Axial feeder and method for holding axial lead components

Abstract

Provided is an axial feeder that bends, into a truncated chevron shape, a pair of leads of an axial lead component which has been separated from a carrier tape, and that supplies at a supply position the axial lead component in which the pair of leads have been bent into a truncated chevron shape.　Further provided is a method in which a pair of retaining claws, which are at a fixed distance from each other and are provided to an operation head, retain an axial lead component in which a pair of leads have been bent into a truncated chevron shape, by execution of: a lead bending step in which the pair of leads of the axial lead component which has been separated from a carrier tape are bent into a truncated chevron shape; an operation head waiting step in which the operation head waits for the axial lead component after the lead bending step; and an axial lead component supply step in which the axial lead component in which the pair of leads have been bent into a truncated chevron shape in the lead bending step is raised to a predetermined height, and the axial lead component is supplied to the operation head which was set to wait in the operation head waiting step.

Description

[Technical Field]

[0001] The present invention relates to an axial feeder that bends a pair of leads of an axial lead component cut off from a carrier tape, and a method for holding an axial lead component with a bent pair of leads. [Background technology]

[0002] The following patent document describes a technique for bending a pair of leads of an axial lead component that has been cut off from a carrier tape. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-open No. 50-104482 [Patent Document 2] Japanese Patent Application Publication No. 54-19169 Summary of the Invention [Problem to be solved by the invention]

[0004] The present specification aims to appropriately bend a pair of leads of an axial lead component cut off from a carrier tape. [Means for solving the problem]

[0005] In order to solve the above problems, the present specification provides a method for manufacturing a lead wire of an axial lead component separated from a carrier tape. a pair of support members for supporting the pair of leads; A pair of rollers arranged above and Equipped with The pair of rollers has a distance longer than the distance between the outer wall surfaces of the pair of support members plus twice the outer diameter of the lead; The pair of leads and an axial feeder that bends the pair of leads into a V-shape by contacting the pair of leads and supplies the axial lead component with the pair of leads bent into a V-shape at a supply position; an axial feeder capable of changing the arrangement pitch of the pair of rollers or the type of the pair of rollers in order to change the degree of opening of the V-shaped lead of the pair of leads of the axial lead component; Disclose.

[0006] In order to solve the above problems, the present specification provides a method for manufacturing a lead wire of an axial lead component separated from a carrier tape. a pair of support members for supporting the pair of leads; A pair of rollers arranged above In an axial feeder comprising: a pair of rollers, the distance between the pair of rollers being longer than the distance between the outer wall surfaces of the pair of support members plus twice the outer diameter of the lead; and a lead bending step of bending the pair of leads into a V-shape by contacting the pair of leads. a lead bending process characterized in that the arrangement pitch of the pair of rollers or the type of the pair of rollers can be changed in order to change the degree of opening of the V-shaped pair of leads of the axial lead component. The method includes a work head waiting step in which a work head waits for the axial lead component after the lead bending step, and an axial lead component supply step in which the axial lead component whose pair of leads have been bent in a V-shape in the lead bending step is lifted to a predetermined height and supplied to the work head waiting in the work head waiting step, and a pair of holding claws at a fixed interval provided on the work head hold the axial lead component whose pair of leads have been bent in a V-shape. [Effects of the Invention]

[0007] According to the present disclosure, by bending a pair of leads of an axial lead component cut off from a carrier tape into a V-shape, the leads of the axial lead component to be mounted on a substrate can be appropriately bent. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a component mounting device; [Figure 2] FIG. 2 is a perspective view showing a component mounting device of the component mounting apparatus. [Figure 3] FIG. 2 is a plan view showing a taped component. [Figure 4] FIG. 2 is a perspective view of a tape feeder. [Figure 5] FIG. 2 is an enlarged perspective view of the tape feeder. [Figure 6] FIG. 2 is an enlarged side view of the tape feeder. [Figure 7] FIG. 2 is an enlarged perspective view of a cutting device and a bending device. [Figure 8] FIG. 2 is an enlarged perspective view of a cutting device and a bending device. [Figure 9]FIG. 2 is an enlarged perspective view of a cutting device and a bending device. [Figure 10] FIG. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. [Figure 14] FIG. [Figure 15] FIG. 10 is a diagram showing the component holder before it holds a pair of leads bent in a V-shape. [Figure 16] FIG. 10 is a diagram showing a component holder holding a pair of leads bent in a V-shape. [Figure 17] 10 is a perspective view showing a state in which a pair of leads of an axial lead component held by a component holder 66 are being inserted into a pair of through holes in a circuit board. FIG. [Figure 18] FIG. 10 is a diagram showing a state in which the tips of a pair of leads are inserted into a pair of through holes. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings as modes for carrying out the present invention.

[0010] 1 shows a component mounting apparatus 10. The component mounting apparatus 10 is an apparatus for performing the operation of mounting components on a circuit substrate 12. The component mounting apparatus 10 includes an apparatus main body 20, a substrate transport and holding device 22, a component mounting device 24, imaging devices 26 and 28, a bulk component supply device 30, and a component supply device 32. Examples of the circuit substrate 12 include a circuit board and a substrate with a three-dimensional structure, and examples of the circuit substrate include a printed wiring board and a printed circuit board.

[0011] The apparatus main body 20 is composed of a frame 40 and a beam 42 suspended from the frame 40. The substrate conveying and holding device 22 is disposed in the center of the frame 40 in the front-to-rear direction and includes a conveying device 50 and a clamping device 52. The conveying device 50 conveys the circuit substrate 12, and the clamping device 52 holds the circuit substrate 12. As a result, the substrate conveying and holding device 22 conveys the circuit substrate 12 and securely holds the circuit substrate 12 at a predetermined position. In the following description, the conveying direction of the circuit substrate 12 is referred to as the X direction, the horizontal direction perpendicular to that direction is referred to as the Y direction, and the vertical direction is referred to as the Z direction. In other words, the width direction of the component mounting apparatus 10 is the X direction, and the front-to-rear direction is the Y direction.

[0012] The component mounting device 24 is mounted on the beam 42 and includes two work heads 60, 62 and a work head moving device 64. As shown in FIG. 2, a component holder 66 is attached to the lower end surface of each work head 60, 62, and the component holder 66 holds a component. The work head moving device 64 also includes an X-direction moving device 68, a Y-direction moving device 70, and a Z-direction moving device 72. The X-direction moving device 68 and the Y-direction moving device 70 move the two work heads 60, 62 together to any position on the frame 40. The work heads 60, 62 are detachably mounted on sliders 74, 76, which can be easily positioned by an operator without using tools. The Z-direction moving device 72 moves the sliders 74, 76 individually in the vertical direction. The work heads 60, 62 are thus moved individually in the vertical direction by the Z-direction moving device 72.

[0013] The imaging device 26 is attached to the slider 74 facing downward on a vertical axis, and moves together with the work head 60 in the X, Y, and Z directions. This allows the imaging device 26 to capture an image of any position on the frame 40. As shown in FIG. 1, the imaging device 28 is disposed on the frame 40 between the substrate material conveying and holding device 22 and the component supply device 32 facing upward on a vertical line. This allows the imaging device 28 to capture an image of a component held by the component holder 66 of the work heads 60 and 62. The imaging devices 26 and 28 are two-dimensional cameras that capture two-dimensional images.

[0014] The bulk parts supply device 30 is disposed at one end of the frame 40 in the front-to-rear direction. The bulk parts supply device 32 is a device that aligns multiple parts that are scattered randomly and supplies the aligned parts. In other words, it is a device that aligns multiple parts in any orientation into a predetermined orientation and supplies the parts in the predetermined orientation.

[0015] The component supply device 32 is disposed at the other end of the frame 40 in the front-rear direction. The component supply device 30 has a tray-type component supply device 78 and a feeder-type component supply device 80. The tray-type component supply device 78 is a device that supplies components placed on a tray. The feeder-type component supply device 80 is a device that supplies components using a tape feeder 82. The tape feeder 82 will be described in detail below. Note that components supplied by the bulk component supply device 30 and the component supply device 32 include electronic circuit components, solar cell component components, power module component components, etc. Furthermore, electronic circuit components include components with leads and components without leads, etc.

[0016] Tape feeder 82 is positioned and attached so that it can be attached and detached with one touch by an operator without using tools, in a slot of feeder holder 86 fixedly provided at the other end of frame 40. Tape feeder 82 is a tape-formed lead component supply device that separates axial lead components from tape-formed components (see FIG. 3) 88 and supplies the separated axial lead components with their leads bent to work heads 60, 62 of component mounting apparatus 10.

[0017] As shown in FIG. 3, the taped component 88 is composed of multiple axial lead components 90 and two carrier tapes 92. The axial lead component 90 includes a generally cylindrical component body 96 and a pair of leads 98. The pair of leads 98 are generally linear and are fixed to opposite end surfaces of the component body 96, coaxially with the axis of the component body 96. The axial lead component 90 is sandwiched between the two carrier tapes 92, and the tips of the pair of leads 98, i.e., the ends opposite the component body 96, are taped to the two carrier tapes 92. The multiple axial lead components 90 are taped to the two carrier tapes 92 at equal intervals.

[0018] 4, tape feeder 82 is composed of a storage box 106 and a feeder body 107. In the following description, the direction from storage box 106 to feeder body 107 will be referred to as the "front," and the direction from feeder body 107 to storage box 106 will be referred to as the "rear." A connector 108 and two pins 109 are provided on the front end face of feeder body 107. When tape feeder 82 is attached to feeder holder 86, connector 108 is connected to a connector connection portion (not shown) formed on feeder holder 86 to supply power, and pins 109 are fitted into pin holes (not shown) formed on feeder holder 86 to accurately position tape feeder 82. Tape component 88 is stored in a folded state in storage box 106. Then, the tape component 88 stored in the storage box 106 is pulled out, and the tape component 88 extends on the upper end surface of the feeder body 107. The upper end surface of the feeder body 107 is a surface that extends horizontally.

[0019] As shown in FIGS. 5 and 6, a feeding device 110, a cutting device 111, and a bending device 112 are disposed inside the feeder body 107. The feeding device 110 includes a piston 114, a link mechanism 116, a feed arm 118, and a backflow prevention arm 120. The piston 114 is disposed at the upper end of the feeder body 107 so as to extend generally horizontally. The link mechanism 116 includes a support block 122 and two support arms 124 and is disposed in front of the piston 114. The support block 122 is fixed to the frame of the feeder body 107. The two support arms 124 are disposed side by side in the front-to-rear direction so as to extend vertically, and are swingably attached at their lower ends to the support block 122. The feed arm 118 is swingably attached to the upper ends of the two support arms 124 so as to extend generally horizontally. A piston rod 126 of the piston 114 is connected to the rear end of the feed arm 118. As a result, the feed arm 118 moves in the front-rear direction when the piston 114 is actuated.

[0020] Additionally, a plurality of feed dogs 128 are formed in the center of the upper edge of the feed arm 118. These feed dogs 128 engage with the leads 98 of the axial lead components 90 of the tape component 88 extending onto the upper end surface of the feeder body 107. The formation pitch of the plurality of feed dogs 128 is the same as the arrangement pitch of the axial lead components 90 on the tape component 88. As a result, when the feed arm 118 moves forward due to the operation of the piston 114, the tape component 88 is fed out toward the front side of the tape feeder 82.

[0021] Further, the anti-reverse arm 120 is disposed above the tape forming component 88, which extends from the upper end surface of the feeder body 107, and has teeth 132 formed at the tip of the anti-reverse arm 120. These teeth 132 engage with the leads 98 of the axial lead component 90 of the tape forming component 88 from the rear side, preventing the tape forming component 88 from moving rearward, i.e., preventing the tape forming component 88 from moving backward.

[0022] 7, a pair of stoppers 136 are erected on the front side of tape feeder 82, from which tape component 88 is fed by feed arm 118, so as to extend upward from between two carrier tapes 92 of tape component 88 extending on the upper surface of feeder body 107. The pair of stoppers 136 are erected at positions facing a pair of leads 98 of tape component 88 extending on the upper surface of feeder body 107. As a result, the pair of leads 98 of axial lead component 90 taped to tape component 88 fed by feed arm 118 abuts against the pair of stoppers 136, thereby positioning axial lead component 90.

[0023] The cutting device 111 is composed of a lifting block 140 and a pair of cutters 142. The lifting block 140 is supported by the feeder body 107 above the tape component 88 extending on the upper surface of the feeder body 107 so as to be movable up and down. The lifting block 140 is located above the axial lead component 90, which is positioned by a stopper 136 of the tape component 88 extending on the upper surface of the feeder body 107. The lifting block 140 is controllably raised and lowered by the operation of a piston (not shown).

[0024] Furthermore, a pair of cutters 142 of cutting device 111 are fixed to the underside of lift block 140 with their cutting edges facing downward. When lift block 140 is raised, one cutting edge of the pair of cutters 142 faces one of the pair of leads 98 of axial lead component 90 positioned by stopper 136. When lift block 140 is raised, the other cutting edge of the pair of cutters 142 faces the other of the pair of leads 98 of axial lead component 90 positioned by stopper 136.

[0025] As shown in FIGS. 5 and 6, the bending device 112 includes a piston 150, a cam mechanism 152, and a forming mechanism (see FIGS. 7 and 8) 154. The piston 150 is disposed in the center of the feeder body 107 so as to extend generally horizontally. The cam mechanism 152 includes a cam member 160, a roller 162, and a connecting block 164, and is disposed on the front side of the piston 150. The cam member 160 has an inclined surface 166 that slopes downward toward the front, and is movable in the front-rear direction. A piston rod 168 of the piston 150 is connected to the rear end of the cam member 160. The roller 162 is disposed in contact with the inclined surface 166 of the cam member 160 and functions as a cam follower. The roller 162 is rotatably held at the lower end of the connecting block 164, and the connecting block 164 is movable up and down in the vertical direction. As a result, when the cam member 160 moves in the front-to-rear direction due to the operation of the piston 150, the roller 162 moves along the inclined surface 166 of the cam member 160, and the connecting block 164 moves up and down in the vertical direction.

[0026] 7 to 10, the forming mechanism 154 includes a support block 170, a pair of support members 172, a pair of clamp arms 174, and a pair of bending rollers 176. Note that FIGS. 7 to 9 are perspective views of the forming mechanism 154, and FIG. 10 is a front view of the forming mechanism 154.

[0027] The support block 170 is disposed below the axial lead component 90 positioned by the stopper 136 and is connected to the connecting block 164 of the cam mechanism 152. This allows the support block 170 to move up and down vertically as the connecting block 164 moves up and down. The connecting block 164 is omitted from FIGS. 7 to 10 . The support member 172 is generally plate-shaped and has a V-shaped groove 178 formed in its upper edge. The pair of support members 172 are disposed facing each other and fixed to the support block 170. The pair of support members 172 are fixed to the support block 170 so that their respective grooves 178 are located below the pair of leads 98 of the axial lead component 90 positioned by the stopper 136. The distance between the leads 98 of the positioned axial lead component 90 and the upper edge of the support member 172 is very short. That is, the support member 172 is positioned below the leads 98 of the positioned axial lead component 90 with a small distance therebetween.

[0028] The pair of clamp arms 174 are generally L-shaped and are held at their lower ends by the support block 170 so as to be swingable in the front-to-rear direction. The pair of clamp arms 174 extend from the support block 170 forward of the pair of support members 172 toward above the tape forming component 88 extending on the upper surface of the feeder body 107. The portions of the pair of clamp arms 174 that extend above the tape forming component 88 are bent at approximately 90 degrees toward the rear, that is, toward above the pair of support members 172. As a result, the tips of the pair of clamp arms 174 are located above the pair of support members 172, sandwiching the pair of leads 98 of the tape forming component 88 extending on the upper surface of the feeder body 107. The pair of clamp arms 174 can swing backward by operation of a piston (not shown).

[0029] 9, the pair of clamp arms 174 are connected at their front ends by connecting rollers 180. A fixed table 182 is fixed to the upper surface of feeder body 107 above connecting rollers 180. Note that fixed table 182 is not shown in FIG. 7 to ensure visibility of clamp arms 174 and the like, and feeder body 107 is not shown in FIGS. 8 and 9 to ensure visibility of support block 170 and the like. Incidentally, fixed table 182 is disposed in front of lifting block 140, and as viewed from above, the pair of clamp arms 174 are located between lifting block 140 and fixed table 182, and only connecting rollers 180 connecting the pair of clamp arms 174 are located below fixed table 182.

[0030] The pair of bending rollers 176 are fixedly disposed on the side of the lifting block 140, which is located above the taped component 88 extending on the upper surface of the feeder body 107. The pair of bending rollers 176 are rotatable about axes extending in the front-to-rear and horizontal directions on the side of the lifting block 140, and are located above the pair of leads 98 of the axial lead component 90, which is positioned by the stopper 136.

[0031] In the component mounting apparatus 10, with the above-described configuration, components are mounted on the circuit board 12 held by the substrate conveying and holding device 22. Specifically, the circuit board 12 is conveyed to the work position and fixedly held at that position by the clamping device 52. Next, the imaging device 26 moves above the circuit board 12 and captures an image of the circuit board 12. This provides information regarding the positions of a pair of through-holes 190 (see FIG. 17) formed in the circuit board 12. Furthermore, the bulk component supply device 30 or the component supply device 32 supplies components at a predetermined supply position. The supply of components by the feeder-type component supply device 80 of the component supply device 32 will be described in detail below.

[0032] In the feeder-type component supply device 80, the operation of the piston 114 of the feeding device 110 in the tape feeder 82 causes the tape-formed component 88 extending from the upper end surface of the feeder body 107 to be fed forward. In other words, the upper end surface of the feeder body 107 is the feed height of the tape-formed component 88. Then, at the feed height, the leads 98 of the axial lead components 90 of the tape-formed component 88 fed forward contact the stopper 136 and are positioned. The position at which the axial lead components 90 are positioned by the stopper 136 is referred to as the clamp position.

[0033] Then, when the axial lead component 90 taped to the taped component 88 is positioned by the stopper 136, the pair of clamp arms 174 are swung backward, i.e., toward the positioned axial lead component 90, by the operation of the piston. As a result, the pair of leads 98 of the positioned axial lead component 90 are pressed downward by the pair of clamp arms 174. Next, the support block 170 is raised by the operation of the piston 150. At this time, the pair of support members 172 fixed to the support block 170 also rise, and the pair of leads 98 of the positioned axial lead component 90 are positioned by the grooves 178 of the pair of support members 172 and supported from below. As a result, the leads 98 of the positioned axial lead component 90 are clamped by the support members 172 and the clamp arms 174 while being positioned by the grooves 178. That is, the axial lead component 90 is clamped by the support member 172 and the clamp arm 174 at the clamp position.

[0034] Next, when the leads 98 of the positioned axial lead component 90 are clamped by the support member 172 and the clamp arm 174, the lift block 140 is lowered by the operation of the piston of the cutting device 111. At this time, the pair of cutters 142 are lowered together with the lift block 140, and the pair of leads 98 of the axial lead component 90 positioned by the stopper 136 are cut by the pair of cutters 142, as shown in FIG. 10 . This separates the axial lead component 90 from the carrier tape 92. In other words, the axial lead component 90 is separated from the tape-formed component 88 at the clamp position. Note that, because the leads 98 are clamped by the support member 172 and the clamp arm 174, the leads 98 are appropriately cut by the cutters 142.

[0035] When the leads 98 are cut and the axial lead component 90 is separated from the carrier tape 92 in this manner, the support block 170 further rises, and the axial lead component 90, with the leads 98 clamped by the support member 172 and the clamp arm 174, also rises. In other words, the axial lead component 90, which has been separated from the tape component 88, is lifted while being clamped by the support member 172 and the clamp arm 174. At this time, the axial lead component 90 is lifted in a position extending in the left-right direction, that is, with the axis of the component body 96 facing left-right. Note that the axis of the component body 96 is the same direction as the direction in which the leads 98 extend from the component body 96, so the position of the axial lead component 90 facing left-right can also be referred to as the position in which the axial lead component 90 extends left-right.

[0036] When the positioned axial lead component 90 is lifted up, the pair of leads 98 of the axial lead component 90 comes into contact with the pair of bending rollers 176. At this time, as the support block 170 rises, the pair of leads 98 that come into contact with the pair of bending rollers 176 are bent downward by the pair of bending rollers 176, as shown in Fig. 11. Note that, because the leads 98 are clamped by the support member 172 and the clamp arm 174, the leads 98 are bent appropriately by the bending rollers 176.

[0037] Furthermore, even after the pair of leads 98 have been bent by the pair of bending rollers 176, the axial lead component 90 rises toward the supply position together with the support block 170, with the unbent leads 98 on the component body side still clamped by the support member 172 and the clamp arm 174. At this time, the connecting roller 180 disposed at the front end of the clamp arm 174 abuts against the fixed table 182 and swings forward, that is, away from the clamped leads 98, as shown in FIG. 8. This releases the clamping of the leads 98 by the support member 172 and the clamp arm 174. That is, as shown in FIG. 12, the axial lead component 90 is now supported from below by only the pair of support members 172 at the bent pair of leads 98. As a result, the axial lead component 90 is supplied at the supply position while being positioned by the grooves 178 of the support member 172. In other words, the upper end position to which the axial lead component 90 is lifted becomes the supply position of the axial lead component 90, and the axial lead component 90 with bent leads 98 is supplied in a predetermined posture at a position higher than the upper end surface of the feeder body 107 from which the tape component 88 is fed.

[0038] When an axial lead component 90 is supplied from the supply position of the tape feeder 82, one of the work heads 60, 62 moves above the axial lead component 90. The work head 60, which has moved upward and stopped, then descends, and the component holder 66 included in the work head 60 holds the axial lead component 90, which is positioned and stopped at the supply position. Next, the work heads 60, 62 holding the axial lead component 90 at the supply position rise and then move above the imaging device 28, which captures an image of the axial lead component 90 held by the component holder 66. This provides information regarding the component's holding position error. The work heads 60, 62 holding the axial lead component 90 then move above the circuit board 12, and adjust the holding posture of the component based on the position of the through-hole 190 formed in the circuit board 12, information regarding the component's holding position error, and the like. At this time, the movement of the work heads 60, 62 and the adjustment of the holding posture are performed so that the positions of the pair of through holes 190 formed in the circuit board 12 and the positions of the tips of the pair of leads 98 of the axial lead component 90 held by the component holder 66 are aligned in the vertical direction. The work heads 60, 62 then descend, and after the pair of leads 98 have been inserted into the pair of through holes 190, the axial lead component 90 held by the component holder 66 is released. As a result, the pair of leads 98 are inserted into the pair of through holes 190, and the axial lead component 90 is attached to the circuit board 12.

[0039] In this way, in the component mounting apparatus 10, the pair of leads 98 of the axial lead component 90 separated from the carrier tape 92 in the tape feeder 82 are bent, and the bent pair of leads 98 are inserted into a pair of through holes 190 in the circuit board. However, while conventional tape feeders bend the pair of leads 98 into a U-shape, it is difficult to accurately bend various pairs of leads into a U-shape. In addition, to bend the pair of leads 98 into a U-shape, the pair of leads 98 must be bent in the same direction, in a direction perpendicular to the axis of the component body 96. Therefore, in conventional tape feeders, the spacing between the pair of bending rollers 176 for bending the pair of leads 98 is set to be approximately the same as the spacing between the pair of support members 172 that support the pair of leads 98 from below.

[0040] More specifically, when the pair of leads 98 are bent by the pair of bending rollers 176, the pair of leads 98 rise while being supported in the grooves 178 of the pair of support members 172. Then, when the pair of leads 98 rise, they come into contact with the pair of bending rollers 176, and are bent with the grooves 178 of the pair of support members 172 as fulcrums. Therefore, as shown in FIG. 11 , when the support member 172 rises to a position facing the bending rollers 176, the distance between the wall surface of the support member 172 facing the bending rollers 176 (hereinafter referred to as the "outer wall surface") and the end of the bending roller 176 facing the support member 172 (hereinafter referred to as the "roller end") is set to approximately the outer diameter of the lead 98. 11, when the leads 98 supported by the support member 172 are bent by the bending rollers 176, the leads 98 are sandwiched between the roller ends of the bending rollers 176 and the outer wall surface of the support member 172 and are bent along the outer wall surface of the support member 172. This causes the leads 98 to bend in a direction perpendicular to the axis of the component body 96. In other words, by setting the distance (L1) between the roller ends of the pair of bending rollers 176 to a dimension (L2 + 2 R) obtained by adding twice the outer diameter (R) of the leads 98 to the distance (L2) between the outer wall surfaces of the pair of support members 172, the pair of leads 98 can be bent into a U-shape.

[0041] However, because the lead diameters and materials of the leads differ for each type of axial lead component 90, it is difficult to accurately bend the pair of leads 98 of the various axial lead components 90 into a U-shape even if a pair of bending rollers is arranged at the interval described above. Therefore, the tape feeder 82 bends the pair of leads 98 of the axial lead component 90 into a V-shape.

[0042] 13, the pair of bending rollers 176 are fixedly disposed so that the distance (L1) between the inner sides of the roller ends thereof is longer than the dimension (L2 + 2·R) obtained by adding the distance (L2) between the outer wall surfaces of the pair of support members 172 and twice the outer diameter (R) of the lead 98. In other words, when the support members 172 are raised to a position facing the bending rollers 176, the distance between the outer wall surfaces of the support members 172 and the inner roller ends of the bending rollers 176 is longer than the outer diameter of the leads 98. By disposing the bending rollers 176 in this manner, when the leads 98 are bent by the bending rollers 176, the leads 98 bend with the grooves 178 of the support members 172 as fulcrums, but the leads 98 bend along the roller ends of the bending rollers 176 rather than along the outer wall surfaces of the support members 172. Therefore, the leads 98 are bent downward relative to the axis of the component body 96, but are bent so as to move away from the outer wall surface of the support member 172 as they approach the tips of the leads. As a result, the pair of leads are bent not in a U-shape but in a V-shape. In other words, the pair of leads are bent by the pair of bending rollers 176 so that the spacing between the pair of leads bent in a V-shape gradually increases as they approach the tips of the leads. Specifically, the spacing between the pair of leads bent in a V-shape is a dimension (L2 + 2 R) obtained by adding twice the outer diameter (R) of the leads 98 to the spacing (L2) between the outer wall surfaces of the pair of support members 172 at the base of the leads 98 on the component body 96 side and supported by the grooves 178 of the support member 172 (hereinafter referred to as the "bent base end"). On the other hand, the distance between the pair of leads bent in a V-shape at the tips of the leads is the distance (L1) between the roller ends of the pair of bending rollers 176. Note that the distance between the pair of leads bent in a V-shape at the tips of the pair of leads may be slightly larger than the distance (L1) between the roller ends of the pair of bending rollers 176 due to the restoring force of the leads.

[0043] In this way, by arranging the pair of bending rollers 176 at a wider interval than in the past, it is possible to bend the pair of leads 98 into a V-shape in various axial lead components having different lead diameters and lead materials. Then, in order to properly insert the pair of leads 98 bent into a V-shape into the pair of through-holes 190 in the circuit board 12, the component mounting apparatus 10 employs a component holder 66 shown in FIG.

[0044] The component holder 66 has a holder body 200, a pair of holding claws 202, and a pusher 204. The pair of holding claws 202 are generally rod-shaped and are arranged to extend downward from the underside of the holder body 200. The pair of holding claws 202 are parallel and spaced apart, and are held on the underside of the holder body 200 so that they can move toward or away from each other in this parallel state. Each of the pair of holding claws 202 is fastened to the underside of the holder body 200 with a bolt (not shown), thereby positioning the pair of holding claws 202. This allows the spacing between the pair of holding claws 202 to be fixed at any desired dimension. The spacing between the pair of holding claws 202 can be adjusted to any desired dimension by loosening the bolt. That is, by loosening the bolts, the operator can change the distance between the pair of holding claws 202 to any desired dimension, and by tightening the bolts, the pair of holding claws is maintained at a fixed distance that cannot be changed. Note that, on the opposing surfaces of the pair of holding claws 202, V-shaped grooves 208 corresponding to the wire diameter of the leads of axial lead component 90 are formed so as to extend in the axial direction of holding claws 202. Also, pusher 204 is disposed on the underside of holder body 200 so as to be movable up and down between the pair of holding claws 202. Pusher 204 is controllably raised and lowered by the operation of an air cylinder (not shown).

[0045] A pair of leads 98 bent in a V-shape is held by the component holder 66 having such a structure. More specifically, first, an operator changes the spacing between the pair of holding jaws 202 of the component holder 66 to a dimension that can hold the pair of leads 98 bent in a V-shape (hereinafter referred to as the "holdable dimension"). Here, the holdable dimension is a dimension that is longer than the narrowest distance between the pair of leads bent in a V-shape and shorter than the widest distance between the pair of leads bent in a V-shape. In other words, the holdable dimension is a dimension that is longer than the distance between the base ends of the pair of leads bent in a V-shape and shorter than the distance between the tip ends of the pair of leads bent in a V-shape. Specifically, for example, the holdable dimension is longer than the dimension (L2 + 2·R) obtained by adding twice the outer diameter (R) of the lead 98 to the distance (L2) between the outer wall surfaces of the pair of support members 172, and shorter than the distance (L1) between the roller ends of the pair of bending rollers 176. Then, when the worker changes the distance between the pair of holding jaws 202 of the component holder 66 to the holdable dimension, the component holder 66 is attached to the work heads 60, 62, and the mounting operation is performed in the component mounting apparatus 10.

[0046] When a mounting operation is performed in the component mounting apparatus 10, the tape feeder 82 separates the axial lead component 90 from the carrier tape 92 using the method described above and raises the axial lead component 90, thereby bending the pair of leads 98 into a V-shape. The tape feeder 82 then raises the axial lead component 90, thereby supplying the axial lead component 90 with the pair of leads 98 bent into a V-shape at the supply position. The work heads 60, 62, to which the component holder 66 is attached, wait for the axial lead component 90 to be supplied to the supply position. The work heads 60, 62 may wait for the axial lead component 90 while performing operations such as mounting the component on the circuit board 12, or may wait for the axial lead component 90 while moving above the supply position of the tape feeder 82, or may wait for the axial lead component 90 while stopped above the supply position of the tape feeder 82.

[0047] The tape feeder 82 then raises the axial lead component 90 to the working heads 60, 62, which are waiting for the axial lead component 90 to be supplied to the supply position, and supplies it to the supply position. At this time, the working heads 60, 62 move so that the V-grooves 208 of the pair of holding jaws 202 are positioned above the grooves 178 of the pair of support members 172 that support the pair of leads bent into a V-shape, as shown in FIG. 15 . The working heads 60, 62 then lower, causing the component holder 66 to lower toward the axial lead component 90 supplied to the supply position. At this time, the bent base ends of the pair of leads, which are bent starting from the grooves 178 of the pair of support members 172, fit into the V-grooves 208 of the pair of holding jaws 202. Furthermore, since the distance between the pair of retaining claws 202 is longer than the distance (L2+2·R) at the bent base ends of the pair of leads bent in a V-shape, when the bent base ends of the pair of leads enter the V-grooves 208 of the pair of retaining claws 202, the bent base ends of the leads do not come into contact with the V-grooves 208 of the retaining claws 202.

[0048] 16, the working heads 60, 62 are further lowered, so that the pair of leads bent in a V-shape enter further into the V-grooves 208 of the pair of holding claws 202. At this time, the working heads 60, 62 are lowered until the tips of the pair of leads bent in a V-shape enter into the V-grooves 208 of the pair of holding claws 202. In other words, the working heads 60, 62 are lowered until the lower ends of the pair of holding claws 202 are positioned below the tips of the pair of leads bent in a V-shape. When the tips of the pair of leads enter into the V-grooves 208 of the pair of holding claws 202 in this way, the distance between the pair of holding claws 202 is shorter than the distance (L1) between the roller ends of the pair of bending rollers 176, so the tips of the leads come into contact with the V-grooves 208 of the holding claws 202.

[0049] At this time, the pair of leads are urged toward each other by the pair of retaining claws 202 and elastically deformed into a U-shape. Therefore, the pair of leads bent into a U-shape exerts an elastic force in a direction spreading the pair of leads while being clamped in a U-shape by the pair of retaining claws 202. In other words, when the axial component is removed from this clamped state or the clamping by the pair of retaining claws is released, the pair of leads of the clamped axial component are clamped in a U-shape in a manner that returns them to their original U-shape. In this way, the pair of leads bent into a U-shape are clamped by the pair of retaining claws 202, which have a fixed distance longer than the distance (L2 + 2·R) at the bent base ends of the pair of leads and shorter than the distance (L1) at the tip ends of the pair of leads, so that the elastic force of the pair of leads prevents the pair of leads from shifting position within the V-grooves 208 of the pair of retaining claws. This makes it possible to reliably prevent the axial component 90 held by the component holder 66 from falling off.

[0050] When the axial lead component 90 is held by the component holder 66 in this manner, the work heads 60, 62 move above the pair of through holes 190 formed in the circuit board 12. At this time, the work heads 60, 62 move so that the lower ends of the V-grooves 208 of the pair of holding claws 202 of the component holder 66 are aligned in the vertical direction with the pair of through holes 190 formed in the circuit board 12. The pair of through holes 190 are formed so that the spacing between the pair of through holes 190 is the same as the spacing between the pair of holding claws 202. When the work heads 60, 62 move so that the lower ends of the V-grooves 208 of the pair of holding claws 202 are aligned in the vertical direction with the pair of through holes 190, the work heads 60, 62 descend until just before the lower ends of the holding claws 202 come into contact with the top surface of the circuit board 12, as shown in FIG. 17 . Next, as the pusher 204 in the component holder 66 moves down, the pusher 204 comes into contact with the component body 96 of the axial lead component 90 held by the pair of holding claws 202, and pushes the axial lead component 90 downward. As a result, the tips of the pair of leads of the axial lead component 90 are inserted into the pair of through holes 190. Then, as the pusher 204 moves down further, the pair of leads are inserted into the pair of through holes 190 until the component body 96 of the axial lead component 90 comes into contact with the top surface of the circuit board 12, and the axial lead component 90 is attached to the circuit board 12.

[0051] In this way, the pair of leads bent into a V-shape are clamped by the pair of retention claws 202, which are maintained at a fixed distance, and elastically deform. At this time, the pair of leads elastically deform along the V-grooves 208 of the pair of retention claws 202, so that the distance between the tips of the pair of leads becomes the same as the distance between the pair of retention claws 202. Meanwhile, the distance between the pair of through holes 190 formed in the circuit board 12 is the same as the distance between the pair of retention claws 202, as described above. Therefore, when the pair of leads 98 are bent into a V-shape in the tape feeder 82, even if the distance between the tips of the pair of leads varies depending on the type of axial lead component due to differences in lead wire diameter, lead material, etc., the pair of leads bent into a V-shape are held by the pair of retention claws while being elastically deformed, and the pair of leads held by the pair of retention claws can be reliably inserted into the pair of through holes 190.

[0052] Furthermore, in component holder 66, a pair of leads bent in a V-shape are clamped by a pair of holding jaws 202, which are maintained at a fixed distance, due to the elastic force of the pair of leads. In this way, component holder 66 does not hold a component by moving the pair of holding jaws 202 closer to or farther apart, so there is no need to move the pair of holding jaws 202 closer to or farther apart automatically, that is, by using a drive source. In other words, component holder 66 does not need to be equipped with a mechanism for automatically moving the pair of holding jaws 202 closer to or farther apart. This allows for the weight and cost of component holder 66 to be reduced.

[0053] Furthermore, tape feeder 82, which bends a pair of leads into a V-shape, can reduce stress generated in support member 172, bending roller 176, and the like during lead bending. In other words, conventional tape feeders bend leads in a direction perpendicular to the axis of component body 96, i.e., at 90 degrees. In contrast, tape feeder 82 does not bend leads to 90 degrees relative to the axis of component body 96, and the bending process is completed before the leads are bent to 90 degrees. Therefore, tape feeder 82 reduces stress generated in support member 172, bending roller 176, and the like during lead bending compared to conventional tape feeders. This makes it possible to extend the maintenance cycle or replacement cycle of support member 172, bending roller 176, and the like, thereby reducing the burden on workers and reducing costs.

[0054] Furthermore, as described above, by clamping the pair of leads bent into a V-shape between the pair of retention claws 202, positional displacement within the V-grooves 208 of the pair of retention claws 202 is prevented, and the axial lead component 90 is prevented from falling off from the component holder 66. On the other hand, although it is possible to clamp the pair of leads bent into a U-shape between the pair of retention claws 202, there is a risk that the axial lead component 90 will fall off from the V-grooves 208 of the pair of retention claws 202. More specifically, the spacing between the pair of leads bent into a U-shape is the same at the tip and base ends of the leads. Therefore, in order to clamp the pair of leads bent into a U-shape between the pair of retention claws 202, it is necessary to make the spacing between the pair of retention claws 202 slightly shorter than the spacing between the pair of leads bent into a U-shape. However, if the spacing between the pair of retaining claws 202 is made too short compared to the spacing between the pair of leads bent into a U-shape, the pair of leads bent into a U-shape cannot be inserted between the pair of retaining claws 202. Therefore, it is necessary to make the spacing between the pair of retaining claws 202 infinitesimally shorter than the spacing between the pair of leads bent into a U-shape. By making the spacing between the pair of retaining claws 202 infinitesimally shorter than the spacing between the pair of leads bent into a U-shape, the pair of leads bent into a U-shape can be clamped by the pair of retaining claws 202. However, if the spacing between the pair of retaining claws 202 is infinitesimally shorter than the spacing between the pair of leads bent into a U-shape, the pair of leads cannot be firmly clamped, and there is a risk that the axial lead component 90 may fall off the component holder 66 during movement of the work head, for example. On the other hand, when a pair of leads bent in a V-shape are clamped by a pair of holding claws 202, the leads are elastically deformed, and the elastic force of the leads causes them to be clamped by the pair of holding claws 202, preventing axial lead component 90 from falling off from component holder 66. In this way, by bending the pair of leads in a V-shape, axial lead component 90 can be prevented from falling off from component holder 66 even when the work head is moved.

[0055] Furthermore, when a pair of leads bent into a U-shape are held by a pair of holding claws 202, the leads come into contact with the V-grooves 208 of the holding claws from the base end of the bent leads to the tip. At this time, the leads are scraped and damaged by the V-grooves 208 from the base end of the bent leads to the tip. On the other hand, when a pair of leads bent into a V-shape are held by a pair of holding claws 202, as described above, the base end of the bent leads do not come into contact with the V-grooves 208 of the holding claws, and only the portions of the leads near the tips come into contact with the V-grooves 208 of the holding claws. As a result, only the portions of the leads near the tips are scraped and damaged by the V-grooves 208. In this way, by bending the pair of leads into a V-shape, damage to the leads when axial lead component 90 is held by component holder 66 can be reduced.

[0056] The component mounting apparatus 10 is an example of a substrate-related work machine. The circuit board 12 is an example of a circuit board. The work heads 60 and 62 are an example of a work head. The tape feeder 82 is an example of an axial feeder. The axial lead component 90 is an example of an axial lead component. The carrier tape 92 is an example of a carrier tape. The lead 98 is an example of a lead. The holding claw 202 is an example of a holding claw.

[0057] Furthermore, the present invention is not limited to the above-described embodiment and can be embodied in various forms incorporating various modifications and improvements based on the knowledge of those skilled in the art. For example, in the above-described embodiment, the spacing between the pair of retaining jaws 202 of the component holder 66 is fixed and predetermined and adjustable. However, a component holder in which the spacing between the pair of retaining jaws cannot be adjusted may also be employed. Furthermore, a component holder in which the spacing between the pair of retaining jaws can be adjusted automatically, i.e., using a drive source, may also be employed. When a component holder in which the spacing between the pair of retaining jaws can be adjusted automatically is employed, the pair of bent leads of the axial lead component 90 can be smoothly inserted into the pair of through-holes 190 in the circuit board 12, as shown in FIG. 18 .

[0058] Specifically, for example, the pair of holding claws are separated by actuation of a drive source so that the distance between them is wider than the distance between the pair of leads bent in a V-shape. Then, the work heads 60, 62 are moved so that the pair of leads bent in a V-shape are positioned between the pair of gripping claws. Next, the pair of holding claws are moved closer by actuation of a drive source, thereby clamping the pair of leads bent in a V-shape between the pair of holding claws. At this time, the pair of holding claws approach each other until they come into contact with the pair of leads bent in a V-shape and elastically deform. The pair of holding claws also hold the pair of leads so that the tips of the leads are exposed from the lower ends of the pair of holding claws. Next, the tips of the pair of leads exposed from the lower ends of the pair of holding claws are inserted into the pair of through-holes 190. Then, when the tips of the pair of leads are inserted into the pair of through holes 190, the pair of holding claws are moved apart by the actuation of the drive source. At this time, the pair of holding claws move apart until they separate from the pair of leads bent into a V-shape. This releases the pair of leads from the pair of holding claws, and as shown in FIG. 18 , the elastic force of the pair of leads widens the gap between the tips of the pair of leads, causing the pair of leads to become caught on the inner walls of the pair of through holes 190. At this time, although the component body 96 is spaced apart from the top surface of the circuit board 12, the pair of leads remain caught on the inner walls of the pair of through holes 190 due to their elastic force, so the axial lead component 90 does not shake on the circuit board 12. Therefore, the axial lead component 90 does not drop due to gravity and does not fall or move even if the circuit board 12 moves. In this way, by inserting a pair of leads bent in a V-shape into the through hole 190 of the circuit board 12, the elastic force of the leads allows the axial lead component 90 to be attached to the circuit board 12 in a stable manner.

[0059] In the above embodiment, the pair of support members 172 supporting the pair of leads bent in a V-shape are raised, causing the axial lead component 90 to rise to the supply position, and the component holder 66 is lowered toward the axial lead component 90 stopped at the supply position, causing the pair of leads to enter between the pair of holding claws and be clamped by the pair of holding claws. Alternatively, the pair of holding claws may be stopped at the supply position when the axial lead component 90 has not yet risen to the supply position, and the pair of support members 172 supporting the pair of leads bent in a V-shape may be raised toward the pair of holding claws stopped at the supply position, causing the pair of leads to enter between the pair of holding claws and be clamped by the pair of holding claws. In addition, a pair of support members 172 supporting a pair of leads bent in a V-shape may rise toward the supply position, and a pair of holding claws may descend toward the supply position, causing the pair of leads to enter between the pair of holding claws and be clamped by the pair of holding claws.

[0060] Furthermore, in the above embodiment, the pair of bending rollers 176 contact the pair of leads of the lifted axial lead component 90, thereby bending the pair of leads into a V-shape. However, the pair of bending rollers 176 may be lowered toward the pair of leads of the stationary axial lead component 90 and contact the pair of leads, thereby bending the pair of leads into a V-shape. Furthermore, the mechanism for bending the leads into a V-shape is not limited to bending rollers 176, and mechanisms of various structures can be used. For example, a mechanism can be used in which the leads are gripped by gripping claws and bent by moving the gripping claws.

[0061] In the above embodiment, all of the steps of feeding out tape-formed components 88, separating axial lead components 90 from carrier tape 92, lifting the separated axial lead components 90, and bending a pair of leads of the lifted axial lead components 90 into a V-shape are performed in tape feeder 82, but these steps may be distributed among multiple devices. That is, for example, a device including a device for feeding out tape-formed components 88 and a device for separating axial lead components 90 from carrier tape 92 may be detachably attached to a component supplying device including a device for lifting axial lead components 90 and a bending device for bending a pair of leads of the lifted axial lead components 90 into a V-shape, or each of these may be independent devices detachably attached to component mounting apparatus 10.

[0062] Furthermore, in the above embodiment, the pair of leads 98 of the axial lead component 90 are bent by a pair of bending rollers 176, but the pair of leads 98 may be bent by various objects other than rollers, such as blocks, walls, or protrusions.

[0063] The present invention may also be applied to lead components that are attached to the circuit board 12 without bending the leads into a V-shape or a C-shape, such as radial lead components in which a pair of leads are pre-bent into a V-shape, or radial feeders that supply these.

[0064] Furthermore, even if the axial lead component is of the same type, the arrangement pitch of the pair of support members 172 may be changed or the type may be changed in order to change the position of the bent base end of the lead.

[0065] Furthermore, in order to make the pair of leads of an axial lead component or a radial lead component open in a different V-shape, the arrangement pitch of the pair of bending rollers 176 may be changed or the type may be changed. For this purpose, the forming mechanism 154 may be replaced with an appropriate type.

[0066] Furthermore, the present invention is applied to a tape feeder that separates an axial lead component 90 from a tape component 88 and bends a pair of leads of the separated axial lead component 90 into a V-shape, but it may also be applied to a device that bends an axial lead component 90 that has already been separated from a tape component 88, or a pair of leads of an axial lead component 90 that is not taped to a carrier tape 92, into a V-shape. [Explanation of symbols]

[0067] 10: component mounting device (substrate work machine) 12: circuit substrate (circuit board) 60: work head 82: tape feeder (axial feeder) 90: axial lead component (axial lead component) 92: carrier tape 98: lead 202: holding claw

Claims

1. An axial feeder comprising a pair of support members for supporting a pair of leads of an axial lead component cut off from a carrier tape, and a pair of rollers disposed above the pair of leads, wherein the distance between the pair of rollers is longer than the distance between the outer wall surfaces of the pair of support members plus twice the outer diameter of the leads, and the axial feeder bends the pair of leads into a V-shape by bringing the pair of leads into contact with the pair of rollers, and supplies the axial lead component with the pair of leads bent into a V-shape at a supply position, An axial feeder characterized in that the arrangement pitch of the pair of rollers or the type of the pair of rollers can be changed to vary the degree of opening of the V-shaped lead of the pair of leads of the axial lead component.

2. An axial feeder comprising a pair of support members that support a pair of leads of an axial lead component cut off from a carrier tape, and a pair of rollers arranged above the pair of leads, wherein the spacing between the pair of rollers is longer than the dimension obtained by adding twice the outer diameter of the leads to the spacing between the outer wall surfaces of the pair of support members, and the pair of leads is brought into contact with the pair of rollers to bend the pair of leads into a V-shape, and the bent V-shape axial lead component is supplied to a supply position, wherein the axial feeder is characterized in that the arrangement pitch of the pair of rollers or the type of the pair of rollers can be changed to vary the degree of V-shape opening of the pair of leads of the axial lead component; a work head that holds the axial lead component supplied at the supply position and mounts it on a circuit board; Equipped with The substrate-related operating machine has the operating head stand by and then hold the axial lead component supplied to the supply position.

3. The working head a pair of holding claws for holding a pair of leads of the axial lead component; 3. The substrate-related operating apparatus according to claim 2, wherein the distance between said pair of holding claws is such that said pair of leads of said axial lead component can be held.

4. a lead bending process for bending the pair of leads into a V-shape by bringing the pair of leads into contact with the pair of rollers, the pair of rollers having a distance between them that is longer than the distance between the outer wall surfaces of the pair of support members plus twice the outer diameter of the leads, in an axial feeder having a pair of support members and a pair of rollers disposed above the pair of leads, the lead bending process being characterized in that the arrangement pitch of the pair of rollers or the type of the pair of rollers can be changed to vary the degree of opening of the V-shape of the pair of leads of the axial lead component; a work head waiting step in which a work head waits for the axial lead component after the lead bending step; an axial lead component supply step of lifting the axial lead component, the pair of leads of which have been bent in a V-shape in the lead bending step, to a predetermined height and supplying the axial lead component to the working head waiting in the working head waiting step; Run A method in which a pair of holding claws at a fixed interval provided on the working head hold an axial lead component in which the pair of leads are bent in a V-shape.

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