Cord material application device

Abstract

To provide a sticking device capable of suppressing stagger and wear of a pressing roller which are generating when a cord material is connected.SOLUTION: There is provided a sticking device for a cord material. The sticking device comprises: a support tool having a support surface 2s for placing the cord material; a supply tool for supplying a first cord material 100A and a second cord material 100B so as to partially overlap the first cord material 100A in a width direction; and a pressing roller 4 for pressing a second region K2 of the second code material 100B in which a first region K1 that is a region of a first distance in the width direction is excluded from a long side edge 101A overlying the first cord material 100A of the second cord material 100B, onto a side of the support surface 2s.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to an apparatus for applying cord material. [Background technology]

[0002] The following Patent Document 1 describes an apparatus for joining multiple rectangular pieces of material to form a long material. The material pieces are an array of multiple cords covered with a topping rubber. The long material is formed by overlapping the rear end of the material piece with the front end of the next material piece supplied by a supply unit, and this process is repeated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-1861 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the material pieces including the cord may develop curled deformation at the tip where the long side edge and the short side edge meet at an acute angle. If such a deformed material piece is joined using, for example, a pressure roller, the deformation may pierce the pressure roller, causing interference, and the joint may become misaligned at the tip (hereinafter, such misalignment may be referred to as "stagger") or the pressure roller may wear out early.

[0005] The present disclosure has been devised in consideration of the above-described situation, and has as its main object to provide a cord material application device that can suppress the staggering that occurs when connecting cord material and wear on the pressure roller. [Means for solving the problem]

[0006] The present disclosure relates to a cord material application device for manufacturing a long sheet-like member by connecting a plurality of cord materials, including a first cord material and a second cord material, wherein the cord material has a parallelogram shape including a pair of long side edges extending in the longitudinal direction and a pair of short side edges extending diagonally with respect to the width direction of the cord material between the pair of long side edges, and the application device includes a support having a support surface for placing the cord material, a supply device for supplying the first cord material and the second cord material onto the support surface so as to partially overlap the first cord material in the width direction, and a pressing roller for pressing a second region of the second cord material, excluding a first region that is a first distance in the width direction from the long side edge of the second cord material on the first cord material, towards the support surface. Effect of the Invention

[0007] By adopting the above-described configuration, the cord material application device of the present disclosure can suppress wear of the stagger and pressure roller that occurs when joining the cord material. [Brief description of the drawings]

[0008] [Figure 1] 1 is a plan view conceptually illustrating an embodiment of a bonding device according to the present disclosure. [Diagram 2] FIG. 2 is a plan view of the cord material. [Diagram 3] 10 is a flowchart showing a pasting method. [Figure 4] FIG. 2 is a perspective view conceptually showing first to third steps. [Diagram 5] 1A to 1C are end views conceptually showing first to third steps. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, one embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 is a plan view conceptually showing an application device (hereinafter, sometimes simply referred to as "device") 1 of this embodiment. The device 1 is for connecting a plurality of cord materials 100 to manufacture a long sheet-like member 200. The sheet-like member 200 is suitably used for tire components such as a belt layer or carcass of a pneumatic tire (not shown), or a breaker layer. Note that the sheet-like member 200 manufactured by the device 1 of the present disclosure is not limited to being used as a tire component.

[0010] Fig. 2 is a plan view of the cord material 100. As shown in Fig. 2, in this embodiment, the cord material 100 is formed by covering a plurality of cords 100a with unvulcanized topping rubber 100b. A metal material such as steel is used as the material of the cords 100a.

[0011] The cord material 100 is formed, for example, in a rectangular shape. In this embodiment, the cord material 100 is formed in a parallelogram shape including a pair of long side edges 101 extending in the longitudinal direction and a pair of short side edges 102 extending obliquely with respect to the width direction of the cord material 100 between the pair of long side edges 101. As a result, the cord material 100 has a pair of pointed portions 103 where the long side edges 101 and the short side edges 102 intersect at an acute angle, and a pair of obtuse angle portions 104 where the long side edges 101 and the short side edges 102 intersect at an obtuse angle. Such a cord material 100 is manufactured by a well-known method. In this specification, unless otherwise specified, the "width direction" is a direction perpendicular to the long side edges 101.

[0012] Although not particularly limited, the cord material 100 desirably has a width W1 of 30 to 34 mm, a length L1 of 100 to 1000 mm, and a thickness T1 (shown in FIG. 5) of 0.9 to 1.1 mm.

[0013] 1, the device 1 includes a support 2 having a support surface 2s, a supply 3 for supplying a cord material 100 onto the support surface 2s, and a pressure roller 4 for pressing the cord material 100 against the support surface 2s. The device 1 further includes a control 5 for controlling, for example, the position of the pressure roller 4.

[0014] The support tool 2 is formed with a known structure capable of moving the support surface 2s in a first direction f1. The support tool 2 is, for example, a known belt conveyor including a drive roller 21 and an endless belt 22. The upper surface of the belt 22 forms the support surface 2s. The amount of movement of the support surface 2s, in other words, the rotation speed and number of rotations of the drive roller 21, is controlled, for example, by a control tool 5. The first direction f1 is, for example, parallel to the short side edge 102 of the cord material 100 on the support surface 2s. The width W2 of the support surface 2s (belt 22) is formed, for example, larger than the length of the cord material 100 tilted at a predetermined angle θ with respect to the first direction. The angle θ is determined according to the application of the sheet-like member 200, etc.

[0015] The supply tool 3 supplies the cord material 100 to a predetermined position P on the support surface 2s. The supply tool 3 supplies the cord material 100 in a second direction f2 inclined at an angle θ to the first direction f1. The second direction f2 is, for example, parallel to the longitudinal direction (long side edge 101) of the cord material 100 placed on the support surface 2s.

[0016] In this embodiment, the supply tool 3 includes a well-known belt conveyor 31 and a well-known first moving member (not shown). The first moving member can move the belt conveyor 31, for example, in the second direction f2 and in the vertical direction f3 perpendicular to the support surface 2s. The belt conveyor 31 includes, for example, a drive roller 31a and an endless belt 31b.

[0017] The pressing roller 4 includes an annular roller body 41 and a support shaft 42 that rotatably supports the roller body 41. The roller body 41 has a pressing surface 41a (shown in FIG. 5) for pressing the cord material 100. The pressing surface 41a is formed to be parallel to an axis 42c of the support shaft 42. The roller body 41 is made of, for example, sponge or urethane. Such a roller body 41 can press the cord material 100 by following the shape of the cord material 100. The support shaft 42 is supported by, for example, a well-known second moving member (not shown). In this embodiment, the second moving member can move the roller body 41 in a second direction f2 and a vertical direction f3.

[0018] The control tool 5 is, for example, configured with a microcomputer having a calculation unit such as a CPU, a storage unit including a RAM and a ROM, and performs a predetermined function by the calculation unit executing a program stored in the storage unit. In this embodiment, the control tool 5 controls the drive roller 21 of the support tool 2, the first moving member of the supply tool 3, and the second moving member of the pressure roller 4. Such a control tool 5 is useful for, for example, setting the position where the cord material 100 is attached to the support surface 2s and the position where the pressure roller 4 holds the cord material 100 to predetermined positions.

[0019] Next, a method for attaching the cord material 100 of this embodiment will be described. FIG. 3 is a flow chart of the attaching method of this embodiment. As shown in FIG. 3, the attaching method of this embodiment includes a first step S1 of preparing a first cord material 100A (shown in FIG. 4), a second step S2 of supplying a second cord material 100B, and a third step S3 of pressing the second cord material 100B. The first cord material 100A and the second cord material 100B are made of cord materials 100 having the same shape. After the third step S3, the step of supplying the cord material 100 and the step of pressing the cord material 100 are repeated in the same manner as the supply and pressing of the second cord material 100B until a long sheet-like member 200 is formed to a predetermined length. In this way, the sheet-like member 200 is manufactured (not shown).

[0020] FIG. 4 is a perspective view conceptually explaining the first step S1 to the third step S3. FIG. 5 is an end view in the second direction f2 conceptually explaining the first step S1 to the third step S3. The attachment method of this embodiment uses the device 1 of this embodiment. First, the first step S1 is performed. As shown in FIG. 4 and FIG. 5, in the first step S1 of this embodiment, the first cord material 100A is placed on the support surface 2s. In the first step S1, in this embodiment, the first cord material 100A is transported in the second direction f2 to the support surface 2s by the supply tool 3. The first cord material 100A is placed on the support surface 2s so that its short side edge 102 is parallel to the first direction f1. When the first cord material 100A is placed on the support surface 2s by the supply tool 3, the control tool 5 drives the drive roller 21 to move the first cord material 100A a predetermined distance in the first direction f1. This predetermined distance corresponds to, for example, the difference (W1a-Lb) between the maximum width W1a (shown in FIG. 1) of the cord material 100 and the overlap length Lb in the width direction (first direction f1) between the first cord material 100A and the second cord material 100B. In the first step S1, after the first cord material 100A is placed on the support surface 2s, the first cord material 100A may be pressed against the support surface 2s by the presser roller 4. The maximum width W1a is the width of the cord material 100 in the first direction f1 (the direction of the short side edge 102).

[0021] Next, the second step S2 is performed. In the second step S2 of this embodiment, the second cord material 100B is supplied by a supply tool 3 to one side in the width direction of the first cord material 100A (the upper side in FIG. 4, the left side in FIG. 5). The second cord material 100B is placed, for example, with its short side edge 102 parallel to the first direction f1. The second cord material 100B is supplied, for example, so as to partially overlap the first cord material 100A in the width direction.

[0022] In the second step S2, for example, the long side edge 101A on one side in the width direction of the first cord material 100A is overlapped vertically with the long side edge 101B on the other side in the width direction of the second cord material 100B in the vertical direction f3. In other words, in the second step S2 of this embodiment, the obtuse angle portion 104 including the long side edge 101A of the first cord material 100A and the point portion 103 including the long side edge 101B of the second cord material 100B are overlapped vertically. Also, the point portion 103 including the long side edge 101A of the first cord material 100A and the obtuse angle portion 104 including the long side edge 101B of the second cord material 100B are overlapped vertically. At this time, in the area where the second cord material 100B and the first cord material 100A overlap, a portion where curled deformation has occurred (hereinafter, sometimes referred to as "curled portion C") is formed in the tip portion 103 of the second cord material 100B.

[0023] Next, the third step S3 is performed. In the third step S3 of this embodiment, the second region K2 of the second cord material 100B is pressed against the support surface 2s by the pressing roller 4. The second region K2 is a region of the second cord material 100B excluding the first region K1. The first region K1 is a region of the second cord material 100B at a first distance La in the width direction (first direction f1) from the long side edge 101B of the second cord material 100B on the first cord material 100A. The second region K2 is a region where the second cord material 100B does not overlap with the first cord material 100A at most. This suppresses interference such as the pressing roller 4 piercing the curled portion C of the second cord material 100B on the first cord material 100A, thereby suppressing early wear of the stagger and the pressing roller 4. This reduces the chance of stopping the production line to correct the stagger or replace the pressing roller 4.

[0024] The first distance La is desirably 20% to 40% of the maximum width W1a of the cord material 100. Since the first distance La is 20% or more of the maximum width W1a, it is possible to suppress interference between the presser roller 4 and the curled portion C. Since the first distance La is 40% or less of the maximum width W1a, it is possible to firmly press the second cord material 100B (cord material 100) against the support surface 2s.

[0025] The first distance La is desirably greater than the overlap length Lb in the width direction between the first cord material 100A and the second cord material 100B, so that the above-mentioned effects are more effectively exhibited.

[0026] In the third step S3, for example, the presser roller 4 presses the second cord material 100B while moving in the second region K2 in the longitudinal direction of the cord material 100. This suppresses positional deviation of the second cord material 100B.

[0027] 4, the curled portion C is formed such that its deformation (distance away from the support surface 2s) decreases from the short side edge 102 of the tip portion 103 toward the center in the longitudinal direction of the cord material 100. For this reason, in the third step S3, it is desirable for the pressure roller 4 to move from the obtuse angle portion 104 of the second region K2 toward the tip portion 103 of the second region K2. This prevents significant interference between the curled portion C generated at the tip portion 103 of the first region K1 and the pressure roller 4, thereby effectively exerting the effect of the present disclosure.

[0028] Although particularly preferred embodiments of the present disclosure have been described in detail above, the present disclosure is not limited to the illustrated embodiments and can be modified in various ways.

[0029] [Note] The present disclosure includes the following aspects.

[0030] [Disclosure 1] A cord material application device for manufacturing a long sheet-like member by connecting a plurality of cord materials including a first cord material and a second cord material, comprising: The cord material has a parallelogram shape including a pair of long side edges extending in a longitudinal direction and a pair of short side edges extending obliquely with respect to a width direction of the cord material between the pair of long side edges, The bonding device includes: a support having a support surface for placing the cord material; a supplying tool for supplying the first cord material and the second cord material onto the support surface so as to partially overlap the first cord material in the width direction; a pressing roller for pressing a second region of the second cord material, excluding a first region that is a region a first distance in the width direction from a long side edge of the second cord material on the first cord material, against the support surface. A device for applying code material. [Disclosure 2] The cord material application device according to Disclosure 1, wherein the first distance is 10% to 30% of a maximum width of the cord material. [Disclosure 3] The code material application device according to Disclosure 1 or 2, wherein the pressure roller presses the second code material while moving in the longitudinal direction in the second region. [Disclosure 4] The cord material includes a pair of point portions where the long side edge and the short side edge intersect at an acute angle, and a pair of obtuse angle portions where the long side edge and the short side edge intersect at an obtuse angle, The cord material application device according to any one of Disclosures 1 to 3, wherein the pressure roller moves from the obtuse angle portion of the second region toward the point portion of the second region. [Disclosure 5] The cord material application device according to any one of Disclosures 1 to 4, wherein the first distance is greater than an overlap length in a width direction between the first cord material and the second cord material. [Explanation of symbols]

[0031] 1. Application device 2 Supports 2s support surface 3 Supplies 4 Presser roller 100 Cord Material 100A 1st cord material 100B Second Code Material K1 1st area K2 2nd area La 1st Distance

Claims

1. A cord material application device for manufacturing a long sheet-like member by connecting a plurality of cord materials including a first cord material and a second cord material, comprising: The cord material has a parallelogram shape including a pair of long side edges extending in a longitudinal direction and a pair of short side edges extending obliquely with respect to a width direction of the cord material between the pair of long side edges, The bonding device includes: a support having a support surface for placing the cord material; a supplying tool for supplying the first cord material and the second cord material onto the support surface so as to partially overlap the first cord material in the width direction; a pressing roller for pressing a second region of the second cord material, excluding a first region that is a region a first distance from a long side edge of the second cord material on the first cord material, against the support surface; The pressing roller presses the second cord material while moving in the longitudinal direction in the second region. A device for applying code material.

2. A cord material attachment device for manufacturing a long sheet-like member by connecting a plurality of cord materials including a first cord material and a second cord material, comprising: The cord material has a parallelogram shape including a pair of long side edges extending in a longitudinal direction and a pair of short side edges extending obliquely with respect to a width direction of the cord material between the pair of long side edges, The bonding device includes: a support having a support surface for placing the cord material; a supplying tool for supplying the first cord material and the second cord material onto the support surface so as to partially overlap the first cord material in the width direction; a pressing roller for pressing a second region of the second cord material, excluding a first region that is a region a first distance from a long side edge of the second cord material on the first cord material, against the support surface; The cord material includes a pair of point portions where the long side edge and the short side edge intersect at an acute angle, and a pair of obtuse angle portions where the long side edge and the short side edge intersect at an obtuse angle, The pressing roller moves from the obtuse angle portion of the second region toward the point portion of the second region. A device for applying code material.

3. A code material application device as described in claim 1 or 2, wherein the first distance is 10% to 30% of the maximum width of the code material.

4. A code material application device as described in any one of claims 1 to 3, wherein the first distance is greater than a widthwise overlap length between the first code material and the second code material.

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