JPH0378228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a marking device that can mark a processed material such as a steel plate in a desired direction.

<Prior art> When cutting, welding, etc. is performed on a processed material such as a steel plate, markings are generally used to display processing lines, information such as part numbers, processing instruction information, etc. on the processed material. A process called ``is being carried out.

For this marking work, EPM using electronic copying methods and photo marking using enlarged projection using a projector have traditionally been used.

With the recent development of numerical control (hereinafter referred to as "NC") technology, paint is sprayed from a single nozzle,
Line marking methods, in which lines, characters, symbols, etc. are marked by moving this nozzle two-dimensionally, are beginning to become popular.

In addition, in the field of printing technology, nozzle blocks constructed by arranging a large number of nozzles are used, and the nozzles in these nozzle blocks are selected according to marking information to spray paint onto moving paper, cardboard, etc. A dot marking method is also used to form markings such as letters on cans and the like. A marking device employing this dot marking method is generally constructed of a conveyor for moving paper, cardboard, cans, etc., and a nozzle block fixedly arranged along the conveyor.

<Problems to be Solved by the Invention> Among the above-mentioned conventional techniques, EPM or photomarking is now an obsolete technique, and the line marking method using a single nozzle has become mainstream.

However, in the line marking method, the movement of the nozzle is controlled by dividing characters and symbols into line segments for each stroke, and there is a problem in that it takes time to operate.

Further, when marking is performed on a steel plate or the like, the direction of the marking on the steel plate is random. For this reason, if the marking direction is other than the rail installation direction or a direction perpendicular to this direction, it is necessary to control the characters by converting the coordinates for each stroke, making control by NC difficult or Alternatively, there is a problem in that an NC device with advanced functions is required.

An object of the present invention is to provide a marking device that solves the above problems.

<Means for Solving the Problems> In order to solve the above problems, a marking device according to the present invention includes a frame movable along a rail, and a carriage disposed on the frame and movable in a direction orthogonal to the rail. a rotating block disposed on the carriage and capable of rotating; a numerical control means for controlling the movement of the frame and the carriage as well as controlling the rotation of the rotating block; and a plurality of nozzles for spraying paint arranged in a line. The marking block has marking blocks arranged in an array and a control member for controlling the spraying of paint from the marking blocks according to marking information, and the marking blocks are attached to a rotating block.

<Operation> According to the above means, a carriage movable in a direction perpendicular to the rail (hereinafter referred to as the "Y direction") is arranged on a frame that is movable along the rail (hereinafter referred to as the "X direction"). At the same time, a rotating block that can rotate is arranged on this carriage, and a marking block consisting of a plurality of nozzles arranged in a line is attached to the rotating block, and the movement of the frame and the carriage and the rotation of the rotating block are controlled by NC. By controlling the means, the carriage can be moved in a desired direction at a desired speed, and the swing block can be turned at a desired angle.

Therefore, the marking block attached to the turning block can be turned in a desired direction.
Therefore, even if the marking direction is at a predetermined angle with respect to the X and Y directions, predetermined marking can be performed by controlling the movement of the frame and carriage.

<Example> An example of a marking device to which the above means is applied will be described below with reference to the drawings.

FIG. 1 is a perspective view of the marking device, FIG. 2 is a side view of the main parts, FIG. 3 is an illustration of dot marking, and FIG. 4 is an illustration of character strings formed by dot marking.

In the figure, rail 1 has a predetermined interval
It is laid in the direction. The saddle 2 is arranged on a rail 1 and configured to be able to run along the rail 1. A cross beam 3 is disposed on the saddle 2 in a direction orthogonal to the rail 1. The saddle 2 and cross beam 3 constitute a frame.

The saddle 2 is equipped with an NC servo motor (not shown), and this NC servo motor is
The frame is configured to be able to move at a predetermined speed in a predetermined direction by controlling the drive using the device.

A cross rail 4 is fixed to the cross beam 3 along the Y direction, and a marking carriage 5 having a marking block 7 and a cutting carriage 6 having a cutting torch 9 are mounted on the cross rail 4.
are arranged movably. The marking block 7 is attached to a pivot shaft 8 constituting a pivot block provided on the marking carriage 5.

In this embodiment, the marking block 7 and the cutting torch 9 are provided in different carriages, but they can also be provided in the same carriage and used selectively.

Between the rails 1, a processed material 10 such as a steel plate is placed on a cutting surface plate 11.

In addition, in the figure, 12a to 12c are processed materials 10.
12a is a cutting line, 12b is a reference line for joining the cut part to another part by welding or the like, and 12c is a part number.

To specifically explain the configuration of the marking carriage 5, in FIG. 2, 13 is a cross beam,
14 is a cross rail, 15 is a carriage, and 16 is a marking block. The marking block 16 is attached to a pivot shaft 19 via a holding member 18. Further, the turning shaft 19 is connected via a gear box 20 to a turning motor 21 controlled by an NC device. The holding member 1
8, a rotating shaft 19, a gear box 20, and a rotating motor 21 constitute a rotating block.

The marking block 16 is configured to be controlled by a control member (not shown) to form desired characters, symbols, etc. That is, marking information such as characters and symbols is stored in advance in the control member, and when the control member is operated, the nozzles constituting the marking block are selected to spray paint.

In the figure, reference numeral 17 is a hose that connects a paint container (not shown) to the marking block 16 to supply paint to the marking block 16. Reference numeral 22 denotes a lifting block, which is driven by a motor (not shown) to lift and lower the marking block 16, the holding member 18, the rotating shaft 19, the gear box 20, and the rotating motor 21.

The marking block 16 is constructed by arranging a plurality of nozzles (11 in this embodiment) in a line in the X direction.

FIG. 3 is an explanatory diagram of the case where one character is formed by dividing into 10 dots in the direction a (the direction in which the nozzles are arranged) and 7 dots in the direction b (the direction of movement of the marking block 16). In this manner, desired lines or characters can be formed by selectively injecting paint from the nozzles while moving the marking block 16 at a predetermined pitch in a direction perpendicular to the nozzle arrangement.

In the above configuration, for example, when the direction in which markings are formed is in the Y direction, it is sufficient to simply move the marking carriage 15 along the cross race 14 and operate the nozzle block 16.

As shown in FIG. 4, when the marking formation direction is inclined with respect to the X and Y directions, after aligning the origin of the marking block 16 with the position of point P in the figure, the turning motor 21 is driven so that the arrangement direction of the nozzles of the marking block 16 coincides with the direction of the arrow a, and the movement of the saddle 2 in the X direction and the movement of the marking carriage 15 in the Y direction are combined, and the marking block 1
6 in the direction of arrow b. In synchronization with the movement of the marking block 16 in the direction of arrow b, a desired marking 23 can be formed by selectively spraying paint from the nozzles of the block 16 in accordance with the marking information.

In this way, while conventional line marking uses a single nozzle and marks by moving this nozzle in the line segment direction for each stroke of a character or symbol, the dot marking according to the present invention A desired marking can be formed by moving the marking block 16 along the marking direction to be formed. Therefore, it becomes possible to significantly improve the marking speed.
For example, if the dimension of one character in the direction of arrow b is 20 mm and the moving speed of the marking block 16 in the direction of arrow b is 10 m/min, the number of prints per second is 10000 ÷ 20 ÷ 60 = 8.3 (characters) becomes.

This value is approximately 10 times faster than the printing speed in conventional line marking.

<Effects of the Invention> As described in detail above, according to the marking device according to the present invention, a carriage movable in a direction perpendicular to the rail is disposed on a frame movable along the rail, and the carriage is provided with a rotating mechanism. Since a marking block consisting of a plurality of nozzles arranged in a line is attached to the turning block, movement of the frame and carriage and rotation of the turning block can be controlled by NC means. By doing so, the carriage can be moved in a desired direction at a desired speed, and the turning block can be turned at a desired angle.

Therefore, even if the direction in which markings are to be formed on a steel plate or the like is inclined at a predetermined angle with respect to the direction in which the rails are laid, the marking block attached to the turning block can be turned in the desired direction, and the frame and carriage can be rotated. Desired marking can be performed by controlling the movement of.

Therefore, there is no need for coordinate conversion of the marking information depending on the direction in which the marking is formed, and the structure of the marking device can be simplified and the operation can be made easier.

It also has the advantage of being able to increase marking speed compared to conventional line marking methods.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the marking device, FIG. 2 is a side view of the main parts, FIG. 3 is an illustration of dot marking, and FIG. 4 is an illustration of character strings formed by dot marking. 1 is a rail, 2 is a saddle, 4 and 14 are cross rails, 5 and 15 are marking carriages, 6 is a cutting carriage, 7 and 16 are marking blocks,
8 and 19 are pivot axes, 10 is a processed material, 12a is a cutting line, 12b is a reference line, and 12c is a character.

Claims (1)

[Claims] 1. A frame movable along a rail, a carriage disposed on the frame and movable in a direction orthogonal to the rail, a swing block disposed on the carriage and capable of turning, and controlling movement of the frame and carriage. At the same time, a numerical control means for controlling the rotation of the turning block, a marking block configured by arranging a plurality of nozzles in a line for spraying paint, and spraying the paint from the marking block according to marking information are provided. 1. A marking device comprising: a control member for controlling said marking block; and said marking block being attached to a rotating block.