JPH0890355A - Bulk cassette - Google Patents

Abstract

PURPOSE: To eliminate the clogging of the chip parts caused by the suction of the chip parts due to the generation of the static electricity inside a bulk cassette to feed the chip parts to a parts fitting machine. CONSTITUTION: In a bulk cassette where the chip parts to be fed from a bulk case are fed to a parts feeding part to feed the parts to a parts fitting machine one by one with the main air to be fed from a main air feeding port 14 to a parts carrying passage, a supplementary air feeding port 20 to feed the supplementary air to the parts carrying passage is formed at the prescribed part of a cassette body, and when the chip parts are not normally, fed to the parts feeding part with the air from the main air feeding port 14, the chip parts are fed to the parts feeding part with the supplementary air to be fed from the supplementary air feeding port 20.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a novel bulk cassette. Specifically, in a bulk cassette for supplying chip components to a component mounting machine, a new bulk cassette provided with means for eliminating clogging of chip components caused by adsorption of chip components due to generation of static electricity inside the bulk cassette. It is the one we are trying to provide.

[0002]

2. Description of the Related Art Chip parts (electronic parts) on a printed circuit board
There is known a high-speed chip component mounting machine for mounting. This will be briefly described with reference to FIGS. 6 to 8.

Reference numeral a is a high-speed chip component mounter, which is a component supply device b for supplying chip components in a bulked state, that is, in an unloaded state, to a printed circuit board at a central portion thereof.
It has. c is a moving base of the component supply device b, and a large number of bulk cassettes d, d,
Are arranged in the moving direction of the moving base.

The bulk cassette d is known, and an engaging portion (not shown) at its front end is engaged with the front end of the moving base c, and a clamp pawl e provided at its rear end is operated by a clamp lever f. Is attached to the moving base c by engaging with the rear end of the moving base c.

Reference numeral g denotes a bulk case, and a large number of chip parts h, h, ... Are stored in the bulk case g. The bulk case g has a thin box shape, and an opening i is formed in the front end surface thereof, and the opening i is opened and closed by a shutter j.

The bulk case g is engaged with the guide portion k of the bulk cassette d so that the bulk cassette d is
, And the shutter j is slid to open the opening i. In this way, the bulk case g is set in the bulk cassette d.

When the chip part is taken out from the bulk case g, when the feed lever 1 of the bulk cassette d is pushed downward by a pressing portion (not shown), positive pressure air is supplied from the positive pressure air supply hole m, whereby The chip components h are supplied one by one to the component supply section o near the front end through the chute n.

The chip component h supplied to the component supply section o is taken out by the suction nozzle p and mounted on the printed circuit board.

[0009]

By the way, in the above-mentioned bulk cassette d, static electricity is generated by friction between the inner surface of the bulk cassette d and the chip component h, and the chip component h is charged. In some cases, the charged chip parts h, h, ... May become lumps and become immobile at the entrance q of the chute n. Then, the chip component h is not supplied to the component supply unit o, so-called component supply error occurs, and the component mounting machine a stops.

In this case, since the bulk cassette d is not always supplied with positive pressure air, the above-mentioned mass of chip parts h, h, ... It was given and solved to release the component supply error condition.

However, in such a primitive method in which the bulk cassette d is vibrated or shocked manually, there is a risk that the bulk cassette d will be damaged or the hand will be torn, and a method of improvement is required. Was there.

[0012]

In order to solve the above-mentioned problems, the bulk cassette of the present invention uses one chip component supplied from the bulk case by the main air supplied from the main air supply port to the component transfer path. In the bulk cassette that feeds the component supply unit that supplies the component to the destination component mounting machine, the auxiliary air supply port that supplies the auxiliary air to the component transfer path is formed at a predetermined location in the cassette body, and the air from the main air supply port is supplied. However, if the chip component is not normally supplied to the component supply unit, the chip component is sent to the component supply unit by the auxiliary air supplied from the sub air supply port.

[0013]

Therefore, in the bulk cassette of the present invention, when the clogging of the chip parts as described above occurs, the auxiliary air supplied from the sub air supply port can be sent to the part supply section. Since clogging can be cleared quickly and there is no need to manually apply vibration or impact to the bulk cassette as in the past, damage to the bulk cassette due to clogging of chip parts and hand injury to workers etc. Can be prevented.

[0014]

The details of the bulk cassette of the present invention will be described below with reference to the illustrated embodiments.

In the figure, 1 is a bulk cassette, 2 is its frame, and the required members are attached to the frame 2. Since the bulk cassette 1 is the same as the known one except for the air circuit, the parts other than the air circuit will be briefly described.

Reference numeral 3 is a frame guide, and the guide 3
And the bulk case 4 is attached. The bulk case 4 has a flat box shape, and an opening 5 is formed at the front end thereof, and the opening 5 is opened and closed by a shutter 6. Reference numeral 7 is a knob provided at the base end of the shutter 6, and is located in a facing hole 8 formed on the upper surface. The bulk chip components 9, 9, ... Are stored and supplied in such a bulk case 4. When the bulk case 4 is attached to the bulk cassette 1, the shutter 6 is opened and the opening 5 is opened.

As described above, when the bulk case 4 is attached to the bulk cassette 1, the chip parts 9, 9, ... Are supplied to the inlet portion 11 of the chute 10.

Then, when the pressing portion of the component mounting machine (not shown) presses the feed lever 12, the chip component 9 is supplied to the individual component supplying portion 13. That is, when the feed lever 12 is pressed, positive pressure air is supplied from a positive pressure air supply device (not shown) connected to the main air supply port 14, and the positive pressure air causes the chip component 9 to pass through the chute 10 and components. It is supplied to the supply unit 13.

Reference numeral 15 denotes an air supply path extending inward from the main air supply port 14, and the air supply path 1
5 is branched at its tip into two parts, one of which is a nozzle for stirring parts 1 which is opened at the lower surface of the inlet of the chute 10.
6, and the other end is connected to a component chute nozzle 17 that is opened on the lower surface of the middle portion of the chute 10 toward the component supply unit 13 side. Incidentally, 18 is the air supply passage 1
5 is a check valve inserted at a position near the main air supply port 14 to prevent backflow of the air supplied into the air supply passage 15 to the main air supply port 14 side.

When positive pressure air is supplied from the main air supply port 14 (hereinafter, the positive pressure air supplied from the main air supply port 14 is referred to as "main air"),
The main air is sprayed from the component stirring nozzle 16 and the component chute nozzle 17 via the air supply passage 15, and the chip components 9, 9, ... Located at the inlet 11 are agitated, and The component 19 drops into the chute 10 and is further sent to the component supply unit 13 by the main air jetted from the component chute nozzle 17.

By repeating the passage of the chip components 9, 9, ... In the chute 10, static electricity is accumulated in the bulk cassette 1, and the static electricity causes the chip components 9, 9 ,. Parts supply section 1
It may not be sent to 3. When such a component supply error occurs, the main air is not supplied from the main air supply port 14 and the main air is not supplied.

Reference numeral 19 denotes a side passage, which is the air supply passage 15
Of the check valve 18 and the branch passage, and is connected to an auxiliary air supply port 20 opened on the side surface of the bulk cassette 1.

Reference numeral 21 is a blow brush-shaped auxiliary air supply member, which is attached to the rear end of the frame 2.
Reference numeral 22 denotes a tube for supplying auxiliary air, which is connected between the auxiliary air supply port 20 and the auxiliary air supply member 21.

Then, the chip component 9 as described above,
When the supply error of 9, ... Occurs and the supply of the main air is stopped, the auxiliary air supply member 21 is pressed. As a result, the positive pressure air generated by the auxiliary air supply member 21 (hereinafter, the positive pressure air generated by the auxiliary air supply member 21 is referred to as “auxiliary air”).
2, is supplied to the component stirring nozzle 16 and the component chute nozzle 17 via the side passage 19, and these nozzles 1
It is injected from 6 and 17. By this, shoot 10
, Which had formed a lump in the inlet portion 11 or its vicinity, are agitated by the auxiliary air jetted from the component agitation nozzle 16 to dissolve the lump, and in the middle of the chute 10. The chip component 9 that has been caught is sent to the component supply unit 13 by the auxiliary air jetted from the component chute nozzle 17, and by this,
The condition of component supply error is released.

The auxiliary air supply member 21 may be pressed manually, or a dedicated automatic device may be provided to operate the automatic device when a component supply error occurs in a component mounting machine (not shown). Then, the auxiliary air supply member 21 may be pressed. Alternatively, the auxiliary air supply port 20 may be connected to a dedicated positive pressure air generator so that the positive pressure air generator operates to supply auxiliary air when a component supply error occurs.

Further, the shape of the auxiliary air supply member 21 is not limited to that shown in the figure, and any shape can be used as long as the shape can be restored by itself after being pressed.

In the bulk cassette 1 described above, the chip components 9, 9, ... Can be caught in the middle of the chute 10 or the like, and they can be charged with static electricity to form a lump, which cannot be separated one by one. When this happens, auxiliary air can be supplied to eliminate this, so unlike the conventional method of manually applying vibration or impact to the bulk cassette,
It is possible to prevent a situation in which the bulk cassette is damaged or the worker is injured.

[0028]

As is apparent from the above description, in the bulk cassette of the present invention, the chip parts supplied from the bulk case are delivered to the individual parts by the main air supplied from the main air supply port to the part conveying path. In a bulk cassette that feeds components to the mounting machine, a sub-air supply port that supplies auxiliary air to the component transport path is formed at a predetermined location on the cassette body, and chips are fed by air from the main air supply port. When the component is not normally supplied to the component supply unit, the chip component is sent to the component supply unit by the auxiliary air supplied from the sub air supply port.

Therefore, in the bulk cassette of the present invention, when the chip component is clogged as described above, the auxiliary air supplied from the sub air supply port can be sent to the component supply unit. Clogs can be cleared quickly, and there is no need to manually apply vibration or impact to the bulk cassette, as in the past.
It is possible to prevent damage to the bulk cassette and injury to the hands of workers due to clogging of chip parts.

It should be noted that the shapes and structures of the respective parts shown in the above-mentioned embodiments are merely examples of the embodiment when carrying out the present invention, and the technical scope of the present invention is limited thereby. It should not be construed in a conventional way.

[Brief description of drawings]

1 shows an example of implementation of the bulk cassette of the present invention together with FIGS. 2 to 5, and is a schematic perspective view.

FIG. 2 is an enlarged sectional view showing a main part.

3 is a cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a circuit diagram showing an air supply path.

FIG. 5 is a perspective view showing a bulk case.

6 is a schematic view of a component mounting machine together with FIG. 7, and is a perspective view.

FIG. 7 is a side view.

FIG. 8 is a schematic perspective view showing a conventional bulk cassette.

[Explanation of symbols]

 1 Bulk Cassette 4 Bulk Case 9 Chip Parts 10 Chute (Parts Transfer Path) 13 Parts Supply Section 14 Main Air Supply Port 15 Air Supply Path 18 Check Valve 19 Bypass 20 Sub Air Supply Port 21 Auxiliary Air Supply Member (Air Supply Means)

Claims (4)

[Claims] 1. A bulk cassette for sending chip parts supplied from a bulk case to a parts supply unit for supplying parts to a single-part mounting machine with main air supplied from a main air supply port to a parts conveying path. An auxiliary air supply port for supplying auxiliary air to the component transfer path is formed at a predetermined location of the cassette main body, and if the chip component is not normally supplied to the component supply unit by the air from the main air supply port, A bulk cassette characterized in that chip components are sent to the component supply section with auxiliary air supplied from a supply port. 2. A side passage is formed in an air supply path from the main air supply opening to the component conveying path, and an outer end of the side passage is used as a sub air supply opening. Bulk cassette. 3. A check valve for allowing air to pass only in one direction is inserted in a portion from the main air supply port to a branch portion of the air supply passage with the side passage. The bulk cassette according to 2. 4. The bulk cassette according to claim 1, further comprising an air supply means for manually supplying air to the sub air supply port.