JP6857767B2 - How to replace the picking device for scattered parts and the part holder - Google Patents

Description

The present invention relates to a picking device for scattered parts having a part support portion that supports a plurality of parts in a scattered state.

In a device having a component support portion that supports a plurality of components in a scattered state, the component holder holds the component supported by the component support portion and places the component in the component supply position in an aligned state. By placing it, parts are supplied. The following patent documents describe a technique for gripping scattered parts with a robot hand.

Japanese Unexamined Patent Publication No. 6-127698

According to the technique described in the above patent document, the scattered parts can be held to some extent by the holder. However, since the parts are scattered in various postures on the part support portion, there is a possibility that the parts cannot be properly held by the holder. The present invention has been made in view of such circumstances, and an object of the present invention is to hold parts in various postures by a holder.

In order to solve the above problems, the scattered component picking device according to the present invention includes a component support portion that supports a plurality of components in various postures and a plurality of types that hold the plurality of components one by one. A work head that selectively holds one type of holder among the holders, a moving device that moves the work head to an arbitrary position on the component support portion, and a control device are provided. , A picking device for holding scattered parts in contact with only the upper surface of the component support portion, wherein the control device holds the plurality of parts supported on the upper surface of the component support portion along a vertical axis. One type of holder held by the work head by acquiring the positions of the plurality of parts based on the imaging data imaged from above and operating the moving device based on the acquired position information of the plurality of parts. When holding one of the plurality of parts, it is determined whether or not the one type of holder interferes with something other than the one part, and if it is determined that the two interfere with each other. The moving device is operated to automatically replace one type of holder held by the work head with another type of holder capable of holding the one part. Further, the method for replacing a component holder according to the present invention includes a plurality of components scattered on a component support portion provided with a swivel device for turning the axis of the holder at an arbitrary angle and having side wall portions on both side edges. This is a method of exchanging a holder that automatically replaces a holder selectively provided by the picking device with another type of holder in the picking device for holding the above, and is a method of exchanging a plurality of holders scattered on the component support portion. The picking device selectively picks one component among a plurality of components scattered on the component support portion based on the imaging data acquisition process of capturing the component from above and acquiring the imaging data. Judgment step of determining whether or not scattered parts other than the one part or the side wall portion and the holder additionally provided by the picking device interfere with each other when the holding tool is provided for the picking device. And, when it is determined that the picking device interferes in the determination step, the holding tool replacement step of automatically replacing the holder optionally provided by the picking device with another type of holder is included. And.

In the interspersed component picking device or the like described in the present invention, when one type of holder holds one part of a plurality of parts, the one type of holder is other than the one part. It is determined whether or not it interferes with, and if it is determined that it interferes, the one type of holder is automatically replaced with another type of holder. This makes it possible to hold parts in various postures by the holder.

It is a perspective view which shows the component mounting machine. It is a perspective view which shows the component mounting apparatus of a component mounting machine. It is a perspective view which shows the loose parts supply device. It is a perspective view which shows the component supply unit. It is a perspective view which shows the parts supply unit in the state which the parts collection container is raised to the raised end position. It is a perspective view which shows the component holding head. It is a figure which shows the chuck. It is a figure which shows the part receiving member in the state which the lead part is housed. It is a block diagram which shows the control device of a component mounting machine. It is a perspective view which shows the component scattered state realization apparatus. It is a figure which shows the component support member in the state which a plurality of lead components are scattered. It is a figure which shows the component support member in the state which a plurality of lead components are scattered. It is a figure which shows the chuck which holds a lead part. It is a figure which shows the contrast table of a lead part conceptually. It is a figure which shows the component support member in the state which a plurality of electronic circuit components are scattered. It is a figure which conceptually shows the contrast table of an electronic circuit component. It is a perspective view which shows the component scattered state realization apparatus and component return apparatus.

Hereinafter, examples of the present invention will be described in detail as embodiments for carrying out the present invention with reference to the drawings.

<Configuration of component mounting machine>
FIG. 1 shows a component mounting machine 10. The component mounting machine 10 is a device for executing component mounting work on the circuit base material 12. The component mounting machine 10 includes an apparatus main body 20, a base material transfer holding device 22, a component mounting device 24, an image pickup device 26, 28, a component supply device 30, a loose component supply device 32, and a control device (see FIG. 9) 34. There is. Examples of the circuit board 12 include a circuit board, a base material having a three-dimensional structure, and the like, and examples of the circuit board include a printed wiring board and a printed circuit board.

The apparatus main body 20 is composed of a frame portion 40 and a beam portion 42 mounted on the frame portion 40. The base material transfer holding device 22 is arranged at the center of the frame portion 40 in the front-rear direction, and has a transfer device 50 and a clamp device 52. The transport device 50 is a device that transports the circuit base material 12, and the clamp device 52 is a device that holds the circuit base material 12. As a result, the base material transport / holding device 22 transports the circuit base material 12 and holds the circuit base material 12 fixedly at a predetermined position. In the following description, the transport direction of the circuit base material 12 is referred to as the X direction, the horizontal direction perpendicular to that direction is referred to as the Y direction, and the vertical direction is referred to as the Z direction. That is, the width direction of the component mounting machine 10 is the X direction, and the front-rear direction is the Y direction.

The component mounting device 24 is arranged in the beam unit 42, and has two work heads 60 and 62 and a work head moving device 64. Each work head 60, 62 has a component holder (see FIG. 2) 66 such as a chuck and a suction nozzle, and the component holder 66 holds the component. Further, 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. Then, the two work heads 60 and 62 are integrally moved to an arbitrary position on the frame portion 40 by the X-direction moving device 68 and the Y-direction moving device 70. Further, as shown in FIG. 2, the work heads 60 and 62 are detachably attached to the sliders 74 and 76, and the Z-direction moving device 72 individually moves the sliders 74 and 76 in the vertical direction. That is, the work heads 60 and 62 are individually moved in the vertical direction by the Z-direction moving device 72.

The image pickup apparatus 26 is attached to the slider 74 in a state of facing downward, and is moved together with the work head 60 in the X direction, the Y direction, and the Z direction. As a result, the image pickup apparatus 26 images an arbitrary position on the frame portion 40. As shown in FIG. 1, the image pickup apparatus 28 is arranged between the substrate transport holding apparatus 22 on the frame portion 40 and the component supply apparatus 30 in a state of facing upward. As a result, the image pickup apparatus 28 images the parts held by the part holders 66 of the work heads 60 and 62.

The component supply device 30 is arranged at one end of the frame portion 40 in the front-rear direction. The parts supply device 30 includes a tray-type parts supply device 78 and a feeder-type parts supply device (not shown). The tray-type component supply device 78 is a device that supplies components in a state of being placed on the tray. The feeder type parts supply device is a device that supplies parts by a tape feeder (not shown) and a stick feeder (not shown).

The loose component supply device 32 is arranged at the other end of the frame portion 40 in the front-rear direction. The loose parts supply device 32 is a device that aligns a plurality of parts that are scattered apart and supplies the parts in the aligned state. That is, it is a device that aligns a plurality of parts in an arbitrary posture in a predetermined posture and supplies the parts in the predetermined posture. The configuration of the component supply device 32 will be described in detail below. Examples of the parts supplied by the parts supply device 30 and the loose parts supply device 32 include electronic circuit parts, solar cell components, power module components, and the like. Further, electronic circuit parts include parts having reeds, parts having no reeds, and the like.

As shown in FIG. 3, the loose parts supply device 32 includes a main body 80, a parts supply unit 82, an image pickup device 84, and a parts delivery device 86.

(A) Parts supply unit The parts supply unit 82 includes a parts supply device 88, a parts scattered state realizing device 90, and a parts returning device 92, and includes the parts supply device 88, the parts scattered state realizing device 90, and the parts returning device 92. Is integrally configured. The parts supply unit 82 is detachably assembled to the base 96 of the main body 80, and in the loose parts supply device 32, five parts supply units 82 are arranged in a row in the X direction.

(I) Parts feeder The parts feeder 88 includes a parts storage device 100, a housing 102, and a grip 104, as shown in FIG. The component storage device 100 generally has a rectangular parallelepiped shape, and the upper surface and the front surface are open. The bottom surface of the parts storage device 100 has an inclined surface 116, which is inclined toward the front surface of the parts storage device 100 to open.

The housing 102 has a pair of side walls 120, and a component accommodator 100 is oscillatedly held between the pair of side walls 120. Further, between the pair of side walls 120, the inclined plate 152 is fixedly arranged so as to be located in front of the lower end portion of the front surface of the component storage device 100. The inclined plate 152 is inclined so as to descend toward the front.

The grip 104 is arranged at the rear end of the housing 102, and is composed of a fixed grip member 170 and a movable grip member 172. The movable gripping member 172 is accessible and separated from the fixed gripping member 170. Then, the movable grip member 172 is connected to the rear surface of the component storage device 100 by a connecting arm (not shown). As a result, when the grip 104 is gripped, the movable grip member 172 approaches and separates from the fixed grip member 170, and the component accommodator 100 swings between the pair of side walls 120.

Further, the component feeder 88 is arranged between a pair of side frame portions 190 assembled to the base 96, and is detachable from the base 96. A lock mechanism (not shown) is provided at the lower end of the movable grip member 172 of the grip 104, and the lock mechanism is released when the grip 104 is gripped. That is, the component feeder 88 is removed from between the pair of side frame portions 190 by lifting the component feeder 88 while the operator holds the grip 104 of the component feeder 88.

(Ii) Parts scattered state realizing device The parts scattered state realizing device 90 includes a parts supporting member 220, a parts supporting member moving device 222, and a feeder vibrating device 224. The component support member 220 generally has a longitudinal plate shape, and is arranged so as to extend forward from below the inclined plate 152 of the component feeder 88. Further, side wall portions 228 are formed on both side edges of the component support member 220 in the longitudinal direction.

The component support member moving device 222 is a device that moves the component support member 220 in the front-rear direction by driving an electromagnetic motor (see FIG. 9) 223. As a result, the component support member 220 moves in the front-rear direction with the upper surface of the component support member 220 horizontal, slightly below the lower end of the inclined plate 152 of the component feeder 88.

The feeder vibrating device 224 includes a cam member 240, a cam follower 242, and a stopper 244. The cam member 240 has a plate shape and is fixed to the outer side surface of the side wall portion 228 so as to extend in the front-rear direction. A plurality of teeth 245 are formed at the upper end portion of the cam member 240 at equal intervals in the front-rear direction. The cam follower 242 includes a lever 252 and a roller 254. The lever 252 is arranged at the lower end of the side wall 120 of the component feeder 88, and can swing around the upper end. The roller 254 is rotatably held at the lower end of the lever 252. The lever 252 is urged in the forward direction by the elastic force of the coil spring (not shown). Further, the stopper 244 is provided on the side wall 120 in a protruding shape, and the lever 252 urged by the elastic force of the coil spring is in contact with the stopper 244.

(Iii) Parts return device The parts return device 92 includes a container lifting device 260 and a parts recovery container 262, as shown in FIG. The container elevating device 260 includes an air cylinder 266 and an elevating member 268, and the elevating member 268 moves up and down by the operation of the air cylinder 266. Further, the air cylinder 266 is fixed to the front end of the component support member 220. As a result, the air cylinder 266 moves in the front-rear direction together with the component support member 220 by the operation of the component support member moving device 222.

The parts collection container 262 is arranged on the upper surface of the elevating member 268, and moves in the vertical direction by the operation of the air cylinder 266. The parts collection container 262 has a box shape with an open upper surface, and is rotatably held on the upper surface of the elevating member 268. As shown in FIG. 4, a protruding pin 272 is arranged at the rear end of the parts collection container 262. The protruding pin 272 projects outward on the side of the parts collection container 262. Further, the engagement block 274 is fixed inside the upper end portion on the front side of the side frame portion 190. Then, as shown in FIG. 5, when the parts collection container 262 rises to the ascending end position by the operation of the air cylinder 266, the protruding pin 272 engages with the engaging block 274. As a result, the parts collection container 262 rotates.

(B) Imaging device The imaging device 84 includes a camera 290 and a camera moving device 292, as shown in FIG. The camera moving device 292 includes a guide rail 296 and a slider 298. The guide rail 296 is fixed to the main body 80 above the component feeder 88 so as to extend in the width direction of the loose component supply device 32. The slider 298 is slidably attached to the guide rail 296, and slides to an arbitrary position by the operation of the electromagnetic motor (see FIG. 9) 299. Further, the camera 290 is attached to the slider 298 in a state of facing downward.

(C) Parts delivery device As shown in FIG. 3, the parts delivery device 86 includes a parts holding head moving device 300, a parts holding head 302, and two shuttle devices 304.

The component holding head moving device 300 includes an X-direction moving device 310, a Y-direction moving device 312, and a Z-direction moving device 314. The Y-direction moving device 312 has a Y slider 316 arranged above the component supply unit 82 so as to extend in the X direction, and the Y slider 316 is driven by an electromagnetic motor (see FIG. 9) 319. , Move to any position in the Y direction. The X-direction moving device 310 has an X-slider 320 arranged on the side surface of the Y-slider 316, and the X-slider 320 is moved to an arbitrary position in the X-direction by driving an electromagnetic motor (see FIG. 9) 321. Moving. The Z direction moving device 314 has a Z slider 322 arranged on the side surface of the X slider 320, and the Z slider 322 is moved to an arbitrary position in the Z direction by driving an electromagnetic motor (see FIG. 9) 323. Moving.

As shown in FIG. 6, the component holding head 302 includes a head main body 330, a component holder 332, a holder swivel device 334, and a holder rotating device 335. The head body 330 is integrally formed with the Z slider 322. The component holder 332 holds the component and is detachably attached to the lower end of the holder 340. The component holder 332 includes a suction nozzle 332a and a chuck 332b. The suction nozzle 332a has a suction pipe 336 at the lower end thereof, and sucks and holds the component at the tip of the suction pipe 336. Further, as shown in FIG. 7, the chuck 332b includes a main body portion 337 and a pair of claw portions 338. The pair of claw portions 338 are arranged so as to extend downward from the lower surface of the main body portion 337, and slide so as to be close to and separated from each other. As a result, the chuck 332b brings the pair of claws 338 closer to each other to hold the parts by the pair of claws 338, and separates the pair of claws 338 from each other to separate the pair of claws 338. Remove the part from between. Further, the holder 340 is bendable on the support shaft 344, and the holder 340 is bent 90 degrees upward by the operation of the holder swivel device 334. As a result, the component holder 332 mounted on the lower end of the holder 340 turns 90 degrees and is positioned at the turning position. That is, the component holder 332 is swiveled between the non-swivel position and the swivel position by the operation of the holder swivel device 334. The holder rotating device 335 also rotates the component holder 332 around its axis.

Further, as shown in FIG. 3, a holder station 350 is arranged on the upper surface of the base 96. A plurality of types of suction nozzles 332a and a plurality of types of chucks 332b are housed in the holder station 350, and the suction nozzles 332a or chuck 332b mounted on the holder 340 of the component holding head 302 and the holder station 350. The suction nozzle 332a or the chuck 332b housed in the holder is replaced by the operation of the holder station 350 and the component holding head moving device 300.

Further, as shown in FIG. 3, each of the two shuttle devices 304 includes the component carrier 388 and the component carrier moving device 390, is arranged laterally on the front side of the component supply unit 82, and is fixed to the main body 80. Has been done. Five component receiving members 392 are mounted on the component carrier 388 in a line in the horizontal direction, and the components are placed on each component receiving member 392.

Specifically, as shown in FIG. 8, the component supplied by the loose component supply device 32 is an electronic circuit component having a lead (hereinafter, may be abbreviated as “lead component”) 410, and the lead component 410 is a lead component 410. It is composed of a block-shaped component body 412 and two leads 414 protruding from the bottom surface of the component body 412. Further, the component receiving recess 416 is formed in the component receiving member 392. The component receiving recess 416 is a stepped recess, and is composed of a main body receiving recess 418 opening on the upper surface of the component receiving member 392 and a lead receiving recess 420 opening on the bottom surface of the main body receiving recess 418. There is. Then, the lead component 410 is inserted into the component receiving recess 416 with the lead 414 facing downward. As a result, the reed 414 is inserted into the lead receiving recess 420, and the lead component 410 is placed inside the component receiving recess 416 with the component main body 412 inserted into the main body receiving recess 418.

Further, as shown in FIG. 3, the component carrier moving device 390 is a plate-shaped longitudinal member, and is arranged on the front side of the component supply unit 82 so as to extend in the front-rear direction. A component carrier 388 is slidably arranged in the front-rear direction on the upper surface of the component carrier moving device 390, and is slid to an arbitrary position in the front-rear direction by driving an electromagnetic motor (see FIG. 9) 430. When the component carrier 388 slides in the direction approaching the component supply unit 82, it slides to the component receiving position located within the moving range of the component holding head 302 by the component holding head moving device 300. On the other hand, when the component carrier 388 slides away from the component supply unit 82, it slides to the component supply position located within the movement range of the work heads 60 and 62 by the work head moving device 64.

Further, as shown in FIG. 9, the control device 34 includes a central control device 450, a plurality of individual control devices (only one is shown in the figure) 452, an image processing device 454, and a storage device 456. Including. The integrated control device 450 is mainly composed of a computer, and is connected to a base material transport holding device 22, a component mounting device 24, an imaging device 26, an imaging device 28, a component supply device 30, and a loose component supply device 32. ing. As a result, the integrated control device 450 collectively controls the base material transporting and holding device 22, the component mounting device 24, the imaging device 26, the imaging device 28, the component supply device 30, and the loose component supply device 32. The plurality of individual control devices 452 are mainly composed of a computer, and are included in the base material transport holding device 22, the component mounting device 24, the imaging device 26, the imaging device 28, the component supply device 30, and the loose component supply device 32. Correspondingly provided (in the figure, only the individual control device 452 corresponding to the loose component supply device 32 is shown). The individual control device 452 of the loose parts supply device 32 is connected to the parts scattered state realization device 90, the parts return device 92, the camera moving device 292, the parts holding head moving device 300, the parts holding head 302, and the shuttle device 304. As a result, the individual control device 452 of the loose parts supply device 32 controls the parts scattered state realization device 90, the parts return device 92, the camera moving device 292, the parts holding head moving device 300, the parts holding head 302, and the shuttle device 304. .. Further, the image processing device 454 is connected to the image pickup device 84 and processes the image pickup data captured by the image pickup device 84. The image processing device 454 is connected to the individual control device 452 of the loose component supply device 32. As a result, the individual control device 452 of the loose component supply device 32 acquires the image pickup data captured by the image pickup device 84. Further, the storage device 456 stores various data and is connected to the individual control device 452. As a result, the individual control device 452 acquires various data from the storage device 456.

<Operation of component mounting machine>
With the above-described configuration, the component mounting machine 10 performs component mounting work on the circuit base material 12 held by the base material transfer holding device 22. Specifically, the circuit base material 12 is conveyed to a working position, and is fixedly held by the clamp device 52 at that position. Next, the image pickup apparatus 26 moves above the circuit base material 12 and images the circuit base material 12. As a result, information regarding an error in the holding position of the circuit base material 12 can be obtained. Further, the parts supply device 30 or the loose parts supply device 32 supplies parts at a predetermined supply position. The supply of parts by the loose parts supply device 32 will be described in detail later. Then, one of the work heads 60 and 62 moves above the supply position of the component and holds the component by the component holder 66. Subsequently, the work heads 60 and 62 holding the parts move above the image pickup device 28, and the image pickup device 28 images the parts held by the part holder 66. This provides information about the error in the holding position of the part. Then, the work heads 60 and 62 holding the parts move above the circuit base material 12, and correct the holding position error of the circuit base material 12, the holding position error of the parts, and the like. , Mounted on the circuit substrate 12.

<Operation of loose parts supply device>
(A) Supply of lead parts by the loose parts supply device In the loose parts supply device 32, the lead parts 410 are thrown into the parts storage device 100 of the parts feeder 88 by an operator, and the thrown lead parts 410 are used as parts. By operating the supply unit 82 and the component delivery device 86, the components are supplied in a state of being mounted on the component receiving member 392 of the component carrier 388. Specifically, the operator inserts the lead component 410 through the opening on the upper surface of the component storage device 100 of the component feeder 88. At this time, the component support member 220 is moved below the component feeder 88 by the operation of the component support member moving device 222, and the component recovery container 262 is located in front of the component feeder 88.

The lead component 410 inserted through the opening on the upper surface of the component storage device 100 falls onto the inclined surface 116 of the component storage device 100 and spreads on the inclined surface 116. At this time, when the lead component 410 that has fallen on the inclined surface 116 rolls down beyond the inclined plate 152, it is housed in the component collection container 262 located in front of the component feeder 88.

After the lead component 410 is put into the component storage device 100, the component support member 220 is moved from the lower side to the front of the component feeder 88 by the operation of the component support member moving device 222. At this time, when the cam member 240 reaches the cam follower 242, as shown in FIG. 10, the roller 254 of the cam follower 242 gets over the teeth 245 of the cam member 240. The lever 252 of the cam follower 242 is urged in the forward direction by the elastic force of the coil spring, and the forward urging of the lever 252 is regulated by the stopper 244. Therefore, when the component support member 220 moves forward, the roller 254 and the teeth 245 are maintained in a meshed state, the lever 252 does not rotate forward, and the roller 254 has the teeth 245. Overcome. At this time, the parts feeder 88 moves up and down by getting over the teeth 245 of the roller 254. That is, with the roller 254 meshing with the teeth 245, the component support member 220 moves forward, so that the roller 254 gets over the plurality of teeth 245 and the component feeder 88 vibrates continuously in the vertical direction. ..

The lead component 410 extending on the inclined surface 116 of the component accommodator 100 moves forward due to the vibration of the component feeder 88 and the inclination of the inclined surface 116, and moves forward through the inclined plate 152 to the upper surface of the component support member 220. Is discharged to. At this time, the side wall portion 228 of the component support member 220 prevents the lead component 410 from falling from the component support member 220. Then, as the component support member 220 moves forward, the lead components 410 are scattered on the upper surface of the component support member 220.

When the lead parts 410 are scattered on the parts support member 220 from the inside of the parts storage device 100, the lead parts 410 are placed on the parts support member 220 in various postures as shown in FIGS. 11 and 12. Scattered in. Specifically, the component body 412 of the lead component 410 is generally rectangular parallelepiped and has six surfaces. The six surfaces are a bottom surface 500 on which the lead 414 extends, a top surface 502 facing the bottom surface 500, and four side surfaces 504,506,508,510. Then, of the four side surfaces 504,506,508,510, the side surface (hereinafter, may be referred to as "first side surface") 504 and the side surface (hereinafter, may be referred to as "second side surface"). The side surface (hereinafter, may be referred to as "third side surface") 508 and the side surface (hereinafter, may be referred to as "fourth side surface") 510 are opposed to each other. The surface areas of the first side surface 504 and the second side surface 506 are larger than the surface areas of the third side surface 508 and the fourth side surface 510. Further, the lead 414 is bent in an L shape, and is divided into a base end portion 512 extending from the component main body 412 and a bent portion 514 bent at a right angle toward the side of the first side surface 504.

When the lead parts 410 having such a shape are scattered on the part support member 220, the lead parts 410 are supported on the part support member 220 in substantially two postures. Specifically, the posture in which the first side surface 504 is directed upward (hereinafter, may be referred to as "first posture") and the posture in which the second side surface 506 is directed upward (hereinafter, described as "second posture"). The lead component 410 is supported on the component support member 220 in one of the two attitudes (may be). This is because the surface area of the upper surface 502, the third side surface 508, and the fourth side surface 510 is small, and the lead 414 is arranged on the bottom surface 500. In the lead component 410 in the first posture, the first side surface 504 is in a state of facing directly upward, but in the lead component 410 in the second posture, the second side surface 506 is in a posture of facing diagonally upward. This is because the lead 414 is bent toward the first side surface 504. Specifically, the bent portion 514 of the lead 414 is bent beyond the first side surface 504, and in the lead component 410 in the second posture, at the end of the first side surface 504 on the upper surface 502 side and the tip of the bent portion 514. , It is in contact with the upper surface of the component support member 220. Therefore, the first side surface 504 is in an inclined state, and the second side surface 506 facing the first side surface 504 faces diagonally upward.

In the lead parts 410 scattered in such a posture, the lead parts 410 may not be properly held by one type of part holder 332. Specifically, for example, when a chuck is used as the component holder 332, the lead component is sandwiched between the third side surface 508 and the fourth side surface 510 of the lead component 410 by a pair of claws of the chuck. The 410 can be gripped. Although the lead component 410 in the second posture is inclined, the third side surface 508 and the fourth side surface 510 are perpendicular to the upper surface of the component support member 220, so that the chuck 332b is as shown in FIG. It is possible to sandwich the third side surface 508 and the fourth side surface 510 of the lead component 410 by the pair of claw portions 338 of the above.

However, as shown in FIG. 11, the lead component 410a and the lead component 410b are scattered at close positions, and the gap between the fourth side surface 510 of the lead component 410a and the fourth side surface 510 of the lead component 410b is very large. There are few. Therefore, the chuck claw cannot be inserted into the gap between the fourth side surface 510 of the lead component 410a and the fourth side surface 510 of the lead component 410b, and the lead component 410a and the lead component 410b are gripped by the chuck. Can't.

Further, when the suction nozzle is adopted as the component holder 332, the lead component 410 can be suction-held on the first side surface 504 or the second side surface 506 facing upward of the lead component 410. Although the second side surface 506 of the lead component 410 in the second posture is tilted, the holder 340 is swiveled according to the tilt angle of the second side surface 506 by the holder swivel device 334, as shown in FIG. In addition, the suction nozzle as the component holder 332 is perpendicular to the second side surface 506. As a result, the second side surface 506 can be appropriately sucked and held by the suction nozzle. However, the lead parts 410d are scattered at positions close to the side wall portion 228. Therefore, when the component holder 332 is tilted to attract and hold the second side surface 506 of the lead component 410d, the component holder 332 comes into contact with the side wall portion 228, and the lead component 410d is attracted and held by the suction nozzle. I can't.

As described above, the lead parts 410 scattered in various states may not be properly held by one type of part holder 332. Therefore, in the loose component supply device 32, two types of holders, a suction nozzle and a chuck, are set as the component holders 332 for holding the lead parts 410. Specifically, as shown in FIG. 14, the storage device 456 of the loose component supply device 32 contains a type of component, a component holder 332 capable of holding the component, and a component holder 332 to hold the component. It is associated with the face and stored as a comparison table. In this comparison table, the suction nozzle A and the chuck A are set for the lead component 410. Then, in the suction nozzle, the first side surface 504 or the second side surface 506 is set as the holding surface, and in the chuck, the third side surface 508 and the fourth side surface 510 are set as the holding surface.

The holder station 350 contains a plurality of types of suction nozzles 332a and a plurality of types of chucks 332b. Among the plurality of types of suction nozzles 332a, a predetermined type of suction nozzle A and a plurality of types of suction nozzles A are housed. A predetermined type of chuck A among the types of chucks 332b is stored in the comparison table. Further, for parts of a type different from the lead part 410, among a plurality of types of suction nozzles 332a and chuck 332b, depending on the shape, area, etc. of the suction surface by the suction nozzle 332a and the gripping surface by the chuck 332b of the parts. Multiple types are stored in the comparison table. In some cases, one type of suction nozzle 332a or chuck 332b is set for a plurality of types of parts, and a plurality of types are set for the suction surface or the gripping surface of a predetermined part. The suction nozzle 332a or the chuck 332b of the above may be set.

Then, when the lead components 410 are scattered on the component support member 220, the camera 290 of the image pickup device 84 moves above the component support member 220 by the operation of the camera moving device 292, and images the lead component 410. .. Then, based on the imaging data captured by the camera 290 and the comparison table, a component holder capable of holding the lead component 410 (hereinafter, may be referred to as a “target component holder”) is provided for each lead component. Is specified in. Specifically, first, based on the imaging data, it is specified that the components scattered on the component support member 220 are the lead components 410. Then, based on the comparison table, the suction nozzle A and the chuck A are specified as the target component holders of the lead component 410. Next, since the lead component 410a cannot be held by the chuck A due to the presence of the lead component 410b, the suction nozzle A is specified as the target component holder. Further, since the lead component 410b cannot be held by the chuck A due to the presence of the lead component 410a, the suction nozzle A is specified as the target component holder. Further, since there is nothing that hinders the holding of the lead component 410c, the suction nozzle A and the chuck A are specified as the target component holders. Further, since the lead component 410d cannot be held by the suction nozzle A due to the presence of the side wall portion 228, the chuck A is specified as the target component holder.

In this way, when the target component holder is specified for each of the plurality of lead components on the component support member 220, the lead component 410 is held by the specified target component holder. Specifically, for example, when the suction nozzle A is mounted on the holder 340 of the component holding head 302, any one of the lead component 410a, the lead component 410b, and the lead component 410c has the suction nozzle 410. Adsorbed and held by A. Further, for example, when the chuck A is mounted on the holder 340 of the component holding head 302, the lead component 410 of either the lead component 410c or the lead component 410d is gripped by the chuck A. In the following description, a case where the chuck A of the plurality of types of suction nozzles 332a and the chuck 332b is mounted on the component holding head 302 will be described.

The component holding head 302 to which the chuck A is mounted is moved above either the lead component 410c or the lead component 410d, and the lead component 410c or the lead component 410d is gripped by the chuck A. Then, the component holding head 302 is moved above the component carrier 388. At this time, the component carrier 388 is moved to the component receiving position by the operation of the component carrier moving device 390. Further, when the component holding head 302 moves above the component carrier 388, the component holder 332 is swiveled to the swivel position. Further, the component holder 332 is rotated by the operation of the holder rotating device 335 so that the lead 414 of the lead component 410 held by the component holder 332 in the turning position faces downward in the vertical direction.

When the component holding head 302 moves above the component carrier 388, the lead component 410 with the lead 414 facing downward in the vertical direction is inserted into the component receiving member 392. As a result, as shown in FIG. 8, the lead component 410 is placed on the component receiving member 392 with the lead 414 facing downward in the vertical direction.

Then, when the lead component 410 is placed on the component receiving member 392, the component carrier 388 moves to the component supply position by the operation of the component carrier moving device 390. Since the component carrier 388 that has moved to the component supply position is located in the movement range of the work heads 60 and 62, the loose component supply device 32 supplies the lead component 410 at this position. As described above, in the loose component supply device 32, the lead component 410 is supplied with the lead 414 facing downward and the upper surface 502 facing the bottom surface 500 to which the lead 414 is connected facing upward. Therefore, the component holder 66 of the work heads 60 and 62 can appropriately hold the lead component 410.

Further, while the component holding head 302 moves toward the component carrier 388 and the lead component 410 is placed on the component receiving member 392, the lead components 410 scattered on the component support member 220 are scattered. , The camera 290 again takes an image, and based on the imaged data and the comparison table, the target component holder is specified again for each lead component. That is, every time the lead component 410 is held by the component holder 332, the lead component 410 is imaged by the camera 290, and the target component holder is specified for each lead component based on the imaged data and the comparison table. Will be done. This is because when the lead component 410 is held by the component holder 332, the position of the lead component 410 on the component support member 220 may be displaced. Then, the component holding head 302 is returned above the component support member 220 after the lead component 410 is placed on the component receiving member 392 of the component carrier 388.

When the component holding head 302 is returned above the component support member 220, if there is a lead component 410 in which the chuck A is specified as the target component holder, the lead component 410 is gripped by the chuck A. Then, as described above, the gripped lead component 410 is placed on the component receiving member 392. On the other hand, when there is no lead component 410 in which the chuck A is specified as the target component holder, the component holding head 302 is moved above the holder station 350, and the chuck A mounted on the holder 340 holds the chuck A. It is housed in the tool station 350. Then, the suction nozzle A is attached to the holder 340 from among the plurality of types of suction nozzles 332a and chuck 332b housed in the holder station 350. Then, the component holding head 302 is moved above the component support member 220.

When the component holding head 302 is moved above the component supporting member 220, the lead component 410 whose suction nozzle A is specified as the target component holder is suction-held by the suction nozzle A. Then, as described above, the gripped lead component 410 is placed on the component receiving member 392. As described above, in the loose component supply device 32, when the lead component 410 is held by one of the suction nozzle A and the chuck A and there is no lead component 410 that can be held by one of the suction nozzles A on the component support member 220, the suction nozzle The lead component 410 is held by the other of A and the chuck A. As a result, many lead parts 410 scattered on the part support member 220 can be held by the part holder 332.

Further, in the above description, every time the lead component 410 on the component support member 220 is held by the component holder 332, the lead component 410 of the component support member 220 is imaged by the camera 290, but by one imaging. It is also possible to sequentially hold the plurality of lead parts 410 by the part holder 332. Specifically, when the target component holder is specified for each lead component based on the imaging data and the comparison table, the position information for each lead component and the information regarding the target component holder for each lead component (hereinafter, "" "Position / holder information") is stored in the storage device 456.

Then, when the lead component 410 is held by the chuck A mounted on the component holding head 302 or the suction nozzle A, the position / holder information stored in the storage device 456 is referred to. As a result, the position of the lead component 410 on the component support member 220 is specified, and the target component holder corresponding to the lead component 410 is specified. Therefore, the lead component 410 whose position is specified based on the position / holder information is held by the component holder 332 specified according to the lead component 410. That is, the lead component 410 is held by the component holder 332 mounted on the component holding head 302, and after the held component is placed on the component receiving member 392, the image is not taken by the camera 290. The next lead component 410 is held by the component holder 332 mounted on the component holding head 302 based on the position / holder information stored in the storage device 456. Further, even after the component holder 332 mounted on the component holding head 302 is replaced with the component holder 332 housed in the holder station 350, the image is not taken by the camera 290 and is stored in the storage device 456. The next lead component 410 is held by the replaced component holder 332 based on the position / holder information provided. This makes it possible to reduce the number of times of imaging by the camera 290.

Further, in the loose component supply device 32, it is possible to supply an electronic circuit component without a lead 414 in addition to the lead component 410. Hereinafter, a method of supplying the electronic circuit component 520 having the shape shown in FIG. 15 will be described. The electronic circuit component 520 is generally rectangular parallelepiped and has six surfaces. The six surfaces are an upper surface 522 having a large surface area, a lower surface 524 facing the upper surface 522, and four side surfaces 526, 528, 530, 532. Then, of the four side surfaces 526, 528, 530, and 532, the side surface (hereinafter, may be referred to as "first side surface") 526 and the side surface (hereinafter, may be referred to as "second side surface"). 528 is opposed to each other, and the side surface (hereinafter, may be referred to as "third side surface") 530 and the side surface (hereinafter, may be referred to as "fourth side surface") 532 are opposed to each other. The first side surface 526 and the second side surface 528 are continuous with the long sides of the upper surface 522 and the bottom surface 524, and the third side surface 530 and the fourth side surface 532 are continuous with the short sides of the upper surface 522 and the bottom surface 524.

When the electronic circuit component 520 having such a shape is scattered on the component support member 220 according to the same procedure as the lead component 410, the electronic circuit component 520 has a posture in which the upper surface 522 or the bottom surface 524 faces upward. Is supported on the component support member 220. This is because the surface areas other than the upper surface 522 and the bottom surface 524, that is, the four side surfaces 526, 528, 530, and 532 are small.

The comparison table shown in FIG. 16 is stored in the storage device 456 for the electronic circuit components 520 scattered in such a posture. In the comparison table for the electronic circuit component 520, the chuck B and the chuck C are set as the target component holders from among a plurality of types of suction nozzles 332a and chucks 332b. The pair of claws of the chuck B are arranged in a relatively close state, and the pair of claws of the chuck C are arranged in a relatively separated state. Therefore, in the chuck B, the first side surface 526 and the second side surface 528 are set as the holding surfaces, and in the chuck C, the third side surface 530 and the fourth side surface 532 are set as the holding surfaces.

When the target component holder is specified for each of the electronic circuit components 520 scattered on the component support member 220 by using the comparison table set in this way, the camera 290 is used as in the case of the lead component 410. The component support member 220 is imaged. Thereby, based on the image pickup data, it is specified that the components scattered on the component support member 220 are the electronic circuit components 520. Then, based on the comparison table, the chuck B and the chuck C are specified as the target component holders of the electronic circuit component 520. Next, since the electronic circuit component 520a cannot be held by the chuck C due to the presence of the electronic circuit component 520b, the chuck B is specified as the target component holder. Further, since the electronic circuit component 520b cannot be held by the chuck C due to the presence of the electronic circuit component 520a, the chuck B is specified as the target component holder. Further, since there is no obstacle to holding the electronic circuit component 520c, the chuck B and the chuck C are specified as the target component holders. Further, since the electronic circuit component 520d cannot be held by the chuck B due to the presence of the electronic circuit component 520e, the chuck C is specified as the target component holder. Further, since the electronic circuit component 520e cannot be held by the chuck B due to the presence of the electronic circuit component 520d, the chuck C is specified as the target component holder. Further, since the chuck C cannot hold the electronic circuit component 520f due to the presence of the side wall portion 228, the chuck B is specified as the target component holder.

In this way, when the target component holder is specified for each of the plurality of electronic circuit components 520 on the component support member 220, the electronic circuit component 520 is held by the specified target component holder. The method of holding the electronic circuit component 520 by the target component holder and the method of mounting the held electronic circuit component 520 on the component receiving member 392 are the holding method of the lead component 410 and the component receiving of the lead component 410. Since it is the same as the mounting method on the member 392, the description thereof will be omitted. Even when the electronic circuit component 520 is held, the component support member 220 is imaged each time the electronic circuit component 520 is held, as in the lead component 410, based on the imaged data and the comparison table. , The target part holder may be specified, or the target part holder may be specified based on the position / holder information stored in the storage device 456.

(B) Recovery of Parts Further, in the loose parts supply device 32, it is possible to recover the lead parts 410 or the electronic circuit parts 520 scattered on the parts support member 220. Specifically, the component support member 220 is moved downward of the component feeder 88 by the operation of the component support member moving device 222. At this time, as shown in FIG. 17, when the lead parts 410 are scattered on the part support member 220, the lead parts 410 are blocked by the inclined plate 152 of the part feeder 88 to support the parts. The lead component 410 on the member 220 is scraped off inside the component collection container 262.

Next, the parts collection container 262 is raised by the operation of the container elevating device 260. At this time, as shown in FIG. 5, the protruding pin 272 arranged in the parts collection container 262 engages with the engaging block 274 arranged inside the side frame portion 190. As a result, the parts collection container 262 rotates, and the lead parts 410 in the parts collection container 262 are returned to the inside of the parts storage container 100.

In the loose component supply device 32, as described above, the lead component 410 is picked up from the component support member 220 by the chuck or two types of component holders 332 of the suction nozzle. Further, the electronic circuit component 520 is picked up from the component support member 220 by two types of component holders 332 of the chuck B or the chuck C. Therefore, in the loose component supply device 32, it is possible to reduce the number of lead components 410 or electronic circuit components 520 returned to the component accommodator 100.

Then, when the lead component 410 or the electronic circuit component 520 is returned to the component storage device 100, the operator grips the grip 104 of the component supply device 88 to lock the component supply device 88 as described above. Is released. Then, when the operator lifts the component supply device 88, the component supply device 88 is removed from between the pair of side frame portions 190. As a result, the lead component 410 is collected from the component feeder 88 outside the loose component supply device 32.

As shown in FIG. 9, the individual control device 452 of the component supply device 32 has a determination unit 470, a component holding unit 472, and a storage control unit 474. The determination unit 470 is a functional unit for determining the target component holder based on the imaging data and the comparison table. The component holding unit 472 is a functional unit for holding a component by the determined target component holder. The storage control unit 474 is a functional unit for holding a component by the component holder 332 based on the position / holder information stored in the storage device 456.

Further, the present invention is not limited to the above examples, and can be carried out in various embodiments with various modifications and improvements based on the knowledge of those skilled in the art. Specifically, for example, in the above embodiment, all the parts on the part support member 220 are picked up based on the position / holder information, but one type is picked up based on the position / holder information. Before the parts that can be held by the part holder 332 are picked up and the parts are held by another type of part holder 332, the part support member 220 is imaged again by the camera 290, and new position / holder information is obtained. You may create it. That is, for example, the lead component 410 is held by the suction nozzle based on the position / holder information stored in the storage device 456. Then, after the suction nozzle is replaced with the chuck, the component support member 220 is imaged by the camera 290, and new position / holder information is created based on the imaged data and the comparison table. Then, the lead component 410 may be held by the chuck based on the new position / holder information.

32: Bulk parts supply device (parts supply system) 84: Imaging device 220: Parts support member (part support part) 300: Parts holding head moving device (moving device) 302: Parts holding head (working head) 332: Parts holder (Suction nozzle) (Gripping tool) 452: Individual control device (control device) 456: Storage device

Claims (5)

A component support part that supports multiple components in various postures and
A work head that selectively holds one type of holder from among the plurality of types of holders that hold the plurality of parts one by one.
A moving device that moves the work head to an arbitrary position on the component support portion, and
Control device and
With
A picking device for holding scattered parts in contact with only the upper surface of the part support portion.
The control device
The positions of the plurality of parts are acquired based on imaging data obtained by imaging the plurality of parts supported on the upper surface of the component support portion from above along the vertical axis, and based on the acquired position information of the plurality of parts. When one type of holder held by the work head holds one part of the plurality of parts by operating the moving device, the one type of holder is other than the one part. It is possible to determine whether or not the device interferes with the object, and if it is determined that the device interferes with the object, the moving device can be operated to hold the one type of holder held by the work head to hold the one component. A device for picking scattered parts, characterized by automatic replacement with another type of holder. The plurality of types of holders include a plurality of types of chucks.
The control device
The positions of the plurality of parts are acquired based on imaging data obtained by imaging the plurality of parts supported on the upper surface of the component support portion from above along the vertical axis, and based on the acquired position information of the plurality of parts. When the moving device is operated and one type of chuck held by the work head holds one of the plurality of parts, the claw of one type of chuck held by the work head is pressed. If it is determined that the one component cannot be inserted into the gap between the scattered components other than the one component and interferes with the scattered components other than the one component, the moving device is moved. The picking device for scattered parts according to claim 1, wherein one type of chuck that is operated and held by the work head is automatically replaced with another type of chuck that can hold the one part. .. The component support has side walls on both sides.
The plurality of types of holders include a suction nozzle and a chuck, and the plurality of types of holders include a suction nozzle and a chuck.
The control device
The position information of the plurality of parts is acquired based on the imaging data obtained by imaging the plurality of parts supported on the upper surface of the component support portion from above along the vertical axis, and the acquired position information of the plurality of parts is used. Based on this, when the suction nozzle held by the work head operates the moving device to suck and hold one of the plurality of parts, the suction nozzle held by the work head interferes with the side wall portion. The scattered component according to claim 1, wherein when it is determined, the moving device is operated to automatically replace the suction nozzle held by the work head with a chuck capable of holding the one component. Picking device. A swivel device for swiveling the shaft core of the suction nozzle at an arbitrary angle is provided.
The control device
When the suction nozzle held by the work head operates the swivel device to suck and hold one of the plurality of parts, it is determined that the suction nozzle held by the work head interferes with the side wall portion. In this case, the picking device for scattered parts according to claim 3, wherein the moving device is operated to automatically replace the suction nozzle held by the work head with a chuck capable of holding the one part. The picking device is an alternative picking device for holding a plurality of parts scattered on a part support portion provided with side wall portions on both side edges and provided with a swivel device that swivels the axis of the holder at an arbitrary angle. This is a method of replacing the holder, which automatically replaces the provided holder with another type of holder.
An imaging data acquisition step of acquiring imaging data by imaging a plurality of components scattered on the component support portion from above, and
When one of a plurality of parts scattered on the component support portion is held by a holder selectively provided by the picking device based on the imaging data, the components other than the one component are scattered. A determination step for determining whether or not the parts or the side wall portion and the holder selectively provided by the picking device interfere with each other.
When it is determined that the picking device interferes in the determination step, the holder replacement step of automatically replacing the holder selectively provided by the picking device with another type of holder is used.
How to replace a component holder in a picking device, including.

Images