JP2833284B2 - Laser marking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser marking apparatus for marking characters, figures, figures, and the like on electronic parts, mechanical parts, tools, industrial products such as press dies, precious metals, accessories, and the like at high speed.

[0002]

2. Description of the Related Art In recent years, laser marking apparatuses have been used as a method for marking not only semiconductors and electronic parts but also product numbers, classification symbols, figures, etc. of various kinds of products.

[0003] A conventional laser marking apparatus will be described below. FIG. 6 shows an example of a method of transporting a processed member of a conventional laser marking apparatus. In FIG. 6, 1
Is a laser marker, 2 is a main transport path for loading a processing member, 3a
3d is a storage device for processing members, 4a to 4d are sub-transport paths for loading processing members, 5 is a main transport path for unloading processing members, 6a
Reference numerals 6d to 6d denote storage devices for processed members, and 7a to 7d denote sub-transport paths for carrying out processed members.

[0004] The operation of the method of transporting the processed member of the laser marking device configured as described above will be described below.

First, a description will be given of a method of transporting a processing member transported from the storage device 3d to the main transport path 2 via the auxiliary transport path 4d to the laser marker 1.

The processing member taken out of the storage device 3d is moved to the sub-transport path 4d. Next, after the processing member is moved from the sub-transport path 4d to the main conveyance path 2, the processing member on the main conveyance path 2 is conveyed. By repeating this operation several times intermittently, the laser marking process is started when the processing member reaches the position of the laser marker 1. When the laser marking process is completed, the processed working member is stored in the storage device 6a from the unloading main transfer unit 5 via the unloading sub-transportation unit 7a in the same manner as the above operation.

FIG. 7 shows an example in which a plurality of processing members are marked by a conventional laser marking apparatus. In FIG. 7, 8 is a laser oscillator, 9 is an optical fiber, 10 is a laser beam splitting optical system, 11a and 11b are laser beams, 12a and 12b are reflecting mirrors, 13a and 13
b is a processed member, and 14a and 14b are lenses.

The operation of the laser marking device configured as described above will be described below.

One end of an optical fiber 9 is connected to a laser oscillation end of the laser oscillator 8, and the other end of the optical fiber 9 is connected to a laser beam splitting optical system 10. The laser beam splitting optical system 10 splits a single laser beam oscillated from the laser oscillator 8 and transmitted to the laser beam splitting optical system 10 through the optical fiber 9 into two laser beams 11a and 11b, which are reflected. A plurality of processing members 1 are passed through mirrors 12a and 12b and lenses 14a and 14b.
3a and 13b are marked.

[0010]

However, in the construction of the above-mentioned conventional method for transporting a processed member, the main transport paths 2, 5 for loading and unloading the processed member, the storage devices 3a to 3d for storing a plurality of processed members, and storing. A plurality of sub-transport paths 4a to 4d, 7 for transporting a processing member between the devices 6a to 6d and the main transport paths 2, 5.
a to 7d and a complicated configuration. In addition, in this transport method, there is no positioning portion for the processing member, so that the accuracy of the marking position on the processing member becomes a problem.

Next, in the conventional configuration for marking a plurality of processing members, there is a problem that a laser beam oscillated by a laser oscillator 8 is split into a plurality of laser beams 11a and 11b by a laser beam splitting optical system 10. Had.

Further, in the prior art, in the case of supplying and taking out the processing member 13, positioning time, marking confirmation time, and marking at a plurality of positions of a polyhedron or a cylindrical processing member, the division to the next surface is performed after the completion of one surface marking. There was a problem that the marking had to be stopped during the delivery time.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a laser marking device capable of performing reliable marking with a simple configuration.

[0014]

In order to achieve this object, the present invention provides a turntable which is indexed and rotated.
Provided at the first station around the turntable,
Supply and take-out unit for supplying and removing the processing member, and
Provided at a second station around the turntable,
A positioning part for positioning the holding position of the processing member;
At the third station around the turntable
The workpiece is irradiated with laser to perform laser marking.
Laser marking part, around the turntable
Provided at the fourth station to check the marking
A marking confirmation section;
-Parts are held in the parts corresponding to the fourth station
Parts are provided, and parts are stored in the third station.
It has a configuration with a member indexing part that rotates the holding part.
is there.

[0015]

With this configuration, a simple transfer system is realized, and the positioning portion is provided on the turntable to improve the accuracy of the marking position on the processing member. Marking and laser marking stop time can be greatly reduced, and marking can be performed at a plurality of locations on a polyhedral or cylindrical processing member.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the laser marking apparatus according to the present invention. In FIG. 1, reference numeral 21 denotes a storage unit for processing members, 22 denotes a main transport path, 23 denotes a supply / extraction unit,
24a to 24b are chucks, 25 is a turntable, 2
6a to 26d are member holding parts, 27 is a positioning part, 28 is a laser generation part, 29 is a laser marking part, 30 is a member indexing part, 31 is a marking confirmation part, and 32 is a storage part of a marked processed member.

In this embodiment, a polyhedral processing member is used.
There are four 26d portions, and there are a total of twelve member holding portions, three in each portion.

The operation of the laser marking device configured as described above will be described below.

First, the processing member is transferred from the storage section 21 of the processing member to a main transport path 22 (for example, a free flow conveyor) of the processing member. The plurality of processing members arranged on the main transport path 22 are held by the chuck 24a, and the supply / removal unit 2
At the same time, a plurality of (three in this embodiment) processed members are held by the chuck 24b and transferred to the member holding portion 26a on the turntable 25 at 3 and the supply / removal portion 23
Is transferred from the member holding portion 26a on the turntable 25 to the main transport path 22.

After the plurality of processing members are transferred from the main transport path 22 to the member holding portion 26a on the turntable 25, the turntable 25 is rotationally indexed, and the plurality of processing members on the member holding portion 26a are rotated. Moves to the positioning section 27. The plurality of processing members on the member holding portion 26a are positioned in the height direction and the rotation direction by the positioning portion 27. The positioning in the height direction is performed by pressing the upper portions of the plurality of processing members, and the positioning in the rotation direction is performed by the member holding unit 2.
By rotating 6a, a plurality of processing members on the member holding portion 26a are respectively rotated, and each processing member is stopped and positioned at the positioning position. After the positioning is completed, the turntable 25 is rotationally indexed, and the plurality of processing members on the member holding unit move to the laser marking unit 29. Laser marking is performed by irradiating the laser light from the laser generator 28 onto one first surface of the plurality of processing members on the member holding part 26a. After the completion of the laser marking, laser marking is performed on the first surface of the adjacent processing member. In the meantime, the processing member that has completed the laser marking earlier moves the member holding portion 26a to the
Rotation indexing is performed by 0, and rotation indexing is performed for laser marking on the second surface of the processed member. This operation is repeated between a plurality of processing members, and laser marking is performed on all the processing members. FIG. 2 shows a timing chart of laser marking on a plurality of processing members (1), (2), and (3) and rotation indexing of each processing member.

After the completion of the laser marking for all of the plurality of processing members, the turntable 25 is rotated and indexed, and the plurality of processed members on the member holding portion 26a are checked by the marking confirmation portion 3.
Move to 1. While rotating and indexing each of the plurality of processed members on the member holding portion 26a one by one, the appearance is inspected using a camera or the like, and the marking, characters, figures, etc. are confirmed and inspected. This station can be used not only for marking confirmation but also for other purposes. After the markings of all of the plurality of processed members are checked and inspected, the turntable 25 is rotated and indexed, and the plurality of processed members on the member holding portion 26a move to the supply / extraction portion 23. Therefore, as described above, the plurality of processed members are held by the chuck 24b, and are transferred from the member holding portion 26a on the turntable 25 to the main transport path 22 by the supply / removal portion 23. Thereafter, the processed member is transferred from the main transport path 22 to the storage section 32 for the processed member, and is stored.

FIGS. 3 to 5 show detailed views of the member holding portion and the member indexing portion on the turntable portion of the laser marking device of the present invention, and the laser marking and the movement of the processed member will be described in detail. 3 to 5, 33 is a processing member, 34 is a laser beam, 26 is a member holding portion, 35 is a rotating shaft (A), 36 is a holder (A), 37 is a bearing (A), 25 is a turntable, 39 is a brake mounting plate, 40 is a brake plate, 41 is a spring, 42 is a brake ring, 43 is a cam follower mounting plate, 44 is a cam follower, 45 is a guide plate, 46 is a rotating shaft (B), 47
Is a holder (B), 48 is a bearing (B), 49 is a bearing nut, 50 is a timing pulley (A), 51 is a detection plate, 52 is a sensor, 53 is a sensor mounting plate, 54 is a timing belt, and 55 is a timing pulley. (B), 56 is a motor, 59 is a motor mounting plate, 58 is a flange shaft,
59 is an index unit, 60 is a base, and 61 is a housing.

The mechanism, operation, and laser marking of the member holding portion and the member indexing portion on the turntable portion of the laser marking device configured as described above will be described below.

First, after the plurality of processing members 33 are positioned at the positioning portion, the input shaft of the index unit 59 is rotated, and the turntable 25 is indexed by rotating the flange shaft 58 attached to the output shaft. At that time, the cam follower 44 moves from the positioning part 27 to the laser marking part 29 while rolling in the groove in the guide plate 45 and the rotating shaft (B) 46 as shown in FIG. The first surfaces of the plurality of processing members 33 moved to the laser marking section 29 are irradiated with laser light 34 from the laser generating section to perform laser marking. Processing member 33
When the laser marking of the first surface of the first is completed, the laser marking is performed on the first surface of the adjacent processing member 33 (second). In the meantime, the first processing member 33 on which the laser marking has been completed earlier is rotationally indexed from the first surface to the second surface. The mechanism and operation will be described in detail. The processing member 33 is held by the member holding section 26. The member holding section 26 is attached to a rotating shaft (A) 35, and the turntable 2 is held by a holder (A) 36 and a bearing (A) 37.
5 can be rotated. This rotation axis (A)
A brake ring 42 is attached to 35 and a brake plate 40 is applied by a spring force of a spring 41 from a brake attachment plate 39.
Is pressed against the brake ring 42 so that the rotation axis (A)
35, a structure for preventing a rotational overrun of the member holding portion 26 and the processing member 33. A cam follower 44 is attached to the end of the rotating shaft (A) 35 by a cam follower attachment plate 43. The cam follower 44 fits in a groove of the rotation shaft (B) 46. The rotating shaft (B) 46 has a holder (B) 47 attached to a guide plate 45 and a bearing (B) 48.
Can rotate. The bearing (B) 48 is fixed by a bearing nut 49. By rotating a motor 56 on a motor mounting plate 57 mounted on a base 60 on a housing 61, the rotation shaft (B) 46 is passed through a timing pulley (B) 55, a timing belt 54, and a timing pulley (A) 50. Rotate. The origin and the rotation angle of the rotation axis (B) 46 in the rotation direction can be confirmed by the sensor 52 and the detection plate 51 mounted on the sensor mounting plate 53.

Then, the rotation indexing from the first surface of the processing member 33 to the second surface is started by the signal of the completion of the laser marking on the first surface of the processing member 33. First, the motor 56 starts rotating by the rotation index angle. The rotating shaft (B) 46 rotates through the timing pulley (B) 55, the timing belt 54, and the timing pulley (A) 50. The rotating shaft (A) 35 rotates via the cam follower 44 and the cam follower mounting plate 43 fitted in the groove of the rotating shaft (B) 46, and the member holder 26 and the processing member 33 mounted thereon also rotate. It is confirmed by the detection plate 51 and the sensor 52 attached to the end of the rotating shaft (B) 46 whether the motor 56 has rotated by the rotation index angle by the motor 56, and the rotation indexing of the processing member 33 is completed.

The above operation is performed across a plurality of processing members 33, indexing and rotating all the processing surfaces in order, and laser marking is performed.
(Confirmed by the sensor 52), the laser marking is performed on the entire surface of the plurality of processing members 33, and the laser marking is completed. Subsequently, the turntable 25 is rotated by the index unit 59 and the flange shaft 58, and a plurality of new processing members 33 are moved to the laser marking unit 29.

The above is an example of the case of laser marking on the polyhedral processing member 33. However, in the case of a cylindrical or cylindrical processing member, the above method is used. It is also possible to perform laser marking while rotating continuously.

[0029]

As described above, according to the present invention, the cost of equipment can be reduced by realizing a simple transfer system and performing laser marking on a plurality of processing members with one laser beam. Further, by providing the positioning portion and the marking confirmation portion on the turntable, the quality of the laser marking can be secured and guaranteed. Further, by continuously performing the laser marking on a plurality of processing members and the rotation indexing of the processing surface, the laser marking stop time can be greatly reduced, thereby improving the productivity. In addition, laser marking can be performed on a plurality of portions of a polyhedral, cylindrical, or cylindrical processing member.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment of a laser marking device of the present invention.

FIG. 2 is a timing chart of the laser marking and rotation indexing of each processing member.

FIG. 3 is a top view of the apparatus.

FIG. 4 is a sectional front view of a main part of the apparatus.

FIG. 5 is a top view as viewed from AA in FIG. 4;

FIG. 6 is a schematic configuration diagram of a conventional laser marking device.

FIG. 7 is an explanatory diagram of the operation of the apparatus.

[Explanation of symbols]

 Reference Signs List 21 Storage section for processed member 22 Main transport path 23 Supply / removal section 24a, 24b Chuck 25 Turntable 26a to 26d Member holding section 27 Positioning section 28 Laser generation section 29 Laser marking section 30 Member indexing section 31 Marking confirmation section 32 Marking Storage part of processed parts

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masahiro Takagi 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. In-company (56) References JP-A-48-36651 (JP, A) JP-A-51-76089 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23K 26/00- 26/10 B23Q 16/06 B25H 7/04

Claims (1)

(57) [Claims] A turntable indexed and rotated;
At the first station around the turntable
Supply and unloading unit for feeding and unloading the processing member,
At the second station around the turntable
Positioning part for positioning the processing member holding position
At the third station around the turntable.
Laser marking on the workpiece
And a laser marking section for performing
It is provided at the fourth station in the surrounding area and checks the marking
And a marking confirmation unit for performing the
Parts for parts corresponding to the first to fourth stations
A holding unit is provided, and the third station has a unit.
A laser marking device provided with a member indexing unit for rotating a product holding unit .