WO2024127452A1

WO2024127452A1 - Tape peeling device and tape feeder

Info

Publication number: WO2024127452A1
Application number: PCT/JP2022/045643
Authority: WO
Inventors: 隆川谷; 直也岩田
Original assignee: 株式会社Fuji
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2024-06-20

Abstract

This tape peeling device comprises a peeling blade that is disposed in a tape passage for feeding therethrough, in a prescribed feeding direction, a carrier tape composed of a base tape having a plurality of cavities for accommodating components and a cover tape adhered to the base tape via an adhesion part so as to cover the plurality of cavities, the peeling blade being for peeling off the cover tape from the base tape. The peeling blade has a chamfered portion on the upper edge of a cutting end formed so as to make a prescribed angle with respect to the feeding direction.

Description

Tape peeling device and tape feeder

This specification relates to a tape peeling device that peels off a cover tape from a base tape that constitutes a carrier tape for supplying components, and a tape feeder that includes the tape peeling device.

The technology of mass-producing board products by performing substrate-related operations on boards on which circuit patterns are formed is becoming widespread. A typical example of a substrate-related operation machine that performs substrate-related operations is a component mounting machine that mounts components on a board. Many component mounting machines are equipped with a tape feeder that supplies components using a carrier tape. The tape feeder is equipped with a tape peeling device that peels off the cover tape from the base tape that constitutes the carrier tape. One example of technology related to this type of tape peeling device is disclosed in Patent Document 1.

Patent Document 1 discloses a cover tape peeling mechanism that includes a blade having a blade tip that peels the cover tape from the base tape, a scooping surface that scoops up the peeled cover tape portion so as to separate it from the base tape, and a blade tip that penetrates between the cover tape and the base tape. It also discloses the use in advance of a cover tape peeling device that is separate from the cover tape peeling mechanism to ensure the penetration of the blade tip.

JP 2014-86504 A

Incidentally, in addition to the parts, there may be some foreign matter between the cover tape and the base tape. In particular, foreign matter such as fluff from torn paper fibers in the paper base tape and adhesive fragments from the adhesive joints are likely to get in between. These foreign matter particles are very small and will not cause defects on their own. However, if a large number of foreign matter particles get stuck in front of the blade portion of Patent Document 1, for example, and gather together to form a clump, there is a concern that they could cause defects.

The problem to be solved in this specification is therefore to provide a tape peeling device that prevents foreign matter from remaining and gathering within the carrier tape, and a tape feeder that includes this tape peeling device.

This specification discloses a tape peeling device that is arranged in a tape passage that feeds a carrier tape in a predetermined feed direction, the carrier tape being composed of a base tape having a plurality of cavities for accommodating components and a cover tape adhered to the base tape by an adhesive portion so as to cover the plurality of cavities, and that is equipped with a peeling blade that peels the cover tape from the base tape, the peeling blade having a chamfered portion on the upper edge of the blade tip that is formed to form a predetermined angle with the feed direction.

This specification also discloses a tape feeder that includes the tape peeling device described above, a tape guide that includes the tape peeling device, and a tape feed mechanism that feeds the carrier tape.

　In addition, this specification discloses the technical idea of changing "the tape peeling device according to claim 1" to "the tape peeling device according to

claim

1 or 2" in claim 3 as originally filed, the technical idea of changing "the tape peeling device according to claim 3" to "the tape peeling device according to claim 3 or 4" in claim 5 as originally filed, the technical idea of changing "the tape peeling device according to claim 1" to "the tape peeling device according to any one of claims 1 to 5" in claim 6 as originally filed, and the technical idea of 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 7 as originally filed.

In the tape peeling device and tape feeder disclosed in this specification, a chamfered portion is provided on the upper edge of the cutting edge of the peeling blade. This makes it easier for foreign matter present in the carrier tape to move downstream in the feed direction through the space formed between the cover tape and the chamfered portion, thereby preventing the accumulation and accumulation of foreign matter.

1 is a cross-sectional view in a tape width direction showing a configuration of a carrier tape that is a target of a peeling operation of a tape peeling device of a first embodiment. 1 is a side view showing a schematic diagram of a tape feeder including a tape separating device. FIG. 1 is a plan view showing a configuration of a tape separating device and explaining a separating operation. FIG. FIG. 4 is a plan view showing only the carrier tape in FIG. 3 . 5 is a cross-sectional view of the carrier tape taken along the VV arrow direction in FIG. 4, showing the folded-back state of the peeled cover tape. FIG. 4 is an enlarged perspective view of the peeling blade. FIG. 4 is an enlarged side view of the peeling blade. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 6, showing a design drawing of a vertical cross-sectional shape of the peeling blade. FIG. 11 is a diagram showing a first measurement example of the cross-sectional shape of a prototype peeling blade. FIG. 11 is a diagram showing a second measurement example of the cross-sectional shape of a prototype peeling blade. 1A to 1C are diagrams illustrating the operation of the tape peeling device. 11A and 11B are diagrams illustrating the operation of a tape peeling device including a comparative example of a peeling blade that does not have a chamfered portion. FIG. 11 is a design drawing of a vertical cross-sectional shape of a peeling blade according to a second embodiment.

1. Configuration of Carrier Tape 8 The tape peeling device 1 of the first embodiment is incorporated into a tape feeder 6 shown in Fig. 2. This tape feeder 6 is mounted on a component mounting machine (not shown) and supplies components using a carrier tape 8. The tape peeling device 1 serves to peel the cover tape from the base tape constituting the carrier tape 8 to open the cavity portion accommodating the components. The carrier tape 8 that is the target of the peeling operation of the tape peeling device 1 and the tape feeder 6 in which the tape peeling device 1 is incorporated will be described in advance.

As shown in FIG. 1, the carrier tape 8 is made up of a cover tape 81 and a base tape 82. FIG. 1 corresponds to a cross-sectional view taken along the line I-I in FIG. 4. The base tape 82 is made of a resin or paper tape of roughly uniform thickness with multiple cavities 83 formed therein, and a thin film tape is applied to the bottom surface. More specifically, a large number of rectangular cavity sections 83 are provided at equal intervals along the length of the tape in a position away from the center of the base tape 82 in the width direction toward one side edge. Each of the cavity sections 83 accommodates a component 89. A large number of feed holes 84 are provided at equal intervals along the length of the tape in a position away from the other side edge of the base tape 82.

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

In other words, the two adhesive strips (85, 86) are arranged with multiple cavity portions 83 in between. The two adhesive strips (85, 86) bond the base tape 82 and the cover tape 81 together with an adhesive. Note that each of the two adhesive strips (85, 86) is not limited to being linear, and may be arranged at intervals, for example, as shown by dashed lines. The cover tape 81 has a tape width dimension smaller than that of the base tape 82, and covers the cavity portions 83 but does not cover the feed holes 84. There are multiple types of carrier tape 8 with different tape width and tape thickness dimensions, and they can be used to accommodate various sizes of components 89.

Besides the parts 89, there may be some foreign matter between the cover tape 81 and the base tape 82. In particular, if the base tape 82 is made of paper, some of the paper fibers may break off during the manufacturing process and become fine thread-like fluff, which often becomes interposed between the tapes. In addition, some of the adhesive at the adhesive joints (85, 86) may break off and become fragments, becoming foreign matter and becoming interposed between the tapes. Foreign matter such as paper fiber fluff and adhesive fragments is very small, so it does not cause defects by itself. However, if a large number of foreign matter remain in a specific location and gather together to form a lump, there is a concern that it may cause defects. Therefore, it is essential that such specific locations are not formed inside the tape feeder 6.

There is also an embossed carrier tape (not shown) which has a structure different from the carrier tape 8 described above. Like carrier tape 8, the embossed carrier tape is made of a cover tape and a base tape. However, the base tape which constitutes the embossed carrier tape is expanded at equal pitches in the tape length direction of the resin tape to form cavities. The embossed carrier tape is compatible with carrier tape 8 in terms of use, and is subject to the peeling operation of the tape peeling device 1.

2. Overall Configuration of Tape Feeder 6 Next, the overall configuration of tape feeder 6 will be described with reference to FIG. 2. As shown by the arrows at the bottom right of FIG. 2, the X-axis direction and Y-axis direction in a horizontal plane, and the Z-axis direction corresponding to the vertical direction are defined for convenience. The X-axis direction coincides with the direction in which a board is transported in a component mounting machine equipped with tape feeder 6. The Y-axis direction coincides with a predetermined feed direction in which carrier tape 8 is fed, with the left side of FIG. 2 being the upstream side of the feed direction and the right side being the downstream side. Tape feeder 6 feeds carrier tape 8 to component feed position 66 downstream to feed components 89. Tape feeder 6 is composed of a main body 61, a tape feed mechanism 67 (partially omitted), a feeder control unit 69, and the like.

The main body 61 is formed primarily from a single side panel that is long in the Y-axis direction. The width dimension in the X-axis direction of the main body 61 is determined to match the tape width dimensions of multiple types of carrier tapes 8. In other words, there are multiple types of tape feeders 6 with different width dimensions. The main body 61 has a removable rail 62, a reel holding portion 63, and a tape guide 64. The removable rail 62 is provided on the bottom surface of the main body 61 and extends in the Y-axis direction. The removable rail 62 is used for attachment to a component mounting machine.

An upper positioning pin 611, a connector 612, and a lower positioning pin 613 are provided on the downstream end face of the main body 61 in that order from top to bottom. The upper positioning pin 611 and the lower positioning pin 613 engage with positioning holes provided on the main body side of the component mounting machine to position the tape feeder 6. When the tape feeder 6 is positioned, the connector 612 automatically fits into a receiving connector provided on the component mounting machine. This allows power to be supplied to the tape feeder 6, and the feeder control unit 69 is connected for communication to the main body side of the component mounting machine.

The reel holding portion 63 is provided at the bottom upstream of the main body 61. The reel holding portion 63 replaceably holds the reel RL around which the carrier tape 8 is wound. The reel holding portion 63 is formed by at least one of a holding shaft 631 and an outer periphery holding portion 632. The holding shaft 631 is disposed to extend in the X-axis direction, and rotatably holds the central hole of the reel RL. The outer periphery holding portion 632 rotatably holds the outer periphery of the reel RL.

The tape guide 64 forms a tape passage that feeds the carrier tape 8 in a predetermined feed direction. The tape guide 64 is formed in a rectangular tube shape using, for example, a bottom plate, two side plates, and a top plate, and part of the top plate may be omitted. The tape guide 64 starts from the insertion port 65 close to the reel holding part 63, extends diagonally upward in the downstream direction, and extends horizontally in the downstream direction from the middle, ending at the upper part of the downstream end of the main body 61. A position close to the downstream end of the tape guide 64 is a predetermined component supply position 66. The tape guide 64 is provided with a tape peeling device 1 upstream of the component supply position 66. The tape guide 64 guides the carrier tape 8 pulled out from the reel RL to the tape peeling device 1, and guides at least the base tape 82 from the tape peeling device 1 to the component supply position 66.

The tape feed mechanism 67 feeds the carrier tape 8 at a constant pitch and sequentially supplies the components 89 at the component supply position 66. The tape feed mechanism 67 is composed of four sprockets, two sets of servo motors, a gear mechanism, and the like. The first sprocket 671 is disposed below the tape guide 64 slightly downstream of the component supply position 66 and is rotatably supported by the main body 61. The second sprocket 672 is disposed below the tape guide 64 slightly upstream of the tape peeling device 1 and is rotatably supported by the main body 61. The teeth of each of the first sprocket 671 and the second sprocket 672 protrude from a groove formed in the bottom plate of the tape guide 64 and fit into the feed hole 84 of the carrier tape 8. The first sprocket 671 and the second sprocket 672 are driven synchronously by the front servo motor and the gear mechanism, and can be switched between forward and reverse rotation.

The third sprocket 673 and the fourth sprocket 674 are positioned below the tape guide 64 slightly downstream of the insertion port 65 and are rotatably supported by the main body 61. The teeth of each of the third sprocket 673 and the fourth sprocket 674 protrude from a groove formed in the bottom plate of the tape guide 64 and fit into the feed hole 84 of the carrier tape 8. The third sprocket 673 and the fourth sprocket 674 are driven synchronously by a rear servo motor and a gear mechanism, and can be switched between forward and reverse rotation.

During normal operation, the four sprockets rotate in the forward direction in sync, feeding the carrier tape 8 at a fixed pitch. In the loading operation when starting to use the carrier tape 8, the third sprocket 673 and the fourth sprocket 674 rotate in the forward direction first, followed by the first sprocket 671 and the second sprocket 672 rotating in the forward direction. The loading operation means loading the tip of the carrier tape 8 to be used to the component supply position 66 and preparing it for operation. When the operation comes to a close and the partially used carrier tape 8 is to be removed, the four sprockets rotate in the reverse direction in sync, returning the carrier tape 8 in the direction of the reel RL. The number of sprockets may be three or less.

The feeder control unit 69 is provided in the main body 61, and its position is not limited. The feeder control unit 69 is a computer device that operates with software. The feeder control unit 69 controls the front servo motor and the rear servo motor. The feeder control unit 69 is connected to the control unit of the component mounting machine by the connector 612 and receives commands. The feeder control unit 69 is also connected to the tape detection sensor 6A. The tape detection sensor 6A is disposed on the inclined portion between the third sprocket 673 and the fourth sprocket 674 of the tape guide 64, and detects the presence or absence of the carrier tape 8 being fed. The feeder control unit 69 receives a detection signal from the tape detection sensor 6A and reflects it in the control of the feeding and returning of the carrier tape 8. Note that the tape feeder 6 does not need to hold the reel RL inside the main body 61, and the carrier tape 8 may be fed from the reel RL held in a separate reel holding device.

3. Configuration and peeling operation of tape peeling device 1 Next, the configuration and peeling operation of the tape peeling device 1 of the first embodiment will be described. In Fig. 3 and Fig. 4, the cover tape 81 constituting the carrier tape 8 is shown with diagonal hatching for convenience. Also, the two adhesive portions (85, 86) and the parts 89 are shown in black for convenience. As shown in Fig. 3, the tape peeling device 1 is composed of two side plates (17, 18), a first tape guide 11, a second tape guide 12, a peeling blade 2, a tape folding plate 14, and the like.

The two side plates (17, 18) are part of the components of the tape guide 64. The two side plates (17, 18) stand vertically apart from each other and extend parallel to the feed direction of the carrier tape 8. The first tape guide 11 and the second tape guide 12 are thin plate-like members that are arranged parallel to the bottom plate of the tape guide 64 while being spaced apart above the tape guide 64. The distance between the first tape guide 11 and the second tape guide 12 and the bottom plate of the tape guide 64 is slightly larger than the thickness of the carrier tape 8. The carrier tape 8 passes through a tape passage formed by this distance.

The rear part of the first tape guide 11 is suspended across the upper surfaces of the two side plates (17, 18) and occupies the entire width of the tape peeling device 1. The front part of the first tape guide 11 has a reduced width and is positioned closer to the other side plate 18. An oval-shaped feed hole confirmation window 111 is formed downstream of the first tape guide 11, allowing the feed hole 84 of the carrier tape 8 to be visually observed. Notched windows, marked with an omitted symbol, are formed at multiple other positions on the first tape guide 11, allowing the carrier tape 8 to be visually observed.

The second tape guide 12 is arranged next to the downstream side of the first tape guide 11 and attached to one of the side plates 17. The second tape guide 12 is opened by cutting out a portion corresponding to the component supply position 66. An opening 15 extending in the feed direction is formed between the first tape guide 11 and the second tape guide 12. The upstream part of the opening 15 opens in the width direction between the first tape guide 11 and the side plate 17.

The peeling blade 2 is positioned within the opening 15 upstream of the second tape guide 12. The peeling blade 2 is attached so as to protrude in the width direction from one of the side plates 17. The peeling blade 2 has a tip 21 and a cutting edge 22. The tip 21 is located at the upstream end of the peeling blade 2, is formed to extend in the tape width direction, and faces the upstream side. The tip 21 is formed thin in the vertical direction so that it can easily enter between the base tape 82 and the cover tape 81.

The blade tip 22 is located on one side of the tip 21 in the tape width direction, and overlaps one adhesive portion 85 but does not overlap the other adhesive portion 86. The blade tip 22 is formed to extend in a blade length direction D (see FIG. 6) that forms an acute angle with the feed direction. By setting the blade length direction D not in the tape width direction but at an acute angle with the feed direction, the force required during the peeling operation can be reduced. Furthermore, the blade tip 22 is formed thin in the vertical direction, so that one adhesive portion 85 can be easily peeled off. The height position of the peeling blade 2 within the tape passage can be adjusted, and the height of the tip 21 and the blade tip 22 relative to the carrier tape 8 can be optimized.

The tape folding plate 14 is connected to the rear of the peeling blade 2 and is positioned to extend widthwise from one of the side plates 17. The tape folding plate 14 is positioned parallel to and spaced above the first tape guide 11 and the second tape guide 12. The tape folding plate 14 has side edges 16 for folding back the cover tape 81 to open the cavity portion 83, and is gradually widened in the downstream direction away from the peeling blade 2. The distance between the tape folding plate 14 and the first tape guide 11 is adjusted so that the cover tape 81 can be folded back smoothly. The portion of the tape folding plate 14 that corresponds to the component supply position 66 is cut out to open it.

Next, the peeling operation of the tape peeling device 1 will be described. When the tape feed mechanism 67 operates to feed the carrier tape 8, the tip of the carrier tape 8 faces the peeling blade 2. When the carrier tape 8 is further fed and its tip arrives, the tip 21 first enters between the base tape 82 and the cover tape 81. When the carrier tape 8 is further fed, the tip 21 advances relatively between the base tape 82 and the cover tape 81. The blade tip 22 also abuts at an angle against the advancing adhesive portion 85 and cuts it open, making it possible to easily peel the cover tape 81 from the base tape 82. As a result, the cover tape 81 is fed downstream in a semi-peeled state in which one adhesive portion 85 has been peeled off and the other adhesive portion 86 has been adhered (semi-peeling method).

The partially peeled cover tape 81 passes above the peeling blade 2 as shown in FIG. 3. As the cover tape 81 is fed downstream, it rises above the other adhesive portion 86 while running along the side of the peeling blade 2. Furthermore, the cover tape 81 is folded back toward the other side plate 18 along the side edge 16 of the tape folding plate 14. The cover tape 81 is then folded back 180° at the component supply position 66 as shown in FIG. 5. This opens the cavity portion 83, allowing the supply of the component 89. After the component 89 is removed, the carrier tape 8 is discharged downstream of the tape feeder 6 with the cover tape 81 still adhered to the base tape 82 by the other adhesive portion 86.

4. Detailed Shape of the Stripping Blade 2 Next, the detailed shape of the stripping blade 2 will be described with reference to Figs. 6 to 10. Strictly speaking, Fig. 8 shows the vertical cross-sectional shape of the cutting edge 22 of the stripping blade 2 in the orthogonal direction C2 (see Fig. 6) perpendicular to the blade length direction D. Nevertheless, the vertical cross-sectional shape of the stripping blade 2 in the feed direction C1 is similar to the vertical cross-sectional shape of the orthogonal direction C2. In other words, Fig. 8 may be considered to qualitatively show the vertical cross-sectional shape of the stripping blade 2 in the feed direction C1. In addition to the tip 21 and cutting edge 22 described above, the stripping blade 2 has a chamfered portion 23, a first inclined upper surface 24, a second inclined upper surface 25, and a stepped lower surface 26.

The chamfered portion 23 is provided on the upper edge of the cutting edge 22. In the first embodiment, the chamfered portion 23 is formed into a smooth convex curved surface. In the specific example shown in the design drawing in Figure 8, the chamfered portion 23 is formed into the shape of a portion of a cylindrical surface with a radius R. The height dimension H of the chamfered portion 23 is smaller than the vertical blade thickness dimension T of the cutting edge 22 excluding the chamfered portion 23. In detail, in the design drawing, it is preferable to set the radius R to a suitable range of approximately 15 to 40% of the assumed blade thickness dimension TA (see Figure 12) for a configuration without the chamfered portion 23.

Naturally, shape errors caused by performance constraints of the processing machine that forms the chamfered portion 23 are acceptable. If the chamfered portion 23 is formed too large and the cutting edge 22 is sharpened, the cutting edge 22 is more likely to break. If the chamfered portion 23 is formed too small, the movement space 27 described below will be small, and no significant effect can be expected.

Two stripping blades 2 were prototyped based on the design drawings, and the results of measurements using a three-dimensional shape measuring machine were obtained as the first measurement example shown in FIG. 9 and the second measurement example shown in FIG. 10. The equivalent radius R1 of the chamfered portion 23 measured in the first measurement example was about 17% of the expected blade thickness dimension TA. The equivalent radius R2 of the chamfered portion 23 measured in the second measurement example was about 28% of the expected blade thickness dimension TA. In other words, the two prototype stripping blades 2 have a chamfered portion 23 consisting of a roughly cylindrical surface with a radius R in the preferred range. The expected blade thickness dimension TA can be 0.29 mm, but is not limited to this. The smooth convex curved surface of the chamfered portion 23 is not limited to a cylindrical surface, and may be a curved surface whose cross-sectional shape is expressed by a quadratic function such as an ellipse, or a curved surface whose cross-sectional shape is expressed by a part of a sine wave.

The chamfered portion 23 is also positioned higher than the tip portion 21 (see FIG. 7). As a result, the chamfered portion 23 pushes the peeled cover tape 81 to a position higher than the tip portion 21, making it easier for a gap to form between the cover tape 81 and the tip portion 21. Therefore, foreign matter present in the carrier tape 8 is prevented from remaining in front of (upstream of) the tip portion 21.

The first inclined upper surface 24 is formed so as to gradually increase in height from the upper edge of the chamfered portion 23 in the feed direction C1. The second inclined upper surface 25 is formed so as to gradually increase in height from the upper edge of the tip portion 21 in the feed direction C1. The first inclined upper surface 24 and the second inclined upper surface 25 gradually guide the side of the partially peeled cover tape 81 closer to the adhesive portion 85 upward, facilitating folding by the tape folding plate 14.

The stepped lower surface 26 is formed on the underside of the peeling blade 2. The stepped lower surface 26 is high at the lower edge of the cutting edge 22 and steps down as it advances in the feed direction C1, with the downstream side being flat. By having the stepped lower surface 26, the peeling blade 2 can move the point of contact with the upper surface of the base tape 82 downstream. This prevents the cutting edge 22 from cutting the upper surface of the base tape 82 and generating new foreign matter. This effect is particularly noticeable for paper base tapes 82, which are prone to fuzzing of paper fibers.

5. Operation of the tape peeling device 1 Next, the operation of the tape peeling device 1, mainly the operation on the foreign matter P interposed in the carrier tape 8, will be described in comparison with the operation of the peeling blade 2X of the comparative example in which the chamfered portion 23 is not provided. In the peeling blade 2X of the comparative example shown in FIG. 12, the upper edge of the blade tip 22X of the assumed blade thickness dimension TA is sharply angular and continues to the first inclined upper surface 24. When the carrier tape 8 is fed toward this peeling blade 2X, no gap is generated between the peeled cover tape 81 and the upper edge of the blade tip 22X. For this reason, the foreign matter P interposed in the carrier tape 8 tends to remain in front of the blade tip 22X (upstream side), or to get caught in the angular position of the upper edge of the blade tip 22X. Furthermore, a large number of foreign matters P tend to gather and become a lump Q.

There is a concern that the lump Q of foreign matter P may become caught under the peeling blade 2X, causing a defect that inhibits the feeding of the base tape 82, or may become caught above the peeling blade 2X, causing a defect that inhibits the feeding of the cover tape 81. There is also a concern that the lump Q of foreign matter P may move below or above the peeling blade 2X to the component supply position 66 downstream, inhibiting the component suction operation of the suction nozzle.

In contrast, in the peeling blade 2 of the first embodiment shown in FIG. 11, when the carrier tape 8 is fed, a movement space 27 is formed between the peeled cover tape 81 and the chamfered portion 23. The movement space 27 has a wedge shape that gradually narrows as it advances in the feed direction C1. The movement space 27 allows the foreign matter P present in the carrier tape 8 to move in the feed direction. Therefore, the foreign matter P is likely to move downstream in the feed direction together with the cover tape 81 through the movement space 27. In particular, fine thread-like fluff easily passes through the movement space 27 and moves downstream along the first inclined upper surface 24. As a result, the foreign matter P is less likely to remain in front (upstream) or on the upper edge of the blade tip 22, and agglomerates Q formed by the collection of foreign matter P are hardly generated.

In a comparative experiment using the peeling blade 2X shown in Figure 12, approximately 15% of the foreign matter P present in the carrier tape 8 gathered together to form a lump Q. On the other hand, in a verification experiment using the prototype peeling blade 2 shown in Figures 9 and 10, the proportion of foreign matter P that gathered was less than 1% of the foreign matter P present in the carrier tape 8, and almost no lump Q was formed. Therefore, the tape peeling device 1 is significantly effective in suppressing the retention and aggregation of foreign matter P.

In the tape peeling device 1 and tape feeder 6 of the first embodiment, a chamfered portion 23 is provided on the upper edge of the cutting edge 22 of the peeling blade 2. This makes it easier for foreign matter P present in the carrier tape 8 to move downstream in the feed direction C1 through the movement space 27 formed between the cover tape 81 and the chamfered portion 23, thereby preventing the foreign matter P from accumulating and collecting.

Furthermore, in the first embodiment, it is possible to reduce feeding failures of the base tape 82 and cover tape 81 caused by lumps Q of foreign matter P, and to reduce component suction failures of the suction nozzle, thereby maintaining high operational reliability of the tape feeder 6. In addition, it is possible to reduce temporary interruptions to the operation of the component mounting machine caused by the above-mentioned failures, thereby improving the production efficiency of board products and reducing labor. In addition, restrictions on the use of the carrier tape 8, which includes a paper base tape 82 that has a relatively large amount of foreign matter P such as fuzz, are relaxed.

6. Peeling blade 2A of the second embodiment
Next, a peeling blade 2A of a second embodiment will be described with reference to Fig. 13. In the second embodiment, the configuration of the tape peeling device 1 other than the peeling blade 2A is the same as that of the first embodiment. The peeling blade 2A of the second embodiment is provided with a chamfered portion 31 different from that of the first embodiment, and is formed by replacing the stepped lower surface 26 with an inclined lower surface 34.

The chamfered portion 31 of the second embodiment is composed of a first plane 32 and a second plane 33. The first plane 32 is connected to the upper edge of the cutting edge 22 and is inclined at approximately 20 degrees relative to the vertical direction. The second plane 33 is connected to the upper edge of the first plane 32 and is inclined at approximately 45 degrees relative to the vertical direction, with its upper edge connected to the first inclined upper surface 24. Not limited to the above, the chamfered portion 31 may be formed by a single inclined plane, or by three or more planes connected together with different inclination angles. Like the chamfered portion 23 of the first embodiment, the chamfered portion 31 forms a movement space 27 between the cover tape 81 through which the foreign matter P passes, thereby preventing the foreign matter P from accumulating and collecting.

The inclined lower surface 34 is formed on the underside of the peeling blade 2A. The inclined lower surface 34 gradually becomes lower as it proceeds from the lower edge of the cutting edge 22 in the feed direction C1, and is formed flat downstream of a predetermined position in the feed direction C1. Like the stepped lower surface 26 of the first embodiment, the inclined lower surface 34 prevents the cutting edge 22 from cutting the surface of the base tape 82 and generating new foreign matter. Other functions and effects of the second embodiment are the same as those of the first embodiment, so description thereof will be omitted.

7. Application and Modification of the Embodiment In the first embodiment, the blade tip 22 is a vertical surface, but the upper part may be an inclined surface with a recessed upper part in the feed direction C1. The blade tip 22 may be disposed on both sides of the tip 21 in the tape width direction, and may peel off the two adhesive portions (85, 86) (total peeling method). Furthermore, the tape feeder 6 may be a type in which the second carrier tape 8 is inserted while the first carrier tape 8 is in use, and the second carrier tape 8 is automatically loaded when the first carrier tape 8 is used up. The first and second embodiments can be applied and modified in various other ways.

1: Tape peeling

device

2, 2A, 2X: Peeling blade 21:

Tip

22, 22X: Blade tip 23: Chamfered section 24: First inclined upper surface 25: Second inclined upper surface 26: Stepped lower surface 27: Movement space 31: Chamfered section 34: Inclined lower surface 6: Tape feeder 61: Main body 64: Tape guide 66: Part supply position 67: Tape feed mechanism 8: Carrier tape 81: Cover tape 82: Base tape 83: Cavity section 85, 86: Adhesive section 89: Part C1: Feed direction D: Blade length direction P: Foreign object Q: Lump R: Radius R1, R2: Equivalent radius

Claims

a peeling blade that is disposed in a tape passage that feeds a carrier tape including a base tape having a plurality of cavities for accommodating components and a cover tape adhered to the base tape by an adhesive portion so as to cover the plurality of cavities in a predetermined feed direction and peels off the cover tape from the base tape;
The peeling blade has a chamfered upper edge formed so as to form a predetermined angle with the feed direction.
The tape peeling device of claim 1, wherein the height dimension of the chamfered portion is smaller than the vertical blade thickness dimension of the blade tip.
The peeling blade is
a tip portion that is disposed upstream of the blade tip in the feeding direction and extends in the tape width direction, and that moves relatively between the base tape and the cover tape when the carrier tape is fed;
the blade tip is disposed on one side of the tip portion in the tape width direction, extends in a direction forming an acute angle with the feed direction, and peels off one of the two adhesive portions extending in the tape length direction with the plurality of cavity portions therebetween.
The tape peeling device according to claim 1 .
The tape peeling device of claim 3, wherein the chamfered portion is positioned higher than the tip portion.
The tape peeling device of claim 3, wherein the peeling blade has a first inclined upper surface that gradually becomes higher as it advances from the upper edge of the blade tip in the feed direction, and a second inclined upper surface that gradually becomes higher as it advances from the upper edge of the tip in the feed direction.
The tape peeling device according to claim 1, wherein the chamfered portion forms a wedge-shaped movement space between the cover tape that gradually narrows as the chamfered portion advances in the feed direction, allowing foreign matter interposed between the base tape and the cover tape to move in the feed direction through the movement space.
The tape peeling device according to claim 1, which is intended to peel off the carrier tape that includes the base tape made of paper.
The tape peeling device according to claim 7, wherein the peeling blade has a stepped underside that is high at the lower edge of the blade tip and low as the blade advances in the feed direction, or a sloping underside that gradually becomes lower as the blade advances in the feed direction from the lower edge of the blade tip.
A tape peeling device according to any one of claims 1 to 8,
A tape guide including the tape peeling device;
a tape feed mechanism for feeding the carrier tape;
A tape feeder comprising: