JP2000120986A - Part mounting machine with lubricant feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of lubricating work man-hours by arranging a nozzle for feeding oil to a machine element requiring lubrication and forcibly feeding lubricant from the nozzle by compressed air by means of a pump unit for jetting or dropping it in feeding of lubrication oil to a machine element. SOLUTION: After a printed circuit board 2 is transferred to a X-Y table so as to be held and fixed in a mounting position, a mounting head 13 lifting/ lowering along a direct action guiding mechanism 15 is actuated sequentially, so that an electronic part or the like is sucked and picked up from a carrier tape and mounted it to the printed circuit board 2. In this kind of part mounting machine, a jetting nozzle 20a jetting lubricant to the direct action guiding mechanism 15 and a jetting nozzle 20b jetting lubricant to a guide rail 19a of a direct action guiding mechanism 19 are arranged. The respective jetting nozzles 20a, 20b are connected to a pump unit via a joint 21 and a tube 22, and according to an operation of an auxiliary operation panel, lubricant can be automatically fed to the direct action guiding mechanisms 15, 19 from the nozzles 20a, 20b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting machine for mounting an electronic component or the like on a printed circuit board, and supplies lubricating oil to a portion of a linear motion guide mechanism or the like which performs repetitive operations such as sliding and rotation. Related to the device.

[0002]

2. Description of the Related Art FIGS. 10 to 13 show a conventional component mounting machine 1. FIG. As shown in FIG. 10, the component mounting machine 1 includes a plurality of carrier tapes (strip-shaped long material) 3 in which electronic components to be mounted on a printed circuit board 2 are stored in a reel shape, and a plurality of component supply devices 4 for feeding the same. Supply tables 5 and 6 mounted on
Is arranged.

The supply tables 5 and 6 can be independently moved in the left and right directions in FIG. 12 by a driving device (not shown) along a linear guide mechanism 7 shown in FIG. For example, a ball screw and a motor are suitable as a driving device of the supply tables 5 and 6.

Further, the component mounting machine 1 has transporting devices 8 and 9 for loading and unloading the printed circuit board 2 to and from the mounting position, and a linear guide mechanism for holding and fixing the printed circuit board 2 transferred from the transporting device 8. 10a, 10b, left and right of FIG.
An XY table 11 that can move in the vertical direction is provided. A mounting head 13 is mounted on the circumference of the main shaft portion 12 at an equal angle, and the mounting head 13 has a nozzle 14 for vacuum-sucking electronic components and the like. The mounting head 13 can be moved up and down by a driving device (not shown) along a linear motion guide mechanism 15 shown in FIG.

FIG. 1 shows the operation of the component mounting machine.
This will be described with reference to FIG. The printed circuit board 2 sent by the transfer device 8 is transferred to the XY table 11 and held and fixed at the mounting position.

Then, the XY table 11 moves the printed circuit board 2 so that a predetermined position (mounting position A) for mounting components on the printed circuit board 2 is located below the nozzle 14.

In the meantime, the supply table 5 or the supply table 6 includes a component supply device 4 to which a carrier tape 3 containing components to be mounted on the printed circuit board 2 is attached.
To the suction position B.

When the main shaft 12 rotates intermittently and the nozzle 14 attached to the mounting head 13 is positioned at the suction position B, the driving device (not shown) operates the lever 16 shown in FIG. When the slider 17 of the moving guide mechanism 19 moves down along the guide rail 19, the mounting head 13 moves down along the linear guide mechanism 15, and the nozzle 14 moves from the carrier tape 3 sent by the component supply device 4. Adsorbs electronic components and rises.

The supply tables 5 and 6 are moved so as to position the component supply device 4 containing the corresponding components at the suction position B in accordance with the order of the components mounted on the printed circuit board 2, and the mounting head 13 operates sequentially. Then, electronic components and the like are sucked from the carrier tape 3 and picked up.

Further, when the main shaft portion 12 rotates intermittently and the nozzle 14 that has sucked the component moves to the mounting position A and is positioned, the mounting head 13 descends by the linear motion guide mechanism 15 to move the component that has been sucked to the printed circuit board 2. Mount.

As described above, electronic components and the like stored in the carrier tape 3 are sequentially mounted in a predetermined place on the printed circuit board 2 in a predetermined order. One of the supply tables 5 and 6 is moved to the suction position (the supply table 6 in FIG. 13) while the component supply device 4 storing the components to be mounted on the printed circuit board 2 is moved to the suction position. The supply table 5) is evacuated and stopped at the standby position so that the component supply device 4 or the carrier tape 3 can be replaced, and can be operated for a long time without stopping the component mounting machine.

[0012]

In such a configuration, there are two supply tables for replenishment of components, etc., so that while one of them is in operation, the other is replenished with components so that the component mounting machine can be mounted without stopping. The machine can be operated continuously. However, if the machine is to be operated stably for a long time and lubricating oil is to be supplied for a long service life, the component mounting machine must be stopped, which causes a decrease in the operation rate, that is, a decrease in productivity.

More specifically, in recent years, the operation of the component mounting machine has become faster, and supply of lubricating oil to the linear guide mechanism 15 of the mounting head 13 and the other linear guide mechanisms 10 and 19 has become indispensable. Is coming.

However, as the function of the component mounting machine is improved, the structure becomes complicated. For example, the guide rail 19a to which the slider 17 for moving the mounting head 13 up and down at the suction position or the mounting position is covered by the mechanism head 13. Usually, it does not appear outside, and there is a drive unit that moves the mounting head 13 up and down, so it is very difficult to perform maintenance etc., there are places where maintenance can not be done unless some parts are removed, and the mounting position of the component mounting machine is also The work was difficult and time-consuming because it was located at the top near the center. Therefore, improvement of workability and reduction of work time are required.

The present invention provides a component mounting machine with a lubricating oil supply device that can automatically supply lubricating oil to a mechanical element that performs a sliding operation such as a linear motion guide mechanism without stopping the operation of the component mounting machine. The purpose is to:

[0016]

SUMMARY OF THE INVENTION A component mounting machine with a lubricating oil supply device according to the present invention comprises a nozzle for supplying lubricating oil to a linear guide mechanism of a mounting head for sucking and transferring components and the like, and a nozzle for supplying lubricating oil to the nozzle. A connected tube is provided, and the tube is connected and provided with a pump unit for supplying lubricating oil.

Thus, even if the lubricating oil can be supplied without removing peripheral components for lubrication even if the lubricating oil is installed on the back side of the component mounting machine like a linear motion guide mechanism of the mounting head, lubrication can be performed. The number of work steps can be reduced, and the component mounting machine can be operated for a long time and the service life can be extended, which leads to an improvement in productivity. In addition, since a certain amount of lubricating oil can be supplied, no excessive lubrication or shortage occurs, which contributes to prevention of insufficient lubrication and saving of lubricating oil. Further, automatic lubrication can be performed by linking the pump unit for supplying the lubricating oil with the component mounting machine and the operation time, thereby minimizing the time for lubrication and improving the operation rate.

[0018]

According to a first aspect of the present invention, there is provided a component mounting machine having a lubricating oil supply device, which has a mounting head for mounting an electronic component or the like on a printed circuit board. A nozzle is provided so as to supply grease to a required machine element, and a lubricating oil is pressure-fed from the nozzle by a pump unit by compressed air, and is supplied to the machine element by jetting or dripping. It is characterized by having done.

According to a second aspect of the present invention, there is provided a component mounting machine with a lubricating oil supply device according to the first aspect, wherein the timing of opening the compressed air valve is earlier than the operation timing of the pump unit for sending out the lubricating oil. It is characterized in that the control is performed at a timing when the supply of the lubricating oil is started after the pressure is increased.

According to a third aspect of the present invention, there is provided a component mounting machine with a lubricating oil supply device according to the first and second aspects, wherein the lubricating oil is supplied to a location requiring lubrication in accordance with the operating time of the component mounting operation. Features.

An embodiment of the present invention will be described below with reference to FIGS. 10 to 13 showing a conventional example.
The same or equivalent components are denoted by the same reference numerals and description thereof is omitted.

The mechanism and operation of picking up components and mounting them on a printed circuit board are the same as those in the prior art, so that the description thereof will be omitted, and the mechanism relating to lubrication, which is the gist of the present invention, will be described.

(Embodiment 1) FIGS. 1 and 2 show a lubricating oil injection nozzle mounting portion in a component mounting machine according to the present invention, and an injection nozzle 20a for injecting lubricating oil to a linear motion guide mechanism 15,
An injection nozzle 20b for injecting lubricating oil is provided on a guide rail 19a of the linear motion guide mechanism 19. Injection nozzle 2
As shown in FIG. 3, a tube 22 is connected to 0a and 20b via a joint 21, and lubricating oil is supplied inside the tube 22 together with compressed air.

This tube 22 is connected to the pump unit 23 shown in FIGS. This pump unit 23
Sends a certain amount of lubricating oil. By such a mechanism, FIG.
By pressing a predetermined button on the sub operation panel 24, the lubricating oil is automatically supplied from the nozzle 20 to the linear motion guide mechanisms 15, 19. FIG. 6 shows a device system diagram of the pump unit.

Next, the lubrication procedure will be described with reference to FIG. The program for executing the flowchart shown in FIG. 7 is incorporated in a part of the control device 32.

When the button on the sub-operation panel 24 of the component mounting machine 1 is pressed (S1), the valve 25 for supplying compressed air is opened (S2), and the valve 33 is switched to drive the pump unit 23 for T1 seconds ( S3) Then, the valve 33 is switched to stop the pump unit 23 for T2 seconds (S4).

When the specified time (T3 seconds) has been reached (S5),
Close the valve 25 to stop the supply of compressed air (S
6) The operation caused by pressing the sub operation panel 24 is stopped (S7).

The drive time (tm1), stop time (tm2), and total lubrication time (tm3) of the pump unit can be set respectively. Total lubrication time tm
3 is a drive time tm1 and a stop time t of the pump unit 23.
It is assumed to be an integral multiple (n times) of the sum of m2. The amount of refueling can be adjusted by the driving time of the pump unit 23 because the amount of refueling per injection from the pump unit is constant.

In this embodiment, a time is input, and the number of driving times n is calculated as n = tm3 / (tm1 + tm2) and is not an input value. However, tm3 is calculated using tm1, tm2, and n as input values. It may be driven.

The operation of the pump unit 23 for supplying lubricating oil will now be described with reference to FIGS. A certain amount of the lubricating oil in the tank 26 is sent to the venturi nozzle 28 by the pump 27 of the pump unit 23. Here, the lubricating oil is formed into a mist having a particle size of several μm by the compressed air and sent to the main pipe 29. The atomized lubricating oil conveyed by air is branched by the distributor 30 and is injected through the tubes 22 through the joints 31 from the injection nozzles 20a and 20b to the object to be lubricated.

The inside of the injection nozzles 20a and 20b is provided with a small hole, and when passing through this small path, the flow velocity is increased, and the object to be lubricated (the linear guide mechanism 15, 1)
A part of the mist-like lubricating oil becomes liquid and adheres to the target object by the jet collision in 9).

The pump unit 23 for supplying the lubricating oil used here is an example of an existing one, and a pump unit having another configuration may be used. Further, according to the present invention, since the lubricating oil is injected to the guide rail 19a which does not operate like the linear motion guide mechanisms 15 and 19,
In the system in which the injection nozzle 20 is attached to the guide block 18 to supply the lubricating oil, the tube 22 repeatedly bends or expands and contracts due to the operation of the guide block 18 so that the tube 22 is easily damaged. No problems occur.

Further, in the case of the linear motion guide mechanisms 15, 19,
By injecting the lubricating oil into the upper part of the guide rail 19a of the linear motion guide mechanism 19, the lubricating oil gradually flows down, and the lubricating oil can be supplied to the guide block 15 attached to the lower part.

Although the nozzle 20b is attached without contact with the guide rail 19a, it may be configured such that a part of the nozzle 20b is attached to contact with the guide rail 19a.

(Embodiment 2) FIG. 8 shows another embodiment of the lubrication procedure. A program for executing the flowchart shown in FIG. 8 is incorporated in a part of the control device 32 instead of the flowchart of FIG. I have. Others are the same as (Embodiment 1).

In FIG. 8, the pump driving time tm1, the stop time tm2, and the total lubrication time tm3
, T1, T2 and T3, respectively. Here, the total lubrication time T3 is a time obtained by adding the initial supply time T4 of the compressed air only to the value obtained by multiplying the sum of the drive time T1 and the stop time T2 of the pump by the number of times of drive n.

In FIG. 8, a predetermined button on the sub operation panel 24 is pressed (S1). The valve 25 for supplying the compressed air is opened (S2). After a lapse of the set time (T4 seconds) (S3), the pump 27 is driven for T1 seconds (S4). The pump is stopped for T2 seconds (S5). When the lubrication time (T3 seconds) has been reached (S6), the compressed air valve is closed (S7).

According to the lubrication procedure of the second embodiment, the timing for opening the valve 25 for supplying the compressed air for atomizing the lubricating oil is earlier than the timing for driving the pump 27 for feeding the lubricating oil. Then, after the pressure of the air reaching the venturi nozzle 28 increases, the pump is driven to supply the lubricating oil to the venturi nozzle 28, thereby increasing the atomization rate of the lubricating oil.

(Embodiment 3) FIG. 9 shows another embodiment of the lubrication procedure. A program for executing the flowchart shown in FIG. 9 is incorporated in a part of the control device 32 instead of the flowchart of FIG. I have. Others are the same as (Embodiment 1).

In FIG. 9, the time T5 is input to the component mounting machine 1 in advance at the lubricating oil supply interval tm4. When a program describing the order of mounting components and the like on the printed circuit board 2 input to the component mounter 1 ends, that is, the component mounting machine 1
Is carried out from the XY table 11 (S2) and when the lubricating oil supply interval time T5 has been reached (S3), the valve 25 for supplying compressed air is opened (S4). After a lapse of the time T4 for supplying only the compressed air (S5), the pump is driven for T1 seconds (S6). Next, the pump is stopped for T2 seconds (S7).
When the specified time has been reached (S8), the compressed air valve is closed (S9).

In (Embodiment 1) and (Embodiment 2), the lubricating oil can be supplied by the operator pressing a button on the sub-operation panel 24. In this (Embodiment 3), the component mounting machine is used. The lubricating oil is periodically and automatically supplied by the timing device of the first control device 32.

Accordingly, it is possible to further reduce the maintenance work and improve the operation rate of the component mounting machine. In addition,
Although the present invention has been described with reference to the drawings and embodiments, various changes and modifications will be apparent to those skilled in the art. It is to be understood that such changes and modifications are intended to be included therein without departing from the scope of the invention as set forth in the appended claims.

For example, cams, cam followers, roller followers, bearings, and the like, as well as the linear motion guide mechanism using the lubricating oil supply mechanism according to the embodiment of the present invention, may be used as mechanical elements that repeatedly perform operations such as sliding and rotation. A lubricant supply mechanism can be applied to a ball screw or the like.

In each of the above embodiments, the nozzles 20a,
Although lubricating oil is injected from 20b to supply grease, it may be configured to supply oil by dripping from a nozzle.

[0045]

As described above, according to the component mounting machine of the present invention, it is possible to supply a constant amount of lubricating oil to mechanical elements such as a linear motion guide mechanism which performs sliding operation. In addition to preventing the occurrence, it saves lubricating oil, improves maintenance workability, shortens time, enables long-term stable operation of the component mounting machine, improves the operation rate, and extends the service life. realizable.

Further, by controlling the timing of opening the valve of the compressed air earlier than the operation timing of the pump unit for sending out the lubricating oil and controlling the timing of starting the supply of the lubricating oil after the pressure of the air reaching the pump unit increases, The atomization rate of the lubricating oil can be increased.

Further, by supplying the lubricating oil to the location where lubrication is required according to the operation time of the component mounting operation,
Since automatic refueling is possible, the component mounting machine can be operated unattended for 24 hours.

[Brief description of the drawings]

FIG. 1 is a side view of a lubricating oil injection nozzle mounting portion according to a first embodiment of the present invention.

FIG. 2 is a plan view of a lubricating oil injection nozzle mounting portion of the embodiment.

FIG. 3 is a configuration diagram of a lubricating oil injection nozzle according to the embodiment.

FIG. 4 is an external perspective view of the component mounting machine of the embodiment.

FIG. 5 is a side view of the component mounting machine of the embodiment.

FIG. 6 is a device system diagram of the pump unit according to the embodiment.

FIG. 7 is a diagram illustrating the operation of the present invention.

FIG. 8 is a diagram illustrating the operation of the present invention.

FIG. 9 is a diagram illustrating the operation of the present invention.

FIG. 10 is an external perspective view of a conventional component mounting machine.

FIG. 11 is an explanatory view of a device configuration of a conventional component mounting machine.

FIG. 12 is an explanatory diagram of a device configuration of a conventional component mounting machine.

FIG. 13 is a side view of a mounting head of a conventional component mounting machine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 component mounting machine 2 printed circuit board 3 carrier tape 4 component supply device 5, 6 supply table 7 supply table linear motion guide mechanism 8 carry-in transport device 9 unload transport device 10 XY table linear motion guide mechanism 11 XY table 12 Main shaft part 13 Mounting head 14 Nozzle 15 Linear motion guide mechanism of mounting head 16 Lever 17 Slider of linear motion guide mechanism 19 Guide block of linear motion guide mechanism 19 Linear motion guide mechanism 19a Guide rail of linear motion guide mechanism 19 Injection 20 Nozzle 21 Joint 22 Tube 23 Pump unit 24 Sub-operation panel 25 Compressed air supply valve 26 Tank 27 Pump 28 Venturi nozzle 29 Main piping 30 Distributor 31 Joint 32 Control device for component mounting machine

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yuzo Nishimori 1006 Kadoma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Term (reference) 5E313 AA01 AA11 CC02 EE22 FG10

Claims (3)

[Claims] 1. A component mounting machine having a mounting head for mounting an electronic component or the like on a printed circuit board, wherein a nozzle is provided so as to lubricate a mechanical element of a mechanical contact portion which requires lubrication, A component mounting machine with a lubricating oil supply device configured to supply lubricating oil to the machine element by pumping lubricating oil from the nozzle by compressed air by a pump unit and jetting or dripping the lubricating oil. 2. The method according to claim 1, wherein the timing of opening the valve of the compressed air is earlier than the operation timing of the pump unit for sending out the lubricating oil, and the lubricating oil is supplied at a timing when the pressure of the air reaching the pump unit is increased. A component mounting machine with a lubricating oil supply device as described. 3. The component mounting machine with a lubricating oil supply device according to claim 1, wherein the supply of the lubricating oil to the location requiring lubrication is performed according to the operating time of the component mounting operation.