Loading machine

Abstract

To measure the electrical characteristics of components as needed.SOLUTION: A loading machine includes a component supplying device that supplies components, an inspection device that measures the electrical characteristics of the components when the component supplying device is newly set or replaced, and a waste bin that stores the components whose electrical characteristics have been measured. The electrical characteristics of the components are measured when the component supplying device is newly set or replaced. It becomes possible to measure the electrical characteristics of the components as needed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a mounting machine including an inspection device for measuring electrical characteristics of components mounted on a circuit board. [Background technology]

[0002] Patent documents 2 and 3 describe an inspection device that is equipped with a probe and measures the electrical characteristics of a component by contact with the probe. Patent document 1 describes an inspection device that clamps a component placed on a holder from both ends and measures the electrical characteristics. In this inspection device, air is supplied from air outlet 28 along the V-groove of the holder, and the measured component on the V-groove is sent to inlet 7'. Then, defective components are discarded and non-defective components are used for mounting on a circuit board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 52-30703 [Patent Document 2] Japanese Utility Model Application Publication No. 1-76100 [Patent Document 3] International Publication No. 2014 / 155657 Brochure Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present invention is to make it possible to measure the electrical characteristics of a component as needed.

[0005] The placement machine according to the present invention includes a component supplying device that supplies components, an inspection device that measures electrical characteristics of the components when the component supplying device is newly installed or replaced, and a waste bin that stores the components whose electrical characteristics have been measured. The electrical characteristics of the components are measured when the component supplying device is newly installed or replaced. It becomes possible to measure the electrical characteristics of the components as needed. [Brief description of the drawings]

[0006] [Figure 1] 1 is a perspective view of a mounting machine including an inspection device according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a perspective view of a main part of the inspection device. [Diagram 3] FIG. 2 is a cross-sectional view of a main part of the inspection device. [Figure 4] FIG. 2 is a partial plan view of the inspection device. [Diagram 5] FIG. 4 is an air circuit diagram included in the inspection device. [Figure 6] FIG. 2 is a diagram conceptually illustrating a control device of the placement machine. [Figure 7] 1A is a flow chart showing an LCR measurement program stored in a storage unit of the control device, and FIG. 1B is a time chart showing a case where LCR is measured in the inspection device. [Figure 8] 5 is a flowchart showing a part suitability determination program stored in a storage unit of the control device. [Figure 9] 1A to 1D are diagrams showing the operation of the inspection device, in which (a) is a diagram showing an initial state, (b) is a diagram showing a clamped state, (c) is a diagram showing a measurement state, and (d) is a diagram showing a disposal state. [Figure 10] FIG. 3 is a perspective view of the inspection device as seen from an angle different from that of FIG. 2. EMBODIMENTS OF THE PRESENTINVENTION

[0007] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A mounting machine including an inspection device according to an embodiment of the present invention will be described below in detail with reference to the drawings. The mounting machine shown in FIG. 1 mounts components onto a circuit board, and includes an apparatus main body 2, a circuit board conveying and holding device 4, a component supplying device 6, a head moving device 8, and the like. The circuit board transport and holding device 4 transports and holds the circuit board P (hereinafter, abbreviated as board P) in a horizontal position, and in FIG. 1, the transport direction of the board P is the x direction, the width direction of the board P is the y direction, and the thickness direction of the board P is the z direction. The y direction and the z direction are the front-to-back and up-to-down directions of the mounting machine, respectively. The x direction, y direction, and z direction are perpendicular to each other. The component supply device 6 supplies electronic components (hereinafter, abbreviated as components) s to be mounted on the board P, and includes a plurality of tape feeders 14 and the like. The head moving device 8 holds a mounting head 16 and moves it in the x, y, and z directions, and the mounting head 16 has a suction nozzle 18 that suctions and holds the components s.

[0008] Further, reference numeral 20 denotes a camera. The camera 20 captures an image of the component s held by the suction nozzle 18, and based on the image captured by the camera 20, it is determined whether or not the component s is to be mounted on the circuit board P. Reference numeral 22 denotes an inspection device. The inspection device 22 measures and inspects the electrical characteristics of the component s. The electrical characteristics of the component s are measured, and the measured electrical characteristics are used as information about the component s included in the JOB information ( It is determined whether the electrical characteristics of the component S that is to be used in the next operation match those of the component S that is to be used in the next operation. The electrical characteristics of the component s include L (inductance), C (capacitance), R (resistance), Z′ (impedance), etc., and the inspection device 22 measures one or more of these.

[0009] The inspection device 22 is provided on the main body of the circuit board conveying and holding device 4 via a waste bin 26. The waste bin 26 and the inspection device 22 are connected by a disposal passage 28, and the parts s whose electrical characteristics have been measured are stored in the waste bin 26 via the disposal passage 28. The inspection device 22 is provided on the waste bin 26 so that its height can be adjusted. As shown in Figs. 2 and 10, a base portion 30 is engaged with the waste bin 26 so as to be movable up and down, and a main body 29 is fixed to the base portion 30 by fastening portions 31 (see Figs. 3, 4, and 10) including bolts and nuts, and the base portion 30 and the main body 29 are held integrally so as to be movable up and down. In addition, the main body 29 and the base portion 30 are provided with openings 29a and 30a, respectively, which can communicate with the disposal passage 28 (see Figs. 3 and 4). 2 to 4 and 10, the inspection device 22 includes (i) the main body 29 and base portion 30, (ii) a holder 32 capable of holding the component s, (iii) a pair of probes 37 consisting of a stator 34 and a mover 36, (iv) a holder moving device 40 for moving the holder 32, (v) a mover moving device 41 for moving the mover 36 toward and away from the stator 34, and (vi) an LCR detection unit 42 as an electrical characteristic detection unit. In this embodiment, the component s has electrodes on both ends and can be held by the pair of probes 37. An example of the component s is what is called a square chip.

[0010] The holder 32 includes a component placement portion 44 and a placement portion holder 46 that holds the component placement portion 44. A V-groove 44c is formed on the upper surface of the component placement portion 44, and the component s is placed in the V-groove 44c. Because of the V-shape, the position of the component s is determined with high precision. The component placement portion 44 may be made of a material that is conductive, wear-resistant, and resistant to oxidation. The component placement portion 44 is electrically connected to the base portion 30 via a plurality of conductive members, and the component placement portion 44 is also grounded when the base portion 30 is grounded. In this embodiment, the component placement portion 44 abuts against the placement portion holder 46 and is fixed by the fastening portion 47, and the placement portion holder 46 abuts against the main body 29 via a stopper 80 (see FIG. 3), and the main body 29 is fixed to the base portion 30 by the fastening portion 31. The placement portion holder 46, the stopper 80, the main body 29, the base portion 30, the fastening portions 31, 47, etc. are conductive. Therefore, the component placement portion 44 is grounded. In this way, the component placement portion 44 is manufactured from a conductive material and is grounded, so that the component s placed on the component placement portion 44 can be de-electrified. Furthermore, the component placement portion 44 is manufactured from a wear-resistant material, so that wear of the component placement portion 44 can be suppressed and durability can be improved. Furthermore, the component placement portion 44 can be made less susceptible to rust by being manufactured from a material that is less susceptible to oxidation, that is, a material on which a passivation film, which is a metal oxide film, can be formed. It is possible to make the component s less susceptible to rust, and to suppress a decrease in the measurement accuracy of the electrical characteristics of the component s. For example, the component placement portion 44 can be manufactured from an aluminum alloy, a stainless steel material, or the like.

[0011] The stator 34 and the mover 36 have opposing surfaces 34f and 36f, respectively, which face each other, and the part s is held by the pair of opposing surfaces 34f and 36f. The stator 34 is fixed to the main body 29 via the stator holder 55. The mover 36 is held by the mover holder 56 so as to be integrally movable, and is capable of approaching and moving away from the stator 34. In this embodiment, the opposing surface 36f has a triangular cross section and is capable of moving along the V-groove 44c. In other words, the shape of the opposing surface 36f of the mover 36 is substantially equivalent to the V-groove 44c, and the opposing surface 36f of the mover 36, the opposing surface 34f of the stator 34, and the V-groove 44c of the holder 32 are located at substantially the same height. Therefore, no matter where the part s is in the V-groove 44c, the part s can be held by the pair of opposing surfaces 34f and 36f. In this embodiment, the mover 36 is a longitudinal member extending in the y direction (movement direction) and is held by the mover holder 56 at its rear end. Furthermore, the rear part of the mover 36, including the facing surface 36f, is shaped so that there is no part that protrudes from the tip in the x direction. As a result, the holder 32 and the mover 36 are movable relative to each other, and the holder 32 can move forward or backward on the facing surface 36f with the bottom of the V-groove 44 positioned below the mover 36. Furthermore, an electric circuit 58 is formed including a pair of probes 37 consisting of the mover 36 and the stator 34, an LCR detector 42, a power supply device (not shown), and the like. A current is supplied between the stator 34 and the mover 36 and the current that flows is detected, and the electrical characteristics of the component s are measured by the LCR detector 42 based on the relationship between these. The LCR detector 42 is not limited to a detector that detects L, C, and R, but may be a detector that detects one or more physical quantities that represent electrical characteristics such as L, C, R, and Z'. Reference numerals 58a and b in Figs. 2 to 4 denote connection portions of the pair of probes 37 to the electric circuit 58.

[0012] A cover portion 50 is attached to the holder 32. The cover portion 50 includes a pair of cover plates 52, 54 that are spaced apart from each other in the x direction and provided on both sides of the V-groove 44c. The cover plates 52, 54 are provided on the stator 34 side of the holder 32, and extend in the y direction and z direction, i.e., in the moving direction of the holder 32 and the mover 36 and in the up-down direction, and are formed into a bent plate-like member. The cover plate 52 has a groove shape in a plan view and includes a bottom plate 52a and side plate portions 52b, 52c that are provided on both sides of the bottom plate 52a and spaced apart from each other in the x direction. The bottom plate 52a has a bent lower portion and is L-shaped in a side view, and is attached at its upper portion to the side surface of the component placement portion 44 on the stator 34 side. In addition, at the forward end position of the holder 32, the lower part of the bottom plate 52 is located above the stator holder 55, the side plate 52b is located outside the stator 34 and above the stator holder 55, and the side plate 52c is located outside the side plate 52b and outside the stator holder 55. The side plate 52c has a larger vertical dimension than the side plate 52b, and its lower end extends to the vicinity of the opening 29a of the main body 29. The cover plate 54 is attached to the placement portion holder 46 on the opposite side of the cover plate 52 with respect to the V-groove 44c. The cover plate 54 is located outside the stator holder 55 at the forward end position of the holder 32. The cover plate 54 is bent in the vertical direction and its lower end extends to the vicinity of the opening 29a of the main body 29. In addition, the y-direction dimensions of the side plate portion 52c and the cover plate portion 54 are large enough to cover almost the entire space between the pair of opposing surfaces 34f, 36f from the x-direction at least for a period of time when the stator 34 and the movable member 36 are separated from each other. As will be described later, the cover portion 50 serves to prevent the diffusion of air and to prevent the components s, which have been dropped by the ejection of air, from scattering.

[0013] An opening 60a of an air passage 60 facing the facing surface 36f of the mover 36 is formed in a member on the stator side {for example, an upper portion of the stator 34, or a portion of the stator holder 55 above the stator 34, or the main body 29}. The air passage 60 includes an air ejection passage 60s extending generally in the y direction as shown in FIG. 3, an internal passage 60h formed in the main body 29, and the like. The air ejection passage 60s extends at an incline downward as it approaches the mover 36, and when the mover 36 is in a position separated from the stator 34, an extension line k extends in a state where it reaches above or within the portion R of the facing surface 36f of the mover 36. The portion R is a portion of the facing surface 36f of the mover 36 that frequently grips the part s, and can be called a gripping portion. Air hits the portion where the extension lines k of the facing surface 36f intersect from diagonally above. Air cylinders 64, 70 are connected to the air passage 60. An ionizer 62 is provided in the air passage 60 downstream of the air cylinders 64, 70. The ionizer 62 ionizes air by generating a corona discharge, and the ionized air can be supplied to the opposing surface 36f.

[0014] The support table moving device 40 includes an air cylinder 64 as a drive source fixedly provided on the main body 29 or the base portion 30. The placement portion holder 46 is connected to a piston rod 66 (see FIG. 5) of the air cylinder 64. The air cylinder 64 includes two air chambers 64a, 64b separated by a piston inside a cylinder housing, and an electromagnetic valve device 69 is provided between the two air chambers 64a, 64b and an air source 68, an air passage 60, and a filter (atmosphere). The electromagnetic valve device 69 may include one or more electromagnetic valves, for example, a directional control valve and a variable throttle as shown in FIG. 5. The direction of movement of the placement portion holder 46 is controlled by the directional control valve, and the movement and stop of the placement portion holder 46 is controlled by the variable throttle. By the solenoid valve device 69, the air chamber 64b is connected to the air source 68 and the air chamber 64a is connected to the air passage 60, thereby moving the holding base 32 forward (moving in the direction of arrow F in Figure 3), and by opening the air chamber 64b to the atmosphere and connecting the air chamber 64a to the air source 68, the holding base 32 is moved backward (moving in the direction of arrow B in Figure 3).

[0015] The movable piece moving device 41 includes an air cylinder 70 as a driving source fixedly provided on the main body 29. A movable piece holding body 56 that can move integrally with the movable piece is connected to a piston rod 71 of the air cylinder 70. Two air chambers 70a, 70b separated by a piston inside the housing of the air cylinder 70 are connected to an air source 68, an air passage 60, and a filter (atmosphere) via an electromagnetic valve device 72. The electromagnetic valve device 72 includes one or more electromagnetic valves, and may include, for example, a directional control valve, a variable throttle, etc. The electromagnetic valve device 72 connects the air chamber 70b to the air passage 60 and the air chamber 70a to the air source 68, thereby moving the movable piece 36 backward, and opens the air chamber 70a to the atmosphere and connects the air chamber 70b to the air source 68, thereby moving the movable piece 36 forward. In this embodiment, the air cylinders 64, 70, the air passage 60 (including the air ejection passage 60s), the opening 60a, the cover 50, the ionizer 62, etc. constitute an air supply device 73. The air supply device 73 also serves as a mover supply unit and a drive source-linked supply unit. The opposing surface 36f corresponds to the supply target surface. The structure of the solenoid valve devices 69 and 72 is not limited to that of the present embodiment. For example, they may include one three-position valve or multiple on-off valves. Also, it is not essential to provide the ionizer 62.

[0016] A pair of guide rods 74, 75 extending in the y direction are provided between the mover holder 56 and the main body 29, and a pair of guide rods 76, 77 extending in the y direction are provided between the holder 32 and the mover holder 56. One end of the guide rods 74, 75 is connected to the mover holder 56, and the other end is slidably engaged with the main body 29. One end of the guide rods 76, 77 is connected to the placement portion holder 46, and is slidably engaged with the mover holder 56. These guide rods 74, 75 and 76, 77 allow the holder 32 and the mover 36 to move relatively to each other in the y direction with respect to the main body 29, and allow the holder 32 and the mover 36 to move relatively to each other in the y direction. 3, a stopper 82 is provided on the stator side of mover holder 56, and a stopper 80 is provided on the portion of main body 29 that holds stator holder 55. Stopper 82 determines the approach limit between mover holder 56 and holder 32 (mounting portion holder 46), and stopper 80 determines the approach limit between stator 34 (main body 29) and holder 32 (mounting portion holder 46). In this embodiment, the guide rods 74 to 77 are shared by the holder-stage moving device 40 and the mover moving device 41, and the stoppers 80 and 82 can be considered to be components of the holder-stage moving device 40. As shown in FIG. 3, the gap Ld between the front end of the stopper 82 when the movable member 36 is in the retracted end position and the placement portion holder 46 when the holder 32 is in the forward end position is the distance over which relative movement between the movable member 36 and the holder 32 is permitted.

[0017] The placement machine includes a control device 100. As shown in FIG. 6, the control device 100 includes a controller 102 mainly composed of a computer and a plurality of drive circuits 104. The controller 102 includes an execution unit 110, a storage unit 112, an input / output unit 114, etc., and the board transport / holding device 4, the component supplying device 6, and the head moving device 8 are connected to the input / output unit 114 via the drive circuits 104, and the movable element moving device 41, the solenoid valve devices 69, 72 of the holder moving device 40, etc. are also connected to the input / output unit 114. In addition, an LCR detection unit 42, a display 116, a movable element position sensor 118, a holder position sensor 120, a nozzle height sensor 122 for detecting the height of the nozzle 18, etc. are also connected to the input / output unit 114. In the storage unit 112, a plurality of programs and tables, such as an LCR detection program shown in the flow chart of FIG. 7(a), are stored. In addition, a timer 124 provided in the controller 102 measures time. In this embodiment, the case has been described where the entire mounting machine is controlled by the control device 100, but it is also possible to configure the board transport and holding device 4, component supply device 6, head moving device 8, etc. to be each controlled by an individual control device.

[0018] The operation of the placement machine will now be described. When a changeover is performed, a new tape feeder 14 is set, or a tape feeder 14 is replaced, the electrical characteristics of the component s held in that tape feeder 14 are measured to check whether the tape feeder 14 (or the component s) is suitable. The test results are displayed on the display 116. If the tape feeder 14 is not suitable, it is replaced.

[0019] The electrical characteristics of the component s are measured by executing an LCR measurement program shown in the flow chart of Fig. 7(a). The movements of the support table 32 and the mover 36, and the states of the support table position sensor 120 and the mover position sensor 118 are shown in Fig. 7(b). The inspection device 22 is always in the initial state shown in Fig. 9(a). The mover 36 is in the retracted end position, and the holder 32 is in the advanced end position, i.e., in the position where it abuts against the stopper 80. In this state, the holder 32 is in an earthed state due to internal conduction or the like. The mover 36 is not present above the V-groove 44c of the holder 32, and the component s can be placed thereon. The cover parts 50 are located on both sides of the stator 34 (spaced apart in the x direction). The mover position sensor 118 and the holder position sensor 120 are both in the ON state. In step 1 (hereinafter abbreviated as S1, the same applies to the other steps), it is determined whether or not a command to measure the electrical characteristics of component s has been issued. A command to measure the electrical characteristics is issued when a changeover is to be performed, etc. When a measurement command is issued, in S2, the mounting head 16 is moved, and, for example, the component s held by the newly attached tape feeder 14 is picked up by the suction nozzle 18 and placed on the V-groove 44c of the holding table 32. The suction nozzle 18 is lowered and the component s is released, indicating that the component s has been placed on the V-groove 44c.

[0020] Then, when the nozzle height sensor 122 detects that the suction nozzle 18 has placed the component s on the V-groove 44c and reached the upper end, in S3, the solenoid valve device 72 controls the mover 36 to advance, and the mover position sensor 118 is switched from ON to OFF. The facing surface 36f at the tip of the mover 36 advances along the V-groove 44c of the component placement unit 44, and the component s is clamped by the facing surface 36f and the facing surface 34f of the stator 34 (FIG. 9(b)). In this embodiment, the stroke L1 (see FIG. 3) of the mover 36 from the retreat end position to clamping the component s is determined in advance based on the size of the component s to be clamped, etc. After a forward movement time, which is the time required for the mover 36 to advance the stroke L1 from the start of the forward movement of the mover 36, has elapsed, the forward movement of the mover 36 is stopped by the control of the variable throttle, etc. The forward movement time is measured by the timer 124. The clamped state is when the support table 32 is at the forward end position, the mover 36 is advanced, and the part s is clamped by the pair of opposing surfaces 34f, 36f.

[0021] In S4, the holder 32 is moved backward by the control of the solenoid valve device 69, and the holder position sensor 120 is switched from ON to OFF. The holder 32 is moved backward until it abuts against the stopper 82 (FIG. 9(c)) and is held in that position. The stroke of the holder 32 during this period is L2 (see FIG. 3). L2=Ld-L1 In this embodiment, the stroke L2 is set to a value equal to or larger than the set value Lx (L2≧Lx), and the component placement part 44 is spaced apart from the component s by the set value Lx or more. If a conductive member (component placement part 44) is located near the component s during measurement of the electrical characteristics, electrostatic induction or eddy currents may occur, making it impossible to accurately detect the electrical characteristics. On the other hand, if the component placement part 44 is spaced apart from the component s by the set value Lx or more (if the shortest distance between the component placement part 44 and the component s is set to be equal to or larger than the set value Lx), the measurement error of the electrical characteristics caused by the component placement part 44 being located near the component s can be reduced. In this way, the set value Lx is a distance at which the component placement part 44 is unlikely to affect the measurement of the electrical characteristics of the component s, and is a value obtained in advance by experiments or the like. This state is the measurement state. After a retraction time Ta, which is the time required for the holder 32 to retract by the stroke L2 from the start of the retraction of the holder 32, has elapsed, the position of the holder 32 is maintained by control of the solenoid valve device 69. The retraction time Ta is measured by a timer 124.

[0022] In S5, the component s is released by the suction nozzle 18 and placed on the V-groove 44c, and the set charge removal time is awaited to elapse. Each of the components s held by the tape feeder 14 is charged with static electricity generated due to vibrations caused by the transport of the tape feeder 14, contact with objects, and the like. The charged components s are removed by being placed on the component placement unit 44, which is made of a conductive material and is grounded, or by discharging into the air. The charge removal time is the time required to remove the static electricity of a capacity estimated to be possessed by the component s, and can be obtained in advance by experiments, etc., or theoretically based on the size, characteristics, etc. of the component s. When the elapsed time since the component s was placed on the component holder 44 reaches the charge removal time, the determination in S5 becomes YES, and the electrical characteristics of the component s are measured in S6. Then, when the measurement time required to measure the electrical characteristics has elapsed, S7 is executed, but the measurement time may be a time determined depending on the type of component s or the like, or may be a fixed time. In either case, it is acquired and stored in advance.

[0023] When the measurement time has elapsed and the measurement of the electrical characteristics of the component s has ended, in S7, the movable element 36 is moved backward by the control of the solenoid valve device 72. When the movable element 36 reaches the backward end, the movable element position sensor 118 is turned ON. In S8, the holder 32 is moved backward by the control of the solenoid valve device 69 (FIG. 9(d)). The stroke from the measurement state until the holder 32 abuts against the stopper 82 of the movable element 36 at the backward end position is L1. Therefore, it can be seen that the holder 32 abuts against the stopper 82 after the backward time Tb, which is the time required for the holder 32 to move backward by the stroke L1, has elapsed. As shown in FIG. 9(d), the holder 32 is located behind the opposing surface 36f of the movable element 36 and is not present below between the pair of opposing surfaces 34f, 36f. This state is the discard state. When the holder 32 is moved backward until it abuts against the stopper 82, in S9, the solenoid valve device 69 controls the air chamber 64b in the air cylinder 64 to communicate with the air source 68 and the air chamber 64a to communicate with the air passage 60. When the holder 32 is moved forward and abuts against the stopper 80, the holder position sensor 120 turns ON. The holder 32 is located between the pair of opposing surfaces 34f, 36f (the V-groove 44 is located below and between the opposing surfaces 34f, 36f), and there is space above the V-groove 44c. Therefore, the component s can be placed. This state is the initial state.

[0024] As the opposing surface 36f of the mover 36 moves away from the opposing surface 34f of the stator 34, the component s that was held therebetween is released. When the mover 36 moves backward, the air chamber 70a of the air cylinder 70 is connected to the air passage 60, and the cover plates 52, 54 are located on both sides in the x direction of the space between the pair of opposing surfaces 34f, 36f. As the holder 32 is moved rearward of the opposing surface 36f of the mover 36, it is no longer located below the space between the pair of opposing surfaces 34f, 36f, and the space between the pair of opposing surfaces 34f, 36f is connected to the openings 29a, 30a and the waste passage 28. As the mover 36 retreats, air flowing out of the air chamber 70a is supplied from the opening 60a to the opposing surface 36f of the mover 36 from above at an angle, and the space to which the air is supplied, in other words, the space between the pair of opposing surfaces 34f, 36f, is covered from the x direction by the cover part 50. The air mainly hits the opposing surface 36f and then flows downward along the opposing surface 36f. Therefore, even if the part s does not fall from the opposing surface 36f and is attached to the portion R, it can be dropped well. In addition, since the air flows in a vortex inside the cover part 50, even if the part s is attached to the opposing surface 34f of the stator 34, it can be dropped. Furthermore, the component s that has fallen from the opposing surfaces 34f, 36f and landed on the holder 32 can also be dropped by the air, but even if the component s is placed on the V-groove 44 and does not fall by the air, it can be reliably dropped by the advancement of the opposing surface 36f of the mover 36 accompanying the retreat of the holder 32. Thus, in this embodiment, the discarded state can be considered as a state in which the component s has been successfully dropped. The parts s that have fallen from the pair of opposing surfaces 34f, 36f are properly received in the waste box 26 via the openings 29a, 30a and the disposal passage 28.

[0025] Furthermore, the provision of the cover portion 50 can prevent the dropped component s from scattering. Since the side plate portion 52c of the cover plate portion 52 and the lower end portion of the cover plate portion 54 extend to the vicinity of the opening 29a of the main body 29, the component s can be smoothly stored in the trash can 26 through the opening 29a and the disposal passage 28. On the other hand, when ionized air is supplied, it is possible to electrically neutralize the opposing surfaces 36f, 34f of the mover 36 and the stator 34, and the measurement accuracy of the electrical characteristics of the next component s can be improved. Furthermore, in the air cylinder 64, the air chamber 64a is connected to the air ejection passage 60s when the holder 32 moves forward (S9). Even when transitioning from the disposal state to the initial state, air can be supplied to the facing surface 36f of the movable member 36, and static electricity can be effectively removed from the facing surface 36f of the movable member 36.

[0026] On the other hand, the measured electrical characteristics are compared with the electrical characteristics included in the JOB information to determine whether the part s should be used in the job to be performed, and the result of the determination is shown on the display 116. In S21, the measured values ​​of the electrical characteristics of the component s are obtained, and in S22, the corresponding information is read from the job information of the next job. In S23, these are compared to determine whether they match. Whether they match or not, the result of the determination is displayed on the display 116. If they do not match, an appropriate tape feeder is replaced, or some other action is taken.

[0027] As described above, in this embodiment, the component placement portion 44 is made of a conductive material and is grounded. As a result, the component s placed on the component placement portion 44 can be de-electrified well before the measurement of its electrical characteristics. On the other hand, if the component s is charged, it is difficult to measure the impedance of the component s. In contrast, in this embodiment, the component s is de-electrified well, so that the impedance of the component s can be measured well. Furthermore, the component s can be dropped into the disposal path 28 in parallel with the retraction of the movable member 36, and the time required to measure the electrical characteristics can be shortened compared to when the retraction of the movable member and the delivery of the component s are performed in separate processes.

[0028] As described above, in this embodiment, the movement control device and the relative movement control device are constituted by the part that stores and executes S4, 7, and 8 of the LCR measurement program of the controller 102, the timer 124, the mover position sensor 118, the holder table position sensor 120, etc. Among these, the part that stores and executes S4 constitutes the measurement control unit, the part that stores and executes S8 constitutes the disposal control unit, and the part that stores and executes S9 constitutes the preparation control unit. The movement control device also serves as the holder table movement control device and the relative movement control unit. Moreover, the air cylinder 70 corresponds to the cylinder for the mover, and the air cylinder 64 corresponds to the cylinder for the holder. The air supply device 73 also serves as a mover supply unit and a drive source-linked supply unit. Furthermore, the pair of probes 37, the electric circuit 58 including the LCR detection unit 42, the part of the controller 102 that stores S6, the part that executes it, etc. constitute an electric characteristic acquisition device. Furthermore, S3 corresponds to a clamping step, S4 and S6 correspond to a measuring step, S7 and S8 correspond to a discarding step, and S9 corresponds to a preparation step.

[0029] It is also possible to make both of the pair of probes movable and to fix the holder to the main body. Even in this case, the pair of probes can grip the component s placed on the holder and move the pair of probes to separate the holder from the component s by a set distance or more. The holding table can also be made movable in the vertical direction. Even in this case, the holding table can be moved away from the component s by a set distance or more while the component s is clamped by the pair of probes. Furthermore, the air ejection passage can be provided on the side of the main body 29 of the inspection device 22 with an opening that opens generally in the x direction. In other words, one of the cover plates 52, 54 can be eliminated (for example, the cover plate 54 can be eliminated), and an air ejection passage having an opening in the x direction can be provided on the side where one of the cover plates 52, 54 is eliminated. As a result, air is supplied toward the cover plate 52 along the opposing surfaces 34f, 36f (surfaces extending in the xz directions), which makes it possible to remove the parts s attached to the pair of opposing surfaces 34f, 36f. In addition, after the electrical characteristics of the component s are measured, the holder 32 can be retracted together with the retraction of the mover 36 (for example, retracted simultaneously). This state in which the holder 32 and the mover 36 are retracted can also be regarded as a disposal state. Furthermore, the mover position sensor 118 and the holder position sensor 120 are not essential. For example, the solenoid valve devices 69, 72 can be controlled by measurement using a timer 124. Furthermore, the air supply device is not essential, and the present invention can be embodied in various forms with various modifications and improvements based on the knowledge of those skilled in the art, in addition to the aspects described in the above embodiment. [Explanation of symbols]

[0030] 22: Inspection device 26: Garbage can 28: Disposal passage 29: Main body 29a: Opening 30: Base portion 30a: Opening 31: Fastening portion 32: Holder 34: Stator 36: Mover 34f, 36f: Opposing surface 40: Holder moving device 41: Mover moving device 42: LCR detection portion 44: Part placement portion 44c: V-groove 50: Cover portion 72: Air supply device 100: Control device 118: Mover position sensor 118: Holder position sensor 124: Timer Patentable invention

[0031] (1) An inspection device included in a mounting machine that picks up components supplied by a component supplying device and mounts them on a circuit board, A holding table capable of holding a component; a pair of probes that can approach and move away from each other and sandwich the component to measure the electrical characteristics of the component; a holder moving device that moves the holder; and a holder table movement control device that controls the holder table movement device, and the holder table movement control device includes a measurement control unit that moves the holder table away from the component by a set value or more from a clamped state in which the pair of measuring probes grip the component held on the holder table, to a measurement state in which the electrical characteristics of the component can be measured. The holding stage may be movable in a direction parallel to the direction in which the pair of probes approach or separate, or in a direction intersecting the direction. The set value may be a distance at which the influence of the holding stage is unlikely to affect the measurement of the electrical characteristics of the component, for example, when the holding stage is conductive. (2) The inspection device according to (1), wherein the support table is conductive. (3) The pair of probes includes a pair of opposing surfaces that face each other and are capable of coming into contact with the part, and the pair of opposing surfaces is brought close to each other to hold the part and is moved away from each other to release the part, The inspection apparatus according to claim 1 or 2, wherein the holding table moving device includes a disposal control unit that moves the holding table from the measurement state to a disposal state in which the holding table is not present below between the pair of opposing surfaces that are spaced apart from each other. (4) An inspection apparatus as described in (3), wherein the holder movement control device includes a preparation control unit that moves the holder from the disposal state downward between the pair of opposing surfaces that are spaced apart from each other, thereby bringing the holder into an initial state in which it can hold the part. (5) An inspection device according to any one of (1) to (4), wherein the mounting machine includes a waste passage connected to the inspection device, and a main body of the inspection device has an opening that can communicate with the waste passage. The position and size of the opening can be determined so that the opening is open downward between the pair of opposing surfaces at least in the disposal state. (6) An inspection apparatus as described in any one of (1) to (5), wherein the inspection apparatus includes an electrical characteristic acquisition device that supplies a current between the pair of probes and detects the current flowing between the pair of probes to acquire the electrical characteristics of the component, and the electrical characteristic acquisition device includes a delayed measurement unit that starts measuring the electrical characteristics of the component when a set time or more has elapsed since the component was placed on the holding table. The set time may be, for example, a static elimination time that is a time required to eliminate static electricity from a component. The static elimination time may be a time determined depending on the component, or may be a time that is set in advance regardless of the component. The time during which the component is placed on the support table may be the static elimination time. (7) The pair of probes includes a stator fixed to the body and a movable element movable relative to the stator, The inspection device according to any one of items (1) to (6), further comprising a mover moving device that moves the mover relative to the stator, and a mover movement control unit that controls the mover moving device to move the pair of measuring elements closer to or farther away from each other. (8) The inspection apparatus according to (7), further comprising a connecting mechanism that connects the mover and the support table so as to be movable relative to each other. For example, the mover may have an elongated shape extending parallel to the direction of movement of the mover, and the support table may be located in front of the tip of the mover, or may be located behind the tip of the mover. (9) An inspection device described in any one of (1) to (8), wherein the holding base has a V-groove, which is a groove having a V-shaped cross section, and the cross section of the tip of at least one of the pair of measuring probes forms a triangular shape corresponding to the V-groove.

[0032] (10) An inspection device included in a mounting machine that picks up components supplied by a component supplying device and mounts them on a circuit board, comprising: A holding table capable of holding a component; a pair of probes that can approach or move away from each other and sandwich the component to measure the electrical characteristics of the component; a relative movement device that moves the pair of measuring elements and the holding table relative to each other; and a relative movement control device that controls the relative movement device, and the relative movement control device includes a measurement control unit that moves the component and the holding table away from each other by a set value or more from a clamped state in which the pair of measuring probes grip the component held on the holding table, to a measurement state in which the electrical characteristics of the component can be measured. The inspection device described in this section may employ any of the technical features described in (1) to (9). The relative movement device can be (a) a device that fixes the holding table and moves the pair of gauge heads, or (b) a device that fixes one of the pair of gauge heads and moves the other of the pair of gauge heads and the holding table, etc. An example of (a) is a device in which, with a part held on the holding table clamped by the pair of gauge heads, the pair of gauge heads are moved relative to the holding table, and the part and the holding table are separated by a set value or more.

[0033] (11) A mounting apparatus is provided in the mounting machine, which picks up components supplied by a component supply device and mounts the components on a circuit board, the mounting apparatus comprising: (i) a support table capable of holding components; and (ii) a support table capable of moving toward and away from the components, An inspection method for inspecting electrical characteristics of a component using an inspection device including a pair of probes capable of measuring electrical characteristics of the component by sandwiching the component therebetween, a clamping step in which a pair of probes grips the part held on the holding table; and a measuring step of measuring electrical characteristics of the component by moving the holding table away from the component gripped by the pair of probes by a distance equal to or greater than a set value. The inspection method described in this section is carried out by the inspection device described in any one of (1) to (10). It can be carried out. (12) a disposal step of separating the pair of probes from each other and retracting the holding table from below between the opposing surfaces of the pair of probes that face each other after the measurement step is performed; and a preparation step of inserting the holding base downward between the opposing surfaces of the pair of probes to bring the holding base into an initial state in which it can hold the component. In the disposal step, the separation of the pair of probes and the withdrawal of the support table may be performed in that order or in parallel.

[0034] (13) An inspection device included in a mounting machine that picks up components supplied by a component supplying device and mounts them on a circuit board, comprising: a conductive support table for supporting a component; and an electrical characteristic acquisition device that grasps the component held on the holding table and acquires electrical characteristics of the component while the component is separated from the holding table. The inspection device described in this section adopts the technical features described in any one of (1) to (12). It can be used.

[0035] (14) The pair of probes are brought close to each other, so that the pair of opposing surfaces sandwich the component and measure the electrical characteristics of the component, and the pair of probes are moved away from each other, so that the component is released from the pair of opposing surfaces, The inspection device according to any one of items (1) to (13), further comprising an air supply device that supplies air to a supply target surface, which is at least one of the pair of opposing surfaces, when the pair of probes are separated from each other. The cases where the pair of probes are separated include the period during which they are separated from each other, a part or the entire period during which they are separated, when they start to separate, when they finish to separate, and the like. (15) The inspection device according to (14), wherein the air supply device includes an ionizer that ionizes the air and supplies the ionized air to the target surface. (16) The inspection device according to (14) or (15), wherein the air supply device includes an air passage having an opening facing the target surface. When the surface to be supplied is one of a pair of opposing surfaces, one opening is provided facing that one surface to be supplied, and when the surface to be supplied is both of the pair of opposing surfaces, two openings are provided facing each of them. (17) The inspection device according to (16), wherein the air passage includes an air ejection passage that is inclined downward as it approaches the target surface. (18) The inspection device according to (17), wherein the inclination angle of the air ejection passage is set to an angle at which the air impinges above a portion of the supply target surface that grips the component. (19) The pair of probes includes a stator fixed to the body and a movable element movable toward and away from the stator, The inspection device according to any one of items (14) to (18), wherein the air supply device includes a mover supply unit that supplies the air to the opposing surface of the mover, which is the supply target surface, when the mover is separated from the stator. (20) The inspection device includes a mover moving device that has a mover cylinder and moves the mover toward or away from the stator by operating the mover cylinder, The inspection device according to item (19), wherein the air supply device includes a drive source-linked supply unit that supplies air, which is forced out of the cylinder for the mover as the mover moves away from the stator, to the opposing surface of the mover. (21) The inspection device according to any one of (1) to (20), further comprising a cover portion that covers the gap between the pair of opposing surfaces when the opposing surfaces are spaced apart. The cover portion covers most of the area between the pair of opposing surfaces, but does not necessarily have to cover the entire area between the pair of opposing surfaces, and may cover the area with some gap. It is desirable that the cover portion covers the entire area between the pair of opposing surfaces from both sides at least for a period when the pair of opposing surfaces are separated from each other. (22) The inspection device according to (21), wherein the cover portion is attached to the holding base and covers most of the area between the pair of opposing surfaces from the side when the holding base is in the retracted end position.

Claims

[Claim 1] a component supplying device that supplies components to be mounted on a circuit board; an inspection device for measuring electrical characteristics of the components when the component supply device is newly installed or when the component supply device is replaced; a waste bin for containing the components whose electrical characteristics have been measured; A mounting machine equipped with the above.

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