High-pressure foaming system for inside of tire

Abstract

The present invention provides a high-pressure foaming system for the inside of a tire, wherein the high-pressure foaming system, while continuously loading and unloading tires, automatically and uniformly injects a high-pressure mixture of raw materials into the tires to effectively and continuously produce tires with sound insulation and sound absorption effects. The high-pressure foaming system includes: a loading conveyor on which tires are placed upright from the outside and continuously conveyed in a straight line toward a supply path; a rotary table which is arranged in a perpendicular direction so as to correspond to the end of the loading conveyor, and which rotates individual tires in a locked and fixed state and drives the tires to repeatedly rotate by a set operation angle; an unloading conveyor which is disposed spaced apart from the loading conveyor with respect to the rotary table and on which the tires that have passed through the rotary table are placed upright and then continuously conveyed in a straight line toward a discharge path; a switching conveyance gripper which is installed between the loading conveyor and the unloading conveyor so as to correspond to the rotary table and can grip and then pick up and convey tires, and which drives the supply and discharge of tires toward the rotary table; and a high-pressure foaming device which is disposed on the opposite side of the rotary table to the switching conveyance gripper, and foams a mixed primer at high pressure inside the tires fixed on the rotary table.

Description

High-pressure foaming system inside the tire

[0001] The present invention relates to a high-pressure foaming system inside a tire, and more particularly, to a high-pressure foaming system inside a tire that can efficiently and continuously produce tires having sound insulation and sound absorption effects by automatically uniformly spraying a high-pressure mixed raw material inside a tire while continuously loading and unloading the tire.

[0002]

[0003] As carbon dioxide emission regulations have become increasingly stringent, the automobile industry is racing to release eco-friendly, low-noise hybrid, electric, and hydrogen fuel cell vehicles. Consequently, research is also actively underway on developing eco-friendly tires and improving tire performance.

[0004]

[0005] Here, tires are the only automotive components that come into contact with the ground, and they are a key component that significantly impacts the vehicle's power transmission, steering, fuel economy, and braking performance. Beyond basic power performance, tires are also closely related to noise and vibration generated during driving. In particular, the primary cause of road noise in the low-frequency range of 200-250 Hz is the resonance generated by tires as they move. The most effective way to reduce this resonance is to remove it directly from the tire. Since the tire is mounted on the vehicle with the wheel attached, the tire and wheel form a sealed structure, filled with air at high pressure (30-40 psi). These high-pressure, sealed tires rotate due to engine output, and the high-speed rotational force generates resonance noise.

[0006]

[0007] Accordingly, as a way to improve the resonance noise generated from tires, tires with a sound-absorbing structure are being produced by attaching urethane foam to the tire using double-sided tape and a toluene-based primer.

[0008]

[0009] Here, a typical sound-absorbing material for tires is polyurethane (PU), which has closed internal cells and open external cells. Polyurethane is widely used due to its excellent mechanical properties, insulation, shock absorption, sound-absorbing properties, and processability. When polyurethane foam is placed inside a tire, the tire resonance generated during driving is dissipated into heat energy as it passes through the foam's internal path, or the resonance frequency is altered, thereby reducing the resonance.

[0010]

[0011] As a prior art disclosed in relation to the technology for attaching sound-absorbing material to a tire as described above, Patent Publication No. 971729 (July 15, 2010) discloses a tire sound-absorbing material attachment device capable of improving work efficiency by attaching sound-absorbing material, which comprises: a rotary table on which a tire is rotatably mounted and fixed; a transport conveyor for continuously transporting sound-absorbing material having an adhesive applied to one surface toward the rotary table; a guide rail installed between the rotary table and the transport conveyor for guiding the sound-absorbing material transported from the transport conveyor into the inside of the tire; and a pressurizing means for pressurizing the sound-absorbing material guided into the inside of the tire so that it is attached to the inner surface of the tire.

[0012]

[0013] In addition, Patent Publication No. 917443 (September 8, 2009) discloses a method for manufacturing a low-noise tire, which comprises the steps of: attaching a guide sheet having a predetermined pattern perforated on the inner surface of a tire; spraying an adhesive so as to be applied to the inner surface of the tire according to the pattern shape of the guide sheet; removing the guide sheet from the inner surface of the tire; and attaching a sound absorber using the adhesive applied on the inner surface of the tire, wherein in the sound absorber attachment step, the sound absorber is attached so as to define a closed resonance space within the cavity of the tire, thereby reducing material costs and thus reducing production costs.

[0014]

[0015] However, in the above-mentioned conventional technology, there was a problem in that the workability and productivity were significantly reduced because the loading and unloading processes of tires toward the work table were all manual, and the work of attaching sound-absorbing materials to each tire was performed individually.

[0016]

[0017] The present invention is intended to solve the above-mentioned problems, and the technical task of the present invention is to provide a tire internal high-pressure foaming system that can increase work efficiency and increase process productivity according to work continuity by configuring a sound-absorbing laminator to be high-pressure foamed while automating the tire loading and unloading process and continuously rotating at various angles.

[0018]

[0019] The high-pressure foaming system inside a tire proposed by the present invention comprises: a loading conveyor configured to place tires in an upright state from the outside and continuously transport them in a straight direction toward a supply path; a rotary table arranged in a right angle direction corresponding to an end of the loading conveyor and driving individual tires to rotate in a locked and fixed state while repeatedly rotating at a work-set angle; an unloading conveyor arranged at a distance from the loading conveyor based on the rotary table and configured to place tires that have passed through the rotary table in an upright state and then continuously transport them in a straight direction toward a discharge path; a switching transfer gripper installed between the loading conveyor and the unloading conveyor corresponding to the rotary table and configured to supply and discharge tires toward the rotary table by gripping the tires and then picking them up and transporting them; A technical solution is to provide a tire internal high-pressure foaming system comprising a high-pressure foaming machine that is arranged on the opposite side of the above-mentioned transfer gripper based on the above-mentioned rotary table and foams a mixed primer at high pressure on the inside of a tire fixed on the above-mentioned rotary table.

[0020]

[0021] The above loading conveyor and the above unloading conveyor are configured to have a plurality of panel-type transport belts capable of supporting individual tires connected together, and a support fixing member is configured on the upper part of the panel-type transport belts to support the tires in an upright state by symmetrically arranging them at intervals from each other.

[0022]

[0023] The above rotary table comprises a base frame having a fixed bottom installed away from the ground, a rotary plate installed on the base frame so as to be rotatable, a stand assembly configured to be fixedly installed on the rotary plate and arranged at intervals in the outer circumferential direction to form a plurality of locking and fixing units capable of gripping and fixing a tire, and a table driving means installed on the base frame and driving the rotary plate on which the stand assembly is mounted to rotate by a set angle.

[0024]

[0025] The above stand assembly comprises a grip rotation driving means that connects and fixes the above locking unit and drives it to apply rotational force in the direction of the tire's circumference.

[0026]

[0027] The above locking unit comprises a fixing clamp that protrudes forwardly so as to be in contact with the outer circumference of the tire, a hanger plate that comprises a plurality of clamp guides that allow the fixing clamps to be spaced apart along the circumference and that support the fixing clamps so that their positions can be variably mounted, a squeeze plate that is rotatably installed at the rear of the hanger plate and connects the fixing clamps while having a plurality of curved guide holes that guide the movement of the fixing clamps toward the tire, and a clamping driving means that extends and drives the squeeze plate so as to apply a rotational force to the squeeze plate.

[0028]

[0029] The above-mentioned fixed clamp comprises a grip member formed to protrude outwardly and capable of fixing a tire, a guide block that connects and supports the grip member on the hanger plate and is installed so as to be able to slide in a straight direction on a clamp guide of the hanger plate, and a cam flow that is installed so as to be able to move on a curved guide hole of the squeeze plate and has one end connected to the guide block.

[0030]

[0031] The above locking unit is provided with a guide roller installed on the hanger plate and configured to be in cloud contact with the outer periphery of the squeeze plate.

[0032]

[0033] The above locking unit comprises a stopper part that contact-detects the set rotation radius of the squeeze plate by the clamping driving means.

[0034]

[0035] The above-mentioned switching transfer gripper and the high-pressure foaming machine each include a multi-joint robot that is configured and controlled to be capable of multi-axis operation with a degree of freedom within a radius of operation by connecting and assembling a plurality of arms with rotary joints, and the multi-joint robot comprises a first multi-joint robot that is movably driven in a path toward the loading conveyor and the unloading conveyor based on the rotary table from the switching transfer gripper, and a second multi-joint robot that is movably driven in a path toward the inside of a tire fixed on the rotary table from the high-pressure foaming machine.

[0036]

[0037] The above-mentioned transition transfer gripper is provided with a gripping means that is installed at the tip of the first multi-joint robot and is configured to be able to grip the inside of a tire.

[0038]

[0039] The high-pressure foaming machine comprises a head block having a primer supply path and a mixing path formed inside and a foaming nozzle provided at the front so as to be capable of foaming a mixed primer, raw material supply blocks installed on both sides of the head block and connected so as to be capable of supplying two types of primers from the outside, a pressurizing needle means installed on the head block corresponding to the raw material supply block and ejecting the primer supplied from the raw material supply block by applying pressure toward the mixing path, a pressurizing cylinder installed on the upper portion of the head block and applying pressure in a vertical direction so that the mixed primer ejected from the pressurizing needle means and mixed in the mixing path faces the supply path, and a foaming cylinder installed at the rear of the head block and driven so as to eject the mixed primer supplied through the pressurizing cylinder toward the foaming nozzle.

[0040]

[0041] According to the tire internal high-pressure foaming system according to the present invention, the process of loading and unloading a tire for sound absorption work inside the tire is automated, and the high-pressure foaming of the sound absorption laminator is sequentially and continuously driven along with repeated rotational transfer at various angles, thereby improving workability to promote convenience and speed of work, minimizing input manpower to reduce production costs, and improving work accuracy to improve production quality while achieving the effect of promoting mass production through continuous automatic production.

[0042]

[0043] Figure 1 is a diagram showing the overall equipment configuration of one embodiment according to the present invention.

[0044] FIG. 2 is a perspective view showing a panel-type transport belt applied to a loading conveyor and an unloading conveyor in one embodiment according to the present invention.

[0045] Figure 3 is a front view showing a rotary table in one embodiment according to the present invention.

[0046] Figure 4 is a side view showing a rotary table in one embodiment according to the present invention.

[0047] Figure 5 is a front view and an enlarged view showing a locking unit in one embodiment according to the present invention.

[0048] Figure 6 is a cross-sectional view showing a locking unit in one embodiment according to the present invention.

[0049] Figure 7 is a front view showing a squeeze plate in one embodiment according to the present invention.

[0050] Figure 8 is a front view showing a transfer gripper according to one embodiment of the present invention.

[0051] Figure 9 is a front view showing a high-pressure foamer according to one embodiment of the present invention.

[0052] Fig. 10 is a cross-sectional view showing a high-pressure foamer according to one embodiment of the present invention.

[0053] Fig. 11 is a side cross-sectional view showing a high-pressure foamer according to one embodiment of the present invention.

[0054]

[0055] The present invention comprises: a loading conveyor configured to place tires in an upright position from the outside and continuously transport them in a straight direction toward a supply path; a rotary table arranged in a right angle to the end of the loading conveyor and driving the individual tires to rotate in a locked and fixed state while repeatedly rotating at a work-set angle; an unloading conveyor arranged at a distance from the loading conveyor with the rotary table as a reference and configured to place tires that have passed through the rotary table in an upright position and then continuously transport them in a straight direction toward a discharge path; a switching transfer gripper installed between the loading conveyor and the unloading conveyor and corresponding to the rotary table, capable of picking up and transporting tires after gripping them, and configured to drive the supply and discharge of tires toward the rotary table; The technical configuration of the tire internal high-pressure foaming system comprises a high-pressure foaming machine that is arranged on the opposite side of the above-mentioned transfer gripper based on the above-mentioned rotary table and foams a mixed primer at high pressure on the inside of a tire fixed on the above-mentioned rotary table.

[0056]

[0057] Next, a preferred embodiment of a high-pressure foaming system inside a tire according to the present invention will be described in detail with reference to the drawings.

[0058]

[0059] First, as shown in Fig. 1, one embodiment of a tire internal high-pressure foaming system according to the present invention comprises a loading conveyor (10), a rotary table (100), an unloading conveyor (20), a transfer gripper (30), and a high-pressure foaming machine (200).

[0060]

[0061] The above loading conveyor (10) sequentially supplies tires (T) from the outside, and performs the function of continuously transporting each tire (T) by placing it in an upright position.

[0062]

[0063] The above loading conveyor (10) is configured to transport in a straight direction toward the supply path of the tire (T) where the above switching transfer gripper (30) is located.

[0064]

[0065] The above unloading conveyor (20) sequentially discharges tires (T) that have passed through the above rotary table (100), and after each tire (T) is placed in an upright position, continuously transports them in a straight direction toward the discharge path of the tire (T).

[0066]

[0067] The above unloading conveyor (20) is configured to be spaced apart from the loading conveyor (10) based on the rotary table (100). That is, it is configured to transport the tire (T) that has completed work from the rotary table (100) toward the outside.

[0068]

[0069] The above loading conveyor (10) and the above unloading conveyor (20) are configured to have multiple panel-type transport belts (B) that can support individual tires (T) connected together, and are driven to repeatedly transport at set intervals.

[0070]

[0071] As shown in Fig. 2, the above panel-type conveying belt (B) is provided with a support fixing member (C) that is symmetrically arranged at an interval from each other on the upper side to support the tire (T) in an upright state during conveying operation.

[0072]

[0073] The above-mentioned transfer gripper (30) performs the function of supplying and discharging tires (T) based on the above-mentioned rotary table (100).

[0074]

[0075] The above-mentioned transfer gripper (30) is arranged between the loading conveyor (10) and the unloading conveyor (20), as shown in Fig. 1, and is installed corresponding to the rotary table (100).

[0076]

[0077] The above-mentioned transfer gripper (30) is configured to drive the supply and discharge of tires toward the rotary table (100).

[0078]

[0079] The above-mentioned switching transfer gripper (30) and the high-pressure foamer (200) are configured with a multi-joint robot (R1) (R2) that is configured to be driven in multiple axes with a degree of freedom of operation within a radius of operation by assembling and connecting multiple arms with rotary joints. That is, as shown in FIGS. 8 and 9, the above-mentioned multi-joint robot (R1) (R2) is configured with a first multi-joint robot (R1) that is driven movably in a path toward the loading conveyor (100) and the unloading conveyor (20) based on the rotary table (100) from the switching transfer gripper (30), and a second multi-joint robot (R2) that is driven movably toward the inside of a tire (T) fixed on the rotary table (100) from the high-pressure foamer (200).

[0080]

[0081] As shown in Fig. 8, the above-mentioned transfer gripper (30) is configured with a gripping means (35) that is installed at the tip of the first multi-joint robot (R1) to be capable of gripping the inner side of the tire (T) after gripping the tire (T) and is capable of being transported. At this time, the gripping means (35) is configured to be capable of gripping the tire (T) while changing its diameter in response to the inner diameter of the tire (T).

[0082]

[0083] The above rotary table (100) supports and fixes the tires (T) so that work processes can be performed at positions corresponding to the above-mentioned transfer gripper (30) and the above-mentioned high-pressure foamer (200), and performs the function of rotating each tire (T) in a locked state.

[0084]

[0085] As shown in Fig. 1, the above rotary table (100) is arranged in a right angle direction corresponding to the end of the loading conveyor (10), and is installed corresponding to the switching transfer gripper (30) and the high-pressure foamer (200).

[0086]

[0087] The above rotary table (100) is a driving structure that repeatedly rotates at a work setting angle along a path corresponding to the above switching transfer gripper (30) and the above high-pressure foamer (200), as shown in FIGS. 3 and 4, and is composed of a base frame (110), a rotary plate (120), a stand assembly (130), and a table driving means (160).

[0088]

[0089] The above base frame (110) is the most basic basic component of the rotary table (100), and is fixedly installed at the bottom at the installation location and is separated from the ground to support the rotary plate (120) and the stand assembly (130) so that they rotate.

[0090]

[0091] The above rotating plate (120) is installed and fixed to the stand assembly (130), and is installed on the base frame (110) so as to be rotatable.

[0092]

[0093] The base frame (110) is configured to have a rotation support roller (115) installed thereon to support the smooth rotation of the rotation plate (120). That is, the rotation support rollers (115) are arranged at intervals along the rotation radius on the lower outer side of the rotation plate (120), and are configured to contact and support the rotation plate (120), thereby promoting the smooth rotation of the rotation plate (120) through rotational contact.

[0094]

[0095] As shown in FIGS. 3 and 4, the above stand assembly (130) is fixedly installed on the rotating plate (120) and comprises a plurality of locking and fixing units (140) for fixing the tire (T).

[0096]

[0097] As shown in Fig. 1, the locking and fixing units (140) of the above stand assembly (130) can be configured to be arranged in a plurality (1 to 8) with a space between them in the outer circumferential direction of the stand assembly (130). That is, in the drawings (Figs. 3 to 4), a structure is configured in which one locking and fixing unit (140) is applied to rotate by 180°, but in the present invention, it is possible to design and configure a structure in which the locking and fixing units (140) are selectively applied within a range of 1 to 8 on the stand assembly (130) to rotate by an angle of 45 to 180°.

[0098]

[0099] The above stand assembly (130) comprises a grip rotation driving means (150) that drives the locking unit (140) to apply rotational force. That is, the grip rotation driving means (150) connects and fixes the locking unit (140) to be rotatably installed on the stand assembly (130) and drives it to apply rotational force in the circumferential direction of the tire (T).

[0100]

[0101] The above locking unit (140) comprises, as shown in FIGS. 5 and 6, a fixed clamp (141) configured to be gripped by directly contacting the outer periphery of a tire (T), a hanger plate (143) that movably mounts and supports the fixed clamp (141) and has a plurality of clamp guides (144) formed thereon, a squeeze plate (145) that has a plurality of curved guide holes (146) formed thereon, and a clamping driving means (147) that applies driving power to the fixed clamp (141) to grip the tire (T).

[0102]

[0103] The above-mentioned fixed clamp (141) is configured to protrude forward to hold a tire (T), as shown in FIGS. 5 and 6, and comprises a grip member (141a) that protrudes outward to enable fixing the tire (T), a guide block (141b) that connects and supports the grip member (141a) on the hanger plate (143), and a cam flow (141c) that has one end connected to the guide block (141b).

[0104]

[0105] The above grip member (141a) forms a concave contact surface inwardly corresponding to the curved tire (T), thereby minimizing the pressure of the tire and securing a sufficient contact area to increase the clamping fixation efficiency, and preventing deformation of the tire (T), thereby improving the work quality.

[0106]

[0107] The above guide block (141b) is installed so as to be able to slide in a straight direction on the clamp guide (144) of the hanger plate (143) so that the grip member (141a) is fixedly installed and moves toward the outer periphery of the tire (T).

[0108]

[0109] The above cam flow (141c) is formed to protrude rearward on the opposite side of the grip member (141a) from the guide block (141b) and is installed movably on the curved guide hole (146) of the squeeze plate (145).

[0110]

[0111] The above cam flow (141c) is a roller structure that can rotate at one end and is installed movably on the curved guide hole (146) of the squeeze plate (145). That is, the cam flow (141c) is installed in a joint manner within the curved guide hole (146), and as the cam flow (141c) rolls along the curved path of the curved guide hole (146), the guide block (141b) on which the grip member (141a) is installed slides along a straight direction within the clamp guide (144), thereby promoting the gripping drive of the grip member (141a) toward the tire (T).

[0112]

[0113] The above hanger plate (143) is fixedly installed on the rotation axis of the grip rotation driving means (150) in the above stand assembly (130), and supports one side of the tire (T) while movably mounting the fixed clamp (141) for gripping the tire (T).

[0114]

[0115] The above clamp guides (144) are arranged at intervals along the front circumferential direction of the hanger plate.

[0116]

[0117] The above clamp guide (144) variably supports and mounts the tire (T) from the fixed clamp (141) to a position where it can be gripped. That is, when a plurality of the clamp guides (144) arranged in the circumferential direction change their positions in response to the axial direction of the hanger plate (143) according to the diameter of the tire (T), they guide the linear movement of each fixed clamp (141).

[0118]

[0119] The above squeeze plate (145) is arranged parallel to the rear of the hanger plate (143) and is configured to be installed so as to be rotatable separately from the hanger plate (143).

[0120]

[0121] As shown in Fig. 7, the above squeeze plate (145) is formed with a curved guide hole (146) that guides the movement of the fixed clamp (141) toward the tire (T) by the clamping driving means (147). At this time, the curved guide hole (146) is formed on the squeeze plate (145) and is configured to have a plurality of holes corresponding to the clamp guides (144) of the hanger plate (143).

[0122]

[0123] The above curved guide hole (146) accommodates and connects the above cam flow (141c) among the above fixed clamps (141), and the above cam flow (141c) forms a path along which the cloud can move according to the rotational direction of the squeeze plate (145).

[0124]

[0125] The above curved guide hole (146) is formed in a long hole shape that extends along a curved path, and the positions of both ends are formed at different diameters based on the center of the squeeze plate (145). That is, the position of the fixed clamp (141) is changed while moving the cam flow (141c) along the path of the curved guide hole (146) according to the rotational direction of the squeeze plate (145).

[0126]

[0127] The above clamping driving means (147) extends and drives the squeeze plate (145) to apply rotational force.

[0128]

[0129] The above locking unit (140) is provided with a guide roller (148) that is installed on the hanger plate (143) and is configured to be in cloud contact with the outer periphery of the squeeze plate (145), so that it is possible to ensure smooth rotation of the squeeze plate (145) according to the driving of the clamping driving means (147).

[0130]

[0131] In addition, the locking unit (140) comprises a stopper part (149) that contact-detects the set rotation radius of the squeeze plate (145) by the clamping driving means (147). That is, when the squeeze plate (145) rotates forward or backward by the extension drive of the clamping driving means (147), the stopper part (149) contact-detects so that the squeeze plate (145) can rotate within the set rotation radius.

[0132]

[0133] The above stopper part (149) comprises a stopper block (149a) that protrudes outwardly on the squeeze plate (145), and a stopper (149b) that is arranged on the hanger plate (143) at a distance from each other by the rotation radius of the squeeze plate (145) and detects contact with the stopper block (149a).

[0134]

[0135] The above table driving means (160) is installed on the base frame (110) and is configured to drive the rotating plate (120) equipped with the stand assembly (130) to rotate by a set angle.

[0136]

[0137] The above table driving means (160) is configured to be hinge-joined to the base frame (110) so as to be rotatable, and connected to the rotation axis connected to the rotation plate (120) by a link member (161) so as to be extendable.

[0138]

[0139] The above high-pressure foamer (200) performs the function of foaming a mixed primer at high pressure onto the inside of a tire (T) fixed on the rotary table (100).

[0140]

[0141] As shown in Fig. 1, the high-pressure foaming machine comprises a raw material tank (2) capable of supplying individual primers and a feeding pump (6), a plurality of pipelines (4) for supplying raw materials, a cooling system (5) for cooling the raw materials to a set temperature, and a liquid injector (1) for injecting the primer toward the high-pressure foaming machine.

[0142]

[0143] The high-pressure foamer (200) is configured to be placed on the opposite side of the transfer gripper (30) with respect to the rotary table (100), as shown in Fig. 9, and is installed on the second multi-joint robot (R2). That is, the high-pressure foamer (200) is configured to approach the inside of the tire (T) fixed to the rotary table (100) by the drive of the second multi-joint robot (R2) and then perform foaming.

[0144]

[0145] As shown in FIGS. 10 and 11, the high-pressure foamer (200) comprises a head block (210) configured to be able to foam a mixed primer by having a foaming nozzle (251) at the front, raw material supply blocks (220) installed on both sides of the head block (210) to connect two types of primers so as to be able to be supplied from the outside, a pressurized needle means (230) for applying pressure to eject the primer supplied from the raw material supply block (220), a pressurized cylinder (240) configured to be able to apply pressure to the mixed primer to transport and eject it, and a foaming cylinder (250).

[0146]

[0147] The above head block (210) supports the configuration of the raw material supply block (220), the pressure needle means (230), the pressure cylinder (240), and the foaming cylinder (250), and forms a mixing path (213) extending vertically on the inside and a supply path (211) extending horizontally.

[0148]

[0149] The above-mentioned pressurized needle means (230) is installed on the head block (210) corresponding to the raw material supply block (220), and is connected to the raw material supply block (220) so that the primer can move, and is ejected toward the mixing furnace (213) so that two types of primers supplied through different paths can be mixed with each other.

[0150]

[0151] The above pressurizing cylinder (240) is installed so as to be vertically extendable in response to the mixing chamber (213) at the upper portion of the head block (210), and applies pressure in the vertical direction so that the mixed primer ejected from the pressurizing needle means (230) and mixed in the mixing chamber (213) is directed toward the supply passage (211).

[0152]

[0153] The above foaming cylinder (250) is installed at the rear of the head block (210) and is extended to discharge the mixed primer supplied through the pressure cylinder (240) toward the foaming nozzle (251).

[0154]

[0155] That is, according to the tire internal high-pressure foaming system according to the present invention configured as described above, the process of loading and unloading a tire for sound absorption work inside a tire is automated, and the high-pressure foaming of the sound absorption laminator is sequentially and continuously driven along with repeated rotational transfer at various angles, thereby improving workability to promote convenience and speed of work, minimizing input manpower to reduce production costs, and improving work accuracy to improve production quality, while promoting mass production through continuous automatic production.

[0156]

[0157] Although the preferred embodiment of the tire internal high-pressure foaming system according to the present invention has been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the patent claims, the specification of the invention, and the attached drawings, and this also falls within the scope of the present invention.

[0158]

[0159] The present invention relates to a high-pressure foaming system inside a tire, and more specifically, to a high-pressure foaming system inside a tire that can efficiently and continuously produce tires having sound insulation and sound absorption effects by automatically uniformly spraying a high-pressure mixed raw material inside a tire while continuously loading and unloading the tire, and has industrial applicability.

Claims

1. A loading conveyor configured to continuously transport tires in a straight line toward the supply path by placing them in an upright position from the outside; A rotary table arranged in a right angle direction corresponding to the end of the above loading conveyor, and driving the individual tires to rotate in a locked state and repeatedly rotate at each work setting angle; An unloading conveyor arranged at a distance from the loading conveyor based on the rotary table, and configured to continuously transport tires that have passed through the rotary table in a straight line toward a discharge path after being placed in an upright position; A switching transfer gripper, which is installed corresponding to the rotary table between the loading conveyor and the unloading conveyor, and is configured to pick up and transfer the tire after gripping it, thereby supplying and discharging the tire toward the rotary table; A tire internal high-pressure foaming system comprising a high-pressure foaming machine configured to be arranged on the opposite side of the above-mentioned transfer gripper based on the above-mentioned rotary table and to foam a mixed primer at high pressure onto the inside of a tire fixed on the above-mentioned rotary table.

2. In claim 1, The above loading conveyor and the above unloading conveyor are configured to connect multiple panel-type conveying belts capable of supporting individual tires, A high-pressure foaming system inside a tire, comprising a support fixing member that supports the tire in an upright state by symmetrically arranging the support fixing member at intervals from each other on the upper part of the above panel-type conveying belt.

3. In claim 1, The above rotary table is a tire internal high-pressure foaming system comprising a base frame having a lower portion fixedly installed apart from the ground, a rotary plate installed on the base frame so as to be rotatable, a stand assembly fixedly installed on the rotary plate and arranged at intervals in the outer circumferential direction to constitute a plurality of locking and fixing units capable of gripping and fixing a tire, and a table driving means installed on the base frame and driving the rotary plate on which the stand assembly is mounted to rotate by a set angle.

4. In claim 3, A high-pressure foaming system inside a tire, comprising a grip rotation driving means for connecting and fixing the locking unit and applying rotational force in the circumferential direction of the tire, in the above stand assembly.

5. In claim 3, The above locking unit is a tire internal high-pressure foaming system comprising a fixing clamp that protrudes forward so as to be in contact with the outer circumference of the tire, a hanger plate that has a plurality of clamp guides that allow the fixing clamps to be spaced apart along the circumference and that support the fixing clamps so as to be positionally variably mounted, a squeeze plate that is rotatably installed at the rear of the hanger plate and connects the fixing clamps while having a plurality of curved guide holes that guide the movement of the fixing clamps toward the tire, and a clamping driving means that extends and drives the squeeze plate so as to apply a rotational force to the squeeze plate.

6. In claim 5, The above-mentioned fixed clamp is a high-pressure foaming system inside a tire, comprising a grip member formed to protrude outwardly and capable of fixing a tire, a guide block that connects and supports the grip member on the hanger plate and is installed so as to be able to slide in a straight direction on a clamp guide of the hanger plate, and a cam flow that is installed so as to be able to move on a curved guide hole of the squeeze plate and has one end connected to the guide block.

7. In claim 5, A tire internal high-pressure foaming system comprising a guide roller installed on the hanger plate and configured to be in cloud contact with the outer periphery of the squeeze plate, the locking unit.

8. In claim 5, A tire internal high-pressure foaming system comprising a stopper part that contact-detects the set rotation radius of the squeeze plate by the clamping driving means in the above locking fixing unit.

9. In claim 1, The above-mentioned transfer gripper and the high-pressure foamer each include a multi-joint robot that is configured to be driven in multiple axes with a degree of freedom within a radius of motion by assembling and connecting multiple arms with a rotary joint. The above multi-joint robot is a tire internal high-pressure foaming system comprising a first multi-joint robot that is movably driven in a path toward the loading conveyor and the unloading conveyor based on the rotary table in the switching transfer gripper, and a second multi-joint robot that is movably driven in a path toward the inside of the tire fixed on the rotary table in the high-pressure foaming machine.

10. In claim 9, The above-mentioned transfer gripper is a tire internal high-pressure foaming system comprising a gripping means configured to be installed at the tip of the first multi-joint robot and configured to grip the inside of the tire.

11. In claim 1, The high-pressure foaming machine comprises a head block having a primer supply path and a mixing path formed on the inside and a foaming nozzle provided at the front to enable foaming of a mixed primer, raw material supply blocks installed on both sides of the head block and connected to enable two types of primers to be supplied from the outside, a pressurizing needle means installed on the head block corresponding to the raw material supply block and ejecting the primer supplied from the raw material supply block by applying pressure toward the mixing path, a pressurizing cylinder installed on the upper portion of the head block and applying pressure in a vertical direction so that the mixed primer ejected from the pressurizing needle means and mixed in the mixing path faces the supply path, and a foaming cylinder installed at the rear of the head block and driven to eject the mixed primer supplied through the pressurizing cylinder toward the foaming nozzle.

Images