JP4047608B2 - Mounting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting machine that mounts components on a substrate, and more particularly, to a mounting machine that has a simple configuration and is suitable for attaching and detaching a suction nozzle that is necessary.
[0002]
[Prior art]
As an example of a mounting machine for mounting and mounting a chip resistor, a chip capacitor, an IC (Integrated Circuit) and the like on a substrate, there is a printed wiring board assembly apparatus described in Japanese Patent No. 2919486.
[0003]
In this printed wiring board assembling apparatus, components sucked by a suction nozzle (extraction nozzle) are mounted and mounted on a printed wiring board positioned and held on an X table. At that time, the suction nozzle is positioned in the X direction (left-right direction) with respect to the printed wiring board by the X table itself moving in the left-right direction. Positioning of the suction nozzle in the Y direction (front-rear direction) with respect to the printed wiring board is performed by movement (single-axis movement) of the mounting (suction) head provided with the suction nozzle.
[0004]
Thus, instead of fixing the board and moving the mounting head in both the X and Y directions for mounting and mounting components on the board, the movement of the mounting head is limited to the Y direction, for example, in the X direction. A mechanism for moving the substrate side is known.
[0005]
[Problems to be solved by the invention]
By the way, in a mounting machine, it is generally necessary to replace the suction nozzle provided in the mounting head in accordance with the size, weight, etc. of the component to be sucked. A nozzle with a large suction diameter for a small part cannot create a gap, and the part cannot be sucked. A nozzle with a small suction diameter for a large and heavy part has insufficient suction power and does not achieve stable suction operation. Because.
[0006]
For such replacement of the suction nozzle, usually, a suction nozzle storage section is provided in the mounting machine, and the replacement suction nozzle is stored in the suction nozzle storage section. In the above-mentioned publicly known document, it can be seen from the drawing that the nozzle accommodating portion is provided on the side of the X table, but there is no mention of the detailed configuration or action.
[0007]
How efficiently the suction nozzle can be replaced and how simple it is to perform can be an important matter for factors such as improving mounting efficiency (shortening tact time) and reducing the cost of the apparatus.
[0008]
The present invention has been made in consideration of the above-described circumstances, and provides a mounting machine capable of efficiently attaching and detaching a suction nozzle to a head with a simple configuration in a mounting machine for mounting components on a substrate. For the purpose.
[0009]
[Means for Solving the Problems]
  In order to solve the above-described problems, the present invention provides a base and the base, which can hold the substrate in a substantially horizontal posture and in the left-right direction.Within the range of maximum allowable movementMoving substrate moving table and the front-rear direction of the substrate moving tableOne sideA component supply unit that is provided next to each other and that can arrange a plurality of the components in the front-rear direction for picking up the components, and moves in the front-rear direction from above the arrangement of the plurality of components to above the substrate moving table, A head unit that picks up the component from a component supply unit and mounts the picked-up component on the held substrate and holds the nozzle in a replaceable manner, and the substrate moving table has a replacement nozzle storage. And the replacement nozzle storage portion moves to the left and right as the substrate moving table moves in the left-right direction, and opposes substantially vertically below the head unit by the left-right movement and the movement of the head unit in the front-rear direction. Further, the replacement nozzle storage unit is provided on the component supply unit side of the board moving table, and a plurality of replacement nozzles are connected to the unit supply unit side. It holds arranged in said lateral direction so as to parallel to the feed sectionThe replacement nozzle storage portion is formed so that the length in the left-right direction is within the maximum allowable length in the left-right direction of the substrate according to the maximum allowable movement width. The nozzle for use can also be opposed substantially vertically below the head unit.It is characterized by that.
[0010]
That is, this mounting machine is a mounting machine in which the substrate moving table moves in the left-right direction and the head unit moves in the front-rear direction, and the replacement nozzle storage portion is provided on the substrate moving table. Further, the replacement nozzle storage portion moves to the left and right as the substrate moving table moves left and right, and the replacement nozzle storage portion is positioned almost vertically below the head unit due to the movement of the head unit in the front-rear direction. Has been. Therefore, in this positional relationship, the head unit can smoothly mount the replacement nozzle accommodated in the replacement nozzle storage section (or remove the nozzle already mounted on the head unit from the replacement nozzle storage section). it can.
[0011]
In other words, there is no need for a new mechanism for moving the replacement nozzle housing for attaching / detaching the nozzle to / from the head unit, and the head unit and the replacement nozzle housing are used for attaching / detaching the nozzle to / from the head unit. It is also easy to oppose at this position by the left-right movement and the front-back movement. Therefore, the suction nozzle can be efficiently attached to and detached from the head with a simple configuration.
[0012]
Note that the “front-rear direction” with respect to the “left-right direction” does not necessarily have a right-angle relationship. This is because the above description holds even for a relationship that intersects diagonally (oblique system). The same applies to the following.
[0013]
  In addition, the present inventionInThe replacement nozzle storage unit is provided on the component supply unit side of the substrate moving table,Since a plurality of replacement nozzles can be stored side by side in the left-right direction so as to be parallel to the component supply unit, the head unit can be moved to the component supply unit in a short time after nozzle replacement. Therefore, it is possible to improve the efficiency of the mounting operation when it is frequently performed.
[0017]
As an embodiment, the replacement nozzle storage portion can store a plurality of replacement nozzles in the front-rear direction in addition to the left-right direction. According to this, a large number of replacement nozzles can be provided, and it is possible to cope with a case where many types of nozzles are used.
[0018]
As an embodiment, the substrate moving table further includes a conveyor that conveys the substrate to be held in the left-right direction. According to this, it is not necessary to provide a mechanism for transporting the substrate left and right for loading (or unloading) the substrate into and from the mounting machine separately from the substrate moving table.
[0019]
In addition, as an embodiment, the present invention further includes an imaging device that is provided on the base and between the board moving table and the component supply unit, and images from above to below.
By imaging the head unit with the imaging device, it can be confirmed whether or not the head unit holds the nozzle.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are configuration diagrams schematically showing a mounting machine according to an embodiment of the present invention. FIG. 1 is a plan view and FIG. 2 is a left side view.
[0021]
As shown in FIGS. 1 and 2, the mounting machine includes a base 11, X-direction guide rails 12a and 12b, substrate conveyors 13a and 13b, an X-direction engaging member 14, an X-direction servo motor 15, and an X-direction encoder 16. , X direction feed screw 17, X direction feed screw receiver 18, fixed camera illumination device 19, fixed camera 20, feeder bank 21, tape feeder 22, head unit 23, suction head 24, Y direction frame 25, Y direction guide rail 26a and 26b, Y-direction servo motor 27, Y-direction encoder 28, Y-direction feed screw 29, Y-direction feed screw receiver 30, moving camera 31, replacement nozzle storage section 32, conveyor width variable timing belt 8, pulley 9a and 9b has a substrate moving table 10; Each of the tape feeders 22 has a component suction point 22a, and a suction nozzle 24a is attached to the lower end of the suction head 24.
[0022]
As shown in the figure, there is a mechanism including a substrate moving table 10 on the base 11 for holding the substrate in a horizontal posture and moving it in the X direction (in FIG. 1, in this X direction). (The illustration of the mechanism for moving is partially omitted.) The substrate moving table 10 is engaged with the X-direction feed screw 17 via a nut member fixed to the substrate moving table 10, that is, an X-direction engaging member 14. The X-direction feed screw 17 is installed between the X-direction servo motor 15 and the X-direction feed screw receiver 18 and rotated by a predetermined amount by the X-direction servo motor 15, thereby being connected to the X-direction engagement member 14. The substrate moving table 10 is moved in the X direction. The X-direction encoder 16 constitutes an X-axis servo device together with the X-direction servo motor 15, and functions as a sensor and an actuator as the servo device, respectively.
[0023]
Further, the substrate moving table 10 moves in the X direction on a pair of X direction guide rails 12a and 12b provided in parallel with each other across the X direction for smooth movement. Further, the substrate moving table 10 is provided with a pair of substrate conveyors 13a and 13b in the uppermost position in parallel with each other in the X direction.
[0024]
The board conveyors 13a and 13b are for carrying out the printed circuit board P on which the components are mounted and carrying in the printed circuit board P on which the components are mounted. The substrate is conveyed in the X direction (an example of the mechanism of the substrate conveyor will be described later again (FIG. 5)). The printed circuit board P is stopped and fixed at a predetermined position with respect to the substrate moving table 10 by a clamp mechanism (not shown).
[0025]
The substrate conveyor 13a is configured to be movable in the Y direction corresponding to the width of the substrate P. That is, the board conveyor 13a is connected to the conveyor width variable timing belt 8 which is stretched between the pulleys 9a and 9b at both ends in the Y direction in the Y direction. The timing belt 8 is rotated and moved by a motor (not shown) to change the distance between the substrate conveyor 13a and the opposite substrate conveyor 13b (the state shown is a case where the maximum width is set). is there).
[0026]
This variable width mechanism may be configured to move the substrate conveyor 13b side or move both the substrate conveyors 13a and 13b. In this embodiment, in order to reduce the tact time by setting the distance between the tape feeder 22 as the component supply unit and the substrate P close, the side of the substrate conveyor 13a opposite to the tape feeder 22 is moved. Yes.
[0027]
The board conveyors 13a and 13b are integrated with the board moving table 10 in the X direction. By moving the board moving table 10 in the X direction, the end positions for loading or unloading the printed circuit boards are removed. The end position of can be made variable. The maximum allowable movement width in the X direction of the board conveyors 13a and 13b is determined within the range where there is no interference with the periphery of the mounting machine on which the mounting machine is installed, and the X direction length of the X direction guide rails 12a and 12b. . If the length in the X direction of the printed circuit board is equal to or less than the maximum allowable length that is slightly larger than the maximum allowable movement width, mounting is possible.
[0028]
Further, as shown in the figure, the substrate moving table 10 is provided with a replacement nozzle storage portion 32 capable of storing a plurality of replacement nozzles in the X direction on the side of the tape feeder 22 that is a component supply portion. As a result, the replacement nozzle storage unit 32 moves in the X direction simultaneously with the movement of the substrate moving table 10 in the X direction.
[0029]
Further, the width in the X direction of the replacement nozzle storage portion 32 is set to be within the maximum allowable length in the X direction of the printed circuit board P. Accordingly, any replacement nozzle (or a vacant seat position therefor) in the replacement nozzle storage portion 32 can be set to a position facing the lower side of the suction head 24 by the movement of the substrate moving table 10 in the X direction (note that The suction head 24 is movable in the Y direction as described below.)
[0030]
Further, as shown in the figure, there is a mechanism including a Y direction frame 25 so as to straddle the substrate moving table 10 and the substrate conveyors 13a and 13b and to extend this direction downward in the Y direction in FIG. To do. The Y-direction frame 25 is provided on the base 11 and has a head unit 23 for picking up a component and mounting the component on the substrate P, and moves it in the Y direction.
[0031]
The Y direction frame 25 is provided with a pair of Y direction guide rails 26a and 26b on the upper portion thereof in parallel with each other. The head unit 23 is guided in the Y direction by the guide rails 26a and 26b. In addition, the head unit 23 is engaged with a Y-direction feed screw 29 disposed across the Y-direction frame in the Y-direction by an engagement member made of a nut member (not shown), and the feed screw 29 is required. By rotating by an amount, it moves in the Y direction by a predetermined amount via the engagement member.
[0032]
The Y-direction feed screw 29 is installed between a Y-direction servo motor 27 provided on the side close to the substrate moving table 10 and a Y-direction feed screw receiver 30 provided on the opposite side. The Y-direction encoder 28 forms a Y-axis servo device together with the Y-direction servo motor 27, and functions as a sensor and an actuator as the servo device, respectively.
[0033]
The Y-direction servomotor 27 can also be provided at the end of the Y-direction feed screw 29 on the side close to the tape feeder 22. In this embodiment, the operator operates the left side of FIG. 1 in the X direction and the lower side of FIG. 1 in the Y direction in order to replace the tape feeder 22 in consideration of the actual operating state. Since the space is used, the arrangement as described above is employed to improve the workability of the operator by avoiding the protrusion shape as the device on these sides. Thereby, a compact shape in the Y direction as a whole is also realized.
[0034]
The head unit 23 is guided and moved as described above by the mechanism on the Y-direction frame 25 side, and the suction head 24 directly replaces the component suction point 22a and the substrate P of the tape feeder 22 as a component supply unit. In order to be able to move in the vertical direction (Z direction) with respect to the nozzle storage portion 32, the shape protrudes to the left in FIG. Such a protruding shape is advantageous in that it is easy to secure a space around the suction head 24 when the head unit 23, particularly the suction head 24, is maintained in the work space described above.
[0035]
In this embodiment, the head unit 23 is provided with four suction heads 24 arranged in a line in the Y direction, and can be moved up and down independently of each other by an elevating mechanism (not shown) and around its axis (R In the direction). Further, a negative pressure is supplied from a negative pressure supply means (not shown) to the suction nozzles 24a provided at the lower ends of the suction heads 24 at the time of component suction. Thereby, components can be adsorbed to the adsorption nozzle 24a with a suction force.
[0036]
The replacement nozzle storage section 32 is as follows. FIG. 6 is a diagram schematically illustrating a configuration example of the replacement nozzle storage portion 32. The base member 32A has a storage hole for storing the suction nozzle 24a. This hole is composed of three types of storage holes 31A1 to 31A3 of different sizes, and each of the suction holes 24A1 to 24a3 of three sizes corresponding to the size of the suction force is stored in each of the storage holes 31A1 to 31A3. It is possible. A shutter 32B is provided on the upper surface of the base member 32A so as to be fixed in the vertical direction and slidable in the horizontal direction, and oscillates during the desorption operation of the suction nozzles 24a1 to 24a3 from the suction head 24.
[0037]
When the suction head 24 exchanges the suction nozzle 24a with the replacement nozzle storage portion 32, for example, the following operation is performed. First, among the suction heads 24, the nozzle to be replaced is aligned with the vacant seat position of the replacement nozzle storage portion 32 in which the nozzle 24a is to be stored. For this, in the X direction, the substrate moving table 10 is moved to a predetermined position with the replacement nozzle storage portion 32, and in the Y direction, the head unit 23 is moved to a predetermined position.
[0038]
Next, the suction head 24 to be replaced with the nozzle is lowered, and the suction nozzle 24a enters the empty seat position of the storage hole 32A1 (32A2, 32A3). Here, the shutter 32B is moved in a predetermined direction (for example, the X direction or the Y direction) and engaged with the flange portion 24a11 or the shoulder portion 24a21 or 24a31 of the suction nozzle 24a. Thereafter, the suction head 24 is raised to release the ball of the notch mechanism (not shown) of the suction head 24 from the ball groove 24a12, 24a22 or 24a32 of the suction nozzle 24a, and the suction nozzle 24a is stored in the storage hole 31A1 (32A2, 32A3). Place in the residue. Thereafter, the shutter 32B is returned in the opposite direction, and the upper portions of all the storage holes 31A1, 32A2, 32A3 are opened.
[0039]
Next, the suction head 24 is aligned with the replacement nozzle storage portion 32 in which the suction nozzle 24a to be newly mounted is stored. For this purpose, the substrate moving table 10 is moved to a predetermined position in the X direction with the replacement nozzle storage portion 32. Since the current position can be applied as it is in the Y direction, it is not particularly necessary for a new movement.
[0040]
Then, the suction head 24 from which the suction nozzle 24a has been removed is lowered to the position of the suction nozzle 24a to which the replacement nozzle storage portion 32 is to be mounted. The suction head 24 is lowered to fit the tip 24a13, 24a23 or 24a33 of the suction nozzle 24a. At this time, since the ball of the notch mechanism (not shown) of the suction head 24 is fitted into the ball grooves 24a12, 24a22 or 24a32 of the suction nozzle 24a, the suction / adsorption nozzle 24a is locked and held by the suction head 24.
[0041]
Thereafter, the suction head 24 is raised. As a result, the suction head 24 is in a state where the suction nozzle 24a is mounted, and a new empty seat is generated in the replacement nozzle storage portion 32. Thus, the suction nozzle 24a can be replaced.
[0042]
The tip portions 24a23 and 24a33 of the suction nozzle 24a and the ball grooves 24a22 and 24a32 have a common shape. Correspondingly, a total of four types of suction heads 24 are mounted on the head unit 23. On the other hand, a suction port (not shown) is provided in the suction nozzle 24a, and each of the suction nozzles 24a1 to 24a3 has a plurality of types depending on the shape or size thereof. In the figure, 32C2 and 32C3 are plates made of an elastic body serving as a cushion to support the suction nozzles 24a2 and 24a3 while protecting the suction surface.
[0043]
The moving camera 31 provided in the head unit 23 is for recognizing the presence and accurate position of the substrate P by imaging the substrate P (particularly the fiducial mark marked thereon) from above. . The moving camera 31 can also make the control unit (not shown) recognize the replacement history by imaging the replacement nozzle storage unit 32 from above each time the suction nozzle 24a is replaced. Further, by arranging a storage detection sensor in the replacement nozzle storage section 32, it is also possible to cause the control section (not shown) to recognize the replacement history.
[0044]
The feeder bank 21 can fix a plurality of tape feeders 22 adjacent to each other and positioned. The tape feeder 22 is arranged in parallel with the board conveying direction of the board conveyors 13a and 13b so that the additional component supply is in the X direction (from left to right in FIG. 1).
[0045]
Here, each tape feeder 22 is configured such that a tape containing and holding small electronic components such as ICs, transistors and capacitors at predetermined intervals is led out from the reel, and the suction nozzle 24a serves as a component. As the tape is picked up, the tape is sent out intermittently.
[0046]
The X-direction coordinates of the component suction points 22a of the tape feeder 22 are set to coincide with the X-direction coordinates of the suction head 24. As a result, when the head unit 23 is present on the Y-direction frame 25 on the tape feeder 22 side as the component supply unit (the state shown in the drawing), the head unit 23 moves in the Y direction to move the head unit 23 below the predetermined suction head 24. The component suction point 22a can be positioned. In this state, the individual suction heads 24 are moved up and down to suck and pick up predetermined parts.
[0047]
Further, the fixed camera 20 has an imaging direction directed from below to above, and the X-direction coordinate of the optical axis thereof substantially coincides with the X-direction coordinate of the suction head 23. Thereby, when the Y-direction position of the head unit 23 is at the position 23a shown in the drawing, it is possible to take an image of the component sucked from below by the fixed camera 20.
[0048]
This imaging is for recognizing the detailed position and orientation of the picked-up component. Based on this recognition information, the amount of position correction when the component is mounted on the board P is calculated, and high-accuracy mounting is realized. To do. Furthermore, the fixed camera 20 can also be used to make a control unit (not shown) recognize whether or not the head unit 23 holds a nozzle. A fixed camera illumination device 19 is provided above the fixed camera 20 to improve the illumination conditions of components and the like sucked by the suction head 24.
[0049]
With the configuration as described above, in this embodiment, the head unit 23 that has undergone component pick-up and imaging (imaging is performed at a position near 23a in the figure) extends on the movement of the head unit 23 on the substrate P ( It can be located eg 23b) in the figure. The Y direction is positioned by a servo device including the Y direction servo motor 27, and the X direction is positioned by a servo device including the X direction servo motor 15. In this state, the individual suction heads 24 can be raised and lowered to mount predetermined components on the substrate P at predetermined positions.
[0050]
Further, no new mechanism for moving the replacement nozzle storage portion 32 is required for attaching / detaching the suction nozzle 24a to / from the head unit 23, and the head is used for attaching / detaching the suction nozzle 24a to / from the suction head 24 of the head unit 23. It is easy to make the unit 23 and the replacement nozzle storage portion 32 face each other at a predetermined position by moving the substrate moving table 10 in the X direction and moving the head unit 23 in the Y direction. Therefore, the suction nozzle 24 a can be efficiently attached to and detached from the suction head 24 with a simple configuration.
[0051]
Furthermore, by providing the replacement nozzle storage portion 32 on the fixed camera 20 side of the substrate moving table 10, the entire mounting machine can be made compact in the front-rear direction and the left-right direction. At the same time, the head unit 23 can be moved to the tape feeder 22 as the component supply section in a short time after the nozzle replacement, and in particular, the efficiency of the mounting operation can be improved when the nozzle replacement is performed relatively frequently.
[0052]
Next, an embodiment different from the embodiment shown in FIGS. 1 and 2 will be described with reference to FIG. FIG. 3 is a plan view schematically showing a configuration of a mounting machine according to another embodiment of the present invention. In FIG. 3, the same reference numerals are given to the components already described, and the description thereof is omitted.
[0053]
In this embodiment, in place of the replacement nozzle storage portion 32 in the above-described embodiment, a replacement nozzle storage portion 32a is provided on the side of the substrate moving table 10 opposite to the tape feeder 22 side. The suction nozzle replacement operation is almost the same except that the Y-direction position of the head unit 23 in the replacement is different.
[0054]
In this embodiment as well, the suction nozzle can be efficiently attached to and detached from the suction head 24 with a simple configuration as in the above embodiment. Further, by providing the replacement nozzle storage portion 32a on the opposite side of the substrate moving table 10 from the fixed camera 20 side, the distance between the substrate moving table 10 and the component supply unit (tape feeder 22) is further shortened. I can. Accordingly, the head unit 23 can move between the substrate moving table 10 and the tape feeder 22 in a shorter time, and in particular, when the nozzle replacement is relatively infrequent, the mounting operation can be made more efficient.
[0055]
Next, an embodiment different from the embodiment shown in FIGS. 1, 2, and 3 will be described with reference to FIG. FIG. 4 is a plan view schematically showing a configuration of a mounting machine according to still another embodiment of the present invention. In FIG. 4, the same reference numerals are given to the components already described, and the description thereof is omitted.
[0056]
In this embodiment, instead of the replacement nozzle storage portion 32 in the above-described embodiment, a replacement nozzle storage portion 32b is provided on the side of the substrate moving table 10 on the tape feeder 22 side. The replacement nozzle storage portion 32b is configured to store a plurality of nozzles in the X direction and to store a plurality (2 in this example) of nozzles in the Y direction. The suction nozzle replacement operation is almost the same as in the above embodiment.
[0057]
According to this, a large number of replacement nozzles can be provided, and it is possible to cope with a case where many types of nozzles are used. Of course, such a nozzle storage portion 32b can also be applied to the embodiment shown in FIG.
[0058]
Next, the substrate transfer function of the substrate moving table 10 described in the above embodiments will be additionally described with reference to FIG. FIG. 5 is a front view schematically showing a configuration example of the substrate moving table 10, and the components already described are given the same numbers. Here, for convenience of explanation, the replacement nozzle storage portion 32 (or 32a, 32b) is not shown.
[0059]
As shown in the figure, a narrow belt 51 is laid in the longitudinal direction on the substrate conveyor 13b, and the belt 51 is stretched over pulleys 52 and 53 provided at substantially both ends of the substrate conveyor 13b. It passes on the pulleys 54 and 55 provided in the outer periphery and has a circumferential shape (the same applies to the substrate conveyor 13a although not shown). The pulley 55 is rotationally driven by a motor 56. When the motor 56 is driven to rotate, the belt 51 moves along the path formed by the pulley group. As shown in the figure, the lengths of the board conveyors 13a and 13b are longer than the length necessary for fixing the board.
[0060]
As a result, the substrates placed on P1 and P2 on the substrate conveyors 13a and 13b can move from P1 to P2 which is the substrate fixing (clamping) position, and from the substrate fixing position P2 to P1 (or P2). And can be moved to the opposite side of P1 (P3). As described above, the maximum allowable movement width in the X direction of the board conveyors 13a and 13b is within a range where there is no interference with the periphery of the mounting machine on which the mounting machine is installed, and in the X direction of the X direction guide rails 12a and 12b. It depends on the length. Further, since the maximum allowable movement width is increased when the lengths of the board conveyors 13a and 13b are shortened, the length in the X direction of the printed board that can be mounted as a result, that is, the maximum allowable length can be increased.
[0061]
However, if the lengths of the board conveyors 13a and 13b are made too short, (1) the movement of the board moving table 10 at the same time as the printed board P is carried out by the board conveyors 13a and 13b from the board fixing position P2 to the carrying-out position P3. Moves in one direction in the X direction to the carry-out side of the board conveyors 13a, 13b by the above-mentioned (2) carry-in side from the carry-out side position of the board conveyors 13a, 13b through the center position (position that becomes the central part of the moving range during mounting) The center of the board conveyors 13a and 13b at the same time as the movement to the other position in the X direction and the loading of the printed board P from the loading position P1 by the board conveyors 13a and 13b after receiving the printed board P. It takes time to move to one position in the X direction.
[0062]
If possible, the length of the board conveyors 13a and 13b may be the same as the length of the base 11 in the X direction, or shorter than that by the length of the printed board P. In addition, although illustration is abbreviate | omitted about the mechanism for fixing a board | substrate, a plate-shaped member is provided on it via the board | substrate on the belt 51, for example, and a board | substrate is provided between the belt 51 and the plate-shaped member. Can be fixed by pinching.
[0063]
In this way, by providing the substrate conveyors 13a and 13b with a length that extends in the direction in which the substrate moving table 10 moves, and the substrate moving table 10 has not only a substrate fixing function but also a substrate transfer function. Further, it is not necessary to newly provide a substrate carry-in / carry-out conveyor outside the substrate moving table 10, leading to cost reduction of the apparatus. Further, by changing the transport strokes of the substrate conveyors 13a and 13b, it is possible to change the substrate loading / unloading position, which is particularly convenient when manually loading / unloading the substrates.
[0064]
Although the case where the carry-in position and the carry-out position are set separately on both sides in the X direction of the base 11 has been described above, the carry-in position and the carry-out position may be set on either side of the base 11 in the X direction. Good. Setting is possible by changing a control program registered in a control device (not shown).
[0065]
In FIG. 5, the pulley 9b is a pulley for the conveyor width changing mechanism already described, and a similar pulley 109b is provided in the longitudinal direction of the substrate conveyors 13a and 13b. The pulley 9b and the pulley 109b are simultaneously driven by a drive shaft 61. In order to rotate the drive shaft 61, a motor 60, a pulley 58, a belt 59, and a pulley 57 are provided to transmit power.
[0066]
【The invention's effect】
As described above in detail, according to the present invention, the substrate moving table moves in the left-right direction and the head unit moves in the front-rear direction, and the replacement nozzle storage portion is provided in the substrate moving table. Further, the replacement nozzle storage portion moves to the left and right as the substrate moving table moves left and right, and the replacement nozzle storage portion is positioned almost vertically below the head unit due to the movement of the head unit in the front-rear direction. Therefore, the replacement nozzle accommodated in the replacement nozzle storage portion can be smoothly mounted (or the nozzle already mounted on the head unit can be detached from the replacement nozzle storage portion).
[0067]
Therefore, a new mechanism for moving the replacement nozzle storage part for attaching / detaching the nozzle to / from the head unit is not required, and the head unit and replacement nozzle storage part are attached to the predetermined unit for attaching / detaching the nozzle to / from the head unit. It is also easy to oppose at a position by the left-right movement and the front-back movement. Therefore, the suction nozzle can be efficiently attached to and detached from the head with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing a configuration of a mounting machine according to an embodiment of the present invention.
FIG. 2 is a left side view schematically showing a configuration of a mounting machine according to an embodiment of the present invention.
FIG. 3 is a plan view schematically showing a configuration of a mounting machine according to another embodiment of the present invention.
FIG. 4 is a plan view schematically showing a configuration of a mounting machine according to still another embodiment of the present invention.
FIG. 5 is a front view schematically showing a configuration example of a substrate moving table 10 in each of the embodiments.
6 is a schematic diagram illustrating a configuration example of the replacement nozzle storage unit 32 illustrated in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 8 ... Conveyor width variable timing belt 9a, 9b ... Pulley 10 ... Substrate moving table 11 ... Base 12a, 12b ... X direction guide rail 13a, 13b ... Substrate conveyor 14 ... X direction engaging member 15 ... X direction servo motor 16 ... X direction encoder 17 ... X direction feed screw 18 ... X direction feed screw receiver 19 ... Fixed camera lighting device 20 ... Fixed camera 21 ... Feeder bank 22 ... Tape feeder 22a ... Part suction point 23 ... Head unit 24 ... Suction head 24a ... Suction nozzle 25 ... Y direction frame 26a, 26b ... Y direction guide rail 27 ... Y direction servo motor 28 ... Y direction encoder 29 ... Y direction feed screw 30 ... Y direction feed screw receiver 31 ... Moving cameras 32, 32a, 32b ... Replacement nozzle storage part 51 ... Belt 52, 3,54,55 ... pulley 56 ... motor 57 ... pulley 59 ... belt 60 ... motor 109b ... pulley

Claims (4)

The base,
A substrate moving table provided on the base and capable of holding the substrate in a substantially horizontal posture and moving within a range of a maximum allowable movement width in the left-right direction;
A component supply unit that is provided next to one side in the front-rear direction of the substrate moving table, and that can arrange a plurality of the components in the front-rear direction for picking up components,
Moving in the front-rear direction from above the arrangement of the plurality of components to above the substrate moving table, picking up the components from the component supply unit, and mounting the picked-up components on the held substrate; A head unit that holds the nozzle in a replaceable manner,
The substrate moving table has a replacement nozzle storage portion,
The replacement nozzle storage portion moves left and right as the substrate moving table moves in the left-right direction, and faces the head unit substantially vertically downward by the left-right movement and the front-rear movement of the head unit. And
The replacement nozzle housing portion further is provided in the component supply unit side of the substrate moving table, a plurality of replacement nozzles can be accommodated side by side in the lateral direction so as to parallel to the component supply section, this By forming the length of the replacement nozzle storage portion in the left-right direction within the maximum allowable length in the left-right direction of the substrate in accordance with the maximum allowable movement width, any replacement nozzle can be used as the head. A mounting machine characterized in that it can be opposed substantially vertically below the unit .   The mounting machine according to claim 1, wherein the replacement nozzle storage unit can store a plurality of replacement nozzles in the front-rear direction in addition to the left-right direction.   The mounting apparatus according to claim 1, wherein the substrate moving table further includes a conveyor that conveys the substrate to be held in the left-right direction.   4. The apparatus according to claim 1, further comprising an image pickup device that is provided on the base and between the board moving table and the component supply unit and picks up an image from above. The mounting machine described.

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