JP7620865B2 - Parts mounting equipment - Google Patents

Description

This disclosure relates to a component mounting device.

Conventionally, an electronic component supplying device (see, for example, Patent Document 1) has been proposed that reduces the burden on workers in handling pallets in an electronic component supplying device that stores pallets in multiple stages. Also, a tray replacement method for a tray feeder has been proposed (see, for example, Patent Document 2) that reduces the downtime of the device for tray replacement and improves productivity in a component mounting device that mounts components supplied by a tray feeder onto a board.

Japanese Patent Application Publication No. 10-261893 JP 2012-114324 A

The current common method of supplying parts to a tray feeder is to place the trays containing the parts on a plate called a pallet, set a number of these pallets in a tray magazine, and then set the tray magazine in the magazine holding section (parts stock section) in the tray feeder. However, in this case, the tray magazine with the trays set in it can be heavy (e.g., up to about 20 kg), which places a considerable burden on the worker when transporting it to the component mounting device as part of the facility and when setting the tray magazine in the tray feeder.

The present disclosure was devised in consideration of the above-mentioned conventional situation, and aims to provide a part mounting device that improves the workability of part supply by workers.

The present disclosure provides a component mounting device having a head unit that removes components stored in a tray and mounts them on a board, the component mounting device comprising: a stocker that is movable on an installation surface of the component mounting device and can hold a pallet on which the tray is placed; a holding section that detachably holds the stocker; and a pallet moving section that pulls the pallet out of the stocker and moves it to a removal position from which the components can be removed by the head unit, or inserts the pallet in the removal position into an insertion position of the stocker into which the pallet is not inserted, the stocker having a magazine that stores the pallet, and a stocker main body that stores the magazine , the holding section being constituted by a plurality of cam followers provided on outer wall surfaces on both sides of the magazine and a plurality of guides provided on inner wall surfaces on both sides of the stocker main body , each of the cam followers is placed on each of the guides that are arranged in a one-to-one correspondence, and the pallet is positioned on the pallet moving section.

According to the present disclosure, it is possible to improve the workability of workers supplying parts in a part mounting device.

FIG. 1 is an exploded side view showing a schematic configuration example of a component mounting device according to a first embodiment; FIG. 2 is a side view of the component mounting apparatus shown in FIG. 1 in a stocker-mounted state; 3 is a rear view of the component mounting device shown in FIG. 2 as seen from the Y direction. Perspective view of magazine with pallets pulled out FIG. 1 is a rear view of a component mounting device provided with a holding portion, seen from the Y direction; FIG. 6 is a side view of the component mounting device shown in FIG. A side view of the pallet moving section with the stocker detection sensor visible FIG. 8 is a plan view of the component mounting device shown in FIG. FIG. 9 is an enlarged view of a portion A near the stocker detection sensor shown in FIG. Block diagram showing the configuration of the control system of the component mounting device FIG. 11 is a rear view of a component mounting device according to a second embodiment before a stocker is mounted; FIG. 12 is a rear view of the component mounting device shown in FIG. 11 after the stocker is installed. FIG. 13 is a side view of the component mounting device shown in FIG.

Below, with reference to the drawings as appropriate, an embodiment specifically disclosing the component mounting device according to the present disclosure will be described in detail. However, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or duplicate explanation of substantially identical configurations may be omitted. This is to avoid the following explanation becoming unnecessarily redundant and to facilitate understanding by those skilled in the art. Note that the attached drawings and the following explanation are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

Figure 1 is an exploded side view showing a schematic configuration example of a component mounting device 11 according to embodiment 1. In the figure with directional arrows, the X-axis indicates the left-right direction of the component mounting device 11, the Y-axis indicates the front-rear direction of the component mounting device 11, and the Z-axis indicates the up-down direction of the component mounting device 11. The X-axis and Y-axis are orthogonal and included in the horizontal plane. The Z-axis is included in the vertical plane.

The component mounting device 11 according to the first embodiment has as its main components a stocker 13, a holding unit (see below), and a pallet moving unit (e.g., a tray feeder 15). As will be described in detail later, the holding unit is a mechanism that holds the stocker 13 detachably relative to the tray feeder 15, and specifically has a lower cam follower 17 (see FIG. 6), an upper cam follower 19 (see FIG. 6), a lower guide 21 (see FIG. 6), and an upper guide 23 (see FIG. 6).

The part mounting device 11 may be configured with the tray feeder 15 as one of its components (in other words, as a part of it). The tray feeder 15 may also be configured as a separate entity from the part mounting device 11, in which case the tray feeder 15 may be configured as an integral part connected to the part mounting device 11.

The component mounting device 11 is equipped with a head unit (not shown) that takes out a plurality of components (for example, electronic components that are mounted (installed) by the component mounting device 11 at a predetermined position defined for each component on the board) stored in a tray 25 (see FIG. 4) and mounts (installs) them on a board (not shown). The board is transported by a board transport mechanism (not shown). The board transport mechanism is disposed on the side of the tray feeder 15 on the Y direction side. The component mounting device 11 has a linear motor-driven Y-axis moving table (not shown) arranged in the Y direction. The Y-axis moving table is connected to an X-axis moving table (not shown) so that it can move freely in the Y direction. A head unit (not shown) is attached to the X-axis moving table so that it can move freely in the X direction by a linear drive mechanism. The head unit is a multiple head equipped with a plurality of unit transfer heads (not shown), and a suction nozzle is attached to the lower end of each unit transfer head so that it can be replaced. The X-axis moving table, the Y-axis moving table, and the head unit make up the component mounting mechanism 27 (see Figure 10) of the component mounting device 11.

The component mounting device 11 drives the Y-axis moving table and the X-axis moving table, respectively, so that the head unit moves horizontally between the tray feeder 15 and the board held by the board transport mechanism, and the components stored on the tray 25 on the pallet 29 that has been moved to the component removal position (see below) are sucked and held by the suction nozzle, and mounted on the board.

The stocker 13 is capable of holding a pallet 29 on which the trays 25 are placed and transported. In the first embodiment, the stocker 13 has a magazine 31 that holds the pallet 29, and a stocker main body 33 that stores the magazines 31. The stocker main body 33 stores multiple magazines 31 (two in the example of FIG. 1) spaced apart in the vertical direction in multiple tiers. The stocker main body 33 has multiple (e.g., two) magazine support parts 35 (see FIG. 5) in the magazine storage space for supporting the multiple magazines 31 in multiple tiers.

The magazine support section 35 is formed in the shape of a shelf on which the magazines 31 are placed. Each magazine 31 is placed on the magazine support section 35, allowing smooth movement in the forward and backward directions (in other words, insertion and removal). In addition, by being placed on the magazine support section 35, the magazine 31 can float up from the magazine support section 35 within the range of the spacing above and below the magazine support section 35. This floating distance is necessary when positioning the magazine 31, which will be described later.

The stocker main body 33 has an outer shell formed into a vertically elongated rectangular parallelepiped shape by a frame or outer plate, etc. A pair of wheels 39 spaced apart in the left-right direction and two pairs spaced apart in the front-rear direction are provided on the underside of the base 37, which supports the stocker main body 33 from below. In other words, a total of four wheels 39 are fixed to the four corners of the rectangular underside of the base 37. The front pair or the rear pair of wheels 39 may be rotatable around a rotation axis in the Z direction to ensure maneuverability. The stocker main body 33 can be moved by running in any direction on the installation surface, for example, by being pushed or pulled by an operator.

In the stocker 13, the extension direction of the magazine support part 35 is the front-to-rear direction, and the stocker 13 is basically moved in this front-to-rear direction. The stocker 13 has a stocker front opening (not shown) so that the magazine 31 can be freely inserted and removed from the front, for example. The stocker 13 may also have a stocker rear opening (not shown) at the rear so that the magazine 31 can be inserted and removed. The stocker 13 is provided with a magazine stopper (not shown) to prevent the magazine 31 from popping out of the stocker front opening due to inertial force when the stocker 13 is moved.

The outer shell of the feeder body 41 of the tray feeder 15 is formed by a frame or outer plate. This outer shell is formed, for example, in an inverted L-shape as shown in FIG. 1 in side view. That is, a rectangular portion including the upper left corner having a rectangular shape in side view is cut out. The lower part of this cutout portion becomes a pair of extending side plate portions 43 provided on the left and right of the tray feeder 15. In the tray feeder 15, the portion between these cutout portions and the pair of extending side plate portions 43 becomes the stocker mounting portion 45, which is a vertically long space.

The outer shell shape of the tray feeder 15 formed in an inverted L-shape in side view is just one example, and the outer shell shape of the tray feeder 15 may be formed such that the pair of extending side plate portions 43 are at the same height as the feeder main body portion 41. In this case, the outer shell shape of the tray feeder 15 is a vertically long rectangle in side view. However, even if the tray feeder 15 has this rectangular outer shell shape in side view, the stocker mounting portion 45 is still formed between the pair of extending side plate portions 43.

Tray feeder 15 has two pairs of wheels 39 spaced apart in the front-rear direction on the underside of feeder body 41 and a pair of extending side plate portions 43. That is, tray feeder 15 has a total of four wheels 39 fixed to each of the four corners of the rectangular outer shape of its underside. The front pair of wheels 39 or the rear pair may be rotatable around a rotation axis in the Z direction to ensure maneuverability. Tray feeder 15 is installed at a predetermined position on installation surface 47 with each wheel 39 restricted from rotating and turning by a stopper. Tray feeder 15 is further positioned horizontally via an adjuster or the like, and then connected to the device body of component mounting device 11 that has already been positioned relative to installation surface 47.

Figure 2 is a side view of the part mounting device 11 shown in Figure 1 in a stocker-mounted state. In the part mounting device 11, the stocker 13, which stores multiple magazines 31 in multiple stages, is moved in the Y direction by an operator and mounted on the stocker mounting section 45 of the tray feeder 15. The stocker 13 mounted on the stocker mounting section 45 is connected to the feeder main body 41 by a connecting mechanism (not shown) having a locking mechanism 49 (see Figure 10), and is prevented from being removed from the feeder main body 41.

Figure 3 is a rear view of the component mounting device 11 shown in Figure 2, seen from the Y direction. The stocker 13 connected to the feeder main body 41 stores multiple pallets 29 (one representative pallet is shown in the example of Figure 3) with trays 25 placed on them in each magazine 31. The magazine 31 has multiple parallel pallet support rails 53 (see Figure 4) extending in the front-rear direction and spaced apart in the vertical direction on the opposing inner surfaces of a pair of parallel side plate portions 51 (see Figure 4). In each magazine 31, a pair of parallel sides along the front-rear direction of the pallet 29 are supported by the pallet support rails 53.

Figure 4 is a perspective view of the magazine 31 with the pallet 29 pulled out. The magazine 31 has a flat rectangular parallelepiped shape. A pair of parallel faces of the magazine 31 open as the pallet access opening 55. The magazine 31 has a pair of side plate portions 51 on the left and right sides of the pallet access opening 55. The pair of side plate portions 51 are connected at their upper edges by upper crosspieces 57 and connected at their lower edges by a bottom plate portion 59 to form a box shape. Pallet support rails 53 extending toward the pallet access opening 55 are provided in multiple stages spaced apart from each other vertically on the inner opposing surfaces of the pair of side plate portions 51. The pallet support rails 53 support the pair of parallel sides of the pallet 29 from below so that the pallet 29 stored inside the magazine 31 can be inserted and removed from the pallet access opening 55.

The magazine 31 has a pair of side plate parts 51 sandwiching the pallet entrance/exit opening 55, and a pallet shutter 61 that rotates around the Z axis is provided on one of them so as to be able to swing. The pallet shutter 61 is rotated and positioned on one end side in the swing direction, so that it protrudes into the insertion/removal path of the pallet 29 and regulates the insertion and removal of the pallet 29. The pallet shutter 61 protrudes into the insertion/removal path, so that it can regulate the ejection of the held pallet 29 from the magazine 31. The pallet shutter 61 is rotated and positioned on the other end side in the swing direction, so that it is moved to a position away from the insertion/removal path of the pallet 29, so that the pallet 29 can be inserted and removed. The pallet shutter 61 is operated manually or by an actuator (not shown). The actuator (not shown) can be controlled by a control unit 65 (see FIG. 10) that receives a signal from a stocker detection sensor 63 (see FIG. 10).

The pallets 29 stored in the magazine 31 are formed in a rectangular shape in a plan view. One of a pair of parallel sides of the pallet 29 is a first side 67, and the opposing other is a second side (not shown). The pallet 29 is transported (inserted and removed) with either the first side 67 or the second side at the leading end in the transport direction.

At least the top surface of the pallet 29 is made of a magnetic material. A tray 25 made of a non-magnetic material such as resin is placed on the top surface of the pallet 29. A number of parts are aligned on the tray 25. The tray 25 is placed in a predetermined position on the pallet 29 by a positioning device.

Two tray positioning pieces 69, parallel to the first side 67 and an adjacent side, are fixed perpendicularly to the top surface of the pallet 29. The two tray positioning pieces 69 are arranged in an orthogonal direction to form an inside corner. The tray 25 is positioned relative to the pallet 29 by pressing two side surfaces against the tray positioning pieces 69 so that one corner coincides with the inside corner of the pallet 29.

The tray 25 on the pallet thus positioned is fixed to the pallet 29 by pressing a positioning device (not shown) against the surface opposite the surface pressed against the tray positioning piece 69. The positioning device has a magnet. The positioning device is fixed to the top surface of the pallet 29 made of a magnetic material by magnetic force. This restricts the movement of the tray 25 on the pallet and fixes it in place. At this time, the two lever portions of the positioning device are positioned above the top surface of the pallet 29. By pressing these lever portions toward the top surface of the pallet 29, the positioning device can be easily removed from the pallet 29 using the principle of leverage.

The pallet 29 is also provided with an engagement portion (not shown) on the first side 67. The engagement portion is arranged, for example, so that the open sides of the engagement claws, which are U-shaped in plan view, face each other. The engagement portion engages with an engagement rod of a pallet conveying device (not shown) provided in the tray feeder 15. The engagement portion engages with the engagement rod (not shown), allowing the pallet 29 to be pulled out from the magazine 31 to the feeder main body 41 or inserted from the feeder main body 41 into the magazine 31.

The tray feeder 15 pulls out the pallet 29 from the stocker 13 and moves the pallet 29 to a removal position from which the head unit can remove parts. The tray feeder 15 also makes it possible to insert the pallet 29 in the removal position into an insertion position in the stocker 13 where a pallet 29 is not inserted.

The tray feeder 15 is provided with the above-mentioned pallet transport device on the front side (Y direction side) of the stocker 13. The pallet transport device has a lift table (not shown) that pulls out and places the pallet 29 from the magazine 31 stored in the stocker 13. The lift table moves the pallet 29 between two positions: a removal position where the pallet 29 can be removed in the Y direction from the front side of the stocker 13, and a parts removal position where parts can be removed by the head unit.

By specifying the storage address assigned to each magazine 31, the tray feeder 15 can position the lift table at the height of the pallet 29 that corresponds to this storage address. This allows the tray feeder 15 to pull out the pallet 29 on which the tray 25 storing the desired parts is placed.

Figure 5 is a rear view of the component mounting device 11 with a holding section, as viewed from the Y direction. The component mounting device 11 has a holding section that detachably holds the stocker 13.

The holding section is provided in either the magazine 31 or the stocker main body section 33. In the first embodiment, the holding section is provided across the magazine 31 and the pallet moving section.

In the first embodiment, the holding section is composed of a plurality of cam followers provided on the magazine 31 and a plurality of guides provided on the stocker main body 33. The cam followers are provided on the side plate portions 51 on both sides of the magazine 31. The guides are provided on the inner wall surfaces of the support brackets 71 (see FIG. 6) on both sides provided on the stocker main body 33 and protruding from the feeder main body 41 in the direction along the Y direction. The cam followers provided on the magazine 31 are arranged in a one-to-one correspondence with the guides. The cam followers of the magazine 31 are placed on the guides so as to be supported by the guides. The magazine 31 is placed on the magazine support portion 35 and can float from the magazine support portion 35 within the range of the interval above and below the magazine support portion 35. The magazine 31 can ride on the guides by displacing the guides upward by a distance C (see FIG. 6) within the range of the floating distance. This positions each magazine 31 in the stocker 13, and positions each pallet 29 contained in the magazine 31 relative to the tray feeder 15.

Figure 6 is a side view of the component mounting device 11 shown in Figure 5. More specifically, the cam followers are composed of a pair of lower cam followers 17 provided on both sides of the magazine 31, and a pair of upper cam followers 19 provided on both sides of the magazine 31 at a higher position than the pair of lower cam followers 17.

The guide also has a pair of lower-stage guides 21 on which the pair of lower-stage cam followers 17 are placed, and a pair of upper-stage guides 23 on which the pair of upper-stage cam followers 19 are placed. The lower-stage guides 21 and the upper-stage guides 23 have inclined surfaces 73 that slope upward in the Y direction at the protruding tips that protrude toward the magazine 31. Each inclined surface 73 serves as a guide surface when the cam followers ride up onto the guide's placement surface (i.e., the reference surface).

Here, the pair of upper cam followers 19 are positioned further back (Y direction side) in the stocker mounting direction than the pair of lower cam followers 17. The lower cam followers 17 and the upper cam followers 19 simultaneously ride up onto the lower guide 21 and the upper guide 23. Therefore, the upper guide 23 has an inclined surface 73 positioned further back in the stocker mounting direction than the lower guide 21.

Furthermore, a pair of left-right guides 75 are provided on the inner wall surfaces of the support brackets 71 on both sides of the stocker body 33, between the upper guide 23 and the lower guide 21. This restricts the movement of the magazine 31 in the left-right direction (X direction) as well, and positions the magazine 31 in this way.

The stocker 13 can be positioned in the front and rear positions in the insertion direction of the magazine 31 by the above-mentioned connecting mechanism. As a result, when the stocker 13 is attached to the feeder main body 41, the pallet 29 is positioned in the up/down, left/right, front/rear directions (ZXY directions) relative to the tray feeder 15. The pair of lower cam followers 17 and the pair of upper cam followers 19, the pair of lower guides 21 and upper guides 23, and the pair of left/right direction guides 75 are provided according to each magazine 31.

When the stocker 13 is positioned in the up/down, left/right, front/rear directions (ZXY directions) by the cam followers and each guide, the stocker detection sensor 63 (see FIG. 7) detects that it has been mounted in the stocker mounting section 45. The stocker detection sensor 63 sends a mounting completion signal for the stocker 13 to the control section 65 (see FIG. 10) of the component mounting device 11. When the control section 65 receives the mounting completion signal for the stocker 13 from the stocker detection sensor 63, it outputs a control signal to lock the locking mechanism 49 (see FIG. 10) provided in the feeder main body section 41. This restricts the stocker 13 from being removed from the stocker mounting section 45 and puts it in a locked state. The locking mechanism 49 is unlocked by an unlocking signal from the control section 65.

Figure 7 is a side view of the pallet moving section seen through the stocker detection sensor 63. The tray feeder 15 is equipped with a stocker detection sensor 63. The stocker detection sensor 63 is attached, for example, to the inner surface of one of the extended side plates 43 extending from the feeder main body 41. Note that the mounting position of the stocker detection sensor 63 is not limited to this.

Figure 8 is a plan view of the component mounting device 11 shown in Figure 7. The stocker detection sensor 63 detects whether the stocker 13 is at a position of the holding section where the pallet 29 can be pulled out from the stocker 13. The position of the holding section where the pallet 29 can be pulled out refers to the position where the pallet 29 is positioned relative to the tray feeder 15 via the magazine 31 by the lower cam follower 17, the upper cam follower 19, the lower guide 21, the upper guide 23, and the left-right guide 75.

Figure 9 is an enlarged view of part A near the stocker detection sensor shown in Figure 8. The stocker detection sensor 63 has a swing arm 79 that swings around a swing axis 77 in the Z-axis direction. A roller 81 that rotates around the center of rotation in the same direction as the swing axis 77 is provided at the tip of the swing arm 79. When the stocker 13 is inserted to a predetermined depth into the stocker mounting section 45 of the feeder main body 41, the swing arm 79 of the stocker detection sensor 63 is swung at a predetermined angle in the clockwise direction of arrow B via the roller 81 that is pressed against the side of the stocker 13. When the swing arm 79 is swung at the predetermined angle, the stocker detection sensor 63 outputs a detection signal indicating that the stocker 13 has been mounted in the correct position.

When the stocker 13 is inserted to a predetermined depth into the stocker mounting section 45, the magazine 31 is positioned by the above-mentioned guides, and as a result, each pallet 29 is positioned relative to the feeder main body section 41.

Figure 10 is a block diagram showing the configuration of the control system of the part mounting device 11. The part mounting device 11 further includes a control unit 65 that controls the tray feeder 15 not to operate when the stocker 13 is not held in the holding unit. The control unit 65 can be provided in a control device 83 such as a PC (Personal Computer) together with a memory unit 85.

The control unit 65 has a component mounting control unit 87, a stocker detection and determination unit 89, a tray component supply control unit 91, a lock mechanism control unit 93, and a memory unit 85. The memory unit 85 has a component mounting number memory unit 95 and a component mounting information memory unit 97.

The component mounting control unit 87 controls the board transport mechanism (not shown) and the component mounting mechanism 27 based on the mounting information in the component mounting information storage unit 97, and controls the mounting of components on the board by the head unit.

The stocker detection and judgment unit 89 checks whether the stocker 13 is in the pallet insertion/removal position (e.g., the stocker 13 is connected to the stocker mounting portion 45 of the feeder main body 41). When the stocker 13 is in the pallet insertion/removal position, the tray feeder 15 is able to insert and remove the pallet 29 from the stocker 13.

When the stocker detection and judgment unit 89 confirms that the stocker 13 is in the pallet insertion/removal position, the tray component supply control unit 91 inserts and removes the pallet 29 using the tray feeder 15.

When the lock mechanism control unit 93 detects that the stocker 13 is in the pallet insertion/removal position, it activates the lock mechanism 49 to prevent the stocker 13 from moving away from the mounting device. In addition, when the specified number of components have been mounted and it becomes necessary to replace the magazine 31, the lock mechanism control unit 93 outputs a signal to release the lock of the lock mechanism 49.

The component mounting quantity memory unit 95 sequentially stores the quantity of components consumed and reduced by the head unit. This stored quantity of components becomes a flag that releases the locking mechanism 49 when the parts stored in the tray 25 of the pallet 29 held in the magazine 31 become empty (i.e., when the stored quantity is zero).

The component mounting information storage unit 97 stores information (e.g., storage address, etc.) regarding the type and number of components, the type of board corresponding to the components, the component mounting position on the board, the tray 25 on which the components are stored, the pallet 29 on which the tray 25 is placed, and the magazine 31 in which the pallet 29 is housed.

Next, the operation of the component mounting device 11 according to the first embodiment will be described.

The component mounting device 11 according to the first embodiment includes a head unit that picks up components stored in a tray 25 and mounts them on a board. The component mounting device 11 includes a stocker 13 that is movable across an installation surface 47 and can hold a pallet 29 on which the tray 25 is placed, a holding section that detachably holds the stocker 13, and a pallet moving section (e.g., a tray feeder 15) that pulls out the pallet 29 from the stocker 13 and moves it to a removal position where the components can be removed by the head unit, or inserts the pallet 29 at the removal position into an insertion position in the stocker 13 where the pallet 29 is not inserted.

In the component mounting device 11 according to the first embodiment, the head unit picks up components stored in the tray 25 and mounts them on the board. The tray 25 storing the components is placed on a pallet 29. The component mounting device 11 pulls out the pallet 29 from the stocker 13 by the tray feeder 15 and moves it to a removal position from which the components can be removed.

The stocker 13 can mount multiple pallets 29 in multiple stages. The stocker 13 has wheels 39 that can move on the installation surface 47 on which the component mounting device 11 is installed. The stocker 13 moves on the installation surface 47 of the component mounting device 11, and is detachably connected to the holding section of the component mounting device 11 by being pushed in or pulled out while traveling. If there is an insertion position where a pallet 29 is not inserted, the stocker 13 held in the holding section can have a pallet 29 inserted by the tray feeder 15.

The tray feeder 15 sequentially moves the pallets 29 carrying the trays 25 storing parts to the removal position and replaces them. After the tray feeder 15 moves the pallet 29 to the removal position, when all the parts on the trays 25 placed on it have been consumed by the loading operation of the head unit, it then inserts the now empty pallet 29 into the insertion position of the stocker 13 where no pallet 29 has been inserted.

The stocker 13 is pulled out from the holding section as the parts on the trays 25 placed on the pallets 29 are consumed one after another, and when all the trays 25 on the pallets 29 are empty of parts, it is detached by being pulled out from the holding section. After being detached from the holding section, the stocker 13 is moved along the installation surface 47 and transported to a pre-setup position where parts can be supplied, and an operator replaces the trays 25 containing the parts with a new pallet 29. In the first embodiment, this replacement can be performed on a magazine-by-magazine basis.

The stocker 13 loaded with the new pallet 29 is transported across the installation surface 47 and is again pushed into the holding section of the component mounting device 11 and attached. If multiple stockers 13 are provided, the supply of components to this stocker 13 can be completed by simply attaching and detaching the stocker 13 to and from the tray feeder 15.

In conventional part mounting devices, when replacing a magazine, the operator would first open the door of the magazine holding section, and then insert and remove the magazines 31 one by one directly from the magazine holding section to perform the replacement work.

In contrast, in the part mounting device 11 according to the first embodiment, the supply section and magazine holding section, which were configured as one unit in the conventional part mounting device, are separated from the part mounting device and configured as a stocker 13. This stocker 13 can store a plurality of magazines 31 each holding a plurality of pallets 29, or can directly mount a plurality of pallets 29 (see below). In addition, the stocker 13 is equipped with wheels 39 and also functions as a magazine transport cart. This makes it possible for the stocker 13 to hold a plurality of pallets 29 in advance in a plurality of magazines 31 at another location, or to directly mount a plurality of pallets 29 (see below). In other words, the part mounting device 11 can easily realize the preliminary setup for the supply work of pallets 29.

As a result, the component mounting device 11 can load multiple magazines 31 into the holding section at once, which can significantly reduce the labor required for replacing pallets compared to conventional devices in which multiple magazines 31 were replaced individually. In addition, because multiple magazines 31 can be replaced at once, the downtime required for magazine replacement work can also be significantly reduced compared to conventional devices in which multiple magazines 31 were replaced individually. Therefore, the component mounting device 11 according to embodiment 1 can improve the ease of component supply by workers.

In addition, in the component mounting device 11, the stocker 13 has a magazine 31 that holds the pallets 29 and a stocker main body 33 that houses the magazine 31, and the holding section is provided in either the magazine 31 or the stocker main body 33.

In this component mounting device 11, the stocker 13 can store multiple magazines 31 in the stocker main body 33 and move on the installation surface 47.

The holding section removably holds the stocker 13 as described above. Here, the stocker 13 held in the holding section must be positioned relative to the pallet 29 held in the magazine 31 so that it can be inserted and removed by the tray feeder 15. This is because if the tray feeder 15 is misaligned from the correct position when inserting or removing the pallet 29 held in the stocker 13, the pallet 29 will interfere with a step or the like and will not be able to move smoothly.

As a result, each pallet 29 held in the magazine 31 of the stocker main body 33 is positioned via the magazine 31 or the stocker main body 33 to a position that allows smooth insertion and removal when the stocker 13 is attached to the tray feeder 15.

In the component mounting device 11, the holding section is composed of a plurality of cam followers (e.g., lower cam follower 17 and upper cam follower 19) provided on the outer wall surfaces on both sides of the magazine 31, and a plurality of guides (e.g., lower guide 21 and upper guide 23) provided on the inner wall surfaces on both sides of the tray feeder 15. The pallet 29 is positioned in the tray feeder 15 by placing the cam followers on each of the guides that are arranged in one-to-one correspondence with each other.

In this component mounting device 11, the holding section is composed of a cam follower and a guide. The cam followers are provided on the outer wall surfaces on both sides of the magazine 31. Note that providing the cam followers on the magazine 31 is just an example, and is not limited to this. The cam followers may be provided on the stocker main body 33, for example (see embodiment 2).

In a configuration in which the magazines 31 are provided with cam followers, when the stocker 13 is attached to the tray feeder 15, each magazine 31 stored in the stocker main body 33 is positioned relative to the tray feeder 15 by the holding portion.

This positioning is achieved by having the cam followers protruding from the outer wall surfaces on both sides of each magazine 31 housed in the stocker main body 33 ride up onto guides provided on the inner wall surfaces on both sides of the tray feeder 15 in a one-to-one correspondence. That is, the cam followers of the magazine 31 are placed on the guide surface that serves as the reference surface of the tray feeder 15, and the magazine 31 is placed in linear contact with the guide, thereby positioning the pallets 29 housed in each magazine 31 in the tray feeder 15 all at once. Note that, if the cam followers are provided in the stocker main body 33, for example (see below), the entire stocker main body 33 is positioned in the tray feeder 15, and the pallets 29 are positioned all at once via the stocker main body 33.

In the component mounting device 11, the magazine 31 is positioned on the tray feeder 15 by the holding section, allowing the tray feeder 15 to smoothly insert and remove each pallet 29 held in the magazine 31 of the stocker 13.

In addition, in the component mounting device 11, the cam followers include a pair of lower cam followers 17 provided on both sides of the magazine 31, and a pair of upper cam followers 19 provided on both sides of the magazine 31 at a position higher than the pair of lower cam followers 17. The pair of upper cam followers 19 are positioned further back in the stocker mounting direction than the pair of lower cam followers 17.

In this component mounting device 11, when the stocker 13 begins to be attached to the tray feeder 15, a pair of lower cam followers 17 and a pair of upper cam followers 19 provided on the outer wall surfaces on both sides of each magazine 31 simultaneously climb onto their respective guides provided on the inner wall surfaces on both sides of the tray feeder 15. When the stocker 13 is moved toward the rear, the lower cam follower 17 and the upper cam follower 19 slide along the guide surfaces of their respective guides.

If the component mounting device 11 were equipped with only a pair of lower cam followers 17, when the lower cam followers 17 are supported by the guide, the magazine 31 will have its center of gravity in front of or behind the lower cam followers 17, resulting in a forward or backward tilted posture.

In contrast, in the component mounting device 11, the lower cam follower 17 is positioned on the near side (rear side) in the insertion direction, and the upper cam follower 19 is positioned on the far side (front side) in the insertion direction, so it can be positioned horizontally without tilting forward or backward.

Furthermore, a pair of left-right guides 75 are provided on the inner wall surfaces on both sides of the tray feeder 15, between the upper guide 23 and the lower guide 21. This restricts movement of the magazine 31 in the left-right direction and positions it in place. The stocker 13 is positioned in the front-rear position of the magazine 31 in the insertion direction, for example, by a connecting mechanism provided in the stocker main body 33. This allows the pallet 29 to be positioned up-down, left-right, front-rear, and rear-facing relative to the tray feeder 15 when the stocker 13 is attached to the feeder main body 41.

In addition, in the component mounting device 11, the pallet moving section (tray feeder 15) further includes a stocker detection sensor 63 that detects whether the stocker 13 is present at the position of the holding section where the pallet 29 can be pulled out from the stocker 13.

In this component mounting device 11, the stocker detection sensor 63 detects whether the stocker 13 is located at a position of the holding unit where the pallet 29 can be pulled out from the stocker 13. In other words, the stocker detection sensor 63 detects whether the pallet 29 is positioned by the holding unit at the correct position.

When the tray feeder 15 is operated without the stocker 13 attached to the part mounting device 11, the pallet transport device attached to the tray feeder 15 may come into contact with a worker or the like. In addition, if the pallet 29 is not positioned in the correct position, the pallet transport device may not be able to insert or remove the pallet 29. By providing the stocker detection sensor 63, the part mounting device 11 can ensure safety and normal operation according to the attachment state of the stocker 13.

The component mounting device 11 also includes a control unit 65 that controls the pallet moving unit (tray feeder 15) not to operate when the stocker 13 is not held in the holding unit.

This part mounting device 11 is equipped with a control unit 65 that controls the tray feeder 15 not to operate when the stocker 13 is not held in the holding unit. The control unit 65 receives a stocker detection signal from the stocker detection sensor 63 and controls the operation or stop of the tray feeder 15. This allows the part mounting device 11 to stop the operation of the pallet transport device when the stocker 13 is not placed in the correct position, preventing poor transport of the pallet 29 and damage to the pallet 29. The part mounting device 11 also stops the operation of the pallet transport device when the stocker 13 is not attached, improving safety.

(Embodiment 2)
Next, a component mounting device 99 according to a second embodiment will be described.

Figure 11 is a rear view of the component mounting device 99 according to the second embodiment before the stocker 101 is attached. Note that in the second embodiment, the same components as those shown in Figures 1 to 10 are given the same reference numerals and redundant explanations are omitted.

The component mounting device 99 according to the second embodiment differs from the first embodiment in the configuration in which the stocker 101 stores the pallets 29 and in the configuration of the holding unit. The other configurations are the same as those of the first embodiment.

In the part mounting device 99, the stocker 101 directly mounts multiple pallets 29 without using a magazine 31. The stocker 101 is provided with a fixed rack 103 on each of the opposing inner wall portions of the stocker main body 33. The fixed rack 103 is provided with multiple pairs of left and right pallet support rails 53 spaced apart in the vertical direction, which support a pair of parallel sides of the pallet 29 from below. This allows the stocker 101 to mount any of the multiple pallets 29 so that it can be taken in and out of the stocker 101 without using a magazine 31.

Figure 12 is a rear view of the part mounting device 99 shown in Figure 11 after the stocker 101 has been installed. The holding portion of the part mounting device 99 positions the entire stocker 101 relative to the tray feeder 15. The holding portion is composed of a lower cam follower 105, an upper cam follower 107, a lower guide portion 109, an upper guide portion 111, and a left-right guide 113. The lower cam follower 105 and the upper cam follower 107 are provided in pairs protruding from the left and right outer surfaces of the stocker 101. The lower guide portion 109, the upper guide portion 111, and the left-right guide 113 are provided in pairs on the inner wall portions of, for example, the left and right extending side plate portions 43 of the tray feeder 15. In the second embodiment, the lower guide portion 109 and the upper guide portion 111 are formed as an integrated guide member 115. Therefore, a total of two pairs of guide members 115 are provided on the inner wall portions of the left and right extending side plate portions 43.

Figure 13 is a side view of the component mounting device 99 shown in Figure 12. The pair of upper stage cam followers 107 are positioned further back in the stocker mounting direction (Y direction side) than the pair of lower stage cam followers 105. The lower stage cam followers 105 and the upper stage cam followers 107 simultaneously ride up onto the lower stage guide portion 109 and the upper stage guide portion 111. Therefore, the upper stage guide portion 111 has an inclined surface 73 positioned further back in the stocker mounting direction than the lower stage guide portion 109.

A pair of left-right guides 113 are provided above the guide members 115 on the inner wall portions of the left and right extending side plate portions 43. This restricts the movement of the stocker 101 in the left-right direction (X direction) and positions it accordingly.

In this component mounting device 99, when the stocker 101 is inserted into the stocker mounting section 45 of the tray feeder 15, the lower cam follower 105 and upper cam follower 107 of the stocker 101 ride up onto the lower guide section 109 and upper guide section 111 of the tray feeder 15. As a result of this riding up, the stocker 101 as a whole rises a distance D away from the installation surface 47. At the same time, the stocker 101 is positioned left and right by the left and right guides 113. Finally, when the stocker 101 is inserted to a predetermined position, it is connected to the stocker mounting section 45 by a connecting mechanism. As a result, the stocker 101 is positioned in the up, down, left, right, front and rear directions (ZXY directions), and each mounted pallet 29 is positioned relative to the tray feeder 15.

According to the component mounting device 99 of the second embodiment, the stocker 101 can directly mount multiple pallets 29 without using a magazine 31, so a larger number of pallets 29 can be mounted compared to a structure that uses a magazine 31.

In addition, since the entire stocker 101 is directly positioned on the tray feeder 15 by the holding portion, the number of holding portions can be reduced compared to a structure in which a holding portion is provided for each magazine 31. Furthermore, since the stocker 101 can be positioned collectively, the lower guide portion 109 and upper guide portion 111 on one side can be formed as an integrated guide member 115. This allows the holding portion to have a simple structure.

Therefore, the part mounting device 99 according to the second embodiment can improve the workability of the worker in supplying parts.

Although various embodiments have been described above with reference to the drawings, it goes without saying that the present disclosure is not limited to such examples. It is clear that a person skilled in the art can conceive of various modifications, amendments, substitutions, additions, deletions, and equivalents within the scope of the claims, and it is understood that these also naturally fall within the technical scope of the present disclosure. Furthermore, the components in the various embodiments described above may be combined in any manner as long as it does not deviate from the spirit of the invention.

This disclosure is useful as a part mounting device that improves the workability of part supply by workers.

REFERENCE SIGNS LIST 11 Component mounting device 13 Stocker 15 Tray feeder 17 Lower cam follower 19 Upper cam follower 21 Lower guide 23 Upper guide 25 Tray 29 Pallet 31 Magazine 33 Stocker main body 47 Installation surface 63 Stocker detection sensor 65 Control unit

Claims (4)

A component mounting device including a head unit that picks up components stored in a tray and mounts them on a substrate,
a stocker capable of moving on an installation surface of the component mounting device and capable of holding a pallet on which the tray is placed;
a holding section for detachably holding the stocker;
a pallet moving unit that pulls out the pallet from the stocker and moves it to a take-out position where the parts can be taken out by the head unit, or that inserts the pallet at the take-out position into an insertion position of the stocker where the pallet is not inserted,
the stocker includes a magazine for storing the pallets, and a stocker body for storing the magazine ;
the holding portion is composed of a plurality of cam followers provided on outer wall surfaces on both sides of the magazine, and a plurality of guides provided on inner wall surfaces on both sides of the stocker body ,
Each of the cam followers is mounted on each of the guides arranged in a one-to-one correspondence, and the pallet is positioned in the pallet moving section.
Parts mounting device. The cam followers include a pair of lower cam followers provided on both sides of the magazine;
a pair of upper stage side cam followers provided on both sides of the magazine at a position higher than the pair of lower stage side cam followers;
the pair of upper stage side cam followers are disposed on the inner side in a mounting direction of the stocker relative to the pair of lower stage side cam followers;
The component mounting device according to claim 1. the pallet moving unit further includes a stocker detection sensor that detects whether the stocker is present at a position of the holding unit where the pallet can be pulled out from the stocker.
3. The component mounting device according to claim 1 or 2. a control unit that controls the pallet moving unit not to operate when the stocker is not held by the holding unit,
The component mounting device according to any one of claims 1 to 3.

Images