JP2632000B2 - Printed circuit board support device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board support device that supports a printed circuit board at a predetermined position before mounting electronic components or the like on the printed circuit board.

(B) Conventional technology A conventional support device of this type is disclosed in Japanese Patent Application Laid-Open No. 58-130596. According to this technique, the upper surface of the substrate, that is, the surface on which components are to be mounted, is pressed against the top plate to determine the height. Therefore, even if the thickness of the substrate varies, the height of the component mounting surface can be kept constant.

(C) Problems to be Solved by the Invention However, according to the conventional technology, when the conveyor operation stops, the conveyor moves due to inertia, the stop position is not determined, and the height of the mounting surface is fixed. In some cases, the contact between the lifting member and the substrate is reduced, and the operation may not be reliable.

Therefore, the present invention ensures the operation for keeping the height of the component mounting surface constant even when the thickness of the board varies, by keeping the stop position of the board constant when the conveyor transport operation is stopped. The purpose is to:

(D) Means for Solving the Problems To this end, the present invention provides a substrate holding member capable of contacting the upper surface of a printed circuit board conveyed by a conveyor, and a suction device for adsorbing the lower surface of the substrate before the conveyor stops. And a push-up member that pushes up the substrate after the conveyor stops and makes the upper surface of the substrate abut against the holding member, and the suction portion of the push-up member sucks the printed circuit board before stopping the conveyance by the conveyor. It is like that.

(E) Operation The suction part of the lifting member performs the suction operation of the printed circuit board before stopping the conveyance by the conveyor, and suctions the lower surface of the substrate by the suction part so that the inertia due to the stop of the conveyor is not affected.

Thereafter, the upper surface of the substrate is pressed against the substrate holding member by the lifting member, so that the height of the component mounting surface of the substrate can be made constant.

(F) Example An example of the present invention will be described below with reference to the drawings. (1)
Denotes a main body of the electronic component mounting apparatus. The main body (1) includes a conveyor (2) for transporting a printed circuit board (including a thick film substrate) (P), a lead frame, and the like, and an upstream side of the conveyor (2). Reversing device (3) provided in the device, and the reversing device (3)
Positioning devices (4) and (5) provided downstream of the device
And a suction collet exchanging device (7) (8) fixed on the mounting table (6), and four wafer tables (9) (10)
And a wafer support table (11) (12) that can move in the XY direction and rotate in the plane direction, and is suspended by the top plate (13).
Mounting heads (14) and (15) movable in the directions.

The conveyor (2) has a pair of driving sprockets (1
6) (16), a pair of chains (18A) (18B) stretched between the driven sprockets (17) and (17), and the printed circuit board (P) is mounted on the chains (18A) and (18B). ) From upstream to downstream. At this time the chain (18A)
At (18B), an engagement piece (19) that locks at a rear end portion of the board (P) in the feeding direction is provided upright at a predetermined interval, and the board (P)
Is intermittently conveyed from the upstream side to the downstream side while being placed on both chains (18A) (18B) and locked by the respective engaging pieces (19).

The spacing between the engagement pieces (19) is an integral multiple of the chain pitch, and all the substrates (P) that fall within this spacing can be sent in common for the transport operation without any setup. it can.

Next, the movement of the conveyor (2) and the movable chute (20A) will be described. When the drive motor (21) is energized, the drive is transmitted via the belt (23), the output shaft of the index device (22) is intermittently driven, and the output shaft pulley (24) attached to the output shaft Since the spline shaft (27) rotates intermittently by the belt (26) stretched between the pulley (25) and the pool (25), the belt (26) stretched between the pulleys (28A) (28B) (29A) (29B) 30) (31) to support shaft (32) (33)
The two drive sprockets (16) (16) intermittently rotate via the. As a result, both sprockets (16) (16), (17)
Since (17) rotates, the printed circuit board (P) on the chains (18A) and (18B) is intermittently conveyed by a predetermined distance.

On the other hand, the ball screw bodies (36) and (37) fit into the nut bodies (34) and (35) provided at both ends of the movable chute (20A),
Belt (39) and pulley (40) by drive motor (38)
When the screw bodies (36) and (37) rotate via (41), the drive chute (20A) moves forward and backward with respect to the fixed chute (20B). That is, both chutes (20A) and (20B) correspond to the width in the direction orthogonal to the flow direction of the substrate (P).
The distance between them can be increased or decreased. At this time, the movable chute (20A) is moved along the spline shaft (27) by the spline bearing (42).

(43) consists of a pair of optical means for detecting the presence of the engagement piece (19) located one pitch upstream from the positioning device (4) when the feeding by the conveyor (2) is stopped. The sensor detects the displacement of the intermittently moving conveyor (2). That is, chain (18A) due to aging
When the stop position of the engagement piece (19) is shifted due to extension or the like and exceeds a certain allowable range, when the sensor (43) detects "absence", the entire electronic component mounting apparatus is stopped. In this case, the operator manually rotates the axis of the index device (22) to correct the shift amount.

A reversing device (3) is provided at a lower position between the chains (18A) and (18B) on the upstream side of the conveyor (2), and reverses the direction of flow of the substrate (P) as necessary. It is to let. The reversing device (3) is provided with an XY table (46) that can be moved in the X and Y directions by an X-axis motor (44) and a Y-axis motor (45), and various types are mounted. A mounting table (47) provided on the XY table (46). (48) is a guide that is fixed to the mounting base (47) and guides the vertical rod (49) so that it can move up and down.
(50) is a push-up body provided at the top of the upper and lower rods (49) and capable of protruding above the conveyor (2). (51) is a pulley (52) provided at a lower part of the upper and lower rods (49). Motor (5
3) Belt stretched between output shaft pulleys (54), (5)
5) has one end rotatably connected to the operating rod of the cylinder (56) and the other end fitted between the supporting portions (57) at the lower ends of the upper and lower rods (49), and can swing about the intermediate portion as a fulcrum. A swing member.

A plurality of suction paths (58) are formed at predetermined intervals in the lifting body (50) of the reversing device (3), and the upper and lower rods (49) communicate with the suction paths (58). A vacuum passage (59) is formed, and the passage (59) communicates with a vacuum source (not shown) via a rotary joint (60) and a tube (61).

A torque limiter (62) is provided between the output shaft of the index device (22) and the output shaft pulley (24), and an overload detection plate (63) is provided at an end thereof. Therefore,
When an abnormality occurs during conveyance of the printed circuit board and the detection plate (63) moves in the axial direction due to an overload state, the overload state can be detected by the pair of optical sensors (64).

(65A) and (65B) are brake members provided inside so as to oppose the upstream ends of the chutes (20A) and (20B), respectively, and each of the upper surfaces has a plurality of suction ports (66) communicating with a vacuum source. Has been established. (67A) is a loader, which stores a plurality of printed circuit boards (P) on a shelf, and a storage box (68A) which can be moved up and down by an elevator (not shown) and a board (P) at the lowest position of the box (68A). An extruding member (69) for extruding onto a conveyor (18A) (18B). This extruded member (6
9) When the board (P) in the storage box (68A) is extruded, it does not move smoothly on the conveyors (18A) and (18B), and falls off from the conveyors (18A) and (18B) with excessive force. To prevent this, the brake members (64A) and (65B) are sucked by the brake members (64A, 65B) so that they can move in a stable state. That is, the suction by the vacuum source is started at the time of starting the pushing operation of the pushing member (69), and the suction is released when the pushing operation is completed.

Next, a pair of substrate positioning devices (4) and (5) will be described. Since both have the same configuration, only one (5) will be described. The positioning devices (4) and (5)
The positioning in the feed direction of the substrate (P), the width direction orthogonal thereto, and the thickness direction of the substrate (P) is performed, which will be described below.

The shaft (72) penetrating the pair of bearings (70) (71)
1 and 2, a width shifting cam (73), a lift cam (74), and a clamp cam (75) are provided, and a pulley (76) at the left end of the shaft (72) and a motor (77) are provided. A belt (79) is stretched between the output shaft pulleys (78). Therefore, when the shaft (72) is rotated by energization of the motor (77),
Each cam (73) (74) (75) rotates, and each upper and lower member (86) (87) via each cam follower (80) (81) (82)
(88) moves up and down, causing each cam lever (89)
(90) and (91) also move up and down.

First, an apparatus (92) for regulating and positioning the substrate (P) in the feed direction will be described.

(93) and (94) are a reference clamp and a movable clamp which are in contact with the end of the substrate (P) in the flow direction.
It is rotatable around (96) as a fulcrum. And spring (97)
Thus, the reference clamp (93) is urged to rotate outward, and the movable clamp (94) is urged to rotate inward by the spring (98). Reference numeral (91) denotes a cam lever provided on the top of the upper and lower members (88) as described above. The cam lever engages with the pins (99) and (100) projecting from the clamps (93) and (94), and ) The swing of (94) is controlled.

On the other hand, a linear guide (10) extending in the flow direction of the substrate (P)
According to 1), the X table (102) can be moved horizontally. A movable body (103) that rotatably supports the movable clamp (94) is fixed to the table (102). (Not shown), a connection body (106) integrated with a ball screw body (105) into which the screw shaft (104) fits
Is fixed. (107) and (108) are bearings.

Therefore, when the screw shaft (104) is rotated by the driving source, the X table (102) moves in the flow direction via the connecting body (106), so that the movable body (103) also moves, and is moved to the reference clamp (93). On the other hand, the movable clamp (94) can move far and near, and can correspond to the length of the various substrates (P) in the feed direction.

When the cam lever (91) moves upward, the movable clamp (94) pivots outward through the pin (100), and the reference clamp (93) pivots outward by the spring (97). (93) and (94) are located below the substrate (P).

As described above, the vertical member (88) can move up and down via the guide (85), and the pin (110) protruding from the fixed chute (20B) and the pin (111) protruding from the vertical member (88).
A spring (112) is stretched between the upper and lower members (88).
Is urged upward. Therefore, since the cam follower (82) at the end of the upper and lower members (88) is pressed against the clamp cam (75), the upper and lower members (88) move up and down according to the shape of the cam (75).

Next, regulation in the width direction orthogonal to the feeding direction of the substrate (P) will be described. First, on the upper part of the fixed chute (20B)
A fixed plate (115) is provided, and a movable bearing body (116) and a reference bearing body (117) are provided on the fixed plate (115) at predetermined intervals. On the other hand, movable chute (20A)
A plurality of width shifting members (120) are attached to a support shaft (119) rotatably supported by bearings (118) and (118) provided on the shaft, and the periphery of the cylindrical portion rotatable by a shaft (not shown) is formed. It can contact the substrate (P). One end of a spring (123) as an urging member is fixed to a mounting rod (122) supported between the pair of supporting portions (121), (121), and the width shifting members (120) are respectively mounted on the substrate (P). It is urged to rotate in the direction. An engaging rod (126) is provided on an upper portion of a transmission arm (125) rotatable by a support shaft (124) supported between the pair of support portions (121), (121). Each of the shift members (120) operates to move away from the substrate (P). A cam follower (127) is provided at the other end of the transmission arm (125), and the width shifting cam (7
3) The vertical movement of the cam lever (89) accompanying the vertical movement of the vertical member (86) having the cam follower (80) engaging with the cam follower (127) by the lever (89)
, The transmission arm (125) is rotated.

Next, a regulating device (130) for keeping the position of the component mounting surface on the substrate (P) constant irrespective of the thickness of the substrate (P) will be described. The fixed chute (20B) and movable chute (20A) have linear guides (84) (8
According to 4), the upper and lower members for suction (87A) and (87A) can be moved up and down. A spring (13) is provided between the pins (131) and (131) projecting from the chutes (20B) and (20A) and the pins (132) and (132) projecting below the upper and lower members (87A) and (87A).
3) (133) is stretched to urge the upper and lower members (87) and (87) upward.

On the other hand, the cam followers (134) and (134) provided at the ends of the upper and lower members (87A) and (87A) are pushed down by the cam lever (90). That is, since the cam lever (90) is provided at the upper end of the upper and lower member (87) having the cam follower (81) engaged with the lift cam (74), the lift cam (74)
Accordingly, the suction upper and lower members (87A) and (87A) move up and down, respectively.

Reference numerals (135) and (135) denote substrate holders provided above the chutes (20A) and (20B), which have engagement portions (136) and (136) which can be engaged with the upper surface of the substrate (P). I have.

Further, a plurality of suction holes (137) are formed in the suction portion (138) on the upstream side of the suction upper and lower members (87A) (87A), and a vacuum pipe (139) (139) In communication with the source. Therefore, the upper and lower members (87A) (87A)
The lower surface of the printed circuit board (P) can be attracted to the upper part of the substrate.

The upper surfaces of the upper and lower members (87A) and (87A) are set at a level slightly higher than the conveyor surface of the conveyor (2), and the engagement pieces (19) and (19) of the chains (18A) and (18B) are provided. As a result, the substrate (P) is transferred from the conveying surface of the conveyor (2) to the upper and lower members (87A) and (87A), and at that time, vacuum suction is started. Then, when the conveyor (2) stops, the suction is stopped. However, the suction does not move the printed circuit board (P) due to inertia when the conveyor (2) stops. Therefore, without causing a large displacement
Lifted up by the upper and lower members (87A) and (87A),
The printed board (P) is pressed against the engaging portions (136) and (136) of the board pressers (135) and (135) in a state where the positioning is performed in the feed direction and the width direction orthogonal to the feed direction.

Next, the wafer supports (11) and (12) will be described in detail, but both have the same structure, and only the support (11) will be described. (140) is an XY table, and an X-axis motor (14
1) X-axis direction guide (14)
3) It is movable in a planar direction along the Y-axis direction guide (144). The wafer table (9) placed on the XY table (140) can be rotated forward and backward by a driving source (not shown).

Therefore, a desired wafer sheet (146) is located above the push-up needle device (145). Since there are four wafer tables (9), at least one
More than one kind and four kinds or less of wafers, for example, each having a different size.

Next, one mounting head (14) will be described in detail. The head (14) is supported by a support member (15) supported by a top plate (13).
0) can be moved in the X direction along the bone screw (151) supported by the drive motor (154A) shown in FIG. 43, and the drive motor (154B) can be moved along the guides (152) and (152). This enables movement in the Y direction. A drive motor (154) disposed in a substantially box-shaped head body (153).
A belt (158) is stretched between the output shaft pulley (155) of C) and the pulley (157) at the end of the screw shaft (156), and the vertically movable body (159) is guided by a nut body (160). Body (161)
Can be moved up and down via.

The vertical moving body (159) has a pressing motor (162)
And a lock solenoid (163) are fixed, and an output shaft of the motor (162) is provided with a lever (165) having a spring mounting pin (164). The solenoid (163)
The plunger (166) has a mounting pin (167) protruding therefrom.
An L-shaped support (16) fixed to a vertically movable body (159)
8) Spring A (17)
0) is stretched.

A support shaft (172) is mounted on the bearing (171) of the vertical moving body (159).
The rocking body (173) is rotatable by the
A U-shaped groove is cut out at the upper end of 3), the mounting pin (167) is fitted into the groove, and a pressure bearing body (174) is provided at the other end of the rocking body (173). ing.

Reference numeral (175) denotes a fixed bearing body which clamps a flange (177) protruding from the rotary joint (176) with the pressure bearing body (174), and is provided at an end of the support (168). ing. It is stretched between a mounting pin (178) protruding from the rocking body (173) and a mounting pin (164) protruding from a lever (165) fixed to the output shaft of the pressurizing motor (162). The pressure bearing body (17) is
4) is urged downward. And this pressurizing motor (1
By controlling the rotation angle of 62), the pressing force of the pressure bearing body (174) on the rotary joint (176) and the fixed bearing body (175) can be made variable. The spring B (179) is composed of a pellet (180A), (180
This is for applying a pressing pressure when mounting B) on the substrate (P).

Also, mounting pins (18) protruding from the vertical moving body (159) are provided.
A balance spring C (183) is stretched between 1) and the mounting pin (182) protruding from the rotary joint (176), and the elastic force of the spring C (183) and the suction nozzle body (184). The elastic force is set so that the own weight of the suction collet (185) is substantially equal to that of the suction collet (185), and the influence of the own weight is eliminated.

A pin (186) protrudes from the rotary joint (176), and a locking piece (187) fitted to the pin (186).
Thus, rotation of the joint (176) itself is prevented.

The suction nozzle body (184) is connected to the rotary joint (17
6), connected to a vacuum source (not shown) via a hose (190), a vacuum switch (191) used for detecting the presence or absence of adsorption of a large pellet (180B). The suction nozzle body (184)
Can be moved up and down in the vertical guide body (192), but a chamfered portion (193) is formed on the upper part of the nozzle body (184), and the inside of the vertical guide body (192) is controlled by the regulating bearing (194). Θ rotation is not possible. The vacuum switch (191) is activated when the suction pressure by the vacuum source becomes equal to or higher than a predetermined value, and determines that the adsorption collet (185) is not adsorbing the pellet.

A drive motor (19) is provided in the head body (153).
A belt (198) is stretched between an output shaft pulley (196) and a pulley (197) fixed around the upper and lower guide bodies (192), and the motor (195) is energized by the motor (195). The suction nozzle body (184) that the upper and lower guide body (192) rotates while being guided by the bearing body (199) via the belt (198).
Is also rotated by θ.

At the lower end of the suction nozzle body (184), a suction collet (1
85) is detachably provided by locking and unlocking the lock mechanism (200).

Reference numeral (201) denotes a DC solenoid attached to the side surface of the head body (153), and an operation lever (203) pivotally supported at an intermediate portion is rotatably connected to the plunger (202). Reference numeral (204) denotes an up-down slider which can move up and down along a guide rail (205) extending up and down on the head main body (153). A spring D is provided between the slider (204) and a pin (207) protruding from the slider (204). (208) is stretched to urge the slider (204) upward.

The slider (204) is provided with a cam follower (210), and the head body (153) is provided with an upper limit stopper (211) and a lower limit stopper (212). (210), when the solenoid (201) is excited, the operating lever (203) rotates counterclockwise to move the slider (20).
4) Press down the cam follower (210) and the stopper (212)
When it comes into contact with and stops and demagnetizes in the same way, the operating lever (203)
Rotates clockwise and the lever (203) moves to the upper limit stopper (2
Slider (2) by spring D (208) until contact with 11)
04) Press up.

Therefore, since the photoelectric detecting device (215) provided with the light emitting element (213) and the light receiving element (214) and used for detecting the adsorption of the thick but small pellet (180A) is provided at the lower end, the vertical slider (215) The photoelectric detection device (215) also moves up and down by the up and down movement of (204).

Therefore, when the detection device (215) is in the lower position,
Pellet (180A) on which adsorption collet (185) is adsorbed
(180B) can be detected and when it is in the upper position,
The presence or absence of the suction collet (185) itself can be detected.

(284A) and (284B) are holding type interlocking changeover switches, which can be arbitrarily switched by the user. (285) and (286) are OR circuits and AND circuits, respectively.
Connected to computer (287). Therefore, when the changeover switches (284A) and (284B) are set as shown in FIG. 43, either the vacuum switch (191) or the photoelectric detection device (215) detects the pellet "absence". Then, the pick-up operation is repeated a preset number N of times in a pellet-less counter (not shown). When the number of times exceeds N, the microcomputer (287) sends each motor (154A) through the motor drive circuit (288). (154B) (1
54C) to stop the operation of the mounting device after returning the mounting heads (14) and (15) and to notify the user of the visual or auditory sound of the indicator lamp, buzzer, etc. by the notification means (289). Inform After that, the user, "No" pellet
Is true or not, and if it is not, adjust the operation level of the vacuum switch (191) or use the photoelectric detection device (21
Adjustment of the height position in 5) may be performed once for trial run or restart.

Also, when the changeover switches (284A) and (284B) are switched, when both the vacuum switch (191) and the photoelectric detection device (215) detect the pellet "absence", the microcircuit is connected via the AND circuit (286). -The computer (287) receives the detection output and performs the same control as described above.

The changeover switches (284A) and (284B) and the OR circuit (28
5), Of course, instead of the AND circuit (286), equivalent functions can be replaced by a key input device and a random access memory (RAM).

Next, the adsorption collet (185) will be described.
At the lower end of the nozzle body (184), a lock mechanism mounting part (2
16) is formed, and a lock mechanism (200) is provided on the mounting portion (216). A hollow mounting space (218) is formed in the mounting portion (216), and the adapter (219) of the suction collet (185) is fitted therein. On both sides of the mounting portion (216), lock pawls (221) are provided between the bearings (220) and (220), respectively, and the support shaft (222) penetrates them, and the lock protrusions (221) are provided.
Are disposed so as to face each other, and are biased by springs (223) so that the lower ends thereof approach each other. Reference numeral (224) denotes a positioning pin protruding from the lower surface of the mounting portion (216), and can be fitted into a U-shaped groove (225) described later.

The suction collet (185) includes an adapter (219) fitted into the mounting space (218) of the mounting portion (216), and a lower portion of the adapter (219) when the fitting (216) is fitted.
It is composed of an adapter flange (226) that comes into contact with the lower surface, and a suction part (227) that directly suctions the pellets (180A) and (180B). On both sides of the flange (226),
A locking portion (228) having a lower portion recessed inward is formed, and the lower end of the lock claw (221) enters the locking portion (228) to lock.

Next, the adsorption collet exchange devices (7) and (8) will be described, but since both have the same structure, only one (7) will be described. The exchange device (7) is roughly divided into a tool stocker (231) and a stocker table (232) that can be moved up and down with respect to a mounting plate (230) by a drive source (not shown);
A pin mount (234) having a plurality of lock release pins (233) at predetermined intervals.

The stocker (231) and the stocker base (232) have substantially the same shape, and are provided with a plurality of mounting holes (235) and (236) that match each other at a predetermined interval. Two compliance pins (237) are loosely fitted in the holes formed in the stocker (231) and the stocker base (232), and the stocker (231) and the stocker base are fixed by the head (238) and the coil spring (239). (232) are pressed against each other via steel balls (229) in grooves formed in the upper surface of the stocker table (232). This ball (22
9) on the stocker table (232) by the stocker (23)
1) comes to roll. By slightly increasing the diameter of the hole into which the pin (237) fits, the center of the suction nozzle body (184) and the stocker (231) when the suction collet (185) is attached and detached are slightly larger than the diameter of the compliance pin (237).
It can absorb the misalignment of the center of the adapter (219) of the suction collet (185) housed in the housing.

Lock release pins (233) of the same length, each standing from the pin mounting base (234), penetrate the stocker (231) and the stocker base (232).

A suction collet support stand (240) is erected at the rear end of the periphery of the upper surface side opening of the mounting hole (235) of the stocker (231), and positioning pins (241) and (241) are erected, respectively.
Therefore, when the suction collet (185) is placed on the exchange device (7), the flange portion (226) abuts on the support base (240), and the longitudinal direction of the flange portion (226) is naturally increased. U-shaped grooves (225) and (225) are formed at the ends on the direction side, and positioning pins (241) and (241) are fitted into the grooves (225) and (225), respectively, so that the θ of the collet (185) is Prevent rotation.

The pin mounting base (234) can move up and down while the shafts (244) and (244) are guided by guides (243) and (243) by a cylinder (242) mounted on a mounting plate (230). (245) and (245) are bearing members provided on the stocker table (232), and a shaft rod (246) having a plurality of pressing members (247) fixed to the bearing member (245) at predetermined intervals. Are rotatably supported. The holding member (247) has a substantially crank shape, and one end is provided at the adapter flange (22).
6) engages from above, and can be used as an optional holding member (247)
The other end of the cylinder is a cylinder (248) as a rotation drive source
Are linked.

The tool stocker (231) and stocker table (2
The pitch of the multiple mounting holes (235) and (235) opened in 32), the pitch of the holes (not shown) where the lock release pin (233) fits, and the mounting pitch of the lock release pin (233) All have the same pitch.

Next, the push-up needle device (145) will be described in detail. First, a drive motor (not shown) and a gear provided on an output shaft thereof mesh with a gear (250), and the gear (250) enables the rotation guide (251) and the rotating plate (252) to rotate forward and backward by 90 degrees. It is. Reference numeral (254) denotes a base body that moves up and down by a cylinder (253). The base body (254) is guided by a rotation guide bearing (255) attached to the base body (254), and is rotated by the rotation guide (25).
1) is rotatable.

The rotating plate (252) has first operating levers (258) and (259) movable along the first guide rails (256) and (257) at positions different from each other by 90 degrees, and a second guide respectively. A second operating lever (262) (263) movable along the rails (260) (261) is provided. Guide bodies (264) and (265) are provided on the second operation levers (262) and (263). The guide body (264) corresponds to a small pellet (180A), and has a small outer diameter of the stage surface (262) and a small hole diameter of the suction hole (267). In the guide body (264), a guide passage (269) for vertically moving the push-up needle (268) is formed in a central portion, and four suction holes (267) are formed in one collecting chamber ( 270) and then to a vacuum source via one communication passage (271) and conduit (272).

The other guide body (265) is a large pellet (180
The outer diameter of the stage surface (273) is larger than that of the stage surface (266),
The hole diameter of 4) is also larger than that of the suction hole (267). The guide body (265) has, for example, four push-up needles (2
75) and the needle (2)
A guide passage (277) is formed for vertically moving a support rod (276) for supporting the support rod (75), and eight suction holes (2) are opened.
74) communicate with a vacuum source via a communication passage (280) and a conduit (281) after communicating with one collecting chamber (279). Therefore, the total suction force of the guide body (265) is set to be larger than that of the guide body (264).

Further, coil springs (282) and (283) are attached to the first operating levers (258) and (259), respectively, in a state of being wound below the push-up needle (268) and the support rod (277). Therefore, the levers (258), (259), (262), and (263) are urged by the springs (282) and (283) to be separated from each other.

(290) and (291) are lower limit stoppers, and when the engaging portions (292) and (293) of the first operating levers (258) and (259) come into contact, the lower limits of the levers (258) and (259) are determined. You. That is, the lower limits of the needles (268) and (275) are determined.

Then, the upper and lower rollers (294) described below respectively
When the operating levers (258) and (259) move upward, the springs (282) and (283) move the second operating levers (262) and (283).
(263) also moves up, but the upper limit stopper bolt (295)
When (296) comes into contact with upper limit stoppers (297) and (298), upward movement is limited. Further, when the first levers (258) and (259) move upward against the springs (282) and (283), the needle (268)
(275) rises and pushes up the pellets (180A) and (180B) of the wafer sheet (146). (29
9) and (300) are push-down pins, and the first operating lever (25
8) and (259) descend when the second operating lever (26
2) (263) will also fall.

On the other hand, the drive motor (301) is located above the base body (254).
The output shaft pulley (302) and the screw shaft (30
A belt (305) is stretched between the upper pulley (304) and the belt (305). Reference numeral (306) denotes a support for supporting the screw shaft (303), and reference numeral (307) denotes an upper and lower bar fitted with the screw shaft (303) and moved up and down by rotation of the screw shaft (303). The upper and lower bars (307) are loosely inserted into the hollow portion of the rotation guide (251),
The upper and lower rollers (294) at the end of the bar (307) are
7) First actuating lever (258), (259) with upward movement
Is moved up as described above.

Reference numerals (308) and (309) denote rotating plate stoppers which abut against the rotating plate (252) to secure the stop position of the rotating plate (252). A shock absorber is provided to reduce the impact when the rotating plate (252) comes into contact.

Then, as shown in FIG. 40, the guide body (264),
A first filter (31) is provided between (265) and the vacuum source.
0), (311), switching valves (312), (313), and a two-way throttle valve (314) (315) connected in parallel between the switching valves (312), (313) and the vacuum source. ), (316) (317), the second filter (318) (319), (320) (321) and the valve (32).
2) (323), (324) and (325) are provided.

Adjustment of the vacuum pressure is performed by using a two-way throttle valve (314) (315), (31
6) Valve (326) (32) that is open to one atmosphere of (317)
7), (328), (329) Determined by the degree of aperture.

The first filters (310) and (311) remove dust sucked from the suction holes (267) and (274), and changeover valves (312) and (313) and a two-way throttle valve (326) ( 327),
(328) to protect (329) and the second filter (318),
(319), (320) and (321) are the two-way throttle valve (326)
The dust sucked from (327), (328) and (329) is removed to protect the valves (322) (323) and (324) (325), respectively.

 The operation of the above configuration will be described below.

(I) Conveyor (2) width adjustment operation The movement operation of the movable chute (20A) with respect to the fixed chute (20B) will be described below. In order to be able to convey the printed circuit boards (P) of various sizes to the conveyor (2), first, the driving motor (38) drives the ball screw () via the belt (39) and the respective pulleys (40) (41). 36) (37)
To rotate. Then, the nut bodies (35) and (36) move forward and backward together with the movable chute (20A). At this time, the movable chute (20A) moves while being guided by the spline shaft (27). Therefore, both sprockets (16), (17)
The chain (18B) stretched between them also moves, and can correspond to the width of the printed circuit board (P) in the direction orthogonal to the feed direction.

(Ii) Print substrate (P) transport operation When the drive motor (21) is energized, the index device (22) operates via the belt (23), and its output shaft pulley (24) and pulley (25) Between the belt (2
6) rotates the drive sprockets (16) and (16) via the support shafts (32) and (33). Therefore, the driven sprockets (17) (17) also rotate, and the printed circuit board (P) on the chains (18A) (18A) is intermittently conveyed.

At this time, the printed circuit board (P) is intermittently conveyed in a state where its upstream end is engaged with each engagement piece (19).

The indexing device (2) should be used so that dimensional errors in the machining of the drive sprocket (16) do not cause variations in feed accuracy.
By the indexing of 2), the sprocket (16) is rotated once, and the sprocket (16) is rotated so that one rotation of the sprocket (16) becomes one pitch of the intermittent conveyance.
The number of pulley teeth is determined.

Also from the loader (67A) to the chain (18A) (18B)
To bridge the printed circuit board (P) upward, first put the storage box (68
This is performed by extruding the lowermost substrate (P) in A) by the extruding member (69). That is, the extrusion member (69)
Operates so that each board (P) is located between the engagement pieces (19).

When the pushing member (69) pushes out the substrate (P), the brake members (65A) and (65B) move the substrate (P) through the suction ports (66) in synchronization with the start of the pushing operation. Conveyor (18A) (18B) because brake is applied by vacuum
I can move on in a stable state. After the transfer, the suction by the vacuum source is released in synchronization with the end of the pushing operation.

If an accident occurs during the transfer of the substrate (P) and the load is overloaded, the torque limiter (62) operates and the detection plate (63) moves in the axial direction. (64) can detect an overload condition. At this time, the drive motor (21) is de-energized, and the user is notified of this by a not-shown notifying means. Therefore, the user may remove the cause of the accident.

The printed circuit board (P) is conveyed in this manner. However, when the chain (18A) elongates at a rate of change with time or the like, the stop position of the engagement piece (19) is shifted to exceed a certain allowable range. When the sensor (43) detects the presence of the engagement piece (19) as “absent” without being blocked by the engagement piece (19), the entire electronic component mounting device is stopped. In this case, the operator may manually turn the axis of the index device (22) to correct the amount of displacement and return the index device to the normal position.

(Iii) Positioning operation of the printed circuit board (P) When the chain (18A) (18B) detects that the position of the positioning device (4) has been reached, the drive motor (21) is de-energized and the printed circuit board (P) is turned off. The conveyance of (P) stops.

Then, since the motor (77) is energized and the shaft (72) rotates via the belt (79), each of the cams (73) (74) (7
5) also rotates, and according to the shape of the cam, via the cam followers (80) (81) (82), the upper and lower members (86) (87)
(88) will move up and down. Thereby, the feed direction of the printed circuit board (P), the width direction orthogonal to the feed direction,
Position control in the vertical direction perpendicular to these directions is performed.

Before the position regulating board (P) in the feed direction of the printed board (P) in the feed direction reaches the positioning position, the cam lever (91) is in the raised position, and is in the state shown in FIG.

And the upper and lower members (88) are spring
When the movable clamp (94) is lowered by the spring (98), the reference clamps (93) are rotated by the spring (97) against the spring (97) to regulate the position of the printed circuit board (P) in the feed direction. It is.

That is, when the upper and lower members (88) descend along the guide (85), the movable clamp (94) and the reference clamp (93) meet with the support shaft (95) as the fulcrum. For this reason, each clamp comes into contact with the upstream end face and the downstream end face of the substrate (P).

When changing the dimensions of the printed circuit board (P) in the feed direction, the screw shaft (104) is rotated by a drive source (not shown) before being mounted on the chains (18A) and (18B). When the screw shaft (104) rotates, the X table (102) moves along the linear guide (101) via the ball screw body (105) and the connecting body (106). This X
Since the movable body (103) supporting the movable clamp (94) is fixed to the table (102), the reference clamp (9
The movable clamp (94) can move away from 3). This makes it possible to cope with a change in the size of the printed circuit board (P) in the feed direction.

Before the printed board (P) reaches the positioning position in the width direction orthogonal to the feeding direction of the printed board (P), the spring (123) is used because the upper and lower members (86) and the cam lever (89) are at the raised position. 11) is in a state as shown in FIG.

Then, the upper and lower members (86) descend according to the shape of the width shifting cam (73) which is rotated by energization of the motor (77). Therefore, the spring (123) rotates the upper portion of the width-shifting member (120) toward the substrate (P) with the support shaft (119) as a fulcrum. This rotation causes the substrate (P) to move the movable bearing body (11).
6). Therefore, the position in the width direction of the substrate (P) is regulated.

When the dimension of the printed circuit board (P) in the width direction orthogonal to the feed direction changes, the movable chute (20A) is moved by the drive motor (38) to move the movable chute (20A) with the fixed chute (20B) as described above. By widening or narrowing the interval, these width shifting members (120) may be moved as a result.

Before the board (P) reaches the positioning position, the upper and lower members (87) and the cam lever (90) are at the lowered position as shown in FIG. Each chain (18A) is slightly higher than the upper surface of the upper and lower members (87A) and (87B).
The board (P) is transferred from the chain to the upper surfaces of the upper and lower members (87A) and (87B) by the engagement pieces (19) of (18B) and is sucked. Then, when the conveyor (2) stops, its suction also stops. However, due to the suction, the printed board (P) rarely moves due to inertia when the conveyor (2) stops.

When the upper and lower members (87) and the cam lever (90) rise according to the shape of the lift cam (74) that rotates when the motor (77) is energized, the printed circuit board (P) is moved by the springs (133) and (133). Ascending and descending members (87A)
(87A). Therefore, the substrate (P)
Is in a state of contact with the lower surfaces of the engaging portions (136) and (136) of the substrate pressers (135) and (135) in a state where the position is regulated in the feed direction and the width direction orthogonal to the feed direction ( (See Fig. 14).

Therefore, the substrate (P) is restricted by the restriction position (130).
The position of the component mounting surface can be kept constant regardless of the thickness of the substrate (P).

The above-described position regulation of the substrate (P) is started almost equally by energization of the motor (77). However, the position regulation in the feed direction, the position regulation in the width direction orthogonal to the feed direction, and the like. Are finished in the order of the position regulation in the vertical direction orthogonal to the direction.

(Iv) Operation of the wafer table (9) etc. The pellets are mounted on the printed circuit board (P) whose position is regulated as described above. Before mounting, the desired wafer on the wafer table (9) is mounted. Seat (14
The wafer support (11) is rotated forward or backward by a drive source (not shown) so that 6) moves to the station (A).

Next, the XY table (14) is moved along the guides (143) and (144) by the X-axis motor (141) and the Y-axis motor (142).
0) and the support table (11) are moved in the plane direction so that the pellet (180A) on the desired wafer sheet (146) is positioned above the guide body (264) of the push-up needle device (145). I do.

Then, the base body (254) is moved upward by the cylinder (253), and the guide body (264) is moved to the wafer sheet (146).
Close to. After that, the drive motor (301) is energized,
The screw shaft (303) is rotated via each pulley (302) (304) and the belt (305) to raise the upper and lower bars (307).
Then, the bar (307) raises the first operating lever (258), and the second lever (26) is moved by the spring (282).
2) also rises, but the bolt (295) is
7), the upward movement is limited.

However, since the first lever (258) further moves upward,
The push-up needle (268) rises. Therefore, as shown in FIG. 36, the sheet (146) adsorbed on the stage surface (266) is pushed up by the vacuum source via the conduit (272), the communication path (271) and the suction hole (267), and the sheet ( 146) The pellet (180A) is peeled off from the surface, and the pellet (180A) is surely sucked by the suction part (227) in a state where the pellet (180A) is held by the suction part (227) of the mounting head (4).

However, at this time, the push-up needle (268) does not push up from its lower limit stop position at once, but in order to synchronize with the rising timing of the adsorption collet (185) after the pellet is adsorbed, first, the upper end of the push-up needle (268) is set on the stage. Surface (26
After waiting at the same level as in step 6), the sheet (146) is raised and pushed up with an appropriate timing signal (see FIG. 36). At this time, a pellet (180A) is formed between the adsorbing collet (185) and the lower end of the adsorbing section (227).
The needle (268) further rises even if the pinch is clamped, so that the suction nozzle body (184) against the spring B (179) even when the vertical moving body (159) of the mounting head (14) is stopped. To rise.

After this, the push-up needle (268) and the suction nozzle body (184)
Synchronously, they rise together while holding the pellet (180A). Then, after reaching a predetermined rise, only the nozzle body (184) rises, the needle (268) descends, and returns to the standby position.

After the suction, the rotation of the drive motor (301) is reversed, the upper and lower bars (307) are moved down, and the first operating lever (258) is lowered by the spring (282).
When the upper and lower bars (307) further move down, the second operating lever (262) also lowers, and this push-up needle device (14)
5) is initialized by being lowered by the cylinder (253).

If you want to install the next bigger pellet (180B)
The support table (11) is rotated so that the wafer sheet (146) is located at the station (A), and the XY table (140) and the support table (11) are moved in the plane direction.
Prepare for the next mounting operation. Further, the rotating plate (252) of the push-up needle device (145) is rotated by 90 degrees. That is, power is supplied to a drive motor (not shown), and the rotation guide (251) and the rotating plate (252) are rotated by the gear (250) meshing with the gear provided on the output shaft, and the rotating guide (251) is brought into contact with the rotating plate stopper (308). To make sure the stop position.

Therefore, guides (26) for large pellets (180B)
5) is located immediately below the wafer sheet (146).

As shown in FIG. 40, when the pellets are peeled from the wafer sheet (146), the vacuum pressure for adsorbing the wafer sheet (146) to the stage surface (266) can also be changed. That is, in the case of a relatively small pellet (180A), by switching the switching valve (312), one of the two-way throttle valves (314) and (315) can be selected and suctioned at different vacuum pressures. In the case of a very large pellet (180B), one of the two-way throttle valves (316) and (317) can be selected and sucked at a different vacuum pressure by switching the switching valve (313).

Therefore, two kinds of vacuum pressures can be selected and adjusted for each guide body (264), (265), and each wafer table (9) (1) can be adjusted.
0) It is possible to cope with different types of wafers having different sizes.

For example, when handling the aforementioned small pellet (180A), the switching valve (312) is switched to select the bifurcated throttle valve (314), and the valves (323), (324) and (325) are closed. , Valve (322) open. Then, the vacuum pressure becomes, for example, 250 mmHg. At this time, the suction hole (267) of the guide body (264)
The dust sucked through the filter is removed by the first filter (310), and the switching valve (312) and the two-way throttle valve (314) are protected. Further, dust sucked from the valve (326) of the two-way throttle valve (314) is removed by the second filter (318),
Valve (322) is protected. When handling pellets slightly larger than this pellet (180A), changeover valve (312)
To select the bifurcated throttle valve (315) and set the vacuum pressure to, for example, 350 mmHg.

Of course, when handling large pellets (180B), switch the switching valve (318) and select one of the two-way throttle valves (328) and (329), and set the vacuum pressure to, for example, 300 mmHg or 400 mmHg. Can be set to

(V) Pellet mounting operation The mounting head (14) can move in the X direction by a ball screw (151A) rotated by a drive motor (154A), and is guided by a ball screw (151B) rotated by a drive motor (154B). It is possible to move in the Y direction along the bodies (152) and (152).

Accordingly, the mounting head (14) can move to a position above the pellet (180A) to be sucked of the wafer sheet (146) located at the station (A), and then lower the suction collet (185) to obtain the desired pellet. (180
A) can be adsorbed. This will be described in detail below.

First, energize the drive motor (154C) and pull each pulley (15C).
5), (157), the screw shaft (156) is rotated via the belt (158), and the vertical moving body (159) is lowered. Then
Since the pressure bearing body (174) is pressed against the rotary joint (176) and the fixed bearing body (175) by the spring B (179) by the pressure motor (162), the suction nozzle body (184) is moved up and down by the vertical guide. It descends along the body (192) to the wafer sheet (146). Therefore, in combination with the needle (268) of the push-up needle device (145) as described above, the pellet (180A) can be reliably adsorbed.

Then, after the suction, the rotation of the motor (154C) is reversed to raise the vertical moving body (159) by the screw shaft (156). After this lifting, the lock solenoid (163) is excited. For this reason, the rocking body (173) is supported by the pivot (172) against the spring (170) by the plunger (166) sucked.
Is rotated about the fulcrum. Therefore, the flange (177) of the rotary joint (176) is held between the fixed bearing (175) and the pressure bearing (174) provided on the support (168) fixed to the vertically movable body (159). Lock in the state that was done. Of course, this locking operation is performed during the horizontal movement of the mounting head (14). After this locking operation, if necessary, the suction nozzle (184) is rotated by θ, and the orientation of the pellet (180A) in the plane direction is changed to the substrate ( Adjust to the mounting direction to P).

That is, each pulley (19) is energized by the drive motor (195).
6), (197), and the belt (198), the suction nozzle body (184) is rotated by θ by the vertical guide body (192) and the regulating bearing (194).

The suction nozzle body (184) moves to a position above the printed circuit board (P) in a state where the position is regulated as described above by the horizontal movement of the mounting head (14), and A pellet (180A) can be mounted at a desired position.

That is, as described above, the motor (154C) is energized to lower the vertical moving body (159) and lower the suction nozzle body (184) onto the substrate (P). 163) is degaussed to release the lock operation.

At this time, the pellet (1) is set by the spring B (179).
80A) is pressed against the printed circuit board (P).
Therefore, when it is desired to change the pressing force, the pressing force can be changed by setting the rotation angle of the pressing motor (162) to a desired value.

During the suction operation by the suction collet (185),
When a vacuum suction operation by a vacuum source (not shown) is started, a microcomputer (287) that supervises and controls all of the mounting devices or the detection data from the vacuum switch (191) and the photoelectric detection device (215). Take in via circuit (285) or AND circuit (286). Then, depending on the state of the changeover switches (284A) and (284A), the content of at least one of the detection data or both of the detection data is the pellet “absent”.
Then, the pickup operation is repeated by the number N set in advance in the pellet-less counter (not shown),
When the number of times exceeds N, the mounting heads (14) and (15) are returned to the origins, the operation of the mounting device is stopped, and the user is notified visually or audibly by the notification means (289). Notify. Therefore, the user can select "No" for the pellet.
Check if it is true or not, and if not, adjust the operation level of the vacuum switch (191) or use the photoelectric detection device (21
Perform the test operation or restart operation once after performing the height position adjustment in step 5), and confirm that the adjustment is appropriate. If it is not appropriate, readjustment is performed, and if appropriate, normal operation may be continued.

The mounting heads (14) and (15) are
A) The two heads can be simultaneously bonded in terms of timing because they are arranged with an interval that is an integral multiple of the interval between the engagement pieces (19) of (18B).

(Vi) Replacement operation of adsorption collet (185) The mounting operation is performed as described above. For example, the next pellet to be mounted is a large pellet (180B)
In this case, the suction collet (185) must be replaced with a suitable one. The replacement operation is described below in Chapter 25.
A description will be given with reference to FIGS.

First, as shown in FIG. 22, the suction nozzle body (184) and the suction collet (185) are lowered as described above, and the tool stocker (231) in which the suction collet is not stored in the suction collet changing device (7) is mounted. Move to the position above the hole (235).

Next, the pin mount (23
4) and a seal stocker (23
1) is raised (see Fig. 25).

Thereafter, when the nozzle body (184) and the collet (185) are further lowered, the lock claws (221) and (221) come into contact with the lock release pin (233) and the support shafts (222) and (222). Is pivoted to open (see FIG. 26). Therefore, the lock is released. However, the holding member (247), which has been rotated outward by the cylinder (248), is rotated inward by the driving of the cylinder (248), and the adapter flange portion is rotated. Press (226).

Of course, at this time, the positioning pin (241) on the support (240) is inserted into the U-shaped groove (225) formed in the flange (226).
(241) are fitted into each other, and the θ rotation of the suction collet (185) is prevented.

Then, as shown in FIG. 27, when the stocker (231) is lowered by the drive source, the adapter (219) falls out from the mounting space (218). Next, the suction nozzle body (184) is raised as described above, and the pin mounting base (234) and the lock release pin (233) are lowered (see FIG. 28). Thereafter, the suction nozzle body (184) moves to a position above the suction collet (185) for the large pellet (180A) and descends, while the pin (233) also rises. Therefore, the pin (233)
As a result, the lock claws (221) and (221) open (see FIG. 29).

And seal stocker (231) and stocker stand (2
32) Raise the adapter for adsorption collet (185) (219)
Into the mounting space (218). At this time, the positioning pin (224) on the lower surface of the mounting portion (216) is fitted into the U-shaped groove (225) of the adapter flange portion (226), thereby preventing the θ shift at the time of insertion. Thereafter, the pressing member (247) is rotated outward by driving the cylinder (248).

Thereafter, the release pin (233) is lowered, so that the lock pawls (221) and (221) are rotated inward by the springs (223) and (223) to enter the locking portion (228) and lock. (See Figure 31). And the suction nozzle body (184)
And the suction collet (185) rises and the holding member (24)
7) is rotated inward, and the stocker (231) and the stocker base (232) are lowered, whereby the replacement operation of the suction collet (185) is completed.

By replacing the adsorption collet (185), it is possible to cope with the mounting of a large pellet (180B).

Next, an operation of confirming whether or not the replacement of the suction collet (185) has been surely performed will be described.

First, when the DC solenoid (201) is excited,
The operation lever (203) presses the upper and lower sliders (204) downward via the cam follower (210) against the spring D (208), and the follower (210) is moved to the lower limit stopper (21).
2), the photoelectric detection device (215) has the suction collet (185) and the pellet (180).
A) and (180B) are detected as to whether or not they are adsorbed. However, when checking whether or not the above-mentioned collet (185) has been replaced, the solenoid (20
1) can be demagnetized. That is, due to this demagnetization, the upper and lower sliders (204) are raised by the spring D (208), and the operating lever (203) comes into contact with the upper limit stopper (211) and is locked, and as shown in FIG. Equipment (215)
Can confirm the presence of the adsorption collet (185). If the existence “absence” is detected, the subsequent operations are stopped,
The user is notified by notifying means (not shown).

When the mounting operation is performed as described above, each operation of the positioning device (4) is stopped. That is, the motor (77) is energized again to rotate the width shifting cam (73), the lift cam (74), and the clamp cam (75), and the cam lever (91)
(89) is raised, the cam lever (90) is lowered, and the suction upper and lower members (87A), (87A) suction holes (13
7) The suction by the vacuum source is stopped to stop the suction of the printed circuit board (P) through
7) Turn off the power and return to the initial state. After that, the drive motor (21) is energized and the printed circuit board (P) is transported downstream by the chains (18A) and (18B).

(Vii) Inversion operation of the printed circuit board (P) In this manner, the mounted printed circuit board (P) is transported downstream, and as shown in FIG. 41, a storage box (68B) that can be moved up and down by an elevator (not shown). Is stored sequentially.
This storage box (68B) is the storage box (68A) of the aforementioned loader (67A).
It has exactly the same structure as A). Therefore, all the printed circuit boards (P) in the storage box (68A) of the loader (67A) are mounted and stored in the storage box (68B) of the unloader (67B).

Here, depending on the printed circuit board (P), a large number of pellets must be mounted. In this case, it is necessary to mount the pellets again on the chains (18A) and (18B). In this case, the storage box (68B) in which the printed circuit board (P) is stored and the storage box (68A) in which the printed board (P) is not stored may be exchanged and set in the loader (67A) and the unloader (67B).

In this case, the reference side at the time of positioning the printed circuit board (P) is the reversing side, but it may be reversed in the plane direction by the reversing device (3). The details will be described below.

As described above, the chain (18A) (18
B) When the substrate (P) is placed on the substrate and is intermittently conveyed and comes to a position immediately above the reversing device (3), the drive motor (21) which is a driving source for conveyance is stopped and the cylinder is stopped. Drive (56). Then, the swing member (55) rotates and the guide (48)
The upper and lower rods (49) are moved upward by a vacuum source (not shown). The printed board (P) is lifted while adsorbing on the upper surface of the body (50). After that, turn on the motor (53) and pulley (5
4) The push-up body (50) is rotated by 180 degrees in the plane direction via the belt (51) and the belt (51).

Thereafter, the drive of the cylinder (56) is stopped, the swing member (55) is returned to the initial state, and the lifting body (50) is lowered. At this time, the suction by the vacuum source is released and the pressure is returned to the atmospheric pressure.
A) It is placed on (18B), and the transport drive motor (2
The printed circuit board (P), which has been turned 180 degrees, is again conveyed by energizing 1), positioned as described above, and a desired pellet may be mounted.

Therefore, the reference side when positioning the printed circuit board (P) is the same side as when the first transfer and positioning is performed.
Mounting accuracy is improved.

When flowing a printed circuit board (P) having a changed width dimension perpendicular to the opposite direction, the X-axis motor (4
4) Drive the Y-axis motor (45) to move the XY table (4
6) to move the chain (1
8A) and (18B) can be dealt with by moving the push-up body (50) to its intermediate position.

(G) Effects of the Invention As described above, in the present invention, the suction operation of the printed board is performed by the suction portion of the lifting member before the conveyance is stopped by the conveyor, and therefore, the inertia due to the stop of the conveyor is not affected. Accordingly, the upper surface of the substrate is pressed against the substrate pressing member by the lifting member, so that the height of the component mounting surface of the substrate can be kept constant.

[Brief description of the drawings]

1 is a plan view of the electronic component mounting apparatus, FIG. 2 is a front view of the mounting apparatus viewed from the inside of a fixed chute, and FIG. 3 is a right side view of a transport unit of the mounting apparatus. The figure is a partial front view of the chain (18A), FIG. 5 is a sectional view taken along line XX 'of FIG. 1, FIG. 6 is a sectional view taken along line YY' of FIG. 1, and FIG. View of the device (92) for performing
FIG. 9 is a front view of the device (92) in an operation standby state, FIG. 9 is a front view showing a positioning state of the printed circuit board (P) having a long dimension in the feed direction by the device (92), and FIG. FIG. 11 is a plan view of (4), FIG. 11 is a sectional view taken along the line ZZ 'of FIG. 1, and FIG. 12 is a sectional view of a main part showing a state before positioning of the printed circuit board (P) in the width direction. FIG. 13 is a cross-sectional view taken along the line VV ′ in FIG. 1 showing a state before positioning by the regulating device (130), and FIG. Is also a regulatory device (13
FIG. 15 is a partial plan view showing a state in which a device for regulating a position in a width direction orthogonal to a substrate feeding direction is removed, and FIG. 16 is a partial view of a mounting head. FIG. 17 is a longitudinal right side view of the mounting head, FIG. 18 is a partially cutaway plan view of the mounting head, FIG. 19A
Fig. 19B is a right side view of the mounting head with a partial cutout, Fig. 19B is a right side view of the mounting head with a vertical slider raised, and Fig. 20 is a vertical sectional view of the suction nozzle lower end and a suction collet. , FIG. 21 is a left side view of the lower end portion of the suction nozzle, FIG. 22 is a vertical sectional front view of the suction nozzle replacement device, FIG. 23 is a plan view of the same replacement device, and FIG. 24 is a left side of the same replacement device. FIG. 25 to FIG. 32 are views showing the exchange operation of the suction collet, FIG. 33 is a front view of the push-up needle device when handling small pellets, FIG. 34 is a right side view of FIG. 35
The figure shows a front view of the same device for handling large pellets, No. 36
The figure shows a vertical section of a push-up guide for small pellets,
FIG. 37 is a plan view of the guide, FIG. 38 is a longitudinal sectional view of the push-up guide when handling large pellets, FIG. 39 is a plan view of the guide, FIG. 40 is a suction circuit diagram required for push-up, and FIG.
The figure is a schematic view of the mounting device of the present invention, showing the operation of the reversing device, FIG. 42 is an explanatory diagram of the operation of the reversing device, and FIG. Each figure is shown. (2) ... conveyor, (20A) ... movable chute, (20
B) ... fixed chute, (87) ... upper and lower members, (87A) ...
... upper and lower members for adsorption, (130) ... regulating device, (135) ...
Substrate retainer, (136) ... engaging part, (137) ... suction hole,
(138)… suction part.

Claims (1)

(57) [Claims] A substrate holding member capable of contacting an upper surface of a printed circuit board conveyed by the conveyor, an adsorbing portion for adsorbing the lower surface of the substrate before the conveyor stops, and holding the substrate after the conveyor stops. And a push-up member that pushes up the upper surface of the board to the holding member, and wherein the suction portion of the push-up member sucks the printed board before stopping conveyance by the conveyor.