Tape peeling device and tape feeder

Abstract

To provide a tape peeling device capable of suppressing generation of shavings of a cover tape.SOLUTION: A tape peeling device includes a peeling blade that is disposed in a tape passage of a tape feeder that feeds, in a predetermined feeding direction, a carrier tape configured to include a base tape having a plurality of cavities for accommodating components and a cover tape bonded to the base tape by two adhesive portions extending in a tape length direction with the plurality of cavities interposed therebetween, and peels the cover tape from the base tape. With the peeling blade, a portion close to a tip end of an upper surface continuous to a tip end portion on an upstream side in a feeding direction is formed into a smooth curved surface having an upward convex shape.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present specification relates to the technical field of a tape feeder that supplies components using a carrier tape. [Background technology]

[0002] The technology of mass-producing finished circuit boards by performing substrate-to-substrate operations on substrates on which circuit patterns are formed is becoming widespread. A typical example of a substrate-to-substrate operation machine is a component placement machine that places components on a substrate. Many component placement machines are equipped with tape feeders that supply components using carrier tape. Tape feeders can be broadly classified into full-peel type, which peels off two adhesive lines between the base tape and cover tape that make up the carrier tape, and half-peel type, which peels off only one adhesive line and folds the cover tape. One example of technology related to this type of half-peel type tape feeder is disclosed in Patent Document 1.

[0003] Patent document 1 discloses a tape feeder that includes a feeder body having a component supply section, a drive device that transports the carrier tape, a tape guide provided in the component supply section, a peeling device provided in the tape guide that keeps one edge of the cover tape in a state where it is adhered to the other side in the width direction of the base tape, a bending device provided in the tape guide that folds the peeled cover tape to one side, and a regulating section provided in the tape guide that maintains the folded state of the cover tape. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-53334 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the technical example of Patent Document 1, depending on the shape of the tape guide or peeling device, there is a possibility that the cover tape may be damaged during peeling. In particular, the peeling device has a peeling blade that peels the adhesive portion between the cover tape and the base tape, and the peeling blade may scrape the underside of the cover tape, generating chips. Furthermore, in the case of cover tapes coated with an antistatic agent, the antistatic agent is easily scraped off, generating chips. These chips may gather and then move, adhering to components or becoming trapped in the tape path, potentially causing defects.

[0006] Therefore, an object of the present specification is to provide a tape peeling device and a tape feeder that suppress the generation of chips of the cover tape. [Means for solving the problem]

[0007] This specification discloses a tape peeling device that is arranged in a tape passage of a tape feeder that feeds a carrier tape in a predetermined feed direction, the carrier tape comprising a base tape having a plurality of cavities for accommodating components, and a cover tape adhered to the base tape by two adhesive strips extending in the tape length direction, sandwiching the plurality of cavities, and that is equipped with a peeling blade that peels the cover tape from the base tape, wherein the portion of the upper surface of the peeling blade near the tip that is connected to the tip on the upstream side in the feed direction is formed into a smooth curved surface with an upward convex shape.

[0008] This specification also discloses a tape feeder including the tape separating device, the tape passage, and a tape feeding mechanism that feeds the carrier tape in the feeding direction.

[0009] This specification discloses the following technical ideas: in claim 3 as originally filed, changing "the tape peeling device according to claim 1" to "the tape peeling device according to claim 1 or 2"; in claim 5 as originally filed, changing "the tape peeling device according to claim 1" to "the tape peeling device according to claim 1 or 2"; in claim 7 as originally filed, changing "the tape peeling device according to claim 1" to "the tape peeling device according to any one of claims 1 to 6"; in claim 9 as originally filed, changing "the tape peeling device according to any one of claims 1 to 7" to "the tape peeling device according to any one of claims 1 to 8"; in claim 10 as originally filed, changing "the tape peeling device according to claim 1" to "the tape peeling device according to any one of claims 1 to 9"; and in claim 11 as originally filed, changing "the tape peeling device according to claim 1" to "the tape peeling device according to any one of claims 1 to 10". This specification also discloses the technical idea of ​​changing claim 15, originally filed, from "a tape feeder equipped with a tape peeling device as set forth in any one of claims 1-7" to "a tape feeder equipped with a tape peeling device as set forth in any one of claims 1-14." [Effects of the Invention]

[0010] According to the disclosed configuration, the portion of the upper surface of the peeling blade near the tip, which is connected to the tip, is formed into a smooth curved surface with an upward convex shape, and the peeling blade makes surface contact with the cover tape without contacting the edge portion, thereby suppressing the generation of chips of the cover tape. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a side view showing the overall configuration of a tape feeder including a tape separating device according to an embodiment. [Figure 2] 1 is a plan view schematically illustrating the configuration of a tape separating device and explaining a separating operation. FIG. [Figure 3] FIG. 3 is a plan view showing only the carrier tape in FIG. 2. [Figure 4]10 is a side cross-sectional view showing the detailed shape of the tip portion of the stripping blade and explaining its function. FIG. [Figure 5] FIG. 10 is a side cross-sectional view showing a detailed shape of the vicinity of the tip of the stripping blade in the first modified embodiment. [Figure 6] FIG. 10 is a side cross-sectional view showing the detailed shape of the vicinity of the tip of the stripping blade in the second modified embodiment and explaining its action. [Figure 7] 10 is a side cross-sectional view showing the shape of a stripping blade of the prior art and explaining its function. FIG. [Figure 8] 10 is a side cross-sectional view illustrating the operation of a configuration in which the distance between the downstream end of the tape guide and the tip of the stripping blade is excessively large. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] 1. Overall configuration of tape feeder 1 First, the overall configuration of a tape feeder 1 equipped with a tape separating device 4 of an embodiment will be described with reference to Fig. 1. Tape feeder 1 is detachably mounted on a component mounting machine and supplies components using a carrier tape 8. The direction from left to right in Fig. 1 is the feed direction of carrier tape 8, with the left side being the upstream side and the right side being the downstream side. Tape feeder 1 includes a feeder main body 2, a tape passage 24, a tape feeding mechanism 3, a tape separating device 4, a tape guide 5, and a feeder control unit 6.

[0013] The feeder body 2 forms the outer shape of the tape feeder 1, which is thin in the width direction. The feeder body 2 includes a removable rail 21, a reel housing frame 231, a housing plate 232, an opening / closing plate 233, a tape passage 24, and a locking mechanism 25. The removable rail 21 is provided on the bottom surface of the feeder body 2 and extends in the feed direction of the carrier tape 8. It is used for mounting to a component mounting machine. An upper positioning pin 221, a connector 222, and a lower positioning pin 223 are provided on the downstream end surface of the feeder body 2, in this order from top to bottom. The upper positioning pin 221 and the lower positioning pin 223 engage with positioning holes provided on the main body of the component mounting machine to position the tape feeder 1. When the tape feeder 1 is positioned, the connector 222 automatically engages with a receiving connector provided on the component mounting machine. This allows power to be supplied to the tape feeder 1, and the feeder control unit 6 is connected for communication with the control device of the component mounting machine.

[0014] The reel housing frame 231 is made up of multiple frame members that form a large circular internal space roughly in the center of the feeder main body 2. The reel housing frame 231 rotatably houses a reel RL in the internal space. A housing plate 232 is attached near the bottom of the reel housing frame 231. The housing plate 232 prevents the reel RL housed in the reel housing frame 231 from falling out. An opening / closing plate 233 is attached above the middle height of the reel housing frame 231. The opening / closing plate 233 is swingably supported by the feeder main body 2 at two support portions 234 on the upper front and rear sides. Opening the opening / closing plate 233 enables replacement of the reel RL. A carrier tape 8 containing multiple components is wound around the reel RL.

[0015] The tape path 24 forms a moving path that feeds the carrier tape 8 in a predetermined feed direction. The tape path 24 is formed, for example, in a cylindrical shape with a rectangular cross section using a bottom surface, two side surfaces, and a top surface, and part of the cylindrical shape may be omitted. The tape path 24 starts at a position close to the reel RL, extends diagonally upward in the downstream direction, extends roughly horizontally in the downstream direction from the middle, and ends at the top of the downstream end of the feeder body 2. A position close to the end of the tape path 24 is a predetermined component supply position 242.

[0016] A tape guide 5 that forms the upper surface of the tape path is detachably provided downstream of the tape path 24. The tape guide 5 is formed to include a component supply position 242. A tape separation device 4 is provided upstream of the component supply position 242 on the tape guide 5. The tape path 24 guides the carrier tape 8 drawn out from the reel RL to the tape separation device 4, and also guides at least the base tape 82 (described later) from the tape separation device 4 to the component supply position 242. The tape guide 5 and the tape separation device 4 will be described in detail later.

[0017] Lock mechanism 25 is disposed at the upper part of the upstream side of feeder main body 2. Lock mechanism 25 is composed of lock pin 251, lock operation member 252, lock sensor 253, and the like. Lock pin 251 is a cylindrical member that is held by feeder main body 2 so that it can move up and down. Lock pin 251 is normally pushed up by a biasing spring (not shown) to enter a locked state, restricting the operation of removing tape feeder 1. Lock operation member 252 is a Y-shaped member with a swing fulcrum in the center. When automatically or manually driven to swing, lock operation member 252 drives lock pin 251 downward to release the locked state and allow the operation of removing tape feeder 1. Lock sensor 253 detects the position of lock pin 251, i.e., whether it is in a locked state, and outputs the result to feeder control unit 6.

[0018] The tape feeding mechanism 3 feeds the carrier tape 8 at a fixed pitch and supplies components sequentially at the component supply position 242. The tape feeding mechanism 3 is composed of a sprocket, a servo motor, a gear mechanism, and other components (not shown). The sprocket is disposed below the tape path 24 and is rotatably supported by the feeder body 2. The sprocket teeth protrude from grooves formed in the bottom surface of the tape path 24 and fit into feed holes 84 (described below) in the carrier tape 8. The sprocket is driven by the servo motor via a gear mechanism and can be switched between forward and reverse rotation.

[0019] The feeder control unit 6 is disposed at the bottom of the upstream side of the feeder main body 2, but its location is not limited. The feeder control unit 6 is configured using an LSI component with a built-in CPU. The feeder control unit 6 is connected to the control device of the component mounting machine via a connector 222 for communication. The feeder control unit 6 controls the tape feeding mechanism 3 in accordance with commands from the control device, and also monitors the state of the locking mechanism 25.

[0020] 2. Carrier Tape 8 Configuration Next, the configuration of the carrier tape 8 used in the tape feeder 1 will be described with reference to Figures 3 and 4. In Figure 3, the cover tape 81 that constitutes the carrier tape 8 is shown with diagonal hatching for convenience. Also, the two adhesive lines (85, 86) and the component 89 are shown painted black for convenience. The carrier tape 8 consists of the cover tape 81 and the base tape 82.

[0021] The base tape 82 is made of paper or plastic. A number of rectangular cavities 83 are formed in the base tape 82 at equal intervals along the length of the tape, from the center of the tape width toward one side edge 821. Each cavity 83 accommodates a component 89. A number of feed holes 84 are formed in the base tape 82 at equal intervals along the length of the tape, from the center of the tape width toward one side edge 822.

[0022] The cover tape 81 is adhered to the upper surface of the base tape 82. The cover tape 81 is formed using a transparent plastic film so that the components 89 inside the cavity 83 can be seen visually or with an optical camera. A first adhesive portion 85 extending in the tape length direction is provided between the cavity 83 and one side edge 821 of the base tape 82. Furthermore, a second adhesive portion 86 extending in the tape length direction is provided between the cavity 83 and the feed hole 84 of the base tape 82.

[0023] That is, the two adhesive lines (85, 86) extend in the tape length direction, sandwiching the multiple cavities 83. The two adhesive lines (85, 86) releasably adhere the cover tape 81 to the base tape 82. The cover tape 81 has a tape width dimension smaller than that of the base tape 82, and covers the cavities 83 but does not cover the feed holes 84. There are multiple types of carrier tape 8 that differ in tape width and tape thickness dimensions, and they can be used for various sizes of components 89.

[0024] For example, in the carrier tape 8 shown in Figure 3, which has a width Tw of 8 mm, the width Tw of the base tape 82 is also 8 mm. The width Bw of the two adhesive portions (85, 86) is approximately 0.5 mm. The distance D1 between one side edge 821 of the base tape 82 and the edge of the first adhesive portion 85 closer to the center is approximately 2.1 mm. The distance D2 between one side edge 821 and the edge of the second adhesive portion 86 closer to the center is approximately 3.5 mm.

[0025] Furthermore, the carrier tape 8, which has a width Tw of 8 mm, accommodates a component 89, as illustrated in Figures 3 and 4, in the cavity 83. The component 89 has a length Lp of 0.4 mm, a width Wp of 0.2 mm, and a height Hp of 0.2 mm. Meanwhile, the base tape 82 has a thickness Tb of 0.3 mm. The depth Dc of the cavity 83 is approximately equal to or slightly larger than the height Hp (=0.2 mm) of the component 89. The thickness Tc of the cover tape 81 is in the range of 0.05 mm to 0.07 mm. In Figures 4 to 8, the thickness Tc of the cover tape 81 is depicted as 0.05 mm.

[0026] Some cover tapes 81 have an antistatic agent applied to the surface facing the cavity 83. The antistatic agent prevents components 89 from adhering to the cover tape 81 due to static electricity. The antistatic agent is applied mainly to the cover tape 81 of the carrier tape 8 that accommodates small components 89 (for example, components 89 with external dimensions of 0.6 × 0.3 × 0.3 mm or less).

[0027] 3. Configuration of the tape guide 5 and tape peeling device 4 Next, the configurations of the tape guide 5 and the tape separating device 4 will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the tape guide 5 is detachably provided at the upper part of the feeder main body 2 near the downstream side. The tape guide 5 forms the upper surface of the tape path 24 that guides the carrier tape 8 in a predetermined feeding direction. As shown in FIG. 2, the tape guide 5 is composed of a first ceiling plate 51, a second ceiling plate 54, a side plate 56, and a side plate 57. The side plates 56 and 57 are spaced apart from each other and extend parallel to the feeding direction of the carrier tape 8. The side plates 56 and 57 are detachably held by the feeder main body 2.

[0028] The first ceiling plate 51 and the second ceiling plate 54 are flat members arranged parallel to and spaced apart from the bottom surface of the tape path 24. The distance between the first ceiling plate 51 and the second ceiling plate 54 and the bottom surface of the tape path 24 is slightly larger than the thickness of the carrier tape 8. The carrier tape 8 moves through the tape path 24 formed by this distance. The upstream portion of the first ceiling plate 51 is connected to the side plates 56 and 57 and occupies approximately the entire width of the feeder body 2. The downstream portion of the first ceiling plate 51 has a reduced width and is arranged closer to one of the side plates 56. The first ceiling plate 51 has cutout windows (52, 53) formed therein that allow the feed holes 84 of the carrier tape 8 to be visually observed.

[0029] The tape guide 5 is biased downward by a biasing spring (not shown). This causes the first ceiling plate 51 to press the carrier tape 8 against the bottom surface of the tape path 24. Therefore, the sprockets of the tape feeding mechanism 3 are securely fitted into the feeding holes 84 of the carrier tape 8. Furthermore, the relative height of the carrier tape 8 with respect to the tape peeling device 4 is stabilized. The second ceiling plate 54 is connected to the other side plate 57 downstream of the first ceiling plate 51. The second ceiling plate 54 is cut out at a portion corresponding to the component supply position 242 to form an opening. An opening 55 extending in the feeding direction is formed between the first ceiling plate 51 and the second ceiling plate 54.

[0030] The tape peeling device 4 peels the cover tape 81 from the base tape 82. The tape peeling device 4 is composed of a peeling blade 41 and a tape folding member 45 shown in FIG. 2. The peeling blade 41 is connected to the other side panel 57 inside an opening 55 upstream of the second ceiling panel 54. The peeling blade 41 has a tip portion 42 and a cutting edge 43. The tip portion 42 is located at the upstream end of the peeling blade 41 and faces upstream. The tip portion 42 is located between the two adhesive portions (85, 86) in the tape width direction. The tip portion 42 is formed thin in the vertical direction, which allows it to easily enter between the base tape 82 and the cover tape 81.

[0031] The blade tip 43 extends from the tip 42 to the position of one of the adhesive portions 85. The blade tip 43 peels off one of the adhesive portions 85, partially peeling the cover tape 81 from the base tape 82. The blade tip 43 does not peel off the other of the adhesive portions 86. The blade tip 43 is formed to extend diagonally downstream relative to the feed direction and is thin in the vertical direction, which makes it possible to easily peel off one of the adhesive portions 85. The height position of the peeling blade 41 can be adjusted by the action of the aforementioned biasing spring, and the height of the tip 42 and the blade tip 43 relative to the carrier tape 8 is optimized and stabilized.

[0032] The tape folding member 45 is formed so as to be continuous with the downstream side of the peeling blade 41. The tape folding member 45 is arranged above and parallel to the second ceiling plate 54 at a distance. The tape folding member 45 gradually widens in the downstream direction away from the peeling blade 41. The tape folding member 45 has a widened portion with a side edge 46 for folding back the cover tape 81 to open the cavity 83. The downstream portion of the tape folding member 45 is connected to the side plate 56 and the side plate 57, and occupies substantially the entire width of the feeder body 2. The tape folding member 45 has a portion corresponding to the component supply position 242 cut out to open it.

[0033] 4. Peeling operation of tape peeling device 4 Next, the peeling operation of the tape peeling device 4 will be described with reference to Figures 2 and 3. When the carrier tape 8 is fed, the tape peeling device 4 peels off one adhesive portion 85, and folds back the cover tape 81 with the other adhesive portion 86 still attached, thereby opening the cavity 83.

[0034] More specifically, when the tape feeding mechanism 3 operates to feed the carrier tape 8 in the feed direction, the leading edge of the carrier tape 8 faces the peeling blade 41. As the carrier tape 8 is further fed and its leading edge reaches the peeling blade 41, the leading edge 42 first enters between the base tape 82 and the cover tape 81. As the carrier tape 8 is further fed, the leading edge 42 advances relatively between the base tape 82 and the cover tape 81. The blade tip 43 also obliquely abuts the advancing adhesive portion 85 and cuts it open, partially peeling the cover tape 81 from the base tape 82. As a result, the cover tape 81 is fed downstream in a partially peeled state, with one adhesive portion 85 peeled off and the other adhesive portion 86 adhered.

[0035] As shown in FIG. 2, the partially peeled cover tape 81 passes above the peeling blade 41. As the cover tape 81 is fed downstream, it moves along the side of the peeling blade 41 and rises above the other adhesive portion 86. The cover tape 81 then folds back along the side edge 46 of the tape folding member 45 toward one of the side plates 56. The cover tape 81 then turns back 180 degrees at the component supply position 242. This opens the cavity 83, allowing the component 89 to be fed. After the component 89 is removed, the carrier tape 8 is fed downstream with the cover tape 81 still adhered to the base tape 82 by the other adhesive portion 86.

[0036] As shown in FIG. 1, the carrier tape 8 that has passed the component supply position 242 is bent downward by approximately 90 degrees at the downstream end of the tape path 24, discharged to the outside, and sent into the component mounting machine. The component mounting machine is equipped with a tape cutter and a collection box (not shown). The tape cutter operates at a predetermined operating time to cut the carrier tape 8. The cut carrier tape 8 falls toward the collection box.

[0037] 5. Detailed shape and function of the tip 42 of the peeling blade 41 Next, the detailed shape of the vicinity of the tip 42 of the peeling blade 41 will be described with reference to FIG. 4. The following description is based on prototypes, experiments, and considerations conducted on a carrier tape 8 having a width Tw of 8 mm. In FIG. 4, the tip 42 of the peeling blade 41 is conveniently indicated by a black circle for easy viewing. The height hs of the tip 42 is 0.10 mm or more and 0.15 mm or less from the top surface of the base tape 82. The tip-side portion 71 of the upper surface of the peeling blade 41, which is continuous with the tip 42, is formed into a smoothly curved surface with an upward convex shape. In this embodiment, the tip-side portion 71 has a cross-sectional shape that is an arc in a vertical cross section in the feed direction. The radius r1 of the arc is 0.07 mm or more.

[0038] The trailing portion 72, located downstream of the leading edge portion 71 on the upper surface, smoothly continues from the leading edge portion 71. The trailing portion 72 is formed so as to gradually move away from the upper surface of the base tape 82 as it advances downstream; in other words, it is formed in a sloped shape that gradually becomes higher. The trailing portion 72 does not need to be an inclined plane, and may have a shape that includes a slight bend or inflection.

[0039] The peeling blade 41 is manufactured by metal powder injection molding (MIM) using a mold. Therefore, the surface of the peeling blade 41 is somewhat rough. For this reason, it is preferable to apply a smoothing surface treatment to at least a portion of the upper surface of the peeling blade 41 to reduce the risk of damaging the cover tape 81 that comes into contact with it. Furthermore, it is preferable to use barrel polishing as a surface treatment method. However, according to the results of experiments conducted using prototypes with detailed shapes near the tip 42 described above, it has been found that the effect of suppressing the generation of shavings of the cover tape 81 (described below) can be achieved even without applying a surface treatment.

[0040] The downstream end 58 of the first ceiling plate 51 of the tape guide 5 is disposed upstream of the peeling blade 41. The separation distance da in the feed direction between the downstream end 58 of the tape guide 5 and the tip 42 of the peeling blade 41 is within the range of 0.20 mm ± 0.05 mm. A chamfered portion 59 extending in the width direction is provided below the downstream end 58. The chamfered portion 59 is formed on an inclined surface with a chamfer length a1 in the feed direction of 0.70 mm or more and a chamfer height a2 in the up-down direction of 0.30 mm or more. The shape of the chamfered portion 59 is not limited to this and can be changed.

[0041] Next, the action of the peeling blade 41 will be described in comparison with the conventional configuration shown in FIG. 7. The peeling blade 41X of the conventional configuration has an edge portion at the top of the upstream tip 42X. The chamfered portion 59X of the tape guide 5 is formed as an inclined surface, but the chamfer length a1 and chamfer height a2 are smaller than those of the embodiment. Therefore, the cover tape 81 is more likely to come into contact with the edge portion of the tip 42X and be scraped, generating chips. In particular, when the cover tape 81 is coated with an antistatic agent, chips of the antistatic agent are even more likely to be generated.

[0042] On the other hand, according to the detailed shape of the vicinity of the tip 42 of the peeling blade 41 described above, as shown in FIG. 4, the cover tape 81 being fed in the feed direction starts to rise in the area of ​​the chamfered portion 59. Thereafter, the cover tape 81 barely comes into contact with the portion 71 near the tip, but moves while making surface contact with the trailing portion 72. As a result, the cover tape 81 does not come into contact with the edge portion. Therefore, the tape peeling device 4 has the effect of suppressing the generation of shavings from the cover tape 81. Furthermore, the effect of suppressing the generation of shavings is more pronounced when the cover tape 81 is coated with an antistatic agent. This effect has been confirmed experimentally. Furthermore, the reduction in shavings from the cover tape 81 improves the reliability of the mounting operation of the component mounting machine.

[0043] If the radius r1 of the arc of the tip-side portion 71 is too small, the tip-side portion 71 may act as an edge, which is undesirable. If the separation distance da is too small or the height hs of the tip portion 42 is too large, the cover tape 81 may not be able to start rising smoothly, which is undesirable. On the other hand, if the separation distance daX is too large as shown in FIG. 8 , the component 89 in the cavity 83 may rise and collide with the peeling blade 41, which is undesirable. If the height hs of the tip portion 42 is too small, the tip portion 42 may scrape the base tape 82, which is undesirable.

[0044] 6. First Variation Next, a first modified embodiment will be described with reference to FIG. 5. In the first modified embodiment, the shape of the peeling blade 41 is the same as in the embodiment, and the chamfered portion 59 of the tape guide 5 is omitted. In the first modified embodiment, the movement path of the cover tape 81 changes and the cover tape 81 moves while making surface contact with the leading end portion 71 and the trailing portion 72. However, the cover tape 81 does not come into contact with the edge portion. Therefore, in the first modified embodiment, as in the embodiment, the effect of suppressing the generation of chips from the cover tape 81 is achieved. This effect has been confirmed experimentally.

[0045] 7. Second Variant Next, a second modified embodiment will be described with reference to FIG. 6. In the second modified embodiment, the chamfered portion 59 of the tape guide 5 is the same as in the embodiment, but the shape of the leading edge portion 75 of the upper surface of the peeling blade 41 is modified from that of the embodiment. In the second modified embodiment, the leading edge portion 75 has an elliptical cross-sectional shape in a vertical cross section in the feed direction. The major axis of the elliptical arc, which is parallel to the feed direction, has a semi-major radius r2 of 0.07 mm or more, and the minor axis of the minor axis, which is perpendicular to the feed direction, has a semi-major radius r3 of 0.05 mm or more. In the second modified embodiment, the cover tape 81 does not come into contact with the edge portion, and similar to the embodiment, the generation of chips from the cover tape 81 is suppressed. This effect has been confirmed experimentally.

[0046] 8. Applications and Modifications of the Embodiments The effects of the tape peeling device 4 of the embodiment were experimentally confirmed using a carrier tape 8 with a width Tw of 8 mm. It goes without saying that the present invention is not limited to this, and the configuration of the tape peeling device 4 can be appropriately adapted and modified for carrier tapes 8 with widths Tw other than 8 mm. Furthermore, the cross-sectional shape of the portion (71, 75) of the peeling blade 41 near the tip in the feed direction may be a smooth curve with a curvature radius of 0.07 mm or more, and may be a different shape from a circular or elliptical arc. The embodiment and the first and second modified embodiments can be adapted for various other applications and modifications. [Explanation of symbols]

[0047] 1: Tape feeder 2: Feeder body 24: Tape passage 3: Tape feeding mechanism 4: Tape peeling device 41, 41X: Peeling blade 42, 42X: Tip portion 43: Blade tip 5: Tape guide 51: First ceiling plate 56, 57: Side plate 58: Downstream end portion 59, 59X: Chamfered portion 6: Feeder control portion 71: Portion near the tip 72: Subsequent portion 75: Portion near the tip 8: Carrier tape 81: Cover tape 82: Base tape 83: Cavity 85, 86: Adhesive portion 89: Component Tw: Width dimension (of carrier tape) Tc: Thickness dimension (of cover tape) hs: Height r1: Radius r2: Major radius r3: Minor radius da: Distance a1: Chamfer length a2: Chamfer height

Claims

1. a peeling blade disposed in a tape passage of a tape feeder that feeds a carrier tape in a predetermined feed direction, the carrier tape including a base tape having a plurality of cavities for accommodating components, and a cover tape adhered to the base tape by two adhesive strips extending in the tape length direction across the plurality of cavities, and peeling the cover tape from the base tape; The peeling blade has an upper surface, the portion of which is connected to the upstream end in the feeding direction and is formed into a smooth curved surface having an upward convex shape. Tape peeling device.

2. 2. The tape peeling device according to claim 1, wherein the peeling blade has a tip portion located between the two adhesive portions and a blade edge extending from the tip portion to a position of one of the two adhesive portions to peel off one of the two adhesive portions.

3. 2. The tape separating device according to claim 1, wherein the portion of the upper surface near the leading end has a cross-sectional shape of an arc in a vertical cross section in the feeding direction.

4. 4. The tape separating device according to claim 3, wherein the portion of the upper surface near the leading end has a cross-sectional shape in which the radius of the arc is 0.07 mm or more in a vertical cross section in the feed direction.

5. 2. The tape separating device according to claim 1, wherein the portion of the upper surface near the leading end has a cross-sectional shape of an elliptical arc in a vertical cross section in the feeding direction.

6. 6. The tape peeling device according to claim 5, wherein the portion of the upper surface near the tip has a cross-sectional shape in a vertical cross section in the feed direction such that the major axis of the elliptical arc parallel to the feed direction has a semi-major radius of 0.07 mm or more and the minor axis of the elliptical arc perpendicular to the feed direction has a semi-minor radius of 0.05 mm or more.

7. 2. The tape peeling device according to claim 1, wherein the tip of the peeling blade is located at a height of 0.10 mm to 0.15 mm from the upper surface of the base tape.

8. The tape peeling device according to claim 1, wherein at least a part of the upper surface of the peeling blade is subjected to a smoothing surface treatment.

9. A tape peeling device described in any one of claims 1 to 7, wherein a trailing portion of the upper surface of the peeling blade that smoothly connects from the portion near the tip to the downstream side is formed so as to gradually move away from the upper surface of the base tape as it progresses downstream.

10. 2. The tape peeling device according to claim 1, wherein the distance in the feed direction between the downstream end of a tape guide arranged upstream of the peeling blade and constituting the upper surface of the tape passage and the tip of the peeling blade is in the range of 0.20 mm ± 0.05 mm.

11. 2. The tape peeling device according to claim 1, wherein the tape guide, which is disposed upstream of the peeling blade and forms the upper surface of the tape passage, has a chamfered portion extending in a width direction intersecting the feed direction on the underside of the downstream end.

12. 12. The tape separating device according to claim 11, wherein the chamfered portion is formed on an inclined surface having a chamfer length in the feed direction of 0.70 mm or more and a chamfer height in the up-down direction of 0.30 mm or more.

13. 13. The tape peeling device according to claim 4, wherein the cover tape is made of a plastic film and has a thickness in the range of 0.05 mm to 0.07 mm.

14. The tape peeling device according to claim 13 , wherein the cover tape has an antistatic agent applied to a surface facing the cavity.

15. A tape peeling device according to any one of claims 1 to 7; the tape passage; a tape feeding mechanism that feeds the carrier tape in the feeding direction; A tape feeder comprising:

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