JP2002263867A - Laser marking device and laser marking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser marking device capable of preventing a conveying fault caused by fine powder even if work feeding, laser marking and work discharging are performed by a single conveying table. SOLUTION: Work housing grooves 22 which house electronic parts W are provided in the device and also the device is provided with a turntable 21 rotating along the circumferential direction, a work feeding device 30 which feeds the electronic parts W in the work housing grooves 22, a marking device 40 which performs marking to the electronic parts W housed in the work housing grooves 22 by a laser beam, a work discharging device 50 which discharges the electronic parts W from the work housing grooves 22, and a fine powder removing device 60 which is arranged between the work discharging device 50 and the work feeding device 30 and removes the fine powder of the electronic parts W generated in the marking device 40 from the work housing grooves 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to laser marking for marking a chip-shaped electronic component (hereinafter, referred to as a "work") on the surface of a work while rotating and transporting the work in a work storage groove of a turntable. The present invention relates to an apparatus and a laser marking method, and particularly to an apparatus and a laser marking method capable of removing fine powder generated at the time of laser marking.

[0002]

2. Description of the Related Art As a laser marking device for marking a surface of a work while rotating and conveying the work while storing the work in a work storage groove of a turntable, for example, Japanese Patent No.
No. 7614 is known. The conventional laser marking device 1 is configured as shown in FIG. 3, for example. The laser marking device 1 includes a work supply device 2, first to fourth transfer tables 3 to 6, a laser marking device 7,
And trays 8a to 8c. The first to fourth transfer tables 3 to 6 are provided with work storage grooves 3a to 6a for storing the work W, respectively.

In such a laser marking device 1,
Work W conveyed in series by the work supply device 2
Is transferred to the first transfer table 3 that rotates intermittently, and is transferred to the second transfer table 4 that rotates intermittently in synchronization with the first transfer table 3. This second transport table 4
The characteristic of the workpiece W is measured in the process of transporting the workpiece W, and the workpiece W is transferred to the third transport table 5 which rotates intermittently in synchronization with the second transport table 4.

[0004] Based on the characteristics measured on the second transfer table 4, while the work W is transferred on the third transfer table 5, marking is performed by a laser marking device 7 provided above the work W on the third transfer table 5, Thereafter, the work W after marking on the fourth transfer table 6 intermittently rotating in synchronization with the third transfer table 5 is sorted according to the characteristic rank based on the characteristic measurement result on the second transfer table 4,
The sheets are discharged to the respective trays 8a to 8c.

[0005]

However, the above-described marking method using the laser marking apparatus 1 has the following problems. That is, at the time of laser marking on the third transfer table 5, the evaporated material is condensed to generate a small amount of fine powder, and as shown in FIG.
The adhered substance P made of fine powder adheres to the work storage groove 5a of the third transfer table 5 or the like. Therefore, the work storage groove 5
There is a possibility that a transfer failure may occur, such as the work W being not normally accommodated in a and being transferred in an inclined state.

In order to avoid the influence of the fine powder on the next step, several transfer tables are required. Therefore, a device for transferring the transfer tables is required, which complicates the device. Because the transport route is long,
The work W may be damaged by the rubbing.

[0007] Therefore, the present invention is capable of preventing a transfer failure due to fine powder even when a work is supplied, laser-marked, and discharged from a single transfer table, and reduces the number of times of transfer of the work, thereby reducing abrasion. It is an object of the present invention to provide a laser marking device and a laser marking method capable of minimizing the damage of a work caused by the laser marking.

[0008]

Means for Solving the Problems To solve the above problems and achieve the object, a laser marking apparatus and a laser marking method of the present invention are configured as follows.

(1) In a laser marking apparatus for marking a work with a laser beam, a work storage groove for housing the work is provided at predetermined intervals on an outer peripheral portion, and a turntable that rotates along a circumferential direction; A work supply unit for supplying the work to the work storage groove,
A laser marking unit for marking the work stored in the work storage groove with a laser beam, a work discharge unit for discharging the marked work from the work storage groove, the work discharge unit and the work A fine powder removing section disposed between the supply section and the fine section of the work generated in the laser marking section from the work storage groove.

(2) The laser marking apparatus according to (1), wherein the fine powder removing unit includes a brushing unit for brushing the work storage groove.

(3) The laser marking device according to (1) or (2), wherein the brushing section includes a rotary brush for brushing at least an upper surface of both upper and lower surfaces of the work storage groove. A suction nozzle is provided for suctioning and removing the fine powder in the work storage groove from a predetermined direction.

(4) In the laser marking device according to any one of (1) to (3), the fine powder removing section removes the fine powder in the work storage groove from a direction different from the predetermined direction. A sub-removal unit having a suction nozzle for performing suction removal is provided.

(5) In the laser marking method for marking a work with a laser beam, the work is rotated by rotating a rotary turntable provided with a plurality of work storage grooves provided on an outer peripheral portion for housing the work. A transporting step of rotating and transporting the storage groove, a work supply step of supplying the work to the work storage groove, a laser marking step of marking the work stored in the work storage groove with laser light, and the work A work discharging step of discharging the work having been marked from the storage groove, and a fine powder removing step of removing fine powder of the work generated in the laser marking step from the work storage groove. And

[0014]

FIG. 1 is a plan view showing a laser marking device 10 according to an embodiment of the present invention, and FIGS. 2A and 2B are diagrams illustrating removal of fine powder incorporated in the laser marking device 10. FIG. 3 is a diagram illustrating a main part of the device 60,
(A) is a longitudinal sectional view showing a main removing unit 70, and (b) is a longitudinal sectional view showing a sub removing unit 80. In the drawing, W indicates an electronic component (work).

The laser marking device 10 includes an electronic component W
Is provided with a transfer table 20 for performing the transfer. The transfer table 20 is driven by a drive motor (not shown) by an arrow R in FIG.
A turntable 21 that is intermittently driven in the direction, and is provided at regular intervals on a peripheral portion of the turntable 21;
A work storage groove 22 for holding the electronic component W; The work accommodating groove 22 is formed so that the electronic component W is fitted therein. As shown in FIG. The work suction groove 23 is related to the work storage groove 22, and prevents the electronic component W in the work storage groove 22 from jumping out due to centrifugal force generated with the rotation of the turntable 21, It has a function to prevent W from moving in the work storage groove 22.

A work supply device 30, a marking device 40, a work discharge device 50, and a fine powder removing device 60 are arranged on the periphery of the transfer table 20 along the direction of arrow R.

The work supply device 30 includes a work storage groove 22.
Has a function of supplying an electronic component W to the electronic device. The marking device 40 has a function of irradiating a predetermined surface of the electronic component W with laser light to perform marking. The work discharge device 50 has a function of transferring the electronic component W to a transporting means such as a carrier tape and carrying out the electronic component W.

The fine powder removing device 60 includes a main removing unit 70,
And a sub-removal unit 80. The main removing unit 70
As shown in FIG. 2A, a pair of brushing devices 71, which are arranged at positions sandwiching the work storage groove 22 from above and below,
72, and a suction nozzle 73 arranged radially outside the turntable 21 with respect to the work storage groove 22 and opposed to the work storage groove 22. The brushing devices 71 and 72 are provided with rotary air cylinders 71a and 72a, respectively.
Brushes 71b and 72 provided at the tip of 72a, respectively.
b.

As shown in FIG. 2B, the sub-removal section 80 has a suction nozzle 81 disposed below the work suction groove 23.

The laser marking device 10 configured as described above performs marking on the electronic component W in the following manner. That is, the electronic components W are supplied one by one into the work storage grooves 22 that have reached the work supply position by the work supply device 30. The turntable 21 rotates intermittently in the direction of arrow R, and holds the electronic component W held in the work storage groove 22.
Is transported to a marking position by the marking device 40. The marking device 40 irradiates a predetermined surface of the electronic component W with laser light to perform marking. At this time,
Fine powder made of the material of the electronic component W is generated. Part of the generated fine powder adheres to the work storage groove 22 and the periphery thereof.

The electronic component W marked by the marking device 40 is transported to a work discharge position by the work discharge device 50, stored in a carrier tape or the like, and carried out of the laser marking device 10 to the outside.

On the other hand, the work accommodating groove 22 reaches the main removing portion 70 of the fine powder removing device 60 with the intermittent rotation of the turntable 21. Here, the rotary air cylinder 71
The brushes 71b and 72b are rotationally driven by a and 72a, and the fine powder attached to the work storage groove 22 is scraped off. At the same time, the fine powder is suctioned and removed by the suction nozzle 73, and re-adhesion to the work storage groove 22 is prevented.

Next, the work accommodating groove 22 reaches the sub-removal section 80 of the fine powder removing device 60 with the intermittent rotation of the turntable 21. Here, the fine powder is suctioned and removed from the work suction groove 23 by the suction nozzle 81, and re-adhesion to the work storage groove 22 is prevented.

The work accommodating groove 22 reaches the work supply position by the work supply device 30 with the intermittent rotation of the turntable 21.

As described above, according to the laser marking device 10 of the present embodiment, the work accommodating groove 22 to which the fine powder generated by the laser marking adheres is kept clean by the fine powder removing device 60, Of the electronic component W can be prevented from occurring. Accordingly, the work supply device 30, the marking device 40, and the work unloading device 5 are placed on the same turntable 21.
Thus, the turntable can be unified, the work transfer path can be shortened, and damage to the electronic component W due to abrasion can be minimized.

The present invention is not limited to the above embodiment. That is, in the above-described embodiment,
The rotary air cylinders 71a and 72a are used as the rotation driving means of the brushes 71b and 72b.
Other means, such as a motor, may be used as long as b and 72b are driven to rotate. In addition, it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0027]

According to the present invention, even if the work is supplied, laser-marked, and discharged from a single transfer table, it is possible to prevent a transfer failure due to the fine powder, and to reduce the number of work deliveries. Thus, it is possible to minimize damage to the work due to the rubbing.

[Brief description of the drawings]

FIG. 1 is a plan view showing a laser marking device according to an embodiment of the present invention.

FIGS. 2A and 2B are views showing a fine powder removing unit incorporated in the laser marking device, wherein FIG. 2A is a longitudinal sectional view showing a main removing unit, and FIG.

FIG. 3 is a plan view showing an example of a conventional laser marking device.

FIG. 4 is a longitudinal sectional view showing a main part of a third transfer table incorporated in the laser marking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Laser marking device 20 ... Transport table 21 ... Turn table 22 ... Work storage groove 23 ... Work suction groove 30 ... Work supply device 40 ... Marking device 50 ... Work discharge device 60 ... Fine powder removal device 70 ... Main removal part 71 , 72: brushing device 71b, 72b: brush 80: sub-removal unit

Claims (5)

[Claims] 1. A laser marking apparatus for marking a work with a laser beam, wherein a work storage groove for housing the work is provided at a predetermined interval in an outer peripheral portion, and a turntable that rotates along a circumferential direction; A work supply unit that supplies the work to the work storage groove, a laser marking unit that performs marking on the work stored in the work storage groove with laser light, and a work that is marked from the work storage groove. A work discharge section for discharging, and a fine powder removing section disposed between the work discharge section and the work supply section, for removing fine powder of the work generated in the laser marking section from the work storage groove. A laser marking device. 2. The laser marking apparatus according to claim 1, wherein the fine powder removing section includes a brushing section for brushing the work storage groove. 3. The brushing section includes a rotary brush for brushing at least an upper surface of upper and lower surfaces of the work storage groove, and a suction nozzle for suctioning and removing fine powder in the work storage groove from a predetermined direction. The laser marking device according to claim 1, wherein 4. The apparatus according to claim 1, wherein the fine powder removing section includes a sub-removing section having a suction nozzle for sucking and removing the fine powder in the work storage groove from a direction different from the predetermined direction. Item 4. The laser marking device according to any one of Items 1 to 3. 5. A laser marking method for marking a work with a laser beam, wherein the work storage is performed by rotating a rotary turntable provided with a plurality of work storage grooves provided on an outer peripheral portion for storing the work. A transporting step of rotating and transporting the groove, a work supply step of supplying the work to the work storage groove, a laser marking step of marking the work stored in the work storage groove with laser light, and a work storage A work discharging step of discharging the work having been marked from the groove; and a fine powder removing step of removing fine powder of the work generated in the laser marking step from the work storage groove. Laser marking method.