JP6474603B2 - Tire forming former centering confirmation jig - Google Patents

Description

  The present invention relates to a tire forming former centering confirmation jig used for confirming centering of a drum position in an axial direction of a tire forming former.

  Generally, a raw tire of a pneumatic tire is molded by setting a cylindrical tire case in a tire molding former (hereinafter also simply referred to as “former”), attaching a bead, and shaping (for example, patents) Publications 1-3).

  In general, the former shown in FIG. 6 is used as such a former. As shown in FIG. 6, the former A includes a pair of left and right drums A <b> 2-A <b> 2 connected to a molding machine main body A <b> 3 and connected by a main shaft A <b> 1 held horizontally.

  At this time, if centering (centering) in the axial direction of the pair of drums A2-A2 is not accurately performed, the uniformity of the product tire may be deteriorated. Therefore, conventionally, the laser beam L1 is irradiated from the laser irradiation device L perpendicularly to the main axis A1 held horizontally, and whether the laser beam L1 is irradiated to the center position of the pair of drums A2-A2 is determined. By checking, it is inspected whether the centering is accurately performed in the pair of drums A2-A2. Then, whether or not the laser beam L1 at this time is perpendicular to the main axis A1 is confirmed using the downward swing P.

  When the laser beam L1 is not irradiated to the center between the drums A2 and A2, or when the laser beam L1 does not overlap the yarn P1 and is not perpendicular to the main axis A1, the centering is not performed accurately. After adjusting the direction of the laser beam L1 and the position of the pair of drums A2-A2 in the axial direction, it is confirmed whether or not the centering is accurately performed in the same procedure as described above.

JP 2012-236359 A JP 2013-6391 A JP 2002-283471 A

  However, in the above-described method using the laser beam L1 and the downward swing P, it takes time for confirmation of centering and subsequent adjustment work.

  Therefore, an object of the present invention is to provide a technique capable of shortening the time required for checking and adjusting the centering of the tire molding former as compared with the conventional technique.

The invention described in claim 1
A tire forming former centering confirmation jig used for confirming whether or not a laser beam is vertically irradiated at a center position in an axial direction between a pair of drums attached to a main shaft of a tire forming former. ,
A segment in which a center line extending in the vertical direction is formed in the center of the surface;
A pair of holding portions that are attached so as to be slidable at equal lengths on both sides of the segment in the width direction across the center line, and that hold the segment while maintaining the position of the center line. And
When setting between a pair of drums of the tire molding former, the pair of holding portions are slid, and the pair of holding portions are configured to contact side surfaces of the pair of drums ,
The tire forming former centering confirmation jig, wherein the pair of holding portions are urged outward in the width direction by a spring .

The invention described in claim 2
The centering confirmation jig for a tire molding former according to claim 1, wherein the length of the center line is 400 mm or more.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which can shorten the time which confirmation of the centering of a tire shaping | molding former and adjustment work require can be provided compared with the past.

It is a figure which shows the centering confirmation jig | tool of the tire molding former which concerns on one embodiment of this invention, Comprising: (a) is a front view, (b) is a side view. It is a front view which shows typically the confirmation method of the centering performed using the jig for centering confirmation of the tire formation former which concerns on one embodiment of this invention. It is a front view showing typically the state where the jig for centering confirmation of the tire forming former concerning one embodiment of the present invention was set to the main axis. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which compares the centering confirmation jig | tool of two types of tire molding formers concerning embodiment of this invention, Comprising: (a) is a figure which shows the centering confirmation jig | tool with a short centerline, (b) is It is a figure which shows the jig | tool for centering confirmation with a long centerline. It is a figure which shows a state when irradiating a laser beam using the jig | tool for a centering confirmation of two types of tire molding formers shown in FIG. It is a figure which illustrates the confirmation and adjustment of the conventional centering typically. It is a figure which expands partially and confirms conventional centering confirmation and adjustment typically.

1. Prior art and problems thereof Prior to the description of the embodiments of the present invention, confirmation of centering using the conventional laser beam L1 and a downward swing, and the procedure and problems of subsequent adjustment work will be specifically described. To do.

(1) Specific Contents of Conventional Centering Confirmation and Adjustment Work In the conventional centering confirmation work, as shown in FIG. 6, first, a pair of laser irradiation devices L provided on the frame B above the former A are paired. The laser beam L1 is irradiated toward the main axis A1 between the drums A2 and A2, and it is confirmed whether the laser beam L1 is applied to the center position of the pair of drums A2-A2, and the orbit of the laser beam L1 Then, the yarn P1 suspended vertically from the swinging swing P is compared, and it is confirmed whether the laser beam L1 is irradiated perpendicularly to the horizontal main axis A1.

  At this time, when the laser beam L1 is irradiated to the center between the drums A2 and A2 so as to overlap the yarn P1, the laser beam L1 is perpendicular to the main axis A1 and the drum A2 is correctly centered. It is determined that it is present and the confirmation ends.

  On the other hand, when the laser beam L1 is not irradiated to the center between the drums A2 and A2 or when the laser beam L1 does not overlap the yarn P1 and is not perpendicular to the main axis A1, the position of the drum A2 to A2 is shifted. Or the laser irradiation apparatus L is deviated and is not correctly centered, and adjustment work is performed according to the following procedure.

  First, the direction of the laser irradiation device L is adjusted so that the laser beam L1 overlaps the yarn P1 of the swinging swing P, so that the laser beam L1 is perpendicular to the main axis A1. Next, as shown in FIG. 7, the scale D is applied to a pair of drums A2-A2, the main shaft A1 is moved in the axial direction while confirming the positions of the drums A2-A2, and the irradiation position of the laser light L1 is set to the drum. Adjust so that it is the center between A2 and A2.

  Thereafter, in order to confirm that the centering is properly performed, it is determined whether or not the laser beam L1 is irradiated perpendicularly to the main axis A1 between the drums A2 and A2 using the yarn P1 of the downward swing P. Check again. As a result of the confirmation, if the laser beam L1 is irradiated vertically, the adjustment operation is completed. If not, the adjustment operation described above is repeated. Thereby, it can be confirmed that the center positions of the pair of drums are correctly adjusted.

(2) Problems in conventional centering confirmation and adjustment work In the case of conventional confirmation and adjustment work using such laser light and a downward swing, in order to perform centering of a pair of drums with high accuracy, laser light is used. However, it is necessary to repeat the confirmation by the downward swing and the subsequent adjustments many times until it is irradiated perpendicularly to the main axis at the center between the drums, which takes a lot of time.

  And when confirming the direction of the laser beam using a thread that swings down, it takes time to adjust the drooping position of the thread to the irradiation position of the laser beam because the laser and the thread are difficult to see, and it takes time. A waiting time is required to stabilize the yarn runout after adjusting the hanging position.

  Thus, the confirmation using the conventional downward swing and the subsequent adjustment work took a lot of work time in various processes.

2. The centering confirmation jig of the tire molding former according to the present embodiment As a result of repeated examination of the centering confirmation jig that replaces the above-described downward swing, the inventor has applied the centering confirmation jig according to the present embodiment to the centering confirmation jig. As a result, the present invention has been completed.

  In other words, the centering confirmation jig according to the present invention can slide with a segment having a center line extending in the vertical direction at the center of the surface and with a uniform length on both sides of the segment across the center line. And a pair of holding portions that hold the segment while maintaining the position of the center line. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1A and 1B are views showing a centering confirmation jig according to the present embodiment, wherein FIG. 1A is a front view and FIG. 1B is a side view. FIG. 2 is a front view schematically showing a centering confirmation method performed using the centering confirmation jig according to the present embodiment, and FIG. 3 is a schematic view of the centering confirmation jig according to the present embodiment. It is a front view which shows typically the state set to.

  As shown in FIG. 1A, the centering confirmation jig 1 according to the present embodiment includes a rectangular plate-like segment 3, and the segment 3 has a segment 3 at the center in the width direction. A center line 2 extending along the vertical direction is formed by a marking process.

  In addition, a pair of holding bodies 4 that hold the segment 3 are attached to both sides of the segment 3 in the width direction with the center line 2 interposed therebetween. Each holding body 4 is attached so as to be slidable in the width direction along a lateral guide 5 formed in the segment 3.

  Each holding body 4 is connected to a vertical sliding body 8 via a link 9, and when the holding body 4 slides in the width direction, the vertical sliding body 8 slides in the vertical direction along the vertical guide 7. It is configured as follows. Thereby, since the sliding amount of the right and left holding bodies 4 can always be made equal to each other, even if the holding body 4 is slid in the width direction according to the interval between the drums A2-A2 (see FIG. 2), The line 2 does not deviate from the center of the drum A2-A2.

  In the centering confirmation jig 1 according to the present embodiment, the springs 11 that urge the pair of holding bodies 4 in the directions away from each other are provided between the pair of holding bodies 4. Thereby, when the jig 1 for centering confirmation is set between a pair of drums, the holding body 4 is slid by the spring 11 according to the interval between the drums, and the center line 2 is kept at the center of the drum A2-A2. Can do.

  Further, as shown in FIG. 1B, an attachment portion 12 for attaching the centering confirmation jig 1 to the former spindle A1 is provided on the back surface of the segment 3. The mounting portion 12 includes a mounting body 12a having a U-shaped cross section into which the main shaft A1 is fitted, and a screw body 12b for fixing the mounting body 12a to the main shaft A1.

3. Centering confirmation and adjustment work using the centering confirmation jig according to the present embodiment Next, centering confirmation using the centering confirmation jig described above and the subsequent adjustment work will be described. As in the prior art, in this embodiment, the inclination of the main shaft A1 of the former A is previously adjusted to be horizontal, and a pair of drums A2-A2 is matched to the size of the green tire to be molded. The interval has been adjusted.

(1) Setting Centering Confirmation Jig First, as shown in FIG. 3, the above-described centering confirmation jig 1 is set on the main shaft A1 between the drums A2-A2 of the former A.

  Specifically, the operator presses the pair of holding bodies 4 inward with a hand and brings the mounting body 12a (see FIG. 1B) to the spindle A1 in a state where the pair of holding bodies 4 are brought close to each other. After the fitting, the pressure on the holding body 4 is released, and each holding body 4 is slid outward by the spring 11 to contact the side surface of the drum A2-A2. Thus, the center line 2 of the centering confirmation jig 1 is arranged perpendicular to the main axis A1 at the center of the drum A2-A2. In this state, the screw body 12b (see FIG. 1B) of the mounting portion 12 is tightened to fix the centering confirmation jig 1 to the spindle A1.

(2) Confirmation of Centering Next, as shown in FIG. 2, the laser beam L1 is irradiated from the laser irradiation device L attached to the frame B above the former A. At this time, when the laser beam L1 is irradiated so as to overlap the center line 2 of the centering confirmation jig 1, the laser beam L1 is irradiated perpendicularly to the main axis A1 at the center between the drums A2 and A2. Therefore, it is determined that there is no displacement in the drum A2-A2, and the centering confirmation is finished.

(3) Adjustment work On the other hand, when the laser beam L1 is not irradiated with the center line 2 of the centering confirmation jig 1, the drum A2-A2 is displaced, or the laser beam L1 It is determined that the direction is inclined, and the adjustment work of the drum A2-A2 position and the adjustment work of the direction of the laser beam L1 are performed.

  Thus, in this embodiment, the axial position of the drum A2-A2 and the direction of the laser light L1 can be adjusted while constantly checking the laser light L1 and the center line 2. This makes it possible to adjust the centering of the drum with high accuracy.

  As a result, according to the present embodiment, the confirmation and adjustment operations of the centering of the drum A2-A2 are performed in a short time and easily without repeating the confirmation and adjustment as in the case of using the conventional downward swing. be able to.

  Further, in the present embodiment, when the centering confirmation jig 1 is set, the pair of holding bodies 4 are separated from each other and brought into contact with the side surfaces of the drums A2-A2, and therefore, with respect to the spindle A1. The vertical center line 2 can be stably arranged at the center of the drum A2-A2, and after adjusting the hanging time and the working time for adjusting the hanging position of the swinging yarn as in the prior art No waiting time is required to stabilize the yarn runout.

  Further, when using a downward swing yarn as in the prior art, it is difficult to visually check the laser light when the laser beam overlaps with the downward swing yarn. Since the center line formed by the above and the laser beam can be easily compared, the working efficiency can be improved.

  Further, as described above, the centering confirmation jig 1 according to the present embodiment is simply set between the drums A2 and A2 of the former A while the operator presses the holding body 4 inward. Since the center line 2 of the centering confirmation jig 1 can be arranged perpendicular to the center of the drum A2-A2, there is no need to use a tool such as a ruler.

  As described above, since the centering confirmation jig according to the present embodiment can shorten the working time in various processes as compared with the case of using the conventional swinging down, The work time required for adjustment can be greatly reduced. The inventor confirmed that by using the centering confirmation jig according to the present embodiment, the confirmation of the centering of the drum and the subsequent adjustment work can be completed in about 2/3 of the conventional work time. ing.

  In addition, from the viewpoint of facilitating visual comparison between the laser beam L1 and the center line 2, the length of the center line 2 of the centering confirmation jig 1 is preferably 400 mm or more.

  For example, when the centering confirmation jig 1 having a short center line 2 as shown in FIG. 4A is used, as shown in FIG. 5A, the laser beam L1 is slightly inclined. Further, it becomes difficult to visually confirm the deviation between the laser beam L1 and the center line 2, and the working efficiency may be reduced.

  On the other hand, as shown in FIG. 4B, by using the centering confirmation jig 1 having a long center line 2 as shown in FIG. Even in the case of inclination, since the deviation between the laser beam L1 and the center line 2 can be easily confirmed, the working efficiency can be further improved.

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

DESCRIPTION OF SYMBOLS 1 Centering confirmation jig | tool 2 Centerline 3 Segment 4 Holding body 5 Horizontal guide 7 Vertical guide 8 Vertical slide body 9 Link 11 Spring 12 Mounting part 12a Mounting body 12b Screw body A Former A1 Main shaft A2 Drum A3 Molding machine body B Frame D Ruler L Laser irradiation device L1 Laser light P Lower swing P1 Thread

Claims (2)

A tire forming former centering confirmation jig used for confirming whether or not a laser beam is vertically irradiated at a center position in an axial direction between a pair of drums attached to a main shaft of a tire forming former. ,
A segment in which a center line extending in the vertical direction is formed in the center of the surface;
A pair of holding portions that are attached so as to be slidable at equal lengths on both sides of the segment in the width direction across the center line, and that hold the segment while maintaining the position of the center line. And
When setting between a pair of drums of the tire molding former, the pair of holding portions are slid, and the pair of holding portions are configured to contact side surfaces of the pair of drums ,
The tire forming former centering confirmation jig, wherein the pair of holding portions are urged toward the outside in the width direction by a spring . The centering confirmation jig for a tire molding former according to claim 1, wherein the length of the center line is 400 mm or more.

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