JP6636754B2 - Tray feeding device - Google Patents

Description

  The present invention relates to a tray supply device.

  Patent Literature 1 discloses a supply container that holds a plurality of trays on which components are placed in a stack, and a collection device that is arranged below the supply container and holds a plurality of empty trays from which components are collected in a stack. A conveyor mechanism that is arranged between the container and the supply container and the collection container and conveys the tray, and supplies the tray on which the parts are placed from the supply container to the conveyor mechanism, or an empty tray from the conveyor mechanism to the collection container. A feeding device (tray feeding device) including a feeding mechanism for feeding is described.

U.S. Pat. No. 6,283,703

In the above-described transport device, a supply mechanism for transferring the tray between the supply container or the collection container and the conveyor mechanism is required, and there is a problem that the size of the device is increased.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tray supply device having a simple structure.

In order to solve the above problems, a tray supply device of the present invention includes a supply tray holding device capable of holding a plurality of trays on which components are placed as a supply tray in a stacking manner, and a tray supply device disposed below the supply tray holding device. A plurality of trays, which are empty after collecting the components at a component collecting position horizontally separated by a predetermined distance from a tray transfer port provided between the supply tray holding device and the tray, are stacked as a plurality of empty trays. An empty tray holding device having an empty tray table that can be placed and movable up and down, and an empty tray that has a tray exchange table that can be moved up and down and that is provided on the lower surface side of the tray exchange table and can hold the empty tray A holding section, and raising the tray exchange table to raise the lowermost one of the plurality of supply trays held by the supply tray holding device. Then, the empty tray held in the empty tray holding unit is released and held by lowering the tray exchange table, and the empty tray held in the empty tray holding unit is released and received on the upper surface of the empty tray table. A tray exchange device, the empty tray holding unit and the tray transport port are aligned by raising the tray exchange table, and the empty tray positioned at the component extraction position is moved from the component extraction position to the empty tray. The tray is transferred to the empty tray holding unit through the tray transfer port and transferred, and the tray replacement table and the tray transfer port are aligned by lowering the tray replacement table, and are received on the upper surface of the tray replacement table. Forward the supply tray from the tray exchange table through the tray transport port. Comprising a tray transporting device having a transport mechanism for positioning conveyed to parts sampling position, the front Kisora tray is transferred from the transfer mechanism to said empty tray holding unit, wherein the feed tray, the tray exchange table Ru is transferred to the conveying mechanism from.

  According to this, since the tray transfer device itself has a tray transfer function, a supply mechanism for supplying the tray from the supply container to the conveyor mechanism or for supplying the tray from the conveyor mechanism to the collection container as in the related art is unnecessary. . Therefore, the tray supply device has a simple structure and can be downsized.

FIG. 2 is a cross-sectional view of a schematic configuration of a component mounter provided with the embodiment of the tray supply device of the present invention as viewed from a side. It is a perspective view which shows the outline of a tray. FIG. 3 is a perspective view illustrating a schematic configuration of a tray exchange device of the tray supply device. It is a perspective view showing the state where the end of the conveyance mechanism of the tray conveyance device of the tray supply device was positioned at the conveyance position by the turning mechanism. It is a perspective view showing the state where the end of the conveyance mechanism of the tray conveyance device of the tray supply device was positioned at the retreat position by the turning mechanism. FIG. 5 is a diagram illustrating an initial state in which a supply tray holding unit of the tray exchange device holds the supply tray when viewed from a tray conveying direction. FIG. 8 is a diagram illustrating a state in which a tray exchange table of the tray exchange device is raised and a first holding release block is in contact with a supply tray holding unit, as viewed from a tray conveying direction. FIG. 11 is a diagram illustrating a state in which the tray exchange table of the tray exchange device is further raised, and a rotation restriction release block is in contact with the rotation restriction block, as viewed from the tray conveyance direction. The tray exchange table of the tray exchange device is further raised, the rotation restriction release block pushes up the rotation restriction block, the first holding release block rotates the supply tray holding portion, and the empty tray holding portion is positioned at the transport position, FIG. 5 is a diagram illustrating a state in which an empty tray is transferred from a transport mechanism of a tray transport device to an empty tray holding unit, as viewed from the tray transport direction. FIG. 7 is a diagram illustrating a state in which a tray exchange table of the tray exchange device is lowered and a rotation restriction release block is separated from the rotation restriction block, as viewed from a tray conveying direction. The tray exchange table of the tray exchange device is further lowered, the first holding release block is separated from the supply tray holding unit, and the state where the lowermost supply tray is transferred from the supply tray holding unit to the tray exchange table is viewed from the tray conveyance direction. FIG. FIG. 9 is a diagram illustrating a state in which the tray exchange table of the tray exchange device is further lowered, and a supply tray at an upper stage from a lowermost stage is held by a supply tray holding unit when viewed from a tray conveying direction. FIG. 6 is a diagram illustrating a state in which the empty tray table of the tray exchanging device is raised and positioned at the empty tray receiving position, and the tray exchanging table is further lowered when viewed from the tray conveying direction. FIG. 13 is a diagram illustrating a state in which the tray replacement table of the tray replacement device is further lowered, and an empty tray holding unit is in contact with a second holding release block when viewed from the tray conveyance direction. The tray exchange table of the tray exchange device is further lowered and positioned at the transport position, the first transport roller of the tray transport device pivots from the retracted position to the transport position, and the empty tray is moved from the empty tray holding section to the empty tray table. FIG. 5 is a view of the state transferred to the tray viewed from the tray conveyance direction. FIG. 9 is a diagram illustrating a state in which the supply tray is transferred from the tray exchange table to the transport mechanism and the empty tray table of the tray exchange device is lowered to the standby position together with the empty tray when viewed from the tray transport direction. FIG. 6 is a diagram illustrating a state in which a first transport roller of the tray transport device is positioned at a transport position and an empty tray is transferred from a transport mechanism to an empty tray holding unit when viewed from the tray transport direction. FIG. 5 is a diagram illustrating a state in which a first transport roller of a tray transport device is positioned at a transport position and a supply tray is moved from a tray exchange table to a transport mechanism, as viewed from the transport direction of the tray.

(1. Schematic configuration of component mounter with tray supply device)
Hereinafter, a component mounter including an embodiment of a tray supply device of the present invention will be described with reference to FIGS. 1, 2, 3, 4A, 4B, 5A, 6A, and 6B. In the drawing, the transfer direction of the tray (hereinafter, the tray on which the components P are placed is referred to as a supply tray Tp, and the tray from which the components P are collected and emptied is referred to as an empty tray Te) is the Y direction, A horizontal direction orthogonal to the direction is defined as an X direction (a direction perpendicular to the paper surface), and a vertical direction orthogonal to the X and Y directions is defined as a Z direction. In addition, a pillar 50 described below, which is located on the rightmost side of FIG. 3, is shown in a state of being cut in the Z direction so that the internal configuration can be seen.

  As shown in FIG. 1, the component mounter 1 according to the present embodiment is disposed on the back side (the right side in FIG. 1) of the upper surface of the base 11, transports the substrate PB, and carries in and out of the component mounting position. A substrate transfer device 2, a component transfer device 3 arranged above the upper surface of the base 11 for sucking and transferring the component P to be mounted on the substrate PB, and a near side of the upper surface of the base 11 (FIG. 1, a tray supply device 4 for supplying the supply tray Tp and collecting the empty tray Te.

  Here, as shown in FIG. 2, the empty tray Te (supply tray Tp) is formed in a rectangular plate shape, a wall w for preventing the component P from dropping is formed on the peripheral edge of the upper surface, and both side walls parallel to the Y direction. Two (four on both side walls) concave portions d into which claw portions 53a (see FIG. 3) of a supply tray holding portion 53 described later are inserted are formed at a predetermined interval on the lower surface side of the tray.

  Returning to FIG. 1, the substrate transfer device 2 includes a pair of guide rails 21a and 21b, a pair of conveyor belts 22a and 22b, a clamp device 23, and the like. The pair of guide rails 21a and 21b extend in the X direction and are arranged in parallel with each other at a distance substantially equal to the width of the substrate PB. The pair of conveyor belts 22a and 22b are juxtaposed directly below the guide rails 21a and 21b. The clamp device 23 is disposed between the pair of guide rails 21a and 21b and below the mounting position.

  In the board transfer device 2 having such a configuration, the board PB is transferred to the component mounting position by the pair of conveyor belts 22a and 22b while being guided in the X direction by the pair of guide rails 21a and 21b. The belt is pushed up from the belts 22a and 22b, clamped and positioned and fixed.

  The component transfer device 3 includes a head holder 31 and the like that are moved in a horizontal plane by a driving device 30. The driving device 30 includes a pair of fixed rails 32a and 32b, a head moving rail 33, and the like. The pair of fixed rails 32a and 32b extend in the Y direction above both ends of the substrate transfer device 2 and are arranged in parallel with each other. The head moving rail 33 is disposed so as to extend in the X direction, and both ends are supported so as to be movable along the fixed rails 32a and 32b. The head moving rail 33 is configured to be controllable by a servomotor (both not shown) via a ball screw.

  The head holder 31 is movably supported along the head moving rail 33. The head holder 31 is configured to be controllable by a servomotor (both not shown) via a ball screw. The head holder 31 holds a recognition camera 34 capable of recognizing a component mounting position on the board PB and a mounting head 35 rotatable around the Z axis and capable of moving up and down in the Z direction. In the mounting head 35, a nozzle holder 37 for detachably holding a component suction nozzle 36 for sucking the component P is provided to protrude downward at the rotation center of the mounting head 35.

  The nozzle holder 37 on which the component suction nozzle 36 is mounted is supported so as to be able to move up and down in the Z direction from the mounting head 35 and to be rotatable around the Z axis. The nozzle holder 37 on which the component suction nozzle 36 is mounted can be lifted and lowered by a servomotor (both not shown) through a ball screw, and can be rotated by a servomotor (both not shown) through a gear mechanism. Be composed. The component suction nozzle 36 is formed in a substantially hollow cylindrical shape, is connected to a vacuum pump (not shown), and is configured to be able to suck and hold the component P at the lower end of the nozzle. Further, a component recognition camera 38 capable of recognizing a suction state of the component P of the component suction nozzle 36 is attached between the component transfer device 3 and the tray supply device 4.

  In the component transfer device 3 having such a configuration, the component P placed on the supply tray Tp supplied to the component collection position Pp of the tray supply device 4 is sucked by the component suction nozzle 36 and the head moving rail 33 is moved. Then, the substrate is transferred to the substrate PB positioned at the component mounting position by the head holder 31, and is mounted at the component mounting position on the substrate PB by the component suction nozzle.

The tray supply device 4 includes a supply tray holding device 41, an empty tray holding device 42, a tray exchange device 43, a tray transport device 44, and the like.
The supply tray holding device 41 is configured to be able to hold a plurality of supply trays Tp in a rectangular parallelepiped casing 51 in a stacked manner, and the empty tray holding device 42 is below the supply tray holding device 41 (Z direction). And a plurality of empty trays Te can be held in a rectangular parallelepiped casing 52 in a stacked manner. Four pillars 50 are erected in parallel at four corners inside the housings 51 and 52 arranged vertically. That is, the four columns 50 are provided so as to extend from the case 51 to the case 52, and the empty tray table 54 and the tray exchange table 55 described later move up and down along the four columns 50. (Movable in the Z direction).

  As shown in FIGS. 3 and 5A, the supply tray holding device 41 includes four supply tray holding portions 53 for holding the supply tray Tp. Each of the supply tray holding portions 53 has a claw portion 53a that can be inserted into the concave portion d of the supply tray Tp at a lower portion, a contact portion 53b with which a rotation regulating block 57 described later contacts, and an intermediate portion that will be described later. The contact portion 53c with which the first holding release block 59 contacts is formed on the side opposite to the claw portion 53a. The four supply tray holding portions 53 are arranged such that the lower claw portions 53a face the inside of the housing 51 (so that the contact portions 53c in the middle portions face the outside of the housing 51, respectively), and the upper portions thereof. The four columns 50 are mounted at the same height in the housing 51 so as to be rotatable around the X-axis.

  Returning to FIG. 1, the empty tray holding device 42 includes a rectangular plate-shaped empty tray table 54 on which the empty tray Te can be placed. The empty tray table 54 is provided in the housing 52 so as to be movable in the Z direction along the four columns 50 by a motor, a ball screw mechanism, and the like (not shown). An upper door 42a and a lower door 42b are provided on the upper and lower sides of the outer side of the housing 52 in the Y direction (the left side in FIG. 1). The upper door 42a is provided to be openable by rotating upward about the X axis about the upper end, and the lower door 42b is provided to be openable by rotating downward about the X axis about the lower end. When the component P in the supply tray Tp remains at the component collection position Pp due to a collection mistake or the like, the upper door 42a returns the tray to the empty tray holding device 42, opens the upper door 42a, and pulls out the tray. This is a door for confirming the part P. The lower door 42b is a door for collecting empty trays Te stacked on the empty tray table 54.

  As shown in FIGS. 3 and 5A, the tray exchange device 43 includes a tray exchange table 55 having a rectangular plate shape on which the supply tray Tp can be placed, six empty tray holding portions 56 capable of holding empty trays Te, and four empty tray holding portions 56. The four rotation restriction blocks 57 for restricting the rotation of the supply tray holding unit 53, the four rotation restriction release blocks 58 for releasing the rotation restriction of the four rotation restriction blocks 57, respectively, and the holding of the four supply tray holding units 53, respectively. There are provided four first holding release blocks 59 for releasing and six second holding release blocks 60 for releasing the holding of the six empty tray holding portions 56, respectively.

The tray exchange table 55 is provided in the housing 51 so as to be movable in the Z direction along the four columns 50 by a motor and a ball screw mechanism (not shown).
Each empty tray holding portion 56 is formed in a plate shape and provided on the lower surface side of the tray exchange table 55, and a claw portion 56a capable of holding the empty tray Te is provided on one end side. Each claw portion 56a is formed with an inclined surface 56b facing the inside of the housing 52. The six empty tray holding portions 56 are provided at predetermined intervals on both side surfaces parallel to the Y direction of the tray exchange table 55 so as to hang down three by three. That is, each empty tray holding portion 56 is rotatable around the Y-axis with respect to a side surface parallel to the Y direction of the tray exchange table 55 such that the claw portion 56a is located at the lower portion and faces the inside of the housing 52. Attached to.

Each rotation restricting block 57 is formed in a shape capable of restricting the rotation of each supply tray holding portion 53 by contacting the contact portion 53b of each supply tray holding portion 53 from above. Each rotation restricting block 57 is provided so as to be vertically movable (movable in the Z direction) along each support column 50 above each supply tray holding portion 53.
Each rotation restriction release block 58 is formed in a shape capable of releasing the rotation restriction of each rotation restriction block 57 by contacting each rotation restriction block 57 from below and pushing up each rotation restriction block 57. The four rotation restriction release blocks 58 are respectively fixed to both ends of both sides of the tray exchange table 55 parallel to the X direction.

  Each of the first holding release blocks 59 abuts on the contact portion 53c of each of the supply tray holding portions 53 from below, and rotates each of the supply tray holding portions 53 toward the outside of the housing 52. It is formed in a shape that can be released from holding. The four first holding release blocks 59 are provided below the supply tray holding portions 53 so as to be vertically movable (movable in the Z direction) along the columns 50 and one end of each of the compression coils is fixed to the columns 50. A pin 59b urged upward by a spring 59a and protruding in the Y direction is provided on the side surface. Each pin 59b is in contact with the bottom surface of each rotation restriction release block 58 to restrict the upward movement of each first holding release block 59 due to the urging force of the compression coil spring 59a. Accordingly, each first holding release block 59 is raised by the urging force of the compression coil spring 59a as the tray replacement table 55 is raised (Z direction).

  Each second holding release block 60 is fixed in the housing 52, and abuts the claw portion 56 a of each empty tray holding portion 56 from below to rotate each empty tray holding portion 56 toward the outside of the housing 52. Thereby, the empty tray Te is formed in a shape that can be released. That is, an inclined surface 60 a facing the outside of the housing 52 is formed on the upper part of each second holding release block 60, and the inclined surface 56 b of the claw portion 56 a of each empty tray holding portion 56 comes into contact with the inclined surface 60 a. Thus, each empty tray holding unit 56 is rotated toward the outside of the housing 52.

  Returning to FIG. 1, the tray transport device 44 is arranged to extend in the Y direction from a tray transport port G provided between the housings 51 and 52. The tray transport device 44 transports the empty tray Te and the supply tray Tp, transfers the empty tray Te from the transport mechanism 70 to the empty tray holding unit 56, and transports the supply tray Tp from the tray exchange table 55. In order to transfer to the mechanism 70, a turning mechanism 80 and the like provided at the end of the transport mechanism 70 on the tray transport port G side are provided.

  The transport mechanism 70 includes a first transport roller 71 disposed on the tray transport port G side, a second transport roller 72 disposed on the component collection position Pp side separated from the tray transport port G by a predetermined distance in the Y direction, 1, a transport belt 73 and the like that are stretched between the second transport rollers 71 and 72. The transport mechanism 70 transports and transfers the empty tray Te positioned at the component collecting position Pp from the component collecting position Pp to the empty tray holding unit 56 through the tray transport port G, and further receives the empty tray Te on the upper surface of the tray exchange table 55. The supply tray Tp is transferred from the tray exchange table 55 through the tray transfer port G to the component collecting position Pp and positioned.

  As shown in FIGS. 4A and 4B, the turning mechanism 80 has a turning shaft 81 a that is arranged in parallel with the rotating shaft 71 a of the first conveying roller 71 and is connected radially. A turning roller 81 for turning in the radial direction, a motor 82 (rotating device) for rotating the turning roller 81, and a belt mechanism 83 (rotating device) are provided. As shown in FIGS. 4A and 6A and 6B (solid line), the turning mechanism 80 moves the transfer position Qs aligned with the tray exchange table 55 or the empty tray holding portion 56 at the tray transfer port G, and the transfer mechanism 80 shown in FIGS. 4B and 6A and 6B ( As shown by a dashed line), the first transport roller 71 is turned between the empty tray Te held by the empty tray holding unit 56 and the retreat position Qe which does not interfere.

  The reason for providing such a turning mechanism 80 is as follows. When the empty tray Te is transferred from the transport mechanism 70 to the empty tray holding unit 56, the end of the empty tray Te on the transport mechanism 70 side is the end of the transport belt 73 of the transport mechanism 70, specifically, the first transport roller. It is in a state of vertically overlapping the portion of the transport belt 73 wound around 71. In the present embodiment, as will be described later, the empty tray Te held by the empty tray holding section 56 needs to be lowered, and thus interferes with the end of the transport belt 73 as it is. Therefore, in order to prevent interference between the empty tray Te and the end of the transport belt 73 when the empty tray Te held by the empty tray holding unit 56 descends, the revolving mechanism 80 moves the first transport roller 71 to the retracted position. It is provided so that turning to Qe is possible.

  In the tray supply device 4 having such a configuration, the supply tray Tp held by the supply tray holding device 41 is received by the tray exchange table 55 of the tray exchange device 43. Further, the empty tray positioned at the component collecting position Pp is transported to the tray transport opening G by the transport mechanism 70 of the tray transport device 44. At this time, the turning mechanism 80 of the tray transfer device 44 turns the end of the transfer belt 73 of the transfer mechanism 70 to the transfer position Qs. Then, the empty tray Te is transferred from the transport mechanism 70 to the empty tray holding unit 56 of the tray changing device 43, and is transferred from the empty tray holding unit 56 to the empty tray table 54 of the empty tray holding device 42. The turning mechanism 80 turns the end of the transport belt 73 to the retracted position. Then, the empty tray holding unit 56 that holds the empty tray Te is lowered. The turning mechanism 80 turns the end of the transport belt 73 to the transport position. Then, the supply tray Tp is transferred from the tray exchange device 43 to the transfer mechanism 70 of the tray transfer device 44, and transferred from the tray transfer port G to the component collecting position Pp for positioning.

(2. Operation of tray supply device)
Next, the operation of the tray supply device 4 will be described with reference to FIGS. 5A to 5K and FIGS. 6A and 6B. FIGS. 5A to 5K show the operation state as viewed from the Y direction. However, since the respective members overlap and are difficult to understand, the empty tray table 54, the tray replacement table 55, the empty tray holding unit 56, and the rotation restriction releasing block are shown. Numeral 58 indicates a dashed line, and other members indicate solid lines. The supply tray Tp is indicated by a spot pattern, and the empty tray Te is indicated by a hatched pattern. 5A to 5K, the first transport roller 71 is shown only when it is positioned at the transport position Qs by the turning mechanism 80, and is not shown when it is positioned at the retracted position Qe by the turning mechanism 80. .

  As shown in FIG. 5A, it is assumed that seven supply trays Tp are held in the supply tray holding unit 53 of the supply tray holding device 41. Although not shown, it is assumed that the empty tray Te from which all components P have been collected is positioned at the component collection position Pp. At this time, the empty tray table 54 is located at the lower standby position in the housing 52 of the empty tray holding device 42, and the tray exchange table 55 is located in the housing 52 of the supply tray holding device 41. It is located at a standby position separated from the portion 53 downward.

Then, the rotation of the supply tray holding unit 53 is restricted by the rotation restricting block 57, the first holding release block 59 is separated downward from the supply tray holding unit 53, and the rotation restriction releasing block 58 is moved downward from the rotation restriction block 57. Are separated from each other. The empty tray holding section 56 is separated upward from the second holding release block 60. The first transport roller 71 is positioned at the transport position Qs by the turning mechanism 80.
Next, as shown in FIG. 5B, the tray replacement table 55 is raised until the first holding release block 59 comes into contact with the supply tray holding portion 53 by the restoring force of the not-shown compression coil spring 59a. At this time, since the rotation of the supply tray holding unit 53 is regulated by the rotation regulating block 57, the supply tray holding unit 53 maintains the holding state of the supply tray Tp without rotating.

  Next, as shown in FIG. 5C, the tray exchange table 55 is raised until the rotation restriction release block 58 contacts the rotation restriction block 57. At this time, since the rotation of the supply tray holding unit 53 is regulated by the rotation regulating block 57, the supply tray holding unit 53 maintains the holding state of the supply tray Tp without rotating. Then, the first holding release block 59 maintains the contact state with the supply tray holding unit 53 because the supply tray holding unit 53 does not rotate.

  Next, as shown in FIG. 5D, the rotation restriction release block 58 pushes up the rotation restriction block 57 to further raise the tray exchange table 55 until the rotation restriction block 57 releases the rotation restriction of the supply tray holding unit 53. . As a result, the first holding release block 59 is raised by the restoring force of the compression coil spring 59a, and the supply tray holding section 53 is pushed up by the first holding release block 59 and rotated to release the holding state of the supply tray Tp. I do. Then, the lowermost supply tray Tp of the stacked supply trays Tp is placed on the tray exchange table 55.

  Then, the position of the empty tray holding portion 56 and the position of the tray carrying port G are adjusted by the rise of the tray exchange table 55. That is, as shown in FIG. 6A, the upper surface of the claw portion 56a of the empty tray holding portion 56 is flush with the upper surface of the transport belt 73 wound around the first transport roller 71 located at the tray transport port G. . Therefore, the empty tray Te conveyed from the component collecting position Pp is transferred from the conveying belt 73 wound around the first conveying roller 71 located at the tray conveying port G to the claw portion 56a of the empty tray holding section 56. Can be Thereafter, the first transport roller 71 is pivoted from the transport position Qs by the pivot mechanism 80 and is positioned at the retreat position Qe.

  Next, as shown in FIG. 5E, the tray replacement table 55 is lowered until the rotation restriction release block 58 comes into contact with the pin 59b of the first holding release block 59. Since the rotation restriction release block 58 is separated from the rotation restriction block 57, the rotation restriction block 57 falls under its own weight and comes into contact with the supply tray holding section 53. However, since the first holding release block 59 is in contact with the supply tray holding portion 53 by the restoring force of the compression coil spring 59a, the supply tray holding portion 53 maintains the holding release state.

  Next, as shown in FIG. 5F, the tray replacement table 55 is further lowered until the first holding release block 59 is separated from the supply tray holding unit 53. As a result, the supply tray holding portion 53 becomes rotatable, and the rotation restricting block 57 rotates the supply tray holding portion 53 in the direction of the holding state by its own weight, and the claw portion 53a of the supply tray holding portion 53 at the lowermost stage. It starts to be inserted into the concave portion d of the supply tray Tp in the stage immediately above the supply tray Tp. Thus, the lowermost supply tray Tp is separated from the stacked supply trays Tp and can be lowered together with the tray exchange table 55.

Next, as shown in FIG. 5G, the tray replacement table 55 is further lowered until the first holding release block 59 is completely separated from the supply tray holding portion 53. As a result, the supply tray holding section 53 is in a state of holding the supply trays Tp that are rotated and stacked by their own weight of the rotation restricting block 57 and are stacked.
Next, as shown in FIG. 5H, the empty tray table 54 is raised to a position where the empty tray Te can be received. Then, the tray replacement table 55 is lowered until the empty tray holding unit 56 approaches the second holding release block 60 and the empty tray holding unit 56 contacts the second holding release block 60 as shown in FIG. 5I. Let it.

  Next, as shown in FIG. 5J, when the tray exchange table 55 is further lowered, the empty tray holding unit 56 is rotated by the second holding release block 60 to release the holding state of the empty tray Te. The tray Te is placed on the empty tray table 54. By lowering the tray exchange table 55, the positions of the tray exchange table 55 and the tray transfer port G are adjusted. That is, as shown in FIG. 6B, the first transport roller 71 is pivoted from the retreat position Qe by the pivot mechanism 80 to be positioned at the transport position Qs, and the upper surface of the tray exchange table 55 is located at the tray transport port G. It is flush with the upper surface of the transport belt 73 wound around one transport roller 71.

  Next, as shown in FIG. 5K, the supply tray Tp placed on the tray exchange table 55 is transferred to the transport belt 73 wound around the first transport roller 71 located at the tray transport port G. Is transported to the component picking position Pp and positioned. Further, the empty tray table 54 on which the empty tray Te is placed is lowered to the standby position in the housing 52 of the empty tray holding device 42. Thus, one cycle of tray supply operation is completed. Thereafter, this cycle is repeated.

(3. Effect)
The tray supply device 4 of the present embodiment includes a supply tray holding device 41 capable of holding a plurality of trays on which components P are placed as a supply tray Tp in a stacking manner, and a supply tray holding device 41 disposed below the supply tray holding device 41 to supply a plurality of trays. A plurality of empty trays Te are loaded with empty trays from which components P are collected at a component collecting position Pp horizontally separated by a predetermined distance from a tray transfer port G provided between the tray holding device 41 and the tray carrying port G. An empty tray holding device 42 having a movable and vertically movable empty tray table 54, and a vertically movable tray exchange table 55, which is provided on the lower surface side of the tray exchange table 55 and can retain an empty tray Te. It has an empty tray holding portion 56 and, among the plurality of supply trays Tp held by the supply tray holding device 41, connects the lowermost supply tray Tp to the tray exchange table 55. The empty tray Te held by the empty tray holding section 56 is released by lowering the tray replacement table 55 to release the holding and released from the upper surface of the empty tray table 54. And a tray exchanging device 43 for receiving the information.

  Further, by raising the tray exchange table 55, the empty tray holding unit 56 and the tray transfer port G are aligned, and the empty tray Te positioned at the component collection position Pp is moved from the component collection position Pp to the tray transfer port G. The tray exchange table 55 and the tray transfer port G are aligned by lowering the tray exchange table 55, and the supply received on the upper surface of the tray exchange table 55. A tray transfer device 44 having a transfer mechanism 70 for transferring and positioning the tray Tp from the tray exchange table 55 through the tray transfer port G to the component collecting position Pp. The tray transfer device 44 transfers the empty tray Te from the transfer mechanism 70 to the empty tray holding unit 56, and transfers the supply tray Tp from the tray exchange table 55 to the transfer mechanism 70.

  According to this, since the tray transport device 44 itself has a tray transfer function, there is no need for a supply mechanism for supplying a tray from a supply container to the conveyor mechanism or for supplying a tray from the conveyor mechanism to the collection container as in the related art. Become. Therefore, the tray supply device 4 has a simple structure and can be downsized.

  In order to transfer the empty tray Te and the supply tray Tp to the tray transport device 44, the end of the transport mechanism 70 on the tray transport port G side interferes with the empty tray Te held by the empty tray holding unit 56. A turning mechanism 80 is provided, which is capable of turning between a retreat position Qe not to be used and a transfer position Qs at the tray transfer port G, which is aligned with the tray exchange table 55 or the empty tray holding portion 56. When the empty tray Te is transferred from the transport mechanism 70 to the empty tray holding unit 56, the end of the empty tray Te on the transport mechanism 70 side is in a state of vertically overlapping the end of the transport mechanism 70. Since the empty tray Te held by the empty tray holding unit 56 needs to be lowered and transferred to the empty tray table 54, the empty tray Te interferes with the end of the transport mechanism 70 as it is. Therefore, the turning mechanism 80 turns the end of the transport mechanism 70 to the retreat position Qe. Thus, the empty tray Te held by the empty tray holding unit 56 can avoid interference with the end of the transport mechanism 70 when descending. Further, since the end of the transfer mechanism 70 of the tray transfer device 44 can be arranged in the tray transfer opening G, the size in the transfer direction can be reduced, and the size of the tray transfer device 44 can be reduced.

  In addition, the transport mechanism 70 includes a first transport roller 71 disposed on the tray transport port G side, a second transport roller 72 disposed on the component collection position Pp side, and a first transport roller 71, 72. And a conveyer belt 73 wound around the first conveyer roller 71. The turning mechanism 80 has a turning shaft 81a arranged parallel to the rotation shaft 71a of the first conveyer roller 71 and connected radially. Since the turning mechanism 81 includes the turning roller 81 that turns the turning roller 71 in the radial direction and the rotating devices 82 and 83 that turn the turning roller 81, the turning mechanism 80 has a simple structure.

  The tray supply device 4 receives the empty tray Te conveyed by the tray conveyance device 44 by the empty tray holding unit 56, and receives the supply tray Tp held by the supply tray holding device 41 using the tray exchange table 55. Since the receiving operation is performed at the same time, the tray supply time can be reduced.

(4. Others)
In the above-described embodiment, the case where the tray supply device 4 is applied to the component mounter 1 has been described. However, any device that needs to supply a tray can be applied.

  1: component mounter, 4: tray supply device, 41: supply tray holding device, 42: empty tray holding device, 43: tray exchange device, 44: tray transport device, 53: supply tray holding portion, 54: empty tray Table, 55: Tray exchange table, 56: Tray exchange table, 57: Rotation restriction block, 58: Rotation restriction release block, 59: First retention release block, 60: Second retention release block, 70: Transport mechanism, 71: First transport roller, 72: second transport roller, 73: transport belt, 80: rotating mechanism, 81: rotating roller, 82: motor (rotating device), 83: belt mechanism (rotating device), Tp: supply tray, Te : Empty tray, P: component, Pp: component collection position, Qe: retreat position, Qs: transport position, G: tray transport port

Claims (4)

A supply tray holding device capable of holding a plurality of trays on which components are placed as a supply tray in a stacking manner,
The tray in which the components have been collected and emptied at a component collection position that is disposed below the supply tray holding device and that is horizontally separated by a predetermined distance from a tray transfer port provided between the tray and the supply tray holding device. An empty tray holding device having an empty tray table that can be placed in a plurality of stacks as an empty tray and that can move up and down,
The plurality of supply trays having a tray exchange table that can move up and down, an empty tray holding unit that is provided on the lower surface side of the tray exchange table and that can hold the empty tray, and that is held by the supply tray holding device. The lowermost of the supply trays is released by raising the tray exchange table and received by the upper surface of the tray exchange table, and the empty tray held by the empty tray holding unit is lowered by the tray exchange table. A tray exchange device that releases the holding by receiving it and receives it on the upper surface of the empty tray table,
The empty tray holding unit and the tray transfer port are aligned by raising the tray exchange table, and the empty tray positioned at the component collection position is moved from the component collection position through the tray transfer port. The transfer tray is conveyed to and delivered to an empty tray holding unit, and further, the tray exchange table is lowered to align the tray exchange table with the tray transport port, and the supply tray received on the upper surface of the tray exchange table A tray transport device having a transport mechanism for transporting and positioning the component from the tray exchange table through the tray transport port to the component collection position ,
Before Kisora tray, the are from the transport mechanism transferred to the empty tray holding unit, the supply tray from said tray interchange table Ru is transferred to the transport mechanism, the tray supply device.   In order to transfer the empty tray and the supply tray, the tray transport device may be configured such that the end of the transport mechanism on the tray transport port side does not interfere with the empty tray held by the empty tray holding unit. 2. The tray supply device according to claim 1, further comprising: a turning mechanism configured to turn between a position and a transfer position at which the tray transfer port is aligned with the tray exchange table or the empty tray holding unit. 3. The transport mechanism includes a first transport roller disposed on the tray transport port side, a second transport roller disposed on the component collection position side, and a transport belt bridged between the first and second transport rollers. And
The turning mechanism has a turning shaft arranged in parallel with a rotation axis of the first conveyance roller and connected radially, and a turning roller that turns the first conveyance roller in a radial direction; and the turning roller. The tray supply device according to claim 2, further comprising: a rotation device configured to rotate the tray.   An operation of receiving the empty tray conveyed by the tray conveyance device by the empty tray holding unit, and an operation of receiving the supply tray held by the supply tray holding device by the tray exchange table The tray supply device according to any one of claims 1 to 3, wherein the tray supply is performed at the same time.

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