JPH0552697A - Marking device for tire uniformity machine - Google Patents

Abstract

PURPOSE:To improve marking ratio by pressing a marking pin vertically even when there is a change in the shape of a surface to be marked. CONSTITUTION:A tape installation member 25 having a marking tape and a marking pin 22, is provided on a mounting body 11 that can be freely elevated, while a depression angle adjustment means 35 for adjusting the shaft core of the marking pin 22 into a vertical position to a surface 5A to be marked, is provided on the mounting body 11. The adjustment means 35 and the tape installation member 25 are connected together by a link 43, and are provided on the mounting body 11 while the tape installation member 25 is freely vibrated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device for a tire uniformity machine.

[0002]

2. Description of the Related Art A technique for marking grades or the like on a marked surface (near the bead portion) of a tire based on a tire uniformity measurement result is known, for example, from Japanese Examined Patent Publication No. 53-42163.

[0003]

DISCLOSURE OF THE INVENTION The prior art disclosed in the above publication discloses a drive hammer in which a tape mounting member (marking head) having a winding type marking tape and a marking pin is swingably provided by a pin in the middle. It is provided at one end so as to perform the marker operation by the marking pin and the feeding of the tape by the swing of the driving hammer.

However, the curvature of the mark striking position, that is, the shape of the vicinity of the bead portion is subtly changed depending on the type of the tire. Therefore, in order to accurately and surely perform the mark striking, the marked surface and the axis of the marking pin are required. Despite the fact that it is required to make the heart substantially vertical, there are cases where this requirement cannot be satisfied depending on the tire due to the aforementioned shape change.

Therefore, according to the present invention, even if the surface to be marked changes slightly depending on the type of tire, by adjusting the posture of the axis of the marking pin substantially perpendicularly to the surface to be marked, tires of different sizes can be manufactured. The purpose is to guarantee the marking rate even when measured randomly.

[0006]

According to the present invention, a tire 6 mounted on a tire uniformity machine 1 is provided with a slide 6 which can advance and retreat in the radial direction of the tire 5 to be measured, and the slide 6 is provided with the tire 5
A mounting body 11 that can be raised and lowered is provided, and the mounting body 11 is provided with a tape mounting member 25 having a winding type marking tape 23 and a marking pin 22, and the tape is burned on the marked surface 5A of the tire 5. In order to achieve the above-mentioned object, the following technical measures are taken.

That is, according to the present invention, the mounting body 11 is provided with an angle adjusting means 35 for adjusting the axis of the marking pin 22 to a posture substantially perpendicular to the marked surface 5A.
35, the tape mounting member 25 is connected by a link 43, and the tape mounting member 25 is swingably mounted on the mounting body 11.

[0008]

According to the present invention, the slide 6 is moved in the radial direction according to the size of the tire 5 to be measured. The amount of movement of the slide 6 in this case can be set by the linear potentiometer 10. After adjusting the radial position, attach the mounting body 11 to the rotary actuator 15 and the rack and pinion 17,
Lower via 18 towards tire 5.

In this descending position, the actuator 24 makes the tire 5
Set by touching. Next, marking pin 22
By applying a fluid pressure (air pressure) to the head side of the piston 56, the pin head advances against the return spring 57 and strikes the marked surface 5A, whereby the marking tape 23 is printed. In this case, the actual angle amount is set by the rotary potentiometer 32, and the tape mounting member 25 is swung by the angle adjusting means 35 via the link 43 in a posture in which the pin axis is substantially perpendicular to the marked surface 5A. Adjust by doing.

After the above marking is completed, the tape mounting member 25 is raised via the mounting body 11 and the tape 23 is wound for the next baking.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, tire uniformity machine
Upper frame 2 which is a part of 1 is spindle boss
3, the tire to be measured 5 is mounted via the rim 4 by the upper spindle and the lower spindle (not shown).

A radial linear guide hole 2A is formed in the upper frame 2, and a slide 6 which is movable in the radial direction of the tire 5 is fitted in the hole 2A and is supported by a plate 6A. The drive of 6 is configured by mounting a forward / reverse motor 8 on the lower surface of the upper frame 2 via a bracket 7 and connecting a rod 9 provided on the output side of the motor 8 and positioning in the radial direction is not performed. Made with a linear potentiometer 10.

Therefore, the slide 6 linearly reciprocates (back and forth) on the horizontal plane as indicated by the arrow X in FIG. 1 by the forward / reverse switching of the motor 8.
It is slid and the radial position is set by the potentiometer 10 according to the tire. Reference numeral 6B represents a slide rail. A mounting body 11 is provided on the slide 6 so as to be movable up and down with respect to the tire 5. That is, in the illustrated embodiment, a pair of lift guide rods 12 are provided on the front side of the slide 6, and a boss 14 fixed to the rear side of the mounting body 11 is fitted onto the rods 12 via slide bushes 13. Let
On the other hand, the pinion 17 of the forward / reverse rotary actuator 15 provided on the rear surface side of the slide 6 is attached to the rack 18 provided on the mounting body 11.
1 by the rack and pinion by engaging the
It can be moved up and down as indicated by arrow Y.

The upper limit of the mounting body 11 is detected by a proximity switch 21 provided on the slide 6 via a bracket 20 while a striker 19 is provided on the mounting body 11. On the front side of the mounting body 11, a plurality of marking pins 22 and a take-up reel type marking tape
A tape mounting member 25 having a tire detection actuator 24 and the like 23 is provided so as to be vertically swingable.

The tape mounting member 25 has an arm on the block portion 26.
27 is attached to form a substantially L-shape in a side view, and a pivot 28 is horizontally fixed to the middle of the arm 27 as shown in FIG. 3, and the tip (rear end) of the arm 27 is a forked portion 29. It is said that. A pivot 28 fixed to the arm 27 is rotatably supported by a pair of brackets 30 fixed to the lower front surface of the mounting body 11, and one end of the pivot 28 has a rotary potentiometer for detecting an angle through a coupling 31. 32 is provided, and an angle pointer device 33 is provided at the other end as shown in FIG.

The rotary potentiometer 32 is provided on the bracket 30 via a mount 34 as shown in FIG. On the other hand, an angle adjusting means 35 is provided on the front surface of the mounting body 11 as shown in FIG. 1, and this adjusting means 35 is connected to a motor 36 provided on the upper side and a coupling 37 to this output shaft. And the upper and lower parts are supported by bearings 38 so as to be rotatable around the axis (including screws, etc.) 39
Equipped with a nut on the screw shaft 39 (balls are also available) 40
The link 41 having the nut 40 and the forked portion 29 of the arm 27 of the tape mounting member 25 are connected by a connecting link 43 with a pin 42 or the like.

Therefore, the screw shaft 39 is rotated by the forward and reverse rotation of the motor 36.
When the nut is rotated in the normal direction about this axis, the nut 40 moves up and down by the screw feeding action, so that the tape mounting member 25 is swung about the pivot 28 via the links 41, 43 and the like. Therefore, even if the marked surface 5A changes in shape depending on the type of the tire 5, the potentiometer 32 sets the actual angle of attachment so that the axis of the marking pin 22 is substantially perpendicular to the marked surface 5A.
By adjusting the rotation angle of the motor 36 with this signal, the actual angle of attachment is adjusted within the range indicated by reference numeral θ in FIG.

As shown in FIGS. 2 and 4A, on one side of the block portion 26 of the tape mounting member 25, a take-up reel shaft 44 is provided on one side and a take-up reel shaft 45 is provided on the other side. As shown in FIG. 4A, the reeled marking tape 23 is provided on the take-up reel shaft 45 via the guide member 46, the pinch roller 47 and the friction roller 48 so as to be able to be taken out and taken up.
The take-up reel shaft 45 and the friction roller 48 are driven by a take-up motor 49 and a winding transmission body 50 shown in FIG.

The delivery reel shaft 44 has a flanged pusher 52 biased by a spring 51 as shown in FIG.
Is fitted so as to be slidable in the axial direction, and it is possible to impart a predetermined resistance to the tape 23 loaded between the flange of the reel shaft 44 and the pusher 52. This resistance causes a part of the reel shaft 44 to be screwed. The tape 23, which is an axis and can be adjusted by a knob 53, is horizontally guided by a tape guide 54 below the head 22A of the marking pin 22 as shown in FIG. Has been

In the illustrated example, the three marking pins 22 can be individually heated by the heater 55, and a spring 57 is applied by applying a fluid pressure such as air to the head side of the piston 56. It is said that it is possible to advance against. Further, the tape mounting member 25 is provided with a tire detection actuator 24. The actuator 24 has a detection roller 59 at the tip and a cushioning spring 60. The proximity switch is turned on and off when the roller 59 detects the tire 5.
61 is provided, and a fluid pressure against the spring 57 is applied to the piston 56 of the marking pin 22 by this signal, and a downward stop signal of the tape mounting member 25 is commanded.

[0021]

The present invention is as described above, and when marking is performed on a tire marked surface with a mark pin so as to burn the tape on the basis of the measurement result, even if the shape of the marked surface changes subtly, Pins can be struck by advancing vertically to the marked surface.

[Brief description of drawings]

FIG. 1 is a side elevational view of an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a cross-sectional plan view of the tape mounting member.

FIG. 4 is a front view and a vertical sectional view of FIG.

FIG. 5 is a side view of FIG.

[Explanation of symbols]

 1 Tire uniformity machine 5 Tire to be measured 6 Slide 11 Mounting body 22 Marking pin 23 Marking tape 25 Tape mounting member 35 Angle adjusting means

Claims (1)

[Claims] 1. A tire uniformity machine (1) is equipped with a slide (6) which can be moved forward and backward in a radial direction of a tire (5) to be measured, and the slide (6) can be raised and lowered with respect to the tire (5). A mounting member (11) is provided, and the mounting member (11) is provided with a tape mounting member (25) having a winding type marking tape (23) and a marking pin (22), Marked surface
In what is to be marked by tape burning on (5A), in the mounting body (11), an angle adjustment for adjusting the axis of the marking pin (22) to a substantially vertical posture with respect to the marked surface (5A) Means (35) are provided, and the adjusting means (35) and tape mounting member (25)
A marking device for a tire uniformity machine, characterized in that the tape mounting member (25) is swingably mounted on the mounting body (11) by connecting the above with a link (43).