JP4045951B2 - Laser irradiation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a laser irradiation system, and more particularly to a laser irradiation system provided with a fine adjustment stand for facilitating alignment of an irradiation line and a reference line of a laser marking device used for construction work or the like. The invention also relates to a fine adjustment stand for a laser marking device.
[0002]
[Prior art]
Using a laser marking device that irradiates a vertical line, horizontal line, or compound line via a lens using a semiconductor laser, a linear laser beam is irradiated on a processing target surface such as a floor at a predetermined irradiation angle at a building site, etc. Irradiation within a range (for example, 170 degrees) is performed, and so-called inking operation is performed in which a black line is drawn along the laser beam. For example, in order to install a plurality of fluorescent lamps on the ceiling in a row, a black line indicating the position of the fluorescent lamp fitting frame may be drawn on the ceiling surface. Since it is generally difficult to accurately draw a black line on the ceiling surface, as shown in FIG. 14, a reference line R indicating the place where the fluorescent lamp is installed is drawn in advance on the floor F, and the laser mark generator 110 is drawn. When the laser irradiation line from is matched with the reference line R, the laser beam of the line ab on the floor, the line bc on the vertical wall W, and the line cd on the ceiling is drawn over the above-mentioned irradiation angle range (170 degrees). If the line cd on the ceiling surface is in the same vertical plane as the line ab on the floor F, the laser light cd parallel to the reference line R is also drawn on the ceiling surface C. A black line can be drawn along.
[0003]
When the grounding surface is inclined, the level of the laser marking device can be adjusted so that the aircraft is leveled. Level adjustment is performed by adjusting the length of the leg by screwing back and forth by turning the leg with respect to the main body. Also, the rotation operation in the width direction is as small as 0.01 ° to 0.02 ° in the adjustment angle around the axis of the ink marking device body. Is extremely difficult. In view of this, an apparatus having a fine adjustment mechanism for horizontal rotation of a laser marking device has been proposed (see, for example, Patent Document 1).
[0004]
In Patent Document 1, laser irradiation including a fine adjustment stand having a fixed block having legs extending in the vertical direction and a rotating block rotating on the fixed block, and a laser marking device mounted on the rotating block. Describes the system. The rotating block includes a rotating table on which the laser marking device is placed and fixed, a rotating support base that rotatably supports the rotating table, and a rotation fine adjustment unit provided on the rotating support base. After roughly setting the horizontal direction of the laser beam from the laser marking device, the rotation fine adjustment unit can be operated to finely adjust the slide rotation of the turntable relative to the rotation support base, and the laser beam irradiation direction can be finely adjusted. .
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-4378 (FIGS. 1 to 6)
[0006]
[Problems to be solved by the invention]
Here, when the level is adjusted by placing a conventional laser marking device directly on the floor, the leg of the marking device body is screw-fitted, so it is relatively easy to move forward and backward by turning the leg. Level adjustment is possible. However, when the laser marking device is used on a tripod, it is necessary to adjust the level by inserting and removing the tripod leg, and the level adjustment is extremely troublesome. In addition, in the apparatus described in Japanese Patent Application Laid-Open No. 2001-4378, no specific proposal has been made for level adjustment in a state where the laser marking device is placed on the rotating block.
[0007]
Therefore, in the present invention, the level of the laser marking device can be easily adjusted with the laser marking device attached to the fine adjustment stand, and the laser marking device is mounted on the tripod with the laser marking device mounted on the fine adjustment stand. However, it is an object of the present invention to provide a laser irradiation system and a fine adjustment stand for a laser marker that can easily perform fine adjustment and level adjustment in the rotation direction.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is provided with a laser marking unit main body that includes a semiconductor laser unit and a lens and can irradiate vertical laser light and horizontal laser light, and a lower part of the laser marking unit main body. In a laser irradiation system having a laser marking device capable of level adjustment with a leg portion movable in a length direction, a fixed base, and a fixed base, which is fitted and mounted on the fixed base, is rotatable with respect to the fixed base In addition, there is provided a laser irradiation system including a fine adjustment stand having a rotary table whose upper surface is in contact with the leg portion, and a rotary table fine rotation adjustment mechanism in the fine adjustment stand.
[0009]
Here, the rotary table micro-rotation adjustment mechanism has a pin fixed to the fixed base and an adjustment screw that is screwed to the rotary table and engages with the pin. By advancing and retreating, the pin is urged in the horizontal direction to slightly rotate the rotary table.
[0010]
An adapter that can be fixed to the top of the tripod and provided with a rotation prevention surface is provided. The fixing base is formed with a fitting surface that fits the rotation prevention surface of the adapter, and the fixing base is fixed to the adapter. A fixing means is provided for this purpose.
[0011]
The rotary table is provided with an elastic band for fixing each leg of the laser marking device. Here, the rotary table is provided with a seat portion formed with a circular hole through which the leg portion is inserted, the leg portion is disposed in contact with the upper surface of the seat portion, and the band is the center of the circular hole. On the other hand, the rotary table is fixed to the circular hole at a position shifted to the rotational axis side of the rotary table.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
A laser irradiation system according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the entire laser irradiation system 1, which includes a laser marking device 10, a fixed base 20, a rotary table 30 on which the laser marking device 10 is placed and supported by the fixed base 20, and a fine rotation adjustment. Part 40.
[0017]
The laser marking device 10 includes a marking laser main body 11 and a plurality of (three) legs 12 containing a semiconductor laser unit (not shown) and a lens (not shown). A vertical irradiation port 13 for irradiating a vertical line in a predetermined angle range and a horizontal irradiation port 14 for irradiating a horizontal line in a predetermined angle range are formed in the upper portion and the center portion of the ink sink main body 11, respectively. Yes. For example, as shown in FIG. 14, the vertical line irradiation port 13 can irradiate vertical light over a range of about 170 degrees.
[0018]
The leg portion 12 includes an arm portion 15 that protrudes in the horizontal direction from the lower portion of the ink sink main body 11, and a columnar portion 16 that protrudes vertically downward from the arm portion 15 and has a male screw portion 16A formed at the tip (see FIG. 4) and a leg main body 17 located on the outer peripheral side of the cylindrical portion 16. The leg main body 17 includes a rotation operation portion 17A located at an upper portion thereof, and a female screw portion 17a that is screwed with the screw portion 16A. The rotation operation portion 17 </ b> A has a knurled outer peripheral surface, and a lower end surface forming a step portion forms an abutment surface 17 </ b> B that abuts the upper surface of the turntable 30. By rotating the rotation operation portion 17A, the female screw portion 17a is screwed back and forth with respect to the male screw 16A, and the columnar portion 16 is in contact with the upper surface of the rotary table 30. Move in the axial direction.
[0019]
The fixed base 20 is provided to rotatably support the rotary table 30, and includes a leg accommodating portion 21 that accommodates a lower portion of the leg main body 17 and a cylindrical portion 22. A small-diameter hole 22a is formed in the upper part of the cylindrical part 22 to be fitted to the outer peripheral surface of the lower annular convex part 34 of the rotary table 30 described later, and the adapter 50 described later is fitted in the lower part of the cylindrical part 22. A large-diameter hole 22b is formed. Further, a pin 41 that is a part of a minute rotation adjusting mechanism, which will be described later, is erected and fixed to the fixed base 20. The large-diameter hole portion 22b has a cross-sectional shape that is not a perfect circle, and has a shape in which a chord portion 22c is provided in part and is thick as shown in FIG.
[0020]
The rotary table 30 includes an upper annular protrusion 31 that fits in the lower part of the ink deinking device main body 11, a seat portion 32 into which the leg portion 12 is inserted, an outer frame portion 33 of a minute rotation adjusting mechanism, and a lower annular convex portion 34. It is a monolith that consists of A circular recess is formed at the lower end of the inking device main body 11 and is loosely fitted and arranged on the outer peripheral surface side of the upper annular protrusion 31. Here, the outer diameter of the upper annular protrusion 31 is formed to be smaller than the inner diameter of the circular recess at the lower end of the inking device main body 11 to provide a gap therebetween, and the inking device 10 is placed on the rotary table 30. In this case, the rotation axis of the ink discharger 10 is configured to substantially coincide with the rotation axis 30a of the rotary table 30, but the ink discharger main body 11 is transverse to the rotary table 30 by a gap. Slightly displaceable. The top surface of the seat portion 32 forms an upper contact surface 32A that contacts the contact surface 17B of the rotation operation portion 17A of the leg portion 12. The seat 32 is formed with a circular hole through which the leg main body 17 is inserted. The inner diameter of the circular hole is slightly larger than the outer diameter of the leg 12 and a gap is formed between the two. Can move slightly in the lateral direction within the inner peripheral surface of the seat 32. Therefore, even when the laser irradiation system is installed on the inclined installation surface, the level adjustment corresponding to the inclination can be performed by the gap.
[0021]
When the rotary table 30 is placed on the fixed base 20, the outer peripheral surface of the lower annular convex portion 34 is rotatably fitted in the small-diameter hole portion 22a of the fixed base 20, and the inking device 10, the rotary table 30, The fixed base 10 can be coaxially arranged around the axis 30a. A plate 35 is fixed to the lower end surface of the lower annular convex portion 34 via a screw. The outer edge of the plate 35 overlaps the fixed base 20, so that the rotary table 30 is attached to the fixed base 20 so as not to be detached. The fixed base 20 and the rotary table 30 constitute a fine adjustment stand.
[0022]
The micro-rotation adjustment unit 40 includes the pin 41 described above, an adjustment screw 42 that is engaged with the pin 41 and supported by the outer frame portion 33, and a knob 43 that is fixed to one end of the adjustment screw 42. As shown in FIG. 5, the adjusting screw 42 has a large-diameter male screw portion 42 </ b> A that is screwed into the female screw 33 a of the outer frame portion 33, an intermediate small-diameter portion 42 </ b> B, a flange portion 42 </ b> C, and a through hole formed in the outer frame portion 33. And a slide shaft portion 42D that slides with respect to the hole 33b. The axial length of the intermediate small diameter portion 42B is substantially the same as the diameter of the tip portion of the pin 41, and the tip of the pin 41 is engaged between the tip surface of the large diameter male screw portion 42A and the flange portion 42C. When the knob 43 is rotated, the adjustment screw 42 tends to move in the axial direction. However, since the pin 41 is fixed to the fixed base 20, the movement of the adjustment screw 42 is hindered, and the outer frame portion 33 of the rotary table 30 moves relative to the adjustment screw 42, resulting in the rotary table. By rotating 30 slightly around the axis 30a, the laser marking device 10 placed on the rotary table 30 rotates slightly, and the irradiation angle of the laser light in the horizontal direction can be adjusted.
[0023]
As shown in FIG. 6, when it is necessary to set the laser marking device 10 on the tripod 60 via the fine adjustment stand by the rotary table 30 and the fixed base 20, the adapter 50 as shown in FIG. Is fixed to the tripod 60 with a screw 61. As described above, the adapter 50 is provided so as to be fitted into the large-diameter hole 22b of the fixed base 20. The thick chord portion 22c of the fixed base 20 is formed with a fitting surface 22d having a linear cross section and is screwed with the fixing knob 52. The upper rib 51 of the adapter 50 is fitted with the fitting surface 22d. A linear rotation preventing surface 51a is formed. And the front-end | tip of the fixed knob 52 is comprised so that the rotation prevention surface 51a can be pressed. Therefore, the fixed base 20 is fixed to the adapter 50 in a state in which the fixed base 20 is non-rotatably fitted to the adapter 50.
[0024]
When the laser marking device 10 is used as a single unit, the tips of the three leg main bodies 17 are installed on the floor and the respective rotary operation portions 17A are rotated and operated as in the conventional case. The level of the laser marking device 10 can be adjusted by moving each cylindrical portion 16 in the axial direction with respect to the main body 17.
[0025]
As shown in FIG. 1, when the laser marking device 10 is placed on a fine adjustment stand, both fine rotation adjustment and level adjustment can be realized. In the level adjustment, the position of the columnar portion 16 in the axial direction is changed with respect to the leg main body 17 by rotating the rotation operation portion 17A of the laser marking device 10. At this time, since the contact surface 17B of the rotation operation portion 17A is in contact with the upper contact surface 32A of the turntable 30, the height of each cylindrical portion 16 is individually adjusted with respect to each seat portion 32. Therefore, the level can be adjusted with the laser marking device 10 set on the rotary table 30. Further, by rotating the knob 43 in this state, the rotary table 30 can be rotated by a small angle on the fixed base 20, and fine adjustment in the horizontal direction of the laser beam can be performed.
[0026]
As shown in FIG. 6, when the laser irradiation system 1 is mounted on a tripod, the adapter 50 is fixed to the upper part of the tripod 60, and the fixed base 20 is non-rotatably fitted to the adapter 50. The fixed base 52 is fixed to the adapter 50 by the fixed knob 52 provided on the fixed base 20, so that the rotary table 30 is attached to the fixed base 20 while preventing the fixed base 20 from rotating when the knob 43 is operated. On the other hand, it can be rotated minutely. Further, the level of the laser marking device 10 can be adjusted in the same manner as in the state of FIG.
[0027]
A laser irradiation system according to a second embodiment of the present invention will be described with reference to FIGS. In these drawings, the same members as those in the laser irradiation system 1 in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the laser irradiation system 101 according to the first embodiment, the outer diameter of the upper annular protrusion 31 is formed smaller than the inner diameter of the circular recess at the lower end portion of the inking device main body 11, and a gap is provided between them. Even when the laser irradiation system 1 is installed on an inclined installation surface, the inner diameter of the seat portion 32 is formed slightly larger than the outer diameter of the leg portion 12 to form a gap therebetween. The level adjustment corresponding to the inclination becomes possible by the gap. However, this gap may cause the laser marking device 10 to shift laterally with respect to the fine adjustment stand. Further, since the leg portion 12 of the laser marking device 10 is expanded and contracted for level adjustment, the laser marking device 10 is simply placed on the rotary table 30 of the fine adjustment stand. There is a risk that the ink sump device 10 may fall over and fall from the fine adjustment stand. The laser irradiation system according to the second embodiment solves this problem.
[0028]
9, 10, and 11, a concave groove 132 a is formed on the rotation axis 30 a side of the center of the hole of the seat portion 132 of the rotary table 130, and the concave groove 132 a is a circular shape made of an elastic body. The band 70 is disposed. The circular band 70 is in a position that crosses the hole of the seat 132 through which the leg 17 is inserted.
[0029]
According to the enlarged view shown in FIG. 13, the outer diameter of the upper annular protrusion 31 is formed smaller than the inner diameter of the circular recess at the lower end of the inking device main body 11 to provide a gap S <b> 1 between the two. The inner diameter of the portion 132 is slightly larger than the outer diameter of the leg main body 17, and a gap S2 is formed between them.
[0030]
8, 12, and 13 show a state in which the laser marking device 10 is placed on the fine adjustment stand. As in the first embodiment, laser marking is performed on the seat 132 of the rotary table 130. The arm 15 of the laser marking device 10 is elastically fixed by the band 70 in a state where the leg main body 17 of the device 10 is inserted. When the level adjustment of the laser marking device 10 is performed on the rotary table 130 of the fine adjustment stand, the cylindrical portion 12 moves in the axial direction with respect to the leg main body 17 in the leg portion 12 of the laser marking device 10, The band 70 expands and contracts following the movement amount. Therefore, even if there is a gap S1 between the upper annular protrusion 31 and the circular concave portion at the lower end of the inking device body 11 and a gap S2 between the inner peripheral surface of the seat portion 132 and the outer peripheral surface of the leg main body 17, The laser marking device 10 can be fixed to the fine adjustment stand without rattling. Further, since the band 70 slightly crosses the axial center 30a side from the center position of the hole of the seat portion 132, when the leg main body 17 is inserted into the seat portion 132, the leg portion 12 is axially centered by the elastic force of the band 70. 30a is urged equally outward in the radial direction, and deviation of the rotation centers of the laser marking device 10 and the fine adjustment stand is suppressed. Further, the level can be adjusted by tilting the laser marking device 10 while the fine adjustment stand and the laser marking device 10 are fixed to each other.
[0031]
The laser irradiation system according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims. For example, the fitting between the fixed base 20 and the adapter 50 is not limited to the shape shown in FIG. 7, but a concave or convex engaging portion is provided on the fixed base side, and a convex or concave portion is provided on the adapter side. Thus, the engaging portion may be engaged.
[0032]
【The invention's effect】
According to the laser irradiation system of the first aspect, when the laser marking device is placed on the fine adjustment stand, the leg of the laser marking device is brought into contact with the upper surface of the rotary table, so that the leg is placed on the fine adjustment stand. The level of the laser marking device can be adjusted by adjusting the movement of the part. Further, an existing laser marking device having no fine rotation adjusting mechanism can be used by being attached to the fine adjusting stunt of the present invention. Furthermore, the horizontal irradiation direction of the laser beam can be finely adjusted by operating the fine rotation adjusting mechanism with the laser marking device placed on the fine adjustment stand.
[0033]
According to the laser irradiation system of the second aspect, only the combination of the pin and the adjusting screw is used, and the adjusting screw is screwed back and forth while maintaining the engagement relationship, thereby pressing the pin against the fixed base. The rotary table can be rotated by a minute angle, and the horizontal laser irradiation angle can be easily adjusted with a small number of parts.
[0034]
According to the laser irradiation system of the third aspect , when the fine adjustment stand is used on the tripod, the fixing base can be fixed to the tripod by the adapter and the fixing means, and the fine rotation adjustment and level adjustment of the rotary table can be performed on the tripod. It becomes.
[0035]
According to the laser irradiation system as set forth in claim 4, by using the elastic material as the band for fixing the laser marking device to the fine adjustment stand, the laser marking device is fixed to the fine adjustment stand. The level can be adjusted by tilting.
[0036]
According to the laser irradiation system of claim 5 , the band can be disposed at a position where the band crosses the hole through which the leg is inserted, and the leg is radially outward by the elastic force of the band when the leg is inserted. Be energized by. Therefore, rattling of the fitting portion between the laser marking device and the rotary table is eliminated, and the fine adjustment stand and the marking device are easily centered.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a laser marking device is installed on a fine adjustment stand in a laser irradiation system according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a fine adjustment stunt according to the first embodiment of the present invention.
3 is a cross-sectional view taken along the line III-III in FIG.
FIG. 4 is a cross-sectional view showing a state in which a laser marking device is installed on a fine adjustment stand in the laser irradiation system according to the first embodiment of the present invention.
5 is a cross-sectional view taken along line VV in FIG.
FIG. 6 is a perspective view showing a state in which the laser irradiation system according to the first embodiment of the present invention is mounted on a tripod.
7A and 7B show a connection state between the adapter and the fixed base of the laser irradiation system according to the first embodiment of the present invention, where FIG. 7A is a cross-sectional view and FIG. 7B is a cross-sectional view along the line VII-VII. .
FIG. 8 is a perspective view showing a state in which a laser marking device is installed on a fine adjustment stand in a laser irradiation system according to a second embodiment of the present invention.
FIG. 9 is a perspective view showing a fine adjustment stand according to a second embodiment of the present invention.
10 is a sectional view taken along line XX in FIG.
11 is a plan view of the vicinity of the seat portion of the rotary table as seen from the direction of arrow XI in FIG.
12 is a cross-sectional view taken along the line XII-XII of FIG. 8 showing a state in which the laser marking device is installed on the fine adjustment stand in the laser irradiation system according to the second embodiment of the present invention.
FIG. 13 is an enlarged cross-sectional view showing a state in which a laser marking device is installed on a fine adjustment stand in a laser irradiation system according to a second embodiment of the present invention.
FIG. 14 is an explanatory view showing a line irradiation state of a conventional laser marking device.
[Explanation of symbols]
1 ... Laser irradiation system, 10 ... Laser marking device, 11 Marking device body,
12 ... Leg part, 17 ... Leg part body, 17B ... Contact surface, 20 ... Fixed base, 22b ... Fitting surface, 30 130 ... Rotary table, 32A ... Upper contact surface, 40 ... Minute rotation adjustment part, 41 ... Pin ... 42 ... Adjustment screw 43 ... Knob 50 ... Adapter 51a ... Anti-rotation surface 52 ... Fixing knob 60 ... Tripod 70 ... Band

Claims (5)

A laser marking unit main body capable of irradiating vertical laser light and horizontal laser light with a built-in semiconductor laser unit and a lens, and a plurality of legs provided at the bottom of the laser marking unit main body and movable in the length direction In a laser irradiation system having a laser marking device capable of level adjustment with
A fine adjustment stand having a fixed base and a rotary table fitted to and mounted on the fixed base and rotatable with respect to the fixed base and having an upper surface in contact with the leg portion is provided in the fine adjustment stand. A laser irradiation system comprising a rotary table micro-rotation adjustment mechanism.   The rotary table micro-rotation adjustment mechanism has a pin fixed to the fixed base and an adjustment screw that is screwed to the rotary table and engages with the pin. 2. The laser irradiation system according to claim 1, wherein the rotating table is slightly rotated by urging the pin in a horizontal direction.   An adapter that can be fixed to the top of the tripod and has a rotation preventing surface is provided, and the fixing base is formed with a fitting surface that fits the rotation preventing surface of the adapter, and the fixing base is fixed to the adapter. The laser irradiation system according to claim 1, wherein a fixing means is provided.   2. The laser irradiation system according to claim 1, wherein the rotary table is provided with an elastic band for fixing each leg portion of the laser marking device. The rotary table is provided with a seat portion formed with a circular hole through which the leg portion is inserted, the leg portion is disposed in contact with the upper surface of the seat portion, and the band is located with respect to the center of the circular hole. 5. The laser irradiation system according to claim 4, wherein the laser irradiation system is fixed to the circular hole at a position shifted to the rotation axis side of the rotary table.

Images