JP2021129031A - Tape feeder - Google Patents

Abstract

To provide a tape feeder capable of reducing supply loss of parts when supplying parts by conveying a tape member narrower than conventional one using a conventional frame.SOLUTION: The tape feeder includes tape guides 41 that are formed protruding toward a frame upper face area 31R on a bottom face of an upper wall 32a of a cover member 32, which is configured to cover at least a part of the frame upper face area 31R from the top. The tape guide 41 regulates the movement of the carrier tape 20 in a width direction, by guiding a side of the carrier tape 20 that is conveyed in the area covered by the cover member 32 of a tape passage 31L to guide the carrier tape 20 so that parts BH stored in the carrier tape 20 pass the parts supply position 13K.SELECTED DRAWING: Figure 11

Description

The present invention relates to a tape feeder used as a component supply unit of a component mounting device for mounting components on a substrate.

The tape feeder, which is known as the parts supply unit of the parts mounting device that mounts the parts picked up by the mounting head on the board, is a tape composed by covering the base tape in which the parts are stored in the pocket for storing the parts with the top tape. The member is conveyed, the top tape is peeled off at a predetermined peeling position, and the component is supplied to the component supply position. The tape feeder is a tape transporting unit that conveys the tape member by rotating the sprocket by engaging the outer peripheral teeth of the sprocket with the frame having the tape passage, which is the passage of the tape member, and the feed hole of the tape member in the tape passage. It has.

In front of the tape feeder (downstream side in the transport direction of the tape member), a horizontal upper wall portion and left and right side wall portions extending downward from the left and right ends of the upper wall portion are provided, and the frame is opened downward to form a frame. A cover member having a channel type (groove shape) extending in the front-rear direction is attached. The tape passage of the tape feeder is an area exposed at the upper part of the frame (frame upper surface area) at the front portion of the frame, and the cover member covers at least a part of the frame upper surface area. When the cover member covers a part of the frame upper surface region from above, the upper wall portion of the cover member is located above the frame upper surface region, and the left and right side wall portions are located outside the left and right side surfaces of the frame. Therefore, both side surfaces of the tape member conveyed in the upper surface region of the frame are guided by the inner surfaces of the left and right side wall portions, whereby the parts housed in the tape member are reliably supplied to the component supply position (for example, the following). See Patent Document 1).

By the way, the tape member used for the tape feeder has a smaller width direction dimension due to the minimization of the component size in recent years, and has a smaller width direction dimension than the conventional one (that is, a narrower tape than the conventional one). There is an increasing need for a tape feeder capable of transporting members and supplying parts. In this case, it can be realized by newly manufacturing a thin frame tape feeder having a tape passage corresponding to a tape member narrower than the conventional one (that is, the width direction dimension is smaller than the conventional one), but it is an existing customer asset. To meet the needs of customers who want to provide tape feeders that can be used (compatible with each other), and to be able to supply parts using tape members that are narrower than before while using the conventional frame as it is. Is desirable from the viewpoint of manufacturing cost and operation of parts supply equipment.

Japanese Unexamined Patent Publication No. 2014-116347

However, when trying to convey a tape member narrower than the conventional one in the tape passage of the conventional frame, the tape member moves greatly in the width direction in the frame upper surface area covered by the cover member and is stored in the tape member. There is a possibility that the parts may not pass through the parts supply position, resulting in a supply loss of the parts.

Therefore, an object of the present invention is to provide a tape feeder capable of reducing the occurrence of supply loss of parts when transporting a tape member narrower than the conventional one and supplying parts while using a conventional frame. And.

The tape feeder of the present invention is a tape feeder that conveys a tape member containing a component and supplies the component to a predetermined component supply position, and is horizontal to a frame having a tape passage which is a passage of the tape member. A cover member provided by covering at least a part of the frame upper surface area, which is an area of the upper wall portion exposed on the upper surface of the frame of the tape passage, and a region of the tape passage covered by the cover member. A tape transport portion that transports the tape member by engaging the outer peripheral teeth of the sprocket with the feed hole of the tape member located and rotating the sprocket, and the upper surface of the frame on the lower surface of the upper wall portion of the cover member. The tape is provided so as to project toward the region, and the movement of the tape member in the width direction is restricted by guiding the side surface of the tape member which is conveyed in the region of the tape passage covered by the cover member. A tape guide for guiding the tape member so that the component housed in the member passes through the component supply position is provided.

According to the present invention, it is possible to reduce the occurrence of supply loss of parts when parts are supplied by using a tape member narrower than the conventional one while using a conventional frame.

Side view of the main part of the component mounting apparatus according to the embodiment of the present invention. Perspective view of the tape feeder included in the component mounting device according to the embodiment of the present invention. Enlarged perspective view of a part of the tape feeder according to the embodiment of the present invention. Perspective view of the carrier tape conveyed by the tape feeder according to the embodiment of the present invention. (A) (b) Enlarged perspective view of a part of the carrier tape conveyed by the tape feeder according to the embodiment of the present invention. An exploded perspective view of a part of the tape feeder according to the embodiment of the present invention. Perspective view of the cover member included in the tape feeder according to the embodiment of the present invention. Top view of a part of the tape feeder according to the embodiment of the present invention. A cross-sectional view of a part of the tape feeder according to the embodiment of the present invention. A cross-sectional view of a part of the tape feeder according to the embodiment of the present invention. A cross-sectional view of a part of the tape feeder according to the embodiment of the present invention. Perspective view of the frame upper surface region of the tape feeder according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a component mounting device 1 according to an embodiment of the present invention. The component mounting device 1 is a device that repeatedly executes the component mounting work of mounting the component BH on the board KB carried in from the upstream process side and carrying it out to the downstream process side. Here, for convenience of explanation, the transport direction of the board KB in the component mounting device 1 (the left-right direction seen from the worker OP) is set to the X-axis direction, and the horizontal direction orthogonal to the X-axis direction (the front-back direction seen from the worker OP). Is the Y-axis direction. Further, the vertical direction is the Z-axis direction.

In FIG. 1, the component mounting device 1 includes a base 11, a board transfer conveyor 12, a tape feeder 13, a mounting head 14, a head moving mechanism 15, a board camera 16, a component camera 17, and a control device 18. The base 11 is installed on the floor surface FL, and the substrate transfer conveyor 12 is provided so as to extend on the base 11 in the X-axis direction. The substrate transfer conveyor 12 carries in the substrate KB sent from the upstream process side, and then positions the substrate KB at a predetermined working position.

In FIG. 1, a feeder carriage DS is connected to an end portion on the front side (worker OP side) of the base 11. A feeder base FB is provided on the upper part of the feeder carriage DS, and the tape feeder 13 is detachably attached to the feeder base FB (see also FIG. 2). A plurality of tape feeders 13 can be attached to the feeder base FB side by side in the X-axis direction. When the feeder carriage DS is connected to the base 11, a plurality of tape feeders 13 attached to the feeder base FB are collectively connected to the base 11.

In FIG. 1, the feeder carriage DS holds a reel RL around which the carrier tape 20 is wound. A reel RL is prepared for each tape feeder 13, and a carrier tape 20 drawn from the reel RL is attached to the corresponding tape feeder 13. The tape feeder 13 conveys the attached carrier tape 20 forward (toward the substrate transfer conveyor 12), and supplies the component BH to a predetermined component supply position 13K (see also FIGS. 2 and 3).

In FIGS. 4 and 5 (a) and 5 (b) (FIGS. 5 (a) and 5 (b) are enlarged views of the region AR in FIG. 4), the carrier tape 20 has a base tape 21 and a top tape 22. It is configured. The base tape 21 is provided with pockets 23 for storing a large number of parts opened upward in a row in the longitudinal direction of the base tape 21 at equal intervals. One component BH is stored in each pocket 23. The top tape 22 is attached to the upper surface of the base tape 21 to prevent the component BH from falling out of the pocket 23. A plurality of feed holes 24 are provided in a row at equal intervals at positions parallel to the row of pockets 23 of the base tape 21.

Here, FIG. 5A shows a flat type carrier tape 20 in which the entire base tape 21 is flat, and FIG. 5B shows an embossed portion 21E in which the base tape 21 projects downward. The embossed type carrier tape 20 which has is shown. Any type of carrier tape 20 may be used, but in the present embodiment, the embossed type carrier tape 20 is used.

In FIG. 1, the mounting head 14 includes a plurality of nozzles 14N extending downward. Each nozzle 14N can move up and down with respect to the mounting head 14 and rotate around the Z axis. The mounting head 14 picks up the component BH supplied by the tape feeder 13 to the component supply position 13K by attracting the component BH to the lower end of each nozzle 14N. The head moving mechanism 15 is composed of, for example, an XY moving mechanism, and moves the mounting head 14 in the horizontal direction and in the vertical direction.

In FIG. 1, the substrate camera 16 is attached to the mounting head 14. The substrate camera 16 has an imaging optical axis directed downward, and by moving together with the mounting head 14, the substrate camera 16 images the substrate KB positioned at the working position by the substrate transfer conveyor 12.

In FIG. 1, the component camera 17 is provided in the area between the substrate transfer conveyor 12 and the tape feeder 13 on the base 11. The component camera 17 has an imaging optical axis directed upward, and when the mounting head 14 having the component BH adsorbed on each of the plurality of nozzles 14N moves so as to pass through the upper region of the component camera 17 in the X-axis direction, each The component BH is imaged from below.

The control device 18 stores various data in addition to the component mounting program. The control device 18 executes the component mounting operation for mounting the component BH on the board KB by operating each part of the component mounting device 1 according to the component mounting program.

In the component mounting work, the board transfer conveyor 12 first operates, receives the board KB sent from the upstream process side, and positions it at the work position. When the board KB is positioned at the working position, the head moving mechanism 15 moves the mounting head 14 above the board KB. As a result, the substrate camera 16 images the substrate KB, and the control device 18 recognizes the substrate KB based on the image captured by the substrate camera 16.

When the control device 18 recognizes the board KB, the mounting head 14 repeatedly executes the mounting turn. The mounting head 14 picks up the component BH supplied by the tape feeder 13 in one mounting turn, and moves so as to pass above the component camera 17 in the X-axis direction to cause the component camera 17 to image the component BH. , The operation of mounting the component BH at the component mounting position defined on the board KB is performed in this order.

The control device 18 performs component recognition based on an image obtained by imaging the component BH by the component camera 17. When the component BH is mounted on the board KB, the mounting head 14 corrects the position of the component BH with respect to the board KB based on the result of the component recognition performed by the control device 18.

When all the component BHs to be mounted on the board KB are mounted by repeatedly executing the above mounting pattern, the board transfer conveyor 12 carries out the board KB to the downstream process side. This completes the component mounting work for each board KB.

In the component mounting device 1 having such a configuration, the configuration of the tape feeder 13 is characteristic in one embodiment, and the description thereof will be described below.

In FIG. 2, the tape feeder 13 includes a frame 31, a cover member 32, a tape transport section 33, and a top tape recovery section 34. The frame 31 has a box shape that extends in the YZ plane as a whole. A protrusion (not shown) protruding downward is formed on the lower surface of the frame 31, and the tape feeder 13 is attached to the feeder base FB by engaging this protrusion with the slot SL provided in the feeder base FB. Can be done.

In FIG. 2, the frame 31 is formed with a tape passage 31L, which is a passage for the carrier tape 20. The tape passage 31L is formed in a groove shape that opens on one side surface of the frame 31 (here, the right side surface as seen from the operator OP).

The tape passage 31L has a width direction dimension W2 (FIG. 2) larger than the width direction dimension W1 (FIG. 4) of the carrier tape 20. This is a tape feeder in which the tape feeder 13 in the present embodiment originally conveys a carrier tape (referred to as "wide carrier tape") having a width direction dimension larger than the width direction dimension W1 to supply parts. This is because the frame of is used (diverted).

In FIG. 2, the tape passage 31L extends in a substantially horizontal direction forward from the rear end portion (end portion on the worker OP side) of the frame 31, and then rises in the front diagonal direction near the center in the front-rear direction of the frame 31. Is extending. The front end portion thereof is exposed on the upper surface of the frame 31. The upper surface of the front portion of the frame 31 is a region where a part of the tape passage 31L is exposed on the upper part of the frame 31. Hereinafter, this region is referred to as “frame upper surface region 31R” (FIG. 6).

In FIGS. 2 and 3, the cover member 32 is provided on the front upper portion of the frame 31 so as to cover at least a part of the frame upper surface region 31R from above. As shown in FIGS. 3, 6 and 7, the cover member 32 includes a horizontal upper wall portion 32a and left and right side wall portions 32b extending downward from both left and right ends of the upper wall portion 32a, and lower. It has a channel-type (groove shape) shape that is open to the front and extends in the front-rear direction (Y-axis direction) of the frame 31.

In FIGS. 6, 7 and 8, the cover member 32 is provided with a component outlet 32G for taking out the component BH from the pocket 23 of the carrier tape 20 located at the component supply position 13K. As shown in FIGS. 3 and 6, the front end of the cover member 32 is pivotally connected to the upper part of the frame 31 on the front end side by the pivot pin 32P. The cover member 32 can be slightly swung in the direction of raising the rear end side with respect to the frame upper surface region 31R with the pivot pin 32P as a fulcrum.

In FIGS. 3 and 9 (FIG. 9 is a cross-sectional view taken along the line VV in FIG. 8), the upper wall portion 32a of the cover member 32 is in a state where the cover member 32 covers a part of the frame upper surface region 31R from above. The lower surface 32K of the frame is located above the frame upper surface region 31R. Further, the left and right side wall portions 32b are located outside the left and right side surfaces of the frame 31. The distance between the left and right side wall portions 32b is the width direction dimension W2 corresponding to the wide carrier tape.

In FIG. 9, a gap CL having substantially the same thickness as the carrier tape 20 is formed between the lower surface 32K of the upper wall portion 32a of the cover member 32 and the frame upper surface region 31R. The space in which the gap CL is formed constitutes a part of the tape passage 31L, and the carrier tape 20 passing through this space is prevented from rising from the frame upper surface region 31R by the cover member 32.

When attaching the carrier tape 20 to the frame 31, the operator OP first inserts the leading portion of the carrier tape 20 into the space between the frame upper surface region 31R and the cover member 32 from the rear of the cover member 32. Then, a portion rearward from the inserted portion is inserted into the tape passage 31L formed in the frame 31 from the opening side (right side of the frame 31).

Here, when the leading portion of the carrier tape 20 is inserted into the space between the frame upper surface region 31R and the cover member 32, the rear end side of the cover member 32 is floated with respect to the frame upper surface region 31R. As a result, the gap CL at the rear portion of the cover member 32 can be temporarily increased, and the operator OP can easily insert the tip end portion of the carrier tape 20 into the space between the frame upper surface region 31R and the cover member 32.

In FIG. 2, the tape transport portion 33 includes a sprocket 33A provided on the frame 31, a drive motor 33B, and a transmission gear portion 33C. The sprocket 33A is rotatably attached to the upper part of the frame 31 on the front end side around the X axis. Of the outer peripheral teeth 33G (FIG. 3) of the sprocket 33A, those located directly above the center of rotation of the sprocket 33A (referred to as the uppermost outer peripheral teeth 33G) project upward from the frame upper surface region 31R (FIG. 6). And FIG. 9).

When the drive motor 33B is operated and the sprocket 33A is rotated via the transmission gear portion 33C (arrow A shown in FIGS. 2 and 3), the uppermost outer peripheral teeth 33G of the sprocket 33A move forward. The uppermost outer peripheral teeth 33G of the sprocket 33A are engaged with the feed hole 24 of the carrier tape 20 inserted between the frame upper surface region 31R and the cover member 32 (FIG. 9), and the sprocket 33A is rotationally driven. When the uppermost outer peripheral tooth 33G is moved forward, the entire carrier tape 20 is pulled forward. As a result, the carrier tape 20 is conveyed forward in the tape passage 31L (arrow B shown in FIGS. 2 and 3).

As described above, in the present embodiment, the tape transport portion 33 engages the outermost peripheral teeth 33G of the uppermost portion of the sprocket 33A with the feed hole 24 of the carrier tape 20 located in the region of the tape passage 31L covered by the cover member 32. The carrier tape 20 is conveyed by rotating the sprocket 33A.

In FIGS. 3, 6, 7, and 8, a portion of the cover member 32 located directly above the center of rotation of the sprocket 33A is provided with a relief opening 32M extending in the front-rear direction (Y-axis direction) of the frame. The uppermost outer peripheral tooth 33G of the sprocket 33A passes through the escape opening 32M (FIG. 9). Therefore, the sprocket 33A can rotate the outer peripheral teeth 33G without interfering with the cover member 32.

In FIG. 2, the top tape collecting portion 34 is provided at a position closer to the rear of the upper portion of the frame 31, and has a pair of feed rollers 34a and a tension applying portion 34b. As shown in FIG. 10, the top tape 22 of the carrier tape 20 is formed from the base tape 21 with the trailing edge (edge on the worker OP side) of the component outlet 32G of the cover member 32 as the peeling position 32H (see also FIG. 7). It is peeled off, folded back (see also FIGS. 2 and 3), and sandwiched between a pair of feed rollers 34a. An appropriate tension is applied to the top tape 22 between the peeling position 32H and the feed roller 34a by the tension applying portion 34b.

When the sprocket 33A rotates and the carrier tape 20 is conveyed forward, the pair of feed rollers 34a rotate in synchronization with the rotation of the sprocket 33A. As a result, the top tape 22 is pulled backward by the pair of feed rollers 34a (arrow C shown in FIGS. 2 and 3), and is fed into the top tape accommodating space 31K (FIG. 2) formed at the rear of the frame. It will be recovered.

The carrier tape 20 in the tape passage 31L is conveyed forward by the rotation of the sprocket 33A, so that each pocket 23 formed in the base tape 21 is located immediately in front of the peeling position 32H. 13K) will be reached in sequence. Since the top tape 22 has already been peeled off when the pocket 23 reaches the component supply position 13K, the mounting head 14 can pick up the component BH (from the component outlet 32G) at the component supply position 13K. (Fig. 10). The carrier tape 20 (base tape 21) that has passed through the cover member 32 is discharged to the outside from the front end of the frame 31 (FIG. 3).

Here, as shown in FIGS. 6 and 7, a tape guide 41 is provided on the lower surface of the upper wall portion 32a of the cover member 32 so as to project toward the frame upper surface region 31R. Here, in the tape guide 41, a plurality of convex portions 41T provided on the lower surface of the upper wall portion 32a of the cover member 32 so as to project toward the frame upper surface region 31R (that is, downward) are carriers in the frame upper surface region 31R. The tape 20 is connected in the transport direction.

The tape guide 41 regulates the movement of the carrier tape 20 in the width direction by guiding the side surface of the carrier tape 20 conveyed in the area of the tape passage 31L covered by the cover member 32 (FIG. 11), and the carrier. The carrier tape 20 is provided so as to guide the component BH housed in the tape 20 so as to pass through the component supply position 13K. Therefore, in the tape feeder 13 of the present embodiment, the component BH housed in the carrier tape 20 conveyed in the frame upper surface region 31R always passes through the component supply position 13K.

As described above, the tape feeder 13 in the present embodiment includes a tape guide 41 provided on the lower surface of the upper wall portion 32a of the cover member 32 so as to project toward the frame upper surface region 31R, and the tape guide 41 is a tape. By guiding the side surface of the carrier tape 20 conveyed in the area of the passage 31L covered by the cover member 32, the movement of the carrier tape 20 in the width direction is restricted, and the component BH housed in the carrier tape 20 supplies the component. The carrier tape 20 is guided so as to pass through the position 13K.

Here, the tape guide 41 is provided at a position of guiding the side surface of the carrier tape 20 on the side opposite to the side on which the feed hole 24 is formed (left side when viewed from the operator OP) (right side). Has been done. The left side surface of the left and right side surfaces of the carrier tape 20 is restricted from moving in the width direction by the outer peripheral teeth 33G of the sprocket 33A via the feed hole 24, and the right side surface of the carrier tape 20 is guided by the tape guide 41. As a result, the carrier tape 20 is prevented from moving significantly in the width direction, and the pocket 23 (that is, the component BH) can be reliably passed through the component supply position 13K.

In FIGS. 6, 11 and 12, the frame upper surface region 31R is formed with a relief portion 42 that avoids interference with the tape guide 41 that is provided so as to project from the upper wall portion 32a of the cover member 32. Therefore, the height of the tape guide 41 can be made higher than the dimension between the upper surface region 31R of the frame and the lower surface 32K of the upper wall portion 32a of the cover member 32 (FIG. 9), and the side surface of the carrier tape 20 is stabilized. Can be guided in a targeted manner.

In FIG. 12, the embossed passage groove 43 is provided in the frame upper surface region 31R extending in the Y-axis direction (that is, the transport direction of the carrier tape 20). The embossed passage groove 43 is provided to avoid interference with the embossed portion 21E (FIG. 9) protruding from the lower surface of the carrier tape 20. Therefore, even when the carrier tape 20 is an embossed type, the carrier tape 20 does not rise from the frame upper surface region 31R due to the embossed portion 21E, and the side surface (right side surface) of the carrier tape 20 is secured by the tape guide 41. Can be guided to.

As described above, the tape feeder 13 in the present embodiment is directed toward the frame upper surface region 31R on the lower surface of the upper wall portion 32a of the cover member 32 provided by covering at least a part of the frame upper surface region 31R from above. A tape guide 41 is provided so as to project, and the tape guide 41 guides the side surface of the carrier tape 20 which is conveyed in the area of the tape passage 31L covered by the cover member 32 in the width direction of the carrier tape 20. The carrier tape 20 is guided so that the component BH housed in the carrier tape 20 passes through the component supply position 13K. Therefore, according to the tape feeder 13 in the present embodiment, the component BH housed in the carrier tape 20 conveyed in the frame upper surface region 31R always passes through the component supply position 13K. Therefore, according to the tape feeder 13 in the present embodiment, the occurrence of supply loss of the component BH is reduced when the carrier tape 20 narrower than the conventional one is conveyed and the component is supplied while using the conventional frame 31. can do.

Although the embodiments of the present invention have been described so far, the present invention is not limited to the above-mentioned ones, and various modifications and the like are possible. For example, in the above-described embodiment, the tape guide 41 has a configuration in which a plurality of convex portions 41T are connected in the transport direction of the carrier tape 20 in the frame upper surface region 31R, but the tape guide 41 does not necessarily have a plurality of convex portions. It does not have to be composed of the shaped portion 41T, but may be composed of one convex portion 41T. Further, it is not always necessary to provide a plurality of relief portions 42, and it is sufficient that at least a plurality of relief portions 42 are provided at positions where interference with the convex portion 41T can be avoided.

Provided is a tape feeder capable of reducing the occurrence of supply loss of parts when a tape member narrower than the conventional one is conveyed and parts are supplied while using a conventional frame.

13 Tape feeder 13K Parts supply position 20 Carrier tape (tape member)
21E Embossed part 24 Feed hole 31 Frame 31L Tape passage 31R Frame upper surface area 32 Cover member 33 Tape transport part 33A Sprocket 33G Outer tooth 41 Tape guide 41T Convex part 42 Relief part 43 Embossed passage groove BH parts

Claims (5)

A tape feeder that conveys a tape member containing parts and supplies the parts to a predetermined part supply position.
A frame having a tape passage, which is a passage of the tape member,
A cover member provided by covering at least a part of the frame upper surface area, which is a horizontal upper wall portion exposed on the upper surface of the frame of the tape passage, from above.
A tape transporting portion that transports the tape member by engaging the outer peripheral teeth of the sprocket with the feed hole of the tape member located in the region of the tape passage covered by the cover member and rotating the sprocket.
The cover member is provided on the lower surface of the upper wall portion of the cover member so as to project toward the upper surface region of the frame, and the side surface of the tape member is guided by guiding the region of the tape passage covered by the cover member. A tape feeder provided with a tape guide that regulates the movement of the tape member in the width direction and guides the tape member so that the parts housed in the tape member pass through the component supply position. The tape feeder according to claim 1, wherein the tape guide guides a side surface of both side surfaces of the tape member opposite to the side on which the feed hole is formed. The tape feeder according to claim 1 or 2, wherein a relief portion for avoiding interference with the tape guide is formed in the frame upper surface region. The tape guide is a claim in which a plurality of convex portions provided on the lower surface of the upper wall portion of the cover member so as to project toward the frame upper surface region are connected in the transport direction of the tape member in the frame upper surface region. Item 4. The tape feeder according to any one of Items 1 to 3. When the tape member is an embossed type having an embossed portion protruding from the lower surface, an embossed passage groove that avoids interference with the embossed portion when the tape member is conveyed in the frame upper surface region is provided in the frame upper surface region. The tape feeder according to any one of claims 1 to 4 provided.

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