Kink processing unit and component mounting device

Abstract

Provided are a kink processing unit capable of executing kink processing by applying force in a direction in which lead wires face each other, and a component mounting device.　A kink processing unit according to the present disclosure comprises: a cam plate drive source; a cam plate that advances and retracts along a sliding direction on the basis of the drive of the cam plate drive source; a component placement part on which an electronic component having a pair of lead wires can be placed; an inner mold block that opens and closes in accordance with the position of the cam plate and moves outward from the inside of the pair of lead wires of the electronic component placed on the component placement part toward the lead wires as the cam plate advances; and an outer mold block that opens and closes in accordance with the position of the cam plate, moves inward from the outside of the pair of lead wires toward the lead wires as the cam plate advances, causes each of the pair of lead wires to be sandwiched between said outer mold block and the inner mold block, and processes the pair of lead wires into a kink shape.

Description

Kinking unit and component mounting apparatus

[0001] The present disclosure relates to a technology for kinking lead wires of electronic components.

[0002] The following Patent Document 1 describes a kink forming mechanism that performs kinking on a pair of lead wires of an electronic component. The kink forming mechanism of Patent Document 1 includes a fixed guide and a movable guide. The movable guide is provided at a position facing the fixed guide across a conveyance path for conveying radial components, and slides toward the fixed guide. The movable guide is provided with a tapered inclined portion.

[0003] Japanese Unexamined Patent Publication No. 2023-71470

[0004] In the kinking mechanism of the above-mentioned Patent Document 1, during kinking, the inclined portion of the movable guide applies a pressing force to the lead wire toward the deep side (fixed guide side) in the sliding direction (lateral direction in the document), and there is a risk that an unnecessary force is applied to the lead wire in a direction different from the direction in which it is desired to bend the lead wire through processing. For this reason, there is room for improvement in the kinking method.

[0005] The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a kinking unit and a component mounting apparatus capable of performing kinking by applying a force in the direction in which lead wires face each other.

[0006] To solve the above problems, this specification discloses a kinking unit comprising: a drive source for a cam plate; a cam plate that moves back and forth along a sliding direction based on the drive of the cam plate drive source; a component mounting section on which an electronic component having a pair of lead wires can be mounted; an inner mold block that opens and closes according to the position of the cam plate and moves outward toward the lead wires from the inside toward the lead wires of the pair of lead wires of the electronic component mounted on the component mounting section as the cam plate moves forward; and an outer mold block that opens and closes according to the position of the cam plate and moves inward toward the lead wires from the outside toward the lead wires as the cam plate moves forward, sandwiching each of the pair of lead wires between itself and the inner mold block, and processing the pair of lead wires into a kink shape. It should be noted that the contents of this disclosure are not limited to implementation as a kinking unit, but are also extremely useful when implemented as a component mounting device comprising a kinking unit and a transport head.

[0007] According to the kinking unit and component mounting device described herein, kinking can be performed by applying force to the lead wires in opposing directions.

[0008] Perspective view of the component mounting device. Perspective view of the work head portion of the component mounting device. Schematic diagram showing the state in which axial lead components are supplied from a tape feeder and kinking is performed. Perspective view of the kinking unit. Perspective view of the processing section. Top view and partially enlarged view of the kinking unit. Perspective view showing the outer mold claw section, lead guide, lift section, and inner mold block. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state of the forced return member in kinking. Perspective view showing the state of the forced return member in kinking. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed. Perspective view showing the state in which kinking is performed.

[0009] (Regarding the component mounting device 10) Hereinafter, an embodiment of the component mounting device of the present disclosure will be described in detail with reference to the figures. Figure 1 is a perspective view of the component mounting device 10 of this embodiment. The component mounting device 10 is a device for performing the work of mounting components (such as electronic components) onto a circuit board 12. The component mounting device 10 comprises a device body 20, a substrate transport and holding device 22, a head drive mechanism 24, a mark camera 26, a parts camera 28, a loose parts supply device 30, and a parts supply device 32. Examples of the circuit board 12 include printed wiring boards and printed circuit boards.

[0010] The main body of the device 20 comprises a frame 40 and a beam 42 mounted on the frame 40. The substrate transport and holding device 22 is positioned in the center of the frame 40 in the front-rear direction and comprises a transport device 50 and a clamping device 52. The transport device 50 is a device for transporting the circuit substrate 12, and the clamping device 52 is a device for holding the circuit substrate 12. Thus, the substrate transport and holding device 22 transports the circuit substrate 12 and also holds the circuit substrate 12 fixedly at a predetermined working position. In the following description, the transport direction of the circuit substrate 12 is referred to as the X-axis direction, the horizontal direction perpendicular to that direction is referred to as the Y-axis direction, and the vertical direction is referred to as the Z-axis direction. In other words, the width direction of the component mounting device 10 is the X-axis direction, and the front-rear direction is the Y-axis direction.

[0011] The head drive mechanism 24 is mounted on the beam 42 and has two work heads 60 and 62 and a work head moving device 64. As shown in Figure 2, a chuck 66 is detachably provided on the lower end surface of each work head 60 and 62. The chuck 66 has a pair of gripping claws 67. The chuck 66 grips a part by closing the pair of gripping claws 67 and releases the part by opening the pair of gripping claws 67. The work heads 60 and 62 may also be equipped with suction nozzles for holding parts by suction.

[0012] Furthermore, a pusher 65, which will be described later, is attached to the lower end surface of the chuck 66 (see Figures 8 and 9). The chuck 66 is provided with a drive source for raising and lowering the pusher 65. This drive source can be an air cylinder, a motor, or the like. The pusher 65 is located between a pair of gripping claws 67. The pusher 65 descends based on the drive source, pushing the part gripped by the pair of gripping claws 67 downwards.

[0013] Furthermore, as shown in Figures 1 and 2, the work head moving device 64 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 and 62 together to any position on the frame 40. Each work head 60 and 62 is detachably mounted on sliders 74 and 76, and the Z-direction moving device 72 moves the sliders 74 and 76 individually in the vertical direction. In other words, the work heads 60 and 62 move individually in the vertical direction by the Z-direction moving device 72.

[0014] Furthermore, the mark camera 26 is mounted on the slider 74 with its orientation facing downwards and moves in the X-axis and Y-axis directions together with the work head 60. This allows the mark camera 26 to capture images of any position on the frame 40. The part camera 28, as shown in Figure 1, is positioned with its orientation facing upwards between the substrate transport and holding device 22 and the part supply device 32 on the frame 40. This allows the part camera 28 to capture images of the parts held by the chucks 66 of the work heads 60 and 62.

[0015] The loose parts supply device 30 is located at one end of the frame 40 in the front-rear direction. The loose parts supply device 30 is a device that aligns multiple parts that are scattered loosely and supplies the parts in an aligned state. In other words, it is a device that aligns multiple parts in any orientation to a predetermined orientation and supplies the parts in that predetermined orientation.

[0016] The parts supply device 32 is located at the other end of the frame 40 in the front-rear direction. The parts supply device 32 includes a tray-type parts supply device 78, a feeder-type parts supply device 80, and a kinking unit 81. The tray-type parts supply device 78 is a device that supplies parts while they are placed on a tray (not shown).

[0017] Furthermore, the feeder-type component supply device 80 is a device that supplies components by tape feeder 82. The tape feeder 82 is detachably mounted on tape feeder holder 86 and supplies components from tape-formed components. Tape-formed components are components that have been formed into tape. The components supplied by the loose component supply device 30 and the component supply device 32 are, for example, electronic components such as IC chips, axial lead components, and radial lead components. Note that the components may also be other components that can be mounted on the circuit board 12, such as connectors and switches.

[0018] In this embodiment, the tape feeder 82 supplies, for example, axial lead components. Figure 3 shows the state in which axial lead components 90 are supplied from the tape feeder 82 and kinking is performed. As shown in Figure 3, the tape component 88 holds a plurality of axial lead components 90 at the same pitch using a pair of carrier tapes 92. The axial lead component 90 has, for example, a generally cylindrical component body 96 and a pair of lead wires 98. The pair of lead wires 98 are generally straight and are fixed to both end faces of the component body 96 coaxially with the axis of the component body 96. With the axial lead component 90 sandwiched between the pair of carrier tapes 92, the ends of the pair of lead wires 98, i.e., the ends opposite to the component body 96, are taped to the pair of carrier tapes 92. Note that the configuration of the axial lead component 90 and tape component 88 shown in Figure 3 is just one example.

[0019] The tape feeder 82 is equipped with a cutting device and a bending device (not shown) that separate the axial lead components 90 from a pair of carrier tapes 92 and supplies the separated axial lead components 90 with the pair of lead wires 98 bent at a 90-degree angle. The chuck 66 grips the axial lead components 90 supplied from the tape feeder 82 with a pair of gripping claws 67. For example, the chuck 66 positions the pair of gripping claws 67 on the outside of the bent pair of lead wires 98, slides the pair of gripping claws 67 toward each other, and holds the pair of lead wires 98 between the gripping claws 67 to hold the axial lead components 90.

[0020] The kinking unit 81 is detachably mounted on the tape feeder holder 86 and is a unit that performs kinking on the lead wires of electronic components. In this embodiment, as an example, the kinking unit 81 performs so-called internal kinking on axial lead components 90 supplied from the tape feeder 82, as shown in Figure 3. Details of the kinking unit 81 will be described later. The kinking unit 81 may also be a unit that performs so-called external kinking. Furthermore, the electronic component that is kinked by the kinking unit 81 is not limited to axial lead components 90, but may be other electronic components such as radial lead components.

[0021] (Operation of the component mounting device 10) The component mounting device 10 performs the operation of mounting components onto the circuit board 12 held by the base material transport and holding device 22, according to the configuration described above. Specifically, the circuit board 12 is transported to the work position and fixedly held there by the clamping device 52. Next, the mark camera 26 moves above the circuit board 12 and images the circuit board 12. This provides information regarding the error in the holding position of the circuit board 12. In addition, the loose component supply device 30 or component supply device 32 supplies components at a predetermined supply position. Then, either the work head 60 or 62 moves above the component supply position and grips the component with the chuck 66. Subsequently, the work head 60 or 62 that has picked up the component moves above the parts camera 28, and the parts camera 28 images the component gripped by the chuck 66. This provides information regarding the error in the holding position of the component. Next, the work heads 60 and 62 that have picked up the parts move above the circuit board 12 to correct errors in the holding position of the circuit board 12, errors in the holding position of the parts, etc. Then, the chuck 66 releases the gripped parts, and the parts are mounted on the circuit board 12. The parts mounting device 10 also performs kinking on the axial lead parts 90 as appropriate using the kinking unit 81. For example, the parts mounting device 10 transports the axial lead parts 90 received from the tape feeder 82 to the chuck 66 to the kinking unit 81. The parts mounting device 10 controls the kinking unit 81 to kink the pair of lead wires 98 of the axial lead parts 90. The parts mounting device 10 picks up the axial lead parts 90 after kinking is completed with the chuck 66, corrects errors in the holding position, etc., as with other parts, and mounts them on the circuit board 12.

[0022] (Configuration of the kinking unit 81) Next, the kinking unit 81 will be described. Figure 4 shows a perspective view of the kinking unit 81. The kinking unit 81 is detachably mounted on the tape feeder holder 86, similar to the tape feeder 82. For example, the tape feeder holder 86 is provided with multiple slots, and the kinking unit 81 and the tape feeder 82 can be mounted in each slot. In the following description of the kinking unit 81, the directions in which the kinking unit 81 is mounted on the tape feeder holder 86, i.e., the XYZ axis directions, will be used, as shown in Figures 4 and 6.

[0023] The kinking unit 81 comprises a housing 101, a processing section 102, and a control board 103. The housing 101 has a roughly box-like shape with a width that is approximately constant in the Z-axis direction, thin in the X-axis direction, and long in the Y-axis direction. Note that Figure 4 shows the housing 101 with the front side wall in the X-axis direction removed.

[0024] The processing unit 102 is located at the rear and upper part of the housing 101 in the Y-axis direction. This rear side is the supply position side for supplying parts to the tape feeder holder 86. As will be described later, the kink processing unit 81 performs kink processing by sliding the cam plate 108 in the Y-axis direction, moving it forward and backward. For this reason, in the following description, as shown in Figure 4, the right side in Figure 4 will be referred to as the front side in the sliding direction, and the left side as the rear side in the sliding direction. The control board 103 is located inside the housing 101 and is located at the rear side, opposite to the processing unit 102 in the Y-axis direction, i.e., the sliding direction. The control board 103 is connected to the air cylinders 105, 106, and 178, which are the drive sources for the processing unit 102, as will be described later. When the kink processing unit 81 is mounted on the tape feeder holder 86, the control board 103 is connected to the control unit (not shown) of the parts mounting device 10, and power is supplied from the parts mounting device 10 side. The control board 103 controls the processing unit 102 based on the control of the control unit of the component mounting device 10. The processing unit 102 performs kinking (internal kinking) on ​​the axial lead component 90 based on the control of the control board 103.

[0025] The processing unit 102 includes two air cylinders 105 and 106, a cam plate 108, an outer mold block 109, a pair of lead guides 111L and 111R, an inner mold block 112, a component mounting section 113, a lifter 115, and a light sensor 118. The housing 101 is provided with a bracket 119 for attaching the processing unit 102. The bracket 119 is a roughly plate-shaped metal member having a predetermined width in the X-axis direction and being long in the Y-axis direction. The bracket 119 is attached to the upper surface of the front end of the housing 101 in the sliding direction. The bracket 119 has a plurality of through holes that penetrate in the Z-axis direction.

[0026] Figure 5 shows a perspective view of the machining section 102. Figure 6 shows a top view and a partially enlarged view of the kink machining unit 81. As shown in Figures 4 to 6, the air cylinder 105 is a drive source that moves the cam plate 108 back and forth in the sliding direction and is mounted on the lower surface of the bracket 119. The air cylinder 105 moves the piston rod 105A (see Figure 11) back and forth in the sliding direction based on the control of the control board 103. A drive plate 121 is attached to the piston rod 105A of the air cylinder 105.

[0027] The drive plate 121 is, for example, an L-shaped metal plate. One end 121A of the drive plate 121 is fixed to the piston rod 105A of the air cylinder 105 below the bracket 119, and the cam plate 108 is fixed to the other end 121B of the drive plate 121. The drive plate 121 moves forward as the piston rod 105A of the air cylinder 105 extends. The drive plate 121 extends from below the bracket 119 through the through hole 119A of the bracket 119, upward and forward of the bracket 119.

[0028] A rail 119B is attached to the upper surface of the bracket 119, in front of the through hole 119A. A groove parallel to the sliding direction is formed in the rail 119B. The end portion 121B of the drive plate 121 is attached to the rail 119B and is slidable along the rail 119B in the sliding direction. The drive plate 121 moves along the rail 119B in accordance with the advance and retraction of the piston rod 105A of the air cylinder 105.

[0029] The cam plate 108 is a plate-shaped metal member with a tapered shape. The cam plate 108 has a base portion 108A, an intermediate portion 108B, and a tip portion 108C formed from the rear end to the front end in the sliding direction. The base portion 108A of the cam plate 108 is fixed to the upper surface of the end portion 121B of the drive plate 121 by two bolts 123. As a result, the cam plate 108 moves back and forth in the sliding direction together with the drive plate 121 based on the drive of the air cylinder 105. The width W1 of the base portion 108A along the X-axis direction is shorter than the width W0 of the end portion 121B.

[0030] The intermediate portion 108B is the part that protrudes forward from the front end of the base portion 108A. The width W2 of the intermediate portion 108B along the X-axis is shorter than the width W1 of the base portion 108A. The tip portion 108C is the part that protrudes forward from the front end of the intermediate portion 108B. The width W3 of the tip portion 108C along the X-axis is shorter than the width W2 of the intermediate portion 108B. Therefore, the cam plate 108 tapers from the rear base portion 108A towards the front end in the order of intermediate portion 108B and tip portion 108C. The front end of the tip portion 108C, i.e., the tip 108D of the cam plate 108, has a tapered shape in which the width in the X-axis direction decreases as it goes from rear to front. This makes it easier to insert the cam plate 108 between the pair of internal claw portions 157L and 157R, which will be described later.

[0031] Furthermore, a forced return plate 125 is attached to the cam plate 108. The forced return plate 125 is formed, for example, by bending a single metal plate, and has a fixing portion 126 and a pair of forced return members 127L and 127R. The fixing portion 126 has a roughly U-shape, bent at approximately 90 degrees when viewed from one side in the Y-axis direction. The bottom portion of the fixing portion 126 is fixed to the upper surface of the end portion 121B of the drive plate 121 by two bolts 122. As a result, the forced return plate 125 moves back and forth together with the cam plate 108. The fixing portion 126 is fixed to the end portion 121B on the side rearward of the base end portion 108A.

[0032] Each of the pair of forced return members 127L and 127R is formed on each of the two upper ends of the U-shaped fixed portion 126. The pair of forced return members 127L and 127R are parallel to the X-axis and Y-axis directions and are plate-shaped, extending in the Y-axis direction. Each of the pair of forced return members 127L and 127R is positioned to contact each of the pair of pins 136L and 136R of the outer block 109, which will be described later. The pair of forced return members 127L and 127R are arranged parallel to each other and spaced apart in the X-axis direction. The outer edges of the forced return members 127L and 127R in the X-axis direction are formed along the Y-axis direction. The inner edges of the forced return members 127L and 127R in the X-axis direction protrude toward each other at their front ends. Accordingly, each of the pair of forced return members 127L and 127R has a front contact portion 129L and 129R arranged with a predetermined distance between them, and a rear spacing portion 128L and 128R arranged with a wider distance between them than the contact portions 129L and 129R.

[0033] Furthermore, at the connection point between the contact portion 129L and the gap portion 128L in the sliding direction, an inclined portion 130L is formed on the inner edge of the forced return member 127L, which slopes inward from rear to front. The inner edge of the contact portion 129L and the inner edge of the gap portion 128L are connected by this inclined portion 130L. Similarly, the inner edge of the contact portion 129R and the inner edge of the gap portion 128R of the forced return member 127R are connected by the inclined portion 130R. The distance between the contact portions 129L and 129R in the X-axis direction is narrower than the distance between the gap portions 128L and 128R. Also, the distance between the contact portions 129L and 129R, and the distance between the gap portions 128L and 128R in the X-axis direction are both wider than the width W1 of the cam plate 108.

[0034] The outer block 109 includes a pair of outer rotating shafts 131L and 131R, a pair of outer bars 132L and 132R, a pair of outer claws 133L and 133R, an outer spring 135, and a pair of pins 136L and 136R. For the purposes of the following explanation, the side on which the forced return member 127L and outer rotating shaft 131L are provided will be referred to as the left side, and the side on which the forced return member 127R and outer rotating shaft 131R are provided will be referred to as the right side. In addition, for each component, the left-side component will generally be denoted by the letter L, and the right-side component will be denoted by the letter R. Furthermore, the cam plate 108, the forced return plate 125, the outer mold block 109, the inner mold block 112, and the component mounting section 113 have a structure that is symmetrical with respect to a line passing through the center of the component mounting section 113 in the X-axis direction and parallel to the sliding direction, that is, a left-right symmetrical structure. For this reason, in the following description, the left-side members, which are denoted by the letter L, will be described mainly, and the description of the right-side members will be omitted as appropriate.

[0035] The external rotating shaft 131L is mounted on the upper surface of the bracket 119 and has a substantially cylindrical shape parallel to the Z-axis direction. The external rotating shaft 131L is fixed to the bracket 119 by a bolt screwed in from below the bracket 119, for example. A shaft 138 is attached to the upper part of the external rotating shaft 131L. The external bar 132L is supported by the shaft 138 and is rotatably mounted relative to the external rotating shaft 131L. The external bar 132L is rotatable around a rotation axis parallel to the Z-axis direction. The external bar 132L is a metal member that is long in the Y-axis direction, and its approximate center in the Y-axis direction is supported by the shaft 138. For example, the front end 139 of the external bar 132L, which is in front of the position of the shaft 138, has a plate shape with a predetermined thickness in the X-axis direction. Also, the shape of the external bar 132L on the rear side of the position of the shaft 138 has a plate shape with a predetermined thickness in the Z-axis direction.

[0036] The outer claw portion 133L is attached to the front end portion 139 of the outer bar 132L. As shown in Figures 5 to 7, the outer claw portion 133L is a metal member and has a mounting portion 141 and a claw 143. The mounting portion 141 is plate-shaped with a predetermined thickness in the X-axis direction. The mounting portion 141 has a through hole 141A into which a bolt 144 is inserted. The mounting portion 141 is positioned on the outside of the front end portion 139 and is fixed to the front end portion 139 by inserting the bolt 144 from the outside in the X-axis direction and screwing the inserted bolt 144 into the front end portion 139.

[0037] The claw 143 is formed in front of the mounting portion 141. When the mounting portion 141 is attached to the front end portion 139, the outer claw portion 133L is attached to the outer bar 132L with the claw 143 facing inward, that is, with the claw 143 of the other outer claw portion 133R facing the claw 143 of the outer claw portion 133L. The claw 143 has a tapered shape, narrowing in the Z-axis direction as it moves from the outside in the X-axis direction to the inside. A mountain-shaped claw extending in the Y-axis direction is formed on the inner surface of the claw 143. The outer claw portion 133L performs internal kinking on the lead wire 98 by applying this claw 143 to the outside of the lead wire 98.

[0038] A shim plate 145 can be placed between the mounting portion 141 and the front end portion 139 in the X-axis direction. The shim plate 145 has a through hole into which a bolt 144 can be inserted. The distance between the outer claw portion 133L and the front end portion 139 in the X-axis direction is changed according to the thickness and number of shim plates 145. As the thickness and number of shim plates 145 increase, the claws 143 of the outer claw portion 133L move outward in the X-axis direction. This allows the position of the claws 143 to be changed according to the wire diameter of the lead wire 98 that is to be kinked. For example, if the wire diameter of the lead wire 98 is thick, the number of shim plates 145 is increased to move the claws 143 outward. Conversely, if the wire diameter of the lead wire 98 is thin, the number of shim plates 145 is decreased, or the shim plates 145 are removed to move the claws 143 inward. This allows for proper kinking.

[0039] Furthermore, an identification information section 146 is provided on the upper surface of the mounting section 141 of the outer claw section 133L. The inner block 112 and outer block 109, etc., can be attached to the processing section 102 in different combinations depending on the type of electronic component to be kinked. Specifically, for example, the set shown in Figure 7, i.e., the combination of the outer claw sections 133L, 133R, a pair of lead guides 111L, 111R, component mounting section 113, inner block 112, and the lift section 179 of the lifter 115, which will be described later, is used in combinations depending on the type of electronic component. The components included in these combinations are detachable from the kinking unit 81, and different components are used depending on the wire diameter and position of the lead wire 98. Note that Figures 4 and 5, and Figures 6 and 7 show different types of lead guides 111L, 111R.

[0040] When managing the sets shown in Figure 7 by type of electronic component, there is a risk that a user may mistakenly attach a set that does not correspond to the electronic component to be kinked to the processing unit 102. Therefore, the identification information unit 146 displays information that can identify the above combination. Specifically, the identification information unit 146 is, for example, a two-dimensional code such as a QR code (registered trademark). The identification information unit 146 is provided on the upper surface of the mounting unit 141 so that it can be imaged by the mark camera 26. As a result, as will be described later, the component mounting device 10 can determine whether the combination of the outer block 109, etc. corresponds to the electronic component to be kinked by imagering the identification information unit 146 with the mark camera 26. In addition, the number and thickness of the shim plates 145 can also be managed by the identification information unit 146 as one of the pieces of information in this combination. That is, the number of shim plates 145, etc. may be changed for each of the above sets. This allows the identification information unit 146 to verify whether the wire diameter of the lead wire 98 and the number of shim plates 145 match. The identification information unit 146 is not limited to QR codes (registered trademark), but may also be a one-dimensional code such as a barcode. Alternatively, the identification information unit 146 may be an IC tag such as an RFID tag. In this case, a device for reading the IC tag may be attached to the work heads 60, 62 or the sliders 74, 76.

[0041] The rear end 147 of the outer bar 132L in the longitudinal direction is positioned to contact the cam plate 108. The rear end 147 is located on the opposite side of the front end 139 in the longitudinal direction of the outer bar 132L, with the outer rotation shaft 131L in between. Therefore, when the pair of rear ends 147 are brought closer together, the pair of outer claw portions 133L and 133R move in the opening direction.

[0042] The outer block 109 has a cam plate 108 inserted between a pair of outer bars 132L and 132R. In the state shown in Figures 5 and 6, the pair of rear ends 147 are in contact with the intermediate portion 108B, with the intermediate portion 108B in between them in the X-axis direction. When the pair of outer bars 132L and 132R are in a rotational position where the pair of rear ends 147 are in contact with the intermediate portion 108B, the pair of outer claw portions 133L and 133R are in an open position. On the other hand, when the cam plate 108 moves forward, the base end 108A is inserted between the pair of rear ends 147. The base end 108A is thicker than the intermediate portion 108B. Therefore, as the cam plate 108 moves forward, the pair of outer bars 132L and 132R rotate in a direction that brings the pair of outer claw portions 133L and 133R closer together. Specifically, in the top view of Figure 6, the outer bar 132L rotates clockwise, and the outer bar 132R rotates counterclockwise. As a result, the pair of outer bars 132L and 132R rotate in a direction that brings the pair of outer claw portions 133L and 133R closer together, kinking the lead wires 98 of the axial lead component 90 placed on the component mounting portion 113, which will be described later. Kinking can be performed by advancing the cam plate 108. When the pair of outer bars 132L and 132R are in a rotational position where the pair of rear ends 147 contact the base end 108A, the pair of outer claw portions 133L and 133R are closed.

[0043] Each of the pair of outer bars 132L and 132R is provided with a spring support portion 148. The spring support portion 148 is located between the outer rotation shaft 131L and the rear end portion 147 in the longitudinal direction of the outer bar 132L. An outer spring 135 is attached to the pair of spring support portions 148 below the outer bars 132L and 132R. The outer spring 135 is, for example, a tension coil spring, with one end hooked onto the spring support portion 148 of the outer bar 132L and the other end hooked onto the spring support portion 148 of the outer bar 132R. The outer spring 135 biases the pair of rear end portions 147 toward each other. In other words, the outer spring 135 biases the pair of outer claw portions 133L and 133R toward opening. The external spring 135 is an example of an external elastic member of the present invention. Note that the external elastic member of the present invention is not limited to a spring; it may be other elastic materials such as rubber.

[0044] Accordingly, when the cam plate 108 moves forward, the outer block 109 rotates the pair of outer mold bars 132L and 132R, so that the pair of outer mold claw portions 133L and 133R move in a direction approaching each other, and the outer mold spring 135 stretches and deforms. Therefore, when the cam plate 108 retracts, the base end portion 108A is pulled out from between the pair of rear end portions 147, and the intermediate portion 108B is inserted, the pair of outer mold bars 132L and 132R rotate under the elastic force of the outer mold spring 135. That is, in the top view of FIG. 6, the outer mold bar 132L rotates counterclockwise, and the outer mold bar 132R rotates clockwise. The pair of outer mold claw portions 133L and 133R move in a direction away from each other and become an open state. Accordingly, after the cam plate 108 is advanced to perform kinking, retracting the cam plate 108 allows the pair of outer mold claw portions 133L and 133R to be opened by the elastic force of the outer mold spring 135.

[0045] Further, pins 136L and 136R are attached to each of the pair of outer mold bars 132L and 132R, respectively. The pin 136L is provided between the spring support portion 148 and the rear end portion 147 in the longitudinal direction of the outer mold bar 132L. The pin 136L protrudes upward from the upper surface of the outer mold bar 132L. In the position where the cam plate 108 advances, that is, the position where the base end portion 108A is disposed between the pair of rear end portions 147, the forcible return member 127L disposes the pin 136L inside the spacing portion 128L, and the forcible return member 127L is separated from the pin 136L. Note that the forcible return member 127L may have a configuration in which the spacing portion 128L is in contact with the pin 136L. Similarly, the forcible return member 127R disposes the pin 136R inside the spacing portion 128R and is in a state separated from the pin 136R. Therefore, the pair of pins 136L and 136R are sandwiched between the pair of spacing portions 128L and 128R in the X-axis direction (see FIG. 13).

[0046] Furthermore, as the cam plate 108 retracts, the forced return member 127L brings the inclined portion 130L and the contact portion 129L into sequential contact with the pin 136L. At the position where the intermediate portion 108B is positioned between the pair of rear end portions 147, the forced return member 127L brings the contact portion 129L into contact with the pin 136L. Similarly, the forced return member 127R brings the contact portion 129R into contact with the pin 136R. The pair of pins 136L and 136R are sandwiched between the pair of contact portions 129L and 129R in the X-axis direction. As a result, the pair of forced return members 127L and 127R rotate the pair of outer bars 132L and 132R in a direction that separates the pair of outer claw portions 133L and 133R from each other as the cam plate 108 retracts. In addition to the elastic force of the outer spring 135, the outer claw portions 133L and 133R can also be forcibly opened by the forced return members 127L and 127R. This allows the outer claw portions 133L and 133R to be opened more reliably after kinking.

[0047] Next, the configuration of the internal block 112 will be described. The air cylinder 106 is a drive source that moves the internal block 112 forward and backward in the sliding direction, and is attached to the lower surface of the tip of the bracket 119. The air cylinder 106 moves the piston rod 106A (see Figure 8) forward and backward in the sliding direction based on the control of the control board 103. A drive plate 151 is attached to the piston rod 106A of the air cylinder 106. The configuration of the air cylinder 106 and the drive plate 151 is the same as that of the air cylinder 105 and the drive plate 121, except that the orientation, size, and direction of movement of the drive plates 121 and 151 are opposite. For this reason, in the following description of the configuration for moving the internal block 112 forward and backward, the description of the configuration which is the same as the configuration for moving the cam plate 108 forward and backward will be omitted as appropriate.

[0048] The driving plate 151 is a metal plate bent into an L-shape, the lower end thereof is fixed to the piston rod 106A of the air cylinder 106, and a portion protruding upward from the through hole 119C of the bracket 119 extends rearward. The inner mold block 112 is fixed to the rearward extending portion of the driving plate 151. A rail 119D is mounted on the upper surface of the bracket 119 at a position rearward of the through hole 119C. The driving plate 151 is attached to the rail 119D so as to be slidable in the sliding direction. The driving plate 151 moves rearward when the piston rod 106A of the air cylinder 106 extends. Thereby, the inner mold block 112 also advances and retracts in the sliding direction together with the driving plate 151.

[0049] The inner mold block 112 includes a base portion 153, a pair of inner mold rotating shafts 155L and 155R, a pair of inner mold bars 156L and 156R, a pair of inner mold claw portions 157L and 157R, and an inner mold spring 158. The base portion 153 is a plate-shaped metal member, and is fixed to the upper surface of the upper end portion of the driving plate 151 by two bolts 161. A protruding portion 153A protruding rearward is formed at the rear end of the base portion 153. The protruding portion 153A is formed at the center in the X-axis direction at the rear end of the base portion 153.

[0050] The component placing portion 113 is disposed above the base portion 153, and can place an axial lead component 90 to be kink-processed. The component body 96 of the axial lead component 90 conveyed by the chuck 66 is placed on the component placing portion 113. The component placing portion 113 is fixed to the base portion 153 by a pair of bolts 163. The component placing portion 113 is disposed with a pair of spacers 165 interposed between itself and the base portion 153 in the Z-axis direction. Each of the pair of spacers 165 is disposed at the rear end of the base portion 153 excluding the protruding portion 153A, and is respectively disposed at both ends of the base portion 153 in the X-axis direction.

[0051] The component mounting portion 113 is a metal plate that forms a roughly T-shape, having a base portion 113A extending in the X-axis direction and a projection portion 113B projecting backward in a plan view in Figure 6. The component mounting portion 113 is positioned parallel to the upper surface of the base portion 153. Both ends of the base portion 113A in the X-axis direction are positioned on the upper surfaces of a pair of spacers 165. The component mounting portion 113 has through holes into which a pair of bolts 163 are inserted. The component mounting portion 113 is fixed to the base portion 153 by screwing the pair of bolts 163 into it from above while the base portion 113A is placed on the upper surfaces of the pair of spacers 165. The bolts 163 are screwed into the base portion 153, for example, through the spacers 165.

[0052] The protrusion 113B of the component mounting section 113 has the same shape as the protrusion 153A of the base section 153. The protrusion 113B is positioned opposite to the protrusion 153A in the Z-axis direction. The component body 96 of the axial lead component 90 is placed on this protrusion 113B.

[0053] The pair of internal rotating shafts 155L and 155R have a substantially cylindrical shape parallel to the Z-axis direction and are positioned between the pair of bolts 163 in the X-axis direction. The upper end of the internal rotating shaft 155L is attached to the base 113A of the component mounting section 113, and the lower end is attached to the base section 153. The internal bar 156L is rotatably mounted relative to the internal rotating shaft 155L. The internal bar 156L is a metal member with a substantially rectangular parallelepiped shape that is long in the Y-axis direction. Each of the pair of internal bars 156L and 156R rotates around a rotation axis parallel to the Z-axis direction. The thickness of the internal bars 156L and 156R in the Z-axis direction is thinner than the length of the spacer 165 in the Z-axis direction, i.e., the gap between the component mounting section 113 and the base section 153. The pair of spacers 165 allow the internal bars 156L and 156R to rotate smoothly.

[0054] The inner claw portion 157L is formed at the rear end of the inner bar 156L. Therefore, in this embodiment, the inner bar 156L and the inner claw portion 157L are formed from a single metal member. The inner claw portion 157L has a recess formed in it that matches the shape of the kink, that is, the shape of the claw 143 of the outer claw portion 133L. For example, the inner claw portion 157L has a groove formed parallel to the Y-axis direction. The inner claw portion 157L is provided with the opening of the recess facing outward in the X-axis direction, that is, facing outward relative to the inner bar 156L. Note that the inner bar 156L and the inner claw portion 157L may be separate members.

[0055] When kinking is not performed, each of the pair of internal mold bars 156L and 156R accommodates a portion of the internal mold claws 157L and 157R in a position between the protrusions 113B and 153A in the Z-axis direction, and the internal mold claws 157L and 157R are positioned close to each other in the X-axis direction. When kinking is performed and the cam plate 108 moves forward, the tip portion 108C of the cam plate 108 is inserted between the internal mold claws 157L and 157R in the X-axis direction.

[0056] The pair of internal mold bars 156L and 156R rotate when the cam plate 108 is inserted between the pair of internal mold claws 157L and 157R. In the plan view of Figure 6, the internal mold bar 156L rotates clockwise, and the internal mold bar 156R rotates counterclockwise. The pair of internal mold claws 157L and 157R move away from each other. The internal mold claw 157L sandwiches one lead wire 98 between itself and the external mold claw 133L, and the internal mold claw 157R sandwiches the other lead wire 98 between itself and the external mold claw 133R. This performs kinking. By inserting the cam plate 108 into the internal mold claws 157L and 157R, the internal mold claws 157L and 157R can be moved outward in the X-axis direction, and a force can be applied to the pair of lead wires 98 in the opposing direction, i.e., in the X-axis direction, to perform kinking. In other words, machining can be performed without applying unnecessary forces other than those in the X-axis direction, as is the case with conventional technology.

[0057] The internal spring 158 is provided on the internal bar 156L on the side opposite to the internal claw portion 157L, with the internal rotating shaft 155L in between. Therefore, the internal spring 158 is also provided on the internal bar 156R on the side opposite to the internal claw portion 157R, with the internal rotating shaft 155R in between. A spring support portion 167 is provided at the front end of each of the pair of internal bars 156L and 156R. The spring support portion 167 is screwed into the internal bar 156L in the X-axis direction and protrudes slightly inward from the inner surface of the internal bar 156L. The same applies to the internal bar 156R. The internal spring 158 is positioned between the pair of internal bars 156L and 156R and is mounted sandwiched between the internal bars 156L and 156R from both sides in the X-axis direction.

[0058] The internal spring 158 is, for example, a compression coil spring, with one end hooked onto a spring support portion 167 protruding inward from the internal bar 156L, and the other end hooked onto a spring support portion 167 protruding inward from the internal bar 156R. The internal spring 158 compresses and deforms when the front ends of the internal bars 156L and 156R move toward each other. The internal spring 158 biases the front ends of the pair of internal bars 156L and 156R toward each other. In other words, the internal spring 158 biases the pair of internal claw portions 157L and 157R toward each other. The internal spring 158 is an example of the internal elastic member of this application. Note that the internal elastic member of this application is not limited to a coil spring, but may be other elastic members such as a leaf spring or rubber.

[0059] Therefore, when the cam plate 108 moves forward and the tip 108D or tip 108C of the cam plate 108 is inserted between the pair of internal claw portions 157L and 157R, the pair of internal claw portions 157L and 157R move away from each other, and the internal spring 158 is compressed and deformed. As a result, the pair of internal bars 156L and 156R rotate due to the elastic force of the internal spring 158 as the cam plate 108 retracts and the cam plate 108 is removed from between the pair of internal claw portions 157L and 157R. That is, in the top view of Figure 6, the internal bar 156L rotates counterclockwise, and the internal bar 156R rotates clockwise. The pair of internal claw portions 157L and 157R move towards each other and become close together. As a result, after advancing the cam plate 108 and performing kinking, the cam plate 108 is retracted, allowing the pair of internal claw portions 157L and 157R to open due to the elastic force of the internal spring 158.

[0060] As shown in Figure 6, the cam plate 108, the outer mold block 109, and the inner mold block 112 have a symmetrical structure in the X-axis direction. For example, a straight line passing through the center of the cam plate 108 in the X-axis direction and parallel to the sliding direction also passes through the center of the outer mold block 109 and the center of the inner mold block 112. Each component has a symmetrical structure with respect to this line and is arranged in symmetrical positions. For example, the pair of outer mold claws 133L, 133R and the inner mold claws 157L, 157R have a structure that is symmetrical with respect to this line. This line also passes through the center of the component mounting section 113 in the X-axis direction. Furthermore, this line is parallel to the optical axis 169 of the optical sensor 118 (see Figure 5), which will be described later.

[0061] A pair of lead guides 111L and 111R are positioned between the inner block 112 and the outer block 109 in the sliding direction. The lead guide 111L has a base portion 171 and a holding portion 172, and when viewed from one side in the X-axis direction, it has a substantially L-shape. The base portion 171 is a thick plate in the Z-axis direction and is fixed to the upper surface of the bracket 119 by bolts 173. The holding portion 172 has a substantially rectangular parallelepiped shape that protrudes upward from the rear end of the base portion 171. A lead insertion groove 175 is formed on the inside of the holding portion 172 in the X-axis direction.

[0062] The lead insertion groove 175 is a groove parallel to the Z-axis direction and is formed as a recess on the inner surface of the holding portion 172 toward the outside in the X-axis direction. An opening is formed at the upper end of the lead insertion groove 175, allowing the lead wire 98 to be inserted through this opening. The lower end of the lead insertion groove 175, i.e., the bottom of the groove, is closed. Therefore, the lead wire 98 inserted into the lead insertion groove 175 is restricted from moving downward by the bottom of the lower end of the lead insertion groove 175 and is held in the state of being inserted into the lead insertion groove 175. Similarly, a lead insertion groove 175 is also formed in the holding portion 172 of the lead guide 111R. The pair of lead guides 111L and 111R are fixed in a position where their respective lead insertion grooves 175 face each other in the X-axis direction. The pair of lead wires 98 are inserted between the pair of lead guides 111L and 111R, in a state where they are in contact with each of the pair of lead insertion grooves 175 from the inside.

[0063] The spacing WD (see Figure 7), which is the distance between the two lead insertion grooves 175 in the X-axis direction, is a length corresponding to the pitch PT (see Figure 3) of the pair of lead wires 98 of the axial lead component 90 that are symmetrically kinked. For example, the spacing WD is slightly shorter than the pitch PT of the pair of lead wires 98 after the bending process shown in Figure 3. As a result, the pair of lead insertion grooves 175 can hold the axial lead component 90 by pressing the pair of lead wires 98 from the outside when they are inserted, in other words, by tensing the pair of lead wires 98 outwards.

[0064] The pair of lead guides 111L and 111R hold the respective ends of a pair of lead wires 98 by lead insertion grooves 175. Each of the lead insertion grooves 175 of the pair of lead guides 111L and 111R is positioned below the outer block 109 and the inner block 112. The lead insertion groove 175 of lead guide 111L holds the lead wire 98 at a position below the portion sandwiched between the outer claw portion 133L of the outer block 109 and the inner claw portion 157L of the inner block 112. Similarly, the lead insertion groove 175 of lead guide 111R holds the lead wire 98 at a position below the portion sandwiched between the outer claw portion 133R and the inner claw portion 157R. This allows the axial lead component 90 to be supported by the lead guides 111L and 111R before and after kinking without hindering the machining process.

[0065] Furthermore, the component mounting section 113 is a member that supports the component body 96 of the axial lead component 90, and is attached to the internal mold block 112. Based on the drive of the air cylinder 106, it moves forward and backward together with the internal mold block 112. The pair of lead guides 111L and 111R hold the respective ends of the pair of lead wires 98 before and after the component mounting section 113 moves backward from the position where the axial lead component 90 is mounted, thereby maintaining the posture of the axial lead component 90. Therefore, when the pair of lead wires 98 are inserted into the pair of lead insertion grooves 175, the axial lead component 90 maintains its posture, supported by the lead guides 111L and 111R, even when the component mounting section 113 moves back and forth in the sliding direction. This allows the posture of the axial lead component 90 to be maintained from loading to unloading using the chuck 66. In addition, the posture of the axial lead component 90 can be maintained during the operation of the lifter 115, which will be described later.

[0066] Furthermore, the lifter 115 is a device that moves up and down in a direction parallel to the Z-axis direction, and is a device that removes the axial lead part 90, which has been kinked, from the lead guides 111L and 111R. The lifter 115 has an air cylinder 178 and a lift section 179. The air cylinder 178 is fixed to the lower surface of the bracket 119, and is mounted so that the piston rod 115A (see Figure 18) is parallel to the Z-axis direction and facing upward. The lift section 179 has, for example, a thick disc shape in the Z-axis direction, with a male screw protruding from its lower surface. The lift section 179 is screwed onto and fixed to the tip of the piston rod 115A. Therefore, the lift section 179 moves up and down in accordance with the movement of the piston rod 115A in the Z-axis direction.

[0067] The lift portion 179 is positioned in the X-axis direction, at the center between the pair of lead guides 111L and 111R, and below the protrusion 153A of the base portion 153. Furthermore, in the state before kinking is performed, the lift portion 179 is positioned in front of the tip 108D of the cam plate 108 (see Figure 6).

[0068] When the axial lead component 90 is placed on the component mounting section 113, the lifter 115 is positioned with the lift section 179 in a lowered position. The lowered position is below the protruding portion 153A described above. The lift section 179 is positioned at a distance below the protruding portion 153A. After the component mounting section 113 retracts from the position on which the axial lead component 90 is placed, the lifter 115 drives the air cylinder 178 based on the control of the control board 103 to raise the lift section 179. The lifter 115 brings the lift section 179 into contact with the component body 96 of the axial lead component 90, which is supported by a pair of lead guides 111L and 111R, from below (see Figure 18). The lifter 115 moves the axial lead component 90 in a direction that removes the pair of lead wires 98 from the pair of lead guides 111L and 111R by raising the component body 96 with the lift section 179. This allows the axial lead component 90 to be removed from the lead guides 111L and 111R, or made easily removable. This helps to prevent pickup errors when the axial lead component 90 is picked up by the work head 60 after processing.

[0069] Furthermore, air cylinder 105 is an example of a drive source for the cam plate in this application. Air cylinder 106 is an example of a drive source for the internal block. Air cylinder 178 is an example of a drive source for the shifter. Each drive source is not limited to an air cylinder, but may also be other fluid pressure cylinders such as hydraulic cylinders. In addition, the drive source is not limited to a fluid pressure cylinder, but may also be other types of drive sources such as servo motors or linear motors.

[0070] Furthermore, each of the pair of lead guides 111L and 111R is provided with a position correction mark 181. The pair of position correction marks 181 are used to correct errors in the spacing WD and mounting position of the lead guides 111L and 111R. The position correction mark 181 is, for example, a hole with an opening on the upper surface of the holding portion 172. Note that the position correction mark 181 is not limited to a physical hole, but may also be a printed mark.

[0071] Each of the pair of lead guides 111L and 111R has a symmetrical shape and can be attached to and detached from the bracket 119 by removing the bolt 173. Each of the pair of lead guides 111L and 111R has a position correction mark 181 at the same position. That is, the position where the position correction mark 181 is formed on the holding portion 172 of lead guide 111L is the same position where the position correction mark 181 is formed on the holding portion 172 of lead guide 111R. As described above, it is preferable that the distance WD between the pair of lead insertion grooves 175 be a distance corresponding to the pitch PT of the pair of lead wires 98. Furthermore, by making the lead guides 111L and 111R detachable by the bolt 173, the lead guides 111L and 111R can be replaced according to the pitch PT of the lead wires 98 of the electronic component to be processed. However, there is a risk that an error may occur in the mounting position when replacing them.

[0072] Therefore, each of the pair of position correction marks 181 is formed as a hole with an opening on the upper surface of the holding part 172, and is positioned so that it can be imaged by the mark camera 26 which moves together with the work heads 60 and 62. As a result, as will be described later, the component mounting device 10 can detect the spacing WD of the lead guides 111L and 111R by image-taking the pair of position correction marks 181 with the mark camera 26. The component mounting device 10 can determine whether the detected spacing WD matches the pitch PT of the electronic component to be processed. In addition, the component mounting device 10 can detect the positions of the lead guides 111L and 111R and other members, specifically the XY coordinates, etc., from the image data of the position correction marks 181. Based on the detected positions, the component mounting device 10 can correct the position to which the chuck 66 is moved and the position to which the axial lead component 90 is transported. This enables accurate loading and unloading of the axial lead component 90.

[0073] Furthermore, as shown in Figure 5, the optical sensor 118 includes a light-emitting unit 183 and a light-receiving unit 184. The optical sensor 118 is used to detect whether or not an axial lead component 90 is present on the component mounting unit 113. The optical sensor 118 is, for example, an optical sensor that uses visible light or an infrared sensor. Note that the method for detecting the axial lead component 90 on the component mounting unit 113 is not limited to using an optical sensor; it may also be a method of image processing of camera image data, etc.

[0074] The light-emitting unit 183 and the light-receiving unit 184 are connected to the control board 103. The light-emitting unit 183 is mounted, for example, in front of the through hole 119C and emits light facing backward. The light-receiving unit 184 is mounted behind the through hole 119A and is fixed facing forward. The optical axis 169 of the optical sensor 118 is set toward the component body 96 of the axial lead component 90 placed on the component mounting section 113 (see the dashed line in Figure 5).

[0075] After the control board 103 has completed the control to pick up the axial lead component 90, which has undergone kinking, from the component mounting section 113 using the chuck 66, it receives a detection signal from the optical sensor 118. The control board 103 outputs the input detection signal to the control unit of the component mounting device 10, for example. The control unit of the component mounting device 10 determines whether or not the axial lead component 90 remains on the component mounting section 113 based on the input detection signal. For example, the optical sensor 118 outputs a high-level detection signal when the light from the light-emitting section 183 is being received by the light-receiving section 184, and outputs a low-level detection signal when the light from the light-emitting section 183 is not being received by the light-receiving section 184. When the axial lead component 90 is mounted on the component mounting section 113, the light from the light-emitting section 183 is blocked by the component body 96, and the optical sensor 118 outputs a low-level detection signal. Therefore, even after the kinking process is complete and the picking operation with the chuck 66 is finished, if a low-level detection signal is input, the component mounting device 10 determines that the axial lead component 90 remains on the component mounting section 113 due to a chuck error. The component mounting device 10 then performs error notification, etc. This allows the optical sensor 118 to detect a pickup error of the processed axial lead component 90 and notify the error.

[0076] (Kinking Operation) Next, the operation of the processing unit 102 in kinking will be described. In the following description, the letter L will be used to indicate the lead wire 98 and gripping claw 67 on the outer mold claw 133L side, and the letter R will be used to indicate the lead wire 98 and gripping claw 67 on the outer mold claw 133R side. Figures 8 to 19 show the operation of the processing unit 102 in kinking. Also, in Figures 8 onward, some components are omitted from the illustration to avoid making the drawings too complex. Furthermore, in Figures 8 onward, there are parts that show the configuration of an embodiment different from that of Figures 1 to 7 described above. For example, in the configuration from Figure 8 onward, the drive plates 121 and 151 are made of multiple components instead of a single metal plate, which differs from the configuration shown in Figures 3 to 7.

[0077] First, as shown in Figure 8, the component mounting device 10 moves the chuck 66 holding the axial lead component 90 above the processing section 102. This axial lead component 90 is the axial lead component 90 after bending has been performed by the tape feeder 82 shown in Figure 3. Before starting the kinking process, the inner mold block 112 and the component mounting section 113 are positioned in a forward position towards the rear. The cam plate 108 is also positioned in a backward position. The inner mold claws 157L and 157R are close to each other. The outer mold block 109 has 108B inserted between a pair of rear end portions 147. The outer mold claws 133L and 133R are separated from each other. That is, the inner mold claws 157L and 157R and the outer mold claws 133L and 133R are in an open state.

[0078] The component mounting device 10 uses a mark camera 26 (see Figure 2) to image the identification information unit 146 and acquires information on the combination of the outer block 109 etc. based on the identification information unit 146. The component mounting device 10 determines whether the combination indicated by the identification information unit 146 matches the axial lead component 90 to be processed. For example, the control program that performs the control of mounting electronic components to the circuit board 12 has identification information set for the electronic component to be kinked. This identification information is information that can identify the identification information unit 146 corresponding to the electronic component to be processed. The component mounting device 10 determines whether the information indicated by the identification information unit 146 acquired using the mark camera 26 matches the identification information set in the control program. If they do not match, the component mounting device 10 reports an error; if they match, it starts the kinking process. Note that the component mounting device 10 does not need to read the identification information unit 146 every time it performs a kink. For example, the component mounting device 10 may perform the verification by the identification information unit 146 described above only when it performs kinking for the first time after the combination of the outer block 109 etc. has been changed.

[0079] Furthermore, the component mounting device 10 uses a mark camera 26 to capture images of a pair of position correction marks 181 and detects the positions of the pair of position correction marks 181 based on the captured data. Based on the positions of the detected pair of position correction marks 181, the component mounting device 10 detects the spacing WD and determines whether it matches the pitch PT of the lead wires 98 of the axial lead component 90 that will be kinked. The component mounting device 10 makes this determination based on information set in the control program, similar to the identification information unit 146. Also, similar to the identification information unit 146, the component mounting device 10 performs the spacing WD determination only when kinking is performed for the first time after, for example, a combination of the outer block 109, etc., has been changed.

[0080] Furthermore, the component mounting device 10 corrects the XY coordinates of the chuck 66 based on the positions of the detected pair of position correction marks 181. This corrects the mounting position error described above and allows the positions of the pair of lead wires 98 to be aligned with the positions of the lead insertion grooves 175 of the pair of lead guides 111L and 111R. The component mounting device 10 places the component body 96 above the component mounting section 113. The component mounting device 10 also aligns the position of lead wire 98L with the position of the lead insertion groove 175 of lead guide 111L, and the position of lead wire 98R with the position of the lead insertion groove 175 of lead guide 111R.

[0081] Next, as shown in Figure 9, the component mounting device 10 drives the drive source of the chuck 66, lowers the pusher 65, and brings the component body 96 into contact with the upper surface of the component mounting section 113. Each of the pair of lead wires 98L and 98R is inserted into the respective lead insertion grooves 175 of the lead guides 111L and 111R.

[0082] Next, as shown in Figure 10, the component mounting device 10 raises the pusher 65 of the chuck 66, releasing the grip of the pair of gripping claws 67, and raises the chuck 66. The axial lead component 90 is then supported by the component mounting section 113, with the component body 96 supported and the lead wires 98L and 98R held by the lead guides 111L and 111R.

[0083] Next, as shown in Figure 11, the component mounting device 10 drives the air cylinder 105 to advance the cam plate 108. The outer mold block 109 has its base end 108A inserted between a pair of rear end 147s, and rotates a pair of outer mold bars 132L and 132R. The pair of outer mold bars 132L and 132R rotate in a direction that brings a pair of outer mold claws 133L and 133R closer together, as indicated by the arrows in Figure 11. The pair of outer mold bars 132L and 132R are in a state that is approximately parallel to the sliding direction, i.e., the Y-axis direction. The pair of outer mold claws 133L and 133R move inward from the outside toward the pair of lead wires 98L and 98R of the axial lead component 90 placed on the component mounting section 113.

[0084] Furthermore, the inner mold block 112 has the tip portion 108C of the cam plate 108 inserted between a pair of inner mold claw portions 157L and 157R, causing the pair of inner mold bars 156L and 156R to rotate. The pair of inner mold bars 156L and 156R rotate in the direction that the pair of inner mold claw portions 157L and 157R move apart from each other in the X-axis direction. The pair of inner mold claw portions 157L and 157R move outward from the inside toward the pair of lead wires 98L and 98R of the axial lead component 90 placed on the component mounting portion 113. As a result, the outer mold claw portion 133L performs kinking with the lead wire 98L sandwiched between it and the inner mold claw portion 157L, and the outer mold claw portion 133R performs kinking with the lead wire 98R sandwiched between it and the inner mold claw portion 157R.

[0085] Next, the component mounting device 10 drives the air cylinder 105 to retract the cam plate 108. As shown in Figure 12, when the cam plate 108 is removed, the pair of inner claw portions 157L and 157R move inward in the X-axis direction due to the elastic force of the inner spring 158, and become closer to each other. Also, when the base end 108A is removed from between the pair of rear end portions 147 and the intermediate portion 108B is inserted, the pair of outer claw portions 133L and 133R move in a direction away from each other due to the elastic force of the outer spring 135. The pair of outer claw portions 133L and 133R become separated from each other.

[0086] Furthermore, Figure 13 shows the state of the pair of forced return members 127L and 127R when the claw portions shown in Figure 11 are closed. Also, Figure 14 shows the state of the pair of forced return members 127L and 127R when the claw portions shown in Figure 12 are open. As shown in Figure 13, when the cam plate 108 is in the advanced position, that is, when the outer mold block 109 and the inner mold block 112 are performing kinking, the pair of pins 136L and 136R are positioned between the pair of gap portions 128L and 128R in the X-axis direction, and are separated from the forced return members 127L and 127R. As the cam plate 108 retracts, pin 136L comes into contact with the inclined portion 130L and comes into contact with the contact portion 129L, as shown in Figure 14. Similarly, as the cam plate 108 retracts, pin 136R comes into contact with the inclined portion 130R and comes into contact with the contact portion 129R. The pair of pins 136L and 136R are positioned between the pair of contact portions 129L and 129R in the X-axis direction. The pair of outer bars 132L and 132R are subjected to a rotational force that opens the pair of outer claw portions 133L and 133R when the pair of pins 136L and 136R come into contact with the pair of forced return members 127L and 127R. This allows the pair of outer claw portions 133L and 133R to open more reliably.

[0087] Following Figure 12, the component mounting device 10 moves the work heads 60 and 62 to move the chuck 66 above the axial lead component 90, as shown in Figure 15. At this time, the component mounting device 10 aligns the positions of the pair of gripping claws 67L and 67R with the positions of the pair of lead guides 111L and 111R, i.e., the pair of lead wires 98L and 98R, just as when the axial lead component 90 was placed on the component mounting section 113. The component mounting device 10 may again correct the position by imaging the position correction mark 181 with the mark camera 26, or it may reuse the XY coordinates from when the axial lead component 90 was placed. That is, when the axial lead component 90 is placed on the component mounting section 113, the XY coordinates after position correction may be stored and reused when picking it up.

[0088] Next, as shown in Figure 16, the component mounting device 10 lowers the chuck 66 and positions a pair of gripping claws 67L and 67R on the outside of a pair of lead wires 98L and 98R. The gripping claw 67L is inserted from above between the outer claw portion 133L and the inner claw portion 157L, and the gripping claw 67R is inserted from above between the outer claw portion 133R and the inner claw portion 157R. For example, as shown in Figure 16, grooves 191 are formed on the inside of each of the pair of gripping claws 67L and 67R. The grooves 191 are formed along the longitudinal direction of the gripping claws 67L and 67R, that is, along the longitudinal direction of the lead wires 98L and 98R to be gripped. Therefore, the axial lead component 90 has its lead wires 98L and 98R inserted into the grooves 191 of the gripping claws 67L and 67R, respectively, and when the gripping force of the gripping claws 67L and 67R is released, it becomes movable along the grooves 191. In this state, when the axial lead component 90 is lifted by the lifter 115 (described later), it rises with its lead wires 98L and 98R inserted into the grooves 191 of the gripping claws 67L and 67R, respectively. Also, during the operations shown in Figures 15 and 16, the internal mold block 112 is in a rearward position. Consequently, the chuck 66 supports the axial lead component 90, which has been kinked and remains placed on the component mounting section 113.

[0089] Next, as shown in Figure 17, the component mounting device 10 drives the air cylinder 106 to move the inner mold block 112 forward, that is, to retract it. The component mounting section 113 retracts together with the inner mold block 112 and is removed from below the component body 96. Even without the support of the component mounting section 113, the component body 96 maintains its position, supported by the pair of lead wires 98L and 98R supported by the lead guides 111L and 111R.

[0090] Next, as shown in Figure 18, the component mounting device 10 drives the air cylinder 178 of the lifter 115 to raise the lift section 179. Since the component mounting section 113 is retracted, the component mounting section 113 is not positioned above the lift section 179. As the piston rod 115A rises, the lift section 179 pushes up the component body 96 of the axial lead component 90 from below. The pair of lead wires 98L and 98R rise while remaining inserted in the grooves 191 of the pair of gripping claws 67L and 67R. The pair of lead wires 98L and 98R are pulled out from the pair of lead guides 111L and 111R. Alternatively, only the lower part of the pair of lead wires 98L and 98R is inserted into the lead insertion groove 175, making them easy to remove.

[0091] As shown in Figure 19, the component mounting device 10 increases the gripping force of the gripping claws 67L and 67R, and grips the pair of lead wires 98L and 98R with the pair of gripping claws 67L and 67R. The component mounting device 10 raises the chuck 66 while gripping the pair of lead wires 98L and 98R with the pair of gripping claws 67L and 67R, and removes the axial lead component 90 from the pair of lead guides 111L and 111R. The component mounting device 10 then mounts the axial lead component 90, which has been kinked, onto the circuit board 12. The component mounting device 10 also drives the air cylinder 178 to lower the lift section 179 and return the processing section 102 to its initial state. In this way, the component mounting device 10 can perform kinking of the axial lead component 90 and mount the axial lead component 90. Furthermore, the component mounting device 10 may raise the chuck 66 in accordance with the rise of the lift section 179. In this case, the component mounting device 10 may, for example, increase the gripping force of the gripping claws 67L and 67R at the stage shown in Figure 16, grip the pair of lead wires 98L and 98R with the pair of gripping claws 67L and 67R, and raise the chuck 66 in synchronization with the rise of the lift section 179 in Figure 18. Therefore, the gripping claws 67L and 67R do not need to have grooves 191.

[0092] Furthermore, after the component mounting device 10 has completed the process of picking up the axial lead component 90 using the chuck 66, it determines, based on the detection signal from the optical sensor 118, whether or not the axial lead component 90 remains in the processing unit 102. This makes it possible to determine if a pickup error has occurred.

[0093] Incidentally, the correspondence between the terms used in this embodiment and the terms used in the claims will be explained below. The circuit board 12 of this embodiment is an example of a substrate of this disclosure. The mark camera 26 is an example of an imaging device. The work heads 60 and 62 are examples of transport heads. The axial lead component 90 is an example of an electronic component. The air cylinder 105 is an example of a drive source for a cam plate. The air cylinder 106 is an example of a drive source for an internal block. The bracket 119 is an example of a main body. The external spring 135 is an example of an external elastic member. The front end 139 is an example of a first end. The rear end 147 is an example of a second end. The internal spring 158 is an example of an internal elastic member.

[0094] As described above, the following effects are achieved according to this embodiment. One aspect of this embodiment includes an inner mold block 112 that opens and closes according to the position of the cam plate 108 and moves outward from the inside toward the pair of lead wires 98L and 98R of the axial lead component 90 placed on the component mounting section 113 as the cam plate 108 moves forward. The outer mold block 109 of the kink processing unit 81 moves inward from the outside toward the pair of lead wires 98L and 98R as the cam plate 108 moves forward, sandwiching each of the pair of lead wires 98L and 98R between itself and the inner mold block 112, and processing the pair of lead wires 98L and 98R into a kink shape.

[0095] According to this method, the internal claw portions 157L and 157R of the internal block 112 are moved outward in the X-axis direction while kinking is performed. Also, the external claw portions 133L and 133R of the external block 109 are moved inward in the X-axis direction while kinking is performed. As a result, a force is applied to the pair of lead wires 98L and 98R in the direction in which they face each other, i.e., in the X-axis direction, and kinking can be performed. This prevents the application of force in directions other than the direction in which the lead wires 98L and 98R face each other, as in the conventional technology, and allows for highly accurate kinking.

[0096] Furthermore, this disclosure is not limited to the above embodiments, and can be implemented in various forms with various modifications and improvements based on the knowledge of those skilled in the art. For example, in the above embodiments, axial lead components 90 are used as the electronic components of this application, but radial lead components may also be used. Also, in the above embodiments, each component such as the inner mold block 112 is fixed with bolts (bolts 161, etc.), but the fixing method is not limited to bolts. For example, each component may be fixed using screws. Alternatively, each component may be fixed in a way that prevents removal, such as by welding. Also, the configuration of the processing section 102 in the above embodiments is just one example. For example, the inner mold block 112 does not need to be equipped with an inner mold spring 158. For example, a drive source such as an air cylinder may be attached to each of the pair of inner mold bars 156L and 156R, and the inner mold bars 156L and 156R may be rotated individually. Similarly, the outer mold block 109 does not need to be equipped with an outer mold spring 135. The component placement section 113 may be a separate component from the internal mold block 112. In this case, the drive source for moving the component placement section 113 and the internal mold block 112 may be provided in the processing section 102. The identification information section 146 may be provided in the internal mold block 112 or the lift section 179, etc.

[0097] Furthermore, the contents of this disclosure are not limited to the dependency relationships described in the claims. For example, this specification also discloses a technical concept in which "the kink processing unit described in claim 1" in claim 4 is changed to "the kink processing unit described in any one of claims 1 to 3". This specification also discloses a technical concept in which "the kink processing unit described in claim 1" in claim 7 is changed to "the kink processing unit described in any one of claims 1 to 6". This specification also discloses a technical concept in which "the kink processing unit described in claim 7" in claim 10 is changed to "the kink processing unit described in any one of claims 7 to 9". This specification also discloses a technical concept in which "the kink processing unit described in claim 7" in claim 11 is changed to "the kink processing unit described in any one of claims 7 to 10". This specification also discloses a technical concept in which "the kink processing unit described in claim 1" in claim 12 is changed to "the kink processing unit described in any one of claims 1 to 11". Furthermore, this specification also discloses a technical concept in which "the kinking unit described in claim 1" in claim 13 is changed to "the kinking unit described in any one of claims 1 to 12".

[0098] 10 Component mounting device, 12 Circuit board (substrate), 26 Mark camera (imaging device), 60, 62 Work head (transport head), 81 Kink processing unit, 90 Axial lead component (electronic component), 98, 98L, 98R Lead wire, 103 Control board, 105 Air cylinder (drive source for cam plate), 106 Air cylinder (drive source for internal block), 108 Cam plate, 109 External block, 111L, 111R Lead guide, 112 Internal block, 113 Component mounting section, 115 Lifter, 118 Optical sensor, 119 Bracket (main body), 127L, 127R Forced return member, 128L, 128R Spacing section, 129L, 129R Contact section, 131L, 131R External rotation shaft, 132L, 132R External bar, 133L, 133R External claw part, 135 External spring (external elastic member), 136L, 136R Pin, 139 Front end (first end), 146 Identification information part, 147 Rear end (second end), 153 Base part, 155L, 155R Internal rotating shaft, 156L, 156R Internal bar, 157L, 157R Internal claw part, 158 Internal spring (internal elastic member), 169 Optical axis, 181 Position correction mark, PT pitch, WD spacing.

Claims

1. A kinking unit comprising: a drive source for a cam plate; a cam plate that moves forward and backward along a sliding direction based on the drive of the cam plate drive source; a component mounting section on which an electronic component having a pair of lead wires can be mounted; an inner mold block that opens and closes according to the position of the cam plate and moves outward toward the lead wires from the inside toward the lead wires of the pair of lead wires of the electronic component mounted on the component mounting section as the cam plate moves forward; and an outer mold block that opens and closes according to the position of the cam plate and moves inward toward the lead wires from the outside toward the lead wires as the cam plate moves forward, sandwiching each of the pair of lead wires between itself and the inner mold block, and processing the pair of lead wires into a kink shape.

2. The internal mold block comprises a base portion, a pair of internal mold rotating shafts attached to the base portion, a pair of internal mold bars rotatably attached to each of the pair of internal mold rotating shafts, and a pair of internal mold claw portions provided on each of the pair of internal mold bars and facing outward relative to the internal mold bars, wherein the internal mold block is configured such that the cam plate is inserted between the pair of internal mold claw portions, causing the pair of internal mold bars to rotate and the pair of internal mold claw portions to move away from each other, thereby processing the pair of lead wires into a kink shape, as described in claim 1.

3. The internal mold block further comprises an internal mold elastic member provided on the internal mold bar on the opposite side of the internal mold claw portion with the internal mold rotation axis in between, and positioned between a pair of internal mold bars, wherein the internal mold block is configured such that when the cam plate is inserted between a pair of internal mold claw portions, the pair of internal mold bars rotate, the pair of internal mold claw portions move away from each other, and the internal mold elastic member is compressed and deformed, and when the cam plate is removed from between the pair of internal mold claw portions, the pair of internal mold bars rotate due to the elastic force of the internal mold elastic member, and the pair of internal mold claw portions move towards each other, as described in claim 2.

4. The kinking unit according to claim 1, wherein the outer mold block comprises: a pair of outer mold rotating shafts attached to the main body of the kinking unit; a pair of outer mold bars rotatably attached to each of the pair of outer mold rotating shafts; and a pair of outer mold claws attached to the first end of each of the pair of outer mold bars and attached inward relative to the outer mold bars, wherein each of the pair of outer mold bars is positioned such that the second end opposite to the first end contacts the cam plate, and the cam plate is inserted between the pair of second ends of the outer mold block, and as the cam plate moves forward, the pair of outer mold bars rotate, the pair of outer mold claws move toward each other, and the pair of lead wires are processed into a kink shape.

5. The kinking unit according to claim 4, wherein the outer block further comprises an outer elastic member disposed between a pair of second ends, and the outer block is configured such that when the cam plate moves forward, the pair of outer bars rotate, the pair of outer claws move toward each other, and the outer elastic member stretches and deforms, and when the cam plate moves backward, the pair of outer bars rotate due to the elastic force of the outer elastic member, and the pair of outer claws move toward each other.

6. The kinking unit according to claim 5, wherein each of the pair of outer mold bars is fitted with a pin, and the cam plate is fitted with a pair of force return members that contact each of the pair of pins, and each of the pair of force return members has a contact portion positioned at a predetermined distance apart and a spacing portion positioned at a wider distance than the contact portion, and the pair of force return members move forward and backward together with the cam plate, and when the cam plate is in an advanced position, the pair of pins are positioned between the pair of spacing portions, and as the cam plate moves backward, the contact portion is brought into contact with the pair of pins, and the pair of outer mold bars are rotated in a direction in which the pair of outer mold claws move apart from each other.

7. The kinking unit according to claim 1, further comprising a pair of lead guides for holding the ends of each of the pair of lead wires, each of the pair of lead guides being positioned below the outer mold block and the inner mold block, and holding the pair of lead wires at a position below the portion sandwiched between the outer mold block and the inner mold block.

8. The kinking unit according to claim 7, further comprising a drive source for the internal mold block that moves the internal mold block forward and backward along the sliding direction, the component mounting section being attached to the internal mold block and moving forward and backward together with the internal mold block based on the drive source for the internal mold block, and the pair of lead guides holding the respective ends of the pair of lead wires before and after the component mounting section retracts from the position on which the electronic component is mounted, thereby maintaining the orientation of the electronic component.

9. The kinking unit according to claim 8, further comprising a lifter that moves up and down, wherein the distance between the pair of lead guides is the distance corresponding to the pitch of the pair of lead wires, the pair of lead wires are inserted between the pair of lead guides so as to be in contact with each of the pair of lead guides from the inside, the lifter is positioned in a lowered position when the electronic component is placed on the component mounting section, and rises after the component mounting section has moved back from the position on which the electronic component is placed, raising the electronic component and moving the electronic component in a direction that removes the pair of lead wires from the pair of lead guides.

10. The kinking unit according to claim 7, wherein the internal mold block, the external mold block, and the pair of lead guides are used in different combinations depending on the type of electronic component, and further comprises an identification information unit capable of identifying the combination of the internal mold block, the external mold block, and the pair of lead guides, and the identification information unit is provided in a position where it can be imaged by an imaging device that moves together with a transport head that transports the electronic component to the component placement section.

11. The kinking unit according to claim 7, wherein each of the pair of lead guides is provided with a position correction mark, each of the pair of lead guides has a symmetrical shape and is detachable from the main body of the kinking unit, each of the pair of lead guides is provided with the position correction mark at the same position, and each of the pair of position correction marks is provided in a position where it can be imaged by an imaging device that moves together with a transport head that transports the electronic component to the component placement section.

12. The kink processing unit according to claim 1, further comprising: a control board for controlling the drive source for the cam plate; and a light sensor connected to the control board, the optical axis of which is set toward the electronic component placed on the component mounting section, wherein the control board receives a detection signal from the light sensor after completing the control of picking up the electronic component, which has been processed into a kink shape, from the component mounting section by a transport head.

13. A component mounting device for mounting electronic components onto a substrate, comprising: a kinking unit as described in claim 1; and a transport head for transporting the electronic components to the component mounting section.

Images