JPH074960A - Level marking device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a level marking device capable of marking a wall surface with high accuracy regardless of the unevenness or inclination of the floor surface to be installed. [Structure] A vertically movable lifting device (3) equipped with a laser receiver (8) for receiving light from a laser emitter at a constant height, and held vertically to the lifting device. And a traveling device (4), which constitute a cross-shaped structure, and the traveling device has a black ink jet nozzle (5) which is guided horizontally along the traveling device. A horizontal tilting device (19, 20, 21, 22) that rotates the cross structure in a plane parallel to the wall surface according to the output of the tilting device (27) of the running device in order to keep the running device horizontal. In order to keep the cross-shaped structure vertical, the vertical tilting device (20 , 23,24,25,26) are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a level marking device which can easily carry out horizontal marking as a reference for finishing and other works when constructing a building.

[0002]

2. Description of the Related Art This type of level marking device is disclosed in Japanese Patent Laid-Open No.
It is known from JP-A-216513. This level marking device is basically a vertical supporting member, an elevating device which is vertically movable with respect to the supporting member, and has a laser receiver, and is arranged so as to be orthogonal to the elevating device horizontally. And a black ink jet nozzle guided horizontally so as to be movable along the traveling device. At the top of the lifting device is a laser receiver that receives a laser from a laser emitter that is illuminated while rotating in a horizontal plane at a constant height.

When marking out a horizontal reference line of a certain height on the wall surface during construction, the traveling device is arranged parallel to the wall surface and the black ink jet nozzle is adjacent to the wall surface. In order to set the black jet nozzle to a predetermined height, the laser receiver receives the laser of the reference height from the laser emitter rotating in the horizontal plane at the installed height, and calculated based on this received light. The black spray nozzle is positioned at a predetermined height by raising the lifting device by the height adjustment amount. When the traveling device is adjusted horizontally, the traveling device motor is operated based on the measurement value of the inclinometer attached to the traveling device to rotate the traveling device with respect to the elevating device. Then, black ink can be ejected by ejecting black ink from the black ink ejecting nozzle while moving the black ink ejecting nozzle along the traveling device. In this way, one worker can perform horizontal marking.

[0004]

However, since such leveling out is performed by placing the level marking out device on the floor surface, the floor marking on which the level marking out device is located is uneven or inclined in the front-back direction toward the wall surface. If there is, the elevating device will be inclined with respect to the wall surface, so that the black ink ejected from the black ink ejection nozzle reaches a position displaced from a predetermined height, thus deteriorating the accuracy of the black ink ejection.

It is an object of the present invention to provide a level marking out device which can always carry out marking with high precision at a predetermined position on the object surface regardless of the unevenness or inclination of the floor surface.

[0006]

In order to achieve the above object, a level marking device according to the present invention is installed in a traveling device, in order to keep the traveling device horizontal, an inclination for sensing the horizontal inclination of the traveling device. According to the output of the meter, a horizontal tilting device for rotating a cross-shaped structure consisting of a supporting member, a traveling device, and a lifting device in a plane parallel to the object surface is provided, and the cross-shaped structure is A vertical tilt for rotating the cross structure in a vertical plane orthogonal to the object plane according to the output of another inclinometer installed on the traveling device for keeping the vertical, which senses the tilt in the nozzle direction. And a device.

Further, it is convenient to install the black ink jet nozzle so as to be inclined rearward with respect to the traveling direction of the traveling device, and at that time, set the angle between the nozzle direction and the object surface to 30 ° or less for the reason described later. Is.

[0008]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

The level marking out device according to the present invention is mounted on the carriage 1 so as to be movable to the wall surface to be marked out. The level marking device includes a vertical support member 2,
An elevating device 3 guided by the support member 2 so as to be movable in the vertical direction, a traveling device 4 held so as to be orthogonal to the elevating device 3 horizontally, and movable in the horizontal direction along the traveling device 4. And the black ink jet nozzle 5 guided to the. The supporting member 2, the lifting device 3, and the traveling device 4 form a cross-shaped structure. In addition, stoppers 4a, which abut against the wall surface when marking is performed, are provided at both longitudinal ends of the traveling device 4.

A lifting servomotor 6 is attached to the support member 2, and the lifting device 3 can be lifted and lowered by rotating a screw rod 7 screwed to the lifting device 3. A laser receiver 8 is attached to the top of the lifting device 3. The servomotor 6 is operated by a control box 9 mounted on the carriage 1.

The traveling device 4 has a traveling guide 10 therein, and a cursor 11 is movably attached to the traveling guide 10. The black ink jet nozzle 5 is attached to the front surface of the cursor 11. Both ends of a belt 15 are fixed to the cursor 11, and the belt 15 is stretched around four pulleys 16 provided at both ends of the traveling device 4 in the longitudinal direction. Further, the belt 15 is hung on the pulley 18 of the traveling device servomotor 17 in the middle thereof.

According to the present invention, in order to keep the traveling device 4 horizontal, a horizontal inclination for rotating the cross-shaped structure composed of the support member 2, the lifting device 3 and the traveling device 4 in a plane parallel to the wall surface. Provide a device. This horizontal tilting device has a frame 20, and a supporting member 2 which is a part of a cross-shaped structure is rotatably supported by a horizontal tilting shaft 19 on this frame. Further, the horizontal inclining device has a screw rod 21 screwed to the lower end of the support member 2 and a servomotor 22 connected to the screw rod and attached to the frame 20.

Further, according to the present invention, a vertical tilting device for rotating the cross structure in a vertical plane orthogonal to the wall surface is provided in order to keep the nozzle horizontal. This vertical tilting device is pivotally attached at one end to a servomotor 23 mounted on a bracket 31 installed on the carriage 1 and a pulley 24 of this servomotor and at the other end to the frame 20.
The link 25 is pivotally attached to the carriage 25 and a vertical tilt shaft 26 that rotatably supports the lower end of the frame 20 on the carriage 1.

On the lower surface of the traveling device 4, there is provided an inclinometer 27 for detecting the horizontal inclination of the traveling device 4 at the time of marking.
An inclinometer 28 for detecting the inclination of the nozzle ejection direction is attached.

When a horizontal reference line having a constant height is marked on a wall surface under construction using the level marking device thus constructed, the carriage 1 is moved to a position near the wall surface. As shown in FIG. 2, the stopper 4a is brought into contact with the wall surface to dispose the traveling device 4 in parallel with the wall surface.
Adjacent to the wall. First, in order to make the traveling device 4 horizontal by the horizontal inclining device, the control box 9 calculates a correction amount by the output signal of the inclinometer 27 to operate the servomotor 22 to make the cross structure parallel to the wall surface. Rotate by a correction amount about the horizontal tilt axis 19 in the plane. Next, in order to make the nozzle direction of the black ink jet nozzle 5 horizontal by the vertical inclining device, the control box 9 is output by the output signal of the inclinometer 28.
Calculates the correction amount and operates the servo motor 23 to correct the cross-shaped structure supported by the frame 20 via the pulley 24 and the link 25 in the vertical plane orthogonal to the wall surface with the vertical tilt axis 26 as the center. Just rotate.

After the cross-shaped structure is vertically corrected in this way, in order to make the black ink jet nozzle 5 have a predetermined height,
When the servomotor 6 is operated to raise the elevating device 3, the laser receiver 8 receives light from the rotating laser emitter 30 installed at the reference height in advance, and the received laser height is used as a reference. The control box 9 calculates the amount of movement to the position where marking is performed, and the traveling device 4 is operated by that amount of movement.
Is moved up and down to position the black ink jet nozzle 5 at a predetermined height. Then, when the servomotor 17 is operated, the movement of the belt 15 causes the cursor 11 to move along the traveling guide 10 of the traveling device 4, so that the cursor 1
Black ink is ejected while the black ink jet nozzle 5 supported by the nozzle 1 moves to discharge black ink.

In this case, there are various types of wall surface to be marked out, such as plasterboard, mortar, lightweight concrete plate, iron plywood, concrete molded with veneer, etc. The surface has a lot of irregularities, and India ink easily bleeds. However, in the present invention, as shown in FIG. 3 when viewed from above, a long elliptical shape is obtained by inclining the black ink jet nozzle 5 backward with respect to the traveling direction and jetting black ink at an angle of 30 ° or less with respect to the wall surface. The dots can be overlapped to reduce the amount of India ink per unit length, and as a result, bleeding and dripping of the India ink can be prevented and the accuracy of black ink can be improved.

[0018]

As described above, according to the level marking device of the present invention, even if there is unevenness or inclination on the floor on which the level marking device is placed, it is corrected by the horizontal tilting device and the vertical tilting device. Therefore, it is possible to mark the wall surface with high accuracy.

Further, when the black ink is discharged, the black ink jet nozzle is installed so as to be inclined rearward with respect to the traveling direction, and the black ink is jetted by setting the angle between the nozzle direction and the wall surface to 30 ° or less. It is possible to prevent bleeding and dripping of ink so that the accuracy of ink extraction can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a level marking device according to the present invention.

FIG. 2 is a side view showing a state in which the level marking device of FIG. 1 is positioned so as to be adjacent to a wall surface.

FIG. 3 is an explanatory view showing a jet direction of a particularly preferable black jet nozzle of the level marking device according to the present invention.

[Explanation of symbols]

 2 Support members 3 Lifting device 4 Traveling device 5 Black jet nozzle 8 Laser receiver 19, 20, 21, 22 Horizontal tilting device 20, 23, 24, 25, 26 Vertical tilting device 27, 28 Inclinometer 30 Laser light emitting device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsuhiko Karai 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd. (72) Inventor Ryoji Yoshitake 4-6-15 Sendagaya, Shibuya-ku, Tokyo Shares Formula company Fujita (72) Inventor Shinichi Saito 2-3-10 Sanno, Ota-ku, Tokyo Mark Tech Co., Ltd. (72) Inventor Yukio Hirasawa 4-17-35 Omorinishi, Ota-ku, Tokyo Marktech Co., Ltd. In-house (72) Inventor Akihiro Koyama 4-17-35, Omorinishi, Ota-ku, Tokyo Within Marktec Co., Ltd.

Claims (2)

[Claims] 1. A level marking device provided with a laser receiver for receiving light of a laser emitter which is irradiated while rotating in a horizontal plane at a constant height, comprising a vertical support member and a vertical support member. On the other hand, an elevating shaft that is vertically movably guided and has a laser receiver, a traveling device that is held so as to be orthogonal to the elevating shaft horizontally, and a horizontally movable guide along the traveling device. In a level marking device having a black ink jet nozzle, in order to keep the traveling device horizontal, a support member, a traveling device, and a lifting device are installed in accordance with the output of an inclinometer installed in the traveling device to sense the horizontal inclination of the traveling device. A horizontal tilting device for rotating the cross-shaped structure composed of the device in a plane parallel to the object surface is provided, and in order to keep the cross-shaped structure vertical, A vertical tilting device for rotating the cross-shaped structure in a vertical plane orthogonal to the object plane according to the output of another tiltmeter that senses tilt in the slip direction. apparatus. 2. The black ink jet nozzle is installed so as to be inclined rearward with respect to the traveling direction of the traveling device, and at that time, the angle between the nozzle direction and the object surface is set to 30 ° or less. Level 1 marking device.