JP6765637B2 - Tire holder, tire printing device and tire printing method - Google Patents

Description

The present invention relates to a tire holder that holds a tire when printing on a side portion of the tire, and a tire printing device and a tire printing method that use the tire holder.

Conventionally, when manufacturing a tire, printing is performed on the side portion of the tire by using a printing pad of a printing device in order to give various information such as a tire size. Then, at the time of printing, the tire is held by sandwiching both sides of the tire with a pair of rims according to the size of the tire to be printed in order to print at an appropriate position (for example, Patent Document 1). ..

At this time, when printing on tires of different sizes, it is necessary to replace the rim with a rim suitable for the size, hold the tire, and then slide the tire in the radial direction so that the printing pad is lowered to an appropriate printing range. .. These operations not only impose a heavy load on the operator, but also cause printing deviations between lots due to variations in the slide amount, which may lead to a decrease in work efficiency.

Therefore, it has been proposed to hold tires of different sizes using a removable rim or the like and operate the tip (printing head) of the printing pad to suppress a decrease in work efficiency during printing (). For example, Patent Documents 2 and 3).

Japanese Unexamined Patent Publication No. 2013-223930 Japanese Unexamined Patent Publication No. 2012-196929 Japanese Unexamined Patent Publication No. 2013-224055

An object of the present invention is to provide a tire printing technique capable of improving the work efficiency of tire printing while having a simple configuration that does not require expensive equipment costs and a large equipment space.

The invention according to claim 1
A tire holder that holds and rotates the tire in the horizontal direction.
A first holding member attached so as to close the opening of the upper side portion of the tire and a first holding member arranged to face the first holding member and attached so as to close the opening of the lower side portion of the tire. Equipped with 2 holding members
The first and second holding members are each provided with a circular rim portion for holding the opening.
The rim portion is formed in a plurality of stages by providing a first rim portion and a second rim portion having different outer diameters according to the diameter size of the opening in order from the inside in the tire width direction.
The center position of the second rim portion is a tire holder characterized in that the first and second holding members are eccentric with respect to the center position of the first rim portion in the same direction by the same distance.

The invention according to claim 2
The tire holding according to claim 1, wherein the center position of the first rim portion having an outer diameter smaller than that of the second rim portion coincides with the rotation center of the first and second holding members. It is a tool.

The invention according to claim 3
The tire holder according to claim 1 or 2, wherein the amount of eccentricity of the second rim portion is 1 to 20 mm.

The invention according to claim 4
The tire holder according to any one of claims 1 to 3, wherein the heights of the first rim portion and the second rim portion are 2 to 8 mm.

The invention according to claim 5
The tire holder according to any one of claims 1 to 4, wherein the height of the second rim portion of the first holding member is smaller than the height of the first rim portion. ..

The invention according to claim 6
The tire holder according to any one of claims 1 to 5.
A rotating device that rotates the tire holder to transfer the tire to just below the printing position and place it in a predetermined position.
It is a tire printing apparatus characterized in that it is provided with a printing means for printing by lowering a printing pad on a side portion of a mounted tire.

The invention according to claim 7
A tire printing method for printing on a side portion of a tire using the tire printing device according to claim 6.
A tire holding step of holding a tire by the tire holder and
A transfer step of rotating a tire held by the tire holder using the rotating device, transferring the tire to just below the printing position, and placing the tire in a predetermined position.
The tire printing method is characterized in that the printing pad is lowered on a side portion of the mounted tire to provide a printing step for printing on the tire.

According to the present invention, it is possible to provide a tire printing technique capable of improving the work efficiency of tire printing while having a simple configuration that does not require expensive equipment costs and a large equipment space.

It is the schematic which shows the state when the tire is held by the tire holder which concerns on one Embodiment of this invention. It is a side view of the tire holder which concerns on one Embodiment of this invention. It is a partial schematic diagram which shows the state when the tire is held by the tire holder which concerns on one Embodiment of this invention, and is transferred to the direct area under the printing apparatus. FIG. 3 is a schematic view of the rim portion viewed from above. It is a figure explaining the printed part of the tire in one Embodiment of this invention.

Hereinafter, the present invention will be described with reference to the drawings based on the embodiments.

1. 1. Tire holder according to the present embodiment First, the tire holder according to the present embodiment will be described. FIG. 1 is a schematic view showing a state when a tire is held by the tire holder according to the present embodiment. As shown in FIG. 1, the tire holding device 1 includes a tire holder 10 composed of a pair of upper and lower holding members for holding the tire 20, a lower support mechanism 2 for supporting the tire holder 10 from below, and a tire holder 10. The upper support mechanism 3 for supporting the tire from the upper side and the held tire 20 are transferred to just below the printing position of the printing device (not shown) by driving the rotating shaft 3c and placed in a predetermined position. (Not shown).

The tire holder 10 includes a pair of upper and lower holding members, that is, a lower holding member 11 as a first holding member and an upper holding member 15 as a second holding member, and the lower holding member 11 and the upper holding member The tire 20 is held by sandwiching both sides of the tire 20 with 15.

The lower holding member 11 and the upper holding member 15 both have a multi-stage rim portion, and are configured to be able to hold tires of different sizes. A pressurizing device for inflating the held tire 20 into a predetermined shape is connected to the lower support mechanism 2.

FIG. 2 is a side view of the tire holder according to the present embodiment. As shown in FIG. 2, the lower holding member 11 and the upper holding member 15 are arranged to face each other, and a two-stage rim portion 10a is integrally formed on each facing surface side. Specifically, the two-stage rim portion 10a is formed so that the outer diameter of the inner rim is smaller than the outer diameter of the outer rim. That is, the lower holding member 11 is composed of a large-diameter second rim portion 11a and a small-diameter first rim portion 11b. Similarly, the upper holding member 15 has a large-diameter second rim portion 15a and a small diameter. It is composed of the first rim portion 15b of the above.

By providing such a two-stage rim portion 10a, it is possible to hold two types of tires having different sizes.

That is, the upper side of a large-sized tire (for example, a 6-inch tire) is held by an engaging portion 17 composed of an outer peripheral portion 17a and a bottom surface portion 17b of the second rim portion 15a of the upper holding member 15. The lower side is held by the engaging portion 13 including the outer peripheral portion 13a and the bottom surface portion 13b of the second rim portion 11a of the lower holding member 11.

On the other hand, the upper side of a small-sized tire (for example, a 5-inch tire) is held by an engaging portion 16 composed of an outer peripheral portion 16a and a bottom surface portion 16b of the first rim portion 15b of the upper holding member 15. The lower side is held by the engaging portion 12 including the outer peripheral portion 12a and the bottom surface portion 12b of the first rim portion 11b of the lower holding member 11.

The central axis (center position) Oa of the small diameter first rim portions 11b and 15b coincides with the central axis of the tire holder 10. On the other hand, the central axis (center position) Ob of the large-diameter second rim portions 11a and 15a is eccentric so as to deviate in a predetermined direction with respect to the central axis Oa of the first rim portions 11b and 15b. Specifically, at the time of printing, the second rim portions 11a and 15a are eccentric so as to deviate in the direction of the printing machine (X direction).

The amount of eccentricity is appropriately set based on the difference in the size of the tires held by the two-stage rim portion 10a, but is usually preferably 1 mm or more and 20 mm or less, and the above-mentioned 5-inch tire and 6-inch tire are usually used. In the case of, it is preferably 2 mm or more and 10 mm or less.

In the present embodiment, the heights T1 and T3 of the second rim portions 11a and 15a and the heights T2 and T4 of the first rim portions 11b and 15b are equal to each other, and are set in the range of 2 to 8 mm, respectively. It is preferable that it is.

2. Printing device according to the present embodiment Next, the printing device according to the present embodiment will be described.

FIG. 3 is a partial schematic view showing a state when a tire is held by the tire holder according to the present embodiment and transferred directly under the printing apparatus. Further, FIG. 4 is a schematic view of the rim portion in FIG. 3 as viewed from above. In FIG. 3, there is a printing device above the paper surface.

The tires 21 and 22 held by the tire holder are inflated into a predetermined shape as shown in FIG. 1, and then the rotating shaft is rotated by the rotating device, and the side portion is directly below the printing pad 6 of the printing device. Reprinted to be located in. Then, the printing pad 6 is lowered to press the side portion of the tire, so that printing is performed.

At this time, as shown in FIG. 2, since the central axis of the large-diameter second rim portion is eccentric to the printing device side with respect to the central axis of the small-diameter first rim portion (see FIG. 4), the size is large. The tip of the large tire 21 is set so as to go beyond the position of the printing pad 6 and fully penetrate. On the other hand, the tip of the small tire 22 is set closer to the front than the tip of the tire 21. As a result, even if the tires have different sizes, it is possible to print at a predetermined printing location using one tire holder.

3. 3. Tire printing method according to the present embodiment The tire printing method according to the present embodiment is a printing method capable of printing on tires of different sizes without replacing the rim, and is carried out according to the procedure described below. Will be done.

(Procedure 1) Tire Holding Step First, as shown in FIG. 1, the tire 20 to be printed is held sideways on the tire holder 10. Specifically, the tire 20 is placed on the lower holding member 11 and set on the rim suitable for the size, the upper holding member 15 is set from the upper side of the tire 20, and the upper and lower holding members 11 and 15 are used to set the tire. The tire 20 is held by sandwiching the 20 from above and below.

Next, air is supplied to the inside of the tire 20 held by the tire holder 10 to inflate the tire into a predetermined shape.

(Procedure 2) Transfer Step Next, the tire is printed by rotating the tire holder 10 on which the tire is held by a predetermined angle (for example, 180 °) by the arm portion 3b that is rotated by the drive of the rotating device. Transfer to just below the position and place it in place.

At this time, since the central axes of the large-diameter second rim portions 11a and 15a are eccentric to the printing device side with respect to the central axes of the small-diameter first rim portions 11b and 15b, as described above, the tire has a large size. The tip of 21 is set in a state where it goes beyond the position of the print pad 6 and is fully inserted. On the other hand, the tip of the small tire 22 is set closer to the front of the tip of the tire 21, and a predetermined printing portion of each tire is located directly below the printing pad 6.

(Procedure 3) Printing step

Next, the printing pad 6 is lowered and the side portion of the tire is pressed from above to print on the tire. As a result, as shown in FIG. 5, printing can be performed on the appropriate printing locations P1 and P2 for both the small size tire and the large size tire.

When a small tire (5-inch tire) is held, the horizontal height of the side portion to be a printed surface is lower than when a large-sized tire (6-inch tire) is held. Such a difference in the height of the printing surface can be dealt with by, for example, adjusting the stroke amount of the printing pad 6. In addition, the height of the second rim portion is made lower than the height of the first rim portion so that the height difference can be compensated for by the elasticity of the printing pad, and the height of the side portion of the tire using the second rim portion is set. It can also be dealt with by reducing the difference in height between the tire and the side portion of the tire using the first rim portion.

4. Effect of the present embodiment According to the present embodiment, the lower holding member and the upper holding member constituting the tire holder are provided with a second rim portion and a first rim portion having different outer diameters depending on the size. Because of this, tires of different sizes can be held by one tire holder, and the trouble of replacing the rim can be saved.

Further, in the present embodiment, since the large diameter second rim portion is eccentric to the printing device side, even if the tires have different sizes, the tire holding equipment such as the tire holder can be slid. , It is possible to print at an appropriate place without moving the printing pad in the radial direction of the tire.

As a result, it is possible to improve the work efficiency of tire printing while having a simple configuration that does not require expensive equipment costs and a large equipment space.

Hereinafter, the present invention will be described in more detail based on Examples.

1. 1. Experimental Examples 1-7
A tire holder having a small-diameter first rim portion for a tire having a size of 5 inches and a large-diameter second rim portion having a rim portion for a size 6-inch tire was produced. Was used to print on each side of two types of tires of different sizes of 5 inches and 6 inches. At this time, as the tire holder, as shown in Table 1, a two-stage eccentric type similar to the tire holder shown in the above embodiment was used. In these tire holders, the heights of the second rim portion and the first rim portion are equal, and the eccentricity of the second rim portion and the height of the rim portions (second rim portion and first rim portion) are the same. Variously different. The amount of eccentricity is set in the range of 0 to 25 mm, and the height of the rim portion is set in the range of 2 to 20 mm. The print pad is a fixed type that does not operate in the radial direction of the tire.

2. Experimental Example 8 and Experimental Example 9
As shown in Table 1, the tire holder of Experimental Example 8 is a one-stage type having one rim portion. The height of the rim portion is 8 mm, and the printing pad is a fixed type that does not move in the radial direction of the tire. In addition, this Experimental Example 8 corresponds to the conventional example.

Further, the tire holder of Experimental Example 9 is a multi-stage type in which rim portions are formed in a plurality of stages, but none of the rim portions is eccentric. The height of the rim portion is 8 mm, and the printing pad is an operation type that operates in the radial direction of the tire.

3. 3. Evaluation method Print on the sides of 5-inch tires and 6-inch tires, measure the working time, observe the effect of equipment on printing, evaluate work efficiency and equipment effect, and also evaluate printing accuracy. By doing so, the overall evaluation was judged.

The test results are shown in Table 1. The evaluations in Table 1 indicate that the evaluations decrease in the order of ◯ → Δ → ▲ → ×.

From the results shown in Table 1, in Experimental Example 2, Experimental Example 3, and Experimental Example 6 in which a two-stage eccentric rim is used, the amount of eccentricity is in the range of 2 to 10 mm, and the height of the rim portion is in the range of 2 to 8 mm. It can be seen that the evaluations of work efficiency, equipment impact, and printing accuracy were all high as "○", and the overall evaluation was also "○".

On the other hand, in Experimental Example 1 in which the eccentricity amount is 0 mm even though it is a two-stage eccentric type, the evaluation of work efficiency and equipment influence is "○", but the second rim portion and the first rim portion are flush with each other. Due to the formation of dots, air leakage occurred, the tire side surface became unstable, and printing chips occurred. Therefore, the evaluation of printing accuracy was "▲" and the overall evaluation was "Δ".

In addition, in Experimental Examples 4 and 5, which are two-stage eccentric type but have large rim heights of 15 mm and 20 mm, the evaluation of work efficiency and equipment impact was "○", but the pad when using the first rim part. As the stroke amount increased, the quick-drying ink dried and printing chips occurred. Therefore, the evaluations of printing accuracy were "▲" and "△", and the overall evaluations were also "▲" and "△".

Further, in Experimental Example 7, which is a two-stage eccentric type but has a large eccentricity of 25 mm, the tire interferes with the equipment and the evaluation of work efficiency and equipment influence is "x", and printing is not possible, so a comprehensive evaluation is made. Also became "x".

Further, in Experimental Example 8 using a one-stage, non-eccentric rim, the evaluation of work efficiency and equipment influence was "x" because the rim replacement work and the slide work of the tire holding equipment for holding the tire were involved. At the same time, printing misalignment occurred between lots due to variations in the amount of slide when printing by sliding the holding equipment, and the evaluation of printing accuracy was "Δ", and the overall evaluation was "x".

In Experimental Example 9 using a multi-stage, non-eccentric rim, the evaluation of work efficiency and equipment impact was slightly better than in Experimental Example 8 due to the multi-stage type, but it was printed. Since the head is movable, printing misalignment occurs due to variations in the amount of movement of the print head, and the evaluation of printing accuracy is "Δ", and the overall evaluation is also "▲".

From the above, it was confirmed that the work efficiency and printing accuracy are improved by using the two-stage eccentric holding member shown in the present embodiment.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments. Various modifications can be made to the above embodiments within the same and equivalent scope as the present invention.

1 Tire holding device 2 Lower support mechanism 3 Upper support mechanism 3b Arm part 3c Rotating shaft 6 Printing pad 10 Tire holder 10a Rim part 11 Lower holding member 11a, 15a Second rim part 11b, 15b First rim part 12 , 13, 16, 17 Engagement part 12a, 13a, 16a, 17a Outer peripheral part 12b, 13b, 16b, 17b Bottom part 15 Upper holding member 20 Tire 21 Large size tire 22 Small size tire Oa Center of 1st rim part Axis (center position)
Ob 2nd rim central axis (center position)
P1, P2 Printed area T1, T3 Height of the second rim T2, T4 Height of the first rim X Eccentric direction

Claims (7)

A tire holder that holds and rotates the tire in the horizontal direction.
A first holding member attached so as to close the opening of the upper side portion of the tire and a first holding member arranged to face the first holding member and attached so as to close the opening of the lower side portion of the tire. Equipped with 2 holding members
The first and second holding members are each provided with a circular rim portion for holding the opening.
The rim portion is formed in a plurality of stages by providing a first rim portion and a second rim portion having different outer diameters according to the diameter size of the opening in order from the inside in the tire width direction.
A tire holder characterized in that the center position of the second rim portion is eccentric with respect to the center position of the first rim portion by the same distance in the same direction by the first and second holding members. The tire holding according to claim 1, wherein the center position of the first rim portion having an outer diameter smaller than that of the second rim portion coincides with the rotation center of the first and second holding members. Ingredients. The tire holder according to claim 1 or 2, wherein the amount of eccentricity of the second rim portion is 1 to 20 mm. The tire holder according to any one of claims 1 to 3, wherein the height of the first rim portion and the second rim portion is 2 to 8 mm. The tire holder according to any one of claims 1 to 4, wherein the height of the second rim portion of the first holding member is smaller than the height of the first rim portion. The tire holder according to any one of claims 1 to 5.
A rotating device that rotates the tire holder to transfer the tire to just below the printing position and place it in a predetermined position.
A tire printing apparatus characterized in that a printing means for printing by lowering a printing pad is provided on a side portion of the mounted tire. A tire printing method for printing on a side portion of a tire using the tire printing device according to claim 6.
A tire holding step of holding a tire by the tire holder and
A transfer step of rotating a tire held by the tire holder using the rotating device, transferring the tire to just below the printing position, and placing the tire in a predetermined position.
A tire printing method comprising a printing step in which the printing pad is lowered on a side portion of a mounted tire to print on the tire.

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