JP2001024391A - Component mounting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce substrate transfer time and to improve productivity in a component-mounting machine for mounting electronic components on a substrate. SOLUTION: This component-mounting machine is constituted with a movable- type substrate carry-in part 5, a movable-type XY table part 6, and a movable- type substrate carry-out part 7, so that the substrate carry-in part 5, the XY table part 6, and the substrate carry-out part 7 act in the same direction for carrying a substrate 1. By eliminating the movement of the substrate when carrying the substrate, the operation of the substrate carry-in part 5, the XY table part 6, and the substrate carry-out part 7 in the same direction increases the travel acceleration, deceleration, and speed, thus securing both the reduction of substrate transportation time and substrate quality and hence improving productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounter used for mounting, for example, an electronic component on a printed circuit board (hereinafter, referred to as a substrate).

[0002]

2. Description of the Related Art In recent years, with the progress of electronics, a further improvement in productivity by a component mounting machine has been required. In this case, it is necessary to shorten the board transfer time together with the mounting time per component. Hereinafter, this type of conventional component mounter will be described with reference to FIGS.
This will be described with reference to FIG. Here, FIG. 6 shows an external view of the component mounter, and FIG. 7 is a schematic configuration diagram showing a relationship of a transport unit of the component mounter. Hereinafter, the upstream side in the transport direction of the substrate is referred to as right or right, and the downstream side is referred to as left or left.

A fixed loader 10 is composed of two fixed loader rails 11 and carries in the substrate 1 (from right to left in FIG. 7). 30 is an XY table, two XY tables
The rails 31 are sequentially moved to a position where the board 1 is mounted (loading and unloading from right to left in FIG. 7), and the board 1 on which components are mounted is fixed (held) during component mounting. Reference numeral 33 denotes a stopper, which is provided so as to be positioned by contacting the left end surface of the substrate 1 in order to maintain a constant position when the substrate 1 is carried into the XY table 30, as shown in FIG. 7C. As described above, it can move downward (see the dotted line) when carrying in, and can move upward (see the solid line) when carrying out.

As shown in FIG. 7C, the XY table 30 can be moved up and down by an up / down drive unit 32. When mounting components, the XY table 30 moves downward (see the dotted line) so that the fixed loader 10 or The components are mounted at a height that does not interfere with the fixed unloader 50, and are moved upward (see the solid line) during transport, and the substrate 1 is transported by adjusting the height to the fixed loader 10 or the fixed unloader 50. . Note that the fixed unloader 50
It is composed of a fixed unloader rail 51 for carrying out the board 1 (carrying out from right to left in FIG. 7).

[0005] Reference numeral 60 denotes an XY drive unit, which moves the XY table 30 in the horizontal direction by the X motor 61 and the Y motor 62, and positions the board 1 at an arbitrary mounting position. Reference numeral 2 denotes a head which takes out an electronic component from the component supply unit 3 and mounts the component on a predetermined position of the substrate 1 on the XY table 30. The configuration of each rail 11, 31, 51 is shown in FIG.
Is shown in Here, the configuration of the XY rail 31 is shown,
Other fixed loader rails 11, fixed unloader rails 51
Is similarly configured. That is, the belt 37 is attached by two pulleys 35 and one pulley 35
Is configured to be rotated by a motor 36.
Then, the substrate 1 is brought into contact with the upper surface of the belt 37,
Thus, the substrate 1 is transported by rotating the motor 36.

Although not shown in the figure, each rail 1
A sensor for detecting the substrate 1 is provided at the left end of each of the motors 1, 31, and 51.
6 is stopped.

[0007]

However, in the conventional configuration as described above, in order to reduce the board transfer time, the mounting accuracy of the components already mounted on the board 1 is deteriorated,
Deterioration of the quality of the substrate 1 such as damage to the substrate 1 poses a problem.
That is, in order to shorten the board transfer time, each rail 11,
When the acceleration, deceleration, and speed of the rotation of the belt 37 of the belts 31 and 51 are increased, the acceleration during the transfer of the substrate 1 increases. Since the components already mounted on the board 1 are temporarily fixed with cream solder or an adhesive, the board may be defective due to misalignment or falling of the components.

Further, the positioning of the substrate 1 at the time of loading is performed by contacting the left end surface of the substrate 1 with the stopper 33. However, when the speed of the belt 37 increases, the substrate 1 arrives and stops the belt 37. Due to slight variations in the timing of the movement, the speed of contact with the stopper 33 varies, and the substrate 1 may hit the stopper 33 at a high speed, and a strong impact may be transmitted. In such a case, the substrate 1 may be cracked, or a component already mounted in the previous process may cause a board defect due to a component displacement or a fall. Therefore, it has been difficult to achieve both a reduction in the transfer time and an assurance of the substrate quality.

[0009] Due to the above-mentioned problems, there is a limit in reducing the substrate transfer time, and it has been difficult to improve the productivity. Further, as a second problem, when mounting a board 1 having various dimensions for each production lot in the component mounting machine, the XY table 30 is set so that the board 1 is at a fixed position with respect to the right end face of the board 1. It is common to use a fixed "right reference". By the way, in the above-described conventional configuration, it is necessary to shift the position of the stopper 33 to the left or right by an operator or to move the stopper 33 to the left or right by using a driving source such as a motor according to the board size. Or
The cost of equipment was increased.

Therefore, the invention of claim 1 of the present invention achieves both shortening of the board transfer time and securing of the board quality, can improve the productivity of the component mounter, and shortens the time for switching models. Another object of the present invention is to provide a component mounter that can improve productivity.

[0011]

In order to achieve the above-mentioned object, according to the present invention, there is provided a component mounter according to the present invention.
In a component mounter that mounts electronic components on a board, a movable board loading section, a movable XY table section, and a movable board unloading section are provided, and these board loading section, XY table section, and board unloading section are provided. And transporting the substrate by operating in the same direction.

Therefore, according to the first aspect of the present invention, the movement of the substrate during the transfer of the substrate is eliminated, and the movement of the substrate loading section, the XY table section, and the substrate unloading section in the same direction is caused by the movement acceleration.・ Deceleration and speed can be increased. For this reason, both shortening of the substrate transfer time and securing of the substrate quality can be achieved, thereby improving the productivity.

According to a second aspect of the present invention, there is provided a component mounter according to the first aspect, wherein the board loading section is a movable loader, the XY table section is a movable XY table, and the board unloading section is a movable XY table. Each having a movable unloader,
The movable loader, the movable XY table, and the movable unloader are temporarily connected and move integrally in the same direction.

Therefore, according to the second aspect of the present invention, the movable loader, the movable XY table and the movable unloader are simultaneously and integrally moved in the same direction, so that the moving acceleration, deceleration and speed are high. Can be easily realized by simple control.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to FIGS. Here, FIG.
2 and 3 are schematic side views of a transfer procedure, and FIGS. 4 and 5 are supplementary explanatory diagrams of the transfer procedure, according to an embodiment of the present invention. 6 is an external view of the component mounter (also used for description of the conventional example).

The same or substantially the same components as those in the conventional example (FIG. 7) are denoted by the same reference numerals, and the details are omitted. That is, in FIG. 1, 1 is a substrate, 2 is a head,
3 is a component supply unit, 10 is a fixed loader, 11 is a fixed loader rail, 30 is an XY table, 31 is an XY rail, 3
2 is a vertical drive unit, 50 is an unloader, 51 is a fixed unloader rail, 60 is an XY drive unit, 61 is an X motor, 62
Indicates a Y motor.

As shown in FIG. 1, a movable substrate loading section 5 is provided.
Comprises a fixed loader 10 and a movable loader 20,
The movable XY table unit 5 includes a movable XY table 30, and the movable substrate unloading unit 7 includes a movable unloader 40 and a fixed unloader 50. That is, the movable loader 20 is provided between the fixed loader 10 and the XY table 30, and the fixed unloader 50 and the XY table
A movable unloader 40 is provided between the tables 30. Here, the fixed loader 10 and the fixed unloader 5
The XY table 30, the XY table 30, and the XY drive unit 60 have the same configuration as the conventional example.

The movable loader 20 is composed of two movable loader rails 21 and is movable within a range 20L indicated by an arrow in the figure. At this time, the movable loader 20 is moved from right to left by being pushed leftward by the loader cylinder 22. And the loader cylinder 22
Becomes free after the movable loader 20 is moved to the left end.

The stoppers of the XY table 30 are provided at two positions in the transport direction, and can move up and down respectively. And the stopper 33A provided on the right side is
This is for adjusting the substrate 1 on the movable loader 20, and the stopper 33 </ b> B provided on the left is for adjusting the substrate 1 on the XY table 30. In the conventional example, the left end face of the substrate 1 is set, but in the present embodiment, the right end face of the substrate 1 is set.

The movable unloader 40 is composed of two movable unloader rails 41 and is movable within a range 40L indicated by an arrow in the figure. At this time, the movement of the movable unloader 40 from right to left is performed by being pulled leftward by the unloader cylinder 42. After the movable unloader 40 is moved to the left end, the unloader cylinder 42 is in a free state.

The shape of each of the rails 11, 21, 31, 41, 51 is L-shaped or U-shaped.
Is moved in contact with the upper surface of the bottom of the L-shape or the concave portion of the U-shape. The movement of the substrate 1 on the movable loader 20 is configured to move by a cylinder (not shown), and the right end surface of the substrate 1 is configured to be pushed by the cylinder. Similarly, the movement of the substrate 1 on the movable unloader 40 is also configured to move by a cylinder (not shown), and the right end surface of the substrate 1 is configured to be drawn by the cylinder.

The operation of the above embodiment will be described below with reference to the transfer procedure shown in FIGS. FIG. 2A shows a state in which the next substrate 1b is carried in. At this time,
The substrate 1a being mounted is held on the XY table 30, and X
The Y table 30 operates at the lowered position. During this time,
In parallel with the component mounting on the board 1a, the next board 1b is carried in A from the fixed loader 10 to the left end of the movable loader 20.

FIG. 2B shows the standby state of the next substrate 1b. At this time, the movable loader 20 is connected to the XY table 3
0, the movable loader 20 moves B by the loader cylinder 22 to the left in parallel with the component mounting. At this time, the mounting time of the component depends on the production lot.
It takes a long time from about 40 seconds to a maximum of several minutes per substrate, while the time required for carrying in the substrate and waiting for the substrate is one.
Since the time is about 0 seconds, the acceleration, deceleration, and speed during the movement of the next substrate 1b and the movable loader 20 can be reduced. Therefore, there is no possibility that components on the next substrate 1b will be displaced or fall, and the next substrate 1b will not be damaged. At this point, the fixed loader 10 can carry in the substrate 1c one after another from the previous process.

FIG. 2C shows the state at the time of completion of component mounting on the board 1a. At this time, when the component mounting on the board 1a is completed, the stoppers 33A and 33B are lowered.
At this time, the right stopper 33A and the right end surface of the next substrate 1b are located close to each other. FIG. 2D shows a state at the time of starting the transfer of both substrates 1a and 1b. At this time, X
The Y table 30 is rising. At that time, the left end of the movable loader 20 and the right end of the XY table 30 and the right end of the movable unloader 40 and the left end of the XY table 30 are mechanically temporarily moved by setting pins (not shown). It is configured so as to be coupled, so that it can move integrally in the same direction during the subsequent movement. At this time, the left stopper 33B and the substrate 1
The right end surface of “a” is in a close position.

FIG. 3A shows the start of the movement of the XY table 30. At this time, the XY table 30 moves C to the right by the X motor 61. At that time, as described above, the movable loader 20 and the movable unloader 40
Mechanically temporarily connected to the XY table 30,
Thus, the three move together C to the right. On the other hand, the rightward movement of the substrate 1a and the next substrate 1b is regulated by the stoppers 33A and 33B, and the positions do not change.
Only each of the rails 21, 31, 41 moves.
That is, the substrate 1a on the XY table 30 starts moving on the movable unloader 40, and the next substrate 1b on the movable loader 20 starts moving on the XY table 30.

FIG. 3B shows the state when the movement of the XY table 30 is completed. At this time, when the XY table 30 completes the rightward movement C, the substrate 1a is carried out to the left end of the movable unloader 40, and the next substrate 1b is moved to the XY table 30.
At the left end. During this time, the substrates 1a and 1b are not moved at all, and the substrates 1a and 1b are transported only by the movement of the XY table 30, the movable loader 20, and the movable unloader 40. Therefore, substrate 1
Since the acceleration, deceleration, and speed of the movements a and 1b are all zero, the possibility that the components mounted on the boards 1a and 1b and the boards 1a and 1b are defective in quality can be eliminated.

FIG. 3C shows the state at the time when the transfer of both substrates 1a and 1b is completed. At this time, the XY table 30 is lowered, and the stoppers 33A and 33B are raised, whereby the transfer operation from the substrate 1a to the next substrate 1b is completed. FIG. 3D shows a state at the time of starting the component mounting on the next substrate 1b.
At this time, the mounting of the next substrate 1b held on the XY table 30 starts. During this time, the movable unloader 40
Since it does not interfere with the Y table 30, the movable unloader 40
Moves D to the left. Further, since the state is the same as that at the time of carrying in the substrate shown in FIG. 2A, it is possible to carry in the substrate 1c one after another from the fixed loader 10 to the movable loader 20.

FIG. 3E shows the state when the substrate is carried out.
At this time, the mounted substrate 1a is
Is carried out E to the fixed unloader 50. At this time, the component mounting time is a long time from about 40 seconds per substrate 1 to a maximum of several minutes depending on the production lot. On the other hand, the time required for starting the component mounting and unloading the substrate is 10 minutes.
Since the time is on the order of seconds, the acceleration, deceleration, and speed of the substrate 1a and the movable unloader 40 during movement can be reduced. Therefore, components on the substrate 1a are displaced or fall,
There is no possibility that the substrate 1a may be damaged.

The above is a series of transport operations. As described above, in the present embodiment, since the substrate itself is not moved when the substrate is transported, the moving acceleration / deceleration / moving speed of the movable loader 20 and the movable unloader 40 that operate simultaneously and integrally with the XY table 30 are determined. It is possible to increase the speed. For this reason, it is possible to achieve both a reduction in the substrate transfer time and an assurance of the substrate quality.

Next, a supplementary explanation of the concept of the right reference of the substrate will be given with reference to FIGS. Here, FIG. 4 is a supplementary explanatory view of the procedure for transporting a large substrate, due to the size of the substrate 1,
FIG. 5 is a supplementary explanatory view of the transfer procedure of the small substrate. X so that the substrate is at a fixed position with respect to the right end face of the substrate.
The mounting based on the “right reference” fixed to the Y table 30 is common. That is, as shown in FIG. 4A, stoppers 33A, 33B are provided on the right end surfaces of the large substrates 1Aa, 1Ab.
Are in contact with each other, the positions of the right end faces of the large substrates 1Aa and 1Ab are always constant, and the large substrates 1Aa and 1Ab are transported on a “right reference”. This corresponds to the small substrates 1Ba, 1Ba shown in FIG.
The same applies to Bb.

Although the movement of the substrate on the movable loader 20 is not shown in FIG.
The right end surfaces of Aa, 1Ab, 1Ba, and 1Bb are configured to be pushed into a fixed position. Even on the movable loader 20, the positions of the right end surfaces of the substrates 1Aa, 1Ab, 1Ba, and 1Bb are always constant. The movement of the substrates 1Aa, 1Ab, 1Ba, and 1Bb on the movable unloader 40 is omitted in FIG.
The right end surfaces of the substrates a, 1Ab, 1Ba, and 1Bb are drawn to a fixed position, and the positions of the right end surfaces of the substrates 1Aa, 1Ab, 1Ba, and 1Bb are always constant even on the movable unloader 40.

As described above, even when boards of various dimensions are mounted for each production lot, the stoppers 33A, 33B
This eliminates the need for position adjustment, and allows mounting by the “right reference” that always keeps the position of the right end face of the substrate constant without performing any mechanical position adjustment or the like. As described above, in the present embodiment, it is not necessary to adjust the transfer position according to the dimensions of the substrate when transferring the substrate, and it is possible to reduce the time required to switch between models.

[0033]

According to the first aspect of the present invention, since the substrate can be transferred at a high speed without moving the substrate, it is possible to shorten the substrate transfer time and ensure the quality of the substrate at the same time, thereby improving the productivity. This has the effect. Further, there is an effect that the setup change time depending on the board size for each production lot can be reduced, and the productivity can be improved.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is a schematic configuration diagram of a transport unit in a component mounting machine, (a) is a unit layout relation diagram, (b) is a plan view, and (c) is a side view. is there.

FIGS. 2A and 2B are schematic side views of a transfer procedure in the component mounter, wherein FIG.
Shows the time when the component mounting is completed, and (d) shows the time when the board transfer is started.

FIGS. 3A and 3B are schematic side views of a transfer procedure in the component mounter, wherein FIG. 3A shows the start of XY table movement, FIG. 3B shows the completion of XY table movement, FIG. 3C shows the completion of board transfer, and FIG. At the start of board mounting, (e) is at the time of board unloading.

FIGS. 4A and 4B are supplementary explanatory views of a transfer procedure in the component mounter, wherein FIG. 4A shows a state when a large substrate is loaded, and FIG.

FIGS. 5A and 5B are supplementary explanatory views of a transfer procedure in the component mounter, wherein FIG. 5A shows a state when a small board is loaded, and FIG.

FIG. 6 is a perspective view showing the appearance of the component mounter.

7A and 7B are schematic configuration diagrams of a transport unit in a conventional component mounting machine, where FIG. 7A is a unit layout relation diagram, FIG.
(C) is a side view, and (d) is a rail side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 1a Substrate under mounting 1b Next substrate 1c Subsequent substrate 1Aa Large substrate 1Ab Large substrate 1Ba Small substrate 1Bb Small substrate 5 Substrate loading section 6 XY table section 7 Substrate transport section 10 Fixed loader 11 Fixed loader rail 20 Movable loader 21 Movable loader rail 22 Loader cylinder 30 XY table 31 XY rail 32 Vertical drive unit 33A Stopper 33B Stopper 40 Movable unloader 41 Movable unloader rail 42 Unloader cylinder 50 Fixed unloader 51 Fixed unloader rail 60 XY drive unit

Claims (2)

[Claims] 1. A component mounter for mounting an electronic component on a substrate, comprising: a movable substrate carry-in portion, a movable XY table portion, and a movable substrate carry-out portion.
A component mounting machine, wherein a Y table section and a board carry-out section operate in the same direction to carry a board. 2. The substrate loading section has a movable loader, the XY table section has a movable XY table, and the substrate unloading section has a movable unloader. The movable loader, the movable XY table, and the movable unloader are provided. 2. The component mounting machine according to claim 1, wherein the components are temporarily coupled and move integrally in the same direction.