JPH07294256A - Laser vertical marking apparatus - Google Patents

Abstract

PURPOSE:To ensure the vertical attitude of a lens-barrel body without causing without causing error or fluctuation due to a gimbal mechanism under a side wind by housing the lens-barrel body containing upper and lower projection means in a wind-proof case. CONSTITUTION:A lens-barrel body 14 is equipped with a vertical upper imaging means U comprising a visible semiconductor laser 141, a lens 142for condensing a light emitted therefrom, and a lens 142 for focusing a laser spot image of an upper measuring point at an arbitrary height. The lens-barrel body 14 is also equipped with a vertical lower projection means D comprising a LED 145, and a lens 146 for focusing a spot image onto a vertical lower floor face coaxially with the laser spot. The lens-barrel body 14 containing the means U and D is suspended within a wind-proof case 1 such that it can be oscillated by means of a gimbal mechanism 15. This structure prevents the laser spot image from being disturbed by an unexpected side wind when a marking work is carried out by irradiating laser light directly thus realizing highly accurate indication of vertical axis.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] At the time of construction, such as civil engineering, at the construction site of facilities, the inside of the upper and lower floors (ceiling) where the vertical axis is common to a certain point on a horizontal plane such as the floor. It is an object of the present invention to propose an improved laser beam vertical marking device that can easily detect points and perform marking easily.

[0002]

2. Description of the Related Art In Japanese Utility Model Laid-Open No. 3-60015, a vertical device is provided, which is mounted at the center of an external cylinder of a pendulum by aligning both optical axes of an upper projection optical system and a lower projection optical system on a vertical line. A structure for supporting the upper part of this pendulum outer cylinder on a gantry by a gimbal mechanism is described.
It can also be found in Japanese Utility Model Publication No. Sho 34-34505.

[0003]

[Problems to be Solved by the Invention] During marking for marking using laser light vertical irradiation, the body of the lens barrel, which is supported by a gimbal mechanism on a tripod holder, is shaken by strong winds or the like, which hinders the work. In addition to removing the disadvantages, ensure a smooth and reliable centering of the vertical axis, and also secure and secure the clamp of the lens barrel body in order to prevent misalignment during movement or transportation or installation. SUMMARY OF THE INVENTION It is an object of the present invention to propose a laser light vertical inking device, which is improved with the intention of avoiding a malfunction at the time.

[0004]

SUMMARY OF THE INVENTION The present invention is a visible semiconductor.
Laser 14₁Condensing lens 14 for focusing the emitted light of₂Through
And display by laser spot of upper measuring point of arbitrary height
Imaging lens 14 that controls ₃Vertical upward projection image forming means
U and light emitting diode 14_FiveThe emitted light of the vertical downward on the floor surface
Focusing to form a spot image coaxially with the above laser spot
Lens 14₆With a vertically downward light projecting means D
The cylinder body 14 can be swung by the gimbal mechanism 15.
Laser light vertically supported by a windshield case 1
As an irradiator, cover the lens barrel body 14 at the top of the windbreak case 1.
Opening of the hood 2 with squid cover glass
The imaging lens 14 at the position₃Focus adjustment knob 1
Four_FourIt can be operated and is hooked on the windbreak case 1.
It is a laser light vertical ink maker and a laser light vertical irradiator.
Irradiation light drive circuit 14₇The operation knob 9 of the lens barrel body 14
Restraint clamp that restrains when the gimbal mechanism 15 is not activated
11 is also provided, and the switch is closed by the operation knob 9.
Release the restraint by the restraint clamp 11 on the barrel body 14 only
What to do and lens barrel body 14₉Surface conductor 14 around the bottom of₈
Is provided, and the inner circumference of the windbreak case 1 is buffered by facing it.
A ring-shaped conductor 16 is provided via a cushion 17 to provide both conductors.
The emitted light drive circuit 14₇To shut off
And are more preferable.

The hood with a cover glass is pivotally supported by a horizontal shaft behind it in a windproof case, and is locked by a locking claw at the front end of rotation, as well as a screw cap type or an anchor fitting. It may be a model that can be removed from the windproof case. The gimbal mechanism arranges the pivot bearings on the gimbal ring that is sandwiched between the lens barrel body and the windbreak case on the diameter lines of the lens barrel body and the windbreak case that are orthogonal to each other, and the barrel body is orthogonal to the windbreak case. Two
It is a mechanism that allows it to swing around an axis, and therefore is suspended and held in a vertical posture, and generally has the same principle as a mechanism for keeping the compass of a ship in a horizontal posture at all times. The windproof case has its base fixed to a holding stand with a tripod that can be adjusted up and down, and a leveler that confirms the vertical installation posture is installed on the top of the windproof case.

[0006]

[Operation] The laser light vertical marking device installs the windproof case on the installation surface such as the floor surface or the base surface in a substantially vertical posture with the help of the leveler by adjusting the screw of the tripod. Then, under the operation of the laser light vertical irradiation light drive circuit, first, the spot image formation by the vertically downward light projecting means is matched with a predetermined position. Then, the bonnet is opened, and the laser spot on the ceiling surface is shown by the focus adjusting knob of the image forming lens of the vertically upward projection image forming means, and marking is added thereto. The above procedure is repeated to make the necessary marking markings.However, during this measurement, the body of the lens barrel housing the lower and upper light projecting means is housed in the windproof case, so gimbaling is possible under cross wind. The gimbal mechanism of the lens barrel main body ensures a vertical posture without worrying about the drooping hold or swing of the mechanism, and the pivot bearing of the gimbal mechanism further enhances the vertical posture accuracy. In addition, since the restraint clamp of the lens barrel body is also used as the operation knob of the irradiation light drive circuit of the laser light vertical irradiator, proper floodlight irradiation can be performed when necessary and timely without delusion of the laser spot. It is possible to stop the light emission reliably when the windproof case is inclined at an untimely time.

[0007]

1 to 4, an embodiment of a laser beam vertical inking device according to the present invention is illustrated by the appearance of the front, side, plane and bottom, and FIG. The cross section AA is shown. In the figure, 1 is a windproof case, 2 is a bonnet, 3 is a fixed cover, 4 is a pedestal, 5 is an adjusting screw that acts as a tripod, 6 shown in FIGS. 3 and 6 is a cover glass, and 7 shown in FIG. The exit window, 8 is a leveler. The laser light vertical marking device according to the present invention includes, for example, a pedestal 4 on a floor surface of a hierarchical structure, and a leveler 8 by a tripod adjusting screw 5.
Installation with the help of the windproof case 1, the vertical axis of the windbreak case 1 is vertical.

In this example, the bonnet 2 is rotatably supported around the clevis portion 3'of the fixed cover 3 mounted on the top end of the windbreak case 1 by a horizontal shaft pin 2 ', and at the front end of the bonnet 2. Although the case where the fixed cover 3 is hooked by the hooking claw 2 ″ is shown as an example, the bonnet 2 may be of a screw cap type or another type such as an anchor fitting. The windproof case 1 has its top portion. As shown in FIG. 6, an operation knob 9 that partially protrudes from the side surface is provided so as to be rotatable left and right along the arrow around the vertical support shaft 10, and a lens barrel body 14 to be described later is restrained on the operation knob 9. The spring clamp 11 and the push arm 11 ′ that branches off are provided, and the push arm 11 ′ contacts the movable contact 12 with the fixed contact 13 only at the release position of the spring clamp 11 shown in FIG. Road B, and to connect the outgoing light control circuit A through the terminals 20 and 19 to the internal power supply C. The operation knob 9 is illustrates an example of the tumbler type, but the barrel main body 14
The above operation may be performed by advancing / retreating in the tangential direction or the radial direction.

As shown in FIG. 5, the lens barrel body 14 is a condenser lens 14 for focusing the emitted light of the visible semiconductor laser 14 _1.
The light emitted from the vertically upward projecting image forming unit U and the light emitting diode 14 _{5 including} the image forming lens 14 ₃ which controls the display by the laser spot at the upper measuring point at an arbitrary height via the vertical downward floor surface. A vertical downward light projecting means D composed of a focusing lens 14 _{6 for} forming a spot image coaxially with the laser spot is housed, and the gimbal mechanism 15 can be swung and housed in the windproof case 1 in a hanging manner. In FIG. 5, 14 ₄ is a focus adjustment knob for the laser spot, 14 ₇ is the emitted light control circuit A described above, 14 ₈ is a surface conductor provided by plating or lining on the skirt of the lens barrel body 14, and 16 is the surface Cushion for cushioning shock from contact with conductor 14 ₈
A contact ring having a lining of 7, for example, rubber, cork, and polyacetal resin having a spring property, 18 is a conductive piece, and 21 is a turn-on of the emitted light driving circuit A by closing the movable contact 12 with respect to the fixed contact 13. However, it is an opening / closing circuit B which causes the emitted light driving circuit A to be preferentially turned off by closing the contact ring 16 and the surface conductor 14 ₈ .

The contact between the contact ring 16 and the surface conductor 14 ₈ is caused when the installation posture of the gantry 4 with respect to the vertical axis of the lens barrel body 14 is not constant, that is, when the inclination of the floor surface is about 3 °. In the above, the case where the emission light drive circuit A is short-circuited to extinguish the laser spot has been described. In addition, a capacitance detection method capable of sensing inclination without contact, an optical path blocking method by inclination, etc. are also used. obtain. In FIG. 5, for the gimbal mechanism 15, a pivot shaft composed of a pair of adjusting screws screwed into the windbreak cover 1 is fitted to the pivot bearings located at both ends of the diameter of the ring-shaped intermediate member forming the pivotal part of this mechanism. Although it is possible to swing it back and forth across the plane of the drawing, the ring-shaped intermediate member is screwed into the pivot bearings located at both ends of the lens barrel body 14 in the direction orthogonal to the above diameter. It is necessary to adapt the pivot shaft consisting of a pair of adjusting screws so that it can swing freely around two orthogonal axes, and here the pivot bearing is 3 this hard rolling ball is put in the annular case, A spherical hard trochanter that comes into contact with each rolling ball at three points is housed in the tip of the adjusting screw, or the tip is processed into a cone or a truncated cone, and then heat treatment is applied to the spherical surface. It is desirable to point contact manner.

[0011]

According to the present invention, the disadvantage that the cross wind generated unintentionally causes disturbance of the display of the laser spot during the marking operation by the vertical irradiation of the laser beam is fundamentally solved.
As a result, the operability can be further improved even if the indication of the vertical axis is made more accurate.

[Brief description of drawings]

FIG. 1 is a front view.

FIG. 2 is a side view.

FIG. 3 is a plan view.

FIG. 4 is a bottom view.

FIG. 5 is a sectional view.

FIG. 6 is a cross-sectional view.

FIG. 7 is a connection diagram.

[Explanation of symbols]

1 Windproof Case 2 Bonnet 4 Frame 5 Screw Rod 6 Cover Glass 7 Exit Window 9 Operation Knob 11 Suppressing Clamp 11 'Push Arm 12 Movable Contact 13 Fixed Contact 14 Lens Barrel Body 14 ₁ Visible Semiconductor Laser 14 ₂ Focusing Lens 14 ₃ Imaging Lens 14 ₄ Focus adjustment knob 14 ₅ Light emitting diode 14 ₆ Focusing lens U Vertical upward projection image forming means D Vertical downward image forming means 15 Gimbal mechanism 16 Ring conductor 17 Buffer cushion

Claims (3)

[Claims] _1. An image forming lens 14 ₃ for controlling the display by a laser spot of an upward measuring point of an arbitrary height via a condensing lens 14 ₂ which focuses the emitted light of the visible semiconductor laser 14 _1.
And a vertically upwardly projecting image forming means U and a light emitting diode 1
A gimbal mechanism 15 swings the lens barrel main body 14 containing a vertically downward light projecting means D composed of a focusing lens 14 _{6 for} forming an image of the emitted light of 4 _{5 on} the vertically lower floor surface coaxially with the laser spot. It is a vertical laser light irradiator housed in a windproof case 1 so that it can be moved, and the hood 2 with a cover glass that covers the lens barrel body 14 at the top of the windproof case 1 is used at the opening position. A laser light vertical squeezing device which is capable of operating the focus adjusting knob 14 ₄ of the imaging lens 14 ₃ and hooked on the windproof case 1. 2. The operation knob 9 of the irradiation light drive circuit 14 ₇ of the laser light vertical irradiator according to claim 1, wherein
Is also provided with a restraint clamp 11 for restraining the gimbal mechanism 15 when the gimbal mechanism 15 is not activated, and the restraint clamp 11 for the lens barrel body 14 releases the restraint by the restraint clamp 11 of the lens barrel body 14 only at the closed position of the switch by the operation knob 9. . 3. The ring-shaped conductor 1 according to claim 2, wherein a surface conductor 14 ₈ is provided around the skirt of the lens barrel body 14 ₉ and the surface of the ring-shaped conductor 1 faces the inner surface of the windshield case 1 with a cushion 17 interposed therebetween.
6 is provided, and the emitted light drive circuit 1 is provided by the untimely contact of both conductors.
Laser light vertical marking device that cuts off 4 ₇ .