JP2010131808A - Tire molding device and tire molding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately wind a tire component member to a body to be molded without assistance when an unvulcanized tire is molded. <P>SOLUTION: The tire component member G drawn on a server 11 is cut in a winding length by a cutting means 20, and the front end and rear end of the tire component member G are sucked and held by respective suction pads 43, 53 of a front end holding sticking means 40 and a rear end holding sticking means 50. Both the holding sticking means 40 and 50 are moved to the side of the body H to be molded, the holding of the front end is released by sticking the front end of the tire component member G to the body H to be molded, and the tire component member G is wound to the body H to be molded by rotating a support 2. In accordance with the winding of the tire component member G, the rear end holding sticking means 50 is moved toward the body H to be molded, and the rear end of the tire component member G is stuck to the body H to be molded to join the ends to each other. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tire forming apparatus and a tire manufacturing method for forming an unvulcanized tire by winding a tire constituent member around a molded object.

  In general, a pneumatic tire is formed by laying out tire components made of unvulcanized rubber or the like on a molded body in order using a tire molding apparatus to form an unvulcanized tire, followed by vulcanization molding in a vulcanization mold. Manufactured. In addition, as a conventional tire molding apparatus, the front end portion of the tire constituent member is attached to the outer periphery of the molding drum, the molding drum is rotated to wind the tire constituent member once, and the front end portion and the rear end portion are joined. An apparatus for forming a predetermined shape is known (see Patent Document 1).

  By the way, from the viewpoint of tire uniformity, the tire components are wound around the molded body with high accuracy, and the arrangement position (set position) with respect to the molded body and the manner of overlapping of the end portions are stabilized for each tire molding. Need to keep the change small. In particular, at the start and end of winding of the tire constituent member, there is a high possibility that the arrangement position on the molded body will deviate from the target position, and it is required that the front end portion and the rear end portion be accurately attached and arranged. The For this reason, in the tire molding process, for example, the amount of displacement from the target position (process value) of the arrangement position, the amount of displacement in the width direction between the ends (step displacement), the amount of overlap between the ends (joint amount), etc. Each range standard is set, and the quality is determined based on this standard to ensure the winding accuracy of the tire constituent members required for the performance (characteristics) of the tire.

  On the other hand, conventionally, after supplying the tire constituent member and winding it around the molded body, the rear end portion is manually cut and manually attached to the molded body according to the tip portion. Yes. In this case, the tire component member can be gripped by hand and easily guided to the correct placement position, and the rear end portion position can be finely adjusted and pasted to match the tip portion position. Arrangement and end-to-end joining can be performed with high accuracy, and each winding standard and accuracy can be satisfied relatively stably.

  However, when manpower is required for winding as described above, the automation of the tire forming process and the improvement of the productivity cannot be achieved, and the full automation of the recent tire manufacturing is hindered. For this reason, the tire constituent member is required to be wound around the molded body without manual intervention while ensuring sufficient accuracy according to the type and the like. At that time, it is necessary to automatically adjust the arrangement positions of the front end portion and the rear end portion of the tire constituent member so as to be accurately attached to the object to be molded, and to realize high-precision winding throughout.

Japanese Patent Laid-Open No. 7-40460

  The present invention has been made in view of such a conventional problem, and its object is to wind a tire component member around a molded body with high accuracy without manual intervention when molding an unvulcanized tire. To improve the productivity of tire manufacturing.

The present invention relates to a tire molding apparatus comprising a tire component supply means and a molding body rotation means, and forms an unvulcanized tire by winding a tire component around a rotating molded body. A cutting means for cutting the member to a winding length around the molded body, a front end holding pasting means and a rear end holding pasting means for holding the winding front end portion and the rear end portion of the tire constituent member respectively and sticking them to the molded body; In accordance with the winding of the tire constituent member with the front end portion attached to the molded body, the rear end holding attaching means for holding the rear end portion is moved toward the formed body to the application position of the rear end portion. Means.
Further, the present invention is a tire manufacturing method for forming an unvulcanized tire by winding a tire constituent member around a rotating molded body, the step of cutting the tire constituent member into a winding length around the molded body, The process of holding the winding tip of the tire component and attaching it to the molded body, the step of winding the tire component having the tip attached to the molded article, and holding the winding rear end of the cut tire component And, the step of moving toward the molded body according to the winding of the tire constituent member around the molded body, the step of attaching the rear end portion of the tire constituent member moved to the molded body to the molded body, It is characterized by having.

  According to the present invention, when an unvulcanized tire is molded, the tire constituent member can be wound around the molded body with high accuracy without manual intervention, and the tire manufacturing productivity can be improved.

Hereinafter, an embodiment of a tire forming device and a tire manufacturing method of the present invention will be described with reference to the drawings.
The tire molding apparatus according to the present embodiment is an apparatus that supplies and winds a tire constituent member around a rotating molded body to form an unvulcanized tire having a predetermined shape and structure, and automatically winds the tire constituent member. It has become.

FIG. 1 is a main part side view schematically showing a schematic configuration of the tire forming apparatus.
As shown in the figure, the tire molding apparatus 1 is disposed above the support 2, the supply means 10 for supplying the tire constituent member G to the support 2, the cutting means 20 for cutting the tire constituent member G, and above them. In addition, a winding device 30 for the tire constituent member G is provided.

  The support body 2 is a support means for supporting the molded body H so as to be rotatable around the axis when the unvulcanized tire is molded. For example, a rigid core having an outer surface shape corresponding to the inner surface shape of the unvulcanized tire to be molded And a cylindrical forming drum that can be expanded and contracted. Here, the support body 2 is composed of a molding drum that can rotate around an axis, and the molding body H is formed by winding or arranging the tire constituent members G in order on the outer peripheral side thereof, and the molding body H is concentric. Hold in shape. Further, the support 2 has a rotation means (not shown) including a drive source such as a motor and a transmission mechanism of the rotational power, and is driven to rotate so that the molded body H is rotated around the axis. It is rotated at a predetermined rotation speed and stopped at an arbitrary rotation angle.

  Here, the to-be-molded body H is an object around which the tire constituent member G is wound at the time of molding an unvulcanized tire, and an unvulcanized tire or work-in-process at an intermediate stage arranged on the support 2 or An intermediate molded body or the like. Alternatively, when the tire constituent member G is directly affixed and wound on the support body 2, a molding drum or a rigid core constitutes the molded body H. Further, the tire constituent member G constitutes each part of the tire such as a bead filler, a side reinforcing member (organic insert), a belt, a tread rubber, or a canvas chafer, which is wound around the molded body H at a predetermined stage of the tire molding process. It is a member, is formed into a band shape or a sheet shape having a predetermined thickness, width and cross-sectional shape from unvulcanized rubber or the like, and is supplied from the supply means 10 toward the molded body H.

  The supply means 10 includes a stock portion (not shown) that stocks a long tire constituent member G by winding it around a roll, and pulls out the tire constituent member G from the stock portion and winds it around the molded body H. Accordingly, the material is supplied to the molding H (arrow K). The supply means 10 includes a server 11 composed of a plurality of transport rolls R that are rotatably supported, and a guide portion 12 disposed between the server 11 and the support 2, and slides the upper side thereof. The tire constituent member G is moved.

  In the present embodiment, a plurality of transport rolls R of the server 11 are arranged in a direction orthogonal to the axial direction of the support body 2, and a plurality of transport rolls R are juxtaposed in the width direction of the tire constituent member G (the front-rear direction in the drawing). Are arranged on the same plane. Moreover, the conveyance roll R is arrange | positioned over the range longer than the winding length to the to-be-molded body H along the movement (supply) path | route of the tire structural member G, and the tire structure previously cut | disconnected by the winding length The entire member G can be placed on the upper side in a linearly extended state. The supply means 10 rotates these conveyance rolls R in conjunction with the movement of the tire constituent member G that abuts, and guides the support constituent 2 by moving the tire constituent member G linearly. In addition, the supply means 10 arranges the guide part 12 adjacent to the support body 2 side (termination side) of the server 11 and in the vicinity of the outer peripheral surface of the support body 2, and protrudes from the upper edge of the guide part 12. The protruding member 12A is brought into contact with one side portion of the tire constituent member G, and the width direction position thereof is maintained at a predetermined position for guidance. That is, the supply means 10 moves the tire constituent member G in the longitudinal direction while guiding the tire constituent member G along a predetermined position by the server 11, and positions the position in the width direction of the tire constituent member G by the guide portion 12. Thereby, the tire constituent member G is guided to a predetermined winding position toward the upper end portion of the molded body H, and is continuously supplied according to the winding around the molded body H.

  The cutting means 20 includes an anvil 21 provided between the transport rolls R, a cutter 22 disposed above the anvil 21, and a piston / cylinder mechanism 23 to which an upper end portion of the cutter 22 is attached. The tire constituent member G is cut by the cutter 22. The anvil 21 is disposed at a position corresponding to the winding length of the tire constituent member G so that the upper surface is below the tire constituent member G on the server 11, and does not hinder movement when the tire constituent member G is supplied. At the time of cutting, the tire constituent member G is supported from the lower surface side. The cutter 22 is driven by the piston / cylinder mechanism 23, and in accordance with the advance / retreat of the piston rod 23P from the cylinder 23S, here, the cutter 22 approaches and separates from the anvil 21 obliquely from above and contacts the tire component G. Cut into a predetermined cutting shape. Further, the cutting means 20 has a moving mechanism (not shown) for moving the piston / cylinder mechanism 23 linearly in the width direction of the tire constituent member G or inclined at a predetermined angle. Thus, the piston / cylinder mechanism 23 and the cutter 22 are moved, and the tire constituent member G is cut by the cutter 22. Thereby, the cutting | disconnection means 20 cut | disconnects the tire structural member G before winding to the winding length to the to-be-molded body H on the server 11, and forms in predetermined shape and length.

  The winding device 30 includes a guide rail 31 disposed above the server 11, a front end holding sticking means 40 and a rear end holding sticking means 50 for the tire constituent member G. The front end portion and the rear end portion in the longitudinal direction of the component member G are respectively held and attached to the molded body H. The guide rail 31 is arranged in a direction perpendicular to the axial direction of the support body 2 and parallel to the server 11, and extends so as to extend linearly from above the server 11 to above the support body 2. Has been. The guide rail 31 is movably attached with a front end holding sticking means 40 on the support 2 side and a rear end holding sticking means 50 on the cutting means 20 side.

  Each holding sticking means 40, 50 includes sliders 41, 51 that slide along the lower surface of the guide rail 31 and move in the longitudinal direction, and piston / cylinder mechanisms 42, 52 fixed downward on the lower surface thereof. And suction pads 43 and 53 attached to the tips (lower ends) of the piston rods 42P and 52P, respectively. In addition, the winding device 30 includes, for example, a slider 41 and 51 provided with a rotating body that is rotated by an electric motor, and the slider 41 and 51 are caused to travel along the guide rail 31 through the rotating body. , 51 for moving the front end and the rear end moving means (not shown). The winding device 30 moves the sliders 41 and 51 independently of each other at a predetermined speed by each moving means, determines the moving distance based on the number of rotations of the electric motor, or detects the position by a sensor, etc. 41 and 51 are stopped at a predetermined position of the guide rail 31. At each of these positions, the holding and sticking means 40 and 50 operate the piston / cylinder mechanisms 42 and 52 to advance and retract the piston rods 42P and 52P from the cylinders 42S and 52S, and move the suction pads 43 and 53 in the vertical direction. Then, the upper surface of the tire constituent member G is brought into contact with and separated from the upper surface.

  The suction pads 43 and 53 are formed in a trumpet shape that gradually increases in diameter toward the opening end (here, the lower end) by an elastic body such as rubber that can be flexibly deformed, and exhausted by a vacuum pump or the like via an air hose or a switching valve. Each is connected to means (not shown). The suction pads 43 and 53 exhaust air between the trumpet-shaped interior and the tire constituent member G contacting the opening end thereof by an exhaust means, and decompress the inside to reduce the tire constituent member G with a predetermined suction force. The suction is stopped, the exhaust is stopped, the inside is restored, and the suction of the tire constituent member G is released. Thus, the suction pads 43 and 53 constitute a suction holding means for the tire constituent member G, and the tire constituent member G is sucked and held detachably from above.

  The winding device 30 lowers the suction pads 43 and 53 of the front end holding sticking means 40 and the rear end holding sticking means 50 to bring them into contact with the respective predetermined positions of the tire constituent member G. Before winding, the winding front end portion and rear end portion are held. In that state, the sliders 41 and 51 are moved, and the holding and pasting means 40 and 50 and the suction pads 43 and 53 are sequentially moved up to the upper side of the molded body H in each stage of the winding operation of the tire constituent member G described later. It is moved and lowered toward the workpiece H. Thereby, each edge part of the tire structural member G is pressed and affixed to the predetermined position on the outer periphery of the to-be-molded body H, and the both ends of the tire structural member G are joined.

  In addition, in this tire molding apparatus 1, the tip holding and pasting means 40 is used as a pulling means that holds the tip of the tire constituent member G before cutting and draws it on the server 11, and the tip holding and pasting means 40 is cut. The tire component G is pulled out by a predetermined length by moving from the 20 side to the support 2 side. Further, the tire component G pulled out is cut by the cutting means 20, the rear end portion on the cut anvil 21 is held by the rear end holding sticking means 50, and then both holding sticking means 40, 50 are moved, The tip end portion of the tire constituent member G is attached to the molded body H by the tip holding sticking means 40.

  In addition, in this embodiment, in order to hold | maintain the tire structural member G over the whole width direction, several suction pads 43 and 53 are arrange | positioned at equal intervals along the same direction, and each is a connection member (not shown). Are attached to the lower ends of the piston rods 42P and 52P. Alternatively, the sliders 41 and 51 are formed longer than the width of the server 11, and are arranged upward in the entire width direction of the server 11 (the front-rear direction in the drawing). A plurality of piston / cylinder mechanisms 42 and 52 having 53 are provided at equal intervals. In this manner, the piston / cylinder mechanisms 42 and 52 are operated to bring the suction pads 43 and 53 into contact with the tire constituent member G, and the tire constituent member G is formed by the plurality of suction pads 43 and 53 in contact with the upper surface thereof. The end of each is sucked and held evenly over the entire width direction.

  However, the plurality of suction pads 43 and 53 are disposed in a direction corresponding to the shape of the cut end portion in order to hold the tire constituent member G along the end portion. That is, the plurality of suction pads 43 and 53 are, for example, arranged linearly along the width direction when the end portion of the tire constituent member G is parallel to the width direction, and in the same direction when the end portions are inclined obliquely. It is inclined and inclined. In this way, the winding device 30 of the present embodiment holds and moves the ends of the tire constituent member G at a plurality of locations. Hereinafter, when referred to as the suction pads 43 and 53, they are simultaneously held by suction. The plurality of suction pads 43 and 53 that move and the like.

  Next, the procedure and operation | movement which winds the tire structural member G around the to-be-molded body H by this tire shaping | molding apparatus 1, shape | molds an unvulcanized tire, and manufactures a tire are demonstrated. The following procedures and the like are controlled by a control device (not shown) and executed by causing each unit of the device to perform related operations at preset timings and conditions. This control device is composed of, for example, a computer having a microprocessor (MPU), a ROM (Read Only Memory) for storing various programs, and a RAM (Random Access Memory) for temporarily storing data directly accessed by the MPU. Each part of the apparatus is connected via a connecting means. Thereby, a control apparatus transmits / receives a control signal and various data with each part of an apparatus, and performs each operation | movement regarding tire shaping | molding, respectively.

2 and 3 are side views of the main part of the tire forming apparatus 1 schematically showing the winding procedure of the tire constituent member G, and sequentially showing the state of each winding stage.
In the tire molding apparatus 1, first, the holding and sticking means 40 and 50 are moved (see FIG. 2A) so that the tip holding and sticking means 40 is positioned above the tip of the cut tire constituent member G on the anvil 21. The suction pad 43 is lowered to suck and hold the tip of the tire constituent member G. Subsequently, in this state, the tip holding and pasting means 40 is moved toward the support body 2, the tire constituent member G is pulled out a predetermined length along the server 11 (see FIG. 2B), and the tip of the tire constituent member G is drawn. When the length from the cutting position to the cutting position by the cutting means 20 reaches a predetermined winding length, the tip holding and sticking means 40 is stopped.

  Next, the cutting means 20 is operated to cut the drawn tire constituent member G with the cutter 22, and the tire constituent member G is formed to have a winding length around the molded body H including the joint amount between the ends. To do. Further, the rear end holding sticking means 50 is moved above the cut rear end portion of the tire constituent member G, and the suction pad 53 is lowered to suck and hold the rear end portion of the tire constituent member G. In this manner, the suction pads 43 and 53 respectively detachably adsorb and hold the same side surface (here, the upper surface opposite to the pasting surface) of the tire component member G. Then, both holding and pasting means 40 and 50 are moved at the same speed synchronously toward the support 2. Thereby, the entire tire constituent member G is moved on the server 11 in the longitudinal direction (left direction K in the figure), and when the held tip portion is moved above a predetermined pasting position of the molding H, Both holding sticking means 40 and 50 are stopped (see FIG. 2C).

  As described above, the tire molding device 1 holds the winding tip portion of the cut tire constituent member G with the tip holding sticking means 40, and the tip portion of the tip portion toward the molding body H by the tip moving means described above. The tip is moved to a sticking position, and the moved tip is stuck to a predetermined position of the molded body H. Specifically, the winding device 30 lowers the suction pad 43 of the tip holding sticking means 40 and presses the opposite side surface (sticking surface) on which the tire constituent member G is sucked against the molded body H (see FIG. 2D). The tip end portion that has been adsorbed and held is pressure-bonded to the workpiece H. Next, the suction of the tire constituent member G by the suction pad 43 is released, the suction pad 43 is raised, the tip holding sticking means 40 is moved to the opposite side of the support 2 and stopped at the standby position (indicated by the broken line in FIG. 2D). ).

  Subsequently, the support body 2 and the molded body H (see FIG. 3A) are rotated around the axis line at a predetermined rotational speed, and with this rotation, the tire constituent member G with the tip attached is pulled out from the server 11, It winds in order from the front-end | tip part to the winding position of the to-be-molded body H. At that time, the rear end holding sticking means 50 is adjusted to wind the tire constituent member G around the molded body H by the rear end moving means while holding the wound rear end portion of the cut tire constituent member G. To move toward the molding H. Accordingly, the rear end portion of the held tire constituent member G is moved and set to the molded object H side at a predetermined speed corresponding to the rotation speed (winding speed) of the support body 2 in synchronization with the winding. Move to a predetermined pasting position at the rear end. Here, during this movement, a longitudinal tension is applied to the tire constituent member G before winding between the rear end holding sticking means 50 (the rear end portion of the held tire constituent member G) and the molded body H. The rear end holding sticking means 50 is moved by the rear end moving means. In this way, the position of the held rear end portion is controlled, the rear end portion is moved while applying a predetermined tension to the tire constituent member G, the support body 2 is rotated 360 degrees, and The tire constituent member G is wound around the outer periphery once.

  Next, the rotation of the support body 2 and the movement of the rear end holding sticking means 50 are stopped (see FIG. 3B), the suction pad 53 is lowered, and the opposite side surface of the tire constituent member G is pressed against the molded body H. (Refer to FIG. 3C) The held rear end portion is pressure-bonded to the molded body H. In this way, the rear end portion of the tire constituent member G that has been moved to the molding body H is pasted to a predetermined position of the molding body H while controlling its position, and is superposed on the tip portion that is pasted first. To join. Thereafter, the suction of the tire constituent member G by the suction pad 53 is released, the suction pad 53 is raised (see FIG. 3D), and the winding of one tire constituent member G is finished. The tire forming apparatus 1 is not yet obtained by winding one or a plurality of tire constituent members G around a predetermined position of the body H to be rotated in a predetermined order in the same manner as described above and combining them with other tire constituent members. Mold vulcanized tires. Subsequently, the formed unvulcanized tire is vulcanized to produce a product tire.

  As described above, in the present embodiment, the tire constituent member G is cut in advance, the front end portion and the rear end portion are held, the front end portion is attached to the molded body H, and the winding is performed. Then, the rear end portion held by the tire constituent member G is moved to a position where it is attached to the molded body H. Therefore, the tire constituent member G can be wound automatically with high accuracy while suppressing misalignment, meandering, etc. in the same state throughout the longitudinal direction. And can be placed on the molded body H after being accurately attached. Along with this, the arrangement position of the tire constituent member G with respect to the molded body H and the method of overlapping the end portions can be stabilized for each tire molding, and the change can be kept small. Each required standard and winding accuracy can be stably secured. As described above, in the tire molding device 1, since the arrangement of the tire constituent members G and the joining of the end portions can be performed automatically and accurately without requiring manpower, the productivity of the tire molding process can be improved, and the tire Uniformity can also be improved.

  Therefore, according to this embodiment, when forming an unvulcanized tire, the tire constituent member G can be wound around the molded body H with high accuracy without manual intervention, and the tire manufacturing productivity is improved. be able to. Further, here, in order to move the rear end portion of the tire constituent member G while applying a predetermined tension to the tire constituent member G between the tire constituent member G and the tire constituent member G, the tire constituent member G wound around the subject H is provided. Can be prevented. At the same time, the tension of the tire constituent member G can be wound while maintaining the same state along the longitudinal direction, and the partial elongation or the like can be suppressed and the tire can be wound in a more even state throughout. As a result, the change in the length of the tire constituent member G at the time of winding can be reduced, and the rear end portion can be more accurately arranged at the set application position.

  On the other hand, for example, when the rear end portion is not held, the length of the tire constituent member G cut to a predetermined length is variously changed during winding, and the tire constituent member G may not be uniform in the tire circumferential direction. is there. Further, in this case, when the length of the tire constituent member G is shortened, it is necessary to extend only the rear end portion side, and conversely, when the length is increased, it is necessary to overlap the end portions more greatly. There is also a risk that the accuracy of the shape of the part, bonding, etc. may be lowered. However, here, such a possibility can be prevented, and the uniformity and winding accuracy of the tire constituent member G can be effectively improved.

  Here, in the tire forming apparatus 1, the tire constituent member G is sucked and held by the suction pads 43 and 53, but the end of the tire constituent member G is moved in the thickness direction by a gripping means such as a robot hand. You may make it hold | maintain by other holding means, such as pinching from both surfaces and holding. Further, the end of the tire constituent member G is released from being held in a state in which the end of the tire constituent member G is brought close to the sticking position of the molded body H until the displacement or variation becomes extremely small, and is dropped toward the molded body H. You may affix by methods other than crimping, such as affixing. However, when the tire constituent member G is detachably sucked and held by the suction holding means such as the suction pads 43 and 53 as in the tire molding apparatus 1, the displacement from the sticking position after the end portion is pasted. The holding can be easily released while preventing the sticking, and the sticking accuracy can be increased. In addition, by pressing the adsorbed end portion against the molded body H and pressing it, the end portion can be strongly and accurately attached.

  In addition, in this embodiment, after cutting the tire constituent member G, the rear end portion was held, but the tire constituent member G was held around the molded body H, such as being cut after holding the rear end portion. Even if it is held at another timing, the same effect as described above can be obtained. The tire molding apparatus 1 is used for molding various tires before vulcanization, such as unvulcanized retreaded tires that are wound around a belt, tread rubber, or the like in addition to a green tire. Can do. Accordingly, the unvulcanized tire formed by the present invention includes various tires such as a retread tire formed by winding the tire constituent member G in addition to the raw tire. In addition, by providing the tire molding device 1 with means for switching and supplying a plurality of types of tire constituent members G, the area used for the tire molding process can be reduced, and space saving can be achieved.

(Turn test of tire component G)
In order to confirm the effect of the present invention, the tire component G was actually wound around the molded body H by the tire molding apparatus 1 described above, and the winding accuracy and the like were evaluated. In the test, ten unvulcanized tires of the same size were formed, and at that time, a predetermined tire constituent member G was wound as described above, and the amount of deviation from the target position of the arrangement position of the tire constituent member G ( The amount of displacement), the amount of shift in the width direction between the ends (step shift amount), and the amount of overlap between the ends (joint amount) were measured. Further, along the longitudinal direction of the tire constituent member G (here, the canvas chafer), marks are made in advance every 100 mm from the end portion, and after winding, the distance between the marks is measured to determine the length of each position. Changes were evaluated.

FIG. 4 is a graph showing each result of the winding test of the tire constituent member G.
The displacement amount of the tire constituent member G (see FIG. 4A) (shown in the figure is an average of measured values of 10 tires) is from the front end (0 degree) to the rear end (360 degrees) as the molded body H rotates. As a result of gradually changing and measuring every 90 degrees between them, they were −0.41, 0.15, 0.39, 0.29, and −0.41 mm. As described above, the displacement amount of the tire constituent member G is kept extremely small as a whole, the vertical difference (Rmax) of the displacement amount is also 0.8 mm, and the winding accuracy around the molded body H can be increased. I understood. Moreover, the joint amount (refer FIG. 4B) of the tire structural member G is 3-7 mm, and the amount of step shifts (refer FIG. 4C) is 0-1.3 mm, each has a small variation, and pastes edge parts correctly. It turned out that it can join.

  Further, the distance between the marks of the tire component G (see FIG. 4D) was measured from the front end side (horizontal axis 1 in the figure) to the rear end side (horizontal axis 12 in the figure) as a result of 100.0. 100.3 mm. Thus, the tire constituent member G was maintained with a very small change in length over the entire longitudinal direction, and the average value was 100.1 mm. From this, it was found that the tire constituent member G can be accurately placed by keeping the tension at the time of winding constant and winding the tire constituent member G in a uniform state while suppressing partial elongation.

  From the above results, according to the present invention, when an unvulcanized tire is molded, the tire constituent member G can be wound around the molded body H with high accuracy without manual intervention to satisfy the required standards. Proven to improve manufacturing productivity.

It is a principal part side view which shows typically schematic structure of the tire shaping | molding apparatus of this embodiment. It is a principal part side view of the tire shaping | molding apparatus which shows typically the winding procedure of a tire structural member. It is a principal part side view of the tire shaping | molding apparatus which shows typically the winding procedure of a tire structural member. It is a graph which shows each result of the winding test of a tire constituent member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Tire shaping | molding apparatus, 2 ... Support body, 10 ... Supply means, 11 ... Server, 12 ... Guide part, 20 ... Cutting means, 21 ... Anvil, 22. ..Cutter, 23 ... Piston / cylinder mechanism, 30 ... Wounding device, 31 ... Guide rail, 40 ... Tip holding means, 41 ... Slider, 42 ... Piston / cylinder Mechanism: 43 ... Adsorption pad, 50 ... Rear end holding sticking means, 51 ... Slider, 52 ... Piston / cylinder mechanism, 53 ... Adsorption pad, H ... Molded object, G ... tire components, R ... transport rolls.

Claims (6)

A tire molding device comprising a tire component supply means and a molded body rotation means, and forms a non-vulcanized tire by winding the tire component around a rotating molded body,
Cutting means for cutting the tire component into a winding length around the molded body;
A front end holding sticking means and a rear end holding sticking means for holding and attaching the winding front end portion and the rear end portion of the tire constituent member to the molded body, and
A moving means for moving the rear end holding sticking means for holding the rear end portion toward the molded body to the sticking position of the rear end portion in accordance with the winding of the tire constituent member with the front end portion attached to the molded body. And a tire forming apparatus. In the tire forming apparatus according to claim 1,
A tire molding apparatus, wherein the moving means moves the rear end holding and pasting means while applying tension to a tire constituent member between the rear end holding and pasting means and the molded body. In the tire forming apparatus according to claim 1 or 2,
Each of the holding and sticking means includes a suction holding means for sucking and holding a tire constituent member in a detachable manner. A tire manufacturing method for forming an unvulcanized tire by winding a tire component around a rotating molded body,
Cutting the tire constituent member into a winding length around the molded body; and
Holding the winding tip of the tire component and attaching it to the molded body;
A step of winding the tire constituent member to which the tip is pasted around the molded body;
A step of holding the wound rear end portion of the cut tire constituent member and moving the tire constituent member toward the molded body in accordance with the winding of the tire constituent member on the molded body; and
A tire manufacturing method comprising: attaching a rear end portion of the tire constituent member moved to the molded body to the molded body. In the tire manufacturing method according to claim 4,
The tire manufacturing method characterized in that the moving step moves the rear end portion held while applying tension to the tire constituent member between the rear end portion of the tire constituent member and the molded body. In the tire manufacturing method according to claim 4 or 5,
A step of detachably adsorbing and holding the front end portion and the rear end portion of the tire constituent member,
Each step of affixing the front and rear ends of the tire component member to the molded body is a process of pressing the opposite side surface adsorbed by the tire component member against the molded body and releasing the adsorption of the compressed tire component member A tire manufacturing method comprising the steps of:

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