JP6709295B2 - Parts mounting machine - Google Patents

Description

The present invention relates to a component mounting machine.

Patent Document 1 discloses a tray moving device that conveys trays from a stocker accommodating a plurality of trays to a supply position provided outside the stocker.

JP, 2006-86483, A

In the technique described in Patent Document 1 described above, since the tray is conveyed to the outside of the stocker by the belt conveyors provided inside and outside the stocker, the manufacturing cost increases. On the other hand, when trying to convey the tray from the inside of the stocker to the outside only by the belt conveyor provided outside the stocker, the tray cannot be conveyed to the supply position due to the friction between the part where the tray is placed and the tray. May be delayed, and the tray transfer efficiency may be reduced.

An object of the present invention is to provide a component mounting machine that can efficiently carry a tray.

A component mounting machine disclosed in the present specification conveys a tray placing part on which a tray on which components are arranged and a tray transferred from the tray placing part to a component supply position, and It is a component mounting machine provided with a tray transfer device for transferring the tray transferred from a supply position to the tray mounting part, and a control device for controlling the tray transfer device. The tray transfer device includes an endless transfer belt on which the tray transferred from the tray mounting section is placed, and a plurality of endless transfer belts rotatably supporting the transfer belt. And a belt driving device that drives the conveyor belt. In the normal operation, when the tray is not conveyed from the tray placing section to the component supply position in the normal operation, the control device performs, as a recovery operation, the relative height of the upper surface of the conveyor belt with respect to the upper surface of the tray placing section. The position is set higher than in the normal operation.

According to the component mounting machine disclosed in the present specification, when the tray is not conveyed from the tray placing part to the component supplying position, the control device performs the recovery operation to move the tray placing part to the component supplying position. Transport of the tray is prompted. Therefore, the component mounting machine can efficiently carry the tray.

It is a schematic diagram of the component mounting machine in one embodiment of the present invention. It is a figure which shows schematic structure of a tray raising/lowering apparatus. It is a perspective view of a supply tray (empty tray). It is a top view of a tray conveyance apparatus. It is the schematic which looked at the tray conveyance apparatus from the front, and shows the state in which the to-be-rotated roller exists in the same height position as the to-be-rotated shaft roller. It is a block diagram which shows a control apparatus. It is the schematic which looked at the tray conveyance apparatus from the front, and shows the state in which a to-be-rotated roller exists under a rotation axis roller. It is the schematic which expanded a part of tray conveyance apparatus seen from the front, and shows the state in which a to-be-rotated roller exists in the same height position as a rotation axis roller. It is the schematic which expanded a part of tray conveyance apparatus seen from the front, and shows the state in which a to-be-rotated roller exists in a position higher than a rotation axis roller.

(1. Configuration of component mounting machine 1)
Hereinafter, each embodiment to which the component mounting machine disclosed in this specification is applied will be described with reference to the drawings. First, an outline of the component mounting machine 1 will be described with reference to FIG. As shown in FIG. 1, the component mounting machine 1 mainly includes a substrate transfer device 10, a component transfer device 20, a tray elevating device 30, a tray transfer device 50, and a control device 100. In each drawing, the transport direction of the tray is the Y-axis direction (left-right direction in FIG. 1), the direction perpendicular to the Y-axis direction and the horizontal direction (vertical direction in FIG. 1) is the X-axis direction, the X-axis direction, and the Y-axis direction. The vertical direction (vertical direction in FIG. 1) orthogonal to is the Z-axis direction.

The board transfer device 10 carries the board K into the component mounting machine 1 and positions the board K at a predetermined position. In addition, the board transfer device 10 carries the board K out of the component mounter 1 after the mounting of the component P on the board K is completed.

The substrate transfer device 10 mainly includes a pair of guide rails 11, a pair of belt conveyors 12, and a clamp device 13. The pair of guide rails 11 are arranged parallel to the X-axis direction while being separated from each other by a distance substantially equal to the width of the substrate K. The pair of belt conveyors 12 are arranged directly below the pair of guide rails 11. The pair of guide rails 11 guide the substrate K in the X-axis direction, and the pair of belt conveyors 12 convey the substrate K to a predetermined position. The clamp device 13 is a device provided between the pair of guide rails 11. The clamp device 13 clamps, positions and fixes the substrate K transported to a predetermined position.

The component transfer device 20 collects the component P arranged at the component supply position Pp, and mounts the component P on the positioned substrate K. The component transfer device 20 includes a head drive device 21, a moving base 22, a mounting head 23, a plurality of suction nozzles 24, and a substrate camera 25. The head drive device 21 is configured to be able to move the moving table 22 in the X-axis direction and the Y-axis direction by a linear motion mechanism. The mounting head 23 is provided so as to be attachable to and detachable from the moving table 22.

The suction nozzle 24 is a nozzle capable of holding the component P by suction, and the plurality of suction nozzles 24 are detachably mounted on the mounting head 23. Each of the suction nozzles 24 is supported by the mounting head 23 so as to be rotatable about an axis parallel to the Z-axis and to be vertically movable in the Z-axis direction.

Further, between the component transfer device 20 and the tray transport device 50, a component camera 26 that images the component P suction-held by the suction nozzle 24 from below is provided. The control device 100 adjusts the direction of the component P sucked by the suction nozzle 24 by rotating the suction nozzle 24 as necessary based on the image pickup result picked up by the component camera 26.

The board camera 25 is an imaging device provided on the moving table 22. The board camera 25 takes an image of the positioning and fixed board K, and the control device 100 recognizes the mounting position of the component P on the board K based on the imaging result of the board camera 25.

The tray lifting device 30 mainly includes an upper housing 31, a lower housing 32, four columns 33, a supply tray mounting portion 34, and an empty tray table 35. Supply trays Tp on which parts P are arranged can be arranged in a stack in the upper housing 31, and empty trays Te after collecting the parts P can be arranged in a stack in the lower housing 32. Composed. The lower housing 32 is arranged below the upper housing 31, and the four columns 33 are erected at the four inner corners of the upper housing 31 and the lower housing 32 arranged vertically.

The supply tray mounting portion 34 is a rectangular plate-shaped portion on which one supply tray Tp taken out from the upper housing 31 is mounted, and inside the upper housing 31 along the support column 33 in the Z-axis direction. It is movably installed. It should be noted that the supply tray Tp is placed on the upper surface of the supply tray placing section 34 in a state in which a part thereof projects from the supply tray placing section 34 toward the tray transport device 50 side (right side in FIG. 1).

The empty tray table 35 is a rectangular plate-shaped portion on which the empty tray Te transferred from the tray transfer device 50 is placed, and is movable in the Z axis direction along the support column 33 inside the lower housing 32. It is provided.

As shown in FIG. 2, the tray lifting device 30 includes four supply tray holding portions 36, four rotation regulating portions 37, four rotation regulation releasing portions 38, six empty tray holding portions 39, and four empty tray holding portions 39. The apparatus further includes a supply tray holding release section 40 and six empty tray holding release sections 41.

The four supply tray holding portions 36 are attached to each of the four columns 33 so as to be rotatable about the axis parallel to the X-axis direction at the same height position. Two recesses d opening downward are formed on both side surfaces of the supply tray Tp parallel to the X-axis direction (see FIG. 3 ), and the supply tray holding portion 36 has a claw that can be inserted into the recess d. The part 36a is formed. The supply tray holding portion 36 holds the supply trays Tp stacked in the upper housing 31 by inserting the claw portions 36a into the respective recesses d.

The four rotation restricting portions 37 are members located above the respective supply tray holding portions 36, and are provided so as to be movable in the Z-axis direction along the columns 33. The rotation restricting unit 37 restricts the rotation of the supply tray holding unit 36 by contacting the supply tray holding unit 36 from above.

Two of the four rotation restriction releasing portions 38 are fixed to both side surfaces of the supply tray mounting portion 34 parallel to the X-axis direction. The rotation regulation releasing portion 38 rises as the supply tray placement portion 34 rises, and the rising rotation regulation releasing portion 38 comes into contact with the rotation regulation portion 37 from below to push up the rotation regulation portion 37. As a result, the contact state between the rotation regulation unit 37 and the supply tray holding unit 36 is released, and the rotation regulation of the supply tray holding unit 36 by the rotation regulation unit 37 is released.

The six empty tray holding parts 39 are provided on the lower surface side of the supply tray mounting part 34 and move up and down as the supply tray mounting part 34 moves up and down. The empty tray holding portion 39 is attached to both side surfaces parallel to the Y-axis direction so as to be rotatable about an axis parallel to the Y-axis direction. Further, each empty tray holding portion 39 is formed with a claw portion 39a capable of holding the empty tray Te. The empty tray holding unit 39 holds the empty tray Te by supporting the side surface of the empty tray Te parallel to the Y-axis direction from below with the six claws 39a.

The supply tray holding release section 40 is a member located below the supply tray holding section 36. The supply tray holding release section 40 is provided so as to be movable in the Z-axis direction along the support column 33, and is urged upward by a compression spring 40 a arranged below the supply tray hold releasing section 40. On the other hand, in the supply tray holding release section 40, a pin 40b protruding in the Y-axis direction is provided above the compression spring 40a. The pin 40b comes into contact with the lower surface of the rotation regulation releasing portion 38 fixed to the supply tray placing portion 34, and regulates the rise of the supply tray holding releasing portion 40 biased by the compression spring 40a.

When the supply tray placing section 34 moves up, the rotation restriction releasing section 38 and the supply tray holding releasing section 40 move up accordingly. Then, when the ascending supply tray holding release section 40 comes into contact with the supply tray holding section 36 from below, the supply tray holding section 36 rotates toward the outside of the upper housing 31. As a result, the state in which the claw portion 36a is inserted in the concave portion d of the supply tray Tp is released, and the holding of the supply tray Tp by the supply tray holding portion 36 is released. Along with this, the lowermost supply tray Tp held by the supply tray holding portion 36 is placed on the supply tray placing portion 34. After that, when the supply tray holding release section 40 descends, the claw portion 36a is inserted into the concave portion d of the supply tray Tp that was on the supply tray Tp held at the lowermost stage, and the supply tray holding section 36 causes the supply tray Tp. Returns to the state in which was held.

The empty tray holding release section 41 is fixed to the lower housing 32. An inclined surface 41a is formed on the upper surface of the empty tray holding release portion 41. When the empty tray holding part 39 descends as the supply tray placing part 34 descends, and the claw parts 39a of the empty tray holding part 39 contact the inclined surface 41a, the empty tray holding part 39 is placed outside the lower housing 32. Rotate towards. As a result, the holding of the empty tray Te by the empty tray holding portion 39 is released, and the empty tray Te is placed on the empty tray table 35.

As shown in FIGS. 4 and 5, the tray transfer device 50 transfers the supply tray Tp in the tray elevating device 30 to the component supply position Pp. Further, the tray transfer device 50 transfers the empty tray Te from the component supply position Pp to the empty tray holding portion 39 in the tray elevating device 30. The tray transfer device 50 mainly includes an apparatus main body 51, a plurality of transfer rollers 52, a pair of transfer belts 53, a belt drive device 54, a rotation motor 55, and a swivel connecting portion 56.

The device main body 51 is arranged between the component transfer device 20 and the tray elevating device 30 (see FIG. 1). The plurality of transport rollers 52 are rotatably supported by the apparatus main body 51 about a rotation axis parallel to the X-axis direction. The pair of conveyor belts 53 are endless belts wound around the plurality of conveyor rollers 52. The belt driving device 54 is a motor that applies a driving force for rotating the conveyor belt 53. The belt driving device 54 is integrally rotatably connected to a driving roller 52 a, which is one of the plurality of conveying rollers 52 and is arranged inside the conveying belt 53. The conveyor belt 53 is given rotational power by a drive roller 52a which is driven by a belt drive device 54 and rotates.

The rotary motor 55 is integrally rotatably connected to the rotary shaft member 52b1 of the rotary shaft roller 52b, which is one of the plurality of transport rollers 52 and is disposed inside the transport belt 53. The swivel connecting portion 56 is a long member that connects the two transport rollers 52 inside the transport belt 53 among the plurality of transport rollers 52. One end of the turning connecting portion 56 is connected to the rotary shaft member 52b1 of the turning shaft roller 52b. The other end of the swivel connecting portion 56 is connected to the rotary shaft member 52c1 of the swivel roller 52c arranged at a position separated from the swivel shaft roller 52b inside the transport belt 53. Therefore, when the rotation shaft roller 52b is driven by the rotation motor 55 to rotate, the rotation connection portion 56 and the rotated roller 52c rotate around the rotation shaft roller 52b.

As shown in FIG. 6, the control device 100 performs overall control of the operations of the substrate transfer device 10, the component transfer device 20, the tray elevating device 30, and the tray transfer device 50. The control device 100 includes a belt drive control unit 110, a turning control unit 120, a tray transport determination unit 130, and a recovery operation execution unit 140.

The belt drive control unit 110 sets the conveyance direction and the conveyance speed of the conveyance belt 53 by controlling the drive of the belt driving device 54. The turning control unit 120 controls the position of the turned roller 52c by controlling the driving of the rotation motor 55.

When the swivel roller 52c is swung until the rotary shaft member 52c1 of the swivel roller 52c becomes the same height as the rotary shaft member 52b1 of the swivel roller 52b, the swivel roller 52c comes closest to the tray elevating device 30. (See Figure 4). At this time, the swiveled roller 52c enters into the area where the supply tray Tp moves as the supply tray placing section 34 descends, and the portion of the conveyor belt 53 supported by the swiveled roller 52c descends. The tray Tp can come into contact with the lower surface of the tray.

On the other hand, when the swivel roller 52c is swung so that the rotary shaft member 52c1 of the swivel roller 52c is disposed below the rotary shaft member 52b1 of the swivel roller 52b, the swirl roller 52c is not moved to the supply tray mounting position. It retreats to a position outside the area where the supply tray Tp moves as the section 34 descends and the area where the empty tray Te moves as the empty tray holding section 39 descends (see FIG. 7 ).

The tray transport determination unit 130 determines whether or not the supply tray Tp transported from within the tray elevating device 30 has been transported to the component supply position Pp. Further, the tray transport determination unit 130 determines whether or not the empty tray Te transported from the component supply position Pp has been transported into the tray elevating device 30.

Here, the tray transfer device 50 is provided with a first sensor 57 capable of detecting the supply tray Tp at a position (on the right side in FIG. 5) closer to the component transfer device 20 than the transfer belt 53 in the device main body 51. The first sensor 57 is an end of the end of the supply tray Tp in the Y-axis direction that faces the tray transfer device 50 side (right side in FIG. 5) when the supply tray Tp is transferred to the component supply position Pp. The tray front end T1 is detected. When the first sensor 57 detects the supply tray Tp, the tray transfer determination unit 130 determines that the supply tray Tp has been transferred to the component supply position Pp.

Further, the tray lifting device 30 is provided with a second sensor 58 capable of detecting the empty tray Te. When the empty tray Te is transported from the tray transporting device 50 to the empty tray holding portion 39 in the tray lifting/lowering device 30, the second sensor 58 is the tray lifting/lowering device 30 among the end portions of the supply tray Tp in the Y-axis direction. The tray rear end T2, which is the end facing the side (left side in FIG. 5), is detected. When the second sensor 58 detects the empty tray Te, the tray transport determination unit 130 determines that the empty tray Te has been transported to the empty tray holding unit 39 in the tray elevating device 30.

When the recovery operation executing unit 140 conveys the supply tray Tp from the inside of the tray elevating device 30 to the component supply position Pp, the supply tray Tp moves the component supply position Pp within a predetermined time after starting the driving of the belt driving device 54. When the tray transport determination unit 130 does not determine that the sheet has been transported up to (the supply tray Tp is not detected by the first sensor 57), the recovery operation is performed. Furthermore, when the empty tray Te is conveyed from the component supply position Pp into the tray elevating device 30, the recovery operation executing unit 140 moves the empty tray Te up and down within a predetermined time after starting driving the belt driving device 54. When the tray transport determination unit 130 does not determine that the tray 30 has been transported to the device 30 (when the empty tray Te is not detected by the second sensor 58), the recovery operation is executed. The details of the recovery operation will be described later.

(2. Operation of tray transport device 50)
(2-1. Operation when the supply tray Tp is conveyed to the component supply position Pp)
Next, the operation of the tray transport device 50 will be described. First, the operation of the tray transfer device 50 when transferring the supply tray Tp in the tray elevating device 30 to the tray transfer device 50 will be described. As shown in FIG. 5, in transporting the supply tray Tp to the component supply position Pp, the turning control unit 120 determines that the rotation shaft member 52b1 of the rotation shaft roller 52b and the rotation shaft member 52c1 of the rotated roller 52c have the same height. The to-be-rotated roller 52c is rotated until it reaches the limit. Then, the tray elevating device 30 moves the supply tray placing section 34 to the lower limit position.

Here, when the supply tray mounting unit 34 moves to the lower limit position, the upper surface of the supply tray mounting unit 34 is located below the upper surface of the portion of the transport belt 53 supported by the turning shaft roller 52b. Then, the turning control unit 120 drives and controls the rotation motor 55 so that the rotation shaft member 52c1 of the rotated roller 52c and the rotation shaft member 52b1 of the rotation shaft roller 52b are at the same height position. As a result, in the conveyor belt 53, the upper surface of the portion supported by the rotated roller 52c (hereinafter referred to as "belt rotating portion 53a") and the upper surface of the portion supported by the rotating shaft roller 52b become horizontal, and the belt rotating portion is formed. The upper surface of 53a is located above the upper surface of the supply tray mounting portion 34.

As described above, when the supply tray placement unit 34 moves to the lower limit position, the supply tray Tp is in a state in which the tray front end T1 is lifted by the belt turning unit 53a. As a result, a part of the lower surface of the supply tray Tp floats up from the supply tray mounting part 34, and the contact area between the supply tray Tp and the supply tray mounting part 34 becomes small, so that the supply tray Tp and the supply tray mounting part 34. The friction generated between and can be reduced. Therefore, the component mounter 1 can facilitate the transfer of the supply tray Tp from the tray elevating device 30 to the tray transport device 50.

In this state, the belt drive controller 110 drives and controls the belt drive device 54 and rotates the drive roller 52a so that the conveyor belt 53 rotates in the clockwise direction shown in FIG. As a result, the supply tray Tp placed on the supply tray placing section 34 is pulled by the conveyor belt 53 and transferred to the tray transfer device 50.

The supply tray Tp transferred to the tray transfer device 50 is transferred by the rotating transfer belt 53. Then, when the tray front end portion T1 of the supply tray Tp is detected by the first sensor 57, the tray transport determination unit 130 determines that the supply tray Tp has been transported to the component supply position Pp, and the belt drive control unit 110 The driving of the belt driving device 54 is stopped.

(2-2. Operation when transporting empty tray Te into tray elevating device 30)
Next, the operation of the tray transfer device 50 when transferring the empty tray Te from the component supply position Pp into the tray elevating device 30 will be described. In transferring the empty tray Te into the tray elevating/lowering device 30, the tray elevating/lowering device 30 places the empty tray Te at a position at which the empty tray Te can be placed at the same height position as the supply tray Tp when the supply tray Tp is transported. Move 39.

The tray transfer device 50 controls the drive of the belt drive device 54 so that the transfer belt 53 rotates counterclockwise as shown in FIG. 5, and transfers the empty tray Te from the component supply position Pp to the tray elevating device 30 side. To do. Since the upper surface of the belt revolving portion 53a is located above the upper surface of the supply tray placing portion 34 as in the case of transporting the supply tray Tp, the tray rear end portion T2 of the empty tray Te becomes the empty tray holding portion 39. When placed, the tray front end T1 is lifted above the tray rear end T2. As a result, the contact area between the empty tray Te and the empty tray holding portion 39 can be reduced, so that the friction generated between the supply tray Tp and the supply tray mounting portion 34 can be reduced. Therefore, the tray transfer device 50 can easily transfer the empty tray Te from the tray transfer device 50 into the tray elevating device 30.

Then, when the empty tray Te is detected by the second sensor 58, the tray transport determination unit 130 determines that the empty tray Te has been transported into the tray elevating device 30, and the belt drive control unit 110 causes the belt drive device 54. Stop driving.

(2-3: Operation when lowering the empty tray holding portion 39)
Next, the operation of the tray transport device 50 when lowering the empty tray holding portion 39 will be described. The control device 100 determines that the empty tray Te is held by the empty tray holding unit 39 when the tray transport determination unit 130 determines that the empty tray Te has been transported into the tray elevating device 30. Then, the control device 100 moves the empty tray Te to the empty tray table 35 by lowering the empty tray holding portion 39.

Here, when the transfer of the empty tray Te from the tray transport device 50 to the tray elevating device 30 is completed, the belt turning portion 53a is in contact with the lower surface of the empty tray Te (see FIG. 5). Therefore, even if the empty tray holding portion 39 is lowered in this state, the empty tray Te interferes with the belt swiveling portion 53a, which hinders the movement of the empty tray Te to the empty tray table 35.

Therefore, as shown in FIG. 7, the turning control unit 120 drives the rotation motor 55 when the tray transport determination unit 130 determines that the empty tray Te has been transported to the empty tray holding unit 39 in the tray elevating device 30. It controls and the to-be-rotated roller 52c is moved below the orbiting shaft roller 52b. As a result, the swiveled roller 52c retracts to a position where interference with the empty tray Te can be avoided, so that the empty tray Te can be lowered.

(2-4. Recovery operation)
Next, the recovery operation executed by the recovery operation execution unit 140 will be described. As described above, as the normal operation when the supply tray Tp is conveyed from the supply tray placement unit 34 to the tray transfer device 50, the turning control unit 120 causes the rotation shaft member 52c1 of the rotated roller 52c to rotate the rotation shaft roller 52b. The swivel roller 52c is swung so that it has the same height as the rotating shaft member 52b1. At this time, the belt turning portion 53a is made higher than the upper surface of the supply tray mounting portion 34 to reduce the contact area between the supply tray Tp and the supply tray mounting portion 34, and the supply tray Tp and the supply tray mounting portion. It is intended to reduce the friction that occurs between the motor and the vehicle.

However, as shown in FIG. 8, when the supply tray Tp is deformed so as to be convex toward the lower surface side, the supply tray Tp floats above the upper surface of the supply tray mounting portion 34, which is a flat surface. In some cases, it cannot be done. In this case, the contact area between the supply tray Tp and the supply tray placing section 34 cannot be made sufficiently small, and the transfer of the supply tray Tp may be delayed due to the friction with the supply tray placing section 34. . Therefore, the control device 100 executes the recovery operation when the supply tray Tp is not conveyed to the component supply position within a predetermined time after the rotation of the drive roller 52a by the belt drive device 54 is started.

That is, the turning control unit 120 turns the rotating shaft member 52c1 of the turned roller 52c in the clockwise direction shown in FIG. 8 as compared with the normal operation as the recovery operation. As a result, as shown in FIG. 9, the upper surface of the belt revolving portion 53a is higher than the upper surface of the portion of the conveyor belt 53 supported by the revolving shaft roller 52b. As a result, the tray transporting device 50 can make the height difference between the upper surface of the supply tray placing portion 34 and the upper surface of the belt swiveling portion 53a larger than that during normal operation, so that the tray conveying device 50 becomes convex toward the lower surface side. Even when the supply tray Tp is significantly deformed, the supply tray Tp can be easily made to float from the supply tray mounting portion 34.

As described above, when the recovery operation executing unit 140 determines that the transfer of the supply tray Tp is delayed, the recovery operation executing unit 140 executes the recovery operation to thereby supply the supply tray Tp from the supply tray placing unit 34 to the tray transport device 50. Can be promoted. Therefore, the component mounting machine 1 can efficiently carry the feed tray Tp by the tray carrying device 50.

Similarly, when the empty tray Te has not been conveyed into the tray elevating device 30 within a predetermined time after the belt driving device 54 starts rotating the driving roller 52a, the control device 100 executes the shaking recovery operation. To do. In this way, the tray transfer device 50 is operated when the transfer of the empty tray Te from the tray transfer device 50 into the tray elevating device 30 is delayed. Since the recovery operation is executed, it is possible to promote the transfer of the empty tray Te from the tray transport device 50 into the tray elevating device 30.

Here, in the process of transferring the supply tray Tp from the supply tray placing section 34 to the tray transport device 50, the tray rear end T2 of the supply tray Tp pulled up by the conveyor belt 53 floats up from the supply tray placing section 34. .. Therefore, if the height difference between the swiveled roller 52c and the swivel shaft roller 52b is made too large, the tray rear end T2 of the supply tray Tp jumps up greatly, and the parts P arranged in the supply tray Tp easily jump. Become.

In that respect, it is desirable that the height dimension when the height position of the conveyor belt 53 is set higher than the upper surface of the supply tray mounting portion 34 as the recovery operation is equal to or smaller than the thickness dimension of the supply tray Tp. As a result, the tray transport device 50 prevents the parts P arranged on the supply tray Tp from bouncing when the tray rear end portion T2 of the supply tray Tp floats up from the supply tray placing portion 34, and at the same time, the supply tray Tp. Can be promoted.

Further, the turning control unit 120 arranges the turned rollers 52c such that the upper surface of the belt turning unit 53a is horizontal with the upper surface of the portion supported by the turning shaft roller 52b during the normal operation. As a result, in the component mounting machine 1 during normal operation, the tray rear end T2 of the supply tray Tp floats up from the supply tray placing part 34 in the process of transferring the tray from the supply tray placing part 34 to the component supply position Pp. At this time, the parts P arranged on the supply tray Tp can be prevented from bouncing.

Further, the recovery operation is performed by utilizing the turning operation of the transport belt 53 performed when avoiding the interference between the transport belt 53 and the empty tray Te. Therefore, since it is not necessary to separately provide a component for performing the recovery operation, the component mounting machine 1 can suppress the manufacturing cost of the tray transport device 50.

Further, when performing the recovery operation, the belt driving device 54 makes the conveyance speed of the conveyance belt 53 lower than that in the normal operation. As a result, the tray rear end portion T2 of the supply tray Tp is vigorously pushed from the supply tray mounting portion 34 in the process of transferring the supply tray Tp from the supply tray mounting portion 34 to the tray transport device 50 and transporting it to the component supply position Pp. You can prevent it from rising. Therefore, the tray transport device 50 can suppress the components P arranged on the supply tray Tp from bouncing during the recovery operation.

Then, the control device 100 reduces the transport speed of the transport belt 53 as a recovery operation when the supply tray Tp is not transported to the component supply position within the predetermined time. Therefore, as compared with the case where the transport speed of the transport belt 53 is set to the same speed (low speed) as the recovery operation in the normal operation, the time required to transport the supply tray Tp to the component supply position Pp in the normal operation. Can be shortened.

(3. Other)
Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment, and various modifications and improvements can be easily made without departing from the spirit of the present invention. Can be inferred.

For example, in the above-described embodiment, the supply tray Tp is mounted on the supply tray mounting portion 34 in a state of protruding from the supply tray mounting portion 34 to the tray transport device 50 side, and the belt rotation is performed on the lower surface of the protruding portion. The case where the portions 53a are brought into contact with each other has been described as an example. However, the present invention is not limited to this, and for example, a notch for avoiding interference with the upper surface of the belt turning portion 53a is provided in the supply tray mounting portion 34, and the belt turning portion is provided at the position where the notch is provided. The 53a may contact the lower surfaces of the supply tray Tp and the empty tray Te.

In the above-described embodiment, the control device 100 raises the height position of the belt swivel portion 53a higher than that in the normal operation as the recovery operation, so that the height difference between the belt swivel portion 53a and the upper surface of the supply tray placement portion 34 is increased. The case where the value is increased has been described. However, the present invention is not limited to this, and the component mounting machine 1 raises the relative height position of the belt turning portion 53 a with respect to the upper surface of the supply tray mounting portion 34 by lowering the supply tray mounting portion 34. Good.

(4. Effect)
As described above, in the component mounting machine 1 disclosed in the present specification, the supply tray mounting unit 34 as the tray mounting unit on which the supply tray Tp as the tray on which the components P are arranged is mounted, and the tray. A tray transfer device 50 that transfers the tray transferred from the mounting part to the component supply position, and transfers the tray transferred from the component supply position to the tray mounting part, and a control device 100 that controls the tray transfer device 50. It is the component mounting machine 1 provided with. The tray transfer device 50 includes an endless transfer belt 53 on which the tray transferred from the tray mounting portion is placed, and a plurality of endless transfer belts 53 arranged inside the transfer belt 53 and rotatably supporting the transfer belt 53. A conveyor roller 52 and a belt driving device 54 that drives the conveyor belt 53 are provided. In the normal operation, when the tray is not conveyed from the tray placing section to the component supply position in the normal operation, the controller 100 normally sets the relative height position of the upper surface of the conveyor belt 53 to the upper surface of the tray placing section as the recovery operation. Make it higher than during operation.

According to this component mounting machine 1, when the tray is not conveyed from the tray placing part to the component supplying position, the control device 100 performs the recovery operation, so that the tray placing part moves from the tray placing part to the component supplying position. Transport is encouraged. Therefore, the component mounting machine 1 can efficiently carry the tray.

In the component mounting machine 1 described above, the height dimension when raising the relative height position of the conveyor belt 53 with respect to the tray mounting portion as the recovery operation is not more than the thickness dimension of the tray. According to this component mounter 1, it is possible to prevent the relative height position of the upper surface of the conveyor belt 53 from the upper surface of the tray mounting portion from becoming too large when performing the recovery operation. As a result, it is possible to prevent the parts P arranged on the tray from bouncing when the tray is transferred from the tray placing part to the part supply position.

In the component mounting machine 1 described above, the tray transfer device 50 is one of the plurality of transfer rollers 52 and is arranged at a position where it can be contacted from the bottom surface with respect to the tray placed on the tray placing part. The rotated roller 52c, a rotation motor 55 that is provided at a position separated from the rotated roller 52c, and applies a rotational driving force around a rotation axis parallel to the rotation axis of the rotated roller 52c, and the rotation roller 52c. And a swivel connection portion 56 that connects the rotation motor 55. When performing the recovery operation, the control device 100 drives the rotation motor 55 to rotate the swivel roller 52c, so that the height position of the portion of the transport belt 53 supported by the swivel roller 52c is normally set. Make it higher than during operation.

According to this component mounter 1, the tray transport device 50 makes the height position of the portion of the transport belt 53 supported by the swivel roller 52c higher when performing the recovery operation than in the normal operation. .. Therefore, since the tray is urged to be conveyed from the tray placing section to the component supply position, the component mounting machine 1 can efficiently convey the tray.

In the component mounting machine 1 described above, the component mounting machine 1 includes a tray elevating device 30 that elevates and lowers the tray mounting portion. The tray transport device 50 includes one of the plurality of transport rollers 52, and a swivel shaft roller 52b arranged coaxially with the rotation axis of the rotary motor 55. The control device 100 causes the swivel roller 52c to swivel when the tray mounting portion is moved up and down and arranged below the swivel shaft roller 52b, so that the swivel roller 52c is retracted to a position where interference with the tray can be avoided. .

According to this component mounting machine 1, the control device 100 can be arranged below the swivel shaft roller 52b to prevent the swiveled roller 52c from interfering with the tray when the tray mounting portion is moved up and down. Further, the recovery operation is performed by utilizing the turning operation of the transport belt 53 performed when avoiding the interference between the transport belt 53 and the empty tray Te. Therefore, since it is not necessary to separately provide a component for performing the recovery operation, the component mounting machine 1 can suppress the manufacturing cost of the tray transport device 50.

In the component mounting machine 1 described above, the turning shaft roller 52b is provided such that the upper surface of the portion of the transport belt 53 supported by the turning shaft roller 52b is higher than the upper surface of the tray mounting portion. The controller 100 controls the swivel roller 52c so that the upper surface of the portion of the transport belt 53 supported by the swivel roller 52c is horizontal to the upper surface of the portion of the transport belt 53 supported by the swivel roller 52b during normal operation. Deploy. According to this component mounting machine 1, it is possible to prevent the components P arranged on the tray from bouncing when the tray is transferred from the tray mounting portion to the component supply position during normal operation.

In the component mounting machine 1 described above, when performing the recovery operation, the control device 100 makes the transport speed of the transport belt 53 by the belt drive device 54 slower than in the normal operation. Therefore, in the recovery operation, it is possible to prevent the parts P arranged on the tray from bouncing when the tray is transferred from the tray placing part to the part supply position. Further, the control device 100 reduces the transport speed of the transport belt 53 as a recovery operation when the supply tray Tp is not transported to the component supply position within the predetermined time. Therefore, compared with the case where the transport speed of the transport belt 53 in the normal operation is set to the same speed (low speed) as in the recovery operation, the time required to transport the supply tray Tp to the component supply position in the normal operation is reduced. It can be shortened.

The component mounter 1 described above includes the first sensor 57 that detects that the tray has been conveyed from the tray placing section to the component supply position. The control device 100 recovers when the first sensor 57 does not detect that the tray has been transported to the component supply position within a predetermined time after the transport from the tray mounting unit to the component supply position is started. Perform an action.

According to this component mounter 1, the control device 100 can determine whether the tray has been transported to the component supply position, and if the tray has not been transported to the component supply position within a predetermined time, recovery is performed. Perform an action. Therefore, the component mounting machine 1 can efficiently carry the tray.

In the component mounting machine 1 described above, the control device 100 performs the recovery operation when the empty tray Te as the tray is not conveyed from the component supply position to the empty tray holding portion 39 as the tray mounting portion in the normal operation. The relative height position of the upper surface of the conveyor belt 53 with respect to the upper surface of the empty tray holding portion 39 as the tray mounting portion is set higher than that in the normal operation.

According to this component mounting machine 1, when the tray is not conveyed from the component supply position to the tray mounting part, the control device 100 performs the recovery operation, so that the tray from the component supply position to the tray mounting part is moved. Transport is encouraged. Therefore, the component mounting machine 1 can efficiently carry the tray.

The component mounter 1 described above includes the second sensor 58 that detects that the tray has been transported from the component supply position to the tray mounting portion. The control device 100 recovers when the second sensor does not detect that the tray has been conveyed to the tray placing part within a predetermined time after the conveyance from the component supply position to the tray placing part is started. Perform an action.

According to this component mounting machine 1, the control device 100 can determine whether or not the tray has been conveyed to the tray placing section, and when the tray has not been conveyed to the tray placing section within a predetermined time. , Execute recovery operation. Therefore, the component mounting machine 1 can efficiently carry the tray.

1: Component mounting machine, 30: Tray lifting device, 34: Supply tray mounting part (tray mounting part), 39: Empty tray holding part (tray mounting part), 50: Tray transport device, 52: Conveyor roller, 52b: swivel shaft roller, 52c: swivel roller, 53: transport belt, 53a: belt swivel part (portion of transport belt supported by swivel roller), 54: belt drive device, 55: rotary motor, 56: Swiveling connection part, 57: first sensor, 58: second sensor, 100: control device, P: component, Pp: component supply position, Te: empty tray (tray), Tp: supply tray (tray)

Claims (9)

A tray mounting part on which a tray on which parts are arranged is mounted,
A tray transfer device that transfers the tray transferred from the tray mounting part to a component supply position and transfers the tray transferred from the component supply position to the tray mounting part;
A control device that controls the tray transport device;
A component mounting machine equipped with
The tray transfer device is
An endless conveyor belt on which the tray transferred from the tray placing section is placed on the upper surface,
A plurality of transport rollers disposed inside the transport belt and rotatably supporting the transport belt;
A belt driving device for driving the conveyor belt,
Equipped with
In the normal operation, when the tray is not conveyed from the tray placing section to the component supply position in the normal operation, the control device performs, as a recovery operation, the relative height of the upper surface of the conveyor belt with respect to the upper surface of the tray placing section. A component mounting machine that raises the height position from that in the normal operation. The component mounting machine according to claim 1, wherein a height dimension when raising a relative height position of the conveyor belt with respect to the tray mounting portion as the recovery operation is equal to or less than a thickness dimension of the tray. .. The tray transfer device is
One of the plurality of transport rollers, which is a swivel roller arranged at a position where it can come into contact with the tray mounted on the tray mounting portion from a lower surface,
A rotary motor which is provided at a position separated from the swivel roller and applies a rotational driving force about a rotation axis parallel to the rotation axis of the swivel roller;
A swivel connecting portion that connects the swivel roller and the rotation motor,
Equipped with
The control device, when performing the recovery operation, drives the rotation motor to rotate the swivel roller, thereby determining a height position of a portion of the transport belt supported by the swivel roller, The component mounting machine according to claim 1, wherein the component mounting machine is configured to have a height higher than that during the normal operation. The component mounting machine includes a tray lifting device that lifts and lowers the tray mounting portion,
The tray transfer device is
One of the plurality of transport rollers, comprising a rotary shaft roller arranged coaxially with a rotation axis of the rotary motor,
The control device causes the swivel roller to swivel to a position where interference with the tray can be avoided by swiveling the swivel roller and arranging the swivel roller below the swivel shaft roller when the tray mounting portion is moved up and down. The component mounting machine according to claim 3, which is retracted. The swivel shaft roller is provided such that an upper surface of a portion of the transport belt supported by the swivel shaft roller is higher than an upper surface of the tray mounting portion.
In the normal operation, the control device sets the swivel roller such that the upper surface of the portion of the transport belt supported by the swivel roller is horizontal to the upper surface of the portion supported by the swivel roller. The component mounting machine according to claim 4, wherein the component mounting machine is arranged. The component mounting machine according to claim 1, wherein the control device, when performing the recovery operation, makes the transport speed of the transport belt by the belt drive device slower than during the normal operation. . The component mounting machine is
A first sensor for detecting that the tray has been transported from the tray mounting portion to the component supply position,
The control device does not detect that the tray has been transported to the component supply position within a predetermined time after the transport from the tray mounting unit to the component supply position is started by the first sensor. The component mounting machine according to any one of claims 1 to 6, wherein the recovery operation is executed in such a case. In the normal operation, when the tray is not transported from the component supply position to the tray mounting portion in the normal operation, the control device performs the recovery operation such that the upper surface of the transport belt is relative to the upper surface of the tray mounting portion. The component mounting machine according to any one of claims 1 to 7, wherein a height position is set higher than that in the normal operation. The component mounting machine is
A second sensor for detecting that the tray has been transported from the component supply position to the tray mounting portion,
The controller does not detect that the tray has been conveyed to the tray placing section within a predetermined time after the conveyance from the component supply position to the tray placing section is started by the second sensor. 9. The component mounting machine according to claim 8, wherein the recovery operation is executed in the event of a failure.

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