JP2004228251A - Packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a packaging machine in which a part feeding unit comprising many rows of tape feeders is provided at a part feeding section and used for packaging, and a part feeder to be used is altered immediately when the type of a substrate is changed. <P>SOLUTION: A set of left and right part feeding units each having many rows of tape feeders are arranged and a switch 26 for mounting only a part sucked from a specified part feeding unit is provided. Even when the production lot is changed and a transition is made to production of a different type of substrate, the a part feeder to be used is altered to deal with a new type of substrate immediately by simply operating the switch. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mounting machine in which a component is sucked from a component supply unit by a mounting head and mounted on a substrate to be mounted.
[0002]
[Prior art]
Conventionally, there has been a mounting machine in which a component supply unit is provided on a side of a mounting operation position where a printed circuit board is held, and a movable mounting head sucks a component from the component supply unit and mounts the component on the printed circuit board. Are known. Generally, a large number of rows of tape feeders are provided in the component supply unit so as to supply various electronic components.
[0003]
In this type of mounting machine, the type, number, mounting position, etc. of the components to be mounted vary depending on the type of printed circuit board to be produced. In order to change the type, arrangement, and the like of the tape feeders to be supplied, it is necessary to replace a large number of tape feeders arranged in the component supply unit at once.
[0004]
As an apparatus for batch exchange of tape feeders in such a case, for example, as shown in Patent Document 1, a tape exchange cart capable of mounting and holding a large number of rows of tape feeders is used, and one board type is used. When the production lot for the target is completed and the transition to the production of other types of boards is completed, prepare a cart with a tape feeder arranged to correspond to the new board type, and set it on the component supply section of the mounting machine. After removing the trolley and tape feeder attached, transport the trolley on which the tape feeder is arranged to correspond to the above-mentioned new board type to the component supply unit, and assemble the trolley and tape feeder into the component supply unit. The thing which was made to attach is known.
[0005]
[Patent Document 1]
JP 2001-127486 A
[Problems to be solved by the invention]
In the conventional apparatus as described above, when replacing the tape feeder in a batch according to the change of the board type, the carriage and the tape feeder which have been already assembled are removed, and the tape feeder is adjusted to correspond to the new board type. It takes a considerable amount of time to perform the replacement work including transporting the assembled carts to the parts supply unit and assembling, and the time required for the replacement work delays the start of production of a new board type lot, resulting in time loss. Occurs. In particular, in the case of high-mix low-volume production, the board type is frequently changed, so that the time loss due to the above-mentioned replacement work is a major problem for improving the productivity.
[0007]
In view of the above circumstances, the present invention provides a component supply unit including a plurality of rows of tape feeders in a component supply unit so that the component supply unit can be used for mounting. It is an object of the present invention to provide a mounting machine that can change a supply unit immediately, eliminates a time loss of feeder replacement, and improves productivity.
[0008]
[Means for Solving the Problems]
The mounting machine of the present invention is a mounting machine in which a component is sucked from a component supply unit by a mounting head and is mounted on a board to be mounted, wherein the component supply unit includes a plurality of rows of tape feeders. A plurality of sets of component supply units are provided, and are selectively operated by manual operation to selectively output a signal specifying one of the plurality of component supply units. Control means for controlling the mounting head so that components are sucked only from the designated component supply unit and mounted on the substrate in response to the signal.
[0009]
According to this configuration, when a mounting operation is performed for one board type, a component supplied from only the corresponding component supply unit is designated by designating one corresponding component supply unit, and the production lot is provided. When changing to the production of another board type, simply operate the changeover switch to specify the other component supply unit corresponding to the new board type, and immediately supply the other component to the new board type. The component supply unit can be changed so that components can be supplied effectively from the unit.
[0010]
Further, after the designation is switched from the one component supply unit to the other component supply unit, when the component is supplied only from the other component supply unit, the tape feeder in the one component supply unit is used. Can be exchanged and prepared so as to be compatible with the substrate type of the next production lot. Thus, during the mounting operation using only one of the component supply units, by replacing the tape feeder with the component supply unit that is not being used, even when various types of boards are sequentially produced, There is no time loss for replacing the feeder when changing the board type.
[0011]
In the mounting machine of the present invention, two sets of component supply units are arranged along one side of the board transfer path on one side of the board transfer path for loading the board into the mounting work position and unloading the board from the mount work position. Preferably, the changeover switch is operable to switch between a position designating one component supply unit and a position designating the other component supply unit. This makes it easy to replace the tape feeder with an unused part supply unit.
[0012]
In addition, it is preferable that each of the component supply units is provided on a collective exchange cart that is detachable from the mounting machine body. With this configuration, during the mounting operation using one of the component supply units, the replacement of the tape feeder of the component supply unit that is not being used is easily performed using the batch exchange cart.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 schematically show the mounting machine. In this figure, a mounting machine 1 includes a base 2, a conveyor 4 arranged on the base 2 to transport a printed circuit board 3, and component supply units 5, 5 ′ arranged on both sides of the conveyor 4. And a mounting head unit 6 provided above the base 2.
[0014]
The head unit 6 can be moved between the component supply units 5 and 5 ′ and the installation location of the printed circuit board 3 so that the components can be picked up from the component supply units 5 and 5 ′ and mounted on the printed circuit board 3. In the illustrated example, the head unit 6 is movable in the X-axis direction (the direction of the conveyor 4) and the Y-axis direction (the direction orthogonal to the X-axis direction) over a predetermined range.
[0015]
That is, both end portions of the head unit support member 7 extending in the X-axis direction are supported by the guide rail 8 in the Y-axis direction, and the head unit support member 7 is movable along the guide rail 8, and the head unit The head unit 6 is supported by the support member 7 so as to be movable along the X axis. Then, the Y-axis servo motor 11 drives the head unit support member 7 in the Y-axis direction via the ball screw 12, and the X-axis servo motor 13 drives the head unit 6 in the X-axis direction via the ball screw 14. Driving is performed.
[0016]
The head unit 6 is provided with one or a plurality of heads 16 having nozzles 15 for sucking components, a Z-axis driving unit for moving the heads 16 up and down, a rotation driving unit for rotating the heads 16, and the like. . Further, a negative pressure for component suction can be supplied to the nozzle 15.
[0017]
In such a mounting machine, as a characteristic feature of the present invention, a plurality of sets of component supply units are provided in the component supply unit 5, and in the present embodiment, one side (in FIG. The first and second component supply units 20A and 20B are arranged side by side (X-axis direction) in the component supply unit 5 (below).
[0018]
Each of the component supply units 20A and 20B is provided with a plurality of rows of tape feeders 21. Since the tape feeder 21 is generally known in the related art, its detailed illustration and description are omitted. However, the tape holding and holding the small-sized electronic components at predetermined intervals is led out from the reel, and the tape is fed to the tape feeder 21. The components are taken out from the tape by the head 16 at the component take-out portion, and the tape is fed out by the feeding mechanism as the components are taken out.
[0019]
Each of the component supply units 20A and 20B has a plurality of rows of tape feeders 21 for supplying various components, and the type of the tape feeder 21 is different between the right component supply unit 20A and the left component supply unit 20B. And the arrangement is different, each of which can supply necessary components to different types of printed circuit boards.
[0020]
Further, the component supply units 20A and 20B are individually mounted on collective exchange carts 22A and 22B detachable from the mounting machine body.
[0021]
As shown in FIG. 3, the batch exchange carts 22A and 22B have a tape feeder support 24 at the upper end of the cart main body 23, and have casters 25 at the lower end of the cart main body 23. 24 can be moved while holding a large number of rows of tape feeders. The collective exchange carts 22A and 22B are detachably mounted on the right and left halves of the component supply unit 5, respectively.
[0022]
On the front surface of the mounting machine 1, a changeover switch 26 as shown in FIG. 4 is provided. The changeover switch 26 selectively outputs a signal that designates one of the two component supply units 20A and 20B. In the illustrated example, the mark 26b on the upper part of the rotary operation unit 26a is set to the right side. (Solid line) and left (two-dot chain line). In the state of tilting to the right, a signal specifying the right component supply unit 20A is output, and in the state of tilting to the left, a signal specifying the left component supply unit 20B is output.
[0023]
In FIG. 1, the component supply unit 5 'located on the opposite side (upper side in FIG. 1) of the conveyor 4 to which the component supply units 20A and 20B are provided is also suitable as needed. Such as a tape feeder and a tray feeder. Further, the mounting machine 1 is provided with a component recognition camera (not shown) for determining a suction failure or detecting a shift in a suction position by component recognition after component suction by the head unit 6.
[0024]
FIG. 5 schematically shows a control system of the mounting machine in a block diagram. In this figure, reference numeral 30 denotes a controller provided in the mounting machine. The controller 30 controls the Z-axis motor 27 provided in the conveyor 4 for transporting the printed circuit board, the X-axis motor 13, the Y-axis motor 11, and the head unit 6. , Θ-axis motor 28 and the like are controlled. A signal from the changeover switch 26 is input to the controller 30.
[0025]
The controller 30 includes a determination unit 31, a control unit 32, and a memory 33.
[0026]
The determination means 31 determines which of the two component supply units 20A and 20B is to be selected according to a signal from the changeover switch 26. The control means 32 controls the loading and unloading of the printed circuit board 3 by the conveyor 4 and controls the motors so as to perform a mounting operation based on board data and the like read from a memory according to a board type to be produced. In accordance with the determination result of the determination means 31, control is performed such that components are picked up from only one of the left and right component supply units 20A and 20B.
[0027]
FIG. 6 shows an example of control by the controller 30 in a flowchart. When the process of this flowchart starts, the controller 30 first carries in the printed circuit board 3 by controlling the conveyor 4 (step S1), and then inputs a signal from the changeover switch 26 (step S2). It is determined whether or not the component supply unit specified by the switch 26 is right (step S3).
[0028]
If it is determined in step S3 that the component is right, the component is sucked from the component supply unit 20A on the right side (step S4), and the suction component is recognized based on the image captured by the component recognition camera (step S4). S5) Control is performed to mount components on the printed circuit board 3 (step S6), and it is checked whether or not all components have been mounted (step S7). Steps S4 to S6 are performed until all components have been mounted. Is repeated. When the mounting of all the components is completed, the printed circuit board 3 is carried out (step S8).
[0029]
If it is determined in step S3 that the component is not right (it is left), the component is sucked from the component supply unit 20B on the left side. The process of recognition and mounting is repeated until the mounting of all components is completed (steps S9 to S12), and when the mounting of all components is completed, the printed circuit board is unloaded (step S8).
[0030]
The operation of the apparatus of the present embodiment as described above will be specifically described.
[0031]
In the component supply unit 20A on the right side of the component supply unit 5, the type and arrangement of the tape feeder 21 are set in advance so that necessary components can be supplied to, for example, the board 3 of the first type. In the supply unit 20B, for example, the type and arrangement of the tape feeders 21 are set in advance so that necessary components can be supplied to the second type board 3.
[0032]
When the first type board 3 is mounted, the right component supply unit 20A is designated by operating the changeover switch 26, and accordingly, the component is supplied only from the right component supply unit 20A. It is sucked and mounted on the first type board 3. Next, when the production lot is changed and the second type of board is to be mounted, the switch 26 is switched to designate the left component supply unit 20B, and accordingly, the mounting of the second type of board on the board of that type is performed. Sometimes, components are sucked only from the left component supply unit 20B.
[0033]
Even when the type of the board 3 produced in this way changes, the component supply unit to be used can be immediately changed only by switching the changeover switch 26.
[0034]
Further, when a third type of board is scheduled to be mounted in the next production lot, during the mounting operation on the second type of production lot using the component supply unit 20B on the left, The component supply unit 20A can be replaced with a component corresponding to a third type of board. That is, a component supply unit in which an arrangement of tape feeders and the like are set so as to correspond to the third type is mounted on an external collective exchange cart (not shown), and the collective exchange cart 22A of the right component supply unit 20A is mounted. After being removed from the machine body, the part supply unit can be replaced by installing a collective exchange trolley on which the part supply unit corresponding to the third type is mounted. By performing such a replacement operation of the component supply unit during the mounting operation on the production lot of the second type, the changeover switch is operated even when shifting to the mounting operation on the substrate 3 of the third type. By simply doing so, the component supply unit corresponding to the third type of board 3 can be immediately provided for the mounting operation.
[0035]
In this way, even in the case of multi-product small-quantity production in which many types of printed circuit boards are sequentially mounted in small quantities, the other component supply unit is replaced during the mounting operation using one component supply unit. It is possible to substantially eliminate the time loss of the component supply unit replacement work when the lot changes.
[0036]
In the mounting machine, a function as shown in FIG. 7 is added in order to quickly perform preparations when the remaining amount of components of the feeder is reduced due to use and replacement of the feeder when the components run out. Is also good.
[0037]
In this case, a spare feeder (not shown) for replacement when a component runs out is prepared near the component supply unit of the mounting machine, and a computer constituting the controller is prepared for replacement of the feeder. A check box (not shown) that can be displayed to confirm the completion of the process is provided.
[0038]
Then, as processing by the controller, first, in step S21, it is checked whether or not the remaining amount of the components of the feeder has decreased to a predetermined value or less. A request message is displayed (step S22).
[0039]
After confirming this message, the operator removes a reel or the like of the same kind as the reduced part from the storage location, sets it in the spare feeder, and operates the input means such as a keyboard when the preparation work is completed. Put a tick mark in the above check box.
[0040]
The controller determines whether or not the preparation work has been completed based on whether or not a check mark has been put in the check box (step S23). If the preparation work has not been completed, the controller returns to step S22 and issues a spare preparation request. The spare preparation request is cleared after the preparation work is completed (step S24).
[0041]
In this way, the operator can confirm that the preparation work has been performed by looking at the check box, and the administrator can open the check box from another computer and observe the check status. It is possible to grasp the status of the preparation work of many workers.
[0042]
【The invention's effect】
As described above, the mounting machine of the present invention is provided with a plurality of sets of component supply units each having a plurality of rows of tape feeders, and provided with a changeover switch, and only from the component supply unit designated by the changeover switch. Because components are picked up and mounted, even when the production lot changes and the production of another type of board is started, simply operate the changeover switch to effectively load components for the new board type. The component supply unit to be used can be changed immediately so that it can be supplied, and time loss due to replacement of the component supply unit can be substantially eliminated. For this reason, even in the case of performing a high-mix low-volume production, the production efficiency can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a schematic plan view of a mounting machine according to an embodiment of the present invention.
FIG. 2 is a schematic front view of a portion where the head unit of the mounting machine is supported.
FIG. 3 is a side view of the collective exchange cart.
FIG. 4 is an enlarged view of a changeover switch.
FIG. 5 is a block diagram of a control system.
FIG. 6 is a flowchart illustrating an example of control.
FIG. 7 is a flowchart illustrating another example of control.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mounting machine 3 Printed circuit board 5 Component supply part 6 Head unit 20A, 20B Component supply unit 22A, 22B Batch exchange cart 26 Changeover switch 30 Controller

Claims (3)

In a mounting machine in which a component is sucked from a component supply unit by a mounting head and mounted on a substrate to be mounted, a plurality of sets of component supply units each having a multi-row tape feeder are provided in the component supply unit. A changeover switch that is arranged and operated by manual operation to selectively output a signal designating one of the plurality of component supply units, and a changeover switch designated according to a signal from the changeover switch. Control means for controlling the mounting head so that components are sucked only from the component supply unit and mounted on the substrate. Two sets of component supply units are arranged on one side of the board transfer path for loading the board into the mounting work position and unloading the board from the mount work position so as to be arranged in a direction along the board transfer path. 2. The mounting machine according to claim 1, wherein the changeover switch is operable to switch between a position specifying one component supply unit and a position specifying the other component supply unit. The mounting machine according to claim 1, wherein each of the component supply units is provided on a collective exchange trolley detachable from the mounting machine body.

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