JPH0770866B2 - Collet exchange device for electronic component mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a collet exchange device for an electronic component mounting device that automatically exchanges a suction collet according to the type of electronic component.

(B) Conventional Technology A conventional collet exchange device of this type is disclosed in Japanese Patent Laid-Open No. 62-145899. According to this exchange device, the leaf spring is engaged with the concave portion of the suction nozzle and holds the nozzle,
When replacing the nozzle, when the spare nozzle is placed on the stock nozzle holder, the transfer head is raised while the hook of the nozzle is held by the claw to open the leaf spring. Further, when the suction nozzle stocked in the nozzle holder is mounted on the transfer head, the stock spring is forcibly opened by the stocked suction nozzle to engage the flat spring with the recess.

(C) Problems to be Solved by the Invention However, according to the prior art, since the leaf spring is rubbed against the suction nozzle to open and close, the recesses of the leaf spring and the suction nozzle are worn and the holding of the nozzle is uncertain. The component mounting accuracy becomes poor, and the urging force of the leaf spring must be increased in order to securely hold the nozzle. Therefore, it is difficult to engage with the concave portion of the suction nozzle and the leaf spring will be damaged if it is forcibly engaged. Sometimes.

(D) Means for Solving the Problems For this reason, the present invention is a collet exchange device for an electronic component mounting device that automatically exchanges a suction collet according to the type of electronic component. A mounting head having an openable claw for holding the collet by engaging with an engaging portion formed on the suction collet, and a spare suction collet. A suction collet to be stored, which has a contact member for abutting against the claw and opening the claw when the suction collet is to be exchanged and which is to be stored and which releases the engagement between the engaging portion and the claw. And a stocker provided with a holding member for holding the above-mentioned head and moving the mounting head away from the suction collet when moving relative to the mounting head.

(E) Operation With the above configuration, when the suction collet is replaced, the mounting head is positioned above the stocker, and then the head and the stocker are relatively moved so that the abutment member of the stocker comes into contact with the claw of the head. Opens the nail. Then, the suction collet mounted on the mounting head to be replaced is positioned in the stocker, the collet is held by the holding member, and the suction collet is removed from the mounting head.

Next, after moving the mounting head above the spare collet to be mounted on the mounting head, the head and the stocker are moved relatively to each other, and the pawl is opened again by the contact member to fit the mounting head. After fitting the mating part and the upper part of the collet and releasing the holding member, the claw is closed and the claw is engaged with the engaging part of the head, and then the head and the stocker are separated from each other.

(F) Example An example of the present invention will be described below with reference to the drawings.

FIG. 2 shows a main body (1) of the electronic component mounting apparatus, in which the main body (1) is a conveyer (2) that conveys a printed circuit board (including a thick film substrate) (P), a lead frame and the like, and the conveyer. Inversion device (3) provided on the upstream side in (2)
A pair of positioning devices (4) and (5) provided on the downstream side of the reversing device (3), and a suction collet exchange device (7) fixed on a mounting base (6) as shown in FIG.
(8), a wafer support (11) (12) having four wafer tables (9) (10) and movable in XY directions and rotatable in a plane direction, and suspended on a top plate (13). Mounting heads (14, 15) that are held and movable in the XY directions are provided. (See Figure 2).

The conveyor (2) has a pair of drive sprockets (16).
(16) consists of a pair of chains (18A) and (18B) stretched between the driven sprockets (17) and (17), and the printed circuit board (P) is placed on the chains (18A) and (18B). Transport from upstream to downstream. At this time, the chain (18A) (1
8B) is provided with an engaging piece (19) standing at a predetermined interval at the rear end of the substrate (P) in the feeding direction (see FIG. 4).
The board (P) is placed on both chains (18A) and (18B) and is intermittently conveyed from the upstream side to the downstream side while being locked by the engagement pieces (19).

The mutual intervals at which the engagement pieces (19) are provided are an integral multiple of the chain pitch, and all the substrates (P) that fit within this interval can be sent in common without any setup regarding the transfer operation. it can.

Next, the movement of the conveyor (2) and the movable chute (20A) will be described. The drive motor shown in FIGS. 2 and 3 (2
When (1) is energized, its drive is transmitted via the belt (23) and the output shaft of the index device (22) is driven intermittently, and the output shaft pulley (24) and pulley ( Since the spline shaft (27) rotates intermittently by the belt (26) stretched between the pulleys (28A) and (2),
Belts (30) (31) stretched between 8B) (29A) and (29B)
As a result, both drive sprockets (16, 16) rotate intermittently via the support shafts (32, 33). As a result, both sprockets (16), (16), (17) and (17) rotate, so that the printed circuit board (P) on the chains (18A) and (18B) is intermittently conveyed by a fixed distance.

On the other hand, the ball screws (36) (37) are fitted to the nut bodies (34) (35) provided at both ends of the movable chute (20A), and the belt (39) and pulley are driven by the drive motor (38) of FIG. When the screw bodies (36) and (37) rotate via the (40) and (41), the movable chute (20A) moves back and forth with respect to the fixed chute (20B). That is, both chutes (20A) corresponding to the width dimension of the substrate (P) in the direction orthogonal to the flow direction.
The distance between (20B) can be increased or decreased. At this time, the movable chute (20A) is moved along the spline shaft (27) by the spline bearing (42) shown in FIG.

Reference numeral (43) shown in FIG. 1 is a pair for detecting the presence of the engagement piece (19) located one pitch upstream from the positioning device (4) in the state where the feeding by the conveyor (2) is stopped. A sensor composed of optical means detects a positional deviation of the covener (2) which moves intermittently. That is, the chain (18A) stretches due to changes over time and the stop position of the engaging piece (19) shifts,
If the allowable range is exceeded, if the sensor (43) detects "none", the entire electronic component mounting device is stopped. In this case, the operator manually rotates the shaft of the index device (22) to correct the deviation amount.

The reversing device (3) is arranged at a lower position between the chains (18A) and (18B) on the upstream side of the conveyor (2) and reverses the flow direction of the substrate (P) as necessary. It is a thing. The reversing device (3) is provided with an XY table (46) which can be moved in the X and Y directions by an X-axis motor (44) and a Y-axis motor (45), and various other devices. It is composed of a mount (47) (see FIG. 2) provided on the XY table (46). A guide (48) shown in FIG. 2 is fixed to the mount (47) and vertically guides the upper and lower rods (49), and (50) is provided on the top of the upper and lower rods (49) to convey the conveyor (2). ) Is a push-up body that can project upward, (51) is a belt stretched between a pulley (52) provided on the lower portion of the upper and lower rods (49) and an output shaft pulley (54) of the motor (53), One end of (55) is rotatably connected to the operating rod of the cylinder (56), and the other end is 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. It is a rocking member.

Then, a plurality of suction paths (58) are formed at a predetermined interval in the push-up body (50) of the reversing device (3), and the vertical rod (4
A vacuum passage (59) communicating with the suction furnace (58) is formed in 9), and a rotary joint (6) is further provided in the passage (59).
0) and a tube (61) to communicate with a vacuum source (not shown).

A torque limiter (62) is provided between the output side of the index device (22) shown in FIG. 3 and the output shaft pulley (24), and an overload detection plate (63) is provided at the end thereof. There is. Therefore, when an abnormality occurs during conveyance of the printed circuit board and the detection plate (63) moves in the axial direction, the pair of optical sensors (64) can detect the overload condition. .

The brake members (65A) and (65B) shown in FIGS. 1 and 2 are provided inside so as to face the upstream end portions of the chutes (20A) and (20B), respectively. There are multiple suction ports (66) communicating with each other. A loader (67A) stores a plurality of printed circuit boards (P) on a shelf and can be moved up and down by an elevator (not shown) (68A).
A) and an extruding member (69) for extruding the lowest substrate (P) in the box (68A) onto the conveyors (18A) (18B). When the substrate (P) in the storage box (68A) is extruded from the extruding member (69), it does not transfer smoothly onto the conveyors (18A) (18B), and the conveyor (18A) (1A)
The brake members (65A) and (65B) are sucked by the brake members (65A) and (65B) so that they do not fall from 8B) so that they can be transferred reliably and stably. That is, the suction by the vacuum source is started when the pushing operation of the pushing member (69) is started, and the suction is released when the pushing operation is completed.

Next, the pair of substrate positioning devices (4) and (5) shown in FIGS. 1 and 2 will be described, but since both have the same configuration, only one (5) will be described. The positioning devices (4) and (5) perform positioning in the feed direction of the substrate (P), the width direction orthogonal thereto, and the thickness direction of the substrate (P), and will be described below.

The shaft rod (72) penetrating the pair of bearings (70) (71) shown in FIG. 2 has a width adjusting cam (7) from the left in FIGS. 1 and 2.
3), a lift cam (74) and a clamp cam (75) are provided, and the pulley (76) and the motor (7) at the left end of the shaft rod (72).
A belt (79) is stretched between the output shaft pulleys (78) of 7). Therefore, by energizing the motor (77), the shaft rod (72)
When is rotated, each cam (73) (74) (75) is rotated and each up-down member (86) (87) (88) is moved up and down via each cam follower (80) (81) (82). Along with this, the cam levers (89) (90) (91) (see FIGS. 2, 6, 11 to 14) also move up and down.

First, a device (92) for restricting and positioning the substrate (P) in the feed direction will be described with reference to FIG.

Reference numerals (93) and (94) are a reference clamp and a movable clamp which come into contact with the end of the substrate (P) in the flow direction, and each of them is a support shaft (95).
It can rotate around (96) as a fulcrum. And springs (97)
The reference clamp (93) is biased so as to rotate outward, and the movable clamp (94) is biased so as to rotate inward by a spring (98). (91) is a cam lever provided at the top of the upper and lower members (88) as described above, and engages with the pins (99) (100) protruding from the clamps (93) (94) to cause the clamp (93 ) Control the swing of (94).

On the other hand, a linear guide (10
1) allows the X table (102) to move horizontally, and a movable body (103) for rotatably supporting the movable clamp (94) is fixed to the table (102), and a drive source (Fig. A connecting body (106) integrated with a ball screw body (105) into which a rotating screw shaft (104) is fitted is fixed by a not-shown. (107) and (108) are bearings.

Therefore, as the screw shaft (104) is rotated by the drive source, the X table (102) moves in the flow direction via the connecting body (106), so that the movable body (103) also moves and the reference clamp (93) is moved. On the other hand, the movable clamp (94) can move far and near, and can cope with various lengths of the substrate (P) in the feed direction.

When the cam lever (91) moves upward, the movable clamp (9
4) rotates outward through the pin (100), the reference clamp (93) also rotates outward by the spring (97), and both clamps (93) (94) are below the substrate (P). Will be located in.

As described above, the upper and lower members (88) can move up and down via the guide (85) as shown in FIG. 6, and the pin (110) protruding from the fixed chute (20B) and the upper and lower members (88). A spring (112) is stretched between the protruding pin (111) and the upper and lower members (88). Therefore, since the cam follower (82) at the end of the upper and lower members (88) is in pressure contact with the clamp cam (75), the upper and lower members (88) move up and down according to the shape of the cam (75).

Next, the regulation in the width direction orthogonal to the feeding direction of the substrate (P) will be described. First, a fixed plate (115) is provided on an upper portion of the fixed chute (20B) (see FIGS. 10 to 12), and a movable bearing body (116) is arranged on the fixed plate (115) at a predetermined interval. And a reference bearing body (117). On the other hand, bearings (118) (11) provided on the movable chute (20A)
A plurality of width-shifting members (120) are attached to a support shaft (119) rotatably supported by 8), and the peripheral edge of the cylindrical portion rotatable by a shaft (not shown) can abut the substrate (P). Is. Then, one end of a spring (123) as an urging body is fixed to a mounting rod (122) supported between a pair of supporting portions (121) (121), and the width-shifting member (120) is respectively provided on the substrate (P). It is biased to rotate in the direction. Further, an engaging rod (126) is provided above the transmission arm (125) which is rotatable by a support shaft (124) supported between a pair of support portions (121) (121), and has the width of The pulling members (120) are operated to move away from the substrate (P). A cam follower (127) is provided at the other end of the transmission arm (125), and a cam lever associated with the vertical movement of a vertical member (86) having a cam follower (80) that engages with the width-shifting cam (73). The vertical movement of (89) causes the lever (89) to move the transmission arm (125) through the cam follower (127).
Will be rotated.

Next, the position of the component mounting surface on the board (P) is determined by
Regulating device (13 to keep it constant regardless of the thickness of
0) will be described with reference to FIGS. 13 and 14. The fixed chute (20B) and the movable chute (20A) are attached to the suction upper and lower members (87A) (8) by the linear guides (84) (84), respectively.
7A) can be moved up and down. Both shoots (20
B) Springs (133) (133) between the pins (131) (131) protruding from (20A) and the pins (132) (132) protruding below the upper and lower members (87A) (87A). Is stretched and the upper and lower members (8
7) (87) are urged upward respectively.

On the other hand, cam followers (134) (134) provided at the ends of the upper and lower members (87A) (87A) are pushed down by the cam lever (90). That is, as described above, the cam lever (90) is provided at the upper end of the upper and lower members (87) having the cam followers (81) that engage with the lift cam (74) shown in FIG. The suction upper and lower members (87
A) (87A) will move up and down respectively.

Further, reference numerals (135) and (135) denote substrate retainers provided on the tops of the chutes (20A) and (20B), and have engaging portions (136) and (136) engageable with the upper surface of the substrate (P). There is.

Further, as shown in FIG. 15, a plurality of suction holes (137) are formed in the suction part (138) on the upstream side of the suction upper and lower members (87A) (87A), and vacuum pipes (139) (139) are formed. ) Through a vacuum source (not shown). Therefore, the lower surface of the printed circuit board (P) can be sucked onto the upper and lower members (87A) (87A).

Moreover, the upper surfaces of the upper and lower members (87A) (87A) are set to a level slightly higher than the conveyor (2) conveying surface, and the upper and lower members (87A) (87A) are set by the engaging pieces (19) (19) of the chains (18A) (18B). The substrate (P) is transferred from the convey surface of the conveyor (2) to the upper and lower members (87A) (87A), and vacuum suction is started at that time. The suction is stopped when the conveyor (2) is stopped, but the printed circuit board (P) does not move due to the inertia when the conveyor (2) is stopped due to this suction. Therefore, without causing a large displacement,
Lifted up by the upper and lower members (87A) (87A),
The printed board (P) is pressed against the engaging portions (136) (136) of the board retainers (135) (135) while being positioned in the feeding direction and in the width direction orthogonal to the feeding direction.

Next, the wafer support (11) (12) will be described in detail.
Both have the same structure, and only the support base (11) will be described. Reference numeral (140) shown in FIG. 1 is an XY table, which is moved in the plane direction by the X-axis motor (141) and the Y-axis motor (142) along the X-axis direction guide (143) and the Y-axis direction guide (144). Can be moved. Further, the wafer table (9) placed on the XY table (140) can be rotated forward and backward by a drive source (not shown).

Therefore, the desired wafer sheet (146) is located above the push-up needle device (145). Since there are four wafer tables (9), at least one type and four types or less, for example, wafers of different sizes can be handled.

Next, one mounting head (14) will be described in detail. Second
The head (14) shown in FIG. 16 and FIG. 16 has a ball screw (151) supported by a support member (150) supported by a top plate (13).
The drive motor (154A) shown in FIG. 43 can move in the X direction, and the drive motor (154B) can move in the Y direction along the guide bodies (152) and (152). The output shaft pulley (15) of the drive motor (154C) disposed in the head body (153) shown in FIG.
A belt (158) is stretched between the pulley (157) at the end of the screw shaft (156) and the vertical moving body (159) is guided by the nut body (160) shown in FIG. 161) and can be moved up and down.

A pressurizing motor (162) and a lock solenoid (163) are fixed to the vertical moving body (159) as shown in FIG. 18, and a spring mounting pin (164) is attached to the output shaft of the motor (162). A lever (165) is provided. Plunger (166) of the solenoid (163) (see FIG. 17)
A mounting pin (167) is projected on the spring, and a spring A (170) is provided between the mounting pin (169) projected on the L-shaped support (168) fixed to the vertical moving body (159). Is stretched.

An oscillating body (173) is rotatable by a support shaft (172) on a bearing portion (171) of the up-and-down moving body (159).
Has a U-shaped groove cut out at the upper end thereof, and the mounting pin (167) is fitted in the groove, and a pressure bearing body (174) is provided at the other end of the rocking body (173). .

Reference numeral (175) shown in FIG. 16 is a solid bearing body for sandwiching the flange body (177) protruding from the rotary joint (176) with the pressure bearing body (174). It is provided at the end of the body (168). The oscillator (1
Mounting pin (178) protruding from 73) and pressurizing motor (162)
The pressure bearing body (174) is urged downward by a spring B (179) stretched between the lever (165) fixed to the output shaft of the lever and a mounting pin (164) protruding from the lever. . By controlling the rotation angle of the pressurizing motor (162), the pressing force of the pressurizing bearing body (174) on the rotary joint (176) and the fixed vane ring body (175) can be made variable. This spring B (179)
This is for applying a pressing pressure when mounting the pellets (180A) and (180B) on the substrate (P).

A balance spring C (183) is stretched between the mounting pin (181) of FIG. 17 projecting from the vertical moving body (159) and the mounting pin (182) projecting from the rotary joint (176). The spring B (183) and the suction nozzle body (18
This elastic force is set so that the self weights of 4) and the suction collet (185) are substantially equal to each other, thereby eliminating the influence of the self weight.

As shown in FIG. 16, a pin (186) is provided on the rotary joint (176) so that the joint (176) is rotated by a locking piece (187) fitted to the pin (186). Are prevented.

The suction nozzle body (184) is a rotary joint (176),
A vacuum source (not shown) is connected via a hose (190) (see FIGS. 17 and 19 (A)) and a vacuum switch (191) used for detecting the adsorption of large pellets (180B) (see FIG. 38). It is connected. The suction nozzle body (184) can move up and down in the vertical guide body (192) as shown in FIG. 16, but a chamfered portion (193) is formed on the upper part of the nozzle body (184). The upper and lower guide bodies (19
2) θ rotation is not possible. Vacuum switch (191)
Operates when the suction pressure of the vacuum source exceeds a certain value, and determines that the adsorption collet (185) does not adsorb the pellet.

A drive motor (195) is provided in the head body (153) as shown in FIG.
A belt (198) is stretched between the pulley (197) fixed around the upper and lower guides (192) (see FIG. 16) and the belt (198) is energized by the motor (195). The upper and lower guide bodies (192) rotate while being guided by the bearing body (199), and the suction nozzle body (184) also rotates by θ.

At the lower end of the suction nozzle body (184), a suction collet (18
As shown in FIG. 16, the lock mechanism (200) is detachably provided by locking and unlocking the lock mechanism (200).

Reference numeral (201) shown in FIGS. 19 (A) and 19 (B) is a DC solenoid mounted on the side surface of the head body (153), and an actuating lever (2) having an intermediate portion pivotally supported by the plunger (202).
03) is rotatably connected. Shown in Figure 8 (204)
Is a guide rail (20
5) is a vertical slider that can move up and down along with a pin (206) protruding from the slider (204) (19th (A),
A spring D (208) is stretched between the pin (207) projecting from the upper part of the head body (153) and urges the slider (204) upward.

And this slider (204) has a cam follower (2
10) is provided, the head body (153) is provided with an upper limit stopper (211) and a lower limit stopper (212), and the operating lever (203) is in contact with the cam follower (210). When (201) is excited, the actuating lever (203) rotates counterclockwise as shown by the solid line in Fig. 19 (A) to push down the slider (204) and the cam follower (210) contacts the stopper (212). When they come into contact with each other and demagnetize in the same manner, the operating lever (203) rotates clockwise as shown in FIG. 19 (B) and the spring D (208) rotates until the lever (203) contacts the upper limit stopper (211). Push up the slider (204).

Therefore, a photoelectric detection device (215), which is provided with a light emitting element (213) and a light receiving element (214) and is used for the adsorption detection of a thick pellet but a small pellet (180A) (see FIG. 36), is provided at the lower end portion. Therefore, the photoelectric detection device (215) is also moved up and down by moving the up and down sliders (204).

Therefore, when the detection device (215) is in the lower position, the adsorption collet (185) is adsorbed on the pellets (180A) (1).
The presence / absence state of the suction collet (185) itself can be detected when it is in the upper position.

Reference numerals (284A) and (284B) shown in FIG. 43 are holding type interlocking changeover switches, which can be arbitrarily changed by the user. (285)
Reference numeral (286) is an OR circuit and an AND circuit, respectively, which are connected to a microcomputer (287) which is a control device.
Therefore, when the changeover switches (284A) and (284B) are set as shown in FIG. 43, the vacuum switch (19
When either 1) or the photoelectric detection device (215) detects the pellet "absence", the pickup operation is repeated N times, which is set in advance in the pellet no-counter (not shown), and when it exceeds N times, The microcomputer (287) is connected to each motor (15) via the motor drive circuit (288).
4A) (154B) (154C) by controlling the vapor deposition head (14),
After returning (15), the operation of the mounting device is stopped, and at the same time, the notifying means (289) notifies the user by appealing to the visual or auditory sense of the indicator lamp, buzzer, etc. After that, the user confirms whether or not the pellet "absent" is true, and if not, adjust the operation level of the vacuum switch (191) or adjust the height position of the photoelectric detection device (215). You can go and try it once or restart it.

Further, when the changeover switches (284A) (284B) are switched, and when both the vacuum switch (191) and the photoelectric detection device (215) detect the “absence” of the pellet, the AND circuit (286) is used to operate the micro switch. -The computer (287) receives the detection output and controls as described above.

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

Explaining the suction collet (185), the lock function mounting portion (216) shown in FIGS. 20 and 21 is formed at the lower end of the nozzle body (184), and the mounting portion (216) is formed. The lock mechanism (200) is installed in the. A hollow mounting space (218) is formed in the mounting portion (216), and the adapter (219) of the suction collet (185) is fitted therein. Further, lock claw bodies (221) are respectively arranged between the bearing bodies (220) (220) on both sides of the mounting portion (216), and the support shaft (222) penetrates through these lock claw bodies (221). Are arranged so as to face each other and are urged by a spring (223) so that their lower ends approach each other. Reference numeral (224) is a positioning pin projectingly provided on the lower surface of the mounting portion (216), and can be fitted into a U-shaped groove (225) (see FIG. 23) described later.

As shown in FIG. 20, the suction collet (185) is fitted with an adapter (21) that fits into the mounting space (218) of the mounting portion (216).
9), an adapter flange portion (226) that comes into contact with the lower surface of the mounting body (216) when fitted and a suction portion that directly sucks the pellets (180A) (180B) at the bottom of the adapter (219). (227) and. The flange portion (22
At both sides of 6), a locking portion (228) whose lower portion is recessed inward is formed, and the lower end of the lock claw body (221) is at the locking portion (2).
28) I will enter and lock.

Next, the suction collet exchange devices (7) and (8) will be described. Since both of them have the same structure, only one (7) will be described with reference to FIGS. 1 and 22. The exchange device (7)
As shown in FIG. 22, the tool stocker (231) and the stocker base (232) can be roughly divided into a mounting plate (230) and vertically moved by a drive source (not shown), and a plurality of them are arranged at a predetermined interval. And a pin mount (234) having a lock release pin (233).

With the stocker (231) and the stocker stand (232),
The mounting holes (235) (236), which have substantially the same shape and are aligned with each other at a predetermined interval, are formed. Then, the two compliance pins (237) are loosely fitted in the holes formed in the stocker (231) and the stocker base (232),
The stocker (231) and the stocker stand (232) are formed by the head (238) and the coil spring (239) so that the steel ball (2) located in the groove formed on the upper surface of the stocker stand (232) is
29) (see Fig. 24). The ball (229) allows the stocker (231) to roll on the stocker table (232). The compliance pin (237) is accommodated in the center of the suction nozzle body (184) and the stocker (231) when attaching and detaching the suction collet (185) by making the diameter of the hole into which the pin (237) fits slightly larger. The center misalignment of the center of the adapter (219) of the sucked collet (185) can be absorbed.

The lock release pins (233) of the same length erected from the pin mount (234) shown in FIG.
1) and through the stocker stand (232).

Adsorption collet support bases (240) are erected on the front and rear portions of the peripheral edge of the upper surface side of the mounting hole (235) of the stocker (231), and positioning pins (241) (241) project from the suction collet support base (240).
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 length of the flange portion (226) still remains. U-shaped grooves (225) (225) are formed at the ends on the direction side, and the positioning pins (241) (241) are fitted in the grooves (225) (225), respectively, and the θ of the collet (185) is set. Prevent rotation (23rd
See figure).

The pin mount (234) is attached to the mounting plate (2) as shown in FIG.
A cylinder (242) attached to the 30) allows vertical movement while the shafts (244) (244) are guided by the guides (243) (243). As shown in FIGS. 23 and 24, (245) (2
Reference numeral 45) is a bearing body provided on the stocker base (232), and a shaft rod (246) to which a plurality of holding members (247) are fixed at a predetermined interval is rotatably provided on the bearing body (245). It is supported. The holding member (247) has a substantially crank shape, and one end of the holding member (247) engages with the adapter flange portion (226) from the upper surface. The other end of the holding member (247) serves as a rotation drive source. Cylinders (248) are connected.

The tool stocker (231) and stocker stand (23
2) The opening pitch of the mounting holes (235) (236), the opening pitch of the holes (not shown) where the lock release pin (233) fits, and the mounting pin of the lock release pin (233) All have the same pitch.

Next, the push-up needle device (145) will be described in detail with reference to FIGS. 1 and 33 to 35.

First, a gear (250) shown in FIG. 34 meshes with a gear (not shown) provided on the drive motor and its output shaft, and the gear (250) causes the rotation guide (251) and the rotation plate (25).
2) can be rotated 90 degrees forward and backward. (254) is Fig. 33, Fig. 35
With a base body that moves up and down by a cylinder (253) shown in the figure, the rotation guide (251) is rotatable while being guided by a rotation guide bearing (255) attached to the base body (254).

Then, the rotary plate (252) has first actuating levers (258) (259) and second guides that are movable along the first guide rails (256) (257) at positions different by 90 degrees. A second actuating lever (262) (263) movable along the rails (260) (261) is provided (see FIG. 33). The second actuating levers (262) (263) have guide bodies (264) (26
5) is provided. On the other hand, the guide body (264) corresponds to a small pellet (180A), the stage surface (266) has a small outer diameter, and the suction hole (267) has a small hole diameter (see FIG. 37). As shown in FIG. 36, the guide body (264) is formed with a guide passage (269) in the central portion for allowing the push-up needle (268) to move up and down, and four suction holes (267) are formed. 1 after connecting to each meeting room (270)
It communicates with a vacuum source through two communication passages (271) and a conduit (272).

The other guide body (265) corresponds to a large pellet (180B) as shown in Fig. 38, and the outer diameter of its stage surface (273) is larger than that of the stage surface (266), and the suction The diameter of the holes (274) is also larger than that of the adsorption holes (267) (see FIG. 39). The guide body has, for example, a guide passage (276) capable of vertically moving four push-up needles (275) and a support rod (27) for supporting the needles (275).
A guide passage (277) that allows the vertical movement of 6) is formed, and eight suction holes (274) are provided for each collecting chamber (2).
One communication passage (280) and conduit (281) after communicating with 79)
Through a vacuum source. Therefore, the total suction force of the guide body (265) is set to be larger than that of the guide body (264).

Then, as shown in FIGS. 33 to 35, coil springs (282) (283) are respectively wound around the lower portions of the push-up needle (268) and the support rod (277), and the first operating lever is wound. They are attached to (258) and (259) respectively. Therefore, by these springs (282) (283), both levers (258) (259),
(262) (263) are urged to separate.

33 and 35, reference numerals (290) and (291) are lower limit stoppers, which are the engaging portions (292) of the first operating levers (258) (259).
The lever (258) (259) is brought into contact with (293).
The lower limit of is determined. That is, the lower limit of the needles (268) (275) is determined.

Then, when the first operating levers (258) and (259) are respectively moved upward by the up-and-down rollers (294) described later, the springs (282) and (283) cause the second operating levers (262),
(263) also moves up, but upper limit stopper bolt (295)
When (296) contacts the upper limit stoppers (297) (298), the upward movement is restricted. 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).

(299) and (300) are push-down pins, and when the first operating levers (258) and (259) descend, the second operating levers (262) and (263) also descend.

On the other hand, a drive motor (301) is attached to the upper part of the base body (254) as shown in Fig. 34, and its output shaft pulley (3
A belt (305) is stretched between the 02) and the pulley (304) above the screw shaft (303). (306) is the screw shaft (30
3) is a support for supporting the screw shaft (303).
Is an upper and lower bar that fits and moves up and down by rotation of the screw shaft (303). The upper and lower bars (307) are loosely inserted in the hollow portion of the rotation guide (251), and the upper and lower rollers (2) at the ends of the bars (307) are attached.
Reference numeral 94) is for moving one of the first actuating levers (258) and (259) along with the upward movement of the bar (307) as described above.

33 and 35, (308) and (309) are rotary plate stoppers, which come into contact with the rotary plate (252), respectively.
The stop position of is ensured, and this stopper (30
A shock absorber is provided to alleviate the impact when the rotary plate (252) comes into contact with (8) and (309).

Then, as shown in FIG. 40, the guide bodies (264), (2
65) between the vacuum source and the first filter (310),
(311), switching valves (312), (313), and the switching valve (31
2), (313) and bifurcated throttle valves (314) (315), (316) (317), and second filters (318) (319), (320) connected in parallel between the vacuum source. (321) and valve (322)
(323), (324) and (325) are provided.

The vacuum pressure is adjusted by the two-pronged throttle valve (314) (315), (31
Valves (326) (32) open to one atmosphere of (6) (317)
7), (328) (329) determined by the degree of aperture.

The first filters (310) and (311) have suction holes (26
The dust sucked from 7) and (274) is removed, and the switching valves (312) and (313) and the bifurcated throttle valves (326) (327) and (32).
8) Protects (329) and the second filter (318), (31
9), (320), (321) are the two-pronged throttle valves (326) (32
The dust sucked from 7), (328) and (329) is removed to protect the valves (322) (323), (324) and (325), respectively.

The operation will be described below with the above configuration.

(I) Conveyor (2) width adjustment operation The movement operation of the movable chute (20A) with respect to the fixed chute (20B) is described below. In order to convey the printed circuit boards (P) of various sizes on the conveyor (2), first, the belt (39) and the pulleys (40) (41) are driven by the drive motor (38) shown in FIG. The ball screw bodies (36) and (37) are rotated through. Then the nut body (35) (3
6) moves back and forth with the movable chute (20A), but at this time the movable chute (20A) moves while being guided by the spline shaft (27). Therefore, the chain (18B) stretched between the sprockets (16) and (17) also moves, and the width of the printed board (P) in the direction orthogonal to the feeding direction can be accommodated.

(Ii) Conveyance operation of the printed circuit board (P) When the drive motor (21) shown in Fig. 2 is energized, the index device (22) operates via the belt (23), and its output shaft pulley (24). The drive sprocket (16) (16) is rotated via the support shafts (32) (33) by the belt (26) stretched between the pulley and the pulley (25). Therefore, the driven sprockets (17) (17) also rotate and the chains (18A) (18B)
The upper printed circuit board (P) is intermittently transported. At this time, as shown in FIG. 4, the printed circuit board (P) is intermittently conveyed in a state where its downstream end is engaged with each engaging piece (19).

The index device (22) prevents the dimensional error of the drive sprocket (16) during machining from causing variations in feed accuracy.
The sprocket (16) and the number of teeth of the pulley are determined so that one rotation of the sprocket (16) corresponds to one pitch for intermittent conveyance by indexing 1 .

Further, from the loader (67A) shown in FIG.
For bridging the printed circuit board (P) onto the (A) and (18B), first, the lowermost board (P) in the storage box (68A) is pushed to the extrusion member (6).
It is carried out by extruding according to 9). That is, the push-out member (69) operates so that the substrates (P) are located between the engaging pieces (19).

When the pushing member (69) pushes the substrate (P), the brake members (65A) (65B) move the substrate (P) through the suction ports (66) in synchronization with the start of the pushing operation. Since the brake is applied by vacuum, you can transfer onto the conveyor (18A) (18B) reliably and stably. After this transfer, 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 an overload occurs, the torque limiter (62) shown in FIG. 3 operates and the detection plate (63) moves axially. An overload state can be detected by the pair of optical sensors (64). At this time, the drive motor (21) is de-energized, and the user is notified of that fact by notifying means (not shown). Therefore, the user should remove the cause of the accident.

The printed circuit board (P) is conveyed in this way, but if the chain (18A) extends due to changes over time and the stop position of the engaging piece (19) deviates beyond the allowable range, When the sensor (43) shown in FIG. 1 detects the presence of the engagement piece (19) as not being shielded by the engagement piece (19) as "absence", the entire electronic component mounting apparatus is stopped. In this case, the operator manually rotates the shaft of the index device (22),
It suffices to correct the deviation amount and return it 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 is disconnected. The conveyance of (P) is stopped.

Then, the motor (77) shown in FIG. 2 is energized and the shaft rod (72) is rotated via the belt (79), so that each cam (7
3) (74) (75) also rotate, and the vertical members (86) (87) (88) move up and down via the cam followers (80) (81) (82) in accordance with the shape of the cam. It will be. This regulates the position of the printed circuit board (P) in the feed direction, the axial direction orthogonal to this feed direction, and the vertical direction orthogonal to these directions.

Position Restriction of Printed Circuit Board (P) in Feeding Direction Before the circuit board (P) reaches this positioning position, the cam lever (91) is in the raised position and is in the state shown in FIG.

Then, when the upper and lower members (88) shown in FIG. 6 are lowered against the spring (112) in accordance with the clamp cam (75) which is rotated by energization of the motor (77), the movable clamp (88) is moved by the spring (98). 94) resists the spring (97) and the reference clamp (9
3) respectively rotate to regulate the position of the printed circuit board (P) in the feeding direction.

That is, when the upper and lower members (88) descend along the guide (85), the movable clamp (94) rotates around the support shaft (96) as a fulcrum, and the reference clamp (93) rotates around the support shaft (95) as a fulcrum. .
Therefore, each clamp comes into contact with the upstream end face and the downstream end face of the substrate (P).

When the size of the printed circuit board (P) in the feed direction is changed, the screw shaft (104) shown in FIG. 7 is rotated by a drive source (not shown) before being placed on the chains (18A) and (18B). By doing. 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 table (102) has a movable clamp (94)
Since the movable body (103) supporting the is fixed, the movable clamp (94) can move away from or approach the reference clamp (93). As a result, even if the dimension of the printed circuit board (P) in the feeding direction changes, it can be dealt with.

Position regulation in the width direction orthogonal to the feed direction of the printed board (P) Before the board (P) reaches this positioning position, the up-down member (86) and the cam lever (89) are in the raised position,
The width-shifting member (120) is in the state shown in FIG. 11 against the spring (123).

Then, the upper and lower members (8) are fitted to the shape of the width-shifting cam (73) (see FIG. 2) which is rotated by energization of the motor (77).
6) descends. For this reason, the width adjusting member (120) is supported by the spring (123) with the support shaft (119) as a fulcrum, and the upper portion is the substrate (P).
Rotate to the side. By this rotation, the substrate (P) is sandwiched between the movable bearing body (116) (see FIG. 12). Therefore, the position of the board (P) in the width direction is restricted.

When the dimension of the printed circuit board (P) in the width direction orthogonal to the feeding direction is changed, the drive motor (3
The movable chute (20A) is moved by 8) and the relationship between the fixed chute (20B) and the movable chute (20B) is expanded or narrowed, so that these width-shifting members (120) are moved.

Vertical regulation of the printed board (P) Before the board (P) reaches this positioning position, the upper and lower members (87) and the cam lever (90) are in the lowered position as shown in FIG. The upper surfaces of the upper and lower members (87A) (87B) are at a slightly higher level than the upper surfaces of the chains (18A) (18B), and the board (P) causes the chains (18A) (18B) to engage the board (P) with the engaging pieces (19) of the chains (18A) (18B). From each upper and lower member (87A) (87
It is transferred to the upper surface of B) and adsorbed. Then, when the conveyor (2) is stopped, its adsorption is stopped, but the printed board (P) rarely moves due to the inertia when the conveyor (2) is stopped by this adsorption.

Then, when the upper and lower members (87) and the cam lever (90) are raised in conformity with the shape of the lift cam (74) which is rotated by energization of the motor (77), the printed circuit board (P) is moved by the springs (133) and (133). The upper and lower members (87A) (8
It is pushed up by 7A). Therefore, the board (P) is engaged with the engaging portions (13) of the board retainers (135) (135) in a state where the position of the board is regulated in the feeding direction and the width direction orthogonal to the feeding direction.
6) It comes into contact with the lower surface of (136) (see Fig. 14).

Therefore, the position of the component mounting surface on the board (P) can be made constant by the restricting device (130) without being influenced by the thickness of the board (P).

The above-mentioned position regulation of the board (P) is started at approximately the same time when the motor (77) is energized. However, position regulation in the feed direction, position regulation in the width direction orthogonal to this feed direction,
The order of position regulation in the vertical direction orthogonal to these directions ends.

(IV) Operation of Wafer Table (9), etc. Pellets are mounted on the printed circuit board (P) whose position is regulated as described above. Before this mounting, the desired wafer sheet (14
The wafer support base (11) is rotated in either forward or reverse directions by a drive source (not shown) so that 6) moves to the station (A) (see FIG. 1).

Next, the XY table (140) is moved along the guides (143) (144) by the X-axis motor (141) and the Y-axis motor (142).
Also, the support base (111) is moved in the plane direction so that the pellet (180A) on the desired wafer sheet (146) is located above the guide body (264) of the push-up needle device (145).

Then, the base body (254) is moved upward by the cylinder (253) shown in FIG. 33 to bring the guide body (264) close to the wafer sheet (146). Then drive motor (301)
Energize each pulley (302) (304) and belt (30
5) Rotate the screw shaft (303) via the upper and lower bars (307)
Raise. Then, since the bar (307) raises the first actuating lever (258), the spring (282) also raises the second lever (262), but the bolt (295) hits the upper limit stopper (297). This movement is limited because it touches.

However, since the first lever (258) further moves upward, the push-up needle (268) moves up. Therefore, as shown in FIG. 36, the sheet (146) adsorbed on the stage surface (266) is pushed up by the vacuum source through the conduit (272), the communication path (271) and the adsorption hole (267), and the sheet ( The pellet (180A) is peeled from the surface (146) so that the pellet (180A) is securely held by the suction head (4) and the suction portion (227) of the mounting head (4).

However, at this time, the push-up needle (268) does not push up from the lower limit stop position at once, but in order to synchronize with the rising timing of the suction collet (185) after the pellet suction, the upper end of the push-up needle (268) first moves to the stage. Surface (266)
Stand by at the same level as above, and rise with the appropriate timing signal to push up the seat (146) (36th
See figure). Adsorption collet (185) descending at this time
Even if the pellet (180A) is pinched with the lower end of the suction part (227) of the, the needle (268) further rises, so the mounting head (1
Even if the vertical moving body (159) of 4) is stopped, the suction nozzle body (184) is raised against the spring B (179) shown in FIG.

After that, the push-up needle (268) and the suction nozzle body (184) ascend together with the pellet (180A) sandwiched in synchronization. Then, after reaching the predetermined rise, only the nozzle body (184) rises, the needle (268) descends, and returns to the standby position.

After this adsorption, the rotation of the drive motor (301) is reversed, the upper and lower bars (307) are moved downward, and the first spring is moved by the spring (282).
The operating lever (258) is moved down to lower the needle (268), and when the upper and lower bars (307) are further moved downward, the second operating lever (262) is also moved down to push the needle device (145).
Becomes the initial state by descending by the cylinder (253).

When mounting a next large pellet (180B), the support base (11) is rotated so that the wafer sheet (146) is located at the station (A), and the XY table (140) and the support base (11) are rotated. Is moved in the plane direction to prepare for the next mounting operation. Further, the rotary plate (252) of the push-up needle device (145) is rotated by 90 degrees. That is, the drive motor (not shown) is energized, and the rotation guide (251) and the rotary plate (252) are rotated by the gear (250) meshing with the gear provided on the output shaft of the drive motor, and the rotation plate stopper (308) is contacted. The stop position is secured by contact (see Fig. 35).

Therefore, the guide body (265) for the large pellet (180B)
Will be located immediately below the wafer sheet (146).

As shown in FIG. 40, the pellet is placed on the wafer sheet (14
The vacuum pressure for adsorbing the wafer sheet (146) to the stage surface (266) can be changed when the wafer sheet (146) is peeled off. That is, in the case of a relatively small pellet (180A), by switching the switching valve (312), either of the two-pronged throttle valves (314) and (315) can be selected and suction can be performed at different vacuum pressures. In the case of a relatively large pellet (180B), by switching the switching valve (313), one of the bifurcated throttle valves (316) and (317) can be selected and suction can be performed at different vacuum pressures.

Therefore, two kinds of vacuum pressure can be selectively adjusted for each guide body (264), (265), and each wafer table (9) (10)
It is possible to deal with different types of upper wafers.

For example, when handling the above-mentioned small pellet (180A), the switching valve (312) is switched, the two-pronged throttle valve (314) is selected, and the valves (323), (324), and (325) are closed. , Open the valve (322). Then, the vacuum pressure becomes, for example, 250 mmHg. At this time, the suction holes (267) of the guide body (264)
Dust sucked in through is removed by the first filter (310), and the switching valve (312) and the bifurcated throttle valve (314) are protected. Furthermore, the dust sucked from the valve (326) of the bifurcated throttle valve (314) is removed by the second filter (318),
The valve (322) is protected. When handling pellets that are slightly larger than this pellet (180A), switch valve (312)
To change the vacuum pressure to, for example, 350 mmHg by selecting the bifurcated throttle valve (315).

Of course, when handling large pellets (180B), switch the switching valve (313) and select either the two-pronged throttle valve (328) or (329) to set the vacuum pressure to, for example, 300 mmHg or 400 mmHg. Can be set to.

(V) Pellet mounting operation The mounting head (14) has a drive motor (154A) shown in FIG.
16 can be moved in the X direction by the ball screw (151A) shown in FIG. 16 that is rotated by the guide body (152) by the ball screw (151B) that is rotated by the drive motor (154B).
It is possible to move in the Y direction along (152).

Therefore, the mounting head (14) is attached to the pellet (1) to be adsorbed on the wafer sheet (146) located at the station (A).
80A) and then the suction collet (1
The desired pellet (180A) can be adsorbed by lowering 85). This point will be described in detail below.

First, the drive motor (154C) shown in FIG. 17 is energized to rotate the screw shaft (156) via the pulleys (155), (157) and the belt (158), and the vertical moving body (159) is lowered. Let
Then, the pressurizing motor (162) shown in FIG. 16 causes the spring B (179) to press the pressurizing bearing body (174) against the rotary joint (176) and the fixed bearing body (175). The body (184) descends along the upper and lower guide bodies (192) to the wafer sheet (146).
For this reason, as described above, the needle (26
Combined with 8), the pellet (180A) can be securely adsorbed.

After this suction, the rotation of the motor (154C) is reversed and the vertical moving body (159) is raised by the screw shaft (156). After this rise, the lock solenoid (163) shown in FIG. Energize. For this reason, the swinging body (173) is rotated about the support shaft (172) as a fulcrum against the spring (170) by the sucked plunger (166). Therefore, the flange body (177) of the rotary joint (176) is sandwiched between the fixed bearing body (175) and the pressure bearing body (174) provided on the support body (168) fixed to the up-and-down moving body (159). Lock in the locked state (see Fig. 16). Of course, this locking action
This is performed during the horizontal movement of the mounting head (14), and if necessary after this locking operation, the suction nozzle body (184) is rotated by θ so that the direction of the pellet (180A) in the plane direction is mounted on the substrate (P). To match.

That is, when the driving motor (195) shown in FIG. 17 is energized, the suction nozzle body (192) and the restriction bearing (194) are used to feed the suction nozzle body (192) through the pulleys (196), (197) and the belt (198). 184) will rotate θ.

The suction nozzle body (184) moves to a position above the printed circuit board (P) in the position-regulated state as described above by the horizontal movement of the mounting head (14), and The 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) to the substrate (P). Demagnetize and release the lock operation.

At the time of this mounting, the pellet (180
A) will be pressed against the printed circuit board (P). Therefore, if you want to change the pressing force of, pressurizing motor (16
This can be done by setting the rotation angle in 2) to the desired value.

When the suction operation by the suction collet (185) starts a vacuum suction operation by a vacuum source (not shown),
The microcomputer (287) shown in FIG. 43, which controls all of the mounting devices, controls the vacuum switch (19).
1), the detection data from the photoelectric detection device (215) is taken in via the OR circuit (285) or the AND circuit (286). If the content of at least one of the detection data or both of the detection data depends on the state of the changeover switches (284A) and (284B), the pellet is “none”, the number of times N is set in advance in the pellet-less counter (not shown). , The pickup operation is repeated, and when the number of times exceeds N, the mounting head (14),
(15) is returned to the origin, the operation of the mounting device is stopped, and the user is notified by the notifying means (289) visually or audibly. Therefore, the user
Check if the pellet “none” is true, and if not, adjust the operating level of the vacuum switch (191),
The height position of the photoelectric detection device (215) is adjusted and the test operation is performed once or restarted to confirm whether the adjustment is appropriate. If it is not appropriate, readjust it, and if appropriate, continue normal operation.

The mounting heads (14) and (15) are the same as the chain (18A).
Since the engaging pieces (19) of (18B) are arranged at an interval that is an integral multiple of the interval of the engaging pieces (19), both heads can simultaneously perform the bonding operation in terms of timing.

(Vi) Replacement operation of the suction collet (185) The mounting operation is performed as described above. For example, when the next pellet to be mounted is a large pellet (180B), the suction collet (185) suitable for it Must be replaced. The exchange operation will be described below with reference to FIGS. 25 to 32.

First, as shown in FIG. 22, as described above, the suction nozzle body (18
4) and the suction collet (185) are lowered and moved to a position above the mounting hole (235) of the seal stocker (231) in which the suction collet of the suction collet exchange device (7) is not housed.

Next, by driving the cylinder (242), the pin mount (234)
And a seal stocker (231) by a drive source (not shown)
(See Fig. 25).

After that, when the nozzle body (184) and the collet (185) are further lowered, the lock claw bodies (221) and (221) come into contact with the lock release pin (233) and the support shafts (222) and (222). Rotate with the fulcrum as a fulcrum to open (see Fig. 26). For this reason, the lock is released, but the holding member (247) that has been rotated outward by the cylinder (248) is rotated inward by the driving of the cylinder (248), and the adapter flange portion is then rotated. Hold down (226).

Of course, at this time, the positioning pins (241) (241) on the support base (240) are fitted in the U-shaped groove (225) formed in the adapter flange portion (226), respectively, and the θ of the suction collet (185) is set. Rotation is prevented (see Figure 23).

Then, as shown in FIG. 27, when the stocker (231) is lowered by the drive source, the adapter (219) is pulled out from the mounting space (218). Next, the suction nozzle body (184) rises as described above, and the pin mount (234) and the lock release pin (233) descend (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)
The lock claws (221) (221) are opened by this (see FIG. 29).

And seal stocker (231) and stocker stand (23
2) rises (see FIG. 30), and the adapter (219) of the suction collet (185) is inserted 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) to prevent the θ deviation during the insertion. Then, by driving the cylinder (248) shown in FIG. 24,
Rotate the holding member (247) outward.

After that, since the release pin (233) is lowered, the lock claws (221) (221) are rotated inward by the springs (223) (223) and enter the locking portion (228) to be locked. (See Figure 31). Then, the suction nozzle body (184) and the suction collet (185) rise, and the pressing member (247).
Then, by rotating inwardly and lowering the stocker (231) and the stocker base (232), the exchange operation of the suction collet (185) is completed (see FIG. 32).

By exchanging the suction collet (185), it becomes possible to mount large pellets (180B).

Next, an operation of confirming whether or not the suction collet (185) is exchanged surely will be described.

First, as shown in FIG. 19 (A), when the DC solenoid (201) is excited, the actuating lever (203) resists the spring D (208) and the vertical slider () via the cam follower (210). 204) is pressed downward, and the follower (2
Since the lower limit stopper (212) is in contact with and locked by the lower limit stopper (212), the photoelectric detection device (215) is attached to the suction collet (1).
85) detects whether the pellets (180A) and (180B) (omitted for convenience) are adsorbed. However, in order to confirm whether or not the collet (185) has been replaced, the solenoid (201) may 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 (20
3) is brought into contact with and locked by the upper limit stopper (211), and the photoelectric detector (215) can confirm the existence of the suction collet (185) as shown in FIG. 19B. If there is no existence
When this is detected, the subsequent operation is stopped and the user is notified by a 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 re-energized to rotate the width-shifting cam (73), the lift cam (74) and the clamp cam (75), and the cam lever (91).
(89) is raised and the cam lever (90) is lowered, and the suction of the printed board (P) through the suction holes (137) of the suction upper and lower members (87A), 87A shown in FIG. 10 is stopped. The suction by the vacuum source is stopped, the atmospheric pressure is restored, and the motor (77) is de-energized to restore the initial state. After that, the drive motor (21) is energized to convey the printed circuit board (P) downstream by the chains (18A) and (18B).

(Vii) Reversing operation of the printed circuit board (P) In this way, the mounted printed circuit board (P) is transported to the downstream side, and as shown in FIG. 41, a storage box (68B) that can be moved up and down by an elevator (not shown). Sequentially stored in. This storage box (68B) is the storage box (68) for the loader (67A) described above.
It has exactly the same structure as A). Therefore, all of the printed circuit boards (P) in the storage box (68A) of the loader (67A) are stored in the storage box (68B) of the unloader (67B) after mounting.

Here, depending on the printed circuit board (P), a large number of pellets must be mounted, and in this case, it is necessary to mount them again on the chains (18A) and (18B) and mount them.
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 circuit board (P) is not stored are replaced,
Set them in the loader (67A) and unloader (67B), respectively.

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

As mentioned above, loader (67A) to chain (18A) (18
When the substrate (P) is placed on B) and is intermittently transported and reaches a position directly above the reversing device (3), the drive motor (21), which is the drive source for the transport, is stopped from energizing. 2. Drive the cylinder (56) shown in FIG. Then, the swinging member (55) rotates to move the upper and lower rods (49) upward by the guide (48), and at the same time, the tube (61), the vacuum passage (59) and the uplift of the upper and lower rods (49) by a vacuum source not shown. Body (50) suction path (5
The printed board (P) is suctioned and raised to the upper surface of the push-up body (50) via 8). After that, the motor (53)
Is energized to rotate the pusher body (50) by 180 degrees in the plane direction via the pulleys (54), (52) and the belt (51).

After that, the driving of the cylinder (56) is stopped, the swinging member (55) is returned to the initial state, and the push-up body (50) is lowered. At this time, since the suction by the vacuum source is released and the atmospheric pressure is restored, the printed circuit board (P) is connected to the chain (18A).
Placed on (18B), again drive motor for transportation (21)
The printed circuit board (P) which has been turned over 180 degrees is conveyed again, positioned as described above, and the desired pellets are mounted.

Therefore, the reference side at the time of positioning the printed circuit board (P) is the same side as that at the time of first carrying and positioning,
The mounting accuracy is improved.

When the printed board (P) having a changed width dimension orthogonal to the conveying direction is flowed, the X-axis motor (4
4), drive the Y-axis motor (45) to move the XY table (4
6) Move the chain and change its mutual spacing (1
This can be dealt with by moving the push-up body (50) to the exact intermediate position between 8A) and 18B.

(G) Effect of the Invention As described above, according to the present invention, when the suction collet mounted on the mounting head is detached and replaced according to the type of electronic component, the suction collet is engaged with the engaging portion of the collet to be replaced. After positioning the collet on the stocker with the engagement by the claws released, with the holding member holding the collet,
Since the mounting head and the stocker are separated from each other, the fitting between the mounting head and the collet can be reliably eliminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an electronic component mounting apparatus, FIG. 2 is a front view of the mounting apparatus as seen from the inside of a fixed chute in the depth direction, and FIG. 3 is a conveyance section of the mounting apparatus. FIG. 4 is a right side view, FIG. 4 is a partial front view of the chain (18A), FIG. 5 is a sectional view taken along the line XX ′ in FIG. 1, FIG. 6 is a sectional view taken along the line YY ′ in FIG. The figure shows the front view of the device (92) for regulating and positioning the feed direction.
FIG. 9 is a front view of the device (92) in a standby state, FIG. 9 is a front view showing a positioning state of a printed circuit board (P) having a long dimension in the feed direction by the device (92), and FIG. 10 is a positioning device. FIG. 11 is a plan view of (4), FIG. 11 is a sectional view taken along line ZZ ′ of FIG. 1, showing a state before positioning the printed board (P) in the width direction, and FIG. P) is a cross-sectional view of a main part showing a positioning state in the width direction, and FIG. 13 is a cross-sectional view of the main part showing a state before positioning by the regulating device (130) in the VV 'cross-sectional view of FIG. 1, FIG. Is also a regulating device (13
Fig. 15 is a partial plan view showing the positioning state according to (0), Fig. 15 is a partial plan view of a state in which a device for restricting the position in the width direction orthogonal to the substrate feeding direction is removed, and Fig. 16 is one of the mounting heads. Partial cross-sectional front view, FIG. 17 is a right side view in vertical section of the mounting head, FIG. 18 is a partially cutaway plan view of the mounting head, FIG. 19A
Fig. 19 is a right side view of the mounting head with a part cut away. Fig. 19B is a right side view of the mounting head with a vertical slider raised. 21 is a left side view of the lower end of the suction nozzle, FIG. 22 is a vertical sectional front view of the suction nozzle exchange device, FIG. 23 is a plan view of the exchange device, and FIG. 24 is a left side of the exchange device. FIGS. 25 to 32 are views showing the operation of exchanging the suction collet, FIG. 33 is a front view of the push-up needle device when handling small pellets, and FIG. 34 is a right side view of FIG. 33. 35
The figure shows the front view of the device when handling large pellets, No. 36
The illustration shows a vertical section of the push-up guide for small pellets,
Fig. 37 is a plan view of the guide, Fig. 38 is a vertical 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. 41.
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 operation explanatory view of the reversing device, and FIG. 43 is a block diagram relating to detection of whether or not the suction collet has adsorbed the pellets. Are shown respectively. (180A) (180B) …… Pellet, (185) …… Suction collet, (218) …… Mounting space, (219) …… Adapter,
(221) …… Lock claw body, (223) …… Spring, (228)…
... Locking part, (231) ... Stocker, (233) ... Lock release pin, (247) ... Push member.

Claims (1)

[Claims] 1. In a collet exchange device of an electronic component mounting device for automatically exchanging a suction collet according to the type of an electronic component, a fitting portion which detachably fits with an upper portion of the suction collet is formed. And a suction head having a claw that can be opened and closed to hold the collet by engaging with an engaging portion formed on the suction collet, and a spare suction collet for storing the suction collet. Has a contact member for releasing the engagement between the engaging portion and the claw by contacting the claw and opening the claw, and holding the suction collet to be replaced relative to the mounting head. A collet exchange device for an electronic component mounting device, comprising: a stocker having a holding member that separates the mounting head and the suction collet during movement.