Doubling machine and doubling method that makes it easy to remove tire sets

Abstract

A doubling machine and doubling method that facilitates removal of tire sets Ts. [Solution] A tire T1 in a horizontal position is placed on a mounting table 1, and has upper walls 201, 202 and lower walls 101, 102 that are erected vertically.When the tire T1 is opened radially to expand the tire T1 at the bead portion, a tire T2 in a vertical position is compressed from the left and right by a pressure deformation structure 3 and fitted into the hollow portion of the tire T1, completing a tire set Ts.When a pair of upper expanding tools 21, 22 and a pair of lower expanding tools 11, 12 close, the tire set Ts that has been lowered onto the mounting table 1 is pushed upward by the pushing-up tool, so that the side walls of the pair of lower expanding tools 11, 12 do not face the inner circumference of the tire set Ts, making it easier to remove the tire set Ts.This doubling machine and doubling method.

Description

[Technical Field]

[0001] The present invention relates to a doubling machine that fits a tire T2 having a smaller diameter than the tire T1 into the hollow portion of the tire T1, and a method for easily removing and transporting the doubled tire set Ts. [Background technology]

[0002] Japanese tires are in high demand overseas, both in developed and developing countries. Because export costs are high due to the hollowness of tires when exporting them in containers, a method of fitting one tire inside another tire is used to pack the container tightly. However, given Japan's aging population and labor shortage, it has been pointed out that the process of fitting tire T2, which has a smaller diameter than tire T1, into the hollow space of tire T1 and then transporting the tire set Ts becomes a considerable amount of physical labor. An invention has been proposed for a method and device that allows for easy transport without placing a heavy burden on workers.

[0003] The invention proposed in the following Patent Document 1 relates to technology aimed at providing a tire insertion device and a tire insertion method that can insert and assemble one tire into the wheel mounting hole of another tire, significantly reducing the burden on workers who have to carry out double or triple assembled tires.

[0004] The invention proposed in Patent Document 2 below relates to a technology in which two first proximity points are set at opposing positions on one side of a tire, and two second proximity points are set at opposing positions on the other side at right angles to the first proximity points, the tire is curved so that the first proximity points and the second proximity points approach each other, and when the width dimension of the tire in the direction transverse to the tread surface approaches the hole diameter of the wheel mounting hole of the tire, the tire is inserted into the wheel mounting hole from the tread surface while still curved, and the tire is unfolded and assembled inside the wheel mounting hole. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5387999 [Patent Document 2] Japanese Patent Application Laid-Open No. 2009-131923 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the invention proposed in Patent Document 2 employs a somewhat tricky technique, such as setting a first proximity point and a second proximity point and curving the tire so that the first proximity point and the second proximity point approach each other. When the tire's width dimension in the direction across the tread surface approaches the diameter of the tire's wheel mounting hole, inserting the tire from the tread surface into the wheel mounting hole while maintaining the curved state is likely to require extremely difficult control. Furthermore, it remains questionable whether tires made of hard materials can be curved into the desired shape. Patent Document 2 also shows an embodiment in which one tire is placed sideways on a pedestal and another tire is inserted into it. However, because the weight of double- or triple-mounted tires is considerable (e.g., over 30 kg), removing the heavy tires from the pedestal and transporting them poses a significant burden to the worker.

[0007] However, the invention proposed in the above Patent Document 2 is a horizontal device that allows one tire to be inserted into the wheel mounting hole of another tire and assembled, which appears to have significantly reduced the burden on workers who have to carry out tires that are double or triple assembled, but there is a problem in that the work of inserting another tire into the wheel mounting hole of a tire and assembling it is not very efficient.

[0008] The present invention has been proposed in consideration of the above-mentioned situation, and has a simple configuration in which a horizontal tire T1 is placed on a mounting table, has upper and lower walls that are erected vertically, and opens in the radial direction of the tire T1 to expand the tire T1 at the bead portion, and then a vertical tire T2 is compressed from the left and right by pressure deformation structural devices and fitted into the hollow portion of the tire T1, thereby completing the tire set Ts, and when the pair of upper expanding devices and the pair of lower expanding devices close, the tire set Ts that has been lowered onto the mounting table is pushed upward by the push-up device, so that the side walls of the pair of lower expanding devices do not face the inner peripheral portion of the tire set Ts, thereby facilitating the removal of the tire set Ts, and an object of the present invention is to provide a doubling machine that facilitates the removal of the tire set Ts, and to provide a doubling machine that facilitates the removal of the tire set Ts. [Means for solving the problem]

[0009] The doubling machine of the present invention is a doubling machine that fits a tire T2 having a smaller diameter than the tire T1 into a hollow portion of the tire T1, and includes a mounting base on which the tire T1 in a horizontal state is mounted, a pair of upper diameter expanding tools having side walls erected in a vertical direction and opening in the radial direction of the tire T1 to expand the diameter of the tire T1 at the upper bead portion of the tire T1, a pair of lower diameter expanding tools having side walls erected in a vertical direction and opening in the radial direction of the tire T1 to expand the diameter of the tire T1 at the lower bead portion of the tire T1, a pressure deformation structure device that compresses the tire T2 in a vertical state from the left and right, and a tire T2 mounted on the mounting base. and a push-up tool for pushing up tire T1 upward, and tire T2 compressed by the pressure deformation structure tool is fitted into the hollow portion of tire T1 after tire T1 has been expanded by the pair of upper expanding tools and the pair of lower expanding tools, thereby completing tire set Ts, and when the pair of upper expanding tools and the pair of lower expanding tools close, tire set Ts lowered onto the mounting table is pushed up by the push-up tool, so that the side walls of the pair of lower expanding tools do not face the inner periphery of tire set Ts, thereby facilitating removal of tire set Ts.

[0010] Furthermore, the doubling method of the present invention is a doubling method that can easily remove a tire set Ts after fitting a tire T2 having a smaller diameter than the tire T1 into the hollow portion of the tire T1, and includes a mounting base on which the tire T1 in a horizontal state is placed, a pair of upper diameter expansion tools having side walls erected in the vertical direction and opening in the radial direction of the tire T1 to expand the diameter of the tire T1 at the upper bead portion of the tire T1, a pair of lower diameter expansion tools having side walls erected in the vertical direction and opening in the radial direction of the tire T1 to expand the diameter of the tire T1 at the lower bead portion of the tire T1, and a pressure deformation structure tool that compresses the tire T2 in a vertical state from the left and right, and a push-up tool that pushes up the tire T1 placed on the mounting table, and the tire T2 compressed by the pressure deformation structure tool is fitted into the hollow portion of the tire T1 expanded by the pair of upper expanding tools and the pair of lower expanding tools to complete the tire set Ts, and when the pair of upper expanding tools and the pair of lower expanding tools close, the tire set Ts lowered onto the mounting table is pushed up by the push-up tool, so that the side walls of the pair of lower expanding tools do not face the inner periphery of the tire set Ts, making it easier to remove the tire set Ts. [Effects of the Invention]

[0011] The doubling machine according to the present invention, which fits a tire T2 having a smaller diameter than the tire T1 into a hollow portion of the tire T1, includes a mounting table on which the tire T1 is placed in a horizontal position; The tire T2 is compressed by the pressure deformation structure tool and fitted into the hollow portion of the tire T1. ... That is, the tire set Ts, which is a fairly heavy object, can be easily carried out, and the burden on the workers can be significantly reduced. [Brief explanation of the drawings]

[0012] [Figure 1] 1A, 1B, and 1C are schematic diagrams showing a pushing-up device for pushing up a tire set Ts that has been lowered onto the mounting table of a doubling machine that fits a tire T2 having a smaller diameter than the tire T1 into the hollow portion of the tire T1 according to the present invention, where (a) is a front view, (b) is a side view, and (c) is a plan view. [Figure 2] 1A and 1B are schematic diagrams showing the overall structure of a doubling machine for fitting a tire T2 having a smaller diameter than tire T1 into the hollow portion of tire T1 according to the present invention, where (a) is a front view and (b) is a side view. [Figure 3]This is an explanatory diagram illustrating a doubling machine according to the present invention, which fits a tire T2 having a smaller diameter than tire T1 into the hollow portion of tire T1, on which a horizontally positioned tire T1 is placed; a pair of upper diameter expansion tools having vertically erected side walls that open in the radial direction of tire T1 to expand the diameter of tire T1 at the upper bead portion of tire T1; a pair of lower diameter expansion tools having vertically erected side walls that open in the radial direction of tire T1 to expand the diameter of tire T1 at the lower bead portion of tire T1; and a pressure deformation structure that compresses tire T2 in a vertical position from the left and right. (a) is a front view before the tire T1 in a horizontal position is placed on the mounting table and the lifting actuator is used to lift the mounting table, (b) is a front view after the tire T1 in a horizontal position is placed on the mounting table and the lifting actuator is used to lift the mounting table, (c) is a front view after the tire T1 in a horizontal position has been expanded in diameter by a side expanding tool, (d) is a front view after the mounting table has been lowered and the sidewall portion of the tire T1 has been expanded in the vertical direction and before pressure deformation has occurred when the tire T2 is placed on the upper fixed table and pressed against the left and right tread surfaces, and (e) is a front view of the deformed tire T2 being pressed from the upper tread surface side by a pressing actuator. [Figure 4] 1A and 1B are explanatory diagrams illustrating a tire T2 compressed by a pressure deformation structure tool of a doubling machine for fitting a tire T2 having a smaller diameter than tire T1 into a cavity of tire T1 according to the present invention, being fitted into the cavity of tire T1 to complete tire set Ts, and tire set Ts being lowered onto the mounting table by closing a pair of upper diameter expansion tools and the pair of lower diameter expansion tools. (a) is a front view of the deformed tire T2 being pushed into horizontal tire T1 from the upper tread surface side, (b) is an image of the tire T2 being pushed into horizontal tire T1 from the upper tread surface side and changing direction as it enters the cavity of horizontal tire T1, and (c) is a front view of the tire T2 after it has entered the cavity of horizontal tire T1. [Figure 5]1A and 1B are schematic diagrams showing a pushing-up device pushing up a tire set Ts lowered onto the mounting table of a doubling machine for fitting a tire T2, which has a smaller diameter than tire T1, into the hollow portion of tire T1 according to the present invention. (a) is a front view showing the doubling-completed tire set Ts being pushed up, (b) is a front view showing the doubling-completed tire set Ts being pushed up, (c) is a side view showing the doubling-completed tire set Ts being pushed up and then pushed forward (in the direction of removal) by the direction-changing structure, (d) is a side view showing the doubling-completed tire set Ts being pushed forward (in the direction of removal) by the direction-changing structure, (e) is an image of the tire set Ts being gently pulled down, and (f) is an image of the doubling-completed tire set Ts being dropped from the mounting table and each structure returning to its original position. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, one embodiment of a doubling machine for fitting a tire T2 having a smaller diameter than tire T1 into a hollow portion of tire T1 according to the present invention will be described with reference to the drawings. Note that this embodiment is merely an example that embodies the configuration of the present invention, and various design modifications can be made without departing from the scope of the claims.

[0014] The present invention relates to a doubling machine for fitting a tire T2 having a smaller diameter than the tire T1 into a hollow portion of the tire T1, and a doubling method characterized by facilitating removal of the doubled tire set. The outline thereof, as shown in Figures 2(a) and 2(b), includes a mounting base 1 on which the tire T1 in a horizontal position is mounted, a pair of upper diameter expanding tools 21 and 22 having vertically erected upper walls 201 and 202 and opening in the radial direction of the tire T1 to expand the diameter of the tire T1 at the upper bead portion of the tire T1, a pair of lower diameter expanding tools 11 and 12 having vertically erected lower walls 101 and 102 and opening in the radial direction of the tire T1 to expand the diameter of the tire T1 at the lower bead portion of the tire T1, a pressure deformation structure 3 for compressing the vertically erected tire T2 from the left and right, and a pushing device for pushing up the tire T1 mounted on the mounting base 1. The doubling machine is characterized in that it is equipped with a lifting tool 6, and a tire T2 compressed by the pressure-deformable structure tool 3 is fitted into the hollow portion of the tire T1 expanded in diameter by the pair of upper diameter expanding tools 21, 22 and the pair of lower diameter expanding tools 11, 12, and when the pair of upper diameter expanding tools 21, 22 and the pair of lower diameter expanding tools 11, 12 close, the tire set Ts lowered onto the mounting table 1 is pushed upward by the push-up tool 6, so that the side walls of the pair of lower diameter expanding tools 101, 102 do not face the inner peripheral portion of the tire set Ts, thereby facilitating removal of the tire set. Each means will be described in detail below.

[0015] As shown in Figures 2(a) and 3(a), the mounting table 1 has lower expansion devices 11 and 12 having a pair of vertically erected lower walls 101 and 102, and a horizontal tire T1 placed on it, and is equipped with a function to raise the mounting table 1 using an elevation actuator 10.

[0016] As shown in Figures 2(a), 2(b), and 3(b), the upper fixed base 2 is provided with a pair of upper diameter expansion tools 21, 22 that expand the diameter of the tire T1 by raising the mounting base 1 on which the tire T1 is placed in a horizontal position and inserting the upper walls 201, 202, which are vertically erected below the center position of the upper fixed base 2 at the top, into the inside of the tire T1.

[0017] The mounting table 1 on which the tire T1 is placed in a horizontal position is raised, and the tire T1 is expanded by a pair of upper expanding tools 21, 22 which have upper walls 201, 202 erected vertically and which open in the radial direction of the tire T1 to expand the diameter of the tire T1 at the upper bead portion of the tire T1 by the same operation as the mounting table 1 and upper fixed table 2, and a pair of lower expanding tools 11, 12 which have lower walls 101, 102 erected vertically and which open in the radial direction of the tire T1 to expand the diameter of the tire T1 at the lower bead portion of the tire T1. Also, the lifting actuator 10 lowers the mounting table 1, expanding the sidewall portion of the tire T1 in the vertical direction.

[0018] As shown in Figures 2(a) and 3(d), when a tire T2 smaller than the tire T1 is placed at the center of the upper surface of the upper fixed base 2 with its tread surface facing up and its sidewall portion facing forward, the pressure deformation structure 3 is equipped with pressure deformation actuators 31 and 32 that face and press the left and right tread surfaces of the tire T2. As a result, the tire T2, which is smaller than the tire T1, can easily pass between the upper side walls 201 and 202 extending from the upper surface of the fixing base 2.

[0019] The holding structure 4 is a pressing means using a holding actuator 40 from the upper tread surface side of the deformed tire T2, as shown in Figures 2(a), 3(e), 4(a), 4(b), and 4(c).

[0020] As shown in Figures 2(b) and 4(b), when the tire T2 pushed in by the holding structure 4 enters the hollow portion of the tire T1, the direction-changing structure 5 operates such that the direction-changing actuator 50 provided with the pushing and moving member 501 changes the direction of the tire T2 toward a corner inside the tire T1, while at the same time the holding structure 4 pushes in the tire T2 from the upper tread surface side.

[0021] As shown in Figures 1(a), 1(c), 5(a) and 5(b), the push-up device 6 is provided with push-up actuators 61, 62, 63 and 64 which are provided with push-up members (lifts) 601, 602, 603 and 604 built into the mounting table 1, and which lower the tire set Ts, which has been lowered onto the mounting table 1 by the pair of upper diameter expansion devices 21 and 22 and the pair of lower diameter expansion devices 11 and 12 closing, and which lower the mounting table 1 to its limit. That is, as described above, by pushing upward with the pushing-up tool 6, the side walls of the pair of lower expansion tools 21, 22 do not face the inner periphery of the tire set Ts, thereby making it easier to remove the tire set.

[0022] Although the present invention has been described in detail by way of example, the above-described embodiment is the form disclosed by the applicant that he believes to be the best, and the present invention is not limited to this embodiment. Various design modifications can be made to the present invention without departing from the scope of the claims. [Explanation of symbols]

[0023] 000 ·· Doubling machine characterized by easy removal of tire sets (this invention) 0...frame 1. Mounting table 10. Lift actuator 11...Lower diameter expander 12...Lower diameter expander 101...lower wall 102...lower wall 2...Top fixing base 21...Upper diameter expander 22...Upper diameter expander 201 Upper wall 202 Upper wall 3. Pressure-deformable structure 31 Pressure Deformation Actuator 32 Pressure Deformation Actuator 4. Retaining structure 40. Presser actuator 5. Direction change structure 50···Direction change actuator 501 Push-and-move member 6. Push-up tool 61···Push-up actuator 62···Push-up actuator 63···Push-up actuator 64···Push-up actuator 601··Lifting member 602··Push-up member 603··Push-up member 604··Push-up member T1: Tire placed on the stand T2: Insert the tire Ts···Tire set after doubling is complete

Claims

1. A doubling machine that fits a tire T2 having a smaller diameter than the tire T1 into a hollow portion of the tire T1, The frame is the "skeleton" of the doubling machine, a lifting actuator provided on the frame for lifting and lowering the mounting table; a mounting table connected to the lifting actuator and on which the tire T1 in a horizontal state is placed; a pair of upper diameter expanding tools that are provided on the frame, have side walls erected on the lower side in the vertical direction, and open and close in the radial direction of the tire T1 to expand the diameter of the tire T1 at an upper bead portion of the tire T1; a pair of lower diameter expanding tools that are provided on the mounting table, have side walls erected on the upper side in the vertical direction, and open and close in the radial direction of the tire T1 to expand the diameter of the tire T1 at a lower bead portion of the tire T1; a pressure deformation structure provided on the frame for compressing the tire T2 in a vertical state from the left and right; a holding structure connected to the ceiling center of the frame, stretchable and retractable, for pressing the tire T2 in a vertical state downward from the upper tread surface side into the expanded tire T1; a direction-changing structure that is horizontally movable and is provided on the mounting table, and that pushes and moves the tire T2 in a vertical state horizontally to a corner inside the tire T1 in a horizontal state at the timing when the pushed tire T2 enters the hollow portion of the tire T1; and a push-up tool is provided below the mounting table and rises from the mounting table in order to push up the tire set Ts after doubling is completed; The tire T1 expanded in diameter by the pair of upper diameter expanding tools and the pair of lower diameter expanding tools is compressed by the pressure deformation structure tool, held by the holding structure tool, and further pushed and moved by the direction changing structure tool. The tire T2 is fitted into the hollow portion of the tire T1, and a tire set Ts is formed in a state in which the tire T2 does not protrude above or below the tire T1. When the pair of upper expanding tools and the pair of lower expanding tools close, the tire set Ts lowered onto the mounting table is lowered together with the lower expanding tool by the lowering of the lifting actuator, and with this descent, the upper expanding tool is positioned above the tire set Ts, and the tire set Ts is pushed upward by the pushing-up tool, thereby lowering the side wall of the lower expanding tool to a position where it does not contact the inner circumference of the tire set Ts, and the tire set Ts is pushed to the front side by the direction-changing structure tool, making it easy to remove the tire set Ts from the frame.

2. A doubling method in which a tire T2 having a smaller diameter than the tire T1 is fitted into a hollow portion of the tire T1, The frame is the "skeleton" of the doubling machine, a lifting actuator provided on the frame for lifting and lowering the mounting table; a mounting table connected to the lifting actuator and on which the tire T1 in a horizontal state is placed; a pair of upper diameter expanding tools that are provided on the frame, have side walls erected on the lower side in the vertical direction, and open and close in the radial direction of the tire T1 to expand the diameter of the tire T1 at an upper bead portion of the tire T1; a pair of lower diameter expanding tools that are provided on the mounting table, have side walls erected on the upper side in the vertical direction, and open and close in the radial direction of the tire T1 to expand the diameter of the tire T1 at a lower bead portion of the tire T1; a pressure deformation structure provided on the frame for compressing the tire T2 in a vertical state from the left and right; a holding structure connected to the ceiling center of the frame, stretchable and retractable, for pressing the tire T2 in a vertical state downward from the upper tread surface side into the expanded tire T1; a direction-changing structure that is horizontally movable and is provided on the mounting table, and that pushes and moves the tire T2 in a vertical state horizontally to a corner inside the tire T1 in a horizontal state at the timing when the pushed tire T2 enters the hollow portion of the tire T1; and a push-up tool is provided below the mounting table and rises from the mounting table in order to push up the tire set Ts after doubling is completed; The tire T1 expanded in diameter by the pair of upper diameter expanding tools and the pair of lower diameter expanding tools is compressed by the pressure deformation structure tool, held by the holding structure tool, and further pushed and moved by the direction changing structure tool. The tire T2 is fitted into the hollow portion of the tire T1, and a tire set Ts is formed in a state in which the tire T2 does not protrude above or below the tire T1. A doubling method characterized in that, when the pair of upper expanding tools and the pair of lower expanding tools close, the tire set Ts lowered onto the mounting table is lowered together with the mounting table by the lowering of the lifting actuator, and with this descent bringing the upper expanding tool above the tire set Ts, the tire set Ts is pushed upward by the pushing-up tool, thereby lowering the side wall of the lower expanding tool to a position where it does not contact the inner circumference of the tire set Ts, and the tire set Ts is pushed to the front by the direction-changing structure tool, making it easy to remove the tire set Ts from the frame.

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