Foam attaching device

Abstract

The utility model relates to a foam attaching device. The foam attaching device is used for attaching foam to the inner surface of the tire. The foam attaching device comprises: a tire holding part for holding a tire; the foam supply part is configured to supply foam blocks to the foam supply table; and the foam conveying part comprises a suction head, and the suction head can be actuated to pick up the foam block at the foam supply table, convey the foam block to the to-be-attached part of the inner surface of the tire and press the foam block towards the to-be-attached part. According to the foam attaching device disclosed by the utility model, the workload of operators can be reduced, the foam attaching efficiency is improved, and the foam can be reliably attached to the inner surface of the tire. Moreover, according to the foam attaching device disclosed by the utility model, the foam block can be correctly positioned on the inner surface of the tire, and full-automatic or semi-automatic attaching of the foam on the inner surface of the tire is realized.

Description

Technical Field

[0001] The utility model relates to a tool for automobile decoration, in particular to a foam attaching device used for attaching a foam strip to the inner surface of a tire, thereby reducing tire noise. Background Art

[0002] The contents of this section merely provide background information related to the present invention and may not constitute prior art.

[0003] To reduce tire noise during driving, sound-absorbing foam is adhered to the inner surface of the tire. Typically, four to eight or more strips of sound-absorbing foam are evenly adhered to the inner surface of the tire. These strips are typically manually adhered to the inner surface of the tire by an operator. During this manual application, the operator places the foam in the appropriate position on the inner surface of the tire and uses a roller to press and adhere the foam to the inner surface. This operation largely depends on the operator's experience and has certain limitations in both the effectiveness and efficiency of the application. On the one hand, it is difficult to correctly position the foam relative to the tire during operation, which can cause the foam to deviate from the tire's centerline and uneven gaps between adjacent foam strips along the tire's circumference. Furthermore, misalignment and uneven installation of the foam on the tire are detrimental to the dynamic balance of the tire during high-speed rotation. On the other hand, when the operator uses the roller to press the foam, it is not possible to ensure complete contact between the foam and the inner surface of the tire. Air bubbles may exist between the foam and the inner surface of the tire, making it impossible to establish a reliable adhesion. As a result, when the tire rotates at high speeds, the foam may fall off the inner surface of the tire and move inside the tire, which may pose a safety risk. Furthermore, this manual application of sound-absorbing foam is inefficient and places a heavy workload on the operator.

[0004] To this end, it is desirable to provide improved attachment of the foam to the inner surface of the tire, ensure accurate positioning and reliable attachment of the foam on the inner surface of the tire, and improve the efficiency of foam attachment. Utility Model Content

[0005] One purpose of the present invention is to reduce the operator's workload, improve foam attachment efficiency, and achieve reliable foam attachment to the tire's inner surface. Another purpose of the present invention is to improve the accurate positioning of the foam on the tire's inner surface. Yet another purpose of the present invention is to achieve automatic foam attachment to the tire's inner surface.

[0006] One aspect of the present invention is to provide a foam applying device for applying foam to the inner surface of a tire. The foam applying device includes a tire holding portion for holding the tire; a foam supply portion configured to supply a foam block to a foam supply table; and a foam conveying portion including a suction head that can be actuated to pick up the foam block from the foam supply table and convey it to a portion of the tire's inner surface to be applied, thereby pressing the foam block toward the portion to be applied.

[0007] The foam feeding part includes: a storage hopper storing a plurality of foam blocks stacked on top of each other; and a pushing block actuated to move relative to the storage hopper to push the foam block at the bottom layer in the storage hopper to the foam feeding table.

[0008] In one embodiment, the foam delivery unit further comprises: a horizontal slide rail; and a movable plate that can be actuated to move along the horizontal slide rail. The suction head is mounted to the movable plate to move along with the movable plate, and the suction head can be actuated to move vertically relative to the movable plate.

[0009] In one embodiment, the foam delivery portion includes an actuator mounted to the moving plate, and the suction head is mounted to an end of a driving rod of the actuator.

[0010] In one embodiment, the tire holding portion includes: a baffle provided with a through hole for the suction head to move through; a support table for supporting the tire; and a positioning roller mounted to the baffle for holding the tire on the support table.

[0011] In one embodiment, the baffle is provided with an adjusting groove extending in a radial direction of the through hole, and the end portion of the positioning roller is mounted into the adjusting groove and is movable along the adjusting groove.

[0012] In one embodiment, the tire holding portion further includes a tire rotating device that can be actuated to rotate the tire by a predetermined angle.

[0013] In one embodiment, the surfaces of the suction head and the foam feeding table that contact the foam block are curved, and the suction head can be actuated to press the foam block toward the foam feeding table so that the foam block has a curvature corresponding to the curvature of the tire portion to be attached.

[0014] In one embodiment, the foam block includes foam and a backed adhesive tape adhered to the bottom of the foam.

[0015] In one embodiment, the backing protrudes from one side of the adhesive tape.

[0016] In one embodiment, the foam attaching device further includes a backing removal portion, which includes: a vertical guide rail; a backing clamp, which is mounted to the vertical guide rail and can be actuated to move along the vertical guide rail to clamp and remove the backing on the foam block adsorbed on the suction head.

[0017] In one embodiment, the backing removal portion further includes: a first horizontal moving member, to which the vertical guide rail is mounted to move with the first horizontal moving member; a first horizontal guide rail, to which the first horizontal moving member is mounted and can be actuated to move along the first horizontal guide rail; and a second horizontal guide rail, which is arranged perpendicular to the first horizontal guide rail, and to which the first horizontal guide rail is mounted and can be actuated to move along the second horizontal guide rail.

[0018] In one embodiment, the foam applying device further includes a controller configured to control actuation of the tire holding portion, the foam feeding portion, and the foam conveying portion.

[0019] In one embodiment, the portion to be attached is the middle portion of the inner surface of the tire in the width direction, and the controller controls the foam conveying part so that the suction head can be actuated to move to a position aligned with the center line of the inner surface of the tire.

[0020] The foam applying device according to the present invention easily and conveniently supplies a foam block via a foam feeding portion, picks up and delivers the foam to the portion to be attached on the inner surface of the tire via a foam conveying portion, and presses the foam block onto the portion to be attached via a suction head. This improves foam applying efficiency, reduces the operator's workload, and enables reliable foam application to the inner surface of the tire. Advantageously, the foam applying device according to the present invention, through the further advantageous arrangement of the foam conveying portion and the tire holding portion, can also achieve accurate positioning of the foam block on the inner surface of the tire, and achieve fully automatic or semi-automatic application of the foam to the inner surface of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a description of the embodiments of the present invention by way of example only with reference to the accompanying drawings. In the accompanying drawings, the same features or components are represented by the same reference numerals, and the drawings are not necessarily drawn to scale, and in the accompanying drawings:

[0022] Figure 1 A perspective view of a foam attachment device according to a preferred embodiment of the present invention is shown;

[0023] Figure 2 Shown Figure 1 A three-dimensional view of the foam feeding portion of the foam attaching device shown in FIG;

[0024] Figure 3 Shown Figure 2 A side view of the foam feeding portion shown in FIG.

[0025] Figure 4 and Figure 5 The three-dimensional diagrams respectively show different states of the foam attaching device, showing the process of the foam conveying part picking up and conveying the foam block;

[0026] Figures 6 to 8 A perspective view showing different states of the foam attaching device, illustrating a process in which the backing removing portion removes the backing from the foam block;

[0027] Figure 9 A perspective view showing a foam applying device applying a foam block to the inner surface of a tire;

[0028] Figure 10 Shown along Figure 9 A cross-sectional view of the foam attachment device taken along line AA in FIG.

[0029] Figure 11 A perspective view showing the tire after the foam block is attached; and

[0030] Figure 12 Shown Figure 11 A cross-sectional view of the tire shown in FIG. DETAILED DESCRIPTION

[0031] The following description is merely illustrative in nature and is not intended to limit the present invention, its applications, and uses. It should be understood that throughout the drawings, like reference numerals indicate identical or similar parts and features. The drawings merely schematically illustrate the concepts and principles of the embodiments of the present invention and do not necessarily depict the specific dimensions and proportions of each embodiment of the present invention. Certain portions of certain drawings may be exaggerated to illustrate relevant details or structures of the embodiments of the present invention.

[0032] In the description of each embodiment of the present invention, the directional terms related to "up", "down", "left", "right", "front" and "back" are used to describe the orientation of up, down, left, right, front and back in the view.

[0033] Figure 1 FIG1 shows a perspective view of a foam attachment device 1 according to a preferred embodiment of the present invention. Figure 1 As shown, the foam applying device 1 includes a foam feeding part 20 , a foam conveying part 30 and a tire holding part 50 which are arranged on an operating table 10 .

[0034] The foam supply unit 20 is provided on the operation table 10 via a support frame 21 , and is configured to supply a foam block to be attached to the inner surface of the tire onto the foam supply table of the foam applying device 1 . Figure 2 Shows a perspective view of the foam feeding portion 20, Figure 3 FIG shows a side view of the foam feeding portion 20. Figure 2 As shown, the foam supply unit 20 includes a hopper 22 and a pusher block 24, which are mounted on a support frame 21. Multiple foam blocks F are stacked within the hopper 22. Each foam block F consists of foam and an adhesive tape with a backing B attached to the bottom of the foam. The backing B prevents the stacked foam blocks F from sticking to each other. The backing B is longer than the foam blocks F, protruding from one side of the foam and adhesive tape. When stacked within the hopper 22, each foam block F is positioned with its backing B facing downward.

[0035] The storage hopper 22 includes a first side plate 221 and a second side plate 222 that are opposed to each other. The spacing between the first side plate 221 and the second side plate 222 generally corresponds to the length of the foam block F. The length of the foam block F corresponds to the circumferential length of the portion to be attached on the inner surface of the tire, and the width of the foam block F corresponds to the width of the middle portion of the inner surface of the tire. The bottom of the storage hopper 22 is also provided with a first guide rail 211 and a second guide rail 222 that are spaced apart from each other. The foam block F in the storage hopper 22 rests on the first guide rail 211 and the second guide rail 222. Furthermore, the storage hopper 22 includes a first baffle 223 and a second baffle 224 that extend toward each other from the ends of the first side plate 221 and the second side plate 222, respectively, to confine the foam block F within the storage hopper 22's storage space. The bottom ends of the first baffle 223 and the second baffle 224 are spaced apart from the upper surfaces of the first guide rail 211 and the second guide rail 222. The spacing is slightly greater than the thickness of one foam block F but less than the sum of the thicknesses of two foam blocks F, so that only one foam block F can be pushed out from the gap between the first baffle 223 and the second baffle 224 and the first guide rail 211 and the second guide rail 222 at a time. The foam feeding portion 20 also includes a pressing block 23 with a handle. The pressing block 23 is placed on the topmost foam block F in the storage hopper 23, so that when the bottommost foam block F is pushed out of the storage hopper 23, the remaining foam blocks F in the storage hopper 23 automatically move downward under the pressure of the pressing block 23 and rest on the first guide rail 211 and the second guide rail 222, ready for the supply of the next foam block F.

[0036] A foam feeding platform 214 is provided on the other side of the support frame 21. The supporting surface of the foam feeding platform 214 is a curved surface, the curvature of which corresponds to the curvature of the inner surface of the tire to which the foam is to be attached. Figure 2 As shown, a retaining ring 213 is also provided on the support frame 21 around the foam feeding platform 214 to prevent the foam from being pushed beyond the foam feeding platform 214, so as to limit the pushed foam block cotton on the foam feeding platform 214, which helps to correctly position the foam block on the foam feeding platform 214.

[0037] The width of the push block 24 is substantially equal to or slightly smaller than the interval between the first guide rail 211 and the second guide rail 222, and the height of the push block 4 is greater than the heights of the first guide rail 211 and the second guide rail, but less than or equal to the sum of the heights of the first guide rail 211 and the second guide rail and the thickness of one foam block F. The push block 4 is configured to be movable between the first guide rail 211 and the second guide rail 212 in a direction toward the foam feeding table 214, so as to push the foam block F located at the bottom layer in the storage hopper 22 and resting on the first guide rail 211 and the second guide rail 212 out of the gap between the first baffle 223 and the second baffle 224 and the first guide rail 211 and the second guide rail 222 to the foam feeding table 214 located on the other side of the support frame 21, with the backing B on the bottom side of the foam block F facing the supporting surface of the foam feeding table 214, as shown in FIG. Figure 3 In order to clearly show that the push block 24 pushes the foam, Figure 3 The second guide rail 212 and the retaining ring 213 are not shown. Preferably, the push block 24 can be actuated by a drive device (not shown) to move between the first guide rail 211 and the second guide rail 212 toward or away from the foam feeding platform 214. Alternatively, the movement of the push block 24 can be achieved manually by an operator.

[0038] Return to see Figure 1 The foam conveying section 30 includes a suction head 36, a pair of horizontal slide rails 33, 34 and a movable plate 35. The horizontal slide rails 33, 34 are supported on the table top of the operating table 10 via brackets 31, 32 respectively. The movable plate 35 is configured to be actuated by a driving device (not shown in the figure) to move along the horizontal slide rails 33, 34 toward or away from the tire retaining portion 50. The driving device for driving the movable plate 35 to move along the horizontal slide rails 33, 34 can use any suitable driving device, for example, a motor and a threaded screw structure can be used. The suction head 36 is mounted to the movable plate 35 and moves horizontally with the movable plate 35. In addition, the suction head 36 can also be actuated by an actuator 37 to move vertically toward or away from the foam feeding table 214 relative to the movable plate 35. The suction head 36 is connected to the end of the drive rod of the actuator 37. In the example shown in the figure, the actuator 37 is a cylinder. However, the present invention is not limited thereto, and the actuator for the suction head 36 may also adopt other suitable driving mechanisms, such as a hydraulic cylinder or a motor. Figure 4 and Figure 5 FIG. 3 shows a process in which the foam conveying portion 30 picks up and conveys the foam block F. In order to facilitate the illustration of the suction head 36 and its movement, FIG. Figure 4 and Figure 5 The bracket 32 is not shown.

[0039] like Figure 4 and Figure 5 As shown, the end surface of the suction head 36 is curved, corresponding to the shape of the curved surface of the foam supply platform 214, specifically having a curvature similar to the inner surface of the tire to which the foam is to be applied. The suction head 36 is connected to a suction device (e.g., a vacuum pump, not shown) to generate a suction force. For example, the suction device can be integrated into the cylinder 37. Figure 4 and Figure 5 The figure shows the process of the foam conveying unit 30 picking up and conveying the foam block F. When the suction head 36 moves vertically to the foam feeding table 214 to pick up the foam block F on the foam feeding table 214, the driving mechanism (cylinder 37) of the suction head 36 generates a driving force to press the foam block F toward the foam feeding table 214. Figure 4 As shown, the foam block F is pressed into a shape corresponding to the support surface of the foam feeding table 214. After the foam block F is squeezed into a curved shape, the suction device is actuated to generate a suction force on the suction head 36, so that the suction head 36 adsorbs the foam block F on the suction head 36, and then the suction head 36 is actuated by the cylinder 37 to vertically leave the foam feeding table 214, as shown in FIG. Figure 5 shown.

[0040] Return to see Figure 1 Preferably, the foam attaching device 1 further includes a backing removal unit 40. The backing removal unit 40 is installed on the operating table 10 and is configured to remove the backing B on the foam block F to be attached and collect the removed backing B into a backing recovery device. Figures 6 to 8 The figure shows various parts of the backing removal unit 40 and a process in which the backing removal unit 40 removes the backing B from the foam block F. The backing removal unit 40 includes a backing clamp 41 and a vertical guide rail 42. The backing clamp 41 is mounted to the vertical guide rail 42 and can be actuated to move upward along the vertical guide rail 42 toward the foam block F to clamp the protruding end of the backing B on the foam block F sucked by the suction head 36, as shown in FIG. Figure 6 and after clamping the backing B, the backing clamp 41 can be actuated along the vertical guide rail 42 back toward the foam block F and move downward to remove the backing B from the foam block F, as Figure 7 As shown, the removed backing B is sent to the backing recovery device. In the example shown in the figure, the movement of the backing chuck 41 along the vertical guide rail 42 is actuated by the cylinder 46. However, the present invention is not limited to this. In other examples according to the present invention, the backing chuck 41 can also be actuated using other suitable driving mechanisms. In the example shown in the figure, the backing recovery device is a recovery bucket 11 set in the operating table 10, and accordingly, an opening 12 is provided on the table top of the operating table 10 for the backing chuck 41 to move so that the backing B passes through the opening 12 and is placed in the recovery bucket 11, as shown in FIG. Figure 7 and Figure 8 As shown. Figures 6 to 8 In order to show the recovery bin 11 located in the operating table 10, the side panels of the operating table 10 are not shown.

[0041] Preferably, in order to keep the backing removal unit 40 as far away as possible from other parts of the foam applying device 1 (e.g., the foam feeding unit 20 and the foam conveying unit 30) without any interference, the backing removal unit 40 may further include a first horizontal moving member 43, a first horizontal guide rail 44, and a second horizontal guide rail 45. The vertical guide rail 42 is mounted to the first horizontal moving member 43 to move with the first horizontal moving member 43. The first horizontal moving member 43 is mounted to the first horizontal guide rail 44 and can be actuated to move along the first horizontal guide rail 44. The first horizontal guide rail 44 is mounted to the second horizontal guide rail 45 and can be actuated to move along the second horizontal guide rail 45. The first horizontal guide rail 44 and the second horizontal guide rail 45 are arranged perpendicular to each other, and the first horizontal guide rail 44 and the foam feeding portion 30 are respectively disposed on either side of the opening 12 of the operating table 10. The first horizontal guide rail 44 can be disposed perpendicularly to the horizontal slide rails 33 and 34 of the foam conveying portion 30, so that when the first moving member 43 moves along the first horizontal guide rail 44, it can move away from the foam conveying portion 30 in a shorter distance to avoid obstructing the suction head 36 of the foam conveying portion 30 from conveying the foam block F. The first horizontal guide rail 44 can move along the second horizontal guide rail 45 to stagger with the foam feeding portion 20 to avoid obstructing the suction head 36 from picking up the foam block from the foam feeding table 214.

[0042] It should be noted that in the preferred embodiment shown in the figures, the foam applying device 1 is provided with the aforementioned backing removal portion 40 to automatically remove the backing B from the foam block F. However, the present invention is not limited thereto. In other embodiments according to the present invention, the backing B from the foam block B can also be removed manually.

[0043] Figure 9 The foam conveying portion 30 is shown conveying the foam block F from which the backing B is removed to the tire holding portion 50 to be attached to the inner surface of the tire T supported on the tire holding portion 50 .

[0044] The tire holding unit 50 includes a baffle 51, a support platform 52, and positioning rollers 53 and 54. The baffle 51 is provided with a through hole 511 for the suction head 36 of the foam conveying unit 30, the movable plate 35 on which the suction head 36 is mounted, and its guide rails. The support platform 52 is arranged near the baffle 51 to support the tire T to which the foam block is to be attached. The tire T is held on the support platform 52 so that the portion to be attached on the inner surface of the tire T is located at the bottom, so that the suction head 36, which has the foam block F1 sucked thereon, is aligned with the portion to be attached on the inner surface of the tire T, thereby aligning the foam block F with the portion to be attached. The portion to be attached is the middle portion of the inner surface T1 of the tire T in the width direction. In the example shown in the figure, the baffle 51 and the support platform 52 are formed integrally. However, the present invention is not limited to this. In other examples according to the present invention, the baffle 51 and the support platform 52 can be manufactured separately and assembled together. One end of the positioning rollers 53 and 54 is respectively mounted in adjustment slots 512 and 513 on the baffle 51 to hold the tire T on the support platform 52. The ends of the positioning rollers 53 and 54 are movable within the adjustment slots 512 and 513 to accommodate tires of different sizes. The adjustment slots 512 and 513 are arranged to extend radially along the through-hole 511. Therefore, when the ends of the positioning rollers 53 and 54 move within the adjustment slots 512 and 513, the positioning rollers 53 and 54 are adjusted relative to the baffle 51 along the radial direction of the through-hole 511, thereby accommodating tires of different sizes and maintaining the tire T aligned with the through-hole 511.

[0045] Figure 10 Shown along Figure 9 A cross-sectional view of the foam attachment device 1 taken along line AA in FIG. Figure 10 As shown, the movable plate with the suction head 36 mounted thereon is actuated to move to the tire holding portion 50, passing through the through-hole 511 of the baffle plate 51 so as to align the suction head 36 with the inner surface T1 of the tire T positioned on the support platform 52. Alignment of the suction head 36 with the inner surface T1 of the tire T can be achieved by controlling the movement of the movable plate 35. For example, in one embodiment, the foam applying device 1 can be provided with a sensor (not shown) to detect alignment of the widthwise centerline of the inner surface T1 of the tire T with the suction head 36 (e.g., detecting the distance between the suction head 36 and the widthwise centerline of the inner surface T1 of the tire T in the moving direction of the movable plate 35). The driving device of the movable plate 35 can control the movement of the movable plate 35 based on the detection result of the sensor, thereby controlling the suction head 36 to align with the widthwise centerline of the inner surface T1 of the tire T. Alternatively, the alignment of the suction head 36 with the inner surface T1 of the tire T can also be manually controlled by an operator.

[0046] After the suction head 36 is aligned with the inner surface T1 of the tire T, it is actuated to move toward the inner surface T1 of the tire T, pressing the foam block F, with the backing B removed, against the inner surface T1 of the tire T. As previously described, because the foam block F has been pressed to a curved profile corresponding to the inner surface T1 of the tire T before being attached to the inner surface T1 of the tire T, when the foam block F is pressed against the inner surface T1 of the tire T, the entire surface of the foam block F, to which the adhesive tape is attached, is fully aligned with the portion of the inner surface T1 of the tire T to be attached, ensuring a secure attachment and preventing the formation of air bubbles. Furthermore, after the suction head 36 maintains pressure on the foam block F and the inner surface T1 of the tire T for a predetermined period of time, the adhesive tape on the foam block F securely adheres the foam block F to the inner surface T1 of the tire T. Then, the suction head 36 stops applying pressure to the foam block F, and the suction device is turned off, and no suction force is generated on the suction head 36, thereby releasing the foam block F. Thus, the foam block F is attached to the inner surface T1 of the tire T.

[0047] After completing the attachment of the foam block F, the suction head 36 is actuated to move away from the inner surface T1 of the tire T and upward relative to the movable plate 35, and when the suction head 36 moves upward to above the bottom of the through hole 51 of the baffle 51, the movable plate 35 is actuated to move away from the tire retaining portion 50 along the horizontal slide rails 33 and 34, and the suction head 36 mounted to the movable plate 35 moves away from the tire retaining portion 50 with the movable plate 35 and returns to the initial position to prepare for the attachment of the next foam block.

[0048] The tire T on the support platform 52 is then rotated by a predetermined angle so that the next attachment portion on the inner surface T1 of the tire T is located at the bottom, ready for attachment of the foam block. Preferably, the tire holding portion 50 is further provided with a tire rotating device (not shown). The tire rotating device can be actuated to rotate the tire T on the support platform 52 by a predetermined angle.

[0049] The above process is repeated until all the foam blocks are attached to the inner surface T1 of the tire T.

[0050] Preferably, in the embodiment shown in the figures, the foam applying device 1 further includes a control unit 60, which is disposed within the operating console 10. The control unit 60 is configured to communicate with one or more of the foam feeding unit 20, the foam conveying unit 30, the backing removal unit 40, and the tire holding unit 50 to control the actuation of corresponding components within the foam feeding unit 20, the foam conveying unit 30, the backing removal unit 40, and / or the tire holding unit 50, thereby achieving fully or semi-automatic application of the foam block F to the inner surface T1 of the tire T. Specifically, the control unit 60 can be implemented as a hardware circuit board. The electronic components on the circuit board are electrically connected to the various drive devices and sensors within the foam feeding unit 20, the foam conveying unit 30, the backing removal unit 40, and / or the tire holding unit 50, receive electrical signals from the sensors, and control the actuation of the corresponding drive devices based on the received electrical signals. The control unit 60 can use existing control methods to control the corresponding drive devices based on predetermined logic and sensor signals. The improvement of the present invention does not lie in the improvement of the control method. One of the improvements of the present invention is that the foam feeding unit 20, foam conveying unit 30, backing removal unit 40, and / or tire holding unit 50 can be combined with the control unit 60 to form a fully automated foam attachment device, thereby achieving fully automated attachment, improving work efficiency and quality, and significantly reducing the workload of the operator. As previously mentioned, the provision of the control unit 60 is preferred but not required. The various moving components in the foam feeding unit 20, foam conveying unit 30, backing removal unit 40, and / or tire holding unit 50 can be partially actuated by the operator, thereby providing semi-automatic attachment of the foam block. Compared to the existing fully manual attachment solutions in the prior art, this still improves foam attachment efficiency and reduces the workload of the operator.

[0051] Figure 11 A three-dimensional view of a tire T is shown, on the inner surface T1 of the tire T all foam blocks have been attached using the foam attaching device 1 according to the present invention. Figure 12 Shown Figure 11 : is a cross-sectional view of a tire T shown in , taken along a center plane in its width direction.

[0052] like Figure 12 As shown, a plurality of foam blocks spaced apart from one another are evenly spaced apart and applied to the inner surface T1 of a tire T using the foam applying device 1 according to the present invention. In the example shown in the figure, nine foam blocks F1-F9 spaced apart from one another in the circumferential direction are applied to the inner surface T1 of the tire T. However, the present invention is not limited thereto. The foam applying device 1 according to the present invention can apply fewer or more foam blocks to the inner surface of the tire T as needed.

[0053] The above describes a preferred embodiment of a foam attachment device according to the present invention. The foam attachment device according to the present invention can achieve fully automatic or semi-automatic attachment of a foam block to the inner surface of a tire, can correctly position the foam block on the inner surface of the tire, and can ensure that the entire adhesive surface of the foam block adheres to the inner surface of the tire, thereby achieving reliable attachment.

[0054] While exemplary embodiments of the foam application device according to the present invention have been described in detail herein, it should be understood that the present invention is not limited to the specific embodiments described and illustrated above. Those skilled in the art will be able to implement various combinations, modifications, and variations of the present invention without departing from the spirit and scope of the present invention. All such combinations, modifications, and variations fall within the scope of the present invention. Furthermore, all components described herein may be replaced by other technically equivalent components.

Claims

1. A foam attaching device (1), which is used to attach foam to the inner surface of a tire, characterized in that: The foam attaching device (1) comprises: A tire holding portion (50) for holding a tire; a foam feeding portion (20) configured to feed a foam block (F) to a foam feeding station (214); and A foam conveying portion (30) includes a suction head (36) that can be actuated to pick up the foam block (F) at the foam feeding table (214) and convey it to a portion to be attached on the inner surface of the tire, and press the foam block (F) toward the portion to be attached.

2. The foam attaching device (1) according to claim 1, characterized in that: The foam feeding part (20) comprises: a storage hopper (22) storing a plurality of foam blocks (F) stacked on top of each other; and A pushing block (24) can be actuated to move relative to the storage hopper (22) to push the foam block located at the bottom layer in the storage hopper (22) to the foam supply table (214).

3. The foam attaching device (1) according to claim 1, characterized in that: The foam conveying part (30) further includes: horizontal slide rails (33, 34); and a moving plate (35) which can be actuated to move along the horizontal rails (33, 34), The suction head (36) is mounted to the moving plate (35) to move with the moving plate (35), and the suction head (36) can be actuated to move in a vertical direction relative to the moving plate (35).

4. The foam attaching device (1) according to claim 3, characterized in that: The foam delivery portion (30) includes an actuator, the actuator is mounted to the moving plate (35), and the suction head (36) is mounted to the end of a driving rod of the actuator.

5. The foam attaching device (1) according to claim 1, characterized in that: The tire holding portion (50) includes: a baffle (51), wherein the baffle (51) is provided with a through hole (511) for the suction head (36) to move through; a support platform (52) for supporting a tire; and Positioning rollers (53, 54) are mounted to the baffle (51) for holding the tire on the support platform (52).

6. The foam attaching device (1) according to claim 5, characterized in that: The baffle (51) is provided with adjustment grooves (512, 513) extending in the radial direction of the through hole (511), and the ends of the positioning rollers (53, 54) are installed in the adjustment grooves (512, 513) and can move along the adjustment grooves (512, 513).

7. The foam attaching device (1) according to claim 5, characterized in that: The tire holding portion (50) further includes a tire rotating device that can be actuated to rotate the tire by a predetermined angle.

8. The foam attaching device (1) according to claim 1, characterized in that: The surfaces of the suction head (36) and the foam feeding table (214) that are in contact with the foam block (F) are curved surfaces, and the suction head (36) can be actuated to press the foam block (F) toward the foam feeding table (214) so that the foam block (F) has a curvature corresponding to the curvature of the portion of the tire to be attached.

9. The foam attaching device (1) according to any one of claims 1 to 8, characterized in that: The foam block (F) comprises foam and an adhesive tape with a backing (B), the adhesive tape being adhered to the bottom of the foam.

10. The foam attaching device (1) according to claim 9, characterized in that: The backing (B) protrudes from one side of the adhesive tape.

11. The foam attaching device (1) according to claim 9, characterized in that: The foam attachment device (1) further comprises a backing removal portion (40), wherein the backing removal portion (40) comprises: vertical guide rails (42); A backing clamp (41) is mounted on the vertical guide rail (42) and can be actuated to move along the vertical guide rail (42) to clamp and remove the backing (B) on the foam block adsorbed on the suction head (36).

12. The foam attaching device (1) according to claim 11, characterized in that: The backing removal portion (40) further comprises: a first horizontal moving member (43), the vertical guide rail (42) being mounted to the first horizontal moving member (43) so as to move along with the first horizontal moving member (43); a first horizontal guide rail (44), the first horizontal moving member (43) being mounted to the first horizontal guide rail (44) and being actuated to move along the first horizontal guide rail (44); and A second horizontal guide rail (45) is arranged perpendicularly to the first horizontal guide rail (44), the first horizontal guide rail (44) being mounted to the second horizontal guide rail (45) and being actuated to move along the second horizontal guide rail (45).

13. The foam attaching device (1) according to any one of claims 1 to 8, characterized in that: The foam attaching device (1) further includes a controller (60) configured to control the actuation of the tire holding portion (50), the foam feeding portion (20), and the foam conveying portion (30).

14. The foam attaching device (1) according to claim 13, characterized in that: The portion to be attached is the middle portion of the inner surface of the tire in the width direction, and the controller controls the foam delivery portion (30) so that the suction head (36) can be actuated to move to a position aligned with the center line of the inner surface of the tire.

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