JPH01211997A - parts supply device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a component feeding device for a machine that mounts a wide variety of small parts onto predetermined positions on a board at high speed, and particularly relates to a component supply device for a machine that mounts a wide variety of small parts onto predetermined positions on a circuit board, and particularly relates to a component supply device for a machine that mounts a wide variety of small parts onto predetermined positions on a board. The present invention relates to a component supply device for an electronic component mounting machine that mounts electronic components onto a printed circuit board at high speed.

[Conventional technology]

Conventionally, an electronic component mounting device for mounting a wide variety of electronic components onto a printed circuit board has a component supply table that reciprocates from side to side and stops at a predetermined position, as disclosed in Japanese Patent Laid-Open No. 55-118698. An electronic component supply unit is placed on the electronic component supply unit, and the component supply table moves each time the transfer hept picks up one electronic component in the supply unit. The mechanism is shown in Fig. 9 as a plan view.
The main components of the 0 electronic component mounting machine are a main body base 1, a component supply table 2, a mounting equipment 3 using a rotary head or a Ti Cartesian coordinate robot (the rotary head is shown in Fig. 9), and an XY table 4. 2. Also, the drive mechanism for the component supply table 2 includes a rapquet 7 and a pinion 8 to move the component supply table 2 on the linear guide 5, as shown in FIG. 10, which is a DD cross section in FIG. There is a method in which the motor is driven by a motor 10 via a decelerator 9. There are also other types that are driven by a ball screw, servo motor, or stepping motor.

On the component supply table 2, several dozen to nearly 100 types of nine tape reel units containing electronic components are placed in parallel. This table 2 is positioned at high speed so that the tape reel containing the necessary electronic components is located directly below the suction position 3a of the rotary hept 3. At the same time as the rotary hept 3 picks up and rotates the electronic component, the XY table moves the printed circuit board to a predetermined position, which has been coated with adhesive in advance, at the transfer position 3b of the rotary hept 3. It is positioned so that it is directly below. Next, the above operation of mounting the electronic components onto the printed circuit board is performed continuously at high speed.

[Problem to be solved by the invention]

In the conventional apparatus as described above, when there are no electronic parts on the table, the entire apparatus is stopped and the parts are replenished. In this type of device, which attaches several pieces per second at high speed, the stoppage due to this setup time reduces the amount of work.

In addition, among the 20 to 40 types of parts, the weight of the moving parts is several tens of kilograms, the capacity of the motor is less than IKW, and the capacity of the controller may be small.
3 to 0.4 seconds/piece), and when there are many types (approximately 10011 types), the weight of the movable part becomes 100# or more, and the capacity of the motor and controller becomes large, which is not economical.

Furthermore, since a heavy object weighing 100 kg or more moves at high speed, the vibration and noise are large, and as a high-precision mounting device, there are various problems such as a decrease in mounting performance and a decrease in the strength of the component parts. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a parts supply device that can replenish parts without stopping the drive of a table during a part mounting operation.

[Means to solve the problem]

In order to achieve the above object, the present invention divides a parts supply table into a plurality of parts, provides a servo motor and a pinion for each table as a drive mechanism, and further provides one common hook, so that a plurality of divided tables can be divided. The divided tables, which can be individually driven on the same straight line by servo motors for each table and which face the transfer iR mechanism, are positioned and moved to predetermined positions.

[Effect]

As mentioned above, the parts supply table is divided into multiple parts, and each divided table is configured to be able to be driven and stopped individually on the same straight line, so the weight of each divided table is light, and the electronic parts to be supplied are mounted. While the divided table currently placed is driven at high speed, positioned at a predetermined position, and transferred to the electronic component transfer board, the other divided tables are stationary, so electronic components cannot be replenished during that time. I can do it.

〔Example〕

The parts supply device according to one embodiment of the present invention is shown in FIGS. 1 to 4 below.
This will be explained based on the diagram. 1 is a plan view of the parts supply device, FIG. 2 is a view from A in FIG. 1, FIG. 3 is an enlarged view of section B in FIG. 2, and FIG. 4 is a view from C in FIG.

The main body base 11 has a predetermined length along which the parts supply table runs, and has a rail-shaped linear guide 12 protruding from one side of the upper surface, and a linear scale 13 for position detection adjacent to this.
However, on the opposite side, a rub 14 is disposed over almost the entire length of the main body base in the longitudinal direction. Main body base 11. The component supply table traveling above requires several meters in total for a table that supplies approximately 1001 types of electronic components. Split table 15 that divides this into multiple pieces
(15a, . . . , 15e) travel with their weight supported by the linear guide 12 and rack 14.

Each divided table 15 is a mechanism driven and positioned by each pinion 17 directly connected to each servo motor 16, as shown in FIG. As shown in FIG. 3, there is a traveling member 18 on the lower surface of each divided table 15, which is engaged with the linear guide 12. Furthermore, a linear scale detection head 19 is provided opposite to the linear scale 13. is installed. FIG. 4 shows these structures in the horizontal direction as the C tail weight in FIG. 1. Each divided table 15Vi detects its own position by the detection head 19 of the linear scale, and according to a command, the first
The movement of the component is stopped so as to position the component at the suction position 3a shown in the figure.

The control device of this embodiment will be explained based on the block diagram of FIG. A plurality of divided tables 15a,...
Each servo motor 16a fixed to 15e...
..., 166 versus driver 20. A set of servo mechanisms consisting of a servo controller 721 is provided, and a system controller 222 is provided above it. A switch 25 for switching between the drive circuit 23 and the position detection circuit 24 is provided between the servo mechanism and the division table. That is, the switch 25 switches the servo motor 16 of each table.
a,...@16e and %! J near scale head 19” e..., 19C is switched and connected.

Next, the operation of each partitioned table will be explained using FIGS. 1 and 5. In FIG. 1, the dividing table 15b on which the parts ordered by the system controller 22 are mounted is placed directly below the suction position 1t3a of the rotary head shown in FIG. The servo motor 16b and the drive circuit 23 are connected, and the linear scale head 19b and the position detection circuit 24 are connected, and the DC servo motor 16b is driven by the driver 20 until the position deviation amount of the servo controller 21 becomes zero. It shows the condition. On the other hand, other distributed table 15a*15ctt5
dst5e is placed at both ends of the main body base, and the drive circuit 23 and position detection circuit 24 are not connected within the switch 25. Next, when the system controller 22 issues a command to position the adjacent dividing table 15C, the dividing table 15b first moves to the end of the main body base 11 and retreats. Thereafter, the switch 25 connects the servo motor 16C and the drive circuit 23 as well as the linear scale head 19C and the position detection circuit 24. After connecting,
The electronic component that was commanded is located directly below the rotary head 3.
Position it so that it comes to position a. The switching drive and positioning operation are performed in this manner, and a plurality of divided tables can be positioned by one set of servo mechanisms.

Further, a component supply device according to another embodiment of the present invention will be explained based on FIGS. 6 to 8. Fig. 6 is a side view of the parts supply device with the servo motor on the movable side, Fig. 7 is a plan view of the parts feed device with the servo motor on the stationary side, and Fig. 8 is a block diagram of these control devices. , all are shown for the case of two divisions, but even in the case of two or more divisions, the number of mechanisms increases proportionally, and the functions are the same.

Figure 6 shows the two-part table in Figure 1,
Mechanism and control become simple. On the other hand, in FIG. 7, the servo motor 26 and the binion 27 are on the stationary side. Therefore, a rack 28 having a length corresponding to the stroke is fixed to each dividing table 15, and each rack 28 and the binion 27 are fixed to each dividing table 15. is engaged. In the case of the structure shown in FIG. 7, there are linear guides on both sides of the bottom surface of the split table 15.
2 are arranged in two rows. For position detection, the linear scale 13 located in the center or the encoder 29 attached to each servo motor 26 is used.

As shown in FIG. 8, the control device of this embodiment consists of the same number of drivers 20 (20a, 20b) as the number of partition tables, servo controllers 21 (21a*21b), and a system controller 222 located above them. ing. The position of each partition table 15 is υ嬰scale 1
The operation of each table detected by the encoder 29 attached to the motor 3 or each motor is commanded by the system controller 22. That is, in order for the divided table, for example 15a, on which the commanded part is mounted to be located directly below the rotary head 3a in FIG. to drive the servo motor 26a. Next, when mounting parts on the dividing table 15b, the system controller 22ri and the servo controllers a-y 21a
At this point, the dividing table 15a is first moved and retracted to the end of the main body base 11, and then the servo controller 21b similarly positions the dividing table 15b directly below the head 3a.

In addition, since 20 to 30 types of small electronic components are placed on each split table and are mounted on the board at high speed, operations such as attaching parts placed on one split table are not performed. Normally, the user is always instructed to perform the mounting work on the parts on the adjacent split table.

As explained above, among the plurality of divided tables, the divided table with no electronic components is stopped on both sides of the main body base, and in this state, electronic components can be replenished. Even during this replenishment time, electronic components are mounted on the printed circuit board via the rotary head from the dividing table located in the center, and the electronic components are supplied to the component supply table (divided table) K while the entire device is in operation. Replenishing.

As mentioned above, among the multiple divided tables, only the divided table that performs electronic component mounting work through the rotary head is moving at high speed for positioning, and the other divided tables are stationary, so it is a divided table. The weight of the moving parts is reduced to a fraction of that of the conventional system, and the force, vibration, and noise generated in each part of the device are also reduced, and reliability in terms of performance and strength is improved.

〔Effect of the invention〕

As explained above, according to the present invention, the component supply table is divided into a plurality of parts, and the divided table used for electronic component mounting work performs high-accuracy and high-speed positioning, and the other divided tables are used for the main body base. Since it is stationary on both sides, it is possible to replenish the stationary dividing table with parts while the machine is in operation. Therefore, the amount of work can be improved by replenishing parts without stopping the operation of the device. In addition, the parts supply table as a movable part is divided into multiple parts, and only the divided table that performs the transfer work moves for positioning, and the other divided tables are stationary, so the weight of the movable part can be reduced by several minutes. 1, and the capacity of the drive unit and control unit can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a flat rM diagram of an electronic component mounting machine equipped with a component supply device showing an embodiment of the present invention, and Fig. 2 is a planar view of an electronic component mounting machine equipped with a component supply device showing an embodiment of the present invention.
Figure 3 is an enlarged sectional view of section B in Figure 2, and Figure 4 is an enlarged cross-sectional view of section C in Figure 1.
Figure 5 is a configuration diagram of a control device, Figures 6 and 7 are a side view and a plan view of an electronic component mounting machine equipped with a component supply device showing other embodiments, and Figure 8 is a 6 and 1 are configuration diagrams of the control device of the embodiment, FIG. 9 is a plan view of an electronic component mounting machine equipped with a conventional component supply device, and FIG.
It is an enlarged sectional view taken along the line D-D in the figure. 3... Mounting mechanism 11... Main body base 12.
...Linear guide 13...Linear scale T
. 14.28... Rack 8.17.27... Binion 16.26... Servo motor 15...
Divided table 18... Traveling member 19... Linear scale head 20... Driver 21.
...servo controller? 22... System controller 23... Drive circuit 24... Position detection circuit 25... Switch 29... Encoder. Shima 1st A + Ki 2 Figure 11 Kaka Ys Itsu Reisei Masu - Go 1 Shi 1
2 feet + 161-gi 1 company, -ta 131 胛a'2'r-1 17 binipun 14
→User prison'' 3 Illustrated judge 4th 18 Speeding department box circle Lineas 1-Ruyabo judge 5c21 21 Sun-Ojiz10-Ra 24. Others 1
One-piece circulation i Tani 2z Jisoo rK Kushito Q-Nia
Z5 Lpa 龜りwhisper Figure 2b Ser tree ``Motor 2'' Biniseso 28 Beneath seat 8m 29 Encope Figure 9 3rd judgment 10σ Woli = 7゛id

Claims (3)

[Claims] 1. A supply table loaded with several types of parts reciprocates left and right on the base and stops at a predetermined position, and a parts supply section continuously supplies the above-mentioned parts to the mounting mechanism, and a parts supply section that suctions the above-mentioned parts to other parts. In a component mounting machine equipped with a mounting mechanism for mounting onto a board on a side XY table, the supply table is divided into a plurality of parts, and each divided table is moved along the same straight line by a drive mechanism consisting of a servo motor, a pinion, and a rack. 1. A component supply device comprising means for positioning the divided table, which moves individually and faces the mounting mechanism, at a predetermined position according to a command from a control device. 2. Claim 1, wherein the control device includes a system controller, a servo controller, a driver, a DC motor, and a switching device, and the servo motor drive circuit and the linear scale detection circuit are connected by the switching device according to a command from the system controller. The parts feeding device described. 3. Each split table is equipped with a parts storage unit that sequentially sends out the parts, a mounting mechanism that sucks or grips the parts on the split table, and mounts them on the board, and a mounting mechanism that places the board and places it two-dimensionally in a predetermined position. The component supply device according to claim 1, which forms a component mounting machine including a positioning table.