JP4220036B2 - Feeder exchange device for mounting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention efficiently replaces a feeder disposed in a component supply unit in a mounting machine that picks up an electronic component from a component supply unit by a mounting head and mounts the electronic component on a substrate such as a printed board or a ceramic substrate. The present invention relates to a feeder exchange device.
[0002]
[Prior art]
Conventionally, a mounting machine in which an electronic component such as an IC is sucked from a component supply unit by a head having a suction nozzle, transferred onto a substrate installed in the component mounting unit, and mounted at a predetermined position on the substrate. Is generally known. In this mounting machine, a head unit having one or more heads is usually movable in the X-axis direction and the Y-axis direction. In addition, a large number of feeders are disposed in the component supply unit so that various components can be supplied. For example, a large number of tape feeders are disposed in parallel.
[0003]
In this type of mounting machine, when the type of board to be mounted changes, the type and number of components mounted on the board change, so replace the feeders arranged in the component supply unit accordingly. A so-called setup change is required. In such a case, it is very time-consuming to change a large number of feeders individually, and the setup change takes a long time.
[0004]
For this reason, a method of simplifying feeder replacement work and shortening time by exchanging a large number of feeders at once using a movable collective exchange cart has been known. That is, when using the above-mentioned collective carriage, a plurality of feeders are mounted in advance on a plurality of collective exchange trucks in an arrangement corresponding to each board, and the collective exchange carriage selected according to the type of board to be mounted is used as the component supply unit. set. Then, when changing the setup according to the change of the type of board to be mounted, etc., after removing the collective exchange cart set in the component supply unit and moving it to the outside, another collective exchange cart to be exchanged It is moved from the outside to a position corresponding to the component supply unit, and is fitted into the component supply unit and fixed. In this way, the setup can be changed in a shorter time than when the feeders are individually changed.
[0005]
[Problems to be solved by the invention]
Even when the feeder is replaced using a batch exchange truck as described above, the work for removing the batch exchange truck from the parts supply section and moving it to the outside, or the position corresponding to another batch exchange truck for the parts supply section Since the operation of moving to and setting the component supply unit requires manpower, there is a limit to simplifying the operation and improving the efficiency.
[0006]
In view of such circumstances, the present invention provides a feeder replacement device in a mounting machine that can automate the replacement work of a large number of feeders arranged in a component supply unit and can greatly save the labor of an operator. Objective.
[0007]
[Means for Solving the Problems]
The present invention provides a component supply unit in which a large number of feeders for supplying components are arranged, a component mounting unit on which a board is installed, and the component mounting unit by adsorbing components from a feeder installed in the component supply unit. In a mounting machine having a head mounted on the substrate, a feeder unit that collectively holds a plurality of feeders, a feeder replacement external device provided outside the component supply unit, and the feeder replacement external A transfer device for transferring a feeder unit between the apparatus and the component supply unit, and the feeder replacement external device includes first and second feeder unit support units for supporting the feeder unit , the serial two feeder unit support portion, while supporting the feeder units, respectively, from the transfer for the position corresponding to the component supply unit to the standby position of the side I, provided with a position changing means for enabling repositioned each other physician, the feeder unit is movable over a predetermined position and the component supply unit on the feeder unit support portion in the transfer for the position guide The transfer device includes a movable member that is detachably connected to the feeder unit, a predetermined position on the feeder unit support portion at the predetermined position of the component supply portion, and the feeder unit support portion at the transfer position. In order to move the movable member over a predetermined range, the movable member is reciprocated over a predetermined range which can be moved by the guide means .
[0008]
According to this invention, when the feeder needs to be replaced due to a change in the type of the substrate to be mounted or the like, the feeder is located at the transfer position of the feeder replacement external device from the component supply unit by the transfer device. After being transferred to the unit support, the position of the feeder unit support is changed by the position changing means of the feeder replacement external device, and another feeder unit that is in the standby position is placed in the placement position. The feeder unit is pulled into the component supply unit by the transfer means. In this way, all replacement of feeder units is automatically performed.
[0009]
In addition, the operation of replacing the feeder in the feeder unit as a preparatory operation for subsequent setup change can be performed on the feeder unit on the feeder unit support portion in the standby position in the feeder replacement external device even during the mounting operation.
[0010]
In the present invention, the feeder replacement external device has a pivotable arm whose center is pivotally supported, and is equipped with first and second feeder unit support portions on both sides of the arm. It is preferable that the position of each feeder unit support portion can be changed between the transfer position and the standby position by rotation, and the arm and the arm driving means for driving the arm constitute position changing means.
[0011]
If it does in this way, in the external apparatus for feeder replacement | exchange, the position change of a feeder unit support part will be easily performed by rotation of an arm.
[0012]
Each of the feeder unit support portions is pivotally supported so as to be relatively rotatable with respect to the arm, and a posture maintaining means for maintaining the feeder unit in a fixed posture when the arm is rotated is provided for each of the feeder unit support portions. It is preferable.
[0013]
The posture maintaining means connects, for example, a fixed shaft portion provided concentrically with the rotation center of the arm and a shaft portion of a feeder unit support portion pivotally supported by the arm via a winding member. Just do it.
[0014]
In this way, the feeder unit on the feeder unit support section does not reverse or tilt even if the arm rotates to change the position of the feeder unit support section in the feeder replacement external device. The feeder is prevented from falling off.
[0015]
In addition, the transfer device includes a transfer cylinder as a transfer drive unit, a movable member reciprocated by the transfer cylinder, a locking pin that can be engaged with and disengaged from the feeder unit, It is preferable to provide a connecting cylinder that operates the locking pin.
[0016]
By doing so, the connection and release of the feeder and the movable member are automatically performed by the operation of the connecting cylinder.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
[0018]
FIG. 1 schematically shows an example of a mounting machine equipped with a feeder exchange device of the present invention. In this figure, a substrate conveying conveyor 2 is arranged on the base of the mounting machine body 1, and a substrate 3, such as a printed circuit board, is conveyed on the conveyor 2 and stopped at a predetermined mounting work position. It is like that.
[0019]
Component supply units 4 are provided on both sides of the conveyor 2. A large number of feeders are disposed in the component supply unit, for example, multiple rows of tape feeders are disposed.
[0020]
Further, above the base of the mounting machine body 1, a component mounting head unit 5 is movable in the X-axis direction (the direction of the conveyor 2) and the Y-axis direction (the direction perpendicular to the X-axis on the horizontal plane). Equipped. Although a mechanism for moving the head unit 5 is omitted, for example, a head unit support member extending in the X-axis direction is held movably in the Y-axis direction by the fixed rail on the base, and the head unit support member The head unit 5 is mounted so as to be movable in the X-axis direction via a guide member, and the head unit support member is operated in the Y-axis direction via a ball screw by a Y-axis servo motor, and the head is driven via a ball screw by an X-axis servo motor. The unit may be operated in the X-axis direction with respect to the head unit support member.
[0021]
The head unit 5 is equipped with one or more heads (not shown) so as to be movable up and down, and the head unit 5 is moved up and down and rotated by a Z-axis drive mechanism and an R-axis drive mechanism composed of a servo motor or the like. A nozzle for component suction is provided at the tip of the head, and the negative pressure is supplied from the negative pressure supply means to the head during the mounting operation so that the component is sucked to the nozzle by suction force. It has become.
[0022]
A feeder exchange device is provided for the component supply unit 4 of such a mounting machine. The feeder exchange device includes a feeder unit 6 having a plurality of feeders and a feeder exchange provided outside the component supply unit 4. And a transfer device 8 for transferring the feeder unit 6 between the feeder replacement external device 7 and the component supply unit 4. In the example shown in FIG. 1, two sets of component replacement devices are provided for the component supply unit 4 on one side (the lower side in the drawing) of the mounting machine body 1. Two feeder units 6 are set in the section, and each feeder exchange external device 7 is equipped with a spare feeder unit 6.
[0023]
The structure of the feeder exchange device will be specifically described with reference to FIGS. The feeder unit 6 has a plurality of rows of tape feeders 10 and is housed in a frame 12 in a state where these tape feeders 10 are attached to a feeder plate 11 and coupled together ( 3 to 6). The frame 12 has both side walls and a bottom wall, and the upper ends of both side walls are fixed to the feeder plate 11.
[0024]
Since the tape feeder 10 is generally known, detailed illustration and description of the structure are omitted. However, in brief, small pieces of electronic components such as ICs, transistors, capacitors, etc. are stored and held at predetermined intervals. The tape is led out from the reel 14, and the tape is intermittently fed out as the parts are picked up by the head by a tape feeding mechanism driven by an air cylinder or the like.
[0025]
As shown in FIGS. 2 to 5, the feeder replacement external device 7 supplies the first and second feeder unit support portions 16 </ b> A and 16 </ b> B that support the feeder unit 6 and the feeder unit support portions 16 </ b> A and 16 </ b> B as components. Position changing means for changing the position between the transfer position corresponding to the section 4 and the standby position on its side is provided. The position changing means includes a rotatable arm 17 on which a rotation shaft at the center is pivotally supported, and an arm driving means 18 for driving the arm 17. Second feeder unit support portions 16A and 16B are attached, and the positions of the feeder unit support portions 16A and 16B are changed by the rotation of the arm 17 over the transfer position and the standby position.
[0026]
The structure of the feeder replacement external device 7 will be described more specifically. The base portion 19 of the feeder replacement external device 7 is attached to the side surface portion of the mounting machine body 1 via a bracket 20. A rotating shaft 22 is rotatably supported in a cylindrical fixed frame 21 fixed to the center, and the central portion of the arm 17 is connected to the rotating shaft 22. The base portion 19 incorporates a driving means 18 such as a motor with a speed reducer, and the rotating shaft 22 is connected to the driving means 18. When the first feeder unit support portion 16A is in the transfer position and the second feeder unit support portion 16B is in the standby position when the arm 17 is rotated 180 ° from this state when the arm 17 is at the position indicated by the solid line in FIG. The second feeder unit support portion 16B is configured to be a transfer position, and the first feeder unit support portion 16A is configured to be a standby position.
[0027]
Each of the feeder unit support portions 16A and 16B is formed in a frame shape having both side portions and a bottom portion so that the feeder unit 6 can be held, and a shaft portion 23 is fixed below the bottom portion. As a result, the feeder unit support portions 16 </ b> A and 16 </ b> B are attached to the arm 17 so as to be relatively rotatable.
[0028]
Posture maintenance means is provided for each of the feeder unit support portions 16A and 16B. In the illustrated embodiment, a fixed pulley 24 provided on the cylindrical fixed frame 21 (a fixed shaft portion concentric with the rotation center of the arm) and a pulley 25 provided on the shaft portion 23 of the feeder unit support portions 16A and 16B. And the attitude | position maintenance means is comprised by the belt 26 (wrapping member) wound around these pulleys 24 and 25. As shown in FIG. By this posture maintaining means, the feeder unit support portions 16A and 16B are maintained in a fixed posture even when the arm 17 is rotated, and the state where the feeder plate 11 of the feeder unit 6 is substantially horizontal is maintained. Yes. Reference numeral 27 denotes a tensioner for the belt 26. Instead of the belt 26 and the pulleys 24 and 25, a chain and a sprocket may be used.
[0029]
Guide means are provided between the feeder unit support portions 16 </ b> A and 16 </ b> B and the feeder unit 6. The guide means includes, for example, a fixed rail 28 provided at the upper ends of both sides of the feeder unit support portions 16A and 16B, a movable rail 29 slidably coupled to the fixed rail 28 via a roller, and a feeder. The guide unit 30 is provided on both sides of the unit 6 and is slidably coupled to the movable rail 29 via a roller. The feeder unit 6 is mounted on the feeder unit support portion by the expansion and contraction of the guide means. The predetermined position (hereinafter referred to as a predetermined position on the external device side) and a predetermined position on the component supply unit (hereinafter referred to as a predetermined position on the component supply unit side) are movable.
[0030]
Further, a corresponding lock portion 31 is provided on one side surface portion of the feeder unit 6 and one side portion of the feeder unit support portions 16A and 16B corresponding thereto, so that the feeder unit 6 is located at a predetermined position on the external device side. When the feeder unit 6 is reached, the feeder unit 6 is fixed to the feeder unit support part by engaging the lock part on the feeder unit support part side with the urging force of the urging means such as a spring. It has become.
[0031]
The transfer device 8 includes a transfer drive means, a movable member reciprocated in the transfer direction by the transfer drive means, and a connecting means for detachably connecting the movable member and the feeder unit. It is equipped in the side of the feeder unit installation part of the component supply part 4.
[0032]
That is, as shown in FIG. 7 and FIG. 8, the side portion of the feeder unit installation portion in the component supply portion is composed of a rodless cylinder that extends in the feeder unit loading / unloading direction (transfer direction) as a transfer drive means. A transfer cylinder 33 is provided, and a plate-like movable member 34 that is reciprocated by the transfer cylinder 33 is provided on the upper surface side of the transfer cylinder 33. On the upper surface of the distal end portion of the movable member 34, a bent lever 35 that can swing around the vertical axis, a locking pin 36 pivotally attached to one end of the lever 35, and the other end of the lever 35 A connecting means comprising a connecting cylinder 37 to which a piston rod is connected is provided.
[0033]
An engaging hole 38 corresponding to the locking pin 36 is formed on the side surface of the feeder unit 6, and the locking pin 36 can be engaged with and disengaged from the engaging hole 38. The engaging and disengaging operation of the locking pin 36 is performed via the. When the locking pin 36 is engaged with the engagement hole 38, the movable member 34 is connected to the feeder unit 6, so that the feeder unit 6 moves in the transfer direction according to the operation of the transfer cylinder 33. It is supposed to move.
[0034]
A lock release lever 39 is provided on the lower surface of the distal end portion of the movable member 34. The lock release lever 39 is moved to a position where the movable member 34 can be connected to the feeder unit 6 in a state where the feeder unit 6 is in the predetermined position on the external device side and the lock portion 31 is locked. The lock portion 31 is brought into contact with the lock portion 31 to automatically release the lock.
[0035]
Furthermore, the component supply unit 4 is provided with a clamp device that clamps the feeder plate 11 in a state where the feeder unit 6 is in a predetermined position on the component supply unit side. This clamp device has a structure as shown in FIG. . That is, the guide member 42 which has the recessed part 43 so that the both-sides edge part of the feeder plate 11 of the feeder unit 6 may be guided to the both-sides upper part of the frame 41 provided in the mounting machine main body, and the positioning of the feeder plate 11 in the left-right direction The clamp plate 25 is provided at a position below the feeder plate 11, and the clamp cylinder 46 is provided below the clamp plate 25. A pair of rods 47 and 48 are connected to the cylinder body side and the piston side of the cylinder 46, and the tips of the rods 47 and 48 are connected to links 49 and 50 for pushing up the plate.
[0036]
Then, when the clamping cylinder 46 is actuated in the extending direction from the state shown in FIG. 9, the clamp plate 45 is actuated in the upward direction via the rods 47 and 48 and the levers 49 and 50, so that the feeder plate 11 is moved. The feeder plate 11 is clamped in a state of being pushed up and pressed against the reference surface 51 formed by the upper surface of the concave portion 43 of the guide member 42, and the clamp is released when the clamp cylinder 46 is operated in the shortening direction from this state. It has become.
[0037]
An air passage is formed in the feeder plate 11 and the clamp plate 45, and these air passages communicate with each other at the time of clamping so that compressed air can be supplied to an air cylinder provided in each tape feeder.
[0038]
The operation of the apparatus of the present embodiment as described above will be described next.
[0039]
During the mounting operation of the mounting machine, the feeder unit 6 derived from the feeder unit support part (for example, the first feeder unit support part 16A) at the transfer position in the external device 7 is set at a predetermined position on the component supply part side. Thus, the feeder unit 6 is used for mounting in a state of being clamped by the clamp device, that is, the components are sucked from the feeder 10 of the feeder unit 6 by the head unit 5 of the mounting machine body.
[0040]
During this component mounting, as a preparatory work for subsequent feeder replacement, the feeder unit 6 supported by the feeder unit support part (for example, the second feeder unit support part 16B) in the standby position meets the demand. Should be installed.
[0041]
When the feeder unit 6 needs to be replaced when mounting another type of substrate after mounting on a specific type of substrate, the clamp of the clamping device is first released and then the movable member 34 of the transfer device 8 is used. When the transfer cylinder 33 is operated in a state where the feeder unit 6 is connected to the feeder unit 6, the feeder unit 6 is pushed out of the component supply unit 4 and moved to a predetermined position on the external device side. Then, after the connection between the movable member 34 and the feeder unit 6 by the connecting means is released, the transfer cylinder 33 is operated so as to retract the movable member 34 to the component supply unit side. Thereby, when the lock release lever 39 moves backward, the lock portion 31 is automatically locked, and the feeder unit 6 is fixed to the feeder unit support portion 16A.
[0042]
Subsequently, the arm 17 of the external device for feeder replacement is rotated by 180 ° as shown by an arrow in FIG. 3, so that the first feeder unit support portion 16A is in the standby position, and the second feeder unit support portion 16B. The position is changed so that becomes the transfer position. Then, when the transfer cylinder 33 of the transfer device 8 is actuated again, the movable member 34 moves forward to a position corresponding to the feeder unit 6, and the lock portion 31 is moved by the lock release lever 39 provided on the movable member 34. Is released, and the movable member 34 and the feeder unit 6 are coupled by the coupling means. Then, when the transfer cylinder 33 is operated in the retracting direction, the feeder unit 6 on the second feeder unit support section 16B is retracted to a predetermined position on the component supply section side, and is clamped by the clamp device for mounting. It will be ready to serve.
[0043]
Thus, all replacement of the feeder unit 6 is automatically performed. Therefore, the setup can be changed easily and efficiently in a short time as compared with the case of using a conventional batch exchanging cart. Further, as a preparatory work for the subsequent setup change, the work of replacing the feeder 10 in the feeder unit 6 is performed on the feeder unit 6 on the feeder unit support portion in the standby position in the feeder replacement external device 7 even during the mounting work. Therefore, the mounting work is not interrupted by the preparation work, and the work can be performed efficiently.
[0044]
In the above embodiment, two sets of feeder exchange devices are provided for the component supply unit 4 on one side of the mounting machine body 1. However, one set of feeder exchange devices is provided for half of the component supply unit 4. The remaining half space may be equipped with a tray feeder or the like. Alternatively, one or two sets of feeder exchange devices may be provided for the component supply units 4 on both sides of the mounting machine body.
[0045]
【The invention's effect】
As described above, the present invention includes a feeder unit that collectively holds a plurality of feeders, an feeder replacement external device, and a transfer device, and the feeder replacement external device includes first and second feeder units. A support portion and position changing means for changing the position between the transfer position and the standby position are provided. The transfer device includes a movable member detachably connected to the feeder unit and the movable member. Since the transfer drive means for reciprocating over a predetermined range is provided, when transferring the feeder, the operation of taking out the feeder unit from the component supply unit and attaching another feeder unit is performed as described above. It can be done automatically by the operation. In addition, it is possible to perform preparatory work such as plate replacement on the feeder unit on the feeder unit support portion at the standby position of the feeder replacement external device during mounting.
[0046]
Therefore, the setup can be changed easily and efficiently in a short time.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a mounting machine equipped with a component replacement apparatus of the present invention.
FIG. 2 is a plan view of a component replacement apparatus in the mounting machine.
FIG. 3 is a front view of the component replacement apparatus.
FIG. 4 is an enlarged front view of a part of the component replacement apparatus.
FIG. 5 is a vertical side view of the component replacement apparatus.
FIG. 6 is a side view of the feeder unit.
FIG. 7 is a partially cutaway enlarged plan view of a transfer device arrangement portion.
FIG. 8 is a partially cutaway enlarged side view of a transfer device arrangement portion.
FIG. 9 is a front view of the clamp device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mounting machine main body 3 Board | substrate 4 Component supply part 5 Head unit 6 Feeder unit 7 Feeder exchange external device 8 Transfer device 10 Tape feeder 16A, 16B Feeder unit support part 17 Arm 18 Arm drive means 26 Attitude maintenance belt 33 Transfer Mounting cylinder 36 Pin 37 Connecting cylinder

Claims (5)

A component supply unit in which a large number of feeders for component supply are arranged, a component mounting unit in which a substrate is installed, and a component that is sucked from a feeder installed in the component supply unit on the substrate of the component mounting unit In a mounting machine including a mounting head, a feeder unit that collectively holds a plurality of feeders, a feeder replacement external device provided outside the component supply unit, the feeder replacement external device, and the component and a transfer device for transferring a feeder unit between the supply unit, to the external device for the feeder replacement, first, and second feeder unit support portion, the upper Symbol two feeders for supporting the feeder unit the unit support portion, while supporting the feeder units, respectively, over the standby position of the side from transfer for the position corresponding to the component supply section, each other Provided with a position changing means for enabling repositioning, the feeder unit, a guide means for the movable over the predetermined position and the component supply unit on the feeder unit support portion in the transfer for position provided, the the transfer device includes a movable member that is detachably connected to the feeder unit, to move the feeder unit over a predetermined position on the feeder unit support portion in a predetermined position and the transfer for the position of the component supply section, A feeder exchanging apparatus in a mounting machine, comprising: a transfer driving means for reciprocating the movable member over a predetermined range movable by the guide means .   The external device for replacing the feeder has a pivotable arm whose center is pivotally supported, and is equipped with first and second feeder unit support portions on both sides of the arm. 2. The position change means comprises the arm and the arm driving means for driving the feeder unit support section so that the position of the feeder unit support section can be changed between the transfer position and the standby position. Feeder exchange device for mounting machines.   Each feeder unit support portion is pivotally supported so as to be rotatable relative to the arm, and a posture maintaining means is provided for each feeder unit support portion to maintain the feeder unit in a fixed posture when the arm is rotated. A feeder exchanging device in the mounting machine according to claim 2.   The posture maintaining means includes a fixed shaft portion concentrically provided at the center of rotation of the arm and a shaft portion of a feeder unit support portion pivotally supported by the arm via a winding member. The feeder exchange apparatus in the mounting machine of Claim 3 characterized by the above-mentioned. The transfer device includes a transfer cylinder as a transfer drive unit, a movable member reciprocated by the transfer cylinder, a lock pin that can be engaged with and disengaged from the feeder unit, and the lock The feeder exchange device in the mounting machine according to any one of claims 1 to 4, further comprising a connecting cylinder that operates a pin.

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