JP4628192B2 - Laser marking device and its tilt adjustment attachment for tripod - Google Patents

Description

  The present invention relates to a laser ink which projects a horizontal reference line on a wall surface or a vertical reference line on a surface extending from a ceiling to a wall surface and further to a floor surface when performing construction work or room partitioning work. The present invention relates to an ejector and its tripod tilt adjustment attachment.

  Laser light is essentially light having an elliptical cross section, but becomes a single line of light by passing through a collimating lens and a cylindrical rod lens. If the central axis of the rod lens is directed in the vertical direction, horizontal line light can be projected, and if the central axis of the rod lens is directed in the horizontal direction, vertical line light can be projected. The laser marking device uses a laser unit that projects such vertical line light or horizontal line light, and includes a laser unit holder supported by a gimbal mechanism, and the laser unit is located at a predetermined position of the laser unit holder. It is supported. The laser unit holder is held in a predetermined posture without tilting by the gimbal mechanism, and thereby can project vertical line light or horizontal line light.

  Therefore, even if the posture is inclined with the laser marking device installed, it is possible to project vertical line light or horizontal line light, but in order to project more accurate vertical line light or horizontal line light. It is desirable that the deflection angle of the laser unit holder is zero, that is, when the laser marking device is installed, the laser marking device body is not inclined. Therefore, when installing a laser marking device, the tilt angle is adjusted by using a level, etc., and the posture is adjusted as little as possible.

  2 and 3 show an example of the inclination adjusting means in the conventional laser marking device. In FIG. 2, the laser marking device 50 is mounted on a pan head 56 of a tripod 54 via an angle adjustment attachment 52. The angle adjustment attachment 52 can adjust the front / rear / left / right inclination of the laser marking device 50. The laser marking device 50 emits, for example, laser light 58 that diffuses in the horizontal direction, and projects horizontal line light 59 onto the wall surface that is the object of irradiation.

  FIG. 3 shows a specific example of the angle adjustment attachment 52. In FIG. 3, a base plate 60 is placed on the pan head 56 of the tripod 54, and a mounting screw 58 provided through the pan head 56 from below to the top is screwed into a screw hole at the center of the base plate 60. Thus, the base plate 60 is fixed to the pan head 56. An appropriate number (for example, three) of adjusting screws 64 are screwed into the outer peripheral portion of the base plate 60. The adjustment screw 64 has a knob 62 for rotating the adjustment screw 64, and has a cylindrical portion 66 extending upward from the knob 62. There is a gap between the knob 62 of each adjustment screw 64 and the base plate 60, and a repulsive coil spring 68 inserted on the outer periphery of each adjustment screw 64 is interposed in this gap. The spring 68 is for preventing rattling or backlash between each adjustment screw 64 and the screw hole of the base plate 60, and biases the base plate 60 and the knob 62 of each adjustment screw 64 in a direction to separate them from each other. Yes. The columnar portion 66 of each adjustment screw 64 passes through a hole formed in the outer peripheral portion of the inking device receiving plate 70, and a stop ring is fitted to prevent the inking device receiving plate 70 from falling off. Each adjusting screw 64 can be rotated relative to the ink receiving plate 70. A setscrew 72 is rotatably fitted in the center of the inking device receiving plate 70 so as to pass through the inking device receiving plate 70 from the bottom to the top, and is attached to the bottom plate of the laser inking device (not shown). The laser marking device is fixed on the marking device receiving plate 70 by screwing the set screw 72 into the hole.

  Since the angle adjustment attachment 52 is configured as described above, the amount of screwing of each adjustment screw 64 with respect to the base plate 60 is changed by rotating each adjustment screw 64 forward and backward by operating the knob 62, and each knob The height position of 62 changes. Correspondingly, the attitude or inclination angle of the marking device receiving plate 70 and the laser marking device mounted thereon changes. If the adjustment screws 64 are provided at three locations, for example, the inclination of the laser marking device in the front-rear direction can be adjusted by one adjustment screw 64, and the laser marking, for example, can be adjusted by another adjustment screw 64. It can comprise so that the inclination of the left-right direction of a vessel can be adjusted.

  As a prior art similar to FIGS. 2 and 3, a fine adjustment stand having a rotary table fitted and mounted on a fixed base and capable of rotating with respect to the fixed base and having an upper surface abutting against a leg portion is provided. There is known a fine adjustment stand for a laser marking device in which the upper contact surface of the rotary table and the contact surface of the leg of the marking device are brought into contact so that the level adjustment of the laser marking device can be performed above. (For example, refer to Patent Document 1).

  However, when the inclination of the laser marking device is adjusted by the conventional angle adjustment attachment or fine adjustment stand as shown in FIGS. 2 and 3, the laser unit holder is shaken by the gimbal mechanism. The height position of the moving center fluctuates, the position of the line light set before that shifts, and it is necessary to reset the position of the line light again. This positional deviation of the line light can be said for both the horizontal line light and the vertical line light. As described above, according to the conventional laser marking device, it is necessary to reset the position of the line light after adjusting the tilt angle, and there is a problem that the adjustment is troublesome.

  Another prior art related to the present invention is a laser marking device comprising a laser unit holder that is swingably supported by a gimbal mechanism, and at least one laser unit attached to the laser unit holder. In order to detect the tilt of the laser unit holder, a laser is mounted on the laser unit holder by controlling the energization to the coil based on the output of the level sensor which consists of a level sensor attached to the laser unit holder and a magnet and a coil. There is known an automatic tilt adjustment mechanism having a thrust generating means for maintaining the posture (see, for example, Patent Document 2).

  In the invention described in Patent Document 2, the tilt of the laser unit holder is made zero by active control, and it is desirable that the amount of control is as small as possible for projecting more accurate horizontal line light or vertical line light. It is also necessary to be able to adjust the inclination of the laser marking device body. However, if the inclination of the laser marking device main body is adjusted, the position of the line light set in advance is shifted as in the above-described conventional example, and it is necessary to reset the position of the line light again. .

JP 2004-205260 A JP 2002-39756 A

  The present invention was made to solve the problems of the prior art described so far, even if the inclination angle of the laser marking device is adjusted, the position of the line light set in advance is not shifted, Accordingly, it is an object of the present invention to provide a laser marking device and a tripod tilt adjustment attachment that can eliminate the complexity of resetting the position of the line light.

  The present invention includes a laser unit holder suspended in a laser marking device body so as to be swingable via a gimbal mechanism and maintaining a predetermined hanging posture, and a laser marking device body which can be attached to a tripod. A base member having a receiving portion of a substantially integral member, and an adjusting screw for adjusting the inclination of the laser marking device by moving the substantially integral member of the laser marking device body along the receiving portion of the base member. And at least one of the receiving portion of the base member and a part of the member which is substantially integrated with the laser marking device body received by the receiving portion is a spherical seat, and the center of the spherical surface forming the spherical seat is the laser. The main feature is that it is the center of oscillation of the unit holder.

  When the inclination of the laser marking device is adjusted by the adjusting screw, the laser marking device body moves along the spherical seat. Since this moving locus draws an arc or a spherical surface centered on the oscillation center of the laser unit holder, the height position of the laser unit holder does not change. Therefore, there is no change in the height position of the laser light emitted from the laser unit holder, and the height position of the laser light, especially the height position of the horizontal line light, is readjusted every time the inclination of the laser marking device is adjusted. Can be eliminated.

Embodiments of the laser marking device and its tripod tilt adjustment attachment according to the present invention will be described below with reference to the drawings.
In FIG. 1, the code | symbol 10 has shown the laser marking device main body. The laser marking device body 10 is suspended so that the laser unit holder 14 can be swung by the gimbal mechanism 12 and can maintain a predetermined drooping posture, as in a conventional laser marking device. It has been. Reference numeral 18 denotes the oscillation center of the laser unit holder 14. A laser unit 16 is attached to the laser unit holder 14. The laser unit 16 includes a semiconductor laser as a laser light source, a collimating lens that makes divergent light emitted from the semiconductor laser a parallel light beam, and a cylindrical rod lens that diffuses the parallel light beam only in one direction. The laser unit 16 shown in FIG. 1 is configured such that the central axis of the rod lens faces the vertical direction, the parallel beam of the laser is diffused and emitted only in the horizontal direction, and the horizontal line light 38 is projected onto the wall surface to be irradiated. Yes. Reference numeral 36 denotes a laser beam emitted from the laser unit 16, and a window hole 19 for emitting the laser beam 36 outward is formed in the laser marking device body 10.

  The laser marking device body 10 has a tripod mounting hole at the bottom, and can be directly mounted on the tripod using this tripod mounting hole. In the embodiment shown in FIG. It is mounted on 30 pan heads 32. The angle adjustment attachment 20 mainly includes a base member 26, an inking device receiving member 22, and a plurality of adjustment screws 28. The base member 26 is placed on a pan head 32 of the tripod 30 and a mounting screw 34 that is rotatably provided through the pan head 32 from above is screwed into a screw hole of the base member 26 to thereby mount the pan head. 32 is fixed. The base member 26 has a concave spherical seat 264 on the upper surface side as a receiving portion of the inking device receiving member 22. The spherical seat 26 is formed in the shape of a belt having a constant width along an arc, with the edge of a circular hole centering on the screw hole into which the mounting screw 34 is screwed.

  The marking device receiving member 22 has a mounting screw 24 for integrally connecting the laser marking device body 10 by screwing into the tripod mounting hole of the laser marking device body 10. In the state in which the inking device receiving member 22 is integrally coupled to the laser inking device body 10, the inking device receiving member 22 may be a member that is substantially integrated with the laser inking device body 10. The inking device receiving member 22 has a convex spherical seat 222 on the lower surface side. The spherical seat 222 is formed in a band shape having a constant width along the arc, with the corners of the protrusion formed along the arc centering on the central axis of the ink receiving member 22 being chamfered. The spherical seat 222 is in contact with the concave spherical seat 264 of the base member 26. The spherical seat 264 of the base member 26 and the spherical seat 222 of the inking device receiving member 22 are formed along a spherical surface having the same radius, and the center of these spherical surfaces is a laser that is suspended swingably by the gimbal mechanism 12. It coincides with the swing center 18 of the unit holder 14.

  The inking device receiving member 22 can be moved along the spherical surface of the spherical seat 264 of the base member 26, whereby the inclination of the inking device receiving member 22 and the laser inking device body 10 integrated therewith can be adjusted. Can be adjusted. The tilt adjustment of the laser marking device body 10 can be performed by rotating the plurality of adjusting screws 28 forward and backward. Each adjustment screw 28 passes through a hole formed in the peripheral edge portion 224 of the inking device receiving member 22 and is screwed into a screw hole 262 formed in the peripheral edge portion of the base member 26. There is a gap between the upper surface of the peripheral portion of the base member 26 and the lower surface of the peripheral portion 224 of the inking device receiving member 22, and the inking device receiving member 22 can be tilted with respect to the base member 26 within the range of this gap. It is like that.

  If there are three adjustment screws 28 and these adjustment screws 28 are a, b, and c, respectively, the straight lines connecting b and c may be arranged so as to be orthogonal to the straight lines connecting a and b. With such an arrangement, for example, the inclination adjustment in the front-rear direction of the inking device can be performed using the adjustment screws a and b, and the inclination adjustment in the left-right direction can be performed using the adjustment screws b and c. it can.

  When the inclination of the inking device is adjusted by the adjusting screw 28, the inking device receiving member 22 and the laser inking device main body 10 move along the spherical seat 264 of the base member 26. The center of the spherical surface constituting the spherical seat 264 coincides with the swing center 18 of the laser unit holder 14. Although the laser unit holder 14 is relatively swung by the tilt adjustment, the height position of the swing center 18 does not change, so the height position of the laser light emitted from the laser unit 16 is the tilt adjustment of the inking device. Will not fluctuate based on. Therefore, it is possible to avoid the trouble of having to adjust the height position of the line light each time the inclination of the inking device is adjusted.

In the illustrated embodiment, the angle adjustment attachment 20 is interposed between the tripod 30 and the laser marking device body 10, but a mechanism corresponding to the angle adjustment attachment 20 is a part of the laser marking device itself. It may be incorporated in the laser marking device main body 10 as a member constituting.
In the illustrated embodiment, both the base member 26 and the inking device receiving member 22 are provided with spherical seats. With such a configuration, there is an advantage that the base member 26 and the inking device receiving member 22 come into contact with each other stably by surface contact. However, the spherical seat is formed on at least one of the base member 26 and the inking device receiving member 22, and the other member is in point contact or line contact with the spherical seat. It can be achieved and belongs to the technical scope of the present invention.

  The gimbal mechanism 12 has two horizontal axes in directions orthogonal to each other, and an intermediate swing frame is swingably supported with respect to the fixed portion by one horizontal axis, and the swing frame is supported by the other horizontal axis. On the other hand, the laser unit holder is swingably supported, and the two horizontal axes are on the same height plane. Therefore, there is one swing center 18 of the laser unit holder 14. However, there are cases where the height positions of the two shafts are different and the oscillation center differs depending on the oscillation direction of the laser unit holder 14. In order to apply the present invention to such a laser marking device, either one of the swing centers and the center of the spherical surface of the spherical seat coincide with each other, or the spherical seat is positioned at an intermediate position between the different swing centers. You may comprise so that the center of a spherical surface may correspond. If the center of oscillation of the laser unit holder 14 and the center of the spherical surface of the spherical seat substantially coincide with each other, it belongs to the technical scope of the present invention and the desired effect can be obtained.

  Although the illustrated embodiment is depicted as a laser marking device that projects only horizontal line light 38, the present invention also applies horizontal and vertical line light to a laser marking device that projects vertical line light. The present invention can be applied to a laser marking device for projecting and a laser marking device capable of projecting ground ink or heavenly ink.

It is sectional drawing which shows the Example of the laser marking device concerning this invention, and its inclination adjustment attachment for a tripod. It is a front view which shows roughly the example of the conventional laser marking device. It is a partial cross section front view which shows the example of the angle adjustment attachment used for the conventional laser marking device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Laser marking device body 12 Gimbal mechanism 14 Laser unit holder 16 Laser unit 18 Laser unit holder rocking center 20 Angle adjustment attachment 22 Marking device receiving member 26 Base member 28 Adjustment screw 30 Tripod 222 Convex spherical seat 264 Concave Shape spherical seat

Claims (6)

A laser unit holder suspended in a laser marking device body so as to be swingable via a gimbal mechanism and to maintain a predetermined hanging posture;
A base member that can be attached to a tripod and has a receiving portion of a member that is substantially integral with the laser marking device body;
An adjustment screw that adjusts the inclination of the laser marking device by moving a member substantially integral with the laser marking device body along the receiving portion of the base member,
At least one of the receiving part of the base member and a part of the member which is substantially integrated with the laser inking unit received by the receiving part is a spherical seat,
The laser marking device characterized in that the center of the spherical surface forming the spherical seat is the oscillation center of the laser unit holder. 2. The laser marking device according to claim 1, wherein the member that is substantially integral with the laser marking unit main body is a marking unit receiving member that is coupled to the laser marking unit main body using its tripod mounting hole. A concave spherical seat is formed on the base member, and a part of the ink receiving member received by the spherical seat is a convex spherical seat having a spherical surface centering on the oscillation center of the laser unit holder. 2. The laser marking device according to 2. 3. The laser marking device according to claim 2, wherein a plurality of adjusting screws are arranged on an outer peripheral portion of the marking device receiving member and are screwed into the base member through the marking device receiving member. An inking device receiving member that can be coupled to the laser inking device body using the tripod mounting hole;
A base member that can be attached to a tripod and has a receiving portion for the ink receiving member;
An adjustment screw for adjusting the inclination of the laser marking device by moving the marking device receiving member along the receiving portion of the base member;
At least one of the receiving part of the base member and a part of the inking device receiving member received by the receiving part is a spherical seat,
3. A tilt adjustment attachment for a tripod of a laser marking device, wherein the center of the spherical surface forming the spherical seat is the oscillation center of the laser unit holder. A concave spherical seat is formed on the base member, and a part of the ink receiving member received by the spherical seat is a convex spherical seat having a spherical surface centering on the oscillation center of the laser unit holder. 5. A tilt adjustment attachment for a tripod of the laser marking device according to 5.

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