JPS61197174A - Marking head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an automatic marking device.

[Conventional technology]

In general, marking using a solid printing core material such as chalk for marking has traditionally relied on manual labor. Therefore, it is an obstacle to complete automation on the manufacturing line, and automation of the marking work is desired.

[Problem that the invention seeks to solve]

Therefore, the present invention was made to solve the problem of the conventional marking work, and aims to provide a marking method that improves efficiency through automation.

[Means for solving problems]

In order to achieve the above object, in one method of marking according to the present invention, a sliding base capable of three-dimensional movement is used as a mounting base with the aid of a base connected to a moving body, and a vertical A core material holder is slidably supported in the vertical direction on the sliding base in a state tilted by an appropriate angle with respect to the central axis of the direction, and the marking core material can be freely attached and detached inside the core material holder. In addition, the core material is rotated by a rotating means, and the core material is brought into suitable contact with the surface to be marked by a biasing means.

〔Example〕

Hereinafter, a marking method as an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In FIG. 1, a base body 1 is carried by a moving body R that allows movement in an orthogonal coordinate system in the X-axis and Y-axis directions. In FIG. 1, the direction perpendicular to the plane of the paper is defined as the X axis.

A sliding table 2 is connected to the base 1 via a guide rod 4 and is movable vertically in the drawing, and the sliding table 2 is connected to a drive mechanism 3 carried by the base 1 to move up and down. Drive mechanism 3
Hydraulic and pneumatic cylinders, electric actuators, etc. are employed in the form of.

The guide rod 4 is integrally connected to the sliding table 2 at its upper and lower ends, and the guide rod 4 is guided by the guide sleeve 5 of the base 1 to freely slide vertically, so that the sliding table 2 can move up and down. move. In the figure, 6 indicates a dust seal, which prevents dust from entering the fitting surface of the mounting sleeve 5.

Next, reference numeral 7 in FIG. 1 is a holding stand for the marking core material M, which is movable up and down while being tilted at an appropriate angle α about its central axis with respect to the sliding stand 2.

That is, the tilted holding table 7 is fitted into a guide rod 8 whose upper and lower ends are connected to the sliding table 2, so that it can freely slide up and down. The holding base 7 also has a spring member 9 elastically loaded above the guide rod 8.
It is urged so that it is pushed down in a downward direction based on the sliding table 2 by the repulsive force of Jl. In this manner, the marking core material M is in contact with the marking target surface F of the ruled writing body in a state where the holding base 7 is biased downward. Spring member 9
The upper end is prevented from jumping up by the adjusting hole 10.

In addition, the elastic strength can be adjusted.

The contact force applied to the marking core material M is adjusted.

The lower end of the spring member 9 is coupled to the holding base 7 via a spring seat 11. In the figure, reference numeral 12 denotes a guide sleeve of the guide rod 8 fixed to the holding table 7.

Reference numeral 13 denotes a buffer member that cushions the impact of the holding table 7, which is energized by the spring member 9, coming into contact with the sliding table 2 when the sliding table 2 moves upward.

On the other hand, inside the holding stand 7, the holding socket 14 for the marking core material M is rotatably supported via a ball bearing, and the central axis is set at an angle α as described above with respect to the two axes in the vertical direction in one drawing. It is in a tilted state. This holding socket 14 is hollow inside, and the marking core material M is inserted from above, and the corroding core material M is held by the lower chart 22. Also, a gear is formed on the upper outer periphery to connect the drive source. The mechanism is such that the rotational power from the

The upper and lower ends of the holding socket #/ ) 14 are rotatably supported by the holding base 7 via ball bearings 17 and 19.

In the figure, 18 is a fixture for the lower ball bearing 17, and 15 and 1
6 are upper and lower lids of the holding table 7, and 20 and 21 are dust seals for preventing dust from entering into the holding table 7.

Here, the upper end of the chuck 22 of the marking core material M is connected to the core material holding socket 14, and the middle part is slotted (
The marking core material M
It is designed to hold it firmly. The shape of this core material holding portion is appropriately selected depending on the external shape of the marking core material M to be held. Further, this chuck 22 is loosely tightened by pushing up or down the operation fitting 23. The operating fitting 23 is biased downward by a spring member 24, thereby acting to constantly tighten the chuck 22.

Further, reference numeral 25 in FIG. 1 is a guide sleeve that fits around the spring member 24 and is fixed to the core holding socket 14. 26
is a rotation drive source for the marking core material M, which is fixed to the upper lid 15 and is based on an electric or hydraulic or pneumatic actuator system. 27 is a driving gear for rotating the marking core material M, and is connected to the rotational drive source 26. Further, 28 is a ball bearing that allows the drive gear 27 to rotate freely relative to the holding base 7 and the upper lid 15.

[Effect]

The operation and effect of the embodiment device having such a configuration will be described next. First, the marking core material M is inserted from the upper part of the core material holding socket 14 and loaded into the chuck 22. At this time, the tightening by the chuck 22 causes the operation fitting 23 to be applied to the elastic force of the spring member 24. The marking core material M can be set in a predetermined position by pushing it up against the resistance. The sliding table 2 is held at the raised position by the drive mechanism 3 until the marking position with respect to the marking target surface F is set, and at this time the marking core material M is in a position away from the target surface F. The sliding table 2 is lowered by the operation command to start marking, and the marking core material M is placed on the target surface F.
The holding base 7 slides upward relative to the sliding base 2 so as to buffer this contact reaction force, and is in a position where the elastic force of the spring member 9 is balanced, and the marking core material The contact force of M with the target surface F is made appropriate.

Next, the rotary drive source 26 is activated, and the marking core material M
Start the printing operation while rotating the marking core material M.
Each time one character is drawn, the drive mechanism 3 raises the sliding table 2, once leaves the marking core M from the target surface F, and moves the marking core M to the next marking location by the movable body R.

The marking core material M is consumed by being fed by the force of the spring member 9 during the relative movement between the holding base 7 and the sliding base 2 while marking a predetermined number of characters, and is reloaded after the predetermined number of characters have been printed. Ru.

Here, set the marking core material M perpendicularly to the target surface.
When the core material M is loosened, the contact area of the core material M corresponds to its own cross-sectional area, so the contact friction force becomes large, resulting in a large amount of wear and tear, and a large bending moment acts on the core material M itself, causing the risk of breakage. As a means of dealing with this, the core material M is tilted by a predetermined angle α as in the above configuration, and is also rotated to make the wear uniform.

That is, the contact cross-sectional area of the marking core material M according to this embodiment has the shape shown in FIG.

The character shape realized by two-dimensional movement in the X-axis and Y-axis directions is as shown in FIG. Note that the symbol represented by δ indicates the amount of wear of the marking core material M. In each character body, the wire diameter becomes narrower and larger depending on the stroke direction (arrow A in the figure), but this does not pose any practical problem. or,
The shape of the contact cross-sectional area of the marking core M as shown in Fig. 2 can be freely changed by selecting and combining the inclination angle α, the contact force, and the rotation speed, and it is also possible to change the font to a desired one. . Furthermore, since the marking core material M is essentially a consumable item, easy replenishment is an essential condition for automation, and the mechanism of Chartsku 22 is adopted to deal with this. be.

Furthermore, by providing a two-stage sliding mechanism with the sliding table 2 relative to the base 1 and the holding table 7 relative to the sliding table 2, the marking core material M and the target surface can be separated. The following effects can be obtained by adopting a form in which the function of making contact with the contact force and the function of applying contact force are separated. That is, the impact force when the marking core material M makes contact is buffered by the spring member 9, thereby increasing the descending speed of the slide table 2, and by adjusting the elastic strength of the spring member 9, the contact force can be adjusted. ,
It is possible to optimize the amount of core material consumption during printing by setting the temperature balance between both the marking core material M and the target surface, and the elastic force of the spring member 9 even when the marking core material M is consumed. There is no need to reload the marking core material M while it is within a followable range, and the printing operation can be continued as it is, reducing the frequency of loading and saving time.

〔Effect of the invention〕

As can be understood from the above, according to the marking method of the present invention, the core material is applied to the surface to be marked by appropriate contact force and rotation.

By bringing the wire into contact with the wire, changes in the wire diameter due to wear are made uniform, breakage due to weakness is prevented, and delicate marking work that is performed by hand can be efficiently performed.

[Brief explanation of drawings]

Fig. 1 is an overall vertical cross-section of a marking board shown in an embodiment of the present invention, Fig. 2 is a diagram of the operation of the marking core material, which is the main part, and Fig. 3 is a diagram of the characters actually drawn. It is a top view showing an example of an aspect. Explanation of symbols of main parts 2...Sliding stand, 7... Core material holding stand, 9... Spring member. 14...Core material holding socket, 22...Cha-tsuk. 26...Rotary drive source. Patent applicant: Mitsubishi Heavy Industries, Ltd.

Claims (1)

[Claims] a sliding table capable of three-dimensional movement via a base connected to a movable body; A core material holder supported so as to be slidable up and down; a rotating means for rotating the core material loaded inside the holder along an inclined central axis; and a biasing means for biasing the marking head in the direction of bringing the marking head into contact with the marking head.