment of the present invention. In FIG. 1, reference numeral 10 denotes a block, and a rectangular guide groove 12 is formed on the upper surface of the block 10.
The taping electronic component 14 wound on a reel or the like (not shown) is fed linearly in the tape feed direction indicated by an arrow A in FIG.

As shown in FIG. 5, a taping electronic component 14 has a rectangular electronic component receiving recess (hereinafter, simply referred to as a receiving recess) 16 and an outgoing hole 18 which are opened at an equal pitch along the longitudinal direction. And a thin and transparent cover film 22 attached to the upper surface of the carrier tape 20 (see FIG. 3).
And a chip-shaped electronic component 24 having no lead wire.
Are tapered, and a recessed portion 16 is formed so that a portion projecting downward fits into the guide groove 12.

The taping electronic component 14 is
And the electronic component 24 is supplied to the component mounting apparatus at a constant pitch. The configuration of the feeder 30 is described in
This is the same as the feeder described in Japanese Patent No. 50640, and will be briefly described. The feed device 30 includes a slider 34 fitted slidably in a guide groove 32 formed in the block 10 in a direction parallel to the tape feeding direction A. The slider 34 is advanced by a pair of springs 36 provided in the guide groove 32 to a forward position where the front end thereof comes into contact with an end face 38 of the guide groove 32, while a return lever 40 is provided.
As a result, the engagement protrusion 42 is retracted against the urging force of the spring 36 to the retracted position where the engagement projection 42 contacts the stopper 44.

The return lever 40 is rotatably attached to a bracket 46 fixed to the block 10 by a pin 48. When the operation lever 52 is rotated by a cam device (not shown), an arrow B in FIG. Is rotated in the direction indicated by. The return lever 40
Is also attached to the bracket 46 by another pin 54, so that the movement amount of the lower end of the return lever 40, that is, the movement stroke of the slider 34 is the same distance as one pitch of the accommodation recess 16 of the carrier tape 20. Adjusted. The stopper 44 is replaced according to the movement stroke of the slider 34, and defines the retracted position of the slider 34.

A feed member 60 is rotatably engaged with a circular engagement recess 58 formed at the front end of the slider 34, and is advanced and retracted with the reciprocation of the slider 34. The other end of the feeding member 60, that is, the front end, has a notch 62 opened on the upper surface of the block 10.
A pair of feed pins 64 that can protrude upward from the upper end are provided so as to engage with adjacent feed holes 18 formed in the carrier tape 20.

The feed member 60 is urged in a clockwise direction in FIG. 3 by a spring 66 disposed between the feed member 60 and the engagement protrusion 42 of the slider 34, while the feed member 60 extends in the longitudinal direction. Driven part 68 projecting from the middle part of
Is depressed by a cam device (not shown), and is turned counterclockwise against the urging force of the spring 66. As a result, the feed member 60 is rotated between an engagement position where the feed pin 64 is engaged with the feed hole 18 and a release position where the feed pin 64 is separated from the feed hole 18, and the carrier tape 20.
When the feed member 60 is moved forward with the feed pin 64 engaged with the feed hole 18, the slider 34
The tape is fed in the tape feed direction A by a fixed distance determined by the movement stroke of the tape, that is, by one pitch of the accommodating recesses 16 adjacent to each other.

The cam device that pushes down the driven part 68 holds the feed member 60 in the disengaged position while the feed member 60 is advanced to the advanced position and then moved backward, but is moved to the retracted position. Once reached, it is operative to allow the feed member 60 to remain in the engaged position during the forward movement.

Notch 7 formed at the front end of feed member 60
One end of a lever 74 rotatably attached to the block 10 is engaged with 2. This notch 72
Are formed so as to engage with the lever 74 while allowing the feed member 60 to move forward and backward. The other end of the lever 74 is engaged with a notch 78 of a plate-shaped positioning member 76 which is slidably fitted to the block 10 in a vertical direction perpendicular to the tape feeding direction A. A pair of positioning pins 80 that can be engaged with the feed holes 18 of the carrier tape 20 like the feed pins 64 are provided upright on the positioning member 76.

When the feed member 60 is turned by the cam device, the turning motion is converted into the turning motion of the lever 74, and the turning motion of the lever 74 moves the positioning member 76 in the vertical direction. . Therefore,
When the feed member 60 rotates to the engagement position, the positioning member 76 moves down to the disengagement position where the positioning pin 80 separates from the feed hole 18, and when the feed member 60 rotates to the disengagement position, the positioning member 76 moves. 76 is raised and positioning pin 8
0 moves to the engagement position where it engages with the feed hole 18.

At the front end of the slider 34, a cover 90 having a U-shaped cross section for guiding the taping electronic component 14 by forming a tape guide together with the guide groove 12 is rotatably mounted. The cover 90 is pressed against the taping electronic component 14 by a cover retainer (not shown) urged by a spring. On the upper surface of the cover 90, as shown in FIG.
A slot 92 for pulling out the cover film 22 peeled off from the slot, a slot 94 for allowing the feed pin 64 to project, and allowing the positioning pin 80 to project, and an opening 96 for taking out the electronic component 24 from the carrier tape 20 are provided. I have.

Above the cover 90, a cylindrical suction nozzle 98 is provided.
After the cover film 22 is peeled off from the carrier tape 20, the cartridge 4 is positioned at a component take-out position immediately below the suction nozzle 98, sucked, and taken out. The edge of the opening 96 of the cover 90 on the upstream side with respect to the tape feeding direction A is narrower than the width of the electronic component 24 (the distance in a direction perpendicular to the tape feeding direction A) and the suction nozzle 98. A notch 99 having a large width and a large diameter is formed.

The cover film 22 pulled out from the slot 92 is wound around a fixed roller 100 rotatably attached to the bracket 46 and a free roller 102 attached to the return lever 40,
It is taken up by a take-up reel 104. The free roller 102 is rotatably attached to a bent portion of a U-shaped arm portion 107 protruding from an end surface of the return lever 40 on the upstream side in the tape feeding direction.

A bracket 106, which is the main body of the cover film winding device 6, is fixed to the bracket 46. The take-up reel 104 has a stepped shape fixed to the bracket 106 as shown in FIG. It is attached to the support shaft 108 via a one-way clutch 110. The take-up reel 104 includes a large-diameter disk portion 114 and a disk portion 11.
4 is formed on the surface opposite to the bracket 106, and has a cylindrical shape smaller in diameter than the disk portion 114.
And a cylindrical portion 118 protruding from the surface and having a smaller diameter than the disk portion 114 and having the one-way clutch 110 provided therein. Small diameter portion 12 of support shaft 108
0 so as to be rotatable. Further, ratchet teeth 122 are formed on the outer peripheral portion of the disk portion 114.

The one-way clutch 110 is a take-up reel 1
Although rotation in the winding direction (clockwise direction in FIG. 3) of 04 is permitted, rotation in the reverse direction is prevented, and is configured as shown in FIG. The outer peripheral surface 126 at the intermediate portion in the axial direction of the support shaft 108 gradually increases in diameter as it moves away from the bracket 106 and has a slightly concave curved surface on the axial center side. An outer ring 132 is rotatably fitted via the plurality of rollers 130 held.

The outer peripheral surface 126 is inclined with respect to a straight line parallel to the axis of the support shaft 108 in a plane including the axis of the support shaft 108 and a straight line inclined in a direction perpendicular to the plane. Each of the rollers 130 is arranged in a state of being inclined along the straight line when it is rotated around the axis of the support shaft 108.

The outer ring 132 includes a metal ring 134,
An outer cylinder 136 made of synthetic resin is fixed to the outside of the ring 134, and the inner peripheral surface of the metal ring 134 has a shape corresponding to the outer peripheral surface 126 of the support shaft 108. The outer ring 132 is provided with a spring 140 disposed between an outward flange portion 138 projecting radially outward from the outer peripheral surface of the outer cylinder 136 and the disk portion 114 of the take-up reel 106.
As a result, the roller 130 is urged away from the disk portion 114, whereby the roller 130 is elastically sandwiched between the inner peripheral surface of the outer ring 132 and the outer peripheral surface 126 of the support shaft 108. The spring 140 is formed by projecting projections of opposite directions alternately from both sides of the ring, and the projections abut on the flange 138 and the disk 114 to elastically deform the ring into a waveform. And generate an urging force.

An outer ring guide flange 144 is fixed to the outer cylinder 136 of the outer ring 132. The outer ring guide flange 144 includes a cylindrical portion 146 fitted to the outer cylinder 136, an inward flange portion 148 extending radially inward from an end edge of the cylindrical portion 146 on the side opposite to the disk portion 114, and , Disk part 114
And a pair of protrusions 150 protruding from the end face on the opposite side. Each of these protrusions 150 is provided with an outer ring guide flange 1.
A pair of arc-shaped cutouts 154 of the reel receiver 152 are formed in a partial annular shape having a center angle of 90 degrees with respect to the center line of 44.
From the outside. The reel receiver 152
Fitted and fixed in the opening of the cylindrical portion 118,
The outer ring guide flange 144 and the outer ring 132 are rotatably fitted to the support shaft 108 and rotate together with the take-up reel 104.

In this one-way clutch 110, since the roller 130 is provided to be inclined with respect to the axis of the support shaft 108, the take-up reel 104 is
When the roller 2 is rotated in the winding direction, the roller 13
The outer ring 132 moves rightward in FIG. 1 relative to the support shaft 108 with the rolling of zero. As a result, the gap between the inner peripheral surface of the outer race 132 and the outer peripheral surface 126 of the support shaft 108 increases, and the roller 130, the outer race 132, and the support shaft 1
08 is allowed in the axial direction. Therefore, the roller 130 can roll in the circumferential direction with a slight slip in the axial direction, the outer ring 132 can freely rotate with respect to the support shaft 108, and the rotation of the take-up reel 104 is allowed. You.

On the other hand, when the take-up reel 104 attempts to rotate in the direction opposite to the direction in which the cover film 22 is taken up, the outer ring 132
1 moves to the left in FIG. 1 relative to the support shaft 108, but the movement in this direction is in the direction of reducing the gap between the inner peripheral surface of the outer race 132 and the outer peripheral surface 126 of the support shaft 108. Because of the movement, the roller 130 is only pinched more strongly, cannot actually move relative to each other, and the roller 130 cannot roll, and the rotation of the take-up reel 104 is prevented.

However, when the protrusion 150 is pushed, the outer ring guide flange 1 is pushed.
If the outer ring 44 and the outer ring 132 are moved toward the disk 114 against the urging force of the spring 140, the roller 130 is elastically sandwiched between the inner peripheral surface of the outer ring 132 and the outer peripheral surface 126 of the support shaft 108. As a result, the reverse rotation preventing function of the one-way clutch 110 can be released. The outer ring guide flange 144 constitutes a release device.

A projection 160 having a circular cross section is provided on an end surface of the support shaft 108 opposite to the end on which the disk portion 114 is fitted.
Are provided concentrically with the support shaft 108. This protrusion 16
0 are respectively cut away in parallel with each other and in parallel with the axis of the support shaft 108 so that the engagement surfaces 1 are separated from each other.
62 are formed. An engagement groove 166 extending in a direction perpendicular to the axis of the support shaft 108 is formed at each of two locations diametrically perpendicular to the diameter direction where the two engagement surfaces 162 of the protrusion 160 are formed. Have been. The engagement grooves 166 are formed at positions slightly closer to the take-up reel 104 than the tips of the protrusions 150 of the outer ring guide flange 144 in the axial direction of the support shaft 108.

When the take-up reel 104 is fixed to the bracket 106 by screws 168, the two engagement surfaces 162
The work is performed in a state where the tool is engaged with the take-up reel 104 and the rotation of the take-up reel 104 is prevented. At this time, the take-up reel is in a state where the two engagement surfaces 162 are parallel to the carrier tape feeding direction. By fixing to the bracket 106 while supporting the electronic component 104, the engaging groove 166 is positioned in a direction orthogonal to the tape feeding direction A in a plane including the electronic component supply device 6, and the electronic component supply device 6 is placed on the component supply table. When set horizontally, it can be positioned vertically.

A plate-like member 170 as an operating state maintaining member is fitted in the engaging groove 166. The plate member 170 is
It is longer than the radius of the disk portion 114 of the take-up reel 106, and has a pair of engagement legs 172 formed at one end thereof.
These engagement legs 172 are longer than the radius of the reel receiver 152 and are provided with a gap equal to the distance between the bottom surfaces of the pair of engagement grooves 166 of the shaft 164. In addition, the engaging leg 1
The mutually opposing corners of the pair of engaging legs 172 are slightly cut out to function as guides when the engaging legs 172 are engaged with the engaging grooves 166, and a tip portion of one surface of the pair of engaging legs 172. Are inclined surfaces 174 each of which is inclined toward the other surface toward the tip.

As shown in FIG. 3, a take-up lever 180 is rotatably mounted between the portion of the support shaft 108 where the take-up reel 104 is fitted and the portion fixed to the bracket 106. ing. Winding lever 180 is V
A pair of arms 182 and 184 extending in a letter shape are provided. One arm 182 is opposed to the tip of an arm 107 protruding from the return lever 40.

The other arm 184 has a mounting portion 186 projecting at right angles to the longitudinal direction thereof, and has a claw member 188 rotatably mounted on a pin 190. The claw member 188 is provided with a notch 192 on the side surface on the side of the take-up reel 104 so that interference with the ratchet teeth 122 is avoided, and the mounting portion 186 is provided.
The pawl 196 provided at the tip is urged by the spring 194 disposed between the ratchet teeth 122 so as to mesh with the ratchet teeth 122. The take-up lever 180 is connected to the arm 107 of the return lever 40 by a spring 198 stretched between the arm 184 and the bracket 46.
It is urged to follow.

Therefore, the return lever 40 is
3, the take-up lever 180 is turned counterclockwise in FIG. 3 against the urging force of the spring 198. The pawl member 188 has the ratchet teeth 122
And the take-up reel 104 does not rotate. When the return lever 40 is rotated counterclockwise to retract the slider 34, the take-up lever 180 is urged by the spring 198 to rotate clockwise. The reel 1 is kept engaged with the ratchet teeth 122,
04 is rotated with the rotation of the winding lever 180,
The cover film 22 is wound up by one pitch. Feeding device 3
In this embodiment, the take-up reel 104 is rotated by using the rotation of the return lever 40 for feeding at 0. In this embodiment, the ratchet teeth 122 and the take-up lever 1 are rotated.
80, the claw member 188 and the spring 198 constitute a reel rotation driving device.

Next, the operation will be described. At the time of supplying the electronic components 24 in the electronic component supply device 8 configured as described above, the slider 34 is moved forward and the leading electronic component 24 of the taping electronic components 14 is moved to the component removal position. At this time, the leading electronic component 24 is located in a notch 99 provided at an edge of the opening 96 of the cover 90. The slider 34 is advanced by releasing the rotation of the return lever 40 by the cam device. At this time, the claw member 188 moves while riding over the ratchet teeth 122 with the rotation of the return lever 40. At this time, the pawl member 188 is attached to the take-up reel 104.
However, rotation of the take-up reel 104 in this direction is prevented by the one-way clutch 110 and the cover film 22 is not returned.

The free roller 102 moves rightward in FIG. 3 with the rotation of the return lever 40, so that the cover film 22 located between the fixed roller 100 and the take-up reel 104 is Is returned to. The return amount is set to a length corresponding to a feed length of one pitch of the taping electronic component 14. By the return of the cover film 22, the taping electronic component 14 is sent without the cover film 22 being peeled. .

After the feeding, the suction nozzle 98 is lowered to suck the electronic component 24. Subsequently, the feed pin 64 is disengaged from the feed hole 18 of the carrier tape 20, and the return lever 40 is rotated counterclockwise in FIG. 3 while the positioning pin 80 is engaged with the feed hole 18. , Slider 34, cover 90 and feed member 60
Is retracted. As a result, the cover 90 retreats with respect to the electronic component 24 positioned at the component removal position, the electronic component 24 comes off the notch 99 and is positioned in the opening 96, and the suction nozzle 98 moves the electronic component 24 into the housing recess 16. Can be taken from

When the return lever 40 is rotated counterclockwise in FIG. 3, the free roller 102 moves to the left in FIG.
04, the length of the cover film 22 becomes longer, and the same amount of the cover film 22 that was previously loosened during feeding of the taping electronic component 14 is pulled back. At the same time, the take-up lever 180 is urged by the spring 198 to rotate clockwise in FIG.
4 is rotated in the winding direction, and the cover film 22 is peeled off by one pitch of the taping electronic component 14 and wound.

As the outer diameter of the cover film 22 wound on the take-up reel 104 increases, the cover film 2 is shifted by one pitch of the taping electronic component 14.
The rotation angle of the take-up reel 104 required to take up 2 is reduced. This change in the rotation angle is caused by the arm 107
Is absorbed by a change in the size of the gap between the arm 182 and the arm 182. After the cover film 22 has been peeled off by one pitch, the tension of the cover film 22 becomes larger than the urging force of the spring 198, and the take-up reel 104 and the take-up lever 180 do not rotate. Although a gap is formed between the cover film 22 and the cover film 22, the time becomes earlier as the outer diameter of the cover film 22 increases.

As described above, the take-up reel 104 does not rotate when the taping electronic component 14 is fed, but rotates only when the cover film 22 is wound. When it is necessary to rotate the reel 106 in a direction opposite to the winding direction, the reverse rotation preventing function of the one-way clutch 110 is released.

When there is sufficient working space on both sides of the take-up reel 104 in the direction of the rotation center line, for example, when the electronic component supply device 8 is separated from the component supply table, the outer ring guide flange 144 of the one-way clutch 110 is provided. The operator pushes the protrusion 150 by hand and pushes it into the reel receiver 152. As a result, the outer ring 132 is moved in a direction in which the gap between the inner peripheral surface thereof and the outer peripheral surface 126 of the support shaft 108 becomes larger against the urging force of the spring 140, so that the take-up reel 104 is rotated in the opposite direction. Can be done.

In the case where a large number of electronic component supply devices 8 are arranged on the component supply table with almost no gap in the rotation center line direction of the take-up reel 104, the take-up reel 10 may be used.
When there is no working space on both sides in the direction of the rotation center line of No. 4, the plate-like member 170 shown in FIG. 2 is inserted from the radial direction of the take-up reel 104, and the engaging leg 172 is engaged with the engaging groove 166. . At this time, the inclined surface 174 is inserted toward the side opposite to the protrusion 150, and the tip of the engagement leg 172 is engaged with the engagement groove 1.
When the engagement leg 172 is pressed down strongly, the engagement leg 172 is pushed toward the reel receiver 152 by the action of the inclined surface 174, and is engaged with the engagement groove 166 while pushing the projection 150.
Thereby, the reverse rotation preventing function of the one-way clutch 110 is released.

Since the plate-like member 170 is engaged with the engaging groove 166 formed in the support shaft 108 and extending in a direction perpendicular to the axial direction, it cannot rotate with respect to the support shaft 108.
When the take-up reel 106 is rotated, the take-up reel 106 is not twisted, is kept in a posture at the time of attachment, and the plate-like member 170 can be easily removed. Further, the operator does not need to keep the reverse rotation preventing function of the one-way clutch 110 in the released state by hand, and can perform other work with both hands. In that sense, it is convenient to use the plate member 170 even when the operator can release the reverse rotation prevention function of the one-way clutch 110.

In the above embodiment, the engaging leg 172 of the plate-like member 170 as the operating state maintaining member is
However, as shown in FIG. 6, the protrusions 2 are engaged with the two engagement grooves 166 formed in the projections 2.
An annular engagement groove 202 is provided at 00, two engagement legs 206 of a plate-like member 204 as an operation state maintaining member are engaged, and the reverse rotation preventing function of the one-way clutch 110 is released. Good. Reference numeral 208 denotes an inclined surface for pushing the engaging leg 206 toward the reel receiver 152 by engaging with the engaging groove 202.

As shown in FIG. 7, a protrusion 210 provided on the support shaft is provided with a through hole 212 passing through the axis thereof and penetrating in a diametrical direction. The engaging leg 216 may be inserted. The plate-like member 214 is the disk portion 1 of the take-up reel 104.
14 and an engaging leg 216 protruding from one end of the plate 218. When the engaging leg 216 is inserted into the through hole 212, the plate 2
18 pushes the protrusion 150 to release the reverse rotation preventing function of the one-way clutch 110. Reference numeral 219 denotes a chamfer. When the take-up reel 104 is rotated in a state where the reverse rotation preventing function is released, when the protrusion 150 rotates with the rotation and rotates with respect to the plate-shaped portion 218, The protrusion 150 is provided to facilitate engagement with the plate-like portion 218.

FIG. 8 shows still another embodiment of the present invention. In this embodiment, the reverse rotation preventing function of the one-way clutch 220 is released on the bracket 106 side. Therefore, the direction of the taper of the outer peripheral surface 226 of the support shaft 224 to which the take-up reel 222 is attached is reversed with respect to the outer peripheral surface 126 of the support shaft 108 of the embodiment, and the biasing direction of the outer ring 230 by the spring 228 is also changed. It has been reversed.

The take-up reel 222 has a large-diameter disk portion 232, a cylindrical take-up portion 234, and a bottomed cylindrical portion 236 provided with a one-way clutch 220. Bottom 238 of bottomed cylindrical portion 236
And a reel receiver 240 constituting the one-way clutch 220
Are fitted to and supported by the support shaft 224.
The one-way clutch 220 includes a plurality of rollers 242 and an outer-ring guide flange 244 in the same manner as the one-way clutch 110, in addition to the spring 228, the outer ring 230, and the reel receiver 240, and the winding reel 222 rotates in the winding direction. Although allowed, the reverse rotation is prevented.

The reverse rotation preventing function of the one-way clutch 220 is such that a plate-like member 250 as an operating state maintaining member is inserted between the bracket 106 and the disk portion 228, and the projection 252 of the outer ring guide flange 244 is reel-received. It is released by being pushed into 240 and is kept in the released state. Plate member 25
As shown in FIG. 9, the reference numeral 0 has a plate-like portion 254 and a pair of engaging legs 256 provided at the lower end thereof. A U-shaped engaging portion 258 is provided at an end of the plate-shaped portion 254 opposite to the side on which the engaging leg 256 is provided, and the plate-shaped portion 254 and the engaging leg 256 Shaped member 2
In a state in which the projection 50 is hooked on the bracket 106 at the engagement portion 258, the projection 150 is pushed in, and the projection 50 is formed in a shape and dimensions that do not interfere with the winding lever 180. The surfaces of the lower ends of the pair of engagement legs 256 that face the take-up reel 222 are inclined surfaces 260 that are inclined in such a direction as to move away from the take-up reel 222 downward.

In this embodiment, when releasing the reverse rotation preventing function of the one-way clutch 220 and keeping the release state, the plate-like member 250 is inserted between the bracket 106 and the disk portion 224, and the engagement portion 258 is formed. Is hooked on the bracket 106. At this time, the outer ring guide flange 244 is operated by the action of the inclined surface 260.
Is pushed into the reel receiver 240, the outer ring 230 is moved in a direction to increase the gap between the roller 242 and the support shaft 224, the biting to the support shaft 224 is released, and the winding is performed. The reel 222 can be freely rotated.

When the reverse rotation preventing function of the one-way clutch 220 is released on the bracket 106 side, the projection 160 having the engaging groove 166 is provided on the side of the take-up reel 222 opposite to the bracket 106. Instead of protruding, a tool engagement hole 262 may be provided, and the size of the take-up reel 222 of the cover film take-up device in the rotation axis direction can be reduced, and the arrangement pitch of the electronic component supply device 8 can be reduced. Can be reduced.

Another embodiment of the present invention is shown in FIGS. In this embodiment, the one-way clutch is constituted by a spring clutch 270. A support shaft 274 protrudes from a bracket 272 that is a device main body of the reel winding device. The support shaft 274 has a stepped shape. A take-up lever 278 is rotatably fitted to the large-diameter shaft 276, and a take-up reel 282 is rotatably fitted to the small-diameter shaft 280.

The take-up reel 282 has a large-diameter disk portion 284 on which ratchet teeth are formed, a take-up portion (not shown), and a small-diameter bottomed cylindrical portion 286. Is fitted to the small-diameter shaft portion 280 at a cylindrical portion 287 protruding from the bottom of the shaft. The outer diameter of the cylindrical portion 287 is equal to the diameter of the large-diameter shaft portion 276, and a spring 288 is wound around both. Further, a sleeve 290 is covered on the outside of the spring 288, and one end of the spring 288 is engaged with a notch 292 formed in the sleeve 290, and the other end is engaged with the large-diameter shaft 276. Notch 2 of projecting outward flange 294
96.

The spring 288 always elastically winds the cylindrical portion 287 and the large-diameter shaft portion 276, but when the take-up reel 282 rotates in the direction opposite to the winding direction, the diameter of the spring 288 is reduced. 287 and the large-diameter shaft portion 276 are further strongly wound to prevent the take-up reel 282 from rotating.
On the other hand, when the take-up reel 282 rotates in the take-up direction, the diameter is increased to allow the rotation.

An engagement projection 300 is provided on the outer peripheral surface of the sleeve 290 so as to project therefrom. Spring clutch 270
When the reverse rotation preventing function is released, as shown in FIG. 11, a plate member 302 as an operating state maintaining member is inserted between the take-up reel 282 and the bracket 272, and the lower end of the plate member 302 is A pair of engaging legs 304 provided on the
One of the engagement legs 304 is engaged with the engagement projection 300. By lowering the plate member 302 in this state, the sleeve 290 is rotated, and the spring 288 is rotated.
And the rotation of the take-up reel 282 in the direction opposite to the take-up direction is also allowed.

A U-shaped engaging portion 306 is provided at the upper end of the plate member 302 as shown in FIG. The engaging portion 306 is provided at a position where the engaging portion 306 is engaged with the concave portion 310 formed at the upper end portion of the bracket 272 when the plate-shaped member 302 is lowered until the sleeve 290 is rotated by an appropriate amount to expand the spring 288 appropriately. The engagement portion 306
Of the sleeve 294 is prevented from returning to the pre-rotation position by being urged by the spring 288.

In addition, without departing from the scope of the claims, the present invention can be implemented in various modified and improved forms based on the knowledge of those skilled in the art.

[Brief description of the drawings]

FIG. 1 is a plan sectional view showing a take-up reel and a one-way clutch of a cover film take-up device according to an embodiment of the present invention.

FIG. 2 is a front view showing a state in which a plate-like member for releasing a reverse rotation preventing function of the one-way clutch is attached to a support shaft.

FIG. 3 is a front view showing an electronic component supply device provided with the cover film winding device.

FIG. 4 is a plan view showing a part of the electronic component supply device.

FIG. 5 is a plan view showing a taping electronic component supplied by the electronic component supply device.

FIG. 6 is a view showing another embodiment of the operating state maintaining member for maintaining the one-way clutch release device in a non-operating state.

FIG. 7 is a view showing still another mode of the operation state maintaining member.

FIG. 8 is a plan sectional view showing a take-up reel and a one-way clutch of a cover film take-up device according to another embodiment of the present invention.

FIG. 9 is a front view illustrating a main part of the cover film winding device illustrated in FIG. 8;

FIG. 10 is a side sectional view showing a take-up reel and a one-way clutch of a cover film take-up device according to still another embodiment of the present invention.

11 is a front view showing an operation state maintaining member that releases a reverse rotation preventing function of the one-way clutch shown in FIG. 10;

[Explanation of symbols]

 Reference Signs List 6 cover film winding device 14 taping electronic component 22 cover film 24 electronic component 104 take-up reel 106 bracket 108 support shaft 110 one-way clutch 166 engagement groove 170 plate member 172 engagement leg portion 202 engagement groove 204 plate member 206 Engagement leg 212 Through hole 214 Plate-like member 216 Engagement leg 220 One-way clutch 222 Take-up reel 224 Support shaft 250 Plate-like member 256 Engagement leg 270 Spring clutch 272 Bracket 274 Support shaft 278 Take-up lever 282 Take-up reel 302 Plate member 304 engaging leg

Continuation of the front page (56) References JP-A-61-145073 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65H 41/00 B65H 19/22

Claims (3)

(57) [Claims] An apparatus main body; a support shaft fixed to the apparatus main body so as to be non-rotatable; a take-up reel rotatably mounted on the support shaft and winding a cover film of a taping electronic component; A reel rotation driving device that rotates a reel and winds the cover film by a fixed length, and is provided between the support shaft and the take-up reel, and the take-up reel rotates in a winding direction of the cover film. A one-way clutch that prevents reverse rotation, and a one-way clutch that prevents reverse rotation, wherein the one-way clutch releases a reverse rotation prevention function that prevents the one-way clutch from rotating in the reverse direction. One side of the lever
By setting the clutch to the reverse rotation allowable state,
A cover film winding device for a taping electronic component, further comprising a release device capable of taking an operation state in which the roller can be freely rotated and a non-operation state in which the reverse rotation preventing function is not released. 2. The apparatus according to claim 1, further comprising an operation state maintaining member attached to at least one of the apparatus main body and the support shaft from a radial direction of the support shaft to maintain the release device in the operation state. Cover film winding device. 3. An engagement groove extending in a direction perpendicular to the axis of the support shaft at least at two locations on the outer peripheral surface of a portion where the support shaft protrudes from the one-way clutch in the axial direction. 3. The cover film winding device according to claim 2, wherein the operating state maintaining member is a plate-shaped member having a pair of engaging legs inserted into the engaging groove in a radial direction of the support shaft.