JP2007184309A - Carrying machine, mounting machine, printing machine, and inspection machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carrying machine capable of simplifying structure and reducing costs. <P>SOLUTION: The carrying machine 31 carries a substrate P. The carrying machine 31 comprises a pair of conveyors 1, 2 for carrying substrates arranged in parallel corresponding to both the sides of the substrate P, a traveling means in a widthwise direction for moving the pair of conveyors 1, 2 in mutually contacting and separating directions, and a transmissive substrate detection sensor 6 for detecting the presence of the substrate P by the blocking of projection light L projected toward a light receiving unit 62 from a light source 61. The light source 61 and the light receiving unit 62 of the substrate detection sensor 6 are provided at one conveyor in a pair of conveyors 1, 2 in an embodiment where the pair of conveyors 1, 2 is arranged up and down while sandwiching a substrate conveyance path. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transporter that transports a substrate, and further relates to a mounting machine, a printing machine, and an inspection machine using the transporter.

  2. Description of the Related Art Conventionally, a mounting machine that mounts electronic components on a board is provided with a transport machine for carrying the board to the mounting position or unloading the board from the mounting position.

  The transport machine includes a pair of conveyors that extend along the substrate transport direction and are arranged in parallel with a space between each other. The substrate is transported by being driven to rotate.

  Further, the conveyor is configured such that the other conveyor (movable conveyor) is movable in the contact / separation direction with respect to the one conveyor (fixed conveyor) of the pair of conveyors, so that the interval between the pair of conveyors can be adjusted. ing. And by adjusting the interval between the pair of conveyors according to the widths of a plurality of types of substrates having different sizes (widths), substrates of all sizes can be conveyed.

  Moreover, in such a transport machine, as shown in Patent Document 1, a substrate detection sensor for detecting whether or not the substrate is arranged at the mounting position is provided.

The transporter shown in the same document is provided with a transmission type having a projector and a light receiver as a substrate detection sensor. The light projector is provided at the upper part of the fixed conveyor and the light receiver is provided at the lower part of the movable conveyor. Thus, the projected light is projected obliquely downward from the light projector at the upper part of the fixed conveyor toward the light receiver at the lower part of the movable conveyor. And when a board | substrate does not exist in the detection position by a detection sensor, while the projection light projected from the light projector is light-received by a light receiver, when a board | substrate exists in a detection position, a projection light is interrupted | blocked by a board | substrate. So that it is not received by the receiver. Thus, the presence of the substrate is detected based on whether or not the projection light is received by the light receiver.
JP 2003-174282 (page 3, right column, FIG. 3)

  However, in the transport machine shown in Patent Document 1, since the projector for the substrate detection sensor is provided on the fixed conveyor and the light receiver is provided on the movable conveyor, the substrate size is changed and the distance between the pair of conveyors is changed. Is changed, the distance between the projector and the light receiver also changes. As a result, the amount of light received by the light receiver also changes. Therefore, in order to maintain a predetermined detection accuracy, it is necessary to adjust sensitivity, a threshold value, and the like. For this reason, a separate sensor adjustment means for changing the substrate size, such as an amplifier circuit and an automatic tuning control program, is required, resulting in a problem that the structure is complicated and the cost is increased. Further, when the substrate size is changed, a tuning operation is required, the control operation becomes complicated, and an extra tuning time is required, which causes a problem that the production efficiency is lowered.

  The present invention provides a transporter, a mounting machine, a printing machine, and an inspection machine that can solve the above-described problems of the prior art, simplify the structure and reduce the cost, and improve the production efficiency. For the purpose.

  In order to achieve the above object, the present invention provides the following means.

[1] A transporter for transporting a substrate,
A pair of substrate transfer conveyors arranged in parallel corresponding to both sides of the substrate;
A width direction moving means for moving the pair of conveyors in a direction of approaching and separating from each other;
A transmission type substrate detection sensor that detects the presence of the substrate by blocking the projection light projected from the projector toward the light receiver,
A transporter, wherein a projector and a light receiver of the substrate detection sensor are provided on one conveyor of the pair of conveyors in a manner in which the projector and the light receiver are arranged above and below the substrate transport path.

[2] Of the pair of conveyors, one conveyor is configured as a fixed conveyor and the other conveyor is configured as a movable conveyor.
The transporting machine according to claim 1, wherein the movable conveyor is configured to move with respect to the fixed conveyor.

  [3] The transport machine according to 1 or 2 above, wherein the light receiver is disposed above the substrate transport path.

[4] A mounting machine that mounts electronic components on a substrate transported by a transporting machine,
The mounting machine comprising the transport machine according to any one of the preceding items 1 to 3.

[5] A printing machine configured to apply paste to a substrate conveyed by a conveyance machine,
The said conveyance machine was comprised with the conveyance machine of any one of preceding clauses 1-3, The printing machine characterized by the above-mentioned.

[6] An inspection machine configured to inspect a mounting state of electronic components on a substrate conveyed by a conveyance machine,
The said conveyance machine was comprised with the conveyance machine of any one of preceding clauses 1-3, The inspection machine characterized by the above-mentioned.

  According to the transport device according to the invention [1], even if the distance between the pair of conveyors is changed by changing the substrate type, the distance between the light projector and the light receiver is constant without changing. The accuracy can be maintained as it is. Therefore, there is no need for a sensor adjustment means for adjusting the board detection sensor when changing the board size, the number of parts can be reduced, and the structure can be simplified and the cost can be reduced. Furthermore, since no sensor adjustment time is required, production efficiency can be improved.

  According to the carrier according to the invention [2], the electrical wiring structure for the substrate detection sensor can be simply completed, and the structure can be further simplified.

  According to the transport device according to the invention [3], since the thin light receiver is disposed on the upper side of the conveyor, the configuration on the conveyor can be simply finished.

  According to the said invention [4], the mounting machine which has the same effect as the above can be provided.

According to the invention [5], it is possible to provide a printing machine having the same function and effect as described above. According to the invention [6], it is possible to provide an inspection machine having the same function and effect as described above.

  1 and 2 are plan views schematically showing a mounting machine line according to an embodiment of the present invention. As shown in both figures, the mounting line of this embodiment has two mounting machines 11 and 12 arranged side by side along the production line (X-axis direction), and the substrate transport direction (X-axis direction in FIG. 1). An electronic component is appropriately mounted on the board P conveyed toward the left side).

  Each of the mounting machines 11 and 12 includes a transporter 21, 22, 31, and 32 for transporting the substrate P, a component feeder 41 disposed on each side of the transporter, and an electronic component of the component feeder 41 on the substrate P. And a mounting head unit 51 for mounting on the device as basic components.

  As the transporters 21, 22, 31, and 32, as will be described in detail later, fixed transporters 21 and 22 that are fixed to the base 10 of the mounting machines 11 and 12, and a horizontal direction orthogonal to the X-axis direction. Movable transporters 31 and 32 that are movable in the (Y-axis direction) are provided.

  The component feeder 41 is configured with multiple rows of tape feeders 40... Suitable for supplying relatively small chip components.

  Each tape feeder 40 is detachably mounted with a reel on which a tape on which small chip components such as ICs, transistors, capacitors and the like are stored and held at predetermined intervals is wound, and the tape is fed from the reel to the tape feeder. The chip parts that are intermittently drawn out to the front end side of 40 and stored in the tape can be picked up by the head unit 51.

  In the present embodiment, the tape feeder 40 is used as a component feeder. However, the present invention is not limited to this, and a component feeder such as a tray feeder may be used in the present invention. The tray feeder is configured such that a relatively large electronic component is stocked in a state of being held in the component tray, and the electronic component is appropriately supplied from the tray.

  The head unit 51 picks up a component from the component supply machine 41 and mounts it on a substrate P on the movable transfer machines 31 and 32, which will be described in detail later. It is configured to be movable in the X-axis and Y-axis directions by means.

  The head unit 51 is mounted with a plurality of heads 50 arranged in the X-axis direction for attracting and mounting electronic components on the substrate P. Each head 50 is driven in the vertical direction (Z-axis direction) by Z-axis driving means (not shown) and driven in the rotational direction (R-axis direction) around the Z-axis by R-axis driving means (not shown). It has come to be. A suction nozzle 50a (see FIG. 4) is provided at the tip of each head 50, and a negative pressure is supplied to the suction nozzle 50a at the time of component suction so that the electronic component can be sucked by the suction force. Yes.

  Further, the head unit 51 is provided with a moving camera 55, and the moving camera 55 can monitor the mounting state of components.

  As shown in FIGS. 1 to 4, the movable transporters 31 and 32 include a fixed conveyor frame 1 f and a movable conveyor frame 2 f arranged along the substrate transport direction. A pair of conveyors including a fixed conveyor 1 and a movable conveyor 2 are fixed inside the conveyor frames 1f and 2f. At this time, the fixed conveyer 1 and the movable conveyer 2 extend in the substrate transport direction (X-axis direction) and are arranged in parallel to each other with an interval in the Y-axis direction.

  Both conveyors 1 and 2 are configured to be driven to rotate synchronously, and by rotating both conveyors 1 and 2 with both side edges of the substrate P on both conveyors 1 and 2 being placed. The substrate P can be transported along the transport direction.

  The movable conveyor frame 2f can be moved along the Y-axis direction with respect to the fixed conveyor frame 1f by driving of the substrate width driving motor 35. Furthermore, following the movable conveyor frame 2f, the distance between the conveyors 1 and 2 can be changed by moving the movable conveyor 2 in the direction in which the movable conveyor 2 contacts and separates from the fixed conveyor 1 (Y-axis direction). Yes.

  In the transfer machines 31 and 32, the movable conveyor 2 is moved with respect to the fixed conveyor 1, and the distance between the conveyors 1 and 2 is changed in accordance with the width size of the substrate P. It is configured so that both side edges of different types of substrates P can be reliably placed and various substrates P can be reliably conveyed.

  In addition, the movable transporter 3 is configured such that the entire movable transporter can move along the Y-axis direction by driving a transporter drive motor 36.

  Of the two mounting machines 11, 12, the loading machine 11 arranged on the upstream side with respect to the board conveyance direction has the loading fixed conveyance machine 21 arranged on the upstream side of the movable conveyance machine 31. Similar to the movable conveyor 31, the fixed conveyor 21 includes a fixed conveyor frame 1f and a movable conveyor frame 2f arranged along the X-axis direction. The fixed conveyor 1 and the movable conveyor 2 are provided on the conveyor frames 1f and 2f, respectively. Is provided. Further, the movable conveyor frame 2f is configured to be movable along the Y-axis direction with respect to the fixed conveyor frame 1f, and by this movement, the interval between the fixed conveyor 1 and the movable conveyor 2 can be changed, and all kinds of different sizes can be obtained. The substrate P can be transported. In addition, this fixed conveyance machine 21 is being fixed with respect to the base 10 of the mounting machine 11, and fixed conveyance machine itself does not move.

  In the downstream mounting machine 12, a carry-out fixed transfer machine 22 is disposed on the downstream side of the movable transfer machine 32. Similar to the movable conveyor 32, the fixed conveyor 22 includes a fixed conveyor frame 1f and a movable conveyor frame 2f arranged along the X-axis direction. The fixed conveyor 1 and the movable conveyor 2 are provided on the conveyor frames 1f and 2f, respectively. Is provided. Further, the movable conveyor frame 2f is configured to be movable along the Y-axis direction with respect to the fixed conveyor frame 1f, and by this movement, the interval between the fixed conveyor 1 and the movable conveyor 2 can be changed, and all kinds of different sizes can be obtained. The substrate P can be transported. The unloading fixed transfer machine 22 is fixed to the base 10 of the mounting machine 12, and the fixed transfer machine itself does not move.

  In the present embodiment, the substrate transport path is configured by the path of the substrate P transported by the transporters 21, 22, 31, and 32 of the mounting machines 11 and 12.

  When components are mounted on the board P by the mounting line configured as described above, first, as shown in FIG. 1, the movable transporters 31 and 32 correspond to the fixed transporters 21 and 22 in the X axis. Arranged side by side. In this state, the substrate P is carried in by the carry-in fixed carrier 21 in the upstream mounting machine 11, and the substrate P is transferred from the fixed carrier 21 to the movable carrier 31. Further, the substrate P is transported to a predetermined position (mounting position) by the movable transporter 31.

  When the substrate P is transported to the mounting position, as shown in FIG. 2, the movable transporter 31 moves to one of the Y-axis directions and is disposed in the vicinity of one component feeder 41. In this state, the head unit 51 moves to the component feeder 41 to pick up a predetermined component, and then moves to the substrate position to mount the component on the substrate P. Such mounting processing is repeatedly performed, and all predetermined components are mounted on the board P.

  Subsequently, as shown in FIG. 1, after the movable transporter 31 has moved to a position corresponding to the fixed transporter 21, the substrate P is transported by the movable transporter 31 and transferred to the movable transporter 32 of the downstream mounting machine 12. Reprinted.

  Subsequently, after the substrate P is transported to a predetermined position (mounting position) by the movable transporter 32, the substrate P moves to one side in the Y-axis direction and is disposed in the vicinity of one component feeder 41. In this state, the head unit 51 moves to the component feeder 41 to pick up a predetermined component, and then moves to the substrate position to mount the component on the substrate P. This mounting process is repeated, and after all the predetermined components are mounted on the substrate P, the movable transfer device 32 moves to a position corresponding to the unloader 22.

  Thereafter, the substrate P transported by the movable transporter 32 is transferred from the movable unloader 32 to the fixed transporter 22 for unloading, and further unloaded by the unloader 22 to the downstream side of the downstream mounting machine 12.

  In the present embodiment, the mounting machines 11 and 12 read a board identification number such as a barcode provided on the board P and grasp information related to the board P such as the type of board to be mounted. In the mounting machines 11 and 12, when a board P having a different size is carried in due to a change in board type or the like, the movable conveyor 2 of the transport machine is moved in the Y-axis direction according to the size of the board P. It moves and the interval between conveyors is automatically adjusted.

  On the other hand, in the present embodiment, each of the transporters 21, 22, 31, and 32 is provided with a plurality of substrate detection sensors 6 for detecting the presence of the substrate P.

  As the substrate detection sensor 6 used in this embodiment, a substrate confirmation sensor for confirming whether or not the substrate P is arranged at a predetermined position, and a transport when moving the movable transporters 31 and 32 in the Y-axis direction are used. In addition to the so-called guillotine monitoring sensor that monitors whether the substrate P is disposed across the machines 21, 22, 31, 32, the substrate passage confirmation for confirming whether the substrate P has passed a predetermined position Sensors and the like are provided. For example, in FIG. 3, the first sensor 6 from the right constitutes a guillotine monitoring sensor, the second sensor 6 from the right constitutes a board passage confirmation sensor, and the third sensor 6 from the right has the board P at the mounting position. A substrate confirmation sensor for confirming the presence is configured, and the leftmost sensor 6 configures a guillotine monitoring sensor.

  Each substrate detection sensor 6 includes a transmissive detector including a photoelectric switch having a projector 61 and a light receiver 62. The sensor 6 is configured to detect the presence of the substrate P when the projection light L projected from the light projector 61 toward the light receiver 62 is blocked by the substrate P.

  In this embodiment, each board | substrate detection sensor 6 is attached to the fixed conveyor 1 side in each conveyance machine 21,22,31,32. That is, the projector 61 is fixed to the lower side of the fixed conveyor 1 in the fixed conveyor frame 1f, and the light receiver 62 is fixed to the upper side of the fixed conveyor 1 in the fixed conveyor frame 1f corresponding to the vertical upper side of the projector 61. Has been. The projection light L projected from the projector 61 is received by the light receiver 62 through the inside of the fixed conveyor 1, while the substrate P is transported to the light projection position (substrate detection position). Since the projection light L is blocked by P and light reception to the light receiver 62 is prevented, it is detected that the substrate P is disposed at the light projection position.

  As shown in FIGS. 1 to 3, the fixed conveyor 1 of the transporters 21, 22, 31, and 32 is provided with a stopper 7 that can be moved into and out of the substrate transport path. When the stopper 7 has advanced into the substrate transport path, the substrate P transported by the transporters 21, 22, 31, and 32 comes into contact with the stopper 7, so that the substrate P is stopped at a predetermined position. At the same time, when the stopper 7 is retracted from the substrate transport path, the substrate P is configured to be transported smoothly without interfering with the stopper 7.

  A multi-camera 56 is provided on the upstream side of the component supply machine 41 in the upstream side mounting machine 11 and on the downstream side of the component supply machine 41 in the downstream side mounting machine 12. 11 and 12 can be monitored.

  As described above, according to the transporters 21, 22, 31, and 32 in the mounting machines 11 and 12 of the present embodiment, the projector 61 and the light receiver 62 as the substrate detection sensor 6 are disposed on the fixed conveyor 1 side. Since it is attached up and down across the transport path, even if the distance between the pair of conveyors 1 and 2 is changed by changing the substrate type, the distance between the projector 61 and the light receiver 62 remains constant. is there. That is, even if the substrate size is changed, the amount of light received by the light receiver 62 is constant, so that the predetermined detection accuracy can be maintained at a high level as it is. For this reason, for example, when changing the substrate size, it is not necessary to adjust the sensitivity or threshold value in the substrate detection sensor 6, so there is no need for sensor adjustment means when changing the substrate size, such as an amplifier circuit or a program for automatic tuning control. Accordingly, the number of parts can be reduced, and the structure can be simplified and the cost can be reduced.

  Further, since no tuning operation is required, the control operation is simplified and the time for tuning is not required, so that the production efficiency can be further improved.

  Furthermore, in the present embodiment, since a transmissive sensor is used as the substrate detection sensor 6, there is less adverse effect due to reflected light than when a reflective detection sensor is used, for example, and detection accuracy is further improved. Can do.

  In this embodiment, since the substrate detection sensor 6 is attached to the fixed conveyor 1 side, that is, the fixed conveyor frame 1f, the substrate detection sensor 6 is compared with the case where the substrate detection sensor is attached to the movable conveyor 2 side. Therefore, the electrical wiring structure can be simply finished, and the structure can be further simplified. In other words, when a substrate detection sensor is provided on the movable conveyor side, it is necessary to adopt a complicated configuration for the electric wiring structure of the sensor so that it can cope with the moving operation of the movable conveyor, which may lead to a complicated structure. There is. On the other hand, in the present embodiment, since the substrate detection sensor 6 is provided on the fixed conveyor 1 side, it is not necessary to employ a complicated electric wiring structure corresponding to the moving operation, and the structure is further simplified. Can be achieved.

  Further, in the present embodiment, the projector 61 of the substrate detection sensor 6 is disposed on the lower side of the fixed conveyor 1 and the light receiver 62 is disposed on the upper side of the fixed conveyor 1, so that the head unit 51 is efficiently operated at a low position. Can move well. That is, in the substrate detection sensor 6, since the light receiver 62 is thinner than the projector 61, by arranging the thin light receiver 62 on the upper side of the conveyor, the head unit 51 that moves on the conveyor can be moved to the substrate detection sensor. The lower position can be moved without interfering with the six light receivers 62.

  Furthermore, in this embodiment, it is possible to effectively prevent mutual interference between the sensors 6 and 6 provided at the opposite end portions of the movable transporters 31 and 32 and the fixed transporters 21 and 22 such as a guillotine monitoring sensor. . That is, temporarily, in the guillotine monitoring sensor 6 provided at the opposite ends of the movable conveyors 31 and 32 and the fixed conveyors 21 and 22, the projector 61 is provided on the fixed conveyor 1 side, and the light receiver 62 is provided on the movable conveyor 2 side. In this case, when the movable transporters 31 and 32 are moved in the Y-axis direction, the projector 61 provided on the fixed conveyor 1 of the movable transporter approaches the light receiver 62 provided on the movable conveyor 2 of the fixed transporter, There is a risk of malfunction due to mutual interference. On the other hand, in this embodiment, since the projector 61 and the light receiver 62 of the guillotine monitoring sensor 6 are provided only on the fixed conveyor 1 side, even if the movable transporters 31 and 32 are moved in the Y-axis direction, Since the guillotine monitoring sensor 6 on the movable conveyors 32 and 31 side does not approach the guillotine monitoring sensor 6 on the fixed conveyors 21 and 22 side, mutual interference can be effectively prevented.

  In the above embodiment, the case where the transporter of the present invention is applied to a mounting machine has been described as an example. However, the present invention is not limited thereto, and the present invention is not limited to this. In addition to being used as a transfer machine for each production facility that constitutes a board production line, such as a printing machine that applies paste such as cream solder, it can also be used as a transfer machine that only transfers a board.

  Moreover, in the said embodiment, although the board | substrate detection sensor is provided in the fixed conveyor 1 side, it is not restricted only to it, In this invention, you may make it provide a board | substrate detection sensor in the movable conveyor side. Further, in the present invention, the substrate detection sensor may be provided on both the fixed conveyor and the movable conveyor. In short, it is only necessary that the projector and the light receiver that are paired are provided on the same side of both conveyors. .

  Moreover, in the said embodiment, although demonstrated taking the case where a conveyance machine moves to a Y-axis direction as an example, this invention is not restricted only to it, This invention is the other direction, such as an X-axis direction and a Z-axis direction. The present invention can also be applied to one that moves or one in which a transporter moves in a two-dimensional direction or a three-dimensional direction.

It is a top view which shows the mounting line concerning one Embodiment of this invention in a board | substrate conveyance state. It is a top view which shows the mounting line of the said embodiment in the mounting state. It is a top view which shows the movable conveyance machine applied to the mounting machine of the said mounting line. It is a side view which shows the said movable conveyance machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed conveyor 2 Movable conveyor 11,12 Mounting machine 21,22 Fixed conveyance machine 31,32 Movable conveyance machine 35 Substrate width drive motor (width direction moving means)
6 Substrate detection sensor 61 Emitter 62 Receiver L Projection light P Substrate

Claims (6)

A transporter for transporting a substrate,
A pair of substrate transfer conveyors arranged in parallel corresponding to both sides of the substrate;
A width direction moving means for moving the pair of conveyors in a direction of approaching and separating from each other;
A transmission type substrate detection sensor that detects the presence of the substrate by blocking the projection light projected from the projector toward the light receiver,
A transporter, wherein a projector and a light receiver of the substrate detection sensor are provided on one conveyor of the pair of conveyors in a manner in which the projector and the light receiver are arranged above and below the substrate transport path. Among the pair of conveyors, one side conveyor is configured as a fixed conveyor, the other side conveyor is configured as a movable conveyor,
The transporter according to claim 1, wherein the movable conveyor is configured to move with respect to the fixed conveyor.   The transport device according to claim 1, wherein the light receiver is disposed above the substrate transport path. A mounting machine that mounts electronic components on a substrate transported by a transport machine,
The mounting machine comprising the transport machine according to any one of claims 1 to 3. A printing machine that applies paste to a substrate conveyed by a conveyance machine,
The said conveyance machine was comprised with the conveyance machine of any one of Claims 1-3, The printing machine characterized by the above-mentioned. An inspection machine that inspects the mounting state of an electronic component on a substrate conveyed by a conveyance machine,
The said conveyance machine was comprised with the conveyance machine of any one of Claims 1-3, The inspection machine characterized by the above-mentioned.

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