Tape peeling device and tape feeder

Abstract

The utility model provides a tape stripping device and a tape feeder, which can restrain the generation of cutting blades of a cover tape. A tape peeling device is provided with a peeling blade which is disposed in a tape passage of a tape feeder that feeds a carrier tape in a predetermined feeding direction, and which peels a cover tape from a base tape, the carrier tape being configured so as to include the base tape and the cover tape, the base tape having a plurality of chambers for accommodating components, the cover tape is bonded to the base tape through two bonding parts which are separated by a plurality of cavities and extend along the length direction of the tape, and the part, close to the front end, of the upper surface connected with the front end part on the upstream side in the feeding direction of the stripping knife forms a smooth curved surface with an upward convex shape.

Description

TECHNICAL FIELD

[0001] The present specification relates to the technical field of tape feeders that supply components using a carrier tape. BACKGROUND

[0002] Techniques are spreading in which a substrate on which a circuit pattern is formed is subjected to a substrate work to mass-produce a product substrate. As a representative example of a substrate work machine that implements the substrate work, there is a component mounting machine that mounts components on a substrate. A plurality of component mounting machines are provided with a tape feeder that supplies components using a carrier tape. If the tape feeder is roughly classified, there are a full peeling method in which two adhesive portions between a base tape and a cover tape that constitute the carrier tape are peeled, and a half peeling method in which only one adhesive portion is peeled and the cover tape is bent. A technical example related to the tape feeder of this half peeling method is disclosed in Patent Literature 1.

[0003] In Patent Literature 1, a tape feeder is disclosed that is provided with: a feeder main body having a component supply portion; a driving device that carries a carrier tape; a tape guide provided to the component supply portion; a peeling device provided to the tape guide that peels the other side while maintaining a state in which a rim portion of one side of the cover tape that is adhered to the base tape is adhered; a bending device provided to the tape guide that bends the peeled cover tape to one side; and a restriction portion provided to the tape guide that maintains a state of the bent cover tape.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Publication No. 2023-53334 SUMMARY

[0007] PROBLEMS TO BE SOLVED BY THE INVENTION

[0008] However, in the technical example of Patent Literature 1, depending on the shape of the tape guide and the peeling device, there is a possibility that damage will not occur when the cover tape is peeled. In particular, the peeling device has a peeling blade that peels the adhesive portion between the cover tape and the base tape, so there is a possibility that the peeling blade will cut the lower surface of the cover tape and generate a cutting piece. Furthermore, in the case of a cover tape on which an antistatic agent is applied, the antistatic agent is cut and cutting pieces are easily generated. These cutting pieces sometimes move after gathering and adhere to components, or are left in the tape passage, and can become a cause of a defective condition.

[0009] Therefore, in the present specification, the problem to be solved is to provide a tape peeling device and a tape feeder that suppress generation of cutting pieces of a cover tape.

[0010] MEANS FOR SOLVING THE PROBLEMS

[0011] The present specification discloses a tape peeling device provided with a peeling knife arranged in a tape passage of a tape feeder that feeds a tape in a predetermined feeding direction, and peels a cover tape from a base tape, the tape being configured to include the base tape having a plurality of cavities that accommodate elements, and the cover tape adhered to the base tape by two adhesive portions extending in a tape length direction across the plurality of cavities, a leading end portion of an upper surface of the peeling knife connected to an upstream side of the feeding direction is formed into a smooth curved surface in a convex shape upward.

[0012] Further, the present specification discloses a tape feeder provided with the tape peeling device, the tape passage, and a tape feeding mechanism that feeds the tape in the feeding direction.

[0013] Further, in the present specification, the technical idea of changing "the tape peeling device described in Technical Solution 1" to "the tape peeling device described in Technical Solution 1 or 2" in Technical Solution 3 at the time of filing, the technical idea of changing "the tape peeling device described in Technical Solution 1" to "the tape peeling device described in Technical Solution 1 or 2" in Technical Solution 5 at the time of filing, the technical idea of changing "the tape peeling device described in Technical Solution 1" to "the tape peeling device described in any one of Technical Solutions 1 to 6" in Technical Solution 7 at the time of filing, the technical idea of changing "the tape peeling device described in any one of Technical Solutions 1 to 7" to "the tape peeling device described in any one of Technical Solutions 1 to 8" in Technical Solution 9 at the time of filing, the technical idea of changing "the tape peeling device described in Technical Solution 1" to "the tape peeling device described in any one of Technical Solutions 1 to 9" in Technical Solution 10 at the time of filing, and the technical idea of changing "the tape peeling device described in Technical Solution 1" to "the tape peeling device described in any one of Technical Solutions 1 to 10" in Technical Solution 11 at the time of filing are disclosed. Further, in the present specification, the technical idea of changing "the tape feeder provided with the tape peeling device described in any one of Technical Solutions 1 to 7" to "the tape feeder provided with the tape peeling device described in any one of Technical Solutions 1 to 14" in Technical Solution 15 at the time of filing is disclosed.

[0014] Effect of Invention

[0015] According to the disclosed structure, the leading end portion of the upper surface of the peeling knife connected to the leading end portion is formed into a smooth curved surface in a convex shape upward, and makes surface contact with the cover tape in a manner that the edge portion does not contact, so that generation of a cut piece of the cover tape can be suppressed. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a side view showing the overall structure of a tape feeder provided with the tape peeling device of the embodiment.

[0017] Figure 2 is a plan view schematically showing the structure of the tape peeling device and explaining the peeling action.

[0018] Figure 3 is a plan view showing only the tape carrier in Figure 2 .

[0019] Figure 4 is a side sectional view showing the detailed shape of the vicinity of the front end portion of the peeling blade and explaining the action thereof.

[0020] Figure 5 is a side sectional view showing the detailed shape of the vicinity of the front end portion of the peeling blade in the first modification.

[0021] Figure 6 is a side sectional view showing the detailed shape of the vicinity of the front end portion of the peeling blade in the second modification and explaining the action thereof.

[0022] Figure 7 is a side sectional view showing the shape of the peeling blade of the related art and explaining the action thereof.

[0023] Figure 8 is a side sectional view explaining the action of the structure in which the separation distance of the downstream end portion of the tape guide from the front end portion of the peeling blade is too large. DETAILED DESCRIPTION

[0024] 1. Overall structure of tape feeder 1

[0025] First, the overall structure of the tape feeder 1 provided with the tape peeling device 4 of the embodiment will be explained with reference to Figure 1 The tape feeder 1 is detachably equipped to a component mounting machine and supplies components using the tape carrier 8. From the left side toward the right side of Figure 1 , the direction is the feeding direction of the tape carrier 8, and the left side is the upstream side, and the right side is the downstream side. The tape feeder 1 is provided with a feeder main body 2, a tape passage 24, a tape feeding mechanism 3, a tape peeling device 4, a tape guide 5, a feeder control section 6, and the like.

[0026] The feeder main body 2 forms the outer shape of the tape feeder 1 which is thin in the width direction. The feeder main body 2 has a mounting / demounting rail 21, a tape reel housing frame 231, a housing plate 232, an opening / closing plate 233, a tape passage 24, and a locking mechanism 25. The mounting / demounting rail 21 is provided on the bottom surface of the feeder main body 2 and extends in the feeding direction of the tape 8 for mounting to the component mounting machine. An upper positioning pin 221, a connector 222, and a lower positioning pin 223 are provided in this order from the upper side to the lower side of the downstream end surface of the feeder main body 2. The upper positioning pin 221 and the lower positioning pin 223 are engaged in positioning holes provided on the main body side of the component mounting machine to position the tape feeder 1. When the tape feeder 1 is positioned, the connector 222 is automatically fitted with a connector provided on the receiving side of the component mounting machine. Thus, the tape feeder 1 is supplied with power, and the feeder control section 6 is communicatively connected to the control device of the component mounting machine.

[0027] The tape reel housing frame 231 is a plurality of frame members that form a large circular inner space in the substantially center of the feeder main body 2. The tape reel housing frame 231 rotatably houses the tape reel RL in the inner space. The housing plate 232 is attached to the vicinity of the lower portion of the tape reel housing frame 231. The housing plate 232 prevents the tape reel RL housed in the tape reel housing frame 231 from coming off. The opening / closing plate 233 is attached at a position higher than the middle height of the tape reel housing frame 231. The support portions 234 of the upper portion of the opening / closing plate 233 are swingably supported to the feeder main body 2 to open and close. The tape reel RL can be replaced by opening the opening / closing plate 233. The tape reel RL has the tape 8 on which a plurality of components are stored wound therearound.

[0028] The tape passage 24 forms a movement passage that feeds the tape 8 in a predetermined feeding direction. The tape passage 24 can be, for example, a cylindrical shape having a rectangular cross section formed by the bottom surface, the two side surfaces, and the upper surface, and a portion of the cylindrical shape is omitted. The tape passage 24 extends obliquely upward from a position close to the tape reel RL toward the downstream direction, extends substantially horizontally from the middle toward the downstream direction, and ends at the upper portion of the downstream end of the feeder main body 2. A position close to the end of the tape passage 24 becomes a predetermined component supply position 242.

[0029] A tape guide 5 that constitutes the upper surface of the tape passage 24 is provided in a detachable manner at a position close to the downstream of the tape passage 24. The tape guide 5 is formed to include the component supply position 242. A tape peeling device 4 is provided at a position upstream of the component supply position 242 in the tape guide 5. The tape passage 24 guides the tape 8 pulled out from the tape reel RL to the tape peeling device 4, and at least the base tape 82 (described later) from the tape peeling device 4 to the component supply position 242. The tape guide 5 and the tape peeling device 4 are described in detail later.

[0030] A lock mechanism 25 is provided on the upper portion of the upstream side of the feeder main body 2. The lock mechanism 25 is composed of a lock pin 251, a lock operation member 252, a lock sensor 253, and the like. The lock pin 251 is a cylindrical member that is held by the feeder main body 2 so as to be vertically movable. The lock pin 251 is urged upward by a spring (not shown) to be in a locked state in the normal time, and restricts the operation of detaching the tape feeder 1. The lock operation member 252 is a Y-shaped member having a swing pivot in the center. The lock operation member 252 drives the lock pin 251 downward to release the locked state when it is swing-driven automatically or manually, and permits the operation of detaching the tape feeder 1. The lock sensor 253 detects the position of the lock pin 251, that is, whether it is in the locked state, and outputs to the feeder control section 6.

[0031] The tape feed mechanism 3 feeds the carrier tape 8 by a certain pitch at a time, and supplies the components one by one at the component supply position 242. The tape feed mechanism 3 is composed of a tape guide gear, a servo motor, a gear mechanism, and the like, which are not shown. The tape guide gear is provided on the lower side of the tape passage 24, and is rotatably supported by the feeder main body 2. The teeth of the tape guide gear protrude from a groove formed in the bottom surface of the tape passage 24, and are fitted into the feed holes 84 (described later) of the carrier tape 8. The tape guide gear is driven from the servo motor via the gear mechanism, and can be switched between forward rotation and reverse rotation.

[0032] The feeder control section 6 is provided on the lower portion of the upstream side of the feeder main body 2, and its position is not limited. The feeder control section 6 is composed of an LSI element having a built-in CPU. The feeder control section 6 is communicatively connected to the control device of the component mounting machine via the connector 222. The feeder control section 6 controls the tape feed mechanism 3 according to the instruction from the control device, and monitors the state of the lock mechanism 25.

[0033] 2. Structure of carrier tape 8

[0034] Next, the structure of the carrier tape 8 used for the tape feeder 1 will be described with reference to Figure 3 and Figure 4 Figure 3 In the drawings, the cover tape 81 constituting the carrier tape 8 is indicated by hatched lines with oblique lines for convenience. In addition, the two adhesive portions (85, 86) and the components 89 are indicated in black for convenience. The carrier tape 8 includes the cover tape 81 and a base tape 82.

[0035] The base tape 82 is made of paper or plastic. The base tape 82 is provided with a plurality of rectangular hole-shaped chambers 83 at equal intervals in the tape length direction at a position near one side edge 821 from the center in the tape width direction. The components 89 are respectively housed in the chambers 83. The base tape 82 is provided with a plurality of feed holes 84 at equal intervals in the tape length direction at a position near the other side edge 822.

[0036] ​A cover tape 81 is adhered to the upper surface of the base tape 82. The cover tape 81 is formed of a transparent plastic film so that the components 89 inside the chamber 83 can be visually inspected or viewed with an optical camera. A first adhesive portion 85 extending along the tape length direction is provided between the chamber 83 of the base tape 82 and one of its side edges 821. Furthermore, a second adhesive portion 86 extending along the tape length direction is provided between the chamber 83 of the base tape 82 and the feed hole 84.

[0037] That is, two adhesive portions (85, 86) extend along the length of the tape across multiple chambers 83. The two adhesive portions (85, 86) bond the cover tape 81 to the base tape 82 in a peelable manner. The width of the cover tape 81 is smaller than that of the base tape 82, covering the chambers 83 but not the feed holes 84. The carrier tape 8 has various width and thickness dimensions, corresponding to the various dimensions of the component 89.

[0038] For example, in Figure 3 In the carrier tape 8 shown, which has a width dimension Tw of 8 mm, the base tape 82 also has a width dimension Tw of 8 mm. Furthermore, the width dimension 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 central edge of the first adhesive portion 85 is approximately 2.1 mm. Additionally, the distance D2 between one side edge 821 and the central edge of the second adhesive portion 86 is approximately 3.5 mm.

[0039] Additionally, the carrier tape with a width Tw of 8mm will... Figure 3 and Figure 4 The illustrated element 89 is housed in chamber 83. Regarding the size of element 89, the longitudinal dimension Lp is 0.4 mm, the lateral dimension Wp is 0.2 mm, and the height dimension Hp is 0.2 mm. On the other hand, the thickness dimension Tb of the baseband 82 is 0.3 mm. The depth Dc of chamber 83 is approximately the same as, or slightly larger than, the height dimension Hp (=0.2 mm) of element 89. Furthermore, the thickness dimension Tc of the cover band 81 ranges from 0.05 mm to 0.07 mm. Figures 4-8 In the figure, the thickness dimension Tc of the cover band 81 is depicted as 0.05 mm.

[0040] In the cover tape 81, an antistatic agent is applied to the surface opposite to the chamber 83. The antistatic agent prevents the element 89 from adhering to the cover tape 81 by means of static electricity. The antistatic agent is mainly applied to the cover tape 81 of the carrier tape 8 that houses small elements 89 (e.g., elements 89 with dimensions of 0.6 × 0.3 × 0.3 mm or less).

[0041] 3. Structure with guide 5 and peeling device 4

[0042] Next, refer to Figure 1 and Figure 2The structure of the tape guide 5 and the tape peeling device 4 will be described. As shown in Figure 1 Fig. 1, the tape guide 5 is provided in the upper portion of the feeder main body 2 in a downstream side in a detachable manner. The tape guide 5 constitutes the upper surface of the tape passage 24 that guides the tape 8 in a predetermined feeding direction. As shown in Figure 2 Fig. 2, the tape guide 5 is composed of a first top plate 51, a second top plate 54, a side plate 56, and a side plate 57. The side plates 56 and 57 are separated from each other and extend in parallel with the feeding direction of the tape 8. The side plates 56 and 57 are detachably held to the feeder main body 2.

[0043] The first top plate 51 and the second top plate 54 are flat plate-like members that are disposed apart from and in parallel with the bottom surface of the tape passage 24. The separation dimension of the first top plate 51 and the second top plate 54 from the bottom surface of the tape passage 24 is slightly larger than the thickness dimension of the tape 8. The tape 8 moves in the tape passage 24 formed by the separation dimension. The portion of the first top plate 51 in the upstream side is combined with the side plates 56 and 57 and occupies substantially the entire width of the feeder main body 2. The width dimension of the portion of the first top plate 51 in the downstream side is reduced and is disposed at the position of the side plate 56 in one side. The first top plate 51 is formed with cutout windows (52, 53) that enable the feeding holes 84 of the tape 8 to be visually recognized.

[0044] The tape guide 5 is urged downward by a force applying spring that is not shown. Thereby, the first top plate 51 presses the tape 8 against the bottom surface of the tape passage 24. Thus, the tape feeding mechanism 3 reliably engages the feeding holes 84 of the tape 8. In addition, the relative height of the tape 8 with respect to the tape peeling device 4 is stabilized. The second top plate 54 is combined with the side plate 57 in the other side of the downstream side from the first top plate 51. The portion of the second top plate 54 that corresponds to the component supply position 242 is cut away and opened. An opening portion 55 that extends in the feeding direction is formed between the first top plate 51 and the second top plate 54.

[0045] 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, and the like, as shown in Figure 2 Fig. 3. The peeling blade 41 is combined with the side plate 57 in the other side of the upstream side from the second top plate 54 in the opening portion 55. The peeling blade 41 has a leading end portion 42 and a blade tip 43. The leading end portion 42 is located at the upstream end of the peeling blade 41 and faces the upstream side. The leading end portion 42 is located between the two adhesive portions (85, 86) in the tape width direction. The leading end portion 42 is formed thin in the vertical direction, whereby it can easily enter between the base tape 82 and the cover tape 81.

[0046] The blade tip 43 extends from the front end portion 42 to a position of one of the adhesive portions 85. The blade tip 43 peels off one of the adhesive portions 85 and half-peels the cover tape 81 from the base tape 82. The blade tip 43 does not peel off the other adhesive portion 86. The blade tip 43 is formed so as to extend in a diagonally downstream direction with respect to the feeding direction and is formed thin in the vertical direction, whereby one of the adhesive portions 85 can be easily peeled off. The peeling blade 41 is capable of adjusting the height position so that the front end portion 42 and the blade tip 43 are appropriately and stably positioned with respect to the carrier tape 8 under the action of the urging spring.

[0047] 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 disposed in parallel above the second top plate 54. The tape folding member 45 gradually widens toward the downstream direction away from the peeling blade 41. The tape folding member 45 has a side edge 46 for folding back the cover tape 81 at the widened portion to open the chamber 83. The portion of the tape folding member 45 downstream is combined with the side plate 56 and the side plate 57 and occupies substantially the entire width of the feeder main body 2. The portion of the tape folding member 45 corresponding to the component supply position 242 is cut away to be open.

[0048] 4. Peeling operation of the tape peeling device 4

[0049] Next, the peeling operation of the tape peeling device 4 will be described with reference to Figure 2 and Figure 3 The tape peeling device 4 peels off one of the adhesive portions 85 and folds back the cover tape 81 to open the chamber 83 in the state that the other adhesive portion 86 is adhered while the carrier tape 8 is being fed.

[0050] In detail, when the tape feeding mechanism 3 is operated to feed the carrier tape 8 in the feeding direction, the front end of the carrier tape 8 approaches the peeling blade 41. When the carrier tape 8 is further fed and the front end thereof reaches the peeling blade 41, the front end portion 42 initially enters between the base tape 82 and the cover tape 81. When the carrier tape 8 is further fed, the front end portion 42 advances between the base tape 82 and the cover tape 81. In addition, the blade tip 43 obliquely abuts against the approaching adhesive portion 85 to cut it and half-peels the cover tape 81 from the base tape 82. Thus, the cover tape 81 is fed in the downstream direction in the half-peeled state that one of the adhesive portions 85 is peeled off and the other adhesive portion 86 is adhered.

[0051] As Figure 2As shown, the cover tape 81 after the half peeling passes over the upper side of the peeling blade 41. The cover tape 81 is erected above the upper side of the other adhesive portion 86 along the side surface of the peeling blade 41 as it is fed in the downstream direction. Also, the cover tape 81 is folded back toward the one side plate 56 along the side edge 46 of the tape folding member 45. Then, the cover tape 81 becomes in a 180° folded-back state at the component supply position 242. Thus, the chamber 83 is opened, and the supply of the component 89 can be performed. After the component 89 is taken out, the tape carrier 8 is fed in the downstream direction in a state where the cover tape 81 is adhered to the base tape 82 by the other adhesive portion 86.

[0052] As shown, the tape carrier 8 that has passed through the component supply position 242 is bent downward by substantially 90° at the downstream end of the tape passage 24 to be discharged to the outside, and is fed into the inside of the component mounting machine. A tape cutter and a recovery tank, which are not shown, are provided in the component mounting machine. The tape cutter operates at a predetermined operation timing, and cuts the tape carrier 8. The cut tape carrier 8 falls toward the recovery tank. Figure 1

[0053] 5. Detailed shape of the vicinity of the front end portion 42 of the peeling blade 41 and its function

[0054] Next, the detailed shape of the vicinity of the front end portion 42 of the peeling blade 41 will be described. The following description is based on trial production, experiments, and investigations performed on a tape carrier 8 having a width dimension Tw of 8 mm. In the following description, for convenience, the front end portion 42 of the peeling blade 41 is shown easily observable by marking a black circle. The height hs of the front end portion 42 is set to be 0.10 mm or more and 0.15 mm or less from the upper surface of the base tape 82. The front end portion 71 of the upper surface of the peeling blade 41 connected to the front end portion 42 is formed as a smooth curved surface in an upward convex shape. In the present embodiment, the front end portion 71 has a circular arc cross-sectional shape in a vertical cross section in the feeding direction. The radius r1 of the circular arc is 0.07 mm or more. Figure 4 Figure 4 The subsequent portion 72 on the downstream side of the front end portion 71 of the upper surface is smoothly connected to the front end portion 71. The subsequent portion 72 is formed as a slope shape that gradually becomes higher as it advances in the downstream direction, in other words, as a slope shape that gradually moves away from the upper surface of the base tape 82. The subsequent portion 72 does not need to be a slanted plane, and can be a shape including several bends or folds.

[0055] The subsequent portion 72 on the downstream side of the front end portion 71 of the upper surface is smoothly connected to the front end portion 71. The subsequent portion 72 is formed as a slope shape that gradually becomes higher as it advances in the downstream direction, in other words, as a slope shape that gradually moves away from the upper surface of the base tape 82. The subsequent portion 72 does not need to be a slanted plane, and can be a shape including several bends or folds.

[0056] ​​The stripper 41 is manufactured using a metal powder injection molding (MIM) method with a forming die. Therefore, the stripper 41 has some surface roughness. Thus, it is preferable to perform a smoothing surface treatment on at least a portion of the upper surface of the stripper 41 to reduce the possibility of damaging the contacted cover strip 81. Furthermore, as a surface treatment method, tumbling is preferred. However, based on experimental results from prototyping the detailed shape near the aforementioned tip 42, it is possible to suppress the generation of cutting fragments from the cover strip 81 even without surface treatment (described later).

[0057] A downstream end 58 of a first top plate 51 with a guide 5 is disposed on the upstream side of the peeling blade 41. The separation distance da between the downstream end 58 with the guide 5 and the front end 42 of the peeling blade 41 in the feed direction is in the range of 0.20 mm ± 0.05 mm. A chamfered portion 59 extending in the width direction is provided on the lower side of the downstream end 58. The chamfered portion 59 is formed as an inclined surface with a chamfer length a1 of 0.70 mm or more in the feed direction and a chamfer height a2 of 0.30 mm or more in the vertical direction. It is not limited to this, and the shape of the chamfered portion 59 can be changed.

[0058] Next, with Figure 7 The effect produced by the peeling blade 41 is illustrated in contrast to the conventional structure. In the conventional structure, the peeling blade 41X has an edge portion at the upper part of the upstream end portion 42X. Furthermore, the chamfered portion 59X of the guide member 5 is formed as an inclined surface, but compared to the embodiment, the chamfer length a1 and chamfer height a2 are smaller. Therefore, the cover tape 81 easily comes into contact with the edge portion of the front end portion 42X and is cut, easily producing cutting flakes. Especially in the case of a cover tape 81 coated with an antistatic agent, cutting flakes of the antistatic agent are more easily produced.

[0059] On the other hand, based on the detailed shape near the front end 42 of the aforementioned peeling blade 41, such as Figure 4 As shown, the cover tape 81, fed along the feed direction, begins to rise in the chamfered area 59. Then, the cover tape 81 moves while making contact with the following portion 72, with almost no contact with the leading edge portion 71. Therefore, the cover tape 81 does not contact the edge portion. Thus, the tape stripping device 4 has the effect of suppressing the generation of cutting flakes from the cover tape 81. Furthermore, the effect of suppressing the generation of cutting flakes becomes significant in the cover tape 81 coated with an antistatic agent. This effect has been confirmed experimentally. Moreover, by reducing the number of cutting flakes from the cover tape 81, the reliability of the component mounting machine's mounting operation is improved.

[0060] Further, in a case where the radius r1 of the circular arc of the tip end portion 71 is too small, there is a concern that the tip end portion 71 functions as an edge portion, and thus is not preferable. In addition, in a case where the separation distance da is too small, or in a case where the height hs of the tip end portion 42 is too large, the cover tape 81 can not smoothly start to rise, and thus is not preferable. On the other hand, as shown in FIG. 9, in a case where the separation distance daX is too large, the element 89 in the chamber 83 can float up and collide with the peeling knife 41, and thus is not preferable. In addition, in a case where the height hs of the tip end portion 42 is too small, there is a possibility that the tip end portion 42 cuts the base tape 82, and thus is not preferable. Figure 8

[0061] 6. First modification

[0062] Next, the first modification will be described with reference to FIG. 10. Figure 5 In the first modification, the shape of the peeling knife 41 is the same as that of the embodiment, and the chamfered portion 59 of the tape guide 5 is omitted. In the first modification, the movement path of the cover tape 81 is changed to come into contact with the tip end portion 71 and the subsequent portion 72 and move. Even so, the cover tape 81 does not come into contact with the edge portion. Thus, in the first modification, as in the embodiment, an effect of suppressing the generation of a cut piece of the cover tape 81 is produced. This effect is confirmed by experiments.

[0063] 7. Second modification

[0064] Next, the second modification will be described with reference to FIG. 11. Figure 6 In the second modification, the chamfered portion 59 of the tape guide 5 is the same as that of the embodiment, and the shape of the tip end portion 75 of the upper surface of the peeling knife 41 is modified from that of the embodiment. In the second modification, the tip end portion 75 has a cross-sectional shape of an elliptical arc in a vertical cross section in the feed direction. The long radius r2 of the major axis of the elliptical arc parallel to the feed direction is 0.07 mm or more, and the short radius r3 of the minor axis orthogonal to the feed direction is 0.05 mm or more. In the second modification, the cover tape 81 does not come into contact with the edge portion, and as in the embodiment, an effect of suppressing the generation of a cut piece of the cover tape 81 is produced. This effect is confirmed by experiments.

[0065] 8. Application and modification of the embodiment

[0066] ​Further, the effect of the tape peeling device 4 of the embodiment was confirmed by experiment with the carrier tape 8 having a width dimension Tw of 8 mm as an object. The structure of the tape peeling device 4 is not limited to this, and can be applied and modified as appropriate for a carrier tape 8 having a width dimension Tw other than 8 mm. Further, the cross-sectional shape of the leading end portion (71, 75) of the peeling blade 41 in the feed direction can be a smooth curve corresponding to a radius of curvature of 0.07 mm or more, and can be different from a circular arc or an elliptical arc. The embodiment, the first and second modified embodiments can be variously applied and modified in addition to this.

[0067] BRIEF DESCRIPTION OF DRAWINGS

[0068] 1: tape feeder 2: feeder main body 24: tape passage 3: tape feed mechanism 4: tape peeling device 41, 41X: peeling blade 42, 42X: leading end portion 43: blade tip 5: tape guide 51: first top plate 56, 57: side plate 58: downstream end portion 59, 59X: chamfered portion 6: feeder control section 71: leading end portion 72: subsequent portion 75: leading end portion 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: long radius r3: short radius da: separation distance a1: chamfer length a2: chamfer height

Claims

1. A stripping device comprising a stripping blade disposed in the belt path of a belt feeder that feeds a carrier belt along a predetermined feed direction, and stripping a cover belt from a base belt, the carrier belt being configured to include: The baseband has multiple chambers for housing elements; The cover strip is bonded to the base strip by two adhesive portions extending along the strip length direction and separated by multiple chambers. The strip peeling device is characterized in that... The front end portion of the upper surface of the peeling blade, which is connected to the front end of the upstream side of the feed direction, is formed into a smooth curved surface with an upward convex shape.

2. The peeling device according to claim 1, characterized in that, The peeling blade has: a front end portion located between the two adhesive portions; and a blade tip extending from the front end portion to a position on one of the two adhesive portions to peel off one of the two adhesive portions.

3. The peeling device according to claim 1, characterized in that, The front portion of the upper surface has an arc-shaped cross-section in the vertical section of the feed direction.

4. The peeling device according to claim 3, characterized in that, The front portion of the upper surface has a cross-sectional shape in the vertical section of the feed direction with a radius of the arc of 0.07 mm or more.

5. The peeling device according to claim 1, characterized in that, The front portion of the upper surface has an elliptical arc cross-sectional shape in the vertical section of the feed direction.

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

7. The peeling device according to claim 1, characterized in that, The front end of the stripping blade is located at a height of more than 0.10 mm and less than 0.15 mm from the upper surface of the baseband.

8. The stripping device according to any one of claims 1 to 7, characterized in that, At least a portion of the upper surface of the peeling blade is subjected to a smoothing surface treatment.

9. The stripping device according to any one of claims 1 to 7, characterized in that, The subsequent portion of the upper surface of the stripping blade, which is smoothly connected from the front end to the downstream side, is formed such that it gradually moves away from the upper surface of the baseband as it moves downstream.

10. The peeling device according to claim 1, characterized in that, The downstream end of the guide member, which is disposed on the upstream side of the peeling blade and forms the upper surface of the passage, is separated from the front end of the peeling blade in the feed direction by a distance of 0.20 mm ± 0.05 mm.

11. The peeling device according to claim 1, characterized in that, The belt guide, which is disposed on the upstream side of the stripping blade and forms the upper surface of the belt passage, has a chamfered portion on the lower side of its downstream end that extends in a width direction intersecting the feed direction.

12. The peeling device according to claim 11, characterized in that, The chamfered portion is formed as an inclined surface with a chamfer length of 0.70 mm or more in the feed direction and a chamfer height of 0.30 mm or more in the vertical direction.

13. The stripping device according to any one of claims 4, 6, 7, 10, and 12, characterized in that, The cover strip is made of plastic film with a thickness ranging from 0.05 mm to 0.07 mm.

14. The peeling device according to claim 13, characterized in that, The cover strip is coated with an antistatic agent on the surface facing the chamber.

15. A belt feeder, characterized in that, have: The stripping device according to any one of claims 1 to 7; The band passage; and The belt feeding mechanism feeds the carrier belt along the feeding direction.

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