JP2573641Y2 - Level scale printing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale printing apparatus for printing a scale line on a top surface of a curved level.

[0002]

2. Description of the Related Art Conventionally, printing of a scale line on the top surface of a curved level has been performed by, for example, a method shown in FIG.

First, the radius of curvature R of the glass surface of the level 1
1. A jig 3 having a U-shaped concave groove 2 formed in a curved shape having a radius of curvature R2 substantially equal to 1 and having a width substantially equal to the outer diameter of the level 1 is prepared. I do. A level where an operator should print a scale line in the concave groove 2 of this jig 3.
Then, the top surface 4 of the level 1 is set on the upper surface of the jig 3. Thus, the top surface 4 of the level 1 is the jig
In the state set on the upper surface of 3, a transfer member (not shown) having elasticity is brought into contact with the top surface 4, and further, the transfer member is pushed in, so that the scale line 5 to the top surface 4 of the level 1 is formed. Printing was taking place.

[0004]

[Problem to be solved by the invention] However, the method of printing the scale line 5 on the top surface 4 of the level 1 described above is as follows.
It had the following problems. That is, (1) the top surface 4 by fitting the level 1 to the jig 3
Is set by the operator, and since there is a clearance between the outer diameter of the level 1 and the width of the concave groove 2 of the jig 3, the top surface 4 of the level 1 is attached to the upper surface of the jig 3. Requires the skill of the operator, and the position of the top surface 4 differs depending on the operator. (2) The scale line 5 is printed on the top surface 4 of the level 1 by bringing an elastic transfer body into contact with the top surface 4 and pressing the transfer body. 1 may rotate in the circumferential direction,
In such a case, the scale line 5 is printed at a position shifted from the top surface 4, and the scale line 5 is not stably printed on the top surface 4. (3) As described in (1) and (2) above, the scale line 5 is not printed on the top surface 4 of the level 1 so that the level
There is a possibility that sensitivity accuracy, which is a basic function of 1, is lost.
And so on.

The present invention has been made in view of the above circumstances, and holds a level with the detected top surface as an upper surface, and a scale line is formed on the top surface without rotating the level when printing the scale line. It is an object of the present invention to provide a scale line printing device for a level to be printed.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is an apparatus for printing graduation lines on a top surface of a curved level, which is parallel and spaced apart. A supporting means for rotatably supporting the level in a valley between a pair of rollers attached to a rotating shaft provided; detecting a top surface of the level supported by the supporting means; Detecting means for stopping the detected top surface with the top surface facing upward, and holding the level which has been stopped with the top surface detected by the detecting device as the upper surface between a stopper and a chuck claw so as to be freely releasable. Means.

[0007]

Since the present invention is constructed as described above, the scale is detected by detecting the top surface by the detecting means, stopping the rotation of the level with the detected top surface as the upper face, and holding the level by the holding means. When the line is printed, the level does not rotate in the circumferential direction, the scale line can be printed stably, and the sensitivity accuracy of the level can be guaranteed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic view of a main part of an embodiment of the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b) is a sectional view taken along the line AA, and FIG. -B sectional view, and FIG.
It is -C sectional drawing. In FIG. 1 (b), since the see-through portion is indicated by a dotted line, the cross section is not hatched.

In FIG. 1, reference numeral 11 denotes a chuck device for holding a level 12 having a scale line printed on a top surface thereof. Two pairs of opposed rollers 14 and 14 are provided, and a level 12 is formed between a pair of opposed rollers 14 and 14 through an opening 15 formed on the upper surface of the chuck body 13. It is supported by each valley part. These pairs of rollers 14 and 14 are housed in roller housing holes 16 formed in the chuck body 13 and inserted into shaft housing holes (not shown) formed orthogonal to the roller housing holes 16. The shaft 17 is rotatably supported by two rollers 14, 14 arranged in the longitudinal direction of the level 12, and rotatably supports the level 12.

A level 12 is provided at the right end of the chuck body 13.
A stopper 18 for positioning the right end of the chuck body 13 is attached.
A chuck claw 20 for engaging / holding the left end point of the upper end with U-shaped holes 20a at both upper ends is provided, and the stopper 12 and the chuck claw 20 allow the level 12 to be released freely. Is held.

A guide member 22 is attached to the upper part of the center of the chuck claw 20 so as to engage with a U-shaped groove 21 formed in the chuck body 13 and to be movable left and right. A lever 23 having an L-shaped cross-section is integrally attached to the chuck claw 20 below the position where is attached. lever
A groove 23 is formed on the surface facing the chuck body 13 on the free end side of 23.
a is formed, and a spring 24 is disposed vertically between the groove 23a and the chuck body 13. Due to the vertical elastic force of the spring 24, the chuck claw 20 receives an external force that presses the level 12 against the stopper 18, and holds the level 12 with the stopper 18.

Further, in order to secure the holding of the level 12, the chuck claw 20 has a pair of left and right springs 25, 2.
5 is pressed. The springs 25, 25 are formed by threading the inlet into the chuck body 13 and inserted into holes 26 parallel to the bottom of the chuck body 20 so as to contact the chuck claws 20, and are attached to the springs 25, 25. The pressing force for pressing the chuck claw 20 is adjusted by the adjusting screw 27. That is, the holding force for holding the level 12 is
The level 12 is adjusted with the stopper
It is held by 18 and the chuck claw 20.

The release of the level 12 is released by a spring.
This is performed by pressing down the upper surface side of the lever 23 at the position where the 24 is disposed by the chuck opening / closing member 28. That is, when the upper surface of the lever 23 is pressed down by the chuck opening / closing member 28, the chuck claw 20 integrated with the lever 23 is also rotated in the direction of the arrow with the rotation of the lever 23, and the tip of the level 12 is The engagement with the hole 20a of the chuck pawl 20 holding this is released, and the holding of the level 12 is released.

By the way, the level of the level 12 which is released and held on the roller 14 has its top surface detected for scale printing, but the level 12 is formed in a curved shape. For example, Japanese Patent Laid-Open No.
The measurement is performed using a sensitivity measuring device of a level as disclosed in Japanese Patent Application No. 93608/93. Hereinafter, an outline of the level sensitivity measuring device 30 will be described with reference to FIGS.

As shown in the figure, both ends of the level 12 are fixed on a measuring table 31 and a pair of fixing tables 3 having an L-shaped cross section are fixed.
Placed on 2,32 V-shaped ends,
Further, it is pressed and held by the rotation mechanism 33 from above. The rotation mechanism 33 includes a support member 34 fixed to the measurement table 31, a rotation motor 36 that is rotatably supported on the support member 34 about a fulcrum 35 and rotates the level 12, and a rotation motor Level 12 mounted on the tip of 36 shafts
Roller 3 for rotating the level 12 in contact with the upper surface of
7, and a spring 38 whose one end is attached to the measuring table 31 and the other end is attached to the end of the rotating motor 36, and the rotating roller 37 is brought into contact with the upper surface of the level 12 to rotate the rotating roller 37. Utilizing the own weight of the motor 36 and / or the friction generated when a load is applied by the spring 38, the rotation motor 36
When the is rotated, the level 12 is rotated.

A measuring element 39 having two edges formed at an interval corresponding to the width of a bubble formed inside the level 12 abuts on the upper surface of the level 12. When the probe 12 makes one rotation, the top surface of the level 12 is detected based on the contact angle θ at which the probe 39 contacts the level 12, that is, the rotation angle of the probe 39.

For example, when the level 12 rotates once,
As shown in FIG. 3, the probe 39 in contact with 12 is
The contact posture is changed to →→→, and the contact angle θ with the level 12, that is, the rotation angle of the tracing stylus 39 is detected by a rotation angle detector (not shown) including a rotary encoder or the like, as shown in FIG. Change.

Therefore, the top surface of the level 12, that is, the convex surface is in correct contact with the probe 39, as shown in FIG. 3, ie, the axis of the rotation angle detector reaches the maximum angle when rotated clockwise. It is time. Therefore, an arithmetic control unit (not shown)
Rotates the level 12 with the rotation mechanism 33 while taking in the detection data of the rotation angle detector as an indication value, and when the indication value becomes maximum, that is, when the top surface of the level 12 is located on the upper surface, the rotation mechanism Stop 33. Thus, the setting of the top surface of the level 12 is completed. The symbols in FIGS. 3 and 4 correspond to each other.

The operation of the scale printing apparatus for a level according to one embodiment of the present invention will be described below.

First, in a state where the upper surface of the lever 23 is pushed down by the chuck opening / closing member 28 and the chuck pawl 20 is rotated, a pair of the levelers 12 opposing the level 12 through the respective openings 15 of the chuck body 13. After being placed in the valley formed between the rollers 14 and 14, the rotating roller 37 of the rotating mechanism 33 is moved to one level.
It comes into contact with the upper surface of 12 and presses from above the level 12.

Subsequently, the rotation motor 36 is rotated to rotate the level 12 once by the rotation roller 37, the top surface of the level 12 is detected, and the level is detected based on the detected data.
The level 12 is stopped with the top surface of 12 facing up.

Thus, the detection of the top surface of one level 12 and the stop of the level 12 based on the detection result are completed.
After the detection and the stop of the top surface with respect to the one level 12 are completed, the sensitivity measuring device 30 is moved in parallel, and the rotating roller 37 is moved.
Is in contact with the upper surface of the other level 12 and is pressed from above the level 12. Hereinafter, similarly, the top surface of the other level 12 is detected, and the level 12 is stopped based on the detected data.

When the detection and the stop of the top surface for each level 12 are completed, the depression by the chuck opening / closing member 28 is released, the guide member 22 is moved rightward, and the chuck pawl 20 returns to the position shown in FIG. Let it. Chuck claw 20
Is returned to the position shown in FIG.
a engages and holds the left end of the level 12 and the pressing force of the springs 24 and 25 acts to move the level 12 to the stopper 18.
Press The level 12 is held by the chuck claw 20 and the stopper 18 with the top surface facing upward.

When the top surface of the level 12 is set on the upper surface in this manner, for example, a transfer member having elasticity is brought into contact with the top surface of the level 12, and furthermore, the transfer member is pushed in, thereby making the level higher. A scale line is printed on the top surface of the container 12.

In the above-described embodiment, the number of the level 12 provided in the chuck device 11 is two. However, the present invention is not limited to this, and the level 12 may be appropriately installed according to the device. .

In the above embodiment, the scale line is printed after the top surface of the level 12 is detected. However, the present invention is not limited to this, and the stylus 39 is detected after the top surface of the level 12 is detected.
Alternatively, the scale line may be printed after measuring the sensitivity of the level 12 using a rotation angle detector.

In the above embodiment, the rotation angle detector is a rotary encoder. However, the present invention is not limited to this.
A tilt angle meter, a laser displacement meter, or the like may be used. Further, in the above embodiment, the sensitivity measuring device 30 of the level is moved in parallel to detect the top surface of the level 12 one by one. However, the sensitivity measuring device 30 is installed for each level 12 or By making the chuck device 11 independent for each level 12, the top surface of the level 12 can be more reliably held.

Further, the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[0030]

As described above in detail, according to the scale printing apparatus of the present invention, the top surface is detected by the detecting means, and the rotation of the level is stopped with the detected top surface as the upper surface. By holding by the holding means, the level is prevented from rotating in the circumferential direction during printing of the scale line and the top surface is not displaced, so that the scale line can be printed stably and the sensitivity of the level Accuracy can be guaranteed.

[Brief description of the drawings]

FIG. 1 is a schematic view of a main part of an embodiment of the present invention, wherein FIG. 1A is a plan view, FIG.
(C) is a BB cross-sectional view, and FIG. 1 (d) is a CC cross-sectional view.

FIG. 2 is a diagram schematically illustrating a sensitivity measuring device for a level.

FIG. 3 is a diagram showing a state of contact with a tracing stylus when a level is rotated.

FIG. 4 is a diagram showing a change in a rotation angle of a tracing stylus when a level is rotated.

5 (a) is a front view and FIG. 5 (b) is a side view schematically showing a main part of a conventional scale printing apparatus for a level.

[Explanation of symbols]

 12: Level 14, 14: Roller (supporting means) 18: Stopper (holding means) 20: Chuck claw (holding means) 30: Sensitivity measuring device of level (detecting means)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41F 17/20 B41F 17/14 B41F 17/30 G01C 9/24 G01C 9/34

Claims (1)

(57) [Scope of request for utility model registration] 1. A top surface of a level formed in a curved shape.
For printing graduation lines against
Between a pair of rollers attached to a rotating shaft
Support means for rotatably supporting the level in the valley;
The top surface of the level supported by the supporting means of
Detect and stop with the detected top side up
Detecting means, and the top detected by the detecting means
Stop the level with the surface facing up
Holding means for releasably holding between the hook and the hook
And a scale printing device for a level.