CN111386756A

CN111386756A - Belt feeder

Info

Publication number: CN111386756A
Application number: CN201780097242.9A
Authority: CN
Inventors: 仙崎真昭; 川谷隆
Original assignee: Fuji Machine Manufacturing Co Ltd
Current assignee: Fuji Corp
Priority date: 2017-12-26
Filing date: 2017-12-26
Publication date: 2020-07-07
Anticipated expiration: 2037-12-26
Also published as: JP6999698B2; WO2019130450A1; CN111386756B; JPWO2019130450A1

Abstract

The tape feeder comprises: a transport path into which a carrier tape including a base tape having a plurality of cavity sections for storing components and a cover tape bonded to the base tape and covering the cavity sections is inserted and which guides at least the base tape to a component supply position; a tape feeding section that feeds the carrier tape along the transport path; a tape stripping section for stripping the cover tape from the base tape at a stripping position on the front side of the component feeding position in the transport path to open the cavity; and a magnetic flux changing unit disposed on the front side of the separating position in the conveying path, for changing the magnetic flux acting on the element.

Description

Belt feeder

Technical Field

The present specification relates to a tape feeder that supplies components using a carrier tape.

Background

As a substrate-to-substrate working machine that produces a substrate on which many components are mounted, there are a solder printer, a component mounter, a reflow soldering machine, a substrate inspection machine, and the like. The substrate production line is generally configured by connecting these substrate working machines. Among these, many component mounting machines are provided with a tape feeder that supplies components using a carrier tape. The carrier tape is formed by attaching a cover tape to a base tape having a cavity. The components housed in the cavity may be attached to the cover tape. Therefore, when the cover tape is peeled off from the base tape to open the cavity, there is a problem that the components are damaged or scattered. Patent document 1 discloses an example of a technique related to posture stabilization of an element housed in a cavity.

In the component feeding device of patent document 1, the permanent magnet is disposed at a position below the component between the peeling position of the cover tape and the component feeding position so that the S-pole and the N-pole face each other. This can stabilize the suction posture of the element at a position after the opening of the cavity.

Prior art documents

Patent document 1: japanese laid-open patent publication No. 2006-186078

However, the technique of patent document 1 is preferable in that the suction posture of the component in the component feeding position can be stabilized, but in the technique of patent document 1, the component attached to the cover tape cannot be dropped before the cover tape is peeled. In particular, when the carrier tape is stored for a long period of time, the adhesion of the component to the cover tape tends to increase, and the component does not fall off, which is a problem.

The above problem occurs in the following configuration: in the peeling position, only one side of the adhesive part of the cover tape in the tape width direction is peeled, and the cover tape is folded back to the other side of the adhesive part. In this configuration, there is a possibility that the components attached to the cover tape may be damaged by the impact of the exfoliating knife. The above problem also occurs in the following structure: the cover tape is pulled back in the opposite direction at the stripping position to completely strip from the base tape. In this configuration, components attached to the cover tape may be lost during stripping of the cover tape.

Disclosure of Invention

In the present specification, an object to be solved is to provide a tape feeder capable of reliably dropping a component attached to a cover tape before peeling the cover tape.

The present specification discloses a belt feeder, including: a transport path into which a carrier tape including a base tape having a plurality of cavity sections for housing components and a cover tape bonded to the base tape so as to cover the cavity sections is inserted and which guides at least the base tape to a component supply position; a tape feeding unit configured to feed the carrier tape along the transport path; a tape peeling section for peeling the cover tape from the base tape at a peeling position on a front side of the component supply position in the transport path to open the cavity; and a magnetic flux changing unit disposed on the front side of the conveyance path with respect to the separation position, and configured to change magnetic flux acting on the element.

Effects of the invention

In the tape feeder disclosed in the present specification, the magnetic flux acting on the element is changed by the magnetic flux changing section disposed on the front side of the peeling position. Therefore, the component attached to the cover tape is swung by the change in the magnetic flux, and reliably falls down before the cover tape is peeled at the peeling position.

Drawings

Fig. 1 is a plan view schematically showing the overall configuration of a component mounting apparatus including a tape feeder according to a first embodiment.

Fig. 2 is a side view schematically showing a tape feeder.

Fig. 3 is a plan view illustrating a structure of the tape peeling section and a peeling operation.

Fig. 4 is a plan view showing only the carrier tape in fig. 3.

Fig. 5 is a sectional view of the carrier tape viewed from a V-V direction in fig. 4.

Fig. 6 is a perspective view schematically showing the structure of the magnetic flux changing portion.

Fig. 7 is a side cross-sectional view showing a state in which components attached to the cover tape are positioned directly above the N-pole.

Fig. 8 is a side cross-sectional view showing a state in which components attached to the cover tape are positioned slightly above the N-pole.

Fig. 9 is a side cross-sectional view showing components attached to the cover tape positioned directly above the magnetic pole boundaries.

Fig. 10 is a side cross-sectional view showing components attached to the cover tape at a position slightly past the boundaries of the magnetic poles.

Fig. 11 is a plan view schematically showing a magnetic flux changing portion of the tape feeder according to the second embodiment.

Fig. 12 is a plan view schematically showing a magnetic flux changing unit and a magnetic flux stabilizing unit of the tape feeder according to the third embodiment.

Detailed Description

1. Integral structure of component mounting machine 1

A tape feeder 3 of a first embodiment will be described with reference to fig. 1 to 10. Fig. 1 is a plan view schematically showing the overall configuration of a component mounting apparatus 1 including a tape feeder 3 according to a first embodiment. The direction from the left side to the right side of the drawing sheet in fig. 1 is the X-axis direction of the transport substrate K, and the direction from the lower side to the upper side of the drawing sheet is the Y-axis direction (front-rear direction). The component mounter 1 is configured by assembling a substrate conveying device 2, a plurality of tape feeders 3, a component transfer device 4, a component camera 51, a control device 52, and the like on a base 10. The substrate transport apparatus 2, the tape feeders 3, the component transfer apparatus 4, and the component camera 51 are controlled by the control device 52 to perform predetermined operations.

The substrate transport apparatus 2 includes a pair of

guide rails

21 and 22, a pair of conveyor belts, a substrate clamping mechanism, and the like. The conveyor belt carries the substrate K to the mounting position by rotating along the

guide rails

21 and 22 in a wheel-like manner in a state where the substrate K is loaded. The substrate clamping mechanism lifts and clamps the substrate K at the mounting position for positioning.

The plurality of tape feeders 3 are arranged on a tray rack 11 on the upper surface of the machine table 10. The tape feeder 3 holds a reel 39 on the front side of the main body 31. The component supply position 32 is set at an upper portion of the main body portion 31 on the rear side. The carrier tape 8 is wound around the tape reel 39 (see fig. 4 and 5).

The component transfer apparatus 4 is an XY robot type apparatus that can move horizontally in the X-axis direction and the Y-axis direction. The component transfer device 4 is constituted by a head driving mechanism 40, a mounting head 44, a nozzle tool 45, a nozzle 46, a board camera 47, and the like. The head drive mechanism 40 includes a pair of Y-

axis rails

41 and 42, a Y-axis slider 43, and a drive motor not shown. A mounting head 44 is provided on the Y-axis slider 43. The head driving mechanism 40 drives the mounting head 44 in the horizontal direction, i.e., the X-axis direction and the Y-axis direction.

The suction nozzle tool 45 is held by the mounting head 44. The nozzle tool 45 has one or more nozzles 46. The suction nozzle 46 sucks the component with the negative pressure. The board camera 47 is provided in the mounting head 44 in parallel with the nozzle tool 45. The substrate camera 47 images a position reference mark attached to the substrate K to detect an accurate mounting position of the positioned substrate K.

The component camera 51 is provided upward on the upper surface of the base 10 between the substrate transport apparatus 2 and the tape feeder 3. The component camera 51 takes an image of the state of the component attached to the suction nozzle 46 while the mounting head 44 is moving from the tape feeder 3 to the substrate K. The control device 52 is mounted on the machine 10, and its arrangement position is not particularly limited. The control device 52 is a computer device having a CPU and operating by software. The control device 52 controls the installation work according to an installation program stored in advance.

2. Structure of tape feeder 3 of first embodiment

Next, the detailed structure of the tape feeder 3 will be described. Fig. 2 is a side view schematically showing the belt feeder 3. The tape feeder 3 includes: a main body 31, a conveying path 34, a tape feed portion 35, a tape separating portion 7, and a magnetic flux changing portion 6. A tape insertion opening 33 is disposed near the middle height of the front side of the main body 31. The conveying path 34 extends from the tape insertion port 33 to the component supply position 32. The conveyance path 34 is formed in a track shape having a rectangular groove opening upward. The material for forming the conveyance path 34 is a non-magnetic material such as copper or resin that is not affected by magnetic flux. The conveying path 34 guides at least the base tape 82 (see fig. 4 and 5) to the component supply position 32.

The tape feeding section 35 feeds the carrier tape 8 along the conveying path 34. The tape feeding unit 35 is disposed below the conveying path 34. The tape feeding unit 35 is constituted by four sprockets, two servo motors, and the like, which are not shown. Specifically, the first sprocket 351 and the second sprocket 352 are rotatably provided below the vicinity of the component supply position 32 in the conveying path 34. The teeth of the first sprocket 351 and the second sprocket 352 protrude from holes formed in the bottom surface of the conveyance path 34 and are fitted into the sprocket holes 84 of the carrier tape 8. The first sprocket 351 and the second sprocket 352 are synchronously driven by a front servo motor, and can be switched between normal rotation and reverse rotation.

The third sprocket 353 and the fourth sprocket 354 are rotatably provided on a lower side of the conveyance path 34 near the front side of the tape insertion port 33. The teeth of the third sprocket 353 and the fourth sprocket 354 protrude from holes formed in the bottom surface of the conveyance path 34 and are fitted into the sprocket holes 84 of the carrier tape 8. The third sprocket 353 and the fourth sprocket 354 are synchronously driven by a rear servo motor, not shown, and can be switched between normal rotation and reverse rotation.

On the front side of the tape insertion port 33, a reel 39 around which the carrier tape 8 is wound is rotatably supported. The four sprockets (351, 352, 353, 354) realize an automatic loading function when driven in a normal rotation. Thereby, the leading end of the carrier tape 8 is fed to the component supply position 32. In addition, the four sprockets (351, 352, 353, 354) realize an automatic discharge function when driven in reverse. Thereby, the front end of the carrier tape 8 is returned to the front side of the fourth sprocket 354.

Fig. 3 is a plan view illustrating the structure and the peeling operation of the tape peeling unit 7. In addition, fig. 4 is a plan view showing only the carrier tape 8 in fig. 3. In fig. 3 and 4, cover tapes 81 constituting the carrier tape 8 are hatched for convenience. The adhesive portion 85, the adhesive portion 86, and the element 89 are illustrated in black for convenience. Fig. 5 is a sectional view of the carrier tape 8 viewed from the V-V direction in fig. 4.

The carrier tape 8 is composed of a cover tape 81 and a base tape 82. A large number of rectangular hole-like cavity portions 83 are provided at equal intervals in the belt longitudinal direction at positions of the bottom belt 82 that are offset from the center in the belt width direction toward one side edge. The element 89 is housed in each cavity 83. The wide variety of the elements 89, made of iron, will receive an attractive force from the applied magnetic flux. A plurality of sprocket holes 84 are formed at equal intervals in the belt longitudinal direction at positions of the bottom belt 82 that are offset toward the other side edge.

The cover tape 81 is bonded to the upper surface of the base tape 82 in a peelable manner. Specifically, an adhesive portion 85 extending in the tape longitudinal direction is provided between the cavity portion 83 and one side edge of the bottom tape 82. Further, an adhesive portion 86 extending in the belt longitudinal direction is provided between the cavity portion 83 of the bottom belt 82 and the sprocket hole 84. Both sides of the cover tape 81 in the tape width direction are bonded to the two

bonding portions

85, 86. The width dimension of the cover tape 81 is smaller than the width dimension of the base tape 82. The cover tape 81 covers the cavity portion 83 but does not cover the sprocket hole 84.

The element 89 is oversized relative to the width of the interior of the cavity 83. Therefore, the element 89 moves forward, backward, left, and right in the cavity 83. Further, the element 89 has a height that is more than the height of the inside of the cavity 83. Thus, the element 89 moves up and down in the cavity 83. Elements 89 are sometimes attached to the cover tape 81. The cause of the adhesion may be, for example, an influence of a load when the tape reel 39 is stored or static electricity generated in the cover tape 81.

The tape peeling section 7 is disposed from the front side to the rear side of the component supply position 32. The tape peeling section 7 is constituted by two

side plates

77, 78, a first tape guide 71, a second tape guide 72, a peeling blade 73, a tape folding plate 74, and the like. The two

side plates

77 and 78 are erected across the conveyance path 34. The first belt guide 71 and the second belt guide 72 are thin plate-like members. The first belt guide 71 and the second belt guide 72 are arranged in parallel spaced apart above the conveyance path 34. The separation dimension between the first and second tape guides 71 and 72 and the conveyance path 34 is slightly larger than the thickness of the carrier tape 8. The carrier tape 8 passes between the separation sizes.

The front portion of the first belt guide 71 is bridged between the two

side plates

77, 78. The rear portion of the first belt guide 71 is disposed offset to the other side plate 78. A long circular sprocket hole window 711 is formed in the rear of the first belt guide 71. The sprocket hole window 711 allows the sprocket hole 84 of the carrier tape 8 to be visually observed. Cutout windows with reference numerals omitted are also formed in other plural positions of the first tape guide 71. The cutout window allows the carrier tape 8 to be visually observed.

The second tape guide 72 is arranged in a row in the rear of the first tape guide 71 and attached to one side plate 77. The second tape guide 72 has a cut-out portion corresponding to the component supply position 32. An opening 75 extending in the front-rear direction is formed between the first belt guide 71 and the second belt guide 72. The front side of the opening 75 is formed between the first belt guide 71 and one side plate 77, and is wide in opening in the width direction. The rear side of the opening portion 75 is formed between the first belt guide 71 and the second belt guide 72, and is opened narrow in the width direction. The rear side of the opening 75 extends to the component supply position 32.

The peeling blade 73 is attached to one side plate 77 so as to protrude in the width direction, and is disposed on the front side of the opening 75. The peeling blade 73 is formed to have a narrow width at the tip and a thin top-bottom, and a wide width at the tail and a thick top-bottom. The peeling blade 73 is disposed so that the tip thereof faces the carrier tape 8. Further, the peeling blade 73 is adjusted in the arrangement height so that the leading end thereof enters between the base tape 82 and the cover tape 81.

The belt folding back plate 74 is configured to be attached to the end of the peeling blade 73. The belt folding back plate 74 extends from one side plate 77 in the width direction. The tape return plates 74 are spaced apart and parallel on the upper sides of the first and second tape guides 71 and 72. The belt folding plate 74 gradually widens as it goes toward the rear away from the peeling blade 73. That is, the belt folded-back plate 74 has a side edge 741 having a tapered shape. The side edge 741 folds back the fed cover tape 81 to open the cavity 83. The separation dimension between the tape folding-back plate 74 and the first tape guide 71 is adjusted to satisfactorily fold back the cover tape 81. The tape-folding plate 74 cuts out a portion corresponding to the component feeding position 32.

Next, the operation of separating the tape separating section 7 will be described. When the carrier tape 8 is fed to the tape peeling section 7, the leading end of the carrier tape 8 and the peeling blade 73 face each other. When the carrier tape 8 is further fed, the exfoliating knife 73 enters between the base tape 82 and the cover tape 81 and travels between the tapes. In the present embodiment, the peeling blade 73 peels off the adhesive portion 85 on one side in the tape width direction of the cover tape 81, and does not peel off the adhesive portion 86 on the other side. Therefore, the cover tape 81 is fed in a state where one of the adhesive portions 85 is peeled off and the other adhesive portion 86 is adhered.

The cover tape 81 rises upward along the side surface of the exfoliating knife 73 to the other adhesive part 86 as it advances from the rear side to the front side of the opening part 75. The cover tape 81 is folded back in the direction of the other side plate 78 along the tapered side edge 741 of the tape folding plate 74. Finally, the chamber 83 is opened, and the component 89 can be sucked at the component supply position 32. After the components 89 are adsorbed, the carrier tape 8 is directly discharged to the front of the tape feeder 3 in a state where the cover tape 81 is bonded to the base tape 82.

The magnetic flux changing portion 6 is disposed below the conveying path 34 and on the front side of the separation position of the tape separation portion 7 (the position of the separation blade 73). Fig. 6 is a perspective view schematically showing the structure of the magnetic flux changing unit 6. As shown in the drawing, the magnetic flux changing portions 6 are formed such that N magnetic poles and S magnetic poles are alternately arranged in the traveling direction of the carrier tape 8 (hereinafter simply referred to as the tape traveling direction).

Specifically, the magnetic flux changing unit 6 is formed of a single magnetic member formed by magnetizing a plurality of (four in the example of fig. 6) N-pole and S-pole sets. Such a magnetic member is commercially available under the name of a magnet piece or the like, and is low in cost. The magnetic flux changing unit 6 changes the magnetic flux acting on the components 89 according to the positions of the components 89 in the traveling direction of the carrier tape 8. The change in magnetic flux changes at least one of the magnitude and direction of the attractive force acting on the element 89.

The magnetic flux changing unit 6 may be configured by arranging a plurality of permanent magnets. The magnetic flux changing unit 6 may be configured using an electromagnet. The magnetic flux changing unit 6, which is formed of an electromagnet, can change the magnetic flux acting on the element 89 by changing the applied voltage without moving the element 89. However, considering cost, workability of assembly, ease of handling, and the like, the magnetic flux changing portion 6 formed of a single magnetic member is more excellent than a structure in which a plurality of permanent magnets are arranged in line and a structure in which an electromagnet is used.

3. Operation and effect of tape feeder 3 of the first embodiment

Next, the operation and effect of the main magnetic flux changing portion 6 of the tape feeder 3 according to the first embodiment will be described. When the carrier tape 8 is fed by the tape feed section 35, the relative positional relationship between the components 89 and the magnetic flux changing section 6 changes in the tape traveling direction. For example, the relative positional relationship changes in time series from fig. 7 to fig. 10 via fig. 8 and 9.

Fig. 7 is a side cross-sectional view showing a state in which components 89 attached to the cover tape 81 are positioned directly above the N-pole. Fig. 8 is a side cross-sectional view showing a state in which the components 89 attached to the cover tape 81 are positioned slightly above the N-pole. Fig. 9 is a side cross-sectional view showing a state in which components 89 attached to the cover tape 81 are positioned directly above the magnetic pole boundaries. Fig. 10 is a side cross-sectional view showing components 89 attached to the cover tape 81 at a position slightly past the boundaries of the magnetic poles. In the following description, attention is directed to the element 89 attached to the center of the cover tape 81 among the three elements 89 shown in fig. 7 to 10.

In the state shown in fig. 7, the element 89 receives an attractive force F1 in the directly-downward direction from the N pole directly below. At the same time, the element 89 receives the obliquely downward attracting force F2 and the obliquely downward attracting force F3 from the two S magnetic poles before and after the tape traveling direction. The attractive forces F2 and F3 are equal in magnitude and opposite in direction. As shown in the drawing, the attraction force component in the horizontal direction of the total attraction force FT1 vector-synthesized from the attraction force F1, the attraction force F2, and the attraction force F3 is cancelled out and directed directly downward. Thereby, the element 89 is attracted in the directly downward direction. Also, if the total attraction force FT1 is greater than the adhesion of the components 89 to the cover tape 81, the components 89 fall off.

In the state shown in fig. 8, the element 89 receives an attractive force F4 obliquely downward from the N-pole on the rear side in the tape running direction, and receives an attractive force F5 obliquely downward from the S-pole on the front side in the tape running direction. The attractive force F4 is greater than the attractive force F5 and is opposite in direction to the attractive force F5. As shown in the drawing, total attraction force FT2 obtained by vector-combining attraction force F4 and attraction force F5 has not only a downward attraction force component but also a rearward attraction force component in the belt traveling direction.

In the state shown in fig. 9, the element 89 receives an attractive force F6 obliquely downward from the N-pole on the rear side in the tape running direction, and receives an attractive force F7 obliquely downward from the S-pole on the front side in the tape running direction. The attractive forces F6 and F7 are equal in magnitude and opposite in direction. As shown in the drawing, the attraction force component in the horizontal direction of total attraction force FT3 obtained by vector-combining attraction force F7 and attraction force F8 is cancelled out and directed in the direct downward direction.

In the state shown in fig. 10, the element 89 receives an attractive force F8 obliquely downward from the N-pole on the rear side in the tape running direction, and receives an attractive force F9 obliquely downward from the S-pole on the front side in the tape running direction. The attractive force F8 is less than the attractive force F9 and is opposite in direction to the attractive force F9. As shown in the drawing, total attraction force FT4 vector-synthesized by attraction force F8 and attraction force F9 has not only a downward attraction force component but also a forward attraction force component in the belt traveling direction.

Thereafter, the same actions as those in fig. 7 to 10 are repeated. The element 89 is subjected not only to a downward attractive force component but also to alternately a rearward and forward attractive force component in the belt travel direction. Thereby, the component 89 swings back and forth in the tape advancing direction, and the attachment surface with the cover tape 81 is opened from the end. Therefore, even in the case where the total attraction force FT1 is smaller than the adhesion force of the elements 89, the elements 89 are separated and fall from the cover tape 81 due to the swing.

That is, the components 89 attached to the cover tape 81 are swung by the change in magnetic flux and reliably fall down before the cover tape 81 is peeled at the peeling position. Therefore, the component 89 does not collide with the exfoliating knife 73 in a state of being attached to the cover tape 81, and is not damaged by the exfoliating knife 73. In addition, strictly speaking, the attraction of the poles away from the element 89 also has an effect. Even in this case, the attraction force components in the belt traveling direction toward the rear and toward the front alternately act.

In addition, the smaller components 89 are susceptible to attachment to the cover tape 81. Therefore, the arrangement pitch Pm of the N-pole and the S-pole shown in fig. 6 is preferably set based on the minimum value of the sizes of the various elements 89 having different sizes. In addition, the formation pitch Pc of the cavity portion 83 varies depending on the size of the element 89. Therefore, the arrangement pitch Pm may be set based on the formation pitch Pc of the cavity portion 83. In the example of fig. 5, the arrangement pitch Pm is set to be substantially equal to the formation pitch Pc.

If the arrangement pitch Pm is too small, a plurality of magnetic poles face one element 89. In this case, the attraction component in the belt traveling direction does not occur significantly, and the above-described action does not occur. If the arrangement pitch Pm is excessively large, the number of magnetic poles constituting the magnetic flux changing portion 6 is limited. In this case, the number of times of wobbling of the component 89 attached to the cover tape 81 is reduced, and the chance of falling is reduced.

The magnetic flux changing unit 6 is detachable. This allows the magnetic flux changing portion 6 to be removed from the element 89 that is not affected by the magnetic flux. The magnetic flux changing unit 6 can be attached to a conventional tape feeder. Thus, even in the tape feeder 3 that has been operated at the delivery location, the configuration of the first embodiment can be implemented.

4. Tape feeder of second embodiment

Next, a tape feeder of a second embodiment will be described. The tape feeder of the second embodiment is different from the first embodiment in the configuration of the magnetic flux changing portion 6A, and is the same as the first embodiment in other configurations. Fig. 11 is a plan view schematically showing a magnetic flux changing portion 6A of the tape feeder according to the second embodiment.

As shown in the drawing, the magnetic flux changing portion 6A is disposed at a position below the conveying path 34 and on the near side in the tape advancing direction with respect to the separation position of the tape separating portion 7 (the position of the separation blade 73). The magnetic flux changing portion 6A is formed by arranging only a plurality of N magnetic poles at intervals in the belt traveling direction. For example, the magnetic flux changing portion 6A is formed by arranging a plurality of permanent magnets with their N-poles facing upward and spaced apart from each other.

In the second embodiment, the absolute value of the attraction force of the magnetic flux changing portion 6A attracting the element 89 is reduced as compared with the first embodiment. Even so, the effect of alternately generating the attraction force components toward the rear and toward the front in the belt traveling direction is similarly generated. Therefore, in the second embodiment, the components 89 attached to the cover tape 81 are also swung by the change in magnetic flux, and reliably fall down before the cover tape 81 is peeled at the peeling position. In addition, the magnetic flux changing portion 6A may be formed by arranging only a plurality of S magnetic poles at intervals in the belt traveling direction.

5. Tape feeder of third embodiment

Next, a tape feeder according to a third embodiment will be described. The tape feeder of the third embodiment is the tape feeder 3 of the first embodiment to which a magnetic flux stabilizing section 9 is added. Fig. 12 is a plan view schematically showing the magnetic flux changing unit 6 and the magnetic flux stabilizing unit 9 of the tape feeder according to the third embodiment. As shown in the drawing, the magnetic flux stabilizing section 9 is disposed below the conveying path 34 between the separation position of the tape separation section 7 (the position of the separation blade 73) and the magnetic flux changing section 6.

The magnetic flux stabilizing section 9 is formed by arranging N and S magnetic poles, which are long in the belt traveling direction, in the width direction of the conveying path 34. The magnetic flux stabilizing section 9 stabilizes the magnetic flux acting on the element 89 regardless of the position of the element 89 in the belt traveling direction. The steady magnetic flux causes a downward attractive force to act on element 89. Therefore, the element 89 which falls on the bottom surface of the cavity portion 83 when passing through the magnetic flux changing portion 6 and the element 89 which is located on the bottom surface of the cavity portion 83 from the beginning are stabilized in posture by the magnetic flux of the magnetic flux stabilizing portion 9. In addition, reattachment of the dropped components 89 to the cover tape 81 is prevented. The magnetic flux stabilizing unit 9 can be extended to the component supply position 32.

6. Applications and variants of the embodiments

The position of the magnetic flux changing portions (6, 6A) is not limited to the lower side of the conveyance path 34. For example, even if the magnetic flux changing portion is provided on the side surface of the conveying path 34, the element 89 swings due to the change of the magnetic flux acting thereon, and thus the same operation as that of the embodiment is obtained. In addition, although the tape peeling section 7 of the embodiment peels only the adhesive section 85 on one side, a structure may be employed in which the adhesive sections (85, 86) on both sides are peeled and the cover tape 81 is pulled back in the opposite direction. The first to third embodiments can be applied to various other applications and modifications.

Description of the reference numerals

1: the component mounting machine 3: the tape feeder 31: main body portion 32: component supply position 33: tape insertion port 34: conveyance path 35:

tape feeding portions

6, 6A: magnetic flux changing unit 7: tape peeling section 73: a stripping knife 8: the carrier tape 81: cover tape 82: bottom belt 83: cavity portions 85, 86: bonding portion 89: element 9: magnetic flux stabilizing sections F1 to F9: attraction force FT 1-FT 4: total attraction Pm: configuration pitch Pc: a pitch is formed.

Claims

1. A tape feeder includes:

a transport path into which a carrier tape including a base tape having a plurality of cavity sections for housing components and a cover tape bonded to the base tape so as to cover the cavity sections is inserted and which guides at least the base tape to a component supply position;

a tape feeding section that feeds the carrier tape along the transport path;

a tape stripping section configured to strip the cover tape from the base tape at a stripping position on a front side of the component supply position in the transport path and open the cavity; and

and a magnetic flux changing unit disposed on the front side of the conveyance path with respect to the separation position, and configured to change a magnetic flux acting on the element.

2. The tape feeder of claim 1,

the magnetic flux changing portion is disposed below the conveying path.

3. The tape feeder of claim 1 or 2,

the N-magnetic poles and the S-magnetic poles are alternately arranged in the traveling direction of the carrier tape to form the magnetic flux changing portion.

4. The tape feeder of claim 3,

the magnetic flux changing portion is a magnetic member formed by magnetizing the plurality of sets of N-poles and S-poles.

5. The tape feeder of claim 3 or 4,

the formation pitch of the cavity portion of the carrier tape differs depending on the size of the component,

the arrangement pitch of the N-poles and the S-poles is set based on the minimum value of the size of the element or the minimum value of the formation pitch of the cavity portion.

6. The tape feeder of claim 1 or 2,

the magnetic flux changing portion is formed by disposing only one of the plurality of N magnetic poles and the plurality of S magnetic poles at intervals in a traveling direction of the carrier tape.

7. The tape feeder of any one of claims 1 to 6,

the magnetic flux changing unit can be attached to or detached from an existing tape feeder.

8. The tape feeder according to any one of claims 1 to 7, further comprising:

and a magnetic flux stabilizing section disposed below the transport path between the peeling position and the magnetic flux changing section, and configured to stabilize the magnetic flux acting on the component regardless of the position of the component in the traveling direction of the carrier tape.

9. The tape feeder of any one of claims 1 to 8,

both sides of the cover tape in the tape width direction are bonded to the base tape, and the tape peeling section peels only one side of the cover tape in the tape width direction.