Component supply device

Abstract

To suppress the occurrence of defects caused by a component adhering to a cover tape when the cover tape is peeled off from a carrier tape.SOLUTION: A tape feeder includes a tape cover 40, an air ejection part 61, and a magnet member 90. The tape cover 40 includes a slit part 42 having a guide edge 44 that guides an extended part ES of a cover tape TT extending from the tip of a carrier tape CT upward away from a transport path 22, and an opposing edge 45 opposite to the guide edge. The air jet part 61 jets air from below the tape cover 40 and blows up the extended part ES of the carrier tape CT to move it from the slit part 42 to the upper side of the tape cover 40. The magnet member 90 is positioned from the upstream side to the downstream side of the slit part 42 below the slit part 42, and pulls a component BH inside the carrier tape CT passing through below the slit part 42 downward.SELECTED DRAWING: Figure 13

Description

[Technical Field]

[0001] The present invention relates to a component supplying device that supplies components to a component mounting device. [Background technology]

[0002] Conventionally, a component mounting device for producing a mounted board, in which components are mounted on a substrate, is configured with a component supplying device that supplies components and a mounting head that picks up the components supplied by the component supplying device and mounts them on the substrate. The component supplying device, for example, uses a tape feeder that supplies components using a carrier tape. The carrier tape has a configuration in which components are stored in a row of pockets and are covered with a cover tape. The tape feeder includes a transport mechanism that transports the carrier tape toward a component removal position and a tape cover that covers from above the area of the transported carrier tape near the component removal position. The tape cover has an opening (component removal opening) through which components can be removed at the component removal position, and the cover tape is peeled off from the carrier tape just before it reaches the component removal opening.

[0003] In the tape feeder described in Patent Document 1 below, a configuration for initially peeling the cover tape from the carrier tape (initial peeling) involves blowing up a portion (extension) of the cover tape extending from the tip of the carrier tape with air, and the blown-up extension passes through a slit formed in the tape cover and moves above the tape cover. After initial peeling is performed in this manner, the downstream edge constituting the slit is in a state where it is inserted between the carrier tape and the cover tape, and thereafter, when the carrier tape is transported, the cover tape is peeled off from the carrier tape by the transport operation. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-74031 Summary of the Invention [Problem to be solved by the invention]

[0005] However, components inside the pockets of the carrier tape are usually in contact with the bottom of the pocket due to their own weight, but if the components become charged due to static electricity or the like, they may stick to the backside of the cover tape. If the cover tape is peeled off from the carrier tape in this state, the components stuck to the cover tape will pass through the slit together with the cover tape, leaving the pocket empty, which could result in a pickup error where the mounting head is unable to pick up the components, or the components may collide with the edge of the slit as the cover tape passes through the slit and be damaged.

[0006] Therefore, an object of the present invention is to provide a component supply device that can suppress the occurrence of problems caused by components remaining attached to the cover tape when the cover tape is peeled off from the carrier tape. [Means for solving the problem]

[0007] a tape cover provided on the upstream side of the carrier tape conveying path from above, the tape cover having a guide edge that guides an extension portion of the cover tape extending from the leading end of the carrier tape in a direction away from the conveying path at a position upstream of the component removal position, the guide edge being an extension portion of the cover tape extending from the leading end of the carrier tape, in a direction away from the conveying path at a position upstream of the component removal position; an air blowing unit that blows air from below the tape cover to blow up the extension portion of the carrier tape conveyed along the conveying path and move it above the tape cover through a slit portion between the guide edge and the opposite edge; and a magnet member that is located in a region below the slit portion, spanning from the upstream side to the downstream side of the slit portion, and that attracts downward the components in the carrier tape passing below the slit portion. [Effects of the Invention]

[0008] According to the present invention, it is possible to suppress the occurrence of defects caused by components remaining stuck to the cover tape when the cover tape is peeled off from the carrier tape. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of a component mounting device equipped with a tape feeder according to an embodiment of the present invention; [Figure 2] (a) and (b) are perspective views of the leading end of a carrier tape fed by a tape feeder according to an embodiment of the present invention. [Figure 3] FIG. 1 is a side view of a tape feeder according to an embodiment of the present invention; [Figure 4] FIG. 1 is a side view of a portion of a tape feeder according to an embodiment of the present invention. [Figure 5]FIG. 1 is a perspective view of a tape cover provided in a tape feeder according to an embodiment of the present invention; [Figure 6] FIG. 1 is an enlarged perspective view of a portion of a tape cover provided in a tape feeder according to an embodiment of the present invention. [Figure 7] FIG. 1 is a plan view showing a part of a tape cover provided in a tape feeder according to an embodiment of the present invention, together with a carrier tape; [Figure 8] FIG. 1 is a perspective view showing an air ejection portion provided in a tape feeder according to an embodiment of the present invention together with a part of a tape cover. [Figure 9] FIG. 1 is a side cross-sectional view of a portion of a tape feeder according to an embodiment of the present invention; [Figure 10] FIG. 1 is a side view of a portion of a tape feeder according to an embodiment of the present invention. [Figure 11] (a) and (b) are side views of a portion of a tape feeder according to an embodiment of the present invention. [Figure 12] 1A is a side view of a portion of a tape feeder according to an embodiment of the present invention; FIG. 1B is a plan view of the portion of the tape feeder according to the embodiment of the present invention; [Figure 13] FIG. 1 is a side view of a portion of a tape feeder according to an embodiment of the present invention. [Figure 14] 1A is a plan view showing a first modified example of a magnet member provided in a tape feeder according to an embodiment of the present invention; FIG. 1B is a plan view showing a second modified example of the magnet member; [Figure 15] 1A is a plan view showing a third modified example of a magnet member provided in a tape feeder according to an embodiment of the present invention; FIG. 1B is a plan view showing a fourth modified example of the magnet member; DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a component mounting device equipped with a tape feeder in one embodiment of the present invention. FIG. 1 shows a component mounting device 1 equipped with a tape feeder, which is one embodiment of the component supply device of the present invention. The component mounting device 1 is a device that mounts components BH on a board KB, and is equipped with a board transport unit 12 on a base 11. A mounting head 13 is provided above the base 11. The mounting head 13 is moved horizontally by a head movement mechanism (not shown). The mounting head 13 is equipped with a plurality of nozzles 14 extending downward.

[0011] The substrate transport unit 12 transports the substrate KB horizontally and positions it at a predetermined working position. Hereinafter, the transport direction of the substrate KB by the substrate transport unit 12 is referred to as the X direction, and the horizontal direction perpendicular to the X direction is referred to as the Y direction. The up-down direction is referred to as the Z direction. Furthermore, within the Y direction, the direction toward the center of the base 11 is referred to as the "front," and the direction facing the opposite direction is referred to as the "rear."

[0012] In Figure 1, a carriage 15 is connected to the rear end of base 11. Carriage 15 has a feeder base 15a and a reel holder 15b. A plurality of tape feeders 16 are attached to feeder base 15a and aligned in the X direction. Each tape feeder 16 is detachably attached to feeder base 15a.

[0013] 1, reel holder 15b holds a plurality of reels RL aligned in the X direction, each corresponding to a respective one of a plurality of tape feeders 16 attached to feeder base 15a. Carrier tape CT is wound around each reel RL.

[0014] 2(a) and 2(b) are perspective views of the leading end of a carrier tape fed by a tape feeder according to an embodiment of the present invention. In FIGS. 2(a) and 2(b), a number of pockets PK for storing components are arranged in a row on the carrier tape CT. A number of feed holes KH are arranged in a row on the carrier tape CT parallel to the row of pockets PK. Each pocket PK stores one component BH, and the component BH in the pocket PK is covered and sealed within the pocket PK by a cover tape TT attached to the top surface of the carrier tape CT.

[0015] 2(a), the tip of the cover tape TT is processed so as to extend a certain length beyond the tip of the carrier tape CT. Hereinafter, the part of the cover tape TT extending from the tip of the carrier tape CT will be referred to as the "extension ES" of the cover tape TT.

[0016] Figure 3 is a side view of a tape feeder according to an embodiment of the present invention. In Figure 3, tape feeder 16 is configured with a main body 21 as a base that is detachably attached to feeder base 15a. Inside main body 21, a transport path 22 that is a passage for transporting carrier tape CT is formed. The upper surface of transport path 22 is a transport surface 22M that supports the lower surface of carrier tape CT.

[0017] 3, a tape insertion opening 23 is formed at the rear end of the main body 21, through which the carrier tape CT pulled out from the reel RL is inserted from its leading end. A tape ejection opening 24 is formed at the front end of the main body 21, through which the carrier tape CT is ejected after traveling through the transport path 22. A component removal position 16T, where the mounting head 13 removes a component BH, is set between the positioning sprocket 32 and the ejection sprocket 33 on the top surface of the main body 21.

[0018] 3, a transport mechanism 30 is provided within the main body 21 to transport the carrier tape CT inserted through the tape insertion port 23 along the transport path 22. As shown in Fig. 3, the transport mechanism 30 includes three sprockets (an introduction sprocket 31, a positioning sprocket 32, and a discharge sprocket 33) aligned from rear to front, and a sprocket drive motor 34. The sprocket drive motor 34 is operated under the control of a feeder control unit 35 (Fig. 3) provided within the main body 21, and rotates the three sprockets synchronously in the same direction (clockwise in Fig. 3) via a gear mechanism (not shown).

[0019] Figure 4 is a side view of a portion of a tape feeder according to one embodiment of the present invention. In Figure 4, a plurality of feed pins PN are provided on the outer periphery of each of three sprockets (introduction sprocket 31, positioning sprocket 32, and discharge sprocket 33). When these three sprockets are driven to rotate by sprocket drive motor 34, the feed pins PN of each sprocket engage with feed holes KH provided in the carrier tape CT from below, advancing the carrier tape CT forward (downstream) on the conveying path 22. At this time, the carrier tape CT is delivered in the order of introduction sprocket 31, positioning sprocket 32, and discharge sprocket 33.

[0020] 3 and 4, a tape cover 40 is provided on the upper part of the main body 21. The tape cover 40 covers from above a part of the region between the entrance sprocket 31 and the discharge sprocket 33 of the carrier tape CT transported along the transport path 22. In this manner, in the present embodiment, the tape cover 40 is provided to cover from above the carrier tape CT transported along the transport path 22.

[0021] Fig. 5 is a perspective view of a tape cover provided in a tape feeder according to an embodiment of the present invention. In Fig. 5, tape cover 40 is made up of a single plate-like member, and its lower surface has a shape that generally follows the upper surface of conveyance path 22. The rear portion of tape cover 40 (the portion where carrier tape CT on conveyance path 22 enters) forms an inclined portion 41 that is inclined relative to conveyance path 22 so that the height from conveyance path 22 (conveyance surface 22M) increases toward the rear (upstream side) (see also Fig. 6, which is an enlarged view of area AR1 in Fig. 5). Fig. 6 is an enlarged perspective view of a portion of the tape cover provided in a tape feeder according to an embodiment of the present invention.

[0022] 5 and 6, a slit 42 extending in the width direction (X direction) of the tape cover 40 and two air escape sections 43 located at both ends of the width direction of the slit 42 are formed slightly downstream of the base of the inclined section 41 of the tape cover 40 (i.e., upstream of the component removal position 16T). The slit 42 is an open space provided between a guide edge 44, which is the downstream edge, and an opposing edge 45, which is the upstream edge opposite the guide edge 44. The guide edge 44 is formed by the edge of a protruding piece 44T located downstream of the slit 42 and protruding upstream. The guide edge 44 and the opposing edge 45 each extend in the X direction as a whole. The guide edge 44 has the function of guiding the extension ES of the cover tape TT extending from the leading end of the carrier tape CT upward (i.e., in a direction upward and away from the conveyance surface 22M).

[0023] In this embodiment, the tape cover 40 is arranged to cover from above the carrier tape CT transported along the transport path 22, and has a guide edge 44 that guides the extension portion ES, which is the extension portion of the cover tape TT extending from the tip of the carrier tape CT, in a direction upward and away from the transport surface 22M at a position upstream of the component removal position 16T, and an opposing edge 45 that is located upstream of the guide edge 44 and faces the guide edge 44.

[0024] Fig. 7 is a plan view showing a portion of a tape cover provided in a tape feeder according to an embodiment of the present invention, together with the carrier tape. In this embodiment, as shown in Fig. 7, the width dimension L2 of the guide edge 44, which corresponds to the width dimension of the slit portion 42, is smaller than the width dimension U1 of the cover tape TT, but the position of the guide edge 44 in the X direction is set to a position that, in a plan view, encompasses the pocket PK of the carrier tape CT transported along the transport path 22. Therefore, the component BH in the pocket PK always passes below the guide edge 44 (below the slit portion 42).

[0025] 7, the distance L1 between the slit portion 42 and the opposing edge 45 in the Y direction is set to a dimension smaller than the thickness of the carrier tape CT and larger than the thickness of the cover tape TT. Furthermore, the width direction dimension L3 of the opposing edge 45 is set to a dimension larger than the width dimension U1 of the cover tape TT and smaller than the width dimension U2 of the carrier tape CT.

[0026] 6 and 7, the two air escape sections 43 provided in the tape cover 40 each consist of an opening connected to both ends of the slit section 42 in the width direction (X direction), and the maximum dimension in the Y direction is greater than the spacing L1 between the slit sections 42. In this embodiment, one of the two air escape sections 43 (first air escape section 43A) is provided inside the tape cover 40 in the width direction, and the other (second air escape section 43B) is provided facing the side edge of the tape cover 40.

[0027] 5, a component removal opening 40K is provided near the downstream end of tape cover 40. Component removal opening 40K is an opening for removing components BH by nozzle 14 from carrier tape CT transported on transport path 22 by transport mechanism 30, and is located above component removal position 16T described above.

[0028] 5, a sprocket avoidance hole 46 is provided upstream of the component removal opening 40K. The sprocket avoidance hole 46 is an elongated hole extending in the longitudinal direction (Y direction) of the tape cover 40. The sprocket avoidance hole 46 has the function of preventing interference between the feed pin PN of the positioning sprocket 32 and the tape cover 40.

[0029] As will be described later, the cover tape TT is peeled off from the carrier tape CT before it reaches the component take-out opening 40K. Therefore, the pocket PK positioned at the component take-out position 16T due to the transport operation of the carrier tape CT by the transport mechanism 30 becomes exposed upward directly below the component take-out opening 40K, and the mounting head 13 (nozzle 14) can take out the component BH through the component take-out opening 40K at the component take-out position 16T.

[0030] 3 and 4, an air ejection part 61 that ejects air upward is provided inside the main body part 21. The air ejection part 61 is located below the slit part .

[0031] FIG. 8 is a perspective view showing an air ejection unit provided in a tape feeder according to an embodiment of the present invention, together with a portion of the tape cover. FIG. 9(a) is a side cross-sectional view of a portion of the tape feeder according to an embodiment of the present invention. FIG. 9(b) is a plan view of a portion of the tape feeder according to an embodiment of the present invention. In FIGS. 8 and 9(a), air ejection unit 61 is attached to a main body side base 62 that is a part of the frame that constitutes main body 21. Air ejection unit 61 has two air ejection ports 61H that are arranged side by side in the width direction (i.e., X direction) of tape cover 40. These two ejection ports 61H extend through block-shaped air ejection unit 61 in the thickness direction (Z direction).

[0032] 9(a), a communication space 63 is formed in the main body base 62, opening to the upper surface side, and an air pipe 64 is connected to the communication space 63. The communication space 63 is connected to both of the two air outlets 61H. Therefore, when positive pressure is supplied to the air pipe 64, air (positive pressure air) is ejected from each of the two air outlets 61H of the air ejection part 61 through the communication space 63.

[0033] 3, air pipe 64 extends inside main body 21. Air pipe 64 is connected via an air ejection control valve 65 provided inside main body 21 to an air plug 66 provided to protrude forward (to the right side of the paper in FIG. 3) from the lower rear part 21K of main body 21.

[0034] When the tape feeder 16 is attached to the feeder base 15a, the air plug 66 fits into an air socket (not shown) provided on the feeder base 15a. The air socket is connected to a positive pressure source (not shown). Therefore, with the tape feeder 16 attached to the feeder base 15a, positive pressure can be supplied to the air pipe 64 via the air socket and air plug, and air can be ejected from each of the two ejection ports 61H by controlling the air ejection control valve 65 from the feeder control unit 35.

[0035] 8, the two outlets 61H of the air ejection unit 61 are positioned opposite the two air escape sections 43 (first air escape section 43A and second air escape section 43B) formed in the tape cover 40 in the direction (substantially the up-down direction) along the flow of air 67. Therefore, the air 67 ejected from each of the two outlets 61H flows above the tape cover 40 through each of the two air escape sections 43, as shown in FIG.

[0036] When the air 67 is blown up, the extension portion ES, which is approaching the slit portion 42, is blown up by the air 67 and passes through the slit portion 42 and enters above the tape cover 40. As described above, the distance L1 of the slit portion 42 shown in FIG. 7 is set to a dimension that is smaller than the thickness of the carrier tape CT and larger than the thickness of the cover tape TT. Therefore, the carrier tape CT transported along the transport path 22 cannot pass through the slit portion 42, but the cover tape TT peeled off from the carrier tape CT can pass through the slit portion 42.

[0037] In this embodiment, the air ejection section 61 ejects air 67 from below the tape cover 40, blowing up the extension section ES of the carrier tape CT being transported along the transport path 22 and moving it above the tape cover 40 through the slit section 42 between the guide edge 44 and the opposing edge 45.

[0038] Figure 10 is a side view of a portion of a tape feeder according to an embodiment of the present invention. In Figures 3, 4, and 10 (Figure 10 is an enlarged view of area AR2 in Figure 4), tape retraction section 74 consisting of three rollers (first roller 71, second roller 72, and third roller 73) is provided within main body 21.

[0039] The three rollers are located above a slit portion 42 provided in the tape cover 40. All three rollers are made of gears. The second roller 72 and the third roller 73 each have a smaller diameter than the first roller 71 and are engaged with the first roller 71. The second roller 72 is located downstream of the first roller 71, and the third roller 73 is located above the first roller 71 (upstream of the second roller 72).

[0040] The driving force of the sprocket drive motor 34 is transmitted to the first roller 71 via a power transmission mechanism (not shown). When the first roller 71 is driven by the sprocket drive motor 34 and rotates, the second roller 72 and the third roller 73 that mesh with the first roller 71 also rotate. At this time, the second roller 72 and the third roller 73 rotate in the opposite direction to the first roller 71. Specifically, the first roller 71 rotates counterclockwise in FIG. 10 (indicated by arrow R1 in the figure), and the second roller 72 and the second roller 73 each rotate clockwise in FIG. 10 (indicated by arrow R2 in the figure). These three rollers operate at a timing that is linked to the operation of the three sprockets (inlet sprocket 31, positioning sprocket 32, and discharge sprocket 33).

[0041] 10, a guide portion 81 is provided on the downstream side of the first roller 71. A guide surface 81M, which is the upstream surface of the guide portion 81 (the surface on the first roller 71 side), is formed in an arc shape along the outer circumferential surface of the first roller 71.

[0042] 4 and 10, a partition member 82 is provided above the transport path 22. The partition member 82 extends in the Y direction inside the main body 21, and divides the space above the transport path 22 in the main body 21 into upper and lower sections. The upper region partitioned by the partition member 82 serves as a cover tape discharge space 83 into which the cover tape TT is fed after being peeled off from the carrier tape CT.

[0043] 8 and 9(a) and (b), a magnet member 90 is provided below the slit portion 42 of the tape cover 40, spanning from the upstream side to the downstream side of the slit portion 42. The magnet member 90 has the function of attracting downward (toward the bottom side of the pocket PK) the components BH in the carrier tape CT (in the pocket PK) that are transported by the transport mechanism 30 and pass below the slit portion 42 after the extension portion ES, blown up by the air 67 ejected from each of the two ejection ports 61H, moves from the slit portion 42 to above the tape cover 40.

[0044] In this embodiment, the magnet member 90 is attached to the upper surface of the air jetting part 61, and its shape can be freely changed depending on the number, arrangement, shape, etc. of the nozzles 61H for the air 67 provided in the air jetting part 61. In this embodiment, as shown in Figures 8 and 9(b), the air jetting part 61 has two nozzles 61H for the air 67 provided side by side in the X direction, and the magnet member 90 is provided in the region between these two nozzles 61H, positioned across the slit part 42 from the upstream side to the downstream side. Therefore, the magnet member 90 functions to attract downward the part BH that moves across the slit part 42 from the upstream side to the downstream side, without adversely affecting the upward blowing of the extension part ES by the air jetting part 61.

[0045] In this embodiment, the magnetic member 90 is affixed to the upper surface of the air blowing part 61, but a recess with a depth corresponding to the thickness of the magnetic member 90 may be formed in the surface of the air blowing part 61, and the magnetic member 90 may be fitted into the recess. When such a configuration is adopted, the surface of the magnetic member 90 and the surface of the air blowing part 61 are at the same level, and the progress of the carrier tape CT passing over them is not hindered by a step at the boundary between the magnetic member 90 and the air blowing part 61 (the same applies to the modified examples described below).

[0046] When the tape feeder 16 having the above configuration is to supply components BH, the operator first inserts the leading end of the carrier tape CT, on which the extension portion ES of the cover tape TT has been formed, into the tape insertion opening 23. Then, the carrier tape CT is pushed downstream until the leading end of the carrier tape CT abuts against the feed pin PN of the lead-in sprocket 31.

[0047] The operator pushes the carrier tape CT in until the leading end of the carrier tape CT abuts the feed pin PN of the introduction sprocket 31, and then operates an operation start switch (not shown). When the feeder control unit 35 detects that the operation start switch has been operated, it activates the sprocket drive motor 34, causing three sprockets (the introduction sprocket 31, the positioning sprocket 32, and the discharge sprocket 33) to rotate. As a result, the carrier tape CT in the conveying path 22 is conveyed downstream by the three sprockets.

[0048] 11(a) and 11(b) are side views of a portion of a tape feeder according to an embodiment of the present invention. As the carrier tape CT is transported downstream, when the extension ES of the cover tape TT enters the area below the inclined portion 41 of the tape cover 40, the feeder control unit 35 activates the air ejection control valve 65 to eject air 67 from the air ejection unit 61 (specifically, two ejection ports 61H) (FIG. 11(a)). As a result, the extension ES of the cover tape TT approaching the slit portion 42 is blown upward by the air 67 ejected from the ejection ports 61H, passes through the slit portion 42, and moves toward the upper surface of the tape cover 40 (FIG. 11(b)). When the extension ES of the cover tape TT passes through the slit portion 42 above the tape cover 40, the feeder control unit 35 stops the ejection of air 67 from the air ejection unit 61.

[0049] As the carrier tape CT is further transported after the extension portion ES passes through the slit portion 42 above the tape cover 40, the leading end of the carrier tape CT abuts against the underside of the inclined portion 41 of the tape cover 40 (FIG. 11(b)), and advances between the underside of the tape cover 40 and the transport path 22 (transport surface 22M) while pushing up the entire tape cover 40. As a result, the leading end of the extension portion ES of the cover tape TT that has passed through the slit portion 42 and moved above the tape cover 40 is pinched (caught) and pulled up by the first roller 71 and second roller 72 that rotate in opposite directions.

[0050] As described above, the first roller 71 and the second roller 72 operate in a timing that is synchronized with the three sprockets (the lead-in sprocket 31, the positioning sprocket 32, and the discharge sprocket 33). Therefore, the lifting of the cover tape TT by the first roller 71 and the second roller 72 is synchronized with the advancement of the carrier tape CT.

[0051] FIG. 12(a) is a side view of a portion of a tape feeder according to an embodiment of the present invention. FIG. 12(b) is a plan view of a portion of a tape feeder according to an embodiment of the present invention. When the carrier tape CT advances along the conveying path 22 with the extension portion ES of the cover tape TT passing upward through the slit portion 42, the guide edge 44 constituting the slit portion 42 enters the carrier tape CT and the cover tape TT. Therefore, as the carrier tape CT advances further, the cover tape TT is peeled off from the carrier tape CT almost in synchronization with the advancement of the carrier tape CT (FIGS. 12(a) and 12(b)). In this way, the cover tape TT is peeled off from the carrier tape CT using the slit portion 42 (specifically, the guide edge 44) of the tape cover 40 as the peeling position.

[0052] 13 is a side view of a portion of a tape feeder according to an embodiment of the present invention. In this embodiment, as described above, a magnet member 90 is provided in a position below the slit portion 42 of the tape cover 40 in the transport path 22. Therefore, even if the components BH in the carrier tape CT (in the pocket PK) transported along the transport path 22 become charged by static electricity or the like before reaching the slit portion 42, which is the peeling position, and stick to the back surface of the cover tape TT from inside the pocket PK, the components BH are attracted downward by the magnetic force JR of the magnet member 90 and returned to the pocket PK (FIG. 13).

[0053] Therefore, in this embodiment, the component BH attached to the cover tape TT will not slip through the slit portion 42 together with the cover tape TT peeled off from the carrier tape CT, and will not collide with the edge of the slit portion 42 (especially the guide edge 44) and be damaged.

[0054] The cover tape TT, which has been peeled off from the carrier tape CT and passed through the slit portion 42 toward the upper surface of the tape cover 40 as described above, is captured and pulled up by the first roller 71 and the second roller 72, and then guided by the guide surface 81M of the guide portion 81 to move rearward (upstream) along an arc-shaped trajectory along the outer peripheral surface of the first roller 71 (FIG. 12(a)). The cover tape TT is then sandwiched between the first roller 71 and the third roller 73, which rotate in opposite directions, and transported rearward (upstream), and sent out to the cover tape discharge space 83 described above.

[0055] As described above, when the cover tape TT is peeled off from the carrier tape CT at the slit portion 42, the components in the pocket PK downstream of the peeling position are no longer covered by the cover tape TT, but are instead covered from above by the tape cover 40. Therefore, the components BH in the pocket PK remain stored in the pocket PK even after passing the peeling position until they reach the component removal position 16T (component removal opening 40K).

[0056] When the component BH stored in the carrier tape CT reaches the component removal position 16T, it is exposed upward through the component removal opening 40K of the tape cover 40. Therefore, the mounting head 13 can insert the nozzle 14 through the component removal opening 40K to suck and remove the component BH located at the component removal position 16T (pick up the component BH from inside the pocket PK).

[0057] In this manner, the tape feeder 16 in this embodiment is configured to transport the carrier tape CT containing the component BH, and to position the component BH at the component removal position 16T in an exposed state that allows removal by peeling off the cover tape TT from the carrier tape CT before the component BH reaches the component removal position 16T.

[0058] When component mounting device 1 having tape feeders 16 of this configuration as a component supply device performs a component mounting operation of mounting components BH onto board KB, first, board KB supplied from outside component mounting device 1 is carried in by board transport unit 12 and positioned at a predetermined work position. Once board KB is positioned at the work position, each tape feeder 16 operates to supply component BH to component removal position 16T, and mounting head 13 picks up and removes component BH from tape feeder 16 using nozzle 14. Mounting head 13 then moves the picked-up component BH above board KB and mounts it at a predetermined target component mounting position on board KB.

[0059] Once the mounting head 13 has mounted all of the components BH to be mounted on the board KB in the manner described above, the board transport unit 12 carries the board KB out of the component mounting device 1. This completes the component mounting operation for one board KB.

[0060] As described above, the tape feeder 16 in this embodiment is provided with a magnet member 90 that is located in the region below the slit portion 42, spanning from the upstream side to the downstream side of the slit portion 42, and that attracts downward the components BH in the carrier tape CT that pass below the slit portion 42. Therefore, even if a component BH is attached to the back surface of the cover tape TT, the component BH is attracted downward by the magnetic force JR of the magnet member 90 and separated from the cover tape TT. This prevents problems that may occur when the cover tape TT is peeled off from the carrier tape CT while the component BH in the carrier tape CT remains attached to the cover tape TT, such as a pickup error in which the component BH slips through the slit portion 42 together with the cover tape TT, leaving the pocket PK empty and causing the mounting head 13 to fail to pick up the component BH, or a situation in which the mounting head 13 mounts a damaged component BH on the board KB despite the component BH colliding with the edge of the slit portion 42 (particularly the guide edge 44).

[0061] Incidentally, the magnet member 90 provided in the tape feeder 16 in this embodiment only needs to be able to attract downward the components BH in the carrier tape CT passing below the slit portion 42 after the extension portion ES of the cover tape TT, blown up by the air 67 ejected from the air ejection portion 61, moves from the slit portion 42 to above the tape cover 40. Therefore, in the case where the air ejection portion 61 is provided with two ejection ports 61H for the air 67, as in this embodiment, the magnet member 90 only needs to be located in the region between the two ejection ports 61H, spanning from the upstream side to the downstream side of the slit portion 42, and the shape of the magnet member 90 is not important.

[0062] Fig. 14(a) is a plan view showing a first modified example of a magnet member provided in a tape feeder according to an embodiment of the present invention. Fig. 14(b) is a plan view showing a second modified example of a magnet member provided in a tape feeder according to an embodiment of the present invention. For this reason, for example, like magnet member 90A of the first modified example shown in Fig. 14(a), the shape may be a trapezoid whose dimension in the width direction (X direction) increases from the upstream side to the downstream side. Note that this may also be a trapezoid whose dimension in the width direction (X direction) decreases from the upstream side to the downstream side.

[0063] Alternatively, the magnet member 90B may have a triangular shape whose width (X direction) dimension increases from the upstream side to the downstream side, as in the case of a second modified magnet member 90B shown in Fig. 14(b). Alternatively, the magnet member 90B may have a triangular shape whose width (X direction) dimension decreases from the upstream side to the downstream side.

[0064] Figure 15(a) is a plan view showing a third modified example of a magnet member provided in a tape feeder according to an embodiment of the present invention. Figure 15(b) is a plan view showing a fourth modified example of a magnet member provided in a tape feeder according to an embodiment of the present invention. Alternatively, like magnet member 90C of the third modified example shown in Figure 15(a), the shape may have an upstream wide portion 91a at its upstream end whose dimension in the width direction (X direction) increases toward the upstream side, and a downstream wide portion 91b at its downstream end whose dimension in the width direction increases toward the downstream side.

[0065] In this way, when the air ejection part 61 is provided with two air ejection ports 61H, the magnet member 90 (including 90A, 90B, 90C) may be positioned in the area between these two ejection ports 61H.

[0066] 15(b), when the air ejection unit 61 has one air ejection port 61H, the magnet member 90D of the fourth modified example can be configured to have an air passage 92 that is located in the area below the slit 42, spanning from the upstream side to the downstream side of the slit 42, and that allows the air 67 ejected from the air ejection unit 61 to pass from below to above, thereby achieving the effect of attracting the component BH downward without impeding the flow of the air 67. In this case, the shape of the magnet member 90D is not important. In this example, too, the air passage 92 is positioned opposite the direction of the flow of the air 67 ejected from the ejection port 61H.

[0067] In this way, when the air ejection part 61 has one air ejection port 61H, the magnet member 90D may have an air passage 92 that allows the air ejected from the ejection port 61H to pass from below to above.

[0068] It is preferable that the magnet member 90 (including modified examples 90A, 90B, 90C, and 90D) extend to the vicinity of the component removal position 16T. This allows the component BH to be stably held in the pocket PK of the carrier tape CT even after the cover tape TT is peeled off from the carrier tape CT. Furthermore, if the magnet member 90 is shaped to extend to a position directly below the component removal position 16T, the nozzle 14 can stably pick up the component BH in the pocket PK.

[0069] As described above, the tape feeder 16 as a component supply device in this embodiment is provided with magnet members 90 (90A, 90B, 90C, 90D) that are located in the area below the slit portion 42, spanning from the upstream side to the downstream side of the slit portion 42, and that attract downward the components BH in the carrier tape CT that passes below the slit portion 42. Even if the components BH in the pocket PK are attached to the back surface of the cover tape TT before the pocket PK in the carrier tape CT reaches the peeling position (slit portion 42), the magnetic force JR of the magnet members 90 can attract the components BH downward and separate them from the cover tape TT. Therefore, the tape feeder 16 in this embodiment can prevent problems caused by the components BH remaining attached to the cover tape TT when the cover tape TT is peeled from the carrier tape CT.

[0070] While the present invention has been described above in terms of embodiments, it is not limited to the above and various modifications are possible. For example, in the above-described embodiments, air escape portions 43 are formed at both ends of slit portion 42 in the width direction (X direction), but this is not necessarily required. Instead, slit portion 42 may be formed longer in the width direction to allow air 67 ejected from air ejection portion 61 to pass through. [Industrial Applicability]

[0071] To provide a component supply device capable of suppressing the occurrence of defects caused by components being stuck to a cover tape when the cover tape is peeled off from a carrier tape. [Explanation of symbols]

[0072] 1. Parts mounting device 13 Mounting head 16 Tape feeder (parts supply device) 16T Parts removal position 21 Main body 22 Transport path 30 Conveying mechanism 40 Tape cover 42 Slit section 43 Air escape section 43A First air escape 43B Second air escape 44 Induction Edge 45 Opposite Edge 61 Air outlet 61H spout 67 Air 90, 90A, 90B, 90C, 90D Magnet components 92 Air passage PN Feed Pin CT carrier tape PK Pocket TT Cover Tape ES extension BH parts

Claims

1. A component supply device that transports a carrier tape containing components, and peels a cover tape from the carrier tape before the components reach a component removal position, thereby positioning the components at the component removal position in an exposed state so that they can be removed, a transport mechanism that transports the carrier tape along a transport path; a tape cover provided to cover from above the carrier tape transported along the transport path, the tape cover having a guide edge that guides an extension portion of the cover tape extending from the leading end of the carrier tape in a direction away from the transport path at a position upstream of the component removal position, and an opposing edge that is positioned upstream of the guide edge and faces the guide edge; an air blowing section that blows air from below the tape cover, blowing up the extended portion of the carrier tape transported along the transport path and moving the extended portion of the carrier tape from the slit portion between the guiding edge and the opposing edge to above the tape cover; a magnet member positioned across the upstream and downstream sides of the slit portion in a region below the slit portion, and attracting downward components in the carrier tape passing below the slit portion; A parts supply device comprising:

2. 2. The component supply device according to claim 1, wherein when the air ejection unit has two air ejection ports, the magnet member is located in a region between the two air ejection ports.

3. 2. The component supply device according to claim 1, wherein when the air ejection unit has one air ejection port, the magnet member has an air passageway through which the air ejected from the ejection port passes from below to above.

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